diff --git a/.eslintrc b/.eslintrc
deleted file mode 100644
index fd6d4a88..00000000
--- a/.eslintrc
+++ /dev/null
@@ -1,368 +0,0 @@
-{
-  "extends": [
-    "standard", "plugin:compat/recommended",
-    "plugin:qunit/recommended", "plugin:testcafe/recommended"
-  ],
-  "parserOptions": {
-    "sourceType": "module"
-  },
-  "plugins": ["compat", "qunit", "testcafe", "jsdoc", "markdown", "import", "node", "promise"],
-  "env": {
-    "node": false,
-    "browser": true
-  },
-  "settings": {
-    "polyfills": ["url", "promises", "fetch", "queryselector"],
-    "jsdoc": {
-      "additionalTagNames": {
-        "customTags": []
-      },
-      "tagNamePreference": {
-          "arg": "param",
-          "return": "returns"
-      },
-      "allowOverrideWithoutParam": true,
-      "allowImplementsWithoutParam": true,
-      "allowAugmentsExtendsWithoutParam": true
-    }
-  },
-  "overrides": [
-    {
-      "files": ["editor/locale/lang.*.js"],
-      "rules": {
-        "import/no-anonymous-default-export": ["off"]
-      }
-    },
-    {
-      "files": ["editor/extensions/ext-locale/**"],
-      "rules": {
-        "import/no-anonymous-default-export": ["off"]
-      }
-    },
-    {
-      "files": ["editor/extensions/**/ext-*.js"],
-      "rules": {
-        "consistent-this": ["error", "svgEditor"],
-        "import/no-anonymous-default-export": ["off"]
-      }
-    },
-    {
-      "files": [
-        "editor/svgpathseg.js", "editor/touch.js", "editor/typedefs.js",
-        "editor/redirect-on-no-module-support.js",
-        "test/all_tests.js", "screencasts/svgopen2010/script.js",
-        "opera-widget/handlers.js",
-        "firefox-extension/handlers.js",
-        "firefox-extension/content/svg-edit-overlay.js"
-      ],
-      "rules": {
-        "import/unambiguous": ["off"]
-      }
-    },
-    {
-      "files": ["**/*.md"],
-      "rules": {
-        "no-undef": ["off"],
-        "no-unused-vars": ["warn"],
-        "padded-blocks": ["off"],
-        "import/unambiguous": ["off"]
-      }
-    },
-    {
-      "files": ["test/**"],
-      "rules": {
-        "no-console": ["off"]
-      }
-    },
-    {
-      "files": [
-        "docs/jsdoc-config.js", "build-html.js", "jsdoc-check-overly-generic-types.js",
-        "rollup.config.js", "rollup-config.config.js"
-      ],
-      "rules": {
-        "node/no-extraneous-import": ["error"],
-        "node/no-extraneous-require": ["error"],
-        "node/no-missing-import": ["error"],
-        "node/no-missing-require": ["error"],
-        "node/no-unpublished-bin": ["error"],
-        "node/no-unpublished-import": ["error"],
-        "node/no-unpublished-require": ["error"],
-        "node/no-unsupported-features/es-builtins": ["error"],
-        "node/no-unsupported-features/es-syntax": ["error"],
-        "node/no-unsupported-features/node-builtins": ["error"],
-        "node/process-exit-as-throw": ["error"],
-        "node/shebang": ["error"],
-
-        "node/exports-style": ["error", "module.exports"],
-        "node/prefer-global/buffer": ["error", "always"],
-        "node/prefer-global/console": ["error", "always"],
-        "node/prefer-global/process": ["error", "always"],
-        "node/prefer-global/text-decoder": ["error", "always"],
-        "node/prefer-global/text-encoder": ["error", "always"],
-        "node/prefer-global/url-search-params": ["error", "always"],
-        "node/prefer-global/url": ["error", "always"]
-      }
-    },
-    {
-      "files": ["rollup.config.js", "rollup-config.config.js"],
-      "rules": {
-        "node/no-unsupported-features/es-syntax": "off",
-        "node/no-unpublished-import": "off"
-      }
-    },
-    {
-      "files": ["jsdoc-check-overly-generic-types.js", "build-html.js"],
-      "rules": {
-        "import/unambiguous": "off",
-        "import/no-commonjs": "off"
-      }
-    }
-  ],
-  "rules": {
-    "array-bracket-newline": ["error", "consistent"],
-    "array-bracket-spacing": ["error"],
-    "array-callback-return": ["error"],
-    "array-element-newline": ["off"],
-    "arrow-body-style": ["off"],
-    "arrow-parens": ["error"],
-    "block-scoped-var": ["error"],
-    "callback-return": ["error"],
-    "class-methods-use-this": ["warn"],
-    "computed-property-spacing": ["error"],
-    "consistent-return": ["error"],
-    "consistent-this": ["warn"],
-    "dot-notation": ["error"],
-    "for-direction": ["error"],
-    "func-name-matching": ["error"],
-    "func-names": ["off"],
-    "func-style": ["off"],
-    "function-paren-newline": ["error", "consistent"],
-    "getter-return": ["error"],
-    "global-require": ["error"],
-    "guard-for-in": ["error"],
-    "id-blacklist": ["off"],
-    "id-length": ["off"],
-    "id-match": ["off"],
-    "implicit-arrow-linebreak": ["error"],
-    "init-declarations": ["off"],
-    "jsx-quotes": ["error"],
-    "line-comment-position": ["off"],
-    "linebreak-style": ["error"],
-    "lines-around-comment": ["off"],
-    "lines-between-class-members": ["off"],
-    "max-classes-per-file": ["off"],
-    "max-depth": ["off"],
-    "max-lines-per-function": ["off"],
-    "max-lines": ["off"],
-    "max-nested-callbacks": ["error"],
-    "max-params": ["off"],
-    "max-statements-per-line": ["off"],
-    "max-statements": ["off"],
-    "multiline-comment-style": ["off"],
-    "multiline-ternary": ["error", "always-multiline"],
-    "newline-after-var": ["off"],
-    "newline-before-return": ["off"],
-    "newline-per-chained-call": ["off"],
-    "no-alert": ["warn"],
-    "no-async-promise-executor": ["error"],
-    "no-await-in-loop": ["error"],
-    "no-bitwise": ["error"],
-    "no-buffer-constructor": ["error"],
-    "no-case-declarations": ["error"],
-    "no-confusing-arrow": ["error"],
-    "no-console": ["warn"],
-    "no-continue": ["off"],
-    "no-div-regex": ["error"],
-    "no-duplicate-imports": ["error"],
-    "no-else-return": ["error"],
-    "no-empty-function": ["warn"],
-    "no-empty": ["error", {"allowEmptyCatch": true}],
-    "no-eq-null": ["error"],
-    "no-extra-label": ["error"],
-    "no-extra-semi": ["error"],
-    "no-implicit-coercion": ["error"],
-    "no-implicit-globals": ["error"],
-    "no-inline-comments": ["off"],
-    "no-invalid-this": ["off"],
-    "no-lonely-if": ["error"],
-    "no-loop-func": ["error"],
-    "no-misleading-character-class": ["error"],
-    "no-mixed-requires": ["error", {"grouping": true, "allowCall": true}],
-    "no-multi-assign": ["off"],
-    "no-negated-condition": ["off"],
-    "no-nested-ternary": ["off"],
-    "no-param-reassign": ["off"],
-    "no-plusplus": ["off"],
-    "no-process-env": ["error"],
-    "no-process-exit": ["error"],
-    "no-prototype-builtins": ["error"],
-    "no-restricted-globals": ["error", {
-        "name": "event",
-        "message": "Use local event parameter instead (preferably as \"e\" or \"ev\")."
-    }, {
-        "name": "fdescribe",
-        "message": "Do not commit fdescribe. Use describe instead."
-    }],
-    "no-restricted-imports": ["off"],
-    "no-restricted-modules": ["off"],
-    "no-restricted-properties": ["error", {
-        "property": "__defineGetter__",
-        "message": "Please use `Object.defineProperty` instead."
-    }],
-    "no-restricted-syntax": ["off"],
-    "no-script-url": ["error"],
-    "no-shadow": ["error", {"builtinGlobals": true, "hoist": "functions", "allow": ["parent", "top", "open", "name", "closed", "start"]}],
-    "no-spaced-func": ["error"],
-    "no-sync": ["error"],
-    "no-ternary": ["off"],
-    "no-undefined": ["off"],
-    "no-underscore-dangle": ["off"],
-    "no-unused-labels": ["error"],
-    "no-useless-concat": ["off"],
-    "no-var": ["error"],
-    "no-void": ["error"],
-    "nonblock-statement-body-position": ["error"],
-    "object-curly-newline": ["off"],
-    "object-shorthand": ["error", "always", {"avoidExplicitReturnArrows": true}],
-    "one-var-declaration-per-line": ["off"],
-    "operator-assignment": ["error"],
-    "padding-line-between-statements": ["off"],
-    "prefer-arrow-callback": ["off"],
-    "prefer-const": ["error"],
-    "prefer-destructuring": ["error", {"object": true}],
-    "prefer-numeric-literals": ["warn"],
-    "prefer-object-spread": ["error"],
-    "prefer-rest-params": ["error"],
-    "prefer-spread": ["error"],
-    "prefer-template": ["off"],
-    "quote-props": ["error", "as-needed"],
-    "radix": ["error", "as-needed"],
-    "require-atomic-updates": ["error"],
-    "require-await": ["error"],
-    "require-jsdoc": ["warn"],
-    "require-yield": ["error"],
-    "semi-style": ["error"],
-    "sort-imports": ["off"],
-    "sort-keys": ["off"],
-    "sort-vars": ["off"],
-    "strict": ["error"],
-    "switch-colon-spacing": ["error"],
-    "vars-on-top": ["warn"],
-    "wrap-regex": ["error"],
-
-    "semi": ["error", "always"],
-    "indent": ["error", 2, {"outerIIFEBody": 0}],
-    "object-property-newline": ["off"],
-    "one-var": ["off"],
-    "object-curly-spacing": ["error", "never"],
-
-    "promise/catch-or-return": "error",
-    "promise/no-return-wrap": "error",
-    "promise/param-names": "error",
-    "promise/always-return": "error",
-    "promise/no-native": "off",
-    "promise/no-nesting": "warn",
-    "promise/no-promise-in-callback": "warn",
-    "promise/no-callback-in-promise": "warn",
-    "promise/avoid-new": "warn",
-    "promise/no-new-statics": "error",
-    "promise/no-return-in-finally": "warn",
-    "promise/valid-params": "warn",
-    "promise/prefer-await-to-then": "error",
-    "promise/prefer-await-to-callbacks": "warn",
-
-    "import/no-unresolved": "error",
-    "import/named": "error",
-    "import/default": "error",
-    "import/namespace": "error",
-    "import/no-restricted-paths": "off",
-    "import/no-absolute-path": "error",
-    "import/no-dynamic-require": "error",
-    "import/no-internal-modules": "off",
-    "import/no-webpack-loader-syntax": "error",
-    "import/no-self-import": "error",
-    "import/no-cycle": "off",
-    "import/no-useless-path-segments": "error",
-    "import/no-relative-parent-imports": "off",
-    "import/export": "error",
-    "import/no-named-as-default": "error",
-    "import/no-named-as-default-member": "error",
-    "import/no-deprecated": "error",
-    "import/no-extraneous-dependencies": "error",
-    "import/no-mutable-exports": "error",
-    "import/unambiguous": "warn",
-    "import/no-commonjs": "error",
-    "import/no-amd": "error",
-    "import/no-nodejs-modules": "off",
-    "import/first": "error",
-    "import/exports-last": "off",
-    "import/no-duplicates": "error",
-    "import/no-namespace": "off",
-    "import/extensions": ["error", "always", {"ignorePackages": true}],
-    "import/order": ["error", {"groups": [
-      "builtin",
-      "external",
-      "internal",
-      ["parent", "sibling", "index"]
-    ]}],
-    "import/newline-after-import": "error",
-    "import/prefer-default-export": "off",
-    "import/max-dependencies": "off",
-    "import/no-unassigned-import": "off",
-    "import/no-named-default": "error",
-    "import/no-default-export": "off",
-    "import/no-named-export": "off",
-    "import/no-anonymous-default-export": "error",
-    "import/group-exports": "off",
-    "import/dynamic-import-chunkname": "off",
-
-    "jsdoc/check-param-names": 1,
-    "jsdoc/check-tag-names": 1,
-    "jsdoc/check-types": 1,
-    "jsdoc/newline-after-description": 0,
-    "jsdoc/require-description": 0,
-    "jsdoc/require-description-complete-sentence": 0,
-    "jsdoc/require-example": 0,
-    "jsdoc/require-hyphen-before-param-description": 0,
-    "jsdoc/require-param-description": 0,
-    "jsdoc/require-param": 1,
-    "jsdoc/require-param-name": 1,
-    "jsdoc/require-param-type": 1,
-    "jsdoc/require-returns-description": 0,
-    "jsdoc/require-returns-type": 1,
-
-    "jsdoc/no-undefined-types": ["off"],
-    "jsdoc/valid-types": ["error"],
-    "valid-jsdoc": ["error", {
-        "prefer": {
-            "arg": "param",
-            "argument": "param",
-            "return": "returns",
-            "virtual": "abstract"
-        },
-        "preferType": {
-            "Boolean": "boolean",
-            "Number": "number",
-            "String": "string",
-            "object": "Object",
-            "array": "Array"
-        },
-        "requireReturn": true,
-        "requireReturnType": true,
-        "requireParamType": true,
-        "matchDescription": "^([A-Z][\\s\\S]*[.`?!])?$",
-        "requireParamDescription": false,
-        "requireReturnDescription": false
-    }],
-    "no-warning-comments": ["off"],
-    "default-case": ["off"],
-    "complexity": ["off"],
-    "require-unicode-regexp": ["off"],
-    "capitalized-comments": ["off"],
-    "no-magic-numbers": ["off"],
-    "max-len": ["off", {
-      "ignoreUrls": true,
-      "ignoreRegExpLiterals": true
-    }]
-  }
-}
diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 00000000..e5e73a9e
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,154 @@
+module.exports = {
+  "extends": [
+    "ash-nazg/sauron-node",
+    "plugin:qunit/recommended", "plugin:testcafe/recommended"
+  ],
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  // Need to make explicit here for processing by jsdoc/check-examples
+  "plugins": ["qunit"],
+  "env": {
+    "browser": true
+  },
+  "settings": {
+    "polyfills": ["url", "promises", "fetch", "queryselector"],
+    "jsdoc": {
+      "additionalTagNames": {
+        // In case we need to extend
+        "customTags": []
+      },
+      "tagNamePreference": {
+        "arg": "param",
+        "return": "returns"
+      },
+      "allowOverrideWithoutParam": true,
+      "allowImplementsWithoutParam": true,
+      "allowAugmentsExtendsWithoutParam": true,
+      // For `jsdoc/check-examples` in `ash-nazg`
+      "matchingFileName": "dummy.md",
+      "rejectExampleCodeRegex": "^`",
+    }
+  },
+  "overrides": [
+    // These would otherwise currently break because of these issues:
+    //  1. `event:` https://github.com/eslint/doctrine/issues/221 and https://github.com/Kuniwak/jsdoctypeparser/pull/49 with https://github.com/Kuniwak/jsdoctypeparser/issues/47
+    //  1. `@implements`/`@augments`/`@extends`/`@override`: https://github.com/eslint/doctrine/issues/222
+    {
+      "files": [
+        "test/utilities_test.js", "editor/svg-editor.js", "editor/svgcanvas.js",
+        "editor/coords.js",
+        "editor/extensions/ext-eyedropper.js", "editor/extensions/ext-webappfind.js"
+      ],
+      "rules": {
+        "jsdoc/valid-types": "off",
+        "valid-jsdoc": "off"
+      }
+    },
+    // Locales have no need for importing outside of SVG-Edit
+    {
+      "files": [
+        "editor/locale/lang.*.js", "editor/extensions/ext-locale/**",
+        "docs/tutorials/ExtensionDocs.md"
+      ],
+      "rules": {
+        "import/no-anonymous-default-export": ["off"]
+      }
+    },
+    // For extensions, `this` is generally assigned to be the more
+    //   descriptive `svgEditor`; they also have no need for importing outside
+    //   of SVG-Edit
+    {
+      "files": ["editor/extensions/**/ext-*.js"],
+      "rules": {
+        "consistent-this": ["error", "svgEditor"],
+        "import/no-anonymous-default-export": ["off"]
+      }
+    },
+    // These browser files don't do importing or requiring
+    {
+      "files": [
+        "editor/svgpathseg.js", "editor/touch.js", "editor/typedefs.js",
+        "editor/redirect-on-no-module-support.js",
+        "editor/extensions/imagelib/index.js",
+        "editor/external/dom-polyfill/dom-polyfill.js",
+        "test/all_tests.js", "screencasts/svgopen2010/script.js",
+        "opera-widget/handlers.js",
+        "firefox-extension/handlers.js",
+        "firefox-extension/content/svg-edit-overlay.js"
+      ],
+      "rules": {
+        "import/unambiguous": ["off"]
+      }
+    },
+    // Our Markdown rules (and used for JSDoc examples as well, by way of
+    //   our use of `matchingFileName` in conjunction with
+    //   `jsdoc/check-examples` within `ash-nazg`)
+    {
+      "files": ["**/*.md"],
+      "rules": {
+        "eol-last": ["off"],
+        "no-console": ["off"],
+        "no-undef": ["off"],
+        "no-unused-vars": ["warn"],
+        "padded-blocks": ["off"],
+        "import/unambiguous": ["off"],
+        "import/no-unresolved": ["off"],
+        "node/no-missing-import": ["off"]
+      }
+    },
+    // Dis-apply Node rules mistakenly giving errors with browser files
+    {
+      "files": ["editor/**", "test/**"],
+      "rules": {
+        "node/no-unsupported-features/node-builtins": ["off"]
+      }
+    },
+    // We want console in tests!
+    {
+      "files": ["test/**"],
+      "rules": {
+        "no-console": ["off"]
+      }
+    },
+    {
+      // Node files
+      "files": [
+        "docs/jsdoc-config.js",
+        "build-html.js", "jsdoc-check-overly-generic-types.js",
+        "rollup.config.js", "rollup-config.config.js"
+      ],
+      "env": {
+        "node": true,
+      },
+      "rules": {
+        "node/no-unpublished-import": ["off"],
+        "node/no-unsupported-features/es-syntax": ["off"]
+      }
+    },
+    {
+      // As consumed by jsdoc, cannot be expressed as ESM
+      "files": ["docs/jsdoc-config.js"],
+      "parserOptions": {
+        "sourceType": "script"
+      },
+      "rules": {
+        "import/no-commonjs": "off"
+      }
+    }
+  ],
+  "rules": {
+    // Override these `ash-nazg/sauron` rules which are difficult for us
+    //   to apply at this time
+    "capitalized-comments": ["off"],
+    "complexity": ["off"],
+    "default-case": ["off"],
+    "require-unicode-regexp": ["off"],
+    "no-magic-numbers": ["off"],
+    "no-warning-comments": ["off"],
+    "max-len": ["off", {
+      "ignoreUrls": true,
+      "ignoreRegExpLiterals": true
+    }]
+  }
+};
diff --git a/CHANGES.md b/CHANGES.md
index 29bc81f8..ef4100e2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,62 @@
 # SVG-Edit CHANGES
 
+# 4.0.0
+
+- Breaking change (storage preference cookies): Namespace the cookie as
+  "svgeditstore" instead of just "store"
+- Breaking change: `loadSvgString` now returns a `Promise` rather than
+  accepting a callback.
+- Breaking change: Treat callbacks to `editor.ready` as Promises, only
+  resolving after all resolve. May require no changes unless for timing.
+- Breaking change: Make `editor.runCallbacks` return a `Promise` which
+  resolves upon all callbacks resolving.
+- Breaking change: Require `npx` (used with `babel-node`) to allow Node files
+  for HTML building and JSDoc type checking to be expressed as ESM.
+- Breaking change: `addExtension` now throws upon a repeated attempt to
+  add an already-added extension
+- Breaking change (API): Remove `svgCanvas.rasterExport` fourth (callback)
+  argument, collapsing fifth (options) to fourth
+- Breaking change (API): Remove `svgCanvas.exportPDF` third (callback)
+  argument
+- Breaking change (API): `editor/contextmenu.js` `add` now throws instead
+  of giving a console error only upon detecting a bad menuitem or
+  preexisting context menu
+- Breaking change (API): Remove `svgCanvas.embedImage` second (callback)
+  argument
+- Breaking change (API): Make `getHelpXML` a class instead of instance method
+  of `RGBColor`
+- Breaking change (internal API): Refactor `dbox` (and
+  `alert`/`confirm`/`process`/`prompt`/`select`) to avoid a callback argument
+  in favor of returning a Promise
+- Breaking internal API change: `updateGripCursor` moved to be class method
+  of Selector rather than instance method
+- Breaking internal API change: `subpathIsClosed` moved to be class method
+  of `Path` rather than instance method
+- Fix: Avoid running in extension `langReady` multiple times or serially
+- Enhancement (API): Add `svgCanvas.runExtension` to run just one extension and
+  add `nameFilter` callback to `runExtensions`
+- Enhancement (API): Supply `$` (our wrapped jQuery) to extensions so can use
+  its plugins, e.g., dbox with its `alert`
+- Enhancement: Use alert dialog in place of `alert` in webappfind
+- Enhancement: `editor.ready` now returns a Promise resolving when all
+  callbacks have resolved
+- Enhancement: Allow `noAlert` option as part of second argument to
+  `loadSvgString` (and `loadFromURL` and `loadFromDataURI`) to avoid UI
+  alert (and trigger promise rejection)
+- Enhancement: Make `dbox` as a separate module for alert, prompt, etc. dialogs
+- Optimization: Recompress images (imageoptim-cli updated)
+- Refactoring: Internal `PaintBox` as class; other misc. tweaks; no bitwise
+  in canvg
+- Refactoring: Reuse utilities base64 encoder for SVG icons plugin
+- Linting (ESLint): Further linting changes (for editor); rename
+  `.eslintrc` -> `.eslintrc.js` per recommendation and to more transparently
+  allow comments; apply new strict `eslint-config-ash-nazg` rules.
+- Linting (ESLint): Stricter rules (or switch to warning)
+- Docs (JSDoc): Fix return of the `mouseUp` (can also be an object) and
+  `mouseDown` (may also be a boolean) of `pathActions`; other JSDoc
+  additions/improvements
+- npm: Update devDeps
+
 ## 3.2.0
 
 - Refactoring: Avoid unnecessary `addEventListener` `false`; change internal
@@ -21,7 +78,9 @@
     <https://github.com/eslint/eslint-plugin-markdown/issues/109>,
     <https://github.com/gajus/eslint-plugin-jsdoc/issues/101>,
     <https://github.com/gajus/eslint-plugin-jsdoc/issues/99>,
-    <https://github.com/eslint/eslint/issues/11043>
+    <https://github.com/eslint/eslint/issues/11043>; NOTE:
+    if we need to tap into Markdown within JSDoc, see <https://github.com/jsdoc3/jsdoc#b21427343c7294bbf1f14c718a390f3e955e37cb>
+    for commit not present in npm.
 - Docs (README): Indicate minimal polyfills needed for older browsers
     (IE <= 11, IE Mobile, Opera Mini, Blackberry Browser <= 10,
     Android Browser 4.4.3-4.4.4)
diff --git a/README.md b/README.md
index d41f9e91..065d5868 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,7 @@ incorporating SVGEdit.
 
 ## Recent news
 
+- 2018-11-16 Published 4.0.0 (Move to Promise-based APIs)
 - 2018-11-01 Published 3.2.0 (Update qunit to resolve security vulnerability of a dependency)
 - 2018-10-25 Published 3.1.1 (Fix for saving SVG on Firefox)
 - 2018-10-24 Published 3.1.0 (Redirect on modular page for non-module-support;
diff --git a/build-html.js b/build-html.js
index 5b899756..6898f823 100644
--- a/build-html.js
+++ b/build-html.js
@@ -1,5 +1,5 @@
 /* eslint-env node */
-const fs = require('promise-fs');
+import fs from 'promise-fs';
 
 const filesAndReplacements = [
   {
@@ -122,26 +122,27 @@ const filesAndReplacements = [
   }
 ];
 
-filesAndReplacements.reduce(async (p, {input, output, replacements}) => {
+(async () => {
+await filesAndReplacements.reduce(async (p, {input, output, replacements}) => {
   await p;
   let data;
   try {
     data = await fs.readFile(input, 'utf8');
   } catch (err) {
-    console.log(`Error reading ${input} file`, err);
+    console.log(`Error reading ${input} file`, err); // eslint-disable-line no-console
   }
 
-  data = replacements.reduce((s, [find, replacement]) => {
-    return s.replace(find, replacement);
+  data = replacements.reduce((s, [fnd, replacement]) => {
+    return s.replace(fnd, replacement);
   }, data);
 
   try {
     await fs.writeFile(output, data);
   } catch (err) {
-    console.log(`Error writing file: ${err}`, err);
+    console.log(`Error writing file: ${err}`, err); // eslint-disable-line no-console
     return;
   }
-  console.log(`Completed file ${input} rewriting!`);
-}, Promise.resolve()).then(() => {
-  console.log('Finished!');
-});
+  console.log(`Completed file ${input} rewriting!`); // eslint-disable-line no-console
+}, Promise.resolve());
+console.log('Finished!'); // eslint-disable-line no-console
+})();
diff --git a/dist/canvg.js b/dist/canvg.js
index 5c8cf931..4689ed54 100644
--- a/dist/canvg.js
+++ b/dist/canvg.js
@@ -380,20 +380,38 @@ var canvg = (function (exports) {
   var colorDefs = [{
     re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
     example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 10), parseInt(bits[2], 10), parseInt(bits[3], 10)];
+    process: function process(_) {
+      for (var _len = arguments.length, bits = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        bits[_key - 1] = arguments[_key];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b);
+      });
     }
   }, {
     re: /^(\w{2})(\w{2})(\w{2})$/,
     example: ['#00ff00', '336699'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 16), parseInt(bits[2], 16), parseInt(bits[3], 16)];
+    process: function process(_) {
+      for (var _len2 = arguments.length, bits = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        bits[_key2 - 1] = arguments[_key2];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b, 16);
+      });
     }
   }, {
     re: /^(\w{1})(\w{1})(\w{1})$/,
     example: ['#fb0', 'f0f'],
-    process: function process(bits) {
-      return [parseInt(bits[1] + bits[1], 16), parseInt(bits[2] + bits[2], 16), parseInt(bits[3] + bits[3], 16)];
+    process: function process(_) {
+      for (var _len3 = arguments.length, bits = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
+        bits[_key3 - 1] = arguments[_key3];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b + b, 16);
+      });
     }
   }];
   /**
@@ -407,6 +425,8 @@ var canvg = (function (exports) {
     * @param {string} colorString
     */
     function RGBColor(colorString) {
+      var _this = this;
+
       _classCallCheck(this, RGBColor);
 
       this.ok = false; // strip any leading #
@@ -426,9 +446,9 @@ var canvg = (function (exports) {
       // search through the definitions to find a match
 
 
-      for (var i = 0; i < colorDefs.length; i++) {
-        var re = colorDefs[i].re;
-        var processor = colorDefs[i].process;
+      colorDefs.forEach(function (_ref) {
+        var re = _ref.re,
+            processor = _ref.process;
         var bits = re.exec(colorString);
 
         if (bits) {
@@ -438,15 +458,14 @@ var canvg = (function (exports) {
               g = _processor2[1],
               b = _processor2[2];
 
-          Object.assign(this, {
+          Object.assign(_this, {
             r: r,
             g: g,
             b: b
           });
-          this.ok = true;
+          _this.ok = true;
         }
-      } // validate/cleanup values
-
+      }, this); // validate/cleanup values
 
       this.r = this.r < 0 || isNaN(this.r) ? 0 : this.r > 255 ? 255 : this.r;
       this.g = this.g < 0 || isNaN(this.g) ? 0 : this.g > 255 ? 255 : this.g;
@@ -488,88 +507,74 @@ var canvg = (function (exports) {
 
         return '#' + r + g + b;
       }
-      /**
-      * Offers a bulleted list of help.
-      * @returns {HTMLUListElement}
-      */
-
-    }, {
-      key: "getHelpXML",
-      value: function getHelpXML() {
-        var examples = []; // add regexps
-
-        for (var i = 0; i < colorDefs.length; i++) {
-          var example = colorDefs[i].example;
-
-          for (var j = 0; j < example.length; j++) {
-            examples[examples.length] = example[j];
-          }
-        } // add type-in colors
-
-
-        examples.push.apply(examples, _toConsumableArray(Object.keys(simpleColors)));
-        var xml = document.createElement('ul');
-        xml.setAttribute('id', 'rgbcolor-examples');
-
-        for (var _i = 0; _i < examples.length; _i++) {
-          try {
-            var listItem = document.createElement('li');
-            var listColor = new RGBColor(examples[_i]);
-            var exampleDiv = document.createElement('div');
-            exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
-            exampleDiv.append('test');
-            var listItemValue = " ".concat(examples[_i], " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
-            listItem.append(exampleDiv, listItemValue);
-            xml.append(listItem);
-          } catch (e) {}
-        }
-
-        return xml;
-      }
     }]);
 
     return RGBColor;
   }();
 
+  RGBColor.getHelpXML = function () {
+    var examples = _toConsumableArray(colorDefs.flatMap(function (_ref2) {
+      var example = _ref2.example;
+      return example;
+    })).concat(_toConsumableArray(Object.keys(simpleColors)));
+
+    var xml = document.createElement('ul');
+    xml.setAttribute('id', 'rgbcolor-examples');
+    xml.append.apply(xml, _toConsumableArray(examples.map(function (example) {
+      try {
+        var listItem = document.createElement('li');
+        var listColor = new RGBColor(example);
+        var exampleDiv = document.createElement('div');
+        exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
+        exampleDiv.append('test');
+        var listItemValue = " ".concat(example, " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
+        listItem.append(exampleDiv, listItemValue);
+        return listItem;
+      } catch (e) {
+        return '';
+      }
+    })));
+    return xml;
+  };
+
   /**
   * StackBlur - a fast almost Gaussian Blur For Canvas
-
-  In case you find this class useful - especially in commercial projects -
-  I am not totally unhappy for a small donation to my PayPal account
-  mario@quasimondo.de
-
-  Or support me on flattr:
-  https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript
-
+  *
+  * In case you find this class useful - especially in commercial projects -
+  * I am not totally unhappy for a small donation to my PayPal account
+  * mario@quasimondo.de
+  *
+  * Or support me on flattr:
+  * {@link https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript}
   * @module StackBlur
   * @version 0.5
   * @author Mario Klingemann
-  Contact: mario@quasimondo.com
-  Website: http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
-  Twitter: @quasimondo
-
+  * Contact: mario@quasimondo.com
+  * Website: {@link http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html}
+  * Twitter: @quasimondo
+  *
   * @copyright (c) 2010 Mario Klingemann
-
-  Permission is hereby granted, free of charge, to any person
-  obtaining a copy of this software and associated documentation
-  files (the "Software"), to deal in the Software without
-  restriction, including without limitation the rights to use,
-  copy, modify, merge, publish, distribute, sublicense, and/or sell
-  copies of the Software, and to permit persons to whom the
-  Software is furnished to do so, subject to the following
-  conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-  OTHER DEALINGS IN THE SOFTWARE.
+  *
+  * Permission is hereby granted, free of charge, to any person
+  * obtaining a copy of this software and associated documentation
+  * files (the "Software"), to deal in the Software without
+  * restriction, including without limitation the rights to use,
+  * copy, modify, merge, publish, distribute, sublicense, and/or sell
+  * copies of the Software, and to permit persons to whom the
+  * Software is furnished to do so, subject to the following
+  * conditions:
+  *
+  * The above copyright notice and this permission notice shall be
+  * included in all copies or substantial portions of the Software.
+  *
+  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+  * OTHER DEALINGS IN THE SOFTWARE.
   */
   var mulTable = [512, 512, 456, 512, 328, 456, 335, 512, 405, 328, 271, 456, 388, 335, 292, 512, 454, 405, 364, 328, 298, 271, 496, 456, 420, 388, 360, 335, 312, 292, 273, 512, 482, 454, 428, 405, 383, 364, 345, 328, 312, 298, 284, 271, 259, 496, 475, 456, 437, 420, 404, 388, 374, 360, 347, 335, 323, 312, 302, 292, 282, 273, 265, 512, 497, 482, 468, 454, 441, 428, 417, 405, 394, 383, 373, 364, 354, 345, 337, 328, 320, 312, 305, 298, 291, 284, 278, 271, 265, 259, 507, 496, 485, 475, 465, 456, 446, 437, 428, 420, 412, 404, 396, 388, 381, 374, 367, 360, 354, 347, 341, 335, 329, 323, 318, 312, 307, 302, 297, 292, 287, 282, 278, 273, 269, 265, 261, 512, 505, 497, 489, 482, 475, 468, 461, 454, 447, 441, 435, 428, 422, 417, 411, 405, 399, 394, 389, 383, 378, 373, 368, 364, 359, 354, 350, 345, 341, 337, 332, 328, 324, 320, 316, 312, 309, 305, 301, 298, 294, 291, 287, 284, 281, 278, 274, 271, 268, 265, 262, 259, 257, 507, 501, 496, 491, 485, 480, 475, 470, 465, 460, 456, 451, 446, 442, 437, 433, 428, 424, 420, 416, 412, 408, 404, 400, 396, 392, 388, 385, 381, 377, 374, 370, 367, 363, 360, 357, 354, 350, 347, 344, 341, 338, 335, 332, 329, 326, 323, 320, 318, 315, 312, 310, 307, 304, 302, 299, 297, 294, 292, 289, 287, 285, 282, 280, 278, 275, 273, 271, 269, 267, 265, 263, 261, 259];
   var shgTable = [9, 11, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24];
@@ -843,31 +848,20 @@ var canvg = (function (exports) {
     this.next = null;
   };
 
-  var canvasRGBA_ = processCanvasRGBA;
   /**
-  * @callback module:canvg.StackBlurCanvasRGBA
-  * @param {string} id
-  * @param {Float} x
-  * @param {Float} y
-  * @param {Float} width
-  * @param {Float} height
-  * @param {Float} blurRadius
-  */
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
 
+  var isNullish = function isNullish(val) {
+    return val === null || val === undefined;
+  };
   /**
   * @callback module:canvg.ForceRedraw
   * @returns {boolean}
   */
 
-  /**
-  * @function module:canvg.setStackBlurCanvasRGBA
-  * @param {module:canvg.StackBlurCanvasRGBA} cb Will be passed the canvas ID, x, y, width, height, blurRadius
-  * @returns {undefined}
-  */
-
-  var setStackBlurCanvasRGBA = function setStackBlurCanvasRGBA(cb) {
-    canvasRGBA_ = cb;
-  };
   /**
   * @typedef {PlainObject} module:canvg.CanvgOptions
   * @property {boolean} opts.ignoreMouse true => ignore mouse events
@@ -888,14 +882,15 @@ var canvg = (function (exports) {
   * with `<canvas>` elements.
   * @function module:canvg.canvg
   * @param {HTMLCanvasElement|string} target canvas element or the id of a canvas element
-  * @param {string|XMLDocument} s: svg string, url to svg file, or xml document
+  * @param {string|XMLDocument} s - svg string, url to svg file, or xml document
   * @param {module:canvg.CanvgOptions} [opts] Optional hash of options
   * @returns {Promise} All the function after the first render is completed with dom
   */
 
+
   var canvg = function canvg(target, s, opts) {
     // no parameters
-    if (target == null && s == null && opts == null) {
+    if (isNullish(target) && isNullish(s) && isNullish(opts)) {
       var svgTags = document.querySelectorAll('svg');
       return Promise.all(_toConsumableArray(svgTags).map(function (svgTag) {
         var c = document.createElement('canvas');
@@ -914,7 +909,7 @@ var canvg = (function (exports) {
     } // store class on canvas
 
 
-    if (target.svg != null) target.svg.stop();
+    if (!isNullish(target.svg)) target.svg.stop();
     var svg = build(opts || {}); // on i.e. 8 for flash canvas, we can't assign the property so check for it
 
     if (!(target.childNodes.length === 1 && target.childNodes[0].nodeName === 'OBJECT')) {
@@ -949,12 +944,15 @@ var canvg = (function (exports) {
     svg.FRAMERATE = 30;
     svg.MAX_VIRTUAL_PIXELS = 30000;
 
-    svg.log = function (msg) {};
+    svg.log = function (msg) {
+      /* */
+    };
 
     if (svg.opts.log === true && typeof console !== 'undefined') {
       svg.log = function (msg) {
         console.log(msg);
-      };
+      }; // eslint-disable-line no-console
+
     } // globals
 
 
@@ -995,7 +993,7 @@ var canvg = (function (exports) {
           return this.Current().height;
         },
         ComputeSize: function ComputeSize(d) {
-          if (d != null && typeof d === 'number') return d;
+          if (!isNullish(d) && typeof d === 'number') return d;
           if (d === 'x') return this.width();
           if (d === 'y') return this.height();
           return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
@@ -1020,6 +1018,7 @@ var canvg = (function (exports) {
     svg.compressSpaces = function (s) {
       return s.replace(/[\s\r\t\n]+/gm, ' ');
     }; // ajax
+    // Todo: Replace with `fetch` and polyfill
 
 
     svg.ajax = function (url, asynch) {
@@ -1027,6 +1026,7 @@ var canvg = (function (exports) {
 
       if (asynch) {
         return new Promise(function (resolve, reject) {
+          // eslint-disable-line promise/avoid-new
           var req = AJAX.open('GET', url, true);
           req.addEventListener('load', function () {
             resolve(AJAX.responseText);
@@ -1045,13 +1045,13 @@ var canvg = (function (exports) {
       if (window.DOMParser) {
         var parser = new DOMParser();
         return parser.parseFromString(xml, 'text/xml');
-      } else {
-        xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
-        var xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
-        xmlDoc.async = 'false';
-        xmlDoc.loadXML(xml);
-        return xmlDoc;
       }
+
+      xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
+      var xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
+      xmlDoc.async = 'false';
+      xmlDoc.loadXML(xml);
+      return xmlDoc;
     }; // text extensions
     // get the text baseline
 
@@ -1088,7 +1088,7 @@ var canvg = (function (exports) {
       }, {
         key: "hasValue",
         value: function hasValue() {
-          return this.value != null && this.value !== '';
+          return !isNullish(this.value) && this.value !== '';
         } // return the numerical value of the property
 
       }, {
@@ -1097,8 +1097,8 @@ var canvg = (function (exports) {
           if (!this.hasValue()) return 0;
           var n = parseFloat(this.value);
 
-          if ((this.value + '').match(/%$/)) {
-            n = n / 100.0;
+          if (String(this.value).match(/%$/)) {
+            n /= 100.0;
           }
 
           return n;
@@ -1122,7 +1122,7 @@ var canvg = (function (exports) {
         value: function addOpacity(opacityProp) {
           var newValue = this.value;
 
-          if (opacityProp.value != null && opacityProp.value !== '' && typeof this.value === 'string') {
+          if (!isNullish(opacityProp.value) && opacityProp.value !== '' && typeof this.value === 'string') {
             // can only add opacity to colors, not patterns
             var color = new RGBColor(this.value);
 
@@ -1160,12 +1160,12 @@ var canvg = (function (exports) {
         value: function getFillStyleDefinition(e, opacityProp) {
           var def = this.getDefinition(); // gradient
 
-          if (def != null && def.createGradient) {
+          if (!isNullish(def) && def.createGradient) {
             return def.createGradient(svg.ctx, e, opacityProp);
           } // pattern
 
 
-          if (def != null && def.createPattern) {
+          if (!isNullish(def) && def.createPattern) {
             if (def.getHrefAttribute().hasValue()) {
               var pt = def.attribute('patternTransform');
               def = def.getHrefAttribute().getDefinition();
@@ -1197,15 +1197,14 @@ var canvg = (function (exports) {
       }, {
         key: "getUnits",
         value: function getUnits() {
-          var s = this.value + '';
-          return s.replace(/[0-9.-]/g, '');
+          return String(this.value).replace(/[0-9.-]/g, '');
         } // get the length as pixels
 
       }, {
         key: "toPixels",
         value: function toPixels(viewPort, processPercent) {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/em$/)) return this.numValue() * this.getEM(viewPort);
           if (s.match(/ex$/)) return this.numValue() * this.getEM(viewPort) / 2.0;
           if (s.match(/px$/)) return this.numValue();
@@ -1225,7 +1224,7 @@ var canvg = (function (exports) {
         key: "toMilliseconds",
         value: function toMilliseconds() {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/s$/)) return this.numValue() * 1000;
           if (s.match(/ms$/)) return this.numValue();
           return this.numValue();
@@ -1236,7 +1235,7 @@ var canvg = (function (exports) {
         key: "toRadians",
         value: function toRadians() {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/deg$/)) return this.numValue() * (Math.PI / 180.0);
           if (s.match(/grad$/)) return this.numValue() * (Math.PI / 200.0);
           if (s.match(/rad$/)) return this.numValue();
@@ -1259,7 +1258,7 @@ var canvg = (function (exports) {
       Variants: 'normal|small-caps|inherit',
       Weights: 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit',
       CreateFont: function CreateFont(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
-        var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
+        var f = !isNullish(inherit) ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
         return {
           fontFamily: fontFamily || f.fontFamily,
           fontSize: fontSize || f.fontSize,
@@ -1275,7 +1274,7 @@ var canvg = (function (exports) {
         var _this = this;
 
         var f = {};
-        var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
+        var ds = svg.trim(svg.compressSpaces(s || '')).split(' ');
         var set = {
           fontSize: false,
           fontStyle: false,
@@ -1283,7 +1282,7 @@ var canvg = (function (exports) {
           fontVariant: false
         };
         var ff = '';
-        d.forEach(function (d) {
+        ds.forEach(function (d) {
           if (!set.fontStyle && _this.Styles.includes(d)) {
             if (d !== 'inherit') {
               f.fontStyle = d;
@@ -1308,10 +1307,8 @@ var canvg = (function (exports) {
             }
 
             set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
-          } else {
-            if (d !== 'inherit') {
-              ff += d;
-            }
+          } else if (d !== 'inherit') {
+            ff += d;
           }
         });
 
@@ -1325,8 +1322,8 @@ var canvg = (function (exports) {
 
     svg.ToNumberArray = function (s) {
       var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
-      return a.map(function (a) {
-        return parseFloat(a);
+      return a.map(function (_a) {
+        return parseFloat(_a);
       });
     };
 
@@ -1413,7 +1410,7 @@ var canvg = (function (exports) {
       }, {
         key: "addPoint",
         value: function addPoint(x, y) {
-          if (x != null) {
+          if (!isNullish(x)) {
             if (isNaN(this.x1) || isNaN(this.x2)) {
               this.x1 = x;
               this.x2 = x;
@@ -1423,7 +1420,7 @@ var canvg = (function (exports) {
             if (x > this.x2) this.x2 = x;
           }
 
-          if (y != null) {
+          if (!isNullish(y)) {
             if (isNaN(this.y1) || isNaN(this.y2)) {
               this.y1 = y;
               this.y2 = y;
@@ -1577,9 +1574,10 @@ var canvg = (function (exports) {
             };
 
             this.applyToPoint = function (p) {
-              var a = this.angle.toRadians();
+              var _a = this.angle.toRadians();
+
               p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
-              p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
+              p.applyTransform([Math.cos(_a), Math.sin(_a), -Math.sin(_a), Math.cos(_a), 0, 0]);
               p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
             };
           },
@@ -1745,7 +1743,7 @@ var canvg = (function (exports) {
 
       if (align === 'none') ctx.scale(scaleX, scaleY);else if (meetOrSlice === 'meet') ctx.scale(scaleMin, scaleMin);else if (meetOrSlice === 'slice') ctx.scale(scaleMax, scaleMax); // translate
 
-      ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
+      ctx.translate(isNullish(minX) ? 0 : -minX, isNullish(minY) ? 0 : -minY);
     }; // elements
 
 
@@ -1760,13 +1758,14 @@ var canvg = (function (exports) {
 
         _classCallCheck(this, _class4);
 
-        this.captureTextNodes = arguments[1]; // Argument from inheriting class
+        // Argument from inheriting class
+        this.captureTextNodes = arguments[1]; // eslint-disable-line prefer-rest-params
 
         this.attributes = {};
         this.styles = {};
         this.children = [];
 
-        if (node != null && node.nodeType === 1) {
+        if (!isNullish(node) && node.nodeType === 1) {
           // ELEMENT_NODE
           // add children
           _toConsumableArray(node.childNodes).forEach(function (childNode) {
@@ -1795,10 +1794,14 @@ var canvg = (function (exports) {
 
           var styles = svg.Styles[node.nodeName];
 
-          if (styles != null) {
-            for (var name in styles) {
-              this.styles[name] = styles[name];
-            }
+          if (!isNullish(styles)) {
+            Object.entries(styles).forEach(function (_ref2) {
+              var _ref3 = _slicedToArray(_ref2, 2),
+                  name = _ref3[0],
+                  styleValue = _ref3[1];
+
+              _this7.styles[name] = styleValue;
+            });
           } // add class styles
 
 
@@ -1807,18 +1810,26 @@ var canvg = (function (exports) {
             classes.forEach(function (clss) {
               styles = svg.Styles['.' + clss];
 
-              if (styles != null) {
-                for (var _name in styles) {
-                  _this7.styles[_name] = styles[_name];
-                }
+              if (!isNullish(styles)) {
+                Object.entries(styles).forEach(function (_ref4) {
+                  var _ref5 = _slicedToArray(_ref4, 2),
+                      name = _ref5[0],
+                      styleValue = _ref5[1];
+
+                  _this7.styles[name] = styleValue;
+                });
               }
 
               styles = svg.Styles[node.nodeName + '.' + clss];
 
-              if (styles != null) {
-                for (var _name2 in styles) {
-                  _this7.styles[_name2] = styles[_name2];
-                }
+              if (!isNullish(styles)) {
+                Object.entries(styles).forEach(function (_ref6) {
+                  var _ref7 = _slicedToArray(_ref6, 2),
+                      name = _ref7[0],
+                      styleValue = _ref7[1];
+
+                  _this7.styles[name] = styleValue;
+                });
               }
             });
           } // add id styles
@@ -1827,10 +1838,14 @@ var canvg = (function (exports) {
           if (this.attribute('id').hasValue()) {
             var _styles = svg.Styles['#' + this.attribute('id').value];
 
-            if (_styles != null) {
-              for (var _name3 in _styles) {
-                this.styles[_name3] = _styles[_name3];
-              }
+            if (!isNullish(_styles)) {
+              Object.entries(_styles).forEach(function (_ref8) {
+                var _ref9 = _slicedToArray(_ref8, 2),
+                    name = _ref9[0],
+                    styleValue = _ref9[1];
+
+                _this7.styles[name] = styleValue;
+              });
             }
           } // add inline styles
 
@@ -1841,19 +1856,19 @@ var canvg = (function (exports) {
             _styles2.forEach(function (style) {
               if (svg.trim(style) !== '') {
                 var _style$split = style.split(':'),
-                    _name4 = _style$split.name,
+                    name = _style$split.name,
                     value = _style$split.value;
 
-                _name4 = svg.trim(_name4);
+                name = svg.trim(name);
                 value = svg.trim(value);
-                _this7.styles[_name4] = new svg.Property(_name4, value);
+                _this7.styles[name] = new svg.Property(name, value);
               }
             });
           } // add id
 
 
           if (this.attribute('id').hasValue()) {
-            if (svg.Definitions[this.attribute('id').value] == null) {
+            if (isNullish(svg.Definitions[this.attribute('id').value])) {
               svg.Definitions[this.attribute('id').value] = this;
             }
           }
@@ -1865,7 +1880,7 @@ var canvg = (function (exports) {
         key: "attribute",
         value: function attribute(name, createIfNotExists) {
           var a = this.attributes[name];
-          if (a != null) return a;
+          if (!isNullish(a)) return a;
 
           if (createIfNotExists === true) {
             a = new svg.Property(name, '');
@@ -1890,10 +1905,10 @@ var canvg = (function (exports) {
         key: "style",
         value: function style(name, createIfNotExists, skipAncestors) {
           var s = this.styles[name];
-          if (s != null) return s;
+          if (!isNullish(s)) return s;
           var a = this.attribute(name);
 
-          if (a != null && a.hasValue()) {
+          if (!isNullish(a) && a.hasValue()) {
             this.styles[name] = a; // move up to me to cache
 
             return a;
@@ -1902,10 +1917,10 @@ var canvg = (function (exports) {
           if (skipAncestors !== true) {
             var p = this.parent;
 
-            if (p != null) {
+            if (!isNullish(p)) {
               var ps = p.style(name);
 
-              if (ps != null && ps.hasValue()) {
+              if (!isNullish(ps) && ps.hasValue()) {
                 return ps;
               }
             }
@@ -1931,11 +1946,11 @@ var canvg = (function (exports) {
           if (this.attribute('mask').hasValue()) {
             // mask
             var mask = this.attribute('mask').getDefinition();
-            if (mask != null) mask.apply(ctx, this);
+            if (!isNullish(mask)) mask.apply(ctx, this);
           } else if (this.style('filter').hasValue()) {
             // filter
             var filter = this.style('filter').getDefinition();
-            if (filter != null) filter.apply(ctx, this);
+            if (!isNullish(filter)) filter.apply(ctx, this);
           } else {
             this.setContext(ctx);
             this.renderChildren(ctx);
@@ -1994,7 +2009,7 @@ var canvg = (function (exports) {
           // fill
           if (this.style('fill').isUrlDefinition()) {
             var fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
-            if (fs != null) ctx.fillStyle = fs;
+            if (!isNullish(fs)) ctx.fillStyle = fs;
           } else if (this.style('fill').hasValue()) {
             var fillStyle = this.style('fill');
             if (fillStyle.value === 'currentColor') fillStyle.value = this.style('color').value;
@@ -2012,7 +2027,7 @@ var canvg = (function (exports) {
           if (this.style('stroke').isUrlDefinition()) {
             var _fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
 
-            if (_fs != null) ctx.strokeStyle = _fs;
+            if (!isNullish(_fs)) ctx.strokeStyle = _fs;
           } else if (this.style('stroke').hasValue()) {
             var strokeStyle = this.style('stroke');
             if (strokeStyle.value === 'currentColor') strokeStyle.value = this.style('color').value;
@@ -2071,7 +2086,7 @@ var canvg = (function (exports) {
 
           if (this.style('clip-path', false, true).hasValue()) {
             var clip = this.style('clip-path', false, true).getDefinition();
-            if (clip != null) clip.apply(ctx);
+            if (!isNullish(clip)) clip.apply(ctx);
           } // opacity
 
 
@@ -2098,7 +2113,7 @@ var canvg = (function (exports) {
       _createClass(_class6, [{
         key: "path",
         value: function path(ctx) {
-          if (ctx != null) ctx.beginPath();
+          if (!isNullish(ctx)) ctx.beginPath();
           return new svg.BoundingBox();
         }
       }, {
@@ -2118,7 +2133,7 @@ var canvg = (function (exports) {
           if (ctx.strokeStyle !== '') ctx.stroke();
           var markers = this.getMarkers();
 
-          if (markers != null) {
+          if (!isNullish(markers)) {
             if (this.style('marker-start').isUrlDefinition()) {
               var marker = this.style('marker-start').getDefinition();
               marker.render(ctx, markers[0][0], markers[0][1]);
@@ -2263,7 +2278,7 @@ var canvg = (function (exports) {
           rx = Math.min(rx, width / 2.0);
           ry = Math.min(ry, height / 2.0);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(x + rx, y);
             ctx.lineTo(x + width - rx, y);
@@ -2303,7 +2318,7 @@ var canvg = (function (exports) {
           var cy = this.attribute('cy').toPixels('y');
           var r = this.attribute('r').toPixels();
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
             ctx.closePath();
@@ -2338,7 +2353,7 @@ var canvg = (function (exports) {
           var cx = this.attribute('cx').toPixels('x');
           var cy = this.attribute('cy').toPixels('y');
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(cx, cy - ry);
             ctx.bezierCurveTo(cx + KAPPA * rx, cy - ry, cx + rx, cy - KAPPA * ry, cx + rx, cy);
@@ -2377,7 +2392,7 @@ var canvg = (function (exports) {
         value: function path(ctx) {
           var points = this.getPoints();
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(points[0].x, points[0].y);
             ctx.lineTo(points[1].x, points[1].y);
@@ -2421,7 +2436,7 @@ var canvg = (function (exports) {
               y = _this$points$.y;
           var bb = new svg.BoundingBox(x, y);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(x, y);
           }
@@ -2431,7 +2446,7 @@ var canvg = (function (exports) {
                 _x = _this$points$i.x,
                 _y = _this$points$i.y;
             bb.addPoint(_x, _y);
-            if (ctx != null) ctx.lineTo(_x, _y);
+            if (!isNullish(ctx)) ctx.lineTo(_x, _y);
           }
 
           return bb;
@@ -2470,7 +2485,7 @@ var canvg = (function (exports) {
         value: function path(ctx) {
           var bb = _get(_getPrototypeOf(_class13.prototype), "path", this).call(this, ctx);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.lineTo(this.points[0].x, this.points[0].y);
             ctx.closePath();
           }
@@ -2526,7 +2541,7 @@ var canvg = (function (exports) {
           },
           isCommandOrEnd: function isCommandOrEnd() {
             if (this.isEnd()) return true;
-            return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
+            return !isNullish(this.tokens[this.i + 1].match(/^[A-Za-z]$/));
           },
           isRelativeCommand: function isRelativeCommand() {
             switch (this.command) {
@@ -2589,11 +2604,11 @@ var canvg = (function (exports) {
           },
           addMarker: function addMarker(p, from, priorTo) {
             // if the last angle isn't filled in because we didn't have this point yet ...
-            if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length - 1] == null) {
+            if (!isNullish(priorTo) && this.angles.length > 0 && isNullish(this.angles[this.angles.length - 1])) {
               this.angles[this.angles.length - 1] = this.points[this.points.length - 1].angleTo(priorTo);
             }
 
-            this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
+            this.addMarkerAngle(p, isNullish(from) ? null : from.angleTo(p));
           },
           addMarkerAngle: function addMarkerAngle(p, a) {
             this.points.push(p);
@@ -2604,9 +2619,9 @@ var canvg = (function (exports) {
           },
           getMarkerAngles: function getMarkerAngles() {
             for (var i = 0; i < this.angles.length; i++) {
-              if (this.angles[i] == null) {
+              if (isNullish(this.angles[i])) {
                 for (var j = i + 1; j < this.angles.length; j++) {
-                  if (this.angles[j] != null) {
+                  if (!isNullish(this.angles[j])) {
                     this.angles[i] = this.angles[j];
                     break;
                   }
@@ -2626,7 +2641,7 @@ var canvg = (function (exports) {
           var pp = this.PathParser;
           pp.reset();
           var bb = new svg.BoundingBox();
-          if (ctx != null) ctx.beginPath();
+          if (!isNullish(ctx)) ctx.beginPath();
 
           while (!pp.isEnd()) {
             pp.nextCommand();
@@ -2634,22 +2649,24 @@ var canvg = (function (exports) {
             switch (pp.command) {
               case 'M':
               case 'm':
-                var p = pp.getAsCurrentPoint();
-                pp.addMarker(p);
-                bb.addPoint(p.x, p.y);
-                if (ctx != null) ctx.moveTo(p.x, p.y);
-                pp.start = pp.current;
+                {
+                  var p = pp.getAsCurrentPoint();
+                  pp.addMarker(p);
+                  bb.addPoint(p.x, p.y);
+                  if (!isNullish(ctx)) ctx.moveTo(p.x, p.y);
+                  pp.start = pp.current;
 
-                while (!pp.isCommandOrEnd()) {
-                  var _p = pp.getAsCurrentPoint();
+                  while (!pp.isCommandOrEnd()) {
+                    var _p = pp.getAsCurrentPoint();
 
-                  pp.addMarker(_p, pp.start);
-                  bb.addPoint(_p.x, _p.y);
-                  if (ctx != null) ctx.lineTo(_p.x, _p.y);
+                    pp.addMarker(_p, pp.start);
+                    bb.addPoint(_p.x, _p.y);
+                    if (!isNullish(ctx)) ctx.lineTo(_p.x, _p.y);
+                  }
+
+                  break;
                 }
 
-                break;
-
               case 'L':
               case 'l':
                 while (!pp.isCommandOrEnd()) {
@@ -2659,7 +2676,7 @@ var canvg = (function (exports) {
 
                   pp.addMarker(_p2, c);
                   bb.addPoint(_p2.x, _p2.y);
-                  if (ctx != null) ctx.lineTo(_p2.x, _p2.y);
+                  if (!isNullish(ctx)) ctx.lineTo(_p2.x, _p2.y);
                 }
 
                 break;
@@ -2671,7 +2688,7 @@ var canvg = (function (exports) {
                   pp.addMarker(newP, pp.current);
                   pp.current = newP;
                   bb.addPoint(pp.current.x, pp.current.y);
-                  if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+                  if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
                 }
 
                 break;
@@ -2684,7 +2701,7 @@ var canvg = (function (exports) {
                   pp.addMarker(_newP, pp.current);
                   pp.current = _newP;
                   bb.addPoint(pp.current.x, pp.current.y);
-                  if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+                  if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
                 }
 
                 break;
@@ -2698,7 +2715,7 @@ var canvg = (function (exports) {
                   var cp = pp.getAsCurrentPoint();
                   pp.addMarker(cp, cntrl, p1);
                   bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
-                  if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+                  if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
                 }
 
                 break;
@@ -2716,7 +2733,7 @@ var canvg = (function (exports) {
 
                   pp.addMarker(_cp, _cntrl, _p3);
                   bb.addBezierCurve(_curr.x, _curr.y, _p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
-                  if (ctx != null) ctx.bezierCurveTo(_p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
+                  if (!isNullish(ctx)) ctx.bezierCurveTo(_p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
                 }
 
                 break;
@@ -2732,7 +2749,7 @@ var canvg = (function (exports) {
 
                   pp.addMarker(_cp2, _cntrl2, _cntrl2);
                   bb.addQuadraticCurve(_curr2.x, _curr2.y, _cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
-                  if (ctx != null) ctx.quadraticCurveTo(_cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
+                  if (!isNullish(ctx)) ctx.quadraticCurveTo(_cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
                 }
 
                 break;
@@ -2750,7 +2767,7 @@ var canvg = (function (exports) {
 
                   pp.addMarker(_cp3, _cntrl3, _cntrl3);
                   bb.addQuadraticCurve(_curr3.x, _curr3.y, _cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
-                  if (ctx != null) ctx.quadraticCurveTo(_cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
+                  if (!isNullish(ctx)) ctx.quadraticCurveTo(_cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
                 }
 
                 break;
@@ -2814,7 +2831,7 @@ var canvg = (function (exports) {
                   pp.addMarkerAngle(cp, ah - dir * Math.PI);
                   bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
 
-                  if (ctx != null) {
+                  if (!isNullish(ctx)) {
                     var _r = rx > ry ? rx : ry;
 
                     var sx = rx > ry ? 1 : rx / ry;
@@ -2837,7 +2854,7 @@ var canvg = (function (exports) {
 
               case 'Z':
               case 'z':
-                if (ctx != null) ctx.closePath();
+                if (!isNullish(ctx)) ctx.closePath();
                 pp.current = pp.start;
             }
           }
@@ -2878,10 +2895,10 @@ var canvg = (function (exports) {
           var height = this.attribute('height').toPixels('y', true); // render me using a temporary svg element
 
           var tempSvg = new svg.Element.svg();
-          tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
-          tempSvg.attributes['width'] = new svg.Property('width', width + 'px');
-          tempSvg.attributes['height'] = new svg.Property('height', height + 'px');
-          tempSvg.attributes['transform'] = new svg.Property('transform', this.attribute('patternTransform').value);
+          tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
+          tempSvg.attributes.width = new svg.Property('width', width + 'px');
+          tempSvg.attributes.height = new svg.Property('height', height + 'px');
+          tempSvg.attributes.transform = new svg.Property('transform', this.attribute('patternTransform').value);
           tempSvg.children = this.children;
           var c = document.createElement('canvas');
           c.width = width;
@@ -2931,13 +2948,13 @@ var canvg = (function (exports) {
           ctx.save(); // render me using a temporary svg element
 
           var tempSvg = new svg.Element.svg();
-          tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
-          tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
-          tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
-          tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
-          tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
-          tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
-          tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
+          tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
+          tempSvg.attributes.refX = new svg.Property('refX', this.attribute('refX').value);
+          tempSvg.attributes.refY = new svg.Property('refY', this.attribute('refY').value);
+          tempSvg.attributes.width = new svg.Property('width', this.attribute('markerWidth').value);
+          tempSvg.attributes.height = new svg.Property('height', this.attribute('markerHeight').value);
+          tempSvg.attributes.fill = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
+          tempSvg.attributes.stroke = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
           tempSvg.children = this.children;
           tempSvg.render(ctx);
           ctx.restore();
@@ -3014,10 +3031,10 @@ var canvg = (function (exports) {
           };
 
           var g = this.getGradient(ctx, element);
-          if (g == null) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
-          stopsContainer.stops.forEach(function (_ref2) {
-            var offset = _ref2.offset,
-                color = _ref2.color;
+          if (isNullish(g)) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
+          stopsContainer.stops.forEach(function (_ref10) {
+            var offset = _ref10.offset,
+                color = _ref10.color;
             g.addColorStop(offset, addParentOpacity(color));
           });
 
@@ -3025,18 +3042,18 @@ var canvg = (function (exports) {
             // render as transformed pattern on temporary canvas
             var rootView = svg.ViewPort.viewPorts[0];
             var rect = new svg.Element.rect();
-            rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
-            rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
-            rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
-            rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
+            rect.attributes.x = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
+            rect.attributes.y = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
+            rect.attributes.width = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
+            rect.attributes.height = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
             var group = new svg.Element.g();
-            group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
+            group.attributes.transform = new svg.Property('transform', this.attribute('gradientTransform').value);
             group.children = [rect];
             var tempSvg = new svg.Element.svg();
-            tempSvg.attributes['x'] = new svg.Property('x', 0);
-            tempSvg.attributes['y'] = new svg.Property('y', 0);
-            tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
-            tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
+            tempSvg.attributes.x = new svg.Property('x', 0);
+            tempSvg.attributes.y = new svg.Property('y', 0);
+            tempSvg.attributes.width = new svg.Property('width', rootView.width);
+            tempSvg.attributes.height = new svg.Property('height', rootView.height);
             tempSvg.children = [group];
             var c = document.createElement('canvas');
             c.width = rootView.width;
@@ -3209,7 +3226,7 @@ var canvg = (function (exports) {
         key: "update",
         value: function update(delta) {
           // set initial value
-          if (this.initialValue == null) {
+          if (isNullish(this.initialValue)) {
             this.initialValue = this.getProperty().value;
             this.initialUnits = this.getProperty().getUnits();
           } // if we're past the end time
@@ -3327,7 +3344,7 @@ var canvg = (function (exports) {
             var r = from.r + (to.r - from.r) * p.progress;
             var g = from.g + (to.g - from.g) * p.progress;
             var b = from.b + (to.b - from.b) * p.progress;
-            return 'rgb(' + parseInt(r, 10) + ',' + parseInt(g, 10) + ',' + parseInt(b, 10) + ')';
+            return 'rgb(' + parseInt(r) + ',' + parseInt(g) + ',' + parseInt(b) + ')';
           }
 
           return this.attribute('from').value;
@@ -3496,8 +3513,8 @@ var canvg = (function (exports) {
           _get(_getPrototypeOf(_class30.prototype), "setContext", this).call(this, ctx);
 
           var textBaseline = this.style('dominant-baseline').toTextBaseline();
-          if (textBaseline == null) textBaseline = this.style('alignment-baseline').toTextBaseline();
-          if (textBaseline != null) ctx.textBaseline = textBaseline;
+          if (isNullish(textBaseline)) textBaseline = this.style('alignment-baseline').toTextBaseline();
+          if (!isNullish(textBaseline)) ctx.textBaseline = textBaseline;
         }
       }, {
         key: "getBoundingBox",
@@ -3567,8 +3584,8 @@ var canvg = (function (exports) {
           this.y = child.y;
           child.render(ctx);
 
-          for (var _i = 0; _i < child.children.length; _i++) {
-            this.renderChild(ctx, child, _i);
+          for (var j = 0; j < child.children.length; j++) {
+            this.renderChild(ctx, child, j);
           }
         }
       }]);
@@ -3602,13 +3619,13 @@ var canvg = (function (exports) {
 
             if (typeof font.glyphs[c] !== 'undefined') {
               glyph = font.glyphs[c][arabicForm];
-              if (glyph == null && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
+              if (isNullish(glyph) && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
             }
           } else {
             glyph = font.glyphs[c];
           }
 
-          if (glyph == null) glyph = font.missingGlyph;
+          if (isNullish(glyph)) glyph = font.missingGlyph;
           return glyph;
         }
       }, {
@@ -3616,7 +3633,7 @@ var canvg = (function (exports) {
         value: function renderChildren(ctx) {
           var customFont = this.parent.style('font-family').getDefinition();
 
-          if (customFont != null) {
+          if (!isNullish(customFont)) {
             var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
             var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
             var text = this.getText();
@@ -3667,7 +3684,7 @@ var canvg = (function (exports) {
         value: function measureText(ctx) {
           var customFont = this.parent.style('font-family').getDefinition();
 
-          if (customFont != null) {
+          if (!isNullish(customFont)) {
             var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
             var measure = 0;
             var text = this.getText();
@@ -3744,7 +3761,8 @@ var canvg = (function (exports) {
         key: "getText",
         value: function getText() {
           var element = this.getHrefAttribute().getDefinition();
-          if (element != null) return element.children[0].getText();
+          if (!isNullish(element)) return element.children[0].getText();
+          return undefined;
         }
       }]);
 
@@ -3843,22 +3861,25 @@ var canvg = (function (exports) {
             _this20.img.crossOrigin = 'Anonymous';
           }
 
-          var self = _assertThisInitialized(_assertThisInitialized(_this20));
-
           _this20.img.onload = function () {
-            self.loaded = true;
+            _this20.loaded = true;
           };
 
           _this20.img.onerror = function () {
             svg.log('ERROR: image "' + href + '" not found');
-            self.loaded = true;
+            _this20.loaded = true;
           };
 
           _this20.img.src = href;
         } else {
           svg.ajax(href, true).then(function (img) {
+            // eslint-disable-line promise/prefer-await-to-then, promise/always-return
             _this20.img = img;
             _this20.loaded = true;
+          }).catch(function (err) {
+            // eslint-disable-line promise/prefer-await-to-callbacks
+            _this20.erred = true;
+            console.error('Ajax error for canvg', err); // eslint-disable-line no-console
           });
         }
 
@@ -3961,8 +3982,8 @@ var canvg = (function (exports) {
 
         var css = '';
 
-        _toConsumableArray(node.childNodes).forEach(function (_ref3) {
-          var nodeValue = _ref3.nodeValue;
+        _toConsumableArray(node.childNodes).forEach(function (_ref11) {
+          var nodeValue = _ref11.nodeValue;
           css += nodeValue;
         });
 
@@ -3990,7 +4011,7 @@ var canvg = (function (exports) {
                   var name = cssProp.substr(0, prop);
                   var value = cssProp.substr(prop + 1, cssProp.length - prop);
 
-                  if (name != null && value != null) {
+                  if (!isNullish(name) && !isNullish(value)) {
                     props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
                   }
                 });
@@ -3998,7 +4019,7 @@ var canvg = (function (exports) {
 
                 if (cssClass === '@font-face') {
                   var fontFamily = props['font-family'].value.replace(/"/g, '');
-                  var srcs = props['src'].value.split(',');
+                  var srcs = props.src.value.split(',');
                   srcs.forEach(function (src) {
                     if (src.includes('format("svg")')) {
                       var urlStart = src.indexOf('url');
@@ -4053,36 +4074,37 @@ var canvg = (function (exports) {
         key: "path",
         value: function path(ctx) {
           var element = this._el;
-          if (element != null) element.path(ctx);
+          if (!isNullish(element)) element.path(ctx);
         }
       }, {
         key: "getBoundingBox",
         value: function getBoundingBox() {
           var element = this._el;
-          if (element != null) return element.getBoundingBox();
+          if (!isNullish(element)) return element.getBoundingBox();
+          return undefined;
         }
       }, {
         key: "renderChildren",
         value: function renderChildren(ctx) {
           var element = this._el;
 
-          if (element != null) {
+          if (!isNullish(element)) {
             var tempSvg = element;
 
             if (element.type === 'symbol') {
               // render me using a temporary svg element in symbol cases (https://www.w3.org/TR/SVG/struct.html#UseElement)
               tempSvg = new svg.Element.svg();
               tempSvg.type = 'svg';
-              tempSvg.attributes['viewBox'] = new svg.Property('viewBox', element.attribute('viewBox').value);
-              tempSvg.attributes['preserveAspectRatio'] = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
-              tempSvg.attributes['overflow'] = new svg.Property('overflow', element.attribute('overflow').value);
+              tempSvg.attributes.viewBox = new svg.Property('viewBox', element.attribute('viewBox').value);
+              tempSvg.attributes.preserveAspectRatio = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
+              tempSvg.attributes.overflow = new svg.Property('overflow', element.attribute('overflow').value);
               tempSvg.children = element.children;
             }
 
             if (tempSvg.type === 'svg') {
               // if symbol or svg, inherit width/height from me
-              if (this.attribute('width').hasValue()) tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
-              if (this.attribute('height').hasValue()) tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
+              if (this.attribute('width').hasValue()) tempSvg.attributes.width = new svg.Property('width', this.attribute('width').value);
+              if (this.attribute('height').hasValue()) tempSvg.attributes.height = new svg.Property('height', this.attribute('height').value);
             }
 
             var oldParent = tempSvg.parent;
@@ -4294,10 +4316,31 @@ var canvg = (function (exports) {
 
       return _class44;
     }(svg.Element.ElementBase);
+    /**
+    * @param {Uint8ClampedArray} img
+    * @param {Integer} x
+    * @param {Integer} y
+    * @param {Float} width
+    * @param {Float} height
+    * @param {Integer} rgba
+    * @returns {undefined}
+    */
+
 
     function imGet(img, x, y, width, height, rgba) {
       return img[y * width * 4 + x * 4 + rgba];
     }
+    /**
+    * @param {Uint8ClampedArray} img
+    * @param {Integer} x
+    * @param {Integer} y
+    * @param {Float} width
+    * @param {Float} height
+    * @param {Integer} rgba
+    * @param {Float} val
+    * @returns {undefined}
+    */
+
 
     function imSet(img, x, y, width, height, rgba, val) {
       img[y * width * 4 + x * 4 + rgba] = val;
@@ -4319,19 +4362,23 @@ var canvg = (function (exports) {
         switch (_this23.attribute('type').valueOrDefault('matrix')) {
           // https://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
           case 'saturate':
-            var s = matrix[0];
-            matrix = [0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
-            break;
+            {
+              var s = matrix[0];
+              matrix = [0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
+              break;
+            }
 
           case 'hueRotate':
-            var a = matrix[0] * Math.PI / 180.0;
+            {
+              var a = matrix[0] * Math.PI / 180.0;
 
-            var c = function c(m1, m2, m3) {
-              return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
-            };
+              var c = function c(m1, m2, m3) {
+                return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
+              };
 
-            matrix = [c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0, c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0, c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
-            break;
+              matrix = [c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0, c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0, c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
+              break;
+            }
 
           case 'luminanceToAlpha':
             matrix = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.2125, 0.7154, 0.0721, 0, 0, 0, 0, 0, 0, 1];
@@ -4355,16 +4402,16 @@ var canvg = (function (exports) {
 
           var srcData = ctx.getImageData(0, 0, width, height);
 
-          for (var _y2 = 0; _y2 < height; _y2++) {
-            for (var _x2 = 0; _x2 < width; _x2++) {
-              var r = imGet(srcData.data, _x2, _y2, width, height, 0);
-              var g = imGet(srcData.data, _x2, _y2, width, height, 1);
-              var b = imGet(srcData.data, _x2, _y2, width, height, 2);
-              var a = imGet(srcData.data, _x2, _y2, width, height, 3);
-              imSet(srcData.data, _x2, _y2, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
+          for (var _y = 0; _y < height; _y++) {
+            for (var _x = 0; _x < width; _x++) {
+              var r = imGet(srcData.data, _x, _y, width, height, 0);
+              var g = imGet(srcData.data, _x, _y, width, height, 1);
+              var b = imGet(srcData.data, _x, _y, width, height, 2);
+              var a = imGet(srcData.data, _x, _y, width, height, 3);
+              imSet(srcData.data, _x, _y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
+              imSet(srcData.data, _x, _y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
+              imSet(srcData.data, _x, _y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
+              imSet(srcData.data, _x, _y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
             }
           }
 
@@ -4395,17 +4442,12 @@ var canvg = (function (exports) {
       _createClass(_class46, [{
         key: "apply",
         value: function apply(ctx, x, y, width, height) {
-          if (typeof canvasRGBA_ !== 'function') {
-            svg.log('ERROR: The function `setStackBlurCanvasRGBA` must be present for blur to work');
-            return;
-          } // Todo: This might not be a problem anymore with out `instanceof` fix
+          // Todo: This might not be a problem anymore with out `instanceof` fix
           // StackBlur requires canvas be on document
-
-
           ctx.canvas.id = svg.UniqueId();
           ctx.canvas.style.display = 'none';
           document.body.append(ctx.canvas);
-          canvasRGBA_(ctx.canvas, x, y, width, height, this.blurRadius);
+          processCanvasRGBA(ctx.canvas, x, y, width, height, this.blurRadius);
           ctx.canvas.remove();
         }
       }]);
@@ -4482,7 +4524,7 @@ var canvg = (function (exports) {
     svg.load =
     /*#__PURE__*/
     function () {
-      var _ref4 = _asyncToGenerator(
+      var _ref12 = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(ctx, url) {
         var dom;
@@ -4505,8 +4547,8 @@ var canvg = (function (exports) {
         }, _callee, this);
       }));
 
-      return function (_x3, _x4) {
-        return _ref4.apply(this, arguments);
+      return function (_x2, _x3) {
+        return _ref12.apply(this, arguments);
       };
     }(); // load from xml
 
@@ -4536,7 +4578,7 @@ var canvg = (function (exports) {
 
       if (svg.opts.ignoreMouse !== true) {
         ctx.canvas.onclick = function (e) {
-          var args = e != null ? [e.clientX, e.clientY] : [event.clientX, event.clientY];
+          var args = !isNullish(e) ? [e.clientX, e.clientY] : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
 
           var _mapXY = mapXY(_construct(svg.Point, args)),
               x = _mapXY.x,
@@ -4546,7 +4588,7 @@ var canvg = (function (exports) {
         };
 
         ctx.canvas.onmousemove = function (e) {
-          var args = e != null ? [e.clientX, e.clientY] : [event.clientX, event.clientY];
+          var args = !isNullish(e) ? [e.clientX, e.clientY] : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
 
           var _mapXY2 = mapXY(_construct(svg.Point, args)),
               x = _mapXY2.x,
@@ -4591,20 +4633,20 @@ var canvg = (function (exports) {
 
         svg.ViewPort.SetCurrent(cWidth, cHeight);
 
-        if (svg.opts.offsetX != null) {
+        if (!isNullish(svg.opts.offsetX)) {
           e.attribute('x', true).value = svg.opts.offsetX;
         }
 
-        if (svg.opts.offsetY != null) {
+        if (!isNullish(svg.opts.offsetY)) {
           e.attribute('y', true).value = svg.opts.offsetY;
         }
 
-        if (svg.opts.scaleWidth != null || svg.opts.scaleHeight != null) {
+        if (!isNullish(svg.opts.scaleWidth) || !isNullish(svg.opts.scaleHeight)) {
           var viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
           var xRatio = null,
               yRatio = null;
 
-          if (svg.opts.scaleWidth != null) {
+          if (!isNullish(svg.opts.scaleWidth)) {
             if (e.attribute('width').hasValue()) {
               xRatio = e.attribute('width').toPixels('x') / svg.opts.scaleWidth;
             } else if (!isNaN(viewBox[2])) {
@@ -4612,7 +4654,7 @@ var canvg = (function (exports) {
             }
           }
 
-          if (svg.opts.scaleHeight != null) {
+          if (!isNullish(svg.opts.scaleHeight)) {
             if (e.attribute('height').hasValue()) {
               yRatio = e.attribute('height').toPixels('y') / svg.opts.scaleHeight;
             } else if (!isNaN(viewBox[3])) {
@@ -4620,11 +4662,11 @@ var canvg = (function (exports) {
             }
           }
 
-          if (xRatio == null) {
+          if (isNullish(xRatio)) {
             xRatio = yRatio;
           }
 
-          if (yRatio == null) {
+          if (isNullish(yRatio)) {
             yRatio = xRatio;
           }
 
@@ -4658,13 +4700,14 @@ var canvg = (function (exports) {
 
 
         if (svg.opts.ignoreMouse !== true) {
-          needUpdate = needUpdate | svg.Mouse.hasEvents();
+          needUpdate = needUpdate || svg.Mouse.hasEvents();
         } // need update from animations?
 
 
         if (svg.opts.ignoreAnimation !== true) {
           svg.Animations.forEach(function (animation) {
-            needUpdate = needUpdate | animation.update(1000 / svg.FRAMERATE);
+            var needAnimationUpdate = animation.update(1000 / svg.FRAMERATE);
+            needUpdate = needUpdate || needAnimationUpdate;
           });
         } // need update from redraw?
 
@@ -4680,8 +4723,10 @@ var canvg = (function (exports) {
           draw(res);
           svg.Mouse.runEvents(); // run and clear our events
         }
-      }, 1000 / svg.FRAMERATE);
+      }, 1000 / svg.FRAMERATE); // Todo: Replace with an image loading Promise utility?
+
       return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
         if (svg.ImagesLoaded()) {
           waitingForImages = false;
           draw(resolve);
@@ -4727,9 +4772,9 @@ var canvg = (function (exports) {
       checkPath: function checkPath(element, ctx) {
         var _this26 = this;
 
-        this.events.forEach(function (_ref5, i) {
-          var x = _ref5.x,
-              y = _ref5.y;
+        this.events.forEach(function (_ref13, i) {
+          var x = _ref13.x,
+              y = _ref13.y;
 
           if (ctx.isPointInPath && ctx.isPointInPath(x, y)) {
             _this26.eventElements[i] = element;
@@ -4739,9 +4784,9 @@ var canvg = (function (exports) {
       checkBoundingBox: function checkBoundingBox(element, bb) {
         var _this27 = this;
 
-        this.events.forEach(function (_ref6, i) {
-          var x = _ref6.x,
-              y = _ref6.y;
+        this.events.forEach(function (_ref14, i) {
+          var x = _ref14.x,
+              y = _ref14.y;
 
           if (bb.isPointInBox(x, y)) {
             _this27.eventElements[i] = element;
@@ -4783,7 +4828,6 @@ var canvg = (function (exports) {
     };
   }
 
-  exports.setStackBlurCanvasRGBA = setStackBlurCanvasRGBA;
   exports.canvg = canvg;
 
   return exports;
diff --git a/dist/dom-polyfill.js b/dist/dom-polyfill.js
index 3ace743b..ddcfed73 100644
--- a/dist/dom-polyfill.js
+++ b/dist/dom-polyfill.js
@@ -2,6 +2,17 @@
   'use strict';
 
   // From https://github.com/inexorabletash/polyfill/blob/master/dom.js
+
+  /**
+   * @module DOMPolyfill
+   */
+
+  /**
+   *
+   * @param {Node} o
+   * @param {module:DOMPolyfill~ParentNode|module:DOMPolyfill~ChildNode} ps
+   * @returns {undefined}
+   */
   function mixin(o, ps) {
     if (!o) return;
     Object.keys(ps).forEach(function (p) {
@@ -17,6 +28,12 @@
       }
     });
   }
+  /**
+   *
+   * @param {Node[]} nodes
+   * @returns {Node}
+   */
+
 
   function convertNodesIntoANode(nodes) {
     nodes = nodes.map(function (node) {
diff --git a/dist/extensions/ext-arrows.js b/dist/extensions/ext-arrows.js
index 90ff8a20..94908b34 100644
--- a/dist/extensions/ext-arrows.js
+++ b/dist/extensions/ext-arrows.js
@@ -37,8 +37,6 @@ var svgEditorExtension_arrows = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-arrows.js
    *
@@ -53,12 +51,12 @@ var svgEditorExtension_arrows = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee2(S) {
-        var strings, svgEditor, svgCanvas, $, addElem, nonce, prefix, selElems, arrowprefix, randomizeIds, setArrowNonce, unsetArrowNonce, pathdata, getLinked, showPanel, resetMarker, addMarker, setArrow, colorChanged, contextTools;
+        var strings, svgEditor, svgCanvas, addElem, nonce, $, prefix, selElems, arrowprefix, randomizeIds, setArrowNonce, unsetArrowNonce, pathdata, getLinked, showPanel, resetMarker, addMarker, setArrow, colorChanged, contextTools;
         return regeneratorRuntime.wrap(function _callee2$(_context2) {
           while (1) {
             switch (_context2.prev = _context2.next) {
               case 0:
-                colorChanged = function _ref9(elem) {
+                colorChanged = function _ref10(elem) {
                   var color = elem.getAttribute('stroke');
                   var mtypes = ['start', 'mid', 'end'];
                   var defs = svgCanvas.findDefs();
@@ -84,7 +82,7 @@ var svgEditorExtension_arrows = (function () {
 
                       if (attrs.fill === color && attrs.d === curD) {
                         // Found another marker with this color and this path
-                        newMarker = this;
+                        newMarker = this; // eslint-disable-line consistent-this
                       }
                     });
 
@@ -100,17 +98,22 @@ var svgEditorExtension_arrows = (function () {
 
                     var remove = true;
                     $(S.svgcontent).find('line, polyline, path, polygon').each(function () {
-                      var elem = this;
+                      var element = this; // eslint-disable-line consistent-this
+
                       $.each(mtypes, function (j, mtype) {
-                        if ($(elem).attr('marker-' + mtype) === 'url(#' + marker.id + ')') {
+                        if ($(element).attr('marker-' + mtype) === 'url(#' + marker.id + ')') {
                           remove = false;
                           return remove;
                         }
+
+                        return undefined;
                       });
 
                       if (!remove) {
                         return false;
                       }
+
+                      return undefined;
                     }); // Not found, so can safely remove
 
                     if (remove) {
@@ -119,7 +122,7 @@ var svgEditorExtension_arrows = (function () {
                   });
                 };
 
-                setArrow = function _ref8() {
+                setArrow = function _ref9() {
                   resetMarker();
                   var type = this.value;
 
@@ -147,7 +150,7 @@ var svgEditorExtension_arrows = (function () {
                   svgCanvas.call('changed', selElems);
                 };
 
-                addMarker = function _ref7(dir, type, id) {
+                addMarker = function _ref8(dir, type, id) {
                   // TODO: Make marker (or use?) per arrow type, since refX can be different
                   id = id || arrowprefix + dir;
                   var data = pathdata[dir];
@@ -188,14 +191,14 @@ var svgEditorExtension_arrows = (function () {
                   return marker;
                 };
 
-                resetMarker = function _ref6() {
+                resetMarker = function _ref7() {
                   var el = selElems[0];
                   el.removeAttribute('marker-start');
                   el.removeAttribute('marker-mid');
                   el.removeAttribute('marker-end');
                 };
 
-                showPanel = function _ref5(on) {
+                showPanel = function _ref6(on) {
                   $('#arrow_panel').toggle(on);
 
                   if (on) {
@@ -227,7 +230,7 @@ var svgEditorExtension_arrows = (function () {
                   }
                 };
 
-                getLinked = function _ref4(elem, attr) {
+                getLinked = function _ref5(elem, attr) {
                   var str = elem.getAttribute(attr);
 
                   if (!str) {
@@ -243,14 +246,14 @@ var svgEditorExtension_arrows = (function () {
                   return svgCanvas.getElem(m[1]);
                 };
 
-                unsetArrowNonce = function _ref3(window) {
+                unsetArrowNonce = function _ref4(win) {
                   randomizeIds = false;
                   arrowprefix = prefix;
                   pathdata.fw.id = arrowprefix + 'fw';
                   pathdata.bk.id = arrowprefix + 'bk';
                 };
 
-                setArrowNonce = function _ref2(window, n) {
+                setArrowNonce = function _ref3(win, n) {
                   randomizeIds = true;
                   arrowprefix = prefix + n + '_';
                   pathdata.fw.id = arrowprefix + 'fw';
@@ -264,10 +267,15 @@ var svgEditorExtension_arrows = (function () {
                 strings = _context2.sent;
                 svgEditor = this;
                 svgCanvas = svgEditor.canvas;
-                $ = jQuery;
                 // {svgcontent} = S,
-                addElem = svgCanvas.addSVGElementFromJson, nonce = S.nonce, prefix = 'se_arrow_';
+                addElem = svgCanvas.addSVGElementFromJson, nonce = S.nonce, $ = S.$, prefix = 'se_arrow_';
                 randomizeIds = S.randomize_ids;
+                /**
+                * @param {Window} win
+                * @param {!(string|Integer)} n
+                * @returns {undefined}
+                */
+
                 svgCanvas.bind('setnonce', setArrowNonce);
                 svgCanvas.bind('unsetnonce', unsetArrowNonce);
 
@@ -289,6 +297,13 @@ var svgEditorExtension_arrows = (function () {
                     id: arrowprefix + 'bk'
                   }
                 };
+                /**
+                 * Gets linked element.
+                 * @param {Element} elem
+                 * @param {string} attr
+                 * @returns {Element}
+                */
+
                 contextTools = [{
                   type: 'select',
                   panel: 'arrow_panel',
@@ -312,7 +327,8 @@ var svgEditorExtension_arrows = (function () {
                     var _addLangData = _asyncToGenerator(
                     /*#__PURE__*/
                     regeneratorRuntime.mark(function _callee(_ref) {
-                      var lang, importLocale, strings;
+                      var lang, importLocale, _ref2, langList;
+
                       return regeneratorRuntime.wrap(function _callee$(_context) {
                         while (1) {
                           switch (_context.prev = _context.next) {
@@ -322,12 +338,13 @@ var svgEditorExtension_arrows = (function () {
                               return importLocale();
 
                             case 3:
-                              strings = _context.sent;
+                              _ref2 = _context.sent;
+                              langList = _ref2.langList;
                               return _context.abrupt("return", {
-                                data: strings.langList
+                                data: langList
                               });
 
-                            case 5:
+                            case 6:
                             case "end":
                               return _context.stop();
                           }
@@ -372,7 +389,7 @@ var svgEditorExtension_arrows = (function () {
                   }
                 });
 
-              case 22:
+              case 21:
               case "end":
                 return _context2.stop();
             }
diff --git a/dist/extensions/ext-closepath.js b/dist/extensions/ext-closepath.js
index fe4fad06..39a84fd7 100644
--- a/dist/extensions/ext-closepath.js
+++ b/dist/extensions/ext-closepath.js
@@ -37,8 +37,6 @@ var svgEditorExtension_closepath = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-closepath.js
    *
@@ -55,18 +53,17 @@ var svgEditorExtension_closepath = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(_ref) {
-        var importLocale, strings, $, svgEditor, selElems, updateButton, showPanel, toggleClosed, buttons;
+        var importLocale, $, strings, svgEditor, selElems, updateButton, showPanel, toggleClosed, buttons;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
               case 0:
-                importLocale = _ref.importLocale;
+                importLocale = _ref.importLocale, $ = _ref.$;
                 _context.next = 3;
                 return importLocale();
 
               case 3:
                 strings = _context.sent;
-                $ = jQuery;
                 svgEditor = this;
 
                 updateButton = function updateButton(path) {
@@ -157,7 +154,7 @@ var svgEditorExtension_closepath = (function () {
                   }
                 });
 
-              case 11:
+              case 10:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-connector.js b/dist/extensions/ext-connector.js
index d2821767..ce0a73ff 100644
--- a/dist/extensions/ext-connector.js
+++ b/dist/extensions/ext-connector.js
@@ -37,8 +37,6 @@ var svgEditorExtension_connector = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-connector.js
    *
@@ -52,11 +50,11 @@ var svgEditorExtension_connector = (function () {
     init: function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee2(S) {
-        var $, svgEditor, svgCanvas, getElem, svgroot, importLocale, addElem, selManager, connSel, elData, strings, startX, startY, curLine, startElem, endElem, seNs, svgcontent, started, connections, selElems, getBBintersect, getOffset, showPanel, setPoint, updateLine, findConnectors, updateConnectors, init, buttons;
-        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+      regeneratorRuntime.mark(function _callee(S) {
+        var svgEditor, svgCanvas, getElem, $, svgroot, importLocale, addElem, selManager, connSel, elData, strings, startX, startY, curLine, startElem, endElem, seNs, svgcontent, started, connections, selElems, getBBintersect, getOffset, showPanel, setPoint, updateLine, findConnectors, updateConnectors, init, buttons;
+        return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
-            switch (_context2.prev = _context2.next) {
+            switch (_context.prev = _context.next) {
               case 0:
                 init = function _ref9() {
                   // Make sure all connectors have data set
@@ -133,6 +131,10 @@ var svgEditorExtension_connector = (function () {
 
                   connectors.each(function () {
                     var addThis;
+                    /**
+                    *
+                    * @returns {undefined}
+                    */
 
                     function add() {
                       if (elems.includes(this)) {
@@ -147,14 +149,15 @@ var svgEditorExtension_connector = (function () {
                       var key = 'c_' + pos;
                       var part = elData(this, key);
 
-                      if (part == null) {
+                      if (part === null || part === undefined) {
+                        // Does this ever return nullish values?
                         part = document.getElementById(this.attributes['se:connector'].value.split(' ')[i]);
                         elData(this, 'c_' + pos, part.id);
                         elData(this, pos + '_bb', svgCanvas.getStrokedBBox([part]));
                       } else part = document.getElementById(part);
 
                       parts.push(part);
-                    }.bind(this));
+                    }, this);
 
                     for (var i = 0; i < 2; i++) {
                       var cElem = parts[i];
@@ -257,7 +260,7 @@ var svgEditorExtension_connector = (function () {
                 };
 
                 getOffset = function _ref3(side, line) {
-                  var giveOffset = !!line.getAttribute('marker-' + side); // const giveOffset = $(line).data(side+'_off');
+                  var giveOffset = line.getAttribute('marker-' + side); // const giveOffset = $(line).data(side+'_off');
                   // TODO: Make this number (5) be based on marker width/height
 
                   var size = line.getAttribute('stroke-width') * 5;
@@ -293,17 +296,24 @@ var svgEditorExtension_connector = (function () {
                   };
                 };
 
-                $ = jQuery;
                 svgEditor = this;
                 svgCanvas = svgEditor.canvas;
                 getElem = svgCanvas.getElem;
-                svgroot = S.svgroot, importLocale = S.importLocale, addElem = svgCanvas.addSVGElementFromJson, selManager = S.selectorManager, connSel = '.se_connector', elData = $.data;
-                _context2.next = 15;
+                $ = S.$, svgroot = S.svgroot, importLocale = S.importLocale, addElem = svgCanvas.addSVGElementFromJson, selManager = S.selectorManager, connSel = '.se_connector', elData = $.data;
+                _context.next = 14;
                 return importLocale();
 
-              case 15:
-                strings = _context2.sent;
+              case 14:
+                strings = _context.sent;
                 svgcontent = S.svgcontent, started = false, connections = [], selElems = [];
+                /**
+                 *
+                 * @param {Float} x
+                 * @param {Float} y
+                 * @param {module:utilities.BBoxObject} bb
+                 * @param {Float} offset
+                 * @returns {module:math.XYObject}
+                 */
 
                 // Do once
                 (function () {
@@ -311,19 +321,32 @@ var svgEditorExtension_connector = (function () {
 
                   svgCanvas.groupSelectedElements = function () {
                     svgCanvas.removeFromSelection($(connSel).toArray());
-                    return gse.apply(this, arguments);
+
+                    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+                      args[_key] = arguments[_key];
+                    }
+
+                    return gse.apply(this, args);
                   };
 
                   var mse = svgCanvas.moveSelectedElements;
 
                   svgCanvas.moveSelectedElements = function () {
-                    var cmd = mse.apply(this, arguments);
+                    for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+                      args[_key2] = arguments[_key2];
+                    }
+
+                    var cmd = mse.apply(this, args);
                     updateConnectors();
                     return cmd;
                   };
 
                   seNs = svgCanvas.getEditorNS();
-                })(); // Do on reset
+                })();
+                /**
+                * Do on reset.
+                * @returns {undefined}
+                */
 
 
                 // $(svgroot).parent().mousemove(function (e) {
@@ -351,38 +374,21 @@ var svgEditorExtension_connector = (function () {
                     }
                   }
                 }];
-                return _context2.abrupt("return", {
+                return _context.abrupt("return", {
                   name: strings.name,
                   svgicons: svgEditor.curConfig.imgPath + 'conn.svg',
                   buttons: strings.buttons.map(function (button, i) {
                     return Object.assign(buttons[i], button);
                   }),
-                  addLangData: function () {
-                    var _addLangData = _asyncToGenerator(
-                    /*#__PURE__*/
-                    regeneratorRuntime.mark(function _callee(_ref) {
-                      var lang, importLocale;
-                      return regeneratorRuntime.wrap(function _callee$(_context) {
-                        while (1) {
-                          switch (_context.prev = _context.next) {
-                            case 0:
-                              lang = _ref.lang, importLocale = _ref.importLocale;
-                              return _context.abrupt("return", {
-                                data: strings.langList
-                              });
 
-                            case 2:
-                            case "end":
-                              return _context.stop();
-                          }
-                        }
-                      }, _callee, this);
-                    }));
-
-                    return function addLangData(_x2) {
-                      return _addLangData.apply(this, arguments);
+                  /* async */
+                  addLangData: function addLangData(_ref) {
+                    var lang = _ref.lang;
+                    // , importLocale: importLoc
+                    return {
+                      data: strings.langList
                     };
-                  }(),
+                  },
                   mouseDown: function mouseDown(opts) {
                     var e = opts.event;
                     startX = opts.start_x;
@@ -392,7 +398,7 @@ var svgEditorExtension_connector = (function () {
 
                     if (mode === 'connector') {
                       if (started) {
-                        return;
+                        return undefined;
                       }
 
                       var mouseTarget = e.target;
@@ -431,6 +437,8 @@ var svgEditorExtension_connector = (function () {
                     if (mode === 'select') {
                       findConnectors();
                     }
+
+                    return undefined;
                   },
                   mouseMove: function mouseMove(opts) {
                     var zoom = svgCanvas.getZoom(); // const e = opts.event;
@@ -476,7 +484,7 @@ var svgEditorExtension_connector = (function () {
                     var mouseTarget = e.target;
 
                     if (svgCanvas.getMode() !== 'connector') {
-                      return;
+                      return undefined;
                     }
 
                     var fo = $(mouseTarget).closest('foreignObject');
@@ -521,6 +529,8 @@ var svgEditorExtension_connector = (function () {
                       if (conn === connStr || conn === altStr) {
                         return true;
                       }
+
+                      return false;
                     });
 
                     if (dupe.length) {
@@ -598,7 +608,7 @@ var svgEditorExtension_connector = (function () {
                       var mid = elem.getAttribute('marker-mid');
                       var end = elem.getAttribute('marker-end');
                       curLine = elem;
-                      $(elem).data('start_off', !!start).data('end_off', !!end);
+                      $(elem).data('start_off', Boolean(start)).data('end_off', Boolean(end));
 
                       if (elem.tagName === 'line' && mid) {
                         // Convert to polyline to accept mid-arrow
@@ -666,12 +676,12 @@ var svgEditorExtension_connector = (function () {
                   }
                 });
 
-              case 20:
+              case 19:
               case "end":
-                return _context2.stop();
+                return _context.stop();
             }
           }
-        }, _callee2, this);
+        }, _callee, this);
       }));
 
       return function init(_x) {
diff --git a/dist/extensions/ext-eyedropper.js b/dist/extensions/ext-eyedropper.js
index d8a007e2..54c3f314 100644
--- a/dist/extensions/ext-eyedropper.js
+++ b/dist/extensions/ext-eyedropper.js
@@ -37,8 +37,6 @@ var svgEditorExtension_eyedropper = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-eyedropper.js
    *
@@ -94,8 +92,7 @@ var svgEditorExtension_eyedropper = (function () {
               case 3:
                 strings = _context.sent;
                 svgEditor = this;
-                $ = jQuery;
-                ChangeElementCommand = S.ChangeElementCommand, svgCanvas = svgEditor.canvas, addToHistory = function addToHistory(cmd) {
+                $ = S.$, ChangeElementCommand = S.ChangeElementCommand, svgCanvas = svgEditor.canvas, addToHistory = function addToHistory(cmd) {
                   svgCanvas.undoMgr.addCommandToHistory(cmd);
                 }, currentStyle = {
                   fillPaint: 'red',
@@ -108,6 +105,12 @@ var svgEditorExtension_eyedropper = (function () {
                   strokeLinecap: 'butt',
                   strokeLinejoin: 'miter'
                 };
+                /**
+                 *
+                 * @param {module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementChanged} opts
+                 * @returns {undefined}
+                 */
+
                 buttons = [{
                   id: 'tool_eyedropper',
                   icon: svgEditor.curConfig.extIconsPath + 'eyedropper.png',
@@ -184,7 +187,7 @@ var svgEditorExtension_eyedropper = (function () {
                   }
                 });
 
-              case 9:
+              case 8:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-foreignobject.js b/dist/extensions/ext-foreignobject.js
index 81db9f8c..702acb74 100644
--- a/dist/extensions/ext-foreignobject.js
+++ b/dist/extensions/ext-foreignobject.js
@@ -37,8 +37,6 @@ var svgEditorExtension_foreignobject = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-foreignobject.js
    *
@@ -52,18 +50,18 @@ var svgEditorExtension_foreignobject = (function () {
     init: function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee(S) {
-        var svgEditor, text2xml, NS, importLocale, $, svgCanvas, svgdoc, strings, properlySourceSizeTextArea, showPanel, toggleSourceButtons, selElems, started, newFO, editingforeign, setForeignString, showForeignEditor, setAttr, buttons, contextTools;
-        return regeneratorRuntime.wrap(function _callee$(_context) {
+      regeneratorRuntime.mark(function _callee2(S) {
+        var svgEditor, $, text2xml, NS, importLocale, svgCanvas, svgdoc, strings, properlySourceSizeTextArea, showPanel, toggleSourceButtons, selElems, started, newFO, editingforeign, setForeignString, showForeignEditor, setAttr, buttons, contextTools;
+        return regeneratorRuntime.wrap(function _callee2$(_context2) {
           while (1) {
-            switch (_context.prev = _context.next) {
+            switch (_context2.prev = _context2.next) {
               case 0:
-                setAttr = function _ref5(attr, val) {
+                setAttr = function _ref6(attr, val) {
                   svgCanvas.changeSelectedAttribute(attr, val);
                   svgCanvas.call('changed', selElems);
                 };
 
-                showForeignEditor = function _ref4() {
+                showForeignEditor = function _ref5() {
                   var elt = selElems[0];
 
                   if (!elt || editingforeign) {
@@ -80,8 +78,8 @@ var svgEditorExtension_foreignobject = (function () {
                   $('#svg_source_textarea').focus();
                 };
 
-                setForeignString = function _ref3(xmlString) {
-                  var elt = selElems[0];
+                setForeignString = function _ref4(xmlString) {
+                  var elt = selElems[0]; // The parent `Element` to append to
 
                   try {
                     // convert string into XML document
@@ -92,19 +90,21 @@ var svgEditorExtension_foreignobject = (function () {
                     svgCanvas.call('changed', [elt]);
                     svgCanvas.clearSelection();
                   } catch (e) {
-                    console.log(e);
+                    // Todo: Surface error to user
+                    console.log(e); // eslint-disable-line no-console
+
                     return false;
                   }
 
                   return true;
                 };
 
-                toggleSourceButtons = function _ref2(on) {
+                toggleSourceButtons = function _ref3(on) {
                   $('#tool_source_save, #tool_source_cancel').toggle(!on);
                   $('#foreign_save, #foreign_cancel').toggle(on);
                 };
 
-                showPanel = function _ref(on) {
+                showPanel = function _ref2(on) {
                   var fcRules = $('#fc_rules');
 
                   if (!fcRules.length) {
@@ -116,27 +116,30 @@ var svgEditorExtension_foreignobject = (function () {
                 };
 
                 svgEditor = this;
-                text2xml = S.text2xml, NS = S.NS, importLocale = S.importLocale;
-                $ = jQuery;
+                $ = S.$, text2xml = S.text2xml, NS = S.NS, importLocale = S.importLocale;
                 svgCanvas = svgEditor.canvas;
                 svgdoc = S.svgroot.parentNode.ownerDocument;
-                _context.next = 12;
+                _context2.next = 11;
                 return importLocale();
 
-              case 12:
-                strings = _context.sent;
+              case 11:
+                strings = _context2.sent;
 
                 properlySourceSizeTextArea = function properlySourceSizeTextArea() {
                   // TODO: remove magic numbers here and get values from CSS
                   var height = $('#svg_source_container').height() - 80;
                   $('#svg_source_textarea').css('height', height);
                 };
+                /**
+                * @param {boolean} on
+                * @returns {undefined}
+                */
+
 
                 editingforeign = false;
                 /**
                 * This function sets the content of element elt to the input XML.
                 * @param {string} xmlString - The XML text
-                * @param {Element} elt - the parent element to append to
                 * @returns {boolean} This function returns false if the set was unsuccessful, true otherwise.
                 */
 
@@ -191,7 +194,7 @@ var svgEditorExtension_foreignobject = (function () {
                     }
                   }
                 }];
-                return _context.abrupt("return", {
+                return _context2.abrupt("return", {
                   name: strings.name,
                   svgicons: svgEditor.curConfig.extIconsPath + 'foreignobject-icons.xml',
                   buttons: strings.buttons.map(function (button, i) {
@@ -215,24 +218,57 @@ var svgEditorExtension_foreignobject = (function () {
                       // Create source save/cancel buttons
 
                       /* const save = */
-                      $('#tool_source_save').clone().hide().attr('id', 'foreign_save').unbind().appendTo('#tool_source_back').click(function () {
-                        if (!editingforeign) {
-                          return;
-                        }
+                      $('#tool_source_save').clone().hide().attr('id', 'foreign_save').unbind().appendTo('#tool_source_back').click(
+                      /*#__PURE__*/
+                      _asyncToGenerator(
+                      /*#__PURE__*/
+                      regeneratorRuntime.mark(function _callee() {
+                        var ok;
+                        return regeneratorRuntime.wrap(function _callee$(_context) {
+                          while (1) {
+                            switch (_context.prev = _context.next) {
+                              case 0:
+                                if (editingforeign) {
+                                  _context.next = 2;
+                                  break;
+                                }
 
-                        if (!setForeignString($('#svg_source_textarea').val())) {
-                          $.confirm('Errors found. Revert to original?', function (ok) {
-                            if (!ok) {
-                              return false;
+                                return _context.abrupt("return");
+
+                              case 2:
+                                if (setForeignString($('#svg_source_textarea').val())) {
+                                  _context.next = 11;
+                                  break;
+                                }
+
+                                _context.next = 5;
+                                return $.confirm('Errors found. Revert to original?');
+
+                              case 5:
+                                ok = _context.sent;
+
+                                if (ok) {
+                                  _context.next = 8;
+                                  break;
+                                }
+
+                                return _context.abrupt("return");
+
+                              case 8:
+                                endChanges();
+                                _context.next = 12;
+                                break;
+
+                              case 11:
+                                endChanges();
+
+                              case 12:
+                              case "end":
+                                return _context.stop();
                             }
-
-                            endChanges();
-                          });
-                        } else {
-                          endChanges();
-                        } // setSelectMode();
-
-                      });
+                          }
+                        }, _callee, this);
+                      })));
                       /* const cancel = */
 
                       $('#tool_source_cancel').clone().hide().attr('id', 'foreign_cancel').unbind().appendTo('#tool_source_back').click(function () {
@@ -242,49 +278,53 @@ var svgEditorExtension_foreignobject = (function () {
                   },
                   mouseDown: function mouseDown(opts) {
                     // const e = opts.event;
-                    if (svgCanvas.getMode() === 'foreign') {
-                      started = true;
-                      newFO = svgCanvas.addSVGElementFromJson({
-                        element: 'foreignObject',
-                        attr: {
-                          x: opts.start_x,
-                          y: opts.start_y,
-                          id: svgCanvas.getNextId(),
-                          'font-size': 16,
-                          // cur_text.font_size,
-                          width: '48',
-                          height: '20',
-                          style: 'pointer-events:inherit'
-                        }
-                      });
-                      var m = svgdoc.createElementNS(NS.MATH, 'math');
-                      m.setAttributeNS(NS.XMLNS, 'xmlns', NS.MATH);
-                      m.setAttribute('display', 'inline');
-                      var mi = svgdoc.createElementNS(NS.MATH, 'mi');
-                      mi.setAttribute('mathvariant', 'normal');
-                      mi.textContent = "\u03A6";
-                      var mo = svgdoc.createElementNS(NS.MATH, 'mo');
-                      mo.textContent = "\u222A";
-                      var mi2 = svgdoc.createElementNS(NS.MATH, 'mi');
-                      mi2.textContent = "\u2133";
-                      m.append(mi, mo, mi2);
-                      newFO.append(m);
-                      return {
-                        started: true
-                      };
+                    if (svgCanvas.getMode() !== 'foreign') {
+                      return undefined;
                     }
+
+                    started = true;
+                    newFO = svgCanvas.addSVGElementFromJson({
+                      element: 'foreignObject',
+                      attr: {
+                        x: opts.start_x,
+                        y: opts.start_y,
+                        id: svgCanvas.getNextId(),
+                        'font-size': 16,
+                        // cur_text.font_size,
+                        width: '48',
+                        height: '20',
+                        style: 'pointer-events:inherit'
+                      }
+                    });
+                    var m = svgdoc.createElementNS(NS.MATH, 'math');
+                    m.setAttributeNS(NS.XMLNS, 'xmlns', NS.MATH);
+                    m.setAttribute('display', 'inline');
+                    var mi = svgdoc.createElementNS(NS.MATH, 'mi');
+                    mi.setAttribute('mathvariant', 'normal');
+                    mi.textContent = "\u03A6";
+                    var mo = svgdoc.createElementNS(NS.MATH, 'mo');
+                    mo.textContent = "\u222A";
+                    var mi2 = svgdoc.createElementNS(NS.MATH, 'mi');
+                    mi2.textContent = "\u2133";
+                    m.append(mi, mo, mi2);
+                    newFO.append(m);
+                    return {
+                      started: true
+                    };
                   },
                   mouseUp: function mouseUp(opts) {
                     // const e = opts.event;
-                    if (svgCanvas.getMode() === 'foreign' && started) {
-                      var attrs = $(newFO).attr(['width', 'height']);
-                      var keep = attrs.width !== '0' || attrs.height !== '0';
-                      svgCanvas.addToSelection([newFO], true);
-                      return {
-                        keep: keep,
-                        element: newFO
-                      };
+                    if (svgCanvas.getMode() !== 'foreign' || !started) {
+                      return undefined;
                     }
+
+                    var attrs = $(newFO).attr(['width', 'height']);
+                    var keep = attrs.width !== '0' || attrs.height !== '0';
+                    svgCanvas.addToSelection([newFO], true);
+                    return {
+                      keep: keep,
+                      element: newFO
+                    };
                   },
                   selectedChanged: function selectedChanged(opts) {
                     // Use this to update the current selected elements
@@ -311,12 +351,12 @@ var svgEditorExtension_foreignobject = (function () {
                   elementChanged: function elementChanged(opts) {}
                 });
 
-              case 18:
+              case 17:
               case "end":
-                return _context.stop();
+                return _context2.stop();
             }
           }
-        }, _callee, this);
+        }, _callee2, this);
       }));
 
       return function init(_x) {
diff --git a/dist/extensions/ext-grid.js b/dist/extensions/ext-grid.js
index 9eb33479..35d3568c 100644
--- a/dist/extensions/ext-grid.js
+++ b/dist/extensions/ext-grid.js
@@ -37,8 +37,6 @@ var svgEditorExtension_grid = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-grid.js
    *
@@ -53,7 +51,7 @@ var svgEditorExtension_grid = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(_ref) {
-        var NS, getTypeMap, importLocale, strings, svgEditor, $, svgCanvas, svgdoc, assignAttributes, hcanvas, canvBG, units, intervals, showGrid, canvasGrid, gridPattern, gridimg, gridBox, updateGrid, gridUpdate, buttons;
+        var $, NS, getTypeMap, importLocale, strings, svgEditor, svgCanvas, svgdoc, assignAttributes, hcanvas, canvBG, units, intervals, showGrid, canvasGrid, gridPattern, gridimg, gridBox, updateGrid, gridUpdate, buttons;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
@@ -121,14 +119,13 @@ var svgEditorExtension_grid = (function () {
                   svgCanvas.setHref(gridimg, datauri);
                 };
 
-                NS = _ref.NS, getTypeMap = _ref.getTypeMap, importLocale = _ref.importLocale;
+                $ = _ref.$, NS = _ref.NS, getTypeMap = _ref.getTypeMap, importLocale = _ref.importLocale;
                 _context.next = 5;
                 return importLocale();
 
               case 5:
                 strings = _context.sent;
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas;
                 svgdoc = document.getElementById('svgcanvas').ownerDocument, assignAttributes = svgCanvas.assignAttributes, hcanvas = document.createElement('canvas'), canvBG = $('#canvasBackground'), units = getTypeMap(), intervals = [0.01, 0.1, 1, 10, 100, 1000];
                 showGrid = svgEditor.curConfig.showGrid || false;
@@ -178,6 +175,12 @@ var svgEditorExtension_grid = (function () {
                   style: 'pointer-events: none; display:visible;'
                 });
                 $('#canvasGrid').append(gridBox);
+                /**
+                 *
+                 * @param {Float} zoom
+                 * @returns {undefined}
+                 */
+
                 buttons = [{
                   id: 'view_grid',
                   icon: svgEditor.curConfig.extIconsPath + 'grid.png',
@@ -208,7 +211,7 @@ var svgEditorExtension_grid = (function () {
                   })
                 });
 
-              case 26:
+              case 25:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-helloworld.js b/dist/extensions/ext-helloworld.js
index 9f3257dd..72146cc7 100644
--- a/dist/extensions/ext-helloworld.js
+++ b/dist/extensions/ext-helloworld.js
@@ -75,8 +75,6 @@ var svgEditorExtension_helloworld = (function () {
     throw new TypeError("Invalid attempt to destructure non-iterable instance");
   }
 
-  /* globals jQuery */
-
   /**
    * ext-helloworld.js
    *
@@ -97,19 +95,18 @@ var svgEditorExtension_helloworld = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(_ref) {
-        var importLocale, strings, svgEditor, $, svgCanvas;
+        var $, importLocale, strings, svgEditor, svgCanvas;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
               case 0:
-                importLocale = _ref.importLocale;
+                $ = _ref.$, importLocale = _ref.importLocale;
                 _context.next = 3;
                 return importLocale();
 
               case 3:
                 strings = _context.sent;
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas;
                 return _context.abrupt("return", {
                   name: strings.name,
@@ -148,6 +145,8 @@ var svgEditorExtension_helloworld = (function () {
                         started: true
                       };
                     }
+
+                    return undefined;
                   },
                   // This is triggered from anywhere, but "started" must have been set
                   // to true (see above). Note that "opts" is an object with event info
@@ -173,7 +172,7 @@ var svgEditorExtension_helloworld = (function () {
                   }
                 });
 
-              case 8:
+              case 7:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-imagelib.js b/dist/extensions/ext-imagelib.js
index 7ce2c824..b3ac4657 100644
--- a/dist/extensions/ext-imagelib.js
+++ b/dist/extensions/ext-imagelib.js
@@ -51,8 +51,6 @@ var svgEditorExtension_imagelib = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-imagelib.js
    *
@@ -66,13 +64,13 @@ var svgEditorExtension_imagelib = (function () {
     init: function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee(_ref) {
-        var decode64, importLocale, dropXMLInternalSubset, imagelibStrings, modularVersion, svgEditor, $, uiStrings, svgCanvas, extIconsPath, allowedImageLibOrigins, closeBrowser, importImage, pending, mode, multiArr, transferStopped, preview, submit, toggleMulti, showBrowser, buttons;
-        return regeneratorRuntime.wrap(function _callee$(_context) {
+      regeneratorRuntime.mark(function _callee2(_ref) {
+        var $, decode64, importLocale, dropXMLInternalSubset, imagelibStrings, modularVersion, svgEditor, uiStrings, svgCanvas, extIconsPath, allowedImageLibOrigins, closeBrowser, importImage, pending, mode, multiArr, transferStopped, preview, submit, toggleMulti, showBrowser, buttons;
+        return regeneratorRuntime.wrap(function _callee2$(_context2) {
           while (1) {
-            switch (_context.prev = _context.next) {
+            switch (_context2.prev = _context2.next) {
               case 0:
-                showBrowser = function _ref9() {
+                showBrowser = function _ref10() {
                   var browser = $('#imgbrowse');
 
                   if (!browser.length) {
@@ -128,10 +126,10 @@ var svgEditorExtension_imagelib = (function () {
                     });
                     cancel.prepend($.getSvgIcon('cancel', true));
                     back.prepend($.getSvgIcon('tool_imagelib', true));
-                    imagelibStrings.imgLibs.forEach(function (_ref5) {
-                      var name = _ref5.name,
-                          url = _ref5.url,
-                          description = _ref5.description;
+                    imagelibStrings.imgLibs.forEach(function (_ref6) {
+                      var name = _ref6.name,
+                          url = _ref6.url,
+                          description = _ref6.description;
                       $('<li>').appendTo(libOpts).text(name).on('click touchend', function () {
                         frame.attr('src', url).show();
                         header.text(name);
@@ -144,7 +142,7 @@ var svgEditorExtension_imagelib = (function () {
                   }
                 };
 
-                toggleMulti = function _ref8(show) {
+                toggleMulti = function _ref9(show) {
                   $('#lib_framewrap, #imglib_opts').css({
                     right: show ? 200 : 10
                   });
@@ -186,7 +184,7 @@ var svgEditorExtension_imagelib = (function () {
                   submit.toggle(show);
                 };
 
-                importImage = function _ref7(url) {
+                importImage = function _ref8(url) {
                   var newImage = svgCanvas.addSVGElementFromJson({
                     element: 'image',
                     attr: {
@@ -203,19 +201,18 @@ var svgEditorExtension_imagelib = (function () {
                   svgCanvas.setImageURL(url);
                 };
 
-                closeBrowser = function _ref6() {
+                closeBrowser = function _ref7() {
                   $('#imgbrowse_holder').hide();
                 };
 
-                decode64 = _ref.decode64, importLocale = _ref.importLocale, dropXMLInternalSubset = _ref.dropXMLInternalSubset;
-                _context.next = 7;
+                $ = _ref.$, decode64 = _ref.decode64, importLocale = _ref.importLocale, dropXMLInternalSubset = _ref.dropXMLInternalSubset;
+                _context2.next = 7;
                 return importLocale();
 
               case 7:
-                imagelibStrings = _context.sent;
+                imagelibStrings = _context2.sent;
                 modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
                 svgEditor = this;
-                $ = jQuery;
                 uiStrings = svgEditor.uiStrings, svgCanvas = svgEditor.canvas, extIconsPath = svgEditor.curConfig.extIconsPath;
                 imagelibStrings.imgLibs = imagelibStrings.imgLibs.map(function (_ref2) {
                   var name = _ref2.name,
@@ -238,233 +235,316 @@ var svgEditorExtension_imagelib = (function () {
                     return location.origin;
                   }
                 });
+                /**
+                *
+                * @returns {undefined}
+                */
+
                 pending = {};
                 mode = 's';
                 multiArr = [];
                 transferStopped = false;
                 // Receive `postMessage` data
-                window.addEventListener('message', function (_ref4) {
-                  var origin = _ref4.origin,
-                      response = _ref4.data;
+                window.addEventListener('message',
+                /*#__PURE__*/
+                function () {
+                  var _ref5 = _asyncToGenerator(
+                  /*#__PURE__*/
+                  regeneratorRuntime.mark(function _callee(_ref4) {
+                    var origin, response, id, type, hasName, hasHref, char1, secondpos, entry, curMeta, svgStr, imgStr, name, message, pre, src, title, xml, ok;
+                    return regeneratorRuntime.wrap(function _callee$(_context) {
+                      while (1) {
+                        switch (_context.prev = _context.next) {
+                          case 0:
+                            origin = _ref4.origin, response = _ref4.data;
 
-                  if (!response || !['string', 'object'].includes(_typeof(response))) {
-                    // Do nothing
-                    return;
-                  }
+                            if (!(!response || !['string', 'object'].includes(_typeof(response)))) {
+                              _context.next = 3;
+                              break;
+                            }
 
-                  var id;
-                  var type;
+                            return _context.abrupt("return");
 
-                  try {
-                    // Todo: This block can be removed (and the above check changed to
-                    //   insist on an object) if embedAPI moves away from a string to
-                    //   an object (if IE9 support not needed)
-                    response = _typeof(response) === 'object' ? response : JSON.parse(response);
+                          case 3:
+                            _context.prev = 3;
+                            // Todo: This block can be removed (and the above check changed to
+                            //   insist on an object) if embedAPI moves away from a string to
+                            //   an object (if IE9 support not needed)
+                            response = _typeof(response) === 'object' ? response : JSON.parse(response);
 
-                    if (response.namespace !== 'imagelib') {
-                      return;
-                    }
+                            if (!(response.namespace !== 'imagelib')) {
+                              _context.next = 7;
+                              break;
+                            }
 
-                    if (!allowedImageLibOrigins.includes('*') && !allowedImageLibOrigins.includes(origin)) {
-                      console.log("Origin ".concat(origin, " not whitelisted for posting to ").concat(window.origin));
-                      return;
-                    }
+                            return _context.abrupt("return");
 
-                    var hasName = 'name' in response;
-                    var hasHref = 'href' in response;
+                          case 7:
+                            if (!(!allowedImageLibOrigins.includes('*') && !allowedImageLibOrigins.includes(origin))) {
+                              _context.next = 10;
+                              break;
+                            }
 
-                    if (!hasName && transferStopped) {
-                      transferStopped = false;
-                      return;
-                    }
+                            // Todo: Surface this error to user?
+                            console.log("Origin ".concat(origin, " not whitelisted for posting to ").concat(window.origin)); // eslint-disable-line no-console
 
-                    if (hasHref) {
-                      id = response.href;
-                      response = response.data;
-                    } // Hide possible transfer dialog box
+                            return _context.abrupt("return");
+
+                          case 10:
+                            hasName = 'name' in response;
+                            hasHref = 'href' in response;
+
+                            if (!(!hasName && transferStopped)) {
+                              _context.next = 15;
+                              break;
+                            }
+
+                            transferStopped = false;
+                            return _context.abrupt("return");
+
+                          case 15:
+                            if (hasHref) {
+                              id = response.href;
+                              response = response.data;
+                            } // Hide possible transfer dialog box
 
 
-                    $('#dialog_box').hide();
-                    type = hasName ? 'meta' : response.charAt(0);
-                  } catch (e) {
-                    // This block is for backward compatibility (for IAN and Openclipart);
-                    //   should otherwise return
-                    if (typeof response === 'string') {
-                      var char1 = response.charAt(0);
+                            $('#dialog_box').hide();
+                            type = hasName ? 'meta' : response.charAt(0);
+                            _context.next = 28;
+                            break;
 
-                      if (char1 !== '{' && transferStopped) {
-                        transferStopped = false;
-                        return;
-                      }
+                          case 20:
+                            _context.prev = 20;
+                            _context.t0 = _context["catch"](3);
 
-                      if (char1 === '|') {
-                        var secondpos = response.indexOf('|', 1);
-                        id = response.substr(1, secondpos - 1);
-                        response = response.substr(secondpos + 1);
-                        type = response.charAt(0);
-                      }
-                    }
-                  }
+                            if (!(typeof response === 'string')) {
+                              _context.next = 28;
+                              break;
+                            }
 
-                  var entry, curMeta, svgStr, imgStr;
+                            char1 = response.charAt(0);
 
-                  switch (type) {
-                    case 'meta':
-                      {
-                        // Metadata
-                        transferStopped = false;
-                        curMeta = response; // Should be safe to add dynamic property as passed metadata
+                            if (!(char1 !== '{' && transferStopped)) {
+                              _context.next = 27;
+                              break;
+                            }
 
-                        pending[curMeta.id] = curMeta; // lgtm [js/remote-property-injection]
+                            transferStopped = false;
+                            return _context.abrupt("return");
 
-                        var name = curMeta.name || 'file';
-                        var message = uiStrings.notification.retrieving.replace('%s', name);
+                          case 27:
+                            if (char1 === '|') {
+                              secondpos = response.indexOf('|', 1);
+                              id = response.substr(1, secondpos - 1);
+                              response = response.substr(secondpos + 1);
+                              type = response.charAt(0);
+                            }
 
-                        if (mode !== 'm') {
-                          $.process_cancel(message, function () {
+                          case 28:
+                            _context.t1 = type;
+                            _context.next = _context.t1 === 'meta' ? 31 : _context.t1 === '<' ? 47 : _context.t1 === 'd' ? 49 : 60;
+                            break;
+
+                          case 31:
+                            // Metadata
+                            transferStopped = false;
+                            curMeta = response; // Should be safe to add dynamic property as passed metadata
+
+                            pending[curMeta.id] = curMeta; // lgtm [js/remote-property-injection]
+
+                            name = curMeta.name || 'file';
+                            message = uiStrings.notification.retrieving.replace('%s', name);
+
+                            if (!(mode !== 'm')) {
+                              _context.next = 43;
+                              break;
+                            }
+
+                            _context.next = 39;
+                            return $.process_cancel(message);
+
+                          case 39:
                             transferStopped = true; // Should a message be sent back to the frame?
 
                             $('#dialog_box').hide();
-                          });
-                        } else {
-                          entry = $('<div>').text(message).data('id', curMeta.id);
-                          preview.append(entry);
-                          curMeta.entry = entry;
-                        }
+                            _context.next = 46;
+                            break;
 
-                        return;
-                      }
+                          case 43:
+                            entry = $('<div>').text(message).data('id', curMeta.id);
+                            preview.append(entry);
+                            curMeta.entry = entry;
 
-                    case '<':
-                      svgStr = true;
-                      break;
+                          case 46:
+                            return _context.abrupt("return");
 
-                    case 'd':
-                      {
-                        if (response.startsWith('data:image/svg+xml')) {
-                          var pre = 'data:image/svg+xml;base64,';
-                          var src = response.substring(pre.length);
-                          response = decode64(src);
-                          svgStr = true;
-                          break;
-                        } else if (response.startsWith('data:image/')) {
-                          imgStr = true;
-                          break;
-                        }
-                      }
-                    // Else fall through
+                          case 47:
+                            svgStr = true;
+                            return _context.abrupt("break", 62);
 
-                    default:
-                      // TODO: See if there's a way to base64 encode the binary data stream
-                      // const str = 'data:;base64,' + svgedit.utilities.encode64(response, true);
-                      // Assume it's raw image data
-                      // importImage(str);
-                      // Don't give warning as postMessage may have been used by something else
-                      if (mode !== 'm') {
-                        closeBrowser();
-                      } else {
-                        pending[id].entry.remove();
-                      } // $.alert('Unexpected data was returned: ' + response, function() {
-                      //   if (mode !== 'm') {
-                      //     closeBrowser();
-                      //   } else {
-                      //     pending[id].entry.remove();
-                      //   }
-                      // });
+                          case 49:
+                            if (!response.startsWith('data:image/svg+xml')) {
+                              _context.next = 57;
+                              break;
+                            }
+
+                            pre = 'data:image/svg+xml;base64,';
+                            src = response.substring(pre.length);
+                            response = decode64(src);
+                            svgStr = true;
+                            return _context.abrupt("break", 62);
+
+                          case 57:
+                            if (!response.startsWith('data:image/')) {
+                              _context.next = 60;
+                              break;
+                            }
+
+                            imgStr = true;
+                            return _context.abrupt("break", 62);
+
+                          case 60:
+                            // TODO: See if there's a way to base64 encode the binary data stream
+                            // const str = 'data:;base64,' + svgedit.utilities.encode64(response, true);
+                            // Assume it's raw image data
+                            // importImage(str);
+                            // Don't give warning as postMessage may have been used by something else
+                            if (mode !== 'm') {
+                              closeBrowser();
+                            } else {
+                              pending[id].entry.remove();
+                            } // await $.alert('Unexpected data was returned: ' + response, function() {
+                            //   if (mode !== 'm') {
+                            //     closeBrowser();
+                            //   } else {
+                            //     pending[id].entry.remove();
+                            //   }
+                            // });
 
 
-                      return;
-                  }
+                            return _context.abrupt("return");
 
-                  switch (mode) {
-                    case 's':
-                      // Import one
-                      if (svgStr) {
-                        svgCanvas.importSvgString(response);
-                      } else if (imgStr) {
-                        importImage(response);
-                      }
+                          case 62:
+                            _context.t2 = mode;
+                            _context.next = _context.t2 === 's' ? 65 : _context.t2 === 'm' ? 68 : _context.t2 === 'o' ? 72 : 83;
+                            break;
 
-                      closeBrowser();
-                      break;
+                          case 65:
+                            // Import one
+                            if (svgStr) {
+                              svgCanvas.importSvgString(response);
+                            } else if (imgStr) {
+                              importImage(response);
+                            }
 
-                    case 'm':
-                      // Import multiple
-                      multiArr.push([svgStr ? 'svg' : 'img', response]);
-                      curMeta = pending[id];
-                      var title;
+                            closeBrowser();
+                            return _context.abrupt("break", 83);
 
-                      if (svgStr) {
-                        if (curMeta && curMeta.name) {
-                          title = curMeta.name;
-                        } else {
-                          // Try to find a title
-                          // `dropXMLInternalSubset` is to help prevent the billion laughs attack
-                          var xml = new DOMParser().parseFromString(dropXMLInternalSubset(response), 'text/xml').documentElement; // lgtm [js/xml-bomb]
+                          case 68:
+                            // Import multiple
+                            multiArr.push([svgStr ? 'svg' : 'img', response]);
+                            curMeta = pending[id];
 
-                          title = $(xml).children('title').first().text() || '(SVG #' + response.length + ')';
-                        }
-
-                        if (curMeta) {
-                          preview.children().each(function () {
-                            if ($(this).data('id') === id) {
-                              if (curMeta.preview_url) {
-                                $(this).html($('<span>').append($('<img>').attr('src', curMeta.preview_url), document.createTextNode(title)));
+                            if (svgStr) {
+                              if (curMeta && curMeta.name) {
+                                title = curMeta.name;
                               } else {
-                                $(this).text(title);
+                                // Try to find a title
+                                // `dropXMLInternalSubset` is to help prevent the billion laughs attack
+                                xml = new DOMParser().parseFromString(dropXMLInternalSubset(response), 'text/xml').documentElement; // lgtm [js/xml-bomb]
+
+                                title = $(xml).children('title').first().text() || '(SVG #' + response.length + ')';
                               }
 
-                              submit.removeAttr('disabled');
-                            }
-                          });
-                        } else {
-                          preview.append($('<div>').text(title));
-                          submit.removeAttr('disabled');
-                        }
-                      } else {
-                        if (curMeta && curMeta.preview_url) {
-                          title = curMeta.name || '';
-                        }
+                              if (curMeta) {
+                                preview.children().each(function () {
+                                  if ($(this).data('id') === id) {
+                                    if (curMeta.preview_url) {
+                                      $(this).html($('<span>').append($('<img>').attr('src', curMeta.preview_url), document.createTextNode(title)));
+                                    } else {
+                                      $(this).text(title);
+                                    }
 
-                        if (curMeta && curMeta.preview_url) {
-                          entry = $('<span>').append($('<img>').attr('src', curMeta.preview_url), document.createTextNode(title));
-                        } else {
-                          entry = $('<img>').attr('src', response);
-                        }
+                                    submit.removeAttr('disabled');
+                                  }
+                                });
+                              } else {
+                                preview.append($('<div>').text(title));
+                                submit.removeAttr('disabled');
+                              }
+                            } else {
+                              if (curMeta && curMeta.preview_url) {
+                                title = curMeta.name || '';
+                              }
 
-                        if (curMeta) {
-                          preview.children().each(function () {
-                            if ($(this).data('id') === id) {
-                              $(this).html(entry);
-                              submit.removeAttr('disabled');
+                              if (curMeta && curMeta.preview_url) {
+                                entry = $('<span>').append($('<img>').attr('src', curMeta.preview_url), document.createTextNode(title));
+                              } else {
+                                entry = $('<img>').attr('src', response);
+                              }
+
+                              if (curMeta) {
+                                preview.children().each(function () {
+                                  if ($(this).data('id') === id) {
+                                    $(this).html(entry);
+                                    submit.removeAttr('disabled');
+                                  }
+                                });
+                              } else {
+                                preview.append($('<div>').append(entry));
+                                submit.removeAttr('disabled');
+                              }
                             }
-                          });
-                        } else {
-                          preview.append($('<div>').append(entry));
-                          submit.removeAttr('disabled');
+
+                            return _context.abrupt("break", 83);
+
+                          case 72:
+                            if (svgStr) {
+                              _context.next = 74;
+                              break;
+                            }
+
+                            return _context.abrupt("break", 83);
+
+                          case 74:
+                            closeBrowser();
+                            _context.next = 77;
+                            return svgEditor.openPrep();
+
+                          case 77:
+                            ok = _context.sent;
+
+                            if (ok) {
+                              _context.next = 80;
+                              break;
+                            }
+
+                            return _context.abrupt("return");
+
+                          case 80:
+                            svgCanvas.clear();
+                            svgCanvas.setSvgString(response); // updateCanvas();
+
+                            return _context.abrupt("break", 83);
+
+                          case 83:
+                          case "end":
+                            return _context.stop();
                         }
                       }
+                    }, _callee, this, [[3, 20]]);
+                  }));
 
-                      break;
+                  return function (_x2) {
+                    return _ref5.apply(this, arguments);
+                  };
+                }(), true);
+                /**
+                * @param {boolean} show
+                * @returns {undefined}
+                */
 
-                    case 'o':
-                      // Open
-                      if (!svgStr) {
-                        break;
-                      }
-
-                      svgEditor.openPrep(function (ok) {
-                        if (!ok) {
-                          return;
-                        }
-
-                        svgCanvas.clear();
-                        svgCanvas.setSvgString(response); // updateCanvas();
-                      });
-                      closeBrowser();
-                      break;
-                  }
-                }, true);
                 buttons = [{
                   id: 'tool_imagelib',
                   type: 'app_menu',
@@ -475,7 +555,7 @@ var svgEditorExtension_imagelib = (function () {
                     mouseup: showBrowser
                   }
                 }];
-                return _context.abrupt("return", {
+                return _context2.abrupt("return", {
                   svgicons: extIconsPath + 'ext-imagelib.xml',
                   buttons: imagelibStrings.buttons.map(function (button, i) {
                     return Object.assign(buttons[i], button);
@@ -485,12 +565,12 @@ var svgEditorExtension_imagelib = (function () {
                   }
                 });
 
-              case 21:
+              case 20:
               case "end":
-                return _context.stop();
+                return _context2.stop();
             }
           }
-        }, _callee, this);
+        }, _callee2, this);
       }));
 
       return function init(_x) {
diff --git a/dist/extensions/ext-markers.js b/dist/extensions/ext-markers.js
index e4651bd3..50537c7a 100644
--- a/dist/extensions/ext-markers.js
+++ b/dist/extensions/ext-markers.js
@@ -37,8 +37,6 @@ var svgEditorExtension_markers = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-markers.js
    *
@@ -74,13 +72,14 @@ var svgEditorExtension_markers = (function () {
     init: function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee2(S) {
-        var strings, svgEditor, $, svgCanvas, addElem, mtypes, markerPrefix, idPrefix, markerTypes, getLinked, setIcon, selElems, showPanel, addMarker, convertline, setMarker, colorChanged, updateReferences, triggerTextEntry, showTextPrompt, setArrowFromButton, getTitle, buildButtonList, contextTools;
-        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+      regeneratorRuntime.mark(function _callee3(S) {
+        var strings, svgEditor, $, svgCanvas, addElem, mtypes, markerPrefix, idPrefix, markerTypes, getLinked, setIcon, selElems, showPanel, addMarker, convertline, setMarker, colorChanged, updateReferences, triggerTextEntry, showTextPrompt, _showTextPrompt, setArrowFromButton, _setArrowFromButton, getTitle, buildButtonList, contextTools;
+
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
           while (1) {
-            switch (_context2.prev = _context2.next) {
+            switch (_context3.prev = _context3.next) {
               case 0:
-                buildButtonList = function _ref14(lang) {
+                buildButtonList = function _ref16() {
                   var buttons = []; // const i = 0;
 
                   /*
@@ -131,42 +130,95 @@ var svgEditorExtension_markers = (function () {
                   return buttons;
                 };
 
-                getTitle = function _ref13(id) {
+                getTitle = function _ref15(id) {
                   var langList = strings.langList;
-                  var item = langList.find(function (item) {
-                    return item.id === id;
+                  var item = langList.find(function (itm) {
+                    return itm.id === id;
                   });
                   return item ? item.title : id;
                 };
 
-                setArrowFromButton = function _ref12(obj) {
-                  var parts = this.id.split('_');
-                  var pos = parts[1];
-                  var val = parts[2];
+                _setArrowFromButton = function _ref14() {
+                  _setArrowFromButton = _asyncToGenerator(
+                  /*#__PURE__*/
+                  regeneratorRuntime.mark(function _callee2(ev) {
+                    var parts, pos, val;
+                    return regeneratorRuntime.wrap(function _callee2$(_context2) {
+                      while (1) {
+                        switch (_context2.prev = _context2.next) {
+                          case 0:
+                            parts = this.id.split('_');
+                            pos = parts[1];
+                            val = parts[2];
 
-                  if (parts[3]) {
-                    val += '_' + parts[3];
-                  }
+                            if (parts[3]) {
+                              val += '_' + parts[3];
+                            }
 
-                  if (val !== 'textmarker') {
-                    triggerTextEntry(pos, '\\' + val);
-                  } else {
-                    showTextPrompt(pos);
-                  }
+                            if (!(val !== 'textmarker')) {
+                              _context2.next = 8;
+                              break;
+                            }
+
+                            triggerTextEntry(pos, '\\' + val);
+                            _context2.next = 10;
+                            break;
+
+                          case 8:
+                            _context2.next = 10;
+                            return showTextPrompt(pos);
+
+                          case 10:
+                          case "end":
+                            return _context2.stop();
+                        }
+                      }
+                    }, _callee2, this);
+                  }));
+                  return _setArrowFromButton.apply(this, arguments);
                 };
 
-                showTextPrompt = function _ref11(pos) {
-                  var def = $('#' + pos + '_marker').val();
+                setArrowFromButton = function _ref13(_x3) {
+                  return _setArrowFromButton.apply(this, arguments);
+                };
 
-                  if (def.substr(0, 1) === '\\') {
-                    def = '';
-                  }
+                _showTextPrompt = function _ref12() {
+                  _showTextPrompt = _asyncToGenerator(
+                  /*#__PURE__*/
+                  regeneratorRuntime.mark(function _callee(pos) {
+                    var def, txt;
+                    return regeneratorRuntime.wrap(function _callee$(_context) {
+                      while (1) {
+                        switch (_context.prev = _context.next) {
+                          case 0:
+                            def = $('#' + pos + '_marker').val();
 
-                  $.prompt('Enter text for ' + pos + ' marker', def, function (txt) {
-                    if (txt) {
-                      triggerTextEntry(pos, txt);
-                    }
-                  });
+                            if (def.substr(0, 1) === '\\') {
+                              def = '';
+                            }
+
+                            _context.next = 4;
+                            return $.prompt('Enter text for ' + pos + ' marker', def);
+
+                          case 4:
+                            txt = _context.sent;
+
+                            if (txt) {
+                              triggerTextEntry(pos, txt);
+                            }
+
+                          case 6:
+                          case "end":
+                            return _context.stop();
+                        }
+                      }
+                    }, _callee, this);
+                  }));
+                  return _showTextPrompt.apply(this, arguments);
+                };
+
+                showTextPrompt = function _ref11(_x2) {
+                  return _showTextPrompt.apply(this, arguments);
                 };
 
                 triggerTextEntry = function _ref10(pos, val) {
@@ -333,11 +385,11 @@ var svgEditorExtension_markers = (function () {
                   var marker = svgCanvas.getElem(id);
 
                   if (marker) {
-                    return;
+                    return undefined;
                   }
 
                   if (val === '' || val === '\\nomarker') {
-                    return;
+                    return undefined;
                   }
 
                   var el = selElems[0];
@@ -360,7 +412,7 @@ var svgEditorExtension_markers = (function () {
                   }
 
                   if (!markerTypes[seType]) {
-                    return;
+                    return undefined;
                   } // an unknown type!
                   // create a generic marker
 
@@ -492,13 +544,13 @@ var svgEditorExtension_markers = (function () {
                   return svgCanvas.getElem(m[1]);
                 };
 
-                _context2.next = 15;
+                _context3.next = 17;
                 return S.importLocale();
 
-              case 15:
-                strings = _context2.sent;
+              case 17:
+                strings = _context3.sent;
                 svgEditor = this;
-                $ = jQuery;
+                $ = S.$;
                 svgCanvas = svgEditor.canvas;
                 addElem = svgCanvas.addSVGElementFromJson;
                 mtypes = ['start', 'mid', 'end'];
@@ -647,38 +699,21 @@ var svgEditorExtension_markers = (function () {
                     change: setArrowFromButton
                   }
                 }];
-                return _context2.abrupt("return", {
+                return _context3.abrupt("return", {
                   name: strings.name,
                   svgicons: svgEditor.curConfig.extIconsPath + 'markers-icons.xml',
                   callback: function callback() {
                     $('#marker_panel').addClass('toolset').hide();
                   },
-                  addLangData: function () {
-                    var _addLangData = _asyncToGenerator(
-                    /*#__PURE__*/
-                    regeneratorRuntime.mark(function _callee(_ref) {
-                      var importLocale, lang;
-                      return regeneratorRuntime.wrap(function _callee$(_context) {
-                        while (1) {
-                          switch (_context.prev = _context.next) {
-                            case 0:
-                              importLocale = _ref.importLocale, lang = _ref.lang;
-                              return _context.abrupt("return", {
-                                data: strings.langList
-                              });
 
-                            case 2:
-                            case "end":
-                              return _context.stop();
-                          }
-                        }
-                      }, _callee, this);
-                    }));
-
-                    return function addLangData(_x2) {
-                      return _addLangData.apply(this, arguments);
+                  /* async */
+                  addLangData: function addLangData(_ref) {
+                    var importLocale = _ref.importLocale,
+                        lang = _ref.lang;
+                    return {
+                      data: strings.langList
                     };
-                  }(),
+                  },
                   selectedChanged: function selectedChanged(opts) {
                     // Use this to update the current selected elements
                     // console.log('selectChanged',opts);
@@ -716,12 +751,12 @@ var svgEditorExtension_markers = (function () {
                   })
                 });
 
-              case 27:
+              case 29:
               case "end":
-                return _context2.stop();
+                return _context3.stop();
             }
           }
-        }, _callee2, this);
+        }, _callee3, this);
       }));
 
       return function init(_x) {
diff --git a/dist/extensions/ext-mathjax.js b/dist/extensions/ext-mathjax.js
index d0d86ef5..9ad9ae6d 100644
--- a/dist/extensions/ext-mathjax.js
+++ b/dist/extensions/ext-mathjax.js
@@ -37,6 +37,14 @@ var svgEditorExtension_mathjax = (function () {
     };
   }
 
+  /**
+   * Add any of the whitelisted attributes to the script tag.
+   * @param {HTMLScriptElement} script
+   * @param {PlainObject.<string, string>} atts
+   * @returns {undefined}
+   */
+
+
   function addScriptAtts(script, atts) {
     ['id', 'class', 'type'].forEach(function (prop) {
       if (prop in atts) {
@@ -55,6 +63,7 @@ var svgEditorExtension_mathjax = (function () {
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var script = document.createElement('script');
 
       var destructor = function destructor() {
@@ -87,11 +96,11 @@ var svgEditorExtension_mathjax = (function () {
     init: function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee(_ref) {
-        var importLocale, strings, svgEditor, $, svgCanvas, mathjaxSrcSecure, uiStrings, math, locationX, locationY, mathjaxLoaded, saveMath, buttons;
-        return regeneratorRuntime.wrap(function _callee$(_context) {
+      regeneratorRuntime.mark(function _callee2(_ref) {
+        var $, importLocale, strings, svgEditor, svgCanvas, mathjaxSrcSecure, uiStrings, math, locationX, locationY, mathjaxLoaded, saveMath, buttons;
+        return regeneratorRuntime.wrap(function _callee2$(_context2) {
           while (1) {
-            switch (_context.prev = _context.next) {
+            switch (_context2.prev = _context2.next) {
               case 0:
                 saveMath = function _ref2() {
                   var code = $('#mathjax_code_textarea').val(); // displaystyle to force MathJax NOT to use the inline style. Because it is
@@ -145,14 +154,13 @@ var svgEditorExtension_mathjax = (function () {
                   });
                 };
 
-                importLocale = _ref.importLocale;
-                _context.next = 4;
+                $ = _ref.$, importLocale = _ref.importLocale;
+                _context2.next = 4;
                 return importLocale();
 
               case 4:
-                strings = _context.sent;
+                strings = _context2.sent;
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas; // Configuration of the MathJax extention.
                 // This will be added to the head tag before MathJax is loaded.
 
@@ -182,7 +190,8 @@ var svgEditorExtension_mathjax = (function () {
                 // Had been on https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS-MML_SVG.js
                 // Obtained Text-AMS-MML_SVG.js from https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.3/config/TeX-AMS-MML_SVG.js
                 mathjaxSrcSecure = 'mathjax/MathJax.min.js?config=TeX-AMS-MML_SVG.js', uiStrings = svgEditor.uiStrings;
-                mathjaxLoaded = false; // TODO: Implement language support. Move these uiStrings to the locale files and the code to the langReady callback.
+                mathjaxLoaded = false; // TODO: Implement language support. Move these uiStrings to the locale files and
+                //   the code to the langReady callback. Also i18nize alert and HTML below
 
                 $.extend(uiStrings, {
                   mathjax: {
@@ -193,74 +202,110 @@ var svgEditorExtension_mathjax = (function () {
                     title: 'Mathematics code editor'
                   }
                 });
+                /**
+                 *
+                 * @returns {undefined}
+                 */
+
                 buttons = [{
                   id: 'tool_mathjax',
                   type: 'mode',
                   icon: svgEditor.curConfig.extIconsPath + 'mathjax.png',
                   events: {
-                    click: function click() {
-                      // Only load Mathjax when needed, we don't want to strain Svg-Edit any more.
-                      // From this point on it is very probable that it will be needed, so load it.
-                      if (mathjaxLoaded === false) {
-                        $('<div id="mathjax">' + '<!-- Here is where MathJax creates the math -->' + '<div id="mathjax_creator" class="tex2jax_process" style="display:none">' + '$${}$$' + '</div>' + '<div id="mathjax_overlay"></div>' + '<div id="mathjax_container">' + '<div id="tool_mathjax_back" class="toolbar_button">' + '<button id="tool_mathjax_save">OK</button>' + '<button id="tool_mathjax_cancel">Cancel</button>' + '</div>' + '<fieldset>' + '<legend id="mathjax_legend">Mathematics Editor</legend>' + '<label>' + '<span id="mathjax_explication">Please type your mathematics in ' + '<a href="https://en.wikipedia.org/wiki/Help:Displaying_a_formula" target="_blank">TeX</a> code.</span></label>' + '<textarea id="mathjax_code_textarea" spellcheck="false"></textarea>' + '</fieldset>' + '</div>' + '</div>').insertAfter('#svg_prefs').hide(); // Make the MathEditor draggable.
+                    click: function () {
+                      var _click = _asyncToGenerator(
+                      /*#__PURE__*/
+                      regeneratorRuntime.mark(function _callee() {
+                        return regeneratorRuntime.wrap(function _callee$(_context) {
+                          while (1) {
+                            switch (_context.prev = _context.next) {
+                              case 0:
+                                // Set the mode.
+                                svgCanvas.setMode('mathjax'); // Only load Mathjax when needed, we don't want to strain Svg-Edit any more.
+                                // From this point on it is very probable that it will be needed, so load it.
 
-                        $('#mathjax_container').draggable({
-                          cancel: 'button,fieldset',
-                          containment: 'window'
-                        }); // Add functionality and picture to cancel button.
+                                if (!(mathjaxLoaded === false)) {
+                                  _context.next = 17;
+                                  break;
+                                }
 
-                        $('#tool_mathjax_cancel').prepend($.getSvgIcon('cancel', true)).on('click touched', function () {
-                          $('#mathjax').hide();
-                        }); // Add functionality and picture to the save button.
+                                $('<div id="mathjax">' + '<!-- Here is where MathJax creates the math -->' + '<div id="mathjax_creator" class="tex2jax_process" style="display:none">' + '$${}$$' + '</div>' + '<div id="mathjax_overlay"></div>' + '<div id="mathjax_container">' + '<div id="tool_mathjax_back" class="toolbar_button">' + '<button id="tool_mathjax_save">OK</button>' + '<button id="tool_mathjax_cancel">Cancel</button>' + '</div>' + '<fieldset>' + '<legend id="mathjax_legend">Mathematics Editor</legend>' + '<label>' + '<span id="mathjax_explication">Please type your mathematics in ' + '<a href="https://en.wikipedia.org/wiki/Help:Displaying_a_formula" target="_blank">TeX</a> code.</span></label>' + '<textarea id="mathjax_code_textarea" spellcheck="false"></textarea>' + '</fieldset>' + '</div>' + '</div>').insertAfter('#svg_prefs').hide(); // Make the MathEditor draggable.
 
-                        $('#tool_mathjax_save').prepend($.getSvgIcon('ok', true)).on('click touched', function () {
-                          saveMath();
-                          $('#mathjax').hide();
-                        }); // MathJax preprocessing has to ignore most of the page.
+                                $('#mathjax_container').draggable({
+                                  cancel: 'button,fieldset',
+                                  containment: 'window'
+                                }); // Add functionality and picture to cancel button.
 
-                        $('body').addClass('tex2jax_ignore'); // Now get (and run) the MathJax Library.
-                        // Todo: insert script with modules once widely supported
-                        //   and if MathJax (and its `TeX-AMS-MML_SVG.js` dependency) ends up
-                        //   providing an ES6 module export: https://github.com/mathjax/MathJax/issues/1998
+                                $('#tool_mathjax_cancel').prepend($.getSvgIcon('cancel', true)).on('click touched', function () {
+                                  $('#mathjax').hide();
+                                }); // Add functionality and picture to the save button.
 
-                        /*
-                        const modularVersion = !('svgEditor' in window) ||
-                          !window.svgEditor ||
-                          window.svgEditor.modules !== false;
-                        // Add as second argument to `importScript`
-                        {
-                          type: modularVersion
-                            ? 'module' // Make this the default when widely supported
-                            : 'text/javascript'
-                        }
-                        // If only using modules, just use this:
-                        const {default: MathJax} = await importModule( // or `import()` when widely supported
-                          svgEditor.curConfig.extIconsPath + mathjaxSrcSecure
-                        );
-                        */
-                        // We use `extIconsPath` here for now as it does not vary with
-                        //  the modular type as does `extPath`
+                                $('#tool_mathjax_save').prepend($.getSvgIcon('ok', true)).on('click touched', function () {
+                                  saveMath();
+                                  $('#mathjax').hide();
+                                }); // MathJax preprocessing has to ignore most of the page.
 
-                        importScript(svgEditor.curConfig.extIconsPath + mathjaxSrcSecure).then(function () {
-                          // When MathJax is loaded get the div where the math will be rendered.
-                          MathJax.Hub.queue.Push(function () {
-                            math = MathJax.Hub.getAllJax('#mathjax_creator')[0];
-                            console.log(math);
-                            mathjaxLoaded = true;
-                            console.log('MathJax Loaded');
-                          });
-                        }).catch(function () {
-                          console.log('Failed loadeing MathJax.');
-                          $.alert('Failed loading MathJax. You will not be able to change the mathematics.');
-                        });
-                      } // Set the mode.
+                                $('body').addClass('tex2jax_ignore'); // Now get (and run) the MathJax Library.
+                                // Todo: insert script with modules once widely supported
+                                //   and if MathJax (and its `TeX-AMS-MML_SVG.js` dependency) ends up
+                                //   providing an ES6 module export: https://github.com/mathjax/MathJax/issues/1998
 
+                                /*
+                                const modularVersion = !('svgEditor' in window) ||
+                                  !window.svgEditor ||
+                                  window.svgEditor.modules !== false;
+                                // Add as second argument to `importScript`
+                                {
+                                  type: modularVersion
+                                    ? 'module' // Make this the default when widely supported
+                                    : 'text/javascript'
+                                }
+                                // If only using modules, just use this:
+                                const {default: MathJax} = await importModule( // or `import()` when widely supported
+                                  svgEditor.curConfig.extIconsPath + mathjaxSrcSecure
+                                );
+                                */
+                                // We use `extIconsPath` here for now as it does not vary with
+                                //  the modular type as does `extPath`
 
-                      svgCanvas.setMode('mathjax');
-                    }
+                                _context.prev = 7;
+                                _context.next = 10;
+                                return importScript(svgEditor.curConfig.extIconsPath + mathjaxSrcSecure);
+
+                              case 10:
+                                // When MathJax is loaded get the div where the math will be rendered.
+                                MathJax.Hub.queue.Push(function () {
+                                  math = MathJax.Hub.getAllJax('#mathjax_creator')[0];
+                                  console.log(math); // eslint-disable-line no-console
+
+                                  mathjaxLoaded = true;
+                                  console.log('MathJax Loaded'); // eslint-disable-line no-console
+                                });
+                                _context.next = 17;
+                                break;
+
+                              case 13:
+                                _context.prev = 13;
+                                _context.t0 = _context["catch"](7);
+                                console.log('Failed loading MathJax.'); // eslint-disable-line no-console
+
+                                $.alert('Failed loading MathJax. You will not be able to change the mathematics.');
+
+                              case 17:
+                              case "end":
+                                return _context.stop();
+                            }
+                          }
+                        }, _callee, this, [[7, 13]]);
+                      }));
+
+                      return function click() {
+                        return _click.apply(this, arguments);
+                      };
+                    }()
                   }
                 }];
-                return _context.abrupt("return", {
+                return _context2.abrupt("return", {
                   name: strings.name,
                   svgicons: svgEditor.curConfig.extIconsPath + 'mathjax-icons.xml',
                   buttons: strings.buttons.map(function (button, i) {
@@ -272,6 +317,8 @@ var svgEditorExtension_mathjax = (function () {
                         started: true
                       };
                     }
+
+                    return undefined;
                   },
                   mouseUp: function mouseUp(opts) {
                     if (svgCanvas.getMode() === 'mathjax') {
@@ -285,6 +332,8 @@ var svgEditorExtension_mathjax = (function () {
                         started: false
                       }; // Otherwise the last selected object dissapears.
                     }
+
+                    return undefined;
                   },
                   callback: function callback() {
                     $('<style>').text('#mathjax fieldset{' + 'padding: 5px;' + 'margin: 5px;' + 'border: 1px solid #DDD;' + '}' + '#mathjax label{' + 'display: block;' + 'margin: .5em;' + '}' + '#mathjax legend {' + 'max-width:195px;' + '}' + '#mathjax_overlay {' + 'position: absolute;' + 'top: 0;' + 'left: 0;' + 'right: 0;' + 'bottom: 0;' + 'background-color: black;' + 'opacity: 0.6;' + 'z-index: 20000;' + '}' + '#mathjax_container {' + 'position: absolute;' + 'top: 50px;' + 'padding: 10px;' + 'background-color: #B0B0B0;' + 'border: 1px outset #777;' + 'opacity: 1.0;' + 'font-family: Verdana, Helvetica, sans-serif;' + 'font-size: .8em;' + 'z-index: 20001;' + '}' + '#tool_mathjax_back {' + 'margin-left: 1em;' + 'overflow: auto;' + '}' + '#mathjax_legend{' + 'font-weight: bold;' + 'font-size:1.1em;' + '}' + '#mathjax_code_textarea {\\n' + 'margin: 5px .7em;' + 'overflow: hidden;' + 'width: 416px;' + 'display: block;' + 'height: 100px;' + '}').appendTo('head'); // Add the MathJax configuration.
@@ -292,12 +341,12 @@ var svgEditorExtension_mathjax = (function () {
                   }
                 });
 
-              case 13:
+              case 12:
               case "end":
-                return _context.stop();
+                return _context2.stop();
             }
           }
-        }, _callee, this);
+        }, _callee2, this);
       }));
 
       return function init(_x) {
diff --git a/dist/extensions/ext-overview_window.js b/dist/extensions/ext-overview_window.js
index 7b82e5a3..6f0504ae 100644
--- a/dist/extensions/ext-overview_window.js
+++ b/dist/extensions/ext-overview_window.js
@@ -1,8 +1,6 @@
 var svgEditorExtension_overview_window = (function () {
   'use strict';
 
-  /* globals jQuery */
-
   /**
    * ext-overview_window.js
    *
@@ -14,18 +12,18 @@ var svgEditorExtension_overview_window = (function () {
   var extOverview_window = {
     name: 'overview_window',
     init: function init(_ref) {
-      var isChrome = _ref.isChrome,
+      var $ = _ref.$,
+          isChrome = _ref.isChrome,
           isIE = _ref.isIE;
-      var $ = jQuery;
       var overviewWindowGlobals = {}; // Disabled in Chrome 48-, see https://github.com/SVG-Edit/svgedit/issues/26 and
       // https://code.google.com/p/chromium/issues/detail?id=565120.
 
       if (isChrome()) {
         var verIndex = navigator.userAgent.indexOf('Chrome/') + 7;
-        var chromeVersion = parseInt(navigator.userAgent.substring(verIndex), 10);
+        var chromeVersion = parseInt(navigator.userAgent.substring(verIndex));
 
         if (chromeVersion < 49) {
-          return;
+          return undefined;
         }
       } // Define and insert the base html element.
 
diff --git a/dist/extensions/ext-panning.js b/dist/extensions/ext-panning.js
index ad9839f3..e2f6a987 100644
--- a/dist/extensions/ext-panning.js
+++ b/dist/extensions/ext-panning.js
@@ -91,6 +91,8 @@ var svgEditorExtension_panning = (function () {
                         started: true
                       };
                     }
+
+                    return undefined;
                   },
                   mouseUp: function mouseUp() {
                     if (svgCanvas.getMode() === 'ext-panning') {
@@ -100,6 +102,8 @@ var svgEditorExtension_panning = (function () {
                         element: null
                       };
                     }
+
+                    return undefined;
                   }
                 });
 
diff --git a/dist/extensions/ext-php_savefile.js b/dist/extensions/ext-php_savefile.js
index 79ca2aef..c3aad001 100644
--- a/dist/extensions/ext-php_savefile.js
+++ b/dist/extensions/ext-php_savefile.js
@@ -1,15 +1,18 @@
 var svgEditorExtension_php_savefile = (function () {
   'use strict';
 
-  /* globals jQuery */
   // TODO: Might add support for "exportImage" custom
   //   handler as in "ext-server_opensave.js" (and in savefile.php)
   var extPhp_savefile = {
     name: 'php_savefile',
-    init: function init() {
+    init: function init(_ref) {
+      var $ = _ref.$;
       var svgEditor = this;
-      var $ = jQuery;
       var svgCanvas = svgEditor.canvas;
+      /**
+       * Get file name out of SVGEdit document title.
+       * @returns {string}
+       */
 
       function getFileNameFromTitle() {
         var title = svgCanvas.getDocumentTitle();
diff --git a/dist/extensions/ext-polygon.js b/dist/extensions/ext-polygon.js
index 3ba282a3..87a0ab0d 100644
--- a/dist/extensions/ext-polygon.js
+++ b/dist/extensions/ext-polygon.js
@@ -37,8 +37,6 @@ var svgEditorExtension_polygon = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-polygon.js
    *
@@ -52,7 +50,7 @@ var svgEditorExtension_polygon = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(S) {
-        var svgEditor, $, svgCanvas, importLocale, editingitex, strings, selElems, started, newFO, showPanel, setAttr, cot, sec, buttons, contextTools;
+        var svgEditor, svgCanvas, $, importLocale, editingitex, strings, selElems, started, newFO, showPanel, setAttr, cot, sec, buttons, contextTools;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
@@ -82,13 +80,12 @@ var svgEditorExtension_polygon = (function () {
                 };
 
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas;
-                importLocale = S.importLocale, editingitex = false;
-                _context.next = 10;
+                $ = S.$, importLocale = S.importLocale, editingitex = false;
+                _context.next = 9;
                 return importLocale();
 
-              case 10:
+              case 9:
                 strings = _context.sent;
 
                 /**
@@ -189,88 +186,89 @@ var svgEditorExtension_polygon = (function () {
                     }, 3000);
                   },
                   mouseDown: function mouseDown(opts) {
-                    // const e = opts.event;
+                    if (svgCanvas.getMode() !== 'polygon') {
+                      return undefined;
+                    } // const e = opts.event;
+
+
                     var rgb = svgCanvas.getColor('fill'); // const ccRgbEl = rgb.substring(1, rgb.length);
 
                     var sRgb = svgCanvas.getColor('stroke'); // ccSRgbEl = sRgb.substring(1, rgb.length);
 
                     var sWidth = svgCanvas.getStrokeWidth();
-
-                    if (svgCanvas.getMode() === 'polygon') {
-                      started = true;
-                      newFO = svgCanvas.addSVGElementFromJson({
-                        element: 'polygon',
-                        attr: {
-                          cx: opts.start_x,
-                          cy: opts.start_y,
-                          id: svgCanvas.getNextId(),
-                          shape: 'regularPoly',
-                          sides: document.getElementById('polySides').value,
-                          orient: 'x',
-                          edge: 0,
-                          fill: rgb,
-                          strokecolor: sRgb,
-                          strokeWidth: sWidth
-                        }
-                      });
-                      return {
-                        started: true
-                      };
-                    }
+                    started = true;
+                    newFO = svgCanvas.addSVGElementFromJson({
+                      element: 'polygon',
+                      attr: {
+                        cx: opts.start_x,
+                        cy: opts.start_y,
+                        id: svgCanvas.getNextId(),
+                        shape: 'regularPoly',
+                        sides: document.getElementById('polySides').value,
+                        orient: 'x',
+                        edge: 0,
+                        fill: rgb,
+                        strokecolor: sRgb,
+                        strokeWidth: sWidth
+                      }
+                    });
+                    return {
+                      started: true
+                    };
                   },
                   mouseMove: function mouseMove(opts) {
-                    if (!started) {
-                      return;
-                    }
-
-                    if (svgCanvas.getMode() === 'polygon') {
-                      // const e = opts.event;
-                      var c = $(newFO).attr(['cx', 'cy', 'sides', 'orient', 'fill', 'strokecolor', 'strokeWidth']);
-                      var x = opts.mouse_x;
-                      var y = opts.mouse_y;
-                      var cx = c.cx,
-                          cy = c.cy,
-                          fill = c.fill,
-                          strokecolor = c.strokecolor,
-                          strokeWidth = c.strokeWidth,
-                          sides = c.sides,
-                          edg = Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy)) / 1.5;
-                      newFO.setAttribute('edge', edg);
-                      var inradius = edg / 2 * cot(Math.PI / sides);
-                      var circumradius = inradius * sec(Math.PI / sides);
-                      var points = '';
-
-                      for (var s = 0; sides >= s; s++) {
-                        var angle = 2.0 * Math.PI * s / sides;
-                        x = circumradius * Math.cos(angle) + cx;
-                        y = circumradius * Math.sin(angle) + cy;
-                        points += x + ',' + y + ' ';
-                      } // const poly = newFO.createElementNS(NS.SVG, 'polygon');
+                    if (!started || svgCanvas.getMode() !== 'polygon') {
+                      return undefined;
+                    } // const e = opts.event;
 
 
-                      newFO.setAttribute('points', points);
-                      newFO.setAttribute('fill', fill);
-                      newFO.setAttribute('stroke', strokecolor);
-                      newFO.setAttribute('stroke-width', strokeWidth); // newFO.setAttribute('transform', 'rotate(-90)');
-                      // const shape = newFO.getAttribute('shape');
-                      // newFO.append(poly);
-                      // DrawPoly(cx, cy, sides, edg, orient);
+                    var c = $(newFO).attr(['cx', 'cy', 'sides', 'orient', 'fill', 'strokecolor', 'strokeWidth']);
+                    var x = opts.mouse_x;
+                    var y = opts.mouse_y;
+                    var cx = c.cx,
+                        cy = c.cy,
+                        fill = c.fill,
+                        strokecolor = c.strokecolor,
+                        strokeWidth = c.strokeWidth,
+                        sides = c.sides,
+                        edg = Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy)) / 1.5;
+                    newFO.setAttribute('edge', edg);
+                    var inradius = edg / 2 * cot(Math.PI / sides);
+                    var circumradius = inradius * sec(Math.PI / sides);
+                    var points = '';
 
-                      return {
-                        started: true
-                      };
-                    }
+                    for (var s = 0; sides >= s; s++) {
+                      var angle = 2.0 * Math.PI * s / sides;
+                      x = circumradius * Math.cos(angle) + cx;
+                      y = circumradius * Math.sin(angle) + cy;
+                      points += x + ',' + y + ' ';
+                    } // const poly = newFO.createElementNS(NS.SVG, 'polygon');
+
+
+                    newFO.setAttribute('points', points);
+                    newFO.setAttribute('fill', fill);
+                    newFO.setAttribute('stroke', strokecolor);
+                    newFO.setAttribute('stroke-width', strokeWidth); // newFO.setAttribute('transform', 'rotate(-90)');
+                    // const shape = newFO.getAttribute('shape');
+                    // newFO.append(poly);
+                    // DrawPoly(cx, cy, sides, edg, orient);
+
+                    return {
+                      started: true
+                    };
                   },
                   mouseUp: function mouseUp(opts) {
-                    if (svgCanvas.getMode() === 'polygon') {
-                      var attrs = $(newFO).attr('edge');
-                      var keep = attrs.edge !== '0'; // svgCanvas.addToSelection([newFO], true);
-
-                      return {
-                        keep: keep,
-                        element: newFO
-                      };
+                    if (svgCanvas.getMode() !== 'polygon') {
+                      return undefined;
                     }
+
+                    var attrs = $(newFO).attr('edge');
+                    var keep = attrs.edge !== '0'; // svgCanvas.addToSelection([newFO], true);
+
+                    return {
+                      keep: keep,
+                      element: newFO
+                    };
                   },
                   selectedChanged: function selectedChanged(opts) {
                     // Use this to update the current selected elements
@@ -295,7 +293,7 @@ var svgEditorExtension_polygon = (function () {
                   elementChanged: function elementChanged(opts) {}
                 });
 
-              case 14:
+              case 13:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-server_moinsave.js b/dist/extensions/ext-server_moinsave.js
index d34d8d39..528726ca 100644
--- a/dist/extensions/ext-server_moinsave.js
+++ b/dist/extensions/ext-server_moinsave.js
@@ -380,20 +380,38 @@ var svgEditorExtension_server_moinsave = (function () {
   var colorDefs = [{
     re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
     example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 10), parseInt(bits[2], 10), parseInt(bits[3], 10)];
+    process: function process(_) {
+      for (var _len = arguments.length, bits = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        bits[_key - 1] = arguments[_key];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b);
+      });
     }
   }, {
     re: /^(\w{2})(\w{2})(\w{2})$/,
     example: ['#00ff00', '336699'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 16), parseInt(bits[2], 16), parseInt(bits[3], 16)];
+    process: function process(_) {
+      for (var _len2 = arguments.length, bits = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        bits[_key2 - 1] = arguments[_key2];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b, 16);
+      });
     }
   }, {
     re: /^(\w{1})(\w{1})(\w{1})$/,
     example: ['#fb0', 'f0f'],
-    process: function process(bits) {
-      return [parseInt(bits[1] + bits[1], 16), parseInt(bits[2] + bits[2], 16), parseInt(bits[3] + bits[3], 16)];
+    process: function process(_) {
+      for (var _len3 = arguments.length, bits = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
+        bits[_key3 - 1] = arguments[_key3];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b + b, 16);
+      });
     }
   }];
   /**
@@ -407,6 +425,8 @@ var svgEditorExtension_server_moinsave = (function () {
     * @param {string} colorString
     */
     function RGBColor(colorString) {
+      var _this = this;
+
       _classCallCheck(this, RGBColor);
 
       this.ok = false; // strip any leading #
@@ -426,9 +446,9 @@ var svgEditorExtension_server_moinsave = (function () {
       // search through the definitions to find a match
 
 
-      for (var i = 0; i < colorDefs.length; i++) {
-        var re = colorDefs[i].re;
-        var processor = colorDefs[i].process;
+      colorDefs.forEach(function (_ref) {
+        var re = _ref.re,
+            processor = _ref.process;
         var bits = re.exec(colorString);
 
         if (bits) {
@@ -438,15 +458,14 @@ var svgEditorExtension_server_moinsave = (function () {
               g = _processor2[1],
               b = _processor2[2];
 
-          Object.assign(this, {
+          Object.assign(_this, {
             r: r,
             g: g,
             b: b
           });
-          this.ok = true;
+          _this.ok = true;
         }
-      } // validate/cleanup values
-
+      }, this); // validate/cleanup values
 
       this.r = this.r < 0 || isNaN(this.r) ? 0 : this.r > 255 ? 255 : this.r;
       this.g = this.g < 0 || isNaN(this.g) ? 0 : this.g > 255 ? 255 : this.g;
@@ -488,88 +507,74 @@ var svgEditorExtension_server_moinsave = (function () {
 
         return '#' + r + g + b;
       }
-      /**
-      * Offers a bulleted list of help.
-      * @returns {HTMLUListElement}
-      */
-
-    }, {
-      key: "getHelpXML",
-      value: function getHelpXML() {
-        var examples = []; // add regexps
-
-        for (var i = 0; i < colorDefs.length; i++) {
-          var example = colorDefs[i].example;
-
-          for (var j = 0; j < example.length; j++) {
-            examples[examples.length] = example[j];
-          }
-        } // add type-in colors
-
-
-        examples.push.apply(examples, _toConsumableArray(Object.keys(simpleColors)));
-        var xml = document.createElement('ul');
-        xml.setAttribute('id', 'rgbcolor-examples');
-
-        for (var _i = 0; _i < examples.length; _i++) {
-          try {
-            var listItem = document.createElement('li');
-            var listColor = new RGBColor(examples[_i]);
-            var exampleDiv = document.createElement('div');
-            exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
-            exampleDiv.append('test');
-            var listItemValue = " ".concat(examples[_i], " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
-            listItem.append(exampleDiv, listItemValue);
-            xml.append(listItem);
-          } catch (e) {}
-        }
-
-        return xml;
-      }
     }]);
 
     return RGBColor;
   }();
 
+  RGBColor.getHelpXML = function () {
+    var examples = _toConsumableArray(colorDefs.flatMap(function (_ref2) {
+      var example = _ref2.example;
+      return example;
+    })).concat(_toConsumableArray(Object.keys(simpleColors)));
+
+    var xml = document.createElement('ul');
+    xml.setAttribute('id', 'rgbcolor-examples');
+    xml.append.apply(xml, _toConsumableArray(examples.map(function (example) {
+      try {
+        var listItem = document.createElement('li');
+        var listColor = new RGBColor(example);
+        var exampleDiv = document.createElement('div');
+        exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
+        exampleDiv.append('test');
+        var listItemValue = " ".concat(example, " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
+        listItem.append(exampleDiv, listItemValue);
+        return listItem;
+      } catch (e) {
+        return '';
+      }
+    })));
+    return xml;
+  };
+
   /**
   * StackBlur - a fast almost Gaussian Blur For Canvas
-
-  In case you find this class useful - especially in commercial projects -
-  I am not totally unhappy for a small donation to my PayPal account
-  mario@quasimondo.de
-
-  Or support me on flattr:
-  https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript
-
+  *
+  * In case you find this class useful - especially in commercial projects -
+  * I am not totally unhappy for a small donation to my PayPal account
+  * mario@quasimondo.de
+  *
+  * Or support me on flattr:
+  * {@link https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript}
   * @module StackBlur
   * @version 0.5
   * @author Mario Klingemann
-  Contact: mario@quasimondo.com
-  Website: http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
-  Twitter: @quasimondo
-
+  * Contact: mario@quasimondo.com
+  * Website: {@link http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html}
+  * Twitter: @quasimondo
+  *
   * @copyright (c) 2010 Mario Klingemann
-
-  Permission is hereby granted, free of charge, to any person
-  obtaining a copy of this software and associated documentation
-  files (the "Software"), to deal in the Software without
-  restriction, including without limitation the rights to use,
-  copy, modify, merge, publish, distribute, sublicense, and/or sell
-  copies of the Software, and to permit persons to whom the
-  Software is furnished to do so, subject to the following
-  conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-  OTHER DEALINGS IN THE SOFTWARE.
+  *
+  * Permission is hereby granted, free of charge, to any person
+  * obtaining a copy of this software and associated documentation
+  * files (the "Software"), to deal in the Software without
+  * restriction, including without limitation the rights to use,
+  * copy, modify, merge, publish, distribute, sublicense, and/or sell
+  * copies of the Software, and to permit persons to whom the
+  * Software is furnished to do so, subject to the following
+  * conditions:
+  *
+  * The above copyright notice and this permission notice shall be
+  * included in all copies or substantial portions of the Software.
+  *
+  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+  * OTHER DEALINGS IN THE SOFTWARE.
   */
   var mulTable = [512, 512, 456, 512, 328, 456, 335, 512, 405, 328, 271, 456, 388, 335, 292, 512, 454, 405, 364, 328, 298, 271, 496, 456, 420, 388, 360, 335, 312, 292, 273, 512, 482, 454, 428, 405, 383, 364, 345, 328, 312, 298, 284, 271, 259, 496, 475, 456, 437, 420, 404, 388, 374, 360, 347, 335, 323, 312, 302, 292, 282, 273, 265, 512, 497, 482, 468, 454, 441, 428, 417, 405, 394, 383, 373, 364, 354, 345, 337, 328, 320, 312, 305, 298, 291, 284, 278, 271, 265, 259, 507, 496, 485, 475, 465, 456, 446, 437, 428, 420, 412, 404, 396, 388, 381, 374, 367, 360, 354, 347, 341, 335, 329, 323, 318, 312, 307, 302, 297, 292, 287, 282, 278, 273, 269, 265, 261, 512, 505, 497, 489, 482, 475, 468, 461, 454, 447, 441, 435, 428, 422, 417, 411, 405, 399, 394, 389, 383, 378, 373, 368, 364, 359, 354, 350, 345, 341, 337, 332, 328, 324, 320, 316, 312, 309, 305, 301, 298, 294, 291, 287, 284, 281, 278, 274, 271, 268, 265, 262, 259, 257, 507, 501, 496, 491, 485, 480, 475, 470, 465, 460, 456, 451, 446, 442, 437, 433, 428, 424, 420, 416, 412, 408, 404, 400, 396, 392, 388, 385, 381, 377, 374, 370, 367, 363, 360, 357, 354, 350, 347, 344, 341, 338, 335, 332, 329, 326, 323, 320, 318, 315, 312, 310, 307, 304, 302, 299, 297, 294, 292, 289, 287, 285, 282, 280, 278, 275, 273, 271, 269, 267, 265, 263, 261, 259];
   var shgTable = [9, 11, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24];
@@ -843,7 +848,20 @@ var svgEditorExtension_server_moinsave = (function () {
     this.next = null;
   };
 
-  var canvasRGBA_ = processCanvasRGBA;
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+  var isNullish = function isNullish(val) {
+    return val === null || val === undefined;
+  };
+  /**
+  * @callback module:canvg.ForceRedraw
+  * @returns {boolean}
+  */
+
   /**
   * @typedef {PlainObject} module:canvg.CanvgOptions
   * @property {boolean} opts.ignoreMouse true => ignore mouse events
@@ -864,14 +882,15 @@ var svgEditorExtension_server_moinsave = (function () {
   * with `<canvas>` elements.
   * @function module:canvg.canvg
   * @param {HTMLCanvasElement|string} target canvas element or the id of a canvas element
-  * @param {string|XMLDocument} s: svg string, url to svg file, or xml document
+  * @param {string|XMLDocument} s - svg string, url to svg file, or xml document
   * @param {module:canvg.CanvgOptions} [opts] Optional hash of options
   * @returns {Promise} All the function after the first render is completed with dom
   */
 
+
   var canvg = function canvg(target, s, opts) {
     // no parameters
-    if (target == null && s == null && opts == null) {
+    if (isNullish(target) && isNullish(s) && isNullish(opts)) {
       var svgTags = document.querySelectorAll('svg');
       return Promise.all(_toConsumableArray(svgTags).map(function (svgTag) {
         var c = document.createElement('canvas');
@@ -890,7 +909,7 @@ var svgEditorExtension_server_moinsave = (function () {
     } // store class on canvas
 
 
-    if (target.svg != null) target.svg.stop();
+    if (!isNullish(target.svg)) target.svg.stop();
     var svg = build(opts || {}); // on i.e. 8 for flash canvas, we can't assign the property so check for it
 
     if (!(target.childNodes.length === 1 && target.childNodes[0].nodeName === 'OBJECT')) {
@@ -925,12 +944,15 @@ var svgEditorExtension_server_moinsave = (function () {
     svg.FRAMERATE = 30;
     svg.MAX_VIRTUAL_PIXELS = 30000;
 
-    svg.log = function (msg) {};
+    svg.log = function (msg) {
+      /* */
+    };
 
     if (svg.opts.log === true && typeof console !== 'undefined') {
       svg.log = function (msg) {
         console.log(msg);
-      };
+      }; // eslint-disable-line no-console
+
     } // globals
 
 
@@ -971,7 +993,7 @@ var svgEditorExtension_server_moinsave = (function () {
           return this.Current().height;
         },
         ComputeSize: function ComputeSize(d) {
-          if (d != null && typeof d === 'number') return d;
+          if (!isNullish(d) && typeof d === 'number') return d;
           if (d === 'x') return this.width();
           if (d === 'y') return this.height();
           return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
@@ -996,6 +1018,7 @@ var svgEditorExtension_server_moinsave = (function () {
     svg.compressSpaces = function (s) {
       return s.replace(/[\s\r\t\n]+/gm, ' ');
     }; // ajax
+    // Todo: Replace with `fetch` and polyfill
 
 
     svg.ajax = function (url, asynch) {
@@ -1003,6 +1026,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
       if (asynch) {
         return new Promise(function (resolve, reject) {
+          // eslint-disable-line promise/avoid-new
           var req = AJAX.open('GET', url, true);
           req.addEventListener('load', function () {
             resolve(AJAX.responseText);
@@ -1021,13 +1045,13 @@ var svgEditorExtension_server_moinsave = (function () {
       if (window.DOMParser) {
         var parser = new DOMParser();
         return parser.parseFromString(xml, 'text/xml');
-      } else {
-        xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
-        var xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
-        xmlDoc.async = 'false';
-        xmlDoc.loadXML(xml);
-        return xmlDoc;
       }
+
+      xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
+      var xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
+      xmlDoc.async = 'false';
+      xmlDoc.loadXML(xml);
+      return xmlDoc;
     }; // text extensions
     // get the text baseline
 
@@ -1064,7 +1088,7 @@ var svgEditorExtension_server_moinsave = (function () {
       }, {
         key: "hasValue",
         value: function hasValue() {
-          return this.value != null && this.value !== '';
+          return !isNullish(this.value) && this.value !== '';
         } // return the numerical value of the property
 
       }, {
@@ -1073,8 +1097,8 @@ var svgEditorExtension_server_moinsave = (function () {
           if (!this.hasValue()) return 0;
           var n = parseFloat(this.value);
 
-          if ((this.value + '').match(/%$/)) {
-            n = n / 100.0;
+          if (String(this.value).match(/%$/)) {
+            n /= 100.0;
           }
 
           return n;
@@ -1098,7 +1122,7 @@ var svgEditorExtension_server_moinsave = (function () {
         value: function addOpacity(opacityProp) {
           var newValue = this.value;
 
-          if (opacityProp.value != null && opacityProp.value !== '' && typeof this.value === 'string') {
+          if (!isNullish(opacityProp.value) && opacityProp.value !== '' && typeof this.value === 'string') {
             // can only add opacity to colors, not patterns
             var color = new RGBColor(this.value);
 
@@ -1136,12 +1160,12 @@ var svgEditorExtension_server_moinsave = (function () {
         value: function getFillStyleDefinition(e, opacityProp) {
           var def = this.getDefinition(); // gradient
 
-          if (def != null && def.createGradient) {
+          if (!isNullish(def) && def.createGradient) {
             return def.createGradient(svg.ctx, e, opacityProp);
           } // pattern
 
 
-          if (def != null && def.createPattern) {
+          if (!isNullish(def) && def.createPattern) {
             if (def.getHrefAttribute().hasValue()) {
               var pt = def.attribute('patternTransform');
               def = def.getHrefAttribute().getDefinition();
@@ -1173,15 +1197,14 @@ var svgEditorExtension_server_moinsave = (function () {
       }, {
         key: "getUnits",
         value: function getUnits() {
-          var s = this.value + '';
-          return s.replace(/[0-9.-]/g, '');
+          return String(this.value).replace(/[0-9.-]/g, '');
         } // get the length as pixels
 
       }, {
         key: "toPixels",
         value: function toPixels(viewPort, processPercent) {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/em$/)) return this.numValue() * this.getEM(viewPort);
           if (s.match(/ex$/)) return this.numValue() * this.getEM(viewPort) / 2.0;
           if (s.match(/px$/)) return this.numValue();
@@ -1201,7 +1224,7 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "toMilliseconds",
         value: function toMilliseconds() {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/s$/)) return this.numValue() * 1000;
           if (s.match(/ms$/)) return this.numValue();
           return this.numValue();
@@ -1212,7 +1235,7 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "toRadians",
         value: function toRadians() {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/deg$/)) return this.numValue() * (Math.PI / 180.0);
           if (s.match(/grad$/)) return this.numValue() * (Math.PI / 200.0);
           if (s.match(/rad$/)) return this.numValue();
@@ -1235,7 +1258,7 @@ var svgEditorExtension_server_moinsave = (function () {
       Variants: 'normal|small-caps|inherit',
       Weights: 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit',
       CreateFont: function CreateFont(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
-        var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
+        var f = !isNullish(inherit) ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
         return {
           fontFamily: fontFamily || f.fontFamily,
           fontSize: fontSize || f.fontSize,
@@ -1251,7 +1274,7 @@ var svgEditorExtension_server_moinsave = (function () {
         var _this = this;
 
         var f = {};
-        var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
+        var ds = svg.trim(svg.compressSpaces(s || '')).split(' ');
         var set = {
           fontSize: false,
           fontStyle: false,
@@ -1259,7 +1282,7 @@ var svgEditorExtension_server_moinsave = (function () {
           fontVariant: false
         };
         var ff = '';
-        d.forEach(function (d) {
+        ds.forEach(function (d) {
           if (!set.fontStyle && _this.Styles.includes(d)) {
             if (d !== 'inherit') {
               f.fontStyle = d;
@@ -1284,10 +1307,8 @@ var svgEditorExtension_server_moinsave = (function () {
             }
 
             set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
-          } else {
-            if (d !== 'inherit') {
-              ff += d;
-            }
+          } else if (d !== 'inherit') {
+            ff += d;
           }
         });
 
@@ -1301,8 +1322,8 @@ var svgEditorExtension_server_moinsave = (function () {
 
     svg.ToNumberArray = function (s) {
       var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
-      return a.map(function (a) {
-        return parseFloat(a);
+      return a.map(function (_a) {
+        return parseFloat(_a);
       });
     };
 
@@ -1389,7 +1410,7 @@ var svgEditorExtension_server_moinsave = (function () {
       }, {
         key: "addPoint",
         value: function addPoint(x, y) {
-          if (x != null) {
+          if (!isNullish(x)) {
             if (isNaN(this.x1) || isNaN(this.x2)) {
               this.x1 = x;
               this.x2 = x;
@@ -1399,7 +1420,7 @@ var svgEditorExtension_server_moinsave = (function () {
             if (x > this.x2) this.x2 = x;
           }
 
-          if (y != null) {
+          if (!isNullish(y)) {
             if (isNaN(this.y1) || isNaN(this.y2)) {
               this.y1 = y;
               this.y2 = y;
@@ -1553,9 +1574,10 @@ var svgEditorExtension_server_moinsave = (function () {
             };
 
             this.applyToPoint = function (p) {
-              var a = this.angle.toRadians();
+              var _a = this.angle.toRadians();
+
               p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
-              p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
+              p.applyTransform([Math.cos(_a), Math.sin(_a), -Math.sin(_a), Math.cos(_a), 0, 0]);
               p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
             };
           },
@@ -1721,7 +1743,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
       if (align === 'none') ctx.scale(scaleX, scaleY);else if (meetOrSlice === 'meet') ctx.scale(scaleMin, scaleMin);else if (meetOrSlice === 'slice') ctx.scale(scaleMax, scaleMax); // translate
 
-      ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
+      ctx.translate(isNullish(minX) ? 0 : -minX, isNullish(minY) ? 0 : -minY);
     }; // elements
 
 
@@ -1736,13 +1758,14 @@ var svgEditorExtension_server_moinsave = (function () {
 
         _classCallCheck(this, _class4);
 
-        this.captureTextNodes = arguments[1]; // Argument from inheriting class
+        // Argument from inheriting class
+        this.captureTextNodes = arguments[1]; // eslint-disable-line prefer-rest-params
 
         this.attributes = {};
         this.styles = {};
         this.children = [];
 
-        if (node != null && node.nodeType === 1) {
+        if (!isNullish(node) && node.nodeType === 1) {
           // ELEMENT_NODE
           // add children
           _toConsumableArray(node.childNodes).forEach(function (childNode) {
@@ -1771,10 +1794,14 @@ var svgEditorExtension_server_moinsave = (function () {
 
           var styles = svg.Styles[node.nodeName];
 
-          if (styles != null) {
-            for (var name in styles) {
-              this.styles[name] = styles[name];
-            }
+          if (!isNullish(styles)) {
+            Object.entries(styles).forEach(function (_ref2) {
+              var _ref3 = _slicedToArray(_ref2, 2),
+                  name = _ref3[0],
+                  styleValue = _ref3[1];
+
+              _this7.styles[name] = styleValue;
+            });
           } // add class styles
 
 
@@ -1783,18 +1810,26 @@ var svgEditorExtension_server_moinsave = (function () {
             classes.forEach(function (clss) {
               styles = svg.Styles['.' + clss];
 
-              if (styles != null) {
-                for (var _name in styles) {
-                  _this7.styles[_name] = styles[_name];
-                }
+              if (!isNullish(styles)) {
+                Object.entries(styles).forEach(function (_ref4) {
+                  var _ref5 = _slicedToArray(_ref4, 2),
+                      name = _ref5[0],
+                      styleValue = _ref5[1];
+
+                  _this7.styles[name] = styleValue;
+                });
               }
 
               styles = svg.Styles[node.nodeName + '.' + clss];
 
-              if (styles != null) {
-                for (var _name2 in styles) {
-                  _this7.styles[_name2] = styles[_name2];
-                }
+              if (!isNullish(styles)) {
+                Object.entries(styles).forEach(function (_ref6) {
+                  var _ref7 = _slicedToArray(_ref6, 2),
+                      name = _ref7[0],
+                      styleValue = _ref7[1];
+
+                  _this7.styles[name] = styleValue;
+                });
               }
             });
           } // add id styles
@@ -1803,10 +1838,14 @@ var svgEditorExtension_server_moinsave = (function () {
           if (this.attribute('id').hasValue()) {
             var _styles = svg.Styles['#' + this.attribute('id').value];
 
-            if (_styles != null) {
-              for (var _name3 in _styles) {
-                this.styles[_name3] = _styles[_name3];
-              }
+            if (!isNullish(_styles)) {
+              Object.entries(_styles).forEach(function (_ref8) {
+                var _ref9 = _slicedToArray(_ref8, 2),
+                    name = _ref9[0],
+                    styleValue = _ref9[1];
+
+                _this7.styles[name] = styleValue;
+              });
             }
           } // add inline styles
 
@@ -1817,19 +1856,19 @@ var svgEditorExtension_server_moinsave = (function () {
             _styles2.forEach(function (style) {
               if (svg.trim(style) !== '') {
                 var _style$split = style.split(':'),
-                    _name4 = _style$split.name,
+                    name = _style$split.name,
                     value = _style$split.value;
 
-                _name4 = svg.trim(_name4);
+                name = svg.trim(name);
                 value = svg.trim(value);
-                _this7.styles[_name4] = new svg.Property(_name4, value);
+                _this7.styles[name] = new svg.Property(name, value);
               }
             });
           } // add id
 
 
           if (this.attribute('id').hasValue()) {
-            if (svg.Definitions[this.attribute('id').value] == null) {
+            if (isNullish(svg.Definitions[this.attribute('id').value])) {
               svg.Definitions[this.attribute('id').value] = this;
             }
           }
@@ -1841,7 +1880,7 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "attribute",
         value: function attribute(name, createIfNotExists) {
           var a = this.attributes[name];
-          if (a != null) return a;
+          if (!isNullish(a)) return a;
 
           if (createIfNotExists === true) {
             a = new svg.Property(name, '');
@@ -1866,10 +1905,10 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "style",
         value: function style(name, createIfNotExists, skipAncestors) {
           var s = this.styles[name];
-          if (s != null) return s;
+          if (!isNullish(s)) return s;
           var a = this.attribute(name);
 
-          if (a != null && a.hasValue()) {
+          if (!isNullish(a) && a.hasValue()) {
             this.styles[name] = a; // move up to me to cache
 
             return a;
@@ -1878,10 +1917,10 @@ var svgEditorExtension_server_moinsave = (function () {
           if (skipAncestors !== true) {
             var p = this.parent;
 
-            if (p != null) {
+            if (!isNullish(p)) {
               var ps = p.style(name);
 
-              if (ps != null && ps.hasValue()) {
+              if (!isNullish(ps) && ps.hasValue()) {
                 return ps;
               }
             }
@@ -1907,11 +1946,11 @@ var svgEditorExtension_server_moinsave = (function () {
           if (this.attribute('mask').hasValue()) {
             // mask
             var mask = this.attribute('mask').getDefinition();
-            if (mask != null) mask.apply(ctx, this);
+            if (!isNullish(mask)) mask.apply(ctx, this);
           } else if (this.style('filter').hasValue()) {
             // filter
             var filter = this.style('filter').getDefinition();
-            if (filter != null) filter.apply(ctx, this);
+            if (!isNullish(filter)) filter.apply(ctx, this);
           } else {
             this.setContext(ctx);
             this.renderChildren(ctx);
@@ -1970,7 +2009,7 @@ var svgEditorExtension_server_moinsave = (function () {
           // fill
           if (this.style('fill').isUrlDefinition()) {
             var fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
-            if (fs != null) ctx.fillStyle = fs;
+            if (!isNullish(fs)) ctx.fillStyle = fs;
           } else if (this.style('fill').hasValue()) {
             var fillStyle = this.style('fill');
             if (fillStyle.value === 'currentColor') fillStyle.value = this.style('color').value;
@@ -1988,7 +2027,7 @@ var svgEditorExtension_server_moinsave = (function () {
           if (this.style('stroke').isUrlDefinition()) {
             var _fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
 
-            if (_fs != null) ctx.strokeStyle = _fs;
+            if (!isNullish(_fs)) ctx.strokeStyle = _fs;
           } else if (this.style('stroke').hasValue()) {
             var strokeStyle = this.style('stroke');
             if (strokeStyle.value === 'currentColor') strokeStyle.value = this.style('color').value;
@@ -2047,7 +2086,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
           if (this.style('clip-path', false, true).hasValue()) {
             var clip = this.style('clip-path', false, true).getDefinition();
-            if (clip != null) clip.apply(ctx);
+            if (!isNullish(clip)) clip.apply(ctx);
           } // opacity
 
 
@@ -2074,7 +2113,7 @@ var svgEditorExtension_server_moinsave = (function () {
       _createClass(_class6, [{
         key: "path",
         value: function path(ctx) {
-          if (ctx != null) ctx.beginPath();
+          if (!isNullish(ctx)) ctx.beginPath();
           return new svg.BoundingBox();
         }
       }, {
@@ -2094,7 +2133,7 @@ var svgEditorExtension_server_moinsave = (function () {
           if (ctx.strokeStyle !== '') ctx.stroke();
           var markers = this.getMarkers();
 
-          if (markers != null) {
+          if (!isNullish(markers)) {
             if (this.style('marker-start').isUrlDefinition()) {
               var marker = this.style('marker-start').getDefinition();
               marker.render(ctx, markers[0][0], markers[0][1]);
@@ -2239,7 +2278,7 @@ var svgEditorExtension_server_moinsave = (function () {
           rx = Math.min(rx, width / 2.0);
           ry = Math.min(ry, height / 2.0);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(x + rx, y);
             ctx.lineTo(x + width - rx, y);
@@ -2279,7 +2318,7 @@ var svgEditorExtension_server_moinsave = (function () {
           var cy = this.attribute('cy').toPixels('y');
           var r = this.attribute('r').toPixels();
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
             ctx.closePath();
@@ -2314,7 +2353,7 @@ var svgEditorExtension_server_moinsave = (function () {
           var cx = this.attribute('cx').toPixels('x');
           var cy = this.attribute('cy').toPixels('y');
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(cx, cy - ry);
             ctx.bezierCurveTo(cx + KAPPA * rx, cy - ry, cx + rx, cy - KAPPA * ry, cx + rx, cy);
@@ -2353,7 +2392,7 @@ var svgEditorExtension_server_moinsave = (function () {
         value: function path(ctx) {
           var points = this.getPoints();
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(points[0].x, points[0].y);
             ctx.lineTo(points[1].x, points[1].y);
@@ -2397,7 +2436,7 @@ var svgEditorExtension_server_moinsave = (function () {
               y = _this$points$.y;
           var bb = new svg.BoundingBox(x, y);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(x, y);
           }
@@ -2407,7 +2446,7 @@ var svgEditorExtension_server_moinsave = (function () {
                 _x = _this$points$i.x,
                 _y = _this$points$i.y;
             bb.addPoint(_x, _y);
-            if (ctx != null) ctx.lineTo(_x, _y);
+            if (!isNullish(ctx)) ctx.lineTo(_x, _y);
           }
 
           return bb;
@@ -2446,7 +2485,7 @@ var svgEditorExtension_server_moinsave = (function () {
         value: function path(ctx) {
           var bb = _get(_getPrototypeOf(_class13.prototype), "path", this).call(this, ctx);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.lineTo(this.points[0].x, this.points[0].y);
             ctx.closePath();
           }
@@ -2502,7 +2541,7 @@ var svgEditorExtension_server_moinsave = (function () {
           },
           isCommandOrEnd: function isCommandOrEnd() {
             if (this.isEnd()) return true;
-            return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
+            return !isNullish(this.tokens[this.i + 1].match(/^[A-Za-z]$/));
           },
           isRelativeCommand: function isRelativeCommand() {
             switch (this.command) {
@@ -2565,11 +2604,11 @@ var svgEditorExtension_server_moinsave = (function () {
           },
           addMarker: function addMarker(p, from, priorTo) {
             // if the last angle isn't filled in because we didn't have this point yet ...
-            if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length - 1] == null) {
+            if (!isNullish(priorTo) && this.angles.length > 0 && isNullish(this.angles[this.angles.length - 1])) {
               this.angles[this.angles.length - 1] = this.points[this.points.length - 1].angleTo(priorTo);
             }
 
-            this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
+            this.addMarkerAngle(p, isNullish(from) ? null : from.angleTo(p));
           },
           addMarkerAngle: function addMarkerAngle(p, a) {
             this.points.push(p);
@@ -2580,9 +2619,9 @@ var svgEditorExtension_server_moinsave = (function () {
           },
           getMarkerAngles: function getMarkerAngles() {
             for (var i = 0; i < this.angles.length; i++) {
-              if (this.angles[i] == null) {
+              if (isNullish(this.angles[i])) {
                 for (var j = i + 1; j < this.angles.length; j++) {
-                  if (this.angles[j] != null) {
+                  if (!isNullish(this.angles[j])) {
                     this.angles[i] = this.angles[j];
                     break;
                   }
@@ -2602,7 +2641,7 @@ var svgEditorExtension_server_moinsave = (function () {
           var pp = this.PathParser;
           pp.reset();
           var bb = new svg.BoundingBox();
-          if (ctx != null) ctx.beginPath();
+          if (!isNullish(ctx)) ctx.beginPath();
 
           while (!pp.isEnd()) {
             pp.nextCommand();
@@ -2610,22 +2649,24 @@ var svgEditorExtension_server_moinsave = (function () {
             switch (pp.command) {
               case 'M':
               case 'm':
-                var p = pp.getAsCurrentPoint();
-                pp.addMarker(p);
-                bb.addPoint(p.x, p.y);
-                if (ctx != null) ctx.moveTo(p.x, p.y);
-                pp.start = pp.current;
+                {
+                  var p = pp.getAsCurrentPoint();
+                  pp.addMarker(p);
+                  bb.addPoint(p.x, p.y);
+                  if (!isNullish(ctx)) ctx.moveTo(p.x, p.y);
+                  pp.start = pp.current;
 
-                while (!pp.isCommandOrEnd()) {
-                  var _p = pp.getAsCurrentPoint();
+                  while (!pp.isCommandOrEnd()) {
+                    var _p = pp.getAsCurrentPoint();
 
-                  pp.addMarker(_p, pp.start);
-                  bb.addPoint(_p.x, _p.y);
-                  if (ctx != null) ctx.lineTo(_p.x, _p.y);
+                    pp.addMarker(_p, pp.start);
+                    bb.addPoint(_p.x, _p.y);
+                    if (!isNullish(ctx)) ctx.lineTo(_p.x, _p.y);
+                  }
+
+                  break;
                 }
 
-                break;
-
               case 'L':
               case 'l':
                 while (!pp.isCommandOrEnd()) {
@@ -2635,7 +2676,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
                   pp.addMarker(_p2, c);
                   bb.addPoint(_p2.x, _p2.y);
-                  if (ctx != null) ctx.lineTo(_p2.x, _p2.y);
+                  if (!isNullish(ctx)) ctx.lineTo(_p2.x, _p2.y);
                 }
 
                 break;
@@ -2647,7 +2688,7 @@ var svgEditorExtension_server_moinsave = (function () {
                   pp.addMarker(newP, pp.current);
                   pp.current = newP;
                   bb.addPoint(pp.current.x, pp.current.y);
-                  if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+                  if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
                 }
 
                 break;
@@ -2660,7 +2701,7 @@ var svgEditorExtension_server_moinsave = (function () {
                   pp.addMarker(_newP, pp.current);
                   pp.current = _newP;
                   bb.addPoint(pp.current.x, pp.current.y);
-                  if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+                  if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
                 }
 
                 break;
@@ -2674,7 +2715,7 @@ var svgEditorExtension_server_moinsave = (function () {
                   var cp = pp.getAsCurrentPoint();
                   pp.addMarker(cp, cntrl, p1);
                   bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
-                  if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+                  if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
                 }
 
                 break;
@@ -2692,7 +2733,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
                   pp.addMarker(_cp, _cntrl, _p3);
                   bb.addBezierCurve(_curr.x, _curr.y, _p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
-                  if (ctx != null) ctx.bezierCurveTo(_p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
+                  if (!isNullish(ctx)) ctx.bezierCurveTo(_p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
                 }
 
                 break;
@@ -2708,7 +2749,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
                   pp.addMarker(_cp2, _cntrl2, _cntrl2);
                   bb.addQuadraticCurve(_curr2.x, _curr2.y, _cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
-                  if (ctx != null) ctx.quadraticCurveTo(_cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
+                  if (!isNullish(ctx)) ctx.quadraticCurveTo(_cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
                 }
 
                 break;
@@ -2726,7 +2767,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
                   pp.addMarker(_cp3, _cntrl3, _cntrl3);
                   bb.addQuadraticCurve(_curr3.x, _curr3.y, _cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
-                  if (ctx != null) ctx.quadraticCurveTo(_cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
+                  if (!isNullish(ctx)) ctx.quadraticCurveTo(_cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
                 }
 
                 break;
@@ -2790,7 +2831,7 @@ var svgEditorExtension_server_moinsave = (function () {
                   pp.addMarkerAngle(cp, ah - dir * Math.PI);
                   bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
 
-                  if (ctx != null) {
+                  if (!isNullish(ctx)) {
                     var _r = rx > ry ? rx : ry;
 
                     var sx = rx > ry ? 1 : rx / ry;
@@ -2813,7 +2854,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
               case 'Z':
               case 'z':
-                if (ctx != null) ctx.closePath();
+                if (!isNullish(ctx)) ctx.closePath();
                 pp.current = pp.start;
             }
           }
@@ -2854,10 +2895,10 @@ var svgEditorExtension_server_moinsave = (function () {
           var height = this.attribute('height').toPixels('y', true); // render me using a temporary svg element
 
           var tempSvg = new svg.Element.svg();
-          tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
-          tempSvg.attributes['width'] = new svg.Property('width', width + 'px');
-          tempSvg.attributes['height'] = new svg.Property('height', height + 'px');
-          tempSvg.attributes['transform'] = new svg.Property('transform', this.attribute('patternTransform').value);
+          tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
+          tempSvg.attributes.width = new svg.Property('width', width + 'px');
+          tempSvg.attributes.height = new svg.Property('height', height + 'px');
+          tempSvg.attributes.transform = new svg.Property('transform', this.attribute('patternTransform').value);
           tempSvg.children = this.children;
           var c = document.createElement('canvas');
           c.width = width;
@@ -2907,13 +2948,13 @@ var svgEditorExtension_server_moinsave = (function () {
           ctx.save(); // render me using a temporary svg element
 
           var tempSvg = new svg.Element.svg();
-          tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
-          tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
-          tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
-          tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
-          tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
-          tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
-          tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
+          tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
+          tempSvg.attributes.refX = new svg.Property('refX', this.attribute('refX').value);
+          tempSvg.attributes.refY = new svg.Property('refY', this.attribute('refY').value);
+          tempSvg.attributes.width = new svg.Property('width', this.attribute('markerWidth').value);
+          tempSvg.attributes.height = new svg.Property('height', this.attribute('markerHeight').value);
+          tempSvg.attributes.fill = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
+          tempSvg.attributes.stroke = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
           tempSvg.children = this.children;
           tempSvg.render(ctx);
           ctx.restore();
@@ -2990,10 +3031,10 @@ var svgEditorExtension_server_moinsave = (function () {
           };
 
           var g = this.getGradient(ctx, element);
-          if (g == null) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
-          stopsContainer.stops.forEach(function (_ref2) {
-            var offset = _ref2.offset,
-                color = _ref2.color;
+          if (isNullish(g)) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
+          stopsContainer.stops.forEach(function (_ref10) {
+            var offset = _ref10.offset,
+                color = _ref10.color;
             g.addColorStop(offset, addParentOpacity(color));
           });
 
@@ -3001,18 +3042,18 @@ var svgEditorExtension_server_moinsave = (function () {
             // render as transformed pattern on temporary canvas
             var rootView = svg.ViewPort.viewPorts[0];
             var rect = new svg.Element.rect();
-            rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
-            rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
-            rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
-            rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
+            rect.attributes.x = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
+            rect.attributes.y = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
+            rect.attributes.width = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
+            rect.attributes.height = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
             var group = new svg.Element.g();
-            group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
+            group.attributes.transform = new svg.Property('transform', this.attribute('gradientTransform').value);
             group.children = [rect];
             var tempSvg = new svg.Element.svg();
-            tempSvg.attributes['x'] = new svg.Property('x', 0);
-            tempSvg.attributes['y'] = new svg.Property('y', 0);
-            tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
-            tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
+            tempSvg.attributes.x = new svg.Property('x', 0);
+            tempSvg.attributes.y = new svg.Property('y', 0);
+            tempSvg.attributes.width = new svg.Property('width', rootView.width);
+            tempSvg.attributes.height = new svg.Property('height', rootView.height);
             tempSvg.children = [group];
             var c = document.createElement('canvas');
             c.width = rootView.width;
@@ -3185,7 +3226,7 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "update",
         value: function update(delta) {
           // set initial value
-          if (this.initialValue == null) {
+          if (isNullish(this.initialValue)) {
             this.initialValue = this.getProperty().value;
             this.initialUnits = this.getProperty().getUnits();
           } // if we're past the end time
@@ -3303,7 +3344,7 @@ var svgEditorExtension_server_moinsave = (function () {
             var r = from.r + (to.r - from.r) * p.progress;
             var g = from.g + (to.g - from.g) * p.progress;
             var b = from.b + (to.b - from.b) * p.progress;
-            return 'rgb(' + parseInt(r, 10) + ',' + parseInt(g, 10) + ',' + parseInt(b, 10) + ')';
+            return 'rgb(' + parseInt(r) + ',' + parseInt(g) + ',' + parseInt(b) + ')';
           }
 
           return this.attribute('from').value;
@@ -3472,8 +3513,8 @@ var svgEditorExtension_server_moinsave = (function () {
           _get(_getPrototypeOf(_class30.prototype), "setContext", this).call(this, ctx);
 
           var textBaseline = this.style('dominant-baseline').toTextBaseline();
-          if (textBaseline == null) textBaseline = this.style('alignment-baseline').toTextBaseline();
-          if (textBaseline != null) ctx.textBaseline = textBaseline;
+          if (isNullish(textBaseline)) textBaseline = this.style('alignment-baseline').toTextBaseline();
+          if (!isNullish(textBaseline)) ctx.textBaseline = textBaseline;
         }
       }, {
         key: "getBoundingBox",
@@ -3543,8 +3584,8 @@ var svgEditorExtension_server_moinsave = (function () {
           this.y = child.y;
           child.render(ctx);
 
-          for (var _i = 0; _i < child.children.length; _i++) {
-            this.renderChild(ctx, child, _i);
+          for (var j = 0; j < child.children.length; j++) {
+            this.renderChild(ctx, child, j);
           }
         }
       }]);
@@ -3578,13 +3619,13 @@ var svgEditorExtension_server_moinsave = (function () {
 
             if (typeof font.glyphs[c] !== 'undefined') {
               glyph = font.glyphs[c][arabicForm];
-              if (glyph == null && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
+              if (isNullish(glyph) && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
             }
           } else {
             glyph = font.glyphs[c];
           }
 
-          if (glyph == null) glyph = font.missingGlyph;
+          if (isNullish(glyph)) glyph = font.missingGlyph;
           return glyph;
         }
       }, {
@@ -3592,7 +3633,7 @@ var svgEditorExtension_server_moinsave = (function () {
         value: function renderChildren(ctx) {
           var customFont = this.parent.style('font-family').getDefinition();
 
-          if (customFont != null) {
+          if (!isNullish(customFont)) {
             var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
             var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
             var text = this.getText();
@@ -3643,7 +3684,7 @@ var svgEditorExtension_server_moinsave = (function () {
         value: function measureText(ctx) {
           var customFont = this.parent.style('font-family').getDefinition();
 
-          if (customFont != null) {
+          if (!isNullish(customFont)) {
             var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
             var measure = 0;
             var text = this.getText();
@@ -3720,7 +3761,8 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "getText",
         value: function getText() {
           var element = this.getHrefAttribute().getDefinition();
-          if (element != null) return element.children[0].getText();
+          if (!isNullish(element)) return element.children[0].getText();
+          return undefined;
         }
       }]);
 
@@ -3819,22 +3861,25 @@ var svgEditorExtension_server_moinsave = (function () {
             _this20.img.crossOrigin = 'Anonymous';
           }
 
-          var self = _assertThisInitialized(_assertThisInitialized(_this20));
-
           _this20.img.onload = function () {
-            self.loaded = true;
+            _this20.loaded = true;
           };
 
           _this20.img.onerror = function () {
             svg.log('ERROR: image "' + href + '" not found');
-            self.loaded = true;
+            _this20.loaded = true;
           };
 
           _this20.img.src = href;
         } else {
           svg.ajax(href, true).then(function (img) {
+            // eslint-disable-line promise/prefer-await-to-then, promise/always-return
             _this20.img = img;
             _this20.loaded = true;
+          }).catch(function (err) {
+            // eslint-disable-line promise/prefer-await-to-callbacks
+            _this20.erred = true;
+            console.error('Ajax error for canvg', err); // eslint-disable-line no-console
           });
         }
 
@@ -3937,8 +3982,8 @@ var svgEditorExtension_server_moinsave = (function () {
 
         var css = '';
 
-        _toConsumableArray(node.childNodes).forEach(function (_ref3) {
-          var nodeValue = _ref3.nodeValue;
+        _toConsumableArray(node.childNodes).forEach(function (_ref11) {
+          var nodeValue = _ref11.nodeValue;
           css += nodeValue;
         });
 
@@ -3966,7 +4011,7 @@ var svgEditorExtension_server_moinsave = (function () {
                   var name = cssProp.substr(0, prop);
                   var value = cssProp.substr(prop + 1, cssProp.length - prop);
 
-                  if (name != null && value != null) {
+                  if (!isNullish(name) && !isNullish(value)) {
                     props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
                   }
                 });
@@ -3974,7 +4019,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
                 if (cssClass === '@font-face') {
                   var fontFamily = props['font-family'].value.replace(/"/g, '');
-                  var srcs = props['src'].value.split(',');
+                  var srcs = props.src.value.split(',');
                   srcs.forEach(function (src) {
                     if (src.includes('format("svg")')) {
                       var urlStart = src.indexOf('url');
@@ -4029,36 +4074,37 @@ var svgEditorExtension_server_moinsave = (function () {
         key: "path",
         value: function path(ctx) {
           var element = this._el;
-          if (element != null) element.path(ctx);
+          if (!isNullish(element)) element.path(ctx);
         }
       }, {
         key: "getBoundingBox",
         value: function getBoundingBox() {
           var element = this._el;
-          if (element != null) return element.getBoundingBox();
+          if (!isNullish(element)) return element.getBoundingBox();
+          return undefined;
         }
       }, {
         key: "renderChildren",
         value: function renderChildren(ctx) {
           var element = this._el;
 
-          if (element != null) {
+          if (!isNullish(element)) {
             var tempSvg = element;
 
             if (element.type === 'symbol') {
               // render me using a temporary svg element in symbol cases (https://www.w3.org/TR/SVG/struct.html#UseElement)
               tempSvg = new svg.Element.svg();
               tempSvg.type = 'svg';
-              tempSvg.attributes['viewBox'] = new svg.Property('viewBox', element.attribute('viewBox').value);
-              tempSvg.attributes['preserveAspectRatio'] = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
-              tempSvg.attributes['overflow'] = new svg.Property('overflow', element.attribute('overflow').value);
+              tempSvg.attributes.viewBox = new svg.Property('viewBox', element.attribute('viewBox').value);
+              tempSvg.attributes.preserveAspectRatio = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
+              tempSvg.attributes.overflow = new svg.Property('overflow', element.attribute('overflow').value);
               tempSvg.children = element.children;
             }
 
             if (tempSvg.type === 'svg') {
               // if symbol or svg, inherit width/height from me
-              if (this.attribute('width').hasValue()) tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
-              if (this.attribute('height').hasValue()) tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
+              if (this.attribute('width').hasValue()) tempSvg.attributes.width = new svg.Property('width', this.attribute('width').value);
+              if (this.attribute('height').hasValue()) tempSvg.attributes.height = new svg.Property('height', this.attribute('height').value);
             }
 
             var oldParent = tempSvg.parent;
@@ -4270,10 +4316,31 @@ var svgEditorExtension_server_moinsave = (function () {
 
       return _class44;
     }(svg.Element.ElementBase);
+    /**
+    * @param {Uint8ClampedArray} img
+    * @param {Integer} x
+    * @param {Integer} y
+    * @param {Float} width
+    * @param {Float} height
+    * @param {Integer} rgba
+    * @returns {undefined}
+    */
+
 
     function imGet(img, x, y, width, height, rgba) {
       return img[y * width * 4 + x * 4 + rgba];
     }
+    /**
+    * @param {Uint8ClampedArray} img
+    * @param {Integer} x
+    * @param {Integer} y
+    * @param {Float} width
+    * @param {Float} height
+    * @param {Integer} rgba
+    * @param {Float} val
+    * @returns {undefined}
+    */
+
 
     function imSet(img, x, y, width, height, rgba, val) {
       img[y * width * 4 + x * 4 + rgba] = val;
@@ -4295,19 +4362,23 @@ var svgEditorExtension_server_moinsave = (function () {
         switch (_this23.attribute('type').valueOrDefault('matrix')) {
           // https://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
           case 'saturate':
-            var s = matrix[0];
-            matrix = [0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
-            break;
+            {
+              var s = matrix[0];
+              matrix = [0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
+              break;
+            }
 
           case 'hueRotate':
-            var a = matrix[0] * Math.PI / 180.0;
+            {
+              var a = matrix[0] * Math.PI / 180.0;
 
-            var c = function c(m1, m2, m3) {
-              return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
-            };
+              var c = function c(m1, m2, m3) {
+                return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
+              };
 
-            matrix = [c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0, c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0, c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
-            break;
+              matrix = [c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0, c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0, c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
+              break;
+            }
 
           case 'luminanceToAlpha':
             matrix = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.2125, 0.7154, 0.0721, 0, 0, 0, 0, 0, 0, 1];
@@ -4331,16 +4402,16 @@ var svgEditorExtension_server_moinsave = (function () {
 
           var srcData = ctx.getImageData(0, 0, width, height);
 
-          for (var _y2 = 0; _y2 < height; _y2++) {
-            for (var _x2 = 0; _x2 < width; _x2++) {
-              var r = imGet(srcData.data, _x2, _y2, width, height, 0);
-              var g = imGet(srcData.data, _x2, _y2, width, height, 1);
-              var b = imGet(srcData.data, _x2, _y2, width, height, 2);
-              var a = imGet(srcData.data, _x2, _y2, width, height, 3);
-              imSet(srcData.data, _x2, _y2, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
+          for (var _y = 0; _y < height; _y++) {
+            for (var _x = 0; _x < width; _x++) {
+              var r = imGet(srcData.data, _x, _y, width, height, 0);
+              var g = imGet(srcData.data, _x, _y, width, height, 1);
+              var b = imGet(srcData.data, _x, _y, width, height, 2);
+              var a = imGet(srcData.data, _x, _y, width, height, 3);
+              imSet(srcData.data, _x, _y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
+              imSet(srcData.data, _x, _y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
+              imSet(srcData.data, _x, _y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
+              imSet(srcData.data, _x, _y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
             }
           }
 
@@ -4371,17 +4442,12 @@ var svgEditorExtension_server_moinsave = (function () {
       _createClass(_class46, [{
         key: "apply",
         value: function apply(ctx, x, y, width, height) {
-          if (typeof canvasRGBA_ !== 'function') {
-            svg.log('ERROR: The function `setStackBlurCanvasRGBA` must be present for blur to work');
-            return;
-          } // Todo: This might not be a problem anymore with out `instanceof` fix
+          // Todo: This might not be a problem anymore with out `instanceof` fix
           // StackBlur requires canvas be on document
-
-
           ctx.canvas.id = svg.UniqueId();
           ctx.canvas.style.display = 'none';
           document.body.append(ctx.canvas);
-          canvasRGBA_(ctx.canvas, x, y, width, height, this.blurRadius);
+          processCanvasRGBA(ctx.canvas, x, y, width, height, this.blurRadius);
           ctx.canvas.remove();
         }
       }]);
@@ -4458,7 +4524,7 @@ var svgEditorExtension_server_moinsave = (function () {
     svg.load =
     /*#__PURE__*/
     function () {
-      var _ref4 = _asyncToGenerator(
+      var _ref12 = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(ctx, url) {
         var dom;
@@ -4481,8 +4547,8 @@ var svgEditorExtension_server_moinsave = (function () {
         }, _callee, this);
       }));
 
-      return function (_x3, _x4) {
-        return _ref4.apply(this, arguments);
+      return function (_x2, _x3) {
+        return _ref12.apply(this, arguments);
       };
     }(); // load from xml
 
@@ -4512,7 +4578,7 @@ var svgEditorExtension_server_moinsave = (function () {
 
       if (svg.opts.ignoreMouse !== true) {
         ctx.canvas.onclick = function (e) {
-          var args = e != null ? [e.clientX, e.clientY] : [event.clientX, event.clientY];
+          var args = !isNullish(e) ? [e.clientX, e.clientY] : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
 
           var _mapXY = mapXY(_construct(svg.Point, args)),
               x = _mapXY.x,
@@ -4522,7 +4588,7 @@ var svgEditorExtension_server_moinsave = (function () {
         };
 
         ctx.canvas.onmousemove = function (e) {
-          var args = e != null ? [e.clientX, e.clientY] : [event.clientX, event.clientY];
+          var args = !isNullish(e) ? [e.clientX, e.clientY] : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
 
           var _mapXY2 = mapXY(_construct(svg.Point, args)),
               x = _mapXY2.x,
@@ -4567,20 +4633,20 @@ var svgEditorExtension_server_moinsave = (function () {
 
         svg.ViewPort.SetCurrent(cWidth, cHeight);
 
-        if (svg.opts.offsetX != null) {
+        if (!isNullish(svg.opts.offsetX)) {
           e.attribute('x', true).value = svg.opts.offsetX;
         }
 
-        if (svg.opts.offsetY != null) {
+        if (!isNullish(svg.opts.offsetY)) {
           e.attribute('y', true).value = svg.opts.offsetY;
         }
 
-        if (svg.opts.scaleWidth != null || svg.opts.scaleHeight != null) {
+        if (!isNullish(svg.opts.scaleWidth) || !isNullish(svg.opts.scaleHeight)) {
           var viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
           var xRatio = null,
               yRatio = null;
 
-          if (svg.opts.scaleWidth != null) {
+          if (!isNullish(svg.opts.scaleWidth)) {
             if (e.attribute('width').hasValue()) {
               xRatio = e.attribute('width').toPixels('x') / svg.opts.scaleWidth;
             } else if (!isNaN(viewBox[2])) {
@@ -4588,7 +4654,7 @@ var svgEditorExtension_server_moinsave = (function () {
             }
           }
 
-          if (svg.opts.scaleHeight != null) {
+          if (!isNullish(svg.opts.scaleHeight)) {
             if (e.attribute('height').hasValue()) {
               yRatio = e.attribute('height').toPixels('y') / svg.opts.scaleHeight;
             } else if (!isNaN(viewBox[3])) {
@@ -4596,11 +4662,11 @@ var svgEditorExtension_server_moinsave = (function () {
             }
           }
 
-          if (xRatio == null) {
+          if (isNullish(xRatio)) {
             xRatio = yRatio;
           }
 
-          if (yRatio == null) {
+          if (isNullish(yRatio)) {
             yRatio = xRatio;
           }
 
@@ -4634,13 +4700,14 @@ var svgEditorExtension_server_moinsave = (function () {
 
 
         if (svg.opts.ignoreMouse !== true) {
-          needUpdate = needUpdate | svg.Mouse.hasEvents();
+          needUpdate = needUpdate || svg.Mouse.hasEvents();
         } // need update from animations?
 
 
         if (svg.opts.ignoreAnimation !== true) {
           svg.Animations.forEach(function (animation) {
-            needUpdate = needUpdate | animation.update(1000 / svg.FRAMERATE);
+            var needAnimationUpdate = animation.update(1000 / svg.FRAMERATE);
+            needUpdate = needUpdate || needAnimationUpdate;
           });
         } // need update from redraw?
 
@@ -4656,8 +4723,10 @@ var svgEditorExtension_server_moinsave = (function () {
           draw(res);
           svg.Mouse.runEvents(); // run and clear our events
         }
-      }, 1000 / svg.FRAMERATE);
+      }, 1000 / svg.FRAMERATE); // Todo: Replace with an image loading Promise utility?
+
       return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
         if (svg.ImagesLoaded()) {
           waitingForImages = false;
           draw(resolve);
@@ -4703,9 +4772,9 @@ var svgEditorExtension_server_moinsave = (function () {
       checkPath: function checkPath(element, ctx) {
         var _this26 = this;
 
-        this.events.forEach(function (_ref5, i) {
-          var x = _ref5.x,
-              y = _ref5.y;
+        this.events.forEach(function (_ref13, i) {
+          var x = _ref13.x,
+              y = _ref13.y;
 
           if (ctx.isPointInPath && ctx.isPointInPath(x, y)) {
             _this26.eventElements[i] = element;
@@ -4715,9 +4784,9 @@ var svgEditorExtension_server_moinsave = (function () {
       checkBoundingBox: function checkBoundingBox(element, bb) {
         var _this27 = this;
 
-        this.events.forEach(function (_ref6, i) {
-          var x = _ref6.x,
-              y = _ref6.y;
+        this.events.forEach(function (_ref14, i) {
+          var x = _ref14.x,
+              y = _ref14.y;
 
           if (bb.isPointInBox(x, y)) {
             _this27.eventElements[i] = element;
@@ -4765,19 +4834,18 @@ var svgEditorExtension_server_moinsave = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee2(_ref) {
-        var encode64, importLocale, strings, svgEditor, $, svgCanvas, saveSvgAction;
+        var $, encode64, importLocale, strings, svgEditor, svgCanvas, saveSvgAction;
         return regeneratorRuntime.wrap(function _callee2$(_context2) {
           while (1) {
             switch (_context2.prev = _context2.next) {
               case 0:
-                encode64 = _ref.encode64, importLocale = _ref.importLocale;
+                $ = _ref.$, encode64 = _ref.encode64, importLocale = _ref.importLocale;
                 _context2.next = 3;
                 return importLocale();
 
               case 3:
                 strings = _context2.sent;
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas;
                 saveSvgAction = '/+modify'; // Create upload target (hidden iframe)
 
@@ -4823,7 +4891,7 @@ var svgEditorExtension_server_moinsave = (function () {
                                 action: saveSvgAction + '/' + name,
                                 target: 'output_frame'
                               }).append('<input type="hidden" name="png_data" value="' + pngData + '">').append('<input type="hidden" name="filepath" value="' + svgData + '">').append('<input type="hidden" name="filename" value="' + 'drawing.svg">').append('<input type="hidden" name="contenttype" value="application/x-svgdraw">').appendTo('body').submit().remove();
-                              alert(strings.saved);
+                              $.alert(strings.saved);
                               top.window.location = '/' + name;
 
                             case 15:
@@ -4840,7 +4908,7 @@ var svgEditorExtension_server_moinsave = (function () {
                   }()
                 });
 
-              case 10:
+              case 9:
               case "end":
                 return _context2.stop();
             }
diff --git a/dist/extensions/ext-server_opensave.js b/dist/extensions/ext-server_opensave.js
index 4e05c2ab..0a62dad5 100644
--- a/dist/extensions/ext-server_opensave.js
+++ b/dist/extensions/ext-server_opensave.js
@@ -380,20 +380,38 @@ var svgEditorExtension_server_opensave = (function () {
   var colorDefs = [{
     re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
     example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 10), parseInt(bits[2], 10), parseInt(bits[3], 10)];
+    process: function process(_) {
+      for (var _len = arguments.length, bits = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        bits[_key - 1] = arguments[_key];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b);
+      });
     }
   }, {
     re: /^(\w{2})(\w{2})(\w{2})$/,
     example: ['#00ff00', '336699'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 16), parseInt(bits[2], 16), parseInt(bits[3], 16)];
+    process: function process(_) {
+      for (var _len2 = arguments.length, bits = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        bits[_key2 - 1] = arguments[_key2];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b, 16);
+      });
     }
   }, {
     re: /^(\w{1})(\w{1})(\w{1})$/,
     example: ['#fb0', 'f0f'],
-    process: function process(bits) {
-      return [parseInt(bits[1] + bits[1], 16), parseInt(bits[2] + bits[2], 16), parseInt(bits[3] + bits[3], 16)];
+    process: function process(_) {
+      for (var _len3 = arguments.length, bits = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
+        bits[_key3 - 1] = arguments[_key3];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b + b, 16);
+      });
     }
   }];
   /**
@@ -407,6 +425,8 @@ var svgEditorExtension_server_opensave = (function () {
     * @param {string} colorString
     */
     function RGBColor(colorString) {
+      var _this = this;
+
       _classCallCheck(this, RGBColor);
 
       this.ok = false; // strip any leading #
@@ -426,9 +446,9 @@ var svgEditorExtension_server_opensave = (function () {
       // search through the definitions to find a match
 
 
-      for (var i = 0; i < colorDefs.length; i++) {
-        var re = colorDefs[i].re;
-        var processor = colorDefs[i].process;
+      colorDefs.forEach(function (_ref) {
+        var re = _ref.re,
+            processor = _ref.process;
         var bits = re.exec(colorString);
 
         if (bits) {
@@ -438,15 +458,14 @@ var svgEditorExtension_server_opensave = (function () {
               g = _processor2[1],
               b = _processor2[2];
 
-          Object.assign(this, {
+          Object.assign(_this, {
             r: r,
             g: g,
             b: b
           });
-          this.ok = true;
+          _this.ok = true;
         }
-      } // validate/cleanup values
-
+      }, this); // validate/cleanup values
 
       this.r = this.r < 0 || isNaN(this.r) ? 0 : this.r > 255 ? 255 : this.r;
       this.g = this.g < 0 || isNaN(this.g) ? 0 : this.g > 255 ? 255 : this.g;
@@ -488,88 +507,74 @@ var svgEditorExtension_server_opensave = (function () {
 
         return '#' + r + g + b;
       }
-      /**
-      * Offers a bulleted list of help.
-      * @returns {HTMLUListElement}
-      */
-
-    }, {
-      key: "getHelpXML",
-      value: function getHelpXML() {
-        var examples = []; // add regexps
-
-        for (var i = 0; i < colorDefs.length; i++) {
-          var example = colorDefs[i].example;
-
-          for (var j = 0; j < example.length; j++) {
-            examples[examples.length] = example[j];
-          }
-        } // add type-in colors
-
-
-        examples.push.apply(examples, _toConsumableArray(Object.keys(simpleColors)));
-        var xml = document.createElement('ul');
-        xml.setAttribute('id', 'rgbcolor-examples');
-
-        for (var _i = 0; _i < examples.length; _i++) {
-          try {
-            var listItem = document.createElement('li');
-            var listColor = new RGBColor(examples[_i]);
-            var exampleDiv = document.createElement('div');
-            exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
-            exampleDiv.append('test');
-            var listItemValue = " ".concat(examples[_i], " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
-            listItem.append(exampleDiv, listItemValue);
-            xml.append(listItem);
-          } catch (e) {}
-        }
-
-        return xml;
-      }
     }]);
 
     return RGBColor;
   }();
 
+  RGBColor.getHelpXML = function () {
+    var examples = _toConsumableArray(colorDefs.flatMap(function (_ref2) {
+      var example = _ref2.example;
+      return example;
+    })).concat(_toConsumableArray(Object.keys(simpleColors)));
+
+    var xml = document.createElement('ul');
+    xml.setAttribute('id', 'rgbcolor-examples');
+    xml.append.apply(xml, _toConsumableArray(examples.map(function (example) {
+      try {
+        var listItem = document.createElement('li');
+        var listColor = new RGBColor(example);
+        var exampleDiv = document.createElement('div');
+        exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
+        exampleDiv.append('test');
+        var listItemValue = " ".concat(example, " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
+        listItem.append(exampleDiv, listItemValue);
+        return listItem;
+      } catch (e) {
+        return '';
+      }
+    })));
+    return xml;
+  };
+
   /**
   * StackBlur - a fast almost Gaussian Blur For Canvas
-
-  In case you find this class useful - especially in commercial projects -
-  I am not totally unhappy for a small donation to my PayPal account
-  mario@quasimondo.de
-
-  Or support me on flattr:
-  https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript
-
+  *
+  * In case you find this class useful - especially in commercial projects -
+  * I am not totally unhappy for a small donation to my PayPal account
+  * mario@quasimondo.de
+  *
+  * Or support me on flattr:
+  * {@link https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript}
   * @module StackBlur
   * @version 0.5
   * @author Mario Klingemann
-  Contact: mario@quasimondo.com
-  Website: http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
-  Twitter: @quasimondo
-
+  * Contact: mario@quasimondo.com
+  * Website: {@link http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html}
+  * Twitter: @quasimondo
+  *
   * @copyright (c) 2010 Mario Klingemann
-
-  Permission is hereby granted, free of charge, to any person
-  obtaining a copy of this software and associated documentation
-  files (the "Software"), to deal in the Software without
-  restriction, including without limitation the rights to use,
-  copy, modify, merge, publish, distribute, sublicense, and/or sell
-  copies of the Software, and to permit persons to whom the
-  Software is furnished to do so, subject to the following
-  conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-  OTHER DEALINGS IN THE SOFTWARE.
+  *
+  * Permission is hereby granted, free of charge, to any person
+  * obtaining a copy of this software and associated documentation
+  * files (the "Software"), to deal in the Software without
+  * restriction, including without limitation the rights to use,
+  * copy, modify, merge, publish, distribute, sublicense, and/or sell
+  * copies of the Software, and to permit persons to whom the
+  * Software is furnished to do so, subject to the following
+  * conditions:
+  *
+  * The above copyright notice and this permission notice shall be
+  * included in all copies or substantial portions of the Software.
+  *
+  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+  * OTHER DEALINGS IN THE SOFTWARE.
   */
   var mulTable = [512, 512, 456, 512, 328, 456, 335, 512, 405, 328, 271, 456, 388, 335, 292, 512, 454, 405, 364, 328, 298, 271, 496, 456, 420, 388, 360, 335, 312, 292, 273, 512, 482, 454, 428, 405, 383, 364, 345, 328, 312, 298, 284, 271, 259, 496, 475, 456, 437, 420, 404, 388, 374, 360, 347, 335, 323, 312, 302, 292, 282, 273, 265, 512, 497, 482, 468, 454, 441, 428, 417, 405, 394, 383, 373, 364, 354, 345, 337, 328, 320, 312, 305, 298, 291, 284, 278, 271, 265, 259, 507, 496, 485, 475, 465, 456, 446, 437, 428, 420, 412, 404, 396, 388, 381, 374, 367, 360, 354, 347, 341, 335, 329, 323, 318, 312, 307, 302, 297, 292, 287, 282, 278, 273, 269, 265, 261, 512, 505, 497, 489, 482, 475, 468, 461, 454, 447, 441, 435, 428, 422, 417, 411, 405, 399, 394, 389, 383, 378, 373, 368, 364, 359, 354, 350, 345, 341, 337, 332, 328, 324, 320, 316, 312, 309, 305, 301, 298, 294, 291, 287, 284, 281, 278, 274, 271, 268, 265, 262, 259, 257, 507, 501, 496, 491, 485, 480, 475, 470, 465, 460, 456, 451, 446, 442, 437, 433, 428, 424, 420, 416, 412, 408, 404, 400, 396, 392, 388, 385, 381, 377, 374, 370, 367, 363, 360, 357, 354, 350, 347, 344, 341, 338, 335, 332, 329, 326, 323, 320, 318, 315, 312, 310, 307, 304, 302, 299, 297, 294, 292, 289, 287, 285, 282, 280, 278, 275, 273, 271, 269, 267, 265, 263, 261, 259];
   var shgTable = [9, 11, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24];
@@ -843,7 +848,20 @@ var svgEditorExtension_server_opensave = (function () {
     this.next = null;
   };
 
-  var canvasRGBA_ = processCanvasRGBA;
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+  var isNullish = function isNullish(val) {
+    return val === null || val === undefined;
+  };
+  /**
+  * @callback module:canvg.ForceRedraw
+  * @returns {boolean}
+  */
+
   /**
   * @typedef {PlainObject} module:canvg.CanvgOptions
   * @property {boolean} opts.ignoreMouse true => ignore mouse events
@@ -864,14 +882,15 @@ var svgEditorExtension_server_opensave = (function () {
   * with `<canvas>` elements.
   * @function module:canvg.canvg
   * @param {HTMLCanvasElement|string} target canvas element or the id of a canvas element
-  * @param {string|XMLDocument} s: svg string, url to svg file, or xml document
+  * @param {string|XMLDocument} s - svg string, url to svg file, or xml document
   * @param {module:canvg.CanvgOptions} [opts] Optional hash of options
   * @returns {Promise} All the function after the first render is completed with dom
   */
 
+
   var canvg = function canvg(target, s, opts) {
     // no parameters
-    if (target == null && s == null && opts == null) {
+    if (isNullish(target) && isNullish(s) && isNullish(opts)) {
       var svgTags = document.querySelectorAll('svg');
       return Promise.all(_toConsumableArray(svgTags).map(function (svgTag) {
         var c = document.createElement('canvas');
@@ -890,7 +909,7 @@ var svgEditorExtension_server_opensave = (function () {
     } // store class on canvas
 
 
-    if (target.svg != null) target.svg.stop();
+    if (!isNullish(target.svg)) target.svg.stop();
     var svg = build(opts || {}); // on i.e. 8 for flash canvas, we can't assign the property so check for it
 
     if (!(target.childNodes.length === 1 && target.childNodes[0].nodeName === 'OBJECT')) {
@@ -925,12 +944,15 @@ var svgEditorExtension_server_opensave = (function () {
     svg.FRAMERATE = 30;
     svg.MAX_VIRTUAL_PIXELS = 30000;
 
-    svg.log = function (msg) {};
+    svg.log = function (msg) {
+      /* */
+    };
 
     if (svg.opts.log === true && typeof console !== 'undefined') {
       svg.log = function (msg) {
         console.log(msg);
-      };
+      }; // eslint-disable-line no-console
+
     } // globals
 
 
@@ -971,7 +993,7 @@ var svgEditorExtension_server_opensave = (function () {
           return this.Current().height;
         },
         ComputeSize: function ComputeSize(d) {
-          if (d != null && typeof d === 'number') return d;
+          if (!isNullish(d) && typeof d === 'number') return d;
           if (d === 'x') return this.width();
           if (d === 'y') return this.height();
           return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
@@ -996,6 +1018,7 @@ var svgEditorExtension_server_opensave = (function () {
     svg.compressSpaces = function (s) {
       return s.replace(/[\s\r\t\n]+/gm, ' ');
     }; // ajax
+    // Todo: Replace with `fetch` and polyfill
 
 
     svg.ajax = function (url, asynch) {
@@ -1003,6 +1026,7 @@ var svgEditorExtension_server_opensave = (function () {
 
       if (asynch) {
         return new Promise(function (resolve, reject) {
+          // eslint-disable-line promise/avoid-new
           var req = AJAX.open('GET', url, true);
           req.addEventListener('load', function () {
             resolve(AJAX.responseText);
@@ -1021,13 +1045,13 @@ var svgEditorExtension_server_opensave = (function () {
       if (window.DOMParser) {
         var parser = new DOMParser();
         return parser.parseFromString(xml, 'text/xml');
-      } else {
-        xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
-        var xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
-        xmlDoc.async = 'false';
-        xmlDoc.loadXML(xml);
-        return xmlDoc;
       }
+
+      xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
+      var xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
+      xmlDoc.async = 'false';
+      xmlDoc.loadXML(xml);
+      return xmlDoc;
     }; // text extensions
     // get the text baseline
 
@@ -1064,7 +1088,7 @@ var svgEditorExtension_server_opensave = (function () {
       }, {
         key: "hasValue",
         value: function hasValue() {
-          return this.value != null && this.value !== '';
+          return !isNullish(this.value) && this.value !== '';
         } // return the numerical value of the property
 
       }, {
@@ -1073,8 +1097,8 @@ var svgEditorExtension_server_opensave = (function () {
           if (!this.hasValue()) return 0;
           var n = parseFloat(this.value);
 
-          if ((this.value + '').match(/%$/)) {
-            n = n / 100.0;
+          if (String(this.value).match(/%$/)) {
+            n /= 100.0;
           }
 
           return n;
@@ -1098,7 +1122,7 @@ var svgEditorExtension_server_opensave = (function () {
         value: function addOpacity(opacityProp) {
           var newValue = this.value;
 
-          if (opacityProp.value != null && opacityProp.value !== '' && typeof this.value === 'string') {
+          if (!isNullish(opacityProp.value) && opacityProp.value !== '' && typeof this.value === 'string') {
             // can only add opacity to colors, not patterns
             var color = new RGBColor(this.value);
 
@@ -1136,12 +1160,12 @@ var svgEditorExtension_server_opensave = (function () {
         value: function getFillStyleDefinition(e, opacityProp) {
           var def = this.getDefinition(); // gradient
 
-          if (def != null && def.createGradient) {
+          if (!isNullish(def) && def.createGradient) {
             return def.createGradient(svg.ctx, e, opacityProp);
           } // pattern
 
 
-          if (def != null && def.createPattern) {
+          if (!isNullish(def) && def.createPattern) {
             if (def.getHrefAttribute().hasValue()) {
               var pt = def.attribute('patternTransform');
               def = def.getHrefAttribute().getDefinition();
@@ -1173,15 +1197,14 @@ var svgEditorExtension_server_opensave = (function () {
       }, {
         key: "getUnits",
         value: function getUnits() {
-          var s = this.value + '';
-          return s.replace(/[0-9.-]/g, '');
+          return String(this.value).replace(/[0-9.-]/g, '');
         } // get the length as pixels
 
       }, {
         key: "toPixels",
         value: function toPixels(viewPort, processPercent) {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/em$/)) return this.numValue() * this.getEM(viewPort);
           if (s.match(/ex$/)) return this.numValue() * this.getEM(viewPort) / 2.0;
           if (s.match(/px$/)) return this.numValue();
@@ -1201,7 +1224,7 @@ var svgEditorExtension_server_opensave = (function () {
         key: "toMilliseconds",
         value: function toMilliseconds() {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/s$/)) return this.numValue() * 1000;
           if (s.match(/ms$/)) return this.numValue();
           return this.numValue();
@@ -1212,7 +1235,7 @@ var svgEditorExtension_server_opensave = (function () {
         key: "toRadians",
         value: function toRadians() {
           if (!this.hasValue()) return 0;
-          var s = this.value + '';
+          var s = String(this.value);
           if (s.match(/deg$/)) return this.numValue() * (Math.PI / 180.0);
           if (s.match(/grad$/)) return this.numValue() * (Math.PI / 200.0);
           if (s.match(/rad$/)) return this.numValue();
@@ -1235,7 +1258,7 @@ var svgEditorExtension_server_opensave = (function () {
       Variants: 'normal|small-caps|inherit',
       Weights: 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit',
       CreateFont: function CreateFont(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
-        var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
+        var f = !isNullish(inherit) ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
         return {
           fontFamily: fontFamily || f.fontFamily,
           fontSize: fontSize || f.fontSize,
@@ -1251,7 +1274,7 @@ var svgEditorExtension_server_opensave = (function () {
         var _this = this;
 
         var f = {};
-        var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
+        var ds = svg.trim(svg.compressSpaces(s || '')).split(' ');
         var set = {
           fontSize: false,
           fontStyle: false,
@@ -1259,7 +1282,7 @@ var svgEditorExtension_server_opensave = (function () {
           fontVariant: false
         };
         var ff = '';
-        d.forEach(function (d) {
+        ds.forEach(function (d) {
           if (!set.fontStyle && _this.Styles.includes(d)) {
             if (d !== 'inherit') {
               f.fontStyle = d;
@@ -1284,10 +1307,8 @@ var svgEditorExtension_server_opensave = (function () {
             }
 
             set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
-          } else {
-            if (d !== 'inherit') {
-              ff += d;
-            }
+          } else if (d !== 'inherit') {
+            ff += d;
           }
         });
 
@@ -1301,8 +1322,8 @@ var svgEditorExtension_server_opensave = (function () {
 
     svg.ToNumberArray = function (s) {
       var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
-      return a.map(function (a) {
-        return parseFloat(a);
+      return a.map(function (_a) {
+        return parseFloat(_a);
       });
     };
 
@@ -1389,7 +1410,7 @@ var svgEditorExtension_server_opensave = (function () {
       }, {
         key: "addPoint",
         value: function addPoint(x, y) {
-          if (x != null) {
+          if (!isNullish(x)) {
             if (isNaN(this.x1) || isNaN(this.x2)) {
               this.x1 = x;
               this.x2 = x;
@@ -1399,7 +1420,7 @@ var svgEditorExtension_server_opensave = (function () {
             if (x > this.x2) this.x2 = x;
           }
 
-          if (y != null) {
+          if (!isNullish(y)) {
             if (isNaN(this.y1) || isNaN(this.y2)) {
               this.y1 = y;
               this.y2 = y;
@@ -1553,9 +1574,10 @@ var svgEditorExtension_server_opensave = (function () {
             };
 
             this.applyToPoint = function (p) {
-              var a = this.angle.toRadians();
+              var _a = this.angle.toRadians();
+
               p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
-              p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
+              p.applyTransform([Math.cos(_a), Math.sin(_a), -Math.sin(_a), Math.cos(_a), 0, 0]);
               p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
             };
           },
@@ -1721,7 +1743,7 @@ var svgEditorExtension_server_opensave = (function () {
 
       if (align === 'none') ctx.scale(scaleX, scaleY);else if (meetOrSlice === 'meet') ctx.scale(scaleMin, scaleMin);else if (meetOrSlice === 'slice') ctx.scale(scaleMax, scaleMax); // translate
 
-      ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
+      ctx.translate(isNullish(minX) ? 0 : -minX, isNullish(minY) ? 0 : -minY);
     }; // elements
 
 
@@ -1736,13 +1758,14 @@ var svgEditorExtension_server_opensave = (function () {
 
         _classCallCheck(this, _class4);
 
-        this.captureTextNodes = arguments[1]; // Argument from inheriting class
+        // Argument from inheriting class
+        this.captureTextNodes = arguments[1]; // eslint-disable-line prefer-rest-params
 
         this.attributes = {};
         this.styles = {};
         this.children = [];
 
-        if (node != null && node.nodeType === 1) {
+        if (!isNullish(node) && node.nodeType === 1) {
           // ELEMENT_NODE
           // add children
           _toConsumableArray(node.childNodes).forEach(function (childNode) {
@@ -1771,10 +1794,14 @@ var svgEditorExtension_server_opensave = (function () {
 
           var styles = svg.Styles[node.nodeName];
 
-          if (styles != null) {
-            for (var name in styles) {
-              this.styles[name] = styles[name];
-            }
+          if (!isNullish(styles)) {
+            Object.entries(styles).forEach(function (_ref2) {
+              var _ref3 = _slicedToArray(_ref2, 2),
+                  name = _ref3[0],
+                  styleValue = _ref3[1];
+
+              _this7.styles[name] = styleValue;
+            });
           } // add class styles
 
 
@@ -1783,18 +1810,26 @@ var svgEditorExtension_server_opensave = (function () {
             classes.forEach(function (clss) {
               styles = svg.Styles['.' + clss];
 
-              if (styles != null) {
-                for (var _name in styles) {
-                  _this7.styles[_name] = styles[_name];
-                }
+              if (!isNullish(styles)) {
+                Object.entries(styles).forEach(function (_ref4) {
+                  var _ref5 = _slicedToArray(_ref4, 2),
+                      name = _ref5[0],
+                      styleValue = _ref5[1];
+
+                  _this7.styles[name] = styleValue;
+                });
               }
 
               styles = svg.Styles[node.nodeName + '.' + clss];
 
-              if (styles != null) {
-                for (var _name2 in styles) {
-                  _this7.styles[_name2] = styles[_name2];
-                }
+              if (!isNullish(styles)) {
+                Object.entries(styles).forEach(function (_ref6) {
+                  var _ref7 = _slicedToArray(_ref6, 2),
+                      name = _ref7[0],
+                      styleValue = _ref7[1];
+
+                  _this7.styles[name] = styleValue;
+                });
               }
             });
           } // add id styles
@@ -1803,10 +1838,14 @@ var svgEditorExtension_server_opensave = (function () {
           if (this.attribute('id').hasValue()) {
             var _styles = svg.Styles['#' + this.attribute('id').value];
 
-            if (_styles != null) {
-              for (var _name3 in _styles) {
-                this.styles[_name3] = _styles[_name3];
-              }
+            if (!isNullish(_styles)) {
+              Object.entries(_styles).forEach(function (_ref8) {
+                var _ref9 = _slicedToArray(_ref8, 2),
+                    name = _ref9[0],
+                    styleValue = _ref9[1];
+
+                _this7.styles[name] = styleValue;
+              });
             }
           } // add inline styles
 
@@ -1817,19 +1856,19 @@ var svgEditorExtension_server_opensave = (function () {
             _styles2.forEach(function (style) {
               if (svg.trim(style) !== '') {
                 var _style$split = style.split(':'),
-                    _name4 = _style$split.name,
+                    name = _style$split.name,
                     value = _style$split.value;
 
-                _name4 = svg.trim(_name4);
+                name = svg.trim(name);
                 value = svg.trim(value);
-                _this7.styles[_name4] = new svg.Property(_name4, value);
+                _this7.styles[name] = new svg.Property(name, value);
               }
             });
           } // add id
 
 
           if (this.attribute('id').hasValue()) {
-            if (svg.Definitions[this.attribute('id').value] == null) {
+            if (isNullish(svg.Definitions[this.attribute('id').value])) {
               svg.Definitions[this.attribute('id').value] = this;
             }
           }
@@ -1841,7 +1880,7 @@ var svgEditorExtension_server_opensave = (function () {
         key: "attribute",
         value: function attribute(name, createIfNotExists) {
           var a = this.attributes[name];
-          if (a != null) return a;
+          if (!isNullish(a)) return a;
 
           if (createIfNotExists === true) {
             a = new svg.Property(name, '');
@@ -1866,10 +1905,10 @@ var svgEditorExtension_server_opensave = (function () {
         key: "style",
         value: function style(name, createIfNotExists, skipAncestors) {
           var s = this.styles[name];
-          if (s != null) return s;
+          if (!isNullish(s)) return s;
           var a = this.attribute(name);
 
-          if (a != null && a.hasValue()) {
+          if (!isNullish(a) && a.hasValue()) {
             this.styles[name] = a; // move up to me to cache
 
             return a;
@@ -1878,10 +1917,10 @@ var svgEditorExtension_server_opensave = (function () {
           if (skipAncestors !== true) {
             var p = this.parent;
 
-            if (p != null) {
+            if (!isNullish(p)) {
               var ps = p.style(name);
 
-              if (ps != null && ps.hasValue()) {
+              if (!isNullish(ps) && ps.hasValue()) {
                 return ps;
               }
             }
@@ -1907,11 +1946,11 @@ var svgEditorExtension_server_opensave = (function () {
           if (this.attribute('mask').hasValue()) {
             // mask
             var mask = this.attribute('mask').getDefinition();
-            if (mask != null) mask.apply(ctx, this);
+            if (!isNullish(mask)) mask.apply(ctx, this);
           } else if (this.style('filter').hasValue()) {
             // filter
             var filter = this.style('filter').getDefinition();
-            if (filter != null) filter.apply(ctx, this);
+            if (!isNullish(filter)) filter.apply(ctx, this);
           } else {
             this.setContext(ctx);
             this.renderChildren(ctx);
@@ -1970,7 +2009,7 @@ var svgEditorExtension_server_opensave = (function () {
           // fill
           if (this.style('fill').isUrlDefinition()) {
             var fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
-            if (fs != null) ctx.fillStyle = fs;
+            if (!isNullish(fs)) ctx.fillStyle = fs;
           } else if (this.style('fill').hasValue()) {
             var fillStyle = this.style('fill');
             if (fillStyle.value === 'currentColor') fillStyle.value = this.style('color').value;
@@ -1988,7 +2027,7 @@ var svgEditorExtension_server_opensave = (function () {
           if (this.style('stroke').isUrlDefinition()) {
             var _fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
 
-            if (_fs != null) ctx.strokeStyle = _fs;
+            if (!isNullish(_fs)) ctx.strokeStyle = _fs;
           } else if (this.style('stroke').hasValue()) {
             var strokeStyle = this.style('stroke');
             if (strokeStyle.value === 'currentColor') strokeStyle.value = this.style('color').value;
@@ -2047,7 +2086,7 @@ var svgEditorExtension_server_opensave = (function () {
 
           if (this.style('clip-path', false, true).hasValue()) {
             var clip = this.style('clip-path', false, true).getDefinition();
-            if (clip != null) clip.apply(ctx);
+            if (!isNullish(clip)) clip.apply(ctx);
           } // opacity
 
 
@@ -2074,7 +2113,7 @@ var svgEditorExtension_server_opensave = (function () {
       _createClass(_class6, [{
         key: "path",
         value: function path(ctx) {
-          if (ctx != null) ctx.beginPath();
+          if (!isNullish(ctx)) ctx.beginPath();
           return new svg.BoundingBox();
         }
       }, {
@@ -2094,7 +2133,7 @@ var svgEditorExtension_server_opensave = (function () {
           if (ctx.strokeStyle !== '') ctx.stroke();
           var markers = this.getMarkers();
 
-          if (markers != null) {
+          if (!isNullish(markers)) {
             if (this.style('marker-start').isUrlDefinition()) {
               var marker = this.style('marker-start').getDefinition();
               marker.render(ctx, markers[0][0], markers[0][1]);
@@ -2239,7 +2278,7 @@ var svgEditorExtension_server_opensave = (function () {
           rx = Math.min(rx, width / 2.0);
           ry = Math.min(ry, height / 2.0);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(x + rx, y);
             ctx.lineTo(x + width - rx, y);
@@ -2279,7 +2318,7 @@ var svgEditorExtension_server_opensave = (function () {
           var cy = this.attribute('cy').toPixels('y');
           var r = this.attribute('r').toPixels();
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
             ctx.closePath();
@@ -2314,7 +2353,7 @@ var svgEditorExtension_server_opensave = (function () {
           var cx = this.attribute('cx').toPixels('x');
           var cy = this.attribute('cy').toPixels('y');
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(cx, cy - ry);
             ctx.bezierCurveTo(cx + KAPPA * rx, cy - ry, cx + rx, cy - KAPPA * ry, cx + rx, cy);
@@ -2353,7 +2392,7 @@ var svgEditorExtension_server_opensave = (function () {
         value: function path(ctx) {
           var points = this.getPoints();
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(points[0].x, points[0].y);
             ctx.lineTo(points[1].x, points[1].y);
@@ -2397,7 +2436,7 @@ var svgEditorExtension_server_opensave = (function () {
               y = _this$points$.y;
           var bb = new svg.BoundingBox(x, y);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.beginPath();
             ctx.moveTo(x, y);
           }
@@ -2407,7 +2446,7 @@ var svgEditorExtension_server_opensave = (function () {
                 _x = _this$points$i.x,
                 _y = _this$points$i.y;
             bb.addPoint(_x, _y);
-            if (ctx != null) ctx.lineTo(_x, _y);
+            if (!isNullish(ctx)) ctx.lineTo(_x, _y);
           }
 
           return bb;
@@ -2446,7 +2485,7 @@ var svgEditorExtension_server_opensave = (function () {
         value: function path(ctx) {
           var bb = _get(_getPrototypeOf(_class13.prototype), "path", this).call(this, ctx);
 
-          if (ctx != null) {
+          if (!isNullish(ctx)) {
             ctx.lineTo(this.points[0].x, this.points[0].y);
             ctx.closePath();
           }
@@ -2502,7 +2541,7 @@ var svgEditorExtension_server_opensave = (function () {
           },
           isCommandOrEnd: function isCommandOrEnd() {
             if (this.isEnd()) return true;
-            return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
+            return !isNullish(this.tokens[this.i + 1].match(/^[A-Za-z]$/));
           },
           isRelativeCommand: function isRelativeCommand() {
             switch (this.command) {
@@ -2565,11 +2604,11 @@ var svgEditorExtension_server_opensave = (function () {
           },
           addMarker: function addMarker(p, from, priorTo) {
             // if the last angle isn't filled in because we didn't have this point yet ...
-            if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length - 1] == null) {
+            if (!isNullish(priorTo) && this.angles.length > 0 && isNullish(this.angles[this.angles.length - 1])) {
               this.angles[this.angles.length - 1] = this.points[this.points.length - 1].angleTo(priorTo);
             }
 
-            this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
+            this.addMarkerAngle(p, isNullish(from) ? null : from.angleTo(p));
           },
           addMarkerAngle: function addMarkerAngle(p, a) {
             this.points.push(p);
@@ -2580,9 +2619,9 @@ var svgEditorExtension_server_opensave = (function () {
           },
           getMarkerAngles: function getMarkerAngles() {
             for (var i = 0; i < this.angles.length; i++) {
-              if (this.angles[i] == null) {
+              if (isNullish(this.angles[i])) {
                 for (var j = i + 1; j < this.angles.length; j++) {
-                  if (this.angles[j] != null) {
+                  if (!isNullish(this.angles[j])) {
                     this.angles[i] = this.angles[j];
                     break;
                   }
@@ -2602,7 +2641,7 @@ var svgEditorExtension_server_opensave = (function () {
           var pp = this.PathParser;
           pp.reset();
           var bb = new svg.BoundingBox();
-          if (ctx != null) ctx.beginPath();
+          if (!isNullish(ctx)) ctx.beginPath();
 
           while (!pp.isEnd()) {
             pp.nextCommand();
@@ -2610,22 +2649,24 @@ var svgEditorExtension_server_opensave = (function () {
             switch (pp.command) {
               case 'M':
               case 'm':
-                var p = pp.getAsCurrentPoint();
-                pp.addMarker(p);
-                bb.addPoint(p.x, p.y);
-                if (ctx != null) ctx.moveTo(p.x, p.y);
-                pp.start = pp.current;
+                {
+                  var p = pp.getAsCurrentPoint();
+                  pp.addMarker(p);
+                  bb.addPoint(p.x, p.y);
+                  if (!isNullish(ctx)) ctx.moveTo(p.x, p.y);
+                  pp.start = pp.current;
 
-                while (!pp.isCommandOrEnd()) {
-                  var _p = pp.getAsCurrentPoint();
+                  while (!pp.isCommandOrEnd()) {
+                    var _p = pp.getAsCurrentPoint();
 
-                  pp.addMarker(_p, pp.start);
-                  bb.addPoint(_p.x, _p.y);
-                  if (ctx != null) ctx.lineTo(_p.x, _p.y);
+                    pp.addMarker(_p, pp.start);
+                    bb.addPoint(_p.x, _p.y);
+                    if (!isNullish(ctx)) ctx.lineTo(_p.x, _p.y);
+                  }
+
+                  break;
                 }
 
-                break;
-
               case 'L':
               case 'l':
                 while (!pp.isCommandOrEnd()) {
@@ -2635,7 +2676,7 @@ var svgEditorExtension_server_opensave = (function () {
 
                   pp.addMarker(_p2, c);
                   bb.addPoint(_p2.x, _p2.y);
-                  if (ctx != null) ctx.lineTo(_p2.x, _p2.y);
+                  if (!isNullish(ctx)) ctx.lineTo(_p2.x, _p2.y);
                 }
 
                 break;
@@ -2647,7 +2688,7 @@ var svgEditorExtension_server_opensave = (function () {
                   pp.addMarker(newP, pp.current);
                   pp.current = newP;
                   bb.addPoint(pp.current.x, pp.current.y);
-                  if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+                  if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
                 }
 
                 break;
@@ -2660,7 +2701,7 @@ var svgEditorExtension_server_opensave = (function () {
                   pp.addMarker(_newP, pp.current);
                   pp.current = _newP;
                   bb.addPoint(pp.current.x, pp.current.y);
-                  if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+                  if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
                 }
 
                 break;
@@ -2674,7 +2715,7 @@ var svgEditorExtension_server_opensave = (function () {
                   var cp = pp.getAsCurrentPoint();
                   pp.addMarker(cp, cntrl, p1);
                   bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
-                  if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+                  if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
                 }
 
                 break;
@@ -2692,7 +2733,7 @@ var svgEditorExtension_server_opensave = (function () {
 
                   pp.addMarker(_cp, _cntrl, _p3);
                   bb.addBezierCurve(_curr.x, _curr.y, _p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
-                  if (ctx != null) ctx.bezierCurveTo(_p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
+                  if (!isNullish(ctx)) ctx.bezierCurveTo(_p3.x, _p3.y, _cntrl.x, _cntrl.y, _cp.x, _cp.y);
                 }
 
                 break;
@@ -2708,7 +2749,7 @@ var svgEditorExtension_server_opensave = (function () {
 
                   pp.addMarker(_cp2, _cntrl2, _cntrl2);
                   bb.addQuadraticCurve(_curr2.x, _curr2.y, _cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
-                  if (ctx != null) ctx.quadraticCurveTo(_cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
+                  if (!isNullish(ctx)) ctx.quadraticCurveTo(_cntrl2.x, _cntrl2.y, _cp2.x, _cp2.y);
                 }
 
                 break;
@@ -2726,7 +2767,7 @@ var svgEditorExtension_server_opensave = (function () {
 
                   pp.addMarker(_cp3, _cntrl3, _cntrl3);
                   bb.addQuadraticCurve(_curr3.x, _curr3.y, _cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
-                  if (ctx != null) ctx.quadraticCurveTo(_cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
+                  if (!isNullish(ctx)) ctx.quadraticCurveTo(_cntrl3.x, _cntrl3.y, _cp3.x, _cp3.y);
                 }
 
                 break;
@@ -2790,7 +2831,7 @@ var svgEditorExtension_server_opensave = (function () {
                   pp.addMarkerAngle(cp, ah - dir * Math.PI);
                   bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
 
-                  if (ctx != null) {
+                  if (!isNullish(ctx)) {
                     var _r = rx > ry ? rx : ry;
 
                     var sx = rx > ry ? 1 : rx / ry;
@@ -2813,7 +2854,7 @@ var svgEditorExtension_server_opensave = (function () {
 
               case 'Z':
               case 'z':
-                if (ctx != null) ctx.closePath();
+                if (!isNullish(ctx)) ctx.closePath();
                 pp.current = pp.start;
             }
           }
@@ -2854,10 +2895,10 @@ var svgEditorExtension_server_opensave = (function () {
           var height = this.attribute('height').toPixels('y', true); // render me using a temporary svg element
 
           var tempSvg = new svg.Element.svg();
-          tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
-          tempSvg.attributes['width'] = new svg.Property('width', width + 'px');
-          tempSvg.attributes['height'] = new svg.Property('height', height + 'px');
-          tempSvg.attributes['transform'] = new svg.Property('transform', this.attribute('patternTransform').value);
+          tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
+          tempSvg.attributes.width = new svg.Property('width', width + 'px');
+          tempSvg.attributes.height = new svg.Property('height', height + 'px');
+          tempSvg.attributes.transform = new svg.Property('transform', this.attribute('patternTransform').value);
           tempSvg.children = this.children;
           var c = document.createElement('canvas');
           c.width = width;
@@ -2907,13 +2948,13 @@ var svgEditorExtension_server_opensave = (function () {
           ctx.save(); // render me using a temporary svg element
 
           var tempSvg = new svg.Element.svg();
-          tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
-          tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
-          tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
-          tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
-          tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
-          tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
-          tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
+          tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
+          tempSvg.attributes.refX = new svg.Property('refX', this.attribute('refX').value);
+          tempSvg.attributes.refY = new svg.Property('refY', this.attribute('refY').value);
+          tempSvg.attributes.width = new svg.Property('width', this.attribute('markerWidth').value);
+          tempSvg.attributes.height = new svg.Property('height', this.attribute('markerHeight').value);
+          tempSvg.attributes.fill = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
+          tempSvg.attributes.stroke = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
           tempSvg.children = this.children;
           tempSvg.render(ctx);
           ctx.restore();
@@ -2990,10 +3031,10 @@ var svgEditorExtension_server_opensave = (function () {
           };
 
           var g = this.getGradient(ctx, element);
-          if (g == null) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
-          stopsContainer.stops.forEach(function (_ref2) {
-            var offset = _ref2.offset,
-                color = _ref2.color;
+          if (isNullish(g)) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
+          stopsContainer.stops.forEach(function (_ref10) {
+            var offset = _ref10.offset,
+                color = _ref10.color;
             g.addColorStop(offset, addParentOpacity(color));
           });
 
@@ -3001,18 +3042,18 @@ var svgEditorExtension_server_opensave = (function () {
             // render as transformed pattern on temporary canvas
             var rootView = svg.ViewPort.viewPorts[0];
             var rect = new svg.Element.rect();
-            rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
-            rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
-            rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
-            rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
+            rect.attributes.x = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
+            rect.attributes.y = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
+            rect.attributes.width = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
+            rect.attributes.height = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
             var group = new svg.Element.g();
-            group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
+            group.attributes.transform = new svg.Property('transform', this.attribute('gradientTransform').value);
             group.children = [rect];
             var tempSvg = new svg.Element.svg();
-            tempSvg.attributes['x'] = new svg.Property('x', 0);
-            tempSvg.attributes['y'] = new svg.Property('y', 0);
-            tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
-            tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
+            tempSvg.attributes.x = new svg.Property('x', 0);
+            tempSvg.attributes.y = new svg.Property('y', 0);
+            tempSvg.attributes.width = new svg.Property('width', rootView.width);
+            tempSvg.attributes.height = new svg.Property('height', rootView.height);
             tempSvg.children = [group];
             var c = document.createElement('canvas');
             c.width = rootView.width;
@@ -3185,7 +3226,7 @@ var svgEditorExtension_server_opensave = (function () {
         key: "update",
         value: function update(delta) {
           // set initial value
-          if (this.initialValue == null) {
+          if (isNullish(this.initialValue)) {
             this.initialValue = this.getProperty().value;
             this.initialUnits = this.getProperty().getUnits();
           } // if we're past the end time
@@ -3303,7 +3344,7 @@ var svgEditorExtension_server_opensave = (function () {
             var r = from.r + (to.r - from.r) * p.progress;
             var g = from.g + (to.g - from.g) * p.progress;
             var b = from.b + (to.b - from.b) * p.progress;
-            return 'rgb(' + parseInt(r, 10) + ',' + parseInt(g, 10) + ',' + parseInt(b, 10) + ')';
+            return 'rgb(' + parseInt(r) + ',' + parseInt(g) + ',' + parseInt(b) + ')';
           }
 
           return this.attribute('from').value;
@@ -3472,8 +3513,8 @@ var svgEditorExtension_server_opensave = (function () {
           _get(_getPrototypeOf(_class30.prototype), "setContext", this).call(this, ctx);
 
           var textBaseline = this.style('dominant-baseline').toTextBaseline();
-          if (textBaseline == null) textBaseline = this.style('alignment-baseline').toTextBaseline();
-          if (textBaseline != null) ctx.textBaseline = textBaseline;
+          if (isNullish(textBaseline)) textBaseline = this.style('alignment-baseline').toTextBaseline();
+          if (!isNullish(textBaseline)) ctx.textBaseline = textBaseline;
         }
       }, {
         key: "getBoundingBox",
@@ -3543,8 +3584,8 @@ var svgEditorExtension_server_opensave = (function () {
           this.y = child.y;
           child.render(ctx);
 
-          for (var _i = 0; _i < child.children.length; _i++) {
-            this.renderChild(ctx, child, _i);
+          for (var j = 0; j < child.children.length; j++) {
+            this.renderChild(ctx, child, j);
           }
         }
       }]);
@@ -3578,13 +3619,13 @@ var svgEditorExtension_server_opensave = (function () {
 
             if (typeof font.glyphs[c] !== 'undefined') {
               glyph = font.glyphs[c][arabicForm];
-              if (glyph == null && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
+              if (isNullish(glyph) && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
             }
           } else {
             glyph = font.glyphs[c];
           }
 
-          if (glyph == null) glyph = font.missingGlyph;
+          if (isNullish(glyph)) glyph = font.missingGlyph;
           return glyph;
         }
       }, {
@@ -3592,7 +3633,7 @@ var svgEditorExtension_server_opensave = (function () {
         value: function renderChildren(ctx) {
           var customFont = this.parent.style('font-family').getDefinition();
 
-          if (customFont != null) {
+          if (!isNullish(customFont)) {
             var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
             var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
             var text = this.getText();
@@ -3643,7 +3684,7 @@ var svgEditorExtension_server_opensave = (function () {
         value: function measureText(ctx) {
           var customFont = this.parent.style('font-family').getDefinition();
 
-          if (customFont != null) {
+          if (!isNullish(customFont)) {
             var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
             var measure = 0;
             var text = this.getText();
@@ -3720,7 +3761,8 @@ var svgEditorExtension_server_opensave = (function () {
         key: "getText",
         value: function getText() {
           var element = this.getHrefAttribute().getDefinition();
-          if (element != null) return element.children[0].getText();
+          if (!isNullish(element)) return element.children[0].getText();
+          return undefined;
         }
       }]);
 
@@ -3819,22 +3861,25 @@ var svgEditorExtension_server_opensave = (function () {
             _this20.img.crossOrigin = 'Anonymous';
           }
 
-          var self = _assertThisInitialized(_assertThisInitialized(_this20));
-
           _this20.img.onload = function () {
-            self.loaded = true;
+            _this20.loaded = true;
           };
 
           _this20.img.onerror = function () {
             svg.log('ERROR: image "' + href + '" not found');
-            self.loaded = true;
+            _this20.loaded = true;
           };
 
           _this20.img.src = href;
         } else {
           svg.ajax(href, true).then(function (img) {
+            // eslint-disable-line promise/prefer-await-to-then, promise/always-return
             _this20.img = img;
             _this20.loaded = true;
+          }).catch(function (err) {
+            // eslint-disable-line promise/prefer-await-to-callbacks
+            _this20.erred = true;
+            console.error('Ajax error for canvg', err); // eslint-disable-line no-console
           });
         }
 
@@ -3937,8 +3982,8 @@ var svgEditorExtension_server_opensave = (function () {
 
         var css = '';
 
-        _toConsumableArray(node.childNodes).forEach(function (_ref3) {
-          var nodeValue = _ref3.nodeValue;
+        _toConsumableArray(node.childNodes).forEach(function (_ref11) {
+          var nodeValue = _ref11.nodeValue;
           css += nodeValue;
         });
 
@@ -3966,7 +4011,7 @@ var svgEditorExtension_server_opensave = (function () {
                   var name = cssProp.substr(0, prop);
                   var value = cssProp.substr(prop + 1, cssProp.length - prop);
 
-                  if (name != null && value != null) {
+                  if (!isNullish(name) && !isNullish(value)) {
                     props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
                   }
                 });
@@ -3974,7 +4019,7 @@ var svgEditorExtension_server_opensave = (function () {
 
                 if (cssClass === '@font-face') {
                   var fontFamily = props['font-family'].value.replace(/"/g, '');
-                  var srcs = props['src'].value.split(',');
+                  var srcs = props.src.value.split(',');
                   srcs.forEach(function (src) {
                     if (src.includes('format("svg")')) {
                       var urlStart = src.indexOf('url');
@@ -4029,36 +4074,37 @@ var svgEditorExtension_server_opensave = (function () {
         key: "path",
         value: function path(ctx) {
           var element = this._el;
-          if (element != null) element.path(ctx);
+          if (!isNullish(element)) element.path(ctx);
         }
       }, {
         key: "getBoundingBox",
         value: function getBoundingBox() {
           var element = this._el;
-          if (element != null) return element.getBoundingBox();
+          if (!isNullish(element)) return element.getBoundingBox();
+          return undefined;
         }
       }, {
         key: "renderChildren",
         value: function renderChildren(ctx) {
           var element = this._el;
 
-          if (element != null) {
+          if (!isNullish(element)) {
             var tempSvg = element;
 
             if (element.type === 'symbol') {
               // render me using a temporary svg element in symbol cases (https://www.w3.org/TR/SVG/struct.html#UseElement)
               tempSvg = new svg.Element.svg();
               tempSvg.type = 'svg';
-              tempSvg.attributes['viewBox'] = new svg.Property('viewBox', element.attribute('viewBox').value);
-              tempSvg.attributes['preserveAspectRatio'] = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
-              tempSvg.attributes['overflow'] = new svg.Property('overflow', element.attribute('overflow').value);
+              tempSvg.attributes.viewBox = new svg.Property('viewBox', element.attribute('viewBox').value);
+              tempSvg.attributes.preserveAspectRatio = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
+              tempSvg.attributes.overflow = new svg.Property('overflow', element.attribute('overflow').value);
               tempSvg.children = element.children;
             }
 
             if (tempSvg.type === 'svg') {
               // if symbol or svg, inherit width/height from me
-              if (this.attribute('width').hasValue()) tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
-              if (this.attribute('height').hasValue()) tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
+              if (this.attribute('width').hasValue()) tempSvg.attributes.width = new svg.Property('width', this.attribute('width').value);
+              if (this.attribute('height').hasValue()) tempSvg.attributes.height = new svg.Property('height', this.attribute('height').value);
             }
 
             var oldParent = tempSvg.parent;
@@ -4270,10 +4316,31 @@ var svgEditorExtension_server_opensave = (function () {
 
       return _class44;
     }(svg.Element.ElementBase);
+    /**
+    * @param {Uint8ClampedArray} img
+    * @param {Integer} x
+    * @param {Integer} y
+    * @param {Float} width
+    * @param {Float} height
+    * @param {Integer} rgba
+    * @returns {undefined}
+    */
+
 
     function imGet(img, x, y, width, height, rgba) {
       return img[y * width * 4 + x * 4 + rgba];
     }
+    /**
+    * @param {Uint8ClampedArray} img
+    * @param {Integer} x
+    * @param {Integer} y
+    * @param {Float} width
+    * @param {Float} height
+    * @param {Integer} rgba
+    * @param {Float} val
+    * @returns {undefined}
+    */
+
 
     function imSet(img, x, y, width, height, rgba, val) {
       img[y * width * 4 + x * 4 + rgba] = val;
@@ -4295,19 +4362,23 @@ var svgEditorExtension_server_opensave = (function () {
         switch (_this23.attribute('type').valueOrDefault('matrix')) {
           // https://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
           case 'saturate':
-            var s = matrix[0];
-            matrix = [0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
-            break;
+            {
+              var s = matrix[0];
+              matrix = [0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0, 0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
+              break;
+            }
 
           case 'hueRotate':
-            var a = matrix[0] * Math.PI / 180.0;
+            {
+              var a = matrix[0] * Math.PI / 180.0;
 
-            var c = function c(m1, m2, m3) {
-              return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
-            };
+              var c = function c(m1, m2, m3) {
+                return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
+              };
 
-            matrix = [c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0, c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0, c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
-            break;
+              matrix = [c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0, c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0, c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1];
+              break;
+            }
 
           case 'luminanceToAlpha':
             matrix = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.2125, 0.7154, 0.0721, 0, 0, 0, 0, 0, 0, 1];
@@ -4331,16 +4402,16 @@ var svgEditorExtension_server_opensave = (function () {
 
           var srcData = ctx.getImageData(0, 0, width, height);
 
-          for (var _y2 = 0; _y2 < height; _y2++) {
-            for (var _x2 = 0; _x2 < width; _x2++) {
-              var r = imGet(srcData.data, _x2, _y2, width, height, 0);
-              var g = imGet(srcData.data, _x2, _y2, width, height, 1);
-              var b = imGet(srcData.data, _x2, _y2, width, height, 2);
-              var a = imGet(srcData.data, _x2, _y2, width, height, 3);
-              imSet(srcData.data, _x2, _y2, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
-              imSet(srcData.data, _x2, _y2, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
+          for (var _y = 0; _y < height; _y++) {
+            for (var _x = 0; _x < width; _x++) {
+              var r = imGet(srcData.data, _x, _y, width, height, 0);
+              var g = imGet(srcData.data, _x, _y, width, height, 1);
+              var b = imGet(srcData.data, _x, _y, width, height, 2);
+              var a = imGet(srcData.data, _x, _y, width, height, 3);
+              imSet(srcData.data, _x, _y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
+              imSet(srcData.data, _x, _y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
+              imSet(srcData.data, _x, _y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
+              imSet(srcData.data, _x, _y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
             }
           }
 
@@ -4371,17 +4442,12 @@ var svgEditorExtension_server_opensave = (function () {
       _createClass(_class46, [{
         key: "apply",
         value: function apply(ctx, x, y, width, height) {
-          if (typeof canvasRGBA_ !== 'function') {
-            svg.log('ERROR: The function `setStackBlurCanvasRGBA` must be present for blur to work');
-            return;
-          } // Todo: This might not be a problem anymore with out `instanceof` fix
+          // Todo: This might not be a problem anymore with out `instanceof` fix
           // StackBlur requires canvas be on document
-
-
           ctx.canvas.id = svg.UniqueId();
           ctx.canvas.style.display = 'none';
           document.body.append(ctx.canvas);
-          canvasRGBA_(ctx.canvas, x, y, width, height, this.blurRadius);
+          processCanvasRGBA(ctx.canvas, x, y, width, height, this.blurRadius);
           ctx.canvas.remove();
         }
       }]);
@@ -4458,7 +4524,7 @@ var svgEditorExtension_server_opensave = (function () {
     svg.load =
     /*#__PURE__*/
     function () {
-      var _ref4 = _asyncToGenerator(
+      var _ref12 = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(ctx, url) {
         var dom;
@@ -4481,8 +4547,8 @@ var svgEditorExtension_server_opensave = (function () {
         }, _callee, this);
       }));
 
-      return function (_x3, _x4) {
-        return _ref4.apply(this, arguments);
+      return function (_x2, _x3) {
+        return _ref12.apply(this, arguments);
       };
     }(); // load from xml
 
@@ -4512,7 +4578,7 @@ var svgEditorExtension_server_opensave = (function () {
 
       if (svg.opts.ignoreMouse !== true) {
         ctx.canvas.onclick = function (e) {
-          var args = e != null ? [e.clientX, e.clientY] : [event.clientX, event.clientY];
+          var args = !isNullish(e) ? [e.clientX, e.clientY] : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
 
           var _mapXY = mapXY(_construct(svg.Point, args)),
               x = _mapXY.x,
@@ -4522,7 +4588,7 @@ var svgEditorExtension_server_opensave = (function () {
         };
 
         ctx.canvas.onmousemove = function (e) {
-          var args = e != null ? [e.clientX, e.clientY] : [event.clientX, event.clientY];
+          var args = !isNullish(e) ? [e.clientX, e.clientY] : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
 
           var _mapXY2 = mapXY(_construct(svg.Point, args)),
               x = _mapXY2.x,
@@ -4567,20 +4633,20 @@ var svgEditorExtension_server_opensave = (function () {
 
         svg.ViewPort.SetCurrent(cWidth, cHeight);
 
-        if (svg.opts.offsetX != null) {
+        if (!isNullish(svg.opts.offsetX)) {
           e.attribute('x', true).value = svg.opts.offsetX;
         }
 
-        if (svg.opts.offsetY != null) {
+        if (!isNullish(svg.opts.offsetY)) {
           e.attribute('y', true).value = svg.opts.offsetY;
         }
 
-        if (svg.opts.scaleWidth != null || svg.opts.scaleHeight != null) {
+        if (!isNullish(svg.opts.scaleWidth) || !isNullish(svg.opts.scaleHeight)) {
           var viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
           var xRatio = null,
               yRatio = null;
 
-          if (svg.opts.scaleWidth != null) {
+          if (!isNullish(svg.opts.scaleWidth)) {
             if (e.attribute('width').hasValue()) {
               xRatio = e.attribute('width').toPixels('x') / svg.opts.scaleWidth;
             } else if (!isNaN(viewBox[2])) {
@@ -4588,7 +4654,7 @@ var svgEditorExtension_server_opensave = (function () {
             }
           }
 
-          if (svg.opts.scaleHeight != null) {
+          if (!isNullish(svg.opts.scaleHeight)) {
             if (e.attribute('height').hasValue()) {
               yRatio = e.attribute('height').toPixels('y') / svg.opts.scaleHeight;
             } else if (!isNaN(viewBox[3])) {
@@ -4596,11 +4662,11 @@ var svgEditorExtension_server_opensave = (function () {
             }
           }
 
-          if (xRatio == null) {
+          if (isNullish(xRatio)) {
             xRatio = yRatio;
           }
 
-          if (yRatio == null) {
+          if (isNullish(yRatio)) {
             yRatio = xRatio;
           }
 
@@ -4634,13 +4700,14 @@ var svgEditorExtension_server_opensave = (function () {
 
 
         if (svg.opts.ignoreMouse !== true) {
-          needUpdate = needUpdate | svg.Mouse.hasEvents();
+          needUpdate = needUpdate || svg.Mouse.hasEvents();
         } // need update from animations?
 
 
         if (svg.opts.ignoreAnimation !== true) {
           svg.Animations.forEach(function (animation) {
-            needUpdate = needUpdate | animation.update(1000 / svg.FRAMERATE);
+            var needAnimationUpdate = animation.update(1000 / svg.FRAMERATE);
+            needUpdate = needUpdate || needAnimationUpdate;
           });
         } // need update from redraw?
 
@@ -4656,8 +4723,10 @@ var svgEditorExtension_server_opensave = (function () {
           draw(res);
           svg.Mouse.runEvents(); // run and clear our events
         }
-      }, 1000 / svg.FRAMERATE);
+      }, 1000 / svg.FRAMERATE); // Todo: Replace with an image loading Promise utility?
+
       return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
         if (svg.ImagesLoaded()) {
           waitingForImages = false;
           draw(resolve);
@@ -4703,9 +4772,9 @@ var svgEditorExtension_server_opensave = (function () {
       checkPath: function checkPath(element, ctx) {
         var _this26 = this;
 
-        this.events.forEach(function (_ref5, i) {
-          var x = _ref5.x,
-              y = _ref5.y;
+        this.events.forEach(function (_ref13, i) {
+          var x = _ref13.x,
+              y = _ref13.y;
 
           if (ctx.isPointInPath && ctx.isPointInPath(x, y)) {
             _this26.eventElements[i] = element;
@@ -4715,9 +4784,9 @@ var svgEditorExtension_server_opensave = (function () {
       checkBoundingBox: function checkBoundingBox(element, bb) {
         var _this27 = this;
 
-        this.events.forEach(function (_ref6, i) {
-          var x = _ref6.x,
-              y = _ref6.y;
+        this.events.forEach(function (_ref14, i) {
+          var x = _ref14.x,
+              y = _ref14.y;
 
           if (bb.isPointInBox(x, y)) {
             _this27.eventElements[i] = element;
@@ -4764,47 +4833,113 @@ var svgEditorExtension_server_opensave = (function () {
     init: function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee2(_ref) {
-        var decode64, encode64, importLocale, strings, svgEditor, $, svgCanvas, getFileNameFromTitle, xhtmlEscape, clientDownloadSupport, saveSvgAction, saveImgAction, cancelled, openSvgAction, importSvgAction, importImgAction, openSvgForm, importSvgForm, importImgForm, rebuildInput;
-        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+      regeneratorRuntime.mark(function _callee5(_ref) {
+        var $, decode64, encode64, importLocale, strings, svgEditor, svgCanvas, getFileNameFromTitle, xhtmlEscape, clientDownloadSupport, saveSvgAction, saveImgAction, cancelled, openSvgAction, importSvgAction, importImgAction, openSvgForm, importSvgForm, importImgForm, rebuildInput;
+        return regeneratorRuntime.wrap(function _callee5$(_context5) {
           while (1) {
-            switch (_context2.prev = _context2.next) {
+            switch (_context5.prev = _context5.next) {
               case 0:
-                rebuildInput = function _ref5(form) {
+                rebuildInput = function _ref7(form) {
                   form.empty();
                   var inp = $('<input type="file" name="svg_file">').appendTo(form);
+                  /**
+                   * Submit the form, empty its contents for reuse and show
+                   *   uploading message.
+                   * @returns {undefined}
+                   */
 
                   function submit() {
-                    // This submits the form, which returns the file data using svgEditor.processFile()
-                    form.submit();
-                    rebuildInput(form);
-                    $.process_cancel(strings.uploading, function () {
-                      cancelled = true;
-                      $('#dialog_box').hide();
-                    });
+                    return _submit.apply(this, arguments);
+                  }
+
+                  function _submit() {
+                    _submit = _asyncToGenerator(
+                    /*#__PURE__*/
+                    regeneratorRuntime.mark(function _callee4() {
+                      return regeneratorRuntime.wrap(function _callee4$(_context4) {
+                        while (1) {
+                          switch (_context4.prev = _context4.next) {
+                            case 0:
+                              // This submits the form, which returns the file data using `svgEditor.processFile()`
+                              form.submit();
+                              rebuildInput(form);
+                              _context4.next = 4;
+                              return $.process_cancel(strings.uploading);
+
+                            case 4:
+                              cancelled = true;
+                              $('#dialog_box').hide();
+
+                            case 6:
+                            case "end":
+                              return _context4.stop();
+                          }
+                        }
+                      }, _callee4, this);
+                    }));
+                    return _submit.apply(this, arguments);
                   }
 
                   if (form[0] === openSvgForm[0]) {
-                    inp.change(function () {
-                      // This takes care of the "are you sure" dialog box
-                      svgEditor.openPrep(function (ok) {
-                        if (!ok) {
-                          rebuildInput(form);
-                          return;
-                        }
+                    inp.change(
+                    /*#__PURE__*/
+                    _asyncToGenerator(
+                    /*#__PURE__*/
+                    regeneratorRuntime.mark(function _callee2() {
+                      var ok;
+                      return regeneratorRuntime.wrap(function _callee2$(_context2) {
+                        while (1) {
+                          switch (_context2.prev = _context2.next) {
+                            case 0:
+                              _context2.next = 2;
+                              return svgEditor.openPrep();
 
-                        submit();
-                      });
-                    });
+                            case 2:
+                              ok = _context2.sent;
+
+                              if (ok) {
+                                _context2.next = 6;
+                                break;
+                              }
+
+                              rebuildInput(form);
+                              return _context2.abrupt("return");
+
+                            case 6:
+                              _context2.next = 8;
+                              return submit();
+
+                            case 8:
+                            case "end":
+                              return _context2.stop();
+                          }
+                        }
+                      }, _callee2, this);
+                    })));
                   } else {
-                    inp.change(function () {
-                      // This submits the form, which returns the file data using svgEditor.processFile()
-                      submit();
-                    });
+                    inp.change(
+                    /*#__PURE__*/
+                    _asyncToGenerator(
+                    /*#__PURE__*/
+                    regeneratorRuntime.mark(function _callee3() {
+                      return regeneratorRuntime.wrap(function _callee3$(_context3) {
+                        while (1) {
+                          switch (_context3.prev = _context3.next) {
+                            case 0:
+                              _context3.next = 2;
+                              return submit();
+
+                            case 2:
+                            case "end":
+                              return _context3.stop();
+                          }
+                        }
+                      }, _callee3, this);
+                    })));
                   }
                 };
 
-                clientDownloadSupport = function _ref4(filename, suffix, uri) {
+                clientDownloadSupport = function _ref6(filename, suffix, uri) {
                   var support = $('<a>')[0].download === '';
                   var a;
 
@@ -4816,27 +4951,33 @@ var svgEditorExtension_server_opensave = (function () {
                     a[0].click();
                     return true;
                   }
+
+                  return false;
                 };
 
-                xhtmlEscape = function _ref3(str) {
+                xhtmlEscape = function _ref5(str) {
                   return str.replace(/&(?!amp;)/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;'); // < is actually disallowed above anyways
                 };
 
-                getFileNameFromTitle = function _ref2() {
+                getFileNameFromTitle = function _ref4() {
                   var title = svgCanvas.getDocumentTitle(); // We convert (to underscore) only those disallowed Win7 file name characters
 
                   return title.trim().replace(/[/\\:*?"<>|]/g, '_');
                 };
 
-                decode64 = _ref.decode64, encode64 = _ref.encode64, importLocale = _ref.importLocale;
-                _context2.next = 7;
+                $ = _ref.$, decode64 = _ref.decode64, encode64 = _ref.encode64, importLocale = _ref.importLocale;
+                _context5.next = 7;
                 return importLocale();
 
               case 7:
-                strings = _context2.sent;
+                strings = _context5.sent;
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas;
+                /**
+                 *
+                 * @returns {string}
+                 */
+
                 saveSvgAction = svgEditor.curConfig.extPath + 'filesave.php', saveImgAction = svgEditor.curConfig.extPath + 'filesave.php'; // Create upload target (hidden iframe)
 
                 cancelled = false;
@@ -4906,28 +5047,33 @@ var svgEditorExtension_server_opensave = (function () {
                                 note += '\n\n' + pre + issues.join(pre);
                               }
 
-                              if (note.length) {
-                                alert(note);
+                              if (!note.length) {
+                                _context.next = 13;
+                                break;
                               }
 
+                              _context.next = 13;
+                              return $.alert(note);
+
+                            case 13:
                               filename = getFileNameFromTitle();
                               suffix = '.' + data.type.toLowerCase();
 
                               if (!clientDownloadSupport(filename, suffix, datauri)) {
-                                _context.next = 15;
+                                _context.next = 17;
                                 break;
                               }
 
                               return _context.abrupt("return");
 
-                            case 15:
+                            case 17:
                               $('<form>').attr({
                                 method: 'post',
                                 action: saveImgAction,
                                 target: 'output_frame'
                               }).append('<input type="hidden" name="output_img" value="' + datauri + '">').append('<input type="hidden" name="mime" value="' + mimeType + '">').append('<input type="hidden" name="filename" value="' + xhtmlEscape(filename) + '">').appendTo('body').submit().remove();
 
-                            case 16:
+                            case 18:
                             case "end":
                               return _context.stop();
                           }
@@ -4942,13 +5088,13 @@ var svgEditorExtension_server_opensave = (function () {
                 }); // Do nothing if client support is found
 
                 if (!window.FileReader) {
-                  _context2.next = 17;
+                  _context5.next = 16;
                   break;
                 }
 
-                return _context2.abrupt("return");
+                return _context5.abrupt("return");
 
-              case 17:
+              case 16:
                 // Change these to appropriate script file
                 openSvgAction = svgEditor.curConfig.extPath + 'fileopen.php?type=load_svg';
                 importSvgAction = svgEditor.curConfig.extPath + 'fileopen.php?type=import_svg';
@@ -5000,6 +5146,12 @@ var svgEditorExtension_server_opensave = (function () {
                 importImgForm = openSvgForm.clone().attr('action', importImgAction); // It appears necessary to rebuild this input every time a file is
                 // selected so the same file can be picked and the change event can fire.
 
+                /**
+                 *
+                 * @param {external:jQuery} form
+                 * @returns {undefined}
+                 */
+
                 // Create the input elements
                 rebuildInput(openSvgForm);
                 rebuildInput(importSvgForm);
@@ -5009,12 +5161,12 @@ var svgEditorExtension_server_opensave = (function () {
                 $('#tool_import').show().prepend(importSvgForm);
                 $('#tool_image').prepend(importImgForm);
 
-              case 31:
+              case 30:
               case "end":
-                return _context2.stop();
+                return _context5.stop();
             }
           }
-        }, _callee2, this);
+        }, _callee5, this);
       }));
 
       return function init(_x) {
diff --git a/dist/extensions/ext-shapes.js b/dist/extensions/ext-shapes.js
index 740b6eb3..6022450b 100644
--- a/dist/extensions/ext-shapes.js
+++ b/dist/extensions/ext-shapes.js
@@ -37,7 +37,43 @@ var svgEditorExtension_shapes = (function () {
     };
   }
 
-  /* globals jQuery */
+  function _slicedToArray(arr, i) {
+    return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
+  }
+
+  function _arrayWithHoles(arr) {
+    if (Array.isArray(arr)) return arr;
+  }
+
+  function _iterableToArrayLimit(arr, i) {
+    var _arr = [];
+    var _n = true;
+    var _d = false;
+    var _e = undefined;
+
+    try {
+      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
+        _arr.push(_s.value);
+
+        if (i && _arr.length === i) break;
+      }
+    } catch (err) {
+      _d = true;
+      _e = err;
+    } finally {
+      try {
+        if (!_n && _i["return"] != null) _i["return"]();
+      } finally {
+        if (_d) throw _e;
+      }
+    }
+
+    return _arr;
+  }
+
+  function _nonIterableRest() {
+    throw new TypeError("Invalid attempt to destructure non-iterable instance");
+  }
 
   /**
    * ext-shapes.js
@@ -53,12 +89,12 @@ var svgEditorExtension_shapes = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(_ref) {
-        var importLocale, strings, svgEditor, $, canv, svgroot, lastBBox, categories, library, modeId, startClientPos, currentD, curShapeId, curShape, startX, startY, curLib, loadIcons, makeButtons, loadLibrary, buttons;
+        var $, importLocale, strings, svgEditor, canv, svgroot, lastBBox, categories, library, modeId, startClientPos, currentD, curShapeId, curShape, startX, startY, curLib, loadIcons, makeButtons, loadLibrary, buttons;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
               case 0:
-                loadLibrary = function _ref4(catId) {
+                loadLibrary = function _ref8(catId) {
                   var lib = library[catId];
 
                   if (!lib) {
@@ -84,7 +120,7 @@ var svgEditorExtension_shapes = (function () {
                   loadIcons();
                 };
 
-                makeButtons = function _ref3(cat, shapes) {
+                makeButtons = function _ref7(cat, shapes) {
                   var size = curLib.size || 300;
                   var fill = curLib.fill || false;
                   var off = size * 0.05;
@@ -97,10 +133,11 @@ var svgEditorExtension_shapes = (function () {
                   shapeIcon.documentElement.setAttribute('height', height);
                   var svgElem = $(document.importNode(shapeIcon.documentElement, true));
                   var data = shapes.data;
-                  curLib.buttons = [];
+                  curLib.buttons = Object.entries(data).map(function (_ref2) {
+                    var _ref3 = _slicedToArray(_ref2, 2),
+                        id = _ref3[0],
+                        pathD = _ref3[1];
 
-                  for (var id in data) {
-                    var pathD = data[id];
                     var icon = svgElem.clone();
                     icon.find('path').attr('d', pathD);
                     var iconBtn = icon.wrap('<div class="tool_button">').parent().attr({
@@ -108,22 +145,21 @@ var svgEditorExtension_shapes = (function () {
                       title: id
                     }); // Store for later use
 
-                    curLib.buttons.push(iconBtn[0]);
-                  }
+                    return iconBtn[0];
+                  });
                 };
 
-                loadIcons = function _ref2() {
+                loadIcons = function _ref6() {
                   $('#shape_buttons').empty().append(curLib.buttons);
                 };
 
-                importLocale = _ref.importLocale;
+                $ = _ref.$, importLocale = _ref.importLocale;
                 _context.next = 6;
                 return importLocale();
 
               case 6:
                 strings = _context.sent;
                 svgEditor = this;
-                $ = jQuery;
                 canv = svgEditor.canvas;
                 svgroot = canv.getRootElem();
                 lastBBox = {}; // This populates the category list
@@ -167,6 +203,11 @@ var svgEditorExtension_shapes = (function () {
                 modeId = 'shapelib';
                 startClientPos = {};
                 curLib = library.basic;
+                /**
+                *
+                * @returns {undefined}
+                */
+
                 buttons = [{
                   id: 'tool_shapelib',
                   icon: svgEditor.curConfig.extIconsPath + 'shapes.png',
@@ -185,7 +226,7 @@ var svgEditorExtension_shapes = (function () {
                     return Object.assign(buttons[i], button);
                   }),
                   callback: function callback() {
-                    $('<style>').text('#shape_buttons {' + 'overflow: auto;' + 'width: 180px;' + 'max-height: 300px;' + 'display: table-cell;' + 'vertical-align: middle;' + '}' + '#shape_cats {' + 'min-width: 110px;' + 'display: table-cell;' + 'vertical-align: middle;' + 'height: 300px;' + '}' + '#shape_cats > div {' + 'line-height: 1em;' + 'padding: .5em;' + 'border:1px solid #B0B0B0;' + 'background: #E8E8E8;' + 'margin-bottom: -1px;' + '}' + '#shape_cats div:hover {' + 'background: #FFFFCC;' + '}' + '#shape_cats div.current {' + 'font-weight: bold;' + '}').appendTo('head');
+                    $('<style>').text("\n          #shape_buttons {\n            overflow: auto;\n            width: 180px;\n            max-height: 300px;\n            display: table-cell;\n            vertical-align: middle;\n          }\n          #shape_cats {\n            min-width: 110px;\n            display: table-cell;\n            vertical-align: middle;\n            height: 300px;\n          }\n          #shape_cats > div {\n            line-height: 1em;\n            padding: .5em;\n            border:1px solid #B0B0B0;\n            background: #E8E8E8;\n            margin-bottom: -1px;\n          }\n          #shape_cats div:hover {\n            background: #FFFFCC;\n          }\n          #shape_cats div.current {\n            font-weight: bold;\n          }\n        ").appendTo('head');
                     var btnDiv = $('<div id="shape_buttons">');
                     $('#tools_shapelib > *').wrapAll(btnDiv);
                     var shower = $('#tools_shapelib_show');
@@ -233,18 +274,20 @@ var svgEditorExtension_shapes = (function () {
                     }); // Now add shape categories from locale
 
                     var cats = {};
+                    Object.entries(categories).forEach(function (_ref4) {
+                      var _ref5 = _slicedToArray(_ref4, 2),
+                          o = _ref5[0],
+                          categoryName = _ref5[1];
 
-                    for (var o in categories) {
-                      cats['#shape_cats [data-cat="' + o + '"]'] = categories[o];
-                    }
-
+                      cats['#shape_cats [data-cat="' + o + '"]'] = categoryName;
+                    });
                     this.setStrings('content', cats);
                   },
                   mouseDown: function mouseDown(opts) {
                     var mode = canv.getMode();
 
                     if (mode !== modeId) {
-                      return;
+                      return undefined;
                     }
 
                     startX = opts.start_x;
@@ -349,7 +392,7 @@ var svgEditorExtension_shapes = (function () {
                     var mode = canv.getMode();
 
                     if (mode !== modeId) {
-                      return;
+                      return undefined;
                     }
 
                     var keepObject = opts.event.clientX !== startClientPos.x && opts.event.clientY !== startClientPos.y;
@@ -361,7 +404,7 @@ var svgEditorExtension_shapes = (function () {
                   }
                 });
 
-              case 19:
+              case 18:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-star.js b/dist/extensions/ext-star.js
index cb4f0a27..ca8f3bd8 100644
--- a/dist/extensions/ext-star.js
+++ b/dist/extensions/ext-star.js
@@ -37,8 +37,6 @@ var svgEditorExtension_star = (function () {
     };
   }
 
-  /* globals jQuery */
-
   /**
    * ext-star.js
    *
@@ -52,7 +50,7 @@ var svgEditorExtension_star = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(S) {
-        var svgEditor, $, svgCanvas, importLocale, selElems, started, newFO, strings, showPanel, setAttr, buttons, contextTools;
+        var svgEditor, svgCanvas, $, importLocale, selElems, started, newFO, strings, showPanel, setAttr, buttons, contextTools;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
@@ -74,14 +72,13 @@ var svgEditorExtension_star = (function () {
                 };
 
                 svgEditor = this;
-                $ = jQuery;
                 svgCanvas = svgEditor.canvas;
-                importLocale = S.importLocale; // {svgcontent},
+                $ = S.$, importLocale = S.importLocale; // {svgcontent},
 
-                _context.next = 8;
+                _context.next = 7;
                 return importLocale();
 
-              case 8:
+              case 7:
                 strings = _context.sent;
 
                 /*
@@ -175,10 +172,12 @@ var svgEditorExtension_star = (function () {
                         started: true
                       };
                     }
+
+                    return undefined;
                   },
                   mouseMove: function mouseMove(opts) {
                     if (!started) {
-                      return;
+                      return undefined;
                     }
 
                     if (svgCanvas.getMode() === 'star') {
@@ -239,6 +238,8 @@ var svgEditorExtension_star = (function () {
                         started: true
                       };
                     }
+
+                    return undefined;
                   },
                   mouseUp: function mouseUp() {
                     if (svgCanvas.getMode() === 'star') {
@@ -249,6 +250,8 @@ var svgEditorExtension_star = (function () {
                         element: newFO
                       };
                     }
+
+                    return undefined;
                   },
                   selectedChanged: function selectedChanged(opts) {
                     // Use this to update the current selected elements
@@ -275,7 +278,7 @@ var svgEditorExtension_star = (function () {
                   elementChanged: function elementChanged(opts) {}
                 });
 
-              case 12:
+              case 11:
               case "end":
                 return _context.stop();
             }
diff --git a/dist/extensions/ext-storage.js b/dist/extensions/ext-storage.js
index d365c52c..9d13602f 100644
--- a/dist/extensions/ext-storage.js
+++ b/dist/extensions/ext-storage.js
@@ -37,7 +37,43 @@ var svgEditorExtension_storage = (function () {
     };
   }
 
-  /* globals jQuery */
+  function _slicedToArray(arr, i) {
+    return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
+  }
+
+  function _arrayWithHoles(arr) {
+    if (Array.isArray(arr)) return arr;
+  }
+
+  function _iterableToArrayLimit(arr, i) {
+    var _arr = [];
+    var _n = true;
+    var _d = false;
+    var _e = undefined;
+
+    try {
+      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
+        _arr.push(_s.value);
+
+        if (i && _arr.length === i) break;
+      }
+    } catch (err) {
+      _d = true;
+      _e = err;
+    } finally {
+      try {
+        if (!_n && _i["return"] != null) _i["return"]();
+      } finally {
+        if (_d) throw _e;
+      }
+    }
+
+    return _arr;
+  }
+
+  function _nonIterableRest() {
+    throw new TypeError("Invalid attempt to destructure non-iterable instance");
+  }
 
   /**
    * ext-storage.js
@@ -63,9 +99,9 @@ var svgEditorExtension_storage = (function () {
   */
   var extStorage = {
     name: 'storage',
-    init: function init() {
+    init: function init(_ref) {
+      var $ = _ref.$;
       var svgEditor = this;
-      var $ = jQuery;
       var svgCanvas = svgEditor.canvas; // We could empty any already-set data for users when they decline storage,
       //  but it would be a risk for users who wanted to store but accidentally
       // said "no"; instead, we'll let those who already set it, delete it themselves;
@@ -78,6 +114,11 @@ var svgEditorExtension_storage = (function () {
           forceStorage = _svgEditor$curConfig.forceStorage;
       var storage = svgEditor.storage,
           updateCanvas = svgEditor.updateCanvas;
+      /**
+       * Replace `storagePrompt` parameter within URL.
+       * @param {string} val
+       * @returns {undefined}
+       */
 
       function replaceStoragePrompt(val) {
         val = val ? 'storagePrompt=' + val : '';
@@ -91,6 +132,13 @@ var svgEditorExtension_storage = (function () {
           loc.href += (loc.href.includes('?') ? '&' : '?') + val;
         }
       }
+      /**
+       * Sets SVG content as a string with "svgedit-" and the current
+       *   canvas name as namespace.
+       * @param {string} val
+       * @returns {undefined}
+       */
+
 
       function setSVGContentStorage(val) {
         if (storage) {
@@ -103,29 +151,42 @@ var svgEditorExtension_storage = (function () {
           }
         }
       }
+      /**
+       * Set the cookie to expire.
+       * @param {string} cookie
+       * @returns {undefined}
+       */
+
 
       function expireCookie(cookie) {
         document.cookie = encodeURIComponent(cookie) + '=; expires=Thu, 01 Jan 1970 00:00:00 GMT';
       }
+      /**
+       * Expire the storage cookie.
+       * @returns {undefined}
+       */
+
 
       function removeStoragePrefCookie() {
-        expireCookie('store');
+        expireCookie('svgeditstore');
       }
+      /**
+       * Empties storage for each of the current preferences.
+       * @returns {undefined}
+       */
+
 
       function emptyStorage() {
         setSVGContentStorage('');
+        Object.keys(svgEditor.curPrefs).forEach(function (name) {
+          name = 'svg-edit-' + name;
 
-        for (var name in svgEditor.curPrefs) {
-          if (svgEditor.curPrefs.hasOwnProperty(name)) {
-            name = 'svg-edit-' + name;
-
-            if (storage) {
-              storage.removeItem(name);
-            }
-
-            expireCookie(name);
+          if (storage) {
+            storage.removeItem(name);
           }
-        }
+
+          expireCookie(name);
+        });
       } // emptyStorage();
 
       /**
@@ -142,11 +203,11 @@ var svgEditorExtension_storage = (function () {
       function setupBeforeUnloadListener() {
         window.addEventListener('beforeunload', function (e) {
           // Don't save anything unless the user opted in to storage
-          if (!document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/)) {
+          if (!document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/)) {
             return;
           }
 
-          if (document.cookie.match(/(?:^|;\s*)store=prefsAndContent/)) {
+          if (document.cookie.match(/(?:^|;\s*)svgeditstore=prefsAndContent/)) {
             setSVGContentStorage(svgCanvas.getSvgString());
           }
 
@@ -156,28 +217,27 @@ var svgEditorExtension_storage = (function () {
           // svgEditor.showSaveWarning = false;
 
           var curPrefs = svgEditor.curPrefs;
+          Object.entries(curPrefs).forEach(function (_ref2) {
+            var _ref3 = _slicedToArray(_ref2, 2),
+                key = _ref3[0],
+                val = _ref3[1];
 
-          for (var key in curPrefs) {
-            if (curPrefs.hasOwnProperty(key)) {
-              // It's our own config, so we don't need to iterate up the prototype chain
-              var val = curPrefs[key];
-              var store = val !== undefined;
-              key = 'svg-edit-' + key;
+            var store = val !== undefined;
+            key = 'svg-edit-' + key;
 
-              if (!store) {
-                continue;
-              }
-
-              if (storage) {
-                storage.setItem(key, val);
-              } else if (window.widget) {
-                window.widget.setPreferenceForKey(val, key);
-              } else {
-                val = encodeURIComponent(val);
-                document.cookie = encodeURIComponent(key) + '=' + val + '; expires=Fri, 31 Dec 9999 23:59:59 GMT';
-              }
+            if (!store) {
+              return;
             }
-          }
+
+            if (storage) {
+              storage.setItem(key, val);
+            } else if (window.widget) {
+              window.widget.setPreferenceForKey(val, key);
+            } else {
+              val = encodeURIComponent(val);
+              document.cookie = encodeURIComponent(key) + '=' + val + '; expires=Fri, 31 Dec 9999 23:59:59 GMT';
+            }
+          });
         });
       }
 
@@ -187,14 +247,14 @@ var svgEditorExtension_storage = (function () {
         langReady: function () {
           var _langReady = _asyncToGenerator(
           /*#__PURE__*/
-          regeneratorRuntime.mark(function _callee(_ref) {
-            var importLocale, _$$deparam$querystrin, storagePrompt, confirmSetStorage, message, storagePrefsAndContent, storagePrefsOnly, storagePrefs, storageNoPrefsOrContent, storageNoPrefs, rememberLabel, rememberTooltip, options, oldContainerWidth, oldContainerMarginLeft, oldContentHeight, oldContainerHeight;
+          regeneratorRuntime.mark(function _callee(_ref4) {
+            var importLocale, _$$deparam$querystrin, storagePrompt, confirmSetStorage, message, storagePrefsAndContent, storagePrefsOnly, storagePrefs, storageNoPrefsOrContent, storageNoPrefs, rememberLabel, rememberTooltip, options, oldContainerWidth, oldContainerMarginLeft, oldContentHeight, oldContainerHeight, _ref5, pref, checked;
 
             return regeneratorRuntime.wrap(function _callee$(_context) {
               while (1) {
                 switch (_context.prev = _context.next) {
                   case 0:
-                    importLocale = _ref.importLocale;
+                    importLocale = _ref4.importLocale;
                     _$$deparam$querystrin = $.deparam.querystring(true), storagePrompt = _$$deparam$querystrin.storagePrompt;
                     _context.next = 4;
                     return importLocale();
@@ -217,7 +277,7 @@ var svgEditorExtension_storage = (function () {
                     //   extension! (and to avoid using any prior storage, set the
                     //   config option "noStorageOnLoad" to true).
 
-                    if (!forceStorage && ( // If the URL has been explicitly set to always prompt the
+                    if (!(!forceStorage && ( // If the URL has been explicitly set to always prompt the
                     //  user (e.g., so one can be pointed to a URL where one
                     // can alter one's settings, say to prevent future storage)...
                     storagePrompt === true || // ...or...if the URL at least doesn't explicitly prevent a
@@ -225,100 +285,129 @@ var svgEditorExtension_storage = (function () {
                     // don't want to set cookies at all but who don't want
                     // continual prompts about it)...
                     storagePrompt !== false && // ...and this user hasn't previously indicated a desire for storage
-                    !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/) // ...then show the storage prompt.
-                    )) {
-                      options = [];
+                    !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/) // ...then show the storage prompt.
+                    ))) {
+                      _context.next = 44;
+                      break;
+                    }
 
-                      if (storage) {
-                        options.unshift({
-                          value: 'prefsAndContent',
-                          text: storagePrefsAndContent
-                        }, {
-                          value: 'prefsOnly',
-                          text: storagePrefsOnly
-                        }, {
-                          value: 'noPrefsOrContent',
-                          text: storageNoPrefsOrContent
-                        });
-                      } else {
-                        options.unshift({
-                          value: 'prefsOnly',
-                          text: storagePrefs
-                        }, {
-                          value: 'noPrefsOrContent',
-                          text: storageNoPrefs
-                        });
-                      } // Hack to temporarily provide a wide and high enough dialog
+                    options = [];
 
-
-                      oldContainerWidth = $('#dialog_container')[0].style.width, oldContainerMarginLeft = $('#dialog_container')[0].style.marginLeft, oldContentHeight = $('#dialog_content')[0].style.height, oldContainerHeight = $('#dialog_container')[0].style.height;
-                      $('#dialog_content')[0].style.height = '120px';
-                      $('#dialog_container')[0].style.height = '170px';
-                      $('#dialog_container')[0].style.width = '800px';
-                      $('#dialog_container')[0].style.marginLeft = '-400px'; // Open select-with-checkbox dialog
-                      // From svg-editor.js
-
-                      $.select(message, options, function (pref, checked) {
-                        if (pref && pref !== 'noPrefsOrContent') {
-                          // Regardless of whether the user opted
-                          // to remember the choice (and move to a URL which won't
-                          // ask them again), we have to assume the user
-                          // doesn't even want to remember their not wanting
-                          // storage, so we don't set the cookie or continue on with
-                          //  setting storage on beforeunload
-                          document.cookie = 'store=' + encodeURIComponent(pref) + '; expires=Fri, 31 Dec 9999 23:59:59 GMT'; // 'prefsAndContent' | 'prefsOnly'
-                          // If the URL was configured to always insist on a prompt, if
-                          //    the user does indicate a wish to store their info, we
-                          //    don't want ask them again upon page refresh so move
-                          //    them instead to a URL which does not always prompt
-
-                          if (storagePrompt === true && checked) {
-                            replaceStoragePrompt();
-                            return;
-                          }
-                        } else {
-                          // The user does not wish storage (or cancelled, which we treat equivalently)
-                          removeStoragePrefCookie();
-
-                          if (pref && // If the user explicitly expresses wish for no storage
-                          emptyStorageOnDecline) {
-                            emptyStorage();
-                          }
-
-                          if (pref && checked) {
-                            // Open a URL which won't set storage and won't prompt user about storage
-                            replaceStoragePrompt('false');
-                            return;
-                          }
-                        } // Reset width/height of dialog (e.g., for use by Export)
-
-
-                        $('#dialog_container')[0].style.width = oldContainerWidth;
-                        $('#dialog_container')[0].style.marginLeft = oldContainerMarginLeft;
-                        $('#dialog_content')[0].style.height = oldContentHeight;
-                        $('#dialog_container')[0].style.height = oldContainerHeight; // It should be enough to (conditionally) add to storage on
-                        //   beforeunload, but if we wished to update immediately,
-                        //   we might wish to try setting:
-                        //       svgEditor.setConfig({noStorageOnLoad: true});
-                        //   and then call:
-                        //       svgEditor.loadContentAndPrefs();
-                        // We don't check for noStorageOnLoad here because
-                        //   the prompt gives the user the option to store data
-
-                        setupBeforeUnloadListener();
-                        svgEditor.storagePromptState = 'closed';
-                        updateCanvas(true);
-                      }, null, null, {
-                        label: rememberLabel,
-                        checked: true,
-                        tooltip: rememberTooltip
+                    if (storage) {
+                      options.unshift({
+                        value: 'prefsAndContent',
+                        text: storagePrefsAndContent
+                      }, {
+                        value: 'prefsOnly',
+                        text: storagePrefsOnly
+                      }, {
+                        value: 'noPrefsOrContent',
+                        text: storageNoPrefsOrContent
                       });
-                      svgEditor.storagePromptState = 'waiting';
-                    } else if (!noStorageOnLoad || forceStorage) {
+                    } else {
+                      options.unshift({
+                        value: 'prefsOnly',
+                        text: storagePrefs
+                      }, {
+                        value: 'noPrefsOrContent',
+                        text: storageNoPrefs
+                      });
+                    } // Hack to temporarily provide a wide and high enough dialog
+
+
+                    oldContainerWidth = $('#dialog_container')[0].style.width, oldContainerMarginLeft = $('#dialog_container')[0].style.marginLeft, oldContentHeight = $('#dialog_content')[0].style.height, oldContainerHeight = $('#dialog_container')[0].style.height;
+                    $('#dialog_content')[0].style.height = '120px';
+                    $('#dialog_container')[0].style.height = '170px';
+                    $('#dialog_container')[0].style.width = '800px';
+                    $('#dialog_container')[0].style.marginLeft = '-400px'; // Open select-with-checkbox dialog
+                    // From svg-editor.js
+
+                    svgEditor.storagePromptState = 'waiting';
+                    _context.next = 20;
+                    return $.select(message, options, null, null, {
+                      label: rememberLabel,
+                      checked: true,
+                      tooltip: rememberTooltip
+                    });
+
+                  case 20:
+                    _ref5 = _context.sent;
+                    pref = _ref5.response;
+                    checked = _ref5.checked;
+
+                    if (!(pref && pref !== 'noPrefsOrContent')) {
+                      _context.next = 30;
+                      break;
+                    }
+
+                    // Regardless of whether the user opted
+                    // to remember the choice (and move to a URL which won't
+                    // ask them again), we have to assume the user
+                    // doesn't even want to remember their not wanting
+                    // storage, so we don't set the cookie or continue on with
+                    //  setting storage on beforeunload
+                    document.cookie = 'svgeditstore=' + encodeURIComponent(pref) + '; expires=Fri, 31 Dec 9999 23:59:59 GMT'; // 'prefsAndContent' | 'prefsOnly'
+                    // If the URL was configured to always insist on a prompt, if
+                    //    the user does indicate a wish to store their info, we
+                    //    don't want ask them again upon page refresh so move
+                    //    them instead to a URL which does not always prompt
+
+                    if (!(storagePrompt === true && checked)) {
+                      _context.next = 28;
+                      break;
+                    }
+
+                    replaceStoragePrompt();
+                    return _context.abrupt("return");
+
+                  case 28:
+                    _context.next = 35;
+                    break;
+
+                  case 30:
+                    // The user does not wish storage (or cancelled, which we treat equivalently)
+                    removeStoragePrefCookie();
+
+                    if (pref && // If the user explicitly expresses wish for no storage
+                    emptyStorageOnDecline) {
+                      emptyStorage();
+                    }
+
+                    if (!(pref && checked)) {
+                      _context.next = 35;
+                      break;
+                    }
+
+                    // Open a URL which won't set storage and won't prompt user about storage
+                    replaceStoragePrompt('false');
+                    return _context.abrupt("return");
+
+                  case 35:
+                    // Reset width/height of dialog (e.g., for use by Export)
+                    $('#dialog_container')[0].style.width = oldContainerWidth;
+                    $('#dialog_container')[0].style.marginLeft = oldContainerMarginLeft;
+                    $('#dialog_content')[0].style.height = oldContentHeight;
+                    $('#dialog_container')[0].style.height = oldContainerHeight; // It should be enough to (conditionally) add to storage on
+                    //   beforeunload, but if we wished to update immediately,
+                    //   we might wish to try setting:
+                    //       svgEditor.setConfig({noStorageOnLoad: true});
+                    //   and then call:
+                    //       svgEditor.loadContentAndPrefs();
+                    // We don't check for noStorageOnLoad here because
+                    //   the prompt gives the user the option to store data
+
+                    setupBeforeUnloadListener();
+                    svgEditor.storagePromptState = 'closed';
+                    updateCanvas(true);
+                    _context.next = 45;
+                    break;
+
+                  case 44:
+                    if (!noStorageOnLoad || forceStorage) {
                       setupBeforeUnloadListener();
                     }
 
-                  case 10:
+                  case 45:
                   case "end":
                     return _context.stop();
                 }
diff --git a/dist/extensions/ext-webappfind.js b/dist/extensions/ext-webappfind.js
index ad88c032..4492bfa0 100644
--- a/dist/extensions/ext-webappfind.js
+++ b/dist/extensions/ext-webappfind.js
@@ -49,12 +49,12 @@ var svgEditorExtension_webappfind = (function () {
       var _init = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee(_ref) {
-        var importLocale, strings, svgEditor, saveMessage, readMessage, excludedMessages, pathID, buttons;
+        var importLocale, $, strings, svgEditor, saveMessage, readMessage, excludedMessages, pathID, buttons;
         return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
             switch (_context.prev = _context.next) {
               case 0:
-                importLocale = _ref.importLocale;
+                importLocale = _ref.importLocale, $ = _ref.$;
                 _context.next = 3;
                 return importLocale();
 
@@ -73,6 +73,7 @@ var svgEditorExtension_webappfind = (function () {
                 function (win, _ref2) {
                   var data = _ref2.data,
                       origin = _ref2.origin;
+                  // eslint-disable-line no-shadow
                   // console.log('data, origin', data, origin);
                   var type, content;
 
@@ -103,7 +104,7 @@ var svgEditorExtension_webappfind = (function () {
                       break;
 
                     case 'save-end':
-                      alert("save complete for pathID ".concat(pathID, "!"));
+                      $.alert("save complete for pathID ".concat(pathID, "!"));
                       break;
 
                     default:
diff --git a/dist/extensions/ext-xdomain-messaging.js b/dist/extensions/ext-xdomain-messaging.js
index a776371b..2a87969e 100644
--- a/dist/extensions/ext-xdomain-messaging.js
+++ b/dist/extensions/ext-xdomain-messaging.js
@@ -65,7 +65,8 @@ var svgEditorExtension_xdomain_messaging = (function () {
           var allowedOrigins = svgEditor.curConfig.allowedOrigins;
 
           if (!allowedOrigins.includes('*') && !allowedOrigins.includes(e.origin)) {
-            console.log("Origin ".concat(e.origin, " not whitelisted for posting to ").concat(window.origin));
+            console.log("Origin ".concat(e.origin, " not whitelisted for posting to ").concat(window.origin)); // eslint-disable-line no-console
+
             return;
           }
 
@@ -88,7 +89,7 @@ var svgEditorExtension_xdomain_messaging = (function () {
           e.source.postMessage(JSON.stringify(message), '*');
         });
       } catch (err) {
-        console.log('Error with xdomain message listener: ' + err);
+        console.log('Error with xdomain message listener: ' + err); // eslint-disable-line no-console
       }
     }
   };
diff --git a/dist/extensions/imagelib/index.js b/dist/extensions/imagelib/index.js
index ca1cc7fb..47af002c 100644
--- a/dist/extensions/imagelib/index.js
+++ b/dist/extensions/imagelib/index.js
@@ -57,7 +57,9 @@
           data = canvas.toDataURL();
         } catch (err) {
           // This fails in Firefox with `file:///` URLs :(
-          alert('Data URL conversion failed: ' + err);
+          // Todo: This could use a generic alert library instead
+          alert('Data URL conversion failed: ' + err); // eslint-disable-line no-alert
+
           data = '';
         }
 
diff --git a/dist/extensions/imagelib/openclipart.js b/dist/extensions/imagelib/openclipart.js
index 7d8c5776..724920be 100644
--- a/dist/extensions/imagelib/openclipart.js
+++ b/dist/extensions/imagelib/openclipart.js
@@ -3004,6 +3004,13 @@
 
   manipulation($$1, jml);
   var baseAPIURL = 'https://openclipart.org/search/json/';
+  var jsVoid = 'javascript: void(0);'; // eslint-disable-line no-script-url
+
+  /**
+   * Shows results after query submission.
+   * @param {string} url
+   * @returns {undefined}
+   */
 
   function processResults(_x) {
     return _processResults.apply(this, arguments);
@@ -3021,7 +3028,7 @@
             case 0:
               queryLink = function _ref4(query) {
                 return ['a', {
-                  href: 'javascript: void(0);',
+                  href: jsVoid,
                   dataset: {
                     value: query
                   },
@@ -3046,17 +3053,18 @@
 
             case 6:
               json = _context3.sent;
-              console.log('json', json);
 
               if (!(!json || json.msg !== 'success')) {
-                _context3.next = 11;
+                _context3.next = 10;
                 break;
               }
 
-              alert('There was a problem downloading the results');
+              // Todo: This could use a generic alert library instead
+              alert('There was a problem downloading the results'); // eslint-disable-line no-alert
+
               return _context3.abrupt("return");
 
-            case 11:
+            case 10:
               payload = json.payload, _json$info = json.info, numResults = _json$info.results, pages = _json$info.pages, currentPage = _json$info.current_page; // $('#page')[0].value = currentPage;
               // $('#page')[0].max = pages;
               // Unused properties:
@@ -3093,15 +3101,13 @@
                       var _click = _asyncToGenerator(
                       /*#__PURE__*/
                       regeneratorRuntime.mark(function _callee2(e) {
-                        var _this$dataset, svgURL, id, post, result, svg;
-
+                        var svgurl, post, result, svg;
                         return regeneratorRuntime.wrap(function _callee2$(_context2) {
                           while (1) {
                             switch (_context2.prev = _context2.next) {
                               case 0:
                                 e.preventDefault();
-                                _this$dataset = this.dataset, svgURL = _this$dataset.value, id = _this$dataset.id;
-                                console.log('this', id, svgURL);
+                                svgurl = this.dataset.value; // console.log('this', id, svgurl);
 
                                 post = function post(message) {
                                   // Todo: Make origin customizable as set by opening window
@@ -3114,25 +3120,25 @@
 
                                 post({
                                   name: title,
-                                  id: svgURL
+                                  id: svgurl
                                 });
-                                _context2.next = 7;
-                                return fetch(svgURL);
+                                _context2.next = 6;
+                                return fetch(svgurl);
 
-                              case 7:
+                              case 6:
                                 result = _context2.sent;
-                                _context2.next = 10;
+                                _context2.next = 9;
                                 return result.text();
 
-                              case 10:
+                              case 9:
                                 svg = _context2.sent;
-                                console.log('h', svgURL, svg);
+                                // console.log('url and svg', svgurl, svg);
                                 post({
-                                  href: svgURL,
+                                  href: svgurl,
                                   data: svg
                                 });
 
-                              case 13:
+                              case 11:
                               case "end":
                                 return _context2.stop();
                             }
@@ -3151,7 +3157,7 @@
                   src: svgURL,
                   style: "width: ".concat(imgHW, "; height: ").concat(imgHW, ";")
                 }]]], ['b', [title]], ' ', ['i', [description]], ' ', ['span', ['(ID: ', ['a', {
-                  href: 'javascript: void(0);',
+                  href: jsVoid,
                   dataset: {
                     value: id
                   },
@@ -3170,7 +3176,7 @@
                   return ['span', [' ', queryLink(tag)]];
                 })))];
               })), [['br'], ['br'], currentPage === 1 || pages <= 2 ? '' : ['span', [['a', {
-                href: 'javascript: void(0);',
+                href: jsVoid,
                 $on: {
                   click: function click(e) {
                     e.preventDefault();
@@ -3179,7 +3185,7 @@
                   }
                 }
               }, ['First']], ' ']], currentPage === 1 ? '' : ['span', [['a', {
-                href: 'javascript: void(0);',
+                href: jsVoid,
                 $on: {
                   click: function click(e) {
                     e.preventDefault();
@@ -3188,7 +3194,7 @@
                   }
                 }
               }, ['Prev']], ' ']], currentPage === pages ? '' : ['span', [['a', {
-                href: 'javascript: void(0);',
+                href: jsVoid,
                 $on: {
                   click: function click(e) {
                     e.preventDefault();
@@ -3197,7 +3203,7 @@
                   }
                 }
               }, ['Next']], ' ']], currentPage === pages || pages <= 2 ? '' : ['span', [['a', {
-                href: 'javascript: void(0);',
+                href: jsVoid,
                 $on: {
                   click: function click(e) {
                     e.preventDefault();
@@ -3207,7 +3213,7 @@
                 }
               }, ['Last']], ' ']]]));
 
-            case 14:
+            case 13:
             case "end":
               return _context3.stop();
           }
diff --git a/dist/index-es.js b/dist/index-es.js
index c9805bdc..4bc2fb4d 100644
--- a/dist/index-es.js
+++ b/dist/index-es.js
@@ -194,6 +194,12 @@ function _nonIterableRest() {
 }
 
 // http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
+
+/**
+ *
+ * @param {Event} ev
+ * @returns {undefined}
+ */
 function touchHandler(ev) {
   var changedTouches = ev.changedTouches,
       first = changedTouches[0];
@@ -219,7 +225,8 @@ function touchHandler(ev) {
   var screenX = first.screenX,
       screenY = first.screenY,
       clientX = first.clientX,
-      clientY = first.clientY;
+      clientY = first.clientY; // eslint-disable-line no-shadow
+
   var simulatedEvent = new MouseEvent(type, {
     // Event interface
     bubbles: true,
@@ -312,6 +319,11 @@ var getReverseNS = function getReverseNS() {
 * including the latest spec changes which were implemented in Firefox 43 and
 * Chrome 46.
 */
+
+/* eslint-disable no-shadow, class-methods-use-this */
+// Linting: We avoid `no-shadow` as ESLint thinks these are still available globals
+// Linting: We avoid `class-methods-use-this` as this is a polyfill that must
+//   follow the conventions
 (function () {
   if (!('SVGPathSeg' in window)) {
     // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
@@ -2067,7 +2079,7 @@ var getReverseNS = function getReverseNS() {
             return [];
           }
 
-          var owningPathSegList = this;
+          var owningPathSegList = this; // eslint-disable-line consistent-this
 
           var Builder =
           /*#__PURE__*/
@@ -2417,6 +2429,19 @@ var getReverseNS = function getReverseNS() {
                     return new SVGPathSegClosePath(owningPathSegList);
 
                   case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:
+                    {
+                      var points = {
+                        x1: this._parseNumber(),
+                        y1: this._parseNumber(),
+                        x2: this._parseNumber(),
+                        y2: this._parseNumber(),
+                        x: this._parseNumber(),
+                        y: this._parseNumber()
+                      };
+                      return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                    }
+
+                  case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
                     {
                       var _points = {
                         x1: this._parseNumber(),
@@ -2426,23 +2451,21 @@ var getReverseNS = function getReverseNS() {
                         x: this._parseNumber(),
                         y: this._parseNumber()
                       };
-                      return new SVGPathSegCurvetoCubicRel(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
+                      return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
                     }
 
-                  case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
+                  case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
                     {
                       var _points2 = {
-                        x1: this._parseNumber(),
-                        y1: this._parseNumber(),
                         x2: this._parseNumber(),
                         y2: this._parseNumber(),
                         x: this._parseNumber(),
                         y: this._parseNumber()
                       };
-                      return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points2.x, _points2.y, _points2.x1, _points2.y1, _points2.x2, _points2.y2);
+                      return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points2.x, _points2.y, _points2.x2, _points2.y2);
                     }
 
-                  case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
+                  case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
                     {
                       var _points3 = {
                         x2: this._parseNumber(),
@@ -2450,21 +2473,21 @@ var getReverseNS = function getReverseNS() {
                         x: this._parseNumber(),
                         y: this._parseNumber()
                       };
-                      return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
-                    }
-
-                  case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
-                    {
-                      var _points4 = {
-                        x2: this._parseNumber(),
-                        y2: this._parseNumber(),
-                        x: this._parseNumber(),
-                        y: this._parseNumber()
-                      };
-                      return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points4.x, _points4.y, _points4.x2, _points4.y2);
+                      return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
                     }
 
                   case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:
+                    {
+                      var _points4 = {
+                        x1: this._parseNumber(),
+                        y1: this._parseNumber(),
+                        x: this._parseNumber(),
+                        y: this._parseNumber()
+                      };
+                      return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points4.x, _points4.y, _points4.x1, _points4.y1);
+                    }
+
+                  case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
                     {
                       var _points5 = {
                         x1: this._parseNumber(),
@@ -2472,18 +2495,9 @@ var getReverseNS = function getReverseNS() {
                         x: this._parseNumber(),
                         y: this._parseNumber()
                       };
-                      return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
+                      return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
                     }
 
-                  case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
-                    var points = {
-                      x1: this._parseNumber(),
-                      y1: this._parseNumber(),
-                      x: this._parseNumber(),
-                      y: this._parseNumber()
-                    };
-                    return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
-
                   case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
                     return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
 
@@ -2616,13 +2630,13 @@ var getReverseNS = function getReverseNS() {
 var $ = jQuery;
 
 var supportsSVG_ = function () {
-  return !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;
+  return Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);
 }();
 var _navigator = navigator,
     userAgent = _navigator.userAgent;
 var svg = document.createElementNS(NS.SVG, 'svg'); // Note: Browser sniffing should only be used if no other detection method is possible
 
-var isOpera_ = !!window.opera;
+var isOpera_ = Boolean(window.opera);
 var isWebkit_ = userAgent.includes('AppleWebKit');
 var isGecko_ = userAgent.includes('Gecko/');
 var isIE_ = userAgent.includes('MSIE');
@@ -2632,11 +2646,11 @@ var isMac_ = userAgent.includes('Macintosh');
 var isTouch_ = 'ontouchstart' in window;
 
 var supportsSelectors_ = function () {
-  return !!svg.querySelector;
+  return Boolean(svg.querySelector);
 }();
 
 var supportsXpath_ = function () {
-  return !!document.evaluate;
+  return Boolean(document.evaluate);
 }(); // segList functions (for FF1.5 and 2.0)
 
 
@@ -2899,7 +2913,7 @@ var supportsNativeTransformLists = function supportsNativeTransformLists() {
 * @param {external:jQuery} $ The jQuery object to which to add the plug-in
 * @returns {external:jQuery}
 */
-function jqPluginSVG ($) {
+function jQueryPluginSVG($) {
   var proxied = $.fn.attr,
       svgns = 'http://www.w3.org/2000/svg';
   /**
@@ -2917,7 +2931,7 @@ function jqPluginSVG ($) {
     var len = this.length;
 
     if (!len) {
-      return proxied.apply(this, arguments);
+      return proxied.call(this, key, value);
     }
 
     for (var i = 0; i < len; ++i) {
@@ -2968,7 +2982,7 @@ function jqPluginSVG ($) {
           return _attr;
         }
       } else {
-        return proxied.apply(this, arguments);
+        return proxied.call(this, key, value);
       }
     }
 
@@ -2978,7 +2992,12 @@ function jqPluginSVG ($) {
   return $;
 }
 
-var svgroot = document.createElementNS(NS.SVG, 'svg'); // Helper function.
+var svgroot = document.createElementNS(NS.SVG, 'svg');
+/**
+ * Helper function to convert `SVGTransform` to a string.
+ * @param {SVGTransform} xform
+ * @returns {string}
+ */
 
 function transformToString(xform) {
   var m = xform.matrix;
@@ -3102,11 +3121,14 @@ var listMap_ = {};
 * These methods do not currently raise any exceptions.
 * These methods also do not check that transforms are being inserted.  This is basically
 * implementing as much of SVGTransformList that we need to get the job done.
+* @implements {module:SVGTransformList.SVGEditTransformList}
 */
 
 var SVGTransformList =
 /*#__PURE__*/
 function () {
+  // eslint-disable-line no-shadow
+
   /**
   * @param {Element} elem
   */
@@ -3177,7 +3199,7 @@ function () {
               values.push(0, 0);
             }
 
-            xform[fname].apply(xform, values);
+            xform[fname].apply(xform, _toConsumableArray(values));
 
             _this._list.appendItem(xform);
           })();
@@ -3189,23 +3211,16 @@ function () {
       if (item) {
         // Check if this transform is already in a transformlist, and
         // remove it if so.
-        var found = false;
-
-        for (var id in listMap_) {
-          var tl = listMap_[id];
-
+        Object.values(listMap_).some(function (tl) {
           for (var i = 0, len = tl._xforms.length; i < len; ++i) {
             if (tl._xforms[i] === item) {
-              found = true;
               tl.removeItem(i);
-              break;
+              return true;
             }
           }
 
-          if (found) {
-            break;
-          }
-        }
+          return false;
+        });
       }
     };
 
@@ -3388,6 +3403,7 @@ var resetListMap = function resetListMap() {
  */
 
 var removeElementFromListMap = function removeElementFromListMap(elem) {
+  // eslint-disable-line import/no-mutable-exports
   if (elem.id && listMap_[elem.id]) {
     delete listMap_[elem.id];
   }
@@ -3471,7 +3487,7 @@ var typeMap_ = {};
 
 /**
  * @function module:units.ElementContainer#getElement
- * @returns {Element} An element in the container given an id
+ * @returns {?Element} An element in the container given an id
  */
 
 /**
@@ -3568,8 +3584,7 @@ var shortFloat = function shortFloat(val) {
   var digits = elementContainer_.getRoundDigits();
 
   if (!isNaN(val)) {
-    // Note that + converts to Number
-    return +(+val).toFixed(digits);
+    return Number(Number(val).toFixed(digits));
   }
 
   if (Array.isArray(val)) {
@@ -3709,7 +3724,7 @@ var isValidUnit = function isValidUnit(attr, val, selectedElement) {
 
     try {
       var elem = elementContainer_.getElement(val);
-      result = elem == null || elem === selectedElement;
+      result = isNullish(elem) || elem === selectedElement;
     } catch (e) {}
 
     return result;
@@ -3856,6 +3871,7 @@ function (_Command) {
   _createClass(MoveElementCommand, [{
     key: "type",
     value: function type() {
+      // eslint-disable-line class-methods-use-this
       return 'svgedit.history.MoveElementCommand';
     }
     /**
@@ -3942,6 +3958,7 @@ function (_Command2) {
   _createClass(InsertElementCommand, [{
     key: "type",
     value: function type() {
+      // eslint-disable-line class-methods-use-this
       return 'svgedit.history.InsertElementCommand';
     }
     /**
@@ -4031,6 +4048,7 @@ function (_Command3) {
   _createClass(RemoveElementCommand, [{
     key: "type",
     value: function type() {
+      // eslint-disable-line class-methods-use-this
       return 'svgedit.history.RemoveElementCommand';
     }
     /**
@@ -4071,9 +4089,9 @@ function (_Command3) {
 
       removeElementFromListMap(this.elem);
 
-      if (this.nextSibling == null) {
+      if (isNullish(this.nextSibling)) {
         if (window.console) {
-          console.log('Error: reference element was lost');
+          console.log('Error: reference element was lost'); // eslint-disable-line no-console
         }
       }
 
@@ -4146,6 +4164,7 @@ function (_Command4) {
   _createClass(ChangeElementCommand, [{
     key: "type",
     value: function type() {
+      // eslint-disable-line class-methods-use-this
       return 'svgedit.history.ChangeElementCommand';
     }
     /**
@@ -4158,35 +4177,38 @@ function (_Command4) {
   }, {
     key: "apply",
     value: function apply(handler) {
+      var _this5 = this;
+
       if (handler) {
         handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);
       }
 
       var bChangedTransform = false;
+      Object.entries(this.newValues).forEach(function (_ref) {
+        var _ref2 = _slicedToArray(_ref, 2),
+            attr = _ref2[0],
+            value = _ref2[1];
 
-      for (var attr in this.newValues) {
-        if (this.newValues[attr]) {
+        if (value) {
           if (attr === '#text') {
-            this.elem.textContent = this.newValues[attr];
+            _this5.elem.textContent = value;
           } else if (attr === '#href') {
-            setHref(this.elem, this.newValues[attr]);
+            setHref(_this5.elem, value);
           } else {
-            this.elem.setAttribute(attr, this.newValues[attr]);
+            _this5.elem.setAttribute(attr, value);
           }
+        } else if (attr === '#text') {
+          _this5.elem.textContent = '';
         } else {
-          if (attr === '#text') {
-            this.elem.textContent = '';
-          } else {
-            this.elem.setAttribute(attr, '');
-            this.elem.removeAttribute(attr);
-          }
+          _this5.elem.setAttribute(attr, '');
+
+          _this5.elem.removeAttribute(attr);
         }
 
         if (attr === 'transform') {
           bChangedTransform = true;
         }
-      } // relocate rotational transform, if necessary
-
+      }); // relocate rotational transform, if necessary
 
       if (!bChangedTransform) {
         var angle = getRotationAngle(this.elem);
@@ -4219,34 +4241,36 @@ function (_Command4) {
   }, {
     key: "unapply",
     value: function unapply(handler) {
+      var _this6 = this;
+
       if (handler) {
         handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);
       }
 
       var bChangedTransform = false;
+      Object.entries(this.oldValues).forEach(function (_ref3) {
+        var _ref4 = _slicedToArray(_ref3, 2),
+            attr = _ref4[0],
+            value = _ref4[1];
 
-      for (var attr in this.oldValues) {
-        if (this.oldValues[attr]) {
+        if (value) {
           if (attr === '#text') {
-            this.elem.textContent = this.oldValues[attr];
+            _this6.elem.textContent = value;
           } else if (attr === '#href') {
-            setHref(this.elem, this.oldValues[attr]);
+            setHref(_this6.elem, value);
           } else {
-            this.elem.setAttribute(attr, this.oldValues[attr]);
+            _this6.elem.setAttribute(attr, value);
           }
+        } else if (attr === '#text') {
+          _this6.elem.textContent = '';
         } else {
-          if (attr === '#text') {
-            this.elem.textContent = '';
-          } else {
-            this.elem.removeAttribute(attr);
-          }
+          _this6.elem.removeAttribute(attr);
         }
 
         if (attr === 'transform') {
           bChangedTransform = true;
         }
-      } // relocate rotational transform, if necessary
-
+      }); // relocate rotational transform, if necessary
 
       if (!bChangedTransform) {
         var angle = getRotationAngle(this.elem);
@@ -4303,19 +4327,20 @@ function (_Command5) {
   * @param {string} [text] - An optional string visible to user related to this change
   */
   function BatchCommand(text) {
-    var _this5;
+    var _this7;
 
     _classCallCheck(this, BatchCommand);
 
-    _this5 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
-    _this5.text = text || 'Batch Command';
-    _this5.stack = [];
-    return _this5;
+    _this7 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
+    _this7.text = text || 'Batch Command';
+    _this7.stack = [];
+    return _this7;
   }
 
   _createClass(BatchCommand, [{
     key: "type",
     value: function type() {
+      // eslint-disable-line class-methods-use-this
       return 'svgedit.history.BatchCommand';
     }
     /**
@@ -4552,7 +4577,7 @@ function () {
       while (i--) {
         var elem = elems[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           continue;
         }
 
@@ -4585,7 +4610,7 @@ function () {
       while (i--) {
         var elem = changeset.elements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           continue;
         }
 
@@ -4605,7 +4630,7 @@ function () {
   return UndoManager;
 }();
 
-var history = /*#__PURE__*/Object.freeze({
+var hstry = /*#__PURE__*/Object.freeze({
   HistoryEventTypes: HistoryEventTypes,
   MoveElementCommand: MoveElementCommand,
   InsertElementCommand: InsertElementCommand,
@@ -4773,15 +4798,15 @@ var transformBox = function transformBox(l, t, w, h, m) {
 */
 
 var transformListToTransform = function transformListToTransform(tlist, min, max) {
-  if (tlist == null) {
+  if (isNullish(tlist)) {
     // Or should tlist = null have been prevented before this?
     return svg$1.createSVGTransformFromMatrix(svg$1.createSVGMatrix());
   }
 
   min = min || 0;
   max = max || tlist.numberOfItems - 1;
-  min = parseInt(min, 10);
-  max = parseInt(max, 10);
+  min = parseInt(min);
+  max = parseInt(max);
 
   if (min > max) {
     var temp = max;
@@ -4904,7 +4929,8 @@ var setLinkControlPoints = function setLinkControlPoints(lcp) {
  * @memberof module:path
 */
 
-var path = null;
+var path = null; // eslint-disable-line import/no-mutable-exports
+
 var editorContext_ = null;
 /**
 * @external MouseEvent
@@ -5156,14 +5182,14 @@ var ptObjToArr = function ptObjToArr(type, segItem) {
 */
 
 var getGripPt = function getGripPt(seg, altPt) {
-  var path = seg.path;
+  var pth = seg.path;
   var out = {
     x: altPt ? altPt.x : seg.item.x,
     y: altPt ? altPt.y : seg.item.y
   };
 
-  if (path.matrix) {
-    var pt = transformPoint(out.x, out.y, path.matrix);
+  if (pth.matrix) {
+    var pt = transformPoint(out.x, out.y, pth.matrix);
     out = pt;
   }
 
@@ -5175,18 +5201,18 @@ var getGripPt = function getGripPt(seg, altPt) {
 /**
 * @function module:path.getPointFromGrip
 * @param {module:math.XYObject} pt
-* @param {module:path.Path} path
+* @param {module:path.Path} pth
 * @returns {module:math.XYObject}
 */
 
-var getPointFromGrip = function getPointFromGrip(pt, path) {
+var getPointFromGrip = function getPointFromGrip(pt, pth) {
   var out = {
     x: pt.x,
     y: pt.y
   };
 
-  if (path.matrix) {
-    pt = transformPoint(out.x, out.y, path.imatrix);
+  if (pth.matrix) {
+    pt = transformPoint(out.x, out.y, pth.imatrix);
     out.x = pt.x;
     out.y = pt.y;
   }
@@ -5259,8 +5285,8 @@ var getGripContainer = function getGripContainer() {
   var c = getElem('pathpointgrip_container');
 
   if (!c) {
-    var parent = getElem('selectorParentGroup');
-    c = parent.appendChild(document.createElementNS(NS.SVG, 'g'));
+    var parentElement = getElem('selectorParentGroup');
+    c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));
     c.id = 'pathpointgrip_container';
   }
 
@@ -5413,7 +5439,7 @@ var getControlPoints = function getControlPoints(seg) {
 var replacePathSeg = function replacePathSeg(type, index, pts, elem) {
   var pth = elem || path.elem;
   var func = 'createSVGPathSeg' + pathFuncs[type];
-  var seg = pth[func].apply(pth, pts);
+  var seg = pth[func].apply(pth, _toConsumableArray(pts));
 
   if (supportsPathReplaceItem()) {
     pth.pathSegList.replaceItem(seg, index);
@@ -5479,13 +5505,12 @@ var getSegSelector = function getSegSelector(seg, update) {
     var pts = ptObjToArr(seg.type, seg.item); // , true);
 
     for (var i = 0; i < pts.length; i += 2) {
-      var _pt = getGripPt(seg, {
+      var point = getGripPt(seg, {
         x: pts[i],
         y: pts[i + 1]
       });
-
-      pts[i] = _pt.x;
-      pts[i + 1] = _pt.y;
+      pts[i] = point.x;
+      pts[i + 1] = point.y;
     }
 
     replacePathSeg(seg.type, 1, pts, segLine);
@@ -5586,7 +5611,7 @@ function () {
     key: "showCtrlPts",
     value: function showCtrlPts(y) {
       for (var i in this.ctrlpts) {
-        if (this.ctrlpts.hasOwnProperty(i)) {
+        if ({}.hasOwnProperty.call(this.ctrlpts, i)) {
           this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');
         }
       }
@@ -5696,8 +5721,8 @@ function () {
       if (this.mate) {
         // The last point of a closed subpath has a 'mate',
         // which is the 'M' segment of the subpath
-        var _item = this.mate.item;
-        var pts = [_item.x += dx, _item.y += dy];
+        var itm = this.mate.item;
+        var pts = [itm.x += dx, itm.y += dy];
         replacePathSeg(this.mate.type, this.mate.index, pts); // Has no grip, so does not need 'updating'?
       }
 
@@ -5803,7 +5828,8 @@ function () {
     this.elem = elem;
     this.segs = [];
     this.selected_pts = [];
-    path = this;
+    path = this; // eslint-disable-line consistent-this
+
     this.init();
   }
   /**
@@ -5862,7 +5888,7 @@ function () {
           seg.mate = segs[startI];
           seg.addGrip();
 
-          if (this.first_seg == null) {
+          if (isNullish(this.first_seg)) {
             this.first_seg = seg;
           }
         } else if (!nextSeg) {
@@ -5899,7 +5925,7 @@ function () {
     * @callback module:path.PathEachSegCallback
     * @this module:path.Segment
     * @param {Integer} i The index of the seg being iterated
-    * @returns {boolean} Will stop execution of `eachSeg` if returns `false`
+    * @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`
     */
 
     /**
@@ -5995,8 +6021,8 @@ function () {
       } else if (!seg.prev) {
         // First node of open path, make next point the M
         // const {item} = seg;
-        var _pt2 = [next.item.x, next.item.y];
-        replacePathSeg(2, seg.next.index, _pt2);
+        var _pt = [next.item.x, next.item.y];
+        replacePathSeg(2, seg.next.index, _pt);
         list.removeItem(index);
       } else {
         list.removeItem(index);
@@ -6004,34 +6030,6 @@ function () {
     }
     /**
     * @param {Integer} index
-    * @returns {boolean}
-    */
-
-  }, {
-    key: "subpathIsClosed",
-    value: function subpathIsClosed(index) {
-      var closed = false; // Check if subpath is already open
-
-      path.eachSeg(function (i) {
-        if (i <= index) {
-          return true;
-        }
-
-        if (this.type === 2) {
-          // Found M first, so open
-          return false;
-        }
-
-        if (this.type === 1) {
-          // Found Z first, so closed
-          closed = true;
-          return false;
-        }
-      });
-      return closed;
-    }
-    /**
-    * @param {Integer} index
     * @returns {undefined}
     */
 
@@ -6212,7 +6210,7 @@ function () {
     value: function selectPt(pt, ctrlNum) {
       this.clearSelection();
 
-      if (pt == null) {
+      if (isNullish(pt)) {
         this.eachSeg(function (i) {
           // 'this' is the segment here.
           if (this.prev) {
@@ -6312,7 +6310,7 @@ function () {
         grips[i] = _seg2.ptgrip;
       }
 
-      var closedSubpath = this.subpathIsClosed(this.selected_pts[0]);
+      var closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);
       editorContext_.addPtsToSelection({
         grips: grips,
         closedSubpath: closedSubpath
@@ -6323,11 +6321,40 @@ function () {
   return Path;
 }();
 /**
+* @param {Integer} index
+* @returns {boolean}
+*/
+
+Path.subpathIsClosed = function (index) {
+  var clsd = false; // Check if subpath is already open
+
+  path.eachSeg(function (i) {
+    if (i <= index) {
+      return true;
+    }
+
+    if (this.type === 2) {
+      // Found M first, so open
+      return false;
+    }
+
+    if (this.type === 1) {
+      // Found Z first, so closed
+      clsd = true;
+      return false;
+    }
+
+    return true;
+  });
+  return clsd;
+};
+/**
 * @function module:path.getPath_
 * @param {SVGPathElement} elem
 * @returns {module:path.Path}
 */
 
+
 var getPath_ = function getPath_(elem) {
   var p = pathData[elem.id];
 
@@ -6420,7 +6447,7 @@ var recalcRotatedPath = function recalcRotatedPath() {
     var rvals = getRotVals(seg.x, seg.y),
         points = [rvals.x, rvals.y];
 
-    if (seg.x1 != null && seg.x2 != null) {
+    if (!isNullish(seg.x1) && !isNullish(seg.x2)) {
       var cVals1 = getRotVals(seg.x1, seg.y1);
       var cVals2 = getRotVals(seg.x2, seg.y2);
       points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);
@@ -6508,21 +6535,21 @@ var pathMap = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a', 'H', 'h
  * Convert a path to one with only absolute or relative values.
  * @todo move to pathActions.js
  * @function module:path.convertPath
- * @param {SVGPathElement} path - the path to convert
+ * @param {SVGPathElement} pth - the path to convert
  * @param {boolean} toRel - true of convert to relative
  * @returns {string}
  */
 
-var convertPath = function convertPath(path, toRel) {
-  var segList = path.pathSegList;
-  var len = segList.numberOfItems;
+var convertPath = function convertPath(pth, toRel) {
+  var pathSegList = pth.pathSegList;
+  var len = pathSegList.numberOfItems;
   var curx = 0,
       cury = 0;
   var d = '';
   var lastM = null;
 
   for (var i = 0; i < len; ++i) {
-    var seg = segList.getItem(i); // if these properties are not in the segment, set them to zero
+    var seg = pathSegList.getItem(i); // if these properties are not in the segment, set them to zero
 
     var x = seg.x || 0,
         y = seg.y || 0,
@@ -6855,7 +6882,7 @@ var pathActions = function () {
       * @param {Element} mouseTarget
       * @param {Float} startX
       * @param {Float} startY
-      * @returns {undefined}
+      * @returns {boolean|undefined}
       */
       mouseDown: function mouseDown(evt, mouseTarget, startX, startY) {
         var id;
@@ -6999,7 +7026,7 @@ var pathActions = function () {
               // Checks if current target or parents are #svgcontent
               if (!$$1.contains(editorContext_.getContainer(), editorContext_.getMouseTarget(evt))) {
                 // Clicked outside canvas, so don't make point
-                console.log('Clicked outside canvas');
+                // console.log('Clicked outside canvas');
                 return false;
               }
 
@@ -7039,12 +7066,12 @@ var pathActions = function () {
 
           }
 
-          return;
+          return undefined;
         } // TODO: Make sure currentPath isn't null at this point
 
 
         if (!path) {
-          return;
+          return undefined;
         }
 
         path.storeD();
@@ -7053,7 +7080,7 @@ var pathActions = function () {
 
         if (id.substr(0, 14) === 'pathpointgrip_') {
           // Select this point
-          curPt = path.cur_pt = parseInt(id.substr(14), 10);
+          curPt = path.cur_pt = parseInt(id.substr(14));
           path.dragging = [startX, startY];
           var seg = path.segs[curPt]; // only clear selection if shift is not pressed (otherwise, add
           // node to selection)
@@ -7081,7 +7108,7 @@ var pathActions = function () {
         if (!path.dragging) {
           var rubberBox = editorContext_.getRubberBox();
 
-          if (rubberBox == null) {
+          if (isNullish(rubberBox)) {
             rubberBox = editorContext_.setRubberBox(editorContext_.selectorManager.getRubberBandBox());
           }
 
@@ -7095,6 +7122,8 @@ var pathActions = function () {
             display: 'inline'
           }, 100);
         }
+
+        return undefined;
       },
 
       /**
@@ -7205,7 +7234,7 @@ var pathActions = function () {
         } else {
           path.selected_pts = [];
           path.eachSeg(function (i) {
-            var seg = this;
+            var seg = this; // eslint-disable-line consistent-this
 
             if (!seg.next && !seg.prev) {
               return;
@@ -7231,12 +7260,19 @@ var pathActions = function () {
         }
       },
 
+      /**
+       * @typedef module:path.keepElement
+       * @type {PlainObject}
+       * @property {boolean} keep
+       * @property {Element} element
+       */
+
       /**
       * @param {Event} evt
       * @param {Element} element
       * @param {Float} mouseX
       * @param {Float} mouseY
-      * @returns {undefined}
+      * @returns {module:path.keepElement|undefined}
       */
       mouseUp: function mouseUp(evt, element, mouseX, mouseY) {
         var drawnPath = editorContext_.getDrawnPath(); // Create mode
@@ -7285,6 +7321,7 @@ var pathActions = function () {
         }
 
         hasMoved = false;
+        return undefined;
       },
 
       /**
@@ -7363,9 +7400,9 @@ var pathActions = function () {
           return;
         }
 
-        var angle = getRotationAngle(elem);
+        var angl = getRotationAngle(elem);
 
-        if (angle === 0) {
+        if (angl === 0) {
           return;
         }
 
@@ -7415,7 +7452,7 @@ var pathActions = function () {
       * @returns {false|undefined}
       */
       resetOrientation: function resetOrientation(pth) {
-        if (pth == null || pth.nodeName !== 'path') {
+        if (isNullish(pth) || pth.nodeName !== 'path') {
           return false;
         }
 
@@ -7464,6 +7501,7 @@ var pathActions = function () {
         }
 
         reorientGrads(pth, m);
+        return undefined;
       },
 
       /**
@@ -7562,9 +7600,11 @@ var pathActions = function () {
             openPt = false;
             return false;
           }
+
+          return true;
         });
 
-        if (openPt == null) {
+        if (isNullish(openPt)) {
           // Single path, so close last seg
           openPt = path.segs.length - 1;
         }
@@ -7812,7 +7852,7 @@ var pathActions = function () {
   );
 }(); // end pathActions
 
-var $$2 = jqPluginSVG(jQuery); // String used to encode base64.
+var $$2 = jQueryPluginSVG(jQuery); // String used to encode base64.
 
 var KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; // Much faster than running getBBox() every time
 
@@ -7932,7 +7972,7 @@ var toXml = function toXml(str) {
 * @returns {string} Base64 output
 */
 
-var encode64 = function encode64(input) {
+function encode64(input) {
   // base64 strings are 4/3 larger than the original string
   input = encodeUTF8(input); // convert non-ASCII characters
   // input = convertToXMLReferences(input);
@@ -7941,8 +7981,7 @@ var encode64 = function encode64(input) {
     return window.btoa(input); // Use native if available
   }
 
-  var output = [];
-  output.length = Math.floor((input.length + 2) / 3) * 4;
+  var output = new Array(Math.floor((input.length + 2) / 3) * 4);
   var i = 0,
       p = 0;
 
@@ -7950,13 +7989,17 @@ var encode64 = function encode64(input) {
     var chr1 = input.charCodeAt(i++);
     var chr2 = input.charCodeAt(i++);
     var chr3 = input.charCodeAt(i++);
+    /* eslint-disable no-bitwise */
+
     var enc1 = chr1 >> 2;
     var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
     var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
     var enc4 = chr3 & 63;
+    /* eslint-enable no-bitwise */
 
     if (isNaN(chr2)) {
-      enc3 = enc4 = 64;
+      enc3 = 64;
+      enc4 = 64;
     } else if (isNaN(chr3)) {
       enc4 = 64;
     }
@@ -7968,7 +8011,7 @@ var encode64 = function encode64(input) {
   } while (i < input.length);
 
   return output.join('');
-};
+}
 /**
 * Converts a string from base64.
 * @function module:utilities.decode64
@@ -7976,7 +8019,7 @@ var encode64 = function encode64(input) {
 * @returns {string} Decoded output
 */
 
-var decode64 = function decode64(input) {
+function decode64(input) {
   if (window.atob) {
     return decodeUTF8(window.atob(input));
   } // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
@@ -7991,31 +8034,35 @@ var decode64 = function decode64(input) {
     var enc2 = KEYSTR.indexOf(input.charAt(i++));
     var enc3 = KEYSTR.indexOf(input.charAt(i++));
     var enc4 = KEYSTR.indexOf(input.charAt(i++));
+    /* eslint-disable no-bitwise */
+
     var chr1 = enc1 << 2 | enc2 >> 4;
     var chr2 = (enc2 & 15) << 4 | enc3 >> 2;
     var chr3 = (enc3 & 3) << 6 | enc4;
+    /* eslint-enable no-bitwise */
+
     output += String.fromCharCode(chr1);
 
     if (enc3 !== 64) {
-      output = output + String.fromCharCode(chr2);
+      output += String.fromCharCode(chr2);
     }
 
     if (enc4 !== 64) {
-      output = output + String.fromCharCode(chr3);
+      output += String.fromCharCode(chr3);
     }
   } while (i < input.length);
 
   return decodeUTF8(output);
-};
+}
 /**
 * @function module:utilities.decodeUTF8
 * @param {string} argString
 * @returns {string}
 */
 
-var decodeUTF8 = function decodeUTF8(argString) {
+function decodeUTF8(argString) {
   return decodeURIComponent(escape(argString));
-}; // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
+} // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
 
 /**
 * @function module:utilities.encodeUTF8
@@ -8224,6 +8271,7 @@ var getUrlFromAttr = function getUrlFromAttr(attrVal) {
 */
 
 var getHref = function getHref(elem) {
+  // eslint-disable-line import/no-mutable-exports
   return elem.getAttributeNS(NS.XLINK, 'href');
 };
 /**
@@ -8235,6 +8283,7 @@ var getHref = function getHref(elem) {
 */
 
 var setHref = function setHref(elem, val) {
+  // eslint-disable-line import/no-mutable-exports
   elem.setAttributeNS(NS.XLINK, 'xlink:href', val);
 };
 /**
@@ -8277,6 +8326,12 @@ var getPathBBox = function getPathBBox(path$$1) {
   var start = seglist.getItem(0);
   var P0 = [start.x, start.y];
 
+  var getCalc = function getCalc(j, P1, P2, P3) {
+    return function (t) {
+      return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
+    };
+  };
+
   for (var i = 0; i < tot; i++) {
     var seg = seglist.getItem(i);
 
@@ -8289,61 +8344,50 @@ var getPathBBox = function getPathBBox(path$$1) {
     bounds[1].push(P0[1]);
 
     if (seg.x1) {
-      (function () {
-        var P1 = [seg.x1, seg.y1],
-            P2 = [seg.x2, seg.y2],
-            P3 = [seg.x, seg.y];
+      var P1 = [seg.x1, seg.y1],
+          P2 = [seg.x2, seg.y2],
+          P3 = [seg.x, seg.y];
 
-        var _loop = function _loop(j) {
-          var calc = function calc(t) {
-            return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
-          };
+      for (var j = 0; j < 2; j++) {
+        var calc = getCalc(j, P1, P2, P3);
+        var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
+        var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
+        var c = 3 * P1[j] - 3 * P0[j];
 
-          var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
-          var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
-          var c = 3 * P1[j] - 3 * P0[j];
-
-          if (a === 0) {
-            if (b === 0) {
-              return "continue";
-            }
-
-            var t = -c / b;
-
-            if (t > 0 && t < 1) {
-              bounds[j].push(calc(t));
-            }
-
-            return "continue";
+        if (a === 0) {
+          if (b === 0) {
+            continue;
           }
 
-          var b2ac = Math.pow(b, 2) - 4 * c * a;
+          var t = -c / b;
 
-          if (b2ac < 0) {
-            return "continue";
+          if (t > 0 && t < 1) {
+            bounds[j].push(calc(t));
           }
 
-          var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
-
-          if (t1 > 0 && t1 < 1) {
-            bounds[j].push(calc(t1));
-          }
-
-          var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
-
-          if (t2 > 0 && t2 < 1) {
-            bounds[j].push(calc(t2));
-          }
-        };
-
-        for (var j = 0; j < 2; j++) {
-          var _ret = _loop(j);
-
-          if (_ret === "continue") continue;
+          continue;
         }
 
-        P0 = P3;
-      })();
+        var b2ac = Math.pow(b, 2) - 4 * c * a;
+
+        if (b2ac < 0) {
+          continue;
+        }
+
+        var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
+
+        if (t1 > 0 && t1 < 1) {
+          bounds[j].push(calc(t1));
+        }
+
+        var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
+
+        if (t2 > 0 && t2 < 1) {
+          bounds[j].push(calc(t2));
+        }
+      }
+
+      P0 = P3;
     } else {
       bounds[0].push(seg.x);
       bounds[1].push(seg.y);
@@ -8442,10 +8486,8 @@ var getBBox = function getBBox(elem) {
 
         ret = selected.getBBox();
         selected.textContent = '';
-      } else {
-        if (selected.getBBox) {
-          ret = selected.getBBox();
-        }
+      } else if (selected.getBBox) {
+        ret = selected.getBBox();
       }
 
       break;
@@ -8453,10 +8495,8 @@ var getBBox = function getBBox(elem) {
     case 'path':
       if (!supportsPathBBox()) {
         ret = getPathBBox(selected);
-      } else {
-        if (selected.getBBox) {
-          ret = selected.getBBox();
-        }
+      } else if (selected.getBBox) {
+        ret = selected.getBBox();
       }
 
       break;
@@ -8571,21 +8611,24 @@ var getPathDFromElement = function getPathDFromElement(elem) {
   switch (elem.tagName) {
     case 'ellipse':
     case 'circle':
-      a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
-      var _a = a,
-          cx = _a.cx,
-          cy = _a.cy;
-      var _a2 = a;
-      rx = _a2.rx;
-      ry = _a2.ry;
+      {
+        a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
+        var _a = a,
+            cx = _a.cx,
+            cy = _a.cy;
+        var _a2 = a;
+        rx = _a2.rx;
+        ry = _a2.ry;
 
-      if (elem.tagName === 'circle') {
-        rx = ry = $$2(elem).attr('r');
+        if (elem.tagName === 'circle') {
+          ry = $$2(elem).attr('r');
+          rx = ry;
+        }
+
+        d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
+        break;
       }
 
-      d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
-      break;
-
     case 'path':
       d = elem.getAttribute('d');
       break;
@@ -8604,25 +8647,27 @@ var getPathDFromElement = function getPathDFromElement(elem) {
       break;
 
     case 'rect':
-      var r = $$2(elem).attr(['rx', 'ry']);
-      rx = r.rx;
-      ry = r.ry;
-      var b = elem.getBBox();
-      var x = b.x,
-          y = b.y,
-          w = b.width,
-          h = b.height;
-      num = 4 - num; // Why? Because!
+      {
+        var r = $$2(elem).attr(['rx', 'ry']);
+        rx = r.rx;
+        ry = r.ry;
+        var b = elem.getBBox();
+        var x = b.x,
+            y = b.y,
+            w = b.width,
+            h = b.height;
+        num = 4 - num; // Why? Because!
 
-      if (!rx && !ry) {
-        // Regular rect
-        d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
-      } else {
-        d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+        if (!rx && !ry) {
+          // Regular rect
+          d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
+        } else {
+          d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+        }
+
+        break;
       }
 
-      break;
-
     default:
       break;
   }
@@ -8669,12 +8714,12 @@ var getBBoxOfElementAsPath = function getBBoxOfElementAsPath(elem, addSVGElement
     path$$1.setAttribute('transform', eltrans);
   }
 
-  var parent = elem.parentNode;
+  var parentNode = elem.parentNode;
 
   if (elem.nextSibling) {
     elem.before(path$$1);
   } else {
-    parent.append(path$$1);
+    parentNode.append(path$$1);
   }
 
   var d = getPathDFromElement(elem);
@@ -8706,13 +8751,13 @@ var getBBoxOfElementAsPath = function getBBoxOfElementAsPath(elem, addSVGElement
 * @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.
 * @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}
 * @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}
-* @param {module:history} history - see history module
+* @param {module:history} hstry - see history module
 * @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}
 * @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.
 */
 
-var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory) {
-  var batchCmd = new history.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
+var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory) {
+  var batchCmd = new hstry.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
 
   attrs = $$2.extend({}, attrs, getExtraAttributesForConvertToPath(elem));
   var path$$1 = addSVGElementFromJson({
@@ -8726,12 +8771,12 @@ var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, p
   }
 
   var id = elem.id;
-  var parent = elem.parentNode;
+  var parentNode = elem.parentNode;
 
   if (elem.nextSibling) {
     elem.before(path$$1);
   } else {
-    parent.append(path$$1);
+    parentNode.append(path$$1);
   }
 
   var d = getPathDFromElement(elem);
@@ -8749,8 +8794,8 @@ var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, p
     }
 
     var nextSibling = elem.nextSibling;
-    batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));
-    batchCmd.addSubCommand(new history.InsertElementCommand(path$$1));
+    batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));
+    batchCmd.addSubCommand(new hstry.InsertElementCommand(path$$1));
     clearSelection();
     elem.remove();
     path$$1.setAttribute('id', id);
@@ -8781,15 +8826,15 @@ var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, p
 * getBBox then apply the angle and any transforms.
 *
 * @param {Float} angle - The rotation angle in degrees
-* @param {boolean} hasMatrixTransform - True if there is a matrix transform
+* @param {boolean} hasAMatrixTransform - True if there is a matrix transform
 * @returns {boolean} True if the bbox can be optimized.
 */
 
-function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixTransform$$1) {
+function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasAMatrixTransform) {
   var angleModulo90 = angle % 90;
   var closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;
   var closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;
-  return hasMatrixTransform$$1 || !(closeTo0 || closeTo90);
+  return hasAMatrixTransform || !(closeTo0 || closeTo90);
 }
 /**
 * Get bounding box that includes any transforms.
@@ -8824,14 +8869,16 @@ var getBBoxWithTransform = function getBBoxWithTransform(elem, addSVGElementFrom
       var elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];
 
       if (elemNames.includes(elem.tagName)) {
-        bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+        goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+        bb = goodBb;
       } else if (elem.tagName === 'rect') {
         // Look for radius
         var rx = elem.getAttribute('rx');
         var ry = elem.getAttribute('ry');
 
         if (rx || ry) {
-          bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          bb = goodBb;
         }
       }
     }
@@ -8857,7 +8904,13 @@ var getBBoxWithTransform = function getBBoxWithTransform(elem, addSVGElementFrom
   }
 
   return bb;
-}; // TODO: This is problematic with large stroke-width and, for example, a single horizontal line. The calculated BBox extends way beyond left and right sides.
+};
+/**
+ * @param {Element} elem
+ * @returns {Float}
+ * @todo This is problematic with large stroke-width and, for example, a single
+ * horizontal line. The calculated BBox extends way beyond left and right sides.
+ */
 
 function getStrokeOffsetForBBox(elem) {
   var sw = elem.getAttribute('stroke-width');
@@ -8945,17 +8998,17 @@ var getStrokedBBox = function getStrokedBBox(elems, addSVGElementFromJson, pathA
 * Note that 0-opacity, off-screen etc elements are still considered "visible"
 * for this function.
 * @function module:utilities.getVisibleElements
-* @param {Element} parent - The parent DOM element to search within
+* @param {Element} parentElement - The parent DOM element to search within
 * @returns {Element[]} All "visible" elements.
 */
 
-var getVisibleElements = function getVisibleElements(parent) {
-  if (!parent) {
-    parent = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
+var getVisibleElements = function getVisibleElements(parentElement) {
+  if (!parentElement) {
+    parentElement = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
   }
 
   var contentElems = [];
-  $$2(parent).children().each(function (i, elem) {
+  $$2(parentElement).children().each(function (i, elem) {
     if (elem.getBBox) {
       contentElems.push(elem);
     }
@@ -9011,6 +9064,7 @@ var getRotationAngleFromTransformList = function getRotationAngleFromTransformLi
 */
 
 var getRotationAngle = function getRotationAngle(elem, toRad) {
+  // eslint-disable-line import/no-mutable-exports
   var selected = elem || editorContext_$1.getSelectedElements()[0]; // find the rotation transform (if any) and set it
 
   var tlist = getTransformList(selected);
@@ -9030,7 +9084,7 @@ var getRefElem = function getRefElem(attrVal) {
 * Get a DOM element by ID within the SVG root element.
 * @function module:utilities.getElem
 * @param {string} id - String with the element's new ID
-* @returns {Element}
+* @returns {?Element}
 */
 
 var getElem = supportsSelectors() ? function (id) {
@@ -9102,13 +9156,15 @@ var cleanupElement = function cleanupElement(element) {
     delete defaults.ry;
   }
 
-  for (var attr in defaults) {
-    var val = defaults[attr];
+  Object.entries(defaults).forEach(function (_ref4) {
+    var _ref5 = _slicedToArray(_ref4, 2),
+        attr = _ref5[0],
+        val = _ref5[1];
 
     if (element.getAttribute(attr) === String(val)) {
       element.removeAttribute(attr);
     }
-  }
+  });
 };
 /**
 * Round value to for snapping.
@@ -9211,6 +9267,15 @@ var copyElem = function copyElem(el, getNextId) {
 
   return newEl;
 };
+/**
+ * Whether a value is `null` or `undefined`.
+ * @param {Any} val
+ * @returns {boolean}
+ */
+
+var isNullish = function isNullish(val) {
+  return val === null || val === undefined;
+};
 
 /* globals jQuery */
 
@@ -9264,9 +9329,9 @@ var injectExtendedContextMenuItemIntoDom = function injectExtendedContextMenuIte
 
 
 var injectExtendedContextMenuItemsIntoDom = function injectExtendedContextMenuItemsIntoDom() {
-  for (var menuItem in contextMenuExtensions) {
-    injectExtendedContextMenuItemIntoDom(contextMenuExtensions[menuItem]);
-  }
+  Object.values(contextMenuExtensions).forEach(function (menuItem) {
+    injectExtendedContextMenuItemIntoDom(menuItem);
+  });
 };
 
 // MIT License
@@ -9275,12 +9340,25 @@ var injectExtendedContextMenuItemsIntoDom = function injectExtendedContextMenuIt
 /**
  * @module importModule
  */
+
+/**
+ * Converts a possible relative URL into an absolute one.
+ * @param {string} url
+ * @returns {string}
+ */
 function toAbsoluteURL(url) {
   var a = document.createElement('a');
   a.setAttribute('href', url); // <a href="hoge.html">
 
   return a.cloneNode(false).href; // -> "http://example.com/hoge.html"
 }
+/**
+ * Add any of the whitelisted attributes to the script tag.
+ * @param {HTMLScriptElement} script
+ * @param {PlainObject.<string, string>} atts
+ * @returns {undefined}
+ */
+
 
 function addScriptAtts(script, atts) {
   ['id', 'class', 'type'].forEach(function (prop) {
@@ -9298,84 +9376,73 @@ function addScriptAtts(script, atts) {
 
 /**
 * @function module:importModule.importSetGlobalDefault
-* @param {string} url
+* @param {string|string[]} url
 * @param {module:importModule.ImportConfig} config
-* @returns {*} The return depends on the export of the targeted module.
+* @returns {Promise} The value to which it resolves depends on the export of the targeted module.
 */
 
 
-function importSetGlobalDefault(_x, _x2) {
-  return _importSetGlobalDefault.apply(this, arguments);
+function importSetGlobalDefault(url, config) {
+  return importSetGlobal(url, _extends({}, config, {
+    returnDefault: true
+  }));
 }
 /**
 * @function module:importModule.importSetGlobal
-* @param {string} url
+* @param {string|string[]} url
 * @param {module:importModule.ImportConfig} config
-* @returns {ArbitraryModule|*} The return depends on the export of the targeted module.
+* @returns {Promise} The promise resolves to either an `ArbitraryModule` or
+*   any other value depends on the export of the targeted module.
 */
 
-function _importSetGlobalDefault() {
-  _importSetGlobalDefault = _asyncToGenerator(
+function importSetGlobal(_x, _x2) {
+  return _importSetGlobal.apply(this, arguments);
+}
+/**
+ *
+ * @author Brett Zamir (other items are from `dynamic-import-polyfill`)
+ * @param {string|string[]} url
+ * @param {PlainObject} [atts={}]
+ * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a
+ *   script loading error
+ */
+
+function _importSetGlobal() {
+  _importSetGlobal = _asyncToGenerator(
   /*#__PURE__*/
-  regeneratorRuntime.mark(function _callee(url, config) {
+  regeneratorRuntime.mark(function _callee(url, _ref) {
+    var glob, returnDefault, modularVersion;
     return regeneratorRuntime.wrap(function _callee$(_context) {
       while (1) {
         switch (_context.prev = _context.next) {
           case 0:
-            return _context.abrupt("return", importSetGlobal(url, _extends({}, config, {
-              returnDefault: true
-            })));
+            glob = _ref.global, returnDefault = _ref.returnDefault;
+            // Todo: Replace calls to this function with `import()` when supported
+            modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
 
-          case 1:
+            if (!modularVersion) {
+              _context.next = 4;
+              break;
+            }
+
+            return _context.abrupt("return", importModule(url, undefined, {
+              returnDefault: returnDefault
+            }));
+
+          case 4:
+            _context.next = 6;
+            return importScript(url);
+
+          case 6:
+            return _context.abrupt("return", window[glob]);
+
+          case 7:
           case "end":
             return _context.stop();
         }
       }
     }, _callee, this);
   }));
-  return _importSetGlobalDefault.apply(this, arguments);
-}
-
-function importSetGlobal(_x3, _x4) {
-  return _importSetGlobal.apply(this, arguments);
-} // Addition by Brett
-
-function _importSetGlobal() {
-  _importSetGlobal = _asyncToGenerator(
-  /*#__PURE__*/
-  regeneratorRuntime.mark(function _callee2(url, _ref) {
-    var global, returnDefault, modularVersion;
-    return regeneratorRuntime.wrap(function _callee2$(_context2) {
-      while (1) {
-        switch (_context2.prev = _context2.next) {
-          case 0:
-            global = _ref.global, returnDefault = _ref.returnDefault;
-            // Todo: Replace calls to this function with `import()` when supported
-            modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
-
-            if (!modularVersion) {
-              _context2.next = 4;
-              break;
-            }
-
-            return _context2.abrupt("return", importModule(url, undefined, {
-              returnDefault: returnDefault
-            }));
-
-          case 4:
-            _context2.next = 6;
-            return importScript(url);
-
-          case 6:
-            return _context2.abrupt("return", window[global]);
-
-          case 7:
-          case "end":
-            return _context2.stop();
-        }
-      }
-    }, _callee2, this);
-  }));
   return _importSetGlobal.apply(this, arguments);
 }
 
@@ -9389,6 +9456,7 @@ function importScript(url) {
   }
 
   return new Promise(function (resolve, reject) {
+    // eslint-disable-line promise/avoid-new
     var script = document.createElement('script');
 
     var destructor = function destructor() {
@@ -9415,6 +9483,16 @@ function importScript(url) {
     document.head.append(script);
   });
 }
+/**
+ *
+ * @param {string|string[]} url
+ * @param {PlainObject} [atts={}]
+ * @param {PlainObject} opts
+ * @param {boolean} [opts.returnDefault=false} = {}]
+ * @returns {Promise} Resolves to value of loading module or rejects with
+ *   `Error` upon a script loading error.
+ */
+
 function importModule(url) {
   var atts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
 
@@ -9429,6 +9507,7 @@ function importModule(url) {
   }
 
   return new Promise(function (resolve, reject) {
+    // eslint-disable-line promise/avoid-new
     var vector = '$importModule$' + Math.random().toString(32).slice(2);
     var script = document.createElement('script');
 
@@ -9466,6 +9545,202 @@ function importModule(url) {
   });
 }
 
+/**
+ * @module jQueryPluginDBox
+ */
+
+/**
+* @param {external:jQuery} $
+* @param {PlainObject} [strings]
+* @param {PlainObject} [strings.ok]
+* @param {PlainObject} [strings.cancel]
+* @returns {external:jQuery}
+*/
+function jQueryPluginDBox($) {
+  var strings = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+    ok: 'Ok',
+    cancel: 'Cancel'
+  };
+  // This sets up alternative dialog boxes. They mostly work the same way as
+  // their UI counterparts, expect instead of returning the result, a callback
+  // needs to be included that returns the result as its first parameter.
+  // In the future we may want to add additional types of dialog boxes, since
+  // they should be easy to handle this way.
+  $('#dialog_container').draggable({
+    cancel: '#dialog_content, #dialog_buttons *',
+    containment: 'window'
+  }).css('position', 'absolute');
+  var box = $('#dialog_box'),
+      btnHolder = $('#dialog_buttons'),
+      dialogContent = $('#dialog_content');
+  /**
+  * Resolves to `false` (if cancelled), for prompts and selects
+  * without checkboxes, it resolves to the value of the form control. For other
+  * types without checkboxes, it resolves to `true`. For checkboxes, it resolves
+  * to an object with the `response` key containing the same value as the previous
+  * mentioned (string or `true`) and a `checked` (boolean) property.
+  * @typedef {Promise} module:jQueryPluginDBox.PromiseResult
+  */
+
+  /**
+  * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption
+  * @property {string} text
+  * @property {string} value
+  */
+
+  /**
+  * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo
+  * @property {string} label Label for the checkbox
+  * @property {string} value Value of the checkbox
+  * @property {string} tooltip Tooltip on the checkbox label
+  * @property {boolean} checked Whether the checkbox is checked by default
+  */
+
+  /**
+   * Triggered upon a change of value for the select pull-down.
+   * @callback module:jQueryPluginDBox.SelectChangeListener
+   * @returns {undefined}
+   */
+
+  /**
+  * @param {"alert"|"prompt"|"select"|"process"} type
+  * @param {string} msg
+  * @param {string} [defaultVal]
+  * @param {module:jQueryPluginDBox.SelectOption[]} [opts]
+  * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]
+  * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+
+  function dbox(type, msg, defaultVal, opts, changeListener, checkbox) {
+    dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
+    btnHolder.empty();
+    var ok = $('<input type="button" value="' + strings.ok + '">').appendTo(btnHolder);
+    return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
+      if (type !== 'alert') {
+        $('<input type="button" value="' + strings.cancel + '">').appendTo(btnHolder).click(function () {
+          box.hide();
+          resolve(false);
+        });
+      }
+
+      var ctrl, chkbx;
+
+      if (type === 'prompt') {
+        ctrl = $('<input type="text">').prependTo(btnHolder);
+        ctrl.val(defaultVal || '');
+        ctrl.bind('keydown', 'return', function () {
+          ok.click();
+        });
+      } else if (type === 'select') {
+        var div = $('<div style="text-align:center;">');
+        ctrl = $('<select>').appendTo(div);
+
+        if (checkbox) {
+          var label = $('<label>').text(checkbox.label);
+          chkbx = $('<input type="checkbox">').appendTo(label);
+          chkbx.val(checkbox.value);
+
+          if (checkbox.tooltip) {
+            label.attr('title', checkbox.tooltip);
+          }
+
+          chkbx.prop('checked', Boolean(checkbox.checked));
+          div.append($('<div>').append(label));
+        }
+
+        $.each(opts || [], function (opt, val) {
+          if (_typeof(val) === 'object') {
+            ctrl.append($('<option>').val(val.value).html(val.text));
+          } else {
+            ctrl.append($('<option>').html(val));
+          }
+        });
+        dialogContent.append(div);
+
+        if (defaultVal) {
+          ctrl.val(defaultVal);
+        }
+
+        if (changeListener) {
+          ctrl.bind('change', 'return', changeListener);
+        }
+
+        ctrl.bind('keydown', 'return', function () {
+          ok.click();
+        });
+      } else if (type === 'process') {
+        ok.hide();
+      }
+
+      box.show();
+      ok.click(function () {
+        box.hide();
+        var response = type === 'prompt' || type === 'select' ? ctrl.val() : true;
+
+        if (chkbx) {
+          resolve({
+            response: response,
+            checked: chkbx.prop('checked')
+          });
+          return;
+        }
+
+        resolve(response);
+      }).focus();
+
+      if (type === 'prompt' || type === 'select') {
+        ctrl.focus();
+      }
+    });
+  }
+  /**
+  * @param {string} msg Message to alert
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+
+
+  $.alert = function (msg) {
+    return dbox('alert', msg);
+  };
+  /**
+  * @param {string} msg Message for which to ask confirmation
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+
+
+  $.confirm = function (msg) {
+    return dbox('confirm', msg);
+  };
+  /**
+  * @param {string} msg Message to indicate upon cancelable indicator
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+
+
+  $.process_cancel = function (msg) {
+    return dbox('process', msg);
+  };
+  /**
+  * @param {string} msg Message to accompany the prompt
+  * @param {string} [defaultText=''] The default text to show for the prompt
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+
+
+  $.prompt = function (msg) {
+    var defaultText = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
+    return dbox('prompt', msg, defaultText);
+  };
+
+  $.select = function (msg, opts, changeListener, txt, checkbox) {
+    return dbox('select', msg, txt, opts, changeListener, checkbox);
+  };
+
+  return $;
+}
+
 var $$4 = jQuery;
 /**
  * This class encapsulates the concept of a layer in the drawing. It can be constructed with
@@ -9594,7 +9869,7 @@ function () {
     value: function getOpacity() {
       var opacity = this.group_.getAttribute('opacity');
 
-      if (opacity === null || opacity === undefined) {
+      if (isNullish(opacity)) {
         return 1;
       }
 
@@ -9679,7 +9954,6 @@ function () {
     }
     /**
      * Remove this layer's group from the DOM. No more functions on group can be called after this.
-     * @param {SVGGElement} children - The children to append to this layer.
      * @returns {SVGGElement} The layer SVG group that was just removed.
      */
 
@@ -9716,7 +9990,7 @@ Layer.CLASS_REGEX = new RegExp('(\\s|^)' + Layer.CLASS_NAME + '(\\s|$)');
 function addLayerClass(elem) {
   var classes = elem.getAttribute('class');
 
-  if (classes === null || classes === undefined || !classes.length) {
+  if (isNullish(classes) || !classes.length) {
     elem.setAttribute('class', Layer.CLASS_NAME);
   } else if (!Layer.CLASS_REGEX.test(classes)) {
     elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);
@@ -9806,8 +10080,8 @@ function () {
       if (this.currentBatchCommand_) {
         var batchCommand = this.currentBatchCommand_;
         this.batchCommandStack_.pop();
-        var length = this.batchCommandStack_.length;
-        this.currentBatchCommand_ = length ? this.batchCommandStack_[length - 1] : null;
+        var len = this.batchCommandStack_.length;
+        this.currentBatchCommand_ = len ? this.batchCommandStack_[len - 1] : null;
         this.addCommand_(batchCommand);
       }
 
@@ -9890,7 +10164,7 @@ function () {
      * Private function to add a command to the history or current batch command.
      * @private
      * @param {Command} cmd
-     * @returns {module:history.HistoryRecordingService}
+     * @returns {module:history.HistoryRecordingService|undefined}
      */
 
   }, {
@@ -9905,6 +10179,8 @@ function () {
       } else {
         this.undoManager_.addCommandToHistory(cmd);
       }
+
+      return undefined;
     }
   }]);
 
@@ -10043,7 +10319,7 @@ function () {
     var n = this.svgElem_.getAttributeNS(NS.SE, 'nonce'); // If already set in the DOM, use the nonce throughout the document
     // else, if randomizeIds(true) has been called, create and set the nonce.
 
-    if (!!n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
+    if (n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
       this.nonce_ = n;
     } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {
       this.setNonce(Math.floor(Math.random() * 100001));
@@ -10178,7 +10454,7 @@ function () {
       } // extract the obj_num of this id
 
 
-      var num = parseInt(id.substr(front.length), 10); // if we didn't get a positive number or we already released this number
+      var num = parseInt(id.substr(front.length)); // if we didn't get a positive number or we already released this number
       // then return false.
 
       if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {
@@ -10680,10 +10956,10 @@ function () {
   }, {
     key: "copyElem",
     value: function copyElem$$1(el) {
-      var self = this;
+      var that = this;
 
       var getNextIdClosure = function getNextIdClosure() {
-        return self.getNextId();
+        return that.getNextId();
       };
 
       return copyElem(el, getNextIdClosure);
@@ -11080,26 +11356,6 @@ var setContext = function setContext(elem) {
   canvas_.call('contextset', canvas_.getCurrentGroup());
 };
 
-var draw = /*#__PURE__*/Object.freeze({
-  Drawing: Drawing,
-  randomizeIds: randomizeIds,
-  init: init$3,
-  identifyLayers: identifyLayers,
-  createLayer: createLayer,
-  cloneLayer: cloneLayer,
-  deleteCurrentLayer: deleteCurrentLayer,
-  setCurrentLayer: setCurrentLayer,
-  renameCurrentLayer: renameCurrentLayer,
-  setCurrentLayerPosition: setCurrentLayerPosition,
-  setLayerVisibility: setLayerVisibility,
-  moveSelectedToLayer: moveSelectedToLayer,
-  mergeLayer: mergeLayer,
-  mergeAllLayers: mergeAllLayers,
-  leaveContext: leaveContext,
-  setContext: setContext,
-  Layer: Layer
-});
-
 var REVERSE_NS = getReverseNS(); // this defines which elements and attributes that we support
 
 var svgWhiteList_ = {
@@ -11241,7 +11497,7 @@ var sanitizeSvg = function sanitizeSvg(node) {
       var attrNsURI = attr.namespaceURI; // Check that an attribute with the correct localName in the correct namespace is on
       // our whitelist or is a namespace declaration for one of our allowed namespaces
 
-      if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
+      if (!({}.hasOwnProperty.call(allowedAttrsNS, attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
         // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.
         // Bypassing the whitelist to allow se: prefixes.
         // Is there a more appropriate way to do this?
@@ -11258,9 +11514,11 @@ var sanitizeSvg = function sanitizeSvg(node) {
           case 'transform':
           case 'gradientTransform':
           case 'patternTransform':
-            var val = attr.value.replace(/(\d)-/g, '$1 -');
-            node.setAttribute(attrName, val);
-            break;
+            {
+              var val = attr.value.replace(/(\d)-/g, '$1 -');
+              node.setAttribute(attrName, val);
+              break;
+            }
         }
       } // For the style attribute, rewrite it in terms of XML presentational attributes
 
@@ -11356,7 +11614,6 @@ var sanitizeSvg = function sanitizeSvg(node) {
   }
 };
 
-/* globals jQuery */
 var $$6 = jQuery; // this is how we map paths to our preferred relative segment types
 
 var pathMap$1 = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a', 'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];
@@ -11408,9 +11665,13 @@ var remapElement = function remapElement(selected, changes, m) {
       doSnapping = editorContext_$2.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',
       finishUp = function finishUp() {
     if (doSnapping) {
-      for (var o in changes) {
-        changes[o] = snapToGrid(changes[o]);
-      }
+      Object.entries(changes).forEach(function (_ref) {
+        var _ref2 = _slicedToArray(_ref, 2),
+            o = _ref2[0],
+            value = _ref2[1];
+
+        changes[o] = snapToGrid(value);
+      });
     }
 
     assignAttributes(selected, changes, 1000, true);
@@ -11724,7 +11985,7 @@ var remapElement = function remapElement(selected, changes, m) {
 
             case 10:
               // absolute elliptical arc (A)
-              dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + +_seg2.largeArcFlag + ' ' + +_seg2.sweepFlag + ' ' + _seg2.x + ',' + _seg2.y + ' ';
+              dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + Number(_seg2.largeArcFlag) + ' ' + Number(_seg2.sweepFlag) + ' ' + _seg2.x + ',' + _seg2.y + ' ';
               break;
 
             case 17: // relative smooth cubic (s)
@@ -11743,7 +12004,7 @@ var remapElement = function remapElement(selected, changes, m) {
 };
 
 /* globals jQuery */
-var $$7 = jqPluginSVG(jQuery);
+var $$7 = jQueryPluginSVG(jQuery);
 var context_;
 /**
 * @interface module:recalculate.EditorContext
@@ -11800,7 +12061,7 @@ var updateClipPath = function updateClipPath(attr, tx, ty) {
 */
 
 var recalculateDimensions = function recalculateDimensions(selected) {
-  if (selected == null) {
+  if (isNullish(selected)) {
     return null;
   } // Firefox Issue - 1081
 
@@ -11986,7 +12247,7 @@ var recalculateDimensions = function recalculateDimensions(selected) {
   // make a copy of initial values and include the transform
 
 
-  if (initial == null) {
+  if (isNullish(initial)) {
     initial = $$7.extend(true, {}, changes);
     $$7.each(initial, function (attr, val) {
       initial[attr] = convertToNum(attr, val);
@@ -12592,7 +12853,8 @@ var recalculateDimensions = function recalculateDimensions(selected) {
       // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]
 
     } else if (_operation === 3 && _angle) {
-      var _m6 = transformListToTransform(tlist).matrix;
+      var _transformListToTrans = transformListToTransform(tlist),
+          matrix = _transformListToTrans.matrix;
 
       var _roldt = svgroot.createSVGTransform();
 
@@ -12606,9 +12868,9 @@ var recalculateDimensions = function recalculateDimensions(selected) {
 
       var _rnewInv = _rnew.matrix.inverse();
 
-      var _mInv2 = _m6.inverse();
+      var _mInv2 = matrix.inverse();
 
-      var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, _m6);
+      var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, matrix);
 
       remapElement(selected, changes, _extrat);
 
@@ -12709,39 +12971,6 @@ function () {
       this.selectorGroup.setAttribute('display', 'inline');
     }
     /**
-    * Updates cursors for corner grips on rotation so arrows point the right way.
-    * @param {Float} angle - Current rotation angle in degrees
-    * @returns {undefined}
-    */
-
-  }, {
-    key: "updateGripCursors",
-    value: function updateGripCursors(angle) {
-      var dir;
-      var dirArr = [];
-      var steps = Math.round(angle / 45);
-
-      if (steps < 0) {
-        steps += 8;
-      }
-
-      for (dir in selectorManager_.selectorGrips) {
-        dirArr.push(dir);
-      }
-
-      while (steps > 0) {
-        dirArr.push(dirArr.shift());
-        steps--;
-      }
-
-      var i = 0;
-
-      for (dir in selectorManager_.selectorGrips) {
-        selectorManager_.selectorGrips[dir].setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
-        i++;
-      }
-    }
-    /**
     * Show the resize grips of this selector.
     * @param {boolean} show - Indicates whether grips should be shown or not
     * @returns {undefined}
@@ -12757,7 +12986,7 @@ function () {
 
       if (elem && show) {
         this.selectorGroup.append(selectorManager_.selectorGripsGroup);
-        this.updateGripCursors(getRotationAngle(elem));
+        Selector.updateGripCursors(getRotationAngle(elem));
       }
     }
     /**
@@ -12874,13 +13103,14 @@ function () {
         e: [nbax + nbaw, nbay + nbah / 2],
         s: [nbax + nbaw / 2, nbay + nbah]
       };
+      Object.entries(this.gripCoords).forEach(function (_ref) {
+        var _ref2 = _slicedToArray(_ref, 2),
+            dir = _ref2[0],
+            coords = _ref2[1];
 
-      for (var dir in this.gripCoords) {
-        var coords = this.gripCoords[dir];
         selectedGrips[dir].setAttribute('cx', coords[0]);
         selectedGrips[dir].setAttribute('cy', coords[1]);
-      } // we want to go 20 pixels in the negative transformed y direction, ignoring scale
-
+      }); // we want to go 20 pixels in the negative transformed y direction, ignoring scale
 
       mgr.rotateGripConnector.setAttribute('x1', nbax + nbaw / 2);
       mgr.rotateGripConnector.setAttribute('y1', nbay);
@@ -12894,9 +13124,33 @@ function () {
   return Selector;
 }();
 /**
+* Updates cursors for corner grips on rotation so arrows point the right way.
+* @param {Float} angle - Current rotation angle in degrees
+* @returns {undefined}
+*/
+
+Selector.updateGripCursors = function (angle) {
+  var dirArr = Object.keys(selectorManager_.selectorGrips);
+  var steps = Math.round(angle / 45);
+
+  if (steps < 0) {
+    steps += 8;
+  }
+
+  while (steps > 0) {
+    dirArr.push(dirArr.shift());
+    steps--;
+  }
+
+  Object.values(selectorManager_.selectorGrips).forEach(function (gripElement, i) {
+    gripElement.setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
+  });
+};
+/**
 * Manage all selector objects (selection boxes).
 */
 
+
 var SelectorManager =
 /*#__PURE__*/
 function () {
@@ -12936,6 +13190,8 @@ function () {
   _createClass(SelectorManager, [{
     key: "initGroup",
     value: function initGroup() {
+      var _this = this;
+
       // remove old selector parent group if it existed
       if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {
         this.selectorParentGroup.remove();
@@ -12960,7 +13216,7 @@ function () {
       this.selectors = [];
       this.rubberBandBox = null; // add the corner grips
 
-      for (var dir in this.selectorGrips) {
+      Object.keys(this.selectorGrips).forEach(function (dir) {
         var grip = svgFactory_.createSVGElement({
           element: 'circle',
           attr: {
@@ -12978,9 +13234,8 @@ function () {
         });
         $$8.data(grip, 'dir', dir);
         $$8.data(grip, 'type', 'resize');
-        this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);
-      } // add rotator elems
-
+        _this.selectorGrips[dir] = _this.selectorGripsGroup.appendChild(grip);
+      }); // add rotator elems
 
       this.rotateGripConnector = this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({
         element: 'line',
@@ -13053,7 +13308,7 @@ function () {
   }, {
     key: "requestSelector",
     value: function requestSelector(elem, bbox) {
-      if (elem == null) {
+      if (isNullish(elem)) {
         return null;
       }
 
@@ -13089,7 +13344,7 @@ function () {
   }, {
     key: "releaseSelector",
     value: function releaseSelector(elem) {
-      if (elem == null) {
+      if (isNullish(elem)) {
         return;
       }
 
@@ -13098,7 +13353,7 @@ function () {
 
       if (!sel.locked) {
         // TODO(codedread): Ensure this exists in this module.
-        console.log('WARNING! selector was released but was already unlocked');
+        console.log('WARNING! selector was released but was already unlocked'); // eslint-disable-line no-console
       }
 
       for (var i = 0; i < N; ++i) {
@@ -13207,7 +13462,7 @@ var getSelectorManager = function getSelectorManager() {
   return selectorManager_;
 };
 
-var $$9 = jqPluginSVG(jQuery);
+var $$9 = jQueryPluginSVG(jQuery);
 var MoveElementCommand$1 = MoveElementCommand,
     InsertElementCommand$1 = InsertElementCommand,
     RemoveElementCommand$1 = RemoveElementCommand,
@@ -13219,9 +13474,13 @@ var MoveElementCommand$1 = MoveElementCommand,
 if (!window.console) {
   window.console = {};
 
-  window.console.log = function (str) {};
+  window.console.log = function (str) {
+    /* */
+  };
 
-  window.console.dir = function (str) {};
+  window.console.dir = function (str) {
+    /* */
+  };
 }
 
 if (window.opera) {
@@ -13229,7 +13488,9 @@ if (window.opera) {
     window.opera.postError(str);
   };
 
-  window.console.dir = function (str) {};
+  window.console.dir = function (str) {
+    /* */
+  };
 }
 /**
 * The main SvgCanvas class that manages all SVG-related functions.
@@ -13283,7 +13544,8 @@ function SvgCanvas(container, config) {
 
 
   var dimensions = curConfig.dimensions;
-  var canvas = this; // "document" element associated with the container (same as window.document using default svg-editor.js)
+  var canvas = this; // eslint-disable-line consistent-this
+  // "document" element associated with the container (same as window.document using default svg-editor.js)
   // NOTE: This is not actually a SVG document, but an HTML document.
 
   var svgdoc = container.ownerDocument; // This is a container for the document being edited, not the document itself.
@@ -13659,10 +13921,8 @@ function SvgCanvas(container, config) {
             if (isApply) {
               restoreRefElems(cmd.elem);
             }
-          } else {
-            if (!isApply) {
-              restoreRefElems(cmd.elem);
-            }
+          } else if (!isApply) {
+            restoreRefElems(cmd.elem);
           }
 
           if (cmd.elem.tagName === 'use') {
@@ -13724,7 +13984,7 @@ function SvgCanvas(container, config) {
 
 
   var round = this.round = function (val) {
-    return parseInt(val * currentZoom, 10) / currentZoom;
+    return parseInt(val * currentZoom) / currentZoom;
   };
 
   init$6(curConfig,
@@ -13774,7 +14034,7 @@ function SvgCanvas(container, config) {
   * @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}
   * @param {"selected"|"changed"|"contextset"|"pointsAdded"|"extension_added"|"extensions_added"|"message"|"transition"|"zoomed"|"updateCanvas"|"zoomDone"|"saved"|"exported"|"exportedPDF"|"setnonce"|"unsetnonce"|"cleared"} ev - String with the event name
   * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.
-  * @returns {undefined}
+  * @returns {module:svgcanvas.EventHandlerReturn|undefined}
   */
 
 
@@ -13782,6 +14042,8 @@ function SvgCanvas(container, config) {
     if (events[ev]) {
       return events[ev](window, arg);
     }
+
+    return undefined;
   };
   /**
   * Clears the selection. The 'selected' handler is then optionally called.
@@ -13794,7 +14056,7 @@ function SvgCanvas(container, config) {
 
   var clearSelection = this.clearSelection = function (noCall) {
     selectedElements.forEach(function (elem) {
-      if (elem == null) {
+      if (isNullish(elem)) {
         return;
       }
 
@@ -13823,7 +14085,7 @@ function SvgCanvas(container, config) {
     var j = 0;
 
     while (j < selectedElements.length) {
-      if (selectedElements[j] == null) {
+      if (isNullish(selectedElements[j])) {
         break;
       }
 
@@ -13877,15 +14139,17 @@ function SvgCanvas(container, config) {
 
     selectedElements.sort(function (a, b) {
       if (a && b && a.compareDocumentPosition) {
-        return 3 - (b.compareDocumentPosition(a) & 6);
+        return 3 - (b.compareDocumentPosition(a) & 6); // eslint-disable-line no-bitwise
       }
 
-      if (a == null) {
+      if (isNullish(a)) {
         return 1;
       }
+
+      return 0;
     }); // Make sure first elements are not null
 
-    while (selectedElements[0] == null) {
+    while (isNullish(selectedElements[0])) {
       selectedElements.shift(0);
     }
   };
@@ -13904,7 +14168,7 @@ function SvgCanvas(container, config) {
 
 
   var getMouseTarget = this.getMouseTarget = function (evt) {
-    if (evt == null) {
+    if (isNullish(evt)) {
       return null;
     }
 
@@ -14009,8 +14273,9 @@ function SvgCanvas(container, config) {
     },
 
     /**
-     * @param {boolean} closedSubpath
-     * @param {SVGCircleElement[]} grips
+     * @param {PlainObject} ptsInfo
+     * @param {boolean} ptsInfo.closedSubpath
+     * @param {SVGCircleElement[]} ptsInfo.grips
      * @fires module:svgcanvas.SvgCanvas#event:pointsAdded
      * @fires module:svgcanvas.SvgCanvas#event:selected
      * @returns {undefined}
@@ -14029,8 +14294,9 @@ function SvgCanvas(container, config) {
     },
 
     /**
-     * @param {ChangeElementCommand} cmd
-     * @param {SVGPathElement} elem
+     * @param {PlainObject} changes
+     * @param {ChangeElementCommand} changes.cmd
+     * @param {SVGPathElement} changes.elem
      * @fires module:svgcanvas.SvgCanvas#event:changed
      * @returns {undefined}
      */
@@ -14077,10 +14343,7 @@ function SvgCanvas(container, config) {
   var restoreRefElems = function restoreRefElems(elem) {
     // Look for missing reference elements, restore any found
     var attrs = $$9(elem).attr(refAttrs);
-
-    for (var o in attrs) {
-      var val = attrs[o];
-
+    Object.values(attrs).forEach(function (val) {
       if (val && val.startsWith('url(')) {
         var id = getUrlFromAttr(val).substr(1);
         var ref = getElem(id);
@@ -14090,8 +14353,7 @@ function SvgCanvas(container, config) {
           delete removedElements[id];
         }
       }
-    }
-
+    });
     var childs = elem.getElementsByTagName('*');
 
     if (childs.length) {
@@ -14156,6 +14418,12 @@ function SvgCanvas(container, config) {
   curBBoxes = [],
       // Canvas point for the most recent right click
   lastClickPoint = null;
+
+  this.runExtension = function (name, action, vars) {
+    return this.runExtensions(action, vars, false, function (n) {
+      return n === name;
+    });
+  };
   /**
   * @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus
   * @tutorial ExtensionDocs
@@ -14164,6 +14432,13 @@ function SvgCanvas(container, config) {
   /**
   * @callback module:svgcanvas.ExtensionVarBuilder
   * @param {string} name The name of the extension
+  * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}
+  */
+
+  /**
+  * @callback module:svgcanvas.ExtensionNameFilter
+  * @param {string} name
+  * @returns {boolean}
   */
 
   /**
@@ -14173,12 +14448,18 @@ function SvgCanvas(container, config) {
   * @param {"mouseDown"|"mouseMove"|"mouseUp"|"zoomChanged"|"IDsUpdated"|"canvasUpdated"|"toolButtonStateUpdate"|"selectedChanged"|"elementTransition"|"elementChanged"|"langReady"|"langChanged"|"addLangData"|"onNewDocument"|"workareaResized"} action
   * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]
   * @param {boolean} [returnArray]
+  * @param {module:svgcanvas.ExtensionNameFilter} nameFilter
   * @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.
   */
 
-  var runExtensions = this.runExtensions = function (action, vars, returnArray) {
+
+  var runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {
     var result = returnArray ? [] : false;
     $$9.each(extensions, function (name, ext) {
+      if (nameFilter && !nameFilter(name)) {
+        return;
+      }
+
       if (ext && action in ext) {
         if (typeof vars === 'function') {
           vars = vars(name); // ext, action
@@ -14328,7 +14609,8 @@ function SvgCanvas(container, config) {
   * @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data
   * @param {module:SVGEditor~ImportLocale} importLocale
   * @fires module:svgcanvas.SvgCanvas#event:extension_added
-  * @throws {TypeError} If `extInitFunc` is not a function
+  * @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`
+  *   if extension of supplied name already exists
   * @returns {Promise} Resolves to `undefined`
   */
 
@@ -14352,11 +14634,14 @@ function SvgCanvas(container, config) {
               throw new TypeError('Function argument expected for `svgcanvas.addExtension`');
 
             case 2:
-              if (name in extensions) {
-                _context.next = 12;
+              if (!(name in extensions)) {
+                _context.next = 4;
                 break;
               }
 
+              throw new Error('Cannot add extension "' + name + '", an extension by that name already exists.');
+
+            case 4:
               // Provide private vars/funcs here. Is there a better way to do this?
 
               /**
@@ -14373,16 +14658,17 @@ function SvgCanvas(container, config) {
                * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties
                */
               argObj = $$9.extend(canvas.getPrivateMethods(), {
+                $: $$9,
                 importLocale: importLocale,
                 svgroot: svgroot,
                 svgcontent: svgcontent,
                 nonce: getCurrentDrawing().getNonce(),
                 selectorManager: selectorManager
               });
-              _context.next = 6;
+              _context.next = 7;
               return extInitFunc(argObj);
 
-            case 6:
+            case 7:
               extObj = _context.sent;
 
               if (extObj) {
@@ -14392,10 +14678,7 @@ function SvgCanvas(container, config) {
               extensions[name] = extObj;
               return _context.abrupt("return", call('extension_added', extObj));
 
-            case 12:
-              console.log('Cannot add extension "' + name + '", an extension by that name already exists.');
-
-            case 13:
+            case 11:
             case "end":
               return _context.stop();
           }
@@ -14422,7 +14705,7 @@ function SvgCanvas(container, config) {
 
 
   var getIntersectionList = this.getIntersectionList = function (rect) {
-    if (rubberBox == null) {
+    if (isNullish(rubberBox)) {
       return null;
     }
 
@@ -14432,11 +14715,9 @@ function SvgCanvas(container, config) {
     if (!rect) {
       rubberBBox = rubberBox.getBBox();
       var bb = svgcontent.createSVGRect();
-
-      for (var o in rubberBBox) {
+      ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach(function (o) {
         bb[o] = rubberBBox[o] / currentZoom;
-      }
-
+      });
       rubberBBox = bb;
     } else {
       rubberBBox = svgcontent.createSVGRect();
@@ -14451,13 +14732,13 @@ function SvgCanvas(container, config) {
     if (!isIE) {
       if (typeof svgroot.getIntersectionList === 'function') {
         // Offset the bbox of the rubber box by the offset of the svgcontent element.
-        rubberBBox.x += parseInt(svgcontent.getAttribute('x'), 10);
-        rubberBBox.y += parseInt(svgcontent.getAttribute('y'), 10);
+        rubberBBox.x += parseInt(svgcontent.getAttribute('x'));
+        rubberBBox.y += parseInt(svgcontent.getAttribute('y'));
         resultList = svgroot.getIntersectionList(rubberBBox, parent);
       }
     }
 
-    if (resultList == null || typeof resultList.item !== 'function') {
+    if (isNullish(resultList) || typeof resultList.item !== 'function') {
       resultList = [];
 
       if (!curBBoxes.length) {
@@ -14658,11 +14939,18 @@ function SvgCanvas(container, config) {
    * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}
    */
 
+  /**
+   * The promise return, if present, resolves to `undefined`
+   *  (`extension_added`, `exported`, `saved`)
+   * @typedef {Promise|undefined} module:svgcanvas.EventHandlerReturn
+  */
+
   /**
   * @callback module:svgcanvas.EventHandler
   * @param {external:Window} win
   * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg
   * @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent
+  * @returns {module:svgcanvas.EventHandlerReturn}
   */
 
   /**
@@ -14786,7 +15074,7 @@ function SvgCanvas(container, config) {
 
     var selector = selectorManager.requestSelector(selectedElements[0]);
     selector.resize();
-    selector.updateGripCursors(val);
+    Selector.updateGripCursors(val);
   };
   /**
   * Runs `recalculateDimensions` on the selected elements,
@@ -14826,7 +15114,7 @@ function SvgCanvas(container, config) {
 
 
   var logMatrix = function logMatrix(m) {
-    console.log([m.a, m.b, m.c, m.d, m.e, m.f]);
+    console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console
   }; // Root Current Transformation Matrix in user units
 
 
@@ -14861,7 +15149,7 @@ function SvgCanvas(container, config) {
 
 
   this.removeFromSelection = function (elemsToRemove) {
-    if (selectedElements[0] == null) {
+    if (isNullish(selectedElements[0])) {
       return;
     }
 
@@ -15033,7 +15321,7 @@ function SvgCanvas(container, config) {
       // set the mouseTarget to that and update the mode to rotate/resize
 
 
-      if (mouseTarget === selectorManager.selectorParentGroup && selectedElements[0] != null) {
+      if (mouseTarget === selectorManager.selectorParentGroup && !isNullish(selectedElements[0])) {
         var grip = evt.target;
         var griptype = elData(grip, 'type'); // rotating
 
@@ -15048,7 +15336,6 @@ function SvgCanvas(container, config) {
       }
 
       startTransform = mouseTarget.getAttribute('transform');
-      var i, strokeW;
       var tlist = getTransformList(mouseTarget);
 
       switch (currentMode) {
@@ -15079,8 +15366,8 @@ function SvgCanvas(container, config) {
             if (!rightClick) {
               // insert a dummy transform so if the element(s) are moved it will have
               // a transform to use for its translate
-              for (i = 0; i < selectedElements.length; ++i) {
-                if (selectedElements[i] == null) {
+              for (var i = 0; i < selectedElements.length; ++i) {
+                if (isNullish(selectedElements[i])) {
                   continue;
                 }
 
@@ -15097,7 +15384,7 @@ function SvgCanvas(container, config) {
             clearSelection();
             currentMode = 'multiselect';
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = selectorManager.getRubberBandBox();
             }
 
@@ -15121,7 +15408,7 @@ function SvgCanvas(container, config) {
         case 'zoom':
           started = true;
 
-          if (rubberBox == null) {
+          if (isNullish(rubberBox)) {
             rubberBox = selectorManager.getRubberBandBox();
           }
 
@@ -15135,75 +15422,77 @@ function SvgCanvas(container, config) {
           break;
 
         case 'resize':
-          started = true;
-          startX = x;
-          startY = y; // Getting the BBox from the selection box, since we know we
-          // want to orient around it
+          {
+            started = true;
+            startX = x;
+            startY = y; // Getting the BBox from the selection box, since we know we
+            // want to orient around it
 
-          initBbox = getBBox($$9('#selectedBox0')[0]);
-          var bb = {};
-          $$9.each(initBbox, function (key, val) {
-            bb[key] = val / currentZoom;
-          });
-          initBbox = bb; // append three dummy transforms to the tlist so that
-          // we can translate,scale,translate in mousemove
+            initBbox = getBBox($$9('#selectedBox0')[0]);
+            var bb = {};
+            $$9.each(initBbox, function (key, val) {
+              bb[key] = val / currentZoom;
+            });
+            initBbox = bb; // append three dummy transforms to the tlist so that
+            // we can translate,scale,translate in mousemove
 
-          var pos = getRotationAngle(mouseTarget) ? 1 : 0;
+            var pos = getRotationAngle(mouseTarget) ? 1 : 0;
 
-          if (hasMatrixTransform(tlist)) {
-            tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-            tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-            tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-          } else {
-            tlist.appendItem(svgroot.createSVGTransform());
-            tlist.appendItem(svgroot.createSVGTransform());
-            tlist.appendItem(svgroot.createSVGTransform());
+            if (hasMatrixTransform(tlist)) {
+              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+            } else {
+              tlist.appendItem(svgroot.createSVGTransform());
+              tlist.appendItem(svgroot.createSVGTransform());
+              tlist.appendItem(svgroot.createSVGTransform());
 
-            if (supportsNonScalingStroke()) {
-              // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
-              // https://code.google.com/p/svg-edit/issues/detail?id=904
-              // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
-              // TODO: Remove this workaround once vendor fixes the issue
-              var iswebkit = isWebkit();
-              var delayedStroke;
-
-              if (iswebkit) {
-                delayedStroke = function delayedStroke(ele) {
-                  var _stroke = ele.getAttribute('stroke');
-
-                  ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
-
-                  if (_stroke !== null) setTimeout(function () {
-                    ele.setAttribute('stroke', _stroke);
-                  }, 0);
-                };
-              }
-
-              mouseTarget.style.vectorEffect = 'non-scaling-stroke';
-
-              if (iswebkit) {
-                delayedStroke(mouseTarget);
-              }
-
-              var all = mouseTarget.getElementsByTagName('*'),
-                  len = all.length;
-
-              for (i = 0; i < len; i++) {
-                if (!all[i].style) {
-                  // mathML
-                  continue;
-                }
-
-                all[i].style.vectorEffect = 'non-scaling-stroke';
+              if (supportsNonScalingStroke()) {
+                // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
+                // https://code.google.com/p/svg-edit/issues/detail?id=904
+                // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
+                // TODO: Remove this workaround once vendor fixes the issue
+                var iswebkit = isWebkit();
+                var delayedStroke;
 
                 if (iswebkit) {
-                  delayedStroke(all[i]);
+                  delayedStroke = function delayedStroke(ele) {
+                    var _stroke = ele.getAttribute('stroke');
+
+                    ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
+
+                    if (_stroke !== null) setTimeout(function () {
+                      ele.setAttribute('stroke', _stroke);
+                    }, 0);
+                  };
+                }
+
+                mouseTarget.style.vectorEffect = 'non-scaling-stroke';
+
+                if (iswebkit) {
+                  delayedStroke(mouseTarget);
+                }
+
+                var all = mouseTarget.getElementsByTagName('*'),
+                    len = all.length;
+
+                for (var _i2 = 0; _i2 < len; _i2++) {
+                  if (!all[_i2].style) {
+                    // mathML
+                    continue;
+                  }
+
+                  all[_i2].style.vectorEffect = 'non-scaling-stroke';
+
+                  if (iswebkit) {
+                    delayedStroke(all[_i2]);
+                  }
                 }
               }
             }
-          }
 
-          break;
+            break;
+          }
 
         case 'fhellipse':
         case 'fhrect':
@@ -15233,22 +15522,24 @@ function SvgCanvas(container, config) {
           break;
 
         case 'image':
-          started = true;
-          var newImage = addSVGElementFromJson({
-            element: 'image',
-            attr: {
-              x: x,
-              y: y,
-              width: 0,
-              height: 0,
-              id: getNextId(),
-              opacity: curShape.opacity / 2,
-              style: 'pointer-events:inherit'
-            }
-          });
-          setHref(newImage, lastGoodImgUrl);
-          preventClickDefault(newImage);
-          break;
+          {
+            started = true;
+            var newImage = addSVGElementFromJson({
+              element: 'image',
+              attr: {
+                x: x,
+                y: y,
+                width: 0,
+                height: 0,
+                id: getNextId(),
+                opacity: curShape.opacity / 2,
+                style: 'pointer-events:inherit'
+              }
+            });
+            setHref(newImage, lastGoodImgUrl);
+            preventClickDefault(newImage);
+            break;
+          }
 
         case 'square': // FIXME: once we create the rect, we lose information that this was a square
         // (for resizing purposes this could be important)
@@ -15273,29 +15564,31 @@ function SvgCanvas(container, config) {
           break;
 
         case 'line':
-          started = true;
-          strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
-          addSVGElementFromJson({
-            element: 'line',
-            curStyles: true,
-            attr: {
-              x1: x,
-              y1: y,
-              x2: x,
-              y2: y,
-              id: getNextId(),
-              stroke: curShape.stroke,
-              'stroke-width': strokeW,
-              'stroke-dasharray': curShape.stroke_dasharray,
-              'stroke-linejoin': curShape.stroke_linejoin,
-              'stroke-linecap': curShape.stroke_linecap,
-              'stroke-opacity': curShape.stroke_opacity,
-              fill: 'none',
-              opacity: curShape.opacity / 2,
-              style: 'pointer-events:none'
-            }
-          });
-          break;
+          {
+            started = true;
+            var strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
+            addSVGElementFromJson({
+              element: 'line',
+              curStyles: true,
+              attr: {
+                x1: x,
+                y1: y,
+                x2: x,
+                y2: y,
+                id: getNextId(),
+                stroke: curShape.stroke,
+                'stroke-width': strokeW,
+                'stroke-dasharray': curShape.stroke_dasharray,
+                'stroke-linejoin': curShape.stroke_linejoin,
+                'stroke-linecap': curShape.stroke_linecap,
+                'stroke-opacity': curShape.stroke_opacity,
+                fill: 'none',
+                opacity: curShape.opacity / 2,
+                style: 'pointer-events:none'
+              }
+            });
+            break;
+          }
 
         case 'circle':
           started = true;
@@ -15479,7 +15772,7 @@ function SvgCanvas(container, config) {
                 for (i = 0; i < len; ++i) {
                   selected = selectedElements[i];
 
-                  if (selected == null) {
+                  if (isNullish(selected)) {
                     break;
                   } // if (i === 0) {
                   //   const box = utilsGetBBox(selected);
@@ -15831,9 +16124,7 @@ function SvgCanvas(container, config) {
             break; // update path stretch line coordinates
           }
 
-        case 'path':
-
-        // fall through
+        case 'path': // fall through
 
         case 'pathedit':
           {
@@ -15990,7 +16281,7 @@ function SvgCanvas(container, config) {
         // intentionally fall-through to select here
         case 'resize':
         case 'multiselect':
-          if (rubberBox != null) {
+          if (!isNullish(rubberBox)) {
             rubberBox.setAttribute('display', 'none');
             curBBoxes = [];
           }
@@ -15999,9 +16290,9 @@ function SvgCanvas(container, config) {
         // Fallthrough
 
         case 'select':
-          if (selectedElements[0] != null) {
+          if (!isNullish(selectedElements[0])) {
             // if we only have one selected element
-            if (selectedElements[1] == null) {
+            if (isNullish(selectedElements[1])) {
               // set our current stroke/fill properties to the element's
               var selected = selectedElements[0];
 
@@ -16039,7 +16330,7 @@ function SvgCanvas(container, config) {
               var len = selectedElements.length;
 
               for (var i = 0; i < len; ++i) {
-                if (selectedElements[i] == null) {
+                if (isNullish(selectedElements[i])) {
                   break;
                 }
 
@@ -16052,7 +16343,7 @@ function SvgCanvas(container, config) {
             } else {
               t = evt.target;
 
-              if (selectedElements[0].nodeName === 'path' && selectedElements[1] == null) {
+              if (selectedElements[0].nodeName === 'path' && isNullish(selectedElements[1])) {
                 pathActions$$1.select(selectedElements[0]); // if it was a path
                 // else, if it was selected and this is a shift-click, remove it from selection
               } else if (evt.shiftKey) {
@@ -16069,8 +16360,8 @@ function SvgCanvas(container, config) {
 
               if (elem) {
                 elem.removeAttribute('style');
-                walkTree(elem, function (elem) {
-                  elem.removeAttribute('style');
+                walkTree(elem, function (el) {
+                  el.removeAttribute('style');
                 });
               }
             }
@@ -16079,57 +16370,61 @@ function SvgCanvas(container, config) {
           return;
 
         case 'zoom':
-          if (rubberBox != null) {
-            rubberBox.setAttribute('display', 'none');
-          }
+          {
+            if (!isNullish(rubberBox)) {
+              rubberBox.setAttribute('display', 'none');
+            }
 
-          var factor = evt.shiftKey ? 0.5 : 2;
-          call('zoomed', {
-            x: Math.min(rStartX, realX),
-            y: Math.min(rStartY, realY),
-            width: Math.abs(realX - rStartX),
-            height: Math.abs(realY - rStartY),
-            factor: factor
-          });
-          return;
+            var factor = evt.shiftKey ? 0.5 : 2;
+            call('zoomed', {
+              x: Math.min(rStartX, realX),
+              y: Math.min(rStartY, realY),
+              width: Math.abs(realX - rStartX),
+              height: Math.abs(realY - rStartY),
+              factor: factor
+            });
+            return;
+          }
 
         case 'fhpath':
-          // Check that the path contains at least 2 points; a degenerate one-point path
-          // causes problems.
-          // Webkit ignores how we set the points attribute with commas and uses space
-          // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
-          sumDistance = 0;
-          controllPoint2 = {
-            x: 0,
-            y: 0
-          };
-          controllPoint1 = {
-            x: 0,
-            y: 0
-          };
-          start = {
-            x: 0,
-            y: 0
-          };
-          end = {
-            x: 0,
-            y: 0
-          };
-          var coords = element.getAttribute('points');
-          var commaIndex = coords.indexOf(',');
+          {
+            // Check that the path contains at least 2 points; a degenerate one-point path
+            // causes problems.
+            // Webkit ignores how we set the points attribute with commas and uses space
+            // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
+            sumDistance = 0;
+            controllPoint2 = {
+              x: 0,
+              y: 0
+            };
+            controllPoint1 = {
+              x: 0,
+              y: 0
+            };
+            start = {
+              x: 0,
+              y: 0
+            };
+            end = {
+              x: 0,
+              y: 0
+            };
+            var coords = element.getAttribute('points');
+            var commaIndex = coords.indexOf(',');
 
-          if (commaIndex >= 0) {
-            keep = coords.indexOf(',', commaIndex + 1) >= 0;
-          } else {
-            keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+            if (commaIndex >= 0) {
+              keep = coords.indexOf(',', commaIndex + 1) >= 0;
+            } else {
+              keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+            }
+
+            if (keep) {
+              element = pathActions$$1.smoothPolylineIntoPath(element);
+            }
+
+            break;
           }
 
-          if (keep) {
-            element = pathActions$$1.smoothPolylineIntoPath(element);
-          }
-
-          break;
-
         case 'line':
           attrs = $$9(element).attr(['x1', 'x2', 'y1', 'y2']);
           keep = attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2;
@@ -16198,14 +16493,16 @@ function SvgCanvas(container, config) {
           break;
 
         case 'path':
-          // set element to null here so that it is not removed nor finalized
-          element = null; // continue to be set to true so that mouseMove happens
+          {
+            // set element to null here so that it is not removed nor finalized
+            element = null; // continue to be set to true so that mouseMove happens
 
-          started = true;
-          var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
-          element = res.element;
-          keep = res.keep;
-          break;
+            started = true;
+            var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
+            element = res.element;
+            keep = res.keep;
+            break;
+          }
 
         case 'pathedit':
           keep = true;
@@ -16220,19 +16517,21 @@ function SvgCanvas(container, config) {
           break;
 
         case 'rotate':
-          keep = true;
-          element = null;
-          currentMode = 'select';
-          var batchCmd = canvas.undoMgr.finishUndoableChange();
+          {
+            keep = true;
+            element = null;
+            currentMode = 'select';
+            var batchCmd = canvas.undoMgr.finishUndoableChange();
 
-          if (!batchCmd.isEmpty()) {
-            addCommandToHistory(batchCmd);
-          } // perform recalculation to weed out any stray identity transforms that might get stuck
+            if (!batchCmd.isEmpty()) {
+              addCommandToHistory(batchCmd);
+            } // perform recalculation to weed out any stray identity transforms that might get stuck
 
 
-          recalculateAllSelectedDimensions();
-          call('changed', selectedElements);
-          break;
+            recalculateAllSelectedDimensions();
+            call('changed', selectedElements);
+            break;
+          }
 
         default:
           // This could occur in an extension
@@ -16263,7 +16562,7 @@ function SvgCanvas(container, config) {
         }
       });
 
-      if (!keep && element != null) {
+      if (!keep && !isNullish(element)) {
         getCurrentDrawing().releaseId(getId());
         element.remove();
         element = null;
@@ -16283,7 +16582,7 @@ function SvgCanvas(container, config) {
           canvas.setMode('select');
           selectOnly([t], true);
         }
-      } else if (element != null) {
+      } else if (!isNullish(element)) {
         /**
         * @name module:svgcanvas.SvgCanvas#addedNew
         * @type {boolean}
@@ -16415,8 +16714,8 @@ function SvgCanvas(container, config) {
       var workareaViewH = editorH * rootSctm.d; // content offset from canvas in screen pixels
 
       var wOffset = workarea.offset();
-      var wOffsetLeft = wOffset['left'] + rulerwidth;
-      var wOffsetTop = wOffset['top'] + rulerwidth;
+      var wOffsetLeft = wOffset.left + rulerwidth;
+      var wOffsetTop = wOffset.top + rulerwidth;
       var delta = evt.wheelDelta ? evt.wheelDelta : evt.detail ? -evt.detail : 0;
 
       if (!delta) {
@@ -16488,6 +16787,11 @@ function SvgCanvas(container, config) {
     var matrix;
     var lastX, lastY;
     var allowDbl;
+    /**
+     *
+     * @param {Integer} index
+     * @returns {undefined}
+     */
 
     function setCursor(index) {
       var empty = textinput.value === '';
@@ -16545,6 +16849,14 @@ function SvgCanvas(container, config) {
         selblock.setAttribute('d', '');
       }
     }
+    /**
+     *
+     * @param {Integer} start
+     * @param {Integer} end
+     * @param {boolean} skipInput
+     * @returns {undefined}
+     */
+
 
     function setSelection(start, end, skipInput) {
       if (start === end) {
@@ -16582,6 +16894,13 @@ function SvgCanvas(container, config) {
         display: 'inline'
       });
     }
+    /**
+     *
+     * @param {Float} mouseX
+     * @param {Float} mouseY
+     * @returns {Integer}
+     */
+
 
     function getIndexFromPoint(mouseX, mouseY) {
       // Position cursor here
@@ -16616,10 +16935,25 @@ function SvgCanvas(container, config) {
 
       return charpos;
     }
+    /**
+     *
+     * @param {Float} mouseX
+     * @param {Float} mouseY
+     * @returns {undefined}
+     */
+
 
     function setCursorFromPoint(mouseX, mouseY) {
       setCursor(getIndexFromPoint(mouseX, mouseY));
     }
+    /**
+     *
+     * @param {Float} x
+     * @param {Float} y
+     * @param {boolean} apply
+     * @returns {undefined}
+     */
+
 
     function setEndSelectionFromPoint(x, y, apply) {
       var i1 = textinput.selectionStart;
@@ -16628,6 +16962,13 @@ function SvgCanvas(container, config) {
       var end = Math.max(i1, i2);
       setSelection(start, end, !apply);
     }
+    /**
+     *
+     * @param {Float} xIn
+     * @param {Float} yIn
+     * @returns {module:math.XYObject}
+     */
+
 
     function screenToPt(xIn, yIn) {
       var out = {
@@ -16645,6 +16986,13 @@ function SvgCanvas(container, config) {
 
       return out;
     }
+    /**
+     *
+     * @param {Float} xIn
+     * @param {Float} yIn
+     * @returns {module:math.XYObject}
+     */
+
 
     function ptToScreen(xIn, yIn) {
       var out = {
@@ -16671,11 +17019,23 @@ function SvgCanvas(container, config) {
     }
     */
 
+    /**
+     *
+     * @param {Event} evt
+     * @returns {undefined}
+     */
+
 
     function selectAll(evt) {
       setSelection(0, curtext.textContent.length);
       $$9(this).unbind(evt);
     }
+    /**
+     *
+     * @param {Event} evt
+     * @returns {undefined}
+     */
+
 
     function selectWord(evt) {
       if (!allowDbl || !curtext) {
@@ -17005,7 +17365,8 @@ function SvgCanvas(container, config) {
 
   this.svgCanvasToString = function () {
     // keep calling it until there are none to remove
-    while (removeUnusedDefElems() > 0) {}
+    while (removeUnusedDefElems() > 0) {} // eslint-disable-line no-empty
+
 
     pathActions$$1.clear(true); // Keep SVG-Edit comment on top
 
@@ -17066,13 +17427,12 @@ function SvgCanvas(container, config) {
     if (elem) {
       cleanupElement(elem);
       var attrs = Array.from(elem.attributes);
-      var i;
       var childs = elem.childNodes;
       attrs.sort(function (a, b) {
         return a.name > b.name ? -1 : 1;
       });
 
-      for (i = 0; i < indent; i++) {
+      for (var i = 0; i < indent; i++) {
         out.push(' ');
       }
 
@@ -17113,19 +17473,19 @@ function SvgCanvas(container, config) {
           }
 
           $$9.each(this.attributes, function (i, attr) {
-            var uri = attr.namespaceURI;
+            var u = attr.namespaceURI;
 
-            if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {
-              nsuris[uri] = true;
-              out.push(' xmlns:' + nsMap[uri] + '="' + uri + '"');
+            if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {
+              nsuris[u] = true;
+              out.push(' xmlns:' + nsMap[u] + '="' + u + '"');
             }
           });
         });
-        i = attrs.length;
+        var _i3 = attrs.length;
         var attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];
 
-        while (i--) {
-          var attr = attrs[i];
+        while (_i3--) {
+          var attr = attrs[_i3];
           var attrVal = toXml(attr.value); // Namespaces have already been dealt with, so skip
 
           if (attr.nodeName.startsWith('xmlns:')) {
@@ -17146,13 +17506,13 @@ function SvgCanvas(container, config) {
       } else {
         // Skip empty defs
         if (elem.nodeName === 'defs' && !elem.firstChild) {
-          return;
+          return '';
         }
 
         var mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];
 
-        for (i = attrs.length - 1; i >= 0; i--) {
-          var _attr = attrs[i];
+        for (var _i4 = attrs.length - 1; _i4 >= 0; _i4--) {
+          var _attr = attrs[_i4];
 
           var _attrVal = toXml(_attr.value); // remove bogus attributes added by Gecko
 
@@ -17208,27 +17568,29 @@ function SvgCanvas(container, config) {
         indent++;
         var bOneLine = false;
 
-        for (i = 0; i < childs.length; i++) {
-          var child = childs.item(i);
+        for (var _i5 = 0; _i5 < childs.length; _i5++) {
+          var child = childs.item(_i5);
 
           switch (child.nodeType) {
             case 1:
               // element node
               out.push('\n');
-              out.push(this.svgToString(childs.item(i), indent));
+              out.push(this.svgToString(childs.item(_i5), indent));
               break;
 
             case 3:
-              // text node
-              var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
+              {
+                // text node
+                var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
 
-              if (str !== '') {
-                bOneLine = true;
-                out.push(String(toXml(str)));
+                if (str !== '') {
+                  bOneLine = true;
+                  out.push(String(toXml(str)));
+                }
+
+                break;
               }
 
-              break;
-
             case 4:
               // cdata node
               out.push('\n');
@@ -17255,7 +17617,7 @@ function SvgCanvas(container, config) {
         if (!bOneLine) {
           out.push('\n');
 
-          for (i = 0; i < indent; i++) {
+          for (var _i6 = 0; _i6 < indent; _i6++) {
             out.push(' ');
           }
         }
@@ -17282,13 +17644,14 @@ function SvgCanvas(container, config) {
   * Converts a given image file to a data URL when possible, then runs a given callback.
   * @function module:svgcanvas.SvgCanvas#embedImage
   * @param {string} src - The path/URL of the image
-  * @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found
   * @returns {Promise} Resolves to Data URL (string|false)
   */
 
 
-  this.embedImage = function (src, callback) {
+  this.embedImage = function (src) {
+    // Todo: Remove this Promise in favor of making an async/await `Image.load` utility
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       // load in the image and once it's loaded, get the dimensions
       $$9(new Image()).load(function (response, status, xhr) {
         if (status === 'error') {
@@ -17312,11 +17675,6 @@ function SvgCanvas(container, config) {
         }
 
         lastGoodImgUrl = src;
-
-        if (callback) {
-          callback(encodableImages[src]);
-        }
-
         resolve(encodableImages[src]);
       }).attr('src', src);
     });
@@ -17339,7 +17697,9 @@ function SvgCanvas(container, config) {
   */
 
 
-  this.open = function () {};
+  this.open = function () {
+    /* */
+  };
   /**
   * Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.
   * This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save
@@ -17365,7 +17725,7 @@ function SvgCanvas(container, config) {
     call('saved', str);
   };
   /**
-  * @typedef {GenericObject} module:svgcanvas.IssuesAndCodes
+  * @typedef {PlainObject} module:svgcanvas.IssuesAndCodes
   * @property {string[]} issueCodes The locale-independent code names
   * @property {string[]} issues The localized descriptions
   */
@@ -17424,13 +17784,6 @@ function SvgCanvas(container, config) {
   * @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added
   */
 
-  /**
-   * Function to run when image data is found
-   * @callback module:svgcanvas.ImageExportedCallback
-   * @param {module:svgcanvas.ImageExportedResults} obj
-   * @returns {undefined}
-   */
-
   /**
   * Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,
   * then calls "exported" with an object including the string, image
@@ -17439,7 +17792,6 @@ function SvgCanvas(container, config) {
   * @param {"PNG"|"JPEG"|"BMP"|"WEBP"|"ICO"} [imgType="PNG"]
   * @param {Float} [quality] Between 0 and 1
   * @param {string} [exportWindowName]
-  * @param {module:svgcanvas.ImageExportedCallback} [cb]
   * @param {PlainObject} [opts]
   * @param {boolean} [opts.avoidEvent]
   * @fires module:svgcanvas.SvgCanvas#event:exported
@@ -17447,29 +17799,72 @@ function SvgCanvas(container, config) {
   * @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}
   */
 
-  this.rasterExport = function (imgType, quality, exportWindowName, cb) {
-    var opts = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
-    var type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
-    var mimeType = 'image/' + type.toLowerCase();
-
-    var _getIssues = getIssues(),
-        issues = _getIssues.issues,
-        issueCodes = _getIssues.issueCodes;
-
-    var svg = this.svgCanvasToString();
-    return new Promise(
+  this.rasterExport =
+  /*#__PURE__*/
+  function () {
+    var _ref4 = _asyncToGenerator(
     /*#__PURE__*/
-    function () {
-      var _ref4 = _asyncToGenerator(
-      /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee2(resolve, reject) {
-        var _ref5, c, dataURLType, datauri, bloburl, done;
+    regeneratorRuntime.mark(function _callee2(imgType, quality, exportWindowName) {
+      var opts,
+          type,
+          mimeType,
+          _getIssues,
+          issues,
+          issueCodes,
+          svg,
+          _ref5,
+          c,
+          _args2 = arguments;
 
-        return regeneratorRuntime.wrap(function _callee2$(_context2) {
-          while (1) {
-            switch (_context2.prev = _context2.next) {
-              case 0:
-                done = function _ref6() {
+      return regeneratorRuntime.wrap(function _callee2$(_context2) {
+        while (1) {
+          switch (_context2.prev = _context2.next) {
+            case 0:
+              opts = _args2.length > 3 && _args2[3] !== undefined ? _args2[3] : {};
+              type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
+              mimeType = 'image/' + type.toLowerCase();
+              _getIssues = getIssues(), issues = _getIssues.issues, issueCodes = _getIssues.issueCodes;
+              svg = this.svgCanvasToString();
+
+              if (canvg) {
+                _context2.next = 10;
+                break;
+              }
+
+              _context2.next = 8;
+              return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
+                global: 'canvg'
+              });
+
+            case 8:
+              _ref5 = _context2.sent;
+              canvg = _ref5.canvg;
+
+            case 10:
+              if (!$$9('#export_canvas').length) {
+                $$9('<canvas>', {
+                  id: 'export_canvas'
+                }).hide().appendTo('body');
+              }
+
+              c = $$9('#export_canvas')[0];
+              c.width = canvas.contentW;
+              c.height = canvas.contentH;
+              _context2.next = 16;
+              return canvg(c, svg);
+
+            case 16:
+              return _context2.abrupt("return", new Promise(function (resolve, reject) {
+                // eslint-disable-line promise/avoid-new
+                var dataURLType = type.toLowerCase();
+                var datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
+                var bloburl;
+                /**
+                 * Called when `bloburl` is available for export.
+                 * @returns {undefined}
+                 */
+
+                function done() {
                   var obj = {
                     datauri: datauri,
                     bloburl: bloburl,
@@ -17486,72 +17881,33 @@ function SvgCanvas(container, config) {
                     call('exported', obj);
                   }
 
-                  if (cb) {
-                    cb(obj);
-                  }
-
                   resolve(obj);
-                };
-
-                if (canvg) {
-                  _context2.next = 6;
-                  break;
                 }
 
-                _context2.next = 4;
-                return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
-                  global: 'canvg'
-                });
-
-              case 4:
-                _ref5 = _context2.sent;
-                canvg = _ref5.canvg;
-
-              case 6:
-                if (!$$9('#export_canvas').length) {
-                  $$9('<canvas>', {
-                    id: 'export_canvas'
-                  }).hide().appendTo('body');
+                if (c.toBlob) {
+                  c.toBlob(function (blob) {
+                    bloburl = createObjectURL(blob);
+                    done();
+                  }, mimeType, quality);
+                  return;
                 }
 
-                c = $$9('#export_canvas')[0];
-                c.width = canvas.contentW;
-                c.height = canvas.contentH;
-                _context2.next = 12;
-                return canvg(c, svg);
-
-              case 12:
-                dataURLType = type.toLowerCase();
-                datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
-
-                if (!c.toBlob) {
-                  _context2.next = 17;
-                  break;
-                }
-
-                c.toBlob(function (blob) {
-                  bloburl = createObjectURL(blob);
-                  done();
-                }, mimeType, quality);
-                return _context2.abrupt("return");
-
-              case 17:
                 bloburl = dataURLToObjectURL(datauri);
                 done();
+              }));
 
-              case 19:
-              case "end":
-                return _context2.stop();
-            }
+            case 17:
+            case "end":
+              return _context2.stop();
           }
-        }, _callee2, this);
-      }));
+        }
+      }, _callee2, this);
+    }));
 
-      return function (_x4, _x5) {
-        return _ref4.apply(this, arguments);
-      };
-    }());
-  };
+    return function (_x4, _x5, _x6) {
+      return _ref4.apply(this, arguments);
+    };
+  }();
   /**
    * @external jsPDF
    */
@@ -17580,118 +17936,114 @@ function SvgCanvas(container, config) {
   * @property {string} exportWindowName
   */
 
-  /**
-   * Function to run when PDF data is found
-   * @callback module:svgcanvas.PDFExportedCallback
-   * @param {module:svgcanvas.PDFExportedResults} obj
-   * @returns {undefined}
-   */
-
   /**
   * Generates a PDF based on the current image, then calls "exportedPDF" with
   * an object including the string, the data URL, and any issues found.
   * @function module:svgcanvas.SvgCanvas#exportPDF
   * @param {string} [exportWindowName] Will also be used for the download file name here
   * @param {external:jsPDF.OutputType} [outputType="dataurlstring"]
-  * @param {module:svgcanvas.PDFExportedCallback} [cb]
   * @fires module:svgcanvas.SvgCanvas#event:exportedPDF
   * @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}
   */
 
 
-  this.exportPDF = function (exportWindowName) {
-    var outputType = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : isChrome() ? 'save' : undefined;
-    var cb = arguments.length > 2 ? arguments[2] : undefined;
-    var that = this;
-    return new Promise(
+  this.exportPDF =
+  /*#__PURE__*/
+  function () {
+    var _ref6 = _asyncToGenerator(
     /*#__PURE__*/
-    function () {
-      var _ref7 = _asyncToGenerator(
-      /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee3(resolve, reject) {
-        var modularVersion, res, orientation, unit, doc, docTitle, _getIssues2, issues, issueCodes, svg, obj;
+    regeneratorRuntime.mark(function _callee3(exportWindowName) {
+      var outputType,
+          modularVersion,
+          res,
+          orientation,
+          unit,
+          doc,
+          docTitle,
+          _getIssues2,
+          issues,
+          issueCodes,
+          svg,
+          obj,
+          _args3 = arguments;
 
-        return regeneratorRuntime.wrap(function _callee3$(_context3) {
-          while (1) {
-            switch (_context3.prev = _context3.next) {
-              case 0:
-                if (window.jsPDF) {
-                  _context3.next = 6;
-                  break;
-                }
+      return regeneratorRuntime.wrap(function _callee3$(_context3) {
+        while (1) {
+          switch (_context3.prev = _context3.next) {
+            case 0:
+              outputType = _args3.length > 1 && _args3[1] !== undefined ? _args3[1] : isChrome() ? 'save' : undefined;
 
-                _context3.next = 3;
-                return importScript([// We do not currently have these paths configurable as they are
-                //   currently global-only, so not Rolled-up
-                'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
+              if (window.jsPDF) {
+                _context3.next = 7;
+                break;
+              }
 
-              case 3:
-                modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
+              _context3.next = 4;
+              return importScript([// We do not currently have these paths configurable as they are
+              //   currently global-only, so not Rolled-up
+              'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
 
-                _context3.next = 6;
-                return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
-                  type: modularVersion ? 'module' : 'text/javascript'
-                });
+            case 4:
+              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
 
-              case 6:
-                res = getResolution();
-                orientation = res.w > res.h ? 'landscape' : 'portrait';
-                unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
-                // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
+              _context3.next = 7;
+              return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
+                type: modularVersion ? 'module' : 'text/javascript'
+              });
 
-                doc = jsPDF({
-                  orientation: orientation,
-                  unit: unit,
-                  format: [res.w, res.h] // , compressPdf: true
+            case 7:
+              res = getResolution();
+              orientation = res.w > res.h ? 'landscape' : 'portrait';
+              unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
+              // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
 
-                });
-                docTitle = getDocumentTitle();
-                doc.setProperties({
-                  title: docTitle
-                  /* ,
-                  subject: '',
-                  author: '',
-                  keywords: '',
-                  creator: '' */
+              doc = jsPDF({
+                orientation: orientation,
+                unit: unit,
+                format: [res.w, res.h] // , compressPdf: true
 
-                });
-                _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
-                svg = that.svgCanvasToString();
-                doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
-                //  window; todo: configure this and other export
-                //  options to optionally work in this manner as
-                //  opposed to opening a new tab
+              });
+              docTitle = getDocumentTitle();
+              doc.setProperties({
+                title: docTitle
+                /* ,
+                subject: '',
+                author: '',
+                keywords: '',
+                creator: '' */
 
-                outputType = outputType || 'dataurlstring';
-                obj = {
-                  svg: svg,
-                  issues: issues,
-                  issueCodes: issueCodes,
-                  exportWindowName: exportWindowName,
-                  outputType: outputType
-                };
-                obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+              });
+              _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
+              svg = this.svgCanvasToString();
+              doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
+              //  window; todo: configure this and other export
+              //  options to optionally work in this manner as
+              //  opposed to opening a new tab
 
-                if (cb) {
-                  cb(obj);
-                }
+              outputType = outputType || 'dataurlstring';
+              obj = {
+                svg: svg,
+                issues: issues,
+                issueCodes: issueCodes,
+                exportWindowName: exportWindowName,
+                outputType: outputType
+              };
+              obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+              call('exportedPDF', obj);
+              return _context3.abrupt("return", obj);
 
-                resolve(obj);
-                call('exportedPDF', obj);
-
-              case 21:
-              case "end":
-                return _context3.stop();
-            }
+            case 21:
+            case "end":
+              return _context3.stop();
           }
-        }, _callee3, this);
-      }));
+        }
+      }, _callee3, this);
+    }));
 
-      return function (_x6, _x7) {
-        return _ref7.apply(this, arguments);
-      };
-    }());
-  };
+    return function (_x7) {
+      return _ref6.apply(this, arguments);
+    };
+  }();
   /**
   * Returns the current drawing as raw SVG XML text.
   * @function module:svgcanvas.SvgCanvas#getSvgString
@@ -17885,18 +18237,18 @@ function SvgCanvas(container, config) {
     }
 
     elems.each(function () {
-      var grad = this;
+      var grad = this; // eslint-disable-line consistent-this
 
       if ($$9(grad).attr('gradientUnits') === 'userSpaceOnUse') {
         // TODO: Support more than one element with this ref by duplicating parent grad
-        var _elems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
+        var fillStrokeElems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
 
-        if (!_elems.length) {
+        if (!fillStrokeElems.length) {
           return;
         } // get object's bounding box
 
 
-        var bb = getBBox(_elems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
+        var bb = getBBox(fillStrokeElems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
         // in which we shouldn't need to convert anyway.
 
         if (!bb) {
@@ -17988,8 +18340,8 @@ function SvgCanvas(container, config) {
 
       if (vb) {
         var nums = vb.split(' ');
-        pos.x -= +nums[0];
-        pos.y -= +nums[1];
+        pos.x -= Number(nums[0]);
+        pos.y -= Number(nums[1]);
       } // Not ideal, but works
 
 
@@ -18055,7 +18407,7 @@ function SvgCanvas(container, config) {
         try {
           recalculateDimensions(n);
         } catch (e) {
-          console.log(e);
+          console.log(e); // eslint-disable-line no-console
         }
       }); // Give ID for any visible element missing one
 
@@ -18073,7 +18425,7 @@ function SvgCanvas(container, config) {
 
       addCommandToHistory(batchCmd);
     } else {
-      console.log('Unexpected element to ungroup:', elem);
+      console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console
     }
   };
   /**
@@ -18129,7 +18481,8 @@ function SvgCanvas(container, config) {
 
 
       content.find('image').each(function () {
-        var image = this;
+        var image = this; // eslint-disable-line consistent-this
+
         preventClickDefault(image);
         var val = getHref(this);
 
@@ -18243,7 +18596,8 @@ function SvgCanvas(container, config) {
       if (!preventUndo) addCommandToHistory(batchCmd);
       call('changed', [svgcontent]);
     } catch (e) {
-      console.log(e);
+      console.log(e); // eslint-disable-line no-console
+
       return false;
     }
 
@@ -18306,12 +18660,12 @@ function SvgCanvas(container, config) {
         vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];
 
         for (j = 0; j < 4; ++j) {
-          vb[j] = +vb[j];
+          vb[j] = Number(vb[j]);
         } // TODO: properly handle preserveAspectRatio
 
 
         var // canvasw = +svgcontent.getAttribute('width'),
-        canvash = +svgcontent.getAttribute('height'); // imported content should be 1/3 of the canvas on its largest dimension
+        canvash = Number(svgcontent.getAttribute('height')); // imported content should be 1/3 of the canvas on its largest dimension
 
         if (innerh > innerw) {
           ts = 'scale(' + canvash / 3 / vb[3] + ')';
@@ -18370,7 +18724,8 @@ function SvgCanvas(container, config) {
       addCommandToHistory(batchCmd);
       call('changed', [svgcontent]);
     } catch (e) {
-      console.log(e);
+      console.log(e); // eslint-disable-line no-console
+
       return null;
     } // we want to return the element so we can automatically select it
 
@@ -18380,8 +18735,27 @@ function SvgCanvas(container, config) {
   //  canvas is a dependency for all of these
 
 
-  ['identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer', 'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition', 'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers', 'leaveContext', 'setContext'].forEach(function (prop) {
-    canvas[prop] = draw[prop];
+  var dr = {
+    identifyLayers: identifyLayers,
+    createLayer: createLayer,
+    cloneLayer: cloneLayer,
+    deleteCurrentLayer: deleteCurrentLayer,
+    setCurrentLayer: setCurrentLayer,
+    renameCurrentLayer: renameCurrentLayer,
+    setCurrentLayerPosition: setCurrentLayerPosition,
+    setLayerVisibility: setLayerVisibility,
+    moveSelectedToLayer: moveSelectedToLayer,
+    mergeLayer: mergeLayer,
+    mergeAllLayers: mergeAllLayers,
+    leaveContext: leaveContext,
+    setContext: setContext
+  };
+  Object.entries(dr).forEach(function (_ref7) {
+    var _ref8 = _slicedToArray(_ref7, 2),
+        prop = _ref8[0],
+        propVal = _ref8[1];
+
+    canvas[prop] = propVal;
   });
   init$3(
   /**
@@ -18512,6 +18886,7 @@ function SvgCanvas(container, config) {
 
   this.setUiStrings = function (strs) {
     Object.assign(uiStrings, strs.notification);
+    $$9 = jQueryPluginDBox($$9, strs.common);
     setUiStrings(strs);
   };
   /**
@@ -18527,8 +18902,9 @@ function SvgCanvas(container, config) {
   };
   /**
   * @function module:svgcanvas.SvgCanvas#getTitle
-  * @param {Element} elem
-  * @returns {string|undefined} the current group/SVG's title contents
+  * @param {Element} [elem]
+  * @returns {string|undefined} the current group/SVG's title contents or
+  * `undefined` if no element is passed nd there are no selected elements.
   */
 
 
@@ -18536,7 +18912,7 @@ function SvgCanvas(container, config) {
     elem = elem || selectedElements[0];
 
     if (!elem) {
-      return;
+      return undefined;
     }
 
     elem = $$9(elem).data('gsvg') || $$9(elem).data('symbol') || elem;
@@ -18756,6 +19132,7 @@ function SvgCanvas(container, config) {
     var bb;
 
     var calcZoom = function calcZoom(bb) {
+      // eslint-disable-line no-shadow
       if (!bb) {
         return false;
       }
@@ -18787,28 +19164,34 @@ function SvgCanvas(container, config) {
 
     switch (val) {
       case 'selection':
-        if (!selectedElements[0]) {
-          return;
+        {
+          if (!selectedElements[0]) {
+            return undefined;
+          }
+
+          var selectedElems = $$9.map(selectedElements, function (n) {
+            if (n) {
+              return n;
+            }
+
+            return undefined;
+          });
+          bb = getStrokedBBoxDefaultVisible(selectedElems);
+          break;
         }
 
-        var selectedElems = $$9.map(selectedElements, function (n) {
-          if (n) {
-            return n;
-          }
-        });
-        bb = getStrokedBBoxDefaultVisible(selectedElems);
-        break;
-
       case 'canvas':
-        var res = getResolution();
-        spacer = 0.95;
-        bb = {
-          width: res.w,
-          height: res.h,
-          x: 0,
-          y: 0
-        };
-        break;
+        {
+          var res = getResolution();
+          spacer = 0.95;
+          bb = {
+            width: res.w,
+            height: res.h,
+            x: 0,
+            y: 0
+          };
+          break;
+        }
 
       case 'content':
         bb = getStrokedBBoxDefaultVisible();
@@ -18819,7 +19202,7 @@ function SvgCanvas(container, config) {
         break;
 
       default:
-        return;
+        return undefined;
     }
 
     return calcZoom(bb);
@@ -18988,6 +19371,11 @@ function SvgCanvas(container, config) {
       type: 'solidColor'
     };
     var elems = [];
+    /**
+     *
+     * @param {Element} e
+     * @returns {undefined}
+     */
 
     function addNonG(e) {
       if (e.nodeName !== 'g') {
@@ -19003,14 +19391,12 @@ function SvgCanvas(container, config) {
       if (elem) {
         if (elem.tagName === 'g') {
           walkTree(elem, addNonG);
-        } else {
-          if (type === 'fill') {
-            if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
-              elems.push(elem);
-            }
-          } else {
+        } else if (type === 'fill') {
+          if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
             elems.push(elem);
           }
+        } else {
+          elems.push(elem);
         }
       }
     }
@@ -19080,7 +19466,7 @@ function SvgCanvas(container, config) {
           var gradAttrs = $$9(grad).attr(radAttrs);
           var ogAttrs = $$9(og).attr(radAttrs);
           var diff = false;
-          $$9.each(radAttrs, function (i, attr) {
+          $$9.each(radAttrs, function (j, attr) {
             if (gradAttrs[attr] !== ogAttrs[attr]) {
               diff = true;
             }
@@ -19196,6 +19582,11 @@ function SvgCanvas(container, config) {
 
     curProperties.stroke_width = val;
     var elems = [];
+    /**
+     *
+     * @param {Element} e
+     * @returns {undefined}
+     */
 
     function addNonG(e) {
       if (e.nodeName !== 'g') {
@@ -19402,7 +19793,7 @@ function SvgCanvas(container, config) {
         }
 
         if (isWebkit()) {
-          console.log('e', elem);
+          // console.log('e', elem); // eslint-disable-line no-console
           elem.removeAttribute('filter');
           elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');
         }
@@ -19411,6 +19802,11 @@ function SvgCanvas(container, config) {
         canvas.setBlurOffsets(filter, val);
       }
     };
+    /**
+     *
+     * @returns {undefined}
+     */
+
 
     function finishChange() {
       var bCmd = canvas.undoMgr.finishUndoableChange();
@@ -19423,29 +19819,26 @@ function SvgCanvas(container, config) {
     * Sets the `x`, `y`, `width`, `height` values of the filter element in order to
     * make the blur not be clipped. Removes them if not neeeded.
     * @function module:svgcanvas.SvgCanvas#setBlurOffsets
-    * @param {Element} filter - The filter DOM element to update
+    * @param {Element} filterElem - The filter DOM element to update
     * @param {Float} stdDev - The standard deviation value on which to base the offset size
     * @returns {undefined}
     */
 
 
-    canvas.setBlurOffsets = function (filter, stdDev) {
+    canvas.setBlurOffsets = function (filterElem, stdDev) {
       if (stdDev > 3) {
         // TODO: Create algorithm here where size is based on expected blur
-        assignAttributes(filter, {
+        assignAttributes(filterElem, {
           x: '-50%',
           y: '-50%',
           width: '200%',
           height: '200%'
-        }, 100);
-      } else {
-        // Removing these attributes hides text in Chrome (see Issue 579)
-        if (!isWebkit()) {
-          filter.removeAttribute('x');
-          filter.removeAttribute('y');
-          filter.removeAttribute('width');
-          filter.removeAttribute('height');
-        }
+        }, 100); // Removing these attributes hides text in Chrome (see Issue 579)
+      } else if (!isWebkit()) {
+        filterElem.removeAttribute('x');
+        filterElem.removeAttribute('y');
+        filterElem.removeAttribute('width');
+        filterElem.removeAttribute('height');
       }
     };
     /**
@@ -19527,7 +19920,7 @@ function SvgCanvas(container, config) {
     // should only have one element selected
     var selected = selectedElements[0];
 
-    if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+    if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
       return selected.getAttribute('font-weight') === 'bold';
     }
 
@@ -19544,7 +19937,7 @@ function SvgCanvas(container, config) {
   this.setBold = function (b) {
     var selected = selectedElements[0];
 
-    if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+    if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
       changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');
     }
 
@@ -19562,7 +19955,7 @@ function SvgCanvas(container, config) {
   this.getItalic = function () {
     var selected = selectedElements[0];
 
-    if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+    if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
       return selected.getAttribute('font-style') === 'italic';
     }
 
@@ -19579,7 +19972,7 @@ function SvgCanvas(container, config) {
   this.setItalic = function (i) {
     var selected = selectedElements[0];
 
-    if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+    if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
       changeSelectedAttribute('font-style', i ? 'italic' : 'normal');
     }
 
@@ -19667,7 +20060,7 @@ function SvgCanvas(container, config) {
   this.getText = function () {
     var selected = selectedElements[0];
 
-    if (selected == null) {
+    if (isNullish(selected)) {
       return '';
     }
 
@@ -19780,7 +20173,7 @@ function SvgCanvas(container, config) {
   this.setRectRadius = function (val) {
     var selected = selectedElements[0];
 
-    if (selected != null && selected.tagName === 'rect') {
+    if (!isNullish(selected) && selected.tagName === 'rect') {
       var r = selected.getAttribute('rx');
 
       if (r !== String(val)) {
@@ -19842,14 +20235,14 @@ function SvgCanvas(container, config) {
 
 
   this.convertToPath = function (elem, getBBox$$1) {
-    if (elem == null) {
+    if (isNullish(elem)) {
       var elems = selectedElements;
-      $$9.each(elems, function (i, elem) {
-        if (elem) {
-          canvas.convertToPath(elem);
+      $$9.each(elems, function (i, el) {
+        if (el) {
+          canvas.convertToPath(el);
         }
       });
-      return;
+      return undefined;
     }
 
     if (getBBox$$1) {
@@ -19870,7 +20263,7 @@ function SvgCanvas(container, config) {
       opacity: curShape.opacity,
       visibility: 'hidden'
     };
-    return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory);
+    return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory);
   };
   /**
   * This function makes the changes to the elements. It does not add the change
@@ -19890,13 +20283,12 @@ function SvgCanvas(container, config) {
 
     elems = elems || selectedElements;
     var i = elems.length;
-    var noXYElems = ['g', 'polyline', 'path'];
-    var goodGAttrs = ['transform', 'opacity', 'filter'];
+    var noXYElems = ['g', 'polyline', 'path']; // const goodGAttrs = ['transform', 'opacity', 'filter'];
 
     var _loop = function _loop() {
       var elem = elems[i];
 
-      if (elem == null) {
+      if (isNullish(elem)) {
         return "continue";
       } // Set x,y vals on elements that don't have them
 
@@ -19908,14 +20300,13 @@ function SvgCanvas(container, config) {
         canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);
         return "continue";
       } // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky
-      // TODO: FIXME: This doesn't seem right. Where's the body of this if statement?
+      // TODO: FIXME: Missing statement body
+      // if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}
 
 
-      if (elem.tagName === 'g' && goodGAttrs.includes(attr)) ;
-
       var oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);
 
-      if (oldval == null) {
+      if (isNullish(oldval)) {
         oldval = '';
       }
 
@@ -20059,7 +20450,7 @@ function SvgCanvas(container, config) {
     for (var i = 0; i < len; ++i) {
       var selected = selectedElements[i];
 
-      if (selected == null) {
+      if (isNullish(selected)) {
         break;
       }
 
@@ -20149,6 +20540,12 @@ function SvgCanvas(container, config) {
 
     var changedIDs = {}; // Recursively replace IDs and record the changes
 
+    /**
+     *
+     * @param {module:svgcanvas.SVGAsJSON} elem
+     * @returns {undefined}
+     */
+
     function checkIDs(elem) {
       if (elem.attr && elem.attr.id) {
         changedIDs[elem.attr.id] = getNextId();
@@ -20277,7 +20674,7 @@ function SvgCanvas(container, config) {
     while (i--) {
       var elem = selectedElements[i];
 
-      if (elem == null) {
+      if (isNullish(elem)) {
         continue;
       }
 
@@ -20304,7 +20701,7 @@ function SvgCanvas(container, config) {
   * @function module:svgcanvas.SvgCanvas#pushGroupProperties
   * @param {SVGAElement|SVGGElement} g
   * @param {boolean} undoable
-  * @returns {undefined}
+  * @returns {BatchCommand|undefined}
   */
 
 
@@ -20488,6 +20885,8 @@ function SvgCanvas(container, config) {
     if (undoable && !batchCmd.isEmpty()) {
       return batchCmd;
     }
+
+    return undefined;
   };
   /**
   * Unwraps all the elements in a selected group (`g`) element. This requires
@@ -20584,7 +20983,7 @@ function SvgCanvas(container, config) {
         _selectedElements2 = _slicedToArray(_selectedElements, 1),
         selected = _selectedElements2[0];
 
-    if (selected != null) {
+    if (!isNullish(selected)) {
       var t = selected;
       var oldParent = t.parentNode;
       var oldNextSibling = t.nextSibling;
@@ -20611,7 +21010,7 @@ function SvgCanvas(container, config) {
         _selectedElements4 = _slicedToArray(_selectedElements3, 1),
         selected = _selectedElements4[0];
 
-    if (selected != null) {
+    if (!isNullish(selected)) {
       var t = selected;
       var oldParent = t.parentNode;
       var oldNextSibling = t.nextSibling;
@@ -20668,10 +21067,11 @@ function SvgCanvas(container, config) {
           foundCur = true;
         }
 
-        return;
+        return true;
       }
 
-      closest = this;
+      closest = this; // eslint-disable-line consistent-this
+
       return false;
     });
 
@@ -20697,7 +21097,7 @@ function SvgCanvas(container, config) {
   * @param {Float} dy - Float with the distance to move on the y-axis
   * @param {boolean} undoable - Boolean indicating whether or not the action should be undoable
   * @fires module:svgcanvas.SvgCanvas#event:changed
-  * @returns {BatchCommand} Batch command for the move
+  * @returns {BatchCommand|undefined} Batch command for the move
   */
 
 
@@ -20716,7 +21116,7 @@ function SvgCanvas(container, config) {
     while (i--) {
       var selected = selectedElements[i];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         // if (i === 0) {
         //   selectedBBoxes[0] = utilsGetBBox(selected);
         // }
@@ -20764,6 +21164,8 @@ function SvgCanvas(container, config) {
       call('changed', selectedElements);
       return batchCmd;
     }
+
+    return undefined;
   };
   /**
   * Create deep DOM copies (clones) of all selected elements and move them slightly
@@ -20780,9 +21182,15 @@ function SvgCanvas(container, config) {
     var batchCmd = new BatchCommand$1('Clone Elements'); // find all the elements selected (stop at first null)
 
     var len = selectedElements.length;
+    /**
+     * Sorts an array numerically and ascending.
+     * @param {Element} a
+     * @param {Element} b
+     * @returns {Integer}
+     */
 
     function sortfunction(a, b) {
-      return $$9(b).index() - $$9(a).index(); // causes an array to be sorted numerically and ascending
+      return $$9(b).index() - $$9(a).index();
     }
 
     selectedElements.sort(sortfunction);
@@ -20790,7 +21198,7 @@ function SvgCanvas(container, config) {
     for (i = 0; i < len; ++i) {
       elem = selectedElements[i];
 
-      if (elem == null) {
+      if (isNullish(elem)) {
         break;
       }
     } // use slice to quickly get the subset of elements we need
@@ -20843,7 +21251,7 @@ function SvgCanvas(container, config) {
         curheight = Number.MIN_VALUE;
 
     for (var i = 0; i < len; ++i) {
-      if (selectedElements[i] == null) {
+      if (isNullish(selectedElements[i])) {
         break;
       }
 
@@ -20908,45 +21316,45 @@ function SvgCanvas(container, config) {
     var dx = new Array(len);
     var dy = new Array(len);
 
-    for (var _i2 = 0; _i2 < len; ++_i2) {
-      if (selectedElements[_i2] == null) {
+    for (var _i7 = 0; _i7 < len; ++_i7) {
+      if (isNullish(selectedElements[_i7])) {
         break;
       } // const elem = selectedElements[i];
 
 
-      var bbox = bboxes[_i2];
-      dx[_i2] = 0;
-      dy[_i2] = 0;
+      var bbox = bboxes[_i7];
+      dx[_i7] = 0;
+      dy[_i7] = 0;
 
       switch (type) {
         case 'l':
           // left (horizontal)
-          dx[_i2] = minx - bbox.x;
+          dx[_i7] = minx - bbox.x;
           break;
 
         case 'c':
           // center (horizontal)
-          dx[_i2] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
+          dx[_i7] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
           break;
 
         case 'r':
           // right (horizontal)
-          dx[_i2] = maxx - (bbox.x + bbox.width);
+          dx[_i7] = maxx - (bbox.x + bbox.width);
           break;
 
         case 't':
           // top (vertical)
-          dy[_i2] = miny - bbox.y;
+          dy[_i7] = miny - bbox.y;
           break;
 
         case 'm':
           // middle (vertical)
-          dy[_i2] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
+          dy[_i7] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
           break;
 
         case 'b':
           // bottom (vertical)
-          dy[_i2] = maxy - (bbox.y + bbox.height);
+          dy[_i7] = maxy - (bbox.y + bbox.height);
           break;
       }
     }
@@ -21105,7 +21513,7 @@ function SvgCanvas(container, config) {
       return;
     }
 
-    if (curElem == null) {
+    if (isNullish(curElem)) {
       num = next ? allElems.length - 1 : 0;
       elem = allElems[num];
     } else {
@@ -21227,7 +21635,7 @@ function SvgCanvas(container, config) {
  * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
 */
 // We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`
-function jqPluginJSHotkeys (b) {
+function jQueryPluginJSHotkeys (b) {
   b.hotkeys = {
     version: "0.8",
     specialKeys: {
@@ -21379,7 +21787,7 @@ function jqPluginJSHotkeys (b) {
  * http://benalman.com/about/license/
  */
 // For sake of modules, added this wrapping export and changed `this` to `window`
-function jqPluginBBQ (jQuery) {
+function jQueryPluginBBQ (jQuery) {
   (function ($, p) {
     var i,
         m = Array.prototype.slice,
@@ -21729,6 +22137,7 @@ function jqPluginBBQ (jQuery) {
   return jQuery;
 }
 
+// Todo: Move to own module (and have it import a modular base64 encoder)
 /**
  * SVG Icon Loader 2.0
  *
@@ -21827,17 +22236,23 @@ $(function() {
  * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object
  * @returns {external:jQuery} The enhanced jQuery object
 */
-function jqPluginSVGIcons ($) {
+
+function jQueryPluginSVGIcons($) {
   var svgIcons = {};
   var fixIDs;
+  /**
+   * List of raster images with each
+   * key being the SVG icon ID to replace, and the value the image file name
+   * @typedef {PlainObject.<string, string>} external:jQuery.svgIcons.Fallback
+  */
+
   /**
   * @function external:jQuery.svgIcons
   * @param {string} file The location of a local SVG or SVGz file
   * @param {PlainObject} [opts]
   * @param {Float} [opts.w] The icon widths
   * @param {Float} [opts.h] The icon heights
-  * @param {PlainObject.<string, string>} [opts.fallback] List of raster images with each
-    key being the SVG icon ID to replace, and the value the image file name
+  * @param {external:jQuery.svgIcons.Fallback} [opts.fallback]
   * @param {string} [opts.fallback_path] The path to use for all images
     listed under "fallback"
   * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,
@@ -21869,7 +22284,7 @@ function jqPluginSVGIcons ($) {
         iconsMade = false,
         dataLoaded = false,
         loadAttempts = 0;
-    var isOpera = !!window.opera,
+    var isOpera = Boolean(window.opera),
         // ua = navigator.userAgent,
     // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),
     dataPre = 'data:image/svg+xml;charset=utf-8;base64,';
@@ -21907,24 +22322,29 @@ function jqPluginSVGIcons ($) {
             $(function () {
               useFallback();
             });
-          } else {
-            if (err.responseText) {
-              svgdoc = parser.parseFromString(err.responseText, 'text/xml');
+          } else if (err.responseText) {
+            svgdoc = parser.parseFromString(err.responseText, 'text/xml');
 
-              if (!svgdoc.childNodes.length) {
-                $(useFallback);
-              }
-
-              $(function () {
-                getIcons('ajax');
-              });
-            } else {
+            if (!svgdoc.childNodes.length) {
               $(useFallback);
             }
+
+            $(function () {
+              getIcons('ajax');
+            });
+          } else {
+            $(useFallback);
           }
         }
       });
     }
+    /**
+     *
+     * @param {"ajax"|0|undefined} evt
+     * @param {boolean} [noWait]
+     * @returns {undefined}
+     */
+
 
     function getIcons(evt, noWait) {
       if (evt !== 'ajax') {
@@ -21972,6 +22392,15 @@ function jqPluginSVGIcons ($) {
         }, 500);
       }
     }
+    /**
+     *
+     * @param {external:jQuery} target
+     * @param {external:jQuery} icon A wrapped `defs` or Image
+     * @param {string} id SVG icon ID
+     * @param {string} setID
+     * @returns {undefined}
+     */
+
 
     function setIcon(target, icon, id, setID) {
       if (isOpera) icon.css('visibility', 'hidden');
@@ -21993,6 +22422,11 @@ function jqPluginSVGIcons ($) {
     }
 
     var holder;
+    /**
+     * @param {external:jQuery} icon A wrapped `defs` or Image
+     * @param {string} id SVG icon ID
+     * @returns {undefined}
+     */
 
     function addIcon(icon, id) {
       if (opts.id_match === undefined || opts.id_match !== false) {
@@ -22001,8 +22435,17 @@ function jqPluginSVGIcons ($) {
 
       svgIcons[id] = icon;
     }
+    /**
+     *
+     * @param {boolean} [toImage]
+     * @param {external:jQuery.svgIcons.Fallback} [fallback]
+     * @returns {undefined}
+     */
 
-    function makeIcons(toImage, fallback) {
+
+    function makeIcons() {
+      var toImage = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
+      var fallback = arguments.length > 1 ? arguments[1] : undefined;
       if (iconsMade) return;
       if (opts.no_img) toImage = false;
       var tempHolder;
@@ -22105,7 +22548,7 @@ function jqPluginSVGIcons ($) {
 
       if (isOpera) {
         idElems = defs.find('*').filter(function () {
-          return !!this.id;
+          return Boolean(this.id);
         });
       } else {
         idElems = defs.find('[id]');
@@ -22155,13 +22598,17 @@ function jqPluginSVGIcons ($) {
       });
       return svgEl;
     };
+    /**
+     * @returns {undefined}
+     */
+
 
     function useFallback() {
       if (file.includes('.svgz')) {
         var regFile = file.replace('.svgz', '.svg');
 
         if (window.console) {
-          console.log('.svgz failed, trying with .svg');
+          console.log('.svgz failed, trying with .svg'); // eslint-disable-line no-console
         }
 
         $.svgIcons(regFile, opts);
@@ -22169,38 +22616,6 @@ function jqPluginSVGIcons ($) {
         makeIcons(false, opts.fallback);
       }
     }
-
-    function encode64(input) {
-      // base64 strings are 4/3 larger than the original string
-      if (window.btoa) return window.btoa(input);
-      var _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-      var output = new Array(Math.floor((input.length + 2) / 3) * 4);
-      var i = 0,
-          p = 0;
-
-      do {
-        var chr1 = input.charCodeAt(i++);
-        var chr2 = input.charCodeAt(i++);
-        var chr3 = input.charCodeAt(i++);
-        var enc1 = chr1 >> 2;
-        var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
-        var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
-        var enc4 = chr3 & 63;
-
-        if (isNaN(chr2)) {
-          enc3 = enc4 = 64;
-        } else if (isNaN(chr3)) {
-          enc4 = 64;
-        }
-
-        output[p++] = _keyStr.charAt(enc1);
-        output[p++] = _keyStr.charAt(enc2);
-        output[p++] = _keyStr.charAt(enc3);
-        output[p++] = _keyStr.charAt(enc4);
-      } while (i < input.length);
-
-      return output.join('');
-    }
   };
   /**
   * @function external:jQuery.getSvgIcon
@@ -22303,8 +22718,12 @@ var ns = {
 
 if (!window.console) {
   window.console = {
-    log: function log(str) {},
-    dir: function dir(str) {}
+    log: function log(str) {
+      /* */
+    },
+    dir: function dir(str) {
+      /* */
+    }
   };
 }
 /**
@@ -22317,7 +22736,7 @@ if (!window.console) {
 */
 
 
-function jqPluginJGraduate ($) {
+function jQueryPluginJGraduate($) {
   if (!$.loadingStylesheets) {
     $.loadingStylesheets = [];
   }
@@ -22483,25 +22902,48 @@ function jqPluginJGraduate ($) {
 
   };
   var isGecko = navigator.userAgent.includes('Gecko/');
+  /**
+  * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs
+  */
+
+  /**
+  * @param {SVGElement} elem
+  * @param {module:jGraduate.Attrs} attrs
+  * @returns {undefined}
+  */
 
   function setAttrs(elem, attrs) {
     if (isGecko) {
-      for (var aname in attrs) {
-        elem.setAttribute(aname, attrs[aname]);
-      }
+      Object.entries(attrs).forEach(function (_ref) {
+        var _ref2 = _slicedToArray(_ref, 2),
+            aname = _ref2[0],
+            val = _ref2[1];
+
+        elem.setAttribute(aname, val);
+      });
     } else {
-      for (var _aname in attrs) {
-        var val = attrs[_aname],
-            prop = elem[_aname];
+      Object.entries(attrs).forEach(function (_ref3) {
+        var _ref4 = _slicedToArray(_ref3, 2),
+            aname = _ref4[0],
+            val = _ref4[1];
+
+        var prop = elem[aname];
 
         if (prop && prop.constructor === 'SVGLength') {
           prop.baseVal.value = val;
         } else {
-          elem.setAttribute(_aname, val);
+          elem.setAttribute(aname, val);
         }
-      }
+      });
     }
   }
+  /**
+  * @param {string} name
+  * @param {module:jGraduate.Attrs} attrs
+  * @param {Element} newparent
+  * @returns {SVGElement}
+  */
+
 
   function mkElem(name, attrs, newparent) {
     var elem = document.createElementNS(ns.svg, name);
@@ -22557,7 +22999,8 @@ function jqPluginJGraduate ($) {
           idref = '#' + $this.attr('id') + ' ';
 
       if (!idref) {
-        alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
+        /* await */
+        $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
         return;
       }
 
@@ -22683,19 +23126,21 @@ function jqPluginJGraduate ($) {
               break;
 
             case 'inverse':
-              // Invert current color for second stop
-              var inverted = '';
+              {
+                // Invert current color for second stop
+                var inverted = '';
 
-              for (var i = 0; i < 6; i += 2) {
-                // const ch = color.substr(i, 2);
-                var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
-                if (inv.length < 2) inv = 0 + inv;
-                inverted += inv;
+                for (var i = 0; i < 6; i += 2) {
+                  // const ch = color.substr(i, 2);
+                  var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
+                  if (inv.length < 2) inv = 0 + inv;
+                  inverted += inv;
+                }
+
+                mkStop(1, '#' + inverted, 1);
+                break;
               }
 
-              mkStop(1, '#' + inverted, 1);
-              break;
-
             case 'white':
               mkStop(1, '#ffffff', 1);
               break;
@@ -22797,16 +23242,25 @@ function jqPluginJGraduate ($) {
           $elem.css(cssName, this.value * MAX);
         }).change();
       });
+      /**
+       *
+       * @param {Float} n
+       * @param {Float|string} colr
+       * @param {Float} opac
+       * @param {boolean} [sel]
+       * @param {SVGStopElement} [stopElem]
+       * @returns {SVGStopElement}
+       */
 
-      function mkStop(n, color, opac, sel, stopElem) {
+      function mkStop(n, colr, opac, sel, stopElem) {
         var stop = stopElem || mkElem('stop', {
-          'stop-color': color,
+          'stop-color': colr,
           'stop-opacity': opac,
           offset: n
         }, curGradient);
 
         if (stopElem) {
-          color = stopElem.getAttribute('stop-color');
+          colr = stopElem.getAttribute('stop-color');
           opac = stopElem.getAttribute('stop-opacity');
           n = stopElem.getAttribute('offset');
         } else {
@@ -22822,7 +23276,7 @@ function jqPluginJGraduate ($) {
         }, stopGroup);
         var path = mkElem('path', {
           d: pickerD,
-          fill: color,
+          fill: colr,
           'fill-opacity': opac,
           transform: 'translate(' + (10 + n * MAX) + ', 26)',
           stroke: '#000',
@@ -22837,8 +23291,9 @@ function jqPluginJGraduate ($) {
           return false;
         }).data('stop', stop).data('bg', pathbg).dblclick(function () {
           $('div.jGraduate_LightBox').show();
-          var colorhandle = this;
-          var stopOpacity = +stop.getAttribute('stop-opacity') || 1;
+          var colorhandle = this; // eslint-disable-line consistent-this
+
+          var stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;
           var stopColor = stop.getAttribute('stop-color') || 1;
           var thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);
 
@@ -22846,7 +23301,7 @@ function jqPluginJGraduate ($) {
             thisAlpha = '0' + thisAlpha;
           }
 
-          color = stopColor.substr(1) + thisAlpha;
+          colr = stopColor.substr(1) + thisAlpha;
           $('#' + id + '_jGraduate_stopPicker').css({
             left: 100,
             bottom: 15
@@ -22858,12 +23313,12 @@ function jqPluginJGraduate ($) {
               clientPath: $settings.images.clientPath
             },
             color: {
-              active: color,
+              active: colr,
               alphaSupport: true
             }
-          }, function (color, arg2) {
-            stopColor = color.val('hex') ? '#' + color.val('hex') : 'none';
-            stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;
+          }, function (clr, arg2) {
+            stopColor = clr.val('hex') ? '#' + clr.val('hex') : 'none';
+            stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;
             colorhandle.setAttribute('fill', stopColor);
             colorhandle.setAttribute('fill-opacity', stopOpacity);
             stop.setAttribute('stop-color', stopColor);
@@ -22878,8 +23333,8 @@ function jqPluginJGraduate ($) {
         $(curGradient).find('stop').each(function () {
           var curS = $(this);
 
-          if (+this.getAttribute('offset') > n) {
-            if (!color) {
+          if (Number(this.getAttribute('offset')) > n) {
+            if (!colr) {
               var newcolor = this.getAttribute('stop-color');
               var newopac = this.getAttribute('stop-opacity');
               stop.setAttribute('stop-color', newcolor);
@@ -22891,10 +23346,17 @@ function jqPluginJGraduate ($) {
             curS.before(stop);
             return false;
           }
+
+          return true;
         });
         if (sel) selectStop(path);
         return stop;
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function remStop() {
         delStop.setAttribute('display', 'none');
@@ -22914,6 +23376,11 @@ function jqPluginJGraduate ($) {
         display: 'none'
       }, undefined); // stopMakerSVG);
 
+      /**
+      * @param {Element} item
+      * @returns {undefined}
+      */
+
       function selectStop(item) {
         if (curStop) curStop.setAttribute('stroke', '#000');
         item.setAttribute('stroke', 'blue');
@@ -22924,6 +23391,10 @@ function jqPluginJGraduate ($) {
       }
 
       var stopOffset;
+      /**
+      *
+      * @returns {undefined}
+      */
 
       function remDrags() {
         $win.unbind('mousemove', dragColor);
@@ -22940,6 +23411,10 @@ function jqPluginJGraduate ($) {
           angle = 0;
       var cX = cx;
       var cY = cy;
+      /**
+      *
+      * @returns {undefined}
+      */
 
       function xform() {
         var rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';
@@ -22952,6 +23427,11 @@ function jqPluginJGraduate ($) {
           curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')'); // $('#ang').removeClass('dis');
         }
       }
+      /**
+      * @param {Event} evt
+      * @returns {undefined}
+      */
+
 
       function dragColor(evt) {
         var x = evt.pageX - stopOffset.left;
@@ -23039,28 +23519,28 @@ function jqPluginJGraduate ($) {
         var fracx = x / SIZEX;
         var fracy = y / SIZEY;
         var type = draggingCoord.data('coord');
-        var grad = curGradient;
+        var grd = curGradient;
 
         switch (type) {
           case 'start':
             attrInput.x1.val(fracx);
             attrInput.y1.val(fracy);
-            grad.setAttribute('x1', fracx);
-            grad.setAttribute('y1', fracy);
+            grd.setAttribute('x1', fracx);
+            grd.setAttribute('y1', fracy);
             break;
 
           case 'end':
             attrInput.x2.val(fracx);
             attrInput.y2.val(fracy);
-            grad.setAttribute('x2', fracx);
-            grad.setAttribute('y2', fracy);
+            grd.setAttribute('x2', fracx);
+            grd.setAttribute('y2', fracy);
             break;
 
           case 'center':
             attrInput.cx.val(fracx);
             attrInput.cy.val(fracy);
-            grad.setAttribute('cx', fracx);
-            grad.setAttribute('cy', fracy);
+            grd.setAttribute('cx', fracx);
+            grd.setAttribute('cy', fracy);
             cX = fracx;
             cY = fracy;
             xform();
@@ -23069,8 +23549,8 @@ function jqPluginJGraduate ($) {
           case 'focus':
             attrInput.fx.val(fracx);
             attrInput.fy.val(fracy);
-            grad.setAttribute('fx', fracx);
-            grad.setAttribute('fy', fracy);
+            grd.setAttribute('fx', fracx);
+            grd.setAttribute('fy', fracy);
             xform();
         }
 
@@ -23140,22 +23620,20 @@ function jqPluginJGraduate ($) {
         focusCoord.toggle(showFocus);
         attrInput.fx.val('');
         attrInput.fy.val('');
-        var grad = curGradient;
+        var grd = curGradient;
 
         if (!showFocus) {
-          lastfx = grad.getAttribute('fx');
-          lastfy = grad.getAttribute('fy');
-          grad.removeAttribute('fx');
-          grad.removeAttribute('fy');
+          lastfx = grd.getAttribute('fx');
+          lastfy = grd.getAttribute('fy');
+          grd.removeAttribute('fx');
+          grd.removeAttribute('fy');
         } else {
-          var _fx = lastfx || 0.5;
-
-          var _fy = lastfy || 0.5;
-
-          grad.setAttribute('fx', _fx);
-          grad.setAttribute('fy', _fy);
-          attrInput.fx.val(_fx);
-          attrInput.fy.val(_fy);
+          var fX = lastfx || 0.5;
+          var fY = lastfy || 0.5;
+          grd.setAttribute('fx', fX);
+          grd.setAttribute('fy', fY);
+          attrInput.fx.val(fX);
+          attrInput.fy.val(fY);
         }
       });
       stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');
@@ -23174,9 +23652,9 @@ function jqPluginJGraduate ($) {
 
       var setSlider = function setSlider(e) {
         var _slider = slider,
-            offset = _slider.offset;
+            left = _slider.offset.left;
         var div = slider.parent;
-        var x = e.pageX - offset.left - parseInt(div.css('border-left-width'));
+        var x = e.pageX - left - parseInt(div.css('border-left-width'));
         if (x > SLIDERW) x = SLIDERW;
         if (x <= 0) x = 0;
         var posx = x - 5;
@@ -23220,7 +23698,7 @@ function jqPluginJGraduate ($) {
             break;
 
           case 'angle':
-            x = x - 0.5;
+            x -= 0.5;
             angle = x *= 180;
             xform();
             x /= 100;
@@ -23312,7 +23790,7 @@ function jqPluginJGraduate ($) {
         });
         $(data.input).val(data.val).change(function () {
           var isRad = curType === 'radialGradient';
-          var val = +this.value;
+          var val = Number(this.value);
           var xpos = 0;
 
           switch (type) {
@@ -23410,10 +23888,10 @@ function jqPluginJGraduate ($) {
           active: color,
           alphaSupport: true
         }
-      }, function (color) {
+      }, function (clr) {
         $this.paint.type = 'solidColor';
-        $this.paint.alpha = color.val('ahex') ? Math.round(color.val('a') / 255 * 100) : 100;
-        $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';
+        $this.paint.alpha = clr.val('ahex') ? Math.round(clr.val('a') / 255 * 100) : 100;
+        $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';
         $this.paint.radialGradient = null;
         okClicked();
       }, null, function () {
@@ -23447,7 +23925,7 @@ function jqPluginJGraduate ($) {
             curGradient.setAttribute('spreadMethod', sm);
           }
 
-          showFocus = type === 'rg' && curGradient.getAttribute('fx') != null && !(cx === fx && cy === fy);
+          showFocus = type === 'rg' && curGradient.getAttribute('fx') !== null && !(cx === fx && cy === fy);
           $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);
 
           if (showFocus) {
@@ -23563,7 +24041,7 @@ function jqPluginJGraduate ($) {
  * @param {external:jQuery} $ The jQuery object to which to add the plug-in
  * @returns {external:jQuery}
 */
-function jqPluginSpinBtn ($) {
+function jQueryPluginSpinButton($) {
   if (!$.loadingStylesheets) {
     $.loadingStylesheets = [];
   }
@@ -23576,12 +24054,14 @@ function jqPluginSpinBtn ($) {
   /**
   * @callback module:jQuerySpinButton.StepCallback
   * @param {external:jQuery} thisArg Value of `this`
+  * @param {Float} i Value to adjust
+  * @returns {Float}
   */
 
   /**
   * @callback module:jQuerySpinButton.ValueCallback
-  * @param {external:jQuery} thisArg Value of `this`
-  * @param {Float} value Value that was changed
+  * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.
+  * @returns {undefined}
   */
 
   /**
@@ -23589,7 +24069,7 @@ function jqPluginSpinBtn ($) {
    * @property {Float} min Set lower limit
    * @property {Float} max Set upper limit.
    * @property {Float} step Set increment size.
-   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust
+   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.
    * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)
    * @property {Float} smallStep Set shift-click increment size.
    * @property {PlainObject} stateObj Object to allow passing in live-updating scale
@@ -23612,6 +24092,12 @@ function jqPluginSpinBtn ($) {
 
   $.fn.SpinButton = function (cfg) {
     cfg = cfg || {};
+    /**
+     *
+     * @param {Element} el
+     * @param {"offsetLeft"|"offsetTop"} prop
+     * @returns {Integer}
+     */
 
     function coord(el, prop) {
       var b = document.body;
@@ -23870,7 +24356,7 @@ function jqPluginSpinBtn ($) {
  *
 */
 /**
-* @callback module:jQueryContextMenu.jQueryContextMenuCallback
+* @callback module:jQueryContextMenu.jQueryContextMenuListener
 * @param {string} href The `href` value after the first character (for bypassing an initial `#`)
 * @param {external:jQuery} srcElement The wrapped jQuery srcElement
 * @param {{x: Float, y: Float, docX: Float, docY: Float}} coords
@@ -23903,10 +24389,10 @@ function jQueryContextMenu($) {
     /**
     * @memberof external:jQuery.fn
     * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o
-    * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback
+    * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener
     * @returns {external:jQuery}
     */
-    contextMenu: function contextMenu(o, callback) {
+    contextMenu: function contextMenu(o, listener) {
       // Defaults
       if (o.menu === undefined) return false;
       if (o.inSpeed === undefined) o.inSpeed = 150;
@@ -23922,102 +24408,104 @@ function jQueryContextMenu($) {
 
         menu.addClass('contextMenu'); // Simulate a true right click
 
-        $(this).bind('mousedown', function (e) {
-          var evt = e;
+        $(this).bind('mousedown', function (evt) {
           $(this).mouseup(function (e) {
             var srcElement = $(this);
             srcElement.unbind('mouseup');
 
-            if (evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac()) {
-              e.stopPropagation(); // Hide context menus that may be showing
-
-              $('.contextMenu').hide(); // Get this context menu
-
-              if (el.hasClass('disabled')) return false; // Detect mouse position
-
-              var x = e.pageX,
-                  y = e.pageY;
-              var xOff = win.width() - menu.width(),
-                  yOff = win.height() - menu.height();
-              if (x > xOff - 15) x = xOff - 15;
-              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
-              // Show the menu
-
-              doc.unbind('click');
-              menu.css({
-                top: y,
-                left: x
-              }).fadeIn(o.inSpeed); // Hover events
-
-              menu.find('A').mouseover(function () {
-                menu.find('LI.hover').removeClass('hover');
-                $(this).parent().addClass('hover');
-              }).mouseout(function () {
-                menu.find('LI.hover').removeClass('hover');
-              }); // Keyboard
-
-              doc.keypress(function (e) {
-                switch (e.keyCode) {
-                  case 38:
-                    // up
-                    if (!menu.find('LI.hover').length) {
-                      menu.find('LI:last').addClass('hover');
-                    } else {
-                      menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
-                      if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
-                    }
-
-                    break;
-
-                  case 40:
-                    // down
-                    if (!menu.find('LI.hover').length) {
-                      menu.find('LI:first').addClass('hover');
-                    } else {
-                      menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
-                      if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
-                    }
-
-                    break;
-
-                  case 13:
-                    // enter
-                    menu.find('LI.hover A').trigger('click');
-                    break;
-
-                  case 27:
-                    // esc
-                    doc.trigger('click');
-                    break;
-                }
-              }); // When items are selected
-
-              menu.find('A').unbind('mouseup');
-              menu.find('LI:not(.disabled) A').mouseup(function () {
-                doc.unbind('click').unbind('keypress');
-                $('.contextMenu').hide(); // Callback
-
-                if (callback) {
-                  callback($(this).attr('href').substr(1), $(srcElement), {
-                    x: x - offset.left,
-                    y: y - offset.top,
-                    docX: x,
-                    docY: y
-                  });
-                }
-
-                return false;
-              }); // Hide bindings
-
-              setTimeout(function () {
-                // Delay for Mozilla
-                doc.click(function () {
-                  doc.unbind('click').unbind('keypress');
-                  menu.fadeOut(o.outSpeed);
-                  return false;
-                });
-              }, 0);
+            if (!(evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac())) {
+              return undefined;
             }
+
+            e.stopPropagation(); // Hide context menus that may be showing
+
+            $('.contextMenu').hide(); // Get this context menu
+
+            if (el.hasClass('disabled')) return false; // Detect mouse position
+
+            var x = e.pageX,
+                y = e.pageY;
+            var xOff = win.width() - menu.width(),
+                yOff = win.height() - menu.height();
+            if (x > xOff - 15) x = xOff - 15;
+            if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
+            // Show the menu
+
+            doc.unbind('click');
+            menu.css({
+              top: y,
+              left: x
+            }).fadeIn(o.inSpeed); // Hover events
+
+            menu.find('A').mouseover(function () {
+              menu.find('LI.hover').removeClass('hover');
+              $(this).parent().addClass('hover');
+            }).mouseout(function () {
+              menu.find('LI.hover').removeClass('hover');
+            }); // Keyboard
+
+            doc.keypress(function (ev) {
+              switch (ev.keyCode) {
+                case 38:
+                  // up
+                  if (!menu.find('LI.hover').length) {
+                    menu.find('LI:last').addClass('hover');
+                  } else {
+                    menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
+                    if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
+                  }
+
+                  break;
+
+                case 40:
+                  // down
+                  if (!menu.find('LI.hover').length) {
+                    menu.find('LI:first').addClass('hover');
+                  } else {
+                    menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
+                    if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
+                  }
+
+                  break;
+
+                case 13:
+                  // enter
+                  menu.find('LI.hover A').trigger('click');
+                  break;
+
+                case 27:
+                  // esc
+                  doc.trigger('click');
+                  break;
+              }
+            }); // When items are selected
+
+            menu.find('A').unbind('mouseup');
+            menu.find('LI:not(.disabled) A').mouseup(function () {
+              doc.unbind('click').unbind('keypress');
+              $('.contextMenu').hide();
+
+              if (listener) {
+                listener($(this).attr('href').substr(1), $(srcElement), {
+                  x: x - offset.left,
+                  y: y - offset.top,
+                  docX: x,
+                  docY: y
+                });
+              }
+
+              return false;
+            }); // Hide bindings
+
+            setTimeout(function () {
+              // Delay for Mozilla
+              doc.click(function () {
+                doc.unbind('click').unbind('keypress');
+                menu.fadeOut(o.outSpeed);
+                return false;
+              });
+            }, 0);
+            return undefined;
           });
         }); // Disable text selection
 
@@ -24171,6 +24659,16 @@ function toFixedNumeric(value, precision) {
   if (precision === undefined) precision = 0;
   return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);
 }
+/**
+ * Whether a value is `null` or `undefined`.
+ * @param {Any} val
+ * @returns {boolean}
+ */
+
+
+var isNullish$1 = function isNullish(val) {
+  return val === null || val === undefined;
+};
 /**
 * @function module:jPicker.jPicker
 * @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})
@@ -24207,6 +24705,7 @@ var jPicker = function jPicker($) {
   /**
   * Encapsulate slider functionality for the ColorMap and ColorBar -
   * could be useful to use a jQuery UI draggable for this with certain extensions.
+  * @memberof module:jPicker
   * @param {external:jQuery} bar
   * @param {module:jPicker.SliderOptions} options
   * @returns {undefined}
@@ -24216,13 +24715,23 @@ var jPicker = function jPicker($) {
   var Slider = function Slider(bar, options) {
     _classCallCheck(this, Slider);
 
-    var $this = this;
+    var that = this;
+    /**
+     * Fire events on the supplied `context`
+     * @param {module:jPicker.JPickerInit} context
+     * @returns {undefined}
+     */
 
     function fireChangeEvents(context) {
-      for (var i = 0; i < changeEvents.length; i++) {
-        changeEvents[i].call($this, $this, context);
-      }
-    } // bind the mousedown to the bar not the arrow for quick snapping to the clicked location
+      changeEvents.forEach(function (changeEvent) {
+        changeEvent.call(that, that, context);
+      });
+    }
+    /**
+     * Bind the mousedown to the bar not the arrow for quick snapping to the clicked location.
+     * @param {external:jQuery.Event} e
+     * @returns {undefined}
+     */
 
 
     function mouseDown(e) {
@@ -24230,27 +24739,38 @@ var jPicker = function jPicker($) {
       offset = {
         l: off.left | 0,
         t: off.top | 0
-      };
+      }; // eslint-disable-line no-bitwise
+
       clearTimeout(timeout); // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run
 
       timeout = setTimeout(function () {
-        setValuesFromMousePosition.call($this, e);
+        setValuesFromMousePosition.call(that, e);
       }, 0); // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing
 
       $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);
       e.preventDefault(); // don't try to select anything or drag the image to the desktop
-    } // set the values as the mouse moves
+    }
+    /**
+     * Set the values as the mouse moves.
+     * @param {external:jQuery.Event} e
+     * @returns {false}
+     */
 
 
     function mouseMove(e) {
       clearTimeout(timeout);
       timeout = setTimeout(function () {
-        setValuesFromMousePosition.call($this, e);
+        setValuesFromMousePosition.call(that, e);
       }, 0);
       e.stopPropagation();
       e.preventDefault();
       return false;
-    } // unbind the document events - they aren't needed when not dragging
+    }
+    /**
+     * Unbind the document events - they aren't needed when not dragging.
+     * @param {external:jQuery.Event} e
+     * @returns {false}
+     */
 
 
     function mouseUp(e) {
@@ -24258,7 +24778,12 @@ var jPicker = function jPicker($) {
       e.stopPropagation();
       e.preventDefault();
       return false;
-    } // calculate mouse position and set value within the current range
+    }
+    /**
+     * Calculate mouse position and set value within the current range.
+     * @param {Event} e
+     * @returns {undefined}
+     */
 
 
     function setValuesFromMousePosition(e) {
@@ -24270,11 +24795,16 @@ var jPicker = function jPicker($) {
 
       if (locX < 0) locX = 0;else if (locX > barW) locX = barW;
       if (locY < 0) locY = 0;else if (locY > barH) locY = barH;
-      val.call($this, 'xy', {
+      val.call(that, 'xy', {
         x: locX / barW * rangeX + minX,
         y: locY / barH * rangeY + minY
       });
     }
+    /**
+     *
+     * @returns {undefined}
+     */
+
 
     function draw() {
       var barW = bar.w,
@@ -24284,6 +24814,7 @@ var jPicker = function jPicker($) {
       var arrowOffsetX = 0,
           arrowOffsetY = 0;
       setTimeout(function () {
+        /* eslint-disable no-bitwise */
         if (rangeX > 0) {
           // range is greater than zero
           // constrain to bounds
@@ -24306,14 +24837,23 @@ var jPicker = function jPicker($) {
           left: arrowOffsetX + 'px',
           top: arrowOffsetY + 'px'
         });
-      }, 0);
+        /* eslint no-bitwise: ["error"] */
+      });
     }
+    /**
+     * Get or set a value.
+     * @param {?("xy"|"x"|"y")} name
+     * @param {module:math.XYObject} value
+     * @param {module:jPicker.Slider} context
+     * @returns {module:math.XYObject|Float|undefined}
+     */
+
 
     function val(name, value, context) {
       var set = value !== undefined;
 
       if (!set) {
-        if (name === undefined || name == null) name = 'xy';
+        if (isNullish$1(name)) name = 'xy';
 
         switch (name.toLowerCase()) {
           case 'x':
@@ -24331,10 +24871,10 @@ var jPicker = function jPicker($) {
         }
       }
 
-      if (context != null && context === $this) return;
+      if (!isNullish$1(context) && context === that) return undefined;
       var changed = false;
       var newX, newY;
-      if (name == null) name = 'xy';
+      if (isNullish$1(name)) name = 'xy';
 
       switch (name.toLowerCase()) {
         case 'x':
@@ -24352,7 +24892,7 @@ var jPicker = function jPicker($) {
           break;
       }
 
-      if (newX != null) {
+      if (!isNullish$1(newX)) {
         if (newX < minX) newX = minX;else if (newX > maxX) newX = maxX;
 
         if (x !== newX) {
@@ -24361,7 +24901,7 @@ var jPicker = function jPicker($) {
         }
       }
 
-      if (newY != null) {
+      if (!isNullish$1(newY)) {
         if (newY < minY) newY = minY;else if (newY > maxY) newY = maxY;
 
         if (y !== newY) {
@@ -24370,14 +24910,40 @@ var jPicker = function jPicker($) {
         }
       }
 
-      changed && fireChangeEvents.call($this, context || $this);
+      changed && fireChangeEvents.call(that, context || that);
+      return undefined;
     }
+    /**
+    * @typedef {PlainObject} module:jPicker.MinMaxRangeX
+    * @property {Float} minX
+    * @property {Float} maxX
+    * @property {Float} rangeX
+    */
+
+    /**
+    * @typedef {PlainObject} module:jPicker.MinMaxRangeY
+    * @property {Float} minY
+    * @property {Float} maxY
+    * @property {Float} rangeY
+    */
+
+    /**
+    * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY
+    */
+
+    /**
+     *
+     * @param {"minx"|"maxx"|"rangex"|"miny"|"maxy"|"rangey"|"all"} name
+     * @param {module:jPicker.MinMaxRangeXY} value
+     * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}
+     */
+
 
     function range(name, value) {
       var set = value !== undefined;
 
       if (!set) {
-        if (name === undefined || name == null) name = 'all';
+        if (isNullish$1(name)) name = 'all';
 
         switch (name.toLowerCase()) {
           case 'minx':
@@ -24421,7 +24987,8 @@ var jPicker = function jPicker($) {
 
       var // changed = false,
       newMinX, newMaxX, newMinY, newMaxY;
-      if (name == null) name = 'all';
+      if (isNullish$1(name)) name = 'all';
+      /* eslint-disable no-bitwise */
 
       switch (name.toLowerCase()) {
         case 'minx':
@@ -24458,33 +25025,49 @@ var jPicker = function jPicker($) {
           newMaxY = value && value.maxY && value.maxY | 0 || 0;
           break;
       }
+      /* eslint no-bitwise: ["error"] */
 
-      if (newMinX != null && minX !== newMinX) {
+
+      if (!isNullish$1(newMinX) && minX !== newMinX) {
         minX = newMinX;
         rangeX = maxX - minX;
       }
 
-      if (newMaxX != null && maxX !== newMaxX) {
+      if (!isNullish$1(newMaxX) && maxX !== newMaxX) {
         maxX = newMaxX;
         rangeX = maxX - minX;
       }
 
-      if (newMinY != null && minY !== newMinY) {
+      if (!isNullish$1(newMinY) && minY !== newMinY) {
         minY = newMinY;
         rangeY = maxY - minY;
       }
 
-      if (newMaxY != null && maxY !== newMaxY) {
+      if (!isNullish$1(newMaxY) && maxY !== newMaxY) {
         maxY = newMaxY;
         rangeY = maxY - minY;
       }
+
+      return undefined;
     }
+    /**
+    * @param {GenericCallback} callback
+    * @returns {undefined}
+    */
+
 
     function bind(callback) {
+      // eslint-disable-line promise/prefer-await-to-callbacks
       if (typeof callback === 'function') changeEvents.push(callback);
     }
+    /**
+    * @param {GenericCallback} callback
+    * @returns {undefined}
+    */
+
 
     function unbind(callback) {
+      // eslint-disable-line promise/prefer-await-to-callbacks
       if (typeof callback !== 'function') return;
       var i;
 
@@ -24492,6 +25075,11 @@ var jPicker = function jPicker($) {
         changeEvents.splice(i, 1);
       }
     }
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     function destroy() {
       // unbind all possible events and null objects
@@ -24515,8 +25103,9 @@ var jPicker = function jPicker($) {
         arrow = bar.find('img:first'),
         // the arrow image to drag
     changeEvents = [];
-    $.extend(true, $this, // public properties, methods, and event bindings - these we need to access from other controls
-    {
+    $.extend(true, // public properties, methods, and event bindings - these we need
+    //   to access from other controls
+    that, {
       val: val,
       range: range,
       bind: bind,
@@ -24531,29 +25120,45 @@ var jPicker = function jPicker($) {
     bar.h = options.map && options.map.height || bar.height(); // bind mousedown event
 
     bar.bind('mousedown', mouseDown);
-    bind.call($this, draw);
-  }; // controls for all the input elements for the typing in color values
+    bind.call(that, draw);
+  };
+  /**
+   * Controls for all the input elements for the typing in color values.
+   * @param {external:jQuery} picker
+   * @param {external:jQuery.jPicker.Color} color
+   * @param {external:jQuery.fn.$.fn.jPicker} bindedHex
+   * @param {Float} alphaPrecision
+   * @constructor
+   */
 
 
-  function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
-    var $this = this; // private properties and methods
+  var ColorValuePicker = function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
+    _classCallCheck(this, ColorValuePicker);
+
+    var that = this; // private properties and methods
 
     var inputs = picker.find('td.Text input'); // input box key down - use arrows to alter color
 
+    /**
+     *
+     * @param {Event} e
+     * @returns {Event|false|undefined}
+     */
+
     function keyDown(e) {
-      if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+      if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
       if (!validateKey(e)) return e;
 
       switch (e.target) {
         case red.get(0):
           switch (e.keyCode) {
             case 38:
-              red.val(setValueInRange.call($this, (red.val() << 0) + 1, 0, 255));
+              red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));
               color.val('r', red.val(), e.target);
               return false;
 
             case 40:
-              red.val(setValueInRange.call($this, (red.val() << 0) - 1, 0, 255));
+              red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));
               color.val('r', red.val(), e.target);
               return false;
           }
@@ -24563,12 +25168,12 @@ var jPicker = function jPicker($) {
         case green.get(0):
           switch (e.keyCode) {
             case 38:
-              green.val(setValueInRange.call($this, (green.val() << 0) + 1, 0, 255));
+              green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));
               color.val('g', green.val(), e.target);
               return false;
 
             case 40:
-              green.val(setValueInRange.call($this, (green.val() << 0) - 1, 0, 255));
+              green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));
               color.val('g', green.val(), e.target);
               return false;
           }
@@ -24578,12 +25183,12 @@ var jPicker = function jPicker($) {
         case blue.get(0):
           switch (e.keyCode) {
             case 38:
-              blue.val(setValueInRange.call($this, (blue.val() << 0) + 1, 0, 255));
+              blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));
               color.val('b', blue.val(), e.target);
               return false;
 
             case 40:
-              blue.val(setValueInRange.call($this, (blue.val() << 0) - 1, 0, 255));
+              blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));
               color.val('b', blue.val(), e.target);
               return false;
           }
@@ -24593,12 +25198,12 @@ var jPicker = function jPicker($) {
         case alpha && alpha.get(0):
           switch (e.keyCode) {
             case 38:
-              alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) + 1, 0, 100));
+              alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));
               color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
               return false;
 
             case 40:
-              alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) - 1, 0, 100));
+              alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));
               color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
               return false;
           }
@@ -24608,12 +25213,12 @@ var jPicker = function jPicker($) {
         case hue.get(0):
           switch (e.keyCode) {
             case 38:
-              hue.val(setValueInRange.call($this, (hue.val() << 0) + 1, 0, 360));
+              hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));
               color.val('h', hue.val(), e.target);
               return false;
 
             case 40:
-              hue.val(setValueInRange.call($this, (hue.val() << 0) - 1, 0, 360));
+              hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));
               color.val('h', hue.val(), e.target);
               return false;
           }
@@ -24623,12 +25228,12 @@ var jPicker = function jPicker($) {
         case saturation.get(0):
           switch (e.keyCode) {
             case 38:
-              saturation.val(setValueInRange.call($this, (saturation.val() << 0) + 1, 0, 100));
+              saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));
               color.val('s', saturation.val(), e.target);
               return false;
 
             case 40:
-              saturation.val(setValueInRange.call($this, (saturation.val() << 0) - 1, 0, 100));
+              saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));
               color.val('s', saturation.val(), e.target);
               return false;
           }
@@ -24638,58 +25243,66 @@ var jPicker = function jPicker($) {
         case value.get(0):
           switch (e.keyCode) {
             case 38:
-              value.val(setValueInRange.call($this, (value.val() << 0) + 1, 0, 100));
+              value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));
               color.val('v', value.val(), e.target);
               return false;
 
             case 40:
-              value.val(setValueInRange.call($this, (value.val() << 0) - 1, 0, 100));
+              value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));
               color.val('v', value.val(), e.target);
               return false;
           }
 
           break;
       }
+
+      return undefined;
     } // input box key up - validate value and set color
 
+    /**
+    * @param {Event} e
+    * @returns {Event|undefined}
+    * @todo Why is this returning an event?
+    */
+
 
     function keyUp(e) {
-      if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+      if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
       if (!validateKey(e)) return e;
 
       switch (e.target) {
         case red.get(0):
-          red.val(setValueInRange.call($this, red.val(), 0, 255));
+          red.val(setValueInRange.call(that, red.val(), 0, 255));
           color.val('r', red.val(), e.target);
           break;
 
         case green.get(0):
-          green.val(setValueInRange.call($this, green.val(), 0, 255));
+          green.val(setValueInRange.call(that, green.val(), 0, 255));
           color.val('g', green.val(), e.target);
           break;
 
         case blue.get(0):
-          blue.val(setValueInRange.call($this, blue.val(), 0, 255));
+          blue.val(setValueInRange.call(that, blue.val(), 0, 255));
           color.val('b', blue.val(), e.target);
           break;
 
         case alpha && alpha.get(0):
-          alpha.val(setValueInRange.call($this, alpha.val(), 0, 100));
+          alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));
           color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
           break;
 
         case hue.get(0):
-          hue.val(setValueInRange.call($this, hue.val(), 0, 360));
+          hue.val(setValueInRange.call(that, hue.val(), 0, 360));
           color.val('h', hue.val(), e.target);
           break;
 
         case saturation.get(0):
-          saturation.val(setValueInRange.call($this, saturation.val(), 0, 100));
+          saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));
           color.val('s', saturation.val(), e.target);
           break;
 
         case value.get(0):
-          value.val(setValueInRange.call($this, value.val(), 0, 100));
+          value.val(setValueInRange.call(that, value.val(), 0, 100));
           color.val('v', value.val(), e.target);
           break;
 
@@ -24707,14 +25320,21 @@ var jPicker = function jPicker($) {
 
         case ahex && ahex.get(0):
           ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));
-          color.val('a', ahex.val() != null ? parseInt(ahex.val(), 16) : null, e.target);
+          color.val('a', !isNullish$1(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);
           break;
       }
+
+      return undefined;
     } // input box blur - reset to original if value empty
 
+    /**
+    * @param {Event} e
+    * @returns {undefined}
+    */
+
 
     function blur(e) {
-      if (color.val() != null) {
+      if (!isNullish$1(color.val())) {
         switch (e.target) {
           case red.get(0):
             red.val(color.val('r'));
@@ -24756,6 +25376,11 @@ var jPicker = function jPicker($) {
         }
       }
     }
+    /**
+    * @param {Event} e
+    * @returns {boolean}
+    */
+
 
     function validateKey(e) {
       switch (e.keyCode) {
@@ -24772,7 +25397,14 @@ var jPicker = function jPicker($) {
       }
 
       return true;
-    } // constrain value within range
+    }
+    /**
+    * Constrain value within range.
+    * @param {Float|string} value
+    * @param {Float} min
+    * @param {Float} max
+    * @returns {Float|string} Returns a number or numeric string
+    */
 
 
     function setValueInRange(value, min, max) {
@@ -24781,23 +25413,33 @@ var jPicker = function jPicker($) {
       if (value < min) return min;
       return value;
     }
+    /**
+    * @param {external:jQuery} ui
+    * @param {Element} context
+    * @returns {undefined}
+    */
+
 
     function colorChanged(ui, context) {
       var all = ui.val('all');
-      if (context !== red.get(0)) red.val(all != null ? all.r : '');
-      if (context !== green.get(0)) green.val(all != null ? all.g : '');
-      if (context !== blue.get(0)) blue.val(all != null ? all.b : '');
-      if (alpha && context !== alpha.get(0)) alpha.val(all != null ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
-      if (context !== hue.get(0)) hue.val(all != null ? all.h : '');
-      if (context !== saturation.get(0)) saturation.val(all != null ? all.s : '');
-      if (context !== value.get(0)) value.val(all != null ? all.v : '');
-      if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(all != null ? all.hex : '');
-      if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(all != null ? all.hex : '');
-      if (ahex && context !== ahex.get(0)) ahex.val(all != null ? all.ahex.substring(6) : '');
+      if (context !== red.get(0)) red.val(!isNullish$1(all) ? all.r : '');
+      if (context !== green.get(0)) green.val(!isNullish$1(all) ? all.g : '');
+      if (context !== blue.get(0)) blue.val(!isNullish$1(all) ? all.b : '');
+      if (alpha && context !== alpha.get(0)) alpha.val(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
+      if (context !== hue.get(0)) hue.val(!isNullish$1(all) ? all.h : '');
+      if (context !== saturation.get(0)) saturation.val(!isNullish$1(all) ? all.s : '');
+      if (context !== value.get(0)) value.val(!isNullish$1(all) ? all.v : '');
+      if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(!isNullish$1(all) ? all.hex : '');
+      if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish$1(all) ? all.hex : '');
+      if (ahex && context !== ahex.get(0)) ahex.val(!isNullish$1(all) ? all.ahex.substring(6) : '');
     }
+    /**
+    * Unbind all events and null objects.
+    * @returns {undefined}
+    */
+
 
     function destroy() {
-      // unbind all events and null objects
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);
       color.unbind(colorChanged);
@@ -24821,25 +25463,25 @@ var jPicker = function jPicker($) {
         value = inputs.eq(2),
         hex = inputs.eq(inputs.length > 7 ? 7 : 6),
         ahex = inputs.length > 7 ? inputs.eq(8) : null;
-    $.extend(true, $this, {
+    $.extend(true, that, {
       // public properties and methods
       destroy: destroy
     });
     red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);
     red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);
     color.bind(colorChanged);
-  }
+  };
   /**
   * @typedef {PlainObject} module:jPicker.JPickerInit
-  * @property {Integer} a
-  * @property {Integer} b
-  * @property {Integer} g
-  * @property {Integer} h
-  * @property {Integer} r
-  * @property {Integer} s
-  * @property {Integer} v
-  * @property {string} hex
-  * @property {string} ahex
+  * @property {Integer} [a]
+  * @property {Integer} [b]
+  * @property {Integer} [g]
+  * @property {Integer} [h]
+  * @property {Integer} [r]
+  * @property {Integer} [s]
+  * @property {Integer} [v]
+  * @property {string} [hex]
+  * @property {string} [ahex]
   */
 
   /**
@@ -24869,13 +25511,26 @@ var jPicker = function jPicker($) {
     * @param {module:jPicker.JPickerInit} init
     */
     Color: function Color(init) {
-      var $this = this;
+      // eslint-disable-line object-shorthand
+      var that = this;
+      /**
+       *
+       * @param {module:jPicker.Slider} context
+       * @returns {undefined}
+       */
 
       function fireChangeEvents(context) {
         for (var i = 0; i < changeEvents.length; i++) {
-          changeEvents[i].call($this, $this, context);
+          changeEvents[i].call(that, that, context);
         }
       }
+      /**
+       * @param {string|"ahex"|"hex"|"all"|""|null|undefined} name String composed of letters "r", "g", "b", "a", "h", "s", and/or "v"
+       * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]
+       * @param {external:jQuery.jPicker.Color} context
+       * @returns {module:jPicker.JPickerInit|string|null|undefined}
+       */
+
 
       function val(name, value, context) {
         // Kind of ugly
@@ -24883,8 +25538,9 @@ var jPicker = function jPicker($) {
         if (set && value.ahex === '') value.ahex = '00000000';
 
         if (!set) {
-          if (name === undefined || name == null || name === '') name = 'all';
-          if (r == null) return null;
+          var ret;
+          if (isNullish$1(name) || name === '') name = 'all';
+          if (isNullish$1(r)) return null;
 
           switch (name.toLowerCase()) {
             case 'ahex':
@@ -24907,261 +25563,281 @@ var jPicker = function jPicker($) {
                 h: h,
                 s: s,
                 v: v,
-                hex: val.call($this, 'hex'),
-                ahex: val.call($this, 'ahex')
+                hex: val.call(that, 'hex'),
+                ahex: val.call(that, 'ahex')
               };
 
             default:
-              var ret = {};
-              var nameLength = name.length;
+              {
+                ret = {};
+                var nameLength = name.length;
 
-              for (var i = 0; i < nameLength; i++) {
-                switch (name.charAt(i)) {
-                  case 'r':
-                    if (nameLength === 1) ret = r;else ret.r = r;
-                    break;
+                _toConsumableArray(name).forEach(function (ch) {
+                  switch (ch) {
+                    case 'r':
+                      if (nameLength === 1) ret = r;else ret.r = r;
+                      break;
 
-                  case 'g':
-                    if (nameLength === 1) ret = g;else ret.g = g;
-                    break;
+                    case 'g':
+                      if (nameLength === 1) ret = g;else ret.g = g;
+                      break;
 
-                  case 'b':
-                    if (nameLength === 1) ret = b;else ret.b = b;
-                    break;
+                    case 'b':
+                      if (nameLength === 1) ret = b;else ret.b = b;
+                      break;
 
-                  case 'a':
-                    if (nameLength === 1) ret = a;else ret.a = a;
-                    break;
+                    case 'a':
+                      if (nameLength === 1) ret = a;else ret.a = a;
+                      break;
 
-                  case 'h':
-                    if (nameLength === 1) ret = h;else ret.h = h;
-                    break;
+                    case 'h':
+                      if (nameLength === 1) ret = h;else ret.h = h;
+                      break;
 
-                  case 's':
-                    if (nameLength === 1) ret = s;else ret.s = s;
-                    break;
+                    case 's':
+                      if (nameLength === 1) ret = s;else ret.s = s;
+                      break;
 
-                  case 'v':
-                    if (nameLength === 1) ret = v;else ret.v = v;
-                    break;
-                }
+                    case 'v':
+                      if (nameLength === 1) ret = v;else ret.v = v;
+                      break;
+                  }
+                });
               }
-
-              return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call($this, 'all') : ret;
           }
+
+          return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call(that, 'all') : ret;
         }
 
-        if (context != null && context === $this) return;
-        if (name == null) name = '';
+        if (!isNullish$1(context) && context === that) return undefined;
+        if (isNullish$1(name)) name = '';
         var changed = false;
 
-        if (value == null) {
-          if (r != null) {
+        if (isNullish$1(value)) {
+          if (!isNullish$1(r)) {
             r = null;
             changed = true;
           }
 
-          if (g != null) {
+          if (!isNullish$1(g)) {
             g = null;
             changed = true;
           }
 
-          if (b != null) {
+          if (!isNullish$1(b)) {
             b = null;
             changed = true;
           }
 
-          if (a != null) {
+          if (!isNullish$1(a)) {
             a = null;
             changed = true;
           }
 
-          if (h != null) {
+          if (!isNullish$1(h)) {
             h = null;
             changed = true;
           }
 
-          if (s != null) {
+          if (!isNullish$1(s)) {
             s = null;
             changed = true;
           }
 
-          if (v != null) {
+          if (!isNullish$1(v)) {
             v = null;
             changed = true;
           }
 
-          changed && fireChangeEvents.call($this, context || $this);
-          return;
+          changed && fireChangeEvents.call(that, context || that);
+          return undefined;
         }
 
         switch (name.toLowerCase()) {
           case 'ahex':
           case 'hex':
-            var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
+            {
+              var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
 
-            val.call($this, 'rgba', {
-              r: _ret.r,
-              g: _ret.g,
-              b: _ret.b,
-              a: name === 'ahex' ? _ret.a : a != null ? a : 255
-            }, context);
-            break;
+              val.call(that, 'rgba', {
+                r: _ret.r,
+                g: _ret.g,
+                b: _ret.b,
+                a: name === 'ahex' ? _ret.a : !isNullish$1(a) ? a : 255
+              }, context);
+              break;
+            }
 
           default:
-            if (value && (value.ahex != null || value.hex != null)) {
-              val.call($this, 'ahex', value.ahex || value.hex || '00000000', context);
-              return;
-            }
-
-            var newV = {};
-            var rgb = false,
-                hsv = false;
-            if (value.r !== undefined && !name.includes('r')) name += 'r';
-            if (value.g !== undefined && !name.includes('g')) name += 'g';
-            if (value.b !== undefined && !name.includes('b')) name += 'b';
-            if (value.a !== undefined && !name.includes('a')) name += 'a';
-            if (value.h !== undefined && !name.includes('h')) name += 'h';
-            if (value.s !== undefined && !name.includes('s')) name += 's';
-            if (value.v !== undefined && !name.includes('v')) name += 'v';
-
-            for (var _i = 0; _i < name.length; _i++) {
-              switch (name.charAt(_i)) {
-                case 'r':
-                  if (hsv) continue;
-                  rgb = true;
-                  newV.r = value.r && value.r | 0 || value | 0 || 0;
-                  if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
-
-                  if (r !== newV.r) {
-                    r = newV.r;
-                    changed = true;
-                  }
-
-                  break;
-
-                case 'g':
-                  if (hsv) continue;
-                  rgb = true;
-                  newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
-                  if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
-
-                  if (g !== newV.g) {
-                    g = newV.g;
-                    changed = true;
-                  }
-
-                  break;
-
-                case 'b':
-                  if (hsv) continue;
-                  rgb = true;
-                  newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
-                  if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
-
-                  if (b !== newV.b) {
-                    b = newV.b;
-                    changed = true;
-                  }
-
-                  break;
-
-                case 'a':
-                  newV.a = value && value.a != null ? value.a | 0 : value | 0;
-                  if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
-
-                  if (a !== newV.a) {
-                    a = newV.a;
-                    changed = true;
-                  }
-
-                  break;
-
-                case 'h':
-                  if (rgb) continue;
-                  hsv = true;
-                  newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
-                  if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
-
-                  if (h !== newV.h) {
-                    h = newV.h;
-                    changed = true;
-                  }
-
-                  break;
-
-                case 's':
-                  if (rgb) continue;
-                  hsv = true;
-                  newV.s = value.s != null ? value.s | 0 : value | 0;
-                  if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
-
-                  if (s !== newV.s) {
-                    s = newV.s;
-                    changed = true;
-                  }
-
-                  break;
-
-                case 'v':
-                  if (rgb) continue;
-                  hsv = true;
-                  newV.v = value.v != null ? value.v | 0 : value | 0;
-                  if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
-
-                  if (v !== newV.v) {
-                    v = newV.v;
-                    changed = true;
-                  }
-
-                  break;
-              }
-            }
-
-            if (changed) {
-              if (rgb) {
-                r = r || 0;
-                g = g || 0;
-                b = b || 0;
-
-                var _ret2 = ColorMethods.rgbToHsv({
-                  r: r,
-                  g: g,
-                  b: b
-                });
-
-                h = _ret2.h;
-                s = _ret2.s;
-                v = _ret2.v;
-              } else if (hsv) {
-                h = h || 0;
-                s = s != null ? s : 100;
-                v = v != null ? v : 100;
-
-                var _ret3 = ColorMethods.hsvToRgb({
-                  h: h,
-                  s: s,
-                  v: v
-                });
-
-                r = _ret3.r;
-                g = _ret3.g;
-                b = _ret3.b;
+            {
+              if (value && (!isNullish$1(value.ahex) || !isNullish$1(value.hex))) {
+                val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);
+                return undefined;
               }
 
-              a = a != null ? a : 255;
-              fireChangeEvents.call($this, context || $this);
-            }
+              var newV = {};
+              var rgb = false,
+                  hsv = false;
+              if (value.r !== undefined && !name.includes('r')) name += 'r';
+              if (value.g !== undefined && !name.includes('g')) name += 'g';
+              if (value.b !== undefined && !name.includes('b')) name += 'b';
+              if (value.a !== undefined && !name.includes('a')) name += 'a';
+              if (value.h !== undefined && !name.includes('h')) name += 'h';
+              if (value.s !== undefined && !name.includes('s')) name += 's';
+              if (value.v !== undefined && !name.includes('v')) name += 'v';
 
-            break;
+              _toConsumableArray(name).forEach(function (ch) {
+                switch (ch) {
+                  case 'r':
+                    if (hsv) return;
+                    rgb = true;
+                    newV.r = value.r && value.r | 0 || value | 0 || 0;
+                    if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
+
+                    if (r !== newV.r) {
+                      r = newV.r;
+                      changed = true;
+                    }
+
+                    break;
+
+                  case 'g':
+                    if (hsv) return;
+                    rgb = true;
+                    newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
+                    if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
+
+                    if (g !== newV.g) {
+                      g = newV.g;
+                      changed = true;
+                    }
+
+                    break;
+
+                  case 'b':
+                    if (hsv) return;
+                    rgb = true;
+                    newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
+                    if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
+
+                    if (b !== newV.b) {
+                      b = newV.b;
+                      changed = true;
+                    }
+
+                    break;
+
+                  case 'a':
+                    newV.a = value && !isNullish$1(value.a) ? value.a | 0 : value | 0;
+                    if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
+
+                    if (a !== newV.a) {
+                      a = newV.a;
+                      changed = true;
+                    }
+
+                    break;
+
+                  case 'h':
+                    if (rgb) return;
+                    hsv = true;
+                    newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
+                    if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
+
+                    if (h !== newV.h) {
+                      h = newV.h;
+                      changed = true;
+                    }
+
+                    break;
+
+                  case 's':
+                    if (rgb) return;
+                    hsv = true;
+                    newV.s = !isNullish$1(value.s) ? value.s | 0 : value | 0;
+                    if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
+
+                    if (s !== newV.s) {
+                      s = newV.s;
+                      changed = true;
+                    }
+
+                    break;
+
+                  case 'v':
+                    if (rgb) return;
+                    hsv = true;
+                    newV.v = !isNullish$1(value.v) ? value.v | 0 : value | 0;
+                    if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
+
+                    if (v !== newV.v) {
+                      v = newV.v;
+                      changed = true;
+                    }
+
+                    break;
+                }
+              });
+
+              if (changed) {
+                if (rgb) {
+                  r = r || 0;
+                  g = g || 0;
+                  b = b || 0;
+
+                  var _ret2 = ColorMethods.rgbToHsv({
+                    r: r,
+                    g: g,
+                    b: b
+                  });
+
+                  h = _ret2.h;
+                  s = _ret2.s;
+                  v = _ret2.v;
+                } else if (hsv) {
+                  h = h || 0;
+                  s = !isNullish$1(s) ? s : 100;
+                  v = !isNullish$1(v) ? v : 100;
+
+                  var _ret3 = ColorMethods.hsvToRgb({
+                    h: h,
+                    s: s,
+                    v: v
+                  });
+
+                  r = _ret3.r;
+                  g = _ret3.g;
+                  b = _ret3.b;
+                }
+
+                a = !isNullish$1(a) ? a : 255;
+                fireChangeEvents.call(that, context || that);
+              }
+
+              break;
+            }
         }
+
+        return undefined;
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function bind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback === 'function') changeEvents.push(callback);
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function unbind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback !== 'function') return;
         var i;
 
@@ -25169,6 +25845,11 @@ var jPicker = function jPicker($) {
           changeEvents.splice(i, 1);
         }
       }
+      /**
+      * Unset `changeEvents`
+      * @returns {undefined}
+      */
+
 
       function destroy() {
         changeEvents = null;
@@ -25182,7 +25863,7 @@ var jPicker = function jPicker($) {
           s,
           v,
           changeEvents = [];
-      $.extend(true, $this, {
+      $.extend(true, that, {
         // public properties and methods
         val: val,
         bind: bind,
@@ -25191,16 +25872,16 @@ var jPicker = function jPicker($) {
       });
 
       if (init) {
-        if (init.ahex != null) {
+        if (!isNullish$1(init.ahex)) {
           val('ahex', init);
-        } else if (init.hex != null) {
-          val((init.a != null ? 'a' : '') + 'hex', init.a != null ? {
+        } else if (!isNullish$1(init.hex)) {
+          val((!isNullish$1(init.a) ? 'a' : '') + 'hex', !isNullish$1(init.a) ? {
             ahex: init.hex + ColorMethods.intToHex(init.a)
           } : init);
-        } else if (init.r != null && init.g != null && init.b != null) {
-          val('rgb' + (init.a != null ? 'a' : ''), init);
-        } else if (init.h != null && init.s != null && init.v != null) {
-          val('hsv' + (init.a != null ? 'a' : ''), init);
+        } else if (!isNullish$1(init.r) && !isNullish$1(init.g) && !isNullish$1(init.b)) {
+          val('rgb' + (!isNullish$1(init.a) ? 'a' : ''), init);
+        } else if (!isNullish$1(init.h) && !isNullish$1(init.s) && !isNullish$1(init.v)) {
+          val('hsv' + (!isNullish$1(init.a) ? 'a' : ''), init);
         }
       }
     },
@@ -25375,8 +26056,8 @@ var jPicker = function jPicker($) {
         } else {
           if (h === 360) h = 0;
           h /= 60;
-          s = s / 100;
-          v = v / 100;
+          s /= 100;
+          v /= 100;
           var i = h | 0,
               f = h - i,
               p = v * (1 - s),
@@ -25440,6 +26121,28 @@ var jPicker = function jPicker($) {
    * @see {@link external:jQuery.fn.$.fn.jPicker}
    */
 
+  /**
+  * Will be bound to active {@link jQuery.jPicker.Color}
+  * @callback module:jPicker.LiveCallback
+  * @param {external:jQuery} ui
+  * @param {Element} context
+  * @returns {undefined}
+  */
+
+  /**
+  * @callback module:jPicker.CommitCallback
+  * @param {external:jQuery.jPicker.Color} activeColor
+  * @param {external:jQuery} okButton
+  * @returns {undefined} Return value not used.
+  */
+
+  /**
+   * @callback module:jPicker.CancelCallback
+   * @param {external:jQuery.jPicker.Color} activeColor
+   * @param {external:jQuery} cancelButton
+   * @returns {undefined} Return value not used.
+   */
+
   /**
   * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't
   *   get us treated as a function as well as a namespace (even with `@function name`),
@@ -25447,46 +26150,48 @@ var jPicker = function jPicker($) {
   * @namespace
   * @memberof external:jQuery.fn
   * @param {external:jQuery.fn.jPickerOptions} options
+  * @param {module:jPicker.CommitCallback} [commitCallback]
+  * @param {module:jPicker.LiveCallback} [liveCallback]
+  * @param {module:jPicker.CancelCallback} [cancelCallback]
   * @returns {external:jQuery}
   */
 
-  $.fn.jPicker = function (options) {
-    var $arguments = arguments;
+  $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {
     return this.each(function () {
-      var $this = this,
+      var that = this,
           settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor
 
-      if ($($this).get(0).nodeName.toLowerCase() === 'input') {
+      if ($(that).get(0).nodeName.toLowerCase() === 'input') {
         // Add color picker icon if binding to an input element and bind the events to the input
         $.extend(true, settings, {
           window: {
             bindToInput: true,
             expandable: true,
-            input: $($this)
+            input: $(that)
           }
         });
 
-        if ($($this).val() === '') {
+        if ($(that).val() === '') {
           settings.color.active = new Color({
             hex: null
           });
           settings.color.current = new Color({
             hex: null
           });
-        } else if (ColorMethods.validateHex($($this).val())) {
+        } else if (ColorMethods.validateHex($(that).val())) {
           settings.color.active = new Color({
-            hex: $($this).val(),
+            hex: $(that).val(),
             a: settings.color.active.val('a')
           });
           settings.color.current = new Color({
-            hex: $($this).val(),
+            hex: $(that).val(),
             a: settings.color.active.val('a')
           });
         }
       }
 
       if (settings.window.expandable) {
-        $($this).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
+        $(that).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
       } else {
         settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results
       }
@@ -25496,7 +26201,7 @@ var jPicker = function jPicker($) {
 
       /**
        *
-       * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode [description]
+       * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode
        * @throws {Error} Invalid mode
        * @returns {undefined}
        */
@@ -25510,22 +26215,22 @@ var jPicker = function jPicker($) {
         switch (colorMode) {
           case 'h':
             setTimeout(function () {
-              setBG.call($this, colorMapDiv, 'transparent');
-              setImgLoc.call($this, colorMapL1, 0);
-              setAlpha.call($this, colorMapL1, 100);
-              setImgLoc.call($this, colorMapL2, 260);
-              setAlpha.call($this, colorMapL2, 100);
-              setBG.call($this, colorBarDiv, 'transparent');
-              setImgLoc.call($this, colorBarL1, 0);
-              setAlpha.call($this, colorBarL1, 100);
-              setImgLoc.call($this, colorBarL2, 260);
-              setAlpha.call($this, colorBarL2, 100);
-              setImgLoc.call($this, colorBarL3, 260);
-              setAlpha.call($this, colorBarL3, 100);
-              setImgLoc.call($this, colorBarL4, 260);
-              setAlpha.call($this, colorBarL4, 100);
-              setImgLoc.call($this, colorBarL6, 260);
-              setAlpha.call($this, colorBarL6, 100);
+              setBG.call(that, colorMapDiv, 'transparent');
+              setImgLoc.call(that, colorMapL1, 0);
+              setAlpha.call(that, colorMapL1, 100);
+              setImgLoc.call(that, colorMapL2, 260);
+              setAlpha.call(that, colorMapL2, 100);
+              setBG.call(that, colorBarDiv, 'transparent');
+              setImgLoc.call(that, colorBarL1, 0);
+              setAlpha.call(that, colorBarL1, 100);
+              setImgLoc.call(that, colorBarL2, 260);
+              setAlpha.call(that, colorBarL2, 100);
+              setImgLoc.call(that, colorBarL3, 260);
+              setAlpha.call(that, colorBarL3, 100);
+              setImgLoc.call(that, colorBarL4, 260);
+              setAlpha.call(that, colorBarL4, 100);
+              setImgLoc.call(that, colorBarL6, 260);
+              setAlpha.call(that, colorBarL6, 100);
             }, 0);
             colorMap.range('all', {
               minX: 0,
@@ -25537,7 +26242,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 360
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('s'),
               y: 100 - active.val('v')
@@ -25547,13 +26252,13 @@ var jPicker = function jPicker($) {
 
           case 's':
             setTimeout(function () {
-              setBG.call($this, colorMapDiv, 'transparent');
-              setImgLoc.call($this, colorMapL1, -260);
-              setImgLoc.call($this, colorMapL2, -520);
-              setImgLoc.call($this, colorBarL1, -260);
-              setImgLoc.call($this, colorBarL2, -520);
-              setImgLoc.call($this, colorBarL6, 260);
-              setAlpha.call($this, colorBarL6, 100);
+              setBG.call(that, colorMapDiv, 'transparent');
+              setImgLoc.call(that, colorMapL1, -260);
+              setImgLoc.call(that, colorMapL2, -520);
+              setImgLoc.call(that, colorBarL1, -260);
+              setImgLoc.call(that, colorBarL2, -520);
+              setImgLoc.call(that, colorBarL6, 260);
+              setAlpha.call(that, colorBarL6, 100);
             }, 0);
             colorMap.range('all', {
               minX: 0,
@@ -25565,7 +26270,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 100
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('h'),
               y: 100 - active.val('v')
@@ -25575,15 +26280,15 @@ var jPicker = function jPicker($) {
 
           case 'v':
             setTimeout(function () {
-              setBG.call($this, colorMapDiv, '000000');
-              setImgLoc.call($this, colorMapL1, -780);
-              setImgLoc.call($this, colorMapL2, 260);
-              setBG.call($this, colorBarDiv, hex);
-              setImgLoc.call($this, colorBarL1, -520);
-              setImgLoc.call($this, colorBarL2, 260);
-              setAlpha.call($this, colorBarL2, 100);
-              setImgLoc.call($this, colorBarL6, 260);
-              setAlpha.call($this, colorBarL6, 100);
+              setBG.call(that, colorMapDiv, '000000');
+              setImgLoc.call(that, colorMapL1, -780);
+              setImgLoc.call(that, colorMapL2, 260);
+              setBG.call(that, colorBarDiv, hex);
+              setImgLoc.call(that, colorBarL1, -520);
+              setImgLoc.call(that, colorBarL2, 260);
+              setAlpha.call(that, colorBarL2, 100);
+              setImgLoc.call(that, colorBarL6, 260);
+              setAlpha.call(that, colorBarL6, 100);
             }, 0);
             colorMap.range('all', {
               minX: 0,
@@ -25595,7 +26300,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 100
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('h'),
               y: 100 - active.val('s')
@@ -25616,7 +26321,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 255
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('b'),
               y: 255 - active.val('g')
@@ -25637,7 +26342,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 255
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('b'),
               y: 255 - active.val('r')
@@ -25658,7 +26363,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 255
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('r'),
               y: 255 - active.val('g')
@@ -25668,14 +26373,14 @@ var jPicker = function jPicker($) {
 
           case 'a':
             setTimeout(function () {
-              setBG.call($this, colorMapDiv, 'transparent');
-              setImgLoc.call($this, colorMapL1, -260);
-              setImgLoc.call($this, colorMapL2, -520);
-              setImgLoc.call($this, colorBarL1, 260);
-              setImgLoc.call($this, colorBarL2, 260);
-              setAlpha.call($this, colorBarL2, 100);
-              setImgLoc.call($this, colorBarL6, 0);
-              setAlpha.call($this, colorBarL6, 100);
+              setBG.call(that, colorMapDiv, 'transparent');
+              setImgLoc.call(that, colorMapL1, -260);
+              setImgLoc.call(that, colorMapL2, -520);
+              setImgLoc.call(that, colorBarL1, 260);
+              setImgLoc.call(that, colorBarL2, 260);
+              setAlpha.call(that, colorBarL2, 100);
+              setImgLoc.call(that, colorBarL6, 0);
+              setAlpha.call(that, colorBarL6, 100);
             }, 0);
             colorMap.range('all', {
               minX: 0,
@@ -25687,7 +26392,7 @@ var jPicker = function jPicker($) {
               minY: 0,
               maxY: 255
             });
-            if (active.val('ahex') == null) break;
+            if (isNullish$1(active.val('ahex'))) break;
             colorMap.val('xy', {
               x: active.val('h'),
               y: 100 - active.val('v')
@@ -25707,12 +26412,12 @@ var jPicker = function jPicker($) {
           case 'v':
           case 'a':
             setTimeout(function () {
-              setAlpha.call($this, colorMapL1, 100);
-              setAlpha.call($this, colorBarL1, 100);
-              setImgLoc.call($this, colorBarL3, 260);
-              setAlpha.call($this, colorBarL3, 100);
-              setImgLoc.call($this, colorBarL4, 260);
-              setAlpha.call($this, colorBarL4, 100);
+              setAlpha.call(that, colorMapL1, 100);
+              setAlpha.call(that, colorBarL1, 100);
+              setImgLoc.call(that, colorBarL3, 260);
+              setAlpha.call(that, colorBarL3, 100);
+              setImgLoc.call(that, colorBarL4, 260);
+              setAlpha.call(that, colorBarL4, 100);
             }, 0);
             break;
 
@@ -25720,40 +26425,52 @@ var jPicker = function jPicker($) {
           case 'g':
           case 'b':
             setTimeout(function () {
-              setBG.call($this, colorMapDiv, 'transparent');
-              setBG.call($this, colorBarDiv, 'transparent');
-              setAlpha.call($this, colorBarL1, 100);
-              setAlpha.call($this, colorMapL1, 100);
-              setImgLoc.call($this, colorMapL1, rgbMap);
-              setImgLoc.call($this, colorMapL2, rgbMap - 260);
-              setImgLoc.call($this, colorBarL1, rgbBar - 780);
-              setImgLoc.call($this, colorBarL2, rgbBar - 520);
-              setImgLoc.call($this, colorBarL3, rgbBar);
-              setImgLoc.call($this, colorBarL4, rgbBar - 260);
-              setImgLoc.call($this, colorBarL6, 260);
-              setAlpha.call($this, colorBarL6, 100);
+              setBG.call(that, colorMapDiv, 'transparent');
+              setBG.call(that, colorBarDiv, 'transparent');
+              setAlpha.call(that, colorBarL1, 100);
+              setAlpha.call(that, colorMapL1, 100);
+              setImgLoc.call(that, colorMapL1, rgbMap);
+              setImgLoc.call(that, colorMapL2, rgbMap - 260);
+              setImgLoc.call(that, colorBarL1, rgbBar - 780);
+              setImgLoc.call(that, colorBarL2, rgbBar - 520);
+              setImgLoc.call(that, colorBarL3, rgbBar);
+              setImgLoc.call(that, colorBarL4, rgbBar - 260);
+              setImgLoc.call(that, colorBarL6, 260);
+              setAlpha.call(that, colorBarL6, 100);
             }, 0);
             break;
         }
 
-        if (active.val('ahex') == null) return;
-        activeColorChanged.call($this, active);
-      } // Update color when user changes text values
+        if (isNullish$1(active.val('ahex'))) return;
+        activeColorChanged.call(that, active);
+      }
+      /**
+       * Update color when user changes text values.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
 
 
       function activeColorChanged(ui, context) {
-        if (context == null || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call($this, ui, context);
+        if (isNullish$1(context) || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call(that, ui, context);
         setTimeout(function () {
-          updatePreview.call($this, ui);
-          updateMapVisuals.call($this, ui);
-          updateBarVisuals.call($this, ui);
+          updatePreview.call(that, ui);
+          updateMapVisuals.call(that, ui);
+          updateBarVisuals.call(that, ui);
         }, 0);
-      } // user has dragged the ColorMap pointer
+      }
+      /**
+       * User has dragged the ColorMap pointer.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
 
 
       function mapValueChanged(ui, context) {
         var active = color.active;
-        if (context !== colorMap && active.val() == null) return;
+        if (context !== colorMap && isNullish$1(active.val())) return;
         var xy = ui.val('all');
 
         switch (settings.color.mode) {
@@ -25800,12 +26517,18 @@ var jPicker = function jPicker($) {
             }, context);
             break;
         }
-      } // user has dragged the ColorBar slider
+      }
+      /**
+       * User has dragged the ColorBar slider.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
 
 
       function colorBarValueChanged(ui, context) {
         var active = color.active;
-        if (context !== colorBar && active.val() == null) return;
+        if (context !== colorBar && isNullish$1(active.val())) return;
 
         switch (settings.color.mode) {
           case 'h':
@@ -25848,60 +26571,79 @@ var jPicker = function jPicker($) {
             active.val('a', 255 - ui.val('y'), context);
             break;
         }
-      } // position map and bar arrows to match current color
+      }
+      /**
+       * Position map and bar arrows to match current color.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
 
 
       function positionMapAndBarArrows(ui, context) {
         if (context !== colorMap) {
           switch (settings.color.mode) {
             case 'h':
-              var sv = ui.val('sv');
-              colorMap.val('xy', {
-                x: sv != null ? sv.s : 100,
-                y: 100 - (sv != null ? sv.v : 100)
-              }, context);
-              break;
+              {
+                var sv = ui.val('sv');
+                colorMap.val('xy', {
+                  x: !isNullish$1(sv) ? sv.s : 100,
+                  y: 100 - (!isNullish$1(sv) ? sv.v : 100)
+                }, context);
+                break;
+              }
+
+            case 's': // Fall through
 
-            case 's':
             case 'a':
-              var hv = ui.val('hv');
-              colorMap.val('xy', {
-                x: hv && hv.h || 0,
-                y: 100 - (hv != null ? hv.v : 100)
-              }, context);
-              break;
+              {
+                var hv = ui.val('hv');
+                colorMap.val('xy', {
+                  x: hv && hv.h || 0,
+                  y: 100 - (!isNullish$1(hv) ? hv.v : 100)
+                }, context);
+                break;
+              }
 
             case 'v':
-              var hs = ui.val('hs');
-              colorMap.val('xy', {
-                x: hs && hs.h || 0,
-                y: 100 - (hs != null ? hs.s : 100)
-              }, context);
-              break;
+              {
+                var hs = ui.val('hs');
+                colorMap.val('xy', {
+                  x: hs && hs.h || 0,
+                  y: 100 - (!isNullish$1(hs) ? hs.s : 100)
+                }, context);
+                break;
+              }
 
             case 'r':
-              var bg = ui.val('bg');
-              colorMap.val('xy', {
-                x: bg && bg.b || 0,
-                y: 255 - (bg && bg.g || 0)
-              }, context);
-              break;
+              {
+                var bg = ui.val('bg');
+                colorMap.val('xy', {
+                  x: bg && bg.b || 0,
+                  y: 255 - (bg && bg.g || 0)
+                }, context);
+                break;
+              }
 
             case 'g':
-              var br = ui.val('br');
-              colorMap.val('xy', {
-                x: br && br.b || 0,
-                y: 255 - (br && br.r || 0)
-              }, context);
-              break;
+              {
+                var br = ui.val('br');
+                colorMap.val('xy', {
+                  x: br && br.b || 0,
+                  y: 255 - (br && br.r || 0)
+                }, context);
+                break;
+              }
 
             case 'b':
-              var rg = ui.val('rg');
-              colorMap.val('xy', {
-                x: rg && rg.r || 0,
-                y: 255 - (rg && rg.g || 0)
-              }, context);
-              break;
+              {
+                var rg = ui.val('rg');
+                colorMap.val('xy', {
+                  x: rg && rg.r || 0,
+                  y: 255 - (rg && rg.g || 0)
+                }, context);
+                break;
+              }
           }
         }
 
@@ -25912,14 +26654,18 @@ var jPicker = function jPicker($) {
               break;
 
             case 's':
-              var s = ui.val('s');
-              colorBar.val('y', 100 - (s != null ? s : 100), context);
-              break;
+              {
+                var s = ui.val('s');
+                colorBar.val('y', 100 - (!isNullish$1(s) ? s : 100), context);
+                break;
+              }
 
             case 'v':
-              var v = ui.val('v');
-              colorBar.val('y', 100 - (v != null ? v : 100), context);
-              break;
+              {
+                var v = ui.val('v');
+                colorBar.val('y', 100 - (!isNullish$1(v) ? v : 100), context);
+                break;
+              }
 
             case 'r':
               colorBar.val('y', 255 - (ui.val('r') || 0), context);
@@ -25934,12 +26680,19 @@ var jPicker = function jPicker($) {
               break;
 
             case 'a':
-              var a = ui.val('a');
-              colorBar.val('y', 255 - (a != null ? a : 255), context);
-              break;
+              {
+                var a = ui.val('a');
+                colorBar.val('y', 255 - (!isNullish$1(a) ? a : 255), context);
+                break;
+              }
           }
         }
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
+
 
       function updatePreview(ui) {
         try {
@@ -25947,14 +26700,19 @@ var jPicker = function jPicker($) {
           activePreview.css({
             backgroundColor: all && '#' + all.hex || 'transparent'
           });
-          setAlpha.call($this, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
+          setAlpha.call(that, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
         } catch (e) {}
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
+
 
       function updateMapVisuals(ui) {
         switch (settings.color.mode) {
           case 'h':
-            setBG.call($this, colorMapDiv, new Color({
+            setBG.call(that, colorMapDiv, new Color({
               h: ui.val('h') || 0,
               s: 100,
               v: 100
@@ -25963,104 +26721,133 @@ var jPicker = function jPicker($) {
 
           case 's':
           case 'a':
-            var s = ui.val('s');
-            setAlpha.call($this, colorMapL2, 100 - (s != null ? s : 100));
-            break;
+            {
+              var s = ui.val('s');
+              setAlpha.call(that, colorMapL2, 100 - (!isNullish$1(s) ? s : 100));
+              break;
+            }
 
           case 'v':
-            var v = ui.val('v');
-            setAlpha.call($this, colorMapL1, v != null ? v : 100);
-            break;
+            {
+              var v = ui.val('v');
+              setAlpha.call(that, colorMapL1, !isNullish$1(v) ? v : 100);
+              break;
+            }
 
           case 'r':
-            setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
+            setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
             break;
 
           case 'g':
-            setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
+            setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
             break;
 
           case 'b':
-            setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
+            setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
             break;
         }
 
         var a = ui.val('a');
-        setAlpha.call($this, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+        setAlpha.call(that, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
+
 
       function updateBarVisuals(ui) {
         switch (settings.color.mode) {
           case 'h':
-            var a = ui.val('a');
-            setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
-            break;
+            {
+              var a = ui.val('a');
+              setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+              break;
+            }
 
           case 's':
-            var hva = ui.val('hva'),
-                saturatedColor = new Color({
-              h: hva && hva.h || 0,
-              s: 100,
-              v: hva != null ? hva.v : 100
-            });
-            setBG.call($this, colorBarDiv, saturatedColor.val('hex'));
-            setAlpha.call($this, colorBarL2, 100 - (hva != null ? hva.v : 100));
-            setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
-            break;
+            {
+              var hva = ui.val('hva'),
+                  saturatedColor = new Color({
+                h: hva && hva.h || 0,
+                s: 100,
+                v: !isNullish$1(hva) ? hva.v : 100
+              });
+              setBG.call(that, colorBarDiv, saturatedColor.val('hex'));
+              setAlpha.call(that, colorBarL2, 100 - (!isNullish$1(hva) ? hva.v : 100));
+              setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
+              break;
+            }
 
           case 'v':
-            var hsa = ui.val('hsa'),
-                valueColor = new Color({
-              h: hsa && hsa.h || 0,
-              s: hsa != null ? hsa.s : 100,
-              v: 100
-            });
-            setBG.call($this, colorBarDiv, valueColor.val('hex'));
-            setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
-            break;
+            {
+              var hsa = ui.val('hsa'),
+                  valueColor = new Color({
+                h: hsa && hsa.h || 0,
+                s: !isNullish$1(hsa) ? hsa.s : 100,
+                v: 100
+              });
+              setBG.call(that, colorBarDiv, valueColor.val('hex'));
+              setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
+              break;
+            }
 
           case 'r':
           case 'g':
           case 'b':
-            var rgba = ui.val('rgba');
-            var hValue = 0,
-                vValue = 0;
+            {
+              var rgba = ui.val('rgba');
+              var hValue = 0,
+                  vValue = 0;
 
-            if (settings.color.mode === 'r') {
-              hValue = rgba && rgba.b || 0;
-              vValue = rgba && rgba.g || 0;
-            } else if (settings.color.mode === 'g') {
-              hValue = rgba && rgba.b || 0;
-              vValue = rgba && rgba.r || 0;
-            } else if (settings.color.mode === 'b') {
-              hValue = rgba && rgba.r || 0;
-              vValue = rgba && rgba.g || 0;
+              if (settings.color.mode === 'r') {
+                hValue = rgba && rgba.b || 0;
+                vValue = rgba && rgba.g || 0;
+              } else if (settings.color.mode === 'g') {
+                hValue = rgba && rgba.b || 0;
+                vValue = rgba && rgba.r || 0;
+              } else if (settings.color.mode === 'b') {
+                hValue = rgba && rgba.r || 0;
+                vValue = rgba && rgba.g || 0;
+              }
+
+              var middle = vValue > hValue ? hValue : vValue;
+              setAlpha.call(that, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
+              setAlpha.call(that, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
+              setAlpha.call(that, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
+              setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
+              break;
             }
 
-            var middle = vValue > hValue ? hValue : vValue;
-            setAlpha.call($this, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
-            setAlpha.call($this, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
-            setAlpha.call($this, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
-            setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
-            break;
-
           case 'a':
             {
               var _a = ui.val('a');
 
-              setBG.call($this, colorBarDiv, ui.val('hex') || '000000');
-              setAlpha.call($this, colorBarL5, _a != null ? 0 : 100);
-              setAlpha.call($this, colorBarL6, _a != null ? 100 : 0);
+              setBG.call(that, colorBarDiv, ui.val('hex') || '000000');
+              setAlpha.call(that, colorBarL5, !isNullish$1(_a) ? 0 : 100);
+              setAlpha.call(that, colorBarL6, !isNullish$1(_a) ? 100 : 0);
               break;
             }
         }
       }
+      /**
+      * @param {external:jQuery} el
+      * @param {string} [c="transparent"]
+      * @returns {undefined}
+      */
+
 
       function setBG(el, c) {
         el.css({
           backgroundColor: c && c.length === 6 && '#' + c || 'transparent'
         });
       }
+      /**
+      * @param {external:jQuery} img
+      * @param {string} src The image source
+      * @returns {undefined}
+      */
+
 
       function setImg(img, src) {
         if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
@@ -26073,12 +26860,24 @@ var jPicker = function jPicker($) {
           backgroundImage: 'url(\'' + src + '\')'
         });
       }
+      /**
+      * @param {external:jQuery} img
+      * @param {Float} y
+      * @returns {undefined}
+      */
+
 
       function setImgLoc(img, y) {
         img.css({
           top: y + 'px'
         });
       }
+      /**
+      * @param {external:jQuery} obj
+      * @param {Float} alpha
+      * @returns {undefined}
+      */
+
 
       function setAlpha(obj, alpha) {
         obj.css({
@@ -26089,7 +26888,7 @@ var jPicker = function jPicker($) {
           if (isLessThanIE7) {
             var src = obj.attr('pngSrc');
 
-            if (src != null && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
+            if (!isNullish$1(src) && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
               obj.css({
                 filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'
               });
@@ -26103,7 +26902,7 @@ var jPicker = function jPicker($) {
           if (isLessThanIE7) {
             var _src = obj.attr('pngSrc');
 
-            if (_src != null && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
+            if (!isNullish$1(_src) && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
               obj.css({
                 filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + _src + '\', sizingMethod=\'scale\')'
               });
@@ -26114,66 +26913,114 @@ var jPicker = function jPicker($) {
             opacity: ''
           });
         }
-      } // revert color to original color when opened
+      }
+      /**
+      * Revert color to original color when opened.
+      * @returns {undefined}
+      */
 
 
       function revertColor() {
         color.active.val('ahex', color.current.val('ahex'));
-      } // commit the color changes
+      }
+      /**
+      * Commit the color changes.
+      * @returns {undefined}
+      */
 
 
       function commitColor() {
         color.current.val('ahex', color.active.val('ahex'));
       }
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
+
 
       function radioClicked(e) {
         $(this).parents('tbody:first').find('input:radio[value!="' + e.target.value + '"]').removeAttr('checked');
-        setColorMode.call($this, e.target.value);
+        setColorMode.call(that, e.target.value);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function currentClicked() {
-        revertColor.call($this);
+        revertColor.call(that);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function cancelClicked() {
-        revertColor.call($this);
-        settings.window.expandable && hide.call($this);
-        typeof cancelCallback === 'function' && cancelCallback.call($this, color.active, cancelButton);
+        revertColor.call(that);
+        settings.window.expandable && hide.call(that);
+        typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function okClicked() {
-        commitColor.call($this);
-        settings.window.expandable && hide.call($this);
-        typeof commitCallback === 'function' && commitCallback.call($this, color.active, okButton);
+        commitColor.call(that);
+        settings.window.expandable && hide.call(that);
+        typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function iconImageClicked() {
-        show.call($this);
+        show.call(that);
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
 
-      function currentColorChanged(ui, context) {
+
+      function currentColorChanged(ui) {
         var hex = ui.val('hex');
         currentPreview.css({
           backgroundColor: hex && '#' + hex || 'transparent'
         });
-        setAlpha.call($this, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
+        setAlpha.call(that, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
 
-      function expandableColorChanged(ui, context) {
+
+      function expandableColorChanged(ui) {
         var hex = ui.val('hex');
         var va = ui.val('va');
         iconColor.css({
           backgroundColor: hex && '#' + hex || 'transparent'
         });
-        setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
+        setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
 
         if (settings.window.bindToInput && settings.window.updateInputColor) {
           settings.window.input.css({
             backgroundColor: hex && '#' + hex || 'transparent',
-            color: va == null || va.v > 75 ? '#000000' : '#ffffff'
+            color: isNullish$1(va) || va.v > 75 ? '#000000' : '#ffffff'
           });
         }
       }
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
+
 
       function moveBarMouseDown(e) {
         // const {element} = settings.window, // local copies for YUI compressor
@@ -26186,20 +27033,34 @@ var jPicker = function jPicker($) {
         $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);
         e.preventDefault(); // prevent attempted dragging of the column
       }
+      /**
+      * @param {Event} e
+      * @returns {false}
+      */
+
 
       function documentMouseMove(e) {
         container.css({
           left: elementStartX - (pageStartX - e.pageX) + 'px',
           top: elementStartY - (pageStartY - e.pageY) + 'px'
         });
-        if (settings.window.expandable && !$.support.boxModel) container.prev().css({
-          left: container.css('left'),
-          top: container.css('top')
-        });
+
+        if (settings.window.expandable && !$.support.boxModel) {
+          container.prev().css({
+            left: container.css('left'),
+            top: container.css('top')
+          });
+        }
+
         e.stopPropagation();
         e.preventDefault();
         return false;
       }
+      /**
+      * @param {Event} e
+      * @returns {false}
+      */
+
 
       function documentMouseUp(e) {
         $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);
@@ -26207,6 +27068,11 @@ var jPicker = function jPicker($) {
         e.preventDefault();
         return false;
       }
+      /**
+      * @param {Event} e
+      * @returns {false}
+      */
+
 
       function quickPickClicked(e) {
         e.preventDefault();
@@ -26214,9 +27080,18 @@ var jPicker = function jPicker($) {
         color.active.val('ahex', $(this).attr('title') || null, e.target);
         return false;
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function show() {
         color.current.val('ahex', color.active.val('ahex'));
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function attachIFrame() {
           if (!settings.window.expandable || $.support.boxModel) return;
@@ -26256,8 +27131,17 @@ var jPicker = function jPicker($) {
             break;
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function hide() {
+        /**
+        *
+        * @returns {undefined}
+        */
         function removeIFrame() {
           if (settings.window.expandable) container.css({
             zIndex: 10
@@ -26281,23 +27165,29 @@ var jPicker = function jPicker($) {
             break;
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function initialize() {
         var win = settings.window,
-            popup = win.expandable ? $($this).next().find('.Container:first') : null;
-        container = win.expandable ? $('<div/>') : $($this);
+            popup = win.expandable ? $(that).next().find('.Container:first') : null;
+        container = win.expandable ? $('<div/>') : $(that);
         container.addClass('jPicker Container');
         if (win.expandable) container.hide();
 
-        container.get(0).onselectstart = function (event) {
-          if (event.target.nodeName.toLowerCase() !== 'input') return false;
+        container.get(0).onselectstart = function (e) {
+          if (e.target.nodeName.toLowerCase() !== 'input') return false;
+          return true;
         }; // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and
         // this control really is tabular data, so I believe it is the right move
 
 
         var all = color.active.val('all');
         if (win.alphaPrecision < 0) win.alphaPrecision = 0;else if (win.alphaPrecision > 2) win.alphaPrecision = 2;
-        var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(all != null ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(all != null ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(all != null ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
+        var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(!isNullish$1(all) ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(!isNullish$1(all) ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
 
         if (win.expandable) {
           container.html(controlHtml);
@@ -26323,7 +27213,7 @@ var jPicker = function jPicker($) {
             top: win.position.y === 'top' ? popup.offset().top - 312 + 'px' : win.position.y === 'center' ? popup.offset().top - 156 + 'px' : win.position.y === 'bottom' ? popup.offset().top + 25 + 'px' : popup.offset().top + parseInt(win.position.y) + 'px'
           });
         } else {
-          container = $($this);
+          container = $(that);
           container.html(controlHtml);
         } // initialize the objects to the source code just injected
 
@@ -26368,7 +27258,7 @@ var jPicker = function jPicker($) {
         });
         colorBar.bind(colorBarValueChanged);
         colorPicker = new ColorValuePicker(tbody, color.active, win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision);
-        var hex = all != null ? all.hex : null,
+        var hex = !isNullish$1(all) ? all.hex : null,
             preview = tbody.find('.Preview'),
             button = tbody.find('.Button');
         activePreview = preview.find('.Active:first').css({
@@ -26377,21 +27267,21 @@ var jPicker = function jPicker($) {
         currentPreview = preview.find('.Current:first').css({
           backgroundColor: hex && '#' + hex || 'transparent'
         }).bind('click', currentClicked);
-        setAlpha.call($this, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
+        setAlpha.call(that, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
         okButton = button.find('.Ok:first').bind('click', okClicked);
         cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);
         grid = button.find('.Grid:first');
         setTimeout(function () {
-          setImg.call($this, colorMapL1, images.clientPath + 'Maps.png');
-          setImg.call($this, colorMapL2, images.clientPath + 'Maps.png');
-          setImg.call($this, colorMapL3, images.clientPath + 'map-opacity.png');
-          setImg.call($this, colorBarL1, images.clientPath + 'Bars.png');
-          setImg.call($this, colorBarL2, images.clientPath + 'Bars.png');
-          setImg.call($this, colorBarL3, images.clientPath + 'Bars.png');
-          setImg.call($this, colorBarL4, images.clientPath + 'Bars.png');
-          setImg.call($this, colorBarL5, images.clientPath + 'bar-opacity.png');
-          setImg.call($this, colorBarL6, images.clientPath + 'AlphaBar.png');
-          setImg.call($this, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
+          setImg.call(that, colorMapL1, images.clientPath + 'Maps.png');
+          setImg.call(that, colorMapL2, images.clientPath + 'Maps.png');
+          setImg.call(that, colorMapL3, images.clientPath + 'map-opacity.png');
+          setImg.call(that, colorBarL1, images.clientPath + 'Bars.png');
+          setImg.call(that, colorBarL2, images.clientPath + 'Bars.png');
+          setImg.call(that, colorBarL3, images.clientPath + 'Bars.png');
+          setImg.call(that, colorBarL4, images.clientPath + 'Bars.png');
+          setImg.call(that, colorBarL5, images.clientPath + 'bar-opacity.png');
+          setImg.call(that, colorBarL6, images.clientPath + 'AlphaBar.png');
+          setImg.call(that, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
         }, 0);
         tbody.find('td.Radio input').bind('click', radioClicked); // initialize quick list
 
@@ -26403,47 +27293,55 @@ var jPicker = function jPicker($) {
             if (_typeof(color.quickList[i]).toString().toLowerCase() === 'string') color.quickList[i] = new Color({
               hex: color.quickList[i]
             });
-            var alpha = color.quickList[i].val('a');
-            var ahex = color.quickList[i].val('ahex');
-            if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';
+
+            var _alpha = color.quickList[i].val('a');
+
+            var _ahex = color.quickList[i].val('ahex');
+
+            if (!win.alphaSupport && _ahex) _ahex = _ahex.substring(0, 6) + 'ff';
             var quickHex = color.quickList[i].val('hex');
-            if (!ahex) ahex = '00000000';
-            html += '<span class="QuickColor"' + (' title="#' + ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
+            if (!_ahex) _ahex = '00000000';
+            html += '<span class="QuickColor"' + (' title="#' + _ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && _alpha && _alpha < 255 ? ';opacity:' + toFixedNumeric(_alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(_alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
           }
 
-          setImg.call($this, grid, images.clientPath + 'bar-opacity.png');
+          setImg.call(that, grid, images.clientPath + 'bar-opacity.png');
           grid.html(html);
           grid.find('.QuickColor').click(quickPickClicked);
         }
 
-        setColorMode.call($this, settings.color.mode);
+        setColorMode.call(that, settings.color.mode);
         color.active.bind(activeColorChanged);
         typeof liveCallback === 'function' && color.active.bind(liveCallback);
         color.current.bind(currentColorChanged); // bind to input
 
         if (win.expandable) {
-          $this.icon = popup.parents('.Icon:first');
-          iconColor = $this.icon.find('.Color:first').css({
+          that.icon = popup.parents('.Icon:first');
+          iconColor = that.icon.find('.Color:first').css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          iconAlpha = $this.icon.find('.Alpha:first');
-          setImg.call($this, iconAlpha, images.clientPath + 'bar-opacity.png');
-          setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (all != null ? all.a : 0)) * 100 / 255, 4));
-          iconImage = $this.icon.find('.Image:first').css({
+          iconAlpha = that.icon.find('.Alpha:first');
+          setImg.call(that, iconAlpha, images.clientPath + 'bar-opacity.png');
+          setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (!isNullish$1(all) ? all.a : 0)) * 100 / 255, 4));
+          iconImage = that.icon.find('.Image:first').css({
             backgroundImage: 'url(\'' + images.clientPath + images.picker.file + '\')'
           }).bind('click', iconImageClicked);
 
           if (win.bindToInput && win.updateInputColor) {
             win.input.css({
               backgroundColor: hex && '#' + hex || 'transparent',
-              color: all == null || all.v > 75 ? '#000000' : '#ffffff'
+              color: isNullish$1(all) || all.v > 75 ? '#000000' : '#ffffff'
             });
           }
 
           moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);
           color.active.bind(expandableColorChanged);
-        } else show.call($this);
+        } else show.call(that);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function destroy() {
         container.find('td.Radio input').unbind('click', radioClicked);
@@ -26454,7 +27352,7 @@ var jPicker = function jPicker($) {
         if (settings.window.expandable) {
           iconImage.unbind('click', iconImageClicked);
           moveBar.unbind('mousedown', moveBarMouseDown);
-          $this.icon = null;
+          that.icon = null;
         }
 
         container.find('.QuickColor').unbind('click', quickPickClicked);
@@ -26486,7 +27384,7 @@ var jPicker = function jPicker($) {
         container.html('');
 
         for (var i = 0; i < List.length; i++) {
-          if (List[i] === $this) {
+          if (List[i] === that) {
             List.splice(i, 1);
           }
         }
@@ -26508,6 +27406,19 @@ var jPicker = function jPicker($) {
         }),
         quickList: settings.color.quickList
       };
+
+      if (typeof commitCallback !== 'function') {
+        commitCallback = null;
+      }
+
+      if (typeof liveCallback !== 'function') {
+        liveCallback = null;
+      }
+
+      if (typeof cancelCallback !== 'function') {
+        cancelCallback = null;
+      }
+
       var elementStartX = null,
           // Used to record the starting css positions for dragging the control
       elementStartY = null,
@@ -26544,12 +27455,9 @@ var jPicker = function jPicker($) {
           // iconAlpha for popup icon
       iconImage = null,
           // iconImage popup icon
-      moveBar = null,
-          // drag bar
-      commitCallback = typeof $arguments[1] === 'function' ? $arguments[1] : null,
-          liveCallback = typeof $arguments[2] === 'function' ? $arguments[2] : null,
-          cancelCallback = typeof $arguments[3] === 'function' ? $arguments[3] : null;
-      $.extend(true, $this, {
+      moveBar = null; // drag bar
+
+      $.extend(true, that, {
         // public properties, methods, and callbacks
         commitCallback: commitCallback,
         // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks "OK"
@@ -26563,9 +27471,9 @@ var jPicker = function jPicker($) {
         destroy: destroy // destroys this control entirely, removing all events and objects, and removing itself from the List
 
       });
-      List.push($this);
+      List.push(that);
       setTimeout(function () {
-        initialize.call($this);
+        initialize.call(that);
       }, 0);
     });
   };
@@ -26610,6 +27518,9 @@ var jPicker = function jPicker($) {
   * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do
   * not map directly to percentage integers - range 0-2
   * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing
+  * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`
+  * @property {boolean} [window.expandable] Added by `$.fn.jPicker`
+  * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`
   * @property {PlainObject} color
   * @property {"h"|"s"|"v"|"r"|"g"|"b"|"a"} color.mode Symbols stand for "h" (hue), "s" (saturation), "v" (value), "r" (red), "g" (green), "b" (blue), "a" (alpha)
   * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the "#" prefix
@@ -27066,7 +27977,7 @@ var setStrings = function setStrings(type, obj, ids) {
         val = _ref2[1];
 
     if (!val) {
-      console.log(sel);
+      console.log(sel); // eslint-disable-line no-console
     }
 
     if (ids) {
@@ -27085,6 +27996,8 @@ var setStrings = function setStrings(type, obj, ids) {
               node.textContent = val;
               return true;
             }
+
+            return false;
           });
 
           break;
@@ -27094,7 +28007,7 @@ var setStrings = function setStrings(type, obj, ids) {
           break;
       }
     } else {
-      console.log('Missing: ' + sel);
+      console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console
     }
   });
 };
@@ -27167,7 +28080,7 @@ function () {
               break;
             }
 
-            return _context.abrupt("return");
+            return _context.abrupt("return", undefined);
 
           case 6:
             _langData = langData, tools = _langData.tools, properties = _langData.properties, config = _langData.config, layers = _langData.layers, common = _langData.common, ui = _langData.ui;
@@ -27255,7 +28168,7 @@ function () {
               image_width: properties.image_width,
               layer_delete: layers.del,
               layer_down: layers.move_down,
-              layer_new: layers['new'],
+              layer_new: layers.new,
               layer_rename: layers.rename,
               layer_moreopts: common.more_opts,
               layer_up: layers.move_up,
@@ -27389,7 +28302,8 @@ function () {
                 }
               }
 
-              console.log('Lang: ' + langParam); // Set to English if language is not in list of good langs
+              console.log('Lang: ' + langParam); // eslint-disable-line no-console
+              // Set to English if language is not in list of good langs
 
               if (!goodLangs.includes(langParam) && langParam !== 'test') {
                 langParam = 'en';
@@ -27557,8 +28471,8 @@ function loadStylesheets(stylesheets) {
 */
 
 var editor = {};
-var $$b = [jqPluginJSHotkeys, jqPluginBBQ, jqPluginSVGIcons, jqPluginJGraduate, jqPluginSpinBtn, jqPluginSVG, jQueryContextMenu, jPicker].reduce(function ($, cb) {
-  return cb($);
+var $$b = [jQueryPluginJSHotkeys, jQueryPluginBBQ, jQueryPluginSVGIcons, jQueryPluginJGraduate, jQueryPluginSpinButton, jQueryPluginSVG, jQueryContextMenu, jPicker].reduce(function (jq, func) {
+  return func(jq);
 }, jQuery);
 /*
 if (!$.loadingStylesheets) {
@@ -27846,107 +28760,136 @@ curConfig = {
   */
   allowedOrigins: []
 };
+/**
+ *
+ * @param {string} str SVG string
+ * @param {PlainObject} [opts={}]
+ * @param {boolean} [opts.noAlert]
+ * @throws {Error} Upon failure to load SVG
+ * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is
+ *   falsey, though only until after the `alert` is closed); rejects if SVG
+ *   loading fails and `noAlert` is truthy.
+ */
 
-function loadSvgString(str, callback) {
-  var success = svgCanvas.setSvgString(str) !== false;
-  callback = callback || $$b.noop;
-
-  if (success) {
-    callback(true); // eslint-disable-line standard/no-callback-literal
-  } else {
-    $$b.alert(uiStrings$1.notification.errorLoadingSVG, function () {
-      callback(false); // eslint-disable-line standard/no-callback-literal
-    });
-  }
+function loadSvgString(_x) {
+  return _loadSvgString.apply(this, arguments);
 }
 /**
  * @function module:SVGEditor~getImportLocale
- * @param {string} defaultLang
- * @param {string} defaultName
+ * @param {PlainObject} defaults
+ * @param {string} defaults.defaultLang
+ * @param {string} defaults.defaultName
  * @returns {module:SVGEditor~ImportLocale}
  */
 
 
+function _loadSvgString() {
+  _loadSvgString = _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee23(str) {
+    var _ref45,
+        noAlert,
+        success,
+        _args23 = arguments;
+
+    return regeneratorRuntime.wrap(function _callee23$(_context23) {
+      while (1) {
+        switch (_context23.prev = _context23.next) {
+          case 0:
+            _ref45 = _args23.length > 1 && _args23[1] !== undefined ? _args23[1] : {}, noAlert = _ref45.noAlert;
+            success = svgCanvas.setSvgString(str) !== false;
+
+            if (!success) {
+              _context23.next = 4;
+              break;
+            }
+
+            return _context23.abrupt("return");
+
+          case 4:
+            if (noAlert) {
+              _context23.next = 8;
+              break;
+            }
+
+            _context23.next = 7;
+            return $$b.alert(uiStrings$1.notification.errorLoadingSVG);
+
+          case 7:
+            return _context23.abrupt("return");
+
+          case 8:
+            throw new Error('Error loading SVG');
+
+          case 9:
+          case "end":
+            return _context23.stop();
+        }
+      }
+    }, _callee23, this);
+  }));
+  return _loadSvgString.apply(this, arguments);
+}
+
 function getImportLocale(_ref) {
   var defaultLang = _ref.defaultLang,
       defaultName = _ref.defaultName;
 
   /**
    * @function module:SVGEditor~ImportLocale
-   * @param {string} [name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
-   * @param {string} [lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
+   * @param {PlainObject} localeInfo
+   * @param {string} [localeInfo.name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
+   * @param {string} [localeInfo.lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
    * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}
    */
   return (
     /*#__PURE__*/
     function () {
-      var _importLocale = _asyncToGenerator(
+      var _importLocaleDefaulting = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee2() {
+      regeneratorRuntime.mark(function _callee() {
         var _ref2,
             _ref2$name,
             name,
             _ref2$lang,
             lang,
             importLocale,
-            _importLocale2,
-            _args2 = arguments;
+            _args = arguments;
 
-        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+        return regeneratorRuntime.wrap(function _callee$(_context) {
           while (1) {
-            switch (_context2.prev = _context2.next) {
+            switch (_context.prev = _context.next) {
               case 0:
-                _importLocale2 = function _ref4() {
-                  _importLocale2 = _asyncToGenerator(
-                  /*#__PURE__*/
-                  regeneratorRuntime.mark(function _callee(lang) {
-                    var url;
-                    return regeneratorRuntime.wrap(function _callee$(_context) {
-                      while (1) {
-                        switch (_context.prev = _context.next) {
-                          case 0:
-                            url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(lang, ".js");
-                            return _context.abrupt("return", importSetGlobalDefault(url, {
-                              global: "svgEditorExtensionLocale_".concat(name, "_").concat(lang)
-                            }));
-
-                          case 2:
-                          case "end":
-                            return _context.stop();
-                        }
-                      }
-                    }, _callee, this);
-                  }));
-                  return _importLocale2.apply(this, arguments);
+                importLocale = function _ref3(language) {
+                  var url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(language, ".js");
+                  return importSetGlobalDefault(url, {
+                    global: "svgEditorExtensionLocale_".concat(name, "_").concat(language)
+                  });
                 };
 
-                importLocale = function _ref3(_x) {
-                  return _importLocale2.apply(this, arguments);
-                };
-
-                _ref2 = _args2.length > 0 && _args2[0] !== undefined ? _args2[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
-                _context2.prev = 3;
-                _context2.next = 6;
+                _ref2 = _args.length > 0 && _args[0] !== undefined ? _args[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
+                _context.prev = 2;
+                _context.next = 5;
                 return importLocale(lang);
 
-              case 6:
-                return _context2.abrupt("return", _context2.sent);
+              case 5:
+                return _context.abrupt("return", _context.sent);
 
-              case 9:
-                _context2.prev = 9;
-                _context2.t0 = _context2["catch"](3);
-                return _context2.abrupt("return", importLocale('en'));
+              case 8:
+                _context.prev = 8;
+                _context.t0 = _context["catch"](2);
+                return _context.abrupt("return", importLocale('en'));
 
-              case 12:
+              case 11:
               case "end":
-                return _context2.stop();
+                return _context.stop();
             }
           }
-        }, _callee2, this, [[3, 9]]);
+        }, _callee, this, [[2, 8]]);
       }));
 
-      return function importLocale() {
-        return _importLocale.apply(this, arguments);
+      return function importLocaleDefaulting() {
+        return _importLocaleDefaulting.apply(this, arguments);
       };
     }()
   );
@@ -27959,7 +28902,7 @@ function getImportLocale(_ref) {
 * Store and retrieve preferences.
 * @param {string} key The preference name to be retrieved or set
 * @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.
-* @returns {string} If val is missing or falsey, the value of the previously stored preference will be returned.
+* @returns {string|undefined} If val is missing or falsey, the value of the previously stored preference will be returned.
 * @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?
 * @todo Review whether any remaining existing direct references to
 *  getting `curPrefs` can be changed to use `$.pref()` getting to ensure
@@ -27980,7 +28923,7 @@ $$b.pref = function (key, val) {
 
     editor.curPrefs = curPrefs; // Update exported value
 
-    return;
+    return undefined;
   }
 
   return key in curPrefs ? curPrefs[key] : defaultPrefs[key];
@@ -28010,13 +28953,13 @@ editor.setStrings = setStrings;
 */
 
 editor.loadContentAndPrefs = function () {
-  if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/))) {
+  if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/))) {
     return;
   } // LOAD CONTENT
 
 
   if (editor.storage && ( // Cookies do not have enough available memory to hold large documents
-  curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)store=prefsAndContent/))) {
+  curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)svgeditstorestore=prefsAndContent/))) {
     var name = 'svgedit-' + curConfig.canvasName;
     var cached = editor.storage.getItem(name);
 
@@ -28026,25 +28969,22 @@ editor.loadContentAndPrefs = function () {
   } // LOAD PREFS
 
 
-  for (var key in defaultPrefs) {
-    if (defaultPrefs.hasOwnProperty(key)) {
-      // It's our own config, so we don't need to iterate up the prototype chain
-      var storeKey = 'svg-edit-' + key;
+  Object.keys(defaultPrefs).forEach(function (key) {
+    var storeKey = 'svg-edit-' + key;
 
-      if (editor.storage) {
-        var val = editor.storage.getItem(storeKey);
+    if (editor.storage) {
+      var val = editor.storage.getItem(storeKey);
 
-        if (val) {
-          defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
-        }
-      } else if (window.widget) {
-        defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
-      } else {
-        var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
-        defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
+      if (val) {
+        defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
       }
+    } else if (window.widget) {
+      defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
+    } else {
+      var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
+      defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
     }
-  }
+  });
 };
 /**
 * Allows setting of preferences or configuration (including extensions).
@@ -28070,6 +29010,13 @@ editor.loadContentAndPrefs = function () {
 
 editor.setConfig = function (opts, cfgCfg) {
   cfgCfg = cfgCfg || {};
+  /**
+   *
+   * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj
+   * @param {string} key
+   * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}
+   * @returns {undefined}
+   */
 
   function extendOrAdd(cfgObj, key, val) {
     if (cfgObj[key] && _typeof(cfgObj[key]) === 'object') {
@@ -28080,10 +29027,10 @@ editor.setConfig = function (opts, cfgCfg) {
   }
 
   $$b.each(opts, function (key, val) {
-    if (opts.hasOwnProperty(key)) {
+    if ({}.hasOwnProperty.call(opts, key)) {
       // Only allow prefs defined in defaultPrefs
-      if (defaultPrefs.hasOwnProperty(key)) {
-        if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curPrefs.hasOwnProperty(key))) {
+      if ({}.hasOwnProperty.call(defaultPrefs, key)) {
+        if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curPrefs, key))) {
           return;
         }
 
@@ -28099,29 +29046,25 @@ editor.setConfig = function (opts, cfgCfg) {
 
         curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later
         // Only allow other curConfig if defined in defaultConfig
-      } else if (defaultConfig.hasOwnProperty(key)) {
-        if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curConfig.hasOwnProperty(key))) {
+      } else if ({}.hasOwnProperty.call(defaultConfig, key)) {
+        if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curConfig, key))) {
           return;
         } // Potentially overwriting of previously set config
 
 
-        if (curConfig.hasOwnProperty(key)) {
+        if ({}.hasOwnProperty.call(curConfig, key)) {
           if (cfgCfg.overwrite === false) {
             return;
           }
 
           extendOrAdd(curConfig, key, val);
+        } else if (cfgCfg.allowInitialUserOverride === true) {
+          extendOrAdd(defaultConfig, key, val);
+        } else if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
+          curConfig[key] = {};
+          $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
         } else {
-          if (cfgCfg.allowInitialUserOverride === true) {
-            extendOrAdd(defaultConfig, key, val);
-          } else {
-            if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
-              curConfig[key] = {};
-              $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
-            } else {
-              curConfig[key] = val;
-            }
-          }
+          curConfig[key] = val;
         }
       }
     }
@@ -28269,6 +29212,10 @@ editor.init = function () {
   $$b('#lang_select option').each(function () {
     goodLangs.push(this.value);
   });
+  /**
+   * Sets up current preferences based on defaults.
+   * @returns {undefined}
+   */
 
   function setupCurPrefs() {
     curPrefs = $$b.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set
@@ -28276,6 +29223,11 @@ editor.init = function () {
 
     editor.curPrefs = curPrefs;
   }
+  /**
+   * Sets up current config based on defaults.
+   * @returns {undefined}
+   */
+
 
   function setupCurConfig() {
     curConfig = $$b.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set
@@ -28380,7 +29332,9 @@ editor.init = function () {
     var icon = typeof iconId === 'string' ? $$b.getSvgIcon(iconId, true) : iconId.clone();
 
     if (!icon) {
-      console.log('NOTE: Icon image missing: ' + iconId);
+      // Todo: Investigate why this still occurs in some cases
+      console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console
+
       return;
     }
 
@@ -28398,48 +29352,53 @@ editor.init = function () {
   var extAndLocaleFunc =
   /*#__PURE__*/
   function () {
-    var _ref5 = _asyncToGenerator(
+    var _ref4 = _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee4() {
-      var _ref6, langParam, langData;
+    regeneratorRuntime.mark(function _callee3() {
+      var _ref5, langParam, langData, _uiStrings$common, ok, cancel;
 
-      return regeneratorRuntime.wrap(function _callee4$(_context4) {
+      return regeneratorRuntime.wrap(function _callee3$(_context3) {
         while (1) {
-          switch (_context4.prev = _context4.next) {
+          switch (_context3.prev = _context3.next) {
             case 0:
-              _context4.next = 2;
+              _context3.next = 2;
               return editor.putLocale(null, goodLangs, curConfig);
 
             case 2:
-              _ref6 = _context4.sent;
-              langParam = _ref6.langParam;
-              langData = _ref6.langData;
-              _context4.next = 7;
+              _ref5 = _context3.sent;
+              langParam = _ref5.langParam;
+              langData = _ref5.langData;
+              _context3.next = 7;
               return setLang(langParam, langData);
 
             case 7:
-              _context4.prev = 7;
-              _context4.next = 10;
+              _uiStrings$common = uiStrings$1.common, ok = _uiStrings$common.ok, cancel = _uiStrings$common.cancel;
+              jQueryPluginDBox($$b, {
+                ok: ok,
+                cancel: cancel
+              });
+              _context3.prev = 9;
+              _context3.next = 12;
               return Promise.all(curConfig.extensions.map(
               /*#__PURE__*/
               function () {
-                var _ref7 = _asyncToGenerator(
+                var _ref6 = _asyncToGenerator(
                 /*#__PURE__*/
-                regeneratorRuntime.mark(function _callee3(extname) {
+                regeneratorRuntime.mark(function _callee2(extname) {
                   var extName, url, imported, _imported$name, name, init$$1, importLocale;
 
-                  return regeneratorRuntime.wrap(function _callee3$(_context3) {
+                  return regeneratorRuntime.wrap(function _callee2$(_context2) {
                     while (1) {
-                      switch (_context3.prev = _context3.next) {
+                      switch (_context2.prev = _context2.next) {
                         case 0:
                           extName = extname.match(/^ext-(.+)\.js/);
 
                           if (extName) {
-                            _context3.next = 3;
+                            _context2.next = 3;
                             break;
                           }
 
-                          return _context3.abrupt("return");
+                          return _context2.abrupt("return", undefined);
 
                         case 3:
                           url = curConfig.extPath + extname; // Todo: Replace this with `return import(url);` when
@@ -28452,41 +29411,48 @@ editor.init = function () {
                            * @property {module:svgcanvas.ExtensionInitCallback} [init]
                            */
 
-                          _context3.prev = 4;
-                          _context3.next = 7;
+                          _context2.prev = 4;
+                          _context2.next = 7;
                           return importSetGlobalDefault(url, {
                             global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')
                           });
 
                         case 7:
-                          imported = _context3.sent;
+                          imported = _context2.sent;
                           _imported$name = imported.name, name = _imported$name === void 0 ? extName[1] : _imported$name, init$$1 = imported.init;
                           importLocale = getImportLocale({
                             defaultLang: langParam,
                             defaultName: name
                           });
-                          return _context3.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), importLocale));
+                          return _context2.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), {
+                            $: $$b,
+                            importLocale: importLocale
+                          }));
 
                         case 13:
-                          _context3.prev = 13;
-                          _context3.t0 = _context3["catch"](4);
-                          console.log(_context3.t0);
-                          console.error('Extension failed to load: ' + extname + '; ' + _context3.t0);
+                          _context2.prev = 13;
+                          _context2.t0 = _context2["catch"](4);
+                          // Todo: Add config to alert any errors
+                          console.log(_context2.t0); // eslint-disable-line no-console
 
-                        case 17:
+                          console.error('Extension failed to load: ' + extname + '; ' + _context2.t0); // eslint-disable-line no-console
+
+                          return _context2.abrupt("return", undefined);
+
+                        case 18:
                         case "end":
-                          return _context3.stop();
+                          return _context2.stop();
                       }
                     }
-                  }, _callee3, this, [[4, 13]]);
+                  }, _callee2, this, [[4, 13]]);
                 }));
 
                 return function (_x2) {
-                  return _ref7.apply(this, arguments);
+                  return _ref6.apply(this, arguments);
                 };
               }()));
 
-            case 10:
+            case 12:
               svgCanvas.bind('extensions_added',
               /**
               * @param {external:Window} win
@@ -28516,30 +29482,35 @@ editor.init = function () {
                 });
               });
               svgCanvas.call('extensions_added');
-              _context4.next = 17;
+              _context3.next = 19;
               break;
 
-            case 14:
-              _context4.prev = 14;
-              _context4.t0 = _context4["catch"](7);
-              console.log(_context4.t0);
+            case 16:
+              _context3.prev = 16;
+              _context3.t0 = _context3["catch"](9);
+              // Todo: Report errors through the UI
+              console.log(_context3.t0); // eslint-disable-line no-console
 
-            case 17:
+            case 19:
             case "end":
-              return _context4.stop();
+              return _context3.stop();
           }
         }
-      }, _callee4, this, [[7, 14]]);
+      }, _callee3, this, [[9, 16]]);
     }));
 
     return function extAndLocaleFunc() {
-      return _ref5.apply(this, arguments);
+      return _ref4.apply(this, arguments);
     };
   }();
 
   var stateObj = {
     tool_scale: editor.tool_scale
   };
+  /**
+  *
+  * @returns {undefined}
+  */
 
   var setFlyoutPositions = function setFlyoutPositions() {
     $$b('.tools_flyout').each(function () {
@@ -28556,6 +29527,10 @@ editor.init = function () {
       });
     });
   };
+  /**
+  * @type {string}
+  */
+
 
   var uaPrefix = function () {
     var regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
@@ -28580,6 +29555,12 @@ editor.init = function () {
 
     return '';
   }();
+  /**
+  * @param {external:jQuery} elems
+  * @param {Float} scale
+  * @returns {undefined}
+  */
+
 
   var scaleElements = function scaleElements(elems, scale) {
     // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused
@@ -28595,8 +29576,8 @@ editor.init = function () {
         var s = sides[i];
         var cur = el.data('orig_margin-' + s);
 
-        if (cur == null) {
-          cur = parseInt(el.css('margin-' + s), 10); // Cache the original margin
+        if (isNullish(cur)) {
+          cur = parseInt(el.css('margin-' + s)); // Cache the original margin
 
           el.data('orig_margin-' + s, cur);
         }
@@ -28992,95 +29973,122 @@ editor.init = function () {
       '.stroke_tool div div .svg_icon': 20,
       '#tools_bottom label .svg_icon': 18
     },
-    callback: function callback(icons) {
-      $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
-        $$b(this).parent().prepend(this);
-      });
-      var tleft = $$b('#tools_left');
-      var minHeight;
+    callback: function () {
+      var _callback = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee4(icons) {
+        var tleft, minHeight, size, getStylesheetPriority, stylesheets, idx, _stylesheets;
 
-      if (tleft.length) {
-        minHeight = tleft.offset().top + tleft.outerHeight();
-      }
+        return regeneratorRuntime.wrap(function _callee4$(_context4) {
+          while (1) {
+            switch (_context4.prev = _context4.next) {
+              case 0:
+                getStylesheetPriority = function _ref8(stylesheetFile) {
+                  switch (stylesheetFile) {
+                    case 'jgraduate/css/jPicker.css':
+                      return 1;
 
-      var size = $$b.pref('iconsize');
-      editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+                    case 'jgraduate/css/jGraduate.css':
+                      return 2;
 
-      $$b('.tools_flyout').each(function () {
-        var shower = $$b('#' + this.id + '_show');
-        var sel = shower.attr('data-curopt'); // Check if there's an icon here
+                    case 'svg-editor.css':
+                      return 3;
 
-        if (!shower.children('svg, img').length) {
-          var clone = $$b(sel).children().clone();
+                    case 'spinbtn/jQuery.SpinButton.css':
+                      return 4;
 
-          if (clone.length) {
-            clone[0].removeAttribute('style'); // Needed for Opera
+                    default:
+                      return Infinity;
+                  }
+                };
 
-            shower.append(clone);
+                $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
+                  $$b(this).parent().prepend(this);
+                });
+                tleft = $$b('#tools_left');
+
+                if (tleft.length) {
+                  minHeight = tleft.offset().top + tleft.outerHeight();
+                }
+
+                size = $$b.pref('iconsize');
+                editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+
+                $$b('.tools_flyout').each(function () {
+                  var shower = $$b('#' + this.id + '_show');
+                  var sel = shower.attr('data-curopt'); // Check if there's an icon here
+
+                  if (!shower.children('svg, img').length) {
+                    var clone = $$b(sel).children().clone();
+
+                    if (clone.length) {
+                      clone[0].removeAttribute('style'); // Needed for Opera
+
+                      shower.append(clone);
+                    }
+                  }
+                });
+                /**
+                 * Since stylesheets may be added out of order, we indicate the desired order
+                 *   for defaults and others after them (in an indeterminate order).
+                 * @param {string} stylesheetFile
+                 * @returns {Integer|PositiveInfinity}
+                 */
+
+                stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
+                  var priorityA = getStylesheetPriority(a);
+                  var priorityB = getStylesheetPriority(b);
+
+                  if (priorityA === priorityB) {
+                    return 0;
+                  }
+
+                  return priorityA > priorityB;
+                });
+
+                if (curConfig.stylesheets.length) {
+                  // Ensure a copy with unique items
+                  stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
+                  idx = stylesheets.indexOf('@default');
+
+                  if (idx > -1) {
+                    (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
+                  }
+                }
+
+                _context4.next = 11;
+                return loadStylesheets(stylesheets, {
+                  acceptErrors: function acceptErrors(_ref7) {
+                    var stylesheetURL = _ref7.stylesheetURL,
+                        reject = _ref7.reject,
+                        resolve = _ref7.resolve;
+
+                    if ($$b.loadingStylesheets.includes(stylesheetURL)) {
+                      reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
+                      return;
+                    }
+
+                    resolve();
+                  }
+                });
+
+              case 11:
+                $$b('#svg_container')[0].style.visibility = 'visible';
+                _context4.next = 14;
+                return editor.runCallbacks();
+
+              case 14:
+              case "end":
+                return _context4.stop();
+            }
           }
-        }
-      });
+        }, _callee4, this);
+      }));
 
-      function getStylesheetPriority(stylesheet) {
-        switch (stylesheet) {
-          case 'jgraduate/css/jPicker.css':
-            return 1;
-
-          case 'jgraduate/css/jGraduate.css':
-            return 2;
-
-          case 'svg-editor.css':
-            return 3;
-
-          case 'spinbtn/jQuery.SpinButton.css':
-            return 4;
-
-          default:
-            return Infinity;
-        }
-      }
-
-      var stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
-        var priorityA = getStylesheetPriority(a);
-        var priorityB = getStylesheetPriority(b);
-
-        if (priorityA === priorityB) {
-          return 0;
-        }
-
-        return priorityA > priorityB;
-      });
-
-      if (curConfig.stylesheets.length) {
-        // Ensure a copy with unique items
-        stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
-        var idx = stylesheets.indexOf('@default');
-
-        if (idx > -1) {
-          var _stylesheets;
-
-          (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
-        }
-      }
-
-      loadStylesheets(stylesheets, {
-        acceptErrors: function acceptErrors(_ref8) {
-          var stylesheetURL = _ref8.stylesheetURL,
-              reject = _ref8.reject,
-              resolve = _ref8.resolve;
-
-          if ($$b.loadingStylesheets.includes(stylesheetURL)) {
-            reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
-            return;
-          }
-
-          resolve();
-        }
-      }).then(function () {
-        $$b('#svg_container')[0].style.visibility = 'visible';
-        editor.runCallbacks();
-      });
-    }
+      return function callback(_x3) {
+        return _callback.apply(this, arguments);
+      };
+    }()
   });
   /**
   * @name module:SVGEditor.canvas
@@ -29133,125 +30141,12 @@ editor.init = function () {
         w.document.documentElement.dispatchEvent(svgEditorReadyEvent);
       } catch (e) {}
     }
-  })(); // This sets up alternative dialog boxes. They mostly work the same way as
-  // their UI counterparts, expect instead of returning the result, a callback
-  // needs to be included that returns the result as its first parameter.
-  // In the future we may want to add additional types of dialog boxes, since
-  // they should be easy to handle this way.
-
-
-  (function () {
-    $$b('#dialog_container').draggable({
-      cancel: '#dialog_content, #dialog_buttons *',
-      containment: 'window'
-    }).css('position', 'absolute');
-
-    var box = $$b('#dialog_box'),
-        btnHolder = $$b('#dialog_buttons'),
-        dialogContent = $$b('#dialog_content'),
-        dbox = function dbox(type, msg, callback, defaultVal, opts, changeCb, checkbox) {
-      dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
-      btnHolder.empty();
-      var ok = $$b('<input type="button" value="' + uiStrings$1.common.ok + '">').appendTo(btnHolder);
-
-      if (type !== 'alert') {
-        $$b('<input type="button" value="' + uiStrings$1.common.cancel + '">').appendTo(btnHolder).click(function () {
-          box.hide();
-
-          if (callback) {
-            callback(false); // eslint-disable-line standard/no-callback-literal
-          }
-        });
-      }
-
-      var ctrl, chkbx;
-
-      if (type === 'prompt') {
-        ctrl = $$b('<input type="text">').prependTo(btnHolder);
-        ctrl.val(defaultVal || '');
-        ctrl.bind('keydown', 'return', function () {
-          ok.click();
-        });
-      } else if (type === 'select') {
-        var div = $$b('<div style="text-align:center;">');
-        ctrl = $$b('<select>').appendTo(div);
-
-        if (checkbox) {
-          var label = $$b('<label>').text(checkbox.label);
-          chkbx = $$b('<input type="checkbox">').appendTo(label);
-          chkbx.val(checkbox.value);
-
-          if (checkbox.tooltip) {
-            label.attr('title', checkbox.tooltip);
-          }
-
-          chkbx.prop('checked', !!checkbox.checked);
-          div.append($$b('<div>').append(label));
-        }
-
-        $$b.each(opts || [], function (opt, val) {
-          if (_typeof(val) === 'object') {
-            ctrl.append($$b('<option>').val(val.value).html(val.text));
-          } else {
-            ctrl.append($$b('<option>').html(val));
-          }
-        });
-        dialogContent.append(div);
-
-        if (defaultVal) {
-          ctrl.val(defaultVal);
-        }
-
-        if (changeCb) {
-          ctrl.bind('change', 'return', changeCb);
-        }
-
-        ctrl.bind('keydown', 'return', function () {
-          ok.click();
-        });
-      } else if (type === 'process') {
-        ok.hide();
-      }
-
-      box.show();
-      ok.click(function () {
-        box.hide();
-        var resp = type === 'prompt' || type === 'select' ? ctrl.val() : true;
-
-        if (callback) {
-          if (chkbx) {
-            callback(resp, chkbx.prop('checked'));
-          } else {
-            callback(resp);
-          }
-        }
-      }).focus();
-
-      if (type === 'prompt' || type === 'select') {
-        ctrl.focus();
-      }
-    };
-
-    $$b.alert = function (msg, cb) {
-      dbox('alert', msg, cb);
-    };
-
-    $$b.confirm = function (msg, cb) {
-      dbox('confirm', msg, cb);
-    };
-
-    $$b.process_cancel = function (msg, cb) {
-      dbox('process', msg, cb);
-    };
-
-    $$b.prompt = function (msg, txt, cb) {
-      dbox('prompt', msg, cb, txt);
-    };
-
-    $$b.select = function (msg, opts, cb, changeCb, txt, checkbox) {
-      dbox('select', msg, cb, txt, opts, changeCb, checkbox);
-    };
   })();
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var setSelectMode = function setSelectMode() {
     var curr = $$b('.tool_button_current');
@@ -29277,8 +30172,13 @@ editor.init = function () {
     rIntervals.push(i);
     rIntervals.push(2 * i);
     rIntervals.push(5 * i);
-  } // This function highlights the layer passed in (by fading out the other layers)
-  // if no layer is passed in, this function restores the other layers
+  }
+  /**
+   * This function highlights the layer passed in (by fading out the other layers).
+   * If no layer is passed in, this function restores the other layers
+   * @param {string} [layerNameToHighlight]
+   * @returns {undefined}
+  */
 
 
   var toggleHighlightLayer = function toggleHighlightLayer(layerNameToHighlight) {
@@ -29291,17 +30191,22 @@ editor.init = function () {
     }
 
     if (layerNameToHighlight) {
-      for (i = 0; i < numLayers; ++i) {
-        if (curNames[i] !== layerNameToHighlight) {
-          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);
+      curNames.forEach(function (curName) {
+        if (curName !== layerNameToHighlight) {
+          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);
         }
-      }
+      });
     } else {
-      for (i = 0; i < numLayers; ++i) {
-        svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);
-      }
+      curNames.forEach(function (curName) {
+        svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);
+      });
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var populateLayers = function populateLayers() {
     svgCanvas.clearSelection();
@@ -29358,6 +30263,11 @@ editor.init = function () {
 
   var editingsource = false;
   var origSource = '';
+  /**
+  * @param {Event} [e] Not used.
+  * @param {boolean} forSaving
+  * @returns {undefined}
+  */
 
   var showSourceEditor = function showSourceEditor(e, forSaving) {
     if (editingsource) {
@@ -29366,7 +30276,7 @@ editor.init = function () {
 
     editingsource = true;
     origSource = svgCanvas.getSvgString();
-    $$b('#save_output_btns').toggle(!!forSaving);
+    $$b('#save_output_btns').toggle(Boolean(forSaving));
     $$b('#tool_source_back').toggle(!forSaving);
     $$b('#svg_source_textarea').val(origSource);
     $$b('#svg_source_editor').fadeIn();
@@ -29375,6 +30285,11 @@ editor.init = function () {
 
   var selectedElement = null;
   var multiselected = false;
+  /**
+  * @param {boolean} editmode
+  * @param {module:svgcanvas.SvgCanvas#event:selected} elems
+  * @returns {undefined}
+  */
 
   var togglePathEditMode = function togglePathEditMode(editmode, elems) {
     $$b('#path_node_panel').toggle(editmode);
@@ -29447,7 +30362,7 @@ editor.init = function () {
       }
 
       if (done !== 'part') {
-        alert(note);
+        $$b.alert(note);
       }
     }
   };
@@ -29465,6 +30380,7 @@ editor.init = function () {
     exportWindow = window.open(blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one
 
     if (!exportWindow || exportWindow.closed) {
+      /* await */
       $$b.alert(uiStrings$1.notification.popupWindowBlocked);
       return;
     }
@@ -29486,6 +30402,11 @@ editor.init = function () {
       exportWindow.alert(note);
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var operaRepaint = function operaRepaint() {
     // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
@@ -29495,12 +30416,21 @@ editor.init = function () {
 
     $$b('<p/>').hide().appendTo('body').remove();
   };
+  /**
+   *
+   * @param {Element} opt
+   * @param {boolean} changeElem
+   * @returns {undefined}
+   */
+
 
   function setStrokeOpt(opt, changeElem) {
     var id = opt.id;
     var bits = id.split('_');
-    var pre = bits[0];
-    var val = bits[1];
+
+    var _bits = _slicedToArray(bits, 2),
+        pre = _bits[0],
+        val = _bits[1];
 
     if (changeElem) {
       svgCanvas.setStrokeAttr('stroke-' + pre, val);
@@ -29589,6 +30519,13 @@ editor.init = function () {
       $$b('#change_image_url').hide();
     }
   };
+  /**
+   *
+   * @param {string} color
+   * @param {string} url
+   * @returns {undefined}
+   */
+
 
   function setBackground(color, url) {
     // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }
@@ -29597,27 +30534,73 @@ editor.init = function () {
 
     svgCanvas.setBackground(color, url);
   }
+  /**
+   * @param {PlainObject} [opts={}]
+   * @param {boolean} [opts.cancelDeletes=false}]
+   * @returns {Promise} Resolves to `undefined`
+   */
+
 
   function promptImgURL() {
-    var _ref9 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
-        _ref9$cancelDeletes = _ref9.cancelDeletes,
-        cancelDeletes = _ref9$cancelDeletes === void 0 ? false : _ref9$cancelDeletes;
+    return _promptImgURL.apply(this, arguments);
+  }
+  /**
+  * @param {Element} elem
+  * @returns {undefined}
+  */
 
-    var curhref = svgCanvas.getHref(selectedElement);
-    curhref = curhref.startsWith('data:') ? '' : curhref;
-    $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref, function (url) {
-      if (url) {
-        setImageURL(url);
-      } else if (cancelDeletes) {
-        svgCanvas.deleteSelectedElements();
-      }
-    });
+
+  function _promptImgURL() {
+    _promptImgURL = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee18() {
+      var _ref31,
+          _ref31$cancelDeletes,
+          cancelDeletes,
+          curhref,
+          url,
+          _args18 = arguments;
+
+      return regeneratorRuntime.wrap(function _callee18$(_context18) {
+        while (1) {
+          switch (_context18.prev = _context18.next) {
+            case 0:
+              _ref31 = _args18.length > 0 && _args18[0] !== undefined ? _args18[0] : {}, _ref31$cancelDeletes = _ref31.cancelDeletes, cancelDeletes = _ref31$cancelDeletes === void 0 ? false : _ref31$cancelDeletes;
+              curhref = svgCanvas.getHref(selectedElement);
+              curhref = curhref.startsWith('data:') ? '' : curhref;
+              _context18.next = 5;
+              return $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref);
+
+            case 5:
+              url = _context18.sent;
+
+              if (url) {
+                setImageURL(url);
+              } else if (cancelDeletes) {
+                svgCanvas.deleteSelectedElements();
+              }
+
+            case 7:
+            case "end":
+              return _context18.stop();
+          }
+        }
+      }, _callee18, this);
+    }));
+    return _promptImgURL.apply(this, arguments);
   }
 
   var setInputWidth = function setInputWidth(elem) {
     var w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
     $$b(elem).width(w);
   };
+  /**
+   *
+   * @param {HTMLDivElement} [scanvas]
+   * @param {Float} [zoom]
+   * @returns {undefined}
+   */
+
 
   function updateRulers(scanvas, zoom) {
     if (!zoom) {
@@ -29659,7 +30642,7 @@ editor.init = function () {
       $hcanv.siblings().remove(); // Create multiple canvases when necessary (due to browser limits)
 
       if (rulerLen >= limit) {
-        ctxArrNum = parseInt(rulerLen / limit, 10) + 1;
+        ctxArrNum = parseInt(rulerLen / limit) + 1;
         ctxArr = [];
         ctxArr[0] = ctx;
         var copy = void 0;
@@ -29813,8 +30796,9 @@ editor.init = function () {
     var newCanX = w / 2;
     var offset = svgCanvas.updateCanvas(w, h);
     var ratio = newCanX / oldCanX;
-    var scrollX = w / 2 - wOrig / 2;
-    var scrollY = h / 2 - hOrig / 2;
+    var scrollX = w / 2 - wOrig / 2; // eslint-disable-line no-shadow
+
+    var scrollY = h / 2 - hOrig / 2; // eslint-disable-line no-shadow
 
     if (!newCtr) {
       var oldDistX = oldCtr.x - oldCanX;
@@ -29862,44 +30846,37 @@ editor.init = function () {
 
 
   var updateToolButtonState = function updateToolButtonState() {
-    var index, button;
     var bNoFill = svgCanvas.getColor('fill') === 'none';
     var bNoStroke = svgCanvas.getColor('stroke') === 'none';
     var buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];
     var buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];
 
     if (bNoStroke) {
-      for (index in buttonsNeedingStroke) {
-        button = buttonsNeedingStroke[index];
-
-        if ($$b(button).hasClass('tool_button_current')) {
+      buttonsNeedingStroke.forEach(function (btn) {
+        if ($$b(btn).hasClass('tool_button_current')) {
           clickSelect();
         }
 
-        $$b(button).addClass('disabled');
-      }
+        $$b(btn).addClass('disabled');
+      });
     } else {
-      for (index in buttonsNeedingStroke) {
-        button = buttonsNeedingStroke[index];
-        $$b(button).removeClass('disabled');
-      }
+      buttonsNeedingStroke.forEach(function (btn) {
+        $$b(btn).removeClass('disabled');
+      });
     }
 
     if (bNoStroke && bNoFill) {
-      for (index in buttonsNeedingFillAndStroke) {
-        button = buttonsNeedingFillAndStroke[index];
-
-        if ($$b(button).hasClass('tool_button_current')) {
+      buttonsNeedingFillAndStroke.forEach(function (btn) {
+        if ($$b(btn).hasClass('tool_button_current')) {
           clickSelect();
         }
 
-        $$b(button).addClass('disabled');
-      }
+        $$b(btn).addClass('disabled');
+      });
     } else {
-      for (index in buttonsNeedingFillAndStroke) {
-        button = buttonsNeedingFillAndStroke[index];
-        $$b(button).removeClass('disabled');
-      }
+      buttonsNeedingFillAndStroke.forEach(function (btn) {
+        $$b(btn).removeClass('disabled');
+      });
     }
 
     svgCanvas.runExtensions('toolButtonStateUpdate',
@@ -29920,14 +30897,19 @@ editor.init = function () {
       shower.toggleClass('disabled', !hasEnabled);
     });
     operaRepaint();
-  }; // Updates the toolbar (colors, opacity, etc) based on the selected element
-  // This function also updates the opacity and id elements that are in the context panel
+  };
+  /**
+  * Updates the toolbar (colors, opacity, etc) based on the selected element.
+  * This function also updates the opacity and id elements that are in the
+  * context panel.
+  * @returns {undefined}
+  */
 
 
   var updateToolbar = function updateToolbar() {
     var i, len;
 
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       switch (selectedElement.tagName) {
         case 'use':
         case 'image':
@@ -29936,47 +30918,50 @@ editor.init = function () {
 
         case 'g':
         case 'a':
-          // Look for common styles
-          var childs = selectedElement.getElementsByTagName('*');
-          var gWidth = null;
+          {
+            // Look for common styles
+            var childs = selectedElement.getElementsByTagName('*');
+            var gWidth = null;
 
-          for (i = 0, len = childs.length; i < len; i++) {
-            var swidth = childs[i].getAttribute('stroke-width');
+            for (i = 0, len = childs.length; i < len; i++) {
+              var swidth = childs[i].getAttribute('stroke-width');
 
-            if (i === 0) {
-              gWidth = swidth;
-            } else if (gWidth !== swidth) {
-              gWidth = null;
+              if (i === 0) {
+                gWidth = swidth;
+              } else if (gWidth !== swidth) {
+                gWidth = null;
+              }
             }
-          }
 
-          $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
-          paintBox.fill.update(true);
-          paintBox.stroke.update(true);
-          break;
+            $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
+            paintBox.fill.update(true);
+            paintBox.stroke.update(true);
+            break;
+          }
 
         default:
-          paintBox.fill.update(true);
-          paintBox.stroke.update(true);
-          $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
-          $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
-          var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
+          {
+            paintBox.fill.update(true);
+            paintBox.stroke.update(true);
+            $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
+            $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
+            var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
 
-          if ($$b('#linejoin_' + attr).length) {
-            setStrokeOpt($$b('#linejoin_' + attr)[0]);
+            if ($$b('#linejoin_' + attr).length) {
+              setStrokeOpt($$b('#linejoin_' + attr)[0]);
+            }
+
+            attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
+
+            if ($$b('#linecap_' + attr).length) {
+              setStrokeOpt($$b('#linecap_' + attr)[0]);
+            }
           }
-
-          attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
-
-          if ($$b('#linecap_' + attr).length) {
-            setStrokeOpt($$b('#linecap_' + attr)[0]);
-          }
-
       }
     } // All elements including image and group have opacity
 
 
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       var opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;
       $$b('#group_opacity').val(opacPerc);
       $$b('#opac_slider').slider('option', 'value', opacPerc);
@@ -29985,13 +30970,17 @@ editor.init = function () {
     }
 
     updateToolButtonState();
-  }; // updates the context panel tools based on the selected element
+  };
+  /**
+  * Updates the context panel tools based on the selected element.
+  * @returns {undefined}
+  */
 
 
   var updateContextPanel = function updateContextPanel() {
     var elem = selectedElement; // If element has just been deleted, consider it null
 
-    if (elem != null && !elem.parentNode) {
+    if (!isNullish(elem) && !elem.parentNode) {
       elem = null;
     }
 
@@ -30003,7 +30992,7 @@ editor.init = function () {
     var menuItems = $$b('#cmenu_canvas li');
     $$b('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' + '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' + ' #use_panel, #a_panel').hide();
 
-    if (elem != null) {
+    if (!isNullish(elem)) {
       var elname = elem.nodeName; // If this is a link with no transform and one child, pretend
       // its child is selected
       // if (elname === 'a') { // && !$(elem).attr('transform')) {
@@ -30020,6 +31009,7 @@ editor.init = function () {
         if (elname === 'image' && svgCanvas.getMode() === 'image') {
           // Prompt for URL if not a data URL
           if (!svgCanvas.getHref(elem).startsWith('data:')) {
+            /* await */
             promptImgURL({
               cancelDeletes: true
             });
@@ -30186,7 +31176,7 @@ editor.init = function () {
       }
 
       menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');
-      menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (elem != null)
+      menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (!Utils.isNullish(elem))
     } else if (multiselected) {
       $$b('#multiselected_panel').show();
       menuItems.enableContextMenuItems('#group').disableContextMenuItems('#ungroup');
@@ -30208,6 +31198,11 @@ editor.init = function () {
       $$b('#selLayerNames').attr('disabled', 'disabled');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var updateWireFrame = function updateWireFrame() {
     // Test support
@@ -30220,6 +31215,10 @@ editor.init = function () {
   };
 
   var curContext = '';
+  /**
+  * @param {string} [title=svgCanvas.getDocumentTitle()]
+  * @returns {undefined}
+  */
 
   var updateTitle = function updateTitle(title) {
     title = title || svgCanvas.getDocumentTitle();
@@ -30250,17 +31249,17 @@ editor.init = function () {
 
     var isNode = mode === 'pathedit'; // if elems[1] is present, then we have more than one element
 
-    selectedElement = elems.length === 1 || elems[1] == null ? elems[0] : null;
-    multiselected = elems.length >= 2 && elems[1] != null;
+    selectedElement = elems.length === 1 || isNullish(elems[1]) ? elems[0] : null;
+    multiselected = elems.length >= 2 && !isNullish(elems[1]);
 
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       // unless we're already in always set the mode of the editor to select because
       // upon creation of a text element the editor is switched into
       // select mode and this event fires - we need our UI to be in sync
       if (!isNode) {
         updateToolbar();
       }
-    } // if (elem != null)
+    } // if (!Utils.isNullish(elem))
     // Deal with pathedit mode
 
 
@@ -30293,19 +31292,21 @@ editor.init = function () {
       return;
     }
 
-    multiselected = elems.length >= 2 && elems[1] != null; // Only updating fields for single elements for now
+    multiselected = elems.length >= 2 && !isNullish(elems[1]); // Only updating fields for single elements for now
 
     if (!multiselected) {
       switch (mode) {
         case 'rotate':
-          var ang = svgCanvas.getRotationAngle(elem);
-          $$b('#angle').val(ang);
-          $$b('#tool_reorient').toggleClass('disabled', ang === 0);
-          break;
-        // TODO: Update values that change on move/resize, etc
-        // case 'select':
-        // case 'resize':
-        //   break;
+          {
+            var ang = svgCanvas.getRotationAngle(elem);
+            $$b('#angle').val(ang);
+            $$b('#tool_reorient').toggleClass('disabled', ang === 0);
+            break; // TODO: Update values that change on move/resize, etc
+            // } case 'select': {
+            // } case 'resize': {
+            //   break;
+            // }
+          }
       }
     }
 
@@ -30354,7 +31355,7 @@ editor.init = function () {
         } // Update selectedElement if element is no longer part of the image.
         // This occurs for the text elements in Firefox
 
-      } else if (elem && selectedElement && selectedElement.parentNode == null) {
+      } else if (elem && selectedElement && isNullish(selectedElement.parentNode)) {
         // || elem && elem.tagName == "path" && !multiselected) { // This was added in r1430, but not sure why
         selectedElement = elem;
       }
@@ -30448,6 +31449,10 @@ editor.init = function () {
 
     zoomDone();
   };
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
+
 
   var changeZoom = function changeZoom(ctl) {
     var zoomlevel = ctl.value / 100;
@@ -30510,9 +31515,13 @@ editor.init = function () {
       curContext = null;
     }
 
-    $$b('#cur_context_panel').toggle(!!context).html(linkStr);
+    $$b('#cur_context_panel').toggle(Boolean(context)).html(linkStr);
     updateTitle();
-  }; // Makes sure the current selected paint is available to work with
+  };
+  /**
+  * Makes sure the current selected paint is available to work with.
+  * @returns {undefined}
+  */
 
 
   var prepPaints = function prepPaints() {
@@ -30521,6 +31530,10 @@ editor.init = function () {
   };
 
   var flyoutFuncs = {};
+  /**
+  *
+  * @returns {undefined}
+  */
 
   var setFlyoutTitles = function setFlyoutTitles() {
     $$b('.tools_flyout').each(function () {
@@ -30539,7 +31552,7 @@ editor.init = function () {
 
   var allHolders = {};
   /**
-   * @param {GenericObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
+   * @param {PlainObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
    * @returns {undefined}
    */
 
@@ -30562,10 +31575,10 @@ editor.init = function () {
         // Get this button's options
         var idSel = '#' + this.getAttribute('id');
 
-        var _Object$entries$find = Object.entries(btnOpts).find(function (_ref10) {
-          var _ref11 = _slicedToArray(_ref10, 2),
-              i = _ref11[0],
-              sel = _ref11[1].sel;
+        var _Object$entries$find = Object.entries(btnOpts).find(function (_ref9) {
+          var _ref10 = _slicedToArray(_ref9, 2),
+              _ = _ref10[0],
+              sel = _ref10[1].sel;
 
           return sel === idSel;
         }),
@@ -30592,22 +31605,22 @@ editor.init = function () {
           if (ev.type === 'keydown') {
             var flyoutIsSelected = $$b(options.parent + '_show').hasClass('tool_button_current');
             var currentOperation = $$b(options.parent + '_show').attr('data-curopt');
-            Object.entries(holders[opts.parent]).some(function (_ref12) {
-              var _ref13 = _slicedToArray(_ref12, 2),
-                  i = _ref13[0],
-                  tool = _ref13[1];
+            Object.entries(holders[opts.parent]).some(function (_ref11) {
+              var _ref12 = _slicedToArray(_ref11, 2),
+                  j = _ref12[0],
+                  tool = _ref12[1];
 
               if (tool.sel !== currentOperation) {
-                return;
+                return false;
               }
 
               if (!ev.shiftKey || !flyoutIsSelected) {
                 options = tool;
               } else {
                 // If flyout is selected, allow shift key to iterate through subitems
-                i = parseInt(i, 10); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
+                j = parseInt(j); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
 
-                options = allHolders[opts.parent][i + 1] || holders[opts.parent][0];
+                options = allHolders[opts.parent][j + 1] || holders[opts.parent][0];
               }
 
               return true;
@@ -30634,6 +31647,8 @@ editor.init = function () {
           icon[0].setAttribute('height', shower.height());
           shower.children(':not(.flyout_arrow_horiz)').remove();
           shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode
+
+          return true;
         };
 
         $$b(this).mouseup(flyoutAction);
@@ -30641,6 +31656,8 @@ editor.init = function () {
         if (opts.key) {
           $$b(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);
         }
+
+        return true;
       });
 
       if (def) {
@@ -30675,6 +31692,7 @@ editor.init = function () {
           holder.data('shown_popop', true);
         }, time);
         evt.preventDefault();
+        return true;
       }).mouseup(function (evt) {
         clearTimeout(timer);
         var opt = $$b(this).attr('data-curopt'); // Is library and popped up, so do nothing
@@ -30692,6 +31710,12 @@ editor.init = function () {
     setFlyoutTitles();
     setFlyoutPositions();
   };
+  /**
+  * @param {string} id
+  * @param {external:jQuery} child
+  * @returns {undefined}
+  */
+
 
   var makeFlyoutHolder = function makeFlyoutHolder(id, child) {
     var div = $$b('<div>', {
@@ -30699,16 +31723,27 @@ editor.init = function () {
       id: id
     }).appendTo('#svg_editor').append(child);
     return div;
-  }; // TODO: Combine this with addDropDown or find other way to optimize
+  };
+  /**
+  * @param {string} elemSel
+  * @param {string} listSel
+  * @param {external:jQuery.Function} callback
+  * @param {PlainObject} opts
+  * @param {boolean} opts.dropUp
+  * @param {boolean} opts.seticon
+  * @param {boolean} opts.multiclick
+  * @todo Combine this with `addDropDown` or find other way to optimize.
+  * @returns {undefined}
+  */
 
 
-  var addAltDropDown = function addAltDropDown(elem, list, callback, opts) {
-    var button = $$b(elem);
+  var addAltDropDown = function addAltDropDown(elemSel, listSel, callback, opts) {
+    var button = $$b(elemSel);
     var dropUp = opts.dropUp;
-    list = $$b(list);
+    var list = $$b(listSel);
 
     if (dropUp) {
-      $$b(elem).addClass('dropup');
+      $$b(elemSel).addClass('dropup');
     }
 
     list.find('li').bind('mouseup', function () {
@@ -30717,7 +31752,11 @@ editor.init = function () {
         $$b(this).addClass('current').siblings().removeClass('current');
       }
 
-      callback.apply(this, arguments);
+      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+        args[_key] = arguments[_key];
+      }
+
+      callback.apply.apply(callback, [this].concat(args));
     });
     var onButton = false;
     $$b(window).mouseup(function (evt) {
@@ -30776,13 +31815,13 @@ editor.init = function () {
    * @param {external:Window} win
    * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext
    * @listens module:svgcanvas.SvgCanvas#event:extension_added
-   * @returns {Promise} Resolves to `undefined`
+   * @returns {Promise|undefined} Resolves to `undefined`
    */
 
   var extAdded =
   /*#__PURE__*/
   function () {
-    var _ref14 = _asyncToGenerator(
+    var _ref13 = _asyncToGenerator(
     /*#__PURE__*/
     regeneratorRuntime.mark(function _callee5(win, ext) {
       var cbCalled, resizeDone, lang, prepResize, runCallback, btnSelects, svgicons, fallbackObj, placementObj, holders;
@@ -30790,7 +31829,7 @@ editor.init = function () {
         while (1) {
           switch (_context5.prev = _context5.next) {
             case 0:
-              prepResize = function _ref15() {
+              prepResize = function _ref14() {
                 if (resizeTimer) {
                   clearTimeout(resizeTimer);
                   resizeTimer = null;
@@ -30809,7 +31848,7 @@ editor.init = function () {
                 break;
               }
 
-              return _context5.abrupt("return");
+              return _context5.abrupt("return", undefined);
 
             case 3:
               cbCalled = false;
@@ -30846,6 +31885,10 @@ editor.init = function () {
               extsPreLang.push(ext);
 
             case 14:
+              /**
+              *
+              * @returns {undefined}
+              */
               runCallback = function runCallback() {
                 if (ext.callback && !cbCalled) {
                   cbCalled = true;
@@ -30886,70 +31929,78 @@ editor.init = function () {
 
                   switch (tool.type) {
                     case 'tool_button':
-                      html = '<div class="tool_button">' + tool.id + '</div>';
-                      var div = $$b(html).appendTo(panel);
+                      {
+                        html = '<div class="tool_button">' + tool.id + '</div>';
+                        var div = $$b(html).appendTo(panel);
 
-                      if (tool.events) {
-                        $$b.each(tool.events, function (evt, func) {
-                          $$b(div).bind(evt, func);
-                        });
+                        if (tool.events) {
+                          $$b.each(tool.events, function (evt, func) {
+                            $$b(div).bind(evt, func);
+                          });
+                        }
+
+                        break;
                       }
 
-                      break;
-
                     case 'select':
-                      html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
-                      $$b.each(tool.options, function (val, text) {
-                        var sel = val === tool.defval ? ' selected' : '';
-                        html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
-                      });
-                      html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
+                      {
+                        html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
+                        $$b.each(tool.options, function (val, text) {
+                          var sel = val === tool.defval ? ' selected' : '';
+                          html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
+                        });
+                        html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
 
-                      var sel = $$b(html).appendTo(panel).find('select');
-                      $$b.each(tool.events, function (evt, func) {
-                        $$b(sel).bind(evt, func);
-                      });
-                      break;
+                        var sel = $$b(html).appendTo(panel).find('select');
+                        $$b.each(tool.events, function (evt, func) {
+                          $$b(sel).bind(evt, func);
+                        });
+                        break;
+                      }
 
                     case 'button-select':
-                      html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
-                      var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
+                      {
+                        html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
+                        var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
 
-                      if (tool.colnum) {
-                        list.addClass('optcols' + tool.colnum);
-                      } // Creates the tool, hides & adds it, returns the select element
+                        if (tool.colnum) {
+                          list.addClass('optcols' + tool.colnum);
+                        } // Creates the tool, hides & adds it, returns the select element
 
-                      /* const dropdown = */
+                        /* const dropdown = */
 
 
-                      $$b(html).appendTo(panel).children();
-                      btnSelects.push({
-                        elem: '#' + tool.id,
-                        list: '#' + tool.id + '_opts',
-                        title: tool.title,
-                        callback: tool.events.change,
-                        cur: '#cur_' + tool.id
-                      });
-                      break;
+                        $$b(html).appendTo(panel).children();
+                        btnSelects.push({
+                          elem: '#' + tool.id,
+                          list: '#' + tool.id + '_opts',
+                          title: tool.title,
+                          callback: tool.events.change,
+                          cur: '#cur_' + tool.id
+                        });
+                        break;
+                      }
 
                     case 'input':
-                      html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
-                      // Add to given tool.panel
+                      {
+                        html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
+                        // Add to given tool.panel
 
-                      var inp = $$b(html).appendTo(panel).find('input');
+                        var inp = $$b(html).appendTo(panel).find('input');
 
-                      if (tool.spindata) {
-                        inp.SpinButton(tool.spindata);
+                        if (tool.spindata) {
+                          inp.SpinButton(tool.spindata);
+                        }
+
+                        if (tool.events) {
+                          $$b.each(tool.events, function (evt, func) {
+                            inp.bind(evt, func);
+                          });
+                        }
+
+                        break;
                       }
 
-                      if (tool.events) {
-                        $$b.each(tool.events, function (evt, func) {
-                          inp.bind(evt, func);
-                        });
-                      }
-
-                      break;
-
                     default:
                       break;
                   }
@@ -31222,6 +32273,7 @@ editor.init = function () {
               }
 
               return _context5.abrupt("return", new Promise(function (resolve, reject) {
+                // eslint-disable-line promise/avoid-new
                 $$b.svgIcons(svgicons, {
                   w: 24,
                   h: 24,
@@ -31253,10 +32305,17 @@ editor.init = function () {
       }, _callee5, this);
     }));
 
-    return function extAdded(_x3, _x4) {
-      return _ref14.apply(this, arguments);
+    return function extAdded(_x4, _x5) {
+      return _ref13.apply(this, arguments);
     };
   }();
+  /**
+  * @param {string} color
+  * @param {Float} opac
+  * @param {string} type
+  * @returns {module:jGraduate~Paint}
+  */
+
 
   var getPaint = function getPaint(color, opac, type) {
     // update the editor's fill paint
@@ -31304,6 +32363,7 @@ editor.init = function () {
     }
 
     if (!exportWindow || exportWindow.closed) {
+      /* await */
       $$b.alert(uiStrings$1.notification.popupWindowBlocked);
       return;
     }
@@ -31315,14 +32375,15 @@ editor.init = function () {
   svgCanvas.bind('updateCanvas',
   /**
    * @param {external:Window} win
-   * @param {false} center
-   * @param {module:math.XYObject} newCtr
+   * @param {PlainObject} centerInfo
+   * @param {false} centerInfo.center
+   * @param {module:math.XYObject} centerInfo.newCtr
    * @listens module:svgcanvas.SvgCanvas#event:updateCanvas
    * @returns {undefined}
    */
-  function (win, _ref16) {
-    var center = _ref16.center,
-        newCtr = _ref16.newCtr;
+  function (win, _ref15) {
+    var center = _ref15.center,
+        newCtr = _ref15.newCtr;
     updateCanvas(center, newCtr);
   });
   svgCanvas.bind('contextset', contextChanged);
@@ -31353,14 +32414,25 @@ editor.init = function () {
   });
   setBackground($$b.pref('bkgd_color'), $$b.pref('bkgd_url'));
   $$b('#image_save_opts input').val([$$b.pref('img_save')]);
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
 
   var changeRectRadius = function changeRectRadius(ctl) {
     svgCanvas.setRectRadius(ctl.value);
   };
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
+
 
   var changeFontSize = function changeFontSize(ctl) {
     svgCanvas.setFontSize(ctl.value);
   };
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
+
 
   var changeStrokeWidth = function changeStrokeWidth(ctl) {
     var val = ctl.value;
@@ -31371,14 +32443,24 @@ editor.init = function () {
 
     svgCanvas.setStrokeWidth(val);
   };
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
+
 
   var changeRotationAngle = function changeRotationAngle(ctl) {
     svgCanvas.setRotationAngle(ctl.value);
-    $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value, 10) === 0);
+    $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);
   };
+  /**
+  * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+  * @param {string} [val=ctl.value]
+  * @returns {undefined}
+  */
+
 
   var changeOpacity = function changeOpacity(ctl, val) {
-    if (val == null) {
+    if (isNullish(val)) {
       val = ctl.value;
     }
 
@@ -31390,9 +32472,16 @@ editor.init = function () {
 
     svgCanvas.setOpacity(val / 100);
   };
+  /**
+  * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+  * @param {string} [val=ctl.value]
+  * @param {boolean} noUndo
+  * @returns {undefined}
+  */
+
 
   var changeBlur = function changeBlur(ctl, val, noUndo) {
-    if (val == null) {
+    if (isNullish(val)) {
       val = ctl.value;
     }
 
@@ -31425,29 +32514,72 @@ editor.init = function () {
   }); // fired when user wants to move elements to another layer
 
   var promptMoveLayerOnce = false;
-  $$b('#selLayerNames').change(function () {
-    var destLayer = this.options[this.selectedIndex].value;
-    var confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+  $$b('#selLayerNames').change(
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee6() {
+    var destLayer, confirmStr, moveToLayer, ok;
+    return regeneratorRuntime.wrap(function _callee6$(_context6) {
+      while (1) {
+        switch (_context6.prev = _context6.next) {
+          case 0:
+            destLayer = this.options[this.selectedIndex].value;
+            confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+            /**
+            * @param {boolean} ok
+            * @returns {undefined}
+            */
 
-    var moveToLayer = function moveToLayer(ok) {
-      if (!ok) {
-        return;
+            moveToLayer = function moveToLayer(ok) {
+              if (!ok) {
+                return;
+              }
+
+              promptMoveLayerOnce = true;
+              svgCanvas.moveSelectedToLayer(destLayer);
+              svgCanvas.clearSelection();
+              populateLayers();
+            };
+
+            if (!destLayer) {
+              _context6.next = 14;
+              break;
+            }
+
+            if (!promptMoveLayerOnce) {
+              _context6.next = 8;
+              break;
+            }
+
+            moveToLayer(true);
+            _context6.next = 14;
+            break;
+
+          case 8:
+            _context6.next = 10;
+            return $$b.confirm(confirmStr);
+
+          case 10:
+            ok = _context6.sent;
+
+            if (ok) {
+              _context6.next = 13;
+              break;
+            }
+
+            return _context6.abrupt("return");
+
+          case 13:
+            moveToLayer(true);
+
+          case 14:
+          case "end":
+            return _context6.stop();
+        }
       }
-
-      promptMoveLayerOnce = true;
-      svgCanvas.moveSelectedToLayer(destLayer);
-      svgCanvas.clearSelection();
-      populateLayers();
-    };
-
-    if (destLayer) {
-      if (promptMoveLayerOnce) {
-        moveToLayer(true);
-      } else {
-        $$b.confirm(confirmStr, moveToLayer);
-      }
-    }
-  });
+    }, _callee6, this);
+  })));
   $$b('#font_family').change(function () {
     svgCanvas.setFontFamily(this.value);
   });
@@ -31476,8 +32608,10 @@ editor.init = function () {
     var valid = isValidUnit(attr, val, selectedElement);
 
     if (!valid) {
-      $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
       this.value = selectedElement.getAttribute(attr);
+      /* await */
+
+      $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
       return false;
     }
 
@@ -31506,6 +32640,7 @@ editor.init = function () {
     }
 
     this.blur();
+    return true;
   }); // Prevent selection of elements when shift-clicking
 
   $$b('#palette').mouseover(function () {
@@ -31552,7 +32687,7 @@ editor.init = function () {
         keypan = false;
     $$b('#svgcanvas').bind('mousemove mouseup', function (evt) {
       if (panning === false) {
-        return;
+        return true;
       }
 
       wArea.scrollLeft -= evt.clientX - lastX;
@@ -31572,6 +32707,8 @@ editor.init = function () {
         lastY = evt.clientY;
         return false;
       }
+
+      return true;
     });
     $$b(window).mouseup(function () {
       panning = false;
@@ -31756,7 +32893,7 @@ editor.init = function () {
       return;
     }
 
-    var perc = parseInt($$b(this).text().split('%')[0], 10);
+    var perc = parseInt($$b(this).text().split('%')[0]);
     changeOpacity(false, perc);
   }, true); // For slider usage, see: http://jqueryui.com/demos/slider/
 
@@ -31834,13 +32971,18 @@ editor.init = function () {
 
   (function () {
     var inp;
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var unfocus = function unfocus() {
       $$b(inp).blur();
     };
 
     $$b('#svg_editor').find('button, select, input:not(#text)').focus(function () {
-      inp = this;
+      inp = this; // eslint-disable-line consistent-this
+
       uiContext = 'toolbars';
       workarea.mousedown(unfocus);
     }).blur(function () {
@@ -31852,60 +32994,110 @@ editor.init = function () {
       }
     });
   })();
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickFHPath = function clickFHPath() {
     if (toolButtonClick('#tool_fhpath')) {
       svgCanvas.setMode('fhpath');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickLine = function clickLine() {
     if (toolButtonClick('#tool_line')) {
       svgCanvas.setMode('line');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickSquare = function clickSquare() {
     if (toolButtonClick('#tool_square')) {
       svgCanvas.setMode('square');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickRect = function clickRect() {
     if (toolButtonClick('#tool_rect')) {
       svgCanvas.setMode('rect');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickFHRect = function clickFHRect() {
     if (toolButtonClick('#tool_fhrect')) {
       svgCanvas.setMode('fhrect');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickCircle = function clickCircle() {
     if (toolButtonClick('#tool_circle')) {
       svgCanvas.setMode('circle');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickEllipse = function clickEllipse() {
     if (toolButtonClick('#tool_ellipse')) {
       svgCanvas.setMode('ellipse');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickFHEllipse = function clickFHEllipse() {
     if (toolButtonClick('#tool_fhellipse')) {
       svgCanvas.setMode('fhellipse');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickImage = function clickImage() {
     if (toolButtonClick('#tool_image')) {
       svgCanvas.setMode('image');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickZoom = function clickZoom() {
     if (toolButtonClick('#tool_zoom')) {
@@ -31913,6 +33105,11 @@ editor.init = function () {
       workarea.css('cursor', zoomInIcon);
     }
   };
+  /**
+  * @param {Float} multiplier
+  * @returns {undefined}
+  */
+
 
   var zoomImage = function zoomImage(multiplier) {
     var res = svgCanvas.getResolution();
@@ -31923,6 +33120,11 @@ editor.init = function () {
     zoomDone();
     updateCanvas(true);
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var dblclickZoom = function dblclickZoom() {
     if (toolButtonClick('#tool_zoom')) {
@@ -31930,38 +33132,67 @@ editor.init = function () {
       setSelectMode();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickText = function clickText() {
     if (toolButtonClick('#tool_text')) {
       svgCanvas.setMode('text');
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickPath = function clickPath() {
     if (toolButtonClick('#tool_path')) {
       svgCanvas.setMode('path');
     }
-  }; // Delete is a contextual tool that only appears in the ribbon if
-  // an element has been selected
+  };
+  /**
+  * Delete is a contextual tool that only appears in the ribbon if
+  * an element has been selected.
+  * @returns {undefined}
+  */
 
 
   var deleteSelected = function deleteSelected() {
-    if (selectedElement != null || multiselected) {
+    if (!isNullish(selectedElement) || multiselected) {
       svgCanvas.deleteSelectedElements();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var cutSelected = function cutSelected() {
-    if (selectedElement != null || multiselected) {
+    if (!isNullish(selectedElement) || multiselected) {
       svgCanvas.cutSelectedElements();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var copySelected = function copySelected() {
-    if (selectedElement != null || multiselected) {
+    if (!isNullish(selectedElement) || multiselected) {
       svgCanvas.copySelectedElements();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var pasteInCenter = function pasteInCenter() {
     var zoom = svgCanvas.getZoom();
@@ -31969,49 +33200,114 @@ editor.init = function () {
     var y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;
     svgCanvas.pasteElements('point', x, y);
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var moveToTopSelected = function moveToTopSelected() {
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       svgCanvas.moveToTopSelectedElement();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var moveToBottomSelected = function moveToBottomSelected() {
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       svgCanvas.moveToBottomSelectedElement();
     }
   };
+  /**
+  * @param {"Up"|"Down"} dir
+  * @returns {undefined}
+  */
+
 
   var moveUpDownSelected = function moveUpDownSelected(dir) {
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       svgCanvas.moveUpDownSelected(dir);
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var convertToPath$$1 = function convertToPath$$1() {
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       svgCanvas.convertToPath();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var reorientPath = function reorientPath() {
-    if (selectedElement != null) {
+    if (!isNullish(selectedElement)) {
       path.reorient();
     }
   };
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
 
-  var makeHyperlink = function makeHyperlink() {
-    if (selectedElement != null || multiselected) {
-      $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://', function (url) {
-        if (url) {
-          svgCanvas.makeHyperlink(url);
+
+  var makeHyperlink =
+  /*#__PURE__*/
+  function () {
+    var _ref17 = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee7() {
+      var url;
+      return regeneratorRuntime.wrap(function _callee7$(_context7) {
+        while (1) {
+          switch (_context7.prev = _context7.next) {
+            case 0:
+              if (!(!isNullish(selectedElement) || multiselected)) {
+                _context7.next = 5;
+                break;
+              }
+
+              _context7.next = 3;
+              return $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://');
+
+            case 3:
+              url = _context7.sent;
+
+              if (url) {
+                svgCanvas.makeHyperlink(url);
+              }
+
+            case 5:
+            case "end":
+              return _context7.stop();
+          }
         }
-      });
-    }
-  };
+      }, _callee7, this);
+    }));
+
+    return function makeHyperlink() {
+      return _ref17.apply(this, arguments);
+    };
+  }();
+  /**
+  * @param {Float} dx
+  * @param {Float} dy
+  * @returns {undefined}
+  */
+
 
   var moveSelected = function moveSelected(dx, dy) {
-    if (selectedElement != null || multiselected) {
+    if (!isNullish(selectedElement) || multiselected) {
       if (curConfig.gridSnapping) {
         // Use grid snap value regardless of zoom level
         var multi = svgCanvas.getZoom() * curConfig.snappingStep;
@@ -32022,24 +33318,44 @@ editor.init = function () {
       svgCanvas.moveSelectedElements(dx, dy);
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var linkControlPoints = function linkControlPoints() {
     $$b('#tool_node_link').toggleClass('push_button_pressed tool_button');
     var linked = $$b('#tool_node_link').hasClass('push_button_pressed');
     path.linkControlPoints(linked);
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clonePathNode = function clonePathNode() {
     if (path.getNodePoint()) {
       path.clonePathNode();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var deletePathNode = function deletePathNode() {
     if (path.getNodePoint()) {
       path.deletePathNode();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var addSubPath = function addSubPath() {
     var button = $$b('#tool_add_subpath');
@@ -32047,21 +33363,42 @@ editor.init = function () {
     button.toggleClass('push_button_pressed tool_button');
     path.addSubPath(sp);
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var opencloseSubPath = function opencloseSubPath() {
     path.opencloseSubPath();
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var selectNext = function selectNext() {
     svgCanvas.cycleElement(1);
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var selectPrev = function selectPrev() {
     svgCanvas.cycleElement(0);
   };
+  /**
+  * @param {0|1} cw
+  * @param {Integer} step
+  * @returns {undefined}
+  */
+
 
   var rotateSelected = function rotateSelected(cw, step) {
-    if (selectedElement == null || multiselected) {
+    if (isNullish(selectedElement) || multiselected) {
       return;
     }
 
@@ -32075,43 +33412,86 @@ editor.init = function () {
   };
   /**
    * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument
-   * @returns {undefined}
+   * @returns {Promise} Resolves to `undefined`
    */
 
 
-  var clickClear = function clickClear() {
-    var _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2),
-        x = _curConfig$dimensions[0],
-        y = _curConfig$dimensions[1];
+  var clickClear =
+  /*#__PURE__*/
+  function () {
+    var _ref18 = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee8() {
+      var _curConfig$dimensions, x, y, ok;
 
-    $$b.confirm(uiStrings$1.notification.QwantToClear, function (ok) {
-      if (!ok) {
-        return;
-      }
+      return regeneratorRuntime.wrap(function _callee8$(_context8) {
+        while (1) {
+          switch (_context8.prev = _context8.next) {
+            case 0:
+              _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2), x = _curConfig$dimensions[0], y = _curConfig$dimensions[1];
+              _context8.next = 3;
+              return $$b.confirm(uiStrings$1.notification.QwantToClear);
+
+            case 3:
+              ok = _context8.sent;
+
+              if (ok) {
+                _context8.next = 6;
+                break;
+              }
+
+              return _context8.abrupt("return");
+
+            case 6:
+              setSelectMode();
+              svgCanvas.clear();
+              svgCanvas.setResolution(x, y);
+              updateCanvas(true);
+              zoomImage();
+              populateLayers();
+              updateContextPanel();
+              prepPaints();
+              svgCanvas.runExtensions('onNewDocument');
+
+            case 15:
+            case "end":
+              return _context8.stop();
+          }
+        }
+      }, _callee8, this);
+    }));
+
+    return function clickClear() {
+      return _ref18.apply(this, arguments);
+    };
+  }();
+  /**
+  *
+  * @returns {false}
+  */
 
-      setSelectMode();
-      svgCanvas.clear();
-      svgCanvas.setResolution(x, y);
-      updateCanvas(true);
-      zoomImage();
-      populateLayers();
-      updateContextPanel();
-      prepPaints();
-      svgCanvas.runExtensions('onNewDocument');
-    });
-  };
 
   var clickBold = function clickBold() {
     svgCanvas.setBold(!svgCanvas.getBold());
     updateContextPanel();
     return false;
   };
+  /**
+  *
+  * @returns {false}
+  */
+
 
   var clickItalic = function clickItalic() {
     svgCanvas.setItalic(!svgCanvas.getItalic());
     updateContextPanel();
     return false;
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickSave = function clickSave() {
     // In the future, more options can be provided here
@@ -32123,117 +33503,141 @@ editor.init = function () {
   };
 
   var loadingURL;
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
 
-  var clickExport = function clickExport() {
-    $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
-    // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
-    'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'],
+  var clickExport =
+  /*#__PURE__*/
+  function () {
+    var _ref19 = _asyncToGenerator(
     /*#__PURE__*/
-    function () {
-      var _ref17 = _asyncToGenerator(
-      /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee6(imgType) {
-        var exportWindowName, openExportWindow, chrome, quality;
-        return regeneratorRuntime.wrap(function _callee6$(_context6) {
-          while (1) {
-            switch (_context6.prev = _context6.next) {
-              case 0:
-                openExportWindow = function _ref18() {
-                  var str = uiStrings$1.notification.loadingImage;
+    regeneratorRuntime.mark(function _callee9() {
+      var imgType, exportWindowName, openExportWindow, chrome, quality;
+      return regeneratorRuntime.wrap(function _callee9$(_context9) {
+        while (1) {
+          switch (_context9.prev = _context9.next) {
+            case 0:
+              openExportWindow = function _ref20() {
+                var loadingImage = uiStrings$1.notification.loadingImage;
 
-                  if (curConfig.exportWindowType === 'new') {
-                    editor.exportWindowCt++;
-                  }
+                if (curConfig.exportWindowType === 'new') {
+                  editor.exportWindowCt++;
+                }
 
-                  exportWindowName = curConfig.canvasName + editor.exportWindowCt;
-                  var popHTML, popURL;
+                exportWindowName = curConfig.canvasName + editor.exportWindowCt;
+                var popHTML, popURL;
 
-                  if (loadingURL) {
-                    popURL = loadingURL;
+                if (loadingURL) {
+                  popURL = loadingURL;
+                } else {
+                  popHTML = "<!DOCTYPE html><html>\n          <head>\n            <meta charset=\"utf-8\">\n            <title>".concat(loadingImage, "</title>\n          </head>\n          <body><h1>").concat(loadingImage, "</h1></body>\n        <html>");
+
+                  if (typeof URL !== 'undefined' && URL.createObjectURL) {
+                    var blob = new Blob([popHTML], {
+                      type: 'text/html'
+                    });
+                    popURL = URL.createObjectURL(blob);
                   } else {
-                    popHTML = "<!DOCTYPE html><html>\n            <head>\n              <meta charset=\"utf-8\">\n              <title>".concat(str, "</title>\n            </head>\n            <body><h1>").concat(str, "</h1></body>\n          <html>");
-
-                    if (typeof URL !== 'undefined' && URL.createObjectURL) {
-                      var blob = new Blob([popHTML], {
-                        type: 'text/html'
-                      });
-                      popURL = URL.createObjectURL(blob);
-                    } else {
-                      popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
-                    }
-
-                    loadingURL = popURL;
+                    popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
                   }
 
-                  exportWindow = window.open(popURL, exportWindowName);
-                };
-
-                if (imgType) {
-                  _context6.next = 3;
-                  break;
+                  loadingURL = popURL;
                 }
 
-                return _context6.abrupt("return");
+                exportWindow = window.open(popURL, exportWindowName);
+              };
 
-              case 3:
-                chrome = isChrome();
+              _context9.next = 3;
+              return $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
+              // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
+              'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'], function () {
+                var sel = $$b(this);
 
-                if (!(imgType === 'PDF')) {
-                  _context6.next = 9;
-                  break;
+                if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
+                  if (!$$b('#image-slider').length) {
+                    $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
+                  }
+                } else {
+                  $$b('#image-slider').parent().remove();
                 }
+              });
 
-                if (!customExportPDF && !chrome) {
-                  openExportWindow();
-                }
+            case 3:
+              imgType = _context9.sent;
 
-                svgCanvas.exportPDF(exportWindowName);
-                _context6.next = 13;
+              if (imgType) {
+                _context9.next = 6;
                 break;
+              }
 
-              case 9:
-                if (!customExportImage) {
-                  openExportWindow();
-                }
+              return _context9.abrupt("return");
 
-                quality = parseInt($$b('#image-slider').val(), 10) / 100;
-                /* const results = */
+            case 6:
+              chrome = isChrome();
 
-                _context6.next = 13;
-                return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+              if (!(imgType === 'PDF')) {
+                _context9.next = 12;
+                break;
+              }
 
-              case 13:
-              case "end":
-                return _context6.stop();
-            }
+              if (!customExportPDF && !chrome) {
+                openExportWindow();
+              }
+
+              svgCanvas.exportPDF(exportWindowName);
+              _context9.next = 16;
+              break;
+
+            case 12:
+              if (!customExportImage) {
+                openExportWindow();
+              }
+
+              quality = parseInt($$b('#image-slider').val()) / 100;
+              /* const results = */
+
+              _context9.next = 16;
+              return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+
+            case 16:
+            case "end":
+              return _context9.stop();
           }
-        }, _callee6, this);
-      }));
-
-      return function (_x5) {
-        return _ref17.apply(this, arguments);
-      };
-    }(), function () {
-      var sel = $$b(this);
-
-      if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
-        if (!$$b('#image-slider').length) {
-          $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
         }
-      } else {
-        $$b('#image-slider').parent().remove();
-      }
-    });
-  }; // by default, svgCanvas.open() is a no-op.
-  // it is up to an extension mechanism (opera widget, etc)
-  // to call setCustomHandlers() which will make it do something
+      }, _callee9, this);
+    }));
+
+    return function clickExport() {
+      return _ref19.apply(this, arguments);
+    };
+  }();
+  /**
+   * By default, svgCanvas.open() is a no-op. It is up to an extension
+   *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which
+   *  will make it do something.
+   * @returns {undefined}
+   */
 
 
   var clickOpen = function clickOpen() {
     svgCanvas.open();
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
+
+  var clickImport = function clickImport() {
+    /* */
+  };
+  /**
+  *
+  * @returns {undefined}
+  */
 
-  var clickImport = function clickImport() {};
 
   var clickUndo = function clickUndo() {
     if (undoMgr.getUndoStackSize() > 0) {
@@ -32241,6 +33645,11 @@ editor.init = function () {
       populateLayers();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickRedo = function clickRedo() {
     if (undoMgr.getRedoStackSize() > 0) {
@@ -32248,6 +33657,11 @@ editor.init = function () {
       populateLayers();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickGroup = function clickGroup() {
     // group
@@ -32257,15 +33671,30 @@ editor.init = function () {
       svgCanvas.ungroupSelectedElement();
     }
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickClone = function clickClone() {
     svgCanvas.cloneSelectedElements(20, 20);
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickAlign = function clickAlign() {
     var letter = this.id.replace('tool_align', '').charAt(0);
     svgCanvas.alignSelectedElements(letter, $$b('#align_relative_to').val());
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var clickWireframe = function clickWireframe() {
     $$b('#tool_wireframe').toggleClass('push_button_pressed tool_button');
@@ -32293,6 +33722,10 @@ editor.init = function () {
   }).css('position', 'absolute');
   var docprops = false;
   var preferences = false;
+  /**
+  *
+  * @returns {undefined}
+  */
 
   var showDocProperties = function showDocProperties() {
     if (docprops) {
@@ -32315,6 +33748,11 @@ editor.init = function () {
     $$b('#canvas_title').val(svgCanvas.getDocumentTitle());
     $$b('#svg_docprops').show();
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var showPreferences = function showPreferences() {
     if (preferences) {
@@ -32324,8 +33762,6 @@ editor.init = function () {
     preferences = true;
     $$b('#main_menu').hide(); // Update background color with current one
 
-    var blocks = $$b('#bg_blocks div');
-    var curBg = 'cur_background';
     var canvasBg = curPrefs.bkgd_color;
     var url = $$b.pref('bkgd_url');
     blocks.each(function () {
@@ -32351,41 +33787,94 @@ editor.init = function () {
     $$b('#grid_color').attr('value', curConfig.gridColor);
     $$b('#svg_prefs').show();
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var hideSourceEditor = function hideSourceEditor() {
     $$b('#svg_source_editor').hide();
     editingsource = false;
     $$b('#svg_source_textarea').blur();
   };
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
 
-  var saveSourceEditor = function saveSourceEditor() {
-    if (!editingsource) {
-      return;
-    }
 
-    var saveChanges = function saveChanges() {
-      svgCanvas.clearSelection();
-      hideSourceEditor();
-      zoomImage();
-      populateLayers();
-      updateTitle();
-      prepPaints();
-    };
+  var saveSourceEditor =
+  /*#__PURE__*/
+  function () {
+    var _ref21 = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee10() {
+      var saveChanges, ok;
+      return regeneratorRuntime.wrap(function _callee10$(_context10) {
+        while (1) {
+          switch (_context10.prev = _context10.next) {
+            case 0:
+              if (editingsource) {
+                _context10.next = 2;
+                break;
+              }
 
-    if (!svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
-      $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource, function (ok) {
-        if (!ok) {
-          return false;
+              return _context10.abrupt("return");
+
+            case 2:
+              saveChanges = function saveChanges() {
+                svgCanvas.clearSelection();
+                hideSourceEditor();
+                zoomImage();
+                populateLayers();
+                updateTitle();
+                prepPaints();
+              };
+
+              if (svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
+                _context10.next = 11;
+                break;
+              }
+
+              _context10.next = 6;
+              return $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource);
+
+            case 6:
+              ok = _context10.sent;
+
+              if (ok) {
+                _context10.next = 9;
+                break;
+              }
+
+              return _context10.abrupt("return");
+
+            case 9:
+              saveChanges();
+              return _context10.abrupt("return");
+
+            case 11:
+              saveChanges();
+              setSelectMode();
+
+            case 13:
+            case "end":
+              return _context10.stop();
+          }
         }
+      }, _callee10, this);
+    }));
 
-        saveChanges();
-      });
-    } else {
-      saveChanges();
-    }
+    return function saveSourceEditor() {
+      return _ref21.apply(this, arguments);
+    };
+  }();
+  /**
+  *
+  * @returns {undefined}
+  */
 
-    setSelectMode();
-  };
 
   var hideDocProperties = function hideDocProperties() {
     $$b('#svg_docprops').hide();
@@ -32394,11 +33883,21 @@ editor.init = function () {
     $$b('#image_save_opts input').val([$$b.pref('img_save')]);
     docprops = false;
   };
+  /**
+  *
+  * @returns {undefined}
+  */
+
 
   var hidePreferences = function hidePreferences() {
     $$b('#svg_prefs').hide();
     preferences = false;
   };
+  /**
+  *
+  * @returns {boolean} Whether there were problems saving the document properties
+  */
+
 
   var saveDocProperties = function saveDocProperties() {
     // set title
@@ -32412,22 +33911,27 @@ editor.init = function () {
         h = height.val();
 
     if (w !== 'fit' && !isValidUnit('width', w)) {
-      $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
       width.parent().addClass('error');
+      /* await */
+
+      $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
       return false;
     }
 
     width.parent().removeClass('error');
 
     if (h !== 'fit' && !isValidUnit('height', h)) {
-      $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
       height.parent().addClass('error');
+      /* await */
+
+      $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
       return false;
     }
 
     height.parent().removeClass('error');
 
     if (!svgCanvas.setResolution(w, h)) {
+      /* await */
       $$b.alert(uiStrings$1.notification.noContentToFitTo);
       return false;
     } // Set image save option
@@ -32436,6 +33940,7 @@ editor.init = function () {
     $$b.pref('img_save', $$b('#image_save_opts :checked').val());
     updateCanvas();
     hideDocProperties();
+    return true;
   };
   /**
   * Save user preferences based on current values in the UI.
@@ -32448,12 +33953,12 @@ editor.init = function () {
   /*#__PURE__*/
   _asyncToGenerator(
   /*#__PURE__*/
-  regeneratorRuntime.mark(function _callee7() {
-    var color, lang, _ref20, langParam, langData;
+  regeneratorRuntime.mark(function _callee11() {
+    var color, lang, _ref23, langParam, langData;
 
-    return regeneratorRuntime.wrap(function _callee7$(_context7) {
+    return regeneratorRuntime.wrap(function _callee11$(_context11) {
       while (1) {
-        switch (_context7.prev = _context7.next) {
+        switch (_context11.prev = _context11.next) {
           case 0:
             // Set background
             color = $$b('#bg_blocks div.cur_background').css('background-color') || '#FFF';
@@ -32462,18 +33967,18 @@ editor.init = function () {
             lang = $$b('#lang_select').val();
 
             if (!(lang !== $$b.pref('lang'))) {
-              _context7.next = 11;
+              _context11.next = 11;
               break;
             }
 
-            _context7.next = 6;
+            _context11.next = 6;
             return editor.putLocale(lang, goodLangs, curConfig);
 
           case 6:
-            _ref20 = _context7.sent;
-            langParam = _ref20.langParam;
-            langData = _ref20.langData;
-            _context7.next = 11;
+            _ref23 = _context11.sent;
+            langParam = _ref23.langParam;
+            langData = _ref23.langData;
+            _context11.next = 11;
             return setLang(langParam, langData);
 
           case 11:
@@ -32497,43 +34002,95 @@ editor.init = function () {
 
           case 22:
           case "end":
-            return _context7.stop();
+            return _context11.stop();
         }
       }
-    }, _callee7, this);
+    }, _callee11, this);
   }));
 
   var resetScrollPos = $$b.noop;
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
 
-  var cancelOverlays = function cancelOverlays() {
-    $$b('#dialog_box').hide();
+  var cancelOverlays =
+  /*#__PURE__*/
+  function () {
+    var _ref24 = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee12() {
+      var ok;
+      return regeneratorRuntime.wrap(function _callee12$(_context12) {
+        while (1) {
+          switch (_context12.prev = _context12.next) {
+            case 0:
+              $$b('#dialog_box').hide();
 
-    if (!editingsource && !docprops && !preferences) {
-      if (curContext) {
-        svgCanvas.leaveContext();
-      }
+              if (!(!editingsource && !docprops && !preferences)) {
+                _context12.next = 4;
+                break;
+              }
 
-      return;
-    }
+              if (curContext) {
+                svgCanvas.leaveContext();
+              }
 
-    if (editingsource) {
-      if (origSource !== $$b('#svg_source_textarea').val()) {
-        $$b.confirm(uiStrings$1.notification.QignoreSourceChanges, function (ok) {
-          if (ok) {
-            hideSourceEditor();
+              return _context12.abrupt("return");
+
+            case 4:
+              if (!editingsource) {
+                _context12.next = 15;
+                break;
+              }
+
+              if (!(origSource !== $$b('#svg_source_textarea').val())) {
+                _context12.next = 12;
+                break;
+              }
+
+              _context12.next = 8;
+              return $$b.confirm(uiStrings$1.notification.QignoreSourceChanges);
+
+            case 8:
+              ok = _context12.sent;
+
+              if (ok) {
+                hideSourceEditor();
+              }
+
+              _context12.next = 13;
+              break;
+
+            case 12:
+              hideSourceEditor();
+
+            case 13:
+              _context12.next = 16;
+              break;
+
+            case 15:
+              if (docprops) {
+                hideDocProperties();
+              } else if (preferences) {
+                hidePreferences();
+              }
+
+            case 16:
+              resetScrollPos();
+
+            case 17:
+            case "end":
+              return _context12.stop();
           }
-        });
-      } else {
-        hideSourceEditor();
-      }
-    } else if (docprops) {
-      hideDocProperties();
-    } else if (preferences) {
-      hidePreferences();
-    }
+        }
+      }, _callee12, this);
+    }));
 
-    resetScrollPos();
-  };
+    return function cancelOverlays() {
+      return _ref24.apply(this, arguments);
+    };
+  }();
 
   var winWh = {
     width: $$b(window).width(),
@@ -32556,9 +34113,13 @@ editor.init = function () {
     editor.ready(function () {
       // TODO: Find better way to detect when to do this to minimize
       // flickering effect
-      setTimeout(function () {
-        resetScrollPos();
-      }, 500);
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        setTimeout(function () {
+          resetScrollPos();
+          resolve();
+        }, 500);
+      });
     });
     workarea.scroll(function () {
       curScrollPos = {
@@ -32587,6 +34148,7 @@ editor.init = function () {
     }
   });
   $$b('#url_notice').click(function () {
+    /* await */
     $$b.alert(this.title);
   });
   $$b('#change_image_url').click(promptImgURL); // added these event handlers for all the push buttons so they
@@ -32629,8 +34191,13 @@ editor.init = function () {
         button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');
       }
     }
-  } // TODO: go back to the color boxes having white background-color and then setting
-  //  background-image to none.png (otherwise partially transparent gradients look weird)
+  }
+  /**
+  * @param {external:jQuery} elem
+  * @todo Go back to the color boxes having white background-color and then setting
+  *  background-image to none.png (otherwise partially transparent gradients look weird)
+  * @returns {undefined}
+  */
 
 
   var colorPicker = function colorPicker(elem) {
@@ -32665,131 +34232,149 @@ editor.init = function () {
     });
   };
 
-  var PaintBox = function PaintBox(container, type) {
-    var paintColor, paintOpacity;
-    var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
+  var PaintBox =
+  /*#__PURE__*/
+  function () {
+    function PaintBox(container, type) {
+      _classCallCheck(this, PaintBox);
 
-    var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n        <rect width=\"16.5\" height=\"16.5\"\n          fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n        <defs><linearGradient id=\"gradbox_\"/></defs>\n      </svg>"), 'text/xml');
-    var docElem = svgdocbox.documentElement;
-    docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
-    docElem.setAttribute('width', 16.5);
-    this.rect = docElem.firstElementChild;
-    this.defs = docElem.getElementsByTagName('defs')[0];
-    this.grad = this.defs.firstElementChild;
-    this.paint = new $$b.jGraduate.Paint({
-      solidColor: cur.color
-    });
-    this.type = type;
+      var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
 
-    this.setPaint = function (paint, apply) {
-      this.paint = paint;
-      var ptype = paint.type;
-      var opac = paint.alpha / 100;
-      var fillAttr = 'none';
+      var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n          <rect width=\"16.5\" height=\"16.5\"\n            fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n          <defs><linearGradient id=\"gradbox_\"/></defs>\n        </svg>"), 'text/xml');
+      var docElem = svgdocbox.documentElement;
+      docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
+      docElem.setAttribute('width', 16.5);
+      this.rect = docElem.firstElementChild;
+      this.defs = docElem.getElementsByTagName('defs')[0];
+      this.grad = this.defs.firstElementChild;
+      this.paint = new $$b.jGraduate.Paint({
+        solidColor: cur.color
+      });
+      this.type = type;
+    }
 
-      switch (ptype) {
-        case 'solidColor':
-          fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
-          break;
+    _createClass(PaintBox, [{
+      key: "setPaint",
+      value: function setPaint(paint, apply) {
+        this.paint = paint;
+        var ptype = paint.type;
+        var opac = paint.alpha / 100;
+        var fillAttr = 'none';
 
-        case 'linearGradient':
-        case 'radialGradient':
-          this.grad.remove();
-          this.grad = this.defs.appendChild(paint[ptype]);
-          var id = this.grad.id = 'gradbox_' + this.type;
-          fillAttr = 'url(#' + id + ')';
-          break;
-      }
-
-      this.rect.setAttribute('fill', fillAttr);
-      this.rect.setAttribute('opacity', opac);
-
-      if (apply) {
-        svgCanvas.setColor(this.type, paintColor, true);
-        svgCanvas.setPaintOpacity(this.type, paintOpacity, true);
-      }
-    };
-
-    this.update = function (apply) {
-      if (!selectedElement) {
-        return;
-      }
-
-      var type = this.type;
-
-      switch (selectedElement.tagName) {
-        case 'use':
-        case 'image':
-        case 'foreignObject':
-          // These elements don't have fill or stroke, so don't change
-          // the current value
-          return;
-
-        case 'g':
-        case 'a':
-          {
-            var childs = selectedElement.getElementsByTagName('*');
-            var gPaint = null;
-
-            for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
-              var elem = childs[_i3];
-              var p = elem.getAttribute(type);
-
-              if (_i3 === 0) {
-                gPaint = p;
-              } else if (gPaint !== p) {
-                gPaint = null;
-                break;
-              }
-            }
-
-            if (gPaint === null) {
-              // No common color, don't update anything
-              paintColor = null;
-              return;
-            }
-
-            paintColor = gPaint;
-            paintOpacity = 1;
+        switch (ptype) {
+          case 'solidColor':
+            fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
             break;
-          }
 
-        default:
-          paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+          case 'linearGradient':
+          case 'radialGradient':
+            {
+              this.grad.remove();
+              this.grad = this.defs.appendChild(paint[ptype]);
+              var id = this.grad.id = 'gradbox_' + this.type;
+              fillAttr = 'url(#' + id + ')';
+              break;
+            }
+        }
 
-          if (isNaN(paintOpacity)) {
-            paintOpacity = 1.0;
-          }
+        this.rect.setAttribute('fill', fillAttr);
+        this.rect.setAttribute('opacity', opac);
 
-          var defColor = type === 'fill' ? 'black' : 'none';
-          paintColor = selectedElement.getAttribute(type) || defColor;
+        if (apply) {
+          svgCanvas.setColor(this.type, this._paintColor, true);
+          svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);
+        }
       }
+    }, {
+      key: "update",
+      value: function update(apply) {
+        if (!selectedElement) {
+          return;
+        }
 
-      if (apply) {
-        svgCanvas.setColor(type, paintColor, true);
-        svgCanvas.setPaintOpacity(type, paintOpacity, true);
+        var type = this.type;
+
+        switch (selectedElement.tagName) {
+          case 'use':
+          case 'image':
+          case 'foreignObject':
+            // These elements don't have fill or stroke, so don't change
+            // the current value
+            return;
+
+          case 'g':
+          case 'a':
+            {
+              var childs = selectedElement.getElementsByTagName('*');
+              var gPaint = null;
+
+              for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
+                var elem = childs[_i3];
+                var p = elem.getAttribute(type);
+
+                if (_i3 === 0) {
+                  gPaint = p;
+                } else if (gPaint !== p) {
+                  gPaint = null;
+                  break;
+                }
+              }
+
+              if (gPaint === null) {
+                // No common color, don't update anything
+                this._paintColor = null;
+                return;
+              }
+
+              this._paintColor = gPaint;
+              this._paintOpacity = 1;
+              break;
+            }
+
+          default:
+            {
+              this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+
+              if (isNaN(this._paintOpacity)) {
+                this._paintOpacity = 1.0;
+              }
+
+              var defColor = type === 'fill' ? 'black' : 'none';
+              this._paintColor = selectedElement.getAttribute(type) || defColor;
+            }
+        }
+
+        if (apply) {
+          svgCanvas.setColor(type, this._paintColor, true);
+          svgCanvas.setPaintOpacity(type, this._paintOpacity, true);
+        }
+
+        this._paintOpacity *= 100;
+        var paint = getPaint(this._paintColor, this._paintOpacity, type); // update the rect inside #fill_color/#stroke_color
+
+        this.setPaint(paint);
       }
+    }, {
+      key: "prep",
+      value: function prep() {
+        var ptype = this.paint.type;
 
-      paintOpacity *= 100;
-      var paint = getPaint(paintColor, paintOpacity, type); // update the rect inside #fill_color/#stroke_color
-
-      this.setPaint(paint);
-    };
-
-    this.prep = function () {
-      var ptype = this.paint.type;
-
-      switch (ptype) {
-        case 'linearGradient':
-        case 'radialGradient':
-          var paint = new $$b.jGraduate.Paint({
-            copy: this.paint
-          });
-          svgCanvas.setPaint(type, paint);
-          break;
+        switch (ptype) {
+          case 'linearGradient':
+          case 'radialGradient':
+            {
+              var paint = new $$b.jGraduate.Paint({
+                copy: this.paint
+              });
+              svgCanvas.setPaint(this.type, paint);
+              break;
+            }
+        }
       }
-    };
-  };
+    }]);
+
+    return PaintBox;
+  }();
 
   paintBox.fill = new PaintBox('#fill_color', 'fill');
   paintBox.stroke = new PaintBox('#stroke_color', 'stroke');
@@ -32872,29 +34457,61 @@ editor.init = function () {
     $$b(this).removeClass('push_button_pressed').addClass('push_button');
   }); // ask for a layer name
 
-  $$b('#layer_new').click(function () {
-    var uniqName,
-        i = svgCanvas.getCurrentDrawing().getNumLayers();
+  $$b('#layer_new').click(
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee13() {
+    var uniqName, i, newName;
+    return regeneratorRuntime.wrap(function _callee13$(_context13) {
+      while (1) {
+        switch (_context13.prev = _context13.next) {
+          case 0:
+            i = svgCanvas.getCurrentDrawing().getNumLayers();
 
-    do {
-      uniqName = uiStrings$1.layers.layer + ' ' + ++i;
-    } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
+            do {
+              uniqName = uiStrings$1.layers.layer + ' ' + ++i;
+            } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
 
-    $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName, function (newName) {
-      if (!newName) {
-        return;
+            _context13.next = 4;
+            return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName);
+
+          case 4:
+            newName = _context13.sent;
+
+            if (newName) {
+              _context13.next = 7;
+              break;
+            }
+
+            return _context13.abrupt("return");
+
+          case 7:
+            if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+              _context13.next = 10;
+              break;
+            }
+
+            /* await */
+            $$b.alert(uiStrings$1.notification.dupeLayerName);
+            return _context13.abrupt("return");
+
+          case 10:
+            svgCanvas.createLayer(newName);
+            updateContextPanel();
+            populateLayers();
+
+          case 13:
+          case "end":
+            return _context13.stop();
+        }
       }
-
-      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-        $$b.alert(uiStrings$1.notification.dupeLayerName);
-        return;
-      }
-
-      svgCanvas.createLayer(newName);
-      updateContextPanel();
-      populateLayers();
-    });
-  });
+    }, _callee13, this);
+  })));
+  /**
+   *
+   * @returns {undefined}
+   */
 
   function deleteLayer() {
     if (svgCanvas.deleteCurrentLayer()) {
@@ -32907,23 +34524,67 @@ editor.init = function () {
       $$b('#layerlist tr.layer:first').addClass('layersel');
     }
   }
+  /**
+   *
+   * @returns {undefined}
+   */
+
 
   function cloneLayer() {
-    var name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
-    $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name, function (newName) {
-      if (!newName) {
-        return;
-      }
+    return _cloneLayer.apply(this, arguments);
+  }
+  /**
+   *
+   * @returns {undefined}
+   */
 
-      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-        $$b.alert(uiStrings$1.notification.dupeLayerName);
-        return;
-      }
 
-      svgCanvas.cloneLayer(newName);
-      updateContextPanel();
-      populateLayers();
-    });
+  function _cloneLayer() {
+    _cloneLayer = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee19() {
+      var name, newName;
+      return regeneratorRuntime.wrap(function _callee19$(_context19) {
+        while (1) {
+          switch (_context19.prev = _context19.next) {
+            case 0:
+              name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
+              _context19.next = 3;
+              return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name);
+
+            case 3:
+              newName = _context19.sent;
+
+              if (newName) {
+                _context19.next = 6;
+                break;
+              }
+
+              return _context19.abrupt("return");
+
+            case 6:
+              if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                _context19.next = 9;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.dupeLayerName);
+              return _context19.abrupt("return");
+
+            case 9:
+              svgCanvas.cloneLayer(newName);
+              updateContextPanel();
+              populateLayers();
+
+            case 12:
+            case "end":
+              return _context19.stop();
+          }
+        }
+      }, _callee19, this);
+    }));
+    return _cloneLayer.apply(this, arguments);
   }
 
   function mergeLayer() {
@@ -32935,6 +34596,11 @@ editor.init = function () {
     updateContextPanel();
     populateLayers();
   }
+  /**
+   * @param {Integer} pos
+   * @returns {undefined}
+   */
+
 
   function moveLayer(pos) {
     var total = svgCanvas.getCurrentDrawing().getNumLayers();
@@ -32954,23 +34620,52 @@ editor.init = function () {
   $$b('#layer_down').click(function () {
     moveLayer(1);
   });
-  $$b('#layer_rename').click(function () {
-    // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
-    var oldName = $$b('#layerlist tr.layersel td.layername').text();
-    $$b.prompt(uiStrings$1.notification.enterNewLayerName, '', function (newName) {
-      if (!newName) {
-        return;
-      }
+  $$b('#layer_rename').click(
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee14() {
+    var oldName, newName;
+    return regeneratorRuntime.wrap(function _callee14$(_context14) {
+      while (1) {
+        switch (_context14.prev = _context14.next) {
+          case 0:
+            // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
+            oldName = $$b('#layerlist tr.layersel td.layername').text();
+            _context14.next = 3;
+            return $$b.prompt(uiStrings$1.notification.enterNewLayerName, '');
 
-      if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-        $$b.alert(uiStrings$1.notification.layerHasThatName);
-        return;
-      }
+          case 3:
+            newName = _context14.sent;
 
-      svgCanvas.renameCurrentLayer(newName);
-      populateLayers();
-    });
-  });
+            if (newName) {
+              _context14.next = 6;
+              break;
+            }
+
+            return _context14.abrupt("return");
+
+          case 6:
+            if (!(oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName))) {
+              _context14.next = 9;
+              break;
+            }
+
+            /* await */
+            $$b.alert(uiStrings$1.notification.layerHasThatName);
+            return _context14.abrupt("return");
+
+          case 9:
+            svgCanvas.renameCurrentLayer(newName);
+            populateLayers();
+
+          case 11:
+          case "end":
+            return _context14.stop();
+        }
+      }
+    }, _callee14, this);
+  })));
   var SIDEPANEL_MAXWIDTH = 300;
   var SIDEPANEL_OPENWIDTH = 150;
   var sidedrag = -1,
@@ -32986,10 +34681,15 @@ editor.init = function () {
     var rulerX = $$b('#ruler_x');
     $$b('#sidepanels').width('+=' + delta);
     $$b('#layerpanel').width('+=' + delta);
-    rulerX.css('right', parseInt(rulerX.css('right'), 10) + delta);
-    workarea.css('right', parseInt(workarea.css('right'), 10) + delta);
+    rulerX.css('right', parseInt(rulerX.css('right')) + delta);
+    workarea.css('right', parseInt(workarea.css('right')) + delta);
     svgCanvas.runExtensions('workareaResized');
   };
+  /**
+  * @param {Event} evt
+  * @returns {undefined}
+  */
+
 
   var resizeSidePanel = function resizeSidePanel(evt) {
     if (!allowmove) {
@@ -33062,6 +34762,9 @@ editor.init = function () {
   };
 
   $$b(window).bind('load resize', centerCanvas);
+  /**
+   * @implements {module:jQuerySpinButton.StepCallback}
+   */
 
   function stepFontSize(elem, step) {
     var origVal = Number(elem.value);
@@ -33090,6 +34793,10 @@ editor.init = function () {
 
     return sugVal;
   }
+  /**
+   * @implements {module:jQuerySpinButton.StepCallback}
+   */
+
 
   function stepZoom(elem, step) {
     var origVal = Number(elem.value);
@@ -33652,9 +35359,9 @@ editor.init = function () {
               keyval = opts.key;
             }
 
-            keyval += '';
+            keyval = String(keyval);
             var fn = opts.fn;
-            $$b.each(keyval.split('/'), function (i, key) {
+            $$b.each(keyval.split('/'), function (j, key) {
               $$b(document).bind('keydown', key, function (e) {
                 fn();
 
@@ -33676,6 +35383,8 @@ editor.init = function () {
               }
             }
           }
+
+          return true;
         }); // Setup flyouts
 
         setupFlyouts(flyouts); // Misc additional actions
@@ -33775,7 +35484,7 @@ editor.init = function () {
       toggleSidePanel();
     }
 
-    $$b('#rulers').toggle(!!curConfig.showRulers);
+    $$b('#rulers').toggle(Boolean(curConfig.showRulers));
 
     if (curConfig.showRulers) {
       $$b('#show_rulers')[0].checked = true;
@@ -33905,10 +35614,18 @@ editor.init = function () {
         break;
     }
   });
+  /**
+  * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}
+  * @param {"dupe"|"delete"|"merge_down"|"merge_all"} action
+  * @param {external:jQuery} el
+  * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos
+  * @returns {undefined}
+  */
 
   var lmenuFunc = function lmenuFunc(action, el, pos) {
     switch (action) {
       case 'dupe':
+        /* await */
         cloneLayer();
         break;
 
@@ -33942,6 +35659,9 @@ editor.init = function () {
   });
   $$b('#cmenu_canvas li').disableContextMenu();
   canvMenu.enableContextMenuItems('#delete,#cut,#copy');
+  /**
+   * @returns {undefined}
+   */
 
   function enableOrDisableClipboard() {
     var svgeditClipboard;
@@ -33974,6 +35694,8 @@ editor.init = function () {
 
       return uiStrings$1.notification.unsavedChanges;
     }
+
+    return true;
   });
   /**
   * Expose the `uiStrings`.
@@ -33985,36 +35707,48 @@ editor.init = function () {
     return uiStrings$1;
   };
   /**
-  * @callback module:SVGEditor.OpenPrepCallback
-  * @param {boolean} noChanges
-  * @returns {undefined}
-  */
-
-  /**
-  * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback
-  * @returns {undefined}
+  * @returns {Promise} Resolves to boolean indicating `true` if there were no changes
+  *  and `false` after the user confirms.
   */
 
 
-  editor.openPrep = function (func) {
+  editor.openPrep = function () {
     $$b('#main_menu').hide();
 
     if (undoMgr.getUndoStackSize() === 0) {
-      func(true);
-    } else {
-      $$b.confirm(uiStrings$1.notification.QwantToOpen, func);
+      return true;
     }
+
+    return $$b.confirm(uiStrings$1.notification.QwantToOpen);
   };
+  /**
+   *
+   * @param {Event} e
+   * @returns {undefined}
+   */
+
 
   function onDragEnter(e) {
     e.stopPropagation();
     e.preventDefault(); // and indicator should be displayed here, such as "drop files here"
   }
+  /**
+   *
+   * @param {Event} e
+   * @returns {undefined}
+   */
+
 
   function onDragOver(e) {
     e.stopPropagation();
     e.preventDefault();
   }
+  /**
+   *
+   * @param {Event} e
+   * @returns {undefined}
+   */
+
 
   function onDragLeave(e) {
     e.stopPropagation();
@@ -34026,6 +35760,10 @@ editor.init = function () {
 
 
   if (window.FileReader) {
+    /**
+    * @param {Event} e
+    * @returns {undefined}
+    */
     var importImage = function importImage(e) {
       $$b.process_cancel(uiStrings$1.notification.loadingImage);
       e.stopPropagation();
@@ -34043,72 +35781,79 @@ editor.init = function () {
       else */
 
 
-      if (file.type.includes('image')) {
-        // Detected an image
-        // svg handling
-        var reader;
+      if (!file.type.includes('image')) {
+        return;
+      } // Detected an image
+      // svg handling
 
-        if (file.type.includes('svg')) {
-          reader = new FileReader();
 
-          reader.onloadend = function (e) {
-            var newElement = svgCanvas.importSvgString(e.target.result, true);
-            svgCanvas.ungroupSelectedElement();
-            svgCanvas.ungroupSelectedElement();
-            svgCanvas.groupSelectedElements();
+      var reader;
+
+      if (file.type.includes('svg')) {
+        reader = new FileReader();
+
+        reader.onloadend = function (ev) {
+          var newElement = svgCanvas.importSvgString(ev.target.result, true);
+          svgCanvas.ungroupSelectedElement();
+          svgCanvas.ungroupSelectedElement();
+          svgCanvas.groupSelectedElements();
+          svgCanvas.alignSelectedElements('m', 'page');
+          svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
+
+          svgCanvas.selectOnly([newElement]);
+          $$b('#dialog_box').hide();
+        };
+
+        reader.readAsText(file);
+      } else {
+        // bitmap handling
+        reader = new FileReader();
+
+        reader.onloadend = function (_ref27) {
+          var result = _ref27.target.result;
+
+          /**
+          * Insert the new image until we know its dimensions
+          * @param {Float} width
+          * @param {Float} height
+          * @returns {undefined}
+          */
+          var insertNewImage = function insertNewImage(width, height) {
+            var newImage = svgCanvas.addSVGElementFromJson({
+              element: 'image',
+              attr: {
+                x: 0,
+                y: 0,
+                width: width,
+                height: height,
+                id: svgCanvas.getNextId(),
+                style: 'pointer-events:inherit'
+              }
+            });
+            svgCanvas.setHref(newImage, result);
+            svgCanvas.selectOnly([newImage]);
             svgCanvas.alignSelectedElements('m', 'page');
-            svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
-
-            svgCanvas.selectOnly([newElement]);
+            svgCanvas.alignSelectedElements('c', 'page');
+            updateContextPanel();
             $$b('#dialog_box').hide();
+          }; // create dummy img so we know the default dimensions
+
+
+          var imgWidth = 100;
+          var imgHeight = 100;
+          var img = new Image();
+          img.style.opacity = 0;
+
+          img.onload = function () {
+            imgWidth = img.offsetWidth || img.naturalWidth || img.width;
+            imgHeight = img.offsetHeight || img.naturalHeight || img.height;
+            insertNewImage(imgWidth, imgHeight);
           };
 
-          reader.readAsText(file);
-        } else {
-          // bitmap handling
-          reader = new FileReader();
+          img.src = result;
+        };
 
-          reader.onloadend = function (_ref21) {
-            var result = _ref21.target.result;
-
-            // let's insert the new image until we know its dimensions
-            var insertNewImage = function insertNewImage(width, height) {
-              var newImage = svgCanvas.addSVGElementFromJson({
-                element: 'image',
-                attr: {
-                  x: 0,
-                  y: 0,
-                  width: width,
-                  height: height,
-                  id: svgCanvas.getNextId(),
-                  style: 'pointer-events:inherit'
-                }
-              });
-              svgCanvas.setHref(newImage, result);
-              svgCanvas.selectOnly([newImage]);
-              svgCanvas.alignSelectedElements('m', 'page');
-              svgCanvas.alignSelectedElements('c', 'page');
-              updateContextPanel();
-              $$b('#dialog_box').hide();
-            }; // create dummy img so we know the default dimensions
-
-
-            var imgWidth = 100;
-            var imgHeight = 100;
-            var img = new Image();
-            img.style.opacity = 0;
-
-            img.onload = function () {
-              imgWidth = img.offsetWidth || img.naturalWidth || img.width;
-              imgHeight = img.offsetHeight || img.naturalHeight || img.height;
-              insertNewImage(imgWidth, imgHeight);
-            };
-
-            img.src = result;
-          };
-
-          reader.readAsDataURL(file);
-        }
+        reader.readAsDataURL(file);
       }
     };
 
@@ -34116,28 +35861,75 @@ editor.init = function () {
     workarea[0].addEventListener('dragover', onDragOver);
     workarea[0].addEventListener('dragleave', onDragLeave);
     workarea[0].addEventListener('drop', importImage);
-    var open = $$b('<input type="file">').click(function () {
-      var f = this;
-      editor.openPrep(function (ok) {
-        if (!ok) {
-          return;
+    var open = $$b('<input type="file">').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee16() {
+      var ok, reader;
+      return regeneratorRuntime.wrap(function _callee16$(_context16) {
+        while (1) {
+          switch (_context16.prev = _context16.next) {
+            case 0:
+              _context16.next = 2;
+              return editor.openPrep();
+
+            case 2:
+              ok = _context16.sent;
+
+              if (ok) {
+                _context16.next = 5;
+                break;
+              }
+
+              return _context16.abrupt("return");
+
+            case 5:
+              svgCanvas.clear();
+
+              if (this.files.length === 1) {
+                $$b.process_cancel(uiStrings$1.notification.loadingImage);
+                reader = new FileReader();
+
+                reader.onloadend =
+                /*#__PURE__*/
+                function () {
+                  var _ref29 = _asyncToGenerator(
+                  /*#__PURE__*/
+                  regeneratorRuntime.mark(function _callee15(e) {
+                    return regeneratorRuntime.wrap(function _callee15$(_context15) {
+                      while (1) {
+                        switch (_context15.prev = _context15.next) {
+                          case 0:
+                            _context15.next = 2;
+                            return loadSvgString(e.target.result);
+
+                          case 2:
+                            updateCanvas();
+
+                          case 3:
+                          case "end":
+                            return _context15.stop();
+                        }
+                      }
+                    }, _callee15, this);
+                  }));
+
+                  return function (_x6) {
+                    return _ref29.apply(this, arguments);
+                  };
+                }();
+
+                reader.readAsText(this.files[0]);
+              }
+
+            case 7:
+            case "end":
+              return _context16.stop();
+          }
         }
-
-        svgCanvas.clear();
-
-        if (f.files.length === 1) {
-          $$b.process_cancel(uiStrings$1.notification.loadingImage);
-          var reader = new FileReader();
-
-          reader.onloadend = function (e) {
-            loadSvgString(e.target.result);
-            updateCanvas();
-          };
-
-          reader.readAsText(f.files[0]);
-        }
-      });
-    });
+      }, _callee16, this);
+    })));
     $$b('#tool_open').show().prepend(open);
     var imgImport = $$b('<input type="file">').change(importImage);
     $$b('#tool_import').show().prepend(imgImport);
@@ -34160,24 +35952,26 @@ editor.init = function () {
   var setLang = editor.setLang =
   /*#__PURE__*/
   function () {
-    var _ref22 = _asyncToGenerator(
+    var _ref30 = _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee8(lang, allStrings) {
-      var oldLayerName, renameLayer, ext, elems;
-      return regeneratorRuntime.wrap(function _callee8$(_context8) {
+    regeneratorRuntime.mark(function _callee17(lang, allStrings) {
+      var _this = this;
+
+      var oldLayerName, renameLayer, elems;
+      return regeneratorRuntime.wrap(function _callee17$(_context17) {
         while (1) {
-          switch (_context8.prev = _context8.next) {
+          switch (_context17.prev = _context17.next) {
             case 0:
               editor.langChanged = true;
               $$b.pref('lang', lang);
               $$b('#lang_select').val(lang);
 
               if (allStrings) {
-                _context8.next = 5;
+                _context17.next = 5;
                 break;
               }
 
-              return _context8.abrupt("return");
+              return _context17.abrupt("return");
 
             case 5:
               $$b.extend(uiStrings$1, allStrings); // const notif = allStrings.notification; // Currently unused
@@ -34195,39 +35989,31 @@ editor.init = function () {
 
 
               if (!extsPreLang.length) {
-                _context8.next = 21;
+                _context17.next = 17;
                 break;
               }
 
-            case 12:
-              if (!extsPreLang.length) {
-                _context8.next = 19;
-                break;
-              }
+              _context17.next = 14;
+              return Promise.all(extsPreLang.map(function (ext) {
+                loadedExtensionNames.push(ext.name);
+                return ext.langReady({
+                  lang: lang,
+                  uiStrings: uiStrings$1,
+                  importLocale: getImportLocale({
+                    defaultLang: lang,
+                    defaultName: ext.name
+                  })
+                });
+              }));
 
-              ext = extsPreLang.shift();
-              loadedExtensionNames.push(ext.name);
-              _context8.next = 17;
-              return ext.langReady({
-                lang: lang,
-                uiStrings: uiStrings$1,
-                importLocale: getImportLocale({
-                  defaultLang: lang,
-                  defaultName: ext.name
-                })
-              });
+            case 14:
+              extsPreLang.length = 0;
+              _context17.next = 18;
+              break;
 
             case 17:
-              _context8.next = 12;
-              break;
-
-            case 19:
-              _context8.next = 22;
-              break;
-
-            case 21:
               loadedExtensionNames.forEach(function (loadedExtensionName) {
-                svgCanvas.runExtensions('langReady',
+                _this.runExtension(loadedExtensionName, 'langReady',
                 /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */
                 {
                   lang: lang,
@@ -34239,7 +36025,7 @@ editor.init = function () {
                 });
               });
 
-            case 22:
+            case 18:
               svgCanvas.runExtensions('langChanged',
               /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */
               lang); // Update flyout tooltips
@@ -34260,16 +36046,16 @@ editor.init = function () {
                 $$b('#tool_pos' + this.id.substr(10))[0].title = this.title;
               });
 
-            case 27:
+            case 23:
             case "end":
-              return _context8.stop();
+              return _context17.stop();
           }
         }
-      }, _callee8, this);
+      }, _callee17, this);
     }));
 
-    return function (_x6, _x7) {
-      return _ref22.apply(this, arguments);
+    return function (_x7, _x8) {
+      return _ref30.apply(this, arguments);
     };
   }();
 
@@ -34319,47 +36105,134 @@ editor.init = function () {
 };
 /**
 * @callback module:SVGEditor.ReadyCallback
-* @returns {undefined}
+* @returns {Promise|undefined}
 */
 
 /**
 * Queues a callback to be invoked when the editor is ready (or
 *   to be invoked immediately if it is already ready--i.e.,
-*   if `svgEditor.runCallbacks` has been run).
+*   if `runCallbacks` has been run).
 * @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke
-* @returns {undefined}
+* @returns {Promise} Resolves when all callbacks, including the supplied have resolved
 */
 
 
 editor.ready = function (cb) {
-  if (!isReady) {
-    callbacks.push(cb);
-  } else {
-    cb();
-  }
+  // eslint-disable-line promise/prefer-await-to-callbacks
+  return new Promise(function (resolve, reject) {
+    // eslint-disable-line promise/avoid-new
+    if (isReady) {
+      resolve(cb()); // eslint-disable-line callback-return, promise/prefer-await-to-callbacks
+
+      return;
+    }
+
+    callbacks.push([cb, resolve, reject]);
+  });
 };
 /**
 * Invokes the callbacks previous set by `svgEditor.ready`
-* @returns {undefined}
+* @returns {Promise} Resolves to `undefined` if all callbacks succeeded and rejects otherwise
 */
 
 
-editor.runCallbacks = function () {
-  callbacks.forEach(function (cb) {
-    cb();
-  });
-  isReady = true;
-};
+editor.runCallbacks =
+/*#__PURE__*/
+_asyncToGenerator(
+/*#__PURE__*/
+regeneratorRuntime.mark(function _callee20() {
+  return regeneratorRuntime.wrap(function _callee20$(_context20) {
+    while (1) {
+      switch (_context20.prev = _context20.next) {
+        case 0:
+          _context20.prev = 0;
+          _context20.next = 3;
+          return Promise.all(callbacks.map(function (_ref33) {
+            var _ref34 = _slicedToArray(_ref33, 1),
+                cb = _ref34[0];
+
+            return cb(); // eslint-disable-line promise/prefer-await-to-callbacks
+          }));
+
+        case 3:
+          _context20.next = 9;
+          break;
+
+        case 5:
+          _context20.prev = 5;
+          _context20.t0 = _context20["catch"](0);
+          callbacks.forEach(function (_ref35) {
+            var _ref36 = _slicedToArray(_ref35, 3),
+                reject = _ref36[2];
+
+            reject();
+          });
+          throw _context20.t0;
+
+        case 9:
+          callbacks.forEach(function (_ref37) {
+            var _ref38 = _slicedToArray(_ref37, 2),
+                resolve = _ref38[1];
+
+            resolve();
+          });
+          isReady = true;
+
+        case 11:
+        case "end":
+          return _context20.stop();
+      }
+    }
+  }, _callee20, this, [[0, 5]]);
+}));
 /**
 * @param {string} str The SVG string to load
-* @returns {undefined}
+* @param {PlainObject} [opts={}]
+* @param {boolean} [opts.noAlert=false] Option to avoid alert to user and instead get rejected promise
+* @returns {Promise}
 */
 
-
 editor.loadFromString = function (str) {
-  editor.ready(function () {
-    loadSvgString(str);
-  });
+  var _ref39 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+      noAlert = _ref39.noAlert;
+
+  editor.ready(
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee21() {
+    return regeneratorRuntime.wrap(function _callee21$(_context21) {
+      while (1) {
+        switch (_context21.prev = _context21.next) {
+          case 0:
+            _context21.prev = 0;
+            _context21.next = 3;
+            return loadSvgString(str, {
+              noAlert: noAlert
+            });
+
+          case 3:
+            _context21.next = 9;
+            break;
+
+          case 5:
+            _context21.prev = 5;
+            _context21.t0 = _context21["catch"](0);
+
+            if (!noAlert) {
+              _context21.next = 9;
+              break;
+            }
+
+            throw _context21.t0;
+
+          case 9:
+          case "end":
+            return _context21.stop();
+        }
+      }
+    }, _callee21, this, [[0, 5]]);
+  })));
 };
 /**
 * Not presently in use.
@@ -34381,52 +36254,70 @@ editor.disableUI = function (featList) {// $(function () {
 
 /**
 * @param {string} url URL from which to load an SVG string via Ajax
-* @param {PlainObject} [opts] May contain properties: `cache`, `callback`
-* @param {boolean} opts.cache
-* @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success
-* @returns {undefined}
+* @param {PlainObject} [opts={}] May contain properties: `cache`, `callback`
+* @param {boolean} [opts.cache]
+* @param {boolean} [opts.noAlert]
+* @returns {Promise} Resolves to `undefined` or rejects upon bad loading of
+*   the SVG (or upon failure to parse the loaded string) when `noAlert` is
+*   enabled
 */
 
 
-editor.loadFromURL = function (url, opts) {
-  if (!opts) {
-    opts = {};
-  }
+editor.loadFromURL = function (url) {
+  var _ref41 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+      cache = _ref41.cache,
+      noAlert = _ref41.noAlert;
 
-  var _opts = opts,
-      cache = _opts.cache,
-      cb = _opts.callback;
-  editor.ready(function () {
-    $$b.ajax({
-      url: url,
-      dataType: 'text',
-      cache: !!cache,
-      beforeSend: function beforeSend() {
-        $$b.process_cancel(uiStrings$1.notification.loadingImage);
-      },
-      success: function success(str) {
-        loadSvgString(str, cb);
-      },
-      error: function error(xhr, stat, err) {
-        if (xhr.status !== 404 && xhr.responseText) {
-          loadSvgString(xhr.responseText, cb);
-        } else {
-          $$b.alert(uiStrings$1.notification.URLloadFail + ': \n' + err, cb);
+  return editor.ready(function () {
+    return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
+      $$b.ajax({
+        url: url,
+        dataType: 'text',
+        cache: Boolean(cache),
+        beforeSend: function beforeSend() {
+          $$b.process_cancel(uiStrings$1.notification.loadingImage);
+        },
+        success: function success(str) {
+          resolve(loadSvgString(str, {
+            noAlert: noAlert
+          }));
+        },
+        error: function error(xhr, stat, err) {
+          if (xhr.status !== 404 && xhr.responseText) {
+            resolve(loadSvgString(xhr.responseText, {
+              noAlert: noAlert
+            }));
+            return;
+          }
+
+          if (noAlert) {
+            reject(new Error('URLLoadFail'));
+            return;
+          }
+
+          $$b.alert(uiStrings$1.notification.URLLoadFail + ': \n' + err);
+          resolve();
+        },
+        complete: function complete() {
+          $$b('#dialog_box').hide();
         }
-      },
-      complete: function complete() {
-        $$b('#dialog_box').hide();
-      }
+      });
     });
   });
 };
 /**
 * @param {string} str The Data URI to base64-decode (if relevant) and load
-* @returns {undefined}
+* @param {PlainObject} [opts={}]
+* @param {boolean} [opts.noAlert]
+* @returns {Promise} Resolves to `undefined` and rejects if loading SVG string fails and `noAlert` is enabled
 */
 
 
 editor.loadFromDataURI = function (str) {
+  var _ref42 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+      noAlert = _ref42.noAlert;
+
   editor.ready(function () {
     var base64 = false;
     var pre = str.match(/^data:image\/svg\+xml;base64,/);
@@ -34442,7 +36333,9 @@ editor.loadFromDataURI = function (str) {
     }
 
     var src = str.slice(pre.length);
-    loadSvgString(base64 ? decode64(src) : decodeURIComponent(src));
+    return loadSvgString(base64 ? decode64(src) : decodeURIComponent(src), {
+      noAlert: noAlert
+    });
   });
 };
 /**
@@ -34473,15 +36366,17 @@ editor.ready(function () {
 var extensionsAdded = false;
 var messageQueue = [];
 /**
- * @param {Any} data
- * @param {string} origin
+ * @param {PlainObject} info
+ * @param {Any} info.data
+ * @param {string} info.origin
  * @fires module:svgcanvas.SvgCanvas#event:message
  * @returns {undefined}
  */
 
-var messageListener = function messageListener(_ref23) {
-  var data = _ref23.data,
-      origin = _ref23.origin;
+var messageListener = function messageListener(_ref43) {
+  var data = _ref43.data,
+      origin = _ref43.origin;
+  // eslint-disable-line no-shadow
   // console.log('data, origin, extensionsAdded', data, origin, extensionsAdded);
   var messageObj = {
     data: data,
@@ -34500,9 +36395,33 @@ var messageListener = function messageListener(_ref23) {
 window.addEventListener('message', messageListener); // Run init once DOM is loaded
 // jQuery(editor.init);
 
-Promise.resolve().then(function () {
-  // We wait a micro-task to let the svgEditor variable be defined for module checks
-  editor.init();
-});
+_asyncToGenerator(
+/*#__PURE__*/
+regeneratorRuntime.mark(function _callee22() {
+  return regeneratorRuntime.wrap(function _callee22$(_context22) {
+    while (1) {
+      switch (_context22.prev = _context22.next) {
+        case 0:
+          _context22.prev = 0;
+          _context22.next = 3;
+          return Promise.resolve();
+
+        case 3:
+          editor.init();
+          _context22.next = 9;
+          break;
+
+        case 6:
+          _context22.prev = 6;
+          _context22.t0 = _context22["catch"](0);
+          console.error(_context22.t0); // eslint-disable-line no-console
+
+        case 9:
+        case "end":
+          return _context22.stop();
+      }
+    }
+  }, _callee22, this, [[0, 6]]);
+}))();
 
 export default editor;
diff --git a/dist/index-es.min.js b/dist/index-es.min.js
index 0c560208..656f6300 100644
--- a/dist/index-es.min.js
+++ b/dist/index-es.min.js
@@ -1,2 +1,2 @@
-function _typeof(e){return(_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function asyncGeneratorStep(e,t,n,a,r,i,o){try{var s=e[i](o),l=s.value}catch(e){return void n(e)}s.done?t(l):Promise.resolve(l).then(a,r)}function _asyncToGenerator(e){return function(){var t=this,n=arguments;return new Promise(function(a,r){var i=e.apply(t,n);function o(e){asyncGeneratorStep(i,a,r,o,s,"next",e)}function s(e){asyncGeneratorStep(i,a,r,o,s,"throw",e)}o(void 0)})}}function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function _defineProperties(e,t){for(var n=0;n<t.length;n++){var a=t[n];a.enumerable=a.enumerable||!1,a.configurable=!0,"value"in a&&(a.writable=!0),Object.defineProperty(e,a.key,a)}}function _createClass(e,t,n){return t&&_defineProperties(e.prototype,t),n&&_defineProperties(e,n),e}function _extends(){return(_extends=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var a in n)Object.prototype.hasOwnProperty.call(n,a)&&(e[a]=n[a])}return e}).apply(this,arguments)}function _inherits(e,t){if("function"!=typeof t&&null!==t)throw new TypeError("Super expression must either be null or a function");e.prototype=Object.create(t&&t.prototype,{constructor:{value:e,writable:!0,configurable:!0}}),t&&_setPrototypeOf(e,t)}function _getPrototypeOf(e){return(_getPrototypeOf=Object.setPrototypeOf?Object.getPrototypeOf:function(e){return e.__proto__||Object.getPrototypeOf(e)})(e)}function _setPrototypeOf(e,t){return(_setPrototypeOf=Object.setPrototypeOf||function(e,t){return e.__proto__=t,e})(e,t)}function _assertThisInitialized(e){if(void 0===e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return e}function _possibleConstructorReturn(e,t){return!t||"object"!=typeof t&&"function"!=typeof t?_assertThisInitialized(e):t}function _slicedToArray(e,t){return _arrayWithHoles(e)||_iterableToArrayLimit(e,t)||_nonIterableRest()}function _toConsumableArray(e){return _arrayWithoutHoles(e)||_iterableToArray(e)||_nonIterableSpread()}function _arrayWithoutHoles(e){if(Array.isArray(e)){for(var t=0,n=new Array(e.length);t<e.length;t++)n[t]=e[t];return n}}function _arrayWithHoles(e){if(Array.isArray(e))return e}function _iterableToArray(e){if(Symbol.iterator in Object(e)||"[object Arguments]"===Object.prototype.toString.call(e))return Array.from(e)}function _iterableToArrayLimit(e,t){var n=[],a=!0,r=!1,i=void 0;try{for(var o,s=e[Symbol.iterator]();!(a=(o=s.next()).done)&&(n.push(o.value),!t||n.length!==t);a=!0);}catch(e){r=!0,i=e}finally{try{a||null==s.return||s.return()}finally{if(r)throw i}}return n}function _nonIterableSpread(){throw new TypeError("Invalid attempt to spread non-iterable instance")}function _nonIterableRest(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}function touchHandler(e){var t=e.changedTouches,n=t[0],a="";switch(e.type){case"touchstart":a="mousedown";break;case"touchmove":a="mousemove";break;case"touchend":a="mouseup";break;default:return}var r=n.screenX,i=n.screenY,o=n.clientX,s=n.clientY,l=new MouseEvent(a,{bubbles:!0,cancelable:!0,view:window,detail:1,screenX:r,screenY:i,clientX:o,clientY:s,ctrlKey:!1,altKey:!1,shiftKey:!1,metaKey:!1,button:0,relatedTarget:null});t.length<2&&(n.target.dispatchEvent(l),e.preventDefault())}document.addEventListener("touchstart",touchHandler,!0),document.addEventListener("touchmove",touchHandler,!0),document.addEventListener("touchend",touchHandler,!0),document.addEventListener("touchcancel",touchHandler,!0);var NS={HTML:"http://www.w3.org/1999/xhtml",MATH:"http://www.w3.org/1998/Math/MathML",SE:"http://svg-edit.googlecode.com",SVG:"http://www.w3.org/2000/svg",XLINK:"http://www.w3.org/1999/xlink",XML:"http://www.w3.org/XML/1998/namespace",XMLNS:"http://www.w3.org/2000/xmlns/"},getReverseNS=function(){var e={};return Object.entries(NS).forEach(function(t){var n=_slicedToArray(t,2),a=n[0],r=n[1];e[r]=a.toLowerCase()}),e};!function(){if(!("SVGPathSeg"in window)){var e=function(){function e(t,n,a){_classCallCheck(this,e),this.pathSegType=t,this.pathSegTypeAsLetter=n,this._owningPathSegList=a}return _createClass(e,[{key:"_segmentChanged",value:function(){this._owningPathSegList&&this._owningPathSegList.segmentChanged(this)}}]),e}();e.prototype.classname="SVGPathSeg",e.PATHSEG_UNKNOWN=0,e.PATHSEG_CLOSEPATH=1,e.PATHSEG_MOVETO_ABS=2,e.PATHSEG_MOVETO_REL=3,e.PATHSEG_LINETO_ABS=4,e.PATHSEG_LINETO_REL=5,e.PATHSEG_CURVETO_CUBIC_ABS=6,e.PATHSEG_CURVETO_CUBIC_REL=7,e.PATHSEG_CURVETO_QUADRATIC_ABS=8,e.PATHSEG_CURVETO_QUADRATIC_REL=9,e.PATHSEG_ARC_ABS=10,e.PATHSEG_ARC_REL=11,e.PATHSEG_LINETO_HORIZONTAL_ABS=12,e.PATHSEG_LINETO_HORIZONTAL_REL=13,e.PATHSEG_LINETO_VERTICAL_ABS=14,e.PATHSEG_LINETO_VERTICAL_REL=15,e.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS=16,e.PATHSEG_CURVETO_CUBIC_SMOOTH_REL=17,e.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS=18,e.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL=19;var t=function(t){function n(t){return _classCallCheck(this,n),_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_CLOSEPATH,"z",t))}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegClosePath]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter}},{key:"clone",value:function(){return new n(void 0)}}]),n}(),n=function(t){function n(t,a,r){var i;return _classCallCheck(this,n),(i=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_MOVETO_ABS,"M",t)))._x=a,i._y=r,i}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegMovetoAbs]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._x+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._x,this._y)}}]),n}();Object.defineProperties(n.prototype,{x:{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0},y:{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0}});var a=function(t){function n(t,a,r){var i;return 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this._currentIndex<this._endIndex}},{key:"_skipOptionalSpacesOrDelimiter",value:function(){return!(this._currentIndex<this._endIndex&&!this._isCurrentSpace()&&","!==this._string.charAt(this._currentIndex))&&(this._skipOptionalSpaces()&&this._currentIndex<this._endIndex&&","===this._string.charAt(this._currentIndex)&&(this._currentIndex++,this._skipOptionalSpaces()),this._currentIndex<this._endIndex)}},{key:"hasMoreData",value:function(){return this._currentIndex<this._endIndex}},{key:"peekSegmentType",value:function(){var e=this._string[this._currentIndex];return this._pathSegTypeFromChar(e)}},{key:"_pathSegTypeFromChar",value:function(e){switch(e){case"Z":case"z":return SVGPathSeg.PATHSEG_CLOSEPATH;case"M":return SVGPathSeg.PATHSEG_MOVETO_ABS;case"m":return SVGPathSeg.PATHSEG_MOVETO_REL;case"L":return SVGPathSeg.PATHSEG_LINETO_ABS;case"l":return SVGPathSeg.PATHSEG_LINETO_REL;case"C":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;case"c":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;case"Q":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;case"q":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;case"A":return SVGPathSeg.PATHSEG_ARC_ABS;case"a":return SVGPathSeg.PATHSEG_ARC_REL;case"H":return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;case"h":return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;case"V":return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;case"v":return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;case"S":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;case"s":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;case"T":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;case"t":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;default:return SVGPathSeg.PATHSEG_UNKNOWN}}},{key:"_nextCommandHelper",value:function(e,t){return("+"===e||"-"===e||"."===e||e>="0"&&e<="9")&&t!==SVGPathSeg.PATHSEG_CLOSEPATH?t===SVGPathSeg.PATHSEG_MOVETO_ABS?SVGPathSeg.PATHSEG_LINETO_ABS:t===SVGPathSeg.PATHSEG_MOVETO_REL?SVGPathSeg.PATHSEG_LINETO_REL:t:SVGPathSeg.PATHSEG_UNKNOWN}},{key:"initialCommandIsMoveTo",value:function(){if(!this.hasMoreData())return!0;var e=this.peekSegmentType();return e===SVGPathSeg.PATHSEG_MOVETO_ABS||e===SVGPathSeg.PATHSEG_MOVETO_REL}},{key:"_parseNumber",value:function(){var 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u=t+a;if(u*=r,e&&(u*=Math.pow(10,i*e)),o!==this._currentIndex)return this._skipOptionalSpacesOrDelimiter(),u}}},{key:"_parseArcFlag",value:function(){if(!(this._currentIndex>=this._endIndex)){var e=!1,t=this._string.charAt(this._currentIndex++);if("0"===t)e=!1;else{if("1"!==t)return;e=!0}return this._skipOptionalSpacesOrDelimiter(),e}}},{key:"parseSegment",value:function(){var e=this._string[this._currentIndex],n=this._pathSegTypeFromChar(e);if(n===SVGPathSeg.PATHSEG_UNKNOWN){if(this._previousCommand===SVGPathSeg.PATHSEG_UNKNOWN)return null;if((n=this._nextCommandHelper(e,this._previousCommand))===SVGPathSeg.PATHSEG_UNKNOWN)return null}else this._currentIndex++;switch(this._previousCommand=n,n){case SVGPathSeg.PATHSEG_MOVETO_REL:return new SVGPathSegMovetoRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_MOVETO_ABS:return new SVGPathSegMovetoAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_REL:return new SVGPathSegLinetoRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_ABS:return new SVGPathSegLinetoAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:return new SVGPathSegLinetoHorizontalRel(t,this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:return new SVGPathSegLinetoHorizontalAbs(t,this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:return new SVGPathSegLinetoVerticalRel(t,this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:return new SVGPathSegLinetoVerticalAbs(t,this._parseNumber());case SVGPathSeg.PATHSEG_CLOSEPATH:return this._skipOptionalSpaces(),new SVGPathSegClosePath(t);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:var a={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicRel(t,a.x,a.y,a.x1,a.y1,a.x2,a.y2);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:var r={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicAbs(t,r.x,r.y,r.x1,r.y1,r.x2,r.y2);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:var i={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicSmoothRel(t,i.x,i.y,i.x2,i.y2);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:var o={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicSmoothAbs(t,o.x,o.y,o.x2,o.y2);case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:var s={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoQuadraticRel(t,s.x,s.y,s.x1,s.y1);case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:var l={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoQuadraticAbs(t,l.x,l.y,l.x1,l.y1);case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:return new SVGPathSegCurvetoQuadraticSmoothRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:return new SVGPathSegCurvetoQuadraticSmoothAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_ARC_REL:var c={x1:this._parseNumber(),y1:this._parseNumber(),arcAngle:this._parseNumber(),arcLarge:this._parseArcFlag(),arcSweep:this._parseArcFlag(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegArcRel(t,c.x,c.y,c.x1,c.y1,c.arcAngle,c.arcLarge,c.arcSweep);case SVGPathSeg.PATHSEG_ARC_ABS:var u={x1:this._parseNumber(),y1:this._parseNumber(),arcAngle:this._parseNumber(),arcLarge:this._parseArcFlag(),arcSweep:this._parseArcFlag(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegArcAbs(t,u.x,u.y,u.x1,u.y1,u.arcAngle,u.arcLarge,u.arcSweep);default:throw new Error("Unknown path seg 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l=svgroot.createSVGTransform(),c="set"+n.charAt(0).toUpperCase()+n.slice(1),u="matrix"===n?[s]:i;"scale"===n&&1===u.length?u.push(u[0]):"translate"===n&&1===u.length?u.push(0):"rotate"===n&&1===u.length&&u.push(0,0),l[c].apply(l,u),e._list.appendItem(l)}()},this._removeFromOtherLists=function(e){if(e){var t=!1;for(var n in listMap_){for(var a=listMap_[n],r=0,i=a._xforms.length;r<i;++r)if(a._xforms[r]===e){t=!0,a.removeItem(r);break}if(t)break}}},this.numberOfItems=0}return _createClass(e,[{key:"clear",value:function(){this.numberOfItems=0,this._xforms=[]}},{key:"initialize",value:function(e){this.numberOfItems=1,this._removeFromOtherLists(e),this._xforms=[e]}},{key:"getItem",value:function(e){if(e<this.numberOfItems&&e>=0)return this._xforms[e];var t=new Error("DOMException with code=INDEX_SIZE_ERR");throw t.code=1,t}},{key:"insertItemBefore",value:function(e,t){var n=null;if(t>=0)if(t<this.numberOfItems){this._removeFromOtherLists(e);var a,r=new 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r=a.x;typeMap_={em:a.width,ex:a.height,in:r,cm:r/2.54,mm:r/25.4,pt:r/72,pc:r/6,px:1,"%":0}},getTypeMap=function(){return typeMap_},shortFloat=function e(t){var n=elementContainer_.getRoundDigits();return isNaN(t)?Array.isArray(t)?e(t[0])+","+e(t[1]):parseFloat(t).toFixed(n)-0:+(+t).toFixed(n)},convertUnit=function(e,t){return t=t||elementContainer_.getBaseUnit(),shortFloat(e/typeMap_[t])},setUnitAttr=function(e,t,n){e.setAttribute(t,n)},convertToNum=function(e,t){if(!isNaN(t))return t-0;if("%"===t.substr(-1)){var n=t.substr(0,t.length-1)/100,a=elementContainer_.getWidth(),r=elementContainer_.getHeight();return wAttrs.includes(e)?n*a:hAttrs.includes(e)?n*r:n*Math.sqrt(a*a+r*r)/Math.sqrt(2)}var i=t.substr(-2);return t.substr(0,t.length-2)*typeMap_[i]},isValidUnit=function(e,t,n){if(unitAttrs.includes(e))return!isNaN(t)||(t=t.toLowerCase(),Object.keys(typeMap_).some(function(e){return new RegExp("^-?[\\d\\.]+"+e+"$").test(t)}));if("id"===e){var a=!1;try{var r=elementContainer_.getElement(t);a=null==r||r===n}catch(e){}return a}return!0},HistoryEventTypes={BEFORE_APPLY:"before_apply",AFTER_APPLY:"after_apply",BEFORE_UNAPPLY:"before_unapply",AFTER_UNAPPLY:"after_unapply"},Command=function(){function e(){_classCallCheck(this,e)}return _createClass(e,[{key:"getText",value:function(){return this.text}}]),e}(),MoveElementCommand=function(e){function t(e,n,a,r){var i;return _classCallCheck(this,t),(i=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,i.text=r?"Move "+e.tagName+" to "+r:"Move "+e.tagName,i.oldNextSibling=n,i.oldParent=a,i.newNextSibling=e.nextSibling,i.newParent=e.parentNode,i}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.MoveElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this),this.elem=this.newParent.insertBefore(this.elem,this.newNextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this),this.elem=this.oldParent.insertBefore(this.elem,this.oldNextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){return[this.elem]}}]),t}();MoveElementCommand.type=MoveElementCommand.prototype.type;var InsertElementCommand=function(e){function t(e,n){var a;return _classCallCheck(this,t),(a=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,a.text=n||"Create "+e.tagName,a.parent=e.parentNode,a.nextSibling=a.elem.nextSibling,a}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.InsertElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this),this.elem=this.parent.insertBefore(this.elem,this.nextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this),this.parent=this.elem.parentNode,this.elem=this.elem.parentNode.removeChild(this.elem),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){return[this.elem]}}]),t}();InsertElementCommand.type=InsertElementCommand.prototype.type;var RemoveElementCommand=function(e){function t(e,n,a,r){var i;return _classCallCheck(this,t),(i=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,i.text=r||"Delete "+e.tagName,i.nextSibling=n,i.parent=a,removeElementFromListMap(e),i}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.RemoveElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this),removeElementFromListMap(this.elem),this.parent=this.elem.parentNode,this.elem=this.parent.removeChild(this.elem),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this),removeElementFromListMap(this.elem),null==this.nextSibling&&window.console&&console.log("Error: reference element was lost"),this.parent.insertBefore(this.elem,this.nextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){return[this.elem]}}]),t}();RemoveElementCommand.type=RemoveElementCommand.prototype.type;var ChangeElementCommand=function(e){function t(e,n,a){var r;for(var i in _classCallCheck(this,t),(r=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,r.text=a?"Change "+e.tagName+" "+a:"Change "+e.tagName,r.newValues={},r.oldValues=n,n)r.newValues[i]="#text"===i?e.textContent:"#href"===i?getHref(e):e.getAttribute(i);return r}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.ChangeElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this);var t=!1;for(var n in this.newValues)this.newValues[n]?"#text"===n?this.elem.textContent=this.newValues[n]:"#href"===n?setHref(this.elem,this.newValues[n]):this.elem.setAttribute(n,this.newValues[n]):"#text"===n?this.elem.textContent="":(this.elem.setAttribute(n,""),this.elem.removeAttribute(n)),"transform"===n&&(t=!0);if(!t){var a=getRotationAngle(this.elem);if(a){var r=this.elem.getBBox(),i=["rotate(",a," ",r.x+r.width/2,",",r.y+r.height/2,")"].join("");i!==this.elem.getAttribute("transform")&&this.elem.setAttribute("transform",i)}}return e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this),!0}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this);var t=!1;for(var n in this.oldValues)this.oldValues[n]?"#text"===n?this.elem.textContent=this.oldValues[n]:"#href"===n?setHref(this.elem,this.oldValues[n]):this.elem.setAttribute(n,this.oldValues[n]):"#text"===n?this.elem.textContent="":this.elem.removeAttribute(n),"transform"===n&&(t=!0);if(!t){var a=getRotationAngle(this.elem);if(a){var r=this.elem.getBBox(),i=["rotate(",a," ",r.x+r.width/2,",",r.y+r.height/2,")"].join("");i!==this.elem.getAttribute("transform")&&this.elem.setAttribute("transform",i)}}return removeElementFromListMap(this.elem),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this),!0}},{key:"elements",value:function(){return[this.elem]}}]),t}();ChangeElementCommand.type=ChangeElementCommand.prototype.type;var BatchCommand=function(e){function t(e){var n;return _classCallCheck(this,t),(n=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).text=e||"Batch Command",n.stack=[],n}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.BatchCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this);for(var t=this.stack.length,n=0;n<t;++n)this.stack[n].apply(e);e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this);for(var t=this.stack.length-1;t>=0;t--)this.stack[t].unapply(e);e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){for(var e=[],t=this.stack.length;t--;)for(var n=this.stack[t].elements(),a=n.length;a--;)e.includes(n[a])||e.push(n[a]);return e}},{key:"addSubCommand",value:function(e){this.stack.push(e)}},{key:"isEmpty",value:function(){return!this.stack.length}}]),t}();BatchCommand.type=BatchCommand.prototype.type;var newcx,newcy,oldcx,oldcy,angle,UndoManager=function(){function e(t){_classCallCheck(this,e),this.handler_=t||null,this.undoStackPointer=0,this.undoStack=[],this.undoChangeStackPointer=-1,this.undoableChangeStack=[]}return _createClass(e,[{key:"resetUndoStack",value:function(){this.undoStack=[],this.undoStackPointer=0}},{key:"getUndoStackSize",value:function(){return this.undoStackPointer}},{key:"getRedoStackSize",value:function(){return this.undoStack.length-this.undoStackPointer}},{key:"getNextUndoCommandText",value:function(){return this.undoStackPointer>0?this.undoStack[this.undoStackPointer-1].getText():""}},{key:"getNextRedoCommandText",value:function(){return this.undoStackPointer<this.undoStack.length?this.undoStack[this.undoStackPointer].getText():""}},{key:"undo",value:function(){this.undoStackPointer>0&&this.undoStack[--this.undoStackPointer].unapply(this.handler_)}},{key:"redo",value:function(){this.undoStackPointer<this.undoStack.length&&this.undoStack.length>0&&this.undoStack[this.undoStackPointer++].apply(this.handler_)}},{key:"addCommandToHistory",value:function(e){this.undoStackPointer<this.undoStack.length&&this.undoStack.length>0&&(this.undoStack=this.undoStack.splice(0,this.undoStackPointer)),this.undoStack.push(e),this.undoStackPointer=this.undoStack.length}},{key:"beginUndoableChange",value:function(e,t){for(var n=++this.undoChangeStackPointer,a=t.length,r=new Array(a),i=new Array(a);a--;){var o=t[a];null!=o&&(i[a]=o,r[a]=o.getAttribute(e))}this.undoableChangeStack[n]={attrName:e,oldValues:r,elements:i}}},{key:"finishUndoableChange",value:function(){for(var e=this.undoChangeStackPointer--,t=this.undoableChangeStack[e],n=t.attrName,a=new BatchCommand("Change "+n),r=t.elements.length;r--;){var i=t.elements[r];if(null!=i){var o={};o[n]=t.oldValues[r],o[n]!==i.getAttribute(n)&&a.addSubCommand(new ChangeElementCommand(i,o,n))}}return this.undoableChangeStack[e]=null,a}}]),e}(),history=Object.freeze({HistoryEventTypes:HistoryEventTypes,MoveElementCommand:MoveElementCommand,InsertElementCommand:InsertElementCommand,RemoveElementCommand:RemoveElementCommand,ChangeElementCommand:ChangeElementCommand,BatchCommand:BatchCommand,UndoManager:UndoManager}),NEAR_ZERO=1e-14,svg$1=document.createElementNS(NS.SVG,"svg"),transformPoint=function(e,t,n){return{x:n.a*e+n.c*t+n.e,y:n.b*e+n.d*t+n.f}},isIdentity=function(e){return 1===e.a&&0===e.b&&0===e.c&&1===e.d&&0===e.e&&0===e.f},matrixMultiply=function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];var a=t.reduceRight(function(e,t){return t.multiply(e)});return Math.abs(a.a)<NEAR_ZERO&&(a.a=0),Math.abs(a.b)<NEAR_ZERO&&(a.b=0),Math.abs(a.c)<NEAR_ZERO&&(a.c=0),Math.abs(a.d)<NEAR_ZERO&&(a.d=0),Math.abs(a.e)<NEAR_ZERO&&(a.e=0),Math.abs(a.f)<NEAR_ZERO&&(a.f=0),a},hasMatrixTransform=function(e){if(!e)return!1;for(var t=e.numberOfItems;t--;){var n=e.getItem(t);if(1===n.type&&!isIdentity(n.matrix))return!0}return!1},transformBox=function(e,t,n,a,r){var i=transformPoint(e,t,r),o=transformPoint(e+n,t,r),s=transformPoint(e,t+a,r),l=transformPoint(e+n,t+a,r),c=Math.min(i.x,o.x,s.x,l.x),u=Math.max(i.x,o.x,s.x,l.x),d=Math.min(i.y,o.y,s.y,l.y);return{tl:i,tr:o,bl:s,br:l,aabox:{x:c,y:d,width:u-c,height:Math.max(i.y,o.y,s.y,l.y)-d}}},transformListToTransform=function(e,t,n){if(null==e)return svg$1.createSVGTransformFromMatrix(svg$1.createSVGMatrix());if(t=t||0,n=n||e.numberOfItems-1,(t=parseInt(t,10))>(n=parseInt(n,10))){var a=n;n=t,t=a}for(var r=svg$1.createSVGMatrix(),i=t;i<=n;++i){var o=i>=0&&i<e.numberOfItems?e.getItem(i).matrix:svg$1.createSVGMatrix();r=matrixMultiply(r,o)}return svg$1.createSVGTransformFromMatrix(r)},getMatrix=function(e){var t=getTransformList(e);return transformListToTransform(t).matrix},snapToAngle=function(e,t,n,a){var r=Math.PI/4,i=n-e,o=a-t,s=Math.atan2(o,i),l=Math.sqrt(i*i+o*o),c=Math.round(s/r)*r;return{x:e+l*Math.cos(c),y:t+l*Math.sin(c),a:c}},rectsIntersect=function(e,t){return t.x<e.x+e.width&&t.x+t.width>e.x&&t.y<e.y+e.height&&t.y+t.height>e.y},$$1=jQuery,segData={2:["x","y"],4:["x","y"],6:["x","y","x1","y1","x2","y2"],8:["x","y","x1","y1"],10:["x","y","r1","r2","angle","largeArcFlag","sweepFlag"],12:["x"],14:["y"],16:["x","y","x2","y2"],18:["x","y"]},uiStrings={},setUiStrings=function(e){Object.assign(uiStrings,e.ui)},pathFuncs=[],linkControlPts=!0,pathData={},setLinkControlPoints=function(e){linkControlPts=e},path=null,editorContext_=null,init$1=function(e){editorContext_=e,pathFuncs=[0,"ClosePath"];$$1.each(["Moveto","Lineto","CurvetoCubic","CurvetoQuadratic","Arc","LinetoHorizontal","LinetoVertical","CurvetoCubicSmooth","CurvetoQuadraticSmooth"],function(e,t){pathFuncs.push(t+"Abs"),pathFuncs.push(t+"Rel")})},insertItemBefore=function(e,t,n){var a=e.pathSegList;if(supportsPathInsertItemBefore())a.insertItemBefore(t,n);else{for(var r=a.numberOfItems,i=[],o=0;o<r;o++){var s=a.getItem(o);i.push(s)}a.clear();for(var l=0;l<r;l++)l===n&&a.appendItem(t),a.appendItem(i[l])}},ptObjToArr=function(e,t){return segData[e].map(function(e){return t[e]})},getGripPt=function(e,t){var n=e.path,a={x:t?t.x:e.item.x,y:t?t.y:e.item.y};n.matrix&&(a=transformPoint(a.x,a.y,n.matrix));var r=editorContext_.getCurrentZoom();return a.x*=r,a.y*=r,a},getPointFromGrip=function(e,t){var n={x:e.x,y:e.y};t.matrix&&(e=transformPoint(n.x,n.y,t.imatrix),n.x=e.x,n.y=e.y);var a=editorContext_.getCurrentZoom();return n.x/=a,n.y/=a,n},addPointGrip=function(e,t,n){var a=getGripContainer(),r=getElem("pathpointgrip_"+e);if(!r){r=document.createElementNS(NS.SVG,"circle");var i={id:"pathpointgrip_"+e,display:"none",r:4,fill:"#0FF",stroke:"#00F","stroke-width":2,cursor:"move",style:"pointer-events:all"};"pathNodeTooltip"in uiStrings&&(i["xlink:title"]=uiStrings.pathNodeTooltip),assignAttributes(r,i),r=a.appendChild(r),$$1("#pathpointgrip_"+e).dblclick(function(){path&&path.setSegType()})}return t&&n&&assignAttributes(r,{cx:t,cy:n,display:"inline"}),r},getGripContainer=function(){var e=getElem("pathpointgrip_container");e||((e=getElem("selectorParentGroup").appendChild(document.createElementNS(NS.SVG,"g"))).id="pathpointgrip_container");return e},addCtrlGrip=function(e){var t=getElem("ctrlpointgrip_"+e);if(t)return t;t=document.createElementNS(NS.SVG,"circle");var n={id:"ctrlpointgrip_"+e,display:"none",r:4,fill:"#0FF",stroke:"#55F","stroke-width":1,cursor:"move",style:"pointer-events:all"};return"pathCtrlPtTooltip"in uiStrings&&(n["xlink:title"]=uiStrings.pathCtrlPtTooltip),assignAttributes(t,n),getGripContainer().append(t),t},getCtrlLine=function(e){var t=getElem("ctrlLine_"+e);return t||(t=document.createElementNS(NS.SVG,"line"),assignAttributes(t,{id:"ctrlLine_"+e,stroke:"#555","stroke-width":1,style:"pointer-events:none"}),getGripContainer().append(t),t)},getPointGrip=function(e,t){var n=e.index,a=addPointGrip(n);if(t){var r=getGripPt(e);assignAttributes(a,{cx:r.x,cy:r.y,display:"inline"})}return a},getControlPoints=function(e){var t=e.item,n=e.index;if(!("x1"in t&&"x2"in t))return null;var a={};getGripContainer();for(var r=[path.segs[n-1].item,t],i=1;i<3;i++){var o=n+"c"+i,s=a["c"+i+"_line"]=getCtrlLine(o),l=getGripPt(e,{x:t["x"+i],y:t["y"+i]}),c=getGripPt(e,{x:r[i-1].x,y:r[i-1].y});assignAttributes(s,{x1:l.x,y1:l.y,x2:c.x,y2:c.y,display:"inline"}),a["c"+i+"_line"]=s;var u=a["c"+i]=addCtrlGrip(o);assignAttributes(u,{cx:l.x,cy:l.y,display:"inline"}),a["c"+i]=u}return a},replacePathSeg=function(e,t,n,a){var r=a||path.elem,i=r["createSVGPathSeg"+pathFuncs[e]].apply(r,n);if(supportsPathReplaceItem())r.pathSegList.replaceItem(i,t);else{for(var o=r.pathSegList,s=o.numberOfItems,l=[],c=0;c<s;c++){var u=o.getItem(c);l.push(u)}o.clear();for(var d=0;d<s;d++)d===t?o.appendItem(i):o.appendItem(l[d])}},getSegSelector=function(e,t){var n=e.index,a=getElem("segline_"+n);if(!a){var r=getGripContainer();a=document.createElementNS(NS.SVG,"path"),assignAttributes(a,{id:"segline_"+n,display:"none",fill:"none",stroke:"#0FF","stroke-width":2,style:"pointer-events:none",d:"M0,0 0,0"}),r.append(a)}if(t){var i=e.prev;if(!i)return a.setAttribute("display","none"),a;var o=getGripPt(i);replacePathSeg(2,0,[o.x,o.y],a);for(var s=ptObjToArr(e.type,e.item),l=0;l<s.length;l+=2){var c=getGripPt(e,{x:s[l],y:s[l+1]});s[l]=c.x,s[l+1]=c.y}replacePathSeg(e.type,1,s,a)}return a},smoothControlPoints=function(e,t,n){var a=e.x-n.x,r=e.y-n.y,i=t.x-n.x,o=t.y-n.y;if(!(0===a&&0===r||0===i&&0===o)){var s=Math.sqrt(a*a+r*r),l=Math.sqrt(i*i+o*o),c=editorContext_.getSVGRoot().createSVGPoint(),u=editorContext_.getSVGRoot().createSVGPoint(),d=Math.atan2(r,a),h=Math.atan2(o,i);d<0&&(d+=2*Math.PI),h<0&&(h+=2*Math.PI);var p,g,f=Math.abs(d-h),m=Math.abs(Math.PI-f)/2;return d-h>0?(p=f<Math.PI?d+m:d-m,g=f<Math.PI?h-m:h+m):(p=f<Math.PI?d-m:d+m,g=f<Math.PI?h+m:h-m),c.x=s*Math.cos(p)+n.x,c.y=s*Math.sin(p)+n.y,u.x=l*Math.cos(g)+n.x,u.y=l*Math.sin(g)+n.y,[c,u]}},Segment=function(){function e(t,n){_classCallCheck(this,e),this.selected=!1,this.index=t,this.item=n,this.type=n.pathSegType,this.ctrlpts=[],this.ptgrip=null,this.segsel=null}return _createClass(e,[{key:"showCtrlPts",value:function(e){for(var t in this.ctrlpts)this.ctrlpts.hasOwnProperty(t)&&this.ctrlpts[t].setAttribute("display",e?"inline":"none")}},{key:"selectCtrls",value:function(e){$$1("#ctrlpointgrip_"+this.index+"c1, #ctrlpointgrip_"+this.index+"c2").attr("fill",e?"#0FF":"#EEE")}},{key:"show",value:function(e){this.ptgrip&&(this.ptgrip.setAttribute("display",e?"inline":"none"),this.segsel.setAttribute("display",e?"inline":"none"),this.showCtrlPts(e))}},{key:"select",value:function(e){this.ptgrip&&(this.ptgrip.setAttribute("stroke",e?"#0FF":"#00F"),this.segsel.setAttribute("display",e?"inline":"none"),this.ctrlpts&&this.selectCtrls(e),this.selected=e)}},{key:"addGrip",value:function(){this.ptgrip=getPointGrip(this,!0),this.ctrlpts=getControlPoints(this),this.segsel=getSegSelector(this,!0)}},{key:"update",value:function(e){if(this.ptgrip){var t=getGripPt(this);assignAttributes(this.ptgrip,{cx:t.x,cy:t.y}),getSegSelector(this,!0),this.ctrlpts&&(e&&(this.item=path.elem.pathSegList.getItem(this.index),this.type=this.item.pathSegType),getControlPoints(this))}}},{key:"move",value:function(e,t){var n=this.item,a=this.ctrlpts?[n.x+=e,n.y+=t,n.x1,n.y1,n.x2+=e,n.y2+=t]:[n.x+=e,n.y+=t];if(replacePathSeg(this.type,this.index,a),this.next&&this.next.ctrlpts){var r=this.next.item,i=[r.x,r.y,r.x1+=e,r.y1+=t,r.x2,r.y2];replacePathSeg(this.next.type,this.next.index,i)}if(this.mate){var o=this.mate.item,s=[o.x+=e,o.y+=t];replacePathSeg(this.mate.type,this.mate.index,s)}this.update(!0),this.next&&this.next.update(!0)}},{key:"setLinked",value:function(e){var t,n,a;if(2===e){if(n=1,!(t=this.next))return;a=this.item}else{if(n=2,!(t=this.prev))return;a=t.item}var r=t.item;r["x"+n]=a.x+(a.x-this.item["x"+e]),r["y"+n]=a.y+(a.y-this.item["y"+e]);var i=[r.x,r.y,r.x1,r.y1,r.x2,r.y2];replacePathSeg(t.type,t.index,i),t.update(!0)}},{key:"moveCtrl",value:function(e,t,n){var a=this.item;a["x"+e]+=t,a["y"+e]+=n;var r=[a.x,a.y,a.x1,a.y1,a.x2,a.y2];replacePathSeg(this.type,this.index,r),this.update(!0)}},{key:"setType",value:function(e,t){replacePathSeg(e,this.index,t),this.type=e,this.item=path.elem.pathSegList.getItem(this.index),this.showCtrlPts(6===e),this.ctrlpts=getControlPoints(this),this.update(!0)}}]),e}(),Path=function(){function e(t){if(_classCallCheck(this,e),!t||"path"!==t.tagName)throw new Error("svgedit.path.Path constructed without a <path> element");this.elem=t,this.segs=[],this.selected_pts=[],path=this,this.init()}return _createClass(e,[{key:"init",value:function(){$$1(getGripContainer()).find("*").each(function(){$$1(this).attr("display","none")});var e=this.elem.pathSegList,t=e.numberOfItems;this.segs=[],this.selected_pts=[],this.first_seg=null;for(var n=0;n<t;n++){var a=e.getItem(n),r=new Segment(n,a);r.path=this,this.segs.push(r)}for(var i=this.segs,o=null,s=0;s<t;s++){var l=i[s],c=s+1>=t?null:i[s+1],u=s-1<0?null:i[s-1];if(2===l.type){if(u&&1!==u.type){var d=i[o];d.next=i[o+1],d.next.prev=d,d.addGrip()}o=s}else if(c&&1===c.type)l.next=i[o+1],l.next.prev=l,l.mate=i[o],l.addGrip(),null==this.first_seg&&(this.first_seg=l);else if(c)1!==l.type&&(l.addGrip(),c&&2!==c.type&&(l.next=c,l.next.prev=l));else if(1!==l.type){var h=i[o];h.next=i[o+1],h.next.prev=h,h.addGrip(),l.addGrip(),this.first_seg||(this.first_seg=i[o])}}return this}},{key:"eachSeg",value:function(e){for(var t=this.segs.length,n=0;n<t;n++){if(!1===e.call(this.segs[n],n))break}}},{key:"addSeg",value:function(e){var t=this.segs[e];if(t.prev){var n,a,r,i=t.prev;switch(t.item.pathSegType){case 4:a=(t.item.x+i.item.x)/2,r=(t.item.y+i.item.y)/2,n=this.elem.createSVGPathSegLinetoAbs(a,r);break;case 6:var o=(i.item.x+t.item.x1)/2,s=(t.item.x1+t.item.x2)/2,l=(t.item.x2+t.item.x)/2,c=(o+s)/2,u=(s+l)/2;a=(c+u)/2;var d=(i.item.y+t.item.y1)/2,h=(t.item.y1+t.item.y2)/2,p=(t.item.y2+t.item.y)/2,g=(d+h)/2,f=(h+p)/2;r=(g+f)/2,n=this.elem.createSVGPathSegCurvetoCubicAbs(a,r,o,d,c,g);var m=[t.item.x,t.item.y,u,f,l,p];replacePathSeg(t.type,e,m)}insertItemBefore(this.elem,n,e)}}},{key:"deleteSeg",value:function(e){var t=this.segs[e],n=this.elem.pathSegList;t.show(!1);var a=t.next;if(t.mate){var r=[a.item.x,a.item.y];replacePathSeg(2,a.index,r),replacePathSeg(4,t.index,r),n.removeItem(t.mate.index)}else if(t.prev)n.removeItem(e);else{var i=[a.item.x,a.item.y];replacePathSeg(2,t.next.index,i),n.removeItem(e)}}},{key:"subpathIsClosed",value:function(e){var t=!1;return path.eachSeg(function(n){return n<=e||2!==this.type&&(1===this.type?(t=!0,!1):void 0)}),t}},{key:"removePtFromSelection",value:function(e){var t=this.selected_pts.indexOf(e);-1!==t&&(this.segs[e].select(!1),this.selected_pts.splice(t,1))}},{key:"clearSelection",value:function(){this.eachSeg(function(){this.select(!1)}),this.selected_pts=[]}},{key:"storeD",value:function(){this.last_d=this.elem.getAttribute("d")}},{key:"show",value:function(e){return this.eachSeg(function(){this.show(e)}),e&&this.selectPt(this.first_seg.index),this}},{key:"movePts",value:function(e,t){for(var n=this.selected_pts.length;n--;){this.segs[this.selected_pts[n]].move(e,t)}}},{key:"moveCtrl",value:function(e,t){var n=this.segs[this.selected_pts[0]];n.moveCtrl(this.dragctrl,e,t),linkControlPts&&n.setLinked(this.dragctrl)}},{key:"setSegType",value:function(e){this.storeD();for(var t,n=this.selected_pts.length;n--;){var a=this.selected_pts[n],r=this.segs[a],i=r.prev;if(i){if(!e)t="Toggle Path Segment Type",e=6===r.type?4:6;e=Number(e);var o=r.item.x,s=r.item.y,l=i.item.x,c=i.item.y,u=void 0;switch(e){case 6:if(r.olditem){var d=r.olditem;u=[o,s,d.x1,d.y1,d.x2,d.y2]}else{var h=o-l,p=s-c;u=[o,s,l+h/3,c+p/3,o-h/3,s-p/3]}break;case 4:u=[o,s],r.olditem=r.item}r.setType(e,u)}}path.endChanges(t)}},{key:"selectPt",value:function(e,t){this.clearSelection(),null==e&&this.eachSeg(function(t){this.prev&&(e=t)}),this.addPtsToSelection(e),t&&(this.dragctrl=t,linkControlPts&&this.segs[e].setLinked(t))}},{key:"update",value:function(){var e=this.elem;return getRotationAngle(e)?(this.matrix=getMatrix(e),this.imatrix=this.matrix.inverse()):(this.matrix=null,this.imatrix=null),this.eachSeg(function(t){this.item=e.pathSegList.getItem(t),this.update()}),this}},{key:"endChanges",value:function(e){isWebkit()&&editorContext_.resetD(this.elem);var t=new ChangeElementCommand(this.elem,{d:this.last_d},e);editorContext_.endChanges({cmd:t,elem:this.elem})}},{key:"addPtsToSelection",value:function(e){Array.isArray(e)||(e=[e]);for(var t=0;t<e.length;t++){var n=e[t];this.segs[n].ptgrip&&!this.selected_pts.includes(n)&&n>=0&&this.selected_pts.push(n)}this.selected_pts.sort();var a=this.selected_pts.length,r=[];for(r.length=a;a--;){var i=this.selected_pts[a],o=this.segs[i];o.select(!0),r[a]=o.ptgrip}var s=this.subpathIsClosed(this.selected_pts[0]);editorContext_.addPtsToSelection({grips:r,closedSubpath:s})}}]),e}(),getPath_=function(e){var t=pathData[e.id];return t||(t=pathData[e.id]=new Path(e)),t},removePath_=function(e){e in pathData&&delete pathData[e]},getRotVals=function(e,t){var n=e-oldcx,a=t-oldcy,r=Math.sqrt(n*n+a*a),i=Math.atan2(a,n)+angle;return n=r*Math.cos(i)+oldcx,a=r*Math.sin(i)+oldcy,n-=newcx,a-=newcy,r=Math.sqrt(n*n+a*a),i=Math.atan2(a,n)-angle,{x:r*Math.cos(i)+newcx,y:r*Math.sin(i)+newcy}},recalcRotatedPath=function(){var e=path.elem;if(angle=getRotationAngle(e,!0)){var t=path.oldbbox;oldcx=t.x+t.width/2,oldcy=t.y+t.height/2;var n=getBBox(e);newcx=n.x+n.width/2,newcy=n.y+n.height/2;var a=newcx-oldcx,r=newcy-oldcy,i=Math.sqrt(a*a+r*r),o=Math.atan2(r,a)+angle;newcx=i*Math.cos(o)+oldcx,newcy=i*Math.sin(o)+oldcy;for(var s=e.pathSegList,l=s.numberOfItems;l;){l-=1;var c=s.getItem(l),u=c.pathSegType;if(1!==u){var d=getRotVals(c.x,c.y),h=[d.x,d.y];if(null!=c.x1&&null!=c.x2){var p=getRotVals(c.x1,c.y1),g=getRotVals(c.x2,c.y2);h.splice(h.length,0,p.x,p.y,g.x,g.y)}replacePathSeg(u,l,h)}}getBBox(e);var f=editorContext_.getSVGRoot().createSVGTransform(),m=getTransformList(e);f.setRotate(180*angle/Math.PI,newcx,newcy),m.replaceItem(f,0)}},clearData=function(){pathData={}},reorientGrads=function(e,t){for(var n=getBBox(e),a=0;a<2;a++){var r=0===a?"fill":"stroke",i=e.getAttribute(r);if(i&&i.startsWith("url(")){var o=getRefElem(i);if("linearGradient"===o.tagName){var s=o.getAttribute("x1")||0,l=o.getAttribute("y1")||0,c=o.getAttribute("x2")||1,u=o.getAttribute("y2")||0;s=n.width*s+n.x,l=n.height*l+n.y,c=n.width*c+n.x,u=n.height*u+n.y;var d=transformPoint(s,l,t),h=transformPoint(c,u,t),p={};p.x1=(d.x-n.x)/n.width,p.y1=(d.y-n.y)/n.height,p.x2=(h.x-n.x)/n.width,p.y2=(h.y-n.y)/n.height;var g=o.cloneNode(!0);$$1(g).attr(p),g.id=editorContext_.getNextId(),findDefs().append(g),e.setAttribute(r,"url(#"+g.id+")")}}}},pathMap=[0,"z","M","m","L","l","C","c","Q","q","A","a","H","h","V","v","S","s","T","t"],convertPath=function(e,t){for(var n=e.pathSegList,a=n.numberOfItems,r=0,i=0,o="",s=null,l=0;l<a;++l){var c=n.getItem(l),u=c.x||0,d=c.y||0,h=c.x1||0,p=c.y1||0,g=c.x2||0,f=c.y2||0,m=c.pathSegType,v=pathMap[m]["to"+(t?"Lower":"Upper")+"Case"]();switch(m){case 1:o+="z",s&&!t&&(r=s[0],i=s[1]);break;case 12:u-=r;case 13:t?(r+=u,v="l"):(r=u+=r,v="L"),o+=pathDSegment(v,[[u,i]]);break;case 14:d-=i;case 15:t?(i+=d,v="l"):(i=d+=i,v="L"),o+=pathDSegment(v,[[r,d]]);break;case 2:case 4:case 18:u-=r,d-=i;case 5:case 3:case 19:t?(r+=u,i+=d):(r=u+=r,i=d+=i),2!==m&&3!==m||(s=[r,i]),o+=pathDSegment(v,[[u,d]]);break;case 6:u-=r,h-=r,g-=r,d-=i,p-=i,f-=i;case 7:t?(r+=u,i+=d):(h+=r,g+=r,p+=i,f+=i,r=u+=r,i=d+=i),o+=pathDSegment(v,[[h,p],[g,f],[u,d]]);break;case 8:u-=r,h-=r,d-=i,p-=i;case 9:t?(r+=u,i+=d):(h+=r,p+=i,r=u+=r,i=d+=i),o+=pathDSegment(v,[[h,p],[u,d]]);break;case 10:u-=r,d-=i;case 11:t?(r+=u,i+=d):(r=u+=r,i=d+=i),o+=pathDSegment(v,[[c.r1,c.r2]],[c.angle,c.largeArcFlag?1:0,c.sweepFlag?1:0],[u,d]);break;case 16:u-=r,g-=r,d-=i,f-=i;case 17:t?(r+=u,i+=d):(g+=r,f+=i,r=u+=r,i=d+=i),o+=pathDSegment(v,[[g,f],[u,d]])}}return o};function pathDSegment(e,t,n,a){$$1.each(t,function(e,n){t[e]=shortFloat(n)});var r=e+t.join(" ");return n&&(r+=" "+n.join(" ")),a&&(r+=" "+shortFloat(a)),r}var pathActions=function(){var e,t,n=!1,a=null,r=!1;return{mouseDown:function(t,a,r,i){var o;if("path"!==editorContext_.getCurrentMode()){if(path){var s;if(path.storeD(),"pathpointgrip_"===(o=t.target.id).substr(0,14)){s=path.cur_pt=parseInt(o.substr(14),10),path.dragging=[r,i];var l=path.segs[s];t.shiftKey?l.selected?path.removePtFromSelection(s):path.addPtsToSelection(s):((path.selected_pts.length<=1||!l.selected)&&path.clearSelection(),path.addPtsToSelection(s))}else if(o.startsWith("ctrlpointgrip_")){path.dragging=[r,i];var c=o.split("_")[1].split("c");s=Number(c[0]);var u=Number(c[1]);path.selectPt(s,u)}if(!path.dragging){var d=editorContext_.getRubberBox();null==d&&(d=editorContext_.setRubberBox(editorContext_.selectorManager.getRubberBandBox()));var h=editorContext_.getCurrentZoom();assignAttributes(d,{x:r*h,y:i*h,width:0,height:0,display:"inline"},100)}}}else{var p=r,g=i,f=editorContext_.getCurrentZoom(),m=p/f,v=g/f,_=getElem("path_stretch_line");e=[m,v],editorContext_.getGridSnapping()&&(m=snapToGrid(m),v=snapToGrid(v),p=snapToGrid(p),g=snapToGrid(g)),_||(_=document.createElementNS(NS.SVG,"path"),assignAttributes(_,{id:"path_stretch_line",stroke:"#22C","stroke-width":"0.5",fill:"none"}),_=getElem("selectorParentGroup").appendChild(_)),_.setAttribute("display","inline");var b,y=editorContext_.getDrawnPath();if(y){for(var x=y.pathSegList,C=x.numberOfItems,S=6/f,w=!1;C;){C--;var $=x.getItem(C),k=$.x,A=$.y;if(m>=k-S&&m<=k+S&&v>=A-S&&v<=A+S){w=!0;break}}o=editorContext_.getId(),removePath_(o);var E,P,T=getElem(o),G=x.numberOfItems;if(w){if(C<=1&&G>=2){var N=x.getItem(0).x,L=x.getItem(0).y;E=4===(P=_.pathSegList.getItem(1)).pathSegType?y.createSVGPathSegLinetoAbs(N,L):y.createSVGPathSegCurvetoCubicAbs(N,L,P.x1/f,P.y1/f,N,L);var I=y.createSVGPathSegClosePath();x.appendItem(E),x.appendItem(I)}else if(G<3)return!1;if($$1(_).remove(),editorContext_.setDrawnPath(null),editorContext_.setStarted(!1),n){path.matrix&&editorContext_.remapElement(T,{},path.matrix.inverse());var M=T.getAttribute("d"),R=$$1(path.elem).attr("d");return $$1(path.elem).attr("d",R+M),$$1(T).remove(),path.matrix&&recalcRotatedPath(),init$1(),pathActions.toEditMode(path.elem),path.selectPt(),!1}}else{if(!$$1.contains(editorContext_.getContainer(),editorContext_.getMouseTarget(t)))return console.log("Clicked outside canvas"),!1;var O=y.pathSegList.numberOfItems,B=y.pathSegList.getItem(O-1),V=B.x,j=B.y;if(t.shiftKey){var D=snapToAngle(V,j,m,v);m=D.x,v=D.y}E=4===(P=_.pathSegList.getItem(1)).pathSegType?y.createSVGPathSegLinetoAbs(editorContext_.round(m),editorContext_.round(v)):y.createSVGPathSegCurvetoCubicAbs(editorContext_.round(m),editorContext_.round(v),P.x1/f,P.y1/f,P.x2/f,P.y2/f),y.pathSegList.appendItem(E),m*=f,v*=f,_.setAttribute("d",["M",m,v,m,v].join(" ")),b=O,n&&(b+=path.segs.length),addPointGrip(b,m,v)}}else{var F="M"+m+","+v+" ";editorContext_.setDrawnPath(editorContext_.addSVGElementFromJson({element:"path",curStyles:!0,attr:{d:F,id:editorContext_.getNextId(),opacity:editorContext_.getOpacity()/2}})),_.setAttribute("d",["M",p,g,p,g].join(" ")),b=n?path.segs.length:0,addPointGrip(b,p,g)}}},mouseMove:function(n,a){var i=editorContext_.getCurrentZoom();r=!0;var o=editorContext_.getDrawnPath();if("path"!==editorContext_.getCurrentMode())if(path.dragging){var s=getPointFromGrip({x:path.dragging[0],y:path.dragging[1]},path),l=getPointFromGrip({x:n,y:a},path),c=l.x-s.x,u=l.y-s.y;path.dragging=[n,a],path.dragctrl?path.moveCtrl(c,u):path.movePts(c,u)}else path.selected_pts=[],path.eachSeg(function(e){if(this.next||this.prev){var t=editorContext_.getRubberBox().getBBox(),n=getGripPt(this),a={x:n.x,y:n.y,width:0,height:0},r=rectsIntersect(t,a);this.select(r),r&&path.selected_pts.push(this.index)}});else{if(!o)return;var d=o.pathSegList,h=d.numberOfItems-1;if(e){var p=addCtrlGrip("1c1"),g=addCtrlGrip("0c2");p.setAttribute("cx",n),p.setAttribute("cy",a),p.setAttribute("display","inline");var f=e[0],m=e[1],v=f+(f-n/i),_=m+(m-a/i);g.setAttribute("cx",v*i),g.setAttribute("cy",_*i),g.setAttribute("display","inline");var b=getCtrlLine(1);if(assignAttributes(b,{x1:n,y1:a,x2:v*i,y2:_*i,display:"inline"}),0===h)t=[n,a];else{var y=d.getItem(h-1),x=y.x,C=y.y;6===y.pathSegType?(x+=x-y.x2,C+=C-y.y2):t&&(x=t[0]/i,C=t[1]/i),replacePathSeg(6,h,[f,m,x,C,v,_],o)}}else{var S=getElem("path_stretch_line");if(S){var w=d.getItem(h);if(6===w.pathSegType){var $=w.x+(w.x-w.x2),k=w.y+(w.y-w.y2);replacePathSeg(6,1,[n,a,$*i,k*i,n,a],S)}else t?replacePathSeg(6,1,[n,a,t[0],t[1],n,a],S):replacePathSeg(4,1,[n,a],S)}}}},mouseUp:function(n,a,i,o){var s=editorContext_.getDrawnPath();if("path"===editorContext_.getCurrentMode())return e=null,s||(a=getElem(editorContext_.getId()),editorContext_.setStarted(!1),t=null),{keep:!0,element:a};var l=editorContext_.getRubberBox();if(path.dragging){var c=path.cur_pt;path.dragging=!1,path.dragctrl=!1,path.update(),r&&path.endChanges("Move path point(s)"),n.shiftKey||r||path.selectPt(c)}else l&&"none"!==l.getAttribute("display")?(l.setAttribute("display","none"),l.getAttribute("width")<=2&&l.getAttribute("height")<=2&&pathActions.toSelectMode(n.target)):pathActions.toSelectMode(n.target);r=!1},toEditMode:function(e){path=getPath_(e),editorContext_.setCurrentMode("pathedit"),editorContext_.clearSelection(),path.show(!0).update(),path.oldbbox=getBBox(path.elem),n=!1},toSelectMode:function(e){var t=e===path.elem;editorContext_.setCurrentMode("select"),path.show(!1),a=!1,editorContext_.clearSelection(),path.matrix&&recalcRotatedPath(),t&&(editorContext_.call("selected",[e]),editorContext_.addToSelection([e],!0))},addSubPath:function(e){e?(editorContext_.setCurrentMode("path"),n=!0):(pathActions.clear(!0),pathActions.toEditMode(path.elem))},select:function(e){a===e?(pathActions.toEditMode(e),editorContext_.setCurrentMode("pathedit")):a=e},reorient:function(){var e=editorContext_.getSelectedElements()[0];if(e&&0!==getRotationAngle(e)){var t=new BatchCommand("Reorient path"),n={d:e.getAttribute("d"),transform:e.getAttribute("transform")};t.addSubCommand(new ChangeElementCommand(e,n)),editorContext_.clearSelection(),this.resetOrientation(e),editorContext_.addCommandToHistory(t),getPath_(e).show(!1).matrix=null,this.clear(),editorContext_.addToSelection([e],!0),editorContext_.call("changed",editorContext_.getSelectedElements())}},clear:function(e){var n=editorContext_.getDrawnPath();if(a=null,n){var r=getElem(editorContext_.getId());$$1(getElem("path_stretch_line")).remove(),$$1(r).remove(),$$1(getElem("pathpointgrip_container")).find("*").attr("display","none"),t=null,editorContext_.setDrawnPath(null),editorContext_.setStarted(!1)}else"pathedit"===editorContext_.getCurrentMode()&&this.toSelectMode();path&&path.init().show(!1)},resetOrientation:function(e){if(null==e||"path"!==e.nodeName)return!1;var t=getTransformList(e),n=transformListToTransform(t).matrix;t.clear(),e.removeAttribute("transform");for(var a=e.pathSegList,r=a.numberOfItems,i=function(t){var r=a.getItem(t),i=r.pathSegType;if(1===i)return"continue";var o=[];$$1.each(["",1,2],function(e,t){var a=r["x"+t],i=r["y"+t];if(void 0!==a&&void 0!==i){var s=transformPoint(a,i,n);o.splice(o.length,0,s.x,s.y)}}),replacePathSeg(i,t,o,e)},o=0;o<r;++o)i(o);reorientGrads(e,n)},zoomChange:function(){"pathedit"===editorContext_.getCurrentMode()&&path.update()},getNodePoint:function(){var e=path.selected_pts.length?path.selected_pts[0]:1,t=path.segs[e];return{x:t.item.x,y:t.item.y,type:t.type}},linkControlPoints:function(e){setLinkControlPoints(e)},clonePathNode:function(){path.storeD();for(var e=path.selected_pts,t=e.length,n=[];t--;){var a=e[t];path.addSeg(a),n.push(a+t),n.push(a+t+1)}path.init().addPtsToSelection(n),path.endChanges("Clone path node(s)")},opencloseSubPath:function(){var e=path.selected_pts;if(1===e.length){var t,n,a=path.elem,r=a.pathSegList,i=e[0],o=null,s=null;if(path.eachSeg(function(e){return 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Ge=Te.matrix.inverse(),Ne=Ae.inverse(),Le=matrixMultiply(Ne,Ge,Pe,Ae);if(I=Le.e,M=Le.f,0!==I||0!==M)for(var Ie=t.childNodes,Me=Ie.length;Me--;){var Re=Ie.item(Me);if(1===Re.nodeType){N=context_.getStartTransform(),context_.setStartTransform(Re.getAttribute("transform"));var Oe=getTransformList(Re),Be=n.createSVGTransform();Be.setTranslate(I,M),Oe.numberOfItems?Oe.insertItemBefore(Be,0):Oe.appendItem(Be),m.addSubCommand(e(Re)),context_.setStartTransform(N)}}$&&(a.numberOfItems?a.insertItemBefore(Te,0):a.appendItem(Te))}}else{var Ve,je=getBBox(t);if(!je&&"path"!==t.tagName)return null;var De=getRotationAngle(t);if(De){p={x:je.x+je.width/2,y:je.y+je.height/2},g=transformPoint(je.x+je.width/2,je.y+je.height/2,transformListToTransform(a).matrix);for(var Fe=De*Math.PI/180,Ue=Math.abs(Fe)>1e-10?Math.sin(Fe)/(1-Math.cos(Fe)):2/Fe,He=0;He<a.numberOfItems;++He){var ze=a.getItem(He);if(4===ze.type){var qe=ze.matrix;p.y=(Ue*qe.e+qe.f)/2,p.x=(qe.e-Ue*qe.f)/2,a.removeItem(He);break}}}var We=0,Ye=a.numberOfItems;if(!isWebkit()){var Xe=t.getAttribute("fill");if(Xe&&Xe.startsWith("url(")){var Qe=getRefElem(Xe),Ke="pattern";if(Qe.tagName!==Ke&&(Ke="gradient"),"userSpaceOnUse"===Qe.getAttribute(Ke+"Units")){Ve=transformListToTransform(a).matrix;var Ze=getTransformList(Qe),Je=transformListToTransform(Ze).matrix,et="matrix("+[(Ve=matrixMultiply(Ve,Je)).a,Ve.b,Ve.c,Ve.d,Ve.e,Ve.f].join(",")+")";Qe.setAttribute(Ke+"Transform",et)}}}if(Ye>=3&&3===a.getItem(Ye-2).type&&2===a.getItem(Ye-3).type&&2===a.getItem(Ye-1).type)We=3,Ve=transformListToTransform(a,Ye-3,Ye-1).matrix,a.removeItem(Ye-1),a.removeItem(Ye-2),a.removeItem(Ye-3);else if(4===Ye&&1===a.getItem(Ye-1).type){We=3,Ve=transformListToTransform(a).matrix;var tt=n.createSVGTransform();tt.setMatrix(Ve),a.clear(),a.appendItem(tt),Ve=n.createSVGMatrix()}else if((1===Ye||Ye>1&&3!==a.getItem(1).type)&&2===a.getItem(0).type){We=2;var nt=a.getItem(0).matrix,at=transformListToTransform(a,1).matrix,rt=at.inverse();Ve=matrixMultiply(rt,nt,at),a.removeItem(0)}else{if(1!==Ye||1!==a.getItem(0).type||De){if(De){var it=n.createSVGTransform();it.setRotate(De,g.x,g.y),a.numberOfItems?a.insertItemBefore(it,0):a.appendItem(it)}return 0===a.numberOfItems&&t.removeAttribute("transform"),null}switch(Ve=transformListToTransform(a).matrix,t.tagName){case"line":v=$$7(t).attr(["x1","y1","x2","y2"]);case"polyline":case"polygon":if(v.points=t.getAttribute("points"),v.points){var ot=t.points,st=ot.numberOfItems;v.points=new Array(st);for(var lt=0;lt<st;++lt){var ct=ot.getItem(lt);v.points[lt]={x:ct.x,y:ct.y}}}case"path":v.d=t.getAttribute("d"),We=1,a.clear()}}if(1!==We&&2!==We&&3!==We||remapElement(t,v,Ve),2===We){if(De){hasMatrixTransform(a)||(g={x:p.x+Ve.e,y:p.y+Ve.f});var ut=n.createSVGTransform();ut.setRotate(De,g.x,g.y),a.numberOfItems?a.insertItemBefore(ut,0):a.appendItem(ut)}if("text"===t.tagName)for(var dt=t.childNodes,ht=dt.length;ht--;){var pt=dt.item(ht);if("tspan"===pt.tagName){var gt={x:$$7(pt).attr("x")||0,y:$$7(pt).attr("y")||0};remapElement(pt,gt,Ve)}}}else if(3===We&&De){var ft=transformListToTransform(a).matrix,mt=n.createSVGTransform();mt.setRotate(De,p.x,p.y);var vt=mt.matrix,_t=n.createSVGTransform();_t.setRotate(De,g.x,g.y);var bt=_t.matrix.inverse(),yt=ft.inverse(),xt=matrixMultiply(yt,bt,vt,ft);remapElement(t,v,xt),De&&(a.numberOfItems?a.insertItemBefore(_t,0):a.appendItem(_t))}}return 0===a.numberOfItems&&t.removeAttribute("transform"),m.addSubCommand(new ChangeElementCommand(t,_)),m},$$8=jQuery,gripRadius=isTouch()?10:4,Selector=function(){function e(t,n,a){_classCallCheck(this,e),this.id=t,this.selectedElement=n,this.locked=!0,this.selectorGroup=svgFactory_.createSVGElement({element:"g",attr:{id:"selectorGroup"+this.id}}),this.selectorRect=this.selectorGroup.appendChild(svgFactory_.createSVGElement({element:"path",attr:{id:"selectedBox"+this.id,fill:"none",stroke:"#22C","stroke-width":"1","stroke-dasharray":"5,5",style:"pointer-events:none"}})),this.gripCoords={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.reset(this.selectedElement,a)}return _createClass(e,[{key:"reset",value:function(e,t){this.locked=!0,this.selectedElement=e,this.resize(t),this.selectorGroup.setAttribute("display","inline")}},{key:"updateGripCursors",value:function(e){var t,n=[],a=Math.round(e/45);for(t in a<0&&(a+=8),selectorManager_.selectorGrips)n.push(t);for(;a>0;)n.push(n.shift()),a--;var r=0;for(t in selectorManager_.selectorGrips)selectorManager_.selectorGrips[t].setAttribute("style","cursor:"+n[r]+"-resize"),r++}},{key:"showGrips",value:function(e){var t=e?"inline":"none";selectorManager_.selectorGripsGroup.setAttribute("display",t);var n=this.selectedElement;this.hasGrips=e,n&&e&&(this.selectorGroup.append(selectorManager_.selectorGripsGroup),this.updateGripCursors(getRotationAngle(n)))}},{key:"resize",value:function(e){var t=this.selectorRect,n=selectorManager_,a=n.selectorGrips,r=this.selectedElement,i=r.getAttribute("stroke-width"),o=svgFactory_.getCurrentZoom(),s=1/o;"none"===r.getAttribute("stroke")||isNaN(i)||(s+=i/2);var l=r.tagName;"text"===l&&(s+=2/o);var c=getTransformList(r),u=transformListToTransform(c).matrix;if(u.e*=o,u.f*=o,e||(e=getBBox(r)),"g"===l&&!$$8.data(r,"gsvg")){var d=getStrokedBBox([r.childNodes]);d&&(e=d)}var h=e.x,p=e.y,g=e.width,f=e.height;s*=o;var m=transformBox(h*o,p*o,g*o,f*o,u),v=m.aabox,_=v.x-s,b=v.y-s,y=v.width+2*s,x=v.height+2*s,C=_+y/2,S=b+x/2,w=getRotationAngle(r);if(w){var $=svgFactory_.svgRoot().createSVGTransform();$.setRotate(-w,C,S);var k=$.matrix;m.tl=transformPoint(m.tl.x,m.tl.y,k),m.tr=transformPoint(m.tr.x,m.tr.y,k),m.bl=transformPoint(m.bl.x,m.bl.y,k),m.br=transformPoint(m.br.x,m.br.y,k);var A=m.tl,E=A.x,P=A.y,T=A.x,G=A.y,N=Math.min,L=Math.max;_=E=N(E,N(m.tr.x,N(m.bl.x,m.br.x)))-s,b=P=N(P,N(m.tr.y,N(m.bl.y,m.br.y)))-s,y=(T=L(T,L(m.tr.x,L(m.bl.x,m.br.x)))+s)-E,x=(G=L(G,L(m.tr.y,L(m.bl.y,m.br.y)))+s)-P}var I="M"+_+","+b+" L"+(_+y)+","+b+" "+(_+y)+","+(b+x)+" "+_+","+(b+x)+"z";t.setAttribute("d",I);var M=w?"rotate("+[w,C,S].join(",")+")":"";for(var R in this.selectorGroup.setAttribute("transform",M),this.gripCoords={nw:[_,b],ne:[_+y,b],sw:[_,b+x],se:[_+y,b+x],n:[_+y/2,b],w:[_,b+x/2],e:[_+y,b+x/2],s:[_+y/2,b+x]},this.gripCoords){var O=this.gripCoords[R];a[R].setAttribute("cx",O[0]),a[R].setAttribute("cy",O[1])}n.rotateGripConnector.setAttribute("x1",_+y/2),n.rotateGripConnector.setAttribute("y1",b),n.rotateGripConnector.setAttribute("x2",_+y/2),n.rotateGripConnector.setAttribute("y2",b-5*gripRadius),n.rotateGrip.setAttribute("cx",_+y/2),n.rotateGrip.setAttribute("cy",b-5*gripRadius)}}]),e}(),SelectorManager=function(){function e(){_classCallCheck(this,e),this.selectorParentGroup=null,this.rubberBandBox=null,this.selectors=[],this.selectorMap={},this.selectorGrips={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.selectorGripsGroup=null,this.rotateGripConnector=null,this.rotateGrip=null,this.initGroup()}return _createClass(e,[{key:"initGroup",value:function(){for(var e in this.selectorParentGroup&&this.selectorParentGroup.parentNode&&this.selectorParentGroup.remove(),this.selectorParentGroup=svgFactory_.createSVGElement({element:"g",attr:{id:"selectorParentGroup"}}),this.selectorGripsGroup=svgFactory_.createSVGElement({element:"g",attr:{display:"none"}}),this.selectorParentGroup.append(this.selectorGripsGroup),svgFactory_.svgRoot().append(this.selectorParentGroup),this.selectorMap={},this.selectors=[],this.rubberBandBox=null,this.selectorGrips){var t=svgFactory_.createSVGElement({element:"circle",attr:{id:"selectorGrip_resize_"+e,fill:"#22C",r:gripRadius,style:"cursor:"+e+"-resize","stroke-width":2,"pointer-events":"all"}});$$8.data(t,"dir",e),$$8.data(t,"type","resize"),this.selectorGrips[e]=this.selectorGripsGroup.appendChild(t)}if(this.rotateGripConnector=this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({element:"line",attr:{id:"selectorGrip_rotateconnector",stroke:"#22C","stroke-width":"1"}})),this.rotateGrip=this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({element:"circle",attr:{id:"selectorGrip_rotate",fill:"lime",r:gripRadius,stroke:"#22C","stroke-width":2,style:"cursor:url("+config_.imgPath+"rotate.png) 12 12, auto;"}})),$$8.data(this.rotateGrip,"type","rotate"),!$$8("#canvasBackground").length){var n=_slicedToArray(config_.dimensions,2),a=n[0],r=n[1],i=svgFactory_.createSVGElement({element:"svg",attr:{id:"canvasBackground",width:a,height:r,x:0,y:0,overflow:isWebkit()?"none":"visible",style:"pointer-events:none"}}),o=svgFactory_.createSVGElement({element:"rect",attr:{width:"100%",height:"100%",x:0,y:0,"stroke-width":1,stroke:"#000",fill:"#FFF",style:"pointer-events:none"}});i.append(o),svgFactory_.svgRoot().insertBefore(i,svgFactory_.svgContent())}}},{key:"requestSelector",value:function(e,t){if(null==e)return null;var n=this.selectors.length;if("object"===_typeof(this.selectorMap[e.id]))return this.selectorMap[e.id].locked=!0,this.selectorMap[e.id];for(var a=0;a<n;++a)if(this.selectors[a]&&!this.selectors[a].locked)return this.selectors[a].locked=!0,this.selectors[a].reset(e,t),this.selectorMap[e.id]=this.selectors[a],this.selectors[a];return this.selectors[n]=new Selector(n,e,t),this.selectorParentGroup.append(this.selectors[n].selectorGroup),this.selectorMap[e.id]=this.selectors[n],this.selectors[n]}},{key:"releaseSelector",value:function(e){if(null!=e){var t=this.selectors.length,n=this.selectorMap[e.id];n.locked||console.log("WARNING! selector was released but was already unlocked");for(var a=0;a<t;++a)if(this.selectors[a]&&this.selectors[a]===n){delete this.selectorMap[e.id],n.locked=!1,n.selectedElement=null,n.showGrips(!1);try{n.selectorGroup.setAttribute("display","none")}catch(e){}break}}}},{key:"getRubberBandBox",value:function(){return this.rubberBandBox||(this.rubberBandBox=this.selectorParentGroup.appendChild(svgFactory_.createSVGElement({element:"rect",attr:{id:"selectorRubberBand",fill:"#22C","fill-opacity":.15,stroke:"#22C","stroke-width":.5,display:"none",style:"pointer-events:none"}}))),this.rubberBandBox}}]),e}(),init$6=function(e,t){config_=e,svgFactory_=t,selectorManager_=new SelectorManager},getSelectorManager=function(){return selectorManager_},$$9=jqPluginSVG(jQuery),MoveElementCommand$1=MoveElementCommand,InsertElementCommand$1=InsertElementCommand,RemoveElementCommand$1=RemoveElementCommand,ChangeElementCommand$1=ChangeElementCommand,BatchCommand$1=BatchCommand,UndoManager$1=UndoManager,HistoryEventTypes$1=HistoryEventTypes;window.console||(window.console={},window.console.log=function(e){},window.console.dir=function(e){}),window.opera&&(window.console.log=function(e){window.opera.postError(e)},window.console.dir=function(e){});var SvgCanvas=function e(t,n){_classCallCheck(this,e);var a={show_outside_canvas:!0,selectNew:!0,dimensions:[640,480]};n&&$$9.extend(a,n);var r=a.dimensions,i=this,o=t.ownerDocument,s=o.importNode(text2xml('<svg id="svgroot" xmlns="'+NS.SVG+'" xlinkns="'+NS.XLINK+'" width="'+r[0]+'" height="'+r[1]+'" x="'+r[0]+'" y="'+r[1]+'" overflow="visible"><defs><filter id="canvashadow" filterUnits="objectBoundingBox"><feGaussianBlur in="SourceAlpha" stdDeviation="4" result="blur"/><feOffset in="blur" dx="5" dy="5" result="offsetBlur"/><feMerge><feMergeNode in="offsetBlur"/><feMergeNode in="SourceGraphic"/></feMerge></filter></defs></svg>').documentElement,!0);t.append(s);var l=o.createElementNS(NS.SVG,"svg");(i.clearSvgContentElement=function(){$$9(l).empty(),$$9(l).attr({id:"svgcontent",width:r[0],height:r[1],x:r[0],y:r[1],overflow:a.show_outside_canvas?"visible":"hidden",xmlns:NS.SVG,"xmlns:se":NS.SE,"xmlns:xlink":NS.XLINK}).appendTo(s);var e=o.createComment(" Created with SVG-edit - https://github.com/SVG-Edit/svgedit");l.append(e)})();var c="svg_";i.setIdPrefix=function(e){c=e},i.current_drawing_=new Drawing(l,c);var u=i.getCurrentDrawing=function(){return i.current_drawing_},d=1,h=null,p={shape:{fill:("none"===a.initFill.color?"":"#")+a.initFill.color,fill_paint:null,fill_opacity:a.initFill.opacity,stroke:"#"+a.initStroke.color,stroke_paint:null,stroke_opacity:a.initStroke.opacity,stroke_width:a.initStroke.width,stroke_dasharray:"none",stroke_linejoin:"miter",stroke_linecap:"butt",opacity:a.initOpacity}};p.text=$$9.extend(!0,{},p.shape),$$9.extend(p.text,{fill:"#000000",stroke_width:a.text&&a.text.stroke_width,font_size:a.text&&a.text.font_size,font_family:a.text&&a.text.font_family});var g=p.shape,f=[],m=this.getJsonFromSvgElement=function(e){if(3===e.nodeType)return e.nodeValue;for(var t,n={element:e.tagName,attr:{},children:[]},a=0;t=e.attributes[a];a++)n.attr[t.name]=t.value;for(var r,i=0;r=e.childNodes[i];i++)n.children[i]=m(r);return n},v=this.addSVGElementFromJson=function(e){if("string"==typeof e)return o.createTextNode(e);var t=getElem(e.attr.id),n=u().getCurrentLayer();if(t&&e.element!==t.tagName&&(t.remove(),t=null),!t){var a=e.namespace||NS.SVG;t=o.createElementNS(a,e.element),n&&(h||n).append(t)}return e.curStyles&&assignAttributes(t,{fill:g.fill,stroke:g.stroke,"stroke-width":g.stroke_width,"stroke-dasharray":g.stroke_dasharray,"stroke-linejoin":g.stroke_linejoin,"stroke-linecap":g.stroke_linecap,"stroke-opacity":g.stroke_opacity,"fill-opacity":g.fill_opacity,opacity:g.opacity/2,style:"pointer-events:inherit"},100),assignAttributes(t,e.attr,100),cleanupElement(t),e.children&&e.children.forEach(function(e){t.append(v(e))}),t};i.getTransformList=getTransformList,i.matrixMultiply=matrixMultiply,i.hasMatrixTransform=hasMatrixTransform,i.transformListToTransform=transformListToTransform;var _=function(){return a.baseUnit};init({getBaseUnit:_,getElement:getElem,getHeight:function(){return l.getAttribute("height")/d},getWidth:function(){return l.getAttribute("width")/d},getRoundDigits:function(){return H.round_digits}}),i.convertToNum=convertToNum;var b=function(){return l},y=this.getSelectedElems=function(){return f},x=pathActions,C=function(){return s};init$2({pathActions:x,getSVGContent:b,addSVGElementFromJson:v,getSelectedElements:y,getDOMDocument:function(){return o},getDOMContainer:function(){return t},getSVGRoot:C,getBaseUnit:_,getSnappingStep:function(){return a.snappingStep}}),i.findDefs=findDefs,i.getUrlFromAttr=getUrlFromAttr,i.getHref=getHref,i.setHref=setHref,i.getBBox=getBBox,i.getRotationAngle=getRotationAngle,i.getElem=getElem,i.getRefElem=getRefElem,i.assignAttributes=assignAttributes,this.cleanupElement=cleanupElement;var S=function(){return a.gridSnapping};init$4({getDrawing:function(){return u()},getSVGRoot:C,getGridSnapping:S}),this.remapElement=remapElement,init$5({getSVGRoot:C,getStartTransform:function(){return K},setStartTransform:function(e){K=e}}),this.recalculateDimensions=recalculateDimensions;var w=getReverseNS();i.sanitizeSvg=sanitizeSvg;var $=i.undoMgr=new UndoManager$1({handleHistoryEvent:function(e,t){var n=HistoryEventTypes$1;if(e===n.BEFORE_UNAPPLY||e===n.BEFORE_APPLY)i.clearSelection();else if(e===n.AFTER_APPLY||e===n.AFTER_UNAPPLY){var a=t.elements();i.pathActions.clear(),N("changed",a);var r=t.type(),o=e===n.AFTER_APPLY;if(r===MoveElementCommand$1.type())(o?t.newParent:t.oldParent)===l&&identifyLayers();else if(r===InsertElementCommand$1.type()||r===RemoveElementCommand$1.type())t.parent===l&&identifyLayers(),r===InsertElementCommand$1.type()?o&&F(t.elem):o||F(t.elem),"use"===t.elem.tagName&&Re(t.elem);else if(r===ChangeElementCommand$1.type()){"title"===t.elem.tagName&&t.elem.parentNode.parentNode===l&&identifyLayers();var s=o?t.newValues:t.oldValues;s.stdDeviation&&i.setBlurOffsets(t.elem.parentNode,s.stdDeviation)}}}}),k=function(e){i.undoMgr.addCommandToHistory(e)},A=this.getZoom=function(){return d},E=this.round=function(e){return parseInt(e*d,10)/d};init$6(a,{createSVGElement:function(e){return i.addSVGElementFromJson(e)},svgRoot:function(){return s},svgContent:function(){return l},getCurrentZoom:A});var P=this.selectorManager=getSelectorManager(),T=i.getNextId=function(){return u().getNextId()},G=i.getId=function(){return u().getId()},N=function(e,t){if(ce[e])return ce[e](window,t)},L=this.clearSelection=function(e){f.forEach(function(e){null!=e&&P.releaseSelector(e)}),f=[],e||N("selected",f)},I=this.addToSelection=function(e,t){if(e.length){for(var n=0;n<f.length&&null!=f[n];)++n;for(var a=e.length;a--;){var r=e[a];if(r){var i=getBBox(r);if(i&&("a"===r.tagName&&1===r.childNodes.length&&(r=r.firstChild),!f.includes(r))){f[n]=r,n++;var o=P.requestSelector(r,i);f.length>1&&o.showGrips(!1)}}}for(N("selected",f),t||1===f.length?P.requestSelector(f[0]).showGrips(!0):P.requestSelector(f[0]).showGrips(!1),f.sort(function(e,t){return e&&t&&e.compareDocumentPosition?3-(6&t.compareDocumentPosition(e)):null==e?1:void 0});null==f[0];)f.shift(0)}},M=function(){return g.opacity},R=this.getMouseTarget=function(e){if(null==e)return null;var 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0,this._x)}}]),n}();Object.defineProperty(p.prototype,"x",{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0});var g=function(t){function n(t,r){var a;return _classCallCheck(this,n),(a=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_LINETO_VERTICAL_ABS,"V",t)))._y=r,a}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegLinetoVerticalAbs]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._y)}}]),n}();Object.defineProperty(g.prototype,"y",{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0});var f=function(t){function n(t,r){var a;return _classCallCheck(this,n),(a=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_LINETO_VERTICAL_REL,"v",t)))._y=r,a}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegLinetoVerticalRel]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._y)}}]),n}();Object.defineProperty(f.prototype,"y",{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0});var m=function(t){function n(t,r,a,i,s){var o;return _classCallCheck(this,n),(o=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS,"S",t)))._x=r,o._y=a,o._x2=i,o._y2=s,o}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegCurvetoCubicSmoothAbs]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._x2+" "+this._y2+" "+this._x+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._x,this._y,this._x2,this._y2)}}]),n}();Object.defineProperties(m.prototype,{x:{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0},y:{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0},x2:{get:function(){return this._x2},set:function(e){this._x2=e,this._segmentChanged()},enumerable:!0},y2:{get:function(){return this._y2},set:function(e){this._y2=e,this._segmentChanged()},enumerable:!0}});var v=function(t){function n(t,r,a,i,s){var o;return _classCallCheck(this,n),(o=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_CURVETO_CUBIC_SMOOTH_REL,"s",t)))._x=r,o._y=a,o._x2=i,o._y2=s,o}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegCurvetoCubicSmoothRel]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._x2+" "+this._y2+" "+this._x+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._x,this._y,this._x2,this._y2)}}]),n}();Object.defineProperties(v.prototype,{x:{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0},y:{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0},x2:{get:function(){return this._x2},set:function(e){this._x2=e,this._segmentChanged()},enumerable:!0},y2:{get:function(){return this._y2},set:function(e){this._y2=e,this._segmentChanged()},enumerable:!0}});var _=function(t){function n(t,r,a){var i;return _classCallCheck(this,n),(i=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS,"T",t)))._x=r,i._y=a,i}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegCurvetoQuadraticSmoothAbs]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._x+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._x,this._y)}}]),n}();Object.defineProperties(_.prototype,{x:{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0},y:{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0}});var b=function(t){function n(t,r,a){var i;return _classCallCheck(this,n),(i=_possibleConstructorReturn(this,_getPrototypeOf(n).call(this,e.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL,"t",t)))._x=r,i._y=a,i}return _inherits(n,e),_createClass(n,[{key:"toString",value:function(){return"[object SVGPathSegCurvetoQuadraticSmoothRel]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._x+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._x,this._y)}}]),n}();Object.defineProperties(b.prototype,{x:{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0},y:{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0}}),SVGPathElement.prototype.createSVGPathSegClosePath=function(){return new t(void 0)},SVGPathElement.prototype.createSVGPathSegMovetoAbs=function(e,t){return new n(void 0,e,t)},SVGPathElement.prototype.createSVGPathSegMovetoRel=function(e,t){return new r(void 0,e,t)},SVGPathElement.prototype.createSVGPathSegLinetoAbs=function(e,t){return new a(void 0,e,t)},SVGPathElement.prototype.createSVGPathSegLinetoRel=function(e,t){return new i(void 0,e,t)},SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs=function(e,t,n,r,a,i){return new s(void 0,e,t,n,r,a,i)},SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel=function(e,t,n,r,a,i){return new o(void 0,e,t,n,r,a,i)},SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs=function(e,t,n,r){return new l(void 0,e,t,n,r)},SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel=function(e,t,n,r){return new c(void 0,e,t,n,r)},SVGPathElement.prototype.createSVGPathSegArcAbs=function(e,t,n,r,a,i,s){return new u(void 0,e,t,n,r,a,i,s)},SVGPathElement.prototype.createSVGPathSegArcRel=function(e,t,n,r,a,i,s){return new d(void 0,e,t,n,r,a,i,s)},SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs=function(e){return new h(void 0,e)},SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel=function(e){return new p(void 0,e)},SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs=function(e){return new g(void 0,e)},SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel=function(e){return new f(void 0,e)},SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs=function(e,t,n,r){return new m(void 0,e,t,n,r)},SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel=function(e,t,n,r){return new v(void 0,e,t,n,r)},SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs=function(e,t){return new _(void 0,e,t)},SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel=function(e,t){return new b(void 0,e,t)},"getPathSegAtLength"in SVGPathElement.prototype||(SVGPathElement.prototype.getPathSegAtLength=function(e){if(void 0===e||!isFinite(e))throw new Error("Invalid arguments.");var t=document.createElementNS("http://www.w3.org/2000/svg","path");t.setAttribute("d",this.getAttribute("d"));var n=t.pathSegList.numberOfItems-1;if(n<=0)return 0;do{if(t.pathSegList.removeItem(n),e>t.getTotalLength())break;n--}while(n>0);return n}),window.SVGPathSeg=e,window.SVGPathSegClosePath=t,window.SVGPathSegMovetoAbs=n,window.SVGPathSegMovetoRel=r,window.SVGPathSegLinetoAbs=a,window.SVGPathSegLinetoRel=i,window.SVGPathSegCurvetoCubicAbs=s,window.SVGPathSegCurvetoCubicRel=o,window.SVGPathSegCurvetoQuadraticAbs=l,window.SVGPathSegCurvetoQuadraticRel=c,window.SVGPathSegArcAbs=u,window.SVGPathSegArcRel=d,window.SVGPathSegLinetoHorizontalAbs=h,window.SVGPathSegLinetoHorizontalRel=p,window.SVGPathSegLinetoVerticalAbs=g,window.SVGPathSegLinetoVerticalRel=f,window.SVGPathSegCurvetoCubicSmoothAbs=m,window.SVGPathSegCurvetoCubicSmoothRel=v,window.SVGPathSegCurvetoQuadraticSmoothAbs=_,window.SVGPathSegCurvetoQuadraticSmoothRel=b}if(!("SVGPathSegList"in window&&"appendItem"in window.SVGPathSegList.prototype)){var y=function(){function e(t){_classCallCheck(this,e),this._pathElement=t,this._list=this._parsePath(this._pathElement.getAttribute("d")),this._mutationObserverConfig={attributes:!0,attributeFilter:["d"]},this._pathElementMutationObserver=new MutationObserver(this._updateListFromPathMutations.bind(this)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)}return _createClass(e,[{key:"_checkPathSynchronizedToList",value:function(){this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords())}},{key:"_updateListFromPathMutations",value:function(e){if(this._pathElement){var t=!1;e.forEach(function(e){"d"===e.attributeName&&(t=!0)}),t&&(this._list=this._parsePath(this._pathElement.getAttribute("d")))}}},{key:"_writeListToPath",value:function(){this._pathElementMutationObserver.disconnect(),this._pathElement.setAttribute("d",e._pathSegArrayAsString(this._list)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)}},{key:"segmentChanged",value:function(e){this._writeListToPath()}},{key:"clear",value:function(){this._checkPathSynchronizedToList(),this._list.forEach(function(e){e._owningPathSegList=null}),this._list=[],this._writeListToPath()}},{key:"initialize",value:function(e){return this._checkPathSynchronizedToList(),this._list=[e],e._owningPathSegList=this,this._writeListToPath(),e}},{key:"_checkValidIndex",value:function(e){if(isNaN(e)||e<0||e>=this.numberOfItems)throw new Error("INDEX_SIZE_ERR")}},{key:"getItem",value:function(e){return this._checkPathSynchronizedToList(),this._checkValidIndex(e),this._list[e]}},{key:"insertItemBefore",value:function(e,t){return this._checkPathSynchronizedToList(),t>this.numberOfItems&&(t=this.numberOfItems),e._owningPathSegList&&(e=e.clone()),this._list.splice(t,0,e),e._owningPathSegList=this,this._writeListToPath(),e}},{key:"replaceItem",value:function(e,t){return this._checkPathSynchronizedToList(),e._owningPathSegList&&(e=e.clone()),this._checkValidIndex(t),this._list[t]=e,e._owningPathSegList=this,this._writeListToPath(),e}},{key:"removeItem",value:function(e){this._checkPathSynchronizedToList(),this._checkValidIndex(e);var t=this._list[e];return this._list.splice(e,1),this._writeListToPath(),t}},{key:"appendItem",value:function(e){return this._checkPathSynchronizedToList(),e._owningPathSegList&&(e=e.clone()),this._list.push(e),e._owningPathSegList=this,this._writeListToPath(),e}},{key:"_parsePath",value:function(e){if(!e||!e.length)return[];var t=this,n=function(){function e(){_classCallCheck(this,e),this.pathSegList=[]}return _createClass(e,[{key:"appendSegment",value:function(e){this.pathSegList.push(e)}}]),e}(),r=function(){function e(t){_classCallCheck(this,e),this._string=t,this._currentIndex=0,this._endIndex=this._string.length,this._previousCommand=SVGPathSeg.PATHSEG_UNKNOWN,this._skipOptionalSpaces()}return _createClass(e,[{key:"_isCurrentSpace",value:function(){var e=this._string[this._currentIndex];return e<=" "&&(" "===e||"\n"===e||"\t"===e||"\r"===e||"\f"===e)}},{key:"_skipOptionalSpaces",value:function(){for(;this._currentIndex<this._endIndex&&this._isCurrentSpace();)this._currentIndex++;return this._currentIndex<this._endIndex}},{key:"_skipOptionalSpacesOrDelimiter",value:function(){return!(this._currentIndex<this._endIndex&&!this._isCurrentSpace()&&","!==this._string.charAt(this._currentIndex))&&(this._skipOptionalSpaces()&&this._currentIndex<this._endIndex&&","===this._string.charAt(this._currentIndex)&&(this._currentIndex++,this._skipOptionalSpaces()),this._currentIndex<this._endIndex)}},{key:"hasMoreData",value:function(){return this._currentIndex<this._endIndex}},{key:"peekSegmentType",value:function(){var e=this._string[this._currentIndex];return this._pathSegTypeFromChar(e)}},{key:"_pathSegTypeFromChar",value:function(e){switch(e){case"Z":case"z":return SVGPathSeg.PATHSEG_CLOSEPATH;case"M":return SVGPathSeg.PATHSEG_MOVETO_ABS;case"m":return SVGPathSeg.PATHSEG_MOVETO_REL;case"L":return SVGPathSeg.PATHSEG_LINETO_ABS;case"l":return SVGPathSeg.PATHSEG_LINETO_REL;case"C":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;case"c":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;case"Q":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;case"q":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;case"A":return SVGPathSeg.PATHSEG_ARC_ABS;case"a":return SVGPathSeg.PATHSEG_ARC_REL;case"H":return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;case"h":return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;case"V":return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;case"v":return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;case"S":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;case"s":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;case"T":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;case"t":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;default:return SVGPathSeg.PATHSEG_UNKNOWN}}},{key:"_nextCommandHelper",value:function(e,t){return("+"===e||"-"===e||"."===e||e>="0"&&e<="9")&&t!==SVGPathSeg.PATHSEG_CLOSEPATH?t===SVGPathSeg.PATHSEG_MOVETO_ABS?SVGPathSeg.PATHSEG_LINETO_ABS:t===SVGPathSeg.PATHSEG_MOVETO_REL?SVGPathSeg.PATHSEG_LINETO_REL:t:SVGPathSeg.PATHSEG_UNKNOWN}},{key:"initialCommandIsMoveTo",value:function(){if(!this.hasMoreData())return!0;var e=this.peekSegmentType();return e===SVGPathSeg.PATHSEG_MOVETO_ABS||e===SVGPathSeg.PATHSEG_MOVETO_REL}},{key:"_parseNumber",value:function(){var e=0,t=0,n=1,r=0,a=1,i=1,s=this._currentIndex;if(this._skipOptionalSpaces(),this._currentIndex<this._endIndex&&"+"===this._string.charAt(this._currentIndex)?this._currentIndex++:this._currentIndex<this._endIndex&&"-"===this._string.charAt(this._currentIndex)&&(this._currentIndex++,a=-1),!(this._currentIndex===this._endIndex||(this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")&&"."!==this._string.charAt(this._currentIndex))){for(var o=this._currentIndex;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)this._currentIndex++;if(this._currentIndex!==o)for(var l=this._currentIndex-1,c=1;l>=o;)t+=c*(this._string.charAt(l--)-"0"),c*=10;if(this._currentIndex<this._endIndex&&"."===this._string.charAt(this._currentIndex)){if(this._currentIndex++,this._currentIndex>=this._endIndex||this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")return;for(;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)n*=10,r+=(this._string.charAt(this._currentIndex)-"0")/n,this._currentIndex+=1}if(this._currentIndex!==s&&this._currentIndex+1<this._endIndex&&("e"===this._string.charAt(this._currentIndex)||"E"===this._string.charAt(this._currentIndex))&&"x"!==this._string.charAt(this._currentIndex+1)&&"m"!==this._string.charAt(this._currentIndex+1)){if(this._currentIndex++,"+"===this._string.charAt(this._currentIndex)?this._currentIndex++:"-"===this._string.charAt(this._currentIndex)&&(this._currentIndex++,i=-1),this._currentIndex>=this._endIndex||this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")return;for(;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)e*=10,e+=this._string.charAt(this._currentIndex)-"0",this._currentIndex++}var u=t+r;if(u*=a,e&&(u*=Math.pow(10,i*e)),s!==this._currentIndex)return this._skipOptionalSpacesOrDelimiter(),u}}},{key:"_parseArcFlag",value:function(){if(!(this._currentIndex>=this._endIndex)){var e=!1,t=this._string.charAt(this._currentIndex++);if("0"===t)e=!1;else{if("1"!==t)return;e=!0}return this._skipOptionalSpacesOrDelimiter(),e}}},{key:"parseSegment",value:function(){var e=this._string[this._currentIndex],n=this._pathSegTypeFromChar(e);if(n===SVGPathSeg.PATHSEG_UNKNOWN){if(this._previousCommand===SVGPathSeg.PATHSEG_UNKNOWN)return null;if((n=this._nextCommandHelper(e,this._previousCommand))===SVGPathSeg.PATHSEG_UNKNOWN)return null}else this._currentIndex++;switch(this._previousCommand=n,n){case SVGPathSeg.PATHSEG_MOVETO_REL:return new SVGPathSegMovetoRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_MOVETO_ABS:return new SVGPathSegMovetoAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_REL:return new SVGPathSegLinetoRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_ABS:return new SVGPathSegLinetoAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:return new SVGPathSegLinetoHorizontalRel(t,this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:return new SVGPathSegLinetoHorizontalAbs(t,this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:return new SVGPathSegLinetoVerticalRel(t,this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:return new SVGPathSegLinetoVerticalAbs(t,this._parseNumber());case SVGPathSeg.PATHSEG_CLOSEPATH:return this._skipOptionalSpaces(),new SVGPathSegClosePath(t);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:var r={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicRel(t,r.x,r.y,r.x1,r.y1,r.x2,r.y2);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:var a={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicAbs(t,a.x,a.y,a.x1,a.y1,a.x2,a.y2);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:var i={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicSmoothRel(t,i.x,i.y,i.x2,i.y2);case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:var s={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoCubicSmoothAbs(t,s.x,s.y,s.x2,s.y2);case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:var o={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoQuadraticRel(t,o.x,o.y,o.x1,o.y1);case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:var l={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegCurvetoQuadraticAbs(t,l.x,l.y,l.x1,l.y1);case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:return new SVGPathSegCurvetoQuadraticSmoothRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:return new SVGPathSegCurvetoQuadraticSmoothAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_ARC_REL:var c={x1:this._parseNumber(),y1:this._parseNumber(),arcAngle:this._parseNumber(),arcLarge:this._parseArcFlag(),arcSweep:this._parseArcFlag(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegArcRel(t,c.x,c.y,c.x1,c.y1,c.arcAngle,c.arcLarge,c.arcSweep);case SVGPathSeg.PATHSEG_ARC_ABS:var u={x1:this._parseNumber(),y1:this._parseNumber(),arcAngle:this._parseNumber(),arcLarge:this._parseArcFlag(),arcSweep:this._parseArcFlag(),x:this._parseNumber(),y:this._parseNumber()};return new SVGPathSegArcAbs(t,u.x,u.y,u.x1,u.y1,u.arcAngle,u.arcLarge,u.arcSweep);default:throw new Error("Unknown path seg 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t=e.pathSegList,n=e.createSVGPathSegLinetoAbs(5,5);try{return t.insertItemBefore(n,1),!0}catch(e){}return!1}(),supportsGoodTextCharPos_=function(){var e=document.createElementNS(NS.SVG,"svg"),t=document.createElementNS(NS.SVG,"svg");document.documentElement.append(e),t.setAttribute("x",5),e.append(t);var n=document.createElementNS(NS.SVG,"text");n.textContent="a",t.append(n);try{return 0===n.getStartPositionOfChar(0).x}catch(e){return!1}finally{e.remove()}}(),supportsPathBBox_=function(){var e=document.createElementNS(NS.SVG,"svg");document.documentElement.append(e);var t=document.createElementNS(NS.SVG,"path");t.setAttribute("d","M0,0 C0,0 10,10 10,0"),e.append(t);var n=t.getBBox();return e.remove(),n.height>4&&n.height<5}(),supportsHVLineContainerBBox_=function(){var e=document.createElementNS(NS.SVG,"svg");document.documentElement.append(e);var t=document.createElementNS(NS.SVG,"path");t.setAttribute("d","M0,0 10,0");var n=document.createElementNS(NS.SVG,"path");n.setAttribute("d","M5,0 15,0");var r=document.createElementNS(NS.SVG,"g");r.append(t,n),e.append(r);var a=r.getBBox();return e.remove(),15===a.width}(),supportsGoodDecimals_=function(){var e=document.createElementNS(NS.SVG,"rect");e.setAttribute("x",.1);var t=!e.cloneNode(!1).getAttribute("x").includes(",");return t||$.alert('NOTE: This version of Opera is known to contain bugs in SVG-edit.\nPlease upgrade to the <a href="http://opera.com">latest version</a> in which the problems have been fixed.'),t}(),supportsNonScalingStroke_=function(){var e=document.createElementNS(NS.SVG,"rect");return e.setAttribute("style","vector-effect:non-scaling-stroke"),"non-scaling-stroke"===e.style.vectorEffect}(),supportsNativeSVGTransformLists_=function(){var e=document.createElementNS(NS.SVG,"rect").transform.baseVal,t=svg.createSVGTransform();e.appendItem(t);var n=e.getItem(0);return n instanceof SVGTransform&&t instanceof SVGTransform&&n.type===t.type&&n.angle===t.angle&&n.matrix.a===t.matrix.a&&n.matrix.b===t.matrix.b&&n.matrix.c===t.matrix.c&&n.matrix.d===t.matrix.d&&n.matrix.e===t.matrix.e&&n.matrix.f===t.matrix.f}(),isOpera=function(){return isOpera_},isWebkit=function(){return isWebkit_},isGecko=function(){return isGecko_},isIE=function(){return isIE_},isChrome=function(){return isChrome_},isMac=function(){return isMac_},isTouch=function(){return isTouch_},supportsSelectors=function(){return supportsSelectors_},supportsXpath=function(){return supportsXpath_},supportsPathReplaceItem=function(){return supportsPathReplaceItem_},supportsPathInsertItemBefore=function(){return supportsPathInsertItemBefore_},supportsPathBBox=function(){return supportsPathBBox_},supportsHVLineContainerBBox=function(){return supportsHVLineContainerBBox_},supportsGoodTextCharPos=function(){return supportsGoodTextCharPos_},supportsNonScalingStroke=function(){return supportsNonScalingStroke_},supportsNativeTransformLists=function(){return supportsNativeSVGTransformLists_};function jQueryPluginSVG(e){var t=e.fn.attr;return e.fn.attr=function(e,n){var r=this.length;if(!r)return t.call(this,e,n);for(var a=0;a<r;++a){var i=this[a];if("http://www.w3.org/2000/svg"!==i.namespaceURI)return t.call(this,e,n);if(void 0!==n)i.setAttribute(e,n);else if(Array.isArray(e)){for(var s={},o=e.length;o--;){var l=e[o],c=i.getAttribute(l);(c||"0"===c)&&(c=isNaN(c)?c:c-0),s[l]=c}return s}if("object"!==_typeof(e)){var u=i.getAttribute(e);return(u||"0"===u)&&(u=isNaN(u)?u:u-0),u}for(var d=Object.entries(e),h=0;h<d.length;h++){var p=_slicedToArray(d[h],2),g=p[0],f=p[1];i.setAttribute(g,f)}}return this},e}var svgroot=document.createElementNS(NS.SVG,"svg");function transformToString(e){var t=e.matrix,n="";switch(e.type){case 1:n="matrix("+[t.a,t.b,t.c,t.d,t.e,t.f].join(",")+")";break;case 2:n="translate("+t.e+","+t.f+")";break;case 3:n=t.a===t.d?"scale("+t.a+")":"scale("+t.a+","+t.d+")";break;case 4:var r=0,a=0;if(0!==e.angle){var i=1-t.a;a=(i*t.f+t.b*t.e)/(i*i+t.b*t.b),r=(t.e-t.b*a)/i}n="rotate("+e.angle+" "+r+","+a+")"}return n}var elementContainer_,listMap_={},SVGTransformList=function(){function e(t){_classCallCheck(this,e),this._elem=t||null,this._xforms=[],this._update=function(){for(var e="",t=0;t<this.numberOfItems;++t){e+=transformToString(this._list.getItem(t))+" "}this._elem.setAttribute("transform",e)},this._list=this,this._init=function(){var e=this,t=this._elem.getAttribute("transform");if(t)for(var n=/\s*((scale|matrix|rotate|translate)\s*\(.*?\))\s*,?\s*/,r=!0;r;)r=t.match(n),t=t.replace(n,""),r&&r[1]&&function(){var t=r[1].split(/\s*\(/),n=t[0],a=t[1].match(/\s*(.*?)\s*\)/);a[1]=a[1].replace(/(\d)-/g,"$1 -");var i=a[1].split(/[, ]+/),s="abcdef".split(""),o=svgroot.createSVGMatrix();Object.values(i).forEach(function(e,t){i[t]=parseFloat(e),"matrix"===n&&(o[s[t]]=i[t])});var l=svgroot.createSVGTransform(),c="set"+n.charAt(0).toUpperCase()+n.slice(1),u="matrix"===n?[o]:i;"scale"===n&&1===u.length?u.push(u[0]):"translate"===n&&1===u.length?u.push(0):"rotate"===n&&1===u.length&&u.push(0,0),l[c].apply(l,_toConsumableArray(u)),e._list.appendItem(l)}()},this._removeFromOtherLists=function(e){e&&Object.values(listMap_).some(function(t){for(var n=0,r=t._xforms.length;n<r;++n)if(t._xforms[n]===e)return t.removeItem(n),!0;return!1})},this.numberOfItems=0}return _createClass(e,[{key:"clear",value:function(){this.numberOfItems=0,this._xforms=[]}},{key:"initialize",value:function(e){this.numberOfItems=1,this._removeFromOtherLists(e),this._xforms=[e]}},{key:"getItem",value:function(e){if(e<this.numberOfItems&&e>=0)return this._xforms[e];var t=new Error("DOMException with code=INDEX_SIZE_ERR");throw t.code=1,t}},{key:"insertItemBefore",value:function(e,t){var n=null;if(t>=0)if(t<this.numberOfItems){this._removeFromOtherLists(e);var r,a=new Array(this.numberOfItems+1);for(r=0;r<t;++r)a[r]=this._xforms[r];a[r]=e;for(var i=r+1;r<this.numberOfItems;++i,++r)a[i]=this._xforms[r];this.numberOfItems++,this._xforms=a,n=e,this._list._update()}else n=this._list.appendItem(e);return n}},{key:"replaceItem",value:function(e,t){var n=null;return t<this.numberOfItems&&t>=0&&(this._removeFromOtherLists(e),this._xforms[t]=e,n=e,this._list._update()),n}},{key:"removeItem",value:function(e){if(e<this.numberOfItems&&e>=0){var t,n=this._xforms[e],r=new Array(this.numberOfItems-1);for(t=0;t<e;++t)r[t]=this._xforms[t];for(var a=t;a<this.numberOfItems-1;++a,++t)r[a]=this._xforms[t+1];return this.numberOfItems--,this._xforms=r,this._list._update(),n}var i=new Error("DOMException with code=INDEX_SIZE_ERR");throw i.code=1,i}},{key:"appendItem",value:function(e){return this._removeFromOtherLists(e),this._xforms.push(e),this.numberOfItems++,this._list._update(),e}}]),e}(),resetListMap=function(){listMap_={}},removeElementFromListMap=function(e){e.id&&listMap_[e.id]&&delete listMap_[e.id]},getTransformList=function(e){if(!supportsNativeTransformLists()){var t=e.id||"temp",n=listMap_[t];return n&&"temp"!==t||(listMap_[t]=new SVGTransformList(e),listMap_[t]._init(),n=listMap_[t]),n}return e.transform?e.transform.baseVal:e.gradientTransform?e.gradientTransform.baseVal:e.patternTransform?e.patternTransform.baseVal:null},wAttrs=["x","x1","cx","rx","width"],hAttrs=["y","y1","cy","ry","height"],unitAttrs=["r","radius"].concat(wAttrs,hAttrs),typeMap_={},init=function(e){elementContainer_=e;var t=document.createElementNS(NS.SVG,"svg");document.body.append(t);var n=document.createElementNS(NS.SVG,"rect");n.setAttribute("width","1em"),n.setAttribute("height","1ex"),n.setAttribute("x","1in"),t.append(n);var r=n.getBBox();t.remove();var a=r.x;typeMap_={em:r.width,ex:r.height,in:a,cm:a/2.54,mm:a/25.4,pt:a/72,pc:a/6,px:1,"%":0}},getTypeMap=function(){return typeMap_},shortFloat=function e(t){var n=elementContainer_.getRoundDigits();return isNaN(t)?Array.isArray(t)?e(t[0])+","+e(t[1]):parseFloat(t).toFixed(n)-0:Number(Number(t).toFixed(n))},convertUnit=function(e,t){return t=t||elementContainer_.getBaseUnit(),shortFloat(e/typeMap_[t])},setUnitAttr=function(e,t,n){e.setAttribute(t,n)},convertToNum=function(e,t){if(!isNaN(t))return t-0;if("%"===t.substr(-1)){var n=t.substr(0,t.length-1)/100,r=elementContainer_.getWidth(),a=elementContainer_.getHeight();return wAttrs.includes(e)?n*r:hAttrs.includes(e)?n*a:n*Math.sqrt(r*r+a*a)/Math.sqrt(2)}var i=t.substr(-2);return t.substr(0,t.length-2)*typeMap_[i]},isValidUnit=function(e,t,n){if(unitAttrs.includes(e))return!isNaN(t)||(t=t.toLowerCase(),Object.keys(typeMap_).some(function(e){return new RegExp("^-?[\\d\\.]+"+e+"$").test(t)}));if("id"===e){var r=!1;try{var a=elementContainer_.getElement(t);r=isNullish(a)||a===n}catch(e){}return r}return!0},HistoryEventTypes={BEFORE_APPLY:"before_apply",AFTER_APPLY:"after_apply",BEFORE_UNAPPLY:"before_unapply",AFTER_UNAPPLY:"after_unapply"},Command=function(){function e(){_classCallCheck(this,e)}return _createClass(e,[{key:"getText",value:function(){return this.text}}]),e}(),MoveElementCommand=function(e){function t(e,n,r,a){var i;return _classCallCheck(this,t),(i=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,i.text=a?"Move "+e.tagName+" to "+a:"Move "+e.tagName,i.oldNextSibling=n,i.oldParent=r,i.newNextSibling=e.nextSibling,i.newParent=e.parentNode,i}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.MoveElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this),this.elem=this.newParent.insertBefore(this.elem,this.newNextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this),this.elem=this.oldParent.insertBefore(this.elem,this.oldNextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){return[this.elem]}}]),t}();MoveElementCommand.type=MoveElementCommand.prototype.type;var InsertElementCommand=function(e){function t(e,n){var r;return _classCallCheck(this,t),(r=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,r.text=n||"Create "+e.tagName,r.parent=e.parentNode,r.nextSibling=r.elem.nextSibling,r}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.InsertElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this),this.elem=this.parent.insertBefore(this.elem,this.nextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this),this.parent=this.elem.parentNode,this.elem=this.elem.parentNode.removeChild(this.elem),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){return[this.elem]}}]),t}();InsertElementCommand.type=InsertElementCommand.prototype.type;var RemoveElementCommand=function(e){function t(e,n,r,a){var i;return _classCallCheck(this,t),(i=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,i.text=a||"Delete "+e.tagName,i.nextSibling=n,i.parent=r,removeElementFromListMap(e),i}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.RemoveElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this),removeElementFromListMap(this.elem),this.parent=this.elem.parentNode,this.elem=this.parent.removeChild(this.elem),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this),removeElementFromListMap(this.elem),isNullish(this.nextSibling)&&window.console&&console.log("Error: reference element was lost"),this.parent.insertBefore(this.elem,this.nextSibling),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){return[this.elem]}}]),t}();RemoveElementCommand.type=RemoveElementCommand.prototype.type;var ChangeElementCommand=function(e){function t(e,n,r){var a;for(var i in _classCallCheck(this,t),(a=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).elem=e,a.text=r?"Change "+e.tagName+" "+r:"Change "+e.tagName,a.newValues={},a.oldValues=n,n)a.newValues[i]="#text"===i?e.textContent:"#href"===i?getHref(e):e.getAttribute(i);return a}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.ChangeElementCommand"}},{key:"apply",value:function(e){var t=this;e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this);var n=!1;if(Object.entries(this.newValues).forEach(function(e){var r=_slicedToArray(e,2),a=r[0],i=r[1];i?"#text"===a?t.elem.textContent=i:"#href"===a?setHref(t.elem,i):t.elem.setAttribute(a,i):"#text"===a?t.elem.textContent="":(t.elem.setAttribute(a,""),t.elem.removeAttribute(a)),"transform"===a&&(n=!0)}),!n){var r=getRotationAngle(this.elem);if(r){var a=this.elem.getBBox(),i=["rotate(",r," ",a.x+a.width/2,",",a.y+a.height/2,")"].join("");i!==this.elem.getAttribute("transform")&&this.elem.setAttribute("transform",i)}}return e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this),!0}},{key:"unapply",value:function(e){var t=this;e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this);var n=!1;if(Object.entries(this.oldValues).forEach(function(e){var r=_slicedToArray(e,2),a=r[0],i=r[1];i?"#text"===a?t.elem.textContent=i:"#href"===a?setHref(t.elem,i):t.elem.setAttribute(a,i):"#text"===a?t.elem.textContent="":t.elem.removeAttribute(a),"transform"===a&&(n=!0)}),!n){var r=getRotationAngle(this.elem);if(r){var a=this.elem.getBBox(),i=["rotate(",r," ",a.x+a.width/2,",",a.y+a.height/2,")"].join("");i!==this.elem.getAttribute("transform")&&this.elem.setAttribute("transform",i)}}return removeElementFromListMap(this.elem),e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this),!0}},{key:"elements",value:function(){return[this.elem]}}]),t}();ChangeElementCommand.type=ChangeElementCommand.prototype.type;var BatchCommand=function(e){function t(e){var n;return _classCallCheck(this,t),(n=_possibleConstructorReturn(this,_getPrototypeOf(t).call(this))).text=e||"Batch Command",n.stack=[],n}return _inherits(t,Command),_createClass(t,[{key:"type",value:function(){return"svgedit.history.BatchCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY,this);for(var t=this.stack.length,n=0;n<t;++n)this.stack[n].apply(e);e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY,this);for(var t=this.stack.length-1;t>=0;t--)this.stack[t].unapply(e);e&&e.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){for(var e=[],t=this.stack.length;t--;)for(var n=this.stack[t].elements(),r=n.length;r--;)e.includes(n[r])||e.push(n[r]);return e}},{key:"addSubCommand",value:function(e){this.stack.push(e)}},{key:"isEmpty",value:function(){return!this.stack.length}}]),t}();BatchCommand.type=BatchCommand.prototype.type;var UndoManager=function(){function e(t){_classCallCheck(this,e),this.handler_=t||null,this.undoStackPointer=0,this.undoStack=[],this.undoChangeStackPointer=-1,this.undoableChangeStack=[]}return _createClass(e,[{key:"resetUndoStack",value:function(){this.undoStack=[],this.undoStackPointer=0}},{key:"getUndoStackSize",value:function(){return this.undoStackPointer}},{key:"getRedoStackSize",value:function(){return this.undoStack.length-this.undoStackPointer}},{key:"getNextUndoCommandText",value:function(){return this.undoStackPointer>0?this.undoStack[this.undoStackPointer-1].getText():""}},{key:"getNextRedoCommandText",value:function(){return this.undoStackPointer<this.undoStack.length?this.undoStack[this.undoStackPointer].getText():""}},{key:"undo",value:function(){this.undoStackPointer>0&&this.undoStack[--this.undoStackPointer].unapply(this.handler_)}},{key:"redo",value:function(){this.undoStackPointer<this.undoStack.length&&this.undoStack.length>0&&this.undoStack[this.undoStackPointer++].apply(this.handler_)}},{key:"addCommandToHistory",value:function(e){this.undoStackPointer<this.undoStack.length&&this.undoStack.length>0&&(this.undoStack=this.undoStack.splice(0,this.undoStackPointer)),this.undoStack.push(e),this.undoStackPointer=this.undoStack.length}},{key:"beginUndoableChange",value:function(e,t){for(var n=++this.undoChangeStackPointer,r=t.length,a=new Array(r),i=new Array(r);r--;){var s=t[r];isNullish(s)||(i[r]=s,a[r]=s.getAttribute(e))}this.undoableChangeStack[n]={attrName:e,oldValues:a,elements:i}}},{key:"finishUndoableChange",value:function(){for(var e=this.undoChangeStackPointer--,t=this.undoableChangeStack[e],n=t.attrName,r=new BatchCommand("Change "+n),a=t.elements.length;a--;){var i=t.elements[a];if(!isNullish(i)){var s={};s[n]=t.oldValues[a],s[n]!==i.getAttribute(n)&&r.addSubCommand(new ChangeElementCommand(i,s,n))}}return this.undoableChangeStack[e]=null,r}}]),e}(),hstry=Object.freeze({HistoryEventTypes:HistoryEventTypes,MoveElementCommand:MoveElementCommand,InsertElementCommand:InsertElementCommand,RemoveElementCommand:RemoveElementCommand,ChangeElementCommand:ChangeElementCommand,BatchCommand:BatchCommand,UndoManager:UndoManager}),NEAR_ZERO=1e-14,svg$1=document.createElementNS(NS.SVG,"svg"),transformPoint=function(e,t,n){return{x:n.a*e+n.c*t+n.e,y:n.b*e+n.d*t+n.f}},isIdentity=function(e){return 1===e.a&&0===e.b&&0===e.c&&1===e.d&&0===e.e&&0===e.f},matrixMultiply=function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];var r=t.reduceRight(function(e,t){return t.multiply(e)});return Math.abs(r.a)<NEAR_ZERO&&(r.a=0),Math.abs(r.b)<NEAR_ZERO&&(r.b=0),Math.abs(r.c)<NEAR_ZERO&&(r.c=0),Math.abs(r.d)<NEAR_ZERO&&(r.d=0),Math.abs(r.e)<NEAR_ZERO&&(r.e=0),Math.abs(r.f)<NEAR_ZERO&&(r.f=0),r},hasMatrixTransform=function(e){if(!e)return!1;for(var t=e.numberOfItems;t--;){var n=e.getItem(t);if(1===n.type&&!isIdentity(n.matrix))return!0}return!1},transformBox=function(e,t,n,r,a){var i=transformPoint(e,t,a),s=transformPoint(e+n,t,a),o=transformPoint(e,t+r,a),l=transformPoint(e+n,t+r,a),c=Math.min(i.x,s.x,o.x,l.x),u=Math.max(i.x,s.x,o.x,l.x),d=Math.min(i.y,s.y,o.y,l.y);return{tl:i,tr:s,bl:o,br:l,aabox:{x:c,y:d,width:u-c,height:Math.max(i.y,s.y,o.y,l.y)-d}}},transformListToTransform=function(e,t,n){if(isNullish(e))return svg$1.createSVGTransformFromMatrix(svg$1.createSVGMatrix());if(t=t||0,n=n||e.numberOfItems-1,(t=parseInt(t))>(n=parseInt(n))){var r=n;n=t,t=r}for(var a=svg$1.createSVGMatrix(),i=t;i<=n;++i){var s=i>=0&&i<e.numberOfItems?e.getItem(i).matrix:svg$1.createSVGMatrix();a=matrixMultiply(a,s)}return svg$1.createSVGTransformFromMatrix(a)},getMatrix=function(e){var t=getTransformList(e);return transformListToTransform(t).matrix},snapToAngle=function(e,t,n,r){var a=Math.PI/4,i=n-e,s=r-t,o=Math.atan2(s,i),l=Math.sqrt(i*i+s*s),c=Math.round(o/a)*a;return{x:e+l*Math.cos(c),y:t+l*Math.sin(c),a:c}},rectsIntersect=function(e,t){return t.x<e.x+e.width&&t.x+t.width>e.x&&t.y<e.y+e.height&&t.y+t.height>e.y},$$1=jQuery,segData={2:["x","y"],4:["x","y"],6:["x","y","x1","y1","x2","y2"],8:["x","y","x1","y1"],10:["x","y","r1","r2","angle","largeArcFlag","sweepFlag"],12:["x"],14:["y"],16:["x","y","x2","y2"],18:["x","y"]},uiStrings={},setUiStrings=function(e){Object.assign(uiStrings,e.ui)},pathFuncs=[],linkControlPts=!0,pathData={},setLinkControlPoints=function(e){linkControlPts=e},path=null,editorContext_=null,init$1=function(e){editorContext_=e,pathFuncs=[0,"ClosePath"];$$1.each(["Moveto","Lineto","CurvetoCubic","CurvetoQuadratic","Arc","LinetoHorizontal","LinetoVertical","CurvetoCubicSmooth","CurvetoQuadraticSmooth"],function(e,t){pathFuncs.push(t+"Abs"),pathFuncs.push(t+"Rel")})},insertItemBefore=function(e,t,n){var r=e.pathSegList;if(supportsPathInsertItemBefore())r.insertItemBefore(t,n);else{for(var a=r.numberOfItems,i=[],s=0;s<a;s++){var o=r.getItem(s);i.push(o)}r.clear();for(var l=0;l<a;l++)l===n&&r.appendItem(t),r.appendItem(i[l])}},ptObjToArr=function(e,t){return segData[e].map(function(e){return t[e]})},getGripPt=function(e,t){var n=e.path,r={x:t?t.x:e.item.x,y:t?t.y:e.item.y};n.matrix&&(r=transformPoint(r.x,r.y,n.matrix));var a=editorContext_.getCurrentZoom();return r.x*=a,r.y*=a,r},getPointFromGrip=function(e,t){var n={x:e.x,y:e.y};t.matrix&&(e=transformPoint(n.x,n.y,t.imatrix),n.x=e.x,n.y=e.y);var r=editorContext_.getCurrentZoom();return n.x/=r,n.y/=r,n},addPointGrip=function(e,t,n){var r=getGripContainer(),a=getElem("pathpointgrip_"+e);if(!a){a=document.createElementNS(NS.SVG,"circle");var i={id:"pathpointgrip_"+e,display:"none",r:4,fill:"#0FF",stroke:"#00F","stroke-width":2,cursor:"move",style:"pointer-events:all"};"pathNodeTooltip"in uiStrings&&(i["xlink:title"]=uiStrings.pathNodeTooltip),assignAttributes(a,i),a=r.appendChild(a),$$1("#pathpointgrip_"+e).dblclick(function(){path&&path.setSegType()})}return t&&n&&assignAttributes(a,{cx:t,cy:n,display:"inline"}),a},getGripContainer=function(){var e=getElem("pathpointgrip_container");e||((e=getElem("selectorParentGroup").appendChild(document.createElementNS(NS.SVG,"g"))).id="pathpointgrip_container");return e},addCtrlGrip=function(e){var t=getElem("ctrlpointgrip_"+e);if(t)return t;t=document.createElementNS(NS.SVG,"circle");var n={id:"ctrlpointgrip_"+e,display:"none",r:4,fill:"#0FF",stroke:"#55F","stroke-width":1,cursor:"move",style:"pointer-events:all"};return"pathCtrlPtTooltip"in uiStrings&&(n["xlink:title"]=uiStrings.pathCtrlPtTooltip),assignAttributes(t,n),getGripContainer().append(t),t},getCtrlLine=function(e){var t=getElem("ctrlLine_"+e);return t||(t=document.createElementNS(NS.SVG,"line"),assignAttributes(t,{id:"ctrlLine_"+e,stroke:"#555","stroke-width":1,style:"pointer-events:none"}),getGripContainer().append(t),t)},getPointGrip=function(e,t){var n=e.index,r=addPointGrip(n);if(t){var a=getGripPt(e);assignAttributes(r,{cx:a.x,cy:a.y,display:"inline"})}return r},getControlPoints=function(e){var t=e.item,n=e.index;if(!("x1"in t&&"x2"in t))return null;var r={};getGripContainer();for(var a=[path.segs[n-1].item,t],i=1;i<3;i++){var s=n+"c"+i,o=r["c"+i+"_line"]=getCtrlLine(s),l=getGripPt(e,{x:t["x"+i],y:t["y"+i]}),c=getGripPt(e,{x:a[i-1].x,y:a[i-1].y});assignAttributes(o,{x1:l.x,y1:l.y,x2:c.x,y2:c.y,display:"inline"}),r["c"+i+"_line"]=o;var u=r["c"+i]=addCtrlGrip(s);assignAttributes(u,{cx:l.x,cy:l.y,display:"inline"}),r["c"+i]=u}return r},replacePathSeg=function(e,t,n,r){var a=r||path.elem,i=a["createSVGPathSeg"+pathFuncs[e]].apply(a,_toConsumableArray(n));if(supportsPathReplaceItem())a.pathSegList.replaceItem(i,t);else{for(var s=a.pathSegList,o=s.numberOfItems,l=[],c=0;c<o;c++){var u=s.getItem(c);l.push(u)}s.clear();for(var d=0;d<o;d++)d===t?s.appendItem(i):s.appendItem(l[d])}},getSegSelector=function(e,t){var n=e.index,r=getElem("segline_"+n);if(!r){var a=getGripContainer();r=document.createElementNS(NS.SVG,"path"),assignAttributes(r,{id:"segline_"+n,display:"none",fill:"none",stroke:"#0FF","stroke-width":2,style:"pointer-events:none",d:"M0,0 0,0"}),a.append(r)}if(t){var i=e.prev;if(!i)return r.setAttribute("display","none"),r;var s=getGripPt(i);replacePathSeg(2,0,[s.x,s.y],r);for(var o=ptObjToArr(e.type,e.item),l=0;l<o.length;l+=2){var c=getGripPt(e,{x:o[l],y:o[l+1]});o[l]=c.x,o[l+1]=c.y}replacePathSeg(e.type,1,o,r)}return r},smoothControlPoints=function(e,t,n){var r=e.x-n.x,a=e.y-n.y,i=t.x-n.x,s=t.y-n.y;if(!(0===r&&0===a||0===i&&0===s)){var o=Math.sqrt(r*r+a*a),l=Math.sqrt(i*i+s*s),c=editorContext_.getSVGRoot().createSVGPoint(),u=editorContext_.getSVGRoot().createSVGPoint(),d=Math.atan2(a,r),h=Math.atan2(s,i);d<0&&(d+=2*Math.PI),h<0&&(h+=2*Math.PI);var p,g,f=Math.abs(d-h),m=Math.abs(Math.PI-f)/2;return d-h>0?(p=f<Math.PI?d+m:d-m,g=f<Math.PI?h-m:h+m):(p=f<Math.PI?d-m:d+m,g=f<Math.PI?h+m:h-m),c.x=o*Math.cos(p)+n.x,c.y=o*Math.sin(p)+n.y,u.x=l*Math.cos(g)+n.x,u.y=l*Math.sin(g)+n.y,[c,u]}},Segment=function(){function e(t,n){_classCallCheck(this,e),this.selected=!1,this.index=t,this.item=n,this.type=n.pathSegType,this.ctrlpts=[],this.ptgrip=null,this.segsel=null}return _createClass(e,[{key:"showCtrlPts",value:function(e){for(var t in this.ctrlpts)({}).hasOwnProperty.call(this.ctrlpts,t)&&this.ctrlpts[t].setAttribute("display",e?"inline":"none")}},{key:"selectCtrls",value:function(e){$$1("#ctrlpointgrip_"+this.index+"c1, #ctrlpointgrip_"+this.index+"c2").attr("fill",e?"#0FF":"#EEE")}},{key:"show",value:function(e){this.ptgrip&&(this.ptgrip.setAttribute("display",e?"inline":"none"),this.segsel.setAttribute("display",e?"inline":"none"),this.showCtrlPts(e))}},{key:"select",value:function(e){this.ptgrip&&(this.ptgrip.setAttribute("stroke",e?"#0FF":"#00F"),this.segsel.setAttribute("display",e?"inline":"none"),this.ctrlpts&&this.selectCtrls(e),this.selected=e)}},{key:"addGrip",value:function(){this.ptgrip=getPointGrip(this,!0),this.ctrlpts=getControlPoints(this),this.segsel=getSegSelector(this,!0)}},{key:"update",value:function(e){if(this.ptgrip){var t=getGripPt(this);assignAttributes(this.ptgrip,{cx:t.x,cy:t.y}),getSegSelector(this,!0),this.ctrlpts&&(e&&(this.item=path.elem.pathSegList.getItem(this.index),this.type=this.item.pathSegType),getControlPoints(this))}}},{key:"move",value:function(e,t){var n=this.item,r=this.ctrlpts?[n.x+=e,n.y+=t,n.x1,n.y1,n.x2+=e,n.y2+=t]:[n.x+=e,n.y+=t];if(replacePathSeg(this.type,this.index,r),this.next&&this.next.ctrlpts){var a=this.next.item,i=[a.x,a.y,a.x1+=e,a.y1+=t,a.x2,a.y2];replacePathSeg(this.next.type,this.next.index,i)}if(this.mate){var s=this.mate.item,o=[s.x+=e,s.y+=t];replacePathSeg(this.mate.type,this.mate.index,o)}this.update(!0),this.next&&this.next.update(!0)}},{key:"setLinked",value:function(e){var t,n,r;if(2===e){if(n=1,!(t=this.next))return;r=this.item}else{if(n=2,!(t=this.prev))return;r=t.item}var a=t.item;a["x"+n]=r.x+(r.x-this.item["x"+e]),a["y"+n]=r.y+(r.y-this.item["y"+e]);var i=[a.x,a.y,a.x1,a.y1,a.x2,a.y2];replacePathSeg(t.type,t.index,i),t.update(!0)}},{key:"moveCtrl",value:function(e,t,n){var r=this.item;r["x"+e]+=t,r["y"+e]+=n;var a=[r.x,r.y,r.x1,r.y1,r.x2,r.y2];replacePathSeg(this.type,this.index,a),this.update(!0)}},{key:"setType",value:function(e,t){replacePathSeg(e,this.index,t),this.type=e,this.item=path.elem.pathSegList.getItem(this.index),this.showCtrlPts(6===e),this.ctrlpts=getControlPoints(this),this.update(!0)}}]),e}(),Path=function(){function e(t){if(_classCallCheck(this,e),!t||"path"!==t.tagName)throw new Error("svgedit.path.Path constructed without a <path> element");this.elem=t,this.segs=[],this.selected_pts=[],path=this,this.init()}return _createClass(e,[{key:"init",value:function(){$$1(getGripContainer()).find("*").each(function(){$$1(this).attr("display","none")});var e=this.elem.pathSegList,t=e.numberOfItems;this.segs=[],this.selected_pts=[],this.first_seg=null;for(var n=0;n<t;n++){var r=e.getItem(n),a=new Segment(n,r);a.path=this,this.segs.push(a)}for(var i=this.segs,s=null,o=0;o<t;o++){var l=i[o],c=o+1>=t?null:i[o+1],u=o-1<0?null:i[o-1];if(2===l.type){if(u&&1!==u.type){var d=i[s];d.next=i[s+1],d.next.prev=d,d.addGrip()}s=o}else if(c&&1===c.type)l.next=i[s+1],l.next.prev=l,l.mate=i[s],l.addGrip(),isNullish(this.first_seg)&&(this.first_seg=l);else if(c)1!==l.type&&(l.addGrip(),c&&2!==c.type&&(l.next=c,l.next.prev=l));else if(1!==l.type){var h=i[s];h.next=i[s+1],h.next.prev=h,h.addGrip(),l.addGrip(),this.first_seg||(this.first_seg=i[s])}}return this}},{key:"eachSeg",value:function(e){for(var t=this.segs.length,n=0;n<t;n++){if(!1===e.call(this.segs[n],n))break}}},{key:"addSeg",value:function(e){var t=this.segs[e];if(t.prev){var n,r,a,i=t.prev;switch(t.item.pathSegType){case 4:r=(t.item.x+i.item.x)/2,a=(t.item.y+i.item.y)/2,n=this.elem.createSVGPathSegLinetoAbs(r,a);break;case 6:var s=(i.item.x+t.item.x1)/2,o=(t.item.x1+t.item.x2)/2,l=(t.item.x2+t.item.x)/2,c=(s+o)/2,u=(o+l)/2;r=(c+u)/2;var d=(i.item.y+t.item.y1)/2,h=(t.item.y1+t.item.y2)/2,p=(t.item.y2+t.item.y)/2,g=(d+h)/2,f=(h+p)/2;a=(g+f)/2,n=this.elem.createSVGPathSegCurvetoCubicAbs(r,a,s,d,c,g);var m=[t.item.x,t.item.y,u,f,l,p];replacePathSeg(t.type,e,m)}insertItemBefore(this.elem,n,e)}}},{key:"deleteSeg",value:function(e){var t=this.segs[e],n=this.elem.pathSegList;t.show(!1);var r=t.next;if(t.mate){var a=[r.item.x,r.item.y];replacePathSeg(2,r.index,a),replacePathSeg(4,t.index,a),n.removeItem(t.mate.index)}else if(t.prev)n.removeItem(e);else{var i=[r.item.x,r.item.y];replacePathSeg(2,t.next.index,i),n.removeItem(e)}}},{key:"removePtFromSelection",value:function(e){var t=this.selected_pts.indexOf(e);-1!==t&&(this.segs[e].select(!1),this.selected_pts.splice(t,1))}},{key:"clearSelection",value:function(){this.eachSeg(function(){this.select(!1)}),this.selected_pts=[]}},{key:"storeD",value:function(){this.last_d=this.elem.getAttribute("d")}},{key:"show",value:function(e){return this.eachSeg(function(){this.show(e)}),e&&this.selectPt(this.first_seg.index),this}},{key:"movePts",value:function(e,t){for(var n=this.selected_pts.length;n--;){this.segs[this.selected_pts[n]].move(e,t)}}},{key:"moveCtrl",value:function(e,t){var n=this.segs[this.selected_pts[0]];n.moveCtrl(this.dragctrl,e,t),linkControlPts&&n.setLinked(this.dragctrl)}},{key:"setSegType",value:function(e){this.storeD();for(var t,n=this.selected_pts.length;n--;){var r=this.selected_pts[n],a=this.segs[r],i=a.prev;if(i){if(!e)t="Toggle Path Segment Type",e=6===a.type?4:6;e=Number(e);var s=a.item.x,o=a.item.y,l=i.item.x,c=i.item.y,u=void 0;switch(e){case 6:if(a.olditem){var d=a.olditem;u=[s,o,d.x1,d.y1,d.x2,d.y2]}else{var h=s-l,p=o-c;u=[s,o,l+h/3,c+p/3,s-h/3,o-p/3]}break;case 4:u=[s,o],a.olditem=a.item}a.setType(e,u)}}path.endChanges(t)}},{key:"selectPt",value:function(e,t){this.clearSelection(),isNullish(e)&&this.eachSeg(function(t){this.prev&&(e=t)}),this.addPtsToSelection(e),t&&(this.dragctrl=t,linkControlPts&&this.segs[e].setLinked(t))}},{key:"update",value:function(){var e=this.elem;return getRotationAngle(e)?(this.matrix=getMatrix(e),this.imatrix=this.matrix.inverse()):(this.matrix=null,this.imatrix=null),this.eachSeg(function(t){this.item=e.pathSegList.getItem(t),this.update()}),this}},{key:"endChanges",value:function(e){isWebkit()&&editorContext_.resetD(this.elem);var t=new ChangeElementCommand(this.elem,{d:this.last_d},e);editorContext_.endChanges({cmd:t,elem:this.elem})}},{key:"addPtsToSelection",value:function(t){Array.isArray(t)||(t=[t]);for(var n=0;n<t.length;n++){var r=t[n];this.segs[r].ptgrip&&!this.selected_pts.includes(r)&&r>=0&&this.selected_pts.push(r)}this.selected_pts.sort();var a=this.selected_pts.length,i=[];for(i.length=a;a--;){var s=this.selected_pts[a],o=this.segs[s];o.select(!0),i[a]=o.ptgrip}var l=e.subpathIsClosed(this.selected_pts[0]);editorContext_.addPtsToSelection({grips:i,closedSubpath:l})}}]),e}();Path.subpathIsClosed=function(e){var t=!1;return path.eachSeg(function(n){return n<=e||2!==this.type&&(1!==this.type||(t=!0,!1))}),t};var newcx,newcy,oldcx,oldcy,angle,getPath_=function(e){var t=pathData[e.id];return t||(t=pathData[e.id]=new Path(e)),t},removePath_=function(e){e in pathData&&delete pathData[e]},getRotVals=function(e,t){var n=e-oldcx,r=t-oldcy,a=Math.sqrt(n*n+r*r),i=Math.atan2(r,n)+angle;return n=a*Math.cos(i)+oldcx,r=a*Math.sin(i)+oldcy,n-=newcx,r-=newcy,a=Math.sqrt(n*n+r*r),i=Math.atan2(r,n)-angle,{x:a*Math.cos(i)+newcx,y:a*Math.sin(i)+newcy}},recalcRotatedPath=function(){var e=path.elem;if(angle=getRotationAngle(e,!0)){var t=path.oldbbox;oldcx=t.x+t.width/2,oldcy=t.y+t.height/2;var n=getBBox(e);newcx=n.x+n.width/2,newcy=n.y+n.height/2;var r=newcx-oldcx,a=newcy-oldcy,i=Math.sqrt(r*r+a*a),s=Math.atan2(a,r)+angle;newcx=i*Math.cos(s)+oldcx,newcy=i*Math.sin(s)+oldcy;for(var o=e.pathSegList,l=o.numberOfItems;l;){l-=1;var c=o.getItem(l),u=c.pathSegType;if(1!==u){var d=getRotVals(c.x,c.y),h=[d.x,d.y];if(!isNullish(c.x1)&&!isNullish(c.x2)){var p=getRotVals(c.x1,c.y1),g=getRotVals(c.x2,c.y2);h.splice(h.length,0,p.x,p.y,g.x,g.y)}replacePathSeg(u,l,h)}}getBBox(e);var f=editorContext_.getSVGRoot().createSVGTransform(),m=getTransformList(e);f.setRotate(180*angle/Math.PI,newcx,newcy),m.replaceItem(f,0)}},clearData=function(){pathData={}},reorientGrads=function(e,t){for(var n=getBBox(e),r=0;r<2;r++){var a=0===r?"fill":"stroke",i=e.getAttribute(a);if(i&&i.startsWith("url(")){var s=getRefElem(i);if("linearGradient"===s.tagName){var o=s.getAttribute("x1")||0,l=s.getAttribute("y1")||0,c=s.getAttribute("x2")||1,u=s.getAttribute("y2")||0;o=n.width*o+n.x,l=n.height*l+n.y,c=n.width*c+n.x,u=n.height*u+n.y;var d=transformPoint(o,l,t),h=transformPoint(c,u,t),p={};p.x1=(d.x-n.x)/n.width,p.y1=(d.y-n.y)/n.height,p.x2=(h.x-n.x)/n.width,p.y2=(h.y-n.y)/n.height;var 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w=r(t.x,t.y);t.width=a(t.width),t.height=i(t.height),t.x=w.x+Math.min(0,t.width),t.y=w.y+Math.min(0,t.height),t.width=Math.abs(t.width),t.height=Math.abs(t.height)}o();break;case"ellipse":var $=r(t.cx,t.cy);t.cx=$.x,t.cy=$.y,t.rx=a(t.rx),t.ry=i(t.ry),t.rx=Math.abs(t.rx),t.ry=Math.abs(t.ry),o();break;case"circle":var k=r(t.cx,t.cy);t.cx=k.x,t.cy=k.y;var A=transformBox(l.x,l.y,l.width,l.height,n),E=A.tr.x-A.tl.x,N=A.bl.y-A.tl.y;t.r=Math.min(E/2,N/2),t.r&&(t.r=Math.abs(t.r)),o();break;case"line":var T=r(t.x1,t.y1),P=r(t.x2,t.y2);t.x1=T.x,t.y1=T.y,t.x2=P.x,t.y2=P.y;case"text":case"tspan":case"use":o();break;case"g":var G=$$6(e).data("gsvg");G&&assignAttributes(G,t,1e3,!0);break;case"polyline":case"polygon":for(var L=t.points.length,I=0;I<L;++I){var M=t.points[I],R=r(M.x,M.y),O=R.x,B=R.y;t.points[I].x=O,t.points[I].y=B}for(var V="",j=0;j<L;++j){var F=t.points[j];V+=F.x+","+F.y+" "}e.setAttribute("points",V);break;case"path":var D=e.pathSegList,U=D.numberOfItems;t.d=[];for(var H=0;H<U;++H){var z=D.getItem(H);t.d[H]={type:z.pathSegType,x:z.x,y:z.y,x1:z.x1,y1:z.y1,x2:z.x2,y2:z.y2,r1:z.r1,r2:z.r2,angle:z.angle,largeArcFlag:z.largeArcFlag,sweepFlag:z.sweepFlag}}U=t.d.length;var q=t.d[0],W=r(q.x,q.y);t.d[0].x=W.x,t.d[0].y=W.y;for(var Y=1;Y<U;++Y){var X=t.d[Y];if(X.type%2==0){var Q=r(void 0!==X.x?X.x:W.x,void 0!==X.y?X.y:W.y),K=r(X.x1,X.y1),Z=r(X.x2,X.y2);X.x=Q.x,X.y=Q.y,X.x1=K.x,X.y1=K.y,X.x2=Z.x,X.y2=Z.y,X.r1=a(X.r1),X.r2=i(X.r2)}else X.x=a(X.x),X.y=i(X.y),X.x1=a(X.x1),X.y1=i(X.y1),X.x2=a(X.x2),X.y2=i(X.y2),X.r1=a(X.r1),X.r2=i(X.r2)}var J="";U=t.d.length;for(var ee=0;ee<U;++ee){var te=t.d[ee],ne=te.type;switch(J+=pathMap$1[ne],ne){case 13:case 12:J+=te.x+" ";break;case 15:case 14:J+=te.y+" ";break;case 3:case 5:case 19:case 2:case 4:case 18:J+=te.x+","+te.y+" ";break;case 7:case 6:J+=te.x1+","+te.y1+" "+te.x2+","+te.y2+" "+te.x+","+te.y+" ";break;case 9:case 8:J+=te.x1+","+te.y1+" "+te.x+","+te.y+" ";break;case 11:case 10:J+=te.r1+","+te.r2+" "+te.angle+" 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t.setAttribute("transform",""),t.removeAttribute("transform"),null;if(r){for(var o=[],l=r.numberOfItems;l--;){var c=r.getItem(l);1===c.type?o.push([c.matrix,l]):o.length&&(o=[])}if(2===o.length){var u=n.createSVGTransformFromMatrix(matrixMultiply(o[1][0],o[0][0]));r.removeItem(o[0][1]),r.removeItem(o[1][1]),r.insertItemBefore(u,o[1][1])}if((l=r.numberOfItems)>=2&&1===r.getItem(l-2).type&&2===r.getItem(l-1).type){var d=n.createSVGTransform(),h=matrixMultiply(r.getItem(l-2).matrix,r.getItem(l-1).matrix);d.setMatrix(h),r.removeItem(l-2),r.removeItem(l-2),r.appendItem(d)}}switch(t.tagName){case"line":case"polyline":case"polygon":case"path":break;default:if(1===r.numberOfItems&&1===r.getItem(0).type||2===r.numberOfItems&&1===r.getItem(0).type&&4===r.getItem(0).type)return null}var p,g,f=$$7(t).data("gsvg"),m=new BatchCommand("Transform"),v={},_=null,b=[];switch(t.tagName){case"line":b=["x1","y1","x2","y2"];break;case"circle":b=["cx","cy","r"];break;case"ellipse":b=["cx","cy","rx","ry"];break;case"foreignObject":case"rect":case"image":b=["width","height","x","y"];break;case"use":case"text":case"tspan":b=["x","y"];break;case"polygon":case"polyline":(_={}).points=t.getAttribute("points");var y=t.points,x=y.numberOfItems;v.points=new Array(x);for(var C=0;C<x;++C){var S=y.getItem(C);v.points[C]={x:S.x,y:S.y}}break;case"path":(_={}).d=t.getAttribute("d"),v.d=t.getAttribute("d")}if(b.length?(v=$$7(t).attr(b),$$7.each(v,function(e,t){v[e]=convertToNum(e,t)})):f&&(v={x:$$7(f).attr("x")||0,y:$$7(f).attr("y")||0}),isNullish(_)&&(_=$$7.extend(!0,{},v),$$7.each(_,function(e,t){_[e]=convertToNum(e,t)})),_.transform=context_.getStartTransform()||"","g"===t.tagName&&!f||"a"===t.tagName){var w=getBBox(t);p={x:w.x+w.width/2,y:w.y+w.height/2},g=transformPoint(w.x+w.width/2,w.y+w.height/2,transformListToTransform(r).matrix);var $=getRotationAngle(t);if($){var k,A=$*Math.PI/180;k=Math.abs(A)>1e-10?Math.sin(A)/(1-Math.cos(A)):2/A;for(var E=0;E<r.numberOfItems;++E){var N=r.getItem(E);if(4===N.type){var T=N.matrix;p.y=(k*T.e+T.f)/2,p.x=(T.e-k*T.f)/2,r.removeItem(E);break}}}var P,G,L=r.numberOfItems,I=0,M=0,R=0;if(L&&(P=r.getItem(0).matrix),L>=3&&3===r.getItem(L-2).type&&2===r.getItem(L-3).type&&2===r.getItem(L-1).type){R=3;for(var O=r.getItem(L-3).matrix,B=r.getItem(L-2).matrix,V=r.getItem(L-1).matrix,j=t.childNodes,F=j.length;F--;){var D=j.item(F);if(I=0,M=0,1===D.nodeType){var U=getTransformList(D);if(!U)continue;var H=transformListToTransform(U).matrix,z=getRotationAngle(D);if(G=context_.getStartTransform(),context_.setStartTransform(D.getAttribute("transform")),z||hasMatrixTransform(U)){var q=n.createSVGTransform();q.setMatrix(matrixMultiply(O,B,V,H)),U.clear(),U.appendItem(q)}else{var W=matrixMultiply(H.inverse(),V,H),Y=n.createSVGMatrix();Y.e=-W.e,Y.f=-W.f;var X=matrixMultiply(Y.inverse(),H.inverse(),O,B,V,H,W.inverse()),Q=n.createSVGTransform(),K=n.createSVGTransform(),Z=n.createSVGTransform();Q.setTranslate(W.e,W.f),K.setScale(X.a,X.d),Z.setTranslate(Y.e,Y.f),U.appendItem(Z),U.appendItem(K),U.appendItem(Q)}m.addSubCommand(e(D)),context_.setStartTransform(G)}}r.removeItem(L-1),r.removeItem(L-2),r.removeItem(L-3)}else if(L>=3&&1===r.getItem(L-1).type){R=3;var J=transformListToTransform(r).matrix,ee=n.createSVGTransform();ee.setMatrix(J),r.clear(),r.appendItem(ee)}else if((1===L||L>1&&3!==r.getItem(1).type)&&2===r.getItem(0).type){R=2;var te=transformListToTransform(r).matrix;r.removeItem(0);var ne=transformListToTransform(r).matrix.inverse(),re=matrixMultiply(ne,te);if(I=re.e,M=re.f,0!==I||0!==M){for(var ae=t.childNodes,ie=ae.length,se=[];ie--;){var oe=ae.item(ie);if(1===oe.nodeType){if(oe.getAttribute("clip-path")){var le=oe.getAttribute("clip-path");se.includes(le)||(updateClipPath(le,I,M),se.push(le))}G=context_.getStartTransform(),context_.setStartTransform(oe.getAttribute("transform"));var ce=getTransformList(oe);if(ce){var ue=n.createSVGTransform();ue.setTranslate(I,M),ce.numberOfItems?ce.insertItemBefore(ue,0):ce.appendItem(ue),m.addSubCommand(e(oe));for(var de=t.getElementsByTagNameNS(NS.SVG,"use"),he="#"+oe.id,pe=de.length;pe--;){var ge=de.item(pe);if(he===getHref(ge)){var fe=n.createSVGTransform();fe.setTranslate(-I,-M),getTransformList(ge).insertItemBefore(fe,0),m.addSubCommand(e(ge))}}context_.setStartTransform(G)}}}context_.setStartTransform(G)}}else{if(1!==L||1!==r.getItem(0).type||$){if($){var me=n.createSVGTransform();me.setRotate($,g.x,g.y),r.numberOfItems?r.insertItemBefore(me,0):r.appendItem(me)}return 0===r.numberOfItems&&t.removeAttribute("transform"),null}R=1;for(var ve=r.getItem(0).matrix,_e=t.childNodes,be=_e.length;be--;){var ye=_e.item(be);if(1===ye.nodeType){G=context_.getStartTransform(),context_.setStartTransform(ye.getAttribute("transform"));var xe=getTransformList(ye);if(!xe)continue;var Ce=matrixMultiply(ve,transformListToTransform(xe).matrix),Se=n.createSVGTransform();Se.setMatrix(Ce),xe.clear(),xe.appendItem(Se,0),m.addSubCommand(e(ye)),context_.setStartTransform(G);var we=ye.getAttribute("stroke-width");if("none"!==ye.getAttribute("stroke")&&!isNaN(we)){var $e=(Math.abs(Ce.a)+Math.abs(Ce.d))/2;ye.setAttribute("stroke-width",we*$e)}}}r.clear()}if(2===R){if($){g={x:p.x+P.e,y:p.y+P.f};var ke=n.createSVGTransform();ke.setRotate($,g.x,g.y),r.numberOfItems?r.insertItemBefore(ke,0):r.appendItem(ke)}}else if(3===R){var Ae=transformListToTransform(r).matrix,Ee=n.createSVGTransform();Ee.setRotate($,p.x,p.y);var Ne=Ee.matrix,Te=n.createSVGTransform();Te.setRotate($,g.x,g.y);var Pe=Te.matrix.inverse(),Ge=Ae.inverse(),Le=matrixMultiply(Ge,Pe,Ne,Ae);if(I=Le.e,M=Le.f,0!==I||0!==M)for(var Ie=t.childNodes,Me=Ie.length;Me--;){var Re=Ie.item(Me);if(1===Re.nodeType){G=context_.getStartTransform(),context_.setStartTransform(Re.getAttribute("transform"));var Oe=getTransformList(Re),Be=n.createSVGTransform();Be.setTranslate(I,M),Oe.numberOfItems?Oe.insertItemBefore(Be,0):Oe.appendItem(Be),m.addSubCommand(e(Re)),context_.setStartTransform(G)}}$&&(r.numberOfItems?r.insertItemBefore(Te,0):r.appendItem(Te))}}else{var Ve,je=getBBox(t);if(!je&&"path"!==t.tagName)return null;var Fe=getRotationAngle(t);if(Fe){p={x:je.x+je.width/2,y:je.y+je.height/2},g=transformPoint(je.x+je.width/2,je.y+je.height/2,transformListToTransform(r).matrix);for(var De=Fe*Math.PI/180,Ue=Math.abs(De)>1e-10?Math.sin(De)/(1-Math.cos(De)):2/De,He=0;He<r.numberOfItems;++He){var ze=r.getItem(He);if(4===ze.type){var qe=ze.matrix;p.y=(Ue*qe.e+qe.f)/2,p.x=(qe.e-Ue*qe.f)/2,r.removeItem(He);break}}}var We=0,Ye=r.numberOfItems;if(!isWebkit()){var Xe=t.getAttribute("fill");if(Xe&&Xe.startsWith("url(")){var Qe=getRefElem(Xe),Ke="pattern";if(Qe.tagName!==Ke&&(Ke="gradient"),"userSpaceOnUse"===Qe.getAttribute(Ke+"Units")){Ve=transformListToTransform(r).matrix;var Ze=getTransformList(Qe),Je=transformListToTransform(Ze).matrix,et="matrix("+[(Ve=matrixMultiply(Ve,Je)).a,Ve.b,Ve.c,Ve.d,Ve.e,Ve.f].join(",")+")";Qe.setAttribute(Ke+"Transform",et)}}}if(Ye>=3&&3===r.getItem(Ye-2).type&&2===r.getItem(Ye-3).type&&2===r.getItem(Ye-1).type)We=3,Ve=transformListToTransform(r,Ye-3,Ye-1).matrix,r.removeItem(Ye-1),r.removeItem(Ye-2),r.removeItem(Ye-3);else if(4===Ye&&1===r.getItem(Ye-1).type){We=3,Ve=transformListToTransform(r).matrix;var tt=n.createSVGTransform();tt.setMatrix(Ve),r.clear(),r.appendItem(tt),Ve=n.createSVGMatrix()}else if((1===Ye||Ye>1&&3!==r.getItem(1).type)&&2===r.getItem(0).type){We=2;var nt=r.getItem(0).matrix,rt=transformListToTransform(r,1).matrix,at=rt.inverse();Ve=matrixMultiply(at,nt,rt),r.removeItem(0)}else{if(1!==Ye||1!==r.getItem(0).type||Fe){if(Fe){var it=n.createSVGTransform();it.setRotate(Fe,g.x,g.y),r.numberOfItems?r.insertItemBefore(it,0):r.appendItem(it)}return 0===r.numberOfItems&&t.removeAttribute("transform"),null}switch(Ve=transformListToTransform(r).matrix,t.tagName){case"line":v=$$7(t).attr(["x1","y1","x2","y2"]);case"polyline":case"polygon":if(v.points=t.getAttribute("points"),v.points){var st=t.points,ot=st.numberOfItems;v.points=new Array(ot);for(var lt=0;lt<ot;++lt){var ct=st.getItem(lt);v.points[lt]={x:ct.x,y:ct.y}}}case"path":v.d=t.getAttribute("d"),We=1,r.clear()}}if(1!==We&&2!==We&&3!==We||remapElement(t,v,Ve),2===We){if(Fe){hasMatrixTransform(r)||(g={x:p.x+Ve.e,y:p.y+Ve.f});var ut=n.createSVGTransform();ut.setRotate(Fe,g.x,g.y),r.numberOfItems?r.insertItemBefore(ut,0):r.appendItem(ut)}if("text"===t.tagName)for(var dt=t.childNodes,ht=dt.length;ht--;){var pt=dt.item(ht);if("tspan"===pt.tagName){var gt={x:$$7(pt).attr("x")||0,y:$$7(pt).attr("y")||0};remapElement(pt,gt,Ve)}}}else if(3===We&&Fe){var ft=transformListToTransform(r).matrix,mt=n.createSVGTransform();mt.setRotate(Fe,p.x,p.y);var vt=mt.matrix,_t=n.createSVGTransform();_t.setRotate(Fe,g.x,g.y);var bt=_t.matrix.inverse(),yt=ft.inverse(),xt=matrixMultiply(yt,bt,vt,ft);remapElement(t,v,xt),Fe&&(r.numberOfItems?r.insertItemBefore(_t,0):r.appendItem(_t))}}return 0===r.numberOfItems&&t.removeAttribute("transform"),m.addSubCommand(new ChangeElementCommand(t,_)),m},$$8=jQuery,gripRadius=isTouch()?10:4,Selector=function(){function e(t,n,r){_classCallCheck(this,e),this.id=t,this.selectedElement=n,this.locked=!0,this.selectorGroup=svgFactory_.createSVGElement({element:"g",attr:{id:"selectorGroup"+this.id}}),this.selectorRect=this.selectorGroup.appendChild(svgFactory_.createSVGElement({element:"path",attr:{id:"selectedBox"+this.id,fill:"none",stroke:"#22C","stroke-width":"1","stroke-dasharray":"5,5",style:"pointer-events:none"}})),this.gripCoords={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.reset(this.selectedElement,r)}return _createClass(e,[{key:"reset",value:function(e,t){this.locked=!0,this.selectedElement=e,this.resize(t),this.selectorGroup.setAttribute("display","inline")}},{key:"showGrips",value:function(t){var n=t?"inline":"none";selectorManager_.selectorGripsGroup.setAttribute("display",n);var r=this.selectedElement;this.hasGrips=t,r&&t&&(this.selectorGroup.append(selectorManager_.selectorGripsGroup),e.updateGripCursors(getRotationAngle(r)))}},{key:"resize",value:function(e){var t=this.selectorRect,n=selectorManager_,r=n.selectorGrips,a=this.selectedElement,i=a.getAttribute("stroke-width"),s=svgFactory_.getCurrentZoom(),o=1/s;"none"===a.getAttribute("stroke")||isNaN(i)||(o+=i/2);var l=a.tagName;"text"===l&&(o+=2/s);var c=getTransformList(a),u=transformListToTransform(c).matrix;if(u.e*=s,u.f*=s,e||(e=getBBox(a)),"g"===l&&!$$8.data(a,"gsvg")){var d=getStrokedBBox([a.childNodes]);d&&(e=d)}var h=e.x,p=e.y,g=e.width,f=e.height;o*=s;var m=transformBox(h*s,p*s,g*s,f*s,u),v=m.aabox,_=v.x-o,b=v.y-o,y=v.width+2*o,x=v.height+2*o,C=_+y/2,S=b+x/2,w=getRotationAngle(a);if(w){var $=svgFactory_.svgRoot().createSVGTransform();$.setRotate(-w,C,S);var k=$.matrix;m.tl=transformPoint(m.tl.x,m.tl.y,k),m.tr=transformPoint(m.tr.x,m.tr.y,k),m.bl=transformPoint(m.bl.x,m.bl.y,k),m.br=transformPoint(m.br.x,m.br.y,k);var A=m.tl,E=A.x,N=A.y,T=A.x,P=A.y,G=Math.min,L=Math.max;_=E=G(E,G(m.tr.x,G(m.bl.x,m.br.x)))-o,b=N=G(N,G(m.tr.y,G(m.bl.y,m.br.y)))-o,y=(T=L(T,L(m.tr.x,L(m.bl.x,m.br.x)))+o)-E,x=(P=L(P,L(m.tr.y,L(m.bl.y,m.br.y)))+o)-N}var I="M"+_+","+b+" L"+(_+y)+","+b+" "+(_+y)+","+(b+x)+" "+_+","+(b+x)+"z";t.setAttribute("d",I);var M=w?"rotate("+[w,C,S].join(",")+")":"";this.selectorGroup.setAttribute("transform",M),this.gripCoords={nw:[_,b],ne:[_+y,b],sw:[_,b+x],se:[_+y,b+x],n:[_+y/2,b],w:[_,b+x/2],e:[_+y,b+x/2],s:[_+y/2,b+x]},Object.entries(this.gripCoords).forEach(function(e){var t=_slicedToArray(e,2),n=t[0],a=t[1];r[n].setAttribute("cx",a[0]),r[n].setAttribute("cy",a[1])}),n.rotateGripConnector.setAttribute("x1",_+y/2),n.rotateGripConnector.setAttribute("y1",b),n.rotateGripConnector.setAttribute("x2",_+y/2),n.rotateGripConnector.setAttribute("y2",b-5*gripRadius),n.rotateGrip.setAttribute("cx",_+y/2),n.rotateGrip.setAttribute("cy",b-5*gripRadius)}}]),e}();Selector.updateGripCursors=function(e){var t=Object.keys(selectorManager_.selectorGrips),n=Math.round(e/45);for(n<0&&(n+=8);n>0;)t.push(t.shift()),n--;Object.values(selectorManager_.selectorGrips).forEach(function(e,n){e.setAttribute("style","cursor:"+t[n]+"-resize")})};var SelectorManager=function(){function e(){_classCallCheck(this,e),this.selectorParentGroup=null,this.rubberBandBox=null,this.selectors=[],this.selectorMap={},this.selectorGrips={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.selectorGripsGroup=null,this.rotateGripConnector=null,this.rotateGrip=null,this.initGroup()}return _createClass(e,[{key:"initGroup",value:function(){var e=this;if(this.selectorParentGroup&&this.selectorParentGroup.parentNode&&this.selectorParentGroup.remove(),this.selectorParentGroup=svgFactory_.createSVGElement({element:"g",attr:{id:"selectorParentGroup"}}),this.selectorGripsGroup=svgFactory_.createSVGElement({element:"g",attr:{display:"none"}}),this.selectorParentGroup.append(this.selectorGripsGroup),svgFactory_.svgRoot().append(this.selectorParentGroup),this.selectorMap={},this.selectors=[],this.rubberBandBox=null,Object.keys(this.selectorGrips).forEach(function(t){var n=svgFactory_.createSVGElement({element:"circle",attr:{id:"selectorGrip_resize_"+t,fill:"#22C",r:gripRadius,style:"cursor:"+t+"-resize","stroke-width":2,"pointer-events":"all"}});$$8.data(n,"dir",t),$$8.data(n,"type","resize"),e.selectorGrips[t]=e.selectorGripsGroup.appendChild(n)}),this.rotateGripConnector=this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({element:"line",attr:{id:"selectorGrip_rotateconnector",stroke:"#22C","stroke-width":"1"}})),this.rotateGrip=this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({element:"circle",attr:{id:"selectorGrip_rotate",fill:"lime",r:gripRadius,stroke:"#22C","stroke-width":2,style:"cursor:url("+config_.imgPath+"rotate.png) 12 12, auto;"}})),$$8.data(this.rotateGrip,"type","rotate"),!$$8("#canvasBackground").length){var t=_slicedToArray(config_.dimensions,2),n=t[0],r=t[1],a=svgFactory_.createSVGElement({element:"svg",attr:{id:"canvasBackground",width:n,height:r,x:0,y:0,overflow:isWebkit()?"none":"visible",style:"pointer-events:none"}}),i=svgFactory_.createSVGElement({element:"rect",attr:{width:"100%",height:"100%",x:0,y:0,"stroke-width":1,stroke:"#000",fill:"#FFF",style:"pointer-events:none"}});a.append(i),svgFactory_.svgRoot().insertBefore(a,svgFactory_.svgContent())}}},{key:"requestSelector",value:function(e,t){if(isNullish(e))return null;var n=this.selectors.length;if("object"===_typeof(this.selectorMap[e.id]))return this.selectorMap[e.id].locked=!0,this.selectorMap[e.id];for(var r=0;r<n;++r)if(this.selectors[r]&&!this.selectors[r].locked)return this.selectors[r].locked=!0,this.selectors[r].reset(e,t),this.selectorMap[e.id]=this.selectors[r],this.selectors[r];return this.selectors[n]=new Selector(n,e,t),this.selectorParentGroup.append(this.selectors[n].selectorGroup),this.selectorMap[e.id]=this.selectors[n],this.selectors[n]}},{key:"releaseSelector",value:function(e){if(!isNullish(e)){var t=this.selectors.length,n=this.selectorMap[e.id];n.locked||console.log("WARNING! selector was released but was already unlocked");for(var r=0;r<t;++r)if(this.selectors[r]&&this.selectors[r]===n){delete this.selectorMap[e.id],n.locked=!1,n.selectedElement=null,n.showGrips(!1);try{n.selectorGroup.setAttribute("display","none")}catch(e){}break}}}},{key:"getRubberBandBox",value:function(){return this.rubberBandBox||(this.rubberBandBox=this.selectorParentGroup.appendChild(svgFactory_.createSVGElement({element:"rect",attr:{id:"selectorRubberBand",fill:"#22C","fill-opacity":.15,stroke:"#22C","stroke-width":.5,display:"none",style:"pointer-events:none"}}))),this.rubberBandBox}}]),e}(),init$6=function(e,t){config_=e,svgFactory_=t,selectorManager_=new SelectorManager},getSelectorManager=function(){return selectorManager_},$$9=jQueryPluginSVG(jQuery),MoveElementCommand$1=MoveElementCommand,InsertElementCommand$1=InsertElementCommand,RemoveElementCommand$1=RemoveElementCommand,ChangeElementCommand$1=ChangeElementCommand,BatchCommand$1=BatchCommand,UndoManager$1=UndoManager,HistoryEventTypes$1=HistoryEventTypes;window.console||(window.console={},window.console.log=function(e){},window.console.dir=function(e){}),window.opera&&(window.console.log=function(e){window.opera.postError(e)},window.console.dir=function(e){});var SvgCanvas=function e(t,n){_classCallCheck(this,e);var r={show_outside_canvas:!0,selectNew:!0,dimensions:[640,480]};n&&$$9.extend(r,n);var a=r.dimensions,i=this,s=t.ownerDocument,o=s.importNode(text2xml('<svg id="svgroot" xmlns="'+NS.SVG+'" xlinkns="'+NS.XLINK+'" width="'+a[0]+'" height="'+a[1]+'" x="'+a[0]+'" y="'+a[1]+'" overflow="visible"><defs><filter id="canvashadow" filterUnits="objectBoundingBox"><feGaussianBlur 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i.current_drawing_},d=1,h=null,p={shape:{fill:("none"===r.initFill.color?"":"#")+r.initFill.color,fill_paint:null,fill_opacity:r.initFill.opacity,stroke:"#"+r.initStroke.color,stroke_paint:null,stroke_opacity:r.initStroke.opacity,stroke_width:r.initStroke.width,stroke_dasharray:"none",stroke_linejoin:"miter",stroke_linecap:"butt",opacity:r.initOpacity}};p.text=$$9.extend(!0,{},p.shape),$$9.extend(p.text,{fill:"#000000",stroke_width:r.text&&r.text.stroke_width,font_size:r.text&&r.text.font_size,font_family:r.text&&r.text.font_family});var g=p.shape,f=[],m=this.getJsonFromSvgElement=function(e){if(3===e.nodeType)return e.nodeValue;for(var t,n={element:e.tagName,attr:{},children:[]},r=0;t=e.attributes[r];r++)n.attr[t.name]=t.value;for(var a,i=0;a=e.childNodes[i];i++)n.children[i]=m(a);return n},v=this.addSVGElementFromJson=function(e){if("string"==typeof e)return s.createTextNode(e);var t=getElem(e.attr.id),n=u().getCurrentLayer();if(t&&e.element!==t.tagName&&(t.remove(),t=null),!t){var r=e.namespace||NS.SVG;t=s.createElementNS(r,e.element),n&&(h||n).append(t)}return e.curStyles&&assignAttributes(t,{fill:g.fill,stroke:g.stroke,"stroke-width":g.stroke_width,"stroke-dasharray":g.stroke_dasharray,"stroke-linejoin":g.stroke_linejoin,"stroke-linecap":g.stroke_linecap,"stroke-opacity":g.stroke_opacity,"fill-opacity":g.fill_opacity,opacity:g.opacity/2,style:"pointer-events:inherit"},100),assignAttributes(t,e.attr,100),cleanupElement(t),e.children&&e.children.forEach(function(e){t.append(v(e))}),t};i.getTransformList=getTransformList,i.matrixMultiply=matrixMultiply,i.hasMatrixTransform=hasMatrixTransform,i.transformListToTransform=transformListToTransform;var _=function(){return r.baseUnit};init({getBaseUnit:_,getElement:getElem,getHeight:function(){return l.getAttribute("height")/d},getWidth:function(){return l.getAttribute("width")/d},getRoundDigits:function(){return H.round_digits}}),i.convertToNum=convertToNum;var b=function(){return 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n=HistoryEventTypes$1;if(e===n.BEFORE_UNAPPLY||e===n.BEFORE_APPLY)i.clearSelection();else if(e===n.AFTER_APPLY||e===n.AFTER_UNAPPLY){var r=t.elements();i.pathActions.clear(),G("changed",r);var a=t.type(),s=e===n.AFTER_APPLY;if(a===MoveElementCommand$1.type())(s?t.newParent:t.oldParent)===l&&identifyLayers();else if(a===InsertElementCommand$1.type()||a===RemoveElementCommand$1.type())t.parent===l&&identifyLayers(),a===InsertElementCommand$1.type()?s&&D(t.elem):s||D(t.elem),"use"===t.elem.tagName&&Re(t.elem);else if(a===ChangeElementCommand$1.type()){"title"===t.elem.tagName&&t.elem.parentNode.parentNode===l&&identifyLayers();var o=s?t.newValues:t.oldValues;o.stdDeviation&&i.setBlurOffsets(t.elem.parentNode,o.stdDeviation)}}}}),k=function(e){i.undoMgr.addCommandToHistory(e)},A=this.getZoom=function(){return d},E=this.round=function(e){return parseInt(e*d)/d};init$6(r,{createSVGElement:function(e){return i.addSVGElementFromJson(e)},svgRoot:function(){return o},svgContent:function(){return l},getCurrentZoom:A});var N=this.selectorManager=getSelectorManager(),T=i.getNextId=function(){return u().getNextId()},P=i.getId=function(){return u().getId()},G=function(e,t){if(ce[e])return ce[e](window,t)},L=this.clearSelection=function(e){f.forEach(function(e){isNullish(e)||N.releaseSelector(e)}),f=[],e||G("selected",f)},I=this.addToSelection=function(e,t){if(e.length){for(var n=0;n<f.length&&!isNullish(f[n]);)++n;for(var r=e.length;r--;){var a=e[r];if(a){var i=getBBox(a);if(i&&("a"===a.tagName&&1===a.childNodes.length&&(a=a.firstChild),!f.includes(a))){f[n]=a,n++;var s=N.requestSelector(a,i);f.length>1&&s.showGrips(!1)}}}for(G("selected",f),t||1===f.length?N.requestSelector(f[0]).showGrips(!0):N.requestSelector(f[0]).showGrips(!1),f.sort(function(e,t){return e&&t&&e.compareDocumentPosition?3-(6&t.compareDocumentPosition(e)):isNullish(e)?1:0});isNullish(f[0]);)f.shift(0)}},M=function(){return g.opacity},R=this.getMouseTarget=function(e){if(isNullish(e))return null;var n=e.target;if(n.correspondingUseElement&&(n=n.correspondingUseElement),[NS.MATH,NS.HTML].includes(n.namespaceURI)&&"svgcanvas"!==n.id)for(;"foreignObject"!==n.nodeName;)if(!(n=n.parentNode))return o;var r=u().getCurrentLayer();if([o,t,l,r].includes(n))return o;if($$9(n).closest("#selectorParentGroup").length)return N.selectorParentGroup;for(;n.parentNode!==(h||r);)n=n.parentNode;return n};i.pathActions=x,init$1({selectorManager:N,canvas:i,call:G,resetD:function(e){e.setAttribute("d",x.convertPath(e))},round:E,clearSelection:L,addToSelection:I,addCommandToHistory:k,remapElement:remapElement,addSVGElementFromJson:v,getGridSnapping:S,getOpacity:M,getSelectedElements:y,getContainer:function(){return t},setStarted:function(e){Q=e},getRubberBox:function(){return ne},setRubberBox:function(e){return ne=e},addPtsToSelection:function(e){var t=e.closedSubpath,n=e.grips;x.canDeleteNodes=!0,x.closed_subpath=t,G("pointsAdded",{closedSubpath:t,grips:n}),G("selected",n)},endChanges:function(e){var t=e.cmd,n=e.elem;k(t),G("changed",[n])},getCurrentZoom:A,getId:P,getNextId:T,getMouseTarget:R,getCurrentMode:function(){return Z},setCurrentMode:function(e){return Z=e},getDrawnPath:function(){return Te},setDrawnPath:function(e){return Te=e},getSVGRoot:C});var O={},B="a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use",V=["clip-path","fill","filter","marker-end","marker-mid","marker-start","mask","stroke"],j=$$9.data,F=document.createElementNS(NS.SVG,"animate");$$9(F).attr({attributeName:"opacity",begin:"indefinite",dur:1,fill:"freeze"}).appendTo(o);var D=function e(t){var n=$$9(t).attr(V);Object.values(n).forEach(function(e){if(e&&e.startsWith("url(")){var t=getUrlFromAttr(e).substr(1);getElem(t)||(findDefs().append(Y[t]),delete Y[t])}});var r=t.getElementsByTagName("*");if(r.length)for(var a=0,i=r.length;a<i;a++)e(r[a])},U={},H={round_digits:5},z={},q=p.text,W={},Y={},X=r.imgPath+"logo.png",Q=!1,K=null,Z="select",J="none",ee=g,te=null,ne=null,re=[],ae=null;this.runExtension=function(e,t,n){return this.runExtensions(t,n,!1,function(t){return t===e})};var ie=this.runExtensions=function(e,t,n,r){var a=!!n&&[];return $$9.each(W,function(i,s){r&&!r(i)||s&&e in s&&("function"==typeof t&&(t=t(i)),n?a.push(s[e](t)):a=s[e](t))}),a};this.addExtension=function(){var e=_asyncToGenerator(regeneratorRuntime.mark(function e(t,n,r){var a,s;return regeneratorRuntime.wrap(function(e){for(;;)switch(e.prev=e.next){case 0:if("function"==typeof n){e.next=2;break}throw new TypeError("Function argument expected for `svgcanvas.addExtension`");case 2:if(!(t in W)){e.next=4;break}throw new Error('Cannot add extension "'+t+'", an extension by that name already exists.');case 4:return a=$$9.extend(i.getPrivateMethods(),{$:$$9,importLocale:r,svgroot:o,svgcontent:l,nonce:u().getNonce(),selectorManager:N}),e.next=7,n(a);case 7:return(s=e.sent)&&(s.name=t),W[t]=s,e.abrupt("return",G("extension_added",s));case 11:case"end":return e.stop()}},e,this)}));return function(t,n,r){return e.apply(this,arguments)}}();var se=this.getIntersectionList=function(e){if(isNullish(ne))return null;var t,n=h||u().getCurrentLayer();if(e)(t=l.createSVGRect()).x=e.x,t.y=e.y,t.width=e.width,t.height=e.height;else{t=ne.getBBox();var r=l.createSVGRect();["x","y","width","height","top","right","bottom","left"].forEach(function(e){r[e]=t[e]/d}),t=r}var a=null;if(isIE||"function"==typeof o.getIntersectionList&&(t.x+=parseInt(l.getAttribute("x")),t.y+=parseInt(l.getAttribute("y")),a=o.getIntersectionList(t,n)),isNullish(a)||"function"!=typeof a.item){a=[],re.length||(re=oe(n));for(var i=re.length;i--;)t.width&&rectsIntersect(t,re[i].bbox)&&a.push(re[i].elem)}return a};this.getStrokedBBox=getStrokedBBoxDefaultVisible,this.getVisibleElements=getVisibleElements;var oe=this.getVisibleElementsAndBBoxes=function(e){e||(e=$$9(l).children());var t=[];return $$9(e).children().each(function(e,n){n.getBBox&&t.push({elem:n,bbox:getStrokedBBoxDefaultVisible([n])})}),t.reverse()},le=this.groupSvgElem=function(e){var t=document.createElementNS(NS.SVG,"g");e.replaceWith(t),$$9(t).append(e).data("gsvg",e)[0].id=T()},ce={};i.call=G,i.bind=function(e,t){var n=ce[e];return ce[e]=t,n},this.prepareSvg=function(e){this.sanitizeSvg(e.documentElement),_toConsumableArray(e.getElementsByTagNameNS(NS.SVG,"path")).forEach(function(e){e.setAttribute("d",x.convertPath(e)),x.fixEnd(e)})};var ue=function(e){if(!isGecko())return e;var t=e.cloneNode(!0);return e.before(t),e.remove(),N.releaseSelector(e),f[0]=t,N.requestSelector(t).showGrips(!0),t};this.setRotationAngle=function(e,t){e=parseFloat(e);var 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t.x=1/6*((n.x*l[0][0]+r.x*l[0][1]+a.x*l[0][2]+i.x*l[0][3])*o+(n.x*l[1][0]+r.x*l[1][1]+a.x*l[1][2]+i.x*l[1][3])*s+(n.x*l[2][0]+r.x*l[2][1]+a.x*l[2][2]+i.x*l[2][3])*e+(n.x*l[3][0]+r.x*l[3][1]+a.x*l[3][2]+i.x*l[3][3])),t.y=1/6*((n.y*l[0][0]+r.y*l[0][1]+a.y*l[0][2]+i.y*l[0][3])*o+(n.y*l[1][0]+r.y*l[1][1]+a.y*l[1][2]+i.y*l[1][3])*s+(n.y*l[2][0]+r.y*l[2][1]+a.y*l[2][2]+i.y*l[2][3])*e+(n.y*l[3][0]+r.y*l[3][1]+a.y*l[3][2]+i.y*l[3][3])),{x:t.x,y:t.y}},$$9(t).mousedown(function(e){if(!i.spaceKey&&1!==e.button){var t=2===e.button;e.altKey&&i.cloneSelectedElements(0,0),pe=$$9("#svgcontent g")[0].getScreenCTM().inverse();var n=transformPoint(e.pageX,e.pageY,pe),a=n.x*d,s=n.y*d;e.preventDefault(),t&&(Z="select",ae=n);var l=a/d,c=s/d,u=R(e);"a"===u.tagName&&1===u.childNodes.length&&(u=u.firstChild);var h=l;be=ve=l;var p=c;if(ye=_e=c,r.gridSnapping&&(l=snapToGrid(l),c=snapToGrid(c),ve=snapToGrid(ve),_e=snapToGrid(_e)),u===N.selectorParentGroup&&!isNullish(f[0])){var 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svgCanvas.addExtension.call(this,e,t,n)},editor.ready(function(){injectExtendedContextMenuItemsIntoDom()});var extensionsAdded=!1,messageQueue=[],messageListener=function(e){var t={data:e.data,origin:e.origin};extensionsAdded?svgCanvas.call("message",t):messageQueue.push(t)};window.addEventListener("message",messageListener),_asyncToGenerator(regeneratorRuntime.mark(function e(){return regeneratorRuntime.wrap(function(e){for(;;)switch(e.prev=e.next){case 0:return e.prev=0,e.next=3,Promise.resolve();case 3:editor.init(),e.next=9;break;case 6:e.prev=6,e.t0=e.catch(0),console.error(e.t0);case 9:case"end":return e.stop()}},e,this,[[0,6]])}))();export default editor;
 //# sourceMappingURL=index-es.min.js.map
diff --git a/dist/index-es.min.js.map b/dist/index-es.min.js.map
index 8f2972af..63717b7f 100644
--- a/dist/index-es.min.js.map
+++ b/dist/index-es.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"index-es.min.js","sources":["../editor/touch.js","../editor/namespaces.js","../editor/svgpathseg.js","../editor/browser.js","../editor/jQuery.attr.js","../editor/svgtransformlist.js","../editor/units.js","../editor/history.js","../editor/path.js","../editor/math.js","../editor/utilities.js","../editor/contextmenu.js","../editor/external/dynamic-import-polyfill/importModule.js","../editor/layer.js","../editor/historyrecording.js","../editor/draw.js","../editor/sanitize.js","../editor/recalculate.js","../editor/select.js","../editor/coords.js","../editor/svgcanvas.js","../editor/js-hotkeys/jquery.hotkeys.min.js","../editor/jquerybbq/jquery.bbq.min.js","../editor/svgicons/jQuery.svgIcons.js","../editor/jgraduate/jQuery.jGraduate.js","../editor/spinbtn/jQuery.SpinButton.js","../editor/contextmenu/jQuery.contextMenu.js","../editor/jgraduate/jQuery.jPicker.js","../editor/locale/locale.js","../editor/external/load-stylesheets/index-es.js","../editor/svg-editor.js"],"sourcesContent":["// http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/\nfunction touchHandler (ev) {\n  const {changedTouches} = ev,\n    first = changedTouches[0];\n\n  let type = '';\n  switch (ev.type) {\n  case 'touchstart': type = 'mousedown'; break;\n  case 'touchmove': type = 'mousemove'; break;\n  case 'touchend': type = 'mouseup'; break;\n  default: return;\n  }\n\n  const {screenX, screenY, clientX, clientY} = first;\n  const simulatedEvent = new MouseEvent(type, {\n    // Event interface\n    bubbles: true,\n    cancelable: true,\n    // UIEvent interface\n    view: window,\n    detail: 1, // click count\n    // MouseEvent interface (customized)\n    screenX, screenY, clientX, clientY,\n    // MouseEvent interface (defaults) - these could be removed\n    ctrlKey: false,\n    altKey: false,\n    shiftKey: false,\n    metaKey: false,\n    button: 0, // main button (usually left)\n    relatedTarget: null\n  });\n  if (changedTouches.length < 2) {\n    first.target.dispatchEvent(simulatedEvent);\n    ev.preventDefault();\n  }\n}\n\ndocument.addEventListener('touchstart', touchHandler, true);\ndocument.addEventListener('touchmove', touchHandler, true);\ndocument.addEventListener('touchend', touchHandler, true);\ndocument.addEventListener('touchcancel', touchHandler, true);\n","/**\n * Namespaces or tools therefor\n * @module namespaces\n * @license MIT\n*/\n\n/**\n* Common namepaces constants in alpha order\n* @enum {string}\n* @type {PlainObject}\n* @memberof module:namespaces\n*/\nexport const NS = {\n  HTML: 'http://www.w3.org/1999/xhtml',\n  MATH: 'http://www.w3.org/1998/Math/MathML',\n  SE: 'http://svg-edit.googlecode.com',\n  SVG: 'http://www.w3.org/2000/svg',\n  XLINK: 'http://www.w3.org/1999/xlink',\n  XML: 'http://www.w3.org/XML/1998/namespace',\n  XMLNS: 'http://www.w3.org/2000/xmlns/' // see http://www.w3.org/TR/REC-xml-names/#xmlReserved\n};\n\n/**\n* @function module:namespaces.getReverseNS\n* @returns {string} The NS with key values switched and lowercase\n*/\nexport const getReverseNS = function () {\n  const reverseNS = {};\n  Object.entries(NS).forEach(([name, URI]) => {\n    reverseNS[URI] = name.toLowerCase();\n  });\n  return reverseNS;\n};\n","/* globals SVGPathSeg, SVGPathSegMovetoRel, SVGPathSegMovetoAbs,\n    SVGPathSegMovetoRel, SVGPathSegLinetoRel, SVGPathSegLinetoAbs,\n    SVGPathSegLinetoHorizontalRel, SVGPathSegLinetoHorizontalAbs,\n    SVGPathSegLinetoVerticalRel, SVGPathSegLinetoVerticalAbs,\n    SVGPathSegClosePath, SVGPathSegCurvetoCubicRel,\n    SVGPathSegCurvetoCubicAbs, SVGPathSegCurvetoCubicSmoothRel,\n    SVGPathSegCurvetoCubicSmoothAbs, SVGPathSegCurvetoQuadraticRel,\n    SVGPathSegCurvetoQuadraticAbs, SVGPathSegCurvetoQuadraticSmoothRel,\n    SVGPathSegCurvetoQuadraticSmoothAbs, SVGPathSegArcRel, SVGPathSegArcAbs */\n/**\n* SVGPathSeg API polyfill\n* https://github.com/progers/pathseg\n*\n* This is a drop-in replacement for the `SVGPathSeg` and `SVGPathSegList` APIs\n* that were removed from SVG2 ({@link https://lists.w3.org/Archives/Public/www-svg/2015Jun/0044.html}),\n* including the latest spec changes which were implemented in Firefox 43 and\n* Chrome 46.\n*/\n(() => {\nif (!('SVGPathSeg' in window)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg\n  class SVGPathSeg {\n    constructor (type, typeAsLetter, owningPathSegList) {\n      this.pathSegType = type;\n      this.pathSegTypeAsLetter = typeAsLetter;\n      this._owningPathSegList = owningPathSegList;\n    }\n    // Notify owning PathSegList on any changes so they can be synchronized back to the path element.\n    _segmentChanged () {\n      if (this._owningPathSegList) {\n        this._owningPathSegList.segmentChanged(this);\n      }\n    }\n  }\n  SVGPathSeg.prototype.classname = 'SVGPathSeg';\n\n  SVGPathSeg.PATHSEG_UNKNOWN = 0;\n  SVGPathSeg.PATHSEG_CLOSEPATH = 1;\n  SVGPathSeg.PATHSEG_MOVETO_ABS = 2;\n  SVGPathSeg.PATHSEG_MOVETO_REL = 3;\n  SVGPathSeg.PATHSEG_LINETO_ABS = 4;\n  SVGPathSeg.PATHSEG_LINETO_REL = 5;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS = 6;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL = 7;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS = 8;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL = 9;\n  SVGPathSeg.PATHSEG_ARC_ABS = 10;\n  SVGPathSeg.PATHSEG_ARC_REL = 11;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS = 12;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL = 13;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS = 14;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL = 15;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;\n\n  class SVGPathSegClosePath extends SVGPathSeg {\n    constructor (owningPathSegList) {\n      super(SVGPathSeg.PATHSEG_CLOSEPATH, 'z', owningPathSegList);\n    }\n    toString () { return '[object SVGPathSegClosePath]'; }\n    _asPathString () { return this.pathSegTypeAsLetter; }\n    clone () { return new SVGPathSegClosePath(undefined); }\n  }\n\n  class SVGPathSegMovetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_ABS, 'M', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoAbs.prototype, {\n    x: {\n      get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true\n    },\n    y: {\n      get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true\n    }\n  });\n\n  class SVGPathSegMovetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_REL, 'm', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_ABS, 'L', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_REL, 'l', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS, 'C', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicAbs(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL, 'c', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicRel(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS, 'Q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticAbs(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL, 'q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticRel(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_ABS, 'A', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcAbs(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_REL, 'a', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcRel(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoHorizontalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS, 'H', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalAbs(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalAbs.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoHorizontalRel extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL, 'h', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalRel(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalRel.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS, 'V', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalAbs(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalAbs.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalRel extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL, 'v', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalRel(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalRel.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegCurvetoCubicSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS, 'S', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL, 's', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothRel(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS, 'T', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL, 't', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  // Add createSVGPathSeg* functions to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathElement.\n  SVGPathElement.prototype.createSVGPathSegClosePath = function () { return new SVGPathSegClosePath(undefined); };\n  SVGPathElement.prototype.createSVGPathSegMovetoAbs = function (x, y) { return new SVGPathSegMovetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegMovetoRel = function (x, y) { return new SVGPathSegMovetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoAbs = function (x, y) { return new SVGPathSegLinetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoRel = function (x, y) { return new SVGPathSegLinetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicAbs(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicRel(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticAbs(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticRel(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegArcAbs = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcAbs(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegArcRel = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcRel(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs = function (x) { return new SVGPathSegLinetoHorizontalAbs(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel = function (x) { return new SVGPathSegLinetoHorizontalRel(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs = function (y) { return new SVGPathSegLinetoVerticalAbs(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel = function (y) { return new SVGPathSegLinetoVerticalRel(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothRel(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, x, y); };\n\n  if (!('getPathSegAtLength' in SVGPathElement.prototype)) {\n    // Add getPathSegAtLength to SVGPathElement.\n    // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-__svg__SVGPathElement__getPathSegAtLength\n    // This polyfill requires SVGPathElement.getTotalLength to implement the distance-along-a-path algorithm.\n    SVGPathElement.prototype.getPathSegAtLength = function (distance) {\n      if (distance === undefined || !isFinite(distance)) {\n        throw new Error('Invalid arguments.');\n      }\n\n      const measurementElement = document.createElementNS('http://www.w3.org/2000/svg', 'path');\n      measurementElement.setAttribute('d', this.getAttribute('d'));\n      let lastPathSegment = measurementElement.pathSegList.numberOfItems - 1;\n\n      // If the path is empty, return 0.\n      if (lastPathSegment <= 0) {\n        return 0;\n      }\n\n      do {\n        measurementElement.pathSegList.removeItem(lastPathSegment);\n        if (distance > measurementElement.getTotalLength()) {\n          break;\n        }\n        lastPathSegment--;\n      } while (lastPathSegment > 0);\n      return lastPathSegment;\n    };\n  }\n\n  window.SVGPathSeg = SVGPathSeg;\n  window.SVGPathSegClosePath = SVGPathSegClosePath;\n  window.SVGPathSegMovetoAbs = SVGPathSegMovetoAbs;\n  window.SVGPathSegMovetoRel = SVGPathSegMovetoRel;\n  window.SVGPathSegLinetoAbs = SVGPathSegLinetoAbs;\n  window.SVGPathSegLinetoRel = SVGPathSegLinetoRel;\n  window.SVGPathSegCurvetoCubicAbs = SVGPathSegCurvetoCubicAbs;\n  window.SVGPathSegCurvetoCubicRel = SVGPathSegCurvetoCubicRel;\n  window.SVGPathSegCurvetoQuadraticAbs = SVGPathSegCurvetoQuadraticAbs;\n  window.SVGPathSegCurvetoQuadraticRel = SVGPathSegCurvetoQuadraticRel;\n  window.SVGPathSegArcAbs = SVGPathSegArcAbs;\n  window.SVGPathSegArcRel = SVGPathSegArcRel;\n  window.SVGPathSegLinetoHorizontalAbs = SVGPathSegLinetoHorizontalAbs;\n  window.SVGPathSegLinetoHorizontalRel = SVGPathSegLinetoHorizontalRel;\n  window.SVGPathSegLinetoVerticalAbs = SVGPathSegLinetoVerticalAbs;\n  window.SVGPathSegLinetoVerticalRel = SVGPathSegLinetoVerticalRel;\n  window.SVGPathSegCurvetoCubicSmoothAbs = SVGPathSegCurvetoCubicSmoothAbs;\n  window.SVGPathSegCurvetoCubicSmoothRel = SVGPathSegCurvetoCubicSmoothRel;\n  window.SVGPathSegCurvetoQuadraticSmoothAbs = SVGPathSegCurvetoQuadraticSmoothAbs;\n  window.SVGPathSegCurvetoQuadraticSmoothRel = SVGPathSegCurvetoQuadraticSmoothRel;\n}\n\n// Checking for SVGPathSegList in window checks for the case of an implementation without the\n// SVGPathSegList API.\n// The second check for appendItem is specific to Firefox 59+ which removed only parts of the\n// SVGPathSegList API (e.g., appendItem). In this case we need to re-implement the entire API\n// so the polyfill data (i.e., _list) is used throughout.\nif (!('SVGPathSegList' in window) || !('appendItem' in window.SVGPathSegList.prototype)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSegList\n  class SVGPathSegList {\n    constructor (pathElement) {\n      this._pathElement = pathElement;\n      this._list = this._parsePath(this._pathElement.getAttribute('d'));\n\n      // Use a MutationObserver to catch changes to the path's \"d\" attribute.\n      this._mutationObserverConfig = {attributes: true, attributeFilter: ['d']};\n      this._pathElementMutationObserver = new MutationObserver(this._updateListFromPathMutations.bind(this));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n    // Process any pending mutations to the path element and update the list as needed.\n    // This should be the first call of all public functions and is needed because\n    // MutationObservers are not synchronous so we can have pending asynchronous mutations.\n    _checkPathSynchronizedToList () {\n      this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords());\n    }\n\n    _updateListFromPathMutations (mutationRecords) {\n      if (!this._pathElement) {\n        return;\n      }\n      let hasPathMutations = false;\n      mutationRecords.forEach((record) => {\n        if (record.attributeName === 'd') {\n          hasPathMutations = true;\n        }\n      });\n      if (hasPathMutations) {\n        this._list = this._parsePath(this._pathElement.getAttribute('d'));\n      }\n    }\n\n    // Serialize the list and update the path's 'd' attribute.\n    _writeListToPath () {\n      this._pathElementMutationObserver.disconnect();\n      this._pathElement.setAttribute('d', SVGPathSegList._pathSegArrayAsString(this._list));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n\n    // When a path segment changes the list needs to be synchronized back to the path element.\n    segmentChanged (pathSeg) {\n      this._writeListToPath();\n    }\n\n    clear () {\n      this._checkPathSynchronizedToList();\n\n      this._list.forEach((pathSeg) => {\n        pathSeg._owningPathSegList = null;\n      });\n      this._list = [];\n      this._writeListToPath();\n    }\n\n    initialize (newItem) {\n      this._checkPathSynchronizedToList();\n\n      this._list = [newItem];\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    _checkValidIndex (index) {\n      if (isNaN(index) || index < 0 || index >= this.numberOfItems) {\n        throw new Error('INDEX_SIZE_ERR');\n      }\n    }\n\n    getItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      return this._list[index];\n    }\n\n    insertItemBefore (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      // Spec: If the index is greater than or equal to numberOfItems, then the new item is appended to the end of the list.\n      if (index > this.numberOfItems) {\n        index = this.numberOfItems;\n      }\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.splice(index, 0, newItem);\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    replaceItem (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._checkValidIndex(index);\n      this._list[index] = newItem;\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    removeItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      const item = this._list[index];\n      this._list.splice(index, 1);\n      this._writeListToPath();\n      return item;\n    }\n\n    appendItem (newItem) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.push(newItem);\n      newItem._owningPathSegList = this;\n      // TODO: Optimize this to just append to the existing attribute.\n      this._writeListToPath();\n      return newItem;\n    }\n\n    // This closely follows SVGPathParser::parsePath from Source/core/svg/SVGPathParser.cpp.\n    _parsePath (string) {\n      if (!string || !string.length) {\n        return [];\n      }\n\n      const owningPathSegList = this;\n\n      class Builder {\n        constructor () {\n          this.pathSegList = [];\n        }\n        appendSegment (pathSeg) {\n          this.pathSegList.push(pathSeg);\n        }\n      }\n\n      class Source {\n        constructor (string) {\n          this._string = string;\n          this._currentIndex = 0;\n          this._endIndex = this._string.length;\n          this._previousCommand = SVGPathSeg.PATHSEG_UNKNOWN;\n\n          this._skipOptionalSpaces();\n        }\n        _isCurrentSpace () {\n          const character = this._string[this._currentIndex];\n          return character <= ' ' && (character === ' ' || character === '\\n' || character === '\\t' || character === '\\r' || character === '\\f');\n        }\n\n        _skipOptionalSpaces () {\n          while (this._currentIndex < this._endIndex && this._isCurrentSpace()) {\n            this._currentIndex++;\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        _skipOptionalSpacesOrDelimiter () {\n          if (this._currentIndex < this._endIndex && !this._isCurrentSpace() && this._string.charAt(this._currentIndex) !== ',') {\n            return false;\n          }\n          if (this._skipOptionalSpaces()) {\n            if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === ',') {\n              this._currentIndex++;\n              this._skipOptionalSpaces();\n            }\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        hasMoreData () {\n          return this._currentIndex < this._endIndex;\n        }\n\n        peekSegmentType () {\n          const lookahead = this._string[this._currentIndex];\n          return this._pathSegTypeFromChar(lookahead);\n        }\n\n        _pathSegTypeFromChar (lookahead) {\n          switch (lookahead) {\n          case 'Z':\n          case 'z':\n            return SVGPathSeg.PATHSEG_CLOSEPATH;\n          case 'M':\n            return SVGPathSeg.PATHSEG_MOVETO_ABS;\n          case 'm':\n            return SVGPathSeg.PATHSEG_MOVETO_REL;\n          case 'L':\n            return SVGPathSeg.PATHSEG_LINETO_ABS;\n          case 'l':\n            return SVGPathSeg.PATHSEG_LINETO_REL;\n          case 'C':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;\n          case 'c':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;\n          case 'Q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;\n          case 'q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;\n          case 'A':\n            return SVGPathSeg.PATHSEG_ARC_ABS;\n          case 'a':\n            return SVGPathSeg.PATHSEG_ARC_REL;\n          case 'H':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;\n          case 'h':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;\n          case 'V':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;\n          case 'v':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;\n          case 'S':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;\n          case 's':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;\n          case 'T':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;\n          case 't':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;\n          default:\n            return SVGPathSeg.PATHSEG_UNKNOWN;\n          }\n        }\n\n        _nextCommandHelper (lookahead, previousCommand) {\n          // Check for remaining coordinates in the current command.\n          if ((lookahead === '+' || lookahead === '-' || lookahead === '.' || (lookahead >= '0' && lookahead <= '9')) && previousCommand !== SVGPathSeg.PATHSEG_CLOSEPATH) {\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_ABS) {\n              return SVGPathSeg.PATHSEG_LINETO_ABS;\n            }\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_REL) {\n              return SVGPathSeg.PATHSEG_LINETO_REL;\n            }\n            return previousCommand;\n          }\n          return SVGPathSeg.PATHSEG_UNKNOWN;\n        }\n\n        initialCommandIsMoveTo () {\n          // If the path is empty it is still valid, so return true.\n          if (!this.hasMoreData()) {\n            return true;\n          }\n          const command = this.peekSegmentType();\n          // Path must start with moveTo.\n          return command === SVGPathSeg.PATHSEG_MOVETO_ABS || command === SVGPathSeg.PATHSEG_MOVETO_REL;\n        }\n\n        // Parse a number from an SVG path. This very closely follows genericParseNumber(...) from Source/core/svg/SVGParserUtilities.cpp.\n        // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-PathDataBNF\n        _parseNumber () {\n          let exponent = 0;\n          let integer = 0;\n          let frac = 1;\n          let decimal = 0;\n          let sign = 1;\n          let expsign = 1;\n\n          const startIndex = this._currentIndex;\n\n          this._skipOptionalSpaces();\n\n          // Read the sign.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '+') {\n            this._currentIndex++;\n          } else if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '-') {\n            this._currentIndex++;\n            sign = -1;\n          }\n\n          if (this._currentIndex === this._endIndex || ((this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') && this._string.charAt(this._currentIndex) !== '.')) {\n            // The first character of a number must be one of [0-9+-.].\n            return undefined;\n          }\n\n          // Read the integer part, build right-to-left.\n          const startIntPartIndex = this._currentIndex;\n          while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n            this._currentIndex++; // Advance to first non-digit.\n          }\n\n          if (this._currentIndex !== startIntPartIndex) {\n            let scanIntPartIndex = this._currentIndex - 1;\n            let multiplier = 1;\n            while (scanIntPartIndex >= startIntPartIndex) {\n              integer += multiplier * (this._string.charAt(scanIntPartIndex--) - '0');\n              multiplier *= 10;\n            }\n          }\n\n          // Read the decimals.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '.') {\n            this._currentIndex++;\n\n            // There must be a least one digit following the .\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              frac *= 10;\n              decimal += (this._string.charAt(this._currentIndex) - '0') / frac;\n              this._currentIndex += 1;\n            }\n          }\n\n          // Read the exponent part.\n          if (this._currentIndex !== startIndex && this._currentIndex + 1 < this._endIndex && (this._string.charAt(this._currentIndex) === 'e' || this._string.charAt(this._currentIndex) === 'E') && (this._string.charAt(this._currentIndex + 1) !== 'x' && this._string.charAt(this._currentIndex + 1) !== 'm')) {\n            this._currentIndex++;\n\n            // Read the sign of the exponent.\n            if (this._string.charAt(this._currentIndex) === '+') {\n              this._currentIndex++;\n            } else if (this._string.charAt(this._currentIndex) === '-') {\n              this._currentIndex++;\n              expsign = -1;\n            }\n\n            // There must be an exponent.\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              exponent *= 10;\n              exponent += (this._string.charAt(this._currentIndex) - '0');\n              this._currentIndex++;\n            }\n          }\n\n          let number = integer + decimal;\n          number *= sign;\n\n          if (exponent) {\n            number *= Math.pow(10, expsign * exponent);\n          }\n\n          if (startIndex === this._currentIndex) {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n\n          return number;\n        }\n\n        _parseArcFlag () {\n          if (this._currentIndex >= this._endIndex) {\n            return undefined;\n          }\n          let flag = false;\n          const flagChar = this._string.charAt(this._currentIndex++);\n          if (flagChar === '0') {\n            flag = false;\n          } else if (flagChar === '1') {\n            flag = true;\n          } else {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n          return flag;\n        }\n\n        parseSegment () {\n          const lookahead = this._string[this._currentIndex];\n          let command = this._pathSegTypeFromChar(lookahead);\n          if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n            // Possibly an implicit command. Not allowed if this is the first command.\n            if (this._previousCommand === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n            command = this._nextCommandHelper(lookahead, this._previousCommand);\n            if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n          } else {\n            this._currentIndex++;\n          }\n\n          this._previousCommand = command;\n\n          switch (command) {\n          case SVGPathSeg.PATHSEG_MOVETO_REL:\n            return new SVGPathSegMovetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_MOVETO_ABS:\n            return new SVGPathSegMovetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_REL:\n            return new SVGPathSegLinetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_ABS:\n            return new SVGPathSegLinetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:\n            return new SVGPathSegLinetoHorizontalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:\n            return new SVGPathSegLinetoHorizontalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:\n            return new SVGPathSegLinetoVerticalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:\n            return new SVGPathSegLinetoVerticalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_CLOSEPATH:\n            this._skipOptionalSpaces();\n            return new SVGPathSegClosePath(owningPathSegList);\n          case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:\n            return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:\n            return new SVGPathSegCurvetoQuadraticSmoothAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_ARC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } case SVGPathSeg.PATHSEG_ARC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } default:\n            throw new Error('Unknown path seg type.');\n          }\n        }\n      }\n\n      const builder = new Builder();\n      const source = new Source(string);\n\n      if (!source.initialCommandIsMoveTo()) {\n        return [];\n      }\n      while (source.hasMoreData()) {\n        const pathSeg = source.parseSegment();\n        if (!pathSeg) {\n          return [];\n        }\n        builder.appendSegment(pathSeg);\n      }\n\n      return builder.pathSegList;\n    }\n  }\n\n  SVGPathSegList.prototype.classname = 'SVGPathSegList';\n\n  Object.defineProperty(SVGPathSegList.prototype, 'numberOfItems', {\n    get () {\n      this._checkPathSynchronizedToList();\n      return this._list.length;\n    },\n    enumerable: true\n  });\n\n  SVGPathSegList._pathSegArrayAsString = function (pathSegArray) {\n    let string = '';\n    let first = true;\n    pathSegArray.forEach((pathSeg) => {\n      if (first) {\n        first = false;\n        string += pathSeg._asPathString();\n      } else {\n        string += ' ' + pathSeg._asPathString();\n      }\n    });\n    return string;\n  };\n\n  // Add the pathSegList accessors to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGAnimatedPathData\n  Object.defineProperties(SVGPathElement.prototype, {\n    pathSegList: {\n      get () {\n        if (!this._pathSegList) {\n          this._pathSegList = new SVGPathSegList(this);\n        }\n        return this._pathSegList;\n      },\n      enumerable: true\n    },\n    // FIXME: The following are not implemented and simply return SVGPathElement.pathSegList.\n    normalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedNormalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true}\n  });\n  window.SVGPathSegList = SVGPathSegList;\n}\n})();\n","/* globals jQuery */\n/**\n * Browser detection\n * @module browser\n * @license MIT\n *\n * @copyright 2010 Jeff Schiller, 2010 Alexis Deveria\n */\n\n// Dependencies:\n// 1) jQuery (for $.alert())\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\n\nconst $ = jQuery;\n\nconst supportsSVG_ = (function () {\nreturn !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;\n}());\n\n/**\n * @function module:browser.supportsSvg\n * @returns {boolean}\n*/\nexport const supportsSvg = () => supportsSVG_;\n\nconst {userAgent} = navigator;\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n// Note: Browser sniffing should only be used if no other detection method is possible\nconst isOpera_ = !!window.opera;\nconst isWebkit_ = userAgent.includes('AppleWebKit');\nconst isGecko_ = userAgent.includes('Gecko/');\nconst isIE_ = userAgent.includes('MSIE');\nconst isChrome_ = userAgent.includes('Chrome/');\nconst isWindows_ = userAgent.includes('Windows');\nconst isMac_ = userAgent.includes('Macintosh');\nconst isTouch_ = 'ontouchstart' in window;\n\nconst supportsSelectors_ = (function () {\nreturn !!svg.querySelector;\n}());\n\nconst supportsXpath_ = (function () {\nreturn !!document.evaluate;\n}());\n\n// segList functions (for FF1.5 and 2.0)\nconst supportsPathReplaceItem_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.replaceItem(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\nconst supportsPathInsertItemBefore_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.insertItemBefore(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\n// text character positioning (for IE9 and now Chrome)\nconst supportsGoodTextCharPos_ = (function () {\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgroot);\nsvgcontent.setAttribute('x', 5);\nsvgroot.append(svgcontent);\nconst text = document.createElementNS(NS.SVG, 'text');\ntext.textContent = 'a';\nsvgcontent.append(text);\ntry { // Chrome now fails here\n  const pos = text.getStartPositionOfChar(0).x;\n  return (pos === 0);\n} catch (err) {\n  return false;\n} finally {\n  svgroot.remove();\n}\n}());\n\nconst supportsPathBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 C0,0 10,10 10,0');\nsvgcontent.append(path);\nconst bbox = path.getBBox();\nsvgcontent.remove();\nreturn (bbox.height > 4 && bbox.height < 5);\n}());\n\n// Support for correct bbox sizing on groups with horizontal/vertical lines\nconst supportsHVLineContainerBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,0');\nconst path2 = document.createElementNS(NS.SVG, 'path');\npath2.setAttribute('d', 'M5,0 15,0');\nconst g = document.createElementNS(NS.SVG, 'g');\ng.append(path, path2);\nsvgcontent.append(g);\nconst bbox = g.getBBox();\nsvgcontent.remove();\n// Webkit gives 0, FF gives 10, Opera (correctly) gives 15\nreturn (bbox.width === 15);\n}());\n\nconst supportsEditableText_ = (function () {\n// TODO: Find better way to check support for this\nreturn isOpera_;\n}());\n\nconst supportsGoodDecimals_ = (function () {\n// Correct decimals on clone attributes (Opera < 10.5/win/non-en)\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('x', 0.1);\nconst crect = rect.cloneNode(false);\nconst retValue = (!crect.getAttribute('x').includes(','));\nif (!retValue) {\n  // Todo: i18nize or remove\n  $.alert('NOTE: This version of Opera is known to contain bugs in SVG-edit.\\n' +\n\t'Please upgrade to the <a href=\"http://opera.com\">latest version</a> in which the problems have been fixed.');\n}\nreturn retValue;\n}());\n\nconst supportsNonScalingStroke_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('style', 'vector-effect:non-scaling-stroke');\nreturn rect.style.vectorEffect === 'non-scaling-stroke';\n}());\n\nlet supportsNativeSVGTransformLists_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nconst rxform = rect.transform.baseVal;\nconst t1 = svg.createSVGTransform();\nrxform.appendItem(t1);\nconst r1 = rxform.getItem(0);\n// Todo: Do frame-independent instance checking\nreturn r1 instanceof SVGTransform && t1 instanceof SVGTransform &&\n\tr1.type === t1.type && r1.angle === t1.angle &&\n\tr1.matrix.a === t1.matrix.a &&\n\tr1.matrix.b === t1.matrix.b &&\n\tr1.matrix.c === t1.matrix.c &&\n\tr1.matrix.d === t1.matrix.d &&\n\tr1.matrix.e === t1.matrix.e &&\n\tr1.matrix.f === t1.matrix.f;\n}());\n\n// Public API\n\n/**\n * @function module:browser.isOpera\n * @returns {boolean}\n*/\nexport const isOpera = () => isOpera_;\n/**\n * @function module:browser.isWebkit\n * @returns {boolean}\n*/\nexport const isWebkit = () => isWebkit_;\n/**\n * @function module:browser.isGecko\n * @returns {boolean}\n*/\nexport const isGecko = () => isGecko_;\n/**\n * @function module:browser.isIE\n * @returns {boolean}\n*/\nexport const isIE = () => isIE_;\n/**\n * @function module:browser.isChrome\n * @returns {boolean}\n*/\nexport const isChrome = () => isChrome_;\n/**\n * @function module:browser.isWindows\n * @returns {boolean}\n*/\nexport const isWindows = () => isWindows_;\n/**\n * @function module:browser.isMac\n * @returns {boolean}\n*/\nexport const isMac = () => isMac_;\n/**\n * @function module:browser.isTouch\n * @returns {boolean}\n*/\nexport const isTouch = () => isTouch_;\n\n/**\n * @function module:browser.supportsSelectors\n * @returns {boolean}\n*/\nexport const supportsSelectors = () => supportsSelectors_;\n\n/**\n * @function module:browser.supportsXpath\n * @returns {boolean}\n*/\nexport const supportsXpath = () => supportsXpath_;\n\n/**\n * @function module:browser.supportsPathReplaceItem\n * @returns {boolean}\n*/\nexport const supportsPathReplaceItem = () => supportsPathReplaceItem_;\n\n/**\n * @function module:browser.supportsPathInsertItemBefore\n * @returns {boolean}\n*/\nexport const supportsPathInsertItemBefore = () => supportsPathInsertItemBefore_;\n\n/**\n * @function module:browser.supportsPathBBox\n * @returns {boolean}\n*/\nexport const supportsPathBBox = () => supportsPathBBox_;\n\n/**\n * @function module:browser.supportsHVLineContainerBBox\n * @returns {boolean}\n*/\nexport const supportsHVLineContainerBBox = () => supportsHVLineContainerBBox_;\n\n/**\n * @function module:browser.supportsGoodTextCharPos\n * @returns {boolean}\n*/\nexport const supportsGoodTextCharPos = () => supportsGoodTextCharPos_;\n\n/**\n* @function module:browser.supportsEditableText\n * @returns {boolean}\n*/\nexport const supportsEditableText = () => supportsEditableText_;\n\n/**\n * @function module:browser.supportsGoodDecimals\n * @returns {boolean}\n*/\nexport const supportsGoodDecimals = () => supportsGoodDecimals_;\n\n/**\n* @function module:browser.supportsNonScalingStroke\n* @returns {boolean}\n*/\nexport const supportsNonScalingStroke = () => supportsNonScalingStroke_;\n\n/**\n* @function module:browser.supportsNativeTransformLists\n* @returns {boolean}\n*/\nexport const supportsNativeTransformLists = () => supportsNativeSVGTransformLists_;\n\n/**\n * Set `supportsNativeSVGTransformLists_` to `false` (for unit testing).\n * @function module:browser.disableSupportsNativeTransformLists\n * @returns {undefined}\n*/\nexport const disableSupportsNativeTransformLists = () => {\n  supportsNativeSVGTransformLists_ = false;\n};\n","/**\n * jQuery module to work with SVG attributes\n * @module jQueryAttr\n * @license MIT\n */\n\n/**\n* This fixes `$(...).attr()` to work as expected with SVG elements.\n* Does not currently use `*AttributeNS()` since we rarely need that.\n* Adds {@link external:jQuery.fn.attr}.\n* See {@link https://api.jquery.com/attr/} for basic documentation of `.attr()`.\n*\n* Additional functionality:\n* - When getting attributes, a string that's a number is returned as type number.\n* - If an array is supplied as the first parameter, multiple values are returned\n*    as an object with values for each given attribute.\n* @function module:jQueryAttr.jQueryAttr\n* @param {external:jQuery} $ The jQuery object to which to add the plug-in\n* @returns {external:jQuery}\n*/\nexport default function ($) {\n  const proxied = $.fn.attr,\n    svgns = 'http://www.w3.org/2000/svg';\n  /**\n  * @typedef {PlainObject.<string, string|Float>} module:jQueryAttr.Attributes\n  */\n  /**\n  * @function external:jQuery.fn.attr\n  * @param {string|string[]|PlainObject.<string, string>} key\n  * @param {string} value\n  * @returns {external:jQuery|module:jQueryAttr.Attributes}\n  */\n  $.fn.attr = function (key, value) {\n    const len = this.length;\n    if (!len) { return proxied.apply(this, arguments); }\n    for (let i = 0; i < len; ++i) {\n      const elem = this[i];\n      // set/get SVG attribute\n      if (elem.namespaceURI === svgns) {\n        // Setting attribute\n        if (value !== undefined) {\n          elem.setAttribute(key, value);\n        } else if (Array.isArray(key)) {\n          // Getting attributes from array\n          const obj = {};\n          let j = key.length;\n\n          while (j--) {\n            const aname = key[j];\n            let attr = elem.getAttribute(aname);\n            // This returns a number when appropriate\n            if (attr || attr === '0') {\n              attr = isNaN(attr) ? attr : (attr - 0);\n            }\n            obj[aname] = attr;\n          }\n          return obj;\n        }\n        if (typeof key === 'object') {\n          // Setting attributes from object\n          for (const [name, val] of Object.entries(key)) {\n            elem.setAttribute(name, val);\n          }\n        // Getting attribute\n        } else {\n          let attr = elem.getAttribute(key);\n          if (attr || attr === '0') {\n            attr = isNaN(attr) ? attr : (attr - 0);\n          }\n          return attr;\n        }\n      } else {\n        return proxied.apply(this, arguments);\n      }\n    }\n    return this;\n  };\n  return $;\n}\n","/**\n * Partial polyfill of `SVGTransformList`\n * @module SVGTransformList\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\nimport {supportsNativeTransformLists} from './browser.js';\n\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\n\n// Helper function.\nfunction transformToString (xform) {\n  const m = xform.matrix;\n  let text = '';\n  switch (xform.type) {\n  case 1: // MATRIX\n    text = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n    break;\n  case 2: // TRANSLATE\n    text = 'translate(' + m.e + ',' + m.f + ')';\n    break;\n  case 3: // SCALE\n    if (m.a === m.d) {\n      text = 'scale(' + m.a + ')';\n    } else {\n      text = 'scale(' + m.a + ',' + m.d + ')';\n    }\n    break;\n  case 4: { // ROTATE\n    let cx = 0;\n    let cy = 0;\n    // this prevents divide by zero\n    if (xform.angle !== 0) {\n      const K = 1 - m.a;\n      cy = (K * m.f + m.b * m.e) / (K * K + m.b * m.b);\n      cx = (m.e - m.b * cy) / K;\n    }\n    text = 'rotate(' + xform.angle + ' ' + cx + ',' + cy + ')';\n    break;\n  }\n  }\n  return text;\n}\n\n/**\n * Map of SVGTransformList objects.\n */\nlet listMap_ = {};\n\n/**\n* @interface module:SVGTransformList.SVGEditTransformList\n* @property {Integer} numberOfItems unsigned long\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#clear\n* @returns {undefined}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#initialize\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#getItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#insertItemBefore\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#replaceItem\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#removeItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#appendItem\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#createSVGTransformFromMatrix\n* @param {SVGMatrix} matrix\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#consolidate\n* @returns {SVGTransform}\n*/\n\n/**\n* SVGTransformList implementation for Webkit.\n* These methods do not currently raise any exceptions.\n* These methods also do not check that transforms are being inserted.  This is basically\n* implementing as much of SVGTransformList that we need to get the job done.\n*/\nexport class SVGTransformList {\n  /**\n  * @param {Element} elem\n  */\n  constructor (elem) {\n    this._elem = elem || null;\n    this._xforms = [];\n    // TODO: how do we capture the undo-ability in the changed transform list?\n    this._update = function () {\n      let tstr = '';\n      // /* const concatMatrix = */ svgroot.createSVGMatrix();\n      for (let i = 0; i < this.numberOfItems; ++i) {\n        const xform = this._list.getItem(i);\n        tstr += transformToString(xform) + ' ';\n      }\n      this._elem.setAttribute('transform', tstr);\n    };\n    this._list = this;\n    this._init = function () {\n      // Transform attribute parser\n      let str = this._elem.getAttribute('transform');\n      if (!str) { return; }\n\n      // TODO: Add skew support in future\n      const re = /\\s*((scale|matrix|rotate|translate)\\s*\\(.*?\\))\\s*,?\\s*/;\n      let m = true;\n      while (m) {\n        m = str.match(re);\n        str = str.replace(re, '');\n        if (m && m[1]) {\n          const x = m[1];\n          const bits = x.split(/\\s*\\(/);\n          const name = bits[0];\n          const valBits = bits[1].match(/\\s*(.*?)\\s*\\)/);\n          valBits[1] = valBits[1].replace(/(\\d)-/g, '$1 -');\n          const valArr = valBits[1].split(/[, ]+/);\n          const letters = 'abcdef'.split('');\n          const mtx = svgroot.createSVGMatrix();\n          Object.values(valArr).forEach(function (item, i) {\n            valArr[i] = parseFloat(item);\n            if (name === 'matrix') {\n              mtx[letters[i]] = valArr[i];\n            }\n          });\n          const xform = svgroot.createSVGTransform();\n          const fname = 'set' + name.charAt(0).toUpperCase() + name.slice(1);\n          const values = name === 'matrix' ? [mtx] : valArr;\n\n          if (name === 'scale' && values.length === 1) {\n            values.push(values[0]);\n          } else if (name === 'translate' && values.length === 1) {\n            values.push(0);\n          } else if (name === 'rotate' && values.length === 1) {\n            values.push(0, 0);\n          }\n          xform[fname].apply(xform, values);\n          this._list.appendItem(xform);\n        }\n      }\n    };\n    this._removeFromOtherLists = function (item) {\n      if (item) {\n        // Check if this transform is already in a transformlist, and\n        // remove it if so.\n        let found = false;\n        for (const id in listMap_) {\n          const tl = listMap_[id];\n          for (let i = 0, len = tl._xforms.length; i < len; ++i) {\n            if (tl._xforms[i] === item) {\n              found = true;\n              tl.removeItem(i);\n              break;\n            }\n          }\n          if (found) {\n            break;\n          }\n        }\n      }\n    };\n\n    this.numberOfItems = 0;\n  }\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    this.numberOfItems = 0;\n    this._xforms = [];\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  initialize (newItem) {\n    this.numberOfItems = 1;\n    this._removeFromOtherLists(newItem);\n    this._xforms = [newItem];\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  getItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      return this._xforms[index];\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  insertItemBefore (newItem, index) {\n    let retValue = null;\n    if (index >= 0) {\n      if (index < this.numberOfItems) {\n        this._removeFromOtherLists(newItem);\n        const newxforms = new Array(this.numberOfItems + 1);\n        // TODO: use array copying and slicing\n        let i;\n        for (i = 0; i < index; ++i) {\n          newxforms[i] = this._xforms[i];\n        }\n        newxforms[i] = newItem;\n        for (let j = i + 1; i < this.numberOfItems; ++j, ++i) {\n          newxforms[j] = this._xforms[i];\n        }\n        this.numberOfItems++;\n        this._xforms = newxforms;\n        retValue = newItem;\n        this._list._update();\n      } else {\n        retValue = this._list.appendItem(newItem);\n      }\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  replaceItem (newItem, index) {\n    let retValue = null;\n    if (index < this.numberOfItems && index >= 0) {\n      this._removeFromOtherLists(newItem);\n      this._xforms[index] = newItem;\n      retValue = newItem;\n      this._list._update();\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  removeItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      const retValue = this._xforms[index];\n      const newxforms = new Array(this.numberOfItems - 1);\n      let i;\n      for (i = 0; i < index; ++i) {\n        newxforms[i] = this._xforms[i];\n      }\n      for (let j = i; j < this.numberOfItems - 1; ++j, ++i) {\n        newxforms[j] = this._xforms[i + 1];\n      }\n      this.numberOfItems--;\n      this._xforms = newxforms;\n      this._list._update();\n      return retValue;\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  appendItem (newItem) {\n    this._removeFromOtherLists(newItem);\n    this._xforms.push(newItem);\n    this.numberOfItems++;\n    this._list._update();\n    return newItem;\n  }\n}\n\n/**\n* @function module:SVGTransformList.resetListMap\n* @returns {undefined}\n*/\nexport const resetListMap = function () {\n  listMap_ = {};\n};\n\n/**\n * Removes transforms of the given element from the map.\n * @function module:SVGTransformList.removeElementFromListMap\n * @param {Element} elem - a DOM Element\n * @returns {undefined}\n */\nexport let removeElementFromListMap = function (elem) {\n  if (elem.id && listMap_[elem.id]) {\n    delete listMap_[elem.id];\n  }\n};\n\n/**\n* Returns an object that behaves like a `SVGTransformList` for the given DOM element.\n* @function module:SVGTransformList.getTransformList\n* @param {Element} elem - DOM element to get a transformlist from\n* @todo The polyfill should have `SVGAnimatedTransformList` and this should use it\n* @returns {SVGAnimatedTransformList|SVGTransformList}\n*/\nexport const getTransformList = function (elem) {\n  if (!supportsNativeTransformLists()) {\n    const id = elem.id || 'temp';\n    let t = listMap_[id];\n    if (!t || id === 'temp') {\n      listMap_[id] = new SVGTransformList(elem);\n      listMap_[id]._init();\n      t = listMap_[id];\n    }\n    return t;\n  }\n  if (elem.transform) {\n    return elem.transform.baseVal;\n  }\n  if (elem.gradientTransform) {\n    return elem.gradientTransform.baseVal;\n  }\n  if (elem.patternTransform) {\n    return elem.patternTransform.baseVal;\n  }\n\n  return null;\n};\n\n/**\n* @callback module:SVGTransformList.removeElementFromListMap\n* @param {Element} elem\n*/\n/**\n* Replace `removeElementFromListMap` for unit-testing.\n* @function module:SVGTransformList.changeRemoveElementFromListMap\n* @param {module:SVGTransformList.removeElementFromListMap} cb Passed a single argument `elem`\n* @returns {undefined}\n*/\nexport const changeRemoveElementFromListMap = function (cb) {\n  removeElementFromListMap = cb;\n};\n","/**\n * Tools for working with units\n * @module units\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\n\nconst wAttrs = ['x', 'x1', 'cx', 'rx', 'width'];\nconst hAttrs = ['y', 'y1', 'cy', 'ry', 'height'];\nconst unitAttrs = ['r', 'radius', ...wAttrs, ...hAttrs];\n// unused\n/*\nconst unitNumMap = {\n  '%': 2,\n  em: 3,\n  ex: 4,\n  px: 5,\n  cm: 6,\n  mm: 7,\n  in: 8,\n  pt: 9,\n  pc: 10\n};\n*/\n// Container of elements.\nlet elementContainer_;\n\n// Stores mapping of unit type to user coordinates.\nlet typeMap_ = {};\n\n/**\n * @interface module:units.ElementContainer\n */\n/**\n * @function module:units.ElementContainer#getBaseUnit\n * @returns {string} The base unit type of the container ('em')\n */\n/**\n * @function module:units.ElementContainer#getElement\n * @returns {Element} An element in the container given an id\n */\n/**\n * @function module:units.ElementContainer#getHeight\n * @returns {Float} The container's height\n */\n/**\n * @function module:units.ElementContainer#getWidth\n * @returns {Float} The container's width\n */\n/**\n * @function module:units.ElementContainer#getRoundDigits\n * @returns {Integer} The number of digits number should be rounded to\n */\n\n/**\n * @typedef {PlainObject} module:units.TypeMap\n * @property {Float} em\n * @property {Float} ex\n * @property {Float} in\n * @property {Float} cm\n * @property {Float} mm\n * @property {Float} pt\n * @property {Float} pc\n * @property {Integer} px\n * @property {0} %\n */\n\n/**\n * Initializes this module.\n *\n * @function module:units.init\n * @param {module:units.ElementContainer} elementContainer - An object implementing the ElementContainer interface.\n * @returns {undefined}\n */\nexport const init = function (elementContainer) {\n  elementContainer_ = elementContainer;\n\n  // Get correct em/ex values by creating a temporary SVG.\n  const svg = document.createElementNS(NS.SVG, 'svg');\n  document.body.append(svg);\n  const rect = document.createElementNS(NS.SVG, 'rect');\n  rect.setAttribute('width', '1em');\n  rect.setAttribute('height', '1ex');\n  rect.setAttribute('x', '1in');\n  svg.append(rect);\n  const bb = rect.getBBox();\n  svg.remove();\n\n  const inch = bb.x;\n  typeMap_ = {\n    em: bb.width,\n    ex: bb.height,\n    in: inch,\n    cm: inch / 2.54,\n    mm: inch / 25.4,\n    pt: inch / 72,\n    pc: inch / 6,\n    px: 1,\n    '%': 0\n  };\n};\n\n/**\n* Group: Unit conversion functions\n*/\n\n/**\n * @function module:units.getTypeMap\n * @returns {module:units.TypeMap} The unit object with values for each unit\n*/\nexport const getTypeMap = function () {\n  return typeMap_;\n};\n\n/**\n* @typedef {GenericArray} module:units.CompareNumbers\n* @property {Integer} length 2\n* @property {Float} 0\n* @property {Float} 1\n*/\n\n/**\n* Rounds a given value to a float with number of digits defined in\n* `round_digits` of `saveOptions`\n*\n* @function module:units.shortFloat\n* @param {string|Float|module:units.CompareNumbers} val - The value (or Array of two numbers) to be rounded\n* @returns {Float|string} If a string/number was given, returns a Float. If an array, return a string\n* with comma-separated floats\n*/\nexport const shortFloat = function (val) {\n  const digits = elementContainer_.getRoundDigits();\n  if (!isNaN(val)) {\n    // Note that + converts to Number\n    return +((+val).toFixed(digits));\n  }\n  if (Array.isArray(val)) {\n    return shortFloat(val[0]) + ',' + shortFloat(val[1]);\n  }\n  return parseFloat(val).toFixed(digits) - 0;\n};\n\n/**\n* Converts the number to given unit or baseUnit.\n* @function module:units.convertUnit\n* @param {string|Float} val\n* @param {\"em\"|\"ex\"|\"in\"|\"cm\"|\"mm\"|\"pt\"|\"pc\"|\"px\"|\"%\"} [unit]\n* @returns {Float}\n*/\nexport const convertUnit = function (val, unit) {\n  unit = unit || elementContainer_.getBaseUnit();\n  // baseVal.convertToSpecifiedUnits(unitNumMap[unit]);\n  // const val = baseVal.valueInSpecifiedUnits;\n  // baseVal.convertToSpecifiedUnits(1);\n  return shortFloat(val / typeMap_[unit]);\n};\n\n/**\n* Sets an element's attribute based on the unit in its current value.\n*\n* @function module:units.setUnitAttr\n* @param {Element} elem - DOM element to be changed\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {undefined}\n*/\nexport const setUnitAttr = function (elem, attr, val) {\n  //  if (!isNaN(val)) {\n  // New value is a number, so check currently used unit\n  // const oldVal = elem.getAttribute(attr);\n\n  // Enable this for alternate mode\n  // if (oldVal !== null && (isNaN(oldVal) || elementContainer_.getBaseUnit() !== 'px')) {\n  //   // Old value was a number, so get unit, then convert\n  //   let unit;\n  //   if (oldVal.substr(-1) === '%') {\n  //     const res = getResolution();\n  //     unit = '%';\n  //     val *= 100;\n  //     if (wAttrs.includes(attr)) {\n  //       val = val / res.w;\n  //     } else if (hAttrs.includes(attr)) {\n  //       val = val / res.h;\n  //     } else {\n  //       return val / Math.sqrt((res.w*res.w) + (res.h*res.h))/Math.sqrt(2);\n  //     }\n  //   } else {\n  //     if (elementContainer_.getBaseUnit() !== 'px') {\n  //       unit = elementContainer_.getBaseUnit();\n  //     } else {\n  //       unit = oldVal.substr(-2);\n  //     }\n  //     val = val / typeMap_[unit];\n  //   }\n  //\n  // val += unit;\n  // }\n  // }\n  elem.setAttribute(attr, val);\n};\n\nconst attrsToConvert = {\n  line: ['x1', 'x2', 'y1', 'y2'],\n  circle: ['cx', 'cy', 'r'],\n  ellipse: ['cx', 'cy', 'rx', 'ry'],\n  foreignObject: ['x', 'y', 'width', 'height'],\n  rect: ['x', 'y', 'width', 'height'],\n  image: ['x', 'y', 'width', 'height'],\n  use: ['x', 'y', 'width', 'height'],\n  text: ['x', 'y']\n};\n\n/**\n* Converts all applicable attributes to the configured baseUnit.\n* @function module:units.convertAttrs\n* @param {Element} element - A DOM element whose attributes should be converted\n* @returns {undefined}\n*/\nexport const convertAttrs = function (element) {\n  const elName = element.tagName;\n  const unit = elementContainer_.getBaseUnit();\n  const attrs = attrsToConvert[elName];\n  if (!attrs) { return; }\n\n  const len = attrs.length;\n  for (let i = 0; i < len; i++) {\n    const attr = attrs[i];\n    const cur = element.getAttribute(attr);\n    if (cur) {\n      if (!isNaN(cur)) {\n        element.setAttribute(attr, (cur / typeMap_[unit]) + unit);\n      }\n      // else {\n      // Convert existing?\n      // }\n    }\n  }\n};\n\n/**\n* Converts given values to numbers. Attributes must be supplied in\n* case a percentage is given.\n*\n* @function module:units.convertToNum\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {Float} The converted number\n*/\nexport const convertToNum = function (attr, val) {\n  // Return a number if that's what it already is\n  if (!isNaN(val)) { return val - 0; }\n  if (val.substr(-1) === '%') {\n    // Deal with percentage, depends on attribute\n    const num = val.substr(0, val.length - 1) / 100;\n    const width = elementContainer_.getWidth();\n    const height = elementContainer_.getHeight();\n\n    if (wAttrs.includes(attr)) {\n      return num * width;\n    }\n    if (hAttrs.includes(attr)) {\n      return num * height;\n    }\n    return num * Math.sqrt((width * width) + (height * height)) / Math.sqrt(2);\n  }\n  const unit = val.substr(-2);\n  const num = val.substr(0, val.length - 2);\n  // Note that this multiplication turns the string into a number\n  return num * typeMap_[unit];\n};\n\n/**\n* Check if an attribute's value is in a valid format.\n* @function module:units.isValidUnit\n* @param {string} attr - The name of the attribute associated with the value\n* @param {string} val - The attribute value to check\n* @param {Element} selectedElement\n* @returns {boolean} Whether the unit is valid\n*/\nexport const isValidUnit = function (attr, val, selectedElement) {\n  if (unitAttrs.includes(attr)) {\n    // True if it's just a number\n    if (!isNaN(val)) {\n      return true;\n    }\n    // Not a number, check if it has a valid unit\n    val = val.toLowerCase();\n    return Object.keys(typeMap_).some((unit) => {\n      const re = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n      return re.test(val);\n    });\n  }\n  if (attr === 'id') {\n    // if we're trying to change the id, make sure it's not already present in the doc\n    // and the id value is valid.\n\n    let result = false;\n    // because getElem() can throw an exception in the case of an invalid id\n    // (according to https://www.w3.org/TR/xml-id/ IDs must be a NCName)\n    // we wrap it in an exception and only return true if the ID was valid and\n    // not already present\n    try {\n      const elem = elementContainer_.getElement(val);\n      result = (elem == null || elem === selectedElement);\n    } catch (e) {}\n    return result;\n  }\n  return true;\n};\n","/**\n * For command history tracking and undo functionality\n * @module history\n * @license MIT\n * @copyright 2010 Jeff Schiller\n */\n\nimport {getHref, setHref, getRotationAngle} from './utilities.js';\nimport {removeElementFromListMap} from './svgtransformlist.js';\n\n/**\n* Group: Undo/Redo history management\n*/\nexport const HistoryEventTypes = {\n  BEFORE_APPLY: 'before_apply',\n  AFTER_APPLY: 'after_apply',\n  BEFORE_UNAPPLY: 'before_unapply',\n  AFTER_UNAPPLY: 'after_unapply'\n};\n\n// const removedElements = {};\n\n/**\n* Base class for commands.\n*/\nclass Command {\n  /**\n  * @returns {string}\n  */\n  getText () {\n    return this.text;\n  }\n}\n\n// Todo: Figure out why the interface members aren't showing\n//   up (with or without modules applied), despite our apparently following\n//   http://usejsdoc.org/tags-interface.html#virtual-comments\n\n/**\n * An interface that all command objects must implement.\n * @interface module:history.HistoryCommand\n*/\n/**\n * Applies\n *\n * @function module:history.HistoryCommand#apply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n *\n * Unapplies\n * @function module:history.HistoryCommand#unapply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n * Returns the elements\n * @function module:history.HistoryCommand#elements\n * @returns {Element[]}\n */\n/**\n * Gets the text\n * @function module:history.HistoryCommand#getText\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand.type\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand#type\n * @returns {string}\n*/\n\n/**\n * @event module:history~Command#event:history\n * @type {module:history.HistoryCommand}\n */\n\n/**\n * An interface for objects that will handle history events.\n * @interface module:history.HistoryEventHandler\n */\n/**\n *\n * @function module:history.HistoryEventHandler#handleHistoryEvent\n * @param {string} eventType One of the HistoryEvent types\n * @param {module:history~Command#event:history} command\n * @listens module:history~Command#event:history\n * @returns {undefined}\n *\n */\n\n/**\n * History command for an element that had its DOM position changed.\n * @implements {module:history.HistoryCommand}\n * @param {Element} elem - The DOM element that was moved\n * @param {Element} oldNextSibling - The element's next sibling before it was moved\n * @param {Element} oldParent - The element's parent before it was moved\n * @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class MoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Move ' + elem.tagName + ' to ' + text) : ('Move ' + elem.tagName);\n    this.oldNextSibling = oldNextSibling;\n    this.oldParent = oldParent;\n    this.newNextSibling = elem.nextSibling;\n    this.newParent = elem.parentNode;\n  }\n  type () {\n    return 'svgedit.history.MoveElementCommand';\n  }\n\n  /**\n   * Re-positions the element.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  apply (handler) {\n    // TODO(codedread): Refactor this common event code into a base HistoryCommand class.\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n   * Positions the element back to its original location.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nMoveElementCommand.type = MoveElementCommand.prototype.type;\n\n/**\n* History command for an element that was added to the DOM.\n* @implements {module:history.HistoryCommand}\n*\n* @param {Element} elem - The newly added DOM element\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class InsertElementCommand extends Command {\n  constructor (elem, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Create ' + elem.tagName);\n    this.parent = elem.parentNode;\n    this.nextSibling = this.elem.nextSibling;\n  }\n\n  type () {\n    return 'svgedit.history.InsertElementCommand';\n  }\n\n  /**\n  * Re-inserts the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.parent.insertBefore(this.elem, this.nextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Removes the element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.parent = this.elem.parentNode;\n    this.elem = this.elem.parentNode.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nInsertElementCommand.type = InsertElementCommand.prototype.type;\n\n/**\n* History command for an element removed from the DOM.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The removed DOM element\n* @param {Node} oldNextSibling - The DOM element's nextSibling when it was in the DOM\n* @param {Element} oldParent - The DOM element's parent\n* @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class RemoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Delete ' + elem.tagName);\n    this.nextSibling = oldNextSibling;\n    this.parent = oldParent;\n\n    // special hack for webkit: remove this element's entry in the svgTransformLists map\n    removeElementFromListMap(elem);\n  }\n  type () {\n    return 'svgedit.history.RemoveElementCommand';\n  }\n\n  /**\n  * Re-removes the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    this.parent = this.elem.parentNode;\n    this.elem = this.parent.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Re-adds the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    if (this.nextSibling == null) {\n      if (window.console) {\n        console.log('Error: reference element was lost');\n      }\n    }\n    this.parent.insertBefore(this.elem, this.nextSibling); // Don't use `before` or `prepend` as `this.nextSibling` may be `null`\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nRemoveElementCommand.type = RemoveElementCommand.prototype.type;\n\n/**\n* @typedef {\"#text\"|\"#href\"|string} module:history.CommandAttributeName\n*/\n/**\n* @typedef {PlainObject.<module:history.CommandAttributeName, string>} module:history.CommandAttributes\n*/\n\n/**\n* History command to make a change to an element.\n* Usually an attribute change, but can also be textcontent.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The DOM element that was changed\n* @param {module:history.CommandAttributes} attrs - Attributes to be changed with the values they had *before* the change\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class ChangeElementCommand extends Command {\n  constructor (elem, attrs, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Change ' + elem.tagName + ' ' + text) : ('Change ' + elem.tagName);\n    this.newValues = {};\n    this.oldValues = attrs;\n    for (const attr in attrs) {\n      if (attr === '#text') {\n        this.newValues[attr] = elem.textContent;\n      } else if (attr === '#href') {\n        this.newValues[attr] = getHref(elem);\n      } else {\n        this.newValues[attr] = elem.getAttribute(attr);\n      }\n    }\n  }\n  type () {\n    return 'svgedit.history.ChangeElementCommand';\n  }\n\n  /**\n  * Performs the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    let bChangedTransform = false;\n    for (const attr in this.newValues) {\n      if (this.newValues[attr]) {\n        if (attr === '#text') {\n          this.elem.textContent = this.newValues[attr];\n        } else if (attr === '#href') {\n          setHref(this.elem, this.newValues[attr]);\n        } else {\n          this.elem.setAttribute(attr, this.newValues[attr]);\n        }\n      } else {\n        if (attr === '#text') {\n          this.elem.textContent = '';\n        } else {\n          this.elem.setAttribute(attr, '');\n          this.elem.removeAttribute(attr);\n        }\n      }\n\n      if (attr === 'transform') { bChangedTransform = true; }\n    }\n\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * Reverses the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    let bChangedTransform = false;\n    for (const attr in this.oldValues) {\n      if (this.oldValues[attr]) {\n        if (attr === '#text') {\n          this.elem.textContent = this.oldValues[attr];\n        } else if (attr === '#href') {\n          setHref(this.elem, this.oldValues[attr]);\n        } else {\n          this.elem.setAttribute(attr, this.oldValues[attr]);\n        }\n      } else {\n        if (attr === '#text') {\n          this.elem.textContent = '';\n        } else {\n          this.elem.removeAttribute(attr);\n        }\n      }\n      if (attr === 'transform') { bChangedTransform = true; }\n    }\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    // Remove transformlist to prevent confusion that causes bugs like 575.\n    removeElementFromListMap(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nChangeElementCommand.type = ChangeElementCommand.prototype.type;\n\n// TODO: create a 'typing' command object that tracks changes in text\n// if a new Typing command is created and the top command on the stack is also a Typing\n// and they both affect the same element, then collapse the two commands into one\n\n/**\n* History command that can contain/execute multiple other commands.\n* @implements {module:history.HistoryCommand}\n*/\nexport class BatchCommand extends Command {\n  /**\n  * @param {string} [text] - An optional string visible to user related to this change\n  */\n  constructor (text) {\n    super();\n    this.text = text || 'Batch Command';\n    this.stack = [];\n  }\n\n  type () {\n    return 'svgedit.history.BatchCommand';\n  }\n\n  /**\n  * Runs \"apply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    const len = this.stack.length;\n    for (let i = 0; i < len; ++i) {\n      this.stack[i].apply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Runs \"unapply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    for (let i = this.stack.length - 1; i >= 0; i--) {\n      this.stack[i].unapply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * Iterate through all our subcommands.\n  * @returns {Element[]} All the elements we are changing\n  */\n  elements () {\n    const elems = [];\n    let cmd = this.stack.length;\n    while (cmd--) {\n      const thisElems = this.stack[cmd].elements();\n      let elem = thisElems.length;\n      while (elem--) {\n        if (!elems.includes(thisElems[elem])) { elems.push(thisElems[elem]); }\n      }\n    }\n    return elems;\n  }\n\n  /**\n  * Adds a given command to the history stack.\n  * @param {Command} cmd - The undo command object to add\n  * @returns {undefined}\n  */\n  addSubCommand (cmd) {\n    this.stack.push(cmd);\n  }\n\n  /**\n  * @returns {boolean} Indicates whether or not the batch command is empty\n  */\n  isEmpty () {\n    return !this.stack.length;\n  }\n}\nBatchCommand.type = BatchCommand.prototype.type;\n\n/**\n*\n*/\nexport class UndoManager {\n  /**\n  * @param {module:history.HistoryEventHandler} historyEventHandler\n  */\n  constructor (historyEventHandler) {\n    this.handler_ = historyEventHandler || null;\n    this.undoStackPointer = 0;\n    this.undoStack = [];\n\n    // this is the stack that stores the original values, the elements and\n    // the attribute name for begin/finish\n    this.undoChangeStackPointer = -1;\n    this.undoableChangeStack = [];\n  }\n\n  /**\n  * Resets the undo stack, effectively clearing the undo/redo history.\n  * @returns {undefined}\n  */\n  resetUndoStack () {\n    this.undoStack = [];\n    this.undoStackPointer = 0;\n  }\n\n  /**\n  * @returns {Integer} Current size of the undo history stack\n  */\n  getUndoStackSize () {\n    return this.undoStackPointer;\n  }\n\n  /**\n  * @returns {Integer} Current size of the redo history stack\n  */\n  getRedoStackSize () {\n    return this.undoStack.length - this.undoStackPointer;\n  }\n\n  /**\n  * @returns {string} String associated with the next undo command\n  */\n  getNextUndoCommandText () {\n    return this.undoStackPointer > 0 ? this.undoStack[this.undoStackPointer - 1].getText() : '';\n  }\n\n  /**\n  * @returns {string} String associated with the next redo command\n  */\n  getNextRedoCommandText () {\n    return this.undoStackPointer < this.undoStack.length ? this.undoStack[this.undoStackPointer].getText() : '';\n  }\n\n  /**\n  * Performs an undo step.\n  * @returns {undefined}\n  */\n  undo () {\n    if (this.undoStackPointer > 0) {\n      const cmd = this.undoStack[--this.undoStackPointer];\n      cmd.unapply(this.handler_);\n    }\n  }\n\n  /**\n  * Performs a redo step.\n  * @returns {undefined}\n  */\n  redo () {\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      const cmd = this.undoStack[this.undoStackPointer++];\n      cmd.apply(this.handler_);\n    }\n  }\n\n  /**\n  * Adds a command object to the undo history stack.\n  * @param {Command} cmd - The command object to add\n  * @returns {undefined}\n  */\n  addCommandToHistory (cmd) {\n    // FIXME: we MUST compress consecutive text changes to the same element\n    // (right now each keystroke is saved as a separate command that includes the\n    // entire text contents of the text element)\n    // TODO: consider limiting the history that we store here (need to do some slicing)\n\n    // if our stack pointer is not at the end, then we have to remove\n    // all commands after the pointer and insert the new command\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      this.undoStack = this.undoStack.splice(0, this.undoStackPointer);\n    }\n    this.undoStack.push(cmd);\n    this.undoStackPointer = this.undoStack.length;\n  }\n\n  /**\n  * This function tells the canvas to remember the old values of the\n  * `attrName` attribute for each element sent in.  The elements and values\n  * are stored on a stack, so the next call to `finishUndoableChange()` will\n  * pop the elements and old values off the stack, gets the current values\n  * from the DOM and uses all of these to construct the undo-able command.\n  * @param {string} attrName - The name of the attribute being changed\n  * @param {Element[]} elems - Array of DOM elements being changed\n  * @returns {undefined}\n  */\n  beginUndoableChange (attrName, elems) {\n    const p = ++this.undoChangeStackPointer;\n    let i = elems.length;\n    const oldValues = new Array(i), elements = new Array(i);\n    while (i--) {\n      const elem = elems[i];\n      if (elem == null) { continue; }\n      elements[i] = elem;\n      oldValues[i] = elem.getAttribute(attrName);\n    }\n    this.undoableChangeStack[p] = {\n      attrName,\n      oldValues,\n      elements\n    };\n  }\n\n  /**\n  * This function returns a `BatchCommand` object which summarizes the\n  * change since `beginUndoableChange` was called.  The command can then\n  * be added to the command history.\n  * @returns {BatchCommand} Batch command object with resulting changes\n  */\n  finishUndoableChange () {\n    const p = this.undoChangeStackPointer--;\n    const changeset = this.undoableChangeStack[p];\n    const {attrName} = changeset;\n    const batchCmd = new BatchCommand('Change ' + attrName);\n    let i = changeset.elements.length;\n    while (i--) {\n      const elem = changeset.elements[i];\n      if (elem == null) { continue; }\n      const changes = {};\n      changes[attrName] = changeset.oldValues[i];\n      if (changes[attrName] !== elem.getAttribute(attrName)) {\n        batchCmd.addSubCommand(new ChangeElementCommand(elem, changes, attrName));\n      }\n    }\n    this.undoableChangeStack[p] = null;\n    return batchCmd;\n  }\n}\n","/* globals jQuery */\n/**\n * Path functionality\n * @module path\n * @license MIT\n *\n * @copyright 2011 Alexis Deveria, 2011 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {shortFloat} from './units.js';\nimport {ChangeElementCommand, BatchCommand} from './history.js';\nimport {\n  transformPoint, getMatrix, snapToAngle, rectsIntersect,\n  transformListToTransform\n} from './math.js';\nimport {\n  assignAttributes, getElem, getRotationAngle, getBBox,\n  getRefElem, findDefs, snapToGrid,\n  getBBox as utilsGetBBox\n} from './utilities.js';\nimport {\n  supportsPathInsertItemBefore, supportsPathReplaceItem, isWebkit\n} from './browser.js';\n\nconst $ = jQuery;\n\nconst segData = {\n  2: ['x', 'y'], // PATHSEG_MOVETO_ABS\n  4: ['x', 'y'], // PATHSEG_LINETO_ABS\n  6: ['x', 'y', 'x1', 'y1', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_ABS\n  8: ['x', 'y', 'x1', 'y1'], // PATHSEG_CURVETO_QUADRATIC_ABS\n  10: ['x', 'y', 'r1', 'r2', 'angle', 'largeArcFlag', 'sweepFlag'], // PATHSEG_ARC_ABS\n  12: ['x'], // PATHSEG_LINETO_HORIZONTAL_ABS\n  14: ['y'], // PATHSEG_LINETO_VERTICAL_ABS\n  16: ['x', 'y', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_SMOOTH_ABS\n  18: ['x', 'y'] // PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS\n};\n\n/**\n * @tutorial LocaleDocs\n * @typedef {module:locale.LocaleStrings|PlainObject} module:path.uiStrings\n * @property {PlainObject.<string, string>} ui\n*/\n\nconst uiStrings = {};\n/**\n* @function module:path.setUiStrings\n* @param {module:path.uiStrings} strs\n* @returns {undefined}\n*/\nexport const setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.ui);\n};\n\nlet pathFuncs = [];\n\nlet linkControlPts = true;\n\n// Stores references to paths via IDs.\n// TODO: Make this cross-document happy.\nlet pathData = {};\n\n/**\n* @function module:path.setLinkControlPoints\n* @param {boolean} lcp\n* @returns {undefined}\n*/\nexport const setLinkControlPoints = function (lcp) {\n  linkControlPts = lcp;\n};\n\n/**\n * @name module:path.path\n * @type {null|module:path.Path}\n * @memberof module:path\n*/\nexport let path = null;\n\nlet editorContext_ = null;\n\n/**\n* @external MouseEvent\n*/\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:path.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:path.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n/**\n * @interface module:path.EditorContext\n * @property {module:select.SelectorManager} selectorManager\n * @property {module:svgcanvas.SvgCanvas} canvas\n */\n/**\n * @function module:path.EditorContext#call\n * @param {\"selected\"|\"changed\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed} arg - Argument to pass through to the callback function. If the event is \"changed\", an array of `Element`s is passed; if \"selected\", a single-item array of `Element` is passed.\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#resetD\n * @param {SVGPathElement} p\n * @returns {undefined}\n*/\n/**\n * Note: This doesn't round to an integer necessarily\n * @function module:path.EditorContext#round\n * @param {Float} val\n * @returns {Float} Rounded value to nearest value based on `currentZoom`\n */\n/**\n * @function module:path.EditorContext#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addToSelection\n * @param {Element[]} elemsToAdd - An array of DOM elements to add to the selection\n * @param {boolean} showGrips - Indicates whether the resize grips should be shown\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#remapElement\n * @param {Element} selected - DOM element to be changed\n * @param {PlainObject.<string, string>} changes - Object with changes to be remapped\n * @param {SVGMatrix} m - Matrix object to use for remapping coordinates\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#addSVGElementFromJson\n * @param {module:path.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:path.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:path.EditorContext#getOpacity\n * @returns {Float}\n */\n/**\n * @function module:path.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:path.EditorContext#getContainer\n * @returns {Element}\n */\n/**\n * @function module:path.EditorContext#setStarted\n * @param {boolean} s\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#getRubberBox\n * @returns {SVGRectElement}\n*/\n/**\n * @function module:path.EditorContext#setRubberBox\n * @param {SVGRectElement} rb\n * @returns {SVGRectElement} Same as parameter passed in\n */\n/**\n * @function module:path.EditorContext#addPtsToSelection\n * @param {PlainObject} cfg\n * @param {boolean} cfg.closedSubpath\n * @param {SVGCircleElement[]} cfg.grips\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#endChanges\n * @param {PlainObject} cfg\n * @param {string} cfg.cmd\n * @param {Element} cfg.elem\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#getCurrentZoom\n * @returns {Float} The current zoom level\n */\n/**\n * Returns the last created DOM element ID string\n * @function module:path.EditorContext#getId\n * @returns {string}\n */\n/**\n * Creates and returns a unique ID string for a DOM element\n * @function module:path.EditorContext#getNextId\n * @returns {string}\n*/\n/**\n * Gets the desired element from a mouse event\n * @function module:path.EditorContext#getMouseTarget\n * @param {external:MouseEvent} evt - Event object from the mouse event\n * @returns {Element} DOM element we want\n */\n/**\n * @function module:path.EditorContext#getCurrentMode\n * @returns {string}\n */\n/**\n * @function module:path.EditorContext#setCurrentMode\n * @param {string} cm The mode\n * @returns {string} The same mode as passed in\n*/\n/**\n * @function module:path.EditorContext#getDrawnPath\n * @returns {SVGPathElement|null}\n */\n/**\n * @function module:path.EditorContext#setDrawnPath\n * @param {SVGPathElement|null} dp\n * @returns {SVGPathElement|null} The same value as passed in\n */\n/**\n * @function module:path.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\n/**\n* @function module:path.init\n* @param {module:path.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n\n  pathFuncs = [0, 'ClosePath'];\n  const pathFuncsStrs = ['Moveto', 'Lineto', 'CurvetoCubic', 'CurvetoQuadratic', 'Arc',\n    'LinetoHorizontal', 'LinetoVertical', 'CurvetoCubicSmooth', 'CurvetoQuadraticSmooth'];\n  $.each(pathFuncsStrs, function (i, s) {\n    pathFuncs.push(s + 'Abs');\n    pathFuncs.push(s + 'Rel');\n  });\n};\n\n/**\n* @function module:path.insertItemBefore\n* @param {Element} elem\n* @param {Segment} newseg\n* @param {Integer} index\n* @returns {undefined}\n*/\nexport const insertItemBefore = function (elem, newseg, index) {\n  // Support insertItemBefore on paths for FF2\n  const list = elem.pathSegList;\n\n  if (supportsPathInsertItemBefore()) {\n    list.insertItemBefore(newseg, index);\n    return;\n  }\n  const len = list.numberOfItems;\n  const arr = [];\n  for (let i = 0; i < len; i++) {\n    const curSeg = list.getItem(i);\n    arr.push(curSeg);\n  }\n  list.clear();\n  for (let i = 0; i < len; i++) {\n    if (i === index) { // index + 1\n      list.appendItem(newseg);\n    }\n    list.appendItem(arr[i]);\n  }\n};\n\n/**\n* @function module:path.ptObjToArr\n* @todo See if this should just live in `replacePathSeg`\n* @param {string} type\n* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem\n* @returns {ArgumentsArray}\n*/\nexport const ptObjToArr = function (type, segItem) {\n  const props = segData[type];\n  return props.map((prop) => {\n    return segItem[prop];\n  });\n};\n\n/**\n* @function module:path.getGripPt\n* @param {Segment} seg\n* @param {module:math.XYObject} altPt\n* @returns {module:math.XYObject}\n*/\nexport const getGripPt = function (seg, altPt) {\n  const {path} = seg;\n  let out = {\n    x: altPt ? altPt.x : seg.item.x,\n    y: altPt ? altPt.y : seg.item.y\n  };\n\n  if (path.matrix) {\n    const pt = transformPoint(out.x, out.y, path.matrix);\n    out = pt;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n};\n\n/**\n* @function module:path.getPointFromGrip\n* @param {module:math.XYObject} pt\n* @param {module:path.Path} path\n* @returns {module:math.XYObject}\n*/\nexport const getPointFromGrip = function (pt, path) {\n  const out = {\n    x: pt.x,\n    y: pt.y\n  };\n\n  if (path.matrix) {\n    pt = transformPoint(out.x, out.y, path.imatrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  return out;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addPointGrip\n* @param {Integer} index\n* @param {Integer} x\n* @param {Integer} y\n* @returns {SVGCircleElement}\n*/\nexport const addPointGrip = function (index, x, y) {\n  // create the container of all the point grips\n  const pointGripContainer = getGripContainer();\n\n  let pointGrip = getElem('pathpointgrip_' + index);\n  // create it\n  if (!pointGrip) {\n    pointGrip = document.createElementNS(NS.SVG, 'circle');\n    const atts = {\n      id: 'pathpointgrip_' + index,\n      display: 'none',\n      r: 4,\n      fill: '#0FF',\n      stroke: '#00F',\n      'stroke-width': 2,\n      cursor: 'move',\n      style: 'pointer-events:all'\n    };\n    if ('pathNodeTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n      atts['xlink:title'] = uiStrings.pathNodeTooltip;\n    }\n    assignAttributes(pointGrip, atts);\n    pointGrip = pointGripContainer.appendChild(pointGrip);\n\n    const grip = $('#pathpointgrip_' + index);\n    grip.dblclick(function () {\n      if (path) {\n        path.setSegType();\n      }\n    });\n  }\n  if (x && y) {\n    // set up the point grip element and display it\n    assignAttributes(pointGrip, {\n      cx: x,\n      cy: y,\n      display: 'inline'\n    });\n  }\n  return pointGrip;\n};\n\n/**\n* @function module:path.getGripContainer\n* @returns {Element}\n*/\nexport const getGripContainer = function () {\n  let c = getElem('pathpointgrip_container');\n  if (!c) {\n    const parent = getElem('selectorParentGroup');\n    c = parent.appendChild(document.createElementNS(NS.SVG, 'g'));\n    c.id = 'pathpointgrip_container';\n  }\n  return c;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addCtrlGrip\n* @param {string} id\n* @returns {SVGCircleElement}\n*/\nexport const addCtrlGrip = function (id) {\n  let pointGrip = getElem('ctrlpointgrip_' + id);\n  if (pointGrip) { return pointGrip; }\n\n  pointGrip = document.createElementNS(NS.SVG, 'circle');\n  const atts = {\n    id: 'ctrlpointgrip_' + id,\n    display: 'none',\n    r: 4,\n    fill: '#0FF',\n    stroke: '#55F',\n    'stroke-width': 1,\n    cursor: 'move',\n    style: 'pointer-events:all'\n  };\n  if ('pathCtrlPtTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n    atts['xlink:title'] = uiStrings.pathCtrlPtTooltip;\n  }\n  assignAttributes(pointGrip, atts);\n  getGripContainer().append(pointGrip);\n  return pointGrip;\n};\n\n/**\n* @function module:path.getCtrlLine\n* @param {string} id\n* @returns {SVGLineElement}\n*/\nexport const getCtrlLine = function (id) {\n  let ctrlLine = getElem('ctrlLine_' + id);\n  if (ctrlLine) { return ctrlLine; }\n\n  ctrlLine = document.createElementNS(NS.SVG, 'line');\n  assignAttributes(ctrlLine, {\n    id: 'ctrlLine_' + id,\n    stroke: '#555',\n    'stroke-width': 1,\n    style: 'pointer-events:none'\n  });\n  getGripContainer().append(ctrlLine);\n  return ctrlLine;\n};\n\n/**\n* @function module:path.getPointGrip\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGCircleElement}\n*/\nexport const getPointGrip = function (seg, update) {\n  const {index} = seg;\n  const pointGrip = addPointGrip(index);\n\n  if (update) {\n    const pt = getGripPt(seg);\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n  }\n\n  return pointGrip;\n};\n\n/**\n* @function module:path.getControlPoints\n* @param {Segment} seg\n* @returns {PlainObject.<string, SVGLineElement|SVGCircleElement>}\n*/\nexport const getControlPoints = function (seg) {\n  const {item, index} = seg;\n  if (!('x1' in item) || !('x2' in item)) { return null; }\n  const cpt = {};\n  /* const pointGripContainer = */ getGripContainer();\n\n  // Note that this is intentionally not seg.prev.item\n  const prev = path.segs[index - 1].item;\n\n  const segItems = [prev, item];\n\n  for (let i = 1; i < 3; i++) {\n    const id = index + 'c' + i;\n\n    const ctrlLine = cpt['c' + i + '_line'] = getCtrlLine(id);\n\n    const pt = getGripPt(seg, {x: item['x' + i], y: item['y' + i]});\n    const gpt = getGripPt(seg, {x: segItems[i - 1].x, y: segItems[i - 1].y});\n\n    assignAttributes(ctrlLine, {\n      x1: pt.x,\n      y1: pt.y,\n      x2: gpt.x,\n      y2: gpt.y,\n      display: 'inline'\n    });\n\n    cpt['c' + i + '_line'] = ctrlLine;\n\n    // create it\n    const pointGrip = cpt['c' + i] = addCtrlGrip(id);\n\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n    cpt['c' + i] = pointGrip;\n  }\n  return cpt;\n};\n\n/**\n* This replaces the segment at the given index. Type is given as number.\n* @function module:path.replacePathSeg\n* @param {Integer} type Possible values set during {@link module:path.init}\n* @param {Integer} index\n* @param {ArgumentsArray} pts\n* @param {SVGPathElement} elem\n* @returns {undefined}\n*/\nexport const replacePathSeg = function (type, index, pts, elem) {\n  const pth = elem || path.elem;\n\n  const func = 'createSVGPathSeg' + pathFuncs[type];\n  const seg = pth[func].apply(pth, pts);\n\n  if (supportsPathReplaceItem()) {\n    pth.pathSegList.replaceItem(seg, index);\n  } else {\n    const segList = pth.pathSegList;\n    const len = segList.numberOfItems;\n    const arr = [];\n    for (let i = 0; i < len; i++) {\n      const curSeg = segList.getItem(i);\n      arr.push(curSeg);\n    }\n    segList.clear();\n    for (let i = 0; i < len; i++) {\n      if (i === index) {\n        segList.appendItem(seg);\n      } else {\n        segList.appendItem(arr[i]);\n      }\n    }\n  }\n};\n\n/**\n* @function module:path.getSegSelector\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGPathElement}\n*/\nexport const getSegSelector = function (seg, update) {\n  const {index} = seg;\n  let segLine = getElem('segline_' + index);\n  if (!segLine) {\n    const pointGripContainer = getGripContainer();\n    // create segline\n    segLine = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(segLine, {\n      id: 'segline_' + index,\n      display: 'none',\n      fill: 'none',\n      stroke: '#0FF',\n      'stroke-width': 2,\n      style: 'pointer-events:none',\n      d: 'M0,0 0,0'\n    });\n    pointGripContainer.append(segLine);\n  }\n\n  if (update) {\n    const {prev} = seg;\n    if (!prev) {\n      segLine.setAttribute('display', 'none');\n      return segLine;\n    }\n\n    const pt = getGripPt(prev);\n    // Set start point\n    replacePathSeg(2, 0, [pt.x, pt.y], segLine);\n\n    const pts = ptObjToArr(seg.type, seg.item); // , true);\n    for (let i = 0; i < pts.length; i += 2) {\n      const pt = getGripPt(seg, {x: pts[i], y: pts[i + 1]});\n      pts[i] = pt.x;\n      pts[i + 1] = pt.y;\n    }\n\n    replacePathSeg(seg.type, 1, pts, segLine);\n  }\n  return segLine;\n};\n\n/**\n * @typedef {PlainObject} Point\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n */\n\n/**\n* Takes three points and creates a smoother line based on them.\n* @function module:path.smoothControlPoints\n* @param {Point} ct1 - Object with x and y values (first control point)\n* @param {Point} ct2 - Object with x and y values (second control point)\n* @param {Point} pt - Object with x and y values (third point)\n* @returns {Point[]} Array of two \"smoothed\" point objects\n*/\nexport const smoothControlPoints = function (ct1, ct2, pt) {\n  // each point must not be the origin\n  const x1 = ct1.x - pt.x,\n    y1 = ct1.y - pt.y,\n    x2 = ct2.x - pt.x,\n    y2 = ct2.y - pt.y;\n\n  if ((x1 !== 0 || y1 !== 0) && (x2 !== 0 || y2 !== 0)) {\n    const\n      r1 = Math.sqrt(x1 * x1 + y1 * y1),\n      r2 = Math.sqrt(x2 * x2 + y2 * y2),\n      nct1 = editorContext_.getSVGRoot().createSVGPoint(),\n      nct2 = editorContext_.getSVGRoot().createSVGPoint();\n    let anglea = Math.atan2(y1, x1),\n      angleb = Math.atan2(y2, x2);\n    if (anglea < 0) { anglea += 2 * Math.PI; }\n    if (angleb < 0) { angleb += 2 * Math.PI; }\n\n    const angleBetween = Math.abs(anglea - angleb),\n      angleDiff = Math.abs(Math.PI - angleBetween) / 2;\n\n    let newAnglea, newAngleb;\n    if (anglea - angleb > 0) {\n      newAnglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff);\n    } else {\n      newAnglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff);\n    }\n\n    // rotate the points\n    nct1.x = r1 * Math.cos(newAnglea) + pt.x;\n    nct1.y = r1 * Math.sin(newAnglea) + pt.y;\n    nct2.x = r2 * Math.cos(newAngleb) + pt.x;\n    nct2.y = r2 * Math.sin(newAngleb) + pt.y;\n\n    return [nct1, nct2];\n  }\n  return undefined;\n};\n\n/**\n*\n*/\nexport class Segment {\n  /**\n  * @param {Integer} index\n  * @param {SVGPathSeg} item\n  * @todo Is `item` be more constrained here?\n  */\n  constructor (index, item) {\n    this.selected = false;\n    this.index = index;\n    this.item = item;\n    this.type = item.pathSegType;\n\n    this.ctrlpts = [];\n    this.ptgrip = null;\n    this.segsel = null;\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  showCtrlPts (y) {\n    for (const i in this.ctrlpts) {\n      if (this.ctrlpts.hasOwnProperty(i)) {\n        this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');\n      }\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  selectCtrls (y) {\n    $('#ctrlpointgrip_' + this.index + 'c1, #ctrlpointgrip_' + this.index + 'c2')\n      .attr('fill', y ? '#0FF' : '#EEE');\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  show (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('display', y ? 'inline' : 'none');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      // Show/hide all control points if available\n      this.showCtrlPts(y);\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  select (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('stroke', y ? '#0FF' : '#00F');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      if (this.ctrlpts) {\n        this.selectCtrls(y);\n      }\n      this.selected = y;\n    }\n  }\n\n  /**\n   * @returns {undefined}\n   */\n  addGrip () {\n    this.ptgrip = getPointGrip(this, true);\n    this.ctrlpts = getControlPoints(this); // , true);\n    this.segsel = getSegSelector(this, true);\n  }\n\n  /**\n   * @param {boolean} full\n   * @returns {undefined}\n   */\n  update (full) {\n    if (this.ptgrip) {\n      const pt = getGripPt(this);\n      assignAttributes(this.ptgrip, {\n        cx: pt.x,\n        cy: pt.y\n      });\n\n      getSegSelector(this, true);\n\n      if (this.ctrlpts) {\n        if (full) {\n          this.item = path.elem.pathSegList.getItem(this.index);\n          this.type = this.item.pathSegType;\n        }\n        getControlPoints(this);\n      }\n      // this.segsel.setAttribute('display', y ? 'inline' : 'none');\n    }\n  }\n\n  /**\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  move (dx, dy) {\n    const {item} = this;\n\n    const curPts = this.ctrlpts\n      ? [item.x += dx, item.y += dy,\n        item.x1, item.y1, item.x2 += dx, item.y2 += dy\n      ]\n      : [item.x += dx, item.y += dy];\n\n    replacePathSeg(this.type, this.index, curPts);\n\n    if (this.next && this.next.ctrlpts) {\n      const next = this.next.item;\n      const nextPts = [next.x, next.y,\n        next.x1 += dx, next.y1 += dy, next.x2, next.y2];\n      replacePathSeg(this.next.type, this.next.index, nextPts);\n    }\n\n    if (this.mate) {\n      // The last point of a closed subpath has a 'mate',\n      // which is the 'M' segment of the subpath\n      const {item} = this.mate;\n      const pts = [item.x += dx, item.y += dy];\n      replacePathSeg(this.mate.type, this.mate.index, pts);\n      // Has no grip, so does not need 'updating'?\n    }\n\n    this.update(true);\n    if (this.next) { this.next.update(true); }\n  }\n\n  /**\n   * @param {Integer} num\n   * @returns {undefined}\n   */\n  setLinked (num) {\n    let seg, anum, pt;\n    if (num === 2) {\n      anum = 1;\n      seg = this.next;\n      if (!seg) { return; }\n      pt = this.item;\n    } else {\n      anum = 2;\n      seg = this.prev;\n      if (!seg) { return; }\n      pt = seg.item;\n    }\n\n    const {item} = seg;\n    item['x' + anum] = pt.x + (pt.x - this.item['x' + num]);\n    item['y' + anum] = pt.y + (pt.y - this.item['y' + num]);\n\n    const pts = [item.x, item.y,\n      item.x1, item.y1,\n      item.x2, item.y2];\n\n    replacePathSeg(seg.type, seg.index, pts);\n    seg.update(true);\n  }\n\n  /**\n   * @param {Integer} num\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  moveCtrl (num, dx, dy) {\n    const {item} = this;\n    item['x' + num] += dx;\n    item['y' + num] += dy;\n\n    const pts = [item.x, item.y,\n      item.x1, item.y1, item.x2, item.y2];\n\n    replacePathSeg(this.type, this.index, pts);\n    this.update(true);\n  }\n\n  /**\n   * @param {Integer} newType Possible values set during {@link module:path.init}\n   * @param {ArgumentsArray} pts\n   * @returns {undefined}\n   */\n  setType (newType, pts) {\n    replacePathSeg(newType, this.index, pts);\n    this.type = newType;\n    this.item = path.elem.pathSegList.getItem(this.index);\n    this.showCtrlPts(newType === 6);\n    this.ctrlpts = getControlPoints(this);\n    this.update(true);\n  }\n}\n\n/**\n*\n*/\nexport class Path {\n  /**\n  * @param {SVGPathElement} elem\n  * @throws {Error} If constructed without a path element\n  */\n  constructor (elem) {\n    if (!elem || elem.tagName !== 'path') {\n      throw new Error('svgedit.path.Path constructed without a <path> element');\n    }\n\n    this.elem = elem;\n    this.segs = [];\n    this.selected_pts = [];\n    path = this;\n\n    this.init();\n  }\n\n  /**\n  * Reset path data.\n  * @returns {module:path.Path}\n  */\n  init () {\n    // Hide all grips, etc\n\n    // fixed, needed to work on all found elements, not just first\n    $(getGripContainer()).find('*').each(function () {\n      $(this).attr('display', 'none');\n    });\n\n    const segList = this.elem.pathSegList;\n    const len = segList.numberOfItems;\n    this.segs = [];\n    this.selected_pts = [];\n    this.first_seg = null;\n\n    // Set up segs array\n    for (let i = 0; i < len; i++) {\n      const item = segList.getItem(i);\n      const segment = new Segment(i, item);\n      segment.path = this;\n      this.segs.push(segment);\n    }\n\n    const {segs} = this;\n\n    let startI = null;\n    for (let i = 0; i < len; i++) {\n      const seg = segs[i];\n      const nextSeg = (i + 1) >= len ? null : segs[i + 1];\n      const prevSeg = (i - 1) < 0 ? null : segs[i - 1];\n      if (seg.type === 2) {\n        if (prevSeg && prevSeg.type !== 1) {\n          // New sub-path, last one is open,\n          // so add a grip to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n        }\n        // Remember that this is a starter seg\n        startI = i;\n      } else if (nextSeg && nextSeg.type === 1) {\n        // This is the last real segment of a closed sub-path\n        // Next is first seg after \"M\"\n        seg.next = segs[startI + 1];\n\n        // First seg after \"M\"'s prev is this\n        seg.next.prev = seg;\n        seg.mate = segs[startI];\n        seg.addGrip();\n        if (this.first_seg == null) {\n          this.first_seg = seg;\n        }\n      } else if (!nextSeg) {\n        if (seg.type !== 1) {\n          // Last seg, doesn't close so add a grip\n          // to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n          seg.addGrip();\n\n          if (!this.first_seg) {\n            // Open path, so set first as real first and add grip\n            this.first_seg = segs[startI];\n          }\n        }\n      } else if (seg.type !== 1) {\n        // Regular segment, so add grip and its \"next\"\n        seg.addGrip();\n\n        // Don't set its \"next\" if it's an \"M\"\n        if (nextSeg && nextSeg.type !== 2) {\n          seg.next = nextSeg;\n          seg.next.prev = seg;\n        }\n      }\n    }\n    return this;\n  }\n\n  /**\n  * @callback module:path.PathEachSegCallback\n  * @this module:path.Segment\n  * @param {Integer} i The index of the seg being iterated\n  * @returns {boolean} Will stop execution of `eachSeg` if returns `false`\n  */\n  /**\n  * @param {module:path.PathEachSegCallback} fn\n  * @returns {undefined}\n  */\n  eachSeg (fn) {\n    const len = this.segs.length;\n    for (let i = 0; i < len; i++) {\n      const ret = fn.call(this.segs[i], i);\n      if (ret === false) { break; }\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  addSeg (index) {\n    // Adds a new segment\n    const seg = this.segs[index];\n    if (!seg.prev) { return; }\n\n    const {prev} = seg;\n    let newseg, newX, newY;\n    switch (seg.item.pathSegType) {\n    case 4: {\n      newX = (seg.item.x + prev.item.x) / 2;\n      newY = (seg.item.y + prev.item.y) / 2;\n      newseg = this.elem.createSVGPathSegLinetoAbs(newX, newY);\n      break;\n    } case 6: { // make it a curved segment to preserve the shape (WRS)\n      // https://en.wikipedia.org/wiki/De_Casteljau%27s_algorithm#Geometric_interpretation\n      const p0x = (prev.item.x + seg.item.x1) / 2;\n      const p1x = (seg.item.x1 + seg.item.x2) / 2;\n      const p2x = (seg.item.x2 + seg.item.x) / 2;\n      const p01x = (p0x + p1x) / 2;\n      const p12x = (p1x + p2x) / 2;\n      newX = (p01x + p12x) / 2;\n      const p0y = (prev.item.y + seg.item.y1) / 2;\n      const p1y = (seg.item.y1 + seg.item.y2) / 2;\n      const p2y = (seg.item.y2 + seg.item.y) / 2;\n      const p01y = (p0y + p1y) / 2;\n      const p12y = (p1y + p2y) / 2;\n      newY = (p01y + p12y) / 2;\n      newseg = this.elem.createSVGPathSegCurvetoCubicAbs(newX, newY, p0x, p0y, p01x, p01y);\n      const pts = [seg.item.x, seg.item.y, p12x, p12y, p2x, p2y];\n      replacePathSeg(seg.type, index, pts);\n      break;\n    }\n    }\n\n    insertItemBefore(this.elem, newseg, index);\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  deleteSeg (index) {\n    const seg = this.segs[index];\n    const list = this.elem.pathSegList;\n\n    seg.show(false);\n    const {next} = seg;\n    if (seg.mate) {\n      // Make the next point be the \"M\" point\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, next.index, pt);\n\n      // Reposition last node\n      replacePathSeg(4, seg.index, pt);\n\n      list.removeItem(seg.mate.index);\n    } else if (!seg.prev) {\n      // First node of open path, make next point the M\n      // const {item} = seg;\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, seg.next.index, pt);\n      list.removeItem(index);\n    } else {\n      list.removeItem(index);\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {boolean}\n  */\n  subpathIsClosed (index) {\n    let closed = false;\n    // Check if subpath is already open\n    path.eachSeg(function (i) {\n      if (i <= index) { return true; }\n      if (this.type === 2) {\n        // Found M first, so open\n        return false;\n      }\n      if (this.type === 1) {\n        // Found Z first, so closed\n        closed = true;\n        return false;\n      }\n    });\n\n    return closed;\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  removePtFromSelection (index) {\n    const pos = this.selected_pts.indexOf(index);\n    if (pos === -1) {\n      return;\n    }\n    this.segs[index].select(false);\n    this.selected_pts.splice(pos, 1);\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  clearSelection () {\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.select(false);\n    });\n    this.selected_pts = [];\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  storeD () {\n    this.last_d = this.elem.getAttribute('d');\n  }\n\n  /**\n  * @param {Integer} y\n  * @returns {undefined}\n  */\n  show (y) {\n    // Shows this path's segment grips\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.show(y);\n    });\n    if (y) {\n      this.selectPt(this.first_seg.index);\n    }\n    return this;\n  }\n\n  /**\n  * Move selected points.\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  movePts (dx, dy) {\n    let i = this.selected_pts.length;\n    while (i--) {\n      const seg = this.segs[this.selected_pts[i]];\n      seg.move(dx, dy);\n    }\n  }\n\n  /**\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  moveCtrl (dx, dy) {\n    const seg = this.segs[this.selected_pts[0]];\n    seg.moveCtrl(this.dragctrl, dx, dy);\n    if (linkControlPts) {\n      seg.setLinked(this.dragctrl);\n    }\n  }\n\n  /**\n  * @param {?Integer} newType See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n  * @returns {undefined}\n  */\n  setSegType (newType) {\n    this.storeD();\n    let i = this.selected_pts.length;\n    let text;\n    while (i--) {\n      const selPt = this.selected_pts[i];\n\n      // Selected seg\n      const cur = this.segs[selPt];\n      const {prev} = cur;\n      if (!prev) { continue; }\n\n      if (!newType) { // double-click, so just toggle\n        text = 'Toggle Path Segment Type';\n\n        // Toggle segment to curve/straight line\n        const oldType = cur.type;\n\n        newType = (oldType === 6) ? 4 : 6;\n      }\n\n      newType = Number(newType);\n\n      const curX = cur.item.x;\n      const curY = cur.item.y;\n      const prevX = prev.item.x;\n      const prevY = prev.item.y;\n      let points;\n      switch (newType) {\n      case 6: {\n        if (cur.olditem) {\n          const old = cur.olditem;\n          points = [curX, curY, old.x1, old.y1, old.x2, old.y2];\n        } else {\n          const diffX = curX - prevX;\n          const diffY = curY - prevY;\n          // get control points from straight line segment\n          /*\n          const ct1x = (prevX + (diffY/2));\n          const ct1y = (prevY - (diffX/2));\n          const ct2x = (curX + (diffY/2));\n          const ct2y = (curY - (diffX/2));\n          */\n          // create control points on the line to preserve the shape (WRS)\n          const ct1x = (prevX + (diffX / 3));\n          const ct1y = (prevY + (diffY / 3));\n          const ct2x = (curX - (diffX / 3));\n          const ct2y = (curY - (diffY / 3));\n          points = [curX, curY, ct1x, ct1y, ct2x, ct2y];\n        }\n        break;\n      } case 4: {\n        points = [curX, curY];\n\n        // Store original prevve segment nums\n        cur.olditem = cur.item;\n        break;\n      }\n      }\n\n      cur.setType(newType, points);\n    }\n    path.endChanges(text);\n  }\n\n  /**\n  * @param {Integer} pt\n  * @param {Integer} ctrlNum\n  * @returns {undefined}\n  */\n  selectPt (pt, ctrlNum) {\n    this.clearSelection();\n    if (pt == null) {\n      this.eachSeg(function (i) {\n        // 'this' is the segment here.\n        if (this.prev) {\n          pt = i;\n        }\n      });\n    }\n    this.addPtsToSelection(pt);\n    if (ctrlNum) {\n      this.dragctrl = ctrlNum;\n\n      if (linkControlPts) {\n        this.segs[pt].setLinked(ctrlNum);\n      }\n    }\n  }\n\n  /**\n  * Update position of all points.\n  * @returns {Path}\n  */\n  update () {\n    const {elem} = this;\n    if (getRotationAngle(elem)) {\n      this.matrix = getMatrix(elem);\n      this.imatrix = this.matrix.inverse();\n    } else {\n      this.matrix = null;\n      this.imatrix = null;\n    }\n\n    this.eachSeg(function (i) {\n      this.item = elem.pathSegList.getItem(i);\n      this.update();\n    });\n\n    return this;\n  }\n\n  /**\n  * @param {string} text\n  * @returns {undefined}\n  */\n  endChanges (text) {\n    if (isWebkit()) { editorContext_.resetD(this.elem); }\n    const cmd = new ChangeElementCommand(this.elem, {d: this.last_d}, text);\n    editorContext_.endChanges({cmd, elem: this.elem});\n  }\n\n  /**\n  * @param {Integer|Integer[]} indexes\n  * @returns {undefined}\n  */\n  addPtsToSelection (indexes) {\n    if (!Array.isArray(indexes)) { indexes = [indexes]; }\n    for (let i = 0; i < indexes.length; i++) {\n      const index = indexes[i];\n      const seg = this.segs[index];\n      if (seg.ptgrip) {\n        if (!this.selected_pts.includes(index) && index >= 0) {\n          this.selected_pts.push(index);\n        }\n      }\n    }\n    this.selected_pts.sort();\n    let i = this.selected_pts.length;\n    const grips = [];\n    grips.length = i;\n    // Loop through points to be selected and highlight each\n    while (i--) {\n      const pt = this.selected_pts[i];\n      const seg = this.segs[pt];\n      seg.select(true);\n      grips[i] = seg.ptgrip;\n    }\n\n    const closedSubpath = this.subpathIsClosed(this.selected_pts[0]);\n    editorContext_.addPtsToSelection({grips, closedSubpath});\n  }\n}\n\n/**\n* @function module:path.getPath_\n* @param {SVGPathElement} elem\n* @returns {module:path.Path}\n*/\nexport const getPath_ = function (elem) {\n  let p = pathData[elem.id];\n  if (!p) {\n    p = pathData[elem.id] = new Path(elem);\n  }\n  return p;\n};\n\n/**\n* @function module:path.removePath_\n* @param {string} id\n* @returns {undefined}\n*/\nexport const removePath_ = function (id) {\n  if (id in pathData) { delete pathData[id]; }\n};\n\nlet newcx, newcy, oldcx, oldcy, angle;\n\nconst getRotVals = function (x, y) {\n  let dx = x - oldcx;\n  let dy = y - oldcy;\n\n  // rotate the point around the old center\n  let r = Math.sqrt(dx * dx + dy * dy);\n  let theta = Math.atan2(dy, dx) + angle;\n  dx = r * Math.cos(theta) + oldcx;\n  dy = r * Math.sin(theta) + oldcy;\n\n  // dx,dy should now hold the actual coordinates of each\n  // point after being rotated\n\n  // now we want to rotate them around the new center in the reverse direction\n  dx -= newcx;\n  dy -= newcy;\n\n  r = Math.sqrt(dx * dx + dy * dy);\n  theta = Math.atan2(dy, dx) - angle;\n\n  return {x: r * Math.cos(theta) + newcx,\n    y: r * Math.sin(theta) + newcy};\n};\n\n// If the path was rotated, we must now pay the piper:\n// Every path point must be rotated into the rotated coordinate system of\n// its old center, then determine the new center, then rotate it back\n// This is because we want the path to remember its rotation\n\n/**\n* @function module:path.recalcRotatedPath\n* @todo This is still using ye olde transform methods, can probably\n* be optimized or even taken care of by `recalculateDimensions`\n* @returns {undefined}\n*/\nexport const recalcRotatedPath = function () {\n  const currentPath = path.elem;\n  angle = getRotationAngle(currentPath, true);\n  if (!angle) { return; }\n  // selectedBBoxes[0] = path.oldbbox;\n  const oldbox = path.oldbbox; // selectedBBoxes[0],\n  oldcx = oldbox.x + oldbox.width / 2;\n  oldcy = oldbox.y + oldbox.height / 2;\n  const box = getBBox(currentPath);\n  newcx = box.x + box.width / 2;\n  newcy = box.y + box.height / 2;\n\n  // un-rotate the new center to the proper position\n  const dx = newcx - oldcx,\n    dy = newcy - oldcy,\n    r = Math.sqrt(dx * dx + dy * dy),\n    theta = Math.atan2(dy, dx) + angle;\n\n  newcx = r * Math.cos(theta) + oldcx;\n  newcy = r * Math.sin(theta) + oldcy;\n\n  const list = currentPath.pathSegList;\n\n  let i = list.numberOfItems;\n  while (i) {\n    i -= 1;\n    const seg = list.getItem(i),\n      type = seg.pathSegType;\n    if (type === 1) { continue; }\n\n    const rvals = getRotVals(seg.x, seg.y),\n      points = [rvals.x, rvals.y];\n    if (seg.x1 != null && seg.x2 != null) {\n      const cVals1 = getRotVals(seg.x1, seg.y1);\n      const cVals2 = getRotVals(seg.x2, seg.y2);\n      points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);\n    }\n    replacePathSeg(type, i, points);\n  } // loop for each point\n\n  /* box = */ getBBox(currentPath);\n  // selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;\n  // selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;\n\n  // now we must set the new transform to be rotated around the new center\n  const Rnc = editorContext_.getSVGRoot().createSVGTransform(),\n    tlist = getTransformList(currentPath);\n  Rnc.setRotate((angle * 180.0 / Math.PI), newcx, newcy);\n  tlist.replaceItem(Rnc, 0);\n};\n\n// ====================================\n// Public API starts here\n\n/**\n* @function module:path.clearData\n* @returns {undefined}\n*/\nexport const clearData = function () {\n  pathData = {};\n};\n\n// Making public for mocking\n/**\n* @function module:path.reorientGrads\n* @param {Element} elem\n* @param {SVGMatrix} m\n* @returns {undefined}\n*/\nexport const reorientGrads = function (elem, m) {\n  const bb = utilsGetBBox(elem);\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = elem.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      const grad = getRefElem(attrVal);\n      if (grad.tagName === 'linearGradient') {\n        let x1 = grad.getAttribute('x1') || 0;\n        let y1 = grad.getAttribute('y1') || 0;\n        let x2 = grad.getAttribute('x2') || 1;\n        let y2 = grad.getAttribute('y2') || 0;\n\n        // Convert to USOU points\n        x1 = (bb.width * x1) + bb.x;\n        y1 = (bb.height * y1) + bb.y;\n        x2 = (bb.width * x2) + bb.x;\n        y2 = (bb.height * y2) + bb.y;\n\n        // Transform those points\n        const pt1 = transformPoint(x1, y1, m);\n        const pt2 = transformPoint(x2, y2, m);\n\n        // Convert back to BB points\n        const gCoords = {};\n\n        gCoords.x1 = (pt1.x - bb.x) / bb.width;\n        gCoords.y1 = (pt1.y - bb.y) / bb.height;\n        gCoords.x2 = (pt2.x - bb.x) / bb.width;\n        gCoords.y2 = (pt2.y - bb.y) / bb.height;\n\n        const newgrad = grad.cloneNode(true);\n        $(newgrad).attr(gCoords);\n\n        newgrad.id = editorContext_.getNextId();\n        findDefs().append(newgrad);\n        elem.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n    }\n  }\n};\n\n/**\n* This is how we map paths to our preferred relative segment types\n* @name module:path.pathMap\n* @type {GenericArray}\n*/\nconst pathMap = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];\n\n/**\n * Convert a path to one with only absolute or relative values.\n * @todo move to pathActions.js\n * @function module:path.convertPath\n * @param {SVGPathElement} path - the path to convert\n * @param {boolean} toRel - true of convert to relative\n * @returns {string}\n */\nexport const convertPath = function (path, toRel) {\n  const segList = path.pathSegList;\n  const len = segList.numberOfItems;\n  let curx = 0, cury = 0;\n  let d = '';\n  let lastM = null;\n\n  for (let i = 0; i < len; ++i) {\n    const seg = segList.getItem(i);\n    // if these properties are not in the segment, set them to zero\n    let x = seg.x || 0,\n      y = seg.y || 0,\n      x1 = seg.x1 || 0,\n      y1 = seg.y1 || 0,\n      x2 = seg.x2 || 0,\n      y2 = seg.y2 || 0;\n\n    const type = seg.pathSegType;\n    let letter = pathMap[type]['to' + (toRel ? 'Lower' : 'Upper') + 'Case']();\n\n    switch (type) {\n    case 1: // z,Z closepath (Z/z)\n      d += 'z';\n      if (lastM && !toRel) {\n        curx = lastM[0];\n        cury = lastM[1];\n      }\n      break;\n    case 12: // absolute horizontal line (H)\n      x -= curx;\n      // Fallthrough\n    case 13: // relative horizontal line (h)\n      if (toRel) {\n        curx += x;\n        letter = 'l';\n      } else {\n        x += curx;\n        curx = x;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[x, cury]]);\n      break;\n    case 14: // absolute vertical line (V)\n      y -= cury;\n      // Fallthrough\n    case 15: // relative vertical line (v)\n      if (toRel) {\n        cury += y;\n        letter = 'l';\n      } else {\n        y += cury;\n        cury = y;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[curx, y]]);\n      break;\n    case 2: // absolute move (M)\n    case 4: // absolute line (L)\n    case 18: // absolute smooth quad (T)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 5: // relative line (l)\n    case 3: // relative move (m)\n    case 19: // relative smooth quad (t)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      if (type === 2 || type === 3) { lastM = [curx, cury]; }\n\n      d += pathDSegment(letter, [[x, y]]);\n      break;\n    case 6: // absolute cubic (C)\n      x -= curx; x1 -= curx; x2 -= curx;\n      y -= cury; y1 -= cury; y2 -= cury;\n      // Fallthrough\n    case 7: // relative cubic (c)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx; x2 += curx;\n        y += cury; y1 += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x2, y2], [x, y]]);\n      break;\n    case 8: // absolute quad (Q)\n      x -= curx; x1 -= curx;\n      y -= cury; y1 -= cury;\n      // Fallthrough\n    case 9: // relative quad (q)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx;\n        y += cury; y1 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x, y]]);\n      break;\n    case 10: // absolute elliptical arc (A)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 11: // relative elliptical arc (a)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[seg.r1, seg.r2]], [\n        seg.angle,\n        (seg.largeArcFlag ? 1 : 0),\n        (seg.sweepFlag ? 1 : 0)\n      ], [x, y]);\n      break;\n    case 16: // absolute smooth cubic (S)\n      x -= curx; x2 -= curx;\n      y -= cury; y2 -= cury;\n      // Fallthrough\n    case 17: // relative smooth cubic (s)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x2 += curx;\n        y += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x2, y2], [x, y]]);\n      break;\n    } // switch on path segment type\n  } // for each segment\n  return d;\n};\n\n/**\n * TODO: refactor callers in `convertPath` to use `getPathDFromSegments` instead of this function.\n * Legacy code refactored from `svgcanvas.pathActions.convertPath`.\n * @param {string} letter - path segment command (letter in potentially either case from {@link module:path.pathMap}; see [SVGPathSeg#pathSegTypeAsLetter]{@link https://www.w3.org/TR/SVG/single-page.html#paths-__svg__SVGPathSeg__pathSegTypeAsLetter})\n * @param {GenericArray<GenericArray<Integer>>} points - x,y points\n * @param {GenericArray<GenericArray<Integer>>} [morePoints] - x,y points\n * @param {Integer[]} [lastPoint] - x,y point\n * @returns {string}\n */\nfunction pathDSegment (letter, points, morePoints, lastPoint) {\n  $.each(points, function (i, pnt) {\n    points[i] = shortFloat(pnt);\n  });\n  let segment = letter + points.join(' ');\n  if (morePoints) {\n    segment += ' ' + morePoints.join(' ');\n  }\n  if (lastPoint) {\n    segment += ' ' + shortFloat(lastPoint);\n  }\n  return segment;\n}\n\n/**\n* Group: Path edit functions\n* Functions relating to editing path elements\n* @namespace {PlainObject} pathActions\n* @memberof module:path\n*/\nexport const pathActions = (function () {\n  let subpath = false;\n  let newPoint, firstCtrl;\n\n  let currentPath = null;\n  let hasMoved = false;\n  // No `editorContext_` yet but should be ok as is `null` by default\n  // editorContext_.setDrawnPath(null);\n\n  /**\n  * This function converts a polyline (created by the fh_path tool) into\n  * a path element and coverts every three line segments into a single bezier\n  * curve in an attempt to smooth out the free-hand.\n  * @function smoothPolylineIntoPath\n  * @param {Element} element\n  * @returns {Element}\n  */\n  const smoothPolylineIntoPath = function (element) {\n    let i;\n    const {points} = element;\n    const N = points.numberOfItems;\n    if (N >= 4) {\n      // loop through every 3 points and convert to a cubic bezier curve segment\n      //\n      // NOTE: this is cheating, it means that every 3 points has the potential to\n      // be a corner instead of treating each point in an equal manner. In general,\n      // this technique does not look that good.\n      //\n      // I am open to better ideas!\n      //\n      // Reading:\n      // - http://www.efg2.com/Lab/Graphics/Jean-YvesQueinecBezierCurves.htm\n      // - https://www.codeproject.com/KB/graphics/BezierSpline.aspx?msg=2956963\n      // - https://www.ian-ko.com/ET_GeoWizards/UserGuide/smooth.htm\n      // - https://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html\n      let curpos = points.getItem(0), prevCtlPt = null;\n      let d = [];\n      d.push(['M', curpos.x, ',', curpos.y, ' C'].join(''));\n      for (i = 1; i <= (N - 4); i += 3) {\n        let ct1 = points.getItem(i);\n        const ct2 = points.getItem(i + 1);\n        const end = points.getItem(i + 2);\n\n        // if the previous segment had a control point, we want to smooth out\n        // the control points on both sides\n        if (prevCtlPt) {\n          const newpts = smoothControlPoints(prevCtlPt, ct1, curpos);\n          if (newpts && newpts.length === 2) {\n            const prevArr = d[d.length - 1].split(',');\n            prevArr[2] = newpts[0].x;\n            prevArr[3] = newpts[0].y;\n            d[d.length - 1] = prevArr.join(',');\n            ct1 = newpts[1];\n          }\n        }\n\n        d.push([ct1.x, ct1.y, ct2.x, ct2.y, end.x, end.y].join(','));\n\n        curpos = end;\n        prevCtlPt = ct2;\n      }\n      // handle remaining line segments\n      d.push('L');\n      while (i < N) {\n        const pt = points.getItem(i);\n        d.push([pt.x, pt.y].join(','));\n        i++;\n      }\n      d = d.join(' ');\n\n      // create new path element\n      element = editorContext_.addSVGElementFromJson({\n        element: 'path',\n        curStyles: true,\n        attr: {\n          id: editorContext_.getId(),\n          d,\n          fill: 'none'\n        }\n      });\n      // No need to call \"changed\", as this is already done under mouseUp\n    }\n    return element;\n  };\n\n  return (/** @lends module:path.pathActions */ {\n    /**\n    * @param {MouseEvent} evt\n    * @param {Element} mouseTarget\n    * @param {Float} startX\n    * @param {Float} startY\n    * @returns {undefined}\n    */\n    mouseDown (evt, mouseTarget, startX, startY) {\n      let id;\n      if (editorContext_.getCurrentMode() === 'path') {\n        let mouseX = startX; // Was this meant to work with the other `mouseX`? (was defined globally so adding `let` to at least avoid a global)\n        let mouseY = startY; // Was this meant to work with the other `mouseY`? (was defined globally so adding `let` to at least avoid a global)\n\n        const currentZoom = editorContext_.getCurrentZoom();\n        let x = mouseX / currentZoom,\n          y = mouseY / currentZoom,\n          stretchy = getElem('path_stretch_line');\n        newPoint = [x, y];\n\n        if (editorContext_.getGridSnapping()) {\n          x = snapToGrid(x);\n          y = snapToGrid(y);\n          mouseX = snapToGrid(mouseX);\n          mouseY = snapToGrid(mouseY);\n        }\n\n        if (!stretchy) {\n          stretchy = document.createElementNS(NS.SVG, 'path');\n          assignAttributes(stretchy, {\n            id: 'path_stretch_line',\n            stroke: '#22C',\n            'stroke-width': '0.5',\n            fill: 'none'\n          });\n          stretchy = getElem('selectorParentGroup').appendChild(stretchy);\n        }\n        stretchy.setAttribute('display', 'inline');\n\n        let keep = null;\n        let index;\n        // if pts array is empty, create path element with M at current point\n        const drawnPath = editorContext_.getDrawnPath();\n        if (!drawnPath) {\n          const dAttr = 'M' + x + ',' + y + ' '; // Was this meant to work with the other `dAttr`? (was defined globally so adding `var` to at least avoid a global)\n          /* drawnPath = */ editorContext_.setDrawnPath(editorContext_.addSVGElementFromJson({\n            element: 'path',\n            curStyles: true,\n            attr: {\n              d: dAttr,\n              id: editorContext_.getNextId(),\n              opacity: editorContext_.getOpacity() / 2\n            }\n          }));\n          // set stretchy line to first point\n          stretchy.setAttribute('d', ['M', mouseX, mouseY, mouseX, mouseY].join(' '));\n          index = subpath ? path.segs.length : 0;\n          addPointGrip(index, mouseX, mouseY);\n        } else {\n          // determine if we clicked on an existing point\n          const seglist = drawnPath.pathSegList;\n          let i = seglist.numberOfItems;\n          const FUZZ = 6 / currentZoom;\n          let clickOnPoint = false;\n          while (i) {\n            i--;\n            const item = seglist.getItem(i);\n            const px = item.x, py = item.y;\n            // found a matching point\n            if (x >= (px - FUZZ) && x <= (px + FUZZ) &&\n              y >= (py - FUZZ) && y <= (py + FUZZ)\n            ) {\n              clickOnPoint = true;\n              break;\n            }\n          }\n\n          // get path element that we are in the process of creating\n          id = editorContext_.getId();\n\n          // Remove previous path object if previously created\n          removePath_(id);\n\n          const newpath = getElem(id);\n          let newseg;\n          let sSeg;\n          const len = seglist.numberOfItems;\n          // if we clicked on an existing point, then we are done this path, commit it\n          // (i, i+1) are the x,y that were clicked on\n          if (clickOnPoint) {\n            // if clicked on any other point but the first OR\n            // the first point was clicked on and there are less than 3 points\n            // then leave the path open\n            // otherwise, close the path\n            if (i <= 1 && len >= 2) {\n              // Create end segment\n              const absX = seglist.getItem(0).x;\n              const absY = seglist.getItem(0).y;\n\n              sSeg = stretchy.pathSegList.getItem(1);\n              if (sSeg.pathSegType === 4) {\n                newseg = drawnPath.createSVGPathSegLinetoAbs(absX, absY);\n              } else {\n                newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                  absX,\n                  absY,\n                  sSeg.x1 / currentZoom,\n                  sSeg.y1 / currentZoom,\n                  absX,\n                  absY\n                );\n              }\n\n              const endseg = drawnPath.createSVGPathSegClosePath();\n              seglist.appendItem(newseg);\n              seglist.appendItem(endseg);\n            } else if (len < 3) {\n              keep = false;\n              return keep;\n            }\n            $(stretchy).remove();\n\n            // This will signal to commit the path\n            // const element = newpath; // Other event handlers define own `element`, so this was probably not meant to interact with them or one which shares state (as there were none); I therefore adding a missing `var` to avoid a global\n            /* drawnPath = */ editorContext_.setDrawnPath(null);\n            editorContext_.setStarted(false);\n\n            if (subpath) {\n              if (path.matrix) {\n                editorContext_.remapElement(newpath, {}, path.matrix.inverse());\n              }\n\n              const newD = newpath.getAttribute('d');\n              const origD = $(path.elem).attr('d');\n              $(path.elem).attr('d', origD + newD);\n              $(newpath).remove();\n              if (path.matrix) {\n                recalcRotatedPath();\n              }\n              init();\n              pathActions.toEditMode(path.elem);\n              path.selectPt();\n              return false;\n            }\n          // else, create a new point, update path element\n          } else {\n            // Checks if current target or parents are #svgcontent\n            if (!$.contains(\n              editorContext_.getContainer(),\n              editorContext_.getMouseTarget(evt)\n            )) {\n              // Clicked outside canvas, so don't make point\n              console.log('Clicked outside canvas');\n              return false;\n            }\n\n            const num = drawnPath.pathSegList.numberOfItems;\n            const last = drawnPath.pathSegList.getItem(num - 1);\n            const lastx = last.x, lasty = last.y;\n\n            if (evt.shiftKey) {\n              const xya = snapToAngle(lastx, lasty, x, y);\n              ({x, y} = xya);\n            }\n\n            // Use the segment defined by stretchy\n            sSeg = stretchy.pathSegList.getItem(1);\n            if (sSeg.pathSegType === 4) {\n              newseg = drawnPath.createSVGPathSegLinetoAbs(\n                editorContext_.round(x),\n                editorContext_.round(y)\n              );\n            } else {\n              newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                editorContext_.round(x),\n                editorContext_.round(y),\n                sSeg.x1 / currentZoom,\n                sSeg.y1 / currentZoom,\n                sSeg.x2 / currentZoom,\n                sSeg.y2 / currentZoom\n              );\n            }\n\n            drawnPath.pathSegList.appendItem(newseg);\n\n            x *= currentZoom;\n            y *= currentZoom;\n\n            // set stretchy line to latest point\n            stretchy.setAttribute('d', ['M', x, y, x, y].join(' '));\n            index = num;\n            if (subpath) { index += path.segs.length; }\n            addPointGrip(index, x, y);\n          }\n          // keep = true;\n        }\n\n        return;\n      }\n\n      // TODO: Make sure currentPath isn't null at this point\n      if (!path) { return; }\n\n      path.storeD();\n\n      ({id} = evt.target);\n      let curPt;\n      if (id.substr(0, 14) === 'pathpointgrip_') {\n        // Select this point\n        curPt = path.cur_pt = parseInt(id.substr(14), 10);\n        path.dragging = [startX, startY];\n        const seg = path.segs[curPt];\n\n        // only clear selection if shift is not pressed (otherwise, add\n        // node to selection)\n        if (!evt.shiftKey) {\n          if (path.selected_pts.length <= 1 || !seg.selected) {\n            path.clearSelection();\n          }\n          path.addPtsToSelection(curPt);\n        } else if (seg.selected) {\n          path.removePtFromSelection(curPt);\n        } else {\n          path.addPtsToSelection(curPt);\n        }\n      } else if (id.startsWith('ctrlpointgrip_')) {\n        path.dragging = [startX, startY];\n\n        const parts = id.split('_')[1].split('c');\n        curPt = Number(parts[0]);\n        const ctrlNum = Number(parts[1]);\n        path.selectPt(curPt, ctrlNum);\n      }\n\n      // Start selection box\n      if (!path.dragging) {\n        let rubberBox = editorContext_.getRubberBox();\n        if (rubberBox == null) {\n          rubberBox = editorContext_.setRubberBox(\n            editorContext_.selectorManager.getRubberBandBox()\n          );\n        }\n        const currentZoom = editorContext_.getCurrentZoom();\n        assignAttributes(rubberBox, {\n          x: startX * currentZoom,\n          y: startY * currentZoom,\n          width: 0,\n          height: 0,\n          display: 'inline'\n        }, 100);\n      }\n    },\n    /**\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {undefined}\n    */\n    mouseMove (mouseX, mouseY) {\n      const currentZoom = editorContext_.getCurrentZoom();\n      hasMoved = true;\n      const drawnPath = editorContext_.getDrawnPath();\n      if (editorContext_.getCurrentMode() === 'path') {\n        if (!drawnPath) { return; }\n        const seglist = drawnPath.pathSegList;\n        const index = seglist.numberOfItems - 1;\n\n        if (newPoint) {\n          // First point\n          // if (!index) { return; }\n\n          // Set control points\n          const pointGrip1 = addCtrlGrip('1c1');\n          const pointGrip2 = addCtrlGrip('0c2');\n\n          // dragging pointGrip1\n          pointGrip1.setAttribute('cx', mouseX);\n          pointGrip1.setAttribute('cy', mouseY);\n          pointGrip1.setAttribute('display', 'inline');\n\n          const ptX = newPoint[0];\n          const ptY = newPoint[1];\n\n          // set curve\n          // const seg = seglist.getItem(index);\n          const curX = mouseX / currentZoom;\n          const curY = mouseY / currentZoom;\n          const altX = (ptX + (ptX - curX));\n          const altY = (ptY + (ptY - curY));\n\n          pointGrip2.setAttribute('cx', altX * currentZoom);\n          pointGrip2.setAttribute('cy', altY * currentZoom);\n          pointGrip2.setAttribute('display', 'inline');\n\n          const ctrlLine = getCtrlLine(1);\n          assignAttributes(ctrlLine, {\n            x1: mouseX,\n            y1: mouseY,\n            x2: altX * currentZoom,\n            y2: altY * currentZoom,\n            display: 'inline'\n          });\n\n          if (index === 0) {\n            firstCtrl = [mouseX, mouseY];\n          } else {\n            const last = seglist.getItem(index - 1);\n            let lastX = last.x;\n            let lastY = last.y;\n\n            if (last.pathSegType === 6) {\n              lastX += (lastX - last.x2);\n              lastY += (lastY - last.y2);\n            } else if (firstCtrl) {\n              lastX = firstCtrl[0] / currentZoom;\n              lastY = firstCtrl[1] / currentZoom;\n            }\n            replacePathSeg(6, index, [ptX, ptY, lastX, lastY, altX, altY], drawnPath);\n          }\n        } else {\n          const stretchy = getElem('path_stretch_line');\n          if (stretchy) {\n            const prev = seglist.getItem(index);\n            if (prev.pathSegType === 6) {\n              const prevX = prev.x + (prev.x - prev.x2);\n              const prevY = prev.y + (prev.y - prev.y2);\n              replacePathSeg(6, 1, [mouseX, mouseY, prevX * currentZoom, prevY * currentZoom, mouseX, mouseY], stretchy);\n            } else if (firstCtrl) {\n              replacePathSeg(6, 1, [mouseX, mouseY, firstCtrl[0], firstCtrl[1], mouseX, mouseY], stretchy);\n            } else {\n              replacePathSeg(4, 1, [mouseX, mouseY], stretchy);\n            }\n          }\n        }\n        return;\n      }\n      // if we are dragging a point, let's move it\n      if (path.dragging) {\n        const pt = getPointFromGrip({\n          x: path.dragging[0],\n          y: path.dragging[1]\n        }, path);\n        const mpt = getPointFromGrip({\n          x: mouseX,\n          y: mouseY\n        }, path);\n        const diffX = mpt.x - pt.x;\n        const diffY = mpt.y - pt.y;\n        path.dragging = [mouseX, mouseY];\n\n        if (path.dragctrl) {\n          path.moveCtrl(diffX, diffY);\n        } else {\n          path.movePts(diffX, diffY);\n        }\n      } else {\n        path.selected_pts = [];\n        path.eachSeg(function (i) {\n          const seg = this;\n          if (!seg.next && !seg.prev) { return; }\n\n          // const {item} = seg;\n          const rubberBox = editorContext_.getRubberBox();\n          const rbb = rubberBox.getBBox();\n\n          const pt = getGripPt(seg);\n          const ptBb = {\n            x: pt.x,\n            y: pt.y,\n            width: 0,\n            height: 0\n          };\n\n          const sel = rectsIntersect(rbb, ptBb);\n\n          this.select(sel);\n          // Note that addPtsToSelection is not being run\n          if (sel) { path.selected_pts.push(seg.index); }\n        });\n      }\n    },\n    /**\n    * @param {Event} evt\n    * @param {Element} element\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {undefined}\n    */\n    mouseUp (evt, element, mouseX, mouseY) {\n      const drawnPath = editorContext_.getDrawnPath();\n      // Create mode\n      if (editorContext_.getCurrentMode() === 'path') {\n        newPoint = null;\n        if (!drawnPath) {\n          element = getElem(editorContext_.getId());\n          editorContext_.setStarted(false);\n          firstCtrl = null;\n        }\n\n        return {\n          keep: true,\n          element\n        };\n      }\n\n      // Edit mode\n      const rubberBox = editorContext_.getRubberBox();\n      if (path.dragging) {\n        const lastPt = path.cur_pt;\n\n        path.dragging = false;\n        path.dragctrl = false;\n        path.update();\n\n        if (hasMoved) {\n          path.endChanges('Move path point(s)');\n        }\n\n        if (!evt.shiftKey && !hasMoved) {\n          path.selectPt(lastPt);\n        }\n      } else if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n        // Done with multi-node-select\n        rubberBox.setAttribute('display', 'none');\n\n        if (rubberBox.getAttribute('width') <= 2 && rubberBox.getAttribute('height') <= 2) {\n          pathActions.toSelectMode(evt.target);\n        }\n\n      // else, move back to select mode\n      } else {\n        pathActions.toSelectMode(evt.target);\n      }\n      hasMoved = false;\n    },\n    /**\n    * @param {Element} element\n    * @returns {undefined}\n    */\n    toEditMode (element) {\n      path = getPath_(element);\n      editorContext_.setCurrentMode('pathedit');\n      editorContext_.clearSelection();\n      path.show(true).update();\n      path.oldbbox = utilsGetBBox(path.elem);\n      subpath = false;\n    },\n    /**\n    * @param {Element} elem\n    * @fires module:svgcanvas.SvgCanvas#event:selected\n    * @returns {undefined}\n    */\n    toSelectMode (elem) {\n      const selPath = (elem === path.elem);\n      editorContext_.setCurrentMode('select');\n      path.show(false);\n      currentPath = false;\n      editorContext_.clearSelection();\n\n      if (path.matrix) {\n        // Rotated, so may need to re-calculate the center\n        recalcRotatedPath();\n      }\n\n      if (selPath) {\n        editorContext_.call('selected', [elem]);\n        editorContext_.addToSelection([elem], true);\n      }\n    },\n    /**\n    * @param {boolean} on\n    * @returns {undefined}\n    */\n    addSubPath (on) {\n      if (on) {\n        // Internally we go into \"path\" mode, but in the UI it will\n        // still appear as if in \"pathedit\" mode.\n        editorContext_.setCurrentMode('path');\n        subpath = true;\n      } else {\n        pathActions.clear(true);\n        pathActions.toEditMode(path.elem);\n      }\n    },\n    /**\n    * @param {Element} target\n    * @returns {undefined}\n    */\n    select (target) {\n      if (currentPath === target) {\n        pathActions.toEditMode(target);\n        editorContext_.setCurrentMode('pathedit');\n      // going into pathedit mode\n      } else {\n        currentPath = target;\n      }\n    },\n    /**\n    * @fires module:svgcanvas.SvgCanvas#event:changed\n    * @returns {undefined}\n    */\n    reorient () {\n      const elem = editorContext_.getSelectedElements()[0];\n      if (!elem) { return; }\n      const angle = getRotationAngle(elem);\n      if (angle === 0) { return; }\n\n      const batchCmd = new BatchCommand('Reorient path');\n      const changes = {\n        d: elem.getAttribute('d'),\n        transform: elem.getAttribute('transform')\n      };\n      batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n      editorContext_.clearSelection();\n      this.resetOrientation(elem);\n\n      editorContext_.addCommandToHistory(batchCmd);\n\n      // Set matrix to null\n      getPath_(elem).show(false).matrix = null;\n\n      this.clear();\n\n      editorContext_.addToSelection([elem], true);\n      editorContext_.call('changed', editorContext_.getSelectedElements());\n    },\n\n    /**\n    * @param {boolean} remove Not in use\n    * @returns {undefined}\n    */\n    clear (remove) {\n      const drawnPath = editorContext_.getDrawnPath();\n      currentPath = null;\n      if (drawnPath) {\n        const elem = getElem(editorContext_.getId());\n        $(getElem('path_stretch_line')).remove();\n        $(elem).remove();\n        $(getElem('pathpointgrip_container')).find('*').attr('display', 'none');\n        firstCtrl = null;\n        editorContext_.setDrawnPath(null);\n        editorContext_.setStarted(false);\n      } else if (editorContext_.getCurrentMode() === 'pathedit') {\n        this.toSelectMode();\n      }\n      if (path) { path.init().show(false); }\n    },\n    /**\n    * @param {?(Element|SVGPathElement)} pth\n    * @returns {false|undefined}\n    */\n    resetOrientation (pth) {\n      if (pth == null || pth.nodeName !== 'path') { return false; }\n      const tlist = getTransformList(pth);\n      const m = transformListToTransform(tlist).matrix;\n      tlist.clear();\n      pth.removeAttribute('transform');\n      const segList = pth.pathSegList;\n\n      // Opera/win/non-EN throws an error here.\n      // TODO: Find out why!\n      // Presumed fixed in Opera 10.5, so commented out for now\n\n      // try {\n      const len = segList.numberOfItems;\n      // } catch(err) {\n      //   const fixed_d = pathActions.convertPath(pth);\n      //   pth.setAttribute('d', fixed_d);\n      //   segList = pth.pathSegList;\n      //   const len = segList.numberOfItems;\n      // }\n      // let lastX, lastY;\n      for (let i = 0; i < len; ++i) {\n        const seg = segList.getItem(i);\n        const type = seg.pathSegType;\n        if (type === 1) { continue; }\n        const pts = [];\n        $.each(['', 1, 2], function (j, n) {\n          const x = seg['x' + n], y = seg['y' + n];\n          if (x !== undefined && y !== undefined) {\n            const pt = transformPoint(x, y, m);\n            pts.splice(pts.length, 0, pt.x, pt.y);\n          }\n        });\n        replacePathSeg(type, i, pts, pth);\n      }\n\n      reorientGrads(pth, m);\n    },\n    /**\n    * @returns {undefined}\n    */\n    zoomChange () {\n      if (editorContext_.getCurrentMode() === 'pathedit') {\n        path.update();\n      }\n    },\n    /**\n    * @typedef {PlainObject} module:path.NodePoint\n    * @property {Float} x\n    * @property {Float} y\n    * @property {Integer} type\n    */\n    /**\n    * @returns {module:path.NodePoint}\n    */\n    getNodePoint () {\n      const selPt = path.selected_pts.length ? path.selected_pts[0] : 1;\n\n      const seg = path.segs[selPt];\n      return {\n        x: seg.item.x,\n        y: seg.item.y,\n        type: seg.type\n      };\n    },\n    /**\n    * @param {boolean} linkPoints\n    * @returns {undefined}\n    */\n    linkControlPoints (linkPoints) {\n      setLinkControlPoints(linkPoints);\n    },\n    /**\n    * @returns {undefined}\n    */\n    clonePathNode () {\n      path.storeD();\n\n      const selPts = path.selected_pts;\n      // const {segs} = path;\n\n      let i = selPts.length;\n      const nums = [];\n\n      while (i--) {\n        const pt = selPts[i];\n        path.addSeg(pt);\n\n        nums.push(pt + i);\n        nums.push(pt + i + 1);\n      }\n      path.init().addPtsToSelection(nums);\n\n      path.endChanges('Clone path node(s)');\n    },\n    /**\n    * @returns {undefined}\n    */\n    opencloseSubPath () {\n      const selPts = path.selected_pts;\n      // Only allow one selected node for now\n      if (selPts.length !== 1) { return; }\n\n      const {elem} = path;\n      const list = elem.pathSegList;\n\n      // const len = list.numberOfItems;\n\n      const index = selPts[0];\n\n      let openPt = null;\n      let startItem = null;\n\n      // Check if subpath is already open\n      path.eachSeg(function (i) {\n        if (this.type === 2 && i <= index) {\n          startItem = this.item;\n        }\n        if (i <= index) { return true; }\n        if (this.type === 2) {\n          // Found M first, so open\n          openPt = i;\n          return false;\n        }\n        if (this.type === 1) {\n          // Found Z first, so closed\n          openPt = false;\n          return false;\n        }\n      });\n\n      if (openPt == null) {\n        // Single path, so close last seg\n        openPt = path.segs.length - 1;\n      }\n\n      if (openPt !== false) {\n        // Close this path\n\n        // Create a line going to the previous \"M\"\n        const newseg = elem.createSVGPathSegLinetoAbs(startItem.x, startItem.y);\n\n        const closer = elem.createSVGPathSegClosePath();\n        if (openPt === path.segs.length - 1) {\n          list.appendItem(newseg);\n          list.appendItem(closer);\n        } else {\n          insertItemBefore(elem, closer, openPt);\n          insertItemBefore(elem, newseg, openPt);\n        }\n\n        path.init().selectPt(openPt + 1);\n        return;\n      }\n\n      // M 1,1 L 2,2 L 3,3 L 1,1 z // open at 2,2\n      // M 2,2 L 3,3 L 1,1\n\n      // M 1,1 L 2,2 L 1,1 z M 4,4 L 5,5 L6,6 L 5,5 z\n      // M 1,1 L 2,2 L 1,1 z [M 4,4] L 5,5 L(M)6,6 L 5,5 z\n\n      const seg = path.segs[index];\n\n      if (seg.mate) {\n        list.removeItem(index); // Removes last \"L\"\n        list.removeItem(index); // Removes the \"Z\"\n        path.init().selectPt(index - 1);\n        return;\n      }\n\n      let lastM, zSeg;\n\n      // Find this sub-path's closing point and remove\n      for (let i = 0; i < list.numberOfItems; i++) {\n        const item = list.getItem(i);\n\n        if (item.pathSegType === 2) {\n          // Find the preceding M\n          lastM = i;\n        } else if (i === index) {\n          // Remove it\n          list.removeItem(lastM);\n          // index--;\n        } else if (item.pathSegType === 1 && index < i) {\n          // Remove the closing seg of this subpath\n          zSeg = i - 1;\n          list.removeItem(i);\n          break;\n        }\n      }\n\n      let num = (index - lastM) - 1;\n\n      while (num--) {\n        insertItemBefore(elem, list.getItem(lastM), zSeg);\n      }\n\n      const pt = list.getItem(lastM);\n\n      // Make this point the new \"M\"\n      replacePathSeg(2, lastM, [pt.x, pt.y]);\n\n      // i = index; // i is local here, so has no effect; what was the intent for this?\n\n      path.init().selectPt(0);\n    },\n    /**\n    * @returns {undefined}\n    */\n    deletePathNode () {\n      if (!pathActions.canDeleteNodes) { return; }\n      path.storeD();\n\n      const selPts = path.selected_pts;\n\n      let i = selPts.length;\n      while (i--) {\n        const pt = selPts[i];\n        path.deleteSeg(pt);\n      }\n\n      // Cleanup\n      const cleanup = function () {\n        const segList = path.elem.pathSegList;\n        let len = segList.numberOfItems;\n\n        const remItems = function (pos, count) {\n          while (count--) {\n            segList.removeItem(pos);\n          }\n        };\n\n        if (len <= 1) { return true; }\n\n        while (len--) {\n          const item = segList.getItem(len);\n          if (item.pathSegType === 1) {\n            const prev = segList.getItem(len - 1);\n            const nprev = segList.getItem(len - 2);\n            if (prev.pathSegType === 2) {\n              remItems(len - 1, 2);\n              cleanup();\n              break;\n            } else if (nprev.pathSegType === 2) {\n              remItems(len - 2, 3);\n              cleanup();\n              break;\n            }\n          } else if (item.pathSegType === 2) {\n            if (len > 0) {\n              const prevType = segList.getItem(len - 1).pathSegType;\n              // Path has M M\n              if (prevType === 2) {\n                remItems(len - 1, 1);\n                cleanup();\n                break;\n              // Entire path ends with Z M\n              } else if (prevType === 1 && segList.numberOfItems - 1 === len) {\n                remItems(len, 1);\n                cleanup();\n                break;\n              }\n            }\n          }\n        }\n        return false;\n      };\n\n      cleanup();\n\n      // Completely delete a path with 1 or 0 segments\n      if (path.elem.pathSegList.numberOfItems <= 1) {\n        pathActions.toSelectMode(path.elem);\n        editorContext_.canvas.deleteSelectedElements();\n        return;\n      }\n\n      path.init();\n      path.clearSelection();\n\n      // TODO: Find right way to select point now\n      // path.selectPt(selPt);\n      if (window.opera) { // Opera repaints incorrectly\n        const cp = $(path.elem);\n        cp.attr('d', cp.attr('d'));\n      }\n      path.endChanges('Delete path node(s)');\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Smooth polyline into path\n    * @function module:path.pathActions.smoothPolylineIntoPath\n    * @see module:path~smoothPolylineIntoPath\n    */\n    smoothPolylineIntoPath,\n    /**\n    * @param {?Integer} v See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n    * @returns {undefined}\n    */\n    setSegType (v) {\n      path.setSegType(v);\n    },\n    /**\n    * @param {string} attr\n    * @param {Float} newValue\n    * @returns {undefined}\n    */\n    moveNode (attr, newValue) {\n      const selPts = path.selected_pts;\n      if (!selPts.length) { return; }\n\n      path.storeD();\n\n      // Get first selected point\n      const seg = path.segs[selPts[0]];\n      const diff = {x: 0, y: 0};\n      diff[attr] = newValue - seg.item[attr];\n\n      seg.move(diff.x, diff.y);\n      path.endChanges('Move path point');\n    },\n    /**\n    * @param {Element} elem\n    * @returns {undefined}\n    */\n    fixEnd (elem) {\n      // Adds an extra segment if the last seg before a Z doesn't end\n      // at its M point\n      // M0,0 L0,100 L100,100 z\n      const segList = elem.pathSegList;\n      const len = segList.numberOfItems;\n      let lastM;\n      for (let i = 0; i < len; ++i) {\n        const item = segList.getItem(i);\n        if (item.pathSegType === 2) {\n          lastM = item;\n        }\n\n        if (item.pathSegType === 1) {\n          const prev = segList.getItem(i - 1);\n          if (prev.x !== lastM.x || prev.y !== lastM.y) {\n            // Add an L segment here\n            const newseg = elem.createSVGPathSegLinetoAbs(lastM.x, lastM.y);\n            insertItemBefore(elem, newseg, i);\n            // Can this be done better?\n            pathActions.fixEnd(elem);\n            break;\n          }\n        }\n      }\n      if (isWebkit()) { editorContext_.resetD(elem); }\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Convert a path to one with only absolute or relative values\n    * @function module:path.pathActions.convertPath\n    * @see module:path.convertPath\n    */\n    convertPath\n  });\n})();\n// end pathActions\n","/**\n * Mathematical utilities\n * @module math\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\n/**\n* @typedef {PlainObject} module:math.AngleCoord45\n* @property {Float} x - The angle-snapped x value\n* @property {Float} y - The angle-snapped y value\n* @property {Integer} a - The angle at which to snap\n*/\n\n/**\n* @typedef {PlainObject} module:math.XYObject\n* @property {Float} x\n* @property {Float} y\n*/\n\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\n\n// Constants\nconst NEAR_ZERO = 1e-14;\n\n// Throw away SVGSVGElement used for creating matrices/transforms.\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n/**\n * A (hopefully) quicker function to transform a point by a matrix\n * (this function avoids any DOM calls and just does the math).\n * @function module:math.transformPoint\n * @param {Float} x - Float representing the x coordinate\n * @param {Float} y - Float representing the y coordinate\n * @param {SVGMatrix} m - Matrix object to transform the point with\n * @returns {module:math.XYObject} An x, y object representing the transformed point\n*/\nexport const transformPoint = function (x, y, m) {\n  return {x: m.a * x + m.c * y + m.e, y: m.b * x + m.d * y + m.f};\n};\n\n/**\n * Helper function to check if the matrix performs no actual transform\n * (i.e. exists for identity purposes).\n * @function module:math.isIdentity\n * @param {SVGMatrix} m - The matrix object to check\n * @returns {boolean} Indicates whether or not the matrix is 1,0,0,1,0,0\n*/\nexport const isIdentity = function (m) {\n  return (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && m.e === 0 && m.f === 0);\n};\n\n/**\n * This function tries to return a `SVGMatrix` that is the multiplication `m1 * m2`.\n * We also round to zero when it's near zero.\n * @function module:math.matrixMultiply\n * @param {...SVGMatrix} args - Matrix objects to multiply\n * @returns {SVGMatrix} The matrix object resulting from the calculation\n*/\nexport const matrixMultiply = function (...args) {\n  const m = args.reduceRight((prev, m1) => {\n    return m1.multiply(prev);\n  });\n\n  if (Math.abs(m.a) < NEAR_ZERO) { m.a = 0; }\n  if (Math.abs(m.b) < NEAR_ZERO) { m.b = 0; }\n  if (Math.abs(m.c) < NEAR_ZERO) { m.c = 0; }\n  if (Math.abs(m.d) < NEAR_ZERO) { m.d = 0; }\n  if (Math.abs(m.e) < NEAR_ZERO) { m.e = 0; }\n  if (Math.abs(m.f) < NEAR_ZERO) { m.f = 0; }\n\n  return m;\n};\n\n/**\n * See if the given transformlist includes a non-indentity matrix transform.\n * @function module:math.hasMatrixTransform\n * @param {SVGTransformList} [tlist] - The transformlist to check\n * @returns {boolean} Whether or not a matrix transform was found\n*/\nexport const hasMatrixTransform = function (tlist) {\n  if (!tlist) { return false; }\n  let num = tlist.numberOfItems;\n  while (num--) {\n    const xform = tlist.getItem(num);\n    if (xform.type === 1 && !isIdentity(xform.matrix)) { return true; }\n  }\n  return false;\n};\n\n/**\n* @typedef {PlainObject} module:math.TransformedBox An object with the following values\n* @property {module:math.XYObject} tl - The top left coordinate\n* @property {module:math.XYObject} tr - The top right coordinate\n* @property {module:math.XYObject} bl - The bottom left coordinate\n* @property {module:math.XYObject} br - The bottom right coordinate\n* @property {PlainObject} aabox - Object with the following values:\n* @property {Float} aabox.x - Float with the axis-aligned x coordinate\n* @property {Float} aabox.y - Float with the axis-aligned y coordinate\n* @property {Float} aabox.width - Float with the axis-aligned width coordinate\n* @property {Float} aabox.height - Float with the axis-aligned height coordinate\n*/\n\n/**\n * Transforms a rectangle based on the given matrix.\n * @function module:math.transformBox\n * @param {Float} l - Float with the box's left coordinate\n * @param {Float} t - Float with the box's top coordinate\n * @param {Float} w - Float with the box width\n * @param {Float} h - Float with the box height\n * @param {SVGMatrix} m - Matrix object to transform the box by\n * @returns {module:math.TransformedBox}\n*/\nexport const transformBox = function (l, t, w, h, m) {\n  const tl = transformPoint(l, t, m),\n    tr = transformPoint((l + w), t, m),\n    bl = transformPoint(l, (t + h), m),\n    br = transformPoint((l + w), (t + h), m),\n\n    minx = Math.min(tl.x, tr.x, bl.x, br.x),\n    maxx = Math.max(tl.x, tr.x, bl.x, br.x),\n    miny = Math.min(tl.y, tr.y, bl.y, br.y),\n    maxy = Math.max(tl.y, tr.y, bl.y, br.y);\n\n  return {\n    tl,\n    tr,\n    bl,\n    br,\n    aabox: {\n      x: minx,\n      y: miny,\n      width: (maxx - minx),\n      height: (maxy - miny)\n    }\n  };\n};\n\n/**\n * This returns a single matrix Transform for a given Transform List\n * (this is the equivalent of `SVGTransformList.consolidate()` but unlike\n * that method, this one does not modify the actual `SVGTransformList`).\n * This function is very liberal with its `min`, `max` arguments.\n * @function module:math.transformListToTransform\n * @param {SVGTransformList} tlist - The transformlist object\n * @param {Integer} [min=0] - Optional integer indicating start transform position\n * @param {Integer} [max] - Optional integer indicating end transform position;\n *   defaults to one less than the tlist's `numberOfItems`\n * @returns {SVGTransform} A single matrix transform object\n*/\nexport const transformListToTransform = function (tlist, min, max) {\n  if (tlist == null) {\n    // Or should tlist = null have been prevented before this?\n    return svg.createSVGTransformFromMatrix(svg.createSVGMatrix());\n  }\n  min = min || 0;\n  max = max || (tlist.numberOfItems - 1);\n  min = parseInt(min, 10);\n  max = parseInt(max, 10);\n  if (min > max) { const temp = max; max = min; min = temp; }\n  let m = svg.createSVGMatrix();\n  for (let i = min; i <= max; ++i) {\n    // if our indices are out of range, just use a harmless identity matrix\n    const mtom = (i >= 0 && i < tlist.numberOfItems\n      ? tlist.getItem(i).matrix\n      : svg.createSVGMatrix());\n    m = matrixMultiply(m, mtom);\n  }\n  return svg.createSVGTransformFromMatrix(m);\n};\n\n/**\n * Get the matrix object for a given element.\n * @function module:math.getMatrix\n * @param {Element} elem - The DOM element to check\n * @returns {SVGMatrix} The matrix object associated with the element's transformlist\n*/\nexport const getMatrix = function (elem) {\n  const tlist = getTransformList(elem);\n  return transformListToTransform(tlist).matrix;\n};\n\n/**\n * Returns a 45 degree angle coordinate associated with the two given\n * coordinates.\n * @function module:math.snapToAngle\n * @param {Integer} x1 - First coordinate's x value\n * @param {Integer} y1 - First coordinate's y value\n * @param {Integer} x2 - Second coordinate's x value\n * @param {Integer} y2 - Second coordinate's y value\n * @returns {module:math.AngleCoord45}\n*/\nexport const snapToAngle = function (x1, y1, x2, y2) {\n  const snap = Math.PI / 4; // 45 degrees\n  const dx = x2 - x1;\n  const dy = y2 - y1;\n  const angle = Math.atan2(dy, dx);\n  const dist = Math.sqrt(dx * dx + dy * dy);\n  const snapangle = Math.round(angle / snap) * snap;\n\n  return {\n    x: x1 + dist * Math.cos(snapangle),\n    y: y1 + dist * Math.sin(snapangle),\n    a: snapangle\n  };\n};\n\n/**\n * Check if two rectangles (BBoxes objects) intersect each other.\n * @function module:math.rectsIntersect\n * @param {SVGRect} r1 - The first BBox-like object\n * @param {SVGRect} r2 - The second BBox-like object\n * @returns {boolean} True if rectangles intersect\n */\nexport const rectsIntersect = function (r1, r2) {\n  return r2.x < (r1.x + r1.width) &&\n    (r2.x + r2.width) > r1.x &&\n    r2.y < (r1.y + r1.height) &&\n    (r2.y + r2.height) > r1.y;\n};\n","/* globals jQuery */\n/**\n * Miscellaneous utilities\n * @module utilities\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {setUnitAttr, getTypeMap} from './units.js';\nimport {convertPath} from './path.js';\nimport {\n  hasMatrixTransform, transformListToTransform, transformBox\n} from './math.js';\nimport {\n  isWebkit, supportsHVLineContainerBBox, supportsPathBBox, supportsXpath,\n  supportsSelectors\n} from './browser.js';\n\n// Constants\nconst $ = jqPluginSVG(jQuery);\n\n// String used to encode base64.\nconst KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n\n// Much faster than running getBBox() every time\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst visElemsArr = visElems.split(',');\n// const hidElems = 'clipPath,defs,desc,feGaussianBlur,filter,linearGradient,marker,mask,metadata,pattern,radialGradient,stop,switch,symbol,title,textPath';\n\nlet editorContext_ = null;\nlet domdoc_ = null;\nlet domcontainer_ = null;\nlet svgroot_ = null;\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:utilities.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:utilities.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:utilities.EditorContext\n * @property {module:path.pathActions} pathActions\n */\n/**\n * @function module:utilities.EditorContext#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * Create a new SVG element based on the given object keys/values and add it\n * to the current layer.\n * The element will be run through `cleanupElement` before being returned\n * @function module:utilities.EditorContext#addSVGElementFromJson\n * @param {module:utilities.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:utilities.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:utilities.EditorContext#getDOMDocument\n * @returns {HTMLDocument}\n*/\n/**\n * @function module:utilities.EditorContext#getDOMContainer\n * @returns {HTMLElement}\n*/\n/**\n * @function module:utilities.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n/**\n * @function module:utilities.EditorContext#getBaseUnit\n * @returns {string}\n*/\n/**\n * @function module:utilities.EditorContext#getSnappingStep\n * @returns {Float|string}\n*/\n\n/**\n* @function module:utilities.init\n* @param {module:utilities.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n  domdoc_ = editorContext.getDOMDocument();\n  domcontainer_ = editorContext.getDOMContainer();\n  svgroot_ = editorContext.getSVGRoot();\n};\n\n/**\n * Used to prevent the [Billion laughs attack]{@link https://en.wikipedia.org/wiki/Billion_laughs_attack}.\n * @function module:utilities.dropXMLInteralSubset\n * @param {string} str String to be processed\n * @returns {string} The string with entity declarations in the internal subset removed\n * @todo This might be needed in other places `parseFromString` is used even without LGTM flagging\n */\nexport const dropXMLInteralSubset = (str) => {\n  return str.replace(/(<!DOCTYPE\\s+\\w*\\s*\\[).*(\\?\\]>)/, '$1$2');\n};\n\n/**\n* Converts characters in a string to XML-friendly entities.\n* @function module:utilities.toXml\n* @example `&` becomes `&amp;`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport const toXml = function (str) {\n  // &apos; is ok in XML, but not HTML\n  // &gt; does not normally need escaping, though it can if within a CDATA expression (and preceded by \"]]\")\n  return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\"/g, '&quot;').replace(/'/g, '&#x27;'); // Note: `&apos;` is XML only\n};\n\n/**\n* Converts XML entities in a string to single characters.\n* @function module:utilities.fromXml\n* @example `&amp;` becomes `&`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport const fromXml = function (str) {\n  return $('<p/>').html(str).text();\n};\n\n// This code was written by Tyler Akins and has been placed in the\n// public domain.  It would be nice if you left this header intact.\n// Base64 code from Tyler Akins -- http://rumkin.com\n\n// schiller: Removed string concatenation in favour of Array.join() optimization,\n//        also precalculate the size of the array needed.\n\n/**\n* Converts a string to base64.\n* @function module:utilities.encode64\n* @param {string} input\n* @returns {string} Base64 output\n*/\nexport const encode64 = function (input) {\n  // base64 strings are 4/3 larger than the original string\n  input = encodeUTF8(input); // convert non-ASCII characters\n  // input = convertToXMLReferences(input);\n  if (window.btoa) {\n    return window.btoa(input); // Use native if available\n  }\n  const output = [];\n  output.length = Math.floor((input.length + 2) / 3) * 4;\n\n  let i = 0, p = 0;\n  do {\n    const chr1 = input.charCodeAt(i++);\n    const chr2 = input.charCodeAt(i++);\n    const chr3 = input.charCodeAt(i++);\n\n    const enc1 = chr1 >> 2;\n    const enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n\n    let enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n    let enc4 = chr3 & 63;\n\n    if (isNaN(chr2)) {\n      enc3 = enc4 = 64;\n    } else if (isNaN(chr3)) {\n      enc4 = 64;\n    }\n\n    output[p++] = KEYSTR.charAt(enc1);\n    output[p++] = KEYSTR.charAt(enc2);\n    output[p++] = KEYSTR.charAt(enc3);\n    output[p++] = KEYSTR.charAt(enc4);\n  } while (i < input.length);\n\n  return output.join('');\n};\n\n/**\n* Converts a string from base64.\n* @function module:utilities.decode64\n* @param {string} input Base64-encoded input\n* @returns {string} Decoded output\n*/\nexport const decode64 = function (input) {\n  if (window.atob) {\n    return decodeUTF8(window.atob(input));\n  }\n\n  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =\n  input = input.replace(/[^A-Za-z0-9+/=]/g, '');\n\n  let output = '';\n  let i = 0;\n\n  do {\n    const enc1 = KEYSTR.indexOf(input.charAt(i++));\n    const enc2 = KEYSTR.indexOf(input.charAt(i++));\n    const enc3 = KEYSTR.indexOf(input.charAt(i++));\n    const enc4 = KEYSTR.indexOf(input.charAt(i++));\n\n    const chr1 = (enc1 << 2) | (enc2 >> 4);\n    const chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n    const chr3 = ((enc3 & 3) << 6) | enc4;\n\n    output += String.fromCharCode(chr1);\n\n    if (enc3 !== 64) {\n      output = output + String.fromCharCode(chr2);\n    }\n    if (enc4 !== 64) {\n      output = output + String.fromCharCode(chr3);\n    }\n  } while (i < input.length);\n  return decodeUTF8(output);\n};\n\n/**\n* @function module:utilities.decodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport const decodeUTF8 = function (argString) {\n  return decodeURIComponent(escape(argString));\n};\n\n// codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded\n/**\n* @function module:utilities.encodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport const encodeUTF8 = function (argString) {\n  return unescape(encodeURIComponent(argString));\n};\n\n/**\n * Convert dataURL to object URL.\n * @function module:utilities.dataURLToObjectURL\n * @param {string} dataurl\n * @returns {string} object URL or empty string\n */\nexport const dataURLToObjectURL = function (dataurl) {\n  if (typeof Uint8Array === 'undefined' || typeof Blob === 'undefined' || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  const arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],\n    bstr = atob(arr[1]);\n  let n = bstr.length;\n  const u8arr = new Uint8Array(n);\n  while (n--) {\n    u8arr[n] = bstr.charCodeAt(n);\n  }\n  const blob = new Blob([u8arr], {type: mime});\n  return URL.createObjectURL(blob);\n};\n\n/**\n * Get object URL for a blob object.\n * @function module:utilities.createObjectURL\n * @param {Blob} blob A Blob object or File object\n * @returns {string} object URL or empty string\n */\nexport const createObjectURL = function (blob) {\n  if (!blob || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  return URL.createObjectURL(blob);\n};\n\n/**\n * @property {string} blankPageObjectURL\n */\nexport const blankPageObjectURL = (function () {\n  if (typeof Blob === 'undefined') {\n    return '';\n  }\n  const blob = new Blob(['<html><head><title>SVG-edit</title></head><body>&nbsp;</body></html>'], {type: 'text/html'});\n  return createObjectURL(blob);\n})();\n\n/**\n* Converts a string to use XML references (for non-ASCII).\n* @function module:utilities.convertToXMLReferences\n* @param {string} input\n* @returns {string} Decimal numeric character references\n*/\nexport const convertToXMLReferences = function (input) {\n  let output = '';\n  [...input].forEach((ch) => {\n    const c = ch.charCodeAt();\n    if (c <= 127) {\n      output += ch;\n    } else {\n      output += `&#${c};`;\n    }\n  });\n  return output;\n};\n\n/**\n* Cross-browser compatible method of converting a string to an XML tree.\n* Found this function [here]{@link http://groups.google.com/group/jquery-dev/browse_thread/thread/c6d11387c580a77f}.\n* @function module:utilities.text2xml\n* @param {string} sXML\n* @throws {Error}\n* @returns {XMLDocument}\n*/\nexport const text2xml = function (sXML) {\n  if (sXML.includes('<svg:svg')) {\n    sXML = sXML.replace(/<(\\/?)svg:/g, '<$1').replace('xmlns:svg', 'xmlns');\n  }\n\n  let out, dXML;\n  try {\n    dXML = (window.DOMParser) ? new DOMParser() : new window.ActiveXObject('Microsoft.XMLDOM');\n    dXML.async = false;\n  } catch (e) {\n    throw new Error('XML Parser could not be instantiated');\n  }\n  try {\n    if (dXML.loadXML) {\n      out = (dXML.loadXML(sXML)) ? dXML : false;\n    } else {\n      out = dXML.parseFromString(sXML, 'text/xml');\n    }\n  } catch (e2) { throw new Error('Error parsing XML string'); }\n  return out;\n};\n\n/**\n* @typedef {PlainObject} module:utilities.BBoxObject (like `DOMRect`)\n* @property {Float} x\n* @property {Float} y\n* @property {Float} width\n* @property {Float} height\n*/\n\n/**\n* Converts a `SVGRect` into an object.\n* @function module:utilities.bboxToObj\n* @param {SVGRect} bbox - a SVGRect\n* @returns {module:utilities.BBoxObject} An object with properties names x, y, width, height.\n*/\nexport const bboxToObj = function ({x, y, width, height}) {\n  return {x, y, width, height};\n};\n\n/**\n* @callback module:utilities.TreeWalker\n* @param {Element} elem - DOM element being traversed\n* @returns {undefined}\n*/\n\n/**\n* Walks the tree and executes the callback on each element in a top-down fashion.\n* @function module:utilities.walkTree\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTree = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    cbFn(elem);\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n  }\n};\n\n/**\n* Walks the tree and executes the callback on each element in a depth-first fashion.\n* @function module:utilities.walkTreePost\n* @todo FIXME: Shouldn't this be calling walkTreePost?\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTreePost = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n    cbFn(elem);\n  }\n};\n\n/**\n* Extracts the URL from the `url(...)` syntax of some attributes.\n* Three variants:\n*  - `<circle fill=\"url(someFile.svg#foo)\" />`\n*  - `<circle fill=\"url('someFile.svg#foo')\" />`\n*  - `<circle fill='url(\"someFile.svg#foo\")' />`\n* @function module:utilities.getUrlFromAttr\n* @param {string} attrVal The attribute value as a string\n* @returns {string} String with just the URL, like \"someFile.svg#foo\"\n*/\nexport const getUrlFromAttr = function (attrVal) {\n  if (attrVal) {\n    // url('#somegrad')\n    if (attrVal.startsWith('url(\"')) {\n      return attrVal.substring(5, attrVal.indexOf('\"', 6));\n    }\n    // url('#somegrad')\n    if (attrVal.startsWith(\"url('\")) {\n      return attrVal.substring(5, attrVal.indexOf(\"'\", 6));\n    }\n    if (attrVal.startsWith('url(')) {\n      return attrVal.substring(4, attrVal.indexOf(')'));\n    }\n  }\n  return null;\n};\n\n/**\n* @function module:utilities.getHref\n* @param {Element} elem\n* @returns {string} The given element's `xlink:href` value\n*/\nexport let getHref = function (elem) {\n  return elem.getAttributeNS(NS.XLINK, 'href');\n};\n\n/**\n* Sets the given element's `xlink:href` value.\n* @function module:utilities.setHref\n* @param {Element} elem\n* @param {string} val\n* @returns {undefined}\n*/\nexport let setHref = function (elem, val) {\n  elem.setAttributeNS(NS.XLINK, 'xlink:href', val);\n};\n\n/**\n* @function module:utilities.findDefs\n* @returns {SVGDefsElement} The document's `<defs>` element, creating it first if necessary\n*/\nexport const findDefs = function () {\n  const svgElement = editorContext_.getSVGContent();\n  let defs = svgElement.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (defs.length > 0) {\n    defs = defs[0];\n  } else {\n    defs = svgElement.ownerDocument.createElementNS(NS.SVG, 'defs');\n    if (svgElement.firstChild) {\n      // first child is a comment, so call nextSibling\n      svgElement.insertBefore(defs, svgElement.firstChild.nextSibling);\n      // svgElement.firstChild.nextSibling.before(defs); // Not safe\n    } else {\n      svgElement.append(defs);\n    }\n  }\n  return defs;\n};\n\n// TODO(codedread): Consider moving the next to functions to bbox.js\n\n/**\n* Get correct BBox for a path in Webkit.\n* Converted from code found [here]{@link http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html}.\n* @function module:utilities.getPathBBox\n* @param {SVGPathElement} path - The path DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} A BBox-like object\n*/\nexport const getPathBBox = function (path) {\n  const seglist = path.pathSegList;\n  const tot = seglist.numberOfItems;\n\n  const bounds = [[], []];\n  const start = seglist.getItem(0);\n  let P0 = [start.x, start.y];\n\n  for (let i = 0; i < tot; i++) {\n    const seg = seglist.getItem(i);\n\n    if (seg.x === undefined) { continue; }\n\n    // Add actual points to limits\n    bounds[0].push(P0[0]);\n    bounds[1].push(P0[1]);\n\n    if (seg.x1) {\n      const P1 = [seg.x1, seg.y1],\n        P2 = [seg.x2, seg.y2],\n        P3 = [seg.x, seg.y];\n\n      for (let j = 0; j < 2; j++) {\n        const calc = function (t) {\n          return Math.pow(1 - t, 3) * P0[j] +\n            3 * Math.pow(1 - t, 2) * t * P1[j] +\n            3 * (1 - t) * Math.pow(t, 2) * P2[j] +\n            Math.pow(t, 3) * P3[j];\n        };\n\n        const b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];\n        const a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];\n        const c = 3 * P1[j] - 3 * P0[j];\n\n        if (a === 0) {\n          if (b === 0) {\n            continue;\n          }\n          const t = -c / b;\n          if (t > 0 && t < 1) {\n            bounds[j].push(calc(t));\n          }\n          continue;\n        }\n        const b2ac = Math.pow(b, 2) - 4 * c * a;\n        if (b2ac < 0) { continue; }\n        const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);\n        if (t1 > 0 && t1 < 1) { bounds[j].push(calc(t1)); }\n        const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);\n        if (t2 > 0 && t2 < 1) { bounds[j].push(calc(t2)); }\n      }\n      P0 = P3;\n    } else {\n      bounds[0].push(seg.x);\n      bounds[1].push(seg.y);\n    }\n  }\n\n  const x = Math.min.apply(null, bounds[0]);\n  const w = Math.max.apply(null, bounds[0]) - x;\n  const y = Math.min.apply(null, bounds[1]);\n  const h = Math.max.apply(null, bounds[1]) - y;\n  return {\n    x,\n    y,\n    width: w,\n    height: h\n  };\n};\n\n/**\n* Get the given/selected element's bounding box object, checking for\n* horizontal/vertical lines (see issue 717)\n* Note that performance is currently terrible, so some way to improve would\n* be great.\n* @param {Element} selected - Container or `<use>` DOM element\n* @returns {DOMRect} Bounding box object\n*/\nfunction groupBBFix (selected) {\n  if (supportsHVLineContainerBBox()) {\n    try { return selected.getBBox(); } catch (e) {}\n  }\n  const ref = $.data(selected, 'ref');\n  let matched = null;\n  let ret, copy;\n\n  if (ref) {\n    copy = $(ref).children().clone().attr('visibility', 'hidden');\n    $(svgroot_).append(copy);\n    matched = copy.filter('line, path');\n  } else {\n    matched = $(selected).find('line, path');\n  }\n\n  let issue = false;\n  if (matched.length) {\n    matched.each(function () {\n      const bb = this.getBBox();\n      if (!bb.width || !bb.height) {\n        issue = true;\n      }\n    });\n    if (issue) {\n      const elems = ref ? copy : $(selected).children();\n      ret = getStrokedBBox(elems);\n    } else {\n      ret = selected.getBBox();\n    }\n  } else {\n    ret = selected.getBBox();\n  }\n  if (ref) {\n    copy.remove();\n  }\n  return ret;\n}\n\n/**\n* Get the given/selected element's bounding box object, convert it to be more\n* usable when necessary.\n* @function module:utilities.getBBox\n* @param {Element} elem - Optional DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} Bounding box object\n*/\nexport const getBBox = function (elem) {\n  const selected = elem || editorContext_.geSelectedElements()[0];\n  if (elem.nodeType !== 1) { return null; }\n  const elname = selected.nodeName;\n\n  let ret = null;\n  switch (elname) {\n  case 'text':\n    if (selected.textContent === '') {\n      selected.textContent = 'a'; // Some character needed for the selector to use.\n      ret = selected.getBBox();\n      selected.textContent = '';\n    } else {\n      if (selected.getBBox) { ret = selected.getBBox(); }\n    }\n    break;\n  case 'path':\n    if (!supportsPathBBox()) {\n      ret = getPathBBox(selected);\n    } else {\n      if (selected.getBBox) { ret = selected.getBBox(); }\n    }\n    break;\n  case 'g':\n  case 'a':\n    ret = groupBBFix(selected);\n    break;\n  default:\n\n    if (elname === 'use') {\n      ret = groupBBFix(selected); // , true);\n    }\n    if (elname === 'use' || (elname === 'foreignObject' && isWebkit())) {\n      if (!ret) { ret = selected.getBBox(); }\n      // This is resolved in later versions of webkit, perhaps we should\n      // have a featured detection for correct 'use' behavior?\n      // ——————————\n      if (!isWebkit()) {\n        const bb = {};\n        bb.width = ret.width;\n        bb.height = ret.height;\n        bb.x = ret.x + parseFloat(selected.getAttribute('x') || 0);\n        bb.y = ret.y + parseFloat(selected.getAttribute('y') || 0);\n        ret = bb;\n      }\n    } else if (visElemsArr.includes(elname)) {\n      if (selected) {\n        try {\n          ret = selected.getBBox();\n        } catch (err) {\n          // tspan (and textPath apparently) have no `getBBox` in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=937268\n          // Re: Chrome returning bbox for containing text element, see: https://bugs.chromium.org/p/chromium/issues/detail?id=349835\n          const extent = selected.getExtentOfChar(0); // pos+dimensions of the first glyph\n          const width = selected.getComputedTextLength(); // width of the tspan\n          ret = {\n            x: extent.x,\n            y: extent.y,\n            width,\n            height: extent.height\n          };\n        }\n      } else {\n        // Check if element is child of a foreignObject\n        const fo = $(selected).closest('foreignObject');\n        if (fo.length) {\n          if (fo[0].getBBox) {\n            ret = fo[0].getBBox();\n          }\n        }\n      }\n    }\n  }\n  if (ret) {\n    ret = bboxToObj(ret);\n  }\n\n  // get the bounding box from the DOM (which is in that element's coordinate system)\n  return ret;\n};\n\n/**\n* @typedef {GenericArray} module:utilities.PathSegmentArray\n* @property {Integer} length 2\n* @property {\"M\"|\"L\"|\"C\"|\"Z\"} 0\n* @property {Float[]} 1\n*/\n\n/**\n* Create a path 'd' attribute from path segments.\n* Each segment is an array of the form: `[singleChar, [x,y, x,y, ...]]`\n* @function module:utilities.getPathDFromSegments\n* @param {module:utilities.PathSegmentArray[]} pathSegments - An array of path segments to be converted\n* @returns {string} The converted path d attribute.\n*/\nexport const getPathDFromSegments = function (pathSegments) {\n  let d = '';\n\n  $.each(pathSegments, function (j, [singleChar, pts]) {\n    d += singleChar;\n    for (let i = 0; i < pts.length; i += 2) {\n      d += (pts[i] + ',' + pts[i + 1]) + ' ';\n    }\n  });\n\n  return d;\n};\n\n/**\n* Make a path 'd' attribute from a simple SVG element shape.\n* @function module:utilities.getPathDFromElement\n* @param {Element} elem - The element to be converted\n* @returns {string} The path d attribute or `undefined` if the element type is unknown.\n*/\nexport const getPathDFromElement = function (elem) {\n  // Possibly the cubed root of 6, but 1.81 works best\n  let num = 1.81;\n  let d, a, rx, ry;\n  switch (elem.tagName) {\n  case 'ellipse':\n  case 'circle':\n    a = $(elem).attr(['rx', 'ry', 'cx', 'cy']);\n    const {cx, cy} = a;\n    ({rx, ry} = a);\n    if (elem.tagName === 'circle') {\n      rx = ry = $(elem).attr('r');\n    }\n\n    d = getPathDFromSegments([\n      ['M', [(cx - rx), (cy)]],\n      ['C', [(cx - rx), (cy - ry / num), (cx - rx / num), (cy - ry), (cx), (cy - ry)]],\n      ['C', [(cx + rx / num), (cy - ry), (cx + rx), (cy - ry / num), (cx + rx), (cy)]],\n      ['C', [(cx + rx), (cy + ry / num), (cx + rx / num), (cy + ry), (cx), (cy + ry)]],\n      ['C', [(cx - rx / num), (cy + ry), (cx - rx), (cy + ry / num), (cx - rx), (cy)]],\n      ['Z', []]\n    ]);\n    break;\n  case 'path':\n    d = elem.getAttribute('d');\n    break;\n  case 'line':\n    a = $(elem).attr(['x1', 'y1', 'x2', 'y2']);\n    d = 'M' + a.x1 + ',' + a.y1 + 'L' + a.x2 + ',' + a.y2;\n    break;\n  case 'polyline':\n    d = 'M' + elem.getAttribute('points');\n    break;\n  case 'polygon':\n    d = 'M' + elem.getAttribute('points') + ' Z';\n    break;\n  case 'rect':\n    const r = $(elem).attr(['rx', 'ry']);\n    ({rx, ry} = r);\n    const b = elem.getBBox();\n    const {x, y} = b, w = b.width, h = b.height;\n    num = 4 - num; // Why? Because!\n\n    if (!rx && !ry) {\n      // Regular rect\n      d = getPathDFromSegments([\n        ['M', [x, y]],\n        ['L', [x + w, y]],\n        ['L', [x + w, y + h]],\n        ['L', [x, y + h]],\n        ['L', [x, y]],\n        ['Z', []]\n      ]);\n    } else {\n      d = getPathDFromSegments([\n        ['M', [x, y + ry]],\n        ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]],\n        ['L', [x + w - rx, y]],\n        ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]],\n        ['L', [x + w, y + h - ry]],\n        ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]],\n        ['L', [x + rx, y + h]],\n        ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]],\n        ['L', [x, y + ry]],\n        ['Z', []]\n      ]);\n    }\n    break;\n  default:\n    break;\n  }\n\n  return d;\n};\n\n/**\n* Get a set of attributes from an element that is useful for convertToPath.\n* @function module:utilities.getExtraAttributesForConvertToPath\n* @param {Element} elem - The element to be probed\n* @returns {PlainObject.<\"marker-start\"|\"marker-end\"|\"marker-mid\"|\"filter\"|\"clip-path\", string>} An object with attributes.\n*/\nexport const getExtraAttributesForConvertToPath = function (elem) {\n  const attrs = {};\n  // TODO: make this list global so that we can properly maintain it\n  // TODO: what about @transform, @clip-rule, @fill-rule, etc?\n  $.each(['marker-start', 'marker-end', 'marker-mid', 'filter', 'clip-path'], function () {\n    const a = elem.getAttribute(this);\n    if (a) {\n      attrs[this] = a;\n    }\n  });\n  return attrs;\n};\n\n/**\n* Get the BBox of an element-as-path.\n* @function module:utilities.getBBoxOfElementAsPath\n* @param {Element} elem - The DOM element to be probed\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, `pathActions.resetOrientation()` is used. See: canvas.pathActions.\n* @returns {DOMRect|false} The resulting path's bounding box object.\n*/\nexport const getBBoxOfElementAsPath = function (elem, addSVGElementFromJson, pathActions) {\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: getExtraAttributesForConvertToPath(elem)\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const parent = elem.parentNode;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parent.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n  } else {\n    path.remove();\n  }\n\n  // Get the correct BBox of the new path, then discard it\n  pathActions.resetOrientation(path);\n  let bb = false;\n  try {\n    bb = path.getBBox();\n  } catch (e) {\n    // Firefox fails\n  }\n  path.remove();\n  return bb;\n};\n\n/**\n* Convert selected element to a path.\n* @function module:utilities.convertToPath\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.SVGElementJSON} attrs - Apply attributes to new path. see canvas.convertToPath\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}\n* @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}\n* @param {module:history} history - see history module\n* @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}\n* @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.\n*/\nexport const convertToPath = function (elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, history, addCommandToHistory) {\n  const batchCmd = new history.BatchCommand('Convert element to Path');\n\n  // Any attribute on the element not covered by the passed-in attributes\n  attrs = $.extend({}, attrs, getExtraAttributesForConvertToPath(elem));\n\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: attrs\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const {id} = elem;\n  const parent = elem.parentNode;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parent.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n\n    // Replace the current element with the converted one\n\n    // Reorient if it has a matrix\n    if (eltrans) {\n      const tlist = getTransformList(path);\n      if (hasMatrixTransform(tlist)) {\n        pathActions.resetOrientation(path);\n      }\n    }\n\n    const {nextSibling} = elem;\n    batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));\n    batchCmd.addSubCommand(new history.InsertElementCommand(path));\n\n    clearSelection();\n    elem.remove();\n    path.setAttribute('id', id);\n    path.removeAttribute('visibility');\n    addToSelection([path], true);\n\n    addCommandToHistory(batchCmd);\n\n    return path;\n  }\n  // the elem.tagName was not recognized, so no \"d\" attribute. Remove it, so we've haven't changed anything.\n  path.remove();\n  return null;\n};\n\n/**\n* Can the bbox be optimized over the native getBBox? The optimized bbox is the same as the native getBBox when\n* the rotation angle is a multiple of 90 degrees and there are no complex transforms.\n* Getting an optimized bbox can be dramatically slower, so we want to make sure it's worth it.\n*\n* The best example for this is a circle rotate 45 degrees. The circle doesn't get wider or taller when rotated\n* about it's center.\n*\n* The standard, unoptimized technique gets the native bbox of the circle, rotates the box 45 degrees, uses\n* that width and height, and applies any transforms to get the final bbox. This means the calculated bbox\n* is much wider than the original circle. If the angle had been 0, 90, 180, etc. both techniques render the\n* same bbox.\n*\n* The optimization is not needed if the rotation is a multiple 90 degrees. The default technique is to call\n* getBBox then apply the angle and any transforms.\n*\n* @param {Float} angle - The rotation angle in degrees\n* @param {boolean} hasMatrixTransform - True if there is a matrix transform\n* @returns {boolean} True if the bbox can be optimized.\n*/\nfunction bBoxCanBeOptimizedOverNativeGetBBox (angle, hasMatrixTransform) {\n  const angleModulo90 = angle % 90;\n  const closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;\n  const closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;\n  return hasMatrixTransform || !(closeTo0 || closeTo90);\n}\n\n/**\n* Get bounding box that includes any transforms.\n* @function module:utilities.getBBoxWithTransform\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getBBoxWithTransform = function (elem, addSVGElementFromJson, pathActions) {\n  // TODO: Fix issue with rotated groups. Currently they work\n  // fine in FF, but not in other browsers (same problem mentioned\n  // in Issue 339 comment #2).\n\n  let bb = getBBox(elem);\n\n  if (!bb) {\n    return null;\n  }\n\n  const tlist = getTransformList(elem);\n  const angle = getRotationAngleFromTransformList(tlist);\n  const hasMatrixXForm = hasMatrixTransform(tlist);\n\n  if (angle || hasMatrixXForm) {\n    let goodBb = false;\n    if (bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixXForm)) {\n      // Get the BBox from the raw path for these elements\n      // TODO: why ellipse and not circle\n      const elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];\n      if (elemNames.includes(elem.tagName)) {\n        bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n      } else if (elem.tagName === 'rect') {\n        // Look for radius\n        const rx = elem.getAttribute('rx');\n        const ry = elem.getAttribute('ry');\n        if (rx || ry) {\n          bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n        }\n      }\n    }\n\n    if (!goodBb) {\n      const {matrix} = transformListToTransform(tlist);\n      bb = transformBox(bb.x, bb.y, bb.width, bb.height, matrix).aabox;\n\n      // Old technique that was exceedingly slow with large documents.\n      //\n      // Accurate way to get BBox of rotated element in Firefox:\n      // Put element in group and get its BBox\n      //\n      // Must use clone else FF freaks out\n      // const clone = elem.cloneNode(true);\n      // const g = document.createElementNS(NS.SVG, 'g');\n      // const parent = elem.parentNode;\n      // parent.append(g);\n      // g.append(clone);\n      // const bb2 = bboxToObj(g.getBBox());\n      // g.remove();\n    }\n  }\n  return bb;\n};\n\n// TODO: This is problematic with large stroke-width and, for example, a single horizontal line. The calculated BBox extends way beyond left and right sides.\nfunction getStrokeOffsetForBBox (elem) {\n  const sw = elem.getAttribute('stroke-width');\n  return (!isNaN(sw) && elem.getAttribute('stroke') !== 'none') ? sw / 2 : 0;\n}\n\n/**\n * @typedef {PlainObject} BBox\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n * @property {Float} width\n * @property {Float} height\n */\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBox\n* @param {Element[]} elems - Array with DOM elements to check\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getStrokedBBox = function (elems, addSVGElementFromJson, pathActions) {\n  if (!elems || !elems.length) { return false; }\n\n  let fullBb;\n  $.each(elems, function () {\n    if (fullBb) { return; }\n    if (!this.parentNode) { return; }\n    fullBb = getBBoxWithTransform(this, addSVGElementFromJson, pathActions);\n  });\n\n  // This shouldn't ever happen...\n  if (fullBb === undefined) { return null; }\n\n  // fullBb doesn't include the stoke, so this does no good!\n  // if (elems.length == 1) return fullBb;\n\n  let maxX = fullBb.x + fullBb.width;\n  let maxY = fullBb.y + fullBb.height;\n  let minX = fullBb.x;\n  let minY = fullBb.y;\n\n  // If only one elem, don't call the potentially slow getBBoxWithTransform method again.\n  if (elems.length === 1) {\n    const offset = getStrokeOffsetForBBox(elems[0]);\n    minX -= offset;\n    minY -= offset;\n    maxX += offset;\n    maxY += offset;\n  } else {\n    $.each(elems, function (i, elem) {\n      const curBb = getBBoxWithTransform(elem, addSVGElementFromJson, pathActions);\n      if (curBb) {\n        const offset = getStrokeOffsetForBBox(elem);\n        minX = Math.min(minX, curBb.x - offset);\n        minY = Math.min(minY, curBb.y - offset);\n        // TODO: The old code had this test for max, but not min. I suspect this test should be for both min and max\n        if (elem.nodeType === 1) {\n          maxX = Math.max(maxX, curBb.x + curBb.width + offset);\n          maxY = Math.max(maxY, curBb.y + curBb.height + offset);\n        }\n      }\n    });\n  }\n\n  fullBb.x = minX;\n  fullBb.y = minY;\n  fullBb.width = maxX - minX;\n  fullBb.height = maxY - minY;\n  return fullBb;\n};\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:utilities.getVisibleElements\n* @param {Element} parent - The parent DOM element to search within\n* @returns {Element[]} All \"visible\" elements.\n*/\nexport const getVisibleElements = function (parent) {\n  if (!parent) {\n    parent = $(editorContext_.getSVGContent()).children(); // Prevent layers from being included\n  }\n\n  const contentElems = [];\n  $(parent).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push(elem);\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBoxDefaultVisible\n* @param {Element[]} elems - Array with DOM elements to check\n* @returns {module:utilities.BBoxObject} A single bounding box object\n*/\nexport const getStrokedBBoxDefaultVisible = function (elems) {\n  if (!elems) { elems = getVisibleElements(); }\n  return getStrokedBBox(\n    elems,\n    editorContext_.addSVGElementFromJson,\n    editorContext_.pathActions\n  );\n};\n\n/**\n* Get the rotation angle of the given transform list.\n* @function module:utilities.getRotationAngleFromTransformList\n* @param {SVGTransformList} tlist - List of transforms\n* @param {boolean} toRad - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport const getRotationAngleFromTransformList = function (tlist, toRad) {\n  if (!tlist) { return 0; } // <svg> elements have no tlist\n  const N = tlist.numberOfItems;\n  for (let i = 0; i < N; ++i) {\n    const xform = tlist.getItem(i);\n    if (xform.type === 4) {\n      return toRad ? xform.angle * Math.PI / 180.0 : xform.angle;\n    }\n  }\n  return 0.0;\n};\n\n/**\n* Get the rotation angle of the given/selected DOM element.\n* @function module:utilities.getRotationAngle\n* @param {Element} [elem] - DOM element to get the angle for. Default to first of selected elements.\n* @param {boolean} [toRad=false] - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport let getRotationAngle = function (elem, toRad) {\n  const selected = elem || editorContext_.getSelectedElements()[0];\n  // find the rotation transform (if any) and set it\n  const tlist = getTransformList(selected);\n  return getRotationAngleFromTransformList(tlist, toRad);\n};\n\n/**\n* Get the reference element associated with the given attribute value.\n* @function module:utilities.getRefElem\n* @param {string} attrVal - The attribute value as a string\n* @returns {Element} Reference element\n*/\nexport const getRefElem = function (attrVal) {\n  return getElem(getUrlFromAttr(attrVal).substr(1));\n};\n\n/**\n* Get a DOM element by ID within the SVG root element.\n* @function module:utilities.getElem\n* @param {string} id - String with the element's new ID\n* @returns {Element}\n*/\nexport const getElem = (supportsSelectors())\n  ? function (id) {\n    // querySelector lookup\n    return svgroot_.querySelector('#' + id);\n  } : supportsXpath()\n    ? function (id) {\n      // xpath lookup\n      return domdoc_.evaluate(\n        'svg:svg[@id=\"svgroot\"]//svg:*[@id=\"' + id + '\"]',\n        domcontainer_,\n        function () { return NS.SVG; },\n        9,\n        null).singleNodeValue;\n    }\n    : function (id) {\n      // jQuery lookup: twice as slow as xpath in FF\n      return $(svgroot_).find('[id=' + id + ']')[0];\n    };\n\n/**\n* Assigns multiple attributes to an element.\n* @function module:utilities.assignAttributes\n* @param {Element} elem - DOM element to apply new attribute values to\n* @param {PlainObject.<string, string>} attrs - Object with attribute keys/values\n* @param {Integer} [suspendLength] - Milliseconds to suspend redraw\n* @param {boolean} [unitCheck=false] - Boolean to indicate the need to use units.setUnitAttr\n* @returns {undefined}\n*/\nexport const assignAttributes = function (elem, attrs, suspendLength, unitCheck) {\n  for (const [key, value] of Object.entries(attrs)) {\n    const ns = (key.substr(0, 4) === 'xml:'\n      ? NS.XML\n      : key.substr(0, 6) === 'xlink:' ? NS.XLINK : null);\n\n    if (ns) {\n      elem.setAttributeNS(ns, key, value);\n    } else if (!unitCheck) {\n      elem.setAttribute(key, value);\n    } else {\n      setUnitAttr(elem, key, value);\n    }\n  }\n};\n\n/**\n* Remove unneeded (default) attributes, making resulting SVG smaller.\n* @function module:utilities.cleanupElement\n* @param {Element} element - DOM element to clean up\n* @returns {undefined}\n*/\nexport const cleanupElement = function (element) {\n  const defaults = {\n    'fill-opacity': 1,\n    'stop-opacity': 1,\n    opacity: 1,\n    stroke: 'none',\n    'stroke-dasharray': 'none',\n    'stroke-linejoin': 'miter',\n    'stroke-linecap': 'butt',\n    'stroke-opacity': 1,\n    'stroke-width': 1,\n    rx: 0,\n    ry: 0\n  };\n\n  if (element.nodeName === 'ellipse') {\n    // Ellipse elements require rx and ry attributes\n    delete defaults.rx;\n    delete defaults.ry;\n  }\n\n  for (const attr in defaults) {\n    const val = defaults[attr];\n    if (element.getAttribute(attr) === String(val)) {\n      element.removeAttribute(attr);\n    }\n  }\n};\n\n/**\n* Round value to for snapping.\n* @function module:utilities.snapToGrid\n* @param {Float} value\n* @returns {Integer}\n*/\nexport const snapToGrid = function (value) {\n  const unit = editorContext_.getBaseUnit();\n  let stepSize = editorContext_.getSnappingStep();\n  if (unit !== 'px') {\n    stepSize *= getTypeMap()[unit];\n  }\n  value = Math.round(value / stepSize) * stepSize;\n  return value;\n};\n\n/**\n* Escapes special characters in a regular expression.\n* @function module:utilities.regexEscape\n* @param {string} str\n* @returns {string}\n*/\nexport const regexEscape = function (str) {\n  // From: http://phpjs.org/functions\n  return String(str).replace(new RegExp('[.\\\\\\\\+*?\\\\[\\\\^\\\\]$(){}=!<>|:\\\\-]', 'g'), '\\\\$&');\n};\n\n/**\n * Prevents default browser click behaviour on the given element.\n * @function module:utilities.preventClickDefault\n * @param {Element} img - The DOM element to prevent the click on\n * @returns {undefined}\n */\nexport const preventClickDefault = function (img) {\n  $(img).click(function (e) { e.preventDefault(); });\n};\n\n/**\n * @callback module:utilities.GetNextID\n * @returns {string} The ID\n */\n/**\n * Create a clone of an element, updating its ID and its children's IDs when needed.\n * @function module:utilities.copyElem\n * @param {Element} el - DOM element to clone\n * @param {module:utilities.GetNextID} getNextId - The getter of the next unique ID.\n * @returns {Element} The cloned element\n */\nexport const copyElem = function (el, getNextId) {\n  // manually create a copy of the element\n  const newEl = document.createElementNS(el.namespaceURI, el.nodeName);\n  $.each(el.attributes, function (i, attr) {\n    if (attr.localName !== '-moz-math-font-style') {\n      newEl.setAttributeNS(attr.namespaceURI, attr.nodeName, attr.value);\n    }\n  });\n  // set the copied element's new id\n  newEl.removeAttribute('id');\n  newEl.id = getNextId();\n\n  // Opera's \"d\" value needs to be reset for Opera/Win/non-EN\n  // Also needed for webkit (else does not keep curved segments on clone)\n  if (isWebkit() && el.nodeName === 'path') {\n    const fixedD = convertPath(el);\n    newEl.setAttribute('d', fixedD);\n  }\n\n  // now create copies of all children\n  $.each(el.childNodes, function (i, child) {\n    switch (child.nodeType) {\n    case 1: // element node\n      newEl.append(copyElem(child, getNextId));\n      break;\n    case 3: // text node\n      newEl.textContent = child.nodeValue;\n      break;\n    default:\n      break;\n    }\n  });\n\n  if ($(el).data('gsvg')) {\n    $(newEl).data('gsvg', newEl.firstChild);\n  } else if ($(el).data('symbol')) {\n    const ref = $(el).data('symbol');\n    $(newEl).data('ref', ref).data('symbol', ref);\n  } else if (newEl.tagName === 'image') {\n    preventClickDefault(newEl);\n  }\n\n  return newEl;\n};\n\n/**\n* Overwrite methods for unit testing.\n* @function module:utilities.mock\n* @returns {undefined}\n*/\nexport const mock = ({\n  getHref: getHrefUser, setHref: setHrefUser, getRotationAngle: getRotationAngleUser\n}) => {\n  getHref = getHrefUser;\n  setHref = setHrefUser;\n  getRotationAngle = getRotationAngleUser;\n};\n","/* globals jQuery */\n/**\n * Adds context menu functionality\n * @module contextmenu\n * @license Apache-2.0\n * @author Adam Bender\n */\n// Dependencies:\n// 1) jQuery (for dom injection of context menus)\n\nconst $ = jQuery;\n\nlet contextMenuExtensions = {};\n\n/**\n * Signature depends on what the user adds; in the case of our uses with\n * SVGEditor, no parameters are passed nor anything expected for a return.\n * @callback module:contextmenu.MenuItemAction\n*/\n\n/**\n* @typedef {PlainObject} module:contextmenu.MenuItem\n* @property {string} id\n* @property {string} label\n* @property {module:contextmenu.MenuItemAction} action\n*/\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {boolean}\n*/\nconst menuItemIsValid = function (menuItem) {\n  return menuItem && menuItem.id && menuItem.label && menuItem.action && typeof menuItem.action === 'function';\n};\n\n/**\n* @function module:contextmenu.add\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {undefined}\n*/\nexport const add = function (menuItem) {\n  // menuItem: {id, label, shortcut, action}\n  if (!menuItemIsValid(menuItem)) {\n    console.error('Menu items must be defined and have at least properties: id, label, action, where action must be a function');\n    return;\n  }\n  if (menuItem.id in contextMenuExtensions) {\n    console.error('Cannot add extension \"' + menuItem.id + '\", an extension by that name already exists\"');\n    return;\n  }\n  // Register menuItem action, see below for deferred menu dom injection\n  console.log('Registed contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}');\n  contextMenuExtensions[menuItem.id] = menuItem;\n  // TODO: Need to consider how to handle custom enable/disable behavior\n};\n\n/**\n* @function module:contextmenu.hasCustomHandler\n* @param {string} handlerKey\n* @returns {boolean}\n*/\nexport const hasCustomHandler = function (handlerKey) {\n  return Boolean(contextMenuExtensions[handlerKey]);\n};\n\n/**\n* @function module:contextmenu.getCustomHandler\n* @param {string} handlerKey\n* @returns {module:contextmenu.MenuItemAction}\n*/\nexport const getCustomHandler = function (handlerKey) {\n  return contextMenuExtensions[handlerKey].action;\n};\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {undefined}\n*/\nconst injectExtendedContextMenuItemIntoDom = function (menuItem) {\n  if (!Object.keys(contextMenuExtensions).length) {\n    // all menuItems appear at the bottom of the menu in their own container.\n    // if this is the first extension menu we need to add the separator.\n    $('#cmenu_canvas').append(\"<li class='separator'>\");\n  }\n  const shortcut = menuItem.shortcut || '';\n  $('#cmenu_canvas').append(\"<li class='disabled'><a href='#\" + menuItem.id + \"'>\" +\n    menuItem.label + \"<span class='shortcut'>\" +\n    shortcut + '</span></a></li>');\n};\n\n/**\n* @function module:contextmenu.injectExtendedContextMenuItemsIntoDom\n* @returns {undefined}\n*/\nexport const injectExtendedContextMenuItemsIntoDom = function () {\n  for (const menuItem in contextMenuExtensions) {\n    injectExtendedContextMenuItemIntoDom(contextMenuExtensions[menuItem]);\n  }\n};\n/**\n* @function module:contextmenu.resetCustomMenus\n* @returns {undefined}\n*/\nexport const resetCustomMenus = function () { contextMenuExtensions = {}; };\n","// MIT License\n// From: https://github.com/uupaa/dynamic-import-polyfill/blob/master/importModule.js\n\n/**\n * @module importModule\n */\n\nfunction toAbsoluteURL (url) {\n  const a = document.createElement('a');\n  a.setAttribute('href', url); // <a href=\"hoge.html\">\n  return a.cloneNode(false).href; // -> \"http://example.com/hoge.html\"\n}\n\nfunction addScriptAtts (script, atts) {\n  ['id', 'class', 'type'].forEach((prop) => {\n    if (prop in atts) {\n      script[prop] = atts[prop];\n    }\n  });\n}\n\n// Additions by Brett\n/**\n* @typedef {PlainObject} module:importModule.ImportConfig\n* @property {string} global The variable name to set on `window` (when not using the modular version)\n* @property {boolean} [returnDefault=false]\n*/\n/**\n* @function module:importModule.importSetGlobalDefault\n* @param {string} url\n* @param {module:importModule.ImportConfig} config\n* @returns {*} The return depends on the export of the targeted module.\n*/\nexport async function importSetGlobalDefault (url, config) {\n  return importSetGlobal(url, {...config, returnDefault: true});\n}\n/**\n* @function module:importModule.importSetGlobal\n* @param {string} url\n* @param {module:importModule.ImportConfig} config\n* @returns {ArbitraryModule|*} The return depends on the export of the targeted module.\n*/\nexport async function importSetGlobal (url, {global, returnDefault}) {\n  // Todo: Replace calls to this function with `import()` when supported\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (modularVersion) {\n    return importModule(url, undefined, {returnDefault});\n  }\n  await importScript(url);\n  return window[global];\n}\n// Addition by Brett\nexport function importScript (url, atts = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importScript(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => {\n    const script = document.createElement('script');\n    const destructor = () => {\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      script.src = '';\n    };\n    script.defer = 'defer';\n    addScriptAtts(script, atts);\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve();\n      destructor();\n    };\n    script.src = url;\n\n    document.head.append(script);\n  });\n}\n\nexport function importModule (url, atts = {}, {returnDefault = false} = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importModule(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => {\n    const vector = '$importModule$' + Math.random().toString(32).slice(2);\n    const script = document.createElement('script');\n    const destructor = () => {\n      delete window[vector];\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      URL.revokeObjectURL(script.src);\n      script.src = '';\n    };\n    addScriptAtts(script, atts);\n    script.defer = 'defer';\n    script.type = 'module';\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve(window[vector]);\n      destructor();\n    };\n    const absURL = toAbsoluteURL(url);\n    const loader = `import * as m from '${absURL.replace(/'/g, \"\\\\'\")}'; window.${vector} = ${returnDefault ? 'm.default || ' : ''}m;`; // export Module\n    const blob = new Blob([loader], {type: 'text/javascript'});\n    script.src = URL.createObjectURL(blob);\n\n    document.head.append(script);\n  });\n}\n\nexport default importModule;\n","/* globals jQuery */\n/**\n * Provides tools for the layer concept\n * @module layer\n * @license MIT\n *\n * @copyright 2011 Jeff Schiller, 2016 Flint O'Brien\n */\n\nimport {NS} from './namespaces.js';\nimport {toXml, walkTree} from './utilities.js';\n\nconst $ = jQuery;\n\n/**\n * This class encapsulates the concept of a layer in the drawing. It can be constructed with\n * an existing group element or, with three parameters, will create a new layer group element.\n *\n * @example\n * new Layer('name', group);          // Use the existing group for this layer.\n * new Layer('name', group, svgElem); // Create a new group and add it to the DOM after group.\n * new Layer('name', null, svgElem);  // Create a new group and add it to the DOM as the last layer.\n * @memberof module:layer\n */\nclass Layer {\n  /**\n  * @param {string} name - Layer name\n  * @param {SVGGElement|null} group - An existing SVG group element or null.\n  *     If group and no svgElem, use group for this layer.\n  *     If group and svgElem, create a new group element and insert it in the DOM after group.\n  *     If no group and svgElem, create a new group element and insert it in the DOM as the last layer.\n  * @param {SVGGElement=} svgElem - The SVG DOM element. If defined, use this to add\n  *     a new layer to the document.\n  */\n  constructor (name, group, svgElem) {\n    this.name_ = name;\n    this.group_ = svgElem ? null : group;\n\n    if (svgElem) {\n      // Create a group element with title and add it to the DOM.\n      const svgdoc = svgElem.ownerDocument;\n      this.group_ = svgdoc.createElementNS(NS.SVG, 'g');\n      const layerTitle = svgdoc.createElementNS(NS.SVG, 'title');\n      layerTitle.textContent = name;\n      this.group_.append(layerTitle);\n      if (group) {\n        $(group).after(this.group_);\n      } else {\n        svgElem.append(this.group_);\n      }\n    }\n\n    addLayerClass(this.group_);\n    walkTree(this.group_, function (e) {\n      e.setAttribute('style', 'pointer-events:inherit');\n    });\n\n    this.group_.setAttribute('style', svgElem ? 'pointer-events:all' : 'pointer-events:none');\n  }\n\n  /**\n   * Get the layer's name.\n   * @returns {string} The layer name\n   */\n  getName () {\n    return this.name_;\n  }\n\n  /**\n   * Get the group element for this layer.\n   * @returns {SVGGElement} The layer SVG group\n   */\n  getGroup () {\n    return this.group_;\n  }\n\n  /**\n   * Active this layer so it takes pointer events.\n   * @returns {undefined}\n   */\n  activate () {\n    this.group_.setAttribute('style', 'pointer-events:all');\n  }\n\n  /**\n   * Deactive this layer so it does NOT take pointer events.\n   * @returns {undefined}\n   */\n  deactivate () {\n    this.group_.setAttribute('style', 'pointer-events:none');\n  }\n\n  /**\n   * Set this layer visible or hidden based on 'visible' parameter.\n   * @param {boolean} visible - If true, make visible; otherwise, hide it.\n   * @returns {undefined}\n   */\n  setVisible (visible) {\n    const expected = visible === undefined || visible ? 'inline' : 'none';\n    const oldDisplay = this.group_.getAttribute('display');\n    if (oldDisplay !== expected) {\n      this.group_.setAttribute('display', expected);\n    }\n  }\n\n  /**\n   * Is this layer visible?\n   * @returns {boolean} True if visible.\n   */\n  isVisible () {\n    return this.group_.getAttribute('display') !== 'none';\n  }\n\n  /**\n   * Get layer opacity.\n   * @returns {Float} Opacity value.\n   */\n  getOpacity () {\n    const opacity = this.group_.getAttribute('opacity');\n    if (opacity === null || opacity === undefined) {\n      return 1;\n    }\n    return parseFloat(opacity);\n  }\n\n  /**\n   * Sets the opacity of this layer. If opacity is not a value between 0.0 and 1.0,\n   * nothing happens.\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n   */\n  setOpacity (opacity) {\n    if (typeof opacity === 'number' && opacity >= 0.0 && opacity <= 1.0) {\n      this.group_.setAttribute('opacity', opacity);\n    }\n  }\n\n  /**\n   * Append children to this layer.\n   * @param {SVGGElement} children - The children to append to this layer.\n   * @returns {undefined}\n   */\n  appendChildren (children) {\n    for (let i = 0; i < children.length; ++i) {\n      this.group_.append(children[i]);\n    }\n  }\n\n  /**\n  * @returns {SVGTitleElement|null}\n  */\n  getTitleElement () {\n    const len = this.group_.childNodes.length;\n    for (let i = 0; i < len; ++i) {\n      const child = this.group_.childNodes.item(i);\n      if (child && child.tagName === 'title') {\n        return child;\n      }\n    }\n    return null;\n  }\n\n  /**\n   * Set the name of this layer.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setName (name, hrService) {\n    const previousName = this.name_;\n    name = toXml(name);\n    // now change the underlying title element contents\n    const title = this.getTitleElement();\n    if (title) {\n      $(title).empty();\n      title.textContent = name;\n      this.name_ = name;\n      if (hrService) {\n        hrService.changeElement(title, {'#text': previousName});\n      }\n      return this.name_;\n    }\n    return null;\n  }\n\n  /**\n   * Remove this layer's group from the DOM. No more functions on group can be called after this.\n   * @param {SVGGElement} children - The children to append to this layer.\n   * @returns {SVGGElement} The layer SVG group that was just removed.\n   */\n  removeGroup () {\n    const parent = this.group_.parentNode;\n    const group = parent.removeChild(this.group_);\n    this.group_ = undefined;\n    return group;\n  }\n}\n/**\n * @property {string} CLASS_NAME - class attribute assigned to all layer groups.\n */\nLayer.CLASS_NAME = 'layer';\n\n/**\n * @property {RegExp} CLASS_REGEX - Used to test presence of class Layer.CLASS_NAME\n */\nLayer.CLASS_REGEX = new RegExp('(\\\\s|^)' + Layer.CLASS_NAME + '(\\\\s|$)');\n\n/**\n * Add class `Layer.CLASS_NAME` to the element (usually `class='layer'`).\n *\n * @param {SVGGElement} elem - The SVG element to update\n * @returns {undefined}\n */\nfunction addLayerClass (elem) {\n  const classes = elem.getAttribute('class');\n  if (classes === null || classes === undefined || !classes.length) {\n    elem.setAttribute('class', Layer.CLASS_NAME);\n  } else if (!Layer.CLASS_REGEX.test(classes)) {\n    elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);\n  }\n}\n\nexport default Layer;\n","/**\n * HistoryRecordingService component of history\n * @module history\n * @license MIT\n * @copyright 2016 Flint O'Brien\n */\n\nimport {\n  BatchCommand, MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand\n} from './history.js';\n\n/**\n * History recording service.\n *\n * A self-contained service interface for recording history. Once injected, no other dependencies\n * or globals are required (example: UndoManager, command types, etc.). Easy to mock for unit tests.\n * Built on top of history classes in history.js.\n *\n * There is a simple start/end interface for batch commands.\n *\n * HistoryRecordingService.NO_HISTORY is a singleton that can be passed in to functions\n * that record history. This helps when the caller requires that no history be recorded.\n *\n * The following will record history: insert, batch, insert.\n * @example\n * hrService = new history.HistoryRecordingService(this.undoMgr);\n * hrService.insertElement(elem, text);         // add simple command to history.\n * hrService.startBatchCommand('create two elements');\n * hrService.changeElement(elem, attrs, text);  // add to batchCommand\n * hrService.changeElement(elem, attrs2, text); // add to batchCommand\n * hrService.endBatchCommand();                  // add batch command with two change commands to history.\n * hrService.insertElement(elem, text);         // add simple command to history.\n *\n * @example\n * // Note that all functions return this, so commands can be chained, like so:\n * hrService\n *   .startBatchCommand('create two elements')\n *   .insertElement(elem, text)\n *   .changeElement(elem, attrs, text)\n *   .endBatchCommand();\n *\n * @memberof module:history\n */\nclass HistoryRecordingService {\n  /**\n  * @param {history.UndoManager|null} undoManager - The undo manager.\n  *     A value of `null` is valid for cases where no history recording is required.\n  *     See singleton: {@link module:history.HistoryRecordingService.HistoryRecordingService.NO_HISTORY}\n  */\n  constructor (undoManager) {\n    this.undoManager_ = undoManager;\n    this.currentBatchCommand_ = null;\n    this.batchCommandStack_ = [];\n  }\n\n  /**\n   * Start a batch command so multiple commands can recorded as a single history command.\n   * Requires a corresponding call to endBatchCommand. Start and end commands can be nested.\n   *\n   * @param {string} text - Optional string describing the batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  startBatchCommand (text) {\n    if (!this.undoManager_) { return this; }\n    this.currentBatchCommand_ = new BatchCommand(text);\n    this.batchCommandStack_.push(this.currentBatchCommand_);\n    return this;\n  }\n\n  /**\n   * End a batch command and add it to the history or a parent batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  endBatchCommand () {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      const batchCommand = this.currentBatchCommand_;\n      this.batchCommandStack_.pop();\n      const {length} = this.batchCommandStack_;\n      this.currentBatchCommand_ = length ? this.batchCommandStack_[length - 1] : null;\n      this.addCommand_(batchCommand);\n    }\n    return this;\n  }\n\n  /**\n   * Add a `MoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was moved\n   * @param {Element} oldNextSibling - The element's next sibling before it was moved\n   * @param {Element} oldParent - The element's parent before it was moved\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  moveElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new MoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add an `InsertElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was added\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  insertElement (elem, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new InsertElementCommand(elem, text));\n    return this;\n  }\n\n  /**\n   * Add a `RemoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was removed\n   * @param {Element} oldNextSibling - The element's next sibling before it was removed\n   * @param {Element} oldParent - The element's parent before it was removed\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  removeElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new RemoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add a `ChangeElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was changed\n   * @param {module:history.CommandAttributes} attrs - An object with the attributes to be changed and the values they had *before* the change\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  changeElement (elem, attrs, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new ChangeElementCommand(elem, attrs, text));\n    return this;\n  }\n\n  /**\n   * Private function to add a command to the history or current batch command.\n   * @private\n   * @param {Command} cmd\n   * @returns {module:history.HistoryRecordingService}\n   */\n  addCommand_ (cmd) {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      this.currentBatchCommand_.addSubCommand(cmd);\n    } else {\n      this.undoManager_.addCommandToHistory(cmd);\n    }\n  }\n}\n/**\n * @memberof module:history.HistoryRecordingService\n * @property {module:history.HistoryRecordingService} NO_HISTORY - Singleton that can be passed to functions that record history, but the caller requires that no history be recorded.\n */\nHistoryRecordingService.NO_HISTORY = new HistoryRecordingService();\nexport default HistoryRecordingService;\n","/* globals jQuery */\n/**\n * Tools for drawing\n * @module draw\n * @license MIT\n * @copyright 2011 Jeff Schiller\n */\n\nimport Layer from './layer.js';\nimport HistoryRecordingService from './historyrecording.js';\n\nimport {NS} from './namespaces.js';\nimport {isOpera} from './browser.js';\nimport {\n  toXml, getElem,\n  copyElem as utilCopyElem\n} from './utilities.js';\nimport {\n  BatchCommand, RemoveElementCommand, MoveElementCommand, ChangeElementCommand\n} from './history.js';\n\nconst $ = jQuery;\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use'.split(',');\n\nconst RandomizeModes = {\n  LET_DOCUMENT_DECIDE: 0,\n  ALWAYS_RANDOMIZE: 1,\n  NEVER_RANDOMIZE: 2\n};\nlet randIds = RandomizeModes.LET_DOCUMENT_DECIDE;\n// Array with current disabled elements (for in-group editing)\nlet disabledElems = [];\n\n/**\n * Get a HistoryRecordingService.\n * @param {module:history.HistoryRecordingService} [hrService] - if exists, return it instead of creating a new service.\n * @returns {module:history.HistoryRecordingService}\n */\nfunction historyRecordingService (hrService) {\n  return hrService || new HistoryRecordingService(canvas_.undoMgr);\n}\n\n/**\n * Find the layer name in a group element.\n * @param {Element} group The group element to search in.\n * @returns {string} The layer name or empty string.\n */\nfunction findLayerNameInGroup (group) {\n  return $('title', group).text() ||\n    (isOpera() && group.querySelectorAll\n      // Hack for Opera 10.60\n      ? $(group.querySelectorAll('title')).text()\n      : '');\n}\n\n/**\n * Given a set of names, return a new unique name.\n * @param {string[]} existingLayerNames - Existing layer names.\n * @returns {string} - The new name.\n */\nfunction getNewLayerName (existingLayerNames) {\n  let i = 1;\n  // TODO(codedread): What about internationalization of \"Layer\"?\n  while (existingLayerNames.includes(('Layer ' + i))) { i++; }\n  return 'Layer ' + i;\n}\n\n/**\n * This class encapsulates the concept of a SVG-edit drawing.\n */\nexport class Drawing {\n  /**\n  * @param {SVGSVGElement} svgElem - The SVG DOM Element that this JS object\n  *     encapsulates.  If the svgElem has a se:nonce attribute on it, then\n  *     IDs will use the nonce as they are generated.\n  * @param {string} [optIdPrefix=svg_] - The ID prefix to use.\n  * @throws {Error} If not initialized with an SVG element\n  */\n  constructor (svgElem, optIdPrefix) {\n    if (!svgElem || !svgElem.tagName || !svgElem.namespaceURI ||\n      svgElem.tagName !== 'svg' || svgElem.namespaceURI !== NS.SVG) {\n      throw new Error('Error: svgedit.draw.Drawing instance initialized without a <svg> element');\n    }\n\n    /**\n    * The SVG DOM Element that represents this drawing.\n    * @type {SVGSVGElement}\n    */\n    this.svgElem_ = svgElem;\n\n    /**\n    * The latest object number used in this drawing.\n    * @type {Integer}\n    */\n    this.obj_num = 0;\n\n    /**\n    * The prefix to prepend to each element id in the drawing.\n    * @type {string}\n    */\n    this.idPrefix = optIdPrefix || 'svg_';\n\n    /**\n    * An array of released element ids to immediately reuse.\n    * @type {Integer[]}\n    */\n    this.releasedNums = [];\n\n    /**\n    * The z-ordered array of Layer objects. Each layer has a name\n    * and group element.\n    * The first layer is the one at the bottom of the rendering.\n    * @type {Layer[]}\n    */\n    this.all_layers = [];\n\n    /**\n    * Map of all_layers by name.\n    *\n    * Note: Layers are ordered, but referenced externally by name; so, we need both container\n    * types depending on which function is called (i.e. all_layers and layer_map).\n    *\n    * @type {PlainObject.<string, Layer>}\n    */\n    this.layer_map = {};\n\n    /**\n    * The current layer being used.\n    * @type {Layer}\n    */\n    this.current_layer = null;\n\n    /**\n    * The nonce to use to uniquely identify elements across drawings.\n    * @type {!String}\n    */\n    this.nonce_ = '';\n    const n = this.svgElem_.getAttributeNS(NS.SE, 'nonce');\n    // If already set in the DOM, use the nonce throughout the document\n    // else, if randomizeIds(true) has been called, create and set the nonce.\n    if (!!n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {\n      this.nonce_ = n;\n    } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {\n      this.setNonce(Math.floor(Math.random() * 100001));\n    }\n  }\n\n  /**\n   * @param {string} id Element ID to retrieve\n   * @returns {Element} SVG element within the root SVGSVGElement\n  */\n  getElem_ (id) {\n    if (this.svgElem_.querySelector) {\n      // querySelector lookup\n      return this.svgElem_.querySelector('#' + id);\n    }\n    // jQuery lookup: twice as slow as xpath in FF\n    return $(this.svgElem_).find('[id=' + id + ']')[0];\n  }\n\n  /**\n   * @returns {SVGSVGElement}\n   */\n  getSvgElem () {\n    return this.svgElem_;\n  }\n\n  /**\n   * @returns {!(string|Integer)} The previously set nonce\n   */\n  getNonce () {\n    return this.nonce_;\n  }\n\n  /**\n   * @param {!(string|Integer)} n The nonce to set\n   * @returns {undefined}\n   */\n  setNonce (n) {\n    this.svgElem_.setAttributeNS(NS.XMLNS, 'xmlns:se', NS.SE);\n    this.svgElem_.setAttributeNS(NS.SE, 'se:nonce', n);\n    this.nonce_ = n;\n  }\n\n  /**\n   * Clears any previously set nonce.\n   * @returns {undefined}\n   */\n  clearNonce () {\n    // We deliberately leave any se:nonce attributes alone,\n    // we just don't use it to randomize ids.\n    this.nonce_ = '';\n  }\n\n  /**\n   * Returns the latest object id as a string.\n   * @returns {string} The latest object Id.\n   */\n  getId () {\n    return this.nonce_\n      ? this.idPrefix + this.nonce_ + '_' + this.obj_num\n      : this.idPrefix + this.obj_num;\n  }\n\n  /**\n   * Returns the next object Id as a string.\n   * @returns {string} The next object Id to use.\n   */\n  getNextId () {\n    const oldObjNum = this.obj_num;\n    let restoreOldObjNum = false;\n\n    // If there are any released numbers in the release stack,\n    // use the last one instead of the next obj_num.\n    // We need to temporarily use obj_num as that is what getId() depends on.\n    if (this.releasedNums.length > 0) {\n      this.obj_num = this.releasedNums.pop();\n      restoreOldObjNum = true;\n    } else {\n      // If we are not using a released id, then increment the obj_num.\n      this.obj_num++;\n    }\n\n    // Ensure the ID does not exist.\n    let id = this.getId();\n    while (this.getElem_(id)) {\n      if (restoreOldObjNum) {\n        this.obj_num = oldObjNum;\n        restoreOldObjNum = false;\n      }\n      this.obj_num++;\n      id = this.getId();\n    }\n    // Restore the old object number if required.\n    if (restoreOldObjNum) {\n      this.obj_num = oldObjNum;\n    }\n    return id;\n  }\n\n  /**\n   * Releases the object Id, letting it be used as the next id in getNextId().\n   * This method DOES NOT remove any elements from the DOM, it is expected\n   * that client code will do this.\n   * @param {string} id - The id to release.\n   * @returns {boolean} True if the id was valid to be released, false otherwise.\n  */\n  releaseId (id) {\n    // confirm if this is a valid id for this Document, else return false\n    const front = this.idPrefix + (this.nonce_ ? this.nonce_ + '_' : '');\n    if (typeof id !== 'string' || !id.startsWith(front)) {\n      return false;\n    }\n    // extract the obj_num of this id\n    const num = parseInt(id.substr(front.length), 10);\n\n    // if we didn't get a positive number or we already released this number\n    // then return false.\n    if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {\n      return false;\n    }\n\n    // push the released number into the released queue\n    this.releasedNums.push(num);\n\n    return true;\n  }\n\n  /**\n   * Returns the number of layers in the current drawing.\n   * @returns {Integer} The number of layers in the current drawing.\n  */\n  getNumLayers () {\n    return this.all_layers.length;\n  }\n\n  /**\n   * Check if layer with given name already exists.\n   * @param {string} name - The layer name to check\n   * @returns {boolean}\n  */\n  hasLayer (name) {\n    return this.layer_map[name] !== undefined;\n  }\n\n  /**\n   * Returns the name of the ith layer. If the index is out of range, an empty string is returned.\n   * @param {Integer} i - The zero-based index of the layer you are querying.\n   * @returns {string} The name of the ith layer (or the empty string if none found)\n  */\n  getLayerName (i) {\n    return i >= 0 && i < this.getNumLayers() ? this.all_layers[i].getName() : '';\n  }\n\n  /**\n   * @returns {SVGGElement|null} The SVGGElement representing the current layer.\n   */\n  getCurrentLayer () {\n    return this.current_layer ? this.current_layer.getGroup() : null;\n  }\n\n  /**\n   * Get a layer by name.\n   * @param {string} name\n   * @returns {SVGGElement} The SVGGElement representing the named layer or null.\n   */\n  getLayerByName (name) {\n    const layer = this.layer_map[name];\n    return layer ? layer.getGroup() : null;\n  }\n\n  /**\n   * Returns the name of the currently selected layer. If an error occurs, an empty string\n   * is returned.\n   * @returns {string} The name of the currently active layer (or the empty string if none found).\n  */\n  getCurrentLayerName () {\n    return this.current_layer ? this.current_layer.getName() : '';\n  }\n\n  /**\n   * Set the current layer's name.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setCurrentLayerName (name, hrService) {\n    let finalName = null;\n    if (this.current_layer) {\n      const oldName = this.current_layer.getName();\n      finalName = this.current_layer.setName(name, hrService);\n      if (finalName) {\n        delete this.layer_map[oldName];\n        this.layer_map[finalName] = this.current_layer;\n      }\n    }\n    return finalName;\n  }\n\n  /**\n   * Set the current layer's position.\n   * @param {Integer} newpos - The zero-based index of the new position of the layer. Range should be 0 to layers-1\n   * @returns {{title: SVGGElement, previousName: string}|null} If the name was changed, returns {title:SVGGElement, previousName:string}; otherwise null.\n   */\n  setCurrentLayerPosition (newpos) {\n    const layerCount = this.getNumLayers();\n    if (!this.current_layer || newpos < 0 || newpos >= layerCount) {\n      return null;\n    }\n\n    let oldpos;\n    for (oldpos = 0; oldpos < layerCount; ++oldpos) {\n      if (this.all_layers[oldpos] === this.current_layer) { break; }\n    }\n    // some unknown error condition (current_layer not in all_layers)\n    if (oldpos === layerCount) { return null; }\n\n    if (oldpos !== newpos) {\n      // if our new position is below us, we need to insert before the node after newpos\n      const currentGroup = this.current_layer.getGroup();\n      const oldNextSibling = currentGroup.nextSibling;\n\n      let refGroup = null;\n      if (newpos > oldpos) {\n        if (newpos < layerCount - 1) {\n          refGroup = this.all_layers[newpos + 1].getGroup();\n        }\n      // if our new position is above us, we need to insert before the node at newpos\n      } else {\n        refGroup = this.all_layers[newpos].getGroup();\n      }\n      this.svgElem_.insertBefore(currentGroup, refGroup); // Ok to replace with `refGroup.before(currentGroup);`?\n\n      this.identifyLayers();\n      this.setCurrentLayer(this.getLayerName(newpos));\n\n      return {\n        currentGroup,\n        oldNextSibling\n      };\n    }\n    return null;\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeLayer (hrService) {\n    const currentGroup = this.current_layer.getGroup();\n    const prevGroup = $(currentGroup).prev()[0];\n    if (!prevGroup) { return; }\n\n    hrService.startBatchCommand('Merge Layer');\n\n    const layerNextSibling = currentGroup.nextSibling;\n    hrService.removeElement(currentGroup, layerNextSibling, this.svgElem_);\n\n    while (currentGroup.firstChild) {\n      const child = currentGroup.firstChild;\n      if (child.localName === 'title') {\n        hrService.removeElement(child, child.nextSibling, currentGroup);\n        child.remove();\n        continue;\n      }\n      const oldNextSibling = child.nextSibling;\n      prevGroup.append(child);\n      hrService.moveElement(child, oldNextSibling, currentGroup);\n    }\n\n    // Remove current layer's group\n    this.current_layer.removeGroup();\n    // Remove the current layer and set the previous layer as the new current layer\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index > 0) {\n      const name = this.current_layer.getName();\n      this.current_layer = this.all_layers[index - 1];\n      this.all_layers.splice(index, 1);\n      delete this.layer_map[name];\n    }\n\n    hrService.endBatchCommand();\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeAllLayers (hrService) {\n    // Set the current layer to the last layer.\n    this.current_layer = this.all_layers[this.all_layers.length - 1];\n\n    hrService.startBatchCommand('Merge all Layers');\n    while (this.all_layers.length > 1) {\n      this.mergeLayer(hrService);\n    }\n    hrService.endBatchCommand();\n  }\n\n  /**\n   * Sets the current layer. If the name is not a valid layer name, then this\n   * function returns `false`. Otherwise it returns `true`. This is not an\n   * undo-able action.\n   * @param {string} name - The name of the layer you want to switch to.\n   * @returns {boolean} `true` if the current layer was switched, otherwise `false`\n   */\n  setCurrentLayer (name) {\n    const layer = this.layer_map[name];\n    if (layer) {\n      if (this.current_layer) {\n        this.current_layer.deactivate();\n      }\n      this.current_layer = layer;\n      this.current_layer.activate();\n      return true;\n    }\n    return false;\n  }\n\n  /**\n   * Deletes the current layer from the drawing and then clears the selection.\n   * This function then calls the 'changed' handler.  This is an undoable action.\n   * @todo Does this actually call the 'changed' handler?\n   * @returns {SVGGElement} The SVGGElement of the layer removed or null.\n   */\n  deleteCurrentLayer () {\n    if (this.current_layer && this.getNumLayers() > 1) {\n      const oldLayerGroup = this.current_layer.removeGroup();\n      this.identifyLayers();\n      return oldLayerGroup;\n    }\n    return null;\n  }\n\n  /**\n   * Updates layer system and sets the current layer to the\n   * top-most layer (last `<g>` child of this drawing).\n   * @returns {undefined}\n  */\n  identifyLayers () {\n    this.all_layers = [];\n    this.layer_map = {};\n    const numchildren = this.svgElem_.childNodes.length;\n    // loop through all children of SVG element\n    const orphans = [], layernames = [];\n    let layer = null;\n    let childgroups = false;\n    for (let i = 0; i < numchildren; ++i) {\n      const child = this.svgElem_.childNodes.item(i);\n      // for each g, find its layer name\n      if (child && child.nodeType === 1) {\n        if (child.tagName === 'g') {\n          childgroups = true;\n          const name = findLayerNameInGroup(child);\n          if (name) {\n            layernames.push(name);\n            layer = new Layer(name, child);\n            this.all_layers.push(layer);\n            this.layer_map[name] = layer;\n          } else {\n            // if group did not have a name, it is an orphan\n            orphans.push(child);\n          }\n        } else if (visElems.includes(child.nodeName)) {\n          // Child is \"visible\" (i.e. not a <title> or <defs> element), so it is an orphan\n          orphans.push(child);\n        }\n      }\n    }\n\n    // If orphans or no layers found, create a new layer and add all the orphans to it\n    if (orphans.length > 0 || !childgroups) {\n      layer = new Layer(getNewLayerName(layernames), null, this.svgElem_);\n      layer.appendChildren(orphans);\n      this.all_layers.push(layer);\n      this.layer_map[name] = layer;\n    } else {\n      layer.activate();\n    }\n    this.current_layer = layer;\n  }\n\n  /**\n   * Creates a new top-level layer in the drawing with the given name and\n   * makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  createLayer (name, hrService) {\n    if (this.current_layer) {\n      this.current_layer.deactivate();\n    }\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Crate new layer and add to DOM as last layer\n    const layer = new Layer(name, null, this.svgElem_);\n    // Like to assume hrService exists, but this is backwards compatible with old version of createLayer.\n    if (hrService) {\n      hrService.startBatchCommand('Create Layer');\n      hrService.insertElement(layer.getGroup());\n      hrService.endBatchCommand();\n    }\n\n    this.all_layers.push(layer);\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return layer.getGroup();\n  }\n\n  /**\n   * Creates a copy of the current layer with the given name and makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  cloneLayer (name, hrService) {\n    if (!this.current_layer) { return null; }\n    this.current_layer.deactivate();\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Create new group and add to DOM just after current_layer\n    const currentGroup = this.current_layer.getGroup();\n    const layer = new Layer(name, currentGroup, this.svgElem_);\n    const group = layer.getGroup();\n\n    // Clone children\n    const children = currentGroup.childNodes;\n    for (let index = 0; index < children.length; index++) {\n      const ch = children[index];\n      if (ch.localName === 'title') { continue; }\n      group.append(this.copyElem(ch));\n    }\n\n    if (hrService) {\n      hrService.startBatchCommand('Duplicate Layer');\n      hrService.insertElement(group);\n      hrService.endBatchCommand();\n    }\n\n    // Update layer containers and current_layer.\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index >= 0) {\n      this.all_layers.splice(index + 1, 0, layer);\n    } else {\n      this.all_layers.push(layer);\n    }\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return group;\n  }\n\n  /**\n   * Returns whether the layer is visible.  If the layer name is not valid,\n   * then this function returns `false`.\n   * @param {string} layerName - The name of the layer which you want to query.\n   * @returns {boolean} The visibility state of the layer, or `false` if the layer name was invalid.\n  */\n  getLayerVisibility (layerName) {\n    const layer = this.layer_map[layerName];\n    return layer ? layer.isVisible() : false;\n  }\n\n  /**\n   * Sets the visibility of the layer. If the layer name is not valid, this\n   * function returns `null`, otherwise it returns the `SVGElement` representing\n   * the layer. This is an undo-able action.\n   * @param {string} layerName - The name of the layer to change the visibility\n   * @param {boolean} bVisible - Whether the layer should be visible\n   * @returns {?SVGGElement} The SVGGElement representing the layer if the\n   *   `layerName` was valid, otherwise `null`.\n  */\n  setLayerVisibility (layerName, bVisible) {\n    if (typeof bVisible !== 'boolean') {\n      return null;\n    }\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    layer.setVisible(bVisible);\n    return layer.getGroup();\n  }\n\n  /**\n   * Returns the opacity of the given layer.  If the input name is not a layer, `null` is returned.\n   * @param {string} layerName - name of the layer on which to get the opacity\n   * @returns {?Float} The opacity value of the given layer.  This will be a value between 0.0 and 1.0, or `null`\n   * if `layerName` is not a valid layer\n  */\n  getLayerOpacity (layerName) {\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    return layer.getOpacity();\n  }\n\n  /**\n   * Sets the opacity of the given layer.  If the input name is not a layer,\n   * nothing happens. If opacity is not a value between 0.0 and 1.0, then\n   * nothing happens.\n   * NOTE: this function exists solely to apply a highlighting/de-emphasis\n   * effect to a layer. When it is possible for a user to affect the opacity\n   * of a layer, we will need to allow this function to produce an undo-able\n   * action.\n   * @param {string} layerName - Name of the layer on which to set the opacity\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n  */\n  setLayerOpacity (layerName, opacity) {\n    if (typeof opacity !== 'number' || opacity < 0.0 || opacity > 1.0) {\n      return;\n    }\n    const layer = this.layer_map[layerName];\n    if (layer) {\n      layer.setOpacity(opacity);\n    }\n  }\n\n  /**\n   * Create a clone of an element, updating its ID and its children's IDs when needed.\n   * @param {Element} el - DOM element to clone\n   * @returns {Element}\n   */\n  copyElem (el) {\n    const self = this;\n    const getNextIdClosure = function () { return self.getNextId(); };\n    return utilCopyElem(el, getNextIdClosure);\n  }\n}\n\n/**\n * Called to ensure that drawings will or will not have randomized ids.\n * The currentDrawing will have its nonce set if it doesn't already.\n * @function module:draw.randomizeIds\n * @param {boolean} enableRandomization - flag indicating if documents should have randomized ids\n * @param {draw.Drawing} currentDrawing\n * @returns {undefined}\n */\nexport const randomizeIds = function (enableRandomization, currentDrawing) {\n  randIds = enableRandomization === false\n    ? RandomizeModes.NEVER_RANDOMIZE\n    : RandomizeModes.ALWAYS_RANDOMIZE;\n\n  if (randIds === RandomizeModes.ALWAYS_RANDOMIZE && !currentDrawing.getNonce()) {\n    currentDrawing.setNonce(Math.floor(Math.random() * 100001));\n  } else if (randIds === RandomizeModes.NEVER_RANDOMIZE && currentDrawing.getNonce()) {\n    currentDrawing.clearNonce();\n  }\n};\n\n// Layer API Functions\n\n/**\n* Group: Layers\n*/\n\n/**\n * @see {@link https://api.jquery.com/jQuery.data/}\n * @name external:jQuery.data\n */\n\n/**\n * @interface module:draw.DrawCanvasInit\n * @property {module:path.pathActions} pathActions\n * @property {external:jQuery.data} elData\n * @property {module:history.UndoManager} undoMgr\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentGroup\n * @returns {Element}\n */\n/**\n * @function module:draw.DrawCanvasInit#setCurrentGroup\n * @param {Element} cg\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentDrawing\n * @returns {module:draw.Drawing}\n */\n/**\n * @function module:draw.DrawCanvasInit#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * Run the callback function associated with the given event\n * @function module:draw.DrawCanvasInit#call\n * @param {\"changed\"|\"contextset\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset} arg - Argument to pass through to the callback\n * function. If the event is \"changed\", a (single-item) array of `Element`s is\n * passed. If the event is \"contextset\", the arg is `null` or `Element`.\n * @returns {undefined}\n */\n/**\n * @function module:draw.DrawCanvasInit#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#changeSVGContent\n * @returns {undefined}\n */\n\nlet canvas_;\n/**\n* @function module:draw.init\n* @param {module:draw.DrawCanvasInit} canvas\n* @returns {undefined}\n*/\nexport const init = function (canvas) {\n  canvas_ = canvas;\n};\n\n/**\n* Updates layer system.\n* @function module:draw.identifyLayers\n* @returns {undefined}\n*/\nexport const identifyLayers = function () {\n  leaveContext();\n  canvas_.getCurrentDrawing().identifyLayers();\n};\n\n/**\n* Creates a new top-level layer in the drawing with the given name, sets the current layer\n* to it, and then clears the selection. This function then calls the 'changed' handler.\n* This is an undoable action.\n* @function module:draw.createLayer\n* @param {string} name - The given name\n* @param {module:history.HistoryRecordingService} hrService\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nexport const createLayer = function (name, hrService) {\n  const newLayer = canvas_.getCurrentDrawing().createLayer(\n    name,\n    historyRecordingService(hrService)\n  );\n  canvas_.clearSelection();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n * Creates a new top-level layer in the drawing with the given name, copies all the current layer's contents\n * to it, and then clears the selection. This function then calls the 'changed' handler.\n * This is an undoable action.\n * @function module:draw.cloneLayer\n * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n * @param {module:history.HistoryRecordingService} hrService - History recording service\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @returns {undefined}\n */\nexport const cloneLayer = function (name, hrService) {\n  // Clone the current layer and make the cloned layer the new current layer\n  const newLayer = canvas_.getCurrentDrawing().cloneLayer(name, historyRecordingService(hrService));\n\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n* Deletes the current layer from the drawing and then clears the selection. This function\n* then calls the 'changed' handler. This is an undoable action.\n* @function module:draw.deleteCurrentLayer\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} `true` if an old layer group was found to delete\n*/\nexport const deleteCurrentLayer = function () {\n  let currentLayer = canvas_.getCurrentDrawing().getCurrentLayer();\n  const {nextSibling} = currentLayer;\n  const parent = currentLayer.parentNode;\n  currentLayer = canvas_.getCurrentDrawing().deleteCurrentLayer();\n  if (currentLayer) {\n    const batchCmd = new BatchCommand('Delete Layer');\n    // store in our Undo History\n    batchCmd.addSubCommand(new RemoveElementCommand(currentLayer, nextSibling, parent));\n    canvas_.addCommandToHistory(batchCmd);\n    canvas_.clearSelection();\n    canvas_.call('changed', [parent]);\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the current layer. If the name is not a valid layer name, then this function returns\n* false. Otherwise it returns true. This is not an undo-able action.\n* @function module:draw.setCurrentLayer\n* @param {string} name - The name of the layer you want to switch to.\n* @returns {boolean} true if the current layer was switched, otherwise false\n*/\nexport const setCurrentLayer = function (name) {\n  const result = canvas_.getCurrentDrawing().setCurrentLayer(toXml(name));\n  if (result) {\n    canvas_.clearSelection();\n  }\n  return result;\n};\n\n/**\n* Renames the current layer. If the layer name is not valid (i.e. unique), then this function\n* does nothing and returns `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.renameCurrentLayer\n* @param {string} newName - the new name you want to give the current layer. This name must\n* be unique among all layer names.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Whether the rename succeeded\n*/\nexport const renameCurrentLayer = function (newName) {\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getCurrentLayer();\n  if (layer) {\n    const result = drawing.setCurrentLayerName(newName, historyRecordingService());\n    if (result) {\n      canvas_.call('changed', [layer]);\n      return true;\n    }\n  }\n  return false;\n};\n\n/**\n* Changes the position of the current layer to the new value. If the new index is not valid,\n* this function does nothing and returns false, otherwise it returns true. This is an\n* undo-able action.\n* @function module:draw.setCurrentLayerPosition\n* @param {Integer} newPos - The zero-based index of the new position of the layer. This should be between\n* 0 and (number of layers - 1)\n* @returns {boolean} `true` if the current layer position was changed, `false` otherwise.\n*/\nexport const setCurrentLayerPosition = function (newPos) {\n  const drawing = canvas_.getCurrentDrawing();\n  const result = drawing.setCurrentLayerPosition(newPos);\n  if (result) {\n    canvas_.addCommandToHistory(new MoveElementCommand(result.currentGroup, result.oldNextSibling, canvas_.getSVGContent()));\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the visibility of the layer. If the layer name is not valid, this function return\n* `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.setLayerVisibility\n* @param {string} layerName - The name of the layer to change the visibility\n* @param {boolean} bVisible - Whether the layer should be visible\n* @returns {boolean} true if the layer's visibility was set, false otherwise\n*/\nexport const setLayerVisibility = function (layerName, bVisible) {\n  const drawing = canvas_.getCurrentDrawing();\n  const prevVisibility = drawing.getLayerVisibility(layerName);\n  const layer = drawing.setLayerVisibility(layerName, bVisible);\n  if (layer) {\n    const oldDisplay = prevVisibility ? 'inline' : 'none';\n    canvas_.addCommandToHistory(new ChangeElementCommand(layer, {display: oldDisplay}, 'Layer Visibility'));\n  } else {\n    return false;\n  }\n\n  if (layer === drawing.getCurrentLayer()) {\n    canvas_.clearSelection();\n    canvas_.pathActions.clear();\n  }\n  // call('changed', [selected]);\n  return true;\n};\n\n/**\n* Moves the selected elements to layerName. If the name is not a valid layer name, then `false`\n* is returned. Otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.moveSelectedToLayer\n* @param {string} layerName - The name of the layer you want to which you want to move the selected elements\n* @returns {boolean} Whether the selected elements were moved to the layer.\n*/\nexport const moveSelectedToLayer = function (layerName) {\n  // find the layer\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getLayerByName(layerName);\n  if (!layer) { return false; }\n\n  const batchCmd = new BatchCommand('Move Elements to Layer');\n\n  // loop for each selected element and move it\n  const selElems = canvas_.getSelectedElements();\n  let i = selElems.length;\n  while (i--) {\n    const elem = selElems[i];\n    if (!elem) { continue; }\n    const oldNextSibling = elem.nextSibling;\n    // TODO: this is pretty brittle!\n    const oldLayer = elem.parentNode;\n    layer.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldLayer));\n  }\n\n  canvas_.addCommandToHistory(batchCmd);\n\n  return true;\n};\n\n/**\n* @function module:draw.mergeLayer\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeLayer = function (hrService) {\n  canvas_.getCurrentDrawing().mergeLayer(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* @function module:draw.mergeAllLayers\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeAllLayers = function (hrService) {\n  canvas_.getCurrentDrawing().mergeAllLayers(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* Return from a group context to the regular kind, make any previously\n* disabled elements enabled again.\n* @function module:draw.leaveContext\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const leaveContext = function () {\n  const len = disabledElems.length;\n  if (len) {\n    for (let i = 0; i < len; i++) {\n      const elem = disabledElems[i];\n      const orig = canvas_.elData(elem, 'orig_opac');\n      if (orig !== 1) {\n        elem.setAttribute('opacity', orig);\n      } else {\n        elem.removeAttribute('opacity');\n      }\n      elem.setAttribute('style', 'pointer-events: inherit');\n    }\n    disabledElems = [];\n    canvas_.clearSelection(true);\n    canvas_.call('contextset', null);\n  }\n  canvas_.setCurrentGroup(null);\n};\n\n/**\n* Set the current context (for in-group editing).\n* @function module:draw.setContext\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const setContext = function (elem) {\n  leaveContext();\n  if (typeof elem === 'string') {\n    elem = getElem(elem);\n  }\n\n  // Edit inside this group\n  canvas_.setCurrentGroup(elem);\n\n  // Disable other elements\n  $(elem).parentsUntil('#svgcontent').andSelf().siblings().each(function () {\n    const opac = this.getAttribute('opacity') || 1;\n    // Store the original's opacity\n    canvas_.elData(this, 'orig_opac', opac);\n    this.setAttribute('opacity', opac * 0.33);\n    this.setAttribute('style', 'pointer-events: none');\n    disabledElems.push(this);\n  });\n\n  canvas_.clearSelection();\n  canvas_.call('contextset', canvas_.getCurrentGroup());\n};\n\n/**\n* @memberof module:draw\n* @class Layer\n* @see {@link module:layer.Layer}\n*/\nexport {Layer};\n","/**\n * Tools for SVG sanitization\n * @module sanitize\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {getReverseNS, NS} from './namespaces.js';\nimport {isGecko} from './browser.js';\nimport {getHref, setHref, getUrlFromAttr} from './utilities.js';\n\nconst REVERSE_NS = getReverseNS();\n\n// this defines which elements and attributes that we support\nconst svgWhiteList_ = {\n  // SVG Elements\n  a: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'xlink:href', 'xlink:title'],\n  circle: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'r', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  clipPath: ['class', 'clipPathUnits', 'id'],\n  defs: [],\n  style: ['type'],\n  desc: [],\n  ellipse: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  feGaussianBlur: ['class', 'color-interpolation-filters', 'id', 'requiredFeatures', 'stdDeviation'],\n  filter: ['class', 'color-interpolation-filters', 'filterRes', 'filterUnits', 'height', 'id', 'primitiveUnits', 'requiredFeatures', 'width', 'x', 'xlink:href', 'y'],\n  foreignObject: ['class', 'font-size', 'height', 'id', 'opacity', 'requiredFeatures', 'style', 'transform', 'width', 'x', 'y'],\n  g: ['class', 'clip-path', 'clip-rule', 'id', 'display', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'font-family', 'font-size', 'font-style', 'font-weight', 'text-anchor'],\n  image: ['class', 'clip-path', 'clip-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'style', 'systemLanguage', 'transform', 'width', 'x', 'xlink:href', 'xlink:title', 'y'],\n  line: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'x1', 'x2', 'y1', 'y2'],\n  linearGradient: ['class', 'id', 'gradientTransform', 'gradientUnits', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'x1', 'x2', 'xlink:href', 'y1', 'y2'],\n  marker: ['id', 'class', 'markerHeight', 'markerUnits', 'markerWidth', 'orient', 'preserveAspectRatio', 'refX', 'refY', 'systemLanguage', 'viewBox'],\n  mask: ['class', 'height', 'id', 'maskContentUnits', 'maskUnits', 'width', 'x', 'y'],\n  metadata: ['class', 'id'],\n  path: ['class', 'clip-path', 'clip-rule', 'd', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  pattern: ['class', 'height', 'id', 'patternContentUnits', 'patternTransform', 'patternUnits', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xlink:href', 'y'],\n  polygon: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'class', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  polyline: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  radialGradient: ['class', 'cx', 'cy', 'fx', 'fy', 'gradientTransform', 'gradientUnits', 'id', 'r', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'xlink:href'],\n  rect: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'width', 'x', 'y'],\n  stop: ['class', 'id', 'offset', 'requiredFeatures', 'stop-color', 'stop-opacity', 'style', 'systemLanguage'],\n  svg: ['class', 'clip-path', 'clip-rule', 'filter', 'id', 'height', 'mask', 'preserveAspectRatio', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xmlns', 'xmlns:se', 'xmlns:xlink', 'y'],\n  switch: ['class', 'id', 'requiredFeatures', 'systemLanguage'],\n  symbol: ['class', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'opacity', 'preserveAspectRatio', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'viewBox'],\n  text: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'transform', 'x', 'xml:space', 'y'],\n  textPath: ['class', 'id', 'method', 'requiredFeatures', 'spacing', 'startOffset', 'style', 'systemLanguage', 'transform', 'xlink:href'],\n  title: [],\n  tspan: ['class', 'clip-path', 'clip-rule', 'dx', 'dy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'rotate', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'textLength', 'transform', 'x', 'xml:space', 'y'],\n  use: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'transform', 'width', 'x', 'xlink:href', 'y'],\n\n  // MathML Elements\n  annotation: ['encoding'],\n  'annotation-xml': ['encoding'],\n  maction: ['actiontype', 'other', 'selection'],\n  math: ['class', 'id', 'display', 'xmlns'],\n  menclose: ['notation'],\n  merror: [],\n  mfrac: ['linethickness'],\n  mi: ['mathvariant'],\n  mmultiscripts: [],\n  mn: [],\n  mo: ['fence', 'lspace', 'maxsize', 'minsize', 'rspace', 'stretchy'],\n  mover: [],\n  mpadded: ['lspace', 'width', 'height', 'depth', 'voffset'],\n  mphantom: [],\n  mprescripts: [],\n  mroot: [],\n  mrow: ['xlink:href', 'xlink:type', 'xmlns:xlink'],\n  mspace: ['depth', 'height', 'width'],\n  msqrt: [],\n  mstyle: ['displaystyle', 'mathbackground', 'mathcolor', 'mathvariant', 'scriptlevel'],\n  msub: [],\n  msubsup: [],\n  msup: [],\n  mtable: ['align', 'columnalign', 'columnlines', 'columnspacing', 'displaystyle', 'equalcolumns', 'equalrows', 'frame', 'rowalign', 'rowlines', 'rowspacing', 'width'],\n  mtd: ['columnalign', 'columnspan', 'rowalign', 'rowspan'],\n  mtext: [],\n  mtr: ['columnalign', 'rowalign'],\n  munder: [],\n  munderover: [],\n  none: [],\n  semantics: []\n};\n\n// Produce a Namespace-aware version of svgWhitelist\nconst svgWhiteListNS_ = {};\nObject.entries(svgWhiteList_).forEach(function ([elt, atts]) {\n  const attNS = {};\n  Object.entries(atts).forEach(function ([i, att]) {\n    if (att.includes(':')) {\n      const v = att.split(':');\n      attNS[v[1]] = NS[(v[0]).toUpperCase()];\n    } else {\n      attNS[att] = att === 'xmlns' ? NS.XMLNS : null;\n    }\n  });\n  svgWhiteListNS_[elt] = attNS;\n});\n\n/**\n* Sanitizes the input node and its children.\n* It only keeps what is allowed from our whitelist defined above.\n* @function module:sanitize.sanitizeSvg\n* @param {Text|Element} node - The DOM element to be checked (we'll also check its children) or text node to be cleaned up\n* @returns {undefined}\n*/\nexport const sanitizeSvg = function (node) {\n  // Cleanup text nodes\n  if (node.nodeType === 3) { // 3 === TEXT_NODE\n    // Trim whitespace\n    node.nodeValue = node.nodeValue.replace(/^\\s+|\\s+$/g, '');\n    // Remove if empty\n    if (!node.nodeValue.length) {\n      node.remove();\n    }\n  }\n\n  // We only care about element nodes.\n  // Automatically return for all non-element nodes, such as comments, etc.\n  if (node.nodeType !== 1) { // 1 == ELEMENT_NODE\n    return;\n  }\n\n  const doc = node.ownerDocument;\n  const parent = node.parentNode;\n  // can parent ever be null here?  I think the root node's parent is the document...\n  if (!doc || !parent) {\n    return;\n  }\n\n  const allowedAttrs = svgWhiteList_[node.nodeName];\n  const allowedAttrsNS = svgWhiteListNS_[node.nodeName];\n  // if this element is supported, sanitize it\n  if (typeof allowedAttrs !== 'undefined') {\n    const seAttrs = [];\n    let i = node.attributes.length;\n    while (i--) {\n      // if the attribute is not in our whitelist, then remove it\n      // could use jQuery's inArray(), but I don't know if that's any better\n      const attr = node.attributes.item(i);\n      const attrName = attr.nodeName;\n      const attrLocalName = attr.localName;\n      const attrNsURI = attr.namespaceURI;\n      // Check that an attribute with the correct localName in the correct namespace is on\n      // our whitelist or is a namespace declaration for one of our allowed namespaces\n      if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) &&\n        !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {\n        // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.\n        // Bypassing the whitelist to allow se: prefixes.\n        // Is there a more appropriate way to do this?\n        if (attrName.startsWith('se:') || attrName.startsWith('data-')) {\n          seAttrs.push([attrName, attr.value]);\n        }\n        node.removeAttributeNS(attrNsURI, attrLocalName);\n      }\n\n      // Add spaces before negative signs where necessary\n      if (isGecko()) {\n        switch (attrName) {\n        case 'transform':\n        case 'gradientTransform':\n        case 'patternTransform':\n          const val = attr.value.replace(/(\\d)-/g, '$1 -');\n          node.setAttribute(attrName, val);\n          break;\n        }\n      }\n\n      // For the style attribute, rewrite it in terms of XML presentational attributes\n      if (attrName === 'style') {\n        const props = attr.value.split(';');\n        let p = props.length;\n        while (p--) {\n          const [name, val] = props[p].split(':');\n          const styleAttrName = (name || '').trim();\n          const styleAttrVal = (val || '').trim();\n          // Now check that this attribute is supported\n          if (allowedAttrs.includes(styleAttrName)) {\n            node.setAttribute(styleAttrName, styleAttrVal);\n          }\n        }\n        node.removeAttribute('style');\n      }\n    }\n\n    Object.values(seAttrs).forEach(([att, val]) => {\n      node.setAttributeNS(NS.SE, att, val);\n    });\n\n    // for some elements that have a xlink:href, ensure the URI refers to a local element\n    // (but not for links)\n    const href = getHref(node);\n    if (href &&\n      ['filter', 'linearGradient', 'pattern',\n        'radialGradient', 'textPath', 'use'].includes(node.nodeName)) {\n      // TODO: we simply check if the first character is a #, is this bullet-proof?\n      if (href[0] !== '#') {\n        // remove the attribute (but keep the element)\n        setHref(node, '');\n        node.removeAttributeNS(NS.XLINK, 'href');\n      }\n    }\n\n    // Safari crashes on a <use> without a xlink:href, so we just remove the node here\n    if (node.nodeName === 'use' && !getHref(node)) {\n      node.remove();\n      return;\n    }\n    // if the element has attributes pointing to a non-local reference,\n    // need to remove the attribute\n    Object.values(['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'], function (attr) {\n      let val = node.getAttribute(attr);\n      if (val) {\n        val = getUrlFromAttr(val);\n        // simply check for first character being a '#'\n        if (val && val[0] !== '#') {\n          node.setAttribute(attr, '');\n          node.removeAttribute(attr);\n        }\n      }\n    });\n\n    // recurse to children\n    i = node.childNodes.length;\n    while (i--) { sanitizeSvg(node.childNodes.item(i)); }\n  // else (element not supported), remove it\n  } else {\n    // remove all children from this node and insert them before this node\n    // FIXME: in the case of animation elements this will hardly ever be correct\n    const children = [];\n    while (node.hasChildNodes()) {\n      children.push(parent.insertBefore(node.firstChild, node));\n    }\n\n    // remove this node from the document altogether\n    node.remove();\n\n    // call sanitizeSvg on each of those children\n    let i = children.length;\n    while (i--) { sanitizeSvg(children[i]); }\n  }\n};\n","/* globals jQuery */\n/**\n * Recalculate.\n * @module recalculate\n * @license MIT\n */\n\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {convertToNum} from './units.js';\nimport {isWebkit} from './browser.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {getRotationAngle, getHref, getBBox, getRefElem} from './utilities.js';\nimport {BatchCommand, ChangeElementCommand} from './history.js';\nimport {remapElement} from './coords.js';\nimport {\n  isIdentity, matrixMultiply, transformPoint, transformListToTransform,\n  hasMatrixTransform\n} from './math.js';\n\nconst $ = jqPluginSVG(jQuery);\n\nlet context_;\n\n/**\n* @interface module:recalculate.EditorContext\n*/\n/**\n * @function module:recalculate.EditorContext#getSVGRoot\n * @returns {SVGSVGElement} The root DOM element\n */\n/**\n * @function module:recalculate.EditorContext#getStartTransform\n * @returns {string}\n*/\n/**\n * @function module:recalculate.EditorContext#setStartTransform\n * @param {string} transform\n * @returns {undefined}\n */\n\n/**\n* @function module:recalculate.init\n* @param {module:recalculate.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  context_ = editorContext;\n};\n\n/**\n* Updates a `<clipPath>`s values based on the given translation of an element.\n* @function module:recalculate.updateClipPath\n* @param {string} attr - The clip-path attribute value with the clipPath's ID\n* @param {Float} tx - The translation's x value\n* @param {Float} ty - The translation's y value\n* @returns {undefined}\n*/\nexport const updateClipPath = function (attr, tx, ty) {\n  const path = getRefElem(attr).firstChild;\n  const cpXform = getTransformList(path);\n  const newxlate = context_.getSVGRoot().createSVGTransform();\n  newxlate.setTranslate(tx, ty);\n\n  cpXform.appendItem(newxlate);\n\n  // Update clipPath's dimensions\n  recalculateDimensions(path);\n};\n\n/**\n* Decides the course of action based on the element's transform list.\n* @function module:recalculate.recalculateDimensions\n* @param {Element} selected - The DOM element to recalculate\n* @returns {Command} Undo command object with the resulting change\n*/\nexport const recalculateDimensions = function (selected) {\n  if (selected == null) { return null; }\n\n  // Firefox Issue - 1081\n  if (selected.nodeName === 'svg' && navigator.userAgent.includes('Firefox/20')) {\n    return null;\n  }\n\n  const svgroot = context_.getSVGRoot();\n  const tlist = getTransformList(selected);\n\n  // remove any unnecessary transforms\n  if (tlist && tlist.numberOfItems > 0) {\n    let k = tlist.numberOfItems;\n    const noi = k;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 0) {\n        tlist.removeItem(k);\n      // remove identity matrices\n      } else if (xform.type === 1) {\n        if (isIdentity(xform.matrix)) {\n          if (noi === 1) {\n            // Overcome Chrome bug (though only when noi is 1) with\n            //    `removeItem` preventing `removeAttribute` from\n            //    subsequently working\n            // See https://bugs.chromium.org/p/chromium/issues/detail?id=843901\n            selected.removeAttribute('transform');\n            return null;\n          }\n          tlist.removeItem(k);\n        }\n      // remove zero-degree rotations\n      } else if (xform.type === 4) {\n        if (xform.angle === 0) {\n          tlist.removeItem(k);\n        }\n      }\n    }\n    // End here if all it has is a rotation\n    if (tlist.numberOfItems === 1 &&\n        getRotationAngle(selected)) { return null; }\n  }\n\n  // if this element had no transforms, we are done\n  if (!tlist || tlist.numberOfItems === 0) {\n    // Chrome apparently had a bug that requires clearing the attribute first.\n    selected.setAttribute('transform', '');\n    // However, this still next line currently doesn't work at all in Chrome\n    selected.removeAttribute('transform');\n    // selected.transform.baseVal.clear(); // Didn't help for Chrome bug\n    return null;\n  }\n\n  // TODO: Make this work for more than 2\n  if (tlist) {\n    let mxs = [];\n    let k = tlist.numberOfItems;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 1) {\n        mxs.push([xform.matrix, k]);\n      } else if (mxs.length) {\n        mxs = [];\n      }\n    }\n    if (mxs.length === 2) {\n      const mNew = svgroot.createSVGTransformFromMatrix(matrixMultiply(mxs[1][0], mxs[0][0]));\n      tlist.removeItem(mxs[0][1]);\n      tlist.removeItem(mxs[1][1]);\n      tlist.insertItemBefore(mNew, mxs[1][1]);\n    }\n\n    // combine matrix + translate\n    k = tlist.numberOfItems;\n    if (k >= 2 && tlist.getItem(k - 2).type === 1 && tlist.getItem(k - 1).type === 2) {\n      const mt = svgroot.createSVGTransform();\n\n      const m = matrixMultiply(\n        tlist.getItem(k - 2).matrix,\n        tlist.getItem(k - 1).matrix);\n      mt.setMatrix(m);\n      tlist.removeItem(k - 2);\n      tlist.removeItem(k - 2);\n      tlist.appendItem(mt);\n    }\n  }\n\n  // If it still has a single [M] or [R][M], return null too (prevents BatchCommand from being returned).\n  switch (selected.tagName) {\n  // Ignore these elements, as they can absorb the [M]\n  case 'line':\n  case 'polyline':\n  case 'polygon':\n  case 'path':\n    break;\n  default:\n    if ((tlist.numberOfItems === 1 && tlist.getItem(0).type === 1) ||\n        (tlist.numberOfItems === 2 && tlist.getItem(0).type === 1 && tlist.getItem(0).type === 4)) {\n      return null;\n    }\n  }\n\n  // Grouped SVG element\n  const gsvg = $(selected).data('gsvg');\n\n  // we know we have some transforms, so set up return variable\n  const batchCmd = new BatchCommand('Transform');\n\n  // store initial values that will be affected by reducing the transform list\n  let changes = {};\n  let initial = null;\n  let attrs = [];\n  switch (selected.tagName) {\n  case 'line':\n    attrs = ['x1', 'y1', 'x2', 'y2'];\n    break;\n  case 'circle':\n    attrs = ['cx', 'cy', 'r'];\n    break;\n  case 'ellipse':\n    attrs = ['cx', 'cy', 'rx', 'ry'];\n    break;\n  case 'foreignObject':\n  case 'rect':\n  case 'image':\n    attrs = ['width', 'height', 'x', 'y'];\n    break;\n  case 'use':\n  case 'text':\n  case 'tspan':\n    attrs = ['x', 'y'];\n    break;\n  case 'polygon':\n  case 'polyline': {\n    initial = {};\n    initial.points = selected.getAttribute('points');\n    const list = selected.points;\n    const len = list.numberOfItems;\n    changes.points = new Array(len);\n    for (let i = 0; i < len; ++i) {\n      const pt = list.getItem(i);\n      changes.points[i] = {x: pt.x, y: pt.y};\n    }\n    break;\n  } case 'path':\n    initial = {};\n    initial.d = selected.getAttribute('d');\n    changes.d = selected.getAttribute('d');\n    break;\n  } // switch on element type to get initial values\n\n  if (attrs.length) {\n    changes = $(selected).attr(attrs);\n    $.each(changes, function (attr, val) {\n      changes[attr] = convertToNum(attr, val);\n    });\n  } else if (gsvg) {\n    // GSVG exception\n    changes = {\n      x: $(gsvg).attr('x') || 0,\n      y: $(gsvg).attr('y') || 0\n    };\n  }\n\n  // if we haven't created an initial array in polygon/polyline/path, then\n  // make a copy of initial values and include the transform\n  if (initial == null) {\n    initial = $.extend(true, {}, changes);\n    $.each(initial, function (attr, val) {\n      initial[attr] = convertToNum(attr, val);\n    });\n  }\n  // save the start transform value too\n  initial.transform = context_.getStartTransform() || '';\n\n  let oldcenter, newcenter;\n\n  // if it's a regular group, we have special processing to flatten transforms\n  if ((selected.tagName === 'g' && !gsvg) || selected.tagName === 'a') {\n    const box = getBBox(selected);\n\n    oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n    newcenter = transformPoint(\n      box.x + box.width / 2,\n      box.y + box.height / 2,\n      transformListToTransform(tlist).matrix\n    );\n    // let m = svgroot.createSVGMatrix();\n\n    // temporarily strip off the rotate and save the old center\n    const gangle = getRotationAngle(selected);\n    if (gangle) {\n      const a = gangle * Math.PI / 180;\n      let s;\n      if (Math.abs(a) > (1.0e-10)) {\n        s = Math.sin(a) / (1 - Math.cos(a));\n      } else {\n        // FIXME: This blows up if the angle is exactly 0!\n        s = 2 / a;\n      }\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n    const N = tlist.numberOfItems;\n    let tx = 0, ty = 0, operation = 0;\n\n    let firstM;\n    if (N) {\n      firstM = tlist.getItem(0).matrix;\n    }\n\n    let oldStartTransform;\n    // first, if it was a scale then the second-last transform will be it\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      operation = 3; // scale\n\n      // if the children are unrotated, pass the scale down directly\n      // otherwise pass the equivalent matrix() down directly\n      const tm = tlist.getItem(N - 3).matrix,\n        sm = tlist.getItem(N - 2).matrix,\n        tmn = tlist.getItem(N - 1).matrix;\n\n      const children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        tx = 0;\n        ty = 0;\n        if (child.nodeType === 1) {\n          const childTlist = getTransformList(child);\n\n          // some children might not have a transform (<metadata>, <defs>, etc)\n          if (!childTlist) { continue; }\n\n          const m = transformListToTransform(childTlist).matrix;\n\n          // Convert a matrix to a scale if applicable\n          // if (hasMatrixTransform(childTlist) && childTlist.numberOfItems == 1) {\n          //   if (m.b==0 && m.c==0 && m.e==0 && m.f==0) {\n          //     childTlist.removeItem(0);\n          //     const translateOrigin = svgroot.createSVGTransform(),\n          //       scale = svgroot.createSVGTransform(),\n          //       translateBack = svgroot.createSVGTransform();\n          //     translateOrigin.setTranslate(0, 0);\n          //     scale.setScale(m.a, m.d);\n          //     translateBack.setTranslate(0, 0);\n          //     childTlist.appendItem(translateBack);\n          //     childTlist.appendItem(scale);\n          //     childTlist.appendItem(translateOrigin);\n          //   }\n          // }\n\n          const angle = getRotationAngle(child);\n          oldStartTransform = context_.getStartTransform();\n          const childxforms = [];\n          context_.setStartTransform(child.getAttribute('transform'));\n          if (angle || hasMatrixTransform(childTlist)) {\n            const e2t = svgroot.createSVGTransform();\n            e2t.setMatrix(matrixMultiply(tm, sm, tmn, m));\n            childTlist.clear();\n            childTlist.appendItem(e2t);\n            childxforms.push(e2t);\n          // if not rotated or skewed, push the [T][S][-T] down to the child\n          } else {\n            // update the transform list with translate,scale,translate\n\n            // slide the [T][S][-T] from the front to the back\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n\n            // (only bringing [-T] to the right of [M])\n            // [T][S][-T][M] = [T][S][M][-T2]\n            // [-T2] = [M_inv][-T][M]\n            const t2n = matrixMultiply(m.inverse(), tmn, m);\n            // [T2] is always negative translation of [-T2]\n            const t2 = svgroot.createSVGMatrix();\n            t2.e = -t2n.e;\n            t2.f = -t2n.f;\n\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n            // [S2] = [T2_inv][M_inv][T][S][-T][M][-T2_inv]\n            const s2 = matrixMultiply(t2.inverse(), m.inverse(), tm, sm, tmn, m, t2n.inverse());\n\n            const translateOrigin = svgroot.createSVGTransform(),\n              scale = svgroot.createSVGTransform(),\n              translateBack = svgroot.createSVGTransform();\n            translateOrigin.setTranslate(t2n.e, t2n.f);\n            scale.setScale(s2.a, s2.d);\n            translateBack.setTranslate(t2.e, t2.f);\n            childTlist.appendItem(translateBack);\n            childTlist.appendItem(scale);\n            childTlist.appendItem(translateOrigin);\n            childxforms.push(translateBack);\n            childxforms.push(scale);\n            childxforms.push(translateOrigin);\n            // logMatrix(translateBack.matrix);\n            // logMatrix(scale.matrix);\n          } // not rotated\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          // TODO: If any <use> have this group as a parent and are\n          // referencing this child, then we need to impose a reverse\n          // scale on it so that when it won't get double-translated\n          // const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n          // const href = '#' + child.id;\n          // let u = uses.length;\n          // while (u--) {\n          //   const useElem = uses.item(u);\n          //   if (href == getHref(useElem)) {\n          //     const usexlate = svgroot.createSVGTransform();\n          //     usexlate.setTranslate(-tx,-ty);\n          //     getTransformList(useElem).insertItemBefore(usexlate,0);\n          //     batchCmd.addSubCommand( recalculateDimensions(useElem) );\n          //   }\n          // }\n          context_.setStartTransform(oldStartTransform);\n        } // element\n      } // for each child\n      // Remove these transforms from group\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    } else if (N >= 3 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      const m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n    // next, check if the first transform was a translate\n    // if we had [ T1 ] [ M ] we want to transform this into [ M ] [ T2 ]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ]\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const T_M = transformListToTransform(tlist).matrix;\n      tlist.removeItem(0);\n      const mInv = transformListToTransform(tlist).matrix.inverse();\n      const M2 = matrixMultiply(mInv, T_M);\n\n      tx = M2.e;\n      ty = M2.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n\n        const clipPathsDone = [];\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            // Check if child has clip-path\n            if (child.getAttribute('clip-path')) {\n              // tx, ty\n              const attr = child.getAttribute('clip-path');\n              if (!clipPathsDone.includes(attr)) {\n                updateClipPath(attr, tx, ty);\n                clipPathsDone.push(attr);\n              }\n            }\n\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n\n            const childTlist = getTransformList(child);\n            // some children might not have a transform (<metadata>, <defs>, etc)\n            if (childTlist) {\n              const newxlate = svgroot.createSVGTransform();\n              newxlate.setTranslate(tx, ty);\n              if (childTlist.numberOfItems) {\n                childTlist.insertItemBefore(newxlate, 0);\n              } else {\n                childTlist.appendItem(newxlate);\n              }\n              batchCmd.addSubCommand(recalculateDimensions(child));\n              // If any <use> have this group as a parent and are\n              // referencing this child, then impose a reverse translate on it\n              // so that when it won't get double-translated\n              const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n              const href = '#' + child.id;\n              let u = uses.length;\n              while (u--) {\n                const useElem = uses.item(u);\n                if (href === getHref(useElem)) {\n                  const usexlate = svgroot.createSVGTransform();\n                  usexlate.setTranslate(-tx, -ty);\n                  getTransformList(useElem).insertItemBefore(usexlate, 0);\n                  batchCmd.addSubCommand(recalculateDimensions(useElem));\n                }\n              }\n              context_.setStartTransform(oldStartTransform);\n            }\n          }\n        }\n        context_.setStartTransform(oldStartTransform);\n      }\n    // else, a matrix imposition from a parent group\n    // keep pushing it down to the children\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !gangle) {\n      operation = 1;\n      const m = tlist.getItem(0).matrix,\n        children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        if (child.nodeType === 1) {\n          oldStartTransform = context_.getStartTransform();\n          context_.setStartTransform(child.getAttribute('transform'));\n          const childTlist = getTransformList(child);\n\n          if (!childTlist) { continue; }\n\n          const em = matrixMultiply(m, transformListToTransform(childTlist).matrix);\n          const e2m = svgroot.createSVGTransform();\n          e2m.setMatrix(em);\n          childTlist.clear();\n          childTlist.appendItem(e2m, 0);\n\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          context_.setStartTransform(oldStartTransform);\n\n          // Convert stroke\n          // TODO: Find out if this should actually happen somewhere else\n          const sw = child.getAttribute('stroke-width');\n          if (child.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n            const avg = (Math.abs(em.a) + Math.abs(em.d)) / 2;\n            child.setAttribute('stroke-width', sw * avg);\n          }\n        }\n      }\n      tlist.clear();\n    // else it was just a rotate\n    } else {\n      if (gangle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (gangle) {\n        newcenter = {\n          x: oldcenter.x + firstM.e,\n          y: oldcenter.y + firstM.f\n        };\n\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n    // if it was a resize\n    } else if (operation === 3) {\n      const m = transformListToTransform(tlist).matrix;\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(gangle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(gangle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse(),\n        mInv = m.inverse(),\n        extrat = matrixMultiply(mInv, rnewInv, rold, m);\n\n      tx = extrat.e;\n      ty = extrat.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // now push this transform down to the children\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n            const childTlist = getTransformList(child);\n            const newxlate = svgroot.createSVGTransform();\n            newxlate.setTranslate(tx, ty);\n            if (childTlist.numberOfItems) {\n              childTlist.insertItemBefore(newxlate, 0);\n            } else {\n              childTlist.appendItem(newxlate);\n            }\n\n            batchCmd.addSubCommand(recalculateDimensions(child));\n            context_.setStartTransform(oldStartTransform);\n          }\n        }\n      }\n\n      if (gangle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  // else, it's a non-group\n  } else {\n    // FIXME: box might be null for some elements (<metadata> etc), need to handle this\n    const box = getBBox(selected);\n\n    // Paths (and possbly other shapes) will have no BBox while still in <defs>,\n    // but we still may need to recalculate them (see issue 595).\n    // TODO: Figure out how to get BBox from these elements in case they\n    // have a rotation transform\n\n    if (!box && selected.tagName !== 'path') return null;\n\n    let m; // = svgroot.createSVGMatrix();\n    // temporarily strip off the rotate and save the old center\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n      newcenter = transformPoint(\n        box.x + box.width / 2,\n        box.y + box.height / 2,\n        transformListToTransform(tlist).matrix\n      );\n\n      const a = angle * Math.PI / 180;\n      const s = (Math.abs(a) > (1.0e-10))\n        ? Math.sin(a) / (1 - Math.cos(a))\n        // FIXME: This blows up if the angle is exactly 0!\n        : 2 / a;\n\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n\n    // 2 = translate, 3 = scale, 4 = rotate, 1 = matrix imposition\n    let operation = 0;\n    const N = tlist.numberOfItems;\n\n    // Check if it has a gradient with userSpaceOnUse, in which case\n    // adjust it by recalculating the matrix transform.\n    // TODO: Make this work in Webkit using transformlist.SVGTransformList\n    if (!isWebkit()) {\n      const fill = selected.getAttribute('fill');\n      if (fill && fill.startsWith('url(')) {\n        const paint = getRefElem(fill);\n        let type = 'pattern';\n        if (paint.tagName !== type) type = 'gradient';\n        const attrVal = paint.getAttribute(type + 'Units');\n        if (attrVal === 'userSpaceOnUse') {\n          // Update the userSpaceOnUse element\n          m = transformListToTransform(tlist).matrix;\n          const gtlist = getTransformList(paint);\n          const gmatrix = transformListToTransform(gtlist).matrix;\n          m = matrixMultiply(m, gmatrix);\n          const mStr = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n          paint.setAttribute(type + 'Transform', mStr);\n        }\n      }\n    }\n\n    // first, if it was a scale of a non-skewed element, then the second-last\n    // transform will be the [S]\n    // if we had [M][T][S][T] we want to extract the matrix equivalent of\n    // [T][S][T] and push it down to the element\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      // Removed this so a <use> with a given [T][S][T] would convert to a matrix.\n      // Is that bad?\n      //  && selected.nodeName != 'use'\n      operation = 3; // scale\n      m = transformListToTransform(tlist, N - 3, N - 1).matrix;\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    // if we had [T][S][-T][M], then this was a skewed element being resized\n    // Thus, we simply combine it all into one matrix\n    } else if (N === 4 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n      // reset the matrix so that the element is not re-mapped\n      m = svgroot.createSVGMatrix();\n    // if we had [R][T][S][-T][M], then this was a rotated matrix-element\n    // if we had [T1][M] we want to transform this into [M][T2]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ] and we can push [T2]\n    // down to the element\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const oldxlate = tlist.getItem(0).matrix,\n        meq = transformListToTransform(tlist, 1).matrix,\n        meqInv = meq.inverse();\n      m = matrixMultiply(meqInv, oldxlate, meq);\n      tlist.removeItem(0);\n    // else if this child now has a matrix imposition (from a parent group)\n    // we might be able to simplify\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !angle) {\n      // Remap all point-based elements\n      m = transformListToTransform(tlist).matrix;\n      switch (selected.tagName) {\n      case 'line':\n        changes = $(selected).attr(['x1', 'y1', 'x2', 'y2']);\n        // Fallthrough\n      case 'polyline':\n      case 'polygon':\n        changes.points = selected.getAttribute('points');\n        if (changes.points) {\n          const list = selected.points;\n          const len = list.numberOfItems;\n          changes.points = new Array(len);\n          for (let i = 0; i < len; ++i) {\n            const pt = list.getItem(i);\n            changes.points[i] = {x: pt.x, y: pt.y};\n          }\n        }\n        // Fallthrough\n      case 'path':\n        changes.d = selected.getAttribute('d');\n        operation = 1;\n        tlist.clear();\n        break;\n      default:\n        break;\n      }\n    // if it was a rotation, put the rotate back and return without a command\n    // (this function has zero work to do for a rotate())\n    } else {\n      // operation = 4; // rotation\n      if (angle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate or resize, we need to remap the element and absorb the xform\n    if (operation === 1 || operation === 2 || operation === 3) {\n      remapElement(selected, changes, m);\n    } // if we are remapping\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (angle) {\n        if (!hasMatrixTransform(tlist)) {\n          newcenter = {\n            x: oldcenter.x + m.e,\n            y: oldcenter.y + m.f\n          };\n        }\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      // We have special processing for tspans:  Tspans are not transformable\n      // but they can have x,y coordinates (sigh).  Thus, if this was a translate,\n      // on a text element, also translate any tspan children.\n      if (selected.tagName === 'text') {\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.tagName === 'tspan') {\n            const tspanChanges = {\n              x: $(child).attr('x') || 0,\n              y: $(child).attr('y') || 0\n            };\n            remapElement(child, tspanChanges, m);\n          }\n        }\n      }\n    // [Rold][M][T][S][-T] became [Rold][M]\n    // we want it to be [Rnew][M][Tr] where Tr is the\n    // translation required to re-center it\n    // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]\n    } else if (operation === 3 && angle) {\n      const m = transformListToTransform(tlist).matrix;\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(angle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(angle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse();\n      const mInv = m.inverse();\n      const extrat = matrixMultiply(mInv, rnewInv, rold, m);\n\n      remapElement(selected, changes, extrat);\n      if (angle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  } // a non-group\n\n  // if the transform list has been emptied, remove it\n  if (tlist.numberOfItems === 0) {\n    selected.removeAttribute('transform');\n  }\n\n  batchCmd.addSubCommand(new ChangeElementCommand(selected, initial));\n\n  return batchCmd;\n};\n","/* globals jQuery */\n/**\n * DOM element selection box tools\n * @module select\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {isTouch, isWebkit} from './browser.js'; // , isOpera\nimport {getRotationAngle, getBBox, getStrokedBBox} from './utilities.js';\nimport {transformListToTransform, transformBox, transformPoint} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\nlet svgFactory_;\nlet config_;\nlet selectorManager_; // A Singleton\nconst gripRadius = isTouch() ? 10 : 4;\n\n/**\n* Private class for DOM element selection boxes.\n*/\nexport class Selector {\n  /**\n  * @param {Integer} id - Internally identify the selector\n  * @param {Element} elem - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for initialization (prevents duplicate `getBBox` call).\n  */\n  constructor (id, elem, bbox) {\n    // this is the selector's unique number\n    this.id = id;\n\n    // this holds a reference to the element for which this selector is being used\n    this.selectedElement = elem;\n\n    // this is a flag used internally to track whether the selector is being used or not\n    this.locked = true;\n\n    // this holds a reference to the <g> element that holds all visual elements of the selector\n    this.selectorGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: ('selectorGroup' + this.id)}\n    });\n\n    // this holds a reference to the path rect\n    this.selectorRect = this.selectorGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'path',\n        attr: {\n          id: ('selectedBox' + this.id),\n          fill: 'none',\n          stroke: '#22C',\n          'stroke-width': '1',\n          'stroke-dasharray': '5,5',\n          // need to specify this so that the rect is not selectable\n          style: 'pointer-events:none'\n        }\n      })\n    );\n\n    // this holds a reference to the grip coordinates for this selector\n    this.gripCoords = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.reset(this.selectedElement, bbox);\n  }\n\n  /**\n  * Used to reset the id and element that the selector is attached to.\n  * @param {Element} e - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} bbox - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  reset (e, bbox) {\n    this.locked = true;\n    this.selectedElement = e;\n    this.resize(bbox);\n    this.selectorGroup.setAttribute('display', 'inline');\n  }\n\n  /**\n  * Updates cursors for corner grips on rotation so arrows point the right way.\n  * @param {Float} angle - Current rotation angle in degrees\n  * @returns {undefined}\n  */\n  updateGripCursors (angle) {\n    let dir;\n    const dirArr = [];\n    let steps = Math.round(angle / 45);\n    if (steps < 0) { steps += 8; }\n    for (dir in selectorManager_.selectorGrips) {\n      dirArr.push(dir);\n    }\n    while (steps > 0) {\n      dirArr.push(dirArr.shift());\n      steps--;\n    }\n    let i = 0;\n    for (dir in selectorManager_.selectorGrips) {\n      selectorManager_.selectorGrips[dir].setAttribute('style', ('cursor:' + dirArr[i] + '-resize'));\n      i++;\n    }\n  }\n\n  /**\n  * Show the resize grips of this selector.\n  * @param {boolean} show - Indicates whether grips should be shown or not\n  * @returns {undefined}\n  */\n  showGrips (show) {\n    const bShow = show ? 'inline' : 'none';\n    selectorManager_.selectorGripsGroup.setAttribute('display', bShow);\n    const elem = this.selectedElement;\n    this.hasGrips = show;\n    if (elem && show) {\n      this.selectorGroup.append(selectorManager_.selectorGripsGroup);\n      this.updateGripCursors(getRotationAngle(elem));\n    }\n  }\n\n  /**\n  * Updates the selector to match the element's size.\n  * @param {module:utilities.BBoxObject} [bbox] - BBox to use for resize (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  resize (bbox) {\n    const selectedBox = this.selectorRect,\n      mgr = selectorManager_,\n      selectedGrips = mgr.selectorGrips,\n      selected = this.selectedElement,\n      sw = selected.getAttribute('stroke-width'),\n      currentZoom = svgFactory_.getCurrentZoom();\n    let offset = 1 / currentZoom;\n    if (selected.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n      offset += (sw / 2);\n    }\n\n    const {tagName} = selected;\n    if (tagName === 'text') {\n      offset += 2 / currentZoom;\n    }\n\n    // loop and transform our bounding box until we reach our first rotation\n    const tlist = getTransformList(selected);\n    const m = transformListToTransform(tlist).matrix;\n\n    // This should probably be handled somewhere else, but for now\n    // it keeps the selection box correctly positioned when zoomed\n    m.e *= currentZoom;\n    m.f *= currentZoom;\n\n    if (!bbox) {\n      bbox = getBBox(selected);\n    }\n    // TODO: getBBox (previous line) already knows to call getStrokedBBox when tagName === 'g'. Remove this?\n    // TODO: getBBox doesn't exclude 'gsvg' and calls getStrokedBBox for any 'g'. Should getBBox be updated?\n    if (tagName === 'g' && !$.data(selected, 'gsvg')) {\n      // The bbox for a group does not include stroke vals, so we\n      // get the bbox based on its children.\n      const strokedBbox = getStrokedBBox([selected.childNodes]);\n      if (strokedBbox) {\n        bbox = strokedBbox;\n      }\n    }\n\n    // apply the transforms\n    const l = bbox.x, t = bbox.y, w = bbox.width, h = bbox.height;\n    // bbox = {x: l, y: t, width: w, height: h}; // Not in use\n\n    // we need to handle temporary transforms too\n    // if skewed, get its transformed box, then find its axis-aligned bbox\n\n    // *\n    offset *= currentZoom;\n\n    const nbox = transformBox(l * currentZoom, t * currentZoom, w * currentZoom, h * currentZoom, m),\n      {aabox} = nbox;\n    let nbax = aabox.x - offset,\n      nbay = aabox.y - offset,\n      nbaw = aabox.width + (offset * 2),\n      nbah = aabox.height + (offset * 2);\n\n    // now if the shape is rotated, un-rotate it\n    const cx = nbax + nbaw / 2,\n      cy = nbay + nbah / 2;\n\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      const rot = svgFactory_.svgRoot().createSVGTransform();\n      rot.setRotate(-angle, cx, cy);\n      const rotm = rot.matrix;\n      nbox.tl = transformPoint(nbox.tl.x, nbox.tl.y, rotm);\n      nbox.tr = transformPoint(nbox.tr.x, nbox.tr.y, rotm);\n      nbox.bl = transformPoint(nbox.bl.x, nbox.bl.y, rotm);\n      nbox.br = transformPoint(nbox.br.x, nbox.br.y, rotm);\n\n      // calculate the axis-aligned bbox\n      const {tl} = nbox;\n      let minx = tl.x,\n        miny = tl.y,\n        maxx = tl.x,\n        maxy = tl.y;\n\n      const {min, max} = Math;\n\n      minx = min(minx, min(nbox.tr.x, min(nbox.bl.x, nbox.br.x))) - offset;\n      miny = min(miny, min(nbox.tr.y, min(nbox.bl.y, nbox.br.y))) - offset;\n      maxx = max(maxx, max(nbox.tr.x, max(nbox.bl.x, nbox.br.x))) + offset;\n      maxy = max(maxy, max(nbox.tr.y, max(nbox.bl.y, nbox.br.y))) + offset;\n\n      nbax = minx;\n      nbay = miny;\n      nbaw = (maxx - minx);\n      nbah = (maxy - miny);\n    }\n\n    const dstr = 'M' + nbax + ',' + nbay +\n      ' L' + (nbax + nbaw) + ',' + nbay +\n      ' ' + (nbax + nbaw) + ',' + (nbay + nbah) +\n      ' ' + nbax + ',' + (nbay + nbah) + 'z';\n    selectedBox.setAttribute('d', dstr);\n\n    const xform = angle ? 'rotate(' + [angle, cx, cy].join(',') + ')' : '';\n    this.selectorGroup.setAttribute('transform', xform);\n\n    // TODO(codedread): Is this needed?\n    //  if (selected === selectedElements[0]) {\n    this.gripCoords = {\n      nw: [nbax, nbay],\n      ne: [nbax + nbaw, nbay],\n      sw: [nbax, nbay + nbah],\n      se: [nbax + nbaw, nbay + nbah],\n      n: [nbax + (nbaw) / 2, nbay],\n      w: [nbax, nbay + (nbah) / 2],\n      e: [nbax + nbaw, nbay + (nbah) / 2],\n      s: [nbax + (nbaw) / 2, nbay + nbah]\n    };\n    for (const dir in this.gripCoords) {\n      const coords = this.gripCoords[dir];\n      selectedGrips[dir].setAttribute('cx', coords[0]);\n      selectedGrips[dir].setAttribute('cy', coords[1]);\n    }\n\n    // we want to go 20 pixels in the negative transformed y direction, ignoring scale\n    mgr.rotateGripConnector.setAttribute('x1', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y1', nbay);\n    mgr.rotateGripConnector.setAttribute('x2', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y2', nbay - (gripRadius * 5));\n\n    mgr.rotateGrip.setAttribute('cx', nbax + (nbaw) / 2);\n    mgr.rotateGrip.setAttribute('cy', nbay - (gripRadius * 5));\n    // }\n  }\n}\n\n/**\n* Manage all selector objects (selection boxes).\n*/\nexport class SelectorManager {\n  constructor () {\n    // this will hold the <g> element that contains all selector rects/grips\n    this.selectorParentGroup = null;\n\n    // this is a special rect that is used for multi-select\n    this.rubberBandBox = null;\n\n    // this will hold objects of type Selector (see above)\n    this.selectors = [];\n\n    // this holds a map of SVG elements to their Selector object\n    this.selectorMap = {};\n\n    // this holds a reference to the grip elements\n    this.selectorGrips = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.selectorGripsGroup = null;\n    this.rotateGripConnector = null;\n    this.rotateGrip = null;\n\n    this.initGroup();\n  }\n\n  /**\n  * Resets the parent selector group element.\n  * @returns {undefined}\n  */\n  initGroup () {\n    // remove old selector parent group if it existed\n    if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {\n      this.selectorParentGroup.remove();\n    }\n\n    // create parent selector group and add it to svgroot\n    this.selectorParentGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: 'selectorParentGroup'}\n    });\n    this.selectorGripsGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {display: 'none'}\n    });\n    this.selectorParentGroup.append(this.selectorGripsGroup);\n    svgFactory_.svgRoot().append(this.selectorParentGroup);\n\n    this.selectorMap = {};\n    this.selectors = [];\n    this.rubberBandBox = null;\n\n    // add the corner grips\n    for (const dir in this.selectorGrips) {\n      const grip = svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: ('selectorGrip_resize_' + dir),\n          fill: '#22C',\n          r: gripRadius,\n          style: ('cursor:' + dir + '-resize'),\n          // This expands the mouse-able area of the grips making them\n          // easier to grab with the mouse.\n          // This works in Opera and WebKit, but does not work in Firefox\n          // see https://bugzilla.mozilla.org/show_bug.cgi?id=500174\n          'stroke-width': 2,\n          'pointer-events': 'all'\n        }\n      });\n\n      $.data(grip, 'dir', dir);\n      $.data(grip, 'type', 'resize');\n      this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);\n    }\n\n    // add rotator elems\n    this.rotateGripConnector = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'line',\n        attr: {\n          id: ('selectorGrip_rotateconnector'),\n          stroke: '#22C',\n          'stroke-width': '1'\n        }\n      })\n    );\n\n    this.rotateGrip = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: 'selectorGrip_rotate',\n          fill: 'lime',\n          r: gripRadius,\n          stroke: '#22C',\n          'stroke-width': 2,\n          style: 'cursor:url(' + config_.imgPath + 'rotate.png) 12 12, auto;'\n        }\n      })\n    );\n    $.data(this.rotateGrip, 'type', 'rotate');\n\n    if ($('#canvasBackground').length) { return; }\n\n    const [width, height] = config_.dimensions;\n    const canvasbg = svgFactory_.createSVGElement({\n      element: 'svg',\n      attr: {\n        id: 'canvasBackground',\n        width,\n        height,\n        x: 0,\n        y: 0,\n        overflow: (isWebkit() ? 'none' : 'visible'), // Chrome 7 has a problem with this when zooming out\n        style: 'pointer-events:none'\n      }\n    });\n\n    const rect = svgFactory_.createSVGElement({\n      element: 'rect',\n      attr: {\n        width: '100%',\n        height: '100%',\n        x: 0,\n        y: 0,\n        'stroke-width': 1,\n        stroke: '#000',\n        fill: '#FFF',\n        style: 'pointer-events:none'\n      }\n    });\n\n    // Both Firefox and WebKit are too slow with this filter region (especially at higher\n    // zoom levels) and Opera has at least one bug\n    // if (!isOpera()) rect.setAttribute('filter', 'url(#canvashadow)');\n    canvasbg.append(rect);\n    svgFactory_.svgRoot().insertBefore(canvasbg, svgFactory_.svgContent());\n    // Ok to replace above with `svgFactory_.svgContent().before(canvasbg);`?\n  }\n\n  /**\n  *\n  * @param {Element} elem - DOM element to get the selector for\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {Selector} The selector based on the given element\n  */\n  requestSelector (elem, bbox) {\n    if (elem == null) { return null; }\n\n    const N = this.selectors.length;\n    // If we've already acquired one for this element, return it.\n    if (typeof this.selectorMap[elem.id] === 'object') {\n      this.selectorMap[elem.id].locked = true;\n      return this.selectorMap[elem.id];\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && !this.selectors[i].locked) {\n        this.selectors[i].locked = true;\n        this.selectors[i].reset(elem, bbox);\n        this.selectorMap[elem.id] = this.selectors[i];\n        return this.selectors[i];\n      }\n    }\n    // if we reached here, no available selectors were found, we create one\n    this.selectors[N] = new Selector(N, elem, bbox);\n    this.selectorParentGroup.append(this.selectors[N].selectorGroup);\n    this.selectorMap[elem.id] = this.selectors[N];\n    return this.selectors[N];\n  }\n\n  /**\n  * Removes the selector of the given element (hides selection box).\n  *\n  * @param {Element} elem - DOM element to remove the selector for\n  * @returns {undefined}\n  */\n  releaseSelector (elem) {\n    if (elem == null) { return; }\n    const N = this.selectors.length,\n      sel = this.selectorMap[elem.id];\n    if (!sel.locked) {\n      // TODO(codedread): Ensure this exists in this module.\n      console.log('WARNING! selector was released but was already unlocked');\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && this.selectors[i] === sel) {\n        delete this.selectorMap[elem.id];\n        sel.locked = false;\n        sel.selectedElement = null;\n        sel.showGrips(false);\n\n        // remove from DOM and store reference in JS but only if it exists in the DOM\n        try {\n          sel.selectorGroup.setAttribute('display', 'none');\n        } catch (e) {}\n\n        break;\n      }\n    }\n  }\n\n  /**\n  * @returns {SVGRectElement} The rubberBandBox DOM element. This is the rectangle drawn by\n  * the user for selecting/zooming\n  */\n  getRubberBandBox () {\n    if (!this.rubberBandBox) {\n      this.rubberBandBox = this.selectorParentGroup.appendChild(\n        svgFactory_.createSVGElement({\n          element: 'rect',\n          attr: {\n            id: 'selectorRubberBand',\n            fill: '#22C',\n            'fill-opacity': 0.15,\n            stroke: '#22C',\n            'stroke-width': 0.5,\n            display: 'none',\n            style: 'pointer-events:none'\n          }\n        })\n      );\n    }\n    return this.rubberBandBox;\n  }\n}\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:select.SVGFactory\n */\n/**\n * @function module:select.SVGFactory#createSVGElement\n * @param {module:utilities.EditorContext#addSVGElementFromJson} jsonMap\n * @returns {SVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgRoot\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#getCurrentZoom\n * @returns {Float}\n */\n\n/**\n * @typedef {GenericArray} module:select.Dimensions\n * @property {Integer} length 2\n * @property {Float} 0 Width\n * @property {Float} 1 Height\n */\n/**\n * @typedef {PlainObject} module:select.Config\n * @property {string} imgPath\n * @property {module:select.Dimensions} dimensions\n */\n\n/**\n * Initializes this module.\n * @function module:select.init\n * @param {module:select.Config} config - An object containing configurable parameters (imgPath)\n * @param {module:select.SVGFactory} svgFactory - An object implementing the SVGFactory interface.\n * @returns {undefined}\n */\nexport const init = function (config, svgFactory) {\n  config_ = config;\n  svgFactory_ = svgFactory;\n  selectorManager_ = new SelectorManager();\n};\n\n/**\n * @function module:select.getSelectorManager\n * @returns {module:select.SelectorManager} The SelectorManager instance.\n */\nexport const getSelectorManager = () => selectorManager_;\n","/* globals jQuery */\n/**\n * Manipulating coordinates\n * @module coords\n * @license MIT\n */\n\nimport './svgpathseg.js';\nimport {\n  snapToGrid, assignAttributes, getBBox, getRefElem, findDefs\n} from './utilities.js';\nimport {\n  transformPoint, transformListToTransform, matrixMultiply, transformBox\n} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\n// this is how we map paths to our preferred relative segment types\nconst pathMap = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];\n\n/**\n * @interface module:coords.EditorContext\n */\n/**\n * @function module:coords.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:coords.EditorContext#getDrawing\n * @returns {module:draw.Drawing}\n*/\n/**\n * @function module:coords.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\nlet editorContext_ = null;\n\n/**\n* @function module:coords.init\n* @param {module:coords.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n};\n\n/**\n * Applies coordinate changes to an element based on the given matrix.\n * @function module:coords.remapElement\n * @implements {module:path.EditorContext#remapElement}\n*/\nexport const remapElement = function (selected, changes, m) {\n  const remap = function (x, y) { return transformPoint(x, y, m); },\n    scalew = function (w) { return m.a * w; },\n    scaleh = function (h) { return m.d * h; },\n    doSnapping = editorContext_.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',\n    finishUp = function () {\n      if (doSnapping) {\n        for (const o in changes) {\n          changes[o] = snapToGrid(changes[o]);\n        }\n      }\n      assignAttributes(selected, changes, 1000, true);\n    },\n    box = getBBox(selected);\n\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = selected.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      if (m.a < 0 || m.d < 0) {\n        const grad = getRefElem(attrVal);\n        const newgrad = grad.cloneNode(true);\n        if (m.a < 0) {\n          // flip x\n          const x1 = newgrad.getAttribute('x1');\n          const x2 = newgrad.getAttribute('x2');\n          newgrad.setAttribute('x1', -(x1 - 1));\n          newgrad.setAttribute('x2', -(x2 - 1));\n        }\n\n        if (m.d < 0) {\n          // flip y\n          const y1 = newgrad.getAttribute('y1');\n          const y2 = newgrad.getAttribute('y2');\n          newgrad.setAttribute('y1', -(y1 - 1));\n          newgrad.setAttribute('y2', -(y2 - 1));\n        }\n        newgrad.id = editorContext_.getDrawing().getNextId();\n        findDefs().append(newgrad);\n        selected.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n\n      // Not really working :(\n      // if (selected.tagName === 'path') {\n      //   reorientGrads(selected, m);\n      // }\n    }\n  }\n\n  const elName = selected.tagName;\n  if (elName === 'g' || elName === 'text' || elName === 'tspan' || elName === 'use') {\n    // if it was a translate, then just update x,y\n    if (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && (m.e !== 0 || m.f !== 0)) {\n      // [T][M] = [M][T']\n      // therefore [T'] = [M_inv][T][M]\n      const existing = transformListToTransform(selected).matrix,\n        tNew = matrixMultiply(existing.inverse(), m, existing);\n      changes.x = parseFloat(changes.x) + tNew.e;\n      changes.y = parseFloat(changes.y) + tNew.f;\n    } else {\n      // we just absorb all matrices into the element and don't do any remapping\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    }\n  }\n\n  // now we have a set of changes and an applied reduced transform list\n  // we apply the changes directly to the DOM\n  switch (elName) {\n  case 'foreignObject':\n  case 'rect':\n  case 'image': {\n    // Allow images to be inverted (give them matrix when flipped)\n    if (elName === 'image' && (m.a < 0 || m.d < 0)) {\n      // Convert to matrix\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    } else {\n      const pt1 = remap(changes.x, changes.y);\n      changes.width = scalew(changes.width);\n      changes.height = scaleh(changes.height);\n      changes.x = pt1.x + Math.min(0, changes.width);\n      changes.y = pt1.y + Math.min(0, changes.height);\n      changes.width = Math.abs(changes.width);\n      changes.height = Math.abs(changes.height);\n    }\n    finishUp();\n    break;\n  } case 'ellipse': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    changes.rx = scalew(changes.rx);\n    changes.ry = scaleh(changes.ry);\n    changes.rx = Math.abs(changes.rx);\n    changes.ry = Math.abs(changes.ry);\n    finishUp();\n    break;\n  } case 'circle': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    // take the minimum of the new selected box's dimensions for the new circle radius\n    const tbox = transformBox(box.x, box.y, box.width, box.height, m);\n    const w = tbox.tr.x - tbox.tl.x, h = tbox.bl.y - tbox.tl.y;\n    changes.r = Math.min(w / 2, h / 2);\n\n    if (changes.r) { changes.r = Math.abs(changes.r); }\n    finishUp();\n    break;\n  } case 'line': {\n    const pt1 = remap(changes.x1, changes.y1);\n    const pt2 = remap(changes.x2, changes.y2);\n    changes.x1 = pt1.x;\n    changes.y1 = pt1.y;\n    changes.x2 = pt2.x;\n    changes.y2 = pt2.y;\n  } // Fallthrough\n  case 'text':\n  case 'tspan':\n  case 'use': {\n    finishUp();\n    break;\n  } case 'g': {\n    const gsvg = $(selected).data('gsvg');\n    if (gsvg) {\n      assignAttributes(gsvg, changes, 1000, true);\n    }\n    break;\n  } case 'polyline':\n  case 'polygon': {\n    const len = changes.points.length;\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      const {x, y} = remap(pt.x, pt.y);\n      changes.points[i].x = x;\n      changes.points[i].y = y;\n    }\n\n    // const len = changes.points.length;\n    let pstr = '';\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      pstr += pt.x + ',' + pt.y + ' ';\n    }\n    selected.setAttribute('points', pstr);\n    break;\n  } case 'path': {\n    const segList = selected.pathSegList;\n    let len = segList.numberOfItems;\n    changes.d = [];\n    for (let i = 0; i < len; ++i) {\n      const seg = segList.getItem(i);\n      changes.d[i] = {\n        type: seg.pathSegType,\n        x: seg.x,\n        y: seg.y,\n        x1: seg.x1,\n        y1: seg.y1,\n        x2: seg.x2,\n        y2: seg.y2,\n        r1: seg.r1,\n        r2: seg.r2,\n        angle: seg.angle,\n        largeArcFlag: seg.largeArcFlag,\n        sweepFlag: seg.sweepFlag\n      };\n    }\n\n    len = changes.d.length;\n    const firstseg = changes.d[0],\n      currentpt = remap(firstseg.x, firstseg.y);\n    changes.d[0].x = currentpt.x;\n    changes.d[0].y = currentpt.y;\n    for (let i = 1; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      // if absolute or first segment, we want to remap x, y, x1, y1, x2, y2\n      // if relative, we want to scalew, scaleh\n      if (type % 2 === 0) { // absolute\n        const thisx = (seg.x !== undefined) ? seg.x : currentpt.x, // for V commands\n          thisy = (seg.y !== undefined) ? seg.y : currentpt.y; // for H commands\n        const pt = remap(thisx, thisy);\n        const pt1 = remap(seg.x1, seg.y1);\n        const pt2 = remap(seg.x2, seg.y2);\n        seg.x = pt.x;\n        seg.y = pt.y;\n        seg.x1 = pt1.x;\n        seg.y1 = pt1.y;\n        seg.x2 = pt2.x;\n        seg.y2 = pt2.y;\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      } else { // relative\n        seg.x = scalew(seg.x);\n        seg.y = scaleh(seg.y);\n        seg.x1 = scalew(seg.x1);\n        seg.y1 = scaleh(seg.y1);\n        seg.x2 = scalew(seg.x2);\n        seg.y2 = scaleh(seg.y2);\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      }\n    } // for each segment\n\n    let dstr = '';\n    len = changes.d.length;\n    for (let i = 0; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      dstr += pathMap[type];\n      switch (type) {\n      case 13: // relative horizontal line (h)\n      case 12: // absolute horizontal line (H)\n        dstr += seg.x + ' ';\n        break;\n      case 15: // relative vertical line (v)\n      case 14: // absolute vertical line (V)\n        dstr += seg.y + ' ';\n        break;\n      case 3: // relative move (m)\n      case 5: // relative line (l)\n      case 19: // relative smooth quad (t)\n      case 2: // absolute move (M)\n      case 4: // absolute line (L)\n      case 18: // absolute smooth quad (T)\n        dstr += seg.x + ',' + seg.y + ' ';\n        break;\n      case 7: // relative cubic (c)\n      case 6: // absolute cubic (C)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x2 + ',' + seg.y2 + ' ' +\n          seg.x + ',' + seg.y + ' ';\n        break;\n      case 9: // relative quad (q)\n      case 8: // absolute quad (Q)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 11: // relative elliptical arc (a)\n      case 10: // absolute elliptical arc (A)\n        dstr += seg.r1 + ',' + seg.r2 + ' ' + seg.angle + ' ' + (+seg.largeArcFlag) +\n          ' ' + (+seg.sweepFlag) + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 17: // relative smooth cubic (s)\n      case 16: // absolute smooth cubic (S)\n        dstr += seg.x2 + ',' + seg.y2 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      }\n    }\n\n    selected.setAttribute('d', dstr);\n    break;\n  }\n  }\n};\n","/* eslint-disable indent */\n/* globals jQuery, jsPDF */\n/**\n * Numerous tools for working with the editor's \"canvas\"\n * @module svgcanvas\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Pavol Rusnak, 2010 Jeff Schiller\n *\n */\n\n/* Dependencies:\n1. Also expects jQuery UI for `svgCanvasToString` and\n`convertToGroup` use of `:data()` selector\n*/\n\n// Todo: Obtain/adapt latest jsPDF to utilize ES Module for `jsPDF`/avoid global\n\nimport './svgpathseg.js';\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\n\nimport * as draw from './draw.js';\nimport * as pathModule from './path.js';\nimport {sanitizeSvg} from './sanitize.js';\nimport {getReverseNS, NS} from './namespaces.js';\nimport {importSetGlobal, importScript} from './external/dynamic-import-polyfill/importModule.js';\nimport {\n  text2xml, assignAttributes, cleanupElement, getElem, getUrlFromAttr,\n  findDefs, getHref, setHref, getRefElem, getRotationAngle, getPathBBox,\n  preventClickDefault, snapToGrid, walkTree, walkTreePost,\n  getBBoxOfElementAsPath, convertToPath, toXml, encode64, decode64,\n  dataURLToObjectURL, createObjectURL,\n  getVisibleElements, dropXMLInteralSubset,\n  init as utilsInit, getBBox as utilsGetBBox, getStrokedBBoxDefaultVisible\n} from './utilities.js';\nimport * as history from './history.js';\nimport {\n  transformPoint, matrixMultiply, hasMatrixTransform, transformListToTransform,\n  getMatrix, snapToAngle, isIdentity, rectsIntersect, transformBox\n} from './math.js';\nimport {\n  convertToNum, convertAttrs, convertUnit, shortFloat, getTypeMap,\n  init as unitsInit\n} from './units.js';\nimport {\n  isGecko, isChrome, isIE, isWebkit, supportsNonScalingStroke, supportsGoodTextCharPos\n} from './browser.js'; // , supportsEditableText\nimport {\n  getTransformList, resetListMap,\n  SVGTransformList as SVGEditTransformList\n} from './svgtransformlist.js';\nimport {\n  remapElement,\n  init as coordsInit\n} from './coords.js';\nimport {\n  recalculateDimensions,\n  init as recalculateInit\n} from './recalculate.js';\nimport {\n  getSelectorManager,\n  init as selectInit\n} from './select.js';\n\nconst $ = jqPluginSVG(jQuery);\nconst {\n  MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand, BatchCommand, UndoManager, HistoryEventTypes\n} = history;\n\nif (!window.console) {\n  window.console = {};\n  window.console.log = function (str) {};\n  window.console.dir = function (str) {};\n}\n\nif (window.opera) {\n  window.console.log = function (str) { window.opera.postError(str); };\n  window.console.dir = function (str) {};\n}\n\n/**\n* The main SvgCanvas class that manages all SVG-related functions.\n* @memberof module:svgcanvas\n*\n* @borrows module:coords.remapElement as #remapElement\n* @borrows module:recalculate.recalculateDimensions as #recalculateDimensions\n*\n* @borrows module:utilities.cleanupElement as #cleanupElement\n* @borrows module:utilities.getStrokedBBoxDefaultVisible as #getStrokedBBox\n* @borrows module:utilities.getVisibleElements as #getVisibleElements\n* @borrows module:utilities.findDefs as #findDefs\n* @borrows module:utilities.getUrlFromAttr as #getUrlFromAttr\n* @borrows module:utilities.getHref as #getHref\n* @borrows module:utilities.setHref as #setHref\n* @borrows module:utilities.getRotationAngle as #getRotationAngle\n* @borrows module:utilities.getBBox as #getBBox\n* @borrows module:utilities.getElem as #getElem\n* @borrows module:utilities.getRefElem as #getRefElem\n* @borrows module:utilities.assignAttributes as #assignAttributes\n*\n* @borrows module:SVGTransformList.getTransformList as #getTransformList\n* @borrows module:math.matrixMultiply as #matrixMultiply\n* @borrows module:math.hasMatrixTransform as #hasMatrixTransform\n* @borrows module:math.transformListToTransform as #transformListToTransform\n* @borrows module:units.convertToNum as #convertToNum\n* @borrows module:sanitize.sanitizeSvg as #sanitizeSvg\n* @borrows module:path.pathActions.linkControlPoints as #linkControlPoints\n*/\nclass SvgCanvas {\n  /**\n  * @param {HTMLElement} container - The container HTML element that should hold the SVG root element\n  * @param {module:SVGEditor.curConfig} config - An object that contains configuration data\n  */\n  constructor (container, config) {\n// Alias Namespace constants\n\n// Default configuration options\nconst curConfig = {\n  show_outside_canvas: true,\n  selectNew: true,\n  dimensions: [640, 480]\n};\n\n// Update config with new one if given\nif (config) {\n  $.extend(curConfig, config);\n}\n\n// Array with width/height of canvas\nconst {dimensions} = curConfig;\n\nconst canvas = this;\n\n// \"document\" element associated with the container (same as window.document using default svg-editor.js)\n// NOTE: This is not actually a SVG document, but an HTML document.\nconst svgdoc = container.ownerDocument;\n\n// This is a container for the document being edited, not the document itself.\n/**\n * @name module:svgcanvas~svgroot\n * @type {SVGSVGElement}\n */\nconst svgroot = svgdoc.importNode(\n  text2xml(\n    '<svg id=\"svgroot\" xmlns=\"' + NS.SVG + '\" xlinkns=\"' + NS.XLINK + '\" ' +\n      'width=\"' + dimensions[0] + '\" height=\"' + dimensions[1] + '\" x=\"' + dimensions[0] + '\" y=\"' + dimensions[1] + '\" overflow=\"visible\">' +\n      '<defs>' +\n        '<filter id=\"canvashadow\" filterUnits=\"objectBoundingBox\">' +\n          '<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"4\" result=\"blur\"/>' +\n          '<feOffset in=\"blur\" dx=\"5\" dy=\"5\" result=\"offsetBlur\"/>' +\n          '<feMerge>' +\n            '<feMergeNode in=\"offsetBlur\"/>' +\n            '<feMergeNode in=\"SourceGraphic\"/>' +\n          '</feMerge>' +\n        '</filter>' +\n      '</defs>' +\n    '</svg>'\n  ).documentElement,\n  true\n);\ncontainer.append(svgroot);\n\n/**\n * The actual element that represents the final output SVG element\n * @name module:svgcanvas~svgcontent\n * @type {SVGSVGElement}\n */\nlet svgcontent = svgdoc.createElementNS(NS.SVG, 'svg');\n\n/**\n* This function resets the svgcontent element while keeping it in the DOM.\n* @function module:svgcanvas.SvgCanvas#clearSvgContentElement\n* @returns {undefined}\n*/\nconst clearSvgContentElement = canvas.clearSvgContentElement = function () {\n  $(svgcontent).empty();\n\n  // TODO: Clear out all other attributes first?\n  $(svgcontent).attr({\n    id: 'svgcontent',\n    width: dimensions[0],\n    height: dimensions[1],\n    x: dimensions[0],\n    y: dimensions[1],\n    overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden',\n    xmlns: NS.SVG,\n    'xmlns:se': NS.SE,\n    'xmlns:xlink': NS.XLINK\n  }).appendTo(svgroot);\n\n  // TODO: make this string optional and set by the client\n  const comment = svgdoc.createComment(' Created with SVG-edit - https://github.com/SVG-Edit/svgedit');\n  svgcontent.append(comment);\n};\nclearSvgContentElement();\n\n// Prefix string for element IDs\nlet idprefix = 'svg_';\n\n/**\n* Changes the ID prefix to the given value.\n* @function module:svgcanvas.SvgCanvas#setIdPrefix\n* @param {string} p - String with the new prefix\n* @returns {undefined}\n*/\ncanvas.setIdPrefix = function (p) {\n  idprefix = p;\n};\n\n/**\n* Current draw.Drawing object\n* @type {module:draw.Drawing}\n* @name module:svgcanvas.SvgCanvas#current_drawing_\n*/\ncanvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n/**\n* Returns the current Drawing.\n* @function module:svgcanvas.SvgCanvas#getCurrentDrawing\n* @implements {module:draw.DrawCanvasInit#getCurrentDrawing}\n*/\nconst getCurrentDrawing = canvas.getCurrentDrawing = function () {\n  return canvas.current_drawing_;\n};\n\n/**\n* Float displaying the current zoom level (1 = 100%, .5 = 50%, etc)\n* @type {Float}\n*/\nlet currentZoom = 1;\n\n// pointer to current group (for in-group editing)\nlet currentGroup = null;\n\n// Object containing data for the currently selected styles\nconst allProperties = {\n  shape: {\n    fill: (curConfig.initFill.color === 'none' ? '' : '#') + curConfig.initFill.color,\n    fill_paint: null,\n    fill_opacity: curConfig.initFill.opacity,\n    stroke: '#' + curConfig.initStroke.color,\n    stroke_paint: null,\n    stroke_opacity: curConfig.initStroke.opacity,\n    stroke_width: curConfig.initStroke.width,\n    stroke_dasharray: 'none',\n    stroke_linejoin: 'miter',\n    stroke_linecap: 'butt',\n    opacity: curConfig.initOpacity\n  }\n};\n\nallProperties.text = $.extend(true, {}, allProperties.shape);\n$.extend(allProperties.text, {\n  fill: '#000000',\n  stroke_width: curConfig.text && curConfig.text.stroke_width,\n  font_size: curConfig.text && curConfig.text.font_size,\n  font_family: curConfig.text && curConfig.text.font_family\n});\n\n// Current shape style properties\nconst curShape = allProperties.shape;\n\n// Array with all the currently selected elements\n// default size of 1 until it needs to grow bigger\nlet selectedElements = [];\n\n/**\n* @typedef {PlainObject} module:svgcanvas.SVGAsJSON\n* @property {string} element\n* @property {PlainObject.<string, string>} attr\n* @property {module:svgcanvas.SVGAsJSON[]} children\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @param {Text|Element} data\n* @returns {module:svgcanvas.SVGAsJSON}\n*/\nconst getJsonFromSvgElement = this.getJsonFromSvgElement = function (data) {\n  // Text node\n  if (data.nodeType === 3) return data.nodeValue;\n\n  const retval = {\n    element: data.tagName,\n    // namespace: nsMap[data.namespaceURI],\n    attr: {},\n    children: []\n  };\n\n  // Iterate attributes\n  for (let i = 0, attr; (attr = data.attributes[i]); i++) {\n    retval.attr[attr.name] = attr.value;\n  }\n\n  // Iterate children\n  for (let i = 0, node; (node = data.childNodes[i]); i++) {\n    retval.children[i] = getJsonFromSvgElement(node);\n  }\n\n  return retval;\n};\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @function module:svgcanvas.SvgCanvas#addSVGElementFromJson\n* @implements {module:utilities.EditorContext#addSVGElementFromJson|module:path.EditorContext#addSVGElementFromJson}\n*/\nconst addSVGElementFromJson = this.addSVGElementFromJson = function (data) {\n  if (typeof data === 'string') return svgdoc.createTextNode(data);\n\n  let shape = getElem(data.attr.id);\n  // if shape is a path but we need to create a rect/ellipse, then remove the path\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (shape && data.element !== shape.tagName) {\n    shape.remove();\n    shape = null;\n  }\n  if (!shape) {\n    const ns = data.namespace || NS.SVG;\n    shape = svgdoc.createElementNS(ns, data.element);\n    if (currentLayer) {\n      (currentGroup || currentLayer).append(shape);\n    }\n  }\n  if (data.curStyles) {\n    assignAttributes(shape, {\n      fill: curShape.fill,\n      stroke: curShape.stroke,\n      'stroke-width': curShape.stroke_width,\n      'stroke-dasharray': curShape.stroke_dasharray,\n      'stroke-linejoin': curShape.stroke_linejoin,\n      'stroke-linecap': curShape.stroke_linecap,\n      'stroke-opacity': curShape.stroke_opacity,\n      'fill-opacity': curShape.fill_opacity,\n      opacity: curShape.opacity / 2,\n      style: 'pointer-events:inherit'\n    }, 100);\n  }\n  assignAttributes(shape, data.attr, 100);\n  cleanupElement(shape);\n\n  // Children\n  if (data.children) {\n    data.children.forEach((child) => {\n      shape.append(addSVGElementFromJson(child));\n    });\n  }\n\n  return shape;\n};\n\ncanvas.getTransformList = getTransformList;\n\ncanvas.matrixMultiply = matrixMultiply;\ncanvas.hasMatrixTransform = hasMatrixTransform;\ncanvas.transformListToTransform = transformListToTransform;\n\n/**\n* @implements {module:utilities.EditorContext#getBaseUnit}\n*/\nconst getBaseUnit = () => { return curConfig.baseUnit; };\n\n/**\n* initialize from units.js.\n* Send in an object implementing the ElementContainer interface (see units.js)\n*/\nunitsInit(\n  /**\n  * @implements {module:units.ElementContainer}\n  */\n  {\n    getBaseUnit,\n    getElement: getElem,\n    getHeight () { return svgcontent.getAttribute('height') / currentZoom; },\n    getWidth () { return svgcontent.getAttribute('width') / currentZoom; },\n    getRoundDigits () { return saveOptions.round_digits; }\n  }\n);\n\ncanvas.convertToNum = convertToNum;\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @implements {module:draw.DrawCanvasInit#getSVGContent|module:utilities.EditorContext#getSVGContent}\n*/\nconst getSVGContent = () => { return svgcontent; };\n\n/**\n* Should really be an intersection with all needing to apply rather than a union.\n* @function module:svgcanvas.SvgCanvas#getSelectedElements\n* @implements {module:utilities.EditorContext#getSelectedElements|module:draw.DrawCanvasInit#getSelectedElements|module:path.EditorContext#getSelectedElements}\n*/\nconst getSelectedElements = this.getSelectedElems = function () {\n  return selectedElements;\n};\n\nconst pathActions = pathModule.pathActions;\n\n/**\n* This should actually be an intersection as all interfaces should be met.\n* @implements {module:utilities.EditorContext#getSVGRoot|module:recalculate.EditorContext#getSVGRoot|module:coords.EditorContext#getSVGRoot|module:path.EditorContext#getSVGRoot}\n*/\nconst getSVGRoot = () => svgroot;\n\nutilsInit(\n  /**\n  * @implements {module:utilities.EditorContext}\n  */\n  {\n    pathActions, // Ok since not modifying\n    getSVGContent,\n    addSVGElementFromJson,\n    getSelectedElements,\n    getDOMDocument () { return svgdoc; },\n    getDOMContainer () { return container; },\n    getSVGRoot,\n    // TODO: replace this mostly with a way to get the current drawing.\n    getBaseUnit,\n    getSnappingStep () { return curConfig.snappingStep; }\n  }\n);\n\ncanvas.findDefs = findDefs;\ncanvas.getUrlFromAttr = getUrlFromAttr;\ncanvas.getHref = getHref;\ncanvas.setHref = setHref;\n/* const getBBox = */ canvas.getBBox = utilsGetBBox;\ncanvas.getRotationAngle = getRotationAngle;\ncanvas.getElem = getElem;\ncanvas.getRefElem = getRefElem;\ncanvas.assignAttributes = assignAttributes;\n\nthis.cleanupElement = cleanupElement;\n\n/**\n* This should actually be an intersection not a union as all should apply.\n* @implements {module:coords.EditorContext|module:path.EditorContext}\n*/\nconst getGridSnapping = () => { return curConfig.gridSnapping; };\n\ncoordsInit(\n  /**\n  * @implements {module:coords.EditorContext}\n  */\n  {\n    getDrawing () { return getCurrentDrawing(); },\n    getSVGRoot,\n    getGridSnapping\n  }\n);\nthis.remapElement = remapElement;\n\nrecalculateInit(\n  /**\n  * @implements {module:recalculate.EditorContext}\n  */\n  {\n    getSVGRoot,\n    getStartTransform () { return startTransform; },\n    setStartTransform (transform) { startTransform = transform; }\n  }\n);\nthis.recalculateDimensions = recalculateDimensions;\n\n// import from sanitize.js\nconst nsMap = getReverseNS();\ncanvas.sanitizeSvg = sanitizeSvg;\n\n/**\n* @name undoMgr\n* @memberof module:svgcanvas.SvgCanvas#\n* @type {module:history.HistoryEventHandler}\n*/\nconst undoMgr = canvas.undoMgr = new UndoManager({\n  /**\n   * @param {string} eventType One of the HistoryEvent types\n   * @param {module:history.HistoryCommand} cmd Fulfills the HistoryCommand interface\n   * @fires module:svgcanvas.SvgCanvas#event:changed\n   * @returns {undefined}\n   */\n  handleHistoryEvent (eventType, cmd) {\n    const EventTypes = HistoryEventTypes;\n    // TODO: handle setBlurOffsets.\n    if (eventType === EventTypes.BEFORE_UNAPPLY || eventType === EventTypes.BEFORE_APPLY) {\n      canvas.clearSelection();\n    } else if (eventType === EventTypes.AFTER_APPLY || eventType === EventTypes.AFTER_UNAPPLY) {\n      const elems = cmd.elements();\n      canvas.pathActions.clear();\n      call('changed', elems);\n      const cmdType = cmd.type();\n      const isApply = (eventType === EventTypes.AFTER_APPLY);\n      if (cmdType === MoveElementCommand.type()) {\n        const parent = isApply ? cmd.newParent : cmd.oldParent;\n        if (parent === svgcontent) {\n          draw.identifyLayers();\n        }\n      } else if (cmdType === InsertElementCommand.type() ||\n          cmdType === RemoveElementCommand.type()) {\n        if (cmd.parent === svgcontent) {\n          draw.identifyLayers();\n        }\n        if (cmdType === InsertElementCommand.type()) {\n          if (isApply) { restoreRefElems(cmd.elem); }\n        } else {\n          if (!isApply) { restoreRefElems(cmd.elem); }\n        }\n        if (cmd.elem.tagName === 'use') {\n          setUseData(cmd.elem);\n        }\n      } else if (cmdType === ChangeElementCommand.type()) {\n        // if we are changing layer names, re-identify all layers\n        if (cmd.elem.tagName === 'title' &&\n          cmd.elem.parentNode.parentNode === svgcontent\n        ) {\n          draw.identifyLayers();\n        }\n        const values = isApply ? cmd.newValues : cmd.oldValues;\n        // If stdDeviation was changed, update the blur.\n        if (values.stdDeviation) {\n          canvas.setBlurOffsets(cmd.elem.parentNode, values.stdDeviation);\n        }\n        // This is resolved in later versions of webkit, perhaps we should\n        // have a featured detection for correct 'use' behavior?\n        // ——————————\n        // Remove & Re-add hack for Webkit (issue 775)\n        // if (cmd.elem.tagName === 'use' && isWebkit()) {\n        //  const {elem} = cmd;\n        //  if (!elem.getAttribute('x') && !elem.getAttribute('y')) {\n        //    const parent = elem.parentNode;\n        //    const sib = elem.nextSibling;\n        //    elem.remove();\n        //    parent.insertBefore(elem, sib);\n        //    // Ok to replace above with this? `sib.before(elem);`\n        //  }\n        // }\n      }\n    }\n  }\n});\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas~addCommandToHistory\n* @implements {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory}\n*/\nconst addCommandToHistory = function (cmd) {\n  canvas.undoMgr.addCommandToHistory(cmd);\n};\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#getZoom\n* @implements {module:path.EditorContext#getCurrentZoom|module:select.SVGFactory#getCurrentZoom}\n*/\nconst getCurrentZoom = this.getZoom = function () { return currentZoom; };\n\n/**\n* This method rounds the incoming value to the nearest value based on the `currentZoom`\n* @function module:svgcanvas.SvgCanvas#round\n* @implements {module:path.EditorContext#round}\n*/\nconst round = this.round = function (val) {\n  return parseInt(val * currentZoom, 10) / currentZoom;\n};\n\nselectInit(\n  curConfig,\n  /**\n  * Export to select.js\n  * @implements {module:select.SVGFactory}\n  */\n  {\n    createSVGElement (jsonMap) { return canvas.addSVGElementFromJson(jsonMap); },\n    svgRoot () { return svgroot; },\n    svgContent () { return svgcontent; },\n    getCurrentZoom\n  }\n);\n/**\n* This object manages selectors for us\n* @name module:svgcanvas.SvgCanvas#selectorManager\n* @type {module:select.SelectorManager}\n*/\nconst selectorManager = this.selectorManager = getSelectorManager();\n\n/**\n* @function module:svgcanvas.SvgCanvas#getNextId\n* @implements {module:path.EditorContext#getNextId}\n*/\nconst getNextId = canvas.getNextId = function () {\n  return getCurrentDrawing().getNextId();\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getId\n* @implements {module:path.EditorContext#getId}\n*/\nconst getId = canvas.getId = function () {\n  return getCurrentDrawing().getId();\n};\n\n/**\n* The \"implements\" should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#call\n* @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}\n* @param {\"selected\"|\"changed\"|\"contextset\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String with the event name\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.\n* @returns {undefined}\n*/\nconst call = function (ev, arg) {\n  if (events[ev]) {\n    return events[ev](window, arg);\n  }\n};\n\n/**\n* Clears the selection. The 'selected' handler is then optionally called.\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#clearSelection\n* @implements {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst clearSelection = this.clearSelection = function (noCall) {\n  selectedElements.forEach((elem) => {\n    if (elem == null) {\n      return;\n    }\n    selectorManager.releaseSelector(elem);\n  });\n  selectedElements = [];\n\n  if (!noCall) { call('selected', selectedElements); }\n};\n\n/**\n* Adds a list of elements to the selection. The 'selected' handler is then called.\n* @function module:svgcanvas.SvgCanvas#addToSelection\n* @implements {module:path.EditorContext#addToSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst addToSelection = this.addToSelection = function (elemsToAdd, showGrips) {\n  if (!elemsToAdd.length) { return; }\n  // find the first null in our selectedElements array\n\n  let j = 0;\n  while (j < selectedElements.length) {\n    if (selectedElements[j] == null) {\n      break;\n    }\n    ++j;\n  }\n\n  // now add each element consecutively\n  let i = elemsToAdd.length;\n  while (i--) {\n    let elem = elemsToAdd[i];\n    if (!elem) { continue; }\n    const bbox = utilsGetBBox(elem);\n    if (!bbox) { continue; }\n\n    if (elem.tagName === 'a' && elem.childNodes.length === 1) {\n      // Make \"a\" element's child be the selected element\n      elem = elem.firstChild;\n    }\n\n    // if it's not already there, add it\n    if (!selectedElements.includes(elem)) {\n      selectedElements[j] = elem;\n\n      // only the first selectedBBoxes element is ever used in the codebase these days\n      // if (j === 0) selectedBBoxes[0] = utilsGetBBox(elem);\n      j++;\n      const sel = selectorManager.requestSelector(elem, bbox);\n\n      if (selectedElements.length > 1) {\n        sel.showGrips(false);\n      }\n    }\n  }\n  call('selected', selectedElements);\n\n  if (showGrips || selectedElements.length === 1) {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(true);\n  } else {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(false);\n  }\n\n  // make sure the elements are in the correct order\n  // See: https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-compareDocumentPosition\n\n  selectedElements.sort(function (a, b) {\n    if (a && b && a.compareDocumentPosition) {\n      return 3 - (b.compareDocumentPosition(a) & 6);\n    }\n    if (a == null) {\n      return 1;\n    }\n  });\n\n  // Make sure first elements are not null\n  while (selectedElements[0] == null) {\n    selectedElements.shift(0);\n  }\n};\n\n/**\n* @implements {module:path.EditorContext#getOpacity}\n*/\nconst getOpacity = function () {\n  return curShape.opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMouseTarget\n* @implements {module:path.EditorContext#getMouseTarget}\n*/\nconst getMouseTarget = this.getMouseTarget = function (evt) {\n  if (evt == null) {\n    return null;\n  }\n  let mouseTarget = evt.target;\n\n  // if it was a <use>, Opera and WebKit return the SVGElementInstance\n  if (mouseTarget.correspondingUseElement) { mouseTarget = mouseTarget.correspondingUseElement; }\n\n  // for foreign content, go up until we find the foreignObject\n  // WebKit browsers set the mouse target to the svgcanvas div\n  if ([NS.MATH, NS.HTML].includes(mouseTarget.namespaceURI) &&\n    mouseTarget.id !== 'svgcanvas'\n  ) {\n    while (mouseTarget.nodeName !== 'foreignObject') {\n      mouseTarget = mouseTarget.parentNode;\n      if (!mouseTarget) { return svgroot; }\n    }\n  }\n\n  // Get the desired mouseTarget with jQuery selector-fu\n  // If it's root-like, select the root\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if ([svgroot, container, svgcontent, currentLayer].includes(mouseTarget)) {\n    return svgroot;\n  }\n\n  const $target = $(mouseTarget);\n\n  // If it's a selection grip, return the grip parent\n  if ($target.closest('#selectorParentGroup').length) {\n    // While we could instead have just returned mouseTarget,\n    // this makes it easier to indentify as being a selector grip\n    return selectorManager.selectorParentGroup;\n  }\n\n  while (mouseTarget.parentNode !== (currentGroup || currentLayer)) {\n    mouseTarget = mouseTarget.parentNode;\n  }\n\n  //\n  // // go up until we hit a child of a layer\n  // while (mouseTarget.parentNode.parentNode.tagName == 'g') {\n  //   mouseTarget = mouseTarget.parentNode;\n  // }\n  // Webkit bubbles the mouse event all the way up to the div, so we\n  // set the mouseTarget to the svgroot like the other browsers\n  // if (mouseTarget.nodeName.toLowerCase() == 'div') {\n  //   mouseTarget = svgroot;\n  // }\n\n  return mouseTarget;\n};\n\n/**\n* @namespace {module:path.pathActions} pathActions\n* @memberof module:svgcanvas.SvgCanvas#\n* @see module:path.pathActions\n*/\ncanvas.pathActions = pathActions;\n/**\n* @implements {module:path.EditorContext#resetD}\n*/\nfunction resetD (p) {\n  p.setAttribute('d', pathActions.convertPath(p));\n}\npathModule.init(\n  /**\n  * @implements {module:path.EditorContext}\n  */\n  {\n    selectorManager, // Ok since not changing\n    canvas, // Ok since not changing\n    call,\n    resetD,\n    round,\n    clearSelection,\n    addToSelection,\n    addCommandToHistory,\n    remapElement,\n    addSVGElementFromJson,\n    getGridSnapping,\n    getOpacity,\n    getSelectedElements,\n    getContainer () {\n      return container;\n    },\n    setStarted (s) {\n      started = s;\n    },\n    getRubberBox () {\n      return rubberBox;\n    },\n    setRubberBox (rb) {\n      rubberBox = rb;\n      return rubberBox;\n    },\n    /**\n     * @param {boolean} closedSubpath\n     * @param {SVGCircleElement[]} grips\n     * @fires module:svgcanvas.SvgCanvas#event:pointsAdded\n     * @fires module:svgcanvas.SvgCanvas#event:selected\n     * @returns {undefined}\n     */\n    addPtsToSelection ({closedSubpath, grips}) {\n      // TODO: Correct this:\n      pathActions.canDeleteNodes = true;\n      pathActions.closed_subpath = closedSubpath;\n      call('pointsAdded', {closedSubpath, grips});\n      call('selected', grips);\n    },\n    /**\n     * @param {ChangeElementCommand} cmd\n     * @param {SVGPathElement} elem\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    endChanges ({cmd, elem}) {\n      addCommandToHistory(cmd);\n      call('changed', [elem]);\n    },\n    getCurrentZoom,\n    getId,\n    getNextId,\n    getMouseTarget,\n    getCurrentMode () {\n      return currentMode;\n    },\n    setCurrentMode (cm) {\n      currentMode = cm;\n      return currentMode;\n    },\n    getDrawnPath () {\n      return drawnPath;\n    },\n    setDrawnPath (dp) {\n      drawnPath = dp;\n      return drawnPath;\n    },\n    getSVGRoot\n  }\n);\n\n// Interface strings, usually for title elements\nconst uiStrings = {};\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst refAttrs = ['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'];\n\nconst elData = $.data;\n\n// Animation element to change the opacity of any newly created element\nconst opacAni = document.createElementNS(NS.SVG, 'animate');\n$(opacAni).attr({\n  attributeName: 'opacity',\n  begin: 'indefinite',\n  dur: 1,\n  fill: 'freeze'\n}).appendTo(svgroot);\n\nconst restoreRefElems = function (elem) {\n  // Look for missing reference elements, restore any found\n  const attrs = $(elem).attr(refAttrs);\n  for (const o in attrs) {\n    const val = attrs[o];\n    if (val && val.startsWith('url(')) {\n      const id = getUrlFromAttr(val).substr(1);\n      const ref = getElem(id);\n      if (!ref) {\n        findDefs().append(removedElements[id]);\n        delete removedElements[id];\n      }\n    }\n  }\n\n  const childs = elem.getElementsByTagName('*');\n\n  if (childs.length) {\n    for (let i = 0, l = childs.length; i < l; i++) {\n      restoreRefElems(childs[i]);\n    }\n  }\n};\n\n// (function () {\n// TODO For Issue 208: this is a start on a thumbnail\n//  const svgthumb = svgdoc.createElementNS(NS.SVG, 'use');\n//  svgthumb.setAttribute('width', '100');\n//  svgthumb.setAttribute('height', '100');\n//  setHref(svgthumb, '#svgcontent');\n//  svgroot.append(svgthumb);\n// }());\n\n/**\n * @typedef {PlainObject} module:svgcanvas.SaveOptions\n * @property {boolean} apply\n * @property {\"embed\"} [image]\n * @property {Integer} round_digits\n */\n\n// Object to contain image data for raster images that were found encodable\nconst encodableImages = {},\n\n  // Object with save options\n  /**\n   * @type {module:svgcanvas.SaveOptions}\n   */\n  saveOptions = {round_digits: 5},\n\n  // Object with IDs for imported files, to see if one was already added\n  importIds = {},\n\n  // Current text style properties\n  curText = allProperties.text,\n\n  // Object to contain all included extensions\n  extensions = {},\n\n  // Map of deleted reference elements\n  removedElements = {};\n\nlet\n  // String with image URL of last loadable image\n  lastGoodImgUrl = curConfig.imgPath + 'logo.png',\n\n  // Boolean indicating whether or not a draw action has been started\n  started = false,\n\n  // String with an element's initial transform attribute value\n  startTransform = null,\n\n  // String indicating the current editor mode\n  currentMode = 'select',\n\n  // String with the current direction in which an element is being resized\n  currentResizeMode = 'none',\n\n  // Current general properties\n  curProperties = curShape,\n\n  // Array with selected elements' Bounding box object\n  // selectedBBoxes = new Array(1),\n\n  // The DOM element that was just selected\n  justSelected = null,\n\n  // DOM element for selection rectangle drawn by the user\n  rubberBox = null,\n\n  // Array of current BBoxes, used in getIntersectionList().\n  curBBoxes = [],\n\n  // Canvas point for the most recent right click\n  lastClickPoint = null;\n\n/**\n* @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus\n* @tutorial ExtensionDocs\n*/\n/**\n* @callback module:svgcanvas.ExtensionVarBuilder\n* @param {string} name The name of the extension\n*/\n/**\n* @todo Consider: Should this return an array by default, so extension results aren't overwritten?\n* @todo Would be easier to document if passing in object with key of action and vars as value; could then define an interface which tied both together\n* @function module:svgcanvas.SvgCanvas#runExtensions\n* @param {\"mouseDown\"|\"mouseMove\"|\"mouseUp\"|\"zoomChanged\"|\"IDsUpdated\"|\"canvasUpdated\"|\"toolButtonStateUpdate\"|\"selectedChanged\"|\"elementTransition\"|\"elementChanged\"|\"langReady\"|\"langChanged\"|\"addLangData\"|\"onNewDocument\"|\"workareaResized\"} action\n* @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]\n* @param {boolean} [returnArray]\n* @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.\n*/\nconst runExtensions = this.runExtensions = function (action, vars, returnArray) {\n  let result = returnArray ? [] : false;\n  $.each(extensions, function (name, ext) {\n    if (ext && action in ext) {\n      if (typeof vars === 'function') {\n        vars = vars(name); // ext, action\n      }\n      if (returnArray) {\n        result.push(ext[action](vars));\n      } else {\n        result = ext[action](vars);\n      }\n    }\n  });\n  return result;\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseDownStatus\n* @property {boolean} started Indicates that creating/editing has started\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseUpStatus\n* @property {boolean} keep Indicates if the current element should be kept\n* @property {boolean} started Indicates if editing should still be considered as \"started\"\n* @property {Element} element The element being affected\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionIDsUpdatedStatus\n* @property {string[]} remove Contains string IDs (used by `ext-connector.js`)\n*/\n\n/**\n * @interface module:svgcanvas.ExtensionInitResponse\n * @property {module:SVGEditor.ContextTool[]|PlainObject.<string, module:SVGEditor.ContextTool>} [context_tools]\n * @property {module:SVGEditor.Button[]|PlainObject.<Integer, module:SVGEditor.Button>} [buttons]\n * @property {string} [svgicons] The location of a local SVG or SVGz file\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseDown\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown} arg\n * @returns {undefined|module:svgcanvas.ExtensionMouseDownStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseMove\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseMove} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseUp\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseUp} arg\n * @returns {module:svgcanvas.ExtensionMouseUpStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#zoomChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#IDsUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} arg\n * @returns {module:svgcanvas.ExtensionIDsUpdatedStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#canvasUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#toolButtonStateUpdate\n * @param {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#selectedChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementTransition\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementTransition} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langReady\n * @param {module:svgcanvas.SvgCanvas#event:ext-langReady} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-langChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#addLangData\n * @param {module:svgcanvas.SvgCanvas#event:ext-addLangData} arg\n * @returns {Promise} Resolves to {@link module:locale.ExtensionLocaleData}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#onNewDocument\n * @param {module:svgcanvas.SvgCanvas#event:ext-onNewDocument} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#workareaResized\n * @param {module:svgcanvas.SvgCanvas#event:ext-workareaResized} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#callback\n * @this module:SVGEditor\n * @param {module:svgcanvas.SvgCanvas#event:ext-callback} arg\n * @returns {undefined}\n*/\n\n/**\n* @callback module:svgcanvas.ExtensionInitCallback\n* @this module:SVGEditor\n* @param {module:svgcanvas.ExtensionArgumentObject} arg\n* @returns {Promise} Resolves to [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse} or `undefined`\n*/\n/**\n* Add an extension to the editor.\n* @function module:svgcanvas.SvgCanvas#addExtension\n* @param {string} name - String with the ID of the extension. Used internally; no need for i18n.\n* @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data\n* @param {module:SVGEditor~ImportLocale} importLocale\n* @fires module:svgcanvas.SvgCanvas#event:extension_added\n* @throws {TypeError} If `extInitFunc` is not a function\n* @returns {Promise} Resolves to `undefined`\n*/\nthis.addExtension = async function (name, extInitFunc, importLocale) {\n  if (typeof extInitFunc !== 'function') {\n    throw new TypeError('Function argument expected for `svgcanvas.addExtension`');\n  }\n  if (!(name in extensions)) {\n    // Provide private vars/funcs here. Is there a better way to do this?\n    /**\n     * @typedef {module:svgcanvas.PrivateMethods} module:svgcanvas.ExtensionArgumentObject\n     * @property {SVGSVGElement} svgroot See {@link module:svgcanvas~svgroot}\n     * @property {SVGSVGElement} svgcontent See {@link module:svgcanvas~svgcontent}\n     * @property {!(string|Integer)} nonce See {@link module:draw.Drawing#getNonce}\n     * @property {module:select.SelectorManager} selectorManager\n     * @property {module:SVGEditor~ImportLocale} importLocale\n     */\n    /**\n     * @type {module:svgcanvas.ExtensionArgumentObject}\n     * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties\n     */\n    const argObj = $.extend(canvas.getPrivateMethods(), {\n      importLocale,\n      svgroot,\n      svgcontent,\n      nonce: getCurrentDrawing().getNonce(),\n      selectorManager\n    });\n    const extObj = await extInitFunc(argObj);\n    if (extObj) {\n      extObj.name = name;\n    }\n\n    extensions[name] = extObj;\n    return call('extension_added', extObj);\n  } else {\n    console.log('Cannot add extension \"' + name + '\", an extension by that name already exists.');\n  }\n};\n\n/**\n* This method sends back an array or a NodeList full of elements that\n* intersect the multi-select rubber-band-box on the currentLayer only.\n*\n* We brute-force `getIntersectionList` for browsers that do not support it (Firefox).\n*\n* Reference:\n* Firefox does not implement `getIntersectionList()`, see {@link https://bugzilla.mozilla.org/show_bug.cgi?id=501421}.\n* @function module:svgcanvas.SvgCanvas#getIntersectionList\n* @param {SVGRect} rect\n* @returns {Element[]|NodeList} Bbox elements\n*/\nconst getIntersectionList = this.getIntersectionList = function (rect) {\n  if (rubberBox == null) { return null; }\n\n  const parent = currentGroup || getCurrentDrawing().getCurrentLayer();\n\n  let rubberBBox;\n  if (!rect) {\n    rubberBBox = rubberBox.getBBox();\n    const bb = svgcontent.createSVGRect();\n\n    for (const o in rubberBBox) {\n      bb[o] = rubberBBox[o] / currentZoom;\n    }\n    rubberBBox = bb;\n  } else {\n    rubberBBox = svgcontent.createSVGRect();\n    rubberBBox.x = rect.x;\n    rubberBBox.y = rect.y;\n    rubberBBox.width = rect.width;\n    rubberBBox.height = rect.height;\n  }\n\n  let resultList = null;\n  if (!isIE) {\n    if (typeof svgroot.getIntersectionList === 'function') {\n      // Offset the bbox of the rubber box by the offset of the svgcontent element.\n      rubberBBox.x += parseInt(svgcontent.getAttribute('x'), 10);\n      rubberBBox.y += parseInt(svgcontent.getAttribute('y'), 10);\n\n      resultList = svgroot.getIntersectionList(rubberBBox, parent);\n    }\n  }\n\n  if (resultList == null || typeof resultList.item !== 'function') {\n    resultList = [];\n\n    if (!curBBoxes.length) {\n      // Cache all bboxes\n      curBBoxes = getVisibleElementsAndBBoxes(parent);\n    }\n    let i = curBBoxes.length;\n    while (i--) {\n      if (!rubberBBox.width) { continue; }\n      if (rectsIntersect(rubberBBox, curBBoxes[i].bbox)) {\n        resultList.push(curBBoxes[i].elem);\n      }\n    }\n  }\n\n  // addToSelection expects an array, but it's ok to pass a NodeList\n  // because using square-bracket notation is allowed:\n  // https://www.w3.org/TR/DOM-Level-2-Core/ecma-script-binding.html\n  return resultList;\n};\n\nthis.getStrokedBBox = getStrokedBBoxDefaultVisible;\n\nthis.getVisibleElements = getVisibleElements;\n\n/**\n* @typedef {PlainObject} ElementAndBBox\n* @property {Element} elem - The element\n* @property {module:utilities.BBoxObject} bbox - The element's BBox as retrieved from `getStrokedBBoxDefaultVisible`\n*/\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:svgcanvas.SvgCanvas#getVisibleElementsAndBBoxes\n* @param {Element} parent - The parent DOM element to search within\n* @returns {ElementAndBBox[]} An array with objects that include:\n*/\nconst getVisibleElementsAndBBoxes = this.getVisibleElementsAndBBoxes = function (parent) {\n  if (!parent) {\n    parent = $(svgcontent).children(); // Prevent layers from being included\n  }\n  const contentElems = [];\n  $(parent).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push({elem, bbox: getStrokedBBoxDefaultVisible([elem])});\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Wrap an SVG element into a group element, mark the group as 'gsvg'.\n* @function module:svgcanvas.SvgCanvas#groupSvgElem\n* @param {Element} elem - SVG element to wrap\n* @returns {undefined}\n*/\nconst groupSvgElem = this.groupSvgElem = function (elem) {\n  const g = document.createElementNS(NS.SVG, 'g');\n  elem.replaceWith(g);\n  $(g).append(elem).data('gsvg', elem)[0].id = getNextId();\n};\n\n// Set scope for these functions\n\n// Object to contain editor event names and callback functions\nconst events = {};\n\ncanvas.call = call;\n/**\n * Array of what was changed (elements, layers)\n * @event module:svgcanvas.SvgCanvas#event:changed\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:selected\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:transition\n * @type {Element[]}\n */\n/**\n * The Element is always `SVGGElement`?\n * If not `null`, will be the set current group element\n * @event module:svgcanvas.SvgCanvas#event:contextset\n * @type {null|Element}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:pointsAdded\n * @type {PlainObject}\n * @property {boolean} closedSubpath\n * @property {SVGCircleElement[]} grips Grips elements\n */\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomed\n * @type {PlainObject}\n * @property {Float} x\n * @property {Float} y\n * @property {Float} width\n * @property {Float} height\n * @property {0.5|2} factor\n * @see module:SVGEditor.BBoxObjectWithFactor\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:updateCanvas\n * @type {PlainObject}\n * @property {false} center\n * @property {module:math.XYObject} newCtr\n */\n/**\n * @typedef {PlainObject} module:svgcanvas.ExtensionInitResponsePlusName\n * @implements {module:svgcanvas.ExtensionInitResponse}\n * @property {string} name The extension's resolved ID (whether explicit or based on file name)\n */\n/**\n * Generalized extension object response of\n * [`init()`]{@link module:svgcanvas.ExtensionInitCallback}\n * along with the name of the extension.\n * @event module:svgcanvas.SvgCanvas#event:extension_added\n * @type {module:svgcanvas.ExtensionInitResponsePlusName|undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:extensions_added\n * @type {undefined}\n*/\n/**\n * @typedef {PlainObject} module:svgcanvas.Message\n * @property {Any} data The data\n * @property {string} origin The origin\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:message\n * @type {module:svgcanvas.Message}\n */\n/**\n * SVG canvas converted to string\n * @event module:svgcanvas.SvgCanvas#event:saved\n * @type {string}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:setnonce\n * @type {!(string|Integer)}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:unsetnonce\n * @type {undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomDone\n * @type {undefined}\n*/\n/**\n * @event module:svgcanvas.SvgCanvas#event:cleared\n * @type {undefined}\n*/\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:exported\n * @type {module:svgcanvas.ImageExportedResults}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:exportedPDF\n * @type {module:svgcanvas.PDFExportedResults}\n */\n/**\n * Creating a cover-all class until {@link https://github.com/jsdoc3/jsdoc/issues/1545} may be supported.\n * `undefined` may be returned by {@link module:svgcanvas.SvgCanvas#event:extension_added} if the extension's `init` returns `undefined` It is also the type for the following events \"zoomDone\", \"unsetnonce\", \"cleared\", and \"extensions_added\".\n * @event module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}\n */\n\n/**\n* @callback module:svgcanvas.EventHandler\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg\n* @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n*/\n\n/**\n* Attaches a callback function to an event.\n* @function module:svgcanvas.SvgCanvas#bind\n* @param {\"changed\"|\"contextset\"|\"selected\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String indicating the name of the event\n* @param {module:svgcanvas.EventHandler} f - The callback function to bind to the event\n* @returns {module:svgcanvas.EventHandler} The previous event\n*/\ncanvas.bind = function (ev, f) {\n  const old = events[ev];\n  events[ev] = f;\n  return old;\n};\n\n/**\n* Runs the SVG Document through the sanitizer and then updates its paths.\n* @function module:svgcanvas.SvgCanvas#prepareSvg\n* @param {XMLDocument} newDoc - The SVG DOM document\n* @returns {undefined}\n*/\nthis.prepareSvg = function (newDoc) {\n  this.sanitizeSvg(newDoc.documentElement);\n\n  // convert paths into absolute commands\n  const paths = [...newDoc.getElementsByTagNameNS(NS.SVG, 'path')];\n  paths.forEach((path) => {\n    path.setAttribute('d', pathActions.convertPath(path));\n    pathActions.fixEnd(path);\n  });\n};\n\n/**\n* Hack for Firefox bugs where text element features aren't updated or get\n* messed up. See issue 136 and issue 137.\n* This function clones the element and re-selects it.\n* @function module:svgcanvas~ffClone\n* @todo Test for this bug on load and add it to \"support\" object instead of\n* browser sniffing\n* @param {Element} elem - The (text) DOM element to clone\n* @returns {Element} Cloned element\n*/\nconst ffClone = function (elem) {\n  if (!isGecko()) { return elem; }\n  const clone = elem.cloneNode(true);\n  elem.before(clone);\n  elem.remove();\n  selectorManager.releaseSelector(elem);\n  selectedElements[0] = clone;\n  selectorManager.requestSelector(clone).showGrips(true);\n  return clone;\n};\n\n// `this.each` is deprecated, if any extension used this it can be recreated by doing this:\n// * @example $(canvas.getRootElem()).children().each(...)\n// * @function module:svgcanvas.SvgCanvas#each\n// this.each = function (cb) {\n//  $(svgroot).children().each(cb);\n// };\n\n/**\n* Removes any old rotations if present, prepends a new rotation at the\n* transformed center.\n* @function module:svgcanvas.SvgCanvas#setRotationAngle\n* @param {string|Float} val - The new rotation angle in degrees\n* @param {boolean} preventUndo - Indicates whether the action should be undoable or not\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRotationAngle = function (val, preventUndo) {\n  // ensure val is the proper type\n  val = parseFloat(val);\n  const elem = selectedElements[0];\n  const oldTransform = elem.getAttribute('transform');\n  const bbox = utilsGetBBox(elem);\n  const cx = bbox.x + bbox.width / 2, cy = bbox.y + bbox.height / 2;\n  const tlist = getTransformList(elem);\n\n  // only remove the real rotational transform if present (i.e. at index=0)\n  if (tlist.numberOfItems > 0) {\n    const xform = tlist.getItem(0);\n    if (xform.type === 4) {\n      tlist.removeItem(0);\n    }\n  }\n  // find Rnc and insert it\n  if (val !== 0) {\n    const center = transformPoint(cx, cy, transformListToTransform(tlist).matrix);\n    const Rnc = svgroot.createSVGTransform();\n    Rnc.setRotate(val, center.x, center.y);\n    if (tlist.numberOfItems) {\n      tlist.insertItemBefore(Rnc, 0);\n    } else {\n      tlist.appendItem(Rnc);\n    }\n  } else if (tlist.numberOfItems === 0) {\n    elem.removeAttribute('transform');\n  }\n\n  if (!preventUndo) {\n    // we need to undo it, then redo it so it can be undo-able! :)\n    // TODO: figure out how to make changes to transform list undo-able cross-browser?\n    const newTransform = elem.getAttribute('transform');\n    elem.setAttribute('transform', oldTransform);\n    changeSelectedAttribute('transform', newTransform, selectedElements);\n    call('changed', selectedElements);\n  }\n  // const pointGripContainer = getElem('pathpointgrip_container');\n  // if (elem.nodeName === 'path' && pointGripContainer) {\n  //   pathActions.setPointContainerTransform(elem.getAttribute('transform'));\n  // }\n  const selector = selectorManager.requestSelector(selectedElements[0]);\n  selector.resize();\n  selector.updateGripCursors(val);\n};\n\n/**\n* Runs `recalculateDimensions` on the selected elements,\n* adding the changes to a single batch command.\n* @function module:svgcanvas.SvgCanvas#recalculateAllSelectedDimensions\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nconst recalculateAllSelectedDimensions = this.recalculateAllSelectedDimensions = function () {\n  const text = (currentResizeMode === 'none' ? 'position' : 'size');\n  const batchCmd = new BatchCommand(text);\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    // if (getRotationAngle(elem) && !hasMatrixTransform(getTransformList(elem))) { continue; }\n    const cmd = recalculateDimensions(elem);\n    if (cmd) {\n      batchCmd.addSubCommand(cmd);\n    }\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n * Debug tool to easily see the current matrix in the browser's console.\n * @function module:svgcanvas~logMatrix\n * @param {SVGMatrix} m The matrix\n * @returns {undefined}\n */\nconst logMatrix = function (m) {\n  console.log([m.a, m.b, m.c, m.d, m.e, m.f]);\n};\n\n// Root Current Transformation Matrix in user units\nlet rootSctm = null;\n\n/**\n* Group: Selection\n*/\n\n// TODO: do we need to worry about selectedBBoxes here?\n\n/**\n* Selects only the given elements, shortcut for `clearSelection(); addToSelection()`.\n* @function module:svgcanvas.SvgCanvas#selectOnly\n* @param {Element[]} elems - an array of DOM elements to be selected\n* @param {boolean} showGrips - Indicates whether the resize grips should be shown\n* @returns {undefined}\n*/\nconst selectOnly = this.selectOnly = function (elems, showGrips) {\n  clearSelection(true);\n  addToSelection(elems, showGrips);\n};\n\n// TODO: could use slice here to make this faster?\n// TODO: should the 'selected' handler\n\n/**\n* Removes elements from the selection.\n* @function module:svgcanvas.SvgCanvas#removeFromSelection\n* @param {Element[]} elemsToRemove - An array of elements to remove from selection\n* @returns {undefined}\n*/\n/* const removeFromSelection = */ this.removeFromSelection = function (elemsToRemove) {\n  if (selectedElements[0] == null) { return; }\n  if (!elemsToRemove.length) { return; }\n\n  // find every element and remove it from our array copy\n  const newSelectedItems = [],\n    len = selectedElements.length;\n  for (let i = 0; i < len; ++i) {\n    const elem = selectedElements[i];\n    if (elem) {\n      // keep the item\n      if (!elemsToRemove.includes(elem)) {\n        newSelectedItems.push(elem);\n      } else { // remove the item and its selector\n        selectorManager.releaseSelector(elem);\n      }\n    }\n  }\n  // the copy becomes the master now\n  selectedElements = newSelectedItems;\n};\n\n/**\n* Clears the selection, then adds all elements in the current layer to the selection.\n* @function module:svgcanvas.SvgCanvas#selectAllInCurrentLayer\n* @returns {undefined}\n*/\nthis.selectAllInCurrentLayer = function () {\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (currentLayer) {\n    currentMode = 'select';\n    selectOnly($(currentGroup || currentLayer).children());\n  }\n};\n\nlet drawnPath = null;\n\n// Mouse events\n(function () {\nconst freehand = {\n  minx: null,\n  miny: null,\n  maxx: null,\n  maxy: null\n};\nconst THRESHOLD_DIST = 0.8,\n  STEP_COUNT = 10;\nlet dAttr = null,\n  startX = null,\n  startY = null,\n  rStartX = null,\n  rStartY = null,\n  initBbox = {},\n  sumDistance = 0,\n  controllPoint2 = {x: 0, y: 0},\n  controllPoint1 = {x: 0, y: 0},\n  start = {x: 0, y: 0},\n  end = {x: 0, y: 0},\n  bSpline = {x: 0, y: 0},\n  nextPos = {x: 0, y: 0},\n  parameter,\n  nextParameter;\n\nconst getBsplinePoint = function (t) {\n  const spline = {x: 0, y: 0},\n    p0 = controllPoint2,\n    p1 = controllPoint1,\n    p2 = start,\n    p3 = end,\n    S = 1.0 / 6.0,\n    t2 = t * t,\n    t3 = t2 * t;\n\n  const m = [\n    [-1, 3, -3, 1],\n    [3, -6, 3, 0],\n    [-3, 0, 3, 0],\n    [1, 4, 1, 0]\n  ];\n\n  spline.x = S * (\n    (p0.x * m[0][0] + p1.x * m[0][1] + p2.x * m[0][2] + p3.x * m[0][3]) * t3 +\n      (p0.x * m[1][0] + p1.x * m[1][1] + p2.x * m[1][2] + p3.x * m[1][3]) * t2 +\n      (p0.x * m[2][0] + p1.x * m[2][1] + p2.x * m[2][2] + p3.x * m[2][3]) * t +\n      (p0.x * m[3][0] + p1.x * m[3][1] + p2.x * m[3][2] + p3.x * m[3][3])\n  );\n  spline.y = S * (\n    (p0.y * m[0][0] + p1.y * m[0][1] + p2.y * m[0][2] + p3.y * m[0][3]) * t3 +\n      (p0.y * m[1][0] + p1.y * m[1][1] + p2.y * m[1][2] + p3.y * m[1][3]) * t2 +\n      (p0.y * m[2][0] + p1.y * m[2][1] + p2.y * m[2][2] + p3.y * m[2][3]) * t +\n      (p0.y * m[3][0] + p1.y * m[3][1] + p2.y * m[3][2] + p3.y * m[3][3])\n  );\n\n  return {\n    x: spline.x,\n    y: spline.y\n  };\n};\n/**\n * Follows these conditions:\n * - When we are in a create mode, the element is added to the canvas but the\n *   action is not recorded until mousing up.\n * - When we are in select mode, select the element, remember the position\n *   and do nothing else.\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseDown\n * @returns {undefined}\n */\nconst mouseDown = function (evt) {\n  if (canvas.spaceKey || evt.button === 1) { return; }\n\n  const rightClick = evt.button === 2;\n\n  if (evt.altKey) { // duplicate when dragging\n    canvas.cloneSelectedElements(0, 0);\n  }\n\n  rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom;\n\n  evt.preventDefault();\n\n  if (rightClick) {\n    currentMode = 'select';\n    lastClickPoint = pt;\n  }\n\n  // This would seem to be unnecessary...\n  // if (!['select', 'resize'].includes(currentMode)) {\n  //   setGradient();\n  // }\n\n  let x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n  let mouseTarget = getMouseTarget(evt);\n\n  if (mouseTarget.tagName === 'a' && mouseTarget.childNodes.length === 1) {\n    mouseTarget = mouseTarget.firstChild;\n  }\n\n  // realX/y ignores grid-snap value\n  const realX = x;\n  rStartX = startX = x;\n  const realY = y;\n  rStartY = startY = y;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n    startX = snapToGrid(startX);\n    startY = snapToGrid(startY);\n  }\n\n  // if it is a selector grip, then it must be a single element selected,\n  // set the mouseTarget to that and update the mode to rotate/resize\n\n  if (mouseTarget === selectorManager.selectorParentGroup && selectedElements[0] != null) {\n    const grip = evt.target;\n    const griptype = elData(grip, 'type');\n    // rotating\n    if (griptype === 'rotate') {\n      currentMode = 'rotate';\n    // resizing\n    } else if (griptype === 'resize') {\n      currentMode = 'resize';\n      currentResizeMode = elData(grip, 'dir');\n    }\n    mouseTarget = selectedElements[0];\n  }\n\n  startTransform = mouseTarget.getAttribute('transform');\n  let i, strokeW;\n  const tlist = getTransformList(mouseTarget);\n  switch (currentMode) {\n  case 'select':\n    started = true;\n    currentResizeMode = 'none';\n    if (rightClick) { started = false; }\n\n    if (mouseTarget !== svgroot) {\n      // if this element is not yet selected, clear selection and select it\n      if (!selectedElements.includes(mouseTarget)) {\n        // only clear selection if shift is not pressed (otherwise, add\n        // element to selection)\n        if (!evt.shiftKey) {\n          // No need to do the call here as it will be done on addToSelection\n          clearSelection(true);\n        }\n        addToSelection([mouseTarget]);\n        justSelected = mouseTarget;\n        pathActions.clear();\n      }\n      // else if it's a path, go into pathedit mode in mouseup\n\n      if (!rightClick) {\n        // insert a dummy transform so if the element(s) are moved it will have\n        // a transform to use for its translate\n        for (i = 0; i < selectedElements.length; ++i) {\n          if (selectedElements[i] == null) { continue; }\n          const slist = getTransformList(selectedElements[i]);\n          if (slist.numberOfItems) {\n            slist.insertItemBefore(svgroot.createSVGTransform(), 0);\n          } else {\n            slist.appendItem(svgroot.createSVGTransform());\n          }\n        }\n      }\n    } else if (!rightClick) {\n      clearSelection();\n      currentMode = 'multiselect';\n      if (rubberBox == null) {\n        rubberBox = selectorManager.getRubberBandBox();\n      }\n      rStartX *= currentZoom;\n      rStartY *= currentZoom;\n      // console.log('p',[evt.pageX, evt.pageY]);\n      // console.log('c',[evt.clientX, evt.clientY]);\n      // console.log('o',[evt.offsetX, evt.offsetY]);\n      // console.log('s',[startX, startY]);\n\n      assignAttributes(rubberBox, {\n        x: rStartX,\n        y: rStartY,\n        width: 0,\n        height: 0,\n        display: 'inline'\n      }, 100);\n    }\n    break;\n  case 'zoom':\n    started = true;\n    if (rubberBox == null) {\n      rubberBox = selectorManager.getRubberBandBox();\n    }\n    assignAttributes(rubberBox, {\n      x: realX * currentZoom,\n      y: realX * currentZoom,\n      width: 0,\n      height: 0,\n      display: 'inline'\n    }, 100);\n    break;\n  case 'resize':\n    started = true;\n    startX = x;\n    startY = y;\n\n    // Getting the BBox from the selection box, since we know we\n    // want to orient around it\n    initBbox = utilsGetBBox($('#selectedBox0')[0]);\n    const bb = {};\n    $.each(initBbox, function (key, val) {\n      bb[key] = val / currentZoom;\n    });\n    initBbox = bb;\n\n    // append three dummy transforms to the tlist so that\n    // we can translate,scale,translate in mousemove\n    const pos = getRotationAngle(mouseTarget) ? 1 : 0;\n\n    if (hasMatrixTransform(tlist)) {\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n    } else {\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n\n      if (supportsNonScalingStroke()) {\n        // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):\n        // https://code.google.com/p/svg-edit/issues/detail?id=904\n        // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625\n        // TODO: Remove this workaround once vendor fixes the issue\n        const iswebkit = isWebkit();\n\n        let delayedStroke;\n        if (iswebkit) {\n          delayedStroke = function (ele) {\n            const _stroke = ele.getAttribute('stroke');\n            ele.removeAttribute('stroke');\n            // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker\n            if (_stroke !== null) setTimeout(function () { ele.setAttribute('stroke', _stroke); }, 0);\n          };\n        }\n        mouseTarget.style.vectorEffect = 'non-scaling-stroke';\n        if (iswebkit) { delayedStroke(mouseTarget); }\n\n        const all = mouseTarget.getElementsByTagName('*'),\n          len = all.length;\n        for (i = 0; i < len; i++) {\n          if (!all[i].style) { // mathML\n            continue;\n          }\n          all[i].style.vectorEffect = 'non-scaling-stroke';\n          if (iswebkit) { delayedStroke(all[i]); }\n        }\n      }\n    }\n    break;\n  case 'fhellipse':\n  case 'fhrect':\n  case 'fhpath':\n    start.x = realX;\n    start.y = realY;\n    started = true;\n    dAttr = realX + ',' + realY + ' ';\n    // Commented out as doing nothing now:\n    // strokeW = parseFloat(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'polyline',\n      curStyles: true,\n      attr: {\n        points: dAttr,\n        id: getNextId(),\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        'stroke-linecap': 'round',\n        style: 'pointer-events:none'\n      }\n    });\n    freehand.minx = realX;\n    freehand.maxx = realX;\n    freehand.miny = realY;\n    freehand.maxy = realY;\n    break;\n  case 'image':\n    started = true;\n    const newImage = addSVGElementFromJson({\n      element: 'image',\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:inherit'\n      }\n    });\n    setHref(newImage, lastGoodImgUrl);\n    preventClickDefault(newImage);\n    break;\n  case 'square':\n    // FIXME: once we create the rect, we lose information that this was a square\n    // (for resizing purposes this could be important)\n    // Fallthrough\n  case 'rect':\n    started = true;\n    startX = x;\n    startY = y;\n    addSVGElementFromJson({\n      element: 'rect',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'line':\n    started = true;\n    strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'line',\n      curStyles: true,\n      attr: {\n        x1: x,\n        y1: y,\n        x2: x,\n        y2: y,\n        id: getNextId(),\n        stroke: curShape.stroke,\n        'stroke-width': strokeW,\n        'stroke-dasharray': curShape.stroke_dasharray,\n        'stroke-linejoin': curShape.stroke_linejoin,\n        'stroke-linecap': curShape.stroke_linecap,\n        'stroke-opacity': curShape.stroke_opacity,\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:none'\n      }\n    });\n    break;\n  case 'circle':\n    started = true;\n    addSVGElementFromJson({\n      element: 'circle',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        r: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'ellipse':\n    started = true;\n    addSVGElementFromJson({\n      element: 'ellipse',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        rx: 0,\n        ry: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'text':\n    started = true;\n    /* const newText = */ addSVGElementFromJson({\n      element: 'text',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        id: getNextId(),\n        fill: curText.fill,\n        'stroke-width': curText.stroke_width,\n        'font-size': curText.font_size,\n        'font-family': curText.font_family,\n        'text-anchor': 'middle',\n        'xml:space': 'preserve',\n        opacity: curShape.opacity\n      }\n    });\n    // newText.textContent = 'text';\n    break;\n  case 'path':\n    // Fall through\n  case 'pathedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    pathActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'textedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    textActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'rotate':\n    started = true;\n    // we are starting an undoable change (a drag-rotation)\n    canvas.undoMgr.beginUndoableChange('transform', selectedElements);\n    break;\n  default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n   * The main (left) mouse button is held down on the canvas area\n   * @event module:svgcanvas.SvgCanvas#event:ext-mouseDown\n   * @type {PlainObject}\n   * @property {MouseEvent} event The event object\n   * @property {Float} start_x x coordinate on canvas\n   * @property {Float} start_y y coordinate on canvas\n   * @property {Element[]} selectedElements An array of the selected Elements\n  */\n  const extResult = runExtensions('mouseDown', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseDown} */ {\n    event: evt,\n    start_x: startX,\n    start_y: startY,\n    selectedElements\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r && r.started) {\n      started = true;\n    }\n  });\n};\n\n// in this function we do not record any state changes yet (but we do update\n// any elements that are still being created, moved or resized on the canvas)\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:transition\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseMove\n * @returns {undefined}\n */\nconst mouseMove = function (evt) {\n  if (!started) { return; }\n  if (evt.button === 1 || canvas.spaceKey) { return; }\n\n  let i, xya, c, cx, cy, dx, dy, len, angle, box,\n    selected = selectedElements[0];\n  const\n    pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    shape = getElem(getId());\n\n  let realX = mouseX / currentZoom;\n  let x = realX;\n  let realY = mouseY / currentZoom;\n  let y = realY;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n  }\n\n  evt.preventDefault();\n  let tlist;\n  switch (currentMode) {\n  case 'select': {\n    // we temporarily use a translate on the element(s) being dragged\n    // this transform is removed upon mousing up and the element is\n    // relocated to the new location\n    if (selectedElements[0] !== null) {\n      dx = x - startX;\n      dy = y - startY;\n\n      if (curConfig.gridSnapping) {\n        dx = snapToGrid(dx);\n        dy = snapToGrid(dy);\n      }\n\n      /*\n      // Commenting out as currently has no effect\n      if (evt.shiftKey) {\n        xya = snapToAngle(startX, startY, x, y);\n        ({x, y} = xya);\n      }\n      */\n\n      if (dx !== 0 || dy !== 0) {\n        len = selectedElements.length;\n        for (i = 0; i < len; ++i) {\n          selected = selectedElements[i];\n          if (selected == null) { break; }\n          // if (i === 0) {\n          //   const box = utilsGetBBox(selected);\n          //     selectedBBoxes[i].x = box.x + dx;\n          //     selectedBBoxes[i].y = box.y + dy;\n          // }\n\n          // update the dummy transform in our transform list\n          // to be a translate\n          const xform = svgroot.createSVGTransform();\n          tlist = getTransformList(selected);\n          // Note that if Webkit and there's no ID for this\n          // element, the dummy transform may have gotten lost.\n          // This results in unexpected behaviour\n\n          xform.setTranslate(dx, dy);\n          if (tlist.numberOfItems) {\n            tlist.replaceItem(xform, 0);\n          } else {\n            tlist.appendItem(xform);\n          }\n\n          // update our internal bbox that we're tracking while dragging\n          selectorManager.requestSelector(selected).resize();\n        }\n\n        call('transition', selectedElements);\n      }\n    }\n    break;\n  } case 'multiselect': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY)\n    }, 100);\n\n    // for each selected:\n    // - if newList contains selected, do nothing\n    // - if newList doesn't contain selected, remove it from selected\n    // - for any newList that was not in selectedElements, add it to selected\n    const elemsToRemove = selectedElements.slice(), elemsToAdd = [],\n      newList = getIntersectionList();\n\n    // For every element in the intersection, add if not present in selectedElements.\n    len = newList.length;\n    for (i = 0; i < len; ++i) {\n      const intElem = newList[i];\n      // Found an element that was not selected before, so we should add it.\n      if (!selectedElements.includes(intElem)) {\n        elemsToAdd.push(intElem);\n      }\n      // Found an element that was already selected, so we shouldn't remove it.\n      const foundInd = elemsToRemove.indexOf(intElem);\n      if (foundInd !== -1) {\n        elemsToRemove.splice(foundInd, 1);\n      }\n    }\n\n    if (elemsToRemove.length > 0) {\n      canvas.removeFromSelection(elemsToRemove);\n    }\n\n    if (elemsToAdd.length > 0) {\n      canvas.addToSelection(elemsToAdd);\n    }\n\n    break;\n  } case 'resize': {\n    // we track the resize bounding box and translate/scale the selected element\n    // while the mouse is down, when mouse goes up, we use this to recalculate\n    // the shape's coordinates\n    tlist = getTransformList(selected);\n    const hasMatrix = hasMatrixTransform(tlist);\n    box = hasMatrix ? initBbox : utilsGetBBox(selected);\n    let left = box.x,\n      top = box.y,\n      {width, height} = box;\n    dx = (x - startX);\n    dy = (y - startY);\n\n    if (curConfig.gridSnapping) {\n      dx = snapToGrid(dx);\n      dy = snapToGrid(dy);\n      height = snapToGrid(height);\n      width = snapToGrid(width);\n    }\n\n    // if rotated, adjust the dx,dy values\n    angle = getRotationAngle(selected);\n    if (angle) {\n      const r = Math.sqrt(dx * dx + dy * dy),\n        theta = Math.atan2(dy, dx) - angle * Math.PI / 180.0;\n      dx = r * Math.cos(theta);\n      dy = r * Math.sin(theta);\n    }\n\n    // if not stretching in y direction, set dy to 0\n    // if not stretching in x direction, set dx to 0\n    if (!currentResizeMode.includes('n') && !currentResizeMode.includes('s')) {\n      dy = 0;\n    }\n    if (!currentResizeMode.includes('e') && !currentResizeMode.includes('w')) {\n      dx = 0;\n    }\n\n    let // ts = null,\n      tx = 0, ty = 0,\n      sy = height ? (height + dy) / height : 1,\n      sx = width ? (width + dx) / width : 1;\n    // if we are dragging on the north side, then adjust the scale factor and ty\n    if (currentResizeMode.includes('n')) {\n      sy = height ? (height - dy) / height : 1;\n      ty = height;\n    }\n\n    // if we dragging on the east side, then adjust the scale factor and tx\n    if (currentResizeMode.includes('w')) {\n      sx = width ? (width - dx) / width : 1;\n      tx = width;\n    }\n\n    // update the transform list with translate,scale,translate\n    const translateOrigin = svgroot.createSVGTransform(),\n      scale = svgroot.createSVGTransform(),\n      translateBack = svgroot.createSVGTransform();\n\n    if (curConfig.gridSnapping) {\n      left = snapToGrid(left);\n      tx = snapToGrid(tx);\n      top = snapToGrid(top);\n      ty = snapToGrid(ty);\n    }\n\n    translateOrigin.setTranslate(-(left + tx), -(top + ty));\n    if (evt.shiftKey) {\n      if (sx === 1) {\n        sx = sy;\n      } else { sy = sx; }\n    }\n    scale.setScale(sx, sy);\n\n    translateBack.setTranslate(left + tx, top + ty);\n    if (hasMatrix) {\n      const diff = angle ? 1 : 0;\n      tlist.replaceItem(translateOrigin, 2 + diff);\n      tlist.replaceItem(scale, 1 + diff);\n      tlist.replaceItem(translateBack, Number(diff));\n    } else {\n      const N = tlist.numberOfItems;\n      tlist.replaceItem(translateBack, N - 3);\n      tlist.replaceItem(scale, N - 2);\n      tlist.replaceItem(translateOrigin, N - 1);\n    }\n\n    selectorManager.requestSelector(selected).resize();\n\n    call('transition', selectedElements);\n\n    break;\n  } case 'zoom': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX * currentZoom, realX),\n      y: Math.min(rStartY * currentZoom, realY),\n      width: Math.abs(realX - rStartX * currentZoom),\n      height: Math.abs(realY - rStartY * currentZoom)\n    }, 100);\n    break;\n  } case 'text': {\n    assignAttributes(shape, {\n      x,\n      y\n    }, 1000);\n    break;\n  } case 'line': {\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n    }\n\n    let x2 = x;\n    let y2 = y;\n\n    if (evt.shiftKey) {\n      xya = snapToAngle(startX, startY, x2, y2);\n      x2 = xya.x;\n      y2 = xya.y;\n    }\n\n    shape.setAttribute('x2', x2);\n    shape.setAttribute('y2', y2);\n    break;\n  } case 'foreignObject':\n    // fall through\n  case 'square':\n    // fall through\n  case 'rect':\n    // fall through\n  case 'image': {\n    const square = (currentMode === 'square') || evt.shiftKey;\n    let\n      w = Math.abs(x - startX),\n      h = Math.abs(y - startY);\n    let newX, newY;\n    if (square) {\n      w = h = Math.max(w, h);\n      newX = startX < x ? startX : startX - w;\n      newY = startY < y ? startY : startY - h;\n    } else {\n      newX = Math.min(startX, x);\n      newY = Math.min(startY, y);\n    }\n\n    if (curConfig.gridSnapping) {\n      w = snapToGrid(w);\n      h = snapToGrid(h);\n      newX = snapToGrid(newX);\n      newY = snapToGrid(newY);\n    }\n\n    assignAttributes(shape, {\n      width: w,\n      height: h,\n      x: newX,\n      y: newY\n    }, 1000);\n\n    break;\n  } case 'circle': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    let rad = Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy));\n    if (curConfig.gridSnapping) {\n      rad = snapToGrid(rad);\n    }\n    shape.setAttribute('r', rad);\n    break;\n  } case 'ellipse': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      cx = snapToGrid(cx);\n      y = snapToGrid(y);\n      cy = snapToGrid(cy);\n    }\n    shape.setAttribute('rx', Math.abs(x - cx));\n    const ry = Math.abs(evt.shiftKey ? (x - cx) : (y - cy));\n    shape.setAttribute('ry', ry);\n    break;\n  }\n  case 'fhellipse':\n  case 'fhrect': {\n    freehand.minx = Math.min(realX, freehand.minx);\n    freehand.maxx = Math.max(realX, freehand.maxx);\n    freehand.miny = Math.min(realY, freehand.miny);\n    freehand.maxy = Math.max(realY, freehand.maxy);\n  }\n  // Fallthrough\n  case 'fhpath': {\n    // dAttr += + realX + ',' + realY + ' ';\n    // shape.setAttribute('points', dAttr);\n    end.x = realX; end.y = realY;\n    if (controllPoint2.x && controllPoint2.y) {\n      for (i = 0; i < STEP_COUNT - 1; i++) {\n        parameter = i / STEP_COUNT;\n        nextParameter = (i + 1) / STEP_COUNT;\n        bSpline = getBsplinePoint(nextParameter);\n        nextPos = bSpline;\n        bSpline = getBsplinePoint(parameter);\n        sumDistance += Math.sqrt((nextPos.x - bSpline.x) * (nextPos.x - bSpline.x) + (nextPos.y - bSpline.y) * (nextPos.y - bSpline.y));\n        if (sumDistance > THRESHOLD_DIST) {\n          sumDistance -= THRESHOLD_DIST;\n\n          // Faster than completely re-writing the points attribute.\n          const point = svgcontent.createSVGPoint();\n          point.x = bSpline.x;\n          point.y = bSpline.y;\n          shape.points.appendItem(point);\n        }\n      }\n    }\n    controllPoint2 = {x: controllPoint1.x, y: controllPoint1.y};\n    controllPoint1 = {x: start.x, y: start.y};\n    start = {x: end.x, y: end.y};\n    break;\n  // update path stretch line coordinates\n  } case 'path': {\n  }\n  // fall through\n  case 'pathedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n      startX = snapToGrid(startX);\n      startY = snapToGrid(startY);\n    }\n    if (evt.shiftKey) {\n      const {path} = pathModule;\n      let x1, y1;\n      if (path) {\n        x1 = path.dragging ? path.dragging[0] : startX;\n        y1 = path.dragging ? path.dragging[1] : startY;\n      } else {\n        x1 = startX;\n        y1 = startY;\n      }\n      xya = snapToAngle(x1, y1, x, y);\n      ({x, y} = xya);\n    }\n\n    if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n      realX *= currentZoom;\n      realY *= currentZoom;\n      assignAttributes(rubberBox, {\n        x: Math.min(rStartX * currentZoom, realX),\n        y: Math.min(rStartY * currentZoom, realY),\n        width: Math.abs(realX - rStartX * currentZoom),\n        height: Math.abs(realY - rStartY * currentZoom)\n      }, 100);\n    }\n    pathActions.mouseMove(x, y);\n\n    break;\n  } case 'textedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n    // if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n    //   assignAttributes(rubberBox, {\n    //     x: Math.min(startX, x),\n    //     y: Math.min(startY, y),\n    //     width: Math.abs(x - startX),\n    //     height: Math.abs(y - startY)\n    //   }, 100);\n    // }\n\n    textActions.mouseMove(mouseX, mouseY);\n\n    break;\n  } case 'rotate': {\n    box = utilsGetBBox(selected);\n    cx = box.x + box.width / 2;\n    cy = box.y + box.height / 2;\n    const m = getMatrix(selected),\n      center = transformPoint(cx, cy, m);\n    cx = center.x;\n    cy = center.y;\n    angle = ((Math.atan2(cy - y, cx - x) * (180 / Math.PI)) - 90) % 360;\n    if (curConfig.gridSnapping) {\n      angle = snapToGrid(angle);\n    }\n    if (evt.shiftKey) { // restrict rotations to nice angles (WRS)\n      const snap = 45;\n      angle = Math.round(angle / snap) * snap;\n    }\n\n    canvas.setRotationAngle(angle < -180 ? (360 + angle) : angle, true);\n    call('transition', selectedElements);\n    break;\n  } default:\n    break;\n  }\n\n  /**\n  * The mouse has moved on the canvas area\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseMove\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  * @property {Element} selected Refers to the first selected element\n  */\n  runExtensions('mouseMove', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseMove} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY,\n    selected\n  });\n}; // mouseMove()\n\n// - in create mode, the element's opacity is set properly, we create an InsertElementCommand\n// and store it on the Undo stack\n// - in move/resize mode, the element's attributes which were affected by the move/resize are\n// identified, a ChangeElementCommand is created and stored on the stack for those attrs\n// this is done in when we recalculate the selected dimensions()\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:zoomed\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseUp\n * @returns {undefined}\n */\nconst mouseUp = function (evt) {\n  if (evt.button === 2) { return; }\n  const tempJustSelected = justSelected;\n  justSelected = null;\n  if (!started) { return; }\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n\n  let element = getElem(getId());\n  let keep = false;\n\n  const realX = x;\n  const realY = y;\n\n  // TODO: Make true when in multi-unit mode\n  const useUnit = false; // (curConfig.baseUnit !== 'px');\n  started = false;\n  let attrs, t;\n  switch (currentMode) {\n  // intentionally fall-through to select here\n  case 'resize':\n  case 'multiselect':\n    if (rubberBox != null) {\n      rubberBox.setAttribute('display', 'none');\n      curBBoxes = [];\n    }\n    currentMode = 'select';\n    // Fallthrough\n  case 'select':\n    if (selectedElements[0] != null) {\n      // if we only have one selected element\n      if (selectedElements[1] == null) {\n        // set our current stroke/fill properties to the element's\n        const selected = selectedElements[0];\n        switch (selected.tagName) {\n        case 'g':\n        case 'use':\n        case 'image':\n        case 'foreignObject':\n          break;\n        default:\n          curProperties.fill = selected.getAttribute('fill');\n          curProperties.fill_opacity = selected.getAttribute('fill-opacity');\n          curProperties.stroke = selected.getAttribute('stroke');\n          curProperties.stroke_opacity = selected.getAttribute('stroke-opacity');\n          curProperties.stroke_width = selected.getAttribute('stroke-width');\n          curProperties.stroke_dasharray = selected.getAttribute('stroke-dasharray');\n          curProperties.stroke_linejoin = selected.getAttribute('stroke-linejoin');\n          curProperties.stroke_linecap = selected.getAttribute('stroke-linecap');\n        }\n\n        if (selected.tagName === 'text') {\n          curText.font_size = selected.getAttribute('font-size');\n          curText.font_family = selected.getAttribute('font-family');\n        }\n        selectorManager.requestSelector(selected).showGrips(true);\n\n        // This shouldn't be necessary as it was done on mouseDown...\n        // call('selected', [selected]);\n      }\n      // always recalculate dimensions to strip off stray identity transforms\n      recalculateAllSelectedDimensions();\n      // if it was being dragged/resized\n      if (realX !== rStartX || realY !== rStartY) {\n        const len = selectedElements.length;\n        for (let i = 0; i < len; ++i) {\n          if (selectedElements[i] == null) { break; }\n          if (!selectedElements[i].firstChild) {\n            // Not needed for groups (incorrectly resizes elems), possibly not needed at all?\n            selectorManager.requestSelector(selectedElements[i]).resize();\n          }\n        }\n      // no change in position/size, so maybe we should move to pathedit\n      } else {\n        t = evt.target;\n        if (selectedElements[0].nodeName === 'path' && selectedElements[1] == null) {\n          pathActions.select(selectedElements[0]);\n        // if it was a path\n        // else, if it was selected and this is a shift-click, remove it from selection\n        } else if (evt.shiftKey) {\n          if (tempJustSelected !== t) {\n            canvas.removeFromSelection([t]);\n          }\n        }\n      } // no change in mouse position\n\n      // Remove non-scaling stroke\n      if (supportsNonScalingStroke()) {\n        const elem = selectedElements[0];\n        if (elem) {\n          elem.removeAttribute('style');\n          walkTree(elem, function (elem) {\n            elem.removeAttribute('style');\n          });\n        }\n      }\n    }\n    return;\n  case 'zoom':\n    if (rubberBox != null) {\n      rubberBox.setAttribute('display', 'none');\n    }\n    const factor = evt.shiftKey ? 0.5 : 2;\n    call('zoomed', {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY),\n      factor\n    });\n    return;\n  case 'fhpath':\n    // Check that the path contains at least 2 points; a degenerate one-point path\n    // causes problems.\n    // Webkit ignores how we set the points attribute with commas and uses space\n    // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870\n    sumDistance = 0;\n    controllPoint2 = {x: 0, y: 0};\n    controllPoint1 = {x: 0, y: 0};\n    start = {x: 0, y: 0};\n    end = {x: 0, y: 0};\n    const coords = element.getAttribute('points');\n    const commaIndex = coords.indexOf(',');\n    if (commaIndex >= 0) {\n      keep = coords.indexOf(',', commaIndex + 1) >= 0;\n    } else {\n      keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;\n    }\n    if (keep) {\n      element = pathActions.smoothPolylineIntoPath(element);\n    }\n    break;\n  case 'line':\n    attrs = $(element).attr(['x1', 'x2', 'y1', 'y2']);\n    keep = (attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2);\n    break;\n  case 'foreignObject':\n  case 'square':\n  case 'rect':\n  case 'image':\n    attrs = $(element).attr(['width', 'height']);\n    // Image should be kept regardless of size (use inherit dimensions later)\n    keep = (attrs.width || attrs.height) || currentMode === 'image';\n    break;\n  case 'circle':\n    keep = (element.getAttribute('r') !== '0');\n    break;\n  case 'ellipse':\n    attrs = $(element).attr(['rx', 'ry']);\n    keep = (attrs.rx || attrs.ry);\n    break;\n  case 'fhellipse':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'ellipse',\n        curStyles: true,\n        attr: {\n          cx: (freehand.minx + freehand.maxx) / 2,\n          cy: (freehand.miny + freehand.maxy) / 2,\n          rx: (freehand.maxx - freehand.minx) / 2,\n          ry: (freehand.maxy - freehand.miny) / 2,\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'fhrect':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'rect',\n        curStyles: true,\n        attr: {\n          x: freehand.minx,\n          y: freehand.miny,\n          width: (freehand.maxx - freehand.minx),\n          height: (freehand.maxy - freehand.miny),\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'text':\n    keep = true;\n    selectOnly([element]);\n    textActions.start(element);\n    break;\n  case 'path':\n    // set element to null here so that it is not removed nor finalized\n    element = null;\n    // continue to be set to true so that mouseMove happens\n    started = true;\n\n    const res = pathActions.mouseUp(evt, element, mouseX, mouseY);\n    ({element} = res);\n    ({keep} = res);\n    break;\n  case 'pathedit':\n    keep = true;\n    element = null;\n    pathActions.mouseUp(evt);\n    break;\n  case 'textedit':\n    keep = false;\n    element = null;\n    textActions.mouseUp(evt, mouseX, mouseY);\n    break;\n  case 'rotate':\n    keep = true;\n    element = null;\n    currentMode = 'select';\n    const batchCmd = canvas.undoMgr.finishUndoableChange();\n    if (!batchCmd.isEmpty()) {\n      addCommandToHistory(batchCmd);\n    }\n    // perform recalculation to weed out any stray identity transforms that might get stuck\n    recalculateAllSelectedDimensions();\n    call('changed', selectedElements);\n    break;\n  default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n  * The main (left) mouse button is released (anywhere)\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseUp\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  */\n  const extResult = runExtensions('mouseUp', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseUp} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r) {\n      keep = r.keep || keep;\n      ({element} = r);\n      started = r.started || started;\n    }\n  });\n\n  if (!keep && element != null) {\n    getCurrentDrawing().releaseId(getId());\n    element.remove();\n    element = null;\n\n    t = evt.target;\n\n    // if this element is in a group, go up until we reach the top-level group\n    // just below the layer groups\n    // TODO: once we implement links, we also would have to check for <a> elements\n    while (t && t.parentNode && t.parentNode.parentNode && t.parentNode.parentNode.tagName === 'g') {\n      t = t.parentNode;\n    }\n    // if we are not in the middle of creating a path, and we've clicked on some shape,\n    // then go to Select mode.\n    // WebKit returns <div> when the canvas is clicked, Firefox/Opera return <svg>\n    if ((currentMode !== 'path' || !drawnPath) &&\n      t && t.parentNode &&\n      t.parentNode.id !== 'selectorParentGroup' &&\n      t.id !== 'svgcanvas' && t.id !== 'svgroot'\n    ) {\n      // switch into \"select\" mode if we've clicked on an element\n      canvas.setMode('select');\n      selectOnly([t], true);\n    }\n  } else if (element != null) {\n    /**\n    * @name module:svgcanvas.SvgCanvas#addedNew\n    * @type {boolean}\n    */\n    canvas.addedNew = true;\n\n    if (useUnit) { convertAttrs(element); }\n\n    let aniDur = 0.2;\n    let cAni;\n    if (opacAni.beginElement && parseFloat(element.getAttribute('opacity')) !== curShape.opacity) {\n      cAni = $(opacAni).clone().attr({\n        to: curShape.opacity,\n        dur: aniDur\n      }).appendTo(element);\n      try {\n        // Fails in FF4 on foreignObject\n        cAni[0].beginElement();\n      } catch (e) {}\n    } else {\n      aniDur = 0;\n    }\n\n    // Ideally this would be done on the endEvent of the animation,\n    // but that doesn't seem to be supported in Webkit\n    setTimeout(function () {\n      if (cAni) { cAni.remove(); }\n      element.setAttribute('opacity', curShape.opacity);\n      element.setAttribute('style', 'pointer-events:inherit');\n      cleanupElement(element);\n      if (currentMode === 'path') {\n        pathActions.toEditMode(element);\n      } else if (curConfig.selectNew) {\n        selectOnly([element], true);\n      }\n      // we create the insert command that is stored on the stack\n      // undo means to call cmd.unapply(), redo means to call cmd.apply()\n      addCommandToHistory(new InsertElementCommand(element));\n\n      call('changed', [element]);\n    }, aniDur * 1000);\n  }\n\n  startTransform = null;\n};\n\nconst dblClick = function (evt) {\n  const evtTarget = evt.target;\n  const parent = evtTarget.parentNode;\n\n  // Do nothing if already in current group\n  if (parent === currentGroup) { return; }\n\n  let mouseTarget = getMouseTarget(evt);\n  const {tagName} = mouseTarget;\n\n  if (tagName === 'text' && currentMode !== 'textedit') {\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n    textActions.select(mouseTarget, pt.x, pt.y);\n  }\n\n  if ((tagName === 'g' || tagName === 'a') &&\n    getRotationAngle(mouseTarget)\n  ) {\n    // TODO: Allow method of in-group editing without having to do\n    // this (similar to editing rotated paths)\n\n    // Ungroup and regroup\n    pushGroupProperties(mouseTarget);\n    mouseTarget = selectedElements[0];\n    clearSelection(true);\n  }\n  // Reset context\n  if (currentGroup) {\n    draw.leaveContext();\n  }\n\n  if ((parent.tagName !== 'g' && parent.tagName !== 'a') ||\n    parent === getCurrentDrawing().getCurrentLayer() ||\n    mouseTarget === selectorManager.selectorParentGroup\n  ) {\n    // Escape from in-group edit\n    return;\n  }\n  draw.setContext(mouseTarget);\n};\n\n// prevent links from being followed in the canvas\nconst handleLinkInCanvas = function (e) {\n  e.preventDefault();\n  return false;\n};\n\n// Added mouseup to the container here.\n// TODO(codedread): Figure out why after the Closure compiler, the window mouseup is ignored.\n$(container).mousedown(mouseDown).mousemove(mouseMove).click(handleLinkInCanvas).dblclick(dblClick).mouseup(mouseUp);\n// $(window).mouseup(mouseUp);\n\n// TODO(rafaelcastrocouto): User preference for shift key and zoom factor\n$(container).bind(\n  'mousewheel DOMMouseScroll',\n  /**\n   * @param {Event} e\n   * @fires module:svgcanvas.SvgCanvas#event:updateCanvas\n   * @fires module:svgcanvas.SvgCanvas#event:zoomDone\n   * @returns {undefined}\n   */\n  function (e) {\n    if (!e.shiftKey) { return; }\n\n    e.preventDefault();\n    const evt = e.originalEvent;\n\n    rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n    const workarea = $('#workarea');\n    const scrbar = 15;\n    const rulerwidth = curConfig.showRulers ? 16 : 0;\n\n    // mouse relative to content area in content pixels\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n\n    // full work area width in screen pixels\n    const editorFullW = workarea.width();\n    const editorFullH = workarea.height();\n\n    // work area width minus scroll and ruler in screen pixels\n    const editorW = editorFullW - scrbar - rulerwidth;\n    const editorH = editorFullH - scrbar - rulerwidth;\n\n    // work area width in content pixels\n    const workareaViewW = editorW * rootSctm.a;\n    const workareaViewH = editorH * rootSctm.d;\n\n    // content offset from canvas in screen pixels\n    const wOffset = workarea.offset();\n    const wOffsetLeft = wOffset['left'] + rulerwidth;\n    const wOffsetTop = wOffset['top'] + rulerwidth;\n\n    const delta = (evt.wheelDelta) ? evt.wheelDelta : (evt.detail) ? -evt.detail : 0;\n    if (!delta) { return; }\n\n    let factor = Math.max(3 / 4, Math.min(4 / 3, (delta)));\n\n    let wZoom, hZoom;\n    if (factor > 1) {\n      wZoom = Math.ceil(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.ceil(editorH / workareaViewH * factor * 100) / 100;\n    } else {\n      wZoom = Math.floor(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.floor(editorH / workareaViewH * factor * 100) / 100;\n    }\n    let zoomlevel = Math.min(wZoom, hZoom);\n    zoomlevel = Math.min(10, Math.max(0.01, zoomlevel));\n    if (zoomlevel === currentZoom) {\n      return;\n    }\n    factor = zoomlevel / currentZoom;\n\n    // top left of workarea in content pixels before zoom\n    const topLeftOld = transformPoint(wOffsetLeft, wOffsetTop, rootSctm);\n\n    // top left of workarea in content pixels after zoom\n    const topLeftNew = {\n      x: pt.x - (pt.x - topLeftOld.x) / factor,\n      y: pt.y - (pt.y - topLeftOld.y) / factor\n    };\n\n    // top left of workarea in canvas pixels relative to content after zoom\n    const topLeftNewCanvas = {\n      x: topLeftNew.x * zoomlevel,\n      y: topLeftNew.y * zoomlevel\n    };\n\n    // new center in canvas pixels\n    const newCtr = {\n      x: topLeftNewCanvas.x - rulerwidth + editorFullW / 2,\n      y: topLeftNewCanvas.y - rulerwidth + editorFullH / 2\n    };\n\n    canvas.setZoom(zoomlevel);\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    call('updateCanvas', {center: false, newCtr});\n    call('zoomDone');\n  }\n);\n}());\n\n/**\n* Group: Text edit functions\n* Functions relating to editing text elements\n* @namespace {PlainObject} textActions\n* @memberof module:svgcanvas.SvgCanvas#\n*/\nconst textActions = canvas.textActions = (function () {\nlet curtext;\nlet textinput;\nlet cursor;\nlet selblock;\nlet blinker;\nlet chardata = [];\nlet textbb; // , transbb;\nlet matrix;\nlet lastX, lastY;\nlet allowDbl;\n\nfunction setCursor (index) {\n  const empty = (textinput.value === '');\n  $(textinput).focus();\n\n  if (!arguments.length) {\n    if (empty) {\n      index = 0;\n    } else {\n      if (textinput.selectionEnd !== textinput.selectionStart) { return; }\n      index = textinput.selectionEnd;\n    }\n  }\n\n  const charbb = chardata[index];\n  if (!empty) {\n    textinput.setSelectionRange(index, index);\n  }\n  cursor = getElem('text_cursor');\n  if (!cursor) {\n    cursor = document.createElementNS(NS.SVG, 'line');\n    assignAttributes(cursor, {\n      id: 'text_cursor',\n      stroke: '#333',\n      'stroke-width': 1\n    });\n    cursor = getElem('selectorParentGroup').appendChild(cursor);\n  }\n\n  if (!blinker) {\n    blinker = setInterval(function () {\n      const show = (cursor.getAttribute('display') === 'none');\n      cursor.setAttribute('display', show ? 'inline' : 'none');\n    }, 600);\n  }\n\n  const startPt = ptToScreen(charbb.x, textbb.y);\n  const endPt = ptToScreen(charbb.x, (textbb.y + textbb.height));\n\n  assignAttributes(cursor, {\n    x1: startPt.x,\n    y1: startPt.y,\n    x2: endPt.x,\n    y2: endPt.y,\n    visibility: 'visible',\n    display: 'inline'\n  });\n\n  if (selblock) { selblock.setAttribute('d', ''); }\n}\n\nfunction setSelection (start, end, skipInput) {\n  if (start === end) {\n    setCursor(end);\n    return;\n  }\n\n  if (!skipInput) {\n    textinput.setSelectionRange(start, end);\n  }\n\n  selblock = getElem('text_selectblock');\n  if (!selblock) {\n    selblock = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(selblock, {\n      id: 'text_selectblock',\n      fill: 'green',\n      opacity: 0.5,\n      style: 'pointer-events:none'\n    });\n    getElem('selectorParentGroup').append(selblock);\n  }\n\n  const startbb = chardata[start];\n  const endbb = chardata[end];\n\n  cursor.setAttribute('visibility', 'hidden');\n\n  const tl = ptToScreen(startbb.x, textbb.y),\n    tr = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y),\n    bl = ptToScreen(startbb.x, textbb.y + textbb.height),\n    br = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y + textbb.height);\n\n  const dstr = 'M' + tl.x + ',' + tl.y +\n    ' L' + tr.x + ',' + tr.y +\n    ' ' + br.x + ',' + br.y +\n    ' ' + bl.x + ',' + bl.y + 'z';\n\n  assignAttributes(selblock, {\n    d: dstr,\n    display: 'inline'\n  });\n}\n\nfunction getIndexFromPoint (mouseX, mouseY) {\n  // Position cursor here\n  const pt = svgroot.createSVGPoint();\n  pt.x = mouseX;\n  pt.y = mouseY;\n\n  // No content, so return 0\n  if (chardata.length === 1) { return 0; }\n  // Determine if cursor should be on left or right of character\n  let charpos = curtext.getCharNumAtPosition(pt);\n  if (charpos < 0) {\n    // Out of text range, look at mouse coords\n    charpos = chardata.length - 2;\n    if (mouseX <= chardata[0].x) {\n      charpos = 0;\n    }\n  } else if (charpos >= chardata.length - 2) {\n    charpos = chardata.length - 2;\n  }\n  const charbb = chardata[charpos];\n  const mid = charbb.x + (charbb.width / 2);\n  if (mouseX > mid) {\n    charpos++;\n  }\n  return charpos;\n}\n\nfunction setCursorFromPoint (mouseX, mouseY) {\n  setCursor(getIndexFromPoint(mouseX, mouseY));\n}\n\nfunction setEndSelectionFromPoint (x, y, apply) {\n  const i1 = textinput.selectionStart;\n  const i2 = getIndexFromPoint(x, y);\n\n  const start = Math.min(i1, i2);\n  const end = Math.max(i1, i2);\n  setSelection(start, end, !apply);\n}\n\nfunction screenToPt (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix.inverse());\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  return out;\n}\n\nfunction ptToScreen (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n}\n\n/*\n// Not currently in use\nfunction hideCursor () {\n  if (cursor) {\n    cursor.setAttribute('visibility', 'hidden');\n  }\n}\n*/\n\nfunction selectAll (evt) {\n  setSelection(0, curtext.textContent.length);\n  $(this).unbind(evt);\n}\n\nfunction selectWord (evt) {\n  if (!allowDbl || !curtext) { return; }\n\n  const ept = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = ept.x * currentZoom,\n    mouseY = ept.y * currentZoom;\n  const pt = screenToPt(mouseX, mouseY);\n\n  const index = getIndexFromPoint(pt.x, pt.y);\n  const str = curtext.textContent;\n  const first = str.substr(0, index).replace(/[a-z0-9]+$/i, '').length;\n  const m = str.substr(index).match(/^[a-z0-9]+/i);\n  const last = (m ? m[0].length : 0) + index;\n  setSelection(first, last);\n\n  // Set tripleclick\n  $(evt.target).click(selectAll);\n  setTimeout(function () {\n    $(evt.target).unbind('click', selectAll);\n  }, 300);\n}\n\nreturn /** @lends module:svgcanvas.SvgCanvas#textActions */ {\n  /**\n  * @param {Element} target\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  select (target, x, y) {\n    curtext = target;\n    textActions.toEditMode(x, y);\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  start (elem) {\n    curtext = elem;\n    textActions.toEditMode();\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Element} mouseTarget\n  * @param {Float} startX\n  * @param {Float} startY\n  * @returns {undefined}\n  */\n  mouseDown (evt, mouseTarget, startX, startY) {\n    const pt = screenToPt(startX, startY);\n\n    textinput.focus();\n    setCursorFromPoint(pt.x, pt.y);\n    lastX = startX;\n    lastY = startY;\n\n    // TODO: Find way to block native selection\n  },\n  /**\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseMove (mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n    setEndSelectionFromPoint(pt.x, pt.y);\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseUp (evt, mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n\n    setEndSelectionFromPoint(pt.x, pt.y, true);\n\n    // TODO: Find a way to make this work: Use transformed BBox instead of evt.target\n    // if (lastX === mouseX && lastY === mouseY\n    //   && !rectsIntersect(transbb, {x: pt.x, y: pt.y, width: 0, height: 0})) {\n    //   textActions.toSelectMode(true);\n    // }\n\n    if (\n      evt.target !== curtext &&\n      mouseX < lastX + 2 &&\n      mouseX > lastX - 2 &&\n      mouseY < lastY + 2 &&\n      mouseY > lastY - 2\n    ) {\n      textActions.toSelectMode(true);\n    }\n  },\n  /**\n  * @function\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  setCursor,\n  /**\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  toEditMode (x, y) {\n    allowDbl = false;\n    currentMode = 'textedit';\n    selectorManager.requestSelector(curtext).showGrips(false);\n    // Make selector group accept clicks\n    /* const selector = */ selectorManager.requestSelector(curtext); // Do we need this? Has side effect of setting lock, so keeping for now, but next line wasn't being used\n    // const sel = selector.selectorRect;\n\n    textActions.init();\n\n    $(curtext).css('cursor', 'text');\n\n    // if (supportsEditableText()) {\n    //   curtext.setAttribute('editable', 'simple');\n    //   return;\n    // }\n\n    if (!arguments.length) {\n      setCursor();\n    } else {\n      const pt = screenToPt(x, y);\n      setCursorFromPoint(pt.x, pt.y);\n    }\n\n    setTimeout(function () {\n      allowDbl = true;\n    }, 300);\n  },\n  /**\n  * @param {boolean|Element} selectElem\n  * @fires module:svgcanvas.SvgCanvas#event:selected\n  * @returns {undefined}\n  */\n  toSelectMode (selectElem) {\n    currentMode = 'select';\n    clearInterval(blinker);\n    blinker = null;\n    if (selblock) { $(selblock).attr('display', 'none'); }\n    if (cursor) { $(cursor).attr('visibility', 'hidden'); }\n    $(curtext).css('cursor', 'move');\n\n    if (selectElem) {\n      clearSelection();\n      $(curtext).css('cursor', 'move');\n\n      call('selected', [curtext]);\n      addToSelection([curtext], true);\n    }\n    if (curtext && !curtext.textContent.length) {\n      // No content, so delete\n      canvas.deleteSelectedElements();\n    }\n\n    $(textinput).blur();\n\n    curtext = false;\n\n    // if (supportsEditableText()) {\n    //   curtext.removeAttribute('editable');\n    // }\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  setInputElem (elem) {\n    textinput = elem;\n    // $(textinput).blur(hideCursor);\n  },\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    if (currentMode === 'textedit') {\n      textActions.toSelectMode();\n    }\n  },\n  /**\n  * @param {Element} inputElem Not in use\n  * @returns {undefined}\n  */\n  init (inputElem) {\n    if (!curtext) { return; }\n    let i, end;\n    // if (supportsEditableText()) {\n    //   curtext.select();\n    //   return;\n    // }\n\n    if (!curtext.parentNode) {\n      // Result of the ffClone, need to get correct element\n      curtext = selectedElements[0];\n      selectorManager.requestSelector(curtext).showGrips(false);\n    }\n\n    const str = curtext.textContent;\n    const len = str.length;\n\n    const xform = curtext.getAttribute('transform');\n\n    textbb = utilsGetBBox(curtext);\n\n    matrix = xform ? getMatrix(curtext) : null;\n\n    chardata = [];\n    chardata.length = len;\n    textinput.focus();\n\n    $(curtext).unbind('dblclick', selectWord).dblclick(selectWord);\n\n    if (!len) {\n      end = {x: textbb.x + (textbb.width / 2), width: 0};\n    }\n\n    for (i = 0; i < len; i++) {\n      const start = curtext.getStartPositionOfChar(i);\n      end = curtext.getEndPositionOfChar(i);\n\n      if (!supportsGoodTextCharPos()) {\n        const offset = canvas.contentW * currentZoom;\n        start.x -= offset;\n        end.x -= offset;\n\n        start.x /= currentZoom;\n        end.x /= currentZoom;\n      }\n\n      // Get a \"bbox\" equivalent for each character. Uses the\n      // bbox data of the actual text for y, height purposes\n\n      // TODO: Decide if y, width and height are actually necessary\n      chardata[i] = {\n        x: start.x,\n        y: textbb.y, // start.y?\n        width: end.x - start.x,\n        height: textbb.height\n      };\n    }\n\n    // Add a last bbox for cursor at end of text\n    chardata.push({\n      x: end.x,\n      width: 0\n    });\n    setSelection(textinput.selectionStart, textinput.selectionEnd, true);\n  }\n};\n}());\n\n/**\n* Group: Serialization\n*/\n\n/**\n* Looks at DOM elements inside the `<defs>` to see if they are referred to,\n* removes them from the DOM if they are not.\n* @function module:svgcanvas.SvgCanvas#removeUnusedDefElems\n* @returns {Integer} The number of elements that were removed\n*/\nconst removeUnusedDefElems = this.removeUnusedDefElems = function () {\n  const defs = svgcontent.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (!defs || !defs.length) { return 0; }\n\n  // if (!defs.firstChild) { return; }\n\n  const defelemUses = [];\n  let numRemoved = 0;\n  const attrs = ['fill', 'stroke', 'filter', 'marker-start', 'marker-mid', 'marker-end'];\n  const alen = attrs.length;\n\n  const allEls = svgcontent.getElementsByTagNameNS(NS.SVG, '*');\n  const allLen = allEls.length;\n\n  let i, j;\n  for (i = 0; i < allLen; i++) {\n    const el = allEls[i];\n    for (j = 0; j < alen; j++) {\n      const ref = getUrlFromAttr(el.getAttribute(attrs[j]));\n      if (ref) {\n        defelemUses.push(ref.substr(1));\n      }\n    }\n\n    // gradients can refer to other gradients\n    const href = getHref(el);\n    if (href && href.startsWith('#')) {\n      defelemUses.push(href.substr(1));\n    }\n  }\n\n  const defelems = $(defs).find('linearGradient, radialGradient, filter, marker, svg, symbol');\n  i = defelems.length;\n  while (i--) {\n    const defelem = defelems[i];\n    const {id} = defelem;\n    if (!defelemUses.includes(id)) {\n      // Not found, so remove (but remember)\n      removedElements[id] = defelem;\n      defelem.remove();\n      numRemoved++;\n    }\n  }\n\n  return numRemoved;\n};\n\n/**\n* Main function to set up the SVG content for output.\n* @function module:svgcanvas.SvgCanvas#svgCanvasToString\n* @returns {string} The SVG image for output\n*/\nthis.svgCanvasToString = function () {\n  // keep calling it until there are none to remove\n  while (removeUnusedDefElems() > 0) {}\n\n  pathActions.clear(true);\n\n  // Keep SVG-Edit comment on top\n  $.each(svgcontent.childNodes, function (i, node) {\n    if (i && node.nodeType === 8 && node.data.includes('Created with')) {\n      svgcontent.firstChild.before(node);\n    }\n  });\n\n  // Move out of in-group editing mode\n  if (currentGroup) {\n    draw.leaveContext();\n    selectOnly([currentGroup]);\n  }\n\n  const nakedSvgs = [];\n\n  // Unwrap gsvg if it has no special attributes (only id and style)\n  $(svgcontent).find('g:data(gsvg)').each(function () {\n    const attrs = this.attributes;\n    let len = attrs.length;\n    for (let i = 0; i < len; i++) {\n      if (attrs[i].nodeName === 'id' || attrs[i].nodeName === 'style') {\n        len--;\n      }\n    }\n    // No significant attributes, so ungroup\n    if (len <= 0) {\n      const svg = this.firstChild;\n      nakedSvgs.push(svg);\n      $(this).replaceWith(svg);\n    }\n  });\n  const output = this.svgToString(svgcontent, 0);\n\n  // Rewrap gsvg\n  if (nakedSvgs.length) {\n    $(nakedSvgs).each(function () {\n      groupSvgElem(this);\n    });\n  }\n\n  return output;\n};\n\n/**\n* Sub function ran on each SVG element to convert it to a string as desired.\n* @function module:svgcanvas.SvgCanvas#svgToString\n* @param {Element} elem - The SVG element to convert\n* @param {Integer} indent - Number of spaces to indent this tag\n* @returns {string} The given element as an SVG tag\n*/\nthis.svgToString = function (elem, indent) {\n  const out = [];\n  const unit = curConfig.baseUnit;\n  const unitRe = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n\n  if (elem) {\n    cleanupElement(elem);\n    const attrs = Array.from(elem.attributes);\n    let i;\n    const childs = elem.childNodes;\n    attrs.sort((a, b) => a.name > b.name ? -1 : 1);\n\n    for (i = 0; i < indent; i++) { out.push(' '); }\n    out.push('<'); out.push(elem.nodeName);\n    if (elem.id === 'svgcontent') {\n      // Process root element separately\n      const res = getResolution();\n\n      const vb = '';\n      // TODO: Allow this by dividing all values by current baseVal\n      // Note that this also means we should properly deal with this on import\n      // if (curConfig.baseUnit !== 'px') {\n      //   const unit = curConfig.baseUnit;\n      //   const unitM = getTypeMap()[unit];\n      //   res.w = shortFloat(res.w / unitM);\n      //   res.h = shortFloat(res.h / unitM);\n      //   vb = ' viewBox=\"' + [0, 0, res.w, res.h].join(' ') + '\"';\n      //   res.w += unit;\n      //   res.h += unit;\n      // }\n\n      if (unit !== 'px') {\n        res.w = convertUnit(res.w, unit) + unit;\n        res.h = convertUnit(res.h, unit) + unit;\n      }\n\n      out.push(' width=\"' + res.w + '\" height=\"' + res.h + '\"' + vb + ' xmlns=\"' + NS.SVG + '\"');\n\n      const nsuris = {};\n\n      // Check elements for namespaces, add if found\n      $(elem).find('*').andSelf().each(function () {\n        // const el = this;\n        // for some elements have no attribute\n        const uri = this.namespaceURI;\n        if (uri && !nsuris[uri] && nsMap[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {\n          nsuris[uri] = true;\n          out.push(' xmlns:' + nsMap[uri] + '=\"' + uri + '\"');\n        }\n\n        $.each(this.attributes, function (i, attr) {\n          const uri = attr.namespaceURI;\n          if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {\n            nsuris[uri] = true;\n            out.push(' xmlns:' + nsMap[uri] + '=\"' + uri + '\"');\n          }\n        });\n      });\n\n      i = attrs.length;\n      const attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];\n      while (i--) {\n        const attr = attrs[i];\n        const attrVal = toXml(attr.value);\n\n        // Namespaces have already been dealt with, so skip\n        if (attr.nodeName.startsWith('xmlns:')) { continue; }\n\n        // only serialize attributes we don't use internally\n        if (attrVal !== '' && !attrNames.includes(attr.localName)) {\n          if (!attr.namespaceURI || nsMap[attr.namespaceURI]) {\n            out.push(' ');\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    } else {\n      // Skip empty defs\n      if (elem.nodeName === 'defs' && !elem.firstChild) { return; }\n\n      const mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];\n      for (i = attrs.length - 1; i >= 0; i--) {\n        const attr = attrs[i];\n        let attrVal = toXml(attr.value);\n        // remove bogus attributes added by Gecko\n        if (mozAttrs.includes(attr.localName)) { continue; }\n        if (attrVal !== '') {\n          if (attrVal.startsWith('pointer-events')) { continue; }\n          if (attr.localName === 'class' && attrVal.startsWith('se_')) { continue; }\n          out.push(' ');\n          if (attr.localName === 'd') { attrVal = pathActions.convertPath(elem, true); }\n          if (!isNaN(attrVal)) {\n            attrVal = shortFloat(attrVal);\n          } else if (unitRe.test(attrVal)) {\n            attrVal = shortFloat(attrVal) + unit;\n          }\n\n          // Embed images when saving\n          if (saveOptions.apply &&\n            elem.nodeName === 'image' &&\n            attr.localName === 'href' &&\n            saveOptions.images &&\n            saveOptions.images === 'embed'\n          ) {\n            const img = encodableImages[attrVal];\n            if (img) { attrVal = img; }\n          }\n\n          // map various namespaces to our fixed namespace prefixes\n          // (the default xmlns attribute itself does not get a prefix)\n          if (!attr.namespaceURI || attr.namespaceURI === NS.SVG || nsMap[attr.namespaceURI]) {\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    }\n\n    if (elem.hasChildNodes()) {\n      out.push('>');\n      indent++;\n      let bOneLine = false;\n\n      for (i = 0; i < childs.length; i++) {\n        const child = childs.item(i);\n        switch (child.nodeType) {\n        case 1: // element node\n          out.push('\\n');\n          out.push(this.svgToString(childs.item(i), indent));\n          break;\n        case 3: // text node\n          const str = child.nodeValue.replace(/^\\s+|\\s+$/g, '');\n          if (str !== '') {\n            bOneLine = true;\n            out.push(String(toXml(str)));\n          }\n          break;\n        case 4: // cdata node\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<![CDATA[');\n          out.push(child.nodeValue);\n          out.push(']]>');\n          break;\n        case 8: // comment\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<!--');\n          out.push(child.data);\n          out.push('-->');\n          break;\n        } // switch on node type\n      }\n      indent--;\n      if (!bOneLine) {\n        out.push('\\n');\n        for (i = 0; i < indent; i++) { out.push(' '); }\n      }\n      out.push('</'); out.push(elem.nodeName); out.push('>');\n    } else {\n      out.push('/>');\n    }\n  }\n  return out.join('');\n}; // end svgToString()\n\n/**\n * Function to run when image data is found\n * @callback module:svgcanvas.ImageEmbeddedCallback\n * @param {string|false} result Data URL\n * @returns {undefined}\n */\n/**\n* Converts a given image file to a data URL when possible, then runs a given callback.\n* @function module:svgcanvas.SvgCanvas#embedImage\n* @param {string} src - The path/URL of the image\n* @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found\n* @returns {Promise} Resolves to Data URL (string|false)\n*/\nthis.embedImage = function (src, callback) {\n  return new Promise(function (resolve, reject) {\n    // load in the image and once it's loaded, get the dimensions\n    $(new Image()).load(function (response, status, xhr) {\n      if (status === 'error') {\n        reject(new Error('Error loading image: ' + xhr.status + ' ' + xhr.statusText));\n        return;\n      }\n      // create a canvas the same size as the raster image\n      const cvs = document.createElement('canvas');\n      cvs.width = this.width;\n      cvs.height = this.height;\n      // load the raster image into the canvas\n      cvs.getContext('2d').drawImage(this, 0, 0);\n      // retrieve the data: URL\n      try {\n        let urldata = ';svgedit_url=' + encodeURIComponent(src);\n        urldata = cvs.toDataURL().replace(';base64', urldata + ';base64');\n        encodableImages[src] = urldata;\n      } catch (e) {\n        encodableImages[src] = false;\n      }\n      lastGoodImgUrl = src;\n      if (callback) { callback(encodableImages[src]); }\n      resolve(encodableImages[src]);\n    }).attr('src', src);\n  });\n};\n\n/**\n* Sets a given URL to be a \"last good image\" URL.\n* @function module:svgcanvas.SvgCanvas#setGoodImage\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setGoodImage = function (val) {\n  lastGoodImgUrl = val;\n};\n\n/**\n* Does nothing by default, handled by optional widget/extension.\n* @function module:svgcanvas.SvgCanvas#open\n* @returns {undefined}\n*/\nthis.open = function () {\n};\n\n/**\n* Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.\n* This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save\n* function to the 'saved' event.\n* @function module:svgcanvas.SvgCanvas#save\n* @param {module:svgcanvas.SaveOptions} opts\n* @fires module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\nthis.save = function (opts) {\n  // remove the selected outline before serializing\n  clearSelection();\n  // Update save options if provided\n  if (opts) { $.extend(saveOptions, opts); }\n  saveOptions.apply = true;\n\n  // no need for doctype, see https://jwatt.org/svg/authoring/#doctype-declaration\n  const str = this.svgCanvasToString();\n  call('saved', str);\n};\n\n/**\n* @typedef {GenericObject} module:svgcanvas.IssuesAndCodes\n* @property {string[]} issueCodes The locale-independent code names\n* @property {string[]} issues The localized descriptions\n*/\n\n/**\n* Codes only is useful for locale-independent detection.\n* @returns {module:svgcanvas.IssuesAndCodes}\n*/\nfunction getIssues () {\n  // remove the selected outline before serializing\n  clearSelection();\n\n  // Check for known CanVG issues\n  const issues = [];\n  const issueCodes = [];\n\n  // Selector and notice\n  const issueList = {\n    feGaussianBlur: uiStrings.exportNoBlur,\n    foreignObject: uiStrings.exportNoforeignObject,\n    '[stroke-dasharray]': uiStrings.exportNoDashArray\n  };\n  const content = $(svgcontent);\n\n  // Add font/text check if Canvas Text API is not implemented\n  if (!('font' in $('<canvas>')[0].getContext('2d'))) {\n    issueList.text = uiStrings.exportNoText;\n  }\n\n  $.each(issueList, function (sel, descr) {\n    if (content.find(sel).length) {\n      issueCodes.push(sel);\n      issues.push(descr);\n    }\n  });\n  return {issues, issueCodes};\n}\n\nlet canvg;\n/**\n* @typedef {\"feGaussianBlur\"|\"foreignObject\"|\"[stroke-dasharray]\"|\"text\"} module:svgcanvas.IssueCode\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ImageExportedResults\n* @property {string} datauri Contents as a Data URL\n* @property {string} bloburl May be the empty string\n* @property {string} svg The SVG contents as a string\n* @property {string[]} issues The localization messages of `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes CanVG issues found with the SVG\n* @property {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} type The chosen image type\n* @property {\"image/png\"|\"image/jpeg\"|\"image/bmp\"|\"image/webp\"} mimeType The image MIME type\n* @property {Float} quality A decimal between 0 and 1 (for use with JPEG or WEBP)\n* @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added\n*/\n\n/**\n * Function to run when image data is found\n * @callback module:svgcanvas.ImageExportedCallback\n * @param {module:svgcanvas.ImageExportedResults} obj\n * @returns {undefined}\n */\n/**\n* Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,\n* then calls \"exported\" with an object including the string, image\n* information, and any issues found.\n* @function module:svgcanvas.SvgCanvas#rasterExport\n* @param {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} [imgType=\"PNG\"]\n* @param {Float} [quality] Between 0 and 1\n* @param {string} [exportWindowName]\n* @param {module:svgcanvas.ImageExportedCallback} [cb]\n* @param {PlainObject} [opts]\n* @param {boolean} [opts.avoidEvent]\n* @fires module:svgcanvas.SvgCanvas#event:exported\n* @todo Confirm/fix ICO type\n* @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}\n*/\nthis.rasterExport = function (imgType, quality, exportWindowName, cb, opts = {}) {\n  const type = imgType === 'ICO' ? 'BMP' : (imgType || 'PNG');\n  const mimeType = 'image/' + type.toLowerCase();\n  const {issues, issueCodes} = getIssues();\n  const svg = this.svgCanvasToString();\n\n  return new Promise(async (resolve, reject) => {\n    if (!canvg) {\n      ({canvg} = await importSetGlobal(curConfig.canvgPath + 'canvg.js', {\n        global: 'canvg'\n      }));\n    }\n    if (!$('#export_canvas').length) {\n      $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');\n    }\n    const c = $('#export_canvas')[0];\n    c.width = canvas.contentW;\n    c.height = canvas.contentH;\n\n    await canvg(c, svg);\n    const dataURLType = type.toLowerCase();\n    const datauri = quality\n      ? c.toDataURL('image/' + dataURLType, quality)\n      : c.toDataURL('image/' + dataURLType);\n    let bloburl;\n    function done () {\n      const obj = {\n        datauri, bloburl, svg, issues, issueCodes, type: imgType,\n        mimeType, quality, exportWindowName\n      };\n      if (!opts.avoidEvent) {\n        call('exported', obj);\n      }\n      if (cb) {\n        cb(obj);\n      }\n      resolve(obj);\n    }\n    if (c.toBlob) {\n      c.toBlob((blob) => {\n        bloburl = createObjectURL(blob);\n        done();\n      }, mimeType, quality);\n      return;\n    }\n    bloburl = dataURLToObjectURL(datauri);\n    done();\n  });\n};\n/**\n * @external jsPDF\n */\n/**\n * @typedef {undefined|\"save\"|\"arraybuffer\"|\"blob\"|\"datauristring\"|\"dataurlstring\"|\"dataurlnewwindow\"|\"datauri\"|\"dataurl\"} external:jsPDF.OutputType\n * @todo Newer version to add also allows these `outputType` values \"bloburi\"|\"bloburl\" which return strings, so document here and for `outputType` of `module:svgcanvas.PDFExportedResults` below if added\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.PDFExportedResults\n* @property {string} svg The SVG PDF output\n* @property {string|ArrayBuffer|Blob|window} output The output based on the `outputType`;\n* if `undefined`, \"datauristring\", \"dataurlstring\", \"datauri\",\n* or \"dataurl\", will be a string (`undefined` gives a document, while the others\n* build as Data URLs; \"datauri\" and \"dataurl\" change the location of the current page); if\n* \"arraybuffer\", will return `ArrayBuffer`; if \"blob\", returns a `Blob`;\n* if \"dataurlnewwindow\", will change the current page's location and return a string\n* if in Safari and no window object is found; otherwise opens in, and returns, a new `window`\n* object; if \"save\", will have the same return as \"dataurlnewwindow\" if\n* `navigator.getUserMedia` support is found without `URL.createObjectURL` support; otherwise\n* returns `undefined` but attempts to save\n* @property {external:jsPDF.OutputType} outputType\n* @property {string[]} issues The human-readable localization messages of corresponding `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes\n* @property {string} exportWindowName\n*/\n\n/**\n * Function to run when PDF data is found\n * @callback module:svgcanvas.PDFExportedCallback\n * @param {module:svgcanvas.PDFExportedResults} obj\n * @returns {undefined}\n */\n/**\n* Generates a PDF based on the current image, then calls \"exportedPDF\" with\n* an object including the string, the data URL, and any issues found.\n* @function module:svgcanvas.SvgCanvas#exportPDF\n* @param {string} [exportWindowName] Will also be used for the download file name here\n* @param {external:jsPDF.OutputType} [outputType=\"dataurlstring\"]\n* @param {module:svgcanvas.PDFExportedCallback} [cb]\n* @fires module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}\n*/\nthis.exportPDF = function (\n  exportWindowName,\n  outputType = isChrome() ? 'save' : undefined,\n  cb\n) {\n  const that = this;\n  return new Promise(async (resolve, reject) => {\n    if (!window.jsPDF) {\n      // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n      await importScript([\n        // We do not currently have these paths configurable as they are\n        //   currently global-only, so not Rolled-up\n        'jspdf/underscore-min.js',\n        'jspdf/jspdf.min.js'\n      ]);\n\n      const modularVersion = !('svgEditor' in window) ||\n        !window.svgEditor ||\n        window.svgEditor.modules !== false;\n      // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n      await importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {\n        type: modularVersion\n          ? 'module'\n          : 'text/javascript'\n      });\n      // await importModule('jspdf/jspdf.plugin.svgToPdf.js');\n    }\n\n    const res = getResolution();\n    const orientation = res.w > res.h ? 'landscape' : 'portrait';\n    const unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes\n\n    // Todo: Give options to use predefined jsPDF formats like \"a4\", etc. from pull-down (with option to keep customizable)\n    const doc = jsPDF({\n      orientation,\n      unit,\n      format: [res.w, res.h]\n      // , compressPdf: true\n    });\n    const docTitle = getDocumentTitle();\n    doc.setProperties({\n      title: docTitle /* ,\n      subject: '',\n      author: '',\n      keywords: '',\n      creator: '' */\n    });\n    const {issues, issueCodes} = getIssues();\n    const svg = that.svgCanvasToString();\n    doc.addSVG(svg, 0, 0);\n\n    // doc.output('save'); // Works to open in a new\n    //  window; todo: configure this and other export\n    //  options to optionally work in this manner as\n    //  opposed to opening a new tab\n    outputType = outputType || 'dataurlstring';\n    const obj = {svg, issues, issueCodes, exportWindowName, outputType};\n    obj.output = doc.output(outputType, outputType === 'save' ? (exportWindowName || 'svg.pdf') : undefined);\n    if (cb) {\n      cb(obj);\n    }\n    resolve(obj);\n    call('exportedPDF', obj);\n  });\n};\n\n/**\n* Returns the current drawing as raw SVG XML text.\n* @function module:svgcanvas.SvgCanvas#getSvgString\n* @returns {string} The current drawing as raw SVG XML text.\n*/\nthis.getSvgString = function () {\n  saveOptions.apply = false;\n  return this.svgCanvasToString();\n};\n\n/**\n* This function determines whether to use a nonce in the prefix, when\n* generating IDs for future documents in SVG-Edit.\n* If you're controlling SVG-Edit externally, and want randomized IDs, call\n* this BEFORE calling `svgCanvas.setSvgString`.\n* @function module:svgcanvas.SvgCanvas#randomizeIds\n* @param {boolean} [enableRandomization] If true, adds a nonce to the prefix. Thus\n* `svgCanvas.randomizeIds() <==> svgCanvas.randomizeIds(true)`\n* @returns {undefined}\n*/\nthis.randomizeIds = function (enableRandomization) {\n  if (arguments.length > 0 && enableRandomization === false) {\n    draw.randomizeIds(false, getCurrentDrawing());\n  } else {\n    draw.randomizeIds(true, getCurrentDrawing());\n  }\n};\n\n/**\n* Ensure each element has a unique ID.\n* @function module:svgcanvas.SvgCanvas#uniquifyElems\n* @param {Element} g - The parent element of the tree to give unique IDs\n* @returns {undefined}\n*/\nconst uniquifyElems = this.uniquifyElems = function (g) {\n  const ids = {};\n  // TODO: Handle markers and connectors. These are not yet re-identified properly\n  // as their referring elements do not get remapped.\n  //\n  // <marker id='se_marker_end_svg_7'/>\n  // <polyline id='svg_7' se:connector='svg_1 svg_6' marker-end='url(#se_marker_end_svg_7)'/>\n  //\n  // Problem #1: if svg_1 gets renamed, we do not update the polyline's se:connector attribute\n  // Problem #2: if the polyline svg_7 gets renamed, we do not update the marker id nor the polyline's marker-end attribute\n  const refElems = ['filter', 'linearGradient', 'pattern', 'radialGradient', 'symbol', 'textPath', 'use'];\n\n  walkTree(g, function (n) {\n    // if it's an element node\n    if (n.nodeType === 1) {\n      // and the element has an ID\n      if (n.id) {\n        // and we haven't tracked this ID yet\n        if (!(n.id in ids)) {\n          // add this id to our map\n          ids[n.id] = {elem: null, attrs: [], hrefs: []};\n        }\n        ids[n.id].elem = n;\n      }\n\n      // now search for all attributes on this element that might refer\n      // to other elements\n      $.each(refAttrs, function (i, attr) {\n        const attrnode = n.getAttributeNode(attr);\n        if (attrnode) {\n          // the incoming file has been sanitized, so we should be able to safely just strip off the leading #\n          const url = getUrlFromAttr(attrnode.value),\n            refid = url ? url.substr(1) : null;\n          if (refid) {\n            if (!(refid in ids)) {\n              // add this id to our map\n              ids[refid] = {elem: null, attrs: [], hrefs: []};\n            }\n            ids[refid].attrs.push(attrnode);\n          }\n        }\n      });\n\n      // check xlink:href now\n      const href = getHref(n);\n      // TODO: what if an <image> or <a> element refers to an element internally?\n      if (href && refElems.includes(n.nodeName)) {\n        const refid = href.substr(1);\n        if (refid) {\n          if (!(refid in ids)) {\n            // add this id to our map\n            ids[refid] = {elem: null, attrs: [], hrefs: []};\n          }\n          ids[refid].hrefs.push(n);\n        }\n      }\n    }\n  });\n\n  // in ids, we now have a map of ids, elements and attributes, let's re-identify\n  for (const oldid in ids) {\n    if (!oldid) { continue; }\n    const {elem} = ids[oldid];\n    if (elem) {\n      const newid = getNextId();\n\n      // assign element its new id\n      elem.id = newid;\n\n      // remap all url() attributes\n      const {attrs} = ids[oldid];\n      let j = attrs.length;\n      while (j--) {\n        const attr = attrs[j];\n        attr.ownerElement.setAttribute(attr.name, 'url(#' + newid + ')');\n      }\n\n      // remap all href attributes\n      const hreffers = ids[oldid].hrefs;\n      let k = hreffers.length;\n      while (k--) {\n        const hreffer = hreffers[k];\n        setHref(hreffer, '#' + newid);\n      }\n    }\n  }\n};\n\n/**\n* Assigns reference data for each use element.\n* @function module:svgcanvas.SvgCanvas#setUseData\n* @param {Element} parent\n* @returns {undefined}\n*/\nconst setUseData = this.setUseData = function (parent) {\n  let elems = $(parent);\n\n  if (parent.tagName !== 'use') {\n    elems = elems.find('use');\n  }\n\n  elems.each(function () {\n    const id = getHref(this).substr(1);\n    const refElem = getElem(id);\n    if (!refElem) { return; }\n    $(this).data('ref', refElem);\n    if (refElem.tagName === 'symbol' || refElem.tagName === 'svg') {\n      $(this).data('symbol', refElem).data('ref', refElem);\n    }\n  });\n};\n\n/**\n* Converts gradients from userSpaceOnUse to objectBoundingBox.\n* @function module:svgcanvas.SvgCanvas#convertGradients\n* @param {Element} elem\n* @returns {undefined}\n*/\nconst convertGradients = this.convertGradients = function (elem) {\n  let elems = $(elem).find('linearGradient, radialGradient');\n  if (!elems.length && isWebkit()) {\n    // Bug in webkit prevents regular *Gradient selector search\n    elems = $(elem).find('*').filter(function () {\n      return (this.tagName.includes('Gradient'));\n    });\n  }\n\n  elems.each(function () {\n    const grad = this;\n    if ($(grad).attr('gradientUnits') === 'userSpaceOnUse') {\n      // TODO: Support more than one element with this ref by duplicating parent grad\n      const elems = $(svgcontent).find('[fill=\"url(#' + grad.id + ')\"],[stroke=\"url(#' + grad.id + ')\"]');\n      if (!elems.length) { return; }\n\n      // get object's bounding box\n      const bb = utilsGetBBox(elems[0]);\n\n      // This will occur if the element is inside a <defs> or a <symbol>,\n      // in which we shouldn't need to convert anyway.\n      if (!bb) { return; }\n\n      if (grad.tagName === 'linearGradient') {\n        const gCoords = $(grad).attr(['x1', 'y1', 'x2', 'y2']);\n\n        // If has transform, convert\n        const tlist = grad.gradientTransform.baseVal;\n        if (tlist && tlist.numberOfItems > 0) {\n          const m = transformListToTransform(tlist).matrix;\n          const pt1 = transformPoint(gCoords.x1, gCoords.y1, m);\n          const pt2 = transformPoint(gCoords.x2, gCoords.y2, m);\n\n          gCoords.x1 = pt1.x;\n          gCoords.y1 = pt1.y;\n          gCoords.x2 = pt2.x;\n          gCoords.y2 = pt2.y;\n          grad.removeAttribute('gradientTransform');\n        }\n\n        $(grad).attr({\n          x1: (gCoords.x1 - bb.x) / bb.width,\n          y1: (gCoords.y1 - bb.y) / bb.height,\n          x2: (gCoords.x2 - bb.x) / bb.width,\n          y2: (gCoords.y2 - bb.y) / bb.height\n        });\n        grad.removeAttribute('gradientUnits');\n      }\n      // else {\n      //   Note: radialGradient elements cannot be easily converted\n      //   because userSpaceOnUse will keep circular gradients, while\n      //   objectBoundingBox will x/y scale the gradient according to\n      //   its bbox.\n      //\n      //   For now we'll do nothing, though we should probably have\n      //   the gradient be updated as the element is moved, as\n      //   inkscape/illustrator do.\n      //\n      //   const gCoords = $(grad).attr(['cx', 'cy', 'r']);\n      //\n      //   $(grad).attr({\n      //     cx: (gCoords.cx - bb.x) / bb.width,\n      //     cy: (gCoords.cy - bb.y) / bb.height,\n      //     r: gCoords.r\n      //   });\n      //\n      //   grad.removeAttribute('gradientUnits');\n      // }\n    }\n  });\n};\n\n/**\n* Converts selected/given `<use>` or child SVG element to a group.\n* @function module:svgcanvas.SvgCanvas#convertToGroup\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nconst convertToGroup = this.convertToGroup = function (elem) {\n  if (!elem) {\n    elem = selectedElements[0];\n  }\n  const $elem = $(elem);\n  const batchCmd = new BatchCommand();\n  let ts;\n\n  if ($elem.data('gsvg')) {\n    // Use the gsvg as the new group\n    const svg = elem.firstChild;\n    const pt = $(svg).attr(['x', 'y']);\n\n    $(elem.firstChild.firstChild).unwrap();\n    $(elem).removeData('gsvg');\n\n    const tlist = getTransformList(elem);\n    const xform = svgroot.createSVGTransform();\n    xform.setTranslate(pt.x, pt.y);\n    tlist.appendItem(xform);\n    recalculateDimensions(elem);\n    call('selected', [elem]);\n  } else if ($elem.data('symbol')) {\n    elem = $elem.data('symbol');\n\n    ts = $elem.attr('transform');\n    const pos = $elem.attr(['x', 'y']);\n\n    const vb = elem.getAttribute('viewBox');\n\n    if (vb) {\n      const nums = vb.split(' ');\n      pos.x -= +nums[0];\n      pos.y -= +nums[1];\n    }\n\n    // Not ideal, but works\n    ts += ' translate(' + (pos.x || 0) + ',' + (pos.y || 0) + ')';\n\n    const prev = $elem.prev();\n\n    // Remove <use> element\n    batchCmd.addSubCommand(new RemoveElementCommand($elem[0], $elem[0].nextSibling, $elem[0].parentNode));\n    $elem.remove();\n\n    // See if other elements reference this symbol\n    const hasMore = $(svgcontent).find('use:data(symbol)').length;\n\n    const g = svgdoc.createElementNS(NS.SVG, 'g');\n    const childs = elem.childNodes;\n\n    let i;\n    for (i = 0; i < childs.length; i++) {\n      g.append(childs[i].cloneNode(true));\n    }\n\n    // Duplicate the gradients for Gecko, since they weren't included in the <symbol>\n    if (isGecko()) {\n      const dupeGrads = $(findDefs()).children('linearGradient,radialGradient,pattern').clone();\n      $(g).append(dupeGrads);\n    }\n\n    if (ts) {\n      g.setAttribute('transform', ts);\n    }\n\n    const parent = elem.parentNode;\n\n    uniquifyElems(g);\n\n    // Put the dupe gradients back into <defs> (after uniquifying them)\n    if (isGecko()) {\n      $(findDefs()).append($(g).find('linearGradient,radialGradient,pattern'));\n    }\n\n    // now give the g itself a new id\n    g.id = getNextId();\n\n    prev.after(g);\n\n    if (parent) {\n      if (!hasMore) {\n        // remove symbol/svg element\n        const {nextSibling} = elem;\n        elem.remove();\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n      }\n      batchCmd.addSubCommand(new InsertElementCommand(g));\n    }\n\n    setUseData(g);\n\n    if (isGecko()) {\n      convertGradients(findDefs());\n    } else {\n      convertGradients(g);\n    }\n\n    // recalculate dimensions on the top-level children so that unnecessary transforms\n    // are removed\n    walkTreePost(g, function (n) {\n      try {\n        recalculateDimensions(n);\n      } catch (e) {\n        console.log(e);\n      }\n    });\n\n    // Give ID for any visible element missing one\n    $(g).find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    selectOnly([g]);\n\n    const cm = pushGroupProperties(g, true);\n    if (cm) {\n      batchCmd.addSubCommand(cm);\n    }\n\n    addCommandToHistory(batchCmd);\n  } else {\n    console.log('Unexpected element to ungroup:', elem);\n  }\n};\n\n/**\n* This function sets the current drawing as the input SVG XML.\n* @function module:svgcanvas.SvgCanvas#setSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @param {boolean} [preventUndo=false] - Indicates if we want to do the\n* changes without adding them to the undo stack - e.g. for initializing a\n* drawing on page load.\n* @fires module:svgcanvas.SvgCanvas#event:setnonce\n* @fires module:svgcanvas.SvgCanvas#event:unsetnonce\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} This function returns `false` if the set was\n*     unsuccessful, `true` otherwise.\n*/\nthis.setSvgString = function (xmlString, preventUndo) {\n  try {\n    // convert string into XML document\n    const newDoc = text2xml(xmlString);\n    if (newDoc.firstElementChild &&\n      newDoc.firstElementChild.namespaceURI !== NS.SVG) {\n      return false;\n    }\n\n    this.prepareSvg(newDoc);\n\n    const batchCmd = new BatchCommand('Change Source');\n\n    // remove old svg document\n    const {nextSibling} = svgcontent;\n    const oldzoom = svgroot.removeChild(svgcontent);\n    batchCmd.addSubCommand(new RemoveElementCommand(oldzoom, nextSibling, svgroot));\n\n    // set new svg document\n    // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n    if (svgdoc.adoptNode) {\n      svgcontent = svgdoc.adoptNode(newDoc.documentElement);\n    } else {\n      svgcontent = svgdoc.importNode(newDoc.documentElement, true);\n    }\n\n    svgroot.append(svgcontent);\n    const content = $(svgcontent);\n\n    canvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n    // retrieve or set the nonce\n    const nonce = getCurrentDrawing().getNonce();\n    if (nonce) {\n      call('setnonce', nonce);\n    } else {\n      call('unsetnonce');\n    }\n\n    // change image href vals if possible\n    content.find('image').each(function () {\n      const image = this;\n      preventClickDefault(image);\n      const val = getHref(this);\n      if (val) {\n        if (val.startsWith('data:')) {\n          // Check if an SVG-edit data URI\n          const m = val.match(/svgedit_url=(.*?);/);\n          if (m) {\n            const url = decodeURIComponent(m[1]);\n            $(new Image()).load(function () {\n              image.setAttributeNS(NS.XLINK, 'xlink:href', url);\n            }).attr('src', url);\n          }\n        }\n        // Add to encodableImages if it loads\n        canvas.embedImage(val);\n      }\n    });\n\n    // Wrap child SVGs in group elements\n    content.find('svg').each(function () {\n      // Skip if it's in a <defs>\n      if ($(this).closest('defs').length) { return; }\n\n      uniquifyElems(this);\n\n      // Check if it already has a gsvg group\n      const pa = this.parentNode;\n      if (pa.childNodes.length === 1 && pa.nodeName === 'g') {\n        $(pa).data('gsvg', this);\n        pa.id = pa.id || getNextId();\n      } else {\n        groupSvgElem(this);\n      }\n    });\n\n    // For Firefox: Put all paint elems in defs\n    if (isGecko()) {\n      content.find('linearGradient, radialGradient, pattern').appendTo(findDefs());\n    }\n\n    // Set ref element for <use> elements\n\n    // TODO: This should also be done if the object is re-added through \"redo\"\n    setUseData(content);\n\n    convertGradients(content[0]);\n\n    const attrs = {\n      id: 'svgcontent',\n      overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden'\n    };\n\n    let percs = false;\n\n    // determine proper size\n    if (content.attr('viewBox')) {\n      const vb = content.attr('viewBox').split(' ');\n      attrs.width = vb[2];\n      attrs.height = vb[3];\n    // handle content that doesn't have a viewBox\n    } else {\n      $.each(['width', 'height'], function (i, dim) {\n        // Set to 100 if not given\n        const val = content.attr(dim) || '100%';\n\n        if (String(val).substr(-1) === '%') {\n          // Use user units if percentage given\n          percs = true;\n        } else {\n          attrs[dim] = convertToNum(dim, val);\n        }\n      });\n    }\n\n    // identify layers\n    draw.identifyLayers();\n\n    // Give ID for any visible layer children missing one\n    content.children().find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    // Percentage width/height, so let's base it on visible elements\n    if (percs) {\n      const bb = getStrokedBBoxDefaultVisible();\n      attrs.width = bb.width + bb.x;\n      attrs.height = bb.height + bb.y;\n    }\n\n    // Just in case negative numbers are given or\n    // result from the percs calculation\n    if (attrs.width <= 0) { attrs.width = 100; }\n    if (attrs.height <= 0) { attrs.height = 100; }\n\n    content.attr(attrs);\n    this.contentW = attrs.width;\n    this.contentH = attrs.height;\n\n    batchCmd.addSubCommand(new InsertElementCommand(svgcontent));\n    // update root to the correct size\n    const changes = content.attr(['width', 'height']);\n    batchCmd.addSubCommand(new ChangeElementCommand(svgroot, changes));\n\n    // reset zoom\n    currentZoom = 1;\n\n    // reset transform lists\n    resetListMap();\n    clearSelection();\n    pathModule.clearData();\n    svgroot.append(selectorManager.selectorParentGroup);\n\n    if (!preventUndo) addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e);\n    return false;\n  }\n\n  return true;\n};\n\n/**\n* This function imports the input SVG XML as a `<symbol>` in the `<defs>`, then adds a\n* `<use>` to the current layer.\n* @function module:svgcanvas.SvgCanvas#importSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {null|Element} This function returns null if the import was unsuccessful, or the element otherwise.\n* @todo\n* - properly handle if namespace is introduced by imported content (must add to svgcontent\n* and update all prefixes in the imported node)\n* - properly handle recalculating dimensions, `recalculateDimensions()` doesn't handle\n* arbitrary transform lists, but makes some assumptions about how the transform list\n* was obtained\n*/\nthis.importSvgString = function (xmlString) {\n  let j, ts, useEl;\n  try {\n    // Get unique ID\n    const uid = encode64(xmlString.length + xmlString).substr(0, 32);\n\n    let useExisting = false;\n    // Look for symbol and make sure symbol exists in image\n    if (importIds[uid]) {\n      if ($(importIds[uid].symbol).parents('#svgroot').length) {\n        useExisting = true;\n      }\n    }\n\n    const batchCmd = new BatchCommand('Import Image');\n    let symbol;\n    if (useExisting) {\n      ({symbol} = importIds[uid]);\n      ts = importIds[uid].xform;\n    } else {\n      // convert string into XML document\n      const newDoc = text2xml(xmlString);\n\n      this.prepareSvg(newDoc);\n\n      // import new svg document into our document\n      let svg;\n      // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n      if (svgdoc.adoptNode) {\n        svg = svgdoc.adoptNode(newDoc.documentElement);\n      } else {\n        svg = svgdoc.importNode(newDoc.documentElement, true);\n      }\n\n      uniquifyElems(svg);\n\n      const innerw = convertToNum('width', svg.getAttribute('width')),\n        innerh = convertToNum('height', svg.getAttribute('height')),\n        innervb = svg.getAttribute('viewBox'),\n        // if no explicit viewbox, create one out of the width and height\n        vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];\n      for (j = 0; j < 4; ++j) {\n        vb[j] = +(vb[j]);\n      }\n\n      // TODO: properly handle preserveAspectRatio\n      const // canvasw = +svgcontent.getAttribute('width'),\n        canvash = +svgcontent.getAttribute('height');\n      // imported content should be 1/3 of the canvas on its largest dimension\n\n      if (innerh > innerw) {\n        ts = 'scale(' + (canvash / 3) / vb[3] + ')';\n      } else {\n        ts = 'scale(' + (canvash / 3) / vb[2] + ')';\n      }\n\n      // Hack to make recalculateDimensions understand how to scale\n      ts = 'translate(0) ' + ts + ' translate(0)';\n\n      symbol = svgdoc.createElementNS(NS.SVG, 'symbol');\n      const defs = findDefs();\n\n      if (isGecko()) {\n        // Move all gradients into root for Firefox, workaround for this bug:\n        // https://bugzilla.mozilla.org/show_bug.cgi?id=353575\n        // TODO: Make this properly undo-able.\n        $(svg).find('linearGradient, radialGradient, pattern').appendTo(defs);\n      }\n\n      while (svg.firstChild) {\n        const first = svg.firstChild;\n        symbol.append(first);\n      }\n      const attrs = svg.attributes;\n      for (let i = 0; i < attrs.length; i++) {\n        const attr = attrs[i];\n        symbol.setAttribute(attr.nodeName, attr.value);\n      }\n      symbol.id = getNextId();\n\n      // Store data\n      importIds[uid] = {\n        symbol,\n        xform: ts\n      };\n\n      findDefs().append(symbol);\n      batchCmd.addSubCommand(new InsertElementCommand(symbol));\n    }\n\n    useEl = svgdoc.createElementNS(NS.SVG, 'use');\n    useEl.id = getNextId();\n    setHref(useEl, '#' + symbol.id);\n\n    (currentGroup || getCurrentDrawing().getCurrentLayer()).append(useEl);\n    batchCmd.addSubCommand(new InsertElementCommand(useEl));\n    clearSelection();\n\n    useEl.setAttribute('transform', ts);\n    recalculateDimensions(useEl);\n    $(useEl).data('symbol', symbol).data('ref', symbol);\n    addToSelection([useEl]);\n\n    // TODO: Find way to add this in a recalculateDimensions-parsable way\n    // if (vb[0] !== 0 || vb[1] !== 0) {\n    //   ts = 'translate(' + (-vb[0]) + ',' + (-vb[1]) + ') ' + ts;\n    // }\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e);\n    return null;\n  }\n\n  // we want to return the element so we can automatically select it\n  return useEl;\n};\n\n// Could deprecate, but besides external uses, their usage makes clear that\n//  canvas is a dependency for all of these\n[\n  'identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer',\n  'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition',\n  'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers',\n  'leaveContext', 'setContext'\n].forEach((prop) => {\n  canvas[prop] = draw[prop];\n});\ndraw.init(\n  /**\n  * @implements {module:draw.DrawCanvasInit}\n  */\n  {\n    pathActions,\n    getCurrentGroup () {\n      return currentGroup;\n    },\n    setCurrentGroup (cg) {\n      currentGroup = cg;\n    },\n    getSelectedElements,\n    getSVGContent,\n    undoMgr,\n    elData,\n    getCurrentDrawing,\n    clearSelection,\n    call,\n    addCommandToHistory,\n    /**\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    changeSVGContent () {\n      call('changed', [svgcontent]);\n    }\n  }\n);\n\n/**\n* Group: Document functions\n*/\n\n/**\n* Clears the current document. This is not an undoable action.\n* @function module:svgcanvas.SvgCanvas#clear\n* @fires module:svgcanvas.SvgCanvas#event:cleared\n* @returns {undefined}\n*/\nthis.clear = function () {\n  pathActions.clear();\n\n  clearSelection();\n\n  // clear the svgcontent node\n  canvas.clearSvgContentElement();\n\n  // create new document\n  canvas.current_drawing_ = new draw.Drawing(svgcontent);\n\n  // create empty first layer\n  canvas.createLayer('Layer 1');\n\n  // clear the undo stack\n  canvas.undoMgr.resetUndoStack();\n\n  // reset the selector manager\n  selectorManager.initGroup();\n\n  // reset the rubber band box\n  rubberBox = selectorManager.getRubberBandBox();\n\n  call('cleared');\n};\n\n// Alias function\nthis.linkControlPoints = pathActions.linkControlPoints;\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @returns {Element} The content DOM element\n*/\nthis.getContentElem = function () { return svgcontent; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getRootElem\n* @returns {SVGSVGElement} The root DOM element\n*/\nthis.getRootElem = function () { return svgroot; };\n\n/**\n* @typedef {PlainObject} DimensionsAndZoom\n* @property {Float} w Width\n* @property {Float} h Height\n* @property {Float} zoom Zoom\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getResolution\n* @returns {DimensionsAndZoom} The current dimensions and zoom level in an object\n*/\nconst getResolution = this.getResolution = function () {\n//    const vb = svgcontent.getAttribute('viewBox').split(' ');\n//    return {w:vb[2], h:vb[3], zoom: currentZoom};\n\n  const w = svgcontent.getAttribute('width') / currentZoom;\n  const h = svgcontent.getAttribute('height') / currentZoom;\n\n  return {\n    w,\n    h,\n    zoom: currentZoom\n  };\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getSnapToGrid\n* @returns {boolean} The current snap to grid setting\n*/\nthis.getSnapToGrid = function () { return curConfig.gridSnapping; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getVersion\n* @returns {string} A string which describes the revision number of SvgCanvas.\n*/\nthis.getVersion = function () {\n  return 'svgcanvas.js ($Rev$)';\n};\n\n/**\n* Update interface strings with given values.\n* @function module:svgcanvas.SvgCanvas#setUiStrings\n* @param {module:path.uiStrings} strs - Object with strings (see the [locales API]{@link module:locale.LocaleStrings} and the [tutorial]{@tutorial LocaleDocs})\n* @returns {undefined}\n*/\nthis.setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.notification);\n  pathModule.setUiStrings(strs);\n};\n\n/**\n* Update configuration options with given values.\n* @function module:svgcanvas.SvgCanvas#setConfig\n* @param {module:SVGEditor.Config} opts - Object with options\n* @returns {undefined}\n*/\nthis.setConfig = function (opts) {\n  Object.assign(curConfig, opts);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getTitle\n* @param {Element} elem\n* @returns {string|undefined} the current group/SVG's title contents\n*/\nthis.getTitle = function (elem) {\n  elem = elem || selectedElements[0];\n  if (!elem) { return; }\n  elem = $(elem).data('gsvg') || $(elem).data('symbol') || elem;\n  const childs = elem.childNodes;\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      return childs[i].textContent;\n    }\n  }\n  return '';\n};\n\n/**\n* Sets the group/SVG's title content.\n* @function module:svgcanvas.SvgCanvas#setGroupTitle\n* @param {string} val\n* @todo Combine this with `setDocumentTitle`\n* @returns {undefined}\n*/\nthis.setGroupTitle = function (val) {\n  let elem = selectedElements[0];\n  elem = $(elem).data('gsvg') || elem;\n\n  const ts = $(elem).children('title');\n\n  const batchCmd = new BatchCommand('Set Label');\n\n  let title;\n  if (!val.length) {\n    // Remove title element\n    const tsNextSibling = ts.nextSibling;\n    batchCmd.addSubCommand(new RemoveElementCommand(ts[0], tsNextSibling, elem));\n    ts.remove();\n  } else if (ts.length) {\n    // Change title contents\n    title = ts[0];\n    batchCmd.addSubCommand(new ChangeElementCommand(title, {'#text': title.textContent}));\n    title.textContent = val;\n  } else {\n    // Add title element\n    title = svgdoc.createElementNS(NS.SVG, 'title');\n    title.textContent = val;\n    $(elem).prepend(title);\n    batchCmd.addSubCommand(new InsertElementCommand(title));\n  }\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getDocumentTitle\n* @returns {string|undefined} The current document title or an empty string if not found\n*/\nconst getDocumentTitle = this.getDocumentTitle = function () {\n  return canvas.getTitle(svgcontent);\n};\n\n/**\n* Adds/updates a title element for the document with the given name.\n* This is an undoable action.\n* @function module:svgcanvas.SvgCanvas#setDocumentTitle\n* @param {string} newTitle - String with the new title\n* @returns {undefined}\n*/\nthis.setDocumentTitle = function (newTitle) {\n  const childs = svgcontent.childNodes;\n  let docTitle = false, oldTitle = '';\n\n  const batchCmd = new BatchCommand('Change Image Title');\n\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      docTitle = childs[i];\n      oldTitle = docTitle.textContent;\n      break;\n    }\n  }\n  if (!docTitle) {\n    docTitle = svgdoc.createElementNS(NS.SVG, 'title');\n    svgcontent.insertBefore(docTitle, svgcontent.firstChild);\n    // svgcontent.firstChild.before(docTitle); // Ok to replace above with this?\n  }\n\n  if (newTitle.length) {\n    docTitle.textContent = newTitle;\n  } else {\n    // No title given, so element is not necessary\n    docTitle.remove();\n  }\n  batchCmd.addSubCommand(new ChangeElementCommand(docTitle, {'#text': oldTitle}));\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Returns the editor's namespace URL, optionally adding it to the root element.\n* @function module:svgcanvas.SvgCanvas#getEditorNS\n* @param {boolean} [add] - Indicates whether or not to add the namespace value\n* @returns {string} The editor's namespace URL\n*/\nthis.getEditorNS = function (add) {\n  if (add) {\n    svgcontent.setAttribute('xmlns:se', NS.SE);\n  }\n  return NS.SE;\n};\n\n/**\n* Changes the document's dimensions to the given size.\n* @function module:svgcanvas.SvgCanvas#setResolution\n* @param {Float|\"fit\"} x - Number with the width of the new dimensions in user units.\n* Can also be the string \"fit\" to indicate \"fit to content\".\n* @param {Float} y - Number with the height of the new dimensions in user units.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Indicates if resolution change was successful.\n* It will fail on \"fit to content\" option with no content to fit to.\n*/\nthis.setResolution = function (x, y) {\n  const res = getResolution();\n  const {w, h} = res;\n  let batchCmd;\n\n  if (x === 'fit') {\n    // Get bounding box\n    const bbox = getStrokedBBoxDefaultVisible();\n\n    if (bbox) {\n      batchCmd = new BatchCommand('Fit Canvas to Content');\n      const visEls = getVisibleElements();\n      addToSelection(visEls);\n      const dx = [], dy = [];\n      $.each(visEls, function (i, item) {\n        dx.push(bbox.x * -1);\n        dy.push(bbox.y * -1);\n      });\n\n      const cmd = canvas.moveSelectedElements(dx, dy, true);\n      batchCmd.addSubCommand(cmd);\n      clearSelection();\n\n      x = Math.round(bbox.width);\n      y = Math.round(bbox.height);\n    } else {\n      return false;\n    }\n  }\n  if (x !== w || y !== h) {\n    if (!batchCmd) {\n      batchCmd = new BatchCommand('Change Image Dimensions');\n    }\n\n    x = convertToNum('width', x);\n    y = convertToNum('height', y);\n\n    svgcontent.setAttribute('width', x);\n    svgcontent.setAttribute('height', y);\n\n    this.contentW = x;\n    this.contentH = y;\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {width: w, height: h}));\n\n    svgcontent.setAttribute('viewBox', [0, 0, x / currentZoom, y / currentZoom].join(' '));\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {viewBox: ['0 0', w, h].join(' ')}));\n\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  }\n  return true;\n};\n\n/**\n* @typedef {module:jQueryAttr.Attributes} module:svgcanvas.ElementPositionInCanvas\n* @property {Float} x\n* @property {Float} y\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOffset\n* @returns {module:svgcanvas.ElementPositionInCanvas} An object with `x`, `y` values indicating the svgcontent element's\n* position in the editor's canvas.\n*/\nthis.getOffset = function () {\n  return $(svgcontent).attr(['x', 'y']);\n};\n\n/**\n * @typedef {PlainObject} module:svgcanvas.ZoomAndBBox\n * @property {Float} zoom\n * @property {module:utilities.BBoxObject} bbox\n */\n/**\n* Sets the zoom level on the canvas-side based on the given value.\n* @function module:svgcanvas.SvgCanvas#setBBoxZoom\n* @param {\"selection\"|\"canvas\"|\"content\"|\"layer\"|module:SVGEditor.BBoxObjectWithFactor} val - Bounding box object to zoom to or string indicating zoom option. Note: the object value type is defined in `svg-editor.js`\n* @param {Integer} editorW - The editor's workarea box's width\n* @param {Integer} editorH - The editor's workarea box's height\n* @returns {module:svgcanvas.ZoomAndBBox|undefined}\n*/\nthis.setBBoxZoom = function (val, editorW, editorH) {\n  let spacer = 0.85;\n  let bb;\n  const calcZoom = function (bb) {\n    if (!bb) { return false; }\n    const wZoom = Math.round((editorW / bb.width) * 100 * spacer) / 100;\n    const hZoom = Math.round((editorH / bb.height) * 100 * spacer) / 100;\n    const zoom = Math.min(wZoom, hZoom);\n    canvas.setZoom(zoom);\n    return {zoom, bbox: bb};\n  };\n\n  if (typeof val === 'object') {\n    bb = val;\n    if (bb.width === 0 || bb.height === 0) {\n      const newzoom = bb.zoom ? bb.zoom : currentZoom * bb.factor;\n      canvas.setZoom(newzoom);\n      return {zoom: currentZoom, bbox: bb};\n    }\n    return calcZoom(bb);\n  }\n\n  switch (val) {\n  case 'selection':\n    if (!selectedElements[0]) { return; }\n    const selectedElems = $.map(selectedElements, function (n) { if (n) { return n; } });\n    bb = getStrokedBBoxDefaultVisible(selectedElems);\n    break;\n  case 'canvas':\n    const res = getResolution();\n    spacer = 0.95;\n    bb = {width: res.w, height: res.h, x: 0, y: 0};\n    break;\n  case 'content':\n    bb = getStrokedBBoxDefaultVisible();\n    break;\n  case 'layer':\n    bb = getStrokedBBoxDefaultVisible(getVisibleElements(getCurrentDrawing().getCurrentLayer()));\n    break;\n  default:\n    return;\n  }\n  return calcZoom(bb);\n};\n\n/**\n* The zoom level has changed. Supplies the new zoom level as a number (not percentage).\n* @event module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @type {Float}\n*/\n/**\n* The bottom panel was updated\n* @event module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n* @type {PlainObject}\n* @property {boolean} nofill Indicates fill is disabled\n* @property {boolean} nostroke Indicates stroke is disabled\n*/\n/**\n* The element selection has changed (elements were added/removed from selection)\n* @event module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the newly selected elements\n* @property {Element|null} selectedElement The single selected element\n* @property {boolean} multiselected Indicates whether one or more elements were selected\n*/\n/**\n* Called when part of element is in process of changing, generally on\n* mousemove actions like rotate, move, etc.\n* @event module:svgcanvas.SvgCanvas#event:ext-elementTransition\n* @type {PlainObject}\n* @property {Element[]} elems Array of transitioning elements\n*/\n/**\n* One or more elements were changed\n* @event module:svgcanvas.SvgCanvas#event:ext-elementChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the affected elements\n*/\n/**\n* Invoked as soon as the locale is ready\n* @event module:svgcanvas.SvgCanvas#event:ext-langReady\n* @type {PlainObject}\n* @property {string} lang The two-letter language code\n* @property {module:SVGEditor.uiStrings} uiStrings\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n* The language was changed. Two-letter code of the new language.\n* @event module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @type {string}\n*/\n/**\n* Means for an extension to add locale data. The two-letter language code.\n* @event module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @type {PlainObject}\n* @property {string} lang\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n * Called when new image is created\n * @event module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n * @type {undefined}\n */\n/**\n * Called when sidepanel is resized or toggled\n * @event module:svgcanvas.SvgCanvas#event:ext-workareaResized\n * @type {undefined}\n*/\n/**\n * Called upon addition of the extension, or, if svgicons are set,\n * after the icons are ready when extension SVG icons have loaded.\n * @event module:svgcanvas.SvgCanvas#event:ext-callback\n * @type {undefined}\n*/\n\n/**\n* Sets the zoom to the given level.\n* @function module:svgcanvas.SvgCanvas#setZoom\n* @param {Float} zoomLevel - Float indicating the zoom level to change to\n* @fires module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @returns {undefined}\n*/\nthis.setZoom = function (zoomLevel) {\n  const res = getResolution();\n  svgcontent.setAttribute('viewBox', '0 0 ' + res.w / zoomLevel + ' ' + res.h / zoomLevel);\n  currentZoom = zoomLevel;\n  $.each(selectedElements, function (i, elem) {\n    if (!elem) { return; }\n    selectorManager.requestSelector(elem).resize();\n  });\n  pathActions.zoomChange();\n  runExtensions('zoomChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} */ zoomLevel);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMode\n* @returns {string} The current editor mode string\n*/\nthis.getMode = function () {\n  return currentMode;\n};\n\n/**\n* Sets the editor's mode to the given string.\n* @function module:svgcanvas.SvgCanvas#setMode\n* @param {string} name - String with the new mode to change to\n* @returns {undefined}\n*/\nthis.setMode = function (name) {\n  pathActions.clear(true);\n  textActions.clear();\n  curProperties = (selectedElements[0] && selectedElements[0].nodeName === 'text') ? curText : curShape;\n  currentMode = name;\n};\n\n/**\n* Group: Element Styling\n*/\n\n/**\n* @typedef {PlainObject} module:svgcanvas.PaintOptions\n* @property {\"solidColor\"} type\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getColor\n* @param {string} type\n* @returns {string|module:svgcanvas.PaintOptions|Float|module:jGraduate~Paint} The current fill/stroke option\n*/\nthis.getColor = function (type) {\n  return curProperties[type];\n};\n\n/**\n* Change the current stroke/fill color/gradient value.\n* @function module:svgcanvas.SvgCanvas#setColor\n* @param {string} type - String indicating fill or stroke\n* @param {string} val - The value to set the stroke attribute to\n* @param {boolean} preventUndo - Boolean indicating whether or not this should be an undoable option\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setColor = function (type, val, preventUndo) {\n  curShape[type] = val;\n  curProperties[type + '_paint'] = {type: 'solidColor'};\n  const elems = [];\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else {\n        if (type === 'fill') {\n          if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {\n            elems.push(elem);\n          }\n        } else {\n          elems.push(elem);\n        }\n      }\n    }\n  }\n  if (elems.length > 0) {\n    if (!preventUndo) {\n      changeSelectedAttribute(type, val, elems);\n      call('changed', elems);\n    } else {\n      changeSelectedAttributeNoUndo(type, val, elems);\n    }\n  }\n};\n\n/**\n* Apply the current gradient to selected element's fill or stroke.\n* @function module:svgcanvas.SvgCanvas#setGradient\n* @param {\"fill\"|\"stroke\"} type - String indicating \"fill\" or \"stroke\" to apply to an element\n* @returns {undefined}\n*/\nconst setGradient = this.setGradient = function (type) {\n  if (!curProperties[type + '_paint'] || curProperties[type + '_paint'].type === 'solidColor') { return; }\n  let grad = canvas[type + 'Grad'];\n  // find out if there is a duplicate gradient already in the defs\n  const duplicateGrad = findDuplicateGradient(grad);\n  const defs = findDefs();\n  // no duplicate found, so import gradient into defs\n  if (!duplicateGrad) {\n    // const origGrad = grad;\n    grad = defs.appendChild(svgdoc.importNode(grad, true));\n    // get next id and set it on the grad\n    grad.id = getNextId();\n  } else { // use existing gradient\n    grad = duplicateGrad;\n  }\n  canvas.setColor(type, 'url(#' + grad.id + ')');\n};\n\n/**\n* Check if exact gradient already exists.\n* @function module:svgcanvas~findDuplicateGradient\n* @param {SVGGradientElement} grad - The gradient DOM element to compare to others\n* @returns {SVGGradientElement} The existing gradient if found, `null` if not\n*/\nconst findDuplicateGradient = function (grad) {\n  const defs = findDefs();\n  const existingGrads = $(defs).find('linearGradient, radialGradient');\n  let i = existingGrads.length;\n  const radAttrs = ['r', 'cx', 'cy', 'fx', 'fy'];\n  while (i--) {\n    const og = existingGrads[i];\n    if (grad.tagName === 'linearGradient') {\n      if (grad.getAttribute('x1') !== og.getAttribute('x1') ||\n        grad.getAttribute('y1') !== og.getAttribute('y1') ||\n        grad.getAttribute('x2') !== og.getAttribute('x2') ||\n        grad.getAttribute('y2') !== og.getAttribute('y2')\n      ) {\n        continue;\n      }\n    } else {\n      const gradAttrs = $(grad).attr(radAttrs);\n      const ogAttrs = $(og).attr(radAttrs);\n\n      let diff = false;\n      $.each(radAttrs, function (i, attr) {\n        if (gradAttrs[attr] !== ogAttrs[attr]) { diff = true; }\n      });\n\n      if (diff) { continue; }\n    }\n\n    // else could be a duplicate, iterate through stops\n    const stops = grad.getElementsByTagNameNS(NS.SVG, 'stop');\n    const ostops = og.getElementsByTagNameNS(NS.SVG, 'stop');\n\n    if (stops.length !== ostops.length) {\n      continue;\n    }\n\n    let j = stops.length;\n    while (j--) {\n      const stop = stops[j];\n      const ostop = ostops[j];\n\n      if (stop.getAttribute('offset') !== ostop.getAttribute('offset') ||\n        stop.getAttribute('stop-opacity') !== ostop.getAttribute('stop-opacity') ||\n        stop.getAttribute('stop-color') !== ostop.getAttribute('stop-color')) {\n        break;\n      }\n    }\n\n    if (j === -1) {\n      return og;\n    }\n  } // for each gradient in defs\n\n  return null;\n};\n\n/**\n* Set a color/gradient to a fill/stroke.\n* @function module:svgcanvas.SvgCanvas#setPaint\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @param {module:jGraduate.jGraduatePaintOptions} paint - The jGraduate paint object to apply\n* @returns {undefined}\n*/\nthis.setPaint = function (type, paint) {\n  // make a copy\n  const p = new $.jGraduate.Paint(paint);\n  this.setPaintOpacity(type, p.alpha / 100, true);\n\n  // now set the current paint object\n  curProperties[type + '_paint'] = p;\n  switch (p.type) {\n  case 'solidColor':\n    this.setColor(type, p.solidColor !== 'none' ? '#' + p.solidColor : 'none');\n    break;\n  case 'linearGradient':\n  case 'radialGradient':\n    canvas[type + 'Grad'] = p[p.type];\n    setGradient(type);\n    break;\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setStrokePaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setStrokePaint = function (paint) {\n  this.setPaint('stroke', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setFillPaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setFillPaint = function (paint) {\n  this.setPaint('fill', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeWidth\n* @returns {Float|string} The current stroke-width value\n*/\nthis.getStrokeWidth = function () {\n  return curProperties.stroke_width;\n};\n\n/**\n* Sets the stroke width for the current selected elements.\n* When attempting to set a line's width to 0, this changes it to 1 instead.\n* @function module:svgcanvas.SvgCanvas#setStrokeWidth\n* @param {Float} val - A Float indicating the new stroke width value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeWidth = function (val) {\n  if (val === 0 && ['line', 'path'].includes(currentMode)) {\n    canvas.setStrokeWidth(1);\n    return;\n  }\n  curProperties.stroke_width = val;\n\n  const elems = [];\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute('stroke-width', val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* Set the given stroke-related attribute the given value for selected elements.\n* @function module:svgcanvas.SvgCanvas#setStrokeAttr\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the attribute value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeAttr = function (attr, val) {\n  curShape[attr.replace('-', '_')] = val;\n  const elems = [];\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, function (e) { if (e.nodeName !== 'g') { elems.push(e); } });\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute(attr, val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.StyleOptions\n* @property {string} fill\n* @property {Float} fill_opacity\n* @property {string} stroke\n* @property {Float} stroke_width\n* @property {string} stroke_dasharray\n* @property {string} stroke_linejoin\n* @property {string} stroke_linecap\n* @property {Float} stroke_opacity\n* @property {Float} opacity\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStyle\n* @returns {module:svgcanvas.StyleOptions} current style options\n*/\nthis.getStyle = function () {\n  return curShape;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOpacity\n* @returns {Float} the current opacity\n*/\nthis.getOpacity = getOpacity;\n\n/**\n* Sets the given opacity on the current selected elements.\n* @function module:svgcanvas.SvgCanvas#setOpacity\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setOpacity = function (val) {\n  curShape.opacity = val;\n  changeSelectedAttribute('opacity', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFillOpacity\n* @returns {Float} the current fill opacity\n*/\nthis.getFillOpacity = function () {\n  return curShape.fill_opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeOpacity\n* @returns {string} the current stroke opacity\n*/\nthis.getStrokeOpacity = function () {\n  return curShape.stroke_opacity;\n};\n\n/**\n* Sets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#setPaintOpacity\n* @param {string} type - String with \"fill\" or \"stroke\"\n* @param {Float} val - Float with the new opacity value\n* @param {boolean} preventUndo - Indicates whether or not this should be an undoable action\n* @returns {undefined}\n*/\nthis.setPaintOpacity = function (type, val, preventUndo) {\n  curShape[type + '_opacity'] = val;\n  if (!preventUndo) {\n    changeSelectedAttribute(type + '-opacity', val);\n  } else {\n    changeSelectedAttributeNoUndo(type + '-opacity', val);\n  }\n};\n\n/**\n* Gets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#getPaintOpacity\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @returns {Float} Fill/stroke opacity\n*/\nthis.getPaintOpacity = function (type) {\n  return type === 'fill' ? this.getFillOpacity() : this.getStrokeOpacity();\n};\n\n/**\n* Gets the `stdDeviation` blur value of the given element.\n* @function module:svgcanvas.SvgCanvas#getBlur\n* @param {Element} elem - The element to check the blur value for\n* @returns {string} stdDeviation blur attribute value\n*/\nthis.getBlur = function (elem) {\n  let val = 0;\n  // const elem = selectedElements[0];\n\n  if (elem) {\n    const filterUrl = elem.getAttribute('filter');\n    if (filterUrl) {\n      const blur = getElem(elem.id + '_blur');\n      if (blur) {\n        val = blur.firstChild.getAttribute('stdDeviation');\n      }\n    }\n  }\n  return val;\n};\n\n(function () {\nlet curCommand = null;\nlet filter = null;\nlet filterHidden = false;\n\n/**\n* Sets the `stdDeviation` blur value on the selected element without being undoable.\n* @function module:svgcanvas.SvgCanvas#setBlurNoUndo\n* @param {Float} val - The new `stdDeviation` value\n* @returns {undefined}\n*/\ncanvas.setBlurNoUndo = function (val) {\n  if (!filter) {\n    canvas.setBlur(val);\n    return;\n  }\n  if (val === 0) {\n    // Don't change the StdDev, as that will hide the element.\n    // Instead, just remove the value for \"filter\"\n    changeSelectedAttributeNoUndo('filter', '');\n    filterHidden = true;\n  } else {\n    const elem = selectedElements[0];\n    if (filterHidden) {\n      changeSelectedAttributeNoUndo('filter', 'url(#' + elem.id + '_blur)');\n    }\n    if (isWebkit()) {\n      console.log('e', elem);\n      elem.removeAttribute('filter');\n      elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');\n    }\n    changeSelectedAttributeNoUndo('stdDeviation', val, [filter.firstChild]);\n    canvas.setBlurOffsets(filter, val);\n  }\n};\n\nfunction finishChange () {\n  const bCmd = canvas.undoMgr.finishUndoableChange();\n  curCommand.addSubCommand(bCmd);\n  addCommandToHistory(curCommand);\n  curCommand = null;\n  filter = null;\n}\n\n/**\n* Sets the `x`, `y`, `width`, `height` values of the filter element in order to\n* make the blur not be clipped. Removes them if not neeeded.\n* @function module:svgcanvas.SvgCanvas#setBlurOffsets\n* @param {Element} filter - The filter DOM element to update\n* @param {Float} stdDev - The standard deviation value on which to base the offset size\n* @returns {undefined}\n*/\ncanvas.setBlurOffsets = function (filter, stdDev) {\n  if (stdDev > 3) {\n    // TODO: Create algorithm here where size is based on expected blur\n    assignAttributes(filter, {\n      x: '-50%',\n      y: '-50%',\n      width: '200%',\n      height: '200%'\n    }, 100);\n  } else {\n    // Removing these attributes hides text in Chrome (see Issue 579)\n    if (!isWebkit()) {\n      filter.removeAttribute('x');\n      filter.removeAttribute('y');\n      filter.removeAttribute('width');\n      filter.removeAttribute('height');\n    }\n  }\n};\n\n/**\n* Adds/updates the blur filter to the selected element.\n* @function module:svgcanvas.SvgCanvas#setBlur\n* @param {Float} val - Float with the new `stdDeviation` blur value\n* @param {boolean} complete - Whether or not the action should be completed (to add to the undo manager)\n* @returns {undefined}\n*/\ncanvas.setBlur = function (val, complete) {\n  if (curCommand) {\n    finishChange();\n    return;\n  }\n\n  // Looks for associated blur, creates one if not found\n  const elem = selectedElements[0];\n  const elemId = elem.id;\n  filter = getElem(elemId + '_blur');\n\n  val -= 0;\n\n  const batchCmd = new BatchCommand();\n\n  // Blur found!\n  if (filter) {\n    if (val === 0) {\n      filter = null;\n    }\n  } else {\n    // Not found, so create\n    const newblur = addSVGElementFromJson({element: 'feGaussianBlur',\n      attr: {\n        in: 'SourceGraphic',\n        stdDeviation: val\n      }\n    });\n\n    filter = addSVGElementFromJson({element: 'filter',\n      attr: {\n        id: elemId + '_blur'\n      }\n    });\n\n    filter.append(newblur);\n    findDefs().append(filter);\n\n    batchCmd.addSubCommand(new InsertElementCommand(filter));\n  }\n\n  const changes = {filter: elem.getAttribute('filter')};\n\n  if (val === 0) {\n    elem.removeAttribute('filter');\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    return;\n  }\n\n  changeSelectedAttribute('filter', 'url(#' + elemId + '_blur)');\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n  canvas.setBlurOffsets(filter, val);\n\n  curCommand = batchCmd;\n  canvas.undoMgr.beginUndoableChange('stdDeviation', [filter ? filter.firstChild : null]);\n  if (complete) {\n    canvas.setBlurNoUndo(val);\n    finishChange();\n  }\n};\n}());\n\n/**\n* Check whether selected element is bold or not.\n* @function module:svgcanvas.SvgCanvas#getBold\n* @returns {boolean} Indicates whether or not element is bold\n*/\nthis.getBold = function () {\n  // should only have one element selected\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    return (selected.getAttribute('font-weight') === 'bold');\n  }\n  return false;\n};\n\n/**\n* Make the selected element bold or normal.\n* @function module:svgcanvas.SvgCanvas#setBold\n* @param {boolean} b - Indicates bold (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setBold = function (b) {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Check whether selected element is in italics or not.\n* @function module:svgcanvas.SvgCanvas#getItalic\n* @returns {boolean} Indicates whether or not element is italic\n*/\nthis.getItalic = function () {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    return (selected.getAttribute('font-style') === 'italic');\n  }\n  return false;\n};\n\n/**\n* Make the selected element italic or normal.\n* @function module:svgcanvas.SvgCanvas#setItalic\n* @param {boolean} i - Indicates italic (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setItalic = function (i) {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    changeSelectedAttribute('font-style', i ? 'italic' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontFamily\n* @returns {string} The current font family\n*/\nthis.getFontFamily = function () {\n  return curText.font_family;\n};\n\n/**\n* Set the new font family.\n* @function module:svgcanvas.SvgCanvas#setFontFamily\n* @param {string} val - String with the new font family\n* @returns {undefined}\n*/\nthis.setFontFamily = function (val) {\n  curText.font_family = val;\n  changeSelectedAttribute('font-family', val);\n  if (selectedElements[0] && !selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Set the new font color.\n* @function module:svgcanvas.SvgCanvas#setFontColor\n* @param {string} val - String with the new font color\n* @returns {undefined}\n*/\nthis.setFontColor = function (val) {\n  curText.fill = val;\n  changeSelectedAttribute('fill', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontColor\n* @returns {string} The current font color\n*/\nthis.getFontColor = function () {\n  return curText.fill;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontSize\n* @returns {Float} The current font size\n*/\nthis.getFontSize = function () {\n  return curText.font_size;\n};\n\n/**\n* Applies the given font size to the selected element.\n* @function module:svgcanvas.SvgCanvas#setFontSize\n* @param {Float} val - Float with the new font size\n* @returns {undefined}\n*/\nthis.setFontSize = function (val) {\n  curText.font_size = val;\n  changeSelectedAttribute('font-size', val);\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getText\n* @returns {string} The current text (`textContent`) of the selected element\n*/\nthis.getText = function () {\n  const selected = selectedElements[0];\n  if (selected == null) { return ''; }\n  return selected.textContent;\n};\n\n/**\n* Updates the text element with the given string.\n* @function module:svgcanvas.SvgCanvas#setTextContent\n* @param {string} val - String with the new text\n* @returns {undefined}\n*/\nthis.setTextContent = function (val) {\n  changeSelectedAttribute('#text', val);\n  textActions.init(val);\n  textActions.setCursor();\n};\n\n/**\n* Sets the new image URL for the selected image element. Updates its size if\n* a new URL is given.\n* @function module:svgcanvas.SvgCanvas#setImageURL\n* @param {string} val - String with the image URL/path\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setImageURL = function (val) {\n  const elem = selectedElements[0];\n  if (!elem) { return; }\n\n  const attrs = $(elem).attr(['width', 'height']);\n  const setsize = (!attrs.width || !attrs.height);\n\n  const curHref = getHref(elem);\n\n  // Do nothing if no URL change or size change\n  if (curHref === val && !setsize) {\n    return;\n  }\n\n  const batchCmd = new BatchCommand('Change Image URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  $(new Image()).load(function () {\n    const changes = $(elem).attr(['width', 'height']);\n\n    $(elem).attr({\n      width: this.width,\n      height: this.height\n    });\n\n    selectorManager.requestSelector(elem).resize();\n\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    addCommandToHistory(batchCmd);\n    call('changed', [elem]);\n  }).attr('src', val);\n};\n\n/**\n* Sets the new link URL for the selected anchor element.\n* @function module:svgcanvas.SvgCanvas#setLinkURL\n* @param {string} val - String with the link URL/path\n* @returns {undefined}\n*/\nthis.setLinkURL = function (val) {\n  let elem = selectedElements[0];\n  if (!elem) { return; }\n  if (elem.tagName !== 'a') {\n    // See if parent is an anchor\n    const parentsA = $(elem).parents('a');\n    if (parentsA.length) {\n      elem = parentsA[0];\n    } else {\n      return;\n    }\n  }\n\n  const curHref = getHref(elem);\n\n  if (curHref === val) { return; }\n\n  const batchCmd = new BatchCommand('Change Link URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Sets the `rx` and `ry` values to the selected `rect` element\n* to change its corner radius.\n* @function module:svgcanvas.SvgCanvas#setRectRadius\n* @param {string|Float} val - The new radius\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRectRadius = function (val) {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'rect') {\n    const r = selected.getAttribute('rx');\n    if (r !== String(val)) {\n      selected.setAttribute('rx', val);\n      selected.setAttribute('ry', val);\n      addCommandToHistory(new ChangeElementCommand(selected, {rx: r, ry: r}, 'Radius'));\n      call('changed', [selected]);\n    }\n  }\n};\n\n/**\n* Wraps the selected element(s) in an anchor element or converts group to one.\n* @function module:svgcanvas.SvgCanvas#makeHyperlink\n* @param {string} url\n* @returns {undefined}\n*/\nthis.makeHyperlink = function (url) {\n  canvas.groupSelectedElements('a', url);\n\n  // TODO: If element is a single \"g\", convert to \"a\"\n  //  if (selectedElements.length > 1 && selectedElements[1]) {\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#removeHyperlink\n* @returns {undefined}\n*/\nthis.removeHyperlink = function () {\n  canvas.ungroupSelectedElement();\n};\n\n/**\n* Group: Element manipulation\n*/\n\n/**\n* Sets the new segment type to the selected segment(s).\n* @function module:svgcanvas.SvgCanvas#setSegType\n* @param {Integer} newType - New segment type. See {@link https://www.w3.org/TR/SVG/paths.html#InterfaceSVGPathSeg} for list\n* @returns {undefined}\n*/\nthis.setSegType = function (newType) {\n  pathActions.setSegType(newType);\n};\n\n/**\n* Convert selected element to a path, or get the BBox of an element-as-path.\n* @function module:svgcanvas.SvgCanvas#convertToPath\n* @todo (codedread): Remove the getBBox argument and split this function into two.\n* @param {Element} elem - The DOM element to be converted\n* @param {boolean} getBBox - Boolean on whether or not to only return the path's BBox\n* @returns {undefined|DOMRect|false|SVGPathElement|null} If the getBBox flag is true, the resulting path's bounding box object.\n* Otherwise the resulting path element is returned.\n*/\nthis.convertToPath = function (elem, getBBox) {\n  if (elem == null) {\n    const elems = selectedElements;\n    $.each(elems, function (i, elem) {\n      if (elem) { canvas.convertToPath(elem); }\n    });\n    return;\n  }\n  if (getBBox) {\n    return getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n  }\n  // TODO: Why is this applying attributes from curShape, then inside utilities.convertToPath it's pulling addition attributes from elem?\n  // TODO: If convertToPath is called with one elem, curShape and elem are probably the same; but calling with multiple is a bug or cool feature.\n  const attrs = {\n    fill: curShape.fill,\n    'fill-opacity': curShape.fill_opacity,\n    stroke: curShape.stroke,\n    'stroke-width': curShape.stroke_width,\n    'stroke-dasharray': curShape.stroke_dasharray,\n    'stroke-linejoin': curShape.stroke_linejoin,\n    'stroke-linecap': curShape.stroke_linecap,\n    'stroke-opacity': curShape.stroke_opacity,\n    opacity: curShape.opacity,\n    visibility: 'hidden'\n  };\n  return convertToPath(elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, history, addCommandToHistory);\n};\n\n/**\n* This function makes the changes to the elements. It does not add the change\n* to the history stack.\n* @param {string} attr - Attribute name\n* @param {string|Float} newValue - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttributeNoUndo = function (attr, newValue, elems) {\n  if (currentMode === 'pathedit') {\n    // Editing node\n    pathActions.moveNode(attr, newValue);\n  }\n  elems = elems || selectedElements;\n  let i = elems.length;\n  const noXYElems = ['g', 'polyline', 'path'];\n  const goodGAttrs = ['transform', 'opacity', 'filter'];\n\n  while (i--) {\n    let elem = elems[i];\n    if (elem == null) { continue; }\n\n    // Set x,y vals on elements that don't have them\n    if ((attr === 'x' || attr === 'y') && noXYElems.includes(elem.tagName)) {\n      const bbox = getStrokedBBoxDefaultVisible([elem]);\n      const diffX = attr === 'x' ? newValue - bbox.x : 0;\n      const diffY = attr === 'y' ? newValue - bbox.y : 0;\n      canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);\n      continue;\n    }\n\n    // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky\n    // TODO: FIXME: This doesn't seem right. Where's the body of this if statement?\n    if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}\n    let oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);\n    if (oldval == null) { oldval = ''; }\n    if (oldval !== String(newValue)) {\n      if (attr === '#text') {\n        // const oldW = utilsGetBBox(elem).width;\n        elem.textContent = newValue;\n\n        // FF bug occurs on on rotated elements\n        if ((/rotate/).test(elem.getAttribute('transform'))) {\n          elem = ffClone(elem);\n        }\n        // Hoped to solve the issue of moving text with text-anchor=\"start\",\n        // but this doesn't actually fix it. Hopefully on the right track, though. -Fyrd\n        // const box = getBBox(elem), left = box.x, top = box.y, {width, height} = box,\n        //   dx = width - oldW, dy = 0;\n        // const angle = getRotationAngle(elem, true);\n        // if (angle) {\n        //   const r = Math.sqrt(dx * dx + dy * dy);\n        //   const theta = Math.atan2(dy, dx) - angle;\n        //   dx = r * Math.cos(theta);\n        //   dy = r * Math.sin(theta);\n        //\n        //   elem.setAttribute('x', elem.getAttribute('x') - dx);\n        //   elem.setAttribute('y', elem.getAttribute('y') - dy);\n        // }\n      } else if (attr === '#href') {\n        setHref(elem, newValue);\n      } else { elem.setAttribute(attr, newValue); }\n\n      // Go into \"select\" mode for text changes\n      // NOTE: Important that this happens AFTER elem.setAttribute() or else attributes like\n      // font-size can get reset to their old value, ultimately by svgEditor.updateContextPanel(),\n      // after calling textActions.toSelectMode() below\n      if (currentMode === 'textedit' && attr !== '#text' && elem.textContent.length) {\n        textActions.toSelectMode(elem);\n      }\n\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(elem);\n      // }\n\n      // Use the Firefox ffClone hack for text elements with gradients or\n      // where other text attributes are changed.\n      if (isGecko() && elem.nodeName === 'text' && (/rotate/).test(elem.getAttribute('transform'))) {\n        if (String(newValue).startsWith('url') || (['font-size', 'font-family', 'x', 'y'].includes(attr) && elem.textContent)) {\n          elem = ffClone(elem);\n        }\n      }\n      // Timeout needed for Opera & Firefox\n      // codedread: it is now possible for this function to be called with elements\n      // that are not in the selectedElements array, we need to only request a\n      // selector if the element is in that array\n      if (selectedElements.includes(elem)) {\n        setTimeout(function () {\n          // Due to element replacement, this element may no longer\n          // be part of the DOM\n          if (!elem.parentNode) { return; }\n          selectorManager.requestSelector(elem).resize();\n        }, 0);\n      }\n      // if this element was rotated, and we changed the position of this element\n      // we need to update the rotational transform attribute\n      const angle = getRotationAngle(elem);\n      if (angle !== 0 && attr !== 'transform') {\n        const tlist = getTransformList(elem);\n        let n = tlist.numberOfItems;\n        while (n--) {\n          const xform = tlist.getItem(n);\n          if (xform.type === 4) {\n            // remove old rotate\n            tlist.removeItem(n);\n\n            const box = utilsGetBBox(elem);\n            const center = transformPoint(box.x + box.width / 2, box.y + box.height / 2, transformListToTransform(tlist).matrix);\n            const cx = center.x,\n              cy = center.y;\n            const newrot = svgroot.createSVGTransform();\n            newrot.setRotate(angle, cx, cy);\n            tlist.insertItemBefore(newrot, n);\n            break;\n          }\n        }\n      }\n    } // if oldValue != newValue\n  } // for each elem\n};\n\n/**\n* Change the given/selected element and add the original value to the history stack.\n* If you want to change all `selectedElements`, ignore the `elems` argument.\n* If you want to change only a subset of `selectedElements`, then send the\n* subset to this function in the `elems` argument.\n* @function module:svgcanvas.SvgCanvas#changeSelectedAttribute\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttribute = this.changeSelectedAttribute = function (attr, val, elems) {\n  elems = elems || selectedElements;\n  canvas.undoMgr.beginUndoableChange(attr, elems);\n  // const i = elems.length;\n\n  changeSelectedAttributeNoUndo(attr, val, elems);\n\n  const batchCmd = canvas.undoMgr.finishUndoableChange();\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack.\n* @function module:svgcanvas.SvgCanvas#deleteSelectedElements\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.deleteSelectedElements = function () {\n  const batchCmd = new BatchCommand('Delete Elements');\n  const len = selectedElements.length;\n  const selectedCopy = []; // selectedElements is being deleted\n\n  for (let i = 0; i < len; ++i) {\n    const selected = selectedElements[i];\n    if (selected == null) { break; }\n\n    let parent = selected.parentNode;\n    let t = selected;\n\n    // this will unselect the element and remove the selectedOutline\n    selectorManager.releaseSelector(t);\n\n    // Remove the path if present.\n    pathModule.removePath_(t.id);\n\n    // Get the parent if it's a single-child anchor\n    if (parent.tagName === 'a' && parent.childNodes.length === 1) {\n      t = parent;\n      parent = parent.parentNode;\n    }\n\n    const {nextSibling} = t;\n    const elem = parent.removeChild(t);\n    selectedCopy.push(selected); // for the copy\n    batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n  }\n  selectedElements = [];\n\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n  call('changed', selectedCopy);\n  clearSelection();\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack. Remembers removed elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#cutSelectedElements\n* @returns {undefined}\n*/\nthis.cutSelectedElements = function () {\n  canvas.copySelectedElements();\n  canvas.deleteSelectedElements();\n};\n\n/**\n* Remembers the current selected elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#copySelectedElements\n* @returns {undefined}\n*/\nthis.copySelectedElements = function () {\n  localStorage.setItem('svgedit_clipboard', JSON.stringify(\n    selectedElements.map(function (x) { return getJsonFromSvgElement(x); })\n  ));\n\n  $('#cmenu_canvas').enableContextMenuItems('#paste,#paste_in_place');\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#pasteElements\n* @param {\"in_place\"|\"point\"|undefined} type\n* @param {Integer|undefined} x Expected if type is \"point\"\n* @param {Integer|undefined} y Expected if type is \"point\"\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @fires module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n* @returns {undefined}\n*/\nthis.pasteElements = function (type, x, y) {\n  let clipb = JSON.parse(localStorage.getItem('svgedit_clipboard'));\n  let len = clipb.length;\n  if (!len) { return; }\n\n  const pasted = [];\n  const batchCmd = new BatchCommand('Paste elements');\n  // const drawing = getCurrentDrawing();\n  /**\n  * @typedef {PlainObject.<string, string>} module:svgcanvas.ChangedIDs\n  */\n  /**\n   * @type {module:svgcanvas.ChangedIDs}\n   */\n  const changedIDs = {};\n\n  // Recursively replace IDs and record the changes\n  function checkIDs (elem) {\n    if (elem.attr && elem.attr.id) {\n      changedIDs[elem.attr.id] = getNextId();\n      elem.attr.id = changedIDs[elem.attr.id];\n    }\n    if (elem.children) elem.children.forEach(checkIDs);\n  }\n  clipb.forEach(checkIDs);\n\n  // Give extensions like the connector extension a chance to reflect new IDs and remove invalid elements\n  /**\n  * Triggered when `pasteElements` is called from a paste action (context menu or key)\n  * @event module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n  * @type {PlainObject}\n  * @property {module:svgcanvas.SVGAsJSON[]} elems\n  * @property {module:svgcanvas.ChangedIDs} changes Maps past ID (on attribute) to current ID\n  */\n  runExtensions(\n    'IDsUpdated',\n    /** @type {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} */\n    {elems: clipb, changes: changedIDs},\n    true\n  ).forEach(function (extChanges) {\n    if (!extChanges || !('remove' in extChanges)) return;\n\n    extChanges.remove.forEach(function (removeID) {\n      clipb = clipb.filter(function (clipBoardItem) {\n        return clipBoardItem.attr.id !== removeID;\n      });\n    });\n  });\n\n  // Move elements to lastClickPoint\n  while (len--) {\n    const elem = clipb[len];\n    if (!elem) { continue; }\n\n    const copy = addSVGElementFromJson(elem);\n    pasted.push(copy);\n    batchCmd.addSubCommand(new InsertElementCommand(copy));\n\n    restoreRefElems(copy);\n  }\n\n  selectOnly(pasted);\n\n  if (type !== 'in_place') {\n    let ctrX, ctrY;\n\n    if (!type) {\n      ctrX = lastClickPoint.x;\n      ctrY = lastClickPoint.y;\n    } else if (type === 'point') {\n      ctrX = x;\n      ctrY = y;\n    }\n\n    const bbox = getStrokedBBoxDefaultVisible(pasted);\n    const cx = ctrX - (bbox.x + bbox.width / 2),\n      cy = ctrY - (bbox.y + bbox.height / 2),\n      dx = [],\n      dy = [];\n\n    $.each(pasted, function (i, item) {\n      dx.push(cx);\n      dy.push(cy);\n    });\n\n    const cmd = canvas.moveSelectedElements(dx, dy, false);\n    if (cmd) batchCmd.addSubCommand(cmd);\n  }\n\n  addCommandToHistory(batchCmd);\n  call('changed', pasted);\n};\n\n/**\n* Wraps all the selected elements in a group (`g`) element.\n* @function module:svgcanvas.SvgCanvas#groupSelectedElements\n* @param {\"a\"|\"g\"} [type=\"g\"] - type of element to group into, defaults to `<g>`\n* @param {string} [urlArg]\n* @returns {undefined}\n*/\nthis.groupSelectedElements = function (type, urlArg) {\n  if (!type) { type = 'g'; }\n  let cmdStr = '';\n  let url;\n\n  switch (type) {\n  case 'a': {\n    cmdStr = 'Make hyperlink';\n    url = urlArg || '';\n    break;\n  } default: {\n    type = 'g';\n    cmdStr = 'Group Elements';\n    break;\n  }\n  }\n\n  const batchCmd = new BatchCommand(cmdStr);\n\n  // create and insert the group element\n  const g = addSVGElementFromJson({\n    element: type,\n    attr: {\n      id: getNextId()\n    }\n  });\n  if (type === 'a') {\n    setHref(g, url);\n  }\n  batchCmd.addSubCommand(new InsertElementCommand(g));\n\n  // now move all children into the group\n  let i = selectedElements.length;\n  while (i--) {\n    let elem = selectedElements[i];\n    if (elem == null) { continue; }\n\n    if (elem.parentNode.tagName === 'a' && elem.parentNode.childNodes.length === 1) {\n      elem = elem.parentNode;\n    }\n\n    const oldNextSibling = elem.nextSibling;\n    const oldParent = elem.parentNode;\n    g.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n  }\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n  // update selection\n  selectOnly([g], true);\n};\n\n/**\n* Pushes all appropriate parent group properties down to its children, then\n* removes them from the group.\n* @function module:svgcanvas.SvgCanvas#pushGroupProperties\n* @param {SVGAElement|SVGGElement} g\n* @param {boolean} undoable\n* @returns {undefined}\n*/\nconst pushGroupProperties = this.pushGroupProperties = function (g, undoable) {\n  const children = g.childNodes;\n  const len = children.length;\n  const xform = g.getAttribute('transform');\n\n  const glist = getTransformList(g);\n  const m = transformListToTransform(glist).matrix;\n\n  const batchCmd = new BatchCommand('Push group properties');\n\n  // TODO: get all fill/stroke properties from the group that we are about to destroy\n  // \"fill\", \"fill-opacity\", \"fill-rule\", \"stroke\", \"stroke-dasharray\", \"stroke-dashoffset\",\n  // \"stroke-linecap\", \"stroke-linejoin\", \"stroke-miterlimit\", \"stroke-opacity\",\n  // \"stroke-width\"\n  // and then for each child, if they do not have the attribute (or the value is 'inherit')\n  // then set the child's attribute\n\n  const gangle = getRotationAngle(g);\n\n  const gattrs = $(g).attr(['filter', 'opacity']);\n  let gfilter, gblur, changes;\n  const drawing = getCurrentDrawing();\n\n  for (let i = 0; i < len; i++) {\n    const elem = children[i];\n\n    if (elem.nodeType !== 1) { continue; }\n\n    if (gattrs.opacity !== null && gattrs.opacity !== 1) {\n      // const c_opac = elem.getAttribute('opacity') || 1;\n      const newOpac = Math.round((elem.getAttribute('opacity') || 1) * gattrs.opacity * 100) / 100;\n      changeSelectedAttribute('opacity', newOpac, [elem]);\n    }\n\n    if (gattrs.filter) {\n      let cblur = this.getBlur(elem);\n      const origCblur = cblur;\n      if (!gblur) { gblur = this.getBlur(g); }\n      if (cblur) {\n        // Is this formula correct?\n        cblur = Number(gblur) + Number(cblur);\n      } else if (cblur === 0) {\n        cblur = gblur;\n      }\n\n      // If child has no current filter, get group's filter or clone it.\n      if (!origCblur) {\n        // Set group's filter to use first child's ID\n        if (!gfilter) {\n          gfilter = getRefElem(gattrs.filter);\n        } else {\n          // Clone the group's filter\n          gfilter = drawing.copyElem(gfilter);\n          findDefs().append(gfilter);\n        }\n      } else {\n        gfilter = getRefElem(elem.getAttribute('filter'));\n      }\n\n      // Change this in future for different filters\n      const suffix = (gfilter.firstChild.tagName === 'feGaussianBlur') ? 'blur' : 'filter';\n      gfilter.id = elem.id + '_' + suffix;\n      changeSelectedAttribute('filter', 'url(#' + gfilter.id + ')', [elem]);\n\n      // Update blur value\n      if (cblur) {\n        changeSelectedAttribute('stdDeviation', cblur, [gfilter.firstChild]);\n        canvas.setBlurOffsets(gfilter, cblur);\n      }\n    }\n\n    let chtlist = getTransformList(elem);\n\n    // Don't process gradient transforms\n    if (elem.tagName.includes('Gradient')) { chtlist = null; }\n\n    // Hopefully not a problem to add this. Necessary for elements like <desc/>\n    if (!chtlist) { continue; }\n\n    // Apparently <defs> can get get a transformlist, but we don't want it to have one!\n    if (elem.tagName === 'defs') { continue; }\n\n    if (glist.numberOfItems) {\n      // TODO: if the group's transform is just a rotate, we can always transfer the\n      // rotate() down to the children (collapsing consecutive rotates and factoring\n      // out any translates)\n      if (gangle && glist.numberOfItems === 1) {\n        // [Rg] [Rc] [Mc]\n        // we want [Tr] [Rc2] [Mc] where:\n        //  - [Rc2] is at the child's current center but has the\n        // sum of the group and child's rotation angles\n        //  - [Tr] is the equivalent translation that this child\n        // undergoes if the group wasn't there\n\n        // [Tr] = [Rg] [Rc] [Rc2_inv]\n\n        // get group's rotation matrix (Rg)\n        const rgm = glist.getItem(0).matrix;\n\n        // get child's rotation matrix (Rc)\n        let rcm = svgroot.createSVGMatrix();\n        const cangle = getRotationAngle(elem);\n        if (cangle) {\n          rcm = chtlist.getItem(0).matrix;\n        }\n\n        // get child's old center of rotation\n        const cbox = utilsGetBBox(elem);\n        const ceqm = transformListToTransform(chtlist).matrix;\n        const coldc = transformPoint(cbox.x + cbox.width / 2, cbox.y + cbox.height / 2, ceqm);\n\n        // sum group and child's angles\n        const sangle = gangle + cangle;\n\n        // get child's rotation at the old center (Rc2_inv)\n        const r2 = svgroot.createSVGTransform();\n        r2.setRotate(sangle, coldc.x, coldc.y);\n\n        // calculate equivalent translate\n        const trm = matrixMultiply(rgm, rcm, r2.matrix.inverse());\n\n        // set up tlist\n        if (cangle) {\n          chtlist.removeItem(0);\n        }\n\n        if (sangle) {\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(r2, 0);\n          } else {\n            chtlist.appendItem(r2);\n          }\n        }\n\n        if (trm.e || trm.f) {\n          const tr = svgroot.createSVGTransform();\n          tr.setTranslate(trm.e, trm.f);\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(tr, 0);\n          } else {\n            chtlist.appendItem(tr);\n          }\n        }\n      } else { // more complicated than just a rotate\n        // transfer the group's transform down to each child and then\n        // call recalculateDimensions()\n        const oldxform = elem.getAttribute('transform');\n        changes = {};\n        changes.transform = oldxform || '';\n\n        const newxform = svgroot.createSVGTransform();\n\n        // [ gm ] [ chm ] = [ chm ] [ gm' ]\n        // [ gm' ] = [ chmInv ] [ gm ] [ chm ]\n        const chm = transformListToTransform(chtlist).matrix,\n          chmInv = chm.inverse();\n        const gm = matrixMultiply(chmInv, m, chm);\n        newxform.setMatrix(gm);\n        chtlist.appendItem(newxform);\n      }\n      const cmd = recalculateDimensions(elem);\n      if (cmd) { batchCmd.addSubCommand(cmd); }\n    }\n  }\n\n  // remove transform and make it undo-able\n  if (xform) {\n    changes = {};\n    changes.transform = xform;\n    g.setAttribute('transform', '');\n    g.removeAttribute('transform');\n    batchCmd.addSubCommand(new ChangeElementCommand(g, changes));\n  }\n\n  if (undoable && !batchCmd.isEmpty()) {\n    return batchCmd;\n  }\n};\n\n/**\n* Unwraps all the elements in a selected group (`g`) element. This requires\n* significant recalculations to apply group's transforms, etc. to its children.\n* @function module:svgcanvas.SvgCanvas#ungroupSelectedElement\n* @returns {undefined}\n*/\nthis.ungroupSelectedElement = function () {\n  let g = selectedElements[0];\n  if (!g) {\n    return;\n  }\n  if ($(g).data('gsvg') || $(g).data('symbol')) {\n    // Is svg, so actually convert to group\n    convertToGroup(g);\n    return;\n  }\n  if (g.tagName === 'use') {\n    // Somehow doesn't have data set, so retrieve\n    const symbol = getElem(getHref(g).substr(1));\n    $(g).data('symbol', symbol).data('ref', symbol);\n    convertToGroup(g);\n    return;\n  }\n  const parentsA = $(g).parents('a');\n  if (parentsA.length) {\n    g = parentsA[0];\n  }\n\n  // Look for parent \"a\"\n  if (g.tagName === 'g' || g.tagName === 'a') {\n    const batchCmd = new BatchCommand('Ungroup Elements');\n    const cmd = pushGroupProperties(g, true);\n    if (cmd) { batchCmd.addSubCommand(cmd); }\n\n    const parent = g.parentNode;\n    const anchor = g.nextSibling;\n    const children = new Array(g.childNodes.length);\n\n    let i = 0;\n    while (g.firstChild) {\n      let elem = g.firstChild;\n      const oldNextSibling = elem.nextSibling;\n      const oldParent = elem.parentNode;\n\n      // Remove child title elements\n      if (elem.tagName === 'title') {\n        const {nextSibling} = elem;\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, oldParent));\n        elem.remove();\n        continue;\n      }\n\n      children[i++] = elem = parent.insertBefore(elem, anchor);\n      batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n    }\n\n    // remove the group from the selection\n    clearSelection();\n\n    // delete the group element (but make undo-able)\n    const gNextSibling = g.nextSibling;\n    g = parent.removeChild(g);\n    batchCmd.addSubCommand(new RemoveElementCommand(g, gNextSibling, parent));\n\n    if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n    // update selection\n    addToSelection(children);\n  }\n};\n\n/**\n* Repositions the selected element to the bottom in the DOM to appear on top of\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToTopSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToTopSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (selected != null) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    t = t.parentNode.appendChild(t);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'top'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Repositions the selected element to the top in the DOM to appear under\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToBottomSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToBottomSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (selected != null) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    let {firstChild} = t.parentNode;\n    if (firstChild.tagName === 'title') {\n      firstChild = firstChild.nextSibling;\n    }\n    // This can probably be removed, as the defs should not ever apppear\n    // inside a layer group\n    if (firstChild.tagName === 'defs') {\n      firstChild = firstChild.nextSibling;\n    }\n    t = t.parentNode.insertBefore(t, firstChild);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'bottom'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Moves the select element up or down the stack, based on the visibly\n* intersecting elements.\n* @function module:svgcanvas.SvgCanvas#moveUpDownSelected\n* @param {\"Up\"|\"Down\"} dir - String that's either 'Up' or 'Down'\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveUpDownSelected = function (dir) {\n  const selected = selectedElements[0];\n  if (!selected) { return; }\n\n  curBBoxes = [];\n  let closest, foundCur;\n  // jQuery sorts this list\n  const list = $(getIntersectionList(getStrokedBBoxDefaultVisible([selected]))).toArray();\n  if (dir === 'Down') { list.reverse(); }\n\n  $.each(list, function () {\n    if (!foundCur) {\n      if (this === selected) {\n        foundCur = true;\n      }\n      return;\n    }\n    closest = this;\n    return false;\n  });\n  if (!closest) { return; }\n\n  const t = selected;\n  const oldParent = t.parentNode;\n  const oldNextSibling = t.nextSibling;\n  $(closest)[dir === 'Down' ? 'before' : 'after'](t);\n  // If the element actually moved position, add the command and fire the changed\n  // event handler.\n  if (oldNextSibling !== t.nextSibling) {\n    addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'Move ' + dir));\n    call('changed', [t]);\n  }\n};\n\n/**\n* Moves selected elements on the X/Y axis.\n* @function module:svgcanvas.SvgCanvas#moveSelectedElements\n* @param {Float} dx - Float with the distance to move on the x-axis\n* @param {Float} dy - Float with the distance to move on the y-axis\n* @param {boolean} undoable - Boolean indicating whether or not the action should be undoable\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {BatchCommand} Batch command for the move\n*/\nthis.moveSelectedElements = function (dx, dy, undoable) {\n  // if undoable is not sent, default to true\n  // if single values, scale them to the zoom\n  if (dx.constructor !== Array) {\n    dx /= currentZoom;\n    dy /= currentZoom;\n  }\n  undoable = undoable || true;\n  const batchCmd = new BatchCommand('position');\n  let i = selectedElements.length;\n  while (i--) {\n    const selected = selectedElements[i];\n    if (selected != null) {\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(selected);\n      // }\n      // const b = {};\n      // for (const j in selectedBBoxes[i]) b[j] = selectedBBoxes[i][j];\n      // selectedBBoxes[i] = b;\n\n      const xform = svgroot.createSVGTransform();\n      const tlist = getTransformList(selected);\n\n      // dx and dy could be arrays\n      if (dx.constructor === Array) {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx[0];\n        //   selectedBBoxes[0].y += dy[0];\n        // }\n        xform.setTranslate(dx[i], dy[i]);\n      } else {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx;\n        //   selectedBBoxes[0].y += dy;\n        // }\n        xform.setTranslate(dx, dy);\n      }\n\n      if (tlist.numberOfItems) {\n        tlist.insertItemBefore(xform, 0);\n      } else {\n        tlist.appendItem(xform);\n      }\n\n      const cmd = recalculateDimensions(selected);\n      if (cmd) {\n        batchCmd.addSubCommand(cmd);\n      }\n\n      selectorManager.requestSelector(selected).resize();\n    }\n  }\n  if (!batchCmd.isEmpty()) {\n    if (undoable) {\n      addCommandToHistory(batchCmd);\n    }\n    call('changed', selectedElements);\n    return batchCmd;\n  }\n};\n\n/**\n* Create deep DOM copies (clones) of all selected elements and move them slightly\n* from their originals.\n* @function module:svgcanvas.SvgCanvas#cloneSelectedElements\n* @param {Float} x Float with the distance to move on the x-axis\n* @param {Float} y Float with the distance to move on the y-axis\n* @returns {undefined}\n*/\nthis.cloneSelectedElements = function (x, y) {\n  let i, elem;\n  const batchCmd = new BatchCommand('Clone Elements');\n  // find all the elements selected (stop at first null)\n  const len = selectedElements.length;\n  function sortfunction (a, b) {\n    return ($(b).index() - $(a).index()); // causes an array to be sorted numerically and ascending\n  }\n  selectedElements.sort(sortfunction);\n  for (i = 0; i < len; ++i) {\n    elem = selectedElements[i];\n    if (elem == null) { break; }\n  }\n  // use slice to quickly get the subset of elements we need\n  const copiedElements = selectedElements.slice(0, i);\n  this.clearSelection(true);\n  // note that we loop in the reverse way because of the way elements are added\n  // to the selectedElements array (top-first)\n  const drawing = getCurrentDrawing();\n  i = copiedElements.length;\n  while (i--) {\n    // clone each element and replace it within copiedElements\n    elem = copiedElements[i] = drawing.copyElem(copiedElements[i]);\n    (currentGroup || drawing.getCurrentLayer()).append(elem);\n    batchCmd.addSubCommand(new InsertElementCommand(elem));\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addToSelection(copiedElements.reverse()); // Need to reverse for correct selection-adding\n    this.moveSelectedElements(x, y, false);\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Aligns selected elements.\n* @function module:svgcanvas.SvgCanvas#alignSelectedElements\n* @param {string} type - String with single character indicating the alignment type\n* @param {\"selected\"|\"largest\"|\"smallest\"|\"page\"} relativeTo\n* @returns {undefined}\n*/\nthis.alignSelectedElements = function (type, relativeTo) {\n  const bboxes = []; // angles = [];\n  const len = selectedElements.length;\n  if (!len) { return; }\n  let minx = Number.MAX_VALUE, maxx = Number.MIN_VALUE,\n    miny = Number.MAX_VALUE, maxy = Number.MIN_VALUE;\n  let curwidth = Number.MIN_VALUE, curheight = Number.MIN_VALUE;\n  for (let i = 0; i < len; ++i) {\n    if (selectedElements[i] == null) { break; }\n    const elem = selectedElements[i];\n    bboxes[i] = getStrokedBBoxDefaultVisible([elem]);\n\n    // now bbox is axis-aligned and handles rotation\n    switch (relativeTo) {\n    case 'smallest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth > bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight > bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    case 'largest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth < bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight < bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    default: // 'selected'\n      if (bboxes[i].x < minx) { minx = bboxes[i].x; }\n      if (bboxes[i].y < miny) { miny = bboxes[i].y; }\n      if (bboxes[i].x + bboxes[i].width > maxx) { maxx = bboxes[i].x + bboxes[i].width; }\n      if (bboxes[i].y + bboxes[i].height > maxy) { maxy = bboxes[i].y + bboxes[i].height; }\n      break;\n    }\n  } // loop for each element to find the bbox and adjust min/max\n\n  if (relativeTo === 'page') {\n    minx = 0;\n    miny = 0;\n    maxx = canvas.contentW;\n    maxy = canvas.contentH;\n  }\n\n  const dx = new Array(len);\n  const dy = new Array(len);\n  for (let i = 0; i < len; ++i) {\n    if (selectedElements[i] == null) { break; }\n    // const elem = selectedElements[i];\n    const bbox = bboxes[i];\n    dx[i] = 0;\n    dy[i] = 0;\n    switch (type) {\n    case 'l': // left (horizontal)\n      dx[i] = minx - bbox.x;\n      break;\n    case 'c': // center (horizontal)\n      dx[i] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);\n      break;\n    case 'r': // right (horizontal)\n      dx[i] = maxx - (bbox.x + bbox.width);\n      break;\n    case 't': // top (vertical)\n      dy[i] = miny - bbox.y;\n      break;\n    case 'm': // middle (vertical)\n      dy[i] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);\n      break;\n    case 'b': // bottom (vertical)\n      dy[i] = maxy - (bbox.y + bbox.height);\n      break;\n    }\n  }\n  this.moveSelectedElements(dx, dy);\n};\n\n/**\n* Group: Additional editor tools\n*/\n\n/**\n* @name module:svgcanvas.SvgCanvas#contentW\n* @type {Float}\n*/\nthis.contentW = getResolution().w;\n/**\n* @name module:svgcanvas.SvgCanvas#contentH\n* @type {Float}\n*/\nthis.contentH = getResolution().h;\n\n/**\n* @typedef {PlainObject} module:svgcanvas.CanvasInfo\n* @property {Float} x - The canvas' new x coordinate\n* @property {Float} y - The canvas' new y coordinate\n* @property {string} oldX - The canvas' old x coordinate\n* @property {string} oldY - The canvas' old y coordinate\n* @property {Float} d_x - The x position difference\n* @property {Float} d_y - The y position difference\n*/\n\n/**\n* Updates the editor canvas width/height/position after a zoom has occurred.\n* @function module:svgcanvas.SvgCanvas#updateCanvas\n* @param {Float} w - Float with the new width\n* @param {Float} h - Float with the new height\n* @fires module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n* @returns {module:svgcanvas.CanvasInfo}\n*/\nthis.updateCanvas = function (w, h) {\n  svgroot.setAttribute('width', w);\n  svgroot.setAttribute('height', h);\n  const bg = $('#canvasBackground')[0];\n  const oldX = svgcontent.getAttribute('x');\n  const oldY = svgcontent.getAttribute('y');\n  const x = ((w - this.contentW * currentZoom) / 2);\n  const y = ((h - this.contentH * currentZoom) / 2);\n\n  assignAttributes(svgcontent, {\n    width: this.contentW * currentZoom,\n    height: this.contentH * currentZoom,\n    x,\n    y,\n    viewBox: '0 0 ' + this.contentW + ' ' + this.contentH\n  });\n\n  assignAttributes(bg, {\n    width: svgcontent.getAttribute('width'),\n    height: svgcontent.getAttribute('height'),\n    x,\n    y\n  });\n\n  const bgImg = getElem('background_image');\n  if (bgImg) {\n    assignAttributes(bgImg, {\n      width: '100%',\n      height: '100%'\n    });\n  }\n\n  selectorManager.selectorParentGroup.setAttribute('transform', 'translate(' + x + ',' + y + ')');\n\n  /**\n  * Invoked upon updates to the canvas.\n  * @event module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n  * @type {PlainObject}\n  * @property {Integer} new_x\n  * @property {Integer} new_y\n  * @property {string} old_x (Of Integer)\n  * @property {string} old_y (Of Integer)\n  * @property {Integer} d_x\n  * @property {Integer} d_y\n  */\n  runExtensions(\n    'canvasUpdated',\n    /**\n     * @type {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated}\n     */\n    {new_x: x, new_y: y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY}\n  );\n  return {x, y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY};\n};\n\n/**\n* Set the background of the editor (NOT the actual document).\n* @function module:svgcanvas.SvgCanvas#setBackground\n* @param {string} color - String with fill color to apply\n* @param {string} url - URL or path to image to use\n* @returns {undefined}\n*/\nthis.setBackground = function (color, url) {\n  const bg = getElem('canvasBackground');\n  const border = $(bg).find('rect')[0];\n  let bgImg = getElem('background_image');\n  border.setAttribute('fill', color);\n  if (url) {\n    if (!bgImg) {\n      bgImg = svgdoc.createElementNS(NS.SVG, 'image');\n      assignAttributes(bgImg, {\n        id: 'background_image',\n        width: '100%',\n        height: '100%',\n        preserveAspectRatio: 'xMinYMin',\n        style: 'pointer-events:none'\n      });\n    }\n    setHref(bgImg, url);\n    bg.append(bgImg);\n  } else if (bgImg) {\n    bgImg.remove();\n  }\n};\n\n/**\n* Select the next/previous element within the current layer.\n* @function module:svgcanvas.SvgCanvas#cycleElement\n* @param {boolean} next - true = next and false = previous element\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nthis.cycleElement = function (next) {\n  let num;\n  const curElem = selectedElements[0];\n  let elem = false;\n  const allElems = getVisibleElements(currentGroup || getCurrentDrawing().getCurrentLayer());\n  if (!allElems.length) { return; }\n  if (curElem == null) {\n    num = next ? allElems.length - 1 : 0;\n    elem = allElems[num];\n  } else {\n    let i = allElems.length;\n    while (i--) {\n      if (allElems[i] === curElem) {\n        num = next ? i - 1 : i + 1;\n        if (num >= allElems.length) {\n          num = 0;\n        } else if (num < 0) {\n          num = allElems.length - 1;\n        }\n        elem = allElems[num];\n        break;\n      }\n    }\n  }\n  selectOnly([elem], true);\n  call('selected', selectedElements);\n};\n\nthis.clear();\n\n/**\n* @interface module:svgcanvas.PrivateMethods\n* @type {PlainObject}\n* @property {module:svgcanvas~addCommandToHistory} addCommandToHistory\n* @property {module:history.HistoryCommand} BatchCommand\n* @property {module:history.HistoryCommand} ChangeElementCommand\n* @property {module:utilities.decode64} decode64\n* @property {module:utilities.dropXMLInteralSubset} dropXMLInteralSubset\n* @property {module:utilities.encode64} encode64\n* @property {module:svgcanvas~ffClone} ffClone\n* @property {module:svgcanvas~findDuplicateGradient} findDuplicateGradient\n* @property {module:utilities.getPathBBox} getPathBBox\n* @property {module:units.getTypeMap} getTypeMap\n* @property {module:draw.identifyLayers} identifyLayers\n* @property {module:history.HistoryCommand} InsertElementCommand\n* @property {module:browser.isChrome} isChrome\n* @property {module:math.isIdentity} isIdentity\n* @property {module:browser.isIE} isIE\n* @property {module:svgcanvas~logMatrix} logMatrix\n* @property {module:history.HistoryCommand} MoveElementCommand\n* @property {module:namespaces.NS} NS\n* @property {module:utilities.preventClickDefault} preventClickDefault\n* @property {module:history.HistoryCommand} RemoveElementCommand\n* @property {module:SVGTransformList.SVGEditTransformList} SVGEditTransformList\n* @property {module:utilities.text2xml} text2xml\n* @property {module:math.transformBox} transformBox\n* @property {module:math.transformPoint} transformPoint\n* @property {module:utilities.walkTree} walkTree\n*/\n/**\n* @deprecated getPrivateMethods\n* Since all methods are/should be public somehow, this function should be removed;\n*  we might require `import` in place of this in the future once ES6 Modules\n*  widespread\n\n* Being able to access private methods publicly seems wrong somehow,\n* but currently appears to be the best way to allow testing and provide\n* access to them to plugins.\n* @function module:svgcanvas.SvgCanvas#getPrivateMethods\n* @returns {module:svgcanvas.PrivateMethods}\n*/\nthis.getPrivateMethods = function () {\n  const obj = {\n    addCommandToHistory,\n    BatchCommand,\n    ChangeElementCommand,\n    decode64,\n    dropXMLInteralSubset,\n    encode64,\n    ffClone,\n    findDefs,\n    findDuplicateGradient,\n    getElem,\n    getPathBBox,\n    getTypeMap,\n    getUrlFromAttr,\n    identifyLayers: draw.identifyLayers,\n    InsertElementCommand,\n    isChrome,\n    isIdentity,\n    isIE,\n    logMatrix,\n    MoveElementCommand,\n    NS,\n    preventClickDefault,\n    RemoveElementCommand,\n    SVGEditTransformList,\n    text2xml,\n    transformBox,\n    transformPoint,\n    walkTree\n  };\n  return obj;\n};\n  } // End constructor\n} // End class\n\nexport default SvgCanvas;\n","// Todo: Update: https://github.com/jeresig/jquery.hotkeys\n/*\n * jQuery Hotkeys Plugin\n * Copyright 2010, John Resig\n * Dual licensed under the MIT or GPL Version 2 licenses.\n *\n * http://github.com/jeresig/jquery.hotkeys\n *\n * Based upon the plugin by Tzury Bar Yochay:\n * http://github.com/tzuryby/hotkeys\n *\n * Original idea by:\n * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/\n*/\n\n// We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`\n\nexport default function(b){b.hotkeys={version:\"0.8\",specialKeys:{8:\"backspace\",9:\"tab\",13:\"return\",16:\"shift\",17:\"ctrl\",18:\"alt\",19:\"pause\",20:\"capslock\",27:\"esc\",32:\"space\",33:\"pageup\",34:\"pagedown\",35:\"end\",36:\"home\",37:\"left\",38:\"up\",39:\"right\",40:\"down\",45:\"insert\",46:\"del\",96:\"0\",97:\"1\",98:\"2\",99:\"3\",100:\"4\",101:\"5\",102:\"6\",103:\"7\",104:\"8\",105:\"9\",106:\"*\",107:\"+\",109:\"-\",110:\".\",111:\"/\",112:\"f1\",113:\"f2\",114:\"f3\",115:\"f4\",116:\"f5\",117:\"f6\",118:\"f7\",119:\"f8\",120:\"f9\",121:\"f10\",122:\"f11\",123:\"f12\",144:\"numlock\",145:\"scroll\",191:\"/\",224:\"meta\",219:\"[\",221:\"]\"},shiftNums:{\"`\":\"~\",\"1\":\"!\",\"2\":\"@\",\"3\":\"#\",\"4\":\"$\",\"5\":\"%\",\"6\":\"^\",\"7\":\"&\",\"8\":\"*\",\"9\":\"(\",\"0\":\")\",\"-\":\"_\",\"=\":\"+\",\";\":\": \",\"'\":'\"',\",\":\"<\",\".\":\">\",\"/\":\"?\",\"\\\\\":\"|\"}};function a(d){if(typeof d.data!==\"string\"){return}var c=d.handler,e=d.data.toLowerCase().split(\" \");d.handler=function(n){if(this!==n.target&&(n.which !== 27 && (/textarea|select/i.test(n.target.nodeName)||n.target.type===\"text\"))){return}var h=n.type!==\"keypress\"&&b.hotkeys.specialKeys[n.which],o=String.fromCharCode(n.which).toLowerCase(),k,m=\"\",g={};if(n.altKey&&h!==\"alt\"){m+=\"alt+\"}if(n.ctrlKey&&h!==\"ctrl\"){m+=\"ctrl+\"}if(n.metaKey&&!n.ctrlKey&&h!==\"meta\"){m+=\"meta+\"}if(n.shiftKey&&h!==\"shift\"){m+=\"shift+\"}if(h){g[m+h]=true}else{g[m+o]=true;g[m+b.hotkeys.shiftNums[o]]=true;if(m===\"shift+\"){g[b.hotkeys.shiftNums[o]]=true}}for(var j=0,f=e.length;j<f;j++){if(g[e[j]]){return c.apply(this,arguments)}}}}b.each([\"keydown\",\"keyup\",\"keypress\"],function(){b.event.special[this]={add:a}})\n\nreturn b;\n}\n","/*\n * Todo: Update to latest at https://github.com/cowboy/jquery-bbq ?\n * jQuery BBQ: Back Button & Query Library - v1.2.1 - 2/17/2010\n * http://benalman.com/projects/jquery-bbq-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n\n// For sake of modules, added this wrapping export and changed `this` to `window`\nexport default function (jQuery) {\n\n(function($,p){var i,m=Array.prototype.slice,r=decodeURIComponent,a=$.param,c,l,v,b=$.bbq=$.bbq||{},q,u,j,e=$.event.special,d=\"hashchange\",A=\"querystring\",D=\"fragment\",y=\"elemUrlAttr\",g=\"location\",k=\"href\",t=\"src\",x=/^.*\\?|#.*$/g,w=/^.*\\#/,h,C={};function E(F){return typeof F===\"string\"}function B(G){var F=m.call(arguments,1);return function(){return G.apply(this,F.concat(m.call(arguments)))}}function n(F){return F.replace(/^[^#]*#?(.*)$/,\"$1\")}function o(F){return F.replace(/(?:^[^?#]*\\?([^#]*).*$)?.*/,\"$1\")}function f(H,M,F,I,G){var O,L,K,N,J;if(I!==i){K=F.match(H?/^([^#]*)\\#?(.*)$/:/^([^#?]*)\\??([^#]*)(#?.*)/);J=K[3]||\"\";if(G===2&&E(I)){L=I.replace(H?w:x,\"\")}else{N=l(K[2]);I=E(I)?l[H?D:A](I):I;L=G===2?I:G===1?$.extend({},I,N):$.extend({},N,I);L=a(L);if(H){L=L.replace(h,r)}}O=K[1]+(H?\"#\":L||!K[1]?\"?\":\"\")+L+J}else{O=M(F!==i?F:p[g][k])}return O}a[A]=B(f,0,o);a[D]=c=B(f,1,n);c.noEscape=function(G){G=G||\"\";var F=$.map(G.split(\"\"),encodeURIComponent);h=new RegExp(F.join(\"|\"),\"g\")};c.noEscape(\",/\");$.deparam=l=function(I,F){var H={},G={\"true\":!0,\"false\":!1,\"null\":null};$.each(I.replace(/\\+/g,\" \").split(\"&\"),function(L,Q){var K=Q.split(\"=\"),P=r(K[0]),J,O=H,M=0,R=P.split(\"][\"),N=R.length-1;if(/\\[/.test(R[0])&&/\\]$/.test(R[N])){R[N]=R[N].replace(/\\]$/,\"\");R=R.shift().split(\"[\").concat(R);N=R.length-1}else{N=0}if(K.length===2){J=r(K[1]);if(F){J=J&&!isNaN(J)?+J:J===\"undefined\"?i:G[J]!==i?G[J]:J}if(N){for(;M<=N;M++){P=R[M]===\"\"?O.length:R[M];O=O[P]=M<N?O[P]||(R[M+1]&&isNaN(R[M+1])?{}:[]):J}}else{if($.isArray(H[P])){H[P].push(J)}else{if(H[P]!==i){H[P]=[H[P],J]}else{H[P]=J}}}}else{if(P){H[P]=F?i:\"\"}}});return H};function z(H,F,G){if(F===i||typeof F===\"boolean\"){G=F;F=a[H?D:A]()}else{F=E(F)?F.replace(H?w:x,\"\"):F}return l(F,G)}l[A]=B(z,0);l[D]=v=B(z,1);$[y]||($[y]=function(F){return $.extend(C,F)})({a:k,base:k,iframe:t,img:t,input:t,form:\"action\",link:k,script:t});j=$[y];function s(I,G,H,F){if(!E(H)&&typeof H!==\"object\"){F=H;H=G;G=i}return this.each(function(){var L=$(this),J=G||j()[(this.nodeName||\"\").toLowerCase()]||\"\",K=J&&L.attr(J)||\"\";L.attr(J,a[I](K,H,F))})}$.fn[A]=B(s,A);$.fn[D]=B(s,D);b.pushState=q=function(I,F){if(E(I)&&/^#/.test(I)&&F===i){F=2}var H=I!==i,G=c(p[g][k],H?I:{},H?F:2);p[g][k]=G+(/#/.test(G)?\"\":\"#\")};b.getState=u=function(F,G){return F===i||typeof F===\"boolean\"?v(F):v(G)[F]};b.removeState=function(F){var G={};if(F!==i){G=u();$.each($.isArray(F)?F:arguments,function(I,H){delete G[H]})}q(G,2)};e[d]=$.extend(e[d],{add:function(F){var H;function G(J){var I=J[D]=c();J.getState=function(K,L){return K===i||typeof K===\"boolean\"?l(I,K):l(I,L)[K]};H.apply(this,arguments)}if($.isFunction(F)){H=F;return G}else{H=F.handler;F.handler=G}}})})(jQuery,window);\n/*\n * jQuery hashchange event - v1.2 - 2/11/2010\n * http://benalman.com/projects/jquery-hashchange-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n(function($,i,b){var j,k=$.event.special,c=\"location\",d=\"hashchange\",l=\"href\",f=$.browser,g=document.documentMode,h=f.msie&&(g===b||g<8),e=\"on\"+d in i&&!h;function a(m){m=m||i[c][l];return m.replace(/^[^#]*#?(.*)$/,\"$1\")}$[d+\"Delay\"]=100;k[d]=$.extend(k[d],{setup:function(){if(e){return false}$(j.start)},teardown:function(){if(e){return false}$(j.stop)}});j=(function(){var m={},r,n,o,q;function p(){o=q=function(s){return s};if(h){n=$('<iframe src=\"javascript:0\"/>').hide().insertAfter(\"body\")[0].contentWindow;q=function(){return a(n.document[c][l])};o=function(u,s){if(u!==s){var t=n.document;t.open().close();t[c].hash=\"#\"+u}};o(a())}}m.start=function(){if(r){return}var t=a();o||p();(function s(){var v=a(),u=q(t);if(v!==t){o(t=v,u);$(i).trigger(d)}else{if(u!==t){i[c][l]=i[c][l].replace(/#.*/,\"\")+\"#\"+u}}r=setTimeout(s,$[d+\"Delay\"])})()};m.stop=function(){if(!n){r&&clearTimeout(r);r=0}};return m})()})(jQuery,window);\n\nreturn jQuery;\n}\n","/**\n * SVG Icon Loader 2.0\n *\n * jQuery Plugin for loading SVG icons from a single file\n *\n * Adds {@link external:jQuery.svgIcons}, {@link external:jQuery.getSvgIcon}, {@link external:jQuery.resizeSvgIcons}\n *\n * How to use:\n\n1. Create the SVG master file that includes all icons:\n\nThe master SVG icon-containing file is an SVG file that contains\n`<g>` elements. Each `<g>` element should contain the markup of an SVG\nicon. The `<g>` element has an ID that should\ncorrespond with the ID of the HTML element used on the page that should contain\nor optionally be replaced by the icon. Additionally, one empty element should be\nadded at the end with id \"svg_eof\".\n\n2. Optionally create fallback raster images for each SVG icon.\n\n3. Include the jQuery and the SVG Icon Loader scripts on your page.\n\n4. Run `$.svgIcons()` when the document is ready. See its signature\n\n5. To access an icon at a later point without using the callback, use this:\n  `$.getSvgIcon(id (string), uniqueClone (boolean))`;\n\nThis will return the icon (as jQuery object) with a given ID.\n\n6. To resize icons at a later point without using the callback, use this:\n  `$.resizeSvgIcons(resizeOptions)` (use the same way as the \"resize\" parameter)\n *\n * @module jQuerySVGIcons\n * @license MIT\n * @copyright (c) 2009 Alexis Deveria\n * {@link http://a.deveria.com}\n * @example usage #1:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg'); // The SVG file that contains all icons\n  // No options have been set, so all icons will automatically be inserted\n  // into HTML elements that match the same IDs.\n});\n\n* @example usage #2:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg', { // The SVG file that contains all icons\n    callback (icons) { // Custom callback function that sets click\n                  // events for each icon\n      $.each(icons, function(id, icon) {\n        icon.click(function() {\n          alert('You clicked on the icon with id ' + id);\n        });\n      });\n    }\n  }); //The SVG file that contains all icons\n});\n\n* @example usage #3:\n\n$(function() {\n  $.svgIcons('my_icon_set.svgz', { // The SVGZ file that contains all icons\n    w: 32,  // All icons will be 32px wide\n    h: 32,  // All icons will be 32px high\n    fallback_path: 'icons/',  // All fallback files can be found here\n    fallback: {\n      '#open_icon': 'open.png',  // The \"open.png\" will be appended to the\n                    // HTML element with ID \"open_icon\"\n      '#close_icon': 'close.png',\n      '#save_icon': 'save.png'\n    },\n    placement: {'.open_icon','open'}, // The \"open\" icon will be added\n                    // to all elements with class \"open_icon\"\n    resize () {\n      '#save_icon .svg_icon': 64  // The \"save\" icon will be resized to 64 x 64px\n    },\n\n    callback (icons) { // Sets background color for \"close\" icon\n      icons['close'].css('background','red');\n    },\n\n    svgz: true // Indicates that an SVGZ file is being used\n\n  })\n});\n*/\n\n/**\n* @callback module:jQuerySVGIcons.SVGIconsLoadedCallback\n* @param {PlainObject.<string, external:jQuery>} svgIcons IDs keyed to jQuery objects of images\n*/\n\n/**\n * @function module:jQuerySVGIcons.jQuerySVGIcons\n * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object\n * @returns {external:jQuery} The enhanced jQuery object\n*/\nexport default function ($) {\n  const svgIcons = {};\n\n  let fixIDs;\n  /**\n  * @function external:jQuery.svgIcons\n  * @param {string} file The location of a local SVG or SVGz file\n  * @param {PlainObject} [opts]\n  * @param {Float} [opts.w] The icon widths\n  * @param {Float} [opts.h] The icon heights\n  * @param {PlainObject.<string, string>} [opts.fallback] List of raster images with each\n    key being the SVG icon ID to replace, and the value the image file name\n  * @param {string} [opts.fallback_path] The path to use for all images\n    listed under \"fallback\"\n  * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,\n    rather than include the SVG icon.\n  * @param {PlainObject.<string, string>} [opts.placement] List with selectors for keys and SVG icon ids\n    as values. This provides a custom method of adding icons.\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} [opts.resize] List with selectors for keys and numbers\n    as values. This allows an easy way to resize specific icons.\n  * @param {module:jQuerySVGIcons.SVGIconsLoadedCallback} [opts.callback] A function to call when all icons have been loaded.\n  * @param {boolean} [opts.id_match=true] Automatically attempt to match SVG icon ids with\n    corresponding HTML id\n  * @param {boolean} [opts.no_img] Prevent attempting to convert the icon into an `<img>`\n    element (may be faster, help for browser consistency)\n  * @param {boolean} [opts.svgz] Indicate that the file is an SVGZ file, and thus not to\n    parse as XML. SVGZ files add compression benefits, but getting data from\n    them fails in Firefox 2 and older.\n  * @returns {undefined}\n  */\n  $.svgIcons = function (file, opts = {}) {\n    const svgns = 'http://www.w3.org/2000/svg',\n      xlinkns = 'http://www.w3.org/1999/xlink',\n      iconW = opts.w || 24,\n      iconH = opts.h || 24;\n    let elems, svgdoc, testImg,\n      iconsMade = false, dataLoaded = false, loadAttempts = 0;\n    const isOpera = !!window.opera,\n      // ua = navigator.userAgent,\n      // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),\n      dataPre = 'data:image/svg+xml;charset=utf-8;base64,';\n\n    let dataEl;\n    if (opts.svgz) {\n      dataEl = $('<object data=\"' + file + '\" type=image/svg+xml>').appendTo('body').hide();\n      try {\n        svgdoc = dataEl[0].contentDocument;\n        dataEl.load(getIcons);\n        getIcons(0, true); // Opera will not run \"load\" event if file is already cached\n      } catch (err1) {\n        useFallback();\n      }\n    } else {\n      const parser = new DOMParser();\n      $.ajax({\n        url: file,\n        dataType: 'string',\n        success (data) {\n          if (!data) {\n            $(useFallback);\n            return;\n          }\n          svgdoc = parser.parseFromString(data, 'text/xml');\n          $(function () {\n            getIcons('ajax');\n          });\n        },\n        error (err) {\n          // TODO: Fix Opera widget icon bug\n          if (window.opera) {\n            $(function () {\n              useFallback();\n            });\n          } else {\n            if (err.responseText) {\n              svgdoc = parser.parseFromString(err.responseText, 'text/xml');\n\n              if (!svgdoc.childNodes.length) {\n                $(useFallback);\n              }\n              $(function () {\n                getIcons('ajax');\n              });\n            } else {\n              $(useFallback);\n            }\n          }\n        }\n      });\n    }\n\n    function getIcons (evt, noWait) {\n      if (evt !== 'ajax') {\n        if (dataLoaded) return;\n        // Webkit sometimes says svgdoc is undefined, other times\n        // it fails to load all nodes. Thus we must make sure the \"eof\"\n        // element is loaded.\n        svgdoc = dataEl[0].contentDocument; // Needed again for Webkit\n        const isReady = (svgdoc && svgdoc.getElementById('svg_eof'));\n        if (!isReady && !(noWait && isReady)) {\n          loadAttempts++;\n          if (loadAttempts < 50) {\n            setTimeout(getIcons, 20);\n          } else {\n            useFallback();\n            dataLoaded = true;\n          }\n          return;\n        }\n        dataLoaded = true;\n      }\n\n      elems = $(svgdoc.firstChild).children(); // .getElementsByTagName('foreignContent');\n\n      if (!opts.no_img) {\n        const testSrc = dataPre + 'PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzUiIGhlaWdodD0iMjc1Ij48L3N2Zz4%3D';\n\n        testImg = $(new Image()).attr({\n          src: testSrc,\n          width: 0,\n          height: 0\n        }).appendTo('body')\n          .load(function () {\n            // Safari 4 crashes, Opera and Chrome don't\n            makeIcons(true);\n          }).error(function () {\n            makeIcons();\n          });\n      } else {\n        setTimeout(function () {\n          if (!iconsMade) makeIcons();\n        }, 500);\n      }\n    }\n\n    function setIcon (target, icon, id, setID) {\n      if (isOpera) icon.css('visibility', 'hidden');\n      if (opts.replace) {\n        if (setID) icon.attr('id', id);\n        const cl = target.attr('class');\n        if (cl) icon.attr('class', 'svg_icon ' + cl);\n        target.replaceWith(icon);\n      } else {\n        target.append(icon);\n      }\n      if (isOpera) {\n        setTimeout(function () {\n          icon.removeAttr('style');\n        }, 1);\n      }\n    }\n\n    let holder;\n    function addIcon (icon, id) {\n      if (opts.id_match === undefined || opts.id_match !== false) {\n        setIcon(holder, icon, id, true);\n      }\n      svgIcons[id] = icon;\n    }\n\n    function makeIcons (toImage, fallback) {\n      if (iconsMade) return;\n      if (opts.no_img) toImage = false;\n\n      let tempHolder;\n      if (toImage) {\n        tempHolder = $(document.createElement('div'));\n        tempHolder.hide().appendTo('body');\n      }\n      if (fallback) {\n        const path = opts.fallback_path || '';\n        $.each(fallback, function (id, imgsrc) {\n          holder = $('#' + id);\n          const icon = $(new Image())\n            .attr({\n              class: 'svg_icon',\n              src: path + imgsrc,\n              width: iconW,\n              height: iconH,\n              alt: 'icon'\n            });\n\n          addIcon(icon, id);\n        });\n      } else {\n        const len = elems.length;\n        for (let i = 0; i < len; i++) {\n          const elem = elems[i];\n          const {id} = elem;\n          if (id === 'svg_eof') break;\n          holder = $('#' + id);\n          const svgroot = document.createElementNS(svgns, 'svg');\n          // Per https://www.w3.org/TR/xml-names11/#defaulting, the namespace for\n          // attributes should have no value.\n          svgroot.setAttribute('viewBox', [0, 0, iconW, iconH].join(' '));\n\n          let svg = elem.getElementsByTagNameNS(svgns, 'svg')[0];\n\n          // Make flexible by converting width/height to viewBox\n          const w = svg.getAttribute('width');\n          const h = svg.getAttribute('height');\n          svg.removeAttribute('width');\n          svg.removeAttribute('height');\n\n          const vb = svg.getAttribute('viewBox');\n          if (!vb) {\n            svg.setAttribute('viewBox', [0, 0, w, h].join(' '));\n          }\n\n          // Not using jQuery to be a bit faster\n          svgroot.setAttribute('xmlns', svgns);\n          svgroot.setAttribute('width', iconW);\n          svgroot.setAttribute('height', iconH);\n          svgroot.setAttribute('xmlns:xlink', xlinkns);\n          svgroot.setAttribute('class', 'svg_icon');\n\n          // Without cloning, Firefox will make another GET request.\n          // With cloning, causes issue in Opera/Win/Non-EN\n          if (!isOpera) svg = svg.cloneNode(true);\n\n          svgroot.append(svg);\n\n          let icon;\n          if (toImage) {\n            tempHolder.empty().append(svgroot);\n            const str = dataPre + encode64(unescape(encodeURIComponent(new XMLSerializer().serializeToString(svgroot))));\n            icon = $(new Image())\n              .attr({class: 'svg_icon', src: str});\n          } else {\n            icon = fixIDs($(svgroot), i);\n          }\n          addIcon(icon, id);\n        }\n      }\n\n      if (opts.placement) {\n        $.each(opts.placement, function (sel, id) {\n          if (!svgIcons[id]) return;\n          $(sel).each(function (i) {\n            let copy = svgIcons[id].clone();\n            if (i > 0 && !toImage) copy = fixIDs(copy, i, true);\n            setIcon($(this), copy, id);\n          });\n        });\n      }\n      if (!fallback) {\n        if (toImage) tempHolder.remove();\n        if (dataEl) dataEl.remove();\n        if (testImg) testImg.remove();\n      }\n      if (opts.resize) $.resizeSvgIcons(opts.resize);\n      iconsMade = true;\n\n      if (opts.callback) opts.callback(svgIcons);\n    }\n\n    fixIDs = function (svgEl, svgNum, force) {\n      const defs = svgEl.find('defs');\n      if (!defs.length) return svgEl;\n\n      let idElems;\n      if (isOpera) {\n        idElems = defs.find('*').filter(function () {\n          return !!this.id;\n        });\n      } else {\n        idElems = defs.find('[id]');\n      }\n\n      const allElems = svgEl[0].getElementsByTagName('*'), len = allElems.length;\n\n      idElems.each(function (i) {\n        const {id} = this;\n        /*\n        const noDupes = ($(svgdoc).find('#' + id).length <= 1);\n        if (isOpera) noDupes = false; // Opera didn't clone svgEl, so not reliable\n        if(!force && noDupes) return;\n        */\n        const newId = 'x' + id + svgNum + i;\n        this.id = newId;\n\n        const oldVal = 'url(#' + id + ')';\n        const newVal = 'url(#' + newId + ')';\n\n        // Selector method, possibly faster but fails in Opera / jQuery 1.4.3\n        //  svgEl.find('[fill=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('fill', 'url(#' + newId + ')');\n        //  }).end().find('[stroke=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('stroke', 'url(#' + newId + ')');\n        //  }).end().find('use').each(function() {\n        //    if(this.getAttribute('xlink:href') == '#' + id) {\n        //      this.setAttributeNS(xlinkns,'href','#' + newId);\n        //    }\n        //  }).end().find('[filter=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('filter', 'url(#' + newId + ')');\n        //  });\n\n        for (i = 0; i < len; i++) {\n          const elem = allElems[i];\n          if (elem.getAttribute('fill') === oldVal) {\n            elem.setAttribute('fill', newVal);\n          }\n          if (elem.getAttribute('stroke') === oldVal) {\n            elem.setAttribute('stroke', newVal);\n          }\n          if (elem.getAttribute('filter') === oldVal) {\n            elem.setAttribute('filter', newVal);\n          }\n        }\n      });\n      return svgEl;\n    };\n\n    function useFallback () {\n      if (file.includes('.svgz')) {\n        const regFile = file.replace('.svgz', '.svg');\n        if (window.console) {\n          console.log('.svgz failed, trying with .svg');\n        }\n        $.svgIcons(regFile, opts);\n      } else if (opts.fallback) {\n        makeIcons(false, opts.fallback);\n      }\n    }\n\n    function encode64 (input) {\n      // base64 strings are 4/3 larger than the original string\n      if (window.btoa) return window.btoa(input);\n      const _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n      const output = new Array(Math.floor((input.length + 2) / 3) * 4);\n\n      let i = 0, p = 0;\n      do {\n        const chr1 = input.charCodeAt(i++);\n        const chr2 = input.charCodeAt(i++);\n        const chr3 = input.charCodeAt(i++);\n\n        const enc1 = chr1 >> 2;\n        const enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n\n        let enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n        let enc4 = chr3 & 63;\n        if (isNaN(chr2)) {\n          enc3 = enc4 = 64;\n        } else if (isNaN(chr3)) {\n          enc4 = 64;\n        }\n\n        output[p++] = _keyStr.charAt(enc1);\n        output[p++] = _keyStr.charAt(enc2);\n        output[p++] = _keyStr.charAt(enc3);\n        output[p++] = _keyStr.charAt(enc4);\n      } while (i < input.length);\n\n      return output.join('');\n    }\n  };\n\n  /**\n  * @function external:jQuery.getSvgIcon\n  * @param {string} id\n  * @param {boolean} uniqueClone Whether to clone\n  * @returns {external:jQuery} The icon (optionally cloned)\n  */\n  $.getSvgIcon = function (id, uniqueClone) {\n    let icon = svgIcons[id];\n    if (uniqueClone && icon) {\n      icon = fixIDs(icon, 0, true).clone(true);\n    }\n    return icon;\n  };\n\n  /**\n  * @typedef {GenericArray} module:jQuerySVGIcons.Dimensions\n  * @property {Integer} length 2\n  * @property {Float} 0 Width\n  * @property {Float} 1 Height\n  */\n\n  /**\n  * If a Float is used, it will represent width and height. Arrays contain the width and height.\n  * @typedef {module:jQuerySVGIcons.Dimensions|Float} module:jQuerySVGIcons.Size\n  */\n\n  /**\n  * @function external:jQuery.resizeSvgIcons\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} obj Object with selectors as keys. The values are sizes.\n  * @returns {undefined}\n  */\n  $.resizeSvgIcons = function (obj) {\n    // FF2 and older don't detect .svg_icon, so we change it detect svg elems instead\n    const changeSel = !$('.svg_icon:first').length;\n    $.each(obj, function (sel, size) {\n      const arr = Array.isArray(size);\n      const w = arr ? size[0] : size,\n        h = arr ? size[1] : size;\n      if (changeSel) {\n        sel = sel.replace(/\\.svg_icon/g, 'svg');\n      }\n      $(sel).each(function () {\n        this.setAttribute('width', w);\n        this.setAttribute('height', h);\n        if (window.opera && window.widget) {\n          this.parentNode.style.width = w + 'px';\n          this.parentNode.style.height = h + 'px';\n        }\n      });\n    });\n  };\n  return $;\n}\n","/**\n * jGraduate 0.4\n *\n * jQuery Plugin for a gradient picker\n *\n * @module jGraduate\n * @copyright 2010 Jeff Schiller {@link http://blog.codedread.com/}, 2010 Alexis Deveria {@link http://a.deveria.com/}\n *\n * @license Apache-2.0\n * @example\n * // The Paint object is described below.\n * $.jGraduate.Paint() // constructs a 'none' color\n * @example $.jGraduate.Paint({copy: o}) // creates a copy of the paint o\n * @example $.jGraduate.Paint({hex: '#rrggbb'}) // creates a solid color paint with hex = \"#rrggbb\"\n * @example $.jGraduate.Paint({linearGradient: o, a: 50}) // creates a linear gradient paint with opacity=0.5\n * @example $.jGraduate.Paint({radialGradient: o, a: 7}) // creates a radial gradient paint with opacity=0.07\n * @example $.jGraduate.Paint({hex: '#rrggbb', linearGradient: o}) // throws an exception?\n *\n*/\n\n/**\n  * The jQuery namespace.\n  * @external jQuery\n*/\n/**\n * The jQuery plugin namespace.\n * @namespace {PlainObject} fn\n * @memberof external:jQuery\n * @see {@link http://learn.jquery.com/plugins/|jQuery Plugins}\n */\n\nconst ns = {\n  svg: 'http://www.w3.org/2000/svg',\n  xlink: 'http://www.w3.org/1999/xlink'\n};\n\nif (!window.console) {\n  window.console = {\n    log (str) {},\n    dir (str) {}\n  };\n}\n\n/**\n* Adds {@link external:jQuery.jGraduate.Paint},\n* {@link external:jQuery.fn.jGraduateDefaults},\n* {@link external:jQuery.fn.jGraduate}.\n* @function module:jGraduate.jGraduate\n* @param {external:jQuery} $ The jQuery instance to wrap\n* @returns {external:jQuery}\n*/\nexport default function ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jGraduate.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.jGraduatePaintOptions\n  * @param {Float} [alpha]\n  * @param {module:jGraduate~Paint} [copy] Copy paint object\n  * @param {SVGLinearGradientElement} [linearGradient]\n  * @param {SVGRadialGradientElement} [radialGradient]\n  * @param {string} [solidColor]\n  */\n\n  /**\n  * @memberof module:jGraduate~\n  */\n  class Paint {\n    /**\n     * @param {module:jGraduate.jGraduatePaintOptions} [opt]\n    */\n    constructor (opt) {\n      const options = opt || {};\n      this.alpha = isNaN(options.alpha) ? 100 : options.alpha;\n      // copy paint object\n      if (options.copy) {\n        /**\n         * @name module:jGraduate~Paint#type\n         * @type {\"none\"|\"solidColor\"|\"linearGradient\"|\"radialGradient\"}\n         */\n        this.type = options.copy.type;\n        /**\n         * Represents opacity (0-100)\n         * @name module:jGraduate~Paint#alpha\n         * @type {Float}\n         */\n        this.alpha = options.copy.alpha;\n        /**\n         * Represents #RRGGBB hex of color\n         * @name module:jGraduate~Paint#solidColor\n         * @type {string}\n         */\n        this.solidColor = null;\n        /**\n         * @name module:jGraduate~Paint#linearGradient\n         * @type {SVGLinearGradientElement}\n         */\n        this.linearGradient = null;\n        /**\n         * @name module:jGraduate~Paint#radialGradient\n         * @type {SVGRadialGradientElement}\n         */\n        this.radialGradient = null;\n\n        switch (this.type) {\n        case 'none':\n          break;\n        case 'solidColor':\n          this.solidColor = options.copy.solidColor;\n          break;\n        case 'linearGradient':\n          this.linearGradient = options.copy.linearGradient.cloneNode(true);\n          break;\n        case 'radialGradient':\n          this.radialGradient = options.copy.radialGradient.cloneNode(true);\n          break;\n        }\n      // create linear gradient paint\n      } else if (options.linearGradient) {\n        this.type = 'linearGradient';\n        this.solidColor = null;\n        this.radialGradient = null;\n        this.linearGradient = options.linearGradient.cloneNode(true);\n      // create linear gradient paint\n      } else if (options.radialGradient) {\n        this.type = 'radialGradient';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = options.radialGradient.cloneNode(true);\n      // create solid color paint\n      } else if (options.solidColor) {\n        this.type = 'solidColor';\n        this.solidColor = options.solidColor;\n      // create empty paint\n      } else {\n        this.type = 'none';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = null;\n      }\n    }\n  }\n  /**\n  * @namespace {PlainObject} jGraduate\n  * @memberof external:jQuery\n  */\n  $.jGraduate = /** @lends external:jQuery.jGraduate */ {\n    /**\n    * @class external:jQuery.jGraduate.Paint\n    * @see module:jGraduate~Paint\n    */\n    Paint\n  };\n\n  // JSDoc doesn't show this as belonging to our `module:jGraduate.Options` type,\n  //   so we use `@see`\n  /**\n  * @namespace {module:jGraduate.Options} jGraduateDefaults\n  * @memberof external:jQuery.fn\n  */\n  $.fn.jGraduateDefaults = /** @lends external:jQuery.fn.jGraduateDefaults */ {\n    /**\n    * Creates an object with a 'none' color\n    * @type {external:jQuery.jGraduate.Paint}\n    * @see module:jGraduate.Options\n    */\n    paint: new $.jGraduate.Paint(),\n    /**\n    * @namespace\n    */\n    window: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      pickerTitle: 'Drag markers to pick a paint'\n    },\n    /**\n    * @namespace\n    */\n    images: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      clientPath: 'images/'\n    },\n    /**\n    * @type {string}\n    * @see module:jGraduate.Options\n    */\n    newstop: 'inverse' // same, inverse, black, white\n  };\n\n  const isGecko = navigator.userAgent.includes('Gecko/');\n\n  function setAttrs (elem, attrs) {\n    if (isGecko) {\n      for (const aname in attrs) elem.setAttribute(aname, attrs[aname]);\n    } else {\n      for (const aname in attrs) {\n        const val = attrs[aname], prop = elem[aname];\n        if (prop && prop.constructor === 'SVGLength') {\n          prop.baseVal.value = val;\n        } else {\n          elem.setAttribute(aname, val);\n        }\n      }\n    }\n  }\n\n  function mkElem (name, attrs, newparent) {\n    const elem = document.createElementNS(ns.svg, name);\n    setAttrs(elem, attrs);\n    if (newparent) {\n      newparent.append(elem);\n    }\n    return elem;\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.ColorOpac Object may have one or both values\n  * @property {string} [color] #Hex color\n  * @property {Float} [opac] 0-1\n  */\n  /**\n  * @typedef {PlainObject} module:jGraduate.Options\n  * @property {module:jGraduate~Paint} [paint] A Paint object object describing the paint to display initially; defaults to a new instance without options (defaults to opaque white)\n  * @property {external:Window} [window]\n  * @property {string} [window.pickerTitle='Drag markers to pick a paint']\n  * @property {PlainObject} [images]\n  * @property {string} [images.clientPath='images/']\n  * @property {\"same\"|\"inverse\"|\"black\"|\"white\"|module:jGraduate.ColorOpac} [newstop=\"inverse\"]\n  */\n\n  /**\n  * @callback external:jQuery.fn.jGraduate.OkCallback\n  * @param {external:jQuery.jGraduate.Paint} paint\n  * @returns {undefined}\n  */\n  /**\n  * @callback external:jQuery.fn.jGraduate.CancelCallback\n  * @returns {undefined}\n  */\n\n  /**\n  * @function external:jQuery.fn.jGraduate\n  * @param {module:jGraduate.Options} [options]\n  * @param {external:jQuery.fn.jGraduate.OkCallback} [okCallback] Called with a Paint object when Ok is pressed\n  * @param {external:jQuery.fn.jGraduate.CancelCallback} [cancelCallback] Called with no arguments when Cancel is pressed\n  * @returns {external:jQuery}\n  */\n  $.fn.jGraduate = function (options, okCallback, cancelCallback) {\n    return this.each(function () {\n      const $this = $(this),\n        $settings = $.extend(true, {}, $.fn.jGraduateDefaults, options || {}),\n        id = $this.attr('id'),\n        idref = '#' + $this.attr('id') + ' ';\n\n      if (!idref) {\n        alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');\n        return;\n      }\n\n      const okClicked = function () {\n        switch ($this.paint.type) {\n        case 'radialGradient':\n          $this.paint.linearGradient = null;\n          break;\n        case 'linearGradient':\n          $this.paint.radialGradient = null;\n          break;\n        case 'solidColor':\n          $this.paint.radialGradient = $this.paint.linearGradient = null;\n          break;\n        }\n        typeof $this.okCallback === 'function' && $this.okCallback($this.paint);\n        $this.hide();\n      };\n      const cancelClicked = function () {\n        typeof $this.cancelCallback === 'function' && $this.cancelCallback();\n        $this.hide();\n      };\n\n      $.extend(true, $this, { // public properties, methods, and callbacks\n        // make a copy of the incoming paint\n        paint: new $.jGraduate.Paint({copy: $settings.paint}),\n        okCallback: typeof okCallback === 'function' ? okCallback : null,\n        cancelCallback: typeof cancelCallback === 'function' ? cancelCallback : null\n      });\n\n      let // pos = $this.position(),\n        color = null;\n      const $win = $(window);\n\n      if ($this.paint.type === 'none') {\n        $this.paint = new $.jGraduate.Paint({solidColor: 'ffffff'});\n      }\n\n      $this.addClass('jGraduate_Picker');\n      $this.html(\n        '<ul class=\"jGraduate_tabs\">' +\n          '<li class=\"jGraduate_tab_color jGraduate_tab_current\" data-type=\"col\">Solid Color</li>' +\n          '<li class=\"jGraduate_tab_lingrad\" data-type=\"lg\">Linear Gradient</li>' +\n          '<li class=\"jGraduate_tab_radgrad\" data-type=\"rg\">Radial Gradient</li>' +\n        '</ul>' +\n        '<div class=\"jGraduate_colPick\"></div>' +\n        '<div class=\"jGraduate_gradPick\"></div>' +\n        '<div class=\"jGraduate_LightBox\"></div>' +\n        '<div id=\"' + id + '_jGraduate_stopPicker\" class=\"jGraduate_stopPicker\"></div>'\n      );\n      const colPicker = $(idref + '> .jGraduate_colPick');\n      const gradPicker = $(idref + '> .jGraduate_gradPick');\n\n      gradPicker.html(\n        '<div id=\"' + id + '_jGraduate_Swatch\" class=\"jGraduate_Swatch\">' +\n          '<h2 class=\"jGraduate_Title\">' + $settings.window.pickerTitle + '</h2>' +\n          '<div id=\"' + id + '_jGraduate_GradContainer\" class=\"jGraduate_GradContainer\"></div>' +\n          '<div id=\"' + id + '_jGraduate_StopSlider\" class=\"jGraduate_StopSlider\"></div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_lg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Begin Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x1\" size=\"3\" title=\"Enter starting x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y1\" size=\"3\" title=\"Enter starting y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">End Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x2\" size=\"3\" title=\"Enter ending x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y2\" size=\"3\" title=\"Enter ending y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_rg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Center Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Focal Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>Match center: <input type=\"checkbox\" checked=\"checked\" id=\"' + id + '_jGraduate_match_ctr\"/></label><br/>' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_StopSection jGraduate_SpreadMethod\">' +\n          '<label class=\"jGraduate_Form_Heading\">Spread method</label>' +\n          '<div class=\"jGraduate_Form_Section\">' +\n            '<select class=\"jGraduate_spreadMethod\">' +\n              '<option value=pad selected>Pad</option>' +\n              '<option value=reflect>Reflect</option>' +\n              '<option value=repeat>Repeat</option>' +\n            '</select>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form\">' +\n          '<div class=\"jGraduate_Slider jGraduate_RadiusField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Radius:</label>' +\n            '<div id=\"' + id + '_jGraduate_Radius\" class=\"jGraduate_SliderBar jGraduate_Radius\" title=\"Click to set radius\">' +\n              '<img id=\"' + id + '_jGraduate_RadiusArrows\" class=\"jGraduate_RadiusArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_RadiusInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_EllipField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Ellip:</label>' +\n            '<div id=\"' + id + '_jGraduate_Ellip\" class=\"jGraduate_SliderBar jGraduate_Ellip\" title=\"Click to set Ellip\">' +\n              '<img id=\"' + id + '_jGraduate_EllipArrows\" class=\"jGraduate_EllipArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_EllipInput\" size=\"3\" value=\"0\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_AngleField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Angle:</label>' +\n            '<div id=\"' + id + '_jGraduate_Angle\" class=\"jGraduate_SliderBar jGraduate_Angle\" title=\"Click to set Angle\">' +\n              '<img id=\"' + id + '_jGraduate_AngleArrows\" class=\"jGraduate_AngleArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_AngleInput\" size=\"3\" value=\"0\"/>deg</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_OpacField\">' +\n            '<label class=\"prelabel\">Opac:</label>' +\n            '<div id=\"' + id + '_jGraduate_Opac\" class=\"jGraduate_SliderBar jGraduate_Opac\" title=\"Click to set Opac\">' +\n              '<img id=\"' + id + '_jGraduate_OpacArrows\" class=\"jGraduate_OpacArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_OpacInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_OkCancel\">' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Ok\" class=\"jGraduate_Ok\" value=\"OK\"/>' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Cancel\" class=\"jGraduate_Cancel\" value=\"Cancel\"/>' +\n        '</div>');\n\n      // --------------\n      // Set up all the SVG elements (the gradient, stops and rectangle)\n      const MAX = 256,\n        MARGINX = 0,\n        MARGINY = 0,\n        // STOP_RADIUS = 15 / 2,\n        SIZEX = MAX - 2 * MARGINX,\n        SIZEY = MAX - 2 * MARGINY;\n\n      const attrInput = {};\n\n      const SLIDERW = 145;\n      $('.jGraduate_SliderBar').width(SLIDERW);\n\n      const container = $('#' + id + '_jGraduate_GradContainer')[0];\n\n      const svg = mkElem('svg', {\n        id: id + '_jgraduate_svg',\n        width: MAX,\n        height: MAX,\n        xmlns: ns.svg\n      }, container);\n\n      // This wasn't working as designed\n      // let curType;\n      // curType = curType || $this.paint.type;\n\n      // if we are sent a gradient, import it\n      let curType = $this.paint.type;\n\n      let grad = $this.paint[curType];\n      let curGradient = grad;\n\n      const gradalpha = $this.paint.alpha;\n\n      const isSolid = curType === 'solidColor';\n\n      // Make any missing gradients\n      switch (curType) {\n      case 'solidColor':\n        // fall through\n      case 'linearGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_lg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('radialGradient', {\n          id: id + '_rg_jgraduate_grad'\n        }, svg);\n        if (curType === 'linearGradient') { break; }\n        // fall through\n      case 'radialGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_rg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('linearGradient', {\n          id: id + '_lg_jgraduate_grad'\n        }, svg);\n      }\n\n      let stopGroup; // eslint-disable-line prefer-const\n      if (isSolid) {\n        grad = curGradient = $('#' + id + '_lg_jgraduate_grad')[0];\n        color = $this.paint[curType];\n        mkStop(0, '#' + color, 1);\n\n        const type = typeof $settings.newstop;\n\n        if (type === 'string') {\n          switch ($settings.newstop) {\n          case 'same':\n            mkStop(1, '#' + color, 1);\n            break;\n\n          case 'inverse':\n            // Invert current color for second stop\n            let inverted = '';\n            for (let i = 0; i < 6; i += 2) {\n              // const ch = color.substr(i, 2);\n              let inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);\n              if (inv.length < 2) inv = 0 + inv;\n              inverted += inv;\n            }\n            mkStop(1, '#' + inverted, 1);\n            break;\n\n          case 'white':\n            mkStop(1, '#ffffff', 1);\n            break;\n\n          case 'black':\n            mkStop(1, '#000000', 1);\n            break;\n          }\n        } else if (type === 'object') {\n          const opac = ('opac' in $settings.newstop) ? $settings.newstop.opac : 1;\n          mkStop(1, ($settings.newstop.color || '#' + color), opac);\n        }\n      }\n\n      const x1 = parseFloat(grad.getAttribute('x1') || 0.0),\n        y1 = parseFloat(grad.getAttribute('y1') || 0.0),\n        x2 = parseFloat(grad.getAttribute('x2') || 1.0),\n        y2 = parseFloat(grad.getAttribute('y2') || 0.0);\n\n      const cx = parseFloat(grad.getAttribute('cx') || 0.5),\n        cy = parseFloat(grad.getAttribute('cy') || 0.5),\n        fx = parseFloat(grad.getAttribute('fx') || cx),\n        fy = parseFloat(grad.getAttribute('fy') || cy);\n\n      const previewRect = mkElem('rect', {\n        id: id + '_jgraduate_rect',\n        x: MARGINX,\n        y: MARGINY,\n        width: SIZEX,\n        height: SIZEY,\n        fill: 'url(#' + id + '_jgraduate_grad)',\n        'fill-opacity': gradalpha / 100\n      }, svg);\n\n      // stop visuals created here\n      const beginCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_lg_field',\n        title: 'Begin Stop'\n      }).text(1).css({\n        top: y1 * MAX,\n        left: x1 * MAX\n      }).data('coord', 'start').appendTo(container);\n\n      const endCoord = beginCoord.clone().text(2).css({\n        top: y2 * MAX,\n        left: x2 * MAX\n      }).attr('title', 'End stop').data('coord', 'end').appendTo(container);\n\n      const centerCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_rg_field',\n        title: 'Center stop'\n      }).text('C').css({\n        top: cy * MAX,\n        left: cx * MAX\n      }).data('coord', 'center').appendTo(container);\n\n      const focusCoord = centerCoord.clone().text('F').css({\n        top: fy * MAX,\n        left: fx * MAX,\n        display: 'none'\n      }).attr('title', 'Focus point').data('coord', 'focus').appendTo(container);\n\n      focusCoord[0].id = id + '_jGraduate_focusCoord';\n\n      // const coords = $(idref + ' .grad_coord');\n\n      // $(container).hover(function () {\n      //   coords.animate({\n      //     opacity: 1\n      //   }, 500);\n      // }, function () {\n      //   coords.animate({\n      //     opacity: .2\n      //   }, 500);\n      // });\n\n      let showFocus;\n      $.each(['x1', 'y1', 'x2', 'y2', 'cx', 'cy', 'fx', 'fy'], function (i, attr) {\n        const isRadial = isNaN(attr[1]);\n\n        let attrval = curGradient.getAttribute(attr);\n        if (!attrval) {\n          // Set defaults\n          if (isRadial) {\n            // For radial points\n            attrval = '0.5';\n          } else {\n            // Only x2 is 1\n            attrval = attr === 'x2' ? '1.0' : '0.0';\n          }\n        }\n\n        attrInput[attr] = $('#' + id + '_jGraduate_' + attr)\n          .val(attrval)\n          .change(function () {\n            // TODO: Support values < 0 and > 1 (zoomable preview?)\n            if (isNaN(parseFloat(this.value)) || this.value < 0) {\n              this.value = 0.0;\n            } else if (this.value > 1) {\n              this.value = 1.0;\n            }\n\n            if (!(attr[0] === 'f' && !showFocus)) {\n              if ((isRadial && curType === 'radialGradient') || (!isRadial && curType === 'linearGradient')) {\n                curGradient.setAttribute(attr, this.value);\n              }\n            }\n\n            const $elem = isRadial\n              ? attr[0] === 'c' ? centerCoord : focusCoord\n              : attr[1] === '1' ? beginCoord : endCoord;\n\n            const cssName = attr.includes('x') ? 'left' : 'top';\n\n            $elem.css(cssName, this.value * MAX);\n          }).change();\n      });\n\n      function mkStop (n, color, opac, sel, stopElem) {\n        const stop = stopElem || mkElem('stop', {'stop-color': color, 'stop-opacity': opac, offset: n}, curGradient);\n        if (stopElem) {\n          color = stopElem.getAttribute('stop-color');\n          opac = stopElem.getAttribute('stop-opacity');\n          n = stopElem.getAttribute('offset');\n        } else {\n          curGradient.append(stop);\n        }\n        if (opac === null) opac = 1;\n\n        const pickerD = 'M-6.2,0.9c3.6-4,6.7-4.3,6.7-12.4c-0.2,7.9,3.1,8.8,6.5,12.4c3.5,3.8,2.9,9.6,0,12.3c-3.1,2.8-10.4,2.7-13.2,0C-9.6,9.9-9.4,4.4-6.2,0.9z';\n\n        const pathbg = mkElem('path', {\n          d: pickerD,\n          fill: 'url(#jGraduate_trans)',\n          transform: 'translate(' + (10 + n * MAX) + ', 26)'\n        }, stopGroup);\n\n        const path = mkElem('path', {\n          d: pickerD,\n          fill: color,\n          'fill-opacity': opac,\n          transform: 'translate(' + (10 + n * MAX) + ', 26)',\n          stroke: '#000',\n          'stroke-width': 1.5\n        }, stopGroup);\n\n        $(path).mousedown(function (e) {\n          selectStop(this);\n          drag = curStop;\n          $win.mousemove(dragColor).mouseup(remDrags);\n          stopOffset = stopMakerDiv.offset();\n          e.preventDefault();\n          return false;\n        }).data('stop', stop).data('bg', pathbg).dblclick(function () {\n          $('div.jGraduate_LightBox').show();\n          const colorhandle = this;\n          let stopOpacity = +stop.getAttribute('stop-opacity') || 1;\n          let stopColor = stop.getAttribute('stop-color') || 1;\n          let thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);\n          while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n          color = stopColor.substr(1) + thisAlpha;\n          $('#' + id + '_jGraduate_stopPicker').css({left: 100, bottom: 15}).jPicker({\n            window: {title: 'Pick the start color and opacity for the gradient'},\n            images: {clientPath: $settings.images.clientPath},\n            color: {active: color, alphaSupport: true}\n          }, function (color, arg2) {\n            stopColor = color.val('hex') ? ('#' + color.val('hex')) : 'none';\n            stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;\n            colorhandle.setAttribute('fill', stopColor);\n            colorhandle.setAttribute('fill-opacity', stopOpacity);\n            stop.setAttribute('stop-color', stopColor);\n            stop.setAttribute('stop-opacity', stopOpacity);\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          }, null, function () {\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          });\n        });\n\n        $(curGradient).find('stop').each(function () {\n          const curS = $(this);\n          if (+this.getAttribute('offset') > n) {\n            if (!color) {\n              const newcolor = this.getAttribute('stop-color');\n              const newopac = this.getAttribute('stop-opacity');\n              stop.setAttribute('stop-color', newcolor);\n              path.setAttribute('fill', newcolor);\n              stop.setAttribute('stop-opacity', newopac === null ? 1 : newopac);\n              path.setAttribute('fill-opacity', newopac === null ? 1 : newopac);\n            }\n            curS.before(stop);\n            return false;\n          }\n        });\n        if (sel) selectStop(path);\n        return stop;\n      }\n\n      function remStop () {\n        delStop.setAttribute('display', 'none');\n        const path = $(curStop);\n        const stop = path.data('stop');\n        const bg = path.data('bg');\n        $([curStop, stop, bg]).remove();\n      }\n\n      const stopMakerDiv = $('#' + id + '_jGraduate_StopSlider');\n\n      let stops, curStop, drag;\n\n      const delStop = mkElem('path', {\n        d: 'm9.75,-6l-19.5,19.5m0,-19.5l19.5,19.5',\n        fill: 'none',\n        stroke: '#D00',\n        'stroke-width': 5,\n        display: 'none'\n      }, undefined); // stopMakerSVG);\n\n      function selectStop (item) {\n        if (curStop) curStop.setAttribute('stroke', '#000');\n        item.setAttribute('stroke', 'blue');\n        curStop = item;\n        curStop.parentNode.append(curStop);\n        //   stops = $('stop');\n        //   opac_select.val(curStop.attr('fill-opacity') || 1);\n        //   root.append(delStop);\n      }\n\n      let stopOffset;\n\n      function remDrags () {\n        $win.unbind('mousemove', dragColor);\n        if (delStop.getAttribute('display') !== 'none') {\n          remStop();\n        }\n        drag = null;\n      }\n\n      let scaleX = 1, scaleY = 1, angle = 0;\n\n      let cX = cx;\n      let cY = cy;\n      function xform () {\n        const rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';\n        if (scaleX === 1 && scaleY === 1) {\n          curGradient.removeAttribute('gradientTransform');\n          // $('#ang').addClass('dis');\n        } else {\n          const x = -cX * (scaleX - 1);\n          const y = -cY * (scaleY - 1);\n          curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')');\n          // $('#ang').removeClass('dis');\n        }\n      }\n\n      function dragColor (evt) {\n        let x = evt.pageX - stopOffset.left;\n        const y = evt.pageY - stopOffset.top;\n        x = x < 10\n          ? 10\n          : x > MAX + 10\n            ? MAX + 10\n            : x;\n\n        const xfStr = 'translate(' + x + ', 26)';\n        if (y < -60 || y > 130) {\n          delStop.setAttribute('display', 'block');\n          delStop.setAttribute('transform', xfStr);\n        } else {\n          delStop.setAttribute('display', 'none');\n        }\n\n        drag.setAttribute('transform', xfStr);\n        $.data(drag, 'bg').setAttribute('transform', xfStr);\n        const stop = $.data(drag, 'stop');\n        const sX = (x - 10) / MAX;\n\n        stop.setAttribute('offset', sX);\n\n        let last = 0;\n        $(curGradient).find('stop').each(function (i) {\n          const cur = this.getAttribute('offset');\n          const t = $(this);\n          if (cur < last) {\n            t.prev().before(t);\n            stops = $(curGradient).find('stop');\n          }\n          last = cur;\n        });\n      }\n\n      const stopMakerSVG = mkElem('svg', {\n        width: '100%',\n        height: 45\n      }, stopMakerDiv[0]);\n\n      const transPattern = mkElem('pattern', {\n        width: 16,\n        height: 16,\n        patternUnits: 'userSpaceOnUse',\n        id: 'jGraduate_trans'\n      }, stopMakerSVG);\n\n      const transImg = mkElem('image', {\n        width: 16,\n        height: 16\n      }, transPattern);\n\n      const bgImage = $settings.images.clientPath + 'map-opacity.png';\n\n      transImg.setAttributeNS(ns.xlink, 'xlink:href', bgImage);\n\n      $(stopMakerSVG).click(function (evt) {\n        stopOffset = stopMakerDiv.offset();\n        const {target} = evt;\n        if (target.tagName === 'path') return;\n        let x = evt.pageX - stopOffset.left - 8;\n        x = x < 10 ? 10 : x > MAX + 10 ? MAX + 10 : x;\n        mkStop(x / MAX, 0, 0, true);\n        evt.stopPropagation();\n      });\n\n      $(stopMakerSVG).mouseover(function () {\n        stopMakerSVG.append(delStop);\n      });\n\n      stopGroup = mkElem('g', {}, stopMakerSVG);\n\n      mkElem('line', {\n        x1: 10,\n        y1: 15,\n        x2: MAX + 10,\n        y2: 15,\n        'stroke-width': 2,\n        stroke: '#000'\n      }, stopMakerSVG);\n\n      const spreadMethodOpt = gradPicker.find('.jGraduate_spreadMethod').change(function () {\n        curGradient.setAttribute('spreadMethod', $(this).val());\n      });\n\n      // handle dragging the stop around the swatch\n      let draggingCoord = null;\n\n      const onCoordDrag = function (evt) {\n        let x = evt.pageX - offset.left;\n        let y = evt.pageY - offset.top;\n\n        // clamp stop to the swatch\n        x = x < 0 ? 0 : x > MAX ? MAX : x;\n        y = y < 0 ? 0 : y > MAX ? MAX : y;\n\n        draggingCoord.css('left', x).css('top', y);\n\n        // calculate stop offset\n        const fracx = x / SIZEX;\n        const fracy = y / SIZEY;\n\n        const type = draggingCoord.data('coord');\n        const grad = curGradient;\n\n        switch (type) {\n        case 'start':\n          attrInput.x1.val(fracx);\n          attrInput.y1.val(fracy);\n          grad.setAttribute('x1', fracx);\n          grad.setAttribute('y1', fracy);\n          break;\n        case 'end':\n          attrInput.x2.val(fracx);\n          attrInput.y2.val(fracy);\n          grad.setAttribute('x2', fracx);\n          grad.setAttribute('y2', fracy);\n          break;\n        case 'center':\n          attrInput.cx.val(fracx);\n          attrInput.cy.val(fracy);\n          grad.setAttribute('cx', fracx);\n          grad.setAttribute('cy', fracy);\n          cX = fracx;\n          cY = fracy;\n          xform();\n          break;\n        case 'focus':\n          attrInput.fx.val(fracx);\n          attrInput.fy.val(fracy);\n          grad.setAttribute('fx', fracx);\n          grad.setAttribute('fy', fracy);\n          xform();\n        }\n\n        evt.preventDefault();\n      };\n\n      const onCoordUp = function () {\n        draggingCoord = null;\n        $win.unbind('mousemove', onCoordDrag).unbind('mouseup', onCoordUp);\n      };\n\n      // Linear gradient\n      // (function () {\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n\n      let numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      for (let i = 0; i < numstops; i++) {\n        mkStop(0, 0, 0, 0, stops[i]);\n      }\n\n      spreadMethodOpt.val(curGradient.getAttribute('spreadMethod') || 'pad');\n\n      let offset;\n\n      // No match, so show focus point\n      showFocus = false;\n\n      previewRect.setAttribute('fill-opacity', gradalpha / 100);\n\n      $('#' + id + ' div.grad_coord').mousedown(function (evt) {\n        evt.preventDefault();\n        draggingCoord = $(this);\n        // const sPos = draggingCoord.offset();\n        offset = draggingCoord.parent().offset();\n        $win.mousemove(onCoordDrag).mouseup(onCoordUp);\n      });\n\n      // bind GUI elements\n      $('#' + id + '_jGraduate_Ok').bind('click', function () {\n        $this.paint.type = curType;\n        $this.paint[curType] = curGradient.cloneNode(true);\n        $this.paint.solidColor = null;\n        okClicked();\n      });\n      $('#' + id + '_jGraduate_Cancel').bind('click', function (paint) {\n        cancelClicked();\n      });\n\n      if (curType === 'radialGradient') {\n        if (showFocus) {\n          focusCoord.show();\n        } else {\n          focusCoord.hide();\n          attrInput.fx.val('');\n          attrInput.fy.val('');\n        }\n      }\n\n      $('#' + id + '_jGraduate_match_ctr')[0].checked = !showFocus;\n\n      let lastfx, lastfy;\n\n      $('#' + id + '_jGraduate_match_ctr').change(function () {\n        showFocus = !this.checked;\n        focusCoord.toggle(showFocus);\n        attrInput.fx.val('');\n        attrInput.fy.val('');\n        const grad = curGradient;\n        if (!showFocus) {\n          lastfx = grad.getAttribute('fx');\n          lastfy = grad.getAttribute('fy');\n          grad.removeAttribute('fx');\n          grad.removeAttribute('fy');\n        } else {\n          const fx = lastfx || 0.5;\n          const fy = lastfy || 0.5;\n          grad.setAttribute('fx', fx);\n          grad.setAttribute('fy', fy);\n          attrInput.fx.val(fx);\n          attrInput.fy.val(fy);\n        }\n      });\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      let slider;\n\n      const setSlider = function (e) {\n        const {offset} = slider;\n        const div = slider.parent;\n        let x = (e.pageX - offset.left - parseInt(div.css('border-left-width')));\n        if (x > SLIDERW) x = SLIDERW;\n        if (x <= 0) x = 0;\n        const posx = x - 5;\n        x /= SLIDERW;\n\n        switch (slider.type) {\n        case 'radius':\n          x = Math.pow(x * 2, 2.5);\n          if (x > 0.98 && x < 1.02) x = 1;\n          if (x <= 0.01) x = 0.01;\n          curGradient.setAttribute('r', x);\n          break;\n        case 'opacity':\n          $this.paint.alpha = parseInt(x * 100);\n          previewRect.setAttribute('fill-opacity', x);\n          break;\n        case 'ellip':\n          scaleX = 1;\n          scaleY = 1;\n          if (x < 0.5) {\n            x /= 0.5; // 0.001\n            scaleX = x <= 0 ? 0.01 : x;\n          } else if (x > 0.5) {\n            x /= 0.5; // 2\n            x = 2 - x;\n            scaleY = x <= 0 ? 0.01 : x;\n          }\n          xform();\n          x -= 1;\n          if (scaleY === x + 1) {\n            x = Math.abs(x);\n          }\n          break;\n        case 'angle':\n          x = x - 0.5;\n          angle = x *= 180;\n          xform();\n          x /= 100;\n          break;\n        }\n        slider.elem.css({'margin-left': posx});\n        x = Math.round(x * 100);\n        slider.input.val(x);\n      };\n\n      let ellipVal = 0, angleVal = 0;\n\n      if (curType === 'radialGradient') {\n        const tlist = curGradient.gradientTransform.baseVal;\n        if (tlist.numberOfItems === 2) {\n          const t = tlist.getItem(0);\n          const s = tlist.getItem(1);\n          if (t.type === 2 && s.type === 3) {\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        } else if (tlist.numberOfItems === 3) {\n          // Assume [R][T][S]\n          const r = tlist.getItem(0);\n          const t = tlist.getItem(1);\n          const s = tlist.getItem(2);\n\n          if (r.type === 4 &&\n            t.type === 2 &&\n            s.type === 3\n          ) {\n            angleVal = Math.round(r.angle);\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        }\n      }\n\n      const sliders = {\n        radius: {\n          handle: '#' + id + '_jGraduate_RadiusArrows',\n          input: '#' + id + '_jGraduate_RadiusInput',\n          val: (curGradient.getAttribute('r') || 0.5) * 100\n        },\n        opacity: {\n          handle: '#' + id + '_jGraduate_OpacArrows',\n          input: '#' + id + '_jGraduate_OpacInput',\n          val: $this.paint.alpha || 100\n        },\n        ellip: {\n          handle: '#' + id + '_jGraduate_EllipArrows',\n          input: '#' + id + '_jGraduate_EllipInput',\n          val: ellipVal\n        },\n        angle: {\n          handle: '#' + id + '_jGraduate_AngleArrows',\n          input: '#' + id + '_jGraduate_AngleInput',\n          val: angleVal\n        }\n      };\n\n      $.each(sliders, function (type, data) {\n        const handle = $(data.handle);\n        handle.mousedown(function (evt) {\n          const parent = handle.parent();\n          slider = {\n            type,\n            elem: handle,\n            input: $(data.input),\n            parent,\n            offset: parent.offset()\n          };\n          $win.mousemove(dragSlider).mouseup(stopSlider);\n          evt.preventDefault();\n        });\n\n        $(data.input).val(data.val).change(function () {\n          const isRad = curType === 'radialGradient';\n          let val = +this.value;\n          let xpos = 0;\n          switch (type) {\n          case 'radius':\n            if (isRad) curGradient.setAttribute('r', val / 100);\n            xpos = (Math.pow(val / 100, 1 / 2.5) / 2) * SLIDERW;\n            break;\n\n          case 'opacity':\n            $this.paint.alpha = val;\n            previewRect.setAttribute('fill-opacity', val / 100);\n            xpos = val * (SLIDERW / 100);\n            break;\n\n          case 'ellip':\n            scaleX = scaleY = 1;\n            if (val === 0) {\n              xpos = SLIDERW * 0.5;\n              break;\n            }\n            if (val > 99.5) val = 99.5;\n            if (val > 0) {\n              scaleY = 1 - (val / 100);\n            } else {\n              scaleX = -(val / 100) - 1;\n            }\n\n            xpos = SLIDERW * ((val + 100) / 2) / 100;\n            if (isRad) xform();\n            break;\n\n          case 'angle':\n            angle = val;\n            xpos = angle / 180;\n            xpos += 0.5;\n            xpos *= SLIDERW;\n            if (isRad) xform();\n          }\n          if (xpos > SLIDERW) {\n            xpos = SLIDERW;\n          } else if (xpos < 0) {\n            xpos = 0;\n          }\n          handle.css({'margin-left': xpos - 5});\n        }).change();\n      });\n\n      const dragSlider = function (evt) {\n        setSlider(evt);\n        evt.preventDefault();\n      };\n\n      const stopSlider = function (evt) {\n        $win.unbind('mousemove', dragSlider).unbind('mouseup', stopSlider);\n        slider = null;\n      };\n\n      // --------------\n      let thisAlpha = ($this.paint.alpha * 255 / 100).toString(16);\n      while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n      thisAlpha = thisAlpha.split('.')[0];\n      color = $this.paint.solidColor === 'none' ? '' : $this.paint.solidColor + thisAlpha;\n\n      if (!isSolid) {\n        color = stops[0].getAttribute('stop-color');\n      }\n\n      // This should be done somewhere else, probably\n      $.extend($.fn.jPicker.defaults.window, {\n        alphaSupport: true, effects: {type: 'show', speed: 0}\n      });\n\n      colPicker.jPicker(\n        {\n          window: {title: $settings.window.pickerTitle},\n          images: {clientPath: $settings.images.clientPath},\n          color: {active: color, alphaSupport: true}\n        },\n        function (color) {\n          $this.paint.type = 'solidColor';\n          $this.paint.alpha = color.val('ahex') ? Math.round((color.val('a') / 255) * 100) : 100;\n          $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';\n          $this.paint.radialGradient = null;\n          okClicked();\n        },\n        null,\n        function () { cancelClicked(); }\n      );\n\n      const tabs = $(idref + ' .jGraduate_tabs li');\n      tabs.click(function () {\n        tabs.removeClass('jGraduate_tab_current');\n        $(this).addClass('jGraduate_tab_current');\n        $(idref + ' > div').hide();\n        const type = $(this).attr('data-type');\n        /* const container = */ $(idref + ' .jGraduate_gradPick').show();\n        if (type === 'rg' || type === 'lg') {\n          // Show/hide appropriate fields\n          $('.jGraduate_' + type + '_field').show();\n          $('.jGraduate_' + (type === 'lg' ? 'rg' : 'lg') + '_field').hide();\n\n          $('#' + id + '_jgraduate_rect')[0].setAttribute('fill', 'url(#' + id + '_' + type + '_jgraduate_grad)');\n\n          // Copy stops\n\n          curType = type === 'lg' ? 'linearGradient' : 'radialGradient';\n\n          $('#' + id + '_jGraduate_OpacInput').val($this.paint.alpha).change();\n\n          const newGrad = $('#' + id + '_' + type + '_jgraduate_grad')[0];\n\n          if (curGradient !== newGrad) {\n            const curStops = $(curGradient).find('stop');\n            $(newGrad).empty().append(curStops);\n            curGradient = newGrad;\n            const sm = spreadMethodOpt.val();\n            curGradient.setAttribute('spreadMethod', sm);\n          }\n          showFocus = type === 'rg' && curGradient.getAttribute('fx') != null && !(cx === fx && cy === fy);\n          $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);\n          if (showFocus) {\n            $('#' + id + '_jGraduate_match_ctr')[0].checked = false;\n          }\n        } else {\n          $(idref + ' .jGraduate_gradPick').hide();\n          $(idref + ' .jGraduate_colPick').show();\n        }\n      });\n      $(idref + ' > div').hide();\n      tabs.removeClass('jGraduate_tab_current');\n      let tab;\n      switch ($this.paint.type) {\n      case 'linearGradient':\n        tab = $(idref + ' .jGraduate_tab_lingrad');\n        break;\n      case 'radialGradient':\n        tab = $(idref + ' .jGraduate_tab_radgrad');\n        break;\n      default:\n        tab = $(idref + ' .jGraduate_tab_color');\n        break;\n      }\n      $this.show();\n\n      // jPicker will try to show after a 0ms timeout, so need to fire this after that\n      setTimeout(() => {\n        tab.addClass('jGraduate_tab_current').click();\n      }, 10);\n    });\n  };\n  return $;\n}\n","/**\n * SpinButton control\n *\n * Adds bells and whistles to any ordinary textbox to\n * make it look and feel like a SpinButton Control.\n *\n * Supplies {@link external:jQuery.fn.SpinButton} (and also {@link external:jQuery.loadingStylesheets})\n *\n * Originally written by George Adamson, Software Unity (george.jquery@softwareunity.com) August 2006.\n * - Added min/max options\n * - Added step size option\n * - Added bigStep (page up/down) option\n *\n * Modifications made by Mark Gibson, (mgibson@designlinks.net) September 2006:\n * - Converted to jQuery plugin\n * - Allow limited or unlimited min/max values\n * - Allow custom class names, and add class to input element\n * - Removed global vars\n * - Reset (to original or through config) when invalid value entered\n * - Repeat whilst holding mouse button down (with initial pause, like keyboard repeat)\n * - Support mouse wheel in Firefox\n * - Fix double click in IE\n * - Refactored some code and renamed some vars\n *\n * Modifications by Jeff Schiller, June 2009:\n * - provide callback function for when the value changes based on the following\n *   {@link https://www.mail-archive.com/jquery-en@googlegroups.com/msg36070.html}\n *\n * Modifications by Jeff Schiller, July 2009:\n * - improve styling for widget in Opera\n * - consistent key-repeat handling cross-browser\n *\n * Modifications by Alexis Deveria, October 2009:\n * - provide \"stepfunc\" callback option to allow custom function to run when changing a value\n * - Made adjustValue(0) only run on certain keyup events, not all.\n *\n * Tested in IE6, Opera9, Firefox 1.5\n *\n * | Version | Date | Author | Notes\n * |---------|------|--------|------|\n * | v1.0 | 11 Aug 2006 | George Adamson | First release\n * | v1.1 | Aug 2006 | George Adamson | Minor enhancements\n * | v1.2 | 27 Sep 2006 | Mark Gibson | Major enhancements\n * | v1.3a | 28 Sep 2006 | George Adamson | Minor enhancements\n * | v1.4 | 18 Jun 2009 | Jeff Schiller | Added callback function\n * | v1.5 | 06 Jul 2009 | Jeff Schiller | Fixes for Opera.\n * | v1.6 | 13 Oct 2009 | Alexis Deveria | Added stepfunc function\n * | v1.7 | 21 Oct 2009 | Alexis Deveria | Minor fixes.<br />Fast-repeat for keys and live updating as you type.\n * | v1.8 | 12 Jan 2010 | Benjamin Thomas | Fixes for mouseout behavior.<br />Added smallStep\n * | v1.9 | 20 May 2018 | Brett Zamir | Avoid SVGEdit dependency via `stateObj` config;<br />convert to ES6 module |\n * @module jQuerySpinButton\n * @example\n\n  // Create group of settings to initialise spinbutton(s). (Optional)\n  const myOptions = {\n    min: 0, // Set lower limit.\n    max: 100, // Set upper limit.\n    step: 1, // Set increment size.\n    smallStep: 0.5, // Set shift-click increment size.\n    stateObj: {tool_scale: 1}, // Object to allow passing in live-updating scale\n    spinClass: mySpinBtnClass, // CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n    upClass: mySpinUpClass, // CSS class for style when mouse over up button.\n    downClass: mySpinDnClass // CSS class for style when mouse over down button.\n  };\n\n  $(function () {\n    // Initialise INPUT element(s) as SpinButtons: (passing options if desired)\n    $(\"#myInputElement\").SpinButton(myOptions);\n  });\n */\n/**\n * @function module:jQuerySpinButton.jQuerySpinButton\n * @param {external:jQuery} $ The jQuery object to which to add the plug-in\n * @returns {external:jQuery}\n*/\nexport default function ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'spinbtn/jQuery.SpinButton.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @callback module:jQuerySpinButton.StepCallback\n  * @param {external:jQuery} thisArg Value of `this`\n  */\n  /**\n  * @callback module:jQuerySpinButton.ValueCallback\n  * @param {external:jQuery} thisArg Value of `this`\n  * @param {Float} value Value that was changed\n  */\n  /**\n   * @typedef {PlainObject} module:jQuerySpinButton.SpinButtonConfig\n   * @property {Float} min Set lower limit\n   * @property {Float} max Set upper limit.\n   * @property {Float} step Set increment size.\n   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust\n   * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)\n   * @property {Float} smallStep Set shift-click increment size.\n   * @property {PlainObject} stateObj Object to allow passing in live-updating scale\n   * @property {Float} stateObj.tool_scale\n   * @property {string} spinClass CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n   * @property {string} upClass CSS class for style when mouse over up button.\n   * @property {string} downClass CSS class for style when mouse over down button.\n   * @property {Float} page Value to be adjusted on page up/page down\n   * @property {Float} reset Reset value when invalid value entered\n   * @property {Float} delay Millisecond delay\n   * @property {Float} interval Millisecond interval\n  */\n  /**\n  * @function external:jQuery.fn.SpinButton\n  * @param {module:jQuerySpinButton.SpinButtonConfig} cfg\n  * @returns {external:jQuery}\n  */\n  $.fn.SpinButton = function (cfg) {\n    cfg = cfg || {};\n    function coord (el, prop) {\n      const b = document.body;\n\n      let c = el[prop];\n      while ((el = el.offsetParent) && (el !== b)) {\n        if (!$.browser.msie || (el.currentStyle.position !== 'relative')) {\n          c += el[prop];\n        }\n      }\n\n      return c;\n    }\n\n    return this.each(function () {\n      this.repeating = false;\n\n      // Apply specified options or defaults:\n      // (Ought to refactor this some day to use $.extend() instead)\n      this.spinCfg = {\n        // min: cfg.min ? Number(cfg.min) : null,\n        // max: cfg.max ? Number(cfg.max) : null,\n        min: !isNaN(parseFloat(cfg.min)) ? Number(cfg.min) : null, // Fixes bug with min:0\n        max: !isNaN(parseFloat(cfg.max)) ? Number(cfg.max) : null,\n        step: cfg.step ? Number(cfg.step) : 1,\n        stepfunc: cfg.stepfunc || false,\n        page: cfg.page ? Number(cfg.page) : 10,\n        upClass: cfg.upClass || 'up',\n        downClass: cfg.downClass || 'down',\n        reset: cfg.reset || this.value,\n        delay: cfg.delay ? Number(cfg.delay) : 500,\n        interval: cfg.interval ? Number(cfg.interval) : 100,\n        _btn_width: 20,\n        _direction: null,\n        _delay: null,\n        _repeat: null,\n        callback: cfg.callback || null\n      };\n\n      // if a smallStep isn't supplied, use half the regular step\n      this.spinCfg.smallStep = cfg.smallStep || this.spinCfg.step / 2;\n\n      this.adjustValue = function (i) {\n        let v;\n        if (isNaN(this.value)) {\n          v = this.spinCfg.reset;\n        } else if (typeof this.spinCfg.stepfunc === 'function') {\n          v = this.spinCfg.stepfunc(this, i);\n        } else {\n          // weirdest JavaScript bug ever: 5.1 + 0.1 = 5.199999999\n          v = Number((Number(this.value) + Number(i)).toFixed(5));\n        }\n        if (this.spinCfg.min !== null) { v = Math.max(v, this.spinCfg.min); }\n        if (this.spinCfg.max !== null) { v = Math.min(v, this.spinCfg.max); }\n        this.value = v;\n        if (typeof this.spinCfg.callback === 'function') { this.spinCfg.callback(this); }\n      };\n\n      $(this)\n        .addClass(cfg.spinClass || 'spin-button')\n\n        .mousemove(function (e) {\n          // Determine which button mouse is over, or not (spin direction):\n          const x = e.pageX || e.x;\n          const y = e.pageY || e.y;\n          const el = e.target;\n          const scale = cfg.stateObj.tool_scale || 1;\n          const height = $(el).height() / 2;\n\n          const direction =\n            (x > coord(el, 'offsetLeft') +\n              el.offsetWidth * scale - this.spinCfg._btn_width)\n              ? ((y < coord(el, 'offsetTop') + height * scale) ? 1 : -1) : 0;\n\n          if (direction !== this.spinCfg._direction) {\n            // Style up/down buttons:\n            switch (direction) {\n            case 1: // Up arrow:\n              $(this).removeClass(this.spinCfg.downClass).addClass(this.spinCfg.upClass);\n              break;\n            case -1: // Down arrow:\n              $(this).removeClass(this.spinCfg.upClass).addClass(this.spinCfg.downClass);\n              break;\n            default: // Mouse is elsewhere in the textbox\n              $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n            }\n\n            // Set spin direction:\n            this.spinCfg._direction = direction;\n          }\n        })\n\n        .mouseout(function () {\n          // Reset up/down buttons to their normal appearance when mouse moves away:\n          $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n          this.spinCfg._direction = null;\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .mousedown(function (e) {\n          if (e.button === 0 && this.spinCfg._direction !== 0) {\n            // Respond to click on one of the buttons:\n            const stepSize = e.shiftKey ? this.spinCfg.smallStep : this.spinCfg.step;\n\n            const adjust = () => {\n              this.adjustValue(this.spinCfg._direction * stepSize);\n            };\n\n            adjust();\n\n            // Initial delay before repeating adjustment\n            this.spinCfg._delay = window.setTimeout(() => {\n              adjust();\n              // Repeat adjust at regular intervals\n              this.spinCfg._repeat = window.setInterval(adjust, this.spinCfg.interval);\n            }, this.spinCfg.delay);\n          }\n        })\n\n        .mouseup(function (e) {\n          // Cancel repeating adjustment\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .dblclick(function (e) {\n          if ($.browser.msie) {\n            this.adjustValue(this.spinCfg._direction * this.spinCfg.step);\n          }\n        })\n\n        .keydown(function (e) {\n          // Respond to up/down arrow keys.\n          switch (e.keyCode) {\n          case 38: this.adjustValue(this.spinCfg.step); break; // Up\n          case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n          case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n          case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n          }\n        })\n\n        /*\n        http://unixpapa.com/js/key.html describes the current state-of-affairs for\n        key repeat events:\n        - Safari 3.1 changed their model so that keydown is reliably repeated going forward\n        - Firefox and Opera still only repeat the keypress event, not the keydown\n        */\n        .keypress(function (e) {\n          if (this.repeating) {\n            // Respond to up/down arrow keys.\n            switch (e.keyCode) {\n            case 38: this.adjustValue(this.spinCfg.step); break; // Up\n            case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n            case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n            case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n            }\n          // we always ignore the first keypress event (use the keydown instead)\n          } else {\n            this.repeating = true;\n          }\n        })\n\n        // clear the 'repeating' flag\n        .keyup(function (e) {\n          this.repeating = false;\n          switch (e.keyCode) {\n          case 38: // Up\n          case 40: // Down\n          case 33: // PageUp\n          case 34: // PageDown\n          case 13: this.adjustValue(0); break; // Enter/Return\n          }\n        })\n\n        .bind('mousewheel', function (e) {\n          // Respond to mouse wheel in IE. (It returns up/dn motion in multiples of 120)\n          if (e.wheelDelta >= 120) {\n            this.adjustValue(this.spinCfg.step);\n          } else if (e.wheelDelta <= -120) {\n            this.adjustValue(-this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        })\n\n        .change(function (e) {\n          this.adjustValue(0);\n        });\n\n      if (this.addEventListener) {\n        // Respond to mouse wheel in Firefox\n        this.addEventListener('DOMMouseScroll', function (e) {\n          if (e.detail > 0) {\n            this.adjustValue(-this.spinCfg.step);\n          } else if (e.detail < 0) {\n            this.adjustValue(this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        });\n      }\n    });\n  };\n  return $;\n}\n","/**\n * jQuery Context Menu Plugin\n * Cory S.N. LaViska\n * A Beautiful Site ({@link https://abeautifulsite.net/})\n * Modified by Alexis Deveria\n *\n * More info: {@link https://abeautifulsite.net/2008/09/jquery-context-menu-plugin/}\n *\n * @module jQueryContextMenu\n * @todo Update to latest version and adapt (and needs jQuery update as well): {@link https://github.com/swisnl/jQuery-contextMenu}\n * @version 1.01\n *\n * @license\n * Terms of Use\n *\n * This plugin is dual-licensed under the GNU General Public License\n *   and the MIT License and is copyright A Beautiful Site, LLC.\n *\n*/\nimport {isMac} from '../browser.js';\n\n/**\n* @callback module:jQueryContextMenu.jQueryContextMenuCallback\n* @param {string} href The `href` value after the first character (for bypassing an initial `#`)\n* @param {external:jQuery} srcElement The wrapped jQuery srcElement\n* @param {{x: Float, y: Float, docX: Float, docY: Float}} coords\n*/\n\n/**\n* @typedef {PlainObject} module:jQueryContextMenu.jQueryContextMenuConfig\n* @property {string} menu\n* @property {Float} inSpeed\n* @property {Float} outSpeed\n* @property {boolean} allowLeft\n*/\n\n/**\n* Adds {@link external:jQuery.fn.contextMenu},\n* {@link external:jQuery.fn.disableContextMenuItems},\n* {@link external:jQuery.fn.enableContextMenuItems},\n* {@link external:jQuery.fn.disableContextMenu},\n* {@link external:jQuery.fn.enableContextMenu},\n* {@link external:jQuery.fn.destroyContextMenu}.\n* @function module:jQueryContextMenu.jQueryContextMenu\n* @param {external:jQuery} $ The jQuery object to wrap (with `contextMenu`, `disableContextMenuItems`, `enableContextMenuItems`, `disableContextMenu`, `enableContextMenu`, `destroyContextMenu`)\n* @returns {external:jQuery}\n*/\nfunction jQueryContextMenu ($) {\n  const win = $(window);\n  const doc = $(document);\n\n  $.extend($.fn, {\n    /**\n    * @memberof external:jQuery.fn\n    * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o\n    * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback\n    * @returns {external:jQuery}\n    */\n    contextMenu (o, callback) {\n      // Defaults\n      if (o.menu === undefined) return false;\n      if (o.inSpeed === undefined) o.inSpeed = 150;\n      if (o.outSpeed === undefined) o.outSpeed = 75;\n      // 0 needs to be -1 for expected results (no fade)\n      if (o.inSpeed === 0) o.inSpeed = -1;\n      if (o.outSpeed === 0) o.outSpeed = -1;\n      // Loop each context menu\n      $(this).each(function () {\n        const el = $(this);\n        const offset = $(el).offset();\n\n        const menu = $('#' + o.menu);\n\n        // Add contextMenu class\n        menu.addClass('contextMenu');\n        // Simulate a true right click\n        $(this).bind('mousedown', function (e) {\n          const evt = e;\n          $(this).mouseup(function (e) {\n            const srcElement = $(this);\n            srcElement.unbind('mouseup');\n            if (evt.button === 2 || o.allowLeft ||\n              (evt.ctrlKey && isMac())) {\n              e.stopPropagation();\n              // Hide context menus that may be showing\n              $('.contextMenu').hide();\n              // Get this context menu\n\n              if (el.hasClass('disabled')) return false;\n\n              // Detect mouse position\n              let x = e.pageX, y = e.pageY;\n\n              const xOff = win.width() - menu.width(),\n                yOff = win.height() - menu.height();\n\n              if (x > xOff - 15) x = xOff - 15;\n              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF\n\n              // Show the menu\n              doc.unbind('click');\n              menu.css({top: y, left: x}).fadeIn(o.inSpeed);\n              // Hover events\n              menu.find('A').mouseover(function () {\n                menu.find('LI.hover').removeClass('hover');\n                $(this).parent().addClass('hover');\n              }).mouseout(function () {\n                menu.find('LI.hover').removeClass('hover');\n              });\n\n              // Keyboard\n              doc.keypress(function (e) {\n                switch (e.keyCode) {\n                case 38: // up\n                  if (!menu.find('LI.hover').length) {\n                    menu.find('LI:last').addClass('hover');\n                  } else {\n                    menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');\n                    if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');\n                  }\n                  break;\n                case 40: // down\n                  if (!menu.find('LI.hover').length) {\n                    menu.find('LI:first').addClass('hover');\n                  } else {\n                    menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');\n                    if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');\n                  }\n                  break;\n                case 13: // enter\n                  menu.find('LI.hover A').trigger('click');\n                  break;\n                case 27: // esc\n                  doc.trigger('click');\n                  break;\n                }\n              });\n\n              // When items are selected\n              menu.find('A').unbind('mouseup');\n              menu.find('LI:not(.disabled) A').mouseup(function () {\n                doc.unbind('click').unbind('keypress');\n                $('.contextMenu').hide();\n                // Callback\n                if (callback) {\n                  callback($(this).attr('href').substr(1), $(srcElement), {x: x - offset.left, y: y - offset.top, docX: x, docY: y});\n                }\n                return false;\n              });\n\n              // Hide bindings\n              setTimeout(function () { // Delay for Mozilla\n                doc.click(function () {\n                  doc.unbind('click').unbind('keypress');\n                  menu.fadeOut(o.outSpeed);\n                  return false;\n                });\n              }, 0);\n            }\n          });\n        });\n\n        // Disable text selection\n        if ($.browser.mozilla) {\n          $('#' + o.menu).each(function () { $(this).css({MozUserSelect: 'none'}); });\n        } else if ($.browser.msie) {\n          $('#' + o.menu).each(function () { $(this).bind('selectstart.disableTextSelect', function () { return false; }); });\n        } else {\n          $('#' + o.menu).each(function () { $(this).bind('mousedown.disableTextSelect', function () { return false; }); });\n        }\n        // Disable browser context menu (requires both selectors to work in IE/Safari + FF/Chrome)\n        $(el).add($('UL.contextMenu')).bind('contextmenu', function () { return false; });\n      });\n      return $(this);\n    },\n\n    /**\n    * Disable context menu items on the fly.\n    * @memberof external:jQuery.fn\n    * @param {undefined|string} o Comma-separated\n    * @returns {external:jQuery}\n    */\n    disableContextMenuItems (o) {\n      if (o === undefined) {\n        // Disable all\n        $(this).find('LI').addClass('disabled');\n        return $(this);\n      }\n      $(this).each(function () {\n        if (o !== undefined) {\n          const d = o.split(',');\n          for (let i = 0; i < d.length; i++) {\n            $(this).find('A[href=\"' + d[i] + '\"]').parent().addClass('disabled');\n          }\n        }\n      });\n      return $(this);\n    },\n\n    /**\n    * Enable context menu items on the fly.\n    * @memberof external:jQuery.fn\n    * @param {undefined|string} o Comma-separated\n    * @returns {external:jQuery}\n    */\n    enableContextMenuItems (o) {\n      if (o === undefined) {\n        // Enable all\n        $(this).find('LI.disabled').removeClass('disabled');\n        return $(this);\n      }\n      $(this).each(function () {\n        if (o !== undefined) {\n          const d = o.split(',');\n          for (let i = 0; i < d.length; i++) {\n            $(this).find('A[href=\"' + d[i] + '\"]').parent().removeClass('disabled');\n          }\n        }\n      });\n      return $(this);\n    },\n\n    /**\n    * Disable context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    disableContextMenu () {\n      $(this).each(function () {\n        $(this).addClass('disabled');\n      });\n      return $(this);\n    },\n\n    /**\n    * Enable context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    enableContextMenu () {\n      $(this).each(function () {\n        $(this).removeClass('disabled');\n      });\n      return $(this);\n    },\n\n    /**\n    * Destroy context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    destroyContextMenu () {\n      // Destroy specified context menus\n      $(this).each(function () {\n        // Disable action\n        $(this).unbind('mousedown').unbind('mouseup');\n      });\n      return $(this);\n    }\n  });\n  return $;\n}\n\nexport default jQueryContextMenu;\n","/**\n * jPicker (Adapted from version 1.1.6)\n *\n * jQuery Plugin for Photoshop style color picker\n *\n * @module jPicker\n * @copyright (c) 2010 Christopher T. Tillman\n * Digital Magic Productions, Inc. ({@link http://www.digitalmagicpro.com/})\n * FREE to use, alter, copy, sell, and especially ENHANCE\n * @license MIT\n *\n * Painstakingly ported from John Dyers' excellent work on his own color picker based on the Prototype framework.\n *\n * John Dyers' website: {@link http://johndyer.name}\n * Color Picker page: {@link http://johndyer.name/photoshop-like-javascript-color-picker/}\n */\n\n/**\n* @external Math\n*/\n/**\n* @memberof external:Math\n* @param {Float} value\n* @param {Float} precision\n* @returns {Float}\n*/\nfunction toFixedNumeric (value, precision) {\n  if (precision === undefined) precision = 0;\n  return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);\n}\n\n/**\n* @function module:jPicker.jPicker\n* @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})\n* @returns {external:jQuery}\n*/\nconst jPicker = function ($) {\n  if (!$.loadingStylesheets) {\n    /**\n    * @name loadingStylesheets\n    * @type {string[]}\n    * @memberof external:jQuery\n    */\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jPicker.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @typedef {PlainObject} module:jPicker.SliderOptions\n  * @property {external:jQuery|PlainObject} arrow\n  * @property {string} arrow.image Not in use?\n  * @property {Float} arrow.width\n  * @property {Float} arrow.height\n  * @property {PlainObject} map\n  * @property {Float} map.width\n  * @property {Float} map.height\n  */\n\n  /**\n  * Encapsulate slider functionality for the ColorMap and ColorBar -\n  * could be useful to use a jQuery UI draggable for this with certain extensions.\n  * @param {external:jQuery} bar\n  * @param {module:jPicker.SliderOptions} options\n  * @returns {undefined}\n  */\n  class Slider {\n    constructor (bar, options) {\n      const $this = this;\n      function fireChangeEvents (context) {\n        for (let i = 0; i < changeEvents.length; i++) {\n          changeEvents[i].call($this, $this, context);\n        }\n      }\n      // bind the mousedown to the bar not the arrow for quick snapping to the clicked location\n      function mouseDown (e) {\n        const off = bar.offset();\n        offset = {l: off.left | 0, t: off.top | 0};\n        clearTimeout(timeout);\n        // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call($this, e);\n        }, 0);\n        // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing\n        $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);\n        e.preventDefault(); // don't try to select anything or drag the image to the desktop\n      }\n      // set the values as the mouse moves\n      function mouseMove (e) {\n        clearTimeout(timeout);\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call($this, e);\n        }, 0);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      // unbind the document events - they aren't needed when not dragging\n      function mouseUp (e) {\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      // calculate mouse position and set value within the current range\n      function setValuesFromMousePosition (e) {\n        const barW = bar.w, // local copies for YUI compressor\n          barH = bar.h;\n        let locX = e.pageX - offset.l,\n          locY = e.pageY - offset.t;\n        // keep the arrow within the bounds of the bar\n        if (locX < 0) locX = 0;\n        else if (locX > barW) locX = barW;\n        if (locY < 0) locY = 0;\n        else if (locY > barH) locY = barH;\n        val.call($this, 'xy', {x: ((locX / barW) * rangeX) + minX, y: ((locY / barH) * rangeY) + minY});\n      }\n      function draw () {\n        const\n          barW = bar.w,\n          barH = bar.h,\n          arrowW = arrow.w,\n          arrowH = arrow.h;\n        let arrowOffsetX = 0,\n          arrowOffsetY = 0;\n        setTimeout(function () {\n          if (rangeX > 0) { // range is greater than zero\n            // constrain to bounds\n            if (x === maxX) arrowOffsetX = barW;\n            else arrowOffsetX = ((x / rangeX) * barW) | 0;\n          }\n          if (rangeY > 0) { // range is greater than zero\n            // constrain to bounds\n            if (y === maxY) arrowOffsetY = barH;\n            else arrowOffsetY = ((y / rangeY) * barH) | 0;\n          }\n          // if arrow width is greater than bar width, center arrow and prevent horizontal dragging\n          if (arrowW >= barW) arrowOffsetX = (barW >> 1) - (arrowW >> 1); // number >> 1 - superfast bitwise divide by two and truncate (move bits over one bit discarding lowest)\n          else arrowOffsetX -= arrowW >> 1;\n          // if arrow height is greater than bar height, center arrow and prevent vertical dragging\n          if (arrowH >= barH) arrowOffsetY = (barH >> 1) - (arrowH >> 1);\n          else arrowOffsetY -= arrowH >> 1;\n          // set the arrow position based on these offsets\n          arrow.css({left: arrowOffsetX + 'px', top: arrowOffsetY + 'px'});\n        }, 0);\n      }\n      function val (name, value, context) {\n        const set = value !== undefined;\n        if (!set) {\n          if (name === undefined || name == null) name = 'xy';\n          switch (name.toLowerCase()) {\n          case 'x': return x;\n          case 'y': return y;\n          case 'xy':\n          default: return {x, y};\n          }\n        }\n        if (context != null && context === $this) return;\n        let changed = false;\n\n        let newX, newY;\n        if (name == null) name = 'xy';\n        switch (name.toLowerCase()) {\n        case 'x':\n          newX = (value && ((value.x && value.x | 0) || value | 0)) || 0;\n          break;\n        case 'y':\n          newY = (value && ((value.y && value.y | 0) || value | 0)) || 0;\n          break;\n        case 'xy':\n        default:\n          newX = (value && value.x && value.x | 0) || 0;\n          newY = (value && value.y && value.y | 0) || 0;\n          break;\n        }\n        if (newX != null) {\n          if (newX < minX) newX = minX;\n          else if (newX > maxX) newX = maxX;\n          if (x !== newX) {\n            x = newX;\n            changed = true;\n          }\n        }\n        if (newY != null) {\n          if (newY < minY) newY = minY;\n          else if (newY > maxY) newY = maxY;\n          if (y !== newY) {\n            y = newY;\n            changed = true;\n          }\n        }\n        changed && fireChangeEvents.call($this, context || $this);\n      }\n      function range (name, value) {\n        const set = value !== undefined;\n        if (!set) {\n          if (name === undefined || name == null) name = 'all';\n          switch (name.toLowerCase()) {\n          case 'minx': return minX;\n          case 'maxx': return maxX;\n          case 'rangex': return {minX, maxX, rangeX};\n          case 'miny': return minY;\n          case 'maxy': return maxY;\n          case 'rangey': return {minY, maxY, rangeY};\n          case 'all':\n          default: return {minX, maxX, rangeX, minY, maxY, rangeY};\n          }\n        }\n        let // changed = false,\n          newMinX,\n          newMaxX,\n          newMinY,\n          newMaxY;\n        if (name == null) name = 'all';\n        switch (name.toLowerCase()) {\n        case 'minx':\n          newMinX = (value && ((value.minX && value.minX | 0) || value | 0)) || 0;\n          break;\n        case 'maxx':\n          newMaxX = (value && ((value.maxX && value.maxX | 0) || value | 0)) || 0;\n          break;\n        case 'rangex':\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          break;\n        case 'miny':\n          newMinY = (value && ((value.minY && value.minY | 0) || value | 0)) || 0;\n          break;\n        case 'maxy':\n          newMaxY = (value && ((value.maxY && value.maxY | 0) || value | 0)) || 0;\n          break;\n        case 'rangey':\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        case 'all':\n        default:\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        }\n        if (newMinX != null && minX !== newMinX) {\n          minX = newMinX;\n          rangeX = maxX - minX;\n        }\n        if (newMaxX != null && maxX !== newMaxX) {\n          maxX = newMaxX;\n          rangeX = maxX - minX;\n        }\n        if (newMinY != null && minY !== newMinY) {\n          minY = newMinY;\n          rangeY = maxY - minY;\n        }\n        if (newMaxY != null && maxY !== newMaxY) {\n          maxY = newMaxY;\n          rangeY = maxY - minY;\n        }\n      }\n      function bind (callback) {\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      function unbind (callback) {\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) changeEvents.splice(i, 1);\n      }\n      function destroy () {\n        // unbind all possible events and null objects\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        bar.unbind('mousedown', mouseDown);\n        bar = null;\n        arrow = null;\n        changeEvents = null;\n      }\n      let offset,\n        timeout,\n        x = 0,\n        y = 0,\n        minX = 0,\n        maxX = 100,\n        rangeX = 100,\n        minY = 0,\n        maxY = 100,\n        rangeY = 100,\n        arrow = bar.find('img:first'), // the arrow image to drag\n        changeEvents = [];\n\n      $.extend(true, $this, // public properties, methods, and event bindings - these we need to access from other controls\n        {\n          val,\n          range,\n          bind,\n          unbind,\n          destroy\n        }\n      );\n      // initialize this control\n      arrow.src = options.arrow && options.arrow.image;\n      arrow.w = (options.arrow && options.arrow.width) || arrow.width();\n      arrow.h = (options.arrow && options.arrow.height) || arrow.height();\n      bar.w = (options.map && options.map.width) || bar.width();\n      bar.h = (options.map && options.map.height) || bar.height();\n      // bind mousedown event\n      bar.bind('mousedown', mouseDown);\n      bind.call($this, draw);\n    }\n  }\n  // controls for all the input elements for the typing in color values\n  function ColorValuePicker (picker, color, bindedHex, alphaPrecision) {\n    const $this = this; // private properties and methods\n    const inputs = picker.find('td.Text input');\n    // input box key down - use arrows to alter color\n    function keyDown (e) {\n      if (e.target.value === '' && e.target !== hex.get(0) && ((bindedHex != null && e.target !== bindedHex.get(0)) || bindedHex == null)) return;\n      if (!validateKey(e)) return e;\n      switch (e.target) {\n      case red.get(0):\n        switch (e.keyCode) {\n        case 38:\n          red.val(setValueInRange.call($this, (red.val() << 0) + 1, 0, 255));\n          color.val('r', red.val(), e.target);\n          return false;\n        case 40:\n          red.val(setValueInRange.call($this, (red.val() << 0) - 1, 0, 255));\n          color.val('r', red.val(), e.target);\n          return false;\n        }\n        break;\n      case green.get(0):\n        switch (e.keyCode) {\n        case 38:\n          green.val(setValueInRange.call($this, (green.val() << 0) + 1, 0, 255));\n          color.val('g', green.val(), e.target);\n          return false;\n        case 40:\n          green.val(setValueInRange.call($this, (green.val() << 0) - 1, 0, 255));\n          color.val('g', green.val(), e.target);\n          return false;\n        }\n        break;\n      case blue.get(0):\n        switch (e.keyCode) {\n        case 38:\n          blue.val(setValueInRange.call($this, (blue.val() << 0) + 1, 0, 255));\n          color.val('b', blue.val(), e.target);\n          return false;\n        case 40:\n          blue.val(setValueInRange.call($this, (blue.val() << 0) - 1, 0, 255));\n          color.val('b', blue.val(), e.target);\n          return false;\n        }\n        break;\n      case alpha && alpha.get(0):\n        switch (e.keyCode) {\n        case 38:\n          alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) + 1, 0, 100));\n          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n          return false;\n        case 40:\n          alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) - 1, 0, 100));\n          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n          return false;\n        }\n        break;\n      case hue.get(0):\n        switch (e.keyCode) {\n        case 38:\n          hue.val(setValueInRange.call($this, (hue.val() << 0) + 1, 0, 360));\n          color.val('h', hue.val(), e.target);\n          return false;\n        case 40:\n          hue.val(setValueInRange.call($this, (hue.val() << 0) - 1, 0, 360));\n          color.val('h', hue.val(), e.target);\n          return false;\n        }\n        break;\n      case saturation.get(0):\n        switch (e.keyCode) {\n        case 38:\n          saturation.val(setValueInRange.call($this, (saturation.val() << 0) + 1, 0, 100));\n          color.val('s', saturation.val(), e.target);\n          return false;\n        case 40:\n          saturation.val(setValueInRange.call($this, (saturation.val() << 0) - 1, 0, 100));\n          color.val('s', saturation.val(), e.target);\n          return false;\n        }\n        break;\n      case value.get(0):\n        switch (e.keyCode) {\n        case 38:\n          value.val(setValueInRange.call($this, (value.val() << 0) + 1, 0, 100));\n          color.val('v', value.val(), e.target);\n          return false;\n        case 40:\n          value.val(setValueInRange.call($this, (value.val() << 0) - 1, 0, 100));\n          color.val('v', value.val(), e.target);\n          return false;\n        }\n        break;\n      }\n    }\n    // input box key up - validate value and set color\n    function keyUp (e) {\n      if (e.target.value === '' && e.target !== hex.get(0) &&\n        ((bindedHex != null && e.target !== bindedHex.get(0)) ||\n        bindedHex == null)) return;\n      if (!validateKey(e)) return e;\n      switch (e.target) {\n      case red.get(0):\n        red.val(setValueInRange.call($this, red.val(), 0, 255));\n        color.val('r', red.val(), e.target);\n        break;\n      case green.get(0):\n        green.val(setValueInRange.call($this, green.val(), 0, 255));\n        color.val('g', green.val(), e.target);\n        break;\n      case blue.get(0):\n        blue.val(setValueInRange.call($this, blue.val(), 0, 255));\n        color.val('b', blue.val(), e.target);\n        break;\n      case alpha && alpha.get(0):\n        alpha.val(setValueInRange.call($this, alpha.val(), 0, 100));\n        color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n        break;\n      case hue.get(0):\n        hue.val(setValueInRange.call($this, hue.val(), 0, 360));\n        color.val('h', hue.val(), e.target);\n        break;\n      case saturation.get(0):\n        saturation.val(setValueInRange.call($this, saturation.val(), 0, 100));\n        color.val('s', saturation.val(), e.target);\n        break;\n      case value.get(0):\n        value.val(setValueInRange.call($this, value.val(), 0, 100));\n        color.val('v', value.val(), e.target);\n        break;\n      case hex.get(0):\n        hex.val(hex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n        bindedHex && bindedHex.val(hex.val());\n        color.val('hex', hex.val() !== '' ? hex.val() : null, e.target);\n        break;\n      case bindedHex && bindedHex.get(0):\n        bindedHex.val(bindedHex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n        hex.val(bindedHex.val());\n        color.val('hex', bindedHex.val() !== '' ? bindedHex.val() : null, e.target);\n        break;\n      case ahex && ahex.get(0):\n        ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));\n        color.val('a', ahex.val() != null ? parseInt(ahex.val(), 16) : null, e.target);\n        break;\n      }\n    }\n    // input box blur - reset to original if value empty\n    function blur (e) {\n      if (color.val() != null) {\n        switch (e.target) {\n        case red.get(0): red.val(color.val('r')); break;\n        case green.get(0): green.val(color.val('g')); break;\n        case blue.get(0): blue.val(color.val('b')); break;\n        case alpha && alpha.get(0): alpha.val(toFixedNumeric((color.val('a') * 100) / 255, alphaPrecision)); break;\n        case hue.get(0): hue.val(color.val('h')); break;\n        case saturation.get(0): saturation.val(color.val('s')); break;\n        case value.get(0): value.val(color.val('v')); break;\n        case hex.get(0):\n        case bindedHex && bindedHex.get(0):\n          hex.val(color.val('hex'));\n          bindedHex && bindedHex.val(color.val('hex'));\n          break;\n        case ahex && ahex.get(0): ahex.val(color.val('ahex').substring(6)); break;\n        }\n      }\n    }\n    function validateKey (e) {\n      switch (e.keyCode) {\n      case 9:\n      case 16:\n      case 29:\n      case 37:\n      case 39:\n        return false;\n      case 'c'.charCodeAt():\n      case 'v'.charCodeAt():\n        if (e.ctrlKey) return false;\n      }\n      return true;\n    }\n    // constrain value within range\n    function setValueInRange (value, min, max) {\n      if (value === '' || isNaN(value)) return min;\n      if (value > max) return max;\n      if (value < min) return min;\n      return value;\n    }\n    function colorChanged (ui, context) {\n      const all = ui.val('all');\n      if (context !== red.get(0)) red.val(all != null ? all.r : '');\n      if (context !== green.get(0)) green.val(all != null ? all.g : '');\n      if (context !== blue.get(0)) blue.val(all != null ? all.b : '');\n      if (alpha && context !== alpha.get(0)) alpha.val(all != null ? toFixedNumeric((all.a * 100) / 255, alphaPrecision) : '');\n      if (context !== hue.get(0)) hue.val(all != null ? all.h : '');\n      if (context !== saturation.get(0)) saturation.val(all != null ? all.s : '');\n      if (context !== value.get(0)) value.val(all != null ? all.v : '');\n      if (context !== hex.get(0) && ((bindedHex && context !== bindedHex.get(0)) || !bindedHex)) hex.val(all != null ? all.hex : '');\n      if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(all != null ? all.hex : '');\n      if (ahex && context !== ahex.get(0)) ahex.val(all != null ? all.ahex.substring(6) : '');\n    }\n    function destroy () {\n      // unbind all events and null objects\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);\n      color.unbind(colorChanged);\n      red = null;\n      green = null;\n      blue = null;\n      alpha = null;\n      hue = null;\n      saturation = null;\n      value = null;\n      hex = null;\n      ahex = null;\n    }\n    let\n      red = inputs.eq(3),\n      green = inputs.eq(4),\n      blue = inputs.eq(5),\n      alpha = inputs.length > 7 ? inputs.eq(6) : null,\n      hue = inputs.eq(0),\n      saturation = inputs.eq(1),\n      value = inputs.eq(2),\n      hex = inputs.eq(inputs.length > 7 ? 7 : 6),\n      ahex = inputs.length > 7 ? inputs.eq(8) : null;\n    $.extend(true, $this, {\n      // public properties and methods\n      destroy\n    });\n    red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);\n    red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);\n    color.bind(colorChanged);\n  }\n\n  /**\n  * @typedef {PlainObject} module:jPicker.JPickerInit\n  * @property {Integer} a\n  * @property {Integer} b\n  * @property {Integer} g\n  * @property {Integer} h\n  * @property {Integer} r\n  * @property {Integer} s\n  * @property {Integer} v\n  * @property {string} hex\n  * @property {string} ahex\n  */\n\n  /**\n  * @namespace {PlainObject} jPicker\n  * @memberof external:jQuery\n  */\n  $.jPicker = /** @lends external:jQuery.jPicker */ {\n    /**\n    * Array holding references to each active instance of the jPicker control\n    * @type {external:jQuery.fn.$.fn.jPicker[]}\n    */\n    List: [],\n    /**\n    * Color object - we will be able to assign by any color space type or\n    * retrieve any color space info.\n    * We want this public so we can optionally assign new color objects to\n    * initial values using inputs other than a string hex value (also supported)\n    * Note: JSDoc didn't document when expressed here as an ES6 Class.\n    * @namespace\n    * @class\n    * @memberof external:jQuery.jPicker\n    * @param {module:jPicker.JPickerInit} init\n    */\n    Color: function (init) {\n      const $this = this;\n      function fireChangeEvents (context) {\n        for (let i = 0; i < changeEvents.length; i++) changeEvents[i].call($this, $this, context);\n      }\n      function val (name, value, context) {\n        // Kind of ugly\n        const set = Boolean(value);\n        if (set && value.ahex === '') value.ahex = '00000000';\n        if (!set) {\n          if (name === undefined || name == null || name === '') name = 'all';\n          if (r == null) return null;\n          switch (name.toLowerCase()) {\n          case 'ahex': return ColorMethods.rgbaToHex({r, g, b, a});\n          case 'hex': return val('ahex').substring(0, 6);\n          case 'all': return {r, g, b, a, h, s, v, hex: val.call($this, 'hex'), ahex: val.call($this, 'ahex')};\n          default:\n            let ret = {};\n            const nameLength = name.length;\n            for (let i = 0; i < nameLength; i++) {\n              switch (name.charAt(i)) {\n              case 'r':\n                if (nameLength === 1) ret = r;\n                else ret.r = r;\n                break;\n              case 'g':\n                if (nameLength === 1) ret = g;\n                else ret.g = g;\n                break;\n              case 'b':\n                if (nameLength === 1) ret = b;\n                else ret.b = b;\n                break;\n              case 'a':\n                if (nameLength === 1) ret = a;\n                else ret.a = a;\n                break;\n              case 'h':\n                if (nameLength === 1) ret = h;\n                else ret.h = h;\n                break;\n              case 's':\n                if (nameLength === 1) ret = s;\n                else ret.s = s;\n                break;\n              case 'v':\n                if (nameLength === 1) ret = v;\n                else ret.v = v;\n                break;\n              }\n            }\n            return typeof ret === 'object' && !Object.keys(ret).length\n              ? val.call($this, 'all')\n              : ret;\n          }\n        }\n        if (context != null && context === $this) return;\n        if (name == null) name = '';\n\n        let changed = false;\n        if (value == null) {\n          if (r != null) {\n            r = null;\n            changed = true;\n          }\n          if (g != null) {\n            g = null;\n            changed = true;\n          }\n          if (b != null) {\n            b = null;\n            changed = true;\n          }\n          if (a != null) {\n            a = null;\n            changed = true;\n          }\n          if (h != null) {\n            h = null;\n            changed = true;\n          }\n          if (s != null) {\n            s = null;\n            changed = true;\n          }\n          if (v != null) {\n            v = null;\n            changed = true;\n          }\n          changed && fireChangeEvents.call($this, context || $this);\n          return;\n        }\n        switch (name.toLowerCase()) {\n        case 'ahex':\n        case 'hex':\n          const ret = ColorMethods.hexToRgba((value && (value.ahex || value.hex)) || value || 'none');\n          val.call($this, 'rgba', {r: ret.r, g: ret.g, b: ret.b, a: name === 'ahex' ? ret.a : a != null ? a : 255}, context);\n          break;\n        default:\n          if (value && (value.ahex != null || value.hex != null)) {\n            val.call($this, 'ahex', value.ahex || value.hex || '00000000', context);\n            return;\n          }\n          const newV = {};\n          let rgb = false, hsv = false;\n          if (value.r !== undefined && !name.includes('r')) name += 'r';\n          if (value.g !== undefined && !name.includes('g')) name += 'g';\n          if (value.b !== undefined && !name.includes('b')) name += 'b';\n          if (value.a !== undefined && !name.includes('a')) name += 'a';\n          if (value.h !== undefined && !name.includes('h')) name += 'h';\n          if (value.s !== undefined && !name.includes('s')) name += 's';\n          if (value.v !== undefined && !name.includes('v')) name += 'v';\n          for (let i = 0; i < name.length; i++) {\n            switch (name.charAt(i)) {\n            case 'r':\n              if (hsv) continue;\n              rgb = true;\n              newV.r = (value.r && value.r | 0) || (value | 0) || 0;\n              if (newV.r < 0) newV.r = 0;\n              else if (newV.r > 255) newV.r = 255;\n              if (r !== newV.r) {\n                ({r} = newV);\n                changed = true;\n              }\n              break;\n            case 'g':\n              if (hsv) continue;\n              rgb = true;\n              newV.g = (value && value.g && value.g | 0) || (value && value | 0) || 0;\n              if (newV.g < 0) newV.g = 0;\n              else if (newV.g > 255) newV.g = 255;\n              if (g !== newV.g) {\n                ({g} = newV);\n                changed = true;\n              }\n              break;\n            case 'b':\n              if (hsv) continue;\n              rgb = true;\n              newV.b = (value && value.b && value.b | 0) || (value && value | 0) || 0;\n              if (newV.b < 0) newV.b = 0;\n              else if (newV.b > 255) newV.b = 255;\n              if (b !== newV.b) {\n                ({b} = newV);\n                changed = true;\n              }\n              break;\n            case 'a':\n              newV.a = value && value.a != null ? value.a | 0 : value | 0;\n              if (newV.a < 0) newV.a = 0;\n              else if (newV.a > 255) newV.a = 255;\n              if (a !== newV.a) {\n                ({a} = newV);\n                changed = true;\n              }\n              break;\n            case 'h':\n              if (rgb) continue;\n              hsv = true;\n              newV.h = (value && value.h && value.h | 0) || (value && value | 0) || 0;\n              if (newV.h < 0) newV.h = 0;\n              else if (newV.h > 360) newV.h = 360;\n              if (h !== newV.h) {\n                ({h} = newV);\n                changed = true;\n              }\n              break;\n            case 's':\n              if (rgb) continue;\n              hsv = true;\n              newV.s = value.s != null ? value.s | 0 : value | 0;\n              if (newV.s < 0) newV.s = 0;\n              else if (newV.s > 100) newV.s = 100;\n              if (s !== newV.s) {\n                ({s} = newV);\n                changed = true;\n              }\n              break;\n            case 'v':\n              if (rgb) continue;\n              hsv = true;\n              newV.v = value.v != null ? value.v | 0 : value | 0;\n              if (newV.v < 0) newV.v = 0;\n              else if (newV.v > 100) newV.v = 100;\n              if (v !== newV.v) {\n                ({v} = newV);\n                changed = true;\n              }\n              break;\n            }\n          }\n          if (changed) {\n            if (rgb) {\n              r = r || 0;\n              g = g || 0;\n              b = b || 0;\n              const ret = ColorMethods.rgbToHsv({r, g, b});\n              ({h, s, v} = ret);\n            } else if (hsv) {\n              h = h || 0;\n              s = s != null ? s : 100;\n              v = v != null ? v : 100;\n              const ret = ColorMethods.hsvToRgb({h, s, v});\n              ({r, g, b} = ret);\n            }\n            a = a != null ? a : 255;\n            fireChangeEvents.call($this, context || $this);\n          }\n          break;\n        }\n      }\n      function bind (callback) {\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      function unbind (callback) {\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) {\n          changeEvents.splice(i, 1);\n        }\n      }\n      function destroy () {\n        changeEvents = null;\n      }\n      let r, g, b, a, h, s, v, changeEvents = [];\n\n      $.extend(true, $this, {\n        // public properties and methods\n        val,\n        bind,\n        unbind,\n        destroy\n      });\n      if (init) {\n        if (init.ahex != null) {\n          val('ahex', init);\n        } else if (init.hex != null) {\n          val(\n            (init.a != null ? 'a' : '') + 'hex',\n            init.a != null\n              ? {ahex: init.hex + ColorMethods.intToHex(init.a)}\n              : init\n          );\n        } else if (init.r != null && init.g != null && init.b != null) {\n          val('rgb' + (init.a != null ? 'a' : ''), init);\n        } else if (init.h != null && init.s != null && init.v != null) {\n          val('hsv' + (init.a != null ? 'a' : ''), init);\n        }\n      }\n    },\n    /**\n    * color conversion methods  - make public to give use to external scripts\n    * @namespace\n    */\n    ColorMethods: {\n      /**\n      * @typedef {PlainObject} module:jPicker.RGBA\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      * @property {Integer} a\n      */\n      /**\n      * @typedef {PlainObject} module:jPicker.RGB\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      */\n      /**\n      * @param {string} hex\n      * @returns {module:jPicker.RGBA}\n      */\n      hexToRgba (hex) {\n        if (hex === '' || hex === 'none') return {r: null, g: null, b: null, a: null};\n        hex = this.validateHex(hex);\n        let r = '00', g = '00', b = '00', a = '255';\n        if (hex.length === 6) hex += 'ff';\n        if (hex.length > 6) {\n          r = hex.substring(0, 2);\n          g = hex.substring(2, 4);\n          b = hex.substring(4, 6);\n          a = hex.substring(6, hex.length);\n        } else {\n          if (hex.length > 4) {\n            r = hex.substring(4, hex.length);\n            hex = hex.substring(0, 4);\n          }\n          if (hex.length > 2) {\n            g = hex.substring(2, hex.length);\n            hex = hex.substring(0, 2);\n          }\n          if (hex.length > 0) b = hex.substring(0, hex.length);\n        }\n        return {\n          r: this.hexToInt(r), g: this.hexToInt(g), b: this.hexToInt(b), a: this.hexToInt(a)\n        };\n      },\n      /**\n      * @param {string} hex\n      * @returns {string}\n      */\n      validateHex (hex) {\n        // if (typeof hex === 'object') return '';\n        hex = hex.toLowerCase().replace(/[^a-f0-9]/g, '');\n        if (hex.length > 8) hex = hex.substring(0, 8);\n        return hex;\n      },\n      /**\n      * @param {module:jPicker.RGBA} rgba\n      * @returns {string}\n      */\n      rgbaToHex (rgba) {\n        return this.intToHex(rgba.r) + this.intToHex(rgba.g) + this.intToHex(rgba.b) + this.intToHex(rgba.a);\n      },\n      /**\n      * @param {Integer} dec\n      * @returns {string}\n      */\n      intToHex (dec) {\n        let result = (dec | 0).toString(16);\n        if (result.length === 1) result = ('0' + result);\n        return result.toLowerCase();\n      },\n      /**\n      * @param {string} hex\n      * @returns {Integer}\n      */\n      hexToInt (hex) {\n        return parseInt(hex, 16);\n      },\n      /**\n      * @typedef {PlainObject} module:jPicker.HSV\n      * @property {Integer} h\n      * @property {Integer} s\n      * @property {Integer} v\n      */\n      /**\n      * @param {module:jPicker.RGB} rgb\n      * @returns {module:jPicker.HSV}\n      */\n      rgbToHsv (rgb) {\n        const r = rgb.r / 255, g = rgb.g / 255, b = rgb.b / 255, hsv = {h: 0, s: 0, v: 0};\n        let min = 0, max = 0;\n        if (r >= g && r >= b) {\n          max = r;\n          min = g > b ? b : g;\n        } else if (g >= b && g >= r) {\n          max = g;\n          min = r > b ? b : r;\n        } else {\n          max = b;\n          min = g > r ? r : g;\n        }\n        hsv.v = max;\n        hsv.s = max ? (max - min) / max : 0;\n        let delta;\n        if (!hsv.s) hsv.h = 0;\n        else {\n          delta = max - min;\n          if (r === max) hsv.h = (g - b) / delta;\n          else if (g === max) hsv.h = 2 + (b - r) / delta;\n          else hsv.h = 4 + (r - g) / delta;\n          hsv.h = parseInt(hsv.h * 60);\n          if (hsv.h < 0) hsv.h += 360;\n        }\n        hsv.s = (hsv.s * 100) | 0;\n        hsv.v = (hsv.v * 100) | 0;\n        return hsv;\n      },\n      /**\n      * @param {module:jPicker.HSV} hsv\n      * @returns {module:jPicker.RGB}\n      */\n      hsvToRgb (hsv) {\n        const rgb = {r: 0, g: 0, b: 0, a: 100};\n        let {h, s, v} = hsv;\n        if (s === 0) {\n          if (v === 0) rgb.r = rgb.g = rgb.b = 0;\n          else rgb.r = rgb.g = rgb.b = (v * 255 / 100) | 0;\n        } else {\n          if (h === 360) h = 0;\n          h /= 60;\n          s = s / 100;\n          v = v / 100;\n          const i = h | 0,\n            f = h - i,\n            p = v * (1 - s),\n            q = v * (1 - (s * f)),\n            t = v * (1 - (s * (1 - f)));\n          switch (i) {\n          case 0:\n            rgb.r = v;\n            rgb.g = t;\n            rgb.b = p;\n            break;\n          case 1:\n            rgb.r = q;\n            rgb.g = v;\n            rgb.b = p;\n            break;\n          case 2:\n            rgb.r = p;\n            rgb.g = v;\n            rgb.b = t;\n            break;\n          case 3:\n            rgb.r = p;\n            rgb.g = q;\n            rgb.b = v;\n            break;\n          case 4:\n            rgb.r = t;\n            rgb.g = p;\n            rgb.b = v;\n            break;\n          case 5:\n            rgb.r = v;\n            rgb.g = p;\n            rgb.b = q;\n            break;\n          }\n          rgb.r = (rgb.r * 255) | 0;\n          rgb.g = (rgb.g * 255) | 0;\n          rgb.b = (rgb.b * 255) | 0;\n        }\n        return rgb;\n      }\n    }\n  };\n  const {Color, List, ColorMethods} = $.jPicker; // local copies for YUI compressor\n  /**\n   * @function external:jQuery.fn.jPicker\n   * @see {@link external:jQuery.fn.$.fn.jPicker}\n   */\n  /**\n  * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't\n  *   get us treated as a function as well as a namespace (even with `@function name`),\n  *   so we use an approach to add a redundant `$.fn.` in the name.\n  * @namespace\n  * @memberof external:jQuery.fn\n  * @param {external:jQuery.fn.jPickerOptions} options\n  * @returns {external:jQuery}\n  */\n  $.fn.jPicker = function (options) {\n    const $arguments = arguments;\n    return this.each(function () {\n      const $this = this, settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor\n      if ($($this).get(0).nodeName.toLowerCase() === 'input') { // Add color picker icon if binding to an input element and bind the events to the input\n        $.extend(true, settings, {\n          window: {\n            bindToInput: true,\n            expandable: true,\n            input: $($this)\n          }\n        });\n        if ($($this).val() === '') {\n          settings.color.active = new Color({hex: null});\n          settings.color.current = new Color({hex: null});\n        } else if (ColorMethods.validateHex($($this).val())) {\n          settings.color.active = new Color({hex: $($this).val(), a: settings.color.active.val('a')});\n          settings.color.current = new Color({hex: $($this).val(), a: settings.color.active.val('a')});\n        }\n      }\n      if (settings.window.expandable) {\n        $($this).after('<span class=\"jPicker\"><span class=\"Icon\"><span class=\"Color\">&nbsp;</span><span class=\"Alpha\">&nbsp;</span><span class=\"Image\" title=\"Click To Open Color Picker\">&nbsp;</span><span class=\"Container\">&nbsp;</span></span></span>');\n      } else {\n        settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results\n      }\n      const isLessThanIE7 = parseFloat(navigator.appVersion.split('MSIE')[1]) < 7 && document.body.filters; // needed to run the AlphaImageLoader function for IE6\n      // set color mode and update visuals for the new color mode\n      /**\n       *\n       * @param {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} colorMode [description]\n       * @throws {Error} Invalid mode\n       * @returns {undefined}\n       */\n      function setColorMode (colorMode) {\n        const {active} = color, // local copies for YUI compressor\n          // {clientPath} = images,\n          hex = active.val('hex');\n        let rgbMap, rgbBar;\n        settings.color.mode = colorMode;\n        switch (colorMode) {\n        case 'h':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setImgLoc.call($this, colorMapL1, 0);\n            setAlpha.call($this, colorMapL1, 100);\n            setImgLoc.call($this, colorMapL2, 260);\n            setAlpha.call($this, colorMapL2, 100);\n            setBG.call($this, colorBarDiv, 'transparent');\n            setImgLoc.call($this, colorBarL1, 0);\n            setAlpha.call($this, colorBarL1, 100);\n            setImgLoc.call($this, colorBarL2, 260);\n            setAlpha.call($this, colorBarL2, 100);\n            setImgLoc.call($this, colorBarL3, 260);\n            setAlpha.call($this, colorBarL3, 100);\n            setImgLoc.call($this, colorBarL4, 260);\n            setAlpha.call($this, colorBarL4, 100);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 100, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 360});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('s'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 360 - active.val('h'), colorBar);\n          break;\n        case 's':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setImgLoc.call($this, colorMapL1, -260);\n            setImgLoc.call($this, colorMapL2, -520);\n            setImgLoc.call($this, colorBarL1, -260);\n            setImgLoc.call($this, colorBarL2, -520);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 100 - active.val('s'), colorBar);\n          break;\n        case 'v':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, '000000');\n            setImgLoc.call($this, colorMapL1, -780);\n            setImgLoc.call($this, colorMapL2, 260);\n            setBG.call($this, colorBarDiv, hex);\n            setImgLoc.call($this, colorBarL1, -520);\n            setImgLoc.call($this, colorBarL2, 260);\n            setAlpha.call($this, colorBarL2, 100);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('s')}, colorMap);\n          colorBar.val('y', 100 - active.val('v'), colorBar);\n          break;\n        case 'r':\n          rgbMap = -1040;\n          rgbBar = -780;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('r'), colorBar);\n          break;\n        case 'g':\n          rgbMap = -1560;\n          rgbBar = -1820;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('r')}, colorMap);\n          colorBar.val('y', 255 - active.val('g'), colorBar);\n          break;\n        case 'b':\n          rgbMap = -2080;\n          rgbBar = -2860;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('r'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('b'), colorBar);\n          break;\n        case 'a':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setImgLoc.call($this, colorMapL1, -260);\n            setImgLoc.call($this, colorMapL2, -520);\n            setImgLoc.call($this, colorBarL1, 260);\n            setImgLoc.call($this, colorBarL2, 260);\n            setAlpha.call($this, colorBarL2, 100);\n            setImgLoc.call($this, colorBarL6, 0);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 255 - active.val('a'), colorBar);\n          break;\n        default:\n          throw new Error('Invalid Mode');\n        }\n        switch (colorMode) {\n        case 'h':\n          break;\n        case 's':\n        case 'v':\n        case 'a':\n          setTimeout(function () {\n            setAlpha.call($this, colorMapL1, 100);\n            setAlpha.call($this, colorBarL1, 100);\n            setImgLoc.call($this, colorBarL3, 260);\n            setAlpha.call($this, colorBarL3, 100);\n            setImgLoc.call($this, colorBarL4, 260);\n            setAlpha.call($this, colorBarL4, 100);\n          }, 0);\n          break;\n        case 'r':\n        case 'g':\n        case 'b':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setBG.call($this, colorBarDiv, 'transparent');\n            setAlpha.call($this, colorBarL1, 100);\n            setAlpha.call($this, colorMapL1, 100);\n            setImgLoc.call($this, colorMapL1, rgbMap);\n            setImgLoc.call($this, colorMapL2, rgbMap - 260);\n            setImgLoc.call($this, colorBarL1, rgbBar - 780);\n            setImgLoc.call($this, colorBarL2, rgbBar - 520);\n            setImgLoc.call($this, colorBarL3, rgbBar);\n            setImgLoc.call($this, colorBarL4, rgbBar - 260);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          break;\n        }\n        if (active.val('ahex') == null) return;\n        activeColorChanged.call($this, active);\n      }\n      // Update color when user changes text values\n      function activeColorChanged (ui, context) {\n        if (context == null || (context !== colorBar && context !== colorMap)) positionMapAndBarArrows.call($this, ui, context);\n        setTimeout(function () {\n          updatePreview.call($this, ui);\n          updateMapVisuals.call($this, ui);\n          updateBarVisuals.call($this, ui);\n        }, 0);\n      }\n      // user has dragged the ColorMap pointer\n      function mapValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorMap && active.val() == null) return;\n        const xy = ui.val('all');\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('sv', {s: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 's':\n        case 'a':\n          active.val('hv', {h: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 'v':\n          active.val('hs', {h: xy.x, s: 100 - xy.y}, context);\n          break;\n        case 'r':\n          active.val('gb', {g: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'g':\n          active.val('rb', {r: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'b':\n          active.val('rg', {r: xy.x, g: 255 - xy.y}, context);\n          break;\n        }\n      }\n      // user has dragged the ColorBar slider\n      function colorBarValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorBar && active.val() == null) return;\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('h', {h: 360 - ui.val('y')}, context);\n          break;\n        case 's':\n          active.val('s', {s: 100 - ui.val('y')}, context);\n          break;\n        case 'v':\n          active.val('v', {v: 100 - ui.val('y')}, context);\n          break;\n        case 'r':\n          active.val('r', {r: 255 - ui.val('y')}, context);\n          break;\n        case 'g':\n          active.val('g', {g: 255 - ui.val('y')}, context);\n          break;\n        case 'b':\n          active.val('b', {b: 255 - ui.val('y')}, context);\n          break;\n        case 'a':\n          active.val('a', 255 - ui.val('y'), context);\n          break;\n        }\n      }\n      // position map and bar arrows to match current color\n      function positionMapAndBarArrows (ui, context) {\n        if (context !== colorMap) {\n          switch (settings.color.mode) {\n          case 'h':\n            const sv = ui.val('sv');\n            colorMap.val('xy', {x: sv != null ? sv.s : 100, y: 100 - (sv != null ? sv.v : 100)}, context);\n            break;\n          case 's':\n          case 'a':\n            const hv = ui.val('hv');\n            colorMap.val('xy', {x: (hv && hv.h) || 0, y: 100 - (hv != null ? hv.v : 100)}, context);\n            break;\n          case 'v':\n            const hs = ui.val('hs');\n            colorMap.val('xy', {x: (hs && hs.h) || 0, y: 100 - (hs != null ? hs.s : 100)}, context);\n            break;\n          case 'r':\n            const bg = ui.val('bg');\n            colorMap.val('xy', {x: (bg && bg.b) || 0, y: 255 - ((bg && bg.g) || 0)}, context);\n            break;\n          case 'g':\n            const br = ui.val('br');\n            colorMap.val('xy', {x: (br && br.b) || 0, y: 255 - ((br && br.r) || 0)}, context);\n            break;\n          case 'b':\n            const rg = ui.val('rg');\n            colorMap.val('xy', {x: (rg && rg.r) || 0, y: 255 - ((rg && rg.g) || 0)}, context);\n            break;\n          }\n        }\n        if (context !== colorBar) {\n          switch (settings.color.mode) {\n          case 'h':\n            colorBar.val('y', 360 - (ui.val('h') || 0), context);\n            break;\n          case 's':\n            const s = ui.val('s');\n            colorBar.val('y', 100 - (s != null ? s : 100), context);\n            break;\n          case 'v':\n            const v = ui.val('v');\n            colorBar.val('y', 100 - (v != null ? v : 100), context);\n            break;\n          case 'r':\n            colorBar.val('y', 255 - (ui.val('r') || 0), context);\n            break;\n          case 'g':\n            colorBar.val('y', 255 - (ui.val('g') || 0), context);\n            break;\n          case 'b':\n            colorBar.val('y', 255 - (ui.val('b') || 0), context);\n            break;\n          case 'a':\n            const a = ui.val('a');\n            colorBar.val('y', 255 - (a != null ? a : 255), context);\n            break;\n          }\n        }\n      }\n      function updatePreview (ui) {\n        try {\n          const all = ui.val('all');\n          activePreview.css({backgroundColor: (all && '#' + all.hex) || 'transparent'});\n          setAlpha.call($this, activePreview, (all && toFixedNumeric((all.a * 100) / 255, 4)) || 0);\n        } catch (e) { }\n      }\n      function updateMapVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h':\n          setBG.call($this, colorMapDiv, new Color({h: ui.val('h') || 0, s: 100, v: 100}).val('hex'));\n          break;\n        case 's':\n        case 'a':\n          const s = ui.val('s');\n          setAlpha.call($this, colorMapL2, 100 - (s != null ? s : 100));\n          break;\n        case 'v':\n          const v = ui.val('v');\n          setAlpha.call($this, colorMapL1, v != null ? v : 100);\n          break;\n        case 'r':\n          setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));\n          break;\n        case 'g':\n          setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));\n          break;\n        case 'b':\n          setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));\n          break;\n        }\n        const a = ui.val('a');\n        setAlpha.call($this, colorMapL3, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n      }\n      function updateBarVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h':\n          const a = ui.val('a');\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n          break;\n        case 's':\n          const hva = ui.val('hva'),\n            saturatedColor = new Color({h: (hva && hva.h) || 0, s: 100, v: hva != null ? hva.v : 100});\n          setBG.call($this, colorBarDiv, saturatedColor.val('hex'));\n          setAlpha.call($this, colorBarL2, 100 - (hva != null ? hva.v : 100));\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - ((hva && hva.a) || 0)) * 100) / 255, 4));\n          break;\n        case 'v':\n          const hsa = ui.val('hsa'),\n            valueColor = new Color({h: (hsa && hsa.h) || 0, s: hsa != null ? hsa.s : 100, v: 100});\n          setBG.call($this, colorBarDiv, valueColor.val('hex'));\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - ((hsa && hsa.a) || 0)) * 100) / 255, 4));\n          break;\n        case 'r':\n        case 'g':\n        case 'b':\n          const rgba = ui.val('rgba');\n          let hValue = 0, vValue = 0;\n          if (settings.color.mode === 'r') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          } else if (settings.color.mode === 'g') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.r) || 0;\n          } else if (settings.color.mode === 'b') {\n            hValue = (rgba && rgba.r) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          }\n          const middle = vValue > hValue ? hValue : vValue;\n          setAlpha.call($this, colorBarL2, hValue > vValue ? toFixedNumeric(((hValue - vValue) / (255 - vValue)) * 100, 4) : 0);\n          setAlpha.call($this, colorBarL3, vValue > hValue ? toFixedNumeric(((vValue - hValue) / (255 - hValue)) * 100, 4) : 0);\n          setAlpha.call($this, colorBarL4, toFixedNumeric((middle / 255) * 100, 4));\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - ((rgba && rgba.a) || 0)) * 100) / 255, 4));\n          break;\n        case 'a': {\n          const a = ui.val('a');\n          setBG.call($this, colorBarDiv, ui.val('hex') || '000000');\n          setAlpha.call($this, colorBarL5, a != null ? 0 : 100);\n          setAlpha.call($this, colorBarL6, a != null ? 100 : 0);\n          break;\n        }\n        }\n      }\n      function setBG (el, c) {\n        el.css({backgroundColor: (c && c.length === 6 && '#' + c) || 'transparent'});\n      }\n      function setImg (img, src) {\n        if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {\n          img.attr('pngSrc', src);\n          img.css({backgroundImage: 'none', filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\')'});\n        } else img.css({backgroundImage: 'url(\\'' + src + '\\')'});\n      }\n      function setImgLoc (img, y) {\n        img.css({top: y + 'px'});\n      }\n      function setAlpha (obj, alpha) {\n        obj.css({visibility: alpha > 0 ? 'visible' : 'hidden'});\n        if (alpha > 0 && alpha < 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (src != null && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'});\n            } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n          } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n        } else if (alpha === 0 || alpha === 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (src != null && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\')'});\n            } else obj.css({opacity: ''});\n          } else obj.css({opacity: ''});\n        }\n      }\n      // revert color to original color when opened\n      function revertColor () {\n        color.active.val('ahex', color.current.val('ahex'));\n      }\n      // commit the color changes\n      function commitColor () {\n        color.current.val('ahex', color.active.val('ahex'));\n      }\n      function radioClicked (e) {\n        $(this).parents('tbody:first').find('input:radio[value!=\"' + e.target.value + '\"]').removeAttr('checked');\n        setColorMode.call($this, e.target.value);\n      }\n      function currentClicked () {\n        revertColor.call($this);\n      }\n      function cancelClicked () {\n        revertColor.call($this);\n        settings.window.expandable && hide.call($this);\n        typeof cancelCallback === 'function' && cancelCallback.call($this, color.active, cancelButton);\n      }\n      function okClicked () {\n        commitColor.call($this);\n        settings.window.expandable && hide.call($this);\n        typeof commitCallback === 'function' && commitCallback.call($this, color.active, okButton);\n      }\n      function iconImageClicked () {\n        show.call($this);\n      }\n      function currentColorChanged (ui, context) {\n        const hex = ui.val('hex');\n        currentPreview.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call($this, currentPreview, toFixedNumeric(((ui.val('a') || 0) * 100) / 255, 4));\n      }\n      function expandableColorChanged (ui, context) {\n        const hex = ui.val('hex');\n        const va = ui.val('va');\n        iconColor.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call($this, iconAlpha, toFixedNumeric(((255 - ((va && va.a) || 0)) * 100) / 255, 4));\n        if (settings.window.bindToInput && settings.window.updateInputColor) {\n          settings.window.input.css({\n            backgroundColor: (hex && '#' + hex) || 'transparent',\n            color: va == null || va.v > 75 ? '#000000' : '#ffffff'\n          });\n        }\n      }\n      function moveBarMouseDown (e) {\n        // const {element} = settings.window, // local copies for YUI compressor\n        //     {page} = settings.window;\n        elementStartX = parseInt(container.css('left'));\n        elementStartY = parseInt(container.css('top'));\n        pageStartX = e.pageX;\n        pageStartY = e.pageY;\n        // bind events to document to move window - we will unbind these on mouseup\n        $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);\n        e.preventDefault(); // prevent attempted dragging of the column\n      }\n      function documentMouseMove (e) {\n        container.css({left: elementStartX - (pageStartX - e.pageX) + 'px', top: elementStartY - (pageStartY - e.pageY) + 'px'});\n        if (settings.window.expandable && !$.support.boxModel) container.prev().css({left: container.css('left'), top: container.css('top')});\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      function documentMouseUp (e) {\n        $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      function quickPickClicked (e) {\n        e.preventDefault();\n        e.stopPropagation();\n        color.active.val('ahex', $(this).attr('title') || null, e.target);\n        return false;\n      }\n      function show () {\n        color.current.val('ahex', color.active.val('ahex'));\n        function attachIFrame () {\n          if (!settings.window.expandable || $.support.boxModel) return;\n          const table = container.find('table:first');\n          container.before('<iframe/>');\n          container.prev().css({width: table.width(), height: container.height(), opacity: 0, position: 'absolute', left: container.css('left'), top: container.css('top')});\n        }\n        if (settings.window.expandable) {\n          $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n          container.css({zIndex: 20});\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeIn(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'slide':\n          container.slideDown(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'show':\n        default:\n          container.show(settings.window.effects.speed.show, attachIFrame);\n          break;\n        }\n      }\n      function hide () {\n        function removeIFrame () {\n          if (settings.window.expandable) container.css({zIndex: 10});\n          if (!settings.window.expandable || $.support.boxModel) return;\n          container.prev().remove();\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeOut(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'slide':\n          container.slideUp(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'show':\n        default:\n          container.hide(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        }\n      }\n      function initialize () {\n        const win = settings.window,\n          popup = win.expandable ? $($this).next().find('.Container:first') : null;\n        container = win.expandable ? $('<div/>') : $($this);\n        container.addClass('jPicker Container');\n        if (win.expandable) container.hide();\n        container.get(0).onselectstart = function (event) { if (event.target.nodeName.toLowerCase() !== 'input') return false; };\n        // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and\n        // this control really is tabular data, so I believe it is the right move\n        const all = color.active.val('all');\n        if (win.alphaPrecision < 0) win.alphaPrecision = 0;\n        else if (win.alphaPrecision > 2) win.alphaPrecision = 2;\n        const controlHtml = `<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ${win.expandable ? `<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>` : ''}\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">${win.title || localization.text.title}</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"${images.clientPath + images.colorMap.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"${images.clientPath + images.colorBar.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">${localization.text.newColor}<div><span class=\"Active\" title=\"${localization.tooltips.colors.newColor}\">&nbsp;</span><span class=\"Current\" title=\"${localization.tooltips.colors.currentColor}\">&nbsp;</span></div>${localization.text.currentColor}</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"${localization.text.ok}\" title=\"${localization.tooltips.buttons.ok}\"/><input type=\"button\" class=\"Cancel\" value=\"${localization.text.cancel}\" title=\"${localization.tooltips.buttons.cancel}\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.hue.radio}\"><input type=\"radio\" value=\"h\"${settings.color.mode === 'h' ? ' checked=\"checked\"' : ''}/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.h : ''}\" title=\"${localization.tooltips.hue.textbox}\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.saturation.radio}\"><input type=\"radio\" value=\"s\"${settings.color.mode === 's' ? ' checked=\"checked\"' : ''}/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.s : ''}\" title=\"${localization.tooltips.saturation.textbox}\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.value.radio}\"><input type=\"radio\" value=\"v\"${settings.color.mode === 'v' ? ' checked=\"checked\"' : ''}/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.v : ''}\" title=\"${localization.tooltips.value.textbox}\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.red.radio}\"><input type=\"radio\" value=\"r\"${settings.color.mode === 'r' ? ' checked=\"checked\"' : ''}/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.r : ''}\" title=\"${localization.tooltips.red.textbox}\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.green.radio}\"><input type=\"radio\" value=\"g\"${settings.color.mode === 'g' ? ' checked=\"checked\"' : ''}/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.g : ''}\" title=\"${localization.tooltips.green.textbox}\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.blue.radio}\"><input type=\"radio\" value=\"b\"${settings.color.mode === 'b' ? ' checked=\"checked\"' : ''}/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.b : ''}\" title=\"${localization.tooltips.blue.textbox}\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">${win.alphaSupport ? `<label title=\"${localization.tooltips.alpha.radio}\"><input type=\"radio\" value=\"a\"${settings.color.mode === 'a' ? ' checked=\"checked\"' : ''}/>A:</label>` : '&nbsp;'}</td>\n              <td class=\"Text\">${win.alphaSupport ? `<input type=\"text\" maxlength=\"${3 + win.alphaPrecision}\" value=\"${all != null ? toFixedNumeric((all.a * 100) / 255, win.alphaPrecision) : ''}\" title=\"${localization.tooltips.alpha.textbox}\"/>&nbsp;%` : '&nbsp;'}</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"${localization.tooltips.hex.textbox}\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"${all != null ? all.hex : ''}\"/></label>${win.alphaSupport ? `<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"${all != null ? all.ahex.substring(6) : ''}\" title=\"${localization.tooltips.hex.alpha}\"/></td>` : '&nbsp;'}\n            </tr>\n          </tbody></table>`;\n        if (win.expandable) {\n          container.html(controlHtml);\n          if (!$(document.body).children('div.jPicker.Container').length) {\n            $(document.body).prepend(container);\n          } else {\n            $(document.body).children('div.jPicker.Container:last').after(container);\n          }\n          container.mousedown(\n            function () {\n              $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n              container.css({zIndex: 20});\n            });\n          container.css( // positions must be set and display set to absolute before source code injection or IE will size the container to fit the window\n            {\n              left:\n                win.position.x === 'left'\n                  ? (popup.offset().left - 530 - (win.position.y === 'center' ? 25 : 0)) + 'px'\n                  : win.position.x === 'center'\n                    ? (popup.offset().left - 260) + 'px'\n                    : win.position.x === 'right'\n                      ? (popup.offset().left - 10 + (win.position.y === 'center' ? 25 : 0)) + 'px'\n                      : win.position.x === 'screenCenter'\n                        ? (($(document).width() >> 1) - 260) + 'px'\n                        : (popup.offset().left + parseInt(win.position.x)) + 'px',\n              position: 'absolute',\n              top: win.position.y === 'top'\n                ? (popup.offset().top - 312) + 'px'\n                : win.position.y === 'center'\n                  ? (popup.offset().top - 156) + 'px'\n                  : win.position.y === 'bottom'\n                    ? (popup.offset().top + 25) + 'px'\n                    : (popup.offset().top + parseInt(win.position.y)) + 'px'\n            });\n        } else {\n          container = $($this);\n          container.html(controlHtml);\n        }\n        // initialize the objects to the source code just injected\n        const tbody = container.find('tbody:first');\n        colorMapDiv = tbody.find('div.Map:first');\n        colorBarDiv = tbody.find('div.Bar:first');\n        const MapMaps = colorMapDiv.find('span');\n        const BarMaps = colorBarDiv.find('span');\n        colorMapL1 = MapMaps.filter('.Map1:first');\n        colorMapL2 = MapMaps.filter('.Map2:first');\n        colorMapL3 = MapMaps.filter('.Map3:first');\n        colorBarL1 = BarMaps.filter('.Map1:first');\n        colorBarL2 = BarMaps.filter('.Map2:first');\n        colorBarL3 = BarMaps.filter('.Map3:first');\n        colorBarL4 = BarMaps.filter('.Map4:first');\n        colorBarL5 = BarMaps.filter('.Map5:first');\n        colorBarL6 = BarMaps.filter('.Map6:first');\n        // create color pickers and maps\n        colorMap = new Slider(colorMapDiv,\n          {\n            map: {\n              width: images.colorMap.width,\n              height: images.colorMap.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorMap.arrow.file,\n              width: images.colorMap.arrow.width,\n              height: images.colorMap.arrow.height\n            }\n          }\n        );\n        colorMap.bind(mapValueChanged);\n        colorBar = new Slider(colorBarDiv,\n          {\n            map: {\n              width: images.colorBar.width,\n              height: images.colorBar.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorBar.arrow.file,\n              width: images.colorBar.arrow.width,\n              height: images.colorBar.arrow.height\n            }\n          }\n        );\n        colorBar.bind(colorBarValueChanged);\n        colorPicker = new ColorValuePicker(\n          tbody,\n          color.active,\n          win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision\n        );\n        const hex = all != null ? all.hex : null,\n          preview = tbody.find('.Preview'),\n          button = tbody.find('.Button');\n        activePreview = preview.find('.Active:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        currentPreview = preview.find('.Current:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'}).bind('click', currentClicked);\n        setAlpha.call($this, currentPreview, toFixedNumeric((color.current.val('a') * 100) / 255, 4));\n        okButton = button.find('.Ok:first').bind('click', okClicked);\n        cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);\n        grid = button.find('.Grid:first');\n        setTimeout(function () {\n          setImg.call($this, colorMapL1, images.clientPath + 'Maps.png');\n          setImg.call($this, colorMapL2, images.clientPath + 'Maps.png');\n          setImg.call($this, colorMapL3, images.clientPath + 'map-opacity.png');\n          setImg.call($this, colorBarL1, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL2, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL3, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL4, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL5, images.clientPath + 'bar-opacity.png');\n          setImg.call($this, colorBarL6, images.clientPath + 'AlphaBar.png');\n          setImg.call($this, preview.find('div:first'), images.clientPath + 'preview-opacity.png');\n        }, 0);\n        tbody.find('td.Radio input').bind('click', radioClicked);\n        // initialize quick list\n        if (color.quickList && color.quickList.length > 0) {\n          let html = '';\n          for (let i = 0; i < color.quickList.length; i++) {\n            /* if default colors are hex strings, change them to color objects */\n            if ((typeof (color.quickList[i])).toString().toLowerCase() === 'string') color.quickList[i] = new Color({hex: color.quickList[i]});\n            const alpha = color.quickList[i].val('a');\n            let ahex = color.quickList[i].val('ahex');\n            if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';\n            const quickHex = color.quickList[i].val('hex');\n            if (!ahex) ahex = '00000000';\n            html += '<span class=\"QuickColor\"' + (' title=\"#' + ahex + '\"') + ' style=\"background-color:' + ((quickHex && '#' + quickHex) || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '\">&nbsp;</span>';\n          }\n          setImg.call($this, grid, images.clientPath + 'bar-opacity.png');\n          grid.html(html);\n          grid.find('.QuickColor').click(quickPickClicked);\n        }\n        setColorMode.call($this, settings.color.mode);\n        color.active.bind(activeColorChanged);\n        typeof liveCallback === 'function' && color.active.bind(liveCallback);\n        color.current.bind(currentColorChanged);\n        // bind to input\n        if (win.expandable) {\n          $this.icon = popup.parents('.Icon:first');\n          iconColor = $this.icon.find('.Color:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n          iconAlpha = $this.icon.find('.Alpha:first');\n          setImg.call($this, iconAlpha, images.clientPath + 'bar-opacity.png');\n          setAlpha.call($this, iconAlpha, toFixedNumeric(((255 - (all != null ? all.a : 0)) * 100) / 255, 4));\n          iconImage = $this.icon.find('.Image:first').css({\n            backgroundImage: 'url(\\'' + images.clientPath + images.picker.file + '\\')'\n          }).bind('click', iconImageClicked);\n          if (win.bindToInput && win.updateInputColor) {\n            win.input.css({\n              backgroundColor: (hex && '#' + hex) || 'transparent',\n              color: all == null || all.v > 75 ? '#000000' : '#ffffff'\n            });\n          }\n          moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);\n          color.active.bind(expandableColorChanged);\n        } else show.call($this);\n      }\n      function destroy () {\n        container.find('td.Radio input').unbind('click', radioClicked);\n        currentPreview.unbind('click', currentClicked);\n        cancelButton.unbind('click', cancelClicked);\n        okButton.unbind('click', okClicked);\n        if (settings.window.expandable) {\n          iconImage.unbind('click', iconImageClicked);\n          moveBar.unbind('mousedown', moveBarMouseDown);\n          $this.icon = null;\n        }\n        container.find('.QuickColor').unbind('click', quickPickClicked);\n        colorMapDiv = null;\n        colorBarDiv = null;\n        colorMapL1 = null;\n        colorMapL2 = null;\n        colorMapL3 = null;\n        colorBarL1 = null;\n        colorBarL2 = null;\n        colorBarL3 = null;\n        colorBarL4 = null;\n        colorBarL5 = null;\n        colorBarL6 = null;\n        colorMap.destroy();\n        colorMap = null;\n        colorBar.destroy();\n        colorBar = null;\n        colorPicker.destroy();\n        colorPicker = null;\n        activePreview = null;\n        currentPreview = null;\n        okButton = null;\n        cancelButton = null;\n        grid = null;\n        commitCallback = null;\n        cancelCallback = null;\n        liveCallback = null;\n        container.html('');\n        for (let i = 0; i < List.length; i++) {\n          if (List[i] === $this) {\n            List.splice(i, 1);\n          }\n        }\n      }\n      const {images, localization} = settings; // local copies for YUI compressor\n      const color = {\n        active: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active\n          })\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        current: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active})\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        quickList: settings.color.quickList\n      };\n\n      let elementStartX = null, // Used to record the starting css positions for dragging the control\n        elementStartY = null,\n        pageStartX = null, // Used to record the mousedown coordinates for dragging the control\n        pageStartY = null,\n        container = null,\n        colorMapDiv = null,\n        colorBarDiv = null,\n        colorMapL1 = null, // different layers of colorMap and colorBar\n        colorMapL2 = null,\n        colorMapL3 = null,\n        colorBarL1 = null,\n        colorBarL2 = null,\n        colorBarL3 = null,\n        colorBarL4 = null,\n        colorBarL5 = null,\n        colorBarL6 = null,\n        colorMap = null, // color maps\n        colorBar = null,\n        colorPicker = null,\n        activePreview = null, // color boxes above the radio buttons\n        currentPreview = null,\n        okButton = null,\n        cancelButton = null,\n        grid = null, // preset colors grid\n        iconColor = null, // iconColor for popup icon\n        iconAlpha = null, // iconAlpha for popup icon\n        iconImage = null, // iconImage popup icon\n        moveBar = null, // drag bar\n        commitCallback = typeof $arguments[1] === 'function' ? $arguments[1] : null,\n        liveCallback = typeof $arguments[2] === 'function' ? $arguments[2] : null,\n        cancelCallback = typeof $arguments[3] === 'function' ? $arguments[3] : null;\n\n      $.extend(true, $this, {\n        // public properties, methods, and callbacks\n        commitCallback, // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks \"OK\"\n        liveCallback, // liveCallback function can be overridden to return the selected color to a method you specify in live mode (continuous update)\n        cancelCallback, // cancelCallback function can be overridden to a method you specify when the user clicks \"Cancel\"\n        color,\n        show,\n        hide,\n        destroy // destroys this control entirely, removing all events and objects, and removing itself from the List\n      });\n      List.push($this);\n      setTimeout(function () {\n        initialize.call($this);\n      }, 0);\n    });\n  };\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsIconInfo\n  * @property {string} file Color Map/Color Bar/Color Picker arrow icon\n  * @property {Float} width\n  * @property {Float} height\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsImagesDimensionsArrow\n  * @property {Float} width\n  * @property {Float} height\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} arrow\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsRadioTextboxLocale\n  * @property {string} radio\n  * @property {string} textbox\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptions\n  * @property {PlainObject} window\n  * @property {string|null} window.title Any title for the jPicker window itself - displays\n  * \"Drag Markers To Pick A Color\" if left null\n  * @property {PlainObject} window.effects\n  * @property {\"slide\"|\"show\"|\"fade\"} window.effects.type Effect used to show/hide an expandable picker\n  * @property {PlainObject} window.effects.speed\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.show Duration of \"show\" effect. Time in milliseconds.\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.hide Duration of \"hide\" effect. Time in milliseconds\n  * @property {PlainObject} window.position\n  * @property {\"left\"|\"center\"|\"right\"|\"screenCenter\"|Float} window.position.x Relative px value\n  * @property {\"top\"|\"bottom\"|\"center\"|Float} window.position.y Relative px value\n  * @property {boolean} window.expandable Defaults to large static picker - set to `true` to make an expandable\n  * picker (small icon with popup) - set automatically when binded to input element\n  * @property {boolean} window.liveUpdate Set `false` if you want the user to have to click \"OK\" before the\n  * binded input box updates values (always `true` for expandable picker)\n  * @property {boolean} window.alphaSupport Set to `true` to enable alpha picking\n  * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do\n  * not map directly to percentage integers - range 0-2\n  * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing\n  * @property {PlainObject} color\n  * @property {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} color.mode Symbols stand for \"h\" (hue), \"s\" (saturation), \"v\" (value), \"r\" (red), \"g\" (green), \"b\" (blue), \"a\" (alpha)\n  * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {Color[]|string[]} color.quickList The quick pick color list\n  * Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {PlainObject} images\n  * @property {string} images.clientPath Path to image files\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorMap\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorBar\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} images.picker\n  * @property {PlainObject} localization alter these to change the text presented by the picker (e.g. different language)\n  * @property {PlainObject} localization.text\n  * @property {string} localization.text.title\n  * @property {string} localization.text.newColor\n  * @property {string} localization.text.currentColor\n  * @property {string} localization.text.ok\n  * @property {string} localization.text.cancel\n  * @property {PlainObject} localization.tooltips\n  * @property {PlainObject} localization.tooltips.colors\n  * @property {string} localization.tooltips.colors.newColor\n  * @property {string} localization.tooltips.colors.currentColor\n  * @property {PlainObject} localization.tooltips.buttons\n  * @property {string} localization.tooltips.buttons.ok\n  * @property {string} localization.tooltips.buttons.cancel\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.hue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.saturation\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.value\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.red\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.green\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.blue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.alpha\n  * @property {PlainObject} localization.tooltips.hex\n  * @property {string} localization.tooltips.hex.textbox\n  * @property {string} localization.tooltips.hex.alpha\n  */\n  /**\n  * jPicker defaults - you can change anything in this section (such as the\n  * clientPath to your images) without fear of breaking the program\n  * @namespace {external:jQuery.fn.jPickerOptions} defaults\n  * @memberof external:jQuery.fn.$.fn.jPicker\n  * @borrows external:jQuery.fn.jPickerOptions as external:jQuery.fn.jPicker.defaults\n  * @see Source for all of the values\n  */\n  $.fn.jPicker.defaults = {\n    window: {\n      title: null,\n      effects: {\n        type: 'slide',\n        speed: {\n          show: 'slow',\n          hide: 'fast'\n        }\n      },\n      position: {\n        x: 'screenCenter',\n        y: 'top'\n      },\n      expandable: false,\n      liveUpdate: true,\n      alphaSupport: false,\n      alphaPrecision: 0,\n      updateInputColor: true\n    },\n    color: {\n      mode: 'h',\n      active: new Color({ahex: '#ffcc00ff'}),\n      quickList: [\n        new Color({h: 360, s: 33, v: 100}),\n        new Color({h: 360, s: 66, v: 100}),\n        new Color({h: 360, s: 100, v: 100}),\n        new Color({h: 360, s: 100, v: 75}),\n        new Color({h: 360, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 100}),\n        new Color({h: 30, s: 33, v: 100}),\n        new Color({h: 30, s: 66, v: 100}),\n        new Color({h: 30, s: 100, v: 100}),\n        new Color({h: 30, s: 100, v: 75}),\n        new Color({h: 30, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 90}),\n        new Color({h: 60, s: 33, v: 100}),\n        new Color({h: 60, s: 66, v: 100}),\n        new Color({h: 60, s: 100, v: 100}),\n        new Color({h: 60, s: 100, v: 75}),\n        new Color({h: 60, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 80}),\n        new Color({h: 90, s: 33, v: 100}),\n        new Color({h: 90, s: 66, v: 100}),\n        new Color({h: 90, s: 100, v: 100}),\n        new Color({h: 90, s: 100, v: 75}),\n        new Color({h: 90, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 70}),\n        new Color({h: 120, s: 33, v: 100}),\n        new Color({h: 120, s: 66, v: 100}),\n        new Color({h: 120, s: 100, v: 100}),\n        new Color({h: 120, s: 100, v: 75}),\n        new Color({h: 120, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 60}),\n        new Color({h: 150, s: 33, v: 100}),\n        new Color({h: 150, s: 66, v: 100}),\n        new Color({h: 150, s: 100, v: 100}),\n        new Color({h: 150, s: 100, v: 75}),\n        new Color({h: 150, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 50}),\n        new Color({h: 180, s: 33, v: 100}),\n        new Color({h: 180, s: 66, v: 100}),\n        new Color({h: 180, s: 100, v: 100}),\n        new Color({h: 180, s: 100, v: 75}),\n        new Color({h: 180, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 40}),\n        new Color({h: 210, s: 33, v: 100}),\n        new Color({h: 210, s: 66, v: 100}),\n        new Color({h: 210, s: 100, v: 100}),\n        new Color({h: 210, s: 100, v: 75}),\n        new Color({h: 210, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 30}),\n        new Color({h: 240, s: 33, v: 100}),\n        new Color({h: 240, s: 66, v: 100}),\n        new Color({h: 240, s: 100, v: 100}),\n        new Color({h: 240, s: 100, v: 75}),\n        new Color({h: 240, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 20}),\n        new Color({h: 270, s: 33, v: 100}),\n        new Color({h: 270, s: 66, v: 100}),\n        new Color({h: 270, s: 100, v: 100}),\n        new Color({h: 270, s: 100, v: 75}),\n        new Color({h: 270, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 10}),\n        new Color({h: 300, s: 33, v: 100}),\n        new Color({h: 300, s: 66, v: 100}),\n        new Color({h: 300, s: 100, v: 100}),\n        new Color({h: 300, s: 100, v: 75}),\n        new Color({h: 300, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 0}),\n        new Color({h: 330, s: 33, v: 100}),\n        new Color({h: 330, s: 66, v: 100}),\n        new Color({h: 330, s: 100, v: 100}),\n        new Color({h: 330, s: 100, v: 75}),\n        new Color({h: 330, s: 100, v: 50}),\n        new Color()\n      ]\n    },\n    images: {\n      clientPath: '/jPicker/images/',\n      colorMap: {\n        width: 256,\n        height: 256,\n        arrow: {\n          file: 'mappoint.gif',\n          width: 15,\n          height: 15\n        }\n      },\n      colorBar: {\n        width: 20,\n        height: 256,\n        arrow: {\n          file: 'rangearrows.gif',\n          width: 20,\n          height: 7\n        }\n      },\n      picker: {\n        file: 'picker.gif',\n        width: 25,\n        height: 24\n      }\n    },\n    localization: {\n      text: {\n        title: 'Drag Markers To Pick A Color',\n        newColor: 'new',\n        currentColor: 'current',\n        ok: 'OK',\n        cancel: 'Cancel'\n      },\n      tooltips: {\n        colors: {\n          newColor: 'New Color - Press &ldquo;OK&rdquo; To Commit',\n          currentColor: 'Click To Revert To Original Color'\n        },\n        buttons: {\n          ok: 'Commit To This Color Selection',\n          cancel: 'Cancel And Revert To Original Color'\n        },\n        hue: {\n          radio: 'Set To &ldquo;Hue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Hue&rdquo; Value (0-360&deg;)'\n        },\n        saturation: {\n          radio: 'Set To &ldquo;Saturation&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Saturation&rdquo; Value (0-100%)'\n        },\n        value: {\n          radio: 'Set To &ldquo;Value&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Value&rdquo; Value (0-100%)'\n        },\n        red: {\n          radio: 'Set To &ldquo;Red&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Red&rdquo; Value (0-255)'\n        },\n        green: {\n          radio: 'Set To &ldquo;Green&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Green&rdquo; Value (0-255)'\n        },\n        blue: {\n          radio: 'Set To &ldquo;Blue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Blue&rdquo; Value (0-255)'\n        },\n        alpha: {\n          radio: 'Set To &ldquo;Alpha&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Alpha&rdquo; Value (0-100)'\n        },\n        hex: {\n          textbox: 'Enter A &ldquo;Hex&rdquo; Color Value (#000000-#ffffff)',\n          alpha: 'Enter A &ldquo;Alpha&rdquo; Value (#00-#ff)'\n        }\n      }\n    }\n  };\n  return $;\n};\n\nexport default jPicker;\n","/* globals jQuery */\n/**\n * Localizing script for SVG-edit UI\n * @module locale\n * @license MIT\n *\n * @copyright 2010 Narendra Sisodya\n * @copyright 2010 Alexis Deveria\n *\n */\n\n/**\n * Used, for example, in the ImageLibs extension, to present libraries (with name/URL/description) in order\n * @typedef {GenericArray.<module:locale.LocaleStrings>} module:locale.LocaleArray\n*/\n/**\n * The string keys of the object are two-letter language codes\n * @tutorial LocaleDocs\n * @typedef {PlainObject.<string, string|module:locale.LocaleStrings|module:locale.LocaleArray>} module:locale.LocaleStrings\n */\n// keyed to an array of objects with \"id\" and \"title\" or \"textContent\" properties\n/**\n * @typedef {PlainObject.<string, string>} module:locale.LocaleSelectorValue\n */\n\nimport {importSetGlobalDefault} from '../external/dynamic-import-polyfill/importModule.js';\n\nconst $ = jQuery;\n\nlet langParam;\n\n/**\n* @param {\"content\"|\"title\"} type\n* @param {module:locale.LocaleSelectorValue} obj\n* @param {boolean} ids\n* @returns {undefined}\n*/\nexport const setStrings = function (type, obj, ids) {\n  // Root element to look for element from\n  const parent = $('#svg_editor').parent();\n  Object.entries(obj).forEach(([sel, val]) => {\n    if (!val) { console.log(sel); }\n\n    if (ids) { sel = '#' + sel; }\n    const $elem = parent.find(sel);\n    if ($elem.length) {\n      const elem = parent.find(sel)[0];\n\n      switch (type) {\n      case 'content':\n        [...elem.childNodes].some((node) => {\n          if (node.nodeType === 3 && node.textContent.trim()) {\n            node.textContent = val;\n            return true;\n          }\n        });\n        break;\n\n      case 'title':\n        elem.title = val;\n        break;\n      }\n    } else {\n      console.log('Missing: ' + sel);\n    }\n  });\n};\n\n/**\n* The \"data\" property is generally set to an an array of objects with\n* \"id\" and \"title\" or \"textContent\" properties\n* @typedef {PlainObject} module:locale.AddLangExtensionLocaleData\n* @property {module:locale.LocaleStrings[]} data See {@tutorial LocaleDocs}\n*/\n\n/**\n* @interface module:locale.LocaleEditorInit\n*/\n/**\n * @function module:locale.LocaleEditorInit#addLangData\n * @param {string} langParam\n * @returns {module:locale.AddLangExtensionLocaleData}\n*/\n\nlet editor_;\n/**\n* @function init\n* @memberof module:locale\n* @param {module:locale.LocaleEditorInit} editor\n* @returns {undefined}\n*/\nexport const init = (editor) => {\n  editor_ = editor;\n};\n\n/**\n* @typedef {PlainObject} module:locale.LangAndData\n* @property {string} langParam\n* @property {module:locale.LocaleStrings} langData\n*/\n\n/**\n* @function module:locale.readLang\n* @param {module:locale.LocaleStrings} langData See {@tutorial LocaleDocs}\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @returns {Promise} Resolves to [`LangAndData`]{@link module:locale.LangAndData}\n*/\nexport const readLang = async function (langData) {\n  const more = await editor_.addLangData(langParam);\n  $.each(more, function (i, m) {\n    if (m.data) {\n      langData = $.merge(langData, m.data);\n    }\n  });\n\n  // Old locale file, do nothing for now.\n  if (!langData.tools) { return; }\n\n  const {\n    tools,\n    // misc,\n    properties, config, layers, common, ui\n  } = langData;\n\n  setStrings('content', {\n    // copyrightLabel: misc.powered_by, // Currently commented out in svg-editor.html\n    curve_segments: properties.curve_segments,\n    fitToContent: tools.fitToContent,\n    fit_to_all: tools.fit_to_all,\n    fit_to_canvas: tools.fit_to_canvas,\n    fit_to_layer_content: tools.fit_to_layer_content,\n    fit_to_sel: tools.fit_to_sel,\n\n    icon_large: config.icon_large,\n    icon_medium: config.icon_medium,\n    icon_small: config.icon_small,\n    icon_xlarge: config.icon_xlarge,\n    image_opt_embed: config.image_opt_embed,\n    image_opt_ref: config.image_opt_ref,\n    includedImages: config.included_images,\n\n    largest_object: tools.largest_object,\n\n    layersLabel: layers.layers,\n    page: tools.page,\n    relativeToLabel: tools.relativeTo,\n    selLayerLabel: layers.move_elems_to,\n    selectedPredefined: config.select_predefined,\n\n    selected_objects: tools.selected_objects,\n    smallest_object: tools.smallest_object,\n    straight_segments: properties.straight_segments,\n\n    svginfo_bg_url: config.editor_img_url + ':',\n    svginfo_bg_note: config.editor_bg_note,\n    svginfo_change_background: config.background,\n    svginfo_dim: config.doc_dims,\n    svginfo_editor_prefs: config.editor_prefs,\n    svginfo_height: common.height,\n    svginfo_icons: config.icon_size,\n    svginfo_image_props: config.image_props,\n    svginfo_lang: config.language,\n    svginfo_title: config.doc_title,\n    svginfo_width: common.width,\n\n    tool_docprops_cancel: common.cancel,\n    tool_docprops_save: common.ok,\n\n    tool_source_cancel: common.cancel,\n    tool_source_save: common.ok,\n\n    tool_prefs_cancel: common.cancel,\n    tool_prefs_save: common.ok,\n\n    sidepanel_handle: layers.layers.split('').join(' '),\n\n    tool_clear: tools.new_doc,\n    tool_docprops: tools.docprops,\n    tool_export: tools.export_img,\n    tool_import: tools.import_doc,\n    tool_open: tools.open_doc,\n    tool_save: tools.save_doc,\n\n    svginfo_units_rulers: config.units_and_rulers,\n    svginfo_rulers_onoff: config.show_rulers,\n    svginfo_unit: config.base_unit,\n\n    svginfo_grid_settings: config.grid,\n    svginfo_snap_onoff: config.snapping_onoff,\n    svginfo_snap_step: config.snapping_stepsize,\n    svginfo_grid_color: config.grid_color\n  }, true);\n\n  // Context menus\n  const opts = {};\n  $.each(['cut', 'copy', 'paste', 'paste_in_place', 'delete', 'group', 'ungroup', 'move_front', 'move_up', 'move_down', 'move_back'], function () {\n    opts['#cmenu_canvas a[href=\"#' + this + '\"]'] = tools[this];\n  });\n\n  $.each(['dupe', 'merge_down', 'merge_all'], function () {\n    opts['#cmenu_layers a[href=\"#' + this + '\"]'] = layers[this];\n  });\n\n  opts['#cmenu_layers a[href=\"#delete\"]'] = layers.del;\n\n  setStrings('content', opts);\n\n  setStrings('title', {\n    align_relative_to: tools.align_relative_to,\n    circle_cx: properties.circle_cx,\n    circle_cy: properties.circle_cy,\n    circle_r: properties.circle_r,\n    cornerRadiusLabel: properties.corner_radius,\n    ellipse_cx: properties.ellipse_cx,\n    ellipse_cy: properties.ellipse_cy,\n    ellipse_rx: properties.ellipse_rx,\n    ellipse_ry: properties.ellipse_ry,\n    fill_color: properties.fill_color,\n    font_family: properties.font_family,\n    idLabel: properties.id,\n    image_height: properties.image_height,\n    image_url: properties.image_url,\n    image_width: properties.image_width,\n    layer_delete: layers.del,\n    layer_down: layers.move_down,\n    layer_new: layers['new'],\n    layer_rename: layers.rename,\n    layer_moreopts: common.more_opts,\n    layer_up: layers.move_up,\n    line_x1: properties.line_x1,\n    line_x2: properties.line_x2,\n    line_y1: properties.line_y1,\n    line_y2: properties.line_y2,\n    linecap_butt: properties.linecap_butt,\n    linecap_round: properties.linecap_round,\n    linecap_square: properties.linecap_square,\n    linejoin_bevel: properties.linejoin_bevel,\n    linejoin_miter: properties.linejoin_miter,\n    linejoin_round: properties.linejoin_round,\n    main_icon: tools.main_menu,\n    palette: ui.palette_info,\n    zoom_panel: ui.zoom_level,\n    path_node_x: properties.node_x,\n    path_node_y: properties.node_y,\n    rect_height_tool: properties.rect_height,\n    rect_width_tool: properties.rect_width,\n    seg_type: properties.seg_type,\n    selLayerNames: layers.move_selected,\n    selected_x: properties.pos_x,\n    selected_y: properties.pos_y,\n    stroke_color: properties.stroke_color,\n    stroke_style: properties.stroke_style,\n    stroke_width: properties.stroke_width,\n    svginfo_title: config.doc_title,\n    text: properties.text_contents,\n    toggle_stroke_tools: ui.toggle_stroke_tools,\n    tool_add_subpath: tools.add_subpath,\n    tool_alignbottom: tools.align_bottom,\n    tool_aligncenter: tools.align_center,\n    tool_alignleft: tools.align_left,\n    tool_alignmiddle: tools.align_middle,\n    tool_alignright: tools.align_right,\n    tool_aligntop: tools.align_top,\n    tool_angle: properties.angle,\n    tool_blur: properties.blur,\n    tool_bold: properties.bold,\n    tool_circle: tools.mode_circle,\n    tool_clone: tools.clone,\n    tool_clone_multi: tools.clone,\n    tool_delete: tools.del,\n    tool_delete_multi: tools.del,\n    tool_ellipse: tools.mode_ellipse,\n    tool_fhellipse: tools.mode_fhellipse,\n    tool_fhpath: tools.mode_fhpath,\n    tool_fhrect: tools.mode_fhrect,\n    tool_font_size: properties.font_size,\n    tool_group_elements: tools.group_elements,\n    tool_make_link: tools.make_link,\n    tool_link_url: tools.set_link_url,\n    tool_image: tools.mode_image,\n    tool_italic: properties.italic,\n    tool_line: tools.mode_line,\n    tool_move_bottom: tools.move_bottom,\n    tool_move_top: tools.move_top,\n    tool_node_clone: tools.node_clone,\n    tool_node_delete: tools.node_delete,\n    tool_node_link: tools.node_link,\n    tool_opacity: properties.opacity,\n    tool_openclose_path: tools.openclose_path,\n    tool_path: tools.mode_path,\n    tool_position: tools.align_to_page,\n    tool_rect: tools.mode_rect,\n    tool_redo: tools.redo,\n    tool_reorient: tools.reorient_path,\n    tool_select: tools.mode_select,\n    tool_source: tools.source_save,\n    tool_square: tools.mode_square,\n    tool_text: tools.mode_text,\n    tool_topath: tools.to_path,\n    tool_undo: tools.undo,\n    tool_ungroup: tools.ungroup,\n    tool_wireframe: tools.wireframe_mode,\n    tool_zoom: tools.mode_zoom,\n    url_notice: tools.no_embed\n\n  }, true);\n\n  return {langParam, langData};\n};\n\n/**\n* @function module:locale.putLocale\n* @param {string} givenParam\n* @param {string[]} goodLangs\n* @param {{langPath: string}} conf\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n* @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @returns {Promise} Resolves to result of {@link module:locale.readLang}\n*/\nexport const putLocale = async function (givenParam, goodLangs, conf) {\n  if (givenParam) {\n    langParam = givenParam;\n  } else {\n    langParam = $.pref('lang');\n    if (!langParam) {\n      if (navigator.userLanguage) { // Explorer\n        langParam = navigator.userLanguage;\n      } else if (navigator.language) { // FF, Opera, ...\n        langParam = navigator.language;\n      }\n    }\n\n    console.log('Lang: ' + langParam);\n\n    // Set to English if language is not in list of good langs\n    if (!goodLangs.includes(langParam) && langParam !== 'test') {\n      langParam = 'en';\n    }\n\n    // don't bother on first run if language is English\n    // The following line prevents setLang from running\n    //    extensions which depend on updated uiStrings,\n    //    so commenting it out.\n    // if (langParam.startsWith('en')) {return;}\n  }\n\n  const url = conf.langPath + 'lang.' + langParam + '.js';\n  return readLang(\n    // Todo: Replace this with `return import(url);` when\n    //   `import()` widely supported\n    await importSetGlobalDefault(url, {\n      global: 'svgEditorLang_' + langParam.replace(/-/g, '_')\n    })\n  );\n};\n","function loadStylesheets(stylesheets, {\n    before: beforeDefault, after: afterDefault, favicon: faviconDefault,\n    canvas: canvasDefault, image: imageDefault = true,\n    acceptErrors\n} = {}) {\n    stylesheets = Array.isArray(stylesheets) ? stylesheets : [stylesheets];\n\n    function setupLink(stylesheetURL) {\n        let options = {};\n        if (Array.isArray(stylesheetURL)) {\n            [stylesheetURL, options = {}] = stylesheetURL;\n        }\n        let { favicon = faviconDefault } = options;\n        const {\n            before = beforeDefault,\n            after = afterDefault,\n            canvas = canvasDefault,\n            image = imageDefault\n        } = options;\n        function addLink() {\n            if (before) {\n                before.before(link);\n            } else if (after) {\n                after.after(link);\n            } else {\n                document.head.appendChild(link);\n            }\n        }\n\n        const link = document.createElement('link');\n        return new Promise((resolve, reject) => {\n            let rej = reject;\n            if (acceptErrors) {\n                rej = typeof acceptErrors === 'function' ? error => {\n                    acceptErrors({ error, stylesheetURL, options, resolve, reject });\n                } : resolve;\n            }\n            if (stylesheetURL.endsWith('.css')) {\n                favicon = false;\n            } else if (stylesheetURL.endsWith('.ico')) {\n                favicon = true;\n            }\n            if (favicon) {\n                link.rel = 'shortcut icon';\n                link.type = 'image/x-icon';\n\n                if (image === false) {\n                    link.href = stylesheetURL;\n                    addLink();\n                    resolve(link);\n                    return;\n                }\n\n                const cnv = document.createElement('canvas');\n                cnv.width = 16;\n                cnv.height = 16;\n                const context = cnv.getContext('2d');\n                const img = document.createElement('img');\n                img.addEventListener('error', error => {\n                    reject(error);\n                });\n                img.addEventListener('load', () => {\n                    context.drawImage(img, 0, 0);\n                    link.href = canvas ? cnv.toDataURL('image/x-icon') : stylesheetURL;\n                    addLink();\n                    resolve(link);\n                });\n                img.src = stylesheetURL;\n                return;\n            }\n            link.rel = 'stylesheet';\n            link.type = 'text/css';\n            link.href = stylesheetURL;\n            addLink();\n            link.addEventListener('error', error => {\n                rej(error);\n            });\n            link.addEventListener('load', () => {\n                resolve(link);\n            });\n        });\n    }\n\n    return Promise.all(stylesheets.map(setupLink));\n}\n\nexport default loadStylesheets;\n","/* globals jQuery */\n\nimport './touch.js';\nimport {NS} from './namespaces.js';\nimport {isWebkit, isChrome, isGecko, isIE, isMac, isTouch} from './browser.js';\nimport * as Utils from './utilities.js';\nimport {getTypeMap, convertUnit, isValidUnit} from './units.js';\nimport {\n  hasCustomHandler, getCustomHandler, injectExtendedContextMenuItemsIntoDom\n} from './contextmenu.js';\nimport {importSetGlobalDefault} from './external/dynamic-import-polyfill/importModule.js';\n\nimport SvgCanvas from './svgcanvas.js';\nimport Layer from './layer.js';\n\nimport jqPluginJSHotkeys from './js-hotkeys/jquery.hotkeys.min.js';\nimport jqPluginBBQ from './jquerybbq/jquery.bbq.min.js';\nimport jqPluginSVGIcons from './svgicons/jQuery.svgIcons.js';\nimport jqPluginJGraduate from './jgraduate/jQuery.jGraduate.js';\nimport jqPluginSpinBtn from './spinbtn/jQuery.SpinButton.js';\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport jqPluginContextMenu from './contextmenu/jQuery.contextMenu.js';\nimport jqPluginJPicker from './jgraduate/jQuery.jPicker.js';\nimport {\n  readLang, putLocale,\n  setStrings,\n  init as localeInit\n} from './locale/locale.js';\nimport loadStylesheets from './external/load-stylesheets/index-es.js';\n\n/**\n* The main module for the visual SVG Editor\n*\n* @license MIT\n*\n* @copyright 2010 Alexis Deveria\n* 2010 Pavol Rusnak\n* 2010 Jeff Schiller\n* 2010 Narendra Sisodiya\n* 2014 Brett Zamir\n* @exports module:SVGEditor\n* @borrows module:locale.putLocale as putLocale\n* @borrows module:locale.readLang as readLang\n* @borrows module:locale.setStrings as setStrings\n*/\nconst editor = {};\n\nconst $ = [\n  jqPluginJSHotkeys, jqPluginBBQ, jqPluginSVGIcons, jqPluginJGraduate,\n  jqPluginSpinBtn, jqPluginSVG, jqPluginContextMenu, jqPluginJPicker\n].reduce(($, cb) => cb($), jQuery);\n\n/*\nif (!$.loadingStylesheets) {\n  $.loadingStylesheets = [];\n}\n*/\nconst stylesheet = 'svg-editor.css';\nif (!$.loadingStylesheets.includes(stylesheet)) {\n  $.loadingStylesheets.push(stylesheet);\n}\nconst favicon = 'images/logo.png';\nif ($.loadingStylesheets.some((item) => {\n  return !Array.isArray(item) || item[0] !== favicon;\n})) {\n  $.loadingStylesheets.push([favicon, {favicon: true}]);\n}\n\n// EDITOR PROPERTIES: (defined below)\n//    curPrefs, curConfig, canvas, storage, uiStrings\n//\n// STATE MAINTENANCE PROPERTIES\n/**\n* @type {Float}\n*/\neditor.tool_scale = 1; // Dependent on icon size, so any use to making configurable instead? Used by `jQuery.SpinButton.js`\n/**\n* @type {Integer}\n*/\neditor.exportWindowCt = 0;\n/**\n* @type {boolean}\n*/\neditor.langChanged = false;\n/**\n* @type {boolean}\n*/\neditor.showSaveWarning = false;\n/**\n * Will be set to a boolean by `ext-storage.js`\n * @type {\"ignore\"|\"waiting\"|\"closed\"}\n*/\neditor.storagePromptState = 'ignore';\n\nconst callbacks = [],\n  /**\n  * @typedef {\"s\"|\"m\"|\"l\"|\"xl\"|Float} module:SVGEditor.IconSize\n  */\n  /**\n  * Preferences\n  * @interface module:SVGEditor.Prefs\n  * @property {string} [lang=\"en\"] Two-letter language code. The language must exist in the Editor Preferences language list. Defaults to \"en\" if `locale.js` detection does not detect another language.\n  * @property {module:SVGEditor.IconSize} [iconsize=\"s\"|\"m\"] Size of the toolbar icons. Will default to 's' if the window height is smaller than the minimum height and 'm' otherwise.\n  * @property {string} [bkgd_color=\"#FFF\"] Color hex for canvas background color. Defaults to white.\n  * @property {string} [bkgd_url=\"\"] Background raster image URL. This image will fill the background of the document; useful for tracing purposes.\n  * @property {\"embed\"|\"ref\"} [img_save=\"embed\"] Defines whether included raster images should be saved as Data URIs when possible, or as URL references. Settable in the Document Properties dialog.\n  * @property {boolean} [save_notice_done=false] Used to track alert status\n  * @property {boolean} [export_notice_done=false] Used to track alert status\n  * @todo `save_notice_done` and `export_notice_done` should be changed to flags rather than preferences\n  */\n  /**\n  * @namespace {module:SVGEditor.Prefs} defaultPrefs\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Prefs}\n  */\n  // The iteration algorithm for defaultPrefs does not currently support array/objects\n  defaultPrefs = /** @lends module:SVGEditor~defaultPrefs */ {\n    // EDITOR OPTIONS (DIALOG)\n    /**\n    * Default to \"en\" if locale.js detection does not detect another language\n    */\n    lang: '',\n    /**\n    * Will default to 's' if the window height is smaller than the minimum height and\n    * 'm' otherwise\n    */\n    iconsize: '',\n    bkgd_color: '#FFF',\n    bkgd_url: '',\n    // DOCUMENT PROPERTIES (DIALOG)\n    img_save: 'embed',\n    // ALERT NOTICES\n    // Only shows in UI as far as alert notices, but useful to remember, so keeping as pref\n    save_notice_done: false,\n    export_notice_done: false\n  },\n  /**\n  * @name module:SVGEditor~defaultExtensions\n  * @type {string[]}\n  */\n  defaultExtensions = [\n    'ext-connector.js',\n    'ext-eyedropper.js',\n    'ext-grid.js',\n    'ext-imagelib.js',\n    'ext-markers.js',\n    'ext-overview_window.js',\n    'ext-panning.js',\n    'ext-polygon.js',\n    'ext-shapes.js',\n    'ext-star.js',\n    'ext-storage.js'\n  ],\n  /**\n  * @typedef {\"@default\"|string} module:SVGEditor.Stylesheet `@default` will automatically load all of the default CSS paths for SVGEditor\n  */\n  /**\n  * @typedef {GenericArray} module:SVGEditor.XYDimensions\n  * @property {Integer} length 2\n  * @property {Float} 0\n  * @property {Float} 1\n  */\n  /**\n  * @tutorial ConfigOptions\n  * @interface module:SVGEditor.Config\n  * @property {string} [canvasName=\"default\"] Used to namespace storage provided via `ext-storage.js`; you can use this if you wish to have multiple independent instances of SVG Edit on the same domain\n  * @property {boolean} [no_save_warning=false] If `true`, prevents the warning dialog box from appearing when closing/reloading the page. Mostly useful for testing.\n  * @property {string} [imgPath=\"images/\"] The path where the SVG icons are located, with trailing slash. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [langPath=\"locale/\"] The path where the language files are located, with trailing slash. Default will be changed to `../dist/locale/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [extPath=\"extensions/\"] The path used for extension files, with trailing slash. Default will be changed to `../dist/extensions/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [canvgPath=\"canvg/\"] The path used for `canvg` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [jspdfPath=\"jspdf/\"] The path used for `jsPDF` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [extIconsPath=\"extensions/\"] The path used for extension icons, with trailing slash.\n  * @property {string} [jGraduatePath=\"jgraduate/images/\"] The path where jGraduate images are located. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {boolean} [preventAllURLConfig=false] Set to `true` to override the ability for URLs to set non-content configuration (including extension config). Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [preventURLContentLoading=false] Set to `true` to override the ability for URLs to set URL-based SVG content. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [lockExtensions=false] Set to `true` to override the ability for URLs to set their own extensions; disallowed in URL setting. There is no need for this when `preventAllURLConfig` is used. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [noDefaultExtensions=false] If set to `true`, prohibits automatic inclusion of default extensions (though \"extensions\" can still be used to add back any desired default extensions along with any other extensions). This can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n  * @property {boolean} [noStorageOnLoad=false] Some interaction with `ext-storage.js`; prevent even the loading of previously saved local storage.\n  * @property {boolean} [forceStorage=false] Some interaction with `ext-storage.js`; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not (and may be required by law in some regions)\n  * @property {boolean} [emptyStorageOnDecline=false] Used by `ext-storage.js`; empty any prior storage if the user declines to store\n  * @property {string[]} [extensions=module:SVGEditor~defaultExtensions] Extensions to load on startup. Use an array in `setConfig` and comma separated file names in the URL. Extension names must begin with \"ext-\". Note that as of version 2.7, paths containing \"/\", \"\\\", or \":\", are disallowed for security reasons. Although previous versions of this list would entirely override the default list, as of version 2.7, the defaults will always be added to this explicit list unless the configuration `noDefaultExtensions` is included.\n  * @property {module:SVGEditor.Stylesheet[]} [stylesheets=[\"@default\"]] An array of required stylesheets to load in parallel; include the value `\"@default\"` within this array to ensure all default stylesheets are loaded.\n  * @property {string[]} [allowedOrigins=[]] Used by `ext-xdomain-messaging.js` to indicate which origins are permitted for cross-domain messaging (e.g., between the embedded editor and main editor code). Besides explicit domains, one might add '*' to allow all domains (not recommended for privacy/data integrity of your user's content!), `window.location.origin` for allowing the same origin (should be safe if you trust all apps on your domain), 'null' to allow `file:///` URL usage\n  * @property {null|PlainObject} [colorPickerCSS=null] Object of CSS properties mapped to values (for jQuery) to apply to the color picker. See {@link http://api.jquery.com/css/#css-properties}. A `null` value (the default) will cause the CSS to default to `left` with a position equal to that of the `fill_color` or `stroke_color` element minus 140, and a `bottom` equal to 40\n  * @property {string} [paramurl] This was available via URL only. Allowed an un-encoded URL within the query string (use \"url\" or \"source\" with a data: URI instead)\n  * @property {Float} [canvas_expansion=3] The minimum area visible outside the canvas, as a multiple of the image dimensions. The larger the number, the more one can scroll outside the canvas.\n  * @property {PlainObject} [initFill] Init fill properties\n  * @property {string} [initFill.color=\"FF0000\"] The initial fill color. Must be a hex code string. Defaults to solid red.\n  * @property {Float} [initFill.opacity=1] The initial fill opacity. Must be a number between 0 and 1\n  * @property {PlainObject} [initStroke] Init stroke properties\n  * @property {Float} [initStroke.width=5] The initial stroke width. Must be a positive number.\n  * @property {string} [initStroke.color=\"000000\"] The initial stroke color. Must be a hex code. Defaults to solid black.\n  * @property {Float} [initStroke.opacity=1] The initial stroke opacity. Must be a number between 0 and 1.\n  * @property {PlainObject} text Text style properties\n  * @property {Float} [text.stroke_width=0] Text stroke width\n  * @property {Float} [text.font_size=24] Text font size\n  * @property {string} [text.font_family=\"serif\"] Text font family\n  * @property {Float} [initOpacity=1] Initial opacity (multiplied by 100)\n  * @property {module:SVGEditor.XYDimensions} [dimensions=[640, 480]] The default width/height of a new document. Use an array in `setConfig` (e.g., `[800, 600]`) and comma separated numbers in the URL.\n  * @property {boolean} [gridSnapping=false] Enable snap to grid by default. Set in Editor Options.\n  * @property {string} [gridColor=\"#000\"] Accepts hex, e.g., '#000'. Set in Editor Options. Defaults to black.\n  * @property {string} [baseUnit=\"px\"] Set in Editor Options.\n  * @property {Float} [snappingStep=10] Set the default grid snapping value. Set in Editor Options.\n  * @property {boolean} [showRulers=true] Initial state of ruler display (v2.6). Set in Editor Options.\n  * @property {string} [initTool=\"select\"] The initially selected tool. Must be either the ID of the button for the tool, or the ID without `tool_` prefix (e.g., \"select\").\n  * @property {boolean} [wireframe=false] Start in wireframe mode\n  * @property {boolean} [showlayers=false] Open the layers side-panel by default.\n  * @property {\"new\"|\"same\"} [exportWindowType=\"new\"] Can be \"new\" or \"same\" to indicate whether new windows will be generated for each export; the `window.name` of the export window is namespaced based on the `canvasName` (and incremented if \"new\" is selected as the type). Introduced 2.8.\n  * @property {boolean} [showGrid=false] Set by `ext-grid.js`; determines whether or not to show the grid by default\n  * @property {boolean} [show_outside_canvas=true] Defines whether or not elements outside the canvas should be visible. Set and used in `svgcanvas.js`.\n  * @property {boolean} [selectNew=true] If true, will replace the selection with the current element and automatically select element objects (when not in \"path\" mode) after they are created, showing their grips (v2.6). Set and used in `svgcanvas.js` (`mouseUp`).\n  * @todo Some others could be preferences as well (e.g., preventing URL changing of extensions, defaultExtensions, stylesheets, colorPickerCSS); Change the following to preferences and add pref controls where missing to the UI (e.g., `canvas_expansion`, `initFill`, `initStroke`, `text`, `initOpacity`, `dimensions`, `initTool`, `wireframe`, `showlayers`, `gridSnapping`, `gridColor`, `baseUnit`, `snappingStep`, `showRulers`, `exportWindowType`, `showGrid`, `show_outside_canvas`, `selectNew`)?\n  */\n  /**\n  * @namespace {module:SVGEditor.Config} defaultConfig\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Config}\n  */\n  defaultConfig = {\n    canvasName: 'default',\n    canvas_expansion: 3,\n    initFill: {\n      color: 'FF0000', // solid red\n      opacity: 1\n    },\n    initStroke: {\n      width: 5,\n      color: '000000', // solid black\n      opacity: 1\n    },\n    text: {\n      stroke_width: 0,\n      font_size: 24,\n      font_family: 'serif'\n    },\n    initOpacity: 1,\n    colorPickerCSS: null, // Defaults to 'left' with a position equal to that of the fill_color or stroke_color element minus 140, and a 'bottom' equal to 40\n    initTool: 'select',\n    exportWindowType: 'new', // 'same' (todo: also support 'download')\n    wireframe: false,\n    showlayers: false,\n    no_save_warning: false,\n    // PATH CONFIGURATION\n    // The following path configuration items are disallowed in the URL (as should any future path configurations)\n    langPath: 'locale/', // Default will be changed if this is a non-modular load\n    extPath: 'extensions/', // Default will be changed if this is a non-modular load\n    canvgPath: 'canvg/', // Default will be changed if this is a non-modular load\n    jspdfPath: 'jspdf/', // Default will be changed if this is a non-modular load\n    imgPath: 'images/',\n    jGraduatePath: 'jgraduate/images/',\n    extIconsPath: 'extensions/',\n    // DOCUMENT PROPERTIES\n    // Change the following to a preference (already in the Document Properties dialog)?\n    dimensions: [640, 480],\n    // EDITOR OPTIONS\n    // Change the following to preferences (already in the Editor Options dialog)?\n    gridSnapping: false,\n    gridColor: '#000',\n    baseUnit: 'px',\n    snappingStep: 10,\n    showRulers: true,\n    // URL BEHAVIOR CONFIGURATION\n    preventAllURLConfig: false,\n    preventURLContentLoading: false,\n    // EXTENSION CONFIGURATION (see also preventAllURLConfig)\n    lockExtensions: false, // Disallowed in URL setting\n    noDefaultExtensions: false, // noDefaultExtensions can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n    // EXTENSION-RELATED (GRID)\n    showGrid: false, // Set by ext-grid.js\n    // EXTENSION-RELATED (STORAGE)\n    noStorageOnLoad: false, // Some interaction with ext-storage.js; prevent even the loading of previously saved local storage\n    forceStorage: false, // Some interaction with ext-storage.js; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not\n    emptyStorageOnDecline: false // Used by ext-storage.js; empty any prior storage if the user declines to store\n  },\n  /**\n  * LOCALE\n  * @name module:SVGEditor.uiStrings\n  * @type {PlainObject}\n  */\n  uiStrings = editor.uiStrings = {};\n\nlet svgCanvas, urldata,\n  isReady = false,\n  customExportImage = false,\n  customExportPDF = false,\n  curPrefs = {},\n  // Note: The difference between Prefs and Config is that Prefs\n  //   can be changed in the UI and are stored in the browser,\n  //   while config cannot\n  curConfig = {\n    // We do not put on defaultConfig to simplify object copying\n    //   procedures (we obtain instead from defaultExtensions)\n    extensions: [],\n    stylesheets: [],\n    /**\n    * Can use `location.origin` to indicate the current\n    * origin. Can contain a '*' to allow all domains or 'null' (as\n    * a string) to support all `file:///` URLs. Cannot be set by\n    * URL for security reasons (not safe, at least for\n    * privacy or data integrity of SVG content).\n    * Might have been fairly safe to allow\n    *   `new URL(location.href).origin` by default but\n    *   avoiding it ensures some more security that even third\n    *   party apps on the same domain also cannot communicate\n    *   with this app by default.\n    * For use with `ext-xdomain-messaging.js`\n    * @todo We might instead make as a user-facing preference.\n    */\n    allowedOrigins: []\n  };\n\nfunction loadSvgString (str, callback) {\n  const success = svgCanvas.setSvgString(str) !== false;\n  callback = callback || $.noop;\n  if (success) {\n    callback(true); // eslint-disable-line standard/no-callback-literal\n  } else {\n    $.alert(uiStrings.notification.errorLoadingSVG, function () {\n      callback(false); // eslint-disable-line standard/no-callback-literal\n    });\n  }\n}\n\n/**\n * @function module:SVGEditor~getImportLocale\n * @param {string} defaultLang\n * @param {string} defaultName\n * @returns {module:SVGEditor~ImportLocale}\n */\nfunction getImportLocale ({defaultLang, defaultName}) {\n  /**\n   * @function module:SVGEditor~ImportLocale\n   * @param {string} [name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}\n   * @param {string} [lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}\n   * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}\n   */\n  return async function importLocale ({name = defaultName, lang = defaultLang} = {}) {\n    async function importLocale (lang) {\n      const url = `${curConfig.extPath}ext-locale/${name}/${lang}.js`;\n      return importSetGlobalDefault(url, {\n        global: `svgEditorExtensionLocale_${name}_${lang}`\n      });\n    }\n    try {\n      return await importLocale(lang);\n    } catch (err) {\n      return importLocale('en');\n    }\n  };\n}\n\n/**\n* EXPORTS\n*/\n\n/**\n* Store and retrieve preferences.\n* @param {string} key The preference name to be retrieved or set\n* @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.\n* @returns {string} If val is missing or falsey, the value of the previously stored preference will be returned.\n* @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?\n* @todo Review whether any remaining existing direct references to\n*  getting `curPrefs` can be changed to use `$.pref()` getting to ensure\n*  `defaultPrefs` fallback (also for sake of `allowInitialUserOverride`); specifically, `bkgd_color` could be changed so that\n*  the pref dialog has a button to auto-calculate background, but otherwise uses `$.pref()` to be able to get default prefs\n*  or overridable settings\n*/\n$.pref = function (key, val) {\n  if (val) {\n    curPrefs[key] = val;\n    /**\n    * @name curPrefs\n    * @memberof module:SVGEditor\n    * @implements {module:SVGEditor.Prefs}\n    */\n    editor.curPrefs = curPrefs; // Update exported value\n    return;\n  }\n  return (key in curPrefs) ? curPrefs[key] : defaultPrefs[key];\n};\n\n/*\n* EDITOR PUBLIC METHODS\n// Todo: Sort these methods per invocation order, ideally with init at the end\n// Todo: Prevent execution until init executes if dependent on it?\n*/\neditor.putLocale = putLocale;\neditor.readLang = readLang;\neditor.setStrings = setStrings;\n\n/**\n* Where permitted, sets canvas and/or `defaultPrefs` based on previous\n*  storage. This will override URL settings (for security reasons) but\n*  not `svgedit-config-iife.js` configuration (unless initial user\n*  overriding is explicitly permitted there via `allowInitialUserOverride`).\n* @todo Split `allowInitialUserOverride` into `allowOverrideByURL` and\n*  `allowOverrideByUserStorage` so `svgedit-config-iife.js` can disallow some\n*  individual items for URL setting but allow for user storage AND/OR\n*  change URL setting so that it always uses a different namespace,\n*  so it won't affect pre-existing user storage (but then if users saves\n*  that, it will then be subject to tampering\n* @returns {undefined}\n*/\neditor.loadContentAndPrefs = function () {\n  if (!curConfig.forceStorage &&\n    (curConfig.noStorageOnLoad ||\n        !document.cookie.match(/(?:^|;\\s*)store=(?:prefsAndContent|prefsOnly)/)\n    )\n  ) {\n    return;\n  }\n\n  // LOAD CONTENT\n  if (editor.storage && // Cookies do not have enough available memory to hold large documents\n    (curConfig.forceStorage ||\n      (!curConfig.noStorageOnLoad &&\n        document.cookie.match(/(?:^|;\\s*)store=prefsAndContent/))\n    )\n  ) {\n    const name = 'svgedit-' + curConfig.canvasName;\n    const cached = editor.storage.getItem(name);\n    if (cached) {\n      editor.loadFromString(cached);\n    }\n  }\n\n  // LOAD PREFS\n  for (const key in defaultPrefs) {\n    if (defaultPrefs.hasOwnProperty(key)) { // It's our own config, so we don't need to iterate up the prototype chain\n      const storeKey = 'svg-edit-' + key;\n      if (editor.storage) {\n        const val = editor.storage.getItem(storeKey);\n        if (val) {\n          defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)\n        }\n      } else if (window.widget) {\n        defaultPrefs[key] = window.widget.preferenceForKey(storeKey);\n      } else {\n        const result = document.cookie.match(new RegExp('(?:^|;\\\\s*)' + Utils.regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));\n        defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';\n      }\n    }\n  }\n};\n\n/**\n* Allows setting of preferences or configuration (including extensions).\n* @param {module:SVGEditor.Config|module:SVGEditor.Prefs} opts The preferences or configuration (including extensions). See the tutorial on {@tutorial ConfigOptions} for info on config and preferences.\n* @param {PlainObject} [cfgCfg] Describes configuration which applies to the\n*    particular batch of supplied options\n* @param {boolean} [cfgCfg.allowInitialUserOverride=false] Set to true if you wish\n*  to allow initial overriding of settings by the user via the URL\n*  (if permitted) or previously stored preferences (if permitted);\n*  note that it will be too late if you make such calls in extension\n*  code because the URL or preference storage settings will\n*   have already taken place.\n* @param {boolean} [cfgCfg.overwrite=true] Set to false if you wish to\n*  prevent the overwriting of prior-set preferences or configuration\n*  (URL settings will always follow this requirement for security\n*  reasons, so `svgedit-config-iife.js` settings cannot be overridden unless it\n*  explicitly permits via `allowInitialUserOverride` but extension config\n*  can be overridden as they will run after URL settings). Should\n*   not be needed in `svgedit-config-iife.js`.\n* @returns {undefined}\n*/\neditor.setConfig = function (opts, cfgCfg) {\n  cfgCfg = cfgCfg || {};\n  function extendOrAdd (cfgObj, key, val) {\n    if (cfgObj[key] && typeof cfgObj[key] === 'object') {\n      $.extend(true, cfgObj[key], val);\n    } else {\n      cfgObj[key] = val;\n    }\n  }\n  $.each(opts, function (key, val) {\n    if (opts.hasOwnProperty(key)) {\n      // Only allow prefs defined in defaultPrefs\n      if (defaultPrefs.hasOwnProperty(key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          curPrefs.hasOwnProperty(key)\n        )) {\n          return;\n        }\n        if (cfgCfg.allowInitialUserOverride === true) {\n          defaultPrefs[key] = val;\n        } else {\n          $.pref(key, val);\n        }\n      } else if (['extensions', 'stylesheets', 'allowedOrigins'].includes(key)) {\n        if (cfgCfg.overwrite === false &&\n          (\n            curConfig.preventAllURLConfig ||\n            ['allowedOrigins', 'stylesheets'].includes(key) ||\n            (key === 'extensions' && curConfig.lockExtensions)\n          )\n        ) {\n          return;\n        }\n        curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later\n      // Only allow other curConfig if defined in defaultConfig\n      } else if (defaultConfig.hasOwnProperty(key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          curConfig.hasOwnProperty(key)\n        )) {\n          return;\n        }\n        // Potentially overwriting of previously set config\n        if (curConfig.hasOwnProperty(key)) {\n          if (cfgCfg.overwrite === false) {\n            return;\n          }\n          extendOrAdd(curConfig, key, val);\n        } else {\n          if (cfgCfg.allowInitialUserOverride === true) {\n            extendOrAdd(defaultConfig, key, val);\n          } else {\n            if (defaultConfig[key] && typeof defaultConfig[key] === 'object') {\n              curConfig[key] = {};\n              $.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects\n            } else {\n              curConfig[key] = val;\n            }\n          }\n        }\n      }\n    }\n  });\n  /**\n  * @name curConfig\n  * @memberof module:SVGEditor\n  * @implements {module:SVGEditor.Config}\n  */\n  editor.curConfig = curConfig; // Update exported value\n};\n\n/**\n* All methods are optional\n* @interface module:SVGEditor.CustomHandler\n* @type {PlainObject}\n*/\n/**\n* Its responsibilities are:\n*  - invoke a file chooser dialog in 'open' mode\n*  - let user pick a SVG file\n*  - calls [svgCanvas.setSvgString()]{@link module:svgcanvas.SvgCanvas#setSvgString} with the string contents of that file.\n* Not passed any parameters.\n* @function module:SVGEditor.CustomHandler#open\n* @returns {undefined}\n*/\n/**\n* Its responsibilities are:\n*  - accept the string contents of the current document\n*  - invoke a file chooser dialog in 'save' mode\n*  - save the file to location chosen by the user\n* @function module:SVGEditor.CustomHandler#save\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:saved} svgStr A string of the SVG\n* @listens module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\n/**\n* Its responsibilities (with regard to the object it is supplied in its 2nd argument) are:\n*  - inform user of any issues supplied via the \"issues\" property\n*  - convert the \"svg\" property SVG string into an image for export;\n*    utilize the properties \"type\" (currently 'PNG', 'JPEG', 'BMP',\n*    'WEBP', 'PDF'), \"mimeType\", and \"quality\" (for 'JPEG' and 'WEBP'\n*    types) to determine the proper output.\n* @function module:SVGEditor.CustomHandler#exportImage\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exported} data\n* @listens module:svgcanvas.SvgCanvas#event:exported\n* @returns {undefined}\n*/\n/**\n* @function module:SVGEditor.CustomHandler#exportPDF\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exportedPDF} data\n* @listens module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {undefined}\n*/\n\n/**\n* Allows one to override default SVGEdit `open`, `save`, and\n* `export` editor behaviors.\n* @param {module:SVGEditor.CustomHandler} opts Extension mechanisms may call `setCustomHandlers` with three functions: `opts.open`, `opts.save`, and `opts.exportImage`\n* @returns {undefined}\n*/\neditor.setCustomHandlers = function (opts) {\n  editor.ready(function () {\n    if (opts.open) {\n      $('#tool_open > input[type=\"file\"]').remove();\n      $('#tool_open').show();\n      svgCanvas.open = opts.open;\n    }\n    if (opts.save) {\n      editor.showSaveWarning = false;\n      svgCanvas.bind('saved', opts.save);\n    }\n    if (opts.exportImage) {\n      customExportImage = opts.exportImage;\n      svgCanvas.bind('exported', customExportImage); // canvg and our RGBColor will be available to the method\n    }\n    if (opts.exportPDF) {\n      customExportPDF = opts.exportPDF;\n      svgCanvas.bind('exportedPDF', customExportPDF); // jsPDF and our RGBColor will be available to the method\n    }\n  });\n};\n\n/**\n* @param {boolean} arg\n* @returns {undefined}\n*/\neditor.randomizeIds = function (arg) {\n  return svgCanvas.randomizeIds(arg);\n};\n\n/**\n* Auto-run after a Promise microtask.\n* @returns {undefined}\n*/\neditor.init = function () {\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (!modularVersion) {\n    Object.assign(defaultConfig, {\n      langPath: '../dist/locale/',\n      extPath: '../dist/extensions/',\n      canvgPath: '../dist/',\n      jspdfPath: '../dist/'\n    });\n  }\n\n  // const host = location.hostname,\n  //  onWeb = host && host.includes('.');\n  // Some FF versions throw security errors here when directly accessing\n  try {\n    if ('localStorage' in window) { // && onWeb removed so Webkit works locally\n      /**\n      * The built-in interface implemented by `localStorage`\n      * @external Storage\n      */\n      /**\n      * @name storage\n      * @memberof module:SVGEditor\n      * @type {external:Storage}\n      */\n      editor.storage = localStorage;\n    }\n  } catch (err) {}\n\n  // Todo: Avoid const-defined functions and group functions together, etc. where possible\n  const goodLangs = [];\n  $('#lang_select option').each(function () {\n    goodLangs.push(this.value);\n  });\n\n  function setupCurPrefs () {\n    curPrefs = $.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set\n    // Export updated prefs\n    editor.curPrefs = curPrefs;\n  }\n  function setupCurConfig () {\n    curConfig = $.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set\n\n    // Now deal with extensions and other array config\n    if (!curConfig.noDefaultExtensions) {\n      curConfig.extensions = curConfig.extensions.concat(defaultExtensions);\n    }\n    // ...and remove any dupes\n    ['extensions', 'stylesheets', 'allowedOrigins'].forEach(function (cfg) {\n      curConfig[cfg] = $.grep(curConfig[cfg], function (n, i) { // Supposedly faster than filter per http://amandeep1986.blogspot.hk/2015/02/jquery-grep-vs-js-filter.html\n        return i === curConfig[cfg].indexOf(n);\n      });\n    });\n    // Export updated config\n    editor.curConfig = curConfig;\n  }\n  (() => {\n    // Load config/data from URL if given\n    let src, qstr;\n    urldata = $.deparam.querystring(true);\n    if (!$.isEmptyObject(urldata)) {\n      if (urldata.dimensions) {\n        urldata.dimensions = urldata.dimensions.split(',');\n      }\n\n      if (urldata.bkgd_color) {\n        urldata.bkgd_color = '#' + urldata.bkgd_color;\n      }\n\n      if (urldata.extensions) {\n        // For security reasons, disallow cross-domain or cross-folder extensions via URL\n        urldata.extensions = urldata.extensions.match(/[:/\\\\]/) ? '' : urldata.extensions.split(',');\n      }\n\n      // Disallowing extension paths via URL for\n      // security reasons, even for same-domain\n      // ones given potential to interact in undesirable\n      // ways with other script resources\n      [\n        'langPath', 'extPath', 'canvgPath', 'jspdfPath',\n        'imgPath', 'jGraduatePath', 'extIconsPath'\n      ].forEach(function (pathConfig) {\n        if (urldata[pathConfig]) {\n          delete urldata[pathConfig];\n        }\n      });\n\n      editor.setConfig(urldata, {overwrite: false}); // Note: source and url (as with storagePrompt later) are not set on config but are used below\n\n      setupCurConfig();\n\n      if (!curConfig.preventURLContentLoading) {\n        src = urldata.source;\n        qstr = $.param.querystring();\n        if (!src) { // urldata.source may have been null if it ended with '='\n          if (qstr.includes('source=data:')) {\n            src = qstr.match(/source=(data:[^&]*)/)[1];\n          }\n        }\n        if (src) {\n          if (src.startsWith('data:')) {\n            editor.loadFromDataURI(src);\n          } else {\n            editor.loadFromString(src);\n          }\n          return;\n        }\n        if (urldata.url) {\n          editor.loadFromURL(urldata.url);\n          return;\n        }\n      }\n      if (!urldata.noStorageOnLoad || curConfig.forceStorage) {\n        editor.loadContentAndPrefs();\n      }\n    } else {\n      setupCurConfig();\n      editor.loadContentAndPrefs();\n    }\n    setupCurPrefs();\n  })();\n\n  /**\n  * Called internally.\n  * @param {string|Element|external:jQuery} elem\n  * @param {string|external:jQuery} iconId\n  * @param {Float} forcedSize Not in use\n  * @returns {undefined}\n  */\n  const setIcon = editor.setIcon = function (elem, iconId, forcedSize) {\n    const icon = (typeof iconId === 'string') ? $.getSvgIcon(iconId, true) : iconId.clone();\n    if (!icon) {\n      console.log('NOTE: Icon image missing: ' + iconId);\n      return;\n    }\n    $(elem).empty().append(icon);\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n   * @fires module:svgcanvas.SvgCanvas#event:extensions_added\n   * @returns {Promise} Resolves to result of {@link module:locale.readLang}\n   */\n  const extAndLocaleFunc = async function () {\n    // const lang = ('lang' in curPrefs) ? curPrefs.lang : null;\n    const {langParam, langData} = await editor.putLocale(null, goodLangs, curConfig);\n    await setLang(langParam, langData);\n\n    try {\n      await Promise.all(\n        curConfig.extensions.map(async (extname) => {\n          const extName = extname.match(/^ext-(.+)\\.js/);\n          if (!extName) { // Ensure URL cannot specify some other unintended file in the extPath\n            return;\n          }\n          const url = curConfig.extPath + extname;\n          // Todo: Replace this with `return import(url);` when\n          //   `import()` widely supported\n          /**\n           * @tutorial ExtensionDocs\n           * @typedef {PlainObject} module:SVGEditor.ExtensionObject\n           * @property {string} [name] Name of the extension. Used internally; no need for i18n. Defaults to extension name without beginning \"ext-\" or ending \".js\".\n           * @property {module:svgcanvas.ExtensionInitCallback} [init]\n           */\n          try {\n            /**\n             * @type {module:SVGEditor.ExtensionObject}\n             */\n            const imported = await importSetGlobalDefault(url, {\n              global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')\n            });\n            const {name = extName[1], init} = imported;\n            const importLocale = getImportLocale({defaultLang: langParam, defaultName: name});\n            return editor.addExtension(name, (init && init.bind(editor)), importLocale);\n          } catch (err) {\n            console.log(err);\n            console.error('Extension failed to load: ' + extname + '; ' + err);\n          }\n        })\n      );\n      svgCanvas.bind('extensions_added',\n        /**\n        * @param {external:Window} win\n        * @param {module:svgcanvas.SvgCanvas#event:extensions_added} data\n        * @listens module:svgcanvas.SvgCanvas#event:extensions_added\n        * @returns {undefined}\n        */\n        (win, data) => {\n          extensionsAdded = true;\n          Actions.setAll();\n\n          $('.flyout_arrow_horiz:empty').each(function () {\n            $(this).append($.getSvgIcon('arrow_right', true).width(5).height(5));\n          });\n\n          if (editor.storagePromptState === 'ignore') {\n            updateCanvas(true);\n          }\n\n          messageQueue.forEach(\n            /**\n             * @param {module:svgcanvas.SvgCanvas#event:message} messageObj\n             * @fires module:svgcanvas.SvgCanvas#event:message\n             * @returns {undefined}\n             */\n            (messageObj) => {\n              svgCanvas.call('message', messageObj);\n            }\n          );\n        }\n      );\n      svgCanvas.call('extensions_added');\n    } catch (err) {\n      console.log(err);\n    }\n  };\n\n  const stateObj = {tool_scale: editor.tool_scale};\n\n  const setFlyoutPositions = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      const {left, top} = shower.offset();\n      const w = shower.outerWidth();\n      $(this).css({left: (left + w) * editor.tool_scale, top});\n    });\n  };\n\n  const uaPrefix = (function () {\n    const regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;\n    const someScript = document.getElementsByTagName('script')[0];\n    for (const prop in someScript.style) {\n      if (regex.test(prop)) {\n        // test is faster than match, so it's better to perform\n        // that on the lot and match only when necessary\n        return prop.match(regex)[0];\n      }\n    }\n    // Nothing found so far?\n    if ('WebkitOpacity' in someScript.style) { return 'Webkit'; }\n    if ('KhtmlOpacity' in someScript.style) { return 'Khtml'; }\n\n    return '';\n  }());\n\n  const scaleElements = function (elems, scale) {\n    // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused\n    const sides = ['top', 'left', 'bottom', 'right'];\n\n    elems.each(function () {\n      // Handled in CSS\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const el = $(this);\n      const w = el.outerWidth() * (scale - 1);\n      const h = el.outerHeight() * (scale - 1);\n      // const margins = {}; // Currently unused\n\n      for (let i = 0; i < 4; i++) {\n        const s = sides[i];\n        let cur = el.data('orig_margin-' + s);\n        if (cur == null) {\n          cur = parseInt(el.css('margin-' + s), 10);\n          // Cache the original margin\n          el.data('orig_margin-' + s, cur);\n        }\n        let val = cur * scale;\n        if (s === 'right') {\n          val += w;\n        } else if (s === 'bottom') {\n          val += h;\n        }\n\n        el.css('margin-' + s, val);\n        // el.css('outline', '1px solid red');\n      }\n    });\n  };\n\n  /**\n  * Called internally.\n  * @param {module:SVGEditor.IconSize} size\n  * @returns {undefined}\n  */\n  const setIconSize = editor.setIconSize = function (size) {\n    // const elems = $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open');\n    const selToscale = '#tools_top .toolset, #editor_panel > *, #history_panel > *,' +\n  '        #main_button, #tools_left > *, #path_node_panel > *, #multiselected_panel > *,' +\n  '        #g_panel > *, #tool_font_size > *, .tools_flyout';\n\n    const elems = $(selToscale);\n\n    let scale = 1;\n    if (typeof size === 'number') {\n      scale = size;\n    } else {\n      const iconSizes = {s: 0.75, m: 1, l: 1.25, xl: 1.5};\n      scale = iconSizes[size];\n    }\n\n    stateObj.tool_scale = editor.tool_scale = scale;\n\n    setFlyoutPositions();\n    // $('.tools_flyout').each(function () {\n    //   const pos = $(this).position();\n    //   console.log($(this), pos.left+(34 * scale));\n    //   $(this).css({left: pos.left+(34 * scale), top: pos.top+(77 * scale)});\n    //   console.log('l', $(this).css('left'));\n    // });\n    //\n    // const scale = .75;\n\n    const hiddenPs = elems.parents(':hidden');\n    hiddenPs.css('visibility', 'hidden').show();\n    scaleElements(elems, scale);\n    hiddenPs.css('visibility', 'visible').hide();\n    // return;\n\n    $.pref('iconsize', size);\n    $('#iconsize').val(size);\n\n    // Change icon size\n    // $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open')\n    // .find('> svg, > img').each(function () {\n    //   this.setAttribute('width',size_num);\n    //   this.setAttribute('height',size_num);\n    // });\n    //\n    // $.resizeSvgIcons({\n    //   '.flyout_arrow_horiz > svg, .flyout_arrow_horiz > img': size_num / 5,\n    //   '#logo > svg, #logo > img': size_num * 1.3,\n    //   '#tools_bottom .icon_label > *': (size_num === 16 ? 18 : size_num * .75)\n    // });\n    // if (size != 's') {\n    //   $.resizeSvgIcons({'#layerbuttons svg, #layerbuttons img': size_num * .6});\n    // }\n\n    // Note that all rules will be prefixed with '#svg_editor' when parsed\n    const cssResizeRules = {\n      // '.tool_button,\\\n      // .push_button,\\\n      // .tool_button_current,\\\n      // .push_button_pressed,\\\n      // .disabled,\\\n      // .icon_label,\\\n      // .tools_flyout .tool_button': {\n      //   width: {s: '16px', l: '32px', xl: '48px'},\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   padding: {s: '1px', l: '2px', xl: '3px'}\n      // },\n      // '.tool_sep': {\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   margin: {s: '2px 2px', l: '2px 5px', xl: '2px 8px'}\n      // },\n      // '#main_icon': {\n      //   width: {s: '31px', l: '53px', xl: '75px'},\n      //   height: {s: '22px', l: '42px', xl: '64px'}\n      // },\n      '#tools_top': {\n        left: 50 + $('#main_button').width(),\n        height: 72\n      },\n      '#tools_left': {\n        width: 31,\n        top: 74\n      },\n      'div#workarea': {\n        left: 38,\n        top: 74\n      }\n      // '#tools_bottom': {\n      //   left: {s: '27px', l: '46px', xl: '65px'},\n      //   height: {s: '58px', l: '98px', xl: '145px'}\n      // },\n      // '#color_tools': {\n      //   'border-spacing': {s: '0 1px'},\n      //   'margin-top': {s: '-1px'}\n      // },\n      // '#color_tools .icon_label': {\n      //   width: {l:'43px', xl: '60px'}\n      // },\n      // '.color_tool': {\n      //   height: {s: '20px'}\n      // },\n      // '#tool_opacity': {\n      //   top: {s: '1px'},\n      //   height: {s: 'auto', l:'auto', xl:'auto'}\n      // },\n      // '#tools_top input, #tools_bottom input': {\n      //   'margin-top': {s: '2px', l: '4px', xl: '5px'},\n      //   height: {s: 'auto', l: 'auto', xl: 'auto'},\n      //   border: {s: '1px solid #555', l: 'auto', xl: 'auto'},\n      //   'font-size': {s: '.9em', l: '1.2em', xl: '1.4em'}\n      // },\n      // '#zoom_panel': {\n      //   'margin-top': {s: '3px', l: '4px', xl: '5px'}\n      // },\n      // '#copyright, #tools_bottom .label': {\n      //   'font-size': {l: '1.5em', xl: '2em'},\n      //   'line-height': {s: '15px'}\n      // },\n      // '#tools_bottom_2': {\n      //   width: {l: '295px', xl: '355px'},\n      //   top: {s: '4px'}\n      // },\n      // '#tools_top > div, #tools_top': {\n      //   'line-height': {s: '17px', l: '34px', xl: '50px'}\n      // },\n      // '.dropdown button': {\n      //   height: {s: '18px', l: '34px', xl: '40px'},\n      //   'line-height': {s: '18px', l: '34px', xl: '40px'},\n      //   'margin-top': {s: '3px'}\n      // },\n      // '#tools_top label, #tools_bottom label': {\n      //   'font-size': {s: '1em', l: '1.5em', xl: '2em'},\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // 'div.toolset': {\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // '#tool_bold, #tool_italic': {\n      //   'font-size': {s: '1.5em', l: '3em', xl: '4.5em'}\n      // },\n      // '#sidepanels': {\n      //   top: {s: '50px', l: '88px', xl: '125px'},\n      //   bottom: {s: '51px', l: '68px', xl: '65px'}\n      // },\n      // '#layerbuttons': {\n      //   width: {l: '130px', xl: '175px'},\n      //   height: {l: '24px', xl: '30px'}\n      // },\n      // '#layerlist': {\n      //   width: {l: '128px', xl: '150px'}\n      // },\n      // '.layer_button': {\n      //   width: {l: '19px', xl: '28px'},\n      //   height: {l: '19px', xl: '28px'}\n      // },\n      // 'input.spin-button': {\n      //   'background-image': {l: 'url('images/spinbtn_updn_big.png')', xl: 'url('images/spinbtn_updn_big.png')'},\n      //   'background-position': {l: '100% -5px', xl: '100% -2px'},\n      //   'padding-right': {l: '24px', xl: '24px' }\n      // },\n      // 'input.spin-button.up': {\n      //   'background-position': {l: '100% -45px', xl: '100% -42px'}\n      // },\n      // 'input.spin-button.down': {\n      //   'background-position': {l: '100% -85px', xl: '100% -82px'}\n      // },\n      // '#position_opts': {\n      //   width: {all: (size_num*4) +'px'}\n      // }\n    };\n\n    let ruleElem = $('#tool_size_rules');\n    if (!ruleElem.length) {\n      ruleElem = $('<style id=\"tool_size_rules\"></style>').appendTo('head');\n    } else {\n      ruleElem.empty();\n    }\n\n    if (size !== 'm') {\n      let styleStr = '';\n      $.each(cssResizeRules, function (selector, rules) {\n        selector = '#svg_editor ' + selector.replace(/,/g, ', #svg_editor');\n        styleStr += selector + '{';\n        $.each(rules, function (prop, values) {\n          let val;\n          if (typeof values === 'number') {\n            val = (values * scale) + 'px';\n          } else if (values[size] || values.all) {\n            val = (values[size] || values.all);\n          }\n          styleStr += (prop + ':' + val + ';');\n        });\n        styleStr += '}';\n      });\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const prefix = '-' + uaPrefix.toLowerCase() + '-';\n      styleStr += (selToscale + '{' + prefix + 'transform: scale(' + scale + ');}' +\n        ' #svg_editor div.toolset .toolset {' + prefix + 'transform: scale(1); margin: 1px !important;}' + // Hack for markers\n        ' #svg_editor .ui-slider {' + prefix + 'transform: scale(' + (1 / scale) + ');}' // Hack for sliders\n      );\n      ruleElem.text(styleStr);\n    }\n\n    setFlyoutPositions();\n  };\n  $.svgIcons(curConfig.imgPath + 'svg_edit_icons.svg', {\n    w: 24, h: 24,\n    id_match: false,\n    no_img: !isWebkit(), // Opera & Firefox 4 gives odd behavior w/images\n    fallback_path: curConfig.imgPath,\n    fallback: {\n      logo: 'logo.png',\n\n      select: 'select.png',\n      select_node: 'select_node.png',\n\n      square: 'square.png',\n      rect: 'rect.png',\n      fh_rect: 'freehand-square.png',\n      circle: 'circle.png',\n      ellipse: 'ellipse.png',\n      fh_ellipse: 'freehand-circle.png',\n      pencil: 'fhpath.png',\n      pen: 'line.png',\n      text: 'text.png',\n      path: 'path.png',\n      add_subpath: 'add_subpath.png',\n      close_path: 'closepath.png',\n      open_path: 'openpath.png',\n\n      image: 'image.png',\n      zoom: 'zoom.png',\n\n      arrow_right: 'flyouth.png',\n      arrow_right_big: 'arrow_right_big.png',\n      arrow_down: 'dropdown.gif',\n      fill: 'fill.png',\n      stroke: 'stroke.png',\n      opacity: 'opacity.png',\n\n      new_image: 'clear.png',\n      save: 'save.png',\n      export: 'export.png',\n      open: 'open.png',\n      import: 'import.png',\n      docprops: 'document-properties.png',\n      source: 'source.png',\n      wireframe: 'wireframe.png',\n\n      undo: 'undo.png',\n      redo: 'redo.png',\n\n      clone: 'clone.png',\n      delete: 'delete.png',\n      go_up: 'go-up.png',\n      go_down: 'go-down.png',\n      context_menu: 'context_menu.png',\n      move_bottom: 'move_bottom.png',\n      move_top: 'move_top.png',\n      to_path: 'to_path.png',\n      link_controls: 'link_controls.png',\n      reorient: 'reorient.png',\n      group_elements: 'shape_group_elements.png',\n\n      ungroup: 'shape_ungroup.png',\n      unlink_use: 'unlink_use.png',\n      width: 'width.png',\n      height: 'height.png',\n      c_radius: 'c_radius.png',\n      angle: 'angle.png',\n      blur: 'blur.png',\n      fontsize: 'fontsize.png',\n      align: 'align.png',\n\n      align_left: 'align-left.png',\n      align_center: 'align-center.png',\n      align_right: 'align-right.png',\n      align_top: 'align-top.png',\n      align_middle: 'align-middle.png',\n      align_bottom: 'align-bottom.png',\n\n      linecap_butt: 'linecap_butt.png',\n      linecap_square: 'linecap_square.png',\n      linecap_round: 'linecap_round.png',\n      linejoin_miter: 'linejoin_miter.png',\n      linejoin_bevel: 'linejoin_bevel.png',\n      linejoin_round: 'linejoin_round.png',\n      eye: 'eye.png',\n      no_color: 'no_color.png',\n\n      ok: 'save.png',\n      cancel: 'cancel.png',\n      warning: 'warning.png',\n\n      node_delete: 'node_delete.png',\n      node_clone: 'node_clone.png',\n\n      globe_link: 'globe_link.png'\n    },\n    placement: {\n      '#logo': 'logo',\n\n      '#tool_clear div,#layer_new': 'new_image',\n      '#tool_save div': 'save',\n      '#tool_export div': 'export',\n      '#tool_open div div': 'open',\n      '#tool_import div div': 'import',\n      '#tool_source': 'source',\n      '#tool_docprops > div': 'docprops',\n      '#tool_wireframe': 'wireframe',\n\n      '#tool_undo': 'undo',\n      '#tool_redo': 'redo',\n\n      '#tool_select': 'select',\n      '#tool_fhpath': 'pencil',\n      '#tool_line': 'pen',\n      '#tool_rect,#tools_rect_show': 'rect',\n      '#tool_square': 'square',\n      '#tool_fhrect': 'fh_rect',\n      '#tool_ellipse,#tools_ellipse_show': 'ellipse',\n      '#tool_circle': 'circle',\n      '#tool_fhellipse': 'fh_ellipse',\n      '#tool_path': 'path',\n      '#tool_text,#layer_rename': 'text',\n      '#tool_image': 'image',\n      '#tool_zoom': 'zoom',\n\n      '#tool_clone,#tool_clone_multi': 'clone',\n      '#tool_node_clone': 'node_clone',\n      '#layer_delete,#tool_delete,#tool_delete_multi': 'delete',\n      '#tool_node_delete': 'node_delete',\n      '#tool_add_subpath': 'add_subpath',\n      '#tool_openclose_path': 'open_path',\n      '#tool_move_top': 'move_top',\n      '#tool_move_bottom': 'move_bottom',\n      '#tool_topath': 'to_path',\n      '#tool_node_link': 'link_controls',\n      '#tool_reorient': 'reorient',\n      '#tool_group_elements': 'group_elements',\n      '#tool_ungroup': 'ungroup',\n      '#tool_unlink_use': 'unlink_use',\n\n      '#tool_alignleft, #tool_posleft': 'align_left',\n      '#tool_aligncenter, #tool_poscenter': 'align_center',\n      '#tool_alignright, #tool_posright': 'align_right',\n      '#tool_aligntop, #tool_postop': 'align_top',\n      '#tool_alignmiddle, #tool_posmiddle': 'align_middle',\n      '#tool_alignbottom, #tool_posbottom': 'align_bottom',\n      '#cur_position': 'align',\n\n      '#linecap_butt,#cur_linecap': 'linecap_butt',\n      '#linecap_round': 'linecap_round',\n      '#linecap_square': 'linecap_square',\n\n      '#linejoin_miter,#cur_linejoin': 'linejoin_miter',\n      '#linejoin_round': 'linejoin_round',\n      '#linejoin_bevel': 'linejoin_bevel',\n\n      '#url_notice': 'warning',\n\n      '#layer_up': 'go_up',\n      '#layer_down': 'go_down',\n      '#layer_moreopts': 'context_menu',\n      '#layerlist td.layervis': 'eye',\n\n      '#tool_source_save,#tool_docprops_save,#tool_prefs_save': 'ok',\n      '#tool_source_cancel,#tool_docprops_cancel,#tool_prefs_cancel': 'cancel',\n\n      '#rwidthLabel, #iwidthLabel': 'width',\n      '#rheightLabel, #iheightLabel': 'height',\n      '#cornerRadiusLabel span': 'c_radius',\n      '#angleLabel': 'angle',\n      '#linkLabel,#tool_make_link,#tool_make_link_multi': 'globe_link',\n      '#zoomLabel': 'zoom',\n      '#tool_fill label': 'fill',\n      '#tool_stroke .icon_label': 'stroke',\n      '#group_opacityLabel': 'opacity',\n      '#blurLabel': 'blur',\n      '#font_sizeLabel': 'fontsize',\n\n      '.flyout_arrow_horiz': 'arrow_right',\n      '.dropdown button, #main_button .dropdown': 'arrow_down',\n      '#palette .palette_item:first, #fill_bg, #stroke_bg': 'no_color'\n    },\n    resize: {\n      '#logo .svg_icon': 28,\n      '.flyout_arrow_horiz .svg_icon': 5,\n      '.layer_button .svg_icon, #layerlist td.layervis .svg_icon': 14,\n      '.dropdown button .svg_icon': 7,\n      '#main_button .dropdown .svg_icon': 9,\n      '.palette_item:first .svg_icon': 15,\n      '#fill_bg .svg_icon, #stroke_bg .svg_icon': 16,\n      '.toolbar_button button .svg_icon': 16,\n      '.stroke_tool div div .svg_icon': 20,\n      '#tools_bottom label .svg_icon': 18\n    },\n    callback (icons) {\n      $('.toolbar_button button > svg, .toolbar_button button > img').each(function () {\n        $(this).parent().prepend(this);\n      });\n\n      const tleft = $('#tools_left');\n\n      let minHeight;\n      if (tleft.length) {\n        minHeight = tleft.offset().top + tleft.outerHeight();\n      }\n\n      const size = $.pref('iconsize');\n      editor.setIconSize(size || ($(window).height() < minHeight ? 's' : 'm'));\n\n      // Look for any missing flyout icons from plugins\n      $('.tools_flyout').each(function () {\n        const shower = $('#' + this.id + '_show');\n        const sel = shower.attr('data-curopt');\n        // Check if there's an icon here\n        if (!shower.children('svg, img').length) {\n          const clone = $(sel).children().clone();\n          if (clone.length) {\n            clone[0].removeAttribute('style'); // Needed for Opera\n            shower.append(clone);\n          }\n        }\n      });\n\n      function getStylesheetPriority (stylesheet) {\n        switch (stylesheet) {\n        case 'jgraduate/css/jPicker.css':\n          return 1;\n        case 'jgraduate/css/jGraduate.css':\n          return 2;\n        case 'svg-editor.css':\n          return 3;\n        case 'spinbtn/jQuery.SpinButton.css':\n          return 4;\n        default:\n          return Infinity;\n        }\n      }\n      let stylesheets = $.loadingStylesheets.sort((a, b) => {\n        const priorityA = getStylesheetPriority(a);\n        const priorityB = getStylesheetPriority(b);\n        if (priorityA === priorityB) {\n          return 0;\n        }\n        return priorityA > priorityB;\n      });\n      if (curConfig.stylesheets.length) {\n        // Ensure a copy with unique items\n        stylesheets = [...new Set(curConfig.stylesheets)];\n        const idx = stylesheets.indexOf('@default');\n        if (idx > -1) {\n          stylesheets.splice(idx, 1, ...$.loadingStylesheets);\n        }\n      }\n      loadStylesheets(stylesheets, {acceptErrors: ({stylesheetURL, reject, resolve}) => {\n        if ($.loadingStylesheets.includes(stylesheetURL)) {\n          reject(new Error(`Missing expected stylesheet: ${stylesheetURL}`));\n          return;\n        }\n        resolve();\n      }}).then(() => {\n        $('#svg_container')[0].style.visibility = 'visible';\n        editor.runCallbacks();\n      });\n    }\n  });\n\n  /**\n  * @name module:SVGEditor.canvas\n  * @type {module:svgcanvas.SvgCanvas}\n  */\n  editor.canvas = svgCanvas = new SvgCanvas(\n    document.getElementById('svgcanvas'),\n    curConfig\n  );\n  const palette = [ // Todo: Make into configuration item?\n      '#000000', '#3f3f3f', '#7f7f7f', '#bfbfbf', '#ffffff',\n      '#ff0000', '#ff7f00', '#ffff00', '#7fff00',\n      '#00ff00', '#00ff7f', '#00ffff', '#007fff',\n      '#0000ff', '#7f00ff', '#ff00ff', '#ff007f',\n      '#7f0000', '#7f3f00', '#7f7f00', '#3f7f00',\n      '#007f00', '#007f3f', '#007f7f', '#003f7f',\n      '#00007f', '#3f007f', '#7f007f', '#7f003f',\n      '#ffaaaa', '#ffd4aa', '#ffffaa', '#d4ffaa',\n      '#aaffaa', '#aaffd4', '#aaffff', '#aad4ff',\n      '#aaaaff', '#d4aaff', '#ffaaff', '#ffaad4'\n    ],\n    modKey = (isMac() ? 'meta+' : 'ctrl+'), // ⌘\n    path = svgCanvas.pathActions,\n    {undoMgr} = svgCanvas,\n    workarea = $('#workarea'),\n    canvMenu = $('#cmenu_canvas'),\n    // layerMenu = $('#cmenu_layers'), // Unused\n    paintBox = {fill: null, stroke: null};\n\n  let resizeTimer, curScrollPos;\n  let exportWindow = null,\n    defaultImageURL = curConfig.imgPath + 'logo.png',\n    zoomInIcon = 'crosshair',\n    zoomOutIcon = 'crosshair',\n    uiContext = 'toolbars';\n\n  // For external openers\n  (function () {\n    // let the opener know SVG Edit is ready (now that config is set up)\n    const w = window.opener || window.parent;\n    if (w) {\n      try {\n        /**\n         * Triggered on a containing `document` (of `window.opener`\n         * or `window.parent`) when the editor is loaded.\n         * @event module:SVGEditor#event:svgEditorReadyEvent\n         * @type {Event}\n         * @property {true} bubbles\n         * @property {true} cancelable\n         */\n        /**\n         * @name module:SVGEditor.svgEditorReadyEvent\n         * @type {module:SVGEditor#event:svgEditorReadyEvent}\n         */\n        const svgEditorReadyEvent = new w.CustomEvent('svgEditorReady', {\n          bubbles: true,\n          cancelable: true\n        });\n        w.document.documentElement.dispatchEvent(svgEditorReadyEvent);\n      } catch (e) {}\n    }\n  }());\n\n  // This sets up alternative dialog boxes. They mostly work the same way as\n  // their UI counterparts, expect instead of returning the result, a callback\n  // needs to be included that returns the result as its first parameter.\n  // In the future we may want to add additional types of dialog boxes, since\n  // they should be easy to handle this way.\n  (function () {\n    $('#dialog_container').draggable({\n      cancel: '#dialog_content, #dialog_buttons *',\n      containment: 'window'\n    }).css('position', 'absolute');\n    const box = $('#dialog_box'),\n      btnHolder = $('#dialog_buttons'),\n      dialogContent = $('#dialog_content'),\n      dbox = function (type, msg, callback, defaultVal, opts, changeCb, checkbox) {\n        dialogContent.html('<p>' + msg.replace(/\\n/g, '</p><p>') + '</p>')\n          .toggleClass('prompt', (type === 'prompt'));\n        btnHolder.empty();\n\n        const ok = $('<input type=\"button\" value=\"' + uiStrings.common.ok + '\">').appendTo(btnHolder);\n\n        if (type !== 'alert') {\n          $('<input type=\"button\" value=\"' + uiStrings.common.cancel + '\">')\n            .appendTo(btnHolder)\n            .click(function () {\n              box.hide();\n              if (callback) {\n                callback(false); // eslint-disable-line standard/no-callback-literal\n              }\n            });\n        }\n\n        let ctrl, chkbx;\n        if (type === 'prompt') {\n          ctrl = $('<input type=\"text\">').prependTo(btnHolder);\n          ctrl.val(defaultVal || '');\n          ctrl.bind('keydown', 'return', function () { ok.click(); });\n        } else if (type === 'select') {\n          const div = $('<div style=\"text-align:center;\">');\n          ctrl = $('<select>').appendTo(div);\n          if (checkbox) {\n            const label = $('<label>').text(checkbox.label);\n            chkbx = $('<input type=\"checkbox\">').appendTo(label);\n            chkbx.val(checkbox.value);\n            if (checkbox.tooltip) {\n              label.attr('title', checkbox.tooltip);\n            }\n            chkbx.prop('checked', !!checkbox.checked);\n            div.append($('<div>').append(label));\n          }\n          $.each(opts || [], function (opt, val) {\n            if (typeof val === 'object') {\n              ctrl.append($('<option>').val(val.value).html(val.text));\n            } else {\n              ctrl.append($('<option>').html(val));\n            }\n          });\n          dialogContent.append(div);\n          if (defaultVal) {\n            ctrl.val(defaultVal);\n          }\n          if (changeCb) {\n            ctrl.bind('change', 'return', changeCb);\n          }\n          ctrl.bind('keydown', 'return', function () { ok.click(); });\n        } else if (type === 'process') {\n          ok.hide();\n        }\n\n        box.show();\n\n        ok.click(function () {\n          box.hide();\n          const resp = (type === 'prompt' || type === 'select') ? ctrl.val() : true;\n          if (callback) {\n            if (chkbx) {\n              callback(resp, chkbx.prop('checked'));\n            } else {\n              callback(resp);\n            }\n          }\n        }).focus();\n\n        if (type === 'prompt' || type === 'select') {\n          ctrl.focus();\n        }\n      };\n\n    $.alert = function (msg, cb) { dbox('alert', msg, cb); };\n    $.confirm = function (msg, cb) { dbox('confirm', msg, cb); };\n    $.process_cancel = function (msg, cb) { dbox('process', msg, cb); };\n    $.prompt = function (msg, txt, cb) { dbox('prompt', msg, cb, txt); };\n    $.select = function (msg, opts, cb, changeCb, txt, checkbox) {\n      dbox('select', msg, cb, txt, opts, changeCb, checkbox);\n    };\n  }());\n\n  const setSelectMode = function () {\n    const curr = $('.tool_button_current');\n    if (curr.length && curr[0].id !== 'tool_select') {\n      curr.removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n    svgCanvas.setMode('select');\n    workarea.css('cursor', 'auto');\n  };\n\n  // used to make the flyouts stay on the screen longer the very first time\n  // const flyoutspeed = 1250; // Currently unused\n  // let textBeingEntered = false; // Currently unused\n  const origTitle = $('title:first').text();\n  // Make [1,2,5] array\n  const rIntervals = [];\n  for (let i = 0.1; i < 1E5; i *= 10) {\n    rIntervals.push(i);\n    rIntervals.push(2 * i);\n    rIntervals.push(5 * i);\n  }\n\n  // This function highlights the layer passed in (by fading out the other layers)\n  // if no layer is passed in, this function restores the other layers\n  const toggleHighlightLayer = function (layerNameToHighlight) {\n    let i;\n    const curNames = [], numLayers = svgCanvas.getCurrentDrawing().getNumLayers();\n    for (i = 0; i < numLayers; i++) {\n      curNames[i] = svgCanvas.getCurrentDrawing().getLayerName(i);\n    }\n\n    if (layerNameToHighlight) {\n      for (i = 0; i < numLayers; ++i) {\n        if (curNames[i] !== layerNameToHighlight) {\n          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);\n        }\n      }\n    } else {\n      for (i = 0; i < numLayers; ++i) {\n        svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);\n      }\n    }\n  };\n\n  const populateLayers = function () {\n    svgCanvas.clearSelection();\n    const layerlist = $('#layerlist tbody').empty();\n    const selLayerNames = $('#selLayerNames').empty();\n    const drawing = svgCanvas.getCurrentDrawing();\n    const currentLayerName = drawing.getCurrentLayerName();\n    const icon = $.getSvgIcon('eye');\n    let layer = svgCanvas.getCurrentDrawing().getNumLayers();\n    // we get the layers in the reverse z-order (the layer rendered on top is listed first)\n    while (layer--) {\n      const name = drawing.getLayerName(layer);\n      const layerTr = $('<tr class=\"layer\">').toggleClass('layersel', name === currentLayerName);\n      const layerVis = $('<td class=\"layervis\">').toggleClass('layerinvis', !drawing.getLayerVisibility(name));\n      const layerName = $('<td class=\"layername\">' + name + '</td>');\n      layerlist.append(layerTr.append(layerVis, layerName));\n      selLayerNames.append('<option value=\"' + name + '\">' + name + '</option>');\n    }\n    if (icon !== undefined) {\n      const copy = icon.clone();\n      $('td.layervis', layerlist).append(copy);\n      $.resizeSvgIcons({'td.layervis .svg_icon': 14});\n    }\n    // handle selection of layer\n    $('#layerlist td.layername')\n      .mouseup(function (evt) {\n        $('#layerlist tr.layer').removeClass('layersel');\n        $(this.parentNode).addClass('layersel');\n        svgCanvas.setCurrentLayer(this.textContent);\n        evt.preventDefault();\n      })\n      .mouseover(function () {\n        toggleHighlightLayer(this.textContent);\n      })\n      .mouseout(function () {\n        toggleHighlightLayer();\n      });\n    $('#layerlist td.layervis').click(function () {\n      const row = $(this.parentNode).prevAll().length;\n      const name = $('#layerlist tr.layer:eq(' + row + ') td.layername').text();\n      const vis = $(this).hasClass('layerinvis');\n      svgCanvas.setLayerVisibility(name, vis);\n      $(this).toggleClass('layerinvis');\n    });\n\n    // if there were too few rows, let's add a few to make it not so lonely\n    let num = 5 - $('#layerlist tr.layer').size();\n    while (num-- > 0) {\n      // FIXME: there must a better way to do this\n      layerlist.append('<tr><td style=\"color:white\">_</td><td/></tr>');\n    }\n  };\n\n  let editingsource = false;\n  let origSource = '';\n  const showSourceEditor = function (e, forSaving) {\n    if (editingsource) { return; }\n\n    editingsource = true;\n    origSource = svgCanvas.getSvgString();\n    $('#save_output_btns').toggle(!!forSaving);\n    $('#tool_source_back').toggle(!forSaving);\n    $('#svg_source_textarea').val(origSource);\n    $('#svg_source_editor').fadeIn();\n    $('#svg_source_textarea').focus();\n  };\n\n  let selectedElement = null;\n  let multiselected = false;\n\n  const togglePathEditMode = function (editmode, elems) {\n    $('#path_node_panel').toggle(editmode);\n    $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);\n    if (editmode) {\n      // Change select icon\n      $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      setIcon('#tool_select', 'select_node');\n      multiselected = false;\n      if (elems.length) {\n        selectedElement = elems[0];\n      }\n    } else {\n      setTimeout(() => {\n        setIcon('#tool_select', 'select');\n      }, 1000);\n    }\n  };\n\n  /**\n   * @type {module:svgcanvas.EventHandler}\n   * @param {external:Window} wind\n   * @param {module:svgcanvas.SvgCanvas#event:saved} svg The SVG source\n   * @listens module:svgcanvas.SvgCanvas#event:saved\n   * @returns {undefined}\n   */\n  const saveHandler = function (wind, svg) {\n    editor.showSaveWarning = false;\n\n    // by default, we add the XML prolog back, systems integrating SVG-edit (wikis, CMSs)\n    // can just provide their own custom save handler and might not want the XML prolog\n    svg = '<?xml version=\"1.0\"?>\\n' + svg;\n\n    // IE9 doesn't allow standalone Data URLs\n    // https://connect.microsoft.com/IE/feedback/details/542600/data-uri-images-fail-when-loaded-by-themselves\n    if (isIE()) {\n      showSourceEditor(0, true);\n      return;\n    }\n\n    // Since saving SVGs by opening a new window was removed in Chrome use artificial link-click\n    // https://stackoverflow.com/questions/45603201/window-is-not-allowed-to-navigate-top-frame-navigations-to-data-urls\n    const a = document.createElement('a');\n    a.href = 'data:image/svg+xml;base64,' + Utils.encode64(svg);\n    a.download = 'icon.svg';\n    a.style = 'display: none;';\n    document.body.append(a); // Need to append for Firefox\n\n    a.click();\n\n    // Alert will only appear the first time saved OR the\n    //   first time the bug is encountered\n    let done = $.pref('save_notice_done');\n\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', 'SVG');\n      // Check if FF and has <defs/>\n      if (isGecko()) {\n        if (svg.includes('<defs')) {\n          // warning about Mozilla bug #308590 when applicable (seems to be fixed now in Feb 2013)\n          note += '\\n\\n' + uiStrings.notification.defsFailOnSave;\n          $.pref('save_notice_done', 'all');\n          done = 'all';\n        } else {\n          $.pref('save_notice_done', 'part');\n        }\n      } else {\n        $.pref('save_notice_done', 'all');\n      }\n      if (done !== 'part') {\n        alert(note);\n      }\n    }\n  };\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:exported} data\n   * @listens module:svgcanvas.SvgCanvas#event:exported\n   * @returns {undefined}\n   */\n  const exportHandler = function (win, data) {\n    const {issues, exportWindowName} = data;\n\n    exportWindow = window.open(Utils.blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n\n    if (!exportWindow || exportWindow.closed) {\n      $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n\n    exportWindow.location.href = data.bloburl || data.datauri;\n    const done = $.pref('export_notice_done');\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', data.type);\n\n      // Check if there are issues\n      if (issues.length) {\n        const pre = '\\n \\u2022 ';\n        note += ('\\n\\n' + uiStrings.notification.noteTheseIssues + pre + issues.join(pre));\n      }\n\n      // Note that this will also prevent the notice even though new issues may appear later.\n      // May want to find a way to deal with that without annoying the user\n      $.pref('export_notice_done', 'all');\n      exportWindow.alert(note);\n    }\n  };\n\n  const operaRepaint = function () {\n    // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change\n    if (!window.opera) {\n      return;\n    }\n    $('<p/>').hide().appendTo('body').remove();\n  };\n\n  function setStrokeOpt (opt, changeElem) {\n    const {id} = opt;\n    const bits = id.split('_');\n    const pre = bits[0];\n    const val = bits[1];\n\n    if (changeElem) {\n      svgCanvas.setStrokeAttr('stroke-' + pre, val);\n    }\n    operaRepaint();\n    setIcon('#cur_' + pre, id, 20);\n    $(opt).addClass('current').siblings().removeClass('current');\n  }\n\n  /**\n  * This is a common function used when a tool has been clicked (chosen).\n  * It does several common things:\n  * - Removes the `tool_button_current` class from whatever tool currently has it.\n  * - Hides any flyouts.\n  * - Adds the `tool_button_current` class to the button passed in.\n  * @function module:SVGEDitor.toolButtonClick\n  * @param {string|Element} button The DOM element or string selector representing the toolbar button\n  * @param {boolean} noHiding Whether not to hide any flyouts\n  * @returns {boolean} Whether the button was disabled or not\n  */\n  const toolButtonClick = editor.toolButtonClick = function (button, noHiding) {\n    if ($(button).hasClass('disabled')) { return false; }\n    if ($(button).parent().hasClass('tools_flyout')) { return true; }\n    const fadeFlyouts = 'normal';\n    if (!noHiding) {\n      $('.tools_flyout').fadeOut(fadeFlyouts);\n    }\n    $('#styleoverrides').text('');\n    workarea.css('cursor', 'auto');\n    $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n    $(button).addClass('tool_button_current').removeClass('tool_button');\n    return true;\n  };\n\n  /**\n  * Unless the select toolbar button is disabled, sets the button\n  * and sets the select mode and cursor styles.\n  * @function module:SVGEditor.clickSelect\n  * @returns {undefined}\n  */\n  const clickSelect = editor.clickSelect = function () {\n    if (toolButtonClick('#tool_select')) {\n      svgCanvas.setMode('select');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n  };\n\n  /**\n  * Set a selected image's URL.\n  * @function module:SVGEditor.setImageURL\n  * @param {string} url\n  * @returns {undefined}\n  */\n  const setImageURL = editor.setImageURL = function (url) {\n    if (!url) {\n      url = defaultImageURL;\n    }\n    svgCanvas.setImageURL(url);\n    $('#image_url').val(url);\n\n    if (url.startsWith('data:')) {\n      // data URI found\n      $('#image_url').hide();\n      $('#change_image_url').show();\n    } else {\n      // regular URL\n      svgCanvas.embedImage(url, function (dataURI) {\n        // Couldn't embed, so show warning\n        $('#url_notice').toggle(!dataURI);\n        defaultImageURL = url;\n      });\n      $('#image_url').show();\n      $('#change_image_url').hide();\n    }\n  };\n\n  function setBackground (color, url) {\n    // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }\n    $.pref('bkgd_color', color);\n    $.pref('bkgd_url', url);\n\n    // This should be done in svgcanvas.js for the borderRect fill\n    svgCanvas.setBackground(color, url);\n  }\n\n  function promptImgURL ({cancelDeletes = false} = {}) {\n    let curhref = svgCanvas.getHref(selectedElement);\n    curhref = curhref.startsWith('data:') ? '' : curhref;\n    $.prompt(uiStrings.notification.enterNewImgURL, curhref, function (url) {\n      if (url) {\n        setImageURL(url);\n      } else if (cancelDeletes) {\n        svgCanvas.deleteSelectedElements();\n      }\n    });\n  }\n\n  const setInputWidth = function (elem) {\n    const w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);\n    $(elem).width(w);\n  };\n\n  function updateRulers (scanvas, zoom) {\n    if (!zoom) { zoom = svgCanvas.getZoom(); }\n    if (!scanvas) { scanvas = $('#svgcanvas'); }\n\n    let d, i;\n    const limit = 30000;\n    const contentElem = svgCanvas.getContentElem();\n    const units = getTypeMap();\n    const unit = units[curConfig.baseUnit]; // 1 = 1px\n\n    // draw x ruler then y ruler\n    for (d = 0; d < 2; d++) {\n      const isX = (d === 0);\n      const dim = isX ? 'x' : 'y';\n      const lentype = isX ? 'width' : 'height';\n      const contentDim = Number(contentElem.getAttribute(dim));\n\n      const $hcanvOrig = $('#ruler_' + dim + ' canvas:first');\n\n      // Bit of a hack to fully clear the canvas in Safari & IE9\n      const $hcanv = $hcanvOrig.clone();\n      $hcanvOrig.replaceWith($hcanv);\n\n      const hcanv = $hcanv[0];\n\n      // Set the canvas size to the width of the container\n      let rulerLen = scanvas[lentype]();\n      const totalLen = rulerLen;\n      hcanv.parentNode.style[lentype] = totalLen + 'px';\n      let ctx = hcanv.getContext('2d');\n      let ctxArr, num, ctxArrNum;\n\n      ctx.fillStyle = 'rgb(200,0,0)';\n      ctx.fillRect(0, 0, hcanv.width, hcanv.height);\n\n      // Remove any existing canvasses\n      $hcanv.siblings().remove();\n\n      // Create multiple canvases when necessary (due to browser limits)\n      if (rulerLen >= limit) {\n        ctxArrNum = parseInt(rulerLen / limit, 10) + 1;\n        ctxArr = [];\n        ctxArr[0] = ctx;\n        let copy;\n        for (i = 1; i < ctxArrNum; i++) {\n          hcanv[lentype] = limit;\n          copy = hcanv.cloneNode(true);\n          hcanv.parentNode.append(copy);\n          ctxArr[i] = copy.getContext('2d');\n        }\n\n        copy[lentype] = rulerLen % limit;\n\n        // set copy width to last\n        rulerLen = limit;\n      }\n\n      hcanv[lentype] = rulerLen;\n\n      const uMulti = unit * zoom;\n\n      // Calculate the main number interval\n      const rawM = 50 / uMulti;\n      let multi = 1;\n      for (i = 0; i < rIntervals.length; i++) {\n        num = rIntervals[i];\n        multi = num;\n        if (rawM <= num) {\n          break;\n        }\n      }\n\n      const bigInt = multi * uMulti;\n\n      ctx.font = '9px sans-serif';\n\n      let rulerD = ((contentDim / uMulti) % multi) * uMulti;\n      let labelPos = rulerD - bigInt;\n      // draw big intervals\n      let ctxNum = 0;\n      while (rulerD < totalLen) {\n        labelPos += bigInt;\n        // const realD = rulerD - contentDim; // Currently unused\n\n        const curD = Math.round(rulerD) + 0.5;\n        if (isX) {\n          ctx.moveTo(curD, 15);\n          ctx.lineTo(curD, 0);\n        } else {\n          ctx.moveTo(15, curD);\n          ctx.lineTo(0, curD);\n        }\n\n        num = (labelPos - contentDim) / uMulti;\n        let label;\n        if (multi >= 1) {\n          label = Math.round(num);\n        } else {\n          const decs = String(multi).split('.')[1].length;\n          label = num.toFixed(decs);\n        }\n\n        // Change 1000s to Ks\n        if (label !== 0 && label !== 1000 && label % 1000 === 0) {\n          label = (label / 1000) + 'K';\n        }\n\n        if (isX) {\n          ctx.fillText(label, rulerD + 2, 8);\n        } else {\n          // draw label vertically\n          const str = String(label).split('');\n          for (i = 0; i < str.length; i++) {\n            ctx.fillText(str[i], 1, (rulerD + 9) + i * 9);\n          }\n        }\n\n        const part = bigInt / 10;\n        // draw the small intervals\n        for (i = 1; i < 10; i++) {\n          let subD = Math.round(rulerD + part * i) + 0.5;\n          if (ctxArr && subD > rulerLen) {\n            ctxNum++;\n            ctx.stroke();\n            if (ctxNum >= ctxArrNum) {\n              i = 10;\n              rulerD = totalLen;\n              continue;\n            }\n            ctx = ctxArr[ctxNum];\n            rulerD -= limit;\n            subD = Math.round(rulerD + part * i) + 0.5;\n          }\n\n          // odd lines are slighly longer\n          const lineNum = (i % 2) ? 12 : 10;\n          if (isX) {\n            ctx.moveTo(subD, 15);\n            ctx.lineTo(subD, lineNum);\n          } else {\n            ctx.moveTo(15, subD);\n            ctx.lineTo(lineNum, subD);\n          }\n        }\n        rulerD += bigInt;\n      }\n      ctx.strokeStyle = '#000';\n      ctx.stroke();\n    }\n  }\n\n  /**\n  * @function module:SVGEditor.updateCanvas\n  * @param {boolean} center\n  * @param {module:math.XYObject} newCtr\n  * @returns {undefined}\n  */\n  const updateCanvas = editor.updateCanvas = function (center, newCtr) {\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n    const cnvs = $('#svgcanvas');\n\n    let w = workarea.width(), h = workarea.height();\n    const wOrig = w, hOrig = h;\n    const oldCtr = {\n      x: wArea[0].scrollLeft + wOrig / 2,\n      y: wArea[0].scrollTop + hOrig / 2\n    };\n    const multi = curConfig.canvas_expansion;\n    w = Math.max(wOrig, svgCanvas.contentW * zoom * multi);\n    h = Math.max(hOrig, svgCanvas.contentH * zoom * multi);\n\n    if (w === wOrig && h === hOrig) {\n      workarea.css('overflow', 'hidden');\n    } else {\n      workarea.css('overflow', 'scroll');\n    }\n\n    const oldCanY = cnvs.height() / 2;\n    const oldCanX = cnvs.width() / 2;\n    cnvs.width(w).height(h);\n    const newCanY = h / 2;\n    const newCanX = w / 2;\n    const offset = svgCanvas.updateCanvas(w, h);\n\n    const ratio = newCanX / oldCanX;\n\n    const scrollX = w / 2 - wOrig / 2;\n    const scrollY = h / 2 - hOrig / 2;\n\n    if (!newCtr) {\n      const oldDistX = oldCtr.x - oldCanX;\n      const newX = newCanX + oldDistX * ratio;\n\n      const oldDistY = oldCtr.y - oldCanY;\n      const newY = newCanY + oldDistY * ratio;\n\n      newCtr = {\n        x: newX,\n        y: newY\n      };\n    } else {\n      newCtr.x += offset.x;\n      newCtr.y += offset.y;\n    }\n\n    if (center) {\n      // Go to top-left for larger documents\n      if (svgCanvas.contentW > wArea.width()) {\n        // Top-left\n        workarea[0].scrollLeft = offset.x - 10;\n        workarea[0].scrollTop = offset.y - 10;\n      } else {\n        // Center\n        wArea[0].scrollLeft = scrollX;\n        wArea[0].scrollTop = scrollY;\n      }\n    } else {\n      wArea[0].scrollLeft = newCtr.x - wOrig / 2;\n      wArea[0].scrollTop = newCtr.y - hOrig / 2;\n    }\n    if (curConfig.showRulers) {\n      updateRulers(cnvs, zoom);\n      workarea.scroll();\n    }\n\n    if (urldata.storagePrompt !== true && editor.storagePromptState === 'ignore') {\n      $('#dialog_box').hide();\n    }\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n   * @returns {undefined}\n   */\n  const updateToolButtonState = function () {\n    let index, button;\n    const bNoFill = (svgCanvas.getColor('fill') === 'none');\n    const bNoStroke = (svgCanvas.getColor('stroke') === 'none');\n    const buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];\n    const buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];\n    if (bNoStroke) {\n      for (index in buttonsNeedingStroke) {\n        button = buttonsNeedingStroke[index];\n        if ($(button).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(button).addClass('disabled');\n      }\n    } else {\n      for (index in buttonsNeedingStroke) {\n        button = buttonsNeedingStroke[index];\n        $(button).removeClass('disabled');\n      }\n    }\n\n    if (bNoStroke && bNoFill) {\n      for (index in buttonsNeedingFillAndStroke) {\n        button = buttonsNeedingFillAndStroke[index];\n        if ($(button).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(button).addClass('disabled');\n      }\n    } else {\n      for (index in buttonsNeedingFillAndStroke) {\n        button = buttonsNeedingFillAndStroke[index];\n        $(button).removeClass('disabled');\n      }\n    }\n\n    svgCanvas.runExtensions('toolButtonStateUpdate', /** @type {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} */ {\n      nofill: bNoFill,\n      nostroke: bNoStroke\n    });\n\n    // Disable flyouts if all inside are disabled\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      let hasEnabled = false;\n      $(this).children().each(function () {\n        if (!$(this).hasClass('disabled')) {\n          hasEnabled = true;\n        }\n      });\n      shower.toggleClass('disabled', !hasEnabled);\n    });\n\n    operaRepaint();\n  };\n\n  // Updates the toolbar (colors, opacity, etc) based on the selected element\n  // This function also updates the opacity and id elements that are in the context panel\n  const updateToolbar = function () {\n    let i, len;\n    if (selectedElement != null) {\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        break;\n      case 'g':\n      case 'a':\n        // Look for common styles\n        const childs = selectedElement.getElementsByTagName('*');\n        let gWidth = null;\n        for (i = 0, len = childs.length; i < len; i++) {\n          const swidth = childs[i].getAttribute('stroke-width');\n\n          if (i === 0) {\n            gWidth = swidth;\n          } else if (gWidth !== swidth) {\n            gWidth = null;\n          }\n        }\n\n        $('#stroke_width').val(gWidth === null ? '' : gWidth);\n\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        break;\n      default:\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        $('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);\n        $('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');\n\n        let attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';\n\n        if ($('#linejoin_' + attr).length) {\n          setStrokeOpt($('#linejoin_' + attr)[0]);\n        }\n\n        attr = selectedElement.getAttribute('stroke-linecap') || 'butt';\n\n        if ($('#linecap_' + attr).length) {\n          setStrokeOpt($('#linecap_' + attr)[0]);\n        }\n      }\n    }\n\n    // All elements including image and group have opacity\n    if (selectedElement != null) {\n      const opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;\n      $('#group_opacity').val(opacPerc);\n      $('#opac_slider').slider('option', 'value', opacPerc);\n      $('#elem_id').val(selectedElement.id);\n      $('#elem_class').val(selectedElement.getAttribute('class'));\n    }\n\n    updateToolButtonState();\n  };\n\n  // updates the context panel tools based on the selected element\n  const updateContextPanel = function () {\n    let elem = selectedElement;\n    // If element has just been deleted, consider it null\n    if (elem != null && !elem.parentNode) { elem = null; }\n    const currentLayerName = svgCanvas.getCurrentDrawing().getCurrentLayerName();\n    const currentMode = svgCanvas.getMode();\n    const unit = curConfig.baseUnit !== 'px' ? curConfig.baseUnit : null;\n\n    const isNode = currentMode === 'pathedit'; // elem ? (elem.id && elem.id.startsWith('pathpointgrip')) : false;\n    const menuItems = $('#cmenu_canvas li');\n    $('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' +\n      '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' +\n      ' #use_panel, #a_panel').hide();\n    if (elem != null) {\n      const elname = elem.nodeName;\n      // If this is a link with no transform and one child, pretend\n      // its child is selected\n      // if (elname === 'a') { // && !$(elem).attr('transform')) {\n      //   elem = elem.firstChild;\n      // }\n\n      const angle = svgCanvas.getRotationAngle(elem);\n      $('#angle').val(angle);\n\n      const blurval = svgCanvas.getBlur(elem);\n      $('#blur').val(blurval);\n      $('#blur_slider').slider('option', 'value', blurval);\n\n      if (svgCanvas.addedNew) {\n        if (elname === 'image' && svgCanvas.getMode() === 'image') {\n          // Prompt for URL if not a data URL\n          if (!svgCanvas.getHref(elem).startsWith('data:')) {\n            promptImgURL({cancelDeletes: true});\n          }\n        }\n        /* else if (elname == 'text') {\n          // TODO: Do something here for new text\n        } */\n      }\n\n      if (!isNode && currentMode !== 'pathedit') {\n        $('#selected_panel').show();\n        // Elements in this array already have coord fields\n        if (['line', 'circle', 'ellipse'].includes(elname)) {\n          $('#xy_panel').hide();\n        } else {\n          let x, y;\n\n          // Get BBox vals for g, polyline and path\n          if (['g', 'polyline', 'path'].includes(elname)) {\n            const bb = svgCanvas.getStrokedBBox([elem]);\n            if (bb) {\n              ({x, y} = bb);\n            }\n          } else {\n            x = elem.getAttribute('x');\n            y = elem.getAttribute('y');\n          }\n\n          if (unit) {\n            x = convertUnit(x);\n            y = convertUnit(y);\n          }\n\n          $('#selected_x').val(x || 0);\n          $('#selected_y').val(y || 0);\n          $('#xy_panel').show();\n        }\n\n        // Elements in this array cannot be converted to a path\n        const noPath = !['image', 'text', 'path', 'g', 'use'].includes(elname);\n        $('#tool_topath').toggle(noPath);\n        $('#tool_reorient').toggle(elname === 'path');\n        $('#tool_reorient').toggleClass('disabled', angle === 0);\n      } else {\n        const point = path.getNodePoint();\n        $('#tool_add_subpath').removeClass('push_button_pressed').addClass('tool_button');\n        $('#tool_node_delete').toggleClass('disabled', !path.canDeleteNodes);\n\n        // Show open/close button based on selected point\n        setIcon('#tool_openclose_path', path.closed_subpath ? 'open_path' : 'close_path');\n\n        if (point) {\n          const segType = $('#seg_type');\n          if (unit) {\n            point.x = convertUnit(point.x);\n            point.y = convertUnit(point.y);\n          }\n          $('#path_node_x').val(point.x);\n          $('#path_node_y').val(point.y);\n          if (point.type) {\n            segType.val(point.type).removeAttr('disabled');\n          } else {\n            segType.val(4).attr('disabled', 'disabled');\n          }\n        }\n        return;\n      }\n\n      // update contextual tools here\n      const panels = {\n        g: [],\n        a: [],\n        rect: ['rx', 'width', 'height'],\n        image: ['width', 'height'],\n        circle: ['cx', 'cy', 'r'],\n        ellipse: ['cx', 'cy', 'rx', 'ry'],\n        line: ['x1', 'y1', 'x2', 'y2'],\n        text: [],\n        use: []\n      };\n\n      const {tagName} = elem;\n\n      // if ($(elem).data('gsvg')) {\n      //   $('#g_panel').show();\n      // }\n\n      let linkHref = null;\n      if (tagName === 'a') {\n        linkHref = svgCanvas.getHref(elem);\n        $('#g_panel').show();\n      }\n\n      if (elem.parentNode.tagName === 'a') {\n        if (!$(elem).siblings().length) {\n          $('#a_panel').show();\n          linkHref = svgCanvas.getHref(elem.parentNode);\n        }\n      }\n\n      // Hide/show the make_link buttons\n      $('#tool_make_link, #tool_make_link').toggle(!linkHref);\n\n      if (linkHref) {\n        $('#link_url').val(linkHref);\n      }\n\n      if (panels[tagName]) {\n        const curPanel = panels[tagName];\n\n        $('#' + tagName + '_panel').show();\n\n        $.each(curPanel, function (i, item) {\n          let attrVal = elem.getAttribute(item);\n          if (curConfig.baseUnit !== 'px' && elem[item]) {\n            const bv = elem[item].baseVal.value;\n            attrVal = convertUnit(bv);\n          }\n          $('#' + tagName + '_' + item).val(attrVal || 0);\n        });\n\n        if (tagName === 'text') {\n          $('#text_panel').css('display', 'inline');\n          $('#tool_font_size').css('display', 'inline');\n          if (svgCanvas.getItalic()) {\n            $('#tool_italic').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_italic').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          if (svgCanvas.getBold()) {\n            $('#tool_bold').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_bold').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          $('#font_family').val(elem.getAttribute('font-family'));\n          $('#font_size').val(elem.getAttribute('font-size'));\n          $('#text').val(elem.textContent);\n          if (svgCanvas.addedNew) {\n            // Timeout needed for IE9\n            setTimeout(function () {\n              $('#text').focus().select();\n            }, 100);\n          }\n        // text\n        } else if (tagName === 'image' && svgCanvas.getMode() === 'image') {\n          setImageURL(svgCanvas.getHref(elem));\n        // image\n        } else if (tagName === 'g' || tagName === 'use') {\n          $('#container_panel').show();\n          const title = svgCanvas.getTitle();\n          const label = $('#g_title')[0];\n          label.value = title;\n          setInputWidth(label);\n          $('#g_title').prop('disabled', tagName === 'use');\n        }\n      }\n      menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');\n      menuItems[((tagName === 'g' || !multiselected) ? 'dis' : 'en') + 'ableContextMenuItems']('#group');\n    // if (elem != null)\n    } else if (multiselected) {\n      $('#multiselected_panel').show();\n      menuItems\n        .enableContextMenuItems('#group')\n        .disableContextMenuItems('#ungroup');\n    } else {\n      menuItems.disableContextMenuItems('#delete,#cut,#copy,#group,#ungroup,#move_front,#move_up,#move_down,#move_back');\n    }\n\n    // update history buttons\n    $('#tool_undo').toggleClass('disabled', undoMgr.getUndoStackSize() === 0);\n    $('#tool_redo').toggleClass('disabled', undoMgr.getRedoStackSize() === 0);\n\n    svgCanvas.addedNew = false;\n\n    if ((elem && !isNode) || multiselected) {\n      // update the selected elements' layer\n      $('#selLayerNames').removeAttr('disabled').val(currentLayerName);\n\n      // Enable regular menu options\n      canvMenu.enableContextMenuItems(\n        '#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back'\n      );\n    } else {\n      $('#selLayerNames').attr('disabled', 'disabled');\n    }\n  };\n\n  const updateWireFrame = function () {\n    // Test support\n    if (supportsNonSS) { return; }\n\n    const rule = `\n      #workarea.wireframe #svgcontent * {\n        stroke-width: ${1 / svgCanvas.getZoom()}px;\n      }\n    `;\n    $('#wireframe_rules').text(workarea.hasClass('wireframe') ? rule : '');\n  };\n\n  let curContext = '';\n\n  const updateTitle = function (title) {\n    title = title || svgCanvas.getDocumentTitle();\n    const newTitle = origTitle + (title ? ': ' + title : '');\n\n    // Remove title update with current context info, isn't really necessary\n    // if (curContext) {\n    //   new_title = new_title + curContext;\n    // }\n    $('title:first').text(newTitle);\n  };\n\n  // called when we've selected a different element\n  /**\n  *\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:selected} elems Array of elements that were selected\n  * @listens module:svgcanvas.SvgCanvas#event:selected\n  * @fires module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n  * @returns {undefined}\n  */\n  const selectedChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n    const isNode = mode === 'pathedit';\n    // if elems[1] is present, then we have more than one element\n    selectedElement = (elems.length === 1 || elems[1] == null ? elems[0] : null);\n    multiselected = (elems.length >= 2 && elems[1] != null);\n    if (selectedElement != null) {\n      // unless we're already in always set the mode of the editor to select because\n      // upon creation of a text element the editor is switched into\n      // select mode and this event fires - we need our UI to be in sync\n\n      if (!isNode) {\n        updateToolbar();\n      }\n    } // if (elem != null)\n\n    // Deal with pathedit mode\n    togglePathEditMode(isNode, elems);\n    updateContextPanel();\n    svgCanvas.runExtensions('selectedChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} */ {\n      elems,\n      selectedElement,\n      multiselected\n    });\n  };\n\n  // Call when part of element is in process of changing, generally\n  // on mousemove actions like rotate, move, etc.\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:transition} elems\n   * @listens module:svgcanvas.SvgCanvas#event:transition\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementTransition\n   * @returns {undefined}\n   */\n  const elementTransition = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    const elem = elems[0];\n\n    if (!elem) {\n      return;\n    }\n\n    multiselected = (elems.length >= 2 && elems[1] != null);\n    // Only updating fields for single elements for now\n    if (!multiselected) {\n      switch (mode) {\n      case 'rotate':\n        const ang = svgCanvas.getRotationAngle(elem);\n        $('#angle').val(ang);\n        $('#tool_reorient').toggleClass('disabled', ang === 0);\n        break;\n\n      // TODO: Update values that change on move/resize, etc\n      // case 'select':\n      // case 'resize':\n      //   break;\n      }\n    }\n    svgCanvas.runExtensions('elementTransition', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementTransition} */ {\n      elems\n    });\n  };\n\n  /**\n   * Test whether an element is a layer or not.\n   * @param {SVGGElement} elem - The SVGGElement to test.\n   * @returns {boolean} True if the element is a layer\n   */\n  function isLayer (elem) {\n    return elem && elem.tagName === 'g' && Layer.CLASS_REGEX.test(elem.getAttribute('class'));\n  }\n\n  // called when any element has changed\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:changed} elems\n   * @listens module:svgcanvas.SvgCanvas#event:changed\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementChanged\n   * @returns {undefined}\n   */\n  const elementChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n\n    for (let i = 0; i < elems.length; ++i) {\n      const elem = elems[i];\n\n      const isSvgElem = (elem && elem.tagName === 'svg');\n      if (isSvgElem || isLayer(elem)) {\n        populateLayers();\n        // if the element changed was the svg, then it could be a resolution change\n        if (isSvgElem) {\n          updateCanvas();\n        }\n      // Update selectedElement if element is no longer part of the image.\n      // This occurs for the text elements in Firefox\n      } else if (elem && selectedElement && selectedElement.parentNode == null) {\n        // || elem && elem.tagName == \"path\" && !multiselected) { // This was added in r1430, but not sure why\n        selectedElement = elem;\n      }\n    }\n\n    editor.showSaveWarning = true;\n\n    // we update the contextual panel with potentially new\n    // positional/sizing information (we DON'T want to update the\n    // toolbar here as that creates an infinite loop)\n    // also this updates the history buttons\n\n    // we tell it to skip focusing the text control if the\n    // text element was previously in focus\n    updateContextPanel();\n\n    // In the event a gradient was flipped:\n    if (selectedElement && mode === 'select') {\n      paintBox.fill.update();\n      paintBox.stroke.update();\n    }\n\n    svgCanvas.runExtensions('elementChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementChanged} */ {\n      elems\n    });\n  };\n\n  /**\n   * @returns {undefined}\n   */\n  const zoomDone = function () {\n    updateWireFrame();\n    // updateCanvas(); // necessary?\n  };\n\n  /**\n  * @typedef {PlainObject} module:SVGEditor.BBoxObjectWithFactor (like `DOMRect`)\n  * @property {Float} x\n  * @property {Float} y\n  * @property {Float} width\n  * @property {Float} height\n  * @property {Float} [factor] Needed if width or height are 0\n  * @property {Float} [zoom]\n  * @see module:svgcanvas.SvgCanvas#event:zoomed\n  */\n\n  /**\n  * @function module:svgcanvas.SvgCanvas#zoomChanged\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:zoomed} bbox\n  * @param {boolean} autoCenter\n  * @listens module:svgcanvas.SvgCanvas#event:zoomed\n  * @returns {undefined}\n  */\n  const zoomChanged = svgCanvas.zoomChanged = function (win, bbox, autoCenter) {\n    const scrbar = 15,\n      // res = svgCanvas.getResolution(), // Currently unused\n      wArea = workarea;\n    // const canvasPos = $('#svgcanvas').position(); // Currently unused\n    const zInfo = svgCanvas.setBBoxZoom(bbox, wArea.width() - scrbar, wArea.height() - scrbar);\n    if (!zInfo) { return; }\n    const zoomlevel = zInfo.zoom,\n      bb = zInfo.bbox;\n\n    if (zoomlevel < 0.001) {\n      changeZoom({value: 0.1});\n      return;\n    }\n\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    if (autoCenter) {\n      updateCanvas();\n    } else {\n      updateCanvas(false, {x: bb.x * zoomlevel + (bb.width * zoomlevel) / 2, y: bb.y * zoomlevel + (bb.height * zoomlevel) / 2});\n    }\n\n    if (svgCanvas.getMode() === 'zoom' && bb.width) {\n      // Go to select if a zoom box was drawn\n      setSelectMode();\n    }\n\n    zoomDone();\n  };\n\n  const changeZoom = function (ctl) {\n    const zoomlevel = ctl.value / 100;\n    if (zoomlevel < 0.001) {\n      ctl.value = 0.1;\n      return;\n    }\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n\n    zoomChanged(window, {\n      width: 0,\n      height: 0,\n      // center pt of scroll position\n      x: (wArea[0].scrollLeft + wArea.width() / 2) / zoom,\n      y: (wArea[0].scrollTop + wArea.height() / 2) / zoom,\n      zoom: zoomlevel\n    }, true);\n  };\n\n  $('#cur_context_panel').delegate('a', 'click', function () {\n    const link = $(this);\n    if (link.attr('data-root')) {\n      svgCanvas.leaveContext();\n    } else {\n      svgCanvas.setContext(link.text());\n    }\n    svgCanvas.clearSelection();\n    return false;\n  });\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:contextset} context\n   * @listens module:svgcanvas.SvgCanvas#event:contextset\n   * @returns {undefined}\n   */\n  const contextChanged = function (win, context) {\n    let linkStr = '';\n    if (context) {\n      let str = '';\n      linkStr = '<a href=\"#\" data-root=\"y\">' + svgCanvas.getCurrentDrawing().getCurrentLayerName() + '</a>';\n\n      $(context).parentsUntil('#svgcontent > g').andSelf().each(function () {\n        if (this.id) {\n          str += ' > ' + this.id;\n          if (this !== context) {\n            linkStr += ' > <a href=\"#\">' + this.id + '</a>';\n          } else {\n            linkStr += ' > ' + this.id;\n          }\n        }\n      });\n\n      curContext = str;\n    } else {\n      curContext = null;\n    }\n    $('#cur_context_panel').toggle(!!context).html(linkStr);\n\n    updateTitle();\n  };\n\n  // Makes sure the current selected paint is available to work with\n  const prepPaints = function () {\n    paintBox.fill.prep();\n    paintBox.stroke.prep();\n  };\n\n  const flyoutFuncs = {};\n\n  const setFlyoutTitles = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      if (shower.data('isLibrary')) {\n        return;\n      }\n\n      const tooltips = $(this).children().map(function () {\n        return this.title;\n      }).get();\n      shower[0].title = tooltips.join(' / ');\n    });\n  };\n\n  const allHolders = {};\n  /**\n   * @param {GenericObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector\n   * @returns {undefined}\n   */\n  const setupFlyouts = function (holders) {\n    $.each(holders, function (holdSel, btnOpts) {\n      if (!allHolders[holdSel]) {\n        allHolders[holdSel] = [];\n      }\n      allHolders[holdSel].push(...btnOpts);\n\n      const buttons = $(holdSel).children().not('.tool_button_evt_handled');\n      const showSel = holdSel + '_show';\n      const shower = $(showSel);\n      let def = false;\n      buttons.addClass('tool_button tool_button_evt_handled')\n        .unbind('click mousedown mouseup') // may not be necessary\n        .each(function () {\n          // Get this button's options\n          const idSel = '#' + this.getAttribute('id');\n          const [i, opts] = Object.entries(btnOpts).find(([i, {sel}]) => {\n            return sel === idSel;\n          });\n\n          // Remember the function that goes with this ID\n          flyoutFuncs[opts.sel] = opts.fn;\n\n          if (opts.isDefault) { def = i; }\n\n          /**\n           * Clicking the icon in flyout should set this set's icon.\n           * @param {Event} ev\n           * @returns {undefined}\n           */\n          const flyoutAction = function (ev) {\n            let options = opts;\n            // Find the currently selected tool if comes from keystroke\n            if (ev.type === 'keydown') {\n              const flyoutIsSelected = $(options.parent + '_show').hasClass('tool_button_current');\n              const currentOperation = $(options.parent + '_show').attr('data-curopt');\n              Object.entries(holders[opts.parent]).some(([i, tool]) => {\n                if (tool.sel !== currentOperation) {\n                  return;\n                }\n                if (!ev.shiftKey || !flyoutIsSelected) {\n                  options = tool;\n                } else {\n                  // If flyout is selected, allow shift key to iterate through subitems\n                  i = parseInt(i, 10);\n                  // Use `allHolders` to include both extension `includeWith` and toolbarButtons\n                  options = allHolders[opts.parent][i + 1] ||\n                    holders[opts.parent][0];\n                }\n                return true;\n              });\n            }\n            if ($(this).hasClass('disabled')) { return false; }\n            if (toolButtonClick(showSel)) {\n              options.fn();\n            }\n            let icon;\n            if (options.icon) {\n              icon = $.getSvgIcon(options.icon, true);\n            } else {\n              icon = $(options.sel).children().eq(0).clone();\n            }\n\n            icon[0].setAttribute('width', shower.width());\n            icon[0].setAttribute('height', shower.height());\n            shower.children(':not(.flyout_arrow_horiz)').remove();\n            shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode\n          };\n\n          $(this).mouseup(flyoutAction);\n\n          if (opts.key) {\n            $(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);\n          }\n        });\n\n      if (def) {\n        shower.attr('data-curopt', btnOpts[def].sel);\n      } else if (!shower.attr('data-curopt')) {\n        // Set first as default\n        shower.attr('data-curopt', btnOpts[0].sel);\n      }\n\n      let timer;\n      const pos = $(showSel).position();\n\n      // Clicking the \"show\" icon should set the current mode\n      shower.mousedown(function (evt) {\n        if (shower.hasClass('disabled')) {\n          return false;\n        }\n        const holder = $(holdSel);\n        const l = pos.left + 34;\n        const w = holder.width() * -1;\n        const time = holder.data('shown_popop') ? 200 : 0;\n        timer = setTimeout(function () {\n          // Show corresponding menu\n          if (!shower.data('isLibrary')) {\n            holder.css('left', w).show().animate({\n              left: l\n            }, 150);\n          } else {\n            holder.css('left', l).show();\n          }\n          holder.data('shown_popop', true);\n        }, time);\n        evt.preventDefault();\n      }).mouseup(function (evt) {\n        clearTimeout(timer);\n        const opt = $(this).attr('data-curopt');\n        // Is library and popped up, so do nothing\n        if (shower.data('isLibrary') && $(showSel.replace('_show', '')).is(':visible')) {\n          toolButtonClick(showSel, true);\n          return;\n        }\n        if (toolButtonClick(showSel) && flyoutFuncs[opt]) {\n          flyoutFuncs[opt]();\n        }\n      });\n      // $('#tools_rect').mouseleave(function () { $('#tools_rect').fadeOut(); });\n    });\n    setFlyoutTitles();\n    setFlyoutPositions();\n  };\n\n  const makeFlyoutHolder = function (id, child) {\n    const div = $('<div>', {\n      class: 'tools_flyout',\n      id\n    }).appendTo('#svg_editor').append(child);\n\n    return div;\n  };\n\n  // TODO: Combine this with addDropDown or find other way to optimize\n  const addAltDropDown = function (elem, list, callback, opts) {\n    const button = $(elem);\n    const {dropUp} = opts;\n    list = $(list);\n    if (dropUp) {\n      $(elem).addClass('dropup');\n    }\n    list.find('li').bind('mouseup', function () {\n      if (opts.seticon) {\n        setIcon('#cur_' + button[0].id, $(this).children());\n        $(this).addClass('current').siblings().removeClass('current');\n      }\n      callback.apply(this, arguments);\n    });\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      onButton = false;\n    });\n\n    // const height = list.height(); // Currently unused\n    button.bind('mousedown', function () {\n      const off = button.offset();\n      if (dropUp) {\n        off.top -= list.height();\n        off.left += 8;\n      } else {\n        off.top += button.height();\n      }\n      list.offset(off);\n\n      if (!button.hasClass('down')) {\n        list.show();\n        onButton = true;\n      } else {\n        // CSS position must be reset for Webkit\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    if (opts.multiclick) {\n      list.mousedown(function () {\n        onButton = true;\n      });\n    }\n  };\n\n  const extsPreLang = [];\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext\n   * @listens module:svgcanvas.SvgCanvas#event:extension_added\n   * @returns {Promise} Resolves to `undefined`\n   */\n  const extAdded = async function (win, ext) {\n    if (!ext) {\n      return;\n    }\n    let cbCalled = false;\n    let resizeDone = false;\n\n    if (ext.langReady) {\n      if (editor.langChanged) { // We check for this since the \"lang\" pref could have been set by storage\n        const lang = $.pref('lang');\n        await ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n        loadedExtensionNames.push(ext.name);\n      } else {\n        extsPreLang.push(ext);\n      }\n    }\n\n    function prepResize () {\n      if (resizeTimer) {\n        clearTimeout(resizeTimer);\n        resizeTimer = null;\n      }\n      if (!resizeDone) {\n        resizeTimer = setTimeout(function () {\n          resizeDone = true;\n          setIconSize($.pref('iconsize'));\n        }, 50);\n      }\n    }\n\n    const runCallback = function () {\n      if (ext.callback && !cbCalled) {\n        cbCalled = true;\n        ext.callback.call(editor);\n      }\n    };\n\n    const btnSelects = [];\n\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ContextTool\n    * @property {string} panel The ID of the existing panel to which the tool is being added. Required.\n    * @property {string} id The ID of the actual tool element. Required.\n    * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"change\", external:jQuery.Function>} events DOM event names keyed to associated functions. Example: `{change () { alert('Option was changed') } }`. \"change\" event is one specifically handled for the \"button-select\" type. Required.\n    * @property {string} title The tooltip text that will appear when the user hovers over the tool. Required.\n    * @property {\"tool_button\"|\"select\"|\"button-select\"|\"input\"|string} type The type of tool being added. Expected.\n    * @property {PlainObject.<string, string>} [options] List of options and their labels for select tools. Example: `{1: 'One', 2: 'Two', all: 'All' }`. Required by \"select\" tools.\n    * @property {string} [container_id] The ID to be given to the tool's container element.\n    * @property {string} [defval] Default value\n    * @property {string|Integer} [colnum] Added as part of the option list class.\n    * @property {string} [label] Label associated with the tool, visible in the UI\n    * @property {Integer} [size] Value of the \"size\" attribute of the tool input\n    * @property {module:jQuerySpinButton.SpinButtonConfig} [spindata] When added to a tool of type \"input\", this tool becomes a \"spinner\" which allows the number to be in/decreased.\n    */\n    if (ext.context_tools) {\n      $.each(ext.context_tools, function (i, tool) {\n        // Add select tool\n        const contId = tool.container_id ? (' id=\"' + tool.container_id + '\"') : '';\n\n        let panel = $('#' + tool.panel);\n        // create the panel if it doesn't exist\n        if (!panel.length) {\n          panel = $('<div>', {id: tool.panel}).appendTo('#tools_top');\n        }\n\n        let html;\n        // TODO: Allow support for other types, or adding to existing tool\n        switch (tool.type) {\n        case 'tool_button':\n          html = '<div class=\"tool_button\">' + tool.id + '</div>';\n          const div = $(html).appendTo(panel);\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              $(div).bind(evt, func);\n            });\n          }\n          break;\n        case 'select':\n          html = '<label' + contId + '>' +\n            '<select id=\"' + tool.id + '\">';\n          $.each(tool.options, function (val, text) {\n            const sel = (val === tool.defval) ? ' selected' : '';\n            html += '<option value=\"' + val + '\"' + sel + '>' + text + '</option>';\n          });\n          html += '</select></label>';\n          // Creates the tool, hides & adds it, returns the select element\n          const sel = $(html).appendTo(panel).find('select');\n\n          $.each(tool.events, function (evt, func) {\n            $(sel).bind(evt, func);\n          });\n          break;\n        case 'button-select':\n          html = '<div id=\"' + tool.id + '\" class=\"dropdown toolset\" title=\"' + tool.title + '\">' +\n            '<div id=\"cur_' + tool.id + '\" class=\"icon_label\"></div><button></button></div>';\n\n          const list = $('<ul id=\"' + tool.id + '_opts\"></ul>').appendTo('#option_lists');\n\n          if (tool.colnum) {\n            list.addClass('optcols' + tool.colnum);\n          }\n\n          // Creates the tool, hides & adds it, returns the select element\n          /* const dropdown = */ $(html).appendTo(panel).children();\n\n          btnSelects.push({\n            elem: ('#' + tool.id),\n            list: ('#' + tool.id + '_opts'),\n            title: tool.title,\n            callback: tool.events.change,\n            cur: ('#cur_' + tool.id)\n          });\n\n          break;\n        case 'input':\n          html = '<label' + contId + '>' +\n            '<span id=\"' + tool.id + '_label\">' +\n            tool.label + ':</span>' +\n            '<input id=\"' + tool.id + '\" title=\"' + tool.title +\n            '\" size=\"' + (tool.size || '4') +\n            '\" value=\"' + (tool.defval || '') + '\" type=\"text\"/></label>';\n\n          // Creates the tool, hides & adds it, returns the select element\n\n          // Add to given tool.panel\n          const inp = $(html).appendTo(panel).find('input');\n\n          if (tool.spindata) {\n            inp.SpinButton(tool.spindata);\n          }\n\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              inp.bind(evt, func);\n            });\n          }\n          break;\n\n        default:\n          break;\n        }\n      });\n    }\n\n    const {svgicons} = ext;\n    if (ext.buttons) {\n      const fallbackObj = {},\n        placementObj = {},\n        holders = {};\n\n      /**\n      * @typedef {GenericArray} module:SVGEditor.KeyArray\n      * @property {string} 0 The key to bind (on `keydown`)\n      * @property {boolean} 1 Whether to `preventDefault` on the `keydown` event\n      * @property {boolean} 2 Not apparently in use (NoDisableInInput)\n      */\n      /**\n       * @typedef {string|module:SVGEditor.KeyArray} module:SVGEditor.Key\n       */\n      /**\n      * @typedef {PlainObject} module:SVGEditor.Button\n      * @property {string} id A unique identifier for this button. If SVG icons are used, this must match the ID used in the icon file. Required.\n      * @property {\"mode_flyout\"|\"mode\"|\"context\"|\"app_menu\"} type Type of button. Required.\n      * @property {string} title The tooltip text that will appear when the user hovers over the icon. Required.\n      * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"click\", external:jQuery.Function>} events DOM event names with associated functions. Example: `{click () { alert('Button was clicked') } }`. Click is used with `includeWith` and `type` of \"mode_flyout\" (and \"mode\"); any events may be added if `list` is not present. Expected.\n      * @property {string} panel The ID of the context panel to be included, if type is \"context\". Required only if type is \"context\".\n      * @property {string} icon The file path to the raster version of the icon image source. Required only if no `svgicons` is supplied from [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse}.\n      * @property {string} [svgicon] If absent, will utilize the button \"id\"; used to set \"placement\" on the `svgIcons` call\n      * @property {string} [list] Points to the \"id\" of a `context_tools` item of type \"button-select\" into which the button will be added as a panel list item\n      * @property {Integer} [position] The numeric index for placement; defaults to last position (as of the time of extension addition) if not present. For use with {@link http://api.jquery.com/eq/}.\n      * @property {boolean} [isDefault] Whether or not the button is the default. Used with `list`.\n      * @property {PlainObject} [includeWith] Object with flyout menu data\n      * @property {boolean} [includeWith.isDefault] Indicates whether button is default in flyout list or not.\n      * @property {string} includeWith.button jQuery selector of the existing button to be joined. Example: '#tool_line'. Required if `includeWith` is used.\n      * @property {\"last\"|Integer} [includeWith.position] Position of icon in flyout list; will be added to end if not indicated. Integer is for use with {@link http://api.jquery.com/eq/}.\n      * @property {module:SVGEditor.Key} [key] The key to bind to the button\n      */\n      // Add buttons given by extension\n      $.each(ext.buttons, function (i, /** @type {module:SVGEditor.Button} */ btn) {\n        let {id} = btn;\n        let num = i;\n        // Give button a unique ID\n        while ($('#' + id).length) {\n          id = btn.id + '_' + (++num);\n        }\n\n        let icon;\n        if (!svgicons) {\n          icon = $('<img src=\"' + btn.icon + '\">');\n        } else {\n          fallbackObj[id] = btn.icon;\n          const svgicon = btn.svgicon || btn.id;\n          if (btn.type === 'app_menu') {\n            placementObj['#' + id + ' > div'] = svgicon;\n          } else {\n            placementObj['#' + id] = svgicon;\n          }\n        }\n\n        let cls, parent;\n\n        // Set button up according to its type\n        switch (btn.type) {\n        case 'mode_flyout':\n        case 'mode':\n          cls = 'tool_button';\n          parent = '#tools_left';\n          break;\n        case 'context':\n          cls = 'tool_button';\n          parent = '#' + btn.panel;\n          // create the panel if it doesn't exist\n          if (!$(parent).length) {\n            $('<div>', {id: btn.panel}).appendTo('#tools_top');\n          }\n          break;\n        case 'app_menu':\n          cls = '';\n          parent = '#main_menu ul';\n          break;\n        }\n        let flyoutHolder, showBtn, refData, refBtn;\n        const button = $((btn.list || btn.type === 'app_menu') ? '<li/>' : '<div/>')\n          .attr('id', id)\n          .attr('title', btn.title)\n          .addClass(cls);\n        if (!btn.includeWith && !btn.list) {\n          if ('position' in btn) {\n            if ($(parent).children().eq(btn.position).length) {\n              $(parent).children().eq(btn.position).before(button);\n            } else {\n              $(parent).children().last().before(button);\n            }\n          } else {\n            button.appendTo(parent);\n          }\n\n          if (btn.type === 'mode_flyout') {\n          // Add to flyout menu / make flyout menu\n            // const opts = btn.includeWith;\n            // // opts.button, default, position\n            refBtn = $(button);\n\n            flyoutHolder = refBtn.parent();\n            // Create a flyout menu if there isn't one already\n            let tlsId;\n            if (!refBtn.parent().hasClass('tools_flyout')) {\n              // Create flyout placeholder\n              tlsId = refBtn[0].id.replace('tool_', 'tools_');\n              showBtn = refBtn.clone()\n                .attr('id', tlsId + '_show')\n                .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n              refBtn.before(showBtn);\n\n              // Create a flyout div\n              flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n              flyoutHolder.data('isLibrary', true);\n              showBtn.data('isLibrary', true);\n            }\n            // refData = Actions.getButtonData(opts.button);\n\n            placementObj['#' + tlsId + '_show'] = btn.id;\n            // TODO: Find way to set the current icon using the iconloader if this is not default\n\n            // Include data for extension button as well as ref button\n            /* curH = */ holders['#' + flyoutHolder[0].id] = [{\n              sel: '#' + id,\n              fn: btn.events.click,\n              icon: btn.id,\n              // key: btn.key,\n              isDefault: true\n            }]; // , refData\n            //\n            // // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n            //\n            // const pos = ('position' in opts)?opts.position:'last';\n            // const len = flyoutHolder.children().length;\n            //\n            // // Add at given position or end\n            // if (!isNaN(pos) && pos >= 0 && pos < len) {\n            //   flyoutHolder.children().eq(pos).before(button);\n            // } else {\n            //   flyoutHolder.append(button);\n            //   curH.reverse();\n            // }\n          } else if (btn.type === 'app_menu') {\n            button.append('<div>').append(btn.title);\n          }\n        } else if (btn.list) {\n          // Add button to list\n          button.addClass('push_button');\n          $('#' + btn.list + '_opts').append(button);\n          if (btn.isDefault) {\n            $('#cur_' + btn.list).append(button.children().clone());\n            const svgicon = btn.svgicon || btn.id;\n            placementObj['#cur_' + btn.list] = svgicon;\n          }\n        } else if (btn.includeWith) {\n          // Add to flyout menu / make flyout menu\n          const opts = btn.includeWith;\n          // opts.button, default, position\n          refBtn = $(opts.button);\n\n          flyoutHolder = refBtn.parent();\n          // Create a flyout menu if there isn't one already\n          let tlsId;\n          if (!refBtn.parent().hasClass('tools_flyout')) {\n            // Create flyout placeholder\n            tlsId = refBtn[0].id.replace('tool_', 'tools_');\n            showBtn = refBtn.clone()\n              .attr('id', tlsId + '_show')\n              .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n            refBtn.before(showBtn);\n            // Create a flyout div\n            flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n          }\n\n          refData = Actions.getButtonData(opts.button);\n\n          if (opts.isDefault) {\n            placementObj['#' + tlsId + '_show'] = btn.id;\n          }\n          // TODO: Find way to set the current icon using the iconloader if this is not default\n\n          // Include data for extension button as well as ref button\n          const curH = holders['#' + flyoutHolder[0].id] = [{\n            sel: '#' + id,\n            fn: btn.events.click,\n            icon: btn.id,\n            key: btn.key,\n            isDefault: Boolean(btn.includeWith && btn.includeWith.isDefault)\n          }, refData];\n\n          // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n\n          const pos = ('position' in opts) ? opts.position : 'last';\n          const len = flyoutHolder.children().length;\n\n          // Add at given position or end\n          if (!isNaN(pos) && pos >= 0 && pos < len) {\n            flyoutHolder.children().eq(pos).before(button);\n          } else {\n            flyoutHolder.append(button);\n            curH.reverse();\n          }\n        }\n\n        if (!svgicons) {\n          button.append(icon);\n        }\n\n        if (!btn.list) {\n          // Add given events to button\n          $.each(btn.events, function (name, func) {\n            if (name === 'click' && btn.type === 'mode') {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map extension click events as well\n              if (isTouch() && name === 'click') {\n                name = 'mousedown';\n              }\n              if (btn.includeWith) {\n                button.bind(name, func);\n              } else {\n                button.bind(name, function () {\n                  if (toolButtonClick(button)) {\n                    func();\n                  }\n                });\n              }\n              if (btn.key) {\n                $(document).bind('keydown', btn.key, func);\n                if (btn.title) {\n                  button.attr('title', btn.title + ' [' + btn.key + ']');\n                }\n              }\n            } else {\n              button.bind(name, func);\n            }\n          });\n        }\n\n        setupFlyouts(holders);\n      });\n\n      $.each(btnSelects, function () {\n        addAltDropDown(this.elem, this.list, this.callback, {seticon: true});\n      });\n\n      if (svgicons) {\n        return new Promise((resolve, reject) => {\n          $.svgIcons(svgicons, {\n            w: 24, h: 24,\n            id_match: false,\n            no_img: (!isWebkit()),\n            fallback: fallbackObj,\n            placement: placementObj,\n            callback (icons) {\n              // Non-ideal hack to make the icon match the current size\n              // if (curPrefs.iconsize && curPrefs.iconsize !== 'm') {\n              if ($.pref('iconsize') !== 'm') {\n                prepResize();\n              }\n              runCallback();\n              resolve();\n            }\n          });\n        });\n      }\n    }\n    return runCallback();\n  };\n\n  const getPaint = function (color, opac, type) {\n    // update the editor's fill paint\n    const opts = {alpha: opac};\n    if (color.startsWith('url(#')) {\n      let refElem = svgCanvas.getRefElem(color);\n      if (refElem) {\n        refElem = refElem.cloneNode(true);\n      } else {\n        refElem = $('#' + type + '_color defs *')[0];\n      }\n      opts[refElem.tagName] = refElem;\n    } else if (color.startsWith('#')) {\n      opts.solidColor = color.substr(1);\n    } else {\n      opts.solidColor = 'none';\n    }\n    return new $.jGraduate.Paint(opts);\n  };\n\n  // $('#text').focus(function () { textBeingEntered = true; });\n  // $('#text').blur(function () { textBeingEntered = false; });\n\n  // bind the selected event to our function that handles updates to the UI\n  svgCanvas.bind('selected', selectedChanged);\n  svgCanvas.bind('transition', elementTransition);\n  svgCanvas.bind('changed', elementChanged);\n  svgCanvas.bind('saved', saveHandler);\n  svgCanvas.bind('exported', exportHandler);\n  svgCanvas.bind('exportedPDF', function (win, data) {\n    if (!data.output) { // Ignore Chrome\n      return;\n    }\n    const {exportWindowName} = data;\n    if (exportWindowName) {\n      exportWindow = window.open('', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n    }\n    if (!exportWindow || exportWindow.closed) {\n      $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n    exportWindow.location.href = data.output;\n  });\n  svgCanvas.bind('zoomed', zoomChanged);\n  svgCanvas.bind('zoomDone', zoomDone);\n  svgCanvas.bind(\n    'updateCanvas',\n    /**\n     * @param {external:Window} win\n     * @param {false} center\n     * @param {module:math.XYObject} newCtr\n     * @listens module:svgcanvas.SvgCanvas#event:updateCanvas\n     * @returns {undefined}\n     */\n    function (win, {center, newCtr}) {\n      updateCanvas(center, newCtr);\n    }\n  );\n  svgCanvas.bind('contextset', contextChanged);\n  svgCanvas.bind('extension_added', extAdded);\n  svgCanvas.textActions.setInputElem($('#text')[0]);\n\n  let str = '<div class=\"palette_item\" data-rgb=\"none\"></div>';\n  $.each(palette, function (i, item) {\n    str += '<div class=\"palette_item\" style=\"background-color: ' + item +\n      ';\" data-rgb=\"' + item + '\"></div>';\n  });\n  $('#palette').append(str);\n\n  // Set up editor background functionality\n  // TODO add checkerboard as \"pattern\"\n  const colorBlocks = ['#FFF', '#888', '#000']; // ,'url(data:image/gif;base64,R0lGODlhEAAQAIAAAP%2F%2F%2F9bW1iH5BAAAAAAALAAAAAAQABAAAAIfjG%2Bgq4jM3IFLJgpswNly%2FXkcBpIiVaInlLJr9FZWAQA7)'];\n  str = '';\n  $.each(colorBlocks, function () {\n    str += '<div class=\"color_block\" style=\"background-color:' + this + ';\"></div>';\n  });\n  $('#bg_blocks').append(str);\n  const blocks = $('#bg_blocks div');\n  const curBg = 'cur_background';\n  blocks.each(function () {\n    const blk = $(this);\n    blk.click(function () {\n      blocks.removeClass(curBg);\n      $(this).addClass(curBg);\n    });\n  });\n\n  setBackground($.pref('bkgd_color'), $.pref('bkgd_url'));\n\n  $('#image_save_opts input').val([$.pref('img_save')]);\n\n  const changeRectRadius = function (ctl) {\n    svgCanvas.setRectRadius(ctl.value);\n  };\n\n  const changeFontSize = function (ctl) {\n    svgCanvas.setFontSize(ctl.value);\n  };\n\n  const changeStrokeWidth = function (ctl) {\n    let val = ctl.value;\n    if (val === 0 && selectedElement && ['line', 'polyline'].includes(selectedElement.nodeName)) {\n      val = ctl.value = 1;\n    }\n    svgCanvas.setStrokeWidth(val);\n  };\n\n  const changeRotationAngle = function (ctl) {\n    svgCanvas.setRotationAngle(ctl.value);\n    $('#tool_reorient').toggleClass('disabled', parseInt(ctl.value, 10) === 0);\n  };\n\n  const changeOpacity = function (ctl, val) {\n    if (val == null) { val = ctl.value; }\n    $('#group_opacity').val(val);\n    if (!ctl || !ctl.handle) {\n      $('#opac_slider').slider('option', 'value', val);\n    }\n    svgCanvas.setOpacity(val / 100);\n  };\n\n  const changeBlur = function (ctl, val, noUndo) {\n    if (val == null) { val = ctl.value; }\n    $('#blur').val(val);\n    let complete = false;\n    if (!ctl || !ctl.handle) {\n      $('#blur_slider').slider('option', 'value', val);\n      complete = true;\n    }\n    if (noUndo) {\n      svgCanvas.setBlurNoUndo(val);\n    } else {\n      svgCanvas.setBlur(val, complete);\n    }\n  };\n\n  $('#stroke_style').change(function () {\n    svgCanvas.setStrokeAttr('stroke-dasharray', $(this).val());\n    operaRepaint();\n  });\n\n  $('#stroke_linejoin').change(function () {\n    svgCanvas.setStrokeAttr('stroke-linejoin', $(this).val());\n    operaRepaint();\n  });\n\n  // Lose focus for select elements when changed (Allows keyboard shortcuts to work better)\n  $('select').change(function () { $(this).blur(); });\n\n  // fired when user wants to move elements to another layer\n  let promptMoveLayerOnce = false;\n  $('#selLayerNames').change(function () {\n    const destLayer = this.options[this.selectedIndex].value;\n    const confirmStr = uiStrings.notification.QmoveElemsToLayer.replace('%s', destLayer);\n    const moveToLayer = function (ok) {\n      if (!ok) { return; }\n      promptMoveLayerOnce = true;\n      svgCanvas.moveSelectedToLayer(destLayer);\n      svgCanvas.clearSelection();\n      populateLayers();\n    };\n    if (destLayer) {\n      if (promptMoveLayerOnce) {\n        moveToLayer(true);\n      } else {\n        $.confirm(confirmStr, moveToLayer);\n      }\n    }\n  });\n\n  $('#font_family').change(function () {\n    svgCanvas.setFontFamily(this.value);\n  });\n\n  $('#seg_type').change(function () {\n    svgCanvas.setSegType($(this).val());\n  });\n\n  $('#text').bind('keyup input', function () {\n    svgCanvas.setTextContent(this.value);\n  });\n\n  $('#image_url').change(function () {\n    setImageURL(this.value);\n  });\n\n  $('#link_url').change(function () {\n    if (this.value.length) {\n      svgCanvas.setLinkURL(this.value);\n    } else {\n      svgCanvas.removeHyperlink();\n    }\n  });\n\n  $('#g_title').change(function () {\n    svgCanvas.setGroupTitle(this.value);\n  });\n\n  $('.attr_changer').change(function () {\n    const attr = this.getAttribute('data-attr');\n    let val = this.value;\n    const valid = isValidUnit(attr, val, selectedElement);\n\n    if (!valid) {\n      $.alert(uiStrings.notification.invalidAttrValGiven);\n      this.value = selectedElement.getAttribute(attr);\n      return false;\n    }\n\n    if (attr !== 'id' && attr !== 'class') {\n      if (isNaN(val)) {\n        val = svgCanvas.convertToNum(attr, val);\n      } else if (curConfig.baseUnit !== 'px') {\n        // Convert unitless value to one with given unit\n\n        const unitData = getTypeMap();\n\n        if (selectedElement[attr] || svgCanvas.getMode() === 'pathedit' || attr === 'x' || attr === 'y') {\n          val *= unitData[curConfig.baseUnit];\n        }\n      }\n    }\n\n    // if the user is changing the id, then de-select the element first\n    // change the ID, then re-select it with the new ID\n    if (attr === 'id') {\n      const elem = selectedElement;\n      svgCanvas.clearSelection();\n      elem.id = val;\n      svgCanvas.addToSelection([elem], true);\n    } else {\n      svgCanvas.changeSelectedAttribute(attr, val);\n    }\n    this.blur();\n  });\n\n  // Prevent selection of elements when shift-clicking\n  $('#palette').mouseover(function () {\n    const inp = $('<input type=\"hidden\">');\n    $(this).append(inp);\n    inp.focus().remove();\n  });\n\n  $('.palette_item').mousedown(function (evt) {\n    // shift key or right click for stroke\n    const picker = evt.shiftKey || evt.button === 2 ? 'stroke' : 'fill';\n    let color = $(this).data('rgb');\n    let paint;\n\n    // Webkit-based browsers returned 'initial' here for no stroke\n    if (color === 'none' || color === 'transparent' || color === 'initial') {\n      color = 'none';\n      paint = new $.jGraduate.Paint();\n    } else {\n      paint = new $.jGraduate.Paint({alpha: 100, solidColor: color.substr(1)});\n    }\n\n    paintBox[picker].setPaint(paint);\n    svgCanvas.setColor(picker, color);\n\n    if (color !== 'none' && svgCanvas.getPaintOpacity(picker) !== 1) {\n      svgCanvas.setPaintOpacity(picker, 1.0);\n    }\n    updateToolButtonState();\n  }).bind('contextmenu', function (e) { e.preventDefault(); });\n\n  $('#toggle_stroke_tools').on('click', function () {\n    $('#tools_bottom').toggleClass('expanded');\n  });\n\n  (function () {\n    const wArea = workarea[0];\n\n    let lastX = null, lastY = null,\n      panning = false, keypan = false;\n\n    $('#svgcanvas').bind('mousemove mouseup', function (evt) {\n      if (panning === false) { return; }\n\n      wArea.scrollLeft -= (evt.clientX - lastX);\n      wArea.scrollTop -= (evt.clientY - lastY);\n\n      lastX = evt.clientX;\n      lastY = evt.clientY;\n\n      if (evt.type === 'mouseup') { panning = false; }\n      return false;\n    }).mousedown(function (evt) {\n      if (evt.button === 1 || keypan === true) {\n        panning = true;\n        lastX = evt.clientX;\n        lastY = evt.clientY;\n        return false;\n      }\n    });\n\n    $(window).mouseup(function () {\n      panning = false;\n    });\n\n    $(document).bind('keydown', 'space', function (evt) {\n      svgCanvas.spaceKey = keypan = true;\n      evt.preventDefault();\n    }).bind('keyup', 'space', function (evt) {\n      evt.preventDefault();\n      svgCanvas.spaceKey = keypan = false;\n    }).bind('keydown', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomOutIcon);\n      }\n    }).bind('keyup', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomInIcon);\n      }\n    });\n\n    /**\n    * @param {boolean} active\n    * @returns {undefined}\n    */\n    editor.setPanning = function (active) {\n      svgCanvas.spaceKey = keypan = active;\n    };\n  }());\n\n  (function () {\n    const button = $('#main_icon');\n    const overlay = $('#main_icon span');\n    const list = $('#main_menu');\n\n    let onButton = false;\n    let height = 0;\n    let jsHover = true;\n    let setClick = false;\n\n    /*\n    // Currently unused\n    const hideMenu = function () {\n      list.fadeOut(200);\n    };\n    */\n\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('buttondown');\n        // do not hide if it was the file input as that input needs to be visible\n        // for its change event to fire\n        if (evt.target.tagName !== 'INPUT') {\n          list.fadeOut(200);\n        } else if (!setClick) {\n          setClick = true;\n          $(evt.target).click(function () {\n            list.css('margin-left', '-9999px').show();\n          });\n        }\n      }\n      onButton = false;\n    }).mousedown(function (evt) {\n      // $('.contextMenu').hide();\n      const islib = $(evt.target).closest('div.tools_flyout, .contextMenu').length;\n      if (!islib) {\n        $('.tools_flyout:visible,.contextMenu').fadeOut(250);\n      }\n    });\n\n    overlay.bind('mousedown', function () {\n      if (!button.hasClass('buttondown')) {\n        // Margin must be reset in case it was changed before;\n        list.css('margin-left', 0).show();\n        if (!height) {\n          height = list.height();\n        }\n        // Using custom animation as slideDown has annoying 'bounce effect'\n        list.css('height', 0).animate({\n          height\n        }, 200);\n        onButton = true;\n      } else {\n        list.fadeOut(200);\n      }\n      button.toggleClass('buttondown buttonup');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    const listItems = $('#main_menu li');\n\n    // Check if JS method of hovering needs to be used (Webkit bug)\n    listItems.mouseover(function () {\n      jsHover = ($(this).css('background-color') === 'rgba(0, 0, 0, 0)');\n\n      listItems.unbind('mouseover');\n      if (jsHover) {\n        listItems.mouseover(function () {\n          this.style.backgroundColor = '#FFC';\n        }).mouseout(function () {\n          this.style.backgroundColor = 'transparent';\n          return true;\n        });\n      }\n    });\n  }());\n  // Made public for UI customization.\n  // TODO: Group UI functions into a public editor.ui interface.\n  /**\n   * See {@link http://api.jquery.com/bind/#bind-eventType-eventData-handler}\n   * @callback module:SVGEditor.DropDownCallback\n   * @param {external:jQuery.Event} ev See {@link http://api.jquery.com/Types/#Event}\n   * @listens external:jQuery.Event\n   * @returns {undefined|boolean} Calls `preventDefault()` and `stopPropagation()`\n  */\n  /**\n   * @param {Element|string} elem DOM Element or selector\n   * @param {module:SVGEditor.DropDownCallback} callback Mouseup callback\n   * @param {boolean} dropUp\n   * @returns {undefined}\n  */\n  editor.addDropDown = function (elem, callback, dropUp) {\n    if (!$(elem).length) { return; } // Quit if called on non-existent element\n    const button = $(elem).find('button');\n    const list = $(elem).find('ul').attr('id', $(elem)[0].id + '-list');\n    if (dropUp) {\n      $(elem).addClass('dropup');\n    } else {\n      // Move list to place where it can overflow container\n      $('#option_lists').append(list);\n    }\n    list.find('li').bind('mouseup', callback);\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n      }\n      onButton = false;\n    });\n\n    button.bind('mousedown', function () {\n      if (!button.hasClass('down')) {\n        if (!dropUp) {\n          const pos = $(elem).position();\n          list.css({\n            top: pos.top + 24,\n            left: pos.left - 10\n          });\n        }\n        list.show();\n        onButton = true;\n      } else {\n        list.hide();\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n  };\n\n  editor.addDropDown('#font_family_dropdown', function () {\n    $('#font_family').val($(this).text()).change();\n  });\n\n  editor.addDropDown('#opacity_dropdown', function () {\n    if ($(this).find('div').length) { return; }\n    const perc = parseInt($(this).text().split('%')[0], 10);\n    changeOpacity(false, perc);\n  }, true);\n\n  // For slider usage, see: http://jqueryui.com/demos/slider/\n  $('#opac_slider').slider({\n    start () {\n      $('#opacity_dropdown li:not(.special)').hide();\n    },\n    stop () {\n      $('#opacity_dropdown li').show();\n      $(window).mouseup();\n    },\n    slide (evt, ui) {\n      changeOpacity(ui);\n    }\n  });\n\n  editor.addDropDown('#blur_dropdown', $.noop);\n\n  let slideStart = false;\n  $('#blur_slider').slider({\n    max: 10,\n    step: 0.1,\n    stop (evt, ui) {\n      slideStart = false;\n      changeBlur(ui);\n      $('#blur_dropdown li').show();\n      $(window).mouseup();\n    },\n    start () {\n      slideStart = true;\n    },\n    slide (evt, ui) {\n      changeBlur(ui, null, slideStart);\n    }\n  });\n\n  editor.addDropDown('#zoom_dropdown', function () {\n    const item = $(this);\n    const val = item.data('val');\n    if (val) {\n      zoomChanged(window, val);\n    } else {\n      changeZoom({value: parseFloat(item.text())});\n    }\n  }, true);\n\n  addAltDropDown('#stroke_linecap', '#linecap_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#stroke_linejoin', '#linejoin_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#tool_position', '#position_opts', function () {\n    const letter = this.id.replace('tool_pos', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, 'page');\n  }, {multiclick: true});\n\n  /*\n\n  When a flyout icon is selected\n    (if flyout) {\n    - Change the icon\n    - Make pressing the button run its stuff\n    }\n    - Run its stuff\n\n  When its shortcut key is pressed\n    - If not current in list, do as above\n    , else:\n    - Just run its stuff\n\n  */\n\n  // Unfocus text input when workarea is mousedowned.\n  (function () {\n    let inp;\n    const unfocus = function () {\n      $(inp).blur();\n    };\n\n    $('#svg_editor').find('button, select, input:not(#text)').focus(function () {\n      inp = this;\n      uiContext = 'toolbars';\n      workarea.mousedown(unfocus);\n    }).blur(function () {\n      uiContext = 'canvas';\n      workarea.unbind('mousedown', unfocus);\n      // Go back to selecting text if in textedit mode\n      if (svgCanvas.getMode() === 'textedit') {\n        $('#text').focus();\n      }\n    });\n  }());\n\n  const clickFHPath = function () {\n    if (toolButtonClick('#tool_fhpath')) {\n      svgCanvas.setMode('fhpath');\n    }\n  };\n\n  const clickLine = function () {\n    if (toolButtonClick('#tool_line')) {\n      svgCanvas.setMode('line');\n    }\n  };\n\n  const clickSquare = function () {\n    if (toolButtonClick('#tool_square')) {\n      svgCanvas.setMode('square');\n    }\n  };\n\n  const clickRect = function () {\n    if (toolButtonClick('#tool_rect')) {\n      svgCanvas.setMode('rect');\n    }\n  };\n\n  const clickFHRect = function () {\n    if (toolButtonClick('#tool_fhrect')) {\n      svgCanvas.setMode('fhrect');\n    }\n  };\n\n  const clickCircle = function () {\n    if (toolButtonClick('#tool_circle')) {\n      svgCanvas.setMode('circle');\n    }\n  };\n\n  const clickEllipse = function () {\n    if (toolButtonClick('#tool_ellipse')) {\n      svgCanvas.setMode('ellipse');\n    }\n  };\n\n  const clickFHEllipse = function () {\n    if (toolButtonClick('#tool_fhellipse')) {\n      svgCanvas.setMode('fhellipse');\n    }\n  };\n\n  const clickImage = function () {\n    if (toolButtonClick('#tool_image')) {\n      svgCanvas.setMode('image');\n    }\n  };\n\n  const clickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      svgCanvas.setMode('zoom');\n      workarea.css('cursor', zoomInIcon);\n    }\n  };\n\n  const zoomImage = function (multiplier) {\n    const res = svgCanvas.getResolution();\n    multiplier = multiplier ? res.zoom * multiplier : 1;\n    // setResolution(res.w * multiplier, res.h * multiplier, true);\n    $('#zoom').val(multiplier * 100);\n    svgCanvas.setZoom(multiplier);\n    zoomDone();\n    updateCanvas(true);\n  };\n\n  const dblclickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      zoomImage();\n      setSelectMode();\n    }\n  };\n\n  const clickText = function () {\n    if (toolButtonClick('#tool_text')) {\n      svgCanvas.setMode('text');\n    }\n  };\n\n  const clickPath = function () {\n    if (toolButtonClick('#tool_path')) {\n      svgCanvas.setMode('path');\n    }\n  };\n\n  // Delete is a contextual tool that only appears in the ribbon if\n  // an element has been selected\n  const deleteSelected = function () {\n    if (selectedElement != null || multiselected) {\n      svgCanvas.deleteSelectedElements();\n    }\n  };\n\n  const cutSelected = function () {\n    if (selectedElement != null || multiselected) {\n      svgCanvas.cutSelectedElements();\n    }\n  };\n\n  const copySelected = function () {\n    if (selectedElement != null || multiselected) {\n      svgCanvas.copySelectedElements();\n    }\n  };\n\n  const pasteInCenter = function () {\n    const zoom = svgCanvas.getZoom();\n    const x = (workarea[0].scrollLeft + workarea.width() / 2) / zoom - svgCanvas.contentW;\n    const y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;\n    svgCanvas.pasteElements('point', x, y);\n  };\n\n  const moveToTopSelected = function () {\n    if (selectedElement != null) {\n      svgCanvas.moveToTopSelectedElement();\n    }\n  };\n\n  const moveToBottomSelected = function () {\n    if (selectedElement != null) {\n      svgCanvas.moveToBottomSelectedElement();\n    }\n  };\n\n  const moveUpDownSelected = function (dir) {\n    if (selectedElement != null) {\n      svgCanvas.moveUpDownSelected(dir);\n    }\n  };\n\n  const convertToPath = function () {\n    if (selectedElement != null) {\n      svgCanvas.convertToPath();\n    }\n  };\n\n  const reorientPath = function () {\n    if (selectedElement != null) {\n      path.reorient();\n    }\n  };\n\n  const makeHyperlink = function () {\n    if (selectedElement != null || multiselected) {\n      $.prompt(uiStrings.notification.enterNewLinkURL, 'http://', function (url) {\n        if (url) { svgCanvas.makeHyperlink(url); }\n      });\n    }\n  };\n\n  const moveSelected = function (dx, dy) {\n    if (selectedElement != null || multiselected) {\n      if (curConfig.gridSnapping) {\n        // Use grid snap value regardless of zoom level\n        const multi = svgCanvas.getZoom() * curConfig.snappingStep;\n        dx *= multi;\n        dy *= multi;\n      }\n      svgCanvas.moveSelectedElements(dx, dy);\n    }\n  };\n\n  const linkControlPoints = function () {\n    $('#tool_node_link').toggleClass('push_button_pressed tool_button');\n    const linked = $('#tool_node_link').hasClass('push_button_pressed');\n    path.linkControlPoints(linked);\n  };\n\n  const clonePathNode = function () {\n    if (path.getNodePoint()) {\n      path.clonePathNode();\n    }\n  };\n\n  const deletePathNode = function () {\n    if (path.getNodePoint()) {\n      path.deletePathNode();\n    }\n  };\n\n  const addSubPath = function () {\n    const button = $('#tool_add_subpath');\n    const sp = !button.hasClass('push_button_pressed');\n    button.toggleClass('push_button_pressed tool_button');\n    path.addSubPath(sp);\n  };\n\n  const opencloseSubPath = function () {\n    path.opencloseSubPath();\n  };\n\n  const selectNext = function () {\n    svgCanvas.cycleElement(1);\n  };\n\n  const selectPrev = function () {\n    svgCanvas.cycleElement(0);\n  };\n\n  const rotateSelected = function (cw, step) {\n    if (selectedElement == null || multiselected) { return; }\n    if (!cw) { step *= -1; }\n    const angle = parseFloat($('#angle').val()) + step;\n    svgCanvas.setRotationAngle(angle);\n    updateContextPanel();\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n   * @returns {undefined}\n   */\n  const clickClear = function () {\n    const [x, y] = curConfig.dimensions;\n    $.confirm(uiStrings.notification.QwantToClear, function (ok) {\n      if (!ok) { return; }\n      setSelectMode();\n      svgCanvas.clear();\n      svgCanvas.setResolution(x, y);\n      updateCanvas(true);\n      zoomImage();\n      populateLayers();\n      updateContextPanel();\n      prepPaints();\n      svgCanvas.runExtensions('onNewDocument');\n    });\n  };\n\n  const clickBold = function () {\n    svgCanvas.setBold(!svgCanvas.getBold());\n    updateContextPanel();\n    return false;\n  };\n\n  const clickItalic = function () {\n    svgCanvas.setItalic(!svgCanvas.getItalic());\n    updateContextPanel();\n    return false;\n  };\n\n  const clickSave = function () {\n    // In the future, more options can be provided here\n    const saveOpts = {\n      images: $.pref('img_save'),\n      round_digits: 6\n    };\n    svgCanvas.save(saveOpts);\n  };\n\n  let loadingURL;\n  const clickExport = function () {\n    $.select('Select an image type for export: ', [\n      // See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support\n      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'\n      'PNG',\n      'JPEG', 'BMP', 'WEBP', 'PDF'\n    ], async function (imgType) { // todo: replace hard-coded msg with uiStrings.notification.\n      if (!imgType) {\n        return;\n      }\n      // Open placeholder window (prevents popup)\n      let exportWindowName;\n      function openExportWindow () {\n        const str = uiStrings.notification.loadingImage;\n        if (curConfig.exportWindowType === 'new') {\n          editor.exportWindowCt++;\n        }\n        exportWindowName = curConfig.canvasName + editor.exportWindowCt;\n        let popHTML, popURL;\n        if (loadingURL) {\n          popURL = loadingURL;\n        } else {\n          popHTML = `<!DOCTYPE html><html>\n            <head>\n              <meta charset=\"utf-8\">\n              <title>${str}</title>\n            </head>\n            <body><h1>${str}</h1></body>\n          <html>`;\n          if (typeof URL !== 'undefined' && URL.createObjectURL) {\n            const blob = new Blob([popHTML], {type: 'text/html'});\n            popURL = URL.createObjectURL(blob);\n          } else {\n            popURL = 'data:text/html;base64;charset=utf-8,' + Utils.encode64(popHTML);\n          }\n          loadingURL = popURL;\n        }\n        exportWindow = window.open(popURL, exportWindowName);\n      }\n      const chrome = isChrome();\n      if (imgType === 'PDF') {\n        if (!customExportPDF && !chrome) {\n          openExportWindow();\n        }\n        svgCanvas.exportPDF(exportWindowName);\n      } else {\n        if (!customExportImage) {\n          openExportWindow();\n        }\n        const quality = parseInt($('#image-slider').val(), 10) / 100;\n        /* const results = */ await svgCanvas.rasterExport(imgType, quality, exportWindowName);\n      }\n    }, function () {\n      const sel = $(this);\n      if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {\n        if (!$('#image-slider').length) {\n          $(`<div><label>${uiStrings.ui.quality}\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>`).appendTo(sel.parent());\n        }\n      } else {\n        $('#image-slider').parent().remove();\n      }\n    });\n  };\n\n  // by default, svgCanvas.open() is a no-op.\n  // it is up to an extension mechanism (opera widget, etc)\n  // to call setCustomHandlers() which will make it do something\n  const clickOpen = function () {\n    svgCanvas.open();\n  };\n\n  const clickImport = function () {\n  };\n\n  const clickUndo = function () {\n    if (undoMgr.getUndoStackSize() > 0) {\n      undoMgr.undo();\n      populateLayers();\n    }\n  };\n\n  const clickRedo = function () {\n    if (undoMgr.getRedoStackSize() > 0) {\n      undoMgr.redo();\n      populateLayers();\n    }\n  };\n\n  const clickGroup = function () {\n    // group\n    if (multiselected) {\n      svgCanvas.groupSelectedElements();\n    // ungroup\n    } else if (selectedElement) {\n      svgCanvas.ungroupSelectedElement();\n    }\n  };\n\n  const clickClone = function () {\n    svgCanvas.cloneSelectedElements(20, 20);\n  };\n\n  const clickAlign = function () {\n    const letter = this.id.replace('tool_align', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());\n  };\n\n  const clickWireframe = function () {\n    $('#tool_wireframe').toggleClass('push_button_pressed tool_button');\n    workarea.toggleClass('wireframe');\n\n    if (supportsNonSS) { return; }\n    const wfRules = $('#wireframe_rules');\n    if (!wfRules.length) {\n      /* wfRules = */ $('<style id=\"wireframe_rules\"></style>').appendTo('head');\n    } else {\n      wfRules.empty();\n    }\n\n    updateWireFrame();\n  };\n\n  $('#svg_docprops_container, #svg_prefs_container').draggable({\n    cancel: 'button,fieldset',\n    containment: 'window'\n  }).css('position', 'absolute');\n\n  let docprops = false;\n  let preferences = false;\n\n  const showDocProperties = function () {\n    if (docprops) { return; }\n    docprops = true;\n\n    // This selects the correct radio button by using the array notation\n    $('#image_save_opts input').val([$.pref('img_save')]);\n\n    // update resolution option with actual resolution\n    const res = svgCanvas.getResolution();\n    if (curConfig.baseUnit !== 'px') {\n      res.w = convertUnit(res.w) + curConfig.baseUnit;\n      res.h = convertUnit(res.h) + curConfig.baseUnit;\n    }\n\n    $('#canvas_width').val(res.w);\n    $('#canvas_height').val(res.h);\n    $('#canvas_title').val(svgCanvas.getDocumentTitle());\n\n    $('#svg_docprops').show();\n  };\n\n  const showPreferences = function () {\n    if (preferences) { return; }\n    preferences = true;\n    $('#main_menu').hide();\n\n    // Update background color with current one\n    const blocks = $('#bg_blocks div');\n    const curBg = 'cur_background';\n    const canvasBg = curPrefs.bkgd_color;\n    const url = $.pref('bkgd_url');\n    blocks.each(function () {\n      const blk = $(this);\n      const isBg = blk.css('background-color') === canvasBg;\n      blk.toggleClass(curBg, isBg);\n      if (isBg) { $('#canvas_bg_url').removeClass(curBg); }\n    });\n    if (!canvasBg) { blocks.eq(0).addClass(curBg); }\n    if (url) {\n      $('#canvas_bg_url').val(url);\n    }\n    $('#grid_snapping_on').prop('checked', curConfig.gridSnapping);\n    $('#grid_snapping_step').attr('value', curConfig.snappingStep);\n    $('#grid_color').attr('value', curConfig.gridColor);\n\n    $('#svg_prefs').show();\n  };\n\n  const hideSourceEditor = function () {\n    $('#svg_source_editor').hide();\n    editingsource = false;\n    $('#svg_source_textarea').blur();\n  };\n\n  const saveSourceEditor = function () {\n    if (!editingsource) { return; }\n\n    const saveChanges = function () {\n      svgCanvas.clearSelection();\n      hideSourceEditor();\n      zoomImage();\n      populateLayers();\n      updateTitle();\n      prepPaints();\n    };\n\n    if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {\n      $.confirm(uiStrings.notification.QerrorsRevertToSource, function (ok) {\n        if (!ok) { return false; }\n        saveChanges();\n      });\n    } else {\n      saveChanges();\n    }\n    setSelectMode();\n  };\n\n  const hideDocProperties = function () {\n    $('#svg_docprops').hide();\n    $('#canvas_width,#canvas_height').removeAttr('disabled');\n    $('#resolution')[0].selectedIndex = 0;\n    $('#image_save_opts input').val([$.pref('img_save')]);\n    docprops = false;\n  };\n\n  const hidePreferences = function () {\n    $('#svg_prefs').hide();\n    preferences = false;\n  };\n\n  const saveDocProperties = function () {\n    // set title\n    const newTitle = $('#canvas_title').val();\n    updateTitle(newTitle);\n    svgCanvas.setDocumentTitle(newTitle);\n\n    // update resolution\n    const width = $('#canvas_width'), w = width.val();\n    const height = $('#canvas_height'), h = height.val();\n\n    if (w !== 'fit' && !isValidUnit('width', w)) {\n      $.alert(uiStrings.notification.invalidAttrValGiven);\n      width.parent().addClass('error');\n      return false;\n    }\n\n    width.parent().removeClass('error');\n\n    if (h !== 'fit' && !isValidUnit('height', h)) {\n      $.alert(uiStrings.notification.invalidAttrValGiven);\n      height.parent().addClass('error');\n      return false;\n    }\n\n    height.parent().removeClass('error');\n\n    if (!svgCanvas.setResolution(w, h)) {\n      $.alert(uiStrings.notification.noContentToFitTo);\n      return false;\n    }\n\n    // Set image save option\n    $.pref('img_save', $('#image_save_opts :checked').val());\n    updateCanvas();\n    hideDocProperties();\n  };\n\n  /**\n  * Save user preferences based on current values in the UI.\n  * @function module:SVGEditor.savePreferences\n  * @returns {undefined}\n  */\n  const savePreferences = editor.savePreferences = async function () {\n    // Set background\n    const color = $('#bg_blocks div.cur_background').css('background-color') || '#FFF';\n    setBackground(color, $('#canvas_bg_url').val());\n\n    // set language\n    const lang = $('#lang_select').val();\n    if (lang !== $.pref('lang')) {\n      const {langParam, langData} = await editor.putLocale(lang, goodLangs, curConfig);\n      await setLang(langParam, langData);\n    }\n\n    // set icon size\n    setIconSize($('#iconsize').val());\n\n    // set grid setting\n    curConfig.gridSnapping = $('#grid_snapping_on')[0].checked;\n    curConfig.snappingStep = $('#grid_snapping_step').val();\n    curConfig.gridColor = $('#grid_color').val();\n    curConfig.showRulers = $('#show_rulers')[0].checked;\n\n    $('#rulers').toggle(curConfig.showRulers);\n    if (curConfig.showRulers) { updateRulers(); }\n    curConfig.baseUnit = $('#base_unit').val();\n\n    svgCanvas.setConfig(curConfig);\n\n    updateCanvas();\n    hidePreferences();\n  };\n\n  let resetScrollPos = $.noop;\n\n  const cancelOverlays = function () {\n    $('#dialog_box').hide();\n    if (!editingsource && !docprops && !preferences) {\n      if (curContext) {\n        svgCanvas.leaveContext();\n      }\n      return;\n    }\n\n    if (editingsource) {\n      if (origSource !== $('#svg_source_textarea').val()) {\n        $.confirm(uiStrings.notification.QignoreSourceChanges, function (ok) {\n          if (ok) { hideSourceEditor(); }\n        });\n      } else {\n        hideSourceEditor();\n      }\n    } else if (docprops) {\n      hideDocProperties();\n    } else if (preferences) {\n      hidePreferences();\n    }\n    resetScrollPos();\n  };\n\n  const winWh = {width: $(window).width(), height: $(window).height()};\n\n  // Fix for Issue 781: Drawing area jumps to top-left corner on window resize (IE9)\n  if (isIE()) {\n    resetScrollPos = function () {\n      if (workarea[0].scrollLeft === 0 && workarea[0].scrollTop === 0) {\n        workarea[0].scrollLeft = curScrollPos.left;\n        workarea[0].scrollTop = curScrollPos.top;\n      }\n    };\n\n    curScrollPos = {\n      left: workarea[0].scrollLeft,\n      top: workarea[0].scrollTop\n    };\n\n    $(window).resize(resetScrollPos);\n    editor.ready(function () {\n      // TODO: Find better way to detect when to do this to minimize\n      // flickering effect\n      setTimeout(function () {\n        resetScrollPos();\n      }, 500);\n    });\n\n    workarea.scroll(function () {\n      curScrollPos = {\n        left: workarea[0].scrollLeft,\n        top: workarea[0].scrollTop\n      };\n    });\n  }\n\n  $(window).resize(function (evt) {\n    $.each(winWh, function (type, val) {\n      const curval = $(window)[type]();\n      workarea[0]['scroll' + (type === 'width' ? 'Left' : 'Top')] -= (curval - val) / 2;\n      winWh[type] = curval;\n    });\n    setFlyoutPositions();\n  });\n\n  workarea.scroll(function () {\n    // TODO: jQuery's scrollLeft/Top() wouldn't require a null check\n    if ($('#ruler_x').length) {\n      $('#ruler_x')[0].scrollLeft = workarea[0].scrollLeft;\n    }\n    if ($('#ruler_y').length) {\n      $('#ruler_y')[0].scrollTop = workarea[0].scrollTop;\n    }\n  });\n\n  $('#url_notice').click(function () {\n    $.alert(this.title);\n  });\n\n  $('#change_image_url').click(promptImgURL);\n\n  // added these event handlers for all the push buttons so they\n  // behave more like buttons being pressed-in and not images\n  (function () {\n    const toolnames = ['clear', 'open', 'save', 'source', 'delete', 'delete_multi', 'paste', 'clone', 'clone_multi', 'move_top', 'move_bottom'];\n    const curClass = 'tool_button_current';\n\n    let allTools = '';\n\n    $.each(toolnames, function (i, item) {\n      allTools += (i ? ',' : '') + '#tool_' + item;\n    });\n\n    $(allTools).mousedown(function () {\n      $(this).addClass(curClass);\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n\n    $('#tool_undo, #tool_redo').mousedown(function () {\n      if (!$(this).hasClass('disabled')) { $(this).addClass(curClass); }\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n  }());\n\n  // switch modifier key in tooltips if mac\n  // NOTE: This code is not used yet until I can figure out how to successfully bind ctrl/meta\n  // in Opera and Chrome\n  if (isMac() && !window.opera) {\n    const shortcutButtons = [\n      'tool_clear', 'tool_save', 'tool_source',\n      'tool_undo', 'tool_redo', 'tool_clone'\n    ];\n    let i = shortcutButtons.length;\n    while (i--) {\n      const button = document.getElementById(shortcutButtons[i]);\n      if (button) {\n        const {title} = button;\n        const index = title.indexOf('Ctrl+');\n        button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');\n      }\n    }\n  }\n\n  // TODO: go back to the color boxes having white background-color and then setting\n  //  background-image to none.png (otherwise partially transparent gradients look weird)\n  const colorPicker = function (elem) {\n    const picker = elem.attr('id') === 'stroke_color' ? 'stroke' : 'fill';\n    // const opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));\n    const title = picker === 'stroke'\n      ? uiStrings.ui.pick_stroke_paint_opacity\n      : uiStrings.ui.pick_fill_paint_opacity;\n    // let wasNone = false; // Currently unused\n    const pos = elem.offset();\n    let {paint} = paintBox[picker];\n    $('#color_picker')\n      .draggable({\n        cancel: '.jGraduate_tabs, .jGraduate_colPick, .jGraduate_gradPick, .jPicker',\n        containment: 'window'\n      })\n      .css(curConfig.colorPickerCSS || {left: pos.left - 140, bottom: 40})\n      .jGraduate(\n        {\n          paint,\n          window: {pickerTitle: title},\n          images: {clientPath: curConfig.jGraduatePath},\n          newstop: 'inverse'\n        },\n        function (p) {\n          paint = new $.jGraduate.Paint(p);\n          paintBox[picker].setPaint(paint);\n          svgCanvas.setPaint(picker, paint);\n          $('#color_picker').hide();\n        },\n        function () {\n          $('#color_picker').hide();\n        }\n      );\n  };\n\n  const PaintBox = function (container, type) {\n    let paintColor, paintOpacity;\n    const cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke'];\n    // set up gradients to be used for the buttons\n    const svgdocbox = new DOMParser().parseFromString(\n      `<svg xmlns=\"http://www.w3.org/2000/svg\">\n        <rect width=\"16.5\" height=\"16.5\"\n          fill=\"#${cur.color}\" opacity=\"${cur.opacity}\"/>\n        <defs><linearGradient id=\"gradbox_\"/></defs>\n      </svg>`,\n      'text/xml'\n    );\n\n    let docElem = svgdocbox.documentElement;\n    docElem = $(container)[0].appendChild(document.importNode(docElem, true));\n    docElem.setAttribute('width', 16.5);\n\n    this.rect = docElem.firstElementChild;\n    this.defs = docElem.getElementsByTagName('defs')[0];\n    this.grad = this.defs.firstElementChild;\n    this.paint = new $.jGraduate.Paint({solidColor: cur.color});\n    this.type = type;\n\n    this.setPaint = function (paint, apply) {\n      this.paint = paint;\n\n      const ptype = paint.type;\n      const opac = paint.alpha / 100;\n\n      let fillAttr = 'none';\n      switch (ptype) {\n      case 'solidColor':\n        fillAttr = (paint[ptype] !== 'none') ? '#' + paint[ptype] : paint[ptype];\n        break;\n      case 'linearGradient':\n      case 'radialGradient':\n        this.grad.remove();\n        this.grad = this.defs.appendChild(paint[ptype]);\n        const id = this.grad.id = 'gradbox_' + this.type;\n        fillAttr = 'url(#' + id + ')';\n        break;\n      }\n\n      this.rect.setAttribute('fill', fillAttr);\n      this.rect.setAttribute('opacity', opac);\n\n      if (apply) {\n        svgCanvas.setColor(this.type, paintColor, true);\n        svgCanvas.setPaintOpacity(this.type, paintOpacity, true);\n      }\n    };\n\n    this.update = function (apply) {\n      if (!selectedElement) { return; }\n\n      const {type} = this;\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        // These elements don't have fill or stroke, so don't change\n        // the current value\n        return;\n      case 'g':\n      case 'a': {\n        const childs = selectedElement.getElementsByTagName('*');\n\n        let gPaint = null;\n        for (let i = 0, len = childs.length; i < len; i++) {\n          const elem = childs[i];\n          const p = elem.getAttribute(type);\n          if (i === 0) {\n            gPaint = p;\n          } else if (gPaint !== p) {\n            gPaint = null;\n            break;\n          }\n        }\n\n        if (gPaint === null) {\n          // No common color, don't update anything\n          paintColor = null;\n          return;\n        }\n        paintColor = gPaint;\n        paintOpacity = 1;\n        break;\n      } default:\n        paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));\n        if (isNaN(paintOpacity)) {\n          paintOpacity = 1.0;\n        }\n\n        const defColor = type === 'fill' ? 'black' : 'none';\n        paintColor = selectedElement.getAttribute(type) || defColor;\n      }\n\n      if (apply) {\n        svgCanvas.setColor(type, paintColor, true);\n        svgCanvas.setPaintOpacity(type, paintOpacity, true);\n      }\n\n      paintOpacity *= 100;\n\n      const paint = getPaint(paintColor, paintOpacity, type);\n      // update the rect inside #fill_color/#stroke_color\n      this.setPaint(paint);\n    };\n\n    this.prep = function () {\n      const ptype = this.paint.type;\n\n      switch (ptype) {\n      case 'linearGradient':\n      case 'radialGradient':\n        const paint = new $.jGraduate.Paint({copy: this.paint});\n        svgCanvas.setPaint(type, paint);\n        break;\n      }\n    };\n  };\n\n  paintBox.fill = new PaintBox('#fill_color', 'fill');\n  paintBox.stroke = new PaintBox('#stroke_color', 'stroke');\n\n  $('#stroke_width').val(curConfig.initStroke.width);\n  $('#group_opacity').val(curConfig.initOpacity * 100);\n\n  // Use this SVG elem to test vectorEffect support\n  const testEl = paintBox.fill.rect.cloneNode(false);\n  testEl.setAttribute('style', 'vector-effect:non-scaling-stroke');\n  const supportsNonSS = (testEl.style.vectorEffect === 'non-scaling-stroke');\n  testEl.removeAttribute('style');\n  const svgdocbox = paintBox.fill.rect.ownerDocument;\n  // Use this to test support for blur element. Seems to work to test support in Webkit\n  const blurTest = svgdocbox.createElementNS(NS.SVG, 'feGaussianBlur');\n  if (blurTest.stdDeviationX === undefined) {\n    $('#tool_blur').hide();\n  }\n  $(blurTest).remove();\n\n  // Test for zoom icon support\n  (function () {\n    const pre = '-' + uaPrefix.toLowerCase() + '-zoom-';\n    const zoom = pre + 'in';\n    workarea.css('cursor', zoom);\n    if (workarea.css('cursor') === zoom) {\n      zoomInIcon = zoom;\n      zoomOutIcon = pre + 'out';\n    }\n    workarea.css('cursor', 'auto');\n  }());\n\n  // Test for embedImage support (use timeout to not interfere with page load)\n  setTimeout(function () {\n    svgCanvas.embedImage('images/logo.png', function (datauri) {\n      if (!datauri) {\n        // Disable option\n        $('#image_save_opts [value=embed]').attr('disabled', 'disabled');\n        $('#image_save_opts input').val(['ref']);\n        $.pref('img_save', 'ref');\n        $('#image_opt_embed').css('color', '#666').attr(\n          'title',\n          uiStrings.notification.featNotSupported\n        );\n      }\n    });\n  }, 1000);\n\n  $('#fill_color, #tool_fill .icon_label').click(function () {\n    colorPicker($('#fill_color'));\n    updateToolButtonState();\n  });\n\n  $('#stroke_color, #tool_stroke .icon_label').click(function () {\n    colorPicker($('#stroke_color'));\n    updateToolButtonState();\n  });\n\n  $('#group_opacityLabel').click(function () {\n    $('#opacity_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#zoomLabel').click(function () {\n    $('#zoom_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#tool_move_top').mousedown(function (evt) {\n    $('#tools_stacking').show();\n    evt.preventDefault();\n  });\n\n  $('.layer_button').mousedown(function () {\n    $(this).addClass('layer_buttonpressed');\n  }).mouseout(function () {\n    $(this).removeClass('layer_buttonpressed');\n  }).mouseup(function () {\n    $(this).removeClass('layer_buttonpressed');\n  });\n\n  $('.push_button').mousedown(function () {\n    if (!$(this).hasClass('disabled')) {\n      $(this).addClass('push_button_pressed').removeClass('push_button');\n    }\n  }).mouseout(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  }).mouseup(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  });\n\n  // ask for a layer name\n  $('#layer_new').click(function () {\n    let uniqName,\n      i = svgCanvas.getCurrentDrawing().getNumLayers();\n    do {\n      uniqName = uiStrings.layers.layer + ' ' + (++i);\n    } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));\n\n    $.prompt(uiStrings.notification.enterUniqueLayerName, uniqName, function (newName) {\n      if (!newName) { return; }\n      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n        $.alert(uiStrings.notification.dupeLayerName);\n        return;\n      }\n      svgCanvas.createLayer(newName);\n      updateContextPanel();\n      populateLayers();\n    });\n  });\n\n  function deleteLayer () {\n    if (svgCanvas.deleteCurrentLayer()) {\n      updateContextPanel();\n      populateLayers();\n      // This matches what SvgCanvas does\n      // TODO: make this behavior less brittle (svg-editor should get which\n      // layer is selected from the canvas and then select that one in the UI)\n      $('#layerlist tr.layer').removeClass('layersel');\n      $('#layerlist tr.layer:first').addClass('layersel');\n    }\n  }\n\n  function cloneLayer () {\n    const name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';\n\n    $.prompt(uiStrings.notification.enterUniqueLayerName, name, function (newName) {\n      if (!newName) { return; }\n      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n        $.alert(uiStrings.notification.dupeLayerName);\n        return;\n      }\n      svgCanvas.cloneLayer(newName);\n      updateContextPanel();\n      populateLayers();\n    });\n  }\n\n  function mergeLayer () {\n    if ($('#layerlist tr.layersel').index() === svgCanvas.getCurrentDrawing().getNumLayers() - 1) {\n      return;\n    }\n    svgCanvas.mergeLayer();\n    updateContextPanel();\n    populateLayers();\n  }\n\n  function moveLayer (pos) {\n    const total = svgCanvas.getCurrentDrawing().getNumLayers();\n\n    let curIndex = $('#layerlist tr.layersel').index();\n    if (curIndex > 0 || curIndex < total - 1) {\n      curIndex += pos;\n      svgCanvas.setCurrentLayerPosition(total - curIndex - 1);\n      populateLayers();\n    }\n  }\n\n  $('#layer_delete').click(deleteLayer);\n\n  $('#layer_up').click(() => {\n    moveLayer(-1);\n  });\n\n  $('#layer_down').click(() => {\n    moveLayer(1);\n  });\n\n  $('#layer_rename').click(function () {\n    // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused\n    const oldName = $('#layerlist tr.layersel td.layername').text();\n    $.prompt(uiStrings.notification.enterNewLayerName, '', function (newName) {\n      if (!newName) { return; }\n      if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n        $.alert(uiStrings.notification.layerHasThatName);\n        return;\n      }\n\n      svgCanvas.renameCurrentLayer(newName);\n      populateLayers();\n    });\n  });\n\n  const SIDEPANEL_MAXWIDTH = 300;\n  const SIDEPANEL_OPENWIDTH = 150;\n  let sidedrag = -1, sidedragging = false, allowmove = false;\n\n  /**\n   * @param {Float} delta\n   * @fires module:svgcanvas.SvgCanvas#event:ext-workareaResized\n   * @returns {undefined}\n   */\n  const changeSidePanelWidth = function (delta) {\n    const rulerX = $('#ruler_x');\n    $('#sidepanels').width('+=' + delta);\n    $('#layerpanel').width('+=' + delta);\n    rulerX.css('right', parseInt(rulerX.css('right'), 10) + delta);\n    workarea.css('right', parseInt(workarea.css('right'), 10) + delta);\n    svgCanvas.runExtensions('workareaResized');\n  };\n\n  const resizeSidePanel = function (evt) {\n    if (!allowmove) { return; }\n    if (sidedrag === -1) { return; }\n    sidedragging = true;\n    let deltaX = sidedrag - evt.pageX;\n    const sideWidth = $('#sidepanels').width();\n    if (sideWidth + deltaX > SIDEPANEL_MAXWIDTH) {\n      deltaX = SIDEPANEL_MAXWIDTH - sideWidth;\n      // sideWidth = SIDEPANEL_MAXWIDTH;\n    } else if (sideWidth + deltaX < 2) {\n      deltaX = 2 - sideWidth;\n      // sideWidth = 2;\n    }\n    if (deltaX === 0) { return; }\n    sidedrag -= deltaX;\n    changeSidePanelWidth(deltaX);\n  };\n\n  /**\n   * If width is non-zero, then fully close it; otherwise fully open it.\n   * @param {boolean} close Forces the side panel closed\n   * @returns {undefined}\n   */\n  const toggleSidePanel = function (close) {\n    const w = $('#sidepanels').width();\n    const deltaX = (w > 2 || close ? 2 : SIDEPANEL_OPENWIDTH) - w;\n    changeSidePanelWidth(deltaX);\n  };\n\n  $('#sidepanel_handle')\n    .mousedown(function (evt) {\n      sidedrag = evt.pageX;\n      $(window).mousemove(resizeSidePanel);\n      allowmove = false;\n      // Silly hack for Chrome, which always runs mousemove right after mousedown\n      setTimeout(function () {\n        allowmove = true;\n      }, 20);\n    })\n    .mouseup(function (evt) {\n      if (!sidedragging) { toggleSidePanel(); }\n      sidedrag = -1;\n      sidedragging = false;\n    });\n\n  $(window).mouseup(function () {\n    sidedrag = -1;\n    sidedragging = false;\n    $('#svg_editor').unbind('mousemove', resizeSidePanel);\n  });\n\n  populateLayers();\n\n  // function changeResolution (x,y) {\n  //   const {zoom} = svgCanvas.getResolution();\n  //   setResolution(x * zoom, y * zoom);\n  // }\n\n  const centerCanvas = () => {\n    // this centers the canvas vertically in the workarea (horizontal handled in CSS)\n    workarea.css('line-height', workarea.height() + 'px');\n  };\n\n  $(window).bind('load resize', centerCanvas);\n\n  function stepFontSize (elem, step) {\n    const origVal = Number(elem.value);\n    const sugVal = origVal + step;\n    const increasing = sugVal >= origVal;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 24) {\n      if (increasing) {\n        return Math.round(origVal * 1.1);\n      }\n      return Math.round(origVal / 1.1);\n    }\n    if (origVal <= 1) {\n      if (increasing) {\n        return origVal * 2;\n      }\n      return origVal / 2;\n    }\n    return sugVal;\n  }\n\n  function stepZoom (elem, step) {\n    const origVal = Number(elem.value);\n    if (origVal === 0) { return 100; }\n    const sugVal = origVal + step;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 100) {\n      return sugVal;\n    }\n    if (sugVal >= origVal) {\n      return origVal * 2;\n    }\n    return origVal / 2;\n  }\n\n  // function setResolution (w, h, center) {\n  //   updateCanvas();\n  //   // w -= 0; h -= 0;\n  //   // $('#svgcanvas').css({width: w, height: h});\n  //   // $('#canvas_width').val(w);\n  //   // $('#canvas_height').val(h);\n  //   //\n  //   // if (center) {\n  //   //   const wArea = workarea;\n  //   //   const scrollY = h/2 - wArea.height()/2;\n  //   //   const scrollX = w/2 - wArea.width()/2;\n  //   //   wArea[0].scrollTop = scrollY;\n  //   //   wArea[0].scrollLeft = scrollX;\n  //   // }\n  // }\n\n  $('#resolution').change(function () {\n    const wh = $('#canvas_width,#canvas_height');\n    if (!this.selectedIndex) {\n      if ($('#canvas_width').val() === 'fit') {\n        wh.removeAttr('disabled').val(100);\n      }\n    } else if (this.value === 'content') {\n      wh.val('fit').attr('disabled', 'disabled');\n    } else {\n      const dims = this.value.split('x');\n      $('#canvas_width').val(dims[0]);\n      $('#canvas_height').val(dims[1]);\n      wh.removeAttr('disabled');\n    }\n  });\n\n  // Prevent browser from erroneously repopulating fields\n  $('input,select').attr('autocomplete', 'off');\n\n  const dialogSelectors = [\n    '#tool_source_cancel', '#tool_docprops_cancel',\n    '#tool_prefs_cancel', '.overlay'\n  ];\n  /**\n   * Associate all button actions as well as non-button keyboard shortcuts\n   * @namespace {PlainObject} module:SVGEditor~Actions\n   */\n  const Actions = (function () {\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ToolButton\n    * @property {string} sel The CSS selector for the tool\n    * @property {external:jQuery.Function} fn A handler to be attached to the `evt`\n    * @property {string} evt The event for which the `fn` listener will be added\n    * @property {module:SVGEditor.Key} [key] [key, preventDefault, NoDisableInInput]\n    * @property {string} [parent] Selector\n    * @property {boolean} [hidekey] Whether to show key value in title\n    * @property {string} [icon] The button ID\n    * @property {boolean} isDefault For flyout holders\n    */\n    /**\n     *\n     * @name module:SVGEditor~ToolButtons\n     * @type {module:SVGEditor.ToolButton[]}\n     */\n    const toolButtons = [\n      {sel: '#tool_select', fn: clickSelect, evt: 'click', key: ['V', true]},\n      {sel: '#tool_fhpath', fn: clickFHPath, evt: 'click', key: ['Q', true]},\n      {sel: '#tool_line', fn: clickLine, evt: 'click', key: ['L', true],\n        parent: '#tools_line', prepend: true},\n      {sel: '#tool_rect', fn: clickRect, evt: 'mouseup',\n        key: ['R', true], parent: '#tools_rect', icon: 'rect'},\n      {sel: '#tool_square', fn: clickSquare, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'square'},\n      {sel: '#tool_fhrect', fn: clickFHRect, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'fh_rect'},\n      {sel: '#tool_ellipse', fn: clickEllipse, evt: 'mouseup',\n        key: ['E', true], parent: '#tools_ellipse', icon: 'ellipse'},\n      {sel: '#tool_circle', fn: clickCircle, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'circle'},\n      {sel: '#tool_fhellipse', fn: clickFHEllipse, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'fh_ellipse'},\n      {sel: '#tool_path', fn: clickPath, evt: 'click', key: ['P', true]},\n      {sel: '#tool_text', fn: clickText, evt: 'click', key: ['T', true]},\n      {sel: '#tool_image', fn: clickImage, evt: 'mouseup'},\n      {sel: '#tool_zoom', fn: clickZoom, evt: 'mouseup', key: ['Z', true]},\n      {sel: '#tool_clear', fn: clickClear, evt: 'mouseup', key: ['N', true]},\n      {sel: '#tool_save', fn () {\n        if (editingsource) {\n          saveSourceEditor();\n        } else {\n          clickSave();\n        }\n      }, evt: 'mouseup', key: ['S', true]},\n      {sel: '#tool_export', fn: clickExport, evt: 'mouseup'},\n      {sel: '#tool_open', fn: clickOpen, evt: 'mouseup', key: ['O', true]},\n      {sel: '#tool_import', fn: clickImport, evt: 'mouseup'},\n      {sel: '#tool_source', fn: showSourceEditor, evt: 'click', key: ['U', true]},\n      {sel: '#tool_wireframe', fn: clickWireframe, evt: 'click', key: ['F', true]},\n      {\n        key: ['esc', false, false],\n        fn () {\n          if (dialogSelectors.every((sel) => {\n            return $(sel + ':hidden').length;\n          })) {\n            svgCanvas.clearSelection();\n          }\n        },\n        hidekey: true\n      },\n      {sel: dialogSelectors.join(','), fn: cancelOverlays, evt: 'click',\n        key: ['esc', false, false], hidekey: true},\n      {sel: '#tool_source_save', fn: saveSourceEditor, evt: 'click'},\n      {sel: '#tool_docprops_save', fn: saveDocProperties, evt: 'click'},\n      {sel: '#tool_docprops', fn: showDocProperties, evt: 'mouseup'},\n      {sel: '#tool_prefs_save', fn: savePreferences, evt: 'click'},\n      {sel: '#tool_prefs_option', fn () { showPreferences(); return false; }, evt: 'mouseup'},\n      {sel: '#tool_delete,#tool_delete_multi', fn: deleteSelected,\n        evt: 'click', key: ['del/backspace', true]},\n      {sel: '#tool_reorient', fn: reorientPath, evt: 'click'},\n      {sel: '#tool_node_link', fn: linkControlPoints, evt: 'click'},\n      {sel: '#tool_node_clone', fn: clonePathNode, evt: 'click'},\n      {sel: '#tool_node_delete', fn: deletePathNode, evt: 'click'},\n      {sel: '#tool_openclose_path', fn: opencloseSubPath, evt: 'click'},\n      {sel: '#tool_add_subpath', fn: addSubPath, evt: 'click'},\n      {sel: '#tool_move_top', fn: moveToTopSelected, evt: 'click', key: 'ctrl+shift+]'},\n      {sel: '#tool_move_bottom', fn: moveToBottomSelected, evt: 'click', key: 'ctrl+shift+['},\n      {sel: '#tool_topath', fn: convertToPath, evt: 'click'},\n      {sel: '#tool_make_link,#tool_make_link_multi', fn: makeHyperlink, evt: 'click'},\n      {sel: '#tool_undo', fn: clickUndo, evt: 'click'},\n      {sel: '#tool_redo', fn: clickRedo, evt: 'click'},\n      {sel: '#tool_clone,#tool_clone_multi', fn: clickClone, evt: 'click', key: ['D', true]},\n      {sel: '#tool_group_elements', fn: clickGroup, evt: 'click', key: ['G', true]},\n      {sel: '#tool_ungroup', fn: clickGroup, evt: 'click'},\n      {sel: '#tool_unlink_use', fn: clickGroup, evt: 'click'},\n      {sel: '[id^=tool_align]', fn: clickAlign, evt: 'click'},\n      // these two lines are required to make Opera work properly with the flyout mechanism\n      // {sel: '#tools_rect_show', fn: clickRect, evt: 'click'},\n      // {sel: '#tools_ellipse_show', fn: clickEllipse, evt: 'click'},\n      {sel: '#tool_bold', fn: clickBold, evt: 'mousedown'},\n      {sel: '#tool_italic', fn: clickItalic, evt: 'mousedown'},\n      {sel: '#sidepanel_handle', fn: toggleSidePanel, key: ['X']},\n      {sel: '#copy_save_done', fn: cancelOverlays, evt: 'click'},\n\n      // Shortcuts not associated with buttons\n\n      {key: 'ctrl+left', fn () { rotateSelected(0, 1); }},\n      {key: 'ctrl+right', fn () { rotateSelected(1, 1); }},\n      {key: 'ctrl+shift+left', fn () { rotateSelected(0, 5); }},\n      {key: 'ctrl+shift+right', fn () { rotateSelected(1, 5); }},\n      {key: 'shift+O', fn: selectPrev},\n      {key: 'shift+P', fn: selectNext},\n      {key: [modKey + 'up', true], fn () { zoomImage(2); }},\n      {key: [modKey + 'down', true], fn () { zoomImage(0.5); }},\n      {key: [modKey + ']', true], fn () { moveUpDownSelected('Up'); }},\n      {key: [modKey + '[', true], fn () { moveUpDownSelected('Down'); }},\n      {key: ['up', true], fn () { moveSelected(0, -1); }},\n      {key: ['down', true], fn () { moveSelected(0, 1); }},\n      {key: ['left', true], fn () { moveSelected(-1, 0); }},\n      {key: ['right', true], fn () { moveSelected(1, 0); }},\n      {key: 'shift+up', fn () { moveSelected(0, -10); }},\n      {key: 'shift+down', fn () { moveSelected(0, 10); }},\n      {key: 'shift+left', fn () { moveSelected(-10, 0); }},\n      {key: 'shift+right', fn () { moveSelected(10, 0); }},\n      {key: ['alt+up', true], fn () { svgCanvas.cloneSelectedElements(0, -1); }},\n      {key: ['alt+down', true], fn () { svgCanvas.cloneSelectedElements(0, 1); }},\n      {key: ['alt+left', true], fn () { svgCanvas.cloneSelectedElements(-1, 0); }},\n      {key: ['alt+right', true], fn () { svgCanvas.cloneSelectedElements(1, 0); }},\n      {key: ['alt+shift+up', true], fn () { svgCanvas.cloneSelectedElements(0, -10); }},\n      {key: ['alt+shift+down', true], fn () { svgCanvas.cloneSelectedElements(0, 10); }},\n      {key: ['alt+shift+left', true], fn () { svgCanvas.cloneSelectedElements(-10, 0); }},\n      {key: ['alt+shift+right', true], fn () { svgCanvas.cloneSelectedElements(10, 0); }},\n      {key: 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n      {key: modKey + 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n\n      // Standard shortcuts\n      {key: modKey + 'z', fn: clickUndo},\n      {key: modKey + 'shift+z', fn: clickRedo},\n      {key: modKey + 'y', fn: clickRedo},\n\n      {key: modKey + 'x', fn: cutSelected},\n      {key: modKey + 'c', fn: copySelected},\n      {key: modKey + 'v', fn: pasteInCenter}\n    ];\n\n    // Tooltips not directly associated with a single function\n    const keyAssocs = {\n      '4/Shift+4': '#tools_rect_show',\n      '5/Shift+5': '#tools_ellipse_show'\n    };\n\n    return { /** @lends module:SVGEditor~Actions */\n      /**\n       * @returns {undefined}\n       */\n      setAll () {\n        const flyouts = {};\n\n        $.each(toolButtons, function (i, opts) {\n          // Bind function to button\n          let btn;\n          if (opts.sel) {\n            btn = $(opts.sel);\n            if (!btn.length) { return true; } // Skip if markup does not exist\n            if (opts.evt) {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map tool button click events as well\n              if (isTouch() && opts.evt === 'click') {\n                opts.evt = 'mousedown';\n              }\n              btn[opts.evt](opts.fn);\n            }\n\n            // Add to parent flyout menu, if able to be displayed\n            if (opts.parent && $(opts.parent + '_show').length) {\n              let fH = $(opts.parent);\n              if (!fH.length) {\n                fH = makeFlyoutHolder(opts.parent.substr(1));\n              }\n              if (opts.prepend) {\n                btn[0].style.margin = 'initial';\n              }\n              fH[opts.prepend ? 'prepend' : 'append'](btn);\n\n              if (!Array.isArray(flyouts[opts.parent])) {\n                flyouts[opts.parent] = [];\n              }\n              flyouts[opts.parent].push(opts);\n            }\n          }\n\n          // Bind function to shortcut key\n          if (opts.key) {\n            // Set shortcut based on options\n            let keyval,\n              // disInInp = true,\n              pd = false;\n            if (Array.isArray(opts.key)) {\n              keyval = opts.key[0];\n              if (opts.key.length > 1) { pd = opts.key[1]; }\n              // if (opts.key.length > 2) { disInInp = opts.key[2]; }\n            } else {\n              keyval = opts.key;\n            }\n            keyval += '';\n\n            const {fn} = opts;\n            $.each(keyval.split('/'), function (i, key) {\n              $(document).bind('keydown', key, function (e) {\n                fn();\n                if (pd) {\n                  e.preventDefault();\n                }\n                // Prevent default on ALL keys?\n                return false;\n              });\n            });\n\n            // Put shortcut in title\n            if (opts.sel && !opts.hidekey && btn.attr('title')) {\n              const newTitle = btn.attr('title').split('[')[0] + ' (' + keyval + ')';\n              keyAssocs[keyval] = opts.sel;\n              // Disregard for menu items\n              if (!btn.parents('#main_menu').length) {\n                btn.attr('title', newTitle);\n              }\n            }\n          }\n        });\n\n        // Setup flyouts\n        setupFlyouts(flyouts);\n\n        // Misc additional actions\n\n        // Make 'return' keypress trigger the change event\n        $('.attr_changer, #image_url').bind('keydown', 'return',\n          function (evt) {\n            $(this).change();\n            evt.preventDefault();\n          }\n        );\n\n        $(window).bind('keydown', 'tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectNext();\n          }\n        }).bind('keydown', 'shift+tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectPrev();\n          }\n        });\n\n        $('#tool_zoom').dblclick(dblclickZoom);\n      },\n      /**\n       * @returns {undefined}\n       */\n      setTitles () {\n        $.each(keyAssocs, function (keyval, sel) {\n          const menu = ($(sel).parents('#main_menu').length);\n\n          $(sel).each(function () {\n            let t;\n            if (menu) {\n              t = $(this).text().split(' [')[0];\n            } else {\n              t = this.title.split(' [')[0];\n            }\n            let keyStr = '';\n            // Shift+Up\n            $.each(keyval.split('/'), function (i, key) {\n              const modBits = key.split('+');\n              let mod = '';\n              if (modBits.length > 1) {\n                mod = modBits[0] + '+';\n                key = modBits[1];\n              }\n              keyStr += (i ? '/' : '') + mod + (uiStrings['key_' + key] || key);\n            });\n            if (menu) {\n              this.lastChild.textContent = t + ' [' + keyStr + ']';\n            } else {\n              this.title = t + ' [' + keyStr + ']';\n            }\n          });\n        });\n      },\n      /**\n       * @param {string} sel Selector to match\n       * @returns {module:SVGEditor.ToolButton}\n       */\n      getButtonData (sel) {\n        return Object.values(toolButtons).find((btn) => {\n          return btn.sel === sel;\n        });\n      }\n    };\n  }());\n\n  // Select given tool\n  editor.ready(function () {\n    let tool;\n    const itool = curConfig.initTool,\n      container = $('#tools_left, #svg_editor .tools_flyout'),\n      preTool = container.find('#tool_' + itool),\n      regTool = container.find('#' + itool);\n    if (preTool.length) {\n      tool = preTool;\n    } else if (regTool.length) {\n      tool = regTool;\n    } else {\n      tool = $('#tool_select');\n    }\n    tool.click().mouseup();\n\n    if (curConfig.wireframe) {\n      $('#tool_wireframe').click();\n    }\n\n    if (curConfig.showlayers) {\n      toggleSidePanel();\n    }\n\n    $('#rulers').toggle(!!curConfig.showRulers);\n\n    if (curConfig.showRulers) {\n      $('#show_rulers')[0].checked = true;\n    }\n\n    if (curConfig.baseUnit) {\n      $('#base_unit').val(curConfig.baseUnit);\n    }\n\n    if (curConfig.gridSnapping) {\n      $('#grid_snapping_on')[0].checked = true;\n    }\n\n    if (curConfig.snappingStep) {\n      $('#grid_snapping_step').val(curConfig.snappingStep);\n    }\n\n    if (curConfig.gridColor) {\n      $('#grid_color').val(curConfig.gridColor);\n    }\n  });\n\n  // init SpinButtons\n  $('#rect_rx').SpinButton({\n    min: 0, max: 1000, stateObj, callback: changeRectRadius\n  });\n  $('#stroke_width').SpinButton({\n    min: 0, max: 99, smallStep: 0.1, stateObj, callback: changeStrokeWidth\n  });\n  $('#angle').SpinButton({\n    min: -180, max: 180, step: 5, stateObj, callback: changeRotationAngle\n  });\n  $('#font_size').SpinButton({\n    min: 0.001, stepfunc: stepFontSize, stateObj, callback: changeFontSize\n  });\n  $('#group_opacity').SpinButton({\n    min: 0, max: 100, step: 5, stateObj, callback: changeOpacity\n  });\n  $('#blur').SpinButton({\n    min: 0, max: 10, step: 0.1, stateObj, callback: changeBlur\n  });\n  $('#zoom').SpinButton({\n    min: 0.001, max: 10000, step: 50, stepfunc: stepZoom,\n    stateObj, callback: changeZoom\n  // Set default zoom\n  }).val(\n    svgCanvas.getZoom() * 100\n  );\n\n  $('#workarea').contextMenu(\n    {\n      menu: 'cmenu_canvas',\n      inSpeed: 0\n    },\n    function (action, el, pos) {\n      switch (action) {\n      case 'delete':\n        deleteSelected();\n        break;\n      case 'cut':\n        cutSelected();\n        break;\n      case 'copy':\n        copySelected();\n        break;\n      case 'paste':\n        svgCanvas.pasteElements();\n        break;\n      case 'paste_in_place':\n        svgCanvas.pasteElements('in_place');\n        break;\n      case 'group':\n      case 'group_elements':\n        svgCanvas.groupSelectedElements();\n        break;\n      case 'ungroup':\n        svgCanvas.ungroupSelectedElement();\n        break;\n      case 'move_front':\n        moveToTopSelected();\n        break;\n      case 'move_up':\n        moveUpDownSelected('Up');\n        break;\n      case 'move_down':\n        moveUpDownSelected('Down');\n        break;\n      case 'move_back':\n        moveToBottomSelected();\n        break;\n      default:\n        if (hasCustomHandler(action)) {\n          getCustomHandler(action).call();\n        }\n        break;\n      }\n    }\n  );\n\n  const lmenuFunc = function (action, el, pos) {\n    switch (action) {\n    case 'dupe':\n      cloneLayer();\n      break;\n    case 'delete':\n      deleteLayer();\n      break;\n    case 'merge_down':\n      mergeLayer();\n      break;\n    case 'merge_all':\n      svgCanvas.mergeAllLayers();\n      updateContextPanel();\n      populateLayers();\n      break;\n    }\n  };\n\n  $('#layerlist').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0\n    },\n    lmenuFunc\n  );\n\n  $('#layer_moreopts').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0,\n      allowLeft: true\n    },\n    lmenuFunc\n  );\n\n  $('.contextMenu li').mousedown(function (ev) {\n    ev.preventDefault();\n  });\n\n  $('#cmenu_canvas li').disableContextMenu();\n  canvMenu.enableContextMenuItems('#delete,#cut,#copy');\n\n  function enableOrDisableClipboard () {\n    let svgeditClipboard;\n    try {\n      svgeditClipboard = localStorage.getItem('svgedit_clipboard');\n    } catch (err) {}\n    canvMenu[(svgeditClipboard ? 'en' : 'dis') + 'ableContextMenuItems'](\n      '#paste,#paste_in_place'\n    );\n  }\n  enableOrDisableClipboard();\n\n  window.addEventListener('storage', function (e) {\n    if (e.key !== 'svgedit_clipboard') { return; }\n\n    enableOrDisableClipboard();\n  });\n\n  window.addEventListener('beforeunload', function (e) {\n    // Suppress warning if page is empty\n    if (undoMgr.getUndoStackSize() === 0) {\n      editor.showSaveWarning = false;\n    }\n\n    // showSaveWarning is set to 'false' when the page is saved.\n    if (!curConfig.no_save_warning && editor.showSaveWarning) {\n      // Browser already asks question about closing the page\n      e.returnValue = uiStrings.notification.unsavedChanges; // Firefox needs this when beforeunload set by addEventListener (even though message is not used)\n      return uiStrings.notification.unsavedChanges;\n    }\n  });\n\n  /**\n  * Expose the `uiStrings`.\n  * @function module:SVGEditor.canvas.getUIStrings\n  * @returns {module:SVGEditor.uiStrings}\n  */\n  editor.canvas.getUIStrings = function () {\n    return uiStrings;\n  };\n\n  /**\n  * @callback module:SVGEditor.OpenPrepCallback\n  * @param {boolean} noChanges\n  * @returns {undefined}\n  */\n  /**\n  * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback\n  * @returns {undefined}\n  */\n  editor.openPrep = function (func) {\n    $('#main_menu').hide();\n    if (undoMgr.getUndoStackSize() === 0) {\n      func(true);\n    } else {\n      $.confirm(uiStrings.notification.QwantToOpen, func);\n    }\n  };\n\n  function onDragEnter (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // and indicator should be displayed here, such as \"drop files here\"\n  }\n\n  function onDragOver (e) {\n    e.stopPropagation();\n    e.preventDefault();\n  }\n\n  function onDragLeave (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // hypothetical indicator should be removed here\n  }\n  // Use HTML5 File API: http://www.w3.org/TR/FileAPI/\n  // if browser has HTML5 File API support, then we will show the open menu item\n  // and provide a file input to click. When that change event fires, it will\n  // get the text contents of the file and send it to the canvas\n  if (window.FileReader) {\n    const importImage = function (e) {\n      $.process_cancel(uiStrings.notification.loadingImage);\n      e.stopPropagation();\n      e.preventDefault();\n      $('#workarea').removeAttr('style');\n      $('#main_menu').hide();\n      const file = (e.type === 'drop') ? e.dataTransfer.files[0] : this.files[0];\n      if (!file) {\n        $('#dialog_box').hide();\n        return;\n      }\n      /* if (file.type === 'application/pdf') { // Todo: Handle PDF imports\n\n      }\n      else */\n      if (file.type.includes('image')) {\n        // Detected an image\n        // svg handling\n        let reader;\n        if (file.type.includes('svg')) {\n          reader = new FileReader();\n          reader.onloadend = function (e) {\n            const newElement = svgCanvas.importSvgString(e.target.result, true);\n            svgCanvas.ungroupSelectedElement();\n            svgCanvas.ungroupSelectedElement();\n            svgCanvas.groupSelectedElements();\n            svgCanvas.alignSelectedElements('m', 'page');\n            svgCanvas.alignSelectedElements('c', 'page');\n            // highlight imported element, otherwise we get strange empty selectbox\n            svgCanvas.selectOnly([newElement]);\n            $('#dialog_box').hide();\n          };\n          reader.readAsText(file);\n        } else {\n          // bitmap handling\n          reader = new FileReader();\n          reader.onloadend = function ({target: {result}}) {\n            // let's insert the new image until we know its dimensions\n            const insertNewImage = function (width, height) {\n              const newImage = svgCanvas.addSVGElementFromJson({\n                element: 'image',\n                attr: {\n                  x: 0,\n                  y: 0,\n                  width,\n                  height,\n                  id: svgCanvas.getNextId(),\n                  style: 'pointer-events:inherit'\n                }\n              });\n              svgCanvas.setHref(newImage, result);\n              svgCanvas.selectOnly([newImage]);\n              svgCanvas.alignSelectedElements('m', 'page');\n              svgCanvas.alignSelectedElements('c', 'page');\n              updateContextPanel();\n              $('#dialog_box').hide();\n            };\n            // create dummy img so we know the default dimensions\n            let imgWidth = 100;\n            let imgHeight = 100;\n            const img = new Image();\n            img.style.opacity = 0;\n            img.onload = function () {\n              imgWidth = img.offsetWidth || img.naturalWidth || img.width;\n              imgHeight = img.offsetHeight || img.naturalHeight || img.height;\n              insertNewImage(imgWidth, imgHeight);\n            };\n            img.src = result;\n          };\n          reader.readAsDataURL(file);\n        }\n      }\n    };\n\n    workarea[0].addEventListener('dragenter', onDragEnter);\n    workarea[0].addEventListener('dragover', onDragOver);\n    workarea[0].addEventListener('dragleave', onDragLeave);\n    workarea[0].addEventListener('drop', importImage);\n\n    const open = $('<input type=\"file\">').click(function () {\n      const f = this;\n      editor.openPrep(function (ok) {\n        if (!ok) { return; }\n        svgCanvas.clear();\n        if (f.files.length === 1) {\n          $.process_cancel(uiStrings.notification.loadingImage);\n          const reader = new FileReader();\n          reader.onloadend = function (e) {\n            loadSvgString(e.target.result);\n            updateCanvas();\n          };\n          reader.readAsText(f.files[0]);\n        }\n      });\n    });\n    $('#tool_open').show().prepend(open);\n\n    const imgImport = $('<input type=\"file\">').change(importImage);\n    $('#tool_import').show().prepend(imgImport);\n  }\n\n  updateCanvas(true);\n  //  const revnums = 'svg-editor.js ($Rev$) ';\n  //  revnums += svgCanvas.getVersion();\n  //  $('#copyright')[0].setAttribute('title', revnums);\n\n  const loadedExtensionNames = [];\n  /**\n  * @function module:SVGEditor.setLang\n  * @param {string} lang The language code\n  * @param {module:locale.LocaleStrings} allStrings See {@tutorial LocaleDocs}\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n  * @returns {Promise} A Promise which resolves to `undefined`\n  */\n  const setLang = editor.setLang = async function (lang, allStrings) {\n    editor.langChanged = true;\n    $.pref('lang', lang);\n    $('#lang_select').val(lang);\n    if (!allStrings) {\n      return;\n    }\n    $.extend(uiStrings, allStrings);\n\n    // const notif = allStrings.notification; // Currently unused\n    // $.extend will only replace the given strings\n    const oldLayerName = $('#layerlist tr.layersel td.layername').text();\n    const renameLayer = (oldLayerName === uiStrings.common.layer + ' 1');\n\n    svgCanvas.setUiStrings(allStrings);\n    Actions.setTitles();\n\n    if (renameLayer) {\n      svgCanvas.renameCurrentLayer(uiStrings.common.layer + ' 1');\n      populateLayers();\n    }\n\n    // In case extensions loaded before the locale, now we execute a callback on them\n    if (extsPreLang.length) {\n      while (extsPreLang.length) {\n        const ext = extsPreLang.shift();\n        loadedExtensionNames.push(ext.name);\n        await ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n      }\n    } else {\n      loadedExtensionNames.forEach((loadedExtensionName) => {\n        svgCanvas.runExtensions('langReady', /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */ {\n          lang, uiStrings, importLocale: getImportLocale({defaultLang: lang, defaultName: loadedExtensionName})\n        });\n      });\n    }\n    svgCanvas.runExtensions('langChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */ lang);\n\n    // Update flyout tooltips\n    setFlyoutTitles();\n\n    // Copy title for certain tool elements\n    const elems = {\n      '#stroke_color': '#tool_stroke .icon_label, #tool_stroke .color_block',\n      '#fill_color': '#tool_fill label, #tool_fill .color_block',\n      '#linejoin_miter': '#cur_linejoin',\n      '#linecap_butt': '#cur_linecap'\n    };\n\n    $.each(elems, function (source, dest) {\n      $(dest).attr('title', $(source)[0].title);\n    });\n\n    // Copy alignment titles\n    $('#multiselected_panel div[id^=tool_align]').each(function () {\n      $('#tool_pos' + this.id.substr(10))[0].title = this.title;\n    });\n  };\n  localeInit(\n    /**\n    * @implements {module:locale.LocaleEditorInit}\n    */\n    {\n      /**\n      * Gets an array of results from extensions with a `addLangData` method,\n      * returning an object with a `data` property set to its locales (to be\n      * merged with regular locales).\n      * @param {string} langParam\n      * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n      * @todo Can we forego this in favor of `langReady` (or forego `langReady`)?\n      * @returns {module:locale.AddLangExtensionLocaleData[]}\n      */\n      addLangData (langParam) {\n        return svgCanvas.runExtensions(\n          'addLangData',\n          /**\n           * @function\n           * @type {module:svgcanvas.ExtensionVarBuilder}\n           * @param {string} name\n           * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}\n           */\n          (name) => { // We pass in a function as we don't know the extension name here when defining this `addLangData` method\n            return {\n              lang: langParam,\n              importLocale: getImportLocale({defaultLang: langParam, defaultName: name})\n            };\n          },\n          true\n        );\n      },\n      curConfig\n    }\n  );\n  // Load extensions\n  // Bit of a hack to run extensions in local Opera/IE9\n  if (document.location.protocol === 'file:') {\n    setTimeout(extAndLocaleFunc, 100);\n  } else {\n    // Returns a promise (if we wanted to fire 'extensions-loaded' event, potentially useful to hide interface as some extension locales are only available after this)\n    extAndLocaleFunc();\n  }\n};\n\n/**\n* @callback module:SVGEditor.ReadyCallback\n* @returns {undefined}\n*/\n/**\n* Queues a callback to be invoked when the editor is ready (or\n*   to be invoked immediately if it is already ready--i.e.,\n*   if `svgEditor.runCallbacks` has been run).\n* @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke\n* @returns {undefined}\n*/\neditor.ready = function (cb) {\n  if (!isReady) {\n    callbacks.push(cb);\n  } else {\n    cb();\n  }\n};\n\n/**\n* Invokes the callbacks previous set by `svgEditor.ready`\n* @returns {undefined}\n*/\neditor.runCallbacks = function () {\n  callbacks.forEach((cb) => {\n    cb();\n  });\n  isReady = true;\n};\n\n/**\n* @param {string} str The SVG string to load\n* @returns {undefined}\n*/\neditor.loadFromString = function (str) {\n  editor.ready(function () {\n    loadSvgString(str);\n  });\n};\n\n/**\n* Not presently in use.\n* @param {PlainObject} featList\n* @returns {undefined}\n*/\neditor.disableUI = function (featList) {\n  // $(function () {\n  //   $('#tool_wireframe, #tool_image, #main_button, #tool_source, #sidepanels').remove();\n  //   $('#tools_top').css('left', 5);\n  // });\n};\n\n/**\n * @callback module:SVGEditor.URLLoadCallback\n * @param {boolean} success\n * @returns {undefined}\n */\n/**\n* @param {string} url URL from which to load an SVG string via Ajax\n* @param {PlainObject} [opts] May contain properties: `cache`, `callback`\n* @param {boolean} opts.cache\n* @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success\n* @returns {undefined}\n*/\neditor.loadFromURL = function (url, opts) {\n  if (!opts) { opts = {}; }\n\n  const {cache, callback: cb} = opts;\n\n  editor.ready(function () {\n    $.ajax({\n      url,\n      dataType: 'text',\n      cache: !!cache,\n      beforeSend () {\n        $.process_cancel(uiStrings.notification.loadingImage);\n      },\n      success (str) {\n        loadSvgString(str, cb);\n      },\n      error (xhr, stat, err) {\n        if (xhr.status !== 404 && xhr.responseText) {\n          loadSvgString(xhr.responseText, cb);\n        } else {\n          $.alert(uiStrings.notification.URLloadFail + ': \\n' + err, cb);\n        }\n      },\n      complete () {\n        $('#dialog_box').hide();\n      }\n    });\n  });\n};\n\n/**\n* @param {string} str The Data URI to base64-decode (if relevant) and load\n* @returns {undefined}\n*/\neditor.loadFromDataURI = function (str) {\n  editor.ready(function () {\n    let base64 = false;\n    let pre = str.match(/^data:image\\/svg\\+xml;base64,/);\n    if (pre) {\n      base64 = true;\n    } else {\n      pre = str.match(/^data:image\\/svg\\+xml(?:;(?:utf8)?)?,/);\n    }\n    if (pre) {\n      pre = pre[0];\n    }\n    const src = str.slice(pre.length);\n    loadSvgString(base64 ? Utils.decode64(src) : decodeURIComponent(src));\n  });\n};\n\n/**\n * @param {string} name Used internally; no need for i18n.\n * @param {module:svgcanvas.ExtensionInitCallback} init Config to be invoked on this module\n * @param {module:SVGEditor~ImportLocale} importLocale Importer defaulting to pth with current extension name and locale\n * @throws {Error} If called too early\n * @returns {Promise} Resolves to `undefined`\n*/\neditor.addExtension = function (name, init, importLocale) {\n  // Note that we don't want this on editor.ready since some extensions\n  // may want to run before then (like server_opensave).\n  // $(function () {\n  if (!svgCanvas) {\n    throw new Error('Extension added too early');\n  }\n  return svgCanvas.addExtension.call(this, name, init, importLocale);\n  // });\n};\n\n// Defer injection to wait out initial menu processing. 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break;\n  case 'touchmove': type = 'mousemove'; break;\n  case 'touchend': type = 'mouseup'; break;\n  default: return;\n  }\n\n  const {screenX, screenY, clientX, clientY} = first; // eslint-disable-line no-shadow\n  const simulatedEvent = new MouseEvent(type, {\n    // Event interface\n    bubbles: true,\n    cancelable: true,\n    // UIEvent interface\n    view: window,\n    detail: 1, // click count\n    // MouseEvent interface (customized)\n    screenX, screenY, clientX, clientY,\n    // MouseEvent interface (defaults) - these could be removed\n    ctrlKey: false,\n    altKey: false,\n    shiftKey: false,\n    metaKey: false,\n    button: 0, // main button (usually left)\n    relatedTarget: null\n  });\n  if (changedTouches.length < 2) {\n    first.target.dispatchEvent(simulatedEvent);\n    ev.preventDefault();\n  }\n}\n\ndocument.addEventListener('touchstart', touchHandler, true);\ndocument.addEventListener('touchmove', touchHandler, true);\ndocument.addEventListener('touchend', touchHandler, true);\ndocument.addEventListener('touchcancel', touchHandler, true);\n","/**\n * Namespaces or tools therefor\n * @module namespaces\n * @license MIT\n*/\n\n/**\n* Common namepaces constants in alpha order\n* @enum {string}\n* @type {PlainObject}\n* @memberof module:namespaces\n*/\nexport const NS = {\n  HTML: 'http://www.w3.org/1999/xhtml',\n  MATH: 'http://www.w3.org/1998/Math/MathML',\n  SE: 'http://svg-edit.googlecode.com',\n  SVG: 'http://www.w3.org/2000/svg',\n  XLINK: 'http://www.w3.org/1999/xlink',\n  XML: 'http://www.w3.org/XML/1998/namespace',\n  XMLNS: 'http://www.w3.org/2000/xmlns/' // see http://www.w3.org/TR/REC-xml-names/#xmlReserved\n};\n\n/**\n* @function module:namespaces.getReverseNS\n* @returns {string} The NS with key values switched and lowercase\n*/\nexport const getReverseNS = function () {\n  const reverseNS = {};\n  Object.entries(NS).forEach(([name, URI]) => {\n    reverseNS[URI] = name.toLowerCase();\n  });\n  return reverseNS;\n};\n","/* globals SVGPathSeg, SVGPathSegMovetoRel, SVGPathSegMovetoAbs,\n    SVGPathSegMovetoRel, SVGPathSegLinetoRel, SVGPathSegLinetoAbs,\n    SVGPathSegLinetoHorizontalRel, SVGPathSegLinetoHorizontalAbs,\n    SVGPathSegLinetoVerticalRel, SVGPathSegLinetoVerticalAbs,\n    SVGPathSegClosePath, SVGPathSegCurvetoCubicRel,\n    SVGPathSegCurvetoCubicAbs, SVGPathSegCurvetoCubicSmoothRel,\n    SVGPathSegCurvetoCubicSmoothAbs, SVGPathSegCurvetoQuadraticRel,\n    SVGPathSegCurvetoQuadraticAbs, SVGPathSegCurvetoQuadraticSmoothRel,\n    SVGPathSegCurvetoQuadraticSmoothAbs, SVGPathSegArcRel, SVGPathSegArcAbs */\n/**\n* SVGPathSeg API polyfill\n* https://github.com/progers/pathseg\n*\n* This is a drop-in replacement for the `SVGPathSeg` and `SVGPathSegList` APIs\n* that were removed from SVG2 ({@link https://lists.w3.org/Archives/Public/www-svg/2015Jun/0044.html}),\n* including the latest spec changes which were implemented in Firefox 43 and\n* Chrome 46.\n*/\n/* eslint-disable no-shadow, class-methods-use-this */\n// Linting: We avoid `no-shadow` as ESLint thinks these are still available globals\n// Linting: We avoid `class-methods-use-this` as this is a polyfill that must\n//   follow the conventions\n(() => {\nif (!('SVGPathSeg' in window)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg\n  class SVGPathSeg {\n    constructor (type, typeAsLetter, owningPathSegList) {\n      this.pathSegType = type;\n      this.pathSegTypeAsLetter = typeAsLetter;\n      this._owningPathSegList = owningPathSegList;\n    }\n    // Notify owning PathSegList on any changes so they can be synchronized back to the path element.\n    _segmentChanged () {\n      if (this._owningPathSegList) {\n        this._owningPathSegList.segmentChanged(this);\n      }\n    }\n  }\n  SVGPathSeg.prototype.classname = 'SVGPathSeg';\n\n  SVGPathSeg.PATHSEG_UNKNOWN = 0;\n  SVGPathSeg.PATHSEG_CLOSEPATH = 1;\n  SVGPathSeg.PATHSEG_MOVETO_ABS = 2;\n  SVGPathSeg.PATHSEG_MOVETO_REL = 3;\n  SVGPathSeg.PATHSEG_LINETO_ABS = 4;\n  SVGPathSeg.PATHSEG_LINETO_REL = 5;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS = 6;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL = 7;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS = 8;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL = 9;\n  SVGPathSeg.PATHSEG_ARC_ABS = 10;\n  SVGPathSeg.PATHSEG_ARC_REL = 11;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS = 12;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL = 13;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS = 14;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL = 15;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;\n\n  class SVGPathSegClosePath extends SVGPathSeg {\n    constructor (owningPathSegList) {\n      super(SVGPathSeg.PATHSEG_CLOSEPATH, 'z', owningPathSegList);\n    }\n    toString () { return '[object SVGPathSegClosePath]'; }\n    _asPathString () { return this.pathSegTypeAsLetter; }\n    clone () { return new SVGPathSegClosePath(undefined); }\n  }\n\n  class SVGPathSegMovetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_ABS, 'M', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoAbs.prototype, {\n    x: {\n      get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true\n    },\n    y: {\n      get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true\n    }\n  });\n\n  class SVGPathSegMovetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_REL, 'm', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_ABS, 'L', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_REL, 'l', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS, 'C', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicAbs(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL, 'c', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicRel(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS, 'Q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticAbs(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL, 'q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticRel(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_ABS, 'A', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcAbs(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_REL, 'a', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcRel(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoHorizontalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS, 'H', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalAbs(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalAbs.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoHorizontalRel extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL, 'h', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalRel(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalRel.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS, 'V', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalAbs(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalAbs.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalRel extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL, 'v', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalRel(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalRel.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegCurvetoCubicSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS, 'S', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL, 's', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothRel(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS, 'T', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL, 't', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  // Add createSVGPathSeg* functions to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathElement.\n  SVGPathElement.prototype.createSVGPathSegClosePath = function () { return new SVGPathSegClosePath(undefined); };\n  SVGPathElement.prototype.createSVGPathSegMovetoAbs = function (x, y) { return new SVGPathSegMovetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegMovetoRel = function (x, y) { return new SVGPathSegMovetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoAbs = function (x, y) { return new SVGPathSegLinetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoRel = function (x, y) { return new SVGPathSegLinetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicAbs(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicRel(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticAbs(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticRel(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegArcAbs = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcAbs(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegArcRel = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcRel(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs = function (x) { return new SVGPathSegLinetoHorizontalAbs(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel = function (x) { return new SVGPathSegLinetoHorizontalRel(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs = function (y) { return new SVGPathSegLinetoVerticalAbs(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel = function (y) { return new SVGPathSegLinetoVerticalRel(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothRel(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, x, y); };\n\n  if (!('getPathSegAtLength' in SVGPathElement.prototype)) {\n    // Add getPathSegAtLength to SVGPathElement.\n    // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-__svg__SVGPathElement__getPathSegAtLength\n    // This polyfill requires SVGPathElement.getTotalLength to implement the distance-along-a-path algorithm.\n    SVGPathElement.prototype.getPathSegAtLength = function (distance) {\n      if (distance === undefined || !isFinite(distance)) {\n        throw new Error('Invalid arguments.');\n      }\n\n      const measurementElement = document.createElementNS('http://www.w3.org/2000/svg', 'path');\n      measurementElement.setAttribute('d', this.getAttribute('d'));\n      let lastPathSegment = measurementElement.pathSegList.numberOfItems - 1;\n\n      // If the path is empty, return 0.\n      if (lastPathSegment <= 0) {\n        return 0;\n      }\n\n      do {\n        measurementElement.pathSegList.removeItem(lastPathSegment);\n        if (distance > measurementElement.getTotalLength()) {\n          break;\n        }\n        lastPathSegment--;\n      } while (lastPathSegment > 0);\n      return lastPathSegment;\n    };\n  }\n\n  window.SVGPathSeg = SVGPathSeg;\n  window.SVGPathSegClosePath = SVGPathSegClosePath;\n  window.SVGPathSegMovetoAbs = SVGPathSegMovetoAbs;\n  window.SVGPathSegMovetoRel = SVGPathSegMovetoRel;\n  window.SVGPathSegLinetoAbs = SVGPathSegLinetoAbs;\n  window.SVGPathSegLinetoRel = SVGPathSegLinetoRel;\n  window.SVGPathSegCurvetoCubicAbs = SVGPathSegCurvetoCubicAbs;\n  window.SVGPathSegCurvetoCubicRel = SVGPathSegCurvetoCubicRel;\n  window.SVGPathSegCurvetoQuadraticAbs = SVGPathSegCurvetoQuadraticAbs;\n  window.SVGPathSegCurvetoQuadraticRel = SVGPathSegCurvetoQuadraticRel;\n  window.SVGPathSegArcAbs = SVGPathSegArcAbs;\n  window.SVGPathSegArcRel = SVGPathSegArcRel;\n  window.SVGPathSegLinetoHorizontalAbs = SVGPathSegLinetoHorizontalAbs;\n  window.SVGPathSegLinetoHorizontalRel = SVGPathSegLinetoHorizontalRel;\n  window.SVGPathSegLinetoVerticalAbs = SVGPathSegLinetoVerticalAbs;\n  window.SVGPathSegLinetoVerticalRel = SVGPathSegLinetoVerticalRel;\n  window.SVGPathSegCurvetoCubicSmoothAbs = SVGPathSegCurvetoCubicSmoothAbs;\n  window.SVGPathSegCurvetoCubicSmoothRel = SVGPathSegCurvetoCubicSmoothRel;\n  window.SVGPathSegCurvetoQuadraticSmoothAbs = SVGPathSegCurvetoQuadraticSmoothAbs;\n  window.SVGPathSegCurvetoQuadraticSmoothRel = SVGPathSegCurvetoQuadraticSmoothRel;\n}\n\n// Checking for SVGPathSegList in window checks for the case of an implementation without the\n// SVGPathSegList API.\n// The second check for appendItem is specific to Firefox 59+ which removed only parts of the\n// SVGPathSegList API (e.g., appendItem). In this case we need to re-implement the entire API\n// so the polyfill data (i.e., _list) is used throughout.\nif (!('SVGPathSegList' in window) || !('appendItem' in window.SVGPathSegList.prototype)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSegList\n  class SVGPathSegList {\n    constructor (pathElement) {\n      this._pathElement = pathElement;\n      this._list = this._parsePath(this._pathElement.getAttribute('d'));\n\n      // Use a MutationObserver to catch changes to the path's \"d\" attribute.\n      this._mutationObserverConfig = {attributes: true, attributeFilter: ['d']};\n      this._pathElementMutationObserver = new MutationObserver(this._updateListFromPathMutations.bind(this));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n    // Process any pending mutations to the path element and update the list as needed.\n    // This should be the first call of all public functions and is needed because\n    // MutationObservers are not synchronous so we can have pending asynchronous mutations.\n    _checkPathSynchronizedToList () {\n      this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords());\n    }\n\n    _updateListFromPathMutations (mutationRecords) {\n      if (!this._pathElement) {\n        return;\n      }\n      let hasPathMutations = false;\n      mutationRecords.forEach((record) => {\n        if (record.attributeName === 'd') {\n          hasPathMutations = true;\n        }\n      });\n      if (hasPathMutations) {\n        this._list = this._parsePath(this._pathElement.getAttribute('d'));\n      }\n    }\n\n    // Serialize the list and update the path's 'd' attribute.\n    _writeListToPath () {\n      this._pathElementMutationObserver.disconnect();\n      this._pathElement.setAttribute('d', SVGPathSegList._pathSegArrayAsString(this._list));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n\n    // When a path segment changes the list needs to be synchronized back to the path element.\n    segmentChanged (pathSeg) {\n      this._writeListToPath();\n    }\n\n    clear () {\n      this._checkPathSynchronizedToList();\n\n      this._list.forEach((pathSeg) => {\n        pathSeg._owningPathSegList = null;\n      });\n      this._list = [];\n      this._writeListToPath();\n    }\n\n    initialize (newItem) {\n      this._checkPathSynchronizedToList();\n\n      this._list = [newItem];\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    _checkValidIndex (index) {\n      if (isNaN(index) || index < 0 || index >= this.numberOfItems) {\n        throw new Error('INDEX_SIZE_ERR');\n      }\n    }\n\n    getItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      return this._list[index];\n    }\n\n    insertItemBefore (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      // Spec: If the index is greater than or equal to numberOfItems, then the new item is appended to the end of the list.\n      if (index > this.numberOfItems) {\n        index = this.numberOfItems;\n      }\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.splice(index, 0, newItem);\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    replaceItem (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._checkValidIndex(index);\n      this._list[index] = newItem;\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    removeItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      const item = this._list[index];\n      this._list.splice(index, 1);\n      this._writeListToPath();\n      return item;\n    }\n\n    appendItem (newItem) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.push(newItem);\n      newItem._owningPathSegList = this;\n      // TODO: Optimize this to just append to the existing attribute.\n      this._writeListToPath();\n      return newItem;\n    }\n\n    // This closely follows SVGPathParser::parsePath from Source/core/svg/SVGPathParser.cpp.\n    _parsePath (string) {\n      if (!string || !string.length) {\n        return [];\n      }\n\n      const owningPathSegList = this; // eslint-disable-line consistent-this\n\n      class Builder {\n        constructor () {\n          this.pathSegList = [];\n        }\n        appendSegment (pathSeg) {\n          this.pathSegList.push(pathSeg);\n        }\n      }\n\n      class Source {\n        constructor (string) {\n          this._string = string;\n          this._currentIndex = 0;\n          this._endIndex = this._string.length;\n          this._previousCommand = SVGPathSeg.PATHSEG_UNKNOWN;\n\n          this._skipOptionalSpaces();\n        }\n        _isCurrentSpace () {\n          const character = this._string[this._currentIndex];\n          return character <= ' ' && (character === ' ' || character === '\\n' || character === '\\t' || character === '\\r' || character === '\\f');\n        }\n\n        _skipOptionalSpaces () {\n          while (this._currentIndex < this._endIndex && this._isCurrentSpace()) {\n            this._currentIndex++;\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        _skipOptionalSpacesOrDelimiter () {\n          if (this._currentIndex < this._endIndex && !this._isCurrentSpace() && this._string.charAt(this._currentIndex) !== ',') {\n            return false;\n          }\n          if (this._skipOptionalSpaces()) {\n            if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === ',') {\n              this._currentIndex++;\n              this._skipOptionalSpaces();\n            }\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        hasMoreData () {\n          return this._currentIndex < this._endIndex;\n        }\n\n        peekSegmentType () {\n          const lookahead = this._string[this._currentIndex];\n          return this._pathSegTypeFromChar(lookahead);\n        }\n\n        _pathSegTypeFromChar (lookahead) {\n          switch (lookahead) {\n          case 'Z':\n          case 'z':\n            return SVGPathSeg.PATHSEG_CLOSEPATH;\n          case 'M':\n            return SVGPathSeg.PATHSEG_MOVETO_ABS;\n          case 'm':\n            return SVGPathSeg.PATHSEG_MOVETO_REL;\n          case 'L':\n            return SVGPathSeg.PATHSEG_LINETO_ABS;\n          case 'l':\n            return SVGPathSeg.PATHSEG_LINETO_REL;\n          case 'C':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;\n          case 'c':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;\n          case 'Q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;\n          case 'q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;\n          case 'A':\n            return SVGPathSeg.PATHSEG_ARC_ABS;\n          case 'a':\n            return SVGPathSeg.PATHSEG_ARC_REL;\n          case 'H':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;\n          case 'h':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;\n          case 'V':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;\n          case 'v':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;\n          case 'S':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;\n          case 's':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;\n          case 'T':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;\n          case 't':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;\n          default:\n            return SVGPathSeg.PATHSEG_UNKNOWN;\n          }\n        }\n\n        _nextCommandHelper (lookahead, previousCommand) {\n          // Check for remaining coordinates in the current command.\n          if ((lookahead === '+' || lookahead === '-' || lookahead === '.' || (lookahead >= '0' && lookahead <= '9')) && previousCommand !== SVGPathSeg.PATHSEG_CLOSEPATH) {\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_ABS) {\n              return SVGPathSeg.PATHSEG_LINETO_ABS;\n            }\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_REL) {\n              return SVGPathSeg.PATHSEG_LINETO_REL;\n            }\n            return previousCommand;\n          }\n          return SVGPathSeg.PATHSEG_UNKNOWN;\n        }\n\n        initialCommandIsMoveTo () {\n          // If the path is empty it is still valid, so return true.\n          if (!this.hasMoreData()) {\n            return true;\n          }\n          const command = this.peekSegmentType();\n          // Path must start with moveTo.\n          return command === SVGPathSeg.PATHSEG_MOVETO_ABS || command === SVGPathSeg.PATHSEG_MOVETO_REL;\n        }\n\n        // Parse a number from an SVG path. This very closely follows genericParseNumber(...) from Source/core/svg/SVGParserUtilities.cpp.\n        // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-PathDataBNF\n        _parseNumber () {\n          let exponent = 0;\n          let integer = 0;\n          let frac = 1;\n          let decimal = 0;\n          let sign = 1;\n          let expsign = 1;\n\n          const startIndex = this._currentIndex;\n\n          this._skipOptionalSpaces();\n\n          // Read the sign.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '+') {\n            this._currentIndex++;\n          } else if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '-') {\n            this._currentIndex++;\n            sign = -1;\n          }\n\n          if (this._currentIndex === this._endIndex || ((this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') && this._string.charAt(this._currentIndex) !== '.')) {\n            // The first character of a number must be one of [0-9+-.].\n            return undefined;\n          }\n\n          // Read the integer part, build right-to-left.\n          const startIntPartIndex = this._currentIndex;\n          while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n            this._currentIndex++; // Advance to first non-digit.\n          }\n\n          if (this._currentIndex !== startIntPartIndex) {\n            let scanIntPartIndex = this._currentIndex - 1;\n            let multiplier = 1;\n            while (scanIntPartIndex >= startIntPartIndex) {\n              integer += multiplier * (this._string.charAt(scanIntPartIndex--) - '0');\n              multiplier *= 10;\n            }\n          }\n\n          // Read the decimals.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '.') {\n            this._currentIndex++;\n\n            // There must be a least one digit following the .\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              frac *= 10;\n              decimal += (this._string.charAt(this._currentIndex) - '0') / frac;\n              this._currentIndex += 1;\n            }\n          }\n\n          // Read the exponent part.\n          if (this._currentIndex !== startIndex && this._currentIndex + 1 < this._endIndex && (this._string.charAt(this._currentIndex) === 'e' || this._string.charAt(this._currentIndex) === 'E') && (this._string.charAt(this._currentIndex + 1) !== 'x' && this._string.charAt(this._currentIndex + 1) !== 'm')) {\n            this._currentIndex++;\n\n            // Read the sign of the exponent.\n            if (this._string.charAt(this._currentIndex) === '+') {\n              this._currentIndex++;\n            } else if (this._string.charAt(this._currentIndex) === '-') {\n              this._currentIndex++;\n              expsign = -1;\n            }\n\n            // There must be an exponent.\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              exponent *= 10;\n              exponent += (this._string.charAt(this._currentIndex) - '0');\n              this._currentIndex++;\n            }\n          }\n\n          let number = integer + decimal;\n          number *= sign;\n\n          if (exponent) {\n            number *= Math.pow(10, expsign * exponent);\n          }\n\n          if (startIndex === this._currentIndex) {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n\n          return number;\n        }\n\n        _parseArcFlag () {\n          if (this._currentIndex >= this._endIndex) {\n            return undefined;\n          }\n          let flag = false;\n          const flagChar = this._string.charAt(this._currentIndex++);\n          if (flagChar === '0') {\n            flag = false;\n          } else if (flagChar === '1') {\n            flag = true;\n          } else {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n          return flag;\n        }\n\n        parseSegment () {\n          const lookahead = this._string[this._currentIndex];\n          let command = this._pathSegTypeFromChar(lookahead);\n          if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n            // Possibly an implicit command. Not allowed if this is the first command.\n            if (this._previousCommand === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n            command = this._nextCommandHelper(lookahead, this._previousCommand);\n            if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n          } else {\n            this._currentIndex++;\n          }\n\n          this._previousCommand = command;\n\n          switch (command) {\n          case SVGPathSeg.PATHSEG_MOVETO_REL:\n            return new SVGPathSegMovetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_MOVETO_ABS:\n            return new SVGPathSegMovetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_REL:\n            return new SVGPathSegLinetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_ABS:\n            return new SVGPathSegLinetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:\n            return new SVGPathSegLinetoHorizontalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:\n            return new SVGPathSegLinetoHorizontalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:\n            return new SVGPathSegLinetoVerticalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:\n            return new SVGPathSegLinetoVerticalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_CLOSEPATH:\n            this._skipOptionalSpaces();\n            return new SVGPathSegClosePath(owningPathSegList);\n          case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:\n            return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:\n            return new SVGPathSegCurvetoQuadraticSmoothAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_ARC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } case SVGPathSeg.PATHSEG_ARC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } default:\n            throw new Error('Unknown path seg type.');\n          }\n        }\n      }\n\n      const builder = new Builder();\n      const source = new Source(string);\n\n      if (!source.initialCommandIsMoveTo()) {\n        return [];\n      }\n      while (source.hasMoreData()) {\n        const pathSeg = source.parseSegment();\n        if (!pathSeg) {\n          return [];\n        }\n        builder.appendSegment(pathSeg);\n      }\n\n      return builder.pathSegList;\n    }\n  }\n\n  SVGPathSegList.prototype.classname = 'SVGPathSegList';\n\n  Object.defineProperty(SVGPathSegList.prototype, 'numberOfItems', {\n    get () {\n      this._checkPathSynchronizedToList();\n      return this._list.length;\n    },\n    enumerable: true\n  });\n\n  SVGPathSegList._pathSegArrayAsString = function (pathSegArray) {\n    let string = '';\n    let first = true;\n    pathSegArray.forEach((pathSeg) => {\n      if (first) {\n        first = false;\n        string += pathSeg._asPathString();\n      } else {\n        string += ' ' + pathSeg._asPathString();\n      }\n    });\n    return string;\n  };\n\n  // Add the pathSegList accessors to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGAnimatedPathData\n  Object.defineProperties(SVGPathElement.prototype, {\n    pathSegList: {\n      get () {\n        if (!this._pathSegList) {\n          this._pathSegList = new SVGPathSegList(this);\n        }\n        return this._pathSegList;\n      },\n      enumerable: true\n    },\n    // FIXME: The following are not implemented and simply return SVGPathElement.pathSegList.\n    normalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedNormalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true}\n  });\n  window.SVGPathSegList = SVGPathSegList;\n}\n})();\n","/* globals jQuery */\n/**\n * Browser detection\n * @module browser\n * @license MIT\n *\n * @copyright 2010 Jeff Schiller, 2010 Alexis Deveria\n */\n\n// Dependencies:\n// 1) jQuery (for $.alert())\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\n\nconst $ = jQuery;\n\nconst supportsSVG_ = (function () {\nreturn Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);\n}());\n\n/**\n * @function module:browser.supportsSvg\n * @returns {boolean}\n*/\nexport const supportsSvg = () => supportsSVG_;\n\nconst {userAgent} = navigator;\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n// Note: Browser sniffing should only be used if no other detection method is possible\nconst isOpera_ = Boolean(window.opera);\nconst isWebkit_ = userAgent.includes('AppleWebKit');\nconst isGecko_ = userAgent.includes('Gecko/');\nconst isIE_ = userAgent.includes('MSIE');\nconst isChrome_ = userAgent.includes('Chrome/');\nconst isWindows_ = userAgent.includes('Windows');\nconst isMac_ = userAgent.includes('Macintosh');\nconst isTouch_ = 'ontouchstart' in window;\n\nconst supportsSelectors_ = (function () {\nreturn Boolean(svg.querySelector);\n}());\n\nconst supportsXpath_ = (function () {\nreturn Boolean(document.evaluate);\n}());\n\n// segList functions (for FF1.5 and 2.0)\nconst supportsPathReplaceItem_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.replaceItem(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\nconst supportsPathInsertItemBefore_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.insertItemBefore(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\n// text character positioning (for IE9 and now Chrome)\nconst supportsGoodTextCharPos_ = (function () {\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgroot);\nsvgcontent.setAttribute('x', 5);\nsvgroot.append(svgcontent);\nconst text = document.createElementNS(NS.SVG, 'text');\ntext.textContent = 'a';\nsvgcontent.append(text);\ntry { // Chrome now fails here\n  const pos = text.getStartPositionOfChar(0).x;\n  return (pos === 0);\n} catch (err) {\n  return false;\n} finally {\n  svgroot.remove();\n}\n}());\n\nconst supportsPathBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 C0,0 10,10 10,0');\nsvgcontent.append(path);\nconst bbox = path.getBBox();\nsvgcontent.remove();\nreturn (bbox.height > 4 && bbox.height < 5);\n}());\n\n// Support for correct bbox sizing on groups with horizontal/vertical lines\nconst supportsHVLineContainerBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,0');\nconst path2 = document.createElementNS(NS.SVG, 'path');\npath2.setAttribute('d', 'M5,0 15,0');\nconst g = document.createElementNS(NS.SVG, 'g');\ng.append(path, path2);\nsvgcontent.append(g);\nconst bbox = g.getBBox();\nsvgcontent.remove();\n// Webkit gives 0, FF gives 10, Opera (correctly) gives 15\nreturn (bbox.width === 15);\n}());\n\nconst supportsEditableText_ = (function () {\n// TODO: Find better way to check support for this\nreturn isOpera_;\n}());\n\nconst supportsGoodDecimals_ = (function () {\n// Correct decimals on clone attributes (Opera < 10.5/win/non-en)\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('x', 0.1);\nconst crect = rect.cloneNode(false);\nconst retValue = (!crect.getAttribute('x').includes(','));\nif (!retValue) {\n  // Todo: i18nize or remove\n  $.alert(\n    'NOTE: This version of Opera is known to contain bugs in SVG-edit.\\n' +\n    'Please upgrade to the <a href=\"http://opera.com\">latest version</a> in which the problems have been fixed.'\n  );\n}\nreturn retValue;\n}());\n\nconst supportsNonScalingStroke_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('style', 'vector-effect:non-scaling-stroke');\nreturn rect.style.vectorEffect === 'non-scaling-stroke';\n}());\n\nlet supportsNativeSVGTransformLists_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nconst rxform = rect.transform.baseVal;\nconst t1 = svg.createSVGTransform();\nrxform.appendItem(t1);\nconst r1 = rxform.getItem(0);\n// Todo: Do frame-independent instance checking\nreturn r1 instanceof SVGTransform && t1 instanceof SVGTransform &&\n  r1.type === t1.type && r1.angle === t1.angle &&\n  r1.matrix.a === t1.matrix.a &&\n  r1.matrix.b === t1.matrix.b &&\n  r1.matrix.c === t1.matrix.c &&\n  r1.matrix.d === t1.matrix.d &&\n  r1.matrix.e === t1.matrix.e &&\n  r1.matrix.f === t1.matrix.f;\n}());\n\n// Public API\n\n/**\n * @function module:browser.isOpera\n * @returns {boolean}\n*/\nexport const isOpera = () => isOpera_;\n/**\n * @function module:browser.isWebkit\n * @returns {boolean}\n*/\nexport const isWebkit = () => isWebkit_;\n/**\n * @function module:browser.isGecko\n * @returns {boolean}\n*/\nexport const isGecko = () => isGecko_;\n/**\n * @function module:browser.isIE\n * @returns {boolean}\n*/\nexport const isIE = () => isIE_;\n/**\n * @function module:browser.isChrome\n * @returns {boolean}\n*/\nexport const isChrome = () => isChrome_;\n/**\n * @function module:browser.isWindows\n * @returns {boolean}\n*/\nexport const isWindows = () => isWindows_;\n/**\n * @function module:browser.isMac\n * @returns {boolean}\n*/\nexport const isMac = () => isMac_;\n/**\n * @function module:browser.isTouch\n * @returns {boolean}\n*/\nexport const isTouch = () => isTouch_;\n\n/**\n * @function module:browser.supportsSelectors\n * @returns {boolean}\n*/\nexport const supportsSelectors = () => supportsSelectors_;\n\n/**\n * @function module:browser.supportsXpath\n * @returns {boolean}\n*/\nexport const supportsXpath = () => supportsXpath_;\n\n/**\n * @function module:browser.supportsPathReplaceItem\n * @returns {boolean}\n*/\nexport const supportsPathReplaceItem = () => supportsPathReplaceItem_;\n\n/**\n * @function module:browser.supportsPathInsertItemBefore\n * @returns {boolean}\n*/\nexport const supportsPathInsertItemBefore = () => supportsPathInsertItemBefore_;\n\n/**\n * @function module:browser.supportsPathBBox\n * @returns {boolean}\n*/\nexport const supportsPathBBox = () => supportsPathBBox_;\n\n/**\n * @function module:browser.supportsHVLineContainerBBox\n * @returns {boolean}\n*/\nexport const supportsHVLineContainerBBox = () => supportsHVLineContainerBBox_;\n\n/**\n * @function module:browser.supportsGoodTextCharPos\n * @returns {boolean}\n*/\nexport const supportsGoodTextCharPos = () => supportsGoodTextCharPos_;\n\n/**\n* @function module:browser.supportsEditableText\n * @returns {boolean}\n*/\nexport const supportsEditableText = () => supportsEditableText_;\n\n/**\n * @function module:browser.supportsGoodDecimals\n * @returns {boolean}\n*/\nexport const supportsGoodDecimals = () => supportsGoodDecimals_;\n\n/**\n* @function module:browser.supportsNonScalingStroke\n* @returns {boolean}\n*/\nexport const supportsNonScalingStroke = () => supportsNonScalingStroke_;\n\n/**\n* @function module:browser.supportsNativeTransformLists\n* @returns {boolean}\n*/\nexport const supportsNativeTransformLists = () => supportsNativeSVGTransformLists_;\n\n/**\n * Set `supportsNativeSVGTransformLists_` to `false` (for unit testing).\n * @function module:browser.disableSupportsNativeTransformLists\n * @returns {undefined}\n*/\nexport const disableSupportsNativeTransformLists = () => {\n  supportsNativeSVGTransformLists_ = false;\n};\n","/**\n * jQuery module to work with SVG attributes\n * @module jQueryAttr\n * @license MIT\n */\n\n/**\n* This fixes `$(...).attr()` to work as expected with SVG elements.\n* Does not currently use `*AttributeNS()` since we rarely need that.\n* Adds {@link external:jQuery.fn.attr}.\n* See {@link https://api.jquery.com/attr/} for basic documentation of `.attr()`.\n*\n* Additional functionality:\n* - When getting attributes, a string that's a number is returned as type number.\n* - If an array is supplied as the first parameter, multiple values are returned\n*    as an object with values for each given attribute.\n* @function module:jQueryAttr.jQueryAttr\n* @param {external:jQuery} $ The jQuery object to which to add the plug-in\n* @returns {external:jQuery}\n*/\nexport default function jQueryPluginSVG ($) {\n  const proxied = $.fn.attr,\n    svgns = 'http://www.w3.org/2000/svg';\n  /**\n  * @typedef {PlainObject.<string, string|Float>} module:jQueryAttr.Attributes\n  */\n  /**\n  * @function external:jQuery.fn.attr\n  * @param {string|string[]|PlainObject.<string, string>} key\n  * @param {string} value\n  * @returns {external:jQuery|module:jQueryAttr.Attributes}\n  */\n  $.fn.attr = function (key, value) {\n    const len = this.length;\n    if (!len) { return proxied.call(this, key, value); }\n    for (let i = 0; i < len; ++i) {\n      const elem = this[i];\n      // set/get SVG attribute\n      if (elem.namespaceURI === svgns) {\n        // Setting attribute\n        if (value !== undefined) {\n          elem.setAttribute(key, value);\n        } else if (Array.isArray(key)) {\n          // Getting attributes from array\n          const obj = {};\n          let j = key.length;\n\n          while (j--) {\n            const aname = key[j];\n            let attr = elem.getAttribute(aname);\n            // This returns a number when appropriate\n            if (attr || attr === '0') {\n              attr = isNaN(attr) ? attr : (attr - 0);\n            }\n            obj[aname] = attr;\n          }\n          return obj;\n        }\n        if (typeof key === 'object') {\n          // Setting attributes from object\n          for (const [name, val] of Object.entries(key)) {\n            elem.setAttribute(name, val);\n          }\n        // Getting attribute\n        } else {\n          let attr = elem.getAttribute(key);\n          if (attr || attr === '0') {\n            attr = isNaN(attr) ? attr : (attr - 0);\n          }\n          return attr;\n        }\n      } else {\n        return proxied.call(this, key, value);\n      }\n    }\n    return this;\n  };\n  return $;\n}\n","/**\n * Partial polyfill of `SVGTransformList`\n * @module SVGTransformList\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\nimport {supportsNativeTransformLists} from './browser.js';\n\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\n\n/**\n * Helper function to convert `SVGTransform` to a string.\n * @param {SVGTransform} xform\n * @returns {string}\n */\nfunction transformToString (xform) {\n  const m = xform.matrix;\n  let text = '';\n  switch (xform.type) {\n  case 1: // MATRIX\n    text = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n    break;\n  case 2: // TRANSLATE\n    text = 'translate(' + m.e + ',' + m.f + ')';\n    break;\n  case 3: // SCALE\n    if (m.a === m.d) {\n      text = 'scale(' + m.a + ')';\n    } else {\n      text = 'scale(' + m.a + ',' + m.d + ')';\n    }\n    break;\n  case 4: { // ROTATE\n    let cx = 0;\n    let cy = 0;\n    // this prevents divide by zero\n    if (xform.angle !== 0) {\n      const K = 1 - m.a;\n      cy = (K * m.f + m.b * m.e) / (K * K + m.b * m.b);\n      cx = (m.e - m.b * cy) / K;\n    }\n    text = 'rotate(' + xform.angle + ' ' + cx + ',' + cy + ')';\n    break;\n  }\n  }\n  return text;\n}\n\n/**\n * Map of SVGTransformList objects.\n */\nlet listMap_ = {};\n\n/**\n* @interface module:SVGTransformList.SVGEditTransformList\n* @property {Integer} numberOfItems unsigned long\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#clear\n* @returns {undefined}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#initialize\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#getItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#insertItemBefore\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#replaceItem\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#removeItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#appendItem\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#createSVGTransformFromMatrix\n* @param {SVGMatrix} matrix\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#consolidate\n* @returns {SVGTransform}\n*/\n\n/**\n* SVGTransformList implementation for Webkit.\n* These methods do not currently raise any exceptions.\n* These methods also do not check that transforms are being inserted.  This is basically\n* implementing as much of SVGTransformList that we need to get the job done.\n* @implements {module:SVGTransformList.SVGEditTransformList}\n*/\nexport class SVGTransformList {// eslint-disable-line no-shadow\n  /**\n  * @param {Element} elem\n  */\n  constructor (elem) {\n    this._elem = elem || null;\n    this._xforms = [];\n    // TODO: how do we capture the undo-ability in the changed transform list?\n    this._update = function () {\n      let tstr = '';\n      // /* const concatMatrix = */ svgroot.createSVGMatrix();\n      for (let i = 0; i < this.numberOfItems; ++i) {\n        const xform = this._list.getItem(i);\n        tstr += transformToString(xform) + ' ';\n      }\n      this._elem.setAttribute('transform', tstr);\n    };\n    this._list = this;\n    this._init = function () {\n      // Transform attribute parser\n      let str = this._elem.getAttribute('transform');\n      if (!str) { return; }\n\n      // TODO: Add skew support in future\n      const re = /\\s*((scale|matrix|rotate|translate)\\s*\\(.*?\\))\\s*,?\\s*/;\n      let m = true;\n      while (m) {\n        m = str.match(re);\n        str = str.replace(re, '');\n        if (m && m[1]) {\n          const x = m[1];\n          const bits = x.split(/\\s*\\(/);\n          const name = bits[0];\n          const valBits = bits[1].match(/\\s*(.*?)\\s*\\)/);\n          valBits[1] = valBits[1].replace(/(\\d)-/g, '$1 -');\n          const valArr = valBits[1].split(/[, ]+/);\n          const letters = 'abcdef'.split('');\n          const mtx = svgroot.createSVGMatrix();\n          Object.values(valArr).forEach(function (item, i) {\n            valArr[i] = parseFloat(item);\n            if (name === 'matrix') {\n              mtx[letters[i]] = valArr[i];\n            }\n          });\n          const xform = svgroot.createSVGTransform();\n          const fname = 'set' + name.charAt(0).toUpperCase() + name.slice(1);\n          const values = name === 'matrix' ? [mtx] : valArr;\n\n          if (name === 'scale' && values.length === 1) {\n            values.push(values[0]);\n          } else if (name === 'translate' && values.length === 1) {\n            values.push(0);\n          } else if (name === 'rotate' && values.length === 1) {\n            values.push(0, 0);\n          }\n          xform[fname](...values);\n          this._list.appendItem(xform);\n        }\n      }\n    };\n    this._removeFromOtherLists = function (item) {\n      if (item) {\n        // Check if this transform is already in a transformlist, and\n        // remove it if so.\n        Object.values(listMap_).some((tl) => {\n          for (let i = 0, len = tl._xforms.length; i < len; ++i) {\n            if (tl._xforms[i] === item) {\n              tl.removeItem(i);\n              return true;\n            }\n          }\n          return false;\n        });\n      }\n    };\n\n    this.numberOfItems = 0;\n  }\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    this.numberOfItems = 0;\n    this._xforms = [];\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  initialize (newItem) {\n    this.numberOfItems = 1;\n    this._removeFromOtherLists(newItem);\n    this._xforms = [newItem];\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  getItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      return this._xforms[index];\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  insertItemBefore (newItem, index) {\n    let retValue = null;\n    if (index >= 0) {\n      if (index < this.numberOfItems) {\n        this._removeFromOtherLists(newItem);\n        const newxforms = new Array(this.numberOfItems + 1);\n        // TODO: use array copying and slicing\n        let i;\n        for (i = 0; i < index; ++i) {\n          newxforms[i] = this._xforms[i];\n        }\n        newxforms[i] = newItem;\n        for (let j = i + 1; i < this.numberOfItems; ++j, ++i) {\n          newxforms[j] = this._xforms[i];\n        }\n        this.numberOfItems++;\n        this._xforms = newxforms;\n        retValue = newItem;\n        this._list._update();\n      } else {\n        retValue = this._list.appendItem(newItem);\n      }\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  replaceItem (newItem, index) {\n    let retValue = null;\n    if (index < this.numberOfItems && index >= 0) {\n      this._removeFromOtherLists(newItem);\n      this._xforms[index] = newItem;\n      retValue = newItem;\n      this._list._update();\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  removeItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      const retValue = this._xforms[index];\n      const newxforms = new Array(this.numberOfItems - 1);\n      let i;\n      for (i = 0; i < index; ++i) {\n        newxforms[i] = this._xforms[i];\n      }\n      for (let j = i; j < this.numberOfItems - 1; ++j, ++i) {\n        newxforms[j] = this._xforms[i + 1];\n      }\n      this.numberOfItems--;\n      this._xforms = newxforms;\n      this._list._update();\n      return retValue;\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  appendItem (newItem) {\n    this._removeFromOtherLists(newItem);\n    this._xforms.push(newItem);\n    this.numberOfItems++;\n    this._list._update();\n    return newItem;\n  }\n}\n\n/**\n* @function module:SVGTransformList.resetListMap\n* @returns {undefined}\n*/\nexport const resetListMap = function () {\n  listMap_ = {};\n};\n\n/**\n * Removes transforms of the given element from the map.\n * @function module:SVGTransformList.removeElementFromListMap\n * @param {Element} elem - a DOM Element\n * @returns {undefined}\n */\nexport let removeElementFromListMap = function (elem) { // eslint-disable-line import/no-mutable-exports\n  if (elem.id && listMap_[elem.id]) {\n    delete listMap_[elem.id];\n  }\n};\n\n/**\n* Returns an object that behaves like a `SVGTransformList` for the given DOM element.\n* @function module:SVGTransformList.getTransformList\n* @param {Element} elem - DOM element to get a transformlist from\n* @todo The polyfill should have `SVGAnimatedTransformList` and this should use it\n* @returns {SVGAnimatedTransformList|SVGTransformList}\n*/\nexport const getTransformList = function (elem) {\n  if (!supportsNativeTransformLists()) {\n    const id = elem.id || 'temp';\n    let t = listMap_[id];\n    if (!t || id === 'temp') {\n      listMap_[id] = new SVGTransformList(elem);\n      listMap_[id]._init();\n      t = listMap_[id];\n    }\n    return t;\n  }\n  if (elem.transform) {\n    return elem.transform.baseVal;\n  }\n  if (elem.gradientTransform) {\n    return elem.gradientTransform.baseVal;\n  }\n  if (elem.patternTransform) {\n    return elem.patternTransform.baseVal;\n  }\n\n  return null;\n};\n\n/**\n* @callback module:SVGTransformList.removeElementFromListMap\n* @param {Element} elem\n*/\n/**\n* Replace `removeElementFromListMap` for unit-testing.\n* @function module:SVGTransformList.changeRemoveElementFromListMap\n* @param {module:SVGTransformList.removeElementFromListMap} cb Passed a single argument `elem`\n* @returns {undefined}\n*/\n\nexport const changeRemoveElementFromListMap = function (cb) { // eslint-disable-line promise/prefer-await-to-callbacks\n  removeElementFromListMap = cb;\n};\n","/**\n * Tools for working with units\n * @module units\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\nimport {isNullish} from './utilities.js';\n\nconst wAttrs = ['x', 'x1', 'cx', 'rx', 'width'];\nconst hAttrs = ['y', 'y1', 'cy', 'ry', 'height'];\nconst unitAttrs = ['r', 'radius', ...wAttrs, ...hAttrs];\n// unused\n/*\nconst unitNumMap = {\n  '%': 2,\n  em: 3,\n  ex: 4,\n  px: 5,\n  cm: 6,\n  mm: 7,\n  in: 8,\n  pt: 9,\n  pc: 10\n};\n*/\n// Container of elements.\nlet elementContainer_;\n\n// Stores mapping of unit type to user coordinates.\nlet typeMap_ = {};\n\n/**\n * @interface module:units.ElementContainer\n */\n/**\n * @function module:units.ElementContainer#getBaseUnit\n * @returns {string} The base unit type of the container ('em')\n */\n/**\n * @function module:units.ElementContainer#getElement\n * @returns {?Element} An element in the container given an id\n */\n/**\n * @function module:units.ElementContainer#getHeight\n * @returns {Float} The container's height\n */\n/**\n * @function module:units.ElementContainer#getWidth\n * @returns {Float} The container's width\n */\n/**\n * @function module:units.ElementContainer#getRoundDigits\n * @returns {Integer} The number of digits number should be rounded to\n */\n\n/**\n * @typedef {PlainObject} module:units.TypeMap\n * @property {Float} em\n * @property {Float} ex\n * @property {Float} in\n * @property {Float} cm\n * @property {Float} mm\n * @property {Float} pt\n * @property {Float} pc\n * @property {Integer} px\n * @property {0} %\n */\n\n/**\n * Initializes this module.\n *\n * @function module:units.init\n * @param {module:units.ElementContainer} elementContainer - An object implementing the ElementContainer interface.\n * @returns {undefined}\n */\nexport const init = function (elementContainer) {\n  elementContainer_ = elementContainer;\n\n  // Get correct em/ex values by creating a temporary SVG.\n  const svg = document.createElementNS(NS.SVG, 'svg');\n  document.body.append(svg);\n  const rect = document.createElementNS(NS.SVG, 'rect');\n  rect.setAttribute('width', '1em');\n  rect.setAttribute('height', '1ex');\n  rect.setAttribute('x', '1in');\n  svg.append(rect);\n  const bb = rect.getBBox();\n  svg.remove();\n\n  const inch = bb.x;\n  typeMap_ = {\n    em: bb.width,\n    ex: bb.height,\n    in: inch,\n    cm: inch / 2.54,\n    mm: inch / 25.4,\n    pt: inch / 72,\n    pc: inch / 6,\n    px: 1,\n    '%': 0\n  };\n};\n\n/**\n* Group: Unit conversion functions\n*/\n\n/**\n * @function module:units.getTypeMap\n * @returns {module:units.TypeMap} The unit object with values for each unit\n*/\nexport const getTypeMap = function () {\n  return typeMap_;\n};\n\n/**\n* @typedef {GenericArray} module:units.CompareNumbers\n* @property {Integer} length 2\n* @property {Float} 0\n* @property {Float} 1\n*/\n\n/**\n* Rounds a given value to a float with number of digits defined in\n* `round_digits` of `saveOptions`\n*\n* @function module:units.shortFloat\n* @param {string|Float|module:units.CompareNumbers} val - The value (or Array of two numbers) to be rounded\n* @returns {Float|string} If a string/number was given, returns a Float. If an array, return a string\n* with comma-separated floats\n*/\nexport const shortFloat = function (val) {\n  const digits = elementContainer_.getRoundDigits();\n  if (!isNaN(val)) {\n    return Number(Number(val).toFixed(digits));\n  }\n  if (Array.isArray(val)) {\n    return shortFloat(val[0]) + ',' + shortFloat(val[1]);\n  }\n  return parseFloat(val).toFixed(digits) - 0;\n};\n\n/**\n* Converts the number to given unit or baseUnit.\n* @function module:units.convertUnit\n* @param {string|Float} val\n* @param {\"em\"|\"ex\"|\"in\"|\"cm\"|\"mm\"|\"pt\"|\"pc\"|\"px\"|\"%\"} [unit]\n* @returns {Float}\n*/\nexport const convertUnit = function (val, unit) {\n  unit = unit || elementContainer_.getBaseUnit();\n  // baseVal.convertToSpecifiedUnits(unitNumMap[unit]);\n  // const val = baseVal.valueInSpecifiedUnits;\n  // baseVal.convertToSpecifiedUnits(1);\n  return shortFloat(val / typeMap_[unit]);\n};\n\n/**\n* Sets an element's attribute based on the unit in its current value.\n*\n* @function module:units.setUnitAttr\n* @param {Element} elem - DOM element to be changed\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {undefined}\n*/\nexport const setUnitAttr = function (elem, attr, val) {\n  //  if (!isNaN(val)) {\n  // New value is a number, so check currently used unit\n  // const oldVal = elem.getAttribute(attr);\n\n  // Enable this for alternate mode\n  // if (oldVal !== null && (isNaN(oldVal) || elementContainer_.getBaseUnit() !== 'px')) {\n  //   // Old value was a number, so get unit, then convert\n  //   let unit;\n  //   if (oldVal.substr(-1) === '%') {\n  //     const res = getResolution();\n  //     unit = '%';\n  //     val *= 100;\n  //     if (wAttrs.includes(attr)) {\n  //       val = val / res.w;\n  //     } else if (hAttrs.includes(attr)) {\n  //       val = val / res.h;\n  //     } else {\n  //       return val / Math.sqrt((res.w*res.w) + (res.h*res.h))/Math.sqrt(2);\n  //     }\n  //   } else {\n  //     if (elementContainer_.getBaseUnit() !== 'px') {\n  //       unit = elementContainer_.getBaseUnit();\n  //     } else {\n  //       unit = oldVal.substr(-2);\n  //     }\n  //     val = val / typeMap_[unit];\n  //   }\n  //\n  // val += unit;\n  // }\n  // }\n  elem.setAttribute(attr, val);\n};\n\nconst attrsToConvert = {\n  line: ['x1', 'x2', 'y1', 'y2'],\n  circle: ['cx', 'cy', 'r'],\n  ellipse: ['cx', 'cy', 'rx', 'ry'],\n  foreignObject: ['x', 'y', 'width', 'height'],\n  rect: ['x', 'y', 'width', 'height'],\n  image: ['x', 'y', 'width', 'height'],\n  use: ['x', 'y', 'width', 'height'],\n  text: ['x', 'y']\n};\n\n/**\n* Converts all applicable attributes to the configured baseUnit.\n* @function module:units.convertAttrs\n* @param {Element} element - A DOM element whose attributes should be converted\n* @returns {undefined}\n*/\nexport const convertAttrs = function (element) {\n  const elName = element.tagName;\n  const unit = elementContainer_.getBaseUnit();\n  const attrs = attrsToConvert[elName];\n  if (!attrs) { return; }\n\n  const len = attrs.length;\n  for (let i = 0; i < len; i++) {\n    const attr = attrs[i];\n    const cur = element.getAttribute(attr);\n    if (cur) {\n      if (!isNaN(cur)) {\n        element.setAttribute(attr, (cur / typeMap_[unit]) + unit);\n      }\n      // else {\n      // Convert existing?\n      // }\n    }\n  }\n};\n\n/**\n* Converts given values to numbers. Attributes must be supplied in\n* case a percentage is given.\n*\n* @function module:units.convertToNum\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {Float} The converted number\n*/\nexport const convertToNum = function (attr, val) {\n  // Return a number if that's what it already is\n  if (!isNaN(val)) { return val - 0; }\n  if (val.substr(-1) === '%') {\n    // Deal with percentage, depends on attribute\n    const num = val.substr(0, val.length - 1) / 100;\n    const width = elementContainer_.getWidth();\n    const height = elementContainer_.getHeight();\n\n    if (wAttrs.includes(attr)) {\n      return num * width;\n    }\n    if (hAttrs.includes(attr)) {\n      return num * height;\n    }\n    return num * Math.sqrt((width * width) + (height * height)) / Math.sqrt(2);\n  }\n  const unit = val.substr(-2);\n  const num = val.substr(0, val.length - 2);\n  // Note that this multiplication turns the string into a number\n  return num * typeMap_[unit];\n};\n\n/**\n* Check if an attribute's value is in a valid format.\n* @function module:units.isValidUnit\n* @param {string} attr - The name of the attribute associated with the value\n* @param {string} val - The attribute value to check\n* @param {Element} selectedElement\n* @returns {boolean} Whether the unit is valid\n*/\nexport const isValidUnit = function (attr, val, selectedElement) {\n  if (unitAttrs.includes(attr)) {\n    // True if it's just a number\n    if (!isNaN(val)) {\n      return true;\n    }\n    // Not a number, check if it has a valid unit\n    val = val.toLowerCase();\n    return Object.keys(typeMap_).some((unit) => {\n      const re = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n      return re.test(val);\n    });\n  }\n  if (attr === 'id') {\n    // if we're trying to change the id, make sure it's not already present in the doc\n    // and the id value is valid.\n\n    let result = false;\n    // because getElem() can throw an exception in the case of an invalid id\n    // (according to https://www.w3.org/TR/xml-id/ IDs must be a NCName)\n    // we wrap it in an exception and only return true if the ID was valid and\n    // not already present\n    try {\n      const elem = elementContainer_.getElement(val);\n      result = (isNullish(elem) || elem === selectedElement);\n    } catch (e) {}\n    return result;\n  }\n  return true;\n};\n","/**\n * For command history tracking and undo functionality\n * @module history\n * @license MIT\n * @copyright 2010 Jeff Schiller\n */\n\nimport {getHref, setHref, getRotationAngle, isNullish} from './utilities.js';\nimport {removeElementFromListMap} from './svgtransformlist.js';\n\n/**\n* Group: Undo/Redo history management\n*/\nexport const HistoryEventTypes = {\n  BEFORE_APPLY: 'before_apply',\n  AFTER_APPLY: 'after_apply',\n  BEFORE_UNAPPLY: 'before_unapply',\n  AFTER_UNAPPLY: 'after_unapply'\n};\n\n// const removedElements = {};\n\n/**\n* Base class for commands.\n*/\nclass Command {\n  /**\n  * @returns {string}\n  */\n  getText () {\n    return this.text;\n  }\n}\n\n// Todo: Figure out why the interface members aren't showing\n//   up (with or without modules applied), despite our apparently following\n//   http://usejsdoc.org/tags-interface.html#virtual-comments\n\n/**\n * An interface that all command objects must implement.\n * @interface module:history.HistoryCommand\n*/\n/**\n * Applies\n *\n * @function module:history.HistoryCommand#apply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n *\n * Unapplies\n * @function module:history.HistoryCommand#unapply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n * Returns the elements\n * @function module:history.HistoryCommand#elements\n * @returns {Element[]}\n */\n/**\n * Gets the text\n * @function module:history.HistoryCommand#getText\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand.type\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand#type\n * @returns {string}\n*/\n\n/**\n * @event module:history~Command#event:history\n * @type {module:history.HistoryCommand}\n */\n\n/**\n * An interface for objects that will handle history events.\n * @interface module:history.HistoryEventHandler\n */\n/**\n *\n * @function module:history.HistoryEventHandler#handleHistoryEvent\n * @param {string} eventType One of the HistoryEvent types\n * @param {module:history~Command#event:history} command\n * @listens module:history~Command#event:history\n * @returns {undefined}\n *\n */\n\n/**\n * History command for an element that had its DOM position changed.\n * @implements {module:history.HistoryCommand}\n * @param {Element} elem - The DOM element that was moved\n * @param {Element} oldNextSibling - The element's next sibling before it was moved\n * @param {Element} oldParent - The element's parent before it was moved\n * @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class MoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Move ' + elem.tagName + ' to ' + text) : ('Move ' + elem.tagName);\n    this.oldNextSibling = oldNextSibling;\n    this.oldParent = oldParent;\n    this.newNextSibling = elem.nextSibling;\n    this.newParent = elem.parentNode;\n  }\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.MoveElementCommand';\n  }\n\n  /**\n   * Re-positions the element.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  apply (handler) {\n    // TODO(codedread): Refactor this common event code into a base HistoryCommand class.\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n   * Positions the element back to its original location.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nMoveElementCommand.type = MoveElementCommand.prototype.type;\n\n/**\n* History command for an element that was added to the DOM.\n* @implements {module:history.HistoryCommand}\n*\n* @param {Element} elem - The newly added DOM element\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class InsertElementCommand extends Command {\n  constructor (elem, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Create ' + elem.tagName);\n    this.parent = elem.parentNode;\n    this.nextSibling = this.elem.nextSibling;\n  }\n\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.InsertElementCommand';\n  }\n\n  /**\n  * Re-inserts the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.parent.insertBefore(this.elem, this.nextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Removes the element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.parent = this.elem.parentNode;\n    this.elem = this.elem.parentNode.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nInsertElementCommand.type = InsertElementCommand.prototype.type;\n\n/**\n* History command for an element removed from the DOM.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The removed DOM element\n* @param {Node} oldNextSibling - The DOM element's nextSibling when it was in the DOM\n* @param {Element} oldParent - The DOM element's parent\n* @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class RemoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Delete ' + elem.tagName);\n    this.nextSibling = oldNextSibling;\n    this.parent = oldParent;\n\n    // special hack for webkit: remove this element's entry in the svgTransformLists map\n    removeElementFromListMap(elem);\n  }\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.RemoveElementCommand';\n  }\n\n  /**\n  * Re-removes the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    this.parent = this.elem.parentNode;\n    this.elem = this.parent.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Re-adds the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    if (isNullish(this.nextSibling)) {\n      if (window.console) {\n        console.log('Error: reference element was lost'); // eslint-disable-line no-console\n      }\n    }\n    this.parent.insertBefore(this.elem, this.nextSibling); // Don't use `before` or `prepend` as `this.nextSibling` may be `null`\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nRemoveElementCommand.type = RemoveElementCommand.prototype.type;\n\n/**\n* @typedef {\"#text\"|\"#href\"|string} module:history.CommandAttributeName\n*/\n/**\n* @typedef {PlainObject.<module:history.CommandAttributeName, string>} module:history.CommandAttributes\n*/\n\n/**\n* History command to make a change to an element.\n* Usually an attribute change, but can also be textcontent.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The DOM element that was changed\n* @param {module:history.CommandAttributes} attrs - Attributes to be changed with the values they had *before* the change\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class ChangeElementCommand extends Command {\n  constructor (elem, attrs, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Change ' + elem.tagName + ' ' + text) : ('Change ' + elem.tagName);\n    this.newValues = {};\n    this.oldValues = attrs;\n    for (const attr in attrs) {\n      if (attr === '#text') {\n        this.newValues[attr] = elem.textContent;\n      } else if (attr === '#href') {\n        this.newValues[attr] = getHref(elem);\n      } else {\n        this.newValues[attr] = elem.getAttribute(attr);\n      }\n    }\n  }\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.ChangeElementCommand';\n  }\n\n  /**\n  * Performs the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    let bChangedTransform = false;\n    Object.entries(this.newValues).forEach(([attr, value]) => {\n      if (value) {\n        if (attr === '#text') {\n          this.elem.textContent = value;\n        } else if (attr === '#href') {\n          setHref(this.elem, value);\n        } else {\n          this.elem.setAttribute(attr, value);\n        }\n      } else if (attr === '#text') {\n        this.elem.textContent = '';\n      } else {\n        this.elem.setAttribute(attr, '');\n        this.elem.removeAttribute(attr);\n      }\n\n      if (attr === 'transform') { bChangedTransform = true; }\n    });\n\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * Reverses the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    let bChangedTransform = false;\n    Object.entries(this.oldValues).forEach(([attr, value]) => {\n      if (value) {\n        if (attr === '#text') {\n          this.elem.textContent = value;\n        } else if (attr === '#href') {\n          setHref(this.elem, value);\n        } else {\n          this.elem.setAttribute(attr, value);\n        }\n      } else if (attr === '#text') {\n        this.elem.textContent = '';\n      } else {\n        this.elem.removeAttribute(attr);\n      }\n      if (attr === 'transform') { bChangedTransform = true; }\n    });\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    // Remove transformlist to prevent confusion that causes bugs like 575.\n    removeElementFromListMap(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nChangeElementCommand.type = ChangeElementCommand.prototype.type;\n\n// TODO: create a 'typing' command object that tracks changes in text\n// if a new Typing command is created and the top command on the stack is also a Typing\n// and they both affect the same element, then collapse the two commands into one\n\n/**\n* History command that can contain/execute multiple other commands.\n* @implements {module:history.HistoryCommand}\n*/\nexport class BatchCommand extends Command {\n  /**\n  * @param {string} [text] - An optional string visible to user related to this change\n  */\n  constructor (text) {\n    super();\n    this.text = text || 'Batch Command';\n    this.stack = [];\n  }\n\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.BatchCommand';\n  }\n\n  /**\n  * Runs \"apply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    const len = this.stack.length;\n    for (let i = 0; i < len; ++i) {\n      this.stack[i].apply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Runs \"unapply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    for (let i = this.stack.length - 1; i >= 0; i--) {\n      this.stack[i].unapply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * Iterate through all our subcommands.\n  * @returns {Element[]} All the elements we are changing\n  */\n  elements () {\n    const elems = [];\n    let cmd = this.stack.length;\n    while (cmd--) {\n      const thisElems = this.stack[cmd].elements();\n      let elem = thisElems.length;\n      while (elem--) {\n        if (!elems.includes(thisElems[elem])) { elems.push(thisElems[elem]); }\n      }\n    }\n    return elems;\n  }\n\n  /**\n  * Adds a given command to the history stack.\n  * @param {Command} cmd - The undo command object to add\n  * @returns {undefined}\n  */\n  addSubCommand (cmd) {\n    this.stack.push(cmd);\n  }\n\n  /**\n  * @returns {boolean} Indicates whether or not the batch command is empty\n  */\n  isEmpty () {\n    return !this.stack.length;\n  }\n}\nBatchCommand.type = BatchCommand.prototype.type;\n\n/**\n*\n*/\nexport class UndoManager {\n  /**\n  * @param {module:history.HistoryEventHandler} historyEventHandler\n  */\n  constructor (historyEventHandler) {\n    this.handler_ = historyEventHandler || null;\n    this.undoStackPointer = 0;\n    this.undoStack = [];\n\n    // this is the stack that stores the original values, the elements and\n    // the attribute name for begin/finish\n    this.undoChangeStackPointer = -1;\n    this.undoableChangeStack = [];\n  }\n\n  /**\n  * Resets the undo stack, effectively clearing the undo/redo history.\n  * @returns {undefined}\n  */\n  resetUndoStack () {\n    this.undoStack = [];\n    this.undoStackPointer = 0;\n  }\n\n  /**\n  * @returns {Integer} Current size of the undo history stack\n  */\n  getUndoStackSize () {\n    return this.undoStackPointer;\n  }\n\n  /**\n  * @returns {Integer} Current size of the redo history stack\n  */\n  getRedoStackSize () {\n    return this.undoStack.length - this.undoStackPointer;\n  }\n\n  /**\n  * @returns {string} String associated with the next undo command\n  */\n  getNextUndoCommandText () {\n    return this.undoStackPointer > 0 ? this.undoStack[this.undoStackPointer - 1].getText() : '';\n  }\n\n  /**\n  * @returns {string} String associated with the next redo command\n  */\n  getNextRedoCommandText () {\n    return this.undoStackPointer < this.undoStack.length ? this.undoStack[this.undoStackPointer].getText() : '';\n  }\n\n  /**\n  * Performs an undo step.\n  * @returns {undefined}\n  */\n  undo () {\n    if (this.undoStackPointer > 0) {\n      const cmd = this.undoStack[--this.undoStackPointer];\n      cmd.unapply(this.handler_);\n    }\n  }\n\n  /**\n  * Performs a redo step.\n  * @returns {undefined}\n  */\n  redo () {\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      const cmd = this.undoStack[this.undoStackPointer++];\n      cmd.apply(this.handler_);\n    }\n  }\n\n  /**\n  * Adds a command object to the undo history stack.\n  * @param {Command} cmd - The command object to add\n  * @returns {undefined}\n  */\n  addCommandToHistory (cmd) {\n    // FIXME: we MUST compress consecutive text changes to the same element\n    // (right now each keystroke is saved as a separate command that includes the\n    // entire text contents of the text element)\n    // TODO: consider limiting the history that we store here (need to do some slicing)\n\n    // if our stack pointer is not at the end, then we have to remove\n    // all commands after the pointer and insert the new command\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      this.undoStack = this.undoStack.splice(0, this.undoStackPointer);\n    }\n    this.undoStack.push(cmd);\n    this.undoStackPointer = this.undoStack.length;\n  }\n\n  /**\n  * This function tells the canvas to remember the old values of the\n  * `attrName` attribute for each element sent in.  The elements and values\n  * are stored on a stack, so the next call to `finishUndoableChange()` will\n  * pop the elements and old values off the stack, gets the current values\n  * from the DOM and uses all of these to construct the undo-able command.\n  * @param {string} attrName - The name of the attribute being changed\n  * @param {Element[]} elems - Array of DOM elements being changed\n  * @returns {undefined}\n  */\n  beginUndoableChange (attrName, elems) {\n    const p = ++this.undoChangeStackPointer;\n    let i = elems.length;\n    const oldValues = new Array(i), elements = new Array(i);\n    while (i--) {\n      const elem = elems[i];\n      if (isNullish(elem)) { continue; }\n      elements[i] = elem;\n      oldValues[i] = elem.getAttribute(attrName);\n    }\n    this.undoableChangeStack[p] = {\n      attrName,\n      oldValues,\n      elements\n    };\n  }\n\n  /**\n  * This function returns a `BatchCommand` object which summarizes the\n  * change since `beginUndoableChange` was called.  The command can then\n  * be added to the command history.\n  * @returns {BatchCommand} Batch command object with resulting changes\n  */\n  finishUndoableChange () {\n    const p = this.undoChangeStackPointer--;\n    const changeset = this.undoableChangeStack[p];\n    const {attrName} = changeset;\n    const batchCmd = new BatchCommand('Change ' + attrName);\n    let i = changeset.elements.length;\n    while (i--) {\n      const elem = changeset.elements[i];\n      if (isNullish(elem)) { continue; }\n      const changes = {};\n      changes[attrName] = changeset.oldValues[i];\n      if (changes[attrName] !== elem.getAttribute(attrName)) {\n        batchCmd.addSubCommand(new ChangeElementCommand(elem, changes, attrName));\n      }\n    }\n    this.undoableChangeStack[p] = null;\n    return batchCmd;\n  }\n}\n","/**\n * Mathematical utilities\n * @module math\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\n/**\n* @typedef {PlainObject} module:math.AngleCoord45\n* @property {Float} x - The angle-snapped x value\n* @property {Float} y - The angle-snapped y value\n* @property {Integer} a - The angle at which to snap\n*/\n\n/**\n* @typedef {PlainObject} module:math.XYObject\n* @property {Float} x\n* @property {Float} y\n*/\n\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {isNullish} from './utilities.js';\n\n// Constants\nconst NEAR_ZERO = 1e-14;\n\n// Throw away SVGSVGElement used for creating matrices/transforms.\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n/**\n * A (hopefully) quicker function to transform a point by a matrix\n * (this function avoids any DOM calls and just does the math).\n * @function module:math.transformPoint\n * @param {Float} x - Float representing the x coordinate\n * @param {Float} y - Float representing the y coordinate\n * @param {SVGMatrix} m - Matrix object to transform the point with\n * @returns {module:math.XYObject} An x, y object representing the transformed point\n*/\nexport const transformPoint = function (x, y, m) {\n  return {x: m.a * x + m.c * y + m.e, y: m.b * x + m.d * y + m.f};\n};\n\n/**\n * Helper function to check if the matrix performs no actual transform\n * (i.e. exists for identity purposes).\n * @function module:math.isIdentity\n * @param {SVGMatrix} m - The matrix object to check\n * @returns {boolean} Indicates whether or not the matrix is 1,0,0,1,0,0\n*/\nexport const isIdentity = function (m) {\n  return (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && m.e === 0 && m.f === 0);\n};\n\n/**\n * This function tries to return a `SVGMatrix` that is the multiplication `m1 * m2`.\n * We also round to zero when it's near zero.\n * @function module:math.matrixMultiply\n * @param {...SVGMatrix} args - Matrix objects to multiply\n * @returns {SVGMatrix} The matrix object resulting from the calculation\n*/\nexport const matrixMultiply = function (...args) {\n  const m = args.reduceRight((prev, m1) => {\n    return m1.multiply(prev);\n  });\n\n  if (Math.abs(m.a) < NEAR_ZERO) { m.a = 0; }\n  if (Math.abs(m.b) < NEAR_ZERO) { m.b = 0; }\n  if (Math.abs(m.c) < NEAR_ZERO) { m.c = 0; }\n  if (Math.abs(m.d) < NEAR_ZERO) { m.d = 0; }\n  if (Math.abs(m.e) < NEAR_ZERO) { m.e = 0; }\n  if (Math.abs(m.f) < NEAR_ZERO) { m.f = 0; }\n\n  return m;\n};\n\n/**\n * See if the given transformlist includes a non-indentity matrix transform.\n * @function module:math.hasMatrixTransform\n * @param {SVGTransformList} [tlist] - The transformlist to check\n * @returns {boolean} Whether or not a matrix transform was found\n*/\nexport const hasMatrixTransform = function (tlist) {\n  if (!tlist) { return false; }\n  let num = tlist.numberOfItems;\n  while (num--) {\n    const xform = tlist.getItem(num);\n    if (xform.type === 1 && !isIdentity(xform.matrix)) { return true; }\n  }\n  return false;\n};\n\n/**\n* @typedef {PlainObject} module:math.TransformedBox An object with the following values\n* @property {module:math.XYObject} tl - The top left coordinate\n* @property {module:math.XYObject} tr - The top right coordinate\n* @property {module:math.XYObject} bl - The bottom left coordinate\n* @property {module:math.XYObject} br - The bottom right coordinate\n* @property {PlainObject} aabox - Object with the following values:\n* @property {Float} aabox.x - Float with the axis-aligned x coordinate\n* @property {Float} aabox.y - Float with the axis-aligned y coordinate\n* @property {Float} aabox.width - Float with the axis-aligned width coordinate\n* @property {Float} aabox.height - Float with the axis-aligned height coordinate\n*/\n\n/**\n * Transforms a rectangle based on the given matrix.\n * @function module:math.transformBox\n * @param {Float} l - Float with the box's left coordinate\n * @param {Float} t - Float with the box's top coordinate\n * @param {Float} w - Float with the box width\n * @param {Float} h - Float with the box height\n * @param {SVGMatrix} m - Matrix object to transform the box by\n * @returns {module:math.TransformedBox}\n*/\nexport const transformBox = function (l, t, w, h, m) {\n  const tl = transformPoint(l, t, m),\n    tr = transformPoint((l + w), t, m),\n    bl = transformPoint(l, (t + h), m),\n    br = transformPoint((l + w), (t + h), m),\n\n    minx = Math.min(tl.x, tr.x, bl.x, br.x),\n    maxx = Math.max(tl.x, tr.x, bl.x, br.x),\n    miny = Math.min(tl.y, tr.y, bl.y, br.y),\n    maxy = Math.max(tl.y, tr.y, bl.y, br.y);\n\n  return {\n    tl,\n    tr,\n    bl,\n    br,\n    aabox: {\n      x: minx,\n      y: miny,\n      width: (maxx - minx),\n      height: (maxy - miny)\n    }\n  };\n};\n\n/**\n * This returns a single matrix Transform for a given Transform List\n * (this is the equivalent of `SVGTransformList.consolidate()` but unlike\n * that method, this one does not modify the actual `SVGTransformList`).\n * This function is very liberal with its `min`, `max` arguments.\n * @function module:math.transformListToTransform\n * @param {SVGTransformList} tlist - The transformlist object\n * @param {Integer} [min=0] - Optional integer indicating start transform position\n * @param {Integer} [max] - Optional integer indicating end transform position;\n *   defaults to one less than the tlist's `numberOfItems`\n * @returns {SVGTransform} A single matrix transform object\n*/\nexport const transformListToTransform = function (tlist, min, max) {\n  if (isNullish(tlist)) {\n    // Or should tlist = null have been prevented before this?\n    return svg.createSVGTransformFromMatrix(svg.createSVGMatrix());\n  }\n  min = min || 0;\n  max = max || (tlist.numberOfItems - 1);\n  min = parseInt(min);\n  max = parseInt(max);\n  if (min > max) { const temp = max; max = min; min = temp; }\n  let m = svg.createSVGMatrix();\n  for (let i = min; i <= max; ++i) {\n    // if our indices are out of range, just use a harmless identity matrix\n    const mtom = (i >= 0 && i < tlist.numberOfItems\n      ? tlist.getItem(i).matrix\n      : svg.createSVGMatrix());\n    m = matrixMultiply(m, mtom);\n  }\n  return svg.createSVGTransformFromMatrix(m);\n};\n\n/**\n * Get the matrix object for a given element.\n * @function module:math.getMatrix\n * @param {Element} elem - The DOM element to check\n * @returns {SVGMatrix} The matrix object associated with the element's transformlist\n*/\nexport const getMatrix = function (elem) {\n  const tlist = getTransformList(elem);\n  return transformListToTransform(tlist).matrix;\n};\n\n/**\n * Returns a 45 degree angle coordinate associated with the two given\n * coordinates.\n * @function module:math.snapToAngle\n * @param {Integer} x1 - First coordinate's x value\n * @param {Integer} y1 - First coordinate's y value\n * @param {Integer} x2 - Second coordinate's x value\n * @param {Integer} y2 - Second coordinate's y value\n * @returns {module:math.AngleCoord45}\n*/\nexport const snapToAngle = function (x1, y1, x2, y2) {\n  const snap = Math.PI / 4; // 45 degrees\n  const dx = x2 - x1;\n  const dy = y2 - y1;\n  const angle = Math.atan2(dy, dx);\n  const dist = Math.sqrt(dx * dx + dy * dy);\n  const snapangle = Math.round(angle / snap) * snap;\n\n  return {\n    x: x1 + dist * Math.cos(snapangle),\n    y: y1 + dist * Math.sin(snapangle),\n    a: snapangle\n  };\n};\n\n/**\n * Check if two rectangles (BBoxes objects) intersect each other.\n * @function module:math.rectsIntersect\n * @param {SVGRect} r1 - The first BBox-like object\n * @param {SVGRect} r2 - The second BBox-like object\n * @returns {boolean} True if rectangles intersect\n */\nexport const rectsIntersect = function (r1, r2) {\n  return r2.x < (r1.x + r1.width) &&\n    (r2.x + r2.width) > r1.x &&\n    r2.y < (r1.y + r1.height) &&\n    (r2.y + r2.height) > r1.y;\n};\n","/* globals jQuery */\n/**\n * Path functionality\n * @module path\n * @license MIT\n *\n * @copyright 2011 Alexis Deveria, 2011 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {shortFloat} from './units.js';\nimport {ChangeElementCommand, BatchCommand} from './history.js';\nimport {\n  transformPoint, getMatrix, snapToAngle, rectsIntersect,\n  transformListToTransform\n} from './math.js';\nimport {\n  assignAttributes, getElem, getRotationAngle, getBBox,\n  getRefElem, findDefs, snapToGrid, isNullish,\n  getBBox as utilsGetBBox\n} from './utilities.js';\nimport {\n  supportsPathInsertItemBefore, supportsPathReplaceItem, isWebkit\n} from './browser.js';\n\nconst $ = jQuery;\n\nconst segData = {\n  2: ['x', 'y'], // PATHSEG_MOVETO_ABS\n  4: ['x', 'y'], // PATHSEG_LINETO_ABS\n  6: ['x', 'y', 'x1', 'y1', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_ABS\n  8: ['x', 'y', 'x1', 'y1'], // PATHSEG_CURVETO_QUADRATIC_ABS\n  10: ['x', 'y', 'r1', 'r2', 'angle', 'largeArcFlag', 'sweepFlag'], // PATHSEG_ARC_ABS\n  12: ['x'], // PATHSEG_LINETO_HORIZONTAL_ABS\n  14: ['y'], // PATHSEG_LINETO_VERTICAL_ABS\n  16: ['x', 'y', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_SMOOTH_ABS\n  18: ['x', 'y'] // PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS\n};\n\n/**\n * @tutorial LocaleDocs\n * @typedef {module:locale.LocaleStrings|PlainObject} module:path.uiStrings\n * @property {PlainObject.<string, string>} ui\n*/\n\nconst uiStrings = {};\n/**\n* @function module:path.setUiStrings\n* @param {module:path.uiStrings} strs\n* @returns {undefined}\n*/\nexport const setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.ui);\n};\n\nlet pathFuncs = [];\n\nlet linkControlPts = true;\n\n// Stores references to paths via IDs.\n// TODO: Make this cross-document happy.\nlet pathData = {};\n\n/**\n* @function module:path.setLinkControlPoints\n* @param {boolean} lcp\n* @returns {undefined}\n*/\nexport const setLinkControlPoints = function (lcp) {\n  linkControlPts = lcp;\n};\n\n/**\n * @name module:path.path\n * @type {null|module:path.Path}\n * @memberof module:path\n*/\nexport let path = null; // eslint-disable-line import/no-mutable-exports\n\nlet editorContext_ = null;\n\n/**\n* @external MouseEvent\n*/\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:path.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:path.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n/**\n * @interface module:path.EditorContext\n * @property {module:select.SelectorManager} selectorManager\n * @property {module:svgcanvas.SvgCanvas} canvas\n */\n/**\n * @function module:path.EditorContext#call\n * @param {\"selected\"|\"changed\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed} arg - Argument to pass through to the callback function. If the event is \"changed\", an array of `Element`s is passed; if \"selected\", a single-item array of `Element` is passed.\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#resetD\n * @param {SVGPathElement} p\n * @returns {undefined}\n*/\n/**\n * Note: This doesn't round to an integer necessarily\n * @function module:path.EditorContext#round\n * @param {Float} val\n * @returns {Float} Rounded value to nearest value based on `currentZoom`\n */\n/**\n * @function module:path.EditorContext#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addToSelection\n * @param {Element[]} elemsToAdd - An array of DOM elements to add to the selection\n * @param {boolean} showGrips - Indicates whether the resize grips should be shown\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#remapElement\n * @param {Element} selected - DOM element to be changed\n * @param {PlainObject.<string, string>} changes - Object with changes to be remapped\n * @param {SVGMatrix} m - Matrix object to use for remapping coordinates\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#addSVGElementFromJson\n * @param {module:path.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:path.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:path.EditorContext#getOpacity\n * @returns {Float}\n */\n/**\n * @function module:path.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:path.EditorContext#getContainer\n * @returns {Element}\n */\n/**\n * @function module:path.EditorContext#setStarted\n * @param {boolean} s\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#getRubberBox\n * @returns {SVGRectElement}\n*/\n/**\n * @function module:path.EditorContext#setRubberBox\n * @param {SVGRectElement} rb\n * @returns {SVGRectElement} Same as parameter passed in\n */\n/**\n * @function module:path.EditorContext#addPtsToSelection\n * @param {PlainObject} cfg\n * @param {boolean} cfg.closedSubpath\n * @param {SVGCircleElement[]} cfg.grips\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#endChanges\n * @param {PlainObject} cfg\n * @param {string} cfg.cmd\n * @param {Element} cfg.elem\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#getCurrentZoom\n * @returns {Float} The current zoom level\n */\n/**\n * Returns the last created DOM element ID string\n * @function module:path.EditorContext#getId\n * @returns {string}\n */\n/**\n * Creates and returns a unique ID string for a DOM element\n * @function module:path.EditorContext#getNextId\n * @returns {string}\n*/\n/**\n * Gets the desired element from a mouse event\n * @function module:path.EditorContext#getMouseTarget\n * @param {external:MouseEvent} evt - Event object from the mouse event\n * @returns {Element} DOM element we want\n */\n/**\n * @function module:path.EditorContext#getCurrentMode\n * @returns {string}\n */\n/**\n * @function module:path.EditorContext#setCurrentMode\n * @param {string} cm The mode\n * @returns {string} The same mode as passed in\n*/\n/**\n * @function module:path.EditorContext#getDrawnPath\n * @returns {SVGPathElement|null}\n */\n/**\n * @function module:path.EditorContext#setDrawnPath\n * @param {SVGPathElement|null} dp\n * @returns {SVGPathElement|null} The same value as passed in\n */\n/**\n * @function module:path.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\n/**\n* @function module:path.init\n* @param {module:path.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n\n  pathFuncs = [0, 'ClosePath'];\n  const pathFuncsStrs = [\n    'Moveto', 'Lineto', 'CurvetoCubic', 'CurvetoQuadratic', 'Arc',\n    'LinetoHorizontal', 'LinetoVertical', 'CurvetoCubicSmooth', 'CurvetoQuadraticSmooth'\n  ];\n  $.each(pathFuncsStrs, function (i, s) {\n    pathFuncs.push(s + 'Abs');\n    pathFuncs.push(s + 'Rel');\n  });\n};\n\n/**\n* @function module:path.insertItemBefore\n* @param {Element} elem\n* @param {Segment} newseg\n* @param {Integer} index\n* @returns {undefined}\n*/\nexport const insertItemBefore = function (elem, newseg, index) {\n  // Support insertItemBefore on paths for FF2\n  const list = elem.pathSegList;\n\n  if (supportsPathInsertItemBefore()) {\n    list.insertItemBefore(newseg, index);\n    return;\n  }\n  const len = list.numberOfItems;\n  const arr = [];\n  for (let i = 0; i < len; i++) {\n    const curSeg = list.getItem(i);\n    arr.push(curSeg);\n  }\n  list.clear();\n  for (let i = 0; i < len; i++) {\n    if (i === index) { // index + 1\n      list.appendItem(newseg);\n    }\n    list.appendItem(arr[i]);\n  }\n};\n\n/**\n* @function module:path.ptObjToArr\n* @todo See if this should just live in `replacePathSeg`\n* @param {string} type\n* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem\n* @returns {ArgumentsArray}\n*/\nexport const ptObjToArr = function (type, segItem) {\n  const props = segData[type];\n  return props.map((prop) => {\n    return segItem[prop];\n  });\n};\n\n/**\n* @function module:path.getGripPt\n* @param {Segment} seg\n* @param {module:math.XYObject} altPt\n* @returns {module:math.XYObject}\n*/\nexport const getGripPt = function (seg, altPt) {\n  const {path: pth} = seg;\n  let out = {\n    x: altPt ? altPt.x : seg.item.x,\n    y: altPt ? altPt.y : seg.item.y\n  };\n\n  if (pth.matrix) {\n    const pt = transformPoint(out.x, out.y, pth.matrix);\n    out = pt;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n};\n\n/**\n* @function module:path.getPointFromGrip\n* @param {module:math.XYObject} pt\n* @param {module:path.Path} pth\n* @returns {module:math.XYObject}\n*/\nexport const getPointFromGrip = function (pt, pth) {\n  const out = {\n    x: pt.x,\n    y: pt.y\n  };\n\n  if (pth.matrix) {\n    pt = transformPoint(out.x, out.y, pth.imatrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  return out;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addPointGrip\n* @param {Integer} index\n* @param {Integer} x\n* @param {Integer} y\n* @returns {SVGCircleElement}\n*/\nexport const addPointGrip = function (index, x, y) {\n  // create the container of all the point grips\n  const pointGripContainer = getGripContainer();\n\n  let pointGrip = getElem('pathpointgrip_' + index);\n  // create it\n  if (!pointGrip) {\n    pointGrip = document.createElementNS(NS.SVG, 'circle');\n    const atts = {\n      id: 'pathpointgrip_' + index,\n      display: 'none',\n      r: 4,\n      fill: '#0FF',\n      stroke: '#00F',\n      'stroke-width': 2,\n      cursor: 'move',\n      style: 'pointer-events:all'\n    };\n    if ('pathNodeTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n      atts['xlink:title'] = uiStrings.pathNodeTooltip;\n    }\n    assignAttributes(pointGrip, atts);\n    pointGrip = pointGripContainer.appendChild(pointGrip);\n\n    const grip = $('#pathpointgrip_' + index);\n    grip.dblclick(function () {\n      if (path) {\n        path.setSegType();\n      }\n    });\n  }\n  if (x && y) {\n    // set up the point grip element and display it\n    assignAttributes(pointGrip, {\n      cx: x,\n      cy: y,\n      display: 'inline'\n    });\n  }\n  return pointGrip;\n};\n\n/**\n* @function module:path.getGripContainer\n* @returns {Element}\n*/\nexport const getGripContainer = function () {\n  let c = getElem('pathpointgrip_container');\n  if (!c) {\n    const parentElement = getElem('selectorParentGroup');\n    c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));\n    c.id = 'pathpointgrip_container';\n  }\n  return c;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addCtrlGrip\n* @param {string} id\n* @returns {SVGCircleElement}\n*/\nexport const addCtrlGrip = function (id) {\n  let pointGrip = getElem('ctrlpointgrip_' + id);\n  if (pointGrip) { return pointGrip; }\n\n  pointGrip = document.createElementNS(NS.SVG, 'circle');\n  const atts = {\n    id: 'ctrlpointgrip_' + id,\n    display: 'none',\n    r: 4,\n    fill: '#0FF',\n    stroke: '#55F',\n    'stroke-width': 1,\n    cursor: 'move',\n    style: 'pointer-events:all'\n  };\n  if ('pathCtrlPtTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n    atts['xlink:title'] = uiStrings.pathCtrlPtTooltip;\n  }\n  assignAttributes(pointGrip, atts);\n  getGripContainer().append(pointGrip);\n  return pointGrip;\n};\n\n/**\n* @function module:path.getCtrlLine\n* @param {string} id\n* @returns {SVGLineElement}\n*/\nexport const getCtrlLine = function (id) {\n  let ctrlLine = getElem('ctrlLine_' + id);\n  if (ctrlLine) { return ctrlLine; }\n\n  ctrlLine = document.createElementNS(NS.SVG, 'line');\n  assignAttributes(ctrlLine, {\n    id: 'ctrlLine_' + id,\n    stroke: '#555',\n    'stroke-width': 1,\n    style: 'pointer-events:none'\n  });\n  getGripContainer().append(ctrlLine);\n  return ctrlLine;\n};\n\n/**\n* @function module:path.getPointGrip\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGCircleElement}\n*/\nexport const getPointGrip = function (seg, update) {\n  const {index} = seg;\n  const pointGrip = addPointGrip(index);\n\n  if (update) {\n    const pt = getGripPt(seg);\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n  }\n\n  return pointGrip;\n};\n\n/**\n* @function module:path.getControlPoints\n* @param {Segment} seg\n* @returns {PlainObject.<string, SVGLineElement|SVGCircleElement>}\n*/\nexport const getControlPoints = function (seg) {\n  const {item, index} = seg;\n  if (!('x1' in item) || !('x2' in item)) { return null; }\n  const cpt = {};\n  /* const pointGripContainer = */ getGripContainer();\n\n  // Note that this is intentionally not seg.prev.item\n  const prev = path.segs[index - 1].item;\n\n  const segItems = [prev, item];\n\n  for (let i = 1; i < 3; i++) {\n    const id = index + 'c' + i;\n\n    const ctrlLine = cpt['c' + i + '_line'] = getCtrlLine(id);\n\n    const pt = getGripPt(seg, {x: item['x' + i], y: item['y' + i]});\n    const gpt = getGripPt(seg, {x: segItems[i - 1].x, y: segItems[i - 1].y});\n\n    assignAttributes(ctrlLine, {\n      x1: pt.x,\n      y1: pt.y,\n      x2: gpt.x,\n      y2: gpt.y,\n      display: 'inline'\n    });\n\n    cpt['c' + i + '_line'] = ctrlLine;\n\n    // create it\n    const pointGrip = cpt['c' + i] = addCtrlGrip(id);\n\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n    cpt['c' + i] = pointGrip;\n  }\n  return cpt;\n};\n\n/**\n* This replaces the segment at the given index. Type is given as number.\n* @function module:path.replacePathSeg\n* @param {Integer} type Possible values set during {@link module:path.init}\n* @param {Integer} index\n* @param {ArgumentsArray} pts\n* @param {SVGPathElement} elem\n* @returns {undefined}\n*/\nexport const replacePathSeg = function (type, index, pts, elem) {\n  const pth = elem || path.elem;\n\n  const func = 'createSVGPathSeg' + pathFuncs[type];\n  const seg = pth[func](...pts);\n\n  if (supportsPathReplaceItem()) {\n    pth.pathSegList.replaceItem(seg, index);\n  } else {\n    const segList = pth.pathSegList;\n    const len = segList.numberOfItems;\n    const arr = [];\n    for (let i = 0; i < len; i++) {\n      const curSeg = segList.getItem(i);\n      arr.push(curSeg);\n    }\n    segList.clear();\n    for (let i = 0; i < len; i++) {\n      if (i === index) {\n        segList.appendItem(seg);\n      } else {\n        segList.appendItem(arr[i]);\n      }\n    }\n  }\n};\n\n/**\n* @function module:path.getSegSelector\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGPathElement}\n*/\nexport const getSegSelector = function (seg, update) {\n  const {index} = seg;\n  let segLine = getElem('segline_' + index);\n  if (!segLine) {\n    const pointGripContainer = getGripContainer();\n    // create segline\n    segLine = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(segLine, {\n      id: 'segline_' + index,\n      display: 'none',\n      fill: 'none',\n      stroke: '#0FF',\n      'stroke-width': 2,\n      style: 'pointer-events:none',\n      d: 'M0,0 0,0'\n    });\n    pointGripContainer.append(segLine);\n  }\n\n  if (update) {\n    const {prev} = seg;\n    if (!prev) {\n      segLine.setAttribute('display', 'none');\n      return segLine;\n    }\n\n    const pt = getGripPt(prev);\n    // Set start point\n    replacePathSeg(2, 0, [pt.x, pt.y], segLine);\n\n    const pts = ptObjToArr(seg.type, seg.item); // , true);\n    for (let i = 0; i < pts.length; i += 2) {\n      const point = getGripPt(seg, {x: pts[i], y: pts[i + 1]});\n      pts[i] = point.x;\n      pts[i + 1] = point.y;\n    }\n\n    replacePathSeg(seg.type, 1, pts, segLine);\n  }\n  return segLine;\n};\n\n/**\n * @typedef {PlainObject} Point\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n */\n\n/**\n* Takes three points and creates a smoother line based on them.\n* @function module:path.smoothControlPoints\n* @param {Point} ct1 - Object with x and y values (first control point)\n* @param {Point} ct2 - Object with x and y values (second control point)\n* @param {Point} pt - Object with x and y values (third point)\n* @returns {Point[]} Array of two \"smoothed\" point objects\n*/\nexport const smoothControlPoints = function (ct1, ct2, pt) {\n  // each point must not be the origin\n  const x1 = ct1.x - pt.x,\n    y1 = ct1.y - pt.y,\n    x2 = ct2.x - pt.x,\n    y2 = ct2.y - pt.y;\n\n  if ((x1 !== 0 || y1 !== 0) && (x2 !== 0 || y2 !== 0)) {\n    const\n      r1 = Math.sqrt(x1 * x1 + y1 * y1),\n      r2 = Math.sqrt(x2 * x2 + y2 * y2),\n      nct1 = editorContext_.getSVGRoot().createSVGPoint(),\n      nct2 = editorContext_.getSVGRoot().createSVGPoint();\n    let anglea = Math.atan2(y1, x1),\n      angleb = Math.atan2(y2, x2);\n    if (anglea < 0) { anglea += 2 * Math.PI; }\n    if (angleb < 0) { angleb += 2 * Math.PI; }\n\n    const angleBetween = Math.abs(anglea - angleb),\n      angleDiff = Math.abs(Math.PI - angleBetween) / 2;\n\n    let newAnglea, newAngleb;\n    if (anglea - angleb > 0) {\n      newAnglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff);\n    } else {\n      newAnglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff);\n    }\n\n    // rotate the points\n    nct1.x = r1 * Math.cos(newAnglea) + pt.x;\n    nct1.y = r1 * Math.sin(newAnglea) + pt.y;\n    nct2.x = r2 * Math.cos(newAngleb) + pt.x;\n    nct2.y = r2 * Math.sin(newAngleb) + pt.y;\n\n    return [nct1, nct2];\n  }\n  return undefined;\n};\n\n/**\n*\n*/\nexport class Segment {\n  /**\n  * @param {Integer} index\n  * @param {SVGPathSeg} item\n  * @todo Is `item` be more constrained here?\n  */\n  constructor (index, item) {\n    this.selected = false;\n    this.index = index;\n    this.item = item;\n    this.type = item.pathSegType;\n\n    this.ctrlpts = [];\n    this.ptgrip = null;\n    this.segsel = null;\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  showCtrlPts (y) {\n    for (const i in this.ctrlpts) {\n      if ({}.hasOwnProperty.call(this.ctrlpts, i)) {\n        this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');\n      }\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  selectCtrls (y) {\n    $('#ctrlpointgrip_' + this.index + 'c1, #ctrlpointgrip_' + this.index + 'c2')\n      .attr('fill', y ? '#0FF' : '#EEE');\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  show (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('display', y ? 'inline' : 'none');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      // Show/hide all control points if available\n      this.showCtrlPts(y);\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  select (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('stroke', y ? '#0FF' : '#00F');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      if (this.ctrlpts) {\n        this.selectCtrls(y);\n      }\n      this.selected = y;\n    }\n  }\n\n  /**\n   * @returns {undefined}\n   */\n  addGrip () {\n    this.ptgrip = getPointGrip(this, true);\n    this.ctrlpts = getControlPoints(this); // , true);\n    this.segsel = getSegSelector(this, true);\n  }\n\n  /**\n   * @param {boolean} full\n   * @returns {undefined}\n   */\n  update (full) {\n    if (this.ptgrip) {\n      const pt = getGripPt(this);\n      assignAttributes(this.ptgrip, {\n        cx: pt.x,\n        cy: pt.y\n      });\n\n      getSegSelector(this, true);\n\n      if (this.ctrlpts) {\n        if (full) {\n          this.item = path.elem.pathSegList.getItem(this.index);\n          this.type = this.item.pathSegType;\n        }\n        getControlPoints(this);\n      }\n      // this.segsel.setAttribute('display', y ? 'inline' : 'none');\n    }\n  }\n\n  /**\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  move (dx, dy) {\n    const {item} = this;\n\n    const curPts = this.ctrlpts\n      ? [\n        item.x += dx, item.y += dy,\n        item.x1, item.y1, item.x2 += dx, item.y2 += dy\n      ]\n      : [item.x += dx, item.y += dy];\n\n    replacePathSeg(this.type, this.index, curPts);\n\n    if (this.next && this.next.ctrlpts) {\n      const next = this.next.item;\n      const nextPts = [\n        next.x, next.y,\n        next.x1 += dx, next.y1 += dy, next.x2, next.y2\n      ];\n      replacePathSeg(this.next.type, this.next.index, nextPts);\n    }\n\n    if (this.mate) {\n      // The last point of a closed subpath has a 'mate',\n      // which is the 'M' segment of the subpath\n      const {item: itm} = this.mate;\n      const pts = [itm.x += dx, itm.y += dy];\n      replacePathSeg(this.mate.type, this.mate.index, pts);\n      // Has no grip, so does not need 'updating'?\n    }\n\n    this.update(true);\n    if (this.next) { this.next.update(true); }\n  }\n\n  /**\n   * @param {Integer} num\n   * @returns {undefined}\n   */\n  setLinked (num) {\n    let seg, anum, pt;\n    if (num === 2) {\n      anum = 1;\n      seg = this.next;\n      if (!seg) { return; }\n      pt = this.item;\n    } else {\n      anum = 2;\n      seg = this.prev;\n      if (!seg) { return; }\n      pt = seg.item;\n    }\n\n    const {item} = seg;\n    item['x' + anum] = pt.x + (pt.x - this.item['x' + num]);\n    item['y' + anum] = pt.y + (pt.y - this.item['y' + num]);\n\n    const pts = [\n      item.x, item.y,\n      item.x1, item.y1,\n      item.x2, item.y2\n    ];\n\n    replacePathSeg(seg.type, seg.index, pts);\n    seg.update(true);\n  }\n\n  /**\n   * @param {Integer} num\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  moveCtrl (num, dx, dy) {\n    const {item} = this;\n    item['x' + num] += dx;\n    item['y' + num] += dy;\n\n    const pts = [\n      item.x, item.y,\n      item.x1, item.y1, item.x2, item.y2\n    ];\n\n    replacePathSeg(this.type, this.index, pts);\n    this.update(true);\n  }\n\n  /**\n   * @param {Integer} newType Possible values set during {@link module:path.init}\n   * @param {ArgumentsArray} pts\n   * @returns {undefined}\n   */\n  setType (newType, pts) {\n    replacePathSeg(newType, this.index, pts);\n    this.type = newType;\n    this.item = path.elem.pathSegList.getItem(this.index);\n    this.showCtrlPts(newType === 6);\n    this.ctrlpts = getControlPoints(this);\n    this.update(true);\n  }\n}\n\n/**\n*\n*/\nexport class Path {\n  /**\n  * @param {SVGPathElement} elem\n  * @throws {Error} If constructed without a path element\n  */\n  constructor (elem) {\n    if (!elem || elem.tagName !== 'path') {\n      throw new Error('svgedit.path.Path constructed without a <path> element');\n    }\n\n    this.elem = elem;\n    this.segs = [];\n    this.selected_pts = [];\n    path = this; // eslint-disable-line consistent-this\n\n    this.init();\n  }\n\n  /**\n  * Reset path data.\n  * @returns {module:path.Path}\n  */\n  init () {\n    // Hide all grips, etc\n\n    // fixed, needed to work on all found elements, not just first\n    $(getGripContainer()).find('*').each(function () {\n      $(this).attr('display', 'none');\n    });\n\n    const segList = this.elem.pathSegList;\n    const len = segList.numberOfItems;\n    this.segs = [];\n    this.selected_pts = [];\n    this.first_seg = null;\n\n    // Set up segs array\n    for (let i = 0; i < len; i++) {\n      const item = segList.getItem(i);\n      const segment = new Segment(i, item);\n      segment.path = this;\n      this.segs.push(segment);\n    }\n\n    const {segs} = this;\n\n    let startI = null;\n    for (let i = 0; i < len; i++) {\n      const seg = segs[i];\n      const nextSeg = (i + 1) >= len ? null : segs[i + 1];\n      const prevSeg = (i - 1) < 0 ? null : segs[i - 1];\n      if (seg.type === 2) {\n        if (prevSeg && prevSeg.type !== 1) {\n          // New sub-path, last one is open,\n          // so add a grip to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n        }\n        // Remember that this is a starter seg\n        startI = i;\n      } else if (nextSeg && nextSeg.type === 1) {\n        // This is the last real segment of a closed sub-path\n        // Next is first seg after \"M\"\n        seg.next = segs[startI + 1];\n\n        // First seg after \"M\"'s prev is this\n        seg.next.prev = seg;\n        seg.mate = segs[startI];\n        seg.addGrip();\n        if (isNullish(this.first_seg)) {\n          this.first_seg = seg;\n        }\n      } else if (!nextSeg) {\n        if (seg.type !== 1) {\n          // Last seg, doesn't close so add a grip\n          // to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n          seg.addGrip();\n\n          if (!this.first_seg) {\n            // Open path, so set first as real first and add grip\n            this.first_seg = segs[startI];\n          }\n        }\n      } else if (seg.type !== 1) {\n        // Regular segment, so add grip and its \"next\"\n        seg.addGrip();\n\n        // Don't set its \"next\" if it's an \"M\"\n        if (nextSeg && nextSeg.type !== 2) {\n          seg.next = nextSeg;\n          seg.next.prev = seg;\n        }\n      }\n    }\n    return this;\n  }\n\n  /**\n  * @callback module:path.PathEachSegCallback\n  * @this module:path.Segment\n  * @param {Integer} i The index of the seg being iterated\n  * @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`\n  */\n  /**\n  * @param {module:path.PathEachSegCallback} fn\n  * @returns {undefined}\n  */\n  eachSeg (fn) {\n    const len = this.segs.length;\n    for (let i = 0; i < len; i++) {\n      const ret = fn.call(this.segs[i], i);\n      if (ret === false) { break; }\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  addSeg (index) {\n    // Adds a new segment\n    const seg = this.segs[index];\n    if (!seg.prev) { return; }\n\n    const {prev} = seg;\n    let newseg, newX, newY;\n    switch (seg.item.pathSegType) {\n    case 4: {\n      newX = (seg.item.x + prev.item.x) / 2;\n      newY = (seg.item.y + prev.item.y) / 2;\n      newseg = this.elem.createSVGPathSegLinetoAbs(newX, newY);\n      break;\n    } case 6: { // make it a curved segment to preserve the shape (WRS)\n      // https://en.wikipedia.org/wiki/De_Casteljau%27s_algorithm#Geometric_interpretation\n      const p0x = (prev.item.x + seg.item.x1) / 2;\n      const p1x = (seg.item.x1 + seg.item.x2) / 2;\n      const p2x = (seg.item.x2 + seg.item.x) / 2;\n      const p01x = (p0x + p1x) / 2;\n      const p12x = (p1x + p2x) / 2;\n      newX = (p01x + p12x) / 2;\n      const p0y = (prev.item.y + seg.item.y1) / 2;\n      const p1y = (seg.item.y1 + seg.item.y2) / 2;\n      const p2y = (seg.item.y2 + seg.item.y) / 2;\n      const p01y = (p0y + p1y) / 2;\n      const p12y = (p1y + p2y) / 2;\n      newY = (p01y + p12y) / 2;\n      newseg = this.elem.createSVGPathSegCurvetoCubicAbs(newX, newY, p0x, p0y, p01x, p01y);\n      const pts = [seg.item.x, seg.item.y, p12x, p12y, p2x, p2y];\n      replacePathSeg(seg.type, index, pts);\n      break;\n    }\n    }\n\n    insertItemBefore(this.elem, newseg, index);\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  deleteSeg (index) {\n    const seg = this.segs[index];\n    const list = this.elem.pathSegList;\n\n    seg.show(false);\n    const {next} = seg;\n    if (seg.mate) {\n      // Make the next point be the \"M\" point\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, next.index, pt);\n\n      // Reposition last node\n      replacePathSeg(4, seg.index, pt);\n\n      list.removeItem(seg.mate.index);\n    } else if (!seg.prev) {\n      // First node of open path, make next point the M\n      // const {item} = seg;\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, seg.next.index, pt);\n      list.removeItem(index);\n    } else {\n      list.removeItem(index);\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  removePtFromSelection (index) {\n    const pos = this.selected_pts.indexOf(index);\n    if (pos === -1) {\n      return;\n    }\n    this.segs[index].select(false);\n    this.selected_pts.splice(pos, 1);\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  clearSelection () {\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.select(false);\n    });\n    this.selected_pts = [];\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  storeD () {\n    this.last_d = this.elem.getAttribute('d');\n  }\n\n  /**\n  * @param {Integer} y\n  * @returns {undefined}\n  */\n  show (y) {\n    // Shows this path's segment grips\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.show(y);\n    });\n    if (y) {\n      this.selectPt(this.first_seg.index);\n    }\n    return this;\n  }\n\n  /**\n  * Move selected points.\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  movePts (dx, dy) {\n    let i = this.selected_pts.length;\n    while (i--) {\n      const seg = this.segs[this.selected_pts[i]];\n      seg.move(dx, dy);\n    }\n  }\n\n  /**\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  moveCtrl (dx, dy) {\n    const seg = this.segs[this.selected_pts[0]];\n    seg.moveCtrl(this.dragctrl, dx, dy);\n    if (linkControlPts) {\n      seg.setLinked(this.dragctrl);\n    }\n  }\n\n  /**\n  * @param {?Integer} newType See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n  * @returns {undefined}\n  */\n  setSegType (newType) {\n    this.storeD();\n    let i = this.selected_pts.length;\n    let text;\n    while (i--) {\n      const selPt = this.selected_pts[i];\n\n      // Selected seg\n      const cur = this.segs[selPt];\n      const {prev} = cur;\n      if (!prev) { continue; }\n\n      if (!newType) { // double-click, so just toggle\n        text = 'Toggle Path Segment Type';\n\n        // Toggle segment to curve/straight line\n        const oldType = cur.type;\n\n        newType = (oldType === 6) ? 4 : 6;\n      }\n\n      newType = Number(newType);\n\n      const curX = cur.item.x;\n      const curY = cur.item.y;\n      const prevX = prev.item.x;\n      const prevY = prev.item.y;\n      let points;\n      switch (newType) {\n      case 6: {\n        if (cur.olditem) {\n          const old = cur.olditem;\n          points = [curX, curY, old.x1, old.y1, old.x2, old.y2];\n        } else {\n          const diffX = curX - prevX;\n          const diffY = curY - prevY;\n          // get control points from straight line segment\n          /*\n          const ct1x = (prevX + (diffY/2));\n          const ct1y = (prevY - (diffX/2));\n          const ct2x = (curX + (diffY/2));\n          const ct2y = (curY - (diffX/2));\n          */\n          // create control points on the line to preserve the shape (WRS)\n          const ct1x = (prevX + (diffX / 3));\n          const ct1y = (prevY + (diffY / 3));\n          const ct2x = (curX - (diffX / 3));\n          const ct2y = (curY - (diffY / 3));\n          points = [curX, curY, ct1x, ct1y, ct2x, ct2y];\n        }\n        break;\n      } case 4: {\n        points = [curX, curY];\n\n        // Store original prevve segment nums\n        cur.olditem = cur.item;\n        break;\n      }\n      }\n\n      cur.setType(newType, points);\n    }\n    path.endChanges(text);\n  }\n\n  /**\n  * @param {Integer} pt\n  * @param {Integer} ctrlNum\n  * @returns {undefined}\n  */\n  selectPt (pt, ctrlNum) {\n    this.clearSelection();\n    if (isNullish(pt)) {\n      this.eachSeg(function (i) {\n        // 'this' is the segment here.\n        if (this.prev) {\n          pt = i;\n        }\n      });\n    }\n    this.addPtsToSelection(pt);\n    if (ctrlNum) {\n      this.dragctrl = ctrlNum;\n\n      if (linkControlPts) {\n        this.segs[pt].setLinked(ctrlNum);\n      }\n    }\n  }\n\n  /**\n  * Update position of all points.\n  * @returns {Path}\n  */\n  update () {\n    const {elem} = this;\n    if (getRotationAngle(elem)) {\n      this.matrix = getMatrix(elem);\n      this.imatrix = this.matrix.inverse();\n    } else {\n      this.matrix = null;\n      this.imatrix = null;\n    }\n\n    this.eachSeg(function (i) {\n      this.item = elem.pathSegList.getItem(i);\n      this.update();\n    });\n\n    return this;\n  }\n\n  /**\n  * @param {string} text\n  * @returns {undefined}\n  */\n  endChanges (text) {\n    if (isWebkit()) { editorContext_.resetD(this.elem); }\n    const cmd = new ChangeElementCommand(this.elem, {d: this.last_d}, text);\n    editorContext_.endChanges({cmd, elem: this.elem});\n  }\n\n  /**\n  * @param {Integer|Integer[]} indexes\n  * @returns {undefined}\n  */\n  addPtsToSelection (indexes) {\n    if (!Array.isArray(indexes)) { indexes = [indexes]; }\n    for (let i = 0; i < indexes.length; i++) {\n      const index = indexes[i];\n      const seg = this.segs[index];\n      if (seg.ptgrip) {\n        if (!this.selected_pts.includes(index) && index >= 0) {\n          this.selected_pts.push(index);\n        }\n      }\n    }\n    this.selected_pts.sort();\n    let i = this.selected_pts.length;\n    const grips = [];\n    grips.length = i;\n    // Loop through points to be selected and highlight each\n    while (i--) {\n      const pt = this.selected_pts[i];\n      const seg = this.segs[pt];\n      seg.select(true);\n      grips[i] = seg.ptgrip;\n    }\n\n    const closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);\n    editorContext_.addPtsToSelection({grips, closedSubpath});\n  }\n}\n\n/**\n* @param {Integer} index\n* @returns {boolean}\n*/\nPath.subpathIsClosed = function (index) {\n  let clsd = false;\n  // Check if subpath is already open\n  path.eachSeg(function (i) {\n    if (i <= index) { return true; }\n    if (this.type === 2) {\n      // Found M first, so open\n      return false;\n    }\n    if (this.type === 1) {\n      // Found Z first, so closed\n      clsd = true;\n      return false;\n    }\n    return true;\n  });\n\n  return clsd;\n};\n\n/**\n* @function module:path.getPath_\n* @param {SVGPathElement} elem\n* @returns {module:path.Path}\n*/\nexport const getPath_ = function (elem) {\n  let p = pathData[elem.id];\n  if (!p) {\n    p = pathData[elem.id] = new Path(elem);\n  }\n  return p;\n};\n\n/**\n* @function module:path.removePath_\n* @param {string} id\n* @returns {undefined}\n*/\nexport const removePath_ = function (id) {\n  if (id in pathData) { delete pathData[id]; }\n};\n\nlet newcx, newcy, oldcx, oldcy, angle;\n\nconst getRotVals = function (x, y) {\n  let dx = x - oldcx;\n  let dy = y - oldcy;\n\n  // rotate the point around the old center\n  let r = Math.sqrt(dx * dx + dy * dy);\n  let theta = Math.atan2(dy, dx) + angle;\n  dx = r * Math.cos(theta) + oldcx;\n  dy = r * Math.sin(theta) + oldcy;\n\n  // dx,dy should now hold the actual coordinates of each\n  // point after being rotated\n\n  // now we want to rotate them around the new center in the reverse direction\n  dx -= newcx;\n  dy -= newcy;\n\n  r = Math.sqrt(dx * dx + dy * dy);\n  theta = Math.atan2(dy, dx) - angle;\n\n  return {x: r * Math.cos(theta) + newcx,\n    y: r * Math.sin(theta) + newcy};\n};\n\n// If the path was rotated, we must now pay the piper:\n// Every path point must be rotated into the rotated coordinate system of\n// its old center, then determine the new center, then rotate it back\n// This is because we want the path to remember its rotation\n\n/**\n* @function module:path.recalcRotatedPath\n* @todo This is still using ye olde transform methods, can probably\n* be optimized or even taken care of by `recalculateDimensions`\n* @returns {undefined}\n*/\nexport const recalcRotatedPath = function () {\n  const currentPath = path.elem;\n  angle = getRotationAngle(currentPath, true);\n  if (!angle) { return; }\n  // selectedBBoxes[0] = path.oldbbox;\n  const oldbox = path.oldbbox; // selectedBBoxes[0],\n  oldcx = oldbox.x + oldbox.width / 2;\n  oldcy = oldbox.y + oldbox.height / 2;\n  const box = getBBox(currentPath);\n  newcx = box.x + box.width / 2;\n  newcy = box.y + box.height / 2;\n\n  // un-rotate the new center to the proper position\n  const dx = newcx - oldcx,\n    dy = newcy - oldcy,\n    r = Math.sqrt(dx * dx + dy * dy),\n    theta = Math.atan2(dy, dx) + angle;\n\n  newcx = r * Math.cos(theta) + oldcx;\n  newcy = r * Math.sin(theta) + oldcy;\n\n  const list = currentPath.pathSegList;\n\n  let i = list.numberOfItems;\n  while (i) {\n    i -= 1;\n    const seg = list.getItem(i),\n      type = seg.pathSegType;\n    if (type === 1) { continue; }\n\n    const rvals = getRotVals(seg.x, seg.y),\n      points = [rvals.x, rvals.y];\n    if (!isNullish(seg.x1) && !isNullish(seg.x2)) {\n      const cVals1 = getRotVals(seg.x1, seg.y1);\n      const cVals2 = getRotVals(seg.x2, seg.y2);\n      points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);\n    }\n    replacePathSeg(type, i, points);\n  } // loop for each point\n\n  /* box = */ getBBox(currentPath);\n  // selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;\n  // selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;\n\n  // now we must set the new transform to be rotated around the new center\n  const Rnc = editorContext_.getSVGRoot().createSVGTransform(),\n    tlist = getTransformList(currentPath);\n  Rnc.setRotate((angle * 180.0 / Math.PI), newcx, newcy);\n  tlist.replaceItem(Rnc, 0);\n};\n\n// ====================================\n// Public API starts here\n\n/**\n* @function module:path.clearData\n* @returns {undefined}\n*/\nexport const clearData = function () {\n  pathData = {};\n};\n\n// Making public for mocking\n/**\n* @function module:path.reorientGrads\n* @param {Element} elem\n* @param {SVGMatrix} m\n* @returns {undefined}\n*/\nexport const reorientGrads = function (elem, m) {\n  const bb = utilsGetBBox(elem);\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = elem.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      const grad = getRefElem(attrVal);\n      if (grad.tagName === 'linearGradient') {\n        let x1 = grad.getAttribute('x1') || 0;\n        let y1 = grad.getAttribute('y1') || 0;\n        let x2 = grad.getAttribute('x2') || 1;\n        let y2 = grad.getAttribute('y2') || 0;\n\n        // Convert to USOU points\n        x1 = (bb.width * x1) + bb.x;\n        y1 = (bb.height * y1) + bb.y;\n        x2 = (bb.width * x2) + bb.x;\n        y2 = (bb.height * y2) + bb.y;\n\n        // Transform those points\n        const pt1 = transformPoint(x1, y1, m);\n        const pt2 = transformPoint(x2, y2, m);\n\n        // Convert back to BB points\n        const gCoords = {};\n\n        gCoords.x1 = (pt1.x - bb.x) / bb.width;\n        gCoords.y1 = (pt1.y - bb.y) / bb.height;\n        gCoords.x2 = (pt2.x - bb.x) / bb.width;\n        gCoords.y2 = (pt2.y - bb.y) / bb.height;\n\n        const newgrad = grad.cloneNode(true);\n        $(newgrad).attr(gCoords);\n\n        newgrad.id = editorContext_.getNextId();\n        findDefs().append(newgrad);\n        elem.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n    }\n  }\n};\n\n/**\n* This is how we map paths to our preferred relative segment types\n* @name module:path.pathMap\n* @type {GenericArray}\n*/\nconst pathMap = [\n  0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'\n];\n\n/**\n * Convert a path to one with only absolute or relative values.\n * @todo move to pathActions.js\n * @function module:path.convertPath\n * @param {SVGPathElement} pth - the path to convert\n * @param {boolean} toRel - true of convert to relative\n * @returns {string}\n */\nexport const convertPath = function (pth, toRel) {\n  const {pathSegList} = pth;\n  const len = pathSegList.numberOfItems;\n  let curx = 0, cury = 0;\n  let d = '';\n  let lastM = null;\n\n  for (let i = 0; i < len; ++i) {\n    const seg = pathSegList.getItem(i);\n    // if these properties are not in the segment, set them to zero\n    let x = seg.x || 0,\n      y = seg.y || 0,\n      x1 = seg.x1 || 0,\n      y1 = seg.y1 || 0,\n      x2 = seg.x2 || 0,\n      y2 = seg.y2 || 0;\n\n    const type = seg.pathSegType;\n    let letter = pathMap[type]['to' + (toRel ? 'Lower' : 'Upper') + 'Case']();\n\n    switch (type) {\n    case 1: // z,Z closepath (Z/z)\n      d += 'z';\n      if (lastM && !toRel) {\n        curx = lastM[0];\n        cury = lastM[1];\n      }\n      break;\n    case 12: // absolute horizontal line (H)\n      x -= curx;\n      // Fallthrough\n    case 13: // relative horizontal line (h)\n      if (toRel) {\n        curx += x;\n        letter = 'l';\n      } else {\n        x += curx;\n        curx = x;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[x, cury]]);\n      break;\n    case 14: // absolute vertical line (V)\n      y -= cury;\n      // Fallthrough\n    case 15: // relative vertical line (v)\n      if (toRel) {\n        cury += y;\n        letter = 'l';\n      } else {\n        y += cury;\n        cury = y;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[curx, y]]);\n      break;\n    case 2: // absolute move (M)\n    case 4: // absolute line (L)\n    case 18: // absolute smooth quad (T)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 5: // relative line (l)\n    case 3: // relative move (m)\n    case 19: // relative smooth quad (t)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      if (type === 2 || type === 3) { lastM = [curx, cury]; }\n\n      d += pathDSegment(letter, [[x, y]]);\n      break;\n    case 6: // absolute cubic (C)\n      x -= curx; x1 -= curx; x2 -= curx;\n      y -= cury; y1 -= cury; y2 -= cury;\n      // Fallthrough\n    case 7: // relative cubic (c)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx; x2 += curx;\n        y += cury; y1 += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x2, y2], [x, y]]);\n      break;\n    case 8: // absolute quad (Q)\n      x -= curx; x1 -= curx;\n      y -= cury; y1 -= cury;\n      // Fallthrough\n    case 9: // relative quad (q)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx;\n        y += cury; y1 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x, y]]);\n      break;\n    case 10: // absolute elliptical arc (A)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 11: // relative elliptical arc (a)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[seg.r1, seg.r2]], [\n        seg.angle,\n        (seg.largeArcFlag ? 1 : 0),\n        (seg.sweepFlag ? 1 : 0)\n      ], [x, y]);\n      break;\n    case 16: // absolute smooth cubic (S)\n      x -= curx; x2 -= curx;\n      y -= cury; y2 -= cury;\n      // Fallthrough\n    case 17: // relative smooth cubic (s)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x2 += curx;\n        y += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x2, y2], [x, y]]);\n      break;\n    } // switch on path segment type\n  } // for each segment\n  return d;\n};\n\n/**\n * TODO: refactor callers in `convertPath` to use `getPathDFromSegments` instead of this function.\n * Legacy code refactored from `svgcanvas.pathActions.convertPath`.\n * @param {string} letter - path segment command (letter in potentially either case from {@link module:path.pathMap}; see [SVGPathSeg#pathSegTypeAsLetter]{@link https://www.w3.org/TR/SVG/single-page.html#paths-__svg__SVGPathSeg__pathSegTypeAsLetter})\n * @param {GenericArray<GenericArray<Integer>>} points - x,y points\n * @param {GenericArray<GenericArray<Integer>>} [morePoints] - x,y points\n * @param {Integer[]} [lastPoint] - x,y point\n * @returns {string}\n */\nfunction pathDSegment (letter, points, morePoints, lastPoint) {\n  $.each(points, function (i, pnt) {\n    points[i] = shortFloat(pnt);\n  });\n  let segment = letter + points.join(' ');\n  if (morePoints) {\n    segment += ' ' + morePoints.join(' ');\n  }\n  if (lastPoint) {\n    segment += ' ' + shortFloat(lastPoint);\n  }\n  return segment;\n}\n\n/**\n* Group: Path edit functions\n* Functions relating to editing path elements\n* @namespace {PlainObject} pathActions\n* @memberof module:path\n*/\nexport const pathActions = (function () {\n  let subpath = false;\n  let newPoint, firstCtrl;\n\n  let currentPath = null;\n  let hasMoved = false;\n  // No `editorContext_` yet but should be ok as is `null` by default\n  // editorContext_.setDrawnPath(null);\n\n  /**\n  * This function converts a polyline (created by the fh_path tool) into\n  * a path element and coverts every three line segments into a single bezier\n  * curve in an attempt to smooth out the free-hand.\n  * @function smoothPolylineIntoPath\n  * @param {Element} element\n  * @returns {Element}\n  */\n  const smoothPolylineIntoPath = function (element) {\n    let i;\n    const {points} = element;\n    const N = points.numberOfItems;\n    if (N >= 4) {\n      // loop through every 3 points and convert to a cubic bezier curve segment\n      //\n      // NOTE: this is cheating, it means that every 3 points has the potential to\n      // be a corner instead of treating each point in an equal manner. In general,\n      // this technique does not look that good.\n      //\n      // I am open to better ideas!\n      //\n      // Reading:\n      // - http://www.efg2.com/Lab/Graphics/Jean-YvesQueinecBezierCurves.htm\n      // - https://www.codeproject.com/KB/graphics/BezierSpline.aspx?msg=2956963\n      // - https://www.ian-ko.com/ET_GeoWizards/UserGuide/smooth.htm\n      // - https://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html\n      let curpos = points.getItem(0), prevCtlPt = null;\n      let d = [];\n      d.push(['M', curpos.x, ',', curpos.y, ' C'].join(''));\n      for (i = 1; i <= (N - 4); i += 3) {\n        let ct1 = points.getItem(i);\n        const ct2 = points.getItem(i + 1);\n        const end = points.getItem(i + 2);\n\n        // if the previous segment had a control point, we want to smooth out\n        // the control points on both sides\n        if (prevCtlPt) {\n          const newpts = smoothControlPoints(prevCtlPt, ct1, curpos);\n          if (newpts && newpts.length === 2) {\n            const prevArr = d[d.length - 1].split(',');\n            prevArr[2] = newpts[0].x;\n            prevArr[3] = newpts[0].y;\n            d[d.length - 1] = prevArr.join(',');\n            ct1 = newpts[1];\n          }\n        }\n\n        d.push([ct1.x, ct1.y, ct2.x, ct2.y, end.x, end.y].join(','));\n\n        curpos = end;\n        prevCtlPt = ct2;\n      }\n      // handle remaining line segments\n      d.push('L');\n      while (i < N) {\n        const pt = points.getItem(i);\n        d.push([pt.x, pt.y].join(','));\n        i++;\n      }\n      d = d.join(' ');\n\n      // create new path element\n      element = editorContext_.addSVGElementFromJson({\n        element: 'path',\n        curStyles: true,\n        attr: {\n          id: editorContext_.getId(),\n          d,\n          fill: 'none'\n        }\n      });\n      // No need to call \"changed\", as this is already done under mouseUp\n    }\n    return element;\n  };\n\n  return (/** @lends module:path.pathActions */ {\n    /**\n    * @param {MouseEvent} evt\n    * @param {Element} mouseTarget\n    * @param {Float} startX\n    * @param {Float} startY\n    * @returns {boolean|undefined}\n    */\n    mouseDown (evt, mouseTarget, startX, startY) {\n      let id;\n      if (editorContext_.getCurrentMode() === 'path') {\n        let mouseX = startX; // Was this meant to work with the other `mouseX`? (was defined globally so adding `let` to at least avoid a global)\n        let mouseY = startY; // Was this meant to work with the other `mouseY`? (was defined globally so adding `let` to at least avoid a global)\n\n        const currentZoom = editorContext_.getCurrentZoom();\n        let x = mouseX / currentZoom,\n          y = mouseY / currentZoom,\n          stretchy = getElem('path_stretch_line');\n        newPoint = [x, y];\n\n        if (editorContext_.getGridSnapping()) {\n          x = snapToGrid(x);\n          y = snapToGrid(y);\n          mouseX = snapToGrid(mouseX);\n          mouseY = snapToGrid(mouseY);\n        }\n\n        if (!stretchy) {\n          stretchy = document.createElementNS(NS.SVG, 'path');\n          assignAttributes(stretchy, {\n            id: 'path_stretch_line',\n            stroke: '#22C',\n            'stroke-width': '0.5',\n            fill: 'none'\n          });\n          stretchy = getElem('selectorParentGroup').appendChild(stretchy);\n        }\n        stretchy.setAttribute('display', 'inline');\n\n        let keep = null;\n        let index;\n        // if pts array is empty, create path element with M at current point\n        const drawnPath = editorContext_.getDrawnPath();\n        if (!drawnPath) {\n          const dAttr = 'M' + x + ',' + y + ' '; // Was this meant to work with the other `dAttr`? (was defined globally so adding `var` to at least avoid a global)\n          /* drawnPath = */ editorContext_.setDrawnPath(editorContext_.addSVGElementFromJson({\n            element: 'path',\n            curStyles: true,\n            attr: {\n              d: dAttr,\n              id: editorContext_.getNextId(),\n              opacity: editorContext_.getOpacity() / 2\n            }\n          }));\n          // set stretchy line to first point\n          stretchy.setAttribute('d', ['M', mouseX, mouseY, mouseX, mouseY].join(' '));\n          index = subpath ? path.segs.length : 0;\n          addPointGrip(index, mouseX, mouseY);\n        } else {\n          // determine if we clicked on an existing point\n          const seglist = drawnPath.pathSegList;\n          let i = seglist.numberOfItems;\n          const FUZZ = 6 / currentZoom;\n          let clickOnPoint = false;\n          while (i) {\n            i--;\n            const item = seglist.getItem(i);\n            const px = item.x, py = item.y;\n            // found a matching point\n            if (x >= (px - FUZZ) && x <= (px + FUZZ) &&\n              y >= (py - FUZZ) && y <= (py + FUZZ)\n            ) {\n              clickOnPoint = true;\n              break;\n            }\n          }\n\n          // get path element that we are in the process of creating\n          id = editorContext_.getId();\n\n          // Remove previous path object if previously created\n          removePath_(id);\n\n          const newpath = getElem(id);\n          let newseg;\n          let sSeg;\n          const len = seglist.numberOfItems;\n          // if we clicked on an existing point, then we are done this path, commit it\n          // (i, i+1) are the x,y that were clicked on\n          if (clickOnPoint) {\n            // if clicked on any other point but the first OR\n            // the first point was clicked on and there are less than 3 points\n            // then leave the path open\n            // otherwise, close the path\n            if (i <= 1 && len >= 2) {\n              // Create end segment\n              const absX = seglist.getItem(0).x;\n              const absY = seglist.getItem(0).y;\n\n              sSeg = stretchy.pathSegList.getItem(1);\n              if (sSeg.pathSegType === 4) {\n                newseg = drawnPath.createSVGPathSegLinetoAbs(absX, absY);\n              } else {\n                newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                  absX,\n                  absY,\n                  sSeg.x1 / currentZoom,\n                  sSeg.y1 / currentZoom,\n                  absX,\n                  absY\n                );\n              }\n\n              const endseg = drawnPath.createSVGPathSegClosePath();\n              seglist.appendItem(newseg);\n              seglist.appendItem(endseg);\n            } else if (len < 3) {\n              keep = false;\n              return keep;\n            }\n            $(stretchy).remove();\n\n            // This will signal to commit the path\n            // const element = newpath; // Other event handlers define own `element`, so this was probably not meant to interact with them or one which shares state (as there were none); I therefore adding a missing `var` to avoid a global\n            /* drawnPath = */ editorContext_.setDrawnPath(null);\n            editorContext_.setStarted(false);\n\n            if (subpath) {\n              if (path.matrix) {\n                editorContext_.remapElement(newpath, {}, path.matrix.inverse());\n              }\n\n              const newD = newpath.getAttribute('d');\n              const origD = $(path.elem).attr('d');\n              $(path.elem).attr('d', origD + newD);\n              $(newpath).remove();\n              if (path.matrix) {\n                recalcRotatedPath();\n              }\n              init();\n              pathActions.toEditMode(path.elem);\n              path.selectPt();\n              return false;\n            }\n          // else, create a new point, update path element\n          } else {\n            // Checks if current target or parents are #svgcontent\n            if (!$.contains(\n              editorContext_.getContainer(),\n              editorContext_.getMouseTarget(evt)\n            )) {\n              // Clicked outside canvas, so don't make point\n              // console.log('Clicked outside canvas');\n              return false;\n            }\n\n            const num = drawnPath.pathSegList.numberOfItems;\n            const last = drawnPath.pathSegList.getItem(num - 1);\n            const lastx = last.x, lasty = last.y;\n\n            if (evt.shiftKey) {\n              const xya = snapToAngle(lastx, lasty, x, y);\n              ({x, y} = xya);\n            }\n\n            // Use the segment defined by stretchy\n            sSeg = stretchy.pathSegList.getItem(1);\n            if (sSeg.pathSegType === 4) {\n              newseg = drawnPath.createSVGPathSegLinetoAbs(\n                editorContext_.round(x),\n                editorContext_.round(y)\n              );\n            } else {\n              newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                editorContext_.round(x),\n                editorContext_.round(y),\n                sSeg.x1 / currentZoom,\n                sSeg.y1 / currentZoom,\n                sSeg.x2 / currentZoom,\n                sSeg.y2 / currentZoom\n              );\n            }\n\n            drawnPath.pathSegList.appendItem(newseg);\n\n            x *= currentZoom;\n            y *= currentZoom;\n\n            // set stretchy line to latest point\n            stretchy.setAttribute('d', ['M', x, y, x, y].join(' '));\n            index = num;\n            if (subpath) { index += path.segs.length; }\n            addPointGrip(index, x, y);\n          }\n          // keep = true;\n        }\n\n        return undefined;\n      }\n\n      // TODO: Make sure currentPath isn't null at this point\n      if (!path) { return undefined; }\n\n      path.storeD();\n\n      ({id} = evt.target);\n      let curPt;\n      if (id.substr(0, 14) === 'pathpointgrip_') {\n        // Select this point\n        curPt = path.cur_pt = parseInt(id.substr(14));\n        path.dragging = [startX, startY];\n        const seg = path.segs[curPt];\n\n        // only clear selection if shift is not pressed (otherwise, add\n        // node to selection)\n        if (!evt.shiftKey) {\n          if (path.selected_pts.length <= 1 || !seg.selected) {\n            path.clearSelection();\n          }\n          path.addPtsToSelection(curPt);\n        } else if (seg.selected) {\n          path.removePtFromSelection(curPt);\n        } else {\n          path.addPtsToSelection(curPt);\n        }\n      } else if (id.startsWith('ctrlpointgrip_')) {\n        path.dragging = [startX, startY];\n\n        const parts = id.split('_')[1].split('c');\n        curPt = Number(parts[0]);\n        const ctrlNum = Number(parts[1]);\n        path.selectPt(curPt, ctrlNum);\n      }\n\n      // Start selection box\n      if (!path.dragging) {\n        let rubberBox = editorContext_.getRubberBox();\n        if (isNullish(rubberBox)) {\n          rubberBox = editorContext_.setRubberBox(\n            editorContext_.selectorManager.getRubberBandBox()\n          );\n        }\n        const currentZoom = editorContext_.getCurrentZoom();\n        assignAttributes(rubberBox, {\n          x: startX * currentZoom,\n          y: startY * currentZoom,\n          width: 0,\n          height: 0,\n          display: 'inline'\n        }, 100);\n      }\n      return undefined;\n    },\n    /**\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {undefined}\n    */\n    mouseMove (mouseX, mouseY) {\n      const currentZoom = editorContext_.getCurrentZoom();\n      hasMoved = true;\n      const drawnPath = editorContext_.getDrawnPath();\n      if (editorContext_.getCurrentMode() === 'path') {\n        if (!drawnPath) { return; }\n        const seglist = drawnPath.pathSegList;\n        const index = seglist.numberOfItems - 1;\n\n        if (newPoint) {\n          // First point\n          // if (!index) { return; }\n\n          // Set control points\n          const pointGrip1 = addCtrlGrip('1c1');\n          const pointGrip2 = addCtrlGrip('0c2');\n\n          // dragging pointGrip1\n          pointGrip1.setAttribute('cx', mouseX);\n          pointGrip1.setAttribute('cy', mouseY);\n          pointGrip1.setAttribute('display', 'inline');\n\n          const ptX = newPoint[0];\n          const ptY = newPoint[1];\n\n          // set curve\n          // const seg = seglist.getItem(index);\n          const curX = mouseX / currentZoom;\n          const curY = mouseY / currentZoom;\n          const altX = (ptX + (ptX - curX));\n          const altY = (ptY + (ptY - curY));\n\n          pointGrip2.setAttribute('cx', altX * currentZoom);\n          pointGrip2.setAttribute('cy', altY * currentZoom);\n          pointGrip2.setAttribute('display', 'inline');\n\n          const ctrlLine = getCtrlLine(1);\n          assignAttributes(ctrlLine, {\n            x1: mouseX,\n            y1: mouseY,\n            x2: altX * currentZoom,\n            y2: altY * currentZoom,\n            display: 'inline'\n          });\n\n          if (index === 0) {\n            firstCtrl = [mouseX, mouseY];\n          } else {\n            const last = seglist.getItem(index - 1);\n            let lastX = last.x;\n            let lastY = last.y;\n\n            if (last.pathSegType === 6) {\n              lastX += (lastX - last.x2);\n              lastY += (lastY - last.y2);\n            } else if (firstCtrl) {\n              lastX = firstCtrl[0] / currentZoom;\n              lastY = firstCtrl[1] / currentZoom;\n            }\n            replacePathSeg(6, index, [ptX, ptY, lastX, lastY, altX, altY], drawnPath);\n          }\n        } else {\n          const stretchy = getElem('path_stretch_line');\n          if (stretchy) {\n            const prev = seglist.getItem(index);\n            if (prev.pathSegType === 6) {\n              const prevX = prev.x + (prev.x - prev.x2);\n              const prevY = prev.y + (prev.y - prev.y2);\n              replacePathSeg(6, 1, [mouseX, mouseY, prevX * currentZoom, prevY * currentZoom, mouseX, mouseY], stretchy);\n            } else if (firstCtrl) {\n              replacePathSeg(6, 1, [mouseX, mouseY, firstCtrl[0], firstCtrl[1], mouseX, mouseY], stretchy);\n            } else {\n              replacePathSeg(4, 1, [mouseX, mouseY], stretchy);\n            }\n          }\n        }\n        return;\n      }\n      // if we are dragging a point, let's move it\n      if (path.dragging) {\n        const pt = getPointFromGrip({\n          x: path.dragging[0],\n          y: path.dragging[1]\n        }, path);\n        const mpt = getPointFromGrip({\n          x: mouseX,\n          y: mouseY\n        }, path);\n        const diffX = mpt.x - pt.x;\n        const diffY = mpt.y - pt.y;\n        path.dragging = [mouseX, mouseY];\n\n        if (path.dragctrl) {\n          path.moveCtrl(diffX, diffY);\n        } else {\n          path.movePts(diffX, diffY);\n        }\n      } else {\n        path.selected_pts = [];\n        path.eachSeg(function (i) {\n          const seg = this; // eslint-disable-line consistent-this\n          if (!seg.next && !seg.prev) { return; }\n\n          // const {item} = seg;\n          const rubberBox = editorContext_.getRubberBox();\n          const rbb = rubberBox.getBBox();\n\n          const pt = getGripPt(seg);\n          const ptBb = {\n            x: pt.x,\n            y: pt.y,\n            width: 0,\n            height: 0\n          };\n\n          const sel = rectsIntersect(rbb, ptBb);\n\n          this.select(sel);\n          // Note that addPtsToSelection is not being run\n          if (sel) { path.selected_pts.push(seg.index); }\n        });\n      }\n    },\n    /**\n     * @typedef module:path.keepElement\n     * @type {PlainObject}\n     * @property {boolean} keep\n     * @property {Element} element\n     */\n    /**\n    * @param {Event} evt\n    * @param {Element} element\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {module:path.keepElement|undefined}\n    */\n    mouseUp (evt, element, mouseX, mouseY) {\n      const drawnPath = editorContext_.getDrawnPath();\n      // Create mode\n      if (editorContext_.getCurrentMode() === 'path') {\n        newPoint = null;\n        if (!drawnPath) {\n          element = getElem(editorContext_.getId());\n          editorContext_.setStarted(false);\n          firstCtrl = null;\n        }\n\n        return {\n          keep: true,\n          element\n        };\n      }\n\n      // Edit mode\n      const rubberBox = editorContext_.getRubberBox();\n      if (path.dragging) {\n        const lastPt = path.cur_pt;\n\n        path.dragging = false;\n        path.dragctrl = false;\n        path.update();\n\n        if (hasMoved) {\n          path.endChanges('Move path point(s)');\n        }\n\n        if (!evt.shiftKey && !hasMoved) {\n          path.selectPt(lastPt);\n        }\n      } else if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n        // Done with multi-node-select\n        rubberBox.setAttribute('display', 'none');\n\n        if (rubberBox.getAttribute('width') <= 2 && rubberBox.getAttribute('height') <= 2) {\n          pathActions.toSelectMode(evt.target);\n        }\n\n      // else, move back to select mode\n      } else {\n        pathActions.toSelectMode(evt.target);\n      }\n      hasMoved = false;\n      return undefined;\n    },\n    /**\n    * @param {Element} element\n    * @returns {undefined}\n    */\n    toEditMode (element) {\n      path = getPath_(element);\n      editorContext_.setCurrentMode('pathedit');\n      editorContext_.clearSelection();\n      path.show(true).update();\n      path.oldbbox = utilsGetBBox(path.elem);\n      subpath = false;\n    },\n    /**\n    * @param {Element} elem\n    * @fires module:svgcanvas.SvgCanvas#event:selected\n    * @returns {undefined}\n    */\n    toSelectMode (elem) {\n      const selPath = (elem === path.elem);\n      editorContext_.setCurrentMode('select');\n      path.show(false);\n      currentPath = false;\n      editorContext_.clearSelection();\n\n      if (path.matrix) {\n        // Rotated, so may need to re-calculate the center\n        recalcRotatedPath();\n      }\n\n      if (selPath) {\n        editorContext_.call('selected', [elem]);\n        editorContext_.addToSelection([elem], true);\n      }\n    },\n    /**\n    * @param {boolean} on\n    * @returns {undefined}\n    */\n    addSubPath (on) {\n      if (on) {\n        // Internally we go into \"path\" mode, but in the UI it will\n        // still appear as if in \"pathedit\" mode.\n        editorContext_.setCurrentMode('path');\n        subpath = true;\n      } else {\n        pathActions.clear(true);\n        pathActions.toEditMode(path.elem);\n      }\n    },\n    /**\n    * @param {Element} target\n    * @returns {undefined}\n    */\n    select (target) {\n      if (currentPath === target) {\n        pathActions.toEditMode(target);\n        editorContext_.setCurrentMode('pathedit');\n      // going into pathedit mode\n      } else {\n        currentPath = target;\n      }\n    },\n    /**\n    * @fires module:svgcanvas.SvgCanvas#event:changed\n    * @returns {undefined}\n    */\n    reorient () {\n      const elem = editorContext_.getSelectedElements()[0];\n      if (!elem) { return; }\n      const angl = getRotationAngle(elem);\n      if (angl === 0) { return; }\n\n      const batchCmd = new BatchCommand('Reorient path');\n      const changes = {\n        d: elem.getAttribute('d'),\n        transform: elem.getAttribute('transform')\n      };\n      batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n      editorContext_.clearSelection();\n      this.resetOrientation(elem);\n\n      editorContext_.addCommandToHistory(batchCmd);\n\n      // Set matrix to null\n      getPath_(elem).show(false).matrix = null;\n\n      this.clear();\n\n      editorContext_.addToSelection([elem], true);\n      editorContext_.call('changed', editorContext_.getSelectedElements());\n    },\n\n    /**\n    * @param {boolean} remove Not in use\n    * @returns {undefined}\n    */\n    clear (remove) {\n      const drawnPath = editorContext_.getDrawnPath();\n      currentPath = null;\n      if (drawnPath) {\n        const elem = getElem(editorContext_.getId());\n        $(getElem('path_stretch_line')).remove();\n        $(elem).remove();\n        $(getElem('pathpointgrip_container')).find('*').attr('display', 'none');\n        firstCtrl = null;\n        editorContext_.setDrawnPath(null);\n        editorContext_.setStarted(false);\n      } else if (editorContext_.getCurrentMode() === 'pathedit') {\n        this.toSelectMode();\n      }\n      if (path) { path.init().show(false); }\n    },\n    /**\n    * @param {?(Element|SVGPathElement)} pth\n    * @returns {false|undefined}\n    */\n    resetOrientation (pth) {\n      if (isNullish(pth) || pth.nodeName !== 'path') { return false; }\n      const tlist = getTransformList(pth);\n      const m = transformListToTransform(tlist).matrix;\n      tlist.clear();\n      pth.removeAttribute('transform');\n      const segList = pth.pathSegList;\n\n      // Opera/win/non-EN throws an error here.\n      // TODO: Find out why!\n      // Presumed fixed in Opera 10.5, so commented out for now\n\n      // try {\n      const len = segList.numberOfItems;\n      // } catch(err) {\n      //   const fixed_d = pathActions.convertPath(pth);\n      //   pth.setAttribute('d', fixed_d);\n      //   segList = pth.pathSegList;\n      //   const len = segList.numberOfItems;\n      // }\n      // let lastX, lastY;\n      for (let i = 0; i < len; ++i) {\n        const seg = segList.getItem(i);\n        const type = seg.pathSegType;\n        if (type === 1) { continue; }\n        const pts = [];\n        $.each(['', 1, 2], function (j, n) {\n          const x = seg['x' + n], y = seg['y' + n];\n          if (x !== undefined && y !== undefined) {\n            const pt = transformPoint(x, y, m);\n            pts.splice(pts.length, 0, pt.x, pt.y);\n          }\n        });\n        replacePathSeg(type, i, pts, pth);\n      }\n\n      reorientGrads(pth, m);\n      return undefined;\n    },\n    /**\n    * @returns {undefined}\n    */\n    zoomChange () {\n      if (editorContext_.getCurrentMode() === 'pathedit') {\n        path.update();\n      }\n    },\n    /**\n    * @typedef {PlainObject} module:path.NodePoint\n    * @property {Float} x\n    * @property {Float} y\n    * @property {Integer} type\n    */\n    /**\n    * @returns {module:path.NodePoint}\n    */\n    getNodePoint () {\n      const selPt = path.selected_pts.length ? path.selected_pts[0] : 1;\n\n      const seg = path.segs[selPt];\n      return {\n        x: seg.item.x,\n        y: seg.item.y,\n        type: seg.type\n      };\n    },\n    /**\n    * @param {boolean} linkPoints\n    * @returns {undefined}\n    */\n    linkControlPoints (linkPoints) {\n      setLinkControlPoints(linkPoints);\n    },\n    /**\n    * @returns {undefined}\n    */\n    clonePathNode () {\n      path.storeD();\n\n      const selPts = path.selected_pts;\n      // const {segs} = path;\n\n      let i = selPts.length;\n      const nums = [];\n\n      while (i--) {\n        const pt = selPts[i];\n        path.addSeg(pt);\n\n        nums.push(pt + i);\n        nums.push(pt + i + 1);\n      }\n      path.init().addPtsToSelection(nums);\n\n      path.endChanges('Clone path node(s)');\n    },\n    /**\n    * @returns {undefined}\n    */\n    opencloseSubPath () {\n      const selPts = path.selected_pts;\n      // Only allow one selected node for now\n      if (selPts.length !== 1) { return; }\n\n      const {elem} = path;\n      const list = elem.pathSegList;\n\n      // const len = list.numberOfItems;\n\n      const index = selPts[0];\n\n      let openPt = null;\n      let startItem = null;\n\n      // Check if subpath is already open\n      path.eachSeg(function (i) {\n        if (this.type === 2 && i <= index) {\n          startItem = this.item;\n        }\n        if (i <= index) { return true; }\n        if (this.type === 2) {\n          // Found M first, so open\n          openPt = i;\n          return false;\n        }\n        if (this.type === 1) {\n          // Found Z first, so closed\n          openPt = false;\n          return false;\n        }\n        return true;\n      });\n\n      if (isNullish(openPt)) {\n        // Single path, so close last seg\n        openPt = path.segs.length - 1;\n      }\n\n      if (openPt !== false) {\n        // Close this path\n\n        // Create a line going to the previous \"M\"\n        const newseg = elem.createSVGPathSegLinetoAbs(startItem.x, startItem.y);\n\n        const closer = elem.createSVGPathSegClosePath();\n        if (openPt === path.segs.length - 1) {\n          list.appendItem(newseg);\n          list.appendItem(closer);\n        } else {\n          insertItemBefore(elem, closer, openPt);\n          insertItemBefore(elem, newseg, openPt);\n        }\n\n        path.init().selectPt(openPt + 1);\n        return;\n      }\n\n      // M 1,1 L 2,2 L 3,3 L 1,1 z // open at 2,2\n      // M 2,2 L 3,3 L 1,1\n\n      // M 1,1 L 2,2 L 1,1 z M 4,4 L 5,5 L6,6 L 5,5 z\n      // M 1,1 L 2,2 L 1,1 z [M 4,4] L 5,5 L(M)6,6 L 5,5 z\n\n      const seg = path.segs[index];\n\n      if (seg.mate) {\n        list.removeItem(index); // Removes last \"L\"\n        list.removeItem(index); // Removes the \"Z\"\n        path.init().selectPt(index - 1);\n        return;\n      }\n\n      let lastM, zSeg;\n\n      // Find this sub-path's closing point and remove\n      for (let i = 0; i < list.numberOfItems; i++) {\n        const item = list.getItem(i);\n\n        if (item.pathSegType === 2) {\n          // Find the preceding M\n          lastM = i;\n        } else if (i === index) {\n          // Remove it\n          list.removeItem(lastM);\n          // index--;\n        } else if (item.pathSegType === 1 && index < i) {\n          // Remove the closing seg of this subpath\n          zSeg = i - 1;\n          list.removeItem(i);\n          break;\n        }\n      }\n\n      let num = (index - lastM) - 1;\n\n      while (num--) {\n        insertItemBefore(elem, list.getItem(lastM), zSeg);\n      }\n\n      const pt = list.getItem(lastM);\n\n      // Make this point the new \"M\"\n      replacePathSeg(2, lastM, [pt.x, pt.y]);\n\n      // i = index; // i is local here, so has no effect; what was the intent for this?\n\n      path.init().selectPt(0);\n    },\n    /**\n    * @returns {undefined}\n    */\n    deletePathNode () {\n      if (!pathActions.canDeleteNodes) { return; }\n      path.storeD();\n\n      const selPts = path.selected_pts;\n\n      let i = selPts.length;\n      while (i--) {\n        const pt = selPts[i];\n        path.deleteSeg(pt);\n      }\n\n      // Cleanup\n      const cleanup = function () {\n        const segList = path.elem.pathSegList;\n        let len = segList.numberOfItems;\n\n        const remItems = function (pos, count) {\n          while (count--) {\n            segList.removeItem(pos);\n          }\n        };\n\n        if (len <= 1) { return true; }\n\n        while (len--) {\n          const item = segList.getItem(len);\n          if (item.pathSegType === 1) {\n            const prev = segList.getItem(len - 1);\n            const nprev = segList.getItem(len - 2);\n            if (prev.pathSegType === 2) {\n              remItems(len - 1, 2);\n              cleanup();\n              break;\n            } else if (nprev.pathSegType === 2) {\n              remItems(len - 2, 3);\n              cleanup();\n              break;\n            }\n          } else if (item.pathSegType === 2) {\n            if (len > 0) {\n              const prevType = segList.getItem(len - 1).pathSegType;\n              // Path has M M\n              if (prevType === 2) {\n                remItems(len - 1, 1);\n                cleanup();\n                break;\n              // Entire path ends with Z M\n              } else if (prevType === 1 && segList.numberOfItems - 1 === len) {\n                remItems(len, 1);\n                cleanup();\n                break;\n              }\n            }\n          }\n        }\n        return false;\n      };\n\n      cleanup();\n\n      // Completely delete a path with 1 or 0 segments\n      if (path.elem.pathSegList.numberOfItems <= 1) {\n        pathActions.toSelectMode(path.elem);\n        editorContext_.canvas.deleteSelectedElements();\n        return;\n      }\n\n      path.init();\n      path.clearSelection();\n\n      // TODO: Find right way to select point now\n      // path.selectPt(selPt);\n      if (window.opera) { // Opera repaints incorrectly\n        const cp = $(path.elem);\n        cp.attr('d', cp.attr('d'));\n      }\n      path.endChanges('Delete path node(s)');\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Smooth polyline into path\n    * @function module:path.pathActions.smoothPolylineIntoPath\n    * @see module:path~smoothPolylineIntoPath\n    */\n    smoothPolylineIntoPath,\n    /**\n    * @param {?Integer} v See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n    * @returns {undefined}\n    */\n    setSegType (v) {\n      path.setSegType(v);\n    },\n    /**\n    * @param {string} attr\n    * @param {Float} newValue\n    * @returns {undefined}\n    */\n    moveNode (attr, newValue) {\n      const selPts = path.selected_pts;\n      if (!selPts.length) { return; }\n\n      path.storeD();\n\n      // Get first selected point\n      const seg = path.segs[selPts[0]];\n      const diff = {x: 0, y: 0};\n      diff[attr] = newValue - seg.item[attr];\n\n      seg.move(diff.x, diff.y);\n      path.endChanges('Move path point');\n    },\n    /**\n    * @param {Element} elem\n    * @returns {undefined}\n    */\n    fixEnd (elem) {\n      // Adds an extra segment if the last seg before a Z doesn't end\n      // at its M point\n      // M0,0 L0,100 L100,100 z\n      const segList = elem.pathSegList;\n      const len = segList.numberOfItems;\n      let lastM;\n      for (let i = 0; i < len; ++i) {\n        const item = segList.getItem(i);\n        if (item.pathSegType === 2) {\n          lastM = item;\n        }\n\n        if (item.pathSegType === 1) {\n          const prev = segList.getItem(i - 1);\n          if (prev.x !== lastM.x || prev.y !== lastM.y) {\n            // Add an L segment here\n            const newseg = elem.createSVGPathSegLinetoAbs(lastM.x, lastM.y);\n            insertItemBefore(elem, newseg, i);\n            // Can this be done better?\n            pathActions.fixEnd(elem);\n            break;\n          }\n        }\n      }\n      if (isWebkit()) { editorContext_.resetD(elem); }\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Convert a path to one with only absolute or relative values\n    * @function module:path.pathActions.convertPath\n    * @see module:path.convertPath\n    */\n    convertPath\n  });\n})();\n// end pathActions\n","/* globals jQuery */\n/**\n * Miscellaneous utilities\n * @module utilities\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {setUnitAttr, getTypeMap} from './units.js';\nimport {convertPath} from './path.js';\nimport {\n  hasMatrixTransform, transformListToTransform, transformBox\n} from './math.js';\nimport {\n  isWebkit, supportsHVLineContainerBBox, supportsPathBBox, supportsXpath,\n  supportsSelectors\n} from './browser.js';\n\n// Constants\nconst $ = jQueryPluginSVG(jQuery);\n\n// String used to encode base64.\nconst KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n\n// Much faster than running getBBox() every time\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst visElemsArr = visElems.split(',');\n// const hidElems = 'clipPath,defs,desc,feGaussianBlur,filter,linearGradient,marker,mask,metadata,pattern,radialGradient,stop,switch,symbol,title,textPath';\n\nlet editorContext_ = null;\nlet domdoc_ = null;\nlet domcontainer_ = null;\nlet svgroot_ = null;\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:utilities.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:utilities.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:utilities.EditorContext\n * @property {module:path.pathActions} pathActions\n */\n/**\n * @function module:utilities.EditorContext#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * Create a new SVG element based on the given object keys/values and add it\n * to the current layer.\n * The element will be run through `cleanupElement` before being returned\n * @function module:utilities.EditorContext#addSVGElementFromJson\n * @param {module:utilities.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:utilities.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:utilities.EditorContext#getDOMDocument\n * @returns {HTMLDocument}\n*/\n/**\n * @function module:utilities.EditorContext#getDOMContainer\n * @returns {HTMLElement}\n*/\n/**\n * @function module:utilities.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n/**\n * @function module:utilities.EditorContext#getBaseUnit\n * @returns {string}\n*/\n/**\n * @function module:utilities.EditorContext#getSnappingStep\n * @returns {Float|string}\n*/\n\n/**\n* @function module:utilities.init\n* @param {module:utilities.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n  domdoc_ = editorContext.getDOMDocument();\n  domcontainer_ = editorContext.getDOMContainer();\n  svgroot_ = editorContext.getSVGRoot();\n};\n\n/**\n * Used to prevent the [Billion laughs attack]{@link https://en.wikipedia.org/wiki/Billion_laughs_attack}.\n * @function module:utilities.dropXMLInteralSubset\n * @param {string} str String to be processed\n * @returns {string} The string with entity declarations in the internal subset removed\n * @todo This might be needed in other places `parseFromString` is used even without LGTM flagging\n */\nexport const dropXMLInteralSubset = (str) => {\n  return str.replace(/(<!DOCTYPE\\s+\\w*\\s*\\[).*(\\?\\]>)/, '$1$2');\n};\n\n/**\n* Converts characters in a string to XML-friendly entities.\n* @function module:utilities.toXml\n* @example `&` becomes `&amp;`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport const toXml = function (str) {\n  // &apos; is ok in XML, but not HTML\n  // &gt; does not normally need escaping, though it can if within a CDATA expression (and preceded by \"]]\")\n  return str\n    .replace(/&/g, '&amp;')\n    .replace(/</g, '&lt;')\n    .replace(/>/g, '&gt;')\n    .replace(/\"/g, '&quot;')\n    .replace(/'/g, '&#x27;'); // Note: `&apos;` is XML only\n};\n\n/**\n* Converts XML entities in a string to single characters.\n* @function module:utilities.fromXml\n* @example `&amp;` becomes `&`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport function fromXml (str) {\n  return $('<p/>').html(str).text();\n}\n\n// This code was written by Tyler Akins and has been placed in the\n// public domain.  It would be nice if you left this header intact.\n// Base64 code from Tyler Akins -- http://rumkin.com\n\n// schiller: Removed string concatenation in favour of Array.join() optimization,\n//        also precalculate the size of the array needed.\n\n/**\n* Converts a string to base64.\n* @function module:utilities.encode64\n* @param {string} input\n* @returns {string} Base64 output\n*/\nexport function encode64 (input) {\n  // base64 strings are 4/3 larger than the original string\n  input = encodeUTF8(input); // convert non-ASCII characters\n  // input = convertToXMLReferences(input);\n  if (window.btoa) {\n    return window.btoa(input); // Use native if available\n  }\n  const output = new Array(Math.floor((input.length + 2) / 3) * 4);\n\n  let i = 0,\n    p = 0;\n  do {\n    const chr1 = input.charCodeAt(i++);\n    const chr2 = input.charCodeAt(i++);\n    const chr3 = input.charCodeAt(i++);\n\n    /* eslint-disable no-bitwise */\n    const enc1 = chr1 >> 2;\n    const enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n\n    let enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n    let enc4 = chr3 & 63;\n    /* eslint-enable no-bitwise */\n\n    if (isNaN(chr2)) {\n      enc3 = 64;\n      enc4 = 64;\n    } else if (isNaN(chr3)) {\n      enc4 = 64;\n    }\n\n    output[p++] = KEYSTR.charAt(enc1);\n    output[p++] = KEYSTR.charAt(enc2);\n    output[p++] = KEYSTR.charAt(enc3);\n    output[p++] = KEYSTR.charAt(enc4);\n  } while (i < input.length);\n\n  return output.join('');\n}\n\n/**\n* Converts a string from base64.\n* @function module:utilities.decode64\n* @param {string} input Base64-encoded input\n* @returns {string} Decoded output\n*/\nexport function decode64 (input) {\n  if (window.atob) {\n    return decodeUTF8(window.atob(input));\n  }\n\n  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =\n  input = input.replace(/[^A-Za-z0-9+/=]/g, '');\n\n  let output = '';\n  let i = 0;\n\n  do {\n    const enc1 = KEYSTR.indexOf(input.charAt(i++));\n    const enc2 = KEYSTR.indexOf(input.charAt(i++));\n    const enc3 = KEYSTR.indexOf(input.charAt(i++));\n    const enc4 = KEYSTR.indexOf(input.charAt(i++));\n\n    /* eslint-disable no-bitwise */\n    const chr1 = (enc1 << 2) | (enc2 >> 4);\n    const chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n    const chr3 = ((enc3 & 3) << 6) | enc4;\n    /* eslint-enable no-bitwise */\n\n    output += String.fromCharCode(chr1);\n\n    if (enc3 !== 64) {\n      output += String.fromCharCode(chr2);\n    }\n    if (enc4 !== 64) {\n      output += String.fromCharCode(chr3);\n    }\n  } while (i < input.length);\n  return decodeUTF8(output);\n}\n\n/**\n* @function module:utilities.decodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport function decodeUTF8 (argString) {\n  return decodeURIComponent(escape(argString));\n}\n\n// codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded\n/**\n* @function module:utilities.encodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport const encodeUTF8 = function (argString) {\n  return unescape(encodeURIComponent(argString));\n};\n\n/**\n * Convert dataURL to object URL.\n * @function module:utilities.dataURLToObjectURL\n * @param {string} dataurl\n * @returns {string} object URL or empty string\n */\nexport const dataURLToObjectURL = function (dataurl) {\n  if (typeof Uint8Array === 'undefined' || typeof Blob === 'undefined' || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  const arr = dataurl.split(','),\n    mime = arr[0].match(/:(.*?);/)[1],\n    bstr = atob(arr[1]);\n  let n = bstr.length;\n  const u8arr = new Uint8Array(n);\n  while (n--) {\n    u8arr[n] = bstr.charCodeAt(n);\n  }\n  const blob = new Blob([u8arr], {type: mime});\n  return URL.createObjectURL(blob);\n};\n\n/**\n * Get object URL for a blob object.\n * @function module:utilities.createObjectURL\n * @param {Blob} blob A Blob object or File object\n * @returns {string} object URL or empty string\n */\nexport const createObjectURL = function (blob) {\n  if (!blob || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  return URL.createObjectURL(blob);\n};\n\n/**\n * @property {string} blankPageObjectURL\n */\nexport const blankPageObjectURL = (function () {\n  if (typeof Blob === 'undefined') {\n    return '';\n  }\n  const blob = new Blob(['<html><head><title>SVG-edit</title></head><body>&nbsp;</body></html>'], {type: 'text/html'});\n  return createObjectURL(blob);\n})();\n\n/**\n* Converts a string to use XML references (for non-ASCII).\n* @function module:utilities.convertToXMLReferences\n* @param {string} input\n* @returns {string} Decimal numeric character references\n*/\nexport const convertToXMLReferences = function (input) {\n  let output = '';\n  [...input].forEach((ch) => {\n    const c = ch.charCodeAt();\n    if (c <= 127) {\n      output += ch;\n    } else {\n      output += `&#${c};`;\n    }\n  });\n  return output;\n};\n\n/**\n* Cross-browser compatible method of converting a string to an XML tree.\n* Found this function [here]{@link http://groups.google.com/group/jquery-dev/browse_thread/thread/c6d11387c580a77f}.\n* @function module:utilities.text2xml\n* @param {string} sXML\n* @throws {Error}\n* @returns {XMLDocument}\n*/\nexport const text2xml = function (sXML) {\n  if (sXML.includes('<svg:svg')) {\n    sXML = sXML.replace(/<(\\/?)svg:/g, '<$1').replace('xmlns:svg', 'xmlns');\n  }\n\n  let out, dXML;\n  try {\n    dXML = (window.DOMParser) ? new DOMParser() : new window.ActiveXObject('Microsoft.XMLDOM');\n    dXML.async = false;\n  } catch (e) {\n    throw new Error('XML Parser could not be instantiated');\n  }\n  try {\n    if (dXML.loadXML) {\n      out = (dXML.loadXML(sXML)) ? dXML : false;\n    } else {\n      out = dXML.parseFromString(sXML, 'text/xml');\n    }\n  } catch (e2) { throw new Error('Error parsing XML string'); }\n  return out;\n};\n\n/**\n* @typedef {PlainObject} module:utilities.BBoxObject (like `DOMRect`)\n* @property {Float} x\n* @property {Float} y\n* @property {Float} width\n* @property {Float} height\n*/\n\n/**\n* Converts a `SVGRect` into an object.\n* @function module:utilities.bboxToObj\n* @param {SVGRect} bbox - a SVGRect\n* @returns {module:utilities.BBoxObject} An object with properties names x, y, width, height.\n*/\nexport const bboxToObj = function ({x, y, width, height}) {\n  return {x, y, width, height};\n};\n\n/**\n* @callback module:utilities.TreeWalker\n* @param {Element} elem - DOM element being traversed\n* @returns {undefined}\n*/\n\n/**\n* Walks the tree and executes the callback on each element in a top-down fashion.\n* @function module:utilities.walkTree\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTree = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    cbFn(elem);\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n  }\n};\n\n/**\n* Walks the tree and executes the callback on each element in a depth-first fashion.\n* @function module:utilities.walkTreePost\n* @todo FIXME: Shouldn't this be calling walkTreePost?\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTreePost = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n    cbFn(elem);\n  }\n};\n\n/**\n* Extracts the URL from the `url(...)` syntax of some attributes.\n* Three variants:\n*  - `<circle fill=\"url(someFile.svg#foo)\" />`\n*  - `<circle fill=\"url('someFile.svg#foo')\" />`\n*  - `<circle fill='url(\"someFile.svg#foo\")' />`\n* @function module:utilities.getUrlFromAttr\n* @param {string} attrVal The attribute value as a string\n* @returns {string} String with just the URL, like \"someFile.svg#foo\"\n*/\nexport const getUrlFromAttr = function (attrVal) {\n  if (attrVal) {\n    // url('#somegrad')\n    if (attrVal.startsWith('url(\"')) {\n      return attrVal.substring(5, attrVal.indexOf('\"', 6));\n    }\n    // url('#somegrad')\n    if (attrVal.startsWith(\"url('\")) {\n      return attrVal.substring(5, attrVal.indexOf(\"'\", 6));\n    }\n    if (attrVal.startsWith('url(')) {\n      return attrVal.substring(4, attrVal.indexOf(')'));\n    }\n  }\n  return null;\n};\n\n/**\n* @function module:utilities.getHref\n* @param {Element} elem\n* @returns {string} The given element's `xlink:href` value\n*/\nexport let getHref = function (elem) { // eslint-disable-line import/no-mutable-exports\n  return elem.getAttributeNS(NS.XLINK, 'href');\n};\n\n/**\n* Sets the given element's `xlink:href` value.\n* @function module:utilities.setHref\n* @param {Element} elem\n* @param {string} val\n* @returns {undefined}\n*/\nexport let setHref = function (elem, val) { // eslint-disable-line import/no-mutable-exports\n  elem.setAttributeNS(NS.XLINK, 'xlink:href', val);\n};\n\n/**\n* @function module:utilities.findDefs\n* @returns {SVGDefsElement} The document's `<defs>` element, creating it first if necessary\n*/\nexport const findDefs = function () {\n  const svgElement = editorContext_.getSVGContent();\n  let defs = svgElement.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (defs.length > 0) {\n    defs = defs[0];\n  } else {\n    defs = svgElement.ownerDocument.createElementNS(NS.SVG, 'defs');\n    if (svgElement.firstChild) {\n      // first child is a comment, so call nextSibling\n      svgElement.insertBefore(defs, svgElement.firstChild.nextSibling);\n      // svgElement.firstChild.nextSibling.before(defs); // Not safe\n    } else {\n      svgElement.append(defs);\n    }\n  }\n  return defs;\n};\n\n// TODO(codedread): Consider moving the next to functions to bbox.js\n\n/**\n* Get correct BBox for a path in Webkit.\n* Converted from code found [here]{@link http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html}.\n* @function module:utilities.getPathBBox\n* @param {SVGPathElement} path - The path DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} A BBox-like object\n*/\nexport const getPathBBox = function (path) {\n  const seglist = path.pathSegList;\n  const tot = seglist.numberOfItems;\n\n  const bounds = [[], []];\n  const start = seglist.getItem(0);\n  let P0 = [start.x, start.y];\n\n  const getCalc = function (j, P1, P2, P3) {\n    return function (t) {\n      return Math.pow(1 - t, 3) * P0[j] +\n        3 * Math.pow(1 - t, 2) * t * P1[j] +\n        3 * (1 - t) * Math.pow(t, 2) * P2[j] +\n        Math.pow(t, 3) * P3[j];\n    };\n  };\n\n  for (let i = 0; i < tot; i++) {\n    const seg = seglist.getItem(i);\n\n    if (seg.x === undefined) { continue; }\n\n    // Add actual points to limits\n    bounds[0].push(P0[0]);\n    bounds[1].push(P0[1]);\n\n    if (seg.x1) {\n      const P1 = [seg.x1, seg.y1],\n        P2 = [seg.x2, seg.y2],\n        P3 = [seg.x, seg.y];\n\n      for (let j = 0; j < 2; j++) {\n        const calc = getCalc(j, P1, P2, P3);\n\n        const b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];\n        const a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];\n        const c = 3 * P1[j] - 3 * P0[j];\n\n        if (a === 0) {\n          if (b === 0) { continue; }\n          const t = -c / b;\n          if (t > 0 && t < 1) {\n            bounds[j].push(calc(t));\n          }\n          continue;\n        }\n        const b2ac = Math.pow(b, 2) - 4 * c * a;\n        if (b2ac < 0) { continue; }\n        const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);\n        if (t1 > 0 && t1 < 1) { bounds[j].push(calc(t1)); }\n        const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);\n        if (t2 > 0 && t2 < 1) { bounds[j].push(calc(t2)); }\n      }\n      P0 = P3;\n    } else {\n      bounds[0].push(seg.x);\n      bounds[1].push(seg.y);\n    }\n  }\n\n  const x = Math.min.apply(null, bounds[0]);\n  const w = Math.max.apply(null, bounds[0]) - x;\n  const y = Math.min.apply(null, bounds[1]);\n  const h = Math.max.apply(null, bounds[1]) - y;\n  return {\n    x,\n    y,\n    width: w,\n    height: h\n  };\n};\n\n/**\n* Get the given/selected element's bounding box object, checking for\n* horizontal/vertical lines (see issue 717)\n* Note that performance is currently terrible, so some way to improve would\n* be great.\n* @param {Element} selected - Container or `<use>` DOM element\n* @returns {DOMRect} Bounding box object\n*/\nfunction groupBBFix (selected) {\n  if (supportsHVLineContainerBBox()) {\n    try { return selected.getBBox(); } catch (e) {}\n  }\n  const ref = $.data(selected, 'ref');\n  let matched = null;\n  let ret, copy;\n\n  if (ref) {\n    copy = $(ref).children().clone().attr('visibility', 'hidden');\n    $(svgroot_).append(copy);\n    matched = copy.filter('line, path');\n  } else {\n    matched = $(selected).find('line, path');\n  }\n\n  let issue = false;\n  if (matched.length) {\n    matched.each(function () {\n      const bb = this.getBBox();\n      if (!bb.width || !bb.height) {\n        issue = true;\n      }\n    });\n    if (issue) {\n      const elems = ref ? copy : $(selected).children();\n      ret = getStrokedBBox(elems);\n    } else {\n      ret = selected.getBBox();\n    }\n  } else {\n    ret = selected.getBBox();\n  }\n  if (ref) {\n    copy.remove();\n  }\n  return ret;\n}\n\n/**\n* Get the given/selected element's bounding box object, convert it to be more\n* usable when necessary.\n* @function module:utilities.getBBox\n* @param {Element} elem - Optional DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} Bounding box object\n*/\nexport const getBBox = function (elem) {\n  const selected = elem || editorContext_.geSelectedElements()[0];\n  if (elem.nodeType !== 1) { return null; }\n  const elname = selected.nodeName;\n\n  let ret = null;\n  switch (elname) {\n  case 'text':\n    if (selected.textContent === '') {\n      selected.textContent = 'a'; // Some character needed for the selector to use.\n      ret = selected.getBBox();\n      selected.textContent = '';\n    } else if (selected.getBBox) {\n      ret = selected.getBBox();\n    }\n    break;\n  case 'path':\n    if (!supportsPathBBox()) {\n      ret = getPathBBox(selected);\n    } else if (selected.getBBox) {\n      ret = selected.getBBox();\n    }\n    break;\n  case 'g':\n  case 'a':\n    ret = groupBBFix(selected);\n    break;\n  default:\n\n    if (elname === 'use') {\n      ret = groupBBFix(selected); // , true);\n    }\n    if (elname === 'use' || (elname === 'foreignObject' && isWebkit())) {\n      if (!ret) { ret = selected.getBBox(); }\n      // This is resolved in later versions of webkit, perhaps we should\n      // have a featured detection for correct 'use' behavior?\n      // ——————————\n      if (!isWebkit()) {\n        const bb = {};\n        bb.width = ret.width;\n        bb.height = ret.height;\n        bb.x = ret.x + parseFloat(selected.getAttribute('x') || 0);\n        bb.y = ret.y + parseFloat(selected.getAttribute('y') || 0);\n        ret = bb;\n      }\n    } else if (visElemsArr.includes(elname)) {\n      if (selected) {\n        try {\n          ret = selected.getBBox();\n        } catch (err) {\n          // tspan (and textPath apparently) have no `getBBox` in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=937268\n          // Re: Chrome returning bbox for containing text element, see: https://bugs.chromium.org/p/chromium/issues/detail?id=349835\n          const extent = selected.getExtentOfChar(0); // pos+dimensions of the first glyph\n          const width = selected.getComputedTextLength(); // width of the tspan\n          ret = {\n            x: extent.x,\n            y: extent.y,\n            width,\n            height: extent.height\n          };\n        }\n      } else {\n        // Check if element is child of a foreignObject\n        const fo = $(selected).closest('foreignObject');\n        if (fo.length) {\n          if (fo[0].getBBox) {\n            ret = fo[0].getBBox();\n          }\n        }\n      }\n    }\n  }\n  if (ret) {\n    ret = bboxToObj(ret);\n  }\n\n  // get the bounding box from the DOM (which is in that element's coordinate system)\n  return ret;\n};\n\n/**\n* @typedef {GenericArray} module:utilities.PathSegmentArray\n* @property {Integer} length 2\n* @property {\"M\"|\"L\"|\"C\"|\"Z\"} 0\n* @property {Float[]} 1\n*/\n\n/**\n* Create a path 'd' attribute from path segments.\n* Each segment is an array of the form: `[singleChar, [x,y, x,y, ...]]`\n* @function module:utilities.getPathDFromSegments\n* @param {module:utilities.PathSegmentArray[]} pathSegments - An array of path segments to be converted\n* @returns {string} The converted path d attribute.\n*/\nexport const getPathDFromSegments = function (pathSegments) {\n  let d = '';\n\n  $.each(pathSegments, function (j, [singleChar, pts]) {\n    d += singleChar;\n    for (let i = 0; i < pts.length; i += 2) {\n      d += (pts[i] + ',' + pts[i + 1]) + ' ';\n    }\n  });\n\n  return d;\n};\n\n/**\n* Make a path 'd' attribute from a simple SVG element shape.\n* @function module:utilities.getPathDFromElement\n* @param {Element} elem - The element to be converted\n* @returns {string} The path d attribute or `undefined` if the element type is unknown.\n*/\nexport const getPathDFromElement = function (elem) {\n  // Possibly the cubed root of 6, but 1.81 works best\n  let num = 1.81;\n  let d, a, rx, ry;\n  switch (elem.tagName) {\n  case 'ellipse':\n  case 'circle': {\n    a = $(elem).attr(['rx', 'ry', 'cx', 'cy']);\n    const {cx, cy} = a;\n    ({rx, ry} = a);\n    if (elem.tagName === 'circle') {\n      ry = $(elem).attr('r');\n      rx = ry;\n    }\n\n    d = getPathDFromSegments([\n      ['M', [(cx - rx), (cy)]],\n      ['C', [(cx - rx), (cy - ry / num), (cx - rx / num), (cy - ry), (cx), (cy - ry)]],\n      ['C', [(cx + rx / num), (cy - ry), (cx + rx), (cy - ry / num), (cx + rx), (cy)]],\n      ['C', [(cx + rx), (cy + ry / num), (cx + rx / num), (cy + ry), (cx), (cy + ry)]],\n      ['C', [(cx - rx / num), (cy + ry), (cx - rx), (cy + ry / num), (cx - rx), (cy)]],\n      ['Z', []]\n    ]);\n    break;\n  } case 'path':\n    d = elem.getAttribute('d');\n    break;\n  case 'line':\n    a = $(elem).attr(['x1', 'y1', 'x2', 'y2']);\n    d = 'M' + a.x1 + ',' + a.y1 + 'L' + a.x2 + ',' + a.y2;\n    break;\n  case 'polyline':\n    d = 'M' + elem.getAttribute('points');\n    break;\n  case 'polygon':\n    d = 'M' + elem.getAttribute('points') + ' Z';\n    break;\n  case 'rect': {\n    const r = $(elem).attr(['rx', 'ry']);\n    ({rx, ry} = r);\n    const b = elem.getBBox();\n    const {x, y} = b,\n      w = b.width,\n      h = b.height;\n    num = 4 - num; // Why? Because!\n\n    if (!rx && !ry) {\n      // Regular rect\n      d = getPathDFromSegments([\n        ['M', [x, y]],\n        ['L', [x + w, y]],\n        ['L', [x + w, y + h]],\n        ['L', [x, y + h]],\n        ['L', [x, y]],\n        ['Z', []]\n      ]);\n    } else {\n      d = getPathDFromSegments([\n        ['M', [x, y + ry]],\n        ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]],\n        ['L', [x + w - rx, y]],\n        ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]],\n        ['L', [x + w, y + h - ry]],\n        ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]],\n        ['L', [x + rx, y + h]],\n        ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]],\n        ['L', [x, y + ry]],\n        ['Z', []]\n      ]);\n    }\n    break;\n  } default:\n    break;\n  }\n\n  return d;\n};\n\n/**\n* Get a set of attributes from an element that is useful for convertToPath.\n* @function module:utilities.getExtraAttributesForConvertToPath\n* @param {Element} elem - The element to be probed\n* @returns {PlainObject.<\"marker-start\"|\"marker-end\"|\"marker-mid\"|\"filter\"|\"clip-path\", string>} An object with attributes.\n*/\nexport const getExtraAttributesForConvertToPath = function (elem) {\n  const attrs = {};\n  // TODO: make this list global so that we can properly maintain it\n  // TODO: what about @transform, @clip-rule, @fill-rule, etc?\n  $.each(['marker-start', 'marker-end', 'marker-mid', 'filter', 'clip-path'], function () {\n    const a = elem.getAttribute(this);\n    if (a) {\n      attrs[this] = a;\n    }\n  });\n  return attrs;\n};\n\n/**\n* Get the BBox of an element-as-path.\n* @function module:utilities.getBBoxOfElementAsPath\n* @param {Element} elem - The DOM element to be probed\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, `pathActions.resetOrientation()` is used. See: canvas.pathActions.\n* @returns {DOMRect|false} The resulting path's bounding box object.\n*/\nexport const getBBoxOfElementAsPath = function (elem, addSVGElementFromJson, pathActions) {\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: getExtraAttributesForConvertToPath(elem)\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const {parentNode} = elem;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parentNode.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n  } else {\n    path.remove();\n  }\n\n  // Get the correct BBox of the new path, then discard it\n  pathActions.resetOrientation(path);\n  let bb = false;\n  try {\n    bb = path.getBBox();\n  } catch (e) {\n    // Firefox fails\n  }\n  path.remove();\n  return bb;\n};\n\n/**\n* Convert selected element to a path.\n* @function module:utilities.convertToPath\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.SVGElementJSON} attrs - Apply attributes to new path. see canvas.convertToPath\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}\n* @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}\n* @param {module:history} hstry - see history module\n* @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}\n* @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.\n*/\nexport const convertToPath = function (elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, hstry, addCommandToHistory) {\n  const batchCmd = new hstry.BatchCommand('Convert element to Path');\n\n  // Any attribute on the element not covered by the passed-in attributes\n  attrs = $.extend({}, attrs, getExtraAttributesForConvertToPath(elem));\n\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: attrs\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const {id} = elem;\n  const {parentNode} = elem;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parentNode.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n\n    // Replace the current element with the converted one\n\n    // Reorient if it has a matrix\n    if (eltrans) {\n      const tlist = getTransformList(path);\n      if (hasMatrixTransform(tlist)) {\n        pathActions.resetOrientation(path);\n      }\n    }\n\n    const {nextSibling} = elem;\n    batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));\n    batchCmd.addSubCommand(new hstry.InsertElementCommand(path));\n\n    clearSelection();\n    elem.remove();\n    path.setAttribute('id', id);\n    path.removeAttribute('visibility');\n    addToSelection([path], true);\n\n    addCommandToHistory(batchCmd);\n\n    return path;\n  }\n  // the elem.tagName was not recognized, so no \"d\" attribute. Remove it, so we've haven't changed anything.\n  path.remove();\n  return null;\n};\n\n/**\n* Can the bbox be optimized over the native getBBox? The optimized bbox is the same as the native getBBox when\n* the rotation angle is a multiple of 90 degrees and there are no complex transforms.\n* Getting an optimized bbox can be dramatically slower, so we want to make sure it's worth it.\n*\n* The best example for this is a circle rotate 45 degrees. The circle doesn't get wider or taller when rotated\n* about it's center.\n*\n* The standard, unoptimized technique gets the native bbox of the circle, rotates the box 45 degrees, uses\n* that width and height, and applies any transforms to get the final bbox. This means the calculated bbox\n* is much wider than the original circle. If the angle had been 0, 90, 180, etc. both techniques render the\n* same bbox.\n*\n* The optimization is not needed if the rotation is a multiple 90 degrees. The default technique is to call\n* getBBox then apply the angle and any transforms.\n*\n* @param {Float} angle - The rotation angle in degrees\n* @param {boolean} hasAMatrixTransform - True if there is a matrix transform\n* @returns {boolean} True if the bbox can be optimized.\n*/\nfunction bBoxCanBeOptimizedOverNativeGetBBox (angle, hasAMatrixTransform) {\n  const angleModulo90 = angle % 90;\n  const closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;\n  const closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;\n  return hasAMatrixTransform || !(closeTo0 || closeTo90);\n}\n\n/**\n* Get bounding box that includes any transforms.\n* @function module:utilities.getBBoxWithTransform\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getBBoxWithTransform = function (elem, addSVGElementFromJson, pathActions) {\n  // TODO: Fix issue with rotated groups. Currently they work\n  // fine in FF, but not in other browsers (same problem mentioned\n  // in Issue 339 comment #2).\n\n  let bb = getBBox(elem);\n\n  if (!bb) {\n    return null;\n  }\n\n  const tlist = getTransformList(elem);\n  const angle = getRotationAngleFromTransformList(tlist);\n  const hasMatrixXForm = hasMatrixTransform(tlist);\n\n  if (angle || hasMatrixXForm) {\n    let goodBb = false;\n    if (bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixXForm)) {\n      // Get the BBox from the raw path for these elements\n      // TODO: why ellipse and not circle\n      const elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];\n      if (elemNames.includes(elem.tagName)) {\n        goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n        bb = goodBb;\n      } else if (elem.tagName === 'rect') {\n        // Look for radius\n        const rx = elem.getAttribute('rx');\n        const ry = elem.getAttribute('ry');\n        if (rx || ry) {\n          goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n          bb = goodBb;\n        }\n      }\n    }\n\n    if (!goodBb) {\n      const {matrix} = transformListToTransform(tlist);\n      bb = transformBox(bb.x, bb.y, bb.width, bb.height, matrix).aabox;\n\n      // Old technique that was exceedingly slow with large documents.\n      //\n      // Accurate way to get BBox of rotated element in Firefox:\n      // Put element in group and get its BBox\n      //\n      // Must use clone else FF freaks out\n      // const clone = elem.cloneNode(true);\n      // const g = document.createElementNS(NS.SVG, 'g');\n      // const parent = elem.parentNode;\n      // parent.append(g);\n      // g.append(clone);\n      // const bb2 = bboxToObj(g.getBBox());\n      // g.remove();\n    }\n  }\n  return bb;\n};\n\n/**\n * @param {Element} elem\n * @returns {Float}\n * @todo This is problematic with large stroke-width and, for example, a single\n * horizontal line. The calculated BBox extends way beyond left and right sides.\n */\nfunction getStrokeOffsetForBBox (elem) {\n  const sw = elem.getAttribute('stroke-width');\n  return (!isNaN(sw) && elem.getAttribute('stroke') !== 'none') ? sw / 2 : 0;\n}\n\n/**\n * @typedef {PlainObject} BBox\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n * @property {Float} width\n * @property {Float} height\n */\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBox\n* @param {Element[]} elems - Array with DOM elements to check\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getStrokedBBox = function (elems, addSVGElementFromJson, pathActions) {\n  if (!elems || !elems.length) { return false; }\n\n  let fullBb;\n  $.each(elems, function () {\n    if (fullBb) { return; }\n    if (!this.parentNode) { return; }\n    fullBb = getBBoxWithTransform(this, addSVGElementFromJson, pathActions);\n  });\n\n  // This shouldn't ever happen...\n  if (fullBb === undefined) { return null; }\n\n  // fullBb doesn't include the stoke, so this does no good!\n  // if (elems.length == 1) return fullBb;\n\n  let maxX = fullBb.x + fullBb.width;\n  let maxY = fullBb.y + fullBb.height;\n  let minX = fullBb.x;\n  let minY = fullBb.y;\n\n  // If only one elem, don't call the potentially slow getBBoxWithTransform method again.\n  if (elems.length === 1) {\n    const offset = getStrokeOffsetForBBox(elems[0]);\n    minX -= offset;\n    minY -= offset;\n    maxX += offset;\n    maxY += offset;\n  } else {\n    $.each(elems, function (i, elem) {\n      const curBb = getBBoxWithTransform(elem, addSVGElementFromJson, pathActions);\n      if (curBb) {\n        const offset = getStrokeOffsetForBBox(elem);\n        minX = Math.min(minX, curBb.x - offset);\n        minY = Math.min(minY, curBb.y - offset);\n        // TODO: The old code had this test for max, but not min. I suspect this test should be for both min and max\n        if (elem.nodeType === 1) {\n          maxX = Math.max(maxX, curBb.x + curBb.width + offset);\n          maxY = Math.max(maxY, curBb.y + curBb.height + offset);\n        }\n      }\n    });\n  }\n\n  fullBb.x = minX;\n  fullBb.y = minY;\n  fullBb.width = maxX - minX;\n  fullBb.height = maxY - minY;\n  return fullBb;\n};\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:utilities.getVisibleElements\n* @param {Element} parentElement - The parent DOM element to search within\n* @returns {Element[]} All \"visible\" elements.\n*/\nexport const getVisibleElements = function (parentElement) {\n  if (!parentElement) {\n    parentElement = $(editorContext_.getSVGContent()).children(); // Prevent layers from being included\n  }\n\n  const contentElems = [];\n  $(parentElement).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push(elem);\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBoxDefaultVisible\n* @param {Element[]} elems - Array with DOM elements to check\n* @returns {module:utilities.BBoxObject} A single bounding box object\n*/\nexport const getStrokedBBoxDefaultVisible = function (elems) {\n  if (!elems) { elems = getVisibleElements(); }\n  return getStrokedBBox(\n    elems,\n    editorContext_.addSVGElementFromJson,\n    editorContext_.pathActions\n  );\n};\n\n/**\n* Get the rotation angle of the given transform list.\n* @function module:utilities.getRotationAngleFromTransformList\n* @param {SVGTransformList} tlist - List of transforms\n* @param {boolean} toRad - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport const getRotationAngleFromTransformList = function (tlist, toRad) {\n  if (!tlist) { return 0; } // <svg> elements have no tlist\n  const N = tlist.numberOfItems;\n  for (let i = 0; i < N; ++i) {\n    const xform = tlist.getItem(i);\n    if (xform.type === 4) {\n      return toRad ? xform.angle * Math.PI / 180.0 : xform.angle;\n    }\n  }\n  return 0.0;\n};\n\n/**\n* Get the rotation angle of the given/selected DOM element.\n* @function module:utilities.getRotationAngle\n* @param {Element} [elem] - DOM element to get the angle for. Default to first of selected elements.\n* @param {boolean} [toRad=false] - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport let getRotationAngle = function (elem, toRad) { // eslint-disable-line import/no-mutable-exports\n  const selected = elem || editorContext_.getSelectedElements()[0];\n  // find the rotation transform (if any) and set it\n  const tlist = getTransformList(selected);\n  return getRotationAngleFromTransformList(tlist, toRad);\n};\n\n/**\n* Get the reference element associated with the given attribute value.\n* @function module:utilities.getRefElem\n* @param {string} attrVal - The attribute value as a string\n* @returns {Element} Reference element\n*/\nexport const getRefElem = function (attrVal) {\n  return getElem(getUrlFromAttr(attrVal).substr(1));\n};\n\n/**\n* Get a DOM element by ID within the SVG root element.\n* @function module:utilities.getElem\n* @param {string} id - String with the element's new ID\n* @returns {?Element}\n*/\nexport const getElem = (supportsSelectors())\n  ? function (id) {\n    // querySelector lookup\n    return svgroot_.querySelector('#' + id);\n  }\n  : supportsXpath()\n    ? function (id) {\n      // xpath lookup\n      return domdoc_.evaluate(\n        'svg:svg[@id=\"svgroot\"]//svg:*[@id=\"' + id + '\"]',\n        domcontainer_,\n        function () { return NS.SVG; },\n        9,\n        null\n      ).singleNodeValue;\n    }\n    : function (id) {\n      // jQuery lookup: twice as slow as xpath in FF\n      return $(svgroot_).find('[id=' + id + ']')[0];\n    };\n\n/**\n* Assigns multiple attributes to an element.\n* @function module:utilities.assignAttributes\n* @param {Element} elem - DOM element to apply new attribute values to\n* @param {PlainObject.<string, string>} attrs - Object with attribute keys/values\n* @param {Integer} [suspendLength] - Milliseconds to suspend redraw\n* @param {boolean} [unitCheck=false] - Boolean to indicate the need to use units.setUnitAttr\n* @returns {undefined}\n*/\nexport const assignAttributes = function (elem, attrs, suspendLength, unitCheck) {\n  for (const [key, value] of Object.entries(attrs)) {\n    const ns = (key.substr(0, 4) === 'xml:'\n      ? NS.XML\n      : key.substr(0, 6) === 'xlink:' ? NS.XLINK : null);\n\n    if (ns) {\n      elem.setAttributeNS(ns, key, value);\n    } else if (!unitCheck) {\n      elem.setAttribute(key, value);\n    } else {\n      setUnitAttr(elem, key, value);\n    }\n  }\n};\n\n/**\n* Remove unneeded (default) attributes, making resulting SVG smaller.\n* @function module:utilities.cleanupElement\n* @param {Element} element - DOM element to clean up\n* @returns {undefined}\n*/\nexport const cleanupElement = function (element) {\n  const defaults = {\n    'fill-opacity': 1,\n    'stop-opacity': 1,\n    opacity: 1,\n    stroke: 'none',\n    'stroke-dasharray': 'none',\n    'stroke-linejoin': 'miter',\n    'stroke-linecap': 'butt',\n    'stroke-opacity': 1,\n    'stroke-width': 1,\n    rx: 0,\n    ry: 0\n  };\n\n  if (element.nodeName === 'ellipse') {\n    // Ellipse elements require rx and ry attributes\n    delete defaults.rx;\n    delete defaults.ry;\n  }\n\n  Object.entries(defaults).forEach(([attr, val]) => {\n    if (element.getAttribute(attr) === String(val)) {\n      element.removeAttribute(attr);\n    }\n  });\n};\n\n/**\n* Round value to for snapping.\n* @function module:utilities.snapToGrid\n* @param {Float} value\n* @returns {Integer}\n*/\nexport const snapToGrid = function (value) {\n  const unit = editorContext_.getBaseUnit();\n  let stepSize = editorContext_.getSnappingStep();\n  if (unit !== 'px') {\n    stepSize *= getTypeMap()[unit];\n  }\n  value = Math.round(value / stepSize) * stepSize;\n  return value;\n};\n\n/**\n* Escapes special characters in a regular expression.\n* @function module:utilities.regexEscape\n* @param {string} str\n* @returns {string}\n*/\nexport const regexEscape = function (str) {\n  // From: http://phpjs.org/functions\n  return String(str).replace(new RegExp('[.\\\\\\\\+*?\\\\[\\\\^\\\\]$(){}=!<>|:\\\\-]', 'g'), '\\\\$&');\n};\n\n/**\n * Prevents default browser click behaviour on the given element.\n * @function module:utilities.preventClickDefault\n * @param {Element} img - The DOM element to prevent the click on\n * @returns {undefined}\n */\nexport const preventClickDefault = function (img) {\n  $(img).click(function (e) { e.preventDefault(); });\n};\n\n/**\n * @callback module:utilities.GetNextID\n * @returns {string} The ID\n */\n/**\n * Create a clone of an element, updating its ID and its children's IDs when needed.\n * @function module:utilities.copyElem\n * @param {Element} el - DOM element to clone\n * @param {module:utilities.GetNextID} getNextId - The getter of the next unique ID.\n * @returns {Element} The cloned element\n */\nexport const copyElem = function (el, getNextId) {\n  // manually create a copy of the element\n  const newEl = document.createElementNS(el.namespaceURI, el.nodeName);\n  $.each(el.attributes, function (i, attr) {\n    if (attr.localName !== '-moz-math-font-style') {\n      newEl.setAttributeNS(attr.namespaceURI, attr.nodeName, attr.value);\n    }\n  });\n  // set the copied element's new id\n  newEl.removeAttribute('id');\n  newEl.id = getNextId();\n\n  // Opera's \"d\" value needs to be reset for Opera/Win/non-EN\n  // Also needed for webkit (else does not keep curved segments on clone)\n  if (isWebkit() && el.nodeName === 'path') {\n    const fixedD = convertPath(el);\n    newEl.setAttribute('d', fixedD);\n  }\n\n  // now create copies of all children\n  $.each(el.childNodes, function (i, child) {\n    switch (child.nodeType) {\n    case 1: // element node\n      newEl.append(copyElem(child, getNextId));\n      break;\n    case 3: // text node\n      newEl.textContent = child.nodeValue;\n      break;\n    default:\n      break;\n    }\n  });\n\n  if ($(el).data('gsvg')) {\n    $(newEl).data('gsvg', newEl.firstChild);\n  } else if ($(el).data('symbol')) {\n    const ref = $(el).data('symbol');\n    $(newEl).data('ref', ref).data('symbol', ref);\n  } else if (newEl.tagName === 'image') {\n    preventClickDefault(newEl);\n  }\n\n  return newEl;\n};\n\n/**\n * Whether a value is `null` or `undefined`.\n * @param {Any} val\n * @returns {boolean}\n */\nexport const isNullish = (val) => {\n  return val === null || val === undefined;\n};\n\n/**\n* Overwrite methods for unit testing.\n* @function module:utilities.mock\n* @param {PlainObject} mockMethods\n* @returns {undefined}\n*/\nexport const mock = ({\n  getHref: getHrefUser, setHref: setHrefUser, getRotationAngle: getRotationAngleUser\n}) => {\n  getHref = getHrefUser;\n  setHref = setHrefUser;\n  getRotationAngle = getRotationAngleUser;\n};\n","/* globals jQuery */\n/**\n * Adds context menu functionality\n * @module contextmenu\n * @license Apache-2.0\n * @author Adam Bender\n */\n// Dependencies:\n// 1) jQuery (for dom injection of context menus)\n\nconst $ = jQuery;\n\nlet contextMenuExtensions = {};\n\n/**\n * Signature depends on what the user adds; in the case of our uses with\n * SVGEditor, no parameters are passed nor anything expected for a return.\n * @callback module:contextmenu.MenuItemAction\n*/\n\n/**\n* @typedef {PlainObject} module:contextmenu.MenuItem\n* @property {string} id\n* @property {string} label\n* @property {module:contextmenu.MenuItemAction} action\n*/\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {boolean}\n*/\nconst menuItemIsValid = function (menuItem) {\n  return menuItem && menuItem.id && menuItem.label && menuItem.action && typeof menuItem.action === 'function';\n};\n\n/**\n* @function module:contextmenu.add\n* @param {module:contextmenu.MenuItem} menuItem\n* @throws {Error|TypeError}\n* @returns {undefined}\n*/\nexport const add = function (menuItem) {\n  // menuItem: {id, label, shortcut, action}\n  if (!menuItemIsValid(menuItem)) {\n    throw new TypeError('Menu items must be defined and have at least properties: id, label, action, where action must be a function');\n  }\n  if (menuItem.id in contextMenuExtensions) {\n    throw new Error('Cannot add extension \"' + menuItem.id + '\", an extension by that name already exists\"');\n  }\n  // Register menuItem action, see below for deferred menu dom injection\n  console.log('Registered contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}'); // eslint-disable-line no-console\n  contextMenuExtensions[menuItem.id] = menuItem;\n  // TODO: Need to consider how to handle custom enable/disable behavior\n};\n\n/**\n* @function module:contextmenu.hasCustomHandler\n* @param {string} handlerKey\n* @returns {boolean}\n*/\nexport const hasCustomHandler = function (handlerKey) {\n  return Boolean(contextMenuExtensions[handlerKey]);\n};\n\n/**\n* @function module:contextmenu.getCustomHandler\n* @param {string} handlerKey\n* @returns {module:contextmenu.MenuItemAction}\n*/\nexport const getCustomHandler = function (handlerKey) {\n  return contextMenuExtensions[handlerKey].action;\n};\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {undefined}\n*/\nconst injectExtendedContextMenuItemIntoDom = function (menuItem) {\n  if (!Object.keys(contextMenuExtensions).length) {\n    // all menuItems appear at the bottom of the menu in their own container.\n    // if this is the first extension menu we need to add the separator.\n    $('#cmenu_canvas').append(\"<li class='separator'>\");\n  }\n  const shortcut = menuItem.shortcut || '';\n  $('#cmenu_canvas').append(\"<li class='disabled'><a href='#\" + menuItem.id + \"'>\" +\n    menuItem.label + \"<span class='shortcut'>\" +\n    shortcut + '</span></a></li>');\n};\n\n/**\n* @function module:contextmenu.injectExtendedContextMenuItemsIntoDom\n* @returns {undefined}\n*/\nexport const injectExtendedContextMenuItemsIntoDom = function () {\n  Object.values(contextMenuExtensions).forEach((menuItem) => {\n    injectExtendedContextMenuItemIntoDom(menuItem);\n  });\n};\n/**\n* @function module:contextmenu.resetCustomMenus\n* @returns {undefined}\n*/\nexport const resetCustomMenus = function () { contextMenuExtensions = {}; };\n","// MIT License\n// From: https://github.com/uupaa/dynamic-import-polyfill/blob/master/importModule.js\n\n/**\n * @module importModule\n */\n\n/**\n * Converts a possible relative URL into an absolute one.\n * @param {string} url\n * @returns {string}\n */\nfunction toAbsoluteURL (url) {\n  const a = document.createElement('a');\n  a.setAttribute('href', url); // <a href=\"hoge.html\">\n  return a.cloneNode(false).href; // -> \"http://example.com/hoge.html\"\n}\n\n/**\n * Add any of the whitelisted attributes to the script tag.\n * @param {HTMLScriptElement} script\n * @param {PlainObject.<string, string>} atts\n * @returns {undefined}\n */\nfunction addScriptAtts (script, atts) {\n  ['id', 'class', 'type'].forEach((prop) => {\n    if (prop in atts) {\n      script[prop] = atts[prop];\n    }\n  });\n}\n\n// Additions by Brett\n/**\n* @typedef {PlainObject} module:importModule.ImportConfig\n* @property {string} global The variable name to set on `window` (when not using the modular version)\n* @property {boolean} [returnDefault=false]\n*/\n/**\n* @function module:importModule.importSetGlobalDefault\n* @param {string|string[]} url\n* @param {module:importModule.ImportConfig} config\n* @returns {Promise} The value to which it resolves depends on the export of the targeted module.\n*/\nexport function importSetGlobalDefault (url, config) {\n  return importSetGlobal(url, {...config, returnDefault: true});\n}\n/**\n* @function module:importModule.importSetGlobal\n* @param {string|string[]} url\n* @param {module:importModule.ImportConfig} config\n* @returns {Promise} The promise resolves to either an `ArbitraryModule` or\n*   any other value depends on the export of the targeted module.\n*/\nexport async function importSetGlobal (url, {global: glob, returnDefault}) {\n  // Todo: Replace calls to this function with `import()` when supported\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (modularVersion) {\n    return importModule(url, undefined, {returnDefault});\n  }\n  await importScript(url);\n  return window[glob];\n}\n/**\n *\n * @author Brett Zamir (other items are from `dynamic-import-polyfill`)\n * @param {string|string[]} url\n * @param {PlainObject} [atts={}]\n * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a\n *   script loading error\n */\nexport function importScript (url, atts = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importScript(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const script = document.createElement('script');\n    const destructor = () => {\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      script.src = '';\n    };\n    script.defer = 'defer';\n    addScriptAtts(script, atts);\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve();\n      destructor();\n    };\n    script.src = url;\n\n    document.head.append(script);\n  });\n}\n\n/**\n *\n * @param {string|string[]} url\n * @param {PlainObject} [atts={}]\n * @param {PlainObject} opts\n * @param {boolean} [opts.returnDefault=false} = {}]\n * @returns {Promise} Resolves to value of loading module or rejects with\n *   `Error` upon a script loading error.\n */\nexport function importModule (url, atts = {}, {returnDefault = false} = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importModule(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const vector = '$importModule$' + Math.random().toString(32).slice(2);\n    const script = document.createElement('script');\n    const destructor = () => {\n      delete window[vector];\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      URL.revokeObjectURL(script.src);\n      script.src = '';\n    };\n    addScriptAtts(script, atts);\n    script.defer = 'defer';\n    script.type = 'module';\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve(window[vector]);\n      destructor();\n    };\n    const absURL = toAbsoluteURL(url);\n    const loader = `import * as m from '${absURL.replace(/'/g, \"\\\\'\")}'; window.${vector} = ${returnDefault ? 'm.default || ' : ''}m;`; // export Module\n    const blob = new Blob([loader], {type: 'text/javascript'});\n    script.src = URL.createObjectURL(blob);\n\n    document.head.append(script);\n  });\n}\n\nexport default importModule;\n","/**\n * @module jQueryPluginDBox\n */\n/**\n* @param {external:jQuery} $\n* @param {PlainObject} [strings]\n* @param {PlainObject} [strings.ok]\n* @param {PlainObject} [strings.cancel]\n* @returns {external:jQuery}\n*/\nexport default function jQueryPluginDBox ($, strings = {ok: 'Ok', cancel: 'Cancel'}) {\n  // This sets up alternative dialog boxes. They mostly work the same way as\n  // their UI counterparts, expect instead of returning the result, a callback\n  // needs to be included that returns the result as its first parameter.\n  // In the future we may want to add additional types of dialog boxes, since\n  // they should be easy to handle this way.\n  $('#dialog_container').draggable({\n    cancel: '#dialog_content, #dialog_buttons *',\n    containment: 'window'\n  }).css('position', 'absolute');\n\n  const box = $('#dialog_box'),\n    btnHolder = $('#dialog_buttons'),\n    dialogContent = $('#dialog_content');\n\n  /**\n  * Resolves to `false` (if cancelled), for prompts and selects\n  * without checkboxes, it resolves to the value of the form control. For other\n  * types without checkboxes, it resolves to `true`. For checkboxes, it resolves\n  * to an object with the `response` key containing the same value as the previous\n  * mentioned (string or `true`) and a `checked` (boolean) property.\n  * @typedef {Promise} module:jQueryPluginDBox.PromiseResult\n  */\n  /**\n  * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption\n  * @property {string} text\n  * @property {string} value\n  */\n  /**\n  * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo\n  * @property {string} label Label for the checkbox\n  * @property {string} value Value of the checkbox\n  * @property {string} tooltip Tooltip on the checkbox label\n  * @property {boolean} checked Whether the checkbox is checked by default\n  */\n  /**\n   * Triggered upon a change of value for the select pull-down.\n   * @callback module:jQueryPluginDBox.SelectChangeListener\n   * @returns {undefined}\n   */\n  /**\n  * @param {\"alert\"|\"prompt\"|\"select\"|\"process\"} type\n  * @param {string} msg\n  * @param {string} [defaultVal]\n  * @param {module:jQueryPluginDBox.SelectOption[]} [opts]\n  * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]\n  * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  function dbox (type, msg, defaultVal, opts, changeListener, checkbox) {\n    dialogContent.html('<p>' + msg.replace(/\\n/g, '</p><p>') + '</p>')\n      .toggleClass('prompt', (type === 'prompt'));\n    btnHolder.empty();\n\n    const ok = $('<input type=\"button\" value=\"' + strings.ok + '\">').appendTo(btnHolder);\n\n    return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n      if (type !== 'alert') {\n        $('<input type=\"button\" value=\"' + strings.cancel + '\">')\n          .appendTo(btnHolder)\n          .click(function () {\n            box.hide();\n            resolve(false);\n          });\n      }\n\n      let ctrl, chkbx;\n      if (type === 'prompt') {\n        ctrl = $('<input type=\"text\">').prependTo(btnHolder);\n        ctrl.val(defaultVal || '');\n        ctrl.bind('keydown', 'return', function () { ok.click(); });\n      } else if (type === 'select') {\n        const div = $('<div style=\"text-align:center;\">');\n        ctrl = $('<select>').appendTo(div);\n        if (checkbox) {\n          const label = $('<label>').text(checkbox.label);\n          chkbx = $('<input type=\"checkbox\">').appendTo(label);\n          chkbx.val(checkbox.value);\n          if (checkbox.tooltip) {\n            label.attr('title', checkbox.tooltip);\n          }\n          chkbx.prop('checked', Boolean(checkbox.checked));\n          div.append($('<div>').append(label));\n        }\n        $.each(opts || [], function (opt, val) {\n          if (typeof val === 'object') {\n            ctrl.append($('<option>').val(val.value).html(val.text));\n          } else {\n            ctrl.append($('<option>').html(val));\n          }\n        });\n        dialogContent.append(div);\n        if (defaultVal) {\n          ctrl.val(defaultVal);\n        }\n        if (changeListener) {\n          ctrl.bind('change', 'return', changeListener);\n        }\n        ctrl.bind('keydown', 'return', function () { ok.click(); });\n      } else if (type === 'process') {\n        ok.hide();\n      }\n\n      box.show();\n\n      ok.click(function () {\n        box.hide();\n        const response = (type === 'prompt' || type === 'select') ? ctrl.val() : true;\n        if (chkbx) {\n          resolve({response, checked: chkbx.prop('checked')});\n          return;\n        }\n        resolve(response);\n      }).focus();\n\n      if (type === 'prompt' || type === 'select') {\n        ctrl.focus();\n      }\n    });\n  }\n\n  /**\n  * @param {string} msg Message to alert\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.alert = function (msg) {\n    return dbox('alert', msg);\n  };\n  /**\n  * @param {string} msg Message for which to ask confirmation\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.confirm = function (msg) {\n    return dbox('confirm', msg);\n  };\n  /**\n  * @param {string} msg Message to indicate upon cancelable indicator\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.process_cancel = function (msg) {\n    return dbox('process', msg);\n  };\n  /**\n  * @param {string} msg Message to accompany the prompt\n  * @param {string} [defaultText=''] The default text to show for the prompt\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.prompt = function (msg, defaultText = '') {\n    return dbox('prompt', msg, defaultText);\n  };\n  $.select = function (msg, opts, changeListener, txt, checkbox) {\n    return dbox('select', msg, txt, opts, changeListener, checkbox);\n  };\n  return $;\n}\n","/* globals jQuery */\n/**\n * Provides tools for the layer concept\n * @module layer\n * @license MIT\n *\n * @copyright 2011 Jeff Schiller, 2016 Flint O'Brien\n */\n\nimport {NS} from './namespaces.js';\nimport {toXml, walkTree, isNullish} from './utilities.js';\n\nconst $ = jQuery;\n\n/**\n * This class encapsulates the concept of a layer in the drawing. It can be constructed with\n * an existing group element or, with three parameters, will create a new layer group element.\n *\n * @example\n * new Layer('name', group);          // Use the existing group for this layer.\n * new Layer('name', group, svgElem); // Create a new group and add it to the DOM after group.\n * new Layer('name', null, svgElem);  // Create a new group and add it to the DOM as the last layer.\n * @memberof module:layer\n */\nclass Layer {\n  /**\n  * @param {string} name - Layer name\n  * @param {SVGGElement|null} group - An existing SVG group element or null.\n  *     If group and no svgElem, use group for this layer.\n  *     If group and svgElem, create a new group element and insert it in the DOM after group.\n  *     If no group and svgElem, create a new group element and insert it in the DOM as the last layer.\n  * @param {SVGGElement=} svgElem - The SVG DOM element. If defined, use this to add\n  *     a new layer to the document.\n  */\n  constructor (name, group, svgElem) {\n    this.name_ = name;\n    this.group_ = svgElem ? null : group;\n\n    if (svgElem) {\n      // Create a group element with title and add it to the DOM.\n      const svgdoc = svgElem.ownerDocument;\n      this.group_ = svgdoc.createElementNS(NS.SVG, 'g');\n      const layerTitle = svgdoc.createElementNS(NS.SVG, 'title');\n      layerTitle.textContent = name;\n      this.group_.append(layerTitle);\n      if (group) {\n        $(group).after(this.group_);\n      } else {\n        svgElem.append(this.group_);\n      }\n    }\n\n    addLayerClass(this.group_);\n    walkTree(this.group_, function (e) {\n      e.setAttribute('style', 'pointer-events:inherit');\n    });\n\n    this.group_.setAttribute('style', svgElem ? 'pointer-events:all' : 'pointer-events:none');\n  }\n\n  /**\n   * Get the layer's name.\n   * @returns {string} The layer name\n   */\n  getName () {\n    return this.name_;\n  }\n\n  /**\n   * Get the group element for this layer.\n   * @returns {SVGGElement} The layer SVG group\n   */\n  getGroup () {\n    return this.group_;\n  }\n\n  /**\n   * Active this layer so it takes pointer events.\n   * @returns {undefined}\n   */\n  activate () {\n    this.group_.setAttribute('style', 'pointer-events:all');\n  }\n\n  /**\n   * Deactive this layer so it does NOT take pointer events.\n   * @returns {undefined}\n   */\n  deactivate () {\n    this.group_.setAttribute('style', 'pointer-events:none');\n  }\n\n  /**\n   * Set this layer visible or hidden based on 'visible' parameter.\n   * @param {boolean} visible - If true, make visible; otherwise, hide it.\n   * @returns {undefined}\n   */\n  setVisible (visible) {\n    const expected = visible === undefined || visible ? 'inline' : 'none';\n    const oldDisplay = this.group_.getAttribute('display');\n    if (oldDisplay !== expected) {\n      this.group_.setAttribute('display', expected);\n    }\n  }\n\n  /**\n   * Is this layer visible?\n   * @returns {boolean} True if visible.\n   */\n  isVisible () {\n    return this.group_.getAttribute('display') !== 'none';\n  }\n\n  /**\n   * Get layer opacity.\n   * @returns {Float} Opacity value.\n   */\n  getOpacity () {\n    const opacity = this.group_.getAttribute('opacity');\n    if (isNullish(opacity)) {\n      return 1;\n    }\n    return parseFloat(opacity);\n  }\n\n  /**\n   * Sets the opacity of this layer. If opacity is not a value between 0.0 and 1.0,\n   * nothing happens.\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n   */\n  setOpacity (opacity) {\n    if (typeof opacity === 'number' && opacity >= 0.0 && opacity <= 1.0) {\n      this.group_.setAttribute('opacity', opacity);\n    }\n  }\n\n  /**\n   * Append children to this layer.\n   * @param {SVGGElement} children - The children to append to this layer.\n   * @returns {undefined}\n   */\n  appendChildren (children) {\n    for (let i = 0; i < children.length; ++i) {\n      this.group_.append(children[i]);\n    }\n  }\n\n  /**\n  * @returns {SVGTitleElement|null}\n  */\n  getTitleElement () {\n    const len = this.group_.childNodes.length;\n    for (let i = 0; i < len; ++i) {\n      const child = this.group_.childNodes.item(i);\n      if (child && child.tagName === 'title') {\n        return child;\n      }\n    }\n    return null;\n  }\n\n  /**\n   * Set the name of this layer.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setName (name, hrService) {\n    const previousName = this.name_;\n    name = toXml(name);\n    // now change the underlying title element contents\n    const title = this.getTitleElement();\n    if (title) {\n      $(title).empty();\n      title.textContent = name;\n      this.name_ = name;\n      if (hrService) {\n        hrService.changeElement(title, {'#text': previousName});\n      }\n      return this.name_;\n    }\n    return null;\n  }\n\n  /**\n   * Remove this layer's group from the DOM. No more functions on group can be called after this.\n   * @returns {SVGGElement} The layer SVG group that was just removed.\n   */\n  removeGroup () {\n    const parent = this.group_.parentNode;\n    const group = parent.removeChild(this.group_);\n    this.group_ = undefined;\n    return group;\n  }\n}\n/**\n * @property {string} CLASS_NAME - class attribute assigned to all layer groups.\n */\nLayer.CLASS_NAME = 'layer';\n\n/**\n * @property {RegExp} CLASS_REGEX - Used to test presence of class Layer.CLASS_NAME\n */\nLayer.CLASS_REGEX = new RegExp('(\\\\s|^)' + Layer.CLASS_NAME + '(\\\\s|$)');\n\n/**\n * Add class `Layer.CLASS_NAME` to the element (usually `class='layer'`).\n *\n * @param {SVGGElement} elem - The SVG element to update\n * @returns {undefined}\n */\nfunction addLayerClass (elem) {\n  const classes = elem.getAttribute('class');\n  if (isNullish(classes) || !classes.length) {\n    elem.setAttribute('class', Layer.CLASS_NAME);\n  } else if (!Layer.CLASS_REGEX.test(classes)) {\n    elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);\n  }\n}\n\nexport default Layer;\n","/**\n * HistoryRecordingService component of history\n * @module history\n * @license MIT\n * @copyright 2016 Flint O'Brien\n */\n\nimport {\n  BatchCommand, MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand\n} from './history.js';\n\n/**\n * History recording service.\n *\n * A self-contained service interface for recording history. Once injected, no other dependencies\n * or globals are required (example: UndoManager, command types, etc.). Easy to mock for unit tests.\n * Built on top of history classes in history.js.\n *\n * There is a simple start/end interface for batch commands.\n *\n * HistoryRecordingService.NO_HISTORY is a singleton that can be passed in to functions\n * that record history. This helps when the caller requires that no history be recorded.\n *\n * The following will record history: insert, batch, insert.\n * @example\n * hrService = new history.HistoryRecordingService(this.undoMgr);\n * hrService.insertElement(elem, text);         // add simple command to history.\n * hrService.startBatchCommand('create two elements');\n * hrService.changeElement(elem, attrs, text);  // add to batchCommand\n * hrService.changeElement(elem, attrs2, text); // add to batchCommand\n * hrService.endBatchCommand();                  // add batch command with two change commands to history.\n * hrService.insertElement(elem, text);         // add simple command to history.\n *\n * @example\n * // Note that all functions return this, so commands can be chained, like so:\n * hrService\n *   .startBatchCommand('create two elements')\n *   .insertElement(elem, text)\n *   .changeElement(elem, attrs, text)\n *   .endBatchCommand();\n *\n * @memberof module:history\n */\nclass HistoryRecordingService {\n  /**\n  * @param {history.UndoManager|null} undoManager - The undo manager.\n  *     A value of `null` is valid for cases where no history recording is required.\n  *     See singleton: {@link module:history.HistoryRecordingService.HistoryRecordingService.NO_HISTORY}\n  */\n  constructor (undoManager) {\n    this.undoManager_ = undoManager;\n    this.currentBatchCommand_ = null;\n    this.batchCommandStack_ = [];\n  }\n\n  /**\n   * Start a batch command so multiple commands can recorded as a single history command.\n   * Requires a corresponding call to endBatchCommand. Start and end commands can be nested.\n   *\n   * @param {string} text - Optional string describing the batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  startBatchCommand (text) {\n    if (!this.undoManager_) { return this; }\n    this.currentBatchCommand_ = new BatchCommand(text);\n    this.batchCommandStack_.push(this.currentBatchCommand_);\n    return this;\n  }\n\n  /**\n   * End a batch command and add it to the history or a parent batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  endBatchCommand () {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      const batchCommand = this.currentBatchCommand_;\n      this.batchCommandStack_.pop();\n      const {length: len} = this.batchCommandStack_;\n      this.currentBatchCommand_ = len ? this.batchCommandStack_[len - 1] : null;\n      this.addCommand_(batchCommand);\n    }\n    return this;\n  }\n\n  /**\n   * Add a `MoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was moved\n   * @param {Element} oldNextSibling - The element's next sibling before it was moved\n   * @param {Element} oldParent - The element's parent before it was moved\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  moveElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new MoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add an `InsertElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was added\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  insertElement (elem, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new InsertElementCommand(elem, text));\n    return this;\n  }\n\n  /**\n   * Add a `RemoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was removed\n   * @param {Element} oldNextSibling - The element's next sibling before it was removed\n   * @param {Element} oldParent - The element's parent before it was removed\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  removeElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new RemoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add a `ChangeElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was changed\n   * @param {module:history.CommandAttributes} attrs - An object with the attributes to be changed and the values they had *before* the change\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  changeElement (elem, attrs, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new ChangeElementCommand(elem, attrs, text));\n    return this;\n  }\n\n  /**\n   * Private function to add a command to the history or current batch command.\n   * @private\n   * @param {Command} cmd\n   * @returns {module:history.HistoryRecordingService|undefined}\n   */\n  addCommand_ (cmd) {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      this.currentBatchCommand_.addSubCommand(cmd);\n    } else {\n      this.undoManager_.addCommandToHistory(cmd);\n    }\n    return undefined;\n  }\n}\n/**\n * @memberof module:history.HistoryRecordingService\n * @property {module:history.HistoryRecordingService} NO_HISTORY - Singleton that can be passed to functions that record history, but the caller requires that no history be recorded.\n */\nHistoryRecordingService.NO_HISTORY = new HistoryRecordingService();\nexport default HistoryRecordingService;\n","/* globals jQuery */\n/**\n * Tools for drawing\n * @module draw\n * @license MIT\n * @copyright 2011 Jeff Schiller\n */\n\nimport Layer from './layer.js';\nimport HistoryRecordingService from './historyrecording.js';\n\nimport {NS} from './namespaces.js';\nimport {isOpera} from './browser.js';\nimport {\n  toXml, getElem,\n  copyElem as utilCopyElem\n} from './utilities.js';\nimport {\n  BatchCommand, RemoveElementCommand, MoveElementCommand, ChangeElementCommand\n} from './history.js';\n\nconst $ = jQuery;\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use'.split(',');\n\nconst RandomizeModes = {\n  LET_DOCUMENT_DECIDE: 0,\n  ALWAYS_RANDOMIZE: 1,\n  NEVER_RANDOMIZE: 2\n};\nlet randIds = RandomizeModes.LET_DOCUMENT_DECIDE;\n// Array with current disabled elements (for in-group editing)\nlet disabledElems = [];\n\n/**\n * Get a HistoryRecordingService.\n * @param {module:history.HistoryRecordingService} [hrService] - if exists, return it instead of creating a new service.\n * @returns {module:history.HistoryRecordingService}\n */\nfunction historyRecordingService (hrService) {\n  return hrService || new HistoryRecordingService(canvas_.undoMgr);\n}\n\n/**\n * Find the layer name in a group element.\n * @param {Element} group The group element to search in.\n * @returns {string} The layer name or empty string.\n */\nfunction findLayerNameInGroup (group) {\n  return $('title', group).text() ||\n    (isOpera() && group.querySelectorAll\n      // Hack for Opera 10.60\n      ? $(group.querySelectorAll('title')).text()\n      : '');\n}\n\n/**\n * Given a set of names, return a new unique name.\n * @param {string[]} existingLayerNames - Existing layer names.\n * @returns {string} - The new name.\n */\nfunction getNewLayerName (existingLayerNames) {\n  let i = 1;\n  // TODO(codedread): What about internationalization of \"Layer\"?\n  while (existingLayerNames.includes(('Layer ' + i))) { i++; }\n  return 'Layer ' + i;\n}\n\n/**\n * This class encapsulates the concept of a SVG-edit drawing.\n */\nexport class Drawing {\n  /**\n  * @param {SVGSVGElement} svgElem - The SVG DOM Element that this JS object\n  *     encapsulates.  If the svgElem has a se:nonce attribute on it, then\n  *     IDs will use the nonce as they are generated.\n  * @param {string} [optIdPrefix=svg_] - The ID prefix to use.\n  * @throws {Error} If not initialized with an SVG element\n  */\n  constructor (svgElem, optIdPrefix) {\n    if (!svgElem || !svgElem.tagName || !svgElem.namespaceURI ||\n      svgElem.tagName !== 'svg' || svgElem.namespaceURI !== NS.SVG) {\n      throw new Error('Error: svgedit.draw.Drawing instance initialized without a <svg> element');\n    }\n\n    /**\n    * The SVG DOM Element that represents this drawing.\n    * @type {SVGSVGElement}\n    */\n    this.svgElem_ = svgElem;\n\n    /**\n    * The latest object number used in this drawing.\n    * @type {Integer}\n    */\n    this.obj_num = 0;\n\n    /**\n    * The prefix to prepend to each element id in the drawing.\n    * @type {string}\n    */\n    this.idPrefix = optIdPrefix || 'svg_';\n\n    /**\n    * An array of released element ids to immediately reuse.\n    * @type {Integer[]}\n    */\n    this.releasedNums = [];\n\n    /**\n    * The z-ordered array of Layer objects. Each layer has a name\n    * and group element.\n    * The first layer is the one at the bottom of the rendering.\n    * @type {Layer[]}\n    */\n    this.all_layers = [];\n\n    /**\n    * Map of all_layers by name.\n    *\n    * Note: Layers are ordered, but referenced externally by name; so, we need both container\n    * types depending on which function is called (i.e. all_layers and layer_map).\n    *\n    * @type {PlainObject.<string, Layer>}\n    */\n    this.layer_map = {};\n\n    /**\n    * The current layer being used.\n    * @type {Layer}\n    */\n    this.current_layer = null;\n\n    /**\n    * The nonce to use to uniquely identify elements across drawings.\n    * @type {!String}\n    */\n    this.nonce_ = '';\n    const n = this.svgElem_.getAttributeNS(NS.SE, 'nonce');\n    // If already set in the DOM, use the nonce throughout the document\n    // else, if randomizeIds(true) has been called, create and set the nonce.\n    if (n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {\n      this.nonce_ = n;\n    } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {\n      this.setNonce(Math.floor(Math.random() * 100001));\n    }\n  }\n\n  /**\n   * @param {string} id Element ID to retrieve\n   * @returns {Element} SVG element within the root SVGSVGElement\n  */\n  getElem_ (id) {\n    if (this.svgElem_.querySelector) {\n      // querySelector lookup\n      return this.svgElem_.querySelector('#' + id);\n    }\n    // jQuery lookup: twice as slow as xpath in FF\n    return $(this.svgElem_).find('[id=' + id + ']')[0];\n  }\n\n  /**\n   * @returns {SVGSVGElement}\n   */\n  getSvgElem () {\n    return this.svgElem_;\n  }\n\n  /**\n   * @returns {!(string|Integer)} The previously set nonce\n   */\n  getNonce () {\n    return this.nonce_;\n  }\n\n  /**\n   * @param {!(string|Integer)} n The nonce to set\n   * @returns {undefined}\n   */\n  setNonce (n) {\n    this.svgElem_.setAttributeNS(NS.XMLNS, 'xmlns:se', NS.SE);\n    this.svgElem_.setAttributeNS(NS.SE, 'se:nonce', n);\n    this.nonce_ = n;\n  }\n\n  /**\n   * Clears any previously set nonce.\n   * @returns {undefined}\n   */\n  clearNonce () {\n    // We deliberately leave any se:nonce attributes alone,\n    // we just don't use it to randomize ids.\n    this.nonce_ = '';\n  }\n\n  /**\n   * Returns the latest object id as a string.\n   * @returns {string} The latest object Id.\n   */\n  getId () {\n    return this.nonce_\n      ? this.idPrefix + this.nonce_ + '_' + this.obj_num\n      : this.idPrefix + this.obj_num;\n  }\n\n  /**\n   * Returns the next object Id as a string.\n   * @returns {string} The next object Id to use.\n   */\n  getNextId () {\n    const oldObjNum = this.obj_num;\n    let restoreOldObjNum = false;\n\n    // If there are any released numbers in the release stack,\n    // use the last one instead of the next obj_num.\n    // We need to temporarily use obj_num as that is what getId() depends on.\n    if (this.releasedNums.length > 0) {\n      this.obj_num = this.releasedNums.pop();\n      restoreOldObjNum = true;\n    } else {\n      // If we are not using a released id, then increment the obj_num.\n      this.obj_num++;\n    }\n\n    // Ensure the ID does not exist.\n    let id = this.getId();\n    while (this.getElem_(id)) {\n      if (restoreOldObjNum) {\n        this.obj_num = oldObjNum;\n        restoreOldObjNum = false;\n      }\n      this.obj_num++;\n      id = this.getId();\n    }\n    // Restore the old object number if required.\n    if (restoreOldObjNum) {\n      this.obj_num = oldObjNum;\n    }\n    return id;\n  }\n\n  /**\n   * Releases the object Id, letting it be used as the next id in getNextId().\n   * This method DOES NOT remove any elements from the DOM, it is expected\n   * that client code will do this.\n   * @param {string} id - The id to release.\n   * @returns {boolean} True if the id was valid to be released, false otherwise.\n  */\n  releaseId (id) {\n    // confirm if this is a valid id for this Document, else return false\n    const front = this.idPrefix + (this.nonce_ ? this.nonce_ + '_' : '');\n    if (typeof id !== 'string' || !id.startsWith(front)) {\n      return false;\n    }\n    // extract the obj_num of this id\n    const num = parseInt(id.substr(front.length));\n\n    // if we didn't get a positive number or we already released this number\n    // then return false.\n    if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {\n      return false;\n    }\n\n    // push the released number into the released queue\n    this.releasedNums.push(num);\n\n    return true;\n  }\n\n  /**\n   * Returns the number of layers in the current drawing.\n   * @returns {Integer} The number of layers in the current drawing.\n  */\n  getNumLayers () {\n    return this.all_layers.length;\n  }\n\n  /**\n   * Check if layer with given name already exists.\n   * @param {string} name - The layer name to check\n   * @returns {boolean}\n  */\n  hasLayer (name) {\n    return this.layer_map[name] !== undefined;\n  }\n\n  /**\n   * Returns the name of the ith layer. If the index is out of range, an empty string is returned.\n   * @param {Integer} i - The zero-based index of the layer you are querying.\n   * @returns {string} The name of the ith layer (or the empty string if none found)\n  */\n  getLayerName (i) {\n    return i >= 0 && i < this.getNumLayers() ? this.all_layers[i].getName() : '';\n  }\n\n  /**\n   * @returns {SVGGElement|null} The SVGGElement representing the current layer.\n   */\n  getCurrentLayer () {\n    return this.current_layer ? this.current_layer.getGroup() : null;\n  }\n\n  /**\n   * Get a layer by name.\n   * @param {string} name\n   * @returns {SVGGElement} The SVGGElement representing the named layer or null.\n   */\n  getLayerByName (name) {\n    const layer = this.layer_map[name];\n    return layer ? layer.getGroup() : null;\n  }\n\n  /**\n   * Returns the name of the currently selected layer. If an error occurs, an empty string\n   * is returned.\n   * @returns {string} The name of the currently active layer (or the empty string if none found).\n  */\n  getCurrentLayerName () {\n    return this.current_layer ? this.current_layer.getName() : '';\n  }\n\n  /**\n   * Set the current layer's name.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setCurrentLayerName (name, hrService) {\n    let finalName = null;\n    if (this.current_layer) {\n      const oldName = this.current_layer.getName();\n      finalName = this.current_layer.setName(name, hrService);\n      if (finalName) {\n        delete this.layer_map[oldName];\n        this.layer_map[finalName] = this.current_layer;\n      }\n    }\n    return finalName;\n  }\n\n  /**\n   * Set the current layer's position.\n   * @param {Integer} newpos - The zero-based index of the new position of the layer. Range should be 0 to layers-1\n   * @returns {{title: SVGGElement, previousName: string}|null} If the name was changed, returns {title:SVGGElement, previousName:string}; otherwise null.\n   */\n  setCurrentLayerPosition (newpos) {\n    const layerCount = this.getNumLayers();\n    if (!this.current_layer || newpos < 0 || newpos >= layerCount) {\n      return null;\n    }\n\n    let oldpos;\n    for (oldpos = 0; oldpos < layerCount; ++oldpos) {\n      if (this.all_layers[oldpos] === this.current_layer) { break; }\n    }\n    // some unknown error condition (current_layer not in all_layers)\n    if (oldpos === layerCount) { return null; }\n\n    if (oldpos !== newpos) {\n      // if our new position is below us, we need to insert before the node after newpos\n      const currentGroup = this.current_layer.getGroup();\n      const oldNextSibling = currentGroup.nextSibling;\n\n      let refGroup = null;\n      if (newpos > oldpos) {\n        if (newpos < layerCount - 1) {\n          refGroup = this.all_layers[newpos + 1].getGroup();\n        }\n      // if our new position is above us, we need to insert before the node at newpos\n      } else {\n        refGroup = this.all_layers[newpos].getGroup();\n      }\n      this.svgElem_.insertBefore(currentGroup, refGroup); // Ok to replace with `refGroup.before(currentGroup);`?\n\n      this.identifyLayers();\n      this.setCurrentLayer(this.getLayerName(newpos));\n\n      return {\n        currentGroup,\n        oldNextSibling\n      };\n    }\n    return null;\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeLayer (hrService) {\n    const currentGroup = this.current_layer.getGroup();\n    const prevGroup = $(currentGroup).prev()[0];\n    if (!prevGroup) { return; }\n\n    hrService.startBatchCommand('Merge Layer');\n\n    const layerNextSibling = currentGroup.nextSibling;\n    hrService.removeElement(currentGroup, layerNextSibling, this.svgElem_);\n\n    while (currentGroup.firstChild) {\n      const child = currentGroup.firstChild;\n      if (child.localName === 'title') {\n        hrService.removeElement(child, child.nextSibling, currentGroup);\n        child.remove();\n        continue;\n      }\n      const oldNextSibling = child.nextSibling;\n      prevGroup.append(child);\n      hrService.moveElement(child, oldNextSibling, currentGroup);\n    }\n\n    // Remove current layer's group\n    this.current_layer.removeGroup();\n    // Remove the current layer and set the previous layer as the new current layer\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index > 0) {\n      const name = this.current_layer.getName();\n      this.current_layer = this.all_layers[index - 1];\n      this.all_layers.splice(index, 1);\n      delete this.layer_map[name];\n    }\n\n    hrService.endBatchCommand();\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeAllLayers (hrService) {\n    // Set the current layer to the last layer.\n    this.current_layer = this.all_layers[this.all_layers.length - 1];\n\n    hrService.startBatchCommand('Merge all Layers');\n    while (this.all_layers.length > 1) {\n      this.mergeLayer(hrService);\n    }\n    hrService.endBatchCommand();\n  }\n\n  /**\n   * Sets the current layer. If the name is not a valid layer name, then this\n   * function returns `false`. Otherwise it returns `true`. This is not an\n   * undo-able action.\n   * @param {string} name - The name of the layer you want to switch to.\n   * @returns {boolean} `true` if the current layer was switched, otherwise `false`\n   */\n  setCurrentLayer (name) {\n    const layer = this.layer_map[name];\n    if (layer) {\n      if (this.current_layer) {\n        this.current_layer.deactivate();\n      }\n      this.current_layer = layer;\n      this.current_layer.activate();\n      return true;\n    }\n    return false;\n  }\n\n  /**\n   * Deletes the current layer from the drawing and then clears the selection.\n   * This function then calls the 'changed' handler.  This is an undoable action.\n   * @todo Does this actually call the 'changed' handler?\n   * @returns {SVGGElement} The SVGGElement of the layer removed or null.\n   */\n  deleteCurrentLayer () {\n    if (this.current_layer && this.getNumLayers() > 1) {\n      const oldLayerGroup = this.current_layer.removeGroup();\n      this.identifyLayers();\n      return oldLayerGroup;\n    }\n    return null;\n  }\n\n  /**\n   * Updates layer system and sets the current layer to the\n   * top-most layer (last `<g>` child of this drawing).\n   * @returns {undefined}\n  */\n  identifyLayers () {\n    this.all_layers = [];\n    this.layer_map = {};\n    const numchildren = this.svgElem_.childNodes.length;\n    // loop through all children of SVG element\n    const orphans = [], layernames = [];\n    let layer = null;\n    let childgroups = false;\n    for (let i = 0; i < numchildren; ++i) {\n      const child = this.svgElem_.childNodes.item(i);\n      // for each g, find its layer name\n      if (child && child.nodeType === 1) {\n        if (child.tagName === 'g') {\n          childgroups = true;\n          const name = findLayerNameInGroup(child);\n          if (name) {\n            layernames.push(name);\n            layer = new Layer(name, child);\n            this.all_layers.push(layer);\n            this.layer_map[name] = layer;\n          } else {\n            // if group did not have a name, it is an orphan\n            orphans.push(child);\n          }\n        } else if (visElems.includes(child.nodeName)) {\n          // Child is \"visible\" (i.e. not a <title> or <defs> element), so it is an orphan\n          orphans.push(child);\n        }\n      }\n    }\n\n    // If orphans or no layers found, create a new layer and add all the orphans to it\n    if (orphans.length > 0 || !childgroups) {\n      layer = new Layer(getNewLayerName(layernames), null, this.svgElem_);\n      layer.appendChildren(orphans);\n      this.all_layers.push(layer);\n      this.layer_map[name] = layer;\n    } else {\n      layer.activate();\n    }\n    this.current_layer = layer;\n  }\n\n  /**\n   * Creates a new top-level layer in the drawing with the given name and\n   * makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  createLayer (name, hrService) {\n    if (this.current_layer) {\n      this.current_layer.deactivate();\n    }\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Crate new layer and add to DOM as last layer\n    const layer = new Layer(name, null, this.svgElem_);\n    // Like to assume hrService exists, but this is backwards compatible with old version of createLayer.\n    if (hrService) {\n      hrService.startBatchCommand('Create Layer');\n      hrService.insertElement(layer.getGroup());\n      hrService.endBatchCommand();\n    }\n\n    this.all_layers.push(layer);\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return layer.getGroup();\n  }\n\n  /**\n   * Creates a copy of the current layer with the given name and makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  cloneLayer (name, hrService) {\n    if (!this.current_layer) { return null; }\n    this.current_layer.deactivate();\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Create new group and add to DOM just after current_layer\n    const currentGroup = this.current_layer.getGroup();\n    const layer = new Layer(name, currentGroup, this.svgElem_);\n    const group = layer.getGroup();\n\n    // Clone children\n    const children = currentGroup.childNodes;\n    for (let index = 0; index < children.length; index++) {\n      const ch = children[index];\n      if (ch.localName === 'title') { continue; }\n      group.append(this.copyElem(ch));\n    }\n\n    if (hrService) {\n      hrService.startBatchCommand('Duplicate Layer');\n      hrService.insertElement(group);\n      hrService.endBatchCommand();\n    }\n\n    // Update layer containers and current_layer.\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index >= 0) {\n      this.all_layers.splice(index + 1, 0, layer);\n    } else {\n      this.all_layers.push(layer);\n    }\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return group;\n  }\n\n  /**\n   * Returns whether the layer is visible.  If the layer name is not valid,\n   * then this function returns `false`.\n   * @param {string} layerName - The name of the layer which you want to query.\n   * @returns {boolean} The visibility state of the layer, or `false` if the layer name was invalid.\n  */\n  getLayerVisibility (layerName) {\n    const layer = this.layer_map[layerName];\n    return layer ? layer.isVisible() : false;\n  }\n\n  /**\n   * Sets the visibility of the layer. If the layer name is not valid, this\n   * function returns `null`, otherwise it returns the `SVGElement` representing\n   * the layer. This is an undo-able action.\n   * @param {string} layerName - The name of the layer to change the visibility\n   * @param {boolean} bVisible - Whether the layer should be visible\n   * @returns {?SVGGElement} The SVGGElement representing the layer if the\n   *   `layerName` was valid, otherwise `null`.\n  */\n  setLayerVisibility (layerName, bVisible) {\n    if (typeof bVisible !== 'boolean') {\n      return null;\n    }\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    layer.setVisible(bVisible);\n    return layer.getGroup();\n  }\n\n  /**\n   * Returns the opacity of the given layer.  If the input name is not a layer, `null` is returned.\n   * @param {string} layerName - name of the layer on which to get the opacity\n   * @returns {?Float} The opacity value of the given layer.  This will be a value between 0.0 and 1.0, or `null`\n   * if `layerName` is not a valid layer\n  */\n  getLayerOpacity (layerName) {\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    return layer.getOpacity();\n  }\n\n  /**\n   * Sets the opacity of the given layer.  If the input name is not a layer,\n   * nothing happens. If opacity is not a value between 0.0 and 1.0, then\n   * nothing happens.\n   * NOTE: this function exists solely to apply a highlighting/de-emphasis\n   * effect to a layer. When it is possible for a user to affect the opacity\n   * of a layer, we will need to allow this function to produce an undo-able\n   * action.\n   * @param {string} layerName - Name of the layer on which to set the opacity\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n  */\n  setLayerOpacity (layerName, opacity) {\n    if (typeof opacity !== 'number' || opacity < 0.0 || opacity > 1.0) {\n      return;\n    }\n    const layer = this.layer_map[layerName];\n    if (layer) {\n      layer.setOpacity(opacity);\n    }\n  }\n\n  /**\n   * Create a clone of an element, updating its ID and its children's IDs when needed.\n   * @param {Element} el - DOM element to clone\n   * @returns {Element}\n   */\n  copyElem (el) {\n    const that = this;\n    const getNextIdClosure = function () { return that.getNextId(); };\n    return utilCopyElem(el, getNextIdClosure);\n  }\n}\n\n/**\n * Called to ensure that drawings will or will not have randomized ids.\n * The currentDrawing will have its nonce set if it doesn't already.\n * @function module:draw.randomizeIds\n * @param {boolean} enableRandomization - flag indicating if documents should have randomized ids\n * @param {draw.Drawing} currentDrawing\n * @returns {undefined}\n */\nexport const randomizeIds = function (enableRandomization, currentDrawing) {\n  randIds = enableRandomization === false\n    ? RandomizeModes.NEVER_RANDOMIZE\n    : RandomizeModes.ALWAYS_RANDOMIZE;\n\n  if (randIds === RandomizeModes.ALWAYS_RANDOMIZE && !currentDrawing.getNonce()) {\n    currentDrawing.setNonce(Math.floor(Math.random() * 100001));\n  } else if (randIds === RandomizeModes.NEVER_RANDOMIZE && currentDrawing.getNonce()) {\n    currentDrawing.clearNonce();\n  }\n};\n\n// Layer API Functions\n\n/**\n* Group: Layers\n*/\n\n/**\n * @see {@link https://api.jquery.com/jQuery.data/}\n * @name external:jQuery.data\n */\n\n/**\n * @interface module:draw.DrawCanvasInit\n * @property {module:path.pathActions} pathActions\n * @property {external:jQuery.data} elData\n * @property {module:history.UndoManager} undoMgr\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentGroup\n * @returns {Element}\n */\n/**\n * @function module:draw.DrawCanvasInit#setCurrentGroup\n * @param {Element} cg\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentDrawing\n * @returns {module:draw.Drawing}\n */\n/**\n * @function module:draw.DrawCanvasInit#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * Run the callback function associated with the given event\n * @function module:draw.DrawCanvasInit#call\n * @param {\"changed\"|\"contextset\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset} arg - Argument to pass through to the callback\n * function. If the event is \"changed\", a (single-item) array of `Element`s is\n * passed. If the event is \"contextset\", the arg is `null` or `Element`.\n * @returns {undefined}\n */\n/**\n * @function module:draw.DrawCanvasInit#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#changeSVGContent\n * @returns {undefined}\n */\n\nlet canvas_;\n/**\n* @function module:draw.init\n* @param {module:draw.DrawCanvasInit} canvas\n* @returns {undefined}\n*/\nexport const init = function (canvas) {\n  canvas_ = canvas;\n};\n\n/**\n* Updates layer system.\n* @function module:draw.identifyLayers\n* @returns {undefined}\n*/\nexport const identifyLayers = function () {\n  leaveContext();\n  canvas_.getCurrentDrawing().identifyLayers();\n};\n\n/**\n* Creates a new top-level layer in the drawing with the given name, sets the current layer\n* to it, and then clears the selection. This function then calls the 'changed' handler.\n* This is an undoable action.\n* @function module:draw.createLayer\n* @param {string} name - The given name\n* @param {module:history.HistoryRecordingService} hrService\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nexport const createLayer = function (name, hrService) {\n  const newLayer = canvas_.getCurrentDrawing().createLayer(\n    name,\n    historyRecordingService(hrService)\n  );\n  canvas_.clearSelection();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n * Creates a new top-level layer in the drawing with the given name, copies all the current layer's contents\n * to it, and then clears the selection. This function then calls the 'changed' handler.\n * This is an undoable action.\n * @function module:draw.cloneLayer\n * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n * @param {module:history.HistoryRecordingService} hrService - History recording service\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @returns {undefined}\n */\nexport const cloneLayer = function (name, hrService) {\n  // Clone the current layer and make the cloned layer the new current layer\n  const newLayer = canvas_.getCurrentDrawing().cloneLayer(name, historyRecordingService(hrService));\n\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n* Deletes the current layer from the drawing and then clears the selection. This function\n* then calls the 'changed' handler. This is an undoable action.\n* @function module:draw.deleteCurrentLayer\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} `true` if an old layer group was found to delete\n*/\nexport const deleteCurrentLayer = function () {\n  let currentLayer = canvas_.getCurrentDrawing().getCurrentLayer();\n  const {nextSibling} = currentLayer;\n  const parent = currentLayer.parentNode;\n  currentLayer = canvas_.getCurrentDrawing().deleteCurrentLayer();\n  if (currentLayer) {\n    const batchCmd = new BatchCommand('Delete Layer');\n    // store in our Undo History\n    batchCmd.addSubCommand(new RemoveElementCommand(currentLayer, nextSibling, parent));\n    canvas_.addCommandToHistory(batchCmd);\n    canvas_.clearSelection();\n    canvas_.call('changed', [parent]);\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the current layer. If the name is not a valid layer name, then this function returns\n* false. Otherwise it returns true. This is not an undo-able action.\n* @function module:draw.setCurrentLayer\n* @param {string} name - The name of the layer you want to switch to.\n* @returns {boolean} true if the current layer was switched, otherwise false\n*/\nexport const setCurrentLayer = function (name) {\n  const result = canvas_.getCurrentDrawing().setCurrentLayer(toXml(name));\n  if (result) {\n    canvas_.clearSelection();\n  }\n  return result;\n};\n\n/**\n* Renames the current layer. If the layer name is not valid (i.e. unique), then this function\n* does nothing and returns `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.renameCurrentLayer\n* @param {string} newName - the new name you want to give the current layer. This name must\n* be unique among all layer names.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Whether the rename succeeded\n*/\nexport const renameCurrentLayer = function (newName) {\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getCurrentLayer();\n  if (layer) {\n    const result = drawing.setCurrentLayerName(newName, historyRecordingService());\n    if (result) {\n      canvas_.call('changed', [layer]);\n      return true;\n    }\n  }\n  return false;\n};\n\n/**\n* Changes the position of the current layer to the new value. If the new index is not valid,\n* this function does nothing and returns false, otherwise it returns true. This is an\n* undo-able action.\n* @function module:draw.setCurrentLayerPosition\n* @param {Integer} newPos - The zero-based index of the new position of the layer. This should be between\n* 0 and (number of layers - 1)\n* @returns {boolean} `true` if the current layer position was changed, `false` otherwise.\n*/\nexport const setCurrentLayerPosition = function (newPos) {\n  const drawing = canvas_.getCurrentDrawing();\n  const result = drawing.setCurrentLayerPosition(newPos);\n  if (result) {\n    canvas_.addCommandToHistory(new MoveElementCommand(result.currentGroup, result.oldNextSibling, canvas_.getSVGContent()));\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the visibility of the layer. If the layer name is not valid, this function return\n* `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.setLayerVisibility\n* @param {string} layerName - The name of the layer to change the visibility\n* @param {boolean} bVisible - Whether the layer should be visible\n* @returns {boolean} true if the layer's visibility was set, false otherwise\n*/\nexport const setLayerVisibility = function (layerName, bVisible) {\n  const drawing = canvas_.getCurrentDrawing();\n  const prevVisibility = drawing.getLayerVisibility(layerName);\n  const layer = drawing.setLayerVisibility(layerName, bVisible);\n  if (layer) {\n    const oldDisplay = prevVisibility ? 'inline' : 'none';\n    canvas_.addCommandToHistory(new ChangeElementCommand(layer, {display: oldDisplay}, 'Layer Visibility'));\n  } else {\n    return false;\n  }\n\n  if (layer === drawing.getCurrentLayer()) {\n    canvas_.clearSelection();\n    canvas_.pathActions.clear();\n  }\n  // call('changed', [selected]);\n  return true;\n};\n\n/**\n* Moves the selected elements to layerName. If the name is not a valid layer name, then `false`\n* is returned. Otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.moveSelectedToLayer\n* @param {string} layerName - The name of the layer you want to which you want to move the selected elements\n* @returns {boolean} Whether the selected elements were moved to the layer.\n*/\nexport const moveSelectedToLayer = function (layerName) {\n  // find the layer\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getLayerByName(layerName);\n  if (!layer) { return false; }\n\n  const batchCmd = new BatchCommand('Move Elements to Layer');\n\n  // loop for each selected element and move it\n  const selElems = canvas_.getSelectedElements();\n  let i = selElems.length;\n  while (i--) {\n    const elem = selElems[i];\n    if (!elem) { continue; }\n    const oldNextSibling = elem.nextSibling;\n    // TODO: this is pretty brittle!\n    const oldLayer = elem.parentNode;\n    layer.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldLayer));\n  }\n\n  canvas_.addCommandToHistory(batchCmd);\n\n  return true;\n};\n\n/**\n* @function module:draw.mergeLayer\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeLayer = function (hrService) {\n  canvas_.getCurrentDrawing().mergeLayer(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* @function module:draw.mergeAllLayers\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeAllLayers = function (hrService) {\n  canvas_.getCurrentDrawing().mergeAllLayers(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* Return from a group context to the regular kind, make any previously\n* disabled elements enabled again.\n* @function module:draw.leaveContext\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const leaveContext = function () {\n  const len = disabledElems.length;\n  if (len) {\n    for (let i = 0; i < len; i++) {\n      const elem = disabledElems[i];\n      const orig = canvas_.elData(elem, 'orig_opac');\n      if (orig !== 1) {\n        elem.setAttribute('opacity', orig);\n      } else {\n        elem.removeAttribute('opacity');\n      }\n      elem.setAttribute('style', 'pointer-events: inherit');\n    }\n    disabledElems = [];\n    canvas_.clearSelection(true);\n    canvas_.call('contextset', null);\n  }\n  canvas_.setCurrentGroup(null);\n};\n\n/**\n* Set the current context (for in-group editing).\n* @function module:draw.setContext\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const setContext = function (elem) {\n  leaveContext();\n  if (typeof elem === 'string') {\n    elem = getElem(elem);\n  }\n\n  // Edit inside this group\n  canvas_.setCurrentGroup(elem);\n\n  // Disable other elements\n  $(elem).parentsUntil('#svgcontent').andSelf().siblings().each(function () {\n    const opac = this.getAttribute('opacity') || 1;\n    // Store the original's opacity\n    canvas_.elData(this, 'orig_opac', opac);\n    this.setAttribute('opacity', opac * 0.33);\n    this.setAttribute('style', 'pointer-events: none');\n    disabledElems.push(this);\n  });\n\n  canvas_.clearSelection();\n  canvas_.call('contextset', canvas_.getCurrentGroup());\n};\n\n/**\n* @memberof module:draw\n* @class Layer\n* @see {@link module:layer.Layer}\n*/\nexport {Layer};\n","/**\n * Tools for SVG sanitization\n * @module sanitize\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {getReverseNS, NS} from './namespaces.js';\nimport {isGecko} from './browser.js';\nimport {getHref, setHref, getUrlFromAttr} from './utilities.js';\n\nconst REVERSE_NS = getReverseNS();\n\n// this defines which elements and attributes that we support\nconst svgWhiteList_ = {\n  // SVG Elements\n  a: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'xlink:href', 'xlink:title'],\n  circle: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'r', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  clipPath: ['class', 'clipPathUnits', 'id'],\n  defs: [],\n  style: ['type'],\n  desc: [],\n  ellipse: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  feGaussianBlur: ['class', 'color-interpolation-filters', 'id', 'requiredFeatures', 'stdDeviation'],\n  filter: ['class', 'color-interpolation-filters', 'filterRes', 'filterUnits', 'height', 'id', 'primitiveUnits', 'requiredFeatures', 'width', 'x', 'xlink:href', 'y'],\n  foreignObject: ['class', 'font-size', 'height', 'id', 'opacity', 'requiredFeatures', 'style', 'transform', 'width', 'x', 'y'],\n  g: ['class', 'clip-path', 'clip-rule', 'id', 'display', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'font-family', 'font-size', 'font-style', 'font-weight', 'text-anchor'],\n  image: ['class', 'clip-path', 'clip-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'style', 'systemLanguage', 'transform', 'width', 'x', 'xlink:href', 'xlink:title', 'y'],\n  line: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'x1', 'x2', 'y1', 'y2'],\n  linearGradient: ['class', 'id', 'gradientTransform', 'gradientUnits', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'x1', 'x2', 'xlink:href', 'y1', 'y2'],\n  marker: ['id', 'class', 'markerHeight', 'markerUnits', 'markerWidth', 'orient', 'preserveAspectRatio', 'refX', 'refY', 'systemLanguage', 'viewBox'],\n  mask: ['class', 'height', 'id', 'maskContentUnits', 'maskUnits', 'width', 'x', 'y'],\n  metadata: ['class', 'id'],\n  path: ['class', 'clip-path', 'clip-rule', 'd', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  pattern: ['class', 'height', 'id', 'patternContentUnits', 'patternTransform', 'patternUnits', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xlink:href', 'y'],\n  polygon: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'class', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  polyline: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  radialGradient: ['class', 'cx', 'cy', 'fx', 'fy', 'gradientTransform', 'gradientUnits', 'id', 'r', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'xlink:href'],\n  rect: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'width', 'x', 'y'],\n  stop: ['class', 'id', 'offset', 'requiredFeatures', 'stop-color', 'stop-opacity', 'style', 'systemLanguage'],\n  svg: ['class', 'clip-path', 'clip-rule', 'filter', 'id', 'height', 'mask', 'preserveAspectRatio', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xmlns', 'xmlns:se', 'xmlns:xlink', 'y'],\n  switch: ['class', 'id', 'requiredFeatures', 'systemLanguage'],\n  symbol: ['class', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'opacity', 'preserveAspectRatio', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'viewBox'],\n  text: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'transform', 'x', 'xml:space', 'y'],\n  textPath: ['class', 'id', 'method', 'requiredFeatures', 'spacing', 'startOffset', 'style', 'systemLanguage', 'transform', 'xlink:href'],\n  title: [],\n  tspan: ['class', 'clip-path', 'clip-rule', 'dx', 'dy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'rotate', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'textLength', 'transform', 'x', 'xml:space', 'y'],\n  use: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'transform', 'width', 'x', 'xlink:href', 'y'],\n\n  // MathML Elements\n  annotation: ['encoding'],\n  'annotation-xml': ['encoding'],\n  maction: ['actiontype', 'other', 'selection'],\n  math: ['class', 'id', 'display', 'xmlns'],\n  menclose: ['notation'],\n  merror: [],\n  mfrac: ['linethickness'],\n  mi: ['mathvariant'],\n  mmultiscripts: [],\n  mn: [],\n  mo: ['fence', 'lspace', 'maxsize', 'minsize', 'rspace', 'stretchy'],\n  mover: [],\n  mpadded: ['lspace', 'width', 'height', 'depth', 'voffset'],\n  mphantom: [],\n  mprescripts: [],\n  mroot: [],\n  mrow: ['xlink:href', 'xlink:type', 'xmlns:xlink'],\n  mspace: ['depth', 'height', 'width'],\n  msqrt: [],\n  mstyle: ['displaystyle', 'mathbackground', 'mathcolor', 'mathvariant', 'scriptlevel'],\n  msub: [],\n  msubsup: [],\n  msup: [],\n  mtable: ['align', 'columnalign', 'columnlines', 'columnspacing', 'displaystyle', 'equalcolumns', 'equalrows', 'frame', 'rowalign', 'rowlines', 'rowspacing', 'width'],\n  mtd: ['columnalign', 'columnspan', 'rowalign', 'rowspan'],\n  mtext: [],\n  mtr: ['columnalign', 'rowalign'],\n  munder: [],\n  munderover: [],\n  none: [],\n  semantics: []\n};\n\n// Produce a Namespace-aware version of svgWhitelist\nconst svgWhiteListNS_ = {};\nObject.entries(svgWhiteList_).forEach(function ([elt, atts]) {\n  const attNS = {};\n  Object.entries(atts).forEach(function ([i, att]) {\n    if (att.includes(':')) {\n      const v = att.split(':');\n      attNS[v[1]] = NS[(v[0]).toUpperCase()];\n    } else {\n      attNS[att] = att === 'xmlns' ? NS.XMLNS : null;\n    }\n  });\n  svgWhiteListNS_[elt] = attNS;\n});\n\n/**\n* Sanitizes the input node and its children.\n* It only keeps what is allowed from our whitelist defined above.\n* @function module:sanitize.sanitizeSvg\n* @param {Text|Element} node - The DOM element to be checked (we'll also check its children) or text node to be cleaned up\n* @returns {undefined}\n*/\nexport const sanitizeSvg = function (node) {\n  // Cleanup text nodes\n  if (node.nodeType === 3) { // 3 === TEXT_NODE\n    // Trim whitespace\n    node.nodeValue = node.nodeValue.replace(/^\\s+|\\s+$/g, '');\n    // Remove if empty\n    if (!node.nodeValue.length) {\n      node.remove();\n    }\n  }\n\n  // We only care about element nodes.\n  // Automatically return for all non-element nodes, such as comments, etc.\n  if (node.nodeType !== 1) { // 1 == ELEMENT_NODE\n    return;\n  }\n\n  const doc = node.ownerDocument;\n  const parent = node.parentNode;\n  // can parent ever be null here?  I think the root node's parent is the document...\n  if (!doc || !parent) {\n    return;\n  }\n\n  const allowedAttrs = svgWhiteList_[node.nodeName];\n  const allowedAttrsNS = svgWhiteListNS_[node.nodeName];\n  // if this element is supported, sanitize it\n  if (typeof allowedAttrs !== 'undefined') {\n    const seAttrs = [];\n    let i = node.attributes.length;\n    while (i--) {\n      // if the attribute is not in our whitelist, then remove it\n      // could use jQuery's inArray(), but I don't know if that's any better\n      const attr = node.attributes.item(i);\n      const attrName = attr.nodeName;\n      const attrLocalName = attr.localName;\n      const attrNsURI = attr.namespaceURI;\n      // Check that an attribute with the correct localName in the correct namespace is on\n      // our whitelist or is a namespace declaration for one of our allowed namespaces\n      if (!({}.hasOwnProperty.call(allowedAttrsNS, attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) &&\n        !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {\n        // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.\n        // Bypassing the whitelist to allow se: prefixes.\n        // Is there a more appropriate way to do this?\n        if (attrName.startsWith('se:') || attrName.startsWith('data-')) {\n          seAttrs.push([attrName, attr.value]);\n        }\n        node.removeAttributeNS(attrNsURI, attrLocalName);\n      }\n\n      // Add spaces before negative signs where necessary\n      if (isGecko()) {\n        switch (attrName) {\n        case 'transform':\n        case 'gradientTransform':\n        case 'patternTransform': {\n          const val = attr.value.replace(/(\\d)-/g, '$1 -');\n          node.setAttribute(attrName, val);\n          break;\n        }\n        }\n      }\n\n      // For the style attribute, rewrite it in terms of XML presentational attributes\n      if (attrName === 'style') {\n        const props = attr.value.split(';');\n        let p = props.length;\n        while (p--) {\n          const [name, val] = props[p].split(':');\n          const styleAttrName = (name || '').trim();\n          const styleAttrVal = (val || '').trim();\n          // Now check that this attribute is supported\n          if (allowedAttrs.includes(styleAttrName)) {\n            node.setAttribute(styleAttrName, styleAttrVal);\n          }\n        }\n        node.removeAttribute('style');\n      }\n    }\n\n    Object.values(seAttrs).forEach(([att, val]) => {\n      node.setAttributeNS(NS.SE, att, val);\n    });\n\n    // for some elements that have a xlink:href, ensure the URI refers to a local element\n    // (but not for links)\n    const href = getHref(node);\n    if (href &&\n      ['filter', 'linearGradient', 'pattern',\n        'radialGradient', 'textPath', 'use'].includes(node.nodeName)) {\n      // TODO: we simply check if the first character is a #, is this bullet-proof?\n      if (href[0] !== '#') {\n        // remove the attribute (but keep the element)\n        setHref(node, '');\n        node.removeAttributeNS(NS.XLINK, 'href');\n      }\n    }\n\n    // Safari crashes on a <use> without a xlink:href, so we just remove the node here\n    if (node.nodeName === 'use' && !getHref(node)) {\n      node.remove();\n      return;\n    }\n    // if the element has attributes pointing to a non-local reference,\n    // need to remove the attribute\n    Object.values(['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'], function (attr) {\n      let val = node.getAttribute(attr);\n      if (val) {\n        val = getUrlFromAttr(val);\n        // simply check for first character being a '#'\n        if (val && val[0] !== '#') {\n          node.setAttribute(attr, '');\n          node.removeAttribute(attr);\n        }\n      }\n    });\n\n    // recurse to children\n    i = node.childNodes.length;\n    while (i--) { sanitizeSvg(node.childNodes.item(i)); }\n  // else (element not supported), remove it\n  } else {\n    // remove all children from this node and insert them before this node\n    // FIXME: in the case of animation elements this will hardly ever be correct\n    const children = [];\n    while (node.hasChildNodes()) {\n      children.push(parent.insertBefore(node.firstChild, node));\n    }\n\n    // remove this node from the document altogether\n    node.remove();\n\n    // call sanitizeSvg on each of those children\n    let i = children.length;\n    while (i--) { sanitizeSvg(children[i]); }\n  }\n};\n","/* globals jQuery */\n/**\n * Recalculate.\n * @module recalculate\n * @license MIT\n */\n\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {convertToNum} from './units.js';\nimport {isWebkit} from './browser.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {getRotationAngle, getHref, getBBox, getRefElem, isNullish} from './utilities.js';\nimport {BatchCommand, ChangeElementCommand} from './history.js';\nimport {remapElement} from './coords.js';\nimport {\n  isIdentity, matrixMultiply, transformPoint, transformListToTransform,\n  hasMatrixTransform\n} from './math.js';\n\nconst $ = jQueryPluginSVG(jQuery);\n\nlet context_;\n\n/**\n* @interface module:recalculate.EditorContext\n*/\n/**\n * @function module:recalculate.EditorContext#getSVGRoot\n * @returns {SVGSVGElement} The root DOM element\n */\n/**\n * @function module:recalculate.EditorContext#getStartTransform\n * @returns {string}\n*/\n/**\n * @function module:recalculate.EditorContext#setStartTransform\n * @param {string} transform\n * @returns {undefined}\n */\n\n/**\n* @function module:recalculate.init\n* @param {module:recalculate.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  context_ = editorContext;\n};\n\n/**\n* Updates a `<clipPath>`s values based on the given translation of an element.\n* @function module:recalculate.updateClipPath\n* @param {string} attr - The clip-path attribute value with the clipPath's ID\n* @param {Float} tx - The translation's x value\n* @param {Float} ty - The translation's y value\n* @returns {undefined}\n*/\nexport const updateClipPath = function (attr, tx, ty) {\n  const path = getRefElem(attr).firstChild;\n  const cpXform = getTransformList(path);\n  const newxlate = context_.getSVGRoot().createSVGTransform();\n  newxlate.setTranslate(tx, ty);\n\n  cpXform.appendItem(newxlate);\n\n  // Update clipPath's dimensions\n  recalculateDimensions(path);\n};\n\n/**\n* Decides the course of action based on the element's transform list.\n* @function module:recalculate.recalculateDimensions\n* @param {Element} selected - The DOM element to recalculate\n* @returns {Command} Undo command object with the resulting change\n*/\nexport const recalculateDimensions = function (selected) {\n  if (isNullish(selected)) { return null; }\n\n  // Firefox Issue - 1081\n  if (selected.nodeName === 'svg' && navigator.userAgent.includes('Firefox/20')) {\n    return null;\n  }\n\n  const svgroot = context_.getSVGRoot();\n  const tlist = getTransformList(selected);\n\n  // remove any unnecessary transforms\n  if (tlist && tlist.numberOfItems > 0) {\n    let k = tlist.numberOfItems;\n    const noi = k;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 0) {\n        tlist.removeItem(k);\n      // remove identity matrices\n      } else if (xform.type === 1) {\n        if (isIdentity(xform.matrix)) {\n          if (noi === 1) {\n            // Overcome Chrome bug (though only when noi is 1) with\n            //    `removeItem` preventing `removeAttribute` from\n            //    subsequently working\n            // See https://bugs.chromium.org/p/chromium/issues/detail?id=843901\n            selected.removeAttribute('transform');\n            return null;\n          }\n          tlist.removeItem(k);\n        }\n      // remove zero-degree rotations\n      } else if (xform.type === 4) {\n        if (xform.angle === 0) {\n          tlist.removeItem(k);\n        }\n      }\n    }\n    // End here if all it has is a rotation\n    if (tlist.numberOfItems === 1 &&\n        getRotationAngle(selected)) { return null; }\n  }\n\n  // if this element had no transforms, we are done\n  if (!tlist || tlist.numberOfItems === 0) {\n    // Chrome apparently had a bug that requires clearing the attribute first.\n    selected.setAttribute('transform', '');\n    // However, this still next line currently doesn't work at all in Chrome\n    selected.removeAttribute('transform');\n    // selected.transform.baseVal.clear(); // Didn't help for Chrome bug\n    return null;\n  }\n\n  // TODO: Make this work for more than 2\n  if (tlist) {\n    let mxs = [];\n    let k = tlist.numberOfItems;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 1) {\n        mxs.push([xform.matrix, k]);\n      } else if (mxs.length) {\n        mxs = [];\n      }\n    }\n    if (mxs.length === 2) {\n      const mNew = svgroot.createSVGTransformFromMatrix(matrixMultiply(mxs[1][0], mxs[0][0]));\n      tlist.removeItem(mxs[0][1]);\n      tlist.removeItem(mxs[1][1]);\n      tlist.insertItemBefore(mNew, mxs[1][1]);\n    }\n\n    // combine matrix + translate\n    k = tlist.numberOfItems;\n    if (k >= 2 && tlist.getItem(k - 2).type === 1 && tlist.getItem(k - 1).type === 2) {\n      const mt = svgroot.createSVGTransform();\n\n      const m = matrixMultiply(\n        tlist.getItem(k - 2).matrix,\n        tlist.getItem(k - 1).matrix\n      );\n      mt.setMatrix(m);\n      tlist.removeItem(k - 2);\n      tlist.removeItem(k - 2);\n      tlist.appendItem(mt);\n    }\n  }\n\n  // If it still has a single [M] or [R][M], return null too (prevents BatchCommand from being returned).\n  switch (selected.tagName) {\n  // Ignore these elements, as they can absorb the [M]\n  case 'line':\n  case 'polyline':\n  case 'polygon':\n  case 'path':\n    break;\n  default:\n    if ((tlist.numberOfItems === 1 && tlist.getItem(0).type === 1) ||\n        (tlist.numberOfItems === 2 && tlist.getItem(0).type === 1 && tlist.getItem(0).type === 4)) {\n      return null;\n    }\n  }\n\n  // Grouped SVG element\n  const gsvg = $(selected).data('gsvg');\n\n  // we know we have some transforms, so set up return variable\n  const batchCmd = new BatchCommand('Transform');\n\n  // store initial values that will be affected by reducing the transform list\n  let changes = {};\n  let initial = null;\n  let attrs = [];\n  switch (selected.tagName) {\n  case 'line':\n    attrs = ['x1', 'y1', 'x2', 'y2'];\n    break;\n  case 'circle':\n    attrs = ['cx', 'cy', 'r'];\n    break;\n  case 'ellipse':\n    attrs = ['cx', 'cy', 'rx', 'ry'];\n    break;\n  case 'foreignObject':\n  case 'rect':\n  case 'image':\n    attrs = ['width', 'height', 'x', 'y'];\n    break;\n  case 'use':\n  case 'text':\n  case 'tspan':\n    attrs = ['x', 'y'];\n    break;\n  case 'polygon':\n  case 'polyline': {\n    initial = {};\n    initial.points = selected.getAttribute('points');\n    const list = selected.points;\n    const len = list.numberOfItems;\n    changes.points = new Array(len);\n    for (let i = 0; i < len; ++i) {\n      const pt = list.getItem(i);\n      changes.points[i] = {x: pt.x, y: pt.y};\n    }\n    break;\n  } case 'path':\n    initial = {};\n    initial.d = selected.getAttribute('d');\n    changes.d = selected.getAttribute('d');\n    break;\n  } // switch on element type to get initial values\n\n  if (attrs.length) {\n    changes = $(selected).attr(attrs);\n    $.each(changes, function (attr, val) {\n      changes[attr] = convertToNum(attr, val);\n    });\n  } else if (gsvg) {\n    // GSVG exception\n    changes = {\n      x: $(gsvg).attr('x') || 0,\n      y: $(gsvg).attr('y') || 0\n    };\n  }\n\n  // if we haven't created an initial array in polygon/polyline/path, then\n  // make a copy of initial values and include the transform\n  if (isNullish(initial)) {\n    initial = $.extend(true, {}, changes);\n    $.each(initial, function (attr, val) {\n      initial[attr] = convertToNum(attr, val);\n    });\n  }\n  // save the start transform value too\n  initial.transform = context_.getStartTransform() || '';\n\n  let oldcenter, newcenter;\n\n  // if it's a regular group, we have special processing to flatten transforms\n  if ((selected.tagName === 'g' && !gsvg) || selected.tagName === 'a') {\n    const box = getBBox(selected);\n\n    oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n    newcenter = transformPoint(\n      box.x + box.width / 2,\n      box.y + box.height / 2,\n      transformListToTransform(tlist).matrix\n    );\n    // let m = svgroot.createSVGMatrix();\n\n    // temporarily strip off the rotate and save the old center\n    const gangle = getRotationAngle(selected);\n    if (gangle) {\n      const a = gangle * Math.PI / 180;\n      let s;\n      if (Math.abs(a) > (1.0e-10)) {\n        s = Math.sin(a) / (1 - Math.cos(a));\n      } else {\n        // FIXME: This blows up if the angle is exactly 0!\n        s = 2 / a;\n      }\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n    const N = tlist.numberOfItems;\n    let tx = 0, ty = 0, operation = 0;\n\n    let firstM;\n    if (N) {\n      firstM = tlist.getItem(0).matrix;\n    }\n\n    let oldStartTransform;\n    // first, if it was a scale then the second-last transform will be it\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      operation = 3; // scale\n\n      // if the children are unrotated, pass the scale down directly\n      // otherwise pass the equivalent matrix() down directly\n      const tm = tlist.getItem(N - 3).matrix,\n        sm = tlist.getItem(N - 2).matrix,\n        tmn = tlist.getItem(N - 1).matrix;\n\n      const children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        tx = 0;\n        ty = 0;\n        if (child.nodeType === 1) {\n          const childTlist = getTransformList(child);\n\n          // some children might not have a transform (<metadata>, <defs>, etc)\n          if (!childTlist) { continue; }\n\n          const m = transformListToTransform(childTlist).matrix;\n\n          // Convert a matrix to a scale if applicable\n          // if (hasMatrixTransform(childTlist) && childTlist.numberOfItems == 1) {\n          //   if (m.b==0 && m.c==0 && m.e==0 && m.f==0) {\n          //     childTlist.removeItem(0);\n          //     const translateOrigin = svgroot.createSVGTransform(),\n          //       scale = svgroot.createSVGTransform(),\n          //       translateBack = svgroot.createSVGTransform();\n          //     translateOrigin.setTranslate(0, 0);\n          //     scale.setScale(m.a, m.d);\n          //     translateBack.setTranslate(0, 0);\n          //     childTlist.appendItem(translateBack);\n          //     childTlist.appendItem(scale);\n          //     childTlist.appendItem(translateOrigin);\n          //   }\n          // }\n\n          const angle = getRotationAngle(child);\n          oldStartTransform = context_.getStartTransform();\n          const childxforms = [];\n          context_.setStartTransform(child.getAttribute('transform'));\n          if (angle || hasMatrixTransform(childTlist)) {\n            const e2t = svgroot.createSVGTransform();\n            e2t.setMatrix(matrixMultiply(tm, sm, tmn, m));\n            childTlist.clear();\n            childTlist.appendItem(e2t);\n            childxforms.push(e2t);\n          // if not rotated or skewed, push the [T][S][-T] down to the child\n          } else {\n            // update the transform list with translate,scale,translate\n\n            // slide the [T][S][-T] from the front to the back\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n\n            // (only bringing [-T] to the right of [M])\n            // [T][S][-T][M] = [T][S][M][-T2]\n            // [-T2] = [M_inv][-T][M]\n            const t2n = matrixMultiply(m.inverse(), tmn, m);\n            // [T2] is always negative translation of [-T2]\n            const t2 = svgroot.createSVGMatrix();\n            t2.e = -t2n.e;\n            t2.f = -t2n.f;\n\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n            // [S2] = [T2_inv][M_inv][T][S][-T][M][-T2_inv]\n            const s2 = matrixMultiply(t2.inverse(), m.inverse(), tm, sm, tmn, m, t2n.inverse());\n\n            const translateOrigin = svgroot.createSVGTransform(),\n              scale = svgroot.createSVGTransform(),\n              translateBack = svgroot.createSVGTransform();\n            translateOrigin.setTranslate(t2n.e, t2n.f);\n            scale.setScale(s2.a, s2.d);\n            translateBack.setTranslate(t2.e, t2.f);\n            childTlist.appendItem(translateBack);\n            childTlist.appendItem(scale);\n            childTlist.appendItem(translateOrigin);\n            childxforms.push(translateBack);\n            childxforms.push(scale);\n            childxforms.push(translateOrigin);\n            // logMatrix(translateBack.matrix);\n            // logMatrix(scale.matrix);\n          } // not rotated\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          // TODO: If any <use> have this group as a parent and are\n          // referencing this child, then we need to impose a reverse\n          // scale on it so that when it won't get double-translated\n          // const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n          // const href = '#' + child.id;\n          // let u = uses.length;\n          // while (u--) {\n          //   const useElem = uses.item(u);\n          //   if (href == getHref(useElem)) {\n          //     const usexlate = svgroot.createSVGTransform();\n          //     usexlate.setTranslate(-tx,-ty);\n          //     getTransformList(useElem).insertItemBefore(usexlate,0);\n          //     batchCmd.addSubCommand( recalculateDimensions(useElem) );\n          //   }\n          // }\n          context_.setStartTransform(oldStartTransform);\n        } // element\n      } // for each child\n      // Remove these transforms from group\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    } else if (N >= 3 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      const m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n    // next, check if the first transform was a translate\n    // if we had [ T1 ] [ M ] we want to transform this into [ M ] [ T2 ]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ]\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const T_M = transformListToTransform(tlist).matrix;\n      tlist.removeItem(0);\n      const mInv = transformListToTransform(tlist).matrix.inverse();\n      const M2 = matrixMultiply(mInv, T_M);\n\n      tx = M2.e;\n      ty = M2.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n\n        const clipPathsDone = [];\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            // Check if child has clip-path\n            if (child.getAttribute('clip-path')) {\n              // tx, ty\n              const attr = child.getAttribute('clip-path');\n              if (!clipPathsDone.includes(attr)) {\n                updateClipPath(attr, tx, ty);\n                clipPathsDone.push(attr);\n              }\n            }\n\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n\n            const childTlist = getTransformList(child);\n            // some children might not have a transform (<metadata>, <defs>, etc)\n            if (childTlist) {\n              const newxlate = svgroot.createSVGTransform();\n              newxlate.setTranslate(tx, ty);\n              if (childTlist.numberOfItems) {\n                childTlist.insertItemBefore(newxlate, 0);\n              } else {\n                childTlist.appendItem(newxlate);\n              }\n              batchCmd.addSubCommand(recalculateDimensions(child));\n              // If any <use> have this group as a parent and are\n              // referencing this child, then impose a reverse translate on it\n              // so that when it won't get double-translated\n              const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n              const href = '#' + child.id;\n              let u = uses.length;\n              while (u--) {\n                const useElem = uses.item(u);\n                if (href === getHref(useElem)) {\n                  const usexlate = svgroot.createSVGTransform();\n                  usexlate.setTranslate(-tx, -ty);\n                  getTransformList(useElem).insertItemBefore(usexlate, 0);\n                  batchCmd.addSubCommand(recalculateDimensions(useElem));\n                }\n              }\n              context_.setStartTransform(oldStartTransform);\n            }\n          }\n        }\n        context_.setStartTransform(oldStartTransform);\n      }\n    // else, a matrix imposition from a parent group\n    // keep pushing it down to the children\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !gangle) {\n      operation = 1;\n      const m = tlist.getItem(0).matrix,\n        children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        if (child.nodeType === 1) {\n          oldStartTransform = context_.getStartTransform();\n          context_.setStartTransform(child.getAttribute('transform'));\n          const childTlist = getTransformList(child);\n\n          if (!childTlist) { continue; }\n\n          const em = matrixMultiply(m, transformListToTransform(childTlist).matrix);\n          const e2m = svgroot.createSVGTransform();\n          e2m.setMatrix(em);\n          childTlist.clear();\n          childTlist.appendItem(e2m, 0);\n\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          context_.setStartTransform(oldStartTransform);\n\n          // Convert stroke\n          // TODO: Find out if this should actually happen somewhere else\n          const sw = child.getAttribute('stroke-width');\n          if (child.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n            const avg = (Math.abs(em.a) + Math.abs(em.d)) / 2;\n            child.setAttribute('stroke-width', sw * avg);\n          }\n        }\n      }\n      tlist.clear();\n    // else it was just a rotate\n    } else {\n      if (gangle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (gangle) {\n        newcenter = {\n          x: oldcenter.x + firstM.e,\n          y: oldcenter.y + firstM.f\n        };\n\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n    // if it was a resize\n    } else if (operation === 3) {\n      const m = transformListToTransform(tlist).matrix;\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(gangle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(gangle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse(),\n        mInv = m.inverse(),\n        extrat = matrixMultiply(mInv, rnewInv, rold, m);\n\n      tx = extrat.e;\n      ty = extrat.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // now push this transform down to the children\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n            const childTlist = getTransformList(child);\n            const newxlate = svgroot.createSVGTransform();\n            newxlate.setTranslate(tx, ty);\n            if (childTlist.numberOfItems) {\n              childTlist.insertItemBefore(newxlate, 0);\n            } else {\n              childTlist.appendItem(newxlate);\n            }\n\n            batchCmd.addSubCommand(recalculateDimensions(child));\n            context_.setStartTransform(oldStartTransform);\n          }\n        }\n      }\n\n      if (gangle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  // else, it's a non-group\n  } else {\n    // FIXME: box might be null for some elements (<metadata> etc), need to handle this\n    const box = getBBox(selected);\n\n    // Paths (and possbly other shapes) will have no BBox while still in <defs>,\n    // but we still may need to recalculate them (see issue 595).\n    // TODO: Figure out how to get BBox from these elements in case they\n    // have a rotation transform\n\n    if (!box && selected.tagName !== 'path') return null;\n\n    let m; // = svgroot.createSVGMatrix();\n    // temporarily strip off the rotate and save the old center\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n      newcenter = transformPoint(\n        box.x + box.width / 2,\n        box.y + box.height / 2,\n        transformListToTransform(tlist).matrix\n      );\n\n      const a = angle * Math.PI / 180;\n      const s = (Math.abs(a) > (1.0e-10))\n        ? Math.sin(a) / (1 - Math.cos(a))\n        // FIXME: This blows up if the angle is exactly 0!\n        : 2 / a;\n\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n\n    // 2 = translate, 3 = scale, 4 = rotate, 1 = matrix imposition\n    let operation = 0;\n    const N = tlist.numberOfItems;\n\n    // Check if it has a gradient with userSpaceOnUse, in which case\n    // adjust it by recalculating the matrix transform.\n    // TODO: Make this work in Webkit using transformlist.SVGTransformList\n    if (!isWebkit()) {\n      const fill = selected.getAttribute('fill');\n      if (fill && fill.startsWith('url(')) {\n        const paint = getRefElem(fill);\n        let type = 'pattern';\n        if (paint.tagName !== type) type = 'gradient';\n        const attrVal = paint.getAttribute(type + 'Units');\n        if (attrVal === 'userSpaceOnUse') {\n          // Update the userSpaceOnUse element\n          m = transformListToTransform(tlist).matrix;\n          const gtlist = getTransformList(paint);\n          const gmatrix = transformListToTransform(gtlist).matrix;\n          m = matrixMultiply(m, gmatrix);\n          const mStr = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n          paint.setAttribute(type + 'Transform', mStr);\n        }\n      }\n    }\n\n    // first, if it was a scale of a non-skewed element, then the second-last\n    // transform will be the [S]\n    // if we had [M][T][S][T] we want to extract the matrix equivalent of\n    // [T][S][T] and push it down to the element\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      // Removed this so a <use> with a given [T][S][T] would convert to a matrix.\n      // Is that bad?\n      //  && selected.nodeName != 'use'\n      operation = 3; // scale\n      m = transformListToTransform(tlist, N - 3, N - 1).matrix;\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    // if we had [T][S][-T][M], then this was a skewed element being resized\n    // Thus, we simply combine it all into one matrix\n    } else if (N === 4 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n      // reset the matrix so that the element is not re-mapped\n      m = svgroot.createSVGMatrix();\n    // if we had [R][T][S][-T][M], then this was a rotated matrix-element\n    // if we had [T1][M] we want to transform this into [M][T2]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ] and we can push [T2]\n    // down to the element\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const oldxlate = tlist.getItem(0).matrix,\n        meq = transformListToTransform(tlist, 1).matrix,\n        meqInv = meq.inverse();\n      m = matrixMultiply(meqInv, oldxlate, meq);\n      tlist.removeItem(0);\n    // else if this child now has a matrix imposition (from a parent group)\n    // we might be able to simplify\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !angle) {\n      // Remap all point-based elements\n      m = transformListToTransform(tlist).matrix;\n      switch (selected.tagName) {\n      case 'line':\n        changes = $(selected).attr(['x1', 'y1', 'x2', 'y2']);\n        // Fallthrough\n      case 'polyline':\n      case 'polygon':\n        changes.points = selected.getAttribute('points');\n        if (changes.points) {\n          const list = selected.points;\n          const len = list.numberOfItems;\n          changes.points = new Array(len);\n          for (let i = 0; i < len; ++i) {\n            const pt = list.getItem(i);\n            changes.points[i] = {x: pt.x, y: pt.y};\n          }\n        }\n        // Fallthrough\n      case 'path':\n        changes.d = selected.getAttribute('d');\n        operation = 1;\n        tlist.clear();\n        break;\n      default:\n        break;\n      }\n    // if it was a rotation, put the rotate back and return without a command\n    // (this function has zero work to do for a rotate())\n    } else {\n      // operation = 4; // rotation\n      if (angle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate or resize, we need to remap the element and absorb the xform\n    if (operation === 1 || operation === 2 || operation === 3) {\n      remapElement(selected, changes, m);\n    } // if we are remapping\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (angle) {\n        if (!hasMatrixTransform(tlist)) {\n          newcenter = {\n            x: oldcenter.x + m.e,\n            y: oldcenter.y + m.f\n          };\n        }\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      // We have special processing for tspans:  Tspans are not transformable\n      // but they can have x,y coordinates (sigh).  Thus, if this was a translate,\n      // on a text element, also translate any tspan children.\n      if (selected.tagName === 'text') {\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.tagName === 'tspan') {\n            const tspanChanges = {\n              x: $(child).attr('x') || 0,\n              y: $(child).attr('y') || 0\n            };\n            remapElement(child, tspanChanges, m);\n          }\n        }\n      }\n    // [Rold][M][T][S][-T] became [Rold][M]\n    // we want it to be [Rnew][M][Tr] where Tr is the\n    // translation required to re-center it\n    // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]\n    } else if (operation === 3 && angle) {\n      const {matrix} = transformListToTransform(tlist);\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(angle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(angle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse();\n      const mInv = matrix.inverse();\n      const extrat = matrixMultiply(mInv, rnewInv, rold, matrix);\n\n      remapElement(selected, changes, extrat);\n      if (angle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  } // a non-group\n\n  // if the transform list has been emptied, remove it\n  if (tlist.numberOfItems === 0) {\n    selected.removeAttribute('transform');\n  }\n\n  batchCmd.addSubCommand(new ChangeElementCommand(selected, initial));\n\n  return batchCmd;\n};\n","/* globals jQuery */\n/**\n * DOM element selection box tools\n * @module select\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {isTouch, isWebkit} from './browser.js'; // , isOpera\nimport {getRotationAngle, getBBox, getStrokedBBox, isNullish} from './utilities.js';\nimport {transformListToTransform, transformBox, transformPoint} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\nlet svgFactory_;\nlet config_;\nlet selectorManager_; // A Singleton\nconst gripRadius = isTouch() ? 10 : 4;\n\n/**\n* Private class for DOM element selection boxes.\n*/\nexport class Selector {\n  /**\n  * @param {Integer} id - Internally identify the selector\n  * @param {Element} elem - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for initialization (prevents duplicate `getBBox` call).\n  */\n  constructor (id, elem, bbox) {\n    // this is the selector's unique number\n    this.id = id;\n\n    // this holds a reference to the element for which this selector is being used\n    this.selectedElement = elem;\n\n    // this is a flag used internally to track whether the selector is being used or not\n    this.locked = true;\n\n    // this holds a reference to the <g> element that holds all visual elements of the selector\n    this.selectorGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: ('selectorGroup' + this.id)}\n    });\n\n    // this holds a reference to the path rect\n    this.selectorRect = this.selectorGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'path',\n        attr: {\n          id: ('selectedBox' + this.id),\n          fill: 'none',\n          stroke: '#22C',\n          'stroke-width': '1',\n          'stroke-dasharray': '5,5',\n          // need to specify this so that the rect is not selectable\n          style: 'pointer-events:none'\n        }\n      })\n    );\n\n    // this holds a reference to the grip coordinates for this selector\n    this.gripCoords = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.reset(this.selectedElement, bbox);\n  }\n\n  /**\n  * Used to reset the id and element that the selector is attached to.\n  * @param {Element} e - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} bbox - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  reset (e, bbox) {\n    this.locked = true;\n    this.selectedElement = e;\n    this.resize(bbox);\n    this.selectorGroup.setAttribute('display', 'inline');\n  }\n\n  /**\n  * Show the resize grips of this selector.\n  * @param {boolean} show - Indicates whether grips should be shown or not\n  * @returns {undefined}\n  */\n  showGrips (show) {\n    const bShow = show ? 'inline' : 'none';\n    selectorManager_.selectorGripsGroup.setAttribute('display', bShow);\n    const elem = this.selectedElement;\n    this.hasGrips = show;\n    if (elem && show) {\n      this.selectorGroup.append(selectorManager_.selectorGripsGroup);\n      Selector.updateGripCursors(getRotationAngle(elem));\n    }\n  }\n\n  /**\n  * Updates the selector to match the element's size.\n  * @param {module:utilities.BBoxObject} [bbox] - BBox to use for resize (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  resize (bbox) {\n    const selectedBox = this.selectorRect,\n      mgr = selectorManager_,\n      selectedGrips = mgr.selectorGrips,\n      selected = this.selectedElement,\n      sw = selected.getAttribute('stroke-width'),\n      currentZoom = svgFactory_.getCurrentZoom();\n    let offset = 1 / currentZoom;\n    if (selected.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n      offset += (sw / 2);\n    }\n\n    const {tagName} = selected;\n    if (tagName === 'text') {\n      offset += 2 / currentZoom;\n    }\n\n    // loop and transform our bounding box until we reach our first rotation\n    const tlist = getTransformList(selected);\n    const m = transformListToTransform(tlist).matrix;\n\n    // This should probably be handled somewhere else, but for now\n    // it keeps the selection box correctly positioned when zoomed\n    m.e *= currentZoom;\n    m.f *= currentZoom;\n\n    if (!bbox) {\n      bbox = getBBox(selected);\n    }\n    // TODO: getBBox (previous line) already knows to call getStrokedBBox when tagName === 'g'. Remove this?\n    // TODO: getBBox doesn't exclude 'gsvg' and calls getStrokedBBox for any 'g'. Should getBBox be updated?\n    if (tagName === 'g' && !$.data(selected, 'gsvg')) {\n      // The bbox for a group does not include stroke vals, so we\n      // get the bbox based on its children.\n      const strokedBbox = getStrokedBBox([selected.childNodes]);\n      if (strokedBbox) {\n        bbox = strokedBbox;\n      }\n    }\n\n    // apply the transforms\n    const l = bbox.x, t = bbox.y, w = bbox.width, h = bbox.height;\n    // bbox = {x: l, y: t, width: w, height: h}; // Not in use\n\n    // we need to handle temporary transforms too\n    // if skewed, get its transformed box, then find its axis-aligned bbox\n\n    // *\n    offset *= currentZoom;\n\n    const nbox = transformBox(l * currentZoom, t * currentZoom, w * currentZoom, h * currentZoom, m),\n      {aabox} = nbox;\n    let nbax = aabox.x - offset,\n      nbay = aabox.y - offset,\n      nbaw = aabox.width + (offset * 2),\n      nbah = aabox.height + (offset * 2);\n\n    // now if the shape is rotated, un-rotate it\n    const cx = nbax + nbaw / 2,\n      cy = nbay + nbah / 2;\n\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      const rot = svgFactory_.svgRoot().createSVGTransform();\n      rot.setRotate(-angle, cx, cy);\n      const rotm = rot.matrix;\n      nbox.tl = transformPoint(nbox.tl.x, nbox.tl.y, rotm);\n      nbox.tr = transformPoint(nbox.tr.x, nbox.tr.y, rotm);\n      nbox.bl = transformPoint(nbox.bl.x, nbox.bl.y, rotm);\n      nbox.br = transformPoint(nbox.br.x, nbox.br.y, rotm);\n\n      // calculate the axis-aligned bbox\n      const {tl} = nbox;\n      let minx = tl.x,\n        miny = tl.y,\n        maxx = tl.x,\n        maxy = tl.y;\n\n      const {min, max} = Math;\n\n      minx = min(minx, min(nbox.tr.x, min(nbox.bl.x, nbox.br.x))) - offset;\n      miny = min(miny, min(nbox.tr.y, min(nbox.bl.y, nbox.br.y))) - offset;\n      maxx = max(maxx, max(nbox.tr.x, max(nbox.bl.x, nbox.br.x))) + offset;\n      maxy = max(maxy, max(nbox.tr.y, max(nbox.bl.y, nbox.br.y))) + offset;\n\n      nbax = minx;\n      nbay = miny;\n      nbaw = (maxx - minx);\n      nbah = (maxy - miny);\n    }\n\n    const dstr = 'M' + nbax + ',' + nbay +\n      ' L' + (nbax + nbaw) + ',' + nbay +\n      ' ' + (nbax + nbaw) + ',' + (nbay + nbah) +\n      ' ' + nbax + ',' + (nbay + nbah) + 'z';\n    selectedBox.setAttribute('d', dstr);\n\n    const xform = angle ? 'rotate(' + [angle, cx, cy].join(',') + ')' : '';\n    this.selectorGroup.setAttribute('transform', xform);\n\n    // TODO(codedread): Is this needed?\n    //  if (selected === selectedElements[0]) {\n    this.gripCoords = {\n      nw: [nbax, nbay],\n      ne: [nbax + nbaw, nbay],\n      sw: [nbax, nbay + nbah],\n      se: [nbax + nbaw, nbay + nbah],\n      n: [nbax + (nbaw) / 2, nbay],\n      w: [nbax, nbay + (nbah) / 2],\n      e: [nbax + nbaw, nbay + (nbah) / 2],\n      s: [nbax + (nbaw) / 2, nbay + nbah]\n    };\n    Object.entries(this.gripCoords).forEach(([dir, coords]) => {\n      selectedGrips[dir].setAttribute('cx', coords[0]);\n      selectedGrips[dir].setAttribute('cy', coords[1]);\n    });\n\n    // we want to go 20 pixels in the negative transformed y direction, ignoring scale\n    mgr.rotateGripConnector.setAttribute('x1', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y1', nbay);\n    mgr.rotateGripConnector.setAttribute('x2', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y2', nbay - (gripRadius * 5));\n\n    mgr.rotateGrip.setAttribute('cx', nbax + (nbaw) / 2);\n    mgr.rotateGrip.setAttribute('cy', nbay - (gripRadius * 5));\n    // }\n  }\n}\n/**\n* Updates cursors for corner grips on rotation so arrows point the right way.\n* @param {Float} angle - Current rotation angle in degrees\n* @returns {undefined}\n*/\nSelector.updateGripCursors = function (angle) {\n  const dirArr = Object.keys(selectorManager_.selectorGrips);\n  let steps = Math.round(angle / 45);\n  if (steps < 0) { steps += 8; }\n  while (steps > 0) {\n    dirArr.push(dirArr.shift());\n    steps--;\n  }\n  Object.values(selectorManager_.selectorGrips).forEach((gripElement, i) => {\n    gripElement.setAttribute('style', ('cursor:' + dirArr[i] + '-resize'));\n  });\n};\n\n/**\n* Manage all selector objects (selection boxes).\n*/\nexport class SelectorManager {\n  constructor () {\n    // this will hold the <g> element that contains all selector rects/grips\n    this.selectorParentGroup = null;\n\n    // this is a special rect that is used for multi-select\n    this.rubberBandBox = null;\n\n    // this will hold objects of type Selector (see above)\n    this.selectors = [];\n\n    // this holds a map of SVG elements to their Selector object\n    this.selectorMap = {};\n\n    // this holds a reference to the grip elements\n    this.selectorGrips = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.selectorGripsGroup = null;\n    this.rotateGripConnector = null;\n    this.rotateGrip = null;\n\n    this.initGroup();\n  }\n\n  /**\n  * Resets the parent selector group element.\n  * @returns {undefined}\n  */\n  initGroup () {\n    // remove old selector parent group if it existed\n    if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {\n      this.selectorParentGroup.remove();\n    }\n\n    // create parent selector group and add it to svgroot\n    this.selectorParentGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: 'selectorParentGroup'}\n    });\n    this.selectorGripsGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {display: 'none'}\n    });\n    this.selectorParentGroup.append(this.selectorGripsGroup);\n    svgFactory_.svgRoot().append(this.selectorParentGroup);\n\n    this.selectorMap = {};\n    this.selectors = [];\n    this.rubberBandBox = null;\n\n    // add the corner grips\n    Object.keys(this.selectorGrips).forEach((dir) => {\n      const grip = svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: ('selectorGrip_resize_' + dir),\n          fill: '#22C',\n          r: gripRadius,\n          style: ('cursor:' + dir + '-resize'),\n          // This expands the mouse-able area of the grips making them\n          // easier to grab with the mouse.\n          // This works in Opera and WebKit, but does not work in Firefox\n          // see https://bugzilla.mozilla.org/show_bug.cgi?id=500174\n          'stroke-width': 2,\n          'pointer-events': 'all'\n        }\n      });\n\n      $.data(grip, 'dir', dir);\n      $.data(grip, 'type', 'resize');\n      this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);\n    });\n\n    // add rotator elems\n    this.rotateGripConnector = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'line',\n        attr: {\n          id: ('selectorGrip_rotateconnector'),\n          stroke: '#22C',\n          'stroke-width': '1'\n        }\n      })\n    );\n\n    this.rotateGrip = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: 'selectorGrip_rotate',\n          fill: 'lime',\n          r: gripRadius,\n          stroke: '#22C',\n          'stroke-width': 2,\n          style: 'cursor:url(' + config_.imgPath + 'rotate.png) 12 12, auto;'\n        }\n      })\n    );\n    $.data(this.rotateGrip, 'type', 'rotate');\n\n    if ($('#canvasBackground').length) { return; }\n\n    const [width, height] = config_.dimensions;\n    const canvasbg = svgFactory_.createSVGElement({\n      element: 'svg',\n      attr: {\n        id: 'canvasBackground',\n        width,\n        height,\n        x: 0,\n        y: 0,\n        overflow: (isWebkit() ? 'none' : 'visible'), // Chrome 7 has a problem with this when zooming out\n        style: 'pointer-events:none'\n      }\n    });\n\n    const rect = svgFactory_.createSVGElement({\n      element: 'rect',\n      attr: {\n        width: '100%',\n        height: '100%',\n        x: 0,\n        y: 0,\n        'stroke-width': 1,\n        stroke: '#000',\n        fill: '#FFF',\n        style: 'pointer-events:none'\n      }\n    });\n\n    // Both Firefox and WebKit are too slow with this filter region (especially at higher\n    // zoom levels) and Opera has at least one bug\n    // if (!isOpera()) rect.setAttribute('filter', 'url(#canvashadow)');\n    canvasbg.append(rect);\n    svgFactory_.svgRoot().insertBefore(canvasbg, svgFactory_.svgContent());\n    // Ok to replace above with `svgFactory_.svgContent().before(canvasbg);`?\n  }\n\n  /**\n  *\n  * @param {Element} elem - DOM element to get the selector for\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {Selector} The selector based on the given element\n  */\n  requestSelector (elem, bbox) {\n    if (isNullish(elem)) { return null; }\n\n    const N = this.selectors.length;\n    // If we've already acquired one for this element, return it.\n    if (typeof this.selectorMap[elem.id] === 'object') {\n      this.selectorMap[elem.id].locked = true;\n      return this.selectorMap[elem.id];\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && !this.selectors[i].locked) {\n        this.selectors[i].locked = true;\n        this.selectors[i].reset(elem, bbox);\n        this.selectorMap[elem.id] = this.selectors[i];\n        return this.selectors[i];\n      }\n    }\n    // if we reached here, no available selectors were found, we create one\n    this.selectors[N] = new Selector(N, elem, bbox);\n    this.selectorParentGroup.append(this.selectors[N].selectorGroup);\n    this.selectorMap[elem.id] = this.selectors[N];\n    return this.selectors[N];\n  }\n\n  /**\n  * Removes the selector of the given element (hides selection box).\n  *\n  * @param {Element} elem - DOM element to remove the selector for\n  * @returns {undefined}\n  */\n  releaseSelector (elem) {\n    if (isNullish(elem)) { return; }\n    const N = this.selectors.length,\n      sel = this.selectorMap[elem.id];\n    if (!sel.locked) {\n      // TODO(codedread): Ensure this exists in this module.\n      console.log('WARNING! selector was released but was already unlocked'); // eslint-disable-line no-console\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && this.selectors[i] === sel) {\n        delete this.selectorMap[elem.id];\n        sel.locked = false;\n        sel.selectedElement = null;\n        sel.showGrips(false);\n\n        // remove from DOM and store reference in JS but only if it exists in the DOM\n        try {\n          sel.selectorGroup.setAttribute('display', 'none');\n        } catch (e) {}\n\n        break;\n      }\n    }\n  }\n\n  /**\n  * @returns {SVGRectElement} The rubberBandBox DOM element. This is the rectangle drawn by\n  * the user for selecting/zooming\n  */\n  getRubberBandBox () {\n    if (!this.rubberBandBox) {\n      this.rubberBandBox = this.selectorParentGroup.appendChild(\n        svgFactory_.createSVGElement({\n          element: 'rect',\n          attr: {\n            id: 'selectorRubberBand',\n            fill: '#22C',\n            'fill-opacity': 0.15,\n            stroke: '#22C',\n            'stroke-width': 0.5,\n            display: 'none',\n            style: 'pointer-events:none'\n          }\n        })\n      );\n    }\n    return this.rubberBandBox;\n  }\n}\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:select.SVGFactory\n */\n/**\n * @function module:select.SVGFactory#createSVGElement\n * @param {module:utilities.EditorContext#addSVGElementFromJson} jsonMap\n * @returns {SVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgRoot\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#getCurrentZoom\n * @returns {Float}\n */\n\n/**\n * @typedef {GenericArray} module:select.Dimensions\n * @property {Integer} length 2\n * @property {Float} 0 Width\n * @property {Float} 1 Height\n */\n/**\n * @typedef {PlainObject} module:select.Config\n * @property {string} imgPath\n * @property {module:select.Dimensions} dimensions\n */\n\n/**\n * Initializes this module.\n * @function module:select.init\n * @param {module:select.Config} config - An object containing configurable parameters (imgPath)\n * @param {module:select.SVGFactory} svgFactory - An object implementing the SVGFactory interface.\n * @returns {undefined}\n */\nexport const init = function (config, svgFactory) {\n  config_ = config;\n  svgFactory_ = svgFactory;\n  selectorManager_ = new SelectorManager();\n};\n\n/**\n * @function module:select.getSelectorManager\n * @returns {module:select.SelectorManager} The SelectorManager instance.\n */\nexport const getSelectorManager = () => selectorManager_;\n","/* globals jQuery */\n/**\n * Manipulating coordinates\n * @module coords\n * @license MIT\n */\n\nimport './svgpathseg.js';\nimport {\n  snapToGrid, assignAttributes, getBBox, getRefElem, findDefs\n} from './utilities.js';\nimport {\n  transformPoint, transformListToTransform, matrixMultiply, transformBox\n} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\n// this is how we map paths to our preferred relative segment types\nconst pathMap = [\n  0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'\n];\n\n/**\n * @interface module:coords.EditorContext\n */\n/**\n * @function module:coords.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:coords.EditorContext#getDrawing\n * @returns {module:draw.Drawing}\n*/\n/**\n * @function module:coords.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\nlet editorContext_ = null;\n\n/**\n* @function module:coords.init\n* @param {module:coords.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n};\n\n/**\n * Applies coordinate changes to an element based on the given matrix.\n * @function module:coords.remapElement\n * @implements {module:path.EditorContext#remapElement}\n*/\nexport const remapElement = function (selected, changes, m) {\n  const remap = function (x, y) { return transformPoint(x, y, m); },\n    scalew = function (w) { return m.a * w; },\n    scaleh = function (h) { return m.d * h; },\n    doSnapping = editorContext_.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',\n    finishUp = function () {\n      if (doSnapping) {\n        Object.entries(changes).forEach(([o, value]) => {\n          changes[o] = snapToGrid(value);\n        });\n      }\n      assignAttributes(selected, changes, 1000, true);\n    },\n    box = getBBox(selected);\n\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = selected.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      if (m.a < 0 || m.d < 0) {\n        const grad = getRefElem(attrVal);\n        const newgrad = grad.cloneNode(true);\n        if (m.a < 0) {\n          // flip x\n          const x1 = newgrad.getAttribute('x1');\n          const x2 = newgrad.getAttribute('x2');\n          newgrad.setAttribute('x1', -(x1 - 1));\n          newgrad.setAttribute('x2', -(x2 - 1));\n        }\n\n        if (m.d < 0) {\n          // flip y\n          const y1 = newgrad.getAttribute('y1');\n          const y2 = newgrad.getAttribute('y2');\n          newgrad.setAttribute('y1', -(y1 - 1));\n          newgrad.setAttribute('y2', -(y2 - 1));\n        }\n        newgrad.id = editorContext_.getDrawing().getNextId();\n        findDefs().append(newgrad);\n        selected.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n\n      // Not really working :(\n      // if (selected.tagName === 'path') {\n      //   reorientGrads(selected, m);\n      // }\n    }\n  }\n\n  const elName = selected.tagName;\n  if (elName === 'g' || elName === 'text' || elName === 'tspan' || elName === 'use') {\n    // if it was a translate, then just update x,y\n    if (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && (m.e !== 0 || m.f !== 0)) {\n      // [T][M] = [M][T']\n      // therefore [T'] = [M_inv][T][M]\n      const existing = transformListToTransform(selected).matrix,\n        tNew = matrixMultiply(existing.inverse(), m, existing);\n      changes.x = parseFloat(changes.x) + tNew.e;\n      changes.y = parseFloat(changes.y) + tNew.f;\n    } else {\n      // we just absorb all matrices into the element and don't do any remapping\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    }\n  }\n\n  // now we have a set of changes and an applied reduced transform list\n  // we apply the changes directly to the DOM\n  switch (elName) {\n  case 'foreignObject':\n  case 'rect':\n  case 'image': {\n    // Allow images to be inverted (give them matrix when flipped)\n    if (elName === 'image' && (m.a < 0 || m.d < 0)) {\n      // Convert to matrix\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    } else {\n      const pt1 = remap(changes.x, changes.y);\n      changes.width = scalew(changes.width);\n      changes.height = scaleh(changes.height);\n      changes.x = pt1.x + Math.min(0, changes.width);\n      changes.y = pt1.y + Math.min(0, changes.height);\n      changes.width = Math.abs(changes.width);\n      changes.height = Math.abs(changes.height);\n    }\n    finishUp();\n    break;\n  } case 'ellipse': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    changes.rx = scalew(changes.rx);\n    changes.ry = scaleh(changes.ry);\n    changes.rx = Math.abs(changes.rx);\n    changes.ry = Math.abs(changes.ry);\n    finishUp();\n    break;\n  } case 'circle': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    // take the minimum of the new selected box's dimensions for the new circle radius\n    const tbox = transformBox(box.x, box.y, box.width, box.height, m);\n    const w = tbox.tr.x - tbox.tl.x, h = tbox.bl.y - tbox.tl.y;\n    changes.r = Math.min(w / 2, h / 2);\n\n    if (changes.r) { changes.r = Math.abs(changes.r); }\n    finishUp();\n    break;\n  } case 'line': {\n    const pt1 = remap(changes.x1, changes.y1);\n    const pt2 = remap(changes.x2, changes.y2);\n    changes.x1 = pt1.x;\n    changes.y1 = pt1.y;\n    changes.x2 = pt2.x;\n    changes.y2 = pt2.y;\n  } // Fallthrough\n  case 'text':\n  case 'tspan':\n  case 'use': {\n    finishUp();\n    break;\n  } case 'g': {\n    const gsvg = $(selected).data('gsvg');\n    if (gsvg) {\n      assignAttributes(gsvg, changes, 1000, true);\n    }\n    break;\n  } case 'polyline':\n  case 'polygon': {\n    const len = changes.points.length;\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      const {x, y} = remap(pt.x, pt.y);\n      changes.points[i].x = x;\n      changes.points[i].y = y;\n    }\n\n    // const len = changes.points.length;\n    let pstr = '';\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      pstr += pt.x + ',' + pt.y + ' ';\n    }\n    selected.setAttribute('points', pstr);\n    break;\n  } case 'path': {\n    const segList = selected.pathSegList;\n    let len = segList.numberOfItems;\n    changes.d = [];\n    for (let i = 0; i < len; ++i) {\n      const seg = segList.getItem(i);\n      changes.d[i] = {\n        type: seg.pathSegType,\n        x: seg.x,\n        y: seg.y,\n        x1: seg.x1,\n        y1: seg.y1,\n        x2: seg.x2,\n        y2: seg.y2,\n        r1: seg.r1,\n        r2: seg.r2,\n        angle: seg.angle,\n        largeArcFlag: seg.largeArcFlag,\n        sweepFlag: seg.sweepFlag\n      };\n    }\n\n    len = changes.d.length;\n    const firstseg = changes.d[0],\n      currentpt = remap(firstseg.x, firstseg.y);\n    changes.d[0].x = currentpt.x;\n    changes.d[0].y = currentpt.y;\n    for (let i = 1; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      // if absolute or first segment, we want to remap x, y, x1, y1, x2, y2\n      // if relative, we want to scalew, scaleh\n      if (type % 2 === 0) { // absolute\n        const thisx = (seg.x !== undefined) ? seg.x : currentpt.x, // for V commands\n          thisy = (seg.y !== undefined) ? seg.y : currentpt.y; // for H commands\n        const pt = remap(thisx, thisy);\n        const pt1 = remap(seg.x1, seg.y1);\n        const pt2 = remap(seg.x2, seg.y2);\n        seg.x = pt.x;\n        seg.y = pt.y;\n        seg.x1 = pt1.x;\n        seg.y1 = pt1.y;\n        seg.x2 = pt2.x;\n        seg.y2 = pt2.y;\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      } else { // relative\n        seg.x = scalew(seg.x);\n        seg.y = scaleh(seg.y);\n        seg.x1 = scalew(seg.x1);\n        seg.y1 = scaleh(seg.y1);\n        seg.x2 = scalew(seg.x2);\n        seg.y2 = scaleh(seg.y2);\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      }\n    } // for each segment\n\n    let dstr = '';\n    len = changes.d.length;\n    for (let i = 0; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      dstr += pathMap[type];\n      switch (type) {\n      case 13: // relative horizontal line (h)\n      case 12: // absolute horizontal line (H)\n        dstr += seg.x + ' ';\n        break;\n      case 15: // relative vertical line (v)\n      case 14: // absolute vertical line (V)\n        dstr += seg.y + ' ';\n        break;\n      case 3: // relative move (m)\n      case 5: // relative line (l)\n      case 19: // relative smooth quad (t)\n      case 2: // absolute move (M)\n      case 4: // absolute line (L)\n      case 18: // absolute smooth quad (T)\n        dstr += seg.x + ',' + seg.y + ' ';\n        break;\n      case 7: // relative cubic (c)\n      case 6: // absolute cubic (C)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x2 + ',' + seg.y2 + ' ' +\n          seg.x + ',' + seg.y + ' ';\n        break;\n      case 9: // relative quad (q)\n      case 8: // absolute quad (Q)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 11: // relative elliptical arc (a)\n      case 10: // absolute elliptical arc (A)\n        dstr += seg.r1 + ',' + seg.r2 + ' ' + seg.angle + ' ' + Number(seg.largeArcFlag) +\n          ' ' + Number(seg.sweepFlag) + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 17: // relative smooth cubic (s)\n      case 16: // absolute smooth cubic (S)\n        dstr += seg.x2 + ',' + seg.y2 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      }\n    }\n\n    selected.setAttribute('d', dstr);\n    break;\n  }\n  }\n};\n","/* eslint-disable indent */\n/* globals jQuery, jsPDF */\n/**\n * Numerous tools for working with the editor's \"canvas\"\n * @module svgcanvas\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Pavol Rusnak, 2010 Jeff Schiller\n *\n */\n\n/* Dependencies:\n1. Also expects jQuery UI for `svgCanvasToString` and\n`convertToGroup` use of `:data()` selector\n*/\n\n// Todo: Obtain/adapt latest jsPDF to utilize ES Module for `jsPDF`/avoid global\n\nimport './svgpathseg.js';\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport jQueryPluginDBox from './dbox.js';\nimport * as draw from './draw.js'; // eslint-disable-line import/no-duplicates\nimport { // eslint-disable-line no-duplicate-imports\n  identifyLayers, createLayer, cloneLayer, deleteCurrentLayer,\n  setCurrentLayer, renameCurrentLayer, setCurrentLayerPosition,\n  setLayerVisibility, moveSelectedToLayer, mergeLayer, mergeAllLayers,\n  leaveContext, setContext\n} from './draw.js'; // eslint-disable-line import/no-duplicates\nimport * as pathModule from './path.js';\nimport {sanitizeSvg} from './sanitize.js';\nimport {getReverseNS, NS} from './namespaces.js';\nimport {importSetGlobal, importScript} from './external/dynamic-import-polyfill/importModule.js';\nimport {\n  text2xml, assignAttributes, cleanupElement, getElem, getUrlFromAttr,\n  findDefs, getHref, setHref, getRefElem, getRotationAngle, getPathBBox,\n  preventClickDefault, snapToGrid, walkTree, walkTreePost,\n  getBBoxOfElementAsPath, convertToPath, toXml, encode64, decode64,\n  dataURLToObjectURL, createObjectURL,\n  getVisibleElements, dropXMLInteralSubset,\n  init as utilsInit, getBBox as utilsGetBBox, getStrokedBBoxDefaultVisible,\n  isNullish\n} from './utilities.js';\nimport * as hstry from './history.js';\nimport {\n  transformPoint, matrixMultiply, hasMatrixTransform, transformListToTransform,\n  getMatrix, snapToAngle, isIdentity, rectsIntersect, transformBox\n} from './math.js';\nimport {\n  convertToNum, convertAttrs, convertUnit, shortFloat, getTypeMap,\n  init as unitsInit\n} from './units.js';\nimport {\n  isGecko, isChrome, isIE, isWebkit, supportsNonScalingStroke, supportsGoodTextCharPos\n} from './browser.js'; // , supportsEditableText\nimport {\n  getTransformList, resetListMap,\n  SVGTransformList as SVGEditTransformList\n} from './svgtransformlist.js';\nimport {\n  remapElement,\n  init as coordsInit\n} from './coords.js';\nimport {\n  recalculateDimensions,\n  init as recalculateInit\n} from './recalculate.js';\nimport {\n  getSelectorManager,\n  Selector,\n  init as selectInit\n} from './select.js';\n\nlet $ = jQueryPluginSVG(jQuery);\nconst {\n  MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand, BatchCommand, UndoManager, HistoryEventTypes\n} = hstry;\n\nif (!window.console) {\n  window.console = {};\n  window.console.log = function (str) { /* */ };\n  window.console.dir = function (str) { /* */ };\n}\n\nif (window.opera) {\n  window.console.log = function (str) { window.opera.postError(str); };\n  window.console.dir = function (str) { /* */ };\n}\n\n/**\n* The main SvgCanvas class that manages all SVG-related functions.\n* @memberof module:svgcanvas\n*\n* @borrows module:coords.remapElement as #remapElement\n* @borrows module:recalculate.recalculateDimensions as #recalculateDimensions\n*\n* @borrows module:utilities.cleanupElement as #cleanupElement\n* @borrows module:utilities.getStrokedBBoxDefaultVisible as #getStrokedBBox\n* @borrows module:utilities.getVisibleElements as #getVisibleElements\n* @borrows module:utilities.findDefs as #findDefs\n* @borrows module:utilities.getUrlFromAttr as #getUrlFromAttr\n* @borrows module:utilities.getHref as #getHref\n* @borrows module:utilities.setHref as #setHref\n* @borrows module:utilities.getRotationAngle as #getRotationAngle\n* @borrows module:utilities.getBBox as #getBBox\n* @borrows module:utilities.getElem as #getElem\n* @borrows module:utilities.getRefElem as #getRefElem\n* @borrows module:utilities.assignAttributes as #assignAttributes\n*\n* @borrows module:SVGTransformList.getTransformList as #getTransformList\n* @borrows module:math.matrixMultiply as #matrixMultiply\n* @borrows module:math.hasMatrixTransform as #hasMatrixTransform\n* @borrows module:math.transformListToTransform as #transformListToTransform\n* @borrows module:units.convertToNum as #convertToNum\n* @borrows module:sanitize.sanitizeSvg as #sanitizeSvg\n* @borrows module:path.pathActions.linkControlPoints as #linkControlPoints\n*/\nclass SvgCanvas {\n  /**\n  * @param {HTMLElement} container - The container HTML element that should hold the SVG root element\n  * @param {module:SVGEditor.curConfig} config - An object that contains configuration data\n  */\n  constructor (container, config) {\n// Alias Namespace constants\n\n// Default configuration options\nconst curConfig = {\n  show_outside_canvas: true,\n  selectNew: true,\n  dimensions: [640, 480]\n};\n\n// Update config with new one if given\nif (config) {\n  $.extend(curConfig, config);\n}\n\n// Array with width/height of canvas\nconst {dimensions} = curConfig;\n\nconst canvas = this; // eslint-disable-line consistent-this\n\n// \"document\" element associated with the container (same as window.document using default svg-editor.js)\n// NOTE: This is not actually a SVG document, but an HTML document.\nconst svgdoc = container.ownerDocument;\n\n// This is a container for the document being edited, not the document itself.\n/**\n * @name module:svgcanvas~svgroot\n * @type {SVGSVGElement}\n */\nconst svgroot = svgdoc.importNode(\n  text2xml(\n    '<svg id=\"svgroot\" xmlns=\"' + NS.SVG + '\" xlinkns=\"' + NS.XLINK + '\" ' +\n      'width=\"' + dimensions[0] + '\" height=\"' + dimensions[1] + '\" x=\"' + dimensions[0] + '\" y=\"' + dimensions[1] + '\" overflow=\"visible\">' +\n      '<defs>' +\n        '<filter id=\"canvashadow\" filterUnits=\"objectBoundingBox\">' +\n          '<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"4\" result=\"blur\"/>' +\n          '<feOffset in=\"blur\" dx=\"5\" dy=\"5\" result=\"offsetBlur\"/>' +\n          '<feMerge>' +\n            '<feMergeNode in=\"offsetBlur\"/>' +\n            '<feMergeNode in=\"SourceGraphic\"/>' +\n          '</feMerge>' +\n        '</filter>' +\n      '</defs>' +\n    '</svg>'\n  ).documentElement,\n  true\n);\ncontainer.append(svgroot);\n\n/**\n * The actual element that represents the final output SVG element\n * @name module:svgcanvas~svgcontent\n * @type {SVGSVGElement}\n */\nlet svgcontent = svgdoc.createElementNS(NS.SVG, 'svg');\n\n/**\n* This function resets the svgcontent element while keeping it in the DOM.\n* @function module:svgcanvas.SvgCanvas#clearSvgContentElement\n* @returns {undefined}\n*/\nconst clearSvgContentElement = canvas.clearSvgContentElement = function () {\n  $(svgcontent).empty();\n\n  // TODO: Clear out all other attributes first?\n  $(svgcontent).attr({\n    id: 'svgcontent',\n    width: dimensions[0],\n    height: dimensions[1],\n    x: dimensions[0],\n    y: dimensions[1],\n    overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden',\n    xmlns: NS.SVG,\n    'xmlns:se': NS.SE,\n    'xmlns:xlink': NS.XLINK\n  }).appendTo(svgroot);\n\n  // TODO: make this string optional and set by the client\n  const comment = svgdoc.createComment(' Created with SVG-edit - https://github.com/SVG-Edit/svgedit');\n  svgcontent.append(comment);\n};\nclearSvgContentElement();\n\n// Prefix string for element IDs\nlet idprefix = 'svg_';\n\n/**\n* Changes the ID prefix to the given value.\n* @function module:svgcanvas.SvgCanvas#setIdPrefix\n* @param {string} p - String with the new prefix\n* @returns {undefined}\n*/\ncanvas.setIdPrefix = function (p) {\n  idprefix = p;\n};\n\n/**\n* Current draw.Drawing object\n* @type {module:draw.Drawing}\n* @name module:svgcanvas.SvgCanvas#current_drawing_\n*/\ncanvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n/**\n* Returns the current Drawing.\n* @function module:svgcanvas.SvgCanvas#getCurrentDrawing\n* @implements {module:draw.DrawCanvasInit#getCurrentDrawing}\n*/\nconst getCurrentDrawing = canvas.getCurrentDrawing = function () {\n  return canvas.current_drawing_;\n};\n\n/**\n* Float displaying the current zoom level (1 = 100%, .5 = 50%, etc)\n* @type {Float}\n*/\nlet currentZoom = 1;\n\n// pointer to current group (for in-group editing)\nlet currentGroup = null;\n\n// Object containing data for the currently selected styles\nconst allProperties = {\n  shape: {\n    fill: (curConfig.initFill.color === 'none' ? '' : '#') + curConfig.initFill.color,\n    fill_paint: null,\n    fill_opacity: curConfig.initFill.opacity,\n    stroke: '#' + curConfig.initStroke.color,\n    stroke_paint: null,\n    stroke_opacity: curConfig.initStroke.opacity,\n    stroke_width: curConfig.initStroke.width,\n    stroke_dasharray: 'none',\n    stroke_linejoin: 'miter',\n    stroke_linecap: 'butt',\n    opacity: curConfig.initOpacity\n  }\n};\n\nallProperties.text = $.extend(true, {}, allProperties.shape);\n$.extend(allProperties.text, {\n  fill: '#000000',\n  stroke_width: curConfig.text && curConfig.text.stroke_width,\n  font_size: curConfig.text && curConfig.text.font_size,\n  font_family: curConfig.text && curConfig.text.font_family\n});\n\n// Current shape style properties\nconst curShape = allProperties.shape;\n\n// Array with all the currently selected elements\n// default size of 1 until it needs to grow bigger\nlet selectedElements = [];\n\n/**\n* @typedef {PlainObject} module:svgcanvas.SVGAsJSON\n* @property {string} element\n* @property {PlainObject.<string, string>} attr\n* @property {module:svgcanvas.SVGAsJSON[]} children\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @param {Text|Element} data\n* @returns {module:svgcanvas.SVGAsJSON}\n*/\nconst getJsonFromSvgElement = this.getJsonFromSvgElement = function (data) {\n  // Text node\n  if (data.nodeType === 3) return data.nodeValue;\n\n  const retval = {\n    element: data.tagName,\n    // namespace: nsMap[data.namespaceURI],\n    attr: {},\n    children: []\n  };\n\n  // Iterate attributes\n  for (let i = 0, attr; (attr = data.attributes[i]); i++) {\n    retval.attr[attr.name] = attr.value;\n  }\n\n  // Iterate children\n  for (let i = 0, node; (node = data.childNodes[i]); i++) {\n    retval.children[i] = getJsonFromSvgElement(node);\n  }\n\n  return retval;\n};\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @function module:svgcanvas.SvgCanvas#addSVGElementFromJson\n* @implements {module:utilities.EditorContext#addSVGElementFromJson|module:path.EditorContext#addSVGElementFromJson}\n*/\nconst addSVGElementFromJson = this.addSVGElementFromJson = function (data) {\n  if (typeof data === 'string') return svgdoc.createTextNode(data);\n\n  let shape = getElem(data.attr.id);\n  // if shape is a path but we need to create a rect/ellipse, then remove the path\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (shape && data.element !== shape.tagName) {\n    shape.remove();\n    shape = null;\n  }\n  if (!shape) {\n    const ns = data.namespace || NS.SVG;\n    shape = svgdoc.createElementNS(ns, data.element);\n    if (currentLayer) {\n      (currentGroup || currentLayer).append(shape);\n    }\n  }\n  if (data.curStyles) {\n    assignAttributes(shape, {\n      fill: curShape.fill,\n      stroke: curShape.stroke,\n      'stroke-width': curShape.stroke_width,\n      'stroke-dasharray': curShape.stroke_dasharray,\n      'stroke-linejoin': curShape.stroke_linejoin,\n      'stroke-linecap': curShape.stroke_linecap,\n      'stroke-opacity': curShape.stroke_opacity,\n      'fill-opacity': curShape.fill_opacity,\n      opacity: curShape.opacity / 2,\n      style: 'pointer-events:inherit'\n    }, 100);\n  }\n  assignAttributes(shape, data.attr, 100);\n  cleanupElement(shape);\n\n  // Children\n  if (data.children) {\n    data.children.forEach((child) => {\n      shape.append(addSVGElementFromJson(child));\n    });\n  }\n\n  return shape;\n};\n\ncanvas.getTransformList = getTransformList;\n\ncanvas.matrixMultiply = matrixMultiply;\ncanvas.hasMatrixTransform = hasMatrixTransform;\ncanvas.transformListToTransform = transformListToTransform;\n\n/**\n* @implements {module:utilities.EditorContext#getBaseUnit}\n*/\nconst getBaseUnit = () => { return curConfig.baseUnit; };\n\n/**\n* initialize from units.js.\n* Send in an object implementing the ElementContainer interface (see units.js)\n*/\nunitsInit(\n  /**\n  * @implements {module:units.ElementContainer}\n  */\n  {\n    getBaseUnit,\n    getElement: getElem,\n    getHeight () { return svgcontent.getAttribute('height') / currentZoom; },\n    getWidth () { return svgcontent.getAttribute('width') / currentZoom; },\n    getRoundDigits () { return saveOptions.round_digits; }\n  }\n);\n\ncanvas.convertToNum = convertToNum;\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @implements {module:draw.DrawCanvasInit#getSVGContent|module:utilities.EditorContext#getSVGContent}\n*/\nconst getSVGContent = () => { return svgcontent; };\n\n/**\n* Should really be an intersection with all needing to apply rather than a union.\n* @function module:svgcanvas.SvgCanvas#getSelectedElements\n* @implements {module:utilities.EditorContext#getSelectedElements|module:draw.DrawCanvasInit#getSelectedElements|module:path.EditorContext#getSelectedElements}\n*/\nconst getSelectedElements = this.getSelectedElems = function () {\n  return selectedElements;\n};\n\nconst {pathActions} = pathModule;\n\n/**\n* This should actually be an intersection as all interfaces should be met.\n* @implements {module:utilities.EditorContext#getSVGRoot|module:recalculate.EditorContext#getSVGRoot|module:coords.EditorContext#getSVGRoot|module:path.EditorContext#getSVGRoot}\n*/\nconst getSVGRoot = () => svgroot;\n\nutilsInit(\n  /**\n  * @implements {module:utilities.EditorContext}\n  */\n  {\n    pathActions, // Ok since not modifying\n    getSVGContent,\n    addSVGElementFromJson,\n    getSelectedElements,\n    getDOMDocument () { return svgdoc; },\n    getDOMContainer () { return container; },\n    getSVGRoot,\n    // TODO: replace this mostly with a way to get the current drawing.\n    getBaseUnit,\n    getSnappingStep () { return curConfig.snappingStep; }\n  }\n);\n\ncanvas.findDefs = findDefs;\ncanvas.getUrlFromAttr = getUrlFromAttr;\ncanvas.getHref = getHref;\ncanvas.setHref = setHref;\n/* const getBBox = */ canvas.getBBox = utilsGetBBox;\ncanvas.getRotationAngle = getRotationAngle;\ncanvas.getElem = getElem;\ncanvas.getRefElem = getRefElem;\ncanvas.assignAttributes = assignAttributes;\n\nthis.cleanupElement = cleanupElement;\n\n/**\n* This should actually be an intersection not a union as all should apply.\n* @implements {module:coords.EditorContext|module:path.EditorContext}\n*/\nconst getGridSnapping = () => { return curConfig.gridSnapping; };\n\ncoordsInit(\n  /**\n  * @implements {module:coords.EditorContext}\n  */\n  {\n    getDrawing () { return getCurrentDrawing(); },\n    getSVGRoot,\n    getGridSnapping\n  }\n);\nthis.remapElement = remapElement;\n\nrecalculateInit(\n  /**\n  * @implements {module:recalculate.EditorContext}\n  */\n  {\n    getSVGRoot,\n    getStartTransform () { return startTransform; },\n    setStartTransform (transform) { startTransform = transform; }\n  }\n);\nthis.recalculateDimensions = recalculateDimensions;\n\n// import from sanitize.js\nconst nsMap = getReverseNS();\ncanvas.sanitizeSvg = sanitizeSvg;\n\n/**\n* @name undoMgr\n* @memberof module:svgcanvas.SvgCanvas#\n* @type {module:history.HistoryEventHandler}\n*/\nconst undoMgr = canvas.undoMgr = new UndoManager({\n  /**\n   * @param {string} eventType One of the HistoryEvent types\n   * @param {module:history.HistoryCommand} cmd Fulfills the HistoryCommand interface\n   * @fires module:svgcanvas.SvgCanvas#event:changed\n   * @returns {undefined}\n   */\n  handleHistoryEvent (eventType, cmd) {\n    const EventTypes = HistoryEventTypes;\n    // TODO: handle setBlurOffsets.\n    if (eventType === EventTypes.BEFORE_UNAPPLY || eventType === EventTypes.BEFORE_APPLY) {\n      canvas.clearSelection();\n    } else if (eventType === EventTypes.AFTER_APPLY || eventType === EventTypes.AFTER_UNAPPLY) {\n      const elems = cmd.elements();\n      canvas.pathActions.clear();\n      call('changed', elems);\n      const cmdType = cmd.type();\n      const isApply = (eventType === EventTypes.AFTER_APPLY);\n      if (cmdType === MoveElementCommand.type()) {\n        const parent = isApply ? cmd.newParent : cmd.oldParent;\n        if (parent === svgcontent) {\n          draw.identifyLayers();\n        }\n      } else if (cmdType === InsertElementCommand.type() ||\n          cmdType === RemoveElementCommand.type()) {\n        if (cmd.parent === svgcontent) {\n          draw.identifyLayers();\n        }\n        if (cmdType === InsertElementCommand.type()) {\n          if (isApply) { restoreRefElems(cmd.elem); }\n        } else if (!isApply) {\n          restoreRefElems(cmd.elem);\n        }\n        if (cmd.elem.tagName === 'use') {\n          setUseData(cmd.elem);\n        }\n      } else if (cmdType === ChangeElementCommand.type()) {\n        // if we are changing layer names, re-identify all layers\n        if (cmd.elem.tagName === 'title' &&\n          cmd.elem.parentNode.parentNode === svgcontent\n        ) {\n          draw.identifyLayers();\n        }\n        const values = isApply ? cmd.newValues : cmd.oldValues;\n        // If stdDeviation was changed, update the blur.\n        if (values.stdDeviation) {\n          canvas.setBlurOffsets(cmd.elem.parentNode, values.stdDeviation);\n        }\n        // This is resolved in later versions of webkit, perhaps we should\n        // have a featured detection for correct 'use' behavior?\n        // ——————————\n        // Remove & Re-add hack for Webkit (issue 775)\n        // if (cmd.elem.tagName === 'use' && isWebkit()) {\n        //  const {elem} = cmd;\n        //  if (!elem.getAttribute('x') && !elem.getAttribute('y')) {\n        //    const parent = elem.parentNode;\n        //    const sib = elem.nextSibling;\n        //    elem.remove();\n        //    parent.insertBefore(elem, sib);\n        //    // Ok to replace above with this? `sib.before(elem);`\n        //  }\n        // }\n      }\n    }\n  }\n});\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas~addCommandToHistory\n* @implements {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory}\n*/\nconst addCommandToHistory = function (cmd) {\n  canvas.undoMgr.addCommandToHistory(cmd);\n};\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#getZoom\n* @implements {module:path.EditorContext#getCurrentZoom|module:select.SVGFactory#getCurrentZoom}\n*/\nconst getCurrentZoom = this.getZoom = function () { return currentZoom; };\n\n/**\n* This method rounds the incoming value to the nearest value based on the `currentZoom`\n* @function module:svgcanvas.SvgCanvas#round\n* @implements {module:path.EditorContext#round}\n*/\nconst round = this.round = function (val) {\n  return parseInt(val * currentZoom) / currentZoom;\n};\n\nselectInit(\n  curConfig,\n  /**\n  * Export to select.js\n  * @implements {module:select.SVGFactory}\n  */\n  {\n    createSVGElement (jsonMap) { return canvas.addSVGElementFromJson(jsonMap); },\n    svgRoot () { return svgroot; },\n    svgContent () { return svgcontent; },\n    getCurrentZoom\n  }\n);\n/**\n* This object manages selectors for us\n* @name module:svgcanvas.SvgCanvas#selectorManager\n* @type {module:select.SelectorManager}\n*/\nconst selectorManager = this.selectorManager = getSelectorManager();\n\n/**\n* @function module:svgcanvas.SvgCanvas#getNextId\n* @implements {module:path.EditorContext#getNextId}\n*/\nconst getNextId = canvas.getNextId = function () {\n  return getCurrentDrawing().getNextId();\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getId\n* @implements {module:path.EditorContext#getId}\n*/\nconst getId = canvas.getId = function () {\n  return getCurrentDrawing().getId();\n};\n\n/**\n* The \"implements\" should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#call\n* @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}\n* @param {\"selected\"|\"changed\"|\"contextset\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String with the event name\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.\n* @returns {module:svgcanvas.EventHandlerReturn|undefined}\n*/\nconst call = function (ev, arg) {\n  if (events[ev]) {\n    return events[ev](window, arg);\n  }\n  return undefined;\n};\n\n/**\n* Clears the selection. The 'selected' handler is then optionally called.\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#clearSelection\n* @implements {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst clearSelection = this.clearSelection = function (noCall) {\n  selectedElements.forEach((elem) => {\n    if (isNullish(elem)) {\n      return;\n    }\n    selectorManager.releaseSelector(elem);\n  });\n  selectedElements = [];\n\n  if (!noCall) { call('selected', selectedElements); }\n};\n\n/**\n* Adds a list of elements to the selection. The 'selected' handler is then called.\n* @function module:svgcanvas.SvgCanvas#addToSelection\n* @implements {module:path.EditorContext#addToSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst addToSelection = this.addToSelection = function (elemsToAdd, showGrips) {\n  if (!elemsToAdd.length) { return; }\n  // find the first null in our selectedElements array\n\n  let j = 0;\n  while (j < selectedElements.length) {\n    if (isNullish(selectedElements[j])) {\n      break;\n    }\n    ++j;\n  }\n\n  // now add each element consecutively\n  let i = elemsToAdd.length;\n  while (i--) {\n    let elem = elemsToAdd[i];\n    if (!elem) { continue; }\n    const bbox = utilsGetBBox(elem);\n    if (!bbox) { continue; }\n\n    if (elem.tagName === 'a' && elem.childNodes.length === 1) {\n      // Make \"a\" element's child be the selected element\n      elem = elem.firstChild;\n    }\n\n    // if it's not already there, add it\n    if (!selectedElements.includes(elem)) {\n      selectedElements[j] = elem;\n\n      // only the first selectedBBoxes element is ever used in the codebase these days\n      // if (j === 0) selectedBBoxes[0] = utilsGetBBox(elem);\n      j++;\n      const sel = selectorManager.requestSelector(elem, bbox);\n\n      if (selectedElements.length > 1) {\n        sel.showGrips(false);\n      }\n    }\n  }\n  call('selected', selectedElements);\n\n  if (showGrips || selectedElements.length === 1) {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(true);\n  } else {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(false);\n  }\n\n  // make sure the elements are in the correct order\n  // See: https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-compareDocumentPosition\n\n  selectedElements.sort(function (a, b) {\n    if (a && b && a.compareDocumentPosition) {\n      return 3 - (b.compareDocumentPosition(a) & 6); // eslint-disable-line no-bitwise\n    }\n    if (isNullish(a)) {\n      return 1;\n    }\n    return 0;\n  });\n\n  // Make sure first elements are not null\n  while (isNullish(selectedElements[0])) {\n    selectedElements.shift(0);\n  }\n};\n\n/**\n* @implements {module:path.EditorContext#getOpacity}\n*/\nconst getOpacity = function () {\n  return curShape.opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMouseTarget\n* @implements {module:path.EditorContext#getMouseTarget}\n*/\nconst getMouseTarget = this.getMouseTarget = function (evt) {\n  if (isNullish(evt)) {\n    return null;\n  }\n  let mouseTarget = evt.target;\n\n  // if it was a <use>, Opera and WebKit return the SVGElementInstance\n  if (mouseTarget.correspondingUseElement) { mouseTarget = mouseTarget.correspondingUseElement; }\n\n  // for foreign content, go up until we find the foreignObject\n  // WebKit browsers set the mouse target to the svgcanvas div\n  if ([NS.MATH, NS.HTML].includes(mouseTarget.namespaceURI) &&\n    mouseTarget.id !== 'svgcanvas'\n  ) {\n    while (mouseTarget.nodeName !== 'foreignObject') {\n      mouseTarget = mouseTarget.parentNode;\n      if (!mouseTarget) { return svgroot; }\n    }\n  }\n\n  // Get the desired mouseTarget with jQuery selector-fu\n  // If it's root-like, select the root\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if ([svgroot, container, svgcontent, currentLayer].includes(mouseTarget)) {\n    return svgroot;\n  }\n\n  const $target = $(mouseTarget);\n\n  // If it's a selection grip, return the grip parent\n  if ($target.closest('#selectorParentGroup').length) {\n    // While we could instead have just returned mouseTarget,\n    // this makes it easier to indentify as being a selector grip\n    return selectorManager.selectorParentGroup;\n  }\n\n  while (mouseTarget.parentNode !== (currentGroup || currentLayer)) {\n    mouseTarget = mouseTarget.parentNode;\n  }\n\n  //\n  // // go up until we hit a child of a layer\n  // while (mouseTarget.parentNode.parentNode.tagName == 'g') {\n  //   mouseTarget = mouseTarget.parentNode;\n  // }\n  // Webkit bubbles the mouse event all the way up to the div, so we\n  // set the mouseTarget to the svgroot like the other browsers\n  // if (mouseTarget.nodeName.toLowerCase() == 'div') {\n  //   mouseTarget = svgroot;\n  // }\n\n  return mouseTarget;\n};\n\n/**\n* @namespace {module:path.pathActions} pathActions\n* @memberof module:svgcanvas.SvgCanvas#\n* @see module:path.pathActions\n*/\ncanvas.pathActions = pathActions;\n/**\n* @implements {module:path.EditorContext#resetD}\n*/\nfunction resetD (p) {\n  p.setAttribute('d', pathActions.convertPath(p));\n}\npathModule.init(\n  /**\n  * @implements {module:path.EditorContext}\n  */\n  {\n    selectorManager, // Ok since not changing\n    canvas, // Ok since not changing\n    call,\n    resetD,\n    round,\n    clearSelection,\n    addToSelection,\n    addCommandToHistory,\n    remapElement,\n    addSVGElementFromJson,\n    getGridSnapping,\n    getOpacity,\n    getSelectedElements,\n    getContainer () {\n      return container;\n    },\n    setStarted (s) {\n      started = s;\n    },\n    getRubberBox () {\n      return rubberBox;\n    },\n    setRubberBox (rb) {\n      rubberBox = rb;\n      return rubberBox;\n    },\n    /**\n     * @param {PlainObject} ptsInfo\n     * @param {boolean} ptsInfo.closedSubpath\n     * @param {SVGCircleElement[]} ptsInfo.grips\n     * @fires module:svgcanvas.SvgCanvas#event:pointsAdded\n     * @fires module:svgcanvas.SvgCanvas#event:selected\n     * @returns {undefined}\n     */\n    addPtsToSelection ({closedSubpath, grips}) {\n      // TODO: Correct this:\n      pathActions.canDeleteNodes = true;\n      pathActions.closed_subpath = closedSubpath;\n      call('pointsAdded', {closedSubpath, grips});\n      call('selected', grips);\n    },\n    /**\n     * @param {PlainObject} changes\n     * @param {ChangeElementCommand} changes.cmd\n     * @param {SVGPathElement} changes.elem\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    endChanges ({cmd, elem}) {\n      addCommandToHistory(cmd);\n      call('changed', [elem]);\n    },\n    getCurrentZoom,\n    getId,\n    getNextId,\n    getMouseTarget,\n    getCurrentMode () {\n      return currentMode;\n    },\n    setCurrentMode (cm) {\n      currentMode = cm;\n      return currentMode;\n    },\n    getDrawnPath () {\n      return drawnPath;\n    },\n    setDrawnPath (dp) {\n      drawnPath = dp;\n      return drawnPath;\n    },\n    getSVGRoot\n  }\n);\n\n// Interface strings, usually for title elements\nconst uiStrings = {};\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst refAttrs = ['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'];\n\nconst elData = $.data;\n\n// Animation element to change the opacity of any newly created element\nconst opacAni = document.createElementNS(NS.SVG, 'animate');\n$(opacAni).attr({\n  attributeName: 'opacity',\n  begin: 'indefinite',\n  dur: 1,\n  fill: 'freeze'\n}).appendTo(svgroot);\n\nconst restoreRefElems = function (elem) {\n  // Look for missing reference elements, restore any found\n  const attrs = $(elem).attr(refAttrs);\n  Object.values(attrs).forEach((val) => {\n    if (val && val.startsWith('url(')) {\n      const id = getUrlFromAttr(val).substr(1);\n      const ref = getElem(id);\n      if (!ref) {\n        findDefs().append(removedElements[id]);\n        delete removedElements[id];\n      }\n    }\n  });\n\n  const childs = elem.getElementsByTagName('*');\n\n  if (childs.length) {\n    for (let i = 0, l = childs.length; i < l; i++) {\n      restoreRefElems(childs[i]);\n    }\n  }\n};\n\n// (function () {\n// TODO For Issue 208: this is a start on a thumbnail\n//  const svgthumb = svgdoc.createElementNS(NS.SVG, 'use');\n//  svgthumb.setAttribute('width', '100');\n//  svgthumb.setAttribute('height', '100');\n//  setHref(svgthumb, '#svgcontent');\n//  svgroot.append(svgthumb);\n// }());\n\n/**\n * @typedef {PlainObject} module:svgcanvas.SaveOptions\n * @property {boolean} apply\n * @property {\"embed\"} [image]\n * @property {Integer} round_digits\n */\n\n// Object to contain image data for raster images that were found encodable\nconst encodableImages = {},\n\n  // Object with save options\n  /**\n   * @type {module:svgcanvas.SaveOptions}\n   */\n  saveOptions = {round_digits: 5},\n\n  // Object with IDs for imported files, to see if one was already added\n  importIds = {},\n\n  // Current text style properties\n  curText = allProperties.text,\n\n  // Object to contain all included extensions\n  extensions = {},\n\n  // Map of deleted reference elements\n  removedElements = {};\n\nlet\n  // String with image URL of last loadable image\n  lastGoodImgUrl = curConfig.imgPath + 'logo.png',\n\n  // Boolean indicating whether or not a draw action has been started\n  started = false,\n\n  // String with an element's initial transform attribute value\n  startTransform = null,\n\n  // String indicating the current editor mode\n  currentMode = 'select',\n\n  // String with the current direction in which an element is being resized\n  currentResizeMode = 'none',\n\n  // Current general properties\n  curProperties = curShape,\n\n  // Array with selected elements' Bounding box object\n  // selectedBBoxes = new Array(1),\n\n  // The DOM element that was just selected\n  justSelected = null,\n\n  // DOM element for selection rectangle drawn by the user\n  rubberBox = null,\n\n  // Array of current BBoxes, used in getIntersectionList().\n  curBBoxes = [],\n\n  // Canvas point for the most recent right click\n  lastClickPoint = null;\n\nthis.runExtension = function (name, action, vars) {\n  return this.runExtensions(action, vars, false, (n) => n === name);\n};\n/**\n* @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus\n* @tutorial ExtensionDocs\n*/\n/**\n* @callback module:svgcanvas.ExtensionVarBuilder\n* @param {string} name The name of the extension\n* @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}\n*/\n/**\n* @callback module:svgcanvas.ExtensionNameFilter\n* @param {string} name\n* @returns {boolean}\n*/\n/**\n* @todo Consider: Should this return an array by default, so extension results aren't overwritten?\n* @todo Would be easier to document if passing in object with key of action and vars as value; could then define an interface which tied both together\n* @function module:svgcanvas.SvgCanvas#runExtensions\n* @param {\"mouseDown\"|\"mouseMove\"|\"mouseUp\"|\"zoomChanged\"|\"IDsUpdated\"|\"canvasUpdated\"|\"toolButtonStateUpdate\"|\"selectedChanged\"|\"elementTransition\"|\"elementChanged\"|\"langReady\"|\"langChanged\"|\"addLangData\"|\"onNewDocument\"|\"workareaResized\"} action\n* @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]\n* @param {boolean} [returnArray]\n* @param {module:svgcanvas.ExtensionNameFilter} nameFilter\n* @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.\n*/\nconst runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {\n  let result = returnArray ? [] : false;\n  $.each(extensions, function (name, ext) {\n    if (nameFilter && !nameFilter(name)) {\n      return;\n    }\n    if (ext && action in ext) {\n      if (typeof vars === 'function') {\n        vars = vars(name); // ext, action\n      }\n      if (returnArray) {\n        result.push(ext[action](vars));\n      } else {\n        result = ext[action](vars);\n      }\n    }\n  });\n  return result;\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseDownStatus\n* @property {boolean} started Indicates that creating/editing has started\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseUpStatus\n* @property {boolean} keep Indicates if the current element should be kept\n* @property {boolean} started Indicates if editing should still be considered as \"started\"\n* @property {Element} element The element being affected\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionIDsUpdatedStatus\n* @property {string[]} remove Contains string IDs (used by `ext-connector.js`)\n*/\n\n/**\n * @interface module:svgcanvas.ExtensionInitResponse\n * @property {module:SVGEditor.ContextTool[]|PlainObject.<string, module:SVGEditor.ContextTool>} [context_tools]\n * @property {module:SVGEditor.Button[]|PlainObject.<Integer, module:SVGEditor.Button>} [buttons]\n * @property {string} [svgicons] The location of a local SVG or SVGz file\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseDown\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown} arg\n * @returns {undefined|module:svgcanvas.ExtensionMouseDownStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseMove\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseMove} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseUp\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseUp} arg\n * @returns {module:svgcanvas.ExtensionMouseUpStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#zoomChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#IDsUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} arg\n * @returns {module:svgcanvas.ExtensionIDsUpdatedStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#canvasUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#toolButtonStateUpdate\n * @param {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#selectedChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementTransition\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementTransition} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langReady\n * @param {module:svgcanvas.SvgCanvas#event:ext-langReady} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-langChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#addLangData\n * @param {module:svgcanvas.SvgCanvas#event:ext-addLangData} arg\n * @returns {Promise} Resolves to {@link module:locale.ExtensionLocaleData}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#onNewDocument\n * @param {module:svgcanvas.SvgCanvas#event:ext-onNewDocument} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#workareaResized\n * @param {module:svgcanvas.SvgCanvas#event:ext-workareaResized} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#callback\n * @this module:SVGEditor\n * @param {module:svgcanvas.SvgCanvas#event:ext-callback} arg\n * @returns {undefined}\n*/\n\n/**\n* @callback module:svgcanvas.ExtensionInitCallback\n* @this module:SVGEditor\n* @param {module:svgcanvas.ExtensionArgumentObject} arg\n* @returns {Promise} Resolves to [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse} or `undefined`\n*/\n/**\n* Add an extension to the editor.\n* @function module:svgcanvas.SvgCanvas#addExtension\n* @param {string} name - String with the ID of the extension. Used internally; no need for i18n.\n* @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data\n* @param {module:SVGEditor~ImportLocale} importLocale\n* @fires module:svgcanvas.SvgCanvas#event:extension_added\n* @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`\n*   if extension of supplied name already exists\n* @returns {Promise} Resolves to `undefined`\n*/\nthis.addExtension = async function (name, extInitFunc, importLocale) {\n  if (typeof extInitFunc !== 'function') {\n    throw new TypeError('Function argument expected for `svgcanvas.addExtension`');\n  }\n  if (name in extensions) {\n    throw new Error('Cannot add extension \"' + name + '\", an extension by that name already exists.');\n  }\n  // Provide private vars/funcs here. Is there a better way to do this?\n  /**\n   * @typedef {module:svgcanvas.PrivateMethods} module:svgcanvas.ExtensionArgumentObject\n   * @property {SVGSVGElement} svgroot See {@link module:svgcanvas~svgroot}\n   * @property {SVGSVGElement} svgcontent See {@link module:svgcanvas~svgcontent}\n   * @property {!(string|Integer)} nonce See {@link module:draw.Drawing#getNonce}\n   * @property {module:select.SelectorManager} selectorManager\n   * @property {module:SVGEditor~ImportLocale} importLocale\n   */\n  /**\n   * @type {module:svgcanvas.ExtensionArgumentObject}\n   * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties\n   */\n  const argObj = $.extend(canvas.getPrivateMethods(), {\n    $,\n    importLocale,\n    svgroot,\n    svgcontent,\n    nonce: getCurrentDrawing().getNonce(),\n    selectorManager\n  });\n  const extObj = await extInitFunc(argObj);\n  if (extObj) {\n    extObj.name = name;\n  }\n\n  extensions[name] = extObj;\n  return call('extension_added', extObj);\n};\n\n/**\n* This method sends back an array or a NodeList full of elements that\n* intersect the multi-select rubber-band-box on the currentLayer only.\n*\n* We brute-force `getIntersectionList` for browsers that do not support it (Firefox).\n*\n* Reference:\n* Firefox does not implement `getIntersectionList()`, see {@link https://bugzilla.mozilla.org/show_bug.cgi?id=501421}.\n* @function module:svgcanvas.SvgCanvas#getIntersectionList\n* @param {SVGRect} rect\n* @returns {Element[]|NodeList} Bbox elements\n*/\nconst getIntersectionList = this.getIntersectionList = function (rect) {\n  if (isNullish(rubberBox)) { return null; }\n\n  const parent = currentGroup || getCurrentDrawing().getCurrentLayer();\n\n  let rubberBBox;\n  if (!rect) {\n    rubberBBox = rubberBox.getBBox();\n    const bb = svgcontent.createSVGRect();\n\n    ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach((o) => {\n      bb[o] = rubberBBox[o] / currentZoom;\n    });\n    rubberBBox = bb;\n  } else {\n    rubberBBox = svgcontent.createSVGRect();\n    rubberBBox.x = rect.x;\n    rubberBBox.y = rect.y;\n    rubberBBox.width = rect.width;\n    rubberBBox.height = rect.height;\n  }\n\n  let resultList = null;\n  if (!isIE) {\n    if (typeof svgroot.getIntersectionList === 'function') {\n      // Offset the bbox of the rubber box by the offset of the svgcontent element.\n      rubberBBox.x += parseInt(svgcontent.getAttribute('x'));\n      rubberBBox.y += parseInt(svgcontent.getAttribute('y'));\n\n      resultList = svgroot.getIntersectionList(rubberBBox, parent);\n    }\n  }\n\n  if (isNullish(resultList) || typeof resultList.item !== 'function') {\n    resultList = [];\n\n    if (!curBBoxes.length) {\n      // Cache all bboxes\n      curBBoxes = getVisibleElementsAndBBoxes(parent);\n    }\n    let i = curBBoxes.length;\n    while (i--) {\n      if (!rubberBBox.width) { continue; }\n      if (rectsIntersect(rubberBBox, curBBoxes[i].bbox)) {\n        resultList.push(curBBoxes[i].elem);\n      }\n    }\n  }\n\n  // addToSelection expects an array, but it's ok to pass a NodeList\n  // because using square-bracket notation is allowed:\n  // https://www.w3.org/TR/DOM-Level-2-Core/ecma-script-binding.html\n  return resultList;\n};\n\nthis.getStrokedBBox = getStrokedBBoxDefaultVisible;\n\nthis.getVisibleElements = getVisibleElements;\n\n/**\n* @typedef {PlainObject} ElementAndBBox\n* @property {Element} elem - The element\n* @property {module:utilities.BBoxObject} bbox - The element's BBox as retrieved from `getStrokedBBoxDefaultVisible`\n*/\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:svgcanvas.SvgCanvas#getVisibleElementsAndBBoxes\n* @param {Element} parent - The parent DOM element to search within\n* @returns {ElementAndBBox[]} An array with objects that include:\n*/\nconst getVisibleElementsAndBBoxes = this.getVisibleElementsAndBBoxes = function (parent) {\n  if (!parent) {\n    parent = $(svgcontent).children(); // Prevent layers from being included\n  }\n  const contentElems = [];\n  $(parent).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push({elem, bbox: getStrokedBBoxDefaultVisible([elem])});\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Wrap an SVG element into a group element, mark the group as 'gsvg'.\n* @function module:svgcanvas.SvgCanvas#groupSvgElem\n* @param {Element} elem - SVG element to wrap\n* @returns {undefined}\n*/\nconst groupSvgElem = this.groupSvgElem = function (elem) {\n  const g = document.createElementNS(NS.SVG, 'g');\n  elem.replaceWith(g);\n  $(g).append(elem).data('gsvg', elem)[0].id = getNextId();\n};\n\n// Set scope for these functions\n\n// Object to contain editor event names and callback functions\nconst events = {};\n\ncanvas.call = call;\n/**\n * Array of what was changed (elements, layers)\n * @event module:svgcanvas.SvgCanvas#event:changed\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:selected\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:transition\n * @type {Element[]}\n */\n/**\n * The Element is always `SVGGElement`?\n * If not `null`, will be the set current group element\n * @event module:svgcanvas.SvgCanvas#event:contextset\n * @type {null|Element}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:pointsAdded\n * @type {PlainObject}\n * @property {boolean} closedSubpath\n * @property {SVGCircleElement[]} grips Grips elements\n */\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomed\n * @type {PlainObject}\n * @property {Float} x\n * @property {Float} y\n * @property {Float} width\n * @property {Float} height\n * @property {0.5|2} factor\n * @see module:SVGEditor.BBoxObjectWithFactor\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:updateCanvas\n * @type {PlainObject}\n * @property {false} center\n * @property {module:math.XYObject} newCtr\n */\n/**\n * @typedef {PlainObject} module:svgcanvas.ExtensionInitResponsePlusName\n * @implements {module:svgcanvas.ExtensionInitResponse}\n * @property {string} name The extension's resolved ID (whether explicit or based on file name)\n */\n/**\n * Generalized extension object response of\n * [`init()`]{@link module:svgcanvas.ExtensionInitCallback}\n * along with the name of the extension.\n * @event module:svgcanvas.SvgCanvas#event:extension_added\n * @type {module:svgcanvas.ExtensionInitResponsePlusName|undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:extensions_added\n * @type {undefined}\n*/\n/**\n * @typedef {PlainObject} module:svgcanvas.Message\n * @property {Any} data The data\n * @property {string} origin The origin\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:message\n * @type {module:svgcanvas.Message}\n */\n/**\n * SVG canvas converted to string\n * @event module:svgcanvas.SvgCanvas#event:saved\n * @type {string}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:setnonce\n * @type {!(string|Integer)}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:unsetnonce\n * @type {undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomDone\n * @type {undefined}\n*/\n/**\n * @event module:svgcanvas.SvgCanvas#event:cleared\n * @type {undefined}\n*/\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:exported\n * @type {module:svgcanvas.ImageExportedResults}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:exportedPDF\n * @type {module:svgcanvas.PDFExportedResults}\n */\n/**\n * Creating a cover-all class until {@link https://github.com/jsdoc3/jsdoc/issues/1545} may be supported.\n * `undefined` may be returned by {@link module:svgcanvas.SvgCanvas#event:extension_added} if the extension's `init` returns `undefined` It is also the type for the following events \"zoomDone\", \"unsetnonce\", \"cleared\", and \"extensions_added\".\n * @event module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}\n */\n\n/**\n * The promise return, if present, resolves to `undefined`\n *  (`extension_added`, `exported`, `saved`)\n * @typedef {Promise|undefined} module:svgcanvas.EventHandlerReturn\n*/\n\n/**\n* @callback module:svgcanvas.EventHandler\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg\n* @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n* @returns {module:svgcanvas.EventHandlerReturn}\n*/\n\n/**\n* Attaches a callback function to an event.\n* @function module:svgcanvas.SvgCanvas#bind\n* @param {\"changed\"|\"contextset\"|\"selected\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String indicating the name of the event\n* @param {module:svgcanvas.EventHandler} f - The callback function to bind to the event\n* @returns {module:svgcanvas.EventHandler} The previous event\n*/\ncanvas.bind = function (ev, f) {\n  const old = events[ev];\n  events[ev] = f;\n  return old;\n};\n\n/**\n* Runs the SVG Document through the sanitizer and then updates its paths.\n* @function module:svgcanvas.SvgCanvas#prepareSvg\n* @param {XMLDocument} newDoc - The SVG DOM document\n* @returns {undefined}\n*/\nthis.prepareSvg = function (newDoc) {\n  this.sanitizeSvg(newDoc.documentElement);\n\n  // convert paths into absolute commands\n  const paths = [...newDoc.getElementsByTagNameNS(NS.SVG, 'path')];\n  paths.forEach((path) => {\n    path.setAttribute('d', pathActions.convertPath(path));\n    pathActions.fixEnd(path);\n  });\n};\n\n/**\n* Hack for Firefox bugs where text element features aren't updated or get\n* messed up. See issue 136 and issue 137.\n* This function clones the element and re-selects it.\n* @function module:svgcanvas~ffClone\n* @todo Test for this bug on load and add it to \"support\" object instead of\n* browser sniffing\n* @param {Element} elem - The (text) DOM element to clone\n* @returns {Element} Cloned element\n*/\nconst ffClone = function (elem) {\n  if (!isGecko()) { return elem; }\n  const clone = elem.cloneNode(true);\n  elem.before(clone);\n  elem.remove();\n  selectorManager.releaseSelector(elem);\n  selectedElements[0] = clone;\n  selectorManager.requestSelector(clone).showGrips(true);\n  return clone;\n};\n\n// `this.each` is deprecated, if any extension used this it can be recreated by doing this:\n// * @example $(canvas.getRootElem()).children().each(...)\n// * @function module:svgcanvas.SvgCanvas#each\n// this.each = function (cb) {\n//  $(svgroot).children().each(cb);\n// };\n\n/**\n* Removes any old rotations if present, prepends a new rotation at the\n* transformed center.\n* @function module:svgcanvas.SvgCanvas#setRotationAngle\n* @param {string|Float} val - The new rotation angle in degrees\n* @param {boolean} preventUndo - Indicates whether the action should be undoable or not\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRotationAngle = function (val, preventUndo) {\n  // ensure val is the proper type\n  val = parseFloat(val);\n  const elem = selectedElements[0];\n  const oldTransform = elem.getAttribute('transform');\n  const bbox = utilsGetBBox(elem);\n  const cx = bbox.x + bbox.width / 2, cy = bbox.y + bbox.height / 2;\n  const tlist = getTransformList(elem);\n\n  // only remove the real rotational transform if present (i.e. at index=0)\n  if (tlist.numberOfItems > 0) {\n    const xform = tlist.getItem(0);\n    if (xform.type === 4) {\n      tlist.removeItem(0);\n    }\n  }\n  // find Rnc and insert it\n  if (val !== 0) {\n    const center = transformPoint(cx, cy, transformListToTransform(tlist).matrix);\n    const Rnc = svgroot.createSVGTransform();\n    Rnc.setRotate(val, center.x, center.y);\n    if (tlist.numberOfItems) {\n      tlist.insertItemBefore(Rnc, 0);\n    } else {\n      tlist.appendItem(Rnc);\n    }\n  } else if (tlist.numberOfItems === 0) {\n    elem.removeAttribute('transform');\n  }\n\n  if (!preventUndo) {\n    // we need to undo it, then redo it so it can be undo-able! :)\n    // TODO: figure out how to make changes to transform list undo-able cross-browser?\n    const newTransform = elem.getAttribute('transform');\n    elem.setAttribute('transform', oldTransform);\n    changeSelectedAttribute('transform', newTransform, selectedElements);\n    call('changed', selectedElements);\n  }\n  // const pointGripContainer = getElem('pathpointgrip_container');\n  // if (elem.nodeName === 'path' && pointGripContainer) {\n  //   pathActions.setPointContainerTransform(elem.getAttribute('transform'));\n  // }\n  const selector = selectorManager.requestSelector(selectedElements[0]);\n  selector.resize();\n  Selector.updateGripCursors(val);\n};\n\n/**\n* Runs `recalculateDimensions` on the selected elements,\n* adding the changes to a single batch command.\n* @function module:svgcanvas.SvgCanvas#recalculateAllSelectedDimensions\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nconst recalculateAllSelectedDimensions = this.recalculateAllSelectedDimensions = function () {\n  const text = (currentResizeMode === 'none' ? 'position' : 'size');\n  const batchCmd = new BatchCommand(text);\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    // if (getRotationAngle(elem) && !hasMatrixTransform(getTransformList(elem))) { continue; }\n    const cmd = recalculateDimensions(elem);\n    if (cmd) {\n      batchCmd.addSubCommand(cmd);\n    }\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n * Debug tool to easily see the current matrix in the browser's console.\n * @function module:svgcanvas~logMatrix\n * @param {SVGMatrix} m The matrix\n * @returns {undefined}\n */\nconst logMatrix = function (m) {\n  console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console\n};\n\n// Root Current Transformation Matrix in user units\nlet rootSctm = null;\n\n/**\n* Group: Selection\n*/\n\n// TODO: do we need to worry about selectedBBoxes here?\n\n/**\n* Selects only the given elements, shortcut for `clearSelection(); addToSelection()`.\n* @function module:svgcanvas.SvgCanvas#selectOnly\n* @param {Element[]} elems - an array of DOM elements to be selected\n* @param {boolean} showGrips - Indicates whether the resize grips should be shown\n* @returns {undefined}\n*/\nconst selectOnly = this.selectOnly = function (elems, showGrips) {\n  clearSelection(true);\n  addToSelection(elems, showGrips);\n};\n\n// TODO: could use slice here to make this faster?\n// TODO: should the 'selected' handler\n\n/**\n* Removes elements from the selection.\n* @function module:svgcanvas.SvgCanvas#removeFromSelection\n* @param {Element[]} elemsToRemove - An array of elements to remove from selection\n* @returns {undefined}\n*/\n/* const removeFromSelection = */ this.removeFromSelection = function (elemsToRemove) {\n  if (isNullish(selectedElements[0])) { return; }\n  if (!elemsToRemove.length) { return; }\n\n  // find every element and remove it from our array copy\n  const newSelectedItems = [],\n    len = selectedElements.length;\n  for (let i = 0; i < len; ++i) {\n    const elem = selectedElements[i];\n    if (elem) {\n      // keep the item\n      if (!elemsToRemove.includes(elem)) {\n        newSelectedItems.push(elem);\n      } else { // remove the item and its selector\n        selectorManager.releaseSelector(elem);\n      }\n    }\n  }\n  // the copy becomes the master now\n  selectedElements = newSelectedItems;\n};\n\n/**\n* Clears the selection, then adds all elements in the current layer to the selection.\n* @function module:svgcanvas.SvgCanvas#selectAllInCurrentLayer\n* @returns {undefined}\n*/\nthis.selectAllInCurrentLayer = function () {\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (currentLayer) {\n    currentMode = 'select';\n    selectOnly($(currentGroup || currentLayer).children());\n  }\n};\n\nlet drawnPath = null;\n\n// Mouse events\n(function () {\nconst freehand = {\n  minx: null,\n  miny: null,\n  maxx: null,\n  maxy: null\n};\nconst THRESHOLD_DIST = 0.8,\n  STEP_COUNT = 10;\nlet dAttr = null,\n  startX = null,\n  startY = null,\n  rStartX = null,\n  rStartY = null,\n  initBbox = {},\n  sumDistance = 0,\n  controllPoint2 = {x: 0, y: 0},\n  controllPoint1 = {x: 0, y: 0},\n  start = {x: 0, y: 0},\n  end = {x: 0, y: 0},\n  bSpline = {x: 0, y: 0},\n  nextPos = {x: 0, y: 0},\n  parameter,\n  nextParameter;\n\nconst getBsplinePoint = function (t) {\n  const spline = {x: 0, y: 0},\n    p0 = controllPoint2,\n    p1 = controllPoint1,\n    p2 = start,\n    p3 = end,\n    S = 1.0 / 6.0,\n    t2 = t * t,\n    t3 = t2 * t;\n\n  const m = [\n    [-1, 3, -3, 1],\n    [3, -6, 3, 0],\n    [-3, 0, 3, 0],\n    [1, 4, 1, 0]\n  ];\n\n  spline.x = S * (\n    (p0.x * m[0][0] + p1.x * m[0][1] + p2.x * m[0][2] + p3.x * m[0][3]) * t3 +\n      (p0.x * m[1][0] + p1.x * m[1][1] + p2.x * m[1][2] + p3.x * m[1][3]) * t2 +\n      (p0.x * m[2][0] + p1.x * m[2][1] + p2.x * m[2][2] + p3.x * m[2][3]) * t +\n      (p0.x * m[3][0] + p1.x * m[3][1] + p2.x * m[3][2] + p3.x * m[3][3])\n  );\n  spline.y = S * (\n    (p0.y * m[0][0] + p1.y * m[0][1] + p2.y * m[0][2] + p3.y * m[0][3]) * t3 +\n      (p0.y * m[1][0] + p1.y * m[1][1] + p2.y * m[1][2] + p3.y * m[1][3]) * t2 +\n      (p0.y * m[2][0] + p1.y * m[2][1] + p2.y * m[2][2] + p3.y * m[2][3]) * t +\n      (p0.y * m[3][0] + p1.y * m[3][1] + p2.y * m[3][2] + p3.y * m[3][3])\n  );\n\n  return {\n    x: spline.x,\n    y: spline.y\n  };\n};\n/**\n * Follows these conditions:\n * - When we are in a create mode, the element is added to the canvas but the\n *   action is not recorded until mousing up.\n * - When we are in select mode, select the element, remember the position\n *   and do nothing else.\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseDown\n * @returns {undefined}\n */\nconst mouseDown = function (evt) {\n  if (canvas.spaceKey || evt.button === 1) { return; }\n\n  const rightClick = evt.button === 2;\n\n  if (evt.altKey) { // duplicate when dragging\n    canvas.cloneSelectedElements(0, 0);\n  }\n\n  rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom;\n\n  evt.preventDefault();\n\n  if (rightClick) {\n    currentMode = 'select';\n    lastClickPoint = pt;\n  }\n\n  // This would seem to be unnecessary...\n  // if (!['select', 'resize'].includes(currentMode)) {\n  //   setGradient();\n  // }\n\n  let x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n  let mouseTarget = getMouseTarget(evt);\n\n  if (mouseTarget.tagName === 'a' && mouseTarget.childNodes.length === 1) {\n    mouseTarget = mouseTarget.firstChild;\n  }\n\n  // realX/y ignores grid-snap value\n  const realX = x;\n  rStartX = startX = x;\n  const realY = y;\n  rStartY = startY = y;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n    startX = snapToGrid(startX);\n    startY = snapToGrid(startY);\n  }\n\n  // if it is a selector grip, then it must be a single element selected,\n  // set the mouseTarget to that and update the mode to rotate/resize\n\n  if (mouseTarget === selectorManager.selectorParentGroup && !isNullish(selectedElements[0])) {\n    const grip = evt.target;\n    const griptype = elData(grip, 'type');\n    // rotating\n    if (griptype === 'rotate') {\n      currentMode = 'rotate';\n    // resizing\n    } else if (griptype === 'resize') {\n      currentMode = 'resize';\n      currentResizeMode = elData(grip, 'dir');\n    }\n    mouseTarget = selectedElements[0];\n  }\n\n  startTransform = mouseTarget.getAttribute('transform');\n\n  const tlist = getTransformList(mouseTarget);\n  switch (currentMode) {\n  case 'select':\n    started = true;\n    currentResizeMode = 'none';\n    if (rightClick) { started = false; }\n\n    if (mouseTarget !== svgroot) {\n      // if this element is not yet selected, clear selection and select it\n      if (!selectedElements.includes(mouseTarget)) {\n        // only clear selection if shift is not pressed (otherwise, add\n        // element to selection)\n        if (!evt.shiftKey) {\n          // No need to do the call here as it will be done on addToSelection\n          clearSelection(true);\n        }\n        addToSelection([mouseTarget]);\n        justSelected = mouseTarget;\n        pathActions.clear();\n      }\n      // else if it's a path, go into pathedit mode in mouseup\n\n      if (!rightClick) {\n        // insert a dummy transform so if the element(s) are moved it will have\n        // a transform to use for its translate\n        for (let i = 0; i < selectedElements.length; ++i) {\n          if (isNullish(selectedElements[i])) { continue; }\n          const slist = getTransformList(selectedElements[i]);\n          if (slist.numberOfItems) {\n            slist.insertItemBefore(svgroot.createSVGTransform(), 0);\n          } else {\n            slist.appendItem(svgroot.createSVGTransform());\n          }\n        }\n      }\n    } else if (!rightClick) {\n      clearSelection();\n      currentMode = 'multiselect';\n      if (isNullish(rubberBox)) {\n        rubberBox = selectorManager.getRubberBandBox();\n      }\n      rStartX *= currentZoom;\n      rStartY *= currentZoom;\n      // console.log('p',[evt.pageX, evt.pageY]);\n      // console.log('c',[evt.clientX, evt.clientY]);\n      // console.log('o',[evt.offsetX, evt.offsetY]);\n      // console.log('s',[startX, startY]);\n\n      assignAttributes(rubberBox, {\n        x: rStartX,\n        y: rStartY,\n        width: 0,\n        height: 0,\n        display: 'inline'\n      }, 100);\n    }\n    break;\n  case 'zoom':\n    started = true;\n    if (isNullish(rubberBox)) {\n      rubberBox = selectorManager.getRubberBandBox();\n    }\n    assignAttributes(rubberBox, {\n      x: realX * currentZoom,\n      y: realX * currentZoom,\n      width: 0,\n      height: 0,\n      display: 'inline'\n    }, 100);\n    break;\n  case 'resize': {\n    started = true;\n    startX = x;\n    startY = y;\n\n    // Getting the BBox from the selection box, since we know we\n    // want to orient around it\n    initBbox = utilsGetBBox($('#selectedBox0')[0]);\n    const bb = {};\n    $.each(initBbox, function (key, val) {\n      bb[key] = val / currentZoom;\n    });\n    initBbox = bb;\n\n    // append three dummy transforms to the tlist so that\n    // we can translate,scale,translate in mousemove\n    const pos = getRotationAngle(mouseTarget) ? 1 : 0;\n\n    if (hasMatrixTransform(tlist)) {\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n    } else {\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n\n      if (supportsNonScalingStroke()) {\n        // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):\n        // https://code.google.com/p/svg-edit/issues/detail?id=904\n        // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625\n        // TODO: Remove this workaround once vendor fixes the issue\n        const iswebkit = isWebkit();\n\n        let delayedStroke;\n        if (iswebkit) {\n          delayedStroke = function (ele) {\n            const _stroke = ele.getAttribute('stroke');\n            ele.removeAttribute('stroke');\n            // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker\n            if (_stroke !== null) setTimeout(function () { ele.setAttribute('stroke', _stroke); }, 0);\n          };\n        }\n        mouseTarget.style.vectorEffect = 'non-scaling-stroke';\n        if (iswebkit) { delayedStroke(mouseTarget); }\n\n        const all = mouseTarget.getElementsByTagName('*'),\n          len = all.length;\n        for (let i = 0; i < len; i++) {\n          if (!all[i].style) { // mathML\n            continue;\n          }\n          all[i].style.vectorEffect = 'non-scaling-stroke';\n          if (iswebkit) { delayedStroke(all[i]); }\n        }\n      }\n    }\n    break;\n  } case 'fhellipse':\n  case 'fhrect':\n  case 'fhpath':\n    start.x = realX;\n    start.y = realY;\n    started = true;\n    dAttr = realX + ',' + realY + ' ';\n    // Commented out as doing nothing now:\n    // strokeW = parseFloat(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'polyline',\n      curStyles: true,\n      attr: {\n        points: dAttr,\n        id: getNextId(),\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        'stroke-linecap': 'round',\n        style: 'pointer-events:none'\n      }\n    });\n    freehand.minx = realX;\n    freehand.maxx = realX;\n    freehand.miny = realY;\n    freehand.maxy = realY;\n    break;\n  case 'image': {\n    started = true;\n    const newImage = addSVGElementFromJson({\n      element: 'image',\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:inherit'\n      }\n    });\n    setHref(newImage, lastGoodImgUrl);\n    preventClickDefault(newImage);\n    break;\n  } case 'square':\n    // FIXME: once we create the rect, we lose information that this was a square\n    // (for resizing purposes this could be important)\n    // Fallthrough\n  case 'rect':\n    started = true;\n    startX = x;\n    startY = y;\n    addSVGElementFromJson({\n      element: 'rect',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'line': {\n    started = true;\n    const strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'line',\n      curStyles: true,\n      attr: {\n        x1: x,\n        y1: y,\n        x2: x,\n        y2: y,\n        id: getNextId(),\n        stroke: curShape.stroke,\n        'stroke-width': strokeW,\n        'stroke-dasharray': curShape.stroke_dasharray,\n        'stroke-linejoin': curShape.stroke_linejoin,\n        'stroke-linecap': curShape.stroke_linecap,\n        'stroke-opacity': curShape.stroke_opacity,\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:none'\n      }\n    });\n    break;\n  } case 'circle':\n    started = true;\n    addSVGElementFromJson({\n      element: 'circle',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        r: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'ellipse':\n    started = true;\n    addSVGElementFromJson({\n      element: 'ellipse',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        rx: 0,\n        ry: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'text':\n    started = true;\n    /* const newText = */ addSVGElementFromJson({\n      element: 'text',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        id: getNextId(),\n        fill: curText.fill,\n        'stroke-width': curText.stroke_width,\n        'font-size': curText.font_size,\n        'font-family': curText.font_family,\n        'text-anchor': 'middle',\n        'xml:space': 'preserve',\n        opacity: curShape.opacity\n      }\n    });\n    // newText.textContent = 'text';\n    break;\n  case 'path':\n    // Fall through\n  case 'pathedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    pathActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'textedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    textActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'rotate':\n    started = true;\n    // we are starting an undoable change (a drag-rotation)\n    canvas.undoMgr.beginUndoableChange('transform', selectedElements);\n    break;\n  default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n   * The main (left) mouse button is held down on the canvas area\n   * @event module:svgcanvas.SvgCanvas#event:ext-mouseDown\n   * @type {PlainObject}\n   * @property {MouseEvent} event The event object\n   * @property {Float} start_x x coordinate on canvas\n   * @property {Float} start_y y coordinate on canvas\n   * @property {Element[]} selectedElements An array of the selected Elements\n  */\n  const extResult = runExtensions('mouseDown', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseDown} */ {\n    event: evt,\n    start_x: startX,\n    start_y: startY,\n    selectedElements\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r && r.started) {\n      started = true;\n    }\n  });\n};\n\n// in this function we do not record any state changes yet (but we do update\n// any elements that are still being created, moved or resized on the canvas)\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:transition\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseMove\n * @returns {undefined}\n */\nconst mouseMove = function (evt) {\n  if (!started) { return; }\n  if (evt.button === 1 || canvas.spaceKey) { return; }\n\n  let i, xya, c, cx, cy, dx, dy, len, angle, box,\n    selected = selectedElements[0];\n  const\n    pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    shape = getElem(getId());\n\n  let realX = mouseX / currentZoom;\n  let x = realX;\n  let realY = mouseY / currentZoom;\n  let y = realY;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n  }\n\n  evt.preventDefault();\n  let tlist;\n  switch (currentMode) {\n  case 'select': {\n    // we temporarily use a translate on the element(s) being dragged\n    // this transform is removed upon mousing up and the element is\n    // relocated to the new location\n    if (selectedElements[0] !== null) {\n      dx = x - startX;\n      dy = y - startY;\n\n      if (curConfig.gridSnapping) {\n        dx = snapToGrid(dx);\n        dy = snapToGrid(dy);\n      }\n\n      /*\n      // Commenting out as currently has no effect\n      if (evt.shiftKey) {\n        xya = snapToAngle(startX, startY, x, y);\n        ({x, y} = xya);\n      }\n      */\n\n      if (dx !== 0 || dy !== 0) {\n        len = selectedElements.length;\n        for (i = 0; i < len; ++i) {\n          selected = selectedElements[i];\n          if (isNullish(selected)) { break; }\n          // if (i === 0) {\n          //   const box = utilsGetBBox(selected);\n          //     selectedBBoxes[i].x = box.x + dx;\n          //     selectedBBoxes[i].y = box.y + dy;\n          // }\n\n          // update the dummy transform in our transform list\n          // to be a translate\n          const xform = svgroot.createSVGTransform();\n          tlist = getTransformList(selected);\n          // Note that if Webkit and there's no ID for this\n          // element, the dummy transform may have gotten lost.\n          // This results in unexpected behaviour\n\n          xform.setTranslate(dx, dy);\n          if (tlist.numberOfItems) {\n            tlist.replaceItem(xform, 0);\n          } else {\n            tlist.appendItem(xform);\n          }\n\n          // update our internal bbox that we're tracking while dragging\n          selectorManager.requestSelector(selected).resize();\n        }\n\n        call('transition', selectedElements);\n      }\n    }\n    break;\n  } case 'multiselect': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY)\n    }, 100);\n\n    // for each selected:\n    // - if newList contains selected, do nothing\n    // - if newList doesn't contain selected, remove it from selected\n    // - for any newList that was not in selectedElements, add it to selected\n    const elemsToRemove = selectedElements.slice(), elemsToAdd = [],\n      newList = getIntersectionList();\n\n    // For every element in the intersection, add if not present in selectedElements.\n    len = newList.length;\n    for (i = 0; i < len; ++i) {\n      const intElem = newList[i];\n      // Found an element that was not selected before, so we should add it.\n      if (!selectedElements.includes(intElem)) {\n        elemsToAdd.push(intElem);\n      }\n      // Found an element that was already selected, so we shouldn't remove it.\n      const foundInd = elemsToRemove.indexOf(intElem);\n      if (foundInd !== -1) {\n        elemsToRemove.splice(foundInd, 1);\n      }\n    }\n\n    if (elemsToRemove.length > 0) {\n      canvas.removeFromSelection(elemsToRemove);\n    }\n\n    if (elemsToAdd.length > 0) {\n      canvas.addToSelection(elemsToAdd);\n    }\n\n    break;\n  } case 'resize': {\n    // we track the resize bounding box and translate/scale the selected element\n    // while the mouse is down, when mouse goes up, we use this to recalculate\n    // the shape's coordinates\n    tlist = getTransformList(selected);\n    const hasMatrix = hasMatrixTransform(tlist);\n    box = hasMatrix ? initBbox : utilsGetBBox(selected);\n    let left = box.x,\n      top = box.y,\n      {width, height} = box;\n    dx = (x - startX);\n    dy = (y - startY);\n\n    if (curConfig.gridSnapping) {\n      dx = snapToGrid(dx);\n      dy = snapToGrid(dy);\n      height = snapToGrid(height);\n      width = snapToGrid(width);\n    }\n\n    // if rotated, adjust the dx,dy values\n    angle = getRotationAngle(selected);\n    if (angle) {\n      const r = Math.sqrt(dx * dx + dy * dy),\n        theta = Math.atan2(dy, dx) - angle * Math.PI / 180.0;\n      dx = r * Math.cos(theta);\n      dy = r * Math.sin(theta);\n    }\n\n    // if not stretching in y direction, set dy to 0\n    // if not stretching in x direction, set dx to 0\n    if (!currentResizeMode.includes('n') && !currentResizeMode.includes('s')) {\n      dy = 0;\n    }\n    if (!currentResizeMode.includes('e') && !currentResizeMode.includes('w')) {\n      dx = 0;\n    }\n\n    let // ts = null,\n      tx = 0, ty = 0,\n      sy = height ? (height + dy) / height : 1,\n      sx = width ? (width + dx) / width : 1;\n    // if we are dragging on the north side, then adjust the scale factor and ty\n    if (currentResizeMode.includes('n')) {\n      sy = height ? (height - dy) / height : 1;\n      ty = height;\n    }\n\n    // if we dragging on the east side, then adjust the scale factor and tx\n    if (currentResizeMode.includes('w')) {\n      sx = width ? (width - dx) / width : 1;\n      tx = width;\n    }\n\n    // update the transform list with translate,scale,translate\n    const translateOrigin = svgroot.createSVGTransform(),\n      scale = svgroot.createSVGTransform(),\n      translateBack = svgroot.createSVGTransform();\n\n    if (curConfig.gridSnapping) {\n      left = snapToGrid(left);\n      tx = snapToGrid(tx);\n      top = snapToGrid(top);\n      ty = snapToGrid(ty);\n    }\n\n    translateOrigin.setTranslate(-(left + tx), -(top + ty));\n    if (evt.shiftKey) {\n      if (sx === 1) {\n        sx = sy;\n      } else { sy = sx; }\n    }\n    scale.setScale(sx, sy);\n\n    translateBack.setTranslate(left + tx, top + ty);\n    if (hasMatrix) {\n      const diff = angle ? 1 : 0;\n      tlist.replaceItem(translateOrigin, 2 + diff);\n      tlist.replaceItem(scale, 1 + diff);\n      tlist.replaceItem(translateBack, Number(diff));\n    } else {\n      const N = tlist.numberOfItems;\n      tlist.replaceItem(translateBack, N - 3);\n      tlist.replaceItem(scale, N - 2);\n      tlist.replaceItem(translateOrigin, N - 1);\n    }\n\n    selectorManager.requestSelector(selected).resize();\n\n    call('transition', selectedElements);\n\n    break;\n  } case 'zoom': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX * currentZoom, realX),\n      y: Math.min(rStartY * currentZoom, realY),\n      width: Math.abs(realX - rStartX * currentZoom),\n      height: Math.abs(realY - rStartY * currentZoom)\n    }, 100);\n    break;\n  } case 'text': {\n    assignAttributes(shape, {\n      x,\n      y\n    }, 1000);\n    break;\n  } case 'line': {\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n    }\n\n    let x2 = x;\n    let y2 = y;\n\n    if (evt.shiftKey) {\n      xya = snapToAngle(startX, startY, x2, y2);\n      x2 = xya.x;\n      y2 = xya.y;\n    }\n\n    shape.setAttribute('x2', x2);\n    shape.setAttribute('y2', y2);\n    break;\n  } case 'foreignObject':\n    // fall through\n  case 'square':\n    // fall through\n  case 'rect':\n    // fall through\n  case 'image': {\n    const square = (currentMode === 'square') || evt.shiftKey;\n    let\n      w = Math.abs(x - startX),\n      h = Math.abs(y - startY);\n    let newX, newY;\n    if (square) {\n      w = h = Math.max(w, h);\n      newX = startX < x ? startX : startX - w;\n      newY = startY < y ? startY : startY - h;\n    } else {\n      newX = Math.min(startX, x);\n      newY = Math.min(startY, y);\n    }\n\n    if (curConfig.gridSnapping) {\n      w = snapToGrid(w);\n      h = snapToGrid(h);\n      newX = snapToGrid(newX);\n      newY = snapToGrid(newY);\n    }\n\n    assignAttributes(shape, {\n      width: w,\n      height: h,\n      x: newX,\n      y: newY\n    }, 1000);\n\n    break;\n  } case 'circle': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    let rad = Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy));\n    if (curConfig.gridSnapping) {\n      rad = snapToGrid(rad);\n    }\n    shape.setAttribute('r', rad);\n    break;\n  } case 'ellipse': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      cx = snapToGrid(cx);\n      y = snapToGrid(y);\n      cy = snapToGrid(cy);\n    }\n    shape.setAttribute('rx', Math.abs(x - cx));\n    const ry = Math.abs(evt.shiftKey ? (x - cx) : (y - cy));\n    shape.setAttribute('ry', ry);\n    break;\n  }\n  case 'fhellipse':\n  case 'fhrect': {\n    freehand.minx = Math.min(realX, freehand.minx);\n    freehand.maxx = Math.max(realX, freehand.maxx);\n    freehand.miny = Math.min(realY, freehand.miny);\n    freehand.maxy = Math.max(realY, freehand.maxy);\n  }\n  // Fallthrough\n  case 'fhpath': {\n    // dAttr += + realX + ',' + realY + ' ';\n    // shape.setAttribute('points', dAttr);\n    end.x = realX; end.y = realY;\n    if (controllPoint2.x && controllPoint2.y) {\n      for (i = 0; i < STEP_COUNT - 1; i++) {\n        parameter = i / STEP_COUNT;\n        nextParameter = (i + 1) / STEP_COUNT;\n        bSpline = getBsplinePoint(nextParameter);\n        nextPos = bSpline;\n        bSpline = getBsplinePoint(parameter);\n        sumDistance += Math.sqrt((nextPos.x - bSpline.x) * (nextPos.x - bSpline.x) + (nextPos.y - bSpline.y) * (nextPos.y - bSpline.y));\n        if (sumDistance > THRESHOLD_DIST) {\n          sumDistance -= THRESHOLD_DIST;\n\n          // Faster than completely re-writing the points attribute.\n          const point = svgcontent.createSVGPoint();\n          point.x = bSpline.x;\n          point.y = bSpline.y;\n          shape.points.appendItem(point);\n        }\n      }\n    }\n    controllPoint2 = {x: controllPoint1.x, y: controllPoint1.y};\n    controllPoint1 = {x: start.x, y: start.y};\n    start = {x: end.x, y: end.y};\n    break;\n  // update path stretch line coordinates\n} case 'path':\n  // fall through\n  case 'pathedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n      startX = snapToGrid(startX);\n      startY = snapToGrid(startY);\n    }\n    if (evt.shiftKey) {\n      const {path} = pathModule;\n      let x1, y1;\n      if (path) {\n        x1 = path.dragging ? path.dragging[0] : startX;\n        y1 = path.dragging ? path.dragging[1] : startY;\n      } else {\n        x1 = startX;\n        y1 = startY;\n      }\n      xya = snapToAngle(x1, y1, x, y);\n      ({x, y} = xya);\n    }\n\n    if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n      realX *= currentZoom;\n      realY *= currentZoom;\n      assignAttributes(rubberBox, {\n        x: Math.min(rStartX * currentZoom, realX),\n        y: Math.min(rStartY * currentZoom, realY),\n        width: Math.abs(realX - rStartX * currentZoom),\n        height: Math.abs(realY - rStartY * currentZoom)\n      }, 100);\n    }\n    pathActions.mouseMove(x, y);\n\n    break;\n  } case 'textedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n    // if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n    //   assignAttributes(rubberBox, {\n    //     x: Math.min(startX, x),\n    //     y: Math.min(startY, y),\n    //     width: Math.abs(x - startX),\n    //     height: Math.abs(y - startY)\n    //   }, 100);\n    // }\n\n    textActions.mouseMove(mouseX, mouseY);\n\n    break;\n  } case 'rotate': {\n    box = utilsGetBBox(selected);\n    cx = box.x + box.width / 2;\n    cy = box.y + box.height / 2;\n    const m = getMatrix(selected),\n      center = transformPoint(cx, cy, m);\n    cx = center.x;\n    cy = center.y;\n    angle = ((Math.atan2(cy - y, cx - x) * (180 / Math.PI)) - 90) % 360;\n    if (curConfig.gridSnapping) {\n      angle = snapToGrid(angle);\n    }\n    if (evt.shiftKey) { // restrict rotations to nice angles (WRS)\n      const snap = 45;\n      angle = Math.round(angle / snap) * snap;\n    }\n\n    canvas.setRotationAngle(angle < -180 ? (360 + angle) : angle, true);\n    call('transition', selectedElements);\n    break;\n  } default:\n    break;\n  }\n\n  /**\n  * The mouse has moved on the canvas area\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseMove\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  * @property {Element} selected Refers to the first selected element\n  */\n  runExtensions('mouseMove', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseMove} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY,\n    selected\n  });\n}; // mouseMove()\n\n// - in create mode, the element's opacity is set properly, we create an InsertElementCommand\n// and store it on the Undo stack\n// - in move/resize mode, the element's attributes which were affected by the move/resize are\n// identified, a ChangeElementCommand is created and stored on the stack for those attrs\n// this is done in when we recalculate the selected dimensions()\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:zoomed\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseUp\n * @returns {undefined}\n */\nconst mouseUp = function (evt) {\n  if (evt.button === 2) { return; }\n  const tempJustSelected = justSelected;\n  justSelected = null;\n  if (!started) { return; }\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n\n  let element = getElem(getId());\n  let keep = false;\n\n  const realX = x;\n  const realY = y;\n\n  // TODO: Make true when in multi-unit mode\n  const useUnit = false; // (curConfig.baseUnit !== 'px');\n  started = false;\n  let attrs, t;\n  switch (currentMode) {\n  // intentionally fall-through to select here\n  case 'resize':\n  case 'multiselect':\n    if (!isNullish(rubberBox)) {\n      rubberBox.setAttribute('display', 'none');\n      curBBoxes = [];\n    }\n    currentMode = 'select';\n    // Fallthrough\n  case 'select':\n    if (!isNullish(selectedElements[0])) {\n      // if we only have one selected element\n      if (isNullish(selectedElements[1])) {\n        // set our current stroke/fill properties to the element's\n        const selected = selectedElements[0];\n        switch (selected.tagName) {\n        case 'g':\n        case 'use':\n        case 'image':\n        case 'foreignObject':\n          break;\n        default:\n          curProperties.fill = selected.getAttribute('fill');\n          curProperties.fill_opacity = selected.getAttribute('fill-opacity');\n          curProperties.stroke = selected.getAttribute('stroke');\n          curProperties.stroke_opacity = selected.getAttribute('stroke-opacity');\n          curProperties.stroke_width = selected.getAttribute('stroke-width');\n          curProperties.stroke_dasharray = selected.getAttribute('stroke-dasharray');\n          curProperties.stroke_linejoin = selected.getAttribute('stroke-linejoin');\n          curProperties.stroke_linecap = selected.getAttribute('stroke-linecap');\n        }\n\n        if (selected.tagName === 'text') {\n          curText.font_size = selected.getAttribute('font-size');\n          curText.font_family = selected.getAttribute('font-family');\n        }\n        selectorManager.requestSelector(selected).showGrips(true);\n\n        // This shouldn't be necessary as it was done on mouseDown...\n        // call('selected', [selected]);\n      }\n      // always recalculate dimensions to strip off stray identity transforms\n      recalculateAllSelectedDimensions();\n      // if it was being dragged/resized\n      if (realX !== rStartX || realY !== rStartY) {\n        const len = selectedElements.length;\n        for (let i = 0; i < len; ++i) {\n          if (isNullish(selectedElements[i])) { break; }\n          if (!selectedElements[i].firstChild) {\n            // Not needed for groups (incorrectly resizes elems), possibly not needed at all?\n            selectorManager.requestSelector(selectedElements[i]).resize();\n          }\n        }\n      // no change in position/size, so maybe we should move to pathedit\n      } else {\n        t = evt.target;\n        if (selectedElements[0].nodeName === 'path' && isNullish(selectedElements[1])) {\n          pathActions.select(selectedElements[0]);\n        // if it was a path\n        // else, if it was selected and this is a shift-click, remove it from selection\n        } else if (evt.shiftKey) {\n          if (tempJustSelected !== t) {\n            canvas.removeFromSelection([t]);\n          }\n        }\n      } // no change in mouse position\n\n      // Remove non-scaling stroke\n      if (supportsNonScalingStroke()) {\n        const elem = selectedElements[0];\n        if (elem) {\n          elem.removeAttribute('style');\n          walkTree(elem, function (el) {\n            el.removeAttribute('style');\n          });\n        }\n      }\n    }\n    return;\n  case 'zoom': {\n    if (!isNullish(rubberBox)) {\n      rubberBox.setAttribute('display', 'none');\n    }\n    const factor = evt.shiftKey ? 0.5 : 2;\n    call('zoomed', {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY),\n      factor\n    });\n    return;\n  } case 'fhpath': {\n    // Check that the path contains at least 2 points; a degenerate one-point path\n    // causes problems.\n    // Webkit ignores how we set the points attribute with commas and uses space\n    // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870\n    sumDistance = 0;\n    controllPoint2 = {x: 0, y: 0};\n    controllPoint1 = {x: 0, y: 0};\n    start = {x: 0, y: 0};\n    end = {x: 0, y: 0};\n    const coords = element.getAttribute('points');\n    const commaIndex = coords.indexOf(',');\n    if (commaIndex >= 0) {\n      keep = coords.indexOf(',', commaIndex + 1) >= 0;\n    } else {\n      keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;\n    }\n    if (keep) {\n      element = pathActions.smoothPolylineIntoPath(element);\n    }\n    break;\n  } case 'line':\n    attrs = $(element).attr(['x1', 'x2', 'y1', 'y2']);\n    keep = (attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2);\n    break;\n  case 'foreignObject':\n  case 'square':\n  case 'rect':\n  case 'image':\n    attrs = $(element).attr(['width', 'height']);\n    // Image should be kept regardless of size (use inherit dimensions later)\n    keep = (attrs.width || attrs.height) || currentMode === 'image';\n    break;\n  case 'circle':\n    keep = (element.getAttribute('r') !== '0');\n    break;\n  case 'ellipse':\n    attrs = $(element).attr(['rx', 'ry']);\n    keep = (attrs.rx || attrs.ry);\n    break;\n  case 'fhellipse':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'ellipse',\n        curStyles: true,\n        attr: {\n          cx: (freehand.minx + freehand.maxx) / 2,\n          cy: (freehand.miny + freehand.maxy) / 2,\n          rx: (freehand.maxx - freehand.minx) / 2,\n          ry: (freehand.maxy - freehand.miny) / 2,\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'fhrect':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'rect',\n        curStyles: true,\n        attr: {\n          x: freehand.minx,\n          y: freehand.miny,\n          width: (freehand.maxx - freehand.minx),\n          height: (freehand.maxy - freehand.miny),\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'text':\n    keep = true;\n    selectOnly([element]);\n    textActions.start(element);\n    break;\n  case 'path': {\n    // set element to null here so that it is not removed nor finalized\n    element = null;\n    // continue to be set to true so that mouseMove happens\n    started = true;\n\n    const res = pathActions.mouseUp(evt, element, mouseX, mouseY);\n    ({element} = res);\n    ({keep} = res);\n    break;\n  } case 'pathedit':\n    keep = true;\n    element = null;\n    pathActions.mouseUp(evt);\n    break;\n  case 'textedit':\n    keep = false;\n    element = null;\n    textActions.mouseUp(evt, mouseX, mouseY);\n    break;\n  case 'rotate': {\n    keep = true;\n    element = null;\n    currentMode = 'select';\n    const batchCmd = canvas.undoMgr.finishUndoableChange();\n    if (!batchCmd.isEmpty()) {\n      addCommandToHistory(batchCmd);\n    }\n    // perform recalculation to weed out any stray identity transforms that might get stuck\n    recalculateAllSelectedDimensions();\n    call('changed', selectedElements);\n    break;\n  } default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n  * The main (left) mouse button is released (anywhere)\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseUp\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  */\n  const extResult = runExtensions('mouseUp', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseUp} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r) {\n      keep = r.keep || keep;\n      ({element} = r);\n      started = r.started || started;\n    }\n  });\n\n  if (!keep && !isNullish(element)) {\n    getCurrentDrawing().releaseId(getId());\n    element.remove();\n    element = null;\n\n    t = evt.target;\n\n    // if this element is in a group, go up until we reach the top-level group\n    // just below the layer groups\n    // TODO: once we implement links, we also would have to check for <a> elements\n    while (t && t.parentNode && t.parentNode.parentNode && t.parentNode.parentNode.tagName === 'g') {\n      t = t.parentNode;\n    }\n    // if we are not in the middle of creating a path, and we've clicked on some shape,\n    // then go to Select mode.\n    // WebKit returns <div> when the canvas is clicked, Firefox/Opera return <svg>\n    if ((currentMode !== 'path' || !drawnPath) &&\n      t && t.parentNode &&\n      t.parentNode.id !== 'selectorParentGroup' &&\n      t.id !== 'svgcanvas' && t.id !== 'svgroot'\n    ) {\n      // switch into \"select\" mode if we've clicked on an element\n      canvas.setMode('select');\n      selectOnly([t], true);\n    }\n  } else if (!isNullish(element)) {\n    /**\n    * @name module:svgcanvas.SvgCanvas#addedNew\n    * @type {boolean}\n    */\n    canvas.addedNew = true;\n\n    if (useUnit) { convertAttrs(element); }\n\n    let aniDur = 0.2;\n    let cAni;\n    if (opacAni.beginElement && parseFloat(element.getAttribute('opacity')) !== curShape.opacity) {\n      cAni = $(opacAni).clone().attr({\n        to: curShape.opacity,\n        dur: aniDur\n      }).appendTo(element);\n      try {\n        // Fails in FF4 on foreignObject\n        cAni[0].beginElement();\n      } catch (e) {}\n    } else {\n      aniDur = 0;\n    }\n\n    // Ideally this would be done on the endEvent of the animation,\n    // but that doesn't seem to be supported in Webkit\n    setTimeout(function () {\n      if (cAni) { cAni.remove(); }\n      element.setAttribute('opacity', curShape.opacity);\n      element.setAttribute('style', 'pointer-events:inherit');\n      cleanupElement(element);\n      if (currentMode === 'path') {\n        pathActions.toEditMode(element);\n      } else if (curConfig.selectNew) {\n        selectOnly([element], true);\n      }\n      // we create the insert command that is stored on the stack\n      // undo means to call cmd.unapply(), redo means to call cmd.apply()\n      addCommandToHistory(new InsertElementCommand(element));\n\n      call('changed', [element]);\n    }, aniDur * 1000);\n  }\n\n  startTransform = null;\n};\n\nconst dblClick = function (evt) {\n  const evtTarget = evt.target;\n  const parent = evtTarget.parentNode;\n\n  // Do nothing if already in current group\n  if (parent === currentGroup) { return; }\n\n  let mouseTarget = getMouseTarget(evt);\n  const {tagName} = mouseTarget;\n\n  if (tagName === 'text' && currentMode !== 'textedit') {\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n    textActions.select(mouseTarget, pt.x, pt.y);\n  }\n\n  if ((tagName === 'g' || tagName === 'a') &&\n    getRotationAngle(mouseTarget)\n  ) {\n    // TODO: Allow method of in-group editing without having to do\n    // this (similar to editing rotated paths)\n\n    // Ungroup and regroup\n    pushGroupProperties(mouseTarget);\n    mouseTarget = selectedElements[0];\n    clearSelection(true);\n  }\n  // Reset context\n  if (currentGroup) {\n    draw.leaveContext();\n  }\n\n  if ((parent.tagName !== 'g' && parent.tagName !== 'a') ||\n    parent === getCurrentDrawing().getCurrentLayer() ||\n    mouseTarget === selectorManager.selectorParentGroup\n  ) {\n    // Escape from in-group edit\n    return;\n  }\n  draw.setContext(mouseTarget);\n};\n\n// prevent links from being followed in the canvas\nconst handleLinkInCanvas = function (e) {\n  e.preventDefault();\n  return false;\n};\n\n// Added mouseup to the container here.\n// TODO(codedread): Figure out why after the Closure compiler, the window mouseup is ignored.\n$(container).mousedown(mouseDown).mousemove(mouseMove).click(handleLinkInCanvas).dblclick(dblClick).mouseup(mouseUp);\n// $(window).mouseup(mouseUp);\n\n// TODO(rafaelcastrocouto): User preference for shift key and zoom factor\n$(container).bind(\n  'mousewheel DOMMouseScroll',\n  /**\n   * @param {Event} e\n   * @fires module:svgcanvas.SvgCanvas#event:updateCanvas\n   * @fires module:svgcanvas.SvgCanvas#event:zoomDone\n   * @returns {undefined}\n   */\n  function (e) {\n    if (!e.shiftKey) { return; }\n\n    e.preventDefault();\n    const evt = e.originalEvent;\n\n    rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n    const workarea = $('#workarea');\n    const scrbar = 15;\n    const rulerwidth = curConfig.showRulers ? 16 : 0;\n\n    // mouse relative to content area in content pixels\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n\n    // full work area width in screen pixels\n    const editorFullW = workarea.width();\n    const editorFullH = workarea.height();\n\n    // work area width minus scroll and ruler in screen pixels\n    const editorW = editorFullW - scrbar - rulerwidth;\n    const editorH = editorFullH - scrbar - rulerwidth;\n\n    // work area width in content pixels\n    const workareaViewW = editorW * rootSctm.a;\n    const workareaViewH = editorH * rootSctm.d;\n\n    // content offset from canvas in screen pixels\n    const wOffset = workarea.offset();\n    const wOffsetLeft = wOffset.left + rulerwidth;\n    const wOffsetTop = wOffset.top + rulerwidth;\n\n    const delta = (evt.wheelDelta) ? evt.wheelDelta : (evt.detail) ? -evt.detail : 0;\n    if (!delta) { return; }\n\n    let factor = Math.max(3 / 4, Math.min(4 / 3, (delta)));\n\n    let wZoom, hZoom;\n    if (factor > 1) {\n      wZoom = Math.ceil(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.ceil(editorH / workareaViewH * factor * 100) / 100;\n    } else {\n      wZoom = Math.floor(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.floor(editorH / workareaViewH * factor * 100) / 100;\n    }\n    let zoomlevel = Math.min(wZoom, hZoom);\n    zoomlevel = Math.min(10, Math.max(0.01, zoomlevel));\n    if (zoomlevel === currentZoom) {\n      return;\n    }\n    factor = zoomlevel / currentZoom;\n\n    // top left of workarea in content pixels before zoom\n    const topLeftOld = transformPoint(wOffsetLeft, wOffsetTop, rootSctm);\n\n    // top left of workarea in content pixels after zoom\n    const topLeftNew = {\n      x: pt.x - (pt.x - topLeftOld.x) / factor,\n      y: pt.y - (pt.y - topLeftOld.y) / factor\n    };\n\n    // top left of workarea in canvas pixels relative to content after zoom\n    const topLeftNewCanvas = {\n      x: topLeftNew.x * zoomlevel,\n      y: topLeftNew.y * zoomlevel\n    };\n\n    // new center in canvas pixels\n    const newCtr = {\n      x: topLeftNewCanvas.x - rulerwidth + editorFullW / 2,\n      y: topLeftNewCanvas.y - rulerwidth + editorFullH / 2\n    };\n\n    canvas.setZoom(zoomlevel);\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    call('updateCanvas', {center: false, newCtr});\n    call('zoomDone');\n  }\n);\n}());\n\n/**\n* Group: Text edit functions\n* Functions relating to editing text elements\n* @namespace {PlainObject} textActions\n* @memberof module:svgcanvas.SvgCanvas#\n*/\nconst textActions = canvas.textActions = (function () {\nlet curtext;\nlet textinput;\nlet cursor;\nlet selblock;\nlet blinker;\nlet chardata = [];\nlet textbb; // , transbb;\nlet matrix;\nlet lastX, lastY;\nlet allowDbl;\n\n/**\n *\n * @param {Integer} index\n * @returns {undefined}\n */\nfunction setCursor (index) {\n  const empty = (textinput.value === '');\n  $(textinput).focus();\n\n  if (!arguments.length) {\n    if (empty) {\n      index = 0;\n    } else {\n      if (textinput.selectionEnd !== textinput.selectionStart) { return; }\n      index = textinput.selectionEnd;\n    }\n  }\n\n  const charbb = chardata[index];\n  if (!empty) {\n    textinput.setSelectionRange(index, index);\n  }\n  cursor = getElem('text_cursor');\n  if (!cursor) {\n    cursor = document.createElementNS(NS.SVG, 'line');\n    assignAttributes(cursor, {\n      id: 'text_cursor',\n      stroke: '#333',\n      'stroke-width': 1\n    });\n    cursor = getElem('selectorParentGroup').appendChild(cursor);\n  }\n\n  if (!blinker) {\n    blinker = setInterval(function () {\n      const show = (cursor.getAttribute('display') === 'none');\n      cursor.setAttribute('display', show ? 'inline' : 'none');\n    }, 600);\n  }\n\n  const startPt = ptToScreen(charbb.x, textbb.y);\n  const endPt = ptToScreen(charbb.x, (textbb.y + textbb.height));\n\n  assignAttributes(cursor, {\n    x1: startPt.x,\n    y1: startPt.y,\n    x2: endPt.x,\n    y2: endPt.y,\n    visibility: 'visible',\n    display: 'inline'\n  });\n\n  if (selblock) { selblock.setAttribute('d', ''); }\n}\n\n/**\n *\n * @param {Integer} start\n * @param {Integer} end\n * @param {boolean} skipInput\n * @returns {undefined}\n */\nfunction setSelection (start, end, skipInput) {\n  if (start === end) {\n    setCursor(end);\n    return;\n  }\n\n  if (!skipInput) {\n    textinput.setSelectionRange(start, end);\n  }\n\n  selblock = getElem('text_selectblock');\n  if (!selblock) {\n    selblock = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(selblock, {\n      id: 'text_selectblock',\n      fill: 'green',\n      opacity: 0.5,\n      style: 'pointer-events:none'\n    });\n    getElem('selectorParentGroup').append(selblock);\n  }\n\n  const startbb = chardata[start];\n  const endbb = chardata[end];\n\n  cursor.setAttribute('visibility', 'hidden');\n\n  const tl = ptToScreen(startbb.x, textbb.y),\n    tr = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y),\n    bl = ptToScreen(startbb.x, textbb.y + textbb.height),\n    br = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y + textbb.height);\n\n  const dstr = 'M' + tl.x + ',' + tl.y +\n    ' L' + tr.x + ',' + tr.y +\n    ' ' + br.x + ',' + br.y +\n    ' ' + bl.x + ',' + bl.y + 'z';\n\n  assignAttributes(selblock, {\n    d: dstr,\n    display: 'inline'\n  });\n}\n\n/**\n *\n * @param {Float} mouseX\n * @param {Float} mouseY\n * @returns {Integer}\n */\nfunction getIndexFromPoint (mouseX, mouseY) {\n  // Position cursor here\n  const pt = svgroot.createSVGPoint();\n  pt.x = mouseX;\n  pt.y = mouseY;\n\n  // No content, so return 0\n  if (chardata.length === 1) { return 0; }\n  // Determine if cursor should be on left or right of character\n  let charpos = curtext.getCharNumAtPosition(pt);\n  if (charpos < 0) {\n    // Out of text range, look at mouse coords\n    charpos = chardata.length - 2;\n    if (mouseX <= chardata[0].x) {\n      charpos = 0;\n    }\n  } else if (charpos >= chardata.length - 2) {\n    charpos = chardata.length - 2;\n  }\n  const charbb = chardata[charpos];\n  const mid = charbb.x + (charbb.width / 2);\n  if (mouseX > mid) {\n    charpos++;\n  }\n  return charpos;\n}\n\n/**\n *\n * @param {Float} mouseX\n * @param {Float} mouseY\n * @returns {undefined}\n */\nfunction setCursorFromPoint (mouseX, mouseY) {\n  setCursor(getIndexFromPoint(mouseX, mouseY));\n}\n\n/**\n *\n * @param {Float} x\n * @param {Float} y\n * @param {boolean} apply\n * @returns {undefined}\n */\nfunction setEndSelectionFromPoint (x, y, apply) {\n  const i1 = textinput.selectionStart;\n  const i2 = getIndexFromPoint(x, y);\n\n  const start = Math.min(i1, i2);\n  const end = Math.max(i1, i2);\n  setSelection(start, end, !apply);\n}\n\n/**\n *\n * @param {Float} xIn\n * @param {Float} yIn\n * @returns {module:math.XYObject}\n */\nfunction screenToPt (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix.inverse());\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  return out;\n}\n\n/**\n *\n * @param {Float} xIn\n * @param {Float} yIn\n * @returns {module:math.XYObject}\n */\nfunction ptToScreen (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n}\n\n/*\n// Not currently in use\nfunction hideCursor () {\n  if (cursor) {\n    cursor.setAttribute('visibility', 'hidden');\n  }\n}\n*/\n\n/**\n *\n * @param {Event} evt\n * @returns {undefined}\n */\nfunction selectAll (evt) {\n  setSelection(0, curtext.textContent.length);\n  $(this).unbind(evt);\n}\n\n/**\n *\n * @param {Event} evt\n * @returns {undefined}\n */\nfunction selectWord (evt) {\n  if (!allowDbl || !curtext) { return; }\n\n  const ept = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = ept.x * currentZoom,\n    mouseY = ept.y * currentZoom;\n  const pt = screenToPt(mouseX, mouseY);\n\n  const index = getIndexFromPoint(pt.x, pt.y);\n  const str = curtext.textContent;\n  const first = str.substr(0, index).replace(/[a-z0-9]+$/i, '').length;\n  const m = str.substr(index).match(/^[a-z0-9]+/i);\n  const last = (m ? m[0].length : 0) + index;\n  setSelection(first, last);\n\n  // Set tripleclick\n  $(evt.target).click(selectAll);\n  setTimeout(function () {\n    $(evt.target).unbind('click', selectAll);\n  }, 300);\n}\n\nreturn /** @lends module:svgcanvas.SvgCanvas#textActions */ {\n  /**\n  * @param {Element} target\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  select (target, x, y) {\n    curtext = target;\n    textActions.toEditMode(x, y);\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  start (elem) {\n    curtext = elem;\n    textActions.toEditMode();\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Element} mouseTarget\n  * @param {Float} startX\n  * @param {Float} startY\n  * @returns {undefined}\n  */\n  mouseDown (evt, mouseTarget, startX, startY) {\n    const pt = screenToPt(startX, startY);\n\n    textinput.focus();\n    setCursorFromPoint(pt.x, pt.y);\n    lastX = startX;\n    lastY = startY;\n\n    // TODO: Find way to block native selection\n  },\n  /**\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseMove (mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n    setEndSelectionFromPoint(pt.x, pt.y);\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseUp (evt, mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n\n    setEndSelectionFromPoint(pt.x, pt.y, true);\n\n    // TODO: Find a way to make this work: Use transformed BBox instead of evt.target\n    // if (lastX === mouseX && lastY === mouseY\n    //   && !rectsIntersect(transbb, {x: pt.x, y: pt.y, width: 0, height: 0})) {\n    //   textActions.toSelectMode(true);\n    // }\n\n    if (\n      evt.target !== curtext &&\n      mouseX < lastX + 2 &&\n      mouseX > lastX - 2 &&\n      mouseY < lastY + 2 &&\n      mouseY > lastY - 2\n    ) {\n      textActions.toSelectMode(true);\n    }\n  },\n  /**\n  * @function\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  setCursor,\n  /**\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  toEditMode (x, y) {\n    allowDbl = false;\n    currentMode = 'textedit';\n    selectorManager.requestSelector(curtext).showGrips(false);\n    // Make selector group accept clicks\n    /* const selector = */ selectorManager.requestSelector(curtext); // Do we need this? Has side effect of setting lock, so keeping for now, but next line wasn't being used\n    // const sel = selector.selectorRect;\n\n    textActions.init();\n\n    $(curtext).css('cursor', 'text');\n\n    // if (supportsEditableText()) {\n    //   curtext.setAttribute('editable', 'simple');\n    //   return;\n    // }\n\n    if (!arguments.length) {\n      setCursor();\n    } else {\n      const pt = screenToPt(x, y);\n      setCursorFromPoint(pt.x, pt.y);\n    }\n\n    setTimeout(function () {\n      allowDbl = true;\n    }, 300);\n  },\n  /**\n  * @param {boolean|Element} selectElem\n  * @fires module:svgcanvas.SvgCanvas#event:selected\n  * @returns {undefined}\n  */\n  toSelectMode (selectElem) {\n    currentMode = 'select';\n    clearInterval(blinker);\n    blinker = null;\n    if (selblock) { $(selblock).attr('display', 'none'); }\n    if (cursor) { $(cursor).attr('visibility', 'hidden'); }\n    $(curtext).css('cursor', 'move');\n\n    if (selectElem) {\n      clearSelection();\n      $(curtext).css('cursor', 'move');\n\n      call('selected', [curtext]);\n      addToSelection([curtext], true);\n    }\n    if (curtext && !curtext.textContent.length) {\n      // No content, so delete\n      canvas.deleteSelectedElements();\n    }\n\n    $(textinput).blur();\n\n    curtext = false;\n\n    // if (supportsEditableText()) {\n    //   curtext.removeAttribute('editable');\n    // }\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  setInputElem (elem) {\n    textinput = elem;\n    // $(textinput).blur(hideCursor);\n  },\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    if (currentMode === 'textedit') {\n      textActions.toSelectMode();\n    }\n  },\n  /**\n  * @param {Element} inputElem Not in use\n  * @returns {undefined}\n  */\n  init (inputElem) {\n    if (!curtext) { return; }\n    let i, end;\n    // if (supportsEditableText()) {\n    //   curtext.select();\n    //   return;\n    // }\n\n    if (!curtext.parentNode) {\n      // Result of the ffClone, need to get correct element\n      curtext = selectedElements[0];\n      selectorManager.requestSelector(curtext).showGrips(false);\n    }\n\n    const str = curtext.textContent;\n    const len = str.length;\n\n    const xform = curtext.getAttribute('transform');\n\n    textbb = utilsGetBBox(curtext);\n\n    matrix = xform ? getMatrix(curtext) : null;\n\n    chardata = [];\n    chardata.length = len;\n    textinput.focus();\n\n    $(curtext).unbind('dblclick', selectWord).dblclick(selectWord);\n\n    if (!len) {\n      end = {x: textbb.x + (textbb.width / 2), width: 0};\n    }\n\n    for (i = 0; i < len; i++) {\n      const start = curtext.getStartPositionOfChar(i);\n      end = curtext.getEndPositionOfChar(i);\n\n      if (!supportsGoodTextCharPos()) {\n        const offset = canvas.contentW * currentZoom;\n        start.x -= offset;\n        end.x -= offset;\n\n        start.x /= currentZoom;\n        end.x /= currentZoom;\n      }\n\n      // Get a \"bbox\" equivalent for each character. Uses the\n      // bbox data of the actual text for y, height purposes\n\n      // TODO: Decide if y, width and height are actually necessary\n      chardata[i] = {\n        x: start.x,\n        y: textbb.y, // start.y?\n        width: end.x - start.x,\n        height: textbb.height\n      };\n    }\n\n    // Add a last bbox for cursor at end of text\n    chardata.push({\n      x: end.x,\n      width: 0\n    });\n    setSelection(textinput.selectionStart, textinput.selectionEnd, true);\n  }\n};\n}());\n\n/**\n* Group: Serialization\n*/\n\n/**\n* Looks at DOM elements inside the `<defs>` to see if they are referred to,\n* removes them from the DOM if they are not.\n* @function module:svgcanvas.SvgCanvas#removeUnusedDefElems\n* @returns {Integer} The number of elements that were removed\n*/\nconst removeUnusedDefElems = this.removeUnusedDefElems = function () {\n  const defs = svgcontent.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (!defs || !defs.length) { return 0; }\n\n  // if (!defs.firstChild) { return; }\n\n  const defelemUses = [];\n  let numRemoved = 0;\n  const attrs = ['fill', 'stroke', 'filter', 'marker-start', 'marker-mid', 'marker-end'];\n  const alen = attrs.length;\n\n  const allEls = svgcontent.getElementsByTagNameNS(NS.SVG, '*');\n  const allLen = allEls.length;\n\n  let i, j;\n  for (i = 0; i < allLen; i++) {\n    const el = allEls[i];\n    for (j = 0; j < alen; j++) {\n      const ref = getUrlFromAttr(el.getAttribute(attrs[j]));\n      if (ref) {\n        defelemUses.push(ref.substr(1));\n      }\n    }\n\n    // gradients can refer to other gradients\n    const href = getHref(el);\n    if (href && href.startsWith('#')) {\n      defelemUses.push(href.substr(1));\n    }\n  }\n\n  const defelems = $(defs).find('linearGradient, radialGradient, filter, marker, svg, symbol');\n  i = defelems.length;\n  while (i--) {\n    const defelem = defelems[i];\n    const {id} = defelem;\n    if (!defelemUses.includes(id)) {\n      // Not found, so remove (but remember)\n      removedElements[id] = defelem;\n      defelem.remove();\n      numRemoved++;\n    }\n  }\n\n  return numRemoved;\n};\n\n/**\n* Main function to set up the SVG content for output.\n* @function module:svgcanvas.SvgCanvas#svgCanvasToString\n* @returns {string} The SVG image for output\n*/\nthis.svgCanvasToString = function () {\n  // keep calling it until there are none to remove\n  while (removeUnusedDefElems() > 0) {} // eslint-disable-line no-empty\n\n  pathActions.clear(true);\n\n  // Keep SVG-Edit comment on top\n  $.each(svgcontent.childNodes, function (i, node) {\n    if (i && node.nodeType === 8 && node.data.includes('Created with')) {\n      svgcontent.firstChild.before(node);\n    }\n  });\n\n  // Move out of in-group editing mode\n  if (currentGroup) {\n    draw.leaveContext();\n    selectOnly([currentGroup]);\n  }\n\n  const nakedSvgs = [];\n\n  // Unwrap gsvg if it has no special attributes (only id and style)\n  $(svgcontent).find('g:data(gsvg)').each(function () {\n    const attrs = this.attributes;\n    let len = attrs.length;\n    for (let i = 0; i < len; i++) {\n      if (attrs[i].nodeName === 'id' || attrs[i].nodeName === 'style') {\n        len--;\n      }\n    }\n    // No significant attributes, so ungroup\n    if (len <= 0) {\n      const svg = this.firstChild;\n      nakedSvgs.push(svg);\n      $(this).replaceWith(svg);\n    }\n  });\n  const output = this.svgToString(svgcontent, 0);\n\n  // Rewrap gsvg\n  if (nakedSvgs.length) {\n    $(nakedSvgs).each(function () {\n      groupSvgElem(this);\n    });\n  }\n\n  return output;\n};\n\n/**\n* Sub function ran on each SVG element to convert it to a string as desired.\n* @function module:svgcanvas.SvgCanvas#svgToString\n* @param {Element} elem - The SVG element to convert\n* @param {Integer} indent - Number of spaces to indent this tag\n* @returns {string} The given element as an SVG tag\n*/\nthis.svgToString = function (elem, indent) {\n  const out = [];\n  const unit = curConfig.baseUnit;\n  const unitRe = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n\n  if (elem) {\n    cleanupElement(elem);\n    const attrs = Array.from(elem.attributes);\n    const childs = elem.childNodes;\n    attrs.sort((a, b) => {\n      return a.name > b.name ? -1 : 1;\n    });\n\n    for (let i = 0; i < indent; i++) { out.push(' '); }\n    out.push('<'); out.push(elem.nodeName);\n    if (elem.id === 'svgcontent') {\n      // Process root element separately\n      const res = getResolution();\n\n      const vb = '';\n      // TODO: Allow this by dividing all values by current baseVal\n      // Note that this also means we should properly deal with this on import\n      // if (curConfig.baseUnit !== 'px') {\n      //   const unit = curConfig.baseUnit;\n      //   const unitM = getTypeMap()[unit];\n      //   res.w = shortFloat(res.w / unitM);\n      //   res.h = shortFloat(res.h / unitM);\n      //   vb = ' viewBox=\"' + [0, 0, res.w, res.h].join(' ') + '\"';\n      //   res.w += unit;\n      //   res.h += unit;\n      // }\n\n      if (unit !== 'px') {\n        res.w = convertUnit(res.w, unit) + unit;\n        res.h = convertUnit(res.h, unit) + unit;\n      }\n\n      out.push(' width=\"' + res.w + '\" height=\"' + res.h + '\"' + vb + ' xmlns=\"' + NS.SVG + '\"');\n\n      const nsuris = {};\n\n      // Check elements for namespaces, add if found\n      $(elem).find('*').andSelf().each(function () {\n        // const el = this;\n        // for some elements have no attribute\n        const uri = this.namespaceURI;\n        if (uri && !nsuris[uri] && nsMap[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {\n          nsuris[uri] = true;\n          out.push(' xmlns:' + nsMap[uri] + '=\"' + uri + '\"');\n        }\n\n        $.each(this.attributes, function (i, attr) {\n          const u = attr.namespaceURI;\n          if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {\n            nsuris[u] = true;\n            out.push(' xmlns:' + nsMap[u] + '=\"' + u + '\"');\n          }\n        });\n      });\n\n      let i = attrs.length;\n      const attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];\n      while (i--) {\n        const attr = attrs[i];\n        const attrVal = toXml(attr.value);\n\n        // Namespaces have already been dealt with, so skip\n        if (attr.nodeName.startsWith('xmlns:')) { continue; }\n\n        // only serialize attributes we don't use internally\n        if (attrVal !== '' && !attrNames.includes(attr.localName)) {\n          if (!attr.namespaceURI || nsMap[attr.namespaceURI]) {\n            out.push(' ');\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    } else {\n      // Skip empty defs\n      if (elem.nodeName === 'defs' && !elem.firstChild) { return ''; }\n\n      const mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];\n      for (let i = attrs.length - 1; i >= 0; i--) {\n        const attr = attrs[i];\n        let attrVal = toXml(attr.value);\n        // remove bogus attributes added by Gecko\n        if (mozAttrs.includes(attr.localName)) { continue; }\n        if (attrVal !== '') {\n          if (attrVal.startsWith('pointer-events')) { continue; }\n          if (attr.localName === 'class' && attrVal.startsWith('se_')) { continue; }\n          out.push(' ');\n          if (attr.localName === 'd') { attrVal = pathActions.convertPath(elem, true); }\n          if (!isNaN(attrVal)) {\n            attrVal = shortFloat(attrVal);\n          } else if (unitRe.test(attrVal)) {\n            attrVal = shortFloat(attrVal) + unit;\n          }\n\n          // Embed images when saving\n          if (saveOptions.apply &&\n            elem.nodeName === 'image' &&\n            attr.localName === 'href' &&\n            saveOptions.images &&\n            saveOptions.images === 'embed'\n          ) {\n            const img = encodableImages[attrVal];\n            if (img) { attrVal = img; }\n          }\n\n          // map various namespaces to our fixed namespace prefixes\n          // (the default xmlns attribute itself does not get a prefix)\n          if (!attr.namespaceURI || attr.namespaceURI === NS.SVG || nsMap[attr.namespaceURI]) {\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    }\n\n    if (elem.hasChildNodes()) {\n      out.push('>');\n      indent++;\n      let bOneLine = false;\n\n      for (let i = 0; i < childs.length; i++) {\n        const child = childs.item(i);\n        switch (child.nodeType) {\n        case 1: // element node\n          out.push('\\n');\n          out.push(this.svgToString(childs.item(i), indent));\n          break;\n        case 3: { // text node\n          const str = child.nodeValue.replace(/^\\s+|\\s+$/g, '');\n          if (str !== '') {\n            bOneLine = true;\n            out.push(String(toXml(str)));\n          }\n          break;\n        } case 4: // cdata node\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<![CDATA[');\n          out.push(child.nodeValue);\n          out.push(']]>');\n          break;\n        case 8: // comment\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<!--');\n          out.push(child.data);\n          out.push('-->');\n          break;\n        } // switch on node type\n      }\n      indent--;\n      if (!bOneLine) {\n        out.push('\\n');\n        for (let i = 0; i < indent; i++) { out.push(' '); }\n      }\n      out.push('</'); out.push(elem.nodeName); out.push('>');\n    } else {\n      out.push('/>');\n    }\n  }\n  return out.join('');\n}; // end svgToString()\n\n/**\n * Function to run when image data is found\n * @callback module:svgcanvas.ImageEmbeddedCallback\n * @param {string|false} result Data URL\n * @returns {undefined}\n */\n/**\n* Converts a given image file to a data URL when possible, then runs a given callback.\n* @function module:svgcanvas.SvgCanvas#embedImage\n* @param {string} src - The path/URL of the image\n* @returns {Promise} Resolves to Data URL (string|false)\n*/\nthis.embedImage = function (src) {\n  // Todo: Remove this Promise in favor of making an async/await `Image.load` utility\n  return new Promise(function (resolve, reject) { // eslint-disable-line promise/avoid-new\n    // load in the image and once it's loaded, get the dimensions\n    $(new Image()).load(function (response, status, xhr) {\n      if (status === 'error') {\n        reject(new Error('Error loading image: ' + xhr.status + ' ' + xhr.statusText));\n        return;\n      }\n      // create a canvas the same size as the raster image\n      const cvs = document.createElement('canvas');\n      cvs.width = this.width;\n      cvs.height = this.height;\n      // load the raster image into the canvas\n      cvs.getContext('2d').drawImage(this, 0, 0);\n      // retrieve the data: URL\n      try {\n        let urldata = ';svgedit_url=' + encodeURIComponent(src);\n        urldata = cvs.toDataURL().replace(';base64', urldata + ';base64');\n        encodableImages[src] = urldata;\n      } catch (e) {\n        encodableImages[src] = false;\n      }\n      lastGoodImgUrl = src;\n      resolve(encodableImages[src]);\n    }).attr('src', src);\n  });\n};\n\n/**\n* Sets a given URL to be a \"last good image\" URL.\n* @function module:svgcanvas.SvgCanvas#setGoodImage\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setGoodImage = function (val) {\n  lastGoodImgUrl = val;\n};\n\n/**\n* Does nothing by default, handled by optional widget/extension.\n* @function module:svgcanvas.SvgCanvas#open\n* @returns {undefined}\n*/\nthis.open = function () {\n  /* */\n};\n\n/**\n* Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.\n* This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save\n* function to the 'saved' event.\n* @function module:svgcanvas.SvgCanvas#save\n* @param {module:svgcanvas.SaveOptions} opts\n* @fires module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\nthis.save = function (opts) {\n  // remove the selected outline before serializing\n  clearSelection();\n  // Update save options if provided\n  if (opts) { $.extend(saveOptions, opts); }\n  saveOptions.apply = true;\n\n  // no need for doctype, see https://jwatt.org/svg/authoring/#doctype-declaration\n  const str = this.svgCanvasToString();\n  call('saved', str);\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.IssuesAndCodes\n* @property {string[]} issueCodes The locale-independent code names\n* @property {string[]} issues The localized descriptions\n*/\n\n/**\n* Codes only is useful for locale-independent detection.\n* @returns {module:svgcanvas.IssuesAndCodes}\n*/\nfunction getIssues () {\n  // remove the selected outline before serializing\n  clearSelection();\n\n  // Check for known CanVG issues\n  const issues = [];\n  const issueCodes = [];\n\n  // Selector and notice\n  const issueList = {\n    feGaussianBlur: uiStrings.exportNoBlur,\n    foreignObject: uiStrings.exportNoforeignObject,\n    '[stroke-dasharray]': uiStrings.exportNoDashArray\n  };\n  const content = $(svgcontent);\n\n  // Add font/text check if Canvas Text API is not implemented\n  if (!('font' in $('<canvas>')[0].getContext('2d'))) {\n    issueList.text = uiStrings.exportNoText;\n  }\n\n  $.each(issueList, function (sel, descr) {\n    if (content.find(sel).length) {\n      issueCodes.push(sel);\n      issues.push(descr);\n    }\n  });\n  return {issues, issueCodes};\n}\n\nlet canvg;\n/**\n* @typedef {\"feGaussianBlur\"|\"foreignObject\"|\"[stroke-dasharray]\"|\"text\"} module:svgcanvas.IssueCode\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ImageExportedResults\n* @property {string} datauri Contents as a Data URL\n* @property {string} bloburl May be the empty string\n* @property {string} svg The SVG contents as a string\n* @property {string[]} issues The localization messages of `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes CanVG issues found with the SVG\n* @property {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} type The chosen image type\n* @property {\"image/png\"|\"image/jpeg\"|\"image/bmp\"|\"image/webp\"} mimeType The image MIME type\n* @property {Float} quality A decimal between 0 and 1 (for use with JPEG or WEBP)\n* @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added\n*/\n\n/**\n* Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,\n* then calls \"exported\" with an object including the string, image\n* information, and any issues found.\n* @function module:svgcanvas.SvgCanvas#rasterExport\n* @param {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} [imgType=\"PNG\"]\n* @param {Float} [quality] Between 0 and 1\n* @param {string} [exportWindowName]\n* @param {PlainObject} [opts]\n* @param {boolean} [opts.avoidEvent]\n* @fires module:svgcanvas.SvgCanvas#event:exported\n* @todo Confirm/fix ICO type\n* @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}\n*/\nthis.rasterExport = async function (imgType, quality, exportWindowName, opts = {}) {\n  const type = imgType === 'ICO' ? 'BMP' : (imgType || 'PNG');\n  const mimeType = 'image/' + type.toLowerCase();\n  const {issues, issueCodes} = getIssues();\n  const svg = this.svgCanvasToString();\n\n  if (!canvg) {\n    ({canvg} = await importSetGlobal(curConfig.canvgPath + 'canvg.js', {\n      global: 'canvg'\n    }));\n  }\n  if (!$('#export_canvas').length) {\n    $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');\n  }\n  const c = $('#export_canvas')[0];\n  c.width = canvas.contentW;\n  c.height = canvas.contentH;\n\n  await canvg(c, svg);\n  // Todo: Make async/await utility in place of `toBlob`, so we can remove this constructor\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const dataURLType = type.toLowerCase();\n    const datauri = quality\n      ? c.toDataURL('image/' + dataURLType, quality)\n      : c.toDataURL('image/' + dataURLType);\n    let bloburl;\n    /**\n     * Called when `bloburl` is available for export.\n     * @returns {undefined}\n     */\n    function done () {\n      const obj = {\n        datauri, bloburl, svg, issues, issueCodes, type: imgType,\n        mimeType, quality, exportWindowName\n      };\n      if (!opts.avoidEvent) {\n        call('exported', obj);\n      }\n      resolve(obj);\n    }\n    if (c.toBlob) {\n      c.toBlob((blob) => {\n        bloburl = createObjectURL(blob);\n        done();\n      }, mimeType, quality);\n      return;\n    }\n    bloburl = dataURLToObjectURL(datauri);\n    done();\n  });\n};\n/**\n * @external jsPDF\n */\n/**\n * @typedef {undefined|\"save\"|\"arraybuffer\"|\"blob\"|\"datauristring\"|\"dataurlstring\"|\"dataurlnewwindow\"|\"datauri\"|\"dataurl\"} external:jsPDF.OutputType\n * @todo Newer version to add also allows these `outputType` values \"bloburi\"|\"bloburl\" which return strings, so document here and for `outputType` of `module:svgcanvas.PDFExportedResults` below if added\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.PDFExportedResults\n* @property {string} svg The SVG PDF output\n* @property {string|ArrayBuffer|Blob|window} output The output based on the `outputType`;\n* if `undefined`, \"datauristring\", \"dataurlstring\", \"datauri\",\n* or \"dataurl\", will be a string (`undefined` gives a document, while the others\n* build as Data URLs; \"datauri\" and \"dataurl\" change the location of the current page); if\n* \"arraybuffer\", will return `ArrayBuffer`; if \"blob\", returns a `Blob`;\n* if \"dataurlnewwindow\", will change the current page's location and return a string\n* if in Safari and no window object is found; otherwise opens in, and returns, a new `window`\n* object; if \"save\", will have the same return as \"dataurlnewwindow\" if\n* `navigator.getUserMedia` support is found without `URL.createObjectURL` support; otherwise\n* returns `undefined` but attempts to save\n* @property {external:jsPDF.OutputType} outputType\n* @property {string[]} issues The human-readable localization messages of corresponding `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes\n* @property {string} exportWindowName\n*/\n\n/**\n* Generates a PDF based on the current image, then calls \"exportedPDF\" with\n* an object including the string, the data URL, and any issues found.\n* @function module:svgcanvas.SvgCanvas#exportPDF\n* @param {string} [exportWindowName] Will also be used for the download file name here\n* @param {external:jsPDF.OutputType} [outputType=\"dataurlstring\"]\n* @fires module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}\n*/\nthis.exportPDF = async function (\n  exportWindowName,\n  outputType = isChrome() ? 'save' : undefined\n) {\n  if (!window.jsPDF) {\n    // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n    await importScript([\n      // We do not currently have these paths configurable as they are\n      //   currently global-only, so not Rolled-up\n      'jspdf/underscore-min.js',\n      'jspdf/jspdf.min.js'\n    ]);\n\n    const modularVersion = !('svgEditor' in window) ||\n      !window.svgEditor ||\n      window.svgEditor.modules !== false;\n    // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n    await importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {\n      type: modularVersion\n        ? 'module'\n        : 'text/javascript'\n    });\n    // await importModule('jspdf/jspdf.plugin.svgToPdf.js');\n  }\n\n  const res = getResolution();\n  const orientation = res.w > res.h ? 'landscape' : 'portrait';\n  const unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes\n\n  // Todo: Give options to use predefined jsPDF formats like \"a4\", etc. from pull-down (with option to keep customizable)\n  const doc = jsPDF({\n    orientation,\n    unit,\n    format: [res.w, res.h]\n    // , compressPdf: true\n  });\n  const docTitle = getDocumentTitle();\n  doc.setProperties({\n    title: docTitle /* ,\n    subject: '',\n    author: '',\n    keywords: '',\n    creator: '' */\n  });\n  const {issues, issueCodes} = getIssues();\n  const svg = this.svgCanvasToString();\n  doc.addSVG(svg, 0, 0);\n\n  // doc.output('save'); // Works to open in a new\n  //  window; todo: configure this and other export\n  //  options to optionally work in this manner as\n  //  opposed to opening a new tab\n  outputType = outputType || 'dataurlstring';\n  const obj = {svg, issues, issueCodes, exportWindowName, outputType};\n  obj.output = doc.output(outputType, outputType === 'save' ? (exportWindowName || 'svg.pdf') : undefined);\n  call('exportedPDF', obj);\n  return obj;\n};\n\n/**\n* Returns the current drawing as raw SVG XML text.\n* @function module:svgcanvas.SvgCanvas#getSvgString\n* @returns {string} The current drawing as raw SVG XML text.\n*/\nthis.getSvgString = function () {\n  saveOptions.apply = false;\n  return this.svgCanvasToString();\n};\n\n/**\n* This function determines whether to use a nonce in the prefix, when\n* generating IDs for future documents in SVG-Edit.\n* If you're controlling SVG-Edit externally, and want randomized IDs, call\n* this BEFORE calling `svgCanvas.setSvgString`.\n* @function module:svgcanvas.SvgCanvas#randomizeIds\n* @param {boolean} [enableRandomization] If true, adds a nonce to the prefix. Thus\n* `svgCanvas.randomizeIds() <==> svgCanvas.randomizeIds(true)`\n* @returns {undefined}\n*/\nthis.randomizeIds = function (enableRandomization) {\n  if (arguments.length > 0 && enableRandomization === false) {\n    draw.randomizeIds(false, getCurrentDrawing());\n  } else {\n    draw.randomizeIds(true, getCurrentDrawing());\n  }\n};\n\n/**\n* Ensure each element has a unique ID.\n* @function module:svgcanvas.SvgCanvas#uniquifyElems\n* @param {Element} g - The parent element of the tree to give unique IDs\n* @returns {undefined}\n*/\nconst uniquifyElems = this.uniquifyElems = function (g) {\n  const ids = {};\n  // TODO: Handle markers and connectors. These are not yet re-identified properly\n  // as their referring elements do not get remapped.\n  //\n  // <marker id='se_marker_end_svg_7'/>\n  // <polyline id='svg_7' se:connector='svg_1 svg_6' marker-end='url(#se_marker_end_svg_7)'/>\n  //\n  // Problem #1: if svg_1 gets renamed, we do not update the polyline's se:connector attribute\n  // Problem #2: if the polyline svg_7 gets renamed, we do not update the marker id nor the polyline's marker-end attribute\n  const refElems = ['filter', 'linearGradient', 'pattern', 'radialGradient', 'symbol', 'textPath', 'use'];\n\n  walkTree(g, function (n) {\n    // if it's an element node\n    if (n.nodeType === 1) {\n      // and the element has an ID\n      if (n.id) {\n        // and we haven't tracked this ID yet\n        if (!(n.id in ids)) {\n          // add this id to our map\n          ids[n.id] = {elem: null, attrs: [], hrefs: []};\n        }\n        ids[n.id].elem = n;\n      }\n\n      // now search for all attributes on this element that might refer\n      // to other elements\n      $.each(refAttrs, function (i, attr) {\n        const attrnode = n.getAttributeNode(attr);\n        if (attrnode) {\n          // the incoming file has been sanitized, so we should be able to safely just strip off the leading #\n          const url = getUrlFromAttr(attrnode.value),\n            refid = url ? url.substr(1) : null;\n          if (refid) {\n            if (!(refid in ids)) {\n              // add this id to our map\n              ids[refid] = {elem: null, attrs: [], hrefs: []};\n            }\n            ids[refid].attrs.push(attrnode);\n          }\n        }\n      });\n\n      // check xlink:href now\n      const href = getHref(n);\n      // TODO: what if an <image> or <a> element refers to an element internally?\n      if (href && refElems.includes(n.nodeName)) {\n        const refid = href.substr(1);\n        if (refid) {\n          if (!(refid in ids)) {\n            // add this id to our map\n            ids[refid] = {elem: null, attrs: [], hrefs: []};\n          }\n          ids[refid].hrefs.push(n);\n        }\n      }\n    }\n  });\n\n  // in ids, we now have a map of ids, elements and attributes, let's re-identify\n  for (const oldid in ids) {\n    if (!oldid) { continue; }\n    const {elem} = ids[oldid];\n    if (elem) {\n      const newid = getNextId();\n\n      // assign element its new id\n      elem.id = newid;\n\n      // remap all url() attributes\n      const {attrs} = ids[oldid];\n      let j = attrs.length;\n      while (j--) {\n        const attr = attrs[j];\n        attr.ownerElement.setAttribute(attr.name, 'url(#' + newid + ')');\n      }\n\n      // remap all href attributes\n      const hreffers = ids[oldid].hrefs;\n      let k = hreffers.length;\n      while (k--) {\n        const hreffer = hreffers[k];\n        setHref(hreffer, '#' + newid);\n      }\n    }\n  }\n};\n\n/**\n* Assigns reference data for each use element.\n* @function module:svgcanvas.SvgCanvas#setUseData\n* @param {Element} parent\n* @returns {undefined}\n*/\nconst setUseData = this.setUseData = function (parent) {\n  let elems = $(parent);\n\n  if (parent.tagName !== 'use') {\n    elems = elems.find('use');\n  }\n\n  elems.each(function () {\n    const id = getHref(this).substr(1);\n    const refElem = getElem(id);\n    if (!refElem) { return; }\n    $(this).data('ref', refElem);\n    if (refElem.tagName === 'symbol' || refElem.tagName === 'svg') {\n      $(this).data('symbol', refElem).data('ref', refElem);\n    }\n  });\n};\n\n/**\n* Converts gradients from userSpaceOnUse to objectBoundingBox.\n* @function module:svgcanvas.SvgCanvas#convertGradients\n* @param {Element} elem\n* @returns {undefined}\n*/\nconst convertGradients = this.convertGradients = function (elem) {\n  let elems = $(elem).find('linearGradient, radialGradient');\n  if (!elems.length && isWebkit()) {\n    // Bug in webkit prevents regular *Gradient selector search\n    elems = $(elem).find('*').filter(function () {\n      return (this.tagName.includes('Gradient'));\n    });\n  }\n\n  elems.each(function () {\n    const grad = this; // eslint-disable-line consistent-this\n    if ($(grad).attr('gradientUnits') === 'userSpaceOnUse') {\n      // TODO: Support more than one element with this ref by duplicating parent grad\n      const fillStrokeElems = $(svgcontent).find('[fill=\"url(#' + grad.id + ')\"],[stroke=\"url(#' + grad.id + ')\"]');\n      if (!fillStrokeElems.length) { return; }\n\n      // get object's bounding box\n      const bb = utilsGetBBox(fillStrokeElems[0]);\n\n      // This will occur if the element is inside a <defs> or a <symbol>,\n      // in which we shouldn't need to convert anyway.\n      if (!bb) { return; }\n\n      if (grad.tagName === 'linearGradient') {\n        const gCoords = $(grad).attr(['x1', 'y1', 'x2', 'y2']);\n\n        // If has transform, convert\n        const tlist = grad.gradientTransform.baseVal;\n        if (tlist && tlist.numberOfItems > 0) {\n          const m = transformListToTransform(tlist).matrix;\n          const pt1 = transformPoint(gCoords.x1, gCoords.y1, m);\n          const pt2 = transformPoint(gCoords.x2, gCoords.y2, m);\n\n          gCoords.x1 = pt1.x;\n          gCoords.y1 = pt1.y;\n          gCoords.x2 = pt2.x;\n          gCoords.y2 = pt2.y;\n          grad.removeAttribute('gradientTransform');\n        }\n\n        $(grad).attr({\n          x1: (gCoords.x1 - bb.x) / bb.width,\n          y1: (gCoords.y1 - bb.y) / bb.height,\n          x2: (gCoords.x2 - bb.x) / bb.width,\n          y2: (gCoords.y2 - bb.y) / bb.height\n        });\n        grad.removeAttribute('gradientUnits');\n      }\n      // else {\n      //   Note: radialGradient elements cannot be easily converted\n      //   because userSpaceOnUse will keep circular gradients, while\n      //   objectBoundingBox will x/y scale the gradient according to\n      //   its bbox.\n      //\n      //   For now we'll do nothing, though we should probably have\n      //   the gradient be updated as the element is moved, as\n      //   inkscape/illustrator do.\n      //\n      //   const gCoords = $(grad).attr(['cx', 'cy', 'r']);\n      //\n      //   $(grad).attr({\n      //     cx: (gCoords.cx - bb.x) / bb.width,\n      //     cy: (gCoords.cy - bb.y) / bb.height,\n      //     r: gCoords.r\n      //   });\n      //\n      //   grad.removeAttribute('gradientUnits');\n      // }\n    }\n  });\n};\n\n/**\n* Converts selected/given `<use>` or child SVG element to a group.\n* @function module:svgcanvas.SvgCanvas#convertToGroup\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nconst convertToGroup = this.convertToGroup = function (elem) {\n  if (!elem) {\n    elem = selectedElements[0];\n  }\n  const $elem = $(elem);\n  const batchCmd = new BatchCommand();\n  let ts;\n\n  if ($elem.data('gsvg')) {\n    // Use the gsvg as the new group\n    const svg = elem.firstChild;\n    const pt = $(svg).attr(['x', 'y']);\n\n    $(elem.firstChild.firstChild).unwrap();\n    $(elem).removeData('gsvg');\n\n    const tlist = getTransformList(elem);\n    const xform = svgroot.createSVGTransform();\n    xform.setTranslate(pt.x, pt.y);\n    tlist.appendItem(xform);\n    recalculateDimensions(elem);\n    call('selected', [elem]);\n  } else if ($elem.data('symbol')) {\n    elem = $elem.data('symbol');\n\n    ts = $elem.attr('transform');\n    const pos = $elem.attr(['x', 'y']);\n\n    const vb = elem.getAttribute('viewBox');\n\n    if (vb) {\n      const nums = vb.split(' ');\n      pos.x -= Number(nums[0]);\n      pos.y -= Number(nums[1]);\n    }\n\n    // Not ideal, but works\n    ts += ' translate(' + (pos.x || 0) + ',' + (pos.y || 0) + ')';\n\n    const prev = $elem.prev();\n\n    // Remove <use> element\n    batchCmd.addSubCommand(new RemoveElementCommand($elem[0], $elem[0].nextSibling, $elem[0].parentNode));\n    $elem.remove();\n\n    // See if other elements reference this symbol\n    const hasMore = $(svgcontent).find('use:data(symbol)').length;\n\n    const g = svgdoc.createElementNS(NS.SVG, 'g');\n    const childs = elem.childNodes;\n\n    let i;\n    for (i = 0; i < childs.length; i++) {\n      g.append(childs[i].cloneNode(true));\n    }\n\n    // Duplicate the gradients for Gecko, since they weren't included in the <symbol>\n    if (isGecko()) {\n      const dupeGrads = $(findDefs()).children('linearGradient,radialGradient,pattern').clone();\n      $(g).append(dupeGrads);\n    }\n\n    if (ts) {\n      g.setAttribute('transform', ts);\n    }\n\n    const parent = elem.parentNode;\n\n    uniquifyElems(g);\n\n    // Put the dupe gradients back into <defs> (after uniquifying them)\n    if (isGecko()) {\n      $(findDefs()).append($(g).find('linearGradient,radialGradient,pattern'));\n    }\n\n    // now give the g itself a new id\n    g.id = getNextId();\n\n    prev.after(g);\n\n    if (parent) {\n      if (!hasMore) {\n        // remove symbol/svg element\n        const {nextSibling} = elem;\n        elem.remove();\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n      }\n      batchCmd.addSubCommand(new InsertElementCommand(g));\n    }\n\n    setUseData(g);\n\n    if (isGecko()) {\n      convertGradients(findDefs());\n    } else {\n      convertGradients(g);\n    }\n\n    // recalculate dimensions on the top-level children so that unnecessary transforms\n    // are removed\n    walkTreePost(g, function (n) {\n      try {\n        recalculateDimensions(n);\n      } catch (e) {\n        console.log(e); // eslint-disable-line no-console\n      }\n    });\n\n    // Give ID for any visible element missing one\n    $(g).find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    selectOnly([g]);\n\n    const cm = pushGroupProperties(g, true);\n    if (cm) {\n      batchCmd.addSubCommand(cm);\n    }\n\n    addCommandToHistory(batchCmd);\n  } else {\n    console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console\n  }\n};\n\n/**\n* This function sets the current drawing as the input SVG XML.\n* @function module:svgcanvas.SvgCanvas#setSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @param {boolean} [preventUndo=false] - Indicates if we want to do the\n* changes without adding them to the undo stack - e.g. for initializing a\n* drawing on page load.\n* @fires module:svgcanvas.SvgCanvas#event:setnonce\n* @fires module:svgcanvas.SvgCanvas#event:unsetnonce\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} This function returns `false` if the set was\n*     unsuccessful, `true` otherwise.\n*/\nthis.setSvgString = function (xmlString, preventUndo) {\n  try {\n    // convert string into XML document\n    const newDoc = text2xml(xmlString);\n    if (newDoc.firstElementChild &&\n      newDoc.firstElementChild.namespaceURI !== NS.SVG) {\n      return false;\n    }\n\n    this.prepareSvg(newDoc);\n\n    const batchCmd = new BatchCommand('Change Source');\n\n    // remove old svg document\n    const {nextSibling} = svgcontent;\n    const oldzoom = svgroot.removeChild(svgcontent);\n    batchCmd.addSubCommand(new RemoveElementCommand(oldzoom, nextSibling, svgroot));\n\n    // set new svg document\n    // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n    if (svgdoc.adoptNode) {\n      svgcontent = svgdoc.adoptNode(newDoc.documentElement);\n    } else {\n      svgcontent = svgdoc.importNode(newDoc.documentElement, true);\n    }\n\n    svgroot.append(svgcontent);\n    const content = $(svgcontent);\n\n    canvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n    // retrieve or set the nonce\n    const nonce = getCurrentDrawing().getNonce();\n    if (nonce) {\n      call('setnonce', nonce);\n    } else {\n      call('unsetnonce');\n    }\n\n    // change image href vals if possible\n    content.find('image').each(function () {\n      const image = this; // eslint-disable-line consistent-this\n      preventClickDefault(image);\n      const val = getHref(this);\n      if (val) {\n        if (val.startsWith('data:')) {\n          // Check if an SVG-edit data URI\n          const m = val.match(/svgedit_url=(.*?);/);\n          if (m) {\n            const url = decodeURIComponent(m[1]);\n            $(new Image()).load(function () {\n              image.setAttributeNS(NS.XLINK, 'xlink:href', url);\n            }).attr('src', url);\n          }\n        }\n        // Add to encodableImages if it loads\n        canvas.embedImage(val);\n      }\n    });\n\n    // Wrap child SVGs in group elements\n    content.find('svg').each(function () {\n      // Skip if it's in a <defs>\n      if ($(this).closest('defs').length) { return; }\n\n      uniquifyElems(this);\n\n      // Check if it already has a gsvg group\n      const pa = this.parentNode;\n      if (pa.childNodes.length === 1 && pa.nodeName === 'g') {\n        $(pa).data('gsvg', this);\n        pa.id = pa.id || getNextId();\n      } else {\n        groupSvgElem(this);\n      }\n    });\n\n    // For Firefox: Put all paint elems in defs\n    if (isGecko()) {\n      content.find('linearGradient, radialGradient, pattern').appendTo(findDefs());\n    }\n\n    // Set ref element for <use> elements\n\n    // TODO: This should also be done if the object is re-added through \"redo\"\n    setUseData(content);\n\n    convertGradients(content[0]);\n\n    const attrs = {\n      id: 'svgcontent',\n      overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden'\n    };\n\n    let percs = false;\n\n    // determine proper size\n    if (content.attr('viewBox')) {\n      const vb = content.attr('viewBox').split(' ');\n      attrs.width = vb[2];\n      attrs.height = vb[3];\n    // handle content that doesn't have a viewBox\n    } else {\n      $.each(['width', 'height'], function (i, dim) {\n        // Set to 100 if not given\n        const val = content.attr(dim) || '100%';\n\n        if (String(val).substr(-1) === '%') {\n          // Use user units if percentage given\n          percs = true;\n        } else {\n          attrs[dim] = convertToNum(dim, val);\n        }\n      });\n    }\n\n    // identify layers\n    draw.identifyLayers();\n\n    // Give ID for any visible layer children missing one\n    content.children().find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    // Percentage width/height, so let's base it on visible elements\n    if (percs) {\n      const bb = getStrokedBBoxDefaultVisible();\n      attrs.width = bb.width + bb.x;\n      attrs.height = bb.height + bb.y;\n    }\n\n    // Just in case negative numbers are given or\n    // result from the percs calculation\n    if (attrs.width <= 0) { attrs.width = 100; }\n    if (attrs.height <= 0) { attrs.height = 100; }\n\n    content.attr(attrs);\n    this.contentW = attrs.width;\n    this.contentH = attrs.height;\n\n    batchCmd.addSubCommand(new InsertElementCommand(svgcontent));\n    // update root to the correct size\n    const changes = content.attr(['width', 'height']);\n    batchCmd.addSubCommand(new ChangeElementCommand(svgroot, changes));\n\n    // reset zoom\n    currentZoom = 1;\n\n    // reset transform lists\n    resetListMap();\n    clearSelection();\n    pathModule.clearData();\n    svgroot.append(selectorManager.selectorParentGroup);\n\n    if (!preventUndo) addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e); // eslint-disable-line no-console\n    return false;\n  }\n\n  return true;\n};\n\n/**\n* This function imports the input SVG XML as a `<symbol>` in the `<defs>`, then adds a\n* `<use>` to the current layer.\n* @function module:svgcanvas.SvgCanvas#importSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {null|Element} This function returns null if the import was unsuccessful, or the element otherwise.\n* @todo\n* - properly handle if namespace is introduced by imported content (must add to svgcontent\n* and update all prefixes in the imported node)\n* - properly handle recalculating dimensions, `recalculateDimensions()` doesn't handle\n* arbitrary transform lists, but makes some assumptions about how the transform list\n* was obtained\n*/\nthis.importSvgString = function (xmlString) {\n  let j, ts, useEl;\n  try {\n    // Get unique ID\n    const uid = encode64(xmlString.length + xmlString).substr(0, 32);\n\n    let useExisting = false;\n    // Look for symbol and make sure symbol exists in image\n    if (importIds[uid]) {\n      if ($(importIds[uid].symbol).parents('#svgroot').length) {\n        useExisting = true;\n      }\n    }\n\n    const batchCmd = new BatchCommand('Import Image');\n    let symbol;\n    if (useExisting) {\n      ({symbol} = importIds[uid]);\n      ts = importIds[uid].xform;\n    } else {\n      // convert string into XML document\n      const newDoc = text2xml(xmlString);\n\n      this.prepareSvg(newDoc);\n\n      // import new svg document into our document\n      let svg;\n      // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n      if (svgdoc.adoptNode) {\n        svg = svgdoc.adoptNode(newDoc.documentElement);\n      } else {\n        svg = svgdoc.importNode(newDoc.documentElement, true);\n      }\n\n      uniquifyElems(svg);\n\n      const innerw = convertToNum('width', svg.getAttribute('width')),\n        innerh = convertToNum('height', svg.getAttribute('height')),\n        innervb = svg.getAttribute('viewBox'),\n        // if no explicit viewbox, create one out of the width and height\n        vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];\n      for (j = 0; j < 4; ++j) {\n        vb[j] = Number(vb[j]);\n      }\n\n      // TODO: properly handle preserveAspectRatio\n      const // canvasw = +svgcontent.getAttribute('width'),\n        canvash = Number(svgcontent.getAttribute('height'));\n      // imported content should be 1/3 of the canvas on its largest dimension\n\n      if (innerh > innerw) {\n        ts = 'scale(' + (canvash / 3) / vb[3] + ')';\n      } else {\n        ts = 'scale(' + (canvash / 3) / vb[2] + ')';\n      }\n\n      // Hack to make recalculateDimensions understand how to scale\n      ts = 'translate(0) ' + ts + ' translate(0)';\n\n      symbol = svgdoc.createElementNS(NS.SVG, 'symbol');\n      const defs = findDefs();\n\n      if (isGecko()) {\n        // Move all gradients into root for Firefox, workaround for this bug:\n        // https://bugzilla.mozilla.org/show_bug.cgi?id=353575\n        // TODO: Make this properly undo-able.\n        $(svg).find('linearGradient, radialGradient, pattern').appendTo(defs);\n      }\n\n      while (svg.firstChild) {\n        const first = svg.firstChild;\n        symbol.append(first);\n      }\n      const attrs = svg.attributes;\n      for (let i = 0; i < attrs.length; i++) {\n        const attr = attrs[i];\n        symbol.setAttribute(attr.nodeName, attr.value);\n      }\n      symbol.id = getNextId();\n\n      // Store data\n      importIds[uid] = {\n        symbol,\n        xform: ts\n      };\n\n      findDefs().append(symbol);\n      batchCmd.addSubCommand(new InsertElementCommand(symbol));\n    }\n\n    useEl = svgdoc.createElementNS(NS.SVG, 'use');\n    useEl.id = getNextId();\n    setHref(useEl, '#' + symbol.id);\n\n    (currentGroup || getCurrentDrawing().getCurrentLayer()).append(useEl);\n    batchCmd.addSubCommand(new InsertElementCommand(useEl));\n    clearSelection();\n\n    useEl.setAttribute('transform', ts);\n    recalculateDimensions(useEl);\n    $(useEl).data('symbol', symbol).data('ref', symbol);\n    addToSelection([useEl]);\n\n    // TODO: Find way to add this in a recalculateDimensions-parsable way\n    // if (vb[0] !== 0 || vb[1] !== 0) {\n    //   ts = 'translate(' + (-vb[0]) + ',' + (-vb[1]) + ') ' + ts;\n    // }\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e); // eslint-disable-line no-console\n    return null;\n  }\n\n  // we want to return the element so we can automatically select it\n  return useEl;\n};\n\n// Could deprecate, but besides external uses, their usage makes clear that\n//  canvas is a dependency for all of these\nconst dr = {\n  identifyLayers, createLayer, cloneLayer, deleteCurrentLayer,\n  setCurrentLayer, renameCurrentLayer, setCurrentLayerPosition,\n  setLayerVisibility, moveSelectedToLayer, mergeLayer, mergeAllLayers,\n  leaveContext, setContext\n};\nObject.entries(dr).forEach(([prop, propVal]) => {\n  canvas[prop] = propVal;\n});\ndraw.init(\n  /**\n  * @implements {module:draw.DrawCanvasInit}\n  */\n  {\n    pathActions,\n    getCurrentGroup () {\n      return currentGroup;\n    },\n    setCurrentGroup (cg) {\n      currentGroup = cg;\n    },\n    getSelectedElements,\n    getSVGContent,\n    undoMgr,\n    elData,\n    getCurrentDrawing,\n    clearSelection,\n    call,\n    addCommandToHistory,\n    /**\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    changeSVGContent () {\n      call('changed', [svgcontent]);\n    }\n  }\n);\n\n/**\n* Group: Document functions\n*/\n\n/**\n* Clears the current document. This is not an undoable action.\n* @function module:svgcanvas.SvgCanvas#clear\n* @fires module:svgcanvas.SvgCanvas#event:cleared\n* @returns {undefined}\n*/\nthis.clear = function () {\n  pathActions.clear();\n\n  clearSelection();\n\n  // clear the svgcontent node\n  canvas.clearSvgContentElement();\n\n  // create new document\n  canvas.current_drawing_ = new draw.Drawing(svgcontent);\n\n  // create empty first layer\n  canvas.createLayer('Layer 1');\n\n  // clear the undo stack\n  canvas.undoMgr.resetUndoStack();\n\n  // reset the selector manager\n  selectorManager.initGroup();\n\n  // reset the rubber band box\n  rubberBox = selectorManager.getRubberBandBox();\n\n  call('cleared');\n};\n\n// Alias function\nthis.linkControlPoints = pathActions.linkControlPoints;\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @returns {Element} The content DOM element\n*/\nthis.getContentElem = function () { return svgcontent; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getRootElem\n* @returns {SVGSVGElement} The root DOM element\n*/\nthis.getRootElem = function () { return svgroot; };\n\n/**\n* @typedef {PlainObject} DimensionsAndZoom\n* @property {Float} w Width\n* @property {Float} h Height\n* @property {Float} zoom Zoom\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getResolution\n* @returns {DimensionsAndZoom} The current dimensions and zoom level in an object\n*/\nconst getResolution = this.getResolution = function () {\n//    const vb = svgcontent.getAttribute('viewBox').split(' ');\n//    return {w:vb[2], h:vb[3], zoom: currentZoom};\n\n  const w = svgcontent.getAttribute('width') / currentZoom;\n  const h = svgcontent.getAttribute('height') / currentZoom;\n\n  return {\n    w,\n    h,\n    zoom: currentZoom\n  };\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getSnapToGrid\n* @returns {boolean} The current snap to grid setting\n*/\nthis.getSnapToGrid = function () { return curConfig.gridSnapping; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getVersion\n* @returns {string} A string which describes the revision number of SvgCanvas.\n*/\nthis.getVersion = function () {\n  return 'svgcanvas.js ($Rev$)';\n};\n\n/**\n* Update interface strings with given values.\n* @function module:svgcanvas.SvgCanvas#setUiStrings\n* @param {module:path.uiStrings} strs - Object with strings (see the [locales API]{@link module:locale.LocaleStrings} and the [tutorial]{@tutorial LocaleDocs})\n* @returns {undefined}\n*/\nthis.setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.notification);\n  $ = jQueryPluginDBox($, strs.common);\n  pathModule.setUiStrings(strs);\n};\n\n/**\n* Update configuration options with given values.\n* @function module:svgcanvas.SvgCanvas#setConfig\n* @param {module:SVGEditor.Config} opts - Object with options\n* @returns {undefined}\n*/\nthis.setConfig = function (opts) {\n  Object.assign(curConfig, opts);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getTitle\n* @param {Element} [elem]\n* @returns {string|undefined} the current group/SVG's title contents or\n* `undefined` if no element is passed nd there are no selected elements.\n*/\nthis.getTitle = function (elem) {\n  elem = elem || selectedElements[0];\n  if (!elem) { return undefined; }\n  elem = $(elem).data('gsvg') || $(elem).data('symbol') || elem;\n  const childs = elem.childNodes;\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      return childs[i].textContent;\n    }\n  }\n  return '';\n};\n\n/**\n* Sets the group/SVG's title content.\n* @function module:svgcanvas.SvgCanvas#setGroupTitle\n* @param {string} val\n* @todo Combine this with `setDocumentTitle`\n* @returns {undefined}\n*/\nthis.setGroupTitle = function (val) {\n  let elem = selectedElements[0];\n  elem = $(elem).data('gsvg') || elem;\n\n  const ts = $(elem).children('title');\n\n  const batchCmd = new BatchCommand('Set Label');\n\n  let title;\n  if (!val.length) {\n    // Remove title element\n    const tsNextSibling = ts.nextSibling;\n    batchCmd.addSubCommand(new RemoveElementCommand(ts[0], tsNextSibling, elem));\n    ts.remove();\n  } else if (ts.length) {\n    // Change title contents\n    title = ts[0];\n    batchCmd.addSubCommand(new ChangeElementCommand(title, {'#text': title.textContent}));\n    title.textContent = val;\n  } else {\n    // Add title element\n    title = svgdoc.createElementNS(NS.SVG, 'title');\n    title.textContent = val;\n    $(elem).prepend(title);\n    batchCmd.addSubCommand(new InsertElementCommand(title));\n  }\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getDocumentTitle\n* @returns {string|undefined} The current document title or an empty string if not found\n*/\nconst getDocumentTitle = this.getDocumentTitle = function () {\n  return canvas.getTitle(svgcontent);\n};\n\n/**\n* Adds/updates a title element for the document with the given name.\n* This is an undoable action.\n* @function module:svgcanvas.SvgCanvas#setDocumentTitle\n* @param {string} newTitle - String with the new title\n* @returns {undefined}\n*/\nthis.setDocumentTitle = function (newTitle) {\n  const childs = svgcontent.childNodes;\n  let docTitle = false, oldTitle = '';\n\n  const batchCmd = new BatchCommand('Change Image Title');\n\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      docTitle = childs[i];\n      oldTitle = docTitle.textContent;\n      break;\n    }\n  }\n  if (!docTitle) {\n    docTitle = svgdoc.createElementNS(NS.SVG, 'title');\n    svgcontent.insertBefore(docTitle, svgcontent.firstChild);\n    // svgcontent.firstChild.before(docTitle); // Ok to replace above with this?\n  }\n\n  if (newTitle.length) {\n    docTitle.textContent = newTitle;\n  } else {\n    // No title given, so element is not necessary\n    docTitle.remove();\n  }\n  batchCmd.addSubCommand(new ChangeElementCommand(docTitle, {'#text': oldTitle}));\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Returns the editor's namespace URL, optionally adding it to the root element.\n* @function module:svgcanvas.SvgCanvas#getEditorNS\n* @param {boolean} [add] - Indicates whether or not to add the namespace value\n* @returns {string} The editor's namespace URL\n*/\nthis.getEditorNS = function (add) {\n  if (add) {\n    svgcontent.setAttribute('xmlns:se', NS.SE);\n  }\n  return NS.SE;\n};\n\n/**\n* Changes the document's dimensions to the given size.\n* @function module:svgcanvas.SvgCanvas#setResolution\n* @param {Float|\"fit\"} x - Number with the width of the new dimensions in user units.\n* Can also be the string \"fit\" to indicate \"fit to content\".\n* @param {Float} y - Number with the height of the new dimensions in user units.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Indicates if resolution change was successful.\n* It will fail on \"fit to content\" option with no content to fit to.\n*/\nthis.setResolution = function (x, y) {\n  const res = getResolution();\n  const {w, h} = res;\n  let batchCmd;\n\n  if (x === 'fit') {\n    // Get bounding box\n    const bbox = getStrokedBBoxDefaultVisible();\n\n    if (bbox) {\n      batchCmd = new BatchCommand('Fit Canvas to Content');\n      const visEls = getVisibleElements();\n      addToSelection(visEls);\n      const dx = [], dy = [];\n      $.each(visEls, function (i, item) {\n        dx.push(bbox.x * -1);\n        dy.push(bbox.y * -1);\n      });\n\n      const cmd = canvas.moveSelectedElements(dx, dy, true);\n      batchCmd.addSubCommand(cmd);\n      clearSelection();\n\n      x = Math.round(bbox.width);\n      y = Math.round(bbox.height);\n    } else {\n      return false;\n    }\n  }\n  if (x !== w || y !== h) {\n    if (!batchCmd) {\n      batchCmd = new BatchCommand('Change Image Dimensions');\n    }\n\n    x = convertToNum('width', x);\n    y = convertToNum('height', y);\n\n    svgcontent.setAttribute('width', x);\n    svgcontent.setAttribute('height', y);\n\n    this.contentW = x;\n    this.contentH = y;\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {width: w, height: h}));\n\n    svgcontent.setAttribute('viewBox', [0, 0, x / currentZoom, y / currentZoom].join(' '));\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {viewBox: ['0 0', w, h].join(' ')}));\n\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  }\n  return true;\n};\n\n/**\n* @typedef {module:jQueryAttr.Attributes} module:svgcanvas.ElementPositionInCanvas\n* @property {Float} x\n* @property {Float} y\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOffset\n* @returns {module:svgcanvas.ElementPositionInCanvas} An object with `x`, `y` values indicating the svgcontent element's\n* position in the editor's canvas.\n*/\nthis.getOffset = function () {\n  return $(svgcontent).attr(['x', 'y']);\n};\n\n/**\n * @typedef {PlainObject} module:svgcanvas.ZoomAndBBox\n * @property {Float} zoom\n * @property {module:utilities.BBoxObject} bbox\n */\n/**\n* Sets the zoom level on the canvas-side based on the given value.\n* @function module:svgcanvas.SvgCanvas#setBBoxZoom\n* @param {\"selection\"|\"canvas\"|\"content\"|\"layer\"|module:SVGEditor.BBoxObjectWithFactor} val - Bounding box object to zoom to or string indicating zoom option. Note: the object value type is defined in `svg-editor.js`\n* @param {Integer} editorW - The editor's workarea box's width\n* @param {Integer} editorH - The editor's workarea box's height\n* @returns {module:svgcanvas.ZoomAndBBox|undefined}\n*/\nthis.setBBoxZoom = function (val, editorW, editorH) {\n  let spacer = 0.85;\n  let bb;\n  const calcZoom = function (bb) { // eslint-disable-line no-shadow\n    if (!bb) { return false; }\n    const wZoom = Math.round((editorW / bb.width) * 100 * spacer) / 100;\n    const hZoom = Math.round((editorH / bb.height) * 100 * spacer) / 100;\n    const zoom = Math.min(wZoom, hZoom);\n    canvas.setZoom(zoom);\n    return {zoom, bbox: bb};\n  };\n\n  if (typeof val === 'object') {\n    bb = val;\n    if (bb.width === 0 || bb.height === 0) {\n      const newzoom = bb.zoom ? bb.zoom : currentZoom * bb.factor;\n      canvas.setZoom(newzoom);\n      return {zoom: currentZoom, bbox: bb};\n    }\n    return calcZoom(bb);\n  }\n\n  switch (val) {\n  case 'selection': {\n    if (!selectedElements[0]) { return undefined; }\n    const selectedElems = $.map(selectedElements, function (n) {\n      if (n) {\n        return n;\n      }\n      return undefined;\n    });\n    bb = getStrokedBBoxDefaultVisible(selectedElems);\n    break;\n  } case 'canvas': {\n    const res = getResolution();\n    spacer = 0.95;\n    bb = {width: res.w, height: res.h, x: 0, y: 0};\n    break;\n  } case 'content':\n    bb = getStrokedBBoxDefaultVisible();\n    break;\n  case 'layer':\n    bb = getStrokedBBoxDefaultVisible(getVisibleElements(getCurrentDrawing().getCurrentLayer()));\n    break;\n  default:\n    return undefined;\n  }\n  return calcZoom(bb);\n};\n\n/**\n* The zoom level has changed. Supplies the new zoom level as a number (not percentage).\n* @event module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @type {Float}\n*/\n/**\n* The bottom panel was updated\n* @event module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n* @type {PlainObject}\n* @property {boolean} nofill Indicates fill is disabled\n* @property {boolean} nostroke Indicates stroke is disabled\n*/\n/**\n* The element selection has changed (elements were added/removed from selection)\n* @event module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the newly selected elements\n* @property {Element|null} selectedElement The single selected element\n* @property {boolean} multiselected Indicates whether one or more elements were selected\n*/\n/**\n* Called when part of element is in process of changing, generally on\n* mousemove actions like rotate, move, etc.\n* @event module:svgcanvas.SvgCanvas#event:ext-elementTransition\n* @type {PlainObject}\n* @property {Element[]} elems Array of transitioning elements\n*/\n/**\n* One or more elements were changed\n* @event module:svgcanvas.SvgCanvas#event:ext-elementChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the affected elements\n*/\n/**\n* Invoked as soon as the locale is ready\n* @event module:svgcanvas.SvgCanvas#event:ext-langReady\n* @type {PlainObject}\n* @property {string} lang The two-letter language code\n* @property {module:SVGEditor.uiStrings} uiStrings\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n* The language was changed. Two-letter code of the new language.\n* @event module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @type {string}\n*/\n/**\n* Means for an extension to add locale data. The two-letter language code.\n* @event module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @type {PlainObject}\n* @property {string} lang\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n * Called when new image is created\n * @event module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n * @type {undefined}\n */\n/**\n * Called when sidepanel is resized or toggled\n * @event module:svgcanvas.SvgCanvas#event:ext-workareaResized\n * @type {undefined}\n*/\n/**\n * Called upon addition of the extension, or, if svgicons are set,\n * after the icons are ready when extension SVG icons have loaded.\n * @event module:svgcanvas.SvgCanvas#event:ext-callback\n * @type {undefined}\n*/\n\n/**\n* Sets the zoom to the given level.\n* @function module:svgcanvas.SvgCanvas#setZoom\n* @param {Float} zoomLevel - Float indicating the zoom level to change to\n* @fires module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @returns {undefined}\n*/\nthis.setZoom = function (zoomLevel) {\n  const res = getResolution();\n  svgcontent.setAttribute('viewBox', '0 0 ' + res.w / zoomLevel + ' ' + res.h / zoomLevel);\n  currentZoom = zoomLevel;\n  $.each(selectedElements, function (i, elem) {\n    if (!elem) { return; }\n    selectorManager.requestSelector(elem).resize();\n  });\n  pathActions.zoomChange();\n  runExtensions('zoomChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} */ zoomLevel);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMode\n* @returns {string} The current editor mode string\n*/\nthis.getMode = function () {\n  return currentMode;\n};\n\n/**\n* Sets the editor's mode to the given string.\n* @function module:svgcanvas.SvgCanvas#setMode\n* @param {string} name - String with the new mode to change to\n* @returns {undefined}\n*/\nthis.setMode = function (name) {\n  pathActions.clear(true);\n  textActions.clear();\n  curProperties = (selectedElements[0] && selectedElements[0].nodeName === 'text') ? curText : curShape;\n  currentMode = name;\n};\n\n/**\n* Group: Element Styling\n*/\n\n/**\n* @typedef {PlainObject} module:svgcanvas.PaintOptions\n* @property {\"solidColor\"} type\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getColor\n* @param {string} type\n* @returns {string|module:svgcanvas.PaintOptions|Float|module:jGraduate~Paint} The current fill/stroke option\n*/\nthis.getColor = function (type) {\n  return curProperties[type];\n};\n\n/**\n* Change the current stroke/fill color/gradient value.\n* @function module:svgcanvas.SvgCanvas#setColor\n* @param {string} type - String indicating fill or stroke\n* @param {string} val - The value to set the stroke attribute to\n* @param {boolean} preventUndo - Boolean indicating whether or not this should be an undoable option\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setColor = function (type, val, preventUndo) {\n  curShape[type] = val;\n  curProperties[type + '_paint'] = {type: 'solidColor'};\n  const elems = [];\n  /**\n   *\n   * @param {Element} e\n   * @returns {undefined}\n   */\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else if (type === 'fill') {\n        if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {\n          elems.push(elem);\n        }\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    if (!preventUndo) {\n      changeSelectedAttribute(type, val, elems);\n      call('changed', elems);\n    } else {\n      changeSelectedAttributeNoUndo(type, val, elems);\n    }\n  }\n};\n\n/**\n* Apply the current gradient to selected element's fill or stroke.\n* @function module:svgcanvas.SvgCanvas#setGradient\n* @param {\"fill\"|\"stroke\"} type - String indicating \"fill\" or \"stroke\" to apply to an element\n* @returns {undefined}\n*/\nconst setGradient = this.setGradient = function (type) {\n  if (!curProperties[type + '_paint'] || curProperties[type + '_paint'].type === 'solidColor') { return; }\n  let grad = canvas[type + 'Grad'];\n  // find out if there is a duplicate gradient already in the defs\n  const duplicateGrad = findDuplicateGradient(grad);\n  const defs = findDefs();\n  // no duplicate found, so import gradient into defs\n  if (!duplicateGrad) {\n    // const origGrad = grad;\n    grad = defs.appendChild(svgdoc.importNode(grad, true));\n    // get next id and set it on the grad\n    grad.id = getNextId();\n  } else { // use existing gradient\n    grad = duplicateGrad;\n  }\n  canvas.setColor(type, 'url(#' + grad.id + ')');\n};\n\n/**\n* Check if exact gradient already exists.\n* @function module:svgcanvas~findDuplicateGradient\n* @param {SVGGradientElement} grad - The gradient DOM element to compare to others\n* @returns {SVGGradientElement} The existing gradient if found, `null` if not\n*/\nconst findDuplicateGradient = function (grad) {\n  const defs = findDefs();\n  const existingGrads = $(defs).find('linearGradient, radialGradient');\n  let i = existingGrads.length;\n  const radAttrs = ['r', 'cx', 'cy', 'fx', 'fy'];\n  while (i--) {\n    const og = existingGrads[i];\n    if (grad.tagName === 'linearGradient') {\n      if (grad.getAttribute('x1') !== og.getAttribute('x1') ||\n        grad.getAttribute('y1') !== og.getAttribute('y1') ||\n        grad.getAttribute('x2') !== og.getAttribute('x2') ||\n        grad.getAttribute('y2') !== og.getAttribute('y2')\n      ) {\n        continue;\n      }\n    } else {\n      const gradAttrs = $(grad).attr(radAttrs);\n      const ogAttrs = $(og).attr(radAttrs);\n\n      let diff = false;\n      $.each(radAttrs, function (j, attr) {\n        if (gradAttrs[attr] !== ogAttrs[attr]) { diff = true; }\n      });\n\n      if (diff) { continue; }\n    }\n\n    // else could be a duplicate, iterate through stops\n    const stops = grad.getElementsByTagNameNS(NS.SVG, 'stop');\n    const ostops = og.getElementsByTagNameNS(NS.SVG, 'stop');\n\n    if (stops.length !== ostops.length) {\n      continue;\n    }\n\n    let j = stops.length;\n    while (j--) {\n      const stop = stops[j];\n      const ostop = ostops[j];\n\n      if (stop.getAttribute('offset') !== ostop.getAttribute('offset') ||\n        stop.getAttribute('stop-opacity') !== ostop.getAttribute('stop-opacity') ||\n        stop.getAttribute('stop-color') !== ostop.getAttribute('stop-color')) {\n        break;\n      }\n    }\n\n    if (j === -1) {\n      return og;\n    }\n  } // for each gradient in defs\n\n  return null;\n};\n\n/**\n* Set a color/gradient to a fill/stroke.\n* @function module:svgcanvas.SvgCanvas#setPaint\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @param {module:jGraduate.jGraduatePaintOptions} paint - The jGraduate paint object to apply\n* @returns {undefined}\n*/\nthis.setPaint = function (type, paint) {\n  // make a copy\n  const p = new $.jGraduate.Paint(paint);\n  this.setPaintOpacity(type, p.alpha / 100, true);\n\n  // now set the current paint object\n  curProperties[type + '_paint'] = p;\n  switch (p.type) {\n  case 'solidColor':\n    this.setColor(type, p.solidColor !== 'none' ? '#' + p.solidColor : 'none');\n    break;\n  case 'linearGradient':\n  case 'radialGradient':\n    canvas[type + 'Grad'] = p[p.type];\n    setGradient(type);\n    break;\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setStrokePaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setStrokePaint = function (paint) {\n  this.setPaint('stroke', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setFillPaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setFillPaint = function (paint) {\n  this.setPaint('fill', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeWidth\n* @returns {Float|string} The current stroke-width value\n*/\nthis.getStrokeWidth = function () {\n  return curProperties.stroke_width;\n};\n\n/**\n* Sets the stroke width for the current selected elements.\n* When attempting to set a line's width to 0, this changes it to 1 instead.\n* @function module:svgcanvas.SvgCanvas#setStrokeWidth\n* @param {Float} val - A Float indicating the new stroke width value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeWidth = function (val) {\n  if (val === 0 && ['line', 'path'].includes(currentMode)) {\n    canvas.setStrokeWidth(1);\n    return;\n  }\n  curProperties.stroke_width = val;\n\n  const elems = [];\n  /**\n   *\n   * @param {Element} e\n   * @returns {undefined}\n   */\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute('stroke-width', val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* Set the given stroke-related attribute the given value for selected elements.\n* @function module:svgcanvas.SvgCanvas#setStrokeAttr\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the attribute value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeAttr = function (attr, val) {\n  curShape[attr.replace('-', '_')] = val;\n  const elems = [];\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, function (e) { if (e.nodeName !== 'g') { elems.push(e); } });\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute(attr, val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.StyleOptions\n* @property {string} fill\n* @property {Float} fill_opacity\n* @property {string} stroke\n* @property {Float} stroke_width\n* @property {string} stroke_dasharray\n* @property {string} stroke_linejoin\n* @property {string} stroke_linecap\n* @property {Float} stroke_opacity\n* @property {Float} opacity\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStyle\n* @returns {module:svgcanvas.StyleOptions} current style options\n*/\nthis.getStyle = function () {\n  return curShape;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOpacity\n* @returns {Float} the current opacity\n*/\nthis.getOpacity = getOpacity;\n\n/**\n* Sets the given opacity on the current selected elements.\n* @function module:svgcanvas.SvgCanvas#setOpacity\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setOpacity = function (val) {\n  curShape.opacity = val;\n  changeSelectedAttribute('opacity', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFillOpacity\n* @returns {Float} the current fill opacity\n*/\nthis.getFillOpacity = function () {\n  return curShape.fill_opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeOpacity\n* @returns {string} the current stroke opacity\n*/\nthis.getStrokeOpacity = function () {\n  return curShape.stroke_opacity;\n};\n\n/**\n* Sets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#setPaintOpacity\n* @param {string} type - String with \"fill\" or \"stroke\"\n* @param {Float} val - Float with the new opacity value\n* @param {boolean} preventUndo - Indicates whether or not this should be an undoable action\n* @returns {undefined}\n*/\nthis.setPaintOpacity = function (type, val, preventUndo) {\n  curShape[type + '_opacity'] = val;\n  if (!preventUndo) {\n    changeSelectedAttribute(type + '-opacity', val);\n  } else {\n    changeSelectedAttributeNoUndo(type + '-opacity', val);\n  }\n};\n\n/**\n* Gets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#getPaintOpacity\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @returns {Float} Fill/stroke opacity\n*/\nthis.getPaintOpacity = function (type) {\n  return type === 'fill' ? this.getFillOpacity() : this.getStrokeOpacity();\n};\n\n/**\n* Gets the `stdDeviation` blur value of the given element.\n* @function module:svgcanvas.SvgCanvas#getBlur\n* @param {Element} elem - The element to check the blur value for\n* @returns {string} stdDeviation blur attribute value\n*/\nthis.getBlur = function (elem) {\n  let val = 0;\n  // const elem = selectedElements[0];\n\n  if (elem) {\n    const filterUrl = elem.getAttribute('filter');\n    if (filterUrl) {\n      const blur = getElem(elem.id + '_blur');\n      if (blur) {\n        val = blur.firstChild.getAttribute('stdDeviation');\n      }\n    }\n  }\n  return val;\n};\n\n(function () {\nlet curCommand = null;\nlet filter = null;\nlet filterHidden = false;\n\n/**\n* Sets the `stdDeviation` blur value on the selected element without being undoable.\n* @function module:svgcanvas.SvgCanvas#setBlurNoUndo\n* @param {Float} val - The new `stdDeviation` value\n* @returns {undefined}\n*/\ncanvas.setBlurNoUndo = function (val) {\n  if (!filter) {\n    canvas.setBlur(val);\n    return;\n  }\n  if (val === 0) {\n    // Don't change the StdDev, as that will hide the element.\n    // Instead, just remove the value for \"filter\"\n    changeSelectedAttributeNoUndo('filter', '');\n    filterHidden = true;\n  } else {\n    const elem = selectedElements[0];\n    if (filterHidden) {\n      changeSelectedAttributeNoUndo('filter', 'url(#' + elem.id + '_blur)');\n    }\n    if (isWebkit()) {\n      // console.log('e', elem); // eslint-disable-line no-console\n      elem.removeAttribute('filter');\n      elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');\n    }\n    changeSelectedAttributeNoUndo('stdDeviation', val, [filter.firstChild]);\n    canvas.setBlurOffsets(filter, val);\n  }\n};\n\n/**\n *\n * @returns {undefined}\n */\nfunction finishChange () {\n  const bCmd = canvas.undoMgr.finishUndoableChange();\n  curCommand.addSubCommand(bCmd);\n  addCommandToHistory(curCommand);\n  curCommand = null;\n  filter = null;\n}\n\n/**\n* Sets the `x`, `y`, `width`, `height` values of the filter element in order to\n* make the blur not be clipped. Removes them if not neeeded.\n* @function module:svgcanvas.SvgCanvas#setBlurOffsets\n* @param {Element} filterElem - The filter DOM element to update\n* @param {Float} stdDev - The standard deviation value on which to base the offset size\n* @returns {undefined}\n*/\ncanvas.setBlurOffsets = function (filterElem, stdDev) {\n  if (stdDev > 3) {\n    // TODO: Create algorithm here where size is based on expected blur\n    assignAttributes(filterElem, {\n      x: '-50%',\n      y: '-50%',\n      width: '200%',\n      height: '200%'\n    }, 100);\n  // Removing these attributes hides text in Chrome (see Issue 579)\n  } else if (!isWebkit()) {\n      filterElem.removeAttribute('x');\n      filterElem.removeAttribute('y');\n      filterElem.removeAttribute('width');\n      filterElem.removeAttribute('height');\n  }\n};\n\n/**\n* Adds/updates the blur filter to the selected element.\n* @function module:svgcanvas.SvgCanvas#setBlur\n* @param {Float} val - Float with the new `stdDeviation` blur value\n* @param {boolean} complete - Whether or not the action should be completed (to add to the undo manager)\n* @returns {undefined}\n*/\ncanvas.setBlur = function (val, complete) {\n  if (curCommand) {\n    finishChange();\n    return;\n  }\n\n  // Looks for associated blur, creates one if not found\n  const elem = selectedElements[0];\n  const elemId = elem.id;\n  filter = getElem(elemId + '_blur');\n\n  val -= 0;\n\n  const batchCmd = new BatchCommand();\n\n  // Blur found!\n  if (filter) {\n    if (val === 0) {\n      filter = null;\n    }\n  } else {\n    // Not found, so create\n    const newblur = addSVGElementFromJson({element: 'feGaussianBlur',\n      attr: {\n        in: 'SourceGraphic',\n        stdDeviation: val\n      }\n    });\n\n    filter = addSVGElementFromJson({element: 'filter',\n      attr: {\n        id: elemId + '_blur'\n      }\n    });\n\n    filter.append(newblur);\n    findDefs().append(filter);\n\n    batchCmd.addSubCommand(new InsertElementCommand(filter));\n  }\n\n  const changes = {filter: elem.getAttribute('filter')};\n\n  if (val === 0) {\n    elem.removeAttribute('filter');\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    return;\n  }\n\n  changeSelectedAttribute('filter', 'url(#' + elemId + '_blur)');\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n  canvas.setBlurOffsets(filter, val);\n\n  curCommand = batchCmd;\n  canvas.undoMgr.beginUndoableChange('stdDeviation', [filter ? filter.firstChild : null]);\n  if (complete) {\n    canvas.setBlurNoUndo(val);\n    finishChange();\n  }\n};\n}());\n\n/**\n* Check whether selected element is bold or not.\n* @function module:svgcanvas.SvgCanvas#getBold\n* @returns {boolean} Indicates whether or not element is bold\n*/\nthis.getBold = function () {\n  // should only have one element selected\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    return (selected.getAttribute('font-weight') === 'bold');\n  }\n  return false;\n};\n\n/**\n* Make the selected element bold or normal.\n* @function module:svgcanvas.SvgCanvas#setBold\n* @param {boolean} b - Indicates bold (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setBold = function (b) {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Check whether selected element is in italics or not.\n* @function module:svgcanvas.SvgCanvas#getItalic\n* @returns {boolean} Indicates whether or not element is italic\n*/\nthis.getItalic = function () {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    return (selected.getAttribute('font-style') === 'italic');\n  }\n  return false;\n};\n\n/**\n* Make the selected element italic or normal.\n* @function module:svgcanvas.SvgCanvas#setItalic\n* @param {boolean} i - Indicates italic (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setItalic = function (i) {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    changeSelectedAttribute('font-style', i ? 'italic' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontFamily\n* @returns {string} The current font family\n*/\nthis.getFontFamily = function () {\n  return curText.font_family;\n};\n\n/**\n* Set the new font family.\n* @function module:svgcanvas.SvgCanvas#setFontFamily\n* @param {string} val - String with the new font family\n* @returns {undefined}\n*/\nthis.setFontFamily = function (val) {\n  curText.font_family = val;\n  changeSelectedAttribute('font-family', val);\n  if (selectedElements[0] && !selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Set the new font color.\n* @function module:svgcanvas.SvgCanvas#setFontColor\n* @param {string} val - String with the new font color\n* @returns {undefined}\n*/\nthis.setFontColor = function (val) {\n  curText.fill = val;\n  changeSelectedAttribute('fill', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontColor\n* @returns {string} The current font color\n*/\nthis.getFontColor = function () {\n  return curText.fill;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontSize\n* @returns {Float} The current font size\n*/\nthis.getFontSize = function () {\n  return curText.font_size;\n};\n\n/**\n* Applies the given font size to the selected element.\n* @function module:svgcanvas.SvgCanvas#setFontSize\n* @param {Float} val - Float with the new font size\n* @returns {undefined}\n*/\nthis.setFontSize = function (val) {\n  curText.font_size = val;\n  changeSelectedAttribute('font-size', val);\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getText\n* @returns {string} The current text (`textContent`) of the selected element\n*/\nthis.getText = function () {\n  const selected = selectedElements[0];\n  if (isNullish(selected)) { return ''; }\n  return selected.textContent;\n};\n\n/**\n* Updates the text element with the given string.\n* @function module:svgcanvas.SvgCanvas#setTextContent\n* @param {string} val - String with the new text\n* @returns {undefined}\n*/\nthis.setTextContent = function (val) {\n  changeSelectedAttribute('#text', val);\n  textActions.init(val);\n  textActions.setCursor();\n};\n\n/**\n* Sets the new image URL for the selected image element. Updates its size if\n* a new URL is given.\n* @function module:svgcanvas.SvgCanvas#setImageURL\n* @param {string} val - String with the image URL/path\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setImageURL = function (val) {\n  const elem = selectedElements[0];\n  if (!elem) { return; }\n\n  const attrs = $(elem).attr(['width', 'height']);\n  const setsize = (!attrs.width || !attrs.height);\n\n  const curHref = getHref(elem);\n\n  // Do nothing if no URL change or size change\n  if (curHref === val && !setsize) {\n    return;\n  }\n\n  const batchCmd = new BatchCommand('Change Image URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  $(new Image()).load(function () {\n    const changes = $(elem).attr(['width', 'height']);\n\n    $(elem).attr({\n      width: this.width,\n      height: this.height\n    });\n\n    selectorManager.requestSelector(elem).resize();\n\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    addCommandToHistory(batchCmd);\n    call('changed', [elem]);\n  }).attr('src', val);\n};\n\n/**\n* Sets the new link URL for the selected anchor element.\n* @function module:svgcanvas.SvgCanvas#setLinkURL\n* @param {string} val - String with the link URL/path\n* @returns {undefined}\n*/\nthis.setLinkURL = function (val) {\n  let elem = selectedElements[0];\n  if (!elem) { return; }\n  if (elem.tagName !== 'a') {\n    // See if parent is an anchor\n    const parentsA = $(elem).parents('a');\n    if (parentsA.length) {\n      elem = parentsA[0];\n    } else {\n      return;\n    }\n  }\n\n  const curHref = getHref(elem);\n\n  if (curHref === val) { return; }\n\n  const batchCmd = new BatchCommand('Change Link URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Sets the `rx` and `ry` values to the selected `rect` element\n* to change its corner radius.\n* @function module:svgcanvas.SvgCanvas#setRectRadius\n* @param {string|Float} val - The new radius\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRectRadius = function (val) {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'rect') {\n    const r = selected.getAttribute('rx');\n    if (r !== String(val)) {\n      selected.setAttribute('rx', val);\n      selected.setAttribute('ry', val);\n      addCommandToHistory(new ChangeElementCommand(selected, {rx: r, ry: r}, 'Radius'));\n      call('changed', [selected]);\n    }\n  }\n};\n\n/**\n* Wraps the selected element(s) in an anchor element or converts group to one.\n* @function module:svgcanvas.SvgCanvas#makeHyperlink\n* @param {string} url\n* @returns {undefined}\n*/\nthis.makeHyperlink = function (url) {\n  canvas.groupSelectedElements('a', url);\n\n  // TODO: If element is a single \"g\", convert to \"a\"\n  //  if (selectedElements.length > 1 && selectedElements[1]) {\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#removeHyperlink\n* @returns {undefined}\n*/\nthis.removeHyperlink = function () {\n  canvas.ungroupSelectedElement();\n};\n\n/**\n* Group: Element manipulation\n*/\n\n/**\n* Sets the new segment type to the selected segment(s).\n* @function module:svgcanvas.SvgCanvas#setSegType\n* @param {Integer} newType - New segment type. See {@link https://www.w3.org/TR/SVG/paths.html#InterfaceSVGPathSeg} for list\n* @returns {undefined}\n*/\nthis.setSegType = function (newType) {\n  pathActions.setSegType(newType);\n};\n\n/**\n* Convert selected element to a path, or get the BBox of an element-as-path.\n* @function module:svgcanvas.SvgCanvas#convertToPath\n* @todo (codedread): Remove the getBBox argument and split this function into two.\n* @param {Element} elem - The DOM element to be converted\n* @param {boolean} getBBox - Boolean on whether or not to only return the path's BBox\n* @returns {undefined|DOMRect|false|SVGPathElement|null} If the getBBox flag is true, the resulting path's bounding box object.\n* Otherwise the resulting path element is returned.\n*/\nthis.convertToPath = function (elem, getBBox) {\n  if (isNullish(elem)) {\n    const elems = selectedElements;\n    $.each(elems, function (i, el) {\n      if (el) { canvas.convertToPath(el); }\n    });\n    return undefined;\n  }\n  if (getBBox) {\n    return getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n  }\n  // TODO: Why is this applying attributes from curShape, then inside utilities.convertToPath it's pulling addition attributes from elem?\n  // TODO: If convertToPath is called with one elem, curShape and elem are probably the same; but calling with multiple is a bug or cool feature.\n  const attrs = {\n    fill: curShape.fill,\n    'fill-opacity': curShape.fill_opacity,\n    stroke: curShape.stroke,\n    'stroke-width': curShape.stroke_width,\n    'stroke-dasharray': curShape.stroke_dasharray,\n    'stroke-linejoin': curShape.stroke_linejoin,\n    'stroke-linecap': curShape.stroke_linecap,\n    'stroke-opacity': curShape.stroke_opacity,\n    opacity: curShape.opacity,\n    visibility: 'hidden'\n  };\n  return convertToPath(elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, hstry, addCommandToHistory);\n};\n\n/**\n* This function makes the changes to the elements. It does not add the change\n* to the history stack.\n* @param {string} attr - Attribute name\n* @param {string|Float} newValue - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttributeNoUndo = function (attr, newValue, elems) {\n  if (currentMode === 'pathedit') {\n    // Editing node\n    pathActions.moveNode(attr, newValue);\n  }\n  elems = elems || selectedElements;\n  let i = elems.length;\n  const noXYElems = ['g', 'polyline', 'path'];\n  // const goodGAttrs = ['transform', 'opacity', 'filter'];\n\n  while (i--) {\n    let elem = elems[i];\n    if (isNullish(elem)) { continue; }\n\n    // Set x,y vals on elements that don't have them\n    if ((attr === 'x' || attr === 'y') && noXYElems.includes(elem.tagName)) {\n      const bbox = getStrokedBBoxDefaultVisible([elem]);\n      const diffX = attr === 'x' ? newValue - bbox.x : 0;\n      const diffY = attr === 'y' ? newValue - bbox.y : 0;\n      canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);\n      continue;\n    }\n\n    // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky\n    // TODO: FIXME: Missing statement body\n    // if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}\n    let oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);\n    if (isNullish(oldval)) { oldval = ''; }\n    if (oldval !== String(newValue)) {\n      if (attr === '#text') {\n        // const oldW = utilsGetBBox(elem).width;\n        elem.textContent = newValue;\n\n        // FF bug occurs on on rotated elements\n        if ((/rotate/).test(elem.getAttribute('transform'))) {\n          elem = ffClone(elem);\n        }\n        // Hoped to solve the issue of moving text with text-anchor=\"start\",\n        // but this doesn't actually fix it. Hopefully on the right track, though. -Fyrd\n        // const box = getBBox(elem), left = box.x, top = box.y, {width, height} = box,\n        //   dx = width - oldW, dy = 0;\n        // const angle = getRotationAngle(elem, true);\n        // if (angle) {\n        //   const r = Math.sqrt(dx * dx + dy * dy);\n        //   const theta = Math.atan2(dy, dx) - angle;\n        //   dx = r * Math.cos(theta);\n        //   dy = r * Math.sin(theta);\n        //\n        //   elem.setAttribute('x', elem.getAttribute('x') - dx);\n        //   elem.setAttribute('y', elem.getAttribute('y') - dy);\n        // }\n      } else if (attr === '#href') {\n        setHref(elem, newValue);\n      } else { elem.setAttribute(attr, newValue); }\n\n      // Go into \"select\" mode for text changes\n      // NOTE: Important that this happens AFTER elem.setAttribute() or else attributes like\n      // font-size can get reset to their old value, ultimately by svgEditor.updateContextPanel(),\n      // after calling textActions.toSelectMode() below\n      if (currentMode === 'textedit' && attr !== '#text' && elem.textContent.length) {\n        textActions.toSelectMode(elem);\n      }\n\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(elem);\n      // }\n\n      // Use the Firefox ffClone hack for text elements with gradients or\n      // where other text attributes are changed.\n      if (isGecko() && elem.nodeName === 'text' && (/rotate/).test(elem.getAttribute('transform'))) {\n        if (String(newValue).startsWith('url') || (['font-size', 'font-family', 'x', 'y'].includes(attr) && elem.textContent)) {\n          elem = ffClone(elem);\n        }\n      }\n      // Timeout needed for Opera & Firefox\n      // codedread: it is now possible for this function to be called with elements\n      // that are not in the selectedElements array, we need to only request a\n      // selector if the element is in that array\n      if (selectedElements.includes(elem)) {\n        setTimeout(function () {\n          // Due to element replacement, this element may no longer\n          // be part of the DOM\n          if (!elem.parentNode) { return; }\n          selectorManager.requestSelector(elem).resize();\n        }, 0);\n      }\n      // if this element was rotated, and we changed the position of this element\n      // we need to update the rotational transform attribute\n      const angle = getRotationAngle(elem);\n      if (angle !== 0 && attr !== 'transform') {\n        const tlist = getTransformList(elem);\n        let n = tlist.numberOfItems;\n        while (n--) {\n          const xform = tlist.getItem(n);\n          if (xform.type === 4) {\n            // remove old rotate\n            tlist.removeItem(n);\n\n            const box = utilsGetBBox(elem);\n            const center = transformPoint(box.x + box.width / 2, box.y + box.height / 2, transformListToTransform(tlist).matrix);\n            const cx = center.x,\n              cy = center.y;\n            const newrot = svgroot.createSVGTransform();\n            newrot.setRotate(angle, cx, cy);\n            tlist.insertItemBefore(newrot, n);\n            break;\n          }\n        }\n      }\n    } // if oldValue != newValue\n  } // for each elem\n};\n\n/**\n* Change the given/selected element and add the original value to the history stack.\n* If you want to change all `selectedElements`, ignore the `elems` argument.\n* If you want to change only a subset of `selectedElements`, then send the\n* subset to this function in the `elems` argument.\n* @function module:svgcanvas.SvgCanvas#changeSelectedAttribute\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttribute = this.changeSelectedAttribute = function (attr, val, elems) {\n  elems = elems || selectedElements;\n  canvas.undoMgr.beginUndoableChange(attr, elems);\n  // const i = elems.length;\n\n  changeSelectedAttributeNoUndo(attr, val, elems);\n\n  const batchCmd = canvas.undoMgr.finishUndoableChange();\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack.\n* @function module:svgcanvas.SvgCanvas#deleteSelectedElements\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.deleteSelectedElements = function () {\n  const batchCmd = new BatchCommand('Delete Elements');\n  const len = selectedElements.length;\n  const selectedCopy = []; // selectedElements is being deleted\n\n  for (let i = 0; i < len; ++i) {\n    const selected = selectedElements[i];\n    if (isNullish(selected)) { break; }\n\n    let parent = selected.parentNode;\n    let t = selected;\n\n    // this will unselect the element and remove the selectedOutline\n    selectorManager.releaseSelector(t);\n\n    // Remove the path if present.\n    pathModule.removePath_(t.id);\n\n    // Get the parent if it's a single-child anchor\n    if (parent.tagName === 'a' && parent.childNodes.length === 1) {\n      t = parent;\n      parent = parent.parentNode;\n    }\n\n    const {nextSibling} = t;\n    const elem = parent.removeChild(t);\n    selectedCopy.push(selected); // for the copy\n    batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n  }\n  selectedElements = [];\n\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n  call('changed', selectedCopy);\n  clearSelection();\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack. Remembers removed elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#cutSelectedElements\n* @returns {undefined}\n*/\nthis.cutSelectedElements = function () {\n  canvas.copySelectedElements();\n  canvas.deleteSelectedElements();\n};\n\n/**\n* Remembers the current selected elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#copySelectedElements\n* @returns {undefined}\n*/\nthis.copySelectedElements = function () {\n  localStorage.setItem('svgedit_clipboard', JSON.stringify(\n    selectedElements.map(function (x) { return getJsonFromSvgElement(x); })\n  ));\n\n  $('#cmenu_canvas').enableContextMenuItems('#paste,#paste_in_place');\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#pasteElements\n* @param {\"in_place\"|\"point\"|undefined} type\n* @param {Integer|undefined} x Expected if type is \"point\"\n* @param {Integer|undefined} y Expected if type is \"point\"\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @fires module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n* @returns {undefined}\n*/\nthis.pasteElements = function (type, x, y) {\n  let clipb = JSON.parse(localStorage.getItem('svgedit_clipboard'));\n  let len = clipb.length;\n  if (!len) { return; }\n\n  const pasted = [];\n  const batchCmd = new BatchCommand('Paste elements');\n  // const drawing = getCurrentDrawing();\n  /**\n  * @typedef {PlainObject.<string, string>} module:svgcanvas.ChangedIDs\n  */\n  /**\n   * @type {module:svgcanvas.ChangedIDs}\n   */\n  const changedIDs = {};\n\n  // Recursively replace IDs and record the changes\n  /**\n   *\n   * @param {module:svgcanvas.SVGAsJSON} elem\n   * @returns {undefined}\n   */\n  function checkIDs (elem) {\n    if (elem.attr && elem.attr.id) {\n      changedIDs[elem.attr.id] = getNextId();\n      elem.attr.id = changedIDs[elem.attr.id];\n    }\n    if (elem.children) elem.children.forEach(checkIDs);\n  }\n  clipb.forEach(checkIDs);\n\n  // Give extensions like the connector extension a chance to reflect new IDs and remove invalid elements\n  /**\n  * Triggered when `pasteElements` is called from a paste action (context menu or key)\n  * @event module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n  * @type {PlainObject}\n  * @property {module:svgcanvas.SVGAsJSON[]} elems\n  * @property {module:svgcanvas.ChangedIDs} changes Maps past ID (on attribute) to current ID\n  */\n  runExtensions(\n    'IDsUpdated',\n    /** @type {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} */\n    {elems: clipb, changes: changedIDs},\n    true\n  ).forEach(function (extChanges) {\n    if (!extChanges || !('remove' in extChanges)) return;\n\n    extChanges.remove.forEach(function (removeID) {\n      clipb = clipb.filter(function (clipBoardItem) {\n        return clipBoardItem.attr.id !== removeID;\n      });\n    });\n  });\n\n  // Move elements to lastClickPoint\n  while (len--) {\n    const elem = clipb[len];\n    if (!elem) { continue; }\n\n    const copy = addSVGElementFromJson(elem);\n    pasted.push(copy);\n    batchCmd.addSubCommand(new InsertElementCommand(copy));\n\n    restoreRefElems(copy);\n  }\n\n  selectOnly(pasted);\n\n  if (type !== 'in_place') {\n    let ctrX, ctrY;\n\n    if (!type) {\n      ctrX = lastClickPoint.x;\n      ctrY = lastClickPoint.y;\n    } else if (type === 'point') {\n      ctrX = x;\n      ctrY = y;\n    }\n\n    const bbox = getStrokedBBoxDefaultVisible(pasted);\n    const cx = ctrX - (bbox.x + bbox.width / 2),\n      cy = ctrY - (bbox.y + bbox.height / 2),\n      dx = [],\n      dy = [];\n\n    $.each(pasted, function (i, item) {\n      dx.push(cx);\n      dy.push(cy);\n    });\n\n    const cmd = canvas.moveSelectedElements(dx, dy, false);\n    if (cmd) batchCmd.addSubCommand(cmd);\n  }\n\n  addCommandToHistory(batchCmd);\n  call('changed', pasted);\n};\n\n/**\n* Wraps all the selected elements in a group (`g`) element.\n* @function module:svgcanvas.SvgCanvas#groupSelectedElements\n* @param {\"a\"|\"g\"} [type=\"g\"] - type of element to group into, defaults to `<g>`\n* @param {string} [urlArg]\n* @returns {undefined}\n*/\nthis.groupSelectedElements = function (type, urlArg) {\n  if (!type) { type = 'g'; }\n  let cmdStr = '';\n  let url;\n\n  switch (type) {\n  case 'a': {\n    cmdStr = 'Make hyperlink';\n    url = urlArg || '';\n    break;\n  } default: {\n    type = 'g';\n    cmdStr = 'Group Elements';\n    break;\n  }\n  }\n\n  const batchCmd = new BatchCommand(cmdStr);\n\n  // create and insert the group element\n  const g = addSVGElementFromJson({\n    element: type,\n    attr: {\n      id: getNextId()\n    }\n  });\n  if (type === 'a') {\n    setHref(g, url);\n  }\n  batchCmd.addSubCommand(new InsertElementCommand(g));\n\n  // now move all children into the group\n  let i = selectedElements.length;\n  while (i--) {\n    let elem = selectedElements[i];\n    if (isNullish(elem)) { continue; }\n\n    if (elem.parentNode.tagName === 'a' && elem.parentNode.childNodes.length === 1) {\n      elem = elem.parentNode;\n    }\n\n    const oldNextSibling = elem.nextSibling;\n    const oldParent = elem.parentNode;\n    g.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n  }\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n  // update selection\n  selectOnly([g], true);\n};\n\n/**\n* Pushes all appropriate parent group properties down to its children, then\n* removes them from the group.\n* @function module:svgcanvas.SvgCanvas#pushGroupProperties\n* @param {SVGAElement|SVGGElement} g\n* @param {boolean} undoable\n* @returns {BatchCommand|undefined}\n*/\nconst pushGroupProperties = this.pushGroupProperties = function (g, undoable) {\n  const children = g.childNodes;\n  const len = children.length;\n  const xform = g.getAttribute('transform');\n\n  const glist = getTransformList(g);\n  const m = transformListToTransform(glist).matrix;\n\n  const batchCmd = new BatchCommand('Push group properties');\n\n  // TODO: get all fill/stroke properties from the group that we are about to destroy\n  // \"fill\", \"fill-opacity\", \"fill-rule\", \"stroke\", \"stroke-dasharray\", \"stroke-dashoffset\",\n  // \"stroke-linecap\", \"stroke-linejoin\", \"stroke-miterlimit\", \"stroke-opacity\",\n  // \"stroke-width\"\n  // and then for each child, if they do not have the attribute (or the value is 'inherit')\n  // then set the child's attribute\n\n  const gangle = getRotationAngle(g);\n\n  const gattrs = $(g).attr(['filter', 'opacity']);\n  let gfilter, gblur, changes;\n  const drawing = getCurrentDrawing();\n\n  for (let i = 0; i < len; i++) {\n    const elem = children[i];\n\n    if (elem.nodeType !== 1) { continue; }\n\n    if (gattrs.opacity !== null && gattrs.opacity !== 1) {\n      // const c_opac = elem.getAttribute('opacity') || 1;\n      const newOpac = Math.round((elem.getAttribute('opacity') || 1) * gattrs.opacity * 100) / 100;\n      changeSelectedAttribute('opacity', newOpac, [elem]);\n    }\n\n    if (gattrs.filter) {\n      let cblur = this.getBlur(elem);\n      const origCblur = cblur;\n      if (!gblur) { gblur = this.getBlur(g); }\n      if (cblur) {\n        // Is this formula correct?\n        cblur = Number(gblur) + Number(cblur);\n      } else if (cblur === 0) {\n        cblur = gblur;\n      }\n\n      // If child has no current filter, get group's filter or clone it.\n      if (!origCblur) {\n        // Set group's filter to use first child's ID\n        if (!gfilter) {\n          gfilter = getRefElem(gattrs.filter);\n        } else {\n          // Clone the group's filter\n          gfilter = drawing.copyElem(gfilter);\n          findDefs().append(gfilter);\n        }\n      } else {\n        gfilter = getRefElem(elem.getAttribute('filter'));\n      }\n\n      // Change this in future for different filters\n      const suffix = (gfilter.firstChild.tagName === 'feGaussianBlur') ? 'blur' : 'filter';\n      gfilter.id = elem.id + '_' + suffix;\n      changeSelectedAttribute('filter', 'url(#' + gfilter.id + ')', [elem]);\n\n      // Update blur value\n      if (cblur) {\n        changeSelectedAttribute('stdDeviation', cblur, [gfilter.firstChild]);\n        canvas.setBlurOffsets(gfilter, cblur);\n      }\n    }\n\n    let chtlist = getTransformList(elem);\n\n    // Don't process gradient transforms\n    if (elem.tagName.includes('Gradient')) { chtlist = null; }\n\n    // Hopefully not a problem to add this. Necessary for elements like <desc/>\n    if (!chtlist) { continue; }\n\n    // Apparently <defs> can get get a transformlist, but we don't want it to have one!\n    if (elem.tagName === 'defs') { continue; }\n\n    if (glist.numberOfItems) {\n      // TODO: if the group's transform is just a rotate, we can always transfer the\n      // rotate() down to the children (collapsing consecutive rotates and factoring\n      // out any translates)\n      if (gangle && glist.numberOfItems === 1) {\n        // [Rg] [Rc] [Mc]\n        // we want [Tr] [Rc2] [Mc] where:\n        //  - [Rc2] is at the child's current center but has the\n        // sum of the group and child's rotation angles\n        //  - [Tr] is the equivalent translation that this child\n        // undergoes if the group wasn't there\n\n        // [Tr] = [Rg] [Rc] [Rc2_inv]\n\n        // get group's rotation matrix (Rg)\n        const rgm = glist.getItem(0).matrix;\n\n        // get child's rotation matrix (Rc)\n        let rcm = svgroot.createSVGMatrix();\n        const cangle = getRotationAngle(elem);\n        if (cangle) {\n          rcm = chtlist.getItem(0).matrix;\n        }\n\n        // get child's old center of rotation\n        const cbox = utilsGetBBox(elem);\n        const ceqm = transformListToTransform(chtlist).matrix;\n        const coldc = transformPoint(cbox.x + cbox.width / 2, cbox.y + cbox.height / 2, ceqm);\n\n        // sum group and child's angles\n        const sangle = gangle + cangle;\n\n        // get child's rotation at the old center (Rc2_inv)\n        const r2 = svgroot.createSVGTransform();\n        r2.setRotate(sangle, coldc.x, coldc.y);\n\n        // calculate equivalent translate\n        const trm = matrixMultiply(rgm, rcm, r2.matrix.inverse());\n\n        // set up tlist\n        if (cangle) {\n          chtlist.removeItem(0);\n        }\n\n        if (sangle) {\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(r2, 0);\n          } else {\n            chtlist.appendItem(r2);\n          }\n        }\n\n        if (trm.e || trm.f) {\n          const tr = svgroot.createSVGTransform();\n          tr.setTranslate(trm.e, trm.f);\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(tr, 0);\n          } else {\n            chtlist.appendItem(tr);\n          }\n        }\n      } else { // more complicated than just a rotate\n        // transfer the group's transform down to each child and then\n        // call recalculateDimensions()\n        const oldxform = elem.getAttribute('transform');\n        changes = {};\n        changes.transform = oldxform || '';\n\n        const newxform = svgroot.createSVGTransform();\n\n        // [ gm ] [ chm ] = [ chm ] [ gm' ]\n        // [ gm' ] = [ chmInv ] [ gm ] [ chm ]\n        const chm = transformListToTransform(chtlist).matrix,\n          chmInv = chm.inverse();\n        const gm = matrixMultiply(chmInv, m, chm);\n        newxform.setMatrix(gm);\n        chtlist.appendItem(newxform);\n      }\n      const cmd = recalculateDimensions(elem);\n      if (cmd) { batchCmd.addSubCommand(cmd); }\n    }\n  }\n\n  // remove transform and make it undo-able\n  if (xform) {\n    changes = {};\n    changes.transform = xform;\n    g.setAttribute('transform', '');\n    g.removeAttribute('transform');\n    batchCmd.addSubCommand(new ChangeElementCommand(g, changes));\n  }\n\n  if (undoable && !batchCmd.isEmpty()) {\n    return batchCmd;\n  }\n  return undefined;\n};\n\n/**\n* Unwraps all the elements in a selected group (`g`) element. This requires\n* significant recalculations to apply group's transforms, etc. to its children.\n* @function module:svgcanvas.SvgCanvas#ungroupSelectedElement\n* @returns {undefined}\n*/\nthis.ungroupSelectedElement = function () {\n  let g = selectedElements[0];\n  if (!g) {\n    return;\n  }\n  if ($(g).data('gsvg') || $(g).data('symbol')) {\n    // Is svg, so actually convert to group\n    convertToGroup(g);\n    return;\n  }\n  if (g.tagName === 'use') {\n    // Somehow doesn't have data set, so retrieve\n    const symbol = getElem(getHref(g).substr(1));\n    $(g).data('symbol', symbol).data('ref', symbol);\n    convertToGroup(g);\n    return;\n  }\n  const parentsA = $(g).parents('a');\n  if (parentsA.length) {\n    g = parentsA[0];\n  }\n\n  // Look for parent \"a\"\n  if (g.tagName === 'g' || g.tagName === 'a') {\n    const batchCmd = new BatchCommand('Ungroup Elements');\n    const cmd = pushGroupProperties(g, true);\n    if (cmd) { batchCmd.addSubCommand(cmd); }\n\n    const parent = g.parentNode;\n    const anchor = g.nextSibling;\n    const children = new Array(g.childNodes.length);\n\n    let i = 0;\n    while (g.firstChild) {\n      let elem = g.firstChild;\n      const oldNextSibling = elem.nextSibling;\n      const oldParent = elem.parentNode;\n\n      // Remove child title elements\n      if (elem.tagName === 'title') {\n        const {nextSibling} = elem;\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, oldParent));\n        elem.remove();\n        continue;\n      }\n\n      children[i++] = elem = parent.insertBefore(elem, anchor);\n      batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n    }\n\n    // remove the group from the selection\n    clearSelection();\n\n    // delete the group element (but make undo-able)\n    const gNextSibling = g.nextSibling;\n    g = parent.removeChild(g);\n    batchCmd.addSubCommand(new RemoveElementCommand(g, gNextSibling, parent));\n\n    if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n    // update selection\n    addToSelection(children);\n  }\n};\n\n/**\n* Repositions the selected element to the bottom in the DOM to appear on top of\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToTopSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToTopSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (!isNullish(selected)) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    t = t.parentNode.appendChild(t);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'top'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Repositions the selected element to the top in the DOM to appear under\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToBottomSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToBottomSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (!isNullish(selected)) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    let {firstChild} = t.parentNode;\n    if (firstChild.tagName === 'title') {\n      firstChild = firstChild.nextSibling;\n    }\n    // This can probably be removed, as the defs should not ever apppear\n    // inside a layer group\n    if (firstChild.tagName === 'defs') {\n      firstChild = firstChild.nextSibling;\n    }\n    t = t.parentNode.insertBefore(t, firstChild);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'bottom'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Moves the select element up or down the stack, based on the visibly\n* intersecting elements.\n* @function module:svgcanvas.SvgCanvas#moveUpDownSelected\n* @param {\"Up\"|\"Down\"} dir - String that's either 'Up' or 'Down'\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveUpDownSelected = function (dir) {\n  const selected = selectedElements[0];\n  if (!selected) { return; }\n\n  curBBoxes = [];\n  let closest, foundCur;\n  // jQuery sorts this list\n  const list = $(getIntersectionList(getStrokedBBoxDefaultVisible([selected]))).toArray();\n  if (dir === 'Down') { list.reverse(); }\n\n  $.each(list, function () {\n    if (!foundCur) {\n      if (this === selected) {\n        foundCur = true;\n      }\n      return true;\n    }\n    closest = this; // eslint-disable-line consistent-this\n    return false;\n  });\n  if (!closest) { return; }\n\n  const t = selected;\n  const oldParent = t.parentNode;\n  const oldNextSibling = t.nextSibling;\n  $(closest)[dir === 'Down' ? 'before' : 'after'](t);\n  // If the element actually moved position, add the command and fire the changed\n  // event handler.\n  if (oldNextSibling !== t.nextSibling) {\n    addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'Move ' + dir));\n    call('changed', [t]);\n  }\n};\n\n/**\n* Moves selected elements on the X/Y axis.\n* @function module:svgcanvas.SvgCanvas#moveSelectedElements\n* @param {Float} dx - Float with the distance to move on the x-axis\n* @param {Float} dy - Float with the distance to move on the y-axis\n* @param {boolean} undoable - Boolean indicating whether or not the action should be undoable\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {BatchCommand|undefined} Batch command for the move\n*/\nthis.moveSelectedElements = function (dx, dy, undoable) {\n  // if undoable is not sent, default to true\n  // if single values, scale them to the zoom\n  if (dx.constructor !== Array) {\n    dx /= currentZoom;\n    dy /= currentZoom;\n  }\n  undoable = undoable || true;\n  const batchCmd = new BatchCommand('position');\n  let i = selectedElements.length;\n  while (i--) {\n    const selected = selectedElements[i];\n    if (!isNullish(selected)) {\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(selected);\n      // }\n      // const b = {};\n      // for (const j in selectedBBoxes[i]) b[j] = selectedBBoxes[i][j];\n      // selectedBBoxes[i] = b;\n\n      const xform = svgroot.createSVGTransform();\n      const tlist = getTransformList(selected);\n\n      // dx and dy could be arrays\n      if (dx.constructor === Array) {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx[0];\n        //   selectedBBoxes[0].y += dy[0];\n        // }\n        xform.setTranslate(dx[i], dy[i]);\n      } else {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx;\n        //   selectedBBoxes[0].y += dy;\n        // }\n        xform.setTranslate(dx, dy);\n      }\n\n      if (tlist.numberOfItems) {\n        tlist.insertItemBefore(xform, 0);\n      } else {\n        tlist.appendItem(xform);\n      }\n\n      const cmd = recalculateDimensions(selected);\n      if (cmd) {\n        batchCmd.addSubCommand(cmd);\n      }\n\n      selectorManager.requestSelector(selected).resize();\n    }\n  }\n  if (!batchCmd.isEmpty()) {\n    if (undoable) {\n      addCommandToHistory(batchCmd);\n    }\n    call('changed', selectedElements);\n    return batchCmd;\n  }\n  return undefined;\n};\n\n/**\n* Create deep DOM copies (clones) of all selected elements and move them slightly\n* from their originals.\n* @function module:svgcanvas.SvgCanvas#cloneSelectedElements\n* @param {Float} x Float with the distance to move on the x-axis\n* @param {Float} y Float with the distance to move on the y-axis\n* @returns {undefined}\n*/\nthis.cloneSelectedElements = function (x, y) {\n  let i, elem;\n  const batchCmd = new BatchCommand('Clone Elements');\n  // find all the elements selected (stop at first null)\n  const len = selectedElements.length;\n  /**\n   * Sorts an array numerically and ascending.\n   * @param {Element} a\n   * @param {Element} b\n   * @returns {Integer}\n   */\n  function sortfunction (a, b) {\n    return ($(b).index() - $(a).index());\n  }\n  selectedElements.sort(sortfunction);\n  for (i = 0; i < len; ++i) {\n    elem = selectedElements[i];\n    if (isNullish(elem)) { break; }\n  }\n  // use slice to quickly get the subset of elements we need\n  const copiedElements = selectedElements.slice(0, i);\n  this.clearSelection(true);\n  // note that we loop in the reverse way because of the way elements are added\n  // to the selectedElements array (top-first)\n  const drawing = getCurrentDrawing();\n  i = copiedElements.length;\n  while (i--) {\n    // clone each element and replace it within copiedElements\n    elem = copiedElements[i] = drawing.copyElem(copiedElements[i]);\n    (currentGroup || drawing.getCurrentLayer()).append(elem);\n    batchCmd.addSubCommand(new InsertElementCommand(elem));\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addToSelection(copiedElements.reverse()); // Need to reverse for correct selection-adding\n    this.moveSelectedElements(x, y, false);\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Aligns selected elements.\n* @function module:svgcanvas.SvgCanvas#alignSelectedElements\n* @param {string} type - String with single character indicating the alignment type\n* @param {\"selected\"|\"largest\"|\"smallest\"|\"page\"} relativeTo\n* @returns {undefined}\n*/\nthis.alignSelectedElements = function (type, relativeTo) {\n  const bboxes = []; // angles = [];\n  const len = selectedElements.length;\n  if (!len) { return; }\n  let minx = Number.MAX_VALUE, maxx = Number.MIN_VALUE,\n    miny = Number.MAX_VALUE, maxy = Number.MIN_VALUE;\n  let curwidth = Number.MIN_VALUE, curheight = Number.MIN_VALUE;\n  for (let i = 0; i < len; ++i) {\n    if (isNullish(selectedElements[i])) { break; }\n    const elem = selectedElements[i];\n    bboxes[i] = getStrokedBBoxDefaultVisible([elem]);\n\n    // now bbox is axis-aligned and handles rotation\n    switch (relativeTo) {\n    case 'smallest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth > bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight > bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    case 'largest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth < bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight < bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    default: // 'selected'\n      if (bboxes[i].x < minx) { minx = bboxes[i].x; }\n      if (bboxes[i].y < miny) { miny = bboxes[i].y; }\n      if (bboxes[i].x + bboxes[i].width > maxx) { maxx = bboxes[i].x + bboxes[i].width; }\n      if (bboxes[i].y + bboxes[i].height > maxy) { maxy = bboxes[i].y + bboxes[i].height; }\n      break;\n    }\n  } // loop for each element to find the bbox and adjust min/max\n\n  if (relativeTo === 'page') {\n    minx = 0;\n    miny = 0;\n    maxx = canvas.contentW;\n    maxy = canvas.contentH;\n  }\n\n  const dx = new Array(len);\n  const dy = new Array(len);\n  for (let i = 0; i < len; ++i) {\n    if (isNullish(selectedElements[i])) { break; }\n    // const elem = selectedElements[i];\n    const bbox = bboxes[i];\n    dx[i] = 0;\n    dy[i] = 0;\n    switch (type) {\n    case 'l': // left (horizontal)\n      dx[i] = minx - bbox.x;\n      break;\n    case 'c': // center (horizontal)\n      dx[i] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);\n      break;\n    case 'r': // right (horizontal)\n      dx[i] = maxx - (bbox.x + bbox.width);\n      break;\n    case 't': // top (vertical)\n      dy[i] = miny - bbox.y;\n      break;\n    case 'm': // middle (vertical)\n      dy[i] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);\n      break;\n    case 'b': // bottom (vertical)\n      dy[i] = maxy - (bbox.y + bbox.height);\n      break;\n    }\n  }\n  this.moveSelectedElements(dx, dy);\n};\n\n/**\n* Group: Additional editor tools\n*/\n\n/**\n* @name module:svgcanvas.SvgCanvas#contentW\n* @type {Float}\n*/\nthis.contentW = getResolution().w;\n/**\n* @name module:svgcanvas.SvgCanvas#contentH\n* @type {Float}\n*/\nthis.contentH = getResolution().h;\n\n/**\n* @typedef {PlainObject} module:svgcanvas.CanvasInfo\n* @property {Float} x - The canvas' new x coordinate\n* @property {Float} y - The canvas' new y coordinate\n* @property {string} oldX - The canvas' old x coordinate\n* @property {string} oldY - The canvas' old y coordinate\n* @property {Float} d_x - The x position difference\n* @property {Float} d_y - The y position difference\n*/\n\n/**\n* Updates the editor canvas width/height/position after a zoom has occurred.\n* @function module:svgcanvas.SvgCanvas#updateCanvas\n* @param {Float} w - Float with the new width\n* @param {Float} h - Float with the new height\n* @fires module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n* @returns {module:svgcanvas.CanvasInfo}\n*/\nthis.updateCanvas = function (w, h) {\n  svgroot.setAttribute('width', w);\n  svgroot.setAttribute('height', h);\n  const bg = $('#canvasBackground')[0];\n  const oldX = svgcontent.getAttribute('x');\n  const oldY = svgcontent.getAttribute('y');\n  const x = ((w - this.contentW * currentZoom) / 2);\n  const y = ((h - this.contentH * currentZoom) / 2);\n\n  assignAttributes(svgcontent, {\n    width: this.contentW * currentZoom,\n    height: this.contentH * currentZoom,\n    x,\n    y,\n    viewBox: '0 0 ' + this.contentW + ' ' + this.contentH\n  });\n\n  assignAttributes(bg, {\n    width: svgcontent.getAttribute('width'),\n    height: svgcontent.getAttribute('height'),\n    x,\n    y\n  });\n\n  const bgImg = getElem('background_image');\n  if (bgImg) {\n    assignAttributes(bgImg, {\n      width: '100%',\n      height: '100%'\n    });\n  }\n\n  selectorManager.selectorParentGroup.setAttribute('transform', 'translate(' + x + ',' + y + ')');\n\n  /**\n  * Invoked upon updates to the canvas.\n  * @event module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n  * @type {PlainObject}\n  * @property {Integer} new_x\n  * @property {Integer} new_y\n  * @property {string} old_x (Of Integer)\n  * @property {string} old_y (Of Integer)\n  * @property {Integer} d_x\n  * @property {Integer} d_y\n  */\n  runExtensions(\n    'canvasUpdated',\n    /**\n     * @type {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated}\n     */\n    {new_x: x, new_y: y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY}\n  );\n  return {x, y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY};\n};\n\n/**\n* Set the background of the editor (NOT the actual document).\n* @function module:svgcanvas.SvgCanvas#setBackground\n* @param {string} color - String with fill color to apply\n* @param {string} url - URL or path to image to use\n* @returns {undefined}\n*/\nthis.setBackground = function (color, url) {\n  const bg = getElem('canvasBackground');\n  const border = $(bg).find('rect')[0];\n  let bgImg = getElem('background_image');\n  border.setAttribute('fill', color);\n  if (url) {\n    if (!bgImg) {\n      bgImg = svgdoc.createElementNS(NS.SVG, 'image');\n      assignAttributes(bgImg, {\n        id: 'background_image',\n        width: '100%',\n        height: '100%',\n        preserveAspectRatio: 'xMinYMin',\n        style: 'pointer-events:none'\n      });\n    }\n    setHref(bgImg, url);\n    bg.append(bgImg);\n  } else if (bgImg) {\n    bgImg.remove();\n  }\n};\n\n/**\n* Select the next/previous element within the current layer.\n* @function module:svgcanvas.SvgCanvas#cycleElement\n* @param {boolean} next - true = next and false = previous element\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nthis.cycleElement = function (next) {\n  let num;\n  const curElem = selectedElements[0];\n  let elem = false;\n  const allElems = getVisibleElements(currentGroup || getCurrentDrawing().getCurrentLayer());\n  if (!allElems.length) { return; }\n  if (isNullish(curElem)) {\n    num = next ? allElems.length - 1 : 0;\n    elem = allElems[num];\n  } else {\n    let i = allElems.length;\n    while (i--) {\n      if (allElems[i] === curElem) {\n        num = next ? i - 1 : i + 1;\n        if (num >= allElems.length) {\n          num = 0;\n        } else if (num < 0) {\n          num = allElems.length - 1;\n        }\n        elem = allElems[num];\n        break;\n      }\n    }\n  }\n  selectOnly([elem], true);\n  call('selected', selectedElements);\n};\n\nthis.clear();\n\n/**\n* @interface module:svgcanvas.PrivateMethods\n* @type {PlainObject}\n* @property {module:svgcanvas~addCommandToHistory} addCommandToHistory\n* @property {module:history.HistoryCommand} BatchCommand\n* @property {module:history.HistoryCommand} ChangeElementCommand\n* @property {module:utilities.decode64} decode64\n* @property {module:utilities.dropXMLInteralSubset} dropXMLInteralSubset\n* @property {module:utilities.encode64} encode64\n* @property {module:svgcanvas~ffClone} ffClone\n* @property {module:svgcanvas~findDuplicateGradient} findDuplicateGradient\n* @property {module:utilities.getPathBBox} getPathBBox\n* @property {module:units.getTypeMap} getTypeMap\n* @property {module:draw.identifyLayers} identifyLayers\n* @property {module:history.HistoryCommand} InsertElementCommand\n* @property {module:browser.isChrome} isChrome\n* @property {module:math.isIdentity} isIdentity\n* @property {module:browser.isIE} isIE\n* @property {module:svgcanvas~logMatrix} logMatrix\n* @property {module:history.HistoryCommand} MoveElementCommand\n* @property {module:namespaces.NS} NS\n* @property {module:utilities.preventClickDefault} preventClickDefault\n* @property {module:history.HistoryCommand} RemoveElementCommand\n* @property {module:SVGTransformList.SVGEditTransformList} SVGEditTransformList\n* @property {module:utilities.text2xml} text2xml\n* @property {module:math.transformBox} transformBox\n* @property {module:math.transformPoint} transformPoint\n* @property {module:utilities.walkTree} walkTree\n*/\n/**\n* @deprecated getPrivateMethods\n* Since all methods are/should be public somehow, this function should be removed;\n*  we might require `import` in place of this in the future once ES6 Modules\n*  widespread\n\n* Being able to access private methods publicly seems wrong somehow,\n* but currently appears to be the best way to allow testing and provide\n* access to them to plugins.\n* @function module:svgcanvas.SvgCanvas#getPrivateMethods\n* @returns {module:svgcanvas.PrivateMethods}\n*/\nthis.getPrivateMethods = function () {\n  const obj = {\n    addCommandToHistory,\n    BatchCommand,\n    ChangeElementCommand,\n    decode64,\n    dropXMLInteralSubset,\n    encode64,\n    ffClone,\n    findDefs,\n    findDuplicateGradient,\n    getElem,\n    getPathBBox,\n    getTypeMap,\n    getUrlFromAttr,\n    identifyLayers: draw.identifyLayers,\n    InsertElementCommand,\n    isChrome,\n    isIdentity,\n    isIE,\n    logMatrix,\n    MoveElementCommand,\n    NS,\n    preventClickDefault,\n    RemoveElementCommand,\n    SVGEditTransformList,\n    text2xml,\n    transformBox,\n    transformPoint,\n    walkTree\n  };\n  return obj;\n};\n  } // End constructor\n} // End class\n\nexport default SvgCanvas;\n","// Todo: Update: https://github.com/jeresig/jquery.hotkeys\n/*\n * jQuery Hotkeys Plugin\n * Copyright 2010, John Resig\n * Dual licensed under the MIT or GPL Version 2 licenses.\n *\n * http://github.com/jeresig/jquery.hotkeys\n *\n * Based upon the plugin by Tzury Bar Yochay:\n * http://github.com/tzuryby/hotkeys\n *\n * Original idea by:\n * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/\n*/\n\n// We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`\n\nexport default function(b){b.hotkeys={version:\"0.8\",specialKeys:{8:\"backspace\",9:\"tab\",13:\"return\",16:\"shift\",17:\"ctrl\",18:\"alt\",19:\"pause\",20:\"capslock\",27:\"esc\",32:\"space\",33:\"pageup\",34:\"pagedown\",35:\"end\",36:\"home\",37:\"left\",38:\"up\",39:\"right\",40:\"down\",45:\"insert\",46:\"del\",96:\"0\",97:\"1\",98:\"2\",99:\"3\",100:\"4\",101:\"5\",102:\"6\",103:\"7\",104:\"8\",105:\"9\",106:\"*\",107:\"+\",109:\"-\",110:\".\",111:\"/\",112:\"f1\",113:\"f2\",114:\"f3\",115:\"f4\",116:\"f5\",117:\"f6\",118:\"f7\",119:\"f8\",120:\"f9\",121:\"f10\",122:\"f11\",123:\"f12\",144:\"numlock\",145:\"scroll\",191:\"/\",224:\"meta\",219:\"[\",221:\"]\"},shiftNums:{\"`\":\"~\",\"1\":\"!\",\"2\":\"@\",\"3\":\"#\",\"4\":\"$\",\"5\":\"%\",\"6\":\"^\",\"7\":\"&\",\"8\":\"*\",\"9\":\"(\",\"0\":\")\",\"-\":\"_\",\"=\":\"+\",\";\":\": \",\"'\":'\"',\",\":\"<\",\".\":\">\",\"/\":\"?\",\"\\\\\":\"|\"}};function a(d){if(typeof d.data!==\"string\"){return}var c=d.handler,e=d.data.toLowerCase().split(\" \");d.handler=function(n){if(this!==n.target&&(n.which !== 27 && (/textarea|select/i.test(n.target.nodeName)||n.target.type===\"text\"))){return}var h=n.type!==\"keypress\"&&b.hotkeys.specialKeys[n.which],o=String.fromCharCode(n.which).toLowerCase(),k,m=\"\",g={};if(n.altKey&&h!==\"alt\"){m+=\"alt+\"}if(n.ctrlKey&&h!==\"ctrl\"){m+=\"ctrl+\"}if(n.metaKey&&!n.ctrlKey&&h!==\"meta\"){m+=\"meta+\"}if(n.shiftKey&&h!==\"shift\"){m+=\"shift+\"}if(h){g[m+h]=true}else{g[m+o]=true;g[m+b.hotkeys.shiftNums[o]]=true;if(m===\"shift+\"){g[b.hotkeys.shiftNums[o]]=true}}for(var j=0,f=e.length;j<f;j++){if(g[e[j]]){return c.apply(this,arguments)}}}}b.each([\"keydown\",\"keyup\",\"keypress\"],function(){b.event.special[this]={add:a}})\n\nreturn b;\n}\n","/*\n * Todo: Update to latest at https://github.com/cowboy/jquery-bbq ?\n * jQuery BBQ: Back Button & Query Library - v1.2.1 - 2/17/2010\n * http://benalman.com/projects/jquery-bbq-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n\n// For sake of modules, added this wrapping export and changed `this` to `window`\nexport default function (jQuery) {\n\n(function($,p){var i,m=Array.prototype.slice,r=decodeURIComponent,a=$.param,c,l,v,b=$.bbq=$.bbq||{},q,u,j,e=$.event.special,d=\"hashchange\",A=\"querystring\",D=\"fragment\",y=\"elemUrlAttr\",g=\"location\",k=\"href\",t=\"src\",x=/^.*\\?|#.*$/g,w=/^.*\\#/,h,C={};function E(F){return typeof F===\"string\"}function B(G){var F=m.call(arguments,1);return function(){return G.apply(this,F.concat(m.call(arguments)))}}function n(F){return F.replace(/^[^#]*#?(.*)$/,\"$1\")}function o(F){return F.replace(/(?:^[^?#]*\\?([^#]*).*$)?.*/,\"$1\")}function f(H,M,F,I,G){var O,L,K,N,J;if(I!==i){K=F.match(H?/^([^#]*)\\#?(.*)$/:/^([^#?]*)\\??([^#]*)(#?.*)/);J=K[3]||\"\";if(G===2&&E(I)){L=I.replace(H?w:x,\"\")}else{N=l(K[2]);I=E(I)?l[H?D:A](I):I;L=G===2?I:G===1?$.extend({},I,N):$.extend({},N,I);L=a(L);if(H){L=L.replace(h,r)}}O=K[1]+(H?\"#\":L||!K[1]?\"?\":\"\")+L+J}else{O=M(F!==i?F:p[g][k])}return O}a[A]=B(f,0,o);a[D]=c=B(f,1,n);c.noEscape=function(G){G=G||\"\";var F=$.map(G.split(\"\"),encodeURIComponent);h=new RegExp(F.join(\"|\"),\"g\")};c.noEscape(\",/\");$.deparam=l=function(I,F){var H={},G={\"true\":!0,\"false\":!1,\"null\":null};$.each(I.replace(/\\+/g,\" \").split(\"&\"),function(L,Q){var K=Q.split(\"=\"),P=r(K[0]),J,O=H,M=0,R=P.split(\"][\"),N=R.length-1;if(/\\[/.test(R[0])&&/\\]$/.test(R[N])){R[N]=R[N].replace(/\\]$/,\"\");R=R.shift().split(\"[\").concat(R);N=R.length-1}else{N=0}if(K.length===2){J=r(K[1]);if(F){J=J&&!isNaN(J)?+J:J===\"undefined\"?i:G[J]!==i?G[J]:J}if(N){for(;M<=N;M++){P=R[M]===\"\"?O.length:R[M];O=O[P]=M<N?O[P]||(R[M+1]&&isNaN(R[M+1])?{}:[]):J}}else{if($.isArray(H[P])){H[P].push(J)}else{if(H[P]!==i){H[P]=[H[P],J]}else{H[P]=J}}}}else{if(P){H[P]=F?i:\"\"}}});return H};function z(H,F,G){if(F===i||typeof F===\"boolean\"){G=F;F=a[H?D:A]()}else{F=E(F)?F.replace(H?w:x,\"\"):F}return l(F,G)}l[A]=B(z,0);l[D]=v=B(z,1);$[y]||($[y]=function(F){return $.extend(C,F)})({a:k,base:k,iframe:t,img:t,input:t,form:\"action\",link:k,script:t});j=$[y];function s(I,G,H,F){if(!E(H)&&typeof H!==\"object\"){F=H;H=G;G=i}return this.each(function(){var L=$(this),J=G||j()[(this.nodeName||\"\").toLowerCase()]||\"\",K=J&&L.attr(J)||\"\";L.attr(J,a[I](K,H,F))})}$.fn[A]=B(s,A);$.fn[D]=B(s,D);b.pushState=q=function(I,F){if(E(I)&&/^#/.test(I)&&F===i){F=2}var H=I!==i,G=c(p[g][k],H?I:{},H?F:2);p[g][k]=G+(/#/.test(G)?\"\":\"#\")};b.getState=u=function(F,G){return F===i||typeof F===\"boolean\"?v(F):v(G)[F]};b.removeState=function(F){var G={};if(F!==i){G=u();$.each($.isArray(F)?F:arguments,function(I,H){delete G[H]})}q(G,2)};e[d]=$.extend(e[d],{add:function(F){var H;function G(J){var I=J[D]=c();J.getState=function(K,L){return K===i||typeof K===\"boolean\"?l(I,K):l(I,L)[K]};H.apply(this,arguments)}if($.isFunction(F)){H=F;return G}else{H=F.handler;F.handler=G}}})})(jQuery,window);\n/*\n * jQuery hashchange event - v1.2 - 2/11/2010\n * http://benalman.com/projects/jquery-hashchange-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n(function($,i,b){var j,k=$.event.special,c=\"location\",d=\"hashchange\",l=\"href\",f=$.browser,g=document.documentMode,h=f.msie&&(g===b||g<8),e=\"on\"+d in i&&!h;function a(m){m=m||i[c][l];return m.replace(/^[^#]*#?(.*)$/,\"$1\")}$[d+\"Delay\"]=100;k[d]=$.extend(k[d],{setup:function(){if(e){return false}$(j.start)},teardown:function(){if(e){return false}$(j.stop)}});j=(function(){var m={},r,n,o,q;function p(){o=q=function(s){return s};if(h){n=$('<iframe src=\"javascript:0\"/>').hide().insertAfter(\"body\")[0].contentWindow;q=function(){return a(n.document[c][l])};o=function(u,s){if(u!==s){var t=n.document;t.open().close();t[c].hash=\"#\"+u}};o(a())}}m.start=function(){if(r){return}var t=a();o||p();(function s(){var v=a(),u=q(t);if(v!==t){o(t=v,u);$(i).trigger(d)}else{if(u!==t){i[c][l]=i[c][l].replace(/#.*/,\"\")+\"#\"+u}}r=setTimeout(s,$[d+\"Delay\"])})()};m.stop=function(){if(!n){r&&clearTimeout(r);r=0}};return m})()})(jQuery,window);\n\nreturn jQuery;\n}\n","// Todo: Move to own module (and have it import a modular base64 encoder)\nimport {encode64} from '../utilities.js';\n/**\n * SVG Icon Loader 2.0\n *\n * jQuery Plugin for loading SVG icons from a single file\n *\n * Adds {@link external:jQuery.svgIcons}, {@link external:jQuery.getSvgIcon}, {@link external:jQuery.resizeSvgIcons}\n *\n * How to use:\n\n1. Create the SVG master file that includes all icons:\n\nThe master SVG icon-containing file is an SVG file that contains\n`<g>` elements. Each `<g>` element should contain the markup of an SVG\nicon. The `<g>` element has an ID that should\ncorrespond with the ID of the HTML element used on the page that should contain\nor optionally be replaced by the icon. Additionally, one empty element should be\nadded at the end with id \"svg_eof\".\n\n2. Optionally create fallback raster images for each SVG icon.\n\n3. Include the jQuery and the SVG Icon Loader scripts on your page.\n\n4. Run `$.svgIcons()` when the document is ready. See its signature\n\n5. To access an icon at a later point without using the callback, use this:\n  `$.getSvgIcon(id (string), uniqueClone (boolean))`;\n\nThis will return the icon (as jQuery object) with a given ID.\n\n6. To resize icons at a later point without using the callback, use this:\n  `$.resizeSvgIcons(resizeOptions)` (use the same way as the \"resize\" parameter)\n *\n * @module jQuerySVGIcons\n * @license MIT\n * @copyright (c) 2009 Alexis Deveria\n * {@link http://a.deveria.com}\n * @example usage #1:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg'); // The SVG file that contains all icons\n  // No options have been set, so all icons will automatically be inserted\n  // into HTML elements that match the same IDs.\n});\n\n* @example usage #2:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg', { // The SVG file that contains all icons\n    callback (icons) { // Custom callback function that sets click\n                  // events for each icon\n      $.each(icons, function(id, icon) {\n        icon.click(function() {\n          alert('You clicked on the icon with id ' + id);\n        });\n      });\n    }\n  }); //The SVG file that contains all icons\n});\n\n* @example usage #3:\n\n$(function() {\n  $.svgIcons('my_icon_set.svgz', { // The SVGZ file that contains all icons\n    w: 32,  // All icons will be 32px wide\n    h: 32,  // All icons will be 32px high\n    fallback_path: 'icons/',  // All fallback files can be found here\n    fallback: {\n      '#open_icon': 'open.png',  // The \"open.png\" will be appended to the\n                    // HTML element with ID \"open_icon\"\n      '#close_icon': 'close.png',\n      '#save_icon': 'save.png'\n    },\n    placement: {'.open_icon','open'}, // The \"open\" icon will be added\n                    // to all elements with class \"open_icon\"\n    resize () {\n      '#save_icon .svg_icon': 64  // The \"save\" icon will be resized to 64 x 64px\n    },\n\n    callback (icons) { // Sets background color for \"close\" icon\n      icons['close'].css('background','red');\n    },\n\n    svgz: true // Indicates that an SVGZ file is being used\n\n  })\n});\n*/\n\n/**\n* @callback module:jQuerySVGIcons.SVGIconsLoadedCallback\n* @param {PlainObject.<string, external:jQuery>} svgIcons IDs keyed to jQuery objects of images\n*/\n\n/**\n * @function module:jQuerySVGIcons.jQuerySVGIcons\n * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object\n * @returns {external:jQuery} The enhanced jQuery object\n*/\nexport default function jQueryPluginSVGIcons ($) {\n  const svgIcons = {};\n\n  let fixIDs;\n  /**\n   * List of raster images with each\n   * key being the SVG icon ID to replace, and the value the image file name\n   * @typedef {PlainObject.<string, string>} external:jQuery.svgIcons.Fallback\n  */\n  /**\n  * @function external:jQuery.svgIcons\n  * @param {string} file The location of a local SVG or SVGz file\n  * @param {PlainObject} [opts]\n  * @param {Float} [opts.w] The icon widths\n  * @param {Float} [opts.h] The icon heights\n  * @param {external:jQuery.svgIcons.Fallback} [opts.fallback]\n  * @param {string} [opts.fallback_path] The path to use for all images\n    listed under \"fallback\"\n  * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,\n    rather than include the SVG icon.\n  * @param {PlainObject.<string, string>} [opts.placement] List with selectors for keys and SVG icon ids\n    as values. This provides a custom method of adding icons.\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} [opts.resize] List with selectors for keys and numbers\n    as values. This allows an easy way to resize specific icons.\n  * @param {module:jQuerySVGIcons.SVGIconsLoadedCallback} [opts.callback] A function to call when all icons have been loaded.\n  * @param {boolean} [opts.id_match=true] Automatically attempt to match SVG icon ids with\n    corresponding HTML id\n  * @param {boolean} [opts.no_img] Prevent attempting to convert the icon into an `<img>`\n    element (may be faster, help for browser consistency)\n  * @param {boolean} [opts.svgz] Indicate that the file is an SVGZ file, and thus not to\n    parse as XML. SVGZ files add compression benefits, but getting data from\n    them fails in Firefox 2 and older.\n  * @returns {undefined}\n  */\n  $.svgIcons = function (file, opts = {}) {\n    const svgns = 'http://www.w3.org/2000/svg',\n      xlinkns = 'http://www.w3.org/1999/xlink',\n      iconW = opts.w || 24,\n      iconH = opts.h || 24;\n    let elems, svgdoc, testImg,\n      iconsMade = false,\n      dataLoaded = false,\n      loadAttempts = 0;\n    const isOpera = Boolean(window.opera),\n      // ua = navigator.userAgent,\n      // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),\n      dataPre = 'data:image/svg+xml;charset=utf-8;base64,';\n\n    let dataEl;\n    if (opts.svgz) {\n      dataEl = $('<object data=\"' + file + '\" type=image/svg+xml>').appendTo('body').hide();\n      try {\n        svgdoc = dataEl[0].contentDocument;\n        dataEl.load(getIcons);\n        getIcons(0, true); // Opera will not run \"load\" event if file is already cached\n      } catch (err1) {\n        useFallback();\n      }\n    } else {\n      const parser = new DOMParser();\n      $.ajax({\n        url: file,\n        dataType: 'string',\n        success (data) {\n          if (!data) {\n            $(useFallback);\n            return;\n          }\n          svgdoc = parser.parseFromString(data, 'text/xml');\n          $(function () {\n            getIcons('ajax');\n          });\n        },\n        error (err) {\n          // TODO: Fix Opera widget icon bug\n          if (window.opera) {\n            $(function () {\n              useFallback();\n            });\n          } else if (err.responseText) {\n            svgdoc = parser.parseFromString(err.responseText, 'text/xml');\n\n            if (!svgdoc.childNodes.length) {\n              $(useFallback);\n            }\n            $(function () {\n              getIcons('ajax');\n            });\n          } else {\n            $(useFallback);\n          }\n        }\n      });\n    }\n\n    /**\n     *\n     * @param {\"ajax\"|0|undefined} evt\n     * @param {boolean} [noWait]\n     * @returns {undefined}\n     */\n    function getIcons (evt, noWait) {\n      if (evt !== 'ajax') {\n        if (dataLoaded) return;\n        // Webkit sometimes says svgdoc is undefined, other times\n        // it fails to load all nodes. Thus we must make sure the \"eof\"\n        // element is loaded.\n        svgdoc = dataEl[0].contentDocument; // Needed again for Webkit\n        const isReady = (svgdoc && svgdoc.getElementById('svg_eof'));\n        if (!isReady && !(noWait && isReady)) {\n          loadAttempts++;\n          if (loadAttempts < 50) {\n            setTimeout(getIcons, 20);\n          } else {\n            useFallback();\n            dataLoaded = true;\n          }\n          return;\n        }\n        dataLoaded = true;\n      }\n\n      elems = $(svgdoc.firstChild).children(); // .getElementsByTagName('foreignContent');\n\n      if (!opts.no_img) {\n        const testSrc = dataPre + 'PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzUiIGhlaWdodD0iMjc1Ij48L3N2Zz4%3D';\n\n        testImg = $(new Image()).attr({\n          src: testSrc,\n          width: 0,\n          height: 0\n        }).appendTo('body')\n          .load(function () {\n            // Safari 4 crashes, Opera and Chrome don't\n            makeIcons(true);\n          }).error(function () {\n            makeIcons();\n          });\n      } else {\n        setTimeout(function () {\n          if (!iconsMade) makeIcons();\n        }, 500);\n      }\n    }\n\n    /**\n     *\n     * @param {external:jQuery} target\n     * @param {external:jQuery} icon A wrapped `defs` or Image\n     * @param {string} id SVG icon ID\n     * @param {string} setID\n     * @returns {undefined}\n     */\n    function setIcon (target, icon, id, setID) {\n      if (isOpera) icon.css('visibility', 'hidden');\n      if (opts.replace) {\n        if (setID) icon.attr('id', id);\n        const cl = target.attr('class');\n        if (cl) icon.attr('class', 'svg_icon ' + cl);\n        target.replaceWith(icon);\n      } else {\n        target.append(icon);\n      }\n      if (isOpera) {\n        setTimeout(function () {\n          icon.removeAttr('style');\n        }, 1);\n      }\n    }\n\n    let holder;\n    /**\n     * @param {external:jQuery} icon A wrapped `defs` or Image\n     * @param {string} id SVG icon ID\n     * @returns {undefined}\n     */\n    function addIcon (icon, id) {\n      if (opts.id_match === undefined || opts.id_match !== false) {\n        setIcon(holder, icon, id, true);\n      }\n      svgIcons[id] = icon;\n    }\n\n    /**\n     *\n     * @param {boolean} [toImage]\n     * @param {external:jQuery.svgIcons.Fallback} [fallback]\n     * @returns {undefined}\n     */\n    function makeIcons (toImage = false, fallback) {\n      if (iconsMade) return;\n      if (opts.no_img) toImage = false;\n\n      let tempHolder;\n      if (toImage) {\n        tempHolder = $(document.createElement('div'));\n        tempHolder.hide().appendTo('body');\n      }\n      if (fallback) {\n        const path = opts.fallback_path || '';\n        $.each(fallback, function (id, imgsrc) {\n          holder = $('#' + id);\n          const icon = $(new Image())\n            .attr({\n              class: 'svg_icon',\n              src: path + imgsrc,\n              width: iconW,\n              height: iconH,\n              alt: 'icon'\n            });\n\n          addIcon(icon, id);\n        });\n      } else {\n        const len = elems.length;\n        for (let i = 0; i < len; i++) {\n          const elem = elems[i];\n          const {id} = elem;\n          if (id === 'svg_eof') break;\n          holder = $('#' + id);\n          const svgroot = document.createElementNS(svgns, 'svg');\n          // Per https://www.w3.org/TR/xml-names11/#defaulting, the namespace for\n          // attributes should have no value.\n          svgroot.setAttribute('viewBox', [0, 0, iconW, iconH].join(' '));\n\n          let svg = elem.getElementsByTagNameNS(svgns, 'svg')[0];\n\n          // Make flexible by converting width/height to viewBox\n          const w = svg.getAttribute('width');\n          const h = svg.getAttribute('height');\n          svg.removeAttribute('width');\n          svg.removeAttribute('height');\n\n          const vb = svg.getAttribute('viewBox');\n          if (!vb) {\n            svg.setAttribute('viewBox', [0, 0, w, h].join(' '));\n          }\n\n          // Not using jQuery to be a bit faster\n          svgroot.setAttribute('xmlns', svgns);\n          svgroot.setAttribute('width', iconW);\n          svgroot.setAttribute('height', iconH);\n          svgroot.setAttribute('xmlns:xlink', xlinkns);\n          svgroot.setAttribute('class', 'svg_icon');\n\n          // Without cloning, Firefox will make another GET request.\n          // With cloning, causes issue in Opera/Win/Non-EN\n          if (!isOpera) svg = svg.cloneNode(true);\n\n          svgroot.append(svg);\n\n          let icon;\n          if (toImage) {\n            tempHolder.empty().append(svgroot);\n            const str = dataPre + encode64(unescape(encodeURIComponent(new XMLSerializer().serializeToString(svgroot))));\n            icon = $(new Image())\n              .attr({class: 'svg_icon', src: str});\n          } else {\n            icon = fixIDs($(svgroot), i);\n          }\n          addIcon(icon, id);\n        }\n      }\n\n      if (opts.placement) {\n        $.each(opts.placement, function (sel, id) {\n          if (!svgIcons[id]) return;\n          $(sel).each(function (i) {\n            let copy = svgIcons[id].clone();\n            if (i > 0 && !toImage) copy = fixIDs(copy, i, true);\n            setIcon($(this), copy, id);\n          });\n        });\n      }\n      if (!fallback) {\n        if (toImage) tempHolder.remove();\n        if (dataEl) dataEl.remove();\n        if (testImg) testImg.remove();\n      }\n      if (opts.resize) $.resizeSvgIcons(opts.resize);\n      iconsMade = true;\n\n      if (opts.callback) opts.callback(svgIcons);\n    }\n\n    fixIDs = function (svgEl, svgNum, force) {\n      const defs = svgEl.find('defs');\n      if (!defs.length) return svgEl;\n\n      let idElems;\n      if (isOpera) {\n        idElems = defs.find('*').filter(function () {\n          return Boolean(this.id);\n        });\n      } else {\n        idElems = defs.find('[id]');\n      }\n\n      const allElems = svgEl[0].getElementsByTagName('*'),\n        len = allElems.length;\n\n      idElems.each(function (i) {\n        const {id} = this;\n        /*\n        const noDupes = ($(svgdoc).find('#' + id).length <= 1);\n        if (isOpera) noDupes = false; // Opera didn't clone svgEl, so not reliable\n        if(!force && noDupes) return;\n        */\n        const newId = 'x' + id + svgNum + i;\n        this.id = newId;\n\n        const oldVal = 'url(#' + id + ')';\n        const newVal = 'url(#' + newId + ')';\n\n        // Selector method, possibly faster but fails in Opera / jQuery 1.4.3\n        //  svgEl.find('[fill=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('fill', 'url(#' + newId + ')');\n        //  }).end().find('[stroke=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('stroke', 'url(#' + newId + ')');\n        //  }).end().find('use').each(function() {\n        //    if(this.getAttribute('xlink:href') == '#' + id) {\n        //      this.setAttributeNS(xlinkns,'href','#' + newId);\n        //    }\n        //  }).end().find('[filter=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('filter', 'url(#' + newId + ')');\n        //  });\n\n        for (i = 0; i < len; i++) {\n          const elem = allElems[i];\n          if (elem.getAttribute('fill') === oldVal) {\n            elem.setAttribute('fill', newVal);\n          }\n          if (elem.getAttribute('stroke') === oldVal) {\n            elem.setAttribute('stroke', newVal);\n          }\n          if (elem.getAttribute('filter') === oldVal) {\n            elem.setAttribute('filter', newVal);\n          }\n        }\n      });\n      return svgEl;\n    };\n\n    /**\n     * @returns {undefined}\n     */\n    function useFallback () {\n      if (file.includes('.svgz')) {\n        const regFile = file.replace('.svgz', '.svg');\n        if (window.console) {\n          console.log('.svgz failed, trying with .svg'); // eslint-disable-line no-console\n        }\n        $.svgIcons(regFile, opts);\n      } else if (opts.fallback) {\n        makeIcons(false, opts.fallback);\n      }\n    }\n  };\n\n  /**\n  * @function external:jQuery.getSvgIcon\n  * @param {string} id\n  * @param {boolean} uniqueClone Whether to clone\n  * @returns {external:jQuery} The icon (optionally cloned)\n  */\n  $.getSvgIcon = function (id, uniqueClone) {\n    let icon = svgIcons[id];\n    if (uniqueClone && icon) {\n      icon = fixIDs(icon, 0, true).clone(true);\n    }\n    return icon;\n  };\n\n  /**\n  * @typedef {GenericArray} module:jQuerySVGIcons.Dimensions\n  * @property {Integer} length 2\n  * @property {Float} 0 Width\n  * @property {Float} 1 Height\n  */\n\n  /**\n  * If a Float is used, it will represent width and height. Arrays contain the width and height.\n  * @typedef {module:jQuerySVGIcons.Dimensions|Float} module:jQuerySVGIcons.Size\n  */\n\n  /**\n  * @function external:jQuery.resizeSvgIcons\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} obj Object with selectors as keys. The values are sizes.\n  * @returns {undefined}\n  */\n  $.resizeSvgIcons = function (obj) {\n    // FF2 and older don't detect .svg_icon, so we change it detect svg elems instead\n    const changeSel = !$('.svg_icon:first').length;\n    $.each(obj, function (sel, size) {\n      const arr = Array.isArray(size);\n      const w = arr ? size[0] : size,\n        h = arr ? size[1] : size;\n      if (changeSel) {\n        sel = sel.replace(/\\.svg_icon/g, 'svg');\n      }\n      $(sel).each(function () {\n        this.setAttribute('width', w);\n        this.setAttribute('height', h);\n        if (window.opera && window.widget) {\n          this.parentNode.style.width = w + 'px';\n          this.parentNode.style.height = h + 'px';\n        }\n      });\n    });\n  };\n  return $;\n}\n","/**\n * jGraduate 0.4\n *\n * jQuery Plugin for a gradient picker\n *\n * @module jGraduate\n * @copyright 2010 Jeff Schiller {@link http://blog.codedread.com/}, 2010 Alexis Deveria {@link http://a.deveria.com/}\n *\n * @license Apache-2.0\n * @example\n * // The Paint object is described below.\n * $.jGraduate.Paint() // constructs a 'none' color\n * @example $.jGraduate.Paint({copy: o}) // creates a copy of the paint o\n * @example $.jGraduate.Paint({hex: '#rrggbb'}) // creates a solid color paint with hex = \"#rrggbb\"\n * @example $.jGraduate.Paint({linearGradient: o, a: 50}) // creates a linear gradient paint with opacity=0.5\n * @example $.jGraduate.Paint({radialGradient: o, a: 7}) // creates a radial gradient paint with opacity=0.07\n * @example $.jGraduate.Paint({hex: '#rrggbb', linearGradient: o}) // throws an exception?\n *\n*/\n\n/**\n  * The jQuery namespace.\n  * @external jQuery\n*/\n/**\n * The jQuery plugin namespace.\n * @namespace {PlainObject} fn\n * @memberof external:jQuery\n * @see {@link http://learn.jquery.com/plugins/|jQuery Plugins}\n */\n\nconst ns = {\n  svg: 'http://www.w3.org/2000/svg',\n  xlink: 'http://www.w3.org/1999/xlink'\n};\n\nif (!window.console) {\n  window.console = {\n    log (str) { /* */ },\n    dir (str) { /* */ }\n  };\n}\n\n/**\n* Adds {@link external:jQuery.jGraduate.Paint},\n* {@link external:jQuery.fn.jGraduateDefaults},\n* {@link external:jQuery.fn.jGraduate}.\n* @function module:jGraduate.jGraduate\n* @param {external:jQuery} $ The jQuery instance to wrap\n* @returns {external:jQuery}\n*/\nexport default function jQueryPluginJGraduate ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jGraduate.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.jGraduatePaintOptions\n  * @param {Float} [alpha]\n  * @param {module:jGraduate~Paint} [copy] Copy paint object\n  * @param {SVGLinearGradientElement} [linearGradient]\n  * @param {SVGRadialGradientElement} [radialGradient]\n  * @param {string} [solidColor]\n  */\n\n  /**\n  * @memberof module:jGraduate~\n  */\n  class Paint {\n    /**\n     * @param {module:jGraduate.jGraduatePaintOptions} [opt]\n    */\n    constructor (opt) {\n      const options = opt || {};\n      this.alpha = isNaN(options.alpha) ? 100 : options.alpha;\n      // copy paint object\n      if (options.copy) {\n        /**\n         * @name module:jGraduate~Paint#type\n         * @type {\"none\"|\"solidColor\"|\"linearGradient\"|\"radialGradient\"}\n         */\n        this.type = options.copy.type;\n        /**\n         * Represents opacity (0-100)\n         * @name module:jGraduate~Paint#alpha\n         * @type {Float}\n         */\n        this.alpha = options.copy.alpha;\n        /**\n         * Represents #RRGGBB hex of color\n         * @name module:jGraduate~Paint#solidColor\n         * @type {string}\n         */\n        this.solidColor = null;\n        /**\n         * @name module:jGraduate~Paint#linearGradient\n         * @type {SVGLinearGradientElement}\n         */\n        this.linearGradient = null;\n        /**\n         * @name module:jGraduate~Paint#radialGradient\n         * @type {SVGRadialGradientElement}\n         */\n        this.radialGradient = null;\n\n        switch (this.type) {\n        case 'none':\n          break;\n        case 'solidColor':\n          this.solidColor = options.copy.solidColor;\n          break;\n        case 'linearGradient':\n          this.linearGradient = options.copy.linearGradient.cloneNode(true);\n          break;\n        case 'radialGradient':\n          this.radialGradient = options.copy.radialGradient.cloneNode(true);\n          break;\n        }\n      // create linear gradient paint\n      } else if (options.linearGradient) {\n        this.type = 'linearGradient';\n        this.solidColor = null;\n        this.radialGradient = null;\n        this.linearGradient = options.linearGradient.cloneNode(true);\n      // create linear gradient paint\n      } else if (options.radialGradient) {\n        this.type = 'radialGradient';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = options.radialGradient.cloneNode(true);\n      // create solid color paint\n      } else if (options.solidColor) {\n        this.type = 'solidColor';\n        this.solidColor = options.solidColor;\n      // create empty paint\n      } else {\n        this.type = 'none';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = null;\n      }\n    }\n  }\n  /**\n  * @namespace {PlainObject} jGraduate\n  * @memberof external:jQuery\n  */\n  $.jGraduate = /** @lends external:jQuery.jGraduate */ {\n    /**\n    * @class external:jQuery.jGraduate.Paint\n    * @see module:jGraduate~Paint\n    */\n    Paint\n  };\n\n  // JSDoc doesn't show this as belonging to our `module:jGraduate.Options` type,\n  //   so we use `@see`\n  /**\n  * @namespace {module:jGraduate.Options} jGraduateDefaults\n  * @memberof external:jQuery.fn\n  */\n  $.fn.jGraduateDefaults = /** @lends external:jQuery.fn.jGraduateDefaults */ {\n    /**\n    * Creates an object with a 'none' color\n    * @type {external:jQuery.jGraduate.Paint}\n    * @see module:jGraduate.Options\n    */\n    paint: new $.jGraduate.Paint(),\n    /**\n    * @namespace\n    */\n    window: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      pickerTitle: 'Drag markers to pick a paint'\n    },\n    /**\n    * @namespace\n    */\n    images: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      clientPath: 'images/'\n    },\n    /**\n    * @type {string}\n    * @see module:jGraduate.Options\n    */\n    newstop: 'inverse' // same, inverse, black, white\n  };\n\n  const isGecko = navigator.userAgent.includes('Gecko/');\n\n  /**\n  * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs\n  */\n  /**\n  * @param {SVGElement} elem\n  * @param {module:jGraduate.Attrs} attrs\n  * @returns {undefined}\n  */\n  function setAttrs (elem, attrs) {\n    if (isGecko) {\n      Object.entries(attrs).forEach(([aname, val]) => {\n        elem.setAttribute(aname, val);\n      });\n    } else {\n      Object.entries(attrs).forEach(([aname, val]) => {\n        const prop = elem[aname];\n        if (prop && prop.constructor === 'SVGLength') {\n          prop.baseVal.value = val;\n        } else {\n          elem.setAttribute(aname, val);\n        }\n      });\n    }\n  }\n\n  /**\n  * @param {string} name\n  * @param {module:jGraduate.Attrs} attrs\n  * @param {Element} newparent\n  * @returns {SVGElement}\n  */\n  function mkElem (name, attrs, newparent) {\n    const elem = document.createElementNS(ns.svg, name);\n    setAttrs(elem, attrs);\n    if (newparent) {\n      newparent.append(elem);\n    }\n    return elem;\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.ColorOpac Object may have one or both values\n  * @property {string} [color] #Hex color\n  * @property {Float} [opac] 0-1\n  */\n  /**\n  * @typedef {PlainObject} module:jGraduate.Options\n  * @property {module:jGraduate~Paint} [paint] A Paint object object describing the paint to display initially; defaults to a new instance without options (defaults to opaque white)\n  * @property {external:Window} [window]\n  * @property {string} [window.pickerTitle='Drag markers to pick a paint']\n  * @property {PlainObject} [images]\n  * @property {string} [images.clientPath='images/']\n  * @property {\"same\"|\"inverse\"|\"black\"|\"white\"|module:jGraduate.ColorOpac} [newstop=\"inverse\"]\n  */\n\n  /**\n  * @callback external:jQuery.fn.jGraduate.OkCallback\n  * @param {external:jQuery.jGraduate.Paint} paint\n  * @returns {undefined}\n  */\n  /**\n  * @callback external:jQuery.fn.jGraduate.CancelCallback\n  * @returns {undefined}\n  */\n\n  /**\n  * @function external:jQuery.fn.jGraduate\n  * @param {module:jGraduate.Options} [options]\n  * @param {external:jQuery.fn.jGraduate.OkCallback} [okCallback] Called with a Paint object when Ok is pressed\n  * @param {external:jQuery.fn.jGraduate.CancelCallback} [cancelCallback] Called with no arguments when Cancel is pressed\n  * @returns {external:jQuery}\n  */\n  $.fn.jGraduate = function (options, okCallback, cancelCallback) {\n    return this.each(function () {\n      const $this = $(this),\n        $settings = $.extend(true, {}, $.fn.jGraduateDefaults, options || {}),\n        id = $this.attr('id'),\n        idref = '#' + $this.attr('id') + ' ';\n\n      if (!idref) {\n        /* await */ $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');\n        return;\n      }\n\n      const okClicked = function () {\n        switch ($this.paint.type) {\n        case 'radialGradient':\n          $this.paint.linearGradient = null;\n          break;\n        case 'linearGradient':\n          $this.paint.radialGradient = null;\n          break;\n        case 'solidColor':\n          $this.paint.radialGradient = $this.paint.linearGradient = null;\n          break;\n        }\n        typeof $this.okCallback === 'function' && $this.okCallback($this.paint);\n        $this.hide();\n      };\n      const cancelClicked = function () {\n        typeof $this.cancelCallback === 'function' && $this.cancelCallback();\n        $this.hide();\n      };\n\n      $.extend(true, $this, { // public properties, methods, and callbacks\n        // make a copy of the incoming paint\n        paint: new $.jGraduate.Paint({copy: $settings.paint}),\n        okCallback: typeof okCallback === 'function' ? okCallback : null,\n        cancelCallback: typeof cancelCallback === 'function' ? cancelCallback : null\n      });\n\n      let // pos = $this.position(),\n        color = null;\n      const $win = $(window);\n\n      if ($this.paint.type === 'none') {\n        $this.paint = new $.jGraduate.Paint({solidColor: 'ffffff'});\n      }\n\n      $this.addClass('jGraduate_Picker');\n      $this.html(\n        '<ul class=\"jGraduate_tabs\">' +\n          '<li class=\"jGraduate_tab_color jGraduate_tab_current\" data-type=\"col\">Solid Color</li>' +\n          '<li class=\"jGraduate_tab_lingrad\" data-type=\"lg\">Linear Gradient</li>' +\n          '<li class=\"jGraduate_tab_radgrad\" data-type=\"rg\">Radial Gradient</li>' +\n        '</ul>' +\n        '<div class=\"jGraduate_colPick\"></div>' +\n        '<div class=\"jGraduate_gradPick\"></div>' +\n        '<div class=\"jGraduate_LightBox\"></div>' +\n        '<div id=\"' + id + '_jGraduate_stopPicker\" class=\"jGraduate_stopPicker\"></div>'\n      );\n      const colPicker = $(idref + '> .jGraduate_colPick');\n      const gradPicker = $(idref + '> .jGraduate_gradPick');\n\n      gradPicker.html(\n        '<div id=\"' + id + '_jGraduate_Swatch\" class=\"jGraduate_Swatch\">' +\n          '<h2 class=\"jGraduate_Title\">' + $settings.window.pickerTitle + '</h2>' +\n          '<div id=\"' + id + '_jGraduate_GradContainer\" class=\"jGraduate_GradContainer\"></div>' +\n          '<div id=\"' + id + '_jGraduate_StopSlider\" class=\"jGraduate_StopSlider\"></div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_lg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Begin Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x1\" size=\"3\" title=\"Enter starting x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y1\" size=\"3\" title=\"Enter starting y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">End Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x2\" size=\"3\" title=\"Enter ending x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y2\" size=\"3\" title=\"Enter ending y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_rg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Center Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Focal Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>Match center: <input type=\"checkbox\" checked=\"checked\" id=\"' + id + '_jGraduate_match_ctr\"/></label><br/>' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_StopSection jGraduate_SpreadMethod\">' +\n          '<label class=\"jGraduate_Form_Heading\">Spread method</label>' +\n          '<div class=\"jGraduate_Form_Section\">' +\n            '<select class=\"jGraduate_spreadMethod\">' +\n              '<option value=pad selected>Pad</option>' +\n              '<option value=reflect>Reflect</option>' +\n              '<option value=repeat>Repeat</option>' +\n            '</select>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form\">' +\n          '<div class=\"jGraduate_Slider jGraduate_RadiusField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Radius:</label>' +\n            '<div id=\"' + id + '_jGraduate_Radius\" class=\"jGraduate_SliderBar jGraduate_Radius\" title=\"Click to set radius\">' +\n              '<img id=\"' + id + '_jGraduate_RadiusArrows\" class=\"jGraduate_RadiusArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_RadiusInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_EllipField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Ellip:</label>' +\n            '<div id=\"' + id + '_jGraduate_Ellip\" class=\"jGraduate_SliderBar jGraduate_Ellip\" title=\"Click to set Ellip\">' +\n              '<img id=\"' + id + '_jGraduate_EllipArrows\" class=\"jGraduate_EllipArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_EllipInput\" size=\"3\" value=\"0\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_AngleField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Angle:</label>' +\n            '<div id=\"' + id + '_jGraduate_Angle\" class=\"jGraduate_SliderBar jGraduate_Angle\" title=\"Click to set Angle\">' +\n              '<img id=\"' + id + '_jGraduate_AngleArrows\" class=\"jGraduate_AngleArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_AngleInput\" size=\"3\" value=\"0\"/>deg</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_OpacField\">' +\n            '<label class=\"prelabel\">Opac:</label>' +\n            '<div id=\"' + id + '_jGraduate_Opac\" class=\"jGraduate_SliderBar jGraduate_Opac\" title=\"Click to set Opac\">' +\n              '<img id=\"' + id + '_jGraduate_OpacArrows\" class=\"jGraduate_OpacArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_OpacInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_OkCancel\">' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Ok\" class=\"jGraduate_Ok\" value=\"OK\"/>' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Cancel\" class=\"jGraduate_Cancel\" value=\"Cancel\"/>' +\n        '</div>'\n      );\n\n      // --------------\n      // Set up all the SVG elements (the gradient, stops and rectangle)\n      const MAX = 256,\n        MARGINX = 0,\n        MARGINY = 0,\n        // STOP_RADIUS = 15 / 2,\n        SIZEX = MAX - 2 * MARGINX,\n        SIZEY = MAX - 2 * MARGINY;\n\n      const attrInput = {};\n\n      const SLIDERW = 145;\n      $('.jGraduate_SliderBar').width(SLIDERW);\n\n      const container = $('#' + id + '_jGraduate_GradContainer')[0];\n\n      const svg = mkElem('svg', {\n        id: id + '_jgraduate_svg',\n        width: MAX,\n        height: MAX,\n        xmlns: ns.svg\n      }, container);\n\n      // This wasn't working as designed\n      // let curType;\n      // curType = curType || $this.paint.type;\n\n      // if we are sent a gradient, import it\n      let curType = $this.paint.type;\n\n      let grad = $this.paint[curType];\n      let curGradient = grad;\n\n      const gradalpha = $this.paint.alpha;\n\n      const isSolid = curType === 'solidColor';\n\n      // Make any missing gradients\n      switch (curType) {\n      case 'solidColor':\n        // fall through\n      case 'linearGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_lg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('radialGradient', {\n          id: id + '_rg_jgraduate_grad'\n        }, svg);\n        if (curType === 'linearGradient') { break; }\n        // fall through\n      case 'radialGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_rg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('linearGradient', {\n          id: id + '_lg_jgraduate_grad'\n        }, svg);\n      }\n\n      let stopGroup; // eslint-disable-line prefer-const\n      if (isSolid) {\n        grad = curGradient = $('#' + id + '_lg_jgraduate_grad')[0];\n        color = $this.paint[curType];\n        mkStop(0, '#' + color, 1);\n\n        const type = typeof $settings.newstop;\n\n        if (type === 'string') {\n          switch ($settings.newstop) {\n          case 'same':\n            mkStop(1, '#' + color, 1);\n            break;\n\n          case 'inverse': {\n            // Invert current color for second stop\n            let inverted = '';\n            for (let i = 0; i < 6; i += 2) {\n              // const ch = color.substr(i, 2);\n              let inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);\n              if (inv.length < 2) inv = 0 + inv;\n              inverted += inv;\n            }\n            mkStop(1, '#' + inverted, 1);\n            break;\n          } case 'white':\n            mkStop(1, '#ffffff', 1);\n            break;\n\n          case 'black':\n            mkStop(1, '#000000', 1);\n            break;\n          }\n        } else if (type === 'object') {\n          const opac = ('opac' in $settings.newstop) ? $settings.newstop.opac : 1;\n          mkStop(1, ($settings.newstop.color || '#' + color), opac);\n        }\n      }\n\n      const x1 = parseFloat(grad.getAttribute('x1') || 0.0),\n        y1 = parseFloat(grad.getAttribute('y1') || 0.0),\n        x2 = parseFloat(grad.getAttribute('x2') || 1.0),\n        y2 = parseFloat(grad.getAttribute('y2') || 0.0);\n\n      const cx = parseFloat(grad.getAttribute('cx') || 0.5),\n        cy = parseFloat(grad.getAttribute('cy') || 0.5),\n        fx = parseFloat(grad.getAttribute('fx') || cx),\n        fy = parseFloat(grad.getAttribute('fy') || cy);\n\n      const previewRect = mkElem('rect', {\n        id: id + '_jgraduate_rect',\n        x: MARGINX,\n        y: MARGINY,\n        width: SIZEX,\n        height: SIZEY,\n        fill: 'url(#' + id + '_jgraduate_grad)',\n        'fill-opacity': gradalpha / 100\n      }, svg);\n\n      // stop visuals created here\n      const beginCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_lg_field',\n        title: 'Begin Stop'\n      }).text(1).css({\n        top: y1 * MAX,\n        left: x1 * MAX\n      }).data('coord', 'start').appendTo(container);\n\n      const endCoord = beginCoord.clone().text(2).css({\n        top: y2 * MAX,\n        left: x2 * MAX\n      }).attr('title', 'End stop').data('coord', 'end').appendTo(container);\n\n      const centerCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_rg_field',\n        title: 'Center stop'\n      }).text('C').css({\n        top: cy * MAX,\n        left: cx * MAX\n      }).data('coord', 'center').appendTo(container);\n\n      const focusCoord = centerCoord.clone().text('F').css({\n        top: fy * MAX,\n        left: fx * MAX,\n        display: 'none'\n      }).attr('title', 'Focus point').data('coord', 'focus').appendTo(container);\n\n      focusCoord[0].id = id + '_jGraduate_focusCoord';\n\n      // const coords = $(idref + ' .grad_coord');\n\n      // $(container).hover(function () {\n      //   coords.animate({\n      //     opacity: 1\n      //   }, 500);\n      // }, function () {\n      //   coords.animate({\n      //     opacity: .2\n      //   }, 500);\n      // });\n\n      let showFocus;\n      $.each(['x1', 'y1', 'x2', 'y2', 'cx', 'cy', 'fx', 'fy'], function (i, attr) {\n        const isRadial = isNaN(attr[1]);\n\n        let attrval = curGradient.getAttribute(attr);\n        if (!attrval) {\n          // Set defaults\n          if (isRadial) {\n            // For radial points\n            attrval = '0.5';\n          } else {\n            // Only x2 is 1\n            attrval = attr === 'x2' ? '1.0' : '0.0';\n          }\n        }\n\n        attrInput[attr] = $('#' + id + '_jGraduate_' + attr)\n          .val(attrval)\n          .change(function () {\n            // TODO: Support values < 0 and > 1 (zoomable preview?)\n            if (isNaN(parseFloat(this.value)) || this.value < 0) {\n              this.value = 0.0;\n            } else if (this.value > 1) {\n              this.value = 1.0;\n            }\n\n            if (!(attr[0] === 'f' && !showFocus)) {\n              if ((isRadial && curType === 'radialGradient') || (!isRadial && curType === 'linearGradient')) {\n                curGradient.setAttribute(attr, this.value);\n              }\n            }\n\n            const $elem = isRadial\n              ? attr[0] === 'c' ? centerCoord : focusCoord\n              : attr[1] === '1' ? beginCoord : endCoord;\n\n            const cssName = attr.includes('x') ? 'left' : 'top';\n\n            $elem.css(cssName, this.value * MAX);\n          }).change();\n      });\n\n      /**\n       *\n       * @param {Float} n\n       * @param {Float|string} colr\n       * @param {Float} opac\n       * @param {boolean} [sel]\n       * @param {SVGStopElement} [stopElem]\n       * @returns {SVGStopElement}\n       */\n      function mkStop (n, colr, opac, sel, stopElem) {\n        const stop = stopElem || mkElem('stop', {\n          'stop-color': colr,\n          'stop-opacity': opac,\n          offset: n\n        }, curGradient);\n        if (stopElem) {\n          colr = stopElem.getAttribute('stop-color');\n          opac = stopElem.getAttribute('stop-opacity');\n          n = stopElem.getAttribute('offset');\n        } else {\n          curGradient.append(stop);\n        }\n        if (opac === null) opac = 1;\n\n        const pickerD = 'M-6.2,0.9c3.6-4,6.7-4.3,6.7-12.4c-0.2,7.9,3.1,8.8,6.5,12.4c3.5,3.8,2.9,9.6,0,12.3c-3.1,2.8-10.4,2.7-13.2,0C-9.6,9.9-9.4,4.4-6.2,0.9z';\n\n        const pathbg = mkElem('path', {\n          d: pickerD,\n          fill: 'url(#jGraduate_trans)',\n          transform: 'translate(' + (10 + n * MAX) + ', 26)'\n        }, stopGroup);\n\n        const path = mkElem('path', {\n          d: pickerD,\n          fill: colr,\n          'fill-opacity': opac,\n          transform: 'translate(' + (10 + n * MAX) + ', 26)',\n          stroke: '#000',\n          'stroke-width': 1.5\n        }, stopGroup);\n\n        $(path).mousedown(function (e) {\n          selectStop(this);\n          drag = curStop;\n          $win.mousemove(dragColor).mouseup(remDrags);\n          stopOffset = stopMakerDiv.offset();\n          e.preventDefault();\n          return false;\n        }).data('stop', stop).data('bg', pathbg).dblclick(function () {\n          $('div.jGraduate_LightBox').show();\n          const colorhandle = this; // eslint-disable-line consistent-this\n          let stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;\n          let stopColor = stop.getAttribute('stop-color') || 1;\n          let thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);\n          while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n          colr = stopColor.substr(1) + thisAlpha;\n          $('#' + id + '_jGraduate_stopPicker').css({left: 100, bottom: 15}).jPicker({\n            window: {title: 'Pick the start color and opacity for the gradient'},\n            images: {clientPath: $settings.images.clientPath},\n            color: {active: colr, alphaSupport: true}\n          }, function (clr, arg2) {\n            stopColor = clr.val('hex') ? ('#' + clr.val('hex')) : 'none';\n            stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;\n            colorhandle.setAttribute('fill', stopColor);\n            colorhandle.setAttribute('fill-opacity', stopOpacity);\n            stop.setAttribute('stop-color', stopColor);\n            stop.setAttribute('stop-opacity', stopOpacity);\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          }, null, function () {\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          });\n        });\n\n        $(curGradient).find('stop').each(function () {\n          const curS = $(this);\n          if (Number(this.getAttribute('offset')) > n) {\n            if (!colr) {\n              const newcolor = this.getAttribute('stop-color');\n              const newopac = this.getAttribute('stop-opacity');\n              stop.setAttribute('stop-color', newcolor);\n              path.setAttribute('fill', newcolor);\n              stop.setAttribute('stop-opacity', newopac === null ? 1 : newopac);\n              path.setAttribute('fill-opacity', newopac === null ? 1 : newopac);\n            }\n            curS.before(stop);\n            return false;\n          }\n          return true;\n        });\n        if (sel) selectStop(path);\n        return stop;\n      }\n\n      /**\n      *\n      * @returns {undefined}\n      */\n      function remStop () {\n        delStop.setAttribute('display', 'none');\n        const path = $(curStop);\n        const stop = path.data('stop');\n        const bg = path.data('bg');\n        $([curStop, stop, bg]).remove();\n      }\n\n      const stopMakerDiv = $('#' + id + '_jGraduate_StopSlider');\n\n      let stops, curStop, drag;\n\n      const delStop = mkElem('path', {\n        d: 'm9.75,-6l-19.5,19.5m0,-19.5l19.5,19.5',\n        fill: 'none',\n        stroke: '#D00',\n        'stroke-width': 5,\n        display: 'none'\n      }, undefined); // stopMakerSVG);\n\n      /**\n      * @param {Element} item\n      * @returns {undefined}\n      */\n      function selectStop (item) {\n        if (curStop) curStop.setAttribute('stroke', '#000');\n        item.setAttribute('stroke', 'blue');\n        curStop = item;\n        curStop.parentNode.append(curStop);\n        //   stops = $('stop');\n        //   opac_select.val(curStop.attr('fill-opacity') || 1);\n        //   root.append(delStop);\n      }\n\n      let stopOffset;\n\n      /**\n      *\n      * @returns {undefined}\n      */\n      function remDrags () {\n        $win.unbind('mousemove', dragColor);\n        if (delStop.getAttribute('display') !== 'none') {\n          remStop();\n        }\n        drag = null;\n      }\n\n      let scaleX = 1, scaleY = 1, angle = 0;\n\n      let cX = cx;\n      let cY = cy;\n      /**\n      *\n      * @returns {undefined}\n      */\n      function xform () {\n        const rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';\n        if (scaleX === 1 && scaleY === 1) {\n          curGradient.removeAttribute('gradientTransform');\n          // $('#ang').addClass('dis');\n        } else {\n          const x = -cX * (scaleX - 1);\n          const y = -cY * (scaleY - 1);\n          curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')');\n          // $('#ang').removeClass('dis');\n        }\n      }\n\n      /**\n      * @param {Event} evt\n      * @returns {undefined}\n      */\n      function dragColor (evt) {\n        let x = evt.pageX - stopOffset.left;\n        const y = evt.pageY - stopOffset.top;\n        x = x < 10\n          ? 10\n          : x > MAX + 10\n            ? MAX + 10\n            : x;\n\n        const xfStr = 'translate(' + x + ', 26)';\n        if (y < -60 || y > 130) {\n          delStop.setAttribute('display', 'block');\n          delStop.setAttribute('transform', xfStr);\n        } else {\n          delStop.setAttribute('display', 'none');\n        }\n\n        drag.setAttribute('transform', xfStr);\n        $.data(drag, 'bg').setAttribute('transform', xfStr);\n        const stop = $.data(drag, 'stop');\n        const sX = (x - 10) / MAX;\n\n        stop.setAttribute('offset', sX);\n\n        let last = 0;\n        $(curGradient).find('stop').each(function (i) {\n          const cur = this.getAttribute('offset');\n          const t = $(this);\n          if (cur < last) {\n            t.prev().before(t);\n            stops = $(curGradient).find('stop');\n          }\n          last = cur;\n        });\n      }\n\n      const stopMakerSVG = mkElem('svg', {\n        width: '100%',\n        height: 45\n      }, stopMakerDiv[0]);\n\n      const transPattern = mkElem('pattern', {\n        width: 16,\n        height: 16,\n        patternUnits: 'userSpaceOnUse',\n        id: 'jGraduate_trans'\n      }, stopMakerSVG);\n\n      const transImg = mkElem('image', {\n        width: 16,\n        height: 16\n      }, transPattern);\n\n      const bgImage = $settings.images.clientPath + 'map-opacity.png';\n\n      transImg.setAttributeNS(ns.xlink, 'xlink:href', bgImage);\n\n      $(stopMakerSVG).click(function (evt) {\n        stopOffset = stopMakerDiv.offset();\n        const {target} = evt;\n        if (target.tagName === 'path') return;\n        let x = evt.pageX - stopOffset.left - 8;\n        x = x < 10 ? 10 : x > MAX + 10 ? MAX + 10 : x;\n        mkStop(x / MAX, 0, 0, true);\n        evt.stopPropagation();\n      });\n\n      $(stopMakerSVG).mouseover(function () {\n        stopMakerSVG.append(delStop);\n      });\n\n      stopGroup = mkElem('g', {}, stopMakerSVG);\n\n      mkElem('line', {\n        x1: 10,\n        y1: 15,\n        x2: MAX + 10,\n        y2: 15,\n        'stroke-width': 2,\n        stroke: '#000'\n      }, stopMakerSVG);\n\n      const spreadMethodOpt = gradPicker.find('.jGraduate_spreadMethod').change(function () {\n        curGradient.setAttribute('spreadMethod', $(this).val());\n      });\n\n      // handle dragging the stop around the swatch\n      let draggingCoord = null;\n\n      const onCoordDrag = function (evt) {\n        let x = evt.pageX - offset.left;\n        let y = evt.pageY - offset.top;\n\n        // clamp stop to the swatch\n        x = x < 0 ? 0 : x > MAX ? MAX : x;\n        y = y < 0 ? 0 : y > MAX ? MAX : y;\n\n        draggingCoord.css('left', x).css('top', y);\n\n        // calculate stop offset\n        const fracx = x / SIZEX;\n        const fracy = y / SIZEY;\n\n        const type = draggingCoord.data('coord');\n        const grd = curGradient;\n\n        switch (type) {\n        case 'start':\n          attrInput.x1.val(fracx);\n          attrInput.y1.val(fracy);\n          grd.setAttribute('x1', fracx);\n          grd.setAttribute('y1', fracy);\n          break;\n        case 'end':\n          attrInput.x2.val(fracx);\n          attrInput.y2.val(fracy);\n          grd.setAttribute('x2', fracx);\n          grd.setAttribute('y2', fracy);\n          break;\n        case 'center':\n          attrInput.cx.val(fracx);\n          attrInput.cy.val(fracy);\n          grd.setAttribute('cx', fracx);\n          grd.setAttribute('cy', fracy);\n          cX = fracx;\n          cY = fracy;\n          xform();\n          break;\n        case 'focus':\n          attrInput.fx.val(fracx);\n          attrInput.fy.val(fracy);\n          grd.setAttribute('fx', fracx);\n          grd.setAttribute('fy', fracy);\n          xform();\n        }\n\n        evt.preventDefault();\n      };\n\n      const onCoordUp = function () {\n        draggingCoord = null;\n        $win.unbind('mousemove', onCoordDrag).unbind('mouseup', onCoordUp);\n      };\n\n      // Linear gradient\n      // (function () {\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n\n      let numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      for (let i = 0; i < numstops; i++) {\n        mkStop(0, 0, 0, 0, stops[i]);\n      }\n\n      spreadMethodOpt.val(curGradient.getAttribute('spreadMethod') || 'pad');\n\n      let offset;\n\n      // No match, so show focus point\n      showFocus = false;\n\n      previewRect.setAttribute('fill-opacity', gradalpha / 100);\n\n      $('#' + id + ' div.grad_coord').mousedown(function (evt) {\n        evt.preventDefault();\n        draggingCoord = $(this);\n        // const sPos = draggingCoord.offset();\n        offset = draggingCoord.parent().offset();\n        $win.mousemove(onCoordDrag).mouseup(onCoordUp);\n      });\n\n      // bind GUI elements\n      $('#' + id + '_jGraduate_Ok').bind('click', function () {\n        $this.paint.type = curType;\n        $this.paint[curType] = curGradient.cloneNode(true);\n        $this.paint.solidColor = null;\n        okClicked();\n      });\n      $('#' + id + '_jGraduate_Cancel').bind('click', function (paint) {\n        cancelClicked();\n      });\n\n      if (curType === 'radialGradient') {\n        if (showFocus) {\n          focusCoord.show();\n        } else {\n          focusCoord.hide();\n          attrInput.fx.val('');\n          attrInput.fy.val('');\n        }\n      }\n\n      $('#' + id + '_jGraduate_match_ctr')[0].checked = !showFocus;\n\n      let lastfx, lastfy;\n\n      $('#' + id + '_jGraduate_match_ctr').change(function () {\n        showFocus = !this.checked;\n        focusCoord.toggle(showFocus);\n        attrInput.fx.val('');\n        attrInput.fy.val('');\n        const grd = curGradient;\n        if (!showFocus) {\n          lastfx = grd.getAttribute('fx');\n          lastfy = grd.getAttribute('fy');\n          grd.removeAttribute('fx');\n          grd.removeAttribute('fy');\n        } else {\n          const fX = lastfx || 0.5;\n          const fY = lastfy || 0.5;\n          grd.setAttribute('fx', fX);\n          grd.setAttribute('fy', fY);\n          attrInput.fx.val(fX);\n          attrInput.fy.val(fY);\n        }\n      });\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      let slider;\n\n      const setSlider = function (e) {\n        const {offset: {left}} = slider;\n        const div = slider.parent;\n        let x = (e.pageX - left - parseInt(div.css('border-left-width')));\n        if (x > SLIDERW) x = SLIDERW;\n        if (x <= 0) x = 0;\n        const posx = x - 5;\n        x /= SLIDERW;\n\n        switch (slider.type) {\n        case 'radius':\n          x = Math.pow(x * 2, 2.5);\n          if (x > 0.98 && x < 1.02) x = 1;\n          if (x <= 0.01) x = 0.01;\n          curGradient.setAttribute('r', x);\n          break;\n        case 'opacity':\n          $this.paint.alpha = parseInt(x * 100);\n          previewRect.setAttribute('fill-opacity', x);\n          break;\n        case 'ellip':\n          scaleX = 1;\n          scaleY = 1;\n          if (x < 0.5) {\n            x /= 0.5; // 0.001\n            scaleX = x <= 0 ? 0.01 : x;\n          } else if (x > 0.5) {\n            x /= 0.5; // 2\n            x = 2 - x;\n            scaleY = x <= 0 ? 0.01 : x;\n          }\n          xform();\n          x -= 1;\n          if (scaleY === x + 1) {\n            x = Math.abs(x);\n          }\n          break;\n        case 'angle':\n          x -= 0.5;\n          angle = x *= 180;\n          xform();\n          x /= 100;\n          break;\n        }\n        slider.elem.css({'margin-left': posx});\n        x = Math.round(x * 100);\n        slider.input.val(x);\n      };\n\n      let ellipVal = 0, angleVal = 0;\n\n      if (curType === 'radialGradient') {\n        const tlist = curGradient.gradientTransform.baseVal;\n        if (tlist.numberOfItems === 2) {\n          const t = tlist.getItem(0);\n          const s = tlist.getItem(1);\n          if (t.type === 2 && s.type === 3) {\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        } else if (tlist.numberOfItems === 3) {\n          // Assume [R][T][S]\n          const r = tlist.getItem(0);\n          const t = tlist.getItem(1);\n          const s = tlist.getItem(2);\n\n          if (r.type === 4 &&\n            t.type === 2 &&\n            s.type === 3\n          ) {\n            angleVal = Math.round(r.angle);\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        }\n      }\n\n      const sliders = {\n        radius: {\n          handle: '#' + id + '_jGraduate_RadiusArrows',\n          input: '#' + id + '_jGraduate_RadiusInput',\n          val: (curGradient.getAttribute('r') || 0.5) * 100\n        },\n        opacity: {\n          handle: '#' + id + '_jGraduate_OpacArrows',\n          input: '#' + id + '_jGraduate_OpacInput',\n          val: $this.paint.alpha || 100\n        },\n        ellip: {\n          handle: '#' + id + '_jGraduate_EllipArrows',\n          input: '#' + id + '_jGraduate_EllipInput',\n          val: ellipVal\n        },\n        angle: {\n          handle: '#' + id + '_jGraduate_AngleArrows',\n          input: '#' + id + '_jGraduate_AngleInput',\n          val: angleVal\n        }\n      };\n\n      $.each(sliders, function (type, data) {\n        const handle = $(data.handle);\n        handle.mousedown(function (evt) {\n          const parent = handle.parent();\n          slider = {\n            type,\n            elem: handle,\n            input: $(data.input),\n            parent,\n            offset: parent.offset()\n          };\n          $win.mousemove(dragSlider).mouseup(stopSlider);\n          evt.preventDefault();\n        });\n\n        $(data.input).val(data.val).change(function () {\n          const isRad = curType === 'radialGradient';\n          let val = Number(this.value);\n          let xpos = 0;\n          switch (type) {\n          case 'radius':\n            if (isRad) curGradient.setAttribute('r', val / 100);\n            xpos = (Math.pow(val / 100, 1 / 2.5) / 2) * SLIDERW;\n            break;\n\n          case 'opacity':\n            $this.paint.alpha = val;\n            previewRect.setAttribute('fill-opacity', val / 100);\n            xpos = val * (SLIDERW / 100);\n            break;\n\n          case 'ellip':\n            scaleX = scaleY = 1;\n            if (val === 0) {\n              xpos = SLIDERW * 0.5;\n              break;\n            }\n            if (val > 99.5) val = 99.5;\n            if (val > 0) {\n              scaleY = 1 - (val / 100);\n            } else {\n              scaleX = -(val / 100) - 1;\n            }\n\n            xpos = SLIDERW * ((val + 100) / 2) / 100;\n            if (isRad) xform();\n            break;\n\n          case 'angle':\n            angle = val;\n            xpos = angle / 180;\n            xpos += 0.5;\n            xpos *= SLIDERW;\n            if (isRad) xform();\n          }\n          if (xpos > SLIDERW) {\n            xpos = SLIDERW;\n          } else if (xpos < 0) {\n            xpos = 0;\n          }\n          handle.css({'margin-left': xpos - 5});\n        }).change();\n      });\n\n      const dragSlider = function (evt) {\n        setSlider(evt);\n        evt.preventDefault();\n      };\n\n      const stopSlider = function (evt) {\n        $win.unbind('mousemove', dragSlider).unbind('mouseup', stopSlider);\n        slider = null;\n      };\n\n      // --------------\n      let thisAlpha = ($this.paint.alpha * 255 / 100).toString(16);\n      while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n      thisAlpha = thisAlpha.split('.')[0];\n      color = $this.paint.solidColor === 'none' ? '' : $this.paint.solidColor + thisAlpha;\n\n      if (!isSolid) {\n        color = stops[0].getAttribute('stop-color');\n      }\n\n      // This should be done somewhere else, probably\n      $.extend($.fn.jPicker.defaults.window, {\n        alphaSupport: true, effects: {type: 'show', speed: 0}\n      });\n\n      colPicker.jPicker(\n        {\n          window: {title: $settings.window.pickerTitle},\n          images: {clientPath: $settings.images.clientPath},\n          color: {active: color, alphaSupport: true}\n        },\n        function (clr) {\n          $this.paint.type = 'solidColor';\n          $this.paint.alpha = clr.val('ahex') ? Math.round((clr.val('a') / 255) * 100) : 100;\n          $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';\n          $this.paint.radialGradient = null;\n          okClicked();\n        },\n        null,\n        function () { cancelClicked(); }\n      );\n\n      const tabs = $(idref + ' .jGraduate_tabs li');\n      tabs.click(function () {\n        tabs.removeClass('jGraduate_tab_current');\n        $(this).addClass('jGraduate_tab_current');\n        $(idref + ' > div').hide();\n        const type = $(this).attr('data-type');\n        /* const container = */ $(idref + ' .jGraduate_gradPick').show();\n        if (type === 'rg' || type === 'lg') {\n          // Show/hide appropriate fields\n          $('.jGraduate_' + type + '_field').show();\n          $('.jGraduate_' + (type === 'lg' ? 'rg' : 'lg') + '_field').hide();\n\n          $('#' + id + '_jgraduate_rect')[0].setAttribute('fill', 'url(#' + id + '_' + type + '_jgraduate_grad)');\n\n          // Copy stops\n\n          curType = type === 'lg' ? 'linearGradient' : 'radialGradient';\n\n          $('#' + id + '_jGraduate_OpacInput').val($this.paint.alpha).change();\n\n          const newGrad = $('#' + id + '_' + type + '_jgraduate_grad')[0];\n\n          if (curGradient !== newGrad) {\n            const curStops = $(curGradient).find('stop');\n            $(newGrad).empty().append(curStops);\n            curGradient = newGrad;\n            const sm = spreadMethodOpt.val();\n            curGradient.setAttribute('spreadMethod', sm);\n          }\n          showFocus = type === 'rg' && curGradient.getAttribute('fx') !== null && !(cx === fx && cy === fy);\n          $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);\n          if (showFocus) {\n            $('#' + id + '_jGraduate_match_ctr')[0].checked = false;\n          }\n        } else {\n          $(idref + ' .jGraduate_gradPick').hide();\n          $(idref + ' .jGraduate_colPick').show();\n        }\n      });\n      $(idref + ' > div').hide();\n      tabs.removeClass('jGraduate_tab_current');\n      let tab;\n      switch ($this.paint.type) {\n      case 'linearGradient':\n        tab = $(idref + ' .jGraduate_tab_lingrad');\n        break;\n      case 'radialGradient':\n        tab = $(idref + ' .jGraduate_tab_radgrad');\n        break;\n      default:\n        tab = $(idref + ' .jGraduate_tab_color');\n        break;\n      }\n      $this.show();\n\n      // jPicker will try to show after a 0ms timeout, so need to fire this after that\n      setTimeout(() => {\n        tab.addClass('jGraduate_tab_current').click();\n      }, 10);\n    });\n  };\n  return $;\n}\n","/**\n * SpinButton control\n *\n * Adds bells and whistles to any ordinary textbox to\n * make it look and feel like a SpinButton Control.\n *\n * Supplies {@link external:jQuery.fn.SpinButton} (and also {@link external:jQuery.loadingStylesheets})\n *\n * Originally written by George Adamson, Software Unity (george.jquery@softwareunity.com) August 2006.\n * - Added min/max options\n * - Added step size option\n * - Added bigStep (page up/down) option\n *\n * Modifications made by Mark Gibson, (mgibson@designlinks.net) September 2006:\n * - Converted to jQuery plugin\n * - Allow limited or unlimited min/max values\n * - Allow custom class names, and add class to input element\n * - Removed global vars\n * - Reset (to original or through config) when invalid value entered\n * - Repeat whilst holding mouse button down (with initial pause, like keyboard repeat)\n * - Support mouse wheel in Firefox\n * - Fix double click in IE\n * - Refactored some code and renamed some vars\n *\n * Modifications by Jeff Schiller, June 2009:\n * - provide callback function for when the value changes based on the following\n *   {@link https://www.mail-archive.com/jquery-en@googlegroups.com/msg36070.html}\n *\n * Modifications by Jeff Schiller, July 2009:\n * - improve styling for widget in Opera\n * - consistent key-repeat handling cross-browser\n *\n * Modifications by Alexis Deveria, October 2009:\n * - provide \"stepfunc\" callback option to allow custom function to run when changing a value\n * - Made adjustValue(0) only run on certain keyup events, not all.\n *\n * Tested in IE6, Opera9, Firefox 1.5\n *\n * | Version | Date | Author | Notes\n * |---------|------|--------|------|\n * | v1.0 | 11 Aug 2006 | George Adamson | First release\n * | v1.1 | Aug 2006 | George Adamson | Minor enhancements\n * | v1.2 | 27 Sep 2006 | Mark Gibson | Major enhancements\n * | v1.3a | 28 Sep 2006 | George Adamson | Minor enhancements\n * | v1.4 | 18 Jun 2009 | Jeff Schiller | Added callback function\n * | v1.5 | 06 Jul 2009 | Jeff Schiller | Fixes for Opera.\n * | v1.6 | 13 Oct 2009 | Alexis Deveria | Added stepfunc function\n * | v1.7 | 21 Oct 2009 | Alexis Deveria | Minor fixes.<br />Fast-repeat for keys and live updating as you type.\n * | v1.8 | 12 Jan 2010 | Benjamin Thomas | Fixes for mouseout behavior.<br />Added smallStep\n * | v1.9 | 20 May 2018 | Brett Zamir | Avoid SVGEdit dependency via `stateObj` config;<br />convert to ES6 module |\n * @module jQuerySpinButton\n * @example\n\n  // Create group of settings to initialise spinbutton(s). (Optional)\n  const myOptions = {\n    min: 0, // Set lower limit.\n    max: 100, // Set upper limit.\n    step: 1, // Set increment size.\n    smallStep: 0.5, // Set shift-click increment size.\n    stateObj: {tool_scale: 1}, // Object to allow passing in live-updating scale\n    spinClass: mySpinBtnClass, // CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n    upClass: mySpinUpClass, // CSS class for style when mouse over up button.\n    downClass: mySpinDnClass // CSS class for style when mouse over down button.\n  };\n\n  $(function () {\n    // Initialise INPUT element(s) as SpinButtons: (passing options if desired)\n    $(\"#myInputElement\").SpinButton(myOptions);\n  });\n */\n/**\n * @function module:jQuerySpinButton.jQuerySpinButton\n * @param {external:jQuery} $ The jQuery object to which to add the plug-in\n * @returns {external:jQuery}\n*/\nexport default function jQueryPluginSpinButton ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'spinbtn/jQuery.SpinButton.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @callback module:jQuerySpinButton.StepCallback\n  * @param {external:jQuery} thisArg Value of `this`\n  * @param {Float} i Value to adjust\n  * @returns {Float}\n  */\n  /**\n  * @callback module:jQuerySpinButton.ValueCallback\n  * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.\n  * @returns {undefined}\n  */\n  /**\n   * @typedef {PlainObject} module:jQuerySpinButton.SpinButtonConfig\n   * @property {Float} min Set lower limit\n   * @property {Float} max Set upper limit.\n   * @property {Float} step Set increment size.\n   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.\n   * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)\n   * @property {Float} smallStep Set shift-click increment size.\n   * @property {PlainObject} stateObj Object to allow passing in live-updating scale\n   * @property {Float} stateObj.tool_scale\n   * @property {string} spinClass CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n   * @property {string} upClass CSS class for style when mouse over up button.\n   * @property {string} downClass CSS class for style when mouse over down button.\n   * @property {Float} page Value to be adjusted on page up/page down\n   * @property {Float} reset Reset value when invalid value entered\n   * @property {Float} delay Millisecond delay\n   * @property {Float} interval Millisecond interval\n  */\n  /**\n  * @function external:jQuery.fn.SpinButton\n  * @param {module:jQuerySpinButton.SpinButtonConfig} cfg\n  * @returns {external:jQuery}\n  */\n  $.fn.SpinButton = function (cfg) {\n    cfg = cfg || {};\n\n    /**\n     *\n     * @param {Element} el\n     * @param {\"offsetLeft\"|\"offsetTop\"} prop\n     * @returns {Integer}\n     */\n    function coord (el, prop) {\n      const b = document.body;\n\n      let c = el[prop];\n      while ((el = el.offsetParent) && (el !== b)) {\n        if (!$.browser.msie || (el.currentStyle.position !== 'relative')) {\n          c += el[prop];\n        }\n      }\n\n      return c;\n    }\n\n    return this.each(function () {\n      this.repeating = false;\n\n      // Apply specified options or defaults:\n      // (Ought to refactor this some day to use $.extend() instead)\n      this.spinCfg = {\n        // min: cfg.min ? Number(cfg.min) : null,\n        // max: cfg.max ? Number(cfg.max) : null,\n        min: !isNaN(parseFloat(cfg.min)) ? Number(cfg.min) : null, // Fixes bug with min:0\n        max: !isNaN(parseFloat(cfg.max)) ? Number(cfg.max) : null,\n        step: cfg.step ? Number(cfg.step) : 1,\n        stepfunc: cfg.stepfunc || false,\n        page: cfg.page ? Number(cfg.page) : 10,\n        upClass: cfg.upClass || 'up',\n        downClass: cfg.downClass || 'down',\n        reset: cfg.reset || this.value,\n        delay: cfg.delay ? Number(cfg.delay) : 500,\n        interval: cfg.interval ? Number(cfg.interval) : 100,\n        _btn_width: 20,\n        _direction: null,\n        _delay: null,\n        _repeat: null,\n        callback: cfg.callback || null\n      };\n\n      // if a smallStep isn't supplied, use half the regular step\n      this.spinCfg.smallStep = cfg.smallStep || this.spinCfg.step / 2;\n\n      this.adjustValue = function (i) {\n        let v;\n        if (isNaN(this.value)) {\n          v = this.spinCfg.reset;\n        } else if (typeof this.spinCfg.stepfunc === 'function') {\n          v = this.spinCfg.stepfunc(this, i);\n        } else {\n          // weirdest JavaScript bug ever: 5.1 + 0.1 = 5.199999999\n          v = Number((Number(this.value) + Number(i)).toFixed(5));\n        }\n        if (this.spinCfg.min !== null) { v = Math.max(v, this.spinCfg.min); }\n        if (this.spinCfg.max !== null) { v = Math.min(v, this.spinCfg.max); }\n        this.value = v;\n        if (typeof this.spinCfg.callback === 'function') {\n          this.spinCfg.callback(this);\n        }\n      };\n\n      $(this)\n        .addClass(cfg.spinClass || 'spin-button')\n\n        .mousemove(function (e) {\n          // Determine which button mouse is over, or not (spin direction):\n          const x = e.pageX || e.x;\n          const y = e.pageY || e.y;\n          const el = e.target;\n          const scale = cfg.stateObj.tool_scale || 1;\n          const height = $(el).height() / 2;\n\n          const direction =\n            (x > coord(el, 'offsetLeft') +\n              el.offsetWidth * scale - this.spinCfg._btn_width)\n              ? ((y < coord(el, 'offsetTop') + height * scale) ? 1 : -1)\n              : 0;\n\n          if (direction !== this.spinCfg._direction) {\n            // Style up/down buttons:\n            switch (direction) {\n            case 1: // Up arrow:\n              $(this).removeClass(this.spinCfg.downClass).addClass(this.spinCfg.upClass);\n              break;\n            case -1: // Down arrow:\n              $(this).removeClass(this.spinCfg.upClass).addClass(this.spinCfg.downClass);\n              break;\n            default: // Mouse is elsewhere in the textbox\n              $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n            }\n\n            // Set spin direction:\n            this.spinCfg._direction = direction;\n          }\n        })\n\n        .mouseout(function () {\n          // Reset up/down buttons to their normal appearance when mouse moves away:\n          $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n          this.spinCfg._direction = null;\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .mousedown(function (e) {\n          if (e.button === 0 && this.spinCfg._direction !== 0) {\n            // Respond to click on one of the buttons:\n            const stepSize = e.shiftKey ? this.spinCfg.smallStep : this.spinCfg.step;\n\n            const adjust = () => {\n              this.adjustValue(this.spinCfg._direction * stepSize);\n            };\n\n            adjust();\n\n            // Initial delay before repeating adjustment\n            this.spinCfg._delay = window.setTimeout(() => {\n              adjust();\n              // Repeat adjust at regular intervals\n              this.spinCfg._repeat = window.setInterval(adjust, this.spinCfg.interval);\n            }, this.spinCfg.delay);\n          }\n        })\n\n        .mouseup(function (e) {\n          // Cancel repeating adjustment\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .dblclick(function (e) {\n          if ($.browser.msie) {\n            this.adjustValue(this.spinCfg._direction * this.spinCfg.step);\n          }\n        })\n\n        .keydown(function (e) {\n          // Respond to up/down arrow keys.\n          switch (e.keyCode) {\n          case 38: this.adjustValue(this.spinCfg.step); break; // Up\n          case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n          case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n          case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n          }\n        })\n\n        /*\n        http://unixpapa.com/js/key.html describes the current state-of-affairs for\n        key repeat events:\n        - Safari 3.1 changed their model so that keydown is reliably repeated going forward\n        - Firefox and Opera still only repeat the keypress event, not the keydown\n        */\n        .keypress(function (e) {\n          if (this.repeating) {\n            // Respond to up/down arrow keys.\n            switch (e.keyCode) {\n            case 38: this.adjustValue(this.spinCfg.step); break; // Up\n            case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n            case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n            case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n            }\n          // we always ignore the first keypress event (use the keydown instead)\n          } else {\n            this.repeating = true;\n          }\n        })\n\n        // clear the 'repeating' flag\n        .keyup(function (e) {\n          this.repeating = false;\n          switch (e.keyCode) {\n          case 38: // Up\n          case 40: // Down\n          case 33: // PageUp\n          case 34: // PageDown\n          case 13: this.adjustValue(0); break; // Enter/Return\n          }\n        })\n\n        .bind('mousewheel', function (e) {\n          // Respond to mouse wheel in IE. (It returns up/dn motion in multiples of 120)\n          if (e.wheelDelta >= 120) {\n            this.adjustValue(this.spinCfg.step);\n          } else if (e.wheelDelta <= -120) {\n            this.adjustValue(-this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        })\n\n        .change(function (e) {\n          this.adjustValue(0);\n        });\n\n      if (this.addEventListener) {\n        // Respond to mouse wheel in Firefox\n        this.addEventListener('DOMMouseScroll', function (e) {\n          if (e.detail > 0) {\n            this.adjustValue(-this.spinCfg.step);\n          } else if (e.detail < 0) {\n            this.adjustValue(this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        });\n      }\n    });\n  };\n  return $;\n}\n","/**\n * jQuery Context Menu Plugin\n * Cory S.N. LaViska\n * A Beautiful Site ({@link https://abeautifulsite.net/})\n * Modified by Alexis Deveria\n *\n * More info: {@link https://abeautifulsite.net/2008/09/jquery-context-menu-plugin/}\n *\n * @module jQueryContextMenu\n * @todo Update to latest version and adapt (and needs jQuery update as well): {@link https://github.com/swisnl/jQuery-contextMenu}\n * @version 1.01\n *\n * @license\n * Terms of Use\n *\n * This plugin is dual-licensed under the GNU General Public License\n *   and the MIT License and is copyright A Beautiful Site, LLC.\n *\n*/\nimport {isMac} from '../browser.js';\n\n/**\n* @callback module:jQueryContextMenu.jQueryContextMenuListener\n* @param {string} href The `href` value after the first character (for bypassing an initial `#`)\n* @param {external:jQuery} srcElement The wrapped jQuery srcElement\n* @param {{x: Float, y: Float, docX: Float, docY: Float}} coords\n*/\n\n/**\n* @typedef {PlainObject} module:jQueryContextMenu.jQueryContextMenuConfig\n* @property {string} menu\n* @property {Float} inSpeed\n* @property {Float} outSpeed\n* @property {boolean} allowLeft\n*/\n\n/**\n* Adds {@link external:jQuery.fn.contextMenu},\n* {@link external:jQuery.fn.disableContextMenuItems},\n* {@link external:jQuery.fn.enableContextMenuItems},\n* {@link external:jQuery.fn.disableContextMenu},\n* {@link external:jQuery.fn.enableContextMenu},\n* {@link external:jQuery.fn.destroyContextMenu}.\n* @function module:jQueryContextMenu.jQueryContextMenu\n* @param {external:jQuery} $ The jQuery object to wrap (with `contextMenu`, `disableContextMenuItems`, `enableContextMenuItems`, `disableContextMenu`, `enableContextMenu`, `destroyContextMenu`)\n* @returns {external:jQuery}\n*/\nfunction jQueryContextMenu ($) {\n  const win = $(window);\n  const doc = $(document);\n\n  $.extend($.fn, {\n    /**\n    * @memberof external:jQuery.fn\n    * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o\n    * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener\n    * @returns {external:jQuery}\n    */\n    contextMenu (o, listener) {\n      // Defaults\n      if (o.menu === undefined) return false;\n      if (o.inSpeed === undefined) o.inSpeed = 150;\n      if (o.outSpeed === undefined) o.outSpeed = 75;\n      // 0 needs to be -1 for expected results (no fade)\n      if (o.inSpeed === 0) o.inSpeed = -1;\n      if (o.outSpeed === 0) o.outSpeed = -1;\n      // Loop each context menu\n      $(this).each(function () {\n        const el = $(this);\n        const offset = $(el).offset();\n\n        const menu = $('#' + o.menu);\n\n        // Add contextMenu class\n        menu.addClass('contextMenu');\n        // Simulate a true right click\n        $(this).bind('mousedown', function (evt) {\n          $(this).mouseup(function (e) {\n            const srcElement = $(this);\n            srcElement.unbind('mouseup');\n\n            if (!(evt.button === 2 || o.allowLeft ||\n              (evt.ctrlKey && isMac()))) {\n              return undefined;\n            }\n            e.stopPropagation();\n            // Hide context menus that may be showing\n            $('.contextMenu').hide();\n            // Get this context menu\n\n            if (el.hasClass('disabled')) return false;\n\n            // Detect mouse position\n            let x = e.pageX, y = e.pageY;\n\n            const xOff = win.width() - menu.width(),\n              yOff = win.height() - menu.height();\n\n            if (x > xOff - 15) x = xOff - 15;\n            if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF\n\n            // Show the menu\n            doc.unbind('click');\n            menu.css({top: y, left: x}).fadeIn(o.inSpeed);\n            // Hover events\n            menu.find('A').mouseover(function () {\n              menu.find('LI.hover').removeClass('hover');\n              $(this).parent().addClass('hover');\n            }).mouseout(function () {\n              menu.find('LI.hover').removeClass('hover');\n            });\n\n            // Keyboard\n            doc.keypress(function (ev) {\n              switch (ev.keyCode) {\n              case 38: // up\n                if (!menu.find('LI.hover').length) {\n                  menu.find('LI:last').addClass('hover');\n                } else {\n                  menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');\n                  if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');\n                }\n                break;\n              case 40: // down\n                if (!menu.find('LI.hover').length) {\n                  menu.find('LI:first').addClass('hover');\n                } else {\n                  menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');\n                  if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');\n                }\n                break;\n              case 13: // enter\n                menu.find('LI.hover A').trigger('click');\n                break;\n              case 27: // esc\n                doc.trigger('click');\n                break;\n              }\n            });\n\n            // When items are selected\n            menu.find('A').unbind('mouseup');\n            menu.find('LI:not(.disabled) A').mouseup(function () {\n              doc.unbind('click').unbind('keypress');\n              $('.contextMenu').hide();\n              if (listener) {\n                listener($(this).attr('href').substr(1), $(srcElement), {\n                  x: x - offset.left, y: y - offset.top, docX: x, docY: y\n                });\n              }\n              return false;\n            });\n\n            // Hide bindings\n            setTimeout(function () { // Delay for Mozilla\n              doc.click(function () {\n                doc.unbind('click').unbind('keypress');\n                menu.fadeOut(o.outSpeed);\n                return false;\n              });\n            }, 0);\n            return undefined;\n          });\n        });\n\n        // Disable text selection\n        if ($.browser.mozilla) {\n          $('#' + o.menu).each(function () { $(this).css({MozUserSelect: 'none'}); });\n        } else if ($.browser.msie) {\n          $('#' + o.menu).each(function () { $(this).bind('selectstart.disableTextSelect', function () { return false; }); });\n        } else {\n          $('#' + o.menu).each(function () { $(this).bind('mousedown.disableTextSelect', function () { return false; }); });\n        }\n        // Disable browser context menu (requires both selectors to work in IE/Safari + FF/Chrome)\n        $(el).add($('UL.contextMenu')).bind('contextmenu', function () { return false; });\n      });\n      return $(this);\n    },\n\n    /**\n    * Disable context menu items on the fly.\n    * @memberof external:jQuery.fn\n    * @param {undefined|string} o Comma-separated\n    * @returns {external:jQuery}\n    */\n    disableContextMenuItems (o) {\n      if (o === undefined) {\n        // Disable all\n        $(this).find('LI').addClass('disabled');\n        return $(this);\n      }\n      $(this).each(function () {\n        if (o !== undefined) {\n          const d = o.split(',');\n          for (let i = 0; i < d.length; i++) {\n            $(this).find('A[href=\"' + d[i] + '\"]').parent().addClass('disabled');\n          }\n        }\n      });\n      return $(this);\n    },\n\n    /**\n    * Enable context menu items on the fly.\n    * @memberof external:jQuery.fn\n    * @param {undefined|string} o Comma-separated\n    * @returns {external:jQuery}\n    */\n    enableContextMenuItems (o) {\n      if (o === undefined) {\n        // Enable all\n        $(this).find('LI.disabled').removeClass('disabled');\n        return $(this);\n      }\n      $(this).each(function () {\n        if (o !== undefined) {\n          const d = o.split(',');\n          for (let i = 0; i < d.length; i++) {\n            $(this).find('A[href=\"' + d[i] + '\"]').parent().removeClass('disabled');\n          }\n        }\n      });\n      return $(this);\n    },\n\n    /**\n    * Disable context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    disableContextMenu () {\n      $(this).each(function () {\n        $(this).addClass('disabled');\n      });\n      return $(this);\n    },\n\n    /**\n    * Enable context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    enableContextMenu () {\n      $(this).each(function () {\n        $(this).removeClass('disabled');\n      });\n      return $(this);\n    },\n\n    /**\n    * Destroy context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    destroyContextMenu () {\n      // Destroy specified context menus\n      $(this).each(function () {\n        // Disable action\n        $(this).unbind('mousedown').unbind('mouseup');\n      });\n      return $(this);\n    }\n  });\n  return $;\n}\n\nexport default jQueryContextMenu;\n","/**\n * jPicker (Adapted from version 1.1.6)\n *\n * jQuery Plugin for Photoshop style color picker\n *\n * @module jPicker\n * @copyright (c) 2010 Christopher T. Tillman\n * Digital Magic Productions, Inc. ({@link http://www.digitalmagicpro.com/})\n * FREE to use, alter, copy, sell, and especially ENHANCE\n * @license MIT\n *\n * Painstakingly ported from John Dyers' excellent work on his own color picker based on the Prototype framework.\n *\n * John Dyers' website: {@link http://johndyer.name}\n * Color Picker page: {@link http://johndyer.name/photoshop-like-javascript-color-picker/}\n */\n\n/**\n* @external Math\n*/\n/**\n* @memberof external:Math\n* @param {Float} value\n* @param {Float} precision\n* @returns {Float}\n*/\nfunction toFixedNumeric (value, precision) {\n  if (precision === undefined) precision = 0;\n  return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);\n}\n\n/**\n * Whether a value is `null` or `undefined`.\n * @param {Any} val\n * @returns {boolean}\n */\nconst isNullish = (val) => {\n  return val === null || val === undefined;\n};\n\n/**\n* @function module:jPicker.jPicker\n* @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})\n* @returns {external:jQuery}\n*/\nconst jPicker = function ($) {\n  if (!$.loadingStylesheets) {\n    /**\n    * @name loadingStylesheets\n    * @type {string[]}\n    * @memberof external:jQuery\n    */\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jPicker.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @typedef {PlainObject} module:jPicker.SliderOptions\n  * @property {external:jQuery|PlainObject} arrow\n  * @property {string} arrow.image Not in use?\n  * @property {Float} arrow.width\n  * @property {Float} arrow.height\n  * @property {PlainObject} map\n  * @property {Float} map.width\n  * @property {Float} map.height\n  */\n\n  /**\n  * Encapsulate slider functionality for the ColorMap and ColorBar -\n  * could be useful to use a jQuery UI draggable for this with certain extensions.\n  * @memberof module:jPicker\n  * @param {external:jQuery} bar\n  * @param {module:jPicker.SliderOptions} options\n  * @returns {undefined}\n  */\n  class Slider {\n    constructor (bar, options) {\n      const that = this;\n      /**\n       * Fire events on the supplied `context`\n       * @param {module:jPicker.JPickerInit} context\n       * @returns {undefined}\n       */\n      function fireChangeEvents (context) {\n        changeEvents.forEach((changeEvent) => {\n          changeEvent.call(that, that, context);\n        });\n      }\n\n      /**\n       * Bind the mousedown to the bar not the arrow for quick snapping to the clicked location.\n       * @param {external:jQuery.Event} e\n       * @returns {undefined}\n       */\n      function mouseDown (e) {\n        const off = bar.offset();\n        offset = {l: off.left | 0, t: off.top | 0}; // eslint-disable-line no-bitwise\n        clearTimeout(timeout);\n        // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call(that, e);\n        }, 0);\n        // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing\n        $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);\n        e.preventDefault(); // don't try to select anything or drag the image to the desktop\n      }\n      /**\n       * Set the values as the mouse moves.\n       * @param {external:jQuery.Event} e\n       * @returns {false}\n       */\n      function mouseMove (e) {\n        clearTimeout(timeout);\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call(that, e);\n        }, 0);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      /**\n       * Unbind the document events - they aren't needed when not dragging.\n       * @param {external:jQuery.Event} e\n       * @returns {false}\n       */\n      function mouseUp (e) {\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n\n      /**\n       * Calculate mouse position and set value within the current range.\n       * @param {Event} e\n       * @returns {undefined}\n       */\n      function setValuesFromMousePosition (e) {\n        const barW = bar.w, // local copies for YUI compressor\n          barH = bar.h;\n        let locX = e.pageX - offset.l,\n          locY = e.pageY - offset.t;\n        // keep the arrow within the bounds of the bar\n        if (locX < 0) locX = 0;\n        else if (locX > barW) locX = barW;\n        if (locY < 0) locY = 0;\n        else if (locY > barH) locY = barH;\n        val.call(that, 'xy', {\n          x: ((locX / barW) * rangeX) + minX,\n          y: ((locY / barH) * rangeY) + minY\n        });\n      }\n      /**\n       *\n       * @returns {undefined}\n       */\n      function draw () {\n        const\n          barW = bar.w,\n          barH = bar.h,\n          arrowW = arrow.w,\n          arrowH = arrow.h;\n        let arrowOffsetX = 0,\n          arrowOffsetY = 0;\n        setTimeout(function () {\n          /* eslint-disable no-bitwise */\n          if (rangeX > 0) { // range is greater than zero\n            // constrain to bounds\n            if (x === maxX) arrowOffsetX = barW;\n            else arrowOffsetX = ((x / rangeX) * barW) | 0;\n          }\n          if (rangeY > 0) { // range is greater than zero\n            // constrain to bounds\n            if (y === maxY) arrowOffsetY = barH;\n            else arrowOffsetY = ((y / rangeY) * barH) | 0;\n          }\n          // if arrow width is greater than bar width, center arrow and prevent horizontal dragging\n          if (arrowW >= barW) arrowOffsetX = (barW >> 1) - (arrowW >> 1); // number >> 1 - superfast bitwise divide by two and truncate (move bits over one bit discarding lowest)\n          else arrowOffsetX -= arrowW >> 1;\n          // if arrow height is greater than bar height, center arrow and prevent vertical dragging\n          if (arrowH >= barH) arrowOffsetY = (barH >> 1) - (arrowH >> 1);\n          else arrowOffsetY -= arrowH >> 1;\n          // set the arrow position based on these offsets\n          arrow.css({left: arrowOffsetX + 'px', top: arrowOffsetY + 'px'});\n          /* eslint no-bitwise: [\"error\"] */\n        });\n      }\n\n      /**\n       * Get or set a value.\n       * @param {?(\"xy\"|\"x\"|\"y\")} name\n       * @param {module:math.XYObject} value\n       * @param {module:jPicker.Slider} context\n       * @returns {module:math.XYObject|Float|undefined}\n       */\n      function val (name, value, context) {\n        const set = value !== undefined;\n        if (!set) {\n          if (isNullish(name)) name = 'xy';\n          switch (name.toLowerCase()) {\n          case 'x': return x;\n          case 'y': return y;\n          case 'xy':\n          default: return {x, y};\n          }\n        }\n        if (!isNullish(context) && context === that) return undefined;\n        let changed = false;\n\n        let newX, newY;\n        if (isNullish(name)) name = 'xy';\n        switch (name.toLowerCase()) {\n        case 'x':\n          newX = (value && ((value.x && value.x | 0) || value | 0)) || 0;\n          break;\n        case 'y':\n          newY = (value && ((value.y && value.y | 0) || value | 0)) || 0;\n          break;\n        case 'xy':\n        default:\n          newX = (value && value.x && value.x | 0) || 0;\n          newY = (value && value.y && value.y | 0) || 0;\n          break;\n        }\n        if (!isNullish(newX)) {\n          if (newX < minX) newX = minX;\n          else if (newX > maxX) newX = maxX;\n          if (x !== newX) {\n            x = newX;\n            changed = true;\n          }\n        }\n        if (!isNullish(newY)) {\n          if (newY < minY) newY = minY;\n          else if (newY > maxY) newY = maxY;\n          if (y !== newY) {\n            y = newY;\n            changed = true;\n          }\n        }\n        changed && fireChangeEvents.call(that, context || that);\n        return undefined;\n      }\n\n      /**\n      * @typedef {PlainObject} module:jPicker.MinMaxRangeX\n      * @property {Float} minX\n      * @property {Float} maxX\n      * @property {Float} rangeX\n      */\n      /**\n      * @typedef {PlainObject} module:jPicker.MinMaxRangeY\n      * @property {Float} minY\n      * @property {Float} maxY\n      * @property {Float} rangeY\n      */\n      /**\n      * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY\n      */\n\n      /**\n       *\n       * @param {\"minx\"|\"maxx\"|\"rangex\"|\"miny\"|\"maxy\"|\"rangey\"|\"all\"} name\n       * @param {module:jPicker.MinMaxRangeXY} value\n       * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}\n       */\n      function range (name, value) {\n        const set = value !== undefined;\n        if (!set) {\n          if (isNullish(name)) name = 'all';\n          switch (name.toLowerCase()) {\n          case 'minx': return minX;\n          case 'maxx': return maxX;\n          case 'rangex': return {minX, maxX, rangeX};\n          case 'miny': return minY;\n          case 'maxy': return maxY;\n          case 'rangey': return {minY, maxY, rangeY};\n          case 'all':\n          default: return {minX, maxX, rangeX, minY, maxY, rangeY};\n          }\n        }\n        let // changed = false,\n          newMinX,\n          newMaxX,\n          newMinY,\n          newMaxY;\n        if (isNullish(name)) name = 'all';\n        /* eslint-disable no-bitwise */\n        switch (name.toLowerCase()) {\n        case 'minx':\n          newMinX = (value && ((value.minX && value.minX | 0) || value | 0)) || 0;\n          break;\n        case 'maxx':\n          newMaxX = (value && ((value.maxX && value.maxX | 0) || value | 0)) || 0;\n          break;\n        case 'rangex':\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          break;\n        case 'miny':\n          newMinY = (value && ((value.minY && value.minY | 0) || value | 0)) || 0;\n          break;\n        case 'maxy':\n          newMaxY = (value && ((value.maxY && value.maxY | 0) || value | 0)) || 0;\n          break;\n        case 'rangey':\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        case 'all':\n        default:\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        }\n\n        /* eslint no-bitwise: [\"error\"] */\n        if (!isNullish(newMinX) && minX !== newMinX) {\n          minX = newMinX;\n          rangeX = maxX - minX;\n        }\n        if (!isNullish(newMaxX) && maxX !== newMaxX) {\n          maxX = newMaxX;\n          rangeX = maxX - minX;\n        }\n        if (!isNullish(newMinY) && minY !== newMinY) {\n          minY = newMinY;\n          rangeY = maxY - minY;\n        }\n        if (!isNullish(newMaxY) && maxY !== newMaxY) {\n          maxY = newMaxY;\n          rangeY = maxY - minY;\n        }\n        return undefined;\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function bind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function unbind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) changeEvents.splice(i, 1);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function destroy () {\n        // unbind all possible events and null objects\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        bar.unbind('mousedown', mouseDown);\n        bar = null;\n        arrow = null;\n        changeEvents = null;\n      }\n      let offset,\n        timeout,\n        x = 0,\n        y = 0,\n        minX = 0,\n        maxX = 100,\n        rangeX = 100,\n        minY = 0,\n        maxY = 100,\n        rangeY = 100,\n        arrow = bar.find('img:first'), // the arrow image to drag\n        changeEvents = [];\n\n      $.extend(\n        true,\n        // public properties, methods, and event bindings - these we need\n        //   to access from other controls\n        that,\n        {\n          val,\n          range,\n          bind,\n          unbind,\n          destroy\n        }\n      );\n      // initialize this control\n      arrow.src = options.arrow && options.arrow.image;\n      arrow.w = (options.arrow && options.arrow.width) || arrow.width();\n      arrow.h = (options.arrow && options.arrow.height) || arrow.height();\n      bar.w = (options.map && options.map.width) || bar.width();\n      bar.h = (options.map && options.map.height) || bar.height();\n      // bind mousedown event\n      bar.bind('mousedown', mouseDown);\n      bind.call(that, draw);\n    }\n  }\n\n  /**\n   * Controls for all the input elements for the typing in color values.\n   * @param {external:jQuery} picker\n   * @param {external:jQuery.jPicker.Color} color\n   * @param {external:jQuery.fn.$.fn.jPicker} bindedHex\n   * @param {Float} alphaPrecision\n   * @constructor\n   */\n  class ColorValuePicker {\n    constructor (picker, color, bindedHex, alphaPrecision) {\n      const that = this; // private properties and methods\n      const inputs = picker.find('td.Text input');\n      // input box key down - use arrows to alter color\n      /**\n       *\n       * @param {Event} e\n       * @returns {Event|false|undefined}\n       */\n      function keyDown (e) {\n        if (e.target.value === '' && e.target !== hex.get(0) && ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) || isNullish(bindedHex))) return undefined;\n        if (!validateKey(e)) return e;\n        switch (e.target) {\n        case red.get(0):\n          switch (e.keyCode) {\n          case 38:\n            red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));\n            color.val('r', red.val(), e.target);\n            return false;\n          case 40:\n            red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));\n            color.val('r', red.val(), e.target);\n            return false;\n          }\n          break;\n        case green.get(0):\n          switch (e.keyCode) {\n          case 38:\n            green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));\n            color.val('g', green.val(), e.target);\n            return false;\n          case 40:\n            green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));\n            color.val('g', green.val(), e.target);\n            return false;\n          }\n          break;\n        case blue.get(0):\n          switch (e.keyCode) {\n          case 38:\n            blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));\n            color.val('b', blue.val(), e.target);\n            return false;\n          case 40:\n            blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));\n            color.val('b', blue.val(), e.target);\n            return false;\n          }\n          break;\n        case alpha && alpha.get(0):\n          switch (e.keyCode) {\n          case 38:\n            alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));\n            color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n            return false;\n          case 40:\n            alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));\n            color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n            return false;\n          }\n          break;\n        case hue.get(0):\n          switch (e.keyCode) {\n          case 38:\n            hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));\n            color.val('h', hue.val(), e.target);\n            return false;\n          case 40:\n            hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));\n            color.val('h', hue.val(), e.target);\n            return false;\n          }\n          break;\n        case saturation.get(0):\n          switch (e.keyCode) {\n          case 38:\n            saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));\n            color.val('s', saturation.val(), e.target);\n            return false;\n          case 40:\n            saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));\n            color.val('s', saturation.val(), e.target);\n            return false;\n          }\n          break;\n        case value.get(0):\n          switch (e.keyCode) {\n          case 38:\n            value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));\n            color.val('v', value.val(), e.target);\n            return false;\n          case 40:\n            value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));\n            color.val('v', value.val(), e.target);\n            return false;\n          }\n          break;\n        }\n        return undefined;\n      }\n      // input box key up - validate value and set color\n      /**\n      * @param {Event} e\n      * @returns {Event|undefined}\n      * @todo Why is this returning an event?\n      */\n      function keyUp (e) {\n        if (e.target.value === '' && e.target !== hex.get(0) &&\n          ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) ||\n          isNullish(bindedHex))) return undefined;\n        if (!validateKey(e)) return e;\n        switch (e.target) {\n        case red.get(0):\n          red.val(setValueInRange.call(that, red.val(), 0, 255));\n          color.val('r', red.val(), e.target);\n          break;\n        case green.get(0):\n          green.val(setValueInRange.call(that, green.val(), 0, 255));\n          color.val('g', green.val(), e.target);\n          break;\n        case blue.get(0):\n          blue.val(setValueInRange.call(that, blue.val(), 0, 255));\n          color.val('b', blue.val(), e.target);\n          break;\n        case alpha && alpha.get(0):\n          alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));\n          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n          break;\n        case hue.get(0):\n          hue.val(setValueInRange.call(that, hue.val(), 0, 360));\n          color.val('h', hue.val(), e.target);\n          break;\n        case saturation.get(0):\n          saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));\n          color.val('s', saturation.val(), e.target);\n          break;\n        case value.get(0):\n          value.val(setValueInRange.call(that, value.val(), 0, 100));\n          color.val('v', value.val(), e.target);\n          break;\n        case hex.get(0):\n          hex.val(hex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n          bindedHex && bindedHex.val(hex.val());\n          color.val('hex', hex.val() !== '' ? hex.val() : null, e.target);\n          break;\n        case bindedHex && bindedHex.get(0):\n          bindedHex.val(bindedHex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n          hex.val(bindedHex.val());\n          color.val('hex', bindedHex.val() !== '' ? bindedHex.val() : null, e.target);\n          break;\n        case ahex && ahex.get(0):\n          ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));\n          color.val('a', !isNullish(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);\n          break;\n        }\n        return undefined;\n      }\n      // input box blur - reset to original if value empty\n      /**\n      * @param {Event} e\n      * @returns {undefined}\n      */\n      function blur (e) {\n        if (!isNullish(color.val())) {\n          switch (e.target) {\n          case red.get(0): red.val(color.val('r')); break;\n          case green.get(0): green.val(color.val('g')); break;\n          case blue.get(0): blue.val(color.val('b')); break;\n          case alpha && alpha.get(0): alpha.val(toFixedNumeric((color.val('a') * 100) / 255, alphaPrecision)); break;\n          case hue.get(0): hue.val(color.val('h')); break;\n          case saturation.get(0): saturation.val(color.val('s')); break;\n          case value.get(0): value.val(color.val('v')); break;\n          case hex.get(0):\n          case bindedHex && bindedHex.get(0):\n            hex.val(color.val('hex'));\n            bindedHex && bindedHex.val(color.val('hex'));\n            break;\n          case ahex && ahex.get(0): ahex.val(color.val('ahex').substring(6)); break;\n          }\n        }\n      }\n      /**\n      * @param {Event} e\n      * @returns {boolean}\n      */\n      function validateKey (e) {\n        switch (e.keyCode) {\n        case 9:\n        case 16:\n        case 29:\n        case 37:\n        case 39:\n          return false;\n        case 'c'.charCodeAt():\n        case 'v'.charCodeAt():\n          if (e.ctrlKey) return false;\n        }\n        return true;\n      }\n\n      /**\n      * Constrain value within range.\n      * @param {Float|string} value\n      * @param {Float} min\n      * @param {Float} max\n      * @returns {Float|string} Returns a number or numeric string\n      */\n      function setValueInRange (value, min, max) {\n        if (value === '' || isNaN(value)) return min;\n        if (value > max) return max;\n        if (value < min) return min;\n        return value;\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @param {Element} context\n      * @returns {undefined}\n      */\n      function colorChanged (ui, context) {\n        const all = ui.val('all');\n        if (context !== red.get(0)) red.val(!isNullish(all) ? all.r : '');\n        if (context !== green.get(0)) green.val(!isNullish(all) ? all.g : '');\n        if (context !== blue.get(0)) blue.val(!isNullish(all) ? all.b : '');\n        if (alpha && context !== alpha.get(0)) alpha.val(!isNullish(all) ? toFixedNumeric((all.a * 100) / 255, alphaPrecision) : '');\n        if (context !== hue.get(0)) hue.val(!isNullish(all) ? all.h : '');\n        if (context !== saturation.get(0)) saturation.val(!isNullish(all) ? all.s : '');\n        if (context !== value.get(0)) value.val(!isNullish(all) ? all.v : '');\n        if (context !== hex.get(0) && ((bindedHex && context !== bindedHex.get(0)) || !bindedHex)) hex.val(!isNullish(all) ? all.hex : '');\n        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish(all) ? all.hex : '');\n        if (ahex && context !== ahex.get(0)) ahex.val(!isNullish(all) ? all.ahex.substring(6) : '');\n      }\n      /**\n      * Unbind all events and null objects.\n      * @returns {undefined}\n      */\n      function destroy () {\n        red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);\n        red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);\n        color.unbind(colorChanged);\n        red = null;\n        green = null;\n        blue = null;\n        alpha = null;\n        hue = null;\n        saturation = null;\n        value = null;\n        hex = null;\n        ahex = null;\n      }\n      let\n        red = inputs.eq(3),\n        green = inputs.eq(4),\n        blue = inputs.eq(5),\n        alpha = inputs.length > 7 ? inputs.eq(6) : null,\n        hue = inputs.eq(0),\n        saturation = inputs.eq(1),\n        value = inputs.eq(2),\n        hex = inputs.eq(inputs.length > 7 ? 7 : 6),\n        ahex = inputs.length > 7 ? inputs.eq(8) : null;\n      $.extend(true, that, {\n        // public properties and methods\n        destroy\n      });\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);\n      color.bind(colorChanged);\n    }\n  }\n\n  /**\n  * @typedef {PlainObject} module:jPicker.JPickerInit\n  * @property {Integer} [a]\n  * @property {Integer} [b]\n  * @property {Integer} [g]\n  * @property {Integer} [h]\n  * @property {Integer} [r]\n  * @property {Integer} [s]\n  * @property {Integer} [v]\n  * @property {string} [hex]\n  * @property {string} [ahex]\n  */\n\n  /**\n  * @namespace {PlainObject} jPicker\n  * @memberof external:jQuery\n  */\n  $.jPicker = /** @lends external:jQuery.jPicker */ {\n    /**\n    * Array holding references to each active instance of the jPicker control\n    * @type {external:jQuery.fn.$.fn.jPicker[]}\n    */\n    List: [],\n    /**\n    * Color object - we will be able to assign by any color space type or\n    * retrieve any color space info.\n    * We want this public so we can optionally assign new color objects to\n    * initial values using inputs other than a string hex value (also supported)\n    * Note: JSDoc didn't document when expressed here as an ES6 Class.\n    * @namespace\n    * @class\n    * @memberof external:jQuery.jPicker\n    * @param {module:jPicker.JPickerInit} init\n    */\n    Color: function (init) { // eslint-disable-line object-shorthand\n      const that = this;\n      /**\n       *\n       * @param {module:jPicker.Slider} context\n       * @returns {undefined}\n       */\n      function fireChangeEvents (context) {\n        for (let i = 0; i < changeEvents.length; i++) changeEvents[i].call(that, that, context);\n      }\n\n      /**\n       * @param {string|\"ahex\"|\"hex\"|\"all\"|\"\"|null|undefined} name String composed of letters \"r\", \"g\", \"b\", \"a\", \"h\", \"s\", and/or \"v\"\n       * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]\n       * @param {external:jQuery.jPicker.Color} context\n       * @returns {module:jPicker.JPickerInit|string|null|undefined}\n       */\n      function val (name, value, context) {\n        // Kind of ugly\n        const set = Boolean(value);\n        if (set && value.ahex === '') value.ahex = '00000000';\n        if (!set) {\n          let ret;\n          if (isNullish(name) || name === '') name = 'all';\n          if (isNullish(r)) return null;\n          switch (name.toLowerCase()) {\n          case 'ahex': return ColorMethods.rgbaToHex({r, g, b, a});\n          case 'hex': return val('ahex').substring(0, 6);\n          case 'all': return {\n            r, g, b, a, h, s, v,\n            hex: val.call(that, 'hex'),\n            ahex: val.call(that, 'ahex')\n          };\n          default: {\n            ret = {};\n            const nameLength = name.length;\n            [...name].forEach((ch) => {\n              switch (ch) {\n              case 'r':\n                if (nameLength === 1) ret = r;\n                else ret.r = r;\n                break;\n              case 'g':\n                if (nameLength === 1) ret = g;\n                else ret.g = g;\n                break;\n              case 'b':\n                if (nameLength === 1) ret = b;\n                else ret.b = b;\n                break;\n              case 'a':\n                if (nameLength === 1) ret = a;\n                else ret.a = a;\n                break;\n              case 'h':\n                if (nameLength === 1) ret = h;\n                else ret.h = h;\n                break;\n              case 's':\n                if (nameLength === 1) ret = s;\n                else ret.s = s;\n                break;\n              case 'v':\n                if (nameLength === 1) ret = v;\n                else ret.v = v;\n                break;\n              }\n            });\n          }\n          }\n          return typeof ret === 'object' && !Object.keys(ret).length\n            ? val.call(that, 'all')\n            : ret;\n        }\n        if (!isNullish(context) && context === that) return undefined;\n        if (isNullish(name)) name = '';\n\n        let changed = false;\n        if (isNullish(value)) {\n          if (!isNullish(r)) {\n            r = null;\n            changed = true;\n          }\n          if (!isNullish(g)) {\n            g = null;\n            changed = true;\n          }\n          if (!isNullish(b)) {\n            b = null;\n            changed = true;\n          }\n          if (!isNullish(a)) {\n            a = null;\n            changed = true;\n          }\n          if (!isNullish(h)) {\n            h = null;\n            changed = true;\n          }\n          if (!isNullish(s)) {\n            s = null;\n            changed = true;\n          }\n          if (!isNullish(v)) {\n            v = null;\n            changed = true;\n          }\n          changed && fireChangeEvents.call(that, context || that);\n          return undefined;\n        }\n        switch (name.toLowerCase()) {\n        case 'ahex':\n        case 'hex': {\n          const ret = ColorMethods.hexToRgba((value && (value.ahex || value.hex)) || value || 'none');\n          val.call(that, 'rgba', {\n            r: ret.r,\n            g: ret.g,\n            b: ret.b,\n            a: name === 'ahex'\n              ? ret.a\n              : !isNullish(a)\n                ? a\n                : 255\n          }, context);\n          break;\n        } default: {\n          if (value && (!isNullish(value.ahex) || !isNullish(value.hex))) {\n            val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);\n            return undefined;\n          }\n          const newV = {};\n          let rgb = false, hsv = false;\n          if (value.r !== undefined && !name.includes('r')) name += 'r';\n          if (value.g !== undefined && !name.includes('g')) name += 'g';\n          if (value.b !== undefined && !name.includes('b')) name += 'b';\n          if (value.a !== undefined && !name.includes('a')) name += 'a';\n          if (value.h !== undefined && !name.includes('h')) name += 'h';\n          if (value.s !== undefined && !name.includes('s')) name += 's';\n          if (value.v !== undefined && !name.includes('v')) name += 'v';\n          [...name].forEach((ch) => {\n            switch (ch) {\n            case 'r':\n              if (hsv) return;\n              rgb = true;\n              newV.r = (value.r && value.r | 0) || (value | 0) || 0;\n              if (newV.r < 0) newV.r = 0;\n              else if (newV.r > 255) newV.r = 255;\n              if (r !== newV.r) {\n                ({r} = newV);\n                changed = true;\n              }\n              break;\n            case 'g':\n              if (hsv) return;\n              rgb = true;\n              newV.g = (value && value.g && value.g | 0) || (value && value | 0) || 0;\n              if (newV.g < 0) newV.g = 0;\n              else if (newV.g > 255) newV.g = 255;\n              if (g !== newV.g) {\n                ({g} = newV);\n                changed = true;\n              }\n              break;\n            case 'b':\n              if (hsv) return;\n              rgb = true;\n              newV.b = (value && value.b && value.b | 0) || (value && value | 0) || 0;\n              if (newV.b < 0) newV.b = 0;\n              else if (newV.b > 255) newV.b = 255;\n              if (b !== newV.b) {\n                ({b} = newV);\n                changed = true;\n              }\n              break;\n            case 'a':\n              newV.a = value && !isNullish(value.a) ? value.a | 0 : value | 0;\n              if (newV.a < 0) newV.a = 0;\n              else if (newV.a > 255) newV.a = 255;\n              if (a !== newV.a) {\n                ({a} = newV);\n                changed = true;\n              }\n              break;\n            case 'h':\n              if (rgb) return;\n              hsv = true;\n              newV.h = (value && value.h && value.h | 0) || (value && value | 0) || 0;\n              if (newV.h < 0) newV.h = 0;\n              else if (newV.h > 360) newV.h = 360;\n              if (h !== newV.h) {\n                ({h} = newV);\n                changed = true;\n              }\n              break;\n            case 's':\n              if (rgb) return;\n              hsv = true;\n              newV.s = !isNullish(value.s) ? value.s | 0 : value | 0;\n              if (newV.s < 0) newV.s = 0;\n              else if (newV.s > 100) newV.s = 100;\n              if (s !== newV.s) {\n                ({s} = newV);\n                changed = true;\n              }\n              break;\n            case 'v':\n              if (rgb) return;\n              hsv = true;\n              newV.v = !isNullish(value.v) ? value.v | 0 : value | 0;\n              if (newV.v < 0) newV.v = 0;\n              else if (newV.v > 100) newV.v = 100;\n              if (v !== newV.v) {\n                ({v} = newV);\n                changed = true;\n              }\n              break;\n            }\n          });\n          if (changed) {\n            if (rgb) {\n              r = r || 0;\n              g = g || 0;\n              b = b || 0;\n              const ret = ColorMethods.rgbToHsv({r, g, b});\n              ({h, s, v} = ret);\n            } else if (hsv) {\n              h = h || 0;\n              s = !isNullish(s) ? s : 100;\n              v = !isNullish(v) ? v : 100;\n              const ret = ColorMethods.hsvToRgb({h, s, v});\n              ({r, g, b} = ret);\n            }\n            a = !isNullish(a) ? a : 255;\n            fireChangeEvents.call(that, context || that);\n          }\n          break;\n        }\n        }\n        return undefined;\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function bind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function unbind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) {\n          changeEvents.splice(i, 1);\n        }\n      }\n      /**\n      * Unset `changeEvents`\n      * @returns {undefined}\n      */\n      function destroy () {\n        changeEvents = null;\n      }\n      let r, g, b, a, h, s, v, changeEvents = [];\n\n      $.extend(true, that, {\n        // public properties and methods\n        val,\n        bind,\n        unbind,\n        destroy\n      });\n      if (init) {\n        if (!isNullish(init.ahex)) {\n          val('ahex', init);\n        } else if (!isNullish(init.hex)) {\n          val(\n            (!isNullish(init.a) ? 'a' : '') + 'hex',\n            !isNullish(init.a)\n              ? {ahex: init.hex + ColorMethods.intToHex(init.a)}\n              : init\n          );\n        } else if (!isNullish(init.r) && !isNullish(init.g) && !isNullish(init.b)) {\n          val('rgb' + (!isNullish(init.a) ? 'a' : ''), init);\n        } else if (!isNullish(init.h) && !isNullish(init.s) && !isNullish(init.v)) {\n          val('hsv' + (!isNullish(init.a) ? 'a' : ''), init);\n        }\n      }\n    },\n    /**\n    * color conversion methods  - make public to give use to external scripts\n    * @namespace\n    */\n    ColorMethods: {\n      /**\n      * @typedef {PlainObject} module:jPicker.RGBA\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      * @property {Integer} a\n      */\n      /**\n      * @typedef {PlainObject} module:jPicker.RGB\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      */\n      /**\n      * @param {string} hex\n      * @returns {module:jPicker.RGBA}\n      */\n      hexToRgba (hex) {\n        if (hex === '' || hex === 'none') return {r: null, g: null, b: null, a: null};\n        hex = this.validateHex(hex);\n        let r = '00', g = '00', b = '00', a = '255';\n        if (hex.length === 6) hex += 'ff';\n        if (hex.length > 6) {\n          r = hex.substring(0, 2);\n          g = hex.substring(2, 4);\n          b = hex.substring(4, 6);\n          a = hex.substring(6, hex.length);\n        } else {\n          if (hex.length > 4) {\n            r = hex.substring(4, hex.length);\n            hex = hex.substring(0, 4);\n          }\n          if (hex.length > 2) {\n            g = hex.substring(2, hex.length);\n            hex = hex.substring(0, 2);\n          }\n          if (hex.length > 0) b = hex.substring(0, hex.length);\n        }\n        return {\n          r: this.hexToInt(r), g: this.hexToInt(g), b: this.hexToInt(b), a: this.hexToInt(a)\n        };\n      },\n      /**\n      * @param {string} hex\n      * @returns {string}\n      */\n      validateHex (hex) {\n        // if (typeof hex === 'object') return '';\n        hex = hex.toLowerCase().replace(/[^a-f0-9]/g, '');\n        if (hex.length > 8) hex = hex.substring(0, 8);\n        return hex;\n      },\n      /**\n      * @param {module:jPicker.RGBA} rgba\n      * @returns {string}\n      */\n      rgbaToHex (rgba) {\n        return this.intToHex(rgba.r) + this.intToHex(rgba.g) + this.intToHex(rgba.b) + this.intToHex(rgba.a);\n      },\n      /**\n      * @param {Integer} dec\n      * @returns {string}\n      */\n      intToHex (dec) {\n        let result = (dec | 0).toString(16);\n        if (result.length === 1) result = ('0' + result);\n        return result.toLowerCase();\n      },\n      /**\n      * @param {string} hex\n      * @returns {Integer}\n      */\n      hexToInt (hex) {\n        return parseInt(hex, 16);\n      },\n      /**\n      * @typedef {PlainObject} module:jPicker.HSV\n      * @property {Integer} h\n      * @property {Integer} s\n      * @property {Integer} v\n      */\n      /**\n      * @param {module:jPicker.RGB} rgb\n      * @returns {module:jPicker.HSV}\n      */\n      rgbToHsv (rgb) {\n        const r = rgb.r / 255, g = rgb.g / 255, b = rgb.b / 255, hsv = {h: 0, s: 0, v: 0};\n        let min = 0, max = 0;\n        if (r >= g && r >= b) {\n          max = r;\n          min = g > b ? b : g;\n        } else if (g >= b && g >= r) {\n          max = g;\n          min = r > b ? b : r;\n        } else {\n          max = b;\n          min = g > r ? r : g;\n        }\n        hsv.v = max;\n        hsv.s = max ? (max - min) / max : 0;\n        let delta;\n        if (!hsv.s) hsv.h = 0;\n        else {\n          delta = max - min;\n          if (r === max) hsv.h = (g - b) / delta;\n          else if (g === max) hsv.h = 2 + (b - r) / delta;\n          else hsv.h = 4 + (r - g) / delta;\n          hsv.h = parseInt(hsv.h * 60);\n          if (hsv.h < 0) hsv.h += 360;\n        }\n        hsv.s = (hsv.s * 100) | 0;\n        hsv.v = (hsv.v * 100) | 0;\n        return hsv;\n      },\n      /**\n      * @param {module:jPicker.HSV} hsv\n      * @returns {module:jPicker.RGB}\n      */\n      hsvToRgb (hsv) {\n        const rgb = {r: 0, g: 0, b: 0, a: 100};\n        let {h, s, v} = hsv;\n        if (s === 0) {\n          if (v === 0) rgb.r = rgb.g = rgb.b = 0;\n          else rgb.r = rgb.g = rgb.b = (v * 255 / 100) | 0;\n        } else {\n          if (h === 360) h = 0;\n          h /= 60;\n          s /= 100;\n          v /= 100;\n          const i = h | 0,\n            f = h - i,\n            p = v * (1 - s),\n            q = v * (1 - (s * f)),\n            t = v * (1 - (s * (1 - f)));\n          switch (i) {\n          case 0:\n            rgb.r = v;\n            rgb.g = t;\n            rgb.b = p;\n            break;\n          case 1:\n            rgb.r = q;\n            rgb.g = v;\n            rgb.b = p;\n            break;\n          case 2:\n            rgb.r = p;\n            rgb.g = v;\n            rgb.b = t;\n            break;\n          case 3:\n            rgb.r = p;\n            rgb.g = q;\n            rgb.b = v;\n            break;\n          case 4:\n            rgb.r = t;\n            rgb.g = p;\n            rgb.b = v;\n            break;\n          case 5:\n            rgb.r = v;\n            rgb.g = p;\n            rgb.b = q;\n            break;\n          }\n          rgb.r = (rgb.r * 255) | 0;\n          rgb.g = (rgb.g * 255) | 0;\n          rgb.b = (rgb.b * 255) | 0;\n        }\n        return rgb;\n      }\n    }\n  };\n  const {Color, List, ColorMethods} = $.jPicker; // local copies for YUI compressor\n  /**\n   * @function external:jQuery.fn.jPicker\n   * @see {@link external:jQuery.fn.$.fn.jPicker}\n   */\n\n  /**\n  * Will be bound to active {@link jQuery.jPicker.Color}\n  * @callback module:jPicker.LiveCallback\n  * @param {external:jQuery} ui\n  * @param {Element} context\n  * @returns {undefined}\n  */\n  /**\n  * @callback module:jPicker.CommitCallback\n  * @param {external:jQuery.jPicker.Color} activeColor\n  * @param {external:jQuery} okButton\n  * @returns {undefined} Return value not used.\n  */\n  /**\n   * @callback module:jPicker.CancelCallback\n   * @param {external:jQuery.jPicker.Color} activeColor\n   * @param {external:jQuery} cancelButton\n   * @returns {undefined} Return value not used.\n   */\n  /**\n  * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't\n  *   get us treated as a function as well as a namespace (even with `@function name`),\n  *   so we use an approach to add a redundant `$.fn.` in the name.\n  * @namespace\n  * @memberof external:jQuery.fn\n  * @param {external:jQuery.fn.jPickerOptions} options\n  * @param {module:jPicker.CommitCallback} [commitCallback]\n  * @param {module:jPicker.LiveCallback} [liveCallback]\n  * @param {module:jPicker.CancelCallback} [cancelCallback]\n  * @returns {external:jQuery}\n  */\n  $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {\n    return this.each(function () {\n      const that = this,\n        settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor\n      if ($(that).get(0).nodeName.toLowerCase() === 'input') { // Add color picker icon if binding to an input element and bind the events to the input\n        $.extend(true, settings, {\n          window: {\n            bindToInput: true,\n            expandable: true,\n            input: $(that)\n          }\n        });\n        if ($(that).val() === '') {\n          settings.color.active = new Color({hex: null});\n          settings.color.current = new Color({hex: null});\n        } else if (ColorMethods.validateHex($(that).val())) {\n          settings.color.active = new Color({hex: $(that).val(), a: settings.color.active.val('a')});\n          settings.color.current = new Color({hex: $(that).val(), a: settings.color.active.val('a')});\n        }\n      }\n      if (settings.window.expandable) {\n        $(that).after('<span class=\"jPicker\"><span class=\"Icon\"><span class=\"Color\">&nbsp;</span><span class=\"Alpha\">&nbsp;</span><span class=\"Image\" title=\"Click To Open Color Picker\">&nbsp;</span><span class=\"Container\">&nbsp;</span></span></span>');\n      } else {\n        settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results\n      }\n      const isLessThanIE7 = parseFloat(navigator.appVersion.split('MSIE')[1]) < 7 && document.body.filters; // needed to run the AlphaImageLoader function for IE6\n      // set color mode and update visuals for the new color mode\n      /**\n       *\n       * @param {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} colorMode\n       * @throws {Error} Invalid mode\n       * @returns {undefined}\n       */\n      function setColorMode (colorMode) {\n        const {active} = color, // local copies for YUI compressor\n          // {clientPath} = images,\n          hex = active.val('hex');\n        let rgbMap, rgbBar;\n        settings.color.mode = colorMode;\n        switch (colorMode) {\n        case 'h':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setImgLoc.call(that, colorMapL1, 0);\n            setAlpha.call(that, colorMapL1, 100);\n            setImgLoc.call(that, colorMapL2, 260);\n            setAlpha.call(that, colorMapL2, 100);\n            setBG.call(that, colorBarDiv, 'transparent');\n            setImgLoc.call(that, colorBarL1, 0);\n            setAlpha.call(that, colorBarL1, 100);\n            setImgLoc.call(that, colorBarL2, 260);\n            setAlpha.call(that, colorBarL2, 100);\n            setImgLoc.call(that, colorBarL3, 260);\n            setAlpha.call(that, colorBarL3, 100);\n            setImgLoc.call(that, colorBarL4, 260);\n            setAlpha.call(that, colorBarL4, 100);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 100, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 360});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('s'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 360 - active.val('h'), colorBar);\n          break;\n        case 's':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setImgLoc.call(that, colorMapL1, -260);\n            setImgLoc.call(that, colorMapL2, -520);\n            setImgLoc.call(that, colorBarL1, -260);\n            setImgLoc.call(that, colorBarL2, -520);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 100 - active.val('s'), colorBar);\n          break;\n        case 'v':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, '000000');\n            setImgLoc.call(that, colorMapL1, -780);\n            setImgLoc.call(that, colorMapL2, 260);\n            setBG.call(that, colorBarDiv, hex);\n            setImgLoc.call(that, colorBarL1, -520);\n            setImgLoc.call(that, colorBarL2, 260);\n            setAlpha.call(that, colorBarL2, 100);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('s')}, colorMap);\n          colorBar.val('y', 100 - active.val('v'), colorBar);\n          break;\n        case 'r':\n          rgbMap = -1040;\n          rgbBar = -780;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('r'), colorBar);\n          break;\n        case 'g':\n          rgbMap = -1560;\n          rgbBar = -1820;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('r')}, colorMap);\n          colorBar.val('y', 255 - active.val('g'), colorBar);\n          break;\n        case 'b':\n          rgbMap = -2080;\n          rgbBar = -2860;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('r'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('b'), colorBar);\n          break;\n        case 'a':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setImgLoc.call(that, colorMapL1, -260);\n            setImgLoc.call(that, colorMapL2, -520);\n            setImgLoc.call(that, colorBarL1, 260);\n            setImgLoc.call(that, colorBarL2, 260);\n            setAlpha.call(that, colorBarL2, 100);\n            setImgLoc.call(that, colorBarL6, 0);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 255 - active.val('a'), colorBar);\n          break;\n        default:\n          throw new Error('Invalid Mode');\n        }\n        switch (colorMode) {\n        case 'h':\n          break;\n        case 's':\n        case 'v':\n        case 'a':\n          setTimeout(function () {\n            setAlpha.call(that, colorMapL1, 100);\n            setAlpha.call(that, colorBarL1, 100);\n            setImgLoc.call(that, colorBarL3, 260);\n            setAlpha.call(that, colorBarL3, 100);\n            setImgLoc.call(that, colorBarL4, 260);\n            setAlpha.call(that, colorBarL4, 100);\n          }, 0);\n          break;\n        case 'r':\n        case 'g':\n        case 'b':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setBG.call(that, colorBarDiv, 'transparent');\n            setAlpha.call(that, colorBarL1, 100);\n            setAlpha.call(that, colorMapL1, 100);\n            setImgLoc.call(that, colorMapL1, rgbMap);\n            setImgLoc.call(that, colorMapL2, rgbMap - 260);\n            setImgLoc.call(that, colorBarL1, rgbBar - 780);\n            setImgLoc.call(that, colorBarL2, rgbBar - 520);\n            setImgLoc.call(that, colorBarL3, rgbBar);\n            setImgLoc.call(that, colorBarL4, rgbBar - 260);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          break;\n        }\n        if (isNullish(active.val('ahex'))) return;\n        activeColorChanged.call(that, active);\n      }\n      /**\n       * Update color when user changes text values.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function activeColorChanged (ui, context) {\n        if (isNullish(context) || (context !== colorBar && context !== colorMap)) positionMapAndBarArrows.call(that, ui, context);\n        setTimeout(function () {\n          updatePreview.call(that, ui);\n          updateMapVisuals.call(that, ui);\n          updateBarVisuals.call(that, ui);\n        }, 0);\n      }\n\n      /**\n       * User has dragged the ColorMap pointer.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function mapValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorMap && isNullish(active.val())) return;\n        const xy = ui.val('all');\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('sv', {s: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 's':\n        case 'a':\n          active.val('hv', {h: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 'v':\n          active.val('hs', {h: xy.x, s: 100 - xy.y}, context);\n          break;\n        case 'r':\n          active.val('gb', {g: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'g':\n          active.val('rb', {r: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'b':\n          active.val('rg', {r: xy.x, g: 255 - xy.y}, context);\n          break;\n        }\n      }\n\n      /**\n       * User has dragged the ColorBar slider.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function colorBarValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorBar && isNullish(active.val())) return;\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('h', {h: 360 - ui.val('y')}, context);\n          break;\n        case 's':\n          active.val('s', {s: 100 - ui.val('y')}, context);\n          break;\n        case 'v':\n          active.val('v', {v: 100 - ui.val('y')}, context);\n          break;\n        case 'r':\n          active.val('r', {r: 255 - ui.val('y')}, context);\n          break;\n        case 'g':\n          active.val('g', {g: 255 - ui.val('y')}, context);\n          break;\n        case 'b':\n          active.val('b', {b: 255 - ui.val('y')}, context);\n          break;\n        case 'a':\n          active.val('a', 255 - ui.val('y'), context);\n          break;\n        }\n      }\n\n      /**\n       * Position map and bar arrows to match current color.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function positionMapAndBarArrows (ui, context) {\n        if (context !== colorMap) {\n          switch (settings.color.mode) {\n          case 'h': {\n            const sv = ui.val('sv');\n            colorMap.val('xy', {x: !isNullish(sv) ? sv.s : 100, y: 100 - (!isNullish(sv) ? sv.v : 100)}, context);\n            break;\n          } case 's':\n          // Fall through\n          case 'a': {\n            const hv = ui.val('hv');\n            colorMap.val('xy', {x: (hv && hv.h) || 0, y: 100 - (!isNullish(hv) ? hv.v : 100)}, context);\n            break;\n          } case 'v': {\n            const hs = ui.val('hs');\n            colorMap.val('xy', {x: (hs && hs.h) || 0, y: 100 - (!isNullish(hs) ? hs.s : 100)}, context);\n            break;\n          } case 'r': {\n            const bg = ui.val('bg');\n            colorMap.val('xy', {x: (bg && bg.b) || 0, y: 255 - ((bg && bg.g) || 0)}, context);\n            break;\n          } case 'g': {\n            const br = ui.val('br');\n            colorMap.val('xy', {x: (br && br.b) || 0, y: 255 - ((br && br.r) || 0)}, context);\n            break;\n          } case 'b': {\n            const rg = ui.val('rg');\n            colorMap.val('xy', {x: (rg && rg.r) || 0, y: 255 - ((rg && rg.g) || 0)}, context);\n            break;\n          }\n          }\n        }\n        if (context !== colorBar) {\n          switch (settings.color.mode) {\n          case 'h':\n            colorBar.val('y', 360 - (ui.val('h') || 0), context);\n            break;\n          case 's': {\n            const s = ui.val('s');\n            colorBar.val('y', 100 - (!isNullish(s) ? s : 100), context);\n            break;\n          } case 'v': {\n            const v = ui.val('v');\n            colorBar.val('y', 100 - (!isNullish(v) ? v : 100), context);\n            break;\n          } case 'r':\n            colorBar.val('y', 255 - (ui.val('r') || 0), context);\n            break;\n          case 'g':\n            colorBar.val('y', 255 - (ui.val('g') || 0), context);\n            break;\n          case 'b':\n            colorBar.val('y', 255 - (ui.val('b') || 0), context);\n            break;\n          case 'a': {\n            const a = ui.val('a');\n            colorBar.val('y', 255 - (!isNullish(a) ? a : 255), context);\n            break;\n          }\n          }\n        }\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function updatePreview (ui) {\n        try {\n          const all = ui.val('all');\n          activePreview.css({backgroundColor: (all && '#' + all.hex) || 'transparent'});\n          setAlpha.call(that, activePreview, (all && toFixedNumeric((all.a * 100) / 255, 4)) || 0);\n        } catch (e) { }\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function updateMapVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h':\n          setBG.call(that, colorMapDiv, new Color({h: ui.val('h') || 0, s: 100, v: 100}).val('hex'));\n          break;\n        case 's':\n        case 'a': {\n          const s = ui.val('s');\n          setAlpha.call(that, colorMapL2, 100 - (!isNullish(s) ? s : 100));\n          break;\n        } case 'v': {\n          const v = ui.val('v');\n          setAlpha.call(that, colorMapL1, !isNullish(v) ? v : 100);\n          break;\n        } case 'r':\n          setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));\n          break;\n        case 'g':\n          setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));\n          break;\n        case 'b':\n          setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));\n          break;\n        }\n        const a = ui.val('a');\n        setAlpha.call(that, colorMapL3, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function updateBarVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h': {\n          const a = ui.val('a');\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n          break;\n        } case 's': {\n          const hva = ui.val('hva'),\n            saturatedColor = new Color({h: (hva && hva.h) || 0, s: 100, v: !isNullish(hva) ? hva.v : 100});\n          setBG.call(that, colorBarDiv, saturatedColor.val('hex'));\n          setAlpha.call(that, colorBarL2, 100 - (!isNullish(hva) ? hva.v : 100));\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - ((hva && hva.a) || 0)) * 100) / 255, 4));\n          break;\n        } case 'v': {\n          const hsa = ui.val('hsa'),\n            valueColor = new Color({h: (hsa && hsa.h) || 0, s: !isNullish(hsa) ? hsa.s : 100, v: 100});\n          setBG.call(that, colorBarDiv, valueColor.val('hex'));\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - ((hsa && hsa.a) || 0)) * 100) / 255, 4));\n          break;\n        } case 'r':\n        case 'g':\n        case 'b': {\n          const rgba = ui.val('rgba');\n          let hValue = 0, vValue = 0;\n          if (settings.color.mode === 'r') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          } else if (settings.color.mode === 'g') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.r) || 0;\n          } else if (settings.color.mode === 'b') {\n            hValue = (rgba && rgba.r) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          }\n          const middle = vValue > hValue ? hValue : vValue;\n          setAlpha.call(that, colorBarL2, hValue > vValue ? toFixedNumeric(((hValue - vValue) / (255 - vValue)) * 100, 4) : 0);\n          setAlpha.call(that, colorBarL3, vValue > hValue ? toFixedNumeric(((vValue - hValue) / (255 - hValue)) * 100, 4) : 0);\n          setAlpha.call(that, colorBarL4, toFixedNumeric((middle / 255) * 100, 4));\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - ((rgba && rgba.a) || 0)) * 100) / 255, 4));\n          break;\n        } case 'a': {\n          const a = ui.val('a');\n          setBG.call(that, colorBarDiv, ui.val('hex') || '000000');\n          setAlpha.call(that, colorBarL5, !isNullish(a) ? 0 : 100);\n          setAlpha.call(that, colorBarL6, !isNullish(a) ? 100 : 0);\n          break;\n        }\n        }\n      }\n      /**\n      * @param {external:jQuery} el\n      * @param {string} [c=\"transparent\"]\n      * @returns {undefined}\n      */\n      function setBG (el, c) {\n        el.css({backgroundColor: (c && c.length === 6 && '#' + c) || 'transparent'});\n      }\n\n      /**\n      * @param {external:jQuery} img\n      * @param {string} src The image source\n      * @returns {undefined}\n      */\n      function setImg (img, src) {\n        if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {\n          img.attr('pngSrc', src);\n          img.css({backgroundImage: 'none', filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\')'});\n        } else img.css({backgroundImage: 'url(\\'' + src + '\\')'});\n      }\n      /**\n      * @param {external:jQuery} img\n      * @param {Float} y\n      * @returns {undefined}\n      */\n      function setImgLoc (img, y) {\n        img.css({top: y + 'px'});\n      }\n      /**\n      * @param {external:jQuery} obj\n      * @param {Float} alpha\n      * @returns {undefined}\n      */\n      function setAlpha (obj, alpha) {\n        obj.css({visibility: alpha > 0 ? 'visible' : 'hidden'});\n        if (alpha > 0 && alpha < 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (!isNullish(src) && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({\n                filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src +\n                  '\\', sizingMethod=\\'scale\\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'\n              });\n            } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n          } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n        } else if (alpha === 0 || alpha === 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (!isNullish(src) && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({\n                filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src +\n                '\\', sizingMethod=\\'scale\\')'\n              });\n            } else obj.css({opacity: ''});\n          } else obj.css({opacity: ''});\n        }\n      }\n\n      /**\n      * Revert color to original color when opened.\n      * @returns {undefined}\n      */\n      function revertColor () {\n        color.active.val('ahex', color.current.val('ahex'));\n      }\n      /**\n      * Commit the color changes.\n      * @returns {undefined}\n      */\n      function commitColor () {\n        color.current.val('ahex', color.active.val('ahex'));\n      }\n      /**\n      * @param {Event} e\n      * @returns {undefined}\n      */\n      function radioClicked (e) {\n        $(this).parents('tbody:first').find('input:radio[value!=\"' + e.target.value + '\"]').removeAttr('checked');\n        setColorMode.call(that, e.target.value);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function currentClicked () {\n        revertColor.call(that);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function cancelClicked () {\n        revertColor.call(that);\n        settings.window.expandable && hide.call(that);\n        typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function okClicked () {\n        commitColor.call(that);\n        settings.window.expandable && hide.call(that);\n        typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function iconImageClicked () {\n        show.call(that);\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function currentColorChanged (ui) {\n        const hex = ui.val('hex');\n        currentPreview.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call(that, currentPreview, toFixedNumeric(((ui.val('a') || 0) * 100) / 255, 4));\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function expandableColorChanged (ui) {\n        const hex = ui.val('hex');\n        const va = ui.val('va');\n        iconColor.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call(that, iconAlpha, toFixedNumeric(((255 - ((va && va.a) || 0)) * 100) / 255, 4));\n        if (settings.window.bindToInput && settings.window.updateInputColor) {\n          settings.window.input.css({\n            backgroundColor: (hex && '#' + hex) || 'transparent',\n            color: isNullish(va) || va.v > 75 ? '#000000' : '#ffffff'\n          });\n        }\n      }\n      /**\n      * @param {Event} e\n      * @returns {undefined}\n      */\n      function moveBarMouseDown (e) {\n        // const {element} = settings.window, // local copies for YUI compressor\n        //     {page} = settings.window;\n        elementStartX = parseInt(container.css('left'));\n        elementStartY = parseInt(container.css('top'));\n        pageStartX = e.pageX;\n        pageStartY = e.pageY;\n        // bind events to document to move window - we will unbind these on mouseup\n        $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);\n        e.preventDefault(); // prevent attempted dragging of the column\n      }\n      /**\n      * @param {Event} e\n      * @returns {false}\n      */\n      function documentMouseMove (e) {\n        container.css({\n          left: elementStartX - (pageStartX - e.pageX) + 'px',\n          top: elementStartY - (pageStartY - e.pageY) + 'px'\n        });\n        if (settings.window.expandable && !$.support.boxModel) {\n          container.prev().css({\n            left: container.css('left'),\n            top: container.css('top')\n          });\n        }\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      /**\n      * @param {Event} e\n      * @returns {false}\n      */\n      function documentMouseUp (e) {\n        $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      /**\n      * @param {Event} e\n      * @returns {false}\n      */\n      function quickPickClicked (e) {\n        e.preventDefault();\n        e.stopPropagation();\n        color.active.val('ahex', $(this).attr('title') || null, e.target);\n        return false;\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function show () {\n        color.current.val('ahex', color.active.val('ahex'));\n        /**\n        *\n        * @returns {undefined}\n        */\n        function attachIFrame () {\n          if (!settings.window.expandable || $.support.boxModel) return;\n          const table = container.find('table:first');\n          container.before('<iframe/>');\n          container.prev().css({\n            width: table.width(),\n            height: container.height(),\n            opacity: 0,\n            position: 'absolute',\n            left: container.css('left'),\n            top: container.css('top')\n          });\n        }\n        if (settings.window.expandable) {\n          $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n          container.css({zIndex: 20});\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeIn(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'slide':\n          container.slideDown(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'show':\n        default:\n          container.show(settings.window.effects.speed.show, attachIFrame);\n          break;\n        }\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function hide () {\n        /**\n        *\n        * @returns {undefined}\n        */\n        function removeIFrame () {\n          if (settings.window.expandable) container.css({zIndex: 10});\n          if (!settings.window.expandable || $.support.boxModel) return;\n          container.prev().remove();\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeOut(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'slide':\n          container.slideUp(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'show':\n        default:\n          container.hide(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        }\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function initialize () {\n        const win = settings.window,\n          popup = win.expandable ? $(that).next().find('.Container:first') : null;\n        container = win.expandable ? $('<div/>') : $(that);\n        container.addClass('jPicker Container');\n        if (win.expandable) container.hide();\n        container.get(0).onselectstart = function (e) {\n          if (e.target.nodeName.toLowerCase() !== 'input') return false;\n          return true;\n        };\n        // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and\n        // this control really is tabular data, so I believe it is the right move\n        const all = color.active.val('all');\n        if (win.alphaPrecision < 0) win.alphaPrecision = 0;\n        else if (win.alphaPrecision > 2) win.alphaPrecision = 2;\n        const controlHtml = `<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ${win.expandable ? `<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>` : ''}\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">${win.title || localization.text.title}</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"${images.clientPath + images.colorMap.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"${images.clientPath + images.colorBar.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">${localization.text.newColor}<div><span class=\"Active\" title=\"${localization.tooltips.colors.newColor}\">&nbsp;</span><span class=\"Current\" title=\"${localization.tooltips.colors.currentColor}\">&nbsp;</span></div>${localization.text.currentColor}</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"${localization.text.ok}\" title=\"${localization.tooltips.buttons.ok}\"/><input type=\"button\" class=\"Cancel\" value=\"${localization.text.cancel}\" title=\"${localization.tooltips.buttons.cancel}\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.hue.radio}\"><input type=\"radio\" value=\"h\"${settings.color.mode === 'h' ? ' checked=\"checked\"' : ''}/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.h : ''}\" title=\"${localization.tooltips.hue.textbox}\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.saturation.radio}\"><input type=\"radio\" value=\"s\"${settings.color.mode === 's' ? ' checked=\"checked\"' : ''}/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.s : ''}\" title=\"${localization.tooltips.saturation.textbox}\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.value.radio}\"><input type=\"radio\" value=\"v\"${settings.color.mode === 'v' ? ' checked=\"checked\"' : ''}/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.v : ''}\" title=\"${localization.tooltips.value.textbox}\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.red.radio}\"><input type=\"radio\" value=\"r\"${settings.color.mode === 'r' ? ' checked=\"checked\"' : ''}/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.r : ''}\" title=\"${localization.tooltips.red.textbox}\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.green.radio}\"><input type=\"radio\" value=\"g\"${settings.color.mode === 'g' ? ' checked=\"checked\"' : ''}/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.g : ''}\" title=\"${localization.tooltips.green.textbox}\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.blue.radio}\"><input type=\"radio\" value=\"b\"${settings.color.mode === 'b' ? ' checked=\"checked\"' : ''}/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.b : ''}\" title=\"${localization.tooltips.blue.textbox}\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">${win.alphaSupport ? `<label title=\"${localization.tooltips.alpha.radio}\"><input type=\"radio\" value=\"a\"${settings.color.mode === 'a' ? ' checked=\"checked\"' : ''}/>A:</label>` : '&nbsp;'}</td>\n              <td class=\"Text\">${win.alphaSupport ? `<input type=\"text\" maxlength=\"${3 + win.alphaPrecision}\" value=\"${!isNullish(all) ? toFixedNumeric((all.a * 100) / 255, win.alphaPrecision) : ''}\" title=\"${localization.tooltips.alpha.textbox}\"/>&nbsp;%` : '&nbsp;'}</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"${localization.tooltips.hex.textbox}\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"${!isNullish(all) ? all.hex : ''}\"/></label>${win.alphaSupport ? `<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"${!isNullish(all) ? all.ahex.substring(6) : ''}\" title=\"${localization.tooltips.hex.alpha}\"/></td>` : '&nbsp;'}\n            </tr>\n          </tbody></table>`;\n        if (win.expandable) {\n          container.html(controlHtml);\n          if (!$(document.body).children('div.jPicker.Container').length) {\n            $(document.body).prepend(container);\n          } else {\n            $(document.body).children('div.jPicker.Container:last').after(container);\n          }\n          container.mousedown(\n            function () {\n              $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n              container.css({zIndex: 20});\n            }\n          );\n          container.css( // positions must be set and display set to absolute before source code injection or IE will size the container to fit the window\n            {\n              left:\n                win.position.x === 'left'\n                  ? (popup.offset().left - 530 - (win.position.y === 'center' ? 25 : 0)) + 'px'\n                  : win.position.x === 'center'\n                    ? (popup.offset().left - 260) + 'px'\n                    : win.position.x === 'right'\n                      ? (popup.offset().left - 10 + (win.position.y === 'center' ? 25 : 0)) + 'px'\n                      : win.position.x === 'screenCenter'\n                        ? (($(document).width() >> 1) - 260) + 'px'\n                        : (popup.offset().left + parseInt(win.position.x)) + 'px',\n              position: 'absolute',\n              top: win.position.y === 'top'\n                ? (popup.offset().top - 312) + 'px'\n                : win.position.y === 'center'\n                  ? (popup.offset().top - 156) + 'px'\n                  : win.position.y === 'bottom'\n                    ? (popup.offset().top + 25) + 'px'\n                    : (popup.offset().top + parseInt(win.position.y)) + 'px'\n            }\n          );\n        } else {\n          container = $(that);\n          container.html(controlHtml);\n        }\n        // initialize the objects to the source code just injected\n        const tbody = container.find('tbody:first');\n        colorMapDiv = tbody.find('div.Map:first');\n        colorBarDiv = tbody.find('div.Bar:first');\n        const MapMaps = colorMapDiv.find('span');\n        const BarMaps = colorBarDiv.find('span');\n        colorMapL1 = MapMaps.filter('.Map1:first');\n        colorMapL2 = MapMaps.filter('.Map2:first');\n        colorMapL3 = MapMaps.filter('.Map3:first');\n        colorBarL1 = BarMaps.filter('.Map1:first');\n        colorBarL2 = BarMaps.filter('.Map2:first');\n        colorBarL3 = BarMaps.filter('.Map3:first');\n        colorBarL4 = BarMaps.filter('.Map4:first');\n        colorBarL5 = BarMaps.filter('.Map5:first');\n        colorBarL6 = BarMaps.filter('.Map6:first');\n        // create color pickers and maps\n        colorMap = new Slider(\n          colorMapDiv,\n          {\n            map: {\n              width: images.colorMap.width,\n              height: images.colorMap.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorMap.arrow.file,\n              width: images.colorMap.arrow.width,\n              height: images.colorMap.arrow.height\n            }\n          }\n        );\n        colorMap.bind(mapValueChanged);\n        colorBar = new Slider(\n          colorBarDiv,\n          {\n            map: {\n              width: images.colorBar.width,\n              height: images.colorBar.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorBar.arrow.file,\n              width: images.colorBar.arrow.width,\n              height: images.colorBar.arrow.height\n            }\n          }\n        );\n        colorBar.bind(colorBarValueChanged);\n        colorPicker = new ColorValuePicker(\n          tbody,\n          color.active,\n          win.expandable && win.bindToInput ? win.input : null,\n          win.alphaPrecision\n        );\n        const hex = !isNullish(all) ? all.hex : null,\n          preview = tbody.find('.Preview'),\n          button = tbody.find('.Button');\n        activePreview = preview.find('.Active:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        currentPreview = preview.find('.Current:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'}).bind('click', currentClicked);\n        setAlpha.call(that, currentPreview, toFixedNumeric((color.current.val('a') * 100) / 255, 4));\n        okButton = button.find('.Ok:first').bind('click', okClicked);\n        cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);\n        grid = button.find('.Grid:first');\n        setTimeout(function () {\n          setImg.call(that, colorMapL1, images.clientPath + 'Maps.png');\n          setImg.call(that, colorMapL2, images.clientPath + 'Maps.png');\n          setImg.call(that, colorMapL3, images.clientPath + 'map-opacity.png');\n          setImg.call(that, colorBarL1, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL2, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL3, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL4, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL5, images.clientPath + 'bar-opacity.png');\n          setImg.call(that, colorBarL6, images.clientPath + 'AlphaBar.png');\n          setImg.call(that, preview.find('div:first'), images.clientPath + 'preview-opacity.png');\n        }, 0);\n        tbody.find('td.Radio input').bind('click', radioClicked);\n        // initialize quick list\n        if (color.quickList && color.quickList.length > 0) {\n          let html = '';\n          for (let i = 0; i < color.quickList.length; i++) {\n            /* if default colors are hex strings, change them to color objects */\n            if ((typeof (color.quickList[i])).toString().toLowerCase() === 'string') color.quickList[i] = new Color({hex: color.quickList[i]});\n            const alpha = color.quickList[i].val('a');\n            let ahex = color.quickList[i].val('ahex');\n            if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';\n            const quickHex = color.quickList[i].val('hex');\n            if (!ahex) ahex = '00000000';\n            html += '<span class=\"QuickColor\"' + (' title=\"#' + ahex + '\"') + ' style=\"background-color:' + ((quickHex && '#' + quickHex) || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '\">&nbsp;</span>';\n          }\n          setImg.call(that, grid, images.clientPath + 'bar-opacity.png');\n          grid.html(html);\n          grid.find('.QuickColor').click(quickPickClicked);\n        }\n        setColorMode.call(that, settings.color.mode);\n        color.active.bind(activeColorChanged);\n        typeof liveCallback === 'function' && color.active.bind(liveCallback);\n        color.current.bind(currentColorChanged);\n        // bind to input\n        if (win.expandable) {\n          that.icon = popup.parents('.Icon:first');\n          iconColor = that.icon.find('.Color:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n          iconAlpha = that.icon.find('.Alpha:first');\n          setImg.call(that, iconAlpha, images.clientPath + 'bar-opacity.png');\n          setAlpha.call(that, iconAlpha, toFixedNumeric(((255 - (!isNullish(all) ? all.a : 0)) * 100) / 255, 4));\n          iconImage = that.icon.find('.Image:first').css({\n            backgroundImage: 'url(\\'' + images.clientPath + images.picker.file + '\\')'\n          }).bind('click', iconImageClicked);\n          if (win.bindToInput && win.updateInputColor) {\n            win.input.css({\n              backgroundColor: (hex && '#' + hex) || 'transparent',\n              color: isNullish(all) || all.v > 75 ? '#000000' : '#ffffff'\n            });\n          }\n          moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);\n          color.active.bind(expandableColorChanged);\n        } else show.call(that);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function destroy () {\n        container.find('td.Radio input').unbind('click', radioClicked);\n        currentPreview.unbind('click', currentClicked);\n        cancelButton.unbind('click', cancelClicked);\n        okButton.unbind('click', okClicked);\n        if (settings.window.expandable) {\n          iconImage.unbind('click', iconImageClicked);\n          moveBar.unbind('mousedown', moveBarMouseDown);\n          that.icon = null;\n        }\n        container.find('.QuickColor').unbind('click', quickPickClicked);\n        colorMapDiv = null;\n        colorBarDiv = null;\n        colorMapL1 = null;\n        colorMapL2 = null;\n        colorMapL3 = null;\n        colorBarL1 = null;\n        colorBarL2 = null;\n        colorBarL3 = null;\n        colorBarL4 = null;\n        colorBarL5 = null;\n        colorBarL6 = null;\n        colorMap.destroy();\n        colorMap = null;\n        colorBar.destroy();\n        colorBar = null;\n        colorPicker.destroy();\n        colorPicker = null;\n        activePreview = null;\n        currentPreview = null;\n        okButton = null;\n        cancelButton = null;\n        grid = null;\n        commitCallback = null;\n        cancelCallback = null;\n        liveCallback = null;\n        container.html('');\n        for (let i = 0; i < List.length; i++) {\n          if (List[i] === that) {\n            List.splice(i, 1);\n          }\n        }\n      }\n      const {images, localization} = settings; // local copies for YUI compressor\n      const color = {\n        active: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active\n          })\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        current: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active})\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        quickList: settings.color.quickList\n      };\n\n      if (typeof commitCallback !== 'function') {\n        commitCallback = null;\n      }\n      if (typeof liveCallback !== 'function') {\n        liveCallback = null;\n      }\n      if (typeof cancelCallback !== 'function') {\n        cancelCallback = null;\n      }\n\n      let elementStartX = null, // Used to record the starting css positions for dragging the control\n        elementStartY = null,\n        pageStartX = null, // Used to record the mousedown coordinates for dragging the control\n        pageStartY = null,\n        container = null,\n        colorMapDiv = null,\n        colorBarDiv = null,\n        colorMapL1 = null, // different layers of colorMap and colorBar\n        colorMapL2 = null,\n        colorMapL3 = null,\n        colorBarL1 = null,\n        colorBarL2 = null,\n        colorBarL3 = null,\n        colorBarL4 = null,\n        colorBarL5 = null,\n        colorBarL6 = null,\n        colorMap = null, // color maps\n        colorBar = null,\n        colorPicker = null,\n        activePreview = null, // color boxes above the radio buttons\n        currentPreview = null,\n        okButton = null,\n        cancelButton = null,\n        grid = null, // preset colors grid\n        iconColor = null, // iconColor for popup icon\n        iconAlpha = null, // iconAlpha for popup icon\n        iconImage = null, // iconImage popup icon\n        moveBar = null; // drag bar\n\n      $.extend(true, that, {\n        // public properties, methods, and callbacks\n        commitCallback, // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks \"OK\"\n        liveCallback, // liveCallback function can be overridden to return the selected color to a method you specify in live mode (continuous update)\n        cancelCallback, // cancelCallback function can be overridden to a method you specify when the user clicks \"Cancel\"\n        color,\n        show,\n        hide,\n        destroy // destroys this control entirely, removing all events and objects, and removing itself from the List\n      });\n      List.push(that);\n      setTimeout(function () {\n        initialize.call(that);\n      }, 0);\n    });\n  };\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsIconInfo\n  * @property {string} file Color Map/Color Bar/Color Picker arrow icon\n  * @property {Float} width\n  * @property {Float} height\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsImagesDimensionsArrow\n  * @property {Float} width\n  * @property {Float} height\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} arrow\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsRadioTextboxLocale\n  * @property {string} radio\n  * @property {string} textbox\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptions\n  * @property {PlainObject} window\n  * @property {string|null} window.title Any title for the jPicker window itself - displays\n  * \"Drag Markers To Pick A Color\" if left null\n  * @property {PlainObject} window.effects\n  * @property {\"slide\"|\"show\"|\"fade\"} window.effects.type Effect used to show/hide an expandable picker\n  * @property {PlainObject} window.effects.speed\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.show Duration of \"show\" effect. Time in milliseconds.\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.hide Duration of \"hide\" effect. Time in milliseconds\n  * @property {PlainObject} window.position\n  * @property {\"left\"|\"center\"|\"right\"|\"screenCenter\"|Float} window.position.x Relative px value\n  * @property {\"top\"|\"bottom\"|\"center\"|Float} window.position.y Relative px value\n  * @property {boolean} window.expandable Defaults to large static picker - set to `true` to make an expandable\n  * picker (small icon with popup) - set automatically when binded to input element\n  * @property {boolean} window.liveUpdate Set `false` if you want the user to have to click \"OK\" before the\n  * binded input box updates values (always `true` for expandable picker)\n  * @property {boolean} window.alphaSupport Set to `true` to enable alpha picking\n  * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do\n  * not map directly to percentage integers - range 0-2\n  * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing\n  * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`\n  * @property {boolean} [window.expandable] Added by `$.fn.jPicker`\n  * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`\n  * @property {PlainObject} color\n  * @property {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} color.mode Symbols stand for \"h\" (hue), \"s\" (saturation), \"v\" (value), \"r\" (red), \"g\" (green), \"b\" (blue), \"a\" (alpha)\n  * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {Color[]|string[]} color.quickList The quick pick color list\n  * Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {PlainObject} images\n  * @property {string} images.clientPath Path to image files\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorMap\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorBar\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} images.picker\n  * @property {PlainObject} localization alter these to change the text presented by the picker (e.g. different language)\n  * @property {PlainObject} localization.text\n  * @property {string} localization.text.title\n  * @property {string} localization.text.newColor\n  * @property {string} localization.text.currentColor\n  * @property {string} localization.text.ok\n  * @property {string} localization.text.cancel\n  * @property {PlainObject} localization.tooltips\n  * @property {PlainObject} localization.tooltips.colors\n  * @property {string} localization.tooltips.colors.newColor\n  * @property {string} localization.tooltips.colors.currentColor\n  * @property {PlainObject} localization.tooltips.buttons\n  * @property {string} localization.tooltips.buttons.ok\n  * @property {string} localization.tooltips.buttons.cancel\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.hue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.saturation\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.value\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.red\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.green\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.blue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.alpha\n  * @property {PlainObject} localization.tooltips.hex\n  * @property {string} localization.tooltips.hex.textbox\n  * @property {string} localization.tooltips.hex.alpha\n  */\n  /**\n  * jPicker defaults - you can change anything in this section (such as the\n  * clientPath to your images) without fear of breaking the program\n  * @namespace {external:jQuery.fn.jPickerOptions} defaults\n  * @memberof external:jQuery.fn.$.fn.jPicker\n  * @borrows external:jQuery.fn.jPickerOptions as external:jQuery.fn.jPicker.defaults\n  * @see Source for all of the values\n  */\n  $.fn.jPicker.defaults = {\n    window: {\n      title: null,\n      effects: {\n        type: 'slide',\n        speed: {\n          show: 'slow',\n          hide: 'fast'\n        }\n      },\n      position: {\n        x: 'screenCenter',\n        y: 'top'\n      },\n      expandable: false,\n      liveUpdate: true,\n      alphaSupport: false,\n      alphaPrecision: 0,\n      updateInputColor: true\n    },\n    color: {\n      mode: 'h',\n      active: new Color({ahex: '#ffcc00ff'}),\n      quickList: [\n        new Color({h: 360, s: 33, v: 100}),\n        new Color({h: 360, s: 66, v: 100}),\n        new Color({h: 360, s: 100, v: 100}),\n        new Color({h: 360, s: 100, v: 75}),\n        new Color({h: 360, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 100}),\n        new Color({h: 30, s: 33, v: 100}),\n        new Color({h: 30, s: 66, v: 100}),\n        new Color({h: 30, s: 100, v: 100}),\n        new Color({h: 30, s: 100, v: 75}),\n        new Color({h: 30, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 90}),\n        new Color({h: 60, s: 33, v: 100}),\n        new Color({h: 60, s: 66, v: 100}),\n        new Color({h: 60, s: 100, v: 100}),\n        new Color({h: 60, s: 100, v: 75}),\n        new Color({h: 60, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 80}),\n        new Color({h: 90, s: 33, v: 100}),\n        new Color({h: 90, s: 66, v: 100}),\n        new Color({h: 90, s: 100, v: 100}),\n        new Color({h: 90, s: 100, v: 75}),\n        new Color({h: 90, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 70}),\n        new Color({h: 120, s: 33, v: 100}),\n        new Color({h: 120, s: 66, v: 100}),\n        new Color({h: 120, s: 100, v: 100}),\n        new Color({h: 120, s: 100, v: 75}),\n        new Color({h: 120, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 60}),\n        new Color({h: 150, s: 33, v: 100}),\n        new Color({h: 150, s: 66, v: 100}),\n        new Color({h: 150, s: 100, v: 100}),\n        new Color({h: 150, s: 100, v: 75}),\n        new Color({h: 150, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 50}),\n        new Color({h: 180, s: 33, v: 100}),\n        new Color({h: 180, s: 66, v: 100}),\n        new Color({h: 180, s: 100, v: 100}),\n        new Color({h: 180, s: 100, v: 75}),\n        new Color({h: 180, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 40}),\n        new Color({h: 210, s: 33, v: 100}),\n        new Color({h: 210, s: 66, v: 100}),\n        new Color({h: 210, s: 100, v: 100}),\n        new Color({h: 210, s: 100, v: 75}),\n        new Color({h: 210, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 30}),\n        new Color({h: 240, s: 33, v: 100}),\n        new Color({h: 240, s: 66, v: 100}),\n        new Color({h: 240, s: 100, v: 100}),\n        new Color({h: 240, s: 100, v: 75}),\n        new Color({h: 240, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 20}),\n        new Color({h: 270, s: 33, v: 100}),\n        new Color({h: 270, s: 66, v: 100}),\n        new Color({h: 270, s: 100, v: 100}),\n        new Color({h: 270, s: 100, v: 75}),\n        new Color({h: 270, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 10}),\n        new Color({h: 300, s: 33, v: 100}),\n        new Color({h: 300, s: 66, v: 100}),\n        new Color({h: 300, s: 100, v: 100}),\n        new Color({h: 300, s: 100, v: 75}),\n        new Color({h: 300, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 0}),\n        new Color({h: 330, s: 33, v: 100}),\n        new Color({h: 330, s: 66, v: 100}),\n        new Color({h: 330, s: 100, v: 100}),\n        new Color({h: 330, s: 100, v: 75}),\n        new Color({h: 330, s: 100, v: 50}),\n        new Color()\n      ]\n    },\n    images: {\n      clientPath: '/jPicker/images/',\n      colorMap: {\n        width: 256,\n        height: 256,\n        arrow: {\n          file: 'mappoint.gif',\n          width: 15,\n          height: 15\n        }\n      },\n      colorBar: {\n        width: 20,\n        height: 256,\n        arrow: {\n          file: 'rangearrows.gif',\n          width: 20,\n          height: 7\n        }\n      },\n      picker: {\n        file: 'picker.gif',\n        width: 25,\n        height: 24\n      }\n    },\n    localization: {\n      text: {\n        title: 'Drag Markers To Pick A Color',\n        newColor: 'new',\n        currentColor: 'current',\n        ok: 'OK',\n        cancel: 'Cancel'\n      },\n      tooltips: {\n        colors: {\n          newColor: 'New Color - Press &ldquo;OK&rdquo; To Commit',\n          currentColor: 'Click To Revert To Original Color'\n        },\n        buttons: {\n          ok: 'Commit To This Color Selection',\n          cancel: 'Cancel And Revert To Original Color'\n        },\n        hue: {\n          radio: 'Set To &ldquo;Hue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Hue&rdquo; Value (0-360&deg;)'\n        },\n        saturation: {\n          radio: 'Set To &ldquo;Saturation&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Saturation&rdquo; Value (0-100%)'\n        },\n        value: {\n          radio: 'Set To &ldquo;Value&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Value&rdquo; Value (0-100%)'\n        },\n        red: {\n          radio: 'Set To &ldquo;Red&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Red&rdquo; Value (0-255)'\n        },\n        green: {\n          radio: 'Set To &ldquo;Green&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Green&rdquo; Value (0-255)'\n        },\n        blue: {\n          radio: 'Set To &ldquo;Blue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Blue&rdquo; Value (0-255)'\n        },\n        alpha: {\n          radio: 'Set To &ldquo;Alpha&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Alpha&rdquo; Value (0-100)'\n        },\n        hex: {\n          textbox: 'Enter A &ldquo;Hex&rdquo; Color Value (#000000-#ffffff)',\n          alpha: 'Enter A &ldquo;Alpha&rdquo; Value (#00-#ff)'\n        }\n      }\n    }\n  };\n  return $;\n};\n\nexport default jPicker;\n","/* globals jQuery */\n/**\n * Localizing script for SVG-edit UI\n * @module locale\n * @license MIT\n *\n * @copyright 2010 Narendra Sisodya\n * @copyright 2010 Alexis Deveria\n *\n */\n\n/**\n * Used, for example, in the ImageLibs extension, to present libraries (with name/URL/description) in order\n * @typedef {GenericArray.<module:locale.LocaleStrings>} module:locale.LocaleArray\n*/\n/**\n * The string keys of the object are two-letter language codes\n * @tutorial LocaleDocs\n * @typedef {PlainObject.<string, string|module:locale.LocaleStrings|module:locale.LocaleArray>} module:locale.LocaleStrings\n */\n// keyed to an array of objects with \"id\" and \"title\" or \"textContent\" properties\n/**\n * @typedef {PlainObject.<string, string>} module:locale.LocaleSelectorValue\n */\n\nimport {importSetGlobalDefault} from '../external/dynamic-import-polyfill/importModule.js';\n\nconst $ = jQuery;\n\nlet langParam;\n\n/**\n* @param {\"content\"|\"title\"} type\n* @param {module:locale.LocaleSelectorValue} obj\n* @param {boolean} ids\n* @returns {undefined}\n*/\nexport const setStrings = function (type, obj, ids) {\n  // Root element to look for element from\n  const parent = $('#svg_editor').parent();\n  Object.entries(obj).forEach(([sel, val]) => {\n    if (!val) {\n      console.log(sel); // eslint-disable-line no-console\n    }\n\n    if (ids) { sel = '#' + sel; }\n    const $elem = parent.find(sel);\n    if ($elem.length) {\n      const elem = parent.find(sel)[0];\n\n      switch (type) {\n      case 'content':\n        [...elem.childNodes].some((node) => {\n          if (node.nodeType === 3 && node.textContent.trim()) {\n            node.textContent = val;\n            return true;\n          }\n          return false;\n        });\n        break;\n\n      case 'title':\n        elem.title = val;\n        break;\n      }\n    } else {\n      console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console\n    }\n  });\n};\n\n/**\n* The \"data\" property is generally set to an an array of objects with\n* \"id\" and \"title\" or \"textContent\" properties\n* @typedef {PlainObject} module:locale.AddLangExtensionLocaleData\n* @property {module:locale.LocaleStrings[]} data See {@tutorial LocaleDocs}\n*/\n\n/**\n* @interface module:locale.LocaleEditorInit\n*/\n/**\n * @function module:locale.LocaleEditorInit#addLangData\n * @param {string} langParam\n * @returns {module:locale.AddLangExtensionLocaleData}\n*/\n\nlet editor_;\n/**\n* @function init\n* @memberof module:locale\n* @param {module:locale.LocaleEditorInit} editor\n* @returns {undefined}\n*/\nexport const init = (editor) => {\n  editor_ = editor;\n};\n\n/**\n* @typedef {PlainObject} module:locale.LangAndData\n* @property {string} langParam\n* @property {module:locale.LocaleStrings} langData\n*/\n\n/**\n* @function module:locale.readLang\n* @param {module:locale.LocaleStrings} langData See {@tutorial LocaleDocs}\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @returns {Promise} Resolves to [`LangAndData`]{@link module:locale.LangAndData}\n*/\nexport const readLang = async function (langData) {\n  const more = await editor_.addLangData(langParam);\n  $.each(more, function (i, m) {\n    if (m.data) {\n      langData = $.merge(langData, m.data);\n    }\n  });\n\n  // Old locale file, do nothing for now.\n  if (!langData.tools) { return undefined; }\n\n  const {\n    tools,\n    // misc,\n    properties, config, layers, common, ui\n  } = langData;\n\n  setStrings('content', {\n    // copyrightLabel: misc.powered_by, // Currently commented out in svg-editor.html\n    curve_segments: properties.curve_segments,\n    fitToContent: tools.fitToContent,\n    fit_to_all: tools.fit_to_all,\n    fit_to_canvas: tools.fit_to_canvas,\n    fit_to_layer_content: tools.fit_to_layer_content,\n    fit_to_sel: tools.fit_to_sel,\n\n    icon_large: config.icon_large,\n    icon_medium: config.icon_medium,\n    icon_small: config.icon_small,\n    icon_xlarge: config.icon_xlarge,\n    image_opt_embed: config.image_opt_embed,\n    image_opt_ref: config.image_opt_ref,\n    includedImages: config.included_images,\n\n    largest_object: tools.largest_object,\n\n    layersLabel: layers.layers,\n    page: tools.page,\n    relativeToLabel: tools.relativeTo,\n    selLayerLabel: layers.move_elems_to,\n    selectedPredefined: config.select_predefined,\n\n    selected_objects: tools.selected_objects,\n    smallest_object: tools.smallest_object,\n    straight_segments: properties.straight_segments,\n\n    svginfo_bg_url: config.editor_img_url + ':',\n    svginfo_bg_note: config.editor_bg_note,\n    svginfo_change_background: config.background,\n    svginfo_dim: config.doc_dims,\n    svginfo_editor_prefs: config.editor_prefs,\n    svginfo_height: common.height,\n    svginfo_icons: config.icon_size,\n    svginfo_image_props: config.image_props,\n    svginfo_lang: config.language,\n    svginfo_title: config.doc_title,\n    svginfo_width: common.width,\n\n    tool_docprops_cancel: common.cancel,\n    tool_docprops_save: common.ok,\n\n    tool_source_cancel: common.cancel,\n    tool_source_save: common.ok,\n\n    tool_prefs_cancel: common.cancel,\n    tool_prefs_save: common.ok,\n\n    sidepanel_handle: layers.layers.split('').join(' '),\n\n    tool_clear: tools.new_doc,\n    tool_docprops: tools.docprops,\n    tool_export: tools.export_img,\n    tool_import: tools.import_doc,\n    tool_open: tools.open_doc,\n    tool_save: tools.save_doc,\n\n    svginfo_units_rulers: config.units_and_rulers,\n    svginfo_rulers_onoff: config.show_rulers,\n    svginfo_unit: config.base_unit,\n\n    svginfo_grid_settings: config.grid,\n    svginfo_snap_onoff: config.snapping_onoff,\n    svginfo_snap_step: config.snapping_stepsize,\n    svginfo_grid_color: config.grid_color\n  }, true);\n\n  // Context menus\n  const opts = {};\n  $.each(['cut', 'copy', 'paste', 'paste_in_place', 'delete', 'group', 'ungroup', 'move_front', 'move_up', 'move_down', 'move_back'], function () {\n    opts['#cmenu_canvas a[href=\"#' + this + '\"]'] = tools[this];\n  });\n\n  $.each(['dupe', 'merge_down', 'merge_all'], function () {\n    opts['#cmenu_layers a[href=\"#' + this + '\"]'] = layers[this];\n  });\n\n  opts['#cmenu_layers a[href=\"#delete\"]'] = layers.del;\n\n  setStrings('content', opts);\n\n  setStrings('title', {\n    align_relative_to: tools.align_relative_to,\n    circle_cx: properties.circle_cx,\n    circle_cy: properties.circle_cy,\n    circle_r: properties.circle_r,\n    cornerRadiusLabel: properties.corner_radius,\n    ellipse_cx: properties.ellipse_cx,\n    ellipse_cy: properties.ellipse_cy,\n    ellipse_rx: properties.ellipse_rx,\n    ellipse_ry: properties.ellipse_ry,\n    fill_color: properties.fill_color,\n    font_family: properties.font_family,\n    idLabel: properties.id,\n    image_height: properties.image_height,\n    image_url: properties.image_url,\n    image_width: properties.image_width,\n    layer_delete: layers.del,\n    layer_down: layers.move_down,\n    layer_new: layers.new,\n    layer_rename: layers.rename,\n    layer_moreopts: common.more_opts,\n    layer_up: layers.move_up,\n    line_x1: properties.line_x1,\n    line_x2: properties.line_x2,\n    line_y1: properties.line_y1,\n    line_y2: properties.line_y2,\n    linecap_butt: properties.linecap_butt,\n    linecap_round: properties.linecap_round,\n    linecap_square: properties.linecap_square,\n    linejoin_bevel: properties.linejoin_bevel,\n    linejoin_miter: properties.linejoin_miter,\n    linejoin_round: properties.linejoin_round,\n    main_icon: tools.main_menu,\n    palette: ui.palette_info,\n    zoom_panel: ui.zoom_level,\n    path_node_x: properties.node_x,\n    path_node_y: properties.node_y,\n    rect_height_tool: properties.rect_height,\n    rect_width_tool: properties.rect_width,\n    seg_type: properties.seg_type,\n    selLayerNames: layers.move_selected,\n    selected_x: properties.pos_x,\n    selected_y: properties.pos_y,\n    stroke_color: properties.stroke_color,\n    stroke_style: properties.stroke_style,\n    stroke_width: properties.stroke_width,\n    svginfo_title: config.doc_title,\n    text: properties.text_contents,\n    toggle_stroke_tools: ui.toggle_stroke_tools,\n    tool_add_subpath: tools.add_subpath,\n    tool_alignbottom: tools.align_bottom,\n    tool_aligncenter: tools.align_center,\n    tool_alignleft: tools.align_left,\n    tool_alignmiddle: tools.align_middle,\n    tool_alignright: tools.align_right,\n    tool_aligntop: tools.align_top,\n    tool_angle: properties.angle,\n    tool_blur: properties.blur,\n    tool_bold: properties.bold,\n    tool_circle: tools.mode_circle,\n    tool_clone: tools.clone,\n    tool_clone_multi: tools.clone,\n    tool_delete: tools.del,\n    tool_delete_multi: tools.del,\n    tool_ellipse: tools.mode_ellipse,\n    tool_fhellipse: tools.mode_fhellipse,\n    tool_fhpath: tools.mode_fhpath,\n    tool_fhrect: tools.mode_fhrect,\n    tool_font_size: properties.font_size,\n    tool_group_elements: tools.group_elements,\n    tool_make_link: tools.make_link,\n    tool_link_url: tools.set_link_url,\n    tool_image: tools.mode_image,\n    tool_italic: properties.italic,\n    tool_line: tools.mode_line,\n    tool_move_bottom: tools.move_bottom,\n    tool_move_top: tools.move_top,\n    tool_node_clone: tools.node_clone,\n    tool_node_delete: tools.node_delete,\n    tool_node_link: tools.node_link,\n    tool_opacity: properties.opacity,\n    tool_openclose_path: tools.openclose_path,\n    tool_path: tools.mode_path,\n    tool_position: tools.align_to_page,\n    tool_rect: tools.mode_rect,\n    tool_redo: tools.redo,\n    tool_reorient: tools.reorient_path,\n    tool_select: tools.mode_select,\n    tool_source: tools.source_save,\n    tool_square: tools.mode_square,\n    tool_text: tools.mode_text,\n    tool_topath: tools.to_path,\n    tool_undo: tools.undo,\n    tool_ungroup: tools.ungroup,\n    tool_wireframe: tools.wireframe_mode,\n    tool_zoom: tools.mode_zoom,\n    url_notice: tools.no_embed\n\n  }, true);\n\n  return {langParam, langData};\n};\n\n/**\n* @function module:locale.putLocale\n* @param {string} givenParam\n* @param {string[]} goodLangs\n* @param {{langPath: string}} conf\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n* @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @returns {Promise} Resolves to result of {@link module:locale.readLang}\n*/\nexport const putLocale = async function (givenParam, goodLangs, conf) {\n  if (givenParam) {\n    langParam = givenParam;\n  } else {\n    langParam = $.pref('lang');\n    if (!langParam) {\n      if (navigator.userLanguage) { // Explorer\n        langParam = navigator.userLanguage;\n      } else if (navigator.language) { // FF, Opera, ...\n        langParam = navigator.language;\n      }\n    }\n\n    console.log('Lang: ' + langParam); // eslint-disable-line no-console\n\n    // Set to English if language is not in list of good langs\n    if (!goodLangs.includes(langParam) && langParam !== 'test') {\n      langParam = 'en';\n    }\n\n    // don't bother on first run if language is English\n    // The following line prevents setLang from running\n    //    extensions which depend on updated uiStrings,\n    //    so commenting it out.\n    // if (langParam.startsWith('en')) {return;}\n  }\n\n  const url = conf.langPath + 'lang.' + langParam + '.js';\n  return readLang(\n    // Todo: Replace this with `return import(url);` when\n    //   `import()` widely supported\n    await importSetGlobalDefault(url, {\n      global: 'svgEditorLang_' + langParam.replace(/-/g, '_')\n    })\n  );\n};\n","function loadStylesheets(stylesheets, {\n    before: beforeDefault, after: afterDefault, favicon: faviconDefault,\n    canvas: canvasDefault, image: imageDefault = true,\n    acceptErrors\n} = {}) {\n    stylesheets = Array.isArray(stylesheets) ? stylesheets : [stylesheets];\n\n    function setupLink(stylesheetURL) {\n        let options = {};\n        if (Array.isArray(stylesheetURL)) {\n            [stylesheetURL, options = {}] = stylesheetURL;\n        }\n        let { favicon = faviconDefault } = options;\n        const {\n            before = beforeDefault,\n            after = afterDefault,\n            canvas = canvasDefault,\n            image = imageDefault\n        } = options;\n        function addLink() {\n            if (before) {\n                before.before(link);\n            } else if (after) {\n                after.after(link);\n            } else {\n                document.head.appendChild(link);\n            }\n        }\n\n        const link = document.createElement('link');\n        return new Promise((resolve, reject) => {\n            let rej = reject;\n            if (acceptErrors) {\n                rej = typeof acceptErrors === 'function' ? error => {\n                    acceptErrors({ error, stylesheetURL, options, resolve, reject });\n                } : resolve;\n            }\n            if (stylesheetURL.endsWith('.css')) {\n                favicon = false;\n            } else if (stylesheetURL.endsWith('.ico')) {\n                favicon = true;\n            }\n            if (favicon) {\n                link.rel = 'shortcut icon';\n                link.type = 'image/x-icon';\n\n                if (image === false) {\n                    link.href = stylesheetURL;\n                    addLink();\n                    resolve(link);\n                    return;\n                }\n\n                const cnv = document.createElement('canvas');\n                cnv.width = 16;\n                cnv.height = 16;\n                const context = cnv.getContext('2d');\n                const img = document.createElement('img');\n                img.addEventListener('error', error => {\n                    reject(error);\n                });\n                img.addEventListener('load', () => {\n                    context.drawImage(img, 0, 0);\n                    link.href = canvas ? cnv.toDataURL('image/x-icon') : stylesheetURL;\n                    addLink();\n                    resolve(link);\n                });\n                img.src = stylesheetURL;\n                return;\n            }\n            link.rel = 'stylesheet';\n            link.type = 'text/css';\n            link.href = stylesheetURL;\n            addLink();\n            link.addEventListener('error', error => {\n                rej(error);\n            });\n            link.addEventListener('load', () => {\n                resolve(link);\n            });\n        });\n    }\n\n    return Promise.all(stylesheets.map(setupLink));\n}\n\nexport default loadStylesheets;\n","/* globals jQuery */\n\nimport './touch.js';\nimport {NS} from './namespaces.js';\nimport {isWebkit, isChrome, isGecko, isIE, isMac, isTouch} from './browser.js';\nimport * as Utils from './utilities.js';\nimport {getTypeMap, convertUnit, isValidUnit} from './units.js';\nimport {\n  hasCustomHandler, getCustomHandler, injectExtendedContextMenuItemsIntoDom\n} from './contextmenu.js';\nimport {importSetGlobalDefault} from './external/dynamic-import-polyfill/importModule.js';\n\nimport SvgCanvas from './svgcanvas.js';\nimport Layer from './layer.js';\n\nimport jQueryPluginJSHotkeys from './js-hotkeys/jquery.hotkeys.min.js';\nimport jQueryPluginBBQ from './jquerybbq/jquery.bbq.min.js';\nimport jQueryPluginSVGIcons from './svgicons/jQuery.svgIcons.js';\nimport jQueryPluginJGraduate from './jgraduate/jQuery.jGraduate.js';\nimport jQueryPluginSpinButton from './spinbtn/jQuery.SpinButton.js';\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport jQueryPluginContextMenu from './contextmenu/jQuery.contextMenu.js';\nimport jQueryPluginJPicker from './jgraduate/jQuery.jPicker.js';\nimport jQueryPluginDBox from './dbox.js';\n\nimport {\n  readLang, putLocale,\n  setStrings,\n  init as localeInit\n} from './locale/locale.js';\nimport loadStylesheets from './external/load-stylesheets/index-es.js';\n\n/**\n* The main module for the visual SVG Editor\n*\n* @license MIT\n*\n* @copyright 2010 Alexis Deveria\n* 2010 Pavol Rusnak\n* 2010 Jeff Schiller\n* 2010 Narendra Sisodiya\n* 2014 Brett Zamir\n* @exports module:SVGEditor\n* @borrows module:locale.putLocale as putLocale\n* @borrows module:locale.readLang as readLang\n* @borrows module:locale.setStrings as setStrings\n*/\nconst editor = {};\n\nconst $ = [\n  jQueryPluginJSHotkeys, jQueryPluginBBQ, jQueryPluginSVGIcons, jQueryPluginJGraduate,\n  jQueryPluginSpinButton, jQueryPluginSVG, jQueryPluginContextMenu, jQueryPluginJPicker\n].reduce((jq, func) => func(jq), jQuery);\n\n/*\nif (!$.loadingStylesheets) {\n  $.loadingStylesheets = [];\n}\n*/\nconst stylesheet = 'svg-editor.css';\nif (!$.loadingStylesheets.includes(stylesheet)) {\n  $.loadingStylesheets.push(stylesheet);\n}\nconst favicon = 'images/logo.png';\nif ($.loadingStylesheets.some((item) => {\n  return !Array.isArray(item) || item[0] !== favicon;\n})) {\n  $.loadingStylesheets.push([favicon, {favicon: true}]);\n}\n\n// EDITOR PROPERTIES: (defined below)\n//    curPrefs, curConfig, canvas, storage, uiStrings\n//\n// STATE MAINTENANCE PROPERTIES\n/**\n* @type {Float}\n*/\neditor.tool_scale = 1; // Dependent on icon size, so any use to making configurable instead? Used by `jQuery.SpinButton.js`\n/**\n* @type {Integer}\n*/\neditor.exportWindowCt = 0;\n/**\n* @type {boolean}\n*/\neditor.langChanged = false;\n/**\n* @type {boolean}\n*/\neditor.showSaveWarning = false;\n/**\n * Will be set to a boolean by `ext-storage.js`\n * @type {\"ignore\"|\"waiting\"|\"closed\"}\n*/\neditor.storagePromptState = 'ignore';\n\nconst callbacks = [],\n  /**\n  * @typedef {\"s\"|\"m\"|\"l\"|\"xl\"|Float} module:SVGEditor.IconSize\n  */\n  /**\n  * Preferences\n  * @interface module:SVGEditor.Prefs\n  * @property {string} [lang=\"en\"] Two-letter language code. The language must exist in the Editor Preferences language list. Defaults to \"en\" if `locale.js` detection does not detect another language.\n  * @property {module:SVGEditor.IconSize} [iconsize=\"s\"|\"m\"] Size of the toolbar icons. Will default to 's' if the window height is smaller than the minimum height and 'm' otherwise.\n  * @property {string} [bkgd_color=\"#FFF\"] Color hex for canvas background color. Defaults to white.\n  * @property {string} [bkgd_url=\"\"] Background raster image URL. This image will fill the background of the document; useful for tracing purposes.\n  * @property {\"embed\"|\"ref\"} [img_save=\"embed\"] Defines whether included raster images should be saved as Data URIs when possible, or as URL references. Settable in the Document Properties dialog.\n  * @property {boolean} [save_notice_done=false] Used to track alert status\n  * @property {boolean} [export_notice_done=false] Used to track alert status\n  * @todo `save_notice_done` and `export_notice_done` should be changed to flags rather than preferences\n  */\n  /**\n  * @namespace {module:SVGEditor.Prefs} defaultPrefs\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Prefs}\n  */\n  // The iteration algorithm for defaultPrefs does not currently support array/objects\n  defaultPrefs = /** @lends module:SVGEditor~defaultPrefs */ {\n    // EDITOR OPTIONS (DIALOG)\n    /**\n    * Default to \"en\" if locale.js detection does not detect another language\n    */\n    lang: '',\n    /**\n    * Will default to 's' if the window height is smaller than the minimum height and\n    * 'm' otherwise\n    */\n    iconsize: '',\n    bkgd_color: '#FFF',\n    bkgd_url: '',\n    // DOCUMENT PROPERTIES (DIALOG)\n    img_save: 'embed',\n    // ALERT NOTICES\n    // Only shows in UI as far as alert notices, but useful to remember, so keeping as pref\n    save_notice_done: false,\n    export_notice_done: false\n  },\n  /**\n  * @name module:SVGEditor~defaultExtensions\n  * @type {string[]}\n  */\n  defaultExtensions = [\n    'ext-connector.js',\n    'ext-eyedropper.js',\n    'ext-grid.js',\n    'ext-imagelib.js',\n    'ext-markers.js',\n    'ext-overview_window.js',\n    'ext-panning.js',\n    'ext-polygon.js',\n    'ext-shapes.js',\n    'ext-star.js',\n    'ext-storage.js'\n  ],\n  /**\n  * @typedef {\"@default\"|string} module:SVGEditor.Stylesheet `@default` will automatically load all of the default CSS paths for SVGEditor\n  */\n  /**\n  * @typedef {GenericArray} module:SVGEditor.XYDimensions\n  * @property {Integer} length 2\n  * @property {Float} 0\n  * @property {Float} 1\n  */\n  /**\n  * @tutorial ConfigOptions\n  * @interface module:SVGEditor.Config\n  * @property {string} [canvasName=\"default\"] Used to namespace storage provided via `ext-storage.js`; you can use this if you wish to have multiple independent instances of SVG Edit on the same domain\n  * @property {boolean} [no_save_warning=false] If `true`, prevents the warning dialog box from appearing when closing/reloading the page. Mostly useful for testing.\n  * @property {string} [imgPath=\"images/\"] The path where the SVG icons are located, with trailing slash. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [langPath=\"locale/\"] The path where the language files are located, with trailing slash. Default will be changed to `../dist/locale/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [extPath=\"extensions/\"] The path used for extension files, with trailing slash. Default will be changed to `../dist/extensions/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [canvgPath=\"canvg/\"] The path used for `canvg` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [jspdfPath=\"jspdf/\"] The path used for `jsPDF` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [extIconsPath=\"extensions/\"] The path used for extension icons, with trailing slash.\n  * @property {string} [jGraduatePath=\"jgraduate/images/\"] The path where jGraduate images are located. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {boolean} [preventAllURLConfig=false] Set to `true` to override the ability for URLs to set non-content configuration (including extension config). Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [preventURLContentLoading=false] Set to `true` to override the ability for URLs to set URL-based SVG content. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [lockExtensions=false] Set to `true` to override the ability for URLs to set their own extensions; disallowed in URL setting. There is no need for this when `preventAllURLConfig` is used. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [noDefaultExtensions=false] If set to `true`, prohibits automatic inclusion of default extensions (though \"extensions\" can still be used to add back any desired default extensions along with any other extensions). This can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n  * @property {boolean} [noStorageOnLoad=false] Some interaction with `ext-storage.js`; prevent even the loading of previously saved local storage.\n  * @property {boolean} [forceStorage=false] Some interaction with `ext-storage.js`; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not (and may be required by law in some regions)\n  * @property {boolean} [emptyStorageOnDecline=false] Used by `ext-storage.js`; empty any prior storage if the user declines to store\n  * @property {string[]} [extensions=module:SVGEditor~defaultExtensions] Extensions to load on startup. Use an array in `setConfig` and comma separated file names in the URL. Extension names must begin with \"ext-\". Note that as of version 2.7, paths containing \"/\", \"\\\", or \":\", are disallowed for security reasons. Although previous versions of this list would entirely override the default list, as of version 2.7, the defaults will always be added to this explicit list unless the configuration `noDefaultExtensions` is included.\n  * @property {module:SVGEditor.Stylesheet[]} [stylesheets=[\"@default\"]] An array of required stylesheets to load in parallel; include the value `\"@default\"` within this array to ensure all default stylesheets are loaded.\n  * @property {string[]} [allowedOrigins=[]] Used by `ext-xdomain-messaging.js` to indicate which origins are permitted for cross-domain messaging (e.g., between the embedded editor and main editor code). Besides explicit domains, one might add '*' to allow all domains (not recommended for privacy/data integrity of your user's content!), `window.location.origin` for allowing the same origin (should be safe if you trust all apps on your domain), 'null' to allow `file:///` URL usage\n  * @property {null|PlainObject} [colorPickerCSS=null] Object of CSS properties mapped to values (for jQuery) to apply to the color picker. See {@link http://api.jquery.com/css/#css-properties}. A `null` value (the default) will cause the CSS to default to `left` with a position equal to that of the `fill_color` or `stroke_color` element minus 140, and a `bottom` equal to 40\n  * @property {string} [paramurl] This was available via URL only. Allowed an un-encoded URL within the query string (use \"url\" or \"source\" with a data: URI instead)\n  * @property {Float} [canvas_expansion=3] The minimum area visible outside the canvas, as a multiple of the image dimensions. The larger the number, the more one can scroll outside the canvas.\n  * @property {PlainObject} [initFill] Init fill properties\n  * @property {string} [initFill.color=\"FF0000\"] The initial fill color. Must be a hex code string. Defaults to solid red.\n  * @property {Float} [initFill.opacity=1] The initial fill opacity. Must be a number between 0 and 1\n  * @property {PlainObject} [initStroke] Init stroke properties\n  * @property {Float} [initStroke.width=5] The initial stroke width. Must be a positive number.\n  * @property {string} [initStroke.color=\"000000\"] The initial stroke color. Must be a hex code. Defaults to solid black.\n  * @property {Float} [initStroke.opacity=1] The initial stroke opacity. Must be a number between 0 and 1.\n  * @property {PlainObject} text Text style properties\n  * @property {Float} [text.stroke_width=0] Text stroke width\n  * @property {Float} [text.font_size=24] Text font size\n  * @property {string} [text.font_family=\"serif\"] Text font family\n  * @property {Float} [initOpacity=1] Initial opacity (multiplied by 100)\n  * @property {module:SVGEditor.XYDimensions} [dimensions=[640, 480]] The default width/height of a new document. Use an array in `setConfig` (e.g., `[800, 600]`) and comma separated numbers in the URL.\n  * @property {boolean} [gridSnapping=false] Enable snap to grid by default. Set in Editor Options.\n  * @property {string} [gridColor=\"#000\"] Accepts hex, e.g., '#000'. Set in Editor Options. Defaults to black.\n  * @property {string} [baseUnit=\"px\"] Set in Editor Options.\n  * @property {Float} [snappingStep=10] Set the default grid snapping value. Set in Editor Options.\n  * @property {boolean} [showRulers=true] Initial state of ruler display (v2.6). Set in Editor Options.\n  * @property {string} [initTool=\"select\"] The initially selected tool. Must be either the ID of the button for the tool, or the ID without `tool_` prefix (e.g., \"select\").\n  * @property {boolean} [wireframe=false] Start in wireframe mode\n  * @property {boolean} [showlayers=false] Open the layers side-panel by default.\n  * @property {\"new\"|\"same\"} [exportWindowType=\"new\"] Can be \"new\" or \"same\" to indicate whether new windows will be generated for each export; the `window.name` of the export window is namespaced based on the `canvasName` (and incremented if \"new\" is selected as the type). Introduced 2.8.\n  * @property {boolean} [showGrid=false] Set by `ext-grid.js`; determines whether or not to show the grid by default\n  * @property {boolean} [show_outside_canvas=true] Defines whether or not elements outside the canvas should be visible. Set and used in `svgcanvas.js`.\n  * @property {boolean} [selectNew=true] If true, will replace the selection with the current element and automatically select element objects (when not in \"path\" mode) after they are created, showing their grips (v2.6). Set and used in `svgcanvas.js` (`mouseUp`).\n  * @todo Some others could be preferences as well (e.g., preventing URL changing of extensions, defaultExtensions, stylesheets, colorPickerCSS); Change the following to preferences and add pref controls where missing to the UI (e.g., `canvas_expansion`, `initFill`, `initStroke`, `text`, `initOpacity`, `dimensions`, `initTool`, `wireframe`, `showlayers`, `gridSnapping`, `gridColor`, `baseUnit`, `snappingStep`, `showRulers`, `exportWindowType`, `showGrid`, `show_outside_canvas`, `selectNew`)?\n  */\n  /**\n  * @namespace {module:SVGEditor.Config} defaultConfig\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Config}\n  */\n  defaultConfig = {\n    canvasName: 'default',\n    canvas_expansion: 3,\n    initFill: {\n      color: 'FF0000', // solid red\n      opacity: 1\n    },\n    initStroke: {\n      width: 5,\n      color: '000000', // solid black\n      opacity: 1\n    },\n    text: {\n      stroke_width: 0,\n      font_size: 24,\n      font_family: 'serif'\n    },\n    initOpacity: 1,\n    colorPickerCSS: null, // Defaults to 'left' with a position equal to that of the fill_color or stroke_color element minus 140, and a 'bottom' equal to 40\n    initTool: 'select',\n    exportWindowType: 'new', // 'same' (todo: also support 'download')\n    wireframe: false,\n    showlayers: false,\n    no_save_warning: false,\n    // PATH CONFIGURATION\n    // The following path configuration items are disallowed in the URL (as should any future path configurations)\n    langPath: 'locale/', // Default will be changed if this is a non-modular load\n    extPath: 'extensions/', // Default will be changed if this is a non-modular load\n    canvgPath: 'canvg/', // Default will be changed if this is a non-modular load\n    jspdfPath: 'jspdf/', // Default will be changed if this is a non-modular load\n    imgPath: 'images/',\n    jGraduatePath: 'jgraduate/images/',\n    extIconsPath: 'extensions/',\n    // DOCUMENT PROPERTIES\n    // Change the following to a preference (already in the Document Properties dialog)?\n    dimensions: [640, 480],\n    // EDITOR OPTIONS\n    // Change the following to preferences (already in the Editor Options dialog)?\n    gridSnapping: false,\n    gridColor: '#000',\n    baseUnit: 'px',\n    snappingStep: 10,\n    showRulers: true,\n    // URL BEHAVIOR CONFIGURATION\n    preventAllURLConfig: false,\n    preventURLContentLoading: false,\n    // EXTENSION CONFIGURATION (see also preventAllURLConfig)\n    lockExtensions: false, // Disallowed in URL setting\n    noDefaultExtensions: false, // noDefaultExtensions can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n    // EXTENSION-RELATED (GRID)\n    showGrid: false, // Set by ext-grid.js\n    // EXTENSION-RELATED (STORAGE)\n    noStorageOnLoad: false, // Some interaction with ext-storage.js; prevent even the loading of previously saved local storage\n    forceStorage: false, // Some interaction with ext-storage.js; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not\n    emptyStorageOnDecline: false // Used by ext-storage.js; empty any prior storage if the user declines to store\n  },\n  /**\n  * LOCALE\n  * @name module:SVGEditor.uiStrings\n  * @type {PlainObject}\n  */\n  uiStrings = editor.uiStrings = {};\n\nlet svgCanvas, urldata,\n  isReady = false,\n  customExportImage = false,\n  customExportPDF = false,\n  curPrefs = {},\n  // Note: The difference between Prefs and Config is that Prefs\n  //   can be changed in the UI and are stored in the browser,\n  //   while config cannot\n  curConfig = {\n    // We do not put on defaultConfig to simplify object copying\n    //   procedures (we obtain instead from defaultExtensions)\n    extensions: [],\n    stylesheets: [],\n    /**\n    * Can use `location.origin` to indicate the current\n    * origin. Can contain a '*' to allow all domains or 'null' (as\n    * a string) to support all `file:///` URLs. Cannot be set by\n    * URL for security reasons (not safe, at least for\n    * privacy or data integrity of SVG content).\n    * Might have been fairly safe to allow\n    *   `new URL(location.href).origin` by default but\n    *   avoiding it ensures some more security that even third\n    *   party apps on the same domain also cannot communicate\n    *   with this app by default.\n    * For use with `ext-xdomain-messaging.js`\n    * @todo We might instead make as a user-facing preference.\n    */\n    allowedOrigins: []\n  };\n\n/**\n *\n * @param {string} str SVG string\n * @param {PlainObject} [opts={}]\n * @param {boolean} [opts.noAlert]\n * @throws {Error} Upon failure to load SVG\n * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is\n *   falsey, though only until after the `alert` is closed); rejects if SVG\n *   loading fails and `noAlert` is truthy.\n */\nasync function loadSvgString (str, {noAlert} = {}) {\n  const success = svgCanvas.setSvgString(str) !== false;\n  if (success) {\n    return;\n  }\n\n  if (!noAlert) {\n    await $.alert(uiStrings.notification.errorLoadingSVG);\n    return;\n  }\n  throw new Error('Error loading SVG');\n}\n\n/**\n * @function module:SVGEditor~getImportLocale\n * @param {PlainObject} defaults\n * @param {string} defaults.defaultLang\n * @param {string} defaults.defaultName\n * @returns {module:SVGEditor~ImportLocale}\n */\nfunction getImportLocale ({defaultLang, defaultName}) {\n  /**\n   * @function module:SVGEditor~ImportLocale\n   * @param {PlainObject} localeInfo\n   * @param {string} [localeInfo.name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}\n   * @param {string} [localeInfo.lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}\n   * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}\n   */\n  return async function importLocaleDefaulting ({name = defaultName, lang = defaultLang} = {}) {\n    /**\n     *\n     * @param {string} language\n     * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}\n     */\n    function importLocale (language) {\n      const url = `${curConfig.extPath}ext-locale/${name}/${language}.js`;\n      return importSetGlobalDefault(url, {\n        global: `svgEditorExtensionLocale_${name}_${language}`\n      });\n    }\n    try {\n      return await importLocale(lang);\n    } catch (err) {\n      return importLocale('en');\n    }\n  };\n}\n\n/**\n* EXPORTS\n*/\n\n/**\n* Store and retrieve preferences.\n* @param {string} key The preference name to be retrieved or set\n* @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.\n* @returns {string|undefined} If val is missing or falsey, the value of the previously stored preference will be returned.\n* @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?\n* @todo Review whether any remaining existing direct references to\n*  getting `curPrefs` can be changed to use `$.pref()` getting to ensure\n*  `defaultPrefs` fallback (also for sake of `allowInitialUserOverride`); specifically, `bkgd_color` could be changed so that\n*  the pref dialog has a button to auto-calculate background, but otherwise uses `$.pref()` to be able to get default prefs\n*  or overridable settings\n*/\n$.pref = function (key, val) {\n  if (val) {\n    curPrefs[key] = val;\n    /**\n    * @name curPrefs\n    * @memberof module:SVGEditor\n    * @implements {module:SVGEditor.Prefs}\n    */\n    editor.curPrefs = curPrefs; // Update exported value\n    return undefined;\n  }\n  return (key in curPrefs) ? curPrefs[key] : defaultPrefs[key];\n};\n\n/*\n* EDITOR PUBLIC METHODS\n// Todo: Sort these methods per invocation order, ideally with init at the end\n// Todo: Prevent execution until init executes if dependent on it?\n*/\neditor.putLocale = putLocale;\neditor.readLang = readLang;\neditor.setStrings = setStrings;\n\n/**\n* Where permitted, sets canvas and/or `defaultPrefs` based on previous\n*  storage. This will override URL settings (for security reasons) but\n*  not `svgedit-config-iife.js` configuration (unless initial user\n*  overriding is explicitly permitted there via `allowInitialUserOverride`).\n* @todo Split `allowInitialUserOverride` into `allowOverrideByURL` and\n*  `allowOverrideByUserStorage` so `svgedit-config-iife.js` can disallow some\n*  individual items for URL setting but allow for user storage AND/OR\n*  change URL setting so that it always uses a different namespace,\n*  so it won't affect pre-existing user storage (but then if users saves\n*  that, it will then be subject to tampering\n* @returns {undefined}\n*/\neditor.loadContentAndPrefs = function () {\n  if (!curConfig.forceStorage &&\n    (curConfig.noStorageOnLoad ||\n        !document.cookie.match(/(?:^|;\\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/)\n    )\n  ) {\n    return;\n  }\n\n  // LOAD CONTENT\n  if (editor.storage && // Cookies do not have enough available memory to hold large documents\n    (curConfig.forceStorage ||\n      (!curConfig.noStorageOnLoad &&\n        document.cookie.match(/(?:^|;\\s*)svgeditstorestore=prefsAndContent/))\n    )\n  ) {\n    const name = 'svgedit-' + curConfig.canvasName;\n    const cached = editor.storage.getItem(name);\n    if (cached) {\n      editor.loadFromString(cached);\n    }\n  }\n\n  // LOAD PREFS\n  Object.keys(defaultPrefs).forEach((key) => {\n    const storeKey = 'svg-edit-' + key;\n    if (editor.storage) {\n      const val = editor.storage.getItem(storeKey);\n      if (val) {\n        defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)\n      }\n    } else if (window.widget) {\n      defaultPrefs[key] = window.widget.preferenceForKey(storeKey);\n    } else {\n      const result = document.cookie.match(new RegExp('(?:^|;\\\\s*)' + Utils.regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));\n      defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';\n    }\n  });\n};\n\n/**\n* Allows setting of preferences or configuration (including extensions).\n* @param {module:SVGEditor.Config|module:SVGEditor.Prefs} opts The preferences or configuration (including extensions). See the tutorial on {@tutorial ConfigOptions} for info on config and preferences.\n* @param {PlainObject} [cfgCfg] Describes configuration which applies to the\n*    particular batch of supplied options\n* @param {boolean} [cfgCfg.allowInitialUserOverride=false] Set to true if you wish\n*  to allow initial overriding of settings by the user via the URL\n*  (if permitted) or previously stored preferences (if permitted);\n*  note that it will be too late if you make such calls in extension\n*  code because the URL or preference storage settings will\n*   have already taken place.\n* @param {boolean} [cfgCfg.overwrite=true] Set to false if you wish to\n*  prevent the overwriting of prior-set preferences or configuration\n*  (URL settings will always follow this requirement for security\n*  reasons, so `svgedit-config-iife.js` settings cannot be overridden unless it\n*  explicitly permits via `allowInitialUserOverride` but extension config\n*  can be overridden as they will run after URL settings). Should\n*   not be needed in `svgedit-config-iife.js`.\n* @returns {undefined}\n*/\neditor.setConfig = function (opts, cfgCfg) {\n  cfgCfg = cfgCfg || {};\n  /**\n   *\n   * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj\n   * @param {string} key\n   * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}\n   * @returns {undefined}\n   */\n  function extendOrAdd (cfgObj, key, val) {\n    if (cfgObj[key] && typeof cfgObj[key] === 'object') {\n      $.extend(true, cfgObj[key], val);\n    } else {\n      cfgObj[key] = val;\n    }\n  }\n  $.each(opts, function (key, val) {\n    if ({}.hasOwnProperty.call(opts, key)) {\n      // Only allow prefs defined in defaultPrefs\n      if ({}.hasOwnProperty.call(defaultPrefs, key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          {}.hasOwnProperty.call(curPrefs, key)\n        )) {\n          return;\n        }\n        if (cfgCfg.allowInitialUserOverride === true) {\n          defaultPrefs[key] = val;\n        } else {\n          $.pref(key, val);\n        }\n      } else if (['extensions', 'stylesheets', 'allowedOrigins'].includes(key)) {\n        if (cfgCfg.overwrite === false &&\n          (\n            curConfig.preventAllURLConfig ||\n            ['allowedOrigins', 'stylesheets'].includes(key) ||\n            (key === 'extensions' && curConfig.lockExtensions)\n          )\n        ) {\n          return;\n        }\n        curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later\n      // Only allow other curConfig if defined in defaultConfig\n      } else if ({}.hasOwnProperty.call(defaultConfig, key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          {}.hasOwnProperty.call(curConfig, key)\n        )) {\n          return;\n        }\n        // Potentially overwriting of previously set config\n        if ({}.hasOwnProperty.call(curConfig, key)) {\n          if (cfgCfg.overwrite === false) {\n            return;\n          }\n          extendOrAdd(curConfig, key, val);\n        } else if (cfgCfg.allowInitialUserOverride === true) {\n          extendOrAdd(defaultConfig, key, val);\n        } else if (defaultConfig[key] && typeof defaultConfig[key] === 'object') {\n          curConfig[key] = {};\n          $.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects\n        } else {\n          curConfig[key] = val;\n        }\n      }\n    }\n  });\n  /**\n  * @name curConfig\n  * @memberof module:SVGEditor\n  * @implements {module:SVGEditor.Config}\n  */\n  editor.curConfig = curConfig; // Update exported value\n};\n\n/**\n* All methods are optional\n* @interface module:SVGEditor.CustomHandler\n* @type {PlainObject}\n*/\n/**\n* Its responsibilities are:\n*  - invoke a file chooser dialog in 'open' mode\n*  - let user pick a SVG file\n*  - calls [svgCanvas.setSvgString()]{@link module:svgcanvas.SvgCanvas#setSvgString} with the string contents of that file.\n* Not passed any parameters.\n* @function module:SVGEditor.CustomHandler#open\n* @returns {undefined}\n*/\n/**\n* Its responsibilities are:\n*  - accept the string contents of the current document\n*  - invoke a file chooser dialog in 'save' mode\n*  - save the file to location chosen by the user\n* @function module:SVGEditor.CustomHandler#save\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:saved} svgStr A string of the SVG\n* @listens module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\n/**\n* Its responsibilities (with regard to the object it is supplied in its 2nd argument) are:\n*  - inform user of any issues supplied via the \"issues\" property\n*  - convert the \"svg\" property SVG string into an image for export;\n*    utilize the properties \"type\" (currently 'PNG', 'JPEG', 'BMP',\n*    'WEBP', 'PDF'), \"mimeType\", and \"quality\" (for 'JPEG' and 'WEBP'\n*    types) to determine the proper output.\n* @function module:SVGEditor.CustomHandler#exportImage\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exported} data\n* @listens module:svgcanvas.SvgCanvas#event:exported\n* @returns {undefined}\n*/\n/**\n* @function module:SVGEditor.CustomHandler#exportPDF\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exportedPDF} data\n* @listens module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {undefined}\n*/\n\n/**\n* Allows one to override default SVGEdit `open`, `save`, and\n* `export` editor behaviors.\n* @param {module:SVGEditor.CustomHandler} opts Extension mechanisms may call `setCustomHandlers` with three functions: `opts.open`, `opts.save`, and `opts.exportImage`\n* @returns {undefined}\n*/\neditor.setCustomHandlers = function (opts) {\n  editor.ready(function () {\n    if (opts.open) {\n      $('#tool_open > input[type=\"file\"]').remove();\n      $('#tool_open').show();\n      svgCanvas.open = opts.open;\n    }\n    if (opts.save) {\n      editor.showSaveWarning = false;\n      svgCanvas.bind('saved', opts.save);\n    }\n    if (opts.exportImage) {\n      customExportImage = opts.exportImage;\n      svgCanvas.bind('exported', customExportImage); // canvg and our RGBColor will be available to the method\n    }\n    if (opts.exportPDF) {\n      customExportPDF = opts.exportPDF;\n      svgCanvas.bind('exportedPDF', customExportPDF); // jsPDF and our RGBColor will be available to the method\n    }\n  });\n};\n\n/**\n* @param {boolean} arg\n* @returns {undefined}\n*/\neditor.randomizeIds = function (arg) {\n  return svgCanvas.randomizeIds(arg);\n};\n\n/**\n* Auto-run after a Promise microtask.\n* @returns {undefined}\n*/\neditor.init = function () {\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (!modularVersion) {\n    Object.assign(defaultConfig, {\n      langPath: '../dist/locale/',\n      extPath: '../dist/extensions/',\n      canvgPath: '../dist/',\n      jspdfPath: '../dist/'\n    });\n  }\n\n  // const host = location.hostname,\n  //  onWeb = host && host.includes('.');\n  // Some FF versions throw security errors here when directly accessing\n  try {\n    if ('localStorage' in window) { // && onWeb removed so Webkit works locally\n      /**\n      * The built-in interface implemented by `localStorage`\n      * @external Storage\n      */\n      /**\n      * @name storage\n      * @memberof module:SVGEditor\n      * @type {external:Storage}\n      */\n      editor.storage = localStorage;\n    }\n  } catch (err) {}\n\n  // Todo: Avoid const-defined functions and group functions together, etc. where possible\n  const goodLangs = [];\n  $('#lang_select option').each(function () {\n    goodLangs.push(this.value);\n  });\n\n  /**\n   * Sets up current preferences based on defaults.\n   * @returns {undefined}\n   */\n  function setupCurPrefs () {\n    curPrefs = $.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set\n    // Export updated prefs\n    editor.curPrefs = curPrefs;\n  }\n\n  /**\n   * Sets up current config based on defaults.\n   * @returns {undefined}\n   */\n  function setupCurConfig () {\n    curConfig = $.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set\n\n    // Now deal with extensions and other array config\n    if (!curConfig.noDefaultExtensions) {\n      curConfig.extensions = curConfig.extensions.concat(defaultExtensions);\n    }\n    // ...and remove any dupes\n    ['extensions', 'stylesheets', 'allowedOrigins'].forEach(function (cfg) {\n      curConfig[cfg] = $.grep(curConfig[cfg], function (n, i) { // Supposedly faster than filter per http://amandeep1986.blogspot.hk/2015/02/jquery-grep-vs-js-filter.html\n        return i === curConfig[cfg].indexOf(n);\n      });\n    });\n    // Export updated config\n    editor.curConfig = curConfig;\n  }\n  (() => {\n    // Load config/data from URL if given\n    let src, qstr;\n    urldata = $.deparam.querystring(true);\n    if (!$.isEmptyObject(urldata)) {\n      if (urldata.dimensions) {\n        urldata.dimensions = urldata.dimensions.split(',');\n      }\n\n      if (urldata.bkgd_color) {\n        urldata.bkgd_color = '#' + urldata.bkgd_color;\n      }\n\n      if (urldata.extensions) {\n        // For security reasons, disallow cross-domain or cross-folder extensions via URL\n        urldata.extensions = urldata.extensions.match(/[:/\\\\]/) ? '' : urldata.extensions.split(',');\n      }\n\n      // Disallowing extension paths via URL for\n      // security reasons, even for same-domain\n      // ones given potential to interact in undesirable\n      // ways with other script resources\n      [\n        'langPath', 'extPath', 'canvgPath', 'jspdfPath',\n        'imgPath', 'jGraduatePath', 'extIconsPath'\n      ].forEach(function (pathConfig) {\n        if (urldata[pathConfig]) {\n          delete urldata[pathConfig];\n        }\n      });\n\n      editor.setConfig(urldata, {overwrite: false}); // Note: source and url (as with storagePrompt later) are not set on config but are used below\n\n      setupCurConfig();\n\n      if (!curConfig.preventURLContentLoading) {\n        src = urldata.source;\n        qstr = $.param.querystring();\n        if (!src) { // urldata.source may have been null if it ended with '='\n          if (qstr.includes('source=data:')) {\n            src = qstr.match(/source=(data:[^&]*)/)[1];\n          }\n        }\n        if (src) {\n          if (src.startsWith('data:')) {\n            editor.loadFromDataURI(src);\n          } else {\n            editor.loadFromString(src);\n          }\n          return;\n        }\n        if (urldata.url) {\n          editor.loadFromURL(urldata.url);\n          return;\n        }\n      }\n      if (!urldata.noStorageOnLoad || curConfig.forceStorage) {\n        editor.loadContentAndPrefs();\n      }\n    } else {\n      setupCurConfig();\n      editor.loadContentAndPrefs();\n    }\n    setupCurPrefs();\n  })();\n\n  /**\n  * Called internally.\n  * @param {string|Element|external:jQuery} elem\n  * @param {string|external:jQuery} iconId\n  * @param {Float} forcedSize Not in use\n  * @returns {undefined}\n  */\n  const setIcon = editor.setIcon = function (elem, iconId, forcedSize) {\n    const icon = (typeof iconId === 'string') ? $.getSvgIcon(iconId, true) : iconId.clone();\n    if (!icon) {\n      // Todo: Investigate why this still occurs in some cases\n      console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console\n      return;\n    }\n    $(elem).empty().append(icon);\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n   * @fires module:svgcanvas.SvgCanvas#event:extensions_added\n   * @returns {Promise} Resolves to result of {@link module:locale.readLang}\n   */\n  const extAndLocaleFunc = async function () {\n    // const lang = ('lang' in curPrefs) ? curPrefs.lang : null;\n    const {langParam, langData} = await editor.putLocale(null, goodLangs, curConfig);\n    await setLang(langParam, langData);\n\n    const {ok, cancel} = uiStrings.common;\n    jQueryPluginDBox($, {ok, cancel});\n\n    try {\n      await Promise.all(\n        curConfig.extensions.map(async (extname) => {\n          const extName = extname.match(/^ext-(.+)\\.js/);\n          if (!extName) { // Ensure URL cannot specify some other unintended file in the extPath\n            return undefined;\n          }\n          const url = curConfig.extPath + extname;\n          // Todo: Replace this with `return import(url);` when\n          //   `import()` widely supported\n          /**\n           * @tutorial ExtensionDocs\n           * @typedef {PlainObject} module:SVGEditor.ExtensionObject\n           * @property {string} [name] Name of the extension. Used internally; no need for i18n. Defaults to extension name without beginning \"ext-\" or ending \".js\".\n           * @property {module:svgcanvas.ExtensionInitCallback} [init]\n           */\n          try {\n            /**\n             * @type {module:SVGEditor.ExtensionObject}\n             */\n            const imported = await importSetGlobalDefault(url, {\n              global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')\n            });\n            const {name = extName[1], init} = imported;\n            const importLocale = getImportLocale({defaultLang: langParam, defaultName: name});\n            return editor.addExtension(name, (init && init.bind(editor)), {$, importLocale});\n          } catch (err) {\n            // Todo: Add config to alert any errors\n            console.log(err); // eslint-disable-line no-console\n            console.error('Extension failed to load: ' + extname + '; ' + err); // eslint-disable-line no-console\n            return undefined;\n          }\n        })\n      );\n      svgCanvas.bind(\n        'extensions_added',\n        /**\n        * @param {external:Window} win\n        * @param {module:svgcanvas.SvgCanvas#event:extensions_added} data\n        * @listens module:svgcanvas.SvgCanvas#event:extensions_added\n        * @returns {undefined}\n        */\n        (win, data) => {\n          extensionsAdded = true;\n          Actions.setAll();\n\n          $('.flyout_arrow_horiz:empty').each(function () {\n            $(this).append($.getSvgIcon('arrow_right', true).width(5).height(5));\n          });\n\n          if (editor.storagePromptState === 'ignore') {\n            updateCanvas(true);\n          }\n\n          messageQueue.forEach(\n            /**\n             * @param {module:svgcanvas.SvgCanvas#event:message} messageObj\n             * @fires module:svgcanvas.SvgCanvas#event:message\n             * @returns {undefined}\n             */\n            (messageObj) => {\n              svgCanvas.call('message', messageObj);\n            }\n          );\n        }\n      );\n      svgCanvas.call('extensions_added');\n    } catch (err) {\n      // Todo: Report errors through the UI\n      console.log(err); // eslint-disable-line no-console\n    }\n  };\n\n  const stateObj = {tool_scale: editor.tool_scale};\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const setFlyoutPositions = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      const {left, top} = shower.offset();\n      const w = shower.outerWidth();\n      $(this).css({left: (left + w) * editor.tool_scale, top});\n    });\n  };\n\n  /**\n  * @type {string}\n  */\n  const uaPrefix = (function () {\n    const regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;\n    const someScript = document.getElementsByTagName('script')[0];\n    for (const prop in someScript.style) {\n      if (regex.test(prop)) {\n        // test is faster than match, so it's better to perform\n        // that on the lot and match only when necessary\n        return prop.match(regex)[0];\n      }\n    }\n    // Nothing found so far?\n    if ('WebkitOpacity' in someScript.style) { return 'Webkit'; }\n    if ('KhtmlOpacity' in someScript.style) { return 'Khtml'; }\n\n    return '';\n  }());\n\n  /**\n  * @param {external:jQuery} elems\n  * @param {Float} scale\n  * @returns {undefined}\n  */\n  const scaleElements = function (elems, scale) {\n    // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused\n    const sides = ['top', 'left', 'bottom', 'right'];\n\n    elems.each(function () {\n      // Handled in CSS\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const el = $(this);\n      const w = el.outerWidth() * (scale - 1);\n      const h = el.outerHeight() * (scale - 1);\n      // const margins = {}; // Currently unused\n\n      for (let i = 0; i < 4; i++) {\n        const s = sides[i];\n        let cur = el.data('orig_margin-' + s);\n        if (Utils.isNullish(cur)) {\n          cur = parseInt(el.css('margin-' + s));\n          // Cache the original margin\n          el.data('orig_margin-' + s, cur);\n        }\n        let val = cur * scale;\n        if (s === 'right') {\n          val += w;\n        } else if (s === 'bottom') {\n          val += h;\n        }\n\n        el.css('margin-' + s, val);\n        // el.css('outline', '1px solid red');\n      }\n    });\n  };\n\n  /**\n  * Called internally.\n  * @param {module:SVGEditor.IconSize} size\n  * @returns {undefined}\n  */\n  const setIconSize = editor.setIconSize = function (size) {\n    // const elems = $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open');\n    const selToscale = '#tools_top .toolset, #editor_panel > *, #history_panel > *,' +\n  '        #main_button, #tools_left > *, #path_node_panel > *, #multiselected_panel > *,' +\n  '        #g_panel > *, #tool_font_size > *, .tools_flyout';\n\n    const elems = $(selToscale);\n\n    let scale = 1;\n    if (typeof size === 'number') {\n      scale = size;\n    } else {\n      const iconSizes = {s: 0.75, m: 1, l: 1.25, xl: 1.5};\n      scale = iconSizes[size];\n    }\n\n    stateObj.tool_scale = editor.tool_scale = scale;\n\n    setFlyoutPositions();\n    // $('.tools_flyout').each(function () {\n    //   const pos = $(this).position();\n    //   console.log($(this), pos.left+(34 * scale));\n    //   $(this).css({left: pos.left+(34 * scale), top: pos.top+(77 * scale)});\n    //   console.log('l', $(this).css('left'));\n    // });\n    //\n    // const scale = .75;\n\n    const hiddenPs = elems.parents(':hidden');\n    hiddenPs.css('visibility', 'hidden').show();\n    scaleElements(elems, scale);\n    hiddenPs.css('visibility', 'visible').hide();\n    // return;\n\n    $.pref('iconsize', size);\n    $('#iconsize').val(size);\n\n    // Change icon size\n    // $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open')\n    // .find('> svg, > img').each(function () {\n    //   this.setAttribute('width',size_num);\n    //   this.setAttribute('height',size_num);\n    // });\n    //\n    // $.resizeSvgIcons({\n    //   '.flyout_arrow_horiz > svg, .flyout_arrow_horiz > img': size_num / 5,\n    //   '#logo > svg, #logo > img': size_num * 1.3,\n    //   '#tools_bottom .icon_label > *': (size_num === 16 ? 18 : size_num * .75)\n    // });\n    // if (size != 's') {\n    //   $.resizeSvgIcons({'#layerbuttons svg, #layerbuttons img': size_num * .6});\n    // }\n\n    // Note that all rules will be prefixed with '#svg_editor' when parsed\n    const cssResizeRules = {\n      // '.tool_button,\\\n      // .push_button,\\\n      // .tool_button_current,\\\n      // .push_button_pressed,\\\n      // .disabled,\\\n      // .icon_label,\\\n      // .tools_flyout .tool_button': {\n      //   width: {s: '16px', l: '32px', xl: '48px'},\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   padding: {s: '1px', l: '2px', xl: '3px'}\n      // },\n      // '.tool_sep': {\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   margin: {s: '2px 2px', l: '2px 5px', xl: '2px 8px'}\n      // },\n      // '#main_icon': {\n      //   width: {s: '31px', l: '53px', xl: '75px'},\n      //   height: {s: '22px', l: '42px', xl: '64px'}\n      // },\n      '#tools_top': {\n        left: 50 + $('#main_button').width(),\n        height: 72\n      },\n      '#tools_left': {\n        width: 31,\n        top: 74\n      },\n      'div#workarea': {\n        left: 38,\n        top: 74\n      }\n      // '#tools_bottom': {\n      //   left: {s: '27px', l: '46px', xl: '65px'},\n      //   height: {s: '58px', l: '98px', xl: '145px'}\n      // },\n      // '#color_tools': {\n      //   'border-spacing': {s: '0 1px'},\n      //   'margin-top': {s: '-1px'}\n      // },\n      // '#color_tools .icon_label': {\n      //   width: {l:'43px', xl: '60px'}\n      // },\n      // '.color_tool': {\n      //   height: {s: '20px'}\n      // },\n      // '#tool_opacity': {\n      //   top: {s: '1px'},\n      //   height: {s: 'auto', l:'auto', xl:'auto'}\n      // },\n      // '#tools_top input, #tools_bottom input': {\n      //   'margin-top': {s: '2px', l: '4px', xl: '5px'},\n      //   height: {s: 'auto', l: 'auto', xl: 'auto'},\n      //   border: {s: '1px solid #555', l: 'auto', xl: 'auto'},\n      //   'font-size': {s: '.9em', l: '1.2em', xl: '1.4em'}\n      // },\n      // '#zoom_panel': {\n      //   'margin-top': {s: '3px', l: '4px', xl: '5px'}\n      // },\n      // '#copyright, #tools_bottom .label': {\n      //   'font-size': {l: '1.5em', xl: '2em'},\n      //   'line-height': {s: '15px'}\n      // },\n      // '#tools_bottom_2': {\n      //   width: {l: '295px', xl: '355px'},\n      //   top: {s: '4px'}\n      // },\n      // '#tools_top > div, #tools_top': {\n      //   'line-height': {s: '17px', l: '34px', xl: '50px'}\n      // },\n      // '.dropdown button': {\n      //   height: {s: '18px', l: '34px', xl: '40px'},\n      //   'line-height': {s: '18px', l: '34px', xl: '40px'},\n      //   'margin-top': {s: '3px'}\n      // },\n      // '#tools_top label, #tools_bottom label': {\n      //   'font-size': {s: '1em', l: '1.5em', xl: '2em'},\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // 'div.toolset': {\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // '#tool_bold, #tool_italic': {\n      //   'font-size': {s: '1.5em', l: '3em', xl: '4.5em'}\n      // },\n      // '#sidepanels': {\n      //   top: {s: '50px', l: '88px', xl: '125px'},\n      //   bottom: {s: '51px', l: '68px', xl: '65px'}\n      // },\n      // '#layerbuttons': {\n      //   width: {l: '130px', xl: '175px'},\n      //   height: {l: '24px', xl: '30px'}\n      // },\n      // '#layerlist': {\n      //   width: {l: '128px', xl: '150px'}\n      // },\n      // '.layer_button': {\n      //   width: {l: '19px', xl: '28px'},\n      //   height: {l: '19px', xl: '28px'}\n      // },\n      // 'input.spin-button': {\n      //   'background-image': {l: 'url('images/spinbtn_updn_big.png')', xl: 'url('images/spinbtn_updn_big.png')'},\n      //   'background-position': {l: '100% -5px', xl: '100% -2px'},\n      //   'padding-right': {l: '24px', xl: '24px' }\n      // },\n      // 'input.spin-button.up': {\n      //   'background-position': {l: '100% -45px', xl: '100% -42px'}\n      // },\n      // 'input.spin-button.down': {\n      //   'background-position': {l: '100% -85px', xl: '100% -82px'}\n      // },\n      // '#position_opts': {\n      //   width: {all: (size_num*4) +'px'}\n      // }\n    };\n\n    let ruleElem = $('#tool_size_rules');\n    if (!ruleElem.length) {\n      ruleElem = $('<style id=\"tool_size_rules\"></style>').appendTo('head');\n    } else {\n      ruleElem.empty();\n    }\n\n    if (size !== 'm') {\n      let styleStr = '';\n      $.each(cssResizeRules, function (selector, rules) {\n        selector = '#svg_editor ' + selector.replace(/,/g, ', #svg_editor');\n        styleStr += selector + '{';\n        $.each(rules, function (prop, values) {\n          let val;\n          if (typeof values === 'number') {\n            val = (values * scale) + 'px';\n          } else if (values[size] || values.all) {\n            val = (values[size] || values.all);\n          }\n          styleStr += (prop + ':' + val + ';');\n        });\n        styleStr += '}';\n      });\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const prefix = '-' + uaPrefix.toLowerCase() + '-';\n      styleStr += (selToscale + '{' + prefix + 'transform: scale(' + scale + ');}' +\n        ' #svg_editor div.toolset .toolset {' + prefix + 'transform: scale(1); margin: 1px !important;}' + // Hack for markers\n        ' #svg_editor .ui-slider {' + prefix + 'transform: scale(' + (1 / scale) + ');}' // Hack for sliders\n      );\n      ruleElem.text(styleStr);\n    }\n\n    setFlyoutPositions();\n  };\n  $.svgIcons(curConfig.imgPath + 'svg_edit_icons.svg', {\n    w: 24, h: 24,\n    id_match: false,\n    no_img: !isWebkit(), // Opera & Firefox 4 gives odd behavior w/images\n    fallback_path: curConfig.imgPath,\n    fallback: {\n      logo: 'logo.png',\n\n      select: 'select.png',\n      select_node: 'select_node.png',\n\n      square: 'square.png',\n      rect: 'rect.png',\n      fh_rect: 'freehand-square.png',\n      circle: 'circle.png',\n      ellipse: 'ellipse.png',\n      fh_ellipse: 'freehand-circle.png',\n      pencil: 'fhpath.png',\n      pen: 'line.png',\n      text: 'text.png',\n      path: 'path.png',\n      add_subpath: 'add_subpath.png',\n      close_path: 'closepath.png',\n      open_path: 'openpath.png',\n\n      image: 'image.png',\n      zoom: 'zoom.png',\n\n      arrow_right: 'flyouth.png',\n      arrow_right_big: 'arrow_right_big.png',\n      arrow_down: 'dropdown.gif',\n      fill: 'fill.png',\n      stroke: 'stroke.png',\n      opacity: 'opacity.png',\n\n      new_image: 'clear.png',\n      save: 'save.png',\n      export: 'export.png',\n      open: 'open.png',\n      import: 'import.png',\n      docprops: 'document-properties.png',\n      source: 'source.png',\n      wireframe: 'wireframe.png',\n\n      undo: 'undo.png',\n      redo: 'redo.png',\n\n      clone: 'clone.png',\n      delete: 'delete.png',\n      go_up: 'go-up.png',\n      go_down: 'go-down.png',\n      context_menu: 'context_menu.png',\n      move_bottom: 'move_bottom.png',\n      move_top: 'move_top.png',\n      to_path: 'to_path.png',\n      link_controls: 'link_controls.png',\n      reorient: 'reorient.png',\n      group_elements: 'shape_group_elements.png',\n\n      ungroup: 'shape_ungroup.png',\n      unlink_use: 'unlink_use.png',\n      width: 'width.png',\n      height: 'height.png',\n      c_radius: 'c_radius.png',\n      angle: 'angle.png',\n      blur: 'blur.png',\n      fontsize: 'fontsize.png',\n      align: 'align.png',\n\n      align_left: 'align-left.png',\n      align_center: 'align-center.png',\n      align_right: 'align-right.png',\n      align_top: 'align-top.png',\n      align_middle: 'align-middle.png',\n      align_bottom: 'align-bottom.png',\n\n      linecap_butt: 'linecap_butt.png',\n      linecap_square: 'linecap_square.png',\n      linecap_round: 'linecap_round.png',\n      linejoin_miter: 'linejoin_miter.png',\n      linejoin_bevel: 'linejoin_bevel.png',\n      linejoin_round: 'linejoin_round.png',\n      eye: 'eye.png',\n      no_color: 'no_color.png',\n\n      ok: 'save.png',\n      cancel: 'cancel.png',\n      warning: 'warning.png',\n\n      node_delete: 'node_delete.png',\n      node_clone: 'node_clone.png',\n\n      globe_link: 'globe_link.png'\n    },\n    placement: {\n      '#logo': 'logo',\n\n      '#tool_clear div,#layer_new': 'new_image',\n      '#tool_save div': 'save',\n      '#tool_export div': 'export',\n      '#tool_open div div': 'open',\n      '#tool_import div div': 'import',\n      '#tool_source': 'source',\n      '#tool_docprops > div': 'docprops',\n      '#tool_wireframe': 'wireframe',\n\n      '#tool_undo': 'undo',\n      '#tool_redo': 'redo',\n\n      '#tool_select': 'select',\n      '#tool_fhpath': 'pencil',\n      '#tool_line': 'pen',\n      '#tool_rect,#tools_rect_show': 'rect',\n      '#tool_square': 'square',\n      '#tool_fhrect': 'fh_rect',\n      '#tool_ellipse,#tools_ellipse_show': 'ellipse',\n      '#tool_circle': 'circle',\n      '#tool_fhellipse': 'fh_ellipse',\n      '#tool_path': 'path',\n      '#tool_text,#layer_rename': 'text',\n      '#tool_image': 'image',\n      '#tool_zoom': 'zoom',\n\n      '#tool_clone,#tool_clone_multi': 'clone',\n      '#tool_node_clone': 'node_clone',\n      '#layer_delete,#tool_delete,#tool_delete_multi': 'delete',\n      '#tool_node_delete': 'node_delete',\n      '#tool_add_subpath': 'add_subpath',\n      '#tool_openclose_path': 'open_path',\n      '#tool_move_top': 'move_top',\n      '#tool_move_bottom': 'move_bottom',\n      '#tool_topath': 'to_path',\n      '#tool_node_link': 'link_controls',\n      '#tool_reorient': 'reorient',\n      '#tool_group_elements': 'group_elements',\n      '#tool_ungroup': 'ungroup',\n      '#tool_unlink_use': 'unlink_use',\n\n      '#tool_alignleft, #tool_posleft': 'align_left',\n      '#tool_aligncenter, #tool_poscenter': 'align_center',\n      '#tool_alignright, #tool_posright': 'align_right',\n      '#tool_aligntop, #tool_postop': 'align_top',\n      '#tool_alignmiddle, #tool_posmiddle': 'align_middle',\n      '#tool_alignbottom, #tool_posbottom': 'align_bottom',\n      '#cur_position': 'align',\n\n      '#linecap_butt,#cur_linecap': 'linecap_butt',\n      '#linecap_round': 'linecap_round',\n      '#linecap_square': 'linecap_square',\n\n      '#linejoin_miter,#cur_linejoin': 'linejoin_miter',\n      '#linejoin_round': 'linejoin_round',\n      '#linejoin_bevel': 'linejoin_bevel',\n\n      '#url_notice': 'warning',\n\n      '#layer_up': 'go_up',\n      '#layer_down': 'go_down',\n      '#layer_moreopts': 'context_menu',\n      '#layerlist td.layervis': 'eye',\n\n      '#tool_source_save,#tool_docprops_save,#tool_prefs_save': 'ok',\n      '#tool_source_cancel,#tool_docprops_cancel,#tool_prefs_cancel': 'cancel',\n\n      '#rwidthLabel, #iwidthLabel': 'width',\n      '#rheightLabel, #iheightLabel': 'height',\n      '#cornerRadiusLabel span': 'c_radius',\n      '#angleLabel': 'angle',\n      '#linkLabel,#tool_make_link,#tool_make_link_multi': 'globe_link',\n      '#zoomLabel': 'zoom',\n      '#tool_fill label': 'fill',\n      '#tool_stroke .icon_label': 'stroke',\n      '#group_opacityLabel': 'opacity',\n      '#blurLabel': 'blur',\n      '#font_sizeLabel': 'fontsize',\n\n      '.flyout_arrow_horiz': 'arrow_right',\n      '.dropdown button, #main_button .dropdown': 'arrow_down',\n      '#palette .palette_item:first, #fill_bg, #stroke_bg': 'no_color'\n    },\n    resize: {\n      '#logo .svg_icon': 28,\n      '.flyout_arrow_horiz .svg_icon': 5,\n      '.layer_button .svg_icon, #layerlist td.layervis .svg_icon': 14,\n      '.dropdown button .svg_icon': 7,\n      '#main_button .dropdown .svg_icon': 9,\n      '.palette_item:first .svg_icon': 15,\n      '#fill_bg .svg_icon, #stroke_bg .svg_icon': 16,\n      '.toolbar_button button .svg_icon': 16,\n      '.stroke_tool div div .svg_icon': 20,\n      '#tools_bottom label .svg_icon': 18\n    },\n    async callback (icons) {\n      $('.toolbar_button button > svg, .toolbar_button button > img').each(function () {\n        $(this).parent().prepend(this);\n      });\n\n      const tleft = $('#tools_left');\n\n      let minHeight;\n      if (tleft.length) {\n        minHeight = tleft.offset().top + tleft.outerHeight();\n      }\n\n      const size = $.pref('iconsize');\n      editor.setIconSize(size || ($(window).height() < minHeight ? 's' : 'm'));\n\n      // Look for any missing flyout icons from plugins\n      $('.tools_flyout').each(function () {\n        const shower = $('#' + this.id + '_show');\n        const sel = shower.attr('data-curopt');\n        // Check if there's an icon here\n        if (!shower.children('svg, img').length) {\n          const clone = $(sel).children().clone();\n          if (clone.length) {\n            clone[0].removeAttribute('style'); // Needed for Opera\n            shower.append(clone);\n          }\n        }\n      });\n\n      /**\n       * Since stylesheets may be added out of order, we indicate the desired order\n       *   for defaults and others after them (in an indeterminate order).\n       * @param {string} stylesheetFile\n       * @returns {Integer|PositiveInfinity}\n       */\n      function getStylesheetPriority (stylesheetFile) {\n        switch (stylesheetFile) {\n        case 'jgraduate/css/jPicker.css':\n          return 1;\n        case 'jgraduate/css/jGraduate.css':\n          return 2;\n        case 'svg-editor.css':\n          return 3;\n        case 'spinbtn/jQuery.SpinButton.css':\n          return 4;\n        default:\n          return Infinity;\n        }\n      }\n      let stylesheets = $.loadingStylesheets.sort((a, b) => {\n        const priorityA = getStylesheetPriority(a);\n        const priorityB = getStylesheetPriority(b);\n        if (priorityA === priorityB) {\n          return 0;\n        }\n        return priorityA > priorityB;\n      });\n      if (curConfig.stylesheets.length) {\n        // Ensure a copy with unique items\n        stylesheets = [...new Set(curConfig.stylesheets)];\n        const idx = stylesheets.indexOf('@default');\n        if (idx > -1) {\n          stylesheets.splice(idx, 1, ...$.loadingStylesheets);\n        }\n      }\n      await loadStylesheets(stylesheets, {\n        acceptErrors ({stylesheetURL, reject, resolve}) {\n          if ($.loadingStylesheets.includes(stylesheetURL)) {\n            reject(new Error(`Missing expected stylesheet: ${stylesheetURL}`));\n            return;\n          }\n          resolve();\n        }\n      });\n      $('#svg_container')[0].style.visibility = 'visible';\n      await editor.runCallbacks();\n    }\n  });\n\n  /**\n  * @name module:SVGEditor.canvas\n  * @type {module:svgcanvas.SvgCanvas}\n  */\n  editor.canvas = svgCanvas = new SvgCanvas(\n    document.getElementById('svgcanvas'),\n    curConfig\n  );\n  const palette = [\n      // Todo: Make into configuration item?\n      '#000000', '#3f3f3f', '#7f7f7f', '#bfbfbf', '#ffffff',\n      '#ff0000', '#ff7f00', '#ffff00', '#7fff00',\n      '#00ff00', '#00ff7f', '#00ffff', '#007fff',\n      '#0000ff', '#7f00ff', '#ff00ff', '#ff007f',\n      '#7f0000', '#7f3f00', '#7f7f00', '#3f7f00',\n      '#007f00', '#007f3f', '#007f7f', '#003f7f',\n      '#00007f', '#3f007f', '#7f007f', '#7f003f',\n      '#ffaaaa', '#ffd4aa', '#ffffaa', '#d4ffaa',\n      '#aaffaa', '#aaffd4', '#aaffff', '#aad4ff',\n      '#aaaaff', '#d4aaff', '#ffaaff', '#ffaad4'\n    ],\n    modKey = (isMac() ? 'meta+' : 'ctrl+'), // ⌘\n    path = svgCanvas.pathActions,\n    {undoMgr} = svgCanvas,\n    workarea = $('#workarea'),\n    canvMenu = $('#cmenu_canvas'),\n    // layerMenu = $('#cmenu_layers'), // Unused\n    paintBox = {fill: null, stroke: null};\n\n  let resizeTimer, curScrollPos;\n  let exportWindow = null,\n    defaultImageURL = curConfig.imgPath + 'logo.png',\n    zoomInIcon = 'crosshair',\n    zoomOutIcon = 'crosshair',\n    uiContext = 'toolbars';\n\n  // For external openers\n  (function () {\n    // let the opener know SVG Edit is ready (now that config is set up)\n    const w = window.opener || window.parent;\n    if (w) {\n      try {\n        /**\n         * Triggered on a containing `document` (of `window.opener`\n         * or `window.parent`) when the editor is loaded.\n         * @event module:SVGEditor#event:svgEditorReadyEvent\n         * @type {Event}\n         * @property {true} bubbles\n         * @property {true} cancelable\n         */\n        /**\n         * @name module:SVGEditor.svgEditorReadyEvent\n         * @type {module:SVGEditor#event:svgEditorReadyEvent}\n         */\n        const svgEditorReadyEvent = new w.CustomEvent('svgEditorReady', {\n          bubbles: true,\n          cancelable: true\n        });\n        w.document.documentElement.dispatchEvent(svgEditorReadyEvent);\n      } catch (e) {}\n    }\n  }());\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const setSelectMode = function () {\n    const curr = $('.tool_button_current');\n    if (curr.length && curr[0].id !== 'tool_select') {\n      curr.removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n    svgCanvas.setMode('select');\n    workarea.css('cursor', 'auto');\n  };\n\n  // used to make the flyouts stay on the screen longer the very first time\n  // const flyoutspeed = 1250; // Currently unused\n  // let textBeingEntered = false; // Currently unused\n  const origTitle = $('title:first').text();\n  // Make [1,2,5] array\n  const rIntervals = [];\n  for (let i = 0.1; i < 1E5; i *= 10) {\n    rIntervals.push(i);\n    rIntervals.push(2 * i);\n    rIntervals.push(5 * i);\n  }\n\n  /**\n   * This function highlights the layer passed in (by fading out the other layers).\n   * If no layer is passed in, this function restores the other layers\n   * @param {string} [layerNameToHighlight]\n   * @returns {undefined}\n  */\n  const toggleHighlightLayer = function (layerNameToHighlight) {\n    let i;\n    const curNames = [], numLayers = svgCanvas.getCurrentDrawing().getNumLayers();\n    for (i = 0; i < numLayers; i++) {\n      curNames[i] = svgCanvas.getCurrentDrawing().getLayerName(i);\n    }\n\n    if (layerNameToHighlight) {\n      curNames.forEach((curName) => {\n        if (curName !== layerNameToHighlight) {\n          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);\n        }\n      });\n    } else {\n      curNames.forEach((curName) => {\n        svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);\n      });\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const populateLayers = function () {\n    svgCanvas.clearSelection();\n    const layerlist = $('#layerlist tbody').empty();\n    const selLayerNames = $('#selLayerNames').empty();\n    const drawing = svgCanvas.getCurrentDrawing();\n    const currentLayerName = drawing.getCurrentLayerName();\n    const icon = $.getSvgIcon('eye');\n    let layer = svgCanvas.getCurrentDrawing().getNumLayers();\n    // we get the layers in the reverse z-order (the layer rendered on top is listed first)\n    while (layer--) {\n      const name = drawing.getLayerName(layer);\n      const layerTr = $('<tr class=\"layer\">').toggleClass('layersel', name === currentLayerName);\n      const layerVis = $('<td class=\"layervis\">').toggleClass('layerinvis', !drawing.getLayerVisibility(name));\n      const layerName = $('<td class=\"layername\">' + name + '</td>');\n      layerlist.append(layerTr.append(layerVis, layerName));\n      selLayerNames.append('<option value=\"' + name + '\">' + name + '</option>');\n    }\n    if (icon !== undefined) {\n      const copy = icon.clone();\n      $('td.layervis', layerlist).append(copy);\n      $.resizeSvgIcons({'td.layervis .svg_icon': 14});\n    }\n    // handle selection of layer\n    $('#layerlist td.layername')\n      .mouseup(function (evt) {\n        $('#layerlist tr.layer').removeClass('layersel');\n        $(this.parentNode).addClass('layersel');\n        svgCanvas.setCurrentLayer(this.textContent);\n        evt.preventDefault();\n      })\n      .mouseover(function () {\n        toggleHighlightLayer(this.textContent);\n      })\n      .mouseout(function () {\n        toggleHighlightLayer();\n      });\n    $('#layerlist td.layervis').click(function () {\n      const row = $(this.parentNode).prevAll().length;\n      const name = $('#layerlist tr.layer:eq(' + row + ') td.layername').text();\n      const vis = $(this).hasClass('layerinvis');\n      svgCanvas.setLayerVisibility(name, vis);\n      $(this).toggleClass('layerinvis');\n    });\n\n    // if there were too few rows, let's add a few to make it not so lonely\n    let num = 5 - $('#layerlist tr.layer').size();\n    while (num-- > 0) {\n      // FIXME: there must a better way to do this\n      layerlist.append('<tr><td style=\"color:white\">_</td><td/></tr>');\n    }\n  };\n\n  let editingsource = false;\n  let origSource = '';\n\n  /**\n  * @param {Event} [e] Not used.\n  * @param {boolean} forSaving\n  * @returns {undefined}\n  */\n  const showSourceEditor = function (e, forSaving) {\n    if (editingsource) { return; }\n\n    editingsource = true;\n    origSource = svgCanvas.getSvgString();\n    $('#save_output_btns').toggle(Boolean(forSaving));\n    $('#tool_source_back').toggle(!forSaving);\n    $('#svg_source_textarea').val(origSource);\n    $('#svg_source_editor').fadeIn();\n    $('#svg_source_textarea').focus();\n  };\n\n  let selectedElement = null;\n  let multiselected = false;\n\n  /**\n  * @param {boolean} editmode\n  * @param {module:svgcanvas.SvgCanvas#event:selected} elems\n  * @returns {undefined}\n  */\n  const togglePathEditMode = function (editmode, elems) {\n    $('#path_node_panel').toggle(editmode);\n    $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);\n    if (editmode) {\n      // Change select icon\n      $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      setIcon('#tool_select', 'select_node');\n      multiselected = false;\n      if (elems.length) {\n        selectedElement = elems[0];\n      }\n    } else {\n      setTimeout(() => {\n        setIcon('#tool_select', 'select');\n      }, 1000);\n    }\n  };\n\n  /**\n   * @type {module:svgcanvas.EventHandler}\n   * @param {external:Window} wind\n   * @param {module:svgcanvas.SvgCanvas#event:saved} svg The SVG source\n   * @listens module:svgcanvas.SvgCanvas#event:saved\n   * @returns {undefined}\n   */\n  const saveHandler = function (wind, svg) {\n    editor.showSaveWarning = false;\n\n    // by default, we add the XML prolog back, systems integrating SVG-edit (wikis, CMSs)\n    // can just provide their own custom save handler and might not want the XML prolog\n    svg = '<?xml version=\"1.0\"?>\\n' + svg;\n\n    // IE9 doesn't allow standalone Data URLs\n    // https://connect.microsoft.com/IE/feedback/details/542600/data-uri-images-fail-when-loaded-by-themselves\n    if (isIE()) {\n      showSourceEditor(0, true);\n      return;\n    }\n\n    // Since saving SVGs by opening a new window was removed in Chrome use artificial link-click\n    // https://stackoverflow.com/questions/45603201/window-is-not-allowed-to-navigate-top-frame-navigations-to-data-urls\n    const a = document.createElement('a');\n    a.href = 'data:image/svg+xml;base64,' + Utils.encode64(svg);\n    a.download = 'icon.svg';\n    a.style = 'display: none;';\n    document.body.append(a); // Need to append for Firefox\n\n    a.click();\n\n    // Alert will only appear the first time saved OR the\n    //   first time the bug is encountered\n    let done = $.pref('save_notice_done');\n\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', 'SVG');\n      // Check if FF and has <defs/>\n      if (isGecko()) {\n        if (svg.includes('<defs')) {\n          // warning about Mozilla bug #308590 when applicable (seems to be fixed now in Feb 2013)\n          note += '\\n\\n' + uiStrings.notification.defsFailOnSave;\n          $.pref('save_notice_done', 'all');\n          done = 'all';\n        } else {\n          $.pref('save_notice_done', 'part');\n        }\n      } else {\n        $.pref('save_notice_done', 'all');\n      }\n      if (done !== 'part') {\n        $.alert(note);\n      }\n    }\n  };\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:exported} data\n   * @listens module:svgcanvas.SvgCanvas#event:exported\n   * @returns {undefined}\n   */\n  const exportHandler = function (win, data) {\n    const {issues, exportWindowName} = data;\n\n    exportWindow = window.open(Utils.blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n\n    if (!exportWindow || exportWindow.closed) {\n      /* await */ $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n\n    exportWindow.location.href = data.bloburl || data.datauri;\n    const done = $.pref('export_notice_done');\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', data.type);\n\n      // Check if there are issues\n      if (issues.length) {\n        const pre = '\\n \\u2022 ';\n        note += ('\\n\\n' + uiStrings.notification.noteTheseIssues + pre + issues.join(pre));\n      }\n\n      // Note that this will also prevent the notice even though new issues may appear later.\n      // May want to find a way to deal with that without annoying the user\n      $.pref('export_notice_done', 'all');\n      exportWindow.alert(note);\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const operaRepaint = function () {\n    // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change\n    if (!window.opera) {\n      return;\n    }\n    $('<p/>').hide().appendTo('body').remove();\n  };\n\n  /**\n   *\n   * @param {Element} opt\n   * @param {boolean} changeElem\n   * @returns {undefined}\n   */\n  function setStrokeOpt (opt, changeElem) {\n    const {id} = opt;\n    const bits = id.split('_');\n    const [pre, val] = bits;\n\n    if (changeElem) {\n      svgCanvas.setStrokeAttr('stroke-' + pre, val);\n    }\n    operaRepaint();\n    setIcon('#cur_' + pre, id, 20);\n    $(opt).addClass('current').siblings().removeClass('current');\n  }\n\n  /**\n  * This is a common function used when a tool has been clicked (chosen).\n  * It does several common things:\n  * - Removes the `tool_button_current` class from whatever tool currently has it.\n  * - Hides any flyouts.\n  * - Adds the `tool_button_current` class to the button passed in.\n  * @function module:SVGEDitor.toolButtonClick\n  * @param {string|Element} button The DOM element or string selector representing the toolbar button\n  * @param {boolean} noHiding Whether not to hide any flyouts\n  * @returns {boolean} Whether the button was disabled or not\n  */\n  const toolButtonClick = editor.toolButtonClick = function (button, noHiding) {\n    if ($(button).hasClass('disabled')) { return false; }\n    if ($(button).parent().hasClass('tools_flyout')) { return true; }\n    const fadeFlyouts = 'normal';\n    if (!noHiding) {\n      $('.tools_flyout').fadeOut(fadeFlyouts);\n    }\n    $('#styleoverrides').text('');\n    workarea.css('cursor', 'auto');\n    $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n    $(button).addClass('tool_button_current').removeClass('tool_button');\n    return true;\n  };\n\n  /**\n  * Unless the select toolbar button is disabled, sets the button\n  * and sets the select mode and cursor styles.\n  * @function module:SVGEditor.clickSelect\n  * @returns {undefined}\n  */\n  const clickSelect = editor.clickSelect = function () {\n    if (toolButtonClick('#tool_select')) {\n      svgCanvas.setMode('select');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n  };\n\n  /**\n  * Set a selected image's URL.\n  * @function module:SVGEditor.setImageURL\n  * @param {string} url\n  * @returns {undefined}\n  */\n  const setImageURL = editor.setImageURL = function (url) {\n    if (!url) {\n      url = defaultImageURL;\n    }\n    svgCanvas.setImageURL(url);\n    $('#image_url').val(url);\n\n    if (url.startsWith('data:')) {\n      // data URI found\n      $('#image_url').hide();\n      $('#change_image_url').show();\n    } else {\n      // regular URL\n      svgCanvas.embedImage(url, function (dataURI) {\n        // Couldn't embed, so show warning\n        $('#url_notice').toggle(!dataURI);\n        defaultImageURL = url;\n      });\n      $('#image_url').show();\n      $('#change_image_url').hide();\n    }\n  };\n\n  /**\n   *\n   * @param {string} color\n   * @param {string} url\n   * @returns {undefined}\n   */\n  function setBackground (color, url) {\n    // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }\n    $.pref('bkgd_color', color);\n    $.pref('bkgd_url', url);\n\n    // This should be done in svgcanvas.js for the borderRect fill\n    svgCanvas.setBackground(color, url);\n  }\n\n  /**\n   * @param {PlainObject} [opts={}]\n   * @param {boolean} [opts.cancelDeletes=false}]\n   * @returns {Promise} Resolves to `undefined`\n   */\n  async function promptImgURL ({cancelDeletes = false} = {}) {\n    let curhref = svgCanvas.getHref(selectedElement);\n    curhref = curhref.startsWith('data:') ? '' : curhref;\n    const url = await $.prompt(uiStrings.notification.enterNewImgURL, curhref);\n    if (url) {\n      setImageURL(url);\n    } else if (cancelDeletes) {\n      svgCanvas.deleteSelectedElements();\n    }\n  }\n\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  const setInputWidth = function (elem) {\n    const w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);\n    $(elem).width(w);\n  };\n\n  /**\n   *\n   * @param {HTMLDivElement} [scanvas]\n   * @param {Float} [zoom]\n   * @returns {undefined}\n   */\n  function updateRulers (scanvas, zoom) {\n    if (!zoom) { zoom = svgCanvas.getZoom(); }\n    if (!scanvas) { scanvas = $('#svgcanvas'); }\n\n    let d, i;\n    const limit = 30000;\n    const contentElem = svgCanvas.getContentElem();\n    const units = getTypeMap();\n    const unit = units[curConfig.baseUnit]; // 1 = 1px\n\n    // draw x ruler then y ruler\n    for (d = 0; d < 2; d++) {\n      const isX = (d === 0);\n      const dim = isX ? 'x' : 'y';\n      const lentype = isX ? 'width' : 'height';\n      const contentDim = Number(contentElem.getAttribute(dim));\n\n      const $hcanvOrig = $('#ruler_' + dim + ' canvas:first');\n\n      // Bit of a hack to fully clear the canvas in Safari & IE9\n      const $hcanv = $hcanvOrig.clone();\n      $hcanvOrig.replaceWith($hcanv);\n\n      const hcanv = $hcanv[0];\n\n      // Set the canvas size to the width of the container\n      let rulerLen = scanvas[lentype]();\n      const totalLen = rulerLen;\n      hcanv.parentNode.style[lentype] = totalLen + 'px';\n      let ctx = hcanv.getContext('2d');\n      let ctxArr, num, ctxArrNum;\n\n      ctx.fillStyle = 'rgb(200,0,0)';\n      ctx.fillRect(0, 0, hcanv.width, hcanv.height);\n\n      // Remove any existing canvasses\n      $hcanv.siblings().remove();\n\n      // Create multiple canvases when necessary (due to browser limits)\n      if (rulerLen >= limit) {\n        ctxArrNum = parseInt(rulerLen / limit) + 1;\n        ctxArr = [];\n        ctxArr[0] = ctx;\n        let copy;\n        for (i = 1; i < ctxArrNum; i++) {\n          hcanv[lentype] = limit;\n          copy = hcanv.cloneNode(true);\n          hcanv.parentNode.append(copy);\n          ctxArr[i] = copy.getContext('2d');\n        }\n\n        copy[lentype] = rulerLen % limit;\n\n        // set copy width to last\n        rulerLen = limit;\n      }\n\n      hcanv[lentype] = rulerLen;\n\n      const uMulti = unit * zoom;\n\n      // Calculate the main number interval\n      const rawM = 50 / uMulti;\n      let multi = 1;\n      for (i = 0; i < rIntervals.length; i++) {\n        num = rIntervals[i];\n        multi = num;\n        if (rawM <= num) {\n          break;\n        }\n      }\n\n      const bigInt = multi * uMulti;\n\n      ctx.font = '9px sans-serif';\n\n      let rulerD = ((contentDim / uMulti) % multi) * uMulti;\n      let labelPos = rulerD - bigInt;\n      // draw big intervals\n      let ctxNum = 0;\n      while (rulerD < totalLen) {\n        labelPos += bigInt;\n        // const realD = rulerD - contentDim; // Currently unused\n\n        const curD = Math.round(rulerD) + 0.5;\n        if (isX) {\n          ctx.moveTo(curD, 15);\n          ctx.lineTo(curD, 0);\n        } else {\n          ctx.moveTo(15, curD);\n          ctx.lineTo(0, curD);\n        }\n\n        num = (labelPos - contentDim) / uMulti;\n        let label;\n        if (multi >= 1) {\n          label = Math.round(num);\n        } else {\n          const decs = String(multi).split('.')[1].length;\n          label = num.toFixed(decs);\n        }\n\n        // Change 1000s to Ks\n        if (label !== 0 && label !== 1000 && label % 1000 === 0) {\n          label = (label / 1000) + 'K';\n        }\n\n        if (isX) {\n          ctx.fillText(label, rulerD + 2, 8);\n        } else {\n          // draw label vertically\n          const str = String(label).split('');\n          for (i = 0; i < str.length; i++) {\n            ctx.fillText(str[i], 1, (rulerD + 9) + i * 9);\n          }\n        }\n\n        const part = bigInt / 10;\n        // draw the small intervals\n        for (i = 1; i < 10; i++) {\n          let subD = Math.round(rulerD + part * i) + 0.5;\n          if (ctxArr && subD > rulerLen) {\n            ctxNum++;\n            ctx.stroke();\n            if (ctxNum >= ctxArrNum) {\n              i = 10;\n              rulerD = totalLen;\n              continue;\n            }\n            ctx = ctxArr[ctxNum];\n            rulerD -= limit;\n            subD = Math.round(rulerD + part * i) + 0.5;\n          }\n\n          // odd lines are slighly longer\n          const lineNum = (i % 2) ? 12 : 10;\n          if (isX) {\n            ctx.moveTo(subD, 15);\n            ctx.lineTo(subD, lineNum);\n          } else {\n            ctx.moveTo(15, subD);\n            ctx.lineTo(lineNum, subD);\n          }\n        }\n        rulerD += bigInt;\n      }\n      ctx.strokeStyle = '#000';\n      ctx.stroke();\n    }\n  }\n\n  /**\n  * @function module:SVGEditor.updateCanvas\n  * @param {boolean} center\n  * @param {module:math.XYObject} newCtr\n  * @returns {undefined}\n  */\n  const updateCanvas = editor.updateCanvas = function (center, newCtr) {\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n    const cnvs = $('#svgcanvas');\n\n    let w = workarea.width(), h = workarea.height();\n    const wOrig = w, hOrig = h;\n    const oldCtr = {\n      x: wArea[0].scrollLeft + wOrig / 2,\n      y: wArea[0].scrollTop + hOrig / 2\n    };\n    const multi = curConfig.canvas_expansion;\n    w = Math.max(wOrig, svgCanvas.contentW * zoom * multi);\n    h = Math.max(hOrig, svgCanvas.contentH * zoom * multi);\n\n    if (w === wOrig && h === hOrig) {\n      workarea.css('overflow', 'hidden');\n    } else {\n      workarea.css('overflow', 'scroll');\n    }\n\n    const oldCanY = cnvs.height() / 2;\n    const oldCanX = cnvs.width() / 2;\n    cnvs.width(w).height(h);\n    const newCanY = h / 2;\n    const newCanX = w / 2;\n    const offset = svgCanvas.updateCanvas(w, h);\n\n    const ratio = newCanX / oldCanX;\n\n    const scrollX = w / 2 - wOrig / 2; // eslint-disable-line no-shadow\n    const scrollY = h / 2 - hOrig / 2; // eslint-disable-line no-shadow\n\n    if (!newCtr) {\n      const oldDistX = oldCtr.x - oldCanX;\n      const newX = newCanX + oldDistX * ratio;\n\n      const oldDistY = oldCtr.y - oldCanY;\n      const newY = newCanY + oldDistY * ratio;\n\n      newCtr = {\n        x: newX,\n        y: newY\n      };\n    } else {\n      newCtr.x += offset.x;\n      newCtr.y += offset.y;\n    }\n\n    if (center) {\n      // Go to top-left for larger documents\n      if (svgCanvas.contentW > wArea.width()) {\n        // Top-left\n        workarea[0].scrollLeft = offset.x - 10;\n        workarea[0].scrollTop = offset.y - 10;\n      } else {\n        // Center\n        wArea[0].scrollLeft = scrollX;\n        wArea[0].scrollTop = scrollY;\n      }\n    } else {\n      wArea[0].scrollLeft = newCtr.x - wOrig / 2;\n      wArea[0].scrollTop = newCtr.y - hOrig / 2;\n    }\n    if (curConfig.showRulers) {\n      updateRulers(cnvs, zoom);\n      workarea.scroll();\n    }\n\n    if (urldata.storagePrompt !== true && editor.storagePromptState === 'ignore') {\n      $('#dialog_box').hide();\n    }\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n   * @returns {undefined}\n   */\n  const updateToolButtonState = function () {\n    const bNoFill = (svgCanvas.getColor('fill') === 'none');\n    const bNoStroke = (svgCanvas.getColor('stroke') === 'none');\n    const buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];\n    const buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];\n\n    if (bNoStroke) {\n      buttonsNeedingStroke.forEach((btn) => {\n        if ($(btn).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(btn).addClass('disabled');\n      });\n    } else {\n      buttonsNeedingStroke.forEach((btn) => {\n        $(btn).removeClass('disabled');\n      });\n    }\n\n    if (bNoStroke && bNoFill) {\n      buttonsNeedingFillAndStroke.forEach((btn) => {\n        if ($(btn).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(btn).addClass('disabled');\n      });\n    } else {\n      buttonsNeedingFillAndStroke.forEach((btn) => {\n        $(btn).removeClass('disabled');\n      });\n    }\n\n    svgCanvas.runExtensions('toolButtonStateUpdate', /** @type {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} */ {\n      nofill: bNoFill,\n      nostroke: bNoStroke\n    });\n\n    // Disable flyouts if all inside are disabled\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      let hasEnabled = false;\n      $(this).children().each(function () {\n        if (!$(this).hasClass('disabled')) {\n          hasEnabled = true;\n        }\n      });\n      shower.toggleClass('disabled', !hasEnabled);\n    });\n\n    operaRepaint();\n  };\n\n  /**\n  * Updates the toolbar (colors, opacity, etc) based on the selected element.\n  * This function also updates the opacity and id elements that are in the\n  * context panel.\n  * @returns {undefined}\n  */\n  const updateToolbar = function () {\n    let i, len;\n    if (!Utils.isNullish(selectedElement)) {\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        break;\n      case 'g':\n      case 'a': {\n        // Look for common styles\n        const childs = selectedElement.getElementsByTagName('*');\n        let gWidth = null;\n        for (i = 0, len = childs.length; i < len; i++) {\n          const swidth = childs[i].getAttribute('stroke-width');\n\n          if (i === 0) {\n            gWidth = swidth;\n          } else if (gWidth !== swidth) {\n            gWidth = null;\n          }\n        }\n\n        $('#stroke_width').val(gWidth === null ? '' : gWidth);\n\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        break;\n      } default: {\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        $('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);\n        $('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');\n\n        let attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';\n\n        if ($('#linejoin_' + attr).length) {\n          setStrokeOpt($('#linejoin_' + attr)[0]);\n        }\n\n        attr = selectedElement.getAttribute('stroke-linecap') || 'butt';\n\n        if ($('#linecap_' + attr).length) {\n          setStrokeOpt($('#linecap_' + attr)[0]);\n        }\n      }\n      }\n    }\n\n    // All elements including image and group have opacity\n    if (!Utils.isNullish(selectedElement)) {\n      const opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;\n      $('#group_opacity').val(opacPerc);\n      $('#opac_slider').slider('option', 'value', opacPerc);\n      $('#elem_id').val(selectedElement.id);\n      $('#elem_class').val(selectedElement.getAttribute('class'));\n    }\n\n    updateToolButtonState();\n  };\n\n  /**\n  * Updates the context panel tools based on the selected element.\n  * @returns {undefined}\n  */\n  const updateContextPanel = function () {\n    let elem = selectedElement;\n    // If element has just been deleted, consider it null\n    if (!Utils.isNullish(elem) && !elem.parentNode) { elem = null; }\n    const currentLayerName = svgCanvas.getCurrentDrawing().getCurrentLayerName();\n    const currentMode = svgCanvas.getMode();\n    const unit = curConfig.baseUnit !== 'px' ? curConfig.baseUnit : null;\n\n    const isNode = currentMode === 'pathedit'; // elem ? (elem.id && elem.id.startsWith('pathpointgrip')) : false;\n    const menuItems = $('#cmenu_canvas li');\n    $('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' +\n      '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' +\n      ' #use_panel, #a_panel').hide();\n    if (!Utils.isNullish(elem)) {\n      const elname = elem.nodeName;\n      // If this is a link with no transform and one child, pretend\n      // its child is selected\n      // if (elname === 'a') { // && !$(elem).attr('transform')) {\n      //   elem = elem.firstChild;\n      // }\n\n      const angle = svgCanvas.getRotationAngle(elem);\n      $('#angle').val(angle);\n\n      const blurval = svgCanvas.getBlur(elem);\n      $('#blur').val(blurval);\n      $('#blur_slider').slider('option', 'value', blurval);\n\n      if (svgCanvas.addedNew) {\n        if (elname === 'image' && svgCanvas.getMode() === 'image') {\n          // Prompt for URL if not a data URL\n          if (!svgCanvas.getHref(elem).startsWith('data:')) {\n            /* await */ promptImgURL({cancelDeletes: true});\n          }\n        }\n        /* else if (elname == 'text') {\n          // TODO: Do something here for new text\n        } */\n      }\n\n      if (!isNode && currentMode !== 'pathedit') {\n        $('#selected_panel').show();\n        // Elements in this array already have coord fields\n        if (['line', 'circle', 'ellipse'].includes(elname)) {\n          $('#xy_panel').hide();\n        } else {\n          let x, y;\n\n          // Get BBox vals for g, polyline and path\n          if (['g', 'polyline', 'path'].includes(elname)) {\n            const bb = svgCanvas.getStrokedBBox([elem]);\n            if (bb) {\n              ({x, y} = bb);\n            }\n          } else {\n            x = elem.getAttribute('x');\n            y = elem.getAttribute('y');\n          }\n\n          if (unit) {\n            x = convertUnit(x);\n            y = convertUnit(y);\n          }\n\n          $('#selected_x').val(x || 0);\n          $('#selected_y').val(y || 0);\n          $('#xy_panel').show();\n        }\n\n        // Elements in this array cannot be converted to a path\n        const noPath = !['image', 'text', 'path', 'g', 'use'].includes(elname);\n        $('#tool_topath').toggle(noPath);\n        $('#tool_reorient').toggle(elname === 'path');\n        $('#tool_reorient').toggleClass('disabled', angle === 0);\n      } else {\n        const point = path.getNodePoint();\n        $('#tool_add_subpath').removeClass('push_button_pressed').addClass('tool_button');\n        $('#tool_node_delete').toggleClass('disabled', !path.canDeleteNodes);\n\n        // Show open/close button based on selected point\n        setIcon('#tool_openclose_path', path.closed_subpath ? 'open_path' : 'close_path');\n\n        if (point) {\n          const segType = $('#seg_type');\n          if (unit) {\n            point.x = convertUnit(point.x);\n            point.y = convertUnit(point.y);\n          }\n          $('#path_node_x').val(point.x);\n          $('#path_node_y').val(point.y);\n          if (point.type) {\n            segType.val(point.type).removeAttr('disabled');\n          } else {\n            segType.val(4).attr('disabled', 'disabled');\n          }\n        }\n        return;\n      }\n\n      // update contextual tools here\n      const panels = {\n        g: [],\n        a: [],\n        rect: ['rx', 'width', 'height'],\n        image: ['width', 'height'],\n        circle: ['cx', 'cy', 'r'],\n        ellipse: ['cx', 'cy', 'rx', 'ry'],\n        line: ['x1', 'y1', 'x2', 'y2'],\n        text: [],\n        use: []\n      };\n\n      const {tagName} = elem;\n\n      // if ($(elem).data('gsvg')) {\n      //   $('#g_panel').show();\n      // }\n\n      let linkHref = null;\n      if (tagName === 'a') {\n        linkHref = svgCanvas.getHref(elem);\n        $('#g_panel').show();\n      }\n\n      if (elem.parentNode.tagName === 'a') {\n        if (!$(elem).siblings().length) {\n          $('#a_panel').show();\n          linkHref = svgCanvas.getHref(elem.parentNode);\n        }\n      }\n\n      // Hide/show the make_link buttons\n      $('#tool_make_link, #tool_make_link').toggle(!linkHref);\n\n      if (linkHref) {\n        $('#link_url').val(linkHref);\n      }\n\n      if (panels[tagName]) {\n        const curPanel = panels[tagName];\n\n        $('#' + tagName + '_panel').show();\n\n        $.each(curPanel, function (i, item) {\n          let attrVal = elem.getAttribute(item);\n          if (curConfig.baseUnit !== 'px' && elem[item]) {\n            const bv = elem[item].baseVal.value;\n            attrVal = convertUnit(bv);\n          }\n          $('#' + tagName + '_' + item).val(attrVal || 0);\n        });\n\n        if (tagName === 'text') {\n          $('#text_panel').css('display', 'inline');\n          $('#tool_font_size').css('display', 'inline');\n          if (svgCanvas.getItalic()) {\n            $('#tool_italic').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_italic').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          if (svgCanvas.getBold()) {\n            $('#tool_bold').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_bold').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          $('#font_family').val(elem.getAttribute('font-family'));\n          $('#font_size').val(elem.getAttribute('font-size'));\n          $('#text').val(elem.textContent);\n          if (svgCanvas.addedNew) {\n            // Timeout needed for IE9\n            setTimeout(function () {\n              $('#text').focus().select();\n            }, 100);\n          }\n        // text\n        } else if (tagName === 'image' && svgCanvas.getMode() === 'image') {\n          setImageURL(svgCanvas.getHref(elem));\n        // image\n        } else if (tagName === 'g' || tagName === 'use') {\n          $('#container_panel').show();\n          const title = svgCanvas.getTitle();\n          const label = $('#g_title')[0];\n          label.value = title;\n          setInputWidth(label);\n          $('#g_title').prop('disabled', tagName === 'use');\n        }\n      }\n      menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');\n      menuItems[((tagName === 'g' || !multiselected) ? 'dis' : 'en') + 'ableContextMenuItems']('#group');\n    // if (!Utils.isNullish(elem))\n    } else if (multiselected) {\n      $('#multiselected_panel').show();\n      menuItems\n        .enableContextMenuItems('#group')\n        .disableContextMenuItems('#ungroup');\n    } else {\n      menuItems.disableContextMenuItems('#delete,#cut,#copy,#group,#ungroup,#move_front,#move_up,#move_down,#move_back');\n    }\n\n    // update history buttons\n    $('#tool_undo').toggleClass('disabled', undoMgr.getUndoStackSize() === 0);\n    $('#tool_redo').toggleClass('disabled', undoMgr.getRedoStackSize() === 0);\n\n    svgCanvas.addedNew = false;\n\n    if ((elem && !isNode) || multiselected) {\n      // update the selected elements' layer\n      $('#selLayerNames').removeAttr('disabled').val(currentLayerName);\n\n      // Enable regular menu options\n      canvMenu.enableContextMenuItems(\n        '#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back'\n      );\n    } else {\n      $('#selLayerNames').attr('disabled', 'disabled');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const updateWireFrame = function () {\n    // Test support\n    if (supportsNonSS) { return; }\n\n    const rule = `\n      #workarea.wireframe #svgcontent * {\n        stroke-width: ${1 / svgCanvas.getZoom()}px;\n      }\n    `;\n    $('#wireframe_rules').text(workarea.hasClass('wireframe') ? rule : '');\n  };\n\n  let curContext = '';\n\n  /**\n  * @param {string} [title=svgCanvas.getDocumentTitle()]\n  * @returns {undefined}\n  */\n  const updateTitle = function (title) {\n    title = title || svgCanvas.getDocumentTitle();\n    const newTitle = origTitle + (title ? ': ' + title : '');\n\n    // Remove title update with current context info, isn't really necessary\n    // if (curContext) {\n    //   new_title = new_title + curContext;\n    // }\n    $('title:first').text(newTitle);\n  };\n\n  // called when we've selected a different element\n  /**\n  *\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:selected} elems Array of elements that were selected\n  * @listens module:svgcanvas.SvgCanvas#event:selected\n  * @fires module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n  * @returns {undefined}\n  */\n  const selectedChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n    const isNode = mode === 'pathedit';\n    // if elems[1] is present, then we have more than one element\n    selectedElement = (elems.length === 1 || Utils.isNullish(elems[1]) ? elems[0] : null);\n    multiselected = (elems.length >= 2 && !Utils.isNullish(elems[1]));\n    if (!Utils.isNullish(selectedElement)) {\n      // unless we're already in always set the mode of the editor to select because\n      // upon creation of a text element the editor is switched into\n      // select mode and this event fires - we need our UI to be in sync\n\n      if (!isNode) {\n        updateToolbar();\n      }\n    } // if (!Utils.isNullish(elem))\n\n    // Deal with pathedit mode\n    togglePathEditMode(isNode, elems);\n    updateContextPanel();\n    svgCanvas.runExtensions('selectedChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} */ {\n      elems,\n      selectedElement,\n      multiselected\n    });\n  };\n\n  // Call when part of element is in process of changing, generally\n  // on mousemove actions like rotate, move, etc.\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:transition} elems\n   * @listens module:svgcanvas.SvgCanvas#event:transition\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementTransition\n   * @returns {undefined}\n   */\n  const elementTransition = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    const elem = elems[0];\n\n    if (!elem) {\n      return;\n    }\n\n    multiselected = (elems.length >= 2 && !Utils.isNullish(elems[1]));\n    // Only updating fields for single elements for now\n    if (!multiselected) {\n      switch (mode) {\n      case 'rotate': {\n        const ang = svgCanvas.getRotationAngle(elem);\n        $('#angle').val(ang);\n        $('#tool_reorient').toggleClass('disabled', ang === 0);\n        break;\n\n      // TODO: Update values that change on move/resize, etc\n      // } case 'select': {\n      // } case 'resize': {\n      //   break;\n      // }\n      }\n      }\n    }\n    svgCanvas.runExtensions('elementTransition', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementTransition} */ {\n      elems\n    });\n  };\n\n  /**\n   * Test whether an element is a layer or not.\n   * @param {SVGGElement} elem - The SVGGElement to test.\n   * @returns {boolean} True if the element is a layer\n   */\n  function isLayer (elem) {\n    return elem && elem.tagName === 'g' && Layer.CLASS_REGEX.test(elem.getAttribute('class'));\n  }\n\n  // called when any element has changed\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:changed} elems\n   * @listens module:svgcanvas.SvgCanvas#event:changed\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementChanged\n   * @returns {undefined}\n   */\n  const elementChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n\n    for (let i = 0; i < elems.length; ++i) {\n      const elem = elems[i];\n\n      const isSvgElem = (elem && elem.tagName === 'svg');\n      if (isSvgElem || isLayer(elem)) {\n        populateLayers();\n        // if the element changed was the svg, then it could be a resolution change\n        if (isSvgElem) {\n          updateCanvas();\n        }\n      // Update selectedElement if element is no longer part of the image.\n      // This occurs for the text elements in Firefox\n      } else if (elem && selectedElement && Utils.isNullish(selectedElement.parentNode)) {\n        // || elem && elem.tagName == \"path\" && !multiselected) { // This was added in r1430, but not sure why\n        selectedElement = elem;\n      }\n    }\n\n    editor.showSaveWarning = true;\n\n    // we update the contextual panel with potentially new\n    // positional/sizing information (we DON'T want to update the\n    // toolbar here as that creates an infinite loop)\n    // also this updates the history buttons\n\n    // we tell it to skip focusing the text control if the\n    // text element was previously in focus\n    updateContextPanel();\n\n    // In the event a gradient was flipped:\n    if (selectedElement && mode === 'select') {\n      paintBox.fill.update();\n      paintBox.stroke.update();\n    }\n\n    svgCanvas.runExtensions('elementChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementChanged} */ {\n      elems\n    });\n  };\n\n  /**\n   * @returns {undefined}\n   */\n  const zoomDone = function () {\n    updateWireFrame();\n    // updateCanvas(); // necessary?\n  };\n\n  /**\n  * @typedef {PlainObject} module:SVGEditor.BBoxObjectWithFactor (like `DOMRect`)\n  * @property {Float} x\n  * @property {Float} y\n  * @property {Float} width\n  * @property {Float} height\n  * @property {Float} [factor] Needed if width or height are 0\n  * @property {Float} [zoom]\n  * @see module:svgcanvas.SvgCanvas#event:zoomed\n  */\n\n  /**\n  * @function module:svgcanvas.SvgCanvas#zoomChanged\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:zoomed} bbox\n  * @param {boolean} autoCenter\n  * @listens module:svgcanvas.SvgCanvas#event:zoomed\n  * @returns {undefined}\n  */\n  const zoomChanged = svgCanvas.zoomChanged = function (win, bbox, autoCenter) {\n    const scrbar = 15,\n      // res = svgCanvas.getResolution(), // Currently unused\n      wArea = workarea;\n    // const canvasPos = $('#svgcanvas').position(); // Currently unused\n    const zInfo = svgCanvas.setBBoxZoom(bbox, wArea.width() - scrbar, wArea.height() - scrbar);\n    if (!zInfo) { return; }\n    const zoomlevel = zInfo.zoom,\n      bb = zInfo.bbox;\n\n    if (zoomlevel < 0.001) {\n      changeZoom({value: 0.1});\n      return;\n    }\n\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    if (autoCenter) {\n      updateCanvas();\n    } else {\n      updateCanvas(false, {x: bb.x * zoomlevel + (bb.width * zoomlevel) / 2, y: bb.y * zoomlevel + (bb.height * zoomlevel) / 2});\n    }\n\n    if (svgCanvas.getMode() === 'zoom' && bb.width) {\n      // Go to select if a zoom box was drawn\n      setSelectMode();\n    }\n\n    zoomDone();\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeZoom = function (ctl) {\n    const zoomlevel = ctl.value / 100;\n    if (zoomlevel < 0.001) {\n      ctl.value = 0.1;\n      return;\n    }\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n\n    zoomChanged(window, {\n      width: 0,\n      height: 0,\n      // center pt of scroll position\n      x: (wArea[0].scrollLeft + wArea.width() / 2) / zoom,\n      y: (wArea[0].scrollTop + wArea.height() / 2) / zoom,\n      zoom: zoomlevel\n    }, true);\n  };\n\n  $('#cur_context_panel').delegate('a', 'click', function () {\n    const link = $(this);\n    if (link.attr('data-root')) {\n      svgCanvas.leaveContext();\n    } else {\n      svgCanvas.setContext(link.text());\n    }\n    svgCanvas.clearSelection();\n    return false;\n  });\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:contextset} context\n   * @listens module:svgcanvas.SvgCanvas#event:contextset\n   * @returns {undefined}\n   */\n  const contextChanged = function (win, context) {\n    let linkStr = '';\n    if (context) {\n      let str = '';\n      linkStr = '<a href=\"#\" data-root=\"y\">' + svgCanvas.getCurrentDrawing().getCurrentLayerName() + '</a>';\n\n      $(context).parentsUntil('#svgcontent > g').andSelf().each(function () {\n        if (this.id) {\n          str += ' > ' + this.id;\n          if (this !== context) {\n            linkStr += ' > <a href=\"#\">' + this.id + '</a>';\n          } else {\n            linkStr += ' > ' + this.id;\n          }\n        }\n      });\n\n      curContext = str;\n    } else {\n      curContext = null;\n    }\n    $('#cur_context_panel').toggle(Boolean(context)).html(linkStr);\n\n    updateTitle();\n  };\n\n  /**\n  * Makes sure the current selected paint is available to work with.\n  * @returns {undefined}\n  */\n  const prepPaints = function () {\n    paintBox.fill.prep();\n    paintBox.stroke.prep();\n  };\n\n  const flyoutFuncs = {};\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const setFlyoutTitles = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      if (shower.data('isLibrary')) {\n        return;\n      }\n\n      const tooltips = $(this).children().map(function () {\n        return this.title;\n      }).get();\n      shower[0].title = tooltips.join(' / ');\n    });\n  };\n\n  const allHolders = {};\n  /**\n   * @param {PlainObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector\n   * @returns {undefined}\n   */\n  const setupFlyouts = function (holders) {\n    $.each(holders, function (holdSel, btnOpts) {\n      if (!allHolders[holdSel]) {\n        allHolders[holdSel] = [];\n      }\n      allHolders[holdSel].push(...btnOpts);\n\n      const buttons = $(holdSel).children().not('.tool_button_evt_handled');\n      const showSel = holdSel + '_show';\n      const shower = $(showSel);\n      let def = false;\n      buttons.addClass('tool_button tool_button_evt_handled')\n        .unbind('click mousedown mouseup') // may not be necessary\n        .each(function () {\n          // Get this button's options\n          const idSel = '#' + this.getAttribute('id');\n          const [i, opts] = Object.entries(btnOpts).find(([_, {sel}]) => {\n            return sel === idSel;\n          });\n\n          // Remember the function that goes with this ID\n          flyoutFuncs[opts.sel] = opts.fn;\n\n          if (opts.isDefault) { def = i; }\n\n          /**\n           * Clicking the icon in flyout should set this set's icon.\n           * @param {Event} ev\n           * @returns {undefined}\n           */\n          const flyoutAction = function (ev) {\n            let options = opts;\n            // Find the currently selected tool if comes from keystroke\n            if (ev.type === 'keydown') {\n              const flyoutIsSelected = $(options.parent + '_show').hasClass('tool_button_current');\n              const currentOperation = $(options.parent + '_show').attr('data-curopt');\n              Object.entries(holders[opts.parent]).some(([j, tool]) => {\n                if (tool.sel !== currentOperation) {\n                  return false;\n                }\n                if (!ev.shiftKey || !flyoutIsSelected) {\n                  options = tool;\n                } else {\n                  // If flyout is selected, allow shift key to iterate through subitems\n                  j = parseInt(j);\n                  // Use `allHolders` to include both extension `includeWith` and toolbarButtons\n                  options = allHolders[opts.parent][j + 1] ||\n                    holders[opts.parent][0];\n                }\n                return true;\n              });\n            }\n            if ($(this).hasClass('disabled')) { return false; }\n            if (toolButtonClick(showSel)) {\n              options.fn();\n            }\n            let icon;\n            if (options.icon) {\n              icon = $.getSvgIcon(options.icon, true);\n            } else {\n              icon = $(options.sel).children().eq(0).clone();\n            }\n\n            icon[0].setAttribute('width', shower.width());\n            icon[0].setAttribute('height', shower.height());\n            shower.children(':not(.flyout_arrow_horiz)').remove();\n            shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode\n            return true;\n          };\n\n          $(this).mouseup(flyoutAction);\n\n          if (opts.key) {\n            $(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);\n          }\n          return true;\n        });\n\n      if (def) {\n        shower.attr('data-curopt', btnOpts[def].sel);\n      } else if (!shower.attr('data-curopt')) {\n        // Set first as default\n        shower.attr('data-curopt', btnOpts[0].sel);\n      }\n\n      let timer;\n      const pos = $(showSel).position();\n\n      // Clicking the \"show\" icon should set the current mode\n      shower.mousedown(function (evt) {\n        if (shower.hasClass('disabled')) {\n          return false;\n        }\n        const holder = $(holdSel);\n        const l = pos.left + 34;\n        const w = holder.width() * -1;\n        const time = holder.data('shown_popop') ? 200 : 0;\n        timer = setTimeout(function () {\n          // Show corresponding menu\n          if (!shower.data('isLibrary')) {\n            holder.css('left', w).show().animate({\n              left: l\n            }, 150);\n          } else {\n            holder.css('left', l).show();\n          }\n          holder.data('shown_popop', true);\n        }, time);\n        evt.preventDefault();\n        return true;\n      }).mouseup(function (evt) {\n        clearTimeout(timer);\n        const opt = $(this).attr('data-curopt');\n        // Is library and popped up, so do nothing\n        if (shower.data('isLibrary') && $(showSel.replace('_show', '')).is(':visible')) {\n          toolButtonClick(showSel, true);\n          return;\n        }\n        if (toolButtonClick(showSel) && flyoutFuncs[opt]) {\n          flyoutFuncs[opt]();\n        }\n      });\n      // $('#tools_rect').mouseleave(function () { $('#tools_rect').fadeOut(); });\n    });\n    setFlyoutTitles();\n    setFlyoutPositions();\n  };\n\n  /**\n  * @param {string} id\n  * @param {external:jQuery} child\n  * @returns {undefined}\n  */\n  const makeFlyoutHolder = function (id, child) {\n    const div = $('<div>', {\n      class: 'tools_flyout',\n      id\n    }).appendTo('#svg_editor').append(child);\n\n    return div;\n  };\n\n  /**\n  * @param {string} elemSel\n  * @param {string} listSel\n  * @param {external:jQuery.Function} callback\n  * @param {PlainObject} opts\n  * @param {boolean} opts.dropUp\n  * @param {boolean} opts.seticon\n  * @param {boolean} opts.multiclick\n  * @todo Combine this with `addDropDown` or find other way to optimize.\n  * @returns {undefined}\n  */\n  const addAltDropDown = function (elemSel, listSel, callback, opts) {\n    const button = $(elemSel);\n    const {dropUp} = opts;\n    const list = $(listSel);\n    if (dropUp) {\n      $(elemSel).addClass('dropup');\n    }\n    list.find('li').bind('mouseup', function (...args) {\n      if (opts.seticon) {\n        setIcon('#cur_' + button[0].id, $(this).children());\n        $(this).addClass('current').siblings().removeClass('current');\n      }\n      callback.apply(this, ...args);\n    });\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      onButton = false;\n    });\n\n    // const height = list.height(); // Currently unused\n    button.bind('mousedown', function () {\n      const off = button.offset();\n      if (dropUp) {\n        off.top -= list.height();\n        off.left += 8;\n      } else {\n        off.top += button.height();\n      }\n      list.offset(off);\n\n      if (!button.hasClass('down')) {\n        list.show();\n        onButton = true;\n      } else {\n        // CSS position must be reset for Webkit\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    if (opts.multiclick) {\n      list.mousedown(function () {\n        onButton = true;\n      });\n    }\n  };\n\n  const extsPreLang = [];\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext\n   * @listens module:svgcanvas.SvgCanvas#event:extension_added\n   * @returns {Promise|undefined} Resolves to `undefined`\n   */\n  const extAdded = async function (win, ext) {\n    if (!ext) {\n      return undefined;\n    }\n    let cbCalled = false;\n    let resizeDone = false;\n\n    if (ext.langReady) {\n      if (editor.langChanged) { // We check for this since the \"lang\" pref could have been set by storage\n        const lang = $.pref('lang');\n        await ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n        loadedExtensionNames.push(ext.name);\n      } else {\n        extsPreLang.push(ext);\n      }\n    }\n\n    /**\n     * Clear resize timer if present and if not previously performed,\n     *   perform an icon resize.\n     * @returns {undefined}\n     */\n    function prepResize () {\n      if (resizeTimer) {\n        clearTimeout(resizeTimer);\n        resizeTimer = null;\n      }\n      if (!resizeDone) {\n        resizeTimer = setTimeout(function () {\n          resizeDone = true;\n          setIconSize($.pref('iconsize'));\n        }, 50);\n      }\n    }\n\n    /**\n    *\n    * @returns {undefined}\n    */\n    const runCallback = function () {\n      if (ext.callback && !cbCalled) {\n        cbCalled = true;\n        ext.callback.call(editor);\n      }\n    };\n\n    const btnSelects = [];\n\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ContextTool\n    * @property {string} panel The ID of the existing panel to which the tool is being added. Required.\n    * @property {string} id The ID of the actual tool element. Required.\n    * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"change\", external:jQuery.Function>} events DOM event names keyed to associated functions. Example: `{change () { alert('Option was changed') } }`. \"change\" event is one specifically handled for the \"button-select\" type. Required.\n    * @property {string} title The tooltip text that will appear when the user hovers over the tool. Required.\n    * @property {\"tool_button\"|\"select\"|\"button-select\"|\"input\"|string} type The type of tool being added. Expected.\n    * @property {PlainObject.<string, string>} [options] List of options and their labels for select tools. Example: `{1: 'One', 2: 'Two', all: 'All' }`. Required by \"select\" tools.\n    * @property {string} [container_id] The ID to be given to the tool's container element.\n    * @property {string} [defval] Default value\n    * @property {string|Integer} [colnum] Added as part of the option list class.\n    * @property {string} [label] Label associated with the tool, visible in the UI\n    * @property {Integer} [size] Value of the \"size\" attribute of the tool input\n    * @property {module:jQuerySpinButton.SpinButtonConfig} [spindata] When added to a tool of type \"input\", this tool becomes a \"spinner\" which allows the number to be in/decreased.\n    */\n    if (ext.context_tools) {\n      $.each(ext.context_tools, function (i, tool) {\n        // Add select tool\n        const contId = tool.container_id ? (' id=\"' + tool.container_id + '\"') : '';\n\n        let panel = $('#' + tool.panel);\n        // create the panel if it doesn't exist\n        if (!panel.length) {\n          panel = $('<div>', {id: tool.panel}).appendTo('#tools_top');\n        }\n\n        let html;\n        // TODO: Allow support for other types, or adding to existing tool\n        switch (tool.type) {\n        case 'tool_button': {\n          html = '<div class=\"tool_button\">' + tool.id + '</div>';\n          const div = $(html).appendTo(panel);\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              $(div).bind(evt, func);\n            });\n          }\n          break;\n        } case 'select': {\n          html = '<label' + contId + '>' +\n            '<select id=\"' + tool.id + '\">';\n          $.each(tool.options, function (val, text) {\n            const sel = (val === tool.defval) ? ' selected' : '';\n            html += '<option value=\"' + val + '\"' + sel + '>' + text + '</option>';\n          });\n          html += '</select></label>';\n          // Creates the tool, hides & adds it, returns the select element\n          const sel = $(html).appendTo(panel).find('select');\n\n          $.each(tool.events, function (evt, func) {\n            $(sel).bind(evt, func);\n          });\n          break;\n        } case 'button-select': {\n          html = '<div id=\"' + tool.id + '\" class=\"dropdown toolset\" title=\"' + tool.title + '\">' +\n            '<div id=\"cur_' + tool.id + '\" class=\"icon_label\"></div><button></button></div>';\n\n          const list = $('<ul id=\"' + tool.id + '_opts\"></ul>').appendTo('#option_lists');\n\n          if (tool.colnum) {\n            list.addClass('optcols' + tool.colnum);\n          }\n\n          // Creates the tool, hides & adds it, returns the select element\n          /* const dropdown = */ $(html).appendTo(panel).children();\n\n          btnSelects.push({\n            elem: ('#' + tool.id),\n            list: ('#' + tool.id + '_opts'),\n            title: tool.title,\n            callback: tool.events.change,\n            cur: ('#cur_' + tool.id)\n          });\n\n          break;\n        } case 'input': {\n          html = '<label' + contId + '>' +\n            '<span id=\"' + tool.id + '_label\">' +\n            tool.label + ':</span>' +\n            '<input id=\"' + tool.id + '\" title=\"' + tool.title +\n            '\" size=\"' + (tool.size || '4') +\n            '\" value=\"' + (tool.defval || '') + '\" type=\"text\"/></label>';\n\n          // Creates the tool, hides & adds it, returns the select element\n\n          // Add to given tool.panel\n          const inp = $(html).appendTo(panel).find('input');\n\n          if (tool.spindata) {\n            inp.SpinButton(tool.spindata);\n          }\n\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              inp.bind(evt, func);\n            });\n          }\n          break;\n        } default:\n          break;\n        }\n      });\n    }\n\n    const {svgicons} = ext;\n    if (ext.buttons) {\n      const fallbackObj = {},\n        placementObj = {},\n        holders = {};\n\n      /**\n      * @typedef {GenericArray} module:SVGEditor.KeyArray\n      * @property {string} 0 The key to bind (on `keydown`)\n      * @property {boolean} 1 Whether to `preventDefault` on the `keydown` event\n      * @property {boolean} 2 Not apparently in use (NoDisableInInput)\n      */\n      /**\n       * @typedef {string|module:SVGEditor.KeyArray} module:SVGEditor.Key\n       */\n      /**\n      * @typedef {PlainObject} module:SVGEditor.Button\n      * @property {string} id A unique identifier for this button. If SVG icons are used, this must match the ID used in the icon file. Required.\n      * @property {\"mode_flyout\"|\"mode\"|\"context\"|\"app_menu\"} type Type of button. Required.\n      * @property {string} title The tooltip text that will appear when the user hovers over the icon. Required.\n      * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"click\", external:jQuery.Function>} events DOM event names with associated functions. Example: `{click () { alert('Button was clicked') } }`. Click is used with `includeWith` and `type` of \"mode_flyout\" (and \"mode\"); any events may be added if `list` is not present. Expected.\n      * @property {string} panel The ID of the context panel to be included, if type is \"context\". Required only if type is \"context\".\n      * @property {string} icon The file path to the raster version of the icon image source. Required only if no `svgicons` is supplied from [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse}.\n      * @property {string} [svgicon] If absent, will utilize the button \"id\"; used to set \"placement\" on the `svgIcons` call\n      * @property {string} [list] Points to the \"id\" of a `context_tools` item of type \"button-select\" into which the button will be added as a panel list item\n      * @property {Integer} [position] The numeric index for placement; defaults to last position (as of the time of extension addition) if not present. For use with {@link http://api.jquery.com/eq/}.\n      * @property {boolean} [isDefault] Whether or not the button is the default. Used with `list`.\n      * @property {PlainObject} [includeWith] Object with flyout menu data\n      * @property {boolean} [includeWith.isDefault] Indicates whether button is default in flyout list or not.\n      * @property {string} includeWith.button jQuery selector of the existing button to be joined. Example: '#tool_line'. Required if `includeWith` is used.\n      * @property {\"last\"|Integer} [includeWith.position] Position of icon in flyout list; will be added to end if not indicated. Integer is for use with {@link http://api.jquery.com/eq/}.\n      * @property {module:SVGEditor.Key} [key] The key to bind to the button\n      */\n      // Add buttons given by extension\n      $.each(ext.buttons, function (i, /** @type {module:SVGEditor.Button} */ btn) {\n        let {id} = btn;\n        let num = i;\n        // Give button a unique ID\n        while ($('#' + id).length) {\n          id = btn.id + '_' + (++num);\n        }\n\n        let icon;\n        if (!svgicons) {\n          icon = $('<img src=\"' + btn.icon + '\">');\n        } else {\n          fallbackObj[id] = btn.icon;\n          const svgicon = btn.svgicon || btn.id;\n          if (btn.type === 'app_menu') {\n            placementObj['#' + id + ' > div'] = svgicon;\n          } else {\n            placementObj['#' + id] = svgicon;\n          }\n        }\n\n        let cls, parent;\n\n        // Set button up according to its type\n        switch (btn.type) {\n        case 'mode_flyout':\n        case 'mode':\n          cls = 'tool_button';\n          parent = '#tools_left';\n          break;\n        case 'context':\n          cls = 'tool_button';\n          parent = '#' + btn.panel;\n          // create the panel if it doesn't exist\n          if (!$(parent).length) {\n            $('<div>', {id: btn.panel}).appendTo('#tools_top');\n          }\n          break;\n        case 'app_menu':\n          cls = '';\n          parent = '#main_menu ul';\n          break;\n        }\n        let flyoutHolder, showBtn, refData, refBtn;\n        const button = $((btn.list || btn.type === 'app_menu') ? '<li/>' : '<div/>')\n          .attr('id', id)\n          .attr('title', btn.title)\n          .addClass(cls);\n        if (!btn.includeWith && !btn.list) {\n          if ('position' in btn) {\n            if ($(parent).children().eq(btn.position).length) {\n              $(parent).children().eq(btn.position).before(button);\n            } else {\n              $(parent).children().last().before(button);\n            }\n          } else {\n            button.appendTo(parent);\n          }\n\n          if (btn.type === 'mode_flyout') {\n          // Add to flyout menu / make flyout menu\n            // const opts = btn.includeWith;\n            // // opts.button, default, position\n            refBtn = $(button);\n\n            flyoutHolder = refBtn.parent();\n            // Create a flyout menu if there isn't one already\n            let tlsId;\n            if (!refBtn.parent().hasClass('tools_flyout')) {\n              // Create flyout placeholder\n              tlsId = refBtn[0].id.replace('tool_', 'tools_');\n              showBtn = refBtn.clone()\n                .attr('id', tlsId + '_show')\n                .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n              refBtn.before(showBtn);\n\n              // Create a flyout div\n              flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n              flyoutHolder.data('isLibrary', true);\n              showBtn.data('isLibrary', true);\n            }\n            // refData = Actions.getButtonData(opts.button);\n\n            placementObj['#' + tlsId + '_show'] = btn.id;\n            // TODO: Find way to set the current icon using the iconloader if this is not default\n\n            // Include data for extension button as well as ref button\n            /* curH = */ holders['#' + flyoutHolder[0].id] = [{\n              sel: '#' + id,\n              fn: btn.events.click,\n              icon: btn.id,\n              // key: btn.key,\n              isDefault: true\n            }]; // , refData\n            //\n            // // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n            //\n            // const pos = ('position' in opts)?opts.position:'last';\n            // const len = flyoutHolder.children().length;\n            //\n            // // Add at given position or end\n            // if (!isNaN(pos) && pos >= 0 && pos < len) {\n            //   flyoutHolder.children().eq(pos).before(button);\n            // } else {\n            //   flyoutHolder.append(button);\n            //   curH.reverse();\n            // }\n          } else if (btn.type === 'app_menu') {\n            button.append('<div>').append(btn.title);\n          }\n        } else if (btn.list) {\n          // Add button to list\n          button.addClass('push_button');\n          $('#' + btn.list + '_opts').append(button);\n          if (btn.isDefault) {\n            $('#cur_' + btn.list).append(button.children().clone());\n            const svgicon = btn.svgicon || btn.id;\n            placementObj['#cur_' + btn.list] = svgicon;\n          }\n        } else if (btn.includeWith) {\n          // Add to flyout menu / make flyout menu\n          const opts = btn.includeWith;\n          // opts.button, default, position\n          refBtn = $(opts.button);\n\n          flyoutHolder = refBtn.parent();\n          // Create a flyout menu if there isn't one already\n          let tlsId;\n          if (!refBtn.parent().hasClass('tools_flyout')) {\n            // Create flyout placeholder\n            tlsId = refBtn[0].id.replace('tool_', 'tools_');\n            showBtn = refBtn.clone()\n              .attr('id', tlsId + '_show')\n              .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n            refBtn.before(showBtn);\n            // Create a flyout div\n            flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n          }\n\n          refData = Actions.getButtonData(opts.button);\n\n          if (opts.isDefault) {\n            placementObj['#' + tlsId + '_show'] = btn.id;\n          }\n          // TODO: Find way to set the current icon using the iconloader if this is not default\n\n          // Include data for extension button as well as ref button\n          const curH = holders['#' + flyoutHolder[0].id] = [{\n            sel: '#' + id,\n            fn: btn.events.click,\n            icon: btn.id,\n            key: btn.key,\n            isDefault: Boolean(btn.includeWith && btn.includeWith.isDefault)\n          }, refData];\n\n          // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n\n          const pos = ('position' in opts) ? opts.position : 'last';\n          const len = flyoutHolder.children().length;\n\n          // Add at given position or end\n          if (!isNaN(pos) && pos >= 0 && pos < len) {\n            flyoutHolder.children().eq(pos).before(button);\n          } else {\n            flyoutHolder.append(button);\n            curH.reverse();\n          }\n        }\n\n        if (!svgicons) {\n          button.append(icon);\n        }\n\n        if (!btn.list) {\n          // Add given events to button\n          $.each(btn.events, function (name, func) {\n            if (name === 'click' && btn.type === 'mode') {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map extension click events as well\n              if (isTouch() && name === 'click') {\n                name = 'mousedown';\n              }\n              if (btn.includeWith) {\n                button.bind(name, func);\n              } else {\n                button.bind(name, function () {\n                  if (toolButtonClick(button)) {\n                    func();\n                  }\n                });\n              }\n              if (btn.key) {\n                $(document).bind('keydown', btn.key, func);\n                if (btn.title) {\n                  button.attr('title', btn.title + ' [' + btn.key + ']');\n                }\n              }\n            } else {\n              button.bind(name, func);\n            }\n          });\n        }\n\n        setupFlyouts(holders);\n      });\n\n      $.each(btnSelects, function () {\n        addAltDropDown(this.elem, this.list, this.callback, {seticon: true});\n      });\n\n      if (svgicons) {\n        return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n          $.svgIcons(svgicons, {\n            w: 24, h: 24,\n            id_match: false,\n            no_img: (!isWebkit()),\n            fallback: fallbackObj,\n            placement: placementObj,\n            callback (icons) {\n              // Non-ideal hack to make the icon match the current size\n              // if (curPrefs.iconsize && curPrefs.iconsize !== 'm') {\n              if ($.pref('iconsize') !== 'm') {\n                prepResize();\n              }\n              runCallback();\n              resolve();\n            }\n          });\n        });\n      }\n    }\n    return runCallback();\n  };\n\n  /**\n  * @param {string} color\n  * @param {Float} opac\n  * @param {string} type\n  * @returns {module:jGraduate~Paint}\n  */\n  const getPaint = function (color, opac, type) {\n    // update the editor's fill paint\n    const opts = {alpha: opac};\n    if (color.startsWith('url(#')) {\n      let refElem = svgCanvas.getRefElem(color);\n      if (refElem) {\n        refElem = refElem.cloneNode(true);\n      } else {\n        refElem = $('#' + type + '_color defs *')[0];\n      }\n      opts[refElem.tagName] = refElem;\n    } else if (color.startsWith('#')) {\n      opts.solidColor = color.substr(1);\n    } else {\n      opts.solidColor = 'none';\n    }\n    return new $.jGraduate.Paint(opts);\n  };\n\n  // $('#text').focus(function () { textBeingEntered = true; });\n  // $('#text').blur(function () { textBeingEntered = false; });\n\n  // bind the selected event to our function that handles updates to the UI\n  svgCanvas.bind('selected', selectedChanged);\n  svgCanvas.bind('transition', elementTransition);\n  svgCanvas.bind('changed', elementChanged);\n  svgCanvas.bind('saved', saveHandler);\n  svgCanvas.bind('exported', exportHandler);\n  svgCanvas.bind('exportedPDF', function (win, data) {\n    if (!data.output) { // Ignore Chrome\n      return;\n    }\n    const {exportWindowName} = data;\n    if (exportWindowName) {\n      exportWindow = window.open('', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n    }\n    if (!exportWindow || exportWindow.closed) {\n      /* await */ $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n    exportWindow.location.href = data.output;\n  });\n  svgCanvas.bind('zoomed', zoomChanged);\n  svgCanvas.bind('zoomDone', zoomDone);\n  svgCanvas.bind(\n    'updateCanvas',\n    /**\n     * @param {external:Window} win\n     * @param {PlainObject} centerInfo\n     * @param {false} centerInfo.center\n     * @param {module:math.XYObject} centerInfo.newCtr\n     * @listens module:svgcanvas.SvgCanvas#event:updateCanvas\n     * @returns {undefined}\n     */\n    function (win, {center, newCtr}) {\n      updateCanvas(center, newCtr);\n    }\n  );\n  svgCanvas.bind('contextset', contextChanged);\n  svgCanvas.bind('extension_added', extAdded);\n  svgCanvas.textActions.setInputElem($('#text')[0]);\n\n  let str = '<div class=\"palette_item\" data-rgb=\"none\"></div>';\n  $.each(palette, function (i, item) {\n    str += '<div class=\"palette_item\" style=\"background-color: ' + item +\n      ';\" data-rgb=\"' + item + '\"></div>';\n  });\n  $('#palette').append(str);\n\n  // Set up editor background functionality\n  // TODO add checkerboard as \"pattern\"\n  const colorBlocks = ['#FFF', '#888', '#000']; // ,'url(data:image/gif;base64,R0lGODlhEAAQAIAAAP%2F%2F%2F9bW1iH5BAAAAAAALAAAAAAQABAAAAIfjG%2Bgq4jM3IFLJgpswNly%2FXkcBpIiVaInlLJr9FZWAQA7)'];\n  str = '';\n  $.each(colorBlocks, function () {\n    str += '<div class=\"color_block\" style=\"background-color:' + this + ';\"></div>';\n  });\n  $('#bg_blocks').append(str);\n  const blocks = $('#bg_blocks div');\n  const curBg = 'cur_background';\n  blocks.each(function () {\n    const blk = $(this);\n    blk.click(function () {\n      blocks.removeClass(curBg);\n      $(this).addClass(curBg);\n    });\n  });\n\n  setBackground($.pref('bkgd_color'), $.pref('bkgd_url'));\n\n  $('#image_save_opts input').val([$.pref('img_save')]);\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeRectRadius = function (ctl) {\n    svgCanvas.setRectRadius(ctl.value);\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeFontSize = function (ctl) {\n    svgCanvas.setFontSize(ctl.value);\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeStrokeWidth = function (ctl) {\n    let val = ctl.value;\n    if (val === 0 && selectedElement && ['line', 'polyline'].includes(selectedElement.nodeName)) {\n      val = ctl.value = 1;\n    }\n    svgCanvas.setStrokeWidth(val);\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeRotationAngle = function (ctl) {\n    svgCanvas.setRotationAngle(ctl.value);\n    $('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);\n  };\n\n  /**\n  * @param {external:jQuery.fn.SpinButton} ctl Spin Button\n  * @param {string} [val=ctl.value]\n  * @returns {undefined}\n  */\n  const changeOpacity = function (ctl, val) {\n    if (Utils.isNullish(val)) { val = ctl.value; }\n    $('#group_opacity').val(val);\n    if (!ctl || !ctl.handle) {\n      $('#opac_slider').slider('option', 'value', val);\n    }\n    svgCanvas.setOpacity(val / 100);\n  };\n\n  /**\n  * @param {external:jQuery.fn.SpinButton} ctl Spin Button\n  * @param {string} [val=ctl.value]\n  * @param {boolean} noUndo\n  * @returns {undefined}\n  */\n  const changeBlur = function (ctl, val, noUndo) {\n    if (Utils.isNullish(val)) { val = ctl.value; }\n    $('#blur').val(val);\n    let complete = false;\n    if (!ctl || !ctl.handle) {\n      $('#blur_slider').slider('option', 'value', val);\n      complete = true;\n    }\n    if (noUndo) {\n      svgCanvas.setBlurNoUndo(val);\n    } else {\n      svgCanvas.setBlur(val, complete);\n    }\n  };\n\n  $('#stroke_style').change(function () {\n    svgCanvas.setStrokeAttr('stroke-dasharray', $(this).val());\n    operaRepaint();\n  });\n\n  $('#stroke_linejoin').change(function () {\n    svgCanvas.setStrokeAttr('stroke-linejoin', $(this).val());\n    operaRepaint();\n  });\n\n  // Lose focus for select elements when changed (Allows keyboard shortcuts to work better)\n  $('select').change(function () { $(this).blur(); });\n\n  // fired when user wants to move elements to another layer\n  let promptMoveLayerOnce = false;\n  $('#selLayerNames').change(async function () {\n    const destLayer = this.options[this.selectedIndex].value;\n    const confirmStr = uiStrings.notification.QmoveElemsToLayer.replace('%s', destLayer);\n    /**\n    * @param {boolean} ok\n    * @returns {undefined}\n    */\n    const moveToLayer = function (ok) {\n      if (!ok) { return; }\n      promptMoveLayerOnce = true;\n      svgCanvas.moveSelectedToLayer(destLayer);\n      svgCanvas.clearSelection();\n      populateLayers();\n    };\n    if (destLayer) {\n      if (promptMoveLayerOnce) {\n        moveToLayer(true);\n      } else {\n        const ok = await $.confirm(confirmStr);\n        if (!ok) {\n          return;\n        }\n        moveToLayer(true);\n      }\n    }\n  });\n\n  $('#font_family').change(function () {\n    svgCanvas.setFontFamily(this.value);\n  });\n\n  $('#seg_type').change(function () {\n    svgCanvas.setSegType($(this).val());\n  });\n\n  $('#text').bind('keyup input', function () {\n    svgCanvas.setTextContent(this.value);\n  });\n\n  $('#image_url').change(function () {\n    setImageURL(this.value);\n  });\n\n  $('#link_url').change(function () {\n    if (this.value.length) {\n      svgCanvas.setLinkURL(this.value);\n    } else {\n      svgCanvas.removeHyperlink();\n    }\n  });\n\n  $('#g_title').change(function () {\n    svgCanvas.setGroupTitle(this.value);\n  });\n\n  $('.attr_changer').change(function () {\n    const attr = this.getAttribute('data-attr');\n    let val = this.value;\n    const valid = isValidUnit(attr, val, selectedElement);\n\n    if (!valid) {\n      this.value = selectedElement.getAttribute(attr);\n      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);\n      return false;\n    }\n\n    if (attr !== 'id' && attr !== 'class') {\n      if (isNaN(val)) {\n        val = svgCanvas.convertToNum(attr, val);\n      } else if (curConfig.baseUnit !== 'px') {\n        // Convert unitless value to one with given unit\n\n        const unitData = getTypeMap();\n\n        if (selectedElement[attr] || svgCanvas.getMode() === 'pathedit' || attr === 'x' || attr === 'y') {\n          val *= unitData[curConfig.baseUnit];\n        }\n      }\n    }\n\n    // if the user is changing the id, then de-select the element first\n    // change the ID, then re-select it with the new ID\n    if (attr === 'id') {\n      const elem = selectedElement;\n      svgCanvas.clearSelection();\n      elem.id = val;\n      svgCanvas.addToSelection([elem], true);\n    } else {\n      svgCanvas.changeSelectedAttribute(attr, val);\n    }\n    this.blur();\n    return true;\n  });\n\n  // Prevent selection of elements when shift-clicking\n  $('#palette').mouseover(function () {\n    const inp = $('<input type=\"hidden\">');\n    $(this).append(inp);\n    inp.focus().remove();\n  });\n\n  $('.palette_item').mousedown(function (evt) {\n    // shift key or right click for stroke\n    const picker = evt.shiftKey || evt.button === 2 ? 'stroke' : 'fill';\n    let color = $(this).data('rgb');\n    let paint;\n\n    // Webkit-based browsers returned 'initial' here for no stroke\n    if (color === 'none' || color === 'transparent' || color === 'initial') {\n      color = 'none';\n      paint = new $.jGraduate.Paint();\n    } else {\n      paint = new $.jGraduate.Paint({alpha: 100, solidColor: color.substr(1)});\n    }\n\n    paintBox[picker].setPaint(paint);\n    svgCanvas.setColor(picker, color);\n\n    if (color !== 'none' && svgCanvas.getPaintOpacity(picker) !== 1) {\n      svgCanvas.setPaintOpacity(picker, 1.0);\n    }\n    updateToolButtonState();\n  }).bind('contextmenu', function (e) { e.preventDefault(); });\n\n  $('#toggle_stroke_tools').on('click', function () {\n    $('#tools_bottom').toggleClass('expanded');\n  });\n\n  (function () {\n    const wArea = workarea[0];\n\n    let lastX = null, lastY = null,\n      panning = false, keypan = false;\n\n    $('#svgcanvas').bind('mousemove mouseup', function (evt) {\n      if (panning === false) { return true; }\n\n      wArea.scrollLeft -= (evt.clientX - lastX);\n      wArea.scrollTop -= (evt.clientY - lastY);\n\n      lastX = evt.clientX;\n      lastY = evt.clientY;\n\n      if (evt.type === 'mouseup') { panning = false; }\n      return false;\n    }).mousedown(function (evt) {\n      if (evt.button === 1 || keypan === true) {\n        panning = true;\n        lastX = evt.clientX;\n        lastY = evt.clientY;\n        return false;\n      }\n      return true;\n    });\n\n    $(window).mouseup(function () {\n      panning = false;\n    });\n\n    $(document).bind('keydown', 'space', function (evt) {\n      svgCanvas.spaceKey = keypan = true;\n      evt.preventDefault();\n    }).bind('keyup', 'space', function (evt) {\n      evt.preventDefault();\n      svgCanvas.spaceKey = keypan = false;\n    }).bind('keydown', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomOutIcon);\n      }\n    }).bind('keyup', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomInIcon);\n      }\n    });\n\n    /**\n    * @param {boolean} active\n    * @returns {undefined}\n    */\n    editor.setPanning = function (active) {\n      svgCanvas.spaceKey = keypan = active;\n    };\n  }());\n\n  (function () {\n    const button = $('#main_icon');\n    const overlay = $('#main_icon span');\n    const list = $('#main_menu');\n\n    let onButton = false;\n    let height = 0;\n    let jsHover = true;\n    let setClick = false;\n\n    /*\n    // Currently unused\n    const hideMenu = function () {\n      list.fadeOut(200);\n    };\n    */\n\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('buttondown');\n        // do not hide if it was the file input as that input needs to be visible\n        // for its change event to fire\n        if (evt.target.tagName !== 'INPUT') {\n          list.fadeOut(200);\n        } else if (!setClick) {\n          setClick = true;\n          $(evt.target).click(function () {\n            list.css('margin-left', '-9999px').show();\n          });\n        }\n      }\n      onButton = false;\n    }).mousedown(function (evt) {\n      // $('.contextMenu').hide();\n      const islib = $(evt.target).closest('div.tools_flyout, .contextMenu').length;\n      if (!islib) {\n        $('.tools_flyout:visible,.contextMenu').fadeOut(250);\n      }\n    });\n\n    overlay.bind('mousedown', function () {\n      if (!button.hasClass('buttondown')) {\n        // Margin must be reset in case it was changed before;\n        list.css('margin-left', 0).show();\n        if (!height) {\n          height = list.height();\n        }\n        // Using custom animation as slideDown has annoying 'bounce effect'\n        list.css('height', 0).animate({\n          height\n        }, 200);\n        onButton = true;\n      } else {\n        list.fadeOut(200);\n      }\n      button.toggleClass('buttondown buttonup');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    const listItems = $('#main_menu li');\n\n    // Check if JS method of hovering needs to be used (Webkit bug)\n    listItems.mouseover(function () {\n      jsHover = ($(this).css('background-color') === 'rgba(0, 0, 0, 0)');\n\n      listItems.unbind('mouseover');\n      if (jsHover) {\n        listItems.mouseover(function () {\n          this.style.backgroundColor = '#FFC';\n        }).mouseout(function () {\n          this.style.backgroundColor = 'transparent';\n          return true;\n        });\n      }\n    });\n  }());\n  // Made public for UI customization.\n  // TODO: Group UI functions into a public editor.ui interface.\n  /**\n   * See {@link http://api.jquery.com/bind/#bind-eventType-eventData-handler}\n   * @callback module:SVGEditor.DropDownCallback\n   * @param {external:jQuery.Event} ev See {@link http://api.jquery.com/Types/#Event}\n   * @listens external:jQuery.Event\n   * @returns {undefined|boolean} Calls `preventDefault()` and `stopPropagation()`\n  */\n  /**\n   * @param {Element|string} elem DOM Element or selector\n   * @param {module:SVGEditor.DropDownCallback} callback Mouseup callback\n   * @param {boolean} dropUp\n   * @returns {undefined}\n  */\n  editor.addDropDown = function (elem, callback, dropUp) {\n    if (!$(elem).length) { return; } // Quit if called on non-existent element\n    const button = $(elem).find('button');\n    const list = $(elem).find('ul').attr('id', $(elem)[0].id + '-list');\n    if (dropUp) {\n      $(elem).addClass('dropup');\n    } else {\n      // Move list to place where it can overflow container\n      $('#option_lists').append(list);\n    }\n    list.find('li').bind('mouseup', callback);\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n      }\n      onButton = false;\n    });\n\n    button.bind('mousedown', function () {\n      if (!button.hasClass('down')) {\n        if (!dropUp) {\n          const pos = $(elem).position();\n          list.css({\n            top: pos.top + 24,\n            left: pos.left - 10\n          });\n        }\n        list.show();\n        onButton = true;\n      } else {\n        list.hide();\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n  };\n\n  editor.addDropDown('#font_family_dropdown', function () {\n    $('#font_family').val($(this).text()).change();\n  });\n\n  editor.addDropDown('#opacity_dropdown', function () {\n    if ($(this).find('div').length) { return; }\n    const perc = parseInt($(this).text().split('%')[0]);\n    changeOpacity(false, perc);\n  }, true);\n\n  // For slider usage, see: http://jqueryui.com/demos/slider/\n  $('#opac_slider').slider({\n    start () {\n      $('#opacity_dropdown li:not(.special)').hide();\n    },\n    stop () {\n      $('#opacity_dropdown li').show();\n      $(window).mouseup();\n    },\n    slide (evt, ui) {\n      changeOpacity(ui);\n    }\n  });\n\n  editor.addDropDown('#blur_dropdown', $.noop);\n\n  let slideStart = false;\n  $('#blur_slider').slider({\n    max: 10,\n    step: 0.1,\n    stop (evt, ui) {\n      slideStart = false;\n      changeBlur(ui);\n      $('#blur_dropdown li').show();\n      $(window).mouseup();\n    },\n    start () {\n      slideStart = true;\n    },\n    slide (evt, ui) {\n      changeBlur(ui, null, slideStart);\n    }\n  });\n\n  editor.addDropDown('#zoom_dropdown', function () {\n    const item = $(this);\n    const val = item.data('val');\n    if (val) {\n      zoomChanged(window, val);\n    } else {\n      changeZoom({value: parseFloat(item.text())});\n    }\n  }, true);\n\n  addAltDropDown('#stroke_linecap', '#linecap_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#stroke_linejoin', '#linejoin_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#tool_position', '#position_opts', function () {\n    const letter = this.id.replace('tool_pos', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, 'page');\n  }, {multiclick: true});\n\n  /*\n\n  When a flyout icon is selected\n    (if flyout) {\n    - Change the icon\n    - Make pressing the button run its stuff\n    }\n    - Run its stuff\n\n  When its shortcut key is pressed\n    - If not current in list, do as above\n    , else:\n    - Just run its stuff\n\n  */\n\n  // Unfocus text input when workarea is mousedowned.\n  (function () {\n    let inp;\n    /**\n    *\n    * @returns {undefined}\n    */\n    const unfocus = function () {\n      $(inp).blur();\n    };\n\n    $('#svg_editor').find('button, select, input:not(#text)').focus(function () {\n      inp = this; // eslint-disable-line consistent-this\n      uiContext = 'toolbars';\n      workarea.mousedown(unfocus);\n    }).blur(function () {\n      uiContext = 'canvas';\n      workarea.unbind('mousedown', unfocus);\n      // Go back to selecting text if in textedit mode\n      if (svgCanvas.getMode() === 'textedit') {\n        $('#text').focus();\n      }\n    });\n  }());\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickFHPath = function () {\n    if (toolButtonClick('#tool_fhpath')) {\n      svgCanvas.setMode('fhpath');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickLine = function () {\n    if (toolButtonClick('#tool_line')) {\n      svgCanvas.setMode('line');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickSquare = function () {\n    if (toolButtonClick('#tool_square')) {\n      svgCanvas.setMode('square');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickRect = function () {\n    if (toolButtonClick('#tool_rect')) {\n      svgCanvas.setMode('rect');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickFHRect = function () {\n    if (toolButtonClick('#tool_fhrect')) {\n      svgCanvas.setMode('fhrect');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickCircle = function () {\n    if (toolButtonClick('#tool_circle')) {\n      svgCanvas.setMode('circle');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickEllipse = function () {\n    if (toolButtonClick('#tool_ellipse')) {\n      svgCanvas.setMode('ellipse');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickFHEllipse = function () {\n    if (toolButtonClick('#tool_fhellipse')) {\n      svgCanvas.setMode('fhellipse');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickImage = function () {\n    if (toolButtonClick('#tool_image')) {\n      svgCanvas.setMode('image');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      svgCanvas.setMode('zoom');\n      workarea.css('cursor', zoomInIcon);\n    }\n  };\n\n  /**\n  * @param {Float} multiplier\n  * @returns {undefined}\n  */\n  const zoomImage = function (multiplier) {\n    const res = svgCanvas.getResolution();\n    multiplier = multiplier ? res.zoom * multiplier : 1;\n    // setResolution(res.w * multiplier, res.h * multiplier, true);\n    $('#zoom').val(multiplier * 100);\n    svgCanvas.setZoom(multiplier);\n    zoomDone();\n    updateCanvas(true);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const dblclickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      zoomImage();\n      setSelectMode();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickText = function () {\n    if (toolButtonClick('#tool_text')) {\n      svgCanvas.setMode('text');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickPath = function () {\n    if (toolButtonClick('#tool_path')) {\n      svgCanvas.setMode('path');\n    }\n  };\n\n  /**\n  * Delete is a contextual tool that only appears in the ribbon if\n  * an element has been selected.\n  * @returns {undefined}\n  */\n  const deleteSelected = function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      svgCanvas.deleteSelectedElements();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const cutSelected = function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      svgCanvas.cutSelectedElements();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const copySelected = function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      svgCanvas.copySelectedElements();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const pasteInCenter = function () {\n    const zoom = svgCanvas.getZoom();\n    const x = (workarea[0].scrollLeft + workarea.width() / 2) / zoom - svgCanvas.contentW;\n    const y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;\n    svgCanvas.pasteElements('point', x, y);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const moveToTopSelected = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.moveToTopSelectedElement();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const moveToBottomSelected = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.moveToBottomSelectedElement();\n    }\n  };\n\n  /**\n  * @param {\"Up\"|\"Down\"} dir\n  * @returns {undefined}\n  */\n  const moveUpDownSelected = function (dir) {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.moveUpDownSelected(dir);\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const convertToPath = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.convertToPath();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const reorientPath = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      path.reorient();\n    }\n  };\n\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const makeHyperlink = async function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      const url = await $.prompt(uiStrings.notification.enterNewLinkURL, 'http://');\n      if (url) {\n        svgCanvas.makeHyperlink(url);\n      }\n    }\n  };\n\n  /**\n  * @param {Float} dx\n  * @param {Float} dy\n  * @returns {undefined}\n  */\n  const moveSelected = function (dx, dy) {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      if (curConfig.gridSnapping) {\n        // Use grid snap value regardless of zoom level\n        const multi = svgCanvas.getZoom() * curConfig.snappingStep;\n        dx *= multi;\n        dy *= multi;\n      }\n      svgCanvas.moveSelectedElements(dx, dy);\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const linkControlPoints = function () {\n    $('#tool_node_link').toggleClass('push_button_pressed tool_button');\n    const linked = $('#tool_node_link').hasClass('push_button_pressed');\n    path.linkControlPoints(linked);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clonePathNode = function () {\n    if (path.getNodePoint()) {\n      path.clonePathNode();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const deletePathNode = function () {\n    if (path.getNodePoint()) {\n      path.deletePathNode();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const addSubPath = function () {\n    const button = $('#tool_add_subpath');\n    const sp = !button.hasClass('push_button_pressed');\n    button.toggleClass('push_button_pressed tool_button');\n    path.addSubPath(sp);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const opencloseSubPath = function () {\n    path.opencloseSubPath();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const selectNext = function () {\n    svgCanvas.cycleElement(1);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const selectPrev = function () {\n    svgCanvas.cycleElement(0);\n  };\n\n  /**\n  * @param {0|1} cw\n  * @param {Integer} step\n  * @returns {undefined}\n  */\n  const rotateSelected = function (cw, step) {\n    if (Utils.isNullish(selectedElement) || multiselected) { return; }\n    if (!cw) { step *= -1; }\n    const angle = parseFloat($('#angle').val()) + step;\n    svgCanvas.setRotationAngle(angle);\n    updateContextPanel();\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n   * @returns {Promise} Resolves to `undefined`\n   */\n  const clickClear = async function () {\n    const [x, y] = curConfig.dimensions;\n    const ok = await $.confirm(uiStrings.notification.QwantToClear);\n    if (!ok) {\n      return;\n    }\n    setSelectMode();\n    svgCanvas.clear();\n    svgCanvas.setResolution(x, y);\n    updateCanvas(true);\n    zoomImage();\n    populateLayers();\n    updateContextPanel();\n    prepPaints();\n    svgCanvas.runExtensions('onNewDocument');\n  };\n\n  /**\n  *\n  * @returns {false}\n  */\n  const clickBold = function () {\n    svgCanvas.setBold(!svgCanvas.getBold());\n    updateContextPanel();\n    return false;\n  };\n\n  /**\n  *\n  * @returns {false}\n  */\n  const clickItalic = function () {\n    svgCanvas.setItalic(!svgCanvas.getItalic());\n    updateContextPanel();\n    return false;\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickSave = function () {\n    // In the future, more options can be provided here\n    const saveOpts = {\n      images: $.pref('img_save'),\n      round_digits: 6\n    };\n    svgCanvas.save(saveOpts);\n  };\n\n  let loadingURL;\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const clickExport = async function () {\n    const imgType = await $.select('Select an image type for export: ', [\n      // See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support\n      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'\n      'PNG',\n      'JPEG', 'BMP', 'WEBP', 'PDF'\n    ], function () {\n      const sel = $(this);\n      if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {\n        if (!$('#image-slider').length) {\n          $(`<div><label>${uiStrings.ui.quality}\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>`).appendTo(sel.parent());\n        }\n      } else {\n        $('#image-slider').parent().remove();\n      }\n    }); // todo: replace hard-coded msg with uiStrings.notification.\n    if (!imgType) {\n      return;\n    }\n    // Open placeholder window (prevents popup)\n    let exportWindowName;\n\n    /**\n     *\n     * @returns {undefined}\n     */\n    function openExportWindow () {\n      const {loadingImage} = uiStrings.notification;\n      if (curConfig.exportWindowType === 'new') {\n        editor.exportWindowCt++;\n      }\n      exportWindowName = curConfig.canvasName + editor.exportWindowCt;\n      let popHTML, popURL;\n      if (loadingURL) {\n        popURL = loadingURL;\n      } else {\n        popHTML = `<!DOCTYPE html><html>\n          <head>\n            <meta charset=\"utf-8\">\n            <title>${loadingImage}</title>\n          </head>\n          <body><h1>${loadingImage}</h1></body>\n        <html>`;\n        if (typeof URL !== 'undefined' && URL.createObjectURL) {\n          const blob = new Blob([popHTML], {type: 'text/html'});\n          popURL = URL.createObjectURL(blob);\n        } else {\n          popURL = 'data:text/html;base64;charset=utf-8,' + Utils.encode64(popHTML);\n        }\n        loadingURL = popURL;\n      }\n      exportWindow = window.open(popURL, exportWindowName);\n    }\n    const chrome = isChrome();\n    if (imgType === 'PDF') {\n      if (!customExportPDF && !chrome) {\n        openExportWindow();\n      }\n      svgCanvas.exportPDF(exportWindowName);\n    } else {\n      if (!customExportImage) {\n        openExportWindow();\n      }\n      const quality = parseInt($('#image-slider').val()) / 100;\n      /* const results = */ await svgCanvas.rasterExport(imgType, quality, exportWindowName);\n    }\n  };\n\n  /**\n   * By default, svgCanvas.open() is a no-op. It is up to an extension\n   *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which\n   *  will make it do something.\n   * @returns {undefined}\n   */\n  const clickOpen = function () {\n    svgCanvas.open();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickImport = function () {\n    /* */\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickUndo = function () {\n    if (undoMgr.getUndoStackSize() > 0) {\n      undoMgr.undo();\n      populateLayers();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickRedo = function () {\n    if (undoMgr.getRedoStackSize() > 0) {\n      undoMgr.redo();\n      populateLayers();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickGroup = function () {\n    // group\n    if (multiselected) {\n      svgCanvas.groupSelectedElements();\n    // ungroup\n    } else if (selectedElement) {\n      svgCanvas.ungroupSelectedElement();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickClone = function () {\n    svgCanvas.cloneSelectedElements(20, 20);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickAlign = function () {\n    const letter = this.id.replace('tool_align', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickWireframe = function () {\n    $('#tool_wireframe').toggleClass('push_button_pressed tool_button');\n    workarea.toggleClass('wireframe');\n\n    if (supportsNonSS) { return; }\n    const wfRules = $('#wireframe_rules');\n    if (!wfRules.length) {\n      /* wfRules = */ $('<style id=\"wireframe_rules\"></style>').appendTo('head');\n    } else {\n      wfRules.empty();\n    }\n\n    updateWireFrame();\n  };\n\n  $('#svg_docprops_container, #svg_prefs_container').draggable({\n    cancel: 'button,fieldset',\n    containment: 'window'\n  }).css('position', 'absolute');\n\n  let docprops = false;\n  let preferences = false;\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const showDocProperties = function () {\n    if (docprops) { return; }\n    docprops = true;\n\n    // This selects the correct radio button by using the array notation\n    $('#image_save_opts input').val([$.pref('img_save')]);\n\n    // update resolution option with actual resolution\n    const res = svgCanvas.getResolution();\n    if (curConfig.baseUnit !== 'px') {\n      res.w = convertUnit(res.w) + curConfig.baseUnit;\n      res.h = convertUnit(res.h) + curConfig.baseUnit;\n    }\n\n    $('#canvas_width').val(res.w);\n    $('#canvas_height').val(res.h);\n    $('#canvas_title').val(svgCanvas.getDocumentTitle());\n\n    $('#svg_docprops').show();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const showPreferences = function () {\n    if (preferences) { return; }\n    preferences = true;\n    $('#main_menu').hide();\n\n    // Update background color with current one\n    const canvasBg = curPrefs.bkgd_color;\n    const url = $.pref('bkgd_url');\n    blocks.each(function () {\n      const blk = $(this);\n      const isBg = blk.css('background-color') === canvasBg;\n      blk.toggleClass(curBg, isBg);\n      if (isBg) { $('#canvas_bg_url').removeClass(curBg); }\n    });\n    if (!canvasBg) { blocks.eq(0).addClass(curBg); }\n    if (url) {\n      $('#canvas_bg_url').val(url);\n    }\n    $('#grid_snapping_on').prop('checked', curConfig.gridSnapping);\n    $('#grid_snapping_step').attr('value', curConfig.snappingStep);\n    $('#grid_color').attr('value', curConfig.gridColor);\n\n    $('#svg_prefs').show();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const hideSourceEditor = function () {\n    $('#svg_source_editor').hide();\n    editingsource = false;\n    $('#svg_source_textarea').blur();\n  };\n\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const saveSourceEditor = async function () {\n    if (!editingsource) { return; }\n\n    const saveChanges = function () {\n      svgCanvas.clearSelection();\n      hideSourceEditor();\n      zoomImage();\n      populateLayers();\n      updateTitle();\n      prepPaints();\n    };\n\n    if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {\n      const ok = await $.confirm(uiStrings.notification.QerrorsRevertToSource);\n      if (!ok) {\n        return;\n      }\n      saveChanges();\n      return;\n    }\n    saveChanges();\n    setSelectMode();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const hideDocProperties = function () {\n    $('#svg_docprops').hide();\n    $('#canvas_width,#canvas_height').removeAttr('disabled');\n    $('#resolution')[0].selectedIndex = 0;\n    $('#image_save_opts input').val([$.pref('img_save')]);\n    docprops = false;\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const hidePreferences = function () {\n    $('#svg_prefs').hide();\n    preferences = false;\n  };\n\n  /**\n  *\n  * @returns {boolean} Whether there were problems saving the document properties\n  */\n  const saveDocProperties = function () {\n    // set title\n    const newTitle = $('#canvas_title').val();\n    updateTitle(newTitle);\n    svgCanvas.setDocumentTitle(newTitle);\n\n    // update resolution\n    const width = $('#canvas_width'), w = width.val();\n    const height = $('#canvas_height'), h = height.val();\n\n    if (w !== 'fit' && !isValidUnit('width', w)) {\n      width.parent().addClass('error');\n      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);\n      return false;\n    }\n\n    width.parent().removeClass('error');\n\n    if (h !== 'fit' && !isValidUnit('height', h)) {\n      height.parent().addClass('error');\n      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);\n      return false;\n    }\n\n    height.parent().removeClass('error');\n\n    if (!svgCanvas.setResolution(w, h)) {\n      /* await */ $.alert(uiStrings.notification.noContentToFitTo);\n      return false;\n    }\n\n    // Set image save option\n    $.pref('img_save', $('#image_save_opts :checked').val());\n    updateCanvas();\n    hideDocProperties();\n    return true;\n  };\n\n  /**\n  * Save user preferences based on current values in the UI.\n  * @function module:SVGEditor.savePreferences\n  * @returns {undefined}\n  */\n  const savePreferences = editor.savePreferences = async function () {\n    // Set background\n    const color = $('#bg_blocks div.cur_background').css('background-color') || '#FFF';\n    setBackground(color, $('#canvas_bg_url').val());\n\n    // set language\n    const lang = $('#lang_select').val();\n    if (lang !== $.pref('lang')) {\n      const {langParam, langData} = await editor.putLocale(lang, goodLangs, curConfig);\n      await setLang(langParam, langData);\n    }\n\n    // set icon size\n    setIconSize($('#iconsize').val());\n\n    // set grid setting\n    curConfig.gridSnapping = $('#grid_snapping_on')[0].checked;\n    curConfig.snappingStep = $('#grid_snapping_step').val();\n    curConfig.gridColor = $('#grid_color').val();\n    curConfig.showRulers = $('#show_rulers')[0].checked;\n\n    $('#rulers').toggle(curConfig.showRulers);\n    if (curConfig.showRulers) { updateRulers(); }\n    curConfig.baseUnit = $('#base_unit').val();\n\n    svgCanvas.setConfig(curConfig);\n\n    updateCanvas();\n    hidePreferences();\n  };\n\n  let resetScrollPos = $.noop;\n\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const cancelOverlays = async function () {\n    $('#dialog_box').hide();\n    if (!editingsource && !docprops && !preferences) {\n      if (curContext) {\n        svgCanvas.leaveContext();\n      }\n      return;\n    }\n\n    if (editingsource) {\n      if (origSource !== $('#svg_source_textarea').val()) {\n        const ok = await $.confirm(uiStrings.notification.QignoreSourceChanges);\n        if (ok) {\n          hideSourceEditor();\n        }\n      } else {\n        hideSourceEditor();\n      }\n    } else if (docprops) {\n      hideDocProperties();\n    } else if (preferences) {\n      hidePreferences();\n    }\n    resetScrollPos();\n  };\n\n  const winWh = {width: $(window).width(), height: $(window).height()};\n\n  // Fix for Issue 781: Drawing area jumps to top-left corner on window resize (IE9)\n  if (isIE()) {\n    resetScrollPos = function () {\n      if (workarea[0].scrollLeft === 0 && workarea[0].scrollTop === 0) {\n        workarea[0].scrollLeft = curScrollPos.left;\n        workarea[0].scrollTop = curScrollPos.top;\n      }\n    };\n\n    curScrollPos = {\n      left: workarea[0].scrollLeft,\n      top: workarea[0].scrollTop\n    };\n\n    $(window).resize(resetScrollPos);\n    editor.ready(function () {\n      // TODO: Find better way to detect when to do this to minimize\n      // flickering effect\n      return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n        setTimeout(function () {\n          resetScrollPos();\n          resolve();\n        }, 500);\n      });\n    });\n\n    workarea.scroll(function () {\n      curScrollPos = {\n        left: workarea[0].scrollLeft,\n        top: workarea[0].scrollTop\n      };\n    });\n  }\n\n  $(window).resize(function (evt) {\n    $.each(winWh, function (type, val) {\n      const curval = $(window)[type]();\n      workarea[0]['scroll' + (type === 'width' ? 'Left' : 'Top')] -= (curval - val) / 2;\n      winWh[type] = curval;\n    });\n    setFlyoutPositions();\n  });\n\n  workarea.scroll(function () {\n    // TODO: jQuery's scrollLeft/Top() wouldn't require a null check\n    if ($('#ruler_x').length) {\n      $('#ruler_x')[0].scrollLeft = workarea[0].scrollLeft;\n    }\n    if ($('#ruler_y').length) {\n      $('#ruler_y')[0].scrollTop = workarea[0].scrollTop;\n    }\n  });\n\n  $('#url_notice').click(function () {\n    /* await */ $.alert(this.title);\n  });\n\n  $('#change_image_url').click(promptImgURL);\n\n  // added these event handlers for all the push buttons so they\n  // behave more like buttons being pressed-in and not images\n  (function () {\n    const toolnames = ['clear', 'open', 'save', 'source', 'delete', 'delete_multi', 'paste', 'clone', 'clone_multi', 'move_top', 'move_bottom'];\n    const curClass = 'tool_button_current';\n\n    let allTools = '';\n\n    $.each(toolnames, function (i, item) {\n      allTools += (i ? ',' : '') + '#tool_' + item;\n    });\n\n    $(allTools).mousedown(function () {\n      $(this).addClass(curClass);\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n\n    $('#tool_undo, #tool_redo').mousedown(function () {\n      if (!$(this).hasClass('disabled')) { $(this).addClass(curClass); }\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n  }());\n\n  // switch modifier key in tooltips if mac\n  // NOTE: This code is not used yet until I can figure out how to successfully bind ctrl/meta\n  // in Opera and Chrome\n  if (isMac() && !window.opera) {\n    const shortcutButtons = [\n      'tool_clear', 'tool_save', 'tool_source',\n      'tool_undo', 'tool_redo', 'tool_clone'\n    ];\n    let i = shortcutButtons.length;\n    while (i--) {\n      const button = document.getElementById(shortcutButtons[i]);\n      if (button) {\n        const {title} = button;\n        const index = title.indexOf('Ctrl+');\n        button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');\n      }\n    }\n  }\n\n  /**\n  * @param {external:jQuery} elem\n  * @todo Go back to the color boxes having white background-color and then setting\n  *  background-image to none.png (otherwise partially transparent gradients look weird)\n  * @returns {undefined}\n  */\n  const colorPicker = function (elem) {\n    const picker = elem.attr('id') === 'stroke_color' ? 'stroke' : 'fill';\n    // const opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));\n    const title = picker === 'stroke'\n      ? uiStrings.ui.pick_stroke_paint_opacity\n      : uiStrings.ui.pick_fill_paint_opacity;\n    // let wasNone = false; // Currently unused\n    const pos = elem.offset();\n    let {paint} = paintBox[picker];\n    $('#color_picker')\n      .draggable({\n        cancel: '.jGraduate_tabs, .jGraduate_colPick, .jGraduate_gradPick, .jPicker',\n        containment: 'window'\n      })\n      .css(curConfig.colorPickerCSS || {left: pos.left - 140, bottom: 40})\n      .jGraduate(\n        {\n          paint,\n          window: {pickerTitle: title},\n          images: {clientPath: curConfig.jGraduatePath},\n          newstop: 'inverse'\n        },\n        function (p) {\n          paint = new $.jGraduate.Paint(p);\n          paintBox[picker].setPaint(paint);\n          svgCanvas.setPaint(picker, paint);\n          $('#color_picker').hide();\n        },\n        function () {\n          $('#color_picker').hide();\n        }\n      );\n  };\n\n  class PaintBox {\n    constructor (container, type) {\n      const cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke'];\n      // set up gradients to be used for the buttons\n      const svgdocbox = new DOMParser().parseFromString(\n        `<svg xmlns=\"http://www.w3.org/2000/svg\">\n          <rect width=\"16.5\" height=\"16.5\"\n            fill=\"#${cur.color}\" opacity=\"${cur.opacity}\"/>\n          <defs><linearGradient id=\"gradbox_\"/></defs>\n        </svg>`,\n        'text/xml'\n      );\n\n      let docElem = svgdocbox.documentElement;\n      docElem = $(container)[0].appendChild(document.importNode(docElem, true));\n      docElem.setAttribute('width', 16.5);\n\n      this.rect = docElem.firstElementChild;\n      this.defs = docElem.getElementsByTagName('defs')[0];\n      this.grad = this.defs.firstElementChild;\n      this.paint = new $.jGraduate.Paint({solidColor: cur.color});\n      this.type = type;\n    }\n    setPaint (paint, apply) {\n      this.paint = paint;\n\n      const ptype = paint.type;\n      const opac = paint.alpha / 100;\n\n      let fillAttr = 'none';\n      switch (ptype) {\n      case 'solidColor':\n        fillAttr = (paint[ptype] !== 'none') ? '#' + paint[ptype] : paint[ptype];\n        break;\n      case 'linearGradient':\n      case 'radialGradient': {\n        this.grad.remove();\n        this.grad = this.defs.appendChild(paint[ptype]);\n        const id = this.grad.id = 'gradbox_' + this.type;\n        fillAttr = 'url(#' + id + ')';\n        break;\n      }\n      }\n\n      this.rect.setAttribute('fill', fillAttr);\n      this.rect.setAttribute('opacity', opac);\n\n      if (apply) {\n        svgCanvas.setColor(this.type, this._paintColor, true);\n        svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);\n      }\n    }\n\n    update (apply) {\n      if (!selectedElement) { return; }\n\n      const {type} = this;\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        // These elements don't have fill or stroke, so don't change\n        // the current value\n        return;\n      case 'g':\n      case 'a': {\n        const childs = selectedElement.getElementsByTagName('*');\n\n        let gPaint = null;\n        for (let i = 0, len = childs.length; i < len; i++) {\n          const elem = childs[i];\n          const p = elem.getAttribute(type);\n          if (i === 0) {\n            gPaint = p;\n          } else if (gPaint !== p) {\n            gPaint = null;\n            break;\n          }\n        }\n\n        if (gPaint === null) {\n          // No common color, don't update anything\n          this._paintColor = null;\n          return;\n        }\n        this._paintColor = gPaint;\n        this._paintOpacity = 1;\n        break;\n      } default: {\n        this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));\n        if (isNaN(this._paintOpacity)) {\n          this._paintOpacity = 1.0;\n        }\n\n        const defColor = type === 'fill' ? 'black' : 'none';\n        this._paintColor = selectedElement.getAttribute(type) || defColor;\n      }\n      }\n\n      if (apply) {\n        svgCanvas.setColor(type, this._paintColor, true);\n        svgCanvas.setPaintOpacity(type, this._paintOpacity, true);\n      }\n\n      this._paintOpacity *= 100;\n\n      const paint = getPaint(this._paintColor, this._paintOpacity, type);\n      // update the rect inside #fill_color/#stroke_color\n      this.setPaint(paint);\n    }\n\n    prep () {\n      const ptype = this.paint.type;\n\n      switch (ptype) {\n      case 'linearGradient':\n      case 'radialGradient': {\n        const paint = new $.jGraduate.Paint({copy: this.paint});\n        svgCanvas.setPaint(this.type, paint);\n        break;\n      }\n      }\n    }\n  }\n\n  paintBox.fill = new PaintBox('#fill_color', 'fill');\n  paintBox.stroke = new PaintBox('#stroke_color', 'stroke');\n\n  $('#stroke_width').val(curConfig.initStroke.width);\n  $('#group_opacity').val(curConfig.initOpacity * 100);\n\n  // Use this SVG elem to test vectorEffect support\n  const testEl = paintBox.fill.rect.cloneNode(false);\n  testEl.setAttribute('style', 'vector-effect:non-scaling-stroke');\n  const supportsNonSS = (testEl.style.vectorEffect === 'non-scaling-stroke');\n  testEl.removeAttribute('style');\n  const svgdocbox = paintBox.fill.rect.ownerDocument;\n  // Use this to test support for blur element. Seems to work to test support in Webkit\n  const blurTest = svgdocbox.createElementNS(NS.SVG, 'feGaussianBlur');\n  if (blurTest.stdDeviationX === undefined) {\n    $('#tool_blur').hide();\n  }\n  $(blurTest).remove();\n\n  // Test for zoom icon support\n  (function () {\n    const pre = '-' + uaPrefix.toLowerCase() + '-zoom-';\n    const zoom = pre + 'in';\n    workarea.css('cursor', zoom);\n    if (workarea.css('cursor') === zoom) {\n      zoomInIcon = zoom;\n      zoomOutIcon = pre + 'out';\n    }\n    workarea.css('cursor', 'auto');\n  }());\n\n  // Test for embedImage support (use timeout to not interfere with page load)\n  setTimeout(function () {\n    svgCanvas.embedImage('images/logo.png', function (datauri) {\n      if (!datauri) {\n        // Disable option\n        $('#image_save_opts [value=embed]').attr('disabled', 'disabled');\n        $('#image_save_opts input').val(['ref']);\n        $.pref('img_save', 'ref');\n        $('#image_opt_embed').css('color', '#666').attr(\n          'title',\n          uiStrings.notification.featNotSupported\n        );\n      }\n    });\n  }, 1000);\n\n  $('#fill_color, #tool_fill .icon_label').click(function () {\n    colorPicker($('#fill_color'));\n    updateToolButtonState();\n  });\n\n  $('#stroke_color, #tool_stroke .icon_label').click(function () {\n    colorPicker($('#stroke_color'));\n    updateToolButtonState();\n  });\n\n  $('#group_opacityLabel').click(function () {\n    $('#opacity_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#zoomLabel').click(function () {\n    $('#zoom_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#tool_move_top').mousedown(function (evt) {\n    $('#tools_stacking').show();\n    evt.preventDefault();\n  });\n\n  $('.layer_button').mousedown(function () {\n    $(this).addClass('layer_buttonpressed');\n  }).mouseout(function () {\n    $(this).removeClass('layer_buttonpressed');\n  }).mouseup(function () {\n    $(this).removeClass('layer_buttonpressed');\n  });\n\n  $('.push_button').mousedown(function () {\n    if (!$(this).hasClass('disabled')) {\n      $(this).addClass('push_button_pressed').removeClass('push_button');\n    }\n  }).mouseout(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  }).mouseup(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  });\n\n  // ask for a layer name\n  $('#layer_new').click(async function () {\n    let uniqName,\n      i = svgCanvas.getCurrentDrawing().getNumLayers();\n    do {\n      uniqName = uiStrings.layers.layer + ' ' + (++i);\n    } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));\n\n    const newName = await $.prompt(uiStrings.notification.enterUniqueLayerName, uniqName);\n    if (!newName) { return; }\n    if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n      /* await */ $.alert(uiStrings.notification.dupeLayerName);\n      return;\n    }\n    svgCanvas.createLayer(newName);\n    updateContextPanel();\n    populateLayers();\n  });\n\n  /**\n   *\n   * @returns {undefined}\n   */\n  function deleteLayer () {\n    if (svgCanvas.deleteCurrentLayer()) {\n      updateContextPanel();\n      populateLayers();\n      // This matches what SvgCanvas does\n      // TODO: make this behavior less brittle (svg-editor should get which\n      // layer is selected from the canvas and then select that one in the UI)\n      $('#layerlist tr.layer').removeClass('layersel');\n      $('#layerlist tr.layer:first').addClass('layersel');\n    }\n  }\n\n  /**\n   *\n   * @returns {undefined}\n   */\n  async function cloneLayer () {\n    const name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';\n\n    const newName = await $.prompt(uiStrings.notification.enterUniqueLayerName, name);\n    if (!newName) { return; }\n    if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n      /* await */ $.alert(uiStrings.notification.dupeLayerName);\n      return;\n    }\n    svgCanvas.cloneLayer(newName);\n    updateContextPanel();\n    populateLayers();\n  }\n\n  /**\n   *\n   * @returns {undefined}\n   */\n  function mergeLayer () {\n    if ($('#layerlist tr.layersel').index() === svgCanvas.getCurrentDrawing().getNumLayers() - 1) {\n      return;\n    }\n    svgCanvas.mergeLayer();\n    updateContextPanel();\n    populateLayers();\n  }\n\n  /**\n   * @param {Integer} pos\n   * @returns {undefined}\n   */\n  function moveLayer (pos) {\n    const total = svgCanvas.getCurrentDrawing().getNumLayers();\n\n    let curIndex = $('#layerlist tr.layersel').index();\n    if (curIndex > 0 || curIndex < total - 1) {\n      curIndex += pos;\n      svgCanvas.setCurrentLayerPosition(total - curIndex - 1);\n      populateLayers();\n    }\n  }\n\n  $('#layer_delete').click(deleteLayer);\n\n  $('#layer_up').click(() => {\n    moveLayer(-1);\n  });\n\n  $('#layer_down').click(() => {\n    moveLayer(1);\n  });\n\n  $('#layer_rename').click(async function () {\n    // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused\n    const oldName = $('#layerlist tr.layersel td.layername').text();\n    const newName = await $.prompt(uiStrings.notification.enterNewLayerName, '');\n    if (!newName) { return; }\n    if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n      /* await */ $.alert(uiStrings.notification.layerHasThatName);\n      return;\n    }\n\n    svgCanvas.renameCurrentLayer(newName);\n    populateLayers();\n  });\n\n  const SIDEPANEL_MAXWIDTH = 300;\n  const SIDEPANEL_OPENWIDTH = 150;\n  let sidedrag = -1, sidedragging = false, allowmove = false;\n\n  /**\n   * @param {Float} delta\n   * @fires module:svgcanvas.SvgCanvas#event:ext-workareaResized\n   * @returns {undefined}\n   */\n  const changeSidePanelWidth = function (delta) {\n    const rulerX = $('#ruler_x');\n    $('#sidepanels').width('+=' + delta);\n    $('#layerpanel').width('+=' + delta);\n    rulerX.css('right', parseInt(rulerX.css('right')) + delta);\n    workarea.css('right', parseInt(workarea.css('right')) + delta);\n    svgCanvas.runExtensions('workareaResized');\n  };\n\n  /**\n  * @param {Event} evt\n  * @returns {undefined}\n  */\n  const resizeSidePanel = function (evt) {\n    if (!allowmove) { return; }\n    if (sidedrag === -1) { return; }\n    sidedragging = true;\n    let deltaX = sidedrag - evt.pageX;\n    const sideWidth = $('#sidepanels').width();\n    if (sideWidth + deltaX > SIDEPANEL_MAXWIDTH) {\n      deltaX = SIDEPANEL_MAXWIDTH - sideWidth;\n      // sideWidth = SIDEPANEL_MAXWIDTH;\n    } else if (sideWidth + deltaX < 2) {\n      deltaX = 2 - sideWidth;\n      // sideWidth = 2;\n    }\n    if (deltaX === 0) { return; }\n    sidedrag -= deltaX;\n    changeSidePanelWidth(deltaX);\n  };\n\n  /**\n   * If width is non-zero, then fully close it; otherwise fully open it.\n   * @param {boolean} close Forces the side panel closed\n   * @returns {undefined}\n   */\n  const toggleSidePanel = function (close) {\n    const w = $('#sidepanels').width();\n    const deltaX = (w > 2 || close ? 2 : SIDEPANEL_OPENWIDTH) - w;\n    changeSidePanelWidth(deltaX);\n  };\n\n  $('#sidepanel_handle')\n    .mousedown(function (evt) {\n      sidedrag = evt.pageX;\n      $(window).mousemove(resizeSidePanel);\n      allowmove = false;\n      // Silly hack for Chrome, which always runs mousemove right after mousedown\n      setTimeout(function () {\n        allowmove = true;\n      }, 20);\n    })\n    .mouseup(function (evt) {\n      if (!sidedragging) { toggleSidePanel(); }\n      sidedrag = -1;\n      sidedragging = false;\n    });\n\n  $(window).mouseup(function () {\n    sidedrag = -1;\n    sidedragging = false;\n    $('#svg_editor').unbind('mousemove', resizeSidePanel);\n  });\n\n  populateLayers();\n\n  // function changeResolution (x,y) {\n  //   const {zoom} = svgCanvas.getResolution();\n  //   setResolution(x * zoom, y * zoom);\n  // }\n\n  const centerCanvas = () => {\n    // this centers the canvas vertically in the workarea (horizontal handled in CSS)\n    workarea.css('line-height', workarea.height() + 'px');\n  };\n\n  $(window).bind('load resize', centerCanvas);\n\n  /**\n   * @implements {module:jQuerySpinButton.StepCallback}\n   */\n  function stepFontSize (elem, step) {\n    const origVal = Number(elem.value);\n    const sugVal = origVal + step;\n    const increasing = sugVal >= origVal;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 24) {\n      if (increasing) {\n        return Math.round(origVal * 1.1);\n      }\n      return Math.round(origVal / 1.1);\n    }\n    if (origVal <= 1) {\n      if (increasing) {\n        return origVal * 2;\n      }\n      return origVal / 2;\n    }\n    return sugVal;\n  }\n\n  /**\n   * @implements {module:jQuerySpinButton.StepCallback}\n   */\n  function stepZoom (elem, step) {\n    const origVal = Number(elem.value);\n    if (origVal === 0) { return 100; }\n    const sugVal = origVal + step;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 100) {\n      return sugVal;\n    }\n    if (sugVal >= origVal) {\n      return origVal * 2;\n    }\n    return origVal / 2;\n  }\n\n  // function setResolution (w, h, center) {\n  //   updateCanvas();\n  //   // w -= 0; h -= 0;\n  //   // $('#svgcanvas').css({width: w, height: h});\n  //   // $('#canvas_width').val(w);\n  //   // $('#canvas_height').val(h);\n  //   //\n  //   // if (center) {\n  //   //   const wArea = workarea;\n  //   //   const scrollY = h/2 - wArea.height()/2;\n  //   //   const scrollX = w/2 - wArea.width()/2;\n  //   //   wArea[0].scrollTop = scrollY;\n  //   //   wArea[0].scrollLeft = scrollX;\n  //   // }\n  // }\n\n  $('#resolution').change(function () {\n    const wh = $('#canvas_width,#canvas_height');\n    if (!this.selectedIndex) {\n      if ($('#canvas_width').val() === 'fit') {\n        wh.removeAttr('disabled').val(100);\n      }\n    } else if (this.value === 'content') {\n      wh.val('fit').attr('disabled', 'disabled');\n    } else {\n      const dims = this.value.split('x');\n      $('#canvas_width').val(dims[0]);\n      $('#canvas_height').val(dims[1]);\n      wh.removeAttr('disabled');\n    }\n  });\n\n  // Prevent browser from erroneously repopulating fields\n  $('input,select').attr('autocomplete', 'off');\n\n  const dialogSelectors = [\n    '#tool_source_cancel', '#tool_docprops_cancel',\n    '#tool_prefs_cancel', '.overlay'\n  ];\n  /**\n   * Associate all button actions as well as non-button keyboard shortcuts\n   * @namespace {PlainObject} module:SVGEditor~Actions\n   */\n  const Actions = (function () {\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ToolButton\n    * @property {string} sel The CSS selector for the tool\n    * @property {external:jQuery.Function} fn A handler to be attached to the `evt`\n    * @property {string} evt The event for which the `fn` listener will be added\n    * @property {module:SVGEditor.Key} [key] [key, preventDefault, NoDisableInInput]\n    * @property {string} [parent] Selector\n    * @property {boolean} [hidekey] Whether to show key value in title\n    * @property {string} [icon] The button ID\n    * @property {boolean} isDefault For flyout holders\n    */\n    /**\n     *\n     * @name module:SVGEditor~ToolButtons\n     * @type {module:SVGEditor.ToolButton[]}\n     */\n    const toolButtons = [\n      {sel: '#tool_select', fn: clickSelect, evt: 'click', key: ['V', true]},\n      {sel: '#tool_fhpath', fn: clickFHPath, evt: 'click', key: ['Q', true]},\n      {sel: '#tool_line', fn: clickLine, evt: 'click', key: ['L', true],\n        parent: '#tools_line', prepend: true},\n      {sel: '#tool_rect', fn: clickRect, evt: 'mouseup',\n        key: ['R', true], parent: '#tools_rect', icon: 'rect'},\n      {sel: '#tool_square', fn: clickSquare, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'square'},\n      {sel: '#tool_fhrect', fn: clickFHRect, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'fh_rect'},\n      {sel: '#tool_ellipse', fn: clickEllipse, evt: 'mouseup',\n        key: ['E', true], parent: '#tools_ellipse', icon: 'ellipse'},\n      {sel: '#tool_circle', fn: clickCircle, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'circle'},\n      {sel: '#tool_fhellipse', fn: clickFHEllipse, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'fh_ellipse'},\n      {sel: '#tool_path', fn: clickPath, evt: 'click', key: ['P', true]},\n      {sel: '#tool_text', fn: clickText, evt: 'click', key: ['T', true]},\n      {sel: '#tool_image', fn: clickImage, evt: 'mouseup'},\n      {sel: '#tool_zoom', fn: clickZoom, evt: 'mouseup', key: ['Z', true]},\n      {sel: '#tool_clear', fn: clickClear, evt: 'mouseup', key: ['N', true]},\n      {sel: '#tool_save', fn () {\n        if (editingsource) {\n          saveSourceEditor();\n        } else {\n          clickSave();\n        }\n      }, evt: 'mouseup', key: ['S', true]},\n      {sel: '#tool_export', fn: clickExport, evt: 'mouseup'},\n      {sel: '#tool_open', fn: clickOpen, evt: 'mouseup', key: ['O', true]},\n      {sel: '#tool_import', fn: clickImport, evt: 'mouseup'},\n      {sel: '#tool_source', fn: showSourceEditor, evt: 'click', key: ['U', true]},\n      {sel: '#tool_wireframe', fn: clickWireframe, evt: 'click', key: ['F', true]},\n      {\n        key: ['esc', false, false],\n        fn () {\n          if (dialogSelectors.every((sel) => {\n            return $(sel + ':hidden').length;\n          })) {\n            svgCanvas.clearSelection();\n          }\n        },\n        hidekey: true\n      },\n      {sel: dialogSelectors.join(','), fn: cancelOverlays, evt: 'click',\n        key: ['esc', false, false], hidekey: true},\n      {sel: '#tool_source_save', fn: saveSourceEditor, evt: 'click'},\n      {sel: '#tool_docprops_save', fn: saveDocProperties, evt: 'click'},\n      {sel: '#tool_docprops', fn: showDocProperties, evt: 'mouseup'},\n      {sel: '#tool_prefs_save', fn: savePreferences, evt: 'click'},\n      {sel: '#tool_prefs_option', fn () { showPreferences(); return false; }, evt: 'mouseup'},\n      {sel: '#tool_delete,#tool_delete_multi', fn: deleteSelected,\n        evt: 'click', key: ['del/backspace', true]},\n      {sel: '#tool_reorient', fn: reorientPath, evt: 'click'},\n      {sel: '#tool_node_link', fn: linkControlPoints, evt: 'click'},\n      {sel: '#tool_node_clone', fn: clonePathNode, evt: 'click'},\n      {sel: '#tool_node_delete', fn: deletePathNode, evt: 'click'},\n      {sel: '#tool_openclose_path', fn: opencloseSubPath, evt: 'click'},\n      {sel: '#tool_add_subpath', fn: addSubPath, evt: 'click'},\n      {sel: '#tool_move_top', fn: moveToTopSelected, evt: 'click', key: 'ctrl+shift+]'},\n      {sel: '#tool_move_bottom', fn: moveToBottomSelected, evt: 'click', key: 'ctrl+shift+['},\n      {sel: '#tool_topath', fn: convertToPath, evt: 'click'},\n      {sel: '#tool_make_link,#tool_make_link_multi', fn: makeHyperlink, evt: 'click'},\n      {sel: '#tool_undo', fn: clickUndo, evt: 'click'},\n      {sel: '#tool_redo', fn: clickRedo, evt: 'click'},\n      {sel: '#tool_clone,#tool_clone_multi', fn: clickClone, evt: 'click', key: ['D', true]},\n      {sel: '#tool_group_elements', fn: clickGroup, evt: 'click', key: ['G', true]},\n      {sel: '#tool_ungroup', fn: clickGroup, evt: 'click'},\n      {sel: '#tool_unlink_use', fn: clickGroup, evt: 'click'},\n      {sel: '[id^=tool_align]', fn: clickAlign, evt: 'click'},\n      // these two lines are required to make Opera work properly with the flyout mechanism\n      // {sel: '#tools_rect_show', fn: clickRect, evt: 'click'},\n      // {sel: '#tools_ellipse_show', fn: clickEllipse, evt: 'click'},\n      {sel: '#tool_bold', fn: clickBold, evt: 'mousedown'},\n      {sel: '#tool_italic', fn: clickItalic, evt: 'mousedown'},\n      {sel: '#sidepanel_handle', fn: toggleSidePanel, key: ['X']},\n      {sel: '#copy_save_done', fn: cancelOverlays, evt: 'click'},\n\n      // Shortcuts not associated with buttons\n\n      {key: 'ctrl+left', fn () { rotateSelected(0, 1); }},\n      {key: 'ctrl+right', fn () { rotateSelected(1, 1); }},\n      {key: 'ctrl+shift+left', fn () { rotateSelected(0, 5); }},\n      {key: 'ctrl+shift+right', fn () { rotateSelected(1, 5); }},\n      {key: 'shift+O', fn: selectPrev},\n      {key: 'shift+P', fn: selectNext},\n      {key: [modKey + 'up', true], fn () { zoomImage(2); }},\n      {key: [modKey + 'down', true], fn () { zoomImage(0.5); }},\n      {key: [modKey + ']', true], fn () { moveUpDownSelected('Up'); }},\n      {key: [modKey + '[', true], fn () { moveUpDownSelected('Down'); }},\n      {key: ['up', true], fn () { moveSelected(0, -1); }},\n      {key: ['down', true], fn () { moveSelected(0, 1); }},\n      {key: ['left', true], fn () { moveSelected(-1, 0); }},\n      {key: ['right', true], fn () { moveSelected(1, 0); }},\n      {key: 'shift+up', fn () { moveSelected(0, -10); }},\n      {key: 'shift+down', fn () { moveSelected(0, 10); }},\n      {key: 'shift+left', fn () { moveSelected(-10, 0); }},\n      {key: 'shift+right', fn () { moveSelected(10, 0); }},\n      {key: ['alt+up', true], fn () { svgCanvas.cloneSelectedElements(0, -1); }},\n      {key: ['alt+down', true], fn () { svgCanvas.cloneSelectedElements(0, 1); }},\n      {key: ['alt+left', true], fn () { svgCanvas.cloneSelectedElements(-1, 0); }},\n      {key: ['alt+right', true], fn () { svgCanvas.cloneSelectedElements(1, 0); }},\n      {key: ['alt+shift+up', true], fn () { svgCanvas.cloneSelectedElements(0, -10); }},\n      {key: ['alt+shift+down', true], fn () { svgCanvas.cloneSelectedElements(0, 10); }},\n      {key: ['alt+shift+left', true], fn () { svgCanvas.cloneSelectedElements(-10, 0); }},\n      {key: ['alt+shift+right', true], fn () { svgCanvas.cloneSelectedElements(10, 0); }},\n      {key: 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n      {key: modKey + 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n\n      // Standard shortcuts\n      {key: modKey + 'z', fn: clickUndo},\n      {key: modKey + 'shift+z', fn: clickRedo},\n      {key: modKey + 'y', fn: clickRedo},\n\n      {key: modKey + 'x', fn: cutSelected},\n      {key: modKey + 'c', fn: copySelected},\n      {key: modKey + 'v', fn: pasteInCenter}\n    ];\n\n    // Tooltips not directly associated with a single function\n    const keyAssocs = {\n      '4/Shift+4': '#tools_rect_show',\n      '5/Shift+5': '#tools_ellipse_show'\n    };\n\n    return { /** @lends module:SVGEditor~Actions */\n      /**\n       * @returns {undefined}\n       */\n      setAll () {\n        const flyouts = {};\n\n        $.each(toolButtons, function (i, opts) {\n          // Bind function to button\n          let btn;\n          if (opts.sel) {\n            btn = $(opts.sel);\n            if (!btn.length) { return true; } // Skip if markup does not exist\n            if (opts.evt) {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map tool button click events as well\n              if (isTouch() && opts.evt === 'click') {\n                opts.evt = 'mousedown';\n              }\n              btn[opts.evt](opts.fn);\n            }\n\n            // Add to parent flyout menu, if able to be displayed\n            if (opts.parent && $(opts.parent + '_show').length) {\n              let fH = $(opts.parent);\n              if (!fH.length) {\n                fH = makeFlyoutHolder(opts.parent.substr(1));\n              }\n              if (opts.prepend) {\n                btn[0].style.margin = 'initial';\n              }\n              fH[opts.prepend ? 'prepend' : 'append'](btn);\n\n              if (!Array.isArray(flyouts[opts.parent])) {\n                flyouts[opts.parent] = [];\n              }\n              flyouts[opts.parent].push(opts);\n            }\n          }\n\n          // Bind function to shortcut key\n          if (opts.key) {\n            // Set shortcut based on options\n            let keyval,\n              // disInInp = true,\n              pd = false;\n            if (Array.isArray(opts.key)) {\n              keyval = opts.key[0];\n              if (opts.key.length > 1) { pd = opts.key[1]; }\n              // if (opts.key.length > 2) { disInInp = opts.key[2]; }\n            } else {\n              keyval = opts.key;\n            }\n            keyval = String(keyval);\n\n            const {fn} = opts;\n            $.each(keyval.split('/'), function (j, key) {\n              $(document).bind('keydown', key, function (e) {\n                fn();\n                if (pd) {\n                  e.preventDefault();\n                }\n                // Prevent default on ALL keys?\n                return false;\n              });\n            });\n\n            // Put shortcut in title\n            if (opts.sel && !opts.hidekey && btn.attr('title')) {\n              const newTitle = btn.attr('title').split('[')[0] + ' (' + keyval + ')';\n              keyAssocs[keyval] = opts.sel;\n              // Disregard for menu items\n              if (!btn.parents('#main_menu').length) {\n                btn.attr('title', newTitle);\n              }\n            }\n          }\n          return true;\n        });\n\n        // Setup flyouts\n        setupFlyouts(flyouts);\n\n        // Misc additional actions\n\n        // Make 'return' keypress trigger the change event\n        $('.attr_changer, #image_url').bind(\n          'keydown',\n          'return',\n          function (evt) {\n            $(this).change();\n            evt.preventDefault();\n          }\n        );\n\n        $(window).bind('keydown', 'tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectNext();\n          }\n        }).bind('keydown', 'shift+tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectPrev();\n          }\n        });\n\n        $('#tool_zoom').dblclick(dblclickZoom);\n      },\n      /**\n       * @returns {undefined}\n       */\n      setTitles () {\n        $.each(keyAssocs, function (keyval, sel) {\n          const menu = ($(sel).parents('#main_menu').length);\n\n          $(sel).each(function () {\n            let t;\n            if (menu) {\n              t = $(this).text().split(' [')[0];\n            } else {\n              t = this.title.split(' [')[0];\n            }\n            let keyStr = '';\n            // Shift+Up\n            $.each(keyval.split('/'), function (i, key) {\n              const modBits = key.split('+');\n              let mod = '';\n              if (modBits.length > 1) {\n                mod = modBits[0] + '+';\n                key = modBits[1];\n              }\n              keyStr += (i ? '/' : '') + mod + (uiStrings['key_' + key] || key);\n            });\n            if (menu) {\n              this.lastChild.textContent = t + ' [' + keyStr + ']';\n            } else {\n              this.title = t + ' [' + keyStr + ']';\n            }\n          });\n        });\n      },\n      /**\n       * @param {string} sel Selector to match\n       * @returns {module:SVGEditor.ToolButton}\n       */\n      getButtonData (sel) {\n        return Object.values(toolButtons).find((btn) => {\n          return btn.sel === sel;\n        });\n      }\n    };\n  }());\n\n  // Select given tool\n  editor.ready(function () {\n    let tool;\n    const itool = curConfig.initTool,\n      container = $('#tools_left, #svg_editor .tools_flyout'),\n      preTool = container.find('#tool_' + itool),\n      regTool = container.find('#' + itool);\n    if (preTool.length) {\n      tool = preTool;\n    } else if (regTool.length) {\n      tool = regTool;\n    } else {\n      tool = $('#tool_select');\n    }\n    tool.click().mouseup();\n\n    if (curConfig.wireframe) {\n      $('#tool_wireframe').click();\n    }\n\n    if (curConfig.showlayers) {\n      toggleSidePanel();\n    }\n\n    $('#rulers').toggle(Boolean(curConfig.showRulers));\n\n    if (curConfig.showRulers) {\n      $('#show_rulers')[0].checked = true;\n    }\n\n    if (curConfig.baseUnit) {\n      $('#base_unit').val(curConfig.baseUnit);\n    }\n\n    if (curConfig.gridSnapping) {\n      $('#grid_snapping_on')[0].checked = true;\n    }\n\n    if (curConfig.snappingStep) {\n      $('#grid_snapping_step').val(curConfig.snappingStep);\n    }\n\n    if (curConfig.gridColor) {\n      $('#grid_color').val(curConfig.gridColor);\n    }\n  });\n\n  // init SpinButtons\n  $('#rect_rx').SpinButton({\n    min: 0, max: 1000, stateObj, callback: changeRectRadius\n  });\n  $('#stroke_width').SpinButton({\n    min: 0, max: 99, smallStep: 0.1, stateObj, callback: changeStrokeWidth\n  });\n  $('#angle').SpinButton({\n    min: -180, max: 180, step: 5, stateObj, callback: changeRotationAngle\n  });\n  $('#font_size').SpinButton({\n    min: 0.001, stepfunc: stepFontSize, stateObj, callback: changeFontSize\n  });\n  $('#group_opacity').SpinButton({\n    min: 0, max: 100, step: 5, stateObj, callback: changeOpacity\n  });\n  $('#blur').SpinButton({\n    min: 0, max: 10, step: 0.1, stateObj, callback: changeBlur\n  });\n  $('#zoom').SpinButton({\n    min: 0.001, max: 10000, step: 50, stepfunc: stepZoom,\n    stateObj, callback: changeZoom\n  // Set default zoom\n  }).val(\n    svgCanvas.getZoom() * 100\n  );\n\n  $('#workarea').contextMenu(\n    {\n      menu: 'cmenu_canvas',\n      inSpeed: 0\n    },\n    function (action, el, pos) {\n      switch (action) {\n      case 'delete':\n        deleteSelected();\n        break;\n      case 'cut':\n        cutSelected();\n        break;\n      case 'copy':\n        copySelected();\n        break;\n      case 'paste':\n        svgCanvas.pasteElements();\n        break;\n      case 'paste_in_place':\n        svgCanvas.pasteElements('in_place');\n        break;\n      case 'group':\n      case 'group_elements':\n        svgCanvas.groupSelectedElements();\n        break;\n      case 'ungroup':\n        svgCanvas.ungroupSelectedElement();\n        break;\n      case 'move_front':\n        moveToTopSelected();\n        break;\n      case 'move_up':\n        moveUpDownSelected('Up');\n        break;\n      case 'move_down':\n        moveUpDownSelected('Down');\n        break;\n      case 'move_back':\n        moveToBottomSelected();\n        break;\n      default:\n        if (hasCustomHandler(action)) {\n          getCustomHandler(action).call();\n        }\n        break;\n      }\n    }\n  );\n\n  /**\n  * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}\n  * @param {\"dupe\"|\"delete\"|\"merge_down\"|\"merge_all\"} action\n  * @param {external:jQuery} el\n  * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos\n  * @returns {undefined}\n  */\n  const lmenuFunc = function (action, el, pos) {\n    switch (action) {\n    case 'dupe':\n      /* await */ cloneLayer();\n      break;\n    case 'delete':\n      deleteLayer();\n      break;\n    case 'merge_down':\n      mergeLayer();\n      break;\n    case 'merge_all':\n      svgCanvas.mergeAllLayers();\n      updateContextPanel();\n      populateLayers();\n      break;\n    }\n  };\n\n  $('#layerlist').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0\n    },\n    lmenuFunc\n  );\n\n  $('#layer_moreopts').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0,\n      allowLeft: true\n    },\n    lmenuFunc\n  );\n\n  $('.contextMenu li').mousedown(function (ev) {\n    ev.preventDefault();\n  });\n\n  $('#cmenu_canvas li').disableContextMenu();\n  canvMenu.enableContextMenuItems('#delete,#cut,#copy');\n\n  /**\n   * @returns {undefined}\n   */\n  function enableOrDisableClipboard () {\n    let svgeditClipboard;\n    try {\n      svgeditClipboard = localStorage.getItem('svgedit_clipboard');\n    } catch (err) {}\n    canvMenu[(svgeditClipboard ? 'en' : 'dis') + 'ableContextMenuItems'](\n      '#paste,#paste_in_place'\n    );\n  }\n  enableOrDisableClipboard();\n\n  window.addEventListener('storage', function (e) {\n    if (e.key !== 'svgedit_clipboard') { return; }\n\n    enableOrDisableClipboard();\n  });\n\n  window.addEventListener('beforeunload', function (e) {\n    // Suppress warning if page is empty\n    if (undoMgr.getUndoStackSize() === 0) {\n      editor.showSaveWarning = false;\n    }\n\n    // showSaveWarning is set to 'false' when the page is saved.\n    if (!curConfig.no_save_warning && editor.showSaveWarning) {\n      // Browser already asks question about closing the page\n      e.returnValue = uiStrings.notification.unsavedChanges; // Firefox needs this when beforeunload set by addEventListener (even though message is not used)\n      return uiStrings.notification.unsavedChanges;\n    }\n    return true;\n  });\n\n  /**\n  * Expose the `uiStrings`.\n  * @function module:SVGEditor.canvas.getUIStrings\n  * @returns {module:SVGEditor.uiStrings}\n  */\n  editor.canvas.getUIStrings = function () {\n    return uiStrings;\n  };\n\n  /**\n  * @returns {Promise} Resolves to boolean indicating `true` if there were no changes\n  *  and `false` after the user confirms.\n  */\n  editor.openPrep = function () {\n    $('#main_menu').hide();\n    if (undoMgr.getUndoStackSize() === 0) {\n      return true;\n    }\n    return $.confirm(uiStrings.notification.QwantToOpen);\n  };\n\n  /**\n   *\n   * @param {Event} e\n   * @returns {undefined}\n   */\n  function onDragEnter (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // and indicator should be displayed here, such as \"drop files here\"\n  }\n\n  /**\n   *\n   * @param {Event} e\n   * @returns {undefined}\n   */\n  function onDragOver (e) {\n    e.stopPropagation();\n    e.preventDefault();\n  }\n\n  /**\n   *\n   * @param {Event} e\n   * @returns {undefined}\n   */\n  function onDragLeave (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // hypothetical indicator should be removed here\n  }\n  // Use HTML5 File API: http://www.w3.org/TR/FileAPI/\n  // if browser has HTML5 File API support, then we will show the open menu item\n  // and provide a file input to click. When that change event fires, it will\n  // get the text contents of the file and send it to the canvas\n  if (window.FileReader) {\n    /**\n    * @param {Event} e\n    * @returns {undefined}\n    */\n    const importImage = function (e) {\n      $.process_cancel(uiStrings.notification.loadingImage);\n      e.stopPropagation();\n      e.preventDefault();\n      $('#workarea').removeAttr('style');\n      $('#main_menu').hide();\n      const file = (e.type === 'drop') ? e.dataTransfer.files[0] : this.files[0];\n      if (!file) {\n        $('#dialog_box').hide();\n        return;\n      }\n      /* if (file.type === 'application/pdf') { // Todo: Handle PDF imports\n\n      }\n      else */\n      if (!file.type.includes('image')) {\n        return;\n      }\n      // Detected an image\n      // svg handling\n      let reader;\n      if (file.type.includes('svg')) {\n        reader = new FileReader();\n        reader.onloadend = function (ev) {\n          const newElement = svgCanvas.importSvgString(ev.target.result, true);\n          svgCanvas.ungroupSelectedElement();\n          svgCanvas.ungroupSelectedElement();\n          svgCanvas.groupSelectedElements();\n          svgCanvas.alignSelectedElements('m', 'page');\n          svgCanvas.alignSelectedElements('c', 'page');\n          // highlight imported element, otherwise we get strange empty selectbox\n          svgCanvas.selectOnly([newElement]);\n          $('#dialog_box').hide();\n        };\n        reader.readAsText(file);\n      } else {\n        // bitmap handling\n        reader = new FileReader();\n        reader.onloadend = function ({target: {result}}) {\n          /**\n          * Insert the new image until we know its dimensions\n          * @param {Float} width\n          * @param {Float} height\n          * @returns {undefined}\n          */\n          const insertNewImage = function (width, height) {\n            const newImage = svgCanvas.addSVGElementFromJson({\n              element: 'image',\n              attr: {\n                x: 0,\n                y: 0,\n                width,\n                height,\n                id: svgCanvas.getNextId(),\n                style: 'pointer-events:inherit'\n              }\n            });\n            svgCanvas.setHref(newImage, result);\n            svgCanvas.selectOnly([newImage]);\n            svgCanvas.alignSelectedElements('m', 'page');\n            svgCanvas.alignSelectedElements('c', 'page');\n            updateContextPanel();\n            $('#dialog_box').hide();\n          };\n          // create dummy img so we know the default dimensions\n          let imgWidth = 100;\n          let imgHeight = 100;\n          const img = new Image();\n          img.style.opacity = 0;\n          img.onload = function () {\n            imgWidth = img.offsetWidth || img.naturalWidth || img.width;\n            imgHeight = img.offsetHeight || img.naturalHeight || img.height;\n            insertNewImage(imgWidth, imgHeight);\n          };\n          img.src = result;\n        };\n        reader.readAsDataURL(file);\n      }\n    };\n\n    workarea[0].addEventListener('dragenter', onDragEnter);\n    workarea[0].addEventListener('dragover', onDragOver);\n    workarea[0].addEventListener('dragleave', onDragLeave);\n    workarea[0].addEventListener('drop', importImage);\n\n    const open = $('<input type=\"file\">').click(async function () {\n      const ok = await editor.openPrep();\n      if (!ok) { return; }\n      svgCanvas.clear();\n      if (this.files.length === 1) {\n        $.process_cancel(uiStrings.notification.loadingImage);\n        const reader = new FileReader();\n        reader.onloadend = async function (e) {\n          await loadSvgString(e.target.result);\n          updateCanvas();\n        };\n        reader.readAsText(this.files[0]);\n      }\n    });\n    $('#tool_open').show().prepend(open);\n\n    const imgImport = $('<input type=\"file\">').change(importImage);\n    $('#tool_import').show().prepend(imgImport);\n  }\n\n  updateCanvas(true);\n  //  const revnums = 'svg-editor.js ($Rev$) ';\n  //  revnums += svgCanvas.getVersion();\n  //  $('#copyright')[0].setAttribute('title', revnums);\n\n  const loadedExtensionNames = [];\n  /**\n  * @function module:SVGEditor.setLang\n  * @param {string} lang The language code\n  * @param {module:locale.LocaleStrings} allStrings See {@tutorial LocaleDocs}\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n  * @returns {Promise} A Promise which resolves to `undefined`\n  */\n  const setLang = editor.setLang = async function (lang, allStrings) {\n    editor.langChanged = true;\n    $.pref('lang', lang);\n    $('#lang_select').val(lang);\n    if (!allStrings) {\n      return;\n    }\n    $.extend(uiStrings, allStrings);\n\n    // const notif = allStrings.notification; // Currently unused\n    // $.extend will only replace the given strings\n    const oldLayerName = $('#layerlist tr.layersel td.layername').text();\n    const renameLayer = (oldLayerName === uiStrings.common.layer + ' 1');\n\n    svgCanvas.setUiStrings(allStrings);\n    Actions.setTitles();\n\n    if (renameLayer) {\n      svgCanvas.renameCurrentLayer(uiStrings.common.layer + ' 1');\n      populateLayers();\n    }\n\n    // In case extensions loaded before the locale, now we execute a callback on them\n    if (extsPreLang.length) {\n      await Promise.all(extsPreLang.map((ext) => {\n        loadedExtensionNames.push(ext.name);\n        return ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n      }));\n      extsPreLang.length = 0;\n    } else {\n      loadedExtensionNames.forEach((loadedExtensionName) => {\n        this.runExtension(\n          loadedExtensionName,\n          'langReady',\n          /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */ {\n            lang, uiStrings, importLocale: getImportLocale({defaultLang: lang, defaultName: loadedExtensionName})\n          }\n        );\n      });\n    }\n    svgCanvas.runExtensions('langChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */ lang);\n\n    // Update flyout tooltips\n    setFlyoutTitles();\n\n    // Copy title for certain tool elements\n    const elems = {\n      '#stroke_color': '#tool_stroke .icon_label, #tool_stroke .color_block',\n      '#fill_color': '#tool_fill label, #tool_fill .color_block',\n      '#linejoin_miter': '#cur_linejoin',\n      '#linecap_butt': '#cur_linecap'\n    };\n\n    $.each(elems, function (source, dest) {\n      $(dest).attr('title', $(source)[0].title);\n    });\n\n    // Copy alignment titles\n    $('#multiselected_panel div[id^=tool_align]').each(function () {\n      $('#tool_pos' + this.id.substr(10))[0].title = this.title;\n    });\n  };\n  localeInit(\n    /**\n    * @implements {module:locale.LocaleEditorInit}\n    */\n    {\n      /**\n      * Gets an array of results from extensions with a `addLangData` method,\n      * returning an object with a `data` property set to its locales (to be\n      * merged with regular locales).\n      * @param {string} langParam\n      * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n      * @todo Can we forego this in favor of `langReady` (or forego `langReady`)?\n      * @returns {module:locale.AddLangExtensionLocaleData[]}\n      */\n      addLangData (langParam) {\n        return svgCanvas.runExtensions(\n          'addLangData',\n          /**\n           * @function\n           * @type {module:svgcanvas.ExtensionVarBuilder}\n           * @param {string} name\n           * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}\n           */\n          (name) => { // We pass in a function as we don't know the extension name here when defining this `addLangData` method\n            return {\n              lang: langParam,\n              importLocale: getImportLocale({defaultLang: langParam, defaultName: name})\n            };\n          },\n          true\n        );\n      },\n      curConfig\n    }\n  );\n  // Load extensions\n  // Bit of a hack to run extensions in local Opera/IE9\n  if (document.location.protocol === 'file:') {\n    setTimeout(extAndLocaleFunc, 100);\n  } else {\n    // Returns a promise (if we wanted to fire 'extensions-loaded' event, potentially useful to hide interface as some extension locales are only available after this)\n    extAndLocaleFunc();\n  }\n};\n\n/**\n* @callback module:SVGEditor.ReadyCallback\n* @returns {Promise|undefined}\n*/\n/**\n* Queues a callback to be invoked when the editor is ready (or\n*   to be invoked immediately if it is already ready--i.e.,\n*   if `runCallbacks` has been run).\n* @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke\n* @returns {Promise} Resolves when all callbacks, including the supplied have resolved\n*/\neditor.ready = function (cb) { // eslint-disable-line promise/prefer-await-to-callbacks\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    if (isReady) {\n      resolve(cb()); 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ACVhV,EAAKgD,GAAKxC,EACVqyE,UAAU71D,eAAe,CAAChd,IAAO,QAEjC6yE,UAAUnoC,wBAAwBhrC,EAAMc,eAErC8yC,QACE,IAITt5C,IAAE,YAAYu2D,UAAU,eAChB+1B,EAAMtsF,IAAE,yBACdA,IAAE3L,MAAM6N,OAAOoqF,GACfA,EAAIz4D,QAAQvxB,WAGdtC,IAAE,iBAAiBqyC,UAAU,SAAU3zB,OAIjC4mB,EAFEo6B,EAAShhD,EAAIrsB,UAA2B,IAAfqsB,EAAInsB,OAAe,SAAW,OACzD83C,EAAQrqC,IAAE3L,MAAM82B,KAAK,OAIX,SAAVkf,GAA8B,gBAAVA,GAAqC,YAAVA,GACjDA,EAAQ,OACR/E,EAAQ,IAAItlC,IAAE0jD,UAAUC,OAExBre,EAAQ,IAAItlC,IAAE0jD,UAAUC,MAAM,CAACE,MAAO,IAAKC,WAAYzZ,EAAMp/B,OAAO,KAGtEu2E,EAAS9hB,GAAQjc,SAASne,GAC1BuzC,UAAUl2B,SAAS+c,EAAQr1B,GAEb,SAAVA,GAA0D,IAAtCwuC,UAAUt0B,gBAAgBmb,IAChDmZ,UAAUj1B,gBAAgB8b,EAAQ,GAEpC2nB,MACC5rF,KAAK,cAAe,SAAU4I,GAAKA,EAAEzR,mBAExCoN,IAAE,wBAAwBkjB,GAAG,QAAS,WACpCljB,IAAE,iBAAiBizB,YAAY,cAIzBozD,GAAQ3wC,EAAS,GAEnBlzB,GAAQ,KAAMC,GAAQ,KACxBmsE,IAAU,EAAOC,IAAS,EAE5B7uF,IAAE,cAAcvE,KAAK,oBAAqB,SAAUijB,UAClC,IAAZkwE,KAEJvI,GAAMK,YAAehoE,EAAIhtB,QAAU8wB,GACnC6jE,GAAMM,WAAcjoE,EAAI/sB,QAAU8wB,GAElCD,GAAQ9D,EAAIhtB,QACZ+wB,GAAQ/D,EAAI/sB,QAEK,YAAb+sB,EAAIntB,OAAsBq9F,IAAU,IACjC,KACNv8C,UAAU,SAAU3zB,UACF,IAAfA,EAAInsB,SAA2B,IAAXs8F,KACtBD,IAAU,EACVpsE,GAAQ9D,EAAIhtB,QACZ+wB,GAAQ/D,EAAI/sB,SACL,KAKXqO,IAAE/N,QAAQ2iD,QAAQ,WAChBg6C,IAAU,IAGZ5uF,IAAEnN,UAAU4I,KAAK,UAAW,QAAS,SAAUijB,GAC7Cm6D,UAAUvmC,SAAWu8C,IAAS,EAC9BnwE,EAAI9rB,mBACH6I,KAAK,QAAS,QAAS,SAAUijB,GAClCA,EAAI9rB,iBACJimF,UAAUvmC,SAAWu8C,IAAS,IAC7BpzF,KAAK,UAAW,QAAS,SAAUijB,GACR,SAAxBm6D,UAAUp2B,WACZ/M,EAASnjB,IAAI,SAAUqvD,KAExBnmF,KAAK,QAAS,QAAS,SAAUijB,GACN,SAAxBm6D,UAAUp2B,WACZ/M,EAASnjB,IAAI,SAAUovD,KAQ3B3Z,OAAOsnB,WAAa,SAAU92B,GAC5BqgB,UAAUvmC,SAAWu8C,GAASr2B,kBAK1BjmE,EAASyN,IAAE,cACXuvF,EAAUvvF,IAAE,mBACZmT,EAAOnT,IAAE,cAEXorF,GAAW,EACX1oF,EAAS,EACT8sF,GAAU,EACVC,GAAW,EASfzvF,IAAE/N,QAAQ2iD,QAAQ,SAAUl2B,GACrB0sE,IACH74F,EAAOqmE,YAAY,cAGQ,UAAvBl6C,EAAIhsB,OAAO6Z,QACb4G,EAAKiqD,QAAQ,KACHqyB,IACVA,GAAW,EACXzvF,IAAE0e,EAAIhsB,QAAQo8B,MAAM,WAClB3b,EAAKof,IAAI,cAAe,WAAWhZ,8yfAjY5B,SAAU8wB,EAAO/N,EAAM/qC,OAEhCshC,EAAO,CAACgxB,MAAOvnB,MACjB+N,EAAMrtB,WAAW,SAAU,KACzB6hC,EAAUg6B,UAAU37D,WAAWmtB,GAMnCxX,GAJEgsB,EADEA,EACQA,EAAQ37C,WAAU,GAElBlD,IAAE,IAAMzO,EAAO,iBAAiB,IAE/Bgb,SAAWsyC,OACfxU,EAAMrtB,WAAW,KAC1B6V,EAAKixB,WAAazZ,EAAMp/B,OAAO,GAE/B4nB,EAAKixB,WAAa,cAEb,IAAI9jD,IAAE0jD,UAAUC,MAAM9wB,pnmDA8EN,SAAUy2D,GACjCzQ,UAAUzyB,cAAckjC,EAAI1jF,yFAaJ,SAAU0jF,OAC9B9iF,EAAM8iF,EAAI1jF,MACF,IAARY,GAAa+E,GAAmB,CAAC,OAAQ,YAAY5K,SAAS4K,EAAgBgY,YAChF/c,EAAM8iF,EAAI1jF,MAAQ,GAEpBizE,UAAU30B,eAAe19C,4EAMC,SAAU8iF,GACpCzQ,UAAUxoC,iBAAiBi5C,EAAI1jF,OAC/B5F,IAAE,kBAAkBizB,YAAY,WAAoC,IAAxB9hB,SAASm4E,EAAI1jF,6MApBpC,SAAU0jF,GAC/BzQ,UAAUhzB,YAAYyjC,EAAI1jF"}
\ No newline at end of file
diff --git a/dist/index-umd.js b/dist/index-umd.js
index 822864d7..8bf20c80 100644
--- a/dist/index-umd.js
+++ b/dist/index-umd.js
@@ -200,6 +200,12 @@
   }
 
   // http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
+
+  /**
+   *
+   * @param {Event} ev
+   * @returns {undefined}
+   */
   function touchHandler(ev) {
     var changedTouches = ev.changedTouches,
         first = changedTouches[0];
@@ -225,7 +231,8 @@
     var screenX = first.screenX,
         screenY = first.screenY,
         clientX = first.clientX,
-        clientY = first.clientY;
+        clientY = first.clientY; // eslint-disable-line no-shadow
+
     var simulatedEvent = new MouseEvent(type, {
       // Event interface
       bubbles: true,
@@ -318,6 +325,11 @@
   * including the latest spec changes which were implemented in Firefox 43 and
   * Chrome 46.
   */
+
+  /* eslint-disable no-shadow, class-methods-use-this */
+  // Linting: We avoid `no-shadow` as ESLint thinks these are still available globals
+  // Linting: We avoid `class-methods-use-this` as this is a polyfill that must
+  //   follow the conventions
   (function () {
     if (!('SVGPathSeg' in window)) {
       // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
@@ -2073,7 +2085,7 @@
               return [];
             }
 
-            var owningPathSegList = this;
+            var owningPathSegList = this; // eslint-disable-line consistent-this
 
             var Builder =
             /*#__PURE__*/
@@ -2423,6 +2435,19 @@
                       return new SVGPathSegClosePath(owningPathSegList);
 
                     case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:
+                      {
+                        var points = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x2: this._parseNumber(),
+                          y2: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
                       {
                         var _points = {
                           x1: this._parseNumber(),
@@ -2432,23 +2457,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
+                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
                       {
                         var _points2 = {
-                          x1: this._parseNumber(),
-                          y1: this._parseNumber(),
                           x2: this._parseNumber(),
                           y2: this._parseNumber(),
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points2.x, _points2.y, _points2.x1, _points2.y1, _points2.x2, _points2.y2);
+                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points2.x, _points2.y, _points2.x2, _points2.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
                       {
                         var _points3 = {
                           x2: this._parseNumber(),
@@ -2456,21 +2479,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
-                      }
-
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
-                      {
-                        var _points4 = {
-                          x2: this._parseNumber(),
-                          y2: this._parseNumber(),
-                          x: this._parseNumber(),
-                          y: this._parseNumber()
-                        };
-                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points4.x, _points4.y, _points4.x2, _points4.y2);
+                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
                       }
 
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:
+                      {
+                        var _points4 = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points4.x, _points4.y, _points4.x1, _points4.y1);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
                       {
                         var _points5 = {
                           x1: this._parseNumber(),
@@ -2478,18 +2501,9 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
+                        return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
-                      var points = {
-                        x1: this._parseNumber(),
-                        y1: this._parseNumber(),
-                        x: this._parseNumber(),
-                        y: this._parseNumber()
-                      };
-                      return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
-
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
                       return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
 
@@ -2622,13 +2636,13 @@
   var $ = jQuery;
 
   var supportsSVG_ = function () {
-    return !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;
+    return Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);
   }();
   var _navigator = navigator,
       userAgent = _navigator.userAgent;
   var svg = document.createElementNS(NS.SVG, 'svg'); // Note: Browser sniffing should only be used if no other detection method is possible
 
-  var isOpera_ = !!window.opera;
+  var isOpera_ = Boolean(window.opera);
   var isWebkit_ = userAgent.includes('AppleWebKit');
   var isGecko_ = userAgent.includes('Gecko/');
   var isIE_ = userAgent.includes('MSIE');
@@ -2638,11 +2652,11 @@
   var isTouch_ = 'ontouchstart' in window;
 
   var supportsSelectors_ = function () {
-    return !!svg.querySelector;
+    return Boolean(svg.querySelector);
   }();
 
   var supportsXpath_ = function () {
-    return !!document.evaluate;
+    return Boolean(document.evaluate);
   }(); // segList functions (for FF1.5 and 2.0)
 
 
@@ -2905,7 +2919,7 @@
   * @param {external:jQuery} $ The jQuery object to which to add the plug-in
   * @returns {external:jQuery}
   */
-  function jqPluginSVG ($) {
+  function jQueryPluginSVG($) {
     var proxied = $.fn.attr,
         svgns = 'http://www.w3.org/2000/svg';
     /**
@@ -2923,7 +2937,7 @@
       var len = this.length;
 
       if (!len) {
-        return proxied.apply(this, arguments);
+        return proxied.call(this, key, value);
       }
 
       for (var i = 0; i < len; ++i) {
@@ -2974,7 +2988,7 @@
             return _attr;
           }
         } else {
-          return proxied.apply(this, arguments);
+          return proxied.call(this, key, value);
         }
       }
 
@@ -2984,7 +2998,12 @@
     return $;
   }
 
-  var svgroot = document.createElementNS(NS.SVG, 'svg'); // Helper function.
+  var svgroot = document.createElementNS(NS.SVG, 'svg');
+  /**
+   * Helper function to convert `SVGTransform` to a string.
+   * @param {SVGTransform} xform
+   * @returns {string}
+   */
 
   function transformToString(xform) {
     var m = xform.matrix;
@@ -3108,11 +3127,14 @@
   * These methods do not currently raise any exceptions.
   * These methods also do not check that transforms are being inserted.  This is basically
   * implementing as much of SVGTransformList that we need to get the job done.
+  * @implements {module:SVGTransformList.SVGEditTransformList}
   */
 
   var SVGTransformList =
   /*#__PURE__*/
   function () {
+    // eslint-disable-line no-shadow
+
     /**
     * @param {Element} elem
     */
@@ -3183,7 +3205,7 @@
                 values.push(0, 0);
               }
 
-              xform[fname].apply(xform, values);
+              xform[fname].apply(xform, _toConsumableArray(values));
 
               _this._list.appendItem(xform);
             })();
@@ -3195,23 +3217,16 @@
         if (item) {
           // Check if this transform is already in a transformlist, and
           // remove it if so.
-          var found = false;
-
-          for (var id in listMap_) {
-            var tl = listMap_[id];
-
+          Object.values(listMap_).some(function (tl) {
             for (var i = 0, len = tl._xforms.length; i < len; ++i) {
               if (tl._xforms[i] === item) {
-                found = true;
                 tl.removeItem(i);
-                break;
+                return true;
               }
             }
 
-            if (found) {
-              break;
-            }
-          }
+            return false;
+          });
         }
       };
 
@@ -3394,6 +3409,7 @@
    */
 
   var removeElementFromListMap = function removeElementFromListMap(elem) {
+    // eslint-disable-line import/no-mutable-exports
     if (elem.id && listMap_[elem.id]) {
       delete listMap_[elem.id];
     }
@@ -3477,7 +3493,7 @@
 
   /**
    * @function module:units.ElementContainer#getElement
-   * @returns {Element} An element in the container given an id
+   * @returns {?Element} An element in the container given an id
    */
 
   /**
@@ -3574,8 +3590,7 @@
     var digits = elementContainer_.getRoundDigits();
 
     if (!isNaN(val)) {
-      // Note that + converts to Number
-      return +(+val).toFixed(digits);
+      return Number(Number(val).toFixed(digits));
     }
 
     if (Array.isArray(val)) {
@@ -3715,7 +3730,7 @@
 
       try {
         var elem = elementContainer_.getElement(val);
-        result = elem == null || elem === selectedElement;
+        result = isNullish(elem) || elem === selectedElement;
       } catch (e) {}
 
       return result;
@@ -3862,6 +3877,7 @@
     _createClass(MoveElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.MoveElementCommand';
       }
       /**
@@ -3948,6 +3964,7 @@
     _createClass(InsertElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.InsertElementCommand';
       }
       /**
@@ -4037,6 +4054,7 @@
     _createClass(RemoveElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.RemoveElementCommand';
       }
       /**
@@ -4077,9 +4095,9 @@
 
         removeElementFromListMap(this.elem);
 
-        if (this.nextSibling == null) {
+        if (isNullish(this.nextSibling)) {
           if (window.console) {
-            console.log('Error: reference element was lost');
+            console.log('Error: reference element was lost'); // eslint-disable-line no-console
           }
         }
 
@@ -4152,6 +4170,7 @@
     _createClass(ChangeElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.ChangeElementCommand';
       }
       /**
@@ -4164,35 +4183,38 @@
     }, {
       key: "apply",
       value: function apply(handler) {
+        var _this5 = this;
+
         if (handler) {
           handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);
         }
 
         var bChangedTransform = false;
+        Object.entries(this.newValues).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              attr = _ref2[0],
+              value = _ref2[1];
 
-        for (var attr in this.newValues) {
-          if (this.newValues[attr]) {
+          if (value) {
             if (attr === '#text') {
-              this.elem.textContent = this.newValues[attr];
+              _this5.elem.textContent = value;
             } else if (attr === '#href') {
-              setHref(this.elem, this.newValues[attr]);
+              setHref(_this5.elem, value);
             } else {
-              this.elem.setAttribute(attr, this.newValues[attr]);
+              _this5.elem.setAttribute(attr, value);
             }
+          } else if (attr === '#text') {
+            _this5.elem.textContent = '';
           } else {
-            if (attr === '#text') {
-              this.elem.textContent = '';
-            } else {
-              this.elem.setAttribute(attr, '');
-              this.elem.removeAttribute(attr);
-            }
+            _this5.elem.setAttribute(attr, '');
+
+            _this5.elem.removeAttribute(attr);
           }
 
           if (attr === 'transform') {
             bChangedTransform = true;
           }
-        } // relocate rotational transform, if necessary
-
+        }); // relocate rotational transform, if necessary
 
         if (!bChangedTransform) {
           var angle = getRotationAngle(this.elem);
@@ -4225,34 +4247,36 @@
     }, {
       key: "unapply",
       value: function unapply(handler) {
+        var _this6 = this;
+
         if (handler) {
           handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);
         }
 
         var bChangedTransform = false;
+        Object.entries(this.oldValues).forEach(function (_ref3) {
+          var _ref4 = _slicedToArray(_ref3, 2),
+              attr = _ref4[0],
+              value = _ref4[1];
 
-        for (var attr in this.oldValues) {
-          if (this.oldValues[attr]) {
+          if (value) {
             if (attr === '#text') {
-              this.elem.textContent = this.oldValues[attr];
+              _this6.elem.textContent = value;
             } else if (attr === '#href') {
-              setHref(this.elem, this.oldValues[attr]);
+              setHref(_this6.elem, value);
             } else {
-              this.elem.setAttribute(attr, this.oldValues[attr]);
+              _this6.elem.setAttribute(attr, value);
             }
+          } else if (attr === '#text') {
+            _this6.elem.textContent = '';
           } else {
-            if (attr === '#text') {
-              this.elem.textContent = '';
-            } else {
-              this.elem.removeAttribute(attr);
-            }
+            _this6.elem.removeAttribute(attr);
           }
 
           if (attr === 'transform') {
             bChangedTransform = true;
           }
-        } // relocate rotational transform, if necessary
-
+        }); // relocate rotational transform, if necessary
 
         if (!bChangedTransform) {
           var angle = getRotationAngle(this.elem);
@@ -4309,19 +4333,20 @@
     * @param {string} [text] - An optional string visible to user related to this change
     */
     function BatchCommand(text) {
-      var _this5;
+      var _this7;
 
       _classCallCheck(this, BatchCommand);
 
-      _this5 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
-      _this5.text = text || 'Batch Command';
-      _this5.stack = [];
-      return _this5;
+      _this7 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
+      _this7.text = text || 'Batch Command';
+      _this7.stack = [];
+      return _this7;
     }
 
     _createClass(BatchCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.BatchCommand';
       }
       /**
@@ -4558,7 +4583,7 @@
         while (i--) {
           var elem = elems[i];
 
-          if (elem == null) {
+          if (isNullish(elem)) {
             continue;
           }
 
@@ -4591,7 +4616,7 @@
         while (i--) {
           var elem = changeset.elements[i];
 
-          if (elem == null) {
+          if (isNullish(elem)) {
             continue;
           }
 
@@ -4611,7 +4636,7 @@
     return UndoManager;
   }();
 
-  var history = /*#__PURE__*/Object.freeze({
+  var hstry = /*#__PURE__*/Object.freeze({
     HistoryEventTypes: HistoryEventTypes,
     MoveElementCommand: MoveElementCommand,
     InsertElementCommand: InsertElementCommand,
@@ -4779,15 +4804,15 @@
   */
 
   var transformListToTransform = function transformListToTransform(tlist, min, max) {
-    if (tlist == null) {
+    if (isNullish(tlist)) {
       // Or should tlist = null have been prevented before this?
       return svg$1.createSVGTransformFromMatrix(svg$1.createSVGMatrix());
     }
 
     min = min || 0;
     max = max || tlist.numberOfItems - 1;
-    min = parseInt(min, 10);
-    max = parseInt(max, 10);
+    min = parseInt(min);
+    max = parseInt(max);
 
     if (min > max) {
       var temp = max;
@@ -4910,7 +4935,8 @@
    * @memberof module:path
   */
 
-  var path = null;
+  var path = null; // eslint-disable-line import/no-mutable-exports
+
   var editorContext_ = null;
   /**
   * @external MouseEvent
@@ -5162,14 +5188,14 @@
   */
 
   var getGripPt = function getGripPt(seg, altPt) {
-    var path = seg.path;
+    var pth = seg.path;
     var out = {
       x: altPt ? altPt.x : seg.item.x,
       y: altPt ? altPt.y : seg.item.y
     };
 
-    if (path.matrix) {
-      var pt = transformPoint(out.x, out.y, path.matrix);
+    if (pth.matrix) {
+      var pt = transformPoint(out.x, out.y, pth.matrix);
       out = pt;
     }
 
@@ -5181,18 +5207,18 @@
   /**
   * @function module:path.getPointFromGrip
   * @param {module:math.XYObject} pt
-  * @param {module:path.Path} path
+  * @param {module:path.Path} pth
   * @returns {module:math.XYObject}
   */
 
-  var getPointFromGrip = function getPointFromGrip(pt, path) {
+  var getPointFromGrip = function getPointFromGrip(pt, pth) {
     var out = {
       x: pt.x,
       y: pt.y
     };
 
-    if (path.matrix) {
-      pt = transformPoint(out.x, out.y, path.imatrix);
+    if (pth.matrix) {
+      pt = transformPoint(out.x, out.y, pth.imatrix);
       out.x = pt.x;
       out.y = pt.y;
     }
@@ -5265,8 +5291,8 @@
     var c = getElem('pathpointgrip_container');
 
     if (!c) {
-      var parent = getElem('selectorParentGroup');
-      c = parent.appendChild(document.createElementNS(NS.SVG, 'g'));
+      var parentElement = getElem('selectorParentGroup');
+      c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));
       c.id = 'pathpointgrip_container';
     }
 
@@ -5419,7 +5445,7 @@
   var replacePathSeg = function replacePathSeg(type, index, pts, elem) {
     var pth = elem || path.elem;
     var func = 'createSVGPathSeg' + pathFuncs[type];
-    var seg = pth[func].apply(pth, pts);
+    var seg = pth[func].apply(pth, _toConsumableArray(pts));
 
     if (supportsPathReplaceItem()) {
       pth.pathSegList.replaceItem(seg, index);
@@ -5485,13 +5511,12 @@
       var pts = ptObjToArr(seg.type, seg.item); // , true);
 
       for (var i = 0; i < pts.length; i += 2) {
-        var _pt = getGripPt(seg, {
+        var point = getGripPt(seg, {
           x: pts[i],
           y: pts[i + 1]
         });
-
-        pts[i] = _pt.x;
-        pts[i + 1] = _pt.y;
+        pts[i] = point.x;
+        pts[i + 1] = point.y;
       }
 
       replacePathSeg(seg.type, 1, pts, segLine);
@@ -5592,7 +5617,7 @@
       key: "showCtrlPts",
       value: function showCtrlPts(y) {
         for (var i in this.ctrlpts) {
-          if (this.ctrlpts.hasOwnProperty(i)) {
+          if ({}.hasOwnProperty.call(this.ctrlpts, i)) {
             this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');
           }
         }
@@ -5702,8 +5727,8 @@
         if (this.mate) {
           // The last point of a closed subpath has a 'mate',
           // which is the 'M' segment of the subpath
-          var _item = this.mate.item;
-          var pts = [_item.x += dx, _item.y += dy];
+          var itm = this.mate.item;
+          var pts = [itm.x += dx, itm.y += dy];
           replacePathSeg(this.mate.type, this.mate.index, pts); // Has no grip, so does not need 'updating'?
         }
 
@@ -5809,7 +5834,8 @@
       this.elem = elem;
       this.segs = [];
       this.selected_pts = [];
-      path = this;
+      path = this; // eslint-disable-line consistent-this
+
       this.init();
     }
     /**
@@ -5868,7 +5894,7 @@
             seg.mate = segs[startI];
             seg.addGrip();
 
-            if (this.first_seg == null) {
+            if (isNullish(this.first_seg)) {
               this.first_seg = seg;
             }
           } else if (!nextSeg) {
@@ -5905,7 +5931,7 @@
       * @callback module:path.PathEachSegCallback
       * @this module:path.Segment
       * @param {Integer} i The index of the seg being iterated
-      * @returns {boolean} Will stop execution of `eachSeg` if returns `false`
+      * @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`
       */
 
       /**
@@ -6001,8 +6027,8 @@
         } else if (!seg.prev) {
           // First node of open path, make next point the M
           // const {item} = seg;
-          var _pt2 = [next.item.x, next.item.y];
-          replacePathSeg(2, seg.next.index, _pt2);
+          var _pt = [next.item.x, next.item.y];
+          replacePathSeg(2, seg.next.index, _pt);
           list.removeItem(index);
         } else {
           list.removeItem(index);
@@ -6010,34 +6036,6 @@
       }
       /**
       * @param {Integer} index
-      * @returns {boolean}
-      */
-
-    }, {
-      key: "subpathIsClosed",
-      value: function subpathIsClosed(index) {
-        var closed = false; // Check if subpath is already open
-
-        path.eachSeg(function (i) {
-          if (i <= index) {
-            return true;
-          }
-
-          if (this.type === 2) {
-            // Found M first, so open
-            return false;
-          }
-
-          if (this.type === 1) {
-            // Found Z first, so closed
-            closed = true;
-            return false;
-          }
-        });
-        return closed;
-      }
-      /**
-      * @param {Integer} index
       * @returns {undefined}
       */
 
@@ -6218,7 +6216,7 @@
       value: function selectPt(pt, ctrlNum) {
         this.clearSelection();
 
-        if (pt == null) {
+        if (isNullish(pt)) {
           this.eachSeg(function (i) {
             // 'this' is the segment here.
             if (this.prev) {
@@ -6318,7 +6316,7 @@
           grips[i] = _seg2.ptgrip;
         }
 
-        var closedSubpath = this.subpathIsClosed(this.selected_pts[0]);
+        var closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);
         editorContext_.addPtsToSelection({
           grips: grips,
           closedSubpath: closedSubpath
@@ -6329,11 +6327,40 @@
     return Path;
   }();
   /**
+  * @param {Integer} index
+  * @returns {boolean}
+  */
+
+  Path.subpathIsClosed = function (index) {
+    var clsd = false; // Check if subpath is already open
+
+    path.eachSeg(function (i) {
+      if (i <= index) {
+        return true;
+      }
+
+      if (this.type === 2) {
+        // Found M first, so open
+        return false;
+      }
+
+      if (this.type === 1) {
+        // Found Z first, so closed
+        clsd = true;
+        return false;
+      }
+
+      return true;
+    });
+    return clsd;
+  };
+  /**
   * @function module:path.getPath_
   * @param {SVGPathElement} elem
   * @returns {module:path.Path}
   */
 
+
   var getPath_ = function getPath_(elem) {
     var p = pathData[elem.id];
 
@@ -6426,7 +6453,7 @@
       var rvals = getRotVals(seg.x, seg.y),
           points = [rvals.x, rvals.y];
 
-      if (seg.x1 != null && seg.x2 != null) {
+      if (!isNullish(seg.x1) && !isNullish(seg.x2)) {
         var cVals1 = getRotVals(seg.x1, seg.y1);
         var cVals2 = getRotVals(seg.x2, seg.y2);
         points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);
@@ -6514,21 +6541,21 @@
    * Convert a path to one with only absolute or relative values.
    * @todo move to pathActions.js
    * @function module:path.convertPath
-   * @param {SVGPathElement} path - the path to convert
+   * @param {SVGPathElement} pth - the path to convert
    * @param {boolean} toRel - true of convert to relative
    * @returns {string}
    */
 
-  var convertPath = function convertPath(path, toRel) {
-    var segList = path.pathSegList;
-    var len = segList.numberOfItems;
+  var convertPath = function convertPath(pth, toRel) {
+    var pathSegList = pth.pathSegList;
+    var len = pathSegList.numberOfItems;
     var curx = 0,
         cury = 0;
     var d = '';
     var lastM = null;
 
     for (var i = 0; i < len; ++i) {
-      var seg = segList.getItem(i); // if these properties are not in the segment, set them to zero
+      var seg = pathSegList.getItem(i); // if these properties are not in the segment, set them to zero
 
       var x = seg.x || 0,
           y = seg.y || 0,
@@ -6861,7 +6888,7 @@
         * @param {Element} mouseTarget
         * @param {Float} startX
         * @param {Float} startY
-        * @returns {undefined}
+        * @returns {boolean|undefined}
         */
         mouseDown: function mouseDown(evt, mouseTarget, startX, startY) {
           var id;
@@ -7005,7 +7032,7 @@
                 // Checks if current target or parents are #svgcontent
                 if (!$$1.contains(editorContext_.getContainer(), editorContext_.getMouseTarget(evt))) {
                   // Clicked outside canvas, so don't make point
-                  console.log('Clicked outside canvas');
+                  // console.log('Clicked outside canvas');
                   return false;
                 }
 
@@ -7045,12 +7072,12 @@
 
             }
 
-            return;
+            return undefined;
           } // TODO: Make sure currentPath isn't null at this point
 
 
           if (!path) {
-            return;
+            return undefined;
           }
 
           path.storeD();
@@ -7059,7 +7086,7 @@
 
           if (id.substr(0, 14) === 'pathpointgrip_') {
             // Select this point
-            curPt = path.cur_pt = parseInt(id.substr(14), 10);
+            curPt = path.cur_pt = parseInt(id.substr(14));
             path.dragging = [startX, startY];
             var seg = path.segs[curPt]; // only clear selection if shift is not pressed (otherwise, add
             // node to selection)
@@ -7087,7 +7114,7 @@
           if (!path.dragging) {
             var rubberBox = editorContext_.getRubberBox();
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = editorContext_.setRubberBox(editorContext_.selectorManager.getRubberBandBox());
             }
 
@@ -7101,6 +7128,8 @@
               display: 'inline'
             }, 100);
           }
+
+          return undefined;
         },
 
         /**
@@ -7211,7 +7240,7 @@
           } else {
             path.selected_pts = [];
             path.eachSeg(function (i) {
-              var seg = this;
+              var seg = this; // eslint-disable-line consistent-this
 
               if (!seg.next && !seg.prev) {
                 return;
@@ -7237,12 +7266,19 @@
           }
         },
 
+        /**
+         * @typedef module:path.keepElement
+         * @type {PlainObject}
+         * @property {boolean} keep
+         * @property {Element} element
+         */
+
         /**
         * @param {Event} evt
         * @param {Element} element
         * @param {Float} mouseX
         * @param {Float} mouseY
-        * @returns {undefined}
+        * @returns {module:path.keepElement|undefined}
         */
         mouseUp: function mouseUp(evt, element, mouseX, mouseY) {
           var drawnPath = editorContext_.getDrawnPath(); // Create mode
@@ -7291,6 +7327,7 @@
           }
 
           hasMoved = false;
+          return undefined;
         },
 
         /**
@@ -7369,9 +7406,9 @@
             return;
           }
 
-          var angle = getRotationAngle(elem);
+          var angl = getRotationAngle(elem);
 
-          if (angle === 0) {
+          if (angl === 0) {
             return;
           }
 
@@ -7421,7 +7458,7 @@
         * @returns {false|undefined}
         */
         resetOrientation: function resetOrientation(pth) {
-          if (pth == null || pth.nodeName !== 'path') {
+          if (isNullish(pth) || pth.nodeName !== 'path') {
             return false;
           }
 
@@ -7470,6 +7507,7 @@
           }
 
           reorientGrads(pth, m);
+          return undefined;
         },
 
         /**
@@ -7568,9 +7606,11 @@
               openPt = false;
               return false;
             }
+
+            return true;
           });
 
-          if (openPt == null) {
+          if (isNullish(openPt)) {
             // Single path, so close last seg
             openPt = path.segs.length - 1;
           }
@@ -7818,7 +7858,7 @@
     );
   }(); // end pathActions
 
-  var $$2 = jqPluginSVG(jQuery); // String used to encode base64.
+  var $$2 = jQueryPluginSVG(jQuery); // String used to encode base64.
 
   var KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; // Much faster than running getBBox() every time
 
@@ -7938,7 +7978,7 @@
   * @returns {string} Base64 output
   */
 
-  var encode64 = function encode64(input) {
+  function encode64(input) {
     // base64 strings are 4/3 larger than the original string
     input = encodeUTF8(input); // convert non-ASCII characters
     // input = convertToXMLReferences(input);
@@ -7947,8 +7987,7 @@
       return window.btoa(input); // Use native if available
     }
 
-    var output = [];
-    output.length = Math.floor((input.length + 2) / 3) * 4;
+    var output = new Array(Math.floor((input.length + 2) / 3) * 4);
     var i = 0,
         p = 0;
 
@@ -7956,13 +7995,17 @@
       var chr1 = input.charCodeAt(i++);
       var chr2 = input.charCodeAt(i++);
       var chr3 = input.charCodeAt(i++);
+      /* eslint-disable no-bitwise */
+
       var enc1 = chr1 >> 2;
       var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
       var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
       var enc4 = chr3 & 63;
+      /* eslint-enable no-bitwise */
 
       if (isNaN(chr2)) {
-        enc3 = enc4 = 64;
+        enc3 = 64;
+        enc4 = 64;
       } else if (isNaN(chr3)) {
         enc4 = 64;
       }
@@ -7974,7 +8017,7 @@
     } while (i < input.length);
 
     return output.join('');
-  };
+  }
   /**
   * Converts a string from base64.
   * @function module:utilities.decode64
@@ -7982,7 +8025,7 @@
   * @returns {string} Decoded output
   */
 
-  var decode64 = function decode64(input) {
+  function decode64(input) {
     if (window.atob) {
       return decodeUTF8(window.atob(input));
     } // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
@@ -7997,31 +8040,35 @@
       var enc2 = KEYSTR.indexOf(input.charAt(i++));
       var enc3 = KEYSTR.indexOf(input.charAt(i++));
       var enc4 = KEYSTR.indexOf(input.charAt(i++));
+      /* eslint-disable no-bitwise */
+
       var chr1 = enc1 << 2 | enc2 >> 4;
       var chr2 = (enc2 & 15) << 4 | enc3 >> 2;
       var chr3 = (enc3 & 3) << 6 | enc4;
+      /* eslint-enable no-bitwise */
+
       output += String.fromCharCode(chr1);
 
       if (enc3 !== 64) {
-        output = output + String.fromCharCode(chr2);
+        output += String.fromCharCode(chr2);
       }
 
       if (enc4 !== 64) {
-        output = output + String.fromCharCode(chr3);
+        output += String.fromCharCode(chr3);
       }
     } while (i < input.length);
 
     return decodeUTF8(output);
-  };
+  }
   /**
   * @function module:utilities.decodeUTF8
   * @param {string} argString
   * @returns {string}
   */
 
-  var decodeUTF8 = function decodeUTF8(argString) {
+  function decodeUTF8(argString) {
     return decodeURIComponent(escape(argString));
-  }; // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
+  } // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
 
   /**
   * @function module:utilities.encodeUTF8
@@ -8230,6 +8277,7 @@
   */
 
   var getHref = function getHref(elem) {
+    // eslint-disable-line import/no-mutable-exports
     return elem.getAttributeNS(NS.XLINK, 'href');
   };
   /**
@@ -8241,6 +8289,7 @@
   */
 
   var setHref = function setHref(elem, val) {
+    // eslint-disable-line import/no-mutable-exports
     elem.setAttributeNS(NS.XLINK, 'xlink:href', val);
   };
   /**
@@ -8283,6 +8332,12 @@
     var start = seglist.getItem(0);
     var P0 = [start.x, start.y];
 
+    var getCalc = function getCalc(j, P1, P2, P3) {
+      return function (t) {
+        return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
+      };
+    };
+
     for (var i = 0; i < tot; i++) {
       var seg = seglist.getItem(i);
 
@@ -8295,61 +8350,50 @@
       bounds[1].push(P0[1]);
 
       if (seg.x1) {
-        (function () {
-          var P1 = [seg.x1, seg.y1],
-              P2 = [seg.x2, seg.y2],
-              P3 = [seg.x, seg.y];
+        var P1 = [seg.x1, seg.y1],
+            P2 = [seg.x2, seg.y2],
+            P3 = [seg.x, seg.y];
 
-          var _loop = function _loop(j) {
-            var calc = function calc(t) {
-              return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
-            };
+        for (var j = 0; j < 2; j++) {
+          var calc = getCalc(j, P1, P2, P3);
+          var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
+          var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
+          var c = 3 * P1[j] - 3 * P0[j];
 
-            var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
-            var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
-            var c = 3 * P1[j] - 3 * P0[j];
-
-            if (a === 0) {
-              if (b === 0) {
-                return "continue";
-              }
-
-              var t = -c / b;
-
-              if (t > 0 && t < 1) {
-                bounds[j].push(calc(t));
-              }
-
-              return "continue";
+          if (a === 0) {
+            if (b === 0) {
+              continue;
             }
 
-            var b2ac = Math.pow(b, 2) - 4 * c * a;
+            var t = -c / b;
 
-            if (b2ac < 0) {
-              return "continue";
+            if (t > 0 && t < 1) {
+              bounds[j].push(calc(t));
             }
 
-            var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
-
-            if (t1 > 0 && t1 < 1) {
-              bounds[j].push(calc(t1));
-            }
-
-            var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
-
-            if (t2 > 0 && t2 < 1) {
-              bounds[j].push(calc(t2));
-            }
-          };
-
-          for (var j = 0; j < 2; j++) {
-            var _ret = _loop(j);
-
-            if (_ret === "continue") continue;
+            continue;
           }
 
-          P0 = P3;
-        })();
+          var b2ac = Math.pow(b, 2) - 4 * c * a;
+
+          if (b2ac < 0) {
+            continue;
+          }
+
+          var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
+
+          if (t1 > 0 && t1 < 1) {
+            bounds[j].push(calc(t1));
+          }
+
+          var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
+
+          if (t2 > 0 && t2 < 1) {
+            bounds[j].push(calc(t2));
+          }
+        }
+
+        P0 = P3;
       } else {
         bounds[0].push(seg.x);
         bounds[1].push(seg.y);
@@ -8448,10 +8492,8 @@
 
           ret = selected.getBBox();
           selected.textContent = '';
-        } else {
-          if (selected.getBBox) {
-            ret = selected.getBBox();
-          }
+        } else if (selected.getBBox) {
+          ret = selected.getBBox();
         }
 
         break;
@@ -8459,10 +8501,8 @@
       case 'path':
         if (!supportsPathBBox()) {
           ret = getPathBBox(selected);
-        } else {
-          if (selected.getBBox) {
-            ret = selected.getBBox();
-          }
+        } else if (selected.getBBox) {
+          ret = selected.getBBox();
         }
 
         break;
@@ -8577,21 +8617,24 @@
     switch (elem.tagName) {
       case 'ellipse':
       case 'circle':
-        a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
-        var _a = a,
-            cx = _a.cx,
-            cy = _a.cy;
-        var _a2 = a;
-        rx = _a2.rx;
-        ry = _a2.ry;
+        {
+          a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
+          var _a = a,
+              cx = _a.cx,
+              cy = _a.cy;
+          var _a2 = a;
+          rx = _a2.rx;
+          ry = _a2.ry;
 
-        if (elem.tagName === 'circle') {
-          rx = ry = $$2(elem).attr('r');
+          if (elem.tagName === 'circle') {
+            ry = $$2(elem).attr('r');
+            rx = ry;
+          }
+
+          d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
+          break;
         }
 
-        d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
-        break;
-
       case 'path':
         d = elem.getAttribute('d');
         break;
@@ -8610,25 +8653,27 @@
         break;
 
       case 'rect':
-        var r = $$2(elem).attr(['rx', 'ry']);
-        rx = r.rx;
-        ry = r.ry;
-        var b = elem.getBBox();
-        var x = b.x,
-            y = b.y,
-            w = b.width,
-            h = b.height;
-        num = 4 - num; // Why? Because!
+        {
+          var r = $$2(elem).attr(['rx', 'ry']);
+          rx = r.rx;
+          ry = r.ry;
+          var b = elem.getBBox();
+          var x = b.x,
+              y = b.y,
+              w = b.width,
+              h = b.height;
+          num = 4 - num; // Why? Because!
 
-        if (!rx && !ry) {
-          // Regular rect
-          d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
-        } else {
-          d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+          if (!rx && !ry) {
+            // Regular rect
+            d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
+          } else {
+            d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+          }
+
+          break;
         }
 
-        break;
-
       default:
         break;
     }
@@ -8675,12 +8720,12 @@
       path$$1.setAttribute('transform', eltrans);
     }
 
-    var parent = elem.parentNode;
+    var parentNode = elem.parentNode;
 
     if (elem.nextSibling) {
       elem.before(path$$1);
     } else {
-      parent.append(path$$1);
+      parentNode.append(path$$1);
     }
 
     var d = getPathDFromElement(elem);
@@ -8712,13 +8757,13 @@
   * @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.
   * @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}
   * @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}
-  * @param {module:history} history - see history module
+  * @param {module:history} hstry - see history module
   * @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}
   * @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.
   */
 
-  var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory) {
-    var batchCmd = new history.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
+  var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory) {
+    var batchCmd = new hstry.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
 
     attrs = $$2.extend({}, attrs, getExtraAttributesForConvertToPath(elem));
     var path$$1 = addSVGElementFromJson({
@@ -8732,12 +8777,12 @@
     }
 
     var id = elem.id;
-    var parent = elem.parentNode;
+    var parentNode = elem.parentNode;
 
     if (elem.nextSibling) {
       elem.before(path$$1);
     } else {
-      parent.append(path$$1);
+      parentNode.append(path$$1);
     }
 
     var d = getPathDFromElement(elem);
@@ -8755,8 +8800,8 @@
       }
 
       var nextSibling = elem.nextSibling;
-      batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));
-      batchCmd.addSubCommand(new history.InsertElementCommand(path$$1));
+      batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));
+      batchCmd.addSubCommand(new hstry.InsertElementCommand(path$$1));
       clearSelection();
       elem.remove();
       path$$1.setAttribute('id', id);
@@ -8787,15 +8832,15 @@
   * getBBox then apply the angle and any transforms.
   *
   * @param {Float} angle - The rotation angle in degrees
-  * @param {boolean} hasMatrixTransform - True if there is a matrix transform
+  * @param {boolean} hasAMatrixTransform - True if there is a matrix transform
   * @returns {boolean} True if the bbox can be optimized.
   */
 
-  function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixTransform$$1) {
+  function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasAMatrixTransform) {
     var angleModulo90 = angle % 90;
     var closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;
     var closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;
-    return hasMatrixTransform$$1 || !(closeTo0 || closeTo90);
+    return hasAMatrixTransform || !(closeTo0 || closeTo90);
   }
   /**
   * Get bounding box that includes any transforms.
@@ -8830,14 +8875,16 @@
         var elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];
 
         if (elemNames.includes(elem.tagName)) {
-          bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          bb = goodBb;
         } else if (elem.tagName === 'rect') {
           // Look for radius
           var rx = elem.getAttribute('rx');
           var ry = elem.getAttribute('ry');
 
           if (rx || ry) {
-            bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+            goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+            bb = goodBb;
           }
         }
       }
@@ -8863,7 +8910,13 @@
     }
 
     return bb;
-  }; // TODO: This is problematic with large stroke-width and, for example, a single horizontal line. The calculated BBox extends way beyond left and right sides.
+  };
+  /**
+   * @param {Element} elem
+   * @returns {Float}
+   * @todo This is problematic with large stroke-width and, for example, a single
+   * horizontal line. The calculated BBox extends way beyond left and right sides.
+   */
 
   function getStrokeOffsetForBBox(elem) {
     var sw = elem.getAttribute('stroke-width');
@@ -8951,17 +9004,17 @@
   * Note that 0-opacity, off-screen etc elements are still considered "visible"
   * for this function.
   * @function module:utilities.getVisibleElements
-  * @param {Element} parent - The parent DOM element to search within
+  * @param {Element} parentElement - The parent DOM element to search within
   * @returns {Element[]} All "visible" elements.
   */
 
-  var getVisibleElements = function getVisibleElements(parent) {
-    if (!parent) {
-      parent = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
+  var getVisibleElements = function getVisibleElements(parentElement) {
+    if (!parentElement) {
+      parentElement = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
     }
 
     var contentElems = [];
-    $$2(parent).children().each(function (i, elem) {
+    $$2(parentElement).children().each(function (i, elem) {
       if (elem.getBBox) {
         contentElems.push(elem);
       }
@@ -9017,6 +9070,7 @@
   */
 
   var getRotationAngle = function getRotationAngle(elem, toRad) {
+    // eslint-disable-line import/no-mutable-exports
     var selected = elem || editorContext_$1.getSelectedElements()[0]; // find the rotation transform (if any) and set it
 
     var tlist = getTransformList(selected);
@@ -9036,7 +9090,7 @@
   * Get a DOM element by ID within the SVG root element.
   * @function module:utilities.getElem
   * @param {string} id - String with the element's new ID
-  * @returns {Element}
+  * @returns {?Element}
   */
 
   var getElem = supportsSelectors() ? function (id) {
@@ -9108,13 +9162,15 @@
       delete defaults.ry;
     }
 
-    for (var attr in defaults) {
-      var val = defaults[attr];
+    Object.entries(defaults).forEach(function (_ref4) {
+      var _ref5 = _slicedToArray(_ref4, 2),
+          attr = _ref5[0],
+          val = _ref5[1];
 
       if (element.getAttribute(attr) === String(val)) {
         element.removeAttribute(attr);
       }
-    }
+    });
   };
   /**
   * Round value to for snapping.
@@ -9217,6 +9273,15 @@
 
     return newEl;
   };
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+  var isNullish = function isNullish(val) {
+    return val === null || val === undefined;
+  };
 
   /* globals jQuery */
 
@@ -9270,9 +9335,9 @@
 
 
   var injectExtendedContextMenuItemsIntoDom = function injectExtendedContextMenuItemsIntoDom() {
-    for (var menuItem in contextMenuExtensions) {
-      injectExtendedContextMenuItemIntoDom(contextMenuExtensions[menuItem]);
-    }
+    Object.values(contextMenuExtensions).forEach(function (menuItem) {
+      injectExtendedContextMenuItemIntoDom(menuItem);
+    });
   };
 
   // MIT License
@@ -9281,12 +9346,25 @@
   /**
    * @module importModule
    */
+
+  /**
+   * Converts a possible relative URL into an absolute one.
+   * @param {string} url
+   * @returns {string}
+   */
   function toAbsoluteURL(url) {
     var a = document.createElement('a');
     a.setAttribute('href', url); // <a href="hoge.html">
 
     return a.cloneNode(false).href; // -> "http://example.com/hoge.html"
   }
+  /**
+   * Add any of the whitelisted attributes to the script tag.
+   * @param {HTMLScriptElement} script
+   * @param {PlainObject.<string, string>} atts
+   * @returns {undefined}
+   */
+
 
   function addScriptAtts(script, atts) {
     ['id', 'class', 'type'].forEach(function (prop) {
@@ -9304,84 +9382,73 @@
 
   /**
   * @function module:importModule.importSetGlobalDefault
-  * @param {string} url
+  * @param {string|string[]} url
   * @param {module:importModule.ImportConfig} config
-  * @returns {*} The return depends on the export of the targeted module.
+  * @returns {Promise} The value to which it resolves depends on the export of the targeted module.
   */
 
 
-  function importSetGlobalDefault(_x, _x2) {
-    return _importSetGlobalDefault.apply(this, arguments);
+  function importSetGlobalDefault(url, config) {
+    return importSetGlobal(url, _extends({}, config, {
+      returnDefault: true
+    }));
   }
   /**
   * @function module:importModule.importSetGlobal
-  * @param {string} url
+  * @param {string|string[]} url
   * @param {module:importModule.ImportConfig} config
-  * @returns {ArbitraryModule|*} The return depends on the export of the targeted module.
+  * @returns {Promise} The promise resolves to either an `ArbitraryModule` or
+  *   any other value depends on the export of the targeted module.
   */
 
-  function _importSetGlobalDefault() {
-    _importSetGlobalDefault = _asyncToGenerator(
+  function importSetGlobal(_x, _x2) {
+    return _importSetGlobal.apply(this, arguments);
+  }
+  /**
+   *
+   * @author Brett Zamir (other items are from `dynamic-import-polyfill`)
+   * @param {string|string[]} url
+   * @param {PlainObject} [atts={}]
+   * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a
+   *   script loading error
+   */
+
+  function _importSetGlobal() {
+    _importSetGlobal = _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee(url, config) {
+    regeneratorRuntime.mark(function _callee(url, _ref) {
+      var glob, returnDefault, modularVersion;
       return regeneratorRuntime.wrap(function _callee$(_context) {
         while (1) {
           switch (_context.prev = _context.next) {
             case 0:
-              return _context.abrupt("return", importSetGlobal(url, _extends({}, config, {
-                returnDefault: true
-              })));
+              glob = _ref.global, returnDefault = _ref.returnDefault;
+              // Todo: Replace calls to this function with `import()` when supported
+              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
 
-            case 1:
+              if (!modularVersion) {
+                _context.next = 4;
+                break;
+              }
+
+              return _context.abrupt("return", importModule(url, undefined, {
+                returnDefault: returnDefault
+              }));
+
+            case 4:
+              _context.next = 6;
+              return importScript(url);
+
+            case 6:
+              return _context.abrupt("return", window[glob]);
+
+            case 7:
             case "end":
               return _context.stop();
           }
         }
       }, _callee, this);
     }));
-    return _importSetGlobalDefault.apply(this, arguments);
-  }
-
-  function importSetGlobal(_x3, _x4) {
-    return _importSetGlobal.apply(this, arguments);
-  } // Addition by Brett
-
-  function _importSetGlobal() {
-    _importSetGlobal = _asyncToGenerator(
-    /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee2(url, _ref) {
-      var global, returnDefault, modularVersion;
-      return regeneratorRuntime.wrap(function _callee2$(_context2) {
-        while (1) {
-          switch (_context2.prev = _context2.next) {
-            case 0:
-              global = _ref.global, returnDefault = _ref.returnDefault;
-              // Todo: Replace calls to this function with `import()` when supported
-              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
-
-              if (!modularVersion) {
-                _context2.next = 4;
-                break;
-              }
-
-              return _context2.abrupt("return", importModule(url, undefined, {
-                returnDefault: returnDefault
-              }));
-
-            case 4:
-              _context2.next = 6;
-              return importScript(url);
-
-            case 6:
-              return _context2.abrupt("return", window[global]);
-
-            case 7:
-            case "end":
-              return _context2.stop();
-          }
-        }
-      }, _callee2, this);
-    }));
     return _importSetGlobal.apply(this, arguments);
   }
 
@@ -9395,6 +9462,7 @@
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var script = document.createElement('script');
 
       var destructor = function destructor() {
@@ -9421,6 +9489,16 @@
       document.head.append(script);
     });
   }
+  /**
+   *
+   * @param {string|string[]} url
+   * @param {PlainObject} [atts={}]
+   * @param {PlainObject} opts
+   * @param {boolean} [opts.returnDefault=false} = {}]
+   * @returns {Promise} Resolves to value of loading module or rejects with
+   *   `Error` upon a script loading error.
+   */
+
   function importModule(url) {
     var atts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
 
@@ -9435,6 +9513,7 @@
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var vector = '$importModule$' + Math.random().toString(32).slice(2);
       var script = document.createElement('script');
 
@@ -9472,6 +9551,202 @@
     });
   }
 
+  /**
+   * @module jQueryPluginDBox
+   */
+
+  /**
+  * @param {external:jQuery} $
+  * @param {PlainObject} [strings]
+  * @param {PlainObject} [strings.ok]
+  * @param {PlainObject} [strings.cancel]
+  * @returns {external:jQuery}
+  */
+  function jQueryPluginDBox($) {
+    var strings = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+      ok: 'Ok',
+      cancel: 'Cancel'
+    };
+    // This sets up alternative dialog boxes. They mostly work the same way as
+    // their UI counterparts, expect instead of returning the result, a callback
+    // needs to be included that returns the result as its first parameter.
+    // In the future we may want to add additional types of dialog boxes, since
+    // they should be easy to handle this way.
+    $('#dialog_container').draggable({
+      cancel: '#dialog_content, #dialog_buttons *',
+      containment: 'window'
+    }).css('position', 'absolute');
+    var box = $('#dialog_box'),
+        btnHolder = $('#dialog_buttons'),
+        dialogContent = $('#dialog_content');
+    /**
+    * Resolves to `false` (if cancelled), for prompts and selects
+    * without checkboxes, it resolves to the value of the form control. For other
+    * types without checkboxes, it resolves to `true`. For checkboxes, it resolves
+    * to an object with the `response` key containing the same value as the previous
+    * mentioned (string or `true`) and a `checked` (boolean) property.
+    * @typedef {Promise} module:jQueryPluginDBox.PromiseResult
+    */
+
+    /**
+    * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption
+    * @property {string} text
+    * @property {string} value
+    */
+
+    /**
+    * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo
+    * @property {string} label Label for the checkbox
+    * @property {string} value Value of the checkbox
+    * @property {string} tooltip Tooltip on the checkbox label
+    * @property {boolean} checked Whether the checkbox is checked by default
+    */
+
+    /**
+     * Triggered upon a change of value for the select pull-down.
+     * @callback module:jQueryPluginDBox.SelectChangeListener
+     * @returns {undefined}
+     */
+
+    /**
+    * @param {"alert"|"prompt"|"select"|"process"} type
+    * @param {string} msg
+    * @param {string} [defaultVal]
+    * @param {module:jQueryPluginDBox.SelectOption[]} [opts]
+    * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]
+    * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+    function dbox(type, msg, defaultVal, opts, changeListener, checkbox) {
+      dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
+      btnHolder.empty();
+      var ok = $('<input type="button" value="' + strings.ok + '">').appendTo(btnHolder);
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        if (type !== 'alert') {
+          $('<input type="button" value="' + strings.cancel + '">').appendTo(btnHolder).click(function () {
+            box.hide();
+            resolve(false);
+          });
+        }
+
+        var ctrl, chkbx;
+
+        if (type === 'prompt') {
+          ctrl = $('<input type="text">').prependTo(btnHolder);
+          ctrl.val(defaultVal || '');
+          ctrl.bind('keydown', 'return', function () {
+            ok.click();
+          });
+        } else if (type === 'select') {
+          var div = $('<div style="text-align:center;">');
+          ctrl = $('<select>').appendTo(div);
+
+          if (checkbox) {
+            var label = $('<label>').text(checkbox.label);
+            chkbx = $('<input type="checkbox">').appendTo(label);
+            chkbx.val(checkbox.value);
+
+            if (checkbox.tooltip) {
+              label.attr('title', checkbox.tooltip);
+            }
+
+            chkbx.prop('checked', Boolean(checkbox.checked));
+            div.append($('<div>').append(label));
+          }
+
+          $.each(opts || [], function (opt, val) {
+            if (_typeof(val) === 'object') {
+              ctrl.append($('<option>').val(val.value).html(val.text));
+            } else {
+              ctrl.append($('<option>').html(val));
+            }
+          });
+          dialogContent.append(div);
+
+          if (defaultVal) {
+            ctrl.val(defaultVal);
+          }
+
+          if (changeListener) {
+            ctrl.bind('change', 'return', changeListener);
+          }
+
+          ctrl.bind('keydown', 'return', function () {
+            ok.click();
+          });
+        } else if (type === 'process') {
+          ok.hide();
+        }
+
+        box.show();
+        ok.click(function () {
+          box.hide();
+          var response = type === 'prompt' || type === 'select' ? ctrl.val() : true;
+
+          if (chkbx) {
+            resolve({
+              response: response,
+              checked: chkbx.prop('checked')
+            });
+            return;
+          }
+
+          resolve(response);
+        }).focus();
+
+        if (type === 'prompt' || type === 'select') {
+          ctrl.focus();
+        }
+      });
+    }
+    /**
+    * @param {string} msg Message to alert
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.alert = function (msg) {
+      return dbox('alert', msg);
+    };
+    /**
+    * @param {string} msg Message for which to ask confirmation
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.confirm = function (msg) {
+      return dbox('confirm', msg);
+    };
+    /**
+    * @param {string} msg Message to indicate upon cancelable indicator
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.process_cancel = function (msg) {
+      return dbox('process', msg);
+    };
+    /**
+    * @param {string} msg Message to accompany the prompt
+    * @param {string} [defaultText=''] The default text to show for the prompt
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.prompt = function (msg) {
+      var defaultText = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
+      return dbox('prompt', msg, defaultText);
+    };
+
+    $.select = function (msg, opts, changeListener, txt, checkbox) {
+      return dbox('select', msg, txt, opts, changeListener, checkbox);
+    };
+
+    return $;
+  }
+
   var $$4 = jQuery;
   /**
    * This class encapsulates the concept of a layer in the drawing. It can be constructed with
@@ -9600,7 +9875,7 @@
       value: function getOpacity() {
         var opacity = this.group_.getAttribute('opacity');
 
-        if (opacity === null || opacity === undefined) {
+        if (isNullish(opacity)) {
           return 1;
         }
 
@@ -9685,7 +9960,6 @@
       }
       /**
        * Remove this layer's group from the DOM. No more functions on group can be called after this.
-       * @param {SVGGElement} children - The children to append to this layer.
        * @returns {SVGGElement} The layer SVG group that was just removed.
        */
 
@@ -9722,7 +9996,7 @@
   function addLayerClass(elem) {
     var classes = elem.getAttribute('class');
 
-    if (classes === null || classes === undefined || !classes.length) {
+    if (isNullish(classes) || !classes.length) {
       elem.setAttribute('class', Layer.CLASS_NAME);
     } else if (!Layer.CLASS_REGEX.test(classes)) {
       elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);
@@ -9812,8 +10086,8 @@
         if (this.currentBatchCommand_) {
           var batchCommand = this.currentBatchCommand_;
           this.batchCommandStack_.pop();
-          var length = this.batchCommandStack_.length;
-          this.currentBatchCommand_ = length ? this.batchCommandStack_[length - 1] : null;
+          var len = this.batchCommandStack_.length;
+          this.currentBatchCommand_ = len ? this.batchCommandStack_[len - 1] : null;
           this.addCommand_(batchCommand);
         }
 
@@ -9896,7 +10170,7 @@
        * Private function to add a command to the history or current batch command.
        * @private
        * @param {Command} cmd
-       * @returns {module:history.HistoryRecordingService}
+       * @returns {module:history.HistoryRecordingService|undefined}
        */
 
     }, {
@@ -9911,6 +10185,8 @@
         } else {
           this.undoManager_.addCommandToHistory(cmd);
         }
+
+        return undefined;
       }
     }]);
 
@@ -10049,7 +10325,7 @@
       var n = this.svgElem_.getAttributeNS(NS.SE, 'nonce'); // If already set in the DOM, use the nonce throughout the document
       // else, if randomizeIds(true) has been called, create and set the nonce.
 
-      if (!!n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
+      if (n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
         this.nonce_ = n;
       } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {
         this.setNonce(Math.floor(Math.random() * 100001));
@@ -10184,7 +10460,7 @@
         } // extract the obj_num of this id
 
 
-        var num = parseInt(id.substr(front.length), 10); // if we didn't get a positive number or we already released this number
+        var num = parseInt(id.substr(front.length)); // if we didn't get a positive number or we already released this number
         // then return false.
 
         if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {
@@ -10686,10 +10962,10 @@
     }, {
       key: "copyElem",
       value: function copyElem$$1(el) {
-        var self = this;
+        var that = this;
 
         var getNextIdClosure = function getNextIdClosure() {
-          return self.getNextId();
+          return that.getNextId();
         };
 
         return copyElem(el, getNextIdClosure);
@@ -11086,26 +11362,6 @@
     canvas_.call('contextset', canvas_.getCurrentGroup());
   };
 
-  var draw = /*#__PURE__*/Object.freeze({
-    Drawing: Drawing,
-    randomizeIds: randomizeIds,
-    init: init$3,
-    identifyLayers: identifyLayers,
-    createLayer: createLayer,
-    cloneLayer: cloneLayer,
-    deleteCurrentLayer: deleteCurrentLayer,
-    setCurrentLayer: setCurrentLayer,
-    renameCurrentLayer: renameCurrentLayer,
-    setCurrentLayerPosition: setCurrentLayerPosition,
-    setLayerVisibility: setLayerVisibility,
-    moveSelectedToLayer: moveSelectedToLayer,
-    mergeLayer: mergeLayer,
-    mergeAllLayers: mergeAllLayers,
-    leaveContext: leaveContext,
-    setContext: setContext,
-    Layer: Layer
-  });
-
   var REVERSE_NS = getReverseNS(); // this defines which elements and attributes that we support
 
   var svgWhiteList_ = {
@@ -11247,7 +11503,7 @@
         var attrNsURI = attr.namespaceURI; // Check that an attribute with the correct localName in the correct namespace is on
         // our whitelist or is a namespace declaration for one of our allowed namespaces
 
-        if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
+        if (!({}.hasOwnProperty.call(allowedAttrsNS, attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
           // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.
           // Bypassing the whitelist to allow se: prefixes.
           // Is there a more appropriate way to do this?
@@ -11264,9 +11520,11 @@
             case 'transform':
             case 'gradientTransform':
             case 'patternTransform':
-              var val = attr.value.replace(/(\d)-/g, '$1 -');
-              node.setAttribute(attrName, val);
-              break;
+              {
+                var val = attr.value.replace(/(\d)-/g, '$1 -');
+                node.setAttribute(attrName, val);
+                break;
+              }
           }
         } // For the style attribute, rewrite it in terms of XML presentational attributes
 
@@ -11362,7 +11620,6 @@
     }
   };
 
-  /* globals jQuery */
   var $$6 = jQuery; // this is how we map paths to our preferred relative segment types
 
   var pathMap$1 = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a', 'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];
@@ -11414,9 +11671,13 @@
         doSnapping = editorContext_$2.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',
         finishUp = function finishUp() {
       if (doSnapping) {
-        for (var o in changes) {
-          changes[o] = snapToGrid(changes[o]);
-        }
+        Object.entries(changes).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              o = _ref2[0],
+              value = _ref2[1];
+
+          changes[o] = snapToGrid(value);
+        });
       }
 
       assignAttributes(selected, changes, 1000, true);
@@ -11730,7 +11991,7 @@
 
               case 10:
                 // absolute elliptical arc (A)
-                dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + +_seg2.largeArcFlag + ' ' + +_seg2.sweepFlag + ' ' + _seg2.x + ',' + _seg2.y + ' ';
+                dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + Number(_seg2.largeArcFlag) + ' ' + Number(_seg2.sweepFlag) + ' ' + _seg2.x + ',' + _seg2.y + ' ';
                 break;
 
               case 17: // relative smooth cubic (s)
@@ -11749,7 +12010,7 @@
   };
 
   /* globals jQuery */
-  var $$7 = jqPluginSVG(jQuery);
+  var $$7 = jQueryPluginSVG(jQuery);
   var context_;
   /**
   * @interface module:recalculate.EditorContext
@@ -11806,7 +12067,7 @@
   */
 
   var recalculateDimensions = function recalculateDimensions(selected) {
-    if (selected == null) {
+    if (isNullish(selected)) {
       return null;
     } // Firefox Issue - 1081
 
@@ -11992,7 +12253,7 @@
     // make a copy of initial values and include the transform
 
 
-    if (initial == null) {
+    if (isNullish(initial)) {
       initial = $$7.extend(true, {}, changes);
       $$7.each(initial, function (attr, val) {
         initial[attr] = convertToNum(attr, val);
@@ -12598,7 +12859,8 @@
         // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]
 
       } else if (_operation === 3 && _angle) {
-        var _m6 = transformListToTransform(tlist).matrix;
+        var _transformListToTrans = transformListToTransform(tlist),
+            matrix = _transformListToTrans.matrix;
 
         var _roldt = svgroot.createSVGTransform();
 
@@ -12612,9 +12874,9 @@
 
         var _rnewInv = _rnew.matrix.inverse();
 
-        var _mInv2 = _m6.inverse();
+        var _mInv2 = matrix.inverse();
 
-        var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, _m6);
+        var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, matrix);
 
         remapElement(selected, changes, _extrat);
 
@@ -12715,39 +12977,6 @@
         this.selectorGroup.setAttribute('display', 'inline');
       }
       /**
-      * Updates cursors for corner grips on rotation so arrows point the right way.
-      * @param {Float} angle - Current rotation angle in degrees
-      * @returns {undefined}
-      */
-
-    }, {
-      key: "updateGripCursors",
-      value: function updateGripCursors(angle) {
-        var dir;
-        var dirArr = [];
-        var steps = Math.round(angle / 45);
-
-        if (steps < 0) {
-          steps += 8;
-        }
-
-        for (dir in selectorManager_.selectorGrips) {
-          dirArr.push(dir);
-        }
-
-        while (steps > 0) {
-          dirArr.push(dirArr.shift());
-          steps--;
-        }
-
-        var i = 0;
-
-        for (dir in selectorManager_.selectorGrips) {
-          selectorManager_.selectorGrips[dir].setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
-          i++;
-        }
-      }
-      /**
       * Show the resize grips of this selector.
       * @param {boolean} show - Indicates whether grips should be shown or not
       * @returns {undefined}
@@ -12763,7 +12992,7 @@
 
         if (elem && show) {
           this.selectorGroup.append(selectorManager_.selectorGripsGroup);
-          this.updateGripCursors(getRotationAngle(elem));
+          Selector.updateGripCursors(getRotationAngle(elem));
         }
       }
       /**
@@ -12880,13 +13109,14 @@
           e: [nbax + nbaw, nbay + nbah / 2],
           s: [nbax + nbaw / 2, nbay + nbah]
         };
+        Object.entries(this.gripCoords).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              dir = _ref2[0],
+              coords = _ref2[1];
 
-        for (var dir in this.gripCoords) {
-          var coords = this.gripCoords[dir];
           selectedGrips[dir].setAttribute('cx', coords[0]);
           selectedGrips[dir].setAttribute('cy', coords[1]);
-        } // we want to go 20 pixels in the negative transformed y direction, ignoring scale
-
+        }); // we want to go 20 pixels in the negative transformed y direction, ignoring scale
 
         mgr.rotateGripConnector.setAttribute('x1', nbax + nbaw / 2);
         mgr.rotateGripConnector.setAttribute('y1', nbay);
@@ -12900,9 +13130,33 @@
     return Selector;
   }();
   /**
+  * Updates cursors for corner grips on rotation so arrows point the right way.
+  * @param {Float} angle - Current rotation angle in degrees
+  * @returns {undefined}
+  */
+
+  Selector.updateGripCursors = function (angle) {
+    var dirArr = Object.keys(selectorManager_.selectorGrips);
+    var steps = Math.round(angle / 45);
+
+    if (steps < 0) {
+      steps += 8;
+    }
+
+    while (steps > 0) {
+      dirArr.push(dirArr.shift());
+      steps--;
+    }
+
+    Object.values(selectorManager_.selectorGrips).forEach(function (gripElement, i) {
+      gripElement.setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
+    });
+  };
+  /**
   * Manage all selector objects (selection boxes).
   */
 
+
   var SelectorManager =
   /*#__PURE__*/
   function () {
@@ -12942,6 +13196,8 @@
     _createClass(SelectorManager, [{
       key: "initGroup",
       value: function initGroup() {
+        var _this = this;
+
         // remove old selector parent group if it existed
         if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {
           this.selectorParentGroup.remove();
@@ -12966,7 +13222,7 @@
         this.selectors = [];
         this.rubberBandBox = null; // add the corner grips
 
-        for (var dir in this.selectorGrips) {
+        Object.keys(this.selectorGrips).forEach(function (dir) {
           var grip = svgFactory_.createSVGElement({
             element: 'circle',
             attr: {
@@ -12984,9 +13240,8 @@
           });
           $$8.data(grip, 'dir', dir);
           $$8.data(grip, 'type', 'resize');
-          this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);
-        } // add rotator elems
-
+          _this.selectorGrips[dir] = _this.selectorGripsGroup.appendChild(grip);
+        }); // add rotator elems
 
         this.rotateGripConnector = this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({
           element: 'line',
@@ -13059,7 +13314,7 @@
     }, {
       key: "requestSelector",
       value: function requestSelector(elem, bbox) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return null;
         }
 
@@ -13095,7 +13350,7 @@
     }, {
       key: "releaseSelector",
       value: function releaseSelector(elem) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return;
         }
 
@@ -13104,7 +13359,7 @@
 
         if (!sel.locked) {
           // TODO(codedread): Ensure this exists in this module.
-          console.log('WARNING! selector was released but was already unlocked');
+          console.log('WARNING! selector was released but was already unlocked'); // eslint-disable-line no-console
         }
 
         for (var i = 0; i < N; ++i) {
@@ -13213,7 +13468,7 @@
     return selectorManager_;
   };
 
-  var $$9 = jqPluginSVG(jQuery);
+  var $$9 = jQueryPluginSVG(jQuery);
   var MoveElementCommand$1 = MoveElementCommand,
       InsertElementCommand$1 = InsertElementCommand,
       RemoveElementCommand$1 = RemoveElementCommand,
@@ -13225,9 +13480,13 @@
   if (!window.console) {
     window.console = {};
 
-    window.console.log = function (str) {};
+    window.console.log = function (str) {
+      /* */
+    };
 
-    window.console.dir = function (str) {};
+    window.console.dir = function (str) {
+      /* */
+    };
   }
 
   if (window.opera) {
@@ -13235,7 +13494,9 @@
       window.opera.postError(str);
     };
 
-    window.console.dir = function (str) {};
+    window.console.dir = function (str) {
+      /* */
+    };
   }
   /**
   * The main SvgCanvas class that manages all SVG-related functions.
@@ -13289,7 +13550,8 @@
 
 
     var dimensions = curConfig.dimensions;
-    var canvas = this; // "document" element associated with the container (same as window.document using default svg-editor.js)
+    var canvas = this; // eslint-disable-line consistent-this
+    // "document" element associated with the container (same as window.document using default svg-editor.js)
     // NOTE: This is not actually a SVG document, but an HTML document.
 
     var svgdoc = container.ownerDocument; // This is a container for the document being edited, not the document itself.
@@ -13665,10 +13927,8 @@
               if (isApply) {
                 restoreRefElems(cmd.elem);
               }
-            } else {
-              if (!isApply) {
-                restoreRefElems(cmd.elem);
-              }
+            } else if (!isApply) {
+              restoreRefElems(cmd.elem);
             }
 
             if (cmd.elem.tagName === 'use') {
@@ -13730,7 +13990,7 @@
 
 
     var round = this.round = function (val) {
-      return parseInt(val * currentZoom, 10) / currentZoom;
+      return parseInt(val * currentZoom) / currentZoom;
     };
 
     init$6(curConfig,
@@ -13780,7 +14040,7 @@
     * @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}
     * @param {"selected"|"changed"|"contextset"|"pointsAdded"|"extension_added"|"extensions_added"|"message"|"transition"|"zoomed"|"updateCanvas"|"zoomDone"|"saved"|"exported"|"exportedPDF"|"setnonce"|"unsetnonce"|"cleared"} ev - String with the event name
     * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.
-    * @returns {undefined}
+    * @returns {module:svgcanvas.EventHandlerReturn|undefined}
     */
 
 
@@ -13788,6 +14048,8 @@
       if (events[ev]) {
         return events[ev](window, arg);
       }
+
+      return undefined;
     };
     /**
     * Clears the selection. The 'selected' handler is then optionally called.
@@ -13800,7 +14062,7 @@
 
     var clearSelection = this.clearSelection = function (noCall) {
       selectedElements.forEach(function (elem) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return;
         }
 
@@ -13829,7 +14091,7 @@
       var j = 0;
 
       while (j < selectedElements.length) {
-        if (selectedElements[j] == null) {
+        if (isNullish(selectedElements[j])) {
           break;
         }
 
@@ -13883,15 +14145,17 @@
 
       selectedElements.sort(function (a, b) {
         if (a && b && a.compareDocumentPosition) {
-          return 3 - (b.compareDocumentPosition(a) & 6);
+          return 3 - (b.compareDocumentPosition(a) & 6); // eslint-disable-line no-bitwise
         }
 
-        if (a == null) {
+        if (isNullish(a)) {
           return 1;
         }
+
+        return 0;
       }); // Make sure first elements are not null
 
-      while (selectedElements[0] == null) {
+      while (isNullish(selectedElements[0])) {
         selectedElements.shift(0);
       }
     };
@@ -13910,7 +14174,7 @@
 
 
     var getMouseTarget = this.getMouseTarget = function (evt) {
-      if (evt == null) {
+      if (isNullish(evt)) {
         return null;
       }
 
@@ -14015,8 +14279,9 @@
       },
 
       /**
-       * @param {boolean} closedSubpath
-       * @param {SVGCircleElement[]} grips
+       * @param {PlainObject} ptsInfo
+       * @param {boolean} ptsInfo.closedSubpath
+       * @param {SVGCircleElement[]} ptsInfo.grips
        * @fires module:svgcanvas.SvgCanvas#event:pointsAdded
        * @fires module:svgcanvas.SvgCanvas#event:selected
        * @returns {undefined}
@@ -14035,8 +14300,9 @@
       },
 
       /**
-       * @param {ChangeElementCommand} cmd
-       * @param {SVGPathElement} elem
+       * @param {PlainObject} changes
+       * @param {ChangeElementCommand} changes.cmd
+       * @param {SVGPathElement} changes.elem
        * @fires module:svgcanvas.SvgCanvas#event:changed
        * @returns {undefined}
        */
@@ -14083,10 +14349,7 @@
     var restoreRefElems = function restoreRefElems(elem) {
       // Look for missing reference elements, restore any found
       var attrs = $$9(elem).attr(refAttrs);
-
-      for (var o in attrs) {
-        var val = attrs[o];
-
+      Object.values(attrs).forEach(function (val) {
         if (val && val.startsWith('url(')) {
           var id = getUrlFromAttr(val).substr(1);
           var ref = getElem(id);
@@ -14096,8 +14359,7 @@
             delete removedElements[id];
           }
         }
-      }
-
+      });
       var childs = elem.getElementsByTagName('*');
 
       if (childs.length) {
@@ -14162,6 +14424,12 @@
     curBBoxes = [],
         // Canvas point for the most recent right click
     lastClickPoint = null;
+
+    this.runExtension = function (name, action, vars) {
+      return this.runExtensions(action, vars, false, function (n) {
+        return n === name;
+      });
+    };
     /**
     * @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus
     * @tutorial ExtensionDocs
@@ -14170,6 +14438,13 @@
     /**
     * @callback module:svgcanvas.ExtensionVarBuilder
     * @param {string} name The name of the extension
+    * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}
+    */
+
+    /**
+    * @callback module:svgcanvas.ExtensionNameFilter
+    * @param {string} name
+    * @returns {boolean}
     */
 
     /**
@@ -14179,12 +14454,18 @@
     * @param {"mouseDown"|"mouseMove"|"mouseUp"|"zoomChanged"|"IDsUpdated"|"canvasUpdated"|"toolButtonStateUpdate"|"selectedChanged"|"elementTransition"|"elementChanged"|"langReady"|"langChanged"|"addLangData"|"onNewDocument"|"workareaResized"} action
     * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]
     * @param {boolean} [returnArray]
+    * @param {module:svgcanvas.ExtensionNameFilter} nameFilter
     * @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.
     */
 
-    var runExtensions = this.runExtensions = function (action, vars, returnArray) {
+
+    var runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {
       var result = returnArray ? [] : false;
       $$9.each(extensions, function (name, ext) {
+        if (nameFilter && !nameFilter(name)) {
+          return;
+        }
+
         if (ext && action in ext) {
           if (typeof vars === 'function') {
             vars = vars(name); // ext, action
@@ -14334,7 +14615,8 @@
     * @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data
     * @param {module:SVGEditor~ImportLocale} importLocale
     * @fires module:svgcanvas.SvgCanvas#event:extension_added
-    * @throws {TypeError} If `extInitFunc` is not a function
+    * @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`
+    *   if extension of supplied name already exists
     * @returns {Promise} Resolves to `undefined`
     */
 
@@ -14358,11 +14640,14 @@
                 throw new TypeError('Function argument expected for `svgcanvas.addExtension`');
 
               case 2:
-                if (name in extensions) {
-                  _context.next = 12;
+                if (!(name in extensions)) {
+                  _context.next = 4;
                   break;
                 }
 
+                throw new Error('Cannot add extension "' + name + '", an extension by that name already exists.');
+
+              case 4:
                 // Provide private vars/funcs here. Is there a better way to do this?
 
                 /**
@@ -14379,16 +14664,17 @@
                  * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties
                  */
                 argObj = $$9.extend(canvas.getPrivateMethods(), {
+                  $: $$9,
                   importLocale: importLocale,
                   svgroot: svgroot,
                   svgcontent: svgcontent,
                   nonce: getCurrentDrawing().getNonce(),
                   selectorManager: selectorManager
                 });
-                _context.next = 6;
+                _context.next = 7;
                 return extInitFunc(argObj);
 
-              case 6:
+              case 7:
                 extObj = _context.sent;
 
                 if (extObj) {
@@ -14398,10 +14684,7 @@
                 extensions[name] = extObj;
                 return _context.abrupt("return", call('extension_added', extObj));
 
-              case 12:
-                console.log('Cannot add extension "' + name + '", an extension by that name already exists.');
-
-              case 13:
+              case 11:
               case "end":
                 return _context.stop();
             }
@@ -14428,7 +14711,7 @@
 
 
     var getIntersectionList = this.getIntersectionList = function (rect) {
-      if (rubberBox == null) {
+      if (isNullish(rubberBox)) {
         return null;
       }
 
@@ -14438,11 +14721,9 @@
       if (!rect) {
         rubberBBox = rubberBox.getBBox();
         var bb = svgcontent.createSVGRect();
-
-        for (var o in rubberBBox) {
+        ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach(function (o) {
           bb[o] = rubberBBox[o] / currentZoom;
-        }
-
+        });
         rubberBBox = bb;
       } else {
         rubberBBox = svgcontent.createSVGRect();
@@ -14457,13 +14738,13 @@
       if (!isIE) {
         if (typeof svgroot.getIntersectionList === 'function') {
           // Offset the bbox of the rubber box by the offset of the svgcontent element.
-          rubberBBox.x += parseInt(svgcontent.getAttribute('x'), 10);
-          rubberBBox.y += parseInt(svgcontent.getAttribute('y'), 10);
+          rubberBBox.x += parseInt(svgcontent.getAttribute('x'));
+          rubberBBox.y += parseInt(svgcontent.getAttribute('y'));
           resultList = svgroot.getIntersectionList(rubberBBox, parent);
         }
       }
 
-      if (resultList == null || typeof resultList.item !== 'function') {
+      if (isNullish(resultList) || typeof resultList.item !== 'function') {
         resultList = [];
 
         if (!curBBoxes.length) {
@@ -14664,11 +14945,18 @@
      * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}
      */
 
+    /**
+     * The promise return, if present, resolves to `undefined`
+     *  (`extension_added`, `exported`, `saved`)
+     * @typedef {Promise|undefined} module:svgcanvas.EventHandlerReturn
+    */
+
     /**
     * @callback module:svgcanvas.EventHandler
     * @param {external:Window} win
     * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg
     * @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent
+    * @returns {module:svgcanvas.EventHandlerReturn}
     */
 
     /**
@@ -14792,7 +15080,7 @@
 
       var selector = selectorManager.requestSelector(selectedElements[0]);
       selector.resize();
-      selector.updateGripCursors(val);
+      Selector.updateGripCursors(val);
     };
     /**
     * Runs `recalculateDimensions` on the selected elements,
@@ -14832,7 +15120,7 @@
 
 
     var logMatrix = function logMatrix(m) {
-      console.log([m.a, m.b, m.c, m.d, m.e, m.f]);
+      console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console
     }; // Root Current Transformation Matrix in user units
 
 
@@ -14867,7 +15155,7 @@
 
 
     this.removeFromSelection = function (elemsToRemove) {
-      if (selectedElements[0] == null) {
+      if (isNullish(selectedElements[0])) {
         return;
       }
 
@@ -15039,7 +15327,7 @@
         // set the mouseTarget to that and update the mode to rotate/resize
 
 
-        if (mouseTarget === selectorManager.selectorParentGroup && selectedElements[0] != null) {
+        if (mouseTarget === selectorManager.selectorParentGroup && !isNullish(selectedElements[0])) {
           var grip = evt.target;
           var griptype = elData(grip, 'type'); // rotating
 
@@ -15054,7 +15342,6 @@
         }
 
         startTransform = mouseTarget.getAttribute('transform');
-        var i, strokeW;
         var tlist = getTransformList(mouseTarget);
 
         switch (currentMode) {
@@ -15085,8 +15372,8 @@
               if (!rightClick) {
                 // insert a dummy transform so if the element(s) are moved it will have
                 // a transform to use for its translate
-                for (i = 0; i < selectedElements.length; ++i) {
-                  if (selectedElements[i] == null) {
+                for (var i = 0; i < selectedElements.length; ++i) {
+                  if (isNullish(selectedElements[i])) {
                     continue;
                   }
 
@@ -15103,7 +15390,7 @@
               clearSelection();
               currentMode = 'multiselect';
 
-              if (rubberBox == null) {
+              if (isNullish(rubberBox)) {
                 rubberBox = selectorManager.getRubberBandBox();
               }
 
@@ -15127,7 +15414,7 @@
           case 'zoom':
             started = true;
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = selectorManager.getRubberBandBox();
             }
 
@@ -15141,75 +15428,77 @@
             break;
 
           case 'resize':
-            started = true;
-            startX = x;
-            startY = y; // Getting the BBox from the selection box, since we know we
-            // want to orient around it
+            {
+              started = true;
+              startX = x;
+              startY = y; // Getting the BBox from the selection box, since we know we
+              // want to orient around it
 
-            initBbox = getBBox($$9('#selectedBox0')[0]);
-            var bb = {};
-            $$9.each(initBbox, function (key, val) {
-              bb[key] = val / currentZoom;
-            });
-            initBbox = bb; // append three dummy transforms to the tlist so that
-            // we can translate,scale,translate in mousemove
+              initBbox = getBBox($$9('#selectedBox0')[0]);
+              var bb = {};
+              $$9.each(initBbox, function (key, val) {
+                bb[key] = val / currentZoom;
+              });
+              initBbox = bb; // append three dummy transforms to the tlist so that
+              // we can translate,scale,translate in mousemove
 
-            var pos = getRotationAngle(mouseTarget) ? 1 : 0;
+              var pos = getRotationAngle(mouseTarget) ? 1 : 0;
 
-            if (hasMatrixTransform(tlist)) {
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-            } else {
-              tlist.appendItem(svgroot.createSVGTransform());
-              tlist.appendItem(svgroot.createSVGTransform());
-              tlist.appendItem(svgroot.createSVGTransform());
+              if (hasMatrixTransform(tlist)) {
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+              } else {
+                tlist.appendItem(svgroot.createSVGTransform());
+                tlist.appendItem(svgroot.createSVGTransform());
+                tlist.appendItem(svgroot.createSVGTransform());
 
-              if (supportsNonScalingStroke()) {
-                // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
-                // https://code.google.com/p/svg-edit/issues/detail?id=904
-                // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
-                // TODO: Remove this workaround once vendor fixes the issue
-                var iswebkit = isWebkit();
-                var delayedStroke;
-
-                if (iswebkit) {
-                  delayedStroke = function delayedStroke(ele) {
-                    var _stroke = ele.getAttribute('stroke');
-
-                    ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
-
-                    if (_stroke !== null) setTimeout(function () {
-                      ele.setAttribute('stroke', _stroke);
-                    }, 0);
-                  };
-                }
-
-                mouseTarget.style.vectorEffect = 'non-scaling-stroke';
-
-                if (iswebkit) {
-                  delayedStroke(mouseTarget);
-                }
-
-                var all = mouseTarget.getElementsByTagName('*'),
-                    len = all.length;
-
-                for (i = 0; i < len; i++) {
-                  if (!all[i].style) {
-                    // mathML
-                    continue;
-                  }
-
-                  all[i].style.vectorEffect = 'non-scaling-stroke';
+                if (supportsNonScalingStroke()) {
+                  // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
+                  // https://code.google.com/p/svg-edit/issues/detail?id=904
+                  // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
+                  // TODO: Remove this workaround once vendor fixes the issue
+                  var iswebkit = isWebkit();
+                  var delayedStroke;
 
                   if (iswebkit) {
-                    delayedStroke(all[i]);
+                    delayedStroke = function delayedStroke(ele) {
+                      var _stroke = ele.getAttribute('stroke');
+
+                      ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
+
+                      if (_stroke !== null) setTimeout(function () {
+                        ele.setAttribute('stroke', _stroke);
+                      }, 0);
+                    };
+                  }
+
+                  mouseTarget.style.vectorEffect = 'non-scaling-stroke';
+
+                  if (iswebkit) {
+                    delayedStroke(mouseTarget);
+                  }
+
+                  var all = mouseTarget.getElementsByTagName('*'),
+                      len = all.length;
+
+                  for (var _i2 = 0; _i2 < len; _i2++) {
+                    if (!all[_i2].style) {
+                      // mathML
+                      continue;
+                    }
+
+                    all[_i2].style.vectorEffect = 'non-scaling-stroke';
+
+                    if (iswebkit) {
+                      delayedStroke(all[_i2]);
+                    }
                   }
                 }
               }
-            }
 
-            break;
+              break;
+            }
 
           case 'fhellipse':
           case 'fhrect':
@@ -15239,22 +15528,24 @@
             break;
 
           case 'image':
-            started = true;
-            var newImage = addSVGElementFromJson({
-              element: 'image',
-              attr: {
-                x: x,
-                y: y,
-                width: 0,
-                height: 0,
-                id: getNextId(),
-                opacity: curShape.opacity / 2,
-                style: 'pointer-events:inherit'
-              }
-            });
-            setHref(newImage, lastGoodImgUrl);
-            preventClickDefault(newImage);
-            break;
+            {
+              started = true;
+              var newImage = addSVGElementFromJson({
+                element: 'image',
+                attr: {
+                  x: x,
+                  y: y,
+                  width: 0,
+                  height: 0,
+                  id: getNextId(),
+                  opacity: curShape.opacity / 2,
+                  style: 'pointer-events:inherit'
+                }
+              });
+              setHref(newImage, lastGoodImgUrl);
+              preventClickDefault(newImage);
+              break;
+            }
 
           case 'square': // FIXME: once we create the rect, we lose information that this was a square
           // (for resizing purposes this could be important)
@@ -15279,29 +15570,31 @@
             break;
 
           case 'line':
-            started = true;
-            strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
-            addSVGElementFromJson({
-              element: 'line',
-              curStyles: true,
-              attr: {
-                x1: x,
-                y1: y,
-                x2: x,
-                y2: y,
-                id: getNextId(),
-                stroke: curShape.stroke,
-                'stroke-width': strokeW,
-                'stroke-dasharray': curShape.stroke_dasharray,
-                'stroke-linejoin': curShape.stroke_linejoin,
-                'stroke-linecap': curShape.stroke_linecap,
-                'stroke-opacity': curShape.stroke_opacity,
-                fill: 'none',
-                opacity: curShape.opacity / 2,
-                style: 'pointer-events:none'
-              }
-            });
-            break;
+            {
+              started = true;
+              var strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
+              addSVGElementFromJson({
+                element: 'line',
+                curStyles: true,
+                attr: {
+                  x1: x,
+                  y1: y,
+                  x2: x,
+                  y2: y,
+                  id: getNextId(),
+                  stroke: curShape.stroke,
+                  'stroke-width': strokeW,
+                  'stroke-dasharray': curShape.stroke_dasharray,
+                  'stroke-linejoin': curShape.stroke_linejoin,
+                  'stroke-linecap': curShape.stroke_linecap,
+                  'stroke-opacity': curShape.stroke_opacity,
+                  fill: 'none',
+                  opacity: curShape.opacity / 2,
+                  style: 'pointer-events:none'
+                }
+              });
+              break;
+            }
 
           case 'circle':
             started = true;
@@ -15485,7 +15778,7 @@
                   for (i = 0; i < len; ++i) {
                     selected = selectedElements[i];
 
-                    if (selected == null) {
+                    if (isNullish(selected)) {
                       break;
                     } // if (i === 0) {
                     //   const box = utilsGetBBox(selected);
@@ -15837,9 +16130,7 @@
               break; // update path stretch line coordinates
             }
 
-          case 'path':
-
-          // fall through
+          case 'path': // fall through
 
           case 'pathedit':
             {
@@ -15996,7 +16287,7 @@
           // intentionally fall-through to select here
           case 'resize':
           case 'multiselect':
-            if (rubberBox != null) {
+            if (!isNullish(rubberBox)) {
               rubberBox.setAttribute('display', 'none');
               curBBoxes = [];
             }
@@ -16005,9 +16296,9 @@
           // Fallthrough
 
           case 'select':
-            if (selectedElements[0] != null) {
+            if (!isNullish(selectedElements[0])) {
               // if we only have one selected element
-              if (selectedElements[1] == null) {
+              if (isNullish(selectedElements[1])) {
                 // set our current stroke/fill properties to the element's
                 var selected = selectedElements[0];
 
@@ -16045,7 +16336,7 @@
                 var len = selectedElements.length;
 
                 for (var i = 0; i < len; ++i) {
-                  if (selectedElements[i] == null) {
+                  if (isNullish(selectedElements[i])) {
                     break;
                   }
 
@@ -16058,7 +16349,7 @@
               } else {
                 t = evt.target;
 
-                if (selectedElements[0].nodeName === 'path' && selectedElements[1] == null) {
+                if (selectedElements[0].nodeName === 'path' && isNullish(selectedElements[1])) {
                   pathActions$$1.select(selectedElements[0]); // if it was a path
                   // else, if it was selected and this is a shift-click, remove it from selection
                 } else if (evt.shiftKey) {
@@ -16075,8 +16366,8 @@
 
                 if (elem) {
                   elem.removeAttribute('style');
-                  walkTree(elem, function (elem) {
-                    elem.removeAttribute('style');
+                  walkTree(elem, function (el) {
+                    el.removeAttribute('style');
                   });
                 }
               }
@@ -16085,57 +16376,61 @@
             return;
 
           case 'zoom':
-            if (rubberBox != null) {
-              rubberBox.setAttribute('display', 'none');
-            }
+            {
+              if (!isNullish(rubberBox)) {
+                rubberBox.setAttribute('display', 'none');
+              }
 
-            var factor = evt.shiftKey ? 0.5 : 2;
-            call('zoomed', {
-              x: Math.min(rStartX, realX),
-              y: Math.min(rStartY, realY),
-              width: Math.abs(realX - rStartX),
-              height: Math.abs(realY - rStartY),
-              factor: factor
-            });
-            return;
+              var factor = evt.shiftKey ? 0.5 : 2;
+              call('zoomed', {
+                x: Math.min(rStartX, realX),
+                y: Math.min(rStartY, realY),
+                width: Math.abs(realX - rStartX),
+                height: Math.abs(realY - rStartY),
+                factor: factor
+              });
+              return;
+            }
 
           case 'fhpath':
-            // Check that the path contains at least 2 points; a degenerate one-point path
-            // causes problems.
-            // Webkit ignores how we set the points attribute with commas and uses space
-            // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
-            sumDistance = 0;
-            controllPoint2 = {
-              x: 0,
-              y: 0
-            };
-            controllPoint1 = {
-              x: 0,
-              y: 0
-            };
-            start = {
-              x: 0,
-              y: 0
-            };
-            end = {
-              x: 0,
-              y: 0
-            };
-            var coords = element.getAttribute('points');
-            var commaIndex = coords.indexOf(',');
+            {
+              // Check that the path contains at least 2 points; a degenerate one-point path
+              // causes problems.
+              // Webkit ignores how we set the points attribute with commas and uses space
+              // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
+              sumDistance = 0;
+              controllPoint2 = {
+                x: 0,
+                y: 0
+              };
+              controllPoint1 = {
+                x: 0,
+                y: 0
+              };
+              start = {
+                x: 0,
+                y: 0
+              };
+              end = {
+                x: 0,
+                y: 0
+              };
+              var coords = element.getAttribute('points');
+              var commaIndex = coords.indexOf(',');
 
-            if (commaIndex >= 0) {
-              keep = coords.indexOf(',', commaIndex + 1) >= 0;
-            } else {
-              keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+              if (commaIndex >= 0) {
+                keep = coords.indexOf(',', commaIndex + 1) >= 0;
+              } else {
+                keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+              }
+
+              if (keep) {
+                element = pathActions$$1.smoothPolylineIntoPath(element);
+              }
+
+              break;
             }
 
-            if (keep) {
-              element = pathActions$$1.smoothPolylineIntoPath(element);
-            }
-
-            break;
-
           case 'line':
             attrs = $$9(element).attr(['x1', 'x2', 'y1', 'y2']);
             keep = attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2;
@@ -16204,14 +16499,16 @@
             break;
 
           case 'path':
-            // set element to null here so that it is not removed nor finalized
-            element = null; // continue to be set to true so that mouseMove happens
+            {
+              // set element to null here so that it is not removed nor finalized
+              element = null; // continue to be set to true so that mouseMove happens
 
-            started = true;
-            var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
-            element = res.element;
-            keep = res.keep;
-            break;
+              started = true;
+              var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
+              element = res.element;
+              keep = res.keep;
+              break;
+            }
 
           case 'pathedit':
             keep = true;
@@ -16226,19 +16523,21 @@
             break;
 
           case 'rotate':
-            keep = true;
-            element = null;
-            currentMode = 'select';
-            var batchCmd = canvas.undoMgr.finishUndoableChange();
+            {
+              keep = true;
+              element = null;
+              currentMode = 'select';
+              var batchCmd = canvas.undoMgr.finishUndoableChange();
 
-            if (!batchCmd.isEmpty()) {
-              addCommandToHistory(batchCmd);
-            } // perform recalculation to weed out any stray identity transforms that might get stuck
+              if (!batchCmd.isEmpty()) {
+                addCommandToHistory(batchCmd);
+              } // perform recalculation to weed out any stray identity transforms that might get stuck
 
 
-            recalculateAllSelectedDimensions();
-            call('changed', selectedElements);
-            break;
+              recalculateAllSelectedDimensions();
+              call('changed', selectedElements);
+              break;
+            }
 
           default:
             // This could occur in an extension
@@ -16269,7 +16568,7 @@
           }
         });
 
-        if (!keep && element != null) {
+        if (!keep && !isNullish(element)) {
           getCurrentDrawing().releaseId(getId());
           element.remove();
           element = null;
@@ -16289,7 +16588,7 @@
             canvas.setMode('select');
             selectOnly([t], true);
           }
-        } else if (element != null) {
+        } else if (!isNullish(element)) {
           /**
           * @name module:svgcanvas.SvgCanvas#addedNew
           * @type {boolean}
@@ -16421,8 +16720,8 @@
         var workareaViewH = editorH * rootSctm.d; // content offset from canvas in screen pixels
 
         var wOffset = workarea.offset();
-        var wOffsetLeft = wOffset['left'] + rulerwidth;
-        var wOffsetTop = wOffset['top'] + rulerwidth;
+        var wOffsetLeft = wOffset.left + rulerwidth;
+        var wOffsetTop = wOffset.top + rulerwidth;
         var delta = evt.wheelDelta ? evt.wheelDelta : evt.detail ? -evt.detail : 0;
 
         if (!delta) {
@@ -16494,6 +16793,11 @@
       var matrix;
       var lastX, lastY;
       var allowDbl;
+      /**
+       *
+       * @param {Integer} index
+       * @returns {undefined}
+       */
 
       function setCursor(index) {
         var empty = textinput.value === '';
@@ -16551,6 +16855,14 @@
           selblock.setAttribute('d', '');
         }
       }
+      /**
+       *
+       * @param {Integer} start
+       * @param {Integer} end
+       * @param {boolean} skipInput
+       * @returns {undefined}
+       */
+
 
       function setSelection(start, end, skipInput) {
         if (start === end) {
@@ -16588,6 +16900,13 @@
           display: 'inline'
         });
       }
+      /**
+       *
+       * @param {Float} mouseX
+       * @param {Float} mouseY
+       * @returns {Integer}
+       */
+
 
       function getIndexFromPoint(mouseX, mouseY) {
         // Position cursor here
@@ -16622,10 +16941,25 @@
 
         return charpos;
       }
+      /**
+       *
+       * @param {Float} mouseX
+       * @param {Float} mouseY
+       * @returns {undefined}
+       */
+
 
       function setCursorFromPoint(mouseX, mouseY) {
         setCursor(getIndexFromPoint(mouseX, mouseY));
       }
+      /**
+       *
+       * @param {Float} x
+       * @param {Float} y
+       * @param {boolean} apply
+       * @returns {undefined}
+       */
+
 
       function setEndSelectionFromPoint(x, y, apply) {
         var i1 = textinput.selectionStart;
@@ -16634,6 +16968,13 @@
         var end = Math.max(i1, i2);
         setSelection(start, end, !apply);
       }
+      /**
+       *
+       * @param {Float} xIn
+       * @param {Float} yIn
+       * @returns {module:math.XYObject}
+       */
+
 
       function screenToPt(xIn, yIn) {
         var out = {
@@ -16651,6 +16992,13 @@
 
         return out;
       }
+      /**
+       *
+       * @param {Float} xIn
+       * @param {Float} yIn
+       * @returns {module:math.XYObject}
+       */
+
 
       function ptToScreen(xIn, yIn) {
         var out = {
@@ -16677,11 +17025,23 @@
       }
       */
 
+      /**
+       *
+       * @param {Event} evt
+       * @returns {undefined}
+       */
+
 
       function selectAll(evt) {
         setSelection(0, curtext.textContent.length);
         $$9(this).unbind(evt);
       }
+      /**
+       *
+       * @param {Event} evt
+       * @returns {undefined}
+       */
+
 
       function selectWord(evt) {
         if (!allowDbl || !curtext) {
@@ -17011,7 +17371,8 @@
 
     this.svgCanvasToString = function () {
       // keep calling it until there are none to remove
-      while (removeUnusedDefElems() > 0) {}
+      while (removeUnusedDefElems() > 0) {} // eslint-disable-line no-empty
+
 
       pathActions$$1.clear(true); // Keep SVG-Edit comment on top
 
@@ -17072,13 +17433,12 @@
       if (elem) {
         cleanupElement(elem);
         var attrs = Array.from(elem.attributes);
-        var i;
         var childs = elem.childNodes;
         attrs.sort(function (a, b) {
           return a.name > b.name ? -1 : 1;
         });
 
-        for (i = 0; i < indent; i++) {
+        for (var i = 0; i < indent; i++) {
           out.push(' ');
         }
 
@@ -17119,19 +17479,19 @@
             }
 
             $$9.each(this.attributes, function (i, attr) {
-              var uri = attr.namespaceURI;
+              var u = attr.namespaceURI;
 
-              if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {
-                nsuris[uri] = true;
-                out.push(' xmlns:' + nsMap[uri] + '="' + uri + '"');
+              if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {
+                nsuris[u] = true;
+                out.push(' xmlns:' + nsMap[u] + '="' + u + '"');
               }
             });
           });
-          i = attrs.length;
+          var _i3 = attrs.length;
           var attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];
 
-          while (i--) {
-            var attr = attrs[i];
+          while (_i3--) {
+            var attr = attrs[_i3];
             var attrVal = toXml(attr.value); // Namespaces have already been dealt with, so skip
 
             if (attr.nodeName.startsWith('xmlns:')) {
@@ -17152,13 +17512,13 @@
         } else {
           // Skip empty defs
           if (elem.nodeName === 'defs' && !elem.firstChild) {
-            return;
+            return '';
           }
 
           var mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];
 
-          for (i = attrs.length - 1; i >= 0; i--) {
-            var _attr = attrs[i];
+          for (var _i4 = attrs.length - 1; _i4 >= 0; _i4--) {
+            var _attr = attrs[_i4];
 
             var _attrVal = toXml(_attr.value); // remove bogus attributes added by Gecko
 
@@ -17214,27 +17574,29 @@
           indent++;
           var bOneLine = false;
 
-          for (i = 0; i < childs.length; i++) {
-            var child = childs.item(i);
+          for (var _i5 = 0; _i5 < childs.length; _i5++) {
+            var child = childs.item(_i5);
 
             switch (child.nodeType) {
               case 1:
                 // element node
                 out.push('\n');
-                out.push(this.svgToString(childs.item(i), indent));
+                out.push(this.svgToString(childs.item(_i5), indent));
                 break;
 
               case 3:
-                // text node
-                var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
+                {
+                  // text node
+                  var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
 
-                if (str !== '') {
-                  bOneLine = true;
-                  out.push(String(toXml(str)));
+                  if (str !== '') {
+                    bOneLine = true;
+                    out.push(String(toXml(str)));
+                  }
+
+                  break;
                 }
 
-                break;
-
               case 4:
                 // cdata node
                 out.push('\n');
@@ -17261,7 +17623,7 @@
           if (!bOneLine) {
             out.push('\n');
 
-            for (i = 0; i < indent; i++) {
+            for (var _i6 = 0; _i6 < indent; _i6++) {
               out.push(' ');
             }
           }
@@ -17288,13 +17650,14 @@
     * Converts a given image file to a data URL when possible, then runs a given callback.
     * @function module:svgcanvas.SvgCanvas#embedImage
     * @param {string} src - The path/URL of the image
-    * @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found
     * @returns {Promise} Resolves to Data URL (string|false)
     */
 
 
-    this.embedImage = function (src, callback) {
+    this.embedImage = function (src) {
+      // Todo: Remove this Promise in favor of making an async/await `Image.load` utility
       return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
         // load in the image and once it's loaded, get the dimensions
         $$9(new Image()).load(function (response, status, xhr) {
           if (status === 'error') {
@@ -17318,11 +17681,6 @@
           }
 
           lastGoodImgUrl = src;
-
-          if (callback) {
-            callback(encodableImages[src]);
-          }
-
           resolve(encodableImages[src]);
         }).attr('src', src);
       });
@@ -17345,7 +17703,9 @@
     */
 
 
-    this.open = function () {};
+    this.open = function () {
+      /* */
+    };
     /**
     * Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.
     * This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save
@@ -17371,7 +17731,7 @@
       call('saved', str);
     };
     /**
-    * @typedef {GenericObject} module:svgcanvas.IssuesAndCodes
+    * @typedef {PlainObject} module:svgcanvas.IssuesAndCodes
     * @property {string[]} issueCodes The locale-independent code names
     * @property {string[]} issues The localized descriptions
     */
@@ -17430,13 +17790,6 @@
     * @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added
     */
 
-    /**
-     * Function to run when image data is found
-     * @callback module:svgcanvas.ImageExportedCallback
-     * @param {module:svgcanvas.ImageExportedResults} obj
-     * @returns {undefined}
-     */
-
     /**
     * Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,
     * then calls "exported" with an object including the string, image
@@ -17445,7 +17798,6 @@
     * @param {"PNG"|"JPEG"|"BMP"|"WEBP"|"ICO"} [imgType="PNG"]
     * @param {Float} [quality] Between 0 and 1
     * @param {string} [exportWindowName]
-    * @param {module:svgcanvas.ImageExportedCallback} [cb]
     * @param {PlainObject} [opts]
     * @param {boolean} [opts.avoidEvent]
     * @fires module:svgcanvas.SvgCanvas#event:exported
@@ -17453,29 +17805,72 @@
     * @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}
     */
 
-    this.rasterExport = function (imgType, quality, exportWindowName, cb) {
-      var opts = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
-      var type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
-      var mimeType = 'image/' + type.toLowerCase();
-
-      var _getIssues = getIssues(),
-          issues = _getIssues.issues,
-          issueCodes = _getIssues.issueCodes;
-
-      var svg = this.svgCanvasToString();
-      return new Promise(
+    this.rasterExport =
+    /*#__PURE__*/
+    function () {
+      var _ref4 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref4 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee2(resolve, reject) {
-          var _ref5, c, dataURLType, datauri, bloburl, done;
+      regeneratorRuntime.mark(function _callee2(imgType, quality, exportWindowName) {
+        var opts,
+            type,
+            mimeType,
+            _getIssues,
+            issues,
+            issueCodes,
+            svg,
+            _ref5,
+            c,
+            _args2 = arguments;
 
-          return regeneratorRuntime.wrap(function _callee2$(_context2) {
-            while (1) {
-              switch (_context2.prev = _context2.next) {
-                case 0:
-                  done = function _ref6() {
+        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+          while (1) {
+            switch (_context2.prev = _context2.next) {
+              case 0:
+                opts = _args2.length > 3 && _args2[3] !== undefined ? _args2[3] : {};
+                type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
+                mimeType = 'image/' + type.toLowerCase();
+                _getIssues = getIssues(), issues = _getIssues.issues, issueCodes = _getIssues.issueCodes;
+                svg = this.svgCanvasToString();
+
+                if (canvg) {
+                  _context2.next = 10;
+                  break;
+                }
+
+                _context2.next = 8;
+                return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
+                  global: 'canvg'
+                });
+
+              case 8:
+                _ref5 = _context2.sent;
+                canvg = _ref5.canvg;
+
+              case 10:
+                if (!$$9('#export_canvas').length) {
+                  $$9('<canvas>', {
+                    id: 'export_canvas'
+                  }).hide().appendTo('body');
+                }
+
+                c = $$9('#export_canvas')[0];
+                c.width = canvas.contentW;
+                c.height = canvas.contentH;
+                _context2.next = 16;
+                return canvg(c, svg);
+
+              case 16:
+                return _context2.abrupt("return", new Promise(function (resolve, reject) {
+                  // eslint-disable-line promise/avoid-new
+                  var dataURLType = type.toLowerCase();
+                  var datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
+                  var bloburl;
+                  /**
+                   * Called when `bloburl` is available for export.
+                   * @returns {undefined}
+                   */
+
+                  function done() {
                     var obj = {
                       datauri: datauri,
                       bloburl: bloburl,
@@ -17492,72 +17887,33 @@
                       call('exported', obj);
                     }
 
-                    if (cb) {
-                      cb(obj);
-                    }
-
                     resolve(obj);
-                  };
-
-                  if (canvg) {
-                    _context2.next = 6;
-                    break;
                   }
 
-                  _context2.next = 4;
-                  return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
-                    global: 'canvg'
-                  });
-
-                case 4:
-                  _ref5 = _context2.sent;
-                  canvg = _ref5.canvg;
-
-                case 6:
-                  if (!$$9('#export_canvas').length) {
-                    $$9('<canvas>', {
-                      id: 'export_canvas'
-                    }).hide().appendTo('body');
+                  if (c.toBlob) {
+                    c.toBlob(function (blob) {
+                      bloburl = createObjectURL(blob);
+                      done();
+                    }, mimeType, quality);
+                    return;
                   }
 
-                  c = $$9('#export_canvas')[0];
-                  c.width = canvas.contentW;
-                  c.height = canvas.contentH;
-                  _context2.next = 12;
-                  return canvg(c, svg);
-
-                case 12:
-                  dataURLType = type.toLowerCase();
-                  datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
-
-                  if (!c.toBlob) {
-                    _context2.next = 17;
-                    break;
-                  }
-
-                  c.toBlob(function (blob) {
-                    bloburl = createObjectURL(blob);
-                    done();
-                  }, mimeType, quality);
-                  return _context2.abrupt("return");
-
-                case 17:
                   bloburl = dataURLToObjectURL(datauri);
                   done();
+                }));
 
-                case 19:
-                case "end":
-                  return _context2.stop();
-              }
+              case 17:
+              case "end":
+                return _context2.stop();
             }
-          }, _callee2, this);
-        }));
+          }
+        }, _callee2, this);
+      }));
 
-        return function (_x4, _x5) {
-          return _ref4.apply(this, arguments);
-        };
-      }());
-    };
+      return function (_x4, _x5, _x6) {
+        return _ref4.apply(this, arguments);
+      };
+    }();
     /**
      * @external jsPDF
      */
@@ -17586,118 +17942,114 @@
     * @property {string} exportWindowName
     */
 
-    /**
-     * Function to run when PDF data is found
-     * @callback module:svgcanvas.PDFExportedCallback
-     * @param {module:svgcanvas.PDFExportedResults} obj
-     * @returns {undefined}
-     */
-
     /**
     * Generates a PDF based on the current image, then calls "exportedPDF" with
     * an object including the string, the data URL, and any issues found.
     * @function module:svgcanvas.SvgCanvas#exportPDF
     * @param {string} [exportWindowName] Will also be used for the download file name here
     * @param {external:jsPDF.OutputType} [outputType="dataurlstring"]
-    * @param {module:svgcanvas.PDFExportedCallback} [cb]
     * @fires module:svgcanvas.SvgCanvas#event:exportedPDF
     * @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}
     */
 
 
-    this.exportPDF = function (exportWindowName) {
-      var outputType = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : isChrome() ? 'save' : undefined;
-      var cb = arguments.length > 2 ? arguments[2] : undefined;
-      var that = this;
-      return new Promise(
+    this.exportPDF =
+    /*#__PURE__*/
+    function () {
+      var _ref6 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref7 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee3(resolve, reject) {
-          var modularVersion, res, orientation, unit, doc, docTitle, _getIssues2, issues, issueCodes, svg, obj;
+      regeneratorRuntime.mark(function _callee3(exportWindowName) {
+        var outputType,
+            modularVersion,
+            res,
+            orientation,
+            unit,
+            doc,
+            docTitle,
+            _getIssues2,
+            issues,
+            issueCodes,
+            svg,
+            obj,
+            _args3 = arguments;
 
-          return regeneratorRuntime.wrap(function _callee3$(_context3) {
-            while (1) {
-              switch (_context3.prev = _context3.next) {
-                case 0:
-                  if (window.jsPDF) {
-                    _context3.next = 6;
-                    break;
-                  }
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
+          while (1) {
+            switch (_context3.prev = _context3.next) {
+              case 0:
+                outputType = _args3.length > 1 && _args3[1] !== undefined ? _args3[1] : isChrome() ? 'save' : undefined;
 
-                  _context3.next = 3;
-                  return importScript([// We do not currently have these paths configurable as they are
-                  //   currently global-only, so not Rolled-up
-                  'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
+                if (window.jsPDF) {
+                  _context3.next = 7;
+                  break;
+                }
 
-                case 3:
-                  modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
+                _context3.next = 4;
+                return importScript([// We do not currently have these paths configurable as they are
+                //   currently global-only, so not Rolled-up
+                'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
 
-                  _context3.next = 6;
-                  return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
-                    type: modularVersion ? 'module' : 'text/javascript'
-                  });
+              case 4:
+                modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
 
-                case 6:
-                  res = getResolution();
-                  orientation = res.w > res.h ? 'landscape' : 'portrait';
-                  unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
-                  // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
+                _context3.next = 7;
+                return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
+                  type: modularVersion ? 'module' : 'text/javascript'
+                });
 
-                  doc = jsPDF({
-                    orientation: orientation,
-                    unit: unit,
-                    format: [res.w, res.h] // , compressPdf: true
+              case 7:
+                res = getResolution();
+                orientation = res.w > res.h ? 'landscape' : 'portrait';
+                unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
+                // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
 
-                  });
-                  docTitle = getDocumentTitle();
-                  doc.setProperties({
-                    title: docTitle
-                    /* ,
-                    subject: '',
-                    author: '',
-                    keywords: '',
-                    creator: '' */
+                doc = jsPDF({
+                  orientation: orientation,
+                  unit: unit,
+                  format: [res.w, res.h] // , compressPdf: true
 
-                  });
-                  _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
-                  svg = that.svgCanvasToString();
-                  doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
-                  //  window; todo: configure this and other export
-                  //  options to optionally work in this manner as
-                  //  opposed to opening a new tab
+                });
+                docTitle = getDocumentTitle();
+                doc.setProperties({
+                  title: docTitle
+                  /* ,
+                  subject: '',
+                  author: '',
+                  keywords: '',
+                  creator: '' */
 
-                  outputType = outputType || 'dataurlstring';
-                  obj = {
-                    svg: svg,
-                    issues: issues,
-                    issueCodes: issueCodes,
-                    exportWindowName: exportWindowName,
-                    outputType: outputType
-                  };
-                  obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+                });
+                _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
+                svg = this.svgCanvasToString();
+                doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
+                //  window; todo: configure this and other export
+                //  options to optionally work in this manner as
+                //  opposed to opening a new tab
 
-                  if (cb) {
-                    cb(obj);
-                  }
+                outputType = outputType || 'dataurlstring';
+                obj = {
+                  svg: svg,
+                  issues: issues,
+                  issueCodes: issueCodes,
+                  exportWindowName: exportWindowName,
+                  outputType: outputType
+                };
+                obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+                call('exportedPDF', obj);
+                return _context3.abrupt("return", obj);
 
-                  resolve(obj);
-                  call('exportedPDF', obj);
-
-                case 21:
-                case "end":
-                  return _context3.stop();
-              }
+              case 21:
+              case "end":
+                return _context3.stop();
             }
-          }, _callee3, this);
-        }));
+          }
+        }, _callee3, this);
+      }));
 
-        return function (_x6, _x7) {
-          return _ref7.apply(this, arguments);
-        };
-      }());
-    };
+      return function (_x7) {
+        return _ref6.apply(this, arguments);
+      };
+    }();
     /**
     * Returns the current drawing as raw SVG XML text.
     * @function module:svgcanvas.SvgCanvas#getSvgString
@@ -17891,18 +18243,18 @@
       }
 
       elems.each(function () {
-        var grad = this;
+        var grad = this; // eslint-disable-line consistent-this
 
         if ($$9(grad).attr('gradientUnits') === 'userSpaceOnUse') {
           // TODO: Support more than one element with this ref by duplicating parent grad
-          var _elems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
+          var fillStrokeElems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
 
-          if (!_elems.length) {
+          if (!fillStrokeElems.length) {
             return;
           } // get object's bounding box
 
 
-          var bb = getBBox(_elems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
+          var bb = getBBox(fillStrokeElems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
           // in which we shouldn't need to convert anyway.
 
           if (!bb) {
@@ -17994,8 +18346,8 @@
 
         if (vb) {
           var nums = vb.split(' ');
-          pos.x -= +nums[0];
-          pos.y -= +nums[1];
+          pos.x -= Number(nums[0]);
+          pos.y -= Number(nums[1]);
         } // Not ideal, but works
 
 
@@ -18061,7 +18413,7 @@
           try {
             recalculateDimensions(n);
           } catch (e) {
-            console.log(e);
+            console.log(e); // eslint-disable-line no-console
           }
         }); // Give ID for any visible element missing one
 
@@ -18079,7 +18431,7 @@
 
         addCommandToHistory(batchCmd);
       } else {
-        console.log('Unexpected element to ungroup:', elem);
+        console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console
       }
     };
     /**
@@ -18135,7 +18487,8 @@
 
 
         content.find('image').each(function () {
-          var image = this;
+          var image = this; // eslint-disable-line consistent-this
+
           preventClickDefault(image);
           var val = getHref(this);
 
@@ -18249,7 +18602,8 @@
         if (!preventUndo) addCommandToHistory(batchCmd);
         call('changed', [svgcontent]);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
+
         return false;
       }
 
@@ -18312,12 +18666,12 @@
           vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];
 
           for (j = 0; j < 4; ++j) {
-            vb[j] = +vb[j];
+            vb[j] = Number(vb[j]);
           } // TODO: properly handle preserveAspectRatio
 
 
           var // canvasw = +svgcontent.getAttribute('width'),
-          canvash = +svgcontent.getAttribute('height'); // imported content should be 1/3 of the canvas on its largest dimension
+          canvash = Number(svgcontent.getAttribute('height')); // imported content should be 1/3 of the canvas on its largest dimension
 
           if (innerh > innerw) {
             ts = 'scale(' + canvash / 3 / vb[3] + ')';
@@ -18376,7 +18730,8 @@
         addCommandToHistory(batchCmd);
         call('changed', [svgcontent]);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
+
         return null;
       } // we want to return the element so we can automatically select it
 
@@ -18386,8 +18741,27 @@
     //  canvas is a dependency for all of these
 
 
-    ['identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer', 'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition', 'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers', 'leaveContext', 'setContext'].forEach(function (prop) {
-      canvas[prop] = draw[prop];
+    var dr = {
+      identifyLayers: identifyLayers,
+      createLayer: createLayer,
+      cloneLayer: cloneLayer,
+      deleteCurrentLayer: deleteCurrentLayer,
+      setCurrentLayer: setCurrentLayer,
+      renameCurrentLayer: renameCurrentLayer,
+      setCurrentLayerPosition: setCurrentLayerPosition,
+      setLayerVisibility: setLayerVisibility,
+      moveSelectedToLayer: moveSelectedToLayer,
+      mergeLayer: mergeLayer,
+      mergeAllLayers: mergeAllLayers,
+      leaveContext: leaveContext,
+      setContext: setContext
+    };
+    Object.entries(dr).forEach(function (_ref7) {
+      var _ref8 = _slicedToArray(_ref7, 2),
+          prop = _ref8[0],
+          propVal = _ref8[1];
+
+      canvas[prop] = propVal;
     });
     init$3(
     /**
@@ -18518,6 +18892,7 @@
 
     this.setUiStrings = function (strs) {
       Object.assign(uiStrings, strs.notification);
+      $$9 = jQueryPluginDBox($$9, strs.common);
       setUiStrings(strs);
     };
     /**
@@ -18533,8 +18908,9 @@
     };
     /**
     * @function module:svgcanvas.SvgCanvas#getTitle
-    * @param {Element} elem
-    * @returns {string|undefined} the current group/SVG's title contents
+    * @param {Element} [elem]
+    * @returns {string|undefined} the current group/SVG's title contents or
+    * `undefined` if no element is passed nd there are no selected elements.
     */
 
 
@@ -18542,7 +18918,7 @@
       elem = elem || selectedElements[0];
 
       if (!elem) {
-        return;
+        return undefined;
       }
 
       elem = $$9(elem).data('gsvg') || $$9(elem).data('symbol') || elem;
@@ -18762,6 +19138,7 @@
       var bb;
 
       var calcZoom = function calcZoom(bb) {
+        // eslint-disable-line no-shadow
         if (!bb) {
           return false;
         }
@@ -18793,28 +19170,34 @@
 
       switch (val) {
         case 'selection':
-          if (!selectedElements[0]) {
-            return;
+          {
+            if (!selectedElements[0]) {
+              return undefined;
+            }
+
+            var selectedElems = $$9.map(selectedElements, function (n) {
+              if (n) {
+                return n;
+              }
+
+              return undefined;
+            });
+            bb = getStrokedBBoxDefaultVisible(selectedElems);
+            break;
           }
 
-          var selectedElems = $$9.map(selectedElements, function (n) {
-            if (n) {
-              return n;
-            }
-          });
-          bb = getStrokedBBoxDefaultVisible(selectedElems);
-          break;
-
         case 'canvas':
-          var res = getResolution();
-          spacer = 0.95;
-          bb = {
-            width: res.w,
-            height: res.h,
-            x: 0,
-            y: 0
-          };
-          break;
+          {
+            var res = getResolution();
+            spacer = 0.95;
+            bb = {
+              width: res.w,
+              height: res.h,
+              x: 0,
+              y: 0
+            };
+            break;
+          }
 
         case 'content':
           bb = getStrokedBBoxDefaultVisible();
@@ -18825,7 +19208,7 @@
           break;
 
         default:
-          return;
+          return undefined;
       }
 
       return calcZoom(bb);
@@ -18994,6 +19377,11 @@
         type: 'solidColor'
       };
       var elems = [];
+      /**
+       *
+       * @param {Element} e
+       * @returns {undefined}
+       */
 
       function addNonG(e) {
         if (e.nodeName !== 'g') {
@@ -19009,14 +19397,12 @@
         if (elem) {
           if (elem.tagName === 'g') {
             walkTree(elem, addNonG);
-          } else {
-            if (type === 'fill') {
-              if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
-                elems.push(elem);
-              }
-            } else {
+          } else if (type === 'fill') {
+            if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
               elems.push(elem);
             }
+          } else {
+            elems.push(elem);
           }
         }
       }
@@ -19086,7 +19472,7 @@
             var gradAttrs = $$9(grad).attr(radAttrs);
             var ogAttrs = $$9(og).attr(radAttrs);
             var diff = false;
-            $$9.each(radAttrs, function (i, attr) {
+            $$9.each(radAttrs, function (j, attr) {
               if (gradAttrs[attr] !== ogAttrs[attr]) {
                 diff = true;
               }
@@ -19202,6 +19588,11 @@
 
       curProperties.stroke_width = val;
       var elems = [];
+      /**
+       *
+       * @param {Element} e
+       * @returns {undefined}
+       */
 
       function addNonG(e) {
         if (e.nodeName !== 'g') {
@@ -19408,7 +19799,7 @@
           }
 
           if (isWebkit()) {
-            console.log('e', elem);
+            // console.log('e', elem); // eslint-disable-line no-console
             elem.removeAttribute('filter');
             elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');
           }
@@ -19417,6 +19808,11 @@
           canvas.setBlurOffsets(filter, val);
         }
       };
+      /**
+       *
+       * @returns {undefined}
+       */
+
 
       function finishChange() {
         var bCmd = canvas.undoMgr.finishUndoableChange();
@@ -19429,29 +19825,26 @@
       * Sets the `x`, `y`, `width`, `height` values of the filter element in order to
       * make the blur not be clipped. Removes them if not neeeded.
       * @function module:svgcanvas.SvgCanvas#setBlurOffsets
-      * @param {Element} filter - The filter DOM element to update
+      * @param {Element} filterElem - The filter DOM element to update
       * @param {Float} stdDev - The standard deviation value on which to base the offset size
       * @returns {undefined}
       */
 
 
-      canvas.setBlurOffsets = function (filter, stdDev) {
+      canvas.setBlurOffsets = function (filterElem, stdDev) {
         if (stdDev > 3) {
           // TODO: Create algorithm here where size is based on expected blur
-          assignAttributes(filter, {
+          assignAttributes(filterElem, {
             x: '-50%',
             y: '-50%',
             width: '200%',
             height: '200%'
-          }, 100);
-        } else {
-          // Removing these attributes hides text in Chrome (see Issue 579)
-          if (!isWebkit()) {
-            filter.removeAttribute('x');
-            filter.removeAttribute('y');
-            filter.removeAttribute('width');
-            filter.removeAttribute('height');
-          }
+          }, 100); // Removing these attributes hides text in Chrome (see Issue 579)
+        } else if (!isWebkit()) {
+          filterElem.removeAttribute('x');
+          filterElem.removeAttribute('y');
+          filterElem.removeAttribute('width');
+          filterElem.removeAttribute('height');
         }
       };
       /**
@@ -19533,7 +19926,7 @@
       // should only have one element selected
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         return selected.getAttribute('font-weight') === 'bold';
       }
 
@@ -19550,7 +19943,7 @@
     this.setBold = function (b) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');
       }
 
@@ -19568,7 +19961,7 @@
     this.getItalic = function () {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         return selected.getAttribute('font-style') === 'italic';
       }
 
@@ -19585,7 +19978,7 @@
     this.setItalic = function (i) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         changeSelectedAttribute('font-style', i ? 'italic' : 'normal');
       }
 
@@ -19673,7 +20066,7 @@
     this.getText = function () {
       var selected = selectedElements[0];
 
-      if (selected == null) {
+      if (isNullish(selected)) {
         return '';
       }
 
@@ -19786,7 +20179,7 @@
     this.setRectRadius = function (val) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'rect') {
+      if (!isNullish(selected) && selected.tagName === 'rect') {
         var r = selected.getAttribute('rx');
 
         if (r !== String(val)) {
@@ -19848,14 +20241,14 @@
 
 
     this.convertToPath = function (elem, getBBox$$1) {
-      if (elem == null) {
+      if (isNullish(elem)) {
         var elems = selectedElements;
-        $$9.each(elems, function (i, elem) {
-          if (elem) {
-            canvas.convertToPath(elem);
+        $$9.each(elems, function (i, el) {
+          if (el) {
+            canvas.convertToPath(el);
           }
         });
-        return;
+        return undefined;
       }
 
       if (getBBox$$1) {
@@ -19876,7 +20269,7 @@
         opacity: curShape.opacity,
         visibility: 'hidden'
       };
-      return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory);
+      return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory);
     };
     /**
     * This function makes the changes to the elements. It does not add the change
@@ -19896,13 +20289,12 @@
 
       elems = elems || selectedElements;
       var i = elems.length;
-      var noXYElems = ['g', 'polyline', 'path'];
-      var goodGAttrs = ['transform', 'opacity', 'filter'];
+      var noXYElems = ['g', 'polyline', 'path']; // const goodGAttrs = ['transform', 'opacity', 'filter'];
 
       var _loop = function _loop() {
         var elem = elems[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           return "continue";
         } // Set x,y vals on elements that don't have them
 
@@ -19914,14 +20306,13 @@
           canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);
           return "continue";
         } // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky
-        // TODO: FIXME: This doesn't seem right. Where's the body of this if statement?
+        // TODO: FIXME: Missing statement body
+        // if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}
 
 
-        if (elem.tagName === 'g' && goodGAttrs.includes(attr)) ;
-
         var oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);
 
-        if (oldval == null) {
+        if (isNullish(oldval)) {
           oldval = '';
         }
 
@@ -20065,7 +20456,7 @@
       for (var i = 0; i < len; ++i) {
         var selected = selectedElements[i];
 
-        if (selected == null) {
+        if (isNullish(selected)) {
           break;
         }
 
@@ -20155,6 +20546,12 @@
 
       var changedIDs = {}; // Recursively replace IDs and record the changes
 
+      /**
+       *
+       * @param {module:svgcanvas.SVGAsJSON} elem
+       * @returns {undefined}
+       */
+
       function checkIDs(elem) {
         if (elem.attr && elem.attr.id) {
           changedIDs[elem.attr.id] = getNextId();
@@ -20283,7 +20680,7 @@
       while (i--) {
         var elem = selectedElements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           continue;
         }
 
@@ -20310,7 +20707,7 @@
     * @function module:svgcanvas.SvgCanvas#pushGroupProperties
     * @param {SVGAElement|SVGGElement} g
     * @param {boolean} undoable
-    * @returns {undefined}
+    * @returns {BatchCommand|undefined}
     */
 
 
@@ -20494,6 +20891,8 @@
       if (undoable && !batchCmd.isEmpty()) {
         return batchCmd;
       }
+
+      return undefined;
     };
     /**
     * Unwraps all the elements in a selected group (`g`) element. This requires
@@ -20590,7 +20989,7 @@
           _selectedElements2 = _slicedToArray(_selectedElements, 1),
           selected = _selectedElements2[0];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         var t = selected;
         var oldParent = t.parentNode;
         var oldNextSibling = t.nextSibling;
@@ -20617,7 +21016,7 @@
           _selectedElements4 = _slicedToArray(_selectedElements3, 1),
           selected = _selectedElements4[0];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         var t = selected;
         var oldParent = t.parentNode;
         var oldNextSibling = t.nextSibling;
@@ -20674,10 +21073,11 @@
             foundCur = true;
           }
 
-          return;
+          return true;
         }
 
-        closest = this;
+        closest = this; // eslint-disable-line consistent-this
+
         return false;
       });
 
@@ -20703,7 +21103,7 @@
     * @param {Float} dy - Float with the distance to move on the y-axis
     * @param {boolean} undoable - Boolean indicating whether or not the action should be undoable
     * @fires module:svgcanvas.SvgCanvas#event:changed
-    * @returns {BatchCommand} Batch command for the move
+    * @returns {BatchCommand|undefined} Batch command for the move
     */
 
 
@@ -20722,7 +21122,7 @@
       while (i--) {
         var selected = selectedElements[i];
 
-        if (selected != null) {
+        if (!isNullish(selected)) {
           // if (i === 0) {
           //   selectedBBoxes[0] = utilsGetBBox(selected);
           // }
@@ -20770,6 +21170,8 @@
         call('changed', selectedElements);
         return batchCmd;
       }
+
+      return undefined;
     };
     /**
     * Create deep DOM copies (clones) of all selected elements and move them slightly
@@ -20786,9 +21188,15 @@
       var batchCmd = new BatchCommand$1('Clone Elements'); // find all the elements selected (stop at first null)
 
       var len = selectedElements.length;
+      /**
+       * Sorts an array numerically and ascending.
+       * @param {Element} a
+       * @param {Element} b
+       * @returns {Integer}
+       */
 
       function sortfunction(a, b) {
-        return $$9(b).index() - $$9(a).index(); // causes an array to be sorted numerically and ascending
+        return $$9(b).index() - $$9(a).index();
       }
 
       selectedElements.sort(sortfunction);
@@ -20796,7 +21204,7 @@
       for (i = 0; i < len; ++i) {
         elem = selectedElements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           break;
         }
       } // use slice to quickly get the subset of elements we need
@@ -20849,7 +21257,7 @@
           curheight = Number.MIN_VALUE;
 
       for (var i = 0; i < len; ++i) {
-        if (selectedElements[i] == null) {
+        if (isNullish(selectedElements[i])) {
           break;
         }
 
@@ -20914,45 +21322,45 @@
       var dx = new Array(len);
       var dy = new Array(len);
 
-      for (var _i2 = 0; _i2 < len; ++_i2) {
-        if (selectedElements[_i2] == null) {
+      for (var _i7 = 0; _i7 < len; ++_i7) {
+        if (isNullish(selectedElements[_i7])) {
           break;
         } // const elem = selectedElements[i];
 
 
-        var bbox = bboxes[_i2];
-        dx[_i2] = 0;
-        dy[_i2] = 0;
+        var bbox = bboxes[_i7];
+        dx[_i7] = 0;
+        dy[_i7] = 0;
 
         switch (type) {
           case 'l':
             // left (horizontal)
-            dx[_i2] = minx - bbox.x;
+            dx[_i7] = minx - bbox.x;
             break;
 
           case 'c':
             // center (horizontal)
-            dx[_i2] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
+            dx[_i7] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
             break;
 
           case 'r':
             // right (horizontal)
-            dx[_i2] = maxx - (bbox.x + bbox.width);
+            dx[_i7] = maxx - (bbox.x + bbox.width);
             break;
 
           case 't':
             // top (vertical)
-            dy[_i2] = miny - bbox.y;
+            dy[_i7] = miny - bbox.y;
             break;
 
           case 'm':
             // middle (vertical)
-            dy[_i2] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
+            dy[_i7] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
             break;
 
           case 'b':
             // bottom (vertical)
-            dy[_i2] = maxy - (bbox.y + bbox.height);
+            dy[_i7] = maxy - (bbox.y + bbox.height);
             break;
         }
       }
@@ -21111,7 +21519,7 @@
         return;
       }
 
-      if (curElem == null) {
+      if (isNullish(curElem)) {
         num = next ? allElems.length - 1 : 0;
         elem = allElems[num];
       } else {
@@ -21233,7 +21641,7 @@
    * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
   */
   // We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`
-  function jqPluginJSHotkeys (b) {
+  function jQueryPluginJSHotkeys (b) {
     b.hotkeys = {
       version: "0.8",
       specialKeys: {
@@ -21385,7 +21793,7 @@
    * http://benalman.com/about/license/
    */
   // For sake of modules, added this wrapping export and changed `this` to `window`
-  function jqPluginBBQ (jQuery) {
+  function jQueryPluginBBQ (jQuery) {
     (function ($, p) {
       var i,
           m = Array.prototype.slice,
@@ -21735,6 +22143,7 @@
     return jQuery;
   }
 
+  // Todo: Move to own module (and have it import a modular base64 encoder)
   /**
    * SVG Icon Loader 2.0
    *
@@ -21833,17 +22242,23 @@
    * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object
    * @returns {external:jQuery} The enhanced jQuery object
   */
-  function jqPluginSVGIcons ($) {
+
+  function jQueryPluginSVGIcons($) {
     var svgIcons = {};
     var fixIDs;
+    /**
+     * List of raster images with each
+     * key being the SVG icon ID to replace, and the value the image file name
+     * @typedef {PlainObject.<string, string>} external:jQuery.svgIcons.Fallback
+    */
+
     /**
     * @function external:jQuery.svgIcons
     * @param {string} file The location of a local SVG or SVGz file
     * @param {PlainObject} [opts]
     * @param {Float} [opts.w] The icon widths
     * @param {Float} [opts.h] The icon heights
-    * @param {PlainObject.<string, string>} [opts.fallback] List of raster images with each
-      key being the SVG icon ID to replace, and the value the image file name
+    * @param {external:jQuery.svgIcons.Fallback} [opts.fallback]
     * @param {string} [opts.fallback_path] The path to use for all images
       listed under "fallback"
     * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,
@@ -21875,7 +22290,7 @@
           iconsMade = false,
           dataLoaded = false,
           loadAttempts = 0;
-      var isOpera = !!window.opera,
+      var isOpera = Boolean(window.opera),
           // ua = navigator.userAgent,
       // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),
       dataPre = 'data:image/svg+xml;charset=utf-8;base64,';
@@ -21913,24 +22328,29 @@
               $(function () {
                 useFallback();
               });
-            } else {
-              if (err.responseText) {
-                svgdoc = parser.parseFromString(err.responseText, 'text/xml');
+            } else if (err.responseText) {
+              svgdoc = parser.parseFromString(err.responseText, 'text/xml');
 
-                if (!svgdoc.childNodes.length) {
-                  $(useFallback);
-                }
-
-                $(function () {
-                  getIcons('ajax');
-                });
-              } else {
+              if (!svgdoc.childNodes.length) {
                 $(useFallback);
               }
+
+              $(function () {
+                getIcons('ajax');
+              });
+            } else {
+              $(useFallback);
             }
           }
         });
       }
+      /**
+       *
+       * @param {"ajax"|0|undefined} evt
+       * @param {boolean} [noWait]
+       * @returns {undefined}
+       */
+
 
       function getIcons(evt, noWait) {
         if (evt !== 'ajax') {
@@ -21978,6 +22398,15 @@
           }, 500);
         }
       }
+      /**
+       *
+       * @param {external:jQuery} target
+       * @param {external:jQuery} icon A wrapped `defs` or Image
+       * @param {string} id SVG icon ID
+       * @param {string} setID
+       * @returns {undefined}
+       */
+
 
       function setIcon(target, icon, id, setID) {
         if (isOpera) icon.css('visibility', 'hidden');
@@ -21999,6 +22428,11 @@
       }
 
       var holder;
+      /**
+       * @param {external:jQuery} icon A wrapped `defs` or Image
+       * @param {string} id SVG icon ID
+       * @returns {undefined}
+       */
 
       function addIcon(icon, id) {
         if (opts.id_match === undefined || opts.id_match !== false) {
@@ -22007,8 +22441,17 @@
 
         svgIcons[id] = icon;
       }
+      /**
+       *
+       * @param {boolean} [toImage]
+       * @param {external:jQuery.svgIcons.Fallback} [fallback]
+       * @returns {undefined}
+       */
 
-      function makeIcons(toImage, fallback) {
+
+      function makeIcons() {
+        var toImage = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
+        var fallback = arguments.length > 1 ? arguments[1] : undefined;
         if (iconsMade) return;
         if (opts.no_img) toImage = false;
         var tempHolder;
@@ -22111,7 +22554,7 @@
 
         if (isOpera) {
           idElems = defs.find('*').filter(function () {
-            return !!this.id;
+            return Boolean(this.id);
           });
         } else {
           idElems = defs.find('[id]');
@@ -22161,13 +22604,17 @@
         });
         return svgEl;
       };
+      /**
+       * @returns {undefined}
+       */
+
 
       function useFallback() {
         if (file.includes('.svgz')) {
           var regFile = file.replace('.svgz', '.svg');
 
           if (window.console) {
-            console.log('.svgz failed, trying with .svg');
+            console.log('.svgz failed, trying with .svg'); // eslint-disable-line no-console
           }
 
           $.svgIcons(regFile, opts);
@@ -22175,38 +22622,6 @@
           makeIcons(false, opts.fallback);
         }
       }
-
-      function encode64(input) {
-        // base64 strings are 4/3 larger than the original string
-        if (window.btoa) return window.btoa(input);
-        var _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-        var output = new Array(Math.floor((input.length + 2) / 3) * 4);
-        var i = 0,
-            p = 0;
-
-        do {
-          var chr1 = input.charCodeAt(i++);
-          var chr2 = input.charCodeAt(i++);
-          var chr3 = input.charCodeAt(i++);
-          var enc1 = chr1 >> 2;
-          var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
-          var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
-          var enc4 = chr3 & 63;
-
-          if (isNaN(chr2)) {
-            enc3 = enc4 = 64;
-          } else if (isNaN(chr3)) {
-            enc4 = 64;
-          }
-
-          output[p++] = _keyStr.charAt(enc1);
-          output[p++] = _keyStr.charAt(enc2);
-          output[p++] = _keyStr.charAt(enc3);
-          output[p++] = _keyStr.charAt(enc4);
-        } while (i < input.length);
-
-        return output.join('');
-      }
     };
     /**
     * @function external:jQuery.getSvgIcon
@@ -22309,8 +22724,12 @@
 
   if (!window.console) {
     window.console = {
-      log: function log(str) {},
-      dir: function dir(str) {}
+      log: function log(str) {
+        /* */
+      },
+      dir: function dir(str) {
+        /* */
+      }
     };
   }
   /**
@@ -22323,7 +22742,7 @@
   */
 
 
-  function jqPluginJGraduate ($) {
+  function jQueryPluginJGraduate($) {
     if (!$.loadingStylesheets) {
       $.loadingStylesheets = [];
     }
@@ -22489,25 +22908,48 @@
 
     };
     var isGecko = navigator.userAgent.includes('Gecko/');
+    /**
+    * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs
+    */
+
+    /**
+    * @param {SVGElement} elem
+    * @param {module:jGraduate.Attrs} attrs
+    * @returns {undefined}
+    */
 
     function setAttrs(elem, attrs) {
       if (isGecko) {
-        for (var aname in attrs) {
-          elem.setAttribute(aname, attrs[aname]);
-        }
+        Object.entries(attrs).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              aname = _ref2[0],
+              val = _ref2[1];
+
+          elem.setAttribute(aname, val);
+        });
       } else {
-        for (var _aname in attrs) {
-          var val = attrs[_aname],
-              prop = elem[_aname];
+        Object.entries(attrs).forEach(function (_ref3) {
+          var _ref4 = _slicedToArray(_ref3, 2),
+              aname = _ref4[0],
+              val = _ref4[1];
+
+          var prop = elem[aname];
 
           if (prop && prop.constructor === 'SVGLength') {
             prop.baseVal.value = val;
           } else {
-            elem.setAttribute(_aname, val);
+            elem.setAttribute(aname, val);
           }
-        }
+        });
       }
     }
+    /**
+    * @param {string} name
+    * @param {module:jGraduate.Attrs} attrs
+    * @param {Element} newparent
+    * @returns {SVGElement}
+    */
+
 
     function mkElem(name, attrs, newparent) {
       var elem = document.createElementNS(ns.svg, name);
@@ -22563,7 +23005,8 @@
             idref = '#' + $this.attr('id') + ' ';
 
         if (!idref) {
-          alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
+          /* await */
+          $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
           return;
         }
 
@@ -22689,19 +23132,21 @@
                 break;
 
               case 'inverse':
-                // Invert current color for second stop
-                var inverted = '';
+                {
+                  // Invert current color for second stop
+                  var inverted = '';
 
-                for (var i = 0; i < 6; i += 2) {
-                  // const ch = color.substr(i, 2);
-                  var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
-                  if (inv.length < 2) inv = 0 + inv;
-                  inverted += inv;
+                  for (var i = 0; i < 6; i += 2) {
+                    // const ch = color.substr(i, 2);
+                    var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
+                    if (inv.length < 2) inv = 0 + inv;
+                    inverted += inv;
+                  }
+
+                  mkStop(1, '#' + inverted, 1);
+                  break;
                 }
 
-                mkStop(1, '#' + inverted, 1);
-                break;
-
               case 'white':
                 mkStop(1, '#ffffff', 1);
                 break;
@@ -22803,16 +23248,25 @@
             $elem.css(cssName, this.value * MAX);
           }).change();
         });
+        /**
+         *
+         * @param {Float} n
+         * @param {Float|string} colr
+         * @param {Float} opac
+         * @param {boolean} [sel]
+         * @param {SVGStopElement} [stopElem]
+         * @returns {SVGStopElement}
+         */
 
-        function mkStop(n, color, opac, sel, stopElem) {
+        function mkStop(n, colr, opac, sel, stopElem) {
           var stop = stopElem || mkElem('stop', {
-            'stop-color': color,
+            'stop-color': colr,
             'stop-opacity': opac,
             offset: n
           }, curGradient);
 
           if (stopElem) {
-            color = stopElem.getAttribute('stop-color');
+            colr = stopElem.getAttribute('stop-color');
             opac = stopElem.getAttribute('stop-opacity');
             n = stopElem.getAttribute('offset');
           } else {
@@ -22828,7 +23282,7 @@
           }, stopGroup);
           var path = mkElem('path', {
             d: pickerD,
-            fill: color,
+            fill: colr,
             'fill-opacity': opac,
             transform: 'translate(' + (10 + n * MAX) + ', 26)',
             stroke: '#000',
@@ -22843,8 +23297,9 @@
             return false;
           }).data('stop', stop).data('bg', pathbg).dblclick(function () {
             $('div.jGraduate_LightBox').show();
-            var colorhandle = this;
-            var stopOpacity = +stop.getAttribute('stop-opacity') || 1;
+            var colorhandle = this; // eslint-disable-line consistent-this
+
+            var stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;
             var stopColor = stop.getAttribute('stop-color') || 1;
             var thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);
 
@@ -22852,7 +23307,7 @@
               thisAlpha = '0' + thisAlpha;
             }
 
-            color = stopColor.substr(1) + thisAlpha;
+            colr = stopColor.substr(1) + thisAlpha;
             $('#' + id + '_jGraduate_stopPicker').css({
               left: 100,
               bottom: 15
@@ -22864,12 +23319,12 @@
                 clientPath: $settings.images.clientPath
               },
               color: {
-                active: color,
+                active: colr,
                 alphaSupport: true
               }
-            }, function (color, arg2) {
-              stopColor = color.val('hex') ? '#' + color.val('hex') : 'none';
-              stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;
+            }, function (clr, arg2) {
+              stopColor = clr.val('hex') ? '#' + clr.val('hex') : 'none';
+              stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;
               colorhandle.setAttribute('fill', stopColor);
               colorhandle.setAttribute('fill-opacity', stopOpacity);
               stop.setAttribute('stop-color', stopColor);
@@ -22884,8 +23339,8 @@
           $(curGradient).find('stop').each(function () {
             var curS = $(this);
 
-            if (+this.getAttribute('offset') > n) {
-              if (!color) {
+            if (Number(this.getAttribute('offset')) > n) {
+              if (!colr) {
                 var newcolor = this.getAttribute('stop-color');
                 var newopac = this.getAttribute('stop-opacity');
                 stop.setAttribute('stop-color', newcolor);
@@ -22897,10 +23352,17 @@
               curS.before(stop);
               return false;
             }
+
+            return true;
           });
           if (sel) selectStop(path);
           return stop;
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function remStop() {
           delStop.setAttribute('display', 'none');
@@ -22920,6 +23382,11 @@
           display: 'none'
         }, undefined); // stopMakerSVG);
 
+        /**
+        * @param {Element} item
+        * @returns {undefined}
+        */
+
         function selectStop(item) {
           if (curStop) curStop.setAttribute('stroke', '#000');
           item.setAttribute('stroke', 'blue');
@@ -22930,6 +23397,10 @@
         }
 
         var stopOffset;
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function remDrags() {
           $win.unbind('mousemove', dragColor);
@@ -22946,6 +23417,10 @@
             angle = 0;
         var cX = cx;
         var cY = cy;
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function xform() {
           var rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';
@@ -22958,6 +23433,11 @@
             curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')'); // $('#ang').removeClass('dis');
           }
         }
+        /**
+        * @param {Event} evt
+        * @returns {undefined}
+        */
+
 
         function dragColor(evt) {
           var x = evt.pageX - stopOffset.left;
@@ -23045,28 +23525,28 @@
           var fracx = x / SIZEX;
           var fracy = y / SIZEY;
           var type = draggingCoord.data('coord');
-          var grad = curGradient;
+          var grd = curGradient;
 
           switch (type) {
             case 'start':
               attrInput.x1.val(fracx);
               attrInput.y1.val(fracy);
-              grad.setAttribute('x1', fracx);
-              grad.setAttribute('y1', fracy);
+              grd.setAttribute('x1', fracx);
+              grd.setAttribute('y1', fracy);
               break;
 
             case 'end':
               attrInput.x2.val(fracx);
               attrInput.y2.val(fracy);
-              grad.setAttribute('x2', fracx);
-              grad.setAttribute('y2', fracy);
+              grd.setAttribute('x2', fracx);
+              grd.setAttribute('y2', fracy);
               break;
 
             case 'center':
               attrInput.cx.val(fracx);
               attrInput.cy.val(fracy);
-              grad.setAttribute('cx', fracx);
-              grad.setAttribute('cy', fracy);
+              grd.setAttribute('cx', fracx);
+              grd.setAttribute('cy', fracy);
               cX = fracx;
               cY = fracy;
               xform();
@@ -23075,8 +23555,8 @@
             case 'focus':
               attrInput.fx.val(fracx);
               attrInput.fy.val(fracy);
-              grad.setAttribute('fx', fracx);
-              grad.setAttribute('fy', fracy);
+              grd.setAttribute('fx', fracx);
+              grd.setAttribute('fy', fracy);
               xform();
           }
 
@@ -23146,22 +23626,20 @@
           focusCoord.toggle(showFocus);
           attrInput.fx.val('');
           attrInput.fy.val('');
-          var grad = curGradient;
+          var grd = curGradient;
 
           if (!showFocus) {
-            lastfx = grad.getAttribute('fx');
-            lastfy = grad.getAttribute('fy');
-            grad.removeAttribute('fx');
-            grad.removeAttribute('fy');
+            lastfx = grd.getAttribute('fx');
+            lastfy = grd.getAttribute('fy');
+            grd.removeAttribute('fx');
+            grd.removeAttribute('fy');
           } else {
-            var _fx = lastfx || 0.5;
-
-            var _fy = lastfy || 0.5;
-
-            grad.setAttribute('fx', _fx);
-            grad.setAttribute('fy', _fy);
-            attrInput.fx.val(_fx);
-            attrInput.fy.val(_fy);
+            var fX = lastfx || 0.5;
+            var fY = lastfy || 0.5;
+            grd.setAttribute('fx', fX);
+            grd.setAttribute('fy', fY);
+            attrInput.fx.val(fX);
+            attrInput.fy.val(fY);
           }
         });
         stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');
@@ -23180,9 +23658,9 @@
 
         var setSlider = function setSlider(e) {
           var _slider = slider,
-              offset = _slider.offset;
+              left = _slider.offset.left;
           var div = slider.parent;
-          var x = e.pageX - offset.left - parseInt(div.css('border-left-width'));
+          var x = e.pageX - left - parseInt(div.css('border-left-width'));
           if (x > SLIDERW) x = SLIDERW;
           if (x <= 0) x = 0;
           var posx = x - 5;
@@ -23226,7 +23704,7 @@
               break;
 
             case 'angle':
-              x = x - 0.5;
+              x -= 0.5;
               angle = x *= 180;
               xform();
               x /= 100;
@@ -23318,7 +23796,7 @@
           });
           $(data.input).val(data.val).change(function () {
             var isRad = curType === 'radialGradient';
-            var val = +this.value;
+            var val = Number(this.value);
             var xpos = 0;
 
             switch (type) {
@@ -23416,10 +23894,10 @@
             active: color,
             alphaSupport: true
           }
-        }, function (color) {
+        }, function (clr) {
           $this.paint.type = 'solidColor';
-          $this.paint.alpha = color.val('ahex') ? Math.round(color.val('a') / 255 * 100) : 100;
-          $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';
+          $this.paint.alpha = clr.val('ahex') ? Math.round(clr.val('a') / 255 * 100) : 100;
+          $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';
           $this.paint.radialGradient = null;
           okClicked();
         }, null, function () {
@@ -23453,7 +23931,7 @@
               curGradient.setAttribute('spreadMethod', sm);
             }
 
-            showFocus = type === 'rg' && curGradient.getAttribute('fx') != null && !(cx === fx && cy === fy);
+            showFocus = type === 'rg' && curGradient.getAttribute('fx') !== null && !(cx === fx && cy === fy);
             $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);
 
             if (showFocus) {
@@ -23569,7 +24047,7 @@
    * @param {external:jQuery} $ The jQuery object to which to add the plug-in
    * @returns {external:jQuery}
   */
-  function jqPluginSpinBtn ($) {
+  function jQueryPluginSpinButton($) {
     if (!$.loadingStylesheets) {
       $.loadingStylesheets = [];
     }
@@ -23582,12 +24060,14 @@
     /**
     * @callback module:jQuerySpinButton.StepCallback
     * @param {external:jQuery} thisArg Value of `this`
+    * @param {Float} i Value to adjust
+    * @returns {Float}
     */
 
     /**
     * @callback module:jQuerySpinButton.ValueCallback
-    * @param {external:jQuery} thisArg Value of `this`
-    * @param {Float} value Value that was changed
+    * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.
+    * @returns {undefined}
     */
 
     /**
@@ -23595,7 +24075,7 @@
      * @property {Float} min Set lower limit
      * @property {Float} max Set upper limit.
      * @property {Float} step Set increment size.
-     * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust
+     * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.
      * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)
      * @property {Float} smallStep Set shift-click increment size.
      * @property {PlainObject} stateObj Object to allow passing in live-updating scale
@@ -23618,6 +24098,12 @@
 
     $.fn.SpinButton = function (cfg) {
       cfg = cfg || {};
+      /**
+       *
+       * @param {Element} el
+       * @param {"offsetLeft"|"offsetTop"} prop
+       * @returns {Integer}
+       */
 
       function coord(el, prop) {
         var b = document.body;
@@ -23876,7 +24362,7 @@
    *
   */
   /**
-  * @callback module:jQueryContextMenu.jQueryContextMenuCallback
+  * @callback module:jQueryContextMenu.jQueryContextMenuListener
   * @param {string} href The `href` value after the first character (for bypassing an initial `#`)
   * @param {external:jQuery} srcElement The wrapped jQuery srcElement
   * @param {{x: Float, y: Float, docX: Float, docY: Float}} coords
@@ -23909,10 +24395,10 @@
       /**
       * @memberof external:jQuery.fn
       * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o
-      * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback
+      * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener
       * @returns {external:jQuery}
       */
-      contextMenu: function contextMenu(o, callback) {
+      contextMenu: function contextMenu(o, listener) {
         // Defaults
         if (o.menu === undefined) return false;
         if (o.inSpeed === undefined) o.inSpeed = 150;
@@ -23928,102 +24414,104 @@
 
           menu.addClass('contextMenu'); // Simulate a true right click
 
-          $(this).bind('mousedown', function (e) {
-            var evt = e;
+          $(this).bind('mousedown', function (evt) {
             $(this).mouseup(function (e) {
               var srcElement = $(this);
               srcElement.unbind('mouseup');
 
-              if (evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac()) {
-                e.stopPropagation(); // Hide context menus that may be showing
-
-                $('.contextMenu').hide(); // Get this context menu
-
-                if (el.hasClass('disabled')) return false; // Detect mouse position
-
-                var x = e.pageX,
-                    y = e.pageY;
-                var xOff = win.width() - menu.width(),
-                    yOff = win.height() - menu.height();
-                if (x > xOff - 15) x = xOff - 15;
-                if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
-                // Show the menu
-
-                doc.unbind('click');
-                menu.css({
-                  top: y,
-                  left: x
-                }).fadeIn(o.inSpeed); // Hover events
-
-                menu.find('A').mouseover(function () {
-                  menu.find('LI.hover').removeClass('hover');
-                  $(this).parent().addClass('hover');
-                }).mouseout(function () {
-                  menu.find('LI.hover').removeClass('hover');
-                }); // Keyboard
-
-                doc.keypress(function (e) {
-                  switch (e.keyCode) {
-                    case 38:
-                      // up
-                      if (!menu.find('LI.hover').length) {
-                        menu.find('LI:last').addClass('hover');
-                      } else {
-                        menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
-                        if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
-                      }
-
-                      break;
-
-                    case 40:
-                      // down
-                      if (!menu.find('LI.hover').length) {
-                        menu.find('LI:first').addClass('hover');
-                      } else {
-                        menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
-                        if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
-                      }
-
-                      break;
-
-                    case 13:
-                      // enter
-                      menu.find('LI.hover A').trigger('click');
-                      break;
-
-                    case 27:
-                      // esc
-                      doc.trigger('click');
-                      break;
-                  }
-                }); // When items are selected
-
-                menu.find('A').unbind('mouseup');
-                menu.find('LI:not(.disabled) A').mouseup(function () {
-                  doc.unbind('click').unbind('keypress');
-                  $('.contextMenu').hide(); // Callback
-
-                  if (callback) {
-                    callback($(this).attr('href').substr(1), $(srcElement), {
-                      x: x - offset.left,
-                      y: y - offset.top,
-                      docX: x,
-                      docY: y
-                    });
-                  }
-
-                  return false;
-                }); // Hide bindings
-
-                setTimeout(function () {
-                  // Delay for Mozilla
-                  doc.click(function () {
-                    doc.unbind('click').unbind('keypress');
-                    menu.fadeOut(o.outSpeed);
-                    return false;
-                  });
-                }, 0);
+              if (!(evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac())) {
+                return undefined;
               }
+
+              e.stopPropagation(); // Hide context menus that may be showing
+
+              $('.contextMenu').hide(); // Get this context menu
+
+              if (el.hasClass('disabled')) return false; // Detect mouse position
+
+              var x = e.pageX,
+                  y = e.pageY;
+              var xOff = win.width() - menu.width(),
+                  yOff = win.height() - menu.height();
+              if (x > xOff - 15) x = xOff - 15;
+              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
+              // Show the menu
+
+              doc.unbind('click');
+              menu.css({
+                top: y,
+                left: x
+              }).fadeIn(o.inSpeed); // Hover events
+
+              menu.find('A').mouseover(function () {
+                menu.find('LI.hover').removeClass('hover');
+                $(this).parent().addClass('hover');
+              }).mouseout(function () {
+                menu.find('LI.hover').removeClass('hover');
+              }); // Keyboard
+
+              doc.keypress(function (ev) {
+                switch (ev.keyCode) {
+                  case 38:
+                    // up
+                    if (!menu.find('LI.hover').length) {
+                      menu.find('LI:last').addClass('hover');
+                    } else {
+                      menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
+                      if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
+                    }
+
+                    break;
+
+                  case 40:
+                    // down
+                    if (!menu.find('LI.hover').length) {
+                      menu.find('LI:first').addClass('hover');
+                    } else {
+                      menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
+                      if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
+                    }
+
+                    break;
+
+                  case 13:
+                    // enter
+                    menu.find('LI.hover A').trigger('click');
+                    break;
+
+                  case 27:
+                    // esc
+                    doc.trigger('click');
+                    break;
+                }
+              }); // When items are selected
+
+              menu.find('A').unbind('mouseup');
+              menu.find('LI:not(.disabled) A').mouseup(function () {
+                doc.unbind('click').unbind('keypress');
+                $('.contextMenu').hide();
+
+                if (listener) {
+                  listener($(this).attr('href').substr(1), $(srcElement), {
+                    x: x - offset.left,
+                    y: y - offset.top,
+                    docX: x,
+                    docY: y
+                  });
+                }
+
+                return false;
+              }); // Hide bindings
+
+              setTimeout(function () {
+                // Delay for Mozilla
+                doc.click(function () {
+                  doc.unbind('click').unbind('keypress');
+                  menu.fadeOut(o.outSpeed);
+                  return false;
+                });
+              }, 0);
+              return undefined;
             });
           }); // Disable text selection
 
@@ -24177,6 +24665,16 @@
     if (precision === undefined) precision = 0;
     return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);
   }
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+
+  var isNullish$1 = function isNullish(val) {
+    return val === null || val === undefined;
+  };
   /**
   * @function module:jPicker.jPicker
   * @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})
@@ -24213,6 +24711,7 @@
     /**
     * Encapsulate slider functionality for the ColorMap and ColorBar -
     * could be useful to use a jQuery UI draggable for this with certain extensions.
+    * @memberof module:jPicker
     * @param {external:jQuery} bar
     * @param {module:jPicker.SliderOptions} options
     * @returns {undefined}
@@ -24222,13 +24721,23 @@
     var Slider = function Slider(bar, options) {
       _classCallCheck(this, Slider);
 
-      var $this = this;
+      var that = this;
+      /**
+       * Fire events on the supplied `context`
+       * @param {module:jPicker.JPickerInit} context
+       * @returns {undefined}
+       */
 
       function fireChangeEvents(context) {
-        for (var i = 0; i < changeEvents.length; i++) {
-          changeEvents[i].call($this, $this, context);
-        }
-      } // bind the mousedown to the bar not the arrow for quick snapping to the clicked location
+        changeEvents.forEach(function (changeEvent) {
+          changeEvent.call(that, that, context);
+        });
+      }
+      /**
+       * Bind the mousedown to the bar not the arrow for quick snapping to the clicked location.
+       * @param {external:jQuery.Event} e
+       * @returns {undefined}
+       */
 
 
       function mouseDown(e) {
@@ -24236,27 +24745,38 @@
         offset = {
           l: off.left | 0,
           t: off.top | 0
-        };
+        }; // eslint-disable-line no-bitwise
+
         clearTimeout(timeout); // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run
 
         timeout = setTimeout(function () {
-          setValuesFromMousePosition.call($this, e);
+          setValuesFromMousePosition.call(that, e);
         }, 0); // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing
 
         $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);
         e.preventDefault(); // don't try to select anything or drag the image to the desktop
-      } // set the values as the mouse moves
+      }
+      /**
+       * Set the values as the mouse moves.
+       * @param {external:jQuery.Event} e
+       * @returns {false}
+       */
 
 
       function mouseMove(e) {
         clearTimeout(timeout);
         timeout = setTimeout(function () {
-          setValuesFromMousePosition.call($this, e);
+          setValuesFromMousePosition.call(that, e);
         }, 0);
         e.stopPropagation();
         e.preventDefault();
         return false;
-      } // unbind the document events - they aren't needed when not dragging
+      }
+      /**
+       * Unbind the document events - they aren't needed when not dragging.
+       * @param {external:jQuery.Event} e
+       * @returns {false}
+       */
 
 
       function mouseUp(e) {
@@ -24264,7 +24784,12 @@
         e.stopPropagation();
         e.preventDefault();
         return false;
-      } // calculate mouse position and set value within the current range
+      }
+      /**
+       * Calculate mouse position and set value within the current range.
+       * @param {Event} e
+       * @returns {undefined}
+       */
 
 
       function setValuesFromMousePosition(e) {
@@ -24276,11 +24801,16 @@
 
         if (locX < 0) locX = 0;else if (locX > barW) locX = barW;
         if (locY < 0) locY = 0;else if (locY > barH) locY = barH;
-        val.call($this, 'xy', {
+        val.call(that, 'xy', {
           x: locX / barW * rangeX + minX,
           y: locY / barH * rangeY + minY
         });
       }
+      /**
+       *
+       * @returns {undefined}
+       */
+
 
       function draw() {
         var barW = bar.w,
@@ -24290,6 +24820,7 @@
         var arrowOffsetX = 0,
             arrowOffsetY = 0;
         setTimeout(function () {
+          /* eslint-disable no-bitwise */
           if (rangeX > 0) {
             // range is greater than zero
             // constrain to bounds
@@ -24312,14 +24843,23 @@
             left: arrowOffsetX + 'px',
             top: arrowOffsetY + 'px'
           });
-        }, 0);
+          /* eslint no-bitwise: ["error"] */
+        });
       }
+      /**
+       * Get or set a value.
+       * @param {?("xy"|"x"|"y")} name
+       * @param {module:math.XYObject} value
+       * @param {module:jPicker.Slider} context
+       * @returns {module:math.XYObject|Float|undefined}
+       */
+
 
       function val(name, value, context) {
         var set = value !== undefined;
 
         if (!set) {
-          if (name === undefined || name == null) name = 'xy';
+          if (isNullish$1(name)) name = 'xy';
 
           switch (name.toLowerCase()) {
             case 'x':
@@ -24337,10 +24877,10 @@
           }
         }
 
-        if (context != null && context === $this) return;
+        if (!isNullish$1(context) && context === that) return undefined;
         var changed = false;
         var newX, newY;
-        if (name == null) name = 'xy';
+        if (isNullish$1(name)) name = 'xy';
 
         switch (name.toLowerCase()) {
           case 'x':
@@ -24358,7 +24898,7 @@
             break;
         }
 
-        if (newX != null) {
+        if (!isNullish$1(newX)) {
           if (newX < minX) newX = minX;else if (newX > maxX) newX = maxX;
 
           if (x !== newX) {
@@ -24367,7 +24907,7 @@
           }
         }
 
-        if (newY != null) {
+        if (!isNullish$1(newY)) {
           if (newY < minY) newY = minY;else if (newY > maxY) newY = maxY;
 
           if (y !== newY) {
@@ -24376,14 +24916,40 @@
           }
         }
 
-        changed && fireChangeEvents.call($this, context || $this);
+        changed && fireChangeEvents.call(that, context || that);
+        return undefined;
       }
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeX
+      * @property {Float} minX
+      * @property {Float} maxX
+      * @property {Float} rangeX
+      */
+
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeY
+      * @property {Float} minY
+      * @property {Float} maxY
+      * @property {Float} rangeY
+      */
+
+      /**
+      * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY
+      */
+
+      /**
+       *
+       * @param {"minx"|"maxx"|"rangex"|"miny"|"maxy"|"rangey"|"all"} name
+       * @param {module:jPicker.MinMaxRangeXY} value
+       * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}
+       */
+
 
       function range(name, value) {
         var set = value !== undefined;
 
         if (!set) {
-          if (name === undefined || name == null) name = 'all';
+          if (isNullish$1(name)) name = 'all';
 
           switch (name.toLowerCase()) {
             case 'minx':
@@ -24427,7 +24993,8 @@
 
         var // changed = false,
         newMinX, newMaxX, newMinY, newMaxY;
-        if (name == null) name = 'all';
+        if (isNullish$1(name)) name = 'all';
+        /* eslint-disable no-bitwise */
 
         switch (name.toLowerCase()) {
           case 'minx':
@@ -24464,33 +25031,49 @@
             newMaxY = value && value.maxY && value.maxY | 0 || 0;
             break;
         }
+        /* eslint no-bitwise: ["error"] */
 
-        if (newMinX != null && minX !== newMinX) {
+
+        if (!isNullish$1(newMinX) && minX !== newMinX) {
           minX = newMinX;
           rangeX = maxX - minX;
         }
 
-        if (newMaxX != null && maxX !== newMaxX) {
+        if (!isNullish$1(newMaxX) && maxX !== newMaxX) {
           maxX = newMaxX;
           rangeX = maxX - minX;
         }
 
-        if (newMinY != null && minY !== newMinY) {
+        if (!isNullish$1(newMinY) && minY !== newMinY) {
           minY = newMinY;
           rangeY = maxY - minY;
         }
 
-        if (newMaxY != null && maxY !== newMaxY) {
+        if (!isNullish$1(newMaxY) && maxY !== newMaxY) {
           maxY = newMaxY;
           rangeY = maxY - minY;
         }
+
+        return undefined;
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function bind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback === 'function') changeEvents.push(callback);
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function unbind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback !== 'function') return;
         var i;
 
@@ -24498,6 +25081,11 @@
           changeEvents.splice(i, 1);
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function destroy() {
         // unbind all possible events and null objects
@@ -24521,8 +25109,9 @@
           arrow = bar.find('img:first'),
           // the arrow image to drag
       changeEvents = [];
-      $.extend(true, $this, // public properties, methods, and event bindings - these we need to access from other controls
-      {
+      $.extend(true, // public properties, methods, and event bindings - these we need
+      //   to access from other controls
+      that, {
         val: val,
         range: range,
         bind: bind,
@@ -24537,29 +25126,45 @@
       bar.h = options.map && options.map.height || bar.height(); // bind mousedown event
 
       bar.bind('mousedown', mouseDown);
-      bind.call($this, draw);
-    }; // controls for all the input elements for the typing in color values
+      bind.call(that, draw);
+    };
+    /**
+     * Controls for all the input elements for the typing in color values.
+     * @param {external:jQuery} picker
+     * @param {external:jQuery.jPicker.Color} color
+     * @param {external:jQuery.fn.$.fn.jPicker} bindedHex
+     * @param {Float} alphaPrecision
+     * @constructor
+     */
 
 
-    function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
-      var $this = this; // private properties and methods
+    var ColorValuePicker = function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
+      _classCallCheck(this, ColorValuePicker);
+
+      var that = this; // private properties and methods
 
       var inputs = picker.find('td.Text input'); // input box key down - use arrows to alter color
 
+      /**
+       *
+       * @param {Event} e
+       * @returns {Event|false|undefined}
+       */
+
       function keyDown(e) {
-        if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+        if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
         if (!validateKey(e)) return e;
 
         switch (e.target) {
           case red.get(0):
             switch (e.keyCode) {
               case 38:
-                red.val(setValueInRange.call($this, (red.val() << 0) + 1, 0, 255));
+                red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));
                 color.val('r', red.val(), e.target);
                 return false;
 
               case 40:
-                red.val(setValueInRange.call($this, (red.val() << 0) - 1, 0, 255));
+                red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));
                 color.val('r', red.val(), e.target);
                 return false;
             }
@@ -24569,12 +25174,12 @@
           case green.get(0):
             switch (e.keyCode) {
               case 38:
-                green.val(setValueInRange.call($this, (green.val() << 0) + 1, 0, 255));
+                green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));
                 color.val('g', green.val(), e.target);
                 return false;
 
               case 40:
-                green.val(setValueInRange.call($this, (green.val() << 0) - 1, 0, 255));
+                green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));
                 color.val('g', green.val(), e.target);
                 return false;
             }
@@ -24584,12 +25189,12 @@
           case blue.get(0):
             switch (e.keyCode) {
               case 38:
-                blue.val(setValueInRange.call($this, (blue.val() << 0) + 1, 0, 255));
+                blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));
                 color.val('b', blue.val(), e.target);
                 return false;
 
               case 40:
-                blue.val(setValueInRange.call($this, (blue.val() << 0) - 1, 0, 255));
+                blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));
                 color.val('b', blue.val(), e.target);
                 return false;
             }
@@ -24599,12 +25204,12 @@
           case alpha && alpha.get(0):
             switch (e.keyCode) {
               case 38:
-                alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) + 1, 0, 100));
+                alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));
                 color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
                 return false;
 
               case 40:
-                alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) - 1, 0, 100));
+                alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));
                 color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
                 return false;
             }
@@ -24614,12 +25219,12 @@
           case hue.get(0):
             switch (e.keyCode) {
               case 38:
-                hue.val(setValueInRange.call($this, (hue.val() << 0) + 1, 0, 360));
+                hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));
                 color.val('h', hue.val(), e.target);
                 return false;
 
               case 40:
-                hue.val(setValueInRange.call($this, (hue.val() << 0) - 1, 0, 360));
+                hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));
                 color.val('h', hue.val(), e.target);
                 return false;
             }
@@ -24629,12 +25234,12 @@
           case saturation.get(0):
             switch (e.keyCode) {
               case 38:
-                saturation.val(setValueInRange.call($this, (saturation.val() << 0) + 1, 0, 100));
+                saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));
                 color.val('s', saturation.val(), e.target);
                 return false;
 
               case 40:
-                saturation.val(setValueInRange.call($this, (saturation.val() << 0) - 1, 0, 100));
+                saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));
                 color.val('s', saturation.val(), e.target);
                 return false;
             }
@@ -24644,58 +25249,66 @@
           case value.get(0):
             switch (e.keyCode) {
               case 38:
-                value.val(setValueInRange.call($this, (value.val() << 0) + 1, 0, 100));
+                value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));
                 color.val('v', value.val(), e.target);
                 return false;
 
               case 40:
-                value.val(setValueInRange.call($this, (value.val() << 0) - 1, 0, 100));
+                value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));
                 color.val('v', value.val(), e.target);
                 return false;
             }
 
             break;
         }
+
+        return undefined;
       } // input box key up - validate value and set color
 
+      /**
+      * @param {Event} e
+      * @returns {Event|undefined}
+      * @todo Why is this returning an event?
+      */
+
 
       function keyUp(e) {
-        if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+        if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
         if (!validateKey(e)) return e;
 
         switch (e.target) {
           case red.get(0):
-            red.val(setValueInRange.call($this, red.val(), 0, 255));
+            red.val(setValueInRange.call(that, red.val(), 0, 255));
             color.val('r', red.val(), e.target);
             break;
 
           case green.get(0):
-            green.val(setValueInRange.call($this, green.val(), 0, 255));
+            green.val(setValueInRange.call(that, green.val(), 0, 255));
             color.val('g', green.val(), e.target);
             break;
 
           case blue.get(0):
-            blue.val(setValueInRange.call($this, blue.val(), 0, 255));
+            blue.val(setValueInRange.call(that, blue.val(), 0, 255));
             color.val('b', blue.val(), e.target);
             break;
 
           case alpha && alpha.get(0):
-            alpha.val(setValueInRange.call($this, alpha.val(), 0, 100));
+            alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));
             color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
             break;
 
           case hue.get(0):
-            hue.val(setValueInRange.call($this, hue.val(), 0, 360));
+            hue.val(setValueInRange.call(that, hue.val(), 0, 360));
             color.val('h', hue.val(), e.target);
             break;
 
           case saturation.get(0):
-            saturation.val(setValueInRange.call($this, saturation.val(), 0, 100));
+            saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));
             color.val('s', saturation.val(), e.target);
             break;
 
           case value.get(0):
-            value.val(setValueInRange.call($this, value.val(), 0, 100));
+            value.val(setValueInRange.call(that, value.val(), 0, 100));
             color.val('v', value.val(), e.target);
             break;
 
@@ -24713,14 +25326,21 @@
 
           case ahex && ahex.get(0):
             ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));
-            color.val('a', ahex.val() != null ? parseInt(ahex.val(), 16) : null, e.target);
+            color.val('a', !isNullish$1(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);
             break;
         }
+
+        return undefined;
       } // input box blur - reset to original if value empty
 
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
+
 
       function blur(e) {
-        if (color.val() != null) {
+        if (!isNullish$1(color.val())) {
           switch (e.target) {
             case red.get(0):
               red.val(color.val('r'));
@@ -24762,6 +25382,11 @@
           }
         }
       }
+      /**
+      * @param {Event} e
+      * @returns {boolean}
+      */
+
 
       function validateKey(e) {
         switch (e.keyCode) {
@@ -24778,7 +25403,14 @@
         }
 
         return true;
-      } // constrain value within range
+      }
+      /**
+      * Constrain value within range.
+      * @param {Float|string} value
+      * @param {Float} min
+      * @param {Float} max
+      * @returns {Float|string} Returns a number or numeric string
+      */
 
 
       function setValueInRange(value, min, max) {
@@ -24787,23 +25419,33 @@
         if (value < min) return min;
         return value;
       }
+      /**
+      * @param {external:jQuery} ui
+      * @param {Element} context
+      * @returns {undefined}
+      */
+
 
       function colorChanged(ui, context) {
         var all = ui.val('all');
-        if (context !== red.get(0)) red.val(all != null ? all.r : '');
-        if (context !== green.get(0)) green.val(all != null ? all.g : '');
-        if (context !== blue.get(0)) blue.val(all != null ? all.b : '');
-        if (alpha && context !== alpha.get(0)) alpha.val(all != null ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
-        if (context !== hue.get(0)) hue.val(all != null ? all.h : '');
-        if (context !== saturation.get(0)) saturation.val(all != null ? all.s : '');
-        if (context !== value.get(0)) value.val(all != null ? all.v : '');
-        if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(all != null ? all.hex : '');
-        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(all != null ? all.hex : '');
-        if (ahex && context !== ahex.get(0)) ahex.val(all != null ? all.ahex.substring(6) : '');
+        if (context !== red.get(0)) red.val(!isNullish$1(all) ? all.r : '');
+        if (context !== green.get(0)) green.val(!isNullish$1(all) ? all.g : '');
+        if (context !== blue.get(0)) blue.val(!isNullish$1(all) ? all.b : '');
+        if (alpha && context !== alpha.get(0)) alpha.val(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
+        if (context !== hue.get(0)) hue.val(!isNullish$1(all) ? all.h : '');
+        if (context !== saturation.get(0)) saturation.val(!isNullish$1(all) ? all.s : '');
+        if (context !== value.get(0)) value.val(!isNullish$1(all) ? all.v : '');
+        if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(!isNullish$1(all) ? all.hex : '');
+        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish$1(all) ? all.hex : '');
+        if (ahex && context !== ahex.get(0)) ahex.val(!isNullish$1(all) ? all.ahex.substring(6) : '');
       }
+      /**
+      * Unbind all events and null objects.
+      * @returns {undefined}
+      */
+
 
       function destroy() {
-        // unbind all events and null objects
         red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);
         red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);
         color.unbind(colorChanged);
@@ -24827,25 +25469,25 @@
           value = inputs.eq(2),
           hex = inputs.eq(inputs.length > 7 ? 7 : 6),
           ahex = inputs.length > 7 ? inputs.eq(8) : null;
-      $.extend(true, $this, {
+      $.extend(true, that, {
         // public properties and methods
         destroy: destroy
       });
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);
       color.bind(colorChanged);
-    }
+    };
     /**
     * @typedef {PlainObject} module:jPicker.JPickerInit
-    * @property {Integer} a
-    * @property {Integer} b
-    * @property {Integer} g
-    * @property {Integer} h
-    * @property {Integer} r
-    * @property {Integer} s
-    * @property {Integer} v
-    * @property {string} hex
-    * @property {string} ahex
+    * @property {Integer} [a]
+    * @property {Integer} [b]
+    * @property {Integer} [g]
+    * @property {Integer} [h]
+    * @property {Integer} [r]
+    * @property {Integer} [s]
+    * @property {Integer} [v]
+    * @property {string} [hex]
+    * @property {string} [ahex]
     */
 
     /**
@@ -24875,13 +25517,26 @@
       * @param {module:jPicker.JPickerInit} init
       */
       Color: function Color(init) {
-        var $this = this;
+        // eslint-disable-line object-shorthand
+        var that = this;
+        /**
+         *
+         * @param {module:jPicker.Slider} context
+         * @returns {undefined}
+         */
 
         function fireChangeEvents(context) {
           for (var i = 0; i < changeEvents.length; i++) {
-            changeEvents[i].call($this, $this, context);
+            changeEvents[i].call(that, that, context);
           }
         }
+        /**
+         * @param {string|"ahex"|"hex"|"all"|""|null|undefined} name String composed of letters "r", "g", "b", "a", "h", "s", and/or "v"
+         * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]
+         * @param {external:jQuery.jPicker.Color} context
+         * @returns {module:jPicker.JPickerInit|string|null|undefined}
+         */
+
 
         function val(name, value, context) {
           // Kind of ugly
@@ -24889,8 +25544,9 @@
           if (set && value.ahex === '') value.ahex = '00000000';
 
           if (!set) {
-            if (name === undefined || name == null || name === '') name = 'all';
-            if (r == null) return null;
+            var ret;
+            if (isNullish$1(name) || name === '') name = 'all';
+            if (isNullish$1(r)) return null;
 
             switch (name.toLowerCase()) {
               case 'ahex':
@@ -24913,261 +25569,281 @@
                   h: h,
                   s: s,
                   v: v,
-                  hex: val.call($this, 'hex'),
-                  ahex: val.call($this, 'ahex')
+                  hex: val.call(that, 'hex'),
+                  ahex: val.call(that, 'ahex')
                 };
 
               default:
-                var ret = {};
-                var nameLength = name.length;
+                {
+                  ret = {};
+                  var nameLength = name.length;
 
-                for (var i = 0; i < nameLength; i++) {
-                  switch (name.charAt(i)) {
-                    case 'r':
-                      if (nameLength === 1) ret = r;else ret.r = r;
-                      break;
+                  _toConsumableArray(name).forEach(function (ch) {
+                    switch (ch) {
+                      case 'r':
+                        if (nameLength === 1) ret = r;else ret.r = r;
+                        break;
 
-                    case 'g':
-                      if (nameLength === 1) ret = g;else ret.g = g;
-                      break;
+                      case 'g':
+                        if (nameLength === 1) ret = g;else ret.g = g;
+                        break;
 
-                    case 'b':
-                      if (nameLength === 1) ret = b;else ret.b = b;
-                      break;
+                      case 'b':
+                        if (nameLength === 1) ret = b;else ret.b = b;
+                        break;
 
-                    case 'a':
-                      if (nameLength === 1) ret = a;else ret.a = a;
-                      break;
+                      case 'a':
+                        if (nameLength === 1) ret = a;else ret.a = a;
+                        break;
 
-                    case 'h':
-                      if (nameLength === 1) ret = h;else ret.h = h;
-                      break;
+                      case 'h':
+                        if (nameLength === 1) ret = h;else ret.h = h;
+                        break;
 
-                    case 's':
-                      if (nameLength === 1) ret = s;else ret.s = s;
-                      break;
+                      case 's':
+                        if (nameLength === 1) ret = s;else ret.s = s;
+                        break;
 
-                    case 'v':
-                      if (nameLength === 1) ret = v;else ret.v = v;
-                      break;
-                  }
+                      case 'v':
+                        if (nameLength === 1) ret = v;else ret.v = v;
+                        break;
+                    }
+                  });
                 }
-
-                return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call($this, 'all') : ret;
             }
+
+            return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call(that, 'all') : ret;
           }
 
-          if (context != null && context === $this) return;
-          if (name == null) name = '';
+          if (!isNullish$1(context) && context === that) return undefined;
+          if (isNullish$1(name)) name = '';
           var changed = false;
 
-          if (value == null) {
-            if (r != null) {
+          if (isNullish$1(value)) {
+            if (!isNullish$1(r)) {
               r = null;
               changed = true;
             }
 
-            if (g != null) {
+            if (!isNullish$1(g)) {
               g = null;
               changed = true;
             }
 
-            if (b != null) {
+            if (!isNullish$1(b)) {
               b = null;
               changed = true;
             }
 
-            if (a != null) {
+            if (!isNullish$1(a)) {
               a = null;
               changed = true;
             }
 
-            if (h != null) {
+            if (!isNullish$1(h)) {
               h = null;
               changed = true;
             }
 
-            if (s != null) {
+            if (!isNullish$1(s)) {
               s = null;
               changed = true;
             }
 
-            if (v != null) {
+            if (!isNullish$1(v)) {
               v = null;
               changed = true;
             }
 
-            changed && fireChangeEvents.call($this, context || $this);
-            return;
+            changed && fireChangeEvents.call(that, context || that);
+            return undefined;
           }
 
           switch (name.toLowerCase()) {
             case 'ahex':
             case 'hex':
-              var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
+              {
+                var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
 
-              val.call($this, 'rgba', {
-                r: _ret.r,
-                g: _ret.g,
-                b: _ret.b,
-                a: name === 'ahex' ? _ret.a : a != null ? a : 255
-              }, context);
-              break;
+                val.call(that, 'rgba', {
+                  r: _ret.r,
+                  g: _ret.g,
+                  b: _ret.b,
+                  a: name === 'ahex' ? _ret.a : !isNullish$1(a) ? a : 255
+                }, context);
+                break;
+              }
 
             default:
-              if (value && (value.ahex != null || value.hex != null)) {
-                val.call($this, 'ahex', value.ahex || value.hex || '00000000', context);
-                return;
-              }
-
-              var newV = {};
-              var rgb = false,
-                  hsv = false;
-              if (value.r !== undefined && !name.includes('r')) name += 'r';
-              if (value.g !== undefined && !name.includes('g')) name += 'g';
-              if (value.b !== undefined && !name.includes('b')) name += 'b';
-              if (value.a !== undefined && !name.includes('a')) name += 'a';
-              if (value.h !== undefined && !name.includes('h')) name += 'h';
-              if (value.s !== undefined && !name.includes('s')) name += 's';
-              if (value.v !== undefined && !name.includes('v')) name += 'v';
-
-              for (var _i = 0; _i < name.length; _i++) {
-                switch (name.charAt(_i)) {
-                  case 'r':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.r = value.r && value.r | 0 || value | 0 || 0;
-                    if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
-
-                    if (r !== newV.r) {
-                      r = newV.r;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'g':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
-                    if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
-
-                    if (g !== newV.g) {
-                      g = newV.g;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'b':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
-                    if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
-
-                    if (b !== newV.b) {
-                      b = newV.b;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'a':
-                    newV.a = value && value.a != null ? value.a | 0 : value | 0;
-                    if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
-
-                    if (a !== newV.a) {
-                      a = newV.a;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'h':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
-                    if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
-
-                    if (h !== newV.h) {
-                      h = newV.h;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 's':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.s = value.s != null ? value.s | 0 : value | 0;
-                    if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
-
-                    if (s !== newV.s) {
-                      s = newV.s;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'v':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.v = value.v != null ? value.v | 0 : value | 0;
-                    if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
-
-                    if (v !== newV.v) {
-                      v = newV.v;
-                      changed = true;
-                    }
-
-                    break;
-                }
-              }
-
-              if (changed) {
-                if (rgb) {
-                  r = r || 0;
-                  g = g || 0;
-                  b = b || 0;
-
-                  var _ret2 = ColorMethods.rgbToHsv({
-                    r: r,
-                    g: g,
-                    b: b
-                  });
-
-                  h = _ret2.h;
-                  s = _ret2.s;
-                  v = _ret2.v;
-                } else if (hsv) {
-                  h = h || 0;
-                  s = s != null ? s : 100;
-                  v = v != null ? v : 100;
-
-                  var _ret3 = ColorMethods.hsvToRgb({
-                    h: h,
-                    s: s,
-                    v: v
-                  });
-
-                  r = _ret3.r;
-                  g = _ret3.g;
-                  b = _ret3.b;
+              {
+                if (value && (!isNullish$1(value.ahex) || !isNullish$1(value.hex))) {
+                  val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);
+                  return undefined;
                 }
 
-                a = a != null ? a : 255;
-                fireChangeEvents.call($this, context || $this);
-              }
+                var newV = {};
+                var rgb = false,
+                    hsv = false;
+                if (value.r !== undefined && !name.includes('r')) name += 'r';
+                if (value.g !== undefined && !name.includes('g')) name += 'g';
+                if (value.b !== undefined && !name.includes('b')) name += 'b';
+                if (value.a !== undefined && !name.includes('a')) name += 'a';
+                if (value.h !== undefined && !name.includes('h')) name += 'h';
+                if (value.s !== undefined && !name.includes('s')) name += 's';
+                if (value.v !== undefined && !name.includes('v')) name += 'v';
 
-              break;
+                _toConsumableArray(name).forEach(function (ch) {
+                  switch (ch) {
+                    case 'r':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.r = value.r && value.r | 0 || value | 0 || 0;
+                      if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
+
+                      if (r !== newV.r) {
+                        r = newV.r;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'g':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
+                      if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
+
+                      if (g !== newV.g) {
+                        g = newV.g;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'b':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
+                      if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
+
+                      if (b !== newV.b) {
+                        b = newV.b;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'a':
+                      newV.a = value && !isNullish$1(value.a) ? value.a | 0 : value | 0;
+                      if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
+
+                      if (a !== newV.a) {
+                        a = newV.a;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'h':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
+                      if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
+
+                      if (h !== newV.h) {
+                        h = newV.h;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 's':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.s = !isNullish$1(value.s) ? value.s | 0 : value | 0;
+                      if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
+
+                      if (s !== newV.s) {
+                        s = newV.s;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'v':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.v = !isNullish$1(value.v) ? value.v | 0 : value | 0;
+                      if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
+
+                      if (v !== newV.v) {
+                        v = newV.v;
+                        changed = true;
+                      }
+
+                      break;
+                  }
+                });
+
+                if (changed) {
+                  if (rgb) {
+                    r = r || 0;
+                    g = g || 0;
+                    b = b || 0;
+
+                    var _ret2 = ColorMethods.rgbToHsv({
+                      r: r,
+                      g: g,
+                      b: b
+                    });
+
+                    h = _ret2.h;
+                    s = _ret2.s;
+                    v = _ret2.v;
+                  } else if (hsv) {
+                    h = h || 0;
+                    s = !isNullish$1(s) ? s : 100;
+                    v = !isNullish$1(v) ? v : 100;
+
+                    var _ret3 = ColorMethods.hsvToRgb({
+                      h: h,
+                      s: s,
+                      v: v
+                    });
+
+                    r = _ret3.r;
+                    g = _ret3.g;
+                    b = _ret3.b;
+                  }
+
+                  a = !isNullish$1(a) ? a : 255;
+                  fireChangeEvents.call(that, context || that);
+                }
+
+                break;
+              }
           }
+
+          return undefined;
         }
+        /**
+        * @param {GenericCallback} callback
+        * @returns {undefined}
+        */
+
 
         function bind(callback) {
+          // eslint-disable-line promise/prefer-await-to-callbacks
           if (typeof callback === 'function') changeEvents.push(callback);
         }
+        /**
+        * @param {GenericCallback} callback
+        * @returns {undefined}
+        */
+
 
         function unbind(callback) {
+          // eslint-disable-line promise/prefer-await-to-callbacks
           if (typeof callback !== 'function') return;
           var i;
 
@@ -25175,6 +25851,11 @@
             changeEvents.splice(i, 1);
           }
         }
+        /**
+        * Unset `changeEvents`
+        * @returns {undefined}
+        */
+
 
         function destroy() {
           changeEvents = null;
@@ -25188,7 +25869,7 @@
             s,
             v,
             changeEvents = [];
-        $.extend(true, $this, {
+        $.extend(true, that, {
           // public properties and methods
           val: val,
           bind: bind,
@@ -25197,16 +25878,16 @@
         });
 
         if (init) {
-          if (init.ahex != null) {
+          if (!isNullish$1(init.ahex)) {
             val('ahex', init);
-          } else if (init.hex != null) {
-            val((init.a != null ? 'a' : '') + 'hex', init.a != null ? {
+          } else if (!isNullish$1(init.hex)) {
+            val((!isNullish$1(init.a) ? 'a' : '') + 'hex', !isNullish$1(init.a) ? {
               ahex: init.hex + ColorMethods.intToHex(init.a)
             } : init);
-          } else if (init.r != null && init.g != null && init.b != null) {
-            val('rgb' + (init.a != null ? 'a' : ''), init);
-          } else if (init.h != null && init.s != null && init.v != null) {
-            val('hsv' + (init.a != null ? 'a' : ''), init);
+          } else if (!isNullish$1(init.r) && !isNullish$1(init.g) && !isNullish$1(init.b)) {
+            val('rgb' + (!isNullish$1(init.a) ? 'a' : ''), init);
+          } else if (!isNullish$1(init.h) && !isNullish$1(init.s) && !isNullish$1(init.v)) {
+            val('hsv' + (!isNullish$1(init.a) ? 'a' : ''), init);
           }
         }
       },
@@ -25381,8 +26062,8 @@
           } else {
             if (h === 360) h = 0;
             h /= 60;
-            s = s / 100;
-            v = v / 100;
+            s /= 100;
+            v /= 100;
             var i = h | 0,
                 f = h - i,
                 p = v * (1 - s),
@@ -25446,6 +26127,28 @@
      * @see {@link external:jQuery.fn.$.fn.jPicker}
      */
 
+    /**
+    * Will be bound to active {@link jQuery.jPicker.Color}
+    * @callback module:jPicker.LiveCallback
+    * @param {external:jQuery} ui
+    * @param {Element} context
+    * @returns {undefined}
+    */
+
+    /**
+    * @callback module:jPicker.CommitCallback
+    * @param {external:jQuery.jPicker.Color} activeColor
+    * @param {external:jQuery} okButton
+    * @returns {undefined} Return value not used.
+    */
+
+    /**
+     * @callback module:jPicker.CancelCallback
+     * @param {external:jQuery.jPicker.Color} activeColor
+     * @param {external:jQuery} cancelButton
+     * @returns {undefined} Return value not used.
+     */
+
     /**
     * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't
     *   get us treated as a function as well as a namespace (even with `@function name`),
@@ -25453,46 +26156,48 @@
     * @namespace
     * @memberof external:jQuery.fn
     * @param {external:jQuery.fn.jPickerOptions} options
+    * @param {module:jPicker.CommitCallback} [commitCallback]
+    * @param {module:jPicker.LiveCallback} [liveCallback]
+    * @param {module:jPicker.CancelCallback} [cancelCallback]
     * @returns {external:jQuery}
     */
 
-    $.fn.jPicker = function (options) {
-      var $arguments = arguments;
+    $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {
       return this.each(function () {
-        var $this = this,
+        var that = this,
             settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor
 
-        if ($($this).get(0).nodeName.toLowerCase() === 'input') {
+        if ($(that).get(0).nodeName.toLowerCase() === 'input') {
           // Add color picker icon if binding to an input element and bind the events to the input
           $.extend(true, settings, {
             window: {
               bindToInput: true,
               expandable: true,
-              input: $($this)
+              input: $(that)
             }
           });
 
-          if ($($this).val() === '') {
+          if ($(that).val() === '') {
             settings.color.active = new Color({
               hex: null
             });
             settings.color.current = new Color({
               hex: null
             });
-          } else if (ColorMethods.validateHex($($this).val())) {
+          } else if (ColorMethods.validateHex($(that).val())) {
             settings.color.active = new Color({
-              hex: $($this).val(),
+              hex: $(that).val(),
               a: settings.color.active.val('a')
             });
             settings.color.current = new Color({
-              hex: $($this).val(),
+              hex: $(that).val(),
               a: settings.color.active.val('a')
             });
           }
         }
 
         if (settings.window.expandable) {
-          $($this).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
+          $(that).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
         } else {
           settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results
         }
@@ -25502,7 +26207,7 @@
 
         /**
          *
-         * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode [description]
+         * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode
          * @throws {Error} Invalid mode
          * @returns {undefined}
          */
@@ -25516,22 +26221,22 @@
           switch (colorMode) {
             case 'h':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, 0);
-                setAlpha.call($this, colorMapL1, 100);
-                setImgLoc.call($this, colorMapL2, 260);
-                setAlpha.call($this, colorMapL2, 100);
-                setBG.call($this, colorBarDiv, 'transparent');
-                setImgLoc.call($this, colorBarL1, 0);
-                setAlpha.call($this, colorBarL1, 100);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL3, 260);
-                setAlpha.call($this, colorBarL3, 100);
-                setImgLoc.call($this, colorBarL4, 260);
-                setAlpha.call($this, colorBarL4, 100);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, 0);
+                setAlpha.call(that, colorMapL1, 100);
+                setImgLoc.call(that, colorMapL2, 260);
+                setAlpha.call(that, colorMapL2, 100);
+                setBG.call(that, colorBarDiv, 'transparent');
+                setImgLoc.call(that, colorBarL1, 0);
+                setAlpha.call(that, colorBarL1, 100);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL3, 260);
+                setAlpha.call(that, colorBarL3, 100);
+                setImgLoc.call(that, colorBarL4, 260);
+                setAlpha.call(that, colorBarL4, 100);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25543,7 +26248,7 @@
                 minY: 0,
                 maxY: 360
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('s'),
                 y: 100 - active.val('v')
@@ -25553,13 +26258,13 @@
 
             case 's':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, -260);
-                setImgLoc.call($this, colorMapL2, -520);
-                setImgLoc.call($this, colorBarL1, -260);
-                setImgLoc.call($this, colorBarL2, -520);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, -260);
+                setImgLoc.call(that, colorMapL2, -520);
+                setImgLoc.call(that, colorBarL1, -260);
+                setImgLoc.call(that, colorBarL2, -520);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25571,7 +26276,7 @@
                 minY: 0,
                 maxY: 100
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('v')
@@ -25581,15 +26286,15 @@
 
             case 'v':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, '000000');
-                setImgLoc.call($this, colorMapL1, -780);
-                setImgLoc.call($this, colorMapL2, 260);
-                setBG.call($this, colorBarDiv, hex);
-                setImgLoc.call($this, colorBarL1, -520);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, '000000');
+                setImgLoc.call(that, colorMapL1, -780);
+                setImgLoc.call(that, colorMapL2, 260);
+                setBG.call(that, colorBarDiv, hex);
+                setImgLoc.call(that, colorBarL1, -520);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25601,7 +26306,7 @@
                 minY: 0,
                 maxY: 100
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('s')
@@ -25622,7 +26327,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('b'),
                 y: 255 - active.val('g')
@@ -25643,7 +26348,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('b'),
                 y: 255 - active.val('r')
@@ -25664,7 +26369,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('r'),
                 y: 255 - active.val('g')
@@ -25674,14 +26379,14 @@
 
             case 'a':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, -260);
-                setImgLoc.call($this, colorMapL2, -520);
-                setImgLoc.call($this, colorBarL1, 260);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL6, 0);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, -260);
+                setImgLoc.call(that, colorMapL2, -520);
+                setImgLoc.call(that, colorBarL1, 260);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL6, 0);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25693,7 +26398,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('v')
@@ -25713,12 +26418,12 @@
             case 'v':
             case 'a':
               setTimeout(function () {
-                setAlpha.call($this, colorMapL1, 100);
-                setAlpha.call($this, colorBarL1, 100);
-                setImgLoc.call($this, colorBarL3, 260);
-                setAlpha.call($this, colorBarL3, 100);
-                setImgLoc.call($this, colorBarL4, 260);
-                setAlpha.call($this, colorBarL4, 100);
+                setAlpha.call(that, colorMapL1, 100);
+                setAlpha.call(that, colorBarL1, 100);
+                setImgLoc.call(that, colorBarL3, 260);
+                setAlpha.call(that, colorBarL3, 100);
+                setImgLoc.call(that, colorBarL4, 260);
+                setAlpha.call(that, colorBarL4, 100);
               }, 0);
               break;
 
@@ -25726,40 +26431,52 @@
             case 'g':
             case 'b':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setBG.call($this, colorBarDiv, 'transparent');
-                setAlpha.call($this, colorBarL1, 100);
-                setAlpha.call($this, colorMapL1, 100);
-                setImgLoc.call($this, colorMapL1, rgbMap);
-                setImgLoc.call($this, colorMapL2, rgbMap - 260);
-                setImgLoc.call($this, colorBarL1, rgbBar - 780);
-                setImgLoc.call($this, colorBarL2, rgbBar - 520);
-                setImgLoc.call($this, colorBarL3, rgbBar);
-                setImgLoc.call($this, colorBarL4, rgbBar - 260);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setBG.call(that, colorBarDiv, 'transparent');
+                setAlpha.call(that, colorBarL1, 100);
+                setAlpha.call(that, colorMapL1, 100);
+                setImgLoc.call(that, colorMapL1, rgbMap);
+                setImgLoc.call(that, colorMapL2, rgbMap - 260);
+                setImgLoc.call(that, colorBarL1, rgbBar - 780);
+                setImgLoc.call(that, colorBarL2, rgbBar - 520);
+                setImgLoc.call(that, colorBarL3, rgbBar);
+                setImgLoc.call(that, colorBarL4, rgbBar - 260);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               break;
           }
 
-          if (active.val('ahex') == null) return;
-          activeColorChanged.call($this, active);
-        } // Update color when user changes text values
+          if (isNullish$1(active.val('ahex'))) return;
+          activeColorChanged.call(that, active);
+        }
+        /**
+         * Update color when user changes text values.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function activeColorChanged(ui, context) {
-          if (context == null || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call($this, ui, context);
+          if (isNullish$1(context) || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call(that, ui, context);
           setTimeout(function () {
-            updatePreview.call($this, ui);
-            updateMapVisuals.call($this, ui);
-            updateBarVisuals.call($this, ui);
+            updatePreview.call(that, ui);
+            updateMapVisuals.call(that, ui);
+            updateBarVisuals.call(that, ui);
           }, 0);
-        } // user has dragged the ColorMap pointer
+        }
+        /**
+         * User has dragged the ColorMap pointer.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function mapValueChanged(ui, context) {
           var active = color.active;
-          if (context !== colorMap && active.val() == null) return;
+          if (context !== colorMap && isNullish$1(active.val())) return;
           var xy = ui.val('all');
 
           switch (settings.color.mode) {
@@ -25806,12 +26523,18 @@
               }, context);
               break;
           }
-        } // user has dragged the ColorBar slider
+        }
+        /**
+         * User has dragged the ColorBar slider.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function colorBarValueChanged(ui, context) {
           var active = color.active;
-          if (context !== colorBar && active.val() == null) return;
+          if (context !== colorBar && isNullish$1(active.val())) return;
 
           switch (settings.color.mode) {
             case 'h':
@@ -25854,60 +26577,79 @@
               active.val('a', 255 - ui.val('y'), context);
               break;
           }
-        } // position map and bar arrows to match current color
+        }
+        /**
+         * Position map and bar arrows to match current color.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function positionMapAndBarArrows(ui, context) {
           if (context !== colorMap) {
             switch (settings.color.mode) {
               case 'h':
-                var sv = ui.val('sv');
-                colorMap.val('xy', {
-                  x: sv != null ? sv.s : 100,
-                  y: 100 - (sv != null ? sv.v : 100)
-                }, context);
-                break;
+                {
+                  var sv = ui.val('sv');
+                  colorMap.val('xy', {
+                    x: !isNullish$1(sv) ? sv.s : 100,
+                    y: 100 - (!isNullish$1(sv) ? sv.v : 100)
+                  }, context);
+                  break;
+                }
+
+              case 's': // Fall through
 
-              case 's':
               case 'a':
-                var hv = ui.val('hv');
-                colorMap.val('xy', {
-                  x: hv && hv.h || 0,
-                  y: 100 - (hv != null ? hv.v : 100)
-                }, context);
-                break;
+                {
+                  var hv = ui.val('hv');
+                  colorMap.val('xy', {
+                    x: hv && hv.h || 0,
+                    y: 100 - (!isNullish$1(hv) ? hv.v : 100)
+                  }, context);
+                  break;
+                }
 
               case 'v':
-                var hs = ui.val('hs');
-                colorMap.val('xy', {
-                  x: hs && hs.h || 0,
-                  y: 100 - (hs != null ? hs.s : 100)
-                }, context);
-                break;
+                {
+                  var hs = ui.val('hs');
+                  colorMap.val('xy', {
+                    x: hs && hs.h || 0,
+                    y: 100 - (!isNullish$1(hs) ? hs.s : 100)
+                  }, context);
+                  break;
+                }
 
               case 'r':
-                var bg = ui.val('bg');
-                colorMap.val('xy', {
-                  x: bg && bg.b || 0,
-                  y: 255 - (bg && bg.g || 0)
-                }, context);
-                break;
+                {
+                  var bg = ui.val('bg');
+                  colorMap.val('xy', {
+                    x: bg && bg.b || 0,
+                    y: 255 - (bg && bg.g || 0)
+                  }, context);
+                  break;
+                }
 
               case 'g':
-                var br = ui.val('br');
-                colorMap.val('xy', {
-                  x: br && br.b || 0,
-                  y: 255 - (br && br.r || 0)
-                }, context);
-                break;
+                {
+                  var br = ui.val('br');
+                  colorMap.val('xy', {
+                    x: br && br.b || 0,
+                    y: 255 - (br && br.r || 0)
+                  }, context);
+                  break;
+                }
 
               case 'b':
-                var rg = ui.val('rg');
-                colorMap.val('xy', {
-                  x: rg && rg.r || 0,
-                  y: 255 - (rg && rg.g || 0)
-                }, context);
-                break;
+                {
+                  var rg = ui.val('rg');
+                  colorMap.val('xy', {
+                    x: rg && rg.r || 0,
+                    y: 255 - (rg && rg.g || 0)
+                  }, context);
+                  break;
+                }
             }
           }
 
@@ -25918,14 +26660,18 @@
                 break;
 
               case 's':
-                var s = ui.val('s');
-                colorBar.val('y', 100 - (s != null ? s : 100), context);
-                break;
+                {
+                  var s = ui.val('s');
+                  colorBar.val('y', 100 - (!isNullish$1(s) ? s : 100), context);
+                  break;
+                }
 
               case 'v':
-                var v = ui.val('v');
-                colorBar.val('y', 100 - (v != null ? v : 100), context);
-                break;
+                {
+                  var v = ui.val('v');
+                  colorBar.val('y', 100 - (!isNullish$1(v) ? v : 100), context);
+                  break;
+                }
 
               case 'r':
                 colorBar.val('y', 255 - (ui.val('r') || 0), context);
@@ -25940,12 +26686,19 @@
                 break;
 
               case 'a':
-                var a = ui.val('a');
-                colorBar.val('y', 255 - (a != null ? a : 255), context);
-                break;
+                {
+                  var a = ui.val('a');
+                  colorBar.val('y', 255 - (!isNullish$1(a) ? a : 255), context);
+                  break;
+                }
             }
           }
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updatePreview(ui) {
           try {
@@ -25953,14 +26706,19 @@
             activePreview.css({
               backgroundColor: all && '#' + all.hex || 'transparent'
             });
-            setAlpha.call($this, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
+            setAlpha.call(that, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
           } catch (e) {}
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updateMapVisuals(ui) {
           switch (settings.color.mode) {
             case 'h':
-              setBG.call($this, colorMapDiv, new Color({
+              setBG.call(that, colorMapDiv, new Color({
                 h: ui.val('h') || 0,
                 s: 100,
                 v: 100
@@ -25969,104 +26727,133 @@
 
             case 's':
             case 'a':
-              var s = ui.val('s');
-              setAlpha.call($this, colorMapL2, 100 - (s != null ? s : 100));
-              break;
+              {
+                var s = ui.val('s');
+                setAlpha.call(that, colorMapL2, 100 - (!isNullish$1(s) ? s : 100));
+                break;
+              }
 
             case 'v':
-              var v = ui.val('v');
-              setAlpha.call($this, colorMapL1, v != null ? v : 100);
-              break;
+              {
+                var v = ui.val('v');
+                setAlpha.call(that, colorMapL1, !isNullish$1(v) ? v : 100);
+                break;
+              }
 
             case 'r':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
               break;
 
             case 'g':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
               break;
 
             case 'b':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
               break;
           }
 
           var a = ui.val('a');
-          setAlpha.call($this, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+          setAlpha.call(that, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updateBarVisuals(ui) {
           switch (settings.color.mode) {
             case 'h':
-              var a = ui.val('a');
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var a = ui.val('a');
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 's':
-              var hva = ui.val('hva'),
-                  saturatedColor = new Color({
-                h: hva && hva.h || 0,
-                s: 100,
-                v: hva != null ? hva.v : 100
-              });
-              setBG.call($this, colorBarDiv, saturatedColor.val('hex'));
-              setAlpha.call($this, colorBarL2, 100 - (hva != null ? hva.v : 100));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var hva = ui.val('hva'),
+                    saturatedColor = new Color({
+                  h: hva && hva.h || 0,
+                  s: 100,
+                  v: !isNullish$1(hva) ? hva.v : 100
+                });
+                setBG.call(that, colorBarDiv, saturatedColor.val('hex'));
+                setAlpha.call(that, colorBarL2, 100 - (!isNullish$1(hva) ? hva.v : 100));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 'v':
-              var hsa = ui.val('hsa'),
-                  valueColor = new Color({
-                h: hsa && hsa.h || 0,
-                s: hsa != null ? hsa.s : 100,
-                v: 100
-              });
-              setBG.call($this, colorBarDiv, valueColor.val('hex'));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var hsa = ui.val('hsa'),
+                    valueColor = new Color({
+                  h: hsa && hsa.h || 0,
+                  s: !isNullish$1(hsa) ? hsa.s : 100,
+                  v: 100
+                });
+                setBG.call(that, colorBarDiv, valueColor.val('hex'));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 'r':
             case 'g':
             case 'b':
-              var rgba = ui.val('rgba');
-              var hValue = 0,
-                  vValue = 0;
+              {
+                var rgba = ui.val('rgba');
+                var hValue = 0,
+                    vValue = 0;
 
-              if (settings.color.mode === 'r') {
-                hValue = rgba && rgba.b || 0;
-                vValue = rgba && rgba.g || 0;
-              } else if (settings.color.mode === 'g') {
-                hValue = rgba && rgba.b || 0;
-                vValue = rgba && rgba.r || 0;
-              } else if (settings.color.mode === 'b') {
-                hValue = rgba && rgba.r || 0;
-                vValue = rgba && rgba.g || 0;
+                if (settings.color.mode === 'r') {
+                  hValue = rgba && rgba.b || 0;
+                  vValue = rgba && rgba.g || 0;
+                } else if (settings.color.mode === 'g') {
+                  hValue = rgba && rgba.b || 0;
+                  vValue = rgba && rgba.r || 0;
+                } else if (settings.color.mode === 'b') {
+                  hValue = rgba && rgba.r || 0;
+                  vValue = rgba && rgba.g || 0;
+                }
+
+                var middle = vValue > hValue ? hValue : vValue;
+                setAlpha.call(that, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
+                setAlpha.call(that, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
+                setAlpha.call(that, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
+                break;
               }
 
-              var middle = vValue > hValue ? hValue : vValue;
-              setAlpha.call($this, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
-              setAlpha.call($this, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
-              setAlpha.call($this, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
-              break;
-
             case 'a':
               {
                 var _a = ui.val('a');
 
-                setBG.call($this, colorBarDiv, ui.val('hex') || '000000');
-                setAlpha.call($this, colorBarL5, _a != null ? 0 : 100);
-                setAlpha.call($this, colorBarL6, _a != null ? 100 : 0);
+                setBG.call(that, colorBarDiv, ui.val('hex') || '000000');
+                setAlpha.call(that, colorBarL5, !isNullish$1(_a) ? 0 : 100);
+                setAlpha.call(that, colorBarL6, !isNullish$1(_a) ? 100 : 0);
                 break;
               }
           }
         }
+        /**
+        * @param {external:jQuery} el
+        * @param {string} [c="transparent"]
+        * @returns {undefined}
+        */
+
 
         function setBG(el, c) {
           el.css({
             backgroundColor: c && c.length === 6 && '#' + c || 'transparent'
           });
         }
+        /**
+        * @param {external:jQuery} img
+        * @param {string} src The image source
+        * @returns {undefined}
+        */
+
 
         function setImg(img, src) {
           if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
@@ -26079,12 +26866,24 @@
             backgroundImage: 'url(\'' + src + '\')'
           });
         }
+        /**
+        * @param {external:jQuery} img
+        * @param {Float} y
+        * @returns {undefined}
+        */
+
 
         function setImgLoc(img, y) {
           img.css({
             top: y + 'px'
           });
         }
+        /**
+        * @param {external:jQuery} obj
+        * @param {Float} alpha
+        * @returns {undefined}
+        */
+
 
         function setAlpha(obj, alpha) {
           obj.css({
@@ -26095,7 +26894,7 @@
             if (isLessThanIE7) {
               var src = obj.attr('pngSrc');
 
-              if (src != null && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
+              if (!isNullish$1(src) && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
                 obj.css({
                   filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'
                 });
@@ -26109,7 +26908,7 @@
             if (isLessThanIE7) {
               var _src = obj.attr('pngSrc');
 
-              if (_src != null && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
+              if (!isNullish$1(_src) && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
                 obj.css({
                   filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + _src + '\', sizingMethod=\'scale\')'
                 });
@@ -26120,66 +26919,114 @@
               opacity: ''
             });
           }
-        } // revert color to original color when opened
+        }
+        /**
+        * Revert color to original color when opened.
+        * @returns {undefined}
+        */
 
 
         function revertColor() {
           color.active.val('ahex', color.current.val('ahex'));
-        } // commit the color changes
+        }
+        /**
+        * Commit the color changes.
+        * @returns {undefined}
+        */
 
 
         function commitColor() {
           color.current.val('ahex', color.active.val('ahex'));
         }
+        /**
+        * @param {Event} e
+        * @returns {undefined}
+        */
+
 
         function radioClicked(e) {
           $(this).parents('tbody:first').find('input:radio[value!="' + e.target.value + '"]').removeAttr('checked');
-          setColorMode.call($this, e.target.value);
+          setColorMode.call(that, e.target.value);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function currentClicked() {
-          revertColor.call($this);
+          revertColor.call(that);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function cancelClicked() {
-          revertColor.call($this);
-          settings.window.expandable && hide.call($this);
-          typeof cancelCallback === 'function' && cancelCallback.call($this, color.active, cancelButton);
+          revertColor.call(that);
+          settings.window.expandable && hide.call(that);
+          typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function okClicked() {
-          commitColor.call($this);
-          settings.window.expandable && hide.call($this);
-          typeof commitCallback === 'function' && commitCallback.call($this, color.active, okButton);
+          commitColor.call(that);
+          settings.window.expandable && hide.call(that);
+          typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function iconImageClicked() {
-          show.call($this);
+          show.call(that);
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
 
-        function currentColorChanged(ui, context) {
+
+        function currentColorChanged(ui) {
           var hex = ui.val('hex');
           currentPreview.css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          setAlpha.call($this, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
+          setAlpha.call(that, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
 
-        function expandableColorChanged(ui, context) {
+
+        function expandableColorChanged(ui) {
           var hex = ui.val('hex');
           var va = ui.val('va');
           iconColor.css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
+          setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
 
           if (settings.window.bindToInput && settings.window.updateInputColor) {
             settings.window.input.css({
               backgroundColor: hex && '#' + hex || 'transparent',
-              color: va == null || va.v > 75 ? '#000000' : '#ffffff'
+              color: isNullish$1(va) || va.v > 75 ? '#000000' : '#ffffff'
             });
           }
         }
+        /**
+        * @param {Event} e
+        * @returns {undefined}
+        */
+
 
         function moveBarMouseDown(e) {
           // const {element} = settings.window, // local copies for YUI compressor
@@ -26192,20 +27039,34 @@
           $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);
           e.preventDefault(); // prevent attempted dragging of the column
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function documentMouseMove(e) {
           container.css({
             left: elementStartX - (pageStartX - e.pageX) + 'px',
             top: elementStartY - (pageStartY - e.pageY) + 'px'
           });
-          if (settings.window.expandable && !$.support.boxModel) container.prev().css({
-            left: container.css('left'),
-            top: container.css('top')
-          });
+
+          if (settings.window.expandable && !$.support.boxModel) {
+            container.prev().css({
+              left: container.css('left'),
+              top: container.css('top')
+            });
+          }
+
           e.stopPropagation();
           e.preventDefault();
           return false;
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function documentMouseUp(e) {
           $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);
@@ -26213,6 +27074,11 @@
           e.preventDefault();
           return false;
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function quickPickClicked(e) {
           e.preventDefault();
@@ -26220,9 +27086,18 @@
           color.active.val('ahex', $(this).attr('title') || null, e.target);
           return false;
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function show() {
           color.current.val('ahex', color.active.val('ahex'));
+          /**
+          *
+          * @returns {undefined}
+          */
 
           function attachIFrame() {
             if (!settings.window.expandable || $.support.boxModel) return;
@@ -26262,8 +27137,17 @@
               break;
           }
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function hide() {
+          /**
+          *
+          * @returns {undefined}
+          */
           function removeIFrame() {
             if (settings.window.expandable) container.css({
               zIndex: 10
@@ -26287,23 +27171,29 @@
               break;
           }
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function initialize() {
           var win = settings.window,
-              popup = win.expandable ? $($this).next().find('.Container:first') : null;
-          container = win.expandable ? $('<div/>') : $($this);
+              popup = win.expandable ? $(that).next().find('.Container:first') : null;
+          container = win.expandable ? $('<div/>') : $(that);
           container.addClass('jPicker Container');
           if (win.expandable) container.hide();
 
-          container.get(0).onselectstart = function (event) {
-            if (event.target.nodeName.toLowerCase() !== 'input') return false;
+          container.get(0).onselectstart = function (e) {
+            if (e.target.nodeName.toLowerCase() !== 'input') return false;
+            return true;
           }; // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and
           // this control really is tabular data, so I believe it is the right move
 
 
           var all = color.active.val('all');
           if (win.alphaPrecision < 0) win.alphaPrecision = 0;else if (win.alphaPrecision > 2) win.alphaPrecision = 2;
-          var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(all != null ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(all != null ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(all != null ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
+          var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(!isNullish$1(all) ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(!isNullish$1(all) ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
 
           if (win.expandable) {
             container.html(controlHtml);
@@ -26329,7 +27219,7 @@
               top: win.position.y === 'top' ? popup.offset().top - 312 + 'px' : win.position.y === 'center' ? popup.offset().top - 156 + 'px' : win.position.y === 'bottom' ? popup.offset().top + 25 + 'px' : popup.offset().top + parseInt(win.position.y) + 'px'
             });
           } else {
-            container = $($this);
+            container = $(that);
             container.html(controlHtml);
           } // initialize the objects to the source code just injected
 
@@ -26374,7 +27264,7 @@
           });
           colorBar.bind(colorBarValueChanged);
           colorPicker = new ColorValuePicker(tbody, color.active, win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision);
-          var hex = all != null ? all.hex : null,
+          var hex = !isNullish$1(all) ? all.hex : null,
               preview = tbody.find('.Preview'),
               button = tbody.find('.Button');
           activePreview = preview.find('.Active:first').css({
@@ -26383,21 +27273,21 @@
           currentPreview = preview.find('.Current:first').css({
             backgroundColor: hex && '#' + hex || 'transparent'
           }).bind('click', currentClicked);
-          setAlpha.call($this, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
+          setAlpha.call(that, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
           okButton = button.find('.Ok:first').bind('click', okClicked);
           cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);
           grid = button.find('.Grid:first');
           setTimeout(function () {
-            setImg.call($this, colorMapL1, images.clientPath + 'Maps.png');
-            setImg.call($this, colorMapL2, images.clientPath + 'Maps.png');
-            setImg.call($this, colorMapL3, images.clientPath + 'map-opacity.png');
-            setImg.call($this, colorBarL1, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL2, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL3, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL4, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL5, images.clientPath + 'bar-opacity.png');
-            setImg.call($this, colorBarL6, images.clientPath + 'AlphaBar.png');
-            setImg.call($this, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
+            setImg.call(that, colorMapL1, images.clientPath + 'Maps.png');
+            setImg.call(that, colorMapL2, images.clientPath + 'Maps.png');
+            setImg.call(that, colorMapL3, images.clientPath + 'map-opacity.png');
+            setImg.call(that, colorBarL1, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL2, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL3, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL4, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL5, images.clientPath + 'bar-opacity.png');
+            setImg.call(that, colorBarL6, images.clientPath + 'AlphaBar.png');
+            setImg.call(that, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
           }, 0);
           tbody.find('td.Radio input').bind('click', radioClicked); // initialize quick list
 
@@ -26409,47 +27299,55 @@
               if (_typeof(color.quickList[i]).toString().toLowerCase() === 'string') color.quickList[i] = new Color({
                 hex: color.quickList[i]
               });
-              var alpha = color.quickList[i].val('a');
-              var ahex = color.quickList[i].val('ahex');
-              if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';
+
+              var _alpha = color.quickList[i].val('a');
+
+              var _ahex = color.quickList[i].val('ahex');
+
+              if (!win.alphaSupport && _ahex) _ahex = _ahex.substring(0, 6) + 'ff';
               var quickHex = color.quickList[i].val('hex');
-              if (!ahex) ahex = '00000000';
-              html += '<span class="QuickColor"' + (' title="#' + ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
+              if (!_ahex) _ahex = '00000000';
+              html += '<span class="QuickColor"' + (' title="#' + _ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && _alpha && _alpha < 255 ? ';opacity:' + toFixedNumeric(_alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(_alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
             }
 
-            setImg.call($this, grid, images.clientPath + 'bar-opacity.png');
+            setImg.call(that, grid, images.clientPath + 'bar-opacity.png');
             grid.html(html);
             grid.find('.QuickColor').click(quickPickClicked);
           }
 
-          setColorMode.call($this, settings.color.mode);
+          setColorMode.call(that, settings.color.mode);
           color.active.bind(activeColorChanged);
           typeof liveCallback === 'function' && color.active.bind(liveCallback);
           color.current.bind(currentColorChanged); // bind to input
 
           if (win.expandable) {
-            $this.icon = popup.parents('.Icon:first');
-            iconColor = $this.icon.find('.Color:first').css({
+            that.icon = popup.parents('.Icon:first');
+            iconColor = that.icon.find('.Color:first').css({
               backgroundColor: hex && '#' + hex || 'transparent'
             });
-            iconAlpha = $this.icon.find('.Alpha:first');
-            setImg.call($this, iconAlpha, images.clientPath + 'bar-opacity.png');
-            setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (all != null ? all.a : 0)) * 100 / 255, 4));
-            iconImage = $this.icon.find('.Image:first').css({
+            iconAlpha = that.icon.find('.Alpha:first');
+            setImg.call(that, iconAlpha, images.clientPath + 'bar-opacity.png');
+            setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (!isNullish$1(all) ? all.a : 0)) * 100 / 255, 4));
+            iconImage = that.icon.find('.Image:first').css({
               backgroundImage: 'url(\'' + images.clientPath + images.picker.file + '\')'
             }).bind('click', iconImageClicked);
 
             if (win.bindToInput && win.updateInputColor) {
               win.input.css({
                 backgroundColor: hex && '#' + hex || 'transparent',
-                color: all == null || all.v > 75 ? '#000000' : '#ffffff'
+                color: isNullish$1(all) || all.v > 75 ? '#000000' : '#ffffff'
               });
             }
 
             moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);
             color.active.bind(expandableColorChanged);
-          } else show.call($this);
+          } else show.call(that);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function destroy() {
           container.find('td.Radio input').unbind('click', radioClicked);
@@ -26460,7 +27358,7 @@
           if (settings.window.expandable) {
             iconImage.unbind('click', iconImageClicked);
             moveBar.unbind('mousedown', moveBarMouseDown);
-            $this.icon = null;
+            that.icon = null;
           }
 
           container.find('.QuickColor').unbind('click', quickPickClicked);
@@ -26492,7 +27390,7 @@
           container.html('');
 
           for (var i = 0; i < List.length; i++) {
-            if (List[i] === $this) {
+            if (List[i] === that) {
               List.splice(i, 1);
             }
           }
@@ -26514,6 +27412,19 @@
           }),
           quickList: settings.color.quickList
         };
+
+        if (typeof commitCallback !== 'function') {
+          commitCallback = null;
+        }
+
+        if (typeof liveCallback !== 'function') {
+          liveCallback = null;
+        }
+
+        if (typeof cancelCallback !== 'function') {
+          cancelCallback = null;
+        }
+
         var elementStartX = null,
             // Used to record the starting css positions for dragging the control
         elementStartY = null,
@@ -26550,12 +27461,9 @@
             // iconAlpha for popup icon
         iconImage = null,
             // iconImage popup icon
-        moveBar = null,
-            // drag bar
-        commitCallback = typeof $arguments[1] === 'function' ? $arguments[1] : null,
-            liveCallback = typeof $arguments[2] === 'function' ? $arguments[2] : null,
-            cancelCallback = typeof $arguments[3] === 'function' ? $arguments[3] : null;
-        $.extend(true, $this, {
+        moveBar = null; // drag bar
+
+        $.extend(true, that, {
           // public properties, methods, and callbacks
           commitCallback: commitCallback,
           // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks "OK"
@@ -26569,9 +27477,9 @@
           destroy: destroy // destroys this control entirely, removing all events and objects, and removing itself from the List
 
         });
-        List.push($this);
+        List.push(that);
         setTimeout(function () {
-          initialize.call($this);
+          initialize.call(that);
         }, 0);
       });
     };
@@ -26616,6 +27524,9 @@
     * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do
     * not map directly to percentage integers - range 0-2
     * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing
+    * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`
+    * @property {boolean} [window.expandable] Added by `$.fn.jPicker`
+    * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`
     * @property {PlainObject} color
     * @property {"h"|"s"|"v"|"r"|"g"|"b"|"a"} color.mode Symbols stand for "h" (hue), "s" (saturation), "v" (value), "r" (red), "g" (green), "b" (blue), "a" (alpha)
     * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the "#" prefix
@@ -27072,7 +27983,7 @@
           val = _ref2[1];
 
       if (!val) {
-        console.log(sel);
+        console.log(sel); // eslint-disable-line no-console
       }
 
       if (ids) {
@@ -27091,6 +28002,8 @@
                 node.textContent = val;
                 return true;
               }
+
+              return false;
             });
 
             break;
@@ -27100,7 +28013,7 @@
             break;
         }
       } else {
-        console.log('Missing: ' + sel);
+        console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console
       }
     });
   };
@@ -27173,7 +28086,7 @@
                 break;
               }
 
-              return _context.abrupt("return");
+              return _context.abrupt("return", undefined);
 
             case 6:
               _langData = langData, tools = _langData.tools, properties = _langData.properties, config = _langData.config, layers = _langData.layers, common = _langData.common, ui = _langData.ui;
@@ -27261,7 +28174,7 @@
                 image_width: properties.image_width,
                 layer_delete: layers.del,
                 layer_down: layers.move_down,
-                layer_new: layers['new'],
+                layer_new: layers.new,
                 layer_rename: layers.rename,
                 layer_moreopts: common.more_opts,
                 layer_up: layers.move_up,
@@ -27395,7 +28308,8 @@
                   }
                 }
 
-                console.log('Lang: ' + langParam); // Set to English if language is not in list of good langs
+                console.log('Lang: ' + langParam); // eslint-disable-line no-console
+                // Set to English if language is not in list of good langs
 
                 if (!goodLangs.includes(langParam) && langParam !== 'test') {
                   langParam = 'en';
@@ -27563,8 +28477,8 @@
   */
 
   var editor = {};
-  var $$b = [jqPluginJSHotkeys, jqPluginBBQ, jqPluginSVGIcons, jqPluginJGraduate, jqPluginSpinBtn, jqPluginSVG, jQueryContextMenu, jPicker].reduce(function ($, cb) {
-    return cb($);
+  var $$b = [jQueryPluginJSHotkeys, jQueryPluginBBQ, jQueryPluginSVGIcons, jQueryPluginJGraduate, jQueryPluginSpinButton, jQueryPluginSVG, jQueryContextMenu, jPicker].reduce(function (jq, func) {
+    return func(jq);
   }, jQuery);
   /*
   if (!$.loadingStylesheets) {
@@ -27852,107 +28766,136 @@
     */
     allowedOrigins: []
   };
+  /**
+   *
+   * @param {string} str SVG string
+   * @param {PlainObject} [opts={}]
+   * @param {boolean} [opts.noAlert]
+   * @throws {Error} Upon failure to load SVG
+   * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is
+   *   falsey, though only until after the `alert` is closed); rejects if SVG
+   *   loading fails and `noAlert` is truthy.
+   */
 
-  function loadSvgString(str, callback) {
-    var success = svgCanvas.setSvgString(str) !== false;
-    callback = callback || $$b.noop;
-
-    if (success) {
-      callback(true); // eslint-disable-line standard/no-callback-literal
-    } else {
-      $$b.alert(uiStrings$1.notification.errorLoadingSVG, function () {
-        callback(false); // eslint-disable-line standard/no-callback-literal
-      });
-    }
+  function loadSvgString(_x) {
+    return _loadSvgString.apply(this, arguments);
   }
   /**
    * @function module:SVGEditor~getImportLocale
-   * @param {string} defaultLang
-   * @param {string} defaultName
+   * @param {PlainObject} defaults
+   * @param {string} defaults.defaultLang
+   * @param {string} defaults.defaultName
    * @returns {module:SVGEditor~ImportLocale}
    */
 
 
+  function _loadSvgString() {
+    _loadSvgString = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee23(str) {
+      var _ref45,
+          noAlert,
+          success,
+          _args23 = arguments;
+
+      return regeneratorRuntime.wrap(function _callee23$(_context23) {
+        while (1) {
+          switch (_context23.prev = _context23.next) {
+            case 0:
+              _ref45 = _args23.length > 1 && _args23[1] !== undefined ? _args23[1] : {}, noAlert = _ref45.noAlert;
+              success = svgCanvas.setSvgString(str) !== false;
+
+              if (!success) {
+                _context23.next = 4;
+                break;
+              }
+
+              return _context23.abrupt("return");
+
+            case 4:
+              if (noAlert) {
+                _context23.next = 8;
+                break;
+              }
+
+              _context23.next = 7;
+              return $$b.alert(uiStrings$1.notification.errorLoadingSVG);
+
+            case 7:
+              return _context23.abrupt("return");
+
+            case 8:
+              throw new Error('Error loading SVG');
+
+            case 9:
+            case "end":
+              return _context23.stop();
+          }
+        }
+      }, _callee23, this);
+    }));
+    return _loadSvgString.apply(this, arguments);
+  }
+
   function getImportLocale(_ref) {
     var defaultLang = _ref.defaultLang,
         defaultName = _ref.defaultName;
 
     /**
      * @function module:SVGEditor~ImportLocale
-     * @param {string} [name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
-     * @param {string} [lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
+     * @param {PlainObject} localeInfo
+     * @param {string} [localeInfo.name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
+     * @param {string} [localeInfo.lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
      * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}
      */
     return (
       /*#__PURE__*/
       function () {
-        var _importLocale = _asyncToGenerator(
+        var _importLocaleDefaulting = _asyncToGenerator(
         /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee2() {
+        regeneratorRuntime.mark(function _callee() {
           var _ref2,
               _ref2$name,
               name,
               _ref2$lang,
               lang,
               importLocale,
-              _importLocale2,
-              _args2 = arguments;
+              _args = arguments;
 
-          return regeneratorRuntime.wrap(function _callee2$(_context2) {
+          return regeneratorRuntime.wrap(function _callee$(_context) {
             while (1) {
-              switch (_context2.prev = _context2.next) {
+              switch (_context.prev = _context.next) {
                 case 0:
-                  _importLocale2 = function _ref4() {
-                    _importLocale2 = _asyncToGenerator(
-                    /*#__PURE__*/
-                    regeneratorRuntime.mark(function _callee(lang) {
-                      var url;
-                      return regeneratorRuntime.wrap(function _callee$(_context) {
-                        while (1) {
-                          switch (_context.prev = _context.next) {
-                            case 0:
-                              url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(lang, ".js");
-                              return _context.abrupt("return", importSetGlobalDefault(url, {
-                                global: "svgEditorExtensionLocale_".concat(name, "_").concat(lang)
-                              }));
-
-                            case 2:
-                            case "end":
-                              return _context.stop();
-                          }
-                        }
-                      }, _callee, this);
-                    }));
-                    return _importLocale2.apply(this, arguments);
+                  importLocale = function _ref3(language) {
+                    var url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(language, ".js");
+                    return importSetGlobalDefault(url, {
+                      global: "svgEditorExtensionLocale_".concat(name, "_").concat(language)
+                    });
                   };
 
-                  importLocale = function _ref3(_x) {
-                    return _importLocale2.apply(this, arguments);
-                  };
-
-                  _ref2 = _args2.length > 0 && _args2[0] !== undefined ? _args2[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
-                  _context2.prev = 3;
-                  _context2.next = 6;
+                  _ref2 = _args.length > 0 && _args[0] !== undefined ? _args[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
+                  _context.prev = 2;
+                  _context.next = 5;
                   return importLocale(lang);
 
-                case 6:
-                  return _context2.abrupt("return", _context2.sent);
+                case 5:
+                  return _context.abrupt("return", _context.sent);
 
-                case 9:
-                  _context2.prev = 9;
-                  _context2.t0 = _context2["catch"](3);
-                  return _context2.abrupt("return", importLocale('en'));
+                case 8:
+                  _context.prev = 8;
+                  _context.t0 = _context["catch"](2);
+                  return _context.abrupt("return", importLocale('en'));
 
-                case 12:
+                case 11:
                 case "end":
-                  return _context2.stop();
+                  return _context.stop();
               }
             }
-          }, _callee2, this, [[3, 9]]);
+          }, _callee, this, [[2, 8]]);
         }));
 
-        return function importLocale() {
-          return _importLocale.apply(this, arguments);
+        return function importLocaleDefaulting() {
+          return _importLocaleDefaulting.apply(this, arguments);
         };
       }()
     );
@@ -27965,7 +28908,7 @@
   * Store and retrieve preferences.
   * @param {string} key The preference name to be retrieved or set
   * @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.
-  * @returns {string} If val is missing or falsey, the value of the previously stored preference will be returned.
+  * @returns {string|undefined} If val is missing or falsey, the value of the previously stored preference will be returned.
   * @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?
   * @todo Review whether any remaining existing direct references to
   *  getting `curPrefs` can be changed to use `$.pref()` getting to ensure
@@ -27986,7 +28929,7 @@
 
       editor.curPrefs = curPrefs; // Update exported value
 
-      return;
+      return undefined;
     }
 
     return key in curPrefs ? curPrefs[key] : defaultPrefs[key];
@@ -28016,13 +28959,13 @@
   */
 
   editor.loadContentAndPrefs = function () {
-    if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/))) {
+    if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/))) {
       return;
     } // LOAD CONTENT
 
 
     if (editor.storage && ( // Cookies do not have enough available memory to hold large documents
-    curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)store=prefsAndContent/))) {
+    curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)svgeditstorestore=prefsAndContent/))) {
       var name = 'svgedit-' + curConfig.canvasName;
       var cached = editor.storage.getItem(name);
 
@@ -28032,25 +28975,22 @@
     } // LOAD PREFS
 
 
-    for (var key in defaultPrefs) {
-      if (defaultPrefs.hasOwnProperty(key)) {
-        // It's our own config, so we don't need to iterate up the prototype chain
-        var storeKey = 'svg-edit-' + key;
+    Object.keys(defaultPrefs).forEach(function (key) {
+      var storeKey = 'svg-edit-' + key;
 
-        if (editor.storage) {
-          var val = editor.storage.getItem(storeKey);
+      if (editor.storage) {
+        var val = editor.storage.getItem(storeKey);
 
-          if (val) {
-            defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
-          }
-        } else if (window.widget) {
-          defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
-        } else {
-          var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
-          defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
+        if (val) {
+          defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
         }
+      } else if (window.widget) {
+        defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
+      } else {
+        var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
+        defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
       }
-    }
+    });
   };
   /**
   * Allows setting of preferences or configuration (including extensions).
@@ -28076,6 +29016,13 @@
 
   editor.setConfig = function (opts, cfgCfg) {
     cfgCfg = cfgCfg || {};
+    /**
+     *
+     * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj
+     * @param {string} key
+     * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}
+     * @returns {undefined}
+     */
 
     function extendOrAdd(cfgObj, key, val) {
       if (cfgObj[key] && _typeof(cfgObj[key]) === 'object') {
@@ -28086,10 +29033,10 @@
     }
 
     $$b.each(opts, function (key, val) {
-      if (opts.hasOwnProperty(key)) {
+      if ({}.hasOwnProperty.call(opts, key)) {
         // Only allow prefs defined in defaultPrefs
-        if (defaultPrefs.hasOwnProperty(key)) {
-          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curPrefs.hasOwnProperty(key))) {
+        if ({}.hasOwnProperty.call(defaultPrefs, key)) {
+          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curPrefs, key))) {
             return;
           }
 
@@ -28105,29 +29052,25 @@
 
           curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later
           // Only allow other curConfig if defined in defaultConfig
-        } else if (defaultConfig.hasOwnProperty(key)) {
-          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curConfig.hasOwnProperty(key))) {
+        } else if ({}.hasOwnProperty.call(defaultConfig, key)) {
+          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curConfig, key))) {
             return;
           } // Potentially overwriting of previously set config
 
 
-          if (curConfig.hasOwnProperty(key)) {
+          if ({}.hasOwnProperty.call(curConfig, key)) {
             if (cfgCfg.overwrite === false) {
               return;
             }
 
             extendOrAdd(curConfig, key, val);
+          } else if (cfgCfg.allowInitialUserOverride === true) {
+            extendOrAdd(defaultConfig, key, val);
+          } else if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
+            curConfig[key] = {};
+            $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
           } else {
-            if (cfgCfg.allowInitialUserOverride === true) {
-              extendOrAdd(defaultConfig, key, val);
-            } else {
-              if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
-                curConfig[key] = {};
-                $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
-              } else {
-                curConfig[key] = val;
-              }
-            }
+            curConfig[key] = val;
           }
         }
       }
@@ -28275,6 +29218,10 @@
     $$b('#lang_select option').each(function () {
       goodLangs.push(this.value);
     });
+    /**
+     * Sets up current preferences based on defaults.
+     * @returns {undefined}
+     */
 
     function setupCurPrefs() {
       curPrefs = $$b.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set
@@ -28282,6 +29229,11 @@
 
       editor.curPrefs = curPrefs;
     }
+    /**
+     * Sets up current config based on defaults.
+     * @returns {undefined}
+     */
+
 
     function setupCurConfig() {
       curConfig = $$b.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set
@@ -28386,7 +29338,9 @@
       var icon = typeof iconId === 'string' ? $$b.getSvgIcon(iconId, true) : iconId.clone();
 
       if (!icon) {
-        console.log('NOTE: Icon image missing: ' + iconId);
+        // Todo: Investigate why this still occurs in some cases
+        console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console
+
         return;
       }
 
@@ -28404,48 +29358,53 @@
     var extAndLocaleFunc =
     /*#__PURE__*/
     function () {
-      var _ref5 = _asyncToGenerator(
+      var _ref4 = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee4() {
-        var _ref6, langParam, langData;
+      regeneratorRuntime.mark(function _callee3() {
+        var _ref5, langParam, langData, _uiStrings$common, ok, cancel;
 
-        return regeneratorRuntime.wrap(function _callee4$(_context4) {
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
           while (1) {
-            switch (_context4.prev = _context4.next) {
+            switch (_context3.prev = _context3.next) {
               case 0:
-                _context4.next = 2;
+                _context3.next = 2;
                 return editor.putLocale(null, goodLangs, curConfig);
 
               case 2:
-                _ref6 = _context4.sent;
-                langParam = _ref6.langParam;
-                langData = _ref6.langData;
-                _context4.next = 7;
+                _ref5 = _context3.sent;
+                langParam = _ref5.langParam;
+                langData = _ref5.langData;
+                _context3.next = 7;
                 return setLang(langParam, langData);
 
               case 7:
-                _context4.prev = 7;
-                _context4.next = 10;
+                _uiStrings$common = uiStrings$1.common, ok = _uiStrings$common.ok, cancel = _uiStrings$common.cancel;
+                jQueryPluginDBox($$b, {
+                  ok: ok,
+                  cancel: cancel
+                });
+                _context3.prev = 9;
+                _context3.next = 12;
                 return Promise.all(curConfig.extensions.map(
                 /*#__PURE__*/
                 function () {
-                  var _ref7 = _asyncToGenerator(
+                  var _ref6 = _asyncToGenerator(
                   /*#__PURE__*/
-                  regeneratorRuntime.mark(function _callee3(extname) {
+                  regeneratorRuntime.mark(function _callee2(extname) {
                     var extName, url, imported, _imported$name, name, init$$1, importLocale;
 
-                    return regeneratorRuntime.wrap(function _callee3$(_context3) {
+                    return regeneratorRuntime.wrap(function _callee2$(_context2) {
                       while (1) {
-                        switch (_context3.prev = _context3.next) {
+                        switch (_context2.prev = _context2.next) {
                           case 0:
                             extName = extname.match(/^ext-(.+)\.js/);
 
                             if (extName) {
-                              _context3.next = 3;
+                              _context2.next = 3;
                               break;
                             }
 
-                            return _context3.abrupt("return");
+                            return _context2.abrupt("return", undefined);
 
                           case 3:
                             url = curConfig.extPath + extname; // Todo: Replace this with `return import(url);` when
@@ -28458,41 +29417,48 @@
                              * @property {module:svgcanvas.ExtensionInitCallback} [init]
                              */
 
-                            _context3.prev = 4;
-                            _context3.next = 7;
+                            _context2.prev = 4;
+                            _context2.next = 7;
                             return importSetGlobalDefault(url, {
                               global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')
                             });
 
                           case 7:
-                            imported = _context3.sent;
+                            imported = _context2.sent;
                             _imported$name = imported.name, name = _imported$name === void 0 ? extName[1] : _imported$name, init$$1 = imported.init;
                             importLocale = getImportLocale({
                               defaultLang: langParam,
                               defaultName: name
                             });
-                            return _context3.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), importLocale));
+                            return _context2.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), {
+                              $: $$b,
+                              importLocale: importLocale
+                            }));
 
                           case 13:
-                            _context3.prev = 13;
-                            _context3.t0 = _context3["catch"](4);
-                            console.log(_context3.t0);
-                            console.error('Extension failed to load: ' + extname + '; ' + _context3.t0);
+                            _context2.prev = 13;
+                            _context2.t0 = _context2["catch"](4);
+                            // Todo: Add config to alert any errors
+                            console.log(_context2.t0); // eslint-disable-line no-console
 
-                          case 17:
+                            console.error('Extension failed to load: ' + extname + '; ' + _context2.t0); // eslint-disable-line no-console
+
+                            return _context2.abrupt("return", undefined);
+
+                          case 18:
                           case "end":
-                            return _context3.stop();
+                            return _context2.stop();
                         }
                       }
-                    }, _callee3, this, [[4, 13]]);
+                    }, _callee2, this, [[4, 13]]);
                   }));
 
                   return function (_x2) {
-                    return _ref7.apply(this, arguments);
+                    return _ref6.apply(this, arguments);
                   };
                 }()));
 
-              case 10:
+              case 12:
                 svgCanvas.bind('extensions_added',
                 /**
                 * @param {external:Window} win
@@ -28522,30 +29488,35 @@
                   });
                 });
                 svgCanvas.call('extensions_added');
-                _context4.next = 17;
+                _context3.next = 19;
                 break;
 
-              case 14:
-                _context4.prev = 14;
-                _context4.t0 = _context4["catch"](7);
-                console.log(_context4.t0);
+              case 16:
+                _context3.prev = 16;
+                _context3.t0 = _context3["catch"](9);
+                // Todo: Report errors through the UI
+                console.log(_context3.t0); // eslint-disable-line no-console
 
-              case 17:
+              case 19:
               case "end":
-                return _context4.stop();
+                return _context3.stop();
             }
           }
-        }, _callee4, this, [[7, 14]]);
+        }, _callee3, this, [[9, 16]]);
       }));
 
       return function extAndLocaleFunc() {
-        return _ref5.apply(this, arguments);
+        return _ref4.apply(this, arguments);
       };
     }();
 
     var stateObj = {
       tool_scale: editor.tool_scale
     };
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var setFlyoutPositions = function setFlyoutPositions() {
       $$b('.tools_flyout').each(function () {
@@ -28562,6 +29533,10 @@
         });
       });
     };
+    /**
+    * @type {string}
+    */
+
 
     var uaPrefix = function () {
       var regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
@@ -28586,6 +29561,12 @@
 
       return '';
     }();
+    /**
+    * @param {external:jQuery} elems
+    * @param {Float} scale
+    * @returns {undefined}
+    */
+
 
     var scaleElements = function scaleElements(elems, scale) {
       // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused
@@ -28601,8 +29582,8 @@
           var s = sides[i];
           var cur = el.data('orig_margin-' + s);
 
-          if (cur == null) {
-            cur = parseInt(el.css('margin-' + s), 10); // Cache the original margin
+          if (isNullish(cur)) {
+            cur = parseInt(el.css('margin-' + s)); // Cache the original margin
 
             el.data('orig_margin-' + s, cur);
           }
@@ -28998,95 +29979,122 @@
         '.stroke_tool div div .svg_icon': 20,
         '#tools_bottom label .svg_icon': 18
       },
-      callback: function callback(icons) {
-        $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
-          $$b(this).parent().prepend(this);
-        });
-        var tleft = $$b('#tools_left');
-        var minHeight;
+      callback: function () {
+        var _callback = _asyncToGenerator(
+        /*#__PURE__*/
+        regeneratorRuntime.mark(function _callee4(icons) {
+          var tleft, minHeight, size, getStylesheetPriority, stylesheets, idx, _stylesheets;
 
-        if (tleft.length) {
-          minHeight = tleft.offset().top + tleft.outerHeight();
-        }
+          return regeneratorRuntime.wrap(function _callee4$(_context4) {
+            while (1) {
+              switch (_context4.prev = _context4.next) {
+                case 0:
+                  getStylesheetPriority = function _ref8(stylesheetFile) {
+                    switch (stylesheetFile) {
+                      case 'jgraduate/css/jPicker.css':
+                        return 1;
 
-        var size = $$b.pref('iconsize');
-        editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+                      case 'jgraduate/css/jGraduate.css':
+                        return 2;
 
-        $$b('.tools_flyout').each(function () {
-          var shower = $$b('#' + this.id + '_show');
-          var sel = shower.attr('data-curopt'); // Check if there's an icon here
+                      case 'svg-editor.css':
+                        return 3;
 
-          if (!shower.children('svg, img').length) {
-            var clone = $$b(sel).children().clone();
+                      case 'spinbtn/jQuery.SpinButton.css':
+                        return 4;
 
-            if (clone.length) {
-              clone[0].removeAttribute('style'); // Needed for Opera
+                      default:
+                        return Infinity;
+                    }
+                  };
 
-              shower.append(clone);
+                  $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
+                    $$b(this).parent().prepend(this);
+                  });
+                  tleft = $$b('#tools_left');
+
+                  if (tleft.length) {
+                    minHeight = tleft.offset().top + tleft.outerHeight();
+                  }
+
+                  size = $$b.pref('iconsize');
+                  editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+
+                  $$b('.tools_flyout').each(function () {
+                    var shower = $$b('#' + this.id + '_show');
+                    var sel = shower.attr('data-curopt'); // Check if there's an icon here
+
+                    if (!shower.children('svg, img').length) {
+                      var clone = $$b(sel).children().clone();
+
+                      if (clone.length) {
+                        clone[0].removeAttribute('style'); // Needed for Opera
+
+                        shower.append(clone);
+                      }
+                    }
+                  });
+                  /**
+                   * Since stylesheets may be added out of order, we indicate the desired order
+                   *   for defaults and others after them (in an indeterminate order).
+                   * @param {string} stylesheetFile
+                   * @returns {Integer|PositiveInfinity}
+                   */
+
+                  stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
+                    var priorityA = getStylesheetPriority(a);
+                    var priorityB = getStylesheetPriority(b);
+
+                    if (priorityA === priorityB) {
+                      return 0;
+                    }
+
+                    return priorityA > priorityB;
+                  });
+
+                  if (curConfig.stylesheets.length) {
+                    // Ensure a copy with unique items
+                    stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
+                    idx = stylesheets.indexOf('@default');
+
+                    if (idx > -1) {
+                      (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
+                    }
+                  }
+
+                  _context4.next = 11;
+                  return loadStylesheets(stylesheets, {
+                    acceptErrors: function acceptErrors(_ref7) {
+                      var stylesheetURL = _ref7.stylesheetURL,
+                          reject = _ref7.reject,
+                          resolve = _ref7.resolve;
+
+                      if ($$b.loadingStylesheets.includes(stylesheetURL)) {
+                        reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
+                        return;
+                      }
+
+                      resolve();
+                    }
+                  });
+
+                case 11:
+                  $$b('#svg_container')[0].style.visibility = 'visible';
+                  _context4.next = 14;
+                  return editor.runCallbacks();
+
+                case 14:
+                case "end":
+                  return _context4.stop();
+              }
             }
-          }
-        });
+          }, _callee4, this);
+        }));
 
-        function getStylesheetPriority(stylesheet) {
-          switch (stylesheet) {
-            case 'jgraduate/css/jPicker.css':
-              return 1;
-
-            case 'jgraduate/css/jGraduate.css':
-              return 2;
-
-            case 'svg-editor.css':
-              return 3;
-
-            case 'spinbtn/jQuery.SpinButton.css':
-              return 4;
-
-            default:
-              return Infinity;
-          }
-        }
-
-        var stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
-          var priorityA = getStylesheetPriority(a);
-          var priorityB = getStylesheetPriority(b);
-
-          if (priorityA === priorityB) {
-            return 0;
-          }
-
-          return priorityA > priorityB;
-        });
-
-        if (curConfig.stylesheets.length) {
-          // Ensure a copy with unique items
-          stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
-          var idx = stylesheets.indexOf('@default');
-
-          if (idx > -1) {
-            var _stylesheets;
-
-            (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
-          }
-        }
-
-        loadStylesheets(stylesheets, {
-          acceptErrors: function acceptErrors(_ref8) {
-            var stylesheetURL = _ref8.stylesheetURL,
-                reject = _ref8.reject,
-                resolve = _ref8.resolve;
-
-            if ($$b.loadingStylesheets.includes(stylesheetURL)) {
-              reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
-              return;
-            }
-
-            resolve();
-          }
-        }).then(function () {
-          $$b('#svg_container')[0].style.visibility = 'visible';
-          editor.runCallbacks();
-        });
-      }
+        return function callback(_x3) {
+          return _callback.apply(this, arguments);
+        };
+      }()
     });
     /**
     * @name module:SVGEditor.canvas
@@ -29139,125 +30147,12 @@
           w.document.documentElement.dispatchEvent(svgEditorReadyEvent);
         } catch (e) {}
       }
-    })(); // This sets up alternative dialog boxes. They mostly work the same way as
-    // their UI counterparts, expect instead of returning the result, a callback
-    // needs to be included that returns the result as its first parameter.
-    // In the future we may want to add additional types of dialog boxes, since
-    // they should be easy to handle this way.
-
-
-    (function () {
-      $$b('#dialog_container').draggable({
-        cancel: '#dialog_content, #dialog_buttons *',
-        containment: 'window'
-      }).css('position', 'absolute');
-
-      var box = $$b('#dialog_box'),
-          btnHolder = $$b('#dialog_buttons'),
-          dialogContent = $$b('#dialog_content'),
-          dbox = function dbox(type, msg, callback, defaultVal, opts, changeCb, checkbox) {
-        dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
-        btnHolder.empty();
-        var ok = $$b('<input type="button" value="' + uiStrings$1.common.ok + '">').appendTo(btnHolder);
-
-        if (type !== 'alert') {
-          $$b('<input type="button" value="' + uiStrings$1.common.cancel + '">').appendTo(btnHolder).click(function () {
-            box.hide();
-
-            if (callback) {
-              callback(false); // eslint-disable-line standard/no-callback-literal
-            }
-          });
-        }
-
-        var ctrl, chkbx;
-
-        if (type === 'prompt') {
-          ctrl = $$b('<input type="text">').prependTo(btnHolder);
-          ctrl.val(defaultVal || '');
-          ctrl.bind('keydown', 'return', function () {
-            ok.click();
-          });
-        } else if (type === 'select') {
-          var div = $$b('<div style="text-align:center;">');
-          ctrl = $$b('<select>').appendTo(div);
-
-          if (checkbox) {
-            var label = $$b('<label>').text(checkbox.label);
-            chkbx = $$b('<input type="checkbox">').appendTo(label);
-            chkbx.val(checkbox.value);
-
-            if (checkbox.tooltip) {
-              label.attr('title', checkbox.tooltip);
-            }
-
-            chkbx.prop('checked', !!checkbox.checked);
-            div.append($$b('<div>').append(label));
-          }
-
-          $$b.each(opts || [], function (opt, val) {
-            if (_typeof(val) === 'object') {
-              ctrl.append($$b('<option>').val(val.value).html(val.text));
-            } else {
-              ctrl.append($$b('<option>').html(val));
-            }
-          });
-          dialogContent.append(div);
-
-          if (defaultVal) {
-            ctrl.val(defaultVal);
-          }
-
-          if (changeCb) {
-            ctrl.bind('change', 'return', changeCb);
-          }
-
-          ctrl.bind('keydown', 'return', function () {
-            ok.click();
-          });
-        } else if (type === 'process') {
-          ok.hide();
-        }
-
-        box.show();
-        ok.click(function () {
-          box.hide();
-          var resp = type === 'prompt' || type === 'select' ? ctrl.val() : true;
-
-          if (callback) {
-            if (chkbx) {
-              callback(resp, chkbx.prop('checked'));
-            } else {
-              callback(resp);
-            }
-          }
-        }).focus();
-
-        if (type === 'prompt' || type === 'select') {
-          ctrl.focus();
-        }
-      };
-
-      $$b.alert = function (msg, cb) {
-        dbox('alert', msg, cb);
-      };
-
-      $$b.confirm = function (msg, cb) {
-        dbox('confirm', msg, cb);
-      };
-
-      $$b.process_cancel = function (msg, cb) {
-        dbox('process', msg, cb);
-      };
-
-      $$b.prompt = function (msg, txt, cb) {
-        dbox('prompt', msg, cb, txt);
-      };
-
-      $$b.select = function (msg, opts, cb, changeCb, txt, checkbox) {
-        dbox('select', msg, cb, txt, opts, changeCb, checkbox);
-      };
     })();
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var setSelectMode = function setSelectMode() {
       var curr = $$b('.tool_button_current');
@@ -29283,8 +30178,13 @@
       rIntervals.push(i);
       rIntervals.push(2 * i);
       rIntervals.push(5 * i);
-    } // This function highlights the layer passed in (by fading out the other layers)
-    // if no layer is passed in, this function restores the other layers
+    }
+    /**
+     * This function highlights the layer passed in (by fading out the other layers).
+     * If no layer is passed in, this function restores the other layers
+     * @param {string} [layerNameToHighlight]
+     * @returns {undefined}
+    */
 
 
     var toggleHighlightLayer = function toggleHighlightLayer(layerNameToHighlight) {
@@ -29297,17 +30197,22 @@
       }
 
       if (layerNameToHighlight) {
-        for (i = 0; i < numLayers; ++i) {
-          if (curNames[i] !== layerNameToHighlight) {
-            svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);
+        curNames.forEach(function (curName) {
+          if (curName !== layerNameToHighlight) {
+            svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);
           }
-        }
+        });
       } else {
-        for (i = 0; i < numLayers; ++i) {
-          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);
-        }
+        curNames.forEach(function (curName) {
+          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);
+        });
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var populateLayers = function populateLayers() {
       svgCanvas.clearSelection();
@@ -29364,6 +30269,11 @@
 
     var editingsource = false;
     var origSource = '';
+    /**
+    * @param {Event} [e] Not used.
+    * @param {boolean} forSaving
+    * @returns {undefined}
+    */
 
     var showSourceEditor = function showSourceEditor(e, forSaving) {
       if (editingsource) {
@@ -29372,7 +30282,7 @@
 
       editingsource = true;
       origSource = svgCanvas.getSvgString();
-      $$b('#save_output_btns').toggle(!!forSaving);
+      $$b('#save_output_btns').toggle(Boolean(forSaving));
       $$b('#tool_source_back').toggle(!forSaving);
       $$b('#svg_source_textarea').val(origSource);
       $$b('#svg_source_editor').fadeIn();
@@ -29381,6 +30291,11 @@
 
     var selectedElement = null;
     var multiselected = false;
+    /**
+    * @param {boolean} editmode
+    * @param {module:svgcanvas.SvgCanvas#event:selected} elems
+    * @returns {undefined}
+    */
 
     var togglePathEditMode = function togglePathEditMode(editmode, elems) {
       $$b('#path_node_panel').toggle(editmode);
@@ -29453,7 +30368,7 @@
         }
 
         if (done !== 'part') {
-          alert(note);
+          $$b.alert(note);
         }
       }
     };
@@ -29471,6 +30386,7 @@
       exportWindow = window.open(blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one
 
       if (!exportWindow || exportWindow.closed) {
+        /* await */
         $$b.alert(uiStrings$1.notification.popupWindowBlocked);
         return;
       }
@@ -29492,6 +30408,11 @@
         exportWindow.alert(note);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var operaRepaint = function operaRepaint() {
       // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
@@ -29501,12 +30422,21 @@
 
       $$b('<p/>').hide().appendTo('body').remove();
     };
+    /**
+     *
+     * @param {Element} opt
+     * @param {boolean} changeElem
+     * @returns {undefined}
+     */
+
 
     function setStrokeOpt(opt, changeElem) {
       var id = opt.id;
       var bits = id.split('_');
-      var pre = bits[0];
-      var val = bits[1];
+
+      var _bits = _slicedToArray(bits, 2),
+          pre = _bits[0],
+          val = _bits[1];
 
       if (changeElem) {
         svgCanvas.setStrokeAttr('stroke-' + pre, val);
@@ -29595,6 +30525,13 @@
         $$b('#change_image_url').hide();
       }
     };
+    /**
+     *
+     * @param {string} color
+     * @param {string} url
+     * @returns {undefined}
+     */
+
 
     function setBackground(color, url) {
       // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }
@@ -29603,27 +30540,73 @@
 
       svgCanvas.setBackground(color, url);
     }
+    /**
+     * @param {PlainObject} [opts={}]
+     * @param {boolean} [opts.cancelDeletes=false}]
+     * @returns {Promise} Resolves to `undefined`
+     */
+
 
     function promptImgURL() {
-      var _ref9 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
-          _ref9$cancelDeletes = _ref9.cancelDeletes,
-          cancelDeletes = _ref9$cancelDeletes === void 0 ? false : _ref9$cancelDeletes;
+      return _promptImgURL.apply(this, arguments);
+    }
+    /**
+    * @param {Element} elem
+    * @returns {undefined}
+    */
 
-      var curhref = svgCanvas.getHref(selectedElement);
-      curhref = curhref.startsWith('data:') ? '' : curhref;
-      $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref, function (url) {
-        if (url) {
-          setImageURL(url);
-        } else if (cancelDeletes) {
-          svgCanvas.deleteSelectedElements();
-        }
-      });
+
+    function _promptImgURL() {
+      _promptImgURL = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee18() {
+        var _ref31,
+            _ref31$cancelDeletes,
+            cancelDeletes,
+            curhref,
+            url,
+            _args18 = arguments;
+
+        return regeneratorRuntime.wrap(function _callee18$(_context18) {
+          while (1) {
+            switch (_context18.prev = _context18.next) {
+              case 0:
+                _ref31 = _args18.length > 0 && _args18[0] !== undefined ? _args18[0] : {}, _ref31$cancelDeletes = _ref31.cancelDeletes, cancelDeletes = _ref31$cancelDeletes === void 0 ? false : _ref31$cancelDeletes;
+                curhref = svgCanvas.getHref(selectedElement);
+                curhref = curhref.startsWith('data:') ? '' : curhref;
+                _context18.next = 5;
+                return $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref);
+
+              case 5:
+                url = _context18.sent;
+
+                if (url) {
+                  setImageURL(url);
+                } else if (cancelDeletes) {
+                  svgCanvas.deleteSelectedElements();
+                }
+
+              case 7:
+              case "end":
+                return _context18.stop();
+            }
+          }
+        }, _callee18, this);
+      }));
+      return _promptImgURL.apply(this, arguments);
     }
 
     var setInputWidth = function setInputWidth(elem) {
       var w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
       $$b(elem).width(w);
     };
+    /**
+     *
+     * @param {HTMLDivElement} [scanvas]
+     * @param {Float} [zoom]
+     * @returns {undefined}
+     */
+
 
     function updateRulers(scanvas, zoom) {
       if (!zoom) {
@@ -29665,7 +30648,7 @@
         $hcanv.siblings().remove(); // Create multiple canvases when necessary (due to browser limits)
 
         if (rulerLen >= limit) {
-          ctxArrNum = parseInt(rulerLen / limit, 10) + 1;
+          ctxArrNum = parseInt(rulerLen / limit) + 1;
           ctxArr = [];
           ctxArr[0] = ctx;
           var copy = void 0;
@@ -29819,8 +30802,9 @@
       var newCanX = w / 2;
       var offset = svgCanvas.updateCanvas(w, h);
       var ratio = newCanX / oldCanX;
-      var scrollX = w / 2 - wOrig / 2;
-      var scrollY = h / 2 - hOrig / 2;
+      var scrollX = w / 2 - wOrig / 2; // eslint-disable-line no-shadow
+
+      var scrollY = h / 2 - hOrig / 2; // eslint-disable-line no-shadow
 
       if (!newCtr) {
         var oldDistX = oldCtr.x - oldCanX;
@@ -29868,44 +30852,37 @@
 
 
     var updateToolButtonState = function updateToolButtonState() {
-      var index, button;
       var bNoFill = svgCanvas.getColor('fill') === 'none';
       var bNoStroke = svgCanvas.getColor('stroke') === 'none';
       var buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];
       var buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];
 
       if (bNoStroke) {
-        for (index in buttonsNeedingStroke) {
-          button = buttonsNeedingStroke[index];
-
-          if ($$b(button).hasClass('tool_button_current')) {
+        buttonsNeedingStroke.forEach(function (btn) {
+          if ($$b(btn).hasClass('tool_button_current')) {
             clickSelect();
           }
 
-          $$b(button).addClass('disabled');
-        }
+          $$b(btn).addClass('disabled');
+        });
       } else {
-        for (index in buttonsNeedingStroke) {
-          button = buttonsNeedingStroke[index];
-          $$b(button).removeClass('disabled');
-        }
+        buttonsNeedingStroke.forEach(function (btn) {
+          $$b(btn).removeClass('disabled');
+        });
       }
 
       if (bNoStroke && bNoFill) {
-        for (index in buttonsNeedingFillAndStroke) {
-          button = buttonsNeedingFillAndStroke[index];
-
-          if ($$b(button).hasClass('tool_button_current')) {
+        buttonsNeedingFillAndStroke.forEach(function (btn) {
+          if ($$b(btn).hasClass('tool_button_current')) {
             clickSelect();
           }
 
-          $$b(button).addClass('disabled');
-        }
+          $$b(btn).addClass('disabled');
+        });
       } else {
-        for (index in buttonsNeedingFillAndStroke) {
-          button = buttonsNeedingFillAndStroke[index];
-          $$b(button).removeClass('disabled');
-        }
+        buttonsNeedingFillAndStroke.forEach(function (btn) {
+          $$b(btn).removeClass('disabled');
+        });
       }
 
       svgCanvas.runExtensions('toolButtonStateUpdate',
@@ -29926,14 +30903,19 @@
         shower.toggleClass('disabled', !hasEnabled);
       });
       operaRepaint();
-    }; // Updates the toolbar (colors, opacity, etc) based on the selected element
-    // This function also updates the opacity and id elements that are in the context panel
+    };
+    /**
+    * Updates the toolbar (colors, opacity, etc) based on the selected element.
+    * This function also updates the opacity and id elements that are in the
+    * context panel.
+    * @returns {undefined}
+    */
 
 
     var updateToolbar = function updateToolbar() {
       var i, len;
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         switch (selectedElement.tagName) {
           case 'use':
           case 'image':
@@ -29942,47 +30924,50 @@
 
           case 'g':
           case 'a':
-            // Look for common styles
-            var childs = selectedElement.getElementsByTagName('*');
-            var gWidth = null;
+            {
+              // Look for common styles
+              var childs = selectedElement.getElementsByTagName('*');
+              var gWidth = null;
 
-            for (i = 0, len = childs.length; i < len; i++) {
-              var swidth = childs[i].getAttribute('stroke-width');
+              for (i = 0, len = childs.length; i < len; i++) {
+                var swidth = childs[i].getAttribute('stroke-width');
 
-              if (i === 0) {
-                gWidth = swidth;
-              } else if (gWidth !== swidth) {
-                gWidth = null;
+                if (i === 0) {
+                  gWidth = swidth;
+                } else if (gWidth !== swidth) {
+                  gWidth = null;
+                }
               }
-            }
 
-            $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
-            paintBox.fill.update(true);
-            paintBox.stroke.update(true);
-            break;
+              $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
+              paintBox.fill.update(true);
+              paintBox.stroke.update(true);
+              break;
+            }
 
           default:
-            paintBox.fill.update(true);
-            paintBox.stroke.update(true);
-            $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
-            $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
-            var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
+            {
+              paintBox.fill.update(true);
+              paintBox.stroke.update(true);
+              $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
+              $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
+              var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
 
-            if ($$b('#linejoin_' + attr).length) {
-              setStrokeOpt($$b('#linejoin_' + attr)[0]);
+              if ($$b('#linejoin_' + attr).length) {
+                setStrokeOpt($$b('#linejoin_' + attr)[0]);
+              }
+
+              attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
+
+              if ($$b('#linecap_' + attr).length) {
+                setStrokeOpt($$b('#linecap_' + attr)[0]);
+              }
             }
-
-            attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
-
-            if ($$b('#linecap_' + attr).length) {
-              setStrokeOpt($$b('#linecap_' + attr)[0]);
-            }
-
         }
       } // All elements including image and group have opacity
 
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         var opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;
         $$b('#group_opacity').val(opacPerc);
         $$b('#opac_slider').slider('option', 'value', opacPerc);
@@ -29991,13 +30976,17 @@
       }
 
       updateToolButtonState();
-    }; // updates the context panel tools based on the selected element
+    };
+    /**
+    * Updates the context panel tools based on the selected element.
+    * @returns {undefined}
+    */
 
 
     var updateContextPanel = function updateContextPanel() {
       var elem = selectedElement; // If element has just been deleted, consider it null
 
-      if (elem != null && !elem.parentNode) {
+      if (!isNullish(elem) && !elem.parentNode) {
         elem = null;
       }
 
@@ -30009,7 +30998,7 @@
       var menuItems = $$b('#cmenu_canvas li');
       $$b('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' + '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' + ' #use_panel, #a_panel').hide();
 
-      if (elem != null) {
+      if (!isNullish(elem)) {
         var elname = elem.nodeName; // If this is a link with no transform and one child, pretend
         // its child is selected
         // if (elname === 'a') { // && !$(elem).attr('transform')) {
@@ -30026,6 +31015,7 @@
           if (elname === 'image' && svgCanvas.getMode() === 'image') {
             // Prompt for URL if not a data URL
             if (!svgCanvas.getHref(elem).startsWith('data:')) {
+              /* await */
               promptImgURL({
                 cancelDeletes: true
               });
@@ -30192,7 +31182,7 @@
         }
 
         menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');
-        menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (elem != null)
+        menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (!Utils.isNullish(elem))
       } else if (multiselected) {
         $$b('#multiselected_panel').show();
         menuItems.enableContextMenuItems('#group').disableContextMenuItems('#ungroup');
@@ -30214,6 +31204,11 @@
         $$b('#selLayerNames').attr('disabled', 'disabled');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var updateWireFrame = function updateWireFrame() {
       // Test support
@@ -30226,6 +31221,10 @@
     };
 
     var curContext = '';
+    /**
+    * @param {string} [title=svgCanvas.getDocumentTitle()]
+    * @returns {undefined}
+    */
 
     var updateTitle = function updateTitle(title) {
       title = title || svgCanvas.getDocumentTitle();
@@ -30256,17 +31255,17 @@
 
       var isNode = mode === 'pathedit'; // if elems[1] is present, then we have more than one element
 
-      selectedElement = elems.length === 1 || elems[1] == null ? elems[0] : null;
-      multiselected = elems.length >= 2 && elems[1] != null;
+      selectedElement = elems.length === 1 || isNullish(elems[1]) ? elems[0] : null;
+      multiselected = elems.length >= 2 && !isNullish(elems[1]);
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         // unless we're already in always set the mode of the editor to select because
         // upon creation of a text element the editor is switched into
         // select mode and this event fires - we need our UI to be in sync
         if (!isNode) {
           updateToolbar();
         }
-      } // if (elem != null)
+      } // if (!Utils.isNullish(elem))
       // Deal with pathedit mode
 
 
@@ -30299,19 +31298,21 @@
         return;
       }
 
-      multiselected = elems.length >= 2 && elems[1] != null; // Only updating fields for single elements for now
+      multiselected = elems.length >= 2 && !isNullish(elems[1]); // Only updating fields for single elements for now
 
       if (!multiselected) {
         switch (mode) {
           case 'rotate':
-            var ang = svgCanvas.getRotationAngle(elem);
-            $$b('#angle').val(ang);
-            $$b('#tool_reorient').toggleClass('disabled', ang === 0);
-            break;
-          // TODO: Update values that change on move/resize, etc
-          // case 'select':
-          // case 'resize':
-          //   break;
+            {
+              var ang = svgCanvas.getRotationAngle(elem);
+              $$b('#angle').val(ang);
+              $$b('#tool_reorient').toggleClass('disabled', ang === 0);
+              break; // TODO: Update values that change on move/resize, etc
+              // } case 'select': {
+              // } case 'resize': {
+              //   break;
+              // }
+            }
         }
       }
 
@@ -30360,7 +31361,7 @@
           } // Update selectedElement if element is no longer part of the image.
           // This occurs for the text elements in Firefox
 
-        } else if (elem && selectedElement && selectedElement.parentNode == null) {
+        } else if (elem && selectedElement && isNullish(selectedElement.parentNode)) {
           // || elem && elem.tagName == "path" && !multiselected) { // This was added in r1430, but not sure why
           selectedElement = elem;
         }
@@ -30454,6 +31455,10 @@
 
       zoomDone();
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeZoom = function changeZoom(ctl) {
       var zoomlevel = ctl.value / 100;
@@ -30516,9 +31521,13 @@
         curContext = null;
       }
 
-      $$b('#cur_context_panel').toggle(!!context).html(linkStr);
+      $$b('#cur_context_panel').toggle(Boolean(context)).html(linkStr);
       updateTitle();
-    }; // Makes sure the current selected paint is available to work with
+    };
+    /**
+    * Makes sure the current selected paint is available to work with.
+    * @returns {undefined}
+    */
 
 
     var prepPaints = function prepPaints() {
@@ -30527,6 +31536,10 @@
     };
 
     var flyoutFuncs = {};
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var setFlyoutTitles = function setFlyoutTitles() {
       $$b('.tools_flyout').each(function () {
@@ -30545,7 +31558,7 @@
 
     var allHolders = {};
     /**
-     * @param {GenericObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
+     * @param {PlainObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
      * @returns {undefined}
      */
 
@@ -30568,10 +31581,10 @@
           // Get this button's options
           var idSel = '#' + this.getAttribute('id');
 
-          var _Object$entries$find = Object.entries(btnOpts).find(function (_ref10) {
-            var _ref11 = _slicedToArray(_ref10, 2),
-                i = _ref11[0],
-                sel = _ref11[1].sel;
+          var _Object$entries$find = Object.entries(btnOpts).find(function (_ref9) {
+            var _ref10 = _slicedToArray(_ref9, 2),
+                _ = _ref10[0],
+                sel = _ref10[1].sel;
 
             return sel === idSel;
           }),
@@ -30598,22 +31611,22 @@
             if (ev.type === 'keydown') {
               var flyoutIsSelected = $$b(options.parent + '_show').hasClass('tool_button_current');
               var currentOperation = $$b(options.parent + '_show').attr('data-curopt');
-              Object.entries(holders[opts.parent]).some(function (_ref12) {
-                var _ref13 = _slicedToArray(_ref12, 2),
-                    i = _ref13[0],
-                    tool = _ref13[1];
+              Object.entries(holders[opts.parent]).some(function (_ref11) {
+                var _ref12 = _slicedToArray(_ref11, 2),
+                    j = _ref12[0],
+                    tool = _ref12[1];
 
                 if (tool.sel !== currentOperation) {
-                  return;
+                  return false;
                 }
 
                 if (!ev.shiftKey || !flyoutIsSelected) {
                   options = tool;
                 } else {
                   // If flyout is selected, allow shift key to iterate through subitems
-                  i = parseInt(i, 10); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
+                  j = parseInt(j); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
 
-                  options = allHolders[opts.parent][i + 1] || holders[opts.parent][0];
+                  options = allHolders[opts.parent][j + 1] || holders[opts.parent][0];
                 }
 
                 return true;
@@ -30640,6 +31653,8 @@
             icon[0].setAttribute('height', shower.height());
             shower.children(':not(.flyout_arrow_horiz)').remove();
             shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode
+
+            return true;
           };
 
           $$b(this).mouseup(flyoutAction);
@@ -30647,6 +31662,8 @@
           if (opts.key) {
             $$b(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);
           }
+
+          return true;
         });
 
         if (def) {
@@ -30681,6 +31698,7 @@
             holder.data('shown_popop', true);
           }, time);
           evt.preventDefault();
+          return true;
         }).mouseup(function (evt) {
           clearTimeout(timer);
           var opt = $$b(this).attr('data-curopt'); // Is library and popped up, so do nothing
@@ -30698,6 +31716,12 @@
       setFlyoutTitles();
       setFlyoutPositions();
     };
+    /**
+    * @param {string} id
+    * @param {external:jQuery} child
+    * @returns {undefined}
+    */
+
 
     var makeFlyoutHolder = function makeFlyoutHolder(id, child) {
       var div = $$b('<div>', {
@@ -30705,16 +31729,27 @@
         id: id
       }).appendTo('#svg_editor').append(child);
       return div;
-    }; // TODO: Combine this with addDropDown or find other way to optimize
+    };
+    /**
+    * @param {string} elemSel
+    * @param {string} listSel
+    * @param {external:jQuery.Function} callback
+    * @param {PlainObject} opts
+    * @param {boolean} opts.dropUp
+    * @param {boolean} opts.seticon
+    * @param {boolean} opts.multiclick
+    * @todo Combine this with `addDropDown` or find other way to optimize.
+    * @returns {undefined}
+    */
 
 
-    var addAltDropDown = function addAltDropDown(elem, list, callback, opts) {
-      var button = $$b(elem);
+    var addAltDropDown = function addAltDropDown(elemSel, listSel, callback, opts) {
+      var button = $$b(elemSel);
       var dropUp = opts.dropUp;
-      list = $$b(list);
+      var list = $$b(listSel);
 
       if (dropUp) {
-        $$b(elem).addClass('dropup');
+        $$b(elemSel).addClass('dropup');
       }
 
       list.find('li').bind('mouseup', function () {
@@ -30723,7 +31758,11 @@
           $$b(this).addClass('current').siblings().removeClass('current');
         }
 
-        callback.apply(this, arguments);
+        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+          args[_key] = arguments[_key];
+        }
+
+        callback.apply.apply(callback, [this].concat(args));
       });
       var onButton = false;
       $$b(window).mouseup(function (evt) {
@@ -30782,13 +31821,13 @@
      * @param {external:Window} win
      * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext
      * @listens module:svgcanvas.SvgCanvas#event:extension_added
-     * @returns {Promise} Resolves to `undefined`
+     * @returns {Promise|undefined} Resolves to `undefined`
      */
 
     var extAdded =
     /*#__PURE__*/
     function () {
-      var _ref14 = _asyncToGenerator(
+      var _ref13 = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee5(win, ext) {
         var cbCalled, resizeDone, lang, prepResize, runCallback, btnSelects, svgicons, fallbackObj, placementObj, holders;
@@ -30796,7 +31835,7 @@
           while (1) {
             switch (_context5.prev = _context5.next) {
               case 0:
-                prepResize = function _ref15() {
+                prepResize = function _ref14() {
                   if (resizeTimer) {
                     clearTimeout(resizeTimer);
                     resizeTimer = null;
@@ -30815,7 +31854,7 @@
                   break;
                 }
 
-                return _context5.abrupt("return");
+                return _context5.abrupt("return", undefined);
 
               case 3:
                 cbCalled = false;
@@ -30852,6 +31891,10 @@
                 extsPreLang.push(ext);
 
               case 14:
+                /**
+                *
+                * @returns {undefined}
+                */
                 runCallback = function runCallback() {
                   if (ext.callback && !cbCalled) {
                     cbCalled = true;
@@ -30892,70 +31935,78 @@
 
                     switch (tool.type) {
                       case 'tool_button':
-                        html = '<div class="tool_button">' + tool.id + '</div>';
-                        var div = $$b(html).appendTo(panel);
+                        {
+                          html = '<div class="tool_button">' + tool.id + '</div>';
+                          var div = $$b(html).appendTo(panel);
 
-                        if (tool.events) {
-                          $$b.each(tool.events, function (evt, func) {
-                            $$b(div).bind(evt, func);
-                          });
+                          if (tool.events) {
+                            $$b.each(tool.events, function (evt, func) {
+                              $$b(div).bind(evt, func);
+                            });
+                          }
+
+                          break;
                         }
 
-                        break;
-
                       case 'select':
-                        html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
-                        $$b.each(tool.options, function (val, text) {
-                          var sel = val === tool.defval ? ' selected' : '';
-                          html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
-                        });
-                        html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
+                        {
+                          html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
+                          $$b.each(tool.options, function (val, text) {
+                            var sel = val === tool.defval ? ' selected' : '';
+                            html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
+                          });
+                          html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
 
-                        var sel = $$b(html).appendTo(panel).find('select');
-                        $$b.each(tool.events, function (evt, func) {
-                          $$b(sel).bind(evt, func);
-                        });
-                        break;
+                          var sel = $$b(html).appendTo(panel).find('select');
+                          $$b.each(tool.events, function (evt, func) {
+                            $$b(sel).bind(evt, func);
+                          });
+                          break;
+                        }
 
                       case 'button-select':
-                        html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
-                        var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
+                        {
+                          html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
+                          var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
 
-                        if (tool.colnum) {
-                          list.addClass('optcols' + tool.colnum);
-                        } // Creates the tool, hides & adds it, returns the select element
+                          if (tool.colnum) {
+                            list.addClass('optcols' + tool.colnum);
+                          } // Creates the tool, hides & adds it, returns the select element
 
-                        /* const dropdown = */
+                          /* const dropdown = */
 
 
-                        $$b(html).appendTo(panel).children();
-                        btnSelects.push({
-                          elem: '#' + tool.id,
-                          list: '#' + tool.id + '_opts',
-                          title: tool.title,
-                          callback: tool.events.change,
-                          cur: '#cur_' + tool.id
-                        });
-                        break;
+                          $$b(html).appendTo(panel).children();
+                          btnSelects.push({
+                            elem: '#' + tool.id,
+                            list: '#' + tool.id + '_opts',
+                            title: tool.title,
+                            callback: tool.events.change,
+                            cur: '#cur_' + tool.id
+                          });
+                          break;
+                        }
 
                       case 'input':
-                        html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
-                        // Add to given tool.panel
+                        {
+                          html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
+                          // Add to given tool.panel
 
-                        var inp = $$b(html).appendTo(panel).find('input');
+                          var inp = $$b(html).appendTo(panel).find('input');
 
-                        if (tool.spindata) {
-                          inp.SpinButton(tool.spindata);
+                          if (tool.spindata) {
+                            inp.SpinButton(tool.spindata);
+                          }
+
+                          if (tool.events) {
+                            $$b.each(tool.events, function (evt, func) {
+                              inp.bind(evt, func);
+                            });
+                          }
+
+                          break;
                         }
 
-                        if (tool.events) {
-                          $$b.each(tool.events, function (evt, func) {
-                            inp.bind(evt, func);
-                          });
-                        }
-
-                        break;
-
                       default:
                         break;
                     }
@@ -31228,6 +32279,7 @@
                 }
 
                 return _context5.abrupt("return", new Promise(function (resolve, reject) {
+                  // eslint-disable-line promise/avoid-new
                   $$b.svgIcons(svgicons, {
                     w: 24,
                     h: 24,
@@ -31259,10 +32311,17 @@
         }, _callee5, this);
       }));
 
-      return function extAdded(_x3, _x4) {
-        return _ref14.apply(this, arguments);
+      return function extAdded(_x4, _x5) {
+        return _ref13.apply(this, arguments);
       };
     }();
+    /**
+    * @param {string} color
+    * @param {Float} opac
+    * @param {string} type
+    * @returns {module:jGraduate~Paint}
+    */
+
 
     var getPaint = function getPaint(color, opac, type) {
       // update the editor's fill paint
@@ -31310,6 +32369,7 @@
       }
 
       if (!exportWindow || exportWindow.closed) {
+        /* await */
         $$b.alert(uiStrings$1.notification.popupWindowBlocked);
         return;
       }
@@ -31321,14 +32381,15 @@
     svgCanvas.bind('updateCanvas',
     /**
      * @param {external:Window} win
-     * @param {false} center
-     * @param {module:math.XYObject} newCtr
+     * @param {PlainObject} centerInfo
+     * @param {false} centerInfo.center
+     * @param {module:math.XYObject} centerInfo.newCtr
      * @listens module:svgcanvas.SvgCanvas#event:updateCanvas
      * @returns {undefined}
      */
-    function (win, _ref16) {
-      var center = _ref16.center,
-          newCtr = _ref16.newCtr;
+    function (win, _ref15) {
+      var center = _ref15.center,
+          newCtr = _ref15.newCtr;
       updateCanvas(center, newCtr);
     });
     svgCanvas.bind('contextset', contextChanged);
@@ -31359,14 +32420,25 @@
     });
     setBackground($$b.pref('bkgd_color'), $$b.pref('bkgd_url'));
     $$b('#image_save_opts input').val([$$b.pref('img_save')]);
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
 
     var changeRectRadius = function changeRectRadius(ctl) {
       svgCanvas.setRectRadius(ctl.value);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeFontSize = function changeFontSize(ctl) {
       svgCanvas.setFontSize(ctl.value);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeStrokeWidth = function changeStrokeWidth(ctl) {
       var val = ctl.value;
@@ -31377,14 +32449,24 @@
 
       svgCanvas.setStrokeWidth(val);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeRotationAngle = function changeRotationAngle(ctl) {
       svgCanvas.setRotationAngle(ctl.value);
-      $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value, 10) === 0);
+      $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);
     };
+    /**
+    * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+    * @param {string} [val=ctl.value]
+    * @returns {undefined}
+    */
+
 
     var changeOpacity = function changeOpacity(ctl, val) {
-      if (val == null) {
+      if (isNullish(val)) {
         val = ctl.value;
       }
 
@@ -31396,9 +32478,16 @@
 
       svgCanvas.setOpacity(val / 100);
     };
+    /**
+    * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+    * @param {string} [val=ctl.value]
+    * @param {boolean} noUndo
+    * @returns {undefined}
+    */
+
 
     var changeBlur = function changeBlur(ctl, val, noUndo) {
-      if (val == null) {
+      if (isNullish(val)) {
         val = ctl.value;
       }
 
@@ -31431,29 +32520,72 @@
     }); // fired when user wants to move elements to another layer
 
     var promptMoveLayerOnce = false;
-    $$b('#selLayerNames').change(function () {
-      var destLayer = this.options[this.selectedIndex].value;
-      var confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+    $$b('#selLayerNames').change(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee6() {
+      var destLayer, confirmStr, moveToLayer, ok;
+      return regeneratorRuntime.wrap(function _callee6$(_context6) {
+        while (1) {
+          switch (_context6.prev = _context6.next) {
+            case 0:
+              destLayer = this.options[this.selectedIndex].value;
+              confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+              /**
+              * @param {boolean} ok
+              * @returns {undefined}
+              */
 
-      var moveToLayer = function moveToLayer(ok) {
-        if (!ok) {
-          return;
+              moveToLayer = function moveToLayer(ok) {
+                if (!ok) {
+                  return;
+                }
+
+                promptMoveLayerOnce = true;
+                svgCanvas.moveSelectedToLayer(destLayer);
+                svgCanvas.clearSelection();
+                populateLayers();
+              };
+
+              if (!destLayer) {
+                _context6.next = 14;
+                break;
+              }
+
+              if (!promptMoveLayerOnce) {
+                _context6.next = 8;
+                break;
+              }
+
+              moveToLayer(true);
+              _context6.next = 14;
+              break;
+
+            case 8:
+              _context6.next = 10;
+              return $$b.confirm(confirmStr);
+
+            case 10:
+              ok = _context6.sent;
+
+              if (ok) {
+                _context6.next = 13;
+                break;
+              }
+
+              return _context6.abrupt("return");
+
+            case 13:
+              moveToLayer(true);
+
+            case 14:
+            case "end":
+              return _context6.stop();
+          }
         }
-
-        promptMoveLayerOnce = true;
-        svgCanvas.moveSelectedToLayer(destLayer);
-        svgCanvas.clearSelection();
-        populateLayers();
-      };
-
-      if (destLayer) {
-        if (promptMoveLayerOnce) {
-          moveToLayer(true);
-        } else {
-          $$b.confirm(confirmStr, moveToLayer);
-        }
-      }
-    });
+      }, _callee6, this);
+    })));
     $$b('#font_family').change(function () {
       svgCanvas.setFontFamily(this.value);
     });
@@ -31482,8 +32614,10 @@
       var valid = isValidUnit(attr, val, selectedElement);
 
       if (!valid) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         this.value = selectedElement.getAttribute(attr);
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
@@ -31512,6 +32646,7 @@
       }
 
       this.blur();
+      return true;
     }); // Prevent selection of elements when shift-clicking
 
     $$b('#palette').mouseover(function () {
@@ -31558,7 +32693,7 @@
           keypan = false;
       $$b('#svgcanvas').bind('mousemove mouseup', function (evt) {
         if (panning === false) {
-          return;
+          return true;
         }
 
         wArea.scrollLeft -= evt.clientX - lastX;
@@ -31578,6 +32713,8 @@
           lastY = evt.clientY;
           return false;
         }
+
+        return true;
       });
       $$b(window).mouseup(function () {
         panning = false;
@@ -31762,7 +32899,7 @@
         return;
       }
 
-      var perc = parseInt($$b(this).text().split('%')[0], 10);
+      var perc = parseInt($$b(this).text().split('%')[0]);
       changeOpacity(false, perc);
     }, true); // For slider usage, see: http://jqueryui.com/demos/slider/
 
@@ -31840,13 +32977,18 @@
 
     (function () {
       var inp;
+      /**
+      *
+      * @returns {undefined}
+      */
 
       var unfocus = function unfocus() {
         $$b(inp).blur();
       };
 
       $$b('#svg_editor').find('button, select, input:not(#text)').focus(function () {
-        inp = this;
+        inp = this; // eslint-disable-line consistent-this
+
         uiContext = 'toolbars';
         workarea.mousedown(unfocus);
       }).blur(function () {
@@ -31858,60 +33000,110 @@
         }
       });
     })();
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHPath = function clickFHPath() {
       if (toolButtonClick('#tool_fhpath')) {
         svgCanvas.setMode('fhpath');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickLine = function clickLine() {
       if (toolButtonClick('#tool_line')) {
         svgCanvas.setMode('line');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickSquare = function clickSquare() {
       if (toolButtonClick('#tool_square')) {
         svgCanvas.setMode('square');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickRect = function clickRect() {
       if (toolButtonClick('#tool_rect')) {
         svgCanvas.setMode('rect');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHRect = function clickFHRect() {
       if (toolButtonClick('#tool_fhrect')) {
         svgCanvas.setMode('fhrect');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickCircle = function clickCircle() {
       if (toolButtonClick('#tool_circle')) {
         svgCanvas.setMode('circle');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickEllipse = function clickEllipse() {
       if (toolButtonClick('#tool_ellipse')) {
         svgCanvas.setMode('ellipse');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHEllipse = function clickFHEllipse() {
       if (toolButtonClick('#tool_fhellipse')) {
         svgCanvas.setMode('fhellipse');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickImage = function clickImage() {
       if (toolButtonClick('#tool_image')) {
         svgCanvas.setMode('image');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickZoom = function clickZoom() {
       if (toolButtonClick('#tool_zoom')) {
@@ -31919,6 +33111,11 @@
         workarea.css('cursor', zoomInIcon);
       }
     };
+    /**
+    * @param {Float} multiplier
+    * @returns {undefined}
+    */
+
 
     var zoomImage = function zoomImage(multiplier) {
       var res = svgCanvas.getResolution();
@@ -31929,6 +33126,11 @@
       zoomDone();
       updateCanvas(true);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var dblclickZoom = function dblclickZoom() {
       if (toolButtonClick('#tool_zoom')) {
@@ -31936,38 +33138,67 @@
         setSelectMode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickText = function clickText() {
       if (toolButtonClick('#tool_text')) {
         svgCanvas.setMode('text');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickPath = function clickPath() {
       if (toolButtonClick('#tool_path')) {
         svgCanvas.setMode('path');
       }
-    }; // Delete is a contextual tool that only appears in the ribbon if
-    // an element has been selected
+    };
+    /**
+    * Delete is a contextual tool that only appears in the ribbon if
+    * an element has been selected.
+    * @returns {undefined}
+    */
 
 
     var deleteSelected = function deleteSelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.deleteSelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var cutSelected = function cutSelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.cutSelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var copySelected = function copySelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.copySelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var pasteInCenter = function pasteInCenter() {
       var zoom = svgCanvas.getZoom();
@@ -31975,49 +33206,114 @@
       var y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;
       svgCanvas.pasteElements('point', x, y);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var moveToTopSelected = function moveToTopSelected() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveToTopSelectedElement();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var moveToBottomSelected = function moveToBottomSelected() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveToBottomSelectedElement();
       }
     };
+    /**
+    * @param {"Up"|"Down"} dir
+    * @returns {undefined}
+    */
+
 
     var moveUpDownSelected = function moveUpDownSelected(dir) {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveUpDownSelected(dir);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var convertToPath$$1 = function convertToPath$$1() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.convertToPath();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var reorientPath = function reorientPath() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         path.reorient();
       }
     };
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var makeHyperlink = function makeHyperlink() {
-      if (selectedElement != null || multiselected) {
-        $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://', function (url) {
-          if (url) {
-            svgCanvas.makeHyperlink(url);
+
+    var makeHyperlink =
+    /*#__PURE__*/
+    function () {
+      var _ref17 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee7() {
+        var url;
+        return regeneratorRuntime.wrap(function _callee7$(_context7) {
+          while (1) {
+            switch (_context7.prev = _context7.next) {
+              case 0:
+                if (!(!isNullish(selectedElement) || multiselected)) {
+                  _context7.next = 5;
+                  break;
+                }
+
+                _context7.next = 3;
+                return $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://');
+
+              case 3:
+                url = _context7.sent;
+
+                if (url) {
+                  svgCanvas.makeHyperlink(url);
+                }
+
+              case 5:
+              case "end":
+                return _context7.stop();
+            }
           }
-        });
-      }
-    };
+        }, _callee7, this);
+      }));
+
+      return function makeHyperlink() {
+        return _ref17.apply(this, arguments);
+      };
+    }();
+    /**
+    * @param {Float} dx
+    * @param {Float} dy
+    * @returns {undefined}
+    */
+
 
     var moveSelected = function moveSelected(dx, dy) {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         if (curConfig.gridSnapping) {
           // Use grid snap value regardless of zoom level
           var multi = svgCanvas.getZoom() * curConfig.snappingStep;
@@ -32028,24 +33324,44 @@
         svgCanvas.moveSelectedElements(dx, dy);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var linkControlPoints = function linkControlPoints() {
       $$b('#tool_node_link').toggleClass('push_button_pressed tool_button');
       var linked = $$b('#tool_node_link').hasClass('push_button_pressed');
       path.linkControlPoints(linked);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clonePathNode = function clonePathNode() {
       if (path.getNodePoint()) {
         path.clonePathNode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var deletePathNode = function deletePathNode() {
       if (path.getNodePoint()) {
         path.deletePathNode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var addSubPath = function addSubPath() {
       var button = $$b('#tool_add_subpath');
@@ -32053,21 +33369,42 @@
       button.toggleClass('push_button_pressed tool_button');
       path.addSubPath(sp);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var opencloseSubPath = function opencloseSubPath() {
       path.opencloseSubPath();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var selectNext = function selectNext() {
       svgCanvas.cycleElement(1);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var selectPrev = function selectPrev() {
       svgCanvas.cycleElement(0);
     };
+    /**
+    * @param {0|1} cw
+    * @param {Integer} step
+    * @returns {undefined}
+    */
+
 
     var rotateSelected = function rotateSelected(cw, step) {
-      if (selectedElement == null || multiselected) {
+      if (isNullish(selectedElement) || multiselected) {
         return;
       }
 
@@ -32081,43 +33418,86 @@
     };
     /**
      * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument
-     * @returns {undefined}
+     * @returns {Promise} Resolves to `undefined`
      */
 
 
-    var clickClear = function clickClear() {
-      var _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2),
-          x = _curConfig$dimensions[0],
-          y = _curConfig$dimensions[1];
+    var clickClear =
+    /*#__PURE__*/
+    function () {
+      var _ref18 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee8() {
+        var _curConfig$dimensions, x, y, ok;
 
-      $$b.confirm(uiStrings$1.notification.QwantToClear, function (ok) {
-        if (!ok) {
-          return;
-        }
+        return regeneratorRuntime.wrap(function _callee8$(_context8) {
+          while (1) {
+            switch (_context8.prev = _context8.next) {
+              case 0:
+                _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2), x = _curConfig$dimensions[0], y = _curConfig$dimensions[1];
+                _context8.next = 3;
+                return $$b.confirm(uiStrings$1.notification.QwantToClear);
+
+              case 3:
+                ok = _context8.sent;
+
+                if (ok) {
+                  _context8.next = 6;
+                  break;
+                }
+
+                return _context8.abrupt("return");
+
+              case 6:
+                setSelectMode();
+                svgCanvas.clear();
+                svgCanvas.setResolution(x, y);
+                updateCanvas(true);
+                zoomImage();
+                populateLayers();
+                updateContextPanel();
+                prepPaints();
+                svgCanvas.runExtensions('onNewDocument');
+
+              case 15:
+              case "end":
+                return _context8.stop();
+            }
+          }
+        }, _callee8, this);
+      }));
+
+      return function clickClear() {
+        return _ref18.apply(this, arguments);
+      };
+    }();
+    /**
+    *
+    * @returns {false}
+    */
 
-        setSelectMode();
-        svgCanvas.clear();
-        svgCanvas.setResolution(x, y);
-        updateCanvas(true);
-        zoomImage();
-        populateLayers();
-        updateContextPanel();
-        prepPaints();
-        svgCanvas.runExtensions('onNewDocument');
-      });
-    };
 
     var clickBold = function clickBold() {
       svgCanvas.setBold(!svgCanvas.getBold());
       updateContextPanel();
       return false;
     };
+    /**
+    *
+    * @returns {false}
+    */
+
 
     var clickItalic = function clickItalic() {
       svgCanvas.setItalic(!svgCanvas.getItalic());
       updateContextPanel();
       return false;
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickSave = function clickSave() {
       // In the future, more options can be provided here
@@ -32129,117 +33509,141 @@
     };
 
     var loadingURL;
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var clickExport = function clickExport() {
-      $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
-      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
-      'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'],
+    var clickExport =
+    /*#__PURE__*/
+    function () {
+      var _ref19 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref17 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee6(imgType) {
-          var exportWindowName, openExportWindow, chrome, quality;
-          return regeneratorRuntime.wrap(function _callee6$(_context6) {
-            while (1) {
-              switch (_context6.prev = _context6.next) {
-                case 0:
-                  openExportWindow = function _ref18() {
-                    var str = uiStrings$1.notification.loadingImage;
+      regeneratorRuntime.mark(function _callee9() {
+        var imgType, exportWindowName, openExportWindow, chrome, quality;
+        return regeneratorRuntime.wrap(function _callee9$(_context9) {
+          while (1) {
+            switch (_context9.prev = _context9.next) {
+              case 0:
+                openExportWindow = function _ref20() {
+                  var loadingImage = uiStrings$1.notification.loadingImage;
 
-                    if (curConfig.exportWindowType === 'new') {
-                      editor.exportWindowCt++;
-                    }
+                  if (curConfig.exportWindowType === 'new') {
+                    editor.exportWindowCt++;
+                  }
 
-                    exportWindowName = curConfig.canvasName + editor.exportWindowCt;
-                    var popHTML, popURL;
+                  exportWindowName = curConfig.canvasName + editor.exportWindowCt;
+                  var popHTML, popURL;
 
-                    if (loadingURL) {
-                      popURL = loadingURL;
+                  if (loadingURL) {
+                    popURL = loadingURL;
+                  } else {
+                    popHTML = "<!DOCTYPE html><html>\n          <head>\n            <meta charset=\"utf-8\">\n            <title>".concat(loadingImage, "</title>\n          </head>\n          <body><h1>").concat(loadingImage, "</h1></body>\n        <html>");
+
+                    if (typeof URL !== 'undefined' && URL.createObjectURL) {
+                      var blob = new Blob([popHTML], {
+                        type: 'text/html'
+                      });
+                      popURL = URL.createObjectURL(blob);
                     } else {
-                      popHTML = "<!DOCTYPE html><html>\n            <head>\n              <meta charset=\"utf-8\">\n              <title>".concat(str, "</title>\n            </head>\n            <body><h1>").concat(str, "</h1></body>\n          <html>");
-
-                      if (typeof URL !== 'undefined' && URL.createObjectURL) {
-                        var blob = new Blob([popHTML], {
-                          type: 'text/html'
-                        });
-                        popURL = URL.createObjectURL(blob);
-                      } else {
-                        popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
-                      }
-
-                      loadingURL = popURL;
+                      popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
                     }
 
-                    exportWindow = window.open(popURL, exportWindowName);
-                  };
-
-                  if (imgType) {
-                    _context6.next = 3;
-                    break;
+                    loadingURL = popURL;
                   }
 
-                  return _context6.abrupt("return");
+                  exportWindow = window.open(popURL, exportWindowName);
+                };
 
-                case 3:
-                  chrome = isChrome();
+                _context9.next = 3;
+                return $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
+                // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
+                'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'], function () {
+                  var sel = $$b(this);
 
-                  if (!(imgType === 'PDF')) {
-                    _context6.next = 9;
-                    break;
+                  if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
+                    if (!$$b('#image-slider').length) {
+                      $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
+                    }
+                  } else {
+                    $$b('#image-slider').parent().remove();
                   }
+                });
 
-                  if (!customExportPDF && !chrome) {
-                    openExportWindow();
-                  }
+              case 3:
+                imgType = _context9.sent;
 
-                  svgCanvas.exportPDF(exportWindowName);
-                  _context6.next = 13;
+                if (imgType) {
+                  _context9.next = 6;
                   break;
+                }
 
-                case 9:
-                  if (!customExportImage) {
-                    openExportWindow();
-                  }
+                return _context9.abrupt("return");
 
-                  quality = parseInt($$b('#image-slider').val(), 10) / 100;
-                  /* const results = */
+              case 6:
+                chrome = isChrome();
 
-                  _context6.next = 13;
-                  return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+                if (!(imgType === 'PDF')) {
+                  _context9.next = 12;
+                  break;
+                }
 
-                case 13:
-                case "end":
-                  return _context6.stop();
-              }
+                if (!customExportPDF && !chrome) {
+                  openExportWindow();
+                }
+
+                svgCanvas.exportPDF(exportWindowName);
+                _context9.next = 16;
+                break;
+
+              case 12:
+                if (!customExportImage) {
+                  openExportWindow();
+                }
+
+                quality = parseInt($$b('#image-slider').val()) / 100;
+                /* const results = */
+
+                _context9.next = 16;
+                return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+
+              case 16:
+              case "end":
+                return _context9.stop();
             }
-          }, _callee6, this);
-        }));
-
-        return function (_x5) {
-          return _ref17.apply(this, arguments);
-        };
-      }(), function () {
-        var sel = $$b(this);
-
-        if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
-          if (!$$b('#image-slider').length) {
-            $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
           }
-        } else {
-          $$b('#image-slider').parent().remove();
-        }
-      });
-    }; // by default, svgCanvas.open() is a no-op.
-    // it is up to an extension mechanism (opera widget, etc)
-    // to call setCustomHandlers() which will make it do something
+        }, _callee9, this);
+      }));
+
+      return function clickExport() {
+        return _ref19.apply(this, arguments);
+      };
+    }();
+    /**
+     * By default, svgCanvas.open() is a no-op. It is up to an extension
+     *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which
+     *  will make it do something.
+     * @returns {undefined}
+     */
 
 
     var clickOpen = function clickOpen() {
       svgCanvas.open();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
+
+    var clickImport = function clickImport() {
+      /* */
+    };
+    /**
+    *
+    * @returns {undefined}
+    */
 
-    var clickImport = function clickImport() {};
 
     var clickUndo = function clickUndo() {
       if (undoMgr.getUndoStackSize() > 0) {
@@ -32247,6 +33651,11 @@
         populateLayers();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickRedo = function clickRedo() {
       if (undoMgr.getRedoStackSize() > 0) {
@@ -32254,6 +33663,11 @@
         populateLayers();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickGroup = function clickGroup() {
       // group
@@ -32263,15 +33677,30 @@
         svgCanvas.ungroupSelectedElement();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickClone = function clickClone() {
       svgCanvas.cloneSelectedElements(20, 20);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickAlign = function clickAlign() {
       var letter = this.id.replace('tool_align', '').charAt(0);
       svgCanvas.alignSelectedElements(letter, $$b('#align_relative_to').val());
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickWireframe = function clickWireframe() {
       $$b('#tool_wireframe').toggleClass('push_button_pressed tool_button');
@@ -32299,6 +33728,10 @@
     }).css('position', 'absolute');
     var docprops = false;
     var preferences = false;
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var showDocProperties = function showDocProperties() {
       if (docprops) {
@@ -32321,6 +33754,11 @@
       $$b('#canvas_title').val(svgCanvas.getDocumentTitle());
       $$b('#svg_docprops').show();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var showPreferences = function showPreferences() {
       if (preferences) {
@@ -32330,8 +33768,6 @@
       preferences = true;
       $$b('#main_menu').hide(); // Update background color with current one
 
-      var blocks = $$b('#bg_blocks div');
-      var curBg = 'cur_background';
       var canvasBg = curPrefs.bkgd_color;
       var url = $$b.pref('bkgd_url');
       blocks.each(function () {
@@ -32357,41 +33793,94 @@
       $$b('#grid_color').attr('value', curConfig.gridColor);
       $$b('#svg_prefs').show();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var hideSourceEditor = function hideSourceEditor() {
       $$b('#svg_source_editor').hide();
       editingsource = false;
       $$b('#svg_source_textarea').blur();
     };
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var saveSourceEditor = function saveSourceEditor() {
-      if (!editingsource) {
-        return;
-      }
 
-      var saveChanges = function saveChanges() {
-        svgCanvas.clearSelection();
-        hideSourceEditor();
-        zoomImage();
-        populateLayers();
-        updateTitle();
-        prepPaints();
-      };
+    var saveSourceEditor =
+    /*#__PURE__*/
+    function () {
+      var _ref21 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee10() {
+        var saveChanges, ok;
+        return regeneratorRuntime.wrap(function _callee10$(_context10) {
+          while (1) {
+            switch (_context10.prev = _context10.next) {
+              case 0:
+                if (editingsource) {
+                  _context10.next = 2;
+                  break;
+                }
 
-      if (!svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
-        $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource, function (ok) {
-          if (!ok) {
-            return false;
+                return _context10.abrupt("return");
+
+              case 2:
+                saveChanges = function saveChanges() {
+                  svgCanvas.clearSelection();
+                  hideSourceEditor();
+                  zoomImage();
+                  populateLayers();
+                  updateTitle();
+                  prepPaints();
+                };
+
+                if (svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
+                  _context10.next = 11;
+                  break;
+                }
+
+                _context10.next = 6;
+                return $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource);
+
+              case 6:
+                ok = _context10.sent;
+
+                if (ok) {
+                  _context10.next = 9;
+                  break;
+                }
+
+                return _context10.abrupt("return");
+
+              case 9:
+                saveChanges();
+                return _context10.abrupt("return");
+
+              case 11:
+                saveChanges();
+                setSelectMode();
+
+              case 13:
+              case "end":
+                return _context10.stop();
+            }
           }
+        }, _callee10, this);
+      }));
 
-          saveChanges();
-        });
-      } else {
-        saveChanges();
-      }
+      return function saveSourceEditor() {
+        return _ref21.apply(this, arguments);
+      };
+    }();
+    /**
+    *
+    * @returns {undefined}
+    */
 
-      setSelectMode();
-    };
 
     var hideDocProperties = function hideDocProperties() {
       $$b('#svg_docprops').hide();
@@ -32400,11 +33889,21 @@
       $$b('#image_save_opts input').val([$$b.pref('img_save')]);
       docprops = false;
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var hidePreferences = function hidePreferences() {
       $$b('#svg_prefs').hide();
       preferences = false;
     };
+    /**
+    *
+    * @returns {boolean} Whether there were problems saving the document properties
+    */
+
 
     var saveDocProperties = function saveDocProperties() {
       // set title
@@ -32418,22 +33917,27 @@
           h = height.val();
 
       if (w !== 'fit' && !isValidUnit('width', w)) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         width.parent().addClass('error');
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
       width.parent().removeClass('error');
 
       if (h !== 'fit' && !isValidUnit('height', h)) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         height.parent().addClass('error');
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
       height.parent().removeClass('error');
 
       if (!svgCanvas.setResolution(w, h)) {
+        /* await */
         $$b.alert(uiStrings$1.notification.noContentToFitTo);
         return false;
       } // Set image save option
@@ -32442,6 +33946,7 @@
       $$b.pref('img_save', $$b('#image_save_opts :checked').val());
       updateCanvas();
       hideDocProperties();
+      return true;
     };
     /**
     * Save user preferences based on current values in the UI.
@@ -32454,12 +33959,12 @@
     /*#__PURE__*/
     _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee7() {
-      var color, lang, _ref20, langParam, langData;
+    regeneratorRuntime.mark(function _callee11() {
+      var color, lang, _ref23, langParam, langData;
 
-      return regeneratorRuntime.wrap(function _callee7$(_context7) {
+      return regeneratorRuntime.wrap(function _callee11$(_context11) {
         while (1) {
-          switch (_context7.prev = _context7.next) {
+          switch (_context11.prev = _context11.next) {
             case 0:
               // Set background
               color = $$b('#bg_blocks div.cur_background').css('background-color') || '#FFF';
@@ -32468,18 +33973,18 @@
               lang = $$b('#lang_select').val();
 
               if (!(lang !== $$b.pref('lang'))) {
-                _context7.next = 11;
+                _context11.next = 11;
                 break;
               }
 
-              _context7.next = 6;
+              _context11.next = 6;
               return editor.putLocale(lang, goodLangs, curConfig);
 
             case 6:
-              _ref20 = _context7.sent;
-              langParam = _ref20.langParam;
-              langData = _ref20.langData;
-              _context7.next = 11;
+              _ref23 = _context11.sent;
+              langParam = _ref23.langParam;
+              langData = _ref23.langData;
+              _context11.next = 11;
               return setLang(langParam, langData);
 
             case 11:
@@ -32503,43 +34008,95 @@
 
             case 22:
             case "end":
-              return _context7.stop();
+              return _context11.stop();
           }
         }
-      }, _callee7, this);
+      }, _callee11, this);
     }));
 
     var resetScrollPos = $$b.noop;
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var cancelOverlays = function cancelOverlays() {
-      $$b('#dialog_box').hide();
+    var cancelOverlays =
+    /*#__PURE__*/
+    function () {
+      var _ref24 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee12() {
+        var ok;
+        return regeneratorRuntime.wrap(function _callee12$(_context12) {
+          while (1) {
+            switch (_context12.prev = _context12.next) {
+              case 0:
+                $$b('#dialog_box').hide();
 
-      if (!editingsource && !docprops && !preferences) {
-        if (curContext) {
-          svgCanvas.leaveContext();
-        }
+                if (!(!editingsource && !docprops && !preferences)) {
+                  _context12.next = 4;
+                  break;
+                }
 
-        return;
-      }
+                if (curContext) {
+                  svgCanvas.leaveContext();
+                }
 
-      if (editingsource) {
-        if (origSource !== $$b('#svg_source_textarea').val()) {
-          $$b.confirm(uiStrings$1.notification.QignoreSourceChanges, function (ok) {
-            if (ok) {
-              hideSourceEditor();
+                return _context12.abrupt("return");
+
+              case 4:
+                if (!editingsource) {
+                  _context12.next = 15;
+                  break;
+                }
+
+                if (!(origSource !== $$b('#svg_source_textarea').val())) {
+                  _context12.next = 12;
+                  break;
+                }
+
+                _context12.next = 8;
+                return $$b.confirm(uiStrings$1.notification.QignoreSourceChanges);
+
+              case 8:
+                ok = _context12.sent;
+
+                if (ok) {
+                  hideSourceEditor();
+                }
+
+                _context12.next = 13;
+                break;
+
+              case 12:
+                hideSourceEditor();
+
+              case 13:
+                _context12.next = 16;
+                break;
+
+              case 15:
+                if (docprops) {
+                  hideDocProperties();
+                } else if (preferences) {
+                  hidePreferences();
+                }
+
+              case 16:
+                resetScrollPos();
+
+              case 17:
+              case "end":
+                return _context12.stop();
             }
-          });
-        } else {
-          hideSourceEditor();
-        }
-      } else if (docprops) {
-        hideDocProperties();
-      } else if (preferences) {
-        hidePreferences();
-      }
+          }
+        }, _callee12, this);
+      }));
 
-      resetScrollPos();
-    };
+      return function cancelOverlays() {
+        return _ref24.apply(this, arguments);
+      };
+    }();
 
     var winWh = {
       width: $$b(window).width(),
@@ -32562,9 +34119,13 @@
       editor.ready(function () {
         // TODO: Find better way to detect when to do this to minimize
         // flickering effect
-        setTimeout(function () {
-          resetScrollPos();
-        }, 500);
+        return new Promise(function (resolve, reject) {
+          // eslint-disable-line promise/avoid-new
+          setTimeout(function () {
+            resetScrollPos();
+            resolve();
+          }, 500);
+        });
       });
       workarea.scroll(function () {
         curScrollPos = {
@@ -32593,6 +34154,7 @@
       }
     });
     $$b('#url_notice').click(function () {
+      /* await */
       $$b.alert(this.title);
     });
     $$b('#change_image_url').click(promptImgURL); // added these event handlers for all the push buttons so they
@@ -32635,8 +34197,13 @@
           button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');
         }
       }
-    } // TODO: go back to the color boxes having white background-color and then setting
-    //  background-image to none.png (otherwise partially transparent gradients look weird)
+    }
+    /**
+    * @param {external:jQuery} elem
+    * @todo Go back to the color boxes having white background-color and then setting
+    *  background-image to none.png (otherwise partially transparent gradients look weird)
+    * @returns {undefined}
+    */
 
 
     var colorPicker = function colorPicker(elem) {
@@ -32671,131 +34238,149 @@
       });
     };
 
-    var PaintBox = function PaintBox(container, type) {
-      var paintColor, paintOpacity;
-      var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
+    var PaintBox =
+    /*#__PURE__*/
+    function () {
+      function PaintBox(container, type) {
+        _classCallCheck(this, PaintBox);
 
-      var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n        <rect width=\"16.5\" height=\"16.5\"\n          fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n        <defs><linearGradient id=\"gradbox_\"/></defs>\n      </svg>"), 'text/xml');
-      var docElem = svgdocbox.documentElement;
-      docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
-      docElem.setAttribute('width', 16.5);
-      this.rect = docElem.firstElementChild;
-      this.defs = docElem.getElementsByTagName('defs')[0];
-      this.grad = this.defs.firstElementChild;
-      this.paint = new $$b.jGraduate.Paint({
-        solidColor: cur.color
-      });
-      this.type = type;
+        var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
 
-      this.setPaint = function (paint, apply) {
-        this.paint = paint;
-        var ptype = paint.type;
-        var opac = paint.alpha / 100;
-        var fillAttr = 'none';
+        var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n          <rect width=\"16.5\" height=\"16.5\"\n            fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n          <defs><linearGradient id=\"gradbox_\"/></defs>\n        </svg>"), 'text/xml');
+        var docElem = svgdocbox.documentElement;
+        docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
+        docElem.setAttribute('width', 16.5);
+        this.rect = docElem.firstElementChild;
+        this.defs = docElem.getElementsByTagName('defs')[0];
+        this.grad = this.defs.firstElementChild;
+        this.paint = new $$b.jGraduate.Paint({
+          solidColor: cur.color
+        });
+        this.type = type;
+      }
 
-        switch (ptype) {
-          case 'solidColor':
-            fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
-            break;
+      _createClass(PaintBox, [{
+        key: "setPaint",
+        value: function setPaint(paint, apply) {
+          this.paint = paint;
+          var ptype = paint.type;
+          var opac = paint.alpha / 100;
+          var fillAttr = 'none';
 
-          case 'linearGradient':
-          case 'radialGradient':
-            this.grad.remove();
-            this.grad = this.defs.appendChild(paint[ptype]);
-            var id = this.grad.id = 'gradbox_' + this.type;
-            fillAttr = 'url(#' + id + ')';
-            break;
-        }
-
-        this.rect.setAttribute('fill', fillAttr);
-        this.rect.setAttribute('opacity', opac);
-
-        if (apply) {
-          svgCanvas.setColor(this.type, paintColor, true);
-          svgCanvas.setPaintOpacity(this.type, paintOpacity, true);
-        }
-      };
-
-      this.update = function (apply) {
-        if (!selectedElement) {
-          return;
-        }
-
-        var type = this.type;
-
-        switch (selectedElement.tagName) {
-          case 'use':
-          case 'image':
-          case 'foreignObject':
-            // These elements don't have fill or stroke, so don't change
-            // the current value
-            return;
-
-          case 'g':
-          case 'a':
-            {
-              var childs = selectedElement.getElementsByTagName('*');
-              var gPaint = null;
-
-              for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
-                var elem = childs[_i3];
-                var p = elem.getAttribute(type);
-
-                if (_i3 === 0) {
-                  gPaint = p;
-                } else if (gPaint !== p) {
-                  gPaint = null;
-                  break;
-                }
-              }
-
-              if (gPaint === null) {
-                // No common color, don't update anything
-                paintColor = null;
-                return;
-              }
-
-              paintColor = gPaint;
-              paintOpacity = 1;
+          switch (ptype) {
+            case 'solidColor':
+              fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
               break;
-            }
 
-          default:
-            paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+            case 'linearGradient':
+            case 'radialGradient':
+              {
+                this.grad.remove();
+                this.grad = this.defs.appendChild(paint[ptype]);
+                var id = this.grad.id = 'gradbox_' + this.type;
+                fillAttr = 'url(#' + id + ')';
+                break;
+              }
+          }
 
-            if (isNaN(paintOpacity)) {
-              paintOpacity = 1.0;
-            }
+          this.rect.setAttribute('fill', fillAttr);
+          this.rect.setAttribute('opacity', opac);
 
-            var defColor = type === 'fill' ? 'black' : 'none';
-            paintColor = selectedElement.getAttribute(type) || defColor;
+          if (apply) {
+            svgCanvas.setColor(this.type, this._paintColor, true);
+            svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);
+          }
         }
+      }, {
+        key: "update",
+        value: function update(apply) {
+          if (!selectedElement) {
+            return;
+          }
 
-        if (apply) {
-          svgCanvas.setColor(type, paintColor, true);
-          svgCanvas.setPaintOpacity(type, paintOpacity, true);
+          var type = this.type;
+
+          switch (selectedElement.tagName) {
+            case 'use':
+            case 'image':
+            case 'foreignObject':
+              // These elements don't have fill or stroke, so don't change
+              // the current value
+              return;
+
+            case 'g':
+            case 'a':
+              {
+                var childs = selectedElement.getElementsByTagName('*');
+                var gPaint = null;
+
+                for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
+                  var elem = childs[_i3];
+                  var p = elem.getAttribute(type);
+
+                  if (_i3 === 0) {
+                    gPaint = p;
+                  } else if (gPaint !== p) {
+                    gPaint = null;
+                    break;
+                  }
+                }
+
+                if (gPaint === null) {
+                  // No common color, don't update anything
+                  this._paintColor = null;
+                  return;
+                }
+
+                this._paintColor = gPaint;
+                this._paintOpacity = 1;
+                break;
+              }
+
+            default:
+              {
+                this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+
+                if (isNaN(this._paintOpacity)) {
+                  this._paintOpacity = 1.0;
+                }
+
+                var defColor = type === 'fill' ? 'black' : 'none';
+                this._paintColor = selectedElement.getAttribute(type) || defColor;
+              }
+          }
+
+          if (apply) {
+            svgCanvas.setColor(type, this._paintColor, true);
+            svgCanvas.setPaintOpacity(type, this._paintOpacity, true);
+          }
+
+          this._paintOpacity *= 100;
+          var paint = getPaint(this._paintColor, this._paintOpacity, type); // update the rect inside #fill_color/#stroke_color
+
+          this.setPaint(paint);
         }
+      }, {
+        key: "prep",
+        value: function prep() {
+          var ptype = this.paint.type;
 
-        paintOpacity *= 100;
-        var paint = getPaint(paintColor, paintOpacity, type); // update the rect inside #fill_color/#stroke_color
-
-        this.setPaint(paint);
-      };
-
-      this.prep = function () {
-        var ptype = this.paint.type;
-
-        switch (ptype) {
-          case 'linearGradient':
-          case 'radialGradient':
-            var paint = new $$b.jGraduate.Paint({
-              copy: this.paint
-            });
-            svgCanvas.setPaint(type, paint);
-            break;
+          switch (ptype) {
+            case 'linearGradient':
+            case 'radialGradient':
+              {
+                var paint = new $$b.jGraduate.Paint({
+                  copy: this.paint
+                });
+                svgCanvas.setPaint(this.type, paint);
+                break;
+              }
+          }
         }
-      };
-    };
+      }]);
+
+      return PaintBox;
+    }();
 
     paintBox.fill = new PaintBox('#fill_color', 'fill');
     paintBox.stroke = new PaintBox('#stroke_color', 'stroke');
@@ -32878,29 +34463,61 @@
       $$b(this).removeClass('push_button_pressed').addClass('push_button');
     }); // ask for a layer name
 
-    $$b('#layer_new').click(function () {
-      var uniqName,
-          i = svgCanvas.getCurrentDrawing().getNumLayers();
+    $$b('#layer_new').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee13() {
+      var uniqName, i, newName;
+      return regeneratorRuntime.wrap(function _callee13$(_context13) {
+        while (1) {
+          switch (_context13.prev = _context13.next) {
+            case 0:
+              i = svgCanvas.getCurrentDrawing().getNumLayers();
 
-      do {
-        uniqName = uiStrings$1.layers.layer + ' ' + ++i;
-      } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
+              do {
+                uniqName = uiStrings$1.layers.layer + ' ' + ++i;
+              } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
 
-      $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName, function (newName) {
-        if (!newName) {
-          return;
+              _context13.next = 4;
+              return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName);
+
+            case 4:
+              newName = _context13.sent;
+
+              if (newName) {
+                _context13.next = 7;
+                break;
+              }
+
+              return _context13.abrupt("return");
+
+            case 7:
+              if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                _context13.next = 10;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.dupeLayerName);
+              return _context13.abrupt("return");
+
+            case 10:
+              svgCanvas.createLayer(newName);
+              updateContextPanel();
+              populateLayers();
+
+            case 13:
+            case "end":
+              return _context13.stop();
+          }
         }
-
-        if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.dupeLayerName);
-          return;
-        }
-
-        svgCanvas.createLayer(newName);
-        updateContextPanel();
-        populateLayers();
-      });
-    });
+      }, _callee13, this);
+    })));
+    /**
+     *
+     * @returns {undefined}
+     */
 
     function deleteLayer() {
       if (svgCanvas.deleteCurrentLayer()) {
@@ -32913,23 +34530,67 @@
         $$b('#layerlist tr.layer:first').addClass('layersel');
       }
     }
+    /**
+     *
+     * @returns {undefined}
+     */
+
 
     function cloneLayer() {
-      var name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
-      $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name, function (newName) {
-        if (!newName) {
-          return;
-        }
+      return _cloneLayer.apply(this, arguments);
+    }
+    /**
+     *
+     * @returns {undefined}
+     */
 
-        if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.dupeLayerName);
-          return;
-        }
 
-        svgCanvas.cloneLayer(newName);
-        updateContextPanel();
-        populateLayers();
-      });
+    function _cloneLayer() {
+      _cloneLayer = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee19() {
+        var name, newName;
+        return regeneratorRuntime.wrap(function _callee19$(_context19) {
+          while (1) {
+            switch (_context19.prev = _context19.next) {
+              case 0:
+                name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
+                _context19.next = 3;
+                return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name);
+
+              case 3:
+                newName = _context19.sent;
+
+                if (newName) {
+                  _context19.next = 6;
+                  break;
+                }
+
+                return _context19.abrupt("return");
+
+              case 6:
+                if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                  _context19.next = 9;
+                  break;
+                }
+
+                /* await */
+                $$b.alert(uiStrings$1.notification.dupeLayerName);
+                return _context19.abrupt("return");
+
+              case 9:
+                svgCanvas.cloneLayer(newName);
+                updateContextPanel();
+                populateLayers();
+
+              case 12:
+              case "end":
+                return _context19.stop();
+            }
+          }
+        }, _callee19, this);
+      }));
+      return _cloneLayer.apply(this, arguments);
     }
 
     function mergeLayer() {
@@ -32941,6 +34602,11 @@
       updateContextPanel();
       populateLayers();
     }
+    /**
+     * @param {Integer} pos
+     * @returns {undefined}
+     */
+
 
     function moveLayer(pos) {
       var total = svgCanvas.getCurrentDrawing().getNumLayers();
@@ -32960,23 +34626,52 @@
     $$b('#layer_down').click(function () {
       moveLayer(1);
     });
-    $$b('#layer_rename').click(function () {
-      // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
-      var oldName = $$b('#layerlist tr.layersel td.layername').text();
-      $$b.prompt(uiStrings$1.notification.enterNewLayerName, '', function (newName) {
-        if (!newName) {
-          return;
-        }
+    $$b('#layer_rename').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee14() {
+      var oldName, newName;
+      return regeneratorRuntime.wrap(function _callee14$(_context14) {
+        while (1) {
+          switch (_context14.prev = _context14.next) {
+            case 0:
+              // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
+              oldName = $$b('#layerlist tr.layersel td.layername').text();
+              _context14.next = 3;
+              return $$b.prompt(uiStrings$1.notification.enterNewLayerName, '');
 
-        if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.layerHasThatName);
-          return;
-        }
+            case 3:
+              newName = _context14.sent;
 
-        svgCanvas.renameCurrentLayer(newName);
-        populateLayers();
-      });
-    });
+              if (newName) {
+                _context14.next = 6;
+                break;
+              }
+
+              return _context14.abrupt("return");
+
+            case 6:
+              if (!(oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName))) {
+                _context14.next = 9;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.layerHasThatName);
+              return _context14.abrupt("return");
+
+            case 9:
+              svgCanvas.renameCurrentLayer(newName);
+              populateLayers();
+
+            case 11:
+            case "end":
+              return _context14.stop();
+          }
+        }
+      }, _callee14, this);
+    })));
     var SIDEPANEL_MAXWIDTH = 300;
     var SIDEPANEL_OPENWIDTH = 150;
     var sidedrag = -1,
@@ -32992,10 +34687,15 @@
       var rulerX = $$b('#ruler_x');
       $$b('#sidepanels').width('+=' + delta);
       $$b('#layerpanel').width('+=' + delta);
-      rulerX.css('right', parseInt(rulerX.css('right'), 10) + delta);
-      workarea.css('right', parseInt(workarea.css('right'), 10) + delta);
+      rulerX.css('right', parseInt(rulerX.css('right')) + delta);
+      workarea.css('right', parseInt(workarea.css('right')) + delta);
       svgCanvas.runExtensions('workareaResized');
     };
+    /**
+    * @param {Event} evt
+    * @returns {undefined}
+    */
+
 
     var resizeSidePanel = function resizeSidePanel(evt) {
       if (!allowmove) {
@@ -33068,6 +34768,9 @@
     };
 
     $$b(window).bind('load resize', centerCanvas);
+    /**
+     * @implements {module:jQuerySpinButton.StepCallback}
+     */
 
     function stepFontSize(elem, step) {
       var origVal = Number(elem.value);
@@ -33096,6 +34799,10 @@
 
       return sugVal;
     }
+    /**
+     * @implements {module:jQuerySpinButton.StepCallback}
+     */
+
 
     function stepZoom(elem, step) {
       var origVal = Number(elem.value);
@@ -33658,9 +35365,9 @@
                 keyval = opts.key;
               }
 
-              keyval += '';
+              keyval = String(keyval);
               var fn = opts.fn;
-              $$b.each(keyval.split('/'), function (i, key) {
+              $$b.each(keyval.split('/'), function (j, key) {
                 $$b(document).bind('keydown', key, function (e) {
                   fn();
 
@@ -33682,6 +35389,8 @@
                 }
               }
             }
+
+            return true;
           }); // Setup flyouts
 
           setupFlyouts(flyouts); // Misc additional actions
@@ -33781,7 +35490,7 @@
         toggleSidePanel();
       }
 
-      $$b('#rulers').toggle(!!curConfig.showRulers);
+      $$b('#rulers').toggle(Boolean(curConfig.showRulers));
 
       if (curConfig.showRulers) {
         $$b('#show_rulers')[0].checked = true;
@@ -33911,10 +35620,18 @@
           break;
       }
     });
+    /**
+    * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}
+    * @param {"dupe"|"delete"|"merge_down"|"merge_all"} action
+    * @param {external:jQuery} el
+    * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos
+    * @returns {undefined}
+    */
 
     var lmenuFunc = function lmenuFunc(action, el, pos) {
       switch (action) {
         case 'dupe':
+          /* await */
           cloneLayer();
           break;
 
@@ -33948,6 +35665,9 @@
     });
     $$b('#cmenu_canvas li').disableContextMenu();
     canvMenu.enableContextMenuItems('#delete,#cut,#copy');
+    /**
+     * @returns {undefined}
+     */
 
     function enableOrDisableClipboard() {
       var svgeditClipboard;
@@ -33980,6 +35700,8 @@
 
         return uiStrings$1.notification.unsavedChanges;
       }
+
+      return true;
     });
     /**
     * Expose the `uiStrings`.
@@ -33991,36 +35713,48 @@
       return uiStrings$1;
     };
     /**
-    * @callback module:SVGEditor.OpenPrepCallback
-    * @param {boolean} noChanges
-    * @returns {undefined}
-    */
-
-    /**
-    * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback
-    * @returns {undefined}
+    * @returns {Promise} Resolves to boolean indicating `true` if there were no changes
+    *  and `false` after the user confirms.
     */
 
 
-    editor.openPrep = function (func) {
+    editor.openPrep = function () {
       $$b('#main_menu').hide();
 
       if (undoMgr.getUndoStackSize() === 0) {
-        func(true);
-      } else {
-        $$b.confirm(uiStrings$1.notification.QwantToOpen, func);
+        return true;
       }
+
+      return $$b.confirm(uiStrings$1.notification.QwantToOpen);
     };
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragEnter(e) {
       e.stopPropagation();
       e.preventDefault(); // and indicator should be displayed here, such as "drop files here"
     }
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragOver(e) {
       e.stopPropagation();
       e.preventDefault();
     }
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragLeave(e) {
       e.stopPropagation();
@@ -34032,6 +35766,10 @@
 
 
     if (window.FileReader) {
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
       var importImage = function importImage(e) {
         $$b.process_cancel(uiStrings$1.notification.loadingImage);
         e.stopPropagation();
@@ -34049,72 +35787,79 @@
         else */
 
 
-        if (file.type.includes('image')) {
-          // Detected an image
-          // svg handling
-          var reader;
+        if (!file.type.includes('image')) {
+          return;
+        } // Detected an image
+        // svg handling
 
-          if (file.type.includes('svg')) {
-            reader = new FileReader();
 
-            reader.onloadend = function (e) {
-              var newElement = svgCanvas.importSvgString(e.target.result, true);
-              svgCanvas.ungroupSelectedElement();
-              svgCanvas.ungroupSelectedElement();
-              svgCanvas.groupSelectedElements();
+        var reader;
+
+        if (file.type.includes('svg')) {
+          reader = new FileReader();
+
+          reader.onloadend = function (ev) {
+            var newElement = svgCanvas.importSvgString(ev.target.result, true);
+            svgCanvas.ungroupSelectedElement();
+            svgCanvas.ungroupSelectedElement();
+            svgCanvas.groupSelectedElements();
+            svgCanvas.alignSelectedElements('m', 'page');
+            svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
+
+            svgCanvas.selectOnly([newElement]);
+            $$b('#dialog_box').hide();
+          };
+
+          reader.readAsText(file);
+        } else {
+          // bitmap handling
+          reader = new FileReader();
+
+          reader.onloadend = function (_ref27) {
+            var result = _ref27.target.result;
+
+            /**
+            * Insert the new image until we know its dimensions
+            * @param {Float} width
+            * @param {Float} height
+            * @returns {undefined}
+            */
+            var insertNewImage = function insertNewImage(width, height) {
+              var newImage = svgCanvas.addSVGElementFromJson({
+                element: 'image',
+                attr: {
+                  x: 0,
+                  y: 0,
+                  width: width,
+                  height: height,
+                  id: svgCanvas.getNextId(),
+                  style: 'pointer-events:inherit'
+                }
+              });
+              svgCanvas.setHref(newImage, result);
+              svgCanvas.selectOnly([newImage]);
               svgCanvas.alignSelectedElements('m', 'page');
-              svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
-
-              svgCanvas.selectOnly([newElement]);
+              svgCanvas.alignSelectedElements('c', 'page');
+              updateContextPanel();
               $$b('#dialog_box').hide();
+            }; // create dummy img so we know the default dimensions
+
+
+            var imgWidth = 100;
+            var imgHeight = 100;
+            var img = new Image();
+            img.style.opacity = 0;
+
+            img.onload = function () {
+              imgWidth = img.offsetWidth || img.naturalWidth || img.width;
+              imgHeight = img.offsetHeight || img.naturalHeight || img.height;
+              insertNewImage(imgWidth, imgHeight);
             };
 
-            reader.readAsText(file);
-          } else {
-            // bitmap handling
-            reader = new FileReader();
+            img.src = result;
+          };
 
-            reader.onloadend = function (_ref21) {
-              var result = _ref21.target.result;
-
-              // let's insert the new image until we know its dimensions
-              var insertNewImage = function insertNewImage(width, height) {
-                var newImage = svgCanvas.addSVGElementFromJson({
-                  element: 'image',
-                  attr: {
-                    x: 0,
-                    y: 0,
-                    width: width,
-                    height: height,
-                    id: svgCanvas.getNextId(),
-                    style: 'pointer-events:inherit'
-                  }
-                });
-                svgCanvas.setHref(newImage, result);
-                svgCanvas.selectOnly([newImage]);
-                svgCanvas.alignSelectedElements('m', 'page');
-                svgCanvas.alignSelectedElements('c', 'page');
-                updateContextPanel();
-                $$b('#dialog_box').hide();
-              }; // create dummy img so we know the default dimensions
-
-
-              var imgWidth = 100;
-              var imgHeight = 100;
-              var img = new Image();
-              img.style.opacity = 0;
-
-              img.onload = function () {
-                imgWidth = img.offsetWidth || img.naturalWidth || img.width;
-                imgHeight = img.offsetHeight || img.naturalHeight || img.height;
-                insertNewImage(imgWidth, imgHeight);
-              };
-
-              img.src = result;
-            };
-
-            reader.readAsDataURL(file);
-          }
+          reader.readAsDataURL(file);
         }
       };
 
@@ -34122,28 +35867,75 @@
       workarea[0].addEventListener('dragover', onDragOver);
       workarea[0].addEventListener('dragleave', onDragLeave);
       workarea[0].addEventListener('drop', importImage);
-      var open = $$b('<input type="file">').click(function () {
-        var f = this;
-        editor.openPrep(function (ok) {
-          if (!ok) {
-            return;
+      var open = $$b('<input type="file">').click(
+      /*#__PURE__*/
+      _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee16() {
+        var ok, reader;
+        return regeneratorRuntime.wrap(function _callee16$(_context16) {
+          while (1) {
+            switch (_context16.prev = _context16.next) {
+              case 0:
+                _context16.next = 2;
+                return editor.openPrep();
+
+              case 2:
+                ok = _context16.sent;
+
+                if (ok) {
+                  _context16.next = 5;
+                  break;
+                }
+
+                return _context16.abrupt("return");
+
+              case 5:
+                svgCanvas.clear();
+
+                if (this.files.length === 1) {
+                  $$b.process_cancel(uiStrings$1.notification.loadingImage);
+                  reader = new FileReader();
+
+                  reader.onloadend =
+                  /*#__PURE__*/
+                  function () {
+                    var _ref29 = _asyncToGenerator(
+                    /*#__PURE__*/
+                    regeneratorRuntime.mark(function _callee15(e) {
+                      return regeneratorRuntime.wrap(function _callee15$(_context15) {
+                        while (1) {
+                          switch (_context15.prev = _context15.next) {
+                            case 0:
+                              _context15.next = 2;
+                              return loadSvgString(e.target.result);
+
+                            case 2:
+                              updateCanvas();
+
+                            case 3:
+                            case "end":
+                              return _context15.stop();
+                          }
+                        }
+                      }, _callee15, this);
+                    }));
+
+                    return function (_x6) {
+                      return _ref29.apply(this, arguments);
+                    };
+                  }();
+
+                  reader.readAsText(this.files[0]);
+                }
+
+              case 7:
+              case "end":
+                return _context16.stop();
+            }
           }
-
-          svgCanvas.clear();
-
-          if (f.files.length === 1) {
-            $$b.process_cancel(uiStrings$1.notification.loadingImage);
-            var reader = new FileReader();
-
-            reader.onloadend = function (e) {
-              loadSvgString(e.target.result);
-              updateCanvas();
-            };
-
-            reader.readAsText(f.files[0]);
-          }
-        });
-      });
+        }, _callee16, this);
+      })));
       $$b('#tool_open').show().prepend(open);
       var imgImport = $$b('<input type="file">').change(importImage);
       $$b('#tool_import').show().prepend(imgImport);
@@ -34166,24 +35958,26 @@
     var setLang = editor.setLang =
     /*#__PURE__*/
     function () {
-      var _ref22 = _asyncToGenerator(
+      var _ref30 = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee8(lang, allStrings) {
-        var oldLayerName, renameLayer, ext, elems;
-        return regeneratorRuntime.wrap(function _callee8$(_context8) {
+      regeneratorRuntime.mark(function _callee17(lang, allStrings) {
+        var _this = this;
+
+        var oldLayerName, renameLayer, elems;
+        return regeneratorRuntime.wrap(function _callee17$(_context17) {
           while (1) {
-            switch (_context8.prev = _context8.next) {
+            switch (_context17.prev = _context17.next) {
               case 0:
                 editor.langChanged = true;
                 $$b.pref('lang', lang);
                 $$b('#lang_select').val(lang);
 
                 if (allStrings) {
-                  _context8.next = 5;
+                  _context17.next = 5;
                   break;
                 }
 
-                return _context8.abrupt("return");
+                return _context17.abrupt("return");
 
               case 5:
                 $$b.extend(uiStrings$1, allStrings); // const notif = allStrings.notification; // Currently unused
@@ -34201,39 +35995,31 @@
 
 
                 if (!extsPreLang.length) {
-                  _context8.next = 21;
+                  _context17.next = 17;
                   break;
                 }
 
-              case 12:
-                if (!extsPreLang.length) {
-                  _context8.next = 19;
-                  break;
-                }
+                _context17.next = 14;
+                return Promise.all(extsPreLang.map(function (ext) {
+                  loadedExtensionNames.push(ext.name);
+                  return ext.langReady({
+                    lang: lang,
+                    uiStrings: uiStrings$1,
+                    importLocale: getImportLocale({
+                      defaultLang: lang,
+                      defaultName: ext.name
+                    })
+                  });
+                }));
 
-                ext = extsPreLang.shift();
-                loadedExtensionNames.push(ext.name);
-                _context8.next = 17;
-                return ext.langReady({
-                  lang: lang,
-                  uiStrings: uiStrings$1,
-                  importLocale: getImportLocale({
-                    defaultLang: lang,
-                    defaultName: ext.name
-                  })
-                });
+              case 14:
+                extsPreLang.length = 0;
+                _context17.next = 18;
+                break;
 
               case 17:
-                _context8.next = 12;
-                break;
-
-              case 19:
-                _context8.next = 22;
-                break;
-
-              case 21:
                 loadedExtensionNames.forEach(function (loadedExtensionName) {
-                  svgCanvas.runExtensions('langReady',
+                  _this.runExtension(loadedExtensionName, 'langReady',
                   /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */
                   {
                     lang: lang,
@@ -34245,7 +36031,7 @@
                   });
                 });
 
-              case 22:
+              case 18:
                 svgCanvas.runExtensions('langChanged',
                 /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */
                 lang); // Update flyout tooltips
@@ -34266,16 +36052,16 @@
                   $$b('#tool_pos' + this.id.substr(10))[0].title = this.title;
                 });
 
-              case 27:
+              case 23:
               case "end":
-                return _context8.stop();
+                return _context17.stop();
             }
           }
-        }, _callee8, this);
+        }, _callee17, this);
       }));
 
-      return function (_x6, _x7) {
-        return _ref22.apply(this, arguments);
+      return function (_x7, _x8) {
+        return _ref30.apply(this, arguments);
       };
     }();
 
@@ -34325,47 +36111,134 @@
   };
   /**
   * @callback module:SVGEditor.ReadyCallback
-  * @returns {undefined}
+  * @returns {Promise|undefined}
   */
 
   /**
   * Queues a callback to be invoked when the editor is ready (or
   *   to be invoked immediately if it is already ready--i.e.,
-  *   if `svgEditor.runCallbacks` has been run).
+  *   if `runCallbacks` has been run).
   * @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke
-  * @returns {undefined}
+  * @returns {Promise} Resolves when all callbacks, including the supplied have resolved
   */
 
 
   editor.ready = function (cb) {
-    if (!isReady) {
-      callbacks.push(cb);
-    } else {
-      cb();
-    }
+    // eslint-disable-line promise/prefer-await-to-callbacks
+    return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
+      if (isReady) {
+        resolve(cb()); // eslint-disable-line callback-return, promise/prefer-await-to-callbacks
+
+        return;
+      }
+
+      callbacks.push([cb, resolve, reject]);
+    });
   };
   /**
   * Invokes the callbacks previous set by `svgEditor.ready`
-  * @returns {undefined}
+  * @returns {Promise} Resolves to `undefined` if all callbacks succeeded and rejects otherwise
   */
 
 
-  editor.runCallbacks = function () {
-    callbacks.forEach(function (cb) {
-      cb();
-    });
-    isReady = true;
-  };
+  editor.runCallbacks =
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee20() {
+    return regeneratorRuntime.wrap(function _callee20$(_context20) {
+      while (1) {
+        switch (_context20.prev = _context20.next) {
+          case 0:
+            _context20.prev = 0;
+            _context20.next = 3;
+            return Promise.all(callbacks.map(function (_ref33) {
+              var _ref34 = _slicedToArray(_ref33, 1),
+                  cb = _ref34[0];
+
+              return cb(); // eslint-disable-line promise/prefer-await-to-callbacks
+            }));
+
+          case 3:
+            _context20.next = 9;
+            break;
+
+          case 5:
+            _context20.prev = 5;
+            _context20.t0 = _context20["catch"](0);
+            callbacks.forEach(function (_ref35) {
+              var _ref36 = _slicedToArray(_ref35, 3),
+                  reject = _ref36[2];
+
+              reject();
+            });
+            throw _context20.t0;
+
+          case 9:
+            callbacks.forEach(function (_ref37) {
+              var _ref38 = _slicedToArray(_ref37, 2),
+                  resolve = _ref38[1];
+
+              resolve();
+            });
+            isReady = true;
+
+          case 11:
+          case "end":
+            return _context20.stop();
+        }
+      }
+    }, _callee20, this, [[0, 5]]);
+  }));
   /**
   * @param {string} str The SVG string to load
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}]
+  * @param {boolean} [opts.noAlert=false] Option to avoid alert to user and instead get rejected promise
+  * @returns {Promise}
   */
 
-
   editor.loadFromString = function (str) {
-    editor.ready(function () {
-      loadSvgString(str);
-    });
+    var _ref39 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        noAlert = _ref39.noAlert;
+
+    editor.ready(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee21() {
+      return regeneratorRuntime.wrap(function _callee21$(_context21) {
+        while (1) {
+          switch (_context21.prev = _context21.next) {
+            case 0:
+              _context21.prev = 0;
+              _context21.next = 3;
+              return loadSvgString(str, {
+                noAlert: noAlert
+              });
+
+            case 3:
+              _context21.next = 9;
+              break;
+
+            case 5:
+              _context21.prev = 5;
+              _context21.t0 = _context21["catch"](0);
+
+              if (!noAlert) {
+                _context21.next = 9;
+                break;
+              }
+
+              throw _context21.t0;
+
+            case 9:
+            case "end":
+              return _context21.stop();
+          }
+        }
+      }, _callee21, this, [[0, 5]]);
+    })));
   };
   /**
   * Not presently in use.
@@ -34387,52 +36260,70 @@
 
   /**
   * @param {string} url URL from which to load an SVG string via Ajax
-  * @param {PlainObject} [opts] May contain properties: `cache`, `callback`
-  * @param {boolean} opts.cache
-  * @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}] May contain properties: `cache`, `callback`
+  * @param {boolean} [opts.cache]
+  * @param {boolean} [opts.noAlert]
+  * @returns {Promise} Resolves to `undefined` or rejects upon bad loading of
+  *   the SVG (or upon failure to parse the loaded string) when `noAlert` is
+  *   enabled
   */
 
 
-  editor.loadFromURL = function (url, opts) {
-    if (!opts) {
-      opts = {};
-    }
+  editor.loadFromURL = function (url) {
+    var _ref41 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        cache = _ref41.cache,
+        noAlert = _ref41.noAlert;
 
-    var _opts = opts,
-        cache = _opts.cache,
-        cb = _opts.callback;
-    editor.ready(function () {
-      $$b.ajax({
-        url: url,
-        dataType: 'text',
-        cache: !!cache,
-        beforeSend: function beforeSend() {
-          $$b.process_cancel(uiStrings$1.notification.loadingImage);
-        },
-        success: function success(str) {
-          loadSvgString(str, cb);
-        },
-        error: function error(xhr, stat, err) {
-          if (xhr.status !== 404 && xhr.responseText) {
-            loadSvgString(xhr.responseText, cb);
-          } else {
-            $$b.alert(uiStrings$1.notification.URLloadFail + ': \n' + err, cb);
+    return editor.ready(function () {
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        $$b.ajax({
+          url: url,
+          dataType: 'text',
+          cache: Boolean(cache),
+          beforeSend: function beforeSend() {
+            $$b.process_cancel(uiStrings$1.notification.loadingImage);
+          },
+          success: function success(str) {
+            resolve(loadSvgString(str, {
+              noAlert: noAlert
+            }));
+          },
+          error: function error(xhr, stat, err) {
+            if (xhr.status !== 404 && xhr.responseText) {
+              resolve(loadSvgString(xhr.responseText, {
+                noAlert: noAlert
+              }));
+              return;
+            }
+
+            if (noAlert) {
+              reject(new Error('URLLoadFail'));
+              return;
+            }
+
+            $$b.alert(uiStrings$1.notification.URLLoadFail + ': \n' + err);
+            resolve();
+          },
+          complete: function complete() {
+            $$b('#dialog_box').hide();
           }
-        },
-        complete: function complete() {
-          $$b('#dialog_box').hide();
-        }
+        });
       });
     });
   };
   /**
   * @param {string} str The Data URI to base64-decode (if relevant) and load
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}]
+  * @param {boolean} [opts.noAlert]
+  * @returns {Promise} Resolves to `undefined` and rejects if loading SVG string fails and `noAlert` is enabled
   */
 
 
   editor.loadFromDataURI = function (str) {
+    var _ref42 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        noAlert = _ref42.noAlert;
+
     editor.ready(function () {
       var base64 = false;
       var pre = str.match(/^data:image\/svg\+xml;base64,/);
@@ -34448,7 +36339,9 @@
       }
 
       var src = str.slice(pre.length);
-      loadSvgString(base64 ? decode64(src) : decodeURIComponent(src));
+      return loadSvgString(base64 ? decode64(src) : decodeURIComponent(src), {
+        noAlert: noAlert
+      });
     });
   };
   /**
@@ -34479,15 +36372,17 @@
   var extensionsAdded = false;
   var messageQueue = [];
   /**
-   * @param {Any} data
-   * @param {string} origin
+   * @param {PlainObject} info
+   * @param {Any} info.data
+   * @param {string} info.origin
    * @fires module:svgcanvas.SvgCanvas#event:message
    * @returns {undefined}
    */
 
-  var messageListener = function messageListener(_ref23) {
-    var data = _ref23.data,
-        origin = _ref23.origin;
+  var messageListener = function messageListener(_ref43) {
+    var data = _ref43.data,
+        origin = _ref43.origin;
+    // eslint-disable-line no-shadow
     // console.log('data, origin, extensionsAdded', data, origin, extensionsAdded);
     var messageObj = {
       data: data,
@@ -34506,10 +36401,34 @@
   window.addEventListener('message', messageListener); // Run init once DOM is loaded
   // jQuery(editor.init);
 
-  Promise.resolve().then(function () {
-    // We wait a micro-task to let the svgEditor variable be defined for module checks
-    editor.init();
-  });
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee22() {
+    return regeneratorRuntime.wrap(function _callee22$(_context22) {
+      while (1) {
+        switch (_context22.prev = _context22.next) {
+          case 0:
+            _context22.prev = 0;
+            _context22.next = 3;
+            return Promise.resolve();
+
+          case 3:
+            editor.init();
+            _context22.next = 9;
+            break;
+
+          case 6:
+            _context22.prev = 6;
+            _context22.t0 = _context22["catch"](0);
+            console.error(_context22.t0); // eslint-disable-line no-console
+
+          case 9:
+          case "end":
+            return _context22.stop();
+        }
+      }
+    }, _callee22, this, [[0, 6]]);
+  }))();
 
   return editor;
 
diff --git a/dist/index-umd.min.js b/dist/index-umd.min.js
index efec0d6f..d3db6e23 100644
--- a/dist/index-umd.min.js
+++ b/dist/index-umd.min.js
@@ -1,2 +1,2 @@
-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.svgEditor=t()}(this,function(){"use strict";function e(t){return(e="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(t)}function t(e,t,n,r,a,i,o){try{var s=e[i](o),l=s.value}catch(e){return void n(e)}s.done?t(l):Promise.resolve(l).then(r,a)}function n(e){return function(){var n=this,r=arguments;return new Promise(function(a,i){var o=e.apply(n,r);function s(e){t(o,a,i,s,l,"next",e)}function l(e){t(o,a,i,s,l,"throw",e)}s(void 0)})}}function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function a(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}function i(e,t,n){return t&&a(e.prototype,t),n&&a(e,n),e}function o(){return(o=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var r in n)Object.prototype.hasOwnProperty.call(n,r)&&(e[r]=n[r])}return e}).apply(this,arguments)}function s(e,t){if("function"!=typeof t&&null!==t)throw new TypeError("Super expression must either be null or a function");e.prototype=Object.create(t&&t.prototype,{constructor:{value:e,writable:!0,configurable:!0}}),t&&c(e,t)}function l(e){return(l=Object.setPrototypeOf?Object.getPrototypeOf:function(e){return e.__proto__||Object.getPrototypeOf(e)})(e)}function c(e,t){return(c=Object.setPrototypeOf||function(e,t){return e.__proto__=t,e})(e,t)}function u(e,t){return!t||"object"!=typeof t&&"function"!=typeof t?function(e){if(void 0===e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return e}(e):t}function d(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,a=!1,i=void 0;try{for(var o,s=e[Symbol.iterator]();!(r=(o=s.next()).done)&&(n.push(o.value),!t||n.length!==t);r=!0);}catch(e){a=!0,i=e}finally{try{r||null==s.return||s.return()}finally{if(a)throw i}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function h(e){return function(e){if(Array.isArray(e)){for(var t=0,n=new Array(e.length);t<e.length;t++)n[t]=e[t];return n}}(e)||function(e){if(Symbol.iterator in Object(e)||"[object Arguments]"===Object.prototype.toString.call(e))return Array.from(e)}(e)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance")}()}function f(e){var t=e.changedTouches,n=t[0],r="";switch(e.type){case"touchstart":r="mousedown";break;case"touchmove":r="mousemove";break;case"touchend":r="mouseup";break;default:return}var a=n.screenX,i=n.screenY,o=n.clientX,s=n.clientY,l=new MouseEvent(r,{bubbles:!0,cancelable:!0,view:window,detail:1,screenX:a,screenY:i,clientX:o,clientY:s,ctrlKey:!1,altKey:!1,shiftKey:!1,metaKey:!1,button:0,relatedTarget:null});t.length<2&&(n.target.dispatchEvent(l),e.preventDefault())}document.addEventListener("touchstart",f,!0),document.addEventListener("touchmove",f,!0),document.addEventListener("touchend",f,!0),document.addEventListener("touchcancel",f,!0);var p={HTML:"http://www.w3.org/1999/xhtml",MATH:"http://www.w3.org/1998/Math/MathML",SE:"http://svg-edit.googlecode.com",SVG:"http://www.w3.org/2000/svg",XLINK:"http://www.w3.org/1999/xlink",XML:"http://www.w3.org/XML/1998/namespace",XMLNS:"http://www.w3.org/2000/xmlns/"},g=function(){var e={};return Object.entries(p).forEach(function(t){var n=d(t,2),r=n[0],a=n[1];e[a]=r.toLowerCase()}),e};!function(){if(!("SVGPathSeg"in window)){var e=function(){function e(t,n,a){r(this,e),this.pathSegType=t,this.pathSegTypeAsLetter=n,this._owningPathSegList=a}return 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t=!1;e.forEach(function(e){"d"===e.attributeName&&(t=!0)}),t&&(this._list=this._parsePath(this._pathElement.getAttribute("d")))}}},{key:"_writeListToPath",value:function(){this._pathElementMutationObserver.disconnect(),this._pathElement.setAttribute("d",e._pathSegArrayAsString(this._list)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)}},{key:"segmentChanged",value:function(e){this._writeListToPath()}},{key:"clear",value:function(){this._checkPathSynchronizedToList(),this._list.forEach(function(e){e._owningPathSegList=null}),this._list=[],this._writeListToPath()}},{key:"initialize",value:function(e){return this._checkPathSynchronizedToList(),this._list=[e],e._owningPathSegList=this,this._writeListToPath(),e}},{key:"_checkValidIndex",value:function(e){if(isNaN(e)||e<0||e>=this.numberOfItems)throw new Error("INDEX_SIZE_ERR")}},{key:"getItem",value:function(e){return this._checkPathSynchronizedToList(),this._checkValidIndex(e),this._list[e]}},{key:"insertItemBefore",value:function(e,t){return this._checkPathSynchronizedToList(),t>this.numberOfItems&&(t=this.numberOfItems),e._owningPathSegList&&(e=e.clone()),this._list.splice(t,0,e),e._owningPathSegList=this,this._writeListToPath(),e}},{key:"replaceItem",value:function(e,t){return this._checkPathSynchronizedToList(),e._owningPathSegList&&(e=e.clone()),this._checkValidIndex(t),this._list[t]=e,e._owningPathSegList=this,this._writeListToPath(),e}},{key:"removeItem",value:function(e){this._checkPathSynchronizedToList(),this._checkValidIndex(e);var t=this._list[e];return this._list.splice(e,1),this._writeListToPath(),t}},{key:"appendItem",value:function(e){return this._checkPathSynchronizedToList(),e._owningPathSegList&&(e=e.clone()),this._list.push(e),e._owningPathSegList=this,this._writeListToPath(),e}},{key:"_parsePath",value:function(e){if(!e||!e.length)return[];var t=this,n=function(){function e(){r(this,e),this.pathSegList=[]}return i(e,[{key:"appendSegment",value:function(e){this.pathSegList.push(e)}}]),e}(),a=function(){function e(t){r(this,e),this._string=t,this._currentIndex=0,this._endIndex=this._string.length,this._previousCommand=SVGPathSeg.PATHSEG_UNKNOWN,this._skipOptionalSpaces()}return i(e,[{key:"_isCurrentSpace",value:function(){var e=this._string[this._currentIndex];return e<=" "&&(" "===e||"\n"===e||"\t"===e||"\r"===e||"\f"===e)}},{key:"_skipOptionalSpaces",value:function(){for(;this._currentIndex<this._endIndex&&this._isCurrentSpace();)this._currentIndex++;return 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s(t,ue),i(t,[{key:"type",value:function(){return"svgedit.history.ChangeElementCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(ce.BEFORE_APPLY,this);var t=!1;for(var n in this.newValues)this.newValues[n]?"#text"===n?this.elem.textContent=this.newValues[n]:"#href"===n?Ot(this.elem,this.newValues[n]):this.elem.setAttribute(n,this.newValues[n]):"#text"===n?this.elem.textContent="":(this.elem.setAttribute(n,""),this.elem.removeAttribute(n)),"transform"===n&&(t=!0);if(!t){var r=Kt(this.elem);if(r){var a=this.elem.getBBox(),i=["rotate(",r," ",a.x+a.width/2,",",a.y+a.height/2,")"].join("");i!==this.elem.getAttribute("transform")&&this.elem.setAttribute("transform",i)}}return e&&e.handleHistoryEvent(ce.AFTER_APPLY,this),!0}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(ce.BEFORE_UNAPPLY,this);var t=!1;for(var n in this.oldValues)this.oldValues[n]?"#text"===n?this.elem.textContent=this.oldValues[n]:"#href"===n?Ot(this.elem,this.oldValues[n]):this.elem.setAttribute(n,this.oldValues[n]):"#text"===n?this.elem.textContent="":this.elem.removeAttribute(n),"transform"===n&&(t=!0);if(!t){var r=Kt(this.elem);if(r){var a=this.elem.getBBox(),i=["rotate(",r," ",a.x+a.width/2,",",a.y+a.height/2,")"].join("");i!==this.elem.getAttribute("transform")&&this.elem.setAttribute("transform",i)}}return Z(this.elem),e&&e.handleHistoryEvent(ce.AFTER_UNAPPLY,this),!0}},{key:"elements",value:function(){return[this.elem]}}]),t}();pe.type=pe.prototype.type;var ge=function(e){function t(e){var n;return r(this,t),(n=u(this,l(t).call(this))).text=e||"Batch Command",n.stack=[],n}return s(t,ue),i(t,[{key:"type",value:function(){return"svgedit.history.BatchCommand"}},{key:"apply",value:function(e){e&&e.handleHistoryEvent(ce.BEFORE_APPLY,this);for(var t=this.stack.length,n=0;n<t;++n)this.stack[n].apply(e);e&&e.handleHistoryEvent(ce.AFTER_APPLY,this)}},{key:"unapply",value:function(e){e&&e.handleHistoryEvent(ce.BEFORE_UNAPPLY,this);for(var t=this.stack.length-1;t>=0;t--)this.stack[t].unapply(e);e&&e.handleHistoryEvent(ce.AFTER_UNAPPLY,this)}},{key:"elements",value:function(){for(var e=[],t=this.stack.length;t--;)for(var n=this.stack[t].elements(),r=n.length;r--;)e.includes(n[r])||e.push(n[r]);return e}},{key:"addSubCommand",value:function(e){this.stack.push(e)}},{key:"isEmpty",value:function(){return!this.stack.length}}]),t}();ge.type=ge.prototype.type;var me,ve,_e,ye,be,xe=function(){function e(t){r(this,e),this.handler_=t||null,this.undoStackPointer=0,this.undoStack=[],this.undoChangeStackPointer=-1,this.undoableChangeStack=[]}return i(e,[{key:"resetUndoStack",value:function(){this.undoStack=[],this.undoStackPointer=0}},{key:"getUndoStackSize",value:function(){return 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n=++this.undoChangeStackPointer,r=t.length,a=new Array(r),i=new Array(r);r--;){var o=t[r];null!=o&&(i[r]=o,a[r]=o.getAttribute(e))}this.undoableChangeStack[n]={attrName:e,oldValues:a,elements:i}}},{key:"finishUndoableChange",value:function(){for(var e=this.undoChangeStackPointer--,t=this.undoableChangeStack[e],n=t.attrName,r=new ge("Change "+n),a=t.elements.length;a--;){var i=t.elements[a];if(null!=i){var o={};o[n]=t.oldValues[a],o[n]!==i.getAttribute(n)&&r.addSubCommand(new pe(i,o,n))}}return this.undoableChangeStack[e]=null,r}}]),e}(),we=Object.freeze({HistoryEventTypes:ce,MoveElementCommand:de,InsertElementCommand:he,RemoveElementCommand:fe,ChangeElementCommand:pe,BatchCommand:ge,UndoManager:xe}),Se=document.createElementNS(p.SVG,"svg"),ke=function(e,t,n){return{x:n.a*e+n.c*t+n.e,y:n.b*e+n.d*t+n.f}},Ce=function(e){return 1===e.a&&0===e.b&&0===e.c&&1===e.d&&0===e.e&&0===e.f},Ae=function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];var r=t.reduceRight(function(e,t){return t.multiply(e)});return Math.abs(r.a)<1e-14&&(r.a=0),Math.abs(r.b)<1e-14&&(r.b=0),Math.abs(r.c)<1e-14&&(r.c=0),Math.abs(r.d)<1e-14&&(r.d=0),Math.abs(r.e)<1e-14&&(r.e=0),Math.abs(r.f)<1e-14&&(r.f=0),r},Ee=function(e){if(!e)return!1;for(var t=e.numberOfItems;t--;){var n=e.getItem(t);if(1===n.type&&!Ce(n.matrix))return!0}return!1},Ge=function(e,t,n,r,a){var i=ke(e,t,a),o=ke(e+n,t,a),s=ke(e,t+r,a),l=ke(e+n,t+r,a),c=Math.min(i.x,o.x,s.x,l.x),u=Math.max(i.x,o.x,s.x,l.x),d=Math.min(i.y,o.y,s.y,l.y);return{tl:i,tr:o,bl:s,br:l,aabox:{x:c,y:d,width:u-c,height:Math.max(i.y,o.y,s.y,l.y)-d}}},Pe=function(e,t,n){if(null==e)return Se.createSVGTransformFromMatrix(Se.createSVGMatrix());if(t=t||0,n=n||e.numberOfItems-1,(t=parseInt(t,10))>(n=parseInt(n,10))){var r=n;n=t,t=r}for(var a=Se.createSVGMatrix(),i=t;i<=n;++i){var o=i>=0&&i<e.numberOfItems?e.getItem(i).matrix:Se.createSVGMatrix();a=Ae(a,o)}return Se.createSVGTransformFromMatrix(a)},Ie=function(e){var 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n=this.item,r=this.ctrlpts?[n.x+=e,n.y+=t,n.x1,n.y1,n.x2+=e,n.y2+=t]:[n.x+=e,n.y+=t];if(Ze(this.type,this.index,r),this.next&&this.next.ctrlpts){var a=this.next.item,i=[a.x,a.y,a.x1+=e,a.y1+=t,a.x2,a.y2];Ze(this.next.type,this.next.index,i)}if(this.mate){var o=this.mate.item,s=[o.x+=e,o.y+=t];Ze(this.mate.type,this.mate.index,s)}this.update(!0),this.next&&this.next.update(!0)}},{key:"setLinked",value:function(e){var t,n,r;if(2===e){if(n=1,!(t=this.next))return;r=this.item}else{if(n=2,!(t=this.prev))return;r=t.item}var a=t.item;a["x"+n]=r.x+(r.x-this.item["x"+e]),a["y"+n]=r.y+(r.y-this.item["y"+e]);var i=[a.x,a.y,a.x1,a.y1,a.x2,a.y2];Ze(t.type,t.index,i),t.update(!0)}},{key:"moveCtrl",value:function(e,t,n){var r=this.item;r["x"+e]+=t,r["y"+e]+=n;var 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m=[t.item.x,t.item.y,u,g,l,f];Ze(t.type,e,m)}He(this.elem,n,e)}}},{key:"deleteSeg",value:function(e){var t=this.segs[e],n=this.elem.pathSegList;t.show(!1);var r=t.next;if(t.mate){var a=[r.item.x,r.item.y];Ze(2,r.index,a),Ze(4,t.index,a),n.removeItem(t.mate.index)}else if(t.prev)n.removeItem(e);else{var i=[r.item.x,r.item.y];Ze(2,t.next.index,i),n.removeItem(e)}}},{key:"subpathIsClosed",value:function(e){var t=!1;return De.eachSeg(function(n){return n<=e||2!==this.type&&(1===this.type?(t=!0,!1):void 0)}),t}},{key:"removePtFromSelection",value:function(e){var t=this.selected_pts.indexOf(e);-1!==t&&(this.segs[e].select(!1),this.selected_pts.splice(t,1))}},{key:"clearSelection",value:function(){this.eachSeg(function(){this.select(!1)}),this.selected_pts=[]}},{key:"storeD",value:function(){this.last_d=this.elem.getAttribute("d")}},{key:"show",value:function(e){return this.eachSeg(function(){this.show(e)}),e&&this.selectPt(this.first_seg.index),this}},{key:"movePts",value:function(e,t){for(var n=this.selected_pts.length;n--;){this.segs[this.selected_pts[n]].move(e,t)}}},{key:"moveCtrl",value:function(e,t){var n=this.segs[this.selected_pts[0]];n.moveCtrl(this.dragctrl,e,t),Re&&n.setLinked(this.dragctrl)}},{key:"setSegType",value:function(e){this.storeD();for(var t,n=this.selected_pts.length;n--;){var r=this.selected_pts[n],a=this.segs[r],i=a.prev;if(i){if(!e)t="Toggle Path Segment Type",e=6===a.type?4:6;e=Number(e);var o=a.item.x,s=a.item.y,l=i.item.x,c=i.item.y,u=void 0;switch(e){case 6:if(a.olditem){var d=a.olditem;u=[o,s,d.x1,d.y1,d.x2,d.y2]}else{var h=o-l,f=s-c;u=[o,s,l+h/3,c+f/3,o-h/3,s-f/3]}break;case 4:u=[o,s],a.olditem=a.item}a.setType(e,u)}}De.endChanges(t)}},{key:"selectPt",value:function(e,t){this.clearSelection(),null==e&&this.eachSeg(function(t){this.prev&&(e=t)}),this.addPtsToSelection(e),t&&(this.dragctrl=t,Re&&this.segs[e].setLinked(t))}},{key:"update",value:function(){var e=this.elem;return Kt(e)?(this.matrix=Ie(e),this.imatrix=this.matrix.inverse()):(this.matrix=null,this.imatrix=null),this.eachSeg(function(t){this.item=e.pathSegList.getItem(t),this.update()}),this}},{key:"endChanges",value:function(e){j()&&Ue.resetD(this.elem);var t=new pe(this.elem,{d:this.last_d},e);Ue.endChanges({cmd:t,elem:this.elem})}},{key:"addPtsToSelection",value:function(e){Array.isArray(e)||(e=[e]);for(var t=0;t<e.length;t++){var n=e[t];this.segs[n].ptgrip&&!this.selected_pts.includes(n)&&n>=0&&this.selected_pts.push(n)}this.selected_pts.sort();var r=this.selected_pts.length,a=[];for(a.length=r;r--;){var i=this.selected_pts[r],o=this.segs[i];o.select(!0),a[r]=o.ptgrip}var s=this.subpathIsClosed(this.selected_pts[0]);Ue.addPtsToSelection({grips:a,closedSubpath:s})}}]),e}(),nt=function(e){var t=Be[e.id];return t||(t=Be[e.id]=new tt(e)),t},rt=function(e){e in Be&&delete Be[e]},at=function(e,t){var n=e-_e,r=t-ye,a=Math.sqrt(n*n+r*r),i=Math.atan2(r,n)+be;return n=a*Math.cos(i)+_e,r=a*Math.sin(i)+ye,n-=me,r-=ve,a=Math.sqrt(n*n+r*r),i=Math.atan2(r,n)-be,{x:a*Math.cos(i)+me,y:a*Math.sin(i)+ve}},it=function(){var e=De.elem;if(be=Kt(e,!0)){var t=De.oldbbox;_e=t.x+t.width/2,ye=t.y+t.height/2;var n=Bt(e);me=n.x+n.width/2,ve=n.y+n.height/2;var r=me-_e,a=ve-ye,i=Math.sqrt(r*r+a*a),o=Math.atan2(a,r)+be;me=i*Math.cos(o)+_e,ve=i*Math.sin(o)+ye;for(var s=e.pathSegList,l=s.numberOfItems;l;){l-=1;var c=s.getItem(l),u=c.pathSegType;if(1!==u){var d=at(c.x,c.y),h=[d.x,d.y];if(null!=c.x1&&null!=c.x2){var f=at(c.x1,c.y1),p=at(c.x2,c.y2);h.splice(h.length,0,f.x,f.y,p.x,p.y)}Ze(u,l,h)}}Bt(e);var g=Ue.getSVGRoot().createSVGTransform(),m=$(e);g.setRotate(180*be/Math.PI,me,ve),m.replaceItem(g,0)}},ot=[0,"z","M","m","L","l","C","c","Q","q","A","a","H","h","V","v","S","s","T","t"],st=function(e,t){for(var n=e.pathSegList,r=n.numberOfItems,a=0,i=0,o="",s=null,l=0;l<r;++l){var c=n.getItem(l),u=c.x||0,d=c.y||0,h=c.x1||0,f=c.y1||0,p=c.x2||0,g=c.y2||0,m=c.pathSegType,v=ot[m]["to"+(t?"Lower":"Upper")+"Case"]();switch(m){case 1:o+="z",s&&!t&&(a=s[0],i=s[1]);break;case 12:u-=a;case 13:t?(a+=u,v="l"):(a=u+=a,v="L"),o+=lt(v,[[u,i]]);break;case 14:d-=i;case 15:t?(i+=d,v="l"):(i=d+=i,v="L"),o+=lt(v,[[a,d]]);break;case 2:case 4:case 18:u-=a,d-=i;case 5:case 3:case 19:t?(a+=u,i+=d):(a=u+=a,i=d+=i),2!==m&&3!==m||(s=[a,i]),o+=lt(v,[[u,d]]);break;case 6:u-=a,h-=a,p-=a,d-=i,f-=i,g-=i;case 7:t?(a+=u,i+=d):(h+=a,p+=a,f+=i,g+=i,a=u+=a,i=d+=i),o+=lt(v,[[h,f],[p,g],[u,d]]);break;case 8:u-=a,h-=a,d-=i,f-=i;case 9:t?(a+=u,i+=d):(h+=a,f+=i,a=u+=a,i=d+=i),o+=lt(v,[[h,f],[u,d]]);break;case 10:u-=a,d-=i;case 11:t?(a+=u,i+=d):(a=u+=a,i=d+=i),o+=lt(v,[[c.r1,c.r2]],[c.angle,c.largeArcFlag?1:0,c.sweepFlag?1:0],[u,d]);break;case 16:u-=a,p-=a,d-=i,g-=i;case 17:t?(a+=u,i+=d):(p+=a,g+=i,a=u+=a,i=d+=i),o+=lt(v,[[p,g],[u,d]])}}return o};function lt(e,t,n,r){Le.each(t,function(e,n){t[e]=ae(n)});var a=e+t.join(" ");return n&&(a+=" "+n.join(" ")),r&&(a+=" "+ae(r)),a}var ct,ut,dt,ht,ft,pt=(dt=!1,ht=null,ft=!1,{mouseDown:function(e,t,n,r){var a;if("path"!==Ue.getCurrentMode()){if(De){var i;if(De.storeD(),"pathpointgrip_"===(a=e.target.id).substr(0,14)){i=De.cur_pt=parseInt(a.substr(14),10),De.dragging=[n,r];var o=De.segs[i];e.shiftKey?o.selected?De.removePtFromSelection(i):De.addPtsToSelection(i):((De.selected_pts.length<=1||!o.selected)&&De.clearSelection(),De.addPtsToSelection(i))}else if(a.startsWith("ctrlpointgrip_")){De.dragging=[n,r];var s=a.split("_")[1].split("c");i=Number(s[0]);var l=Number(s[1]);De.selectPt(i,l)}if(!De.dragging){var c=Ue.getRubberBox();null==c&&(c=Ue.setRubberBox(Ue.selectorManager.getRubberBandBox()));var u=Ue.getCurrentZoom();Jt(c,{x:n*u,y:r*u,width:0,height:0,display:"inline"},100)}}}else{var d=n,h=r,f=Ue.getCurrentZoom(),g=d/f,m=h/f,v=$t("path_stretch_line");ct=[g,m],Ue.getGridSnapping()&&(g=tn(g),m=tn(m),d=tn(d),h=tn(h)),v||(v=document.createElementNS(p.SVG,"path"),Jt(v,{id:"path_stretch_line",stroke:"#22C","stroke-width":"0.5",fill:"none"}),v=$t("selectorParentGroup").appendChild(v)),v.setAttribute("display","inline");var _,y=Ue.getDrawnPath();if(y){for(var b=y.pathSegList,x=b.numberOfItems,w=6/f,S=!1;x;){x--;var k=b.getItem(x),C=k.x,A=k.y;if(g>=C-w&&g<=C+w&&m>=A-w&&m<=A+w){S=!0;break}}a=Ue.getId(),rt(a);var E,G,P=$t(a),I=b.numberOfItems;if(S){if(x<=1&&I>=2){var T=b.getItem(0).x,N=b.getItem(0).y;E=4===(G=v.pathSegList.getItem(1)).pathSegType?y.createSVGPathSegLinetoAbs(T,N):y.createSVGPathSegCurvetoCubicAbs(T,N,G.x1/f,G.y1/f,T,N);var L=y.createSVGPathSegClosePath();b.appendItem(E),b.appendItem(L)}else if(I<3)return!1;if(Le(v).remove(),Ue.setDrawnPath(null),Ue.setStarted(!1),dt){De.matrix&&Ue.remapElement(P,{},De.matrix.inverse());var M=P.getAttribute("d"),O=Le(De.elem).attr("d");return Le(De.elem).attr("d",O+M),Le(P).remove(),De.matrix&&it(),Fe(),pt.toEditMode(De.elem),De.selectPt(),!1}}else{if(!Le.contains(Ue.getContainer(),Ue.getMouseTarget(e)))return console.log("Clicked outside canvas"),!1;var V=y.pathSegList.numberOfItems,j=y.pathSegList.getItem(V-1),R=j.x,B=j.y;if(e.shiftKey){var D=Te(R,B,g,m);g=D.x,m=D.y}E=4===(G=v.pathSegList.getItem(1)).pathSegType?y.createSVGPathSegLinetoAbs(Ue.round(g),Ue.round(m)):y.createSVGPathSegCurvetoCubicAbs(Ue.round(g),Ue.round(m),G.x1/f,G.y1/f,G.x2/f,G.y2/f),y.pathSegList.appendItem(E),g*=f,m*=f,v.setAttribute("d",["M",g,m,g,m].join(" ")),_=V,dt&&(_+=De.segs.length),Ye(_,g,m)}}else{var U="M"+g+","+m+" ";Ue.setDrawnPath(Ue.addSVGElementFromJson({element:"path",curStyles:!0,attr:{d:U,id:Ue.getNextId(),opacity:Ue.getOpacity()/2}})),v.setAttribute("d",["M",d,h,d,h].join(" ")),_=dt?De.segs.length:0,Ye(_,d,h)}}},mouseMove:function(e,t){var n=Ue.getCurrentZoom();ft=!0;var r=Ue.getDrawnPath();if("path"!==Ue.getCurrentMode())if(De.dragging){var a=qe({x:De.dragging[0],y:De.dragging[1]},De),i=qe({x:e,y:t},De),o=i.x-a.x,s=i.y-a.y;De.dragging=[e,t],De.dragctrl?De.moveCtrl(o,s):De.movePts(o,s)}else De.selected_pts=[],De.eachSeg(function(e){if(this.next||this.prev){var t=Ue.getRubberBox().getBBox(),n=ze(this),r={x:n.x,y:n.y,width:0,height:0},a=Ne(t,r);this.select(a),a&&De.selected_pts.push(this.index)}});else{if(!r)return;var l=r.pathSegList,c=l.numberOfItems-1;if(ct){var u=Xe("1c1"),d=Xe("0c2");u.setAttribute("cx",e),u.setAttribute("cy",t),u.setAttribute("display","inline");var h=ct[0],f=ct[1],p=h+(h-e/n),g=f+(f-t/n);d.setAttribute("cx",p*n),d.setAttribute("cy",g*n),d.setAttribute("display","inline");var m=Qe(1);if(Jt(m,{x1:e,y1:t,x2:p*n,y2:g*n,display:"inline"}),0===c)ut=[e,t];else{var v=l.getItem(c-1),_=v.x,y=v.y;6===v.pathSegType?(_+=_-v.x2,y+=y-v.y2):ut&&(_=ut[0]/n,y=ut[1]/n),Ze(6,c,[h,f,_,y,p,g],r)}}else{var b=$t("path_stretch_line");if(b){var x=l.getItem(c);if(6===x.pathSegType){var w=x.x+(x.x-x.x2),S=x.y+(x.y-x.y2);Ze(6,1,[e,t,w*n,S*n,e,t],b)}else ut?Ze(6,1,[e,t,ut[0],ut[1],e,t],b):Ze(4,1,[e,t],b)}}}},mouseUp:function(e,t,n,r){var a=Ue.getDrawnPath();if("path"===Ue.getCurrentMode())return ct=null,a||(t=$t(Ue.getId()),Ue.setStarted(!1),ut=null),{keep:!0,element:t};var i=Ue.getRubberBox();if(De.dragging){var o=De.cur_pt;De.dragging=!1,De.dragctrl=!1,De.update(),ft&&De.endChanges("Move path point(s)"),e.shiftKey||ft||De.selectPt(o)}else i&&"none"!==i.getAttribute("display")?(i.setAttribute("display","none"),i.getAttribute("width")<=2&&i.getAttribute("height")<=2&&pt.toSelectMode(e.target)):pt.toSelectMode(e.target);ft=!1},toEditMode:function(e){De=nt(e),Ue.setCurrentMode("pathedit"),Ue.clearSelection(),De.show(!0).update(),De.oldbbox=Bt(De.elem),dt=!1},toSelectMode:function(e){var t=e===De.elem;Ue.setCurrentMode("select"),De.show(!1),ht=!1,Ue.clearSelection(),De.matrix&&it(),t&&(Ue.call("selected",[e]),Ue.addToSelection([e],!0))},addSubPath:function(e){e?(Ue.setCurrentMode("path"),dt=!0):(pt.clear(!0),pt.toEditMode(De.elem))},select:function(e){ht===e?(pt.toEditMode(e),Ue.setCurrentMode("pathedit")):ht=e},reorient:function(){var e=Ue.getSelectedElements()[0];if(e&&0!==Kt(e)){var t=new ge("Reorient path"),n={d:e.getAttribute("d"),transform:e.getAttribute("transform")};t.addSubCommand(new pe(e,n)),Ue.clearSelection(),this.resetOrientation(e),Ue.addCommandToHistory(t),nt(e).show(!1).matrix=null,this.clear(),Ue.addToSelection([e],!0),Ue.call("changed",Ue.getSelectedElements())}},clear:function(e){var t=Ue.getDrawnPath();if(ht=null,t){var n=$t(Ue.getId());Le($t("path_stretch_line")).remove(),Le(n).remove(),Le($t("pathpointgrip_container")).find("*").attr("display","none"),ut=null,Ue.setDrawnPath(null),Ue.setStarted(!1)}else"pathedit"===Ue.getCurrentMode()&&this.toSelectMode();De&&De.init().show(!1)},resetOrientation:function(e){if(null==e||"path"!==e.nodeName)return!1;var t=$(e),n=Pe(t).matrix;t.clear(),e.removeAttribute("transform");for(var r=e.pathSegList,a=r.numberOfItems,i=function(t){var a=r.getItem(t),i=a.pathSegType;if(1===i)return"continue";var o=[];Le.each(["",1,2],function(e,t){var r=a["x"+t],i=a["y"+t];if(void 0!==r&&void 0!==i){var s=ke(r,i,n);o.splice(o.length,0,s.x,s.y)}}),Ze(i,t,o,e)},o=0;o<a;++o)i(o);!function(e,t){for(var n=Bt(e),r=0;r<2;r++){var a=0===r?"fill":"stroke",i=e.getAttribute(a);if(i&&i.startsWith("url(")){var o=Zt(i);if("linearGradient"===o.tagName){var s=o.getAttribute("x1")||0,l=o.getAttribute("y1")||0,c=o.getAttribute("x2")||1,u=o.getAttribute("y2")||0;s=n.width*s+n.x,l=n.height*l+n.y,c=n.width*c+n.x,u=n.height*u+n.y;var d=ke(s,l,t),h=ke(c,u,t),f={};f.x1=(d.x-n.x)/n.width,f.y1=(d.y-n.y)/n.height,f.x2=(h.x-n.x)/n.width,f.y2=(h.y-n.y)/n.height;var p=o.cloneNode(!0);Le(p).attr(f),p.id=Ue.getNextId(),Vt().append(p),e.setAttribute(a,"url(#"+p.id+")")}}}}(e,n)},zoomChange:function(){"pathedit"===Ue.getCurrentMode()&&De.update()},getNodePoint:function(){var e=De.selected_pts.length?De.selected_pts[0]:1,t=De.segs[e];return{x:t.item.x,y:t.item.y,type:t.type}},linkControlPoints:function(e){Re=e},clonePathNode:function(){De.storeD();for(var e=De.selected_pts,t=e.length,n=[];t--;){var r=e[t];De.addSeg(r),n.push(r+t),n.push(r+t+1)}De.init().addPtsToSelection(n),De.endChanges("Clone path node(s)")},opencloseSubPath:function(){var e=De.selected_pts;if(1===e.length){var t,n,r=De.elem,a=r.pathSegList,i=e[0],o=null,s=null;if(De.eachSeg(function(e){return 2===this.type&&e<=i&&(s=this.item),e<=i||(2===this.type?(o=e,!1):1===this.type?(o=!1,!1):void 0)}),null==o&&(o=De.segs.length-1),!1!==o){var l=r.createSVGPathSegLinetoAbs(s.x,s.y),c=r.createSVGPathSegClosePath();return o===De.segs.length-1?(a.appendItem(l),a.appendItem(c)):(He(r,c,o),He(r,l,o)),void De.init().selectPt(o+1)}if(De.segs[i].mate)return a.removeItem(i),a.removeItem(i),void De.init().selectPt(i-1);for(var u=0;u<a.numberOfItems;u++){var d=a.getItem(u);if(2===d.pathSegType)t=u;else if(u===i)a.removeItem(t);else if(1===d.pathSegType&&i<u){n=u-1,a.removeItem(u);break}}for(var h=i-t-1;h--;)He(r,a.getItem(t),n);var f=a.getItem(t);Ze(2,t,[f.x,f.y]),De.init().selectPt(0)}},deletePathNode:function(){if(pt.canDeleteNodes){De.storeD();for(var e=De.selected_pts,t=e.length;t--;){var n=e[t];De.deleteSeg(n)}if(function e(){var t=De.elem.pathSegList,n=t.numberOfItems,r=function(e,n){for(;n--;)t.removeItem(e)};if(n<=1)return!0;for(;n--;){var a=t.getItem(n);if(1===a.pathSegType){var i=t.getItem(n-1),o=t.getItem(n-2);if(2===i.pathSegType){r(n-1,2),e();break}if(2===o.pathSegType){r(n-2,3),e();break}}else if(2===a.pathSegType&&n>0){var s=t.getItem(n-1).pathSegType;if(2===s){r(n-1,1),e();break}if(1===s&&t.numberOfItems-1===n){r(n,1),e();break}}}return!1}(),De.elem.pathSegList.numberOfItems<=1)return pt.toSelectMode(De.elem),void Ue.canvas.deleteSelectedElements();if(De.init(),De.clearSelection(),window.opera){var r=Le(De.elem);r.attr("d",r.attr("d"))}De.endChanges("Delete path node(s)")}},smoothPolylineIntoPath:function(e){var t,n=e.points,r=n.numberOfItems;if(r>=4){var a=n.getItem(0),i=null,o=[];for(o.push(["M",a.x,",",a.y," C"].join("")),t=1;t<=r-4;t+=3){var s=n.getItem(t),l=n.getItem(t+1),c=n.getItem(t+2);if(i){var u=Je(i,s,a);if(u&&2===u.length){var 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L=t.points.length,M=0;M<L;++M){var O=t.points[M],V=r(O.x,O.y),j=V.x,R=V.y;t.points[M].x=j,t.points[M].y=R}for(var B="",D=0;D<L;++D){var U=t.points[D];B+=U.x+","+U.y+" "}e.setAttribute("points",B);break;case"path":var F=e.pathSegList,H=F.numberOfItems;t.d=[];for(var z=0;z<H;++z){var q=F.getItem(z);t.d[z]={type:q.pathSegType,x:q.x,y:q.y,x1:q.x1,y1:q.y1,x2:q.x2,y2:q.y2,r1:q.r1,r2:q.r2,angle:q.angle,largeArcFlag:q.largeArcFlag,sweepFlag:q.sweepFlag}}H=t.d.length;var Y=t.d[0],W=r(Y.x,Y.y);t.d[0].x=W.x,t.d[0].y=W.y;for(var X=1;X<H;++X){var Q=t.d[X];if(Q.type%2==0){var K=r(void 0!==Q.x?Q.x:W.x,void 0!==Q.y?Q.y:W.y),Z=r(Q.x1,Q.y1),J=r(Q.x2,Q.y2);Q.x=K.x,Q.y=K.y,Q.x1=Z.x,Q.y1=Z.y,Q.x2=J.x,Q.y2=J.y,Q.r1=a(Q.r1),Q.r2=i(Q.r2)}else Q.x=a(Q.x),Q.y=i(Q.y),Q.x1=a(Q.x1),Q.y1=i(Q.y1),Q.x2=a(Q.x2),Q.y2=i(Q.y2),Q.r1=a(Q.r1),Q.r2=i(Q.r2)}var ee="";H=t.d.length;for(var te=0;te<H;++te){var ne=t.d[te],re=ne.type;switch(ee+=Fn[re],re){case 13:case 12:ee+=ne.x+" ";break;case 15:case 14:ee+=ne.y+" ";break;case 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ge("Transform"),_={},y=null,b=[];switch(t.tagName){case"line":b=["x1","y1","x2","y2"];break;case"circle":b=["cx","cy","r"];break;case"ellipse":b=["cx","cy","rx","ry"];break;case"foreignObject":case"rect":case"image":b=["width","height","x","y"];break;case"use":case"text":case"tspan":b=["x","y"];break;case"polygon":case"polyline":(y={}).points=t.getAttribute("points");var x=t.points,w=x.numberOfItems;_.points=new Array(w);for(var S=0;S<w;++S){var k=x.getItem(S);_.points[S]={x:k.x,y:k.y}}break;case"path":(y={}).d=t.getAttribute("d"),_.d=t.getAttribute("d")}if(b.length?(_=qn(t).attr(b),qn.each(_,function(e,t){_[e]=se(e,t)})):m&&(_={x:qn(m).attr("x")||0,y:qn(m).attr("y")||0}),null==y&&(y=qn.extend(!0,{},_),qn.each(y,function(e,t){y[e]=se(e,t)})),y.transform=Vn.getStartTransform()||"","g"===t.tagName&&!m||"a"===t.tagName){var C=Bt(t);f={x:C.x+C.width/2,y:C.y+C.height/2},g=ke(C.x+C.width/2,C.y+C.height/2,Pe(r).matrix);var A=Kt(t);if(A){var E,G=A*Math.PI/180;E=Math.abs(G)>1e-10?Math.sin(G)/(1-Math.cos(G)):2/G;for(var P=0;P<r.numberOfItems;++P){var I=r.getItem(P);if(4===I.type){var T=I.matrix;f.y=(E*T.e+T.f)/2,f.x=(T.e-E*T.f)/2,r.removeItem(P);break}}}var N,L,M=r.numberOfItems,O=0,V=0,R=0;if(M&&(N=r.getItem(0).matrix),M>=3&&3===r.getItem(M-2).type&&2===r.getItem(M-3).type&&2===r.getItem(M-1).type){R=3;for(var B=r.getItem(M-3).matrix,D=r.getItem(M-2).matrix,U=r.getItem(M-1).matrix,F=t.childNodes,H=F.length;H--;){var z=F.item(H);if(O=0,V=0,1===z.nodeType){var q=$(z);if(!q)continue;var Y=Pe(q).matrix,W=Kt(z);if(L=Vn.getStartTransform(),Vn.setStartTransform(z.getAttribute("transform")),W||Ee(q)){var X=n.createSVGTransform();X.setMatrix(Ae(B,D,U,Y)),q.clear(),q.appendItem(X)}else{var Q=Ae(Y.inverse(),U,Y),K=n.createSVGMatrix();K.e=-Q.e,K.f=-Q.f;var Z=Ae(K.inverse(),Y.inverse(),B,D,U,Y,Q.inverse()),J=n.createSVGTransform(),ee=n.createSVGTransform(),te=n.createSVGTransform();J.setTranslate(Q.e,Q.f),ee.setScale(Z.a,Z.d),te.setTranslate(K.e,K.f),q.appendItem(te),q.appendItem(ee),q.appendItem(J)}v.addSubCommand(e(z)),Vn.setStartTransform(L)}}r.removeItem(M-1),r.removeItem(M-2),r.removeItem(M-3)}else if(M>=3&&1===r.getItem(M-1).type){R=3;var ne=Pe(r).matrix,re=n.createSVGTransform();re.setMatrix(ne),r.clear(),r.appendItem(re)}else if((1===M||M>1&&3!==r.getItem(1).type)&&2===r.getItem(0).type){R=2;var ae=Pe(r).matrix;r.removeItem(0);var ie=Pe(r).matrix.inverse(),oe=Ae(ie,ae);if(O=oe.e,V=oe.f,0!==O||0!==V){for(var le=t.childNodes,ce=le.length,ue=[];ce--;){var de=le.item(ce);if(1===de.nodeType){if(de.getAttribute("clip-path")){var he=de.getAttribute("clip-path");ue.includes(he)||(Yn(he,O,V),ue.push(he))}L=Vn.getStartTransform(),Vn.setStartTransform(de.getAttribute("transform"));var fe=$(de);if(fe){var me=n.createSVGTransform();me.setTranslate(O,V),fe.numberOfItems?fe.insertItemBefore(me,0):fe.appendItem(me),v.addSubCommand(e(de));for(var ve=t.getElementsByTagNameNS(p.SVG,"use"),_e="#"+de.id,ye=ve.length;ye--;){var be=ve.item(ye);if(_e===Mt(be)){var xe=n.createSVGTransform();xe.setTranslate(-O,-V),$(be).insertItemBefore(xe,0),v.addSubCommand(e(be))}}Vn.setStartTransform(L)}}}Vn.setStartTransform(L)}}else{if(1!==M||1!==r.getItem(0).type||A){if(A){var we=n.createSVGTransform();we.setRotate(A,g.x,g.y),r.numberOfItems?r.insertItemBefore(we,0):r.appendItem(we)}return 0===r.numberOfItems&&t.removeAttribute("transform"),null}R=1;for(var Se=r.getItem(0).matrix,Ge=t.childNodes,Ie=Ge.length;Ie--;){var Te=Ge.item(Ie);if(1===Te.nodeType){L=Vn.getStartTransform(),Vn.setStartTransform(Te.getAttribute("transform"));var Ne=$(Te);if(!Ne)continue;var Le=Ae(Se,Pe(Ne).matrix),Me=n.createSVGTransform();Me.setMatrix(Le),Ne.clear(),Ne.appendItem(Me,0),v.addSubCommand(e(Te)),Vn.setStartTransform(L);var Oe=Te.getAttribute("stroke-width");if("none"!==Te.getAttribute("stroke")&&!isNaN(Oe)){var Ve=(Math.abs(Le.a)+Math.abs(Le.d))/2;Te.setAttribute("stroke-width",Oe*Ve)}}}r.clear()}if(2===R){if(A){g={x:f.x+N.e,y:f.y+N.f};var je=n.createSVGTransform();je.setRotate(A,g.x,g.y),r.numberOfItems?r.insertItemBefore(je,0):r.appendItem(je)}}else if(3===R){var Re=Pe(r).matrix,Be=n.createSVGTransform();Be.setRotate(A,f.x,f.y);var De=Be.matrix,Ue=n.createSVGTransform();Ue.setRotate(A,g.x,g.y);var Fe=Ue.matrix.inverse(),He=Re.inverse(),ze=Ae(He,Fe,De,Re);if(O=ze.e,V=ze.f,0!==O||0!==V)for(var qe=t.childNodes,Ye=qe.length;Ye--;){var We=qe.item(Ye);if(1===We.nodeType){L=Vn.getStartTransform(),Vn.setStartTransform(We.getAttribute("transform"));var Xe=$(We),Qe=n.createSVGTransform();Qe.setTranslate(O,V),Xe.numberOfItems?Xe.insertItemBefore(Qe,0):Xe.appendItem(Qe),v.addSubCommand(e(We)),Vn.setStartTransform(L)}}A&&(r.numberOfItems?r.insertItemBefore(Ue,0):r.appendItem(Ue))}}else{var Ke,Ze=Bt(t);if(!Ze&&"path"!==t.tagName)return null;var $e=Kt(t);if($e){f={x:Ze.x+Ze.width/2,y:Ze.y+Ze.height/2},g=ke(Ze.x+Ze.width/2,Ze.y+Ze.height/2,Pe(r).matrix);for(var Je=$e*Math.PI/180,et=Math.abs(Je)>1e-10?Math.sin(Je)/(1-Math.cos(Je)):2/Je,tt=0;tt<r.numberOfItems;++tt){var nt=r.getItem(tt);if(4===nt.type){var rt=nt.matrix;f.y=(et*rt.e+rt.f)/2,f.x=(rt.e-et*rt.f)/2,r.removeItem(tt);break}}}var at=0,it=r.numberOfItems;if(!j()){var ot=t.getAttribute("fill");if(ot&&ot.startsWith("url(")){var st=Zt(ot),lt="pattern";if(st.tagName!==lt&&(lt="gradient"),"userSpaceOnUse"===st.getAttribute(lt+"Units")){Ke=Pe(r).matrix;var ct=$(st),ut=Pe(ct).matrix,dt="matrix("+[(Ke=Ae(Ke,ut)).a,Ke.b,Ke.c,Ke.d,Ke.e,Ke.f].join(",")+")";st.setAttribute(lt+"Transform",dt)}}}if(it>=3&&3===r.getItem(it-2).type&&2===r.getItem(it-3).type&&2===r.getItem(it-1).type)at=3,Ke=Pe(r,it-3,it-1).matrix,r.removeItem(it-1),r.removeItem(it-2),r.removeItem(it-3);else if(4===it&&1===r.getItem(it-1).type){at=3,Ke=Pe(r).matrix;var ht=n.createSVGTransform();ht.setMatrix(Ke),r.clear(),r.appendItem(ht),Ke=n.createSVGMatrix()}else if((1===it||it>1&&3!==r.getItem(1).type)&&2===r.getItem(0).type){at=2;var ft=r.getItem(0).matrix,pt=Pe(r,1).matrix,gt=pt.inverse();Ke=Ae(gt,ft,pt),r.removeItem(0)}else{if(1!==it||1!==r.getItem(0).type||$e){if($e){var mt=n.createSVGTransform();mt.setRotate($e,g.x,g.y),r.numberOfItems?r.insertItemBefore(mt,0):r.appendItem(mt)}return 0===r.numberOfItems&&t.removeAttribute("transform"),null}switch(Ke=Pe(r).matrix,t.tagName){case"line":_=qn(t).attr(["x1","y1","x2","y2"]);case"polyline":case"polygon":if(_.points=t.getAttribute("points"),_.points){var vt=t.points,_t=vt.numberOfItems;_.points=new Array(_t);for(var yt=0;yt<_t;++yt){var bt=vt.getItem(yt);_.points[yt]={x:bt.x,y:bt.y}}}case"path":_.d=t.getAttribute("d"),at=1,r.clear()}}if(1!==at&&2!==at&&3!==at||zn(t,_,Ke),2===at){if($e){Ee(r)||(g={x:f.x+Ke.e,y:f.y+Ke.f});var xt=n.createSVGTransform();xt.setRotate($e,g.x,g.y),r.numberOfItems?r.insertItemBefore(xt,0):r.appendItem(xt)}if("text"===t.tagName)for(var wt=t.childNodes,St=wt.length;St--;){var kt=wt.item(St);if("tspan"===kt.tagName){var Ct={x:qn(kt).attr("x")||0,y:qn(kt).attr("y")||0};zn(kt,Ct,Ke)}}}else if(3===at&&$e){var At=Pe(r).matrix,Et=n.createSVGTransform();Et.setRotate($e,f.x,f.y);var Gt=Et.matrix,Pt=n.createSVGTransform();Pt.setRotate($e,g.x,g.y);var It=Pt.matrix.inverse(),Tt=At.inverse(),Nt=Ae(Tt,It,Gt,At);zn(t,_,Nt),$e&&(r.numberOfItems?r.insertItemBefore(Pt,0):r.appendItem(Pt))}}return 0===r.numberOfItems&&t.removeAttribute("transform"),v.addSubCommand(new pe(t,y)),v},Xn=jQuery,Qn=F()?10:4,Kn=function(){function e(t,n,a){r(this,e),this.id=t,this.selectedElement=n,this.locked=!0,this.selectorGroup=jn.createSVGElement({element:"g",attr:{id:"selectorGroup"+this.id}}),this.selectorRect=this.selectorGroup.appendChild(jn.createSVGElement({element:"path",attr:{id:"selectedBox"+this.id,fill:"none",stroke:"#22C","stroke-width":"1","stroke-dasharray":"5,5",style:"pointer-events:none"}})),this.gripCoords={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.reset(this.selectedElement,a)}return i(e,[{key:"reset",value:function(e,t){this.locked=!0,this.selectedElement=e,this.resize(t),this.selectorGroup.setAttribute("display","inline")}},{key:"updateGripCursors",value:function(e){var t,n=[],r=Math.round(e/45);for(t in r<0&&(r+=8),Bn.selectorGrips)n.push(t);for(;r>0;)n.push(n.shift()),r--;var a=0;for(t in Bn.selectorGrips)Bn.selectorGrips[t].setAttribute("style","cursor:"+n[a]+"-resize"),a++}},{key:"showGrips",value:function(e){var t=e?"inline":"none";Bn.selectorGripsGroup.setAttribute("display",t);var n=this.selectedElement;this.hasGrips=e,n&&e&&(this.selectorGroup.append(Bn.selectorGripsGroup),this.updateGripCursors(Kt(n)))}},{key:"resize",value:function(e){var t=this.selectorRect,n=Bn,r=n.selectorGrips,a=this.selectedElement,i=a.getAttribute("stroke-width"),o=jn.getCurrentZoom(),s=1/o;"none"===a.getAttribute("stroke")||isNaN(i)||(s+=i/2);var l=a.tagName;"text"===l&&(s+=2/o);var c=$(a),u=Pe(c).matrix;if(u.e*=o,u.f*=o,e||(e=Bt(a)),"g"===l&&!Xn.data(a,"gsvg")){var d=Yt([a.childNodes]);d&&(e=d)}var h=e.x,f=e.y,p=e.width,g=e.height;s*=o;var m=Ge(h*o,f*o,p*o,g*o,u),v=m.aabox,_=v.x-s,y=v.y-s,b=v.width+2*s,x=v.height+2*s,w=_+b/2,S=y+x/2,k=Kt(a);if(k){var C=jn.svgRoot().createSVGTransform();C.setRotate(-k,w,S);var A=C.matrix;m.tl=ke(m.tl.x,m.tl.y,A),m.tr=ke(m.tr.x,m.tr.y,A),m.bl=ke(m.bl.x,m.bl.y,A),m.br=ke(m.br.x,m.br.y,A);var E=m.tl,G=E.x,P=E.y,I=E.x,T=E.y,N=Math.min,L=Math.max;_=G=N(G,N(m.tr.x,N(m.bl.x,m.br.x)))-s,y=P=N(P,N(m.tr.y,N(m.bl.y,m.br.y)))-s,b=(I=L(I,L(m.tr.x,L(m.bl.x,m.br.x)))+s)-G,x=(T=L(T,L(m.tr.y,L(m.bl.y,m.br.y)))+s)-P}var M="M"+_+","+y+" L"+(_+b)+","+y+" "+(_+b)+","+(y+x)+" "+_+","+(y+x)+"z";t.setAttribute("d",M);var O=k?"rotate("+[k,w,S].join(",")+")":"";for(var V in this.selectorGroup.setAttribute("transform",O),this.gripCoords={nw:[_,y],ne:[_+b,y],sw:[_,y+x],se:[_+b,y+x],n:[_+b/2,y],w:[_,y+x/2],e:[_+b,y+x/2],s:[_+b/2,y+x]},this.gripCoords){var j=this.gripCoords[V];r[V].setAttribute("cx",j[0]),r[V].setAttribute("cy",j[1])}n.rotateGripConnector.setAttribute("x1",_+b/2),n.rotateGripConnector.setAttribute("y1",y),n.rotateGripConnector.setAttribute("x2",_+b/2),n.rotateGripConnector.setAttribute("y2",y-5*Qn),n.rotateGrip.setAttribute("cx",_+b/2),n.rotateGrip.setAttribute("cy",y-5*Qn)}}]),e}(),Zn=function(){function t(){r(this,t),this.selectorParentGroup=null,this.rubberBandBox=null,this.selectors=[],this.selectorMap={},this.selectorGrips={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.selectorGripsGroup=null,this.rotateGripConnector=null,this.rotateGrip=null,this.initGroup()}return i(t,[{key:"initGroup",value:function(){for(var e in this.selectorParentGroup&&this.selectorParentGroup.parentNode&&this.selectorParentGroup.remove(),this.selectorParentGroup=jn.createSVGElement({element:"g",attr:{id:"selectorParentGroup"}}),this.selectorGripsGroup=jn.createSVGElement({element:"g",attr:{display:"none"}}),this.selectorParentGroup.append(this.selectorGripsGroup),jn.svgRoot().append(this.selectorParentGroup),this.selectorMap={},this.selectors=[],this.rubberBandBox=null,this.selectorGrips){var t=jn.createSVGElement({element:"circle",attr:{id:"selectorGrip_resize_"+e,fill:"#22C",r:Qn,style:"cursor:"+e+"-resize","stroke-width":2,"pointer-events":"all"}});Xn.data(t,"dir",e),Xn.data(t,"type","resize"),this.selectorGrips[e]=this.selectorGripsGroup.appendChild(t)}if(this.rotateGripConnector=this.selectorGripsGroup.appendChild(jn.createSVGElement({element:"line",attr:{id:"selectorGrip_rotateconnector",stroke:"#22C","stroke-width":"1"}})),this.rotateGrip=this.selectorGripsGroup.appendChild(jn.createSVGElement({element:"circle",attr:{id:"selectorGrip_rotate",fill:"lime",r:Qn,stroke:"#22C","stroke-width":2,style:"cursor:url("+Rn.imgPath+"rotate.png) 12 12, auto;"}})),Xn.data(this.rotateGrip,"type","rotate"),!Xn("#canvasBackground").length){var 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Kn(r,t,n),this.selectorParentGroup.append(this.selectors[r].selectorGroup),this.selectorMap[t.id]=this.selectors[r],this.selectors[r]}},{key:"releaseSelector",value:function(e){if(null!=e){var t=this.selectors.length,n=this.selectorMap[e.id];n.locked||console.log("WARNING! selector was released but was already unlocked");for(var r=0;r<t;++r)if(this.selectors[r]&&this.selectors[r]===n){delete this.selectorMap[e.id],n.locked=!1,n.selectedElement=null,n.showGrips(!1);try{n.selectorGroup.setAttribute("display","none")}catch(e){}break}}}},{key:"getRubberBandBox",value:function(){return this.rubberBandBox||(this.rubberBandBox=this.selectorParentGroup.appendChild(jn.createSVGElement({element:"rect",attr:{id:"selectorRubberBand",fill:"#22C","fill-opacity":.15,stroke:"#22C","stroke-width":.5,display:"none",style:"pointer-events:none"}}))),this.rubberBandBox}}]),t}(),$n=q(jQuery),Jn=de,er=he,tr=fe,nr=pe,rr=ge,ar=xe,ir=ce;window.console||(window.console={},window.console.log=function(e){},window.console.dir=function(e){}),window.opera&&(window.console.log=function(e){window.opera.postError(e)},window.console.dir=function(e){});var or=function t(a,i){r(this,t);var o={show_outside_canvas:!0,selectNew:!0,dimensions:[640,480]};i&&$n.extend(o,i);var s=o.dimensions,l=this,c=a.ownerDocument,u=c.importNode(Tt('<svg id="svgroot" xmlns="'+p.SVG+'" xlinkns="'+p.XLINK+'" width="'+s[0]+'" height="'+s[1]+'" x="'+s[0]+'" y="'+s[1]+'" overflow="visible"><defs><filter id="canvashadow" filterUnits="objectBoundingBox"><feGaussianBlur in="SourceAlpha" stdDeviation="4" result="blur"/><feOffset 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t=document.createElementNS(p.SVG,"g");e.replaceWith(t),$n(t).append(e).data("gsvg",e)[0].id=H()},Ye={};l.call=Y,l.bind=function(e,t){var n=Ye[e];return Ye[e]=t,n},this.prepareSvg=function(e){this.sanitizeSvg(e.documentElement),h(e.getElementsByTagNameNS(p.SVG,"path")).forEach(function(e){e.setAttribute("d",P.convertPath(e)),P.fixEnd(e)})};var We=function(e){if(!R())return e;var t=e.cloneNode(!0);return e.before(t),e.remove(),F.releaseSelector(e),w[0]=t,F.requestSelector(t).showGrips(!0),t};this.setRotationAngle=function(e,t){e=parseFloat(e);var n=w[0],r=n.getAttribute("transform"),a=Bt(n),i=a.x+a.width/2,o=a.y+a.height/2,s=$(n);s.numberOfItems>0&&(4===s.getItem(0).type&&s.removeItem(0));if(0!==e){var l=ke(i,o,Pe(s).matrix),c=u.createSVGTransform();c.setRotate(e,l.x,l.y),s.numberOfItems?s.insertItemBefore(c,0):s.appendItem(c)}else 0===s.numberOfItems&&n.removeAttribute("transform");if(!t){var 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t={x:0,y:0},n=st,r=lt,a=ct,i=ut,o=e*e,s=o*e,l=[[-1,3,-3,1],[3,-6,3,0],[-3,0,3,0],[1,4,1,0]];return t.x=1/6*((n.x*l[0][0]+r.x*l[0][1]+a.x*l[0][2]+i.x*l[0][3])*s+(n.x*l[1][0]+r.x*l[1][1]+a.x*l[1][2]+i.x*l[1][3])*o+(n.x*l[2][0]+r.x*l[2][1]+a.x*l[2][2]+i.x*l[2][3])*e+(n.x*l[3][0]+r.x*l[3][1]+a.x*l[3][2]+i.x*l[3][3])),t.y=1/6*((n.y*l[0][0]+r.y*l[0][1]+a.y*l[0][2]+i.y*l[0][3])*s+(n.y*l[1][0]+r.y*l[1][1]+a.y*l[1][2]+i.y*l[1][3])*o+(n.y*l[2][0]+r.y*l[2][1]+a.y*l[2][2]+i.y*l[2][3])*e+(n.y*l[3][0]+r.y*l[3][1]+a.y*l[3][2]+i.y*l[3][3])),{x:t.x,y:t.y}},$n(a).mousedown(function(e){if(!l.spaceKey&&1!==e.button){var t=2===e.button;e.altKey&&l.cloneSelectedElements(0,0),Ke=$n("#svgcontent g")[0].getScreenCTM().inverse();var n=ke(e.pageX,e.pageY,Ke),r=n.x*_,a=n.y*_;e.preventDefault(),t&&(xe="select",Re=n);var i=r/_,s=a/_,c=ee(e);"a"===c.tagName&&1===c.childNodes.length&&(c=c.firstChild);var d=i;nt=et=i;var 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6===(e=this.validateHex(e)).length&&(e+="ff"),e.length>6?(t=e.substring(0,2),n=e.substring(2,4),r=e.substring(4,6),a=e.substring(6,e.length)):(e.length>4&&(t=e.substring(4,e.length),e=e.substring(0,4)),e.length>2&&(n=e.substring(2,e.length),e=e.substring(0,2)),e.length>0&&(r=e.substring(0,e.length))),{r:this.hexToInt(t),g:this.hexToInt(n),b:this.hexToInt(r),a:this.hexToInt(a)}},validateHex:function(e){return(e=e.toLowerCase().replace(/[^a-f0-9]/g,"")).length>8&&(e=e.substring(0,8)),e},rgbaToHex:function(e){return this.intToHex(e.r)+this.intToHex(e.g)+this.intToHex(e.b)+this.intToHex(e.a)},intToHex:function(e){var t=(0|e).toString(16);return 1===t.length&&(t="0"+t),t.toLowerCase()},hexToInt:function(e){return parseInt(e,16)},rgbToHsv:function(e){var t,n=e.r/255,r=e.g/255,a=e.b/255,i={h:0,s:0,v:0},o=0,s=0;return 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new Error("Invalid Mode")}switch(e){case"h":break;case"s":case"v":case"a":setTimeout(function(){y.call(c,z,100),y.call(c,W,100),_.call(c,Q,260),y.call(c,Q,100),_.call(c,K,260),y.call(c,K,100)},0);break;case"r":case"g":case"b":setTimeout(function(){m.call(c,F,"transparent"),m.call(c,H,"transparent"),y.call(c,W,100),y.call(c,z,100),_.call(c,z,t),_.call(c,q,t-260),_.call(c,W,n-780),_.call(c,X,n-520),_.call(c,Q,n),_.call(c,K,n-260),_.call(c,$,260),y.call(c,$,100)},0)}null!=r.val("ahex")&&f.call(c,r)}function f(e,t){(null==t||t!==ee&&t!==J)&&function(e,t){if(t!==J)switch(u.color.mode){case"h":var n=e.val("sv");J.val("xy",{x:null!=n?n.s:100,y:100-(null!=n?n.v:100)},t);break;case"s":case"a":var r=e.val("hv");J.val("xy",{x:r&&r.h||0,y:100-(null!=r?r.v:100)},t);break;case"v":var a=e.val("hs");J.val("xy",{x:a&&a.h||0,y:100-(null!=a?a.s:100)},t);break;case"r":var i=e.val("bg");J.val("xy",{x:i&&i.b||0,y:255-(i&&i.g||0)},t);break;case"g":var o=e.val("br");J.val("xy",{x:o&&o.b||0,y:255-(o&&o.r||0)},t);break;case"b":var s=e.val("rg");J.val("xy",{x:s&&s.r||0,y:255-(s&&s.g||0)},t)}if(t!==ee)switch(u.color.mode){case"h":ee.val("y",360-(e.val("h")||0),t);break;case"s":var l=e.val("s");ee.val("y",100-(null!=l?l:100),t);break;case"v":var c=e.val("v");ee.val("y",100-(null!=c?c:100),t);break;case"r":ee.val("y",255-(e.val("r")||0),t);break;case"g":ee.val("y",255-(e.val("g")||0),t);break;case"b":ee.val("y",255-(e.val("b")||0),t);break;case"a":var d=e.val("a");ee.val("y",255-(null!=d?d:255),t)}}.call(c,e,t),setTimeout(function(){(function(e){try{var t=e.val("all");ne.css({backgroundColor:t&&"#"+t.hex||"transparent"}),y.call(c,ne,t&&lr(100*t.a/255,4)||0)}catch(e){}}).call(c,e),function(e){switch(u.color.mode){case"h":m.call(c,F,new o({h:e.val("h")||0,s:100,v:100}).val("hex"));break;case"s":case"a":var t=e.val("s");y.call(c,q,100-(null!=t?t:100));break;case"v":var n=e.val("v");y.call(c,z,null!=n?n:100);break;case"r":y.call(c,q,lr((e.val("r")||0)/255*100,4));break;case"g":y.call(c,q,lr((e.val("g")||0)/255*100,4));break;case"b":y.call(c,q,lr((e.val("b")||0)/255*100))}var r=e.val("a");y.call(c,Y,lr(100*(255-(r||0))/255,4))}.call(c,e),function(e){switch(u.color.mode){case"h":var t=e.val("a");y.call(c,Z,lr(100*(255-(t||0))/255,4));break;case"s":var n=e.val("hva"),r=new o({h:n&&n.h||0,s:100,v:null!=n?n.v:100});m.call(c,H,r.val("hex")),y.call(c,X,100-(null!=n?n.v:100)),y.call(c,Z,lr(100*(255-(n&&n.a||0))/255,4));break;case"v":var a=e.val("hsa"),i=new o({h:a&&a.h||0,s:null!=a?a.s:100,v:100});m.call(c,H,i.val("hex")),y.call(c,Z,lr(100*(255-(a&&a.a||0))/255,4));break;case"r":case"g":case"b":var s=e.val("rgba"),l=0,d=0;"r"===u.color.mode?(l=s&&s.b||0,d=s&&s.g||0):"g"===u.color.mode?(l=s&&s.b||0,d=s&&s.r||0):"b"===u.color.mode&&(l=s&&s.r||0,d=s&&s.g||0);var 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y=function(t){function n(t,a){var i;return r(this,n),(i=u(this,l(n).call(this,e.PATHSEG_LINETO_VERTICAL_ABS,"V",t)))._y=a,i}return s(n,e),i(n,[{key:"toString",value:function(){return"[object SVGPathSegLinetoVerticalAbs]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._y)}}]),n}();Object.defineProperty(y.prototype,"y",{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0});var b=function(t){function n(t,a){var i;return r(this,n),(i=u(this,l(n).call(this,e.PATHSEG_LINETO_VERTICAL_REL,"v",t)))._y=a,i}return s(n,e),i(n,[{key:"toString",value:function(){return"[object SVGPathSegLinetoVerticalRel]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._y)}}]),n}();Object.defineProperty(b.prototype,"y",{get:function(){return 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w=function(t){function n(t,a,i,o,s){var c;return r(this,n),(c=u(this,l(n).call(this,e.PATHSEG_CURVETO_CUBIC_SMOOTH_REL,"s",t)))._x=a,c._y=i,c._x2=o,c._y2=s,c}return s(n,e),i(n,[{key:"toString",value:function(){return"[object SVGPathSegCurvetoCubicSmoothRel]"}},{key:"_asPathString",value:function(){return this.pathSegTypeAsLetter+" "+this._x2+" "+this._y2+" "+this._x+" "+this._y}},{key:"clone",value:function(){return new n(void 0,this._x,this._y,this._x2,this._y2)}}]),n}();Object.defineProperties(w.prototype,{x:{get:function(){return this._x},set:function(e){this._x=e,this._segmentChanged()},enumerable:!0},y:{get:function(){return this._y},set:function(e){this._y=e,this._segmentChanged()},enumerable:!0},x2:{get:function(){return this._x2},set:function(e){this._x2=e,this._segmentChanged()},enumerable:!0},y2:{get:function(){return this._y2},set:function(e){this._y2=e,this._segmentChanged()},enumerable:!0}});var S=function(t){function n(t,a,i){var o;return 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0,e,t,n,r)},SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel=function(e,t,n,r){return new w(void 0,e,t,n,r)},SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs=function(e,t){return new S(void 0,e,t)},SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel=function(e,t){return new k(void 0,e,t)},"getPathSegAtLength"in SVGPathElement.prototype||(SVGPathElement.prototype.getPathSegAtLength=function(e){if(void 0===e||!isFinite(e))throw new Error("Invalid arguments.");var t=document.createElementNS("http://www.w3.org/2000/svg","path");t.setAttribute("d",this.getAttribute("d"));var n=t.pathSegList.numberOfItems-1;if(n<=0)return 0;do{if(t.pathSegList.removeItem(n),e>t.getTotalLength())break;n--}while(n>0);return n}),window.SVGPathSeg=e,window.SVGPathSegClosePath=t,window.SVGPathSegMovetoAbs=n,window.SVGPathSegMovetoRel=a,window.SVGPathSegLinetoAbs=o,window.SVGPathSegLinetoRel=c,window.SVGPathSegCurvetoCubicAbs=d,window.SVGPathSegCurvetoCubicRel=h,window.SVGPathSegCurvetoQuadraticAbs=p,window.SVGPathSegCurvetoQuadraticRel=f,window.SVGPathSegArcAbs=g,window.SVGPathSegArcRel=m,window.SVGPathSegLinetoHorizontalAbs=v,window.SVGPathSegLinetoHorizontalRel=_,window.SVGPathSegLinetoVerticalAbs=y,window.SVGPathSegLinetoVerticalRel=b,window.SVGPathSegCurvetoCubicSmoothAbs=x,window.SVGPathSegCurvetoCubicSmoothRel=w,window.SVGPathSegCurvetoQuadraticSmoothAbs=S,window.SVGPathSegCurvetoQuadraticSmoothRel=k}if(!("SVGPathSegList"in window&&"appendItem"in window.SVGPathSegList.prototype)){var C=function(){function e(t){r(this,e),this._pathElement=t,this._list=this._parsePath(this._pathElement.getAttribute("d")),this._mutationObserverConfig={attributes:!0,attributeFilter:["d"]},this._pathElementMutationObserver=new MutationObserver(this._updateListFromPathMutations.bind(this)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)}return i(e,[{key:"_checkPathSynchronizedToList",value:function(){this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords())}},{key:"_updateListFromPathMutations",value:function(e){if(this._pathElement){var t=!1;e.forEach(function(e){"d"===e.attributeName&&(t=!0)}),t&&(this._list=this._parsePath(this._pathElement.getAttribute("d")))}}},{key:"_writeListToPath",value:function(){this._pathElementMutationObserver.disconnect(),this._pathElement.setAttribute("d",e._pathSegArrayAsString(this._list)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)}},{key:"segmentChanged",value:function(e){this._writeListToPath()}},{key:"clear",value:function(){this._checkPathSynchronizedToList(),this._list.forEach(function(e){e._owningPathSegList=null}),this._list=[],this._writeListToPath()}},{key:"initialize",value:function(e){return this._checkPathSynchronizedToList(),this._list=[e],e._owningPathSegList=this,this._writeListToPath(),e}},{key:"_checkValidIndex",value:function(e){if(isNaN(e)||e<0||e>=this.numberOfItems)throw new Error("INDEX_SIZE_ERR")}},{key:"getItem",value:function(e){return this._checkPathSynchronizedToList(),this._checkValidIndex(e),this._list[e]}},{key:"insertItemBefore",value:function(e,t){return this._checkPathSynchronizedToList(),t>this.numberOfItems&&(t=this.numberOfItems),e._owningPathSegList&&(e=e.clone()),this._list.splice(t,0,e),e._owningPathSegList=this,this._writeListToPath(),e}},{key:"replaceItem",value:function(e,t){return this._checkPathSynchronizedToList(),e._owningPathSegList&&(e=e.clone()),this._checkValidIndex(t),this._list[t]=e,e._owningPathSegList=this,this._writeListToPath(),e}},{key:"removeItem",value:function(e){this._checkPathSynchronizedToList(),this._checkValidIndex(e);var t=this._list[e];return this._list.splice(e,1),this._writeListToPath(),t}},{key:"appendItem",value:function(e){return this._checkPathSynchronizedToList(),e._owningPathSegList&&(e=e.clone()),this._list.push(e),e._owningPathSegList=this,this._writeListToPath(),e}},{key:"_parsePath",value:function(e){if(!e||!e.length)return[];var t=this,n=function(){function e(){r(this,e),this.pathSegList=[]}return i(e,[{key:"appendSegment",value:function(e){this.pathSegList.push(e)}}]),e}(),a=function(){function e(t){r(this,e),this._string=t,this._currentIndex=0,this._endIndex=this._string.length,this._previousCommand=SVGPathSeg.PATHSEG_UNKNOWN,this._skipOptionalSpaces()}return i(e,[{key:"_isCurrentSpace",value:function(){var e=this._string[this._currentIndex];return e<=" "&&(" "===e||"\n"===e||"\t"===e||"\r"===e||"\f"===e)}},{key:"_skipOptionalSpaces",value:function(){for(;this._currentIndex<this._endIndex&&this._isCurrentSpace();)this._currentIndex++;return this._currentIndex<this._endIndex}},{key:"_skipOptionalSpacesOrDelimiter",value:function(){return!(this._currentIndex<this._endIndex&&!this._isCurrentSpace()&&","!==this._string.charAt(this._currentIndex))&&(this._skipOptionalSpaces()&&this._currentIndex<this._endIndex&&","===this._string.charAt(this._currentIndex)&&(this._currentIndex++,this._skipOptionalSpaces()),this._currentIndex<this._endIndex)}},{key:"hasMoreData",value:function(){return this._currentIndex<this._endIndex}},{key:"peekSegmentType",value:function(){var e=this._string[this._currentIndex];return this._pathSegTypeFromChar(e)}},{key:"_pathSegTypeFromChar",value:function(e){switch(e){case"Z":case"z":return SVGPathSeg.PATHSEG_CLOSEPATH;case"M":return SVGPathSeg.PATHSEG_MOVETO_ABS;case"m":return SVGPathSeg.PATHSEG_MOVETO_REL;case"L":return SVGPathSeg.PATHSEG_LINETO_ABS;case"l":return SVGPathSeg.PATHSEG_LINETO_REL;case"C":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;case"c":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;case"Q":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;case"q":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;case"A":return SVGPathSeg.PATHSEG_ARC_ABS;case"a":return SVGPathSeg.PATHSEG_ARC_REL;case"H":return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;case"h":return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;case"V":return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;case"v":return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;case"S":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;case"s":return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;case"T":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;case"t":return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;default:return SVGPathSeg.PATHSEG_UNKNOWN}}},{key:"_nextCommandHelper",value:function(e,t){return("+"===e||"-"===e||"."===e||e>="0"&&e<="9")&&t!==SVGPathSeg.PATHSEG_CLOSEPATH?t===SVGPathSeg.PATHSEG_MOVETO_ABS?SVGPathSeg.PATHSEG_LINETO_ABS:t===SVGPathSeg.PATHSEG_MOVETO_REL?SVGPathSeg.PATHSEG_LINETO_REL:t:SVGPathSeg.PATHSEG_UNKNOWN}},{key:"initialCommandIsMoveTo",value:function(){if(!this.hasMoreData())return!0;var e=this.peekSegmentType();return e===SVGPathSeg.PATHSEG_MOVETO_ABS||e===SVGPathSeg.PATHSEG_MOVETO_REL}},{key:"_parseNumber",value:function(){var e=0,t=0,n=1,r=0,a=1,i=1,o=this._currentIndex;if(this._skipOptionalSpaces(),this._currentIndex<this._endIndex&&"+"===this._string.charAt(this._currentIndex)?this._currentIndex++:this._currentIndex<this._endIndex&&"-"===this._string.charAt(this._currentIndex)&&(this._currentIndex++,a=-1),!(this._currentIndex===this._endIndex||(this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")&&"."!==this._string.charAt(this._currentIndex))){for(var s=this._currentIndex;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)this._currentIndex++;if(this._currentIndex!==s)for(var 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u=t+r;if(u*=a,e&&(u*=Math.pow(10,i*e)),o!==this._currentIndex)return this._skipOptionalSpacesOrDelimiter(),u}}},{key:"_parseArcFlag",value:function(){if(!(this._currentIndex>=this._endIndex)){var e=!1,t=this._string.charAt(this._currentIndex++);if("0"===t)e=!1;else{if("1"!==t)return;e=!0}return this._skipOptionalSpacesOrDelimiter(),e}}},{key:"parseSegment",value:function(){var e=this._string[this._currentIndex],n=this._pathSegTypeFromChar(e);if(n===SVGPathSeg.PATHSEG_UNKNOWN){if(this._previousCommand===SVGPathSeg.PATHSEG_UNKNOWN)return null;if((n=this._nextCommandHelper(e,this._previousCommand))===SVGPathSeg.PATHSEG_UNKNOWN)return null}else this._currentIndex++;switch(this._previousCommand=n,n){case SVGPathSeg.PATHSEG_MOVETO_REL:return new SVGPathSegMovetoRel(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_MOVETO_ABS:return new SVGPathSegMovetoAbs(t,this._parseNumber(),this._parseNumber());case SVGPathSeg.PATHSEG_LINETO_REL:return new 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o=t[r];rn(o)||(i[r]=o,a[r]=o.getAttribute(e))}this.undoableChangeStack[n]={attrName:e,oldValues:a,elements:i}}},{key:"finishUndoableChange",value:function(){for(var e=this.undoChangeStackPointer--,t=this.undoableChangeStack[e],n=t.attrName,r=new ge("Change "+n),a=t.elements.length;a--;){var i=t.elements[a];if(!rn(i)){var o={};o[n]=t.oldValues[a],o[n]!==i.getAttribute(n)&&r.addSubCommand(new fe(i,o,n))}}return this.undoableChangeStack[e]=null,r}}]),e}(),ve=Object.freeze({HistoryEventTypes:ce,MoveElementCommand:de,InsertElementCommand:he,RemoveElementCommand:pe,ChangeElementCommand:fe,BatchCommand:ge,UndoManager:me}),_e=document.createElementNS(f.SVG,"svg"),ye=function(e,t,n){return{x:n.a*e+n.c*t+n.e,y:n.b*e+n.d*t+n.f}},be=function(e){return 1===e.a&&0===e.b&&0===e.c&&1===e.d&&0===e.e&&0===e.f},xe=function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];var r=t.reduceRight(function(e,t){return t.multiply(e)});return 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a=Math.PI/4,i=n-e,o=r-t,s=Math.atan2(o,i),l=Math.sqrt(i*i+o*o),c=Math.round(s/a)*a;return{x:e+l*Math.cos(c),y:t+l*Math.sin(c),a:c}},Ee=function(e,t){return t.x<e.x+e.width&&t.x+t.width>e.x&&t.y<e.y+e.height&&t.y+t.height>e.y},Ge=jQuery,Pe={2:["x","y"],4:["x","y"],6:["x","y","x1","y1","x2","y2"],8:["x","y","x1","y1"],10:["x","y","r1","r2","angle","largeArcFlag","sweepFlag"],12:["x"],14:["y"],16:["x","y","x2","y2"],18:["x","y"]},Ie={},Ne=function(e){Object.assign(Ie,e.ui)},Te=[],Le=!0,Me={},Oe=null,je=null,Ve=function(e){je=e,Te=[0,"ClosePath"];Ge.each(["Moveto","Lineto","CurvetoCubic","CurvetoQuadratic","Arc","LinetoHorizontal","LinetoVertical","CurvetoCubicSmooth","CurvetoQuadraticSmooth"],function(e,t){Te.push(t+"Abs"),Te.push(t+"Rel")})},Re=function(e,t,n){var r=e.pathSegList;if(I)r.insertItemBefore(t,n);else{for(var a=r.numberOfItems,i=[],o=0;o<a;o++){var s=r.getItem(o);i.push(s)}r.clear();for(var l=0;l<a;l++)l===n&&r.appendItem(t),r.appendItem(i[l])}},Be=function(e,t){var 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n=this.item,r=this.ctrlpts?[n.x+=e,n.y+=t,n.x1,n.y1,n.x2+=e,n.y2+=t]:[n.x+=e,n.y+=t];if(Ye(this.type,this.index,r),this.next&&this.next.ctrlpts){var a=this.next.item,i=[a.x,a.y,a.x1+=e,a.y1+=t,a.x2,a.y2];Ye(this.next.type,this.next.index,i)}if(this.mate){var o=this.mate.item,s=[o.x+=e,o.y+=t];Ye(this.mate.type,this.mate.index,s)}this.update(!0),this.next&&this.next.update(!0)}},{key:"setLinked",value:function(e){var t,n,r;if(2===e){if(n=1,!(t=this.next))return;r=this.item}else{if(n=2,!(t=this.prev))return;r=t.item}var a=t.item;a["x"+n]=r.x+(r.x-this.item["x"+e]),a["y"+n]=r.y+(r.y-this.item["y"+e]);var i=[a.x,a.y,a.x1,a.y1,a.x2,a.y2];Ye(t.type,t.index,i),t.update(!0)}},{key:"moveCtrl",value:function(e,t,n){var r=this.item;r["x"+e]+=t,r["y"+e]+=n;var 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if(c&&1===c.type)l.next=i[o+1],l.next.prev=l,l.mate=i[o],l.addGrip(),rn(this.first_seg)&&(this.first_seg=l);else if(c)1!==l.type&&(l.addGrip(),c&&2!==c.type&&(l.next=c,l.next.prev=l));else if(1!==l.type){var h=i[o];h.next=i[o+1],h.next.prev=h,h.addGrip(),l.addGrip(),this.first_seg||(this.first_seg=i[o])}}return this}},{key:"eachSeg",value:function(e){for(var t=this.segs.length,n=0;n<t;n++){if(!1===e.call(this.segs[n],n))break}}},{key:"addSeg",value:function(e){var t=this.segs[e];if(t.prev){var n,r,a,i=t.prev;switch(t.item.pathSegType){case 4:r=(t.item.x+i.item.x)/2,a=(t.item.y+i.item.y)/2,n=this.elem.createSVGPathSegLinetoAbs(r,a);break;case 6:var o=(i.item.x+t.item.x1)/2,s=(t.item.x1+t.item.x2)/2,l=(t.item.x2+t.item.x)/2,c=(o+s)/2,u=(s+l)/2;r=(c+u)/2;var d=(i.item.y+t.item.y1)/2,h=(t.item.y1+t.item.y2)/2,p=(t.item.y2+t.item.y)/2,f=(d+h)/2,g=(h+p)/2;a=(f+g)/2,n=this.elem.createSVGPathSegCurvetoCubicAbs(r,a,o,d,c,f);var m=[t.item.x,t.item.y,u,g,l,p];Ye(t.type,e,m)}Re(this.elem,n,e)}}},{key:"deleteSeg",value:function(e){var t=this.segs[e],n=this.elem.pathSegList;t.show(!1);var r=t.next;if(t.mate){var a=[r.item.x,r.item.y];Ye(2,r.index,a),Ye(4,t.index,a),n.removeItem(t.mate.index)}else if(t.prev)n.removeItem(e);else{var i=[r.item.x,r.item.y];Ye(2,t.next.index,i),n.removeItem(e)}}},{key:"removePtFromSelection",value:function(e){var t=this.selected_pts.indexOf(e);-1!==t&&(this.segs[e].select(!1),this.selected_pts.splice(t,1))}},{key:"clearSelection",value:function(){this.eachSeg(function(){this.select(!1)}),this.selected_pts=[]}},{key:"storeD",value:function(){this.last_d=this.elem.getAttribute("d")}},{key:"show",value:function(e){return this.eachSeg(function(){this.show(e)}),e&&this.selectPt(this.first_seg.index),this}},{key:"movePts",value:function(e,t){for(var n=this.selected_pts.length;n--;){this.segs[this.selected_pts[n]].move(e,t)}}},{key:"moveCtrl",value:function(e,t){var n=this.segs[this.selected_pts[0]];n.moveCtrl(this.dragctrl,e,t),Le&&n.setLinked(this.dragctrl)}},{key:"setSegType",value:function(e){this.storeD();for(var t,n=this.selected_pts.length;n--;){var r=this.selected_pts[n],a=this.segs[r],i=a.prev;if(i){if(!e)t="Toggle Path Segment Type",e=6===a.type?4:6;e=Number(e);var o=a.item.x,s=a.item.y,l=i.item.x,c=i.item.y,u=void 0;switch(e){case 6:if(a.olditem){var d=a.olditem;u=[o,s,d.x1,d.y1,d.x2,d.y2]}else{var h=o-l,p=s-c;u=[o,s,l+h/3,c+p/3,o-h/3,s-p/3]}break;case 4:u=[o,s],a.olditem=a.item}a.setType(e,u)}}Oe.endChanges(t)}},{key:"selectPt",value:function(e,t){this.clearSelection(),rn(e)&&this.eachSeg(function(t){this.prev&&(e=t)}),this.addPtsToSelection(e),t&&(this.dragctrl=t,Le&&this.segs[e].setLinked(t))}},{key:"update",value:function(){var e=this.elem;return Kt(e)?(this.matrix=Ce(e),this.imatrix=this.matrix.inverse()):(this.matrix=null,this.imatrix=null),this.eachSeg(function(t){this.item=e.pathSegList.getItem(t),this.update()}),this}},{key:"endChanges",value:function(e){V()&&je.resetD(this.elem);var t=new fe(this.elem,{d:this.last_d},e);je.endChanges({cmd:t,elem:this.elem})}},{key:"addPtsToSelection",value:function(t){Array.isArray(t)||(t=[t]);for(var n=0;n<t.length;n++){var r=t[n];this.segs[r].ptgrip&&!this.selected_pts.includes(r)&&r>=0&&this.selected_pts.push(r)}this.selected_pts.sort();var a=this.selected_pts.length,i=[];for(i.length=a;a--;){var o=this.selected_pts[a],s=this.segs[o];s.select(!0),i[a]=s.ptgrip}var l=e.subpathIsClosed(this.selected_pts[0]);je.addPtsToSelection({grips:i,closedSubpath:l})}}]),e}();Ke.subpathIsClosed=function(e){var t=!1;return Oe.eachSeg(function(n){return n<=e||2!==this.type&&(1!==this.type||(t=!0,!1))}),t};var Ze,$e,Je,et,tt,nt=function(e){var t=Me[e.id];return t||(t=Me[e.id]=new 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n=e.pathSegList,r=n.numberOfItems,a=0,i=0,o="",s=null,l=0;l<r;++l){var c=n.getItem(l),u=c.x||0,d=c.y||0,h=c.x1||0,p=c.y1||0,f=c.x2||0,g=c.y2||0,m=c.pathSegType,v=ot[m]["to"+(t?"Lower":"Upper")+"Case"]();switch(m){case 1:o+="z",s&&!t&&(a=s[0],i=s[1]);break;case 12:u-=a;case 13:t?(a+=u,v="l"):(a=u+=a,v="L"),o+=lt(v,[[u,i]]);break;case 14:d-=i;case 15:t?(i+=d,v="l"):(i=d+=i,v="L"),o+=lt(v,[[a,d]]);break;case 2:case 4:case 18:u-=a,d-=i;case 5:case 3:case 19:t?(a+=u,i+=d):(a=u+=a,i=d+=i),2!==m&&3!==m||(s=[a,i]),o+=lt(v,[[u,d]]);break;case 6:u-=a,h-=a,f-=a,d-=i,p-=i,g-=i;case 7:t?(a+=u,i+=d):(h+=a,f+=a,p+=i,g+=i,a=u+=a,i=d+=i),o+=lt(v,[[h,p],[f,g],[u,d]]);break;case 8:u-=a,h-=a,d-=i,p-=i;case 9:t?(a+=u,i+=d):(h+=a,p+=i,a=u+=a,i=d+=i),o+=lt(v,[[h,p],[u,d]]);break;case 10:u-=a,d-=i;case 11:t?(a+=u,i+=d):(a=u+=a,i=d+=i),o+=lt(v,[[c.r1,c.r2]],[c.angle,c.largeArcFlag?1:0,c.sweepFlag?1:0],[u,d]);break;case 16:u-=a,f-=a,d-=i,g-=i;case 17:t?(a+=u,i+=d):(f+=a,g+=i,a=u+=a,i=d+=i),o+=lt(v,[[f,g],[u,d]])}}return o};function lt(e,t,n,r){Ge.each(t,function(e,n){t[e]=ae(n)});var a=e+t.join(" ");return n&&(a+=" "+n.join(" ")),r&&(a+=" "+ae(r)),a}var ct,ut,dt,ht,pt,ft=(dt=!1,ht=null,pt=!1,{mouseDown:function(e,t,n,r){var a;if("path"!==je.getCurrentMode()){if(Oe){var i;if(Oe.storeD(),"pathpointgrip_"===(a=e.target.id).substr(0,14)){i=Oe.cur_pt=parseInt(a.substr(14)),Oe.dragging=[n,r];var o=Oe.segs[i];e.shiftKey?o.selected?Oe.removePtFromSelection(i):Oe.addPtsToSelection(i):((Oe.selected_pts.length<=1||!o.selected)&&Oe.clearSelection(),Oe.addPtsToSelection(i))}else if(a.startsWith("ctrlpointgrip_")){Oe.dragging=[n,r];var s=a.split("_")[1].split("c");i=Number(s[0]);var l=Number(s[1]);Oe.selectPt(i,l)}if(!Oe.dragging){var c=je.getRubberBox();rn(c)&&(c=je.setRubberBox(je.selectorManager.getRubberBandBox()));var u=je.getCurrentZoom();Jt(c,{x:n*u,y:r*u,width:0,height:0,display:"inline"},100)}}}else{var d=n,h=r,p=je.getCurrentZoom(),g=d/p,m=h/p,v=$t("path_stretch_line");ct=[g,m],je.getGridSnapping()&&(g=tn(g),m=tn(m),d=tn(d),h=tn(h)),v||(v=document.createElementNS(f.SVG,"path"),Jt(v,{id:"path_stretch_line",stroke:"#22C","stroke-width":"0.5",fill:"none"}),v=$t("selectorParentGroup").appendChild(v)),v.setAttribute("display","inline");var _,y=je.getDrawnPath();if(y){for(var b=y.pathSegList,x=b.numberOfItems,w=6/p,S=!1;x;){x--;var k=b.getItem(x),C=k.x,A=k.y;if(g>=C-w&&g<=C+w&&m>=A-w&&m<=A+w){S=!0;break}}a=je.getId(),rt(a);var E,G,P=$t(a),I=b.numberOfItems;if(S){if(x<=1&&I>=2){var N=b.getItem(0).x,T=b.getItem(0).y;E=4===(G=v.pathSegList.getItem(1)).pathSegType?y.createSVGPathSegLinetoAbs(N,T):y.createSVGPathSegCurvetoCubicAbs(N,T,G.x1/p,G.y1/p,N,T);var L=y.createSVGPathSegClosePath();b.appendItem(E),b.appendItem(L)}else if(I<3)return!1;if(Ge(v).remove(),je.setDrawnPath(null),je.setStarted(!1),dt){Oe.matrix&&je.remapElement(P,{},Oe.matrix.inverse());var M=P.getAttribute("d"),O=Ge(Oe.elem).attr("d");return Ge(Oe.elem).attr("d",O+M),Ge(P).remove(),Oe.matrix&&it(),Ve(),ft.toEditMode(Oe.elem),Oe.selectPt(),!1}}else{if(!Ge.contains(je.getContainer(),je.getMouseTarget(e)))return!1;var j=y.pathSegList.numberOfItems,V=y.pathSegList.getItem(j-1),R=V.x,B=V.y;if(e.shiftKey){var D=Ae(R,B,g,m);g=D.x,m=D.y}E=4===(G=v.pathSegList.getItem(1)).pathSegType?y.createSVGPathSegLinetoAbs(je.round(g),je.round(m)):y.createSVGPathSegCurvetoCubicAbs(je.round(g),je.round(m),G.x1/p,G.y1/p,G.x2/p,G.y2/p),y.pathSegList.appendItem(E),g*=p,m*=p,v.setAttribute("d",["M",g,m,g,m].join(" ")),_=j,dt&&(_+=Oe.segs.length),Ue(_,g,m)}}else{var U="M"+g+","+m+" ";je.setDrawnPath(je.addSVGElementFromJson({element:"path",curStyles:!0,attr:{d:U,id:je.getNextId(),opacity:je.getOpacity()/2}})),v.setAttribute("d",["M",d,h,d,h].join(" ")),_=dt?Oe.segs.length:0,Ue(_,d,h)}}},mouseMove:function(e,t){var n=je.getCurrentZoom();pt=!0;var r=je.getDrawnPath();if("path"!==je.getCurrentMode())if(Oe.dragging){var a=De({x:Oe.dragging[0],y:Oe.dragging[1]},Oe),i=De({x:e,y:t},Oe),o=i.x-a.x,s=i.y-a.y;Oe.dragging=[e,t],Oe.dragctrl?Oe.moveCtrl(o,s):Oe.movePts(o,s)}else Oe.selected_pts=[],Oe.eachSeg(function(e){if(this.next||this.prev){var t=je.getRubberBox().getBBox(),n=Be(this),r={x:n.x,y:n.y,width:0,height:0},a=Ee(t,r);this.select(a),a&&Oe.selected_pts.push(this.index)}});else{if(!r)return;var l=r.pathSegList,c=l.numberOfItems-1;if(ct){var u=He("1c1"),d=He("0c2");u.setAttribute("cx",e),u.setAttribute("cy",t),u.setAttribute("display","inline");var h=ct[0],p=ct[1],f=h+(h-e/n),g=p+(p-t/n);d.setAttribute("cx",f*n),d.setAttribute("cy",g*n),d.setAttribute("display","inline");var m=ze(1);if(Jt(m,{x1:e,y1:t,x2:f*n,y2:g*n,display:"inline"}),0===c)ut=[e,t];else{var v=l.getItem(c-1),_=v.x,y=v.y;6===v.pathSegType?(_+=_-v.x2,y+=y-v.y2):ut&&(_=ut[0]/n,y=ut[1]/n),Ye(6,c,[h,p,_,y,f,g],r)}}else{var b=$t("path_stretch_line");if(b){var x=l.getItem(c);if(6===x.pathSegType){var w=x.x+(x.x-x.x2),S=x.y+(x.y-x.y2);Ye(6,1,[e,t,w*n,S*n,e,t],b)}else ut?Ye(6,1,[e,t,ut[0],ut[1],e,t],b):Ye(4,1,[e,t],b)}}}},mouseUp:function(e,t,n,r){var a=je.getDrawnPath();if("path"===je.getCurrentMode())return ct=null,a||(t=$t(je.getId()),je.setStarted(!1),ut=null),{keep:!0,element:t};var i=je.getRubberBox();if(Oe.dragging){var o=Oe.cur_pt;Oe.dragging=!1,Oe.dragctrl=!1,Oe.update(),pt&&Oe.endChanges("Move path point(s)"),e.shiftKey||pt||Oe.selectPt(o)}else i&&"none"!==i.getAttribute("display")?(i.setAttribute("display","none"),i.getAttribute("width")<=2&&i.getAttribute("height")<=2&&ft.toSelectMode(e.target)):ft.toSelectMode(e.target);pt=!1},toEditMode:function(e){Oe=nt(e),je.setCurrentMode("pathedit"),je.clearSelection(),Oe.show(!0).update(),Oe.oldbbox=Bt(Oe.elem),dt=!1},toSelectMode:function(e){var t=e===Oe.elem;je.setCurrentMode("select"),Oe.show(!1),ht=!1,je.clearSelection(),Oe.matrix&&it(),t&&(je.call("selected",[e]),je.addToSelection([e],!0))},addSubPath:function(e){e?(je.setCurrentMode("path"),dt=!0):(ft.clear(!0),ft.toEditMode(Oe.elem))},select:function(e){ht===e?(ft.toEditMode(e),je.setCurrentMode("pathedit")):ht=e},reorient:function(){var e=je.getSelectedElements()[0];if(e&&0!==Kt(e)){var t=new ge("Reorient path"),n={d:e.getAttribute("d"),transform:e.getAttribute("transform")};t.addSubCommand(new fe(e,n)),je.clearSelection(),this.resetOrientation(e),je.addCommandToHistory(t),nt(e).show(!1).matrix=null,this.clear(),je.addToSelection([e],!0),je.call("changed",je.getSelectedElements())}},clear:function(e){var t=je.getDrawnPath();if(ht=null,t){var 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";break;case 3:case 5:case 19:case 2:case 4:case 18:te+=re.x+","+re.y+" ";break;case 7:case 6:te+=re.x1+","+re.y1+" "+re.x2+","+re.y2+" "+re.x+","+re.y+" ";break;case 9:case 8:te+=re.x1+","+re.y1+" "+re.x+","+re.y+" ";break;case 11:case 10:te+=re.r1+","+re.r2+" "+re.angle+" "+Number(re.largeArcFlag)+" "+Number(re.sweepFlag)+" "+re.x+","+re.y+" ";break;case 17:case 16:te+=re.x2+","+re.y2+" "+re.x+","+re.y+" "}}e.setAttribute("d",te)}},er=q(jQuery),tr=function(e,t,n){var r=Zt(e).firstChild,a=$(r),i=qn.getSVGRoot().createSVGTransform();i.setTranslate(t,n),a.appendItem(i),nr(r)},nr=function e(t){if(rn(t))return null;if("svg"===t.nodeName&&navigator.userAgent.includes("Firefox/20"))return null;var n=qn.getSVGRoot(),r=$(t);if(r&&r.numberOfItems>0){for(var a=r.numberOfItems,i=a;a--;){var o=r.getItem(a);if(0===o.type)r.removeItem(a);else if(1===o.type){if(be(o.matrix)){if(1===i)return t.removeAttribute("transform"),null;r.removeItem(a)}}else 4===o.type&&0===o.angle&&r.removeItem(a)}if(1===r.numberOfItems&&Kt(t))return null}if(!r||0===r.numberOfItems)return t.setAttribute("transform",""),t.removeAttribute("transform"),null;if(r){for(var s=[],l=r.numberOfItems;l--;){var c=r.getItem(l);1===c.type?s.push([c.matrix,l]):s.length&&(s=[])}if(2===s.length){var u=n.createSVGTransformFromMatrix(xe(s[1][0],s[0][0]));r.removeItem(s[0][1]),r.removeItem(s[1][1]),r.insertItemBefore(u,s[1][1])}if((l=r.numberOfItems)>=2&&1===r.getItem(l-2).type&&2===r.getItem(l-1).type){var d=n.createSVGTransform(),h=xe(r.getItem(l-2).matrix,r.getItem(l-1).matrix);d.setMatrix(h),r.removeItem(l-2),r.removeItem(l-2),r.appendItem(d)}}switch(t.tagName){case"line":case"polyline":case"polygon":case"path":break;default:if(1===r.numberOfItems&&1===r.getItem(0).type||2===r.numberOfItems&&1===r.getItem(0).type&&4===r.getItem(0).type)return null}var p,g,m=er(t).data("gsvg"),v=new ge("Transform"),_={},y=null,b=[];switch(t.tagName){case"line":b=["x1","y1","x2","y2"];break;case"circle":b=["cx","cy","r"];break;case"ellipse":b=["cx","cy","rx","ry"];break;case"foreignObject":case"rect":case"image":b=["width","height","x","y"];break;case"use":case"text":case"tspan":b=["x","y"];break;case"polygon":case"polyline":(y={}).points=t.getAttribute("points");var x=t.points,w=x.numberOfItems;_.points=new Array(w);for(var S=0;S<w;++S){var k=x.getItem(S);_.points[S]={x:k.x,y:k.y}}break;case"path":(y={}).d=t.getAttribute("d"),_.d=t.getAttribute("d")}if(b.length?(_=er(t).attr(b),er.each(_,function(e,t){_[e]=se(e,t)})):m&&(_={x:er(m).attr("x")||0,y:er(m).attr("y")||0}),rn(y)&&(y=er.extend(!0,{},_),er.each(y,function(e,t){y[e]=se(e,t)})),y.transform=qn.getStartTransform()||"","g"===t.tagName&&!m||"a"===t.tagName){var C=Bt(t);p={x:C.x+C.width/2,y:C.y+C.height/2},g=ye(C.x+C.width/2,C.y+C.height/2,ke(r).matrix);var A=Kt(t);if(A){var E,G=A*Math.PI/180;E=Math.abs(G)>1e-10?Math.sin(G)/(1-Math.cos(G)):2/G;for(var P=0;P<r.numberOfItems;++P){var I=r.getItem(P);if(4===I.type){var N=I.matrix;p.y=(E*N.e+N.f)/2,p.x=(N.e-E*N.f)/2,r.removeItem(P);break}}}var T,L,M=r.numberOfItems,O=0,j=0,R=0;if(M&&(T=r.getItem(0).matrix),M>=3&&3===r.getItem(M-2).type&&2===r.getItem(M-3).type&&2===r.getItem(M-1).type){R=3;for(var B=r.getItem(M-3).matrix,D=r.getItem(M-2).matrix,U=r.getItem(M-1).matrix,F=t.childNodes,H=F.length;H--;){var z=F.item(H);if(O=0,j=0,1===z.nodeType){var q=$(z);if(!q)continue;var Y=ke(q).matrix,W=Kt(z);if(L=qn.getStartTransform(),qn.setStartTransform(z.getAttribute("transform")),W||we(q)){var X=n.createSVGTransform();X.setMatrix(xe(B,D,U,Y)),q.clear(),q.appendItem(X)}else{var Q=xe(Y.inverse(),U,Y),K=n.createSVGMatrix();K.e=-Q.e,K.f=-Q.f;var Z=xe(K.inverse(),Y.inverse(),B,D,U,Y,Q.inverse()),J=n.createSVGTransform(),ee=n.createSVGTransform(),te=n.createSVGTransform();J.setTranslate(Q.e,Q.f),ee.setScale(Z.a,Z.d),te.setTranslate(K.e,K.f),q.appendItem(te),q.appendItem(ee),q.appendItem(J)}v.addSubCommand(e(z)),qn.setStartTransform(L)}}r.removeItem(M-1),r.removeItem(M-2),r.removeItem(M-3)}else if(M>=3&&1===r.getItem(M-1).type){R=3;var ne=ke(r).matrix,re=n.createSVGTransform();re.setMatrix(ne),r.clear(),r.appendItem(re)}else if((1===M||M>1&&3!==r.getItem(1).type)&&2===r.getItem(0).type){R=2;var ae=ke(r).matrix;r.removeItem(0);var ie=ke(r).matrix.inverse(),oe=xe(ie,ae);if(O=oe.e,j=oe.f,0!==O||0!==j){for(var le=t.childNodes,ce=le.length,ue=[];ce--;){var de=le.item(ce);if(1===de.nodeType){if(de.getAttribute("clip-path")){var he=de.getAttribute("clip-path");ue.includes(he)||(tr(he,O,j),ue.push(he))}L=qn.getStartTransform(),qn.setStartTransform(de.getAttribute("transform"));var pe=$(de);if(pe){var me=n.createSVGTransform();me.setTranslate(O,j),pe.numberOfItems?pe.insertItemBefore(me,0):pe.appendItem(me),v.addSubCommand(e(de));for(var ve=t.getElementsByTagNameNS(f.SVG,"use"),_e="#"+de.id,Se=ve.length;Se--;){var Ce=ve.item(Se);if(_e===Mt(Ce)){var Ae=n.createSVGTransform();Ae.setTranslate(-O,-j),$(Ce).insertItemBefore(Ae,0),v.addSubCommand(e(Ce))}}qn.setStartTransform(L)}}}qn.setStartTransform(L)}}else{if(1!==M||1!==r.getItem(0).type||A){if(A){var Ee=n.createSVGTransform();Ee.setRotate(A,g.x,g.y),r.numberOfItems?r.insertItemBefore(Ee,0):r.appendItem(Ee)}return 0===r.numberOfItems&&t.removeAttribute("transform"),null}R=1;for(var Ge=r.getItem(0).matrix,Pe=t.childNodes,Ie=Pe.length;Ie--;){var Ne=Pe.item(Ie);if(1===Ne.nodeType){L=qn.getStartTransform(),qn.setStartTransform(Ne.getAttribute("transform"));var Te=$(Ne);if(!Te)continue;var Le=xe(Ge,ke(Te).matrix),Me=n.createSVGTransform();Me.setMatrix(Le),Te.clear(),Te.appendItem(Me,0),v.addSubCommand(e(Ne)),qn.setStartTransform(L);var Oe=Ne.getAttribute("stroke-width");if("none"!==Ne.getAttribute("stroke")&&!isNaN(Oe)){var je=(Math.abs(Le.a)+Math.abs(Le.d))/2;Ne.setAttribute("stroke-width",Oe*je)}}}r.clear()}if(2===R){if(A){g={x:p.x+T.e,y:p.y+T.f};var Ve=n.createSVGTransform();Ve.setRotate(A,g.x,g.y),r.numberOfItems?r.insertItemBefore(Ve,0):r.appendItem(Ve)}}else if(3===R){var Re=ke(r).matrix,Be=n.createSVGTransform();Be.setRotate(A,p.x,p.y);var De=Be.matrix,Ue=n.createSVGTransform();Ue.setRotate(A,g.x,g.y);var Fe=Ue.matrix.inverse(),He=Re.inverse(),ze=xe(He,Fe,De,Re);if(O=ze.e,j=ze.f,0!==O||0!==j)for(var qe=t.childNodes,Ye=qe.length;Ye--;){var We=qe.item(Ye);if(1===We.nodeType){L=qn.getStartTransform(),qn.setStartTransform(We.getAttribute("transform"));var Xe=$(We),Qe=n.createSVGTransform();Qe.setTranslate(O,j),Xe.numberOfItems?Xe.insertItemBefore(Qe,0):Xe.appendItem(Qe),v.addSubCommand(e(We)),qn.setStartTransform(L)}}A&&(r.numberOfItems?r.insertItemBefore(Ue,0):r.appendItem(Ue))}}else{var Ke,Ze=Bt(t);if(!Ze&&"path"!==t.tagName)return null;var $e=Kt(t);if($e){p={x:Ze.x+Ze.width/2,y:Ze.y+Ze.height/2},g=ye(Ze.x+Ze.width/2,Ze.y+Ze.height/2,ke(r).matrix);for(var Je=$e*Math.PI/180,et=Math.abs(Je)>1e-10?Math.sin(Je)/(1-Math.cos(Je)):2/Je,tt=0;tt<r.numberOfItems;++tt){var nt=r.getItem(tt);if(4===nt.type){var rt=nt.matrix;p.y=(et*rt.e+rt.f)/2,p.x=(rt.e-et*rt.f)/2,r.removeItem(tt);break}}}var at=0,it=r.numberOfItems;if(!V()){var ot=t.getAttribute("fill");if(ot&&ot.startsWith("url(")){var st=Zt(ot),lt="pattern";if(st.tagName!==lt&&(lt="gradient"),"userSpaceOnUse"===st.getAttribute(lt+"Units")){Ke=ke(r).matrix;var ct=$(st),ut=ke(ct).matrix,dt="matrix("+[(Ke=xe(Ke,ut)).a,Ke.b,Ke.c,Ke.d,Ke.e,Ke.f].join(",")+")";st.setAttribute(lt+"Transform",dt)}}}if(it>=3&&3===r.getItem(it-2).type&&2===r.getItem(it-3).type&&2===r.getItem(it-1).type)at=3,Ke=ke(r,it-3,it-1).matrix,r.removeItem(it-1),r.removeItem(it-2),r.removeItem(it-3);else if(4===it&&1===r.getItem(it-1).type){at=3,Ke=ke(r).matrix;var ht=n.createSVGTransform();ht.setMatrix(Ke),r.clear(),r.appendItem(ht),Ke=n.createSVGMatrix()}else if((1===it||it>1&&3!==r.getItem(1).type)&&2===r.getItem(0).type){at=2;var pt=r.getItem(0).matrix,ft=ke(r,1).matrix,gt=ft.inverse();Ke=xe(gt,pt,ft),r.removeItem(0)}else{if(1!==it||1!==r.getItem(0).type||$e){if($e){var mt=n.createSVGTransform();mt.setRotate($e,g.x,g.y),r.numberOfItems?r.insertItemBefore(mt,0):r.appendItem(mt)}return 0===r.numberOfItems&&t.removeAttribute("transform"),null}switch(Ke=ke(r).matrix,t.tagName){case"line":_=er(t).attr(["x1","y1","x2","y2"]);case"polyline":case"polygon":if(_.points=t.getAttribute("points"),_.points){var vt=t.points,_t=vt.numberOfItems;_.points=new Array(_t);for(var yt=0;yt<_t;++yt){var bt=vt.getItem(yt);_.points[yt]={x:bt.x,y:bt.y}}}case"path":_.d=t.getAttribute("d"),at=1,r.clear()}}if(1!==at&&2!==at&&3!==at||Jn(t,_,Ke),2===at){if($e){we(r)||(g={x:p.x+Ke.e,y:p.y+Ke.f});var xt=n.createSVGTransform();xt.setRotate($e,g.x,g.y),r.numberOfItems?r.insertItemBefore(xt,0):r.appendItem(xt)}if("text"===t.tagName)for(var wt=t.childNodes,St=wt.length;St--;){var kt=wt.item(St);if("tspan"===kt.tagName){var Ct={x:er(kt).attr("x")||0,y:er(kt).attr("y")||0};Jn(kt,Ct,Ke)}}}else if(3===at&&$e){var At=ke(r).matrix,Et=n.createSVGTransform();Et.setRotate($e,p.x,p.y);var Gt=Et.matrix,Pt=n.createSVGTransform();Pt.setRotate($e,g.x,g.y);var It=Pt.matrix.inverse(),Nt=At.inverse(),Tt=xe(Nt,It,Gt,At);Jn(t,_,Tt),$e&&(r.numberOfItems?r.insertItemBefore(Pt,0):r.appendItem(Pt))}}return 0===r.numberOfItems&&t.removeAttribute("transform"),v.addSubCommand(new fe(t,y)),v},rr=jQuery,ar=F()?10:4,ir=function(){function e(t,n,a){r(this,e),this.id=t,this.selectedElement=n,this.locked=!0,this.selectorGroup=Yn.createSVGElement({element:"g",attr:{id:"selectorGroup"+this.id}}),this.selectorRect=this.selectorGroup.appendChild(Yn.createSVGElement({element:"path",attr:{id:"selectedBox"+this.id,fill:"none",stroke:"#22C","stroke-width":"1","stroke-dasharray":"5,5",style:"pointer-events:none"}})),this.gripCoords={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.reset(this.selectedElement,a)}return i(e,[{key:"reset",value:function(e,t){this.locked=!0,this.selectedElement=e,this.resize(t),this.selectorGroup.setAttribute("display","inline")}},{key:"showGrips",value:function(t){var n=t?"inline":"none";Xn.selectorGripsGroup.setAttribute("display",n);var r=this.selectedElement;this.hasGrips=t,r&&t&&(this.selectorGroup.append(Xn.selectorGripsGroup),e.updateGripCursors(Kt(r)))}},{key:"resize",value:function(e){var t=this.selectorRect,n=Xn,r=n.selectorGrips,a=this.selectedElement,i=a.getAttribute("stroke-width"),o=Yn.getCurrentZoom(),s=1/o;"none"===a.getAttribute("stroke")||isNaN(i)||(s+=i/2);var l=a.tagName;"text"===l&&(s+=2/o);var c=$(a),u=ke(c).matrix;if(u.e*=o,u.f*=o,e||(e=Bt(a)),"g"===l&&!rr.data(a,"gsvg")){var h=Yt([a.childNodes]);h&&(e=h)}var p=e.x,f=e.y,g=e.width,m=e.height;s*=o;var v=Se(p*o,f*o,g*o,m*o,u),_=v.aabox,y=_.x-s,b=_.y-s,x=_.width+2*s,w=_.height+2*s,S=y+x/2,k=b+w/2,C=Kt(a);if(C){var A=Yn.svgRoot().createSVGTransform();A.setRotate(-C,S,k);var E=A.matrix;v.tl=ye(v.tl.x,v.tl.y,E),v.tr=ye(v.tr.x,v.tr.y,E),v.bl=ye(v.bl.x,v.bl.y,E),v.br=ye(v.br.x,v.br.y,E);var G=v.tl,P=G.x,I=G.y,N=G.x,T=G.y,L=Math.min,M=Math.max;y=P=L(P,L(v.tr.x,L(v.bl.x,v.br.x)))-s,b=I=L(I,L(v.tr.y,L(v.bl.y,v.br.y)))-s,x=(N=M(N,M(v.tr.x,M(v.bl.x,v.br.x)))+s)-P,w=(T=M(T,M(v.tr.y,M(v.bl.y,v.br.y)))+s)-I}var O="M"+y+","+b+" L"+(y+x)+","+b+" "+(y+x)+","+(b+w)+" "+y+","+(b+w)+"z";t.setAttribute("d",O);var j=C?"rotate("+[C,S,k].join(",")+")":"";this.selectorGroup.setAttribute("transform",j),this.gripCoords={nw:[y,b],ne:[y+x,b],sw:[y,b+w],se:[y+x,b+w],n:[y+x/2,b],w:[y,b+w/2],e:[y+x,b+w/2],s:[y+x/2,b+w]},Object.entries(this.gripCoords).forEach(function(e){var t=d(e,2),n=t[0],a=t[1];r[n].setAttribute("cx",a[0]),r[n].setAttribute("cy",a[1])}),n.rotateGripConnector.setAttribute("x1",y+x/2),n.rotateGripConnector.setAttribute("y1",b),n.rotateGripConnector.setAttribute("x2",y+x/2),n.rotateGripConnector.setAttribute("y2",b-5*ar),n.rotateGrip.setAttribute("cx",y+x/2),n.rotateGrip.setAttribute("cy",b-5*ar)}}]),e}();ir.updateGripCursors=function(e){var t=Object.keys(Xn.selectorGrips),n=Math.round(e/45);for(n<0&&(n+=8);n>0;)t.push(t.shift()),n--;Object.values(Xn.selectorGrips).forEach(function(e,n){e.setAttribute("style","cursor:"+t[n]+"-resize")})};var or=function(){function t(){r(this,t),this.selectorParentGroup=null,this.rubberBandBox=null,this.selectors=[],this.selectorMap={},this.selectorGrips={nw:null,n:null,ne:null,e:null,se:null,s:null,sw:null,w:null},this.selectorGripsGroup=null,this.rotateGripConnector=null,this.rotateGrip=null,this.initGroup()}return i(t,[{key:"initGroup",value:function(){var e=this;if(this.selectorParentGroup&&this.selectorParentGroup.parentNode&&this.selectorParentGroup.remove(),this.selectorParentGroup=Yn.createSVGElement({element:"g",attr:{id:"selectorParentGroup"}}),this.selectorGripsGroup=Yn.createSVGElement({element:"g",attr:{display:"none"}}),this.selectorParentGroup.append(this.selectorGripsGroup),Yn.svgRoot().append(this.selectorParentGroup),this.selectorMap={},this.selectors=[],this.rubberBandBox=null,Object.keys(this.selectorGrips).forEach(function(t){var n=Yn.createSVGElement({element:"circle",attr:{id:"selectorGrip_resize_"+t,fill:"#22C",r:ar,style:"cursor:"+t+"-resize","stroke-width":2,"pointer-events":"all"}});rr.data(n,"dir",t),rr.data(n,"type","resize"),e.selectorGrips[t]=e.selectorGripsGroup.appendChild(n)}),this.rotateGripConnector=this.selectorGripsGroup.appendChild(Yn.createSVGElement({element:"line",attr:{id:"selectorGrip_rotateconnector",stroke:"#22C","stroke-width":"1"}})),this.rotateGrip=this.selectorGripsGroup.appendChild(Yn.createSVGElement({element:"circle",attr:{id:"selectorGrip_rotate",fill:"lime",r:ar,stroke:"#22C","stroke-width":2,style:"cursor:url("+Wn.imgPath+"rotate.png) 12 12, auto;"}})),rr.data(this.rotateGrip,"type","rotate"),!rr("#canvasBackground").length){var 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ir(r,t,n),this.selectorParentGroup.append(this.selectors[r].selectorGroup),this.selectorMap[t.id]=this.selectors[r],this.selectors[r]}},{key:"releaseSelector",value:function(e){if(!rn(e)){var t=this.selectors.length,n=this.selectorMap[e.id];n.locked||console.log("WARNING! selector was released but was already unlocked");for(var r=0;r<t;++r)if(this.selectors[r]&&this.selectors[r]===n){delete this.selectorMap[e.id],n.locked=!1,n.selectedElement=null,n.showGrips(!1);try{n.selectorGroup.setAttribute("display","none")}catch(e){}break}}}},{key:"getRubberBandBox",value:function(){return 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diff --git a/dist/index-umd.min.js.map b/dist/index-umd.min.js.map
index d2f2b551..4aae17d2 100644
--- a/dist/index-umd.min.js.map
+++ b/dist/index-umd.min.js.map
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break;\n  case 'touchmove': type = 'mousemove'; break;\n  case 'touchend': type = 'mouseup'; break;\n  default: return;\n  }\n\n  const {screenX, screenY, clientX, clientY} = first;\n  const simulatedEvent = new MouseEvent(type, {\n    // Event interface\n    bubbles: true,\n    cancelable: true,\n    // UIEvent interface\n    view: window,\n    detail: 1, // click count\n    // MouseEvent interface (customized)\n    screenX, screenY, clientX, clientY,\n    // MouseEvent interface (defaults) - these could be removed\n    ctrlKey: false,\n    altKey: false,\n    shiftKey: false,\n    metaKey: false,\n    button: 0, // main button (usually left)\n    relatedTarget: null\n  });\n  if (changedTouches.length < 2) {\n    first.target.dispatchEvent(simulatedEvent);\n    ev.preventDefault();\n  }\n}\n\ndocument.addEventListener('touchstart', touchHandler, true);\ndocument.addEventListener('touchmove', touchHandler, true);\ndocument.addEventListener('touchend', touchHandler, true);\ndocument.addEventListener('touchcancel', touchHandler, true);\n","/**\n * Namespaces or tools therefor\n * @module namespaces\n * @license MIT\n*/\n\n/**\n* Common namepaces constants in alpha order\n* @enum {string}\n* @type {PlainObject}\n* @memberof module:namespaces\n*/\nexport const NS = {\n  HTML: 'http://www.w3.org/1999/xhtml',\n  MATH: 'http://www.w3.org/1998/Math/MathML',\n  SE: 'http://svg-edit.googlecode.com',\n  SVG: 'http://www.w3.org/2000/svg',\n  XLINK: 'http://www.w3.org/1999/xlink',\n  XML: 'http://www.w3.org/XML/1998/namespace',\n  XMLNS: 'http://www.w3.org/2000/xmlns/' // see http://www.w3.org/TR/REC-xml-names/#xmlReserved\n};\n\n/**\n* @function module:namespaces.getReverseNS\n* @returns {string} The NS with key values switched and lowercase\n*/\nexport const getReverseNS = function () {\n  const reverseNS = {};\n  Object.entries(NS).forEach(([name, URI]) => {\n    reverseNS[URI] = name.toLowerCase();\n  });\n  return reverseNS;\n};\n","/* globals SVGPathSeg, SVGPathSegMovetoRel, SVGPathSegMovetoAbs,\n    SVGPathSegMovetoRel, SVGPathSegLinetoRel, SVGPathSegLinetoAbs,\n    SVGPathSegLinetoHorizontalRel, SVGPathSegLinetoHorizontalAbs,\n    SVGPathSegLinetoVerticalRel, SVGPathSegLinetoVerticalAbs,\n    SVGPathSegClosePath, SVGPathSegCurvetoCubicRel,\n    SVGPathSegCurvetoCubicAbs, SVGPathSegCurvetoCubicSmoothRel,\n    SVGPathSegCurvetoCubicSmoothAbs, SVGPathSegCurvetoQuadraticRel,\n    SVGPathSegCurvetoQuadraticAbs, SVGPathSegCurvetoQuadraticSmoothRel,\n    SVGPathSegCurvetoQuadraticSmoothAbs, SVGPathSegArcRel, SVGPathSegArcAbs */\n/**\n* SVGPathSeg API polyfill\n* https://github.com/progers/pathseg\n*\n* This is a drop-in replacement for the `SVGPathSeg` and `SVGPathSegList` APIs\n* that were removed from SVG2 ({@link https://lists.w3.org/Archives/Public/www-svg/2015Jun/0044.html}),\n* including the latest spec changes which were implemented in Firefox 43 and\n* Chrome 46.\n*/\n(() => {\nif (!('SVGPathSeg' in window)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg\n  class SVGPathSeg {\n    constructor (type, typeAsLetter, owningPathSegList) {\n      this.pathSegType = type;\n      this.pathSegTypeAsLetter = typeAsLetter;\n      this._owningPathSegList = owningPathSegList;\n    }\n    // Notify owning PathSegList on any changes so they can be synchronized back to the path element.\n    _segmentChanged () {\n      if (this._owningPathSegList) {\n        this._owningPathSegList.segmentChanged(this);\n      }\n    }\n  }\n  SVGPathSeg.prototype.classname = 'SVGPathSeg';\n\n  SVGPathSeg.PATHSEG_UNKNOWN = 0;\n  SVGPathSeg.PATHSEG_CLOSEPATH = 1;\n  SVGPathSeg.PATHSEG_MOVETO_ABS = 2;\n  SVGPathSeg.PATHSEG_MOVETO_REL = 3;\n  SVGPathSeg.PATHSEG_LINETO_ABS = 4;\n  SVGPathSeg.PATHSEG_LINETO_REL = 5;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS = 6;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL = 7;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS = 8;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL = 9;\n  SVGPathSeg.PATHSEG_ARC_ABS = 10;\n  SVGPathSeg.PATHSEG_ARC_REL = 11;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS = 12;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL = 13;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS = 14;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL = 15;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;\n\n  class SVGPathSegClosePath extends SVGPathSeg {\n    constructor (owningPathSegList) {\n      super(SVGPathSeg.PATHSEG_CLOSEPATH, 'z', owningPathSegList);\n    }\n    toString () { return '[object SVGPathSegClosePath]'; }\n    _asPathString () { return this.pathSegTypeAsLetter; }\n    clone () { return new SVGPathSegClosePath(undefined); }\n  }\n\n  class SVGPathSegMovetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_ABS, 'M', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoAbs.prototype, {\n    x: {\n      get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true\n    },\n    y: {\n      get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true\n    }\n  });\n\n  class SVGPathSegMovetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_REL, 'm', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_ABS, 'L', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_REL, 'l', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS, 'C', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicAbs(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL, 'c', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicRel(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS, 'Q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticAbs(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL, 'q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticRel(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_ABS, 'A', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcAbs(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_REL, 'a', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcRel(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoHorizontalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS, 'H', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalAbs(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalAbs.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoHorizontalRel extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL, 'h', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalRel(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalRel.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS, 'V', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalAbs(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalAbs.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalRel extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL, 'v', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalRel(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalRel.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegCurvetoCubicSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS, 'S', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL, 's', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothRel(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS, 'T', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL, 't', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  // Add createSVGPathSeg* functions to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathElement.\n  SVGPathElement.prototype.createSVGPathSegClosePath = function () { return new SVGPathSegClosePath(undefined); };\n  SVGPathElement.prototype.createSVGPathSegMovetoAbs = function (x, y) { return new SVGPathSegMovetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegMovetoRel = function (x, y) { return new SVGPathSegMovetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoAbs = function (x, y) { return new SVGPathSegLinetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoRel = function (x, y) { return new SVGPathSegLinetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicAbs(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicRel(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticAbs(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticRel(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegArcAbs = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcAbs(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegArcRel = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcRel(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs = function (x) { return new SVGPathSegLinetoHorizontalAbs(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel = function (x) { return new SVGPathSegLinetoHorizontalRel(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs = function (y) { return new SVGPathSegLinetoVerticalAbs(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel = function (y) { return new SVGPathSegLinetoVerticalRel(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothRel(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, x, y); };\n\n  if (!('getPathSegAtLength' in SVGPathElement.prototype)) {\n    // Add getPathSegAtLength to SVGPathElement.\n    // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-__svg__SVGPathElement__getPathSegAtLength\n    // This polyfill requires SVGPathElement.getTotalLength to implement the distance-along-a-path algorithm.\n    SVGPathElement.prototype.getPathSegAtLength = function (distance) {\n      if (distance === undefined || !isFinite(distance)) {\n        throw new Error('Invalid arguments.');\n      }\n\n      const measurementElement = document.createElementNS('http://www.w3.org/2000/svg', 'path');\n      measurementElement.setAttribute('d', this.getAttribute('d'));\n      let lastPathSegment = measurementElement.pathSegList.numberOfItems - 1;\n\n      // If the path is empty, return 0.\n      if (lastPathSegment <= 0) {\n        return 0;\n      }\n\n      do {\n        measurementElement.pathSegList.removeItem(lastPathSegment);\n        if (distance > measurementElement.getTotalLength()) {\n          break;\n        }\n        lastPathSegment--;\n      } while (lastPathSegment > 0);\n      return lastPathSegment;\n    };\n  }\n\n  window.SVGPathSeg = SVGPathSeg;\n  window.SVGPathSegClosePath = SVGPathSegClosePath;\n  window.SVGPathSegMovetoAbs = SVGPathSegMovetoAbs;\n  window.SVGPathSegMovetoRel = SVGPathSegMovetoRel;\n  window.SVGPathSegLinetoAbs = SVGPathSegLinetoAbs;\n  window.SVGPathSegLinetoRel = SVGPathSegLinetoRel;\n  window.SVGPathSegCurvetoCubicAbs = SVGPathSegCurvetoCubicAbs;\n  window.SVGPathSegCurvetoCubicRel = SVGPathSegCurvetoCubicRel;\n  window.SVGPathSegCurvetoQuadraticAbs = SVGPathSegCurvetoQuadraticAbs;\n  window.SVGPathSegCurvetoQuadraticRel = SVGPathSegCurvetoQuadraticRel;\n  window.SVGPathSegArcAbs = SVGPathSegArcAbs;\n  window.SVGPathSegArcRel = SVGPathSegArcRel;\n  window.SVGPathSegLinetoHorizontalAbs = SVGPathSegLinetoHorizontalAbs;\n  window.SVGPathSegLinetoHorizontalRel = SVGPathSegLinetoHorizontalRel;\n  window.SVGPathSegLinetoVerticalAbs = SVGPathSegLinetoVerticalAbs;\n  window.SVGPathSegLinetoVerticalRel = SVGPathSegLinetoVerticalRel;\n  window.SVGPathSegCurvetoCubicSmoothAbs = SVGPathSegCurvetoCubicSmoothAbs;\n  window.SVGPathSegCurvetoCubicSmoothRel = SVGPathSegCurvetoCubicSmoothRel;\n  window.SVGPathSegCurvetoQuadraticSmoothAbs = SVGPathSegCurvetoQuadraticSmoothAbs;\n  window.SVGPathSegCurvetoQuadraticSmoothRel = SVGPathSegCurvetoQuadraticSmoothRel;\n}\n\n// Checking for SVGPathSegList in window checks for the case of an implementation without the\n// SVGPathSegList API.\n// The second check for appendItem is specific to Firefox 59+ which removed only parts of the\n// SVGPathSegList API (e.g., appendItem). In this case we need to re-implement the entire API\n// so the polyfill data (i.e., _list) is used throughout.\nif (!('SVGPathSegList' in window) || !('appendItem' in window.SVGPathSegList.prototype)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSegList\n  class SVGPathSegList {\n    constructor (pathElement) {\n      this._pathElement = pathElement;\n      this._list = this._parsePath(this._pathElement.getAttribute('d'));\n\n      // Use a MutationObserver to catch changes to the path's \"d\" attribute.\n      this._mutationObserverConfig = {attributes: true, attributeFilter: ['d']};\n      this._pathElementMutationObserver = new MutationObserver(this._updateListFromPathMutations.bind(this));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n    // Process any pending mutations to the path element and update the list as needed.\n    // This should be the first call of all public functions and is needed because\n    // MutationObservers are not synchronous so we can have pending asynchronous mutations.\n    _checkPathSynchronizedToList () {\n      this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords());\n    }\n\n    _updateListFromPathMutations (mutationRecords) {\n      if (!this._pathElement) {\n        return;\n      }\n      let hasPathMutations = false;\n      mutationRecords.forEach((record) => {\n        if (record.attributeName === 'd') {\n          hasPathMutations = true;\n        }\n      });\n      if (hasPathMutations) {\n        this._list = this._parsePath(this._pathElement.getAttribute('d'));\n      }\n    }\n\n    // Serialize the list and update the path's 'd' attribute.\n    _writeListToPath () {\n      this._pathElementMutationObserver.disconnect();\n      this._pathElement.setAttribute('d', SVGPathSegList._pathSegArrayAsString(this._list));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n\n    // When a path segment changes the list needs to be synchronized back to the path element.\n    segmentChanged (pathSeg) {\n      this._writeListToPath();\n    }\n\n    clear () {\n      this._checkPathSynchronizedToList();\n\n      this._list.forEach((pathSeg) => {\n        pathSeg._owningPathSegList = null;\n      });\n      this._list = [];\n      this._writeListToPath();\n    }\n\n    initialize (newItem) {\n      this._checkPathSynchronizedToList();\n\n      this._list = [newItem];\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    _checkValidIndex (index) {\n      if (isNaN(index) || index < 0 || index >= this.numberOfItems) {\n        throw new Error('INDEX_SIZE_ERR');\n      }\n    }\n\n    getItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      return this._list[index];\n    }\n\n    insertItemBefore (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      // Spec: If the index is greater than or equal to numberOfItems, then the new item is appended to the end of the list.\n      if (index > this.numberOfItems) {\n        index = this.numberOfItems;\n      }\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.splice(index, 0, newItem);\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    replaceItem (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._checkValidIndex(index);\n      this._list[index] = newItem;\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    removeItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      const item = this._list[index];\n      this._list.splice(index, 1);\n      this._writeListToPath();\n      return item;\n    }\n\n    appendItem (newItem) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.push(newItem);\n      newItem._owningPathSegList = this;\n      // TODO: Optimize this to just append to the existing attribute.\n      this._writeListToPath();\n      return newItem;\n    }\n\n    // This closely follows SVGPathParser::parsePath from Source/core/svg/SVGPathParser.cpp.\n    _parsePath (string) {\n      if (!string || !string.length) {\n        return [];\n      }\n\n      const owningPathSegList = this;\n\n      class Builder {\n        constructor () {\n          this.pathSegList = [];\n        }\n        appendSegment (pathSeg) {\n          this.pathSegList.push(pathSeg);\n        }\n      }\n\n      class Source {\n        constructor (string) {\n          this._string = string;\n          this._currentIndex = 0;\n          this._endIndex = this._string.length;\n          this._previousCommand = SVGPathSeg.PATHSEG_UNKNOWN;\n\n          this._skipOptionalSpaces();\n        }\n        _isCurrentSpace () {\n          const character = this._string[this._currentIndex];\n          return character <= ' ' && (character === ' ' || character === '\\n' || character === '\\t' || character === '\\r' || character === '\\f');\n        }\n\n        _skipOptionalSpaces () {\n          while (this._currentIndex < this._endIndex && this._isCurrentSpace()) {\n            this._currentIndex++;\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        _skipOptionalSpacesOrDelimiter () {\n          if (this._currentIndex < this._endIndex && !this._isCurrentSpace() && this._string.charAt(this._currentIndex) !== ',') {\n            return false;\n          }\n          if (this._skipOptionalSpaces()) {\n            if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === ',') {\n              this._currentIndex++;\n              this._skipOptionalSpaces();\n            }\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        hasMoreData () {\n          return this._currentIndex < this._endIndex;\n        }\n\n        peekSegmentType () {\n          const lookahead = this._string[this._currentIndex];\n          return this._pathSegTypeFromChar(lookahead);\n        }\n\n        _pathSegTypeFromChar (lookahead) {\n          switch (lookahead) {\n          case 'Z':\n          case 'z':\n            return SVGPathSeg.PATHSEG_CLOSEPATH;\n          case 'M':\n            return SVGPathSeg.PATHSEG_MOVETO_ABS;\n          case 'm':\n            return SVGPathSeg.PATHSEG_MOVETO_REL;\n          case 'L':\n            return SVGPathSeg.PATHSEG_LINETO_ABS;\n          case 'l':\n            return SVGPathSeg.PATHSEG_LINETO_REL;\n          case 'C':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;\n          case 'c':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;\n          case 'Q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;\n          case 'q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;\n          case 'A':\n            return SVGPathSeg.PATHSEG_ARC_ABS;\n          case 'a':\n            return SVGPathSeg.PATHSEG_ARC_REL;\n          case 'H':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;\n          case 'h':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;\n          case 'V':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;\n          case 'v':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;\n          case 'S':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;\n          case 's':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;\n          case 'T':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;\n          case 't':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;\n          default:\n            return SVGPathSeg.PATHSEG_UNKNOWN;\n          }\n        }\n\n        _nextCommandHelper (lookahead, previousCommand) {\n          // Check for remaining coordinates in the current command.\n          if ((lookahead === '+' || lookahead === '-' || lookahead === '.' || (lookahead >= '0' && lookahead <= '9')) && previousCommand !== SVGPathSeg.PATHSEG_CLOSEPATH) {\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_ABS) {\n              return SVGPathSeg.PATHSEG_LINETO_ABS;\n            }\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_REL) {\n              return SVGPathSeg.PATHSEG_LINETO_REL;\n            }\n            return previousCommand;\n          }\n          return SVGPathSeg.PATHSEG_UNKNOWN;\n        }\n\n        initialCommandIsMoveTo () {\n          // If the path is empty it is still valid, so return true.\n          if (!this.hasMoreData()) {\n            return true;\n          }\n          const command = this.peekSegmentType();\n          // Path must start with moveTo.\n          return command === SVGPathSeg.PATHSEG_MOVETO_ABS || command === SVGPathSeg.PATHSEG_MOVETO_REL;\n        }\n\n        // Parse a number from an SVG path. This very closely follows genericParseNumber(...) from Source/core/svg/SVGParserUtilities.cpp.\n        // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-PathDataBNF\n        _parseNumber () {\n          let exponent = 0;\n          let integer = 0;\n          let frac = 1;\n          let decimal = 0;\n          let sign = 1;\n          let expsign = 1;\n\n          const startIndex = this._currentIndex;\n\n          this._skipOptionalSpaces();\n\n          // Read the sign.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '+') {\n            this._currentIndex++;\n          } else if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '-') {\n            this._currentIndex++;\n            sign = -1;\n          }\n\n          if (this._currentIndex === this._endIndex || ((this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') && this._string.charAt(this._currentIndex) !== '.')) {\n            // The first character of a number must be one of [0-9+-.].\n            return undefined;\n          }\n\n          // Read the integer part, build right-to-left.\n          const startIntPartIndex = this._currentIndex;\n          while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n            this._currentIndex++; // Advance to first non-digit.\n          }\n\n          if (this._currentIndex !== startIntPartIndex) {\n            let scanIntPartIndex = this._currentIndex - 1;\n            let multiplier = 1;\n            while (scanIntPartIndex >= startIntPartIndex) {\n              integer += multiplier * (this._string.charAt(scanIntPartIndex--) - '0');\n              multiplier *= 10;\n            }\n          }\n\n          // Read the decimals.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '.') {\n            this._currentIndex++;\n\n            // There must be a least one digit following the .\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              frac *= 10;\n              decimal += (this._string.charAt(this._currentIndex) - '0') / frac;\n              this._currentIndex += 1;\n            }\n          }\n\n          // Read the exponent part.\n          if (this._currentIndex !== startIndex && this._currentIndex + 1 < this._endIndex && (this._string.charAt(this._currentIndex) === 'e' || this._string.charAt(this._currentIndex) === 'E') && (this._string.charAt(this._currentIndex + 1) !== 'x' && this._string.charAt(this._currentIndex + 1) !== 'm')) {\n            this._currentIndex++;\n\n            // Read the sign of the exponent.\n            if (this._string.charAt(this._currentIndex) === '+') {\n              this._currentIndex++;\n            } else if (this._string.charAt(this._currentIndex) === '-') {\n              this._currentIndex++;\n              expsign = -1;\n            }\n\n            // There must be an exponent.\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              exponent *= 10;\n              exponent += (this._string.charAt(this._currentIndex) - '0');\n              this._currentIndex++;\n            }\n          }\n\n          let number = integer + decimal;\n          number *= sign;\n\n          if (exponent) {\n            number *= Math.pow(10, expsign * exponent);\n          }\n\n          if (startIndex === this._currentIndex) {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n\n          return number;\n        }\n\n        _parseArcFlag () {\n          if (this._currentIndex >= this._endIndex) {\n            return undefined;\n          }\n          let flag = false;\n          const flagChar = this._string.charAt(this._currentIndex++);\n          if (flagChar === '0') {\n            flag = false;\n          } else if (flagChar === '1') {\n            flag = true;\n          } else {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n          return flag;\n        }\n\n        parseSegment () {\n          const lookahead = this._string[this._currentIndex];\n          let command = this._pathSegTypeFromChar(lookahead);\n          if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n            // Possibly an implicit command. Not allowed if this is the first command.\n            if (this._previousCommand === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n            command = this._nextCommandHelper(lookahead, this._previousCommand);\n            if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n          } else {\n            this._currentIndex++;\n          }\n\n          this._previousCommand = command;\n\n          switch (command) {\n          case SVGPathSeg.PATHSEG_MOVETO_REL:\n            return new SVGPathSegMovetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_MOVETO_ABS:\n            return new SVGPathSegMovetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_REL:\n            return new SVGPathSegLinetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_ABS:\n            return new SVGPathSegLinetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:\n            return new SVGPathSegLinetoHorizontalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:\n            return new SVGPathSegLinetoHorizontalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:\n            return new SVGPathSegLinetoVerticalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:\n            return new SVGPathSegLinetoVerticalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_CLOSEPATH:\n            this._skipOptionalSpaces();\n            return new SVGPathSegClosePath(owningPathSegList);\n          case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:\n            return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:\n            return new SVGPathSegCurvetoQuadraticSmoothAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_ARC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } case SVGPathSeg.PATHSEG_ARC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } default:\n            throw new Error('Unknown path seg type.');\n          }\n        }\n      }\n\n      const builder = new Builder();\n      const source = new Source(string);\n\n      if (!source.initialCommandIsMoveTo()) {\n        return [];\n      }\n      while (source.hasMoreData()) {\n        const pathSeg = source.parseSegment();\n        if (!pathSeg) {\n          return [];\n        }\n        builder.appendSegment(pathSeg);\n      }\n\n      return builder.pathSegList;\n    }\n  }\n\n  SVGPathSegList.prototype.classname = 'SVGPathSegList';\n\n  Object.defineProperty(SVGPathSegList.prototype, 'numberOfItems', {\n    get () {\n      this._checkPathSynchronizedToList();\n      return this._list.length;\n    },\n    enumerable: true\n  });\n\n  SVGPathSegList._pathSegArrayAsString = function (pathSegArray) {\n    let string = '';\n    let first = true;\n    pathSegArray.forEach((pathSeg) => {\n      if (first) {\n        first = false;\n        string += pathSeg._asPathString();\n      } else {\n        string += ' ' + pathSeg._asPathString();\n      }\n    });\n    return string;\n  };\n\n  // Add the pathSegList accessors to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGAnimatedPathData\n  Object.defineProperties(SVGPathElement.prototype, {\n    pathSegList: {\n      get () {\n        if (!this._pathSegList) {\n          this._pathSegList = new SVGPathSegList(this);\n        }\n        return this._pathSegList;\n      },\n      enumerable: true\n    },\n    // FIXME: The following are not implemented and simply return SVGPathElement.pathSegList.\n    normalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedNormalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true}\n  });\n  window.SVGPathSegList = SVGPathSegList;\n}\n})();\n","/* globals jQuery */\n/**\n * Browser detection\n * @module browser\n * @license MIT\n *\n * @copyright 2010 Jeff Schiller, 2010 Alexis Deveria\n */\n\n// Dependencies:\n// 1) jQuery (for $.alert())\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\n\nconst $ = jQuery;\n\nconst supportsSVG_ = (function () {\nreturn !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;\n}());\n\n/**\n * @function module:browser.supportsSvg\n * @returns {boolean}\n*/\nexport const supportsSvg = () => supportsSVG_;\n\nconst {userAgent} = navigator;\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n// Note: Browser sniffing should only be used if no other detection method is possible\nconst isOpera_ = !!window.opera;\nconst isWebkit_ = userAgent.includes('AppleWebKit');\nconst isGecko_ = userAgent.includes('Gecko/');\nconst isIE_ = userAgent.includes('MSIE');\nconst isChrome_ = userAgent.includes('Chrome/');\nconst isWindows_ = userAgent.includes('Windows');\nconst isMac_ = userAgent.includes('Macintosh');\nconst isTouch_ = 'ontouchstart' in window;\n\nconst supportsSelectors_ = (function () {\nreturn !!svg.querySelector;\n}());\n\nconst supportsXpath_ = (function () {\nreturn !!document.evaluate;\n}());\n\n// segList functions (for FF1.5 and 2.0)\nconst supportsPathReplaceItem_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.replaceItem(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\nconst supportsPathInsertItemBefore_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.insertItemBefore(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\n// text character positioning (for IE9 and now Chrome)\nconst supportsGoodTextCharPos_ = (function () {\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgroot);\nsvgcontent.setAttribute('x', 5);\nsvgroot.append(svgcontent);\nconst text = document.createElementNS(NS.SVG, 'text');\ntext.textContent = 'a';\nsvgcontent.append(text);\ntry { // Chrome now fails here\n  const pos = text.getStartPositionOfChar(0).x;\n  return (pos === 0);\n} catch (err) {\n  return false;\n} finally {\n  svgroot.remove();\n}\n}());\n\nconst supportsPathBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 C0,0 10,10 10,0');\nsvgcontent.append(path);\nconst bbox = path.getBBox();\nsvgcontent.remove();\nreturn (bbox.height > 4 && bbox.height < 5);\n}());\n\n// Support for correct bbox sizing on groups with horizontal/vertical lines\nconst supportsHVLineContainerBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,0');\nconst path2 = document.createElementNS(NS.SVG, 'path');\npath2.setAttribute('d', 'M5,0 15,0');\nconst g = document.createElementNS(NS.SVG, 'g');\ng.append(path, path2);\nsvgcontent.append(g);\nconst bbox = g.getBBox();\nsvgcontent.remove();\n// Webkit gives 0, FF gives 10, Opera (correctly) gives 15\nreturn (bbox.width === 15);\n}());\n\nconst supportsEditableText_ = (function () {\n// TODO: Find better way to check support for this\nreturn isOpera_;\n}());\n\nconst supportsGoodDecimals_ = (function () {\n// Correct decimals on clone attributes (Opera < 10.5/win/non-en)\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('x', 0.1);\nconst crect = rect.cloneNode(false);\nconst retValue = (!crect.getAttribute('x').includes(','));\nif (!retValue) {\n  // Todo: i18nize or remove\n  $.alert('NOTE: This version of Opera is known to contain bugs in SVG-edit.\\n' +\n\t'Please upgrade to the <a href=\"http://opera.com\">latest version</a> in which the problems have been fixed.');\n}\nreturn retValue;\n}());\n\nconst supportsNonScalingStroke_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('style', 'vector-effect:non-scaling-stroke');\nreturn rect.style.vectorEffect === 'non-scaling-stroke';\n}());\n\nlet supportsNativeSVGTransformLists_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nconst rxform = rect.transform.baseVal;\nconst t1 = svg.createSVGTransform();\nrxform.appendItem(t1);\nconst r1 = rxform.getItem(0);\n// Todo: Do frame-independent instance checking\nreturn r1 instanceof SVGTransform && t1 instanceof SVGTransform &&\n\tr1.type === t1.type && r1.angle === t1.angle &&\n\tr1.matrix.a === t1.matrix.a &&\n\tr1.matrix.b === t1.matrix.b &&\n\tr1.matrix.c === t1.matrix.c &&\n\tr1.matrix.d === t1.matrix.d &&\n\tr1.matrix.e === t1.matrix.e &&\n\tr1.matrix.f === t1.matrix.f;\n}());\n\n// Public API\n\n/**\n * @function module:browser.isOpera\n * @returns {boolean}\n*/\nexport const isOpera = () => isOpera_;\n/**\n * @function module:browser.isWebkit\n * @returns {boolean}\n*/\nexport const isWebkit = () => isWebkit_;\n/**\n * @function module:browser.isGecko\n * @returns {boolean}\n*/\nexport const isGecko = () => isGecko_;\n/**\n * @function module:browser.isIE\n * @returns {boolean}\n*/\nexport const isIE = () => isIE_;\n/**\n * @function module:browser.isChrome\n * @returns {boolean}\n*/\nexport const isChrome = () => isChrome_;\n/**\n * @function module:browser.isWindows\n * @returns {boolean}\n*/\nexport const isWindows = () => isWindows_;\n/**\n * @function module:browser.isMac\n * @returns {boolean}\n*/\nexport const isMac = () => isMac_;\n/**\n * @function module:browser.isTouch\n * @returns {boolean}\n*/\nexport const isTouch = () => isTouch_;\n\n/**\n * @function module:browser.supportsSelectors\n * @returns {boolean}\n*/\nexport const supportsSelectors = () => supportsSelectors_;\n\n/**\n * @function module:browser.supportsXpath\n * @returns {boolean}\n*/\nexport const supportsXpath = () => supportsXpath_;\n\n/**\n * @function module:browser.supportsPathReplaceItem\n * @returns {boolean}\n*/\nexport const supportsPathReplaceItem = () => supportsPathReplaceItem_;\n\n/**\n * @function module:browser.supportsPathInsertItemBefore\n * @returns {boolean}\n*/\nexport const supportsPathInsertItemBefore = () => supportsPathInsertItemBefore_;\n\n/**\n * @function module:browser.supportsPathBBox\n * @returns {boolean}\n*/\nexport const supportsPathBBox = () => supportsPathBBox_;\n\n/**\n * @function module:browser.supportsHVLineContainerBBox\n * @returns {boolean}\n*/\nexport const supportsHVLineContainerBBox = () => supportsHVLineContainerBBox_;\n\n/**\n * @function module:browser.supportsGoodTextCharPos\n * @returns {boolean}\n*/\nexport const supportsGoodTextCharPos = () => supportsGoodTextCharPos_;\n\n/**\n* @function module:browser.supportsEditableText\n * @returns {boolean}\n*/\nexport const supportsEditableText = () => supportsEditableText_;\n\n/**\n * @function module:browser.supportsGoodDecimals\n * @returns {boolean}\n*/\nexport const supportsGoodDecimals = () => supportsGoodDecimals_;\n\n/**\n* @function module:browser.supportsNonScalingStroke\n* @returns {boolean}\n*/\nexport const supportsNonScalingStroke = () => supportsNonScalingStroke_;\n\n/**\n* @function module:browser.supportsNativeTransformLists\n* @returns {boolean}\n*/\nexport const supportsNativeTransformLists = () => supportsNativeSVGTransformLists_;\n\n/**\n * Set `supportsNativeSVGTransformLists_` to `false` (for unit testing).\n * @function module:browser.disableSupportsNativeTransformLists\n * @returns {undefined}\n*/\nexport const disableSupportsNativeTransformLists = () => {\n  supportsNativeSVGTransformLists_ = false;\n};\n","/**\n * jQuery module to work with SVG attributes\n * @module jQueryAttr\n * @license MIT\n */\n\n/**\n* This fixes `$(...).attr()` to work as expected with SVG elements.\n* Does not currently use `*AttributeNS()` since we rarely need that.\n* Adds {@link external:jQuery.fn.attr}.\n* See {@link https://api.jquery.com/attr/} for basic documentation of `.attr()`.\n*\n* Additional functionality:\n* - When getting attributes, a string that's a number is returned as type number.\n* - If an array is supplied as the first parameter, multiple values are returned\n*    as an object with values for each given attribute.\n* @function module:jQueryAttr.jQueryAttr\n* @param {external:jQuery} $ The jQuery object to which to add the plug-in\n* @returns {external:jQuery}\n*/\nexport default function ($) {\n  const proxied = $.fn.attr,\n    svgns = 'http://www.w3.org/2000/svg';\n  /**\n  * @typedef {PlainObject.<string, string|Float>} module:jQueryAttr.Attributes\n  */\n  /**\n  * @function external:jQuery.fn.attr\n  * @param {string|string[]|PlainObject.<string, string>} key\n  * @param {string} value\n  * @returns {external:jQuery|module:jQueryAttr.Attributes}\n  */\n  $.fn.attr = function (key, value) {\n    const len = this.length;\n    if (!len) { return proxied.apply(this, arguments); }\n    for (let i = 0; i < len; ++i) {\n      const elem = this[i];\n      // set/get SVG attribute\n      if (elem.namespaceURI === svgns) {\n        // Setting attribute\n        if (value !== undefined) {\n          elem.setAttribute(key, value);\n        } else if (Array.isArray(key)) {\n          // Getting attributes from array\n          const obj = {};\n          let j = key.length;\n\n          while (j--) {\n            const aname = key[j];\n            let attr = elem.getAttribute(aname);\n            // This returns a number when appropriate\n            if (attr || attr === '0') {\n              attr = isNaN(attr) ? attr : (attr - 0);\n            }\n            obj[aname] = attr;\n          }\n          return obj;\n        }\n        if (typeof key === 'object') {\n          // Setting attributes from object\n          for (const [name, val] of Object.entries(key)) {\n            elem.setAttribute(name, val);\n          }\n        // Getting attribute\n        } else {\n          let attr = elem.getAttribute(key);\n          if (attr || attr === '0') {\n            attr = isNaN(attr) ? attr : (attr - 0);\n          }\n          return attr;\n        }\n      } else {\n        return proxied.apply(this, arguments);\n      }\n    }\n    return this;\n  };\n  return $;\n}\n","/**\n * Partial polyfill of `SVGTransformList`\n * @module SVGTransformList\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\nimport {supportsNativeTransformLists} from './browser.js';\n\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\n\n// Helper function.\nfunction transformToString (xform) {\n  const m = xform.matrix;\n  let text = '';\n  switch (xform.type) {\n  case 1: // MATRIX\n    text = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n    break;\n  case 2: // TRANSLATE\n    text = 'translate(' + m.e + ',' + m.f + ')';\n    break;\n  case 3: // SCALE\n    if (m.a === m.d) {\n      text = 'scale(' + m.a + ')';\n    } else {\n      text = 'scale(' + m.a + ',' + m.d + ')';\n    }\n    break;\n  case 4: { // ROTATE\n    let cx = 0;\n    let cy = 0;\n    // this prevents divide by zero\n    if (xform.angle !== 0) {\n      const K = 1 - m.a;\n      cy = (K * m.f + m.b * m.e) / (K * K + m.b * m.b);\n      cx = (m.e - m.b * cy) / K;\n    }\n    text = 'rotate(' + xform.angle + ' ' + cx + ',' + cy + ')';\n    break;\n  }\n  }\n  return text;\n}\n\n/**\n * Map of SVGTransformList objects.\n */\nlet listMap_ = {};\n\n/**\n* @interface module:SVGTransformList.SVGEditTransformList\n* @property {Integer} numberOfItems unsigned long\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#clear\n* @returns {undefined}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#initialize\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#getItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#insertItemBefore\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#replaceItem\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#removeItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#appendItem\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#createSVGTransformFromMatrix\n* @param {SVGMatrix} matrix\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#consolidate\n* @returns {SVGTransform}\n*/\n\n/**\n* SVGTransformList implementation for Webkit.\n* These methods do not currently raise any exceptions.\n* These methods also do not check that transforms are being inserted.  This is basically\n* implementing as much of SVGTransformList that we need to get the job done.\n*/\nexport class SVGTransformList {\n  /**\n  * @param {Element} elem\n  */\n  constructor (elem) {\n    this._elem = elem || null;\n    this._xforms = [];\n    // TODO: how do we capture the undo-ability in the changed transform list?\n    this._update = function () {\n      let tstr = '';\n      // /* const concatMatrix = */ svgroot.createSVGMatrix();\n      for (let i = 0; i < this.numberOfItems; ++i) {\n        const xform = this._list.getItem(i);\n        tstr += transformToString(xform) + ' ';\n      }\n      this._elem.setAttribute('transform', tstr);\n    };\n    this._list = this;\n    this._init = function () {\n      // Transform attribute parser\n      let str = this._elem.getAttribute('transform');\n      if (!str) { return; }\n\n      // TODO: Add skew support in future\n      const re = /\\s*((scale|matrix|rotate|translate)\\s*\\(.*?\\))\\s*,?\\s*/;\n      let m = true;\n      while (m) {\n        m = str.match(re);\n        str = str.replace(re, '');\n        if (m && m[1]) {\n          const x = m[1];\n          const bits = x.split(/\\s*\\(/);\n          const name = bits[0];\n          const valBits = bits[1].match(/\\s*(.*?)\\s*\\)/);\n          valBits[1] = valBits[1].replace(/(\\d)-/g, '$1 -');\n          const valArr = valBits[1].split(/[, ]+/);\n          const letters = 'abcdef'.split('');\n          const mtx = svgroot.createSVGMatrix();\n          Object.values(valArr).forEach(function (item, i) {\n            valArr[i] = parseFloat(item);\n            if (name === 'matrix') {\n              mtx[letters[i]] = valArr[i];\n            }\n          });\n          const xform = svgroot.createSVGTransform();\n          const fname = 'set' + name.charAt(0).toUpperCase() + name.slice(1);\n          const values = name === 'matrix' ? [mtx] : valArr;\n\n          if (name === 'scale' && values.length === 1) {\n            values.push(values[0]);\n          } else if (name === 'translate' && values.length === 1) {\n            values.push(0);\n          } else if (name === 'rotate' && values.length === 1) {\n            values.push(0, 0);\n          }\n          xform[fname].apply(xform, values);\n          this._list.appendItem(xform);\n        }\n      }\n    };\n    this._removeFromOtherLists = function (item) {\n      if (item) {\n        // Check if this transform is already in a transformlist, and\n        // remove it if so.\n        let found = false;\n        for (const id in listMap_) {\n          const tl = listMap_[id];\n          for (let i = 0, len = tl._xforms.length; i < len; ++i) {\n            if (tl._xforms[i] === item) {\n              found = true;\n              tl.removeItem(i);\n              break;\n            }\n          }\n          if (found) {\n            break;\n          }\n        }\n      }\n    };\n\n    this.numberOfItems = 0;\n  }\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    this.numberOfItems = 0;\n    this._xforms = [];\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  initialize (newItem) {\n    this.numberOfItems = 1;\n    this._removeFromOtherLists(newItem);\n    this._xforms = [newItem];\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  getItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      return this._xforms[index];\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  insertItemBefore (newItem, index) {\n    let retValue = null;\n    if (index >= 0) {\n      if (index < this.numberOfItems) {\n        this._removeFromOtherLists(newItem);\n        const newxforms = new Array(this.numberOfItems + 1);\n        // TODO: use array copying and slicing\n        let i;\n        for (i = 0; i < index; ++i) {\n          newxforms[i] = this._xforms[i];\n        }\n        newxforms[i] = newItem;\n        for (let j = i + 1; i < this.numberOfItems; ++j, ++i) {\n          newxforms[j] = this._xforms[i];\n        }\n        this.numberOfItems++;\n        this._xforms = newxforms;\n        retValue = newItem;\n        this._list._update();\n      } else {\n        retValue = this._list.appendItem(newItem);\n      }\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  replaceItem (newItem, index) {\n    let retValue = null;\n    if (index < this.numberOfItems && index >= 0) {\n      this._removeFromOtherLists(newItem);\n      this._xforms[index] = newItem;\n      retValue = newItem;\n      this._list._update();\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  removeItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      const retValue = this._xforms[index];\n      const newxforms = new Array(this.numberOfItems - 1);\n      let i;\n      for (i = 0; i < index; ++i) {\n        newxforms[i] = this._xforms[i];\n      }\n      for (let j = i; j < this.numberOfItems - 1; ++j, ++i) {\n        newxforms[j] = this._xforms[i + 1];\n      }\n      this.numberOfItems--;\n      this._xforms = newxforms;\n      this._list._update();\n      return retValue;\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  appendItem (newItem) {\n    this._removeFromOtherLists(newItem);\n    this._xforms.push(newItem);\n    this.numberOfItems++;\n    this._list._update();\n    return newItem;\n  }\n}\n\n/**\n* @function module:SVGTransformList.resetListMap\n* @returns {undefined}\n*/\nexport const resetListMap = function () {\n  listMap_ = {};\n};\n\n/**\n * Removes transforms of the given element from the map.\n * @function module:SVGTransformList.removeElementFromListMap\n * @param {Element} elem - a DOM Element\n * @returns {undefined}\n */\nexport let removeElementFromListMap = function (elem) {\n  if (elem.id && listMap_[elem.id]) {\n    delete listMap_[elem.id];\n  }\n};\n\n/**\n* Returns an object that behaves like a `SVGTransformList` for the given DOM element.\n* @function module:SVGTransformList.getTransformList\n* @param {Element} elem - DOM element to get a transformlist from\n* @todo The polyfill should have `SVGAnimatedTransformList` and this should use it\n* @returns {SVGAnimatedTransformList|SVGTransformList}\n*/\nexport const getTransformList = function (elem) {\n  if (!supportsNativeTransformLists()) {\n    const id = elem.id || 'temp';\n    let t = listMap_[id];\n    if (!t || id === 'temp') {\n      listMap_[id] = new SVGTransformList(elem);\n      listMap_[id]._init();\n      t = listMap_[id];\n    }\n    return t;\n  }\n  if (elem.transform) {\n    return elem.transform.baseVal;\n  }\n  if (elem.gradientTransform) {\n    return elem.gradientTransform.baseVal;\n  }\n  if (elem.patternTransform) {\n    return elem.patternTransform.baseVal;\n  }\n\n  return null;\n};\n\n/**\n* @callback module:SVGTransformList.removeElementFromListMap\n* @param {Element} elem\n*/\n/**\n* Replace `removeElementFromListMap` for unit-testing.\n* @function module:SVGTransformList.changeRemoveElementFromListMap\n* @param {module:SVGTransformList.removeElementFromListMap} cb Passed a single argument `elem`\n* @returns {undefined}\n*/\nexport const changeRemoveElementFromListMap = function (cb) {\n  removeElementFromListMap = cb;\n};\n","/**\n * Tools for working with units\n * @module units\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\n\nconst wAttrs = ['x', 'x1', 'cx', 'rx', 'width'];\nconst hAttrs = ['y', 'y1', 'cy', 'ry', 'height'];\nconst unitAttrs = ['r', 'radius', ...wAttrs, ...hAttrs];\n// unused\n/*\nconst unitNumMap = {\n  '%': 2,\n  em: 3,\n  ex: 4,\n  px: 5,\n  cm: 6,\n  mm: 7,\n  in: 8,\n  pt: 9,\n  pc: 10\n};\n*/\n// Container of elements.\nlet elementContainer_;\n\n// Stores mapping of unit type to user coordinates.\nlet typeMap_ = {};\n\n/**\n * @interface module:units.ElementContainer\n */\n/**\n * @function module:units.ElementContainer#getBaseUnit\n * @returns {string} The base unit type of the container ('em')\n */\n/**\n * @function module:units.ElementContainer#getElement\n * @returns {Element} An element in the container given an id\n */\n/**\n * @function module:units.ElementContainer#getHeight\n * @returns {Float} The container's height\n */\n/**\n * @function module:units.ElementContainer#getWidth\n * @returns {Float} The container's width\n */\n/**\n * @function module:units.ElementContainer#getRoundDigits\n * @returns {Integer} The number of digits number should be rounded to\n */\n\n/**\n * @typedef {PlainObject} module:units.TypeMap\n * @property {Float} em\n * @property {Float} ex\n * @property {Float} in\n * @property {Float} cm\n * @property {Float} mm\n * @property {Float} pt\n * @property {Float} pc\n * @property {Integer} px\n * @property {0} %\n */\n\n/**\n * Initializes this module.\n *\n * @function module:units.init\n * @param {module:units.ElementContainer} elementContainer - An object implementing the ElementContainer interface.\n * @returns {undefined}\n */\nexport const init = function (elementContainer) {\n  elementContainer_ = elementContainer;\n\n  // Get correct em/ex values by creating a temporary SVG.\n  const svg = document.createElementNS(NS.SVG, 'svg');\n  document.body.append(svg);\n  const rect = document.createElementNS(NS.SVG, 'rect');\n  rect.setAttribute('width', '1em');\n  rect.setAttribute('height', '1ex');\n  rect.setAttribute('x', '1in');\n  svg.append(rect);\n  const bb = rect.getBBox();\n  svg.remove();\n\n  const inch = bb.x;\n  typeMap_ = {\n    em: bb.width,\n    ex: bb.height,\n    in: inch,\n    cm: inch / 2.54,\n    mm: inch / 25.4,\n    pt: inch / 72,\n    pc: inch / 6,\n    px: 1,\n    '%': 0\n  };\n};\n\n/**\n* Group: Unit conversion functions\n*/\n\n/**\n * @function module:units.getTypeMap\n * @returns {module:units.TypeMap} The unit object with values for each unit\n*/\nexport const getTypeMap = function () {\n  return typeMap_;\n};\n\n/**\n* @typedef {GenericArray} module:units.CompareNumbers\n* @property {Integer} length 2\n* @property {Float} 0\n* @property {Float} 1\n*/\n\n/**\n* Rounds a given value to a float with number of digits defined in\n* `round_digits` of `saveOptions`\n*\n* @function module:units.shortFloat\n* @param {string|Float|module:units.CompareNumbers} val - The value (or Array of two numbers) to be rounded\n* @returns {Float|string} If a string/number was given, returns a Float. If an array, return a string\n* with comma-separated floats\n*/\nexport const shortFloat = function (val) {\n  const digits = elementContainer_.getRoundDigits();\n  if (!isNaN(val)) {\n    // Note that + converts to Number\n    return +((+val).toFixed(digits));\n  }\n  if (Array.isArray(val)) {\n    return shortFloat(val[0]) + ',' + shortFloat(val[1]);\n  }\n  return parseFloat(val).toFixed(digits) - 0;\n};\n\n/**\n* Converts the number to given unit or baseUnit.\n* @function module:units.convertUnit\n* @param {string|Float} val\n* @param {\"em\"|\"ex\"|\"in\"|\"cm\"|\"mm\"|\"pt\"|\"pc\"|\"px\"|\"%\"} [unit]\n* @returns {Float}\n*/\nexport const convertUnit = function (val, unit) {\n  unit = unit || elementContainer_.getBaseUnit();\n  // baseVal.convertToSpecifiedUnits(unitNumMap[unit]);\n  // const val = baseVal.valueInSpecifiedUnits;\n  // baseVal.convertToSpecifiedUnits(1);\n  return shortFloat(val / typeMap_[unit]);\n};\n\n/**\n* Sets an element's attribute based on the unit in its current value.\n*\n* @function module:units.setUnitAttr\n* @param {Element} elem - DOM element to be changed\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {undefined}\n*/\nexport const setUnitAttr = function (elem, attr, val) {\n  //  if (!isNaN(val)) {\n  // New value is a number, so check currently used unit\n  // const oldVal = elem.getAttribute(attr);\n\n  // Enable this for alternate mode\n  // if (oldVal !== null && (isNaN(oldVal) || elementContainer_.getBaseUnit() !== 'px')) {\n  //   // Old value was a number, so get unit, then convert\n  //   let unit;\n  //   if (oldVal.substr(-1) === '%') {\n  //     const res = getResolution();\n  //     unit = '%';\n  //     val *= 100;\n  //     if (wAttrs.includes(attr)) {\n  //       val = val / res.w;\n  //     } else if (hAttrs.includes(attr)) {\n  //       val = val / res.h;\n  //     } else {\n  //       return val / Math.sqrt((res.w*res.w) + (res.h*res.h))/Math.sqrt(2);\n  //     }\n  //   } else {\n  //     if (elementContainer_.getBaseUnit() !== 'px') {\n  //       unit = elementContainer_.getBaseUnit();\n  //     } else {\n  //       unit = oldVal.substr(-2);\n  //     }\n  //     val = val / typeMap_[unit];\n  //   }\n  //\n  // val += unit;\n  // }\n  // }\n  elem.setAttribute(attr, val);\n};\n\nconst attrsToConvert = {\n  line: ['x1', 'x2', 'y1', 'y2'],\n  circle: ['cx', 'cy', 'r'],\n  ellipse: ['cx', 'cy', 'rx', 'ry'],\n  foreignObject: ['x', 'y', 'width', 'height'],\n  rect: ['x', 'y', 'width', 'height'],\n  image: ['x', 'y', 'width', 'height'],\n  use: ['x', 'y', 'width', 'height'],\n  text: ['x', 'y']\n};\n\n/**\n* Converts all applicable attributes to the configured baseUnit.\n* @function module:units.convertAttrs\n* @param {Element} element - A DOM element whose attributes should be converted\n* @returns {undefined}\n*/\nexport const convertAttrs = function (element) {\n  const elName = element.tagName;\n  const unit = elementContainer_.getBaseUnit();\n  const attrs = attrsToConvert[elName];\n  if (!attrs) { return; }\n\n  const len = attrs.length;\n  for (let i = 0; i < len; i++) {\n    const attr = attrs[i];\n    const cur = element.getAttribute(attr);\n    if (cur) {\n      if (!isNaN(cur)) {\n        element.setAttribute(attr, (cur / typeMap_[unit]) + unit);\n      }\n      // else {\n      // Convert existing?\n      // }\n    }\n  }\n};\n\n/**\n* Converts given values to numbers. Attributes must be supplied in\n* case a percentage is given.\n*\n* @function module:units.convertToNum\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {Float} The converted number\n*/\nexport const convertToNum = function (attr, val) {\n  // Return a number if that's what it already is\n  if (!isNaN(val)) { return val - 0; }\n  if (val.substr(-1) === '%') {\n    // Deal with percentage, depends on attribute\n    const num = val.substr(0, val.length - 1) / 100;\n    const width = elementContainer_.getWidth();\n    const height = elementContainer_.getHeight();\n\n    if (wAttrs.includes(attr)) {\n      return num * width;\n    }\n    if (hAttrs.includes(attr)) {\n      return num * height;\n    }\n    return num * Math.sqrt((width * width) + (height * height)) / Math.sqrt(2);\n  }\n  const unit = val.substr(-2);\n  const num = val.substr(0, val.length - 2);\n  // Note that this multiplication turns the string into a number\n  return num * typeMap_[unit];\n};\n\n/**\n* Check if an attribute's value is in a valid format.\n* @function module:units.isValidUnit\n* @param {string} attr - The name of the attribute associated with the value\n* @param {string} val - The attribute value to check\n* @param {Element} selectedElement\n* @returns {boolean} Whether the unit is valid\n*/\nexport const isValidUnit = function (attr, val, selectedElement) {\n  if (unitAttrs.includes(attr)) {\n    // True if it's just a number\n    if (!isNaN(val)) {\n      return true;\n    }\n    // Not a number, check if it has a valid unit\n    val = val.toLowerCase();\n    return Object.keys(typeMap_).some((unit) => {\n      const re = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n      return re.test(val);\n    });\n  }\n  if (attr === 'id') {\n    // if we're trying to change the id, make sure it's not already present in the doc\n    // and the id value is valid.\n\n    let result = false;\n    // because getElem() can throw an exception in the case of an invalid id\n    // (according to https://www.w3.org/TR/xml-id/ IDs must be a NCName)\n    // we wrap it in an exception and only return true if the ID was valid and\n    // not already present\n    try {\n      const elem = elementContainer_.getElement(val);\n      result = (elem == null || elem === selectedElement);\n    } catch (e) {}\n    return result;\n  }\n  return true;\n};\n","/**\n * For command history tracking and undo functionality\n * @module history\n * @license MIT\n * @copyright 2010 Jeff Schiller\n */\n\nimport {getHref, setHref, getRotationAngle} from './utilities.js';\nimport {removeElementFromListMap} from './svgtransformlist.js';\n\n/**\n* Group: Undo/Redo history management\n*/\nexport const HistoryEventTypes = {\n  BEFORE_APPLY: 'before_apply',\n  AFTER_APPLY: 'after_apply',\n  BEFORE_UNAPPLY: 'before_unapply',\n  AFTER_UNAPPLY: 'after_unapply'\n};\n\n// const removedElements = {};\n\n/**\n* Base class for commands.\n*/\nclass Command {\n  /**\n  * @returns {string}\n  */\n  getText () {\n    return this.text;\n  }\n}\n\n// Todo: Figure out why the interface members aren't showing\n//   up (with or without modules applied), despite our apparently following\n//   http://usejsdoc.org/tags-interface.html#virtual-comments\n\n/**\n * An interface that all command objects must implement.\n * @interface module:history.HistoryCommand\n*/\n/**\n * Applies\n *\n * @function module:history.HistoryCommand#apply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n *\n * Unapplies\n * @function module:history.HistoryCommand#unapply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n * Returns the elements\n * @function module:history.HistoryCommand#elements\n * @returns {Element[]}\n */\n/**\n * Gets the text\n * @function module:history.HistoryCommand#getText\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand.type\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand#type\n * @returns {string}\n*/\n\n/**\n * @event module:history~Command#event:history\n * @type {module:history.HistoryCommand}\n */\n\n/**\n * An interface for objects that will handle history events.\n * @interface module:history.HistoryEventHandler\n */\n/**\n *\n * @function module:history.HistoryEventHandler#handleHistoryEvent\n * @param {string} eventType One of the HistoryEvent types\n * @param {module:history~Command#event:history} command\n * @listens module:history~Command#event:history\n * @returns {undefined}\n *\n */\n\n/**\n * History command for an element that had its DOM position changed.\n * @implements {module:history.HistoryCommand}\n * @param {Element} elem - The DOM element that was moved\n * @param {Element} oldNextSibling - The element's next sibling before it was moved\n * @param {Element} oldParent - The element's parent before it was moved\n * @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class MoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Move ' + elem.tagName + ' to ' + text) : ('Move ' + elem.tagName);\n    this.oldNextSibling = oldNextSibling;\n    this.oldParent = oldParent;\n    this.newNextSibling = elem.nextSibling;\n    this.newParent = elem.parentNode;\n  }\n  type () {\n    return 'svgedit.history.MoveElementCommand';\n  }\n\n  /**\n   * Re-positions the element.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  apply (handler) {\n    // TODO(codedread): Refactor this common event code into a base HistoryCommand class.\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n   * Positions the element back to its original location.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nMoveElementCommand.type = MoveElementCommand.prototype.type;\n\n/**\n* History command for an element that was added to the DOM.\n* @implements {module:history.HistoryCommand}\n*\n* @param {Element} elem - The newly added DOM element\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class InsertElementCommand extends Command {\n  constructor (elem, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Create ' + elem.tagName);\n    this.parent = elem.parentNode;\n    this.nextSibling = this.elem.nextSibling;\n  }\n\n  type () {\n    return 'svgedit.history.InsertElementCommand';\n  }\n\n  /**\n  * Re-inserts the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.parent.insertBefore(this.elem, this.nextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Removes the element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.parent = this.elem.parentNode;\n    this.elem = this.elem.parentNode.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nInsertElementCommand.type = InsertElementCommand.prototype.type;\n\n/**\n* History command for an element removed from the DOM.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The removed DOM element\n* @param {Node} oldNextSibling - The DOM element's nextSibling when it was in the DOM\n* @param {Element} oldParent - The DOM element's parent\n* @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class RemoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Delete ' + elem.tagName);\n    this.nextSibling = oldNextSibling;\n    this.parent = oldParent;\n\n    // special hack for webkit: remove this element's entry in the svgTransformLists map\n    removeElementFromListMap(elem);\n  }\n  type () {\n    return 'svgedit.history.RemoveElementCommand';\n  }\n\n  /**\n  * Re-removes the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    this.parent = this.elem.parentNode;\n    this.elem = this.parent.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Re-adds the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    if (this.nextSibling == null) {\n      if (window.console) {\n        console.log('Error: reference element was lost');\n      }\n    }\n    this.parent.insertBefore(this.elem, this.nextSibling); // Don't use `before` or `prepend` as `this.nextSibling` may be `null`\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nRemoveElementCommand.type = RemoveElementCommand.prototype.type;\n\n/**\n* @typedef {\"#text\"|\"#href\"|string} module:history.CommandAttributeName\n*/\n/**\n* @typedef {PlainObject.<module:history.CommandAttributeName, string>} module:history.CommandAttributes\n*/\n\n/**\n* History command to make a change to an element.\n* Usually an attribute change, but can also be textcontent.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The DOM element that was changed\n* @param {module:history.CommandAttributes} attrs - Attributes to be changed with the values they had *before* the change\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class ChangeElementCommand extends Command {\n  constructor (elem, attrs, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Change ' + elem.tagName + ' ' + text) : ('Change ' + elem.tagName);\n    this.newValues = {};\n    this.oldValues = attrs;\n    for (const attr in attrs) {\n      if (attr === '#text') {\n        this.newValues[attr] = elem.textContent;\n      } else if (attr === '#href') {\n        this.newValues[attr] = getHref(elem);\n      } else {\n        this.newValues[attr] = elem.getAttribute(attr);\n      }\n    }\n  }\n  type () {\n    return 'svgedit.history.ChangeElementCommand';\n  }\n\n  /**\n  * Performs the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    let bChangedTransform = false;\n    for (const attr in this.newValues) {\n      if (this.newValues[attr]) {\n        if (attr === '#text') {\n          this.elem.textContent = this.newValues[attr];\n        } else if (attr === '#href') {\n          setHref(this.elem, this.newValues[attr]);\n        } else {\n          this.elem.setAttribute(attr, this.newValues[attr]);\n        }\n      } else {\n        if (attr === '#text') {\n          this.elem.textContent = '';\n        } else {\n          this.elem.setAttribute(attr, '');\n          this.elem.removeAttribute(attr);\n        }\n      }\n\n      if (attr === 'transform') { bChangedTransform = true; }\n    }\n\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * Reverses the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    let bChangedTransform = false;\n    for (const attr in this.oldValues) {\n      if (this.oldValues[attr]) {\n        if (attr === '#text') {\n          this.elem.textContent = this.oldValues[attr];\n        } else if (attr === '#href') {\n          setHref(this.elem, this.oldValues[attr]);\n        } else {\n          this.elem.setAttribute(attr, this.oldValues[attr]);\n        }\n      } else {\n        if (attr === '#text') {\n          this.elem.textContent = '';\n        } else {\n          this.elem.removeAttribute(attr);\n        }\n      }\n      if (attr === 'transform') { bChangedTransform = true; }\n    }\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    // Remove transformlist to prevent confusion that causes bugs like 575.\n    removeElementFromListMap(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nChangeElementCommand.type = ChangeElementCommand.prototype.type;\n\n// TODO: create a 'typing' command object that tracks changes in text\n// if a new Typing command is created and the top command on the stack is also a Typing\n// and they both affect the same element, then collapse the two commands into one\n\n/**\n* History command that can contain/execute multiple other commands.\n* @implements {module:history.HistoryCommand}\n*/\nexport class BatchCommand extends Command {\n  /**\n  * @param {string} [text] - An optional string visible to user related to this change\n  */\n  constructor (text) {\n    super();\n    this.text = text || 'Batch Command';\n    this.stack = [];\n  }\n\n  type () {\n    return 'svgedit.history.BatchCommand';\n  }\n\n  /**\n  * Runs \"apply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    const len = this.stack.length;\n    for (let i = 0; i < len; ++i) {\n      this.stack[i].apply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Runs \"unapply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    for (let i = this.stack.length - 1; i >= 0; i--) {\n      this.stack[i].unapply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * Iterate through all our subcommands.\n  * @returns {Element[]} All the elements we are changing\n  */\n  elements () {\n    const elems = [];\n    let cmd = this.stack.length;\n    while (cmd--) {\n      const thisElems = this.stack[cmd].elements();\n      let elem = thisElems.length;\n      while (elem--) {\n        if (!elems.includes(thisElems[elem])) { elems.push(thisElems[elem]); }\n      }\n    }\n    return elems;\n  }\n\n  /**\n  * Adds a given command to the history stack.\n  * @param {Command} cmd - The undo command object to add\n  * @returns {undefined}\n  */\n  addSubCommand (cmd) {\n    this.stack.push(cmd);\n  }\n\n  /**\n  * @returns {boolean} Indicates whether or not the batch command is empty\n  */\n  isEmpty () {\n    return !this.stack.length;\n  }\n}\nBatchCommand.type = BatchCommand.prototype.type;\n\n/**\n*\n*/\nexport class UndoManager {\n  /**\n  * @param {module:history.HistoryEventHandler} historyEventHandler\n  */\n  constructor (historyEventHandler) {\n    this.handler_ = historyEventHandler || null;\n    this.undoStackPointer = 0;\n    this.undoStack = [];\n\n    // this is the stack that stores the original values, the elements and\n    // the attribute name for begin/finish\n    this.undoChangeStackPointer = -1;\n    this.undoableChangeStack = [];\n  }\n\n  /**\n  * Resets the undo stack, effectively clearing the undo/redo history.\n  * @returns {undefined}\n  */\n  resetUndoStack () {\n    this.undoStack = [];\n    this.undoStackPointer = 0;\n  }\n\n  /**\n  * @returns {Integer} Current size of the undo history stack\n  */\n  getUndoStackSize () {\n    return this.undoStackPointer;\n  }\n\n  /**\n  * @returns {Integer} Current size of the redo history stack\n  */\n  getRedoStackSize () {\n    return this.undoStack.length - this.undoStackPointer;\n  }\n\n  /**\n  * @returns {string} String associated with the next undo command\n  */\n  getNextUndoCommandText () {\n    return this.undoStackPointer > 0 ? this.undoStack[this.undoStackPointer - 1].getText() : '';\n  }\n\n  /**\n  * @returns {string} String associated with the next redo command\n  */\n  getNextRedoCommandText () {\n    return this.undoStackPointer < this.undoStack.length ? this.undoStack[this.undoStackPointer].getText() : '';\n  }\n\n  /**\n  * Performs an undo step.\n  * @returns {undefined}\n  */\n  undo () {\n    if (this.undoStackPointer > 0) {\n      const cmd = this.undoStack[--this.undoStackPointer];\n      cmd.unapply(this.handler_);\n    }\n  }\n\n  /**\n  * Performs a redo step.\n  * @returns {undefined}\n  */\n  redo () {\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      const cmd = this.undoStack[this.undoStackPointer++];\n      cmd.apply(this.handler_);\n    }\n  }\n\n  /**\n  * Adds a command object to the undo history stack.\n  * @param {Command} cmd - The command object to add\n  * @returns {undefined}\n  */\n  addCommandToHistory (cmd) {\n    // FIXME: we MUST compress consecutive text changes to the same element\n    // (right now each keystroke is saved as a separate command that includes the\n    // entire text contents of the text element)\n    // TODO: consider limiting the history that we store here (need to do some slicing)\n\n    // if our stack pointer is not at the end, then we have to remove\n    // all commands after the pointer and insert the new command\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      this.undoStack = this.undoStack.splice(0, this.undoStackPointer);\n    }\n    this.undoStack.push(cmd);\n    this.undoStackPointer = this.undoStack.length;\n  }\n\n  /**\n  * This function tells the canvas to remember the old values of the\n  * `attrName` attribute for each element sent in.  The elements and values\n  * are stored on a stack, so the next call to `finishUndoableChange()` will\n  * pop the elements and old values off the stack, gets the current values\n  * from the DOM and uses all of these to construct the undo-able command.\n  * @param {string} attrName - The name of the attribute being changed\n  * @param {Element[]} elems - Array of DOM elements being changed\n  * @returns {undefined}\n  */\n  beginUndoableChange (attrName, elems) {\n    const p = ++this.undoChangeStackPointer;\n    let i = elems.length;\n    const oldValues = new Array(i), elements = new Array(i);\n    while (i--) {\n      const elem = elems[i];\n      if (elem == null) { continue; }\n      elements[i] = elem;\n      oldValues[i] = elem.getAttribute(attrName);\n    }\n    this.undoableChangeStack[p] = {\n      attrName,\n      oldValues,\n      elements\n    };\n  }\n\n  /**\n  * This function returns a `BatchCommand` object which summarizes the\n  * change since `beginUndoableChange` was called.  The command can then\n  * be added to the command history.\n  * @returns {BatchCommand} Batch command object with resulting changes\n  */\n  finishUndoableChange () {\n    const p = this.undoChangeStackPointer--;\n    const changeset = this.undoableChangeStack[p];\n    const {attrName} = changeset;\n    const batchCmd = new BatchCommand('Change ' + attrName);\n    let i = changeset.elements.length;\n    while (i--) {\n      const elem = changeset.elements[i];\n      if (elem == null) { continue; }\n      const changes = {};\n      changes[attrName] = changeset.oldValues[i];\n      if (changes[attrName] !== elem.getAttribute(attrName)) {\n        batchCmd.addSubCommand(new ChangeElementCommand(elem, changes, attrName));\n      }\n    }\n    this.undoableChangeStack[p] = null;\n    return batchCmd;\n  }\n}\n","/* globals jQuery */\n/**\n * Path functionality\n * @module path\n * @license MIT\n *\n * @copyright 2011 Alexis Deveria, 2011 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {shortFloat} from './units.js';\nimport {ChangeElementCommand, BatchCommand} from './history.js';\nimport {\n  transformPoint, getMatrix, snapToAngle, rectsIntersect,\n  transformListToTransform\n} from './math.js';\nimport {\n  assignAttributes, getElem, getRotationAngle, getBBox,\n  getRefElem, findDefs, snapToGrid,\n  getBBox as utilsGetBBox\n} from './utilities.js';\nimport {\n  supportsPathInsertItemBefore, supportsPathReplaceItem, isWebkit\n} from './browser.js';\n\nconst $ = jQuery;\n\nconst segData = {\n  2: ['x', 'y'], // PATHSEG_MOVETO_ABS\n  4: ['x', 'y'], // PATHSEG_LINETO_ABS\n  6: ['x', 'y', 'x1', 'y1', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_ABS\n  8: ['x', 'y', 'x1', 'y1'], // PATHSEG_CURVETO_QUADRATIC_ABS\n  10: ['x', 'y', 'r1', 'r2', 'angle', 'largeArcFlag', 'sweepFlag'], // PATHSEG_ARC_ABS\n  12: ['x'], // PATHSEG_LINETO_HORIZONTAL_ABS\n  14: ['y'], // PATHSEG_LINETO_VERTICAL_ABS\n  16: ['x', 'y', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_SMOOTH_ABS\n  18: ['x', 'y'] // PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS\n};\n\n/**\n * @tutorial LocaleDocs\n * @typedef {module:locale.LocaleStrings|PlainObject} module:path.uiStrings\n * @property {PlainObject.<string, string>} ui\n*/\n\nconst uiStrings = {};\n/**\n* @function module:path.setUiStrings\n* @param {module:path.uiStrings} strs\n* @returns {undefined}\n*/\nexport const setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.ui);\n};\n\nlet pathFuncs = [];\n\nlet linkControlPts = true;\n\n// Stores references to paths via IDs.\n// TODO: Make this cross-document happy.\nlet pathData = {};\n\n/**\n* @function module:path.setLinkControlPoints\n* @param {boolean} lcp\n* @returns {undefined}\n*/\nexport const setLinkControlPoints = function (lcp) {\n  linkControlPts = lcp;\n};\n\n/**\n * @name module:path.path\n * @type {null|module:path.Path}\n * @memberof module:path\n*/\nexport let path = null;\n\nlet editorContext_ = null;\n\n/**\n* @external MouseEvent\n*/\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:path.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:path.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n/**\n * @interface module:path.EditorContext\n * @property {module:select.SelectorManager} selectorManager\n * @property {module:svgcanvas.SvgCanvas} canvas\n */\n/**\n * @function module:path.EditorContext#call\n * @param {\"selected\"|\"changed\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed} arg - Argument to pass through to the callback function. If the event is \"changed\", an array of `Element`s is passed; if \"selected\", a single-item array of `Element` is passed.\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#resetD\n * @param {SVGPathElement} p\n * @returns {undefined}\n*/\n/**\n * Note: This doesn't round to an integer necessarily\n * @function module:path.EditorContext#round\n * @param {Float} val\n * @returns {Float} Rounded value to nearest value based on `currentZoom`\n */\n/**\n * @function module:path.EditorContext#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addToSelection\n * @param {Element[]} elemsToAdd - An array of DOM elements to add to the selection\n * @param {boolean} showGrips - Indicates whether the resize grips should be shown\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#remapElement\n * @param {Element} selected - DOM element to be changed\n * @param {PlainObject.<string, string>} changes - Object with changes to be remapped\n * @param {SVGMatrix} m - Matrix object to use for remapping coordinates\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#addSVGElementFromJson\n * @param {module:path.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:path.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:path.EditorContext#getOpacity\n * @returns {Float}\n */\n/**\n * @function module:path.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:path.EditorContext#getContainer\n * @returns {Element}\n */\n/**\n * @function module:path.EditorContext#setStarted\n * @param {boolean} s\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#getRubberBox\n * @returns {SVGRectElement}\n*/\n/**\n * @function module:path.EditorContext#setRubberBox\n * @param {SVGRectElement} rb\n * @returns {SVGRectElement} Same as parameter passed in\n */\n/**\n * @function module:path.EditorContext#addPtsToSelection\n * @param {PlainObject} cfg\n * @param {boolean} cfg.closedSubpath\n * @param {SVGCircleElement[]} cfg.grips\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#endChanges\n * @param {PlainObject} cfg\n * @param {string} cfg.cmd\n * @param {Element} cfg.elem\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#getCurrentZoom\n * @returns {Float} The current zoom level\n */\n/**\n * Returns the last created DOM element ID string\n * @function module:path.EditorContext#getId\n * @returns {string}\n */\n/**\n * Creates and returns a unique ID string for a DOM element\n * @function module:path.EditorContext#getNextId\n * @returns {string}\n*/\n/**\n * Gets the desired element from a mouse event\n * @function module:path.EditorContext#getMouseTarget\n * @param {external:MouseEvent} evt - Event object from the mouse event\n * @returns {Element} DOM element we want\n */\n/**\n * @function module:path.EditorContext#getCurrentMode\n * @returns {string}\n */\n/**\n * @function module:path.EditorContext#setCurrentMode\n * @param {string} cm The mode\n * @returns {string} The same mode as passed in\n*/\n/**\n * @function module:path.EditorContext#getDrawnPath\n * @returns {SVGPathElement|null}\n */\n/**\n * @function module:path.EditorContext#setDrawnPath\n * @param {SVGPathElement|null} dp\n * @returns {SVGPathElement|null} The same value as passed in\n */\n/**\n * @function module:path.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\n/**\n* @function module:path.init\n* @param {module:path.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n\n  pathFuncs = [0, 'ClosePath'];\n  const pathFuncsStrs = ['Moveto', 'Lineto', 'CurvetoCubic', 'CurvetoQuadratic', 'Arc',\n    'LinetoHorizontal', 'LinetoVertical', 'CurvetoCubicSmooth', 'CurvetoQuadraticSmooth'];\n  $.each(pathFuncsStrs, function (i, s) {\n    pathFuncs.push(s + 'Abs');\n    pathFuncs.push(s + 'Rel');\n  });\n};\n\n/**\n* @function module:path.insertItemBefore\n* @param {Element} elem\n* @param {Segment} newseg\n* @param {Integer} index\n* @returns {undefined}\n*/\nexport const insertItemBefore = function (elem, newseg, index) {\n  // Support insertItemBefore on paths for FF2\n  const list = elem.pathSegList;\n\n  if (supportsPathInsertItemBefore()) {\n    list.insertItemBefore(newseg, index);\n    return;\n  }\n  const len = list.numberOfItems;\n  const arr = [];\n  for (let i = 0; i < len; i++) {\n    const curSeg = list.getItem(i);\n    arr.push(curSeg);\n  }\n  list.clear();\n  for (let i = 0; i < len; i++) {\n    if (i === index) { // index + 1\n      list.appendItem(newseg);\n    }\n    list.appendItem(arr[i]);\n  }\n};\n\n/**\n* @function module:path.ptObjToArr\n* @todo See if this should just live in `replacePathSeg`\n* @param {string} type\n* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem\n* @returns {ArgumentsArray}\n*/\nexport const ptObjToArr = function (type, segItem) {\n  const props = segData[type];\n  return props.map((prop) => {\n    return segItem[prop];\n  });\n};\n\n/**\n* @function module:path.getGripPt\n* @param {Segment} seg\n* @param {module:math.XYObject} altPt\n* @returns {module:math.XYObject}\n*/\nexport const getGripPt = function (seg, altPt) {\n  const {path} = seg;\n  let out = {\n    x: altPt ? altPt.x : seg.item.x,\n    y: altPt ? altPt.y : seg.item.y\n  };\n\n  if (path.matrix) {\n    const pt = transformPoint(out.x, out.y, path.matrix);\n    out = pt;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n};\n\n/**\n* @function module:path.getPointFromGrip\n* @param {module:math.XYObject} pt\n* @param {module:path.Path} path\n* @returns {module:math.XYObject}\n*/\nexport const getPointFromGrip = function (pt, path) {\n  const out = {\n    x: pt.x,\n    y: pt.y\n  };\n\n  if (path.matrix) {\n    pt = transformPoint(out.x, out.y, path.imatrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  return out;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addPointGrip\n* @param {Integer} index\n* @param {Integer} x\n* @param {Integer} y\n* @returns {SVGCircleElement}\n*/\nexport const addPointGrip = function (index, x, y) {\n  // create the container of all the point grips\n  const pointGripContainer = getGripContainer();\n\n  let pointGrip = getElem('pathpointgrip_' + index);\n  // create it\n  if (!pointGrip) {\n    pointGrip = document.createElementNS(NS.SVG, 'circle');\n    const atts = {\n      id: 'pathpointgrip_' + index,\n      display: 'none',\n      r: 4,\n      fill: '#0FF',\n      stroke: '#00F',\n      'stroke-width': 2,\n      cursor: 'move',\n      style: 'pointer-events:all'\n    };\n    if ('pathNodeTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n      atts['xlink:title'] = uiStrings.pathNodeTooltip;\n    }\n    assignAttributes(pointGrip, atts);\n    pointGrip = pointGripContainer.appendChild(pointGrip);\n\n    const grip = $('#pathpointgrip_' + index);\n    grip.dblclick(function () {\n      if (path) {\n        path.setSegType();\n      }\n    });\n  }\n  if (x && y) {\n    // set up the point grip element and display it\n    assignAttributes(pointGrip, {\n      cx: x,\n      cy: y,\n      display: 'inline'\n    });\n  }\n  return pointGrip;\n};\n\n/**\n* @function module:path.getGripContainer\n* @returns {Element}\n*/\nexport const getGripContainer = function () {\n  let c = getElem('pathpointgrip_container');\n  if (!c) {\n    const parent = getElem('selectorParentGroup');\n    c = parent.appendChild(document.createElementNS(NS.SVG, 'g'));\n    c.id = 'pathpointgrip_container';\n  }\n  return c;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addCtrlGrip\n* @param {string} id\n* @returns {SVGCircleElement}\n*/\nexport const addCtrlGrip = function (id) {\n  let pointGrip = getElem('ctrlpointgrip_' + id);\n  if (pointGrip) { return pointGrip; }\n\n  pointGrip = document.createElementNS(NS.SVG, 'circle');\n  const atts = {\n    id: 'ctrlpointgrip_' + id,\n    display: 'none',\n    r: 4,\n    fill: '#0FF',\n    stroke: '#55F',\n    'stroke-width': 1,\n    cursor: 'move',\n    style: 'pointer-events:all'\n  };\n  if ('pathCtrlPtTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n    atts['xlink:title'] = uiStrings.pathCtrlPtTooltip;\n  }\n  assignAttributes(pointGrip, atts);\n  getGripContainer().append(pointGrip);\n  return pointGrip;\n};\n\n/**\n* @function module:path.getCtrlLine\n* @param {string} id\n* @returns {SVGLineElement}\n*/\nexport const getCtrlLine = function (id) {\n  let ctrlLine = getElem('ctrlLine_' + id);\n  if (ctrlLine) { return ctrlLine; }\n\n  ctrlLine = document.createElementNS(NS.SVG, 'line');\n  assignAttributes(ctrlLine, {\n    id: 'ctrlLine_' + id,\n    stroke: '#555',\n    'stroke-width': 1,\n    style: 'pointer-events:none'\n  });\n  getGripContainer().append(ctrlLine);\n  return ctrlLine;\n};\n\n/**\n* @function module:path.getPointGrip\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGCircleElement}\n*/\nexport const getPointGrip = function (seg, update) {\n  const {index} = seg;\n  const pointGrip = addPointGrip(index);\n\n  if (update) {\n    const pt = getGripPt(seg);\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n  }\n\n  return pointGrip;\n};\n\n/**\n* @function module:path.getControlPoints\n* @param {Segment} seg\n* @returns {PlainObject.<string, SVGLineElement|SVGCircleElement>}\n*/\nexport const getControlPoints = function (seg) {\n  const {item, index} = seg;\n  if (!('x1' in item) || !('x2' in item)) { return null; }\n  const cpt = {};\n  /* const pointGripContainer = */ getGripContainer();\n\n  // Note that this is intentionally not seg.prev.item\n  const prev = path.segs[index - 1].item;\n\n  const segItems = [prev, item];\n\n  for (let i = 1; i < 3; i++) {\n    const id = index + 'c' + i;\n\n    const ctrlLine = cpt['c' + i + '_line'] = getCtrlLine(id);\n\n    const pt = getGripPt(seg, {x: item['x' + i], y: item['y' + i]});\n    const gpt = getGripPt(seg, {x: segItems[i - 1].x, y: segItems[i - 1].y});\n\n    assignAttributes(ctrlLine, {\n      x1: pt.x,\n      y1: pt.y,\n      x2: gpt.x,\n      y2: gpt.y,\n      display: 'inline'\n    });\n\n    cpt['c' + i + '_line'] = ctrlLine;\n\n    // create it\n    const pointGrip = cpt['c' + i] = addCtrlGrip(id);\n\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n    cpt['c' + i] = pointGrip;\n  }\n  return cpt;\n};\n\n/**\n* This replaces the segment at the given index. Type is given as number.\n* @function module:path.replacePathSeg\n* @param {Integer} type Possible values set during {@link module:path.init}\n* @param {Integer} index\n* @param {ArgumentsArray} pts\n* @param {SVGPathElement} elem\n* @returns {undefined}\n*/\nexport const replacePathSeg = function (type, index, pts, elem) {\n  const pth = elem || path.elem;\n\n  const func = 'createSVGPathSeg' + pathFuncs[type];\n  const seg = pth[func].apply(pth, pts);\n\n  if (supportsPathReplaceItem()) {\n    pth.pathSegList.replaceItem(seg, index);\n  } else {\n    const segList = pth.pathSegList;\n    const len = segList.numberOfItems;\n    const arr = [];\n    for (let i = 0; i < len; i++) {\n      const curSeg = segList.getItem(i);\n      arr.push(curSeg);\n    }\n    segList.clear();\n    for (let i = 0; i < len; i++) {\n      if (i === index) {\n        segList.appendItem(seg);\n      } else {\n        segList.appendItem(arr[i]);\n      }\n    }\n  }\n};\n\n/**\n* @function module:path.getSegSelector\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGPathElement}\n*/\nexport const getSegSelector = function (seg, update) {\n  const {index} = seg;\n  let segLine = getElem('segline_' + index);\n  if (!segLine) {\n    const pointGripContainer = getGripContainer();\n    // create segline\n    segLine = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(segLine, {\n      id: 'segline_' + index,\n      display: 'none',\n      fill: 'none',\n      stroke: '#0FF',\n      'stroke-width': 2,\n      style: 'pointer-events:none',\n      d: 'M0,0 0,0'\n    });\n    pointGripContainer.append(segLine);\n  }\n\n  if (update) {\n    const {prev} = seg;\n    if (!prev) {\n      segLine.setAttribute('display', 'none');\n      return segLine;\n    }\n\n    const pt = getGripPt(prev);\n    // Set start point\n    replacePathSeg(2, 0, [pt.x, pt.y], segLine);\n\n    const pts = ptObjToArr(seg.type, seg.item); // , true);\n    for (let i = 0; i < pts.length; i += 2) {\n      const pt = getGripPt(seg, {x: pts[i], y: pts[i + 1]});\n      pts[i] = pt.x;\n      pts[i + 1] = pt.y;\n    }\n\n    replacePathSeg(seg.type, 1, pts, segLine);\n  }\n  return segLine;\n};\n\n/**\n * @typedef {PlainObject} Point\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n */\n\n/**\n* Takes three points and creates a smoother line based on them.\n* @function module:path.smoothControlPoints\n* @param {Point} ct1 - Object with x and y values (first control point)\n* @param {Point} ct2 - Object with x and y values (second control point)\n* @param {Point} pt - Object with x and y values (third point)\n* @returns {Point[]} Array of two \"smoothed\" point objects\n*/\nexport const smoothControlPoints = function (ct1, ct2, pt) {\n  // each point must not be the origin\n  const x1 = ct1.x - pt.x,\n    y1 = ct1.y - pt.y,\n    x2 = ct2.x - pt.x,\n    y2 = ct2.y - pt.y;\n\n  if ((x1 !== 0 || y1 !== 0) && (x2 !== 0 || y2 !== 0)) {\n    const\n      r1 = Math.sqrt(x1 * x1 + y1 * y1),\n      r2 = Math.sqrt(x2 * x2 + y2 * y2),\n      nct1 = editorContext_.getSVGRoot().createSVGPoint(),\n      nct2 = editorContext_.getSVGRoot().createSVGPoint();\n    let anglea = Math.atan2(y1, x1),\n      angleb = Math.atan2(y2, x2);\n    if (anglea < 0) { anglea += 2 * Math.PI; }\n    if (angleb < 0) { angleb += 2 * Math.PI; }\n\n    const angleBetween = Math.abs(anglea - angleb),\n      angleDiff = Math.abs(Math.PI - angleBetween) / 2;\n\n    let newAnglea, newAngleb;\n    if (anglea - angleb > 0) {\n      newAnglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff);\n    } else {\n      newAnglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff);\n    }\n\n    // rotate the points\n    nct1.x = r1 * Math.cos(newAnglea) + pt.x;\n    nct1.y = r1 * Math.sin(newAnglea) + pt.y;\n    nct2.x = r2 * Math.cos(newAngleb) + pt.x;\n    nct2.y = r2 * Math.sin(newAngleb) + pt.y;\n\n    return [nct1, nct2];\n  }\n  return undefined;\n};\n\n/**\n*\n*/\nexport class Segment {\n  /**\n  * @param {Integer} index\n  * @param {SVGPathSeg} item\n  * @todo Is `item` be more constrained here?\n  */\n  constructor (index, item) {\n    this.selected = false;\n    this.index = index;\n    this.item = item;\n    this.type = item.pathSegType;\n\n    this.ctrlpts = [];\n    this.ptgrip = null;\n    this.segsel = null;\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  showCtrlPts (y) {\n    for (const i in this.ctrlpts) {\n      if (this.ctrlpts.hasOwnProperty(i)) {\n        this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');\n      }\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  selectCtrls (y) {\n    $('#ctrlpointgrip_' + this.index + 'c1, #ctrlpointgrip_' + this.index + 'c2')\n      .attr('fill', y ? '#0FF' : '#EEE');\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  show (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('display', y ? 'inline' : 'none');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      // Show/hide all control points if available\n      this.showCtrlPts(y);\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  select (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('stroke', y ? '#0FF' : '#00F');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      if (this.ctrlpts) {\n        this.selectCtrls(y);\n      }\n      this.selected = y;\n    }\n  }\n\n  /**\n   * @returns {undefined}\n   */\n  addGrip () {\n    this.ptgrip = getPointGrip(this, true);\n    this.ctrlpts = getControlPoints(this); // , true);\n    this.segsel = getSegSelector(this, true);\n  }\n\n  /**\n   * @param {boolean} full\n   * @returns {undefined}\n   */\n  update (full) {\n    if (this.ptgrip) {\n      const pt = getGripPt(this);\n      assignAttributes(this.ptgrip, {\n        cx: pt.x,\n        cy: pt.y\n      });\n\n      getSegSelector(this, true);\n\n      if (this.ctrlpts) {\n        if (full) {\n          this.item = path.elem.pathSegList.getItem(this.index);\n          this.type = this.item.pathSegType;\n        }\n        getControlPoints(this);\n      }\n      // this.segsel.setAttribute('display', y ? 'inline' : 'none');\n    }\n  }\n\n  /**\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  move (dx, dy) {\n    const {item} = this;\n\n    const curPts = this.ctrlpts\n      ? [item.x += dx, item.y += dy,\n        item.x1, item.y1, item.x2 += dx, item.y2 += dy\n      ]\n      : [item.x += dx, item.y += dy];\n\n    replacePathSeg(this.type, this.index, curPts);\n\n    if (this.next && this.next.ctrlpts) {\n      const next = this.next.item;\n      const nextPts = [next.x, next.y,\n        next.x1 += dx, next.y1 += dy, next.x2, next.y2];\n      replacePathSeg(this.next.type, this.next.index, nextPts);\n    }\n\n    if (this.mate) {\n      // The last point of a closed subpath has a 'mate',\n      // which is the 'M' segment of the subpath\n      const {item} = this.mate;\n      const pts = [item.x += dx, item.y += dy];\n      replacePathSeg(this.mate.type, this.mate.index, pts);\n      // Has no grip, so does not need 'updating'?\n    }\n\n    this.update(true);\n    if (this.next) { this.next.update(true); }\n  }\n\n  /**\n   * @param {Integer} num\n   * @returns {undefined}\n   */\n  setLinked (num) {\n    let seg, anum, pt;\n    if (num === 2) {\n      anum = 1;\n      seg = this.next;\n      if (!seg) { return; }\n      pt = this.item;\n    } else {\n      anum = 2;\n      seg = this.prev;\n      if (!seg) { return; }\n      pt = seg.item;\n    }\n\n    const {item} = seg;\n    item['x' + anum] = pt.x + (pt.x - this.item['x' + num]);\n    item['y' + anum] = pt.y + (pt.y - this.item['y' + num]);\n\n    const pts = [item.x, item.y,\n      item.x1, item.y1,\n      item.x2, item.y2];\n\n    replacePathSeg(seg.type, seg.index, pts);\n    seg.update(true);\n  }\n\n  /**\n   * @param {Integer} num\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  moveCtrl (num, dx, dy) {\n    const {item} = this;\n    item['x' + num] += dx;\n    item['y' + num] += dy;\n\n    const pts = [item.x, item.y,\n      item.x1, item.y1, item.x2, item.y2];\n\n    replacePathSeg(this.type, this.index, pts);\n    this.update(true);\n  }\n\n  /**\n   * @param {Integer} newType Possible values set during {@link module:path.init}\n   * @param {ArgumentsArray} pts\n   * @returns {undefined}\n   */\n  setType (newType, pts) {\n    replacePathSeg(newType, this.index, pts);\n    this.type = newType;\n    this.item = path.elem.pathSegList.getItem(this.index);\n    this.showCtrlPts(newType === 6);\n    this.ctrlpts = getControlPoints(this);\n    this.update(true);\n  }\n}\n\n/**\n*\n*/\nexport class Path {\n  /**\n  * @param {SVGPathElement} elem\n  * @throws {Error} If constructed without a path element\n  */\n  constructor (elem) {\n    if (!elem || elem.tagName !== 'path') {\n      throw new Error('svgedit.path.Path constructed without a <path> element');\n    }\n\n    this.elem = elem;\n    this.segs = [];\n    this.selected_pts = [];\n    path = this;\n\n    this.init();\n  }\n\n  /**\n  * Reset path data.\n  * @returns {module:path.Path}\n  */\n  init () {\n    // Hide all grips, etc\n\n    // fixed, needed to work on all found elements, not just first\n    $(getGripContainer()).find('*').each(function () {\n      $(this).attr('display', 'none');\n    });\n\n    const segList = this.elem.pathSegList;\n    const len = segList.numberOfItems;\n    this.segs = [];\n    this.selected_pts = [];\n    this.first_seg = null;\n\n    // Set up segs array\n    for (let i = 0; i < len; i++) {\n      const item = segList.getItem(i);\n      const segment = new Segment(i, item);\n      segment.path = this;\n      this.segs.push(segment);\n    }\n\n    const {segs} = this;\n\n    let startI = null;\n    for (let i = 0; i < len; i++) {\n      const seg = segs[i];\n      const nextSeg = (i + 1) >= len ? null : segs[i + 1];\n      const prevSeg = (i - 1) < 0 ? null : segs[i - 1];\n      if (seg.type === 2) {\n        if (prevSeg && prevSeg.type !== 1) {\n          // New sub-path, last one is open,\n          // so add a grip to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n        }\n        // Remember that this is a starter seg\n        startI = i;\n      } else if (nextSeg && nextSeg.type === 1) {\n        // This is the last real segment of a closed sub-path\n        // Next is first seg after \"M\"\n        seg.next = segs[startI + 1];\n\n        // First seg after \"M\"'s prev is this\n        seg.next.prev = seg;\n        seg.mate = segs[startI];\n        seg.addGrip();\n        if (this.first_seg == null) {\n          this.first_seg = seg;\n        }\n      } else if (!nextSeg) {\n        if (seg.type !== 1) {\n          // Last seg, doesn't close so add a grip\n          // to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n          seg.addGrip();\n\n          if (!this.first_seg) {\n            // Open path, so set first as real first and add grip\n            this.first_seg = segs[startI];\n          }\n        }\n      } else if (seg.type !== 1) {\n        // Regular segment, so add grip and its \"next\"\n        seg.addGrip();\n\n        // Don't set its \"next\" if it's an \"M\"\n        if (nextSeg && nextSeg.type !== 2) {\n          seg.next = nextSeg;\n          seg.next.prev = seg;\n        }\n      }\n    }\n    return this;\n  }\n\n  /**\n  * @callback module:path.PathEachSegCallback\n  * @this module:path.Segment\n  * @param {Integer} i The index of the seg being iterated\n  * @returns {boolean} Will stop execution of `eachSeg` if returns `false`\n  */\n  /**\n  * @param {module:path.PathEachSegCallback} fn\n  * @returns {undefined}\n  */\n  eachSeg (fn) {\n    const len = this.segs.length;\n    for (let i = 0; i < len; i++) {\n      const ret = fn.call(this.segs[i], i);\n      if (ret === false) { break; }\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  addSeg (index) {\n    // Adds a new segment\n    const seg = this.segs[index];\n    if (!seg.prev) { return; }\n\n    const {prev} = seg;\n    let newseg, newX, newY;\n    switch (seg.item.pathSegType) {\n    case 4: {\n      newX = (seg.item.x + prev.item.x) / 2;\n      newY = (seg.item.y + prev.item.y) / 2;\n      newseg = this.elem.createSVGPathSegLinetoAbs(newX, newY);\n      break;\n    } case 6: { // make it a curved segment to preserve the shape (WRS)\n      // https://en.wikipedia.org/wiki/De_Casteljau%27s_algorithm#Geometric_interpretation\n      const p0x = (prev.item.x + seg.item.x1) / 2;\n      const p1x = (seg.item.x1 + seg.item.x2) / 2;\n      const p2x = (seg.item.x2 + seg.item.x) / 2;\n      const p01x = (p0x + p1x) / 2;\n      const p12x = (p1x + p2x) / 2;\n      newX = (p01x + p12x) / 2;\n      const p0y = (prev.item.y + seg.item.y1) / 2;\n      const p1y = (seg.item.y1 + seg.item.y2) / 2;\n      const p2y = (seg.item.y2 + seg.item.y) / 2;\n      const p01y = (p0y + p1y) / 2;\n      const p12y = (p1y + p2y) / 2;\n      newY = (p01y + p12y) / 2;\n      newseg = this.elem.createSVGPathSegCurvetoCubicAbs(newX, newY, p0x, p0y, p01x, p01y);\n      const pts = [seg.item.x, seg.item.y, p12x, p12y, p2x, p2y];\n      replacePathSeg(seg.type, index, pts);\n      break;\n    }\n    }\n\n    insertItemBefore(this.elem, newseg, index);\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  deleteSeg (index) {\n    const seg = this.segs[index];\n    const list = this.elem.pathSegList;\n\n    seg.show(false);\n    const {next} = seg;\n    if (seg.mate) {\n      // Make the next point be the \"M\" point\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, next.index, pt);\n\n      // Reposition last node\n      replacePathSeg(4, seg.index, pt);\n\n      list.removeItem(seg.mate.index);\n    } else if (!seg.prev) {\n      // First node of open path, make next point the M\n      // const {item} = seg;\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, seg.next.index, pt);\n      list.removeItem(index);\n    } else {\n      list.removeItem(index);\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {boolean}\n  */\n  subpathIsClosed (index) {\n    let closed = false;\n    // Check if subpath is already open\n    path.eachSeg(function (i) {\n      if (i <= index) { return true; }\n      if (this.type === 2) {\n        // Found M first, so open\n        return false;\n      }\n      if (this.type === 1) {\n        // Found Z first, so closed\n        closed = true;\n        return false;\n      }\n    });\n\n    return closed;\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  removePtFromSelection (index) {\n    const pos = this.selected_pts.indexOf(index);\n    if (pos === -1) {\n      return;\n    }\n    this.segs[index].select(false);\n    this.selected_pts.splice(pos, 1);\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  clearSelection () {\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.select(false);\n    });\n    this.selected_pts = [];\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  storeD () {\n    this.last_d = this.elem.getAttribute('d');\n  }\n\n  /**\n  * @param {Integer} y\n  * @returns {undefined}\n  */\n  show (y) {\n    // Shows this path's segment grips\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.show(y);\n    });\n    if (y) {\n      this.selectPt(this.first_seg.index);\n    }\n    return this;\n  }\n\n  /**\n  * Move selected points.\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  movePts (dx, dy) {\n    let i = this.selected_pts.length;\n    while (i--) {\n      const seg = this.segs[this.selected_pts[i]];\n      seg.move(dx, dy);\n    }\n  }\n\n  /**\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  moveCtrl (dx, dy) {\n    const seg = this.segs[this.selected_pts[0]];\n    seg.moveCtrl(this.dragctrl, dx, dy);\n    if (linkControlPts) {\n      seg.setLinked(this.dragctrl);\n    }\n  }\n\n  /**\n  * @param {?Integer} newType See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n  * @returns {undefined}\n  */\n  setSegType (newType) {\n    this.storeD();\n    let i = this.selected_pts.length;\n    let text;\n    while (i--) {\n      const selPt = this.selected_pts[i];\n\n      // Selected seg\n      const cur = this.segs[selPt];\n      const {prev} = cur;\n      if (!prev) { continue; }\n\n      if (!newType) { // double-click, so just toggle\n        text = 'Toggle Path Segment Type';\n\n        // Toggle segment to curve/straight line\n        const oldType = cur.type;\n\n        newType = (oldType === 6) ? 4 : 6;\n      }\n\n      newType = Number(newType);\n\n      const curX = cur.item.x;\n      const curY = cur.item.y;\n      const prevX = prev.item.x;\n      const prevY = prev.item.y;\n      let points;\n      switch (newType) {\n      case 6: {\n        if (cur.olditem) {\n          const old = cur.olditem;\n          points = [curX, curY, old.x1, old.y1, old.x2, old.y2];\n        } else {\n          const diffX = curX - prevX;\n          const diffY = curY - prevY;\n          // get control points from straight line segment\n          /*\n          const ct1x = (prevX + (diffY/2));\n          const ct1y = (prevY - (diffX/2));\n          const ct2x = (curX + (diffY/2));\n          const ct2y = (curY - (diffX/2));\n          */\n          // create control points on the line to preserve the shape (WRS)\n          const ct1x = (prevX + (diffX / 3));\n          const ct1y = (prevY + (diffY / 3));\n          const ct2x = (curX - (diffX / 3));\n          const ct2y = (curY - (diffY / 3));\n          points = [curX, curY, ct1x, ct1y, ct2x, ct2y];\n        }\n        break;\n      } case 4: {\n        points = [curX, curY];\n\n        // Store original prevve segment nums\n        cur.olditem = cur.item;\n        break;\n      }\n      }\n\n      cur.setType(newType, points);\n    }\n    path.endChanges(text);\n  }\n\n  /**\n  * @param {Integer} pt\n  * @param {Integer} ctrlNum\n  * @returns {undefined}\n  */\n  selectPt (pt, ctrlNum) {\n    this.clearSelection();\n    if (pt == null) {\n      this.eachSeg(function (i) {\n        // 'this' is the segment here.\n        if (this.prev) {\n          pt = i;\n        }\n      });\n    }\n    this.addPtsToSelection(pt);\n    if (ctrlNum) {\n      this.dragctrl = ctrlNum;\n\n      if (linkControlPts) {\n        this.segs[pt].setLinked(ctrlNum);\n      }\n    }\n  }\n\n  /**\n  * Update position of all points.\n  * @returns {Path}\n  */\n  update () {\n    const {elem} = this;\n    if (getRotationAngle(elem)) {\n      this.matrix = getMatrix(elem);\n      this.imatrix = this.matrix.inverse();\n    } else {\n      this.matrix = null;\n      this.imatrix = null;\n    }\n\n    this.eachSeg(function (i) {\n      this.item = elem.pathSegList.getItem(i);\n      this.update();\n    });\n\n    return this;\n  }\n\n  /**\n  * @param {string} text\n  * @returns {undefined}\n  */\n  endChanges (text) {\n    if (isWebkit()) { editorContext_.resetD(this.elem); }\n    const cmd = new ChangeElementCommand(this.elem, {d: this.last_d}, text);\n    editorContext_.endChanges({cmd, elem: this.elem});\n  }\n\n  /**\n  * @param {Integer|Integer[]} indexes\n  * @returns {undefined}\n  */\n  addPtsToSelection (indexes) {\n    if (!Array.isArray(indexes)) { indexes = [indexes]; }\n    for (let i = 0; i < indexes.length; i++) {\n      const index = indexes[i];\n      const seg = this.segs[index];\n      if (seg.ptgrip) {\n        if (!this.selected_pts.includes(index) && index >= 0) {\n          this.selected_pts.push(index);\n        }\n      }\n    }\n    this.selected_pts.sort();\n    let i = this.selected_pts.length;\n    const grips = [];\n    grips.length = i;\n    // Loop through points to be selected and highlight each\n    while (i--) {\n      const pt = this.selected_pts[i];\n      const seg = this.segs[pt];\n      seg.select(true);\n      grips[i] = seg.ptgrip;\n    }\n\n    const closedSubpath = this.subpathIsClosed(this.selected_pts[0]);\n    editorContext_.addPtsToSelection({grips, closedSubpath});\n  }\n}\n\n/**\n* @function module:path.getPath_\n* @param {SVGPathElement} elem\n* @returns {module:path.Path}\n*/\nexport const getPath_ = function (elem) {\n  let p = pathData[elem.id];\n  if (!p) {\n    p = pathData[elem.id] = new Path(elem);\n  }\n  return p;\n};\n\n/**\n* @function module:path.removePath_\n* @param {string} id\n* @returns {undefined}\n*/\nexport const removePath_ = function (id) {\n  if (id in pathData) { delete pathData[id]; }\n};\n\nlet newcx, newcy, oldcx, oldcy, angle;\n\nconst getRotVals = function (x, y) {\n  let dx = x - oldcx;\n  let dy = y - oldcy;\n\n  // rotate the point around the old center\n  let r = Math.sqrt(dx * dx + dy * dy);\n  let theta = Math.atan2(dy, dx) + angle;\n  dx = r * Math.cos(theta) + oldcx;\n  dy = r * Math.sin(theta) + oldcy;\n\n  // dx,dy should now hold the actual coordinates of each\n  // point after being rotated\n\n  // now we want to rotate them around the new center in the reverse direction\n  dx -= newcx;\n  dy -= newcy;\n\n  r = Math.sqrt(dx * dx + dy * dy);\n  theta = Math.atan2(dy, dx) - angle;\n\n  return {x: r * Math.cos(theta) + newcx,\n    y: r * Math.sin(theta) + newcy};\n};\n\n// If the path was rotated, we must now pay the piper:\n// Every path point must be rotated into the rotated coordinate system of\n// its old center, then determine the new center, then rotate it back\n// This is because we want the path to remember its rotation\n\n/**\n* @function module:path.recalcRotatedPath\n* @todo This is still using ye olde transform methods, can probably\n* be optimized or even taken care of by `recalculateDimensions`\n* @returns {undefined}\n*/\nexport const recalcRotatedPath = function () {\n  const currentPath = path.elem;\n  angle = getRotationAngle(currentPath, true);\n  if (!angle) { return; }\n  // selectedBBoxes[0] = path.oldbbox;\n  const oldbox = path.oldbbox; // selectedBBoxes[0],\n  oldcx = oldbox.x + oldbox.width / 2;\n  oldcy = oldbox.y + oldbox.height / 2;\n  const box = getBBox(currentPath);\n  newcx = box.x + box.width / 2;\n  newcy = box.y + box.height / 2;\n\n  // un-rotate the new center to the proper position\n  const dx = newcx - oldcx,\n    dy = newcy - oldcy,\n    r = Math.sqrt(dx * dx + dy * dy),\n    theta = Math.atan2(dy, dx) + angle;\n\n  newcx = r * Math.cos(theta) + oldcx;\n  newcy = r * Math.sin(theta) + oldcy;\n\n  const list = currentPath.pathSegList;\n\n  let i = list.numberOfItems;\n  while (i) {\n    i -= 1;\n    const seg = list.getItem(i),\n      type = seg.pathSegType;\n    if (type === 1) { continue; }\n\n    const rvals = getRotVals(seg.x, seg.y),\n      points = [rvals.x, rvals.y];\n    if (seg.x1 != null && seg.x2 != null) {\n      const cVals1 = getRotVals(seg.x1, seg.y1);\n      const cVals2 = getRotVals(seg.x2, seg.y2);\n      points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);\n    }\n    replacePathSeg(type, i, points);\n  } // loop for each point\n\n  /* box = */ getBBox(currentPath);\n  // selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;\n  // selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;\n\n  // now we must set the new transform to be rotated around the new center\n  const Rnc = editorContext_.getSVGRoot().createSVGTransform(),\n    tlist = getTransformList(currentPath);\n  Rnc.setRotate((angle * 180.0 / Math.PI), newcx, newcy);\n  tlist.replaceItem(Rnc, 0);\n};\n\n// ====================================\n// Public API starts here\n\n/**\n* @function module:path.clearData\n* @returns {undefined}\n*/\nexport const clearData = function () {\n  pathData = {};\n};\n\n// Making public for mocking\n/**\n* @function module:path.reorientGrads\n* @param {Element} elem\n* @param {SVGMatrix} m\n* @returns {undefined}\n*/\nexport const reorientGrads = function (elem, m) {\n  const bb = utilsGetBBox(elem);\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = elem.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      const grad = getRefElem(attrVal);\n      if (grad.tagName === 'linearGradient') {\n        let x1 = grad.getAttribute('x1') || 0;\n        let y1 = grad.getAttribute('y1') || 0;\n        let x2 = grad.getAttribute('x2') || 1;\n        let y2 = grad.getAttribute('y2') || 0;\n\n        // Convert to USOU points\n        x1 = (bb.width * x1) + bb.x;\n        y1 = (bb.height * y1) + bb.y;\n        x2 = (bb.width * x2) + bb.x;\n        y2 = (bb.height * y2) + bb.y;\n\n        // Transform those points\n        const pt1 = transformPoint(x1, y1, m);\n        const pt2 = transformPoint(x2, y2, m);\n\n        // Convert back to BB points\n        const gCoords = {};\n\n        gCoords.x1 = (pt1.x - bb.x) / bb.width;\n        gCoords.y1 = (pt1.y - bb.y) / bb.height;\n        gCoords.x2 = (pt2.x - bb.x) / bb.width;\n        gCoords.y2 = (pt2.y - bb.y) / bb.height;\n\n        const newgrad = grad.cloneNode(true);\n        $(newgrad).attr(gCoords);\n\n        newgrad.id = editorContext_.getNextId();\n        findDefs().append(newgrad);\n        elem.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n    }\n  }\n};\n\n/**\n* This is how we map paths to our preferred relative segment types\n* @name module:path.pathMap\n* @type {GenericArray}\n*/\nconst pathMap = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];\n\n/**\n * Convert a path to one with only absolute or relative values.\n * @todo move to pathActions.js\n * @function module:path.convertPath\n * @param {SVGPathElement} path - the path to convert\n * @param {boolean} toRel - true of convert to relative\n * @returns {string}\n */\nexport const convertPath = function (path, toRel) {\n  const segList = path.pathSegList;\n  const len = segList.numberOfItems;\n  let curx = 0, cury = 0;\n  let d = '';\n  let lastM = null;\n\n  for (let i = 0; i < len; ++i) {\n    const seg = segList.getItem(i);\n    // if these properties are not in the segment, set them to zero\n    let x = seg.x || 0,\n      y = seg.y || 0,\n      x1 = seg.x1 || 0,\n      y1 = seg.y1 || 0,\n      x2 = seg.x2 || 0,\n      y2 = seg.y2 || 0;\n\n    const type = seg.pathSegType;\n    let letter = pathMap[type]['to' + (toRel ? 'Lower' : 'Upper') + 'Case']();\n\n    switch (type) {\n    case 1: // z,Z closepath (Z/z)\n      d += 'z';\n      if (lastM && !toRel) {\n        curx = lastM[0];\n        cury = lastM[1];\n      }\n      break;\n    case 12: // absolute horizontal line (H)\n      x -= curx;\n      // Fallthrough\n    case 13: // relative horizontal line (h)\n      if (toRel) {\n        curx += x;\n        letter = 'l';\n      } else {\n        x += curx;\n        curx = x;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[x, cury]]);\n      break;\n    case 14: // absolute vertical line (V)\n      y -= cury;\n      // Fallthrough\n    case 15: // relative vertical line (v)\n      if (toRel) {\n        cury += y;\n        letter = 'l';\n      } else {\n        y += cury;\n        cury = y;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[curx, y]]);\n      break;\n    case 2: // absolute move (M)\n    case 4: // absolute line (L)\n    case 18: // absolute smooth quad (T)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 5: // relative line (l)\n    case 3: // relative move (m)\n    case 19: // relative smooth quad (t)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      if (type === 2 || type === 3) { lastM = [curx, cury]; }\n\n      d += pathDSegment(letter, [[x, y]]);\n      break;\n    case 6: // absolute cubic (C)\n      x -= curx; x1 -= curx; x2 -= curx;\n      y -= cury; y1 -= cury; y2 -= cury;\n      // Fallthrough\n    case 7: // relative cubic (c)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx; x2 += curx;\n        y += cury; y1 += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x2, y2], [x, y]]);\n      break;\n    case 8: // absolute quad (Q)\n      x -= curx; x1 -= curx;\n      y -= cury; y1 -= cury;\n      // Fallthrough\n    case 9: // relative quad (q)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx;\n        y += cury; y1 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x, y]]);\n      break;\n    case 10: // absolute elliptical arc (A)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 11: // relative elliptical arc (a)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[seg.r1, seg.r2]], [\n        seg.angle,\n        (seg.largeArcFlag ? 1 : 0),\n        (seg.sweepFlag ? 1 : 0)\n      ], [x, y]);\n      break;\n    case 16: // absolute smooth cubic (S)\n      x -= curx; x2 -= curx;\n      y -= cury; y2 -= cury;\n      // Fallthrough\n    case 17: // relative smooth cubic (s)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x2 += curx;\n        y += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x2, y2], [x, y]]);\n      break;\n    } // switch on path segment type\n  } // for each segment\n  return d;\n};\n\n/**\n * TODO: refactor callers in `convertPath` to use `getPathDFromSegments` instead of this function.\n * Legacy code refactored from `svgcanvas.pathActions.convertPath`.\n * @param {string} letter - path segment command (letter in potentially either case from {@link module:path.pathMap}; see [SVGPathSeg#pathSegTypeAsLetter]{@link https://www.w3.org/TR/SVG/single-page.html#paths-__svg__SVGPathSeg__pathSegTypeAsLetter})\n * @param {GenericArray<GenericArray<Integer>>} points - x,y points\n * @param {GenericArray<GenericArray<Integer>>} [morePoints] - x,y points\n * @param {Integer[]} [lastPoint] - x,y point\n * @returns {string}\n */\nfunction pathDSegment (letter, points, morePoints, lastPoint) {\n  $.each(points, function (i, pnt) {\n    points[i] = shortFloat(pnt);\n  });\n  let segment = letter + points.join(' ');\n  if (morePoints) {\n    segment += ' ' + morePoints.join(' ');\n  }\n  if (lastPoint) {\n    segment += ' ' + shortFloat(lastPoint);\n  }\n  return segment;\n}\n\n/**\n* Group: Path edit functions\n* Functions relating to editing path elements\n* @namespace {PlainObject} pathActions\n* @memberof module:path\n*/\nexport const pathActions = (function () {\n  let subpath = false;\n  let newPoint, firstCtrl;\n\n  let currentPath = null;\n  let hasMoved = false;\n  // No `editorContext_` yet but should be ok as is `null` by default\n  // editorContext_.setDrawnPath(null);\n\n  /**\n  * This function converts a polyline (created by the fh_path tool) into\n  * a path element and coverts every three line segments into a single bezier\n  * curve in an attempt to smooth out the free-hand.\n  * @function smoothPolylineIntoPath\n  * @param {Element} element\n  * @returns {Element}\n  */\n  const smoothPolylineIntoPath = function (element) {\n    let i;\n    const {points} = element;\n    const N = points.numberOfItems;\n    if (N >= 4) {\n      // loop through every 3 points and convert to a cubic bezier curve segment\n      //\n      // NOTE: this is cheating, it means that every 3 points has the potential to\n      // be a corner instead of treating each point in an equal manner. In general,\n      // this technique does not look that good.\n      //\n      // I am open to better ideas!\n      //\n      // Reading:\n      // - http://www.efg2.com/Lab/Graphics/Jean-YvesQueinecBezierCurves.htm\n      // - https://www.codeproject.com/KB/graphics/BezierSpline.aspx?msg=2956963\n      // - https://www.ian-ko.com/ET_GeoWizards/UserGuide/smooth.htm\n      // - https://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html\n      let curpos = points.getItem(0), prevCtlPt = null;\n      let d = [];\n      d.push(['M', curpos.x, ',', curpos.y, ' C'].join(''));\n      for (i = 1; i <= (N - 4); i += 3) {\n        let ct1 = points.getItem(i);\n        const ct2 = points.getItem(i + 1);\n        const end = points.getItem(i + 2);\n\n        // if the previous segment had a control point, we want to smooth out\n        // the control points on both sides\n        if (prevCtlPt) {\n          const newpts = smoothControlPoints(prevCtlPt, ct1, curpos);\n          if (newpts && newpts.length === 2) {\n            const prevArr = d[d.length - 1].split(',');\n            prevArr[2] = newpts[0].x;\n            prevArr[3] = newpts[0].y;\n            d[d.length - 1] = prevArr.join(',');\n            ct1 = newpts[1];\n          }\n        }\n\n        d.push([ct1.x, ct1.y, ct2.x, ct2.y, end.x, end.y].join(','));\n\n        curpos = end;\n        prevCtlPt = ct2;\n      }\n      // handle remaining line segments\n      d.push('L');\n      while (i < N) {\n        const pt = points.getItem(i);\n        d.push([pt.x, pt.y].join(','));\n        i++;\n      }\n      d = d.join(' ');\n\n      // create new path element\n      element = editorContext_.addSVGElementFromJson({\n        element: 'path',\n        curStyles: true,\n        attr: {\n          id: editorContext_.getId(),\n          d,\n          fill: 'none'\n        }\n      });\n      // No need to call \"changed\", as this is already done under mouseUp\n    }\n    return element;\n  };\n\n  return (/** @lends module:path.pathActions */ {\n    /**\n    * @param {MouseEvent} evt\n    * @param {Element} mouseTarget\n    * @param {Float} startX\n    * @param {Float} startY\n    * @returns {undefined}\n    */\n    mouseDown (evt, mouseTarget, startX, startY) {\n      let id;\n      if (editorContext_.getCurrentMode() === 'path') {\n        let mouseX = startX; // Was this meant to work with the other `mouseX`? (was defined globally so adding `let` to at least avoid a global)\n        let mouseY = startY; // Was this meant to work with the other `mouseY`? (was defined globally so adding `let` to at least avoid a global)\n\n        const currentZoom = editorContext_.getCurrentZoom();\n        let x = mouseX / currentZoom,\n          y = mouseY / currentZoom,\n          stretchy = getElem('path_stretch_line');\n        newPoint = [x, y];\n\n        if (editorContext_.getGridSnapping()) {\n          x = snapToGrid(x);\n          y = snapToGrid(y);\n          mouseX = snapToGrid(mouseX);\n          mouseY = snapToGrid(mouseY);\n        }\n\n        if (!stretchy) {\n          stretchy = document.createElementNS(NS.SVG, 'path');\n          assignAttributes(stretchy, {\n            id: 'path_stretch_line',\n            stroke: '#22C',\n            'stroke-width': '0.5',\n            fill: 'none'\n          });\n          stretchy = getElem('selectorParentGroup').appendChild(stretchy);\n        }\n        stretchy.setAttribute('display', 'inline');\n\n        let keep = null;\n        let index;\n        // if pts array is empty, create path element with M at current point\n        const drawnPath = editorContext_.getDrawnPath();\n        if (!drawnPath) {\n          const dAttr = 'M' + x + ',' + y + ' '; // Was this meant to work with the other `dAttr`? (was defined globally so adding `var` to at least avoid a global)\n          /* drawnPath = */ editorContext_.setDrawnPath(editorContext_.addSVGElementFromJson({\n            element: 'path',\n            curStyles: true,\n            attr: {\n              d: dAttr,\n              id: editorContext_.getNextId(),\n              opacity: editorContext_.getOpacity() / 2\n            }\n          }));\n          // set stretchy line to first point\n          stretchy.setAttribute('d', ['M', mouseX, mouseY, mouseX, mouseY].join(' '));\n          index = subpath ? path.segs.length : 0;\n          addPointGrip(index, mouseX, mouseY);\n        } else {\n          // determine if we clicked on an existing point\n          const seglist = drawnPath.pathSegList;\n          let i = seglist.numberOfItems;\n          const FUZZ = 6 / currentZoom;\n          let clickOnPoint = false;\n          while (i) {\n            i--;\n            const item = seglist.getItem(i);\n            const px = item.x, py = item.y;\n            // found a matching point\n            if (x >= (px - FUZZ) && x <= (px + FUZZ) &&\n              y >= (py - FUZZ) && y <= (py + FUZZ)\n            ) {\n              clickOnPoint = true;\n              break;\n            }\n          }\n\n          // get path element that we are in the process of creating\n          id = editorContext_.getId();\n\n          // Remove previous path object if previously created\n          removePath_(id);\n\n          const newpath = getElem(id);\n          let newseg;\n          let sSeg;\n          const len = seglist.numberOfItems;\n          // if we clicked on an existing point, then we are done this path, commit it\n          // (i, i+1) are the x,y that were clicked on\n          if (clickOnPoint) {\n            // if clicked on any other point but the first OR\n            // the first point was clicked on and there are less than 3 points\n            // then leave the path open\n            // otherwise, close the path\n            if (i <= 1 && len >= 2) {\n              // Create end segment\n              const absX = seglist.getItem(0).x;\n              const absY = seglist.getItem(0).y;\n\n              sSeg = stretchy.pathSegList.getItem(1);\n              if (sSeg.pathSegType === 4) {\n                newseg = drawnPath.createSVGPathSegLinetoAbs(absX, absY);\n              } else {\n                newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                  absX,\n                  absY,\n                  sSeg.x1 / currentZoom,\n                  sSeg.y1 / currentZoom,\n                  absX,\n                  absY\n                );\n              }\n\n              const endseg = drawnPath.createSVGPathSegClosePath();\n              seglist.appendItem(newseg);\n              seglist.appendItem(endseg);\n            } else if (len < 3) {\n              keep = false;\n              return keep;\n            }\n            $(stretchy).remove();\n\n            // This will signal to commit the path\n            // const element = newpath; // Other event handlers define own `element`, so this was probably not meant to interact with them or one which shares state (as there were none); I therefore adding a missing `var` to avoid a global\n            /* drawnPath = */ editorContext_.setDrawnPath(null);\n            editorContext_.setStarted(false);\n\n            if (subpath) {\n              if (path.matrix) {\n                editorContext_.remapElement(newpath, {}, path.matrix.inverse());\n              }\n\n              const newD = newpath.getAttribute('d');\n              const origD = $(path.elem).attr('d');\n              $(path.elem).attr('d', origD + newD);\n              $(newpath).remove();\n              if (path.matrix) {\n                recalcRotatedPath();\n              }\n              init();\n              pathActions.toEditMode(path.elem);\n              path.selectPt();\n              return false;\n            }\n          // else, create a new point, update path element\n          } else {\n            // Checks if current target or parents are #svgcontent\n            if (!$.contains(\n              editorContext_.getContainer(),\n              editorContext_.getMouseTarget(evt)\n            )) {\n              // Clicked outside canvas, so don't make point\n              console.log('Clicked outside canvas');\n              return false;\n            }\n\n            const num = drawnPath.pathSegList.numberOfItems;\n            const last = drawnPath.pathSegList.getItem(num - 1);\n            const lastx = last.x, lasty = last.y;\n\n            if (evt.shiftKey) {\n              const xya = snapToAngle(lastx, lasty, x, y);\n              ({x, y} = xya);\n            }\n\n            // Use the segment defined by stretchy\n            sSeg = stretchy.pathSegList.getItem(1);\n            if (sSeg.pathSegType === 4) {\n              newseg = drawnPath.createSVGPathSegLinetoAbs(\n                editorContext_.round(x),\n                editorContext_.round(y)\n              );\n            } else {\n              newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                editorContext_.round(x),\n                editorContext_.round(y),\n                sSeg.x1 / currentZoom,\n                sSeg.y1 / currentZoom,\n                sSeg.x2 / currentZoom,\n                sSeg.y2 / currentZoom\n              );\n            }\n\n            drawnPath.pathSegList.appendItem(newseg);\n\n            x *= currentZoom;\n            y *= currentZoom;\n\n            // set stretchy line to latest point\n            stretchy.setAttribute('d', ['M', x, y, x, y].join(' '));\n            index = num;\n            if (subpath) { index += path.segs.length; }\n            addPointGrip(index, x, y);\n          }\n          // keep = true;\n        }\n\n        return;\n      }\n\n      // TODO: Make sure currentPath isn't null at this point\n      if (!path) { return; }\n\n      path.storeD();\n\n      ({id} = evt.target);\n      let curPt;\n      if (id.substr(0, 14) === 'pathpointgrip_') {\n        // Select this point\n        curPt = path.cur_pt = parseInt(id.substr(14), 10);\n        path.dragging = [startX, startY];\n        const seg = path.segs[curPt];\n\n        // only clear selection if shift is not pressed (otherwise, add\n        // node to selection)\n        if (!evt.shiftKey) {\n          if (path.selected_pts.length <= 1 || !seg.selected) {\n            path.clearSelection();\n          }\n          path.addPtsToSelection(curPt);\n        } else if (seg.selected) {\n          path.removePtFromSelection(curPt);\n        } else {\n          path.addPtsToSelection(curPt);\n        }\n      } else if (id.startsWith('ctrlpointgrip_')) {\n        path.dragging = [startX, startY];\n\n        const parts = id.split('_')[1].split('c');\n        curPt = Number(parts[0]);\n        const ctrlNum = Number(parts[1]);\n        path.selectPt(curPt, ctrlNum);\n      }\n\n      // Start selection box\n      if (!path.dragging) {\n        let rubberBox = editorContext_.getRubberBox();\n        if (rubberBox == null) {\n          rubberBox = editorContext_.setRubberBox(\n            editorContext_.selectorManager.getRubberBandBox()\n          );\n        }\n        const currentZoom = editorContext_.getCurrentZoom();\n        assignAttributes(rubberBox, {\n          x: startX * currentZoom,\n          y: startY * currentZoom,\n          width: 0,\n          height: 0,\n          display: 'inline'\n        }, 100);\n      }\n    },\n    /**\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {undefined}\n    */\n    mouseMove (mouseX, mouseY) {\n      const currentZoom = editorContext_.getCurrentZoom();\n      hasMoved = true;\n      const drawnPath = editorContext_.getDrawnPath();\n      if (editorContext_.getCurrentMode() === 'path') {\n        if (!drawnPath) { return; }\n        const seglist = drawnPath.pathSegList;\n        const index = seglist.numberOfItems - 1;\n\n        if (newPoint) {\n          // First point\n          // if (!index) { return; }\n\n          // Set control points\n          const pointGrip1 = addCtrlGrip('1c1');\n          const pointGrip2 = addCtrlGrip('0c2');\n\n          // dragging pointGrip1\n          pointGrip1.setAttribute('cx', mouseX);\n          pointGrip1.setAttribute('cy', mouseY);\n          pointGrip1.setAttribute('display', 'inline');\n\n          const ptX = newPoint[0];\n          const ptY = newPoint[1];\n\n          // set curve\n          // const seg = seglist.getItem(index);\n          const curX = mouseX / currentZoom;\n          const curY = mouseY / currentZoom;\n          const altX = (ptX + (ptX - curX));\n          const altY = (ptY + (ptY - curY));\n\n          pointGrip2.setAttribute('cx', altX * currentZoom);\n          pointGrip2.setAttribute('cy', altY * currentZoom);\n          pointGrip2.setAttribute('display', 'inline');\n\n          const ctrlLine = getCtrlLine(1);\n          assignAttributes(ctrlLine, {\n            x1: mouseX,\n            y1: mouseY,\n            x2: altX * currentZoom,\n            y2: altY * currentZoom,\n            display: 'inline'\n          });\n\n          if (index === 0) {\n            firstCtrl = [mouseX, mouseY];\n          } else {\n            const last = seglist.getItem(index - 1);\n            let lastX = last.x;\n            let lastY = last.y;\n\n            if (last.pathSegType === 6) {\n              lastX += (lastX - last.x2);\n              lastY += (lastY - last.y2);\n            } else if (firstCtrl) {\n              lastX = firstCtrl[0] / currentZoom;\n              lastY = firstCtrl[1] / currentZoom;\n            }\n            replacePathSeg(6, index, [ptX, ptY, lastX, lastY, altX, altY], drawnPath);\n          }\n        } else {\n          const stretchy = getElem('path_stretch_line');\n          if (stretchy) {\n            const prev = seglist.getItem(index);\n            if (prev.pathSegType === 6) {\n              const prevX = prev.x + (prev.x - prev.x2);\n              const prevY = prev.y + (prev.y - prev.y2);\n              replacePathSeg(6, 1, [mouseX, mouseY, prevX * currentZoom, prevY * currentZoom, mouseX, mouseY], stretchy);\n            } else if (firstCtrl) {\n              replacePathSeg(6, 1, [mouseX, mouseY, firstCtrl[0], firstCtrl[1], mouseX, mouseY], stretchy);\n            } else {\n              replacePathSeg(4, 1, [mouseX, mouseY], stretchy);\n            }\n          }\n        }\n        return;\n      }\n      // if we are dragging a point, let's move it\n      if (path.dragging) {\n        const pt = getPointFromGrip({\n          x: path.dragging[0],\n          y: path.dragging[1]\n        }, path);\n        const mpt = getPointFromGrip({\n          x: mouseX,\n          y: mouseY\n        }, path);\n        const diffX = mpt.x - pt.x;\n        const diffY = mpt.y - pt.y;\n        path.dragging = [mouseX, mouseY];\n\n        if (path.dragctrl) {\n          path.moveCtrl(diffX, diffY);\n        } else {\n          path.movePts(diffX, diffY);\n        }\n      } else {\n        path.selected_pts = [];\n        path.eachSeg(function (i) {\n          const seg = this;\n          if (!seg.next && !seg.prev) { return; }\n\n          // const {item} = seg;\n          const rubberBox = editorContext_.getRubberBox();\n          const rbb = rubberBox.getBBox();\n\n          const pt = getGripPt(seg);\n          const ptBb = {\n            x: pt.x,\n            y: pt.y,\n            width: 0,\n            height: 0\n          };\n\n          const sel = rectsIntersect(rbb, ptBb);\n\n          this.select(sel);\n          // Note that addPtsToSelection is not being run\n          if (sel) { path.selected_pts.push(seg.index); }\n        });\n      }\n    },\n    /**\n    * @param {Event} evt\n    * @param {Element} element\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {undefined}\n    */\n    mouseUp (evt, element, mouseX, mouseY) {\n      const drawnPath = editorContext_.getDrawnPath();\n      // Create mode\n      if (editorContext_.getCurrentMode() === 'path') {\n        newPoint = null;\n        if (!drawnPath) {\n          element = getElem(editorContext_.getId());\n          editorContext_.setStarted(false);\n          firstCtrl = null;\n        }\n\n        return {\n          keep: true,\n          element\n        };\n      }\n\n      // Edit mode\n      const rubberBox = editorContext_.getRubberBox();\n      if (path.dragging) {\n        const lastPt = path.cur_pt;\n\n        path.dragging = false;\n        path.dragctrl = false;\n        path.update();\n\n        if (hasMoved) {\n          path.endChanges('Move path point(s)');\n        }\n\n        if (!evt.shiftKey && !hasMoved) {\n          path.selectPt(lastPt);\n        }\n      } else if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n        // Done with multi-node-select\n        rubberBox.setAttribute('display', 'none');\n\n        if (rubberBox.getAttribute('width') <= 2 && rubberBox.getAttribute('height') <= 2) {\n          pathActions.toSelectMode(evt.target);\n        }\n\n      // else, move back to select mode\n      } else {\n        pathActions.toSelectMode(evt.target);\n      }\n      hasMoved = false;\n    },\n    /**\n    * @param {Element} element\n    * @returns {undefined}\n    */\n    toEditMode (element) {\n      path = getPath_(element);\n      editorContext_.setCurrentMode('pathedit');\n      editorContext_.clearSelection();\n      path.show(true).update();\n      path.oldbbox = utilsGetBBox(path.elem);\n      subpath = false;\n    },\n    /**\n    * @param {Element} elem\n    * @fires module:svgcanvas.SvgCanvas#event:selected\n    * @returns {undefined}\n    */\n    toSelectMode (elem) {\n      const selPath = (elem === path.elem);\n      editorContext_.setCurrentMode('select');\n      path.show(false);\n      currentPath = false;\n      editorContext_.clearSelection();\n\n      if (path.matrix) {\n        // Rotated, so may need to re-calculate the center\n        recalcRotatedPath();\n      }\n\n      if (selPath) {\n        editorContext_.call('selected', [elem]);\n        editorContext_.addToSelection([elem], true);\n      }\n    },\n    /**\n    * @param {boolean} on\n    * @returns {undefined}\n    */\n    addSubPath (on) {\n      if (on) {\n        // Internally we go into \"path\" mode, but in the UI it will\n        // still appear as if in \"pathedit\" mode.\n        editorContext_.setCurrentMode('path');\n        subpath = true;\n      } else {\n        pathActions.clear(true);\n        pathActions.toEditMode(path.elem);\n      }\n    },\n    /**\n    * @param {Element} target\n    * @returns {undefined}\n    */\n    select (target) {\n      if (currentPath === target) {\n        pathActions.toEditMode(target);\n        editorContext_.setCurrentMode('pathedit');\n      // going into pathedit mode\n      } else {\n        currentPath = target;\n      }\n    },\n    /**\n    * @fires module:svgcanvas.SvgCanvas#event:changed\n    * @returns {undefined}\n    */\n    reorient () {\n      const elem = editorContext_.getSelectedElements()[0];\n      if (!elem) { return; }\n      const angle = getRotationAngle(elem);\n      if (angle === 0) { return; }\n\n      const batchCmd = new BatchCommand('Reorient path');\n      const changes = {\n        d: elem.getAttribute('d'),\n        transform: elem.getAttribute('transform')\n      };\n      batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n      editorContext_.clearSelection();\n      this.resetOrientation(elem);\n\n      editorContext_.addCommandToHistory(batchCmd);\n\n      // Set matrix to null\n      getPath_(elem).show(false).matrix = null;\n\n      this.clear();\n\n      editorContext_.addToSelection([elem], true);\n      editorContext_.call('changed', editorContext_.getSelectedElements());\n    },\n\n    /**\n    * @param {boolean} remove Not in use\n    * @returns {undefined}\n    */\n    clear (remove) {\n      const drawnPath = editorContext_.getDrawnPath();\n      currentPath = null;\n      if (drawnPath) {\n        const elem = getElem(editorContext_.getId());\n        $(getElem('path_stretch_line')).remove();\n        $(elem).remove();\n        $(getElem('pathpointgrip_container')).find('*').attr('display', 'none');\n        firstCtrl = null;\n        editorContext_.setDrawnPath(null);\n        editorContext_.setStarted(false);\n      } else if (editorContext_.getCurrentMode() === 'pathedit') {\n        this.toSelectMode();\n      }\n      if (path) { path.init().show(false); }\n    },\n    /**\n    * @param {?(Element|SVGPathElement)} pth\n    * @returns {false|undefined}\n    */\n    resetOrientation (pth) {\n      if (pth == null || pth.nodeName !== 'path') { return false; }\n      const tlist = getTransformList(pth);\n      const m = transformListToTransform(tlist).matrix;\n      tlist.clear();\n      pth.removeAttribute('transform');\n      const segList = pth.pathSegList;\n\n      // Opera/win/non-EN throws an error here.\n      // TODO: Find out why!\n      // Presumed fixed in Opera 10.5, so commented out for now\n\n      // try {\n      const len = segList.numberOfItems;\n      // } catch(err) {\n      //   const fixed_d = pathActions.convertPath(pth);\n      //   pth.setAttribute('d', fixed_d);\n      //   segList = pth.pathSegList;\n      //   const len = segList.numberOfItems;\n      // }\n      // let lastX, lastY;\n      for (let i = 0; i < len; ++i) {\n        const seg = segList.getItem(i);\n        const type = seg.pathSegType;\n        if (type === 1) { continue; }\n        const pts = [];\n        $.each(['', 1, 2], function (j, n) {\n          const x = seg['x' + n], y = seg['y' + n];\n          if (x !== undefined && y !== undefined) {\n            const pt = transformPoint(x, y, m);\n            pts.splice(pts.length, 0, pt.x, pt.y);\n          }\n        });\n        replacePathSeg(type, i, pts, pth);\n      }\n\n      reorientGrads(pth, m);\n    },\n    /**\n    * @returns {undefined}\n    */\n    zoomChange () {\n      if (editorContext_.getCurrentMode() === 'pathedit') {\n        path.update();\n      }\n    },\n    /**\n    * @typedef {PlainObject} module:path.NodePoint\n    * @property {Float} x\n    * @property {Float} y\n    * @property {Integer} type\n    */\n    /**\n    * @returns {module:path.NodePoint}\n    */\n    getNodePoint () {\n      const selPt = path.selected_pts.length ? path.selected_pts[0] : 1;\n\n      const seg = path.segs[selPt];\n      return {\n        x: seg.item.x,\n        y: seg.item.y,\n        type: seg.type\n      };\n    },\n    /**\n    * @param {boolean} linkPoints\n    * @returns {undefined}\n    */\n    linkControlPoints (linkPoints) {\n      setLinkControlPoints(linkPoints);\n    },\n    /**\n    * @returns {undefined}\n    */\n    clonePathNode () {\n      path.storeD();\n\n      const selPts = path.selected_pts;\n      // const {segs} = path;\n\n      let i = selPts.length;\n      const nums = [];\n\n      while (i--) {\n        const pt = selPts[i];\n        path.addSeg(pt);\n\n        nums.push(pt + i);\n        nums.push(pt + i + 1);\n      }\n      path.init().addPtsToSelection(nums);\n\n      path.endChanges('Clone path node(s)');\n    },\n    /**\n    * @returns {undefined}\n    */\n    opencloseSubPath () {\n      const selPts = path.selected_pts;\n      // Only allow one selected node for now\n      if (selPts.length !== 1) { return; }\n\n      const {elem} = path;\n      const list = elem.pathSegList;\n\n      // const len = list.numberOfItems;\n\n      const index = selPts[0];\n\n      let openPt = null;\n      let startItem = null;\n\n      // Check if subpath is already open\n      path.eachSeg(function (i) {\n        if (this.type === 2 && i <= index) {\n          startItem = this.item;\n        }\n        if (i <= index) { return true; }\n        if (this.type === 2) {\n          // Found M first, so open\n          openPt = i;\n          return false;\n        }\n        if (this.type === 1) {\n          // Found Z first, so closed\n          openPt = false;\n          return false;\n        }\n      });\n\n      if (openPt == null) {\n        // Single path, so close last seg\n        openPt = path.segs.length - 1;\n      }\n\n      if (openPt !== false) {\n        // Close this path\n\n        // Create a line going to the previous \"M\"\n        const newseg = elem.createSVGPathSegLinetoAbs(startItem.x, startItem.y);\n\n        const closer = elem.createSVGPathSegClosePath();\n        if (openPt === path.segs.length - 1) {\n          list.appendItem(newseg);\n          list.appendItem(closer);\n        } else {\n          insertItemBefore(elem, closer, openPt);\n          insertItemBefore(elem, newseg, openPt);\n        }\n\n        path.init().selectPt(openPt + 1);\n        return;\n      }\n\n      // M 1,1 L 2,2 L 3,3 L 1,1 z // open at 2,2\n      // M 2,2 L 3,3 L 1,1\n\n      // M 1,1 L 2,2 L 1,1 z M 4,4 L 5,5 L6,6 L 5,5 z\n      // M 1,1 L 2,2 L 1,1 z [M 4,4] L 5,5 L(M)6,6 L 5,5 z\n\n      const seg = path.segs[index];\n\n      if (seg.mate) {\n        list.removeItem(index); // Removes last \"L\"\n        list.removeItem(index); // Removes the \"Z\"\n        path.init().selectPt(index - 1);\n        return;\n      }\n\n      let lastM, zSeg;\n\n      // Find this sub-path's closing point and remove\n      for (let i = 0; i < list.numberOfItems; i++) {\n        const item = list.getItem(i);\n\n        if (item.pathSegType === 2) {\n          // Find the preceding M\n          lastM = i;\n        } else if (i === index) {\n          // Remove it\n          list.removeItem(lastM);\n          // index--;\n        } else if (item.pathSegType === 1 && index < i) {\n          // Remove the closing seg of this subpath\n          zSeg = i - 1;\n          list.removeItem(i);\n          break;\n        }\n      }\n\n      let num = (index - lastM) - 1;\n\n      while (num--) {\n        insertItemBefore(elem, list.getItem(lastM), zSeg);\n      }\n\n      const pt = list.getItem(lastM);\n\n      // Make this point the new \"M\"\n      replacePathSeg(2, lastM, [pt.x, pt.y]);\n\n      // i = index; // i is local here, so has no effect; what was the intent for this?\n\n      path.init().selectPt(0);\n    },\n    /**\n    * @returns {undefined}\n    */\n    deletePathNode () {\n      if (!pathActions.canDeleteNodes) { return; }\n      path.storeD();\n\n      const selPts = path.selected_pts;\n\n      let i = selPts.length;\n      while (i--) {\n        const pt = selPts[i];\n        path.deleteSeg(pt);\n      }\n\n      // Cleanup\n      const cleanup = function () {\n        const segList = path.elem.pathSegList;\n        let len = segList.numberOfItems;\n\n        const remItems = function (pos, count) {\n          while (count--) {\n            segList.removeItem(pos);\n          }\n        };\n\n        if (len <= 1) { return true; }\n\n        while (len--) {\n          const item = segList.getItem(len);\n          if (item.pathSegType === 1) {\n            const prev = segList.getItem(len - 1);\n            const nprev = segList.getItem(len - 2);\n            if (prev.pathSegType === 2) {\n              remItems(len - 1, 2);\n              cleanup();\n              break;\n            } else if (nprev.pathSegType === 2) {\n              remItems(len - 2, 3);\n              cleanup();\n              break;\n            }\n          } else if (item.pathSegType === 2) {\n            if (len > 0) {\n              const prevType = segList.getItem(len - 1).pathSegType;\n              // Path has M M\n              if (prevType === 2) {\n                remItems(len - 1, 1);\n                cleanup();\n                break;\n              // Entire path ends with Z M\n              } else if (prevType === 1 && segList.numberOfItems - 1 === len) {\n                remItems(len, 1);\n                cleanup();\n                break;\n              }\n            }\n          }\n        }\n        return false;\n      };\n\n      cleanup();\n\n      // Completely delete a path with 1 or 0 segments\n      if (path.elem.pathSegList.numberOfItems <= 1) {\n        pathActions.toSelectMode(path.elem);\n        editorContext_.canvas.deleteSelectedElements();\n        return;\n      }\n\n      path.init();\n      path.clearSelection();\n\n      // TODO: Find right way to select point now\n      // path.selectPt(selPt);\n      if (window.opera) { // Opera repaints incorrectly\n        const cp = $(path.elem);\n        cp.attr('d', cp.attr('d'));\n      }\n      path.endChanges('Delete path node(s)');\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Smooth polyline into path\n    * @function module:path.pathActions.smoothPolylineIntoPath\n    * @see module:path~smoothPolylineIntoPath\n    */\n    smoothPolylineIntoPath,\n    /**\n    * @param {?Integer} v See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n    * @returns {undefined}\n    */\n    setSegType (v) {\n      path.setSegType(v);\n    },\n    /**\n    * @param {string} attr\n    * @param {Float} newValue\n    * @returns {undefined}\n    */\n    moveNode (attr, newValue) {\n      const selPts = path.selected_pts;\n      if (!selPts.length) { return; }\n\n      path.storeD();\n\n      // Get first selected point\n      const seg = path.segs[selPts[0]];\n      const diff = {x: 0, y: 0};\n      diff[attr] = newValue - seg.item[attr];\n\n      seg.move(diff.x, diff.y);\n      path.endChanges('Move path point');\n    },\n    /**\n    * @param {Element} elem\n    * @returns {undefined}\n    */\n    fixEnd (elem) {\n      // Adds an extra segment if the last seg before a Z doesn't end\n      // at its M point\n      // M0,0 L0,100 L100,100 z\n      const segList = elem.pathSegList;\n      const len = segList.numberOfItems;\n      let lastM;\n      for (let i = 0; i < len; ++i) {\n        const item = segList.getItem(i);\n        if (item.pathSegType === 2) {\n          lastM = item;\n        }\n\n        if (item.pathSegType === 1) {\n          const prev = segList.getItem(i - 1);\n          if (prev.x !== lastM.x || prev.y !== lastM.y) {\n            // Add an L segment here\n            const newseg = elem.createSVGPathSegLinetoAbs(lastM.x, lastM.y);\n            insertItemBefore(elem, newseg, i);\n            // Can this be done better?\n            pathActions.fixEnd(elem);\n            break;\n          }\n        }\n      }\n      if (isWebkit()) { editorContext_.resetD(elem); }\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Convert a path to one with only absolute or relative values\n    * @function module:path.pathActions.convertPath\n    * @see module:path.convertPath\n    */\n    convertPath\n  });\n})();\n// end pathActions\n","/**\n * Mathematical utilities\n * @module math\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\n/**\n* @typedef {PlainObject} module:math.AngleCoord45\n* @property {Float} x - The angle-snapped x value\n* @property {Float} y - The angle-snapped y value\n* @property {Integer} a - The angle at which to snap\n*/\n\n/**\n* @typedef {PlainObject} module:math.XYObject\n* @property {Float} x\n* @property {Float} y\n*/\n\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\n\n// Constants\nconst NEAR_ZERO = 1e-14;\n\n// Throw away SVGSVGElement used for creating matrices/transforms.\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n/**\n * A (hopefully) quicker function to transform a point by a matrix\n * (this function avoids any DOM calls and just does the math).\n * @function module:math.transformPoint\n * @param {Float} x - Float representing the x coordinate\n * @param {Float} y - Float representing the y coordinate\n * @param {SVGMatrix} m - Matrix object to transform the point with\n * @returns {module:math.XYObject} An x, y object representing the transformed point\n*/\nexport const transformPoint = function (x, y, m) {\n  return {x: m.a * x + m.c * y + m.e, y: m.b * x + m.d * y + m.f};\n};\n\n/**\n * Helper function to check if the matrix performs no actual transform\n * (i.e. exists for identity purposes).\n * @function module:math.isIdentity\n * @param {SVGMatrix} m - The matrix object to check\n * @returns {boolean} Indicates whether or not the matrix is 1,0,0,1,0,0\n*/\nexport const isIdentity = function (m) {\n  return (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && m.e === 0 && m.f === 0);\n};\n\n/**\n * This function tries to return a `SVGMatrix` that is the multiplication `m1 * m2`.\n * We also round to zero when it's near zero.\n * @function module:math.matrixMultiply\n * @param {...SVGMatrix} args - Matrix objects to multiply\n * @returns {SVGMatrix} The matrix object resulting from the calculation\n*/\nexport const matrixMultiply = function (...args) {\n  const m = args.reduceRight((prev, m1) => {\n    return m1.multiply(prev);\n  });\n\n  if (Math.abs(m.a) < NEAR_ZERO) { m.a = 0; }\n  if (Math.abs(m.b) < NEAR_ZERO) { m.b = 0; }\n  if (Math.abs(m.c) < NEAR_ZERO) { m.c = 0; }\n  if (Math.abs(m.d) < NEAR_ZERO) { m.d = 0; }\n  if (Math.abs(m.e) < NEAR_ZERO) { m.e = 0; }\n  if (Math.abs(m.f) < NEAR_ZERO) { m.f = 0; }\n\n  return m;\n};\n\n/**\n * See if the given transformlist includes a non-indentity matrix transform.\n * @function module:math.hasMatrixTransform\n * @param {SVGTransformList} [tlist] - The transformlist to check\n * @returns {boolean} Whether or not a matrix transform was found\n*/\nexport const hasMatrixTransform = function (tlist) {\n  if (!tlist) { return false; }\n  let num = tlist.numberOfItems;\n  while (num--) {\n    const xform = tlist.getItem(num);\n    if (xform.type === 1 && !isIdentity(xform.matrix)) { return true; }\n  }\n  return false;\n};\n\n/**\n* @typedef {PlainObject} module:math.TransformedBox An object with the following values\n* @property {module:math.XYObject} tl - The top left coordinate\n* @property {module:math.XYObject} tr - The top right coordinate\n* @property {module:math.XYObject} bl - The bottom left coordinate\n* @property {module:math.XYObject} br - The bottom right coordinate\n* @property {PlainObject} aabox - Object with the following values:\n* @property {Float} aabox.x - Float with the axis-aligned x coordinate\n* @property {Float} aabox.y - Float with the axis-aligned y coordinate\n* @property {Float} aabox.width - Float with the axis-aligned width coordinate\n* @property {Float} aabox.height - Float with the axis-aligned height coordinate\n*/\n\n/**\n * Transforms a rectangle based on the given matrix.\n * @function module:math.transformBox\n * @param {Float} l - Float with the box's left coordinate\n * @param {Float} t - Float with the box's top coordinate\n * @param {Float} w - Float with the box width\n * @param {Float} h - Float with the box height\n * @param {SVGMatrix} m - Matrix object to transform the box by\n * @returns {module:math.TransformedBox}\n*/\nexport const transformBox = function (l, t, w, h, m) {\n  const tl = transformPoint(l, t, m),\n    tr = transformPoint((l + w), t, m),\n    bl = transformPoint(l, (t + h), m),\n    br = transformPoint((l + w), (t + h), m),\n\n    minx = Math.min(tl.x, tr.x, bl.x, br.x),\n    maxx = Math.max(tl.x, tr.x, bl.x, br.x),\n    miny = Math.min(tl.y, tr.y, bl.y, br.y),\n    maxy = Math.max(tl.y, tr.y, bl.y, br.y);\n\n  return {\n    tl,\n    tr,\n    bl,\n    br,\n    aabox: {\n      x: minx,\n      y: miny,\n      width: (maxx - minx),\n      height: (maxy - miny)\n    }\n  };\n};\n\n/**\n * This returns a single matrix Transform for a given Transform List\n * (this is the equivalent of `SVGTransformList.consolidate()` but unlike\n * that method, this one does not modify the actual `SVGTransformList`).\n * This function is very liberal with its `min`, `max` arguments.\n * @function module:math.transformListToTransform\n * @param {SVGTransformList} tlist - The transformlist object\n * @param {Integer} [min=0] - Optional integer indicating start transform position\n * @param {Integer} [max] - Optional integer indicating end transform position;\n *   defaults to one less than the tlist's `numberOfItems`\n * @returns {SVGTransform} A single matrix transform object\n*/\nexport const transformListToTransform = function (tlist, min, max) {\n  if (tlist == null) {\n    // Or should tlist = null have been prevented before this?\n    return svg.createSVGTransformFromMatrix(svg.createSVGMatrix());\n  }\n  min = min || 0;\n  max = max || (tlist.numberOfItems - 1);\n  min = parseInt(min, 10);\n  max = parseInt(max, 10);\n  if (min > max) { const temp = max; max = min; min = temp; }\n  let m = svg.createSVGMatrix();\n  for (let i = min; i <= max; ++i) {\n    // if our indices are out of range, just use a harmless identity matrix\n    const mtom = (i >= 0 && i < tlist.numberOfItems\n      ? tlist.getItem(i).matrix\n      : svg.createSVGMatrix());\n    m = matrixMultiply(m, mtom);\n  }\n  return svg.createSVGTransformFromMatrix(m);\n};\n\n/**\n * Get the matrix object for a given element.\n * @function module:math.getMatrix\n * @param {Element} elem - The DOM element to check\n * @returns {SVGMatrix} The matrix object associated with the element's transformlist\n*/\nexport const getMatrix = function (elem) {\n  const tlist = getTransformList(elem);\n  return transformListToTransform(tlist).matrix;\n};\n\n/**\n * Returns a 45 degree angle coordinate associated with the two given\n * coordinates.\n * @function module:math.snapToAngle\n * @param {Integer} x1 - First coordinate's x value\n * @param {Integer} y1 - First coordinate's y value\n * @param {Integer} x2 - Second coordinate's x value\n * @param {Integer} y2 - Second coordinate's y value\n * @returns {module:math.AngleCoord45}\n*/\nexport const snapToAngle = function (x1, y1, x2, y2) {\n  const snap = Math.PI / 4; // 45 degrees\n  const dx = x2 - x1;\n  const dy = y2 - y1;\n  const angle = Math.atan2(dy, dx);\n  const dist = Math.sqrt(dx * dx + dy * dy);\n  const snapangle = Math.round(angle / snap) * snap;\n\n  return {\n    x: x1 + dist * Math.cos(snapangle),\n    y: y1 + dist * Math.sin(snapangle),\n    a: snapangle\n  };\n};\n\n/**\n * Check if two rectangles (BBoxes objects) intersect each other.\n * @function module:math.rectsIntersect\n * @param {SVGRect} r1 - The first BBox-like object\n * @param {SVGRect} r2 - The second BBox-like object\n * @returns {boolean} True if rectangles intersect\n */\nexport const rectsIntersect = function (r1, r2) {\n  return r2.x < (r1.x + r1.width) &&\n    (r2.x + r2.width) > r1.x &&\n    r2.y < (r1.y + r1.height) &&\n    (r2.y + r2.height) > r1.y;\n};\n","/* globals jQuery */\n/**\n * Miscellaneous utilities\n * @module utilities\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {setUnitAttr, getTypeMap} from './units.js';\nimport {convertPath} from './path.js';\nimport {\n  hasMatrixTransform, transformListToTransform, transformBox\n} from './math.js';\nimport {\n  isWebkit, supportsHVLineContainerBBox, supportsPathBBox, supportsXpath,\n  supportsSelectors\n} from './browser.js';\n\n// Constants\nconst $ = jqPluginSVG(jQuery);\n\n// String used to encode base64.\nconst KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n\n// Much faster than running getBBox() every time\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst visElemsArr = visElems.split(',');\n// const hidElems = 'clipPath,defs,desc,feGaussianBlur,filter,linearGradient,marker,mask,metadata,pattern,radialGradient,stop,switch,symbol,title,textPath';\n\nlet editorContext_ = null;\nlet domdoc_ = null;\nlet domcontainer_ = null;\nlet svgroot_ = null;\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:utilities.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:utilities.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:utilities.EditorContext\n * @property {module:path.pathActions} pathActions\n */\n/**\n * @function module:utilities.EditorContext#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * Create a new SVG element based on the given object keys/values and add it\n * to the current layer.\n * The element will be run through `cleanupElement` before being returned\n * @function module:utilities.EditorContext#addSVGElementFromJson\n * @param {module:utilities.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:utilities.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:utilities.EditorContext#getDOMDocument\n * @returns {HTMLDocument}\n*/\n/**\n * @function module:utilities.EditorContext#getDOMContainer\n * @returns {HTMLElement}\n*/\n/**\n * @function module:utilities.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n/**\n * @function module:utilities.EditorContext#getBaseUnit\n * @returns {string}\n*/\n/**\n * @function module:utilities.EditorContext#getSnappingStep\n * @returns {Float|string}\n*/\n\n/**\n* @function module:utilities.init\n* @param {module:utilities.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n  domdoc_ = editorContext.getDOMDocument();\n  domcontainer_ = editorContext.getDOMContainer();\n  svgroot_ = editorContext.getSVGRoot();\n};\n\n/**\n * Used to prevent the [Billion laughs attack]{@link https://en.wikipedia.org/wiki/Billion_laughs_attack}.\n * @function module:utilities.dropXMLInteralSubset\n * @param {string} str String to be processed\n * @returns {string} The string with entity declarations in the internal subset removed\n * @todo This might be needed in other places `parseFromString` is used even without LGTM flagging\n */\nexport const dropXMLInteralSubset = (str) => {\n  return str.replace(/(<!DOCTYPE\\s+\\w*\\s*\\[).*(\\?\\]>)/, '$1$2');\n};\n\n/**\n* Converts characters in a string to XML-friendly entities.\n* @function module:utilities.toXml\n* @example `&` becomes `&amp;`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport const toXml = function (str) {\n  // &apos; is ok in XML, but not HTML\n  // &gt; does not normally need escaping, though it can if within a CDATA expression (and preceded by \"]]\")\n  return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\"/g, '&quot;').replace(/'/g, '&#x27;'); // Note: `&apos;` is XML only\n};\n\n/**\n* Converts XML entities in a string to single characters.\n* @function module:utilities.fromXml\n* @example `&amp;` becomes `&`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport const fromXml = function (str) {\n  return $('<p/>').html(str).text();\n};\n\n// This code was written by Tyler Akins and has been placed in the\n// public domain.  It would be nice if you left this header intact.\n// Base64 code from Tyler Akins -- http://rumkin.com\n\n// schiller: Removed string concatenation in favour of Array.join() optimization,\n//        also precalculate the size of the array needed.\n\n/**\n* Converts a string to base64.\n* @function module:utilities.encode64\n* @param {string} input\n* @returns {string} Base64 output\n*/\nexport const encode64 = function (input) {\n  // base64 strings are 4/3 larger than the original string\n  input = encodeUTF8(input); // convert non-ASCII characters\n  // input = convertToXMLReferences(input);\n  if (window.btoa) {\n    return window.btoa(input); // Use native if available\n  }\n  const output = [];\n  output.length = Math.floor((input.length + 2) / 3) * 4;\n\n  let i = 0, p = 0;\n  do {\n    const chr1 = input.charCodeAt(i++);\n    const chr2 = input.charCodeAt(i++);\n    const chr3 = input.charCodeAt(i++);\n\n    const enc1 = chr1 >> 2;\n    const enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n\n    let enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n    let enc4 = chr3 & 63;\n\n    if (isNaN(chr2)) {\n      enc3 = enc4 = 64;\n    } else if (isNaN(chr3)) {\n      enc4 = 64;\n    }\n\n    output[p++] = KEYSTR.charAt(enc1);\n    output[p++] = KEYSTR.charAt(enc2);\n    output[p++] = KEYSTR.charAt(enc3);\n    output[p++] = KEYSTR.charAt(enc4);\n  } while (i < input.length);\n\n  return output.join('');\n};\n\n/**\n* Converts a string from base64.\n* @function module:utilities.decode64\n* @param {string} input Base64-encoded input\n* @returns {string} Decoded output\n*/\nexport const decode64 = function (input) {\n  if (window.atob) {\n    return decodeUTF8(window.atob(input));\n  }\n\n  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =\n  input = input.replace(/[^A-Za-z0-9+/=]/g, '');\n\n  let output = '';\n  let i = 0;\n\n  do {\n    const enc1 = KEYSTR.indexOf(input.charAt(i++));\n    const enc2 = KEYSTR.indexOf(input.charAt(i++));\n    const enc3 = KEYSTR.indexOf(input.charAt(i++));\n    const enc4 = KEYSTR.indexOf(input.charAt(i++));\n\n    const chr1 = (enc1 << 2) | (enc2 >> 4);\n    const chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n    const chr3 = ((enc3 & 3) << 6) | enc4;\n\n    output += String.fromCharCode(chr1);\n\n    if (enc3 !== 64) {\n      output = output + String.fromCharCode(chr2);\n    }\n    if (enc4 !== 64) {\n      output = output + String.fromCharCode(chr3);\n    }\n  } while (i < input.length);\n  return decodeUTF8(output);\n};\n\n/**\n* @function module:utilities.decodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport const decodeUTF8 = function (argString) {\n  return decodeURIComponent(escape(argString));\n};\n\n// codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded\n/**\n* @function module:utilities.encodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport const encodeUTF8 = function (argString) {\n  return unescape(encodeURIComponent(argString));\n};\n\n/**\n * Convert dataURL to object URL.\n * @function module:utilities.dataURLToObjectURL\n * @param {string} dataurl\n * @returns {string} object URL or empty string\n */\nexport const dataURLToObjectURL = function (dataurl) {\n  if (typeof Uint8Array === 'undefined' || typeof Blob === 'undefined' || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  const arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],\n    bstr = atob(arr[1]);\n  let n = bstr.length;\n  const u8arr = new Uint8Array(n);\n  while (n--) {\n    u8arr[n] = bstr.charCodeAt(n);\n  }\n  const blob = new Blob([u8arr], {type: mime});\n  return URL.createObjectURL(blob);\n};\n\n/**\n * Get object URL for a blob object.\n * @function module:utilities.createObjectURL\n * @param {Blob} blob A Blob object or File object\n * @returns {string} object URL or empty string\n */\nexport const createObjectURL = function (blob) {\n  if (!blob || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  return URL.createObjectURL(blob);\n};\n\n/**\n * @property {string} blankPageObjectURL\n */\nexport const blankPageObjectURL = (function () {\n  if (typeof Blob === 'undefined') {\n    return '';\n  }\n  const blob = new Blob(['<html><head><title>SVG-edit</title></head><body>&nbsp;</body></html>'], {type: 'text/html'});\n  return createObjectURL(blob);\n})();\n\n/**\n* Converts a string to use XML references (for non-ASCII).\n* @function module:utilities.convertToXMLReferences\n* @param {string} input\n* @returns {string} Decimal numeric character references\n*/\nexport const convertToXMLReferences = function (input) {\n  let output = '';\n  [...input].forEach((ch) => {\n    const c = ch.charCodeAt();\n    if (c <= 127) {\n      output += ch;\n    } else {\n      output += `&#${c};`;\n    }\n  });\n  return output;\n};\n\n/**\n* Cross-browser compatible method of converting a string to an XML tree.\n* Found this function [here]{@link http://groups.google.com/group/jquery-dev/browse_thread/thread/c6d11387c580a77f}.\n* @function module:utilities.text2xml\n* @param {string} sXML\n* @throws {Error}\n* @returns {XMLDocument}\n*/\nexport const text2xml = function (sXML) {\n  if (sXML.includes('<svg:svg')) {\n    sXML = sXML.replace(/<(\\/?)svg:/g, '<$1').replace('xmlns:svg', 'xmlns');\n  }\n\n  let out, dXML;\n  try {\n    dXML = (window.DOMParser) ? new DOMParser() : new window.ActiveXObject('Microsoft.XMLDOM');\n    dXML.async = false;\n  } catch (e) {\n    throw new Error('XML Parser could not be instantiated');\n  }\n  try {\n    if (dXML.loadXML) {\n      out = (dXML.loadXML(sXML)) ? dXML : false;\n    } else {\n      out = dXML.parseFromString(sXML, 'text/xml');\n    }\n  } catch (e2) { throw new Error('Error parsing XML string'); }\n  return out;\n};\n\n/**\n* @typedef {PlainObject} module:utilities.BBoxObject (like `DOMRect`)\n* @property {Float} x\n* @property {Float} y\n* @property {Float} width\n* @property {Float} height\n*/\n\n/**\n* Converts a `SVGRect` into an object.\n* @function module:utilities.bboxToObj\n* @param {SVGRect} bbox - a SVGRect\n* @returns {module:utilities.BBoxObject} An object with properties names x, y, width, height.\n*/\nexport const bboxToObj = function ({x, y, width, height}) {\n  return {x, y, width, height};\n};\n\n/**\n* @callback module:utilities.TreeWalker\n* @param {Element} elem - DOM element being traversed\n* @returns {undefined}\n*/\n\n/**\n* Walks the tree and executes the callback on each element in a top-down fashion.\n* @function module:utilities.walkTree\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTree = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    cbFn(elem);\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n  }\n};\n\n/**\n* Walks the tree and executes the callback on each element in a depth-first fashion.\n* @function module:utilities.walkTreePost\n* @todo FIXME: Shouldn't this be calling walkTreePost?\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTreePost = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n    cbFn(elem);\n  }\n};\n\n/**\n* Extracts the URL from the `url(...)` syntax of some attributes.\n* Three variants:\n*  - `<circle fill=\"url(someFile.svg#foo)\" />`\n*  - `<circle fill=\"url('someFile.svg#foo')\" />`\n*  - `<circle fill='url(\"someFile.svg#foo\")' />`\n* @function module:utilities.getUrlFromAttr\n* @param {string} attrVal The attribute value as a string\n* @returns {string} String with just the URL, like \"someFile.svg#foo\"\n*/\nexport const getUrlFromAttr = function (attrVal) {\n  if (attrVal) {\n    // url('#somegrad')\n    if (attrVal.startsWith('url(\"')) {\n      return attrVal.substring(5, attrVal.indexOf('\"', 6));\n    }\n    // url('#somegrad')\n    if (attrVal.startsWith(\"url('\")) {\n      return attrVal.substring(5, attrVal.indexOf(\"'\", 6));\n    }\n    if (attrVal.startsWith('url(')) {\n      return attrVal.substring(4, attrVal.indexOf(')'));\n    }\n  }\n  return null;\n};\n\n/**\n* @function module:utilities.getHref\n* @param {Element} elem\n* @returns {string} The given element's `xlink:href` value\n*/\nexport let getHref = function (elem) {\n  return elem.getAttributeNS(NS.XLINK, 'href');\n};\n\n/**\n* Sets the given element's `xlink:href` value.\n* @function module:utilities.setHref\n* @param {Element} elem\n* @param {string} val\n* @returns {undefined}\n*/\nexport let setHref = function (elem, val) {\n  elem.setAttributeNS(NS.XLINK, 'xlink:href', val);\n};\n\n/**\n* @function module:utilities.findDefs\n* @returns {SVGDefsElement} The document's `<defs>` element, creating it first if necessary\n*/\nexport const findDefs = function () {\n  const svgElement = editorContext_.getSVGContent();\n  let defs = svgElement.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (defs.length > 0) {\n    defs = defs[0];\n  } else {\n    defs = svgElement.ownerDocument.createElementNS(NS.SVG, 'defs');\n    if (svgElement.firstChild) {\n      // first child is a comment, so call nextSibling\n      svgElement.insertBefore(defs, svgElement.firstChild.nextSibling);\n      // svgElement.firstChild.nextSibling.before(defs); // Not safe\n    } else {\n      svgElement.append(defs);\n    }\n  }\n  return defs;\n};\n\n// TODO(codedread): Consider moving the next to functions to bbox.js\n\n/**\n* Get correct BBox for a path in Webkit.\n* Converted from code found [here]{@link http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html}.\n* @function module:utilities.getPathBBox\n* @param {SVGPathElement} path - The path DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} A BBox-like object\n*/\nexport const getPathBBox = function (path) {\n  const seglist = path.pathSegList;\n  const tot = seglist.numberOfItems;\n\n  const bounds = [[], []];\n  const start = seglist.getItem(0);\n  let P0 = [start.x, start.y];\n\n  for (let i = 0; i < tot; i++) {\n    const seg = seglist.getItem(i);\n\n    if (seg.x === undefined) { continue; }\n\n    // Add actual points to limits\n    bounds[0].push(P0[0]);\n    bounds[1].push(P0[1]);\n\n    if (seg.x1) {\n      const P1 = [seg.x1, seg.y1],\n        P2 = [seg.x2, seg.y2],\n        P3 = [seg.x, seg.y];\n\n      for (let j = 0; j < 2; j++) {\n        const calc = function (t) {\n          return Math.pow(1 - t, 3) * P0[j] +\n            3 * Math.pow(1 - t, 2) * t * P1[j] +\n            3 * (1 - t) * Math.pow(t, 2) * P2[j] +\n            Math.pow(t, 3) * P3[j];\n        };\n\n        const b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];\n        const a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];\n        const c = 3 * P1[j] - 3 * P0[j];\n\n        if (a === 0) {\n          if (b === 0) {\n            continue;\n          }\n          const t = -c / b;\n          if (t > 0 && t < 1) {\n            bounds[j].push(calc(t));\n          }\n          continue;\n        }\n        const b2ac = Math.pow(b, 2) - 4 * c * a;\n        if (b2ac < 0) { continue; }\n        const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);\n        if (t1 > 0 && t1 < 1) { bounds[j].push(calc(t1)); }\n        const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);\n        if (t2 > 0 && t2 < 1) { bounds[j].push(calc(t2)); }\n      }\n      P0 = P3;\n    } else {\n      bounds[0].push(seg.x);\n      bounds[1].push(seg.y);\n    }\n  }\n\n  const x = Math.min.apply(null, bounds[0]);\n  const w = Math.max.apply(null, bounds[0]) - x;\n  const y = Math.min.apply(null, bounds[1]);\n  const h = Math.max.apply(null, bounds[1]) - y;\n  return {\n    x,\n    y,\n    width: w,\n    height: h\n  };\n};\n\n/**\n* Get the given/selected element's bounding box object, checking for\n* horizontal/vertical lines (see issue 717)\n* Note that performance is currently terrible, so some way to improve would\n* be great.\n* @param {Element} selected - Container or `<use>` DOM element\n* @returns {DOMRect} Bounding box object\n*/\nfunction groupBBFix (selected) {\n  if (supportsHVLineContainerBBox()) {\n    try { return selected.getBBox(); } catch (e) {}\n  }\n  const ref = $.data(selected, 'ref');\n  let matched = null;\n  let ret, copy;\n\n  if (ref) {\n    copy = $(ref).children().clone().attr('visibility', 'hidden');\n    $(svgroot_).append(copy);\n    matched = copy.filter('line, path');\n  } else {\n    matched = $(selected).find('line, path');\n  }\n\n  let issue = false;\n  if (matched.length) {\n    matched.each(function () {\n      const bb = this.getBBox();\n      if (!bb.width || !bb.height) {\n        issue = true;\n      }\n    });\n    if (issue) {\n      const elems = ref ? copy : $(selected).children();\n      ret = getStrokedBBox(elems);\n    } else {\n      ret = selected.getBBox();\n    }\n  } else {\n    ret = selected.getBBox();\n  }\n  if (ref) {\n    copy.remove();\n  }\n  return ret;\n}\n\n/**\n* Get the given/selected element's bounding box object, convert it to be more\n* usable when necessary.\n* @function module:utilities.getBBox\n* @param {Element} elem - Optional DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} Bounding box object\n*/\nexport const getBBox = function (elem) {\n  const selected = elem || editorContext_.geSelectedElements()[0];\n  if (elem.nodeType !== 1) { return null; }\n  const elname = selected.nodeName;\n\n  let ret = null;\n  switch (elname) {\n  case 'text':\n    if (selected.textContent === '') {\n      selected.textContent = 'a'; // Some character needed for the selector to use.\n      ret = selected.getBBox();\n      selected.textContent = '';\n    } else {\n      if (selected.getBBox) { ret = selected.getBBox(); }\n    }\n    break;\n  case 'path':\n    if (!supportsPathBBox()) {\n      ret = getPathBBox(selected);\n    } else {\n      if (selected.getBBox) { ret = selected.getBBox(); }\n    }\n    break;\n  case 'g':\n  case 'a':\n    ret = groupBBFix(selected);\n    break;\n  default:\n\n    if (elname === 'use') {\n      ret = groupBBFix(selected); // , true);\n    }\n    if (elname === 'use' || (elname === 'foreignObject' && isWebkit())) {\n      if (!ret) { ret = selected.getBBox(); }\n      // This is resolved in later versions of webkit, perhaps we should\n      // have a featured detection for correct 'use' behavior?\n      // ——————————\n      if (!isWebkit()) {\n        const bb = {};\n        bb.width = ret.width;\n        bb.height = ret.height;\n        bb.x = ret.x + parseFloat(selected.getAttribute('x') || 0);\n        bb.y = ret.y + parseFloat(selected.getAttribute('y') || 0);\n        ret = bb;\n      }\n    } else if (visElemsArr.includes(elname)) {\n      if (selected) {\n        try {\n          ret = selected.getBBox();\n        } catch (err) {\n          // tspan (and textPath apparently) have no `getBBox` in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=937268\n          // Re: Chrome returning bbox for containing text element, see: https://bugs.chromium.org/p/chromium/issues/detail?id=349835\n          const extent = selected.getExtentOfChar(0); // pos+dimensions of the first glyph\n          const width = selected.getComputedTextLength(); // width of the tspan\n          ret = {\n            x: extent.x,\n            y: extent.y,\n            width,\n            height: extent.height\n          };\n        }\n      } else {\n        // Check if element is child of a foreignObject\n        const fo = $(selected).closest('foreignObject');\n        if (fo.length) {\n          if (fo[0].getBBox) {\n            ret = fo[0].getBBox();\n          }\n        }\n      }\n    }\n  }\n  if (ret) {\n    ret = bboxToObj(ret);\n  }\n\n  // get the bounding box from the DOM (which is in that element's coordinate system)\n  return ret;\n};\n\n/**\n* @typedef {GenericArray} module:utilities.PathSegmentArray\n* @property {Integer} length 2\n* @property {\"M\"|\"L\"|\"C\"|\"Z\"} 0\n* @property {Float[]} 1\n*/\n\n/**\n* Create a path 'd' attribute from path segments.\n* Each segment is an array of the form: `[singleChar, [x,y, x,y, ...]]`\n* @function module:utilities.getPathDFromSegments\n* @param {module:utilities.PathSegmentArray[]} pathSegments - An array of path segments to be converted\n* @returns {string} The converted path d attribute.\n*/\nexport const getPathDFromSegments = function (pathSegments) {\n  let d = '';\n\n  $.each(pathSegments, function (j, [singleChar, pts]) {\n    d += singleChar;\n    for (let i = 0; i < pts.length; i += 2) {\n      d += (pts[i] + ',' + pts[i + 1]) + ' ';\n    }\n  });\n\n  return d;\n};\n\n/**\n* Make a path 'd' attribute from a simple SVG element shape.\n* @function module:utilities.getPathDFromElement\n* @param {Element} elem - The element to be converted\n* @returns {string} The path d attribute or `undefined` if the element type is unknown.\n*/\nexport const getPathDFromElement = function (elem) {\n  // Possibly the cubed root of 6, but 1.81 works best\n  let num = 1.81;\n  let d, a, rx, ry;\n  switch (elem.tagName) {\n  case 'ellipse':\n  case 'circle':\n    a = $(elem).attr(['rx', 'ry', 'cx', 'cy']);\n    const {cx, cy} = a;\n    ({rx, ry} = a);\n    if (elem.tagName === 'circle') {\n      rx = ry = $(elem).attr('r');\n    }\n\n    d = getPathDFromSegments([\n      ['M', [(cx - rx), (cy)]],\n      ['C', [(cx - rx), (cy - ry / num), (cx - rx / num), (cy - ry), (cx), (cy - ry)]],\n      ['C', [(cx + rx / num), (cy - ry), (cx + rx), (cy - ry / num), (cx + rx), (cy)]],\n      ['C', [(cx + rx), (cy + ry / num), (cx + rx / num), (cy + ry), (cx), (cy + ry)]],\n      ['C', [(cx - rx / num), (cy + ry), (cx - rx), (cy + ry / num), (cx - rx), (cy)]],\n      ['Z', []]\n    ]);\n    break;\n  case 'path':\n    d = elem.getAttribute('d');\n    break;\n  case 'line':\n    a = $(elem).attr(['x1', 'y1', 'x2', 'y2']);\n    d = 'M' + a.x1 + ',' + a.y1 + 'L' + a.x2 + ',' + a.y2;\n    break;\n  case 'polyline':\n    d = 'M' + elem.getAttribute('points');\n    break;\n  case 'polygon':\n    d = 'M' + elem.getAttribute('points') + ' Z';\n    break;\n  case 'rect':\n    const r = $(elem).attr(['rx', 'ry']);\n    ({rx, ry} = r);\n    const b = elem.getBBox();\n    const {x, y} = b, w = b.width, h = b.height;\n    num = 4 - num; // Why? Because!\n\n    if (!rx && !ry) {\n      // Regular rect\n      d = getPathDFromSegments([\n        ['M', [x, y]],\n        ['L', [x + w, y]],\n        ['L', [x + w, y + h]],\n        ['L', [x, y + h]],\n        ['L', [x, y]],\n        ['Z', []]\n      ]);\n    } else {\n      d = getPathDFromSegments([\n        ['M', [x, y + ry]],\n        ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]],\n        ['L', [x + w - rx, y]],\n        ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]],\n        ['L', [x + w, y + h - ry]],\n        ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]],\n        ['L', [x + rx, y + h]],\n        ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]],\n        ['L', [x, y + ry]],\n        ['Z', []]\n      ]);\n    }\n    break;\n  default:\n    break;\n  }\n\n  return d;\n};\n\n/**\n* Get a set of attributes from an element that is useful for convertToPath.\n* @function module:utilities.getExtraAttributesForConvertToPath\n* @param {Element} elem - The element to be probed\n* @returns {PlainObject.<\"marker-start\"|\"marker-end\"|\"marker-mid\"|\"filter\"|\"clip-path\", string>} An object with attributes.\n*/\nexport const getExtraAttributesForConvertToPath = function (elem) {\n  const attrs = {};\n  // TODO: make this list global so that we can properly maintain it\n  // TODO: what about @transform, @clip-rule, @fill-rule, etc?\n  $.each(['marker-start', 'marker-end', 'marker-mid', 'filter', 'clip-path'], function () {\n    const a = elem.getAttribute(this);\n    if (a) {\n      attrs[this] = a;\n    }\n  });\n  return attrs;\n};\n\n/**\n* Get the BBox of an element-as-path.\n* @function module:utilities.getBBoxOfElementAsPath\n* @param {Element} elem - The DOM element to be probed\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, `pathActions.resetOrientation()` is used. See: canvas.pathActions.\n* @returns {DOMRect|false} The resulting path's bounding box object.\n*/\nexport const getBBoxOfElementAsPath = function (elem, addSVGElementFromJson, pathActions) {\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: getExtraAttributesForConvertToPath(elem)\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const parent = elem.parentNode;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parent.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n  } else {\n    path.remove();\n  }\n\n  // Get the correct BBox of the new path, then discard it\n  pathActions.resetOrientation(path);\n  let bb = false;\n  try {\n    bb = path.getBBox();\n  } catch (e) {\n    // Firefox fails\n  }\n  path.remove();\n  return bb;\n};\n\n/**\n* Convert selected element to a path.\n* @function module:utilities.convertToPath\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.SVGElementJSON} attrs - Apply attributes to new path. see canvas.convertToPath\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}\n* @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}\n* @param {module:history} history - see history module\n* @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}\n* @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.\n*/\nexport const convertToPath = function (elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, history, addCommandToHistory) {\n  const batchCmd = new history.BatchCommand('Convert element to Path');\n\n  // Any attribute on the element not covered by the passed-in attributes\n  attrs = $.extend({}, attrs, getExtraAttributesForConvertToPath(elem));\n\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: attrs\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const {id} = elem;\n  const parent = elem.parentNode;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parent.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n\n    // Replace the current element with the converted one\n\n    // Reorient if it has a matrix\n    if (eltrans) {\n      const tlist = getTransformList(path);\n      if (hasMatrixTransform(tlist)) {\n        pathActions.resetOrientation(path);\n      }\n    }\n\n    const {nextSibling} = elem;\n    batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));\n    batchCmd.addSubCommand(new history.InsertElementCommand(path));\n\n    clearSelection();\n    elem.remove();\n    path.setAttribute('id', id);\n    path.removeAttribute('visibility');\n    addToSelection([path], true);\n\n    addCommandToHistory(batchCmd);\n\n    return path;\n  }\n  // the elem.tagName was not recognized, so no \"d\" attribute. Remove it, so we've haven't changed anything.\n  path.remove();\n  return null;\n};\n\n/**\n* Can the bbox be optimized over the native getBBox? The optimized bbox is the same as the native getBBox when\n* the rotation angle is a multiple of 90 degrees and there are no complex transforms.\n* Getting an optimized bbox can be dramatically slower, so we want to make sure it's worth it.\n*\n* The best example for this is a circle rotate 45 degrees. The circle doesn't get wider or taller when rotated\n* about it's center.\n*\n* The standard, unoptimized technique gets the native bbox of the circle, rotates the box 45 degrees, uses\n* that width and height, and applies any transforms to get the final bbox. This means the calculated bbox\n* is much wider than the original circle. If the angle had been 0, 90, 180, etc. both techniques render the\n* same bbox.\n*\n* The optimization is not needed if the rotation is a multiple 90 degrees. The default technique is to call\n* getBBox then apply the angle and any transforms.\n*\n* @param {Float} angle - The rotation angle in degrees\n* @param {boolean} hasMatrixTransform - True if there is a matrix transform\n* @returns {boolean} True if the bbox can be optimized.\n*/\nfunction bBoxCanBeOptimizedOverNativeGetBBox (angle, hasMatrixTransform) {\n  const angleModulo90 = angle % 90;\n  const closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;\n  const closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;\n  return hasMatrixTransform || !(closeTo0 || closeTo90);\n}\n\n/**\n* Get bounding box that includes any transforms.\n* @function module:utilities.getBBoxWithTransform\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getBBoxWithTransform = function (elem, addSVGElementFromJson, pathActions) {\n  // TODO: Fix issue with rotated groups. Currently they work\n  // fine in FF, but not in other browsers (same problem mentioned\n  // in Issue 339 comment #2).\n\n  let bb = getBBox(elem);\n\n  if (!bb) {\n    return null;\n  }\n\n  const tlist = getTransformList(elem);\n  const angle = getRotationAngleFromTransformList(tlist);\n  const hasMatrixXForm = hasMatrixTransform(tlist);\n\n  if (angle || hasMatrixXForm) {\n    let goodBb = false;\n    if (bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixXForm)) {\n      // Get the BBox from the raw path for these elements\n      // TODO: why ellipse and not circle\n      const elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];\n      if (elemNames.includes(elem.tagName)) {\n        bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n      } else if (elem.tagName === 'rect') {\n        // Look for radius\n        const rx = elem.getAttribute('rx');\n        const ry = elem.getAttribute('ry');\n        if (rx || ry) {\n          bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n        }\n      }\n    }\n\n    if (!goodBb) {\n      const {matrix} = transformListToTransform(tlist);\n      bb = transformBox(bb.x, bb.y, bb.width, bb.height, matrix).aabox;\n\n      // Old technique that was exceedingly slow with large documents.\n      //\n      // Accurate way to get BBox of rotated element in Firefox:\n      // Put element in group and get its BBox\n      //\n      // Must use clone else FF freaks out\n      // const clone = elem.cloneNode(true);\n      // const g = document.createElementNS(NS.SVG, 'g');\n      // const parent = elem.parentNode;\n      // parent.append(g);\n      // g.append(clone);\n      // const bb2 = bboxToObj(g.getBBox());\n      // g.remove();\n    }\n  }\n  return bb;\n};\n\n// TODO: This is problematic with large stroke-width and, for example, a single horizontal line. The calculated BBox extends way beyond left and right sides.\nfunction getStrokeOffsetForBBox (elem) {\n  const sw = elem.getAttribute('stroke-width');\n  return (!isNaN(sw) && elem.getAttribute('stroke') !== 'none') ? sw / 2 : 0;\n}\n\n/**\n * @typedef {PlainObject} BBox\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n * @property {Float} width\n * @property {Float} height\n */\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBox\n* @param {Element[]} elems - Array with DOM elements to check\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getStrokedBBox = function (elems, addSVGElementFromJson, pathActions) {\n  if (!elems || !elems.length) { return false; }\n\n  let fullBb;\n  $.each(elems, function () {\n    if (fullBb) { return; }\n    if (!this.parentNode) { return; }\n    fullBb = getBBoxWithTransform(this, addSVGElementFromJson, pathActions);\n  });\n\n  // This shouldn't ever happen...\n  if (fullBb === undefined) { return null; }\n\n  // fullBb doesn't include the stoke, so this does no good!\n  // if (elems.length == 1) return fullBb;\n\n  let maxX = fullBb.x + fullBb.width;\n  let maxY = fullBb.y + fullBb.height;\n  let minX = fullBb.x;\n  let minY = fullBb.y;\n\n  // If only one elem, don't call the potentially slow getBBoxWithTransform method again.\n  if (elems.length === 1) {\n    const offset = getStrokeOffsetForBBox(elems[0]);\n    minX -= offset;\n    minY -= offset;\n    maxX += offset;\n    maxY += offset;\n  } else {\n    $.each(elems, function (i, elem) {\n      const curBb = getBBoxWithTransform(elem, addSVGElementFromJson, pathActions);\n      if (curBb) {\n        const offset = getStrokeOffsetForBBox(elem);\n        minX = Math.min(minX, curBb.x - offset);\n        minY = Math.min(minY, curBb.y - offset);\n        // TODO: The old code had this test for max, but not min. I suspect this test should be for both min and max\n        if (elem.nodeType === 1) {\n          maxX = Math.max(maxX, curBb.x + curBb.width + offset);\n          maxY = Math.max(maxY, curBb.y + curBb.height + offset);\n        }\n      }\n    });\n  }\n\n  fullBb.x = minX;\n  fullBb.y = minY;\n  fullBb.width = maxX - minX;\n  fullBb.height = maxY - minY;\n  return fullBb;\n};\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:utilities.getVisibleElements\n* @param {Element} parent - The parent DOM element to search within\n* @returns {Element[]} All \"visible\" elements.\n*/\nexport const getVisibleElements = function (parent) {\n  if (!parent) {\n    parent = $(editorContext_.getSVGContent()).children(); // Prevent layers from being included\n  }\n\n  const contentElems = [];\n  $(parent).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push(elem);\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBoxDefaultVisible\n* @param {Element[]} elems - Array with DOM elements to check\n* @returns {module:utilities.BBoxObject} A single bounding box object\n*/\nexport const getStrokedBBoxDefaultVisible = function (elems) {\n  if (!elems) { elems = getVisibleElements(); }\n  return getStrokedBBox(\n    elems,\n    editorContext_.addSVGElementFromJson,\n    editorContext_.pathActions\n  );\n};\n\n/**\n* Get the rotation angle of the given transform list.\n* @function module:utilities.getRotationAngleFromTransformList\n* @param {SVGTransformList} tlist - List of transforms\n* @param {boolean} toRad - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport const getRotationAngleFromTransformList = function (tlist, toRad) {\n  if (!tlist) { return 0; } // <svg> elements have no tlist\n  const N = tlist.numberOfItems;\n  for (let i = 0; i < N; ++i) {\n    const xform = tlist.getItem(i);\n    if (xform.type === 4) {\n      return toRad ? xform.angle * Math.PI / 180.0 : xform.angle;\n    }\n  }\n  return 0.0;\n};\n\n/**\n* Get the rotation angle of the given/selected DOM element.\n* @function module:utilities.getRotationAngle\n* @param {Element} [elem] - DOM element to get the angle for. Default to first of selected elements.\n* @param {boolean} [toRad=false] - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport let getRotationAngle = function (elem, toRad) {\n  const selected = elem || editorContext_.getSelectedElements()[0];\n  // find the rotation transform (if any) and set it\n  const tlist = getTransformList(selected);\n  return getRotationAngleFromTransformList(tlist, toRad);\n};\n\n/**\n* Get the reference element associated with the given attribute value.\n* @function module:utilities.getRefElem\n* @param {string} attrVal - The attribute value as a string\n* @returns {Element} Reference element\n*/\nexport const getRefElem = function (attrVal) {\n  return getElem(getUrlFromAttr(attrVal).substr(1));\n};\n\n/**\n* Get a DOM element by ID within the SVG root element.\n* @function module:utilities.getElem\n* @param {string} id - String with the element's new ID\n* @returns {Element}\n*/\nexport const getElem = (supportsSelectors())\n  ? function (id) {\n    // querySelector lookup\n    return svgroot_.querySelector('#' + id);\n  } : supportsXpath()\n    ? function (id) {\n      // xpath lookup\n      return domdoc_.evaluate(\n        'svg:svg[@id=\"svgroot\"]//svg:*[@id=\"' + id + '\"]',\n        domcontainer_,\n        function () { return NS.SVG; },\n        9,\n        null).singleNodeValue;\n    }\n    : function (id) {\n      // jQuery lookup: twice as slow as xpath in FF\n      return $(svgroot_).find('[id=' + id + ']')[0];\n    };\n\n/**\n* Assigns multiple attributes to an element.\n* @function module:utilities.assignAttributes\n* @param {Element} elem - DOM element to apply new attribute values to\n* @param {PlainObject.<string, string>} attrs - Object with attribute keys/values\n* @param {Integer} [suspendLength] - Milliseconds to suspend redraw\n* @param {boolean} [unitCheck=false] - Boolean to indicate the need to use units.setUnitAttr\n* @returns {undefined}\n*/\nexport const assignAttributes = function (elem, attrs, suspendLength, unitCheck) {\n  for (const [key, value] of Object.entries(attrs)) {\n    const ns = (key.substr(0, 4) === 'xml:'\n      ? NS.XML\n      : key.substr(0, 6) === 'xlink:' ? NS.XLINK : null);\n\n    if (ns) {\n      elem.setAttributeNS(ns, key, value);\n    } else if (!unitCheck) {\n      elem.setAttribute(key, value);\n    } else {\n      setUnitAttr(elem, key, value);\n    }\n  }\n};\n\n/**\n* Remove unneeded (default) attributes, making resulting SVG smaller.\n* @function module:utilities.cleanupElement\n* @param {Element} element - DOM element to clean up\n* @returns {undefined}\n*/\nexport const cleanupElement = function (element) {\n  const defaults = {\n    'fill-opacity': 1,\n    'stop-opacity': 1,\n    opacity: 1,\n    stroke: 'none',\n    'stroke-dasharray': 'none',\n    'stroke-linejoin': 'miter',\n    'stroke-linecap': 'butt',\n    'stroke-opacity': 1,\n    'stroke-width': 1,\n    rx: 0,\n    ry: 0\n  };\n\n  if (element.nodeName === 'ellipse') {\n    // Ellipse elements require rx and ry attributes\n    delete defaults.rx;\n    delete defaults.ry;\n  }\n\n  for (const attr in defaults) {\n    const val = defaults[attr];\n    if (element.getAttribute(attr) === String(val)) {\n      element.removeAttribute(attr);\n    }\n  }\n};\n\n/**\n* Round value to for snapping.\n* @function module:utilities.snapToGrid\n* @param {Float} value\n* @returns {Integer}\n*/\nexport const snapToGrid = function (value) {\n  const unit = editorContext_.getBaseUnit();\n  let stepSize = editorContext_.getSnappingStep();\n  if (unit !== 'px') {\n    stepSize *= getTypeMap()[unit];\n  }\n  value = Math.round(value / stepSize) * stepSize;\n  return value;\n};\n\n/**\n* Escapes special characters in a regular expression.\n* @function module:utilities.regexEscape\n* @param {string} str\n* @returns {string}\n*/\nexport const regexEscape = function (str) {\n  // From: http://phpjs.org/functions\n  return String(str).replace(new RegExp('[.\\\\\\\\+*?\\\\[\\\\^\\\\]$(){}=!<>|:\\\\-]', 'g'), '\\\\$&');\n};\n\n/**\n * Prevents default browser click behaviour on the given element.\n * @function module:utilities.preventClickDefault\n * @param {Element} img - The DOM element to prevent the click on\n * @returns {undefined}\n */\nexport const preventClickDefault = function (img) {\n  $(img).click(function (e) { e.preventDefault(); });\n};\n\n/**\n * @callback module:utilities.GetNextID\n * @returns {string} The ID\n */\n/**\n * Create a clone of an element, updating its ID and its children's IDs when needed.\n * @function module:utilities.copyElem\n * @param {Element} el - DOM element to clone\n * @param {module:utilities.GetNextID} getNextId - The getter of the next unique ID.\n * @returns {Element} The cloned element\n */\nexport const copyElem = function (el, getNextId) {\n  // manually create a copy of the element\n  const newEl = document.createElementNS(el.namespaceURI, el.nodeName);\n  $.each(el.attributes, function (i, attr) {\n    if (attr.localName !== '-moz-math-font-style') {\n      newEl.setAttributeNS(attr.namespaceURI, attr.nodeName, attr.value);\n    }\n  });\n  // set the copied element's new id\n  newEl.removeAttribute('id');\n  newEl.id = getNextId();\n\n  // Opera's \"d\" value needs to be reset for Opera/Win/non-EN\n  // Also needed for webkit (else does not keep curved segments on clone)\n  if (isWebkit() && el.nodeName === 'path') {\n    const fixedD = convertPath(el);\n    newEl.setAttribute('d', fixedD);\n  }\n\n  // now create copies of all children\n  $.each(el.childNodes, function (i, child) {\n    switch (child.nodeType) {\n    case 1: // element node\n      newEl.append(copyElem(child, getNextId));\n      break;\n    case 3: // text node\n      newEl.textContent = child.nodeValue;\n      break;\n    default:\n      break;\n    }\n  });\n\n  if ($(el).data('gsvg')) {\n    $(newEl).data('gsvg', newEl.firstChild);\n  } else if ($(el).data('symbol')) {\n    const ref = $(el).data('symbol');\n    $(newEl).data('ref', ref).data('symbol', ref);\n  } else if (newEl.tagName === 'image') {\n    preventClickDefault(newEl);\n  }\n\n  return newEl;\n};\n\n/**\n* Overwrite methods for unit testing.\n* @function module:utilities.mock\n* @returns {undefined}\n*/\nexport const mock = ({\n  getHref: getHrefUser, setHref: setHrefUser, getRotationAngle: getRotationAngleUser\n}) => {\n  getHref = getHrefUser;\n  setHref = setHrefUser;\n  getRotationAngle = getRotationAngleUser;\n};\n","/* globals jQuery */\n/**\n * Adds context menu functionality\n * @module contextmenu\n * @license Apache-2.0\n * @author Adam Bender\n */\n// Dependencies:\n// 1) jQuery (for dom injection of context menus)\n\nconst $ = jQuery;\n\nlet contextMenuExtensions = {};\n\n/**\n * Signature depends on what the user adds; in the case of our uses with\n * SVGEditor, no parameters are passed nor anything expected for a return.\n * @callback module:contextmenu.MenuItemAction\n*/\n\n/**\n* @typedef {PlainObject} module:contextmenu.MenuItem\n* @property {string} id\n* @property {string} label\n* @property {module:contextmenu.MenuItemAction} action\n*/\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {boolean}\n*/\nconst menuItemIsValid = function (menuItem) {\n  return menuItem && menuItem.id && menuItem.label && menuItem.action && typeof menuItem.action === 'function';\n};\n\n/**\n* @function module:contextmenu.add\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {undefined}\n*/\nexport const add = function (menuItem) {\n  // menuItem: {id, label, shortcut, action}\n  if (!menuItemIsValid(menuItem)) {\n    console.error('Menu items must be defined and have at least properties: id, label, action, where action must be a function');\n    return;\n  }\n  if (menuItem.id in contextMenuExtensions) {\n    console.error('Cannot add extension \"' + menuItem.id + '\", an extension by that name already exists\"');\n    return;\n  }\n  // Register menuItem action, see below for deferred menu dom injection\n  console.log('Registed contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}');\n  contextMenuExtensions[menuItem.id] = menuItem;\n  // TODO: Need to consider how to handle custom enable/disable behavior\n};\n\n/**\n* @function module:contextmenu.hasCustomHandler\n* @param {string} handlerKey\n* @returns {boolean}\n*/\nexport const hasCustomHandler = function (handlerKey) {\n  return Boolean(contextMenuExtensions[handlerKey]);\n};\n\n/**\n* @function module:contextmenu.getCustomHandler\n* @param {string} handlerKey\n* @returns {module:contextmenu.MenuItemAction}\n*/\nexport const getCustomHandler = function (handlerKey) {\n  return contextMenuExtensions[handlerKey].action;\n};\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {undefined}\n*/\nconst injectExtendedContextMenuItemIntoDom = function (menuItem) {\n  if (!Object.keys(contextMenuExtensions).length) {\n    // all menuItems appear at the bottom of the menu in their own container.\n    // if this is the first extension menu we need to add the separator.\n    $('#cmenu_canvas').append(\"<li class='separator'>\");\n  }\n  const shortcut = menuItem.shortcut || '';\n  $('#cmenu_canvas').append(\"<li class='disabled'><a href='#\" + menuItem.id + \"'>\" +\n    menuItem.label + \"<span class='shortcut'>\" +\n    shortcut + '</span></a></li>');\n};\n\n/**\n* @function module:contextmenu.injectExtendedContextMenuItemsIntoDom\n* @returns {undefined}\n*/\nexport const injectExtendedContextMenuItemsIntoDom = function () {\n  for (const menuItem in contextMenuExtensions) {\n    injectExtendedContextMenuItemIntoDom(contextMenuExtensions[menuItem]);\n  }\n};\n/**\n* @function module:contextmenu.resetCustomMenus\n* @returns {undefined}\n*/\nexport const resetCustomMenus = function () { contextMenuExtensions = {}; };\n","// MIT License\n// From: https://github.com/uupaa/dynamic-import-polyfill/blob/master/importModule.js\n\n/**\n * @module importModule\n */\n\nfunction toAbsoluteURL (url) {\n  const a = document.createElement('a');\n  a.setAttribute('href', url); // <a href=\"hoge.html\">\n  return a.cloneNode(false).href; // -> \"http://example.com/hoge.html\"\n}\n\nfunction addScriptAtts (script, atts) {\n  ['id', 'class', 'type'].forEach((prop) => {\n    if (prop in atts) {\n      script[prop] = atts[prop];\n    }\n  });\n}\n\n// Additions by Brett\n/**\n* @typedef {PlainObject} module:importModule.ImportConfig\n* @property {string} global The variable name to set on `window` (when not using the modular version)\n* @property {boolean} [returnDefault=false]\n*/\n/**\n* @function module:importModule.importSetGlobalDefault\n* @param {string} url\n* @param {module:importModule.ImportConfig} config\n* @returns {*} The return depends on the export of the targeted module.\n*/\nexport async function importSetGlobalDefault (url, config) {\n  return importSetGlobal(url, {...config, returnDefault: true});\n}\n/**\n* @function module:importModule.importSetGlobal\n* @param {string} url\n* @param {module:importModule.ImportConfig} config\n* @returns {ArbitraryModule|*} The return depends on the export of the targeted module.\n*/\nexport async function importSetGlobal (url, {global, returnDefault}) {\n  // Todo: Replace calls to this function with `import()` when supported\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (modularVersion) {\n    return importModule(url, undefined, {returnDefault});\n  }\n  await importScript(url);\n  return window[global];\n}\n// Addition by Brett\nexport function importScript (url, atts = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importScript(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => {\n    const script = document.createElement('script');\n    const destructor = () => {\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      script.src = '';\n    };\n    script.defer = 'defer';\n    addScriptAtts(script, atts);\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve();\n      destructor();\n    };\n    script.src = url;\n\n    document.head.append(script);\n  });\n}\n\nexport function importModule (url, atts = {}, {returnDefault = false} = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importModule(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => {\n    const vector = '$importModule$' + Math.random().toString(32).slice(2);\n    const script = document.createElement('script');\n    const destructor = () => {\n      delete window[vector];\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      URL.revokeObjectURL(script.src);\n      script.src = '';\n    };\n    addScriptAtts(script, atts);\n    script.defer = 'defer';\n    script.type = 'module';\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve(window[vector]);\n      destructor();\n    };\n    const absURL = toAbsoluteURL(url);\n    const loader = `import * as m from '${absURL.replace(/'/g, \"\\\\'\")}'; window.${vector} = ${returnDefault ? 'm.default || ' : ''}m;`; // export Module\n    const blob = new Blob([loader], {type: 'text/javascript'});\n    script.src = URL.createObjectURL(blob);\n\n    document.head.append(script);\n  });\n}\n\nexport default importModule;\n","/* globals jQuery */\n/**\n * Provides tools for the layer concept\n * @module layer\n * @license MIT\n *\n * @copyright 2011 Jeff Schiller, 2016 Flint O'Brien\n */\n\nimport {NS} from './namespaces.js';\nimport {toXml, walkTree} from './utilities.js';\n\nconst $ = jQuery;\n\n/**\n * This class encapsulates the concept of a layer in the drawing. It can be constructed with\n * an existing group element or, with three parameters, will create a new layer group element.\n *\n * @example\n * new Layer('name', group);          // Use the existing group for this layer.\n * new Layer('name', group, svgElem); // Create a new group and add it to the DOM after group.\n * new Layer('name', null, svgElem);  // Create a new group and add it to the DOM as the last layer.\n * @memberof module:layer\n */\nclass Layer {\n  /**\n  * @param {string} name - Layer name\n  * @param {SVGGElement|null} group - An existing SVG group element or null.\n  *     If group and no svgElem, use group for this layer.\n  *     If group and svgElem, create a new group element and insert it in the DOM after group.\n  *     If no group and svgElem, create a new group element and insert it in the DOM as the last layer.\n  * @param {SVGGElement=} svgElem - The SVG DOM element. If defined, use this to add\n  *     a new layer to the document.\n  */\n  constructor (name, group, svgElem) {\n    this.name_ = name;\n    this.group_ = svgElem ? null : group;\n\n    if (svgElem) {\n      // Create a group element with title and add it to the DOM.\n      const svgdoc = svgElem.ownerDocument;\n      this.group_ = svgdoc.createElementNS(NS.SVG, 'g');\n      const layerTitle = svgdoc.createElementNS(NS.SVG, 'title');\n      layerTitle.textContent = name;\n      this.group_.append(layerTitle);\n      if (group) {\n        $(group).after(this.group_);\n      } else {\n        svgElem.append(this.group_);\n      }\n    }\n\n    addLayerClass(this.group_);\n    walkTree(this.group_, function (e) {\n      e.setAttribute('style', 'pointer-events:inherit');\n    });\n\n    this.group_.setAttribute('style', svgElem ? 'pointer-events:all' : 'pointer-events:none');\n  }\n\n  /**\n   * Get the layer's name.\n   * @returns {string} The layer name\n   */\n  getName () {\n    return this.name_;\n  }\n\n  /**\n   * Get the group element for this layer.\n   * @returns {SVGGElement} The layer SVG group\n   */\n  getGroup () {\n    return this.group_;\n  }\n\n  /**\n   * Active this layer so it takes pointer events.\n   * @returns {undefined}\n   */\n  activate () {\n    this.group_.setAttribute('style', 'pointer-events:all');\n  }\n\n  /**\n   * Deactive this layer so it does NOT take pointer events.\n   * @returns {undefined}\n   */\n  deactivate () {\n    this.group_.setAttribute('style', 'pointer-events:none');\n  }\n\n  /**\n   * Set this layer visible or hidden based on 'visible' parameter.\n   * @param {boolean} visible - If true, make visible; otherwise, hide it.\n   * @returns {undefined}\n   */\n  setVisible (visible) {\n    const expected = visible === undefined || visible ? 'inline' : 'none';\n    const oldDisplay = this.group_.getAttribute('display');\n    if (oldDisplay !== expected) {\n      this.group_.setAttribute('display', expected);\n    }\n  }\n\n  /**\n   * Is this layer visible?\n   * @returns {boolean} True if visible.\n   */\n  isVisible () {\n    return this.group_.getAttribute('display') !== 'none';\n  }\n\n  /**\n   * Get layer opacity.\n   * @returns {Float} Opacity value.\n   */\n  getOpacity () {\n    const opacity = this.group_.getAttribute('opacity');\n    if (opacity === null || opacity === undefined) {\n      return 1;\n    }\n    return parseFloat(opacity);\n  }\n\n  /**\n   * Sets the opacity of this layer. If opacity is not a value between 0.0 and 1.0,\n   * nothing happens.\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n   */\n  setOpacity (opacity) {\n    if (typeof opacity === 'number' && opacity >= 0.0 && opacity <= 1.0) {\n      this.group_.setAttribute('opacity', opacity);\n    }\n  }\n\n  /**\n   * Append children to this layer.\n   * @param {SVGGElement} children - The children to append to this layer.\n   * @returns {undefined}\n   */\n  appendChildren (children) {\n    for (let i = 0; i < children.length; ++i) {\n      this.group_.append(children[i]);\n    }\n  }\n\n  /**\n  * @returns {SVGTitleElement|null}\n  */\n  getTitleElement () {\n    const len = this.group_.childNodes.length;\n    for (let i = 0; i < len; ++i) {\n      const child = this.group_.childNodes.item(i);\n      if (child && child.tagName === 'title') {\n        return child;\n      }\n    }\n    return null;\n  }\n\n  /**\n   * Set the name of this layer.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setName (name, hrService) {\n    const previousName = this.name_;\n    name = toXml(name);\n    // now change the underlying title element contents\n    const title = this.getTitleElement();\n    if (title) {\n      $(title).empty();\n      title.textContent = name;\n      this.name_ = name;\n      if (hrService) {\n        hrService.changeElement(title, {'#text': previousName});\n      }\n      return this.name_;\n    }\n    return null;\n  }\n\n  /**\n   * Remove this layer's group from the DOM. No more functions on group can be called after this.\n   * @param {SVGGElement} children - The children to append to this layer.\n   * @returns {SVGGElement} The layer SVG group that was just removed.\n   */\n  removeGroup () {\n    const parent = this.group_.parentNode;\n    const group = parent.removeChild(this.group_);\n    this.group_ = undefined;\n    return group;\n  }\n}\n/**\n * @property {string} CLASS_NAME - class attribute assigned to all layer groups.\n */\nLayer.CLASS_NAME = 'layer';\n\n/**\n * @property {RegExp} CLASS_REGEX - Used to test presence of class Layer.CLASS_NAME\n */\nLayer.CLASS_REGEX = new RegExp('(\\\\s|^)' + Layer.CLASS_NAME + '(\\\\s|$)');\n\n/**\n * Add class `Layer.CLASS_NAME` to the element (usually `class='layer'`).\n *\n * @param {SVGGElement} elem - The SVG element to update\n * @returns {undefined}\n */\nfunction addLayerClass (elem) {\n  const classes = elem.getAttribute('class');\n  if (classes === null || classes === undefined || !classes.length) {\n    elem.setAttribute('class', Layer.CLASS_NAME);\n  } else if (!Layer.CLASS_REGEX.test(classes)) {\n    elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);\n  }\n}\n\nexport default Layer;\n","/**\n * HistoryRecordingService component of history\n * @module history\n * @license MIT\n * @copyright 2016 Flint O'Brien\n */\n\nimport {\n  BatchCommand, MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand\n} from './history.js';\n\n/**\n * History recording service.\n *\n * A self-contained service interface for recording history. Once injected, no other dependencies\n * or globals are required (example: UndoManager, command types, etc.). Easy to mock for unit tests.\n * Built on top of history classes in history.js.\n *\n * There is a simple start/end interface for batch commands.\n *\n * HistoryRecordingService.NO_HISTORY is a singleton that can be passed in to functions\n * that record history. This helps when the caller requires that no history be recorded.\n *\n * The following will record history: insert, batch, insert.\n * @example\n * hrService = new history.HistoryRecordingService(this.undoMgr);\n * hrService.insertElement(elem, text);         // add simple command to history.\n * hrService.startBatchCommand('create two elements');\n * hrService.changeElement(elem, attrs, text);  // add to batchCommand\n * hrService.changeElement(elem, attrs2, text); // add to batchCommand\n * hrService.endBatchCommand();                  // add batch command with two change commands to history.\n * hrService.insertElement(elem, text);         // add simple command to history.\n *\n * @example\n * // Note that all functions return this, so commands can be chained, like so:\n * hrService\n *   .startBatchCommand('create two elements')\n *   .insertElement(elem, text)\n *   .changeElement(elem, attrs, text)\n *   .endBatchCommand();\n *\n * @memberof module:history\n */\nclass HistoryRecordingService {\n  /**\n  * @param {history.UndoManager|null} undoManager - The undo manager.\n  *     A value of `null` is valid for cases where no history recording is required.\n  *     See singleton: {@link module:history.HistoryRecordingService.HistoryRecordingService.NO_HISTORY}\n  */\n  constructor (undoManager) {\n    this.undoManager_ = undoManager;\n    this.currentBatchCommand_ = null;\n    this.batchCommandStack_ = [];\n  }\n\n  /**\n   * Start a batch command so multiple commands can recorded as a single history command.\n   * Requires a corresponding call to endBatchCommand. Start and end commands can be nested.\n   *\n   * @param {string} text - Optional string describing the batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  startBatchCommand (text) {\n    if (!this.undoManager_) { return this; }\n    this.currentBatchCommand_ = new BatchCommand(text);\n    this.batchCommandStack_.push(this.currentBatchCommand_);\n    return this;\n  }\n\n  /**\n   * End a batch command and add it to the history or a parent batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  endBatchCommand () {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      const batchCommand = this.currentBatchCommand_;\n      this.batchCommandStack_.pop();\n      const {length} = this.batchCommandStack_;\n      this.currentBatchCommand_ = length ? this.batchCommandStack_[length - 1] : null;\n      this.addCommand_(batchCommand);\n    }\n    return this;\n  }\n\n  /**\n   * Add a `MoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was moved\n   * @param {Element} oldNextSibling - The element's next sibling before it was moved\n   * @param {Element} oldParent - The element's parent before it was moved\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  moveElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new MoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add an `InsertElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was added\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  insertElement (elem, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new InsertElementCommand(elem, text));\n    return this;\n  }\n\n  /**\n   * Add a `RemoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was removed\n   * @param {Element} oldNextSibling - The element's next sibling before it was removed\n   * @param {Element} oldParent - The element's parent before it was removed\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  removeElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new RemoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add a `ChangeElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was changed\n   * @param {module:history.CommandAttributes} attrs - An object with the attributes to be changed and the values they had *before* the change\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  changeElement (elem, attrs, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new ChangeElementCommand(elem, attrs, text));\n    return this;\n  }\n\n  /**\n   * Private function to add a command to the history or current batch command.\n   * @private\n   * @param {Command} cmd\n   * @returns {module:history.HistoryRecordingService}\n   */\n  addCommand_ (cmd) {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      this.currentBatchCommand_.addSubCommand(cmd);\n    } else {\n      this.undoManager_.addCommandToHistory(cmd);\n    }\n  }\n}\n/**\n * @memberof module:history.HistoryRecordingService\n * @property {module:history.HistoryRecordingService} NO_HISTORY - Singleton that can be passed to functions that record history, but the caller requires that no history be recorded.\n */\nHistoryRecordingService.NO_HISTORY = new HistoryRecordingService();\nexport default HistoryRecordingService;\n","/* globals jQuery */\n/**\n * Tools for drawing\n * @module draw\n * @license MIT\n * @copyright 2011 Jeff Schiller\n */\n\nimport Layer from './layer.js';\nimport HistoryRecordingService from './historyrecording.js';\n\nimport {NS} from './namespaces.js';\nimport {isOpera} from './browser.js';\nimport {\n  toXml, getElem,\n  copyElem as utilCopyElem\n} from './utilities.js';\nimport {\n  BatchCommand, RemoveElementCommand, MoveElementCommand, ChangeElementCommand\n} from './history.js';\n\nconst $ = jQuery;\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use'.split(',');\n\nconst RandomizeModes = {\n  LET_DOCUMENT_DECIDE: 0,\n  ALWAYS_RANDOMIZE: 1,\n  NEVER_RANDOMIZE: 2\n};\nlet randIds = RandomizeModes.LET_DOCUMENT_DECIDE;\n// Array with current disabled elements (for in-group editing)\nlet disabledElems = [];\n\n/**\n * Get a HistoryRecordingService.\n * @param {module:history.HistoryRecordingService} [hrService] - if exists, return it instead of creating a new service.\n * @returns {module:history.HistoryRecordingService}\n */\nfunction historyRecordingService (hrService) {\n  return hrService || new HistoryRecordingService(canvas_.undoMgr);\n}\n\n/**\n * Find the layer name in a group element.\n * @param {Element} group The group element to search in.\n * @returns {string} The layer name or empty string.\n */\nfunction findLayerNameInGroup (group) {\n  return $('title', group).text() ||\n    (isOpera() && group.querySelectorAll\n      // Hack for Opera 10.60\n      ? $(group.querySelectorAll('title')).text()\n      : '');\n}\n\n/**\n * Given a set of names, return a new unique name.\n * @param {string[]} existingLayerNames - Existing layer names.\n * @returns {string} - The new name.\n */\nfunction getNewLayerName (existingLayerNames) {\n  let i = 1;\n  // TODO(codedread): What about internationalization of \"Layer\"?\n  while (existingLayerNames.includes(('Layer ' + i))) { i++; }\n  return 'Layer ' + i;\n}\n\n/**\n * This class encapsulates the concept of a SVG-edit drawing.\n */\nexport class Drawing {\n  /**\n  * @param {SVGSVGElement} svgElem - The SVG DOM Element that this JS object\n  *     encapsulates.  If the svgElem has a se:nonce attribute on it, then\n  *     IDs will use the nonce as they are generated.\n  * @param {string} [optIdPrefix=svg_] - The ID prefix to use.\n  * @throws {Error} If not initialized with an SVG element\n  */\n  constructor (svgElem, optIdPrefix) {\n    if (!svgElem || !svgElem.tagName || !svgElem.namespaceURI ||\n      svgElem.tagName !== 'svg' || svgElem.namespaceURI !== NS.SVG) {\n      throw new Error('Error: svgedit.draw.Drawing instance initialized without a <svg> element');\n    }\n\n    /**\n    * The SVG DOM Element that represents this drawing.\n    * @type {SVGSVGElement}\n    */\n    this.svgElem_ = svgElem;\n\n    /**\n    * The latest object number used in this drawing.\n    * @type {Integer}\n    */\n    this.obj_num = 0;\n\n    /**\n    * The prefix to prepend to each element id in the drawing.\n    * @type {string}\n    */\n    this.idPrefix = optIdPrefix || 'svg_';\n\n    /**\n    * An array of released element ids to immediately reuse.\n    * @type {Integer[]}\n    */\n    this.releasedNums = [];\n\n    /**\n    * The z-ordered array of Layer objects. Each layer has a name\n    * and group element.\n    * The first layer is the one at the bottom of the rendering.\n    * @type {Layer[]}\n    */\n    this.all_layers = [];\n\n    /**\n    * Map of all_layers by name.\n    *\n    * Note: Layers are ordered, but referenced externally by name; so, we need both container\n    * types depending on which function is called (i.e. all_layers and layer_map).\n    *\n    * @type {PlainObject.<string, Layer>}\n    */\n    this.layer_map = {};\n\n    /**\n    * The current layer being used.\n    * @type {Layer}\n    */\n    this.current_layer = null;\n\n    /**\n    * The nonce to use to uniquely identify elements across drawings.\n    * @type {!String}\n    */\n    this.nonce_ = '';\n    const n = this.svgElem_.getAttributeNS(NS.SE, 'nonce');\n    // If already set in the DOM, use the nonce throughout the document\n    // else, if randomizeIds(true) has been called, create and set the nonce.\n    if (!!n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {\n      this.nonce_ = n;\n    } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {\n      this.setNonce(Math.floor(Math.random() * 100001));\n    }\n  }\n\n  /**\n   * @param {string} id Element ID to retrieve\n   * @returns {Element} SVG element within the root SVGSVGElement\n  */\n  getElem_ (id) {\n    if (this.svgElem_.querySelector) {\n      // querySelector lookup\n      return this.svgElem_.querySelector('#' + id);\n    }\n    // jQuery lookup: twice as slow as xpath in FF\n    return $(this.svgElem_).find('[id=' + id + ']')[0];\n  }\n\n  /**\n   * @returns {SVGSVGElement}\n   */\n  getSvgElem () {\n    return this.svgElem_;\n  }\n\n  /**\n   * @returns {!(string|Integer)} The previously set nonce\n   */\n  getNonce () {\n    return this.nonce_;\n  }\n\n  /**\n   * @param {!(string|Integer)} n The nonce to set\n   * @returns {undefined}\n   */\n  setNonce (n) {\n    this.svgElem_.setAttributeNS(NS.XMLNS, 'xmlns:se', NS.SE);\n    this.svgElem_.setAttributeNS(NS.SE, 'se:nonce', n);\n    this.nonce_ = n;\n  }\n\n  /**\n   * Clears any previously set nonce.\n   * @returns {undefined}\n   */\n  clearNonce () {\n    // We deliberately leave any se:nonce attributes alone,\n    // we just don't use it to randomize ids.\n    this.nonce_ = '';\n  }\n\n  /**\n   * Returns the latest object id as a string.\n   * @returns {string} The latest object Id.\n   */\n  getId () {\n    return this.nonce_\n      ? this.idPrefix + this.nonce_ + '_' + this.obj_num\n      : this.idPrefix + this.obj_num;\n  }\n\n  /**\n   * Returns the next object Id as a string.\n   * @returns {string} The next object Id to use.\n   */\n  getNextId () {\n    const oldObjNum = this.obj_num;\n    let restoreOldObjNum = false;\n\n    // If there are any released numbers in the release stack,\n    // use the last one instead of the next obj_num.\n    // We need to temporarily use obj_num as that is what getId() depends on.\n    if (this.releasedNums.length > 0) {\n      this.obj_num = this.releasedNums.pop();\n      restoreOldObjNum = true;\n    } else {\n      // If we are not using a released id, then increment the obj_num.\n      this.obj_num++;\n    }\n\n    // Ensure the ID does not exist.\n    let id = this.getId();\n    while (this.getElem_(id)) {\n      if (restoreOldObjNum) {\n        this.obj_num = oldObjNum;\n        restoreOldObjNum = false;\n      }\n      this.obj_num++;\n      id = this.getId();\n    }\n    // Restore the old object number if required.\n    if (restoreOldObjNum) {\n      this.obj_num = oldObjNum;\n    }\n    return id;\n  }\n\n  /**\n   * Releases the object Id, letting it be used as the next id in getNextId().\n   * This method DOES NOT remove any elements from the DOM, it is expected\n   * that client code will do this.\n   * @param {string} id - The id to release.\n   * @returns {boolean} True if the id was valid to be released, false otherwise.\n  */\n  releaseId (id) {\n    // confirm if this is a valid id for this Document, else return false\n    const front = this.idPrefix + (this.nonce_ ? this.nonce_ + '_' : '');\n    if (typeof id !== 'string' || !id.startsWith(front)) {\n      return false;\n    }\n    // extract the obj_num of this id\n    const num = parseInt(id.substr(front.length), 10);\n\n    // if we didn't get a positive number or we already released this number\n    // then return false.\n    if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {\n      return false;\n    }\n\n    // push the released number into the released queue\n    this.releasedNums.push(num);\n\n    return true;\n  }\n\n  /**\n   * Returns the number of layers in the current drawing.\n   * @returns {Integer} The number of layers in the current drawing.\n  */\n  getNumLayers () {\n    return this.all_layers.length;\n  }\n\n  /**\n   * Check if layer with given name already exists.\n   * @param {string} name - The layer name to check\n   * @returns {boolean}\n  */\n  hasLayer (name) {\n    return this.layer_map[name] !== undefined;\n  }\n\n  /**\n   * Returns the name of the ith layer. If the index is out of range, an empty string is returned.\n   * @param {Integer} i - The zero-based index of the layer you are querying.\n   * @returns {string} The name of the ith layer (or the empty string if none found)\n  */\n  getLayerName (i) {\n    return i >= 0 && i < this.getNumLayers() ? this.all_layers[i].getName() : '';\n  }\n\n  /**\n   * @returns {SVGGElement|null} The SVGGElement representing the current layer.\n   */\n  getCurrentLayer () {\n    return this.current_layer ? this.current_layer.getGroup() : null;\n  }\n\n  /**\n   * Get a layer by name.\n   * @param {string} name\n   * @returns {SVGGElement} The SVGGElement representing the named layer or null.\n   */\n  getLayerByName (name) {\n    const layer = this.layer_map[name];\n    return layer ? layer.getGroup() : null;\n  }\n\n  /**\n   * Returns the name of the currently selected layer. If an error occurs, an empty string\n   * is returned.\n   * @returns {string} The name of the currently active layer (or the empty string if none found).\n  */\n  getCurrentLayerName () {\n    return this.current_layer ? this.current_layer.getName() : '';\n  }\n\n  /**\n   * Set the current layer's name.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setCurrentLayerName (name, hrService) {\n    let finalName = null;\n    if (this.current_layer) {\n      const oldName = this.current_layer.getName();\n      finalName = this.current_layer.setName(name, hrService);\n      if (finalName) {\n        delete this.layer_map[oldName];\n        this.layer_map[finalName] = this.current_layer;\n      }\n    }\n    return finalName;\n  }\n\n  /**\n   * Set the current layer's position.\n   * @param {Integer} newpos - The zero-based index of the new position of the layer. Range should be 0 to layers-1\n   * @returns {{title: SVGGElement, previousName: string}|null} If the name was changed, returns {title:SVGGElement, previousName:string}; otherwise null.\n   */\n  setCurrentLayerPosition (newpos) {\n    const layerCount = this.getNumLayers();\n    if (!this.current_layer || newpos < 0 || newpos >= layerCount) {\n      return null;\n    }\n\n    let oldpos;\n    for (oldpos = 0; oldpos < layerCount; ++oldpos) {\n      if (this.all_layers[oldpos] === this.current_layer) { break; }\n    }\n    // some unknown error condition (current_layer not in all_layers)\n    if (oldpos === layerCount) { return null; }\n\n    if (oldpos !== newpos) {\n      // if our new position is below us, we need to insert before the node after newpos\n      const currentGroup = this.current_layer.getGroup();\n      const oldNextSibling = currentGroup.nextSibling;\n\n      let refGroup = null;\n      if (newpos > oldpos) {\n        if (newpos < layerCount - 1) {\n          refGroup = this.all_layers[newpos + 1].getGroup();\n        }\n      // if our new position is above us, we need to insert before the node at newpos\n      } else {\n        refGroup = this.all_layers[newpos].getGroup();\n      }\n      this.svgElem_.insertBefore(currentGroup, refGroup); // Ok to replace with `refGroup.before(currentGroup);`?\n\n      this.identifyLayers();\n      this.setCurrentLayer(this.getLayerName(newpos));\n\n      return {\n        currentGroup,\n        oldNextSibling\n      };\n    }\n    return null;\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeLayer (hrService) {\n    const currentGroup = this.current_layer.getGroup();\n    const prevGroup = $(currentGroup).prev()[0];\n    if (!prevGroup) { return; }\n\n    hrService.startBatchCommand('Merge Layer');\n\n    const layerNextSibling = currentGroup.nextSibling;\n    hrService.removeElement(currentGroup, layerNextSibling, this.svgElem_);\n\n    while (currentGroup.firstChild) {\n      const child = currentGroup.firstChild;\n      if (child.localName === 'title') {\n        hrService.removeElement(child, child.nextSibling, currentGroup);\n        child.remove();\n        continue;\n      }\n      const oldNextSibling = child.nextSibling;\n      prevGroup.append(child);\n      hrService.moveElement(child, oldNextSibling, currentGroup);\n    }\n\n    // Remove current layer's group\n    this.current_layer.removeGroup();\n    // Remove the current layer and set the previous layer as the new current layer\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index > 0) {\n      const name = this.current_layer.getName();\n      this.current_layer = this.all_layers[index - 1];\n      this.all_layers.splice(index, 1);\n      delete this.layer_map[name];\n    }\n\n    hrService.endBatchCommand();\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeAllLayers (hrService) {\n    // Set the current layer to the last layer.\n    this.current_layer = this.all_layers[this.all_layers.length - 1];\n\n    hrService.startBatchCommand('Merge all Layers');\n    while (this.all_layers.length > 1) {\n      this.mergeLayer(hrService);\n    }\n    hrService.endBatchCommand();\n  }\n\n  /**\n   * Sets the current layer. If the name is not a valid layer name, then this\n   * function returns `false`. Otherwise it returns `true`. This is not an\n   * undo-able action.\n   * @param {string} name - The name of the layer you want to switch to.\n   * @returns {boolean} `true` if the current layer was switched, otherwise `false`\n   */\n  setCurrentLayer (name) {\n    const layer = this.layer_map[name];\n    if (layer) {\n      if (this.current_layer) {\n        this.current_layer.deactivate();\n      }\n      this.current_layer = layer;\n      this.current_layer.activate();\n      return true;\n    }\n    return false;\n  }\n\n  /**\n   * Deletes the current layer from the drawing and then clears the selection.\n   * This function then calls the 'changed' handler.  This is an undoable action.\n   * @todo Does this actually call the 'changed' handler?\n   * @returns {SVGGElement} The SVGGElement of the layer removed or null.\n   */\n  deleteCurrentLayer () {\n    if (this.current_layer && this.getNumLayers() > 1) {\n      const oldLayerGroup = this.current_layer.removeGroup();\n      this.identifyLayers();\n      return oldLayerGroup;\n    }\n    return null;\n  }\n\n  /**\n   * Updates layer system and sets the current layer to the\n   * top-most layer (last `<g>` child of this drawing).\n   * @returns {undefined}\n  */\n  identifyLayers () {\n    this.all_layers = [];\n    this.layer_map = {};\n    const numchildren = this.svgElem_.childNodes.length;\n    // loop through all children of SVG element\n    const orphans = [], layernames = [];\n    let layer = null;\n    let childgroups = false;\n    for (let i = 0; i < numchildren; ++i) {\n      const child = this.svgElem_.childNodes.item(i);\n      // for each g, find its layer name\n      if (child && child.nodeType === 1) {\n        if (child.tagName === 'g') {\n          childgroups = true;\n          const name = findLayerNameInGroup(child);\n          if (name) {\n            layernames.push(name);\n            layer = new Layer(name, child);\n            this.all_layers.push(layer);\n            this.layer_map[name] = layer;\n          } else {\n            // if group did not have a name, it is an orphan\n            orphans.push(child);\n          }\n        } else if (visElems.includes(child.nodeName)) {\n          // Child is \"visible\" (i.e. not a <title> or <defs> element), so it is an orphan\n          orphans.push(child);\n        }\n      }\n    }\n\n    // If orphans or no layers found, create a new layer and add all the orphans to it\n    if (orphans.length > 0 || !childgroups) {\n      layer = new Layer(getNewLayerName(layernames), null, this.svgElem_);\n      layer.appendChildren(orphans);\n      this.all_layers.push(layer);\n      this.layer_map[name] = layer;\n    } else {\n      layer.activate();\n    }\n    this.current_layer = layer;\n  }\n\n  /**\n   * Creates a new top-level layer in the drawing with the given name and\n   * makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  createLayer (name, hrService) {\n    if (this.current_layer) {\n      this.current_layer.deactivate();\n    }\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Crate new layer and add to DOM as last layer\n    const layer = new Layer(name, null, this.svgElem_);\n    // Like to assume hrService exists, but this is backwards compatible with old version of createLayer.\n    if (hrService) {\n      hrService.startBatchCommand('Create Layer');\n      hrService.insertElement(layer.getGroup());\n      hrService.endBatchCommand();\n    }\n\n    this.all_layers.push(layer);\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return layer.getGroup();\n  }\n\n  /**\n   * Creates a copy of the current layer with the given name and makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  cloneLayer (name, hrService) {\n    if (!this.current_layer) { return null; }\n    this.current_layer.deactivate();\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Create new group and add to DOM just after current_layer\n    const currentGroup = this.current_layer.getGroup();\n    const layer = new Layer(name, currentGroup, this.svgElem_);\n    const group = layer.getGroup();\n\n    // Clone children\n    const children = currentGroup.childNodes;\n    for (let index = 0; index < children.length; index++) {\n      const ch = children[index];\n      if (ch.localName === 'title') { continue; }\n      group.append(this.copyElem(ch));\n    }\n\n    if (hrService) {\n      hrService.startBatchCommand('Duplicate Layer');\n      hrService.insertElement(group);\n      hrService.endBatchCommand();\n    }\n\n    // Update layer containers and current_layer.\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index >= 0) {\n      this.all_layers.splice(index + 1, 0, layer);\n    } else {\n      this.all_layers.push(layer);\n    }\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return group;\n  }\n\n  /**\n   * Returns whether the layer is visible.  If the layer name is not valid,\n   * then this function returns `false`.\n   * @param {string} layerName - The name of the layer which you want to query.\n   * @returns {boolean} The visibility state of the layer, or `false` if the layer name was invalid.\n  */\n  getLayerVisibility (layerName) {\n    const layer = this.layer_map[layerName];\n    return layer ? layer.isVisible() : false;\n  }\n\n  /**\n   * Sets the visibility of the layer. If the layer name is not valid, this\n   * function returns `null`, otherwise it returns the `SVGElement` representing\n   * the layer. This is an undo-able action.\n   * @param {string} layerName - The name of the layer to change the visibility\n   * @param {boolean} bVisible - Whether the layer should be visible\n   * @returns {?SVGGElement} The SVGGElement representing the layer if the\n   *   `layerName` was valid, otherwise `null`.\n  */\n  setLayerVisibility (layerName, bVisible) {\n    if (typeof bVisible !== 'boolean') {\n      return null;\n    }\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    layer.setVisible(bVisible);\n    return layer.getGroup();\n  }\n\n  /**\n   * Returns the opacity of the given layer.  If the input name is not a layer, `null` is returned.\n   * @param {string} layerName - name of the layer on which to get the opacity\n   * @returns {?Float} The opacity value of the given layer.  This will be a value between 0.0 and 1.0, or `null`\n   * if `layerName` is not a valid layer\n  */\n  getLayerOpacity (layerName) {\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    return layer.getOpacity();\n  }\n\n  /**\n   * Sets the opacity of the given layer.  If the input name is not a layer,\n   * nothing happens. If opacity is not a value between 0.0 and 1.0, then\n   * nothing happens.\n   * NOTE: this function exists solely to apply a highlighting/de-emphasis\n   * effect to a layer. When it is possible for a user to affect the opacity\n   * of a layer, we will need to allow this function to produce an undo-able\n   * action.\n   * @param {string} layerName - Name of the layer on which to set the opacity\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n  */\n  setLayerOpacity (layerName, opacity) {\n    if (typeof opacity !== 'number' || opacity < 0.0 || opacity > 1.0) {\n      return;\n    }\n    const layer = this.layer_map[layerName];\n    if (layer) {\n      layer.setOpacity(opacity);\n    }\n  }\n\n  /**\n   * Create a clone of an element, updating its ID and its children's IDs when needed.\n   * @param {Element} el - DOM element to clone\n   * @returns {Element}\n   */\n  copyElem (el) {\n    const self = this;\n    const getNextIdClosure = function () { return self.getNextId(); };\n    return utilCopyElem(el, getNextIdClosure);\n  }\n}\n\n/**\n * Called to ensure that drawings will or will not have randomized ids.\n * The currentDrawing will have its nonce set if it doesn't already.\n * @function module:draw.randomizeIds\n * @param {boolean} enableRandomization - flag indicating if documents should have randomized ids\n * @param {draw.Drawing} currentDrawing\n * @returns {undefined}\n */\nexport const randomizeIds = function (enableRandomization, currentDrawing) {\n  randIds = enableRandomization === false\n    ? RandomizeModes.NEVER_RANDOMIZE\n    : RandomizeModes.ALWAYS_RANDOMIZE;\n\n  if (randIds === RandomizeModes.ALWAYS_RANDOMIZE && !currentDrawing.getNonce()) {\n    currentDrawing.setNonce(Math.floor(Math.random() * 100001));\n  } else if (randIds === RandomizeModes.NEVER_RANDOMIZE && currentDrawing.getNonce()) {\n    currentDrawing.clearNonce();\n  }\n};\n\n// Layer API Functions\n\n/**\n* Group: Layers\n*/\n\n/**\n * @see {@link https://api.jquery.com/jQuery.data/}\n * @name external:jQuery.data\n */\n\n/**\n * @interface module:draw.DrawCanvasInit\n * @property {module:path.pathActions} pathActions\n * @property {external:jQuery.data} elData\n * @property {module:history.UndoManager} undoMgr\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentGroup\n * @returns {Element}\n */\n/**\n * @function module:draw.DrawCanvasInit#setCurrentGroup\n * @param {Element} cg\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentDrawing\n * @returns {module:draw.Drawing}\n */\n/**\n * @function module:draw.DrawCanvasInit#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * Run the callback function associated with the given event\n * @function module:draw.DrawCanvasInit#call\n * @param {\"changed\"|\"contextset\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset} arg - Argument to pass through to the callback\n * function. If the event is \"changed\", a (single-item) array of `Element`s is\n * passed. If the event is \"contextset\", the arg is `null` or `Element`.\n * @returns {undefined}\n */\n/**\n * @function module:draw.DrawCanvasInit#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#changeSVGContent\n * @returns {undefined}\n */\n\nlet canvas_;\n/**\n* @function module:draw.init\n* @param {module:draw.DrawCanvasInit} canvas\n* @returns {undefined}\n*/\nexport const init = function (canvas) {\n  canvas_ = canvas;\n};\n\n/**\n* Updates layer system.\n* @function module:draw.identifyLayers\n* @returns {undefined}\n*/\nexport const identifyLayers = function () {\n  leaveContext();\n  canvas_.getCurrentDrawing().identifyLayers();\n};\n\n/**\n* Creates a new top-level layer in the drawing with the given name, sets the current layer\n* to it, and then clears the selection. This function then calls the 'changed' handler.\n* This is an undoable action.\n* @function module:draw.createLayer\n* @param {string} name - The given name\n* @param {module:history.HistoryRecordingService} hrService\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nexport const createLayer = function (name, hrService) {\n  const newLayer = canvas_.getCurrentDrawing().createLayer(\n    name,\n    historyRecordingService(hrService)\n  );\n  canvas_.clearSelection();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n * Creates a new top-level layer in the drawing with the given name, copies all the current layer's contents\n * to it, and then clears the selection. This function then calls the 'changed' handler.\n * This is an undoable action.\n * @function module:draw.cloneLayer\n * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n * @param {module:history.HistoryRecordingService} hrService - History recording service\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @returns {undefined}\n */\nexport const cloneLayer = function (name, hrService) {\n  // Clone the current layer and make the cloned layer the new current layer\n  const newLayer = canvas_.getCurrentDrawing().cloneLayer(name, historyRecordingService(hrService));\n\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n* Deletes the current layer from the drawing and then clears the selection. This function\n* then calls the 'changed' handler. This is an undoable action.\n* @function module:draw.deleteCurrentLayer\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} `true` if an old layer group was found to delete\n*/\nexport const deleteCurrentLayer = function () {\n  let currentLayer = canvas_.getCurrentDrawing().getCurrentLayer();\n  const {nextSibling} = currentLayer;\n  const parent = currentLayer.parentNode;\n  currentLayer = canvas_.getCurrentDrawing().deleteCurrentLayer();\n  if (currentLayer) {\n    const batchCmd = new BatchCommand('Delete Layer');\n    // store in our Undo History\n    batchCmd.addSubCommand(new RemoveElementCommand(currentLayer, nextSibling, parent));\n    canvas_.addCommandToHistory(batchCmd);\n    canvas_.clearSelection();\n    canvas_.call('changed', [parent]);\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the current layer. If the name is not a valid layer name, then this function returns\n* false. Otherwise it returns true. This is not an undo-able action.\n* @function module:draw.setCurrentLayer\n* @param {string} name - The name of the layer you want to switch to.\n* @returns {boolean} true if the current layer was switched, otherwise false\n*/\nexport const setCurrentLayer = function (name) {\n  const result = canvas_.getCurrentDrawing().setCurrentLayer(toXml(name));\n  if (result) {\n    canvas_.clearSelection();\n  }\n  return result;\n};\n\n/**\n* Renames the current layer. If the layer name is not valid (i.e. unique), then this function\n* does nothing and returns `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.renameCurrentLayer\n* @param {string} newName - the new name you want to give the current layer. This name must\n* be unique among all layer names.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Whether the rename succeeded\n*/\nexport const renameCurrentLayer = function (newName) {\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getCurrentLayer();\n  if (layer) {\n    const result = drawing.setCurrentLayerName(newName, historyRecordingService());\n    if (result) {\n      canvas_.call('changed', [layer]);\n      return true;\n    }\n  }\n  return false;\n};\n\n/**\n* Changes the position of the current layer to the new value. If the new index is not valid,\n* this function does nothing and returns false, otherwise it returns true. This is an\n* undo-able action.\n* @function module:draw.setCurrentLayerPosition\n* @param {Integer} newPos - The zero-based index of the new position of the layer. This should be between\n* 0 and (number of layers - 1)\n* @returns {boolean} `true` if the current layer position was changed, `false` otherwise.\n*/\nexport const setCurrentLayerPosition = function (newPos) {\n  const drawing = canvas_.getCurrentDrawing();\n  const result = drawing.setCurrentLayerPosition(newPos);\n  if (result) {\n    canvas_.addCommandToHistory(new MoveElementCommand(result.currentGroup, result.oldNextSibling, canvas_.getSVGContent()));\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the visibility of the layer. If the layer name is not valid, this function return\n* `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.setLayerVisibility\n* @param {string} layerName - The name of the layer to change the visibility\n* @param {boolean} bVisible - Whether the layer should be visible\n* @returns {boolean} true if the layer's visibility was set, false otherwise\n*/\nexport const setLayerVisibility = function (layerName, bVisible) {\n  const drawing = canvas_.getCurrentDrawing();\n  const prevVisibility = drawing.getLayerVisibility(layerName);\n  const layer = drawing.setLayerVisibility(layerName, bVisible);\n  if (layer) {\n    const oldDisplay = prevVisibility ? 'inline' : 'none';\n    canvas_.addCommandToHistory(new ChangeElementCommand(layer, {display: oldDisplay}, 'Layer Visibility'));\n  } else {\n    return false;\n  }\n\n  if (layer === drawing.getCurrentLayer()) {\n    canvas_.clearSelection();\n    canvas_.pathActions.clear();\n  }\n  // call('changed', [selected]);\n  return true;\n};\n\n/**\n* Moves the selected elements to layerName. If the name is not a valid layer name, then `false`\n* is returned. Otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.moveSelectedToLayer\n* @param {string} layerName - The name of the layer you want to which you want to move the selected elements\n* @returns {boolean} Whether the selected elements were moved to the layer.\n*/\nexport const moveSelectedToLayer = function (layerName) {\n  // find the layer\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getLayerByName(layerName);\n  if (!layer) { return false; }\n\n  const batchCmd = new BatchCommand('Move Elements to Layer');\n\n  // loop for each selected element and move it\n  const selElems = canvas_.getSelectedElements();\n  let i = selElems.length;\n  while (i--) {\n    const elem = selElems[i];\n    if (!elem) { continue; }\n    const oldNextSibling = elem.nextSibling;\n    // TODO: this is pretty brittle!\n    const oldLayer = elem.parentNode;\n    layer.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldLayer));\n  }\n\n  canvas_.addCommandToHistory(batchCmd);\n\n  return true;\n};\n\n/**\n* @function module:draw.mergeLayer\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeLayer = function (hrService) {\n  canvas_.getCurrentDrawing().mergeLayer(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* @function module:draw.mergeAllLayers\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeAllLayers = function (hrService) {\n  canvas_.getCurrentDrawing().mergeAllLayers(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* Return from a group context to the regular kind, make any previously\n* disabled elements enabled again.\n* @function module:draw.leaveContext\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const leaveContext = function () {\n  const len = disabledElems.length;\n  if (len) {\n    for (let i = 0; i < len; i++) {\n      const elem = disabledElems[i];\n      const orig = canvas_.elData(elem, 'orig_opac');\n      if (orig !== 1) {\n        elem.setAttribute('opacity', orig);\n      } else {\n        elem.removeAttribute('opacity');\n      }\n      elem.setAttribute('style', 'pointer-events: inherit');\n    }\n    disabledElems = [];\n    canvas_.clearSelection(true);\n    canvas_.call('contextset', null);\n  }\n  canvas_.setCurrentGroup(null);\n};\n\n/**\n* Set the current context (for in-group editing).\n* @function module:draw.setContext\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const setContext = function (elem) {\n  leaveContext();\n  if (typeof elem === 'string') {\n    elem = getElem(elem);\n  }\n\n  // Edit inside this group\n  canvas_.setCurrentGroup(elem);\n\n  // Disable other elements\n  $(elem).parentsUntil('#svgcontent').andSelf().siblings().each(function () {\n    const opac = this.getAttribute('opacity') || 1;\n    // Store the original's opacity\n    canvas_.elData(this, 'orig_opac', opac);\n    this.setAttribute('opacity', opac * 0.33);\n    this.setAttribute('style', 'pointer-events: none');\n    disabledElems.push(this);\n  });\n\n  canvas_.clearSelection();\n  canvas_.call('contextset', canvas_.getCurrentGroup());\n};\n\n/**\n* @memberof module:draw\n* @class Layer\n* @see {@link module:layer.Layer}\n*/\nexport {Layer};\n","/**\n * Tools for SVG sanitization\n * @module sanitize\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {getReverseNS, NS} from './namespaces.js';\nimport {isGecko} from './browser.js';\nimport {getHref, setHref, getUrlFromAttr} from './utilities.js';\n\nconst REVERSE_NS = getReverseNS();\n\n// this defines which elements and attributes that we support\nconst svgWhiteList_ = {\n  // SVG Elements\n  a: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'xlink:href', 'xlink:title'],\n  circle: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'r', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  clipPath: ['class', 'clipPathUnits', 'id'],\n  defs: [],\n  style: ['type'],\n  desc: [],\n  ellipse: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  feGaussianBlur: ['class', 'color-interpolation-filters', 'id', 'requiredFeatures', 'stdDeviation'],\n  filter: ['class', 'color-interpolation-filters', 'filterRes', 'filterUnits', 'height', 'id', 'primitiveUnits', 'requiredFeatures', 'width', 'x', 'xlink:href', 'y'],\n  foreignObject: ['class', 'font-size', 'height', 'id', 'opacity', 'requiredFeatures', 'style', 'transform', 'width', 'x', 'y'],\n  g: ['class', 'clip-path', 'clip-rule', 'id', 'display', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'font-family', 'font-size', 'font-style', 'font-weight', 'text-anchor'],\n  image: ['class', 'clip-path', 'clip-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'style', 'systemLanguage', 'transform', 'width', 'x', 'xlink:href', 'xlink:title', 'y'],\n  line: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'x1', 'x2', 'y1', 'y2'],\n  linearGradient: ['class', 'id', 'gradientTransform', 'gradientUnits', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'x1', 'x2', 'xlink:href', 'y1', 'y2'],\n  marker: ['id', 'class', 'markerHeight', 'markerUnits', 'markerWidth', 'orient', 'preserveAspectRatio', 'refX', 'refY', 'systemLanguage', 'viewBox'],\n  mask: ['class', 'height', 'id', 'maskContentUnits', 'maskUnits', 'width', 'x', 'y'],\n  metadata: ['class', 'id'],\n  path: ['class', 'clip-path', 'clip-rule', 'd', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  pattern: ['class', 'height', 'id', 'patternContentUnits', 'patternTransform', 'patternUnits', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xlink:href', 'y'],\n  polygon: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'class', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  polyline: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  radialGradient: ['class', 'cx', 'cy', 'fx', 'fy', 'gradientTransform', 'gradientUnits', 'id', 'r', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'xlink:href'],\n  rect: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'width', 'x', 'y'],\n  stop: ['class', 'id', 'offset', 'requiredFeatures', 'stop-color', 'stop-opacity', 'style', 'systemLanguage'],\n  svg: ['class', 'clip-path', 'clip-rule', 'filter', 'id', 'height', 'mask', 'preserveAspectRatio', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xmlns', 'xmlns:se', 'xmlns:xlink', 'y'],\n  switch: ['class', 'id', 'requiredFeatures', 'systemLanguage'],\n  symbol: ['class', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'opacity', 'preserveAspectRatio', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'viewBox'],\n  text: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'transform', 'x', 'xml:space', 'y'],\n  textPath: ['class', 'id', 'method', 'requiredFeatures', 'spacing', 'startOffset', 'style', 'systemLanguage', 'transform', 'xlink:href'],\n  title: [],\n  tspan: ['class', 'clip-path', 'clip-rule', 'dx', 'dy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'rotate', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'textLength', 'transform', 'x', 'xml:space', 'y'],\n  use: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'transform', 'width', 'x', 'xlink:href', 'y'],\n\n  // MathML Elements\n  annotation: ['encoding'],\n  'annotation-xml': ['encoding'],\n  maction: ['actiontype', 'other', 'selection'],\n  math: ['class', 'id', 'display', 'xmlns'],\n  menclose: ['notation'],\n  merror: [],\n  mfrac: ['linethickness'],\n  mi: ['mathvariant'],\n  mmultiscripts: [],\n  mn: [],\n  mo: ['fence', 'lspace', 'maxsize', 'minsize', 'rspace', 'stretchy'],\n  mover: [],\n  mpadded: ['lspace', 'width', 'height', 'depth', 'voffset'],\n  mphantom: [],\n  mprescripts: [],\n  mroot: [],\n  mrow: ['xlink:href', 'xlink:type', 'xmlns:xlink'],\n  mspace: ['depth', 'height', 'width'],\n  msqrt: [],\n  mstyle: ['displaystyle', 'mathbackground', 'mathcolor', 'mathvariant', 'scriptlevel'],\n  msub: [],\n  msubsup: [],\n  msup: [],\n  mtable: ['align', 'columnalign', 'columnlines', 'columnspacing', 'displaystyle', 'equalcolumns', 'equalrows', 'frame', 'rowalign', 'rowlines', 'rowspacing', 'width'],\n  mtd: ['columnalign', 'columnspan', 'rowalign', 'rowspan'],\n  mtext: [],\n  mtr: ['columnalign', 'rowalign'],\n  munder: [],\n  munderover: [],\n  none: [],\n  semantics: []\n};\n\n// Produce a Namespace-aware version of svgWhitelist\nconst svgWhiteListNS_ = {};\nObject.entries(svgWhiteList_).forEach(function ([elt, atts]) {\n  const attNS = {};\n  Object.entries(atts).forEach(function ([i, att]) {\n    if (att.includes(':')) {\n      const v = att.split(':');\n      attNS[v[1]] = NS[(v[0]).toUpperCase()];\n    } else {\n      attNS[att] = att === 'xmlns' ? NS.XMLNS : null;\n    }\n  });\n  svgWhiteListNS_[elt] = attNS;\n});\n\n/**\n* Sanitizes the input node and its children.\n* It only keeps what is allowed from our whitelist defined above.\n* @function module:sanitize.sanitizeSvg\n* @param {Text|Element} node - The DOM element to be checked (we'll also check its children) or text node to be cleaned up\n* @returns {undefined}\n*/\nexport const sanitizeSvg = function (node) {\n  // Cleanup text nodes\n  if (node.nodeType === 3) { // 3 === TEXT_NODE\n    // Trim whitespace\n    node.nodeValue = node.nodeValue.replace(/^\\s+|\\s+$/g, '');\n    // Remove if empty\n    if (!node.nodeValue.length) {\n      node.remove();\n    }\n  }\n\n  // We only care about element nodes.\n  // Automatically return for all non-element nodes, such as comments, etc.\n  if (node.nodeType !== 1) { // 1 == ELEMENT_NODE\n    return;\n  }\n\n  const doc = node.ownerDocument;\n  const parent = node.parentNode;\n  // can parent ever be null here?  I think the root node's parent is the document...\n  if (!doc || !parent) {\n    return;\n  }\n\n  const allowedAttrs = svgWhiteList_[node.nodeName];\n  const allowedAttrsNS = svgWhiteListNS_[node.nodeName];\n  // if this element is supported, sanitize it\n  if (typeof allowedAttrs !== 'undefined') {\n    const seAttrs = [];\n    let i = node.attributes.length;\n    while (i--) {\n      // if the attribute is not in our whitelist, then remove it\n      // could use jQuery's inArray(), but I don't know if that's any better\n      const attr = node.attributes.item(i);\n      const attrName = attr.nodeName;\n      const attrLocalName = attr.localName;\n      const attrNsURI = attr.namespaceURI;\n      // Check that an attribute with the correct localName in the correct namespace is on\n      // our whitelist or is a namespace declaration for one of our allowed namespaces\n      if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) &&\n        !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {\n        // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.\n        // Bypassing the whitelist to allow se: prefixes.\n        // Is there a more appropriate way to do this?\n        if (attrName.startsWith('se:') || attrName.startsWith('data-')) {\n          seAttrs.push([attrName, attr.value]);\n        }\n        node.removeAttributeNS(attrNsURI, attrLocalName);\n      }\n\n      // Add spaces before negative signs where necessary\n      if (isGecko()) {\n        switch (attrName) {\n        case 'transform':\n        case 'gradientTransform':\n        case 'patternTransform':\n          const val = attr.value.replace(/(\\d)-/g, '$1 -');\n          node.setAttribute(attrName, val);\n          break;\n        }\n      }\n\n      // For the style attribute, rewrite it in terms of XML presentational attributes\n      if (attrName === 'style') {\n        const props = attr.value.split(';');\n        let p = props.length;\n        while (p--) {\n          const [name, val] = props[p].split(':');\n          const styleAttrName = (name || '').trim();\n          const styleAttrVal = (val || '').trim();\n          // Now check that this attribute is supported\n          if (allowedAttrs.includes(styleAttrName)) {\n            node.setAttribute(styleAttrName, styleAttrVal);\n          }\n        }\n        node.removeAttribute('style');\n      }\n    }\n\n    Object.values(seAttrs).forEach(([att, val]) => {\n      node.setAttributeNS(NS.SE, att, val);\n    });\n\n    // for some elements that have a xlink:href, ensure the URI refers to a local element\n    // (but not for links)\n    const href = getHref(node);\n    if (href &&\n      ['filter', 'linearGradient', 'pattern',\n        'radialGradient', 'textPath', 'use'].includes(node.nodeName)) {\n      // TODO: we simply check if the first character is a #, is this bullet-proof?\n      if (href[0] !== '#') {\n        // remove the attribute (but keep the element)\n        setHref(node, '');\n        node.removeAttributeNS(NS.XLINK, 'href');\n      }\n    }\n\n    // Safari crashes on a <use> without a xlink:href, so we just remove the node here\n    if (node.nodeName === 'use' && !getHref(node)) {\n      node.remove();\n      return;\n    }\n    // if the element has attributes pointing to a non-local reference,\n    // need to remove the attribute\n    Object.values(['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'], function (attr) {\n      let val = node.getAttribute(attr);\n      if (val) {\n        val = getUrlFromAttr(val);\n        // simply check for first character being a '#'\n        if (val && val[0] !== '#') {\n          node.setAttribute(attr, '');\n          node.removeAttribute(attr);\n        }\n      }\n    });\n\n    // recurse to children\n    i = node.childNodes.length;\n    while (i--) { sanitizeSvg(node.childNodes.item(i)); }\n  // else (element not supported), remove it\n  } else {\n    // remove all children from this node and insert them before this node\n    // FIXME: in the case of animation elements this will hardly ever be correct\n    const children = [];\n    while (node.hasChildNodes()) {\n      children.push(parent.insertBefore(node.firstChild, node));\n    }\n\n    // remove this node from the document altogether\n    node.remove();\n\n    // call sanitizeSvg on each of those children\n    let i = children.length;\n    while (i--) { sanitizeSvg(children[i]); }\n  }\n};\n","/* globals jQuery */\n/**\n * Recalculate.\n * @module recalculate\n * @license MIT\n */\n\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {convertToNum} from './units.js';\nimport {isWebkit} from './browser.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {getRotationAngle, getHref, getBBox, getRefElem} from './utilities.js';\nimport {BatchCommand, ChangeElementCommand} from './history.js';\nimport {remapElement} from './coords.js';\nimport {\n  isIdentity, matrixMultiply, transformPoint, transformListToTransform,\n  hasMatrixTransform\n} from './math.js';\n\nconst $ = jqPluginSVG(jQuery);\n\nlet context_;\n\n/**\n* @interface module:recalculate.EditorContext\n*/\n/**\n * @function module:recalculate.EditorContext#getSVGRoot\n * @returns {SVGSVGElement} The root DOM element\n */\n/**\n * @function module:recalculate.EditorContext#getStartTransform\n * @returns {string}\n*/\n/**\n * @function module:recalculate.EditorContext#setStartTransform\n * @param {string} transform\n * @returns {undefined}\n */\n\n/**\n* @function module:recalculate.init\n* @param {module:recalculate.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  context_ = editorContext;\n};\n\n/**\n* Updates a `<clipPath>`s values based on the given translation of an element.\n* @function module:recalculate.updateClipPath\n* @param {string} attr - The clip-path attribute value with the clipPath's ID\n* @param {Float} tx - The translation's x value\n* @param {Float} ty - The translation's y value\n* @returns {undefined}\n*/\nexport const updateClipPath = function (attr, tx, ty) {\n  const path = getRefElem(attr).firstChild;\n  const cpXform = getTransformList(path);\n  const newxlate = context_.getSVGRoot().createSVGTransform();\n  newxlate.setTranslate(tx, ty);\n\n  cpXform.appendItem(newxlate);\n\n  // Update clipPath's dimensions\n  recalculateDimensions(path);\n};\n\n/**\n* Decides the course of action based on the element's transform list.\n* @function module:recalculate.recalculateDimensions\n* @param {Element} selected - The DOM element to recalculate\n* @returns {Command} Undo command object with the resulting change\n*/\nexport const recalculateDimensions = function (selected) {\n  if (selected == null) { return null; }\n\n  // Firefox Issue - 1081\n  if (selected.nodeName === 'svg' && navigator.userAgent.includes('Firefox/20')) {\n    return null;\n  }\n\n  const svgroot = context_.getSVGRoot();\n  const tlist = getTransformList(selected);\n\n  // remove any unnecessary transforms\n  if (tlist && tlist.numberOfItems > 0) {\n    let k = tlist.numberOfItems;\n    const noi = k;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 0) {\n        tlist.removeItem(k);\n      // remove identity matrices\n      } else if (xform.type === 1) {\n        if (isIdentity(xform.matrix)) {\n          if (noi === 1) {\n            // Overcome Chrome bug (though only when noi is 1) with\n            //    `removeItem` preventing `removeAttribute` from\n            //    subsequently working\n            // See https://bugs.chromium.org/p/chromium/issues/detail?id=843901\n            selected.removeAttribute('transform');\n            return null;\n          }\n          tlist.removeItem(k);\n        }\n      // remove zero-degree rotations\n      } else if (xform.type === 4) {\n        if (xform.angle === 0) {\n          tlist.removeItem(k);\n        }\n      }\n    }\n    // End here if all it has is a rotation\n    if (tlist.numberOfItems === 1 &&\n        getRotationAngle(selected)) { return null; }\n  }\n\n  // if this element had no transforms, we are done\n  if (!tlist || tlist.numberOfItems === 0) {\n    // Chrome apparently had a bug that requires clearing the attribute first.\n    selected.setAttribute('transform', '');\n    // However, this still next line currently doesn't work at all in Chrome\n    selected.removeAttribute('transform');\n    // selected.transform.baseVal.clear(); // Didn't help for Chrome bug\n    return null;\n  }\n\n  // TODO: Make this work for more than 2\n  if (tlist) {\n    let mxs = [];\n    let k = tlist.numberOfItems;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 1) {\n        mxs.push([xform.matrix, k]);\n      } else if (mxs.length) {\n        mxs = [];\n      }\n    }\n    if (mxs.length === 2) {\n      const mNew = svgroot.createSVGTransformFromMatrix(matrixMultiply(mxs[1][0], mxs[0][0]));\n      tlist.removeItem(mxs[0][1]);\n      tlist.removeItem(mxs[1][1]);\n      tlist.insertItemBefore(mNew, mxs[1][1]);\n    }\n\n    // combine matrix + translate\n    k = tlist.numberOfItems;\n    if (k >= 2 && tlist.getItem(k - 2).type === 1 && tlist.getItem(k - 1).type === 2) {\n      const mt = svgroot.createSVGTransform();\n\n      const m = matrixMultiply(\n        tlist.getItem(k - 2).matrix,\n        tlist.getItem(k - 1).matrix);\n      mt.setMatrix(m);\n      tlist.removeItem(k - 2);\n      tlist.removeItem(k - 2);\n      tlist.appendItem(mt);\n    }\n  }\n\n  // If it still has a single [M] or [R][M], return null too (prevents BatchCommand from being returned).\n  switch (selected.tagName) {\n  // Ignore these elements, as they can absorb the [M]\n  case 'line':\n  case 'polyline':\n  case 'polygon':\n  case 'path':\n    break;\n  default:\n    if ((tlist.numberOfItems === 1 && tlist.getItem(0).type === 1) ||\n        (tlist.numberOfItems === 2 && tlist.getItem(0).type === 1 && tlist.getItem(0).type === 4)) {\n      return null;\n    }\n  }\n\n  // Grouped SVG element\n  const gsvg = $(selected).data('gsvg');\n\n  // we know we have some transforms, so set up return variable\n  const batchCmd = new BatchCommand('Transform');\n\n  // store initial values that will be affected by reducing the transform list\n  let changes = {};\n  let initial = null;\n  let attrs = [];\n  switch (selected.tagName) {\n  case 'line':\n    attrs = ['x1', 'y1', 'x2', 'y2'];\n    break;\n  case 'circle':\n    attrs = ['cx', 'cy', 'r'];\n    break;\n  case 'ellipse':\n    attrs = ['cx', 'cy', 'rx', 'ry'];\n    break;\n  case 'foreignObject':\n  case 'rect':\n  case 'image':\n    attrs = ['width', 'height', 'x', 'y'];\n    break;\n  case 'use':\n  case 'text':\n  case 'tspan':\n    attrs = ['x', 'y'];\n    break;\n  case 'polygon':\n  case 'polyline': {\n    initial = {};\n    initial.points = selected.getAttribute('points');\n    const list = selected.points;\n    const len = list.numberOfItems;\n    changes.points = new Array(len);\n    for (let i = 0; i < len; ++i) {\n      const pt = list.getItem(i);\n      changes.points[i] = {x: pt.x, y: pt.y};\n    }\n    break;\n  } case 'path':\n    initial = {};\n    initial.d = selected.getAttribute('d');\n    changes.d = selected.getAttribute('d');\n    break;\n  } // switch on element type to get initial values\n\n  if (attrs.length) {\n    changes = $(selected).attr(attrs);\n    $.each(changes, function (attr, val) {\n      changes[attr] = convertToNum(attr, val);\n    });\n  } else if (gsvg) {\n    // GSVG exception\n    changes = {\n      x: $(gsvg).attr('x') || 0,\n      y: $(gsvg).attr('y') || 0\n    };\n  }\n\n  // if we haven't created an initial array in polygon/polyline/path, then\n  // make a copy of initial values and include the transform\n  if (initial == null) {\n    initial = $.extend(true, {}, changes);\n    $.each(initial, function (attr, val) {\n      initial[attr] = convertToNum(attr, val);\n    });\n  }\n  // save the start transform value too\n  initial.transform = context_.getStartTransform() || '';\n\n  let oldcenter, newcenter;\n\n  // if it's a regular group, we have special processing to flatten transforms\n  if ((selected.tagName === 'g' && !gsvg) || selected.tagName === 'a') {\n    const box = getBBox(selected);\n\n    oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n    newcenter = transformPoint(\n      box.x + box.width / 2,\n      box.y + box.height / 2,\n      transformListToTransform(tlist).matrix\n    );\n    // let m = svgroot.createSVGMatrix();\n\n    // temporarily strip off the rotate and save the old center\n    const gangle = getRotationAngle(selected);\n    if (gangle) {\n      const a = gangle * Math.PI / 180;\n      let s;\n      if (Math.abs(a) > (1.0e-10)) {\n        s = Math.sin(a) / (1 - Math.cos(a));\n      } else {\n        // FIXME: This blows up if the angle is exactly 0!\n        s = 2 / a;\n      }\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n    const N = tlist.numberOfItems;\n    let tx = 0, ty = 0, operation = 0;\n\n    let firstM;\n    if (N) {\n      firstM = tlist.getItem(0).matrix;\n    }\n\n    let oldStartTransform;\n    // first, if it was a scale then the second-last transform will be it\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      operation = 3; // scale\n\n      // if the children are unrotated, pass the scale down directly\n      // otherwise pass the equivalent matrix() down directly\n      const tm = tlist.getItem(N - 3).matrix,\n        sm = tlist.getItem(N - 2).matrix,\n        tmn = tlist.getItem(N - 1).matrix;\n\n      const children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        tx = 0;\n        ty = 0;\n        if (child.nodeType === 1) {\n          const childTlist = getTransformList(child);\n\n          // some children might not have a transform (<metadata>, <defs>, etc)\n          if (!childTlist) { continue; }\n\n          const m = transformListToTransform(childTlist).matrix;\n\n          // Convert a matrix to a scale if applicable\n          // if (hasMatrixTransform(childTlist) && childTlist.numberOfItems == 1) {\n          //   if (m.b==0 && m.c==0 && m.e==0 && m.f==0) {\n          //     childTlist.removeItem(0);\n          //     const translateOrigin = svgroot.createSVGTransform(),\n          //       scale = svgroot.createSVGTransform(),\n          //       translateBack = svgroot.createSVGTransform();\n          //     translateOrigin.setTranslate(0, 0);\n          //     scale.setScale(m.a, m.d);\n          //     translateBack.setTranslate(0, 0);\n          //     childTlist.appendItem(translateBack);\n          //     childTlist.appendItem(scale);\n          //     childTlist.appendItem(translateOrigin);\n          //   }\n          // }\n\n          const angle = getRotationAngle(child);\n          oldStartTransform = context_.getStartTransform();\n          const childxforms = [];\n          context_.setStartTransform(child.getAttribute('transform'));\n          if (angle || hasMatrixTransform(childTlist)) {\n            const e2t = svgroot.createSVGTransform();\n            e2t.setMatrix(matrixMultiply(tm, sm, tmn, m));\n            childTlist.clear();\n            childTlist.appendItem(e2t);\n            childxforms.push(e2t);\n          // if not rotated or skewed, push the [T][S][-T] down to the child\n          } else {\n            // update the transform list with translate,scale,translate\n\n            // slide the [T][S][-T] from the front to the back\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n\n            // (only bringing [-T] to the right of [M])\n            // [T][S][-T][M] = [T][S][M][-T2]\n            // [-T2] = [M_inv][-T][M]\n            const t2n = matrixMultiply(m.inverse(), tmn, m);\n            // [T2] is always negative translation of [-T2]\n            const t2 = svgroot.createSVGMatrix();\n            t2.e = -t2n.e;\n            t2.f = -t2n.f;\n\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n            // [S2] = [T2_inv][M_inv][T][S][-T][M][-T2_inv]\n            const s2 = matrixMultiply(t2.inverse(), m.inverse(), tm, sm, tmn, m, t2n.inverse());\n\n            const translateOrigin = svgroot.createSVGTransform(),\n              scale = svgroot.createSVGTransform(),\n              translateBack = svgroot.createSVGTransform();\n            translateOrigin.setTranslate(t2n.e, t2n.f);\n            scale.setScale(s2.a, s2.d);\n            translateBack.setTranslate(t2.e, t2.f);\n            childTlist.appendItem(translateBack);\n            childTlist.appendItem(scale);\n            childTlist.appendItem(translateOrigin);\n            childxforms.push(translateBack);\n            childxforms.push(scale);\n            childxforms.push(translateOrigin);\n            // logMatrix(translateBack.matrix);\n            // logMatrix(scale.matrix);\n          } // not rotated\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          // TODO: If any <use> have this group as a parent and are\n          // referencing this child, then we need to impose a reverse\n          // scale on it so that when it won't get double-translated\n          // const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n          // const href = '#' + child.id;\n          // let u = uses.length;\n          // while (u--) {\n          //   const useElem = uses.item(u);\n          //   if (href == getHref(useElem)) {\n          //     const usexlate = svgroot.createSVGTransform();\n          //     usexlate.setTranslate(-tx,-ty);\n          //     getTransformList(useElem).insertItemBefore(usexlate,0);\n          //     batchCmd.addSubCommand( recalculateDimensions(useElem) );\n          //   }\n          // }\n          context_.setStartTransform(oldStartTransform);\n        } // element\n      } // for each child\n      // Remove these transforms from group\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    } else if (N >= 3 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      const m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n    // next, check if the first transform was a translate\n    // if we had [ T1 ] [ M ] we want to transform this into [ M ] [ T2 ]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ]\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const T_M = transformListToTransform(tlist).matrix;\n      tlist.removeItem(0);\n      const mInv = transformListToTransform(tlist).matrix.inverse();\n      const M2 = matrixMultiply(mInv, T_M);\n\n      tx = M2.e;\n      ty = M2.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n\n        const clipPathsDone = [];\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            // Check if child has clip-path\n            if (child.getAttribute('clip-path')) {\n              // tx, ty\n              const attr = child.getAttribute('clip-path');\n              if (!clipPathsDone.includes(attr)) {\n                updateClipPath(attr, tx, ty);\n                clipPathsDone.push(attr);\n              }\n            }\n\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n\n            const childTlist = getTransformList(child);\n            // some children might not have a transform (<metadata>, <defs>, etc)\n            if (childTlist) {\n              const newxlate = svgroot.createSVGTransform();\n              newxlate.setTranslate(tx, ty);\n              if (childTlist.numberOfItems) {\n                childTlist.insertItemBefore(newxlate, 0);\n              } else {\n                childTlist.appendItem(newxlate);\n              }\n              batchCmd.addSubCommand(recalculateDimensions(child));\n              // If any <use> have this group as a parent and are\n              // referencing this child, then impose a reverse translate on it\n              // so that when it won't get double-translated\n              const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n              const href = '#' + child.id;\n              let u = uses.length;\n              while (u--) {\n                const useElem = uses.item(u);\n                if (href === getHref(useElem)) {\n                  const usexlate = svgroot.createSVGTransform();\n                  usexlate.setTranslate(-tx, -ty);\n                  getTransformList(useElem).insertItemBefore(usexlate, 0);\n                  batchCmd.addSubCommand(recalculateDimensions(useElem));\n                }\n              }\n              context_.setStartTransform(oldStartTransform);\n            }\n          }\n        }\n        context_.setStartTransform(oldStartTransform);\n      }\n    // else, a matrix imposition from a parent group\n    // keep pushing it down to the children\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !gangle) {\n      operation = 1;\n      const m = tlist.getItem(0).matrix,\n        children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        if (child.nodeType === 1) {\n          oldStartTransform = context_.getStartTransform();\n          context_.setStartTransform(child.getAttribute('transform'));\n          const childTlist = getTransformList(child);\n\n          if (!childTlist) { continue; }\n\n          const em = matrixMultiply(m, transformListToTransform(childTlist).matrix);\n          const e2m = svgroot.createSVGTransform();\n          e2m.setMatrix(em);\n          childTlist.clear();\n          childTlist.appendItem(e2m, 0);\n\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          context_.setStartTransform(oldStartTransform);\n\n          // Convert stroke\n          // TODO: Find out if this should actually happen somewhere else\n          const sw = child.getAttribute('stroke-width');\n          if (child.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n            const avg = (Math.abs(em.a) + Math.abs(em.d)) / 2;\n            child.setAttribute('stroke-width', sw * avg);\n          }\n        }\n      }\n      tlist.clear();\n    // else it was just a rotate\n    } else {\n      if (gangle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (gangle) {\n        newcenter = {\n          x: oldcenter.x + firstM.e,\n          y: oldcenter.y + firstM.f\n        };\n\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n    // if it was a resize\n    } else if (operation === 3) {\n      const m = transformListToTransform(tlist).matrix;\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(gangle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(gangle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse(),\n        mInv = m.inverse(),\n        extrat = matrixMultiply(mInv, rnewInv, rold, m);\n\n      tx = extrat.e;\n      ty = extrat.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // now push this transform down to the children\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n            const childTlist = getTransformList(child);\n            const newxlate = svgroot.createSVGTransform();\n            newxlate.setTranslate(tx, ty);\n            if (childTlist.numberOfItems) {\n              childTlist.insertItemBefore(newxlate, 0);\n            } else {\n              childTlist.appendItem(newxlate);\n            }\n\n            batchCmd.addSubCommand(recalculateDimensions(child));\n            context_.setStartTransform(oldStartTransform);\n          }\n        }\n      }\n\n      if (gangle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  // else, it's a non-group\n  } else {\n    // FIXME: box might be null for some elements (<metadata> etc), need to handle this\n    const box = getBBox(selected);\n\n    // Paths (and possbly other shapes) will have no BBox while still in <defs>,\n    // but we still may need to recalculate them (see issue 595).\n    // TODO: Figure out how to get BBox from these elements in case they\n    // have a rotation transform\n\n    if (!box && selected.tagName !== 'path') return null;\n\n    let m; // = svgroot.createSVGMatrix();\n    // temporarily strip off the rotate and save the old center\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n      newcenter = transformPoint(\n        box.x + box.width / 2,\n        box.y + box.height / 2,\n        transformListToTransform(tlist).matrix\n      );\n\n      const a = angle * Math.PI / 180;\n      const s = (Math.abs(a) > (1.0e-10))\n        ? Math.sin(a) / (1 - Math.cos(a))\n        // FIXME: This blows up if the angle is exactly 0!\n        : 2 / a;\n\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n\n    // 2 = translate, 3 = scale, 4 = rotate, 1 = matrix imposition\n    let operation = 0;\n    const N = tlist.numberOfItems;\n\n    // Check if it has a gradient with userSpaceOnUse, in which case\n    // adjust it by recalculating the matrix transform.\n    // TODO: Make this work in Webkit using transformlist.SVGTransformList\n    if (!isWebkit()) {\n      const fill = selected.getAttribute('fill');\n      if (fill && fill.startsWith('url(')) {\n        const paint = getRefElem(fill);\n        let type = 'pattern';\n        if (paint.tagName !== type) type = 'gradient';\n        const attrVal = paint.getAttribute(type + 'Units');\n        if (attrVal === 'userSpaceOnUse') {\n          // Update the userSpaceOnUse element\n          m = transformListToTransform(tlist).matrix;\n          const gtlist = getTransformList(paint);\n          const gmatrix = transformListToTransform(gtlist).matrix;\n          m = matrixMultiply(m, gmatrix);\n          const mStr = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n          paint.setAttribute(type + 'Transform', mStr);\n        }\n      }\n    }\n\n    // first, if it was a scale of a non-skewed element, then the second-last\n    // transform will be the [S]\n    // if we had [M][T][S][T] we want to extract the matrix equivalent of\n    // [T][S][T] and push it down to the element\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      // Removed this so a <use> with a given [T][S][T] would convert to a matrix.\n      // Is that bad?\n      //  && selected.nodeName != 'use'\n      operation = 3; // scale\n      m = transformListToTransform(tlist, N - 3, N - 1).matrix;\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    // if we had [T][S][-T][M], then this was a skewed element being resized\n    // Thus, we simply combine it all into one matrix\n    } else if (N === 4 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n      // reset the matrix so that the element is not re-mapped\n      m = svgroot.createSVGMatrix();\n    // if we had [R][T][S][-T][M], then this was a rotated matrix-element\n    // if we had [T1][M] we want to transform this into [M][T2]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ] and we can push [T2]\n    // down to the element\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const oldxlate = tlist.getItem(0).matrix,\n        meq = transformListToTransform(tlist, 1).matrix,\n        meqInv = meq.inverse();\n      m = matrixMultiply(meqInv, oldxlate, meq);\n      tlist.removeItem(0);\n    // else if this child now has a matrix imposition (from a parent group)\n    // we might be able to simplify\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !angle) {\n      // Remap all point-based elements\n      m = transformListToTransform(tlist).matrix;\n      switch (selected.tagName) {\n      case 'line':\n        changes = $(selected).attr(['x1', 'y1', 'x2', 'y2']);\n        // Fallthrough\n      case 'polyline':\n      case 'polygon':\n        changes.points = selected.getAttribute('points');\n        if (changes.points) {\n          const list = selected.points;\n          const len = list.numberOfItems;\n          changes.points = new Array(len);\n          for (let i = 0; i < len; ++i) {\n            const pt = list.getItem(i);\n            changes.points[i] = {x: pt.x, y: pt.y};\n          }\n        }\n        // Fallthrough\n      case 'path':\n        changes.d = selected.getAttribute('d');\n        operation = 1;\n        tlist.clear();\n        break;\n      default:\n        break;\n      }\n    // if it was a rotation, put the rotate back and return without a command\n    // (this function has zero work to do for a rotate())\n    } else {\n      // operation = 4; // rotation\n      if (angle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate or resize, we need to remap the element and absorb the xform\n    if (operation === 1 || operation === 2 || operation === 3) {\n      remapElement(selected, changes, m);\n    } // if we are remapping\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (angle) {\n        if (!hasMatrixTransform(tlist)) {\n          newcenter = {\n            x: oldcenter.x + m.e,\n            y: oldcenter.y + m.f\n          };\n        }\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      // We have special processing for tspans:  Tspans are not transformable\n      // but they can have x,y coordinates (sigh).  Thus, if this was a translate,\n      // on a text element, also translate any tspan children.\n      if (selected.tagName === 'text') {\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.tagName === 'tspan') {\n            const tspanChanges = {\n              x: $(child).attr('x') || 0,\n              y: $(child).attr('y') || 0\n            };\n            remapElement(child, tspanChanges, m);\n          }\n        }\n      }\n    // [Rold][M][T][S][-T] became [Rold][M]\n    // we want it to be [Rnew][M][Tr] where Tr is the\n    // translation required to re-center it\n    // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]\n    } else if (operation === 3 && angle) {\n      const m = transformListToTransform(tlist).matrix;\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(angle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(angle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse();\n      const mInv = m.inverse();\n      const extrat = matrixMultiply(mInv, rnewInv, rold, m);\n\n      remapElement(selected, changes, extrat);\n      if (angle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  } // a non-group\n\n  // if the transform list has been emptied, remove it\n  if (tlist.numberOfItems === 0) {\n    selected.removeAttribute('transform');\n  }\n\n  batchCmd.addSubCommand(new ChangeElementCommand(selected, initial));\n\n  return batchCmd;\n};\n","/* globals jQuery */\n/**\n * DOM element selection box tools\n * @module select\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {isTouch, isWebkit} from './browser.js'; // , isOpera\nimport {getRotationAngle, getBBox, getStrokedBBox} from './utilities.js';\nimport {transformListToTransform, transformBox, transformPoint} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\nlet svgFactory_;\nlet config_;\nlet selectorManager_; // A Singleton\nconst gripRadius = isTouch() ? 10 : 4;\n\n/**\n* Private class for DOM element selection boxes.\n*/\nexport class Selector {\n  /**\n  * @param {Integer} id - Internally identify the selector\n  * @param {Element} elem - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for initialization (prevents duplicate `getBBox` call).\n  */\n  constructor (id, elem, bbox) {\n    // this is the selector's unique number\n    this.id = id;\n\n    // this holds a reference to the element for which this selector is being used\n    this.selectedElement = elem;\n\n    // this is a flag used internally to track whether the selector is being used or not\n    this.locked = true;\n\n    // this holds a reference to the <g> element that holds all visual elements of the selector\n    this.selectorGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: ('selectorGroup' + this.id)}\n    });\n\n    // this holds a reference to the path rect\n    this.selectorRect = this.selectorGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'path',\n        attr: {\n          id: ('selectedBox' + this.id),\n          fill: 'none',\n          stroke: '#22C',\n          'stroke-width': '1',\n          'stroke-dasharray': '5,5',\n          // need to specify this so that the rect is not selectable\n          style: 'pointer-events:none'\n        }\n      })\n    );\n\n    // this holds a reference to the grip coordinates for this selector\n    this.gripCoords = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.reset(this.selectedElement, bbox);\n  }\n\n  /**\n  * Used to reset the id and element that the selector is attached to.\n  * @param {Element} e - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} bbox - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  reset (e, bbox) {\n    this.locked = true;\n    this.selectedElement = e;\n    this.resize(bbox);\n    this.selectorGroup.setAttribute('display', 'inline');\n  }\n\n  /**\n  * Updates cursors for corner grips on rotation so arrows point the right way.\n  * @param {Float} angle - Current rotation angle in degrees\n  * @returns {undefined}\n  */\n  updateGripCursors (angle) {\n    let dir;\n    const dirArr = [];\n    let steps = Math.round(angle / 45);\n    if (steps < 0) { steps += 8; }\n    for (dir in selectorManager_.selectorGrips) {\n      dirArr.push(dir);\n    }\n    while (steps > 0) {\n      dirArr.push(dirArr.shift());\n      steps--;\n    }\n    let i = 0;\n    for (dir in selectorManager_.selectorGrips) {\n      selectorManager_.selectorGrips[dir].setAttribute('style', ('cursor:' + dirArr[i] + '-resize'));\n      i++;\n    }\n  }\n\n  /**\n  * Show the resize grips of this selector.\n  * @param {boolean} show - Indicates whether grips should be shown or not\n  * @returns {undefined}\n  */\n  showGrips (show) {\n    const bShow = show ? 'inline' : 'none';\n    selectorManager_.selectorGripsGroup.setAttribute('display', bShow);\n    const elem = this.selectedElement;\n    this.hasGrips = show;\n    if (elem && show) {\n      this.selectorGroup.append(selectorManager_.selectorGripsGroup);\n      this.updateGripCursors(getRotationAngle(elem));\n    }\n  }\n\n  /**\n  * Updates the selector to match the element's size.\n  * @param {module:utilities.BBoxObject} [bbox] - BBox to use for resize (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  resize (bbox) {\n    const selectedBox = this.selectorRect,\n      mgr = selectorManager_,\n      selectedGrips = mgr.selectorGrips,\n      selected = this.selectedElement,\n      sw = selected.getAttribute('stroke-width'),\n      currentZoom = svgFactory_.getCurrentZoom();\n    let offset = 1 / currentZoom;\n    if (selected.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n      offset += (sw / 2);\n    }\n\n    const {tagName} = selected;\n    if (tagName === 'text') {\n      offset += 2 / currentZoom;\n    }\n\n    // loop and transform our bounding box until we reach our first rotation\n    const tlist = getTransformList(selected);\n    const m = transformListToTransform(tlist).matrix;\n\n    // This should probably be handled somewhere else, but for now\n    // it keeps the selection box correctly positioned when zoomed\n    m.e *= currentZoom;\n    m.f *= currentZoom;\n\n    if (!bbox) {\n      bbox = getBBox(selected);\n    }\n    // TODO: getBBox (previous line) already knows to call getStrokedBBox when tagName === 'g'. Remove this?\n    // TODO: getBBox doesn't exclude 'gsvg' and calls getStrokedBBox for any 'g'. Should getBBox be updated?\n    if (tagName === 'g' && !$.data(selected, 'gsvg')) {\n      // The bbox for a group does not include stroke vals, so we\n      // get the bbox based on its children.\n      const strokedBbox = getStrokedBBox([selected.childNodes]);\n      if (strokedBbox) {\n        bbox = strokedBbox;\n      }\n    }\n\n    // apply the transforms\n    const l = bbox.x, t = bbox.y, w = bbox.width, h = bbox.height;\n    // bbox = {x: l, y: t, width: w, height: h}; // Not in use\n\n    // we need to handle temporary transforms too\n    // if skewed, get its transformed box, then find its axis-aligned bbox\n\n    // *\n    offset *= currentZoom;\n\n    const nbox = transformBox(l * currentZoom, t * currentZoom, w * currentZoom, h * currentZoom, m),\n      {aabox} = nbox;\n    let nbax = aabox.x - offset,\n      nbay = aabox.y - offset,\n      nbaw = aabox.width + (offset * 2),\n      nbah = aabox.height + (offset * 2);\n\n    // now if the shape is rotated, un-rotate it\n    const cx = nbax + nbaw / 2,\n      cy = nbay + nbah / 2;\n\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      const rot = svgFactory_.svgRoot().createSVGTransform();\n      rot.setRotate(-angle, cx, cy);\n      const rotm = rot.matrix;\n      nbox.tl = transformPoint(nbox.tl.x, nbox.tl.y, rotm);\n      nbox.tr = transformPoint(nbox.tr.x, nbox.tr.y, rotm);\n      nbox.bl = transformPoint(nbox.bl.x, nbox.bl.y, rotm);\n      nbox.br = transformPoint(nbox.br.x, nbox.br.y, rotm);\n\n      // calculate the axis-aligned bbox\n      const {tl} = nbox;\n      let minx = tl.x,\n        miny = tl.y,\n        maxx = tl.x,\n        maxy = tl.y;\n\n      const {min, max} = Math;\n\n      minx = min(minx, min(nbox.tr.x, min(nbox.bl.x, nbox.br.x))) - offset;\n      miny = min(miny, min(nbox.tr.y, min(nbox.bl.y, nbox.br.y))) - offset;\n      maxx = max(maxx, max(nbox.tr.x, max(nbox.bl.x, nbox.br.x))) + offset;\n      maxy = max(maxy, max(nbox.tr.y, max(nbox.bl.y, nbox.br.y))) + offset;\n\n      nbax = minx;\n      nbay = miny;\n      nbaw = (maxx - minx);\n      nbah = (maxy - miny);\n    }\n\n    const dstr = 'M' + nbax + ',' + nbay +\n      ' L' + (nbax + nbaw) + ',' + nbay +\n      ' ' + (nbax + nbaw) + ',' + (nbay + nbah) +\n      ' ' + nbax + ',' + (nbay + nbah) + 'z';\n    selectedBox.setAttribute('d', dstr);\n\n    const xform = angle ? 'rotate(' + [angle, cx, cy].join(',') + ')' : '';\n    this.selectorGroup.setAttribute('transform', xform);\n\n    // TODO(codedread): Is this needed?\n    //  if (selected === selectedElements[0]) {\n    this.gripCoords = {\n      nw: [nbax, nbay],\n      ne: [nbax + nbaw, nbay],\n      sw: [nbax, nbay + nbah],\n      se: [nbax + nbaw, nbay + nbah],\n      n: [nbax + (nbaw) / 2, nbay],\n      w: [nbax, nbay + (nbah) / 2],\n      e: [nbax + nbaw, nbay + (nbah) / 2],\n      s: [nbax + (nbaw) / 2, nbay + nbah]\n    };\n    for (const dir in this.gripCoords) {\n      const coords = this.gripCoords[dir];\n      selectedGrips[dir].setAttribute('cx', coords[0]);\n      selectedGrips[dir].setAttribute('cy', coords[1]);\n    }\n\n    // we want to go 20 pixels in the negative transformed y direction, ignoring scale\n    mgr.rotateGripConnector.setAttribute('x1', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y1', nbay);\n    mgr.rotateGripConnector.setAttribute('x2', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y2', nbay - (gripRadius * 5));\n\n    mgr.rotateGrip.setAttribute('cx', nbax + (nbaw) / 2);\n    mgr.rotateGrip.setAttribute('cy', nbay - (gripRadius * 5));\n    // }\n  }\n}\n\n/**\n* Manage all selector objects (selection boxes).\n*/\nexport class SelectorManager {\n  constructor () {\n    // this will hold the <g> element that contains all selector rects/grips\n    this.selectorParentGroup = null;\n\n    // this is a special rect that is used for multi-select\n    this.rubberBandBox = null;\n\n    // this will hold objects of type Selector (see above)\n    this.selectors = [];\n\n    // this holds a map of SVG elements to their Selector object\n    this.selectorMap = {};\n\n    // this holds a reference to the grip elements\n    this.selectorGrips = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.selectorGripsGroup = null;\n    this.rotateGripConnector = null;\n    this.rotateGrip = null;\n\n    this.initGroup();\n  }\n\n  /**\n  * Resets the parent selector group element.\n  * @returns {undefined}\n  */\n  initGroup () {\n    // remove old selector parent group if it existed\n    if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {\n      this.selectorParentGroup.remove();\n    }\n\n    // create parent selector group and add it to svgroot\n    this.selectorParentGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: 'selectorParentGroup'}\n    });\n    this.selectorGripsGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {display: 'none'}\n    });\n    this.selectorParentGroup.append(this.selectorGripsGroup);\n    svgFactory_.svgRoot().append(this.selectorParentGroup);\n\n    this.selectorMap = {};\n    this.selectors = [];\n    this.rubberBandBox = null;\n\n    // add the corner grips\n    for (const dir in this.selectorGrips) {\n      const grip = svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: ('selectorGrip_resize_' + dir),\n          fill: '#22C',\n          r: gripRadius,\n          style: ('cursor:' + dir + '-resize'),\n          // This expands the mouse-able area of the grips making them\n          // easier to grab with the mouse.\n          // This works in Opera and WebKit, but does not work in Firefox\n          // see https://bugzilla.mozilla.org/show_bug.cgi?id=500174\n          'stroke-width': 2,\n          'pointer-events': 'all'\n        }\n      });\n\n      $.data(grip, 'dir', dir);\n      $.data(grip, 'type', 'resize');\n      this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);\n    }\n\n    // add rotator elems\n    this.rotateGripConnector = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'line',\n        attr: {\n          id: ('selectorGrip_rotateconnector'),\n          stroke: '#22C',\n          'stroke-width': '1'\n        }\n      })\n    );\n\n    this.rotateGrip = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: 'selectorGrip_rotate',\n          fill: 'lime',\n          r: gripRadius,\n          stroke: '#22C',\n          'stroke-width': 2,\n          style: 'cursor:url(' + config_.imgPath + 'rotate.png) 12 12, auto;'\n        }\n      })\n    );\n    $.data(this.rotateGrip, 'type', 'rotate');\n\n    if ($('#canvasBackground').length) { return; }\n\n    const [width, height] = config_.dimensions;\n    const canvasbg = svgFactory_.createSVGElement({\n      element: 'svg',\n      attr: {\n        id: 'canvasBackground',\n        width,\n        height,\n        x: 0,\n        y: 0,\n        overflow: (isWebkit() ? 'none' : 'visible'), // Chrome 7 has a problem with this when zooming out\n        style: 'pointer-events:none'\n      }\n    });\n\n    const rect = svgFactory_.createSVGElement({\n      element: 'rect',\n      attr: {\n        width: '100%',\n        height: '100%',\n        x: 0,\n        y: 0,\n        'stroke-width': 1,\n        stroke: '#000',\n        fill: '#FFF',\n        style: 'pointer-events:none'\n      }\n    });\n\n    // Both Firefox and WebKit are too slow with this filter region (especially at higher\n    // zoom levels) and Opera has at least one bug\n    // if (!isOpera()) rect.setAttribute('filter', 'url(#canvashadow)');\n    canvasbg.append(rect);\n    svgFactory_.svgRoot().insertBefore(canvasbg, svgFactory_.svgContent());\n    // Ok to replace above with `svgFactory_.svgContent().before(canvasbg);`?\n  }\n\n  /**\n  *\n  * @param {Element} elem - DOM element to get the selector for\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {Selector} The selector based on the given element\n  */\n  requestSelector (elem, bbox) {\n    if (elem == null) { return null; }\n\n    const N = this.selectors.length;\n    // If we've already acquired one for this element, return it.\n    if (typeof this.selectorMap[elem.id] === 'object') {\n      this.selectorMap[elem.id].locked = true;\n      return this.selectorMap[elem.id];\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && !this.selectors[i].locked) {\n        this.selectors[i].locked = true;\n        this.selectors[i].reset(elem, bbox);\n        this.selectorMap[elem.id] = this.selectors[i];\n        return this.selectors[i];\n      }\n    }\n    // if we reached here, no available selectors were found, we create one\n    this.selectors[N] = new Selector(N, elem, bbox);\n    this.selectorParentGroup.append(this.selectors[N].selectorGroup);\n    this.selectorMap[elem.id] = this.selectors[N];\n    return this.selectors[N];\n  }\n\n  /**\n  * Removes the selector of the given element (hides selection box).\n  *\n  * @param {Element} elem - DOM element to remove the selector for\n  * @returns {undefined}\n  */\n  releaseSelector (elem) {\n    if (elem == null) { return; }\n    const N = this.selectors.length,\n      sel = this.selectorMap[elem.id];\n    if (!sel.locked) {\n      // TODO(codedread): Ensure this exists in this module.\n      console.log('WARNING! selector was released but was already unlocked');\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && this.selectors[i] === sel) {\n        delete this.selectorMap[elem.id];\n        sel.locked = false;\n        sel.selectedElement = null;\n        sel.showGrips(false);\n\n        // remove from DOM and store reference in JS but only if it exists in the DOM\n        try {\n          sel.selectorGroup.setAttribute('display', 'none');\n        } catch (e) {}\n\n        break;\n      }\n    }\n  }\n\n  /**\n  * @returns {SVGRectElement} The rubberBandBox DOM element. This is the rectangle drawn by\n  * the user for selecting/zooming\n  */\n  getRubberBandBox () {\n    if (!this.rubberBandBox) {\n      this.rubberBandBox = this.selectorParentGroup.appendChild(\n        svgFactory_.createSVGElement({\n          element: 'rect',\n          attr: {\n            id: 'selectorRubberBand',\n            fill: '#22C',\n            'fill-opacity': 0.15,\n            stroke: '#22C',\n            'stroke-width': 0.5,\n            display: 'none',\n            style: 'pointer-events:none'\n          }\n        })\n      );\n    }\n    return this.rubberBandBox;\n  }\n}\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:select.SVGFactory\n */\n/**\n * @function module:select.SVGFactory#createSVGElement\n * @param {module:utilities.EditorContext#addSVGElementFromJson} jsonMap\n * @returns {SVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgRoot\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#getCurrentZoom\n * @returns {Float}\n */\n\n/**\n * @typedef {GenericArray} module:select.Dimensions\n * @property {Integer} length 2\n * @property {Float} 0 Width\n * @property {Float} 1 Height\n */\n/**\n * @typedef {PlainObject} module:select.Config\n * @property {string} imgPath\n * @property {module:select.Dimensions} dimensions\n */\n\n/**\n * Initializes this module.\n * @function module:select.init\n * @param {module:select.Config} config - An object containing configurable parameters (imgPath)\n * @param {module:select.SVGFactory} svgFactory - An object implementing the SVGFactory interface.\n * @returns {undefined}\n */\nexport const init = function (config, svgFactory) {\n  config_ = config;\n  svgFactory_ = svgFactory;\n  selectorManager_ = new SelectorManager();\n};\n\n/**\n * @function module:select.getSelectorManager\n * @returns {module:select.SelectorManager} The SelectorManager instance.\n */\nexport const getSelectorManager = () => selectorManager_;\n","/* globals jQuery */\n/**\n * Manipulating coordinates\n * @module coords\n * @license MIT\n */\n\nimport './svgpathseg.js';\nimport {\n  snapToGrid, assignAttributes, getBBox, getRefElem, findDefs\n} from './utilities.js';\nimport {\n  transformPoint, transformListToTransform, matrixMultiply, transformBox\n} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\n// this is how we map paths to our preferred relative segment types\nconst pathMap = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];\n\n/**\n * @interface module:coords.EditorContext\n */\n/**\n * @function module:coords.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:coords.EditorContext#getDrawing\n * @returns {module:draw.Drawing}\n*/\n/**\n * @function module:coords.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\nlet editorContext_ = null;\n\n/**\n* @function module:coords.init\n* @param {module:coords.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n};\n\n/**\n * Applies coordinate changes to an element based on the given matrix.\n * @function module:coords.remapElement\n * @implements {module:path.EditorContext#remapElement}\n*/\nexport const remapElement = function (selected, changes, m) {\n  const remap = function (x, y) { return transformPoint(x, y, m); },\n    scalew = function (w) { return m.a * w; },\n    scaleh = function (h) { return m.d * h; },\n    doSnapping = editorContext_.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',\n    finishUp = function () {\n      if (doSnapping) {\n        for (const o in changes) {\n          changes[o] = snapToGrid(changes[o]);\n        }\n      }\n      assignAttributes(selected, changes, 1000, true);\n    },\n    box = getBBox(selected);\n\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = selected.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      if (m.a < 0 || m.d < 0) {\n        const grad = getRefElem(attrVal);\n        const newgrad = grad.cloneNode(true);\n        if (m.a < 0) {\n          // flip x\n          const x1 = newgrad.getAttribute('x1');\n          const x2 = newgrad.getAttribute('x2');\n          newgrad.setAttribute('x1', -(x1 - 1));\n          newgrad.setAttribute('x2', -(x2 - 1));\n        }\n\n        if (m.d < 0) {\n          // flip y\n          const y1 = newgrad.getAttribute('y1');\n          const y2 = newgrad.getAttribute('y2');\n          newgrad.setAttribute('y1', -(y1 - 1));\n          newgrad.setAttribute('y2', -(y2 - 1));\n        }\n        newgrad.id = editorContext_.getDrawing().getNextId();\n        findDefs().append(newgrad);\n        selected.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n\n      // Not really working :(\n      // if (selected.tagName === 'path') {\n      //   reorientGrads(selected, m);\n      // }\n    }\n  }\n\n  const elName = selected.tagName;\n  if (elName === 'g' || elName === 'text' || elName === 'tspan' || elName === 'use') {\n    // if it was a translate, then just update x,y\n    if (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && (m.e !== 0 || m.f !== 0)) {\n      // [T][M] = [M][T']\n      // therefore [T'] = [M_inv][T][M]\n      const existing = transformListToTransform(selected).matrix,\n        tNew = matrixMultiply(existing.inverse(), m, existing);\n      changes.x = parseFloat(changes.x) + tNew.e;\n      changes.y = parseFloat(changes.y) + tNew.f;\n    } else {\n      // we just absorb all matrices into the element and don't do any remapping\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    }\n  }\n\n  // now we have a set of changes and an applied reduced transform list\n  // we apply the changes directly to the DOM\n  switch (elName) {\n  case 'foreignObject':\n  case 'rect':\n  case 'image': {\n    // Allow images to be inverted (give them matrix when flipped)\n    if (elName === 'image' && (m.a < 0 || m.d < 0)) {\n      // Convert to matrix\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    } else {\n      const pt1 = remap(changes.x, changes.y);\n      changes.width = scalew(changes.width);\n      changes.height = scaleh(changes.height);\n      changes.x = pt1.x + Math.min(0, changes.width);\n      changes.y = pt1.y + Math.min(0, changes.height);\n      changes.width = Math.abs(changes.width);\n      changes.height = Math.abs(changes.height);\n    }\n    finishUp();\n    break;\n  } case 'ellipse': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    changes.rx = scalew(changes.rx);\n    changes.ry = scaleh(changes.ry);\n    changes.rx = Math.abs(changes.rx);\n    changes.ry = Math.abs(changes.ry);\n    finishUp();\n    break;\n  } case 'circle': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    // take the minimum of the new selected box's dimensions for the new circle radius\n    const tbox = transformBox(box.x, box.y, box.width, box.height, m);\n    const w = tbox.tr.x - tbox.tl.x, h = tbox.bl.y - tbox.tl.y;\n    changes.r = Math.min(w / 2, h / 2);\n\n    if (changes.r) { changes.r = Math.abs(changes.r); }\n    finishUp();\n    break;\n  } case 'line': {\n    const pt1 = remap(changes.x1, changes.y1);\n    const pt2 = remap(changes.x2, changes.y2);\n    changes.x1 = pt1.x;\n    changes.y1 = pt1.y;\n    changes.x2 = pt2.x;\n    changes.y2 = pt2.y;\n  } // Fallthrough\n  case 'text':\n  case 'tspan':\n  case 'use': {\n    finishUp();\n    break;\n  } case 'g': {\n    const gsvg = $(selected).data('gsvg');\n    if (gsvg) {\n      assignAttributes(gsvg, changes, 1000, true);\n    }\n    break;\n  } case 'polyline':\n  case 'polygon': {\n    const len = changes.points.length;\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      const {x, y} = remap(pt.x, pt.y);\n      changes.points[i].x = x;\n      changes.points[i].y = y;\n    }\n\n    // const len = changes.points.length;\n    let pstr = '';\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      pstr += pt.x + ',' + pt.y + ' ';\n    }\n    selected.setAttribute('points', pstr);\n    break;\n  } case 'path': {\n    const segList = selected.pathSegList;\n    let len = segList.numberOfItems;\n    changes.d = [];\n    for (let i = 0; i < len; ++i) {\n      const seg = segList.getItem(i);\n      changes.d[i] = {\n        type: seg.pathSegType,\n        x: seg.x,\n        y: seg.y,\n        x1: seg.x1,\n        y1: seg.y1,\n        x2: seg.x2,\n        y2: seg.y2,\n        r1: seg.r1,\n        r2: seg.r2,\n        angle: seg.angle,\n        largeArcFlag: seg.largeArcFlag,\n        sweepFlag: seg.sweepFlag\n      };\n    }\n\n    len = changes.d.length;\n    const firstseg = changes.d[0],\n      currentpt = remap(firstseg.x, firstseg.y);\n    changes.d[0].x = currentpt.x;\n    changes.d[0].y = currentpt.y;\n    for (let i = 1; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      // if absolute or first segment, we want to remap x, y, x1, y1, x2, y2\n      // if relative, we want to scalew, scaleh\n      if (type % 2 === 0) { // absolute\n        const thisx = (seg.x !== undefined) ? seg.x : currentpt.x, // for V commands\n          thisy = (seg.y !== undefined) ? seg.y : currentpt.y; // for H commands\n        const pt = remap(thisx, thisy);\n        const pt1 = remap(seg.x1, seg.y1);\n        const pt2 = remap(seg.x2, seg.y2);\n        seg.x = pt.x;\n        seg.y = pt.y;\n        seg.x1 = pt1.x;\n        seg.y1 = pt1.y;\n        seg.x2 = pt2.x;\n        seg.y2 = pt2.y;\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      } else { // relative\n        seg.x = scalew(seg.x);\n        seg.y = scaleh(seg.y);\n        seg.x1 = scalew(seg.x1);\n        seg.y1 = scaleh(seg.y1);\n        seg.x2 = scalew(seg.x2);\n        seg.y2 = scaleh(seg.y2);\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      }\n    } // for each segment\n\n    let dstr = '';\n    len = changes.d.length;\n    for (let i = 0; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      dstr += pathMap[type];\n      switch (type) {\n      case 13: // relative horizontal line (h)\n      case 12: // absolute horizontal line (H)\n        dstr += seg.x + ' ';\n        break;\n      case 15: // relative vertical line (v)\n      case 14: // absolute vertical line (V)\n        dstr += seg.y + ' ';\n        break;\n      case 3: // relative move (m)\n      case 5: // relative line (l)\n      case 19: // relative smooth quad (t)\n      case 2: // absolute move (M)\n      case 4: // absolute line (L)\n      case 18: // absolute smooth quad (T)\n        dstr += seg.x + ',' + seg.y + ' ';\n        break;\n      case 7: // relative cubic (c)\n      case 6: // absolute cubic (C)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x2 + ',' + seg.y2 + ' ' +\n          seg.x + ',' + seg.y + ' ';\n        break;\n      case 9: // relative quad (q)\n      case 8: // absolute quad (Q)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 11: // relative elliptical arc (a)\n      case 10: // absolute elliptical arc (A)\n        dstr += seg.r1 + ',' + seg.r2 + ' ' + seg.angle + ' ' + (+seg.largeArcFlag) +\n          ' ' + (+seg.sweepFlag) + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 17: // relative smooth cubic (s)\n      case 16: // absolute smooth cubic (S)\n        dstr += seg.x2 + ',' + seg.y2 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      }\n    }\n\n    selected.setAttribute('d', dstr);\n    break;\n  }\n  }\n};\n","/* eslint-disable indent */\n/* globals jQuery, jsPDF */\n/**\n * Numerous tools for working with the editor's \"canvas\"\n * @module svgcanvas\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Pavol Rusnak, 2010 Jeff Schiller\n *\n */\n\n/* Dependencies:\n1. Also expects jQuery UI for `svgCanvasToString` and\n`convertToGroup` use of `:data()` selector\n*/\n\n// Todo: Obtain/adapt latest jsPDF to utilize ES Module for `jsPDF`/avoid global\n\nimport './svgpathseg.js';\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\n\nimport * as draw from './draw.js';\nimport * as pathModule from './path.js';\nimport {sanitizeSvg} from './sanitize.js';\nimport {getReverseNS, NS} from './namespaces.js';\nimport {importSetGlobal, importScript} from './external/dynamic-import-polyfill/importModule.js';\nimport {\n  text2xml, assignAttributes, cleanupElement, getElem, getUrlFromAttr,\n  findDefs, getHref, setHref, getRefElem, getRotationAngle, getPathBBox,\n  preventClickDefault, snapToGrid, walkTree, walkTreePost,\n  getBBoxOfElementAsPath, convertToPath, toXml, encode64, decode64,\n  dataURLToObjectURL, createObjectURL,\n  getVisibleElements, dropXMLInteralSubset,\n  init as utilsInit, getBBox as utilsGetBBox, getStrokedBBoxDefaultVisible\n} from './utilities.js';\nimport * as history from './history.js';\nimport {\n  transformPoint, matrixMultiply, hasMatrixTransform, transformListToTransform,\n  getMatrix, snapToAngle, isIdentity, rectsIntersect, transformBox\n} from './math.js';\nimport {\n  convertToNum, convertAttrs, convertUnit, shortFloat, getTypeMap,\n  init as unitsInit\n} from './units.js';\nimport {\n  isGecko, isChrome, isIE, isWebkit, supportsNonScalingStroke, supportsGoodTextCharPos\n} from './browser.js'; // , supportsEditableText\nimport {\n  getTransformList, resetListMap,\n  SVGTransformList as SVGEditTransformList\n} from './svgtransformlist.js';\nimport {\n  remapElement,\n  init as coordsInit\n} from './coords.js';\nimport {\n  recalculateDimensions,\n  init as recalculateInit\n} from './recalculate.js';\nimport {\n  getSelectorManager,\n  init as selectInit\n} from './select.js';\n\nconst $ = jqPluginSVG(jQuery);\nconst {\n  MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand, BatchCommand, UndoManager, HistoryEventTypes\n} = history;\n\nif (!window.console) {\n  window.console = {};\n  window.console.log = function (str) {};\n  window.console.dir = function (str) {};\n}\n\nif (window.opera) {\n  window.console.log = function (str) { window.opera.postError(str); };\n  window.console.dir = function (str) {};\n}\n\n/**\n* The main SvgCanvas class that manages all SVG-related functions.\n* @memberof module:svgcanvas\n*\n* @borrows module:coords.remapElement as #remapElement\n* @borrows module:recalculate.recalculateDimensions as #recalculateDimensions\n*\n* @borrows module:utilities.cleanupElement as #cleanupElement\n* @borrows module:utilities.getStrokedBBoxDefaultVisible as #getStrokedBBox\n* @borrows module:utilities.getVisibleElements as #getVisibleElements\n* @borrows module:utilities.findDefs as #findDefs\n* @borrows module:utilities.getUrlFromAttr as #getUrlFromAttr\n* @borrows module:utilities.getHref as #getHref\n* @borrows module:utilities.setHref as #setHref\n* @borrows module:utilities.getRotationAngle as #getRotationAngle\n* @borrows module:utilities.getBBox as #getBBox\n* @borrows module:utilities.getElem as #getElem\n* @borrows module:utilities.getRefElem as #getRefElem\n* @borrows module:utilities.assignAttributes as #assignAttributes\n*\n* @borrows module:SVGTransformList.getTransformList as #getTransformList\n* @borrows module:math.matrixMultiply as #matrixMultiply\n* @borrows module:math.hasMatrixTransform as #hasMatrixTransform\n* @borrows module:math.transformListToTransform as #transformListToTransform\n* @borrows module:units.convertToNum as #convertToNum\n* @borrows module:sanitize.sanitizeSvg as #sanitizeSvg\n* @borrows module:path.pathActions.linkControlPoints as #linkControlPoints\n*/\nclass SvgCanvas {\n  /**\n  * @param {HTMLElement} container - The container HTML element that should hold the SVG root element\n  * @param {module:SVGEditor.curConfig} config - An object that contains configuration data\n  */\n  constructor (container, config) {\n// Alias Namespace constants\n\n// Default configuration options\nconst curConfig = {\n  show_outside_canvas: true,\n  selectNew: true,\n  dimensions: [640, 480]\n};\n\n// Update config with new one if given\nif (config) {\n  $.extend(curConfig, config);\n}\n\n// Array with width/height of canvas\nconst {dimensions} = curConfig;\n\nconst canvas = this;\n\n// \"document\" element associated with the container (same as window.document using default svg-editor.js)\n// NOTE: This is not actually a SVG document, but an HTML document.\nconst svgdoc = container.ownerDocument;\n\n// This is a container for the document being edited, not the document itself.\n/**\n * @name module:svgcanvas~svgroot\n * @type {SVGSVGElement}\n */\nconst svgroot = svgdoc.importNode(\n  text2xml(\n    '<svg id=\"svgroot\" xmlns=\"' + NS.SVG + '\" xlinkns=\"' + NS.XLINK + '\" ' +\n      'width=\"' + dimensions[0] + '\" height=\"' + dimensions[1] + '\" x=\"' + dimensions[0] + '\" y=\"' + dimensions[1] + '\" overflow=\"visible\">' +\n      '<defs>' +\n        '<filter id=\"canvashadow\" filterUnits=\"objectBoundingBox\">' +\n          '<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"4\" result=\"blur\"/>' +\n          '<feOffset in=\"blur\" dx=\"5\" dy=\"5\" result=\"offsetBlur\"/>' +\n          '<feMerge>' +\n            '<feMergeNode in=\"offsetBlur\"/>' +\n            '<feMergeNode in=\"SourceGraphic\"/>' +\n          '</feMerge>' +\n        '</filter>' +\n      '</defs>' +\n    '</svg>'\n  ).documentElement,\n  true\n);\ncontainer.append(svgroot);\n\n/**\n * The actual element that represents the final output SVG element\n * @name module:svgcanvas~svgcontent\n * @type {SVGSVGElement}\n */\nlet svgcontent = svgdoc.createElementNS(NS.SVG, 'svg');\n\n/**\n* This function resets the svgcontent element while keeping it in the DOM.\n* @function module:svgcanvas.SvgCanvas#clearSvgContentElement\n* @returns {undefined}\n*/\nconst clearSvgContentElement = canvas.clearSvgContentElement = function () {\n  $(svgcontent).empty();\n\n  // TODO: Clear out all other attributes first?\n  $(svgcontent).attr({\n    id: 'svgcontent',\n    width: dimensions[0],\n    height: dimensions[1],\n    x: dimensions[0],\n    y: dimensions[1],\n    overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden',\n    xmlns: NS.SVG,\n    'xmlns:se': NS.SE,\n    'xmlns:xlink': NS.XLINK\n  }).appendTo(svgroot);\n\n  // TODO: make this string optional and set by the client\n  const comment = svgdoc.createComment(' Created with SVG-edit - https://github.com/SVG-Edit/svgedit');\n  svgcontent.append(comment);\n};\nclearSvgContentElement();\n\n// Prefix string for element IDs\nlet idprefix = 'svg_';\n\n/**\n* Changes the ID prefix to the given value.\n* @function module:svgcanvas.SvgCanvas#setIdPrefix\n* @param {string} p - String with the new prefix\n* @returns {undefined}\n*/\ncanvas.setIdPrefix = function (p) {\n  idprefix = p;\n};\n\n/**\n* Current draw.Drawing object\n* @type {module:draw.Drawing}\n* @name module:svgcanvas.SvgCanvas#current_drawing_\n*/\ncanvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n/**\n* Returns the current Drawing.\n* @function module:svgcanvas.SvgCanvas#getCurrentDrawing\n* @implements {module:draw.DrawCanvasInit#getCurrentDrawing}\n*/\nconst getCurrentDrawing = canvas.getCurrentDrawing = function () {\n  return canvas.current_drawing_;\n};\n\n/**\n* Float displaying the current zoom level (1 = 100%, .5 = 50%, etc)\n* @type {Float}\n*/\nlet currentZoom = 1;\n\n// pointer to current group (for in-group editing)\nlet currentGroup = null;\n\n// Object containing data for the currently selected styles\nconst allProperties = {\n  shape: {\n    fill: (curConfig.initFill.color === 'none' ? '' : '#') + curConfig.initFill.color,\n    fill_paint: null,\n    fill_opacity: curConfig.initFill.opacity,\n    stroke: '#' + curConfig.initStroke.color,\n    stroke_paint: null,\n    stroke_opacity: curConfig.initStroke.opacity,\n    stroke_width: curConfig.initStroke.width,\n    stroke_dasharray: 'none',\n    stroke_linejoin: 'miter',\n    stroke_linecap: 'butt',\n    opacity: curConfig.initOpacity\n  }\n};\n\nallProperties.text = $.extend(true, {}, allProperties.shape);\n$.extend(allProperties.text, {\n  fill: '#000000',\n  stroke_width: curConfig.text && curConfig.text.stroke_width,\n  font_size: curConfig.text && curConfig.text.font_size,\n  font_family: curConfig.text && curConfig.text.font_family\n});\n\n// Current shape style properties\nconst curShape = allProperties.shape;\n\n// Array with all the currently selected elements\n// default size of 1 until it needs to grow bigger\nlet selectedElements = [];\n\n/**\n* @typedef {PlainObject} module:svgcanvas.SVGAsJSON\n* @property {string} element\n* @property {PlainObject.<string, string>} attr\n* @property {module:svgcanvas.SVGAsJSON[]} children\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @param {Text|Element} data\n* @returns {module:svgcanvas.SVGAsJSON}\n*/\nconst getJsonFromSvgElement = this.getJsonFromSvgElement = function (data) {\n  // Text node\n  if (data.nodeType === 3) return data.nodeValue;\n\n  const retval = {\n    element: data.tagName,\n    // namespace: nsMap[data.namespaceURI],\n    attr: {},\n    children: []\n  };\n\n  // Iterate attributes\n  for (let i = 0, attr; (attr = data.attributes[i]); i++) {\n    retval.attr[attr.name] = attr.value;\n  }\n\n  // Iterate children\n  for (let i = 0, node; (node = data.childNodes[i]); i++) {\n    retval.children[i] = getJsonFromSvgElement(node);\n  }\n\n  return retval;\n};\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @function module:svgcanvas.SvgCanvas#addSVGElementFromJson\n* @implements {module:utilities.EditorContext#addSVGElementFromJson|module:path.EditorContext#addSVGElementFromJson}\n*/\nconst addSVGElementFromJson = this.addSVGElementFromJson = function (data) {\n  if (typeof data === 'string') return svgdoc.createTextNode(data);\n\n  let shape = getElem(data.attr.id);\n  // if shape is a path but we need to create a rect/ellipse, then remove the path\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (shape && data.element !== shape.tagName) {\n    shape.remove();\n    shape = null;\n  }\n  if (!shape) {\n    const ns = data.namespace || NS.SVG;\n    shape = svgdoc.createElementNS(ns, data.element);\n    if (currentLayer) {\n      (currentGroup || currentLayer).append(shape);\n    }\n  }\n  if (data.curStyles) {\n    assignAttributes(shape, {\n      fill: curShape.fill,\n      stroke: curShape.stroke,\n      'stroke-width': curShape.stroke_width,\n      'stroke-dasharray': curShape.stroke_dasharray,\n      'stroke-linejoin': curShape.stroke_linejoin,\n      'stroke-linecap': curShape.stroke_linecap,\n      'stroke-opacity': curShape.stroke_opacity,\n      'fill-opacity': curShape.fill_opacity,\n      opacity: curShape.opacity / 2,\n      style: 'pointer-events:inherit'\n    }, 100);\n  }\n  assignAttributes(shape, data.attr, 100);\n  cleanupElement(shape);\n\n  // Children\n  if (data.children) {\n    data.children.forEach((child) => {\n      shape.append(addSVGElementFromJson(child));\n    });\n  }\n\n  return shape;\n};\n\ncanvas.getTransformList = getTransformList;\n\ncanvas.matrixMultiply = matrixMultiply;\ncanvas.hasMatrixTransform = hasMatrixTransform;\ncanvas.transformListToTransform = transformListToTransform;\n\n/**\n* @implements {module:utilities.EditorContext#getBaseUnit}\n*/\nconst getBaseUnit = () => { return curConfig.baseUnit; };\n\n/**\n* initialize from units.js.\n* Send in an object implementing the ElementContainer interface (see units.js)\n*/\nunitsInit(\n  /**\n  * @implements {module:units.ElementContainer}\n  */\n  {\n    getBaseUnit,\n    getElement: getElem,\n    getHeight () { return svgcontent.getAttribute('height') / currentZoom; },\n    getWidth () { return svgcontent.getAttribute('width') / currentZoom; },\n    getRoundDigits () { return saveOptions.round_digits; }\n  }\n);\n\ncanvas.convertToNum = convertToNum;\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @implements {module:draw.DrawCanvasInit#getSVGContent|module:utilities.EditorContext#getSVGContent}\n*/\nconst getSVGContent = () => { return svgcontent; };\n\n/**\n* Should really be an intersection with all needing to apply rather than a union.\n* @function module:svgcanvas.SvgCanvas#getSelectedElements\n* @implements {module:utilities.EditorContext#getSelectedElements|module:draw.DrawCanvasInit#getSelectedElements|module:path.EditorContext#getSelectedElements}\n*/\nconst getSelectedElements = this.getSelectedElems = function () {\n  return selectedElements;\n};\n\nconst pathActions = pathModule.pathActions;\n\n/**\n* This should actually be an intersection as all interfaces should be met.\n* @implements {module:utilities.EditorContext#getSVGRoot|module:recalculate.EditorContext#getSVGRoot|module:coords.EditorContext#getSVGRoot|module:path.EditorContext#getSVGRoot}\n*/\nconst getSVGRoot = () => svgroot;\n\nutilsInit(\n  /**\n  * @implements {module:utilities.EditorContext}\n  */\n  {\n    pathActions, // Ok since not modifying\n    getSVGContent,\n    addSVGElementFromJson,\n    getSelectedElements,\n    getDOMDocument () { return svgdoc; },\n    getDOMContainer () { return container; },\n    getSVGRoot,\n    // TODO: replace this mostly with a way to get the current drawing.\n    getBaseUnit,\n    getSnappingStep () { return curConfig.snappingStep; }\n  }\n);\n\ncanvas.findDefs = findDefs;\ncanvas.getUrlFromAttr = getUrlFromAttr;\ncanvas.getHref = getHref;\ncanvas.setHref = setHref;\n/* const getBBox = */ canvas.getBBox = utilsGetBBox;\ncanvas.getRotationAngle = getRotationAngle;\ncanvas.getElem = getElem;\ncanvas.getRefElem = getRefElem;\ncanvas.assignAttributes = assignAttributes;\n\nthis.cleanupElement = cleanupElement;\n\n/**\n* This should actually be an intersection not a union as all should apply.\n* @implements {module:coords.EditorContext|module:path.EditorContext}\n*/\nconst getGridSnapping = () => { return curConfig.gridSnapping; };\n\ncoordsInit(\n  /**\n  * @implements {module:coords.EditorContext}\n  */\n  {\n    getDrawing () { return getCurrentDrawing(); },\n    getSVGRoot,\n    getGridSnapping\n  }\n);\nthis.remapElement = remapElement;\n\nrecalculateInit(\n  /**\n  * @implements {module:recalculate.EditorContext}\n  */\n  {\n    getSVGRoot,\n    getStartTransform () { return startTransform; },\n    setStartTransform (transform) { startTransform = transform; }\n  }\n);\nthis.recalculateDimensions = recalculateDimensions;\n\n// import from sanitize.js\nconst nsMap = getReverseNS();\ncanvas.sanitizeSvg = sanitizeSvg;\n\n/**\n* @name undoMgr\n* @memberof module:svgcanvas.SvgCanvas#\n* @type {module:history.HistoryEventHandler}\n*/\nconst undoMgr = canvas.undoMgr = new UndoManager({\n  /**\n   * @param {string} eventType One of the HistoryEvent types\n   * @param {module:history.HistoryCommand} cmd Fulfills the HistoryCommand interface\n   * @fires module:svgcanvas.SvgCanvas#event:changed\n   * @returns {undefined}\n   */\n  handleHistoryEvent (eventType, cmd) {\n    const EventTypes = HistoryEventTypes;\n    // TODO: handle setBlurOffsets.\n    if (eventType === EventTypes.BEFORE_UNAPPLY || eventType === EventTypes.BEFORE_APPLY) {\n      canvas.clearSelection();\n    } else if (eventType === EventTypes.AFTER_APPLY || eventType === EventTypes.AFTER_UNAPPLY) {\n      const elems = cmd.elements();\n      canvas.pathActions.clear();\n      call('changed', elems);\n      const cmdType = cmd.type();\n      const isApply = (eventType === EventTypes.AFTER_APPLY);\n      if (cmdType === MoveElementCommand.type()) {\n        const parent = isApply ? cmd.newParent : cmd.oldParent;\n        if (parent === svgcontent) {\n          draw.identifyLayers();\n        }\n      } else if (cmdType === InsertElementCommand.type() ||\n          cmdType === RemoveElementCommand.type()) {\n        if (cmd.parent === svgcontent) {\n          draw.identifyLayers();\n        }\n        if (cmdType === InsertElementCommand.type()) {\n          if (isApply) { restoreRefElems(cmd.elem); }\n        } else {\n          if (!isApply) { restoreRefElems(cmd.elem); }\n        }\n        if (cmd.elem.tagName === 'use') {\n          setUseData(cmd.elem);\n        }\n      } else if (cmdType === ChangeElementCommand.type()) {\n        // if we are changing layer names, re-identify all layers\n        if (cmd.elem.tagName === 'title' &&\n          cmd.elem.parentNode.parentNode === svgcontent\n        ) {\n          draw.identifyLayers();\n        }\n        const values = isApply ? cmd.newValues : cmd.oldValues;\n        // If stdDeviation was changed, update the blur.\n        if (values.stdDeviation) {\n          canvas.setBlurOffsets(cmd.elem.parentNode, values.stdDeviation);\n        }\n        // This is resolved in later versions of webkit, perhaps we should\n        // have a featured detection for correct 'use' behavior?\n        // ——————————\n        // Remove & Re-add hack for Webkit (issue 775)\n        // if (cmd.elem.tagName === 'use' && isWebkit()) {\n        //  const {elem} = cmd;\n        //  if (!elem.getAttribute('x') && !elem.getAttribute('y')) {\n        //    const parent = elem.parentNode;\n        //    const sib = elem.nextSibling;\n        //    elem.remove();\n        //    parent.insertBefore(elem, sib);\n        //    // Ok to replace above with this? `sib.before(elem);`\n        //  }\n        // }\n      }\n    }\n  }\n});\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas~addCommandToHistory\n* @implements {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory}\n*/\nconst addCommandToHistory = function (cmd) {\n  canvas.undoMgr.addCommandToHistory(cmd);\n};\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#getZoom\n* @implements {module:path.EditorContext#getCurrentZoom|module:select.SVGFactory#getCurrentZoom}\n*/\nconst getCurrentZoom = this.getZoom = function () { return currentZoom; };\n\n/**\n* This method rounds the incoming value to the nearest value based on the `currentZoom`\n* @function module:svgcanvas.SvgCanvas#round\n* @implements {module:path.EditorContext#round}\n*/\nconst round = this.round = function (val) {\n  return parseInt(val * currentZoom, 10) / currentZoom;\n};\n\nselectInit(\n  curConfig,\n  /**\n  * Export to select.js\n  * @implements {module:select.SVGFactory}\n  */\n  {\n    createSVGElement (jsonMap) { return canvas.addSVGElementFromJson(jsonMap); },\n    svgRoot () { return svgroot; },\n    svgContent () { return svgcontent; },\n    getCurrentZoom\n  }\n);\n/**\n* This object manages selectors for us\n* @name module:svgcanvas.SvgCanvas#selectorManager\n* @type {module:select.SelectorManager}\n*/\nconst selectorManager = this.selectorManager = getSelectorManager();\n\n/**\n* @function module:svgcanvas.SvgCanvas#getNextId\n* @implements {module:path.EditorContext#getNextId}\n*/\nconst getNextId = canvas.getNextId = function () {\n  return getCurrentDrawing().getNextId();\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getId\n* @implements {module:path.EditorContext#getId}\n*/\nconst getId = canvas.getId = function () {\n  return getCurrentDrawing().getId();\n};\n\n/**\n* The \"implements\" should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#call\n* @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}\n* @param {\"selected\"|\"changed\"|\"contextset\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String with the event name\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.\n* @returns {undefined}\n*/\nconst call = function (ev, arg) {\n  if (events[ev]) {\n    return events[ev](window, arg);\n  }\n};\n\n/**\n* Clears the selection. The 'selected' handler is then optionally called.\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#clearSelection\n* @implements {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst clearSelection = this.clearSelection = function (noCall) {\n  selectedElements.forEach((elem) => {\n    if (elem == null) {\n      return;\n    }\n    selectorManager.releaseSelector(elem);\n  });\n  selectedElements = [];\n\n  if (!noCall) { call('selected', selectedElements); }\n};\n\n/**\n* Adds a list of elements to the selection. The 'selected' handler is then called.\n* @function module:svgcanvas.SvgCanvas#addToSelection\n* @implements {module:path.EditorContext#addToSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst addToSelection = this.addToSelection = function (elemsToAdd, showGrips) {\n  if (!elemsToAdd.length) { return; }\n  // find the first null in our selectedElements array\n\n  let j = 0;\n  while (j < selectedElements.length) {\n    if (selectedElements[j] == null) {\n      break;\n    }\n    ++j;\n  }\n\n  // now add each element consecutively\n  let i = elemsToAdd.length;\n  while (i--) {\n    let elem = elemsToAdd[i];\n    if (!elem) { continue; }\n    const bbox = utilsGetBBox(elem);\n    if (!bbox) { continue; }\n\n    if (elem.tagName === 'a' && elem.childNodes.length === 1) {\n      // Make \"a\" element's child be the selected element\n      elem = elem.firstChild;\n    }\n\n    // if it's not already there, add it\n    if (!selectedElements.includes(elem)) {\n      selectedElements[j] = elem;\n\n      // only the first selectedBBoxes element is ever used in the codebase these days\n      // if (j === 0) selectedBBoxes[0] = utilsGetBBox(elem);\n      j++;\n      const sel = selectorManager.requestSelector(elem, bbox);\n\n      if (selectedElements.length > 1) {\n        sel.showGrips(false);\n      }\n    }\n  }\n  call('selected', selectedElements);\n\n  if (showGrips || selectedElements.length === 1) {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(true);\n  } else {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(false);\n  }\n\n  // make sure the elements are in the correct order\n  // See: https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-compareDocumentPosition\n\n  selectedElements.sort(function (a, b) {\n    if (a && b && a.compareDocumentPosition) {\n      return 3 - (b.compareDocumentPosition(a) & 6);\n    }\n    if (a == null) {\n      return 1;\n    }\n  });\n\n  // Make sure first elements are not null\n  while (selectedElements[0] == null) {\n    selectedElements.shift(0);\n  }\n};\n\n/**\n* @implements {module:path.EditorContext#getOpacity}\n*/\nconst getOpacity = function () {\n  return curShape.opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMouseTarget\n* @implements {module:path.EditorContext#getMouseTarget}\n*/\nconst getMouseTarget = this.getMouseTarget = function (evt) {\n  if (evt == null) {\n    return null;\n  }\n  let mouseTarget = evt.target;\n\n  // if it was a <use>, Opera and WebKit return the SVGElementInstance\n  if (mouseTarget.correspondingUseElement) { mouseTarget = mouseTarget.correspondingUseElement; }\n\n  // for foreign content, go up until we find the foreignObject\n  // WebKit browsers set the mouse target to the svgcanvas div\n  if ([NS.MATH, NS.HTML].includes(mouseTarget.namespaceURI) &&\n    mouseTarget.id !== 'svgcanvas'\n  ) {\n    while (mouseTarget.nodeName !== 'foreignObject') {\n      mouseTarget = mouseTarget.parentNode;\n      if (!mouseTarget) { return svgroot; }\n    }\n  }\n\n  // Get the desired mouseTarget with jQuery selector-fu\n  // If it's root-like, select the root\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if ([svgroot, container, svgcontent, currentLayer].includes(mouseTarget)) {\n    return svgroot;\n  }\n\n  const $target = $(mouseTarget);\n\n  // If it's a selection grip, return the grip parent\n  if ($target.closest('#selectorParentGroup').length) {\n    // While we could instead have just returned mouseTarget,\n    // this makes it easier to indentify as being a selector grip\n    return selectorManager.selectorParentGroup;\n  }\n\n  while (mouseTarget.parentNode !== (currentGroup || currentLayer)) {\n    mouseTarget = mouseTarget.parentNode;\n  }\n\n  //\n  // // go up until we hit a child of a layer\n  // while (mouseTarget.parentNode.parentNode.tagName == 'g') {\n  //   mouseTarget = mouseTarget.parentNode;\n  // }\n  // Webkit bubbles the mouse event all the way up to the div, so we\n  // set the mouseTarget to the svgroot like the other browsers\n  // if (mouseTarget.nodeName.toLowerCase() == 'div') {\n  //   mouseTarget = svgroot;\n  // }\n\n  return mouseTarget;\n};\n\n/**\n* @namespace {module:path.pathActions} pathActions\n* @memberof module:svgcanvas.SvgCanvas#\n* @see module:path.pathActions\n*/\ncanvas.pathActions = pathActions;\n/**\n* @implements {module:path.EditorContext#resetD}\n*/\nfunction resetD (p) {\n  p.setAttribute('d', pathActions.convertPath(p));\n}\npathModule.init(\n  /**\n  * @implements {module:path.EditorContext}\n  */\n  {\n    selectorManager, // Ok since not changing\n    canvas, // Ok since not changing\n    call,\n    resetD,\n    round,\n    clearSelection,\n    addToSelection,\n    addCommandToHistory,\n    remapElement,\n    addSVGElementFromJson,\n    getGridSnapping,\n    getOpacity,\n    getSelectedElements,\n    getContainer () {\n      return container;\n    },\n    setStarted (s) {\n      started = s;\n    },\n    getRubberBox () {\n      return rubberBox;\n    },\n    setRubberBox (rb) {\n      rubberBox = rb;\n      return rubberBox;\n    },\n    /**\n     * @param {boolean} closedSubpath\n     * @param {SVGCircleElement[]} grips\n     * @fires module:svgcanvas.SvgCanvas#event:pointsAdded\n     * @fires module:svgcanvas.SvgCanvas#event:selected\n     * @returns {undefined}\n     */\n    addPtsToSelection ({closedSubpath, grips}) {\n      // TODO: Correct this:\n      pathActions.canDeleteNodes = true;\n      pathActions.closed_subpath = closedSubpath;\n      call('pointsAdded', {closedSubpath, grips});\n      call('selected', grips);\n    },\n    /**\n     * @param {ChangeElementCommand} cmd\n     * @param {SVGPathElement} elem\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    endChanges ({cmd, elem}) {\n      addCommandToHistory(cmd);\n      call('changed', [elem]);\n    },\n    getCurrentZoom,\n    getId,\n    getNextId,\n    getMouseTarget,\n    getCurrentMode () {\n      return currentMode;\n    },\n    setCurrentMode (cm) {\n      currentMode = cm;\n      return currentMode;\n    },\n    getDrawnPath () {\n      return drawnPath;\n    },\n    setDrawnPath (dp) {\n      drawnPath = dp;\n      return drawnPath;\n    },\n    getSVGRoot\n  }\n);\n\n// Interface strings, usually for title elements\nconst uiStrings = {};\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst refAttrs = ['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'];\n\nconst elData = $.data;\n\n// Animation element to change the opacity of any newly created element\nconst opacAni = document.createElementNS(NS.SVG, 'animate');\n$(opacAni).attr({\n  attributeName: 'opacity',\n  begin: 'indefinite',\n  dur: 1,\n  fill: 'freeze'\n}).appendTo(svgroot);\n\nconst restoreRefElems = function (elem) {\n  // Look for missing reference elements, restore any found\n  const attrs = $(elem).attr(refAttrs);\n  for (const o in attrs) {\n    const val = attrs[o];\n    if (val && val.startsWith('url(')) {\n      const id = getUrlFromAttr(val).substr(1);\n      const ref = getElem(id);\n      if (!ref) {\n        findDefs().append(removedElements[id]);\n        delete removedElements[id];\n      }\n    }\n  }\n\n  const childs = elem.getElementsByTagName('*');\n\n  if (childs.length) {\n    for (let i = 0, l = childs.length; i < l; i++) {\n      restoreRefElems(childs[i]);\n    }\n  }\n};\n\n// (function () {\n// TODO For Issue 208: this is a start on a thumbnail\n//  const svgthumb = svgdoc.createElementNS(NS.SVG, 'use');\n//  svgthumb.setAttribute('width', '100');\n//  svgthumb.setAttribute('height', '100');\n//  setHref(svgthumb, '#svgcontent');\n//  svgroot.append(svgthumb);\n// }());\n\n/**\n * @typedef {PlainObject} module:svgcanvas.SaveOptions\n * @property {boolean} apply\n * @property {\"embed\"} [image]\n * @property {Integer} round_digits\n */\n\n// Object to contain image data for raster images that were found encodable\nconst encodableImages = {},\n\n  // Object with save options\n  /**\n   * @type {module:svgcanvas.SaveOptions}\n   */\n  saveOptions = {round_digits: 5},\n\n  // Object with IDs for imported files, to see if one was already added\n  importIds = {},\n\n  // Current text style properties\n  curText = allProperties.text,\n\n  // Object to contain all included extensions\n  extensions = {},\n\n  // Map of deleted reference elements\n  removedElements = {};\n\nlet\n  // String with image URL of last loadable image\n  lastGoodImgUrl = curConfig.imgPath + 'logo.png',\n\n  // Boolean indicating whether or not a draw action has been started\n  started = false,\n\n  // String with an element's initial transform attribute value\n  startTransform = null,\n\n  // String indicating the current editor mode\n  currentMode = 'select',\n\n  // String with the current direction in which an element is being resized\n  currentResizeMode = 'none',\n\n  // Current general properties\n  curProperties = curShape,\n\n  // Array with selected elements' Bounding box object\n  // selectedBBoxes = new Array(1),\n\n  // The DOM element that was just selected\n  justSelected = null,\n\n  // DOM element for selection rectangle drawn by the user\n  rubberBox = null,\n\n  // Array of current BBoxes, used in getIntersectionList().\n  curBBoxes = [],\n\n  // Canvas point for the most recent right click\n  lastClickPoint = null;\n\n/**\n* @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus\n* @tutorial ExtensionDocs\n*/\n/**\n* @callback module:svgcanvas.ExtensionVarBuilder\n* @param {string} name The name of the extension\n*/\n/**\n* @todo Consider: Should this return an array by default, so extension results aren't overwritten?\n* @todo Would be easier to document if passing in object with key of action and vars as value; could then define an interface which tied both together\n* @function module:svgcanvas.SvgCanvas#runExtensions\n* @param {\"mouseDown\"|\"mouseMove\"|\"mouseUp\"|\"zoomChanged\"|\"IDsUpdated\"|\"canvasUpdated\"|\"toolButtonStateUpdate\"|\"selectedChanged\"|\"elementTransition\"|\"elementChanged\"|\"langReady\"|\"langChanged\"|\"addLangData\"|\"onNewDocument\"|\"workareaResized\"} action\n* @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]\n* @param {boolean} [returnArray]\n* @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.\n*/\nconst runExtensions = this.runExtensions = function (action, vars, returnArray) {\n  let result = returnArray ? [] : false;\n  $.each(extensions, function (name, ext) {\n    if (ext && action in ext) {\n      if (typeof vars === 'function') {\n        vars = vars(name); // ext, action\n      }\n      if (returnArray) {\n        result.push(ext[action](vars));\n      } else {\n        result = ext[action](vars);\n      }\n    }\n  });\n  return result;\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseDownStatus\n* @property {boolean} started Indicates that creating/editing has started\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseUpStatus\n* @property {boolean} keep Indicates if the current element should be kept\n* @property {boolean} started Indicates if editing should still be considered as \"started\"\n* @property {Element} element The element being affected\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionIDsUpdatedStatus\n* @property {string[]} remove Contains string IDs (used by `ext-connector.js`)\n*/\n\n/**\n * @interface module:svgcanvas.ExtensionInitResponse\n * @property {module:SVGEditor.ContextTool[]|PlainObject.<string, module:SVGEditor.ContextTool>} [context_tools]\n * @property {module:SVGEditor.Button[]|PlainObject.<Integer, module:SVGEditor.Button>} [buttons]\n * @property {string} [svgicons] The location of a local SVG or SVGz file\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseDown\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown} arg\n * @returns {undefined|module:svgcanvas.ExtensionMouseDownStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseMove\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseMove} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseUp\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseUp} arg\n * @returns {module:svgcanvas.ExtensionMouseUpStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#zoomChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#IDsUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} arg\n * @returns {module:svgcanvas.ExtensionIDsUpdatedStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#canvasUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#toolButtonStateUpdate\n * @param {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#selectedChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementTransition\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementTransition} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langReady\n * @param {module:svgcanvas.SvgCanvas#event:ext-langReady} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-langChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#addLangData\n * @param {module:svgcanvas.SvgCanvas#event:ext-addLangData} arg\n * @returns {Promise} Resolves to {@link module:locale.ExtensionLocaleData}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#onNewDocument\n * @param {module:svgcanvas.SvgCanvas#event:ext-onNewDocument} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#workareaResized\n * @param {module:svgcanvas.SvgCanvas#event:ext-workareaResized} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#callback\n * @this module:SVGEditor\n * @param {module:svgcanvas.SvgCanvas#event:ext-callback} arg\n * @returns {undefined}\n*/\n\n/**\n* @callback module:svgcanvas.ExtensionInitCallback\n* @this module:SVGEditor\n* @param {module:svgcanvas.ExtensionArgumentObject} arg\n* @returns {Promise} Resolves to [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse} or `undefined`\n*/\n/**\n* Add an extension to the editor.\n* @function module:svgcanvas.SvgCanvas#addExtension\n* @param {string} name - String with the ID of the extension. Used internally; no need for i18n.\n* @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data\n* @param {module:SVGEditor~ImportLocale} importLocale\n* @fires module:svgcanvas.SvgCanvas#event:extension_added\n* @throws {TypeError} If `extInitFunc` is not a function\n* @returns {Promise} Resolves to `undefined`\n*/\nthis.addExtension = async function (name, extInitFunc, importLocale) {\n  if (typeof extInitFunc !== 'function') {\n    throw new TypeError('Function argument expected for `svgcanvas.addExtension`');\n  }\n  if (!(name in extensions)) {\n    // Provide private vars/funcs here. Is there a better way to do this?\n    /**\n     * @typedef {module:svgcanvas.PrivateMethods} module:svgcanvas.ExtensionArgumentObject\n     * @property {SVGSVGElement} svgroot See {@link module:svgcanvas~svgroot}\n     * @property {SVGSVGElement} svgcontent See {@link module:svgcanvas~svgcontent}\n     * @property {!(string|Integer)} nonce See {@link module:draw.Drawing#getNonce}\n     * @property {module:select.SelectorManager} selectorManager\n     * @property {module:SVGEditor~ImportLocale} importLocale\n     */\n    /**\n     * @type {module:svgcanvas.ExtensionArgumentObject}\n     * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties\n     */\n    const argObj = $.extend(canvas.getPrivateMethods(), {\n      importLocale,\n      svgroot,\n      svgcontent,\n      nonce: getCurrentDrawing().getNonce(),\n      selectorManager\n    });\n    const extObj = await extInitFunc(argObj);\n    if (extObj) {\n      extObj.name = name;\n    }\n\n    extensions[name] = extObj;\n    return call('extension_added', extObj);\n  } else {\n    console.log('Cannot add extension \"' + name + '\", an extension by that name already exists.');\n  }\n};\n\n/**\n* This method sends back an array or a NodeList full of elements that\n* intersect the multi-select rubber-band-box on the currentLayer only.\n*\n* We brute-force `getIntersectionList` for browsers that do not support it (Firefox).\n*\n* Reference:\n* Firefox does not implement `getIntersectionList()`, see {@link https://bugzilla.mozilla.org/show_bug.cgi?id=501421}.\n* @function module:svgcanvas.SvgCanvas#getIntersectionList\n* @param {SVGRect} rect\n* @returns {Element[]|NodeList} Bbox elements\n*/\nconst getIntersectionList = this.getIntersectionList = function (rect) {\n  if (rubberBox == null) { return null; }\n\n  const parent = currentGroup || getCurrentDrawing().getCurrentLayer();\n\n  let rubberBBox;\n  if (!rect) {\n    rubberBBox = rubberBox.getBBox();\n    const bb = svgcontent.createSVGRect();\n\n    for (const o in rubberBBox) {\n      bb[o] = rubberBBox[o] / currentZoom;\n    }\n    rubberBBox = bb;\n  } else {\n    rubberBBox = svgcontent.createSVGRect();\n    rubberBBox.x = rect.x;\n    rubberBBox.y = rect.y;\n    rubberBBox.width = rect.width;\n    rubberBBox.height = rect.height;\n  }\n\n  let resultList = null;\n  if (!isIE) {\n    if (typeof svgroot.getIntersectionList === 'function') {\n      // Offset the bbox of the rubber box by the offset of the svgcontent element.\n      rubberBBox.x += parseInt(svgcontent.getAttribute('x'), 10);\n      rubberBBox.y += parseInt(svgcontent.getAttribute('y'), 10);\n\n      resultList = svgroot.getIntersectionList(rubberBBox, parent);\n    }\n  }\n\n  if (resultList == null || typeof resultList.item !== 'function') {\n    resultList = [];\n\n    if (!curBBoxes.length) {\n      // Cache all bboxes\n      curBBoxes = getVisibleElementsAndBBoxes(parent);\n    }\n    let i = curBBoxes.length;\n    while (i--) {\n      if (!rubberBBox.width) { continue; }\n      if (rectsIntersect(rubberBBox, curBBoxes[i].bbox)) {\n        resultList.push(curBBoxes[i].elem);\n      }\n    }\n  }\n\n  // addToSelection expects an array, but it's ok to pass a NodeList\n  // because using square-bracket notation is allowed:\n  // https://www.w3.org/TR/DOM-Level-2-Core/ecma-script-binding.html\n  return resultList;\n};\n\nthis.getStrokedBBox = getStrokedBBoxDefaultVisible;\n\nthis.getVisibleElements = getVisibleElements;\n\n/**\n* @typedef {PlainObject} ElementAndBBox\n* @property {Element} elem - The element\n* @property {module:utilities.BBoxObject} bbox - The element's BBox as retrieved from `getStrokedBBoxDefaultVisible`\n*/\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:svgcanvas.SvgCanvas#getVisibleElementsAndBBoxes\n* @param {Element} parent - The parent DOM element to search within\n* @returns {ElementAndBBox[]} An array with objects that include:\n*/\nconst getVisibleElementsAndBBoxes = this.getVisibleElementsAndBBoxes = function (parent) {\n  if (!parent) {\n    parent = $(svgcontent).children(); // Prevent layers from being included\n  }\n  const contentElems = [];\n  $(parent).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push({elem, bbox: getStrokedBBoxDefaultVisible([elem])});\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Wrap an SVG element into a group element, mark the group as 'gsvg'.\n* @function module:svgcanvas.SvgCanvas#groupSvgElem\n* @param {Element} elem - SVG element to wrap\n* @returns {undefined}\n*/\nconst groupSvgElem = this.groupSvgElem = function (elem) {\n  const g = document.createElementNS(NS.SVG, 'g');\n  elem.replaceWith(g);\n  $(g).append(elem).data('gsvg', elem)[0].id = getNextId();\n};\n\n// Set scope for these functions\n\n// Object to contain editor event names and callback functions\nconst events = {};\n\ncanvas.call = call;\n/**\n * Array of what was changed (elements, layers)\n * @event module:svgcanvas.SvgCanvas#event:changed\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:selected\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:transition\n * @type {Element[]}\n */\n/**\n * The Element is always `SVGGElement`?\n * If not `null`, will be the set current group element\n * @event module:svgcanvas.SvgCanvas#event:contextset\n * @type {null|Element}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:pointsAdded\n * @type {PlainObject}\n * @property {boolean} closedSubpath\n * @property {SVGCircleElement[]} grips Grips elements\n */\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomed\n * @type {PlainObject}\n * @property {Float} x\n * @property {Float} y\n * @property {Float} width\n * @property {Float} height\n * @property {0.5|2} factor\n * @see module:SVGEditor.BBoxObjectWithFactor\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:updateCanvas\n * @type {PlainObject}\n * @property {false} center\n * @property {module:math.XYObject} newCtr\n */\n/**\n * @typedef {PlainObject} module:svgcanvas.ExtensionInitResponsePlusName\n * @implements {module:svgcanvas.ExtensionInitResponse}\n * @property {string} name The extension's resolved ID (whether explicit or based on file name)\n */\n/**\n * Generalized extension object response of\n * [`init()`]{@link module:svgcanvas.ExtensionInitCallback}\n * along with the name of the extension.\n * @event module:svgcanvas.SvgCanvas#event:extension_added\n * @type {module:svgcanvas.ExtensionInitResponsePlusName|undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:extensions_added\n * @type {undefined}\n*/\n/**\n * @typedef {PlainObject} module:svgcanvas.Message\n * @property {Any} data The data\n * @property {string} origin The origin\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:message\n * @type {module:svgcanvas.Message}\n */\n/**\n * SVG canvas converted to string\n * @event module:svgcanvas.SvgCanvas#event:saved\n * @type {string}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:setnonce\n * @type {!(string|Integer)}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:unsetnonce\n * @type {undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomDone\n * @type {undefined}\n*/\n/**\n * @event module:svgcanvas.SvgCanvas#event:cleared\n * @type {undefined}\n*/\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:exported\n * @type {module:svgcanvas.ImageExportedResults}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:exportedPDF\n * @type {module:svgcanvas.PDFExportedResults}\n */\n/**\n * Creating a cover-all class until {@link https://github.com/jsdoc3/jsdoc/issues/1545} may be supported.\n * `undefined` may be returned by {@link module:svgcanvas.SvgCanvas#event:extension_added} if the extension's `init` returns `undefined` It is also the type for the following events \"zoomDone\", \"unsetnonce\", \"cleared\", and \"extensions_added\".\n * @event module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}\n */\n\n/**\n* @callback module:svgcanvas.EventHandler\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg\n* @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n*/\n\n/**\n* Attaches a callback function to an event.\n* @function module:svgcanvas.SvgCanvas#bind\n* @param {\"changed\"|\"contextset\"|\"selected\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String indicating the name of the event\n* @param {module:svgcanvas.EventHandler} f - The callback function to bind to the event\n* @returns {module:svgcanvas.EventHandler} The previous event\n*/\ncanvas.bind = function (ev, f) {\n  const old = events[ev];\n  events[ev] = f;\n  return old;\n};\n\n/**\n* Runs the SVG Document through the sanitizer and then updates its paths.\n* @function module:svgcanvas.SvgCanvas#prepareSvg\n* @param {XMLDocument} newDoc - The SVG DOM document\n* @returns {undefined}\n*/\nthis.prepareSvg = function (newDoc) {\n  this.sanitizeSvg(newDoc.documentElement);\n\n  // convert paths into absolute commands\n  const paths = [...newDoc.getElementsByTagNameNS(NS.SVG, 'path')];\n  paths.forEach((path) => {\n    path.setAttribute('d', pathActions.convertPath(path));\n    pathActions.fixEnd(path);\n  });\n};\n\n/**\n* Hack for Firefox bugs where text element features aren't updated or get\n* messed up. See issue 136 and issue 137.\n* This function clones the element and re-selects it.\n* @function module:svgcanvas~ffClone\n* @todo Test for this bug on load and add it to \"support\" object instead of\n* browser sniffing\n* @param {Element} elem - The (text) DOM element to clone\n* @returns {Element} Cloned element\n*/\nconst ffClone = function (elem) {\n  if (!isGecko()) { return elem; }\n  const clone = elem.cloneNode(true);\n  elem.before(clone);\n  elem.remove();\n  selectorManager.releaseSelector(elem);\n  selectedElements[0] = clone;\n  selectorManager.requestSelector(clone).showGrips(true);\n  return clone;\n};\n\n// `this.each` is deprecated, if any extension used this it can be recreated by doing this:\n// * @example $(canvas.getRootElem()).children().each(...)\n// * @function module:svgcanvas.SvgCanvas#each\n// this.each = function (cb) {\n//  $(svgroot).children().each(cb);\n// };\n\n/**\n* Removes any old rotations if present, prepends a new rotation at the\n* transformed center.\n* @function module:svgcanvas.SvgCanvas#setRotationAngle\n* @param {string|Float} val - The new rotation angle in degrees\n* @param {boolean} preventUndo - Indicates whether the action should be undoable or not\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRotationAngle = function (val, preventUndo) {\n  // ensure val is the proper type\n  val = parseFloat(val);\n  const elem = selectedElements[0];\n  const oldTransform = elem.getAttribute('transform');\n  const bbox = utilsGetBBox(elem);\n  const cx = bbox.x + bbox.width / 2, cy = bbox.y + bbox.height / 2;\n  const tlist = getTransformList(elem);\n\n  // only remove the real rotational transform if present (i.e. at index=0)\n  if (tlist.numberOfItems > 0) {\n    const xform = tlist.getItem(0);\n    if (xform.type === 4) {\n      tlist.removeItem(0);\n    }\n  }\n  // find Rnc and insert it\n  if (val !== 0) {\n    const center = transformPoint(cx, cy, transformListToTransform(tlist).matrix);\n    const Rnc = svgroot.createSVGTransform();\n    Rnc.setRotate(val, center.x, center.y);\n    if (tlist.numberOfItems) {\n      tlist.insertItemBefore(Rnc, 0);\n    } else {\n      tlist.appendItem(Rnc);\n    }\n  } else if (tlist.numberOfItems === 0) {\n    elem.removeAttribute('transform');\n  }\n\n  if (!preventUndo) {\n    // we need to undo it, then redo it so it can be undo-able! :)\n    // TODO: figure out how to make changes to transform list undo-able cross-browser?\n    const newTransform = elem.getAttribute('transform');\n    elem.setAttribute('transform', oldTransform);\n    changeSelectedAttribute('transform', newTransform, selectedElements);\n    call('changed', selectedElements);\n  }\n  // const pointGripContainer = getElem('pathpointgrip_container');\n  // if (elem.nodeName === 'path' && pointGripContainer) {\n  //   pathActions.setPointContainerTransform(elem.getAttribute('transform'));\n  // }\n  const selector = selectorManager.requestSelector(selectedElements[0]);\n  selector.resize();\n  selector.updateGripCursors(val);\n};\n\n/**\n* Runs `recalculateDimensions` on the selected elements,\n* adding the changes to a single batch command.\n* @function module:svgcanvas.SvgCanvas#recalculateAllSelectedDimensions\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nconst recalculateAllSelectedDimensions = this.recalculateAllSelectedDimensions = function () {\n  const text = (currentResizeMode === 'none' ? 'position' : 'size');\n  const batchCmd = new BatchCommand(text);\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    // if (getRotationAngle(elem) && !hasMatrixTransform(getTransformList(elem))) { continue; }\n    const cmd = recalculateDimensions(elem);\n    if (cmd) {\n      batchCmd.addSubCommand(cmd);\n    }\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n * Debug tool to easily see the current matrix in the browser's console.\n * @function module:svgcanvas~logMatrix\n * @param {SVGMatrix} m The matrix\n * @returns {undefined}\n */\nconst logMatrix = function (m) {\n  console.log([m.a, m.b, m.c, m.d, m.e, m.f]);\n};\n\n// Root Current Transformation Matrix in user units\nlet rootSctm = null;\n\n/**\n* Group: Selection\n*/\n\n// TODO: do we need to worry about selectedBBoxes here?\n\n/**\n* Selects only the given elements, shortcut for `clearSelection(); addToSelection()`.\n* @function module:svgcanvas.SvgCanvas#selectOnly\n* @param {Element[]} elems - an array of DOM elements to be selected\n* @param {boolean} showGrips - Indicates whether the resize grips should be shown\n* @returns {undefined}\n*/\nconst selectOnly = this.selectOnly = function (elems, showGrips) {\n  clearSelection(true);\n  addToSelection(elems, showGrips);\n};\n\n// TODO: could use slice here to make this faster?\n// TODO: should the 'selected' handler\n\n/**\n* Removes elements from the selection.\n* @function module:svgcanvas.SvgCanvas#removeFromSelection\n* @param {Element[]} elemsToRemove - An array of elements to remove from selection\n* @returns {undefined}\n*/\n/* const removeFromSelection = */ this.removeFromSelection = function (elemsToRemove) {\n  if (selectedElements[0] == null) { return; }\n  if (!elemsToRemove.length) { return; }\n\n  // find every element and remove it from our array copy\n  const newSelectedItems = [],\n    len = selectedElements.length;\n  for (let i = 0; i < len; ++i) {\n    const elem = selectedElements[i];\n    if (elem) {\n      // keep the item\n      if (!elemsToRemove.includes(elem)) {\n        newSelectedItems.push(elem);\n      } else { // remove the item and its selector\n        selectorManager.releaseSelector(elem);\n      }\n    }\n  }\n  // the copy becomes the master now\n  selectedElements = newSelectedItems;\n};\n\n/**\n* Clears the selection, then adds all elements in the current layer to the selection.\n* @function module:svgcanvas.SvgCanvas#selectAllInCurrentLayer\n* @returns {undefined}\n*/\nthis.selectAllInCurrentLayer = function () {\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (currentLayer) {\n    currentMode = 'select';\n    selectOnly($(currentGroup || currentLayer).children());\n  }\n};\n\nlet drawnPath = null;\n\n// Mouse events\n(function () {\nconst freehand = {\n  minx: null,\n  miny: null,\n  maxx: null,\n  maxy: null\n};\nconst THRESHOLD_DIST = 0.8,\n  STEP_COUNT = 10;\nlet dAttr = null,\n  startX = null,\n  startY = null,\n  rStartX = null,\n  rStartY = null,\n  initBbox = {},\n  sumDistance = 0,\n  controllPoint2 = {x: 0, y: 0},\n  controllPoint1 = {x: 0, y: 0},\n  start = {x: 0, y: 0},\n  end = {x: 0, y: 0},\n  bSpline = {x: 0, y: 0},\n  nextPos = {x: 0, y: 0},\n  parameter,\n  nextParameter;\n\nconst getBsplinePoint = function (t) {\n  const spline = {x: 0, y: 0},\n    p0 = controllPoint2,\n    p1 = controllPoint1,\n    p2 = start,\n    p3 = end,\n    S = 1.0 / 6.0,\n    t2 = t * t,\n    t3 = t2 * t;\n\n  const m = [\n    [-1, 3, -3, 1],\n    [3, -6, 3, 0],\n    [-3, 0, 3, 0],\n    [1, 4, 1, 0]\n  ];\n\n  spline.x = S * (\n    (p0.x * m[0][0] + p1.x * m[0][1] + p2.x * m[0][2] + p3.x * m[0][3]) * t3 +\n      (p0.x * m[1][0] + p1.x * m[1][1] + p2.x * m[1][2] + p3.x * m[1][3]) * t2 +\n      (p0.x * m[2][0] + p1.x * m[2][1] + p2.x * m[2][2] + p3.x * m[2][3]) * t +\n      (p0.x * m[3][0] + p1.x * m[3][1] + p2.x * m[3][2] + p3.x * m[3][3])\n  );\n  spline.y = S * (\n    (p0.y * m[0][0] + p1.y * m[0][1] + p2.y * m[0][2] + p3.y * m[0][3]) * t3 +\n      (p0.y * m[1][0] + p1.y * m[1][1] + p2.y * m[1][2] + p3.y * m[1][3]) * t2 +\n      (p0.y * m[2][0] + p1.y * m[2][1] + p2.y * m[2][2] + p3.y * m[2][3]) * t +\n      (p0.y * m[3][0] + p1.y * m[3][1] + p2.y * m[3][2] + p3.y * m[3][3])\n  );\n\n  return {\n    x: spline.x,\n    y: spline.y\n  };\n};\n/**\n * Follows these conditions:\n * - When we are in a create mode, the element is added to the canvas but the\n *   action is not recorded until mousing up.\n * - When we are in select mode, select the element, remember the position\n *   and do nothing else.\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseDown\n * @returns {undefined}\n */\nconst mouseDown = function (evt) {\n  if (canvas.spaceKey || evt.button === 1) { return; }\n\n  const rightClick = evt.button === 2;\n\n  if (evt.altKey) { // duplicate when dragging\n    canvas.cloneSelectedElements(0, 0);\n  }\n\n  rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom;\n\n  evt.preventDefault();\n\n  if (rightClick) {\n    currentMode = 'select';\n    lastClickPoint = pt;\n  }\n\n  // This would seem to be unnecessary...\n  // if (!['select', 'resize'].includes(currentMode)) {\n  //   setGradient();\n  // }\n\n  let x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n  let mouseTarget = getMouseTarget(evt);\n\n  if (mouseTarget.tagName === 'a' && mouseTarget.childNodes.length === 1) {\n    mouseTarget = mouseTarget.firstChild;\n  }\n\n  // realX/y ignores grid-snap value\n  const realX = x;\n  rStartX = startX = x;\n  const realY = y;\n  rStartY = startY = y;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n    startX = snapToGrid(startX);\n    startY = snapToGrid(startY);\n  }\n\n  // if it is a selector grip, then it must be a single element selected,\n  // set the mouseTarget to that and update the mode to rotate/resize\n\n  if (mouseTarget === selectorManager.selectorParentGroup && selectedElements[0] != null) {\n    const grip = evt.target;\n    const griptype = elData(grip, 'type');\n    // rotating\n    if (griptype === 'rotate') {\n      currentMode = 'rotate';\n    // resizing\n    } else if (griptype === 'resize') {\n      currentMode = 'resize';\n      currentResizeMode = elData(grip, 'dir');\n    }\n    mouseTarget = selectedElements[0];\n  }\n\n  startTransform = mouseTarget.getAttribute('transform');\n  let i, strokeW;\n  const tlist = getTransformList(mouseTarget);\n  switch (currentMode) {\n  case 'select':\n    started = true;\n    currentResizeMode = 'none';\n    if (rightClick) { started = false; }\n\n    if (mouseTarget !== svgroot) {\n      // if this element is not yet selected, clear selection and select it\n      if (!selectedElements.includes(mouseTarget)) {\n        // only clear selection if shift is not pressed (otherwise, add\n        // element to selection)\n        if (!evt.shiftKey) {\n          // No need to do the call here as it will be done on addToSelection\n          clearSelection(true);\n        }\n        addToSelection([mouseTarget]);\n        justSelected = mouseTarget;\n        pathActions.clear();\n      }\n      // else if it's a path, go into pathedit mode in mouseup\n\n      if (!rightClick) {\n        // insert a dummy transform so if the element(s) are moved it will have\n        // a transform to use for its translate\n        for (i = 0; i < selectedElements.length; ++i) {\n          if (selectedElements[i] == null) { continue; }\n          const slist = getTransformList(selectedElements[i]);\n          if (slist.numberOfItems) {\n            slist.insertItemBefore(svgroot.createSVGTransform(), 0);\n          } else {\n            slist.appendItem(svgroot.createSVGTransform());\n          }\n        }\n      }\n    } else if (!rightClick) {\n      clearSelection();\n      currentMode = 'multiselect';\n      if (rubberBox == null) {\n        rubberBox = selectorManager.getRubberBandBox();\n      }\n      rStartX *= currentZoom;\n      rStartY *= currentZoom;\n      // console.log('p',[evt.pageX, evt.pageY]);\n      // console.log('c',[evt.clientX, evt.clientY]);\n      // console.log('o',[evt.offsetX, evt.offsetY]);\n      // console.log('s',[startX, startY]);\n\n      assignAttributes(rubberBox, {\n        x: rStartX,\n        y: rStartY,\n        width: 0,\n        height: 0,\n        display: 'inline'\n      }, 100);\n    }\n    break;\n  case 'zoom':\n    started = true;\n    if (rubberBox == null) {\n      rubberBox = selectorManager.getRubberBandBox();\n    }\n    assignAttributes(rubberBox, {\n      x: realX * currentZoom,\n      y: realX * currentZoom,\n      width: 0,\n      height: 0,\n      display: 'inline'\n    }, 100);\n    break;\n  case 'resize':\n    started = true;\n    startX = x;\n    startY = y;\n\n    // Getting the BBox from the selection box, since we know we\n    // want to orient around it\n    initBbox = utilsGetBBox($('#selectedBox0')[0]);\n    const bb = {};\n    $.each(initBbox, function (key, val) {\n      bb[key] = val / currentZoom;\n    });\n    initBbox = bb;\n\n    // append three dummy transforms to the tlist so that\n    // we can translate,scale,translate in mousemove\n    const pos = getRotationAngle(mouseTarget) ? 1 : 0;\n\n    if (hasMatrixTransform(tlist)) {\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n    } else {\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n\n      if (supportsNonScalingStroke()) {\n        // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):\n        // https://code.google.com/p/svg-edit/issues/detail?id=904\n        // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625\n        // TODO: Remove this workaround once vendor fixes the issue\n        const iswebkit = isWebkit();\n\n        let delayedStroke;\n        if (iswebkit) {\n          delayedStroke = function (ele) {\n            const _stroke = ele.getAttribute('stroke');\n            ele.removeAttribute('stroke');\n            // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker\n            if (_stroke !== null) setTimeout(function () { ele.setAttribute('stroke', _stroke); }, 0);\n          };\n        }\n        mouseTarget.style.vectorEffect = 'non-scaling-stroke';\n        if (iswebkit) { delayedStroke(mouseTarget); }\n\n        const all = mouseTarget.getElementsByTagName('*'),\n          len = all.length;\n        for (i = 0; i < len; i++) {\n          if (!all[i].style) { // mathML\n            continue;\n          }\n          all[i].style.vectorEffect = 'non-scaling-stroke';\n          if (iswebkit) { delayedStroke(all[i]); }\n        }\n      }\n    }\n    break;\n  case 'fhellipse':\n  case 'fhrect':\n  case 'fhpath':\n    start.x = realX;\n    start.y = realY;\n    started = true;\n    dAttr = realX + ',' + realY + ' ';\n    // Commented out as doing nothing now:\n    // strokeW = parseFloat(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'polyline',\n      curStyles: true,\n      attr: {\n        points: dAttr,\n        id: getNextId(),\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        'stroke-linecap': 'round',\n        style: 'pointer-events:none'\n      }\n    });\n    freehand.minx = realX;\n    freehand.maxx = realX;\n    freehand.miny = realY;\n    freehand.maxy = realY;\n    break;\n  case 'image':\n    started = true;\n    const newImage = addSVGElementFromJson({\n      element: 'image',\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:inherit'\n      }\n    });\n    setHref(newImage, lastGoodImgUrl);\n    preventClickDefault(newImage);\n    break;\n  case 'square':\n    // FIXME: once we create the rect, we lose information that this was a square\n    // (for resizing purposes this could be important)\n    // Fallthrough\n  case 'rect':\n    started = true;\n    startX = x;\n    startY = y;\n    addSVGElementFromJson({\n      element: 'rect',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'line':\n    started = true;\n    strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'line',\n      curStyles: true,\n      attr: {\n        x1: x,\n        y1: y,\n        x2: x,\n        y2: y,\n        id: getNextId(),\n        stroke: curShape.stroke,\n        'stroke-width': strokeW,\n        'stroke-dasharray': curShape.stroke_dasharray,\n        'stroke-linejoin': curShape.stroke_linejoin,\n        'stroke-linecap': curShape.stroke_linecap,\n        'stroke-opacity': curShape.stroke_opacity,\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:none'\n      }\n    });\n    break;\n  case 'circle':\n    started = true;\n    addSVGElementFromJson({\n      element: 'circle',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        r: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'ellipse':\n    started = true;\n    addSVGElementFromJson({\n      element: 'ellipse',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        rx: 0,\n        ry: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'text':\n    started = true;\n    /* const newText = */ addSVGElementFromJson({\n      element: 'text',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        id: getNextId(),\n        fill: curText.fill,\n        'stroke-width': curText.stroke_width,\n        'font-size': curText.font_size,\n        'font-family': curText.font_family,\n        'text-anchor': 'middle',\n        'xml:space': 'preserve',\n        opacity: curShape.opacity\n      }\n    });\n    // newText.textContent = 'text';\n    break;\n  case 'path':\n    // Fall through\n  case 'pathedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    pathActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'textedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    textActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'rotate':\n    started = true;\n    // we are starting an undoable change (a drag-rotation)\n    canvas.undoMgr.beginUndoableChange('transform', selectedElements);\n    break;\n  default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n   * The main (left) mouse button is held down on the canvas area\n   * @event module:svgcanvas.SvgCanvas#event:ext-mouseDown\n   * @type {PlainObject}\n   * @property {MouseEvent} event The event object\n   * @property {Float} start_x x coordinate on canvas\n   * @property {Float} start_y y coordinate on canvas\n   * @property {Element[]} selectedElements An array of the selected Elements\n  */\n  const extResult = runExtensions('mouseDown', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseDown} */ {\n    event: evt,\n    start_x: startX,\n    start_y: startY,\n    selectedElements\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r && r.started) {\n      started = true;\n    }\n  });\n};\n\n// in this function we do not record any state changes yet (but we do update\n// any elements that are still being created, moved or resized on the canvas)\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:transition\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseMove\n * @returns {undefined}\n */\nconst mouseMove = function (evt) {\n  if (!started) { return; }\n  if (evt.button === 1 || canvas.spaceKey) { return; }\n\n  let i, xya, c, cx, cy, dx, dy, len, angle, box,\n    selected = selectedElements[0];\n  const\n    pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    shape = getElem(getId());\n\n  let realX = mouseX / currentZoom;\n  let x = realX;\n  let realY = mouseY / currentZoom;\n  let y = realY;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n  }\n\n  evt.preventDefault();\n  let tlist;\n  switch (currentMode) {\n  case 'select': {\n    // we temporarily use a translate on the element(s) being dragged\n    // this transform is removed upon mousing up and the element is\n    // relocated to the new location\n    if (selectedElements[0] !== null) {\n      dx = x - startX;\n      dy = y - startY;\n\n      if (curConfig.gridSnapping) {\n        dx = snapToGrid(dx);\n        dy = snapToGrid(dy);\n      }\n\n      /*\n      // Commenting out as currently has no effect\n      if (evt.shiftKey) {\n        xya = snapToAngle(startX, startY, x, y);\n        ({x, y} = xya);\n      }\n      */\n\n      if (dx !== 0 || dy !== 0) {\n        len = selectedElements.length;\n        for (i = 0; i < len; ++i) {\n          selected = selectedElements[i];\n          if (selected == null) { break; }\n          // if (i === 0) {\n          //   const box = utilsGetBBox(selected);\n          //     selectedBBoxes[i].x = box.x + dx;\n          //     selectedBBoxes[i].y = box.y + dy;\n          // }\n\n          // update the dummy transform in our transform list\n          // to be a translate\n          const xform = svgroot.createSVGTransform();\n          tlist = getTransformList(selected);\n          // Note that if Webkit and there's no ID for this\n          // element, the dummy transform may have gotten lost.\n          // This results in unexpected behaviour\n\n          xform.setTranslate(dx, dy);\n          if (tlist.numberOfItems) {\n            tlist.replaceItem(xform, 0);\n          } else {\n            tlist.appendItem(xform);\n          }\n\n          // update our internal bbox that we're tracking while dragging\n          selectorManager.requestSelector(selected).resize();\n        }\n\n        call('transition', selectedElements);\n      }\n    }\n    break;\n  } case 'multiselect': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY)\n    }, 100);\n\n    // for each selected:\n    // - if newList contains selected, do nothing\n    // - if newList doesn't contain selected, remove it from selected\n    // - for any newList that was not in selectedElements, add it to selected\n    const elemsToRemove = selectedElements.slice(), elemsToAdd = [],\n      newList = getIntersectionList();\n\n    // For every element in the intersection, add if not present in selectedElements.\n    len = newList.length;\n    for (i = 0; i < len; ++i) {\n      const intElem = newList[i];\n      // Found an element that was not selected before, so we should add it.\n      if (!selectedElements.includes(intElem)) {\n        elemsToAdd.push(intElem);\n      }\n      // Found an element that was already selected, so we shouldn't remove it.\n      const foundInd = elemsToRemove.indexOf(intElem);\n      if (foundInd !== -1) {\n        elemsToRemove.splice(foundInd, 1);\n      }\n    }\n\n    if (elemsToRemove.length > 0) {\n      canvas.removeFromSelection(elemsToRemove);\n    }\n\n    if (elemsToAdd.length > 0) {\n      canvas.addToSelection(elemsToAdd);\n    }\n\n    break;\n  } case 'resize': {\n    // we track the resize bounding box and translate/scale the selected element\n    // while the mouse is down, when mouse goes up, we use this to recalculate\n    // the shape's coordinates\n    tlist = getTransformList(selected);\n    const hasMatrix = hasMatrixTransform(tlist);\n    box = hasMatrix ? initBbox : utilsGetBBox(selected);\n    let left = box.x,\n      top = box.y,\n      {width, height} = box;\n    dx = (x - startX);\n    dy = (y - startY);\n\n    if (curConfig.gridSnapping) {\n      dx = snapToGrid(dx);\n      dy = snapToGrid(dy);\n      height = snapToGrid(height);\n      width = snapToGrid(width);\n    }\n\n    // if rotated, adjust the dx,dy values\n    angle = getRotationAngle(selected);\n    if (angle) {\n      const r = Math.sqrt(dx * dx + dy * dy),\n        theta = Math.atan2(dy, dx) - angle * Math.PI / 180.0;\n      dx = r * Math.cos(theta);\n      dy = r * Math.sin(theta);\n    }\n\n    // if not stretching in y direction, set dy to 0\n    // if not stretching in x direction, set dx to 0\n    if (!currentResizeMode.includes('n') && !currentResizeMode.includes('s')) {\n      dy = 0;\n    }\n    if (!currentResizeMode.includes('e') && !currentResizeMode.includes('w')) {\n      dx = 0;\n    }\n\n    let // ts = null,\n      tx = 0, ty = 0,\n      sy = height ? (height + dy) / height : 1,\n      sx = width ? (width + dx) / width : 1;\n    // if we are dragging on the north side, then adjust the scale factor and ty\n    if (currentResizeMode.includes('n')) {\n      sy = height ? (height - dy) / height : 1;\n      ty = height;\n    }\n\n    // if we dragging on the east side, then adjust the scale factor and tx\n    if (currentResizeMode.includes('w')) {\n      sx = width ? (width - dx) / width : 1;\n      tx = width;\n    }\n\n    // update the transform list with translate,scale,translate\n    const translateOrigin = svgroot.createSVGTransform(),\n      scale = svgroot.createSVGTransform(),\n      translateBack = svgroot.createSVGTransform();\n\n    if (curConfig.gridSnapping) {\n      left = snapToGrid(left);\n      tx = snapToGrid(tx);\n      top = snapToGrid(top);\n      ty = snapToGrid(ty);\n    }\n\n    translateOrigin.setTranslate(-(left + tx), -(top + ty));\n    if (evt.shiftKey) {\n      if (sx === 1) {\n        sx = sy;\n      } else { sy = sx; }\n    }\n    scale.setScale(sx, sy);\n\n    translateBack.setTranslate(left + tx, top + ty);\n    if (hasMatrix) {\n      const diff = angle ? 1 : 0;\n      tlist.replaceItem(translateOrigin, 2 + diff);\n      tlist.replaceItem(scale, 1 + diff);\n      tlist.replaceItem(translateBack, Number(diff));\n    } else {\n      const N = tlist.numberOfItems;\n      tlist.replaceItem(translateBack, N - 3);\n      tlist.replaceItem(scale, N - 2);\n      tlist.replaceItem(translateOrigin, N - 1);\n    }\n\n    selectorManager.requestSelector(selected).resize();\n\n    call('transition', selectedElements);\n\n    break;\n  } case 'zoom': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX * currentZoom, realX),\n      y: Math.min(rStartY * currentZoom, realY),\n      width: Math.abs(realX - rStartX * currentZoom),\n      height: Math.abs(realY - rStartY * currentZoom)\n    }, 100);\n    break;\n  } case 'text': {\n    assignAttributes(shape, {\n      x,\n      y\n    }, 1000);\n    break;\n  } case 'line': {\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n    }\n\n    let x2 = x;\n    let y2 = y;\n\n    if (evt.shiftKey) {\n      xya = snapToAngle(startX, startY, x2, y2);\n      x2 = xya.x;\n      y2 = xya.y;\n    }\n\n    shape.setAttribute('x2', x2);\n    shape.setAttribute('y2', y2);\n    break;\n  } case 'foreignObject':\n    // fall through\n  case 'square':\n    // fall through\n  case 'rect':\n    // fall through\n  case 'image': {\n    const square = (currentMode === 'square') || evt.shiftKey;\n    let\n      w = Math.abs(x - startX),\n      h = Math.abs(y - startY);\n    let newX, newY;\n    if (square) {\n      w = h = Math.max(w, h);\n      newX = startX < x ? startX : startX - w;\n      newY = startY < y ? startY : startY - h;\n    } else {\n      newX = Math.min(startX, x);\n      newY = Math.min(startY, y);\n    }\n\n    if (curConfig.gridSnapping) {\n      w = snapToGrid(w);\n      h = snapToGrid(h);\n      newX = snapToGrid(newX);\n      newY = snapToGrid(newY);\n    }\n\n    assignAttributes(shape, {\n      width: w,\n      height: h,\n      x: newX,\n      y: newY\n    }, 1000);\n\n    break;\n  } case 'circle': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    let rad = Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy));\n    if (curConfig.gridSnapping) {\n      rad = snapToGrid(rad);\n    }\n    shape.setAttribute('r', rad);\n    break;\n  } case 'ellipse': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      cx = snapToGrid(cx);\n      y = snapToGrid(y);\n      cy = snapToGrid(cy);\n    }\n    shape.setAttribute('rx', Math.abs(x - cx));\n    const ry = Math.abs(evt.shiftKey ? (x - cx) : (y - cy));\n    shape.setAttribute('ry', ry);\n    break;\n  }\n  case 'fhellipse':\n  case 'fhrect': {\n    freehand.minx = Math.min(realX, freehand.minx);\n    freehand.maxx = Math.max(realX, freehand.maxx);\n    freehand.miny = Math.min(realY, freehand.miny);\n    freehand.maxy = Math.max(realY, freehand.maxy);\n  }\n  // Fallthrough\n  case 'fhpath': {\n    // dAttr += + realX + ',' + realY + ' ';\n    // shape.setAttribute('points', dAttr);\n    end.x = realX; end.y = realY;\n    if (controllPoint2.x && controllPoint2.y) {\n      for (i = 0; i < STEP_COUNT - 1; i++) {\n        parameter = i / STEP_COUNT;\n        nextParameter = (i + 1) / STEP_COUNT;\n        bSpline = getBsplinePoint(nextParameter);\n        nextPos = bSpline;\n        bSpline = getBsplinePoint(parameter);\n        sumDistance += Math.sqrt((nextPos.x - bSpline.x) * (nextPos.x - bSpline.x) + (nextPos.y - bSpline.y) * (nextPos.y - bSpline.y));\n        if (sumDistance > THRESHOLD_DIST) {\n          sumDistance -= THRESHOLD_DIST;\n\n          // Faster than completely re-writing the points attribute.\n          const point = svgcontent.createSVGPoint();\n          point.x = bSpline.x;\n          point.y = bSpline.y;\n          shape.points.appendItem(point);\n        }\n      }\n    }\n    controllPoint2 = {x: controllPoint1.x, y: controllPoint1.y};\n    controllPoint1 = {x: start.x, y: start.y};\n    start = {x: end.x, y: end.y};\n    break;\n  // update path stretch line coordinates\n  } case 'path': {\n  }\n  // fall through\n  case 'pathedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n      startX = snapToGrid(startX);\n      startY = snapToGrid(startY);\n    }\n    if (evt.shiftKey) {\n      const {path} = pathModule;\n      let x1, y1;\n      if (path) {\n        x1 = path.dragging ? path.dragging[0] : startX;\n        y1 = path.dragging ? path.dragging[1] : startY;\n      } else {\n        x1 = startX;\n        y1 = startY;\n      }\n      xya = snapToAngle(x1, y1, x, y);\n      ({x, y} = xya);\n    }\n\n    if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n      realX *= currentZoom;\n      realY *= currentZoom;\n      assignAttributes(rubberBox, {\n        x: Math.min(rStartX * currentZoom, realX),\n        y: Math.min(rStartY * currentZoom, realY),\n        width: Math.abs(realX - rStartX * currentZoom),\n        height: Math.abs(realY - rStartY * currentZoom)\n      }, 100);\n    }\n    pathActions.mouseMove(x, y);\n\n    break;\n  } case 'textedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n    // if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n    //   assignAttributes(rubberBox, {\n    //     x: Math.min(startX, x),\n    //     y: Math.min(startY, y),\n    //     width: Math.abs(x - startX),\n    //     height: Math.abs(y - startY)\n    //   }, 100);\n    // }\n\n    textActions.mouseMove(mouseX, mouseY);\n\n    break;\n  } case 'rotate': {\n    box = utilsGetBBox(selected);\n    cx = box.x + box.width / 2;\n    cy = box.y + box.height / 2;\n    const m = getMatrix(selected),\n      center = transformPoint(cx, cy, m);\n    cx = center.x;\n    cy = center.y;\n    angle = ((Math.atan2(cy - y, cx - x) * (180 / Math.PI)) - 90) % 360;\n    if (curConfig.gridSnapping) {\n      angle = snapToGrid(angle);\n    }\n    if (evt.shiftKey) { // restrict rotations to nice angles (WRS)\n      const snap = 45;\n      angle = Math.round(angle / snap) * snap;\n    }\n\n    canvas.setRotationAngle(angle < -180 ? (360 + angle) : angle, true);\n    call('transition', selectedElements);\n    break;\n  } default:\n    break;\n  }\n\n  /**\n  * The mouse has moved on the canvas area\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseMove\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  * @property {Element} selected Refers to the first selected element\n  */\n  runExtensions('mouseMove', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseMove} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY,\n    selected\n  });\n}; // mouseMove()\n\n// - in create mode, the element's opacity is set properly, we create an InsertElementCommand\n// and store it on the Undo stack\n// - in move/resize mode, the element's attributes which were affected by the move/resize are\n// identified, a ChangeElementCommand is created and stored on the stack for those attrs\n// this is done in when we recalculate the selected dimensions()\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:zoomed\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseUp\n * @returns {undefined}\n */\nconst mouseUp = function (evt) {\n  if (evt.button === 2) { return; }\n  const tempJustSelected = justSelected;\n  justSelected = null;\n  if (!started) { return; }\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n\n  let element = getElem(getId());\n  let keep = false;\n\n  const realX = x;\n  const realY = y;\n\n  // TODO: Make true when in multi-unit mode\n  const useUnit = false; // (curConfig.baseUnit !== 'px');\n  started = false;\n  let attrs, t;\n  switch (currentMode) {\n  // intentionally fall-through to select here\n  case 'resize':\n  case 'multiselect':\n    if (rubberBox != null) {\n      rubberBox.setAttribute('display', 'none');\n      curBBoxes = [];\n    }\n    currentMode = 'select';\n    // Fallthrough\n  case 'select':\n    if (selectedElements[0] != null) {\n      // if we only have one selected element\n      if (selectedElements[1] == null) {\n        // set our current stroke/fill properties to the element's\n        const selected = selectedElements[0];\n        switch (selected.tagName) {\n        case 'g':\n        case 'use':\n        case 'image':\n        case 'foreignObject':\n          break;\n        default:\n          curProperties.fill = selected.getAttribute('fill');\n          curProperties.fill_opacity = selected.getAttribute('fill-opacity');\n          curProperties.stroke = selected.getAttribute('stroke');\n          curProperties.stroke_opacity = selected.getAttribute('stroke-opacity');\n          curProperties.stroke_width = selected.getAttribute('stroke-width');\n          curProperties.stroke_dasharray = selected.getAttribute('stroke-dasharray');\n          curProperties.stroke_linejoin = selected.getAttribute('stroke-linejoin');\n          curProperties.stroke_linecap = selected.getAttribute('stroke-linecap');\n        }\n\n        if (selected.tagName === 'text') {\n          curText.font_size = selected.getAttribute('font-size');\n          curText.font_family = selected.getAttribute('font-family');\n        }\n        selectorManager.requestSelector(selected).showGrips(true);\n\n        // This shouldn't be necessary as it was done on mouseDown...\n        // call('selected', [selected]);\n      }\n      // always recalculate dimensions to strip off stray identity transforms\n      recalculateAllSelectedDimensions();\n      // if it was being dragged/resized\n      if (realX !== rStartX || realY !== rStartY) {\n        const len = selectedElements.length;\n        for (let i = 0; i < len; ++i) {\n          if (selectedElements[i] == null) { break; }\n          if (!selectedElements[i].firstChild) {\n            // Not needed for groups (incorrectly resizes elems), possibly not needed at all?\n            selectorManager.requestSelector(selectedElements[i]).resize();\n          }\n        }\n      // no change in position/size, so maybe we should move to pathedit\n      } else {\n        t = evt.target;\n        if (selectedElements[0].nodeName === 'path' && selectedElements[1] == null) {\n          pathActions.select(selectedElements[0]);\n        // if it was a path\n        // else, if it was selected and this is a shift-click, remove it from selection\n        } else if (evt.shiftKey) {\n          if (tempJustSelected !== t) {\n            canvas.removeFromSelection([t]);\n          }\n        }\n      } // no change in mouse position\n\n      // Remove non-scaling stroke\n      if (supportsNonScalingStroke()) {\n        const elem = selectedElements[0];\n        if (elem) {\n          elem.removeAttribute('style');\n          walkTree(elem, function (elem) {\n            elem.removeAttribute('style');\n          });\n        }\n      }\n    }\n    return;\n  case 'zoom':\n    if (rubberBox != null) {\n      rubberBox.setAttribute('display', 'none');\n    }\n    const factor = evt.shiftKey ? 0.5 : 2;\n    call('zoomed', {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY),\n      factor\n    });\n    return;\n  case 'fhpath':\n    // Check that the path contains at least 2 points; a degenerate one-point path\n    // causes problems.\n    // Webkit ignores how we set the points attribute with commas and uses space\n    // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870\n    sumDistance = 0;\n    controllPoint2 = {x: 0, y: 0};\n    controllPoint1 = {x: 0, y: 0};\n    start = {x: 0, y: 0};\n    end = {x: 0, y: 0};\n    const coords = element.getAttribute('points');\n    const commaIndex = coords.indexOf(',');\n    if (commaIndex >= 0) {\n      keep = coords.indexOf(',', commaIndex + 1) >= 0;\n    } else {\n      keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;\n    }\n    if (keep) {\n      element = pathActions.smoothPolylineIntoPath(element);\n    }\n    break;\n  case 'line':\n    attrs = $(element).attr(['x1', 'x2', 'y1', 'y2']);\n    keep = (attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2);\n    break;\n  case 'foreignObject':\n  case 'square':\n  case 'rect':\n  case 'image':\n    attrs = $(element).attr(['width', 'height']);\n    // Image should be kept regardless of size (use inherit dimensions later)\n    keep = (attrs.width || attrs.height) || currentMode === 'image';\n    break;\n  case 'circle':\n    keep = (element.getAttribute('r') !== '0');\n    break;\n  case 'ellipse':\n    attrs = $(element).attr(['rx', 'ry']);\n    keep = (attrs.rx || attrs.ry);\n    break;\n  case 'fhellipse':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'ellipse',\n        curStyles: true,\n        attr: {\n          cx: (freehand.minx + freehand.maxx) / 2,\n          cy: (freehand.miny + freehand.maxy) / 2,\n          rx: (freehand.maxx - freehand.minx) / 2,\n          ry: (freehand.maxy - freehand.miny) / 2,\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'fhrect':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'rect',\n        curStyles: true,\n        attr: {\n          x: freehand.minx,\n          y: freehand.miny,\n          width: (freehand.maxx - freehand.minx),\n          height: (freehand.maxy - freehand.miny),\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'text':\n    keep = true;\n    selectOnly([element]);\n    textActions.start(element);\n    break;\n  case 'path':\n    // set element to null here so that it is not removed nor finalized\n    element = null;\n    // continue to be set to true so that mouseMove happens\n    started = true;\n\n    const res = pathActions.mouseUp(evt, element, mouseX, mouseY);\n    ({element} = res);\n    ({keep} = res);\n    break;\n  case 'pathedit':\n    keep = true;\n    element = null;\n    pathActions.mouseUp(evt);\n    break;\n  case 'textedit':\n    keep = false;\n    element = null;\n    textActions.mouseUp(evt, mouseX, mouseY);\n    break;\n  case 'rotate':\n    keep = true;\n    element = null;\n    currentMode = 'select';\n    const batchCmd = canvas.undoMgr.finishUndoableChange();\n    if (!batchCmd.isEmpty()) {\n      addCommandToHistory(batchCmd);\n    }\n    // perform recalculation to weed out any stray identity transforms that might get stuck\n    recalculateAllSelectedDimensions();\n    call('changed', selectedElements);\n    break;\n  default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n  * The main (left) mouse button is released (anywhere)\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseUp\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  */\n  const extResult = runExtensions('mouseUp', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseUp} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r) {\n      keep = r.keep || keep;\n      ({element} = r);\n      started = r.started || started;\n    }\n  });\n\n  if (!keep && element != null) {\n    getCurrentDrawing().releaseId(getId());\n    element.remove();\n    element = null;\n\n    t = evt.target;\n\n    // if this element is in a group, go up until we reach the top-level group\n    // just below the layer groups\n    // TODO: once we implement links, we also would have to check for <a> elements\n    while (t && t.parentNode && t.parentNode.parentNode && t.parentNode.parentNode.tagName === 'g') {\n      t = t.parentNode;\n    }\n    // if we are not in the middle of creating a path, and we've clicked on some shape,\n    // then go to Select mode.\n    // WebKit returns <div> when the canvas is clicked, Firefox/Opera return <svg>\n    if ((currentMode !== 'path' || !drawnPath) &&\n      t && t.parentNode &&\n      t.parentNode.id !== 'selectorParentGroup' &&\n      t.id !== 'svgcanvas' && t.id !== 'svgroot'\n    ) {\n      // switch into \"select\" mode if we've clicked on an element\n      canvas.setMode('select');\n      selectOnly([t], true);\n    }\n  } else if (element != null) {\n    /**\n    * @name module:svgcanvas.SvgCanvas#addedNew\n    * @type {boolean}\n    */\n    canvas.addedNew = true;\n\n    if (useUnit) { convertAttrs(element); }\n\n    let aniDur = 0.2;\n    let cAni;\n    if (opacAni.beginElement && parseFloat(element.getAttribute('opacity')) !== curShape.opacity) {\n      cAni = $(opacAni).clone().attr({\n        to: curShape.opacity,\n        dur: aniDur\n      }).appendTo(element);\n      try {\n        // Fails in FF4 on foreignObject\n        cAni[0].beginElement();\n      } catch (e) {}\n    } else {\n      aniDur = 0;\n    }\n\n    // Ideally this would be done on the endEvent of the animation,\n    // but that doesn't seem to be supported in Webkit\n    setTimeout(function () {\n      if (cAni) { cAni.remove(); }\n      element.setAttribute('opacity', curShape.opacity);\n      element.setAttribute('style', 'pointer-events:inherit');\n      cleanupElement(element);\n      if (currentMode === 'path') {\n        pathActions.toEditMode(element);\n      } else if (curConfig.selectNew) {\n        selectOnly([element], true);\n      }\n      // we create the insert command that is stored on the stack\n      // undo means to call cmd.unapply(), redo means to call cmd.apply()\n      addCommandToHistory(new InsertElementCommand(element));\n\n      call('changed', [element]);\n    }, aniDur * 1000);\n  }\n\n  startTransform = null;\n};\n\nconst dblClick = function (evt) {\n  const evtTarget = evt.target;\n  const parent = evtTarget.parentNode;\n\n  // Do nothing if already in current group\n  if (parent === currentGroup) { return; }\n\n  let mouseTarget = getMouseTarget(evt);\n  const {tagName} = mouseTarget;\n\n  if (tagName === 'text' && currentMode !== 'textedit') {\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n    textActions.select(mouseTarget, pt.x, pt.y);\n  }\n\n  if ((tagName === 'g' || tagName === 'a') &&\n    getRotationAngle(mouseTarget)\n  ) {\n    // TODO: Allow method of in-group editing without having to do\n    // this (similar to editing rotated paths)\n\n    // Ungroup and regroup\n    pushGroupProperties(mouseTarget);\n    mouseTarget = selectedElements[0];\n    clearSelection(true);\n  }\n  // Reset context\n  if (currentGroup) {\n    draw.leaveContext();\n  }\n\n  if ((parent.tagName !== 'g' && parent.tagName !== 'a') ||\n    parent === getCurrentDrawing().getCurrentLayer() ||\n    mouseTarget === selectorManager.selectorParentGroup\n  ) {\n    // Escape from in-group edit\n    return;\n  }\n  draw.setContext(mouseTarget);\n};\n\n// prevent links from being followed in the canvas\nconst handleLinkInCanvas = function (e) {\n  e.preventDefault();\n  return false;\n};\n\n// Added mouseup to the container here.\n// TODO(codedread): Figure out why after the Closure compiler, the window mouseup is ignored.\n$(container).mousedown(mouseDown).mousemove(mouseMove).click(handleLinkInCanvas).dblclick(dblClick).mouseup(mouseUp);\n// $(window).mouseup(mouseUp);\n\n// TODO(rafaelcastrocouto): User preference for shift key and zoom factor\n$(container).bind(\n  'mousewheel DOMMouseScroll',\n  /**\n   * @param {Event} e\n   * @fires module:svgcanvas.SvgCanvas#event:updateCanvas\n   * @fires module:svgcanvas.SvgCanvas#event:zoomDone\n   * @returns {undefined}\n   */\n  function (e) {\n    if (!e.shiftKey) { return; }\n\n    e.preventDefault();\n    const evt = e.originalEvent;\n\n    rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n    const workarea = $('#workarea');\n    const scrbar = 15;\n    const rulerwidth = curConfig.showRulers ? 16 : 0;\n\n    // mouse relative to content area in content pixels\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n\n    // full work area width in screen pixels\n    const editorFullW = workarea.width();\n    const editorFullH = workarea.height();\n\n    // work area width minus scroll and ruler in screen pixels\n    const editorW = editorFullW - scrbar - rulerwidth;\n    const editorH = editorFullH - scrbar - rulerwidth;\n\n    // work area width in content pixels\n    const workareaViewW = editorW * rootSctm.a;\n    const workareaViewH = editorH * rootSctm.d;\n\n    // content offset from canvas in screen pixels\n    const wOffset = workarea.offset();\n    const wOffsetLeft = wOffset['left'] + rulerwidth;\n    const wOffsetTop = wOffset['top'] + rulerwidth;\n\n    const delta = (evt.wheelDelta) ? evt.wheelDelta : (evt.detail) ? -evt.detail : 0;\n    if (!delta) { return; }\n\n    let factor = Math.max(3 / 4, Math.min(4 / 3, (delta)));\n\n    let wZoom, hZoom;\n    if (factor > 1) {\n      wZoom = Math.ceil(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.ceil(editorH / workareaViewH * factor * 100) / 100;\n    } else {\n      wZoom = Math.floor(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.floor(editorH / workareaViewH * factor * 100) / 100;\n    }\n    let zoomlevel = Math.min(wZoom, hZoom);\n    zoomlevel = Math.min(10, Math.max(0.01, zoomlevel));\n    if (zoomlevel === currentZoom) {\n      return;\n    }\n    factor = zoomlevel / currentZoom;\n\n    // top left of workarea in content pixels before zoom\n    const topLeftOld = transformPoint(wOffsetLeft, wOffsetTop, rootSctm);\n\n    // top left of workarea in content pixels after zoom\n    const topLeftNew = {\n      x: pt.x - (pt.x - topLeftOld.x) / factor,\n      y: pt.y - (pt.y - topLeftOld.y) / factor\n    };\n\n    // top left of workarea in canvas pixels relative to content after zoom\n    const topLeftNewCanvas = {\n      x: topLeftNew.x * zoomlevel,\n      y: topLeftNew.y * zoomlevel\n    };\n\n    // new center in canvas pixels\n    const newCtr = {\n      x: topLeftNewCanvas.x - rulerwidth + editorFullW / 2,\n      y: topLeftNewCanvas.y - rulerwidth + editorFullH / 2\n    };\n\n    canvas.setZoom(zoomlevel);\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    call('updateCanvas', {center: false, newCtr});\n    call('zoomDone');\n  }\n);\n}());\n\n/**\n* Group: Text edit functions\n* Functions relating to editing text elements\n* @namespace {PlainObject} textActions\n* @memberof module:svgcanvas.SvgCanvas#\n*/\nconst textActions = canvas.textActions = (function () {\nlet curtext;\nlet textinput;\nlet cursor;\nlet selblock;\nlet blinker;\nlet chardata = [];\nlet textbb; // , transbb;\nlet matrix;\nlet lastX, lastY;\nlet allowDbl;\n\nfunction setCursor (index) {\n  const empty = (textinput.value === '');\n  $(textinput).focus();\n\n  if (!arguments.length) {\n    if (empty) {\n      index = 0;\n    } else {\n      if (textinput.selectionEnd !== textinput.selectionStart) { return; }\n      index = textinput.selectionEnd;\n    }\n  }\n\n  const charbb = chardata[index];\n  if (!empty) {\n    textinput.setSelectionRange(index, index);\n  }\n  cursor = getElem('text_cursor');\n  if (!cursor) {\n    cursor = document.createElementNS(NS.SVG, 'line');\n    assignAttributes(cursor, {\n      id: 'text_cursor',\n      stroke: '#333',\n      'stroke-width': 1\n    });\n    cursor = getElem('selectorParentGroup').appendChild(cursor);\n  }\n\n  if (!blinker) {\n    blinker = setInterval(function () {\n      const show = (cursor.getAttribute('display') === 'none');\n      cursor.setAttribute('display', show ? 'inline' : 'none');\n    }, 600);\n  }\n\n  const startPt = ptToScreen(charbb.x, textbb.y);\n  const endPt = ptToScreen(charbb.x, (textbb.y + textbb.height));\n\n  assignAttributes(cursor, {\n    x1: startPt.x,\n    y1: startPt.y,\n    x2: endPt.x,\n    y2: endPt.y,\n    visibility: 'visible',\n    display: 'inline'\n  });\n\n  if (selblock) { selblock.setAttribute('d', ''); }\n}\n\nfunction setSelection (start, end, skipInput) {\n  if (start === end) {\n    setCursor(end);\n    return;\n  }\n\n  if (!skipInput) {\n    textinput.setSelectionRange(start, end);\n  }\n\n  selblock = getElem('text_selectblock');\n  if (!selblock) {\n    selblock = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(selblock, {\n      id: 'text_selectblock',\n      fill: 'green',\n      opacity: 0.5,\n      style: 'pointer-events:none'\n    });\n    getElem('selectorParentGroup').append(selblock);\n  }\n\n  const startbb = chardata[start];\n  const endbb = chardata[end];\n\n  cursor.setAttribute('visibility', 'hidden');\n\n  const tl = ptToScreen(startbb.x, textbb.y),\n    tr = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y),\n    bl = ptToScreen(startbb.x, textbb.y + textbb.height),\n    br = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y + textbb.height);\n\n  const dstr = 'M' + tl.x + ',' + tl.y +\n    ' L' + tr.x + ',' + tr.y +\n    ' ' + br.x + ',' + br.y +\n    ' ' + bl.x + ',' + bl.y + 'z';\n\n  assignAttributes(selblock, {\n    d: dstr,\n    display: 'inline'\n  });\n}\n\nfunction getIndexFromPoint (mouseX, mouseY) {\n  // Position cursor here\n  const pt = svgroot.createSVGPoint();\n  pt.x = mouseX;\n  pt.y = mouseY;\n\n  // No content, so return 0\n  if (chardata.length === 1) { return 0; }\n  // Determine if cursor should be on left or right of character\n  let charpos = curtext.getCharNumAtPosition(pt);\n  if (charpos < 0) {\n    // Out of text range, look at mouse coords\n    charpos = chardata.length - 2;\n    if (mouseX <= chardata[0].x) {\n      charpos = 0;\n    }\n  } else if (charpos >= chardata.length - 2) {\n    charpos = chardata.length - 2;\n  }\n  const charbb = chardata[charpos];\n  const mid = charbb.x + (charbb.width / 2);\n  if (mouseX > mid) {\n    charpos++;\n  }\n  return charpos;\n}\n\nfunction setCursorFromPoint (mouseX, mouseY) {\n  setCursor(getIndexFromPoint(mouseX, mouseY));\n}\n\nfunction setEndSelectionFromPoint (x, y, apply) {\n  const i1 = textinput.selectionStart;\n  const i2 = getIndexFromPoint(x, y);\n\n  const start = Math.min(i1, i2);\n  const end = Math.max(i1, i2);\n  setSelection(start, end, !apply);\n}\n\nfunction screenToPt (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix.inverse());\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  return out;\n}\n\nfunction ptToScreen (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n}\n\n/*\n// Not currently in use\nfunction hideCursor () {\n  if (cursor) {\n    cursor.setAttribute('visibility', 'hidden');\n  }\n}\n*/\n\nfunction selectAll (evt) {\n  setSelection(0, curtext.textContent.length);\n  $(this).unbind(evt);\n}\n\nfunction selectWord (evt) {\n  if (!allowDbl || !curtext) { return; }\n\n  const ept = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = ept.x * currentZoom,\n    mouseY = ept.y * currentZoom;\n  const pt = screenToPt(mouseX, mouseY);\n\n  const index = getIndexFromPoint(pt.x, pt.y);\n  const str = curtext.textContent;\n  const first = str.substr(0, index).replace(/[a-z0-9]+$/i, '').length;\n  const m = str.substr(index).match(/^[a-z0-9]+/i);\n  const last = (m ? m[0].length : 0) + index;\n  setSelection(first, last);\n\n  // Set tripleclick\n  $(evt.target).click(selectAll);\n  setTimeout(function () {\n    $(evt.target).unbind('click', selectAll);\n  }, 300);\n}\n\nreturn /** @lends module:svgcanvas.SvgCanvas#textActions */ {\n  /**\n  * @param {Element} target\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  select (target, x, y) {\n    curtext = target;\n    textActions.toEditMode(x, y);\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  start (elem) {\n    curtext = elem;\n    textActions.toEditMode();\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Element} mouseTarget\n  * @param {Float} startX\n  * @param {Float} startY\n  * @returns {undefined}\n  */\n  mouseDown (evt, mouseTarget, startX, startY) {\n    const pt = screenToPt(startX, startY);\n\n    textinput.focus();\n    setCursorFromPoint(pt.x, pt.y);\n    lastX = startX;\n    lastY = startY;\n\n    // TODO: Find way to block native selection\n  },\n  /**\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseMove (mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n    setEndSelectionFromPoint(pt.x, pt.y);\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseUp (evt, mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n\n    setEndSelectionFromPoint(pt.x, pt.y, true);\n\n    // TODO: Find a way to make this work: Use transformed BBox instead of evt.target\n    // if (lastX === mouseX && lastY === mouseY\n    //   && !rectsIntersect(transbb, {x: pt.x, y: pt.y, width: 0, height: 0})) {\n    //   textActions.toSelectMode(true);\n    // }\n\n    if (\n      evt.target !== curtext &&\n      mouseX < lastX + 2 &&\n      mouseX > lastX - 2 &&\n      mouseY < lastY + 2 &&\n      mouseY > lastY - 2\n    ) {\n      textActions.toSelectMode(true);\n    }\n  },\n  /**\n  * @function\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  setCursor,\n  /**\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  toEditMode (x, y) {\n    allowDbl = false;\n    currentMode = 'textedit';\n    selectorManager.requestSelector(curtext).showGrips(false);\n    // Make selector group accept clicks\n    /* const selector = */ selectorManager.requestSelector(curtext); // Do we need this? Has side effect of setting lock, so keeping for now, but next line wasn't being used\n    // const sel = selector.selectorRect;\n\n    textActions.init();\n\n    $(curtext).css('cursor', 'text');\n\n    // if (supportsEditableText()) {\n    //   curtext.setAttribute('editable', 'simple');\n    //   return;\n    // }\n\n    if (!arguments.length) {\n      setCursor();\n    } else {\n      const pt = screenToPt(x, y);\n      setCursorFromPoint(pt.x, pt.y);\n    }\n\n    setTimeout(function () {\n      allowDbl = true;\n    }, 300);\n  },\n  /**\n  * @param {boolean|Element} selectElem\n  * @fires module:svgcanvas.SvgCanvas#event:selected\n  * @returns {undefined}\n  */\n  toSelectMode (selectElem) {\n    currentMode = 'select';\n    clearInterval(blinker);\n    blinker = null;\n    if (selblock) { $(selblock).attr('display', 'none'); }\n    if (cursor) { $(cursor).attr('visibility', 'hidden'); }\n    $(curtext).css('cursor', 'move');\n\n    if (selectElem) {\n      clearSelection();\n      $(curtext).css('cursor', 'move');\n\n      call('selected', [curtext]);\n      addToSelection([curtext], true);\n    }\n    if (curtext && !curtext.textContent.length) {\n      // No content, so delete\n      canvas.deleteSelectedElements();\n    }\n\n    $(textinput).blur();\n\n    curtext = false;\n\n    // if (supportsEditableText()) {\n    //   curtext.removeAttribute('editable');\n    // }\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  setInputElem (elem) {\n    textinput = elem;\n    // $(textinput).blur(hideCursor);\n  },\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    if (currentMode === 'textedit') {\n      textActions.toSelectMode();\n    }\n  },\n  /**\n  * @param {Element} inputElem Not in use\n  * @returns {undefined}\n  */\n  init (inputElem) {\n    if (!curtext) { return; }\n    let i, end;\n    // if (supportsEditableText()) {\n    //   curtext.select();\n    //   return;\n    // }\n\n    if (!curtext.parentNode) {\n      // Result of the ffClone, need to get correct element\n      curtext = selectedElements[0];\n      selectorManager.requestSelector(curtext).showGrips(false);\n    }\n\n    const str = curtext.textContent;\n    const len = str.length;\n\n    const xform = curtext.getAttribute('transform');\n\n    textbb = utilsGetBBox(curtext);\n\n    matrix = xform ? getMatrix(curtext) : null;\n\n    chardata = [];\n    chardata.length = len;\n    textinput.focus();\n\n    $(curtext).unbind('dblclick', selectWord).dblclick(selectWord);\n\n    if (!len) {\n      end = {x: textbb.x + (textbb.width / 2), width: 0};\n    }\n\n    for (i = 0; i < len; i++) {\n      const start = curtext.getStartPositionOfChar(i);\n      end = curtext.getEndPositionOfChar(i);\n\n      if (!supportsGoodTextCharPos()) {\n        const offset = canvas.contentW * currentZoom;\n        start.x -= offset;\n        end.x -= offset;\n\n        start.x /= currentZoom;\n        end.x /= currentZoom;\n      }\n\n      // Get a \"bbox\" equivalent for each character. Uses the\n      // bbox data of the actual text for y, height purposes\n\n      // TODO: Decide if y, width and height are actually necessary\n      chardata[i] = {\n        x: start.x,\n        y: textbb.y, // start.y?\n        width: end.x - start.x,\n        height: textbb.height\n      };\n    }\n\n    // Add a last bbox for cursor at end of text\n    chardata.push({\n      x: end.x,\n      width: 0\n    });\n    setSelection(textinput.selectionStart, textinput.selectionEnd, true);\n  }\n};\n}());\n\n/**\n* Group: Serialization\n*/\n\n/**\n* Looks at DOM elements inside the `<defs>` to see if they are referred to,\n* removes them from the DOM if they are not.\n* @function module:svgcanvas.SvgCanvas#removeUnusedDefElems\n* @returns {Integer} The number of elements that were removed\n*/\nconst removeUnusedDefElems = this.removeUnusedDefElems = function () {\n  const defs = svgcontent.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (!defs || !defs.length) { return 0; }\n\n  // if (!defs.firstChild) { return; }\n\n  const defelemUses = [];\n  let numRemoved = 0;\n  const attrs = ['fill', 'stroke', 'filter', 'marker-start', 'marker-mid', 'marker-end'];\n  const alen = attrs.length;\n\n  const allEls = svgcontent.getElementsByTagNameNS(NS.SVG, '*');\n  const allLen = allEls.length;\n\n  let i, j;\n  for (i = 0; i < allLen; i++) {\n    const el = allEls[i];\n    for (j = 0; j < alen; j++) {\n      const ref = getUrlFromAttr(el.getAttribute(attrs[j]));\n      if (ref) {\n        defelemUses.push(ref.substr(1));\n      }\n    }\n\n    // gradients can refer to other gradients\n    const href = getHref(el);\n    if (href && href.startsWith('#')) {\n      defelemUses.push(href.substr(1));\n    }\n  }\n\n  const defelems = $(defs).find('linearGradient, radialGradient, filter, marker, svg, symbol');\n  i = defelems.length;\n  while (i--) {\n    const defelem = defelems[i];\n    const {id} = defelem;\n    if (!defelemUses.includes(id)) {\n      // Not found, so remove (but remember)\n      removedElements[id] = defelem;\n      defelem.remove();\n      numRemoved++;\n    }\n  }\n\n  return numRemoved;\n};\n\n/**\n* Main function to set up the SVG content for output.\n* @function module:svgcanvas.SvgCanvas#svgCanvasToString\n* @returns {string} The SVG image for output\n*/\nthis.svgCanvasToString = function () {\n  // keep calling it until there are none to remove\n  while (removeUnusedDefElems() > 0) {}\n\n  pathActions.clear(true);\n\n  // Keep SVG-Edit comment on top\n  $.each(svgcontent.childNodes, function (i, node) {\n    if (i && node.nodeType === 8 && node.data.includes('Created with')) {\n      svgcontent.firstChild.before(node);\n    }\n  });\n\n  // Move out of in-group editing mode\n  if (currentGroup) {\n    draw.leaveContext();\n    selectOnly([currentGroup]);\n  }\n\n  const nakedSvgs = [];\n\n  // Unwrap gsvg if it has no special attributes (only id and style)\n  $(svgcontent).find('g:data(gsvg)').each(function () {\n    const attrs = this.attributes;\n    let len = attrs.length;\n    for (let i = 0; i < len; i++) {\n      if (attrs[i].nodeName === 'id' || attrs[i].nodeName === 'style') {\n        len--;\n      }\n    }\n    // No significant attributes, so ungroup\n    if (len <= 0) {\n      const svg = this.firstChild;\n      nakedSvgs.push(svg);\n      $(this).replaceWith(svg);\n    }\n  });\n  const output = this.svgToString(svgcontent, 0);\n\n  // Rewrap gsvg\n  if (nakedSvgs.length) {\n    $(nakedSvgs).each(function () {\n      groupSvgElem(this);\n    });\n  }\n\n  return output;\n};\n\n/**\n* Sub function ran on each SVG element to convert it to a string as desired.\n* @function module:svgcanvas.SvgCanvas#svgToString\n* @param {Element} elem - The SVG element to convert\n* @param {Integer} indent - Number of spaces to indent this tag\n* @returns {string} The given element as an SVG tag\n*/\nthis.svgToString = function (elem, indent) {\n  const out = [];\n  const unit = curConfig.baseUnit;\n  const unitRe = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n\n  if (elem) {\n    cleanupElement(elem);\n    const attrs = Array.from(elem.attributes);\n    let i;\n    const childs = elem.childNodes;\n    attrs.sort((a, b) => a.name > b.name ? -1 : 1);\n\n    for (i = 0; i < indent; i++) { out.push(' '); }\n    out.push('<'); out.push(elem.nodeName);\n    if (elem.id === 'svgcontent') {\n      // Process root element separately\n      const res = getResolution();\n\n      const vb = '';\n      // TODO: Allow this by dividing all values by current baseVal\n      // Note that this also means we should properly deal with this on import\n      // if (curConfig.baseUnit !== 'px') {\n      //   const unit = curConfig.baseUnit;\n      //   const unitM = getTypeMap()[unit];\n      //   res.w = shortFloat(res.w / unitM);\n      //   res.h = shortFloat(res.h / unitM);\n      //   vb = ' viewBox=\"' + [0, 0, res.w, res.h].join(' ') + '\"';\n      //   res.w += unit;\n      //   res.h += unit;\n      // }\n\n      if (unit !== 'px') {\n        res.w = convertUnit(res.w, unit) + unit;\n        res.h = convertUnit(res.h, unit) + unit;\n      }\n\n      out.push(' width=\"' + res.w + '\" height=\"' + res.h + '\"' + vb + ' xmlns=\"' + NS.SVG + '\"');\n\n      const nsuris = {};\n\n      // Check elements for namespaces, add if found\n      $(elem).find('*').andSelf().each(function () {\n        // const el = this;\n        // for some elements have no attribute\n        const uri = this.namespaceURI;\n        if (uri && !nsuris[uri] && nsMap[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {\n          nsuris[uri] = true;\n          out.push(' xmlns:' + nsMap[uri] + '=\"' + uri + '\"');\n        }\n\n        $.each(this.attributes, function (i, attr) {\n          const uri = attr.namespaceURI;\n          if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {\n            nsuris[uri] = true;\n            out.push(' xmlns:' + nsMap[uri] + '=\"' + uri + '\"');\n          }\n        });\n      });\n\n      i = attrs.length;\n      const attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];\n      while (i--) {\n        const attr = attrs[i];\n        const attrVal = toXml(attr.value);\n\n        // Namespaces have already been dealt with, so skip\n        if (attr.nodeName.startsWith('xmlns:')) { continue; }\n\n        // only serialize attributes we don't use internally\n        if (attrVal !== '' && !attrNames.includes(attr.localName)) {\n          if (!attr.namespaceURI || nsMap[attr.namespaceURI]) {\n            out.push(' ');\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    } else {\n      // Skip empty defs\n      if (elem.nodeName === 'defs' && !elem.firstChild) { return; }\n\n      const mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];\n      for (i = attrs.length - 1; i >= 0; i--) {\n        const attr = attrs[i];\n        let attrVal = toXml(attr.value);\n        // remove bogus attributes added by Gecko\n        if (mozAttrs.includes(attr.localName)) { continue; }\n        if (attrVal !== '') {\n          if (attrVal.startsWith('pointer-events')) { continue; }\n          if (attr.localName === 'class' && attrVal.startsWith('se_')) { continue; }\n          out.push(' ');\n          if (attr.localName === 'd') { attrVal = pathActions.convertPath(elem, true); }\n          if (!isNaN(attrVal)) {\n            attrVal = shortFloat(attrVal);\n          } else if (unitRe.test(attrVal)) {\n            attrVal = shortFloat(attrVal) + unit;\n          }\n\n          // Embed images when saving\n          if (saveOptions.apply &&\n            elem.nodeName === 'image' &&\n            attr.localName === 'href' &&\n            saveOptions.images &&\n            saveOptions.images === 'embed'\n          ) {\n            const img = encodableImages[attrVal];\n            if (img) { attrVal = img; }\n          }\n\n          // map various namespaces to our fixed namespace prefixes\n          // (the default xmlns attribute itself does not get a prefix)\n          if (!attr.namespaceURI || attr.namespaceURI === NS.SVG || nsMap[attr.namespaceURI]) {\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    }\n\n    if (elem.hasChildNodes()) {\n      out.push('>');\n      indent++;\n      let bOneLine = false;\n\n      for (i = 0; i < childs.length; i++) {\n        const child = childs.item(i);\n        switch (child.nodeType) {\n        case 1: // element node\n          out.push('\\n');\n          out.push(this.svgToString(childs.item(i), indent));\n          break;\n        case 3: // text node\n          const str = child.nodeValue.replace(/^\\s+|\\s+$/g, '');\n          if (str !== '') {\n            bOneLine = true;\n            out.push(String(toXml(str)));\n          }\n          break;\n        case 4: // cdata node\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<![CDATA[');\n          out.push(child.nodeValue);\n          out.push(']]>');\n          break;\n        case 8: // comment\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<!--');\n          out.push(child.data);\n          out.push('-->');\n          break;\n        } // switch on node type\n      }\n      indent--;\n      if (!bOneLine) {\n        out.push('\\n');\n        for (i = 0; i < indent; i++) { out.push(' '); }\n      }\n      out.push('</'); out.push(elem.nodeName); out.push('>');\n    } else {\n      out.push('/>');\n    }\n  }\n  return out.join('');\n}; // end svgToString()\n\n/**\n * Function to run when image data is found\n * @callback module:svgcanvas.ImageEmbeddedCallback\n * @param {string|false} result Data URL\n * @returns {undefined}\n */\n/**\n* Converts a given image file to a data URL when possible, then runs a given callback.\n* @function module:svgcanvas.SvgCanvas#embedImage\n* @param {string} src - The path/URL of the image\n* @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found\n* @returns {Promise} Resolves to Data URL (string|false)\n*/\nthis.embedImage = function (src, callback) {\n  return new Promise(function (resolve, reject) {\n    // load in the image and once it's loaded, get the dimensions\n    $(new Image()).load(function (response, status, xhr) {\n      if (status === 'error') {\n        reject(new Error('Error loading image: ' + xhr.status + ' ' + xhr.statusText));\n        return;\n      }\n      // create a canvas the same size as the raster image\n      const cvs = document.createElement('canvas');\n      cvs.width = this.width;\n      cvs.height = this.height;\n      // load the raster image into the canvas\n      cvs.getContext('2d').drawImage(this, 0, 0);\n      // retrieve the data: URL\n      try {\n        let urldata = ';svgedit_url=' + encodeURIComponent(src);\n        urldata = cvs.toDataURL().replace(';base64', urldata + ';base64');\n        encodableImages[src] = urldata;\n      } catch (e) {\n        encodableImages[src] = false;\n      }\n      lastGoodImgUrl = src;\n      if (callback) { callback(encodableImages[src]); }\n      resolve(encodableImages[src]);\n    }).attr('src', src);\n  });\n};\n\n/**\n* Sets a given URL to be a \"last good image\" URL.\n* @function module:svgcanvas.SvgCanvas#setGoodImage\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setGoodImage = function (val) {\n  lastGoodImgUrl = val;\n};\n\n/**\n* Does nothing by default, handled by optional widget/extension.\n* @function module:svgcanvas.SvgCanvas#open\n* @returns {undefined}\n*/\nthis.open = function () {\n};\n\n/**\n* Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.\n* This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save\n* function to the 'saved' event.\n* @function module:svgcanvas.SvgCanvas#save\n* @param {module:svgcanvas.SaveOptions} opts\n* @fires module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\nthis.save = function (opts) {\n  // remove the selected outline before serializing\n  clearSelection();\n  // Update save options if provided\n  if (opts) { $.extend(saveOptions, opts); }\n  saveOptions.apply = true;\n\n  // no need for doctype, see https://jwatt.org/svg/authoring/#doctype-declaration\n  const str = this.svgCanvasToString();\n  call('saved', str);\n};\n\n/**\n* @typedef {GenericObject} module:svgcanvas.IssuesAndCodes\n* @property {string[]} issueCodes The locale-independent code names\n* @property {string[]} issues The localized descriptions\n*/\n\n/**\n* Codes only is useful for locale-independent detection.\n* @returns {module:svgcanvas.IssuesAndCodes}\n*/\nfunction getIssues () {\n  // remove the selected outline before serializing\n  clearSelection();\n\n  // Check for known CanVG issues\n  const issues = [];\n  const issueCodes = [];\n\n  // Selector and notice\n  const issueList = {\n    feGaussianBlur: uiStrings.exportNoBlur,\n    foreignObject: uiStrings.exportNoforeignObject,\n    '[stroke-dasharray]': uiStrings.exportNoDashArray\n  };\n  const content = $(svgcontent);\n\n  // Add font/text check if Canvas Text API is not implemented\n  if (!('font' in $('<canvas>')[0].getContext('2d'))) {\n    issueList.text = uiStrings.exportNoText;\n  }\n\n  $.each(issueList, function (sel, descr) {\n    if (content.find(sel).length) {\n      issueCodes.push(sel);\n      issues.push(descr);\n    }\n  });\n  return {issues, issueCodes};\n}\n\nlet canvg;\n/**\n* @typedef {\"feGaussianBlur\"|\"foreignObject\"|\"[stroke-dasharray]\"|\"text\"} module:svgcanvas.IssueCode\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ImageExportedResults\n* @property {string} datauri Contents as a Data URL\n* @property {string} bloburl May be the empty string\n* @property {string} svg The SVG contents as a string\n* @property {string[]} issues The localization messages of `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes CanVG issues found with the SVG\n* @property {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} type The chosen image type\n* @property {\"image/png\"|\"image/jpeg\"|\"image/bmp\"|\"image/webp\"} mimeType The image MIME type\n* @property {Float} quality A decimal between 0 and 1 (for use with JPEG or WEBP)\n* @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added\n*/\n\n/**\n * Function to run when image data is found\n * @callback module:svgcanvas.ImageExportedCallback\n * @param {module:svgcanvas.ImageExportedResults} obj\n * @returns {undefined}\n */\n/**\n* Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,\n* then calls \"exported\" with an object including the string, image\n* information, and any issues found.\n* @function module:svgcanvas.SvgCanvas#rasterExport\n* @param {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} [imgType=\"PNG\"]\n* @param {Float} [quality] Between 0 and 1\n* @param {string} [exportWindowName]\n* @param {module:svgcanvas.ImageExportedCallback} [cb]\n* @param {PlainObject} [opts]\n* @param {boolean} [opts.avoidEvent]\n* @fires module:svgcanvas.SvgCanvas#event:exported\n* @todo Confirm/fix ICO type\n* @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}\n*/\nthis.rasterExport = function (imgType, quality, exportWindowName, cb, opts = {}) {\n  const type = imgType === 'ICO' ? 'BMP' : (imgType || 'PNG');\n  const mimeType = 'image/' + type.toLowerCase();\n  const {issues, issueCodes} = getIssues();\n  const svg = this.svgCanvasToString();\n\n  return new Promise(async (resolve, reject) => {\n    if (!canvg) {\n      ({canvg} = await importSetGlobal(curConfig.canvgPath + 'canvg.js', {\n        global: 'canvg'\n      }));\n    }\n    if (!$('#export_canvas').length) {\n      $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');\n    }\n    const c = $('#export_canvas')[0];\n    c.width = canvas.contentW;\n    c.height = canvas.contentH;\n\n    await canvg(c, svg);\n    const dataURLType = type.toLowerCase();\n    const datauri = quality\n      ? c.toDataURL('image/' + dataURLType, quality)\n      : c.toDataURL('image/' + dataURLType);\n    let bloburl;\n    function done () {\n      const obj = {\n        datauri, bloburl, svg, issues, issueCodes, type: imgType,\n        mimeType, quality, exportWindowName\n      };\n      if (!opts.avoidEvent) {\n        call('exported', obj);\n      }\n      if (cb) {\n        cb(obj);\n      }\n      resolve(obj);\n    }\n    if (c.toBlob) {\n      c.toBlob((blob) => {\n        bloburl = createObjectURL(blob);\n        done();\n      }, mimeType, quality);\n      return;\n    }\n    bloburl = dataURLToObjectURL(datauri);\n    done();\n  });\n};\n/**\n * @external jsPDF\n */\n/**\n * @typedef {undefined|\"save\"|\"arraybuffer\"|\"blob\"|\"datauristring\"|\"dataurlstring\"|\"dataurlnewwindow\"|\"datauri\"|\"dataurl\"} external:jsPDF.OutputType\n * @todo Newer version to add also allows these `outputType` values \"bloburi\"|\"bloburl\" which return strings, so document here and for `outputType` of `module:svgcanvas.PDFExportedResults` below if added\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.PDFExportedResults\n* @property {string} svg The SVG PDF output\n* @property {string|ArrayBuffer|Blob|window} output The output based on the `outputType`;\n* if `undefined`, \"datauristring\", \"dataurlstring\", \"datauri\",\n* or \"dataurl\", will be a string (`undefined` gives a document, while the others\n* build as Data URLs; \"datauri\" and \"dataurl\" change the location of the current page); if\n* \"arraybuffer\", will return `ArrayBuffer`; if \"blob\", returns a `Blob`;\n* if \"dataurlnewwindow\", will change the current page's location and return a string\n* if in Safari and no window object is found; otherwise opens in, and returns, a new `window`\n* object; if \"save\", will have the same return as \"dataurlnewwindow\" if\n* `navigator.getUserMedia` support is found without `URL.createObjectURL` support; otherwise\n* returns `undefined` but attempts to save\n* @property {external:jsPDF.OutputType} outputType\n* @property {string[]} issues The human-readable localization messages of corresponding `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes\n* @property {string} exportWindowName\n*/\n\n/**\n * Function to run when PDF data is found\n * @callback module:svgcanvas.PDFExportedCallback\n * @param {module:svgcanvas.PDFExportedResults} obj\n * @returns {undefined}\n */\n/**\n* Generates a PDF based on the current image, then calls \"exportedPDF\" with\n* an object including the string, the data URL, and any issues found.\n* @function module:svgcanvas.SvgCanvas#exportPDF\n* @param {string} [exportWindowName] Will also be used for the download file name here\n* @param {external:jsPDF.OutputType} [outputType=\"dataurlstring\"]\n* @param {module:svgcanvas.PDFExportedCallback} [cb]\n* @fires module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}\n*/\nthis.exportPDF = function (\n  exportWindowName,\n  outputType = isChrome() ? 'save' : undefined,\n  cb\n) {\n  const that = this;\n  return new Promise(async (resolve, reject) => {\n    if (!window.jsPDF) {\n      // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n      await importScript([\n        // We do not currently have these paths configurable as they are\n        //   currently global-only, so not Rolled-up\n        'jspdf/underscore-min.js',\n        'jspdf/jspdf.min.js'\n      ]);\n\n      const modularVersion = !('svgEditor' in window) ||\n        !window.svgEditor ||\n        window.svgEditor.modules !== false;\n      // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n      await importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {\n        type: modularVersion\n          ? 'module'\n          : 'text/javascript'\n      });\n      // await importModule('jspdf/jspdf.plugin.svgToPdf.js');\n    }\n\n    const res = getResolution();\n    const orientation = res.w > res.h ? 'landscape' : 'portrait';\n    const unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes\n\n    // Todo: Give options to use predefined jsPDF formats like \"a4\", etc. from pull-down (with option to keep customizable)\n    const doc = jsPDF({\n      orientation,\n      unit,\n      format: [res.w, res.h]\n      // , compressPdf: true\n    });\n    const docTitle = getDocumentTitle();\n    doc.setProperties({\n      title: docTitle /* ,\n      subject: '',\n      author: '',\n      keywords: '',\n      creator: '' */\n    });\n    const {issues, issueCodes} = getIssues();\n    const svg = that.svgCanvasToString();\n    doc.addSVG(svg, 0, 0);\n\n    // doc.output('save'); // Works to open in a new\n    //  window; todo: configure this and other export\n    //  options to optionally work in this manner as\n    //  opposed to opening a new tab\n    outputType = outputType || 'dataurlstring';\n    const obj = {svg, issues, issueCodes, exportWindowName, outputType};\n    obj.output = doc.output(outputType, outputType === 'save' ? (exportWindowName || 'svg.pdf') : undefined);\n    if (cb) {\n      cb(obj);\n    }\n    resolve(obj);\n    call('exportedPDF', obj);\n  });\n};\n\n/**\n* Returns the current drawing as raw SVG XML text.\n* @function module:svgcanvas.SvgCanvas#getSvgString\n* @returns {string} The current drawing as raw SVG XML text.\n*/\nthis.getSvgString = function () {\n  saveOptions.apply = false;\n  return this.svgCanvasToString();\n};\n\n/**\n* This function determines whether to use a nonce in the prefix, when\n* generating IDs for future documents in SVG-Edit.\n* If you're controlling SVG-Edit externally, and want randomized IDs, call\n* this BEFORE calling `svgCanvas.setSvgString`.\n* @function module:svgcanvas.SvgCanvas#randomizeIds\n* @param {boolean} [enableRandomization] If true, adds a nonce to the prefix. Thus\n* `svgCanvas.randomizeIds() <==> svgCanvas.randomizeIds(true)`\n* @returns {undefined}\n*/\nthis.randomizeIds = function (enableRandomization) {\n  if (arguments.length > 0 && enableRandomization === false) {\n    draw.randomizeIds(false, getCurrentDrawing());\n  } else {\n    draw.randomizeIds(true, getCurrentDrawing());\n  }\n};\n\n/**\n* Ensure each element has a unique ID.\n* @function module:svgcanvas.SvgCanvas#uniquifyElems\n* @param {Element} g - The parent element of the tree to give unique IDs\n* @returns {undefined}\n*/\nconst uniquifyElems = this.uniquifyElems = function (g) {\n  const ids = {};\n  // TODO: Handle markers and connectors. These are not yet re-identified properly\n  // as their referring elements do not get remapped.\n  //\n  // <marker id='se_marker_end_svg_7'/>\n  // <polyline id='svg_7' se:connector='svg_1 svg_6' marker-end='url(#se_marker_end_svg_7)'/>\n  //\n  // Problem #1: if svg_1 gets renamed, we do not update the polyline's se:connector attribute\n  // Problem #2: if the polyline svg_7 gets renamed, we do not update the marker id nor the polyline's marker-end attribute\n  const refElems = ['filter', 'linearGradient', 'pattern', 'radialGradient', 'symbol', 'textPath', 'use'];\n\n  walkTree(g, function (n) {\n    // if it's an element node\n    if (n.nodeType === 1) {\n      // and the element has an ID\n      if (n.id) {\n        // and we haven't tracked this ID yet\n        if (!(n.id in ids)) {\n          // add this id to our map\n          ids[n.id] = {elem: null, attrs: [], hrefs: []};\n        }\n        ids[n.id].elem = n;\n      }\n\n      // now search for all attributes on this element that might refer\n      // to other elements\n      $.each(refAttrs, function (i, attr) {\n        const attrnode = n.getAttributeNode(attr);\n        if (attrnode) {\n          // the incoming file has been sanitized, so we should be able to safely just strip off the leading #\n          const url = getUrlFromAttr(attrnode.value),\n            refid = url ? url.substr(1) : null;\n          if (refid) {\n            if (!(refid in ids)) {\n              // add this id to our map\n              ids[refid] = {elem: null, attrs: [], hrefs: []};\n            }\n            ids[refid].attrs.push(attrnode);\n          }\n        }\n      });\n\n      // check xlink:href now\n      const href = getHref(n);\n      // TODO: what if an <image> or <a> element refers to an element internally?\n      if (href && refElems.includes(n.nodeName)) {\n        const refid = href.substr(1);\n        if (refid) {\n          if (!(refid in ids)) {\n            // add this id to our map\n            ids[refid] = {elem: null, attrs: [], hrefs: []};\n          }\n          ids[refid].hrefs.push(n);\n        }\n      }\n    }\n  });\n\n  // in ids, we now have a map of ids, elements and attributes, let's re-identify\n  for (const oldid in ids) {\n    if (!oldid) { continue; }\n    const {elem} = ids[oldid];\n    if (elem) {\n      const newid = getNextId();\n\n      // assign element its new id\n      elem.id = newid;\n\n      // remap all url() attributes\n      const {attrs} = ids[oldid];\n      let j = attrs.length;\n      while (j--) {\n        const attr = attrs[j];\n        attr.ownerElement.setAttribute(attr.name, 'url(#' + newid + ')');\n      }\n\n      // remap all href attributes\n      const hreffers = ids[oldid].hrefs;\n      let k = hreffers.length;\n      while (k--) {\n        const hreffer = hreffers[k];\n        setHref(hreffer, '#' + newid);\n      }\n    }\n  }\n};\n\n/**\n* Assigns reference data for each use element.\n* @function module:svgcanvas.SvgCanvas#setUseData\n* @param {Element} parent\n* @returns {undefined}\n*/\nconst setUseData = this.setUseData = function (parent) {\n  let elems = $(parent);\n\n  if (parent.tagName !== 'use') {\n    elems = elems.find('use');\n  }\n\n  elems.each(function () {\n    const id = getHref(this).substr(1);\n    const refElem = getElem(id);\n    if (!refElem) { return; }\n    $(this).data('ref', refElem);\n    if (refElem.tagName === 'symbol' || refElem.tagName === 'svg') {\n      $(this).data('symbol', refElem).data('ref', refElem);\n    }\n  });\n};\n\n/**\n* Converts gradients from userSpaceOnUse to objectBoundingBox.\n* @function module:svgcanvas.SvgCanvas#convertGradients\n* @param {Element} elem\n* @returns {undefined}\n*/\nconst convertGradients = this.convertGradients = function (elem) {\n  let elems = $(elem).find('linearGradient, radialGradient');\n  if (!elems.length && isWebkit()) {\n    // Bug in webkit prevents regular *Gradient selector search\n    elems = $(elem).find('*').filter(function () {\n      return (this.tagName.includes('Gradient'));\n    });\n  }\n\n  elems.each(function () {\n    const grad = this;\n    if ($(grad).attr('gradientUnits') === 'userSpaceOnUse') {\n      // TODO: Support more than one element with this ref by duplicating parent grad\n      const elems = $(svgcontent).find('[fill=\"url(#' + grad.id + ')\"],[stroke=\"url(#' + grad.id + ')\"]');\n      if (!elems.length) { return; }\n\n      // get object's bounding box\n      const bb = utilsGetBBox(elems[0]);\n\n      // This will occur if the element is inside a <defs> or a <symbol>,\n      // in which we shouldn't need to convert anyway.\n      if (!bb) { return; }\n\n      if (grad.tagName === 'linearGradient') {\n        const gCoords = $(grad).attr(['x1', 'y1', 'x2', 'y2']);\n\n        // If has transform, convert\n        const tlist = grad.gradientTransform.baseVal;\n        if (tlist && tlist.numberOfItems > 0) {\n          const m = transformListToTransform(tlist).matrix;\n          const pt1 = transformPoint(gCoords.x1, gCoords.y1, m);\n          const pt2 = transformPoint(gCoords.x2, gCoords.y2, m);\n\n          gCoords.x1 = pt1.x;\n          gCoords.y1 = pt1.y;\n          gCoords.x2 = pt2.x;\n          gCoords.y2 = pt2.y;\n          grad.removeAttribute('gradientTransform');\n        }\n\n        $(grad).attr({\n          x1: (gCoords.x1 - bb.x) / bb.width,\n          y1: (gCoords.y1 - bb.y) / bb.height,\n          x2: (gCoords.x2 - bb.x) / bb.width,\n          y2: (gCoords.y2 - bb.y) / bb.height\n        });\n        grad.removeAttribute('gradientUnits');\n      }\n      // else {\n      //   Note: radialGradient elements cannot be easily converted\n      //   because userSpaceOnUse will keep circular gradients, while\n      //   objectBoundingBox will x/y scale the gradient according to\n      //   its bbox.\n      //\n      //   For now we'll do nothing, though we should probably have\n      //   the gradient be updated as the element is moved, as\n      //   inkscape/illustrator do.\n      //\n      //   const gCoords = $(grad).attr(['cx', 'cy', 'r']);\n      //\n      //   $(grad).attr({\n      //     cx: (gCoords.cx - bb.x) / bb.width,\n      //     cy: (gCoords.cy - bb.y) / bb.height,\n      //     r: gCoords.r\n      //   });\n      //\n      //   grad.removeAttribute('gradientUnits');\n      // }\n    }\n  });\n};\n\n/**\n* Converts selected/given `<use>` or child SVG element to a group.\n* @function module:svgcanvas.SvgCanvas#convertToGroup\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nconst convertToGroup = this.convertToGroup = function (elem) {\n  if (!elem) {\n    elem = selectedElements[0];\n  }\n  const $elem = $(elem);\n  const batchCmd = new BatchCommand();\n  let ts;\n\n  if ($elem.data('gsvg')) {\n    // Use the gsvg as the new group\n    const svg = elem.firstChild;\n    const pt = $(svg).attr(['x', 'y']);\n\n    $(elem.firstChild.firstChild).unwrap();\n    $(elem).removeData('gsvg');\n\n    const tlist = getTransformList(elem);\n    const xform = svgroot.createSVGTransform();\n    xform.setTranslate(pt.x, pt.y);\n    tlist.appendItem(xform);\n    recalculateDimensions(elem);\n    call('selected', [elem]);\n  } else if ($elem.data('symbol')) {\n    elem = $elem.data('symbol');\n\n    ts = $elem.attr('transform');\n    const pos = $elem.attr(['x', 'y']);\n\n    const vb = elem.getAttribute('viewBox');\n\n    if (vb) {\n      const nums = vb.split(' ');\n      pos.x -= +nums[0];\n      pos.y -= +nums[1];\n    }\n\n    // Not ideal, but works\n    ts += ' translate(' + (pos.x || 0) + ',' + (pos.y || 0) + ')';\n\n    const prev = $elem.prev();\n\n    // Remove <use> element\n    batchCmd.addSubCommand(new RemoveElementCommand($elem[0], $elem[0].nextSibling, $elem[0].parentNode));\n    $elem.remove();\n\n    // See if other elements reference this symbol\n    const hasMore = $(svgcontent).find('use:data(symbol)').length;\n\n    const g = svgdoc.createElementNS(NS.SVG, 'g');\n    const childs = elem.childNodes;\n\n    let i;\n    for (i = 0; i < childs.length; i++) {\n      g.append(childs[i].cloneNode(true));\n    }\n\n    // Duplicate the gradients for Gecko, since they weren't included in the <symbol>\n    if (isGecko()) {\n      const dupeGrads = $(findDefs()).children('linearGradient,radialGradient,pattern').clone();\n      $(g).append(dupeGrads);\n    }\n\n    if (ts) {\n      g.setAttribute('transform', ts);\n    }\n\n    const parent = elem.parentNode;\n\n    uniquifyElems(g);\n\n    // Put the dupe gradients back into <defs> (after uniquifying them)\n    if (isGecko()) {\n      $(findDefs()).append($(g).find('linearGradient,radialGradient,pattern'));\n    }\n\n    // now give the g itself a new id\n    g.id = getNextId();\n\n    prev.after(g);\n\n    if (parent) {\n      if (!hasMore) {\n        // remove symbol/svg element\n        const {nextSibling} = elem;\n        elem.remove();\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n      }\n      batchCmd.addSubCommand(new InsertElementCommand(g));\n    }\n\n    setUseData(g);\n\n    if (isGecko()) {\n      convertGradients(findDefs());\n    } else {\n      convertGradients(g);\n    }\n\n    // recalculate dimensions on the top-level children so that unnecessary transforms\n    // are removed\n    walkTreePost(g, function (n) {\n      try {\n        recalculateDimensions(n);\n      } catch (e) {\n        console.log(e);\n      }\n    });\n\n    // Give ID for any visible element missing one\n    $(g).find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    selectOnly([g]);\n\n    const cm = pushGroupProperties(g, true);\n    if (cm) {\n      batchCmd.addSubCommand(cm);\n    }\n\n    addCommandToHistory(batchCmd);\n  } else {\n    console.log('Unexpected element to ungroup:', elem);\n  }\n};\n\n/**\n* This function sets the current drawing as the input SVG XML.\n* @function module:svgcanvas.SvgCanvas#setSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @param {boolean} [preventUndo=false] - Indicates if we want to do the\n* changes without adding them to the undo stack - e.g. for initializing a\n* drawing on page load.\n* @fires module:svgcanvas.SvgCanvas#event:setnonce\n* @fires module:svgcanvas.SvgCanvas#event:unsetnonce\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} This function returns `false` if the set was\n*     unsuccessful, `true` otherwise.\n*/\nthis.setSvgString = function (xmlString, preventUndo) {\n  try {\n    // convert string into XML document\n    const newDoc = text2xml(xmlString);\n    if (newDoc.firstElementChild &&\n      newDoc.firstElementChild.namespaceURI !== NS.SVG) {\n      return false;\n    }\n\n    this.prepareSvg(newDoc);\n\n    const batchCmd = new BatchCommand('Change Source');\n\n    // remove old svg document\n    const {nextSibling} = svgcontent;\n    const oldzoom = svgroot.removeChild(svgcontent);\n    batchCmd.addSubCommand(new RemoveElementCommand(oldzoom, nextSibling, svgroot));\n\n    // set new svg document\n    // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n    if (svgdoc.adoptNode) {\n      svgcontent = svgdoc.adoptNode(newDoc.documentElement);\n    } else {\n      svgcontent = svgdoc.importNode(newDoc.documentElement, true);\n    }\n\n    svgroot.append(svgcontent);\n    const content = $(svgcontent);\n\n    canvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n    // retrieve or set the nonce\n    const nonce = getCurrentDrawing().getNonce();\n    if (nonce) {\n      call('setnonce', nonce);\n    } else {\n      call('unsetnonce');\n    }\n\n    // change image href vals if possible\n    content.find('image').each(function () {\n      const image = this;\n      preventClickDefault(image);\n      const val = getHref(this);\n      if (val) {\n        if (val.startsWith('data:')) {\n          // Check if an SVG-edit data URI\n          const m = val.match(/svgedit_url=(.*?);/);\n          if (m) {\n            const url = decodeURIComponent(m[1]);\n            $(new Image()).load(function () {\n              image.setAttributeNS(NS.XLINK, 'xlink:href', url);\n            }).attr('src', url);\n          }\n        }\n        // Add to encodableImages if it loads\n        canvas.embedImage(val);\n      }\n    });\n\n    // Wrap child SVGs in group elements\n    content.find('svg').each(function () {\n      // Skip if it's in a <defs>\n      if ($(this).closest('defs').length) { return; }\n\n      uniquifyElems(this);\n\n      // Check if it already has a gsvg group\n      const pa = this.parentNode;\n      if (pa.childNodes.length === 1 && pa.nodeName === 'g') {\n        $(pa).data('gsvg', this);\n        pa.id = pa.id || getNextId();\n      } else {\n        groupSvgElem(this);\n      }\n    });\n\n    // For Firefox: Put all paint elems in defs\n    if (isGecko()) {\n      content.find('linearGradient, radialGradient, pattern').appendTo(findDefs());\n    }\n\n    // Set ref element for <use> elements\n\n    // TODO: This should also be done if the object is re-added through \"redo\"\n    setUseData(content);\n\n    convertGradients(content[0]);\n\n    const attrs = {\n      id: 'svgcontent',\n      overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden'\n    };\n\n    let percs = false;\n\n    // determine proper size\n    if (content.attr('viewBox')) {\n      const vb = content.attr('viewBox').split(' ');\n      attrs.width = vb[2];\n      attrs.height = vb[3];\n    // handle content that doesn't have a viewBox\n    } else {\n      $.each(['width', 'height'], function (i, dim) {\n        // Set to 100 if not given\n        const val = content.attr(dim) || '100%';\n\n        if (String(val).substr(-1) === '%') {\n          // Use user units if percentage given\n          percs = true;\n        } else {\n          attrs[dim] = convertToNum(dim, val);\n        }\n      });\n    }\n\n    // identify layers\n    draw.identifyLayers();\n\n    // Give ID for any visible layer children missing one\n    content.children().find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    // Percentage width/height, so let's base it on visible elements\n    if (percs) {\n      const bb = getStrokedBBoxDefaultVisible();\n      attrs.width = bb.width + bb.x;\n      attrs.height = bb.height + bb.y;\n    }\n\n    // Just in case negative numbers are given or\n    // result from the percs calculation\n    if (attrs.width <= 0) { attrs.width = 100; }\n    if (attrs.height <= 0) { attrs.height = 100; }\n\n    content.attr(attrs);\n    this.contentW = attrs.width;\n    this.contentH = attrs.height;\n\n    batchCmd.addSubCommand(new InsertElementCommand(svgcontent));\n    // update root to the correct size\n    const changes = content.attr(['width', 'height']);\n    batchCmd.addSubCommand(new ChangeElementCommand(svgroot, changes));\n\n    // reset zoom\n    currentZoom = 1;\n\n    // reset transform lists\n    resetListMap();\n    clearSelection();\n    pathModule.clearData();\n    svgroot.append(selectorManager.selectorParentGroup);\n\n    if (!preventUndo) addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e);\n    return false;\n  }\n\n  return true;\n};\n\n/**\n* This function imports the input SVG XML as a `<symbol>` in the `<defs>`, then adds a\n* `<use>` to the current layer.\n* @function module:svgcanvas.SvgCanvas#importSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {null|Element} This function returns null if the import was unsuccessful, or the element otherwise.\n* @todo\n* - properly handle if namespace is introduced by imported content (must add to svgcontent\n* and update all prefixes in the imported node)\n* - properly handle recalculating dimensions, `recalculateDimensions()` doesn't handle\n* arbitrary transform lists, but makes some assumptions about how the transform list\n* was obtained\n*/\nthis.importSvgString = function (xmlString) {\n  let j, ts, useEl;\n  try {\n    // Get unique ID\n    const uid = encode64(xmlString.length + xmlString).substr(0, 32);\n\n    let useExisting = false;\n    // Look for symbol and make sure symbol exists in image\n    if (importIds[uid]) {\n      if ($(importIds[uid].symbol).parents('#svgroot').length) {\n        useExisting = true;\n      }\n    }\n\n    const batchCmd = new BatchCommand('Import Image');\n    let symbol;\n    if (useExisting) {\n      ({symbol} = importIds[uid]);\n      ts = importIds[uid].xform;\n    } else {\n      // convert string into XML document\n      const newDoc = text2xml(xmlString);\n\n      this.prepareSvg(newDoc);\n\n      // import new svg document into our document\n      let svg;\n      // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n      if (svgdoc.adoptNode) {\n        svg = svgdoc.adoptNode(newDoc.documentElement);\n      } else {\n        svg = svgdoc.importNode(newDoc.documentElement, true);\n      }\n\n      uniquifyElems(svg);\n\n      const innerw = convertToNum('width', svg.getAttribute('width')),\n        innerh = convertToNum('height', svg.getAttribute('height')),\n        innervb = svg.getAttribute('viewBox'),\n        // if no explicit viewbox, create one out of the width and height\n        vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];\n      for (j = 0; j < 4; ++j) {\n        vb[j] = +(vb[j]);\n      }\n\n      // TODO: properly handle preserveAspectRatio\n      const // canvasw = +svgcontent.getAttribute('width'),\n        canvash = +svgcontent.getAttribute('height');\n      // imported content should be 1/3 of the canvas on its largest dimension\n\n      if (innerh > innerw) {\n        ts = 'scale(' + (canvash / 3) / vb[3] + ')';\n      } else {\n        ts = 'scale(' + (canvash / 3) / vb[2] + ')';\n      }\n\n      // Hack to make recalculateDimensions understand how to scale\n      ts = 'translate(0) ' + ts + ' translate(0)';\n\n      symbol = svgdoc.createElementNS(NS.SVG, 'symbol');\n      const defs = findDefs();\n\n      if (isGecko()) {\n        // Move all gradients into root for Firefox, workaround for this bug:\n        // https://bugzilla.mozilla.org/show_bug.cgi?id=353575\n        // TODO: Make this properly undo-able.\n        $(svg).find('linearGradient, radialGradient, pattern').appendTo(defs);\n      }\n\n      while (svg.firstChild) {\n        const first = svg.firstChild;\n        symbol.append(first);\n      }\n      const attrs = svg.attributes;\n      for (let i = 0; i < attrs.length; i++) {\n        const attr = attrs[i];\n        symbol.setAttribute(attr.nodeName, attr.value);\n      }\n      symbol.id = getNextId();\n\n      // Store data\n      importIds[uid] = {\n        symbol,\n        xform: ts\n      };\n\n      findDefs().append(symbol);\n      batchCmd.addSubCommand(new InsertElementCommand(symbol));\n    }\n\n    useEl = svgdoc.createElementNS(NS.SVG, 'use');\n    useEl.id = getNextId();\n    setHref(useEl, '#' + symbol.id);\n\n    (currentGroup || getCurrentDrawing().getCurrentLayer()).append(useEl);\n    batchCmd.addSubCommand(new InsertElementCommand(useEl));\n    clearSelection();\n\n    useEl.setAttribute('transform', ts);\n    recalculateDimensions(useEl);\n    $(useEl).data('symbol', symbol).data('ref', symbol);\n    addToSelection([useEl]);\n\n    // TODO: Find way to add this in a recalculateDimensions-parsable way\n    // if (vb[0] !== 0 || vb[1] !== 0) {\n    //   ts = 'translate(' + (-vb[0]) + ',' + (-vb[1]) + ') ' + ts;\n    // }\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e);\n    return null;\n  }\n\n  // we want to return the element so we can automatically select it\n  return useEl;\n};\n\n// Could deprecate, but besides external uses, their usage makes clear that\n//  canvas is a dependency for all of these\n[\n  'identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer',\n  'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition',\n  'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers',\n  'leaveContext', 'setContext'\n].forEach((prop) => {\n  canvas[prop] = draw[prop];\n});\ndraw.init(\n  /**\n  * @implements {module:draw.DrawCanvasInit}\n  */\n  {\n    pathActions,\n    getCurrentGroup () {\n      return currentGroup;\n    },\n    setCurrentGroup (cg) {\n      currentGroup = cg;\n    },\n    getSelectedElements,\n    getSVGContent,\n    undoMgr,\n    elData,\n    getCurrentDrawing,\n    clearSelection,\n    call,\n    addCommandToHistory,\n    /**\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    changeSVGContent () {\n      call('changed', [svgcontent]);\n    }\n  }\n);\n\n/**\n* Group: Document functions\n*/\n\n/**\n* Clears the current document. This is not an undoable action.\n* @function module:svgcanvas.SvgCanvas#clear\n* @fires module:svgcanvas.SvgCanvas#event:cleared\n* @returns {undefined}\n*/\nthis.clear = function () {\n  pathActions.clear();\n\n  clearSelection();\n\n  // clear the svgcontent node\n  canvas.clearSvgContentElement();\n\n  // create new document\n  canvas.current_drawing_ = new draw.Drawing(svgcontent);\n\n  // create empty first layer\n  canvas.createLayer('Layer 1');\n\n  // clear the undo stack\n  canvas.undoMgr.resetUndoStack();\n\n  // reset the selector manager\n  selectorManager.initGroup();\n\n  // reset the rubber band box\n  rubberBox = selectorManager.getRubberBandBox();\n\n  call('cleared');\n};\n\n// Alias function\nthis.linkControlPoints = pathActions.linkControlPoints;\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @returns {Element} The content DOM element\n*/\nthis.getContentElem = function () { return svgcontent; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getRootElem\n* @returns {SVGSVGElement} The root DOM element\n*/\nthis.getRootElem = function () { return svgroot; };\n\n/**\n* @typedef {PlainObject} DimensionsAndZoom\n* @property {Float} w Width\n* @property {Float} h Height\n* @property {Float} zoom Zoom\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getResolution\n* @returns {DimensionsAndZoom} The current dimensions and zoom level in an object\n*/\nconst getResolution = this.getResolution = function () {\n//    const vb = svgcontent.getAttribute('viewBox').split(' ');\n//    return {w:vb[2], h:vb[3], zoom: currentZoom};\n\n  const w = svgcontent.getAttribute('width') / currentZoom;\n  const h = svgcontent.getAttribute('height') / currentZoom;\n\n  return {\n    w,\n    h,\n    zoom: currentZoom\n  };\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getSnapToGrid\n* @returns {boolean} The current snap to grid setting\n*/\nthis.getSnapToGrid = function () { return curConfig.gridSnapping; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getVersion\n* @returns {string} A string which describes the revision number of SvgCanvas.\n*/\nthis.getVersion = function () {\n  return 'svgcanvas.js ($Rev$)';\n};\n\n/**\n* Update interface strings with given values.\n* @function module:svgcanvas.SvgCanvas#setUiStrings\n* @param {module:path.uiStrings} strs - Object with strings (see the [locales API]{@link module:locale.LocaleStrings} and the [tutorial]{@tutorial LocaleDocs})\n* @returns {undefined}\n*/\nthis.setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.notification);\n  pathModule.setUiStrings(strs);\n};\n\n/**\n* Update configuration options with given values.\n* @function module:svgcanvas.SvgCanvas#setConfig\n* @param {module:SVGEditor.Config} opts - Object with options\n* @returns {undefined}\n*/\nthis.setConfig = function (opts) {\n  Object.assign(curConfig, opts);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getTitle\n* @param {Element} elem\n* @returns {string|undefined} the current group/SVG's title contents\n*/\nthis.getTitle = function (elem) {\n  elem = elem || selectedElements[0];\n  if (!elem) { return; }\n  elem = $(elem).data('gsvg') || $(elem).data('symbol') || elem;\n  const childs = elem.childNodes;\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      return childs[i].textContent;\n    }\n  }\n  return '';\n};\n\n/**\n* Sets the group/SVG's title content.\n* @function module:svgcanvas.SvgCanvas#setGroupTitle\n* @param {string} val\n* @todo Combine this with `setDocumentTitle`\n* @returns {undefined}\n*/\nthis.setGroupTitle = function (val) {\n  let elem = selectedElements[0];\n  elem = $(elem).data('gsvg') || elem;\n\n  const ts = $(elem).children('title');\n\n  const batchCmd = new BatchCommand('Set Label');\n\n  let title;\n  if (!val.length) {\n    // Remove title element\n    const tsNextSibling = ts.nextSibling;\n    batchCmd.addSubCommand(new RemoveElementCommand(ts[0], tsNextSibling, elem));\n    ts.remove();\n  } else if (ts.length) {\n    // Change title contents\n    title = ts[0];\n    batchCmd.addSubCommand(new ChangeElementCommand(title, {'#text': title.textContent}));\n    title.textContent = val;\n  } else {\n    // Add title element\n    title = svgdoc.createElementNS(NS.SVG, 'title');\n    title.textContent = val;\n    $(elem).prepend(title);\n    batchCmd.addSubCommand(new InsertElementCommand(title));\n  }\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getDocumentTitle\n* @returns {string|undefined} The current document title or an empty string if not found\n*/\nconst getDocumentTitle = this.getDocumentTitle = function () {\n  return canvas.getTitle(svgcontent);\n};\n\n/**\n* Adds/updates a title element for the document with the given name.\n* This is an undoable action.\n* @function module:svgcanvas.SvgCanvas#setDocumentTitle\n* @param {string} newTitle - String with the new title\n* @returns {undefined}\n*/\nthis.setDocumentTitle = function (newTitle) {\n  const childs = svgcontent.childNodes;\n  let docTitle = false, oldTitle = '';\n\n  const batchCmd = new BatchCommand('Change Image Title');\n\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      docTitle = childs[i];\n      oldTitle = docTitle.textContent;\n      break;\n    }\n  }\n  if (!docTitle) {\n    docTitle = svgdoc.createElementNS(NS.SVG, 'title');\n    svgcontent.insertBefore(docTitle, svgcontent.firstChild);\n    // svgcontent.firstChild.before(docTitle); // Ok to replace above with this?\n  }\n\n  if (newTitle.length) {\n    docTitle.textContent = newTitle;\n  } else {\n    // No title given, so element is not necessary\n    docTitle.remove();\n  }\n  batchCmd.addSubCommand(new ChangeElementCommand(docTitle, {'#text': oldTitle}));\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Returns the editor's namespace URL, optionally adding it to the root element.\n* @function module:svgcanvas.SvgCanvas#getEditorNS\n* @param {boolean} [add] - Indicates whether or not to add the namespace value\n* @returns {string} The editor's namespace URL\n*/\nthis.getEditorNS = function (add) {\n  if (add) {\n    svgcontent.setAttribute('xmlns:se', NS.SE);\n  }\n  return NS.SE;\n};\n\n/**\n* Changes the document's dimensions to the given size.\n* @function module:svgcanvas.SvgCanvas#setResolution\n* @param {Float|\"fit\"} x - Number with the width of the new dimensions in user units.\n* Can also be the string \"fit\" to indicate \"fit to content\".\n* @param {Float} y - Number with the height of the new dimensions in user units.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Indicates if resolution change was successful.\n* It will fail on \"fit to content\" option with no content to fit to.\n*/\nthis.setResolution = function (x, y) {\n  const res = getResolution();\n  const {w, h} = res;\n  let batchCmd;\n\n  if (x === 'fit') {\n    // Get bounding box\n    const bbox = getStrokedBBoxDefaultVisible();\n\n    if (bbox) {\n      batchCmd = new BatchCommand('Fit Canvas to Content');\n      const visEls = getVisibleElements();\n      addToSelection(visEls);\n      const dx = [], dy = [];\n      $.each(visEls, function (i, item) {\n        dx.push(bbox.x * -1);\n        dy.push(bbox.y * -1);\n      });\n\n      const cmd = canvas.moveSelectedElements(dx, dy, true);\n      batchCmd.addSubCommand(cmd);\n      clearSelection();\n\n      x = Math.round(bbox.width);\n      y = Math.round(bbox.height);\n    } else {\n      return false;\n    }\n  }\n  if (x !== w || y !== h) {\n    if (!batchCmd) {\n      batchCmd = new BatchCommand('Change Image Dimensions');\n    }\n\n    x = convertToNum('width', x);\n    y = convertToNum('height', y);\n\n    svgcontent.setAttribute('width', x);\n    svgcontent.setAttribute('height', y);\n\n    this.contentW = x;\n    this.contentH = y;\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {width: w, height: h}));\n\n    svgcontent.setAttribute('viewBox', [0, 0, x / currentZoom, y / currentZoom].join(' '));\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {viewBox: ['0 0', w, h].join(' ')}));\n\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  }\n  return true;\n};\n\n/**\n* @typedef {module:jQueryAttr.Attributes} module:svgcanvas.ElementPositionInCanvas\n* @property {Float} x\n* @property {Float} y\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOffset\n* @returns {module:svgcanvas.ElementPositionInCanvas} An object with `x`, `y` values indicating the svgcontent element's\n* position in the editor's canvas.\n*/\nthis.getOffset = function () {\n  return $(svgcontent).attr(['x', 'y']);\n};\n\n/**\n * @typedef {PlainObject} module:svgcanvas.ZoomAndBBox\n * @property {Float} zoom\n * @property {module:utilities.BBoxObject} bbox\n */\n/**\n* Sets the zoom level on the canvas-side based on the given value.\n* @function module:svgcanvas.SvgCanvas#setBBoxZoom\n* @param {\"selection\"|\"canvas\"|\"content\"|\"layer\"|module:SVGEditor.BBoxObjectWithFactor} val - Bounding box object to zoom to or string indicating zoom option. Note: the object value type is defined in `svg-editor.js`\n* @param {Integer} editorW - The editor's workarea box's width\n* @param {Integer} editorH - The editor's workarea box's height\n* @returns {module:svgcanvas.ZoomAndBBox|undefined}\n*/\nthis.setBBoxZoom = function (val, editorW, editorH) {\n  let spacer = 0.85;\n  let bb;\n  const calcZoom = function (bb) {\n    if (!bb) { return false; }\n    const wZoom = Math.round((editorW / bb.width) * 100 * spacer) / 100;\n    const hZoom = Math.round((editorH / bb.height) * 100 * spacer) / 100;\n    const zoom = Math.min(wZoom, hZoom);\n    canvas.setZoom(zoom);\n    return {zoom, bbox: bb};\n  };\n\n  if (typeof val === 'object') {\n    bb = val;\n    if (bb.width === 0 || bb.height === 0) {\n      const newzoom = bb.zoom ? bb.zoom : currentZoom * bb.factor;\n      canvas.setZoom(newzoom);\n      return {zoom: currentZoom, bbox: bb};\n    }\n    return calcZoom(bb);\n  }\n\n  switch (val) {\n  case 'selection':\n    if (!selectedElements[0]) { return; }\n    const selectedElems = $.map(selectedElements, function (n) { if (n) { return n; } });\n    bb = getStrokedBBoxDefaultVisible(selectedElems);\n    break;\n  case 'canvas':\n    const res = getResolution();\n    spacer = 0.95;\n    bb = {width: res.w, height: res.h, x: 0, y: 0};\n    break;\n  case 'content':\n    bb = getStrokedBBoxDefaultVisible();\n    break;\n  case 'layer':\n    bb = getStrokedBBoxDefaultVisible(getVisibleElements(getCurrentDrawing().getCurrentLayer()));\n    break;\n  default:\n    return;\n  }\n  return calcZoom(bb);\n};\n\n/**\n* The zoom level has changed. Supplies the new zoom level as a number (not percentage).\n* @event module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @type {Float}\n*/\n/**\n* The bottom panel was updated\n* @event module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n* @type {PlainObject}\n* @property {boolean} nofill Indicates fill is disabled\n* @property {boolean} nostroke Indicates stroke is disabled\n*/\n/**\n* The element selection has changed (elements were added/removed from selection)\n* @event module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the newly selected elements\n* @property {Element|null} selectedElement The single selected element\n* @property {boolean} multiselected Indicates whether one or more elements were selected\n*/\n/**\n* Called when part of element is in process of changing, generally on\n* mousemove actions like rotate, move, etc.\n* @event module:svgcanvas.SvgCanvas#event:ext-elementTransition\n* @type {PlainObject}\n* @property {Element[]} elems Array of transitioning elements\n*/\n/**\n* One or more elements were changed\n* @event module:svgcanvas.SvgCanvas#event:ext-elementChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the affected elements\n*/\n/**\n* Invoked as soon as the locale is ready\n* @event module:svgcanvas.SvgCanvas#event:ext-langReady\n* @type {PlainObject}\n* @property {string} lang The two-letter language code\n* @property {module:SVGEditor.uiStrings} uiStrings\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n* The language was changed. Two-letter code of the new language.\n* @event module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @type {string}\n*/\n/**\n* Means for an extension to add locale data. The two-letter language code.\n* @event module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @type {PlainObject}\n* @property {string} lang\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n * Called when new image is created\n * @event module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n * @type {undefined}\n */\n/**\n * Called when sidepanel is resized or toggled\n * @event module:svgcanvas.SvgCanvas#event:ext-workareaResized\n * @type {undefined}\n*/\n/**\n * Called upon addition of the extension, or, if svgicons are set,\n * after the icons are ready when extension SVG icons have loaded.\n * @event module:svgcanvas.SvgCanvas#event:ext-callback\n * @type {undefined}\n*/\n\n/**\n* Sets the zoom to the given level.\n* @function module:svgcanvas.SvgCanvas#setZoom\n* @param {Float} zoomLevel - Float indicating the zoom level to change to\n* @fires module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @returns {undefined}\n*/\nthis.setZoom = function (zoomLevel) {\n  const res = getResolution();\n  svgcontent.setAttribute('viewBox', '0 0 ' + res.w / zoomLevel + ' ' + res.h / zoomLevel);\n  currentZoom = zoomLevel;\n  $.each(selectedElements, function (i, elem) {\n    if (!elem) { return; }\n    selectorManager.requestSelector(elem).resize();\n  });\n  pathActions.zoomChange();\n  runExtensions('zoomChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} */ zoomLevel);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMode\n* @returns {string} The current editor mode string\n*/\nthis.getMode = function () {\n  return currentMode;\n};\n\n/**\n* Sets the editor's mode to the given string.\n* @function module:svgcanvas.SvgCanvas#setMode\n* @param {string} name - String with the new mode to change to\n* @returns {undefined}\n*/\nthis.setMode = function (name) {\n  pathActions.clear(true);\n  textActions.clear();\n  curProperties = (selectedElements[0] && selectedElements[0].nodeName === 'text') ? curText : curShape;\n  currentMode = name;\n};\n\n/**\n* Group: Element Styling\n*/\n\n/**\n* @typedef {PlainObject} module:svgcanvas.PaintOptions\n* @property {\"solidColor\"} type\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getColor\n* @param {string} type\n* @returns {string|module:svgcanvas.PaintOptions|Float|module:jGraduate~Paint} The current fill/stroke option\n*/\nthis.getColor = function (type) {\n  return curProperties[type];\n};\n\n/**\n* Change the current stroke/fill color/gradient value.\n* @function module:svgcanvas.SvgCanvas#setColor\n* @param {string} type - String indicating fill or stroke\n* @param {string} val - The value to set the stroke attribute to\n* @param {boolean} preventUndo - Boolean indicating whether or not this should be an undoable option\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setColor = function (type, val, preventUndo) {\n  curShape[type] = val;\n  curProperties[type + '_paint'] = {type: 'solidColor'};\n  const elems = [];\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else {\n        if (type === 'fill') {\n          if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {\n            elems.push(elem);\n          }\n        } else {\n          elems.push(elem);\n        }\n      }\n    }\n  }\n  if (elems.length > 0) {\n    if (!preventUndo) {\n      changeSelectedAttribute(type, val, elems);\n      call('changed', elems);\n    } else {\n      changeSelectedAttributeNoUndo(type, val, elems);\n    }\n  }\n};\n\n/**\n* Apply the current gradient to selected element's fill or stroke.\n* @function module:svgcanvas.SvgCanvas#setGradient\n* @param {\"fill\"|\"stroke\"} type - String indicating \"fill\" or \"stroke\" to apply to an element\n* @returns {undefined}\n*/\nconst setGradient = this.setGradient = function (type) {\n  if (!curProperties[type + '_paint'] || curProperties[type + '_paint'].type === 'solidColor') { return; }\n  let grad = canvas[type + 'Grad'];\n  // find out if there is a duplicate gradient already in the defs\n  const duplicateGrad = findDuplicateGradient(grad);\n  const defs = findDefs();\n  // no duplicate found, so import gradient into defs\n  if (!duplicateGrad) {\n    // const origGrad = grad;\n    grad = defs.appendChild(svgdoc.importNode(grad, true));\n    // get next id and set it on the grad\n    grad.id = getNextId();\n  } else { // use existing gradient\n    grad = duplicateGrad;\n  }\n  canvas.setColor(type, 'url(#' + grad.id + ')');\n};\n\n/**\n* Check if exact gradient already exists.\n* @function module:svgcanvas~findDuplicateGradient\n* @param {SVGGradientElement} grad - The gradient DOM element to compare to others\n* @returns {SVGGradientElement} The existing gradient if found, `null` if not\n*/\nconst findDuplicateGradient = function (grad) {\n  const defs = findDefs();\n  const existingGrads = $(defs).find('linearGradient, radialGradient');\n  let i = existingGrads.length;\n  const radAttrs = ['r', 'cx', 'cy', 'fx', 'fy'];\n  while (i--) {\n    const og = existingGrads[i];\n    if (grad.tagName === 'linearGradient') {\n      if (grad.getAttribute('x1') !== og.getAttribute('x1') ||\n        grad.getAttribute('y1') !== og.getAttribute('y1') ||\n        grad.getAttribute('x2') !== og.getAttribute('x2') ||\n        grad.getAttribute('y2') !== og.getAttribute('y2')\n      ) {\n        continue;\n      }\n    } else {\n      const gradAttrs = $(grad).attr(radAttrs);\n      const ogAttrs = $(og).attr(radAttrs);\n\n      let diff = false;\n      $.each(radAttrs, function (i, attr) {\n        if (gradAttrs[attr] !== ogAttrs[attr]) { diff = true; }\n      });\n\n      if (diff) { continue; }\n    }\n\n    // else could be a duplicate, iterate through stops\n    const stops = grad.getElementsByTagNameNS(NS.SVG, 'stop');\n    const ostops = og.getElementsByTagNameNS(NS.SVG, 'stop');\n\n    if (stops.length !== ostops.length) {\n      continue;\n    }\n\n    let j = stops.length;\n    while (j--) {\n      const stop = stops[j];\n      const ostop = ostops[j];\n\n      if (stop.getAttribute('offset') !== ostop.getAttribute('offset') ||\n        stop.getAttribute('stop-opacity') !== ostop.getAttribute('stop-opacity') ||\n        stop.getAttribute('stop-color') !== ostop.getAttribute('stop-color')) {\n        break;\n      }\n    }\n\n    if (j === -1) {\n      return og;\n    }\n  } // for each gradient in defs\n\n  return null;\n};\n\n/**\n* Set a color/gradient to a fill/stroke.\n* @function module:svgcanvas.SvgCanvas#setPaint\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @param {module:jGraduate.jGraduatePaintOptions} paint - The jGraduate paint object to apply\n* @returns {undefined}\n*/\nthis.setPaint = function (type, paint) {\n  // make a copy\n  const p = new $.jGraduate.Paint(paint);\n  this.setPaintOpacity(type, p.alpha / 100, true);\n\n  // now set the current paint object\n  curProperties[type + '_paint'] = p;\n  switch (p.type) {\n  case 'solidColor':\n    this.setColor(type, p.solidColor !== 'none' ? '#' + p.solidColor : 'none');\n    break;\n  case 'linearGradient':\n  case 'radialGradient':\n    canvas[type + 'Grad'] = p[p.type];\n    setGradient(type);\n    break;\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setStrokePaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setStrokePaint = function (paint) {\n  this.setPaint('stroke', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setFillPaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setFillPaint = function (paint) {\n  this.setPaint('fill', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeWidth\n* @returns {Float|string} The current stroke-width value\n*/\nthis.getStrokeWidth = function () {\n  return curProperties.stroke_width;\n};\n\n/**\n* Sets the stroke width for the current selected elements.\n* When attempting to set a line's width to 0, this changes it to 1 instead.\n* @function module:svgcanvas.SvgCanvas#setStrokeWidth\n* @param {Float} val - A Float indicating the new stroke width value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeWidth = function (val) {\n  if (val === 0 && ['line', 'path'].includes(currentMode)) {\n    canvas.setStrokeWidth(1);\n    return;\n  }\n  curProperties.stroke_width = val;\n\n  const elems = [];\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute('stroke-width', val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* Set the given stroke-related attribute the given value for selected elements.\n* @function module:svgcanvas.SvgCanvas#setStrokeAttr\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the attribute value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeAttr = function (attr, val) {\n  curShape[attr.replace('-', '_')] = val;\n  const elems = [];\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, function (e) { if (e.nodeName !== 'g') { elems.push(e); } });\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute(attr, val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.StyleOptions\n* @property {string} fill\n* @property {Float} fill_opacity\n* @property {string} stroke\n* @property {Float} stroke_width\n* @property {string} stroke_dasharray\n* @property {string} stroke_linejoin\n* @property {string} stroke_linecap\n* @property {Float} stroke_opacity\n* @property {Float} opacity\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStyle\n* @returns {module:svgcanvas.StyleOptions} current style options\n*/\nthis.getStyle = function () {\n  return curShape;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOpacity\n* @returns {Float} the current opacity\n*/\nthis.getOpacity = getOpacity;\n\n/**\n* Sets the given opacity on the current selected elements.\n* @function module:svgcanvas.SvgCanvas#setOpacity\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setOpacity = function (val) {\n  curShape.opacity = val;\n  changeSelectedAttribute('opacity', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFillOpacity\n* @returns {Float} the current fill opacity\n*/\nthis.getFillOpacity = function () {\n  return curShape.fill_opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeOpacity\n* @returns {string} the current stroke opacity\n*/\nthis.getStrokeOpacity = function () {\n  return curShape.stroke_opacity;\n};\n\n/**\n* Sets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#setPaintOpacity\n* @param {string} type - String with \"fill\" or \"stroke\"\n* @param {Float} val - Float with the new opacity value\n* @param {boolean} preventUndo - Indicates whether or not this should be an undoable action\n* @returns {undefined}\n*/\nthis.setPaintOpacity = function (type, val, preventUndo) {\n  curShape[type + '_opacity'] = val;\n  if (!preventUndo) {\n    changeSelectedAttribute(type + '-opacity', val);\n  } else {\n    changeSelectedAttributeNoUndo(type + '-opacity', val);\n  }\n};\n\n/**\n* Gets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#getPaintOpacity\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @returns {Float} Fill/stroke opacity\n*/\nthis.getPaintOpacity = function (type) {\n  return type === 'fill' ? this.getFillOpacity() : this.getStrokeOpacity();\n};\n\n/**\n* Gets the `stdDeviation` blur value of the given element.\n* @function module:svgcanvas.SvgCanvas#getBlur\n* @param {Element} elem - The element to check the blur value for\n* @returns {string} stdDeviation blur attribute value\n*/\nthis.getBlur = function (elem) {\n  let val = 0;\n  // const elem = selectedElements[0];\n\n  if (elem) {\n    const filterUrl = elem.getAttribute('filter');\n    if (filterUrl) {\n      const blur = getElem(elem.id + '_blur');\n      if (blur) {\n        val = blur.firstChild.getAttribute('stdDeviation');\n      }\n    }\n  }\n  return val;\n};\n\n(function () {\nlet curCommand = null;\nlet filter = null;\nlet filterHidden = false;\n\n/**\n* Sets the `stdDeviation` blur value on the selected element without being undoable.\n* @function module:svgcanvas.SvgCanvas#setBlurNoUndo\n* @param {Float} val - The new `stdDeviation` value\n* @returns {undefined}\n*/\ncanvas.setBlurNoUndo = function (val) {\n  if (!filter) {\n    canvas.setBlur(val);\n    return;\n  }\n  if (val === 0) {\n    // Don't change the StdDev, as that will hide the element.\n    // Instead, just remove the value for \"filter\"\n    changeSelectedAttributeNoUndo('filter', '');\n    filterHidden = true;\n  } else {\n    const elem = selectedElements[0];\n    if (filterHidden) {\n      changeSelectedAttributeNoUndo('filter', 'url(#' + elem.id + '_blur)');\n    }\n    if (isWebkit()) {\n      console.log('e', elem);\n      elem.removeAttribute('filter');\n      elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');\n    }\n    changeSelectedAttributeNoUndo('stdDeviation', val, [filter.firstChild]);\n    canvas.setBlurOffsets(filter, val);\n  }\n};\n\nfunction finishChange () {\n  const bCmd = canvas.undoMgr.finishUndoableChange();\n  curCommand.addSubCommand(bCmd);\n  addCommandToHistory(curCommand);\n  curCommand = null;\n  filter = null;\n}\n\n/**\n* Sets the `x`, `y`, `width`, `height` values of the filter element in order to\n* make the blur not be clipped. Removes them if not neeeded.\n* @function module:svgcanvas.SvgCanvas#setBlurOffsets\n* @param {Element} filter - The filter DOM element to update\n* @param {Float} stdDev - The standard deviation value on which to base the offset size\n* @returns {undefined}\n*/\ncanvas.setBlurOffsets = function (filter, stdDev) {\n  if (stdDev > 3) {\n    // TODO: Create algorithm here where size is based on expected blur\n    assignAttributes(filter, {\n      x: '-50%',\n      y: '-50%',\n      width: '200%',\n      height: '200%'\n    }, 100);\n  } else {\n    // Removing these attributes hides text in Chrome (see Issue 579)\n    if (!isWebkit()) {\n      filter.removeAttribute('x');\n      filter.removeAttribute('y');\n      filter.removeAttribute('width');\n      filter.removeAttribute('height');\n    }\n  }\n};\n\n/**\n* Adds/updates the blur filter to the selected element.\n* @function module:svgcanvas.SvgCanvas#setBlur\n* @param {Float} val - Float with the new `stdDeviation` blur value\n* @param {boolean} complete - Whether or not the action should be completed (to add to the undo manager)\n* @returns {undefined}\n*/\ncanvas.setBlur = function (val, complete) {\n  if (curCommand) {\n    finishChange();\n    return;\n  }\n\n  // Looks for associated blur, creates one if not found\n  const elem = selectedElements[0];\n  const elemId = elem.id;\n  filter = getElem(elemId + '_blur');\n\n  val -= 0;\n\n  const batchCmd = new BatchCommand();\n\n  // Blur found!\n  if (filter) {\n    if (val === 0) {\n      filter = null;\n    }\n  } else {\n    // Not found, so create\n    const newblur = addSVGElementFromJson({element: 'feGaussianBlur',\n      attr: {\n        in: 'SourceGraphic',\n        stdDeviation: val\n      }\n    });\n\n    filter = addSVGElementFromJson({element: 'filter',\n      attr: {\n        id: elemId + '_blur'\n      }\n    });\n\n    filter.append(newblur);\n    findDefs().append(filter);\n\n    batchCmd.addSubCommand(new InsertElementCommand(filter));\n  }\n\n  const changes = {filter: elem.getAttribute('filter')};\n\n  if (val === 0) {\n    elem.removeAttribute('filter');\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    return;\n  }\n\n  changeSelectedAttribute('filter', 'url(#' + elemId + '_blur)');\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n  canvas.setBlurOffsets(filter, val);\n\n  curCommand = batchCmd;\n  canvas.undoMgr.beginUndoableChange('stdDeviation', [filter ? filter.firstChild : null]);\n  if (complete) {\n    canvas.setBlurNoUndo(val);\n    finishChange();\n  }\n};\n}());\n\n/**\n* Check whether selected element is bold or not.\n* @function module:svgcanvas.SvgCanvas#getBold\n* @returns {boolean} Indicates whether or not element is bold\n*/\nthis.getBold = function () {\n  // should only have one element selected\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    return (selected.getAttribute('font-weight') === 'bold');\n  }\n  return false;\n};\n\n/**\n* Make the selected element bold or normal.\n* @function module:svgcanvas.SvgCanvas#setBold\n* @param {boolean} b - Indicates bold (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setBold = function (b) {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Check whether selected element is in italics or not.\n* @function module:svgcanvas.SvgCanvas#getItalic\n* @returns {boolean} Indicates whether or not element is italic\n*/\nthis.getItalic = function () {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    return (selected.getAttribute('font-style') === 'italic');\n  }\n  return false;\n};\n\n/**\n* Make the selected element italic or normal.\n* @function module:svgcanvas.SvgCanvas#setItalic\n* @param {boolean} i - Indicates italic (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setItalic = function (i) {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'text' &&\n    selectedElements[1] == null) {\n    changeSelectedAttribute('font-style', i ? 'italic' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontFamily\n* @returns {string} The current font family\n*/\nthis.getFontFamily = function () {\n  return curText.font_family;\n};\n\n/**\n* Set the new font family.\n* @function module:svgcanvas.SvgCanvas#setFontFamily\n* @param {string} val - String with the new font family\n* @returns {undefined}\n*/\nthis.setFontFamily = function (val) {\n  curText.font_family = val;\n  changeSelectedAttribute('font-family', val);\n  if (selectedElements[0] && !selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Set the new font color.\n* @function module:svgcanvas.SvgCanvas#setFontColor\n* @param {string} val - String with the new font color\n* @returns {undefined}\n*/\nthis.setFontColor = function (val) {\n  curText.fill = val;\n  changeSelectedAttribute('fill', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontColor\n* @returns {string} The current font color\n*/\nthis.getFontColor = function () {\n  return curText.fill;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontSize\n* @returns {Float} The current font size\n*/\nthis.getFontSize = function () {\n  return curText.font_size;\n};\n\n/**\n* Applies the given font size to the selected element.\n* @function module:svgcanvas.SvgCanvas#setFontSize\n* @param {Float} val - Float with the new font size\n* @returns {undefined}\n*/\nthis.setFontSize = function (val) {\n  curText.font_size = val;\n  changeSelectedAttribute('font-size', val);\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getText\n* @returns {string} The current text (`textContent`) of the selected element\n*/\nthis.getText = function () {\n  const selected = selectedElements[0];\n  if (selected == null) { return ''; }\n  return selected.textContent;\n};\n\n/**\n* Updates the text element with the given string.\n* @function module:svgcanvas.SvgCanvas#setTextContent\n* @param {string} val - String with the new text\n* @returns {undefined}\n*/\nthis.setTextContent = function (val) {\n  changeSelectedAttribute('#text', val);\n  textActions.init(val);\n  textActions.setCursor();\n};\n\n/**\n* Sets the new image URL for the selected image element. Updates its size if\n* a new URL is given.\n* @function module:svgcanvas.SvgCanvas#setImageURL\n* @param {string} val - String with the image URL/path\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setImageURL = function (val) {\n  const elem = selectedElements[0];\n  if (!elem) { return; }\n\n  const attrs = $(elem).attr(['width', 'height']);\n  const setsize = (!attrs.width || !attrs.height);\n\n  const curHref = getHref(elem);\n\n  // Do nothing if no URL change or size change\n  if (curHref === val && !setsize) {\n    return;\n  }\n\n  const batchCmd = new BatchCommand('Change Image URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  $(new Image()).load(function () {\n    const changes = $(elem).attr(['width', 'height']);\n\n    $(elem).attr({\n      width: this.width,\n      height: this.height\n    });\n\n    selectorManager.requestSelector(elem).resize();\n\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    addCommandToHistory(batchCmd);\n    call('changed', [elem]);\n  }).attr('src', val);\n};\n\n/**\n* Sets the new link URL for the selected anchor element.\n* @function module:svgcanvas.SvgCanvas#setLinkURL\n* @param {string} val - String with the link URL/path\n* @returns {undefined}\n*/\nthis.setLinkURL = function (val) {\n  let elem = selectedElements[0];\n  if (!elem) { return; }\n  if (elem.tagName !== 'a') {\n    // See if parent is an anchor\n    const parentsA = $(elem).parents('a');\n    if (parentsA.length) {\n      elem = parentsA[0];\n    } else {\n      return;\n    }\n  }\n\n  const curHref = getHref(elem);\n\n  if (curHref === val) { return; }\n\n  const batchCmd = new BatchCommand('Change Link URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Sets the `rx` and `ry` values to the selected `rect` element\n* to change its corner radius.\n* @function module:svgcanvas.SvgCanvas#setRectRadius\n* @param {string|Float} val - The new radius\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRectRadius = function (val) {\n  const selected = selectedElements[0];\n  if (selected != null && selected.tagName === 'rect') {\n    const r = selected.getAttribute('rx');\n    if (r !== String(val)) {\n      selected.setAttribute('rx', val);\n      selected.setAttribute('ry', val);\n      addCommandToHistory(new ChangeElementCommand(selected, {rx: r, ry: r}, 'Radius'));\n      call('changed', [selected]);\n    }\n  }\n};\n\n/**\n* Wraps the selected element(s) in an anchor element or converts group to one.\n* @function module:svgcanvas.SvgCanvas#makeHyperlink\n* @param {string} url\n* @returns {undefined}\n*/\nthis.makeHyperlink = function (url) {\n  canvas.groupSelectedElements('a', url);\n\n  // TODO: If element is a single \"g\", convert to \"a\"\n  //  if (selectedElements.length > 1 && selectedElements[1]) {\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#removeHyperlink\n* @returns {undefined}\n*/\nthis.removeHyperlink = function () {\n  canvas.ungroupSelectedElement();\n};\n\n/**\n* Group: Element manipulation\n*/\n\n/**\n* Sets the new segment type to the selected segment(s).\n* @function module:svgcanvas.SvgCanvas#setSegType\n* @param {Integer} newType - New segment type. See {@link https://www.w3.org/TR/SVG/paths.html#InterfaceSVGPathSeg} for list\n* @returns {undefined}\n*/\nthis.setSegType = function (newType) {\n  pathActions.setSegType(newType);\n};\n\n/**\n* Convert selected element to a path, or get the BBox of an element-as-path.\n* @function module:svgcanvas.SvgCanvas#convertToPath\n* @todo (codedread): Remove the getBBox argument and split this function into two.\n* @param {Element} elem - The DOM element to be converted\n* @param {boolean} getBBox - Boolean on whether or not to only return the path's BBox\n* @returns {undefined|DOMRect|false|SVGPathElement|null} If the getBBox flag is true, the resulting path's bounding box object.\n* Otherwise the resulting path element is returned.\n*/\nthis.convertToPath = function (elem, getBBox) {\n  if (elem == null) {\n    const elems = selectedElements;\n    $.each(elems, function (i, elem) {\n      if (elem) { canvas.convertToPath(elem); }\n    });\n    return;\n  }\n  if (getBBox) {\n    return getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n  }\n  // TODO: Why is this applying attributes from curShape, then inside utilities.convertToPath it's pulling addition attributes from elem?\n  // TODO: If convertToPath is called with one elem, curShape and elem are probably the same; but calling with multiple is a bug or cool feature.\n  const attrs = {\n    fill: curShape.fill,\n    'fill-opacity': curShape.fill_opacity,\n    stroke: curShape.stroke,\n    'stroke-width': curShape.stroke_width,\n    'stroke-dasharray': curShape.stroke_dasharray,\n    'stroke-linejoin': curShape.stroke_linejoin,\n    'stroke-linecap': curShape.stroke_linecap,\n    'stroke-opacity': curShape.stroke_opacity,\n    opacity: curShape.opacity,\n    visibility: 'hidden'\n  };\n  return convertToPath(elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, history, addCommandToHistory);\n};\n\n/**\n* This function makes the changes to the elements. It does not add the change\n* to the history stack.\n* @param {string} attr - Attribute name\n* @param {string|Float} newValue - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttributeNoUndo = function (attr, newValue, elems) {\n  if (currentMode === 'pathedit') {\n    // Editing node\n    pathActions.moveNode(attr, newValue);\n  }\n  elems = elems || selectedElements;\n  let i = elems.length;\n  const noXYElems = ['g', 'polyline', 'path'];\n  const goodGAttrs = ['transform', 'opacity', 'filter'];\n\n  while (i--) {\n    let elem = elems[i];\n    if (elem == null) { continue; }\n\n    // Set x,y vals on elements that don't have them\n    if ((attr === 'x' || attr === 'y') && noXYElems.includes(elem.tagName)) {\n      const bbox = getStrokedBBoxDefaultVisible([elem]);\n      const diffX = attr === 'x' ? newValue - bbox.x : 0;\n      const diffY = attr === 'y' ? newValue - bbox.y : 0;\n      canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);\n      continue;\n    }\n\n    // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky\n    // TODO: FIXME: This doesn't seem right. Where's the body of this if statement?\n    if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}\n    let oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);\n    if (oldval == null) { oldval = ''; }\n    if (oldval !== String(newValue)) {\n      if (attr === '#text') {\n        // const oldW = utilsGetBBox(elem).width;\n        elem.textContent = newValue;\n\n        // FF bug occurs on on rotated elements\n        if ((/rotate/).test(elem.getAttribute('transform'))) {\n          elem = ffClone(elem);\n        }\n        // Hoped to solve the issue of moving text with text-anchor=\"start\",\n        // but this doesn't actually fix it. Hopefully on the right track, though. -Fyrd\n        // const box = getBBox(elem), left = box.x, top = box.y, {width, height} = box,\n        //   dx = width - oldW, dy = 0;\n        // const angle = getRotationAngle(elem, true);\n        // if (angle) {\n        //   const r = Math.sqrt(dx * dx + dy * dy);\n        //   const theta = Math.atan2(dy, dx) - angle;\n        //   dx = r * Math.cos(theta);\n        //   dy = r * Math.sin(theta);\n        //\n        //   elem.setAttribute('x', elem.getAttribute('x') - dx);\n        //   elem.setAttribute('y', elem.getAttribute('y') - dy);\n        // }\n      } else if (attr === '#href') {\n        setHref(elem, newValue);\n      } else { elem.setAttribute(attr, newValue); }\n\n      // Go into \"select\" mode for text changes\n      // NOTE: Important that this happens AFTER elem.setAttribute() or else attributes like\n      // font-size can get reset to their old value, ultimately by svgEditor.updateContextPanel(),\n      // after calling textActions.toSelectMode() below\n      if (currentMode === 'textedit' && attr !== '#text' && elem.textContent.length) {\n        textActions.toSelectMode(elem);\n      }\n\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(elem);\n      // }\n\n      // Use the Firefox ffClone hack for text elements with gradients or\n      // where other text attributes are changed.\n      if (isGecko() && elem.nodeName === 'text' && (/rotate/).test(elem.getAttribute('transform'))) {\n        if (String(newValue).startsWith('url') || (['font-size', 'font-family', 'x', 'y'].includes(attr) && elem.textContent)) {\n          elem = ffClone(elem);\n        }\n      }\n      // Timeout needed for Opera & Firefox\n      // codedread: it is now possible for this function to be called with elements\n      // that are not in the selectedElements array, we need to only request a\n      // selector if the element is in that array\n      if (selectedElements.includes(elem)) {\n        setTimeout(function () {\n          // Due to element replacement, this element may no longer\n          // be part of the DOM\n          if (!elem.parentNode) { return; }\n          selectorManager.requestSelector(elem).resize();\n        }, 0);\n      }\n      // if this element was rotated, and we changed the position of this element\n      // we need to update the rotational transform attribute\n      const angle = getRotationAngle(elem);\n      if (angle !== 0 && attr !== 'transform') {\n        const tlist = getTransformList(elem);\n        let n = tlist.numberOfItems;\n        while (n--) {\n          const xform = tlist.getItem(n);\n          if (xform.type === 4) {\n            // remove old rotate\n            tlist.removeItem(n);\n\n            const box = utilsGetBBox(elem);\n            const center = transformPoint(box.x + box.width / 2, box.y + box.height / 2, transformListToTransform(tlist).matrix);\n            const cx = center.x,\n              cy = center.y;\n            const newrot = svgroot.createSVGTransform();\n            newrot.setRotate(angle, cx, cy);\n            tlist.insertItemBefore(newrot, n);\n            break;\n          }\n        }\n      }\n    } // if oldValue != newValue\n  } // for each elem\n};\n\n/**\n* Change the given/selected element and add the original value to the history stack.\n* If you want to change all `selectedElements`, ignore the `elems` argument.\n* If you want to change only a subset of `selectedElements`, then send the\n* subset to this function in the `elems` argument.\n* @function module:svgcanvas.SvgCanvas#changeSelectedAttribute\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttribute = this.changeSelectedAttribute = function (attr, val, elems) {\n  elems = elems || selectedElements;\n  canvas.undoMgr.beginUndoableChange(attr, elems);\n  // const i = elems.length;\n\n  changeSelectedAttributeNoUndo(attr, val, elems);\n\n  const batchCmd = canvas.undoMgr.finishUndoableChange();\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack.\n* @function module:svgcanvas.SvgCanvas#deleteSelectedElements\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.deleteSelectedElements = function () {\n  const batchCmd = new BatchCommand('Delete Elements');\n  const len = selectedElements.length;\n  const selectedCopy = []; // selectedElements is being deleted\n\n  for (let i = 0; i < len; ++i) {\n    const selected = selectedElements[i];\n    if (selected == null) { break; }\n\n    let parent = selected.parentNode;\n    let t = selected;\n\n    // this will unselect the element and remove the selectedOutline\n    selectorManager.releaseSelector(t);\n\n    // Remove the path if present.\n    pathModule.removePath_(t.id);\n\n    // Get the parent if it's a single-child anchor\n    if (parent.tagName === 'a' && parent.childNodes.length === 1) {\n      t = parent;\n      parent = parent.parentNode;\n    }\n\n    const {nextSibling} = t;\n    const elem = parent.removeChild(t);\n    selectedCopy.push(selected); // for the copy\n    batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n  }\n  selectedElements = [];\n\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n  call('changed', selectedCopy);\n  clearSelection();\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack. Remembers removed elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#cutSelectedElements\n* @returns {undefined}\n*/\nthis.cutSelectedElements = function () {\n  canvas.copySelectedElements();\n  canvas.deleteSelectedElements();\n};\n\n/**\n* Remembers the current selected elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#copySelectedElements\n* @returns {undefined}\n*/\nthis.copySelectedElements = function () {\n  localStorage.setItem('svgedit_clipboard', JSON.stringify(\n    selectedElements.map(function (x) { return getJsonFromSvgElement(x); })\n  ));\n\n  $('#cmenu_canvas').enableContextMenuItems('#paste,#paste_in_place');\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#pasteElements\n* @param {\"in_place\"|\"point\"|undefined} type\n* @param {Integer|undefined} x Expected if type is \"point\"\n* @param {Integer|undefined} y Expected if type is \"point\"\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @fires module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n* @returns {undefined}\n*/\nthis.pasteElements = function (type, x, y) {\n  let clipb = JSON.parse(localStorage.getItem('svgedit_clipboard'));\n  let len = clipb.length;\n  if (!len) { return; }\n\n  const pasted = [];\n  const batchCmd = new BatchCommand('Paste elements');\n  // const drawing = getCurrentDrawing();\n  /**\n  * @typedef {PlainObject.<string, string>} module:svgcanvas.ChangedIDs\n  */\n  /**\n   * @type {module:svgcanvas.ChangedIDs}\n   */\n  const changedIDs = {};\n\n  // Recursively replace IDs and record the changes\n  function checkIDs (elem) {\n    if (elem.attr && elem.attr.id) {\n      changedIDs[elem.attr.id] = getNextId();\n      elem.attr.id = changedIDs[elem.attr.id];\n    }\n    if (elem.children) elem.children.forEach(checkIDs);\n  }\n  clipb.forEach(checkIDs);\n\n  // Give extensions like the connector extension a chance to reflect new IDs and remove invalid elements\n  /**\n  * Triggered when `pasteElements` is called from a paste action (context menu or key)\n  * @event module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n  * @type {PlainObject}\n  * @property {module:svgcanvas.SVGAsJSON[]} elems\n  * @property {module:svgcanvas.ChangedIDs} changes Maps past ID (on attribute) to current ID\n  */\n  runExtensions(\n    'IDsUpdated',\n    /** @type {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} */\n    {elems: clipb, changes: changedIDs},\n    true\n  ).forEach(function (extChanges) {\n    if (!extChanges || !('remove' in extChanges)) return;\n\n    extChanges.remove.forEach(function (removeID) {\n      clipb = clipb.filter(function (clipBoardItem) {\n        return clipBoardItem.attr.id !== removeID;\n      });\n    });\n  });\n\n  // Move elements to lastClickPoint\n  while (len--) {\n    const elem = clipb[len];\n    if (!elem) { continue; }\n\n    const copy = addSVGElementFromJson(elem);\n    pasted.push(copy);\n    batchCmd.addSubCommand(new InsertElementCommand(copy));\n\n    restoreRefElems(copy);\n  }\n\n  selectOnly(pasted);\n\n  if (type !== 'in_place') {\n    let ctrX, ctrY;\n\n    if (!type) {\n      ctrX = lastClickPoint.x;\n      ctrY = lastClickPoint.y;\n    } else if (type === 'point') {\n      ctrX = x;\n      ctrY = y;\n    }\n\n    const bbox = getStrokedBBoxDefaultVisible(pasted);\n    const cx = ctrX - (bbox.x + bbox.width / 2),\n      cy = ctrY - (bbox.y + bbox.height / 2),\n      dx = [],\n      dy = [];\n\n    $.each(pasted, function (i, item) {\n      dx.push(cx);\n      dy.push(cy);\n    });\n\n    const cmd = canvas.moveSelectedElements(dx, dy, false);\n    if (cmd) batchCmd.addSubCommand(cmd);\n  }\n\n  addCommandToHistory(batchCmd);\n  call('changed', pasted);\n};\n\n/**\n* Wraps all the selected elements in a group (`g`) element.\n* @function module:svgcanvas.SvgCanvas#groupSelectedElements\n* @param {\"a\"|\"g\"} [type=\"g\"] - type of element to group into, defaults to `<g>`\n* @param {string} [urlArg]\n* @returns {undefined}\n*/\nthis.groupSelectedElements = function (type, urlArg) {\n  if (!type) { type = 'g'; }\n  let cmdStr = '';\n  let url;\n\n  switch (type) {\n  case 'a': {\n    cmdStr = 'Make hyperlink';\n    url = urlArg || '';\n    break;\n  } default: {\n    type = 'g';\n    cmdStr = 'Group Elements';\n    break;\n  }\n  }\n\n  const batchCmd = new BatchCommand(cmdStr);\n\n  // create and insert the group element\n  const g = addSVGElementFromJson({\n    element: type,\n    attr: {\n      id: getNextId()\n    }\n  });\n  if (type === 'a') {\n    setHref(g, url);\n  }\n  batchCmd.addSubCommand(new InsertElementCommand(g));\n\n  // now move all children into the group\n  let i = selectedElements.length;\n  while (i--) {\n    let elem = selectedElements[i];\n    if (elem == null) { continue; }\n\n    if (elem.parentNode.tagName === 'a' && elem.parentNode.childNodes.length === 1) {\n      elem = elem.parentNode;\n    }\n\n    const oldNextSibling = elem.nextSibling;\n    const oldParent = elem.parentNode;\n    g.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n  }\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n  // update selection\n  selectOnly([g], true);\n};\n\n/**\n* Pushes all appropriate parent group properties down to its children, then\n* removes them from the group.\n* @function module:svgcanvas.SvgCanvas#pushGroupProperties\n* @param {SVGAElement|SVGGElement} g\n* @param {boolean} undoable\n* @returns {undefined}\n*/\nconst pushGroupProperties = this.pushGroupProperties = function (g, undoable) {\n  const children = g.childNodes;\n  const len = children.length;\n  const xform = g.getAttribute('transform');\n\n  const glist = getTransformList(g);\n  const m = transformListToTransform(glist).matrix;\n\n  const batchCmd = new BatchCommand('Push group properties');\n\n  // TODO: get all fill/stroke properties from the group that we are about to destroy\n  // \"fill\", \"fill-opacity\", \"fill-rule\", \"stroke\", \"stroke-dasharray\", \"stroke-dashoffset\",\n  // \"stroke-linecap\", \"stroke-linejoin\", \"stroke-miterlimit\", \"stroke-opacity\",\n  // \"stroke-width\"\n  // and then for each child, if they do not have the attribute (or the value is 'inherit')\n  // then set the child's attribute\n\n  const gangle = getRotationAngle(g);\n\n  const gattrs = $(g).attr(['filter', 'opacity']);\n  let gfilter, gblur, changes;\n  const drawing = getCurrentDrawing();\n\n  for (let i = 0; i < len; i++) {\n    const elem = children[i];\n\n    if (elem.nodeType !== 1) { continue; }\n\n    if (gattrs.opacity !== null && gattrs.opacity !== 1) {\n      // const c_opac = elem.getAttribute('opacity') || 1;\n      const newOpac = Math.round((elem.getAttribute('opacity') || 1) * gattrs.opacity * 100) / 100;\n      changeSelectedAttribute('opacity', newOpac, [elem]);\n    }\n\n    if (gattrs.filter) {\n      let cblur = this.getBlur(elem);\n      const origCblur = cblur;\n      if (!gblur) { gblur = this.getBlur(g); }\n      if (cblur) {\n        // Is this formula correct?\n        cblur = Number(gblur) + Number(cblur);\n      } else if (cblur === 0) {\n        cblur = gblur;\n      }\n\n      // If child has no current filter, get group's filter or clone it.\n      if (!origCblur) {\n        // Set group's filter to use first child's ID\n        if (!gfilter) {\n          gfilter = getRefElem(gattrs.filter);\n        } else {\n          // Clone the group's filter\n          gfilter = drawing.copyElem(gfilter);\n          findDefs().append(gfilter);\n        }\n      } else {\n        gfilter = getRefElem(elem.getAttribute('filter'));\n      }\n\n      // Change this in future for different filters\n      const suffix = (gfilter.firstChild.tagName === 'feGaussianBlur') ? 'blur' : 'filter';\n      gfilter.id = elem.id + '_' + suffix;\n      changeSelectedAttribute('filter', 'url(#' + gfilter.id + ')', [elem]);\n\n      // Update blur value\n      if (cblur) {\n        changeSelectedAttribute('stdDeviation', cblur, [gfilter.firstChild]);\n        canvas.setBlurOffsets(gfilter, cblur);\n      }\n    }\n\n    let chtlist = getTransformList(elem);\n\n    // Don't process gradient transforms\n    if (elem.tagName.includes('Gradient')) { chtlist = null; }\n\n    // Hopefully not a problem to add this. Necessary for elements like <desc/>\n    if (!chtlist) { continue; }\n\n    // Apparently <defs> can get get a transformlist, but we don't want it to have one!\n    if (elem.tagName === 'defs') { continue; }\n\n    if (glist.numberOfItems) {\n      // TODO: if the group's transform is just a rotate, we can always transfer the\n      // rotate() down to the children (collapsing consecutive rotates and factoring\n      // out any translates)\n      if (gangle && glist.numberOfItems === 1) {\n        // [Rg] [Rc] [Mc]\n        // we want [Tr] [Rc2] [Mc] where:\n        //  - [Rc2] is at the child's current center but has the\n        // sum of the group and child's rotation angles\n        //  - [Tr] is the equivalent translation that this child\n        // undergoes if the group wasn't there\n\n        // [Tr] = [Rg] [Rc] [Rc2_inv]\n\n        // get group's rotation matrix (Rg)\n        const rgm = glist.getItem(0).matrix;\n\n        // get child's rotation matrix (Rc)\n        let rcm = svgroot.createSVGMatrix();\n        const cangle = getRotationAngle(elem);\n        if (cangle) {\n          rcm = chtlist.getItem(0).matrix;\n        }\n\n        // get child's old center of rotation\n        const cbox = utilsGetBBox(elem);\n        const ceqm = transformListToTransform(chtlist).matrix;\n        const coldc = transformPoint(cbox.x + cbox.width / 2, cbox.y + cbox.height / 2, ceqm);\n\n        // sum group and child's angles\n        const sangle = gangle + cangle;\n\n        // get child's rotation at the old center (Rc2_inv)\n        const r2 = svgroot.createSVGTransform();\n        r2.setRotate(sangle, coldc.x, coldc.y);\n\n        // calculate equivalent translate\n        const trm = matrixMultiply(rgm, rcm, r2.matrix.inverse());\n\n        // set up tlist\n        if (cangle) {\n          chtlist.removeItem(0);\n        }\n\n        if (sangle) {\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(r2, 0);\n          } else {\n            chtlist.appendItem(r2);\n          }\n        }\n\n        if (trm.e || trm.f) {\n          const tr = svgroot.createSVGTransform();\n          tr.setTranslate(trm.e, trm.f);\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(tr, 0);\n          } else {\n            chtlist.appendItem(tr);\n          }\n        }\n      } else { // more complicated than just a rotate\n        // transfer the group's transform down to each child and then\n        // call recalculateDimensions()\n        const oldxform = elem.getAttribute('transform');\n        changes = {};\n        changes.transform = oldxform || '';\n\n        const newxform = svgroot.createSVGTransform();\n\n        // [ gm ] [ chm ] = [ chm ] [ gm' ]\n        // [ gm' ] = [ chmInv ] [ gm ] [ chm ]\n        const chm = transformListToTransform(chtlist).matrix,\n          chmInv = chm.inverse();\n        const gm = matrixMultiply(chmInv, m, chm);\n        newxform.setMatrix(gm);\n        chtlist.appendItem(newxform);\n      }\n      const cmd = recalculateDimensions(elem);\n      if (cmd) { batchCmd.addSubCommand(cmd); }\n    }\n  }\n\n  // remove transform and make it undo-able\n  if (xform) {\n    changes = {};\n    changes.transform = xform;\n    g.setAttribute('transform', '');\n    g.removeAttribute('transform');\n    batchCmd.addSubCommand(new ChangeElementCommand(g, changes));\n  }\n\n  if (undoable && !batchCmd.isEmpty()) {\n    return batchCmd;\n  }\n};\n\n/**\n* Unwraps all the elements in a selected group (`g`) element. This requires\n* significant recalculations to apply group's transforms, etc. to its children.\n* @function module:svgcanvas.SvgCanvas#ungroupSelectedElement\n* @returns {undefined}\n*/\nthis.ungroupSelectedElement = function () {\n  let g = selectedElements[0];\n  if (!g) {\n    return;\n  }\n  if ($(g).data('gsvg') || $(g).data('symbol')) {\n    // Is svg, so actually convert to group\n    convertToGroup(g);\n    return;\n  }\n  if (g.tagName === 'use') {\n    // Somehow doesn't have data set, so retrieve\n    const symbol = getElem(getHref(g).substr(1));\n    $(g).data('symbol', symbol).data('ref', symbol);\n    convertToGroup(g);\n    return;\n  }\n  const parentsA = $(g).parents('a');\n  if (parentsA.length) {\n    g = parentsA[0];\n  }\n\n  // Look for parent \"a\"\n  if (g.tagName === 'g' || g.tagName === 'a') {\n    const batchCmd = new BatchCommand('Ungroup Elements');\n    const cmd = pushGroupProperties(g, true);\n    if (cmd) { batchCmd.addSubCommand(cmd); }\n\n    const parent = g.parentNode;\n    const anchor = g.nextSibling;\n    const children = new Array(g.childNodes.length);\n\n    let i = 0;\n    while (g.firstChild) {\n      let elem = g.firstChild;\n      const oldNextSibling = elem.nextSibling;\n      const oldParent = elem.parentNode;\n\n      // Remove child title elements\n      if (elem.tagName === 'title') {\n        const {nextSibling} = elem;\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, oldParent));\n        elem.remove();\n        continue;\n      }\n\n      children[i++] = elem = parent.insertBefore(elem, anchor);\n      batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n    }\n\n    // remove the group from the selection\n    clearSelection();\n\n    // delete the group element (but make undo-able)\n    const gNextSibling = g.nextSibling;\n    g = parent.removeChild(g);\n    batchCmd.addSubCommand(new RemoveElementCommand(g, gNextSibling, parent));\n\n    if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n    // update selection\n    addToSelection(children);\n  }\n};\n\n/**\n* Repositions the selected element to the bottom in the DOM to appear on top of\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToTopSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToTopSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (selected != null) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    t = t.parentNode.appendChild(t);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'top'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Repositions the selected element to the top in the DOM to appear under\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToBottomSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToBottomSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (selected != null) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    let {firstChild} = t.parentNode;\n    if (firstChild.tagName === 'title') {\n      firstChild = firstChild.nextSibling;\n    }\n    // This can probably be removed, as the defs should not ever apppear\n    // inside a layer group\n    if (firstChild.tagName === 'defs') {\n      firstChild = firstChild.nextSibling;\n    }\n    t = t.parentNode.insertBefore(t, firstChild);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'bottom'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Moves the select element up or down the stack, based on the visibly\n* intersecting elements.\n* @function module:svgcanvas.SvgCanvas#moveUpDownSelected\n* @param {\"Up\"|\"Down\"} dir - String that's either 'Up' or 'Down'\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveUpDownSelected = function (dir) {\n  const selected = selectedElements[0];\n  if (!selected) { return; }\n\n  curBBoxes = [];\n  let closest, foundCur;\n  // jQuery sorts this list\n  const list = $(getIntersectionList(getStrokedBBoxDefaultVisible([selected]))).toArray();\n  if (dir === 'Down') { list.reverse(); }\n\n  $.each(list, function () {\n    if (!foundCur) {\n      if (this === selected) {\n        foundCur = true;\n      }\n      return;\n    }\n    closest = this;\n    return false;\n  });\n  if (!closest) { return; }\n\n  const t = selected;\n  const oldParent = t.parentNode;\n  const oldNextSibling = t.nextSibling;\n  $(closest)[dir === 'Down' ? 'before' : 'after'](t);\n  // If the element actually moved position, add the command and fire the changed\n  // event handler.\n  if (oldNextSibling !== t.nextSibling) {\n    addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'Move ' + dir));\n    call('changed', [t]);\n  }\n};\n\n/**\n* Moves selected elements on the X/Y axis.\n* @function module:svgcanvas.SvgCanvas#moveSelectedElements\n* @param {Float} dx - Float with the distance to move on the x-axis\n* @param {Float} dy - Float with the distance to move on the y-axis\n* @param {boolean} undoable - Boolean indicating whether or not the action should be undoable\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {BatchCommand} Batch command for the move\n*/\nthis.moveSelectedElements = function (dx, dy, undoable) {\n  // if undoable is not sent, default to true\n  // if single values, scale them to the zoom\n  if (dx.constructor !== Array) {\n    dx /= currentZoom;\n    dy /= currentZoom;\n  }\n  undoable = undoable || true;\n  const batchCmd = new BatchCommand('position');\n  let i = selectedElements.length;\n  while (i--) {\n    const selected = selectedElements[i];\n    if (selected != null) {\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(selected);\n      // }\n      // const b = {};\n      // for (const j in selectedBBoxes[i]) b[j] = selectedBBoxes[i][j];\n      // selectedBBoxes[i] = b;\n\n      const xform = svgroot.createSVGTransform();\n      const tlist = getTransformList(selected);\n\n      // dx and dy could be arrays\n      if (dx.constructor === Array) {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx[0];\n        //   selectedBBoxes[0].y += dy[0];\n        // }\n        xform.setTranslate(dx[i], dy[i]);\n      } else {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx;\n        //   selectedBBoxes[0].y += dy;\n        // }\n        xform.setTranslate(dx, dy);\n      }\n\n      if (tlist.numberOfItems) {\n        tlist.insertItemBefore(xform, 0);\n      } else {\n        tlist.appendItem(xform);\n      }\n\n      const cmd = recalculateDimensions(selected);\n      if (cmd) {\n        batchCmd.addSubCommand(cmd);\n      }\n\n      selectorManager.requestSelector(selected).resize();\n    }\n  }\n  if (!batchCmd.isEmpty()) {\n    if (undoable) {\n      addCommandToHistory(batchCmd);\n    }\n    call('changed', selectedElements);\n    return batchCmd;\n  }\n};\n\n/**\n* Create deep DOM copies (clones) of all selected elements and move them slightly\n* from their originals.\n* @function module:svgcanvas.SvgCanvas#cloneSelectedElements\n* @param {Float} x Float with the distance to move on the x-axis\n* @param {Float} y Float with the distance to move on the y-axis\n* @returns {undefined}\n*/\nthis.cloneSelectedElements = function (x, y) {\n  let i, elem;\n  const batchCmd = new BatchCommand('Clone Elements');\n  // find all the elements selected (stop at first null)\n  const len = selectedElements.length;\n  function sortfunction (a, b) {\n    return ($(b).index() - $(a).index()); // causes an array to be sorted numerically and ascending\n  }\n  selectedElements.sort(sortfunction);\n  for (i = 0; i < len; ++i) {\n    elem = selectedElements[i];\n    if (elem == null) { break; }\n  }\n  // use slice to quickly get the subset of elements we need\n  const copiedElements = selectedElements.slice(0, i);\n  this.clearSelection(true);\n  // note that we loop in the reverse way because of the way elements are added\n  // to the selectedElements array (top-first)\n  const drawing = getCurrentDrawing();\n  i = copiedElements.length;\n  while (i--) {\n    // clone each element and replace it within copiedElements\n    elem = copiedElements[i] = drawing.copyElem(copiedElements[i]);\n    (currentGroup || drawing.getCurrentLayer()).append(elem);\n    batchCmd.addSubCommand(new InsertElementCommand(elem));\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addToSelection(copiedElements.reverse()); // Need to reverse for correct selection-adding\n    this.moveSelectedElements(x, y, false);\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Aligns selected elements.\n* @function module:svgcanvas.SvgCanvas#alignSelectedElements\n* @param {string} type - String with single character indicating the alignment type\n* @param {\"selected\"|\"largest\"|\"smallest\"|\"page\"} relativeTo\n* @returns {undefined}\n*/\nthis.alignSelectedElements = function (type, relativeTo) {\n  const bboxes = []; // angles = [];\n  const len = selectedElements.length;\n  if (!len) { return; }\n  let minx = Number.MAX_VALUE, maxx = Number.MIN_VALUE,\n    miny = Number.MAX_VALUE, maxy = Number.MIN_VALUE;\n  let curwidth = Number.MIN_VALUE, curheight = Number.MIN_VALUE;\n  for (let i = 0; i < len; ++i) {\n    if (selectedElements[i] == null) { break; }\n    const elem = selectedElements[i];\n    bboxes[i] = getStrokedBBoxDefaultVisible([elem]);\n\n    // now bbox is axis-aligned and handles rotation\n    switch (relativeTo) {\n    case 'smallest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth > bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight > bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    case 'largest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth < bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight < bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    default: // 'selected'\n      if (bboxes[i].x < minx) { minx = bboxes[i].x; }\n      if (bboxes[i].y < miny) { miny = bboxes[i].y; }\n      if (bboxes[i].x + bboxes[i].width > maxx) { maxx = bboxes[i].x + bboxes[i].width; }\n      if (bboxes[i].y + bboxes[i].height > maxy) { maxy = bboxes[i].y + bboxes[i].height; }\n      break;\n    }\n  } // loop for each element to find the bbox and adjust min/max\n\n  if (relativeTo === 'page') {\n    minx = 0;\n    miny = 0;\n    maxx = canvas.contentW;\n    maxy = canvas.contentH;\n  }\n\n  const dx = new Array(len);\n  const dy = new Array(len);\n  for (let i = 0; i < len; ++i) {\n    if (selectedElements[i] == null) { break; }\n    // const elem = selectedElements[i];\n    const bbox = bboxes[i];\n    dx[i] = 0;\n    dy[i] = 0;\n    switch (type) {\n    case 'l': // left (horizontal)\n      dx[i] = minx - bbox.x;\n      break;\n    case 'c': // center (horizontal)\n      dx[i] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);\n      break;\n    case 'r': // right (horizontal)\n      dx[i] = maxx - (bbox.x + bbox.width);\n      break;\n    case 't': // top (vertical)\n      dy[i] = miny - bbox.y;\n      break;\n    case 'm': // middle (vertical)\n      dy[i] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);\n      break;\n    case 'b': // bottom (vertical)\n      dy[i] = maxy - (bbox.y + bbox.height);\n      break;\n    }\n  }\n  this.moveSelectedElements(dx, dy);\n};\n\n/**\n* Group: Additional editor tools\n*/\n\n/**\n* @name module:svgcanvas.SvgCanvas#contentW\n* @type {Float}\n*/\nthis.contentW = getResolution().w;\n/**\n* @name module:svgcanvas.SvgCanvas#contentH\n* @type {Float}\n*/\nthis.contentH = getResolution().h;\n\n/**\n* @typedef {PlainObject} module:svgcanvas.CanvasInfo\n* @property {Float} x - The canvas' new x coordinate\n* @property {Float} y - The canvas' new y coordinate\n* @property {string} oldX - The canvas' old x coordinate\n* @property {string} oldY - The canvas' old y coordinate\n* @property {Float} d_x - The x position difference\n* @property {Float} d_y - The y position difference\n*/\n\n/**\n* Updates the editor canvas width/height/position after a zoom has occurred.\n* @function module:svgcanvas.SvgCanvas#updateCanvas\n* @param {Float} w - Float with the new width\n* @param {Float} h - Float with the new height\n* @fires module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n* @returns {module:svgcanvas.CanvasInfo}\n*/\nthis.updateCanvas = function (w, h) {\n  svgroot.setAttribute('width', w);\n  svgroot.setAttribute('height', h);\n  const bg = $('#canvasBackground')[0];\n  const oldX = svgcontent.getAttribute('x');\n  const oldY = svgcontent.getAttribute('y');\n  const x = ((w - this.contentW * currentZoom) / 2);\n  const y = ((h - this.contentH * currentZoom) / 2);\n\n  assignAttributes(svgcontent, {\n    width: this.contentW * currentZoom,\n    height: this.contentH * currentZoom,\n    x,\n    y,\n    viewBox: '0 0 ' + this.contentW + ' ' + this.contentH\n  });\n\n  assignAttributes(bg, {\n    width: svgcontent.getAttribute('width'),\n    height: svgcontent.getAttribute('height'),\n    x,\n    y\n  });\n\n  const bgImg = getElem('background_image');\n  if (bgImg) {\n    assignAttributes(bgImg, {\n      width: '100%',\n      height: '100%'\n    });\n  }\n\n  selectorManager.selectorParentGroup.setAttribute('transform', 'translate(' + x + ',' + y + ')');\n\n  /**\n  * Invoked upon updates to the canvas.\n  * @event module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n  * @type {PlainObject}\n  * @property {Integer} new_x\n  * @property {Integer} new_y\n  * @property {string} old_x (Of Integer)\n  * @property {string} old_y (Of Integer)\n  * @property {Integer} d_x\n  * @property {Integer} d_y\n  */\n  runExtensions(\n    'canvasUpdated',\n    /**\n     * @type {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated}\n     */\n    {new_x: x, new_y: y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY}\n  );\n  return {x, y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY};\n};\n\n/**\n* Set the background of the editor (NOT the actual document).\n* @function module:svgcanvas.SvgCanvas#setBackground\n* @param {string} color - String with fill color to apply\n* @param {string} url - URL or path to image to use\n* @returns {undefined}\n*/\nthis.setBackground = function (color, url) {\n  const bg = getElem('canvasBackground');\n  const border = $(bg).find('rect')[0];\n  let bgImg = getElem('background_image');\n  border.setAttribute('fill', color);\n  if (url) {\n    if (!bgImg) {\n      bgImg = svgdoc.createElementNS(NS.SVG, 'image');\n      assignAttributes(bgImg, {\n        id: 'background_image',\n        width: '100%',\n        height: '100%',\n        preserveAspectRatio: 'xMinYMin',\n        style: 'pointer-events:none'\n      });\n    }\n    setHref(bgImg, url);\n    bg.append(bgImg);\n  } else if (bgImg) {\n    bgImg.remove();\n  }\n};\n\n/**\n* Select the next/previous element within the current layer.\n* @function module:svgcanvas.SvgCanvas#cycleElement\n* @param {boolean} next - true = next and false = previous element\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nthis.cycleElement = function (next) {\n  let num;\n  const curElem = selectedElements[0];\n  let elem = false;\n  const allElems = getVisibleElements(currentGroup || getCurrentDrawing().getCurrentLayer());\n  if (!allElems.length) { return; }\n  if (curElem == null) {\n    num = next ? allElems.length - 1 : 0;\n    elem = allElems[num];\n  } else {\n    let i = allElems.length;\n    while (i--) {\n      if (allElems[i] === curElem) {\n        num = next ? i - 1 : i + 1;\n        if (num >= allElems.length) {\n          num = 0;\n        } else if (num < 0) {\n          num = allElems.length - 1;\n        }\n        elem = allElems[num];\n        break;\n      }\n    }\n  }\n  selectOnly([elem], true);\n  call('selected', selectedElements);\n};\n\nthis.clear();\n\n/**\n* @interface module:svgcanvas.PrivateMethods\n* @type {PlainObject}\n* @property {module:svgcanvas~addCommandToHistory} addCommandToHistory\n* @property {module:history.HistoryCommand} BatchCommand\n* @property {module:history.HistoryCommand} ChangeElementCommand\n* @property {module:utilities.decode64} decode64\n* @property {module:utilities.dropXMLInteralSubset} dropXMLInteralSubset\n* @property {module:utilities.encode64} encode64\n* @property {module:svgcanvas~ffClone} ffClone\n* @property {module:svgcanvas~findDuplicateGradient} findDuplicateGradient\n* @property {module:utilities.getPathBBox} getPathBBox\n* @property {module:units.getTypeMap} getTypeMap\n* @property {module:draw.identifyLayers} identifyLayers\n* @property {module:history.HistoryCommand} InsertElementCommand\n* @property {module:browser.isChrome} isChrome\n* @property {module:math.isIdentity} isIdentity\n* @property {module:browser.isIE} isIE\n* @property {module:svgcanvas~logMatrix} logMatrix\n* @property {module:history.HistoryCommand} MoveElementCommand\n* @property {module:namespaces.NS} NS\n* @property {module:utilities.preventClickDefault} preventClickDefault\n* @property {module:history.HistoryCommand} RemoveElementCommand\n* @property {module:SVGTransformList.SVGEditTransformList} SVGEditTransformList\n* @property {module:utilities.text2xml} text2xml\n* @property {module:math.transformBox} transformBox\n* @property {module:math.transformPoint} transformPoint\n* @property {module:utilities.walkTree} walkTree\n*/\n/**\n* @deprecated getPrivateMethods\n* Since all methods are/should be public somehow, this function should be removed;\n*  we might require `import` in place of this in the future once ES6 Modules\n*  widespread\n\n* Being able to access private methods publicly seems wrong somehow,\n* but currently appears to be the best way to allow testing and provide\n* access to them to plugins.\n* @function module:svgcanvas.SvgCanvas#getPrivateMethods\n* @returns {module:svgcanvas.PrivateMethods}\n*/\nthis.getPrivateMethods = function () {\n  const obj = {\n    addCommandToHistory,\n    BatchCommand,\n    ChangeElementCommand,\n    decode64,\n    dropXMLInteralSubset,\n    encode64,\n    ffClone,\n    findDefs,\n    findDuplicateGradient,\n    getElem,\n    getPathBBox,\n    getTypeMap,\n    getUrlFromAttr,\n    identifyLayers: draw.identifyLayers,\n    InsertElementCommand,\n    isChrome,\n    isIdentity,\n    isIE,\n    logMatrix,\n    MoveElementCommand,\n    NS,\n    preventClickDefault,\n    RemoveElementCommand,\n    SVGEditTransformList,\n    text2xml,\n    transformBox,\n    transformPoint,\n    walkTree\n  };\n  return obj;\n};\n  } // End constructor\n} // End class\n\nexport default SvgCanvas;\n","/**\n * jGraduate 0.4\n *\n * jQuery Plugin for a gradient picker\n *\n * @module jGraduate\n * @copyright 2010 Jeff Schiller {@link http://blog.codedread.com/}, 2010 Alexis Deveria {@link http://a.deveria.com/}\n *\n * @license Apache-2.0\n * @example\n * // The Paint object is described below.\n * $.jGraduate.Paint() // constructs a 'none' color\n * @example $.jGraduate.Paint({copy: o}) // creates a copy of the paint o\n * @example $.jGraduate.Paint({hex: '#rrggbb'}) // creates a solid color paint with hex = \"#rrggbb\"\n * @example $.jGraduate.Paint({linearGradient: o, a: 50}) // creates a linear gradient paint with opacity=0.5\n * @example $.jGraduate.Paint({radialGradient: o, a: 7}) // creates a radial gradient paint with opacity=0.07\n * @example $.jGraduate.Paint({hex: '#rrggbb', linearGradient: o}) // throws an exception?\n *\n*/\n\n/**\n  * The jQuery namespace.\n  * @external jQuery\n*/\n/**\n * The jQuery plugin namespace.\n * @namespace {PlainObject} fn\n * @memberof external:jQuery\n * @see {@link http://learn.jquery.com/plugins/|jQuery Plugins}\n */\n\nconst ns = {\n  svg: 'http://www.w3.org/2000/svg',\n  xlink: 'http://www.w3.org/1999/xlink'\n};\n\nif (!window.console) {\n  window.console = {\n    log (str) {},\n    dir (str) {}\n  };\n}\n\n/**\n* Adds {@link external:jQuery.jGraduate.Paint},\n* {@link external:jQuery.fn.jGraduateDefaults},\n* {@link external:jQuery.fn.jGraduate}.\n* @function module:jGraduate.jGraduate\n* @param {external:jQuery} $ The jQuery instance to wrap\n* @returns {external:jQuery}\n*/\nexport default function ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jGraduate.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.jGraduatePaintOptions\n  * @param {Float} [alpha]\n  * @param {module:jGraduate~Paint} [copy] Copy paint object\n  * @param {SVGLinearGradientElement} [linearGradient]\n  * @param {SVGRadialGradientElement} [radialGradient]\n  * @param {string} [solidColor]\n  */\n\n  /**\n  * @memberof module:jGraduate~\n  */\n  class Paint {\n    /**\n     * @param {module:jGraduate.jGraduatePaintOptions} [opt]\n    */\n    constructor (opt) {\n      const options = opt || {};\n      this.alpha = isNaN(options.alpha) ? 100 : options.alpha;\n      // copy paint object\n      if (options.copy) {\n        /**\n         * @name module:jGraduate~Paint#type\n         * @type {\"none\"|\"solidColor\"|\"linearGradient\"|\"radialGradient\"}\n         */\n        this.type = options.copy.type;\n        /**\n         * Represents opacity (0-100)\n         * @name module:jGraduate~Paint#alpha\n         * @type {Float}\n         */\n        this.alpha = options.copy.alpha;\n        /**\n         * Represents #RRGGBB hex of color\n         * @name module:jGraduate~Paint#solidColor\n         * @type {string}\n         */\n        this.solidColor = null;\n        /**\n         * @name module:jGraduate~Paint#linearGradient\n         * @type {SVGLinearGradientElement}\n         */\n        this.linearGradient = null;\n        /**\n         * @name module:jGraduate~Paint#radialGradient\n         * @type {SVGRadialGradientElement}\n         */\n        this.radialGradient = null;\n\n        switch (this.type) {\n        case 'none':\n          break;\n        case 'solidColor':\n          this.solidColor = options.copy.solidColor;\n          break;\n        case 'linearGradient':\n          this.linearGradient = options.copy.linearGradient.cloneNode(true);\n          break;\n        case 'radialGradient':\n          this.radialGradient = options.copy.radialGradient.cloneNode(true);\n          break;\n        }\n      // create linear gradient paint\n      } else if (options.linearGradient) {\n        this.type = 'linearGradient';\n        this.solidColor = null;\n        this.radialGradient = null;\n        this.linearGradient = options.linearGradient.cloneNode(true);\n      // create linear gradient paint\n      } else if (options.radialGradient) {\n        this.type = 'radialGradient';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = options.radialGradient.cloneNode(true);\n      // create solid color paint\n      } else if (options.solidColor) {\n        this.type = 'solidColor';\n        this.solidColor = options.solidColor;\n      // create empty paint\n      } else {\n        this.type = 'none';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = null;\n      }\n    }\n  }\n  /**\n  * @namespace {PlainObject} jGraduate\n  * @memberof external:jQuery\n  */\n  $.jGraduate = /** @lends external:jQuery.jGraduate */ {\n    /**\n    * @class external:jQuery.jGraduate.Paint\n    * @see module:jGraduate~Paint\n    */\n    Paint\n  };\n\n  // JSDoc doesn't show this as belonging to our `module:jGraduate.Options` type,\n  //   so we use `@see`\n  /**\n  * @namespace {module:jGraduate.Options} jGraduateDefaults\n  * @memberof external:jQuery.fn\n  */\n  $.fn.jGraduateDefaults = /** @lends external:jQuery.fn.jGraduateDefaults */ {\n    /**\n    * Creates an object with a 'none' color\n    * @type {external:jQuery.jGraduate.Paint}\n    * @see module:jGraduate.Options\n    */\n    paint: new $.jGraduate.Paint(),\n    /**\n    * @namespace\n    */\n    window: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      pickerTitle: 'Drag markers to pick a paint'\n    },\n    /**\n    * @namespace\n    */\n    images: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      clientPath: 'images/'\n    },\n    /**\n    * @type {string}\n    * @see module:jGraduate.Options\n    */\n    newstop: 'inverse' // same, inverse, black, white\n  };\n\n  const isGecko = navigator.userAgent.includes('Gecko/');\n\n  function setAttrs (elem, attrs) {\n    if (isGecko) {\n      for (const aname in attrs) elem.setAttribute(aname, attrs[aname]);\n    } else {\n      for (const aname in attrs) {\n        const val = attrs[aname], prop = elem[aname];\n        if (prop && prop.constructor === 'SVGLength') {\n          prop.baseVal.value = val;\n        } else {\n          elem.setAttribute(aname, val);\n        }\n      }\n    }\n  }\n\n  function mkElem (name, attrs, newparent) {\n    const elem = document.createElementNS(ns.svg, name);\n    setAttrs(elem, attrs);\n    if (newparent) {\n      newparent.append(elem);\n    }\n    return elem;\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.ColorOpac Object may have one or both values\n  * @property {string} [color] #Hex color\n  * @property {Float} [opac] 0-1\n  */\n  /**\n  * @typedef {PlainObject} module:jGraduate.Options\n  * @property {module:jGraduate~Paint} [paint] A Paint object object describing the paint to display initially; defaults to a new instance without options (defaults to opaque white)\n  * @property {external:Window} [window]\n  * @property {string} [window.pickerTitle='Drag markers to pick a paint']\n  * @property {PlainObject} [images]\n  * @property {string} [images.clientPath='images/']\n  * @property {\"same\"|\"inverse\"|\"black\"|\"white\"|module:jGraduate.ColorOpac} [newstop=\"inverse\"]\n  */\n\n  /**\n  * @callback external:jQuery.fn.jGraduate.OkCallback\n  * @param {external:jQuery.jGraduate.Paint} paint\n  * @returns {undefined}\n  */\n  /**\n  * @callback external:jQuery.fn.jGraduate.CancelCallback\n  * @returns {undefined}\n  */\n\n  /**\n  * @function external:jQuery.fn.jGraduate\n  * @param {module:jGraduate.Options} [options]\n  * @param {external:jQuery.fn.jGraduate.OkCallback} [okCallback] Called with a Paint object when Ok is pressed\n  * @param {external:jQuery.fn.jGraduate.CancelCallback} [cancelCallback] Called with no arguments when Cancel is pressed\n  * @returns {external:jQuery}\n  */\n  $.fn.jGraduate = function (options, okCallback, cancelCallback) {\n    return this.each(function () {\n      const $this = $(this),\n        $settings = $.extend(true, {}, $.fn.jGraduateDefaults, options || {}),\n        id = $this.attr('id'),\n        idref = '#' + $this.attr('id') + ' ';\n\n      if (!idref) {\n        alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');\n        return;\n      }\n\n      const okClicked = function () {\n        switch ($this.paint.type) {\n        case 'radialGradient':\n          $this.paint.linearGradient = null;\n          break;\n        case 'linearGradient':\n          $this.paint.radialGradient = null;\n          break;\n        case 'solidColor':\n          $this.paint.radialGradient = $this.paint.linearGradient = null;\n          break;\n        }\n        typeof $this.okCallback === 'function' && $this.okCallback($this.paint);\n        $this.hide();\n      };\n      const cancelClicked = function () {\n        typeof $this.cancelCallback === 'function' && $this.cancelCallback();\n        $this.hide();\n      };\n\n      $.extend(true, $this, { // public properties, methods, and callbacks\n        // make a copy of the incoming paint\n        paint: new $.jGraduate.Paint({copy: $settings.paint}),\n        okCallback: typeof okCallback === 'function' ? okCallback : null,\n        cancelCallback: typeof cancelCallback === 'function' ? cancelCallback : null\n      });\n\n      let // pos = $this.position(),\n        color = null;\n      const $win = $(window);\n\n      if ($this.paint.type === 'none') {\n        $this.paint = new $.jGraduate.Paint({solidColor: 'ffffff'});\n      }\n\n      $this.addClass('jGraduate_Picker');\n      $this.html(\n        '<ul class=\"jGraduate_tabs\">' +\n          '<li class=\"jGraduate_tab_color jGraduate_tab_current\" data-type=\"col\">Solid Color</li>' +\n          '<li class=\"jGraduate_tab_lingrad\" data-type=\"lg\">Linear Gradient</li>' +\n          '<li class=\"jGraduate_tab_radgrad\" data-type=\"rg\">Radial Gradient</li>' +\n        '</ul>' +\n        '<div class=\"jGraduate_colPick\"></div>' +\n        '<div class=\"jGraduate_gradPick\"></div>' +\n        '<div class=\"jGraduate_LightBox\"></div>' +\n        '<div id=\"' + id + '_jGraduate_stopPicker\" class=\"jGraduate_stopPicker\"></div>'\n      );\n      const colPicker = $(idref + '> .jGraduate_colPick');\n      const gradPicker = $(idref + '> .jGraduate_gradPick');\n\n      gradPicker.html(\n        '<div id=\"' + id + '_jGraduate_Swatch\" class=\"jGraduate_Swatch\">' +\n          '<h2 class=\"jGraduate_Title\">' + $settings.window.pickerTitle + '</h2>' +\n          '<div id=\"' + id + '_jGraduate_GradContainer\" class=\"jGraduate_GradContainer\"></div>' +\n          '<div id=\"' + id + '_jGraduate_StopSlider\" class=\"jGraduate_StopSlider\"></div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_lg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Begin Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x1\" size=\"3\" title=\"Enter starting x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y1\" size=\"3\" title=\"Enter starting y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">End Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x2\" size=\"3\" title=\"Enter ending x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y2\" size=\"3\" title=\"Enter ending y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_rg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Center Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Focal Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>Match center: <input type=\"checkbox\" checked=\"checked\" id=\"' + id + '_jGraduate_match_ctr\"/></label><br/>' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_StopSection jGraduate_SpreadMethod\">' +\n          '<label class=\"jGraduate_Form_Heading\">Spread method</label>' +\n          '<div class=\"jGraduate_Form_Section\">' +\n            '<select class=\"jGraduate_spreadMethod\">' +\n              '<option value=pad selected>Pad</option>' +\n              '<option value=reflect>Reflect</option>' +\n              '<option value=repeat>Repeat</option>' +\n            '</select>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form\">' +\n          '<div class=\"jGraduate_Slider jGraduate_RadiusField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Radius:</label>' +\n            '<div id=\"' + id + '_jGraduate_Radius\" class=\"jGraduate_SliderBar jGraduate_Radius\" title=\"Click to set radius\">' +\n              '<img id=\"' + id + '_jGraduate_RadiusArrows\" class=\"jGraduate_RadiusArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_RadiusInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_EllipField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Ellip:</label>' +\n            '<div id=\"' + id + '_jGraduate_Ellip\" class=\"jGraduate_SliderBar jGraduate_Ellip\" title=\"Click to set Ellip\">' +\n              '<img id=\"' + id + '_jGraduate_EllipArrows\" class=\"jGraduate_EllipArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_EllipInput\" size=\"3\" value=\"0\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_AngleField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Angle:</label>' +\n            '<div id=\"' + id + '_jGraduate_Angle\" class=\"jGraduate_SliderBar jGraduate_Angle\" title=\"Click to set Angle\">' +\n              '<img id=\"' + id + '_jGraduate_AngleArrows\" class=\"jGraduate_AngleArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_AngleInput\" size=\"3\" value=\"0\"/>deg</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_OpacField\">' +\n            '<label class=\"prelabel\">Opac:</label>' +\n            '<div id=\"' + id + '_jGraduate_Opac\" class=\"jGraduate_SliderBar jGraduate_Opac\" title=\"Click to set Opac\">' +\n              '<img id=\"' + id + '_jGraduate_OpacArrows\" class=\"jGraduate_OpacArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_OpacInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_OkCancel\">' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Ok\" class=\"jGraduate_Ok\" value=\"OK\"/>' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Cancel\" class=\"jGraduate_Cancel\" value=\"Cancel\"/>' +\n        '</div>');\n\n      // --------------\n      // Set up all the SVG elements (the gradient, stops and rectangle)\n      const MAX = 256,\n        MARGINX = 0,\n        MARGINY = 0,\n        // STOP_RADIUS = 15 / 2,\n        SIZEX = MAX - 2 * MARGINX,\n        SIZEY = MAX - 2 * MARGINY;\n\n      const attrInput = {};\n\n      const SLIDERW = 145;\n      $('.jGraduate_SliderBar').width(SLIDERW);\n\n      const container = $('#' + id + '_jGraduate_GradContainer')[0];\n\n      const svg = mkElem('svg', {\n        id: id + '_jgraduate_svg',\n        width: MAX,\n        height: MAX,\n        xmlns: ns.svg\n      }, container);\n\n      // This wasn't working as designed\n      // let curType;\n      // curType = curType || $this.paint.type;\n\n      // if we are sent a gradient, import it\n      let curType = $this.paint.type;\n\n      let grad = $this.paint[curType];\n      let curGradient = grad;\n\n      const gradalpha = $this.paint.alpha;\n\n      const isSolid = curType === 'solidColor';\n\n      // Make any missing gradients\n      switch (curType) {\n      case 'solidColor':\n        // fall through\n      case 'linearGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_lg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('radialGradient', {\n          id: id + '_rg_jgraduate_grad'\n        }, svg);\n        if (curType === 'linearGradient') { break; }\n        // fall through\n      case 'radialGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_rg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('linearGradient', {\n          id: id + '_lg_jgraduate_grad'\n        }, svg);\n      }\n\n      let stopGroup; // eslint-disable-line prefer-const\n      if (isSolid) {\n        grad = curGradient = $('#' + id + '_lg_jgraduate_grad')[0];\n        color = $this.paint[curType];\n        mkStop(0, '#' + color, 1);\n\n        const type = typeof $settings.newstop;\n\n        if (type === 'string') {\n          switch ($settings.newstop) {\n          case 'same':\n            mkStop(1, '#' + color, 1);\n            break;\n\n          case 'inverse':\n            // Invert current color for second stop\n            let inverted = '';\n            for (let i = 0; i < 6; i += 2) {\n              // const ch = color.substr(i, 2);\n              let inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);\n              if (inv.length < 2) inv = 0 + inv;\n              inverted += inv;\n            }\n            mkStop(1, '#' + inverted, 1);\n            break;\n\n          case 'white':\n            mkStop(1, '#ffffff', 1);\n            break;\n\n          case 'black':\n            mkStop(1, '#000000', 1);\n            break;\n          }\n        } else if (type === 'object') {\n          const opac = ('opac' in $settings.newstop) ? $settings.newstop.opac : 1;\n          mkStop(1, ($settings.newstop.color || '#' + color), opac);\n        }\n      }\n\n      const x1 = parseFloat(grad.getAttribute('x1') || 0.0),\n        y1 = parseFloat(grad.getAttribute('y1') || 0.0),\n        x2 = parseFloat(grad.getAttribute('x2') || 1.0),\n        y2 = parseFloat(grad.getAttribute('y2') || 0.0);\n\n      const cx = parseFloat(grad.getAttribute('cx') || 0.5),\n        cy = parseFloat(grad.getAttribute('cy') || 0.5),\n        fx = parseFloat(grad.getAttribute('fx') || cx),\n        fy = parseFloat(grad.getAttribute('fy') || cy);\n\n      const previewRect = mkElem('rect', {\n        id: id + '_jgraduate_rect',\n        x: MARGINX,\n        y: MARGINY,\n        width: SIZEX,\n        height: SIZEY,\n        fill: 'url(#' + id + '_jgraduate_grad)',\n        'fill-opacity': gradalpha / 100\n      }, svg);\n\n      // stop visuals created here\n      const beginCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_lg_field',\n        title: 'Begin Stop'\n      }).text(1).css({\n        top: y1 * MAX,\n        left: x1 * MAX\n      }).data('coord', 'start').appendTo(container);\n\n      const endCoord = beginCoord.clone().text(2).css({\n        top: y2 * MAX,\n        left: x2 * MAX\n      }).attr('title', 'End stop').data('coord', 'end').appendTo(container);\n\n      const centerCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_rg_field',\n        title: 'Center stop'\n      }).text('C').css({\n        top: cy * MAX,\n        left: cx * MAX\n      }).data('coord', 'center').appendTo(container);\n\n      const focusCoord = centerCoord.clone().text('F').css({\n        top: fy * MAX,\n        left: fx * MAX,\n        display: 'none'\n      }).attr('title', 'Focus point').data('coord', 'focus').appendTo(container);\n\n      focusCoord[0].id = id + '_jGraduate_focusCoord';\n\n      // const coords = $(idref + ' .grad_coord');\n\n      // $(container).hover(function () {\n      //   coords.animate({\n      //     opacity: 1\n      //   }, 500);\n      // }, function () {\n      //   coords.animate({\n      //     opacity: .2\n      //   }, 500);\n      // });\n\n      let showFocus;\n      $.each(['x1', 'y1', 'x2', 'y2', 'cx', 'cy', 'fx', 'fy'], function (i, attr) {\n        const isRadial = isNaN(attr[1]);\n\n        let attrval = curGradient.getAttribute(attr);\n        if (!attrval) {\n          // Set defaults\n          if (isRadial) {\n            // For radial points\n            attrval = '0.5';\n          } else {\n            // Only x2 is 1\n            attrval = attr === 'x2' ? '1.0' : '0.0';\n          }\n        }\n\n        attrInput[attr] = $('#' + id + '_jGraduate_' + attr)\n          .val(attrval)\n          .change(function () {\n            // TODO: Support values < 0 and > 1 (zoomable preview?)\n            if (isNaN(parseFloat(this.value)) || this.value < 0) {\n              this.value = 0.0;\n            } else if (this.value > 1) {\n              this.value = 1.0;\n            }\n\n            if (!(attr[0] === 'f' && !showFocus)) {\n              if ((isRadial && curType === 'radialGradient') || (!isRadial && curType === 'linearGradient')) {\n                curGradient.setAttribute(attr, this.value);\n              }\n            }\n\n            const $elem = isRadial\n              ? attr[0] === 'c' ? centerCoord : focusCoord\n              : attr[1] === '1' ? beginCoord : endCoord;\n\n            const cssName = attr.includes('x') ? 'left' : 'top';\n\n            $elem.css(cssName, this.value * MAX);\n          }).change();\n      });\n\n      function mkStop (n, color, opac, sel, stopElem) {\n        const stop = stopElem || mkElem('stop', {'stop-color': color, 'stop-opacity': opac, offset: n}, curGradient);\n        if (stopElem) {\n          color = stopElem.getAttribute('stop-color');\n          opac = stopElem.getAttribute('stop-opacity');\n          n = stopElem.getAttribute('offset');\n        } else {\n          curGradient.append(stop);\n        }\n        if (opac === null) opac = 1;\n\n        const pickerD = 'M-6.2,0.9c3.6-4,6.7-4.3,6.7-12.4c-0.2,7.9,3.1,8.8,6.5,12.4c3.5,3.8,2.9,9.6,0,12.3c-3.1,2.8-10.4,2.7-13.2,0C-9.6,9.9-9.4,4.4-6.2,0.9z';\n\n        const pathbg = mkElem('path', {\n          d: pickerD,\n          fill: 'url(#jGraduate_trans)',\n          transform: 'translate(' + (10 + n * MAX) + ', 26)'\n        }, stopGroup);\n\n        const path = mkElem('path', {\n          d: pickerD,\n          fill: color,\n          'fill-opacity': opac,\n          transform: 'translate(' + (10 + n * MAX) + ', 26)',\n          stroke: '#000',\n          'stroke-width': 1.5\n        }, stopGroup);\n\n        $(path).mousedown(function (e) {\n          selectStop(this);\n          drag = curStop;\n          $win.mousemove(dragColor).mouseup(remDrags);\n          stopOffset = stopMakerDiv.offset();\n          e.preventDefault();\n          return false;\n        }).data('stop', stop).data('bg', pathbg).dblclick(function () {\n          $('div.jGraduate_LightBox').show();\n          const colorhandle = this;\n          let stopOpacity = +stop.getAttribute('stop-opacity') || 1;\n          let stopColor = stop.getAttribute('stop-color') || 1;\n          let thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);\n          while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n          color = stopColor.substr(1) + thisAlpha;\n          $('#' + id + '_jGraduate_stopPicker').css({left: 100, bottom: 15}).jPicker({\n            window: {title: 'Pick the start color and opacity for the gradient'},\n            images: {clientPath: $settings.images.clientPath},\n            color: {active: color, alphaSupport: true}\n          }, function (color, arg2) {\n            stopColor = color.val('hex') ? ('#' + color.val('hex')) : 'none';\n            stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;\n            colorhandle.setAttribute('fill', stopColor);\n            colorhandle.setAttribute('fill-opacity', stopOpacity);\n            stop.setAttribute('stop-color', stopColor);\n            stop.setAttribute('stop-opacity', stopOpacity);\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          }, null, function () {\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          });\n        });\n\n        $(curGradient).find('stop').each(function () {\n          const curS = $(this);\n          if (+this.getAttribute('offset') > n) {\n            if (!color) {\n              const newcolor = this.getAttribute('stop-color');\n              const newopac = this.getAttribute('stop-opacity');\n              stop.setAttribute('stop-color', newcolor);\n              path.setAttribute('fill', newcolor);\n              stop.setAttribute('stop-opacity', newopac === null ? 1 : newopac);\n              path.setAttribute('fill-opacity', newopac === null ? 1 : newopac);\n            }\n            curS.before(stop);\n            return false;\n          }\n        });\n        if (sel) selectStop(path);\n        return stop;\n      }\n\n      function remStop () {\n        delStop.setAttribute('display', 'none');\n        const path = $(curStop);\n        const stop = path.data('stop');\n        const bg = path.data('bg');\n        $([curStop, stop, bg]).remove();\n      }\n\n      const stopMakerDiv = $('#' + id + '_jGraduate_StopSlider');\n\n      let stops, curStop, drag;\n\n      const delStop = mkElem('path', {\n        d: 'm9.75,-6l-19.5,19.5m0,-19.5l19.5,19.5',\n        fill: 'none',\n        stroke: '#D00',\n        'stroke-width': 5,\n        display: 'none'\n      }, undefined); // stopMakerSVG);\n\n      function selectStop (item) {\n        if (curStop) curStop.setAttribute('stroke', '#000');\n        item.setAttribute('stroke', 'blue');\n        curStop = item;\n        curStop.parentNode.append(curStop);\n        //   stops = $('stop');\n        //   opac_select.val(curStop.attr('fill-opacity') || 1);\n        //   root.append(delStop);\n      }\n\n      let stopOffset;\n\n      function remDrags () {\n        $win.unbind('mousemove', dragColor);\n        if (delStop.getAttribute('display') !== 'none') {\n          remStop();\n        }\n        drag = null;\n      }\n\n      let scaleX = 1, scaleY = 1, angle = 0;\n\n      let cX = cx;\n      let cY = cy;\n      function xform () {\n        const rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';\n        if (scaleX === 1 && scaleY === 1) {\n          curGradient.removeAttribute('gradientTransform');\n          // $('#ang').addClass('dis');\n        } else {\n          const x = -cX * (scaleX - 1);\n          const y = -cY * (scaleY - 1);\n          curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')');\n          // $('#ang').removeClass('dis');\n        }\n      }\n\n      function dragColor (evt) {\n        let x = evt.pageX - stopOffset.left;\n        const y = evt.pageY - stopOffset.top;\n        x = x < 10\n          ? 10\n          : x > MAX + 10\n            ? MAX + 10\n            : x;\n\n        const xfStr = 'translate(' + x + ', 26)';\n        if (y < -60 || y > 130) {\n          delStop.setAttribute('display', 'block');\n          delStop.setAttribute('transform', xfStr);\n        } else {\n          delStop.setAttribute('display', 'none');\n        }\n\n        drag.setAttribute('transform', xfStr);\n        $.data(drag, 'bg').setAttribute('transform', xfStr);\n        const stop = $.data(drag, 'stop');\n        const sX = (x - 10) / MAX;\n\n        stop.setAttribute('offset', sX);\n\n        let last = 0;\n        $(curGradient).find('stop').each(function (i) {\n          const cur = this.getAttribute('offset');\n          const t = $(this);\n          if (cur < last) {\n            t.prev().before(t);\n            stops = $(curGradient).find('stop');\n          }\n          last = cur;\n        });\n      }\n\n      const stopMakerSVG = mkElem('svg', {\n        width: '100%',\n        height: 45\n      }, stopMakerDiv[0]);\n\n      const transPattern = mkElem('pattern', {\n        width: 16,\n        height: 16,\n        patternUnits: 'userSpaceOnUse',\n        id: 'jGraduate_trans'\n      }, stopMakerSVG);\n\n      const transImg = mkElem('image', {\n        width: 16,\n        height: 16\n      }, transPattern);\n\n      const bgImage = $settings.images.clientPath + 'map-opacity.png';\n\n      transImg.setAttributeNS(ns.xlink, 'xlink:href', bgImage);\n\n      $(stopMakerSVG).click(function (evt) {\n        stopOffset = stopMakerDiv.offset();\n        const {target} = evt;\n        if (target.tagName === 'path') return;\n        let x = evt.pageX - stopOffset.left - 8;\n        x = x < 10 ? 10 : x > MAX + 10 ? MAX + 10 : x;\n        mkStop(x / MAX, 0, 0, true);\n        evt.stopPropagation();\n      });\n\n      $(stopMakerSVG).mouseover(function () {\n        stopMakerSVG.append(delStop);\n      });\n\n      stopGroup = mkElem('g', {}, stopMakerSVG);\n\n      mkElem('line', {\n        x1: 10,\n        y1: 15,\n        x2: MAX + 10,\n        y2: 15,\n        'stroke-width': 2,\n        stroke: '#000'\n      }, stopMakerSVG);\n\n      const spreadMethodOpt = gradPicker.find('.jGraduate_spreadMethod').change(function () {\n        curGradient.setAttribute('spreadMethod', $(this).val());\n      });\n\n      // handle dragging the stop around the swatch\n      let draggingCoord = null;\n\n      const onCoordDrag = function (evt) {\n        let x = evt.pageX - offset.left;\n        let y = evt.pageY - offset.top;\n\n        // clamp stop to the swatch\n        x = x < 0 ? 0 : x > MAX ? MAX : x;\n        y = y < 0 ? 0 : y > MAX ? MAX : y;\n\n        draggingCoord.css('left', x).css('top', y);\n\n        // calculate stop offset\n        const fracx = x / SIZEX;\n        const fracy = y / SIZEY;\n\n        const type = draggingCoord.data('coord');\n        const grad = curGradient;\n\n        switch (type) {\n        case 'start':\n          attrInput.x1.val(fracx);\n          attrInput.y1.val(fracy);\n          grad.setAttribute('x1', fracx);\n          grad.setAttribute('y1', fracy);\n          break;\n        case 'end':\n          attrInput.x2.val(fracx);\n          attrInput.y2.val(fracy);\n          grad.setAttribute('x2', fracx);\n          grad.setAttribute('y2', fracy);\n          break;\n        case 'center':\n          attrInput.cx.val(fracx);\n          attrInput.cy.val(fracy);\n          grad.setAttribute('cx', fracx);\n          grad.setAttribute('cy', fracy);\n          cX = fracx;\n          cY = fracy;\n          xform();\n          break;\n        case 'focus':\n          attrInput.fx.val(fracx);\n          attrInput.fy.val(fracy);\n          grad.setAttribute('fx', fracx);\n          grad.setAttribute('fy', fracy);\n          xform();\n        }\n\n        evt.preventDefault();\n      };\n\n      const onCoordUp = function () {\n        draggingCoord = null;\n        $win.unbind('mousemove', onCoordDrag).unbind('mouseup', onCoordUp);\n      };\n\n      // Linear gradient\n      // (function () {\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n\n      let numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      for (let i = 0; i < numstops; i++) {\n        mkStop(0, 0, 0, 0, stops[i]);\n      }\n\n      spreadMethodOpt.val(curGradient.getAttribute('spreadMethod') || 'pad');\n\n      let offset;\n\n      // No match, so show focus point\n      showFocus = false;\n\n      previewRect.setAttribute('fill-opacity', gradalpha / 100);\n\n      $('#' + id + ' div.grad_coord').mousedown(function (evt) {\n        evt.preventDefault();\n        draggingCoord = $(this);\n        // const sPos = draggingCoord.offset();\n        offset = draggingCoord.parent().offset();\n        $win.mousemove(onCoordDrag).mouseup(onCoordUp);\n      });\n\n      // bind GUI elements\n      $('#' + id + '_jGraduate_Ok').bind('click', function () {\n        $this.paint.type = curType;\n        $this.paint[curType] = curGradient.cloneNode(true);\n        $this.paint.solidColor = null;\n        okClicked();\n      });\n      $('#' + id + '_jGraduate_Cancel').bind('click', function (paint) {\n        cancelClicked();\n      });\n\n      if (curType === 'radialGradient') {\n        if (showFocus) {\n          focusCoord.show();\n        } else {\n          focusCoord.hide();\n          attrInput.fx.val('');\n          attrInput.fy.val('');\n        }\n      }\n\n      $('#' + id + '_jGraduate_match_ctr')[0].checked = !showFocus;\n\n      let lastfx, lastfy;\n\n      $('#' + id + '_jGraduate_match_ctr').change(function () {\n        showFocus = !this.checked;\n        focusCoord.toggle(showFocus);\n        attrInput.fx.val('');\n        attrInput.fy.val('');\n        const grad = curGradient;\n        if (!showFocus) {\n          lastfx = grad.getAttribute('fx');\n          lastfy = grad.getAttribute('fy');\n          grad.removeAttribute('fx');\n          grad.removeAttribute('fy');\n        } else {\n          const fx = lastfx || 0.5;\n          const fy = lastfy || 0.5;\n          grad.setAttribute('fx', fx);\n          grad.setAttribute('fy', fy);\n          attrInput.fx.val(fx);\n          attrInput.fy.val(fy);\n        }\n      });\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      let slider;\n\n      const setSlider = function (e) {\n        const {offset} = slider;\n        const div = slider.parent;\n        let x = (e.pageX - offset.left - parseInt(div.css('border-left-width')));\n        if (x > SLIDERW) x = SLIDERW;\n        if (x <= 0) x = 0;\n        const posx = x - 5;\n        x /= SLIDERW;\n\n        switch (slider.type) {\n        case 'radius':\n          x = Math.pow(x * 2, 2.5);\n          if (x > 0.98 && x < 1.02) x = 1;\n          if (x <= 0.01) x = 0.01;\n          curGradient.setAttribute('r', x);\n          break;\n        case 'opacity':\n          $this.paint.alpha = parseInt(x * 100);\n          previewRect.setAttribute('fill-opacity', x);\n          break;\n        case 'ellip':\n          scaleX = 1;\n          scaleY = 1;\n          if (x < 0.5) {\n            x /= 0.5; // 0.001\n            scaleX = x <= 0 ? 0.01 : x;\n          } else if (x > 0.5) {\n            x /= 0.5; // 2\n            x = 2 - x;\n            scaleY = x <= 0 ? 0.01 : x;\n          }\n          xform();\n          x -= 1;\n          if (scaleY === x + 1) {\n            x = Math.abs(x);\n          }\n          break;\n        case 'angle':\n          x = x - 0.5;\n          angle = x *= 180;\n          xform();\n          x /= 100;\n          break;\n        }\n        slider.elem.css({'margin-left': posx});\n        x = Math.round(x * 100);\n        slider.input.val(x);\n      };\n\n      let ellipVal = 0, angleVal = 0;\n\n      if (curType === 'radialGradient') {\n        const tlist = curGradient.gradientTransform.baseVal;\n        if (tlist.numberOfItems === 2) {\n          const t = tlist.getItem(0);\n          const s = tlist.getItem(1);\n          if (t.type === 2 && s.type === 3) {\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        } else if (tlist.numberOfItems === 3) {\n          // Assume [R][T][S]\n          const r = tlist.getItem(0);\n          const t = tlist.getItem(1);\n          const s = tlist.getItem(2);\n\n          if (r.type === 4 &&\n            t.type === 2 &&\n            s.type === 3\n          ) {\n            angleVal = Math.round(r.angle);\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        }\n      }\n\n      const sliders = {\n        radius: {\n          handle: '#' + id + '_jGraduate_RadiusArrows',\n          input: '#' + id + '_jGraduate_RadiusInput',\n          val: (curGradient.getAttribute('r') || 0.5) * 100\n        },\n        opacity: {\n          handle: '#' + id + '_jGraduate_OpacArrows',\n          input: '#' + id + '_jGraduate_OpacInput',\n          val: $this.paint.alpha || 100\n        },\n        ellip: {\n          handle: '#' + id + '_jGraduate_EllipArrows',\n          input: '#' + id + '_jGraduate_EllipInput',\n          val: ellipVal\n        },\n        angle: {\n          handle: '#' + id + '_jGraduate_AngleArrows',\n          input: '#' + id + '_jGraduate_AngleInput',\n          val: angleVal\n        }\n      };\n\n      $.each(sliders, function (type, data) {\n        const handle = $(data.handle);\n        handle.mousedown(function (evt) {\n          const parent = handle.parent();\n          slider = {\n            type,\n            elem: handle,\n            input: $(data.input),\n            parent,\n            offset: parent.offset()\n          };\n          $win.mousemove(dragSlider).mouseup(stopSlider);\n          evt.preventDefault();\n        });\n\n        $(data.input).val(data.val).change(function () {\n          const isRad = curType === 'radialGradient';\n          let val = +this.value;\n          let xpos = 0;\n          switch (type) {\n          case 'radius':\n            if (isRad) curGradient.setAttribute('r', val / 100);\n            xpos = (Math.pow(val / 100, 1 / 2.5) / 2) * SLIDERW;\n            break;\n\n          case 'opacity':\n            $this.paint.alpha = val;\n            previewRect.setAttribute('fill-opacity', val / 100);\n            xpos = val * (SLIDERW / 100);\n            break;\n\n          case 'ellip':\n            scaleX = scaleY = 1;\n            if (val === 0) {\n              xpos = SLIDERW * 0.5;\n              break;\n            }\n            if (val > 99.5) val = 99.5;\n            if (val > 0) {\n              scaleY = 1 - (val / 100);\n            } else {\n              scaleX = -(val / 100) - 1;\n            }\n\n            xpos = SLIDERW * ((val + 100) / 2) / 100;\n            if (isRad) xform();\n            break;\n\n          case 'angle':\n            angle = val;\n            xpos = angle / 180;\n            xpos += 0.5;\n            xpos *= SLIDERW;\n            if (isRad) xform();\n          }\n          if (xpos > SLIDERW) {\n            xpos = SLIDERW;\n          } else if (xpos < 0) {\n            xpos = 0;\n          }\n          handle.css({'margin-left': xpos - 5});\n        }).change();\n      });\n\n      const dragSlider = function (evt) {\n        setSlider(evt);\n        evt.preventDefault();\n      };\n\n      const stopSlider = function (evt) {\n        $win.unbind('mousemove', dragSlider).unbind('mouseup', stopSlider);\n        slider = null;\n      };\n\n      // --------------\n      let thisAlpha = ($this.paint.alpha * 255 / 100).toString(16);\n      while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n      thisAlpha = thisAlpha.split('.')[0];\n      color = $this.paint.solidColor === 'none' ? '' : $this.paint.solidColor + thisAlpha;\n\n      if (!isSolid) {\n        color = stops[0].getAttribute('stop-color');\n      }\n\n      // This should be done somewhere else, probably\n      $.extend($.fn.jPicker.defaults.window, {\n        alphaSupport: true, effects: {type: 'show', speed: 0}\n      });\n\n      colPicker.jPicker(\n        {\n          window: {title: $settings.window.pickerTitle},\n          images: {clientPath: $settings.images.clientPath},\n          color: {active: color, alphaSupport: true}\n        },\n        function (color) {\n          $this.paint.type = 'solidColor';\n          $this.paint.alpha = color.val('ahex') ? Math.round((color.val('a') / 255) * 100) : 100;\n          $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';\n          $this.paint.radialGradient = null;\n          okClicked();\n        },\n        null,\n        function () { cancelClicked(); }\n      );\n\n      const tabs = $(idref + ' .jGraduate_tabs li');\n      tabs.click(function () {\n        tabs.removeClass('jGraduate_tab_current');\n        $(this).addClass('jGraduate_tab_current');\n        $(idref + ' > div').hide();\n        const type = $(this).attr('data-type');\n        /* const container = */ $(idref + ' .jGraduate_gradPick').show();\n        if (type === 'rg' || type === 'lg') {\n          // Show/hide appropriate fields\n          $('.jGraduate_' + type + '_field').show();\n          $('.jGraduate_' + (type === 'lg' ? 'rg' : 'lg') + '_field').hide();\n\n          $('#' + id + '_jgraduate_rect')[0].setAttribute('fill', 'url(#' + id + '_' + type + '_jgraduate_grad)');\n\n          // Copy stops\n\n          curType = type === 'lg' ? 'linearGradient' : 'radialGradient';\n\n          $('#' + id + '_jGraduate_OpacInput').val($this.paint.alpha).change();\n\n          const newGrad = $('#' + id + '_' + type + '_jgraduate_grad')[0];\n\n          if (curGradient !== newGrad) {\n            const curStops = $(curGradient).find('stop');\n            $(newGrad).empty().append(curStops);\n            curGradient = newGrad;\n            const sm = spreadMethodOpt.val();\n            curGradient.setAttribute('spreadMethod', sm);\n          }\n          showFocus = type === 'rg' && curGradient.getAttribute('fx') != null && !(cx === fx && cy === fy);\n          $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);\n          if (showFocus) {\n            $('#' + id + '_jGraduate_match_ctr')[0].checked = false;\n          }\n        } else {\n          $(idref + ' .jGraduate_gradPick').hide();\n          $(idref + ' .jGraduate_colPick').show();\n        }\n      });\n      $(idref + ' > div').hide();\n      tabs.removeClass('jGraduate_tab_current');\n      let tab;\n      switch ($this.paint.type) {\n      case 'linearGradient':\n        tab = $(idref + ' .jGraduate_tab_lingrad');\n        break;\n      case 'radialGradient':\n        tab = $(idref + ' .jGraduate_tab_radgrad');\n        break;\n      default:\n        tab = $(idref + ' .jGraduate_tab_color');\n        break;\n      }\n      $this.show();\n\n      // jPicker will try to show after a 0ms timeout, so need to fire this after that\n      setTimeout(() => {\n        tab.addClass('jGraduate_tab_current').click();\n      }, 10);\n    });\n  };\n  return $;\n}\n","/**\n * jPicker (Adapted from version 1.1.6)\n *\n * jQuery Plugin for Photoshop style color picker\n *\n * @module jPicker\n * @copyright (c) 2010 Christopher T. Tillman\n * Digital Magic Productions, Inc. ({@link http://www.digitalmagicpro.com/})\n * FREE to use, alter, copy, sell, and especially ENHANCE\n * @license MIT\n *\n * Painstakingly ported from John Dyers' excellent work on his own color picker based on the Prototype framework.\n *\n * John Dyers' website: {@link http://johndyer.name}\n * Color Picker page: {@link http://johndyer.name/photoshop-like-javascript-color-picker/}\n */\n\n/**\n* @external Math\n*/\n/**\n* @memberof external:Math\n* @param {Float} value\n* @param {Float} precision\n* @returns {Float}\n*/\nfunction toFixedNumeric (value, precision) {\n  if (precision === undefined) precision = 0;\n  return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);\n}\n\n/**\n* @function module:jPicker.jPicker\n* @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})\n* @returns {external:jQuery}\n*/\nconst jPicker = function ($) {\n  if (!$.loadingStylesheets) {\n    /**\n    * @name loadingStylesheets\n    * @type {string[]}\n    * @memberof external:jQuery\n    */\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jPicker.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @typedef {PlainObject} module:jPicker.SliderOptions\n  * @property {external:jQuery|PlainObject} arrow\n  * @property {string} arrow.image Not in use?\n  * @property {Float} arrow.width\n  * @property {Float} arrow.height\n  * @property {PlainObject} map\n  * @property {Float} map.width\n  * @property {Float} map.height\n  */\n\n  /**\n  * Encapsulate slider functionality for the ColorMap and ColorBar -\n  * could be useful to use a jQuery UI draggable for this with certain extensions.\n  * @param {external:jQuery} bar\n  * @param {module:jPicker.SliderOptions} options\n  * @returns {undefined}\n  */\n  class Slider {\n    constructor (bar, options) {\n      const $this = this;\n      function fireChangeEvents (context) {\n        for (let i = 0; i < changeEvents.length; i++) {\n          changeEvents[i].call($this, $this, context);\n        }\n      }\n      // bind the mousedown to the bar not the arrow for quick snapping to the clicked location\n      function mouseDown (e) {\n        const off = bar.offset();\n        offset = {l: off.left | 0, t: off.top | 0};\n        clearTimeout(timeout);\n        // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call($this, e);\n        }, 0);\n        // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing\n        $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);\n        e.preventDefault(); // don't try to select anything or drag the image to the desktop\n      }\n      // set the values as the mouse moves\n      function mouseMove (e) {\n        clearTimeout(timeout);\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call($this, e);\n        }, 0);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      // unbind the document events - they aren't needed when not dragging\n      function mouseUp (e) {\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      // calculate mouse position and set value within the current range\n      function setValuesFromMousePosition (e) {\n        const barW = bar.w, // local copies for YUI compressor\n          barH = bar.h;\n        let locX = e.pageX - offset.l,\n          locY = e.pageY - offset.t;\n        // keep the arrow within the bounds of the bar\n        if (locX < 0) locX = 0;\n        else if (locX > barW) locX = barW;\n        if (locY < 0) locY = 0;\n        else if (locY > barH) locY = barH;\n        val.call($this, 'xy', {x: ((locX / barW) * rangeX) + minX, y: ((locY / barH) * rangeY) + minY});\n      }\n      function draw () {\n        const\n          barW = bar.w,\n          barH = bar.h,\n          arrowW = arrow.w,\n          arrowH = arrow.h;\n        let arrowOffsetX = 0,\n          arrowOffsetY = 0;\n        setTimeout(function () {\n          if (rangeX > 0) { // range is greater than zero\n            // constrain to bounds\n            if (x === maxX) arrowOffsetX = barW;\n            else arrowOffsetX = ((x / rangeX) * barW) | 0;\n          }\n          if (rangeY > 0) { // range is greater than zero\n            // constrain to bounds\n            if (y === maxY) arrowOffsetY = barH;\n            else arrowOffsetY = ((y / rangeY) * barH) | 0;\n          }\n          // if arrow width is greater than bar width, center arrow and prevent horizontal dragging\n          if (arrowW >= barW) arrowOffsetX = (barW >> 1) - (arrowW >> 1); // number >> 1 - superfast bitwise divide by two and truncate (move bits over one bit discarding lowest)\n          else arrowOffsetX -= arrowW >> 1;\n          // if arrow height is greater than bar height, center arrow and prevent vertical dragging\n          if (arrowH >= barH) arrowOffsetY = (barH >> 1) - (arrowH >> 1);\n          else arrowOffsetY -= arrowH >> 1;\n          // set the arrow position based on these offsets\n          arrow.css({left: arrowOffsetX + 'px', top: arrowOffsetY + 'px'});\n        }, 0);\n      }\n      function val (name, value, context) {\n        const set = value !== undefined;\n        if (!set) {\n          if (name === undefined || name == null) name = 'xy';\n          switch (name.toLowerCase()) {\n          case 'x': return x;\n          case 'y': return y;\n          case 'xy':\n          default: return {x, y};\n          }\n        }\n        if (context != null && context === $this) return;\n        let changed = false;\n\n        let newX, newY;\n        if (name == null) name = 'xy';\n        switch (name.toLowerCase()) {\n        case 'x':\n          newX = (value && ((value.x && value.x | 0) || value | 0)) || 0;\n          break;\n        case 'y':\n          newY = (value && ((value.y && value.y | 0) || value | 0)) || 0;\n          break;\n        case 'xy':\n        default:\n          newX = (value && value.x && value.x | 0) || 0;\n          newY = (value && value.y && value.y | 0) || 0;\n          break;\n        }\n        if (newX != null) {\n          if (newX < minX) newX = minX;\n          else if (newX > maxX) newX = maxX;\n          if (x !== newX) {\n            x = newX;\n            changed = true;\n          }\n        }\n        if (newY != null) {\n          if (newY < minY) newY = minY;\n          else if (newY > maxY) newY = maxY;\n          if (y !== newY) {\n            y = newY;\n            changed = true;\n          }\n        }\n        changed && fireChangeEvents.call($this, context || $this);\n      }\n      function range (name, value) {\n        const set = value !== undefined;\n        if (!set) {\n          if (name === undefined || name == null) name = 'all';\n          switch (name.toLowerCase()) {\n          case 'minx': return minX;\n          case 'maxx': return maxX;\n          case 'rangex': return {minX, maxX, rangeX};\n          case 'miny': return minY;\n          case 'maxy': return maxY;\n          case 'rangey': return {minY, maxY, rangeY};\n          case 'all':\n          default: return {minX, maxX, rangeX, minY, maxY, rangeY};\n          }\n        }\n        let // changed = false,\n          newMinX,\n          newMaxX,\n          newMinY,\n          newMaxY;\n        if (name == null) name = 'all';\n        switch (name.toLowerCase()) {\n        case 'minx':\n          newMinX = (value && ((value.minX && value.minX | 0) || value | 0)) || 0;\n          break;\n        case 'maxx':\n          newMaxX = (value && ((value.maxX && value.maxX | 0) || value | 0)) || 0;\n          break;\n        case 'rangex':\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          break;\n        case 'miny':\n          newMinY = (value && ((value.minY && value.minY | 0) || value | 0)) || 0;\n          break;\n        case 'maxy':\n          newMaxY = (value && ((value.maxY && value.maxY | 0) || value | 0)) || 0;\n          break;\n        case 'rangey':\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        case 'all':\n        default:\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        }\n        if (newMinX != null && minX !== newMinX) {\n          minX = newMinX;\n          rangeX = maxX - minX;\n        }\n        if (newMaxX != null && maxX !== newMaxX) {\n          maxX = newMaxX;\n          rangeX = maxX - minX;\n        }\n        if (newMinY != null && minY !== newMinY) {\n          minY = newMinY;\n          rangeY = maxY - minY;\n        }\n        if (newMaxY != null && maxY !== newMaxY) {\n          maxY = newMaxY;\n          rangeY = maxY - minY;\n        }\n      }\n      function bind (callback) {\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      function unbind (callback) {\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) changeEvents.splice(i, 1);\n      }\n      function destroy () {\n        // unbind all possible events and null objects\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        bar.unbind('mousedown', mouseDown);\n        bar = null;\n        arrow = null;\n        changeEvents = null;\n      }\n      let offset,\n        timeout,\n        x = 0,\n        y = 0,\n        minX = 0,\n        maxX = 100,\n        rangeX = 100,\n        minY = 0,\n        maxY = 100,\n        rangeY = 100,\n        arrow = bar.find('img:first'), // the arrow image to drag\n        changeEvents = [];\n\n      $.extend(true, $this, // public properties, methods, and event bindings - these we need to access from other controls\n        {\n          val,\n          range,\n          bind,\n          unbind,\n          destroy\n        }\n      );\n      // initialize this control\n      arrow.src = options.arrow && options.arrow.image;\n      arrow.w = (options.arrow && options.arrow.width) || arrow.width();\n      arrow.h = (options.arrow && options.arrow.height) || arrow.height();\n      bar.w = (options.map && options.map.width) || bar.width();\n      bar.h = (options.map && options.map.height) || bar.height();\n      // bind mousedown event\n      bar.bind('mousedown', mouseDown);\n      bind.call($this, draw);\n    }\n  }\n  // controls for all the input elements for the typing in color values\n  function ColorValuePicker (picker, color, bindedHex, alphaPrecision) {\n    const $this = this; // private properties and methods\n    const inputs = picker.find('td.Text input');\n    // input box key down - use arrows to alter color\n    function keyDown (e) {\n      if (e.target.value === '' && e.target !== hex.get(0) && ((bindedHex != null && e.target !== bindedHex.get(0)) || bindedHex == null)) return;\n      if (!validateKey(e)) return e;\n      switch (e.target) {\n      case red.get(0):\n        switch (e.keyCode) {\n        case 38:\n          red.val(setValueInRange.call($this, (red.val() << 0) + 1, 0, 255));\n          color.val('r', red.val(), e.target);\n          return false;\n        case 40:\n          red.val(setValueInRange.call($this, (red.val() << 0) - 1, 0, 255));\n          color.val('r', red.val(), e.target);\n          return false;\n        }\n        break;\n      case green.get(0):\n        switch (e.keyCode) {\n        case 38:\n          green.val(setValueInRange.call($this, (green.val() << 0) + 1, 0, 255));\n          color.val('g', green.val(), e.target);\n          return false;\n        case 40:\n          green.val(setValueInRange.call($this, (green.val() << 0) - 1, 0, 255));\n          color.val('g', green.val(), e.target);\n          return false;\n        }\n        break;\n      case blue.get(0):\n        switch (e.keyCode) {\n        case 38:\n          blue.val(setValueInRange.call($this, (blue.val() << 0) + 1, 0, 255));\n          color.val('b', blue.val(), e.target);\n          return false;\n        case 40:\n          blue.val(setValueInRange.call($this, (blue.val() << 0) - 1, 0, 255));\n          color.val('b', blue.val(), e.target);\n          return false;\n        }\n        break;\n      case alpha && alpha.get(0):\n        switch (e.keyCode) {\n        case 38:\n          alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) + 1, 0, 100));\n          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n          return false;\n        case 40:\n          alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) - 1, 0, 100));\n          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n          return false;\n        }\n        break;\n      case hue.get(0):\n        switch (e.keyCode) {\n        case 38:\n          hue.val(setValueInRange.call($this, (hue.val() << 0) + 1, 0, 360));\n          color.val('h', hue.val(), e.target);\n          return false;\n        case 40:\n          hue.val(setValueInRange.call($this, (hue.val() << 0) - 1, 0, 360));\n          color.val('h', hue.val(), e.target);\n          return false;\n        }\n        break;\n      case saturation.get(0):\n        switch (e.keyCode) {\n        case 38:\n          saturation.val(setValueInRange.call($this, (saturation.val() << 0) + 1, 0, 100));\n          color.val('s', saturation.val(), e.target);\n          return false;\n        case 40:\n          saturation.val(setValueInRange.call($this, (saturation.val() << 0) - 1, 0, 100));\n          color.val('s', saturation.val(), e.target);\n          return false;\n        }\n        break;\n      case value.get(0):\n        switch (e.keyCode) {\n        case 38:\n          value.val(setValueInRange.call($this, (value.val() << 0) + 1, 0, 100));\n          color.val('v', value.val(), e.target);\n          return false;\n        case 40:\n          value.val(setValueInRange.call($this, (value.val() << 0) - 1, 0, 100));\n          color.val('v', value.val(), e.target);\n          return false;\n        }\n        break;\n      }\n    }\n    // input box key up - validate value and set color\n    function keyUp (e) {\n      if (e.target.value === '' && e.target !== hex.get(0) &&\n        ((bindedHex != null && e.target !== bindedHex.get(0)) ||\n        bindedHex == null)) return;\n      if (!validateKey(e)) return e;\n      switch (e.target) {\n      case red.get(0):\n        red.val(setValueInRange.call($this, red.val(), 0, 255));\n        color.val('r', red.val(), e.target);\n        break;\n      case green.get(0):\n        green.val(setValueInRange.call($this, green.val(), 0, 255));\n        color.val('g', green.val(), e.target);\n        break;\n      case blue.get(0):\n        blue.val(setValueInRange.call($this, blue.val(), 0, 255));\n        color.val('b', blue.val(), e.target);\n        break;\n      case alpha && alpha.get(0):\n        alpha.val(setValueInRange.call($this, alpha.val(), 0, 100));\n        color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n        break;\n      case hue.get(0):\n        hue.val(setValueInRange.call($this, hue.val(), 0, 360));\n        color.val('h', hue.val(), e.target);\n        break;\n      case saturation.get(0):\n        saturation.val(setValueInRange.call($this, saturation.val(), 0, 100));\n        color.val('s', saturation.val(), e.target);\n        break;\n      case value.get(0):\n        value.val(setValueInRange.call($this, value.val(), 0, 100));\n        color.val('v', value.val(), e.target);\n        break;\n      case hex.get(0):\n        hex.val(hex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n        bindedHex && bindedHex.val(hex.val());\n        color.val('hex', hex.val() !== '' ? hex.val() : null, e.target);\n        break;\n      case bindedHex && bindedHex.get(0):\n        bindedHex.val(bindedHex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n        hex.val(bindedHex.val());\n        color.val('hex', bindedHex.val() !== '' ? bindedHex.val() : null, e.target);\n        break;\n      case ahex && ahex.get(0):\n        ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));\n        color.val('a', ahex.val() != null ? parseInt(ahex.val(), 16) : null, e.target);\n        break;\n      }\n    }\n    // input box blur - reset to original if value empty\n    function blur (e) {\n      if (color.val() != null) {\n        switch (e.target) {\n        case red.get(0): red.val(color.val('r')); break;\n        case green.get(0): green.val(color.val('g')); break;\n        case blue.get(0): blue.val(color.val('b')); break;\n        case alpha && alpha.get(0): alpha.val(toFixedNumeric((color.val('a') * 100) / 255, alphaPrecision)); break;\n        case hue.get(0): hue.val(color.val('h')); break;\n        case saturation.get(0): saturation.val(color.val('s')); break;\n        case value.get(0): value.val(color.val('v')); break;\n        case hex.get(0):\n        case bindedHex && bindedHex.get(0):\n          hex.val(color.val('hex'));\n          bindedHex && bindedHex.val(color.val('hex'));\n          break;\n        case ahex && ahex.get(0): ahex.val(color.val('ahex').substring(6)); break;\n        }\n      }\n    }\n    function validateKey (e) {\n      switch (e.keyCode) {\n      case 9:\n      case 16:\n      case 29:\n      case 37:\n      case 39:\n        return false;\n      case 'c'.charCodeAt():\n      case 'v'.charCodeAt():\n        if (e.ctrlKey) return false;\n      }\n      return true;\n    }\n    // constrain value within range\n    function setValueInRange (value, min, max) {\n      if (value === '' || isNaN(value)) return min;\n      if (value > max) return max;\n      if (value < min) return min;\n      return value;\n    }\n    function colorChanged (ui, context) {\n      const all = ui.val('all');\n      if (context !== red.get(0)) red.val(all != null ? all.r : '');\n      if (context !== green.get(0)) green.val(all != null ? all.g : '');\n      if (context !== blue.get(0)) blue.val(all != null ? all.b : '');\n      if (alpha && context !== alpha.get(0)) alpha.val(all != null ? toFixedNumeric((all.a * 100) / 255, alphaPrecision) : '');\n      if (context !== hue.get(0)) hue.val(all != null ? all.h : '');\n      if (context !== saturation.get(0)) saturation.val(all != null ? all.s : '');\n      if (context !== value.get(0)) value.val(all != null ? all.v : '');\n      if (context !== hex.get(0) && ((bindedHex && context !== bindedHex.get(0)) || !bindedHex)) hex.val(all != null ? all.hex : '');\n      if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(all != null ? all.hex : '');\n      if (ahex && context !== ahex.get(0)) ahex.val(all != null ? all.ahex.substring(6) : '');\n    }\n    function destroy () {\n      // unbind all events and null objects\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);\n      color.unbind(colorChanged);\n      red = null;\n      green = null;\n      blue = null;\n      alpha = null;\n      hue = null;\n      saturation = null;\n      value = null;\n      hex = null;\n      ahex = null;\n    }\n    let\n      red = inputs.eq(3),\n      green = inputs.eq(4),\n      blue = inputs.eq(5),\n      alpha = inputs.length > 7 ? inputs.eq(6) : null,\n      hue = inputs.eq(0),\n      saturation = inputs.eq(1),\n      value = inputs.eq(2),\n      hex = inputs.eq(inputs.length > 7 ? 7 : 6),\n      ahex = inputs.length > 7 ? inputs.eq(8) : null;\n    $.extend(true, $this, {\n      // public properties and methods\n      destroy\n    });\n    red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);\n    red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);\n    color.bind(colorChanged);\n  }\n\n  /**\n  * @typedef {PlainObject} module:jPicker.JPickerInit\n  * @property {Integer} a\n  * @property {Integer} b\n  * @property {Integer} g\n  * @property {Integer} h\n  * @property {Integer} r\n  * @property {Integer} s\n  * @property {Integer} v\n  * @property {string} hex\n  * @property {string} ahex\n  */\n\n  /**\n  * @namespace {PlainObject} jPicker\n  * @memberof external:jQuery\n  */\n  $.jPicker = /** @lends external:jQuery.jPicker */ {\n    /**\n    * Array holding references to each active instance of the jPicker control\n    * @type {external:jQuery.fn.$.fn.jPicker[]}\n    */\n    List: [],\n    /**\n    * Color object - we will be able to assign by any color space type or\n    * retrieve any color space info.\n    * We want this public so we can optionally assign new color objects to\n    * initial values using inputs other than a string hex value (also supported)\n    * Note: JSDoc didn't document when expressed here as an ES6 Class.\n    * @namespace\n    * @class\n    * @memberof external:jQuery.jPicker\n    * @param {module:jPicker.JPickerInit} init\n    */\n    Color: function (init) {\n      const $this = this;\n      function fireChangeEvents (context) {\n        for (let i = 0; i < changeEvents.length; i++) changeEvents[i].call($this, $this, context);\n      }\n      function val (name, value, context) {\n        // Kind of ugly\n        const set = Boolean(value);\n        if (set && value.ahex === '') value.ahex = '00000000';\n        if (!set) {\n          if (name === undefined || name == null || name === '') name = 'all';\n          if (r == null) return null;\n          switch (name.toLowerCase()) {\n          case 'ahex': return ColorMethods.rgbaToHex({r, g, b, a});\n          case 'hex': return val('ahex').substring(0, 6);\n          case 'all': return {r, g, b, a, h, s, v, hex: val.call($this, 'hex'), ahex: val.call($this, 'ahex')};\n          default:\n            let ret = {};\n            const nameLength = name.length;\n            for (let i = 0; i < nameLength; i++) {\n              switch (name.charAt(i)) {\n              case 'r':\n                if (nameLength === 1) ret = r;\n                else ret.r = r;\n                break;\n              case 'g':\n                if (nameLength === 1) ret = g;\n                else ret.g = g;\n                break;\n              case 'b':\n                if (nameLength === 1) ret = b;\n                else ret.b = b;\n                break;\n              case 'a':\n                if (nameLength === 1) ret = a;\n                else ret.a = a;\n                break;\n              case 'h':\n                if (nameLength === 1) ret = h;\n                else ret.h = h;\n                break;\n              case 's':\n                if (nameLength === 1) ret = s;\n                else ret.s = s;\n                break;\n              case 'v':\n                if (nameLength === 1) ret = v;\n                else ret.v = v;\n                break;\n              }\n            }\n            return typeof ret === 'object' && !Object.keys(ret).length\n              ? val.call($this, 'all')\n              : ret;\n          }\n        }\n        if (context != null && context === $this) return;\n        if (name == null) name = '';\n\n        let changed = false;\n        if (value == null) {\n          if (r != null) {\n            r = null;\n            changed = true;\n          }\n          if (g != null) {\n            g = null;\n            changed = true;\n          }\n          if (b != null) {\n            b = null;\n            changed = true;\n          }\n          if (a != null) {\n            a = null;\n            changed = true;\n          }\n          if (h != null) {\n            h = null;\n            changed = true;\n          }\n          if (s != null) {\n            s = null;\n            changed = true;\n          }\n          if (v != null) {\n            v = null;\n            changed = true;\n          }\n          changed && fireChangeEvents.call($this, context || $this);\n          return;\n        }\n        switch (name.toLowerCase()) {\n        case 'ahex':\n        case 'hex':\n          const ret = ColorMethods.hexToRgba((value && (value.ahex || value.hex)) || value || 'none');\n          val.call($this, 'rgba', {r: ret.r, g: ret.g, b: ret.b, a: name === 'ahex' ? ret.a : a != null ? a : 255}, context);\n          break;\n        default:\n          if (value && (value.ahex != null || value.hex != null)) {\n            val.call($this, 'ahex', value.ahex || value.hex || '00000000', context);\n            return;\n          }\n          const newV = {};\n          let rgb = false, hsv = false;\n          if (value.r !== undefined && !name.includes('r')) name += 'r';\n          if (value.g !== undefined && !name.includes('g')) name += 'g';\n          if (value.b !== undefined && !name.includes('b')) name += 'b';\n          if (value.a !== undefined && !name.includes('a')) name += 'a';\n          if (value.h !== undefined && !name.includes('h')) name += 'h';\n          if (value.s !== undefined && !name.includes('s')) name += 's';\n          if (value.v !== undefined && !name.includes('v')) name += 'v';\n          for (let i = 0; i < name.length; i++) {\n            switch (name.charAt(i)) {\n            case 'r':\n              if (hsv) continue;\n              rgb = true;\n              newV.r = (value.r && value.r | 0) || (value | 0) || 0;\n              if (newV.r < 0) newV.r = 0;\n              else if (newV.r > 255) newV.r = 255;\n              if (r !== newV.r) {\n                ({r} = newV);\n                changed = true;\n              }\n              break;\n            case 'g':\n              if (hsv) continue;\n              rgb = true;\n              newV.g = (value && value.g && value.g | 0) || (value && value | 0) || 0;\n              if (newV.g < 0) newV.g = 0;\n              else if (newV.g > 255) newV.g = 255;\n              if (g !== newV.g) {\n                ({g} = newV);\n                changed = true;\n              }\n              break;\n            case 'b':\n              if (hsv) continue;\n              rgb = true;\n              newV.b = (value && value.b && value.b | 0) || (value && value | 0) || 0;\n              if (newV.b < 0) newV.b = 0;\n              else if (newV.b > 255) newV.b = 255;\n              if (b !== newV.b) {\n                ({b} = newV);\n                changed = true;\n              }\n              break;\n            case 'a':\n              newV.a = value && value.a != null ? value.a | 0 : value | 0;\n              if (newV.a < 0) newV.a = 0;\n              else if (newV.a > 255) newV.a = 255;\n              if (a !== newV.a) {\n                ({a} = newV);\n                changed = true;\n              }\n              break;\n            case 'h':\n              if (rgb) continue;\n              hsv = true;\n              newV.h = (value && value.h && value.h | 0) || (value && value | 0) || 0;\n              if (newV.h < 0) newV.h = 0;\n              else if (newV.h > 360) newV.h = 360;\n              if (h !== newV.h) {\n                ({h} = newV);\n                changed = true;\n              }\n              break;\n            case 's':\n              if (rgb) continue;\n              hsv = true;\n              newV.s = value.s != null ? value.s | 0 : value | 0;\n              if (newV.s < 0) newV.s = 0;\n              else if (newV.s > 100) newV.s = 100;\n              if (s !== newV.s) {\n                ({s} = newV);\n                changed = true;\n              }\n              break;\n            case 'v':\n              if (rgb) continue;\n              hsv = true;\n              newV.v = value.v != null ? value.v | 0 : value | 0;\n              if (newV.v < 0) newV.v = 0;\n              else if (newV.v > 100) newV.v = 100;\n              if (v !== newV.v) {\n                ({v} = newV);\n                changed = true;\n              }\n              break;\n            }\n          }\n          if (changed) {\n            if (rgb) {\n              r = r || 0;\n              g = g || 0;\n              b = b || 0;\n              const ret = ColorMethods.rgbToHsv({r, g, b});\n              ({h, s, v} = ret);\n            } else if (hsv) {\n              h = h || 0;\n              s = s != null ? s : 100;\n              v = v != null ? v : 100;\n              const ret = ColorMethods.hsvToRgb({h, s, v});\n              ({r, g, b} = ret);\n            }\n            a = a != null ? a : 255;\n            fireChangeEvents.call($this, context || $this);\n          }\n          break;\n        }\n      }\n      function bind (callback) {\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      function unbind (callback) {\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) {\n          changeEvents.splice(i, 1);\n        }\n      }\n      function destroy () {\n        changeEvents = null;\n      }\n      let r, g, b, a, h, s, v, changeEvents = [];\n\n      $.extend(true, $this, {\n        // public properties and methods\n        val,\n        bind,\n        unbind,\n        destroy\n      });\n      if (init) {\n        if (init.ahex != null) {\n          val('ahex', init);\n        } else if (init.hex != null) {\n          val(\n            (init.a != null ? 'a' : '') + 'hex',\n            init.a != null\n              ? {ahex: init.hex + ColorMethods.intToHex(init.a)}\n              : init\n          );\n        } else if (init.r != null && init.g != null && init.b != null) {\n          val('rgb' + (init.a != null ? 'a' : ''), init);\n        } else if (init.h != null && init.s != null && init.v != null) {\n          val('hsv' + (init.a != null ? 'a' : ''), init);\n        }\n      }\n    },\n    /**\n    * color conversion methods  - make public to give use to external scripts\n    * @namespace\n    */\n    ColorMethods: {\n      /**\n      * @typedef {PlainObject} module:jPicker.RGBA\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      * @property {Integer} a\n      */\n      /**\n      * @typedef {PlainObject} module:jPicker.RGB\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      */\n      /**\n      * @param {string} hex\n      * @returns {module:jPicker.RGBA}\n      */\n      hexToRgba (hex) {\n        if (hex === '' || hex === 'none') return {r: null, g: null, b: null, a: null};\n        hex = this.validateHex(hex);\n        let r = '00', g = '00', b = '00', a = '255';\n        if (hex.length === 6) hex += 'ff';\n        if (hex.length > 6) {\n          r = hex.substring(0, 2);\n          g = hex.substring(2, 4);\n          b = hex.substring(4, 6);\n          a = hex.substring(6, hex.length);\n        } else {\n          if (hex.length > 4) {\n            r = hex.substring(4, hex.length);\n            hex = hex.substring(0, 4);\n          }\n          if (hex.length > 2) {\n            g = hex.substring(2, hex.length);\n            hex = hex.substring(0, 2);\n          }\n          if (hex.length > 0) b = hex.substring(0, hex.length);\n        }\n        return {\n          r: this.hexToInt(r), g: this.hexToInt(g), b: this.hexToInt(b), a: this.hexToInt(a)\n        };\n      },\n      /**\n      * @param {string} hex\n      * @returns {string}\n      */\n      validateHex (hex) {\n        // if (typeof hex === 'object') return '';\n        hex = hex.toLowerCase().replace(/[^a-f0-9]/g, '');\n        if (hex.length > 8) hex = hex.substring(0, 8);\n        return hex;\n      },\n      /**\n      * @param {module:jPicker.RGBA} rgba\n      * @returns {string}\n      */\n      rgbaToHex (rgba) {\n        return this.intToHex(rgba.r) + this.intToHex(rgba.g) + this.intToHex(rgba.b) + this.intToHex(rgba.a);\n      },\n      /**\n      * @param {Integer} dec\n      * @returns {string}\n      */\n      intToHex (dec) {\n        let result = (dec | 0).toString(16);\n        if (result.length === 1) result = ('0' + result);\n        return result.toLowerCase();\n      },\n      /**\n      * @param {string} hex\n      * @returns {Integer}\n      */\n      hexToInt (hex) {\n        return parseInt(hex, 16);\n      },\n      /**\n      * @typedef {PlainObject} module:jPicker.HSV\n      * @property {Integer} h\n      * @property {Integer} s\n      * @property {Integer} v\n      */\n      /**\n      * @param {module:jPicker.RGB} rgb\n      * @returns {module:jPicker.HSV}\n      */\n      rgbToHsv (rgb) {\n        const r = rgb.r / 255, g = rgb.g / 255, b = rgb.b / 255, hsv = {h: 0, s: 0, v: 0};\n        let min = 0, max = 0;\n        if (r >= g && r >= b) {\n          max = r;\n          min = g > b ? b : g;\n        } else if (g >= b && g >= r) {\n          max = g;\n          min = r > b ? b : r;\n        } else {\n          max = b;\n          min = g > r ? r : g;\n        }\n        hsv.v = max;\n        hsv.s = max ? (max - min) / max : 0;\n        let delta;\n        if (!hsv.s) hsv.h = 0;\n        else {\n          delta = max - min;\n          if (r === max) hsv.h = (g - b) / delta;\n          else if (g === max) hsv.h = 2 + (b - r) / delta;\n          else hsv.h = 4 + (r - g) / delta;\n          hsv.h = parseInt(hsv.h * 60);\n          if (hsv.h < 0) hsv.h += 360;\n        }\n        hsv.s = (hsv.s * 100) | 0;\n        hsv.v = (hsv.v * 100) | 0;\n        return hsv;\n      },\n      /**\n      * @param {module:jPicker.HSV} hsv\n      * @returns {module:jPicker.RGB}\n      */\n      hsvToRgb (hsv) {\n        const rgb = {r: 0, g: 0, b: 0, a: 100};\n        let {h, s, v} = hsv;\n        if (s === 0) {\n          if (v === 0) rgb.r = rgb.g = rgb.b = 0;\n          else rgb.r = rgb.g = rgb.b = (v * 255 / 100) | 0;\n        } else {\n          if (h === 360) h = 0;\n          h /= 60;\n          s = s / 100;\n          v = v / 100;\n          const i = h | 0,\n            f = h - i,\n            p = v * (1 - s),\n            q = v * (1 - (s * f)),\n            t = v * (1 - (s * (1 - f)));\n          switch (i) {\n          case 0:\n            rgb.r = v;\n            rgb.g = t;\n            rgb.b = p;\n            break;\n          case 1:\n            rgb.r = q;\n            rgb.g = v;\n            rgb.b = p;\n            break;\n          case 2:\n            rgb.r = p;\n            rgb.g = v;\n            rgb.b = t;\n            break;\n          case 3:\n            rgb.r = p;\n            rgb.g = q;\n            rgb.b = v;\n            break;\n          case 4:\n            rgb.r = t;\n            rgb.g = p;\n            rgb.b = v;\n            break;\n          case 5:\n            rgb.r = v;\n            rgb.g = p;\n            rgb.b = q;\n            break;\n          }\n          rgb.r = (rgb.r * 255) | 0;\n          rgb.g = (rgb.g * 255) | 0;\n          rgb.b = (rgb.b * 255) | 0;\n        }\n        return rgb;\n      }\n    }\n  };\n  const {Color, List, ColorMethods} = $.jPicker; // local copies for YUI compressor\n  /**\n   * @function external:jQuery.fn.jPicker\n   * @see {@link external:jQuery.fn.$.fn.jPicker}\n   */\n  /**\n  * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't\n  *   get us treated as a function as well as a namespace (even with `@function name`),\n  *   so we use an approach to add a redundant `$.fn.` in the name.\n  * @namespace\n  * @memberof external:jQuery.fn\n  * @param {external:jQuery.fn.jPickerOptions} options\n  * @returns {external:jQuery}\n  */\n  $.fn.jPicker = function (options) {\n    const $arguments = arguments;\n    return this.each(function () {\n      const $this = this, settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor\n      if ($($this).get(0).nodeName.toLowerCase() === 'input') { // Add color picker icon if binding to an input element and bind the events to the input\n        $.extend(true, settings, {\n          window: {\n            bindToInput: true,\n            expandable: true,\n            input: $($this)\n          }\n        });\n        if ($($this).val() === '') {\n          settings.color.active = new Color({hex: null});\n          settings.color.current = new Color({hex: null});\n        } else if (ColorMethods.validateHex($($this).val())) {\n          settings.color.active = new Color({hex: $($this).val(), a: settings.color.active.val('a')});\n          settings.color.current = new Color({hex: $($this).val(), a: settings.color.active.val('a')});\n        }\n      }\n      if (settings.window.expandable) {\n        $($this).after('<span class=\"jPicker\"><span class=\"Icon\"><span class=\"Color\">&nbsp;</span><span class=\"Alpha\">&nbsp;</span><span class=\"Image\" title=\"Click To Open Color Picker\">&nbsp;</span><span class=\"Container\">&nbsp;</span></span></span>');\n      } else {\n        settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results\n      }\n      const isLessThanIE7 = parseFloat(navigator.appVersion.split('MSIE')[1]) < 7 && document.body.filters; // needed to run the AlphaImageLoader function for IE6\n      // set color mode and update visuals for the new color mode\n      /**\n       *\n       * @param {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} colorMode [description]\n       * @throws {Error} Invalid mode\n       * @returns {undefined}\n       */\n      function setColorMode (colorMode) {\n        const {active} = color, // local copies for YUI compressor\n          // {clientPath} = images,\n          hex = active.val('hex');\n        let rgbMap, rgbBar;\n        settings.color.mode = colorMode;\n        switch (colorMode) {\n        case 'h':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setImgLoc.call($this, colorMapL1, 0);\n            setAlpha.call($this, colorMapL1, 100);\n            setImgLoc.call($this, colorMapL2, 260);\n            setAlpha.call($this, colorMapL2, 100);\n            setBG.call($this, colorBarDiv, 'transparent');\n            setImgLoc.call($this, colorBarL1, 0);\n            setAlpha.call($this, colorBarL1, 100);\n            setImgLoc.call($this, colorBarL2, 260);\n            setAlpha.call($this, colorBarL2, 100);\n            setImgLoc.call($this, colorBarL3, 260);\n            setAlpha.call($this, colorBarL3, 100);\n            setImgLoc.call($this, colorBarL4, 260);\n            setAlpha.call($this, colorBarL4, 100);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 100, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 360});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('s'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 360 - active.val('h'), colorBar);\n          break;\n        case 's':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setImgLoc.call($this, colorMapL1, -260);\n            setImgLoc.call($this, colorMapL2, -520);\n            setImgLoc.call($this, colorBarL1, -260);\n            setImgLoc.call($this, colorBarL2, -520);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 100 - active.val('s'), colorBar);\n          break;\n        case 'v':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, '000000');\n            setImgLoc.call($this, colorMapL1, -780);\n            setImgLoc.call($this, colorMapL2, 260);\n            setBG.call($this, colorBarDiv, hex);\n            setImgLoc.call($this, colorBarL1, -520);\n            setImgLoc.call($this, colorBarL2, 260);\n            setAlpha.call($this, colorBarL2, 100);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('s')}, colorMap);\n          colorBar.val('y', 100 - active.val('v'), colorBar);\n          break;\n        case 'r':\n          rgbMap = -1040;\n          rgbBar = -780;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('r'), colorBar);\n          break;\n        case 'g':\n          rgbMap = -1560;\n          rgbBar = -1820;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('r')}, colorMap);\n          colorBar.val('y', 255 - active.val('g'), colorBar);\n          break;\n        case 'b':\n          rgbMap = -2080;\n          rgbBar = -2860;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('r'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('b'), colorBar);\n          break;\n        case 'a':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setImgLoc.call($this, colorMapL1, -260);\n            setImgLoc.call($this, colorMapL2, -520);\n            setImgLoc.call($this, colorBarL1, 260);\n            setImgLoc.call($this, colorBarL2, 260);\n            setAlpha.call($this, colorBarL2, 100);\n            setImgLoc.call($this, colorBarL6, 0);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (active.val('ahex') == null) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 255 - active.val('a'), colorBar);\n          break;\n        default:\n          throw new Error('Invalid Mode');\n        }\n        switch (colorMode) {\n        case 'h':\n          break;\n        case 's':\n        case 'v':\n        case 'a':\n          setTimeout(function () {\n            setAlpha.call($this, colorMapL1, 100);\n            setAlpha.call($this, colorBarL1, 100);\n            setImgLoc.call($this, colorBarL3, 260);\n            setAlpha.call($this, colorBarL3, 100);\n            setImgLoc.call($this, colorBarL4, 260);\n            setAlpha.call($this, colorBarL4, 100);\n          }, 0);\n          break;\n        case 'r':\n        case 'g':\n        case 'b':\n          setTimeout(function () {\n            setBG.call($this, colorMapDiv, 'transparent');\n            setBG.call($this, colorBarDiv, 'transparent');\n            setAlpha.call($this, colorBarL1, 100);\n            setAlpha.call($this, colorMapL1, 100);\n            setImgLoc.call($this, colorMapL1, rgbMap);\n            setImgLoc.call($this, colorMapL2, rgbMap - 260);\n            setImgLoc.call($this, colorBarL1, rgbBar - 780);\n            setImgLoc.call($this, colorBarL2, rgbBar - 520);\n            setImgLoc.call($this, colorBarL3, rgbBar);\n            setImgLoc.call($this, colorBarL4, rgbBar - 260);\n            setImgLoc.call($this, colorBarL6, 260);\n            setAlpha.call($this, colorBarL6, 100);\n          }, 0);\n          break;\n        }\n        if (active.val('ahex') == null) return;\n        activeColorChanged.call($this, active);\n      }\n      // Update color when user changes text values\n      function activeColorChanged (ui, context) {\n        if (context == null || (context !== colorBar && context !== colorMap)) positionMapAndBarArrows.call($this, ui, context);\n        setTimeout(function () {\n          updatePreview.call($this, ui);\n          updateMapVisuals.call($this, ui);\n          updateBarVisuals.call($this, ui);\n        }, 0);\n      }\n      // user has dragged the ColorMap pointer\n      function mapValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorMap && active.val() == null) return;\n        const xy = ui.val('all');\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('sv', {s: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 's':\n        case 'a':\n          active.val('hv', {h: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 'v':\n          active.val('hs', {h: xy.x, s: 100 - xy.y}, context);\n          break;\n        case 'r':\n          active.val('gb', {g: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'g':\n          active.val('rb', {r: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'b':\n          active.val('rg', {r: xy.x, g: 255 - xy.y}, context);\n          break;\n        }\n      }\n      // user has dragged the ColorBar slider\n      function colorBarValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorBar && active.val() == null) return;\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('h', {h: 360 - ui.val('y')}, context);\n          break;\n        case 's':\n          active.val('s', {s: 100 - ui.val('y')}, context);\n          break;\n        case 'v':\n          active.val('v', {v: 100 - ui.val('y')}, context);\n          break;\n        case 'r':\n          active.val('r', {r: 255 - ui.val('y')}, context);\n          break;\n        case 'g':\n          active.val('g', {g: 255 - ui.val('y')}, context);\n          break;\n        case 'b':\n          active.val('b', {b: 255 - ui.val('y')}, context);\n          break;\n        case 'a':\n          active.val('a', 255 - ui.val('y'), context);\n          break;\n        }\n      }\n      // position map and bar arrows to match current color\n      function positionMapAndBarArrows (ui, context) {\n        if (context !== colorMap) {\n          switch (settings.color.mode) {\n          case 'h':\n            const sv = ui.val('sv');\n            colorMap.val('xy', {x: sv != null ? sv.s : 100, y: 100 - (sv != null ? sv.v : 100)}, context);\n            break;\n          case 's':\n          case 'a':\n            const hv = ui.val('hv');\n            colorMap.val('xy', {x: (hv && hv.h) || 0, y: 100 - (hv != null ? hv.v : 100)}, context);\n            break;\n          case 'v':\n            const hs = ui.val('hs');\n            colorMap.val('xy', {x: (hs && hs.h) || 0, y: 100 - (hs != null ? hs.s : 100)}, context);\n            break;\n          case 'r':\n            const bg = ui.val('bg');\n            colorMap.val('xy', {x: (bg && bg.b) || 0, y: 255 - ((bg && bg.g) || 0)}, context);\n            break;\n          case 'g':\n            const br = ui.val('br');\n            colorMap.val('xy', {x: (br && br.b) || 0, y: 255 - ((br && br.r) || 0)}, context);\n            break;\n          case 'b':\n            const rg = ui.val('rg');\n            colorMap.val('xy', {x: (rg && rg.r) || 0, y: 255 - ((rg && rg.g) || 0)}, context);\n            break;\n          }\n        }\n        if (context !== colorBar) {\n          switch (settings.color.mode) {\n          case 'h':\n            colorBar.val('y', 360 - (ui.val('h') || 0), context);\n            break;\n          case 's':\n            const s = ui.val('s');\n            colorBar.val('y', 100 - (s != null ? s : 100), context);\n            break;\n          case 'v':\n            const v = ui.val('v');\n            colorBar.val('y', 100 - (v != null ? v : 100), context);\n            break;\n          case 'r':\n            colorBar.val('y', 255 - (ui.val('r') || 0), context);\n            break;\n          case 'g':\n            colorBar.val('y', 255 - (ui.val('g') || 0), context);\n            break;\n          case 'b':\n            colorBar.val('y', 255 - (ui.val('b') || 0), context);\n            break;\n          case 'a':\n            const a = ui.val('a');\n            colorBar.val('y', 255 - (a != null ? a : 255), context);\n            break;\n          }\n        }\n      }\n      function updatePreview (ui) {\n        try {\n          const all = ui.val('all');\n          activePreview.css({backgroundColor: (all && '#' + all.hex) || 'transparent'});\n          setAlpha.call($this, activePreview, (all && toFixedNumeric((all.a * 100) / 255, 4)) || 0);\n        } catch (e) { }\n      }\n      function updateMapVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h':\n          setBG.call($this, colorMapDiv, new Color({h: ui.val('h') || 0, s: 100, v: 100}).val('hex'));\n          break;\n        case 's':\n        case 'a':\n          const s = ui.val('s');\n          setAlpha.call($this, colorMapL2, 100 - (s != null ? s : 100));\n          break;\n        case 'v':\n          const v = ui.val('v');\n          setAlpha.call($this, colorMapL1, v != null ? v : 100);\n          break;\n        case 'r':\n          setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));\n          break;\n        case 'g':\n          setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));\n          break;\n        case 'b':\n          setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));\n          break;\n        }\n        const a = ui.val('a');\n        setAlpha.call($this, colorMapL3, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n      }\n      function updateBarVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h':\n          const a = ui.val('a');\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n          break;\n        case 's':\n          const hva = ui.val('hva'),\n            saturatedColor = new Color({h: (hva && hva.h) || 0, s: 100, v: hva != null ? hva.v : 100});\n          setBG.call($this, colorBarDiv, saturatedColor.val('hex'));\n          setAlpha.call($this, colorBarL2, 100 - (hva != null ? hva.v : 100));\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - ((hva && hva.a) || 0)) * 100) / 255, 4));\n          break;\n        case 'v':\n          const hsa = ui.val('hsa'),\n            valueColor = new Color({h: (hsa && hsa.h) || 0, s: hsa != null ? hsa.s : 100, v: 100});\n          setBG.call($this, colorBarDiv, valueColor.val('hex'));\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - ((hsa && hsa.a) || 0)) * 100) / 255, 4));\n          break;\n        case 'r':\n        case 'g':\n        case 'b':\n          const rgba = ui.val('rgba');\n          let hValue = 0, vValue = 0;\n          if (settings.color.mode === 'r') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          } else if (settings.color.mode === 'g') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.r) || 0;\n          } else if (settings.color.mode === 'b') {\n            hValue = (rgba && rgba.r) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          }\n          const middle = vValue > hValue ? hValue : vValue;\n          setAlpha.call($this, colorBarL2, hValue > vValue ? toFixedNumeric(((hValue - vValue) / (255 - vValue)) * 100, 4) : 0);\n          setAlpha.call($this, colorBarL3, vValue > hValue ? toFixedNumeric(((vValue - hValue) / (255 - hValue)) * 100, 4) : 0);\n          setAlpha.call($this, colorBarL4, toFixedNumeric((middle / 255) * 100, 4));\n          setAlpha.call($this, colorBarL5, toFixedNumeric(((255 - ((rgba && rgba.a) || 0)) * 100) / 255, 4));\n          break;\n        case 'a': {\n          const a = ui.val('a');\n          setBG.call($this, colorBarDiv, ui.val('hex') || '000000');\n          setAlpha.call($this, colorBarL5, a != null ? 0 : 100);\n          setAlpha.call($this, colorBarL6, a != null ? 100 : 0);\n          break;\n        }\n        }\n      }\n      function setBG (el, c) {\n        el.css({backgroundColor: (c && c.length === 6 && '#' + c) || 'transparent'});\n      }\n      function setImg (img, src) {\n        if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {\n          img.attr('pngSrc', src);\n          img.css({backgroundImage: 'none', filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\')'});\n        } else img.css({backgroundImage: 'url(\\'' + src + '\\')'});\n      }\n      function setImgLoc (img, y) {\n        img.css({top: y + 'px'});\n      }\n      function setAlpha (obj, alpha) {\n        obj.css({visibility: alpha > 0 ? 'visible' : 'hidden'});\n        if (alpha > 0 && alpha < 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (src != null && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'});\n            } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n          } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n        } else if (alpha === 0 || alpha === 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (src != null && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\')'});\n            } else obj.css({opacity: ''});\n          } else obj.css({opacity: ''});\n        }\n      }\n      // revert color to original color when opened\n      function revertColor () {\n        color.active.val('ahex', color.current.val('ahex'));\n      }\n      // commit the color changes\n      function commitColor () {\n        color.current.val('ahex', color.active.val('ahex'));\n      }\n      function radioClicked (e) {\n        $(this).parents('tbody:first').find('input:radio[value!=\"' + e.target.value + '\"]').removeAttr('checked');\n        setColorMode.call($this, e.target.value);\n      }\n      function currentClicked () {\n        revertColor.call($this);\n      }\n      function cancelClicked () {\n        revertColor.call($this);\n        settings.window.expandable && hide.call($this);\n        typeof cancelCallback === 'function' && cancelCallback.call($this, color.active, cancelButton);\n      }\n      function okClicked () {\n        commitColor.call($this);\n        settings.window.expandable && hide.call($this);\n        typeof commitCallback === 'function' && commitCallback.call($this, color.active, okButton);\n      }\n      function iconImageClicked () {\n        show.call($this);\n      }\n      function currentColorChanged (ui, context) {\n        const hex = ui.val('hex');\n        currentPreview.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call($this, currentPreview, toFixedNumeric(((ui.val('a') || 0) * 100) / 255, 4));\n      }\n      function expandableColorChanged (ui, context) {\n        const hex = ui.val('hex');\n        const va = ui.val('va');\n        iconColor.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call($this, iconAlpha, toFixedNumeric(((255 - ((va && va.a) || 0)) * 100) / 255, 4));\n        if (settings.window.bindToInput && settings.window.updateInputColor) {\n          settings.window.input.css({\n            backgroundColor: (hex && '#' + hex) || 'transparent',\n            color: va == null || va.v > 75 ? '#000000' : '#ffffff'\n          });\n        }\n      }\n      function moveBarMouseDown (e) {\n        // const {element} = settings.window, // local copies for YUI compressor\n        //     {page} = settings.window;\n        elementStartX = parseInt(container.css('left'));\n        elementStartY = parseInt(container.css('top'));\n        pageStartX = e.pageX;\n        pageStartY = e.pageY;\n        // bind events to document to move window - we will unbind these on mouseup\n        $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);\n        e.preventDefault(); // prevent attempted dragging of the column\n      }\n      function documentMouseMove (e) {\n        container.css({left: elementStartX - (pageStartX - e.pageX) + 'px', top: elementStartY - (pageStartY - e.pageY) + 'px'});\n        if (settings.window.expandable && !$.support.boxModel) container.prev().css({left: container.css('left'), top: container.css('top')});\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      function documentMouseUp (e) {\n        $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      function quickPickClicked (e) {\n        e.preventDefault();\n        e.stopPropagation();\n        color.active.val('ahex', $(this).attr('title') || null, e.target);\n        return false;\n      }\n      function show () {\n        color.current.val('ahex', color.active.val('ahex'));\n        function attachIFrame () {\n          if (!settings.window.expandable || $.support.boxModel) return;\n          const table = container.find('table:first');\n          container.before('<iframe/>');\n          container.prev().css({width: table.width(), height: container.height(), opacity: 0, position: 'absolute', left: container.css('left'), top: container.css('top')});\n        }\n        if (settings.window.expandable) {\n          $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n          container.css({zIndex: 20});\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeIn(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'slide':\n          container.slideDown(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'show':\n        default:\n          container.show(settings.window.effects.speed.show, attachIFrame);\n          break;\n        }\n      }\n      function hide () {\n        function removeIFrame () {\n          if (settings.window.expandable) container.css({zIndex: 10});\n          if (!settings.window.expandable || $.support.boxModel) return;\n          container.prev().remove();\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeOut(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'slide':\n          container.slideUp(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'show':\n        default:\n          container.hide(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        }\n      }\n      function initialize () {\n        const win = settings.window,\n          popup = win.expandable ? $($this).next().find('.Container:first') : null;\n        container = win.expandable ? $('<div/>') : $($this);\n        container.addClass('jPicker Container');\n        if (win.expandable) container.hide();\n        container.get(0).onselectstart = function (event) { if (event.target.nodeName.toLowerCase() !== 'input') return false; };\n        // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and\n        // this control really is tabular data, so I believe it is the right move\n        const all = color.active.val('all');\n        if (win.alphaPrecision < 0) win.alphaPrecision = 0;\n        else if (win.alphaPrecision > 2) win.alphaPrecision = 2;\n        const controlHtml = `<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ${win.expandable ? `<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>` : ''}\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">${win.title || localization.text.title}</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"${images.clientPath + images.colorMap.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"${images.clientPath + images.colorBar.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">${localization.text.newColor}<div><span class=\"Active\" title=\"${localization.tooltips.colors.newColor}\">&nbsp;</span><span class=\"Current\" title=\"${localization.tooltips.colors.currentColor}\">&nbsp;</span></div>${localization.text.currentColor}</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"${localization.text.ok}\" title=\"${localization.tooltips.buttons.ok}\"/><input type=\"button\" class=\"Cancel\" value=\"${localization.text.cancel}\" title=\"${localization.tooltips.buttons.cancel}\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.hue.radio}\"><input type=\"radio\" value=\"h\"${settings.color.mode === 'h' ? ' checked=\"checked\"' : ''}/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.h : ''}\" title=\"${localization.tooltips.hue.textbox}\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.saturation.radio}\"><input type=\"radio\" value=\"s\"${settings.color.mode === 's' ? ' checked=\"checked\"' : ''}/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.s : ''}\" title=\"${localization.tooltips.saturation.textbox}\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.value.radio}\"><input type=\"radio\" value=\"v\"${settings.color.mode === 'v' ? ' checked=\"checked\"' : ''}/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.v : ''}\" title=\"${localization.tooltips.value.textbox}\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.red.radio}\"><input type=\"radio\" value=\"r\"${settings.color.mode === 'r' ? ' checked=\"checked\"' : ''}/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.r : ''}\" title=\"${localization.tooltips.red.textbox}\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.green.radio}\"><input type=\"radio\" value=\"g\"${settings.color.mode === 'g' ? ' checked=\"checked\"' : ''}/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.g : ''}\" title=\"${localization.tooltips.green.textbox}\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.blue.radio}\"><input type=\"radio\" value=\"b\"${settings.color.mode === 'b' ? ' checked=\"checked\"' : ''}/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${all != null ? all.b : ''}\" title=\"${localization.tooltips.blue.textbox}\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">${win.alphaSupport ? `<label title=\"${localization.tooltips.alpha.radio}\"><input type=\"radio\" value=\"a\"${settings.color.mode === 'a' ? ' checked=\"checked\"' : ''}/>A:</label>` : '&nbsp;'}</td>\n              <td class=\"Text\">${win.alphaSupport ? `<input type=\"text\" maxlength=\"${3 + win.alphaPrecision}\" value=\"${all != null ? toFixedNumeric((all.a * 100) / 255, win.alphaPrecision) : ''}\" title=\"${localization.tooltips.alpha.textbox}\"/>&nbsp;%` : '&nbsp;'}</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"${localization.tooltips.hex.textbox}\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"${all != null ? all.hex : ''}\"/></label>${win.alphaSupport ? `<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"${all != null ? all.ahex.substring(6) : ''}\" title=\"${localization.tooltips.hex.alpha}\"/></td>` : '&nbsp;'}\n            </tr>\n          </tbody></table>`;\n        if (win.expandable) {\n          container.html(controlHtml);\n          if (!$(document.body).children('div.jPicker.Container').length) {\n            $(document.body).prepend(container);\n          } else {\n            $(document.body).children('div.jPicker.Container:last').after(container);\n          }\n          container.mousedown(\n            function () {\n              $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n              container.css({zIndex: 20});\n            });\n          container.css( // positions must be set and display set to absolute before source code injection or IE will size the container to fit the window\n            {\n              left:\n                win.position.x === 'left'\n                  ? (popup.offset().left - 530 - (win.position.y === 'center' ? 25 : 0)) + 'px'\n                  : win.position.x === 'center'\n                    ? (popup.offset().left - 260) + 'px'\n                    : win.position.x === 'right'\n                      ? (popup.offset().left - 10 + (win.position.y === 'center' ? 25 : 0)) + 'px'\n                      : win.position.x === 'screenCenter'\n                        ? (($(document).width() >> 1) - 260) + 'px'\n                        : (popup.offset().left + parseInt(win.position.x)) + 'px',\n              position: 'absolute',\n              top: win.position.y === 'top'\n                ? (popup.offset().top - 312) + 'px'\n                : win.position.y === 'center'\n                  ? (popup.offset().top - 156) + 'px'\n                  : win.position.y === 'bottom'\n                    ? (popup.offset().top + 25) + 'px'\n                    : (popup.offset().top + parseInt(win.position.y)) + 'px'\n            });\n        } else {\n          container = $($this);\n          container.html(controlHtml);\n        }\n        // initialize the objects to the source code just injected\n        const tbody = container.find('tbody:first');\n        colorMapDiv = tbody.find('div.Map:first');\n        colorBarDiv = tbody.find('div.Bar:first');\n        const MapMaps = colorMapDiv.find('span');\n        const BarMaps = colorBarDiv.find('span');\n        colorMapL1 = MapMaps.filter('.Map1:first');\n        colorMapL2 = MapMaps.filter('.Map2:first');\n        colorMapL3 = MapMaps.filter('.Map3:first');\n        colorBarL1 = BarMaps.filter('.Map1:first');\n        colorBarL2 = BarMaps.filter('.Map2:first');\n        colorBarL3 = BarMaps.filter('.Map3:first');\n        colorBarL4 = BarMaps.filter('.Map4:first');\n        colorBarL5 = BarMaps.filter('.Map5:first');\n        colorBarL6 = BarMaps.filter('.Map6:first');\n        // create color pickers and maps\n        colorMap = new Slider(colorMapDiv,\n          {\n            map: {\n              width: images.colorMap.width,\n              height: images.colorMap.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorMap.arrow.file,\n              width: images.colorMap.arrow.width,\n              height: images.colorMap.arrow.height\n            }\n          }\n        );\n        colorMap.bind(mapValueChanged);\n        colorBar = new Slider(colorBarDiv,\n          {\n            map: {\n              width: images.colorBar.width,\n              height: images.colorBar.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorBar.arrow.file,\n              width: images.colorBar.arrow.width,\n              height: images.colorBar.arrow.height\n            }\n          }\n        );\n        colorBar.bind(colorBarValueChanged);\n        colorPicker = new ColorValuePicker(\n          tbody,\n          color.active,\n          win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision\n        );\n        const hex = all != null ? all.hex : null,\n          preview = tbody.find('.Preview'),\n          button = tbody.find('.Button');\n        activePreview = preview.find('.Active:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        currentPreview = preview.find('.Current:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'}).bind('click', currentClicked);\n        setAlpha.call($this, currentPreview, toFixedNumeric((color.current.val('a') * 100) / 255, 4));\n        okButton = button.find('.Ok:first').bind('click', okClicked);\n        cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);\n        grid = button.find('.Grid:first');\n        setTimeout(function () {\n          setImg.call($this, colorMapL1, images.clientPath + 'Maps.png');\n          setImg.call($this, colorMapL2, images.clientPath + 'Maps.png');\n          setImg.call($this, colorMapL3, images.clientPath + 'map-opacity.png');\n          setImg.call($this, colorBarL1, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL2, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL3, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL4, images.clientPath + 'Bars.png');\n          setImg.call($this, colorBarL5, images.clientPath + 'bar-opacity.png');\n          setImg.call($this, colorBarL6, images.clientPath + 'AlphaBar.png');\n          setImg.call($this, preview.find('div:first'), images.clientPath + 'preview-opacity.png');\n        }, 0);\n        tbody.find('td.Radio input').bind('click', radioClicked);\n        // initialize quick list\n        if (color.quickList && color.quickList.length > 0) {\n          let html = '';\n          for (let i = 0; i < color.quickList.length; i++) {\n            /* if default colors are hex strings, change them to color objects */\n            if ((typeof (color.quickList[i])).toString().toLowerCase() === 'string') color.quickList[i] = new Color({hex: color.quickList[i]});\n            const alpha = color.quickList[i].val('a');\n            let ahex = color.quickList[i].val('ahex');\n            if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';\n            const quickHex = color.quickList[i].val('hex');\n            if (!ahex) ahex = '00000000';\n            html += '<span class=\"QuickColor\"' + (' title=\"#' + ahex + '\"') + ' style=\"background-color:' + ((quickHex && '#' + quickHex) || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '\">&nbsp;</span>';\n          }\n          setImg.call($this, grid, images.clientPath + 'bar-opacity.png');\n          grid.html(html);\n          grid.find('.QuickColor').click(quickPickClicked);\n        }\n        setColorMode.call($this, settings.color.mode);\n        color.active.bind(activeColorChanged);\n        typeof liveCallback === 'function' && color.active.bind(liveCallback);\n        color.current.bind(currentColorChanged);\n        // bind to input\n        if (win.expandable) {\n          $this.icon = popup.parents('.Icon:first');\n          iconColor = $this.icon.find('.Color:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n          iconAlpha = $this.icon.find('.Alpha:first');\n          setImg.call($this, iconAlpha, images.clientPath + 'bar-opacity.png');\n          setAlpha.call($this, iconAlpha, toFixedNumeric(((255 - (all != null ? all.a : 0)) * 100) / 255, 4));\n          iconImage = $this.icon.find('.Image:first').css({\n            backgroundImage: 'url(\\'' + images.clientPath + images.picker.file + '\\')'\n          }).bind('click', iconImageClicked);\n          if (win.bindToInput && win.updateInputColor) {\n            win.input.css({\n              backgroundColor: (hex && '#' + hex) || 'transparent',\n              color: all == null || all.v > 75 ? '#000000' : '#ffffff'\n            });\n          }\n          moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);\n          color.active.bind(expandableColorChanged);\n        } else show.call($this);\n      }\n      function destroy () {\n        container.find('td.Radio input').unbind('click', radioClicked);\n        currentPreview.unbind('click', currentClicked);\n        cancelButton.unbind('click', cancelClicked);\n        okButton.unbind('click', okClicked);\n        if (settings.window.expandable) {\n          iconImage.unbind('click', iconImageClicked);\n          moveBar.unbind('mousedown', moveBarMouseDown);\n          $this.icon = null;\n        }\n        container.find('.QuickColor').unbind('click', quickPickClicked);\n        colorMapDiv = null;\n        colorBarDiv = null;\n        colorMapL1 = null;\n        colorMapL2 = null;\n        colorMapL3 = null;\n        colorBarL1 = null;\n        colorBarL2 = null;\n        colorBarL3 = null;\n        colorBarL4 = null;\n        colorBarL5 = null;\n        colorBarL6 = null;\n        colorMap.destroy();\n        colorMap = null;\n        colorBar.destroy();\n        colorBar = null;\n        colorPicker.destroy();\n        colorPicker = null;\n        activePreview = null;\n        currentPreview = null;\n        okButton = null;\n        cancelButton = null;\n        grid = null;\n        commitCallback = null;\n        cancelCallback = null;\n        liveCallback = null;\n        container.html('');\n        for (let i = 0; i < List.length; i++) {\n          if (List[i] === $this) {\n            List.splice(i, 1);\n          }\n        }\n      }\n      const {images, localization} = settings; // local copies for YUI compressor\n      const color = {\n        active: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active\n          })\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        current: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active})\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        quickList: settings.color.quickList\n      };\n\n      let elementStartX = null, // Used to record the starting css positions for dragging the control\n        elementStartY = null,\n        pageStartX = null, // Used to record the mousedown coordinates for dragging the control\n        pageStartY = null,\n        container = null,\n        colorMapDiv = null,\n        colorBarDiv = null,\n        colorMapL1 = null, // different layers of colorMap and colorBar\n        colorMapL2 = null,\n        colorMapL3 = null,\n        colorBarL1 = null,\n        colorBarL2 = null,\n        colorBarL3 = null,\n        colorBarL4 = null,\n        colorBarL5 = null,\n        colorBarL6 = null,\n        colorMap = null, // color maps\n        colorBar = null,\n        colorPicker = null,\n        activePreview = null, // color boxes above the radio buttons\n        currentPreview = null,\n        okButton = null,\n        cancelButton = null,\n        grid = null, // preset colors grid\n        iconColor = null, // iconColor for popup icon\n        iconAlpha = null, // iconAlpha for popup icon\n        iconImage = null, // iconImage popup icon\n        moveBar = null, // drag bar\n        commitCallback = typeof $arguments[1] === 'function' ? $arguments[1] : null,\n        liveCallback = typeof $arguments[2] === 'function' ? $arguments[2] : null,\n        cancelCallback = typeof $arguments[3] === 'function' ? $arguments[3] : null;\n\n      $.extend(true, $this, {\n        // public properties, methods, and callbacks\n        commitCallback, // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks \"OK\"\n        liveCallback, // liveCallback function can be overridden to return the selected color to a method you specify in live mode (continuous update)\n        cancelCallback, // cancelCallback function can be overridden to a method you specify when the user clicks \"Cancel\"\n        color,\n        show,\n        hide,\n        destroy // destroys this control entirely, removing all events and objects, and removing itself from the List\n      });\n      List.push($this);\n      setTimeout(function () {\n        initialize.call($this);\n      }, 0);\n    });\n  };\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsIconInfo\n  * @property {string} file Color Map/Color Bar/Color Picker arrow icon\n  * @property {Float} width\n  * @property {Float} height\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsImagesDimensionsArrow\n  * @property {Float} width\n  * @property {Float} height\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} arrow\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsRadioTextboxLocale\n  * @property {string} radio\n  * @property {string} textbox\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptions\n  * @property {PlainObject} window\n  * @property {string|null} window.title Any title for the jPicker window itself - displays\n  * \"Drag Markers To Pick A Color\" if left null\n  * @property {PlainObject} window.effects\n  * @property {\"slide\"|\"show\"|\"fade\"} window.effects.type Effect used to show/hide an expandable picker\n  * @property {PlainObject} window.effects.speed\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.show Duration of \"show\" effect. Time in milliseconds.\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.hide Duration of \"hide\" effect. Time in milliseconds\n  * @property {PlainObject} window.position\n  * @property {\"left\"|\"center\"|\"right\"|\"screenCenter\"|Float} window.position.x Relative px value\n  * @property {\"top\"|\"bottom\"|\"center\"|Float} window.position.y Relative px value\n  * @property {boolean} window.expandable Defaults to large static picker - set to `true` to make an expandable\n  * picker (small icon with popup) - set automatically when binded to input element\n  * @property {boolean} window.liveUpdate Set `false` if you want the user to have to click \"OK\" before the\n  * binded input box updates values (always `true` for expandable picker)\n  * @property {boolean} window.alphaSupport Set to `true` to enable alpha picking\n  * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do\n  * not map directly to percentage integers - range 0-2\n  * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing\n  * @property {PlainObject} color\n  * @property {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} color.mode Symbols stand for \"h\" (hue), \"s\" (saturation), \"v\" (value), \"r\" (red), \"g\" (green), \"b\" (blue), \"a\" (alpha)\n  * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {Color[]|string[]} color.quickList The quick pick color list\n  * Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {PlainObject} images\n  * @property {string} images.clientPath Path to image files\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorMap\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorBar\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} images.picker\n  * @property {PlainObject} localization alter these to change the text presented by the picker (e.g. different language)\n  * @property {PlainObject} localization.text\n  * @property {string} localization.text.title\n  * @property {string} localization.text.newColor\n  * @property {string} localization.text.currentColor\n  * @property {string} localization.text.ok\n  * @property {string} localization.text.cancel\n  * @property {PlainObject} localization.tooltips\n  * @property {PlainObject} localization.tooltips.colors\n  * @property {string} localization.tooltips.colors.newColor\n  * @property {string} localization.tooltips.colors.currentColor\n  * @property {PlainObject} localization.tooltips.buttons\n  * @property {string} localization.tooltips.buttons.ok\n  * @property {string} localization.tooltips.buttons.cancel\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.hue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.saturation\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.value\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.red\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.green\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.blue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.alpha\n  * @property {PlainObject} localization.tooltips.hex\n  * @property {string} localization.tooltips.hex.textbox\n  * @property {string} localization.tooltips.hex.alpha\n  */\n  /**\n  * jPicker defaults - you can change anything in this section (such as the\n  * clientPath to your images) without fear of breaking the program\n  * @namespace {external:jQuery.fn.jPickerOptions} defaults\n  * @memberof external:jQuery.fn.$.fn.jPicker\n  * @borrows external:jQuery.fn.jPickerOptions as external:jQuery.fn.jPicker.defaults\n  * @see Source for all of the values\n  */\n  $.fn.jPicker.defaults = {\n    window: {\n      title: null,\n      effects: {\n        type: 'slide',\n        speed: {\n          show: 'slow',\n          hide: 'fast'\n        }\n      },\n      position: {\n        x: 'screenCenter',\n        y: 'top'\n      },\n      expandable: false,\n      liveUpdate: true,\n      alphaSupport: false,\n      alphaPrecision: 0,\n      updateInputColor: true\n    },\n    color: {\n      mode: 'h',\n      active: new Color({ahex: '#ffcc00ff'}),\n      quickList: [\n        new Color({h: 360, s: 33, v: 100}),\n        new Color({h: 360, s: 66, v: 100}),\n        new Color({h: 360, s: 100, v: 100}),\n        new Color({h: 360, s: 100, v: 75}),\n        new Color({h: 360, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 100}),\n        new Color({h: 30, s: 33, v: 100}),\n        new Color({h: 30, s: 66, v: 100}),\n        new Color({h: 30, s: 100, v: 100}),\n        new Color({h: 30, s: 100, v: 75}),\n        new Color({h: 30, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 90}),\n        new Color({h: 60, s: 33, v: 100}),\n        new Color({h: 60, s: 66, v: 100}),\n        new Color({h: 60, s: 100, v: 100}),\n        new Color({h: 60, s: 100, v: 75}),\n        new Color({h: 60, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 80}),\n        new Color({h: 90, s: 33, v: 100}),\n        new Color({h: 90, s: 66, v: 100}),\n        new Color({h: 90, s: 100, v: 100}),\n        new Color({h: 90, s: 100, v: 75}),\n        new Color({h: 90, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 70}),\n        new Color({h: 120, s: 33, v: 100}),\n        new Color({h: 120, s: 66, v: 100}),\n        new Color({h: 120, s: 100, v: 100}),\n        new Color({h: 120, s: 100, v: 75}),\n        new Color({h: 120, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 60}),\n        new Color({h: 150, s: 33, v: 100}),\n        new Color({h: 150, s: 66, v: 100}),\n        new Color({h: 150, s: 100, v: 100}),\n        new Color({h: 150, s: 100, v: 75}),\n        new Color({h: 150, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 50}),\n        new Color({h: 180, s: 33, v: 100}),\n        new Color({h: 180, s: 66, v: 100}),\n        new Color({h: 180, s: 100, v: 100}),\n        new Color({h: 180, s: 100, v: 75}),\n        new Color({h: 180, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 40}),\n        new Color({h: 210, s: 33, v: 100}),\n        new Color({h: 210, s: 66, v: 100}),\n        new Color({h: 210, s: 100, v: 100}),\n        new Color({h: 210, s: 100, v: 75}),\n        new Color({h: 210, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 30}),\n        new Color({h: 240, s: 33, v: 100}),\n        new Color({h: 240, s: 66, v: 100}),\n        new Color({h: 240, s: 100, v: 100}),\n        new Color({h: 240, s: 100, v: 75}),\n        new Color({h: 240, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 20}),\n        new Color({h: 270, s: 33, v: 100}),\n        new Color({h: 270, s: 66, v: 100}),\n        new Color({h: 270, s: 100, v: 100}),\n        new Color({h: 270, s: 100, v: 75}),\n        new Color({h: 270, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 10}),\n        new Color({h: 300, s: 33, v: 100}),\n        new Color({h: 300, s: 66, v: 100}),\n        new Color({h: 300, s: 100, v: 100}),\n        new Color({h: 300, s: 100, v: 75}),\n        new Color({h: 300, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 0}),\n        new Color({h: 330, s: 33, v: 100}),\n        new Color({h: 330, s: 66, v: 100}),\n        new Color({h: 330, s: 100, v: 100}),\n        new Color({h: 330, s: 100, v: 75}),\n        new Color({h: 330, s: 100, v: 50}),\n        new Color()\n      ]\n    },\n    images: {\n      clientPath: '/jPicker/images/',\n      colorMap: {\n        width: 256,\n        height: 256,\n        arrow: {\n          file: 'mappoint.gif',\n          width: 15,\n          height: 15\n        }\n      },\n      colorBar: {\n        width: 20,\n        height: 256,\n        arrow: {\n          file: 'rangearrows.gif',\n          width: 20,\n          height: 7\n        }\n      },\n      picker: {\n        file: 'picker.gif',\n        width: 25,\n        height: 24\n      }\n    },\n    localization: {\n      text: {\n        title: 'Drag Markers To Pick A Color',\n        newColor: 'new',\n        currentColor: 'current',\n        ok: 'OK',\n        cancel: 'Cancel'\n      },\n      tooltips: {\n        colors: {\n          newColor: 'New Color - Press &ldquo;OK&rdquo; To Commit',\n          currentColor: 'Click To Revert To Original Color'\n        },\n        buttons: {\n          ok: 'Commit To This Color Selection',\n          cancel: 'Cancel And Revert To Original Color'\n        },\n        hue: {\n          radio: 'Set To &ldquo;Hue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Hue&rdquo; Value (0-360&deg;)'\n        },\n        saturation: {\n          radio: 'Set To &ldquo;Saturation&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Saturation&rdquo; Value (0-100%)'\n        },\n        value: {\n          radio: 'Set To &ldquo;Value&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Value&rdquo; Value (0-100%)'\n        },\n        red: {\n          radio: 'Set To &ldquo;Red&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Red&rdquo; Value (0-255)'\n        },\n        green: {\n          radio: 'Set To &ldquo;Green&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Green&rdquo; Value (0-255)'\n        },\n        blue: {\n          radio: 'Set To &ldquo;Blue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Blue&rdquo; Value (0-255)'\n        },\n        alpha: {\n          radio: 'Set To &ldquo;Alpha&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Alpha&rdquo; Value (0-100)'\n        },\n        hex: {\n          textbox: 'Enter A &ldquo;Hex&rdquo; Color Value (#000000-#ffffff)',\n          alpha: 'Enter A &ldquo;Alpha&rdquo; Value (#00-#ff)'\n        }\n      }\n    }\n  };\n  return $;\n};\n\nexport default jPicker;\n","/* globals jQuery */\n/**\n * Localizing script for SVG-edit UI\n * @module locale\n * @license MIT\n *\n * @copyright 2010 Narendra Sisodya\n * @copyright 2010 Alexis Deveria\n *\n */\n\n/**\n * Used, for example, in the ImageLibs extension, to present libraries (with name/URL/description) in order\n * @typedef {GenericArray.<module:locale.LocaleStrings>} module:locale.LocaleArray\n*/\n/**\n * The string keys of the object are two-letter language codes\n * @tutorial LocaleDocs\n * @typedef {PlainObject.<string, string|module:locale.LocaleStrings|module:locale.LocaleArray>} module:locale.LocaleStrings\n */\n// keyed to an array of objects with \"id\" and \"title\" or \"textContent\" properties\n/**\n * @typedef {PlainObject.<string, string>} module:locale.LocaleSelectorValue\n */\n\nimport {importSetGlobalDefault} from '../external/dynamic-import-polyfill/importModule.js';\n\nconst $ = jQuery;\n\nlet langParam;\n\n/**\n* @param {\"content\"|\"title\"} type\n* @param {module:locale.LocaleSelectorValue} obj\n* @param {boolean} ids\n* @returns {undefined}\n*/\nexport const setStrings = function (type, obj, ids) {\n  // Root element to look for element from\n  const parent = $('#svg_editor').parent();\n  Object.entries(obj).forEach(([sel, val]) => {\n    if (!val) { console.log(sel); }\n\n    if (ids) { sel = '#' + sel; }\n    const $elem = parent.find(sel);\n    if ($elem.length) {\n      const elem = parent.find(sel)[0];\n\n      switch (type) {\n      case 'content':\n        [...elem.childNodes].some((node) => {\n          if (node.nodeType === 3 && node.textContent.trim()) {\n            node.textContent = val;\n            return true;\n          }\n        });\n        break;\n\n      case 'title':\n        elem.title = val;\n        break;\n      }\n    } else {\n      console.log('Missing: ' + sel);\n    }\n  });\n};\n\n/**\n* The \"data\" property is generally set to an an array of objects with\n* \"id\" and \"title\" or \"textContent\" properties\n* @typedef {PlainObject} module:locale.AddLangExtensionLocaleData\n* @property {module:locale.LocaleStrings[]} data See {@tutorial LocaleDocs}\n*/\n\n/**\n* @interface module:locale.LocaleEditorInit\n*/\n/**\n * @function module:locale.LocaleEditorInit#addLangData\n * @param {string} langParam\n * @returns {module:locale.AddLangExtensionLocaleData}\n*/\n\nlet editor_;\n/**\n* @function init\n* @memberof module:locale\n* @param {module:locale.LocaleEditorInit} editor\n* @returns {undefined}\n*/\nexport const init = (editor) => {\n  editor_ = editor;\n};\n\n/**\n* @typedef {PlainObject} module:locale.LangAndData\n* @property {string} langParam\n* @property {module:locale.LocaleStrings} langData\n*/\n\n/**\n* @function module:locale.readLang\n* @param {module:locale.LocaleStrings} langData See {@tutorial LocaleDocs}\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @returns {Promise} Resolves to [`LangAndData`]{@link module:locale.LangAndData}\n*/\nexport const readLang = async function (langData) {\n  const more = await editor_.addLangData(langParam);\n  $.each(more, function (i, m) {\n    if (m.data) {\n      langData = $.merge(langData, m.data);\n    }\n  });\n\n  // Old locale file, do nothing for now.\n  if (!langData.tools) { return; }\n\n  const {\n    tools,\n    // misc,\n    properties, config, layers, common, ui\n  } = langData;\n\n  setStrings('content', {\n    // copyrightLabel: misc.powered_by, // Currently commented out in svg-editor.html\n    curve_segments: properties.curve_segments,\n    fitToContent: tools.fitToContent,\n    fit_to_all: tools.fit_to_all,\n    fit_to_canvas: tools.fit_to_canvas,\n    fit_to_layer_content: tools.fit_to_layer_content,\n    fit_to_sel: tools.fit_to_sel,\n\n    icon_large: config.icon_large,\n    icon_medium: config.icon_medium,\n    icon_small: config.icon_small,\n    icon_xlarge: config.icon_xlarge,\n    image_opt_embed: config.image_opt_embed,\n    image_opt_ref: config.image_opt_ref,\n    includedImages: config.included_images,\n\n    largest_object: tools.largest_object,\n\n    layersLabel: layers.layers,\n    page: tools.page,\n    relativeToLabel: tools.relativeTo,\n    selLayerLabel: layers.move_elems_to,\n    selectedPredefined: config.select_predefined,\n\n    selected_objects: tools.selected_objects,\n    smallest_object: tools.smallest_object,\n    straight_segments: properties.straight_segments,\n\n    svginfo_bg_url: config.editor_img_url + ':',\n    svginfo_bg_note: config.editor_bg_note,\n    svginfo_change_background: config.background,\n    svginfo_dim: config.doc_dims,\n    svginfo_editor_prefs: config.editor_prefs,\n    svginfo_height: common.height,\n    svginfo_icons: config.icon_size,\n    svginfo_image_props: config.image_props,\n    svginfo_lang: config.language,\n    svginfo_title: config.doc_title,\n    svginfo_width: common.width,\n\n    tool_docprops_cancel: common.cancel,\n    tool_docprops_save: common.ok,\n\n    tool_source_cancel: common.cancel,\n    tool_source_save: common.ok,\n\n    tool_prefs_cancel: common.cancel,\n    tool_prefs_save: common.ok,\n\n    sidepanel_handle: layers.layers.split('').join(' '),\n\n    tool_clear: tools.new_doc,\n    tool_docprops: tools.docprops,\n    tool_export: tools.export_img,\n    tool_import: tools.import_doc,\n    tool_open: tools.open_doc,\n    tool_save: tools.save_doc,\n\n    svginfo_units_rulers: config.units_and_rulers,\n    svginfo_rulers_onoff: config.show_rulers,\n    svginfo_unit: config.base_unit,\n\n    svginfo_grid_settings: config.grid,\n    svginfo_snap_onoff: config.snapping_onoff,\n    svginfo_snap_step: config.snapping_stepsize,\n    svginfo_grid_color: config.grid_color\n  }, true);\n\n  // Context menus\n  const opts = {};\n  $.each(['cut', 'copy', 'paste', 'paste_in_place', 'delete', 'group', 'ungroup', 'move_front', 'move_up', 'move_down', 'move_back'], function () {\n    opts['#cmenu_canvas a[href=\"#' + this + '\"]'] = tools[this];\n  });\n\n  $.each(['dupe', 'merge_down', 'merge_all'], function () {\n    opts['#cmenu_layers a[href=\"#' + this + '\"]'] = layers[this];\n  });\n\n  opts['#cmenu_layers a[href=\"#delete\"]'] = layers.del;\n\n  setStrings('content', opts);\n\n  setStrings('title', {\n    align_relative_to: tools.align_relative_to,\n    circle_cx: properties.circle_cx,\n    circle_cy: properties.circle_cy,\n    circle_r: properties.circle_r,\n    cornerRadiusLabel: properties.corner_radius,\n    ellipse_cx: properties.ellipse_cx,\n    ellipse_cy: properties.ellipse_cy,\n    ellipse_rx: properties.ellipse_rx,\n    ellipse_ry: properties.ellipse_ry,\n    fill_color: properties.fill_color,\n    font_family: properties.font_family,\n    idLabel: properties.id,\n    image_height: properties.image_height,\n    image_url: properties.image_url,\n    image_width: properties.image_width,\n    layer_delete: layers.del,\n    layer_down: layers.move_down,\n    layer_new: layers['new'],\n    layer_rename: layers.rename,\n    layer_moreopts: common.more_opts,\n    layer_up: layers.move_up,\n    line_x1: properties.line_x1,\n    line_x2: properties.line_x2,\n    line_y1: properties.line_y1,\n    line_y2: properties.line_y2,\n    linecap_butt: properties.linecap_butt,\n    linecap_round: properties.linecap_round,\n    linecap_square: properties.linecap_square,\n    linejoin_bevel: properties.linejoin_bevel,\n    linejoin_miter: properties.linejoin_miter,\n    linejoin_round: properties.linejoin_round,\n    main_icon: tools.main_menu,\n    palette: ui.palette_info,\n    zoom_panel: ui.zoom_level,\n    path_node_x: properties.node_x,\n    path_node_y: properties.node_y,\n    rect_height_tool: properties.rect_height,\n    rect_width_tool: properties.rect_width,\n    seg_type: properties.seg_type,\n    selLayerNames: layers.move_selected,\n    selected_x: properties.pos_x,\n    selected_y: properties.pos_y,\n    stroke_color: properties.stroke_color,\n    stroke_style: properties.stroke_style,\n    stroke_width: properties.stroke_width,\n    svginfo_title: config.doc_title,\n    text: properties.text_contents,\n    toggle_stroke_tools: ui.toggle_stroke_tools,\n    tool_add_subpath: tools.add_subpath,\n    tool_alignbottom: tools.align_bottom,\n    tool_aligncenter: tools.align_center,\n    tool_alignleft: tools.align_left,\n    tool_alignmiddle: tools.align_middle,\n    tool_alignright: tools.align_right,\n    tool_aligntop: tools.align_top,\n    tool_angle: properties.angle,\n    tool_blur: properties.blur,\n    tool_bold: properties.bold,\n    tool_circle: tools.mode_circle,\n    tool_clone: tools.clone,\n    tool_clone_multi: tools.clone,\n    tool_delete: tools.del,\n    tool_delete_multi: tools.del,\n    tool_ellipse: tools.mode_ellipse,\n    tool_fhellipse: tools.mode_fhellipse,\n    tool_fhpath: tools.mode_fhpath,\n    tool_fhrect: tools.mode_fhrect,\n    tool_font_size: properties.font_size,\n    tool_group_elements: tools.group_elements,\n    tool_make_link: tools.make_link,\n    tool_link_url: tools.set_link_url,\n    tool_image: tools.mode_image,\n    tool_italic: properties.italic,\n    tool_line: tools.mode_line,\n    tool_move_bottom: tools.move_bottom,\n    tool_move_top: tools.move_top,\n    tool_node_clone: tools.node_clone,\n    tool_node_delete: tools.node_delete,\n    tool_node_link: tools.node_link,\n    tool_opacity: properties.opacity,\n    tool_openclose_path: tools.openclose_path,\n    tool_path: tools.mode_path,\n    tool_position: tools.align_to_page,\n    tool_rect: tools.mode_rect,\n    tool_redo: tools.redo,\n    tool_reorient: tools.reorient_path,\n    tool_select: tools.mode_select,\n    tool_source: tools.source_save,\n    tool_square: tools.mode_square,\n    tool_text: tools.mode_text,\n    tool_topath: tools.to_path,\n    tool_undo: tools.undo,\n    tool_ungroup: tools.ungroup,\n    tool_wireframe: tools.wireframe_mode,\n    tool_zoom: tools.mode_zoom,\n    url_notice: tools.no_embed\n\n  }, true);\n\n  return {langParam, langData};\n};\n\n/**\n* @function module:locale.putLocale\n* @param {string} givenParam\n* @param {string[]} goodLangs\n* @param {{langPath: string}} conf\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n* @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @returns {Promise} Resolves to result of {@link module:locale.readLang}\n*/\nexport const putLocale = async function (givenParam, goodLangs, conf) {\n  if (givenParam) {\n    langParam = givenParam;\n  } else {\n    langParam = $.pref('lang');\n    if (!langParam) {\n      if (navigator.userLanguage) { // Explorer\n        langParam = navigator.userLanguage;\n      } else if (navigator.language) { // FF, Opera, ...\n        langParam = navigator.language;\n      }\n    }\n\n    console.log('Lang: ' + langParam);\n\n    // Set to English if language is not in list of good langs\n    if (!goodLangs.includes(langParam) && langParam !== 'test') {\n      langParam = 'en';\n    }\n\n    // don't bother on first run if language is English\n    // The following line prevents setLang from running\n    //    extensions which depend on updated uiStrings,\n    //    so commenting it out.\n    // if (langParam.startsWith('en')) {return;}\n  }\n\n  const url = conf.langPath + 'lang.' + langParam + '.js';\n  return readLang(\n    // Todo: Replace this with `return import(url);` when\n    //   `import()` widely supported\n    await importSetGlobalDefault(url, {\n      global: 'svgEditorLang_' + langParam.replace(/-/g, '_')\n    })\n  );\n};\n","/* globals jQuery */\n\nimport './touch.js';\nimport {NS} from './namespaces.js';\nimport {isWebkit, isChrome, isGecko, isIE, isMac, isTouch} from './browser.js';\nimport * as Utils from './utilities.js';\nimport {getTypeMap, convertUnit, isValidUnit} from './units.js';\nimport {\n  hasCustomHandler, getCustomHandler, injectExtendedContextMenuItemsIntoDom\n} from './contextmenu.js';\nimport {importSetGlobalDefault} from './external/dynamic-import-polyfill/importModule.js';\n\nimport SvgCanvas from './svgcanvas.js';\nimport Layer from './layer.js';\n\nimport jqPluginJSHotkeys from './js-hotkeys/jquery.hotkeys.min.js';\nimport jqPluginBBQ from './jquerybbq/jquery.bbq.min.js';\nimport jqPluginSVGIcons from './svgicons/jQuery.svgIcons.js';\nimport jqPluginJGraduate from './jgraduate/jQuery.jGraduate.js';\nimport jqPluginSpinBtn from './spinbtn/jQuery.SpinButton.js';\nimport jqPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport jqPluginContextMenu from './contextmenu/jQuery.contextMenu.js';\nimport jqPluginJPicker from './jgraduate/jQuery.jPicker.js';\nimport {\n  readLang, putLocale,\n  setStrings,\n  init as localeInit\n} from './locale/locale.js';\nimport loadStylesheets from './external/load-stylesheets/index-es.js';\n\n/**\n* The main module for the visual SVG Editor\n*\n* @license MIT\n*\n* @copyright 2010 Alexis Deveria\n* 2010 Pavol Rusnak\n* 2010 Jeff Schiller\n* 2010 Narendra Sisodiya\n* 2014 Brett Zamir\n* @exports module:SVGEditor\n* @borrows module:locale.putLocale as putLocale\n* @borrows module:locale.readLang as readLang\n* @borrows module:locale.setStrings as setStrings\n*/\nconst editor = {};\n\nconst $ = [\n  jqPluginJSHotkeys, jqPluginBBQ, jqPluginSVGIcons, jqPluginJGraduate,\n  jqPluginSpinBtn, jqPluginSVG, jqPluginContextMenu, jqPluginJPicker\n].reduce(($, cb) => cb($), jQuery);\n\n/*\nif (!$.loadingStylesheets) {\n  $.loadingStylesheets = [];\n}\n*/\nconst stylesheet = 'svg-editor.css';\nif (!$.loadingStylesheets.includes(stylesheet)) {\n  $.loadingStylesheets.push(stylesheet);\n}\nconst favicon = 'images/logo.png';\nif ($.loadingStylesheets.some((item) => {\n  return !Array.isArray(item) || item[0] !== favicon;\n})) {\n  $.loadingStylesheets.push([favicon, {favicon: true}]);\n}\n\n// EDITOR PROPERTIES: (defined below)\n//    curPrefs, curConfig, canvas, storage, uiStrings\n//\n// STATE MAINTENANCE PROPERTIES\n/**\n* @type {Float}\n*/\neditor.tool_scale = 1; // Dependent on icon size, so any use to making configurable instead? Used by `jQuery.SpinButton.js`\n/**\n* @type {Integer}\n*/\neditor.exportWindowCt = 0;\n/**\n* @type {boolean}\n*/\neditor.langChanged = false;\n/**\n* @type {boolean}\n*/\neditor.showSaveWarning = false;\n/**\n * Will be set to a boolean by `ext-storage.js`\n * @type {\"ignore\"|\"waiting\"|\"closed\"}\n*/\neditor.storagePromptState = 'ignore';\n\nconst callbacks = [],\n  /**\n  * @typedef {\"s\"|\"m\"|\"l\"|\"xl\"|Float} module:SVGEditor.IconSize\n  */\n  /**\n  * Preferences\n  * @interface module:SVGEditor.Prefs\n  * @property {string} [lang=\"en\"] Two-letter language code. The language must exist in the Editor Preferences language list. Defaults to \"en\" if `locale.js` detection does not detect another language.\n  * @property {module:SVGEditor.IconSize} [iconsize=\"s\"|\"m\"] Size of the toolbar icons. Will default to 's' if the window height is smaller than the minimum height and 'm' otherwise.\n  * @property {string} [bkgd_color=\"#FFF\"] Color hex for canvas background color. Defaults to white.\n  * @property {string} [bkgd_url=\"\"] Background raster image URL. This image will fill the background of the document; useful for tracing purposes.\n  * @property {\"embed\"|\"ref\"} [img_save=\"embed\"] Defines whether included raster images should be saved as Data URIs when possible, or as URL references. Settable in the Document Properties dialog.\n  * @property {boolean} [save_notice_done=false] Used to track alert status\n  * @property {boolean} [export_notice_done=false] Used to track alert status\n  * @todo `save_notice_done` and `export_notice_done` should be changed to flags rather than preferences\n  */\n  /**\n  * @namespace {module:SVGEditor.Prefs} defaultPrefs\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Prefs}\n  */\n  // The iteration algorithm for defaultPrefs does not currently support array/objects\n  defaultPrefs = /** @lends module:SVGEditor~defaultPrefs */ {\n    // EDITOR OPTIONS (DIALOG)\n    /**\n    * Default to \"en\" if locale.js detection does not detect another language\n    */\n    lang: '',\n    /**\n    * Will default to 's' if the window height is smaller than the minimum height and\n    * 'm' otherwise\n    */\n    iconsize: '',\n    bkgd_color: '#FFF',\n    bkgd_url: '',\n    // DOCUMENT PROPERTIES (DIALOG)\n    img_save: 'embed',\n    // ALERT NOTICES\n    // Only shows in UI as far as alert notices, but useful to remember, so keeping as pref\n    save_notice_done: false,\n    export_notice_done: false\n  },\n  /**\n  * @name module:SVGEditor~defaultExtensions\n  * @type {string[]}\n  */\n  defaultExtensions = [\n    'ext-connector.js',\n    'ext-eyedropper.js',\n    'ext-grid.js',\n    'ext-imagelib.js',\n    'ext-markers.js',\n    'ext-overview_window.js',\n    'ext-panning.js',\n    'ext-polygon.js',\n    'ext-shapes.js',\n    'ext-star.js',\n    'ext-storage.js'\n  ],\n  /**\n  * @typedef {\"@default\"|string} module:SVGEditor.Stylesheet `@default` will automatically load all of the default CSS paths for SVGEditor\n  */\n  /**\n  * @typedef {GenericArray} module:SVGEditor.XYDimensions\n  * @property {Integer} length 2\n  * @property {Float} 0\n  * @property {Float} 1\n  */\n  /**\n  * @tutorial ConfigOptions\n  * @interface module:SVGEditor.Config\n  * @property {string} [canvasName=\"default\"] Used to namespace storage provided via `ext-storage.js`; you can use this if you wish to have multiple independent instances of SVG Edit on the same domain\n  * @property {boolean} [no_save_warning=false] If `true`, prevents the warning dialog box from appearing when closing/reloading the page. Mostly useful for testing.\n  * @property {string} [imgPath=\"images/\"] The path where the SVG icons are located, with trailing slash. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [langPath=\"locale/\"] The path where the language files are located, with trailing slash. Default will be changed to `../dist/locale/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [extPath=\"extensions/\"] The path used for extension files, with trailing slash. Default will be changed to `../dist/extensions/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [canvgPath=\"canvg/\"] The path used for `canvg` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [jspdfPath=\"jspdf/\"] The path used for `jsPDF` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [extIconsPath=\"extensions/\"] The path used for extension icons, with trailing slash.\n  * @property {string} [jGraduatePath=\"jgraduate/images/\"] The path where jGraduate images are located. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {boolean} [preventAllURLConfig=false] Set to `true` to override the ability for URLs to set non-content configuration (including extension config). Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [preventURLContentLoading=false] Set to `true` to override the ability for URLs to set URL-based SVG content. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [lockExtensions=false] Set to `true` to override the ability for URLs to set their own extensions; disallowed in URL setting. There is no need for this when `preventAllURLConfig` is used. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [noDefaultExtensions=false] If set to `true`, prohibits automatic inclusion of default extensions (though \"extensions\" can still be used to add back any desired default extensions along with any other extensions). This can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n  * @property {boolean} [noStorageOnLoad=false] Some interaction with `ext-storage.js`; prevent even the loading of previously saved local storage.\n  * @property {boolean} [forceStorage=false] Some interaction with `ext-storage.js`; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not (and may be required by law in some regions)\n  * @property {boolean} [emptyStorageOnDecline=false] Used by `ext-storage.js`; empty any prior storage if the user declines to store\n  * @property {string[]} [extensions=module:SVGEditor~defaultExtensions] Extensions to load on startup. Use an array in `setConfig` and comma separated file names in the URL. Extension names must begin with \"ext-\". Note that as of version 2.7, paths containing \"/\", \"\\\", or \":\", are disallowed for security reasons. Although previous versions of this list would entirely override the default list, as of version 2.7, the defaults will always be added to this explicit list unless the configuration `noDefaultExtensions` is included.\n  * @property {module:SVGEditor.Stylesheet[]} [stylesheets=[\"@default\"]] An array of required stylesheets to load in parallel; include the value `\"@default\"` within this array to ensure all default stylesheets are loaded.\n  * @property {string[]} [allowedOrigins=[]] Used by `ext-xdomain-messaging.js` to indicate which origins are permitted for cross-domain messaging (e.g., between the embedded editor and main editor code). Besides explicit domains, one might add '*' to allow all domains (not recommended for privacy/data integrity of your user's content!), `window.location.origin` for allowing the same origin (should be safe if you trust all apps on your domain), 'null' to allow `file:///` URL usage\n  * @property {null|PlainObject} [colorPickerCSS=null] Object of CSS properties mapped to values (for jQuery) to apply to the color picker. See {@link http://api.jquery.com/css/#css-properties}. A `null` value (the default) will cause the CSS to default to `left` with a position equal to that of the `fill_color` or `stroke_color` element minus 140, and a `bottom` equal to 40\n  * @property {string} [paramurl] This was available via URL only. Allowed an un-encoded URL within the query string (use \"url\" or \"source\" with a data: URI instead)\n  * @property {Float} [canvas_expansion=3] The minimum area visible outside the canvas, as a multiple of the image dimensions. The larger the number, the more one can scroll outside the canvas.\n  * @property {PlainObject} [initFill] Init fill properties\n  * @property {string} [initFill.color=\"FF0000\"] The initial fill color. Must be a hex code string. Defaults to solid red.\n  * @property {Float} [initFill.opacity=1] The initial fill opacity. Must be a number between 0 and 1\n  * @property {PlainObject} [initStroke] Init stroke properties\n  * @property {Float} [initStroke.width=5] The initial stroke width. Must be a positive number.\n  * @property {string} [initStroke.color=\"000000\"] The initial stroke color. Must be a hex code. Defaults to solid black.\n  * @property {Float} [initStroke.opacity=1] The initial stroke opacity. Must be a number between 0 and 1.\n  * @property {PlainObject} text Text style properties\n  * @property {Float} [text.stroke_width=0] Text stroke width\n  * @property {Float} [text.font_size=24] Text font size\n  * @property {string} [text.font_family=\"serif\"] Text font family\n  * @property {Float} [initOpacity=1] Initial opacity (multiplied by 100)\n  * @property {module:SVGEditor.XYDimensions} [dimensions=[640, 480]] The default width/height of a new document. Use an array in `setConfig` (e.g., `[800, 600]`) and comma separated numbers in the URL.\n  * @property {boolean} [gridSnapping=false] Enable snap to grid by default. Set in Editor Options.\n  * @property {string} [gridColor=\"#000\"] Accepts hex, e.g., '#000'. Set in Editor Options. Defaults to black.\n  * @property {string} [baseUnit=\"px\"] Set in Editor Options.\n  * @property {Float} [snappingStep=10] Set the default grid snapping value. Set in Editor Options.\n  * @property {boolean} [showRulers=true] Initial state of ruler display (v2.6). Set in Editor Options.\n  * @property {string} [initTool=\"select\"] The initially selected tool. Must be either the ID of the button for the tool, or the ID without `tool_` prefix (e.g., \"select\").\n  * @property {boolean} [wireframe=false] Start in wireframe mode\n  * @property {boolean} [showlayers=false] Open the layers side-panel by default.\n  * @property {\"new\"|\"same\"} [exportWindowType=\"new\"] Can be \"new\" or \"same\" to indicate whether new windows will be generated for each export; the `window.name` of the export window is namespaced based on the `canvasName` (and incremented if \"new\" is selected as the type). Introduced 2.8.\n  * @property {boolean} [showGrid=false] Set by `ext-grid.js`; determines whether or not to show the grid by default\n  * @property {boolean} [show_outside_canvas=true] Defines whether or not elements outside the canvas should be visible. Set and used in `svgcanvas.js`.\n  * @property {boolean} [selectNew=true] If true, will replace the selection with the current element and automatically select element objects (when not in \"path\" mode) after they are created, showing their grips (v2.6). Set and used in `svgcanvas.js` (`mouseUp`).\n  * @todo Some others could be preferences as well (e.g., preventing URL changing of extensions, defaultExtensions, stylesheets, colorPickerCSS); Change the following to preferences and add pref controls where missing to the UI (e.g., `canvas_expansion`, `initFill`, `initStroke`, `text`, `initOpacity`, `dimensions`, `initTool`, `wireframe`, `showlayers`, `gridSnapping`, `gridColor`, `baseUnit`, `snappingStep`, `showRulers`, `exportWindowType`, `showGrid`, `show_outside_canvas`, `selectNew`)?\n  */\n  /**\n  * @namespace {module:SVGEditor.Config} defaultConfig\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Config}\n  */\n  defaultConfig = {\n    canvasName: 'default',\n    canvas_expansion: 3,\n    initFill: {\n      color: 'FF0000', // solid red\n      opacity: 1\n    },\n    initStroke: {\n      width: 5,\n      color: '000000', // solid black\n      opacity: 1\n    },\n    text: {\n      stroke_width: 0,\n      font_size: 24,\n      font_family: 'serif'\n    },\n    initOpacity: 1,\n    colorPickerCSS: null, // Defaults to 'left' with a position equal to that of the fill_color or stroke_color element minus 140, and a 'bottom' equal to 40\n    initTool: 'select',\n    exportWindowType: 'new', // 'same' (todo: also support 'download')\n    wireframe: false,\n    showlayers: false,\n    no_save_warning: false,\n    // PATH CONFIGURATION\n    // The following path configuration items are disallowed in the URL (as should any future path configurations)\n    langPath: 'locale/', // Default will be changed if this is a non-modular load\n    extPath: 'extensions/', // Default will be changed if this is a non-modular load\n    canvgPath: 'canvg/', // Default will be changed if this is a non-modular load\n    jspdfPath: 'jspdf/', // Default will be changed if this is a non-modular load\n    imgPath: 'images/',\n    jGraduatePath: 'jgraduate/images/',\n    extIconsPath: 'extensions/',\n    // DOCUMENT PROPERTIES\n    // Change the following to a preference (already in the Document Properties dialog)?\n    dimensions: [640, 480],\n    // EDITOR OPTIONS\n    // Change the following to preferences (already in the Editor Options dialog)?\n    gridSnapping: false,\n    gridColor: '#000',\n    baseUnit: 'px',\n    snappingStep: 10,\n    showRulers: true,\n    // URL BEHAVIOR CONFIGURATION\n    preventAllURLConfig: false,\n    preventURLContentLoading: false,\n    // EXTENSION CONFIGURATION (see also preventAllURLConfig)\n    lockExtensions: false, // Disallowed in URL setting\n    noDefaultExtensions: false, // noDefaultExtensions can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n    // EXTENSION-RELATED (GRID)\n    showGrid: false, // Set by ext-grid.js\n    // EXTENSION-RELATED (STORAGE)\n    noStorageOnLoad: false, // Some interaction with ext-storage.js; prevent even the loading of previously saved local storage\n    forceStorage: false, // Some interaction with ext-storage.js; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not\n    emptyStorageOnDecline: false // Used by ext-storage.js; empty any prior storage if the user declines to store\n  },\n  /**\n  * LOCALE\n  * @name module:SVGEditor.uiStrings\n  * @type {PlainObject}\n  */\n  uiStrings = editor.uiStrings = {};\n\nlet svgCanvas, urldata,\n  isReady = false,\n  customExportImage = false,\n  customExportPDF = false,\n  curPrefs = {},\n  // Note: The difference between Prefs and Config is that Prefs\n  //   can be changed in the UI and are stored in the browser,\n  //   while config cannot\n  curConfig = {\n    // We do not put on defaultConfig to simplify object copying\n    //   procedures (we obtain instead from defaultExtensions)\n    extensions: [],\n    stylesheets: [],\n    /**\n    * Can use `location.origin` to indicate the current\n    * origin. Can contain a '*' to allow all domains or 'null' (as\n    * a string) to support all `file:///` URLs. Cannot be set by\n    * URL for security reasons (not safe, at least for\n    * privacy or data integrity of SVG content).\n    * Might have been fairly safe to allow\n    *   `new URL(location.href).origin` by default but\n    *   avoiding it ensures some more security that even third\n    *   party apps on the same domain also cannot communicate\n    *   with this app by default.\n    * For use with `ext-xdomain-messaging.js`\n    * @todo We might instead make as a user-facing preference.\n    */\n    allowedOrigins: []\n  };\n\nfunction loadSvgString (str, callback) {\n  const success = svgCanvas.setSvgString(str) !== false;\n  callback = callback || $.noop;\n  if (success) {\n    callback(true); // eslint-disable-line standard/no-callback-literal\n  } else {\n    $.alert(uiStrings.notification.errorLoadingSVG, function () {\n      callback(false); // eslint-disable-line standard/no-callback-literal\n    });\n  }\n}\n\n/**\n * @function module:SVGEditor~getImportLocale\n * @param {string} defaultLang\n * @param {string} defaultName\n * @returns {module:SVGEditor~ImportLocale}\n */\nfunction getImportLocale ({defaultLang, defaultName}) {\n  /**\n   * @function module:SVGEditor~ImportLocale\n   * @param {string} [name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}\n   * @param {string} [lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}\n   * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}\n   */\n  return async function importLocale ({name = defaultName, lang = defaultLang} = {}) {\n    async function importLocale (lang) {\n      const url = `${curConfig.extPath}ext-locale/${name}/${lang}.js`;\n      return importSetGlobalDefault(url, {\n        global: `svgEditorExtensionLocale_${name}_${lang}`\n      });\n    }\n    try {\n      return await importLocale(lang);\n    } catch (err) {\n      return importLocale('en');\n    }\n  };\n}\n\n/**\n* EXPORTS\n*/\n\n/**\n* Store and retrieve preferences.\n* @param {string} key The preference name to be retrieved or set\n* @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.\n* @returns {string} If val is missing or falsey, the value of the previously stored preference will be returned.\n* @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?\n* @todo Review whether any remaining existing direct references to\n*  getting `curPrefs` can be changed to use `$.pref()` getting to ensure\n*  `defaultPrefs` fallback (also for sake of `allowInitialUserOverride`); specifically, `bkgd_color` could be changed so that\n*  the pref dialog has a button to auto-calculate background, but otherwise uses `$.pref()` to be able to get default prefs\n*  or overridable settings\n*/\n$.pref = function (key, val) {\n  if (val) {\n    curPrefs[key] = val;\n    /**\n    * @name curPrefs\n    * @memberof module:SVGEditor\n    * @implements {module:SVGEditor.Prefs}\n    */\n    editor.curPrefs = curPrefs; // Update exported value\n    return;\n  }\n  return (key in curPrefs) ? curPrefs[key] : defaultPrefs[key];\n};\n\n/*\n* EDITOR PUBLIC METHODS\n// Todo: Sort these methods per invocation order, ideally with init at the end\n// Todo: Prevent execution until init executes if dependent on it?\n*/\neditor.putLocale = putLocale;\neditor.readLang = readLang;\neditor.setStrings = setStrings;\n\n/**\n* Where permitted, sets canvas and/or `defaultPrefs` based on previous\n*  storage. This will override URL settings (for security reasons) but\n*  not `svgedit-config-iife.js` configuration (unless initial user\n*  overriding is explicitly permitted there via `allowInitialUserOverride`).\n* @todo Split `allowInitialUserOverride` into `allowOverrideByURL` and\n*  `allowOverrideByUserStorage` so `svgedit-config-iife.js` can disallow some\n*  individual items for URL setting but allow for user storage AND/OR\n*  change URL setting so that it always uses a different namespace,\n*  so it won't affect pre-existing user storage (but then if users saves\n*  that, it will then be subject to tampering\n* @returns {undefined}\n*/\neditor.loadContentAndPrefs = function () {\n  if (!curConfig.forceStorage &&\n    (curConfig.noStorageOnLoad ||\n        !document.cookie.match(/(?:^|;\\s*)store=(?:prefsAndContent|prefsOnly)/)\n    )\n  ) {\n    return;\n  }\n\n  // LOAD CONTENT\n  if (editor.storage && // Cookies do not have enough available memory to hold large documents\n    (curConfig.forceStorage ||\n      (!curConfig.noStorageOnLoad &&\n        document.cookie.match(/(?:^|;\\s*)store=prefsAndContent/))\n    )\n  ) {\n    const name = 'svgedit-' + curConfig.canvasName;\n    const cached = editor.storage.getItem(name);\n    if (cached) {\n      editor.loadFromString(cached);\n    }\n  }\n\n  // LOAD PREFS\n  for (const key in defaultPrefs) {\n    if (defaultPrefs.hasOwnProperty(key)) { // It's our own config, so we don't need to iterate up the prototype chain\n      const storeKey = 'svg-edit-' + key;\n      if (editor.storage) {\n        const val = editor.storage.getItem(storeKey);\n        if (val) {\n          defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)\n        }\n      } else if (window.widget) {\n        defaultPrefs[key] = window.widget.preferenceForKey(storeKey);\n      } else {\n        const result = document.cookie.match(new RegExp('(?:^|;\\\\s*)' + Utils.regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));\n        defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';\n      }\n    }\n  }\n};\n\n/**\n* Allows setting of preferences or configuration (including extensions).\n* @param {module:SVGEditor.Config|module:SVGEditor.Prefs} opts The preferences or configuration (including extensions). See the tutorial on {@tutorial ConfigOptions} for info on config and preferences.\n* @param {PlainObject} [cfgCfg] Describes configuration which applies to the\n*    particular batch of supplied options\n* @param {boolean} [cfgCfg.allowInitialUserOverride=false] Set to true if you wish\n*  to allow initial overriding of settings by the user via the URL\n*  (if permitted) or previously stored preferences (if permitted);\n*  note that it will be too late if you make such calls in extension\n*  code because the URL or preference storage settings will\n*   have already taken place.\n* @param {boolean} [cfgCfg.overwrite=true] Set to false if you wish to\n*  prevent the overwriting of prior-set preferences or configuration\n*  (URL settings will always follow this requirement for security\n*  reasons, so `svgedit-config-iife.js` settings cannot be overridden unless it\n*  explicitly permits via `allowInitialUserOverride` but extension config\n*  can be overridden as they will run after URL settings). Should\n*   not be needed in `svgedit-config-iife.js`.\n* @returns {undefined}\n*/\neditor.setConfig = function (opts, cfgCfg) {\n  cfgCfg = cfgCfg || {};\n  function extendOrAdd (cfgObj, key, val) {\n    if (cfgObj[key] && typeof cfgObj[key] === 'object') {\n      $.extend(true, cfgObj[key], val);\n    } else {\n      cfgObj[key] = val;\n    }\n  }\n  $.each(opts, function (key, val) {\n    if (opts.hasOwnProperty(key)) {\n      // Only allow prefs defined in defaultPrefs\n      if (defaultPrefs.hasOwnProperty(key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          curPrefs.hasOwnProperty(key)\n        )) {\n          return;\n        }\n        if (cfgCfg.allowInitialUserOverride === true) {\n          defaultPrefs[key] = val;\n        } else {\n          $.pref(key, val);\n        }\n      } else if (['extensions', 'stylesheets', 'allowedOrigins'].includes(key)) {\n        if (cfgCfg.overwrite === false &&\n          (\n            curConfig.preventAllURLConfig ||\n            ['allowedOrigins', 'stylesheets'].includes(key) ||\n            (key === 'extensions' && curConfig.lockExtensions)\n          )\n        ) {\n          return;\n        }\n        curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later\n      // Only allow other curConfig if defined in defaultConfig\n      } else if (defaultConfig.hasOwnProperty(key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          curConfig.hasOwnProperty(key)\n        )) {\n          return;\n        }\n        // Potentially overwriting of previously set config\n        if (curConfig.hasOwnProperty(key)) {\n          if (cfgCfg.overwrite === false) {\n            return;\n          }\n          extendOrAdd(curConfig, key, val);\n        } else {\n          if (cfgCfg.allowInitialUserOverride === true) {\n            extendOrAdd(defaultConfig, key, val);\n          } else {\n            if (defaultConfig[key] && typeof defaultConfig[key] === 'object') {\n              curConfig[key] = {};\n              $.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects\n            } else {\n              curConfig[key] = val;\n            }\n          }\n        }\n      }\n    }\n  });\n  /**\n  * @name curConfig\n  * @memberof module:SVGEditor\n  * @implements {module:SVGEditor.Config}\n  */\n  editor.curConfig = curConfig; // Update exported value\n};\n\n/**\n* All methods are optional\n* @interface module:SVGEditor.CustomHandler\n* @type {PlainObject}\n*/\n/**\n* Its responsibilities are:\n*  - invoke a file chooser dialog in 'open' mode\n*  - let user pick a SVG file\n*  - calls [svgCanvas.setSvgString()]{@link module:svgcanvas.SvgCanvas#setSvgString} with the string contents of that file.\n* Not passed any parameters.\n* @function module:SVGEditor.CustomHandler#open\n* @returns {undefined}\n*/\n/**\n* Its responsibilities are:\n*  - accept the string contents of the current document\n*  - invoke a file chooser dialog in 'save' mode\n*  - save the file to location chosen by the user\n* @function module:SVGEditor.CustomHandler#save\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:saved} svgStr A string of the SVG\n* @listens module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\n/**\n* Its responsibilities (with regard to the object it is supplied in its 2nd argument) are:\n*  - inform user of any issues supplied via the \"issues\" property\n*  - convert the \"svg\" property SVG string into an image for export;\n*    utilize the properties \"type\" (currently 'PNG', 'JPEG', 'BMP',\n*    'WEBP', 'PDF'), \"mimeType\", and \"quality\" (for 'JPEG' and 'WEBP'\n*    types) to determine the proper output.\n* @function module:SVGEditor.CustomHandler#exportImage\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exported} data\n* @listens module:svgcanvas.SvgCanvas#event:exported\n* @returns {undefined}\n*/\n/**\n* @function module:SVGEditor.CustomHandler#exportPDF\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exportedPDF} data\n* @listens module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {undefined}\n*/\n\n/**\n* Allows one to override default SVGEdit `open`, `save`, and\n* `export` editor behaviors.\n* @param {module:SVGEditor.CustomHandler} opts Extension mechanisms may call `setCustomHandlers` with three functions: `opts.open`, `opts.save`, and `opts.exportImage`\n* @returns {undefined}\n*/\neditor.setCustomHandlers = function (opts) {\n  editor.ready(function () {\n    if (opts.open) {\n      $('#tool_open > input[type=\"file\"]').remove();\n      $('#tool_open').show();\n      svgCanvas.open = opts.open;\n    }\n    if (opts.save) {\n      editor.showSaveWarning = false;\n      svgCanvas.bind('saved', opts.save);\n    }\n    if (opts.exportImage) {\n      customExportImage = opts.exportImage;\n      svgCanvas.bind('exported', customExportImage); // canvg and our RGBColor will be available to the method\n    }\n    if (opts.exportPDF) {\n      customExportPDF = opts.exportPDF;\n      svgCanvas.bind('exportedPDF', customExportPDF); // jsPDF and our RGBColor will be available to the method\n    }\n  });\n};\n\n/**\n* @param {boolean} arg\n* @returns {undefined}\n*/\neditor.randomizeIds = function (arg) {\n  return svgCanvas.randomizeIds(arg);\n};\n\n/**\n* Auto-run after a Promise microtask.\n* @returns {undefined}\n*/\neditor.init = function () {\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (!modularVersion) {\n    Object.assign(defaultConfig, {\n      langPath: '../dist/locale/',\n      extPath: '../dist/extensions/',\n      canvgPath: '../dist/',\n      jspdfPath: '../dist/'\n    });\n  }\n\n  // const host = location.hostname,\n  //  onWeb = host && host.includes('.');\n  // Some FF versions throw security errors here when directly accessing\n  try {\n    if ('localStorage' in window) { // && onWeb removed so Webkit works locally\n      /**\n      * The built-in interface implemented by `localStorage`\n      * @external Storage\n      */\n      /**\n      * @name storage\n      * @memberof module:SVGEditor\n      * @type {external:Storage}\n      */\n      editor.storage = localStorage;\n    }\n  } catch (err) {}\n\n  // Todo: Avoid const-defined functions and group functions together, etc. where possible\n  const goodLangs = [];\n  $('#lang_select option').each(function () {\n    goodLangs.push(this.value);\n  });\n\n  function setupCurPrefs () {\n    curPrefs = $.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set\n    // Export updated prefs\n    editor.curPrefs = curPrefs;\n  }\n  function setupCurConfig () {\n    curConfig = $.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set\n\n    // Now deal with extensions and other array config\n    if (!curConfig.noDefaultExtensions) {\n      curConfig.extensions = curConfig.extensions.concat(defaultExtensions);\n    }\n    // ...and remove any dupes\n    ['extensions', 'stylesheets', 'allowedOrigins'].forEach(function (cfg) {\n      curConfig[cfg] = $.grep(curConfig[cfg], function (n, i) { // Supposedly faster than filter per http://amandeep1986.blogspot.hk/2015/02/jquery-grep-vs-js-filter.html\n        return i === curConfig[cfg].indexOf(n);\n      });\n    });\n    // Export updated config\n    editor.curConfig = curConfig;\n  }\n  (() => {\n    // Load config/data from URL if given\n    let src, qstr;\n    urldata = $.deparam.querystring(true);\n    if (!$.isEmptyObject(urldata)) {\n      if (urldata.dimensions) {\n        urldata.dimensions = urldata.dimensions.split(',');\n      }\n\n      if (urldata.bkgd_color) {\n        urldata.bkgd_color = '#' + urldata.bkgd_color;\n      }\n\n      if (urldata.extensions) {\n        // For security reasons, disallow cross-domain or cross-folder extensions via URL\n        urldata.extensions = urldata.extensions.match(/[:/\\\\]/) ? '' : urldata.extensions.split(',');\n      }\n\n      // Disallowing extension paths via URL for\n      // security reasons, even for same-domain\n      // ones given potential to interact in undesirable\n      // ways with other script resources\n      [\n        'langPath', 'extPath', 'canvgPath', 'jspdfPath',\n        'imgPath', 'jGraduatePath', 'extIconsPath'\n      ].forEach(function (pathConfig) {\n        if (urldata[pathConfig]) {\n          delete urldata[pathConfig];\n        }\n      });\n\n      editor.setConfig(urldata, {overwrite: false}); // Note: source and url (as with storagePrompt later) are not set on config but are used below\n\n      setupCurConfig();\n\n      if (!curConfig.preventURLContentLoading) {\n        src = urldata.source;\n        qstr = $.param.querystring();\n        if (!src) { // urldata.source may have been null if it ended with '='\n          if (qstr.includes('source=data:')) {\n            src = qstr.match(/source=(data:[^&]*)/)[1];\n          }\n        }\n        if (src) {\n          if (src.startsWith('data:')) {\n            editor.loadFromDataURI(src);\n          } else {\n            editor.loadFromString(src);\n          }\n          return;\n        }\n        if (urldata.url) {\n          editor.loadFromURL(urldata.url);\n          return;\n        }\n      }\n      if (!urldata.noStorageOnLoad || curConfig.forceStorage) {\n        editor.loadContentAndPrefs();\n      }\n    } else {\n      setupCurConfig();\n      editor.loadContentAndPrefs();\n    }\n    setupCurPrefs();\n  })();\n\n  /**\n  * Called internally.\n  * @param {string|Element|external:jQuery} elem\n  * @param {string|external:jQuery} iconId\n  * @param {Float} forcedSize Not in use\n  * @returns {undefined}\n  */\n  const setIcon = editor.setIcon = function (elem, iconId, forcedSize) {\n    const icon = (typeof iconId === 'string') ? $.getSvgIcon(iconId, true) : iconId.clone();\n    if (!icon) {\n      console.log('NOTE: Icon image missing: ' + iconId);\n      return;\n    }\n    $(elem).empty().append(icon);\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n   * @fires module:svgcanvas.SvgCanvas#event:extensions_added\n   * @returns {Promise} Resolves to result of {@link module:locale.readLang}\n   */\n  const extAndLocaleFunc = async function () {\n    // const lang = ('lang' in curPrefs) ? curPrefs.lang : null;\n    const {langParam, langData} = await editor.putLocale(null, goodLangs, curConfig);\n    await setLang(langParam, langData);\n\n    try {\n      await Promise.all(\n        curConfig.extensions.map(async (extname) => {\n          const extName = extname.match(/^ext-(.+)\\.js/);\n          if (!extName) { // Ensure URL cannot specify some other unintended file in the extPath\n            return;\n          }\n          const url = curConfig.extPath + extname;\n          // Todo: Replace this with `return import(url);` when\n          //   `import()` widely supported\n          /**\n           * @tutorial ExtensionDocs\n           * @typedef {PlainObject} module:SVGEditor.ExtensionObject\n           * @property {string} [name] Name of the extension. Used internally; no need for i18n. Defaults to extension name without beginning \"ext-\" or ending \".js\".\n           * @property {module:svgcanvas.ExtensionInitCallback} [init]\n           */\n          try {\n            /**\n             * @type {module:SVGEditor.ExtensionObject}\n             */\n            const imported = await importSetGlobalDefault(url, {\n              global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')\n            });\n            const {name = extName[1], init} = imported;\n            const importLocale = getImportLocale({defaultLang: langParam, defaultName: name});\n            return editor.addExtension(name, (init && init.bind(editor)), importLocale);\n          } catch (err) {\n            console.log(err);\n            console.error('Extension failed to load: ' + extname + '; ' + err);\n          }\n        })\n      );\n      svgCanvas.bind('extensions_added',\n        /**\n        * @param {external:Window} win\n        * @param {module:svgcanvas.SvgCanvas#event:extensions_added} data\n        * @listens module:svgcanvas.SvgCanvas#event:extensions_added\n        * @returns {undefined}\n        */\n        (win, data) => {\n          extensionsAdded = true;\n          Actions.setAll();\n\n          $('.flyout_arrow_horiz:empty').each(function () {\n            $(this).append($.getSvgIcon('arrow_right', true).width(5).height(5));\n          });\n\n          if (editor.storagePromptState === 'ignore') {\n            updateCanvas(true);\n          }\n\n          messageQueue.forEach(\n            /**\n             * @param {module:svgcanvas.SvgCanvas#event:message} messageObj\n             * @fires module:svgcanvas.SvgCanvas#event:message\n             * @returns {undefined}\n             */\n            (messageObj) => {\n              svgCanvas.call('message', messageObj);\n            }\n          );\n        }\n      );\n      svgCanvas.call('extensions_added');\n    } catch (err) {\n      console.log(err);\n    }\n  };\n\n  const stateObj = {tool_scale: editor.tool_scale};\n\n  const setFlyoutPositions = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      const {left, top} = shower.offset();\n      const w = shower.outerWidth();\n      $(this).css({left: (left + w) * editor.tool_scale, top});\n    });\n  };\n\n  const uaPrefix = (function () {\n    const regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;\n    const someScript = document.getElementsByTagName('script')[0];\n    for (const prop in someScript.style) {\n      if (regex.test(prop)) {\n        // test is faster than match, so it's better to perform\n        // that on the lot and match only when necessary\n        return prop.match(regex)[0];\n      }\n    }\n    // Nothing found so far?\n    if ('WebkitOpacity' in someScript.style) { return 'Webkit'; }\n    if ('KhtmlOpacity' in someScript.style) { return 'Khtml'; }\n\n    return '';\n  }());\n\n  const scaleElements = function (elems, scale) {\n    // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused\n    const sides = ['top', 'left', 'bottom', 'right'];\n\n    elems.each(function () {\n      // Handled in CSS\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const el = $(this);\n      const w = el.outerWidth() * (scale - 1);\n      const h = el.outerHeight() * (scale - 1);\n      // const margins = {}; // Currently unused\n\n      for (let i = 0; i < 4; i++) {\n        const s = sides[i];\n        let cur = el.data('orig_margin-' + s);\n        if (cur == null) {\n          cur = parseInt(el.css('margin-' + s), 10);\n          // Cache the original margin\n          el.data('orig_margin-' + s, cur);\n        }\n        let val = cur * scale;\n        if (s === 'right') {\n          val += w;\n        } else if (s === 'bottom') {\n          val += h;\n        }\n\n        el.css('margin-' + s, val);\n        // el.css('outline', '1px solid red');\n      }\n    });\n  };\n\n  /**\n  * Called internally.\n  * @param {module:SVGEditor.IconSize} size\n  * @returns {undefined}\n  */\n  const setIconSize = editor.setIconSize = function (size) {\n    // const elems = $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open');\n    const selToscale = '#tools_top .toolset, #editor_panel > *, #history_panel > *,' +\n  '        #main_button, #tools_left > *, #path_node_panel > *, #multiselected_panel > *,' +\n  '        #g_panel > *, #tool_font_size > *, .tools_flyout';\n\n    const elems = $(selToscale);\n\n    let scale = 1;\n    if (typeof size === 'number') {\n      scale = size;\n    } else {\n      const iconSizes = {s: 0.75, m: 1, l: 1.25, xl: 1.5};\n      scale = iconSizes[size];\n    }\n\n    stateObj.tool_scale = editor.tool_scale = scale;\n\n    setFlyoutPositions();\n    // $('.tools_flyout').each(function () {\n    //   const pos = $(this).position();\n    //   console.log($(this), pos.left+(34 * scale));\n    //   $(this).css({left: pos.left+(34 * scale), top: pos.top+(77 * scale)});\n    //   console.log('l', $(this).css('left'));\n    // });\n    //\n    // const scale = .75;\n\n    const hiddenPs = elems.parents(':hidden');\n    hiddenPs.css('visibility', 'hidden').show();\n    scaleElements(elems, scale);\n    hiddenPs.css('visibility', 'visible').hide();\n    // return;\n\n    $.pref('iconsize', size);\n    $('#iconsize').val(size);\n\n    // Change icon size\n    // $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open')\n    // .find('> svg, > img').each(function () {\n    //   this.setAttribute('width',size_num);\n    //   this.setAttribute('height',size_num);\n    // });\n    //\n    // $.resizeSvgIcons({\n    //   '.flyout_arrow_horiz > svg, .flyout_arrow_horiz > img': size_num / 5,\n    //   '#logo > svg, #logo > img': size_num * 1.3,\n    //   '#tools_bottom .icon_label > *': (size_num === 16 ? 18 : size_num * .75)\n    // });\n    // if (size != 's') {\n    //   $.resizeSvgIcons({'#layerbuttons svg, #layerbuttons img': size_num * .6});\n    // }\n\n    // Note that all rules will be prefixed with '#svg_editor' when parsed\n    const cssResizeRules = {\n      // '.tool_button,\\\n      // .push_button,\\\n      // .tool_button_current,\\\n      // .push_button_pressed,\\\n      // .disabled,\\\n      // .icon_label,\\\n      // .tools_flyout .tool_button': {\n      //   width: {s: '16px', l: '32px', xl: '48px'},\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   padding: {s: '1px', l: '2px', xl: '3px'}\n      // },\n      // '.tool_sep': {\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   margin: {s: '2px 2px', l: '2px 5px', xl: '2px 8px'}\n      // },\n      // '#main_icon': {\n      //   width: {s: '31px', l: '53px', xl: '75px'},\n      //   height: {s: '22px', l: '42px', xl: '64px'}\n      // },\n      '#tools_top': {\n        left: 50 + $('#main_button').width(),\n        height: 72\n      },\n      '#tools_left': {\n        width: 31,\n        top: 74\n      },\n      'div#workarea': {\n        left: 38,\n        top: 74\n      }\n      // '#tools_bottom': {\n      //   left: {s: '27px', l: '46px', xl: '65px'},\n      //   height: {s: '58px', l: '98px', xl: '145px'}\n      // },\n      // '#color_tools': {\n      //   'border-spacing': {s: '0 1px'},\n      //   'margin-top': {s: '-1px'}\n      // },\n      // '#color_tools .icon_label': {\n      //   width: {l:'43px', xl: '60px'}\n      // },\n      // '.color_tool': {\n      //   height: {s: '20px'}\n      // },\n      // '#tool_opacity': {\n      //   top: {s: '1px'},\n      //   height: {s: 'auto', l:'auto', xl:'auto'}\n      // },\n      // '#tools_top input, #tools_bottom input': {\n      //   'margin-top': {s: '2px', l: '4px', xl: '5px'},\n      //   height: {s: 'auto', l: 'auto', xl: 'auto'},\n      //   border: {s: '1px solid #555', l: 'auto', xl: 'auto'},\n      //   'font-size': {s: '.9em', l: '1.2em', xl: '1.4em'}\n      // },\n      // '#zoom_panel': {\n      //   'margin-top': {s: '3px', l: '4px', xl: '5px'}\n      // },\n      // '#copyright, #tools_bottom .label': {\n      //   'font-size': {l: '1.5em', xl: '2em'},\n      //   'line-height': {s: '15px'}\n      // },\n      // '#tools_bottom_2': {\n      //   width: {l: '295px', xl: '355px'},\n      //   top: {s: '4px'}\n      // },\n      // '#tools_top > div, #tools_top': {\n      //   'line-height': {s: '17px', l: '34px', xl: '50px'}\n      // },\n      // '.dropdown button': {\n      //   height: {s: '18px', l: '34px', xl: '40px'},\n      //   'line-height': {s: '18px', l: '34px', xl: '40px'},\n      //   'margin-top': {s: '3px'}\n      // },\n      // '#tools_top label, #tools_bottom label': {\n      //   'font-size': {s: '1em', l: '1.5em', xl: '2em'},\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // 'div.toolset': {\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // '#tool_bold, #tool_italic': {\n      //   'font-size': {s: '1.5em', l: '3em', xl: '4.5em'}\n      // },\n      // '#sidepanels': {\n      //   top: {s: '50px', l: '88px', xl: '125px'},\n      //   bottom: {s: '51px', l: '68px', xl: '65px'}\n      // },\n      // '#layerbuttons': {\n      //   width: {l: '130px', xl: '175px'},\n      //   height: {l: '24px', xl: '30px'}\n      // },\n      // '#layerlist': {\n      //   width: {l: '128px', xl: '150px'}\n      // },\n      // '.layer_button': {\n      //   width: {l: '19px', xl: '28px'},\n      //   height: {l: '19px', xl: '28px'}\n      // },\n      // 'input.spin-button': {\n      //   'background-image': {l: 'url('images/spinbtn_updn_big.png')', xl: 'url('images/spinbtn_updn_big.png')'},\n      //   'background-position': {l: '100% -5px', xl: '100% -2px'},\n      //   'padding-right': {l: '24px', xl: '24px' }\n      // },\n      // 'input.spin-button.up': {\n      //   'background-position': {l: '100% -45px', xl: '100% -42px'}\n      // },\n      // 'input.spin-button.down': {\n      //   'background-position': {l: '100% -85px', xl: '100% -82px'}\n      // },\n      // '#position_opts': {\n      //   width: {all: (size_num*4) +'px'}\n      // }\n    };\n\n    let ruleElem = $('#tool_size_rules');\n    if (!ruleElem.length) {\n      ruleElem = $('<style id=\"tool_size_rules\"></style>').appendTo('head');\n    } else {\n      ruleElem.empty();\n    }\n\n    if (size !== 'm') {\n      let styleStr = '';\n      $.each(cssResizeRules, function (selector, rules) {\n        selector = '#svg_editor ' + selector.replace(/,/g, ', #svg_editor');\n        styleStr += selector + '{';\n        $.each(rules, function (prop, values) {\n          let val;\n          if (typeof values === 'number') {\n            val = (values * scale) + 'px';\n          } else if (values[size] || values.all) {\n            val = (values[size] || values.all);\n          }\n          styleStr += (prop + ':' + val + ';');\n        });\n        styleStr += '}';\n      });\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const prefix = '-' + uaPrefix.toLowerCase() + '-';\n      styleStr += (selToscale + '{' + prefix + 'transform: scale(' + scale + ');}' +\n        ' #svg_editor div.toolset .toolset {' + prefix + 'transform: scale(1); margin: 1px !important;}' + // Hack for markers\n        ' #svg_editor .ui-slider {' + prefix + 'transform: scale(' + (1 / scale) + ');}' // Hack for sliders\n      );\n      ruleElem.text(styleStr);\n    }\n\n    setFlyoutPositions();\n  };\n  $.svgIcons(curConfig.imgPath + 'svg_edit_icons.svg', {\n    w: 24, h: 24,\n    id_match: false,\n    no_img: !isWebkit(), // Opera & Firefox 4 gives odd behavior w/images\n    fallback_path: curConfig.imgPath,\n    fallback: {\n      logo: 'logo.png',\n\n      select: 'select.png',\n      select_node: 'select_node.png',\n\n      square: 'square.png',\n      rect: 'rect.png',\n      fh_rect: 'freehand-square.png',\n      circle: 'circle.png',\n      ellipse: 'ellipse.png',\n      fh_ellipse: 'freehand-circle.png',\n      pencil: 'fhpath.png',\n      pen: 'line.png',\n      text: 'text.png',\n      path: 'path.png',\n      add_subpath: 'add_subpath.png',\n      close_path: 'closepath.png',\n      open_path: 'openpath.png',\n\n      image: 'image.png',\n      zoom: 'zoom.png',\n\n      arrow_right: 'flyouth.png',\n      arrow_right_big: 'arrow_right_big.png',\n      arrow_down: 'dropdown.gif',\n      fill: 'fill.png',\n      stroke: 'stroke.png',\n      opacity: 'opacity.png',\n\n      new_image: 'clear.png',\n      save: 'save.png',\n      export: 'export.png',\n      open: 'open.png',\n      import: 'import.png',\n      docprops: 'document-properties.png',\n      source: 'source.png',\n      wireframe: 'wireframe.png',\n\n      undo: 'undo.png',\n      redo: 'redo.png',\n\n      clone: 'clone.png',\n      delete: 'delete.png',\n      go_up: 'go-up.png',\n      go_down: 'go-down.png',\n      context_menu: 'context_menu.png',\n      move_bottom: 'move_bottom.png',\n      move_top: 'move_top.png',\n      to_path: 'to_path.png',\n      link_controls: 'link_controls.png',\n      reorient: 'reorient.png',\n      group_elements: 'shape_group_elements.png',\n\n      ungroup: 'shape_ungroup.png',\n      unlink_use: 'unlink_use.png',\n      width: 'width.png',\n      height: 'height.png',\n      c_radius: 'c_radius.png',\n      angle: 'angle.png',\n      blur: 'blur.png',\n      fontsize: 'fontsize.png',\n      align: 'align.png',\n\n      align_left: 'align-left.png',\n      align_center: 'align-center.png',\n      align_right: 'align-right.png',\n      align_top: 'align-top.png',\n      align_middle: 'align-middle.png',\n      align_bottom: 'align-bottom.png',\n\n      linecap_butt: 'linecap_butt.png',\n      linecap_square: 'linecap_square.png',\n      linecap_round: 'linecap_round.png',\n      linejoin_miter: 'linejoin_miter.png',\n      linejoin_bevel: 'linejoin_bevel.png',\n      linejoin_round: 'linejoin_round.png',\n      eye: 'eye.png',\n      no_color: 'no_color.png',\n\n      ok: 'save.png',\n      cancel: 'cancel.png',\n      warning: 'warning.png',\n\n      node_delete: 'node_delete.png',\n      node_clone: 'node_clone.png',\n\n      globe_link: 'globe_link.png'\n    },\n    placement: {\n      '#logo': 'logo',\n\n      '#tool_clear div,#layer_new': 'new_image',\n      '#tool_save div': 'save',\n      '#tool_export div': 'export',\n      '#tool_open div div': 'open',\n      '#tool_import div div': 'import',\n      '#tool_source': 'source',\n      '#tool_docprops > div': 'docprops',\n      '#tool_wireframe': 'wireframe',\n\n      '#tool_undo': 'undo',\n      '#tool_redo': 'redo',\n\n      '#tool_select': 'select',\n      '#tool_fhpath': 'pencil',\n      '#tool_line': 'pen',\n      '#tool_rect,#tools_rect_show': 'rect',\n      '#tool_square': 'square',\n      '#tool_fhrect': 'fh_rect',\n      '#tool_ellipse,#tools_ellipse_show': 'ellipse',\n      '#tool_circle': 'circle',\n      '#tool_fhellipse': 'fh_ellipse',\n      '#tool_path': 'path',\n      '#tool_text,#layer_rename': 'text',\n      '#tool_image': 'image',\n      '#tool_zoom': 'zoom',\n\n      '#tool_clone,#tool_clone_multi': 'clone',\n      '#tool_node_clone': 'node_clone',\n      '#layer_delete,#tool_delete,#tool_delete_multi': 'delete',\n      '#tool_node_delete': 'node_delete',\n      '#tool_add_subpath': 'add_subpath',\n      '#tool_openclose_path': 'open_path',\n      '#tool_move_top': 'move_top',\n      '#tool_move_bottom': 'move_bottom',\n      '#tool_topath': 'to_path',\n      '#tool_node_link': 'link_controls',\n      '#tool_reorient': 'reorient',\n      '#tool_group_elements': 'group_elements',\n      '#tool_ungroup': 'ungroup',\n      '#tool_unlink_use': 'unlink_use',\n\n      '#tool_alignleft, #tool_posleft': 'align_left',\n      '#tool_aligncenter, #tool_poscenter': 'align_center',\n      '#tool_alignright, #tool_posright': 'align_right',\n      '#tool_aligntop, #tool_postop': 'align_top',\n      '#tool_alignmiddle, #tool_posmiddle': 'align_middle',\n      '#tool_alignbottom, #tool_posbottom': 'align_bottom',\n      '#cur_position': 'align',\n\n      '#linecap_butt,#cur_linecap': 'linecap_butt',\n      '#linecap_round': 'linecap_round',\n      '#linecap_square': 'linecap_square',\n\n      '#linejoin_miter,#cur_linejoin': 'linejoin_miter',\n      '#linejoin_round': 'linejoin_round',\n      '#linejoin_bevel': 'linejoin_bevel',\n\n      '#url_notice': 'warning',\n\n      '#layer_up': 'go_up',\n      '#layer_down': 'go_down',\n      '#layer_moreopts': 'context_menu',\n      '#layerlist td.layervis': 'eye',\n\n      '#tool_source_save,#tool_docprops_save,#tool_prefs_save': 'ok',\n      '#tool_source_cancel,#tool_docprops_cancel,#tool_prefs_cancel': 'cancel',\n\n      '#rwidthLabel, #iwidthLabel': 'width',\n      '#rheightLabel, #iheightLabel': 'height',\n      '#cornerRadiusLabel span': 'c_radius',\n      '#angleLabel': 'angle',\n      '#linkLabel,#tool_make_link,#tool_make_link_multi': 'globe_link',\n      '#zoomLabel': 'zoom',\n      '#tool_fill label': 'fill',\n      '#tool_stroke .icon_label': 'stroke',\n      '#group_opacityLabel': 'opacity',\n      '#blurLabel': 'blur',\n      '#font_sizeLabel': 'fontsize',\n\n      '.flyout_arrow_horiz': 'arrow_right',\n      '.dropdown button, #main_button .dropdown': 'arrow_down',\n      '#palette .palette_item:first, #fill_bg, #stroke_bg': 'no_color'\n    },\n    resize: {\n      '#logo .svg_icon': 28,\n      '.flyout_arrow_horiz .svg_icon': 5,\n      '.layer_button .svg_icon, #layerlist td.layervis .svg_icon': 14,\n      '.dropdown button .svg_icon': 7,\n      '#main_button .dropdown .svg_icon': 9,\n      '.palette_item:first .svg_icon': 15,\n      '#fill_bg .svg_icon, #stroke_bg .svg_icon': 16,\n      '.toolbar_button button .svg_icon': 16,\n      '.stroke_tool div div .svg_icon': 20,\n      '#tools_bottom label .svg_icon': 18\n    },\n    callback (icons) {\n      $('.toolbar_button button > svg, .toolbar_button button > img').each(function () {\n        $(this).parent().prepend(this);\n      });\n\n      const tleft = $('#tools_left');\n\n      let minHeight;\n      if (tleft.length) {\n        minHeight = tleft.offset().top + tleft.outerHeight();\n      }\n\n      const size = $.pref('iconsize');\n      editor.setIconSize(size || ($(window).height() < minHeight ? 's' : 'm'));\n\n      // Look for any missing flyout icons from plugins\n      $('.tools_flyout').each(function () {\n        const shower = $('#' + this.id + '_show');\n        const sel = shower.attr('data-curopt');\n        // Check if there's an icon here\n        if (!shower.children('svg, img').length) {\n          const clone = $(sel).children().clone();\n          if (clone.length) {\n            clone[0].removeAttribute('style'); // Needed for Opera\n            shower.append(clone);\n          }\n        }\n      });\n\n      function getStylesheetPriority (stylesheet) {\n        switch (stylesheet) {\n        case 'jgraduate/css/jPicker.css':\n          return 1;\n        case 'jgraduate/css/jGraduate.css':\n          return 2;\n        case 'svg-editor.css':\n          return 3;\n        case 'spinbtn/jQuery.SpinButton.css':\n          return 4;\n        default:\n          return Infinity;\n        }\n      }\n      let stylesheets = $.loadingStylesheets.sort((a, b) => {\n        const priorityA = getStylesheetPriority(a);\n        const priorityB = getStylesheetPriority(b);\n        if (priorityA === priorityB) {\n          return 0;\n        }\n        return priorityA > priorityB;\n      });\n      if (curConfig.stylesheets.length) {\n        // Ensure a copy with unique items\n        stylesheets = [...new Set(curConfig.stylesheets)];\n        const idx = stylesheets.indexOf('@default');\n        if (idx > -1) {\n          stylesheets.splice(idx, 1, ...$.loadingStylesheets);\n        }\n      }\n      loadStylesheets(stylesheets, {acceptErrors: ({stylesheetURL, reject, resolve}) => {\n        if ($.loadingStylesheets.includes(stylesheetURL)) {\n          reject(new Error(`Missing expected stylesheet: ${stylesheetURL}`));\n          return;\n        }\n        resolve();\n      }}).then(() => {\n        $('#svg_container')[0].style.visibility = 'visible';\n        editor.runCallbacks();\n      });\n    }\n  });\n\n  /**\n  * @name module:SVGEditor.canvas\n  * @type {module:svgcanvas.SvgCanvas}\n  */\n  editor.canvas = svgCanvas = new SvgCanvas(\n    document.getElementById('svgcanvas'),\n    curConfig\n  );\n  const palette = [ // Todo: Make into configuration item?\n      '#000000', '#3f3f3f', '#7f7f7f', '#bfbfbf', '#ffffff',\n      '#ff0000', '#ff7f00', '#ffff00', '#7fff00',\n      '#00ff00', '#00ff7f', '#00ffff', '#007fff',\n      '#0000ff', '#7f00ff', '#ff00ff', '#ff007f',\n      '#7f0000', '#7f3f00', '#7f7f00', '#3f7f00',\n      '#007f00', '#007f3f', '#007f7f', '#003f7f',\n      '#00007f', '#3f007f', '#7f007f', '#7f003f',\n      '#ffaaaa', '#ffd4aa', '#ffffaa', '#d4ffaa',\n      '#aaffaa', '#aaffd4', '#aaffff', '#aad4ff',\n      '#aaaaff', '#d4aaff', '#ffaaff', '#ffaad4'\n    ],\n    modKey = (isMac() ? 'meta+' : 'ctrl+'), // ⌘\n    path = svgCanvas.pathActions,\n    {undoMgr} = svgCanvas,\n    workarea = $('#workarea'),\n    canvMenu = $('#cmenu_canvas'),\n    // layerMenu = $('#cmenu_layers'), // Unused\n    paintBox = {fill: null, stroke: null};\n\n  let resizeTimer, curScrollPos;\n  let exportWindow = null,\n    defaultImageURL = curConfig.imgPath + 'logo.png',\n    zoomInIcon = 'crosshair',\n    zoomOutIcon = 'crosshair',\n    uiContext = 'toolbars';\n\n  // For external openers\n  (function () {\n    // let the opener know SVG Edit is ready (now that config is set up)\n    const w = window.opener || window.parent;\n    if (w) {\n      try {\n        /**\n         * Triggered on a containing `document` (of `window.opener`\n         * or `window.parent`) when the editor is loaded.\n         * @event module:SVGEditor#event:svgEditorReadyEvent\n         * @type {Event}\n         * @property {true} bubbles\n         * @property {true} cancelable\n         */\n        /**\n         * @name module:SVGEditor.svgEditorReadyEvent\n         * @type {module:SVGEditor#event:svgEditorReadyEvent}\n         */\n        const svgEditorReadyEvent = new w.CustomEvent('svgEditorReady', {\n          bubbles: true,\n          cancelable: true\n        });\n        w.document.documentElement.dispatchEvent(svgEditorReadyEvent);\n      } catch (e) {}\n    }\n  }());\n\n  // This sets up alternative dialog boxes. They mostly work the same way as\n  // their UI counterparts, expect instead of returning the result, a callback\n  // needs to be included that returns the result as its first parameter.\n  // In the future we may want to add additional types of dialog boxes, since\n  // they should be easy to handle this way.\n  (function () {\n    $('#dialog_container').draggable({\n      cancel: '#dialog_content, #dialog_buttons *',\n      containment: 'window'\n    }).css('position', 'absolute');\n    const box = $('#dialog_box'),\n      btnHolder = $('#dialog_buttons'),\n      dialogContent = $('#dialog_content'),\n      dbox = function (type, msg, callback, defaultVal, opts, changeCb, checkbox) {\n        dialogContent.html('<p>' + msg.replace(/\\n/g, '</p><p>') + '</p>')\n          .toggleClass('prompt', (type === 'prompt'));\n        btnHolder.empty();\n\n        const ok = $('<input type=\"button\" value=\"' + uiStrings.common.ok + '\">').appendTo(btnHolder);\n\n        if (type !== 'alert') {\n          $('<input type=\"button\" value=\"' + uiStrings.common.cancel + '\">')\n            .appendTo(btnHolder)\n            .click(function () {\n              box.hide();\n              if (callback) {\n                callback(false); // eslint-disable-line standard/no-callback-literal\n              }\n            });\n        }\n\n        let ctrl, chkbx;\n        if (type === 'prompt') {\n          ctrl = $('<input type=\"text\">').prependTo(btnHolder);\n          ctrl.val(defaultVal || '');\n          ctrl.bind('keydown', 'return', function () { ok.click(); });\n        } else if (type === 'select') {\n          const div = $('<div style=\"text-align:center;\">');\n          ctrl = $('<select>').appendTo(div);\n          if (checkbox) {\n            const label = $('<label>').text(checkbox.label);\n            chkbx = $('<input type=\"checkbox\">').appendTo(label);\n            chkbx.val(checkbox.value);\n            if (checkbox.tooltip) {\n              label.attr('title', checkbox.tooltip);\n            }\n            chkbx.prop('checked', !!checkbox.checked);\n            div.append($('<div>').append(label));\n          }\n          $.each(opts || [], function (opt, val) {\n            if (typeof val === 'object') {\n              ctrl.append($('<option>').val(val.value).html(val.text));\n            } else {\n              ctrl.append($('<option>').html(val));\n            }\n          });\n          dialogContent.append(div);\n          if (defaultVal) {\n            ctrl.val(defaultVal);\n          }\n          if (changeCb) {\n            ctrl.bind('change', 'return', changeCb);\n          }\n          ctrl.bind('keydown', 'return', function () { ok.click(); });\n        } else if (type === 'process') {\n          ok.hide();\n        }\n\n        box.show();\n\n        ok.click(function () {\n          box.hide();\n          const resp = (type === 'prompt' || type === 'select') ? ctrl.val() : true;\n          if (callback) {\n            if (chkbx) {\n              callback(resp, chkbx.prop('checked'));\n            } else {\n              callback(resp);\n            }\n          }\n        }).focus();\n\n        if (type === 'prompt' || type === 'select') {\n          ctrl.focus();\n        }\n      };\n\n    $.alert = function (msg, cb) { dbox('alert', msg, cb); };\n    $.confirm = function (msg, cb) { dbox('confirm', msg, cb); };\n    $.process_cancel = function (msg, cb) { dbox('process', msg, cb); };\n    $.prompt = function (msg, txt, cb) { dbox('prompt', msg, cb, txt); };\n    $.select = function (msg, opts, cb, changeCb, txt, checkbox) {\n      dbox('select', msg, cb, txt, opts, changeCb, checkbox);\n    };\n  }());\n\n  const setSelectMode = function () {\n    const curr = $('.tool_button_current');\n    if (curr.length && curr[0].id !== 'tool_select') {\n      curr.removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n    svgCanvas.setMode('select');\n    workarea.css('cursor', 'auto');\n  };\n\n  // used to make the flyouts stay on the screen longer the very first time\n  // const flyoutspeed = 1250; // Currently unused\n  // let textBeingEntered = false; // Currently unused\n  const origTitle = $('title:first').text();\n  // Make [1,2,5] array\n  const rIntervals = [];\n  for (let i = 0.1; i < 1E5; i *= 10) {\n    rIntervals.push(i);\n    rIntervals.push(2 * i);\n    rIntervals.push(5 * i);\n  }\n\n  // This function highlights the layer passed in (by fading out the other layers)\n  // if no layer is passed in, this function restores the other layers\n  const toggleHighlightLayer = function (layerNameToHighlight) {\n    let i;\n    const curNames = [], numLayers = svgCanvas.getCurrentDrawing().getNumLayers();\n    for (i = 0; i < numLayers; i++) {\n      curNames[i] = svgCanvas.getCurrentDrawing().getLayerName(i);\n    }\n\n    if (layerNameToHighlight) {\n      for (i = 0; i < numLayers; ++i) {\n        if (curNames[i] !== layerNameToHighlight) {\n          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);\n        }\n      }\n    } else {\n      for (i = 0; i < numLayers; ++i) {\n        svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);\n      }\n    }\n  };\n\n  const populateLayers = function () {\n    svgCanvas.clearSelection();\n    const layerlist = $('#layerlist tbody').empty();\n    const selLayerNames = $('#selLayerNames').empty();\n    const drawing = svgCanvas.getCurrentDrawing();\n    const currentLayerName = drawing.getCurrentLayerName();\n    const icon = $.getSvgIcon('eye');\n    let layer = svgCanvas.getCurrentDrawing().getNumLayers();\n    // we get the layers in the reverse z-order (the layer rendered on top is listed first)\n    while (layer--) {\n      const name = drawing.getLayerName(layer);\n      const layerTr = $('<tr class=\"layer\">').toggleClass('layersel', name === currentLayerName);\n      const layerVis = $('<td class=\"layervis\">').toggleClass('layerinvis', !drawing.getLayerVisibility(name));\n      const layerName = $('<td class=\"layername\">' + name + '</td>');\n      layerlist.append(layerTr.append(layerVis, layerName));\n      selLayerNames.append('<option value=\"' + name + '\">' + name + '</option>');\n    }\n    if (icon !== undefined) {\n      const copy = icon.clone();\n      $('td.layervis', layerlist).append(copy);\n      $.resizeSvgIcons({'td.layervis .svg_icon': 14});\n    }\n    // handle selection of layer\n    $('#layerlist td.layername')\n      .mouseup(function (evt) {\n        $('#layerlist tr.layer').removeClass('layersel');\n        $(this.parentNode).addClass('layersel');\n        svgCanvas.setCurrentLayer(this.textContent);\n        evt.preventDefault();\n      })\n      .mouseover(function () {\n        toggleHighlightLayer(this.textContent);\n      })\n      .mouseout(function () {\n        toggleHighlightLayer();\n      });\n    $('#layerlist td.layervis').click(function () {\n      const row = $(this.parentNode).prevAll().length;\n      const name = $('#layerlist tr.layer:eq(' + row + ') td.layername').text();\n      const vis = $(this).hasClass('layerinvis');\n      svgCanvas.setLayerVisibility(name, vis);\n      $(this).toggleClass('layerinvis');\n    });\n\n    // if there were too few rows, let's add a few to make it not so lonely\n    let num = 5 - $('#layerlist tr.layer').size();\n    while (num-- > 0) {\n      // FIXME: there must a better way to do this\n      layerlist.append('<tr><td style=\"color:white\">_</td><td/></tr>');\n    }\n  };\n\n  let editingsource = false;\n  let origSource = '';\n  const showSourceEditor = function (e, forSaving) {\n    if (editingsource) { return; }\n\n    editingsource = true;\n    origSource = svgCanvas.getSvgString();\n    $('#save_output_btns').toggle(!!forSaving);\n    $('#tool_source_back').toggle(!forSaving);\n    $('#svg_source_textarea').val(origSource);\n    $('#svg_source_editor').fadeIn();\n    $('#svg_source_textarea').focus();\n  };\n\n  let selectedElement = null;\n  let multiselected = false;\n\n  const togglePathEditMode = function (editmode, elems) {\n    $('#path_node_panel').toggle(editmode);\n    $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);\n    if (editmode) {\n      // Change select icon\n      $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      setIcon('#tool_select', 'select_node');\n      multiselected = false;\n      if (elems.length) {\n        selectedElement = elems[0];\n      }\n    } else {\n      setTimeout(() => {\n        setIcon('#tool_select', 'select');\n      }, 1000);\n    }\n  };\n\n  /**\n   * @type {module:svgcanvas.EventHandler}\n   * @param {external:Window} wind\n   * @param {module:svgcanvas.SvgCanvas#event:saved} svg The SVG source\n   * @listens module:svgcanvas.SvgCanvas#event:saved\n   * @returns {undefined}\n   */\n  const saveHandler = function (wind, svg) {\n    editor.showSaveWarning = false;\n\n    // by default, we add the XML prolog back, systems integrating SVG-edit (wikis, CMSs)\n    // can just provide their own custom save handler and might not want the XML prolog\n    svg = '<?xml version=\"1.0\"?>\\n' + svg;\n\n    // IE9 doesn't allow standalone Data URLs\n    // https://connect.microsoft.com/IE/feedback/details/542600/data-uri-images-fail-when-loaded-by-themselves\n    if (isIE()) {\n      showSourceEditor(0, true);\n      return;\n    }\n\n    // Since saving SVGs by opening a new window was removed in Chrome use artificial link-click\n    // https://stackoverflow.com/questions/45603201/window-is-not-allowed-to-navigate-top-frame-navigations-to-data-urls\n    const a = document.createElement('a');\n    a.href = 'data:image/svg+xml;base64,' + Utils.encode64(svg);\n    a.download = 'icon.svg';\n    a.style = 'display: none;';\n    document.body.append(a); // Need to append for Firefox\n\n    a.click();\n\n    // Alert will only appear the first time saved OR the\n    //   first time the bug is encountered\n    let done = $.pref('save_notice_done');\n\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', 'SVG');\n      // Check if FF and has <defs/>\n      if (isGecko()) {\n        if (svg.includes('<defs')) {\n          // warning about Mozilla bug #308590 when applicable (seems to be fixed now in Feb 2013)\n          note += '\\n\\n' + uiStrings.notification.defsFailOnSave;\n          $.pref('save_notice_done', 'all');\n          done = 'all';\n        } else {\n          $.pref('save_notice_done', 'part');\n        }\n      } else {\n        $.pref('save_notice_done', 'all');\n      }\n      if (done !== 'part') {\n        alert(note);\n      }\n    }\n  };\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:exported} data\n   * @listens module:svgcanvas.SvgCanvas#event:exported\n   * @returns {undefined}\n   */\n  const exportHandler = function (win, data) {\n    const {issues, exportWindowName} = data;\n\n    exportWindow = window.open(Utils.blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n\n    if (!exportWindow || exportWindow.closed) {\n      $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n\n    exportWindow.location.href = data.bloburl || data.datauri;\n    const done = $.pref('export_notice_done');\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', data.type);\n\n      // Check if there are issues\n      if (issues.length) {\n        const pre = '\\n \\u2022 ';\n        note += ('\\n\\n' + uiStrings.notification.noteTheseIssues + pre + issues.join(pre));\n      }\n\n      // Note that this will also prevent the notice even though new issues may appear later.\n      // May want to find a way to deal with that without annoying the user\n      $.pref('export_notice_done', 'all');\n      exportWindow.alert(note);\n    }\n  };\n\n  const operaRepaint = function () {\n    // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change\n    if (!window.opera) {\n      return;\n    }\n    $('<p/>').hide().appendTo('body').remove();\n  };\n\n  function setStrokeOpt (opt, changeElem) {\n    const {id} = opt;\n    const bits = id.split('_');\n    const pre = bits[0];\n    const val = bits[1];\n\n    if (changeElem) {\n      svgCanvas.setStrokeAttr('stroke-' + pre, val);\n    }\n    operaRepaint();\n    setIcon('#cur_' + pre, id, 20);\n    $(opt).addClass('current').siblings().removeClass('current');\n  }\n\n  /**\n  * This is a common function used when a tool has been clicked (chosen).\n  * It does several common things:\n  * - Removes the `tool_button_current` class from whatever tool currently has it.\n  * - Hides any flyouts.\n  * - Adds the `tool_button_current` class to the button passed in.\n  * @function module:SVGEDitor.toolButtonClick\n  * @param {string|Element} button The DOM element or string selector representing the toolbar button\n  * @param {boolean} noHiding Whether not to hide any flyouts\n  * @returns {boolean} Whether the button was disabled or not\n  */\n  const toolButtonClick = editor.toolButtonClick = function (button, noHiding) {\n    if ($(button).hasClass('disabled')) { return false; }\n    if ($(button).parent().hasClass('tools_flyout')) { return true; }\n    const fadeFlyouts = 'normal';\n    if (!noHiding) {\n      $('.tools_flyout').fadeOut(fadeFlyouts);\n    }\n    $('#styleoverrides').text('');\n    workarea.css('cursor', 'auto');\n    $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n    $(button).addClass('tool_button_current').removeClass('tool_button');\n    return true;\n  };\n\n  /**\n  * Unless the select toolbar button is disabled, sets the button\n  * and sets the select mode and cursor styles.\n  * @function module:SVGEditor.clickSelect\n  * @returns {undefined}\n  */\n  const clickSelect = editor.clickSelect = function () {\n    if (toolButtonClick('#tool_select')) {\n      svgCanvas.setMode('select');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n  };\n\n  /**\n  * Set a selected image's URL.\n  * @function module:SVGEditor.setImageURL\n  * @param {string} url\n  * @returns {undefined}\n  */\n  const setImageURL = editor.setImageURL = function (url) {\n    if (!url) {\n      url = defaultImageURL;\n    }\n    svgCanvas.setImageURL(url);\n    $('#image_url').val(url);\n\n    if (url.startsWith('data:')) {\n      // data URI found\n      $('#image_url').hide();\n      $('#change_image_url').show();\n    } else {\n      // regular URL\n      svgCanvas.embedImage(url, function (dataURI) {\n        // Couldn't embed, so show warning\n        $('#url_notice').toggle(!dataURI);\n        defaultImageURL = url;\n      });\n      $('#image_url').show();\n      $('#change_image_url').hide();\n    }\n  };\n\n  function setBackground (color, url) {\n    // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }\n    $.pref('bkgd_color', color);\n    $.pref('bkgd_url', url);\n\n    // This should be done in svgcanvas.js for the borderRect fill\n    svgCanvas.setBackground(color, url);\n  }\n\n  function promptImgURL ({cancelDeletes = false} = {}) {\n    let curhref = svgCanvas.getHref(selectedElement);\n    curhref = curhref.startsWith('data:') ? '' : curhref;\n    $.prompt(uiStrings.notification.enterNewImgURL, curhref, function (url) {\n      if (url) {\n        setImageURL(url);\n      } else if (cancelDeletes) {\n        svgCanvas.deleteSelectedElements();\n      }\n    });\n  }\n\n  const setInputWidth = function (elem) {\n    const w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);\n    $(elem).width(w);\n  };\n\n  function updateRulers (scanvas, zoom) {\n    if (!zoom) { zoom = svgCanvas.getZoom(); }\n    if (!scanvas) { scanvas = $('#svgcanvas'); }\n\n    let d, i;\n    const limit = 30000;\n    const contentElem = svgCanvas.getContentElem();\n    const units = getTypeMap();\n    const unit = units[curConfig.baseUnit]; // 1 = 1px\n\n    // draw x ruler then y ruler\n    for (d = 0; d < 2; d++) {\n      const isX = (d === 0);\n      const dim = isX ? 'x' : 'y';\n      const lentype = isX ? 'width' : 'height';\n      const contentDim = Number(contentElem.getAttribute(dim));\n\n      const $hcanvOrig = $('#ruler_' + dim + ' canvas:first');\n\n      // Bit of a hack to fully clear the canvas in Safari & IE9\n      const $hcanv = $hcanvOrig.clone();\n      $hcanvOrig.replaceWith($hcanv);\n\n      const hcanv = $hcanv[0];\n\n      // Set the canvas size to the width of the container\n      let rulerLen = scanvas[lentype]();\n      const totalLen = rulerLen;\n      hcanv.parentNode.style[lentype] = totalLen + 'px';\n      let ctx = hcanv.getContext('2d');\n      let ctxArr, num, ctxArrNum;\n\n      ctx.fillStyle = 'rgb(200,0,0)';\n      ctx.fillRect(0, 0, hcanv.width, hcanv.height);\n\n      // Remove any existing canvasses\n      $hcanv.siblings().remove();\n\n      // Create multiple canvases when necessary (due to browser limits)\n      if (rulerLen >= limit) {\n        ctxArrNum = parseInt(rulerLen / limit, 10) + 1;\n        ctxArr = [];\n        ctxArr[0] = ctx;\n        let copy;\n        for (i = 1; i < ctxArrNum; i++) {\n          hcanv[lentype] = limit;\n          copy = hcanv.cloneNode(true);\n          hcanv.parentNode.append(copy);\n          ctxArr[i] = copy.getContext('2d');\n        }\n\n        copy[lentype] = rulerLen % limit;\n\n        // set copy width to last\n        rulerLen = limit;\n      }\n\n      hcanv[lentype] = rulerLen;\n\n      const uMulti = unit * zoom;\n\n      // Calculate the main number interval\n      const rawM = 50 / uMulti;\n      let multi = 1;\n      for (i = 0; i < rIntervals.length; i++) {\n        num = rIntervals[i];\n        multi = num;\n        if (rawM <= num) {\n          break;\n        }\n      }\n\n      const bigInt = multi * uMulti;\n\n      ctx.font = '9px sans-serif';\n\n      let rulerD = ((contentDim / uMulti) % multi) * uMulti;\n      let labelPos = rulerD - bigInt;\n      // draw big intervals\n      let ctxNum = 0;\n      while (rulerD < totalLen) {\n        labelPos += bigInt;\n        // const realD = rulerD - contentDim; // Currently unused\n\n        const curD = Math.round(rulerD) + 0.5;\n        if (isX) {\n          ctx.moveTo(curD, 15);\n          ctx.lineTo(curD, 0);\n        } else {\n          ctx.moveTo(15, curD);\n          ctx.lineTo(0, curD);\n        }\n\n        num = (labelPos - contentDim) / uMulti;\n        let label;\n        if (multi >= 1) {\n          label = Math.round(num);\n        } else {\n          const decs = String(multi).split('.')[1].length;\n          label = num.toFixed(decs);\n        }\n\n        // Change 1000s to Ks\n        if (label !== 0 && label !== 1000 && label % 1000 === 0) {\n          label = (label / 1000) + 'K';\n        }\n\n        if (isX) {\n          ctx.fillText(label, rulerD + 2, 8);\n        } else {\n          // draw label vertically\n          const str = String(label).split('');\n          for (i = 0; i < str.length; i++) {\n            ctx.fillText(str[i], 1, (rulerD + 9) + i * 9);\n          }\n        }\n\n        const part = bigInt / 10;\n        // draw the small intervals\n        for (i = 1; i < 10; i++) {\n          let subD = Math.round(rulerD + part * i) + 0.5;\n          if (ctxArr && subD > rulerLen) {\n            ctxNum++;\n            ctx.stroke();\n            if (ctxNum >= ctxArrNum) {\n              i = 10;\n              rulerD = totalLen;\n              continue;\n            }\n            ctx = ctxArr[ctxNum];\n            rulerD -= limit;\n            subD = Math.round(rulerD + part * i) + 0.5;\n          }\n\n          // odd lines are slighly longer\n          const lineNum = (i % 2) ? 12 : 10;\n          if (isX) {\n            ctx.moveTo(subD, 15);\n            ctx.lineTo(subD, lineNum);\n          } else {\n            ctx.moveTo(15, subD);\n            ctx.lineTo(lineNum, subD);\n          }\n        }\n        rulerD += bigInt;\n      }\n      ctx.strokeStyle = '#000';\n      ctx.stroke();\n    }\n  }\n\n  /**\n  * @function module:SVGEditor.updateCanvas\n  * @param {boolean} center\n  * @param {module:math.XYObject} newCtr\n  * @returns {undefined}\n  */\n  const updateCanvas = editor.updateCanvas = function (center, newCtr) {\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n    const cnvs = $('#svgcanvas');\n\n    let w = workarea.width(), h = workarea.height();\n    const wOrig = w, hOrig = h;\n    const oldCtr = {\n      x: wArea[0].scrollLeft + wOrig / 2,\n      y: wArea[0].scrollTop + hOrig / 2\n    };\n    const multi = curConfig.canvas_expansion;\n    w = Math.max(wOrig, svgCanvas.contentW * zoom * multi);\n    h = Math.max(hOrig, svgCanvas.contentH * zoom * multi);\n\n    if (w === wOrig && h === hOrig) {\n      workarea.css('overflow', 'hidden');\n    } else {\n      workarea.css('overflow', 'scroll');\n    }\n\n    const oldCanY = cnvs.height() / 2;\n    const oldCanX = cnvs.width() / 2;\n    cnvs.width(w).height(h);\n    const newCanY = h / 2;\n    const newCanX = w / 2;\n    const offset = svgCanvas.updateCanvas(w, h);\n\n    const ratio = newCanX / oldCanX;\n\n    const scrollX = w / 2 - wOrig / 2;\n    const scrollY = h / 2 - hOrig / 2;\n\n    if (!newCtr) {\n      const oldDistX = oldCtr.x - oldCanX;\n      const newX = newCanX + oldDistX * ratio;\n\n      const oldDistY = oldCtr.y - oldCanY;\n      const newY = newCanY + oldDistY * ratio;\n\n      newCtr = {\n        x: newX,\n        y: newY\n      };\n    } else {\n      newCtr.x += offset.x;\n      newCtr.y += offset.y;\n    }\n\n    if (center) {\n      // Go to top-left for larger documents\n      if (svgCanvas.contentW > wArea.width()) {\n        // Top-left\n        workarea[0].scrollLeft = offset.x - 10;\n        workarea[0].scrollTop = offset.y - 10;\n      } else {\n        // Center\n        wArea[0].scrollLeft = scrollX;\n        wArea[0].scrollTop = scrollY;\n      }\n    } else {\n      wArea[0].scrollLeft = newCtr.x - wOrig / 2;\n      wArea[0].scrollTop = newCtr.y - hOrig / 2;\n    }\n    if (curConfig.showRulers) {\n      updateRulers(cnvs, zoom);\n      workarea.scroll();\n    }\n\n    if (urldata.storagePrompt !== true && editor.storagePromptState === 'ignore') {\n      $('#dialog_box').hide();\n    }\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n   * @returns {undefined}\n   */\n  const updateToolButtonState = function () {\n    let index, button;\n    const bNoFill = (svgCanvas.getColor('fill') === 'none');\n    const bNoStroke = (svgCanvas.getColor('stroke') === 'none');\n    const buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];\n    const buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];\n    if (bNoStroke) {\n      for (index in buttonsNeedingStroke) {\n        button = buttonsNeedingStroke[index];\n        if ($(button).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(button).addClass('disabled');\n      }\n    } else {\n      for (index in buttonsNeedingStroke) {\n        button = buttonsNeedingStroke[index];\n        $(button).removeClass('disabled');\n      }\n    }\n\n    if (bNoStroke && bNoFill) {\n      for (index in buttonsNeedingFillAndStroke) {\n        button = buttonsNeedingFillAndStroke[index];\n        if ($(button).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(button).addClass('disabled');\n      }\n    } else {\n      for (index in buttonsNeedingFillAndStroke) {\n        button = buttonsNeedingFillAndStroke[index];\n        $(button).removeClass('disabled');\n      }\n    }\n\n    svgCanvas.runExtensions('toolButtonStateUpdate', /** @type {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} */ {\n      nofill: bNoFill,\n      nostroke: bNoStroke\n    });\n\n    // Disable flyouts if all inside are disabled\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      let hasEnabled = false;\n      $(this).children().each(function () {\n        if (!$(this).hasClass('disabled')) {\n          hasEnabled = true;\n        }\n      });\n      shower.toggleClass('disabled', !hasEnabled);\n    });\n\n    operaRepaint();\n  };\n\n  // Updates the toolbar (colors, opacity, etc) based on the selected element\n  // This function also updates the opacity and id elements that are in the context panel\n  const updateToolbar = function () {\n    let i, len;\n    if (selectedElement != null) {\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        break;\n      case 'g':\n      case 'a':\n        // Look for common styles\n        const childs = selectedElement.getElementsByTagName('*');\n        let gWidth = null;\n        for (i = 0, len = childs.length; i < len; i++) {\n          const swidth = childs[i].getAttribute('stroke-width');\n\n          if (i === 0) {\n            gWidth = swidth;\n          } else if (gWidth !== swidth) {\n            gWidth = null;\n          }\n        }\n\n        $('#stroke_width').val(gWidth === null ? '' : gWidth);\n\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        break;\n      default:\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        $('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);\n        $('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');\n\n        let attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';\n\n        if ($('#linejoin_' + attr).length) {\n          setStrokeOpt($('#linejoin_' + attr)[0]);\n        }\n\n        attr = selectedElement.getAttribute('stroke-linecap') || 'butt';\n\n        if ($('#linecap_' + attr).length) {\n          setStrokeOpt($('#linecap_' + attr)[0]);\n        }\n      }\n    }\n\n    // All elements including image and group have opacity\n    if (selectedElement != null) {\n      const opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;\n      $('#group_opacity').val(opacPerc);\n      $('#opac_slider').slider('option', 'value', opacPerc);\n      $('#elem_id').val(selectedElement.id);\n      $('#elem_class').val(selectedElement.getAttribute('class'));\n    }\n\n    updateToolButtonState();\n  };\n\n  // updates the context panel tools based on the selected element\n  const updateContextPanel = function () {\n    let elem = selectedElement;\n    // If element has just been deleted, consider it null\n    if (elem != null && !elem.parentNode) { elem = null; }\n    const currentLayerName = svgCanvas.getCurrentDrawing().getCurrentLayerName();\n    const currentMode = svgCanvas.getMode();\n    const unit = curConfig.baseUnit !== 'px' ? curConfig.baseUnit : null;\n\n    const isNode = currentMode === 'pathedit'; // elem ? (elem.id && elem.id.startsWith('pathpointgrip')) : false;\n    const menuItems = $('#cmenu_canvas li');\n    $('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' +\n      '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' +\n      ' #use_panel, #a_panel').hide();\n    if (elem != null) {\n      const elname = elem.nodeName;\n      // If this is a link with no transform and one child, pretend\n      // its child is selected\n      // if (elname === 'a') { // && !$(elem).attr('transform')) {\n      //   elem = elem.firstChild;\n      // }\n\n      const angle = svgCanvas.getRotationAngle(elem);\n      $('#angle').val(angle);\n\n      const blurval = svgCanvas.getBlur(elem);\n      $('#blur').val(blurval);\n      $('#blur_slider').slider('option', 'value', blurval);\n\n      if (svgCanvas.addedNew) {\n        if (elname === 'image' && svgCanvas.getMode() === 'image') {\n          // Prompt for URL if not a data URL\n          if (!svgCanvas.getHref(elem).startsWith('data:')) {\n            promptImgURL({cancelDeletes: true});\n          }\n        }\n        /* else if (elname == 'text') {\n          // TODO: Do something here for new text\n        } */\n      }\n\n      if (!isNode && currentMode !== 'pathedit') {\n        $('#selected_panel').show();\n        // Elements in this array already have coord fields\n        if (['line', 'circle', 'ellipse'].includes(elname)) {\n          $('#xy_panel').hide();\n        } else {\n          let x, y;\n\n          // Get BBox vals for g, polyline and path\n          if (['g', 'polyline', 'path'].includes(elname)) {\n            const bb = svgCanvas.getStrokedBBox([elem]);\n            if (bb) {\n              ({x, y} = bb);\n            }\n          } else {\n            x = elem.getAttribute('x');\n            y = elem.getAttribute('y');\n          }\n\n          if (unit) {\n            x = convertUnit(x);\n            y = convertUnit(y);\n          }\n\n          $('#selected_x').val(x || 0);\n          $('#selected_y').val(y || 0);\n          $('#xy_panel').show();\n        }\n\n        // Elements in this array cannot be converted to a path\n        const noPath = !['image', 'text', 'path', 'g', 'use'].includes(elname);\n        $('#tool_topath').toggle(noPath);\n        $('#tool_reorient').toggle(elname === 'path');\n        $('#tool_reorient').toggleClass('disabled', angle === 0);\n      } else {\n        const point = path.getNodePoint();\n        $('#tool_add_subpath').removeClass('push_button_pressed').addClass('tool_button');\n        $('#tool_node_delete').toggleClass('disabled', !path.canDeleteNodes);\n\n        // Show open/close button based on selected point\n        setIcon('#tool_openclose_path', path.closed_subpath ? 'open_path' : 'close_path');\n\n        if (point) {\n          const segType = $('#seg_type');\n          if (unit) {\n            point.x = convertUnit(point.x);\n            point.y = convertUnit(point.y);\n          }\n          $('#path_node_x').val(point.x);\n          $('#path_node_y').val(point.y);\n          if (point.type) {\n            segType.val(point.type).removeAttr('disabled');\n          } else {\n            segType.val(4).attr('disabled', 'disabled');\n          }\n        }\n        return;\n      }\n\n      // update contextual tools here\n      const panels = {\n        g: [],\n        a: [],\n        rect: ['rx', 'width', 'height'],\n        image: ['width', 'height'],\n        circle: ['cx', 'cy', 'r'],\n        ellipse: ['cx', 'cy', 'rx', 'ry'],\n        line: ['x1', 'y1', 'x2', 'y2'],\n        text: [],\n        use: []\n      };\n\n      const {tagName} = elem;\n\n      // if ($(elem).data('gsvg')) {\n      //   $('#g_panel').show();\n      // }\n\n      let linkHref = null;\n      if (tagName === 'a') {\n        linkHref = svgCanvas.getHref(elem);\n        $('#g_panel').show();\n      }\n\n      if (elem.parentNode.tagName === 'a') {\n        if (!$(elem).siblings().length) {\n          $('#a_panel').show();\n          linkHref = svgCanvas.getHref(elem.parentNode);\n        }\n      }\n\n      // Hide/show the make_link buttons\n      $('#tool_make_link, #tool_make_link').toggle(!linkHref);\n\n      if (linkHref) {\n        $('#link_url').val(linkHref);\n      }\n\n      if (panels[tagName]) {\n        const curPanel = panels[tagName];\n\n        $('#' + tagName + '_panel').show();\n\n        $.each(curPanel, function (i, item) {\n          let attrVal = elem.getAttribute(item);\n          if (curConfig.baseUnit !== 'px' && elem[item]) {\n            const bv = elem[item].baseVal.value;\n            attrVal = convertUnit(bv);\n          }\n          $('#' + tagName + '_' + item).val(attrVal || 0);\n        });\n\n        if (tagName === 'text') {\n          $('#text_panel').css('display', 'inline');\n          $('#tool_font_size').css('display', 'inline');\n          if (svgCanvas.getItalic()) {\n            $('#tool_italic').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_italic').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          if (svgCanvas.getBold()) {\n            $('#tool_bold').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_bold').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          $('#font_family').val(elem.getAttribute('font-family'));\n          $('#font_size').val(elem.getAttribute('font-size'));\n          $('#text').val(elem.textContent);\n          if (svgCanvas.addedNew) {\n            // Timeout needed for IE9\n            setTimeout(function () {\n              $('#text').focus().select();\n            }, 100);\n          }\n        // text\n        } else if (tagName === 'image' && svgCanvas.getMode() === 'image') {\n          setImageURL(svgCanvas.getHref(elem));\n        // image\n        } else if (tagName === 'g' || tagName === 'use') {\n          $('#container_panel').show();\n          const title = svgCanvas.getTitle();\n          const label = $('#g_title')[0];\n          label.value = title;\n          setInputWidth(label);\n          $('#g_title').prop('disabled', tagName === 'use');\n        }\n      }\n      menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');\n      menuItems[((tagName === 'g' || !multiselected) ? 'dis' : 'en') + 'ableContextMenuItems']('#group');\n    // if (elem != null)\n    } else if (multiselected) {\n      $('#multiselected_panel').show();\n      menuItems\n        .enableContextMenuItems('#group')\n        .disableContextMenuItems('#ungroup');\n    } else {\n      menuItems.disableContextMenuItems('#delete,#cut,#copy,#group,#ungroup,#move_front,#move_up,#move_down,#move_back');\n    }\n\n    // update history buttons\n    $('#tool_undo').toggleClass('disabled', undoMgr.getUndoStackSize() === 0);\n    $('#tool_redo').toggleClass('disabled', undoMgr.getRedoStackSize() === 0);\n\n    svgCanvas.addedNew = false;\n\n    if ((elem && !isNode) || multiselected) {\n      // update the selected elements' layer\n      $('#selLayerNames').removeAttr('disabled').val(currentLayerName);\n\n      // Enable regular menu options\n      canvMenu.enableContextMenuItems(\n        '#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back'\n      );\n    } else {\n      $('#selLayerNames').attr('disabled', 'disabled');\n    }\n  };\n\n  const updateWireFrame = function () {\n    // Test support\n    if (supportsNonSS) { return; }\n\n    const rule = `\n      #workarea.wireframe #svgcontent * {\n        stroke-width: ${1 / svgCanvas.getZoom()}px;\n      }\n    `;\n    $('#wireframe_rules').text(workarea.hasClass('wireframe') ? rule : '');\n  };\n\n  let curContext = '';\n\n  const updateTitle = function (title) {\n    title = title || svgCanvas.getDocumentTitle();\n    const newTitle = origTitle + (title ? ': ' + title : '');\n\n    // Remove title update with current context info, isn't really necessary\n    // if (curContext) {\n    //   new_title = new_title + curContext;\n    // }\n    $('title:first').text(newTitle);\n  };\n\n  // called when we've selected a different element\n  /**\n  *\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:selected} elems Array of elements that were selected\n  * @listens module:svgcanvas.SvgCanvas#event:selected\n  * @fires module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n  * @returns {undefined}\n  */\n  const selectedChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n    const isNode = mode === 'pathedit';\n    // if elems[1] is present, then we have more than one element\n    selectedElement = (elems.length === 1 || elems[1] == null ? elems[0] : null);\n    multiselected = (elems.length >= 2 && elems[1] != null);\n    if (selectedElement != null) {\n      // unless we're already in always set the mode of the editor to select because\n      // upon creation of a text element the editor is switched into\n      // select mode and this event fires - we need our UI to be in sync\n\n      if (!isNode) {\n        updateToolbar();\n      }\n    } // if (elem != null)\n\n    // Deal with pathedit mode\n    togglePathEditMode(isNode, elems);\n    updateContextPanel();\n    svgCanvas.runExtensions('selectedChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} */ {\n      elems,\n      selectedElement,\n      multiselected\n    });\n  };\n\n  // Call when part of element is in process of changing, generally\n  // on mousemove actions like rotate, move, etc.\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:transition} elems\n   * @listens module:svgcanvas.SvgCanvas#event:transition\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementTransition\n   * @returns {undefined}\n   */\n  const elementTransition = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    const elem = elems[0];\n\n    if (!elem) {\n      return;\n    }\n\n    multiselected = (elems.length >= 2 && elems[1] != null);\n    // Only updating fields for single elements for now\n    if (!multiselected) {\n      switch (mode) {\n      case 'rotate':\n        const ang = svgCanvas.getRotationAngle(elem);\n        $('#angle').val(ang);\n        $('#tool_reorient').toggleClass('disabled', ang === 0);\n        break;\n\n      // TODO: Update values that change on move/resize, etc\n      // case 'select':\n      // case 'resize':\n      //   break;\n      }\n    }\n    svgCanvas.runExtensions('elementTransition', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementTransition} */ {\n      elems\n    });\n  };\n\n  /**\n   * Test whether an element is a layer or not.\n   * @param {SVGGElement} elem - The SVGGElement to test.\n   * @returns {boolean} True if the element is a layer\n   */\n  function isLayer (elem) {\n    return elem && elem.tagName === 'g' && Layer.CLASS_REGEX.test(elem.getAttribute('class'));\n  }\n\n  // called when any element has changed\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:changed} elems\n   * @listens module:svgcanvas.SvgCanvas#event:changed\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementChanged\n   * @returns {undefined}\n   */\n  const elementChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n\n    for (let i = 0; i < elems.length; ++i) {\n      const elem = elems[i];\n\n      const isSvgElem = (elem && elem.tagName === 'svg');\n      if (isSvgElem || isLayer(elem)) {\n        populateLayers();\n        // if the element changed was the svg, then it could be a resolution change\n        if (isSvgElem) {\n          updateCanvas();\n        }\n      // Update selectedElement if element is no longer part of the image.\n      // This occurs for the text elements in Firefox\n      } else if (elem && selectedElement && selectedElement.parentNode == null) {\n        // || elem && elem.tagName == \"path\" && !multiselected) { // This was added in r1430, but not sure why\n        selectedElement = elem;\n      }\n    }\n\n    editor.showSaveWarning = true;\n\n    // we update the contextual panel with potentially new\n    // positional/sizing information (we DON'T want to update the\n    // toolbar here as that creates an infinite loop)\n    // also this updates the history buttons\n\n    // we tell it to skip focusing the text control if the\n    // text element was previously in focus\n    updateContextPanel();\n\n    // In the event a gradient was flipped:\n    if (selectedElement && mode === 'select') {\n      paintBox.fill.update();\n      paintBox.stroke.update();\n    }\n\n    svgCanvas.runExtensions('elementChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementChanged} */ {\n      elems\n    });\n  };\n\n  /**\n   * @returns {undefined}\n   */\n  const zoomDone = function () {\n    updateWireFrame();\n    // updateCanvas(); // necessary?\n  };\n\n  /**\n  * @typedef {PlainObject} module:SVGEditor.BBoxObjectWithFactor (like `DOMRect`)\n  * @property {Float} x\n  * @property {Float} y\n  * @property {Float} width\n  * @property {Float} height\n  * @property {Float} [factor] Needed if width or height are 0\n  * @property {Float} [zoom]\n  * @see module:svgcanvas.SvgCanvas#event:zoomed\n  */\n\n  /**\n  * @function module:svgcanvas.SvgCanvas#zoomChanged\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:zoomed} bbox\n  * @param {boolean} autoCenter\n  * @listens module:svgcanvas.SvgCanvas#event:zoomed\n  * @returns {undefined}\n  */\n  const zoomChanged = svgCanvas.zoomChanged = function (win, bbox, autoCenter) {\n    const scrbar = 15,\n      // res = svgCanvas.getResolution(), // Currently unused\n      wArea = workarea;\n    // const canvasPos = $('#svgcanvas').position(); // Currently unused\n    const zInfo = svgCanvas.setBBoxZoom(bbox, wArea.width() - scrbar, wArea.height() - scrbar);\n    if (!zInfo) { return; }\n    const zoomlevel = zInfo.zoom,\n      bb = zInfo.bbox;\n\n    if (zoomlevel < 0.001) {\n      changeZoom({value: 0.1});\n      return;\n    }\n\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    if (autoCenter) {\n      updateCanvas();\n    } else {\n      updateCanvas(false, {x: bb.x * zoomlevel + (bb.width * zoomlevel) / 2, y: bb.y * zoomlevel + (bb.height * zoomlevel) / 2});\n    }\n\n    if (svgCanvas.getMode() === 'zoom' && bb.width) {\n      // Go to select if a zoom box was drawn\n      setSelectMode();\n    }\n\n    zoomDone();\n  };\n\n  const changeZoom = function (ctl) {\n    const zoomlevel = ctl.value / 100;\n    if (zoomlevel < 0.001) {\n      ctl.value = 0.1;\n      return;\n    }\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n\n    zoomChanged(window, {\n      width: 0,\n      height: 0,\n      // center pt of scroll position\n      x: (wArea[0].scrollLeft + wArea.width() / 2) / zoom,\n      y: (wArea[0].scrollTop + wArea.height() / 2) / zoom,\n      zoom: zoomlevel\n    }, true);\n  };\n\n  $('#cur_context_panel').delegate('a', 'click', function () {\n    const link = $(this);\n    if (link.attr('data-root')) {\n      svgCanvas.leaveContext();\n    } else {\n      svgCanvas.setContext(link.text());\n    }\n    svgCanvas.clearSelection();\n    return false;\n  });\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:contextset} context\n   * @listens module:svgcanvas.SvgCanvas#event:contextset\n   * @returns {undefined}\n   */\n  const contextChanged = function (win, context) {\n    let linkStr = '';\n    if (context) {\n      let str = '';\n      linkStr = '<a href=\"#\" data-root=\"y\">' + svgCanvas.getCurrentDrawing().getCurrentLayerName() + '</a>';\n\n      $(context).parentsUntil('#svgcontent > g').andSelf().each(function () {\n        if (this.id) {\n          str += ' > ' + this.id;\n          if (this !== context) {\n            linkStr += ' > <a href=\"#\">' + this.id + '</a>';\n          } else {\n            linkStr += ' > ' + this.id;\n          }\n        }\n      });\n\n      curContext = str;\n    } else {\n      curContext = null;\n    }\n    $('#cur_context_panel').toggle(!!context).html(linkStr);\n\n    updateTitle();\n  };\n\n  // Makes sure the current selected paint is available to work with\n  const prepPaints = function () {\n    paintBox.fill.prep();\n    paintBox.stroke.prep();\n  };\n\n  const flyoutFuncs = {};\n\n  const setFlyoutTitles = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      if (shower.data('isLibrary')) {\n        return;\n      }\n\n      const tooltips = $(this).children().map(function () {\n        return this.title;\n      }).get();\n      shower[0].title = tooltips.join(' / ');\n    });\n  };\n\n  const allHolders = {};\n  /**\n   * @param {GenericObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector\n   * @returns {undefined}\n   */\n  const setupFlyouts = function (holders) {\n    $.each(holders, function (holdSel, btnOpts) {\n      if (!allHolders[holdSel]) {\n        allHolders[holdSel] = [];\n      }\n      allHolders[holdSel].push(...btnOpts);\n\n      const buttons = $(holdSel).children().not('.tool_button_evt_handled');\n      const showSel = holdSel + '_show';\n      const shower = $(showSel);\n      let def = false;\n      buttons.addClass('tool_button tool_button_evt_handled')\n        .unbind('click mousedown mouseup') // may not be necessary\n        .each(function () {\n          // Get this button's options\n          const idSel = '#' + this.getAttribute('id');\n          const [i, opts] = Object.entries(btnOpts).find(([i, {sel}]) => {\n            return sel === idSel;\n          });\n\n          // Remember the function that goes with this ID\n          flyoutFuncs[opts.sel] = opts.fn;\n\n          if (opts.isDefault) { def = i; }\n\n          /**\n           * Clicking the icon in flyout should set this set's icon.\n           * @param {Event} ev\n           * @returns {undefined}\n           */\n          const flyoutAction = function (ev) {\n            let options = opts;\n            // Find the currently selected tool if comes from keystroke\n            if (ev.type === 'keydown') {\n              const flyoutIsSelected = $(options.parent + '_show').hasClass('tool_button_current');\n              const currentOperation = $(options.parent + '_show').attr('data-curopt');\n              Object.entries(holders[opts.parent]).some(([i, tool]) => {\n                if (tool.sel !== currentOperation) {\n                  return;\n                }\n                if (!ev.shiftKey || !flyoutIsSelected) {\n                  options = tool;\n                } else {\n                  // If flyout is selected, allow shift key to iterate through subitems\n                  i = parseInt(i, 10);\n                  // Use `allHolders` to include both extension `includeWith` and toolbarButtons\n                  options = allHolders[opts.parent][i + 1] ||\n                    holders[opts.parent][0];\n                }\n                return true;\n              });\n            }\n            if ($(this).hasClass('disabled')) { return false; }\n            if (toolButtonClick(showSel)) {\n              options.fn();\n            }\n            let icon;\n            if (options.icon) {\n              icon = $.getSvgIcon(options.icon, true);\n            } else {\n              icon = $(options.sel).children().eq(0).clone();\n            }\n\n            icon[0].setAttribute('width', shower.width());\n            icon[0].setAttribute('height', shower.height());\n            shower.children(':not(.flyout_arrow_horiz)').remove();\n            shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode\n          };\n\n          $(this).mouseup(flyoutAction);\n\n          if (opts.key) {\n            $(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);\n          }\n        });\n\n      if (def) {\n        shower.attr('data-curopt', btnOpts[def].sel);\n      } else if (!shower.attr('data-curopt')) {\n        // Set first as default\n        shower.attr('data-curopt', btnOpts[0].sel);\n      }\n\n      let timer;\n      const pos = $(showSel).position();\n\n      // Clicking the \"show\" icon should set the current mode\n      shower.mousedown(function (evt) {\n        if (shower.hasClass('disabled')) {\n          return false;\n        }\n        const holder = $(holdSel);\n        const l = pos.left + 34;\n        const w = holder.width() * -1;\n        const time = holder.data('shown_popop') ? 200 : 0;\n        timer = setTimeout(function () {\n          // Show corresponding menu\n          if (!shower.data('isLibrary')) {\n            holder.css('left', w).show().animate({\n              left: l\n            }, 150);\n          } else {\n            holder.css('left', l).show();\n          }\n          holder.data('shown_popop', true);\n        }, time);\n        evt.preventDefault();\n      }).mouseup(function (evt) {\n        clearTimeout(timer);\n        const opt = $(this).attr('data-curopt');\n        // Is library and popped up, so do nothing\n        if (shower.data('isLibrary') && $(showSel.replace('_show', '')).is(':visible')) {\n          toolButtonClick(showSel, true);\n          return;\n        }\n        if (toolButtonClick(showSel) && flyoutFuncs[opt]) {\n          flyoutFuncs[opt]();\n        }\n      });\n      // $('#tools_rect').mouseleave(function () { $('#tools_rect').fadeOut(); });\n    });\n    setFlyoutTitles();\n    setFlyoutPositions();\n  };\n\n  const makeFlyoutHolder = function (id, child) {\n    const div = $('<div>', {\n      class: 'tools_flyout',\n      id\n    }).appendTo('#svg_editor').append(child);\n\n    return div;\n  };\n\n  // TODO: Combine this with addDropDown or find other way to optimize\n  const addAltDropDown = function (elem, list, callback, opts) {\n    const button = $(elem);\n    const {dropUp} = opts;\n    list = $(list);\n    if (dropUp) {\n      $(elem).addClass('dropup');\n    }\n    list.find('li').bind('mouseup', function () {\n      if (opts.seticon) {\n        setIcon('#cur_' + button[0].id, $(this).children());\n        $(this).addClass('current').siblings().removeClass('current');\n      }\n      callback.apply(this, arguments);\n    });\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      onButton = false;\n    });\n\n    // const height = list.height(); // Currently unused\n    button.bind('mousedown', function () {\n      const off = button.offset();\n      if (dropUp) {\n        off.top -= list.height();\n        off.left += 8;\n      } else {\n        off.top += button.height();\n      }\n      list.offset(off);\n\n      if (!button.hasClass('down')) {\n        list.show();\n        onButton = true;\n      } else {\n        // CSS position must be reset for Webkit\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    if (opts.multiclick) {\n      list.mousedown(function () {\n        onButton = true;\n      });\n    }\n  };\n\n  const extsPreLang = [];\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext\n   * @listens module:svgcanvas.SvgCanvas#event:extension_added\n   * @returns {Promise} Resolves to `undefined`\n   */\n  const extAdded = async function (win, ext) {\n    if (!ext) {\n      return;\n    }\n    let cbCalled = false;\n    let resizeDone = false;\n\n    if (ext.langReady) {\n      if (editor.langChanged) { // We check for this since the \"lang\" pref could have been set by storage\n        const lang = $.pref('lang');\n        await ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n        loadedExtensionNames.push(ext.name);\n      } else {\n        extsPreLang.push(ext);\n      }\n    }\n\n    function prepResize () {\n      if (resizeTimer) {\n        clearTimeout(resizeTimer);\n        resizeTimer = null;\n      }\n      if (!resizeDone) {\n        resizeTimer = setTimeout(function () {\n          resizeDone = true;\n          setIconSize($.pref('iconsize'));\n        }, 50);\n      }\n    }\n\n    const runCallback = function () {\n      if (ext.callback && !cbCalled) {\n        cbCalled = true;\n        ext.callback.call(editor);\n      }\n    };\n\n    const btnSelects = [];\n\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ContextTool\n    * @property {string} panel The ID of the existing panel to which the tool is being added. Required.\n    * @property {string} id The ID of the actual tool element. Required.\n    * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"change\", external:jQuery.Function>} events DOM event names keyed to associated functions. Example: `{change () { alert('Option was changed') } }`. \"change\" event is one specifically handled for the \"button-select\" type. Required.\n    * @property {string} title The tooltip text that will appear when the user hovers over the tool. Required.\n    * @property {\"tool_button\"|\"select\"|\"button-select\"|\"input\"|string} type The type of tool being added. Expected.\n    * @property {PlainObject.<string, string>} [options] List of options and their labels for select tools. Example: `{1: 'One', 2: 'Two', all: 'All' }`. Required by \"select\" tools.\n    * @property {string} [container_id] The ID to be given to the tool's container element.\n    * @property {string} [defval] Default value\n    * @property {string|Integer} [colnum] Added as part of the option list class.\n    * @property {string} [label] Label associated with the tool, visible in the UI\n    * @property {Integer} [size] Value of the \"size\" attribute of the tool input\n    * @property {module:jQuerySpinButton.SpinButtonConfig} [spindata] When added to a tool of type \"input\", this tool becomes a \"spinner\" which allows the number to be in/decreased.\n    */\n    if (ext.context_tools) {\n      $.each(ext.context_tools, function (i, tool) {\n        // Add select tool\n        const contId = tool.container_id ? (' id=\"' + tool.container_id + '\"') : '';\n\n        let panel = $('#' + tool.panel);\n        // create the panel if it doesn't exist\n        if (!panel.length) {\n          panel = $('<div>', {id: tool.panel}).appendTo('#tools_top');\n        }\n\n        let html;\n        // TODO: Allow support for other types, or adding to existing tool\n        switch (tool.type) {\n        case 'tool_button':\n          html = '<div class=\"tool_button\">' + tool.id + '</div>';\n          const div = $(html).appendTo(panel);\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              $(div).bind(evt, func);\n            });\n          }\n          break;\n        case 'select':\n          html = '<label' + contId + '>' +\n            '<select id=\"' + tool.id + '\">';\n          $.each(tool.options, function (val, text) {\n            const sel = (val === tool.defval) ? ' selected' : '';\n            html += '<option value=\"' + val + '\"' + sel + '>' + text + '</option>';\n          });\n          html += '</select></label>';\n          // Creates the tool, hides & adds it, returns the select element\n          const sel = $(html).appendTo(panel).find('select');\n\n          $.each(tool.events, function (evt, func) {\n            $(sel).bind(evt, func);\n          });\n          break;\n        case 'button-select':\n          html = '<div id=\"' + tool.id + '\" class=\"dropdown toolset\" title=\"' + tool.title + '\">' +\n            '<div id=\"cur_' + tool.id + '\" class=\"icon_label\"></div><button></button></div>';\n\n          const list = $('<ul id=\"' + tool.id + '_opts\"></ul>').appendTo('#option_lists');\n\n          if (tool.colnum) {\n            list.addClass('optcols' + tool.colnum);\n          }\n\n          // Creates the tool, hides & adds it, returns the select element\n          /* const dropdown = */ $(html).appendTo(panel).children();\n\n          btnSelects.push({\n            elem: ('#' + tool.id),\n            list: ('#' + tool.id + '_opts'),\n            title: tool.title,\n            callback: tool.events.change,\n            cur: ('#cur_' + tool.id)\n          });\n\n          break;\n        case 'input':\n          html = '<label' + contId + '>' +\n            '<span id=\"' + tool.id + '_label\">' +\n            tool.label + ':</span>' +\n            '<input id=\"' + tool.id + '\" title=\"' + tool.title +\n            '\" size=\"' + (tool.size || '4') +\n            '\" value=\"' + (tool.defval || '') + '\" type=\"text\"/></label>';\n\n          // Creates the tool, hides & adds it, returns the select element\n\n          // Add to given tool.panel\n          const inp = $(html).appendTo(panel).find('input');\n\n          if (tool.spindata) {\n            inp.SpinButton(tool.spindata);\n          }\n\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              inp.bind(evt, func);\n            });\n          }\n          break;\n\n        default:\n          break;\n        }\n      });\n    }\n\n    const {svgicons} = ext;\n    if (ext.buttons) {\n      const fallbackObj = {},\n        placementObj = {},\n        holders = {};\n\n      /**\n      * @typedef {GenericArray} module:SVGEditor.KeyArray\n      * @property {string} 0 The key to bind (on `keydown`)\n      * @property {boolean} 1 Whether to `preventDefault` on the `keydown` event\n      * @property {boolean} 2 Not apparently in use (NoDisableInInput)\n      */\n      /**\n       * @typedef {string|module:SVGEditor.KeyArray} module:SVGEditor.Key\n       */\n      /**\n      * @typedef {PlainObject} module:SVGEditor.Button\n      * @property {string} id A unique identifier for this button. If SVG icons are used, this must match the ID used in the icon file. Required.\n      * @property {\"mode_flyout\"|\"mode\"|\"context\"|\"app_menu\"} type Type of button. Required.\n      * @property {string} title The tooltip text that will appear when the user hovers over the icon. Required.\n      * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"click\", external:jQuery.Function>} events DOM event names with associated functions. Example: `{click () { alert('Button was clicked') } }`. Click is used with `includeWith` and `type` of \"mode_flyout\" (and \"mode\"); any events may be added if `list` is not present. Expected.\n      * @property {string} panel The ID of the context panel to be included, if type is \"context\". Required only if type is \"context\".\n      * @property {string} icon The file path to the raster version of the icon image source. Required only if no `svgicons` is supplied from [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse}.\n      * @property {string} [svgicon] If absent, will utilize the button \"id\"; used to set \"placement\" on the `svgIcons` call\n      * @property {string} [list] Points to the \"id\" of a `context_tools` item of type \"button-select\" into which the button will be added as a panel list item\n      * @property {Integer} [position] The numeric index for placement; defaults to last position (as of the time of extension addition) if not present. For use with {@link http://api.jquery.com/eq/}.\n      * @property {boolean} [isDefault] Whether or not the button is the default. Used with `list`.\n      * @property {PlainObject} [includeWith] Object with flyout menu data\n      * @property {boolean} [includeWith.isDefault] Indicates whether button is default in flyout list or not.\n      * @property {string} includeWith.button jQuery selector of the existing button to be joined. Example: '#tool_line'. Required if `includeWith` is used.\n      * @property {\"last\"|Integer} [includeWith.position] Position of icon in flyout list; will be added to end if not indicated. Integer is for use with {@link http://api.jquery.com/eq/}.\n      * @property {module:SVGEditor.Key} [key] The key to bind to the button\n      */\n      // Add buttons given by extension\n      $.each(ext.buttons, function (i, /** @type {module:SVGEditor.Button} */ btn) {\n        let {id} = btn;\n        let num = i;\n        // Give button a unique ID\n        while ($('#' + id).length) {\n          id = btn.id + '_' + (++num);\n        }\n\n        let icon;\n        if (!svgicons) {\n          icon = $('<img src=\"' + btn.icon + '\">');\n        } else {\n          fallbackObj[id] = btn.icon;\n          const svgicon = btn.svgicon || btn.id;\n          if (btn.type === 'app_menu') {\n            placementObj['#' + id + ' > div'] = svgicon;\n          } else {\n            placementObj['#' + id] = svgicon;\n          }\n        }\n\n        let cls, parent;\n\n        // Set button up according to its type\n        switch (btn.type) {\n        case 'mode_flyout':\n        case 'mode':\n          cls = 'tool_button';\n          parent = '#tools_left';\n          break;\n        case 'context':\n          cls = 'tool_button';\n          parent = '#' + btn.panel;\n          // create the panel if it doesn't exist\n          if (!$(parent).length) {\n            $('<div>', {id: btn.panel}).appendTo('#tools_top');\n          }\n          break;\n        case 'app_menu':\n          cls = '';\n          parent = '#main_menu ul';\n          break;\n        }\n        let flyoutHolder, showBtn, refData, refBtn;\n        const button = $((btn.list || btn.type === 'app_menu') ? '<li/>' : '<div/>')\n          .attr('id', id)\n          .attr('title', btn.title)\n          .addClass(cls);\n        if (!btn.includeWith && !btn.list) {\n          if ('position' in btn) {\n            if ($(parent).children().eq(btn.position).length) {\n              $(parent).children().eq(btn.position).before(button);\n            } else {\n              $(parent).children().last().before(button);\n            }\n          } else {\n            button.appendTo(parent);\n          }\n\n          if (btn.type === 'mode_flyout') {\n          // Add to flyout menu / make flyout menu\n            // const opts = btn.includeWith;\n            // // opts.button, default, position\n            refBtn = $(button);\n\n            flyoutHolder = refBtn.parent();\n            // Create a flyout menu if there isn't one already\n            let tlsId;\n            if (!refBtn.parent().hasClass('tools_flyout')) {\n              // Create flyout placeholder\n              tlsId = refBtn[0].id.replace('tool_', 'tools_');\n              showBtn = refBtn.clone()\n                .attr('id', tlsId + '_show')\n                .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n              refBtn.before(showBtn);\n\n              // Create a flyout div\n              flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n              flyoutHolder.data('isLibrary', true);\n              showBtn.data('isLibrary', true);\n            }\n            // refData = Actions.getButtonData(opts.button);\n\n            placementObj['#' + tlsId + '_show'] = btn.id;\n            // TODO: Find way to set the current icon using the iconloader if this is not default\n\n            // Include data for extension button as well as ref button\n            /* curH = */ holders['#' + flyoutHolder[0].id] = [{\n              sel: '#' + id,\n              fn: btn.events.click,\n              icon: btn.id,\n              // key: btn.key,\n              isDefault: true\n            }]; // , refData\n            //\n            // // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n            //\n            // const pos = ('position' in opts)?opts.position:'last';\n            // const len = flyoutHolder.children().length;\n            //\n            // // Add at given position or end\n            // if (!isNaN(pos) && pos >= 0 && pos < len) {\n            //   flyoutHolder.children().eq(pos).before(button);\n            // } else {\n            //   flyoutHolder.append(button);\n            //   curH.reverse();\n            // }\n          } else if (btn.type === 'app_menu') {\n            button.append('<div>').append(btn.title);\n          }\n        } else if (btn.list) {\n          // Add button to list\n          button.addClass('push_button');\n          $('#' + btn.list + '_opts').append(button);\n          if (btn.isDefault) {\n            $('#cur_' + btn.list).append(button.children().clone());\n            const svgicon = btn.svgicon || btn.id;\n            placementObj['#cur_' + btn.list] = svgicon;\n          }\n        } else if (btn.includeWith) {\n          // Add to flyout menu / make flyout menu\n          const opts = btn.includeWith;\n          // opts.button, default, position\n          refBtn = $(opts.button);\n\n          flyoutHolder = refBtn.parent();\n          // Create a flyout menu if there isn't one already\n          let tlsId;\n          if (!refBtn.parent().hasClass('tools_flyout')) {\n            // Create flyout placeholder\n            tlsId = refBtn[0].id.replace('tool_', 'tools_');\n            showBtn = refBtn.clone()\n              .attr('id', tlsId + '_show')\n              .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n            refBtn.before(showBtn);\n            // Create a flyout div\n            flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n          }\n\n          refData = Actions.getButtonData(opts.button);\n\n          if (opts.isDefault) {\n            placementObj['#' + tlsId + '_show'] = btn.id;\n          }\n          // TODO: Find way to set the current icon using the iconloader if this is not default\n\n          // Include data for extension button as well as ref button\n          const curH = holders['#' + flyoutHolder[0].id] = [{\n            sel: '#' + id,\n            fn: btn.events.click,\n            icon: btn.id,\n            key: btn.key,\n            isDefault: Boolean(btn.includeWith && btn.includeWith.isDefault)\n          }, refData];\n\n          // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n\n          const pos = ('position' in opts) ? opts.position : 'last';\n          const len = flyoutHolder.children().length;\n\n          // Add at given position or end\n          if (!isNaN(pos) && pos >= 0 && pos < len) {\n            flyoutHolder.children().eq(pos).before(button);\n          } else {\n            flyoutHolder.append(button);\n            curH.reverse();\n          }\n        }\n\n        if (!svgicons) {\n          button.append(icon);\n        }\n\n        if (!btn.list) {\n          // Add given events to button\n          $.each(btn.events, function (name, func) {\n            if (name === 'click' && btn.type === 'mode') {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map extension click events as well\n              if (isTouch() && name === 'click') {\n                name = 'mousedown';\n              }\n              if (btn.includeWith) {\n                button.bind(name, func);\n              } else {\n                button.bind(name, function () {\n                  if (toolButtonClick(button)) {\n                    func();\n                  }\n                });\n              }\n              if (btn.key) {\n                $(document).bind('keydown', btn.key, func);\n                if (btn.title) {\n                  button.attr('title', btn.title + ' [' + btn.key + ']');\n                }\n              }\n            } else {\n              button.bind(name, func);\n            }\n          });\n        }\n\n        setupFlyouts(holders);\n      });\n\n      $.each(btnSelects, function () {\n        addAltDropDown(this.elem, this.list, this.callback, {seticon: true});\n      });\n\n      if (svgicons) {\n        return new Promise((resolve, reject) => {\n          $.svgIcons(svgicons, {\n            w: 24, h: 24,\n            id_match: false,\n            no_img: (!isWebkit()),\n            fallback: fallbackObj,\n            placement: placementObj,\n            callback (icons) {\n              // Non-ideal hack to make the icon match the current size\n              // if (curPrefs.iconsize && curPrefs.iconsize !== 'm') {\n              if ($.pref('iconsize') !== 'm') {\n                prepResize();\n              }\n              runCallback();\n              resolve();\n            }\n          });\n        });\n      }\n    }\n    return runCallback();\n  };\n\n  const getPaint = function (color, opac, type) {\n    // update the editor's fill paint\n    const opts = {alpha: opac};\n    if (color.startsWith('url(#')) {\n      let refElem = svgCanvas.getRefElem(color);\n      if (refElem) {\n        refElem = refElem.cloneNode(true);\n      } else {\n        refElem = $('#' + type + '_color defs *')[0];\n      }\n      opts[refElem.tagName] = refElem;\n    } else if (color.startsWith('#')) {\n      opts.solidColor = color.substr(1);\n    } else {\n      opts.solidColor = 'none';\n    }\n    return new $.jGraduate.Paint(opts);\n  };\n\n  // $('#text').focus(function () { textBeingEntered = true; });\n  // $('#text').blur(function () { textBeingEntered = false; });\n\n  // bind the selected event to our function that handles updates to the UI\n  svgCanvas.bind('selected', selectedChanged);\n  svgCanvas.bind('transition', elementTransition);\n  svgCanvas.bind('changed', elementChanged);\n  svgCanvas.bind('saved', saveHandler);\n  svgCanvas.bind('exported', exportHandler);\n  svgCanvas.bind('exportedPDF', function (win, data) {\n    if (!data.output) { // Ignore Chrome\n      return;\n    }\n    const {exportWindowName} = data;\n    if (exportWindowName) {\n      exportWindow = window.open('', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n    }\n    if (!exportWindow || exportWindow.closed) {\n      $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n    exportWindow.location.href = data.output;\n  });\n  svgCanvas.bind('zoomed', zoomChanged);\n  svgCanvas.bind('zoomDone', zoomDone);\n  svgCanvas.bind(\n    'updateCanvas',\n    /**\n     * @param {external:Window} win\n     * @param {false} center\n     * @param {module:math.XYObject} newCtr\n     * @listens module:svgcanvas.SvgCanvas#event:updateCanvas\n     * @returns {undefined}\n     */\n    function (win, {center, newCtr}) {\n      updateCanvas(center, newCtr);\n    }\n  );\n  svgCanvas.bind('contextset', contextChanged);\n  svgCanvas.bind('extension_added', extAdded);\n  svgCanvas.textActions.setInputElem($('#text')[0]);\n\n  let str = '<div class=\"palette_item\" data-rgb=\"none\"></div>';\n  $.each(palette, function (i, item) {\n    str += '<div class=\"palette_item\" style=\"background-color: ' + item +\n      ';\" data-rgb=\"' + item + '\"></div>';\n  });\n  $('#palette').append(str);\n\n  // Set up editor background functionality\n  // TODO add checkerboard as \"pattern\"\n  const colorBlocks = ['#FFF', '#888', '#000']; // ,'url(data:image/gif;base64,R0lGODlhEAAQAIAAAP%2F%2F%2F9bW1iH5BAAAAAAALAAAAAAQABAAAAIfjG%2Bgq4jM3IFLJgpswNly%2FXkcBpIiVaInlLJr9FZWAQA7)'];\n  str = '';\n  $.each(colorBlocks, function () {\n    str += '<div class=\"color_block\" style=\"background-color:' + this + ';\"></div>';\n  });\n  $('#bg_blocks').append(str);\n  const blocks = $('#bg_blocks div');\n  const curBg = 'cur_background';\n  blocks.each(function () {\n    const blk = $(this);\n    blk.click(function () {\n      blocks.removeClass(curBg);\n      $(this).addClass(curBg);\n    });\n  });\n\n  setBackground($.pref('bkgd_color'), $.pref('bkgd_url'));\n\n  $('#image_save_opts input').val([$.pref('img_save')]);\n\n  const changeRectRadius = function (ctl) {\n    svgCanvas.setRectRadius(ctl.value);\n  };\n\n  const changeFontSize = function (ctl) {\n    svgCanvas.setFontSize(ctl.value);\n  };\n\n  const changeStrokeWidth = function (ctl) {\n    let val = ctl.value;\n    if (val === 0 && selectedElement && ['line', 'polyline'].includes(selectedElement.nodeName)) {\n      val = ctl.value = 1;\n    }\n    svgCanvas.setStrokeWidth(val);\n  };\n\n  const changeRotationAngle = function (ctl) {\n    svgCanvas.setRotationAngle(ctl.value);\n    $('#tool_reorient').toggleClass('disabled', parseInt(ctl.value, 10) === 0);\n  };\n\n  const changeOpacity = function (ctl, val) {\n    if (val == null) { val = ctl.value; }\n    $('#group_opacity').val(val);\n    if (!ctl || !ctl.handle) {\n      $('#opac_slider').slider('option', 'value', val);\n    }\n    svgCanvas.setOpacity(val / 100);\n  };\n\n  const changeBlur = function (ctl, val, noUndo) {\n    if (val == null) { val = ctl.value; }\n    $('#blur').val(val);\n    let complete = false;\n    if (!ctl || !ctl.handle) {\n      $('#blur_slider').slider('option', 'value', val);\n      complete = true;\n    }\n    if (noUndo) {\n      svgCanvas.setBlurNoUndo(val);\n    } else {\n      svgCanvas.setBlur(val, complete);\n    }\n  };\n\n  $('#stroke_style').change(function () {\n    svgCanvas.setStrokeAttr('stroke-dasharray', $(this).val());\n    operaRepaint();\n  });\n\n  $('#stroke_linejoin').change(function () {\n    svgCanvas.setStrokeAttr('stroke-linejoin', $(this).val());\n    operaRepaint();\n  });\n\n  // Lose focus for select elements when changed (Allows keyboard shortcuts to work better)\n  $('select').change(function () { $(this).blur(); });\n\n  // fired when user wants to move elements to another layer\n  let promptMoveLayerOnce = false;\n  $('#selLayerNames').change(function () {\n    const destLayer = this.options[this.selectedIndex].value;\n    const confirmStr = uiStrings.notification.QmoveElemsToLayer.replace('%s', destLayer);\n    const moveToLayer = function (ok) {\n      if (!ok) { return; }\n      promptMoveLayerOnce = true;\n      svgCanvas.moveSelectedToLayer(destLayer);\n      svgCanvas.clearSelection();\n      populateLayers();\n    };\n    if (destLayer) {\n      if (promptMoveLayerOnce) {\n        moveToLayer(true);\n      } else {\n        $.confirm(confirmStr, moveToLayer);\n      }\n    }\n  });\n\n  $('#font_family').change(function () {\n    svgCanvas.setFontFamily(this.value);\n  });\n\n  $('#seg_type').change(function () {\n    svgCanvas.setSegType($(this).val());\n  });\n\n  $('#text').bind('keyup input', function () {\n    svgCanvas.setTextContent(this.value);\n  });\n\n  $('#image_url').change(function () {\n    setImageURL(this.value);\n  });\n\n  $('#link_url').change(function () {\n    if (this.value.length) {\n      svgCanvas.setLinkURL(this.value);\n    } else {\n      svgCanvas.removeHyperlink();\n    }\n  });\n\n  $('#g_title').change(function () {\n    svgCanvas.setGroupTitle(this.value);\n  });\n\n  $('.attr_changer').change(function () {\n    const attr = this.getAttribute('data-attr');\n    let val = this.value;\n    const valid = isValidUnit(attr, val, selectedElement);\n\n    if (!valid) {\n      $.alert(uiStrings.notification.invalidAttrValGiven);\n      this.value = selectedElement.getAttribute(attr);\n      return false;\n    }\n\n    if (attr !== 'id' && attr !== 'class') {\n      if (isNaN(val)) {\n        val = svgCanvas.convertToNum(attr, val);\n      } else if (curConfig.baseUnit !== 'px') {\n        // Convert unitless value to one with given unit\n\n        const unitData = getTypeMap();\n\n        if (selectedElement[attr] || svgCanvas.getMode() === 'pathedit' || attr === 'x' || attr === 'y') {\n          val *= unitData[curConfig.baseUnit];\n        }\n      }\n    }\n\n    // if the user is changing the id, then de-select the element first\n    // change the ID, then re-select it with the new ID\n    if (attr === 'id') {\n      const elem = selectedElement;\n      svgCanvas.clearSelection();\n      elem.id = val;\n      svgCanvas.addToSelection([elem], true);\n    } else {\n      svgCanvas.changeSelectedAttribute(attr, val);\n    }\n    this.blur();\n  });\n\n  // Prevent selection of elements when shift-clicking\n  $('#palette').mouseover(function () {\n    const inp = $('<input type=\"hidden\">');\n    $(this).append(inp);\n    inp.focus().remove();\n  });\n\n  $('.palette_item').mousedown(function (evt) {\n    // shift key or right click for stroke\n    const picker = evt.shiftKey || evt.button === 2 ? 'stroke' : 'fill';\n    let color = $(this).data('rgb');\n    let paint;\n\n    // Webkit-based browsers returned 'initial' here for no stroke\n    if (color === 'none' || color === 'transparent' || color === 'initial') {\n      color = 'none';\n      paint = new $.jGraduate.Paint();\n    } else {\n      paint = new $.jGraduate.Paint({alpha: 100, solidColor: color.substr(1)});\n    }\n\n    paintBox[picker].setPaint(paint);\n    svgCanvas.setColor(picker, color);\n\n    if (color !== 'none' && svgCanvas.getPaintOpacity(picker) !== 1) {\n      svgCanvas.setPaintOpacity(picker, 1.0);\n    }\n    updateToolButtonState();\n  }).bind('contextmenu', function (e) { e.preventDefault(); });\n\n  $('#toggle_stroke_tools').on('click', function () {\n    $('#tools_bottom').toggleClass('expanded');\n  });\n\n  (function () {\n    const wArea = workarea[0];\n\n    let lastX = null, lastY = null,\n      panning = false, keypan = false;\n\n    $('#svgcanvas').bind('mousemove mouseup', function (evt) {\n      if (panning === false) { return; }\n\n      wArea.scrollLeft -= (evt.clientX - lastX);\n      wArea.scrollTop -= (evt.clientY - lastY);\n\n      lastX = evt.clientX;\n      lastY = evt.clientY;\n\n      if (evt.type === 'mouseup') { panning = false; }\n      return false;\n    }).mousedown(function (evt) {\n      if (evt.button === 1 || keypan === true) {\n        panning = true;\n        lastX = evt.clientX;\n        lastY = evt.clientY;\n        return false;\n      }\n    });\n\n    $(window).mouseup(function () {\n      panning = false;\n    });\n\n    $(document).bind('keydown', 'space', function (evt) {\n      svgCanvas.spaceKey = keypan = true;\n      evt.preventDefault();\n    }).bind('keyup', 'space', function (evt) {\n      evt.preventDefault();\n      svgCanvas.spaceKey = keypan = false;\n    }).bind('keydown', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomOutIcon);\n      }\n    }).bind('keyup', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomInIcon);\n      }\n    });\n\n    /**\n    * @param {boolean} active\n    * @returns {undefined}\n    */\n    editor.setPanning = function (active) {\n      svgCanvas.spaceKey = keypan = active;\n    };\n  }());\n\n  (function () {\n    const button = $('#main_icon');\n    const overlay = $('#main_icon span');\n    const list = $('#main_menu');\n\n    let onButton = false;\n    let height = 0;\n    let jsHover = true;\n    let setClick = false;\n\n    /*\n    // Currently unused\n    const hideMenu = function () {\n      list.fadeOut(200);\n    };\n    */\n\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('buttondown');\n        // do not hide if it was the file input as that input needs to be visible\n        // for its change event to fire\n        if (evt.target.tagName !== 'INPUT') {\n          list.fadeOut(200);\n        } else if (!setClick) {\n          setClick = true;\n          $(evt.target).click(function () {\n            list.css('margin-left', '-9999px').show();\n          });\n        }\n      }\n      onButton = false;\n    }).mousedown(function (evt) {\n      // $('.contextMenu').hide();\n      const islib = $(evt.target).closest('div.tools_flyout, .contextMenu').length;\n      if (!islib) {\n        $('.tools_flyout:visible,.contextMenu').fadeOut(250);\n      }\n    });\n\n    overlay.bind('mousedown', function () {\n      if (!button.hasClass('buttondown')) {\n        // Margin must be reset in case it was changed before;\n        list.css('margin-left', 0).show();\n        if (!height) {\n          height = list.height();\n        }\n        // Using custom animation as slideDown has annoying 'bounce effect'\n        list.css('height', 0).animate({\n          height\n        }, 200);\n        onButton = true;\n      } else {\n        list.fadeOut(200);\n      }\n      button.toggleClass('buttondown buttonup');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    const listItems = $('#main_menu li');\n\n    // Check if JS method of hovering needs to be used (Webkit bug)\n    listItems.mouseover(function () {\n      jsHover = ($(this).css('background-color') === 'rgba(0, 0, 0, 0)');\n\n      listItems.unbind('mouseover');\n      if (jsHover) {\n        listItems.mouseover(function () {\n          this.style.backgroundColor = '#FFC';\n        }).mouseout(function () {\n          this.style.backgroundColor = 'transparent';\n          return true;\n        });\n      }\n    });\n  }());\n  // Made public for UI customization.\n  // TODO: Group UI functions into a public editor.ui interface.\n  /**\n   * See {@link http://api.jquery.com/bind/#bind-eventType-eventData-handler}\n   * @callback module:SVGEditor.DropDownCallback\n   * @param {external:jQuery.Event} ev See {@link http://api.jquery.com/Types/#Event}\n   * @listens external:jQuery.Event\n   * @returns {undefined|boolean} Calls `preventDefault()` and `stopPropagation()`\n  */\n  /**\n   * @param {Element|string} elem DOM Element or selector\n   * @param {module:SVGEditor.DropDownCallback} callback Mouseup callback\n   * @param {boolean} dropUp\n   * @returns {undefined}\n  */\n  editor.addDropDown = function (elem, callback, dropUp) {\n    if (!$(elem).length) { return; } // Quit if called on non-existent element\n    const button = $(elem).find('button');\n    const list = $(elem).find('ul').attr('id', $(elem)[0].id + '-list');\n    if (dropUp) {\n      $(elem).addClass('dropup');\n    } else {\n      // Move list to place where it can overflow container\n      $('#option_lists').append(list);\n    }\n    list.find('li').bind('mouseup', callback);\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n      }\n      onButton = false;\n    });\n\n    button.bind('mousedown', function () {\n      if (!button.hasClass('down')) {\n        if (!dropUp) {\n          const pos = $(elem).position();\n          list.css({\n            top: pos.top + 24,\n            left: pos.left - 10\n          });\n        }\n        list.show();\n        onButton = true;\n      } else {\n        list.hide();\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n  };\n\n  editor.addDropDown('#font_family_dropdown', function () {\n    $('#font_family').val($(this).text()).change();\n  });\n\n  editor.addDropDown('#opacity_dropdown', function () {\n    if ($(this).find('div').length) { return; }\n    const perc = parseInt($(this).text().split('%')[0], 10);\n    changeOpacity(false, perc);\n  }, true);\n\n  // For slider usage, see: http://jqueryui.com/demos/slider/\n  $('#opac_slider').slider({\n    start () {\n      $('#opacity_dropdown li:not(.special)').hide();\n    },\n    stop () {\n      $('#opacity_dropdown li').show();\n      $(window).mouseup();\n    },\n    slide (evt, ui) {\n      changeOpacity(ui);\n    }\n  });\n\n  editor.addDropDown('#blur_dropdown', $.noop);\n\n  let slideStart = false;\n  $('#blur_slider').slider({\n    max: 10,\n    step: 0.1,\n    stop (evt, ui) {\n      slideStart = false;\n      changeBlur(ui);\n      $('#blur_dropdown li').show();\n      $(window).mouseup();\n    },\n    start () {\n      slideStart = true;\n    },\n    slide (evt, ui) {\n      changeBlur(ui, null, slideStart);\n    }\n  });\n\n  editor.addDropDown('#zoom_dropdown', function () {\n    const item = $(this);\n    const val = item.data('val');\n    if (val) {\n      zoomChanged(window, val);\n    } else {\n      changeZoom({value: parseFloat(item.text())});\n    }\n  }, true);\n\n  addAltDropDown('#stroke_linecap', '#linecap_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#stroke_linejoin', '#linejoin_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#tool_position', '#position_opts', function () {\n    const letter = this.id.replace('tool_pos', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, 'page');\n  }, {multiclick: true});\n\n  /*\n\n  When a flyout icon is selected\n    (if flyout) {\n    - Change the icon\n    - Make pressing the button run its stuff\n    }\n    - Run its stuff\n\n  When its shortcut key is pressed\n    - If not current in list, do as above\n    , else:\n    - Just run its stuff\n\n  */\n\n  // Unfocus text input when workarea is mousedowned.\n  (function () {\n    let inp;\n    const unfocus = function () {\n      $(inp).blur();\n    };\n\n    $('#svg_editor').find('button, select, input:not(#text)').focus(function () {\n      inp = this;\n      uiContext = 'toolbars';\n      workarea.mousedown(unfocus);\n    }).blur(function () {\n      uiContext = 'canvas';\n      workarea.unbind('mousedown', unfocus);\n      // Go back to selecting text if in textedit mode\n      if (svgCanvas.getMode() === 'textedit') {\n        $('#text').focus();\n      }\n    });\n  }());\n\n  const clickFHPath = function () {\n    if (toolButtonClick('#tool_fhpath')) {\n      svgCanvas.setMode('fhpath');\n    }\n  };\n\n  const clickLine = function () {\n    if (toolButtonClick('#tool_line')) {\n      svgCanvas.setMode('line');\n    }\n  };\n\n  const clickSquare = function () {\n    if (toolButtonClick('#tool_square')) {\n      svgCanvas.setMode('square');\n    }\n  };\n\n  const clickRect = function () {\n    if (toolButtonClick('#tool_rect')) {\n      svgCanvas.setMode('rect');\n    }\n  };\n\n  const clickFHRect = function () {\n    if (toolButtonClick('#tool_fhrect')) {\n      svgCanvas.setMode('fhrect');\n    }\n  };\n\n  const clickCircle = function () {\n    if (toolButtonClick('#tool_circle')) {\n      svgCanvas.setMode('circle');\n    }\n  };\n\n  const clickEllipse = function () {\n    if (toolButtonClick('#tool_ellipse')) {\n      svgCanvas.setMode('ellipse');\n    }\n  };\n\n  const clickFHEllipse = function () {\n    if (toolButtonClick('#tool_fhellipse')) {\n      svgCanvas.setMode('fhellipse');\n    }\n  };\n\n  const clickImage = function () {\n    if (toolButtonClick('#tool_image')) {\n      svgCanvas.setMode('image');\n    }\n  };\n\n  const clickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      svgCanvas.setMode('zoom');\n      workarea.css('cursor', zoomInIcon);\n    }\n  };\n\n  const zoomImage = function (multiplier) {\n    const res = svgCanvas.getResolution();\n    multiplier = multiplier ? res.zoom * multiplier : 1;\n    // setResolution(res.w * multiplier, res.h * multiplier, true);\n    $('#zoom').val(multiplier * 100);\n    svgCanvas.setZoom(multiplier);\n    zoomDone();\n    updateCanvas(true);\n  };\n\n  const dblclickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      zoomImage();\n      setSelectMode();\n    }\n  };\n\n  const clickText = function () {\n    if (toolButtonClick('#tool_text')) {\n      svgCanvas.setMode('text');\n    }\n  };\n\n  const clickPath = function () {\n    if (toolButtonClick('#tool_path')) {\n      svgCanvas.setMode('path');\n    }\n  };\n\n  // Delete is a contextual tool that only appears in the ribbon if\n  // an element has been selected\n  const deleteSelected = function () {\n    if (selectedElement != null || multiselected) {\n      svgCanvas.deleteSelectedElements();\n    }\n  };\n\n  const cutSelected = function () {\n    if (selectedElement != null || multiselected) {\n      svgCanvas.cutSelectedElements();\n    }\n  };\n\n  const copySelected = function () {\n    if (selectedElement != null || multiselected) {\n      svgCanvas.copySelectedElements();\n    }\n  };\n\n  const pasteInCenter = function () {\n    const zoom = svgCanvas.getZoom();\n    const x = (workarea[0].scrollLeft + workarea.width() / 2) / zoom - svgCanvas.contentW;\n    const y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;\n    svgCanvas.pasteElements('point', x, y);\n  };\n\n  const moveToTopSelected = function () {\n    if (selectedElement != null) {\n      svgCanvas.moveToTopSelectedElement();\n    }\n  };\n\n  const moveToBottomSelected = function () {\n    if (selectedElement != null) {\n      svgCanvas.moveToBottomSelectedElement();\n    }\n  };\n\n  const moveUpDownSelected = function (dir) {\n    if (selectedElement != null) {\n      svgCanvas.moveUpDownSelected(dir);\n    }\n  };\n\n  const convertToPath = function () {\n    if (selectedElement != null) {\n      svgCanvas.convertToPath();\n    }\n  };\n\n  const reorientPath = function () {\n    if (selectedElement != null) {\n      path.reorient();\n    }\n  };\n\n  const makeHyperlink = function () {\n    if (selectedElement != null || multiselected) {\n      $.prompt(uiStrings.notification.enterNewLinkURL, 'http://', function (url) {\n        if (url) { svgCanvas.makeHyperlink(url); }\n      });\n    }\n  };\n\n  const moveSelected = function (dx, dy) {\n    if (selectedElement != null || multiselected) {\n      if (curConfig.gridSnapping) {\n        // Use grid snap value regardless of zoom level\n        const multi = svgCanvas.getZoom() * curConfig.snappingStep;\n        dx *= multi;\n        dy *= multi;\n      }\n      svgCanvas.moveSelectedElements(dx, dy);\n    }\n  };\n\n  const linkControlPoints = function () {\n    $('#tool_node_link').toggleClass('push_button_pressed tool_button');\n    const linked = $('#tool_node_link').hasClass('push_button_pressed');\n    path.linkControlPoints(linked);\n  };\n\n  const clonePathNode = function () {\n    if (path.getNodePoint()) {\n      path.clonePathNode();\n    }\n  };\n\n  const deletePathNode = function () {\n    if (path.getNodePoint()) {\n      path.deletePathNode();\n    }\n  };\n\n  const addSubPath = function () {\n    const button = $('#tool_add_subpath');\n    const sp = !button.hasClass('push_button_pressed');\n    button.toggleClass('push_button_pressed tool_button');\n    path.addSubPath(sp);\n  };\n\n  const opencloseSubPath = function () {\n    path.opencloseSubPath();\n  };\n\n  const selectNext = function () {\n    svgCanvas.cycleElement(1);\n  };\n\n  const selectPrev = function () {\n    svgCanvas.cycleElement(0);\n  };\n\n  const rotateSelected = function (cw, step) {\n    if (selectedElement == null || multiselected) { return; }\n    if (!cw) { step *= -1; }\n    const angle = parseFloat($('#angle').val()) + step;\n    svgCanvas.setRotationAngle(angle);\n    updateContextPanel();\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n   * @returns {undefined}\n   */\n  const clickClear = function () {\n    const [x, y] = curConfig.dimensions;\n    $.confirm(uiStrings.notification.QwantToClear, function (ok) {\n      if (!ok) { return; }\n      setSelectMode();\n      svgCanvas.clear();\n      svgCanvas.setResolution(x, y);\n      updateCanvas(true);\n      zoomImage();\n      populateLayers();\n      updateContextPanel();\n      prepPaints();\n      svgCanvas.runExtensions('onNewDocument');\n    });\n  };\n\n  const clickBold = function () {\n    svgCanvas.setBold(!svgCanvas.getBold());\n    updateContextPanel();\n    return false;\n  };\n\n  const clickItalic = function () {\n    svgCanvas.setItalic(!svgCanvas.getItalic());\n    updateContextPanel();\n    return false;\n  };\n\n  const clickSave = function () {\n    // In the future, more options can be provided here\n    const saveOpts = {\n      images: $.pref('img_save'),\n      round_digits: 6\n    };\n    svgCanvas.save(saveOpts);\n  };\n\n  let loadingURL;\n  const clickExport = function () {\n    $.select('Select an image type for export: ', [\n      // See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support\n      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'\n      'PNG',\n      'JPEG', 'BMP', 'WEBP', 'PDF'\n    ], async function (imgType) { // todo: replace hard-coded msg with uiStrings.notification.\n      if (!imgType) {\n        return;\n      }\n      // Open placeholder window (prevents popup)\n      let exportWindowName;\n      function openExportWindow () {\n        const str = uiStrings.notification.loadingImage;\n        if (curConfig.exportWindowType === 'new') {\n          editor.exportWindowCt++;\n        }\n        exportWindowName = curConfig.canvasName + editor.exportWindowCt;\n        let popHTML, popURL;\n        if (loadingURL) {\n          popURL = loadingURL;\n        } else {\n          popHTML = `<!DOCTYPE html><html>\n            <head>\n              <meta charset=\"utf-8\">\n              <title>${str}</title>\n            </head>\n            <body><h1>${str}</h1></body>\n          <html>`;\n          if (typeof URL !== 'undefined' && URL.createObjectURL) {\n            const blob = new Blob([popHTML], {type: 'text/html'});\n            popURL = URL.createObjectURL(blob);\n          } else {\n            popURL = 'data:text/html;base64;charset=utf-8,' + Utils.encode64(popHTML);\n          }\n          loadingURL = popURL;\n        }\n        exportWindow = window.open(popURL, exportWindowName);\n      }\n      const chrome = isChrome();\n      if (imgType === 'PDF') {\n        if (!customExportPDF && !chrome) {\n          openExportWindow();\n        }\n        svgCanvas.exportPDF(exportWindowName);\n      } else {\n        if (!customExportImage) {\n          openExportWindow();\n        }\n        const quality = parseInt($('#image-slider').val(), 10) / 100;\n        /* const results = */ await svgCanvas.rasterExport(imgType, quality, exportWindowName);\n      }\n    }, function () {\n      const sel = $(this);\n      if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {\n        if (!$('#image-slider').length) {\n          $(`<div><label>${uiStrings.ui.quality}\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>`).appendTo(sel.parent());\n        }\n      } else {\n        $('#image-slider').parent().remove();\n      }\n    });\n  };\n\n  // by default, svgCanvas.open() is a no-op.\n  // it is up to an extension mechanism (opera widget, etc)\n  // to call setCustomHandlers() which will make it do something\n  const clickOpen = function () {\n    svgCanvas.open();\n  };\n\n  const clickImport = function () {\n  };\n\n  const clickUndo = function () {\n    if (undoMgr.getUndoStackSize() > 0) {\n      undoMgr.undo();\n      populateLayers();\n    }\n  };\n\n  const clickRedo = function () {\n    if (undoMgr.getRedoStackSize() > 0) {\n      undoMgr.redo();\n      populateLayers();\n    }\n  };\n\n  const clickGroup = function () {\n    // group\n    if (multiselected) {\n      svgCanvas.groupSelectedElements();\n    // ungroup\n    } else if (selectedElement) {\n      svgCanvas.ungroupSelectedElement();\n    }\n  };\n\n  const clickClone = function () {\n    svgCanvas.cloneSelectedElements(20, 20);\n  };\n\n  const clickAlign = function () {\n    const letter = this.id.replace('tool_align', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());\n  };\n\n  const clickWireframe = function () {\n    $('#tool_wireframe').toggleClass('push_button_pressed tool_button');\n    workarea.toggleClass('wireframe');\n\n    if (supportsNonSS) { return; }\n    const wfRules = $('#wireframe_rules');\n    if (!wfRules.length) {\n      /* wfRules = */ $('<style id=\"wireframe_rules\"></style>').appendTo('head');\n    } else {\n      wfRules.empty();\n    }\n\n    updateWireFrame();\n  };\n\n  $('#svg_docprops_container, #svg_prefs_container').draggable({\n    cancel: 'button,fieldset',\n    containment: 'window'\n  }).css('position', 'absolute');\n\n  let docprops = false;\n  let preferences = false;\n\n  const showDocProperties = function () {\n    if (docprops) { return; }\n    docprops = true;\n\n    // This selects the correct radio button by using the array notation\n    $('#image_save_opts input').val([$.pref('img_save')]);\n\n    // update resolution option with actual resolution\n    const res = svgCanvas.getResolution();\n    if (curConfig.baseUnit !== 'px') {\n      res.w = convertUnit(res.w) + curConfig.baseUnit;\n      res.h = convertUnit(res.h) + curConfig.baseUnit;\n    }\n\n    $('#canvas_width').val(res.w);\n    $('#canvas_height').val(res.h);\n    $('#canvas_title').val(svgCanvas.getDocumentTitle());\n\n    $('#svg_docprops').show();\n  };\n\n  const showPreferences = function () {\n    if (preferences) { return; }\n    preferences = true;\n    $('#main_menu').hide();\n\n    // Update background color with current one\n    const blocks = $('#bg_blocks div');\n    const curBg = 'cur_background';\n    const canvasBg = curPrefs.bkgd_color;\n    const url = $.pref('bkgd_url');\n    blocks.each(function () {\n      const blk = $(this);\n      const isBg = blk.css('background-color') === canvasBg;\n      blk.toggleClass(curBg, isBg);\n      if (isBg) { $('#canvas_bg_url').removeClass(curBg); }\n    });\n    if (!canvasBg) { blocks.eq(0).addClass(curBg); }\n    if (url) {\n      $('#canvas_bg_url').val(url);\n    }\n    $('#grid_snapping_on').prop('checked', curConfig.gridSnapping);\n    $('#grid_snapping_step').attr('value', curConfig.snappingStep);\n    $('#grid_color').attr('value', curConfig.gridColor);\n\n    $('#svg_prefs').show();\n  };\n\n  const hideSourceEditor = function () {\n    $('#svg_source_editor').hide();\n    editingsource = false;\n    $('#svg_source_textarea').blur();\n  };\n\n  const saveSourceEditor = function () {\n    if (!editingsource) { return; }\n\n    const saveChanges = function () {\n      svgCanvas.clearSelection();\n      hideSourceEditor();\n      zoomImage();\n      populateLayers();\n      updateTitle();\n      prepPaints();\n    };\n\n    if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {\n      $.confirm(uiStrings.notification.QerrorsRevertToSource, function (ok) {\n        if (!ok) { return false; }\n        saveChanges();\n      });\n    } else {\n      saveChanges();\n    }\n    setSelectMode();\n  };\n\n  const hideDocProperties = function () {\n    $('#svg_docprops').hide();\n    $('#canvas_width,#canvas_height').removeAttr('disabled');\n    $('#resolution')[0].selectedIndex = 0;\n    $('#image_save_opts input').val([$.pref('img_save')]);\n    docprops = false;\n  };\n\n  const hidePreferences = function () {\n    $('#svg_prefs').hide();\n    preferences = false;\n  };\n\n  const saveDocProperties = function () {\n    // set title\n    const newTitle = $('#canvas_title').val();\n    updateTitle(newTitle);\n    svgCanvas.setDocumentTitle(newTitle);\n\n    // update resolution\n    const width = $('#canvas_width'), w = width.val();\n    const height = $('#canvas_height'), h = height.val();\n\n    if (w !== 'fit' && !isValidUnit('width', w)) {\n      $.alert(uiStrings.notification.invalidAttrValGiven);\n      width.parent().addClass('error');\n      return false;\n    }\n\n    width.parent().removeClass('error');\n\n    if (h !== 'fit' && !isValidUnit('height', h)) {\n      $.alert(uiStrings.notification.invalidAttrValGiven);\n      height.parent().addClass('error');\n      return false;\n    }\n\n    height.parent().removeClass('error');\n\n    if (!svgCanvas.setResolution(w, h)) {\n      $.alert(uiStrings.notification.noContentToFitTo);\n      return false;\n    }\n\n    // Set image save option\n    $.pref('img_save', $('#image_save_opts :checked').val());\n    updateCanvas();\n    hideDocProperties();\n  };\n\n  /**\n  * Save user preferences based on current values in the UI.\n  * @function module:SVGEditor.savePreferences\n  * @returns {undefined}\n  */\n  const savePreferences = editor.savePreferences = async function () {\n    // Set background\n    const color = $('#bg_blocks div.cur_background').css('background-color') || '#FFF';\n    setBackground(color, $('#canvas_bg_url').val());\n\n    // set language\n    const lang = $('#lang_select').val();\n    if (lang !== $.pref('lang')) {\n      const {langParam, langData} = await editor.putLocale(lang, goodLangs, curConfig);\n      await setLang(langParam, langData);\n    }\n\n    // set icon size\n    setIconSize($('#iconsize').val());\n\n    // set grid setting\n    curConfig.gridSnapping = $('#grid_snapping_on')[0].checked;\n    curConfig.snappingStep = $('#grid_snapping_step').val();\n    curConfig.gridColor = $('#grid_color').val();\n    curConfig.showRulers = $('#show_rulers')[0].checked;\n\n    $('#rulers').toggle(curConfig.showRulers);\n    if (curConfig.showRulers) { updateRulers(); }\n    curConfig.baseUnit = $('#base_unit').val();\n\n    svgCanvas.setConfig(curConfig);\n\n    updateCanvas();\n    hidePreferences();\n  };\n\n  let resetScrollPos = $.noop;\n\n  const cancelOverlays = function () {\n    $('#dialog_box').hide();\n    if (!editingsource && !docprops && !preferences) {\n      if (curContext) {\n        svgCanvas.leaveContext();\n      }\n      return;\n    }\n\n    if (editingsource) {\n      if (origSource !== $('#svg_source_textarea').val()) {\n        $.confirm(uiStrings.notification.QignoreSourceChanges, function (ok) {\n          if (ok) { hideSourceEditor(); }\n        });\n      } else {\n        hideSourceEditor();\n      }\n    } else if (docprops) {\n      hideDocProperties();\n    } else if (preferences) {\n      hidePreferences();\n    }\n    resetScrollPos();\n  };\n\n  const winWh = {width: $(window).width(), height: $(window).height()};\n\n  // Fix for Issue 781: Drawing area jumps to top-left corner on window resize (IE9)\n  if (isIE()) {\n    resetScrollPos = function () {\n      if (workarea[0].scrollLeft === 0 && workarea[0].scrollTop === 0) {\n        workarea[0].scrollLeft = curScrollPos.left;\n        workarea[0].scrollTop = curScrollPos.top;\n      }\n    };\n\n    curScrollPos = {\n      left: workarea[0].scrollLeft,\n      top: workarea[0].scrollTop\n    };\n\n    $(window).resize(resetScrollPos);\n    editor.ready(function () {\n      // TODO: Find better way to detect when to do this to minimize\n      // flickering effect\n      setTimeout(function () {\n        resetScrollPos();\n      }, 500);\n    });\n\n    workarea.scroll(function () {\n      curScrollPos = {\n        left: workarea[0].scrollLeft,\n        top: workarea[0].scrollTop\n      };\n    });\n  }\n\n  $(window).resize(function (evt) {\n    $.each(winWh, function (type, val) {\n      const curval = $(window)[type]();\n      workarea[0]['scroll' + (type === 'width' ? 'Left' : 'Top')] -= (curval - val) / 2;\n      winWh[type] = curval;\n    });\n    setFlyoutPositions();\n  });\n\n  workarea.scroll(function () {\n    // TODO: jQuery's scrollLeft/Top() wouldn't require a null check\n    if ($('#ruler_x').length) {\n      $('#ruler_x')[0].scrollLeft = workarea[0].scrollLeft;\n    }\n    if ($('#ruler_y').length) {\n      $('#ruler_y')[0].scrollTop = workarea[0].scrollTop;\n    }\n  });\n\n  $('#url_notice').click(function () {\n    $.alert(this.title);\n  });\n\n  $('#change_image_url').click(promptImgURL);\n\n  // added these event handlers for all the push buttons so they\n  // behave more like buttons being pressed-in and not images\n  (function () {\n    const toolnames = ['clear', 'open', 'save', 'source', 'delete', 'delete_multi', 'paste', 'clone', 'clone_multi', 'move_top', 'move_bottom'];\n    const curClass = 'tool_button_current';\n\n    let allTools = '';\n\n    $.each(toolnames, function (i, item) {\n      allTools += (i ? ',' : '') + '#tool_' + item;\n    });\n\n    $(allTools).mousedown(function () {\n      $(this).addClass(curClass);\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n\n    $('#tool_undo, #tool_redo').mousedown(function () {\n      if (!$(this).hasClass('disabled')) { $(this).addClass(curClass); }\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n  }());\n\n  // switch modifier key in tooltips if mac\n  // NOTE: This code is not used yet until I can figure out how to successfully bind ctrl/meta\n  // in Opera and Chrome\n  if (isMac() && !window.opera) {\n    const shortcutButtons = [\n      'tool_clear', 'tool_save', 'tool_source',\n      'tool_undo', 'tool_redo', 'tool_clone'\n    ];\n    let i = shortcutButtons.length;\n    while (i--) {\n      const button = document.getElementById(shortcutButtons[i]);\n      if (button) {\n        const {title} = button;\n        const index = title.indexOf('Ctrl+');\n        button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');\n      }\n    }\n  }\n\n  // TODO: go back to the color boxes having white background-color and then setting\n  //  background-image to none.png (otherwise partially transparent gradients look weird)\n  const colorPicker = function (elem) {\n    const picker = elem.attr('id') === 'stroke_color' ? 'stroke' : 'fill';\n    // const opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));\n    const title = picker === 'stroke'\n      ? uiStrings.ui.pick_stroke_paint_opacity\n      : uiStrings.ui.pick_fill_paint_opacity;\n    // let wasNone = false; // Currently unused\n    const pos = elem.offset();\n    let {paint} = paintBox[picker];\n    $('#color_picker')\n      .draggable({\n        cancel: '.jGraduate_tabs, .jGraduate_colPick, .jGraduate_gradPick, .jPicker',\n        containment: 'window'\n      })\n      .css(curConfig.colorPickerCSS || {left: pos.left - 140, bottom: 40})\n      .jGraduate(\n        {\n          paint,\n          window: {pickerTitle: title},\n          images: {clientPath: curConfig.jGraduatePath},\n          newstop: 'inverse'\n        },\n        function (p) {\n          paint = new $.jGraduate.Paint(p);\n          paintBox[picker].setPaint(paint);\n          svgCanvas.setPaint(picker, paint);\n          $('#color_picker').hide();\n        },\n        function () {\n          $('#color_picker').hide();\n        }\n      );\n  };\n\n  const PaintBox = function (container, type) {\n    let paintColor, paintOpacity;\n    const cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke'];\n    // set up gradients to be used for the buttons\n    const svgdocbox = new DOMParser().parseFromString(\n      `<svg xmlns=\"http://www.w3.org/2000/svg\">\n        <rect width=\"16.5\" height=\"16.5\"\n          fill=\"#${cur.color}\" opacity=\"${cur.opacity}\"/>\n        <defs><linearGradient id=\"gradbox_\"/></defs>\n      </svg>`,\n      'text/xml'\n    );\n\n    let docElem = svgdocbox.documentElement;\n    docElem = $(container)[0].appendChild(document.importNode(docElem, true));\n    docElem.setAttribute('width', 16.5);\n\n    this.rect = docElem.firstElementChild;\n    this.defs = docElem.getElementsByTagName('defs')[0];\n    this.grad = this.defs.firstElementChild;\n    this.paint = new $.jGraduate.Paint({solidColor: cur.color});\n    this.type = type;\n\n    this.setPaint = function (paint, apply) {\n      this.paint = paint;\n\n      const ptype = paint.type;\n      const opac = paint.alpha / 100;\n\n      let fillAttr = 'none';\n      switch (ptype) {\n      case 'solidColor':\n        fillAttr = (paint[ptype] !== 'none') ? '#' + paint[ptype] : paint[ptype];\n        break;\n      case 'linearGradient':\n      case 'radialGradient':\n        this.grad.remove();\n        this.grad = this.defs.appendChild(paint[ptype]);\n        const id = this.grad.id = 'gradbox_' + this.type;\n        fillAttr = 'url(#' + id + ')';\n        break;\n      }\n\n      this.rect.setAttribute('fill', fillAttr);\n      this.rect.setAttribute('opacity', opac);\n\n      if (apply) {\n        svgCanvas.setColor(this.type, paintColor, true);\n        svgCanvas.setPaintOpacity(this.type, paintOpacity, true);\n      }\n    };\n\n    this.update = function (apply) {\n      if (!selectedElement) { return; }\n\n      const {type} = this;\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        // These elements don't have fill or stroke, so don't change\n        // the current value\n        return;\n      case 'g':\n      case 'a': {\n        const childs = selectedElement.getElementsByTagName('*');\n\n        let gPaint = null;\n        for (let i = 0, len = childs.length; i < len; i++) {\n          const elem = childs[i];\n          const p = elem.getAttribute(type);\n          if (i === 0) {\n            gPaint = p;\n          } else if (gPaint !== p) {\n            gPaint = null;\n            break;\n          }\n        }\n\n        if (gPaint === null) {\n          // No common color, don't update anything\n          paintColor = null;\n          return;\n        }\n        paintColor = gPaint;\n        paintOpacity = 1;\n        break;\n      } default:\n        paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));\n        if (isNaN(paintOpacity)) {\n          paintOpacity = 1.0;\n        }\n\n        const defColor = type === 'fill' ? 'black' : 'none';\n        paintColor = selectedElement.getAttribute(type) || defColor;\n      }\n\n      if (apply) {\n        svgCanvas.setColor(type, paintColor, true);\n        svgCanvas.setPaintOpacity(type, paintOpacity, true);\n      }\n\n      paintOpacity *= 100;\n\n      const paint = getPaint(paintColor, paintOpacity, type);\n      // update the rect inside #fill_color/#stroke_color\n      this.setPaint(paint);\n    };\n\n    this.prep = function () {\n      const ptype = this.paint.type;\n\n      switch (ptype) {\n      case 'linearGradient':\n      case 'radialGradient':\n        const paint = new $.jGraduate.Paint({copy: this.paint});\n        svgCanvas.setPaint(type, paint);\n        break;\n      }\n    };\n  };\n\n  paintBox.fill = new PaintBox('#fill_color', 'fill');\n  paintBox.stroke = new PaintBox('#stroke_color', 'stroke');\n\n  $('#stroke_width').val(curConfig.initStroke.width);\n  $('#group_opacity').val(curConfig.initOpacity * 100);\n\n  // Use this SVG elem to test vectorEffect support\n  const testEl = paintBox.fill.rect.cloneNode(false);\n  testEl.setAttribute('style', 'vector-effect:non-scaling-stroke');\n  const supportsNonSS = (testEl.style.vectorEffect === 'non-scaling-stroke');\n  testEl.removeAttribute('style');\n  const svgdocbox = paintBox.fill.rect.ownerDocument;\n  // Use this to test support for blur element. Seems to work to test support in Webkit\n  const blurTest = svgdocbox.createElementNS(NS.SVG, 'feGaussianBlur');\n  if (blurTest.stdDeviationX === undefined) {\n    $('#tool_blur').hide();\n  }\n  $(blurTest).remove();\n\n  // Test for zoom icon support\n  (function () {\n    const pre = '-' + uaPrefix.toLowerCase() + '-zoom-';\n    const zoom = pre + 'in';\n    workarea.css('cursor', zoom);\n    if (workarea.css('cursor') === zoom) {\n      zoomInIcon = zoom;\n      zoomOutIcon = pre + 'out';\n    }\n    workarea.css('cursor', 'auto');\n  }());\n\n  // Test for embedImage support (use timeout to not interfere with page load)\n  setTimeout(function () {\n    svgCanvas.embedImage('images/logo.png', function (datauri) {\n      if (!datauri) {\n        // Disable option\n        $('#image_save_opts [value=embed]').attr('disabled', 'disabled');\n        $('#image_save_opts input').val(['ref']);\n        $.pref('img_save', 'ref');\n        $('#image_opt_embed').css('color', '#666').attr(\n          'title',\n          uiStrings.notification.featNotSupported\n        );\n      }\n    });\n  }, 1000);\n\n  $('#fill_color, #tool_fill .icon_label').click(function () {\n    colorPicker($('#fill_color'));\n    updateToolButtonState();\n  });\n\n  $('#stroke_color, #tool_stroke .icon_label').click(function () {\n    colorPicker($('#stroke_color'));\n    updateToolButtonState();\n  });\n\n  $('#group_opacityLabel').click(function () {\n    $('#opacity_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#zoomLabel').click(function () {\n    $('#zoom_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#tool_move_top').mousedown(function (evt) {\n    $('#tools_stacking').show();\n    evt.preventDefault();\n  });\n\n  $('.layer_button').mousedown(function () {\n    $(this).addClass('layer_buttonpressed');\n  }).mouseout(function () {\n    $(this).removeClass('layer_buttonpressed');\n  }).mouseup(function () {\n    $(this).removeClass('layer_buttonpressed');\n  });\n\n  $('.push_button').mousedown(function () {\n    if (!$(this).hasClass('disabled')) {\n      $(this).addClass('push_button_pressed').removeClass('push_button');\n    }\n  }).mouseout(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  }).mouseup(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  });\n\n  // ask for a layer name\n  $('#layer_new').click(function () {\n    let uniqName,\n      i = svgCanvas.getCurrentDrawing().getNumLayers();\n    do {\n      uniqName = uiStrings.layers.layer + ' ' + (++i);\n    } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));\n\n    $.prompt(uiStrings.notification.enterUniqueLayerName, uniqName, function (newName) {\n      if (!newName) { return; }\n      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n        $.alert(uiStrings.notification.dupeLayerName);\n        return;\n      }\n      svgCanvas.createLayer(newName);\n      updateContextPanel();\n      populateLayers();\n    });\n  });\n\n  function deleteLayer () {\n    if (svgCanvas.deleteCurrentLayer()) {\n      updateContextPanel();\n      populateLayers();\n      // This matches what SvgCanvas does\n      // TODO: make this behavior less brittle (svg-editor should get which\n      // layer is selected from the canvas and then select that one in the UI)\n      $('#layerlist tr.layer').removeClass('layersel');\n      $('#layerlist tr.layer:first').addClass('layersel');\n    }\n  }\n\n  function cloneLayer () {\n    const name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';\n\n    $.prompt(uiStrings.notification.enterUniqueLayerName, name, function (newName) {\n      if (!newName) { return; }\n      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n        $.alert(uiStrings.notification.dupeLayerName);\n        return;\n      }\n      svgCanvas.cloneLayer(newName);\n      updateContextPanel();\n      populateLayers();\n    });\n  }\n\n  function mergeLayer () {\n    if ($('#layerlist tr.layersel').index() === svgCanvas.getCurrentDrawing().getNumLayers() - 1) {\n      return;\n    }\n    svgCanvas.mergeLayer();\n    updateContextPanel();\n    populateLayers();\n  }\n\n  function moveLayer (pos) {\n    const total = svgCanvas.getCurrentDrawing().getNumLayers();\n\n    let curIndex = $('#layerlist tr.layersel').index();\n    if (curIndex > 0 || curIndex < total - 1) {\n      curIndex += pos;\n      svgCanvas.setCurrentLayerPosition(total - curIndex - 1);\n      populateLayers();\n    }\n  }\n\n  $('#layer_delete').click(deleteLayer);\n\n  $('#layer_up').click(() => {\n    moveLayer(-1);\n  });\n\n  $('#layer_down').click(() => {\n    moveLayer(1);\n  });\n\n  $('#layer_rename').click(function () {\n    // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused\n    const oldName = $('#layerlist tr.layersel td.layername').text();\n    $.prompt(uiStrings.notification.enterNewLayerName, '', function (newName) {\n      if (!newName) { return; }\n      if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n        $.alert(uiStrings.notification.layerHasThatName);\n        return;\n      }\n\n      svgCanvas.renameCurrentLayer(newName);\n      populateLayers();\n    });\n  });\n\n  const SIDEPANEL_MAXWIDTH = 300;\n  const SIDEPANEL_OPENWIDTH = 150;\n  let sidedrag = -1, sidedragging = false, allowmove = false;\n\n  /**\n   * @param {Float} delta\n   * @fires module:svgcanvas.SvgCanvas#event:ext-workareaResized\n   * @returns {undefined}\n   */\n  const changeSidePanelWidth = function (delta) {\n    const rulerX = $('#ruler_x');\n    $('#sidepanels').width('+=' + delta);\n    $('#layerpanel').width('+=' + delta);\n    rulerX.css('right', parseInt(rulerX.css('right'), 10) + delta);\n    workarea.css('right', parseInt(workarea.css('right'), 10) + delta);\n    svgCanvas.runExtensions('workareaResized');\n  };\n\n  const resizeSidePanel = function (evt) {\n    if (!allowmove) { return; }\n    if (sidedrag === -1) { return; }\n    sidedragging = true;\n    let deltaX = sidedrag - evt.pageX;\n    const sideWidth = $('#sidepanels').width();\n    if (sideWidth + deltaX > SIDEPANEL_MAXWIDTH) {\n      deltaX = SIDEPANEL_MAXWIDTH - sideWidth;\n      // sideWidth = SIDEPANEL_MAXWIDTH;\n    } else if (sideWidth + deltaX < 2) {\n      deltaX = 2 - sideWidth;\n      // sideWidth = 2;\n    }\n    if (deltaX === 0) { return; }\n    sidedrag -= deltaX;\n    changeSidePanelWidth(deltaX);\n  };\n\n  /**\n   * If width is non-zero, then fully close it; otherwise fully open it.\n   * @param {boolean} close Forces the side panel closed\n   * @returns {undefined}\n   */\n  const toggleSidePanel = function (close) {\n    const w = $('#sidepanels').width();\n    const deltaX = (w > 2 || close ? 2 : SIDEPANEL_OPENWIDTH) - w;\n    changeSidePanelWidth(deltaX);\n  };\n\n  $('#sidepanel_handle')\n    .mousedown(function (evt) {\n      sidedrag = evt.pageX;\n      $(window).mousemove(resizeSidePanel);\n      allowmove = false;\n      // Silly hack for Chrome, which always runs mousemove right after mousedown\n      setTimeout(function () {\n        allowmove = true;\n      }, 20);\n    })\n    .mouseup(function (evt) {\n      if (!sidedragging) { toggleSidePanel(); }\n      sidedrag = -1;\n      sidedragging = false;\n    });\n\n  $(window).mouseup(function () {\n    sidedrag = -1;\n    sidedragging = false;\n    $('#svg_editor').unbind('mousemove', resizeSidePanel);\n  });\n\n  populateLayers();\n\n  // function changeResolution (x,y) {\n  //   const {zoom} = svgCanvas.getResolution();\n  //   setResolution(x * zoom, y * zoom);\n  // }\n\n  const centerCanvas = () => {\n    // this centers the canvas vertically in the workarea (horizontal handled in CSS)\n    workarea.css('line-height', workarea.height() + 'px');\n  };\n\n  $(window).bind('load resize', centerCanvas);\n\n  function stepFontSize (elem, step) {\n    const origVal = Number(elem.value);\n    const sugVal = origVal + step;\n    const increasing = sugVal >= origVal;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 24) {\n      if (increasing) {\n        return Math.round(origVal * 1.1);\n      }\n      return Math.round(origVal / 1.1);\n    }\n    if (origVal <= 1) {\n      if (increasing) {\n        return origVal * 2;\n      }\n      return origVal / 2;\n    }\n    return sugVal;\n  }\n\n  function stepZoom (elem, step) {\n    const origVal = Number(elem.value);\n    if (origVal === 0) { return 100; }\n    const sugVal = origVal + step;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 100) {\n      return sugVal;\n    }\n    if (sugVal >= origVal) {\n      return origVal * 2;\n    }\n    return origVal / 2;\n  }\n\n  // function setResolution (w, h, center) {\n  //   updateCanvas();\n  //   // w -= 0; h -= 0;\n  //   // $('#svgcanvas').css({width: w, height: h});\n  //   // $('#canvas_width').val(w);\n  //   // $('#canvas_height').val(h);\n  //   //\n  //   // if (center) {\n  //   //   const wArea = workarea;\n  //   //   const scrollY = h/2 - wArea.height()/2;\n  //   //   const scrollX = w/2 - wArea.width()/2;\n  //   //   wArea[0].scrollTop = scrollY;\n  //   //   wArea[0].scrollLeft = scrollX;\n  //   // }\n  // }\n\n  $('#resolution').change(function () {\n    const wh = $('#canvas_width,#canvas_height');\n    if (!this.selectedIndex) {\n      if ($('#canvas_width').val() === 'fit') {\n        wh.removeAttr('disabled').val(100);\n      }\n    } else if (this.value === 'content') {\n      wh.val('fit').attr('disabled', 'disabled');\n    } else {\n      const dims = this.value.split('x');\n      $('#canvas_width').val(dims[0]);\n      $('#canvas_height').val(dims[1]);\n      wh.removeAttr('disabled');\n    }\n  });\n\n  // Prevent browser from erroneously repopulating fields\n  $('input,select').attr('autocomplete', 'off');\n\n  const dialogSelectors = [\n    '#tool_source_cancel', '#tool_docprops_cancel',\n    '#tool_prefs_cancel', '.overlay'\n  ];\n  /**\n   * Associate all button actions as well as non-button keyboard shortcuts\n   * @namespace {PlainObject} module:SVGEditor~Actions\n   */\n  const Actions = (function () {\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ToolButton\n    * @property {string} sel The CSS selector for the tool\n    * @property {external:jQuery.Function} fn A handler to be attached to the `evt`\n    * @property {string} evt The event for which the `fn` listener will be added\n    * @property {module:SVGEditor.Key} [key] [key, preventDefault, NoDisableInInput]\n    * @property {string} [parent] Selector\n    * @property {boolean} [hidekey] Whether to show key value in title\n    * @property {string} [icon] The button ID\n    * @property {boolean} isDefault For flyout holders\n    */\n    /**\n     *\n     * @name module:SVGEditor~ToolButtons\n     * @type {module:SVGEditor.ToolButton[]}\n     */\n    const toolButtons = [\n      {sel: '#tool_select', fn: clickSelect, evt: 'click', key: ['V', true]},\n      {sel: '#tool_fhpath', fn: clickFHPath, evt: 'click', key: ['Q', true]},\n      {sel: '#tool_line', fn: clickLine, evt: 'click', key: ['L', true],\n        parent: '#tools_line', prepend: true},\n      {sel: '#tool_rect', fn: clickRect, evt: 'mouseup',\n        key: ['R', true], parent: '#tools_rect', icon: 'rect'},\n      {sel: '#tool_square', fn: clickSquare, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'square'},\n      {sel: '#tool_fhrect', fn: clickFHRect, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'fh_rect'},\n      {sel: '#tool_ellipse', fn: clickEllipse, evt: 'mouseup',\n        key: ['E', true], parent: '#tools_ellipse', icon: 'ellipse'},\n      {sel: '#tool_circle', fn: clickCircle, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'circle'},\n      {sel: '#tool_fhellipse', fn: clickFHEllipse, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'fh_ellipse'},\n      {sel: '#tool_path', fn: clickPath, evt: 'click', key: ['P', true]},\n      {sel: '#tool_text', fn: clickText, evt: 'click', key: ['T', true]},\n      {sel: '#tool_image', fn: clickImage, evt: 'mouseup'},\n      {sel: '#tool_zoom', fn: clickZoom, evt: 'mouseup', key: ['Z', true]},\n      {sel: '#tool_clear', fn: clickClear, evt: 'mouseup', key: ['N', true]},\n      {sel: '#tool_save', fn () {\n        if (editingsource) {\n          saveSourceEditor();\n        } else {\n          clickSave();\n        }\n      }, evt: 'mouseup', key: ['S', true]},\n      {sel: '#tool_export', fn: clickExport, evt: 'mouseup'},\n      {sel: '#tool_open', fn: clickOpen, evt: 'mouseup', key: ['O', true]},\n      {sel: '#tool_import', fn: clickImport, evt: 'mouseup'},\n      {sel: '#tool_source', fn: showSourceEditor, evt: 'click', key: ['U', true]},\n      {sel: '#tool_wireframe', fn: clickWireframe, evt: 'click', key: ['F', true]},\n      {\n        key: ['esc', false, false],\n        fn () {\n          if (dialogSelectors.every((sel) => {\n            return $(sel + ':hidden').length;\n          })) {\n            svgCanvas.clearSelection();\n          }\n        },\n        hidekey: true\n      },\n      {sel: dialogSelectors.join(','), fn: cancelOverlays, evt: 'click',\n        key: ['esc', false, false], hidekey: true},\n      {sel: '#tool_source_save', fn: saveSourceEditor, evt: 'click'},\n      {sel: '#tool_docprops_save', fn: saveDocProperties, evt: 'click'},\n      {sel: '#tool_docprops', fn: showDocProperties, evt: 'mouseup'},\n      {sel: '#tool_prefs_save', fn: savePreferences, evt: 'click'},\n      {sel: '#tool_prefs_option', fn () { showPreferences(); return false; }, evt: 'mouseup'},\n      {sel: '#tool_delete,#tool_delete_multi', fn: deleteSelected,\n        evt: 'click', key: ['del/backspace', true]},\n      {sel: '#tool_reorient', fn: reorientPath, evt: 'click'},\n      {sel: '#tool_node_link', fn: linkControlPoints, evt: 'click'},\n      {sel: '#tool_node_clone', fn: clonePathNode, evt: 'click'},\n      {sel: '#tool_node_delete', fn: deletePathNode, evt: 'click'},\n      {sel: '#tool_openclose_path', fn: opencloseSubPath, evt: 'click'},\n      {sel: '#tool_add_subpath', fn: addSubPath, evt: 'click'},\n      {sel: '#tool_move_top', fn: moveToTopSelected, evt: 'click', key: 'ctrl+shift+]'},\n      {sel: '#tool_move_bottom', fn: moveToBottomSelected, evt: 'click', key: 'ctrl+shift+['},\n      {sel: '#tool_topath', fn: convertToPath, evt: 'click'},\n      {sel: '#tool_make_link,#tool_make_link_multi', fn: makeHyperlink, evt: 'click'},\n      {sel: '#tool_undo', fn: clickUndo, evt: 'click'},\n      {sel: '#tool_redo', fn: clickRedo, evt: 'click'},\n      {sel: '#tool_clone,#tool_clone_multi', fn: clickClone, evt: 'click', key: ['D', true]},\n      {sel: '#tool_group_elements', fn: clickGroup, evt: 'click', key: ['G', true]},\n      {sel: '#tool_ungroup', fn: clickGroup, evt: 'click'},\n      {sel: '#tool_unlink_use', fn: clickGroup, evt: 'click'},\n      {sel: '[id^=tool_align]', fn: clickAlign, evt: 'click'},\n      // these two lines are required to make Opera work properly with the flyout mechanism\n      // {sel: '#tools_rect_show', fn: clickRect, evt: 'click'},\n      // {sel: '#tools_ellipse_show', fn: clickEllipse, evt: 'click'},\n      {sel: '#tool_bold', fn: clickBold, evt: 'mousedown'},\n      {sel: '#tool_italic', fn: clickItalic, evt: 'mousedown'},\n      {sel: '#sidepanel_handle', fn: toggleSidePanel, key: ['X']},\n      {sel: '#copy_save_done', fn: cancelOverlays, evt: 'click'},\n\n      // Shortcuts not associated with buttons\n\n      {key: 'ctrl+left', fn () { rotateSelected(0, 1); }},\n      {key: 'ctrl+right', fn () { rotateSelected(1, 1); }},\n      {key: 'ctrl+shift+left', fn () { rotateSelected(0, 5); }},\n      {key: 'ctrl+shift+right', fn () { rotateSelected(1, 5); }},\n      {key: 'shift+O', fn: selectPrev},\n      {key: 'shift+P', fn: selectNext},\n      {key: [modKey + 'up', true], fn () { zoomImage(2); }},\n      {key: [modKey + 'down', true], fn () { zoomImage(0.5); }},\n      {key: [modKey + ']', true], fn () { moveUpDownSelected('Up'); }},\n      {key: [modKey + '[', true], fn () { moveUpDownSelected('Down'); }},\n      {key: ['up', true], fn () { moveSelected(0, -1); }},\n      {key: ['down', true], fn () { moveSelected(0, 1); }},\n      {key: ['left', true], fn () { moveSelected(-1, 0); }},\n      {key: ['right', true], fn () { moveSelected(1, 0); }},\n      {key: 'shift+up', fn () { moveSelected(0, -10); }},\n      {key: 'shift+down', fn () { moveSelected(0, 10); }},\n      {key: 'shift+left', fn () { moveSelected(-10, 0); }},\n      {key: 'shift+right', fn () { moveSelected(10, 0); }},\n      {key: ['alt+up', true], fn () { svgCanvas.cloneSelectedElements(0, -1); }},\n      {key: ['alt+down', true], fn () { svgCanvas.cloneSelectedElements(0, 1); }},\n      {key: ['alt+left', true], fn () { svgCanvas.cloneSelectedElements(-1, 0); }},\n      {key: ['alt+right', true], fn () { svgCanvas.cloneSelectedElements(1, 0); }},\n      {key: ['alt+shift+up', true], fn () { svgCanvas.cloneSelectedElements(0, -10); }},\n      {key: ['alt+shift+down', true], fn () { svgCanvas.cloneSelectedElements(0, 10); }},\n      {key: ['alt+shift+left', true], fn () { svgCanvas.cloneSelectedElements(-10, 0); }},\n      {key: ['alt+shift+right', true], fn () { svgCanvas.cloneSelectedElements(10, 0); }},\n      {key: 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n      {key: modKey + 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n\n      // Standard shortcuts\n      {key: modKey + 'z', fn: clickUndo},\n      {key: modKey + 'shift+z', fn: clickRedo},\n      {key: modKey + 'y', fn: clickRedo},\n\n      {key: modKey + 'x', fn: cutSelected},\n      {key: modKey + 'c', fn: copySelected},\n      {key: modKey + 'v', fn: pasteInCenter}\n    ];\n\n    // Tooltips not directly associated with a single function\n    const keyAssocs = {\n      '4/Shift+4': '#tools_rect_show',\n      '5/Shift+5': '#tools_ellipse_show'\n    };\n\n    return { /** @lends module:SVGEditor~Actions */\n      /**\n       * @returns {undefined}\n       */\n      setAll () {\n        const flyouts = {};\n\n        $.each(toolButtons, function (i, opts) {\n          // Bind function to button\n          let btn;\n          if (opts.sel) {\n            btn = $(opts.sel);\n            if (!btn.length) { return true; } // Skip if markup does not exist\n            if (opts.evt) {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map tool button click events as well\n              if (isTouch() && opts.evt === 'click') {\n                opts.evt = 'mousedown';\n              }\n              btn[opts.evt](opts.fn);\n            }\n\n            // Add to parent flyout menu, if able to be displayed\n            if (opts.parent && $(opts.parent + '_show').length) {\n              let fH = $(opts.parent);\n              if (!fH.length) {\n                fH = makeFlyoutHolder(opts.parent.substr(1));\n              }\n              if (opts.prepend) {\n                btn[0].style.margin = 'initial';\n              }\n              fH[opts.prepend ? 'prepend' : 'append'](btn);\n\n              if (!Array.isArray(flyouts[opts.parent])) {\n                flyouts[opts.parent] = [];\n              }\n              flyouts[opts.parent].push(opts);\n            }\n          }\n\n          // Bind function to shortcut key\n          if (opts.key) {\n            // Set shortcut based on options\n            let keyval,\n              // disInInp = true,\n              pd = false;\n            if (Array.isArray(opts.key)) {\n              keyval = opts.key[0];\n              if (opts.key.length > 1) { pd = opts.key[1]; }\n              // if (opts.key.length > 2) { disInInp = opts.key[2]; }\n            } else {\n              keyval = opts.key;\n            }\n            keyval += '';\n\n            const {fn} = opts;\n            $.each(keyval.split('/'), function (i, key) {\n              $(document).bind('keydown', key, function (e) {\n                fn();\n                if (pd) {\n                  e.preventDefault();\n                }\n                // Prevent default on ALL keys?\n                return false;\n              });\n            });\n\n            // Put shortcut in title\n            if (opts.sel && !opts.hidekey && btn.attr('title')) {\n              const newTitle = btn.attr('title').split('[')[0] + ' (' + keyval + ')';\n              keyAssocs[keyval] = opts.sel;\n              // Disregard for menu items\n              if (!btn.parents('#main_menu').length) {\n                btn.attr('title', newTitle);\n              }\n            }\n          }\n        });\n\n        // Setup flyouts\n        setupFlyouts(flyouts);\n\n        // Misc additional actions\n\n        // Make 'return' keypress trigger the change event\n        $('.attr_changer, #image_url').bind('keydown', 'return',\n          function (evt) {\n            $(this).change();\n            evt.preventDefault();\n          }\n        );\n\n        $(window).bind('keydown', 'tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectNext();\n          }\n        }).bind('keydown', 'shift+tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectPrev();\n          }\n        });\n\n        $('#tool_zoom').dblclick(dblclickZoom);\n      },\n      /**\n       * @returns {undefined}\n       */\n      setTitles () {\n        $.each(keyAssocs, function (keyval, sel) {\n          const menu = ($(sel).parents('#main_menu').length);\n\n          $(sel).each(function () {\n            let t;\n            if (menu) {\n              t = $(this).text().split(' [')[0];\n            } else {\n              t = this.title.split(' [')[0];\n            }\n            let keyStr = '';\n            // Shift+Up\n            $.each(keyval.split('/'), function (i, key) {\n              const modBits = key.split('+');\n              let mod = '';\n              if (modBits.length > 1) {\n                mod = modBits[0] + '+';\n                key = modBits[1];\n              }\n              keyStr += (i ? '/' : '') + mod + (uiStrings['key_' + key] || key);\n            });\n            if (menu) {\n              this.lastChild.textContent = t + ' [' + keyStr + ']';\n            } else {\n              this.title = t + ' [' + keyStr + ']';\n            }\n          });\n        });\n      },\n      /**\n       * @param {string} sel Selector to match\n       * @returns {module:SVGEditor.ToolButton}\n       */\n      getButtonData (sel) {\n        return Object.values(toolButtons).find((btn) => {\n          return btn.sel === sel;\n        });\n      }\n    };\n  }());\n\n  // Select given tool\n  editor.ready(function () {\n    let tool;\n    const itool = curConfig.initTool,\n      container = $('#tools_left, #svg_editor .tools_flyout'),\n      preTool = container.find('#tool_' + itool),\n      regTool = container.find('#' + itool);\n    if (preTool.length) {\n      tool = preTool;\n    } else if (regTool.length) {\n      tool = regTool;\n    } else {\n      tool = $('#tool_select');\n    }\n    tool.click().mouseup();\n\n    if (curConfig.wireframe) {\n      $('#tool_wireframe').click();\n    }\n\n    if (curConfig.showlayers) {\n      toggleSidePanel();\n    }\n\n    $('#rulers').toggle(!!curConfig.showRulers);\n\n    if (curConfig.showRulers) {\n      $('#show_rulers')[0].checked = true;\n    }\n\n    if (curConfig.baseUnit) {\n      $('#base_unit').val(curConfig.baseUnit);\n    }\n\n    if (curConfig.gridSnapping) {\n      $('#grid_snapping_on')[0].checked = true;\n    }\n\n    if (curConfig.snappingStep) {\n      $('#grid_snapping_step').val(curConfig.snappingStep);\n    }\n\n    if (curConfig.gridColor) {\n      $('#grid_color').val(curConfig.gridColor);\n    }\n  });\n\n  // init SpinButtons\n  $('#rect_rx').SpinButton({\n    min: 0, max: 1000, stateObj, callback: changeRectRadius\n  });\n  $('#stroke_width').SpinButton({\n    min: 0, max: 99, smallStep: 0.1, stateObj, callback: changeStrokeWidth\n  });\n  $('#angle').SpinButton({\n    min: -180, max: 180, step: 5, stateObj, callback: changeRotationAngle\n  });\n  $('#font_size').SpinButton({\n    min: 0.001, stepfunc: stepFontSize, stateObj, callback: changeFontSize\n  });\n  $('#group_opacity').SpinButton({\n    min: 0, max: 100, step: 5, stateObj, callback: changeOpacity\n  });\n  $('#blur').SpinButton({\n    min: 0, max: 10, step: 0.1, stateObj, callback: changeBlur\n  });\n  $('#zoom').SpinButton({\n    min: 0.001, max: 10000, step: 50, stepfunc: stepZoom,\n    stateObj, callback: changeZoom\n  // Set default zoom\n  }).val(\n    svgCanvas.getZoom() * 100\n  );\n\n  $('#workarea').contextMenu(\n    {\n      menu: 'cmenu_canvas',\n      inSpeed: 0\n    },\n    function (action, el, pos) {\n      switch (action) {\n      case 'delete':\n        deleteSelected();\n        break;\n      case 'cut':\n        cutSelected();\n        break;\n      case 'copy':\n        copySelected();\n        break;\n      case 'paste':\n        svgCanvas.pasteElements();\n        break;\n      case 'paste_in_place':\n        svgCanvas.pasteElements('in_place');\n        break;\n      case 'group':\n      case 'group_elements':\n        svgCanvas.groupSelectedElements();\n        break;\n      case 'ungroup':\n        svgCanvas.ungroupSelectedElement();\n        break;\n      case 'move_front':\n        moveToTopSelected();\n        break;\n      case 'move_up':\n        moveUpDownSelected('Up');\n        break;\n      case 'move_down':\n        moveUpDownSelected('Down');\n        break;\n      case 'move_back':\n        moveToBottomSelected();\n        break;\n      default:\n        if (hasCustomHandler(action)) {\n          getCustomHandler(action).call();\n        }\n        break;\n      }\n    }\n  );\n\n  const lmenuFunc = function (action, el, pos) {\n    switch (action) {\n    case 'dupe':\n      cloneLayer();\n      break;\n    case 'delete':\n      deleteLayer();\n      break;\n    case 'merge_down':\n      mergeLayer();\n      break;\n    case 'merge_all':\n      svgCanvas.mergeAllLayers();\n      updateContextPanel();\n      populateLayers();\n      break;\n    }\n  };\n\n  $('#layerlist').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0\n    },\n    lmenuFunc\n  );\n\n  $('#layer_moreopts').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0,\n      allowLeft: true\n    },\n    lmenuFunc\n  );\n\n  $('.contextMenu li').mousedown(function (ev) {\n    ev.preventDefault();\n  });\n\n  $('#cmenu_canvas li').disableContextMenu();\n  canvMenu.enableContextMenuItems('#delete,#cut,#copy');\n\n  function enableOrDisableClipboard () {\n    let svgeditClipboard;\n    try {\n      svgeditClipboard = localStorage.getItem('svgedit_clipboard');\n    } catch (err) {}\n    canvMenu[(svgeditClipboard ? 'en' : 'dis') + 'ableContextMenuItems'](\n      '#paste,#paste_in_place'\n    );\n  }\n  enableOrDisableClipboard();\n\n  window.addEventListener('storage', function (e) {\n    if (e.key !== 'svgedit_clipboard') { return; }\n\n    enableOrDisableClipboard();\n  });\n\n  window.addEventListener('beforeunload', function (e) {\n    // Suppress warning if page is empty\n    if (undoMgr.getUndoStackSize() === 0) {\n      editor.showSaveWarning = false;\n    }\n\n    // showSaveWarning is set to 'false' when the page is saved.\n    if (!curConfig.no_save_warning && editor.showSaveWarning) {\n      // Browser already asks question about closing the page\n      e.returnValue = uiStrings.notification.unsavedChanges; // Firefox needs this when beforeunload set by addEventListener (even though message is not used)\n      return uiStrings.notification.unsavedChanges;\n    }\n  });\n\n  /**\n  * Expose the `uiStrings`.\n  * @function module:SVGEditor.canvas.getUIStrings\n  * @returns {module:SVGEditor.uiStrings}\n  */\n  editor.canvas.getUIStrings = function () {\n    return uiStrings;\n  };\n\n  /**\n  * @callback module:SVGEditor.OpenPrepCallback\n  * @param {boolean} noChanges\n  * @returns {undefined}\n  */\n  /**\n  * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback\n  * @returns {undefined}\n  */\n  editor.openPrep = function (func) {\n    $('#main_menu').hide();\n    if (undoMgr.getUndoStackSize() === 0) {\n      func(true);\n    } else {\n      $.confirm(uiStrings.notification.QwantToOpen, func);\n    }\n  };\n\n  function onDragEnter (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // and indicator should be displayed here, such as \"drop files here\"\n  }\n\n  function onDragOver (e) {\n    e.stopPropagation();\n    e.preventDefault();\n  }\n\n  function onDragLeave (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // hypothetical indicator should be removed here\n  }\n  // Use HTML5 File API: http://www.w3.org/TR/FileAPI/\n  // if browser has HTML5 File API support, then we will show the open menu item\n  // and provide a file input to click. When that change event fires, it will\n  // get the text contents of the file and send it to the canvas\n  if (window.FileReader) {\n    const importImage = function (e) {\n      $.process_cancel(uiStrings.notification.loadingImage);\n      e.stopPropagation();\n      e.preventDefault();\n      $('#workarea').removeAttr('style');\n      $('#main_menu').hide();\n      const file = (e.type === 'drop') ? e.dataTransfer.files[0] : this.files[0];\n      if (!file) {\n        $('#dialog_box').hide();\n        return;\n      }\n      /* if (file.type === 'application/pdf') { // Todo: Handle PDF imports\n\n      }\n      else */\n      if (file.type.includes('image')) {\n        // Detected an image\n        // svg handling\n        let reader;\n        if (file.type.includes('svg')) {\n          reader = new FileReader();\n          reader.onloadend = function (e) {\n            const newElement = svgCanvas.importSvgString(e.target.result, true);\n            svgCanvas.ungroupSelectedElement();\n            svgCanvas.ungroupSelectedElement();\n            svgCanvas.groupSelectedElements();\n            svgCanvas.alignSelectedElements('m', 'page');\n            svgCanvas.alignSelectedElements('c', 'page');\n            // highlight imported element, otherwise we get strange empty selectbox\n            svgCanvas.selectOnly([newElement]);\n            $('#dialog_box').hide();\n          };\n          reader.readAsText(file);\n        } else {\n          // bitmap handling\n          reader = new FileReader();\n          reader.onloadend = function ({target: {result}}) {\n            // let's insert the new image until we know its dimensions\n            const insertNewImage = function (width, height) {\n              const newImage = svgCanvas.addSVGElementFromJson({\n                element: 'image',\n                attr: {\n                  x: 0,\n                  y: 0,\n                  width,\n                  height,\n                  id: svgCanvas.getNextId(),\n                  style: 'pointer-events:inherit'\n                }\n              });\n              svgCanvas.setHref(newImage, result);\n              svgCanvas.selectOnly([newImage]);\n              svgCanvas.alignSelectedElements('m', 'page');\n              svgCanvas.alignSelectedElements('c', 'page');\n              updateContextPanel();\n              $('#dialog_box').hide();\n            };\n            // create dummy img so we know the default dimensions\n            let imgWidth = 100;\n            let imgHeight = 100;\n            const img = new Image();\n            img.style.opacity = 0;\n            img.onload = function () {\n              imgWidth = img.offsetWidth || img.naturalWidth || img.width;\n              imgHeight = img.offsetHeight || img.naturalHeight || img.height;\n              insertNewImage(imgWidth, imgHeight);\n            };\n            img.src = result;\n          };\n          reader.readAsDataURL(file);\n        }\n      }\n    };\n\n    workarea[0].addEventListener('dragenter', onDragEnter);\n    workarea[0].addEventListener('dragover', onDragOver);\n    workarea[0].addEventListener('dragleave', onDragLeave);\n    workarea[0].addEventListener('drop', importImage);\n\n    const open = $('<input type=\"file\">').click(function () {\n      const f = this;\n      editor.openPrep(function (ok) {\n        if (!ok) { return; }\n        svgCanvas.clear();\n        if (f.files.length === 1) {\n          $.process_cancel(uiStrings.notification.loadingImage);\n          const reader = new FileReader();\n          reader.onloadend = function (e) {\n            loadSvgString(e.target.result);\n            updateCanvas();\n          };\n          reader.readAsText(f.files[0]);\n        }\n      });\n    });\n    $('#tool_open').show().prepend(open);\n\n    const imgImport = $('<input type=\"file\">').change(importImage);\n    $('#tool_import').show().prepend(imgImport);\n  }\n\n  updateCanvas(true);\n  //  const revnums = 'svg-editor.js ($Rev$) ';\n  //  revnums += svgCanvas.getVersion();\n  //  $('#copyright')[0].setAttribute('title', revnums);\n\n  const loadedExtensionNames = [];\n  /**\n  * @function module:SVGEditor.setLang\n  * @param {string} lang The language code\n  * @param {module:locale.LocaleStrings} allStrings See {@tutorial LocaleDocs}\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n  * @returns {Promise} A Promise which resolves to `undefined`\n  */\n  const setLang = editor.setLang = async function (lang, allStrings) {\n    editor.langChanged = true;\n    $.pref('lang', lang);\n    $('#lang_select').val(lang);\n    if (!allStrings) {\n      return;\n    }\n    $.extend(uiStrings, allStrings);\n\n    // const notif = allStrings.notification; // Currently unused\n    // $.extend will only replace the given strings\n    const oldLayerName = $('#layerlist tr.layersel td.layername').text();\n    const renameLayer = (oldLayerName === uiStrings.common.layer + ' 1');\n\n    svgCanvas.setUiStrings(allStrings);\n    Actions.setTitles();\n\n    if (renameLayer) {\n      svgCanvas.renameCurrentLayer(uiStrings.common.layer + ' 1');\n      populateLayers();\n    }\n\n    // In case extensions loaded before the locale, now we execute a callback on them\n    if (extsPreLang.length) {\n      while (extsPreLang.length) {\n        const ext = extsPreLang.shift();\n        loadedExtensionNames.push(ext.name);\n        await ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n      }\n    } else {\n      loadedExtensionNames.forEach((loadedExtensionName) => {\n        svgCanvas.runExtensions('langReady', /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */ {\n          lang, uiStrings, importLocale: getImportLocale({defaultLang: lang, defaultName: loadedExtensionName})\n        });\n      });\n    }\n    svgCanvas.runExtensions('langChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */ lang);\n\n    // Update flyout tooltips\n    setFlyoutTitles();\n\n    // Copy title for certain tool elements\n    const elems = {\n      '#stroke_color': '#tool_stroke .icon_label, #tool_stroke .color_block',\n      '#fill_color': '#tool_fill label, #tool_fill .color_block',\n      '#linejoin_miter': '#cur_linejoin',\n      '#linecap_butt': '#cur_linecap'\n    };\n\n    $.each(elems, function (source, dest) {\n      $(dest).attr('title', $(source)[0].title);\n    });\n\n    // Copy alignment titles\n    $('#multiselected_panel div[id^=tool_align]').each(function () {\n      $('#tool_pos' + this.id.substr(10))[0].title = this.title;\n    });\n  };\n  localeInit(\n    /**\n    * @implements {module:locale.LocaleEditorInit}\n    */\n    {\n      /**\n      * Gets an array of results from extensions with a `addLangData` method,\n      * returning an object with a `data` property set to its locales (to be\n      * merged with regular locales).\n      * @param {string} langParam\n      * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n      * @todo Can we forego this in favor of `langReady` (or forego `langReady`)?\n      * @returns {module:locale.AddLangExtensionLocaleData[]}\n      */\n      addLangData (langParam) {\n        return svgCanvas.runExtensions(\n          'addLangData',\n          /**\n           * @function\n           * @type {module:svgcanvas.ExtensionVarBuilder}\n           * @param {string} name\n           * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}\n           */\n          (name) => { // We pass in a function as we don't know the extension name here when defining this `addLangData` method\n            return {\n              lang: langParam,\n              importLocale: getImportLocale({defaultLang: langParam, defaultName: name})\n            };\n          },\n          true\n        );\n      },\n      curConfig\n    }\n  );\n  // Load extensions\n  // Bit of a hack to run extensions in local Opera/IE9\n  if (document.location.protocol === 'file:') {\n    setTimeout(extAndLocaleFunc, 100);\n  } else {\n    // Returns a promise (if we wanted to fire 'extensions-loaded' event, potentially useful to hide interface as some extension locales are only available after this)\n    extAndLocaleFunc();\n  }\n};\n\n/**\n* @callback module:SVGEditor.ReadyCallback\n* @returns {undefined}\n*/\n/**\n* Queues a callback to be invoked when the editor is ready (or\n*   to be invoked immediately if it is already ready--i.e.,\n*   if `svgEditor.runCallbacks` has been run).\n* @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke\n* @returns {undefined}\n*/\neditor.ready = function (cb) {\n  if (!isReady) {\n    callbacks.push(cb);\n  } else {\n    cb();\n  }\n};\n\n/**\n* Invokes the callbacks previous set by `svgEditor.ready`\n* @returns {undefined}\n*/\neditor.runCallbacks = function () {\n  callbacks.forEach((cb) => {\n    cb();\n  });\n  isReady = true;\n};\n\n/**\n* @param {string} str The SVG string to load\n* @returns {undefined}\n*/\neditor.loadFromString = function (str) {\n  editor.ready(function () {\n    loadSvgString(str);\n  });\n};\n\n/**\n* Not presently in use.\n* @param {PlainObject} featList\n* @returns {undefined}\n*/\neditor.disableUI = function (featList) {\n  // $(function () {\n  //   $('#tool_wireframe, #tool_image, #main_button, #tool_source, #sidepanels').remove();\n  //   $('#tools_top').css('left', 5);\n  // });\n};\n\n/**\n * @callback module:SVGEditor.URLLoadCallback\n * @param {boolean} success\n * @returns {undefined}\n */\n/**\n* @param {string} url URL from which to load an SVG string via Ajax\n* @param {PlainObject} [opts] May contain properties: `cache`, `callback`\n* @param {boolean} opts.cache\n* @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success\n* @returns {undefined}\n*/\neditor.loadFromURL = function (url, opts) {\n  if (!opts) { opts = {}; }\n\n  const {cache, callback: cb} = opts;\n\n  editor.ready(function () {\n    $.ajax({\n      url,\n      dataType: 'text',\n      cache: !!cache,\n      beforeSend () {\n        $.process_cancel(uiStrings.notification.loadingImage);\n      },\n      success (str) {\n        loadSvgString(str, cb);\n      },\n      error (xhr, stat, err) {\n        if (xhr.status !== 404 && xhr.responseText) {\n          loadSvgString(xhr.responseText, cb);\n        } else {\n          $.alert(uiStrings.notification.URLloadFail + ': \\n' + err, cb);\n        }\n      },\n      complete () {\n        $('#dialog_box').hide();\n      }\n    });\n  });\n};\n\n/**\n* @param {string} str The Data URI to base64-decode (if relevant) and load\n* @returns {undefined}\n*/\neditor.loadFromDataURI = function (str) {\n  editor.ready(function () {\n    let base64 = false;\n    let pre = str.match(/^data:image\\/svg\\+xml;base64,/);\n    if (pre) {\n      base64 = true;\n    } else {\n      pre = str.match(/^data:image\\/svg\\+xml(?:;(?:utf8)?)?,/);\n    }\n    if (pre) {\n      pre = pre[0];\n    }\n    const src = str.slice(pre.length);\n    loadSvgString(base64 ? Utils.decode64(src) : decodeURIComponent(src));\n  });\n};\n\n/**\n * @param {string} name Used internally; no need for i18n.\n * @param {module:svgcanvas.ExtensionInitCallback} init Config to be invoked on this module\n * @param {module:SVGEditor~ImportLocale} importLocale Importer defaulting to pth with current extension name and locale\n * @throws {Error} If called too early\n * @returns {Promise} Resolves to `undefined`\n*/\neditor.addExtension = function (name, init, importLocale) {\n  // Note that we don't want this on editor.ready since some extensions\n  // may want to run before then (like server_opensave).\n  // $(function () {\n  if (!svgCanvas) {\n    throw new Error('Extension added too early');\n  }\n  return svgCanvas.addExtension.call(this, name, init, importLocale);\n  // });\n};\n\n// Defer injection to wait out initial menu processing. This probably goes\n//    away once all context menu behavior is brought to context menu.\neditor.ready(() => {\n  injectExtendedContextMenuItemsIntoDom();\n});\n\nlet extensionsAdded = false;\nconst messageQueue = [];\n/**\n * @param {Any} data\n * @param {string} origin\n * @fires module:svgcanvas.SvgCanvas#event:message\n * @returns {undefined}\n */\nconst messageListener = ({data, origin}) => {\n  // console.log('data, origin, extensionsAdded', data, origin, extensionsAdded);\n  const messageObj = {data, origin};\n  if (!extensionsAdded) {\n    messageQueue.push(messageObj);\n  } else {\n    // Extensions can handle messages at this stage with their own\n    //  canvas `message` listeners\n    svgCanvas.call('message', messageObj);\n  }\n};\nwindow.addEventListener('message', messageListener);\n\n// Run init once DOM is loaded\n// jQuery(editor.init);\nPromise.resolve().then(() => {\n  // We wait a micro-task to let the svgEditor variable be defined for module checks\n  editor.init();\n});\n\nexport default editor;\n","// Todo: Update: https://github.com/jeresig/jquery.hotkeys\n/*\n * jQuery Hotkeys Plugin\n * Copyright 2010, John Resig\n * Dual licensed under the MIT or GPL Version 2 licenses.\n *\n * http://github.com/jeresig/jquery.hotkeys\n *\n * Based upon the plugin by Tzury Bar Yochay:\n * http://github.com/tzuryby/hotkeys\n *\n * Original idea by:\n * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/\n*/\n\n// We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`\n\nexport default function(b){b.hotkeys={version:\"0.8\",specialKeys:{8:\"backspace\",9:\"tab\",13:\"return\",16:\"shift\",17:\"ctrl\",18:\"alt\",19:\"pause\",20:\"capslock\",27:\"esc\",32:\"space\",33:\"pageup\",34:\"pagedown\",35:\"end\",36:\"home\",37:\"left\",38:\"up\",39:\"right\",40:\"down\",45:\"insert\",46:\"del\",96:\"0\",97:\"1\",98:\"2\",99:\"3\",100:\"4\",101:\"5\",102:\"6\",103:\"7\",104:\"8\",105:\"9\",106:\"*\",107:\"+\",109:\"-\",110:\".\",111:\"/\",112:\"f1\",113:\"f2\",114:\"f3\",115:\"f4\",116:\"f5\",117:\"f6\",118:\"f7\",119:\"f8\",120:\"f9\",121:\"f10\",122:\"f11\",123:\"f12\",144:\"numlock\",145:\"scroll\",191:\"/\",224:\"meta\",219:\"[\",221:\"]\"},shiftNums:{\"`\":\"~\",\"1\":\"!\",\"2\":\"@\",\"3\":\"#\",\"4\":\"$\",\"5\":\"%\",\"6\":\"^\",\"7\":\"&\",\"8\":\"*\",\"9\":\"(\",\"0\":\")\",\"-\":\"_\",\"=\":\"+\",\";\":\": \",\"'\":'\"',\",\":\"<\",\".\":\">\",\"/\":\"?\",\"\\\\\":\"|\"}};function a(d){if(typeof d.data!==\"string\"){return}var c=d.handler,e=d.data.toLowerCase().split(\" \");d.handler=function(n){if(this!==n.target&&(n.which !== 27 && (/textarea|select/i.test(n.target.nodeName)||n.target.type===\"text\"))){return}var h=n.type!==\"keypress\"&&b.hotkeys.specialKeys[n.which],o=String.fromCharCode(n.which).toLowerCase(),k,m=\"\",g={};if(n.altKey&&h!==\"alt\"){m+=\"alt+\"}if(n.ctrlKey&&h!==\"ctrl\"){m+=\"ctrl+\"}if(n.metaKey&&!n.ctrlKey&&h!==\"meta\"){m+=\"meta+\"}if(n.shiftKey&&h!==\"shift\"){m+=\"shift+\"}if(h){g[m+h]=true}else{g[m+o]=true;g[m+b.hotkeys.shiftNums[o]]=true;if(m===\"shift+\"){g[b.hotkeys.shiftNums[o]]=true}}for(var j=0,f=e.length;j<f;j++){if(g[e[j]]){return c.apply(this,arguments)}}}}b.each([\"keydown\",\"keyup\",\"keypress\"],function(){b.event.special[this]={add:a}})\n\nreturn b;\n}\n","/*\n * Todo: Update to latest at https://github.com/cowboy/jquery-bbq ?\n * jQuery BBQ: Back Button & Query Library - v1.2.1 - 2/17/2010\n * http://benalman.com/projects/jquery-bbq-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n\n// For sake of modules, added this wrapping export and changed `this` to `window`\nexport default function (jQuery) {\n\n(function($,p){var i,m=Array.prototype.slice,r=decodeURIComponent,a=$.param,c,l,v,b=$.bbq=$.bbq||{},q,u,j,e=$.event.special,d=\"hashchange\",A=\"querystring\",D=\"fragment\",y=\"elemUrlAttr\",g=\"location\",k=\"href\",t=\"src\",x=/^.*\\?|#.*$/g,w=/^.*\\#/,h,C={};function E(F){return typeof F===\"string\"}function B(G){var F=m.call(arguments,1);return function(){return G.apply(this,F.concat(m.call(arguments)))}}function n(F){return F.replace(/^[^#]*#?(.*)$/,\"$1\")}function o(F){return F.replace(/(?:^[^?#]*\\?([^#]*).*$)?.*/,\"$1\")}function f(H,M,F,I,G){var O,L,K,N,J;if(I!==i){K=F.match(H?/^([^#]*)\\#?(.*)$/:/^([^#?]*)\\??([^#]*)(#?.*)/);J=K[3]||\"\";if(G===2&&E(I)){L=I.replace(H?w:x,\"\")}else{N=l(K[2]);I=E(I)?l[H?D:A](I):I;L=G===2?I:G===1?$.extend({},I,N):$.extend({},N,I);L=a(L);if(H){L=L.replace(h,r)}}O=K[1]+(H?\"#\":L||!K[1]?\"?\":\"\")+L+J}else{O=M(F!==i?F:p[g][k])}return O}a[A]=B(f,0,o);a[D]=c=B(f,1,n);c.noEscape=function(G){G=G||\"\";var F=$.map(G.split(\"\"),encodeURIComponent);h=new RegExp(F.join(\"|\"),\"g\")};c.noEscape(\",/\");$.deparam=l=function(I,F){var H={},G={\"true\":!0,\"false\":!1,\"null\":null};$.each(I.replace(/\\+/g,\" \").split(\"&\"),function(L,Q){var K=Q.split(\"=\"),P=r(K[0]),J,O=H,M=0,R=P.split(\"][\"),N=R.length-1;if(/\\[/.test(R[0])&&/\\]$/.test(R[N])){R[N]=R[N].replace(/\\]$/,\"\");R=R.shift().split(\"[\").concat(R);N=R.length-1}else{N=0}if(K.length===2){J=r(K[1]);if(F){J=J&&!isNaN(J)?+J:J===\"undefined\"?i:G[J]!==i?G[J]:J}if(N){for(;M<=N;M++){P=R[M]===\"\"?O.length:R[M];O=O[P]=M<N?O[P]||(R[M+1]&&isNaN(R[M+1])?{}:[]):J}}else{if($.isArray(H[P])){H[P].push(J)}else{if(H[P]!==i){H[P]=[H[P],J]}else{H[P]=J}}}}else{if(P){H[P]=F?i:\"\"}}});return H};function z(H,F,G){if(F===i||typeof F===\"boolean\"){G=F;F=a[H?D:A]()}else{F=E(F)?F.replace(H?w:x,\"\"):F}return l(F,G)}l[A]=B(z,0);l[D]=v=B(z,1);$[y]||($[y]=function(F){return $.extend(C,F)})({a:k,base:k,iframe:t,img:t,input:t,form:\"action\",link:k,script:t});j=$[y];function s(I,G,H,F){if(!E(H)&&typeof H!==\"object\"){F=H;H=G;G=i}return this.each(function(){var L=$(this),J=G||j()[(this.nodeName||\"\").toLowerCase()]||\"\",K=J&&L.attr(J)||\"\";L.attr(J,a[I](K,H,F))})}$.fn[A]=B(s,A);$.fn[D]=B(s,D);b.pushState=q=function(I,F){if(E(I)&&/^#/.test(I)&&F===i){F=2}var H=I!==i,G=c(p[g][k],H?I:{},H?F:2);p[g][k]=G+(/#/.test(G)?\"\":\"#\")};b.getState=u=function(F,G){return F===i||typeof F===\"boolean\"?v(F):v(G)[F]};b.removeState=function(F){var G={};if(F!==i){G=u();$.each($.isArray(F)?F:arguments,function(I,H){delete G[H]})}q(G,2)};e[d]=$.extend(e[d],{add:function(F){var H;function G(J){var I=J[D]=c();J.getState=function(K,L){return K===i||typeof K===\"boolean\"?l(I,K):l(I,L)[K]};H.apply(this,arguments)}if($.isFunction(F)){H=F;return G}else{H=F.handler;F.handler=G}}})})(jQuery,window);\n/*\n * jQuery hashchange event - v1.2 - 2/11/2010\n * http://benalman.com/projects/jquery-hashchange-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n(function($,i,b){var j,k=$.event.special,c=\"location\",d=\"hashchange\",l=\"href\",f=$.browser,g=document.documentMode,h=f.msie&&(g===b||g<8),e=\"on\"+d in i&&!h;function a(m){m=m||i[c][l];return m.replace(/^[^#]*#?(.*)$/,\"$1\")}$[d+\"Delay\"]=100;k[d]=$.extend(k[d],{setup:function(){if(e){return false}$(j.start)},teardown:function(){if(e){return false}$(j.stop)}});j=(function(){var m={},r,n,o,q;function p(){o=q=function(s){return s};if(h){n=$('<iframe src=\"javascript:0\"/>').hide().insertAfter(\"body\")[0].contentWindow;q=function(){return a(n.document[c][l])};o=function(u,s){if(u!==s){var t=n.document;t.open().close();t[c].hash=\"#\"+u}};o(a())}}m.start=function(){if(r){return}var t=a();o||p();(function s(){var v=a(),u=q(t);if(v!==t){o(t=v,u);$(i).trigger(d)}else{if(u!==t){i[c][l]=i[c][l].replace(/#.*/,\"\")+\"#\"+u}}r=setTimeout(s,$[d+\"Delay\"])})()};m.stop=function(){if(!n){r&&clearTimeout(r);r=0}};return m})()})(jQuery,window);\n\nreturn jQuery;\n}\n","/**\n * SVG Icon Loader 2.0\n *\n * jQuery Plugin for loading SVG icons from a single file\n *\n * Adds {@link external:jQuery.svgIcons}, {@link external:jQuery.getSvgIcon}, {@link external:jQuery.resizeSvgIcons}\n *\n * How to use:\n\n1. Create the SVG master file that includes all icons:\n\nThe master SVG icon-containing file is an SVG file that contains\n`<g>` elements. Each `<g>` element should contain the markup of an SVG\nicon. The `<g>` element has an ID that should\ncorrespond with the ID of the HTML element used on the page that should contain\nor optionally be replaced by the icon. Additionally, one empty element should be\nadded at the end with id \"svg_eof\".\n\n2. Optionally create fallback raster images for each SVG icon.\n\n3. Include the jQuery and the SVG Icon Loader scripts on your page.\n\n4. Run `$.svgIcons()` when the document is ready. See its signature\n\n5. To access an icon at a later point without using the callback, use this:\n  `$.getSvgIcon(id (string), uniqueClone (boolean))`;\n\nThis will return the icon (as jQuery object) with a given ID.\n\n6. To resize icons at a later point without using the callback, use this:\n  `$.resizeSvgIcons(resizeOptions)` (use the same way as the \"resize\" parameter)\n *\n * @module jQuerySVGIcons\n * @license MIT\n * @copyright (c) 2009 Alexis Deveria\n * {@link http://a.deveria.com}\n * @example usage #1:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg'); // The SVG file that contains all icons\n  // No options have been set, so all icons will automatically be inserted\n  // into HTML elements that match the same IDs.\n});\n\n* @example usage #2:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg', { // The SVG file that contains all icons\n    callback (icons) { // Custom callback function that sets click\n                  // events for each icon\n      $.each(icons, function(id, icon) {\n        icon.click(function() {\n          alert('You clicked on the icon with id ' + id);\n        });\n      });\n    }\n  }); //The SVG file that contains all icons\n});\n\n* @example usage #3:\n\n$(function() {\n  $.svgIcons('my_icon_set.svgz', { // The SVGZ file that contains all icons\n    w: 32,  // All icons will be 32px wide\n    h: 32,  // All icons will be 32px high\n    fallback_path: 'icons/',  // All fallback files can be found here\n    fallback: {\n      '#open_icon': 'open.png',  // The \"open.png\" will be appended to the\n                    // HTML element with ID \"open_icon\"\n      '#close_icon': 'close.png',\n      '#save_icon': 'save.png'\n    },\n    placement: {'.open_icon','open'}, // The \"open\" icon will be added\n                    // to all elements with class \"open_icon\"\n    resize () {\n      '#save_icon .svg_icon': 64  // The \"save\" icon will be resized to 64 x 64px\n    },\n\n    callback (icons) { // Sets background color for \"close\" icon\n      icons['close'].css('background','red');\n    },\n\n    svgz: true // Indicates that an SVGZ file is being used\n\n  })\n});\n*/\n\n/**\n* @callback module:jQuerySVGIcons.SVGIconsLoadedCallback\n* @param {PlainObject.<string, external:jQuery>} svgIcons IDs keyed to jQuery objects of images\n*/\n\n/**\n * @function module:jQuerySVGIcons.jQuerySVGIcons\n * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object\n * @returns {external:jQuery} The enhanced jQuery object\n*/\nexport default function ($) {\n  const svgIcons = {};\n\n  let fixIDs;\n  /**\n  * @function external:jQuery.svgIcons\n  * @param {string} file The location of a local SVG or SVGz file\n  * @param {PlainObject} [opts]\n  * @param {Float} [opts.w] The icon widths\n  * @param {Float} [opts.h] The icon heights\n  * @param {PlainObject.<string, string>} [opts.fallback] List of raster images with each\n    key being the SVG icon ID to replace, and the value the image file name\n  * @param {string} [opts.fallback_path] The path to use for all images\n    listed under \"fallback\"\n  * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,\n    rather than include the SVG icon.\n  * @param {PlainObject.<string, string>} [opts.placement] List with selectors for keys and SVG icon ids\n    as values. This provides a custom method of adding icons.\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} [opts.resize] List with selectors for keys and numbers\n    as values. This allows an easy way to resize specific icons.\n  * @param {module:jQuerySVGIcons.SVGIconsLoadedCallback} [opts.callback] A function to call when all icons have been loaded.\n  * @param {boolean} [opts.id_match=true] Automatically attempt to match SVG icon ids with\n    corresponding HTML id\n  * @param {boolean} [opts.no_img] Prevent attempting to convert the icon into an `<img>`\n    element (may be faster, help for browser consistency)\n  * @param {boolean} [opts.svgz] Indicate that the file is an SVGZ file, and thus not to\n    parse as XML. SVGZ files add compression benefits, but getting data from\n    them fails in Firefox 2 and older.\n  * @returns {undefined}\n  */\n  $.svgIcons = function (file, opts = {}) {\n    const svgns = 'http://www.w3.org/2000/svg',\n      xlinkns = 'http://www.w3.org/1999/xlink',\n      iconW = opts.w || 24,\n      iconH = opts.h || 24;\n    let elems, svgdoc, testImg,\n      iconsMade = false, dataLoaded = false, loadAttempts = 0;\n    const isOpera = !!window.opera,\n      // ua = navigator.userAgent,\n      // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),\n      dataPre = 'data:image/svg+xml;charset=utf-8;base64,';\n\n    let dataEl;\n    if (opts.svgz) {\n      dataEl = $('<object data=\"' + file + '\" type=image/svg+xml>').appendTo('body').hide();\n      try {\n        svgdoc = dataEl[0].contentDocument;\n        dataEl.load(getIcons);\n        getIcons(0, true); // Opera will not run \"load\" event if file is already cached\n      } catch (err1) {\n        useFallback();\n      }\n    } else {\n      const parser = new DOMParser();\n      $.ajax({\n        url: file,\n        dataType: 'string',\n        success (data) {\n          if (!data) {\n            $(useFallback);\n            return;\n          }\n          svgdoc = parser.parseFromString(data, 'text/xml');\n          $(function () {\n            getIcons('ajax');\n          });\n        },\n        error (err) {\n          // TODO: Fix Opera widget icon bug\n          if (window.opera) {\n            $(function () {\n              useFallback();\n            });\n          } else {\n            if (err.responseText) {\n              svgdoc = parser.parseFromString(err.responseText, 'text/xml');\n\n              if (!svgdoc.childNodes.length) {\n                $(useFallback);\n              }\n              $(function () {\n                getIcons('ajax');\n              });\n            } else {\n              $(useFallback);\n            }\n          }\n        }\n      });\n    }\n\n    function getIcons (evt, noWait) {\n      if (evt !== 'ajax') {\n        if (dataLoaded) return;\n        // Webkit sometimes says svgdoc is undefined, other times\n        // it fails to load all nodes. Thus we must make sure the \"eof\"\n        // element is loaded.\n        svgdoc = dataEl[0].contentDocument; // Needed again for Webkit\n        const isReady = (svgdoc && svgdoc.getElementById('svg_eof'));\n        if (!isReady && !(noWait && isReady)) {\n          loadAttempts++;\n          if (loadAttempts < 50) {\n            setTimeout(getIcons, 20);\n          } else {\n            useFallback();\n            dataLoaded = true;\n          }\n          return;\n        }\n        dataLoaded = true;\n      }\n\n      elems = $(svgdoc.firstChild).children(); // .getElementsByTagName('foreignContent');\n\n      if (!opts.no_img) {\n        const testSrc = dataPre + 'PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzUiIGhlaWdodD0iMjc1Ij48L3N2Zz4%3D';\n\n        testImg = $(new Image()).attr({\n          src: testSrc,\n          width: 0,\n          height: 0\n        }).appendTo('body')\n          .load(function () {\n            // Safari 4 crashes, Opera and Chrome don't\n            makeIcons(true);\n          }).error(function () {\n            makeIcons();\n          });\n      } else {\n        setTimeout(function () {\n          if (!iconsMade) makeIcons();\n        }, 500);\n      }\n    }\n\n    function setIcon (target, icon, id, setID) {\n      if (isOpera) icon.css('visibility', 'hidden');\n      if (opts.replace) {\n        if (setID) icon.attr('id', id);\n        const cl = target.attr('class');\n        if (cl) icon.attr('class', 'svg_icon ' + cl);\n        target.replaceWith(icon);\n      } else {\n        target.append(icon);\n      }\n      if (isOpera) {\n        setTimeout(function () {\n          icon.removeAttr('style');\n        }, 1);\n      }\n    }\n\n    let holder;\n    function addIcon (icon, id) {\n      if (opts.id_match === undefined || opts.id_match !== false) {\n        setIcon(holder, icon, id, true);\n      }\n      svgIcons[id] = icon;\n    }\n\n    function makeIcons (toImage, fallback) {\n      if (iconsMade) return;\n      if (opts.no_img) toImage = false;\n\n      let tempHolder;\n      if (toImage) {\n        tempHolder = $(document.createElement('div'));\n        tempHolder.hide().appendTo('body');\n      }\n      if (fallback) {\n        const path = opts.fallback_path || '';\n        $.each(fallback, function (id, imgsrc) {\n          holder = $('#' + id);\n          const icon = $(new Image())\n            .attr({\n              class: 'svg_icon',\n              src: path + imgsrc,\n              width: iconW,\n              height: iconH,\n              alt: 'icon'\n            });\n\n          addIcon(icon, id);\n        });\n      } else {\n        const len = elems.length;\n        for (let i = 0; i < len; i++) {\n          const elem = elems[i];\n          const {id} = elem;\n          if (id === 'svg_eof') break;\n          holder = $('#' + id);\n          const svgroot = document.createElementNS(svgns, 'svg');\n          // Per https://www.w3.org/TR/xml-names11/#defaulting, the namespace for\n          // attributes should have no value.\n          svgroot.setAttribute('viewBox', [0, 0, iconW, iconH].join(' '));\n\n          let svg = elem.getElementsByTagNameNS(svgns, 'svg')[0];\n\n          // Make flexible by converting width/height to viewBox\n          const w = svg.getAttribute('width');\n          const h = svg.getAttribute('height');\n          svg.removeAttribute('width');\n          svg.removeAttribute('height');\n\n          const vb = svg.getAttribute('viewBox');\n          if (!vb) {\n            svg.setAttribute('viewBox', [0, 0, w, h].join(' '));\n          }\n\n          // Not using jQuery to be a bit faster\n          svgroot.setAttribute('xmlns', svgns);\n          svgroot.setAttribute('width', iconW);\n          svgroot.setAttribute('height', iconH);\n          svgroot.setAttribute('xmlns:xlink', xlinkns);\n          svgroot.setAttribute('class', 'svg_icon');\n\n          // Without cloning, Firefox will make another GET request.\n          // With cloning, causes issue in Opera/Win/Non-EN\n          if (!isOpera) svg = svg.cloneNode(true);\n\n          svgroot.append(svg);\n\n          let icon;\n          if (toImage) {\n            tempHolder.empty().append(svgroot);\n            const str = dataPre + encode64(unescape(encodeURIComponent(new XMLSerializer().serializeToString(svgroot))));\n            icon = $(new Image())\n              .attr({class: 'svg_icon', src: str});\n          } else {\n            icon = fixIDs($(svgroot), i);\n          }\n          addIcon(icon, id);\n        }\n      }\n\n      if (opts.placement) {\n        $.each(opts.placement, function (sel, id) {\n          if (!svgIcons[id]) return;\n          $(sel).each(function (i) {\n            let copy = svgIcons[id].clone();\n            if (i > 0 && !toImage) copy = fixIDs(copy, i, true);\n            setIcon($(this), copy, id);\n          });\n        });\n      }\n      if (!fallback) {\n        if (toImage) tempHolder.remove();\n        if (dataEl) dataEl.remove();\n        if (testImg) testImg.remove();\n      }\n      if (opts.resize) $.resizeSvgIcons(opts.resize);\n      iconsMade = true;\n\n      if (opts.callback) opts.callback(svgIcons);\n    }\n\n    fixIDs = function (svgEl, svgNum, force) {\n      const defs = svgEl.find('defs');\n      if (!defs.length) return svgEl;\n\n      let idElems;\n      if (isOpera) {\n        idElems = defs.find('*').filter(function () {\n          return !!this.id;\n        });\n      } else {\n        idElems = defs.find('[id]');\n      }\n\n      const allElems = svgEl[0].getElementsByTagName('*'), len = allElems.length;\n\n      idElems.each(function (i) {\n        const {id} = this;\n        /*\n        const noDupes = ($(svgdoc).find('#' + id).length <= 1);\n        if (isOpera) noDupes = false; // Opera didn't clone svgEl, so not reliable\n        if(!force && noDupes) return;\n        */\n        const newId = 'x' + id + svgNum + i;\n        this.id = newId;\n\n        const oldVal = 'url(#' + id + ')';\n        const newVal = 'url(#' + newId + ')';\n\n        // Selector method, possibly faster but fails in Opera / jQuery 1.4.3\n        //  svgEl.find('[fill=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('fill', 'url(#' + newId + ')');\n        //  }).end().find('[stroke=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('stroke', 'url(#' + newId + ')');\n        //  }).end().find('use').each(function() {\n        //    if(this.getAttribute('xlink:href') == '#' + id) {\n        //      this.setAttributeNS(xlinkns,'href','#' + newId);\n        //    }\n        //  }).end().find('[filter=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('filter', 'url(#' + newId + ')');\n        //  });\n\n        for (i = 0; i < len; i++) {\n          const elem = allElems[i];\n          if (elem.getAttribute('fill') === oldVal) {\n            elem.setAttribute('fill', newVal);\n          }\n          if (elem.getAttribute('stroke') === oldVal) {\n            elem.setAttribute('stroke', newVal);\n          }\n          if (elem.getAttribute('filter') === oldVal) {\n            elem.setAttribute('filter', newVal);\n          }\n        }\n      });\n      return svgEl;\n    };\n\n    function useFallback () {\n      if (file.includes('.svgz')) {\n        const regFile = file.replace('.svgz', '.svg');\n        if (window.console) {\n          console.log('.svgz failed, trying with .svg');\n        }\n        $.svgIcons(regFile, opts);\n      } else if (opts.fallback) {\n        makeIcons(false, opts.fallback);\n      }\n    }\n\n    function encode64 (input) {\n      // base64 strings are 4/3 larger than the original string\n      if (window.btoa) return window.btoa(input);\n      const _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n      const output = new Array(Math.floor((input.length + 2) / 3) * 4);\n\n      let i = 0, p = 0;\n      do {\n        const chr1 = input.charCodeAt(i++);\n        const chr2 = input.charCodeAt(i++);\n        const chr3 = input.charCodeAt(i++);\n\n        const enc1 = chr1 >> 2;\n        const enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n\n        let enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n        let enc4 = chr3 & 63;\n        if (isNaN(chr2)) {\n          enc3 = enc4 = 64;\n        } else if (isNaN(chr3)) {\n          enc4 = 64;\n        }\n\n        output[p++] = _keyStr.charAt(enc1);\n        output[p++] = _keyStr.charAt(enc2);\n        output[p++] = _keyStr.charAt(enc3);\n        output[p++] = _keyStr.charAt(enc4);\n      } while (i < input.length);\n\n      return output.join('');\n    }\n  };\n\n  /**\n  * @function external:jQuery.getSvgIcon\n  * @param {string} id\n  * @param {boolean} uniqueClone Whether to clone\n  * @returns {external:jQuery} The icon (optionally cloned)\n  */\n  $.getSvgIcon = function (id, uniqueClone) {\n    let icon = svgIcons[id];\n    if (uniqueClone && icon) {\n      icon = fixIDs(icon, 0, true).clone(true);\n    }\n    return icon;\n  };\n\n  /**\n  * @typedef {GenericArray} module:jQuerySVGIcons.Dimensions\n  * @property {Integer} length 2\n  * @property {Float} 0 Width\n  * @property {Float} 1 Height\n  */\n\n  /**\n  * If a Float is used, it will represent width and height. Arrays contain the width and height.\n  * @typedef {module:jQuerySVGIcons.Dimensions|Float} module:jQuerySVGIcons.Size\n  */\n\n  /**\n  * @function external:jQuery.resizeSvgIcons\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} obj Object with selectors as keys. The values are sizes.\n  * @returns {undefined}\n  */\n  $.resizeSvgIcons = function (obj) {\n    // FF2 and older don't detect .svg_icon, so we change it detect svg elems instead\n    const changeSel = !$('.svg_icon:first').length;\n    $.each(obj, function (sel, size) {\n      const arr = Array.isArray(size);\n      const w = arr ? size[0] : size,\n        h = arr ? size[1] : size;\n      if (changeSel) {\n        sel = sel.replace(/\\.svg_icon/g, 'svg');\n      }\n      $(sel).each(function () {\n        this.setAttribute('width', w);\n        this.setAttribute('height', h);\n        if (window.opera && window.widget) {\n          this.parentNode.style.width = w + 'px';\n          this.parentNode.style.height = h + 'px';\n        }\n      });\n    });\n  };\n  return $;\n}\n","/**\n * SpinButton control\n *\n * Adds bells and whistles to any ordinary textbox to\n * make it look and feel like a SpinButton Control.\n *\n * Supplies {@link external:jQuery.fn.SpinButton} (and also {@link external:jQuery.loadingStylesheets})\n *\n * Originally written by George Adamson, Software Unity (george.jquery@softwareunity.com) August 2006.\n * - Added min/max options\n * - Added step size option\n * - Added bigStep (page up/down) option\n *\n * Modifications made by Mark Gibson, (mgibson@designlinks.net) September 2006:\n * - Converted to jQuery plugin\n * - Allow limited or unlimited min/max values\n * - Allow custom class names, and add class to input element\n * - Removed global vars\n * - Reset (to original or through config) when invalid value entered\n * - Repeat whilst holding mouse button down (with initial pause, like keyboard repeat)\n * - Support mouse wheel in Firefox\n * - Fix double click in IE\n * - Refactored some code and renamed some vars\n *\n * Modifications by Jeff Schiller, June 2009:\n * - provide callback function for when the value changes based on the following\n *   {@link https://www.mail-archive.com/jquery-en@googlegroups.com/msg36070.html}\n *\n * Modifications by Jeff Schiller, July 2009:\n * - improve styling for widget in Opera\n * - consistent key-repeat handling cross-browser\n *\n * Modifications by Alexis Deveria, October 2009:\n * - provide \"stepfunc\" callback option to allow custom function to run when changing a value\n * - Made adjustValue(0) only run on certain keyup events, not all.\n *\n * Tested in IE6, Opera9, Firefox 1.5\n *\n * | Version | Date | Author | Notes\n * |---------|------|--------|------|\n * | v1.0 | 11 Aug 2006 | George Adamson | First release\n * | v1.1 | Aug 2006 | George Adamson | Minor enhancements\n * | v1.2 | 27 Sep 2006 | Mark Gibson | Major enhancements\n * | v1.3a | 28 Sep 2006 | George Adamson | Minor enhancements\n * | v1.4 | 18 Jun 2009 | Jeff Schiller | Added callback function\n * | v1.5 | 06 Jul 2009 | Jeff Schiller | Fixes for Opera.\n * | v1.6 | 13 Oct 2009 | Alexis Deveria | Added stepfunc function\n * | v1.7 | 21 Oct 2009 | Alexis Deveria | Minor fixes.<br />Fast-repeat for keys and live updating as you type.\n * | v1.8 | 12 Jan 2010 | Benjamin Thomas | Fixes for mouseout behavior.<br />Added smallStep\n * | v1.9 | 20 May 2018 | Brett Zamir | Avoid SVGEdit dependency via `stateObj` config;<br />convert to ES6 module |\n * @module jQuerySpinButton\n * @example\n\n  // Create group of settings to initialise spinbutton(s). (Optional)\n  const myOptions = {\n    min: 0, // Set lower limit.\n    max: 100, // Set upper limit.\n    step: 1, // Set increment size.\n    smallStep: 0.5, // Set shift-click increment size.\n    stateObj: {tool_scale: 1}, // Object to allow passing in live-updating scale\n    spinClass: mySpinBtnClass, // CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n    upClass: mySpinUpClass, // CSS class for style when mouse over up button.\n    downClass: mySpinDnClass // CSS class for style when mouse over down button.\n  };\n\n  $(function () {\n    // Initialise INPUT element(s) as SpinButtons: (passing options if desired)\n    $(\"#myInputElement\").SpinButton(myOptions);\n  });\n */\n/**\n * @function module:jQuerySpinButton.jQuerySpinButton\n * @param {external:jQuery} $ The jQuery object to which to add the plug-in\n * @returns {external:jQuery}\n*/\nexport default function ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'spinbtn/jQuery.SpinButton.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @callback module:jQuerySpinButton.StepCallback\n  * @param {external:jQuery} thisArg Value of `this`\n  */\n  /**\n  * @callback module:jQuerySpinButton.ValueCallback\n  * @param {external:jQuery} thisArg Value of `this`\n  * @param {Float} value Value that was changed\n  */\n  /**\n   * @typedef {PlainObject} module:jQuerySpinButton.SpinButtonConfig\n   * @property {Float} min Set lower limit\n   * @property {Float} max Set upper limit.\n   * @property {Float} step Set increment size.\n   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust\n   * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)\n   * @property {Float} smallStep Set shift-click increment size.\n   * @property {PlainObject} stateObj Object to allow passing in live-updating scale\n   * @property {Float} stateObj.tool_scale\n   * @property {string} spinClass CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n   * @property {string} upClass CSS class for style when mouse over up button.\n   * @property {string} downClass CSS class for style when mouse over down button.\n   * @property {Float} page Value to be adjusted on page up/page down\n   * @property {Float} reset Reset value when invalid value entered\n   * @property {Float} delay Millisecond delay\n   * @property {Float} interval Millisecond interval\n  */\n  /**\n  * @function external:jQuery.fn.SpinButton\n  * @param {module:jQuerySpinButton.SpinButtonConfig} cfg\n  * @returns {external:jQuery}\n  */\n  $.fn.SpinButton = function (cfg) {\n    cfg = cfg || {};\n    function coord (el, prop) {\n      const b = document.body;\n\n      let c = el[prop];\n      while ((el = el.offsetParent) && (el !== b)) {\n        if (!$.browser.msie || (el.currentStyle.position !== 'relative')) {\n          c += el[prop];\n        }\n      }\n\n      return c;\n    }\n\n    return this.each(function () {\n      this.repeating = false;\n\n      // Apply specified options or defaults:\n      // (Ought to refactor this some day to use $.extend() instead)\n      this.spinCfg = {\n        // min: cfg.min ? Number(cfg.min) : null,\n        // max: cfg.max ? Number(cfg.max) : null,\n        min: !isNaN(parseFloat(cfg.min)) ? Number(cfg.min) : null, // Fixes bug with min:0\n        max: !isNaN(parseFloat(cfg.max)) ? Number(cfg.max) : null,\n        step: cfg.step ? Number(cfg.step) : 1,\n        stepfunc: cfg.stepfunc || false,\n        page: cfg.page ? Number(cfg.page) : 10,\n        upClass: cfg.upClass || 'up',\n        downClass: cfg.downClass || 'down',\n        reset: cfg.reset || this.value,\n        delay: cfg.delay ? Number(cfg.delay) : 500,\n        interval: cfg.interval ? Number(cfg.interval) : 100,\n        _btn_width: 20,\n        _direction: null,\n        _delay: null,\n        _repeat: null,\n        callback: cfg.callback || null\n      };\n\n      // if a smallStep isn't supplied, use half the regular step\n      this.spinCfg.smallStep = cfg.smallStep || this.spinCfg.step / 2;\n\n      this.adjustValue = function (i) {\n        let v;\n        if (isNaN(this.value)) {\n          v = this.spinCfg.reset;\n        } else if (typeof this.spinCfg.stepfunc === 'function') {\n          v = this.spinCfg.stepfunc(this, i);\n        } else {\n          // weirdest JavaScript bug ever: 5.1 + 0.1 = 5.199999999\n          v = Number((Number(this.value) + Number(i)).toFixed(5));\n        }\n        if (this.spinCfg.min !== null) { v = Math.max(v, this.spinCfg.min); }\n        if (this.spinCfg.max !== null) { v = Math.min(v, this.spinCfg.max); }\n        this.value = v;\n        if (typeof this.spinCfg.callback === 'function') { this.spinCfg.callback(this); }\n      };\n\n      $(this)\n        .addClass(cfg.spinClass || 'spin-button')\n\n        .mousemove(function (e) {\n          // Determine which button mouse is over, or not (spin direction):\n          const x = e.pageX || e.x;\n          const y = e.pageY || e.y;\n          const el = e.target;\n          const scale = cfg.stateObj.tool_scale || 1;\n          const height = $(el).height() / 2;\n\n          const direction =\n            (x > coord(el, 'offsetLeft') +\n              el.offsetWidth * scale - this.spinCfg._btn_width)\n              ? ((y < coord(el, 'offsetTop') + height * scale) ? 1 : -1) : 0;\n\n          if (direction !== this.spinCfg._direction) {\n            // Style up/down buttons:\n            switch (direction) {\n            case 1: // Up arrow:\n              $(this).removeClass(this.spinCfg.downClass).addClass(this.spinCfg.upClass);\n              break;\n            case -1: // Down arrow:\n              $(this).removeClass(this.spinCfg.upClass).addClass(this.spinCfg.downClass);\n              break;\n            default: // Mouse is elsewhere in the textbox\n              $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n            }\n\n            // Set spin direction:\n            this.spinCfg._direction = direction;\n          }\n        })\n\n        .mouseout(function () {\n          // Reset up/down buttons to their normal appearance when mouse moves away:\n          $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n          this.spinCfg._direction = null;\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .mousedown(function (e) {\n          if (e.button === 0 && this.spinCfg._direction !== 0) {\n            // Respond to click on one of the buttons:\n            const stepSize = e.shiftKey ? this.spinCfg.smallStep : this.spinCfg.step;\n\n            const adjust = () => {\n              this.adjustValue(this.spinCfg._direction * stepSize);\n            };\n\n            adjust();\n\n            // Initial delay before repeating adjustment\n            this.spinCfg._delay = window.setTimeout(() => {\n              adjust();\n              // Repeat adjust at regular intervals\n              this.spinCfg._repeat = window.setInterval(adjust, this.spinCfg.interval);\n            }, this.spinCfg.delay);\n          }\n        })\n\n        .mouseup(function (e) {\n          // Cancel repeating adjustment\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .dblclick(function (e) {\n          if ($.browser.msie) {\n            this.adjustValue(this.spinCfg._direction * this.spinCfg.step);\n          }\n        })\n\n        .keydown(function (e) {\n          // Respond to up/down arrow keys.\n          switch (e.keyCode) {\n          case 38: this.adjustValue(this.spinCfg.step); break; // Up\n          case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n          case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n          case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n          }\n        })\n\n        /*\n        http://unixpapa.com/js/key.html describes the current state-of-affairs for\n        key repeat events:\n        - Safari 3.1 changed their model so that keydown is reliably repeated going forward\n        - Firefox and Opera still only repeat the keypress event, not the keydown\n        */\n        .keypress(function (e) {\n          if (this.repeating) {\n            // Respond to up/down arrow keys.\n            switch (e.keyCode) {\n            case 38: this.adjustValue(this.spinCfg.step); break; // Up\n            case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n            case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n            case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n            }\n          // we always ignore the first keypress event (use the keydown instead)\n          } else {\n            this.repeating = true;\n          }\n        })\n\n        // clear the 'repeating' flag\n        .keyup(function (e) {\n          this.repeating = false;\n          switch (e.keyCode) {\n          case 38: // Up\n          case 40: // Down\n          case 33: // PageUp\n          case 34: // PageDown\n          case 13: this.adjustValue(0); break; // Enter/Return\n          }\n        })\n\n        .bind('mousewheel', function (e) {\n          // Respond to mouse wheel in IE. (It returns up/dn motion in multiples of 120)\n          if (e.wheelDelta >= 120) {\n            this.adjustValue(this.spinCfg.step);\n          } else if (e.wheelDelta <= -120) {\n            this.adjustValue(-this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        })\n\n        .change(function (e) {\n          this.adjustValue(0);\n        });\n\n      if (this.addEventListener) {\n        // Respond to mouse wheel in Firefox\n        this.addEventListener('DOMMouseScroll', function (e) {\n          if (e.detail > 0) {\n            this.adjustValue(-this.spinCfg.step);\n          } else if (e.detail < 0) {\n            this.adjustValue(this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        });\n      }\n    });\n  };\n  return $;\n}\n","/**\n * jQuery Context Menu Plugin\n * Cory S.N. LaViska\n * A Beautiful Site ({@link https://abeautifulsite.net/})\n * Modified by Alexis Deveria\n *\n * More info: {@link https://abeautifulsite.net/2008/09/jquery-context-menu-plugin/}\n *\n * @module jQueryContextMenu\n * @todo Update to latest version and adapt (and needs jQuery update as well): {@link https://github.com/swisnl/jQuery-contextMenu}\n * @version 1.01\n *\n * @license\n * Terms of Use\n *\n * This plugin is dual-licensed under the GNU General Public License\n *   and the MIT License and is copyright A Beautiful Site, LLC.\n *\n*/\nimport {isMac} from '../browser.js';\n\n/**\n* @callback module:jQueryContextMenu.jQueryContextMenuCallback\n* @param {string} href The `href` value after the first character (for bypassing an initial `#`)\n* @param {external:jQuery} srcElement The wrapped jQuery srcElement\n* @param {{x: Float, y: Float, docX: Float, docY: Float}} coords\n*/\n\n/**\n* @typedef {PlainObject} module:jQueryContextMenu.jQueryContextMenuConfig\n* @property {string} menu\n* @property {Float} inSpeed\n* @property {Float} outSpeed\n* @property {boolean} allowLeft\n*/\n\n/**\n* Adds {@link external:jQuery.fn.contextMenu},\n* {@link external:jQuery.fn.disableContextMenuItems},\n* {@link external:jQuery.fn.enableContextMenuItems},\n* {@link external:jQuery.fn.disableContextMenu},\n* {@link external:jQuery.fn.enableContextMenu},\n* {@link external:jQuery.fn.destroyContextMenu}.\n* @function module:jQueryContextMenu.jQueryContextMenu\n* @param {external:jQuery} $ The jQuery object to wrap (with `contextMenu`, `disableContextMenuItems`, `enableContextMenuItems`, `disableContextMenu`, `enableContextMenu`, `destroyContextMenu`)\n* @returns {external:jQuery}\n*/\nfunction jQueryContextMenu ($) {\n  const win = $(window);\n  const doc = $(document);\n\n  $.extend($.fn, {\n    /**\n    * @memberof external:jQuery.fn\n    * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o\n    * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback\n    * @returns {external:jQuery}\n    */\n    contextMenu (o, callback) {\n      // Defaults\n      if (o.menu === undefined) return false;\n      if (o.inSpeed === undefined) o.inSpeed = 150;\n      if (o.outSpeed === undefined) o.outSpeed = 75;\n      // 0 needs to be -1 for expected results (no fade)\n      if (o.inSpeed === 0) o.inSpeed = -1;\n      if (o.outSpeed === 0) o.outSpeed = -1;\n      // Loop each context menu\n      $(this).each(function () {\n        const el = $(this);\n        const offset = $(el).offset();\n\n        const menu = $('#' + o.menu);\n\n        // Add contextMenu class\n        menu.addClass('contextMenu');\n        // Simulate a true right click\n        $(this).bind('mousedown', function (e) {\n          const evt = e;\n          $(this).mouseup(function (e) {\n            const srcElement = $(this);\n            srcElement.unbind('mouseup');\n            if (evt.button === 2 || o.allowLeft ||\n              (evt.ctrlKey && isMac())) {\n              e.stopPropagation();\n              // Hide context menus that may be showing\n              $('.contextMenu').hide();\n              // Get this context menu\n\n              if (el.hasClass('disabled')) return false;\n\n              // Detect mouse position\n              let x = e.pageX, y = e.pageY;\n\n              const xOff = win.width() - menu.width(),\n                yOff = win.height() - menu.height();\n\n              if (x > xOff - 15) x = xOff - 15;\n              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF\n\n              // Show the menu\n              doc.unbind('click');\n              menu.css({top: y, left: x}).fadeIn(o.inSpeed);\n              // Hover events\n              menu.find('A').mouseover(function () {\n                menu.find('LI.hover').removeClass('hover');\n                $(this).parent().addClass('hover');\n              }).mouseout(function () {\n                menu.find('LI.hover').removeClass('hover');\n              });\n\n              // Keyboard\n              doc.keypress(function (e) {\n                switch (e.keyCode) {\n                case 38: // up\n                  if (!menu.find('LI.hover').length) {\n                    menu.find('LI:last').addClass('hover');\n                  } else {\n                    menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');\n                    if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');\n                  }\n                  break;\n                case 40: // down\n                  if (!menu.find('LI.hover').length) {\n                    menu.find('LI:first').addClass('hover');\n                  } else {\n                    menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');\n                    if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');\n                  }\n                  break;\n                case 13: // enter\n                  menu.find('LI.hover A').trigger('click');\n                  break;\n                case 27: // esc\n                  doc.trigger('click');\n                  break;\n                }\n              });\n\n              // When items are selected\n              menu.find('A').unbind('mouseup');\n              menu.find('LI:not(.disabled) A').mouseup(function () {\n                doc.unbind('click').unbind('keypress');\n                $('.contextMenu').hide();\n                // Callback\n                if (callback) {\n                  callback($(this).attr('href').substr(1), $(srcElement), {x: x - offset.left, y: y - offset.top, docX: x, docY: y});\n                }\n                return false;\n              });\n\n              // Hide bindings\n              setTimeout(function () { // Delay for Mozilla\n                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\ No newline at end of file
+{"version":3,"file":"index-umd.min.js","sources":["../editor/touch.js","../editor/namespaces.js","../editor/svgpathseg.js","../editor/browser.js","../editor/jQuery.attr.js","../editor/svgtransformlist.js","../editor/units.js","../editor/history.js","../editor/math.js","../editor/path.js","../editor/utilities.js","../editor/contextmenu.js","../editor/external/dynamic-import-polyfill/importModule.js","../editor/dbox.js","../editor/layer.js","../editor/historyrecording.js","../editor/draw.js","../editor/sanitize.js","../editor/recalculate.js","../editor/select.js","../editor/coords.js","../editor/svgcanvas.js","../editor/jgraduate/jQuery.jGraduate.js","../editor/jgraduate/jQuery.jPicker.js","../editor/locale/locale.js","../editor/external/load-stylesheets/index-es.js","../editor/svg-editor.js","../editor/js-hotkeys/jquery.hotkeys.min.js","../editor/jquerybbq/jquery.bbq.min.js","../editor/svgicons/jQuery.svgIcons.js","../editor/spinbtn/jQuery.SpinButton.js","../editor/contextmenu/jQuery.contextMenu.js"],"sourcesContent":["// http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/\n/**\n *\n * @param {Event} ev\n * @returns {undefined}\n */\nfunction touchHandler (ev) {\n  const {changedTouches} = ev,\n    first = changedTouches[0];\n\n  let type = '';\n  switch (ev.type) {\n  case 'touchstart': type = 'mousedown'; break;\n  case 'touchmove': type = 'mousemove'; break;\n  case 'touchend': type = 'mouseup'; break;\n  default: return;\n  }\n\n  const {screenX, screenY, clientX, clientY} = first; // eslint-disable-line no-shadow\n  const simulatedEvent = new MouseEvent(type, {\n    // Event interface\n    bubbles: true,\n    cancelable: true,\n    // UIEvent interface\n    view: window,\n    detail: 1, // click count\n    // MouseEvent interface (customized)\n    screenX, screenY, clientX, clientY,\n    // MouseEvent interface (defaults) - these could be removed\n    ctrlKey: false,\n    altKey: false,\n    shiftKey: false,\n    metaKey: false,\n    button: 0, // main button (usually left)\n    relatedTarget: null\n  });\n  if (changedTouches.length < 2) {\n    first.target.dispatchEvent(simulatedEvent);\n    ev.preventDefault();\n  }\n}\n\ndocument.addEventListener('touchstart', touchHandler, true);\ndocument.addEventListener('touchmove', touchHandler, true);\ndocument.addEventListener('touchend', touchHandler, true);\ndocument.addEventListener('touchcancel', touchHandler, true);\n","/**\n * Namespaces or tools therefor\n * @module namespaces\n * @license MIT\n*/\n\n/**\n* Common namepaces constants in alpha order\n* @enum {string}\n* @type {PlainObject}\n* @memberof module:namespaces\n*/\nexport const NS = {\n  HTML: 'http://www.w3.org/1999/xhtml',\n  MATH: 'http://www.w3.org/1998/Math/MathML',\n  SE: 'http://svg-edit.googlecode.com',\n  SVG: 'http://www.w3.org/2000/svg',\n  XLINK: 'http://www.w3.org/1999/xlink',\n  XML: 'http://www.w3.org/XML/1998/namespace',\n  XMLNS: 'http://www.w3.org/2000/xmlns/' // see http://www.w3.org/TR/REC-xml-names/#xmlReserved\n};\n\n/**\n* @function module:namespaces.getReverseNS\n* @returns {string} The NS with key values switched and lowercase\n*/\nexport const getReverseNS = function () {\n  const reverseNS = {};\n  Object.entries(NS).forEach(([name, URI]) => {\n    reverseNS[URI] = name.toLowerCase();\n  });\n  return reverseNS;\n};\n","/* globals SVGPathSeg, SVGPathSegMovetoRel, SVGPathSegMovetoAbs,\n    SVGPathSegMovetoRel, SVGPathSegLinetoRel, SVGPathSegLinetoAbs,\n    SVGPathSegLinetoHorizontalRel, SVGPathSegLinetoHorizontalAbs,\n    SVGPathSegLinetoVerticalRel, SVGPathSegLinetoVerticalAbs,\n    SVGPathSegClosePath, SVGPathSegCurvetoCubicRel,\n    SVGPathSegCurvetoCubicAbs, SVGPathSegCurvetoCubicSmoothRel,\n    SVGPathSegCurvetoCubicSmoothAbs, SVGPathSegCurvetoQuadraticRel,\n    SVGPathSegCurvetoQuadraticAbs, SVGPathSegCurvetoQuadraticSmoothRel,\n    SVGPathSegCurvetoQuadraticSmoothAbs, SVGPathSegArcRel, SVGPathSegArcAbs */\n/**\n* SVGPathSeg API polyfill\n* https://github.com/progers/pathseg\n*\n* This is a drop-in replacement for the `SVGPathSeg` and `SVGPathSegList` APIs\n* that were removed from SVG2 ({@link https://lists.w3.org/Archives/Public/www-svg/2015Jun/0044.html}),\n* including the latest spec changes which were implemented in Firefox 43 and\n* Chrome 46.\n*/\n/* eslint-disable no-shadow, class-methods-use-this */\n// Linting: We avoid `no-shadow` as ESLint thinks these are still available globals\n// Linting: We avoid `class-methods-use-this` as this is a polyfill that must\n//   follow the conventions\n(() => {\nif (!('SVGPathSeg' in window)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg\n  class SVGPathSeg {\n    constructor (type, typeAsLetter, owningPathSegList) {\n      this.pathSegType = type;\n      this.pathSegTypeAsLetter = typeAsLetter;\n      this._owningPathSegList = owningPathSegList;\n    }\n    // Notify owning PathSegList on any changes so they can be synchronized back to the path element.\n    _segmentChanged () {\n      if (this._owningPathSegList) {\n        this._owningPathSegList.segmentChanged(this);\n      }\n    }\n  }\n  SVGPathSeg.prototype.classname = 'SVGPathSeg';\n\n  SVGPathSeg.PATHSEG_UNKNOWN = 0;\n  SVGPathSeg.PATHSEG_CLOSEPATH = 1;\n  SVGPathSeg.PATHSEG_MOVETO_ABS = 2;\n  SVGPathSeg.PATHSEG_MOVETO_REL = 3;\n  SVGPathSeg.PATHSEG_LINETO_ABS = 4;\n  SVGPathSeg.PATHSEG_LINETO_REL = 5;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS = 6;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL = 7;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS = 8;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL = 9;\n  SVGPathSeg.PATHSEG_ARC_ABS = 10;\n  SVGPathSeg.PATHSEG_ARC_REL = 11;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS = 12;\n  SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL = 13;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS = 14;\n  SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL = 15;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;\n  SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;\n  SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;\n\n  class SVGPathSegClosePath extends SVGPathSeg {\n    constructor (owningPathSegList) {\n      super(SVGPathSeg.PATHSEG_CLOSEPATH, 'z', owningPathSegList);\n    }\n    toString () { return '[object SVGPathSegClosePath]'; }\n    _asPathString () { return this.pathSegTypeAsLetter; }\n    clone () { return new SVGPathSegClosePath(undefined); }\n  }\n\n  class SVGPathSegMovetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_ABS, 'M', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoAbs.prototype, {\n    x: {\n      get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true\n    },\n    y: {\n      get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true\n    }\n  });\n\n  class SVGPathSegMovetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_MOVETO_REL, 'm', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegMovetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegMovetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegMovetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_ABS, 'L', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_REL, 'l', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegLinetoRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS, 'C', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicAbs(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL, 'c', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicRel(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS, 'Q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticAbs(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x1, y1) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL, 'q', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x1 = x1;\n      this._y1 = y1;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticRel(undefined, this._x, this._y, this._x1, this._y1); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},\n    y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_ABS, 'A', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcAbs(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegArcRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {\n      super(SVGPathSeg.PATHSEG_ARC_REL, 'a', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._r1 = r1;\n      this._r2 = r2;\n      this._angle = angle;\n      this._largeArcFlag = largeArcFlag;\n      this._sweepFlag = sweepFlag;\n    }\n    toString () { return '[object SVGPathSegArcRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegArcRel(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }\n  }\n  Object.defineProperties(SVGPathSegArcRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},\n    r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},\n    angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},\n    largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},\n    sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegLinetoHorizontalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS, 'H', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalAbs(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalAbs.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoHorizontalRel extends SVGPathSeg {\n    constructor (owningPathSegList, x) {\n      super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL, 'h', owningPathSegList);\n      this._x = x;\n    }\n    toString () { return '[object SVGPathSegLinetoHorizontalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }\n    clone () { return new SVGPathSegLinetoHorizontalRel(undefined, this._x); }\n  }\n  Object.defineProperty(SVGPathSegLinetoHorizontalRel.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalAbs extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS, 'V', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalAbs(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalAbs.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegLinetoVerticalRel extends SVGPathSeg {\n    constructor (owningPathSegList, y) {\n      super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL, 'v', owningPathSegList);\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegLinetoVerticalRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }\n    clone () { return new SVGPathSegLinetoVerticalRel(undefined, this._y); }\n  }\n  Object.defineProperty(SVGPathSegLinetoVerticalRel.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});\n\n  class SVGPathSegCurvetoCubicSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS, 'S', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoCubicSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y, x2, y2) {\n      super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL, 's', owningPathSegList);\n      this._x = x;\n      this._y = y;\n      this._x2 = x2;\n      this._y2 = y2;\n    }\n    toString () { return '[object SVGPathSegCurvetoCubicSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoCubicSmoothRel(undefined, this._x, this._y, this._x2, this._y2); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoCubicSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},\n    x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},\n    y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothAbs extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS, 'T', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothAbs]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothAbs.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  class SVGPathSegCurvetoQuadraticSmoothRel extends SVGPathSeg {\n    constructor (owningPathSegList, x, y) {\n      super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL, 't', owningPathSegList);\n      this._x = x;\n      this._y = y;\n    }\n    toString () { return '[object SVGPathSegCurvetoQuadraticSmoothRel]'; }\n    _asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }\n    clone () { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, this._x, this._y); }\n  }\n  Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothRel.prototype, {\n    x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},\n    y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}\n  });\n\n  // Add createSVGPathSeg* functions to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathElement.\n  SVGPathElement.prototype.createSVGPathSegClosePath = function () { return new SVGPathSegClosePath(undefined); };\n  SVGPathElement.prototype.createSVGPathSegMovetoAbs = function (x, y) { return new SVGPathSegMovetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegMovetoRel = function (x, y) { return new SVGPathSegMovetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoAbs = function (x, y) { return new SVGPathSegLinetoAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoRel = function (x, y) { return new SVGPathSegLinetoRel(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicAbs(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicRel(undefined, x, y, x1, y1, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticAbs(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticRel(undefined, x, y, x1, y1); };\n  SVGPathElement.prototype.createSVGPathSegArcAbs = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcAbs(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegArcRel = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcRel(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs = function (x) { return new SVGPathSegLinetoHorizontalAbs(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel = function (x) { return new SVGPathSegLinetoHorizontalRel(undefined, x); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs = function (y) { return new SVGPathSegLinetoVerticalAbs(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel = function (y) { return new SVGPathSegLinetoVerticalRel(undefined, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothRel(undefined, x, y, x2, y2); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, x, y); };\n  SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, x, y); };\n\n  if (!('getPathSegAtLength' in SVGPathElement.prototype)) {\n    // Add getPathSegAtLength to SVGPathElement.\n    // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-__svg__SVGPathElement__getPathSegAtLength\n    // This polyfill requires SVGPathElement.getTotalLength to implement the distance-along-a-path algorithm.\n    SVGPathElement.prototype.getPathSegAtLength = function (distance) {\n      if (distance === undefined || !isFinite(distance)) {\n        throw new Error('Invalid arguments.');\n      }\n\n      const measurementElement = document.createElementNS('http://www.w3.org/2000/svg', 'path');\n      measurementElement.setAttribute('d', this.getAttribute('d'));\n      let lastPathSegment = measurementElement.pathSegList.numberOfItems - 1;\n\n      // If the path is empty, return 0.\n      if (lastPathSegment <= 0) {\n        return 0;\n      }\n\n      do {\n        measurementElement.pathSegList.removeItem(lastPathSegment);\n        if (distance > measurementElement.getTotalLength()) {\n          break;\n        }\n        lastPathSegment--;\n      } while (lastPathSegment > 0);\n      return lastPathSegment;\n    };\n  }\n\n  window.SVGPathSeg = SVGPathSeg;\n  window.SVGPathSegClosePath = SVGPathSegClosePath;\n  window.SVGPathSegMovetoAbs = SVGPathSegMovetoAbs;\n  window.SVGPathSegMovetoRel = SVGPathSegMovetoRel;\n  window.SVGPathSegLinetoAbs = SVGPathSegLinetoAbs;\n  window.SVGPathSegLinetoRel = SVGPathSegLinetoRel;\n  window.SVGPathSegCurvetoCubicAbs = SVGPathSegCurvetoCubicAbs;\n  window.SVGPathSegCurvetoCubicRel = SVGPathSegCurvetoCubicRel;\n  window.SVGPathSegCurvetoQuadraticAbs = SVGPathSegCurvetoQuadraticAbs;\n  window.SVGPathSegCurvetoQuadraticRel = SVGPathSegCurvetoQuadraticRel;\n  window.SVGPathSegArcAbs = SVGPathSegArcAbs;\n  window.SVGPathSegArcRel = SVGPathSegArcRel;\n  window.SVGPathSegLinetoHorizontalAbs = SVGPathSegLinetoHorizontalAbs;\n  window.SVGPathSegLinetoHorizontalRel = SVGPathSegLinetoHorizontalRel;\n  window.SVGPathSegLinetoVerticalAbs = SVGPathSegLinetoVerticalAbs;\n  window.SVGPathSegLinetoVerticalRel = SVGPathSegLinetoVerticalRel;\n  window.SVGPathSegCurvetoCubicSmoothAbs = SVGPathSegCurvetoCubicSmoothAbs;\n  window.SVGPathSegCurvetoCubicSmoothRel = SVGPathSegCurvetoCubicSmoothRel;\n  window.SVGPathSegCurvetoQuadraticSmoothAbs = SVGPathSegCurvetoQuadraticSmoothAbs;\n  window.SVGPathSegCurvetoQuadraticSmoothRel = SVGPathSegCurvetoQuadraticSmoothRel;\n}\n\n// Checking for SVGPathSegList in window checks for the case of an implementation without the\n// SVGPathSegList API.\n// The second check for appendItem is specific to Firefox 59+ which removed only parts of the\n// SVGPathSegList API (e.g., appendItem). In this case we need to re-implement the entire API\n// so the polyfill data (i.e., _list) is used throughout.\nif (!('SVGPathSegList' in window) || !('appendItem' in window.SVGPathSegList.prototype)) {\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSegList\n  class SVGPathSegList {\n    constructor (pathElement) {\n      this._pathElement = pathElement;\n      this._list = this._parsePath(this._pathElement.getAttribute('d'));\n\n      // Use a MutationObserver to catch changes to the path's \"d\" attribute.\n      this._mutationObserverConfig = {attributes: true, attributeFilter: ['d']};\n      this._pathElementMutationObserver = new MutationObserver(this._updateListFromPathMutations.bind(this));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n    // Process any pending mutations to the path element and update the list as needed.\n    // This should be the first call of all public functions and is needed because\n    // MutationObservers are not synchronous so we can have pending asynchronous mutations.\n    _checkPathSynchronizedToList () {\n      this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords());\n    }\n\n    _updateListFromPathMutations (mutationRecords) {\n      if (!this._pathElement) {\n        return;\n      }\n      let hasPathMutations = false;\n      mutationRecords.forEach((record) => {\n        if (record.attributeName === 'd') {\n          hasPathMutations = true;\n        }\n      });\n      if (hasPathMutations) {\n        this._list = this._parsePath(this._pathElement.getAttribute('d'));\n      }\n    }\n\n    // Serialize the list and update the path's 'd' attribute.\n    _writeListToPath () {\n      this._pathElementMutationObserver.disconnect();\n      this._pathElement.setAttribute('d', SVGPathSegList._pathSegArrayAsString(this._list));\n      this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);\n    }\n\n    // When a path segment changes the list needs to be synchronized back to the path element.\n    segmentChanged (pathSeg) {\n      this._writeListToPath();\n    }\n\n    clear () {\n      this._checkPathSynchronizedToList();\n\n      this._list.forEach((pathSeg) => {\n        pathSeg._owningPathSegList = null;\n      });\n      this._list = [];\n      this._writeListToPath();\n    }\n\n    initialize (newItem) {\n      this._checkPathSynchronizedToList();\n\n      this._list = [newItem];\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    _checkValidIndex (index) {\n      if (isNaN(index) || index < 0 || index >= this.numberOfItems) {\n        throw new Error('INDEX_SIZE_ERR');\n      }\n    }\n\n    getItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      return this._list[index];\n    }\n\n    insertItemBefore (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      // Spec: If the index is greater than or equal to numberOfItems, then the new item is appended to the end of the list.\n      if (index > this.numberOfItems) {\n        index = this.numberOfItems;\n      }\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.splice(index, 0, newItem);\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    replaceItem (newItem, index) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._checkValidIndex(index);\n      this._list[index] = newItem;\n      newItem._owningPathSegList = this;\n      this._writeListToPath();\n      return newItem;\n    }\n\n    removeItem (index) {\n      this._checkPathSynchronizedToList();\n\n      this._checkValidIndex(index);\n      const item = this._list[index];\n      this._list.splice(index, 1);\n      this._writeListToPath();\n      return item;\n    }\n\n    appendItem (newItem) {\n      this._checkPathSynchronizedToList();\n\n      if (newItem._owningPathSegList) {\n        // SVG2 spec says to make a copy.\n        newItem = newItem.clone();\n      }\n      this._list.push(newItem);\n      newItem._owningPathSegList = this;\n      // TODO: Optimize this to just append to the existing attribute.\n      this._writeListToPath();\n      return newItem;\n    }\n\n    // This closely follows SVGPathParser::parsePath from Source/core/svg/SVGPathParser.cpp.\n    _parsePath (string) {\n      if (!string || !string.length) {\n        return [];\n      }\n\n      const owningPathSegList = this; // eslint-disable-line consistent-this\n\n      class Builder {\n        constructor () {\n          this.pathSegList = [];\n        }\n        appendSegment (pathSeg) {\n          this.pathSegList.push(pathSeg);\n        }\n      }\n\n      class Source {\n        constructor (string) {\n          this._string = string;\n          this._currentIndex = 0;\n          this._endIndex = this._string.length;\n          this._previousCommand = SVGPathSeg.PATHSEG_UNKNOWN;\n\n          this._skipOptionalSpaces();\n        }\n        _isCurrentSpace () {\n          const character = this._string[this._currentIndex];\n          return character <= ' ' && (character === ' ' || character === '\\n' || character === '\\t' || character === '\\r' || character === '\\f');\n        }\n\n        _skipOptionalSpaces () {\n          while (this._currentIndex < this._endIndex && this._isCurrentSpace()) {\n            this._currentIndex++;\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        _skipOptionalSpacesOrDelimiter () {\n          if (this._currentIndex < this._endIndex && !this._isCurrentSpace() && this._string.charAt(this._currentIndex) !== ',') {\n            return false;\n          }\n          if (this._skipOptionalSpaces()) {\n            if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === ',') {\n              this._currentIndex++;\n              this._skipOptionalSpaces();\n            }\n          }\n          return this._currentIndex < this._endIndex;\n        }\n\n        hasMoreData () {\n          return this._currentIndex < this._endIndex;\n        }\n\n        peekSegmentType () {\n          const lookahead = this._string[this._currentIndex];\n          return this._pathSegTypeFromChar(lookahead);\n        }\n\n        _pathSegTypeFromChar (lookahead) {\n          switch (lookahead) {\n          case 'Z':\n          case 'z':\n            return SVGPathSeg.PATHSEG_CLOSEPATH;\n          case 'M':\n            return SVGPathSeg.PATHSEG_MOVETO_ABS;\n          case 'm':\n            return SVGPathSeg.PATHSEG_MOVETO_REL;\n          case 'L':\n            return SVGPathSeg.PATHSEG_LINETO_ABS;\n          case 'l':\n            return SVGPathSeg.PATHSEG_LINETO_REL;\n          case 'C':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;\n          case 'c':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;\n          case 'Q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;\n          case 'q':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;\n          case 'A':\n            return SVGPathSeg.PATHSEG_ARC_ABS;\n          case 'a':\n            return SVGPathSeg.PATHSEG_ARC_REL;\n          case 'H':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;\n          case 'h':\n            return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;\n          case 'V':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;\n          case 'v':\n            return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;\n          case 'S':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;\n          case 's':\n            return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;\n          case 'T':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;\n          case 't':\n            return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;\n          default:\n            return SVGPathSeg.PATHSEG_UNKNOWN;\n          }\n        }\n\n        _nextCommandHelper (lookahead, previousCommand) {\n          // Check for remaining coordinates in the current command.\n          if ((lookahead === '+' || lookahead === '-' || lookahead === '.' || (lookahead >= '0' && lookahead <= '9')) && previousCommand !== SVGPathSeg.PATHSEG_CLOSEPATH) {\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_ABS) {\n              return SVGPathSeg.PATHSEG_LINETO_ABS;\n            }\n            if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_REL) {\n              return SVGPathSeg.PATHSEG_LINETO_REL;\n            }\n            return previousCommand;\n          }\n          return SVGPathSeg.PATHSEG_UNKNOWN;\n        }\n\n        initialCommandIsMoveTo () {\n          // If the path is empty it is still valid, so return true.\n          if (!this.hasMoreData()) {\n            return true;\n          }\n          const command = this.peekSegmentType();\n          // Path must start with moveTo.\n          return command === SVGPathSeg.PATHSEG_MOVETO_ABS || command === SVGPathSeg.PATHSEG_MOVETO_REL;\n        }\n\n        // Parse a number from an SVG path. This very closely follows genericParseNumber(...) from Source/core/svg/SVGParserUtilities.cpp.\n        // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-PathDataBNF\n        _parseNumber () {\n          let exponent = 0;\n          let integer = 0;\n          let frac = 1;\n          let decimal = 0;\n          let sign = 1;\n          let expsign = 1;\n\n          const startIndex = this._currentIndex;\n\n          this._skipOptionalSpaces();\n\n          // Read the sign.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '+') {\n            this._currentIndex++;\n          } else if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '-') {\n            this._currentIndex++;\n            sign = -1;\n          }\n\n          if (this._currentIndex === this._endIndex || ((this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') && this._string.charAt(this._currentIndex) !== '.')) {\n            // The first character of a number must be one of [0-9+-.].\n            return undefined;\n          }\n\n          // Read the integer part, build right-to-left.\n          const startIntPartIndex = this._currentIndex;\n          while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n            this._currentIndex++; // Advance to first non-digit.\n          }\n\n          if (this._currentIndex !== startIntPartIndex) {\n            let scanIntPartIndex = this._currentIndex - 1;\n            let multiplier = 1;\n            while (scanIntPartIndex >= startIntPartIndex) {\n              integer += multiplier * (this._string.charAt(scanIntPartIndex--) - '0');\n              multiplier *= 10;\n            }\n          }\n\n          // Read the decimals.\n          if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '.') {\n            this._currentIndex++;\n\n            // There must be a least one digit following the .\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              frac *= 10;\n              decimal += (this._string.charAt(this._currentIndex) - '0') / frac;\n              this._currentIndex += 1;\n            }\n          }\n\n          // Read the exponent part.\n          if (this._currentIndex !== startIndex && this._currentIndex + 1 < this._endIndex && (this._string.charAt(this._currentIndex) === 'e' || this._string.charAt(this._currentIndex) === 'E') && (this._string.charAt(this._currentIndex + 1) !== 'x' && this._string.charAt(this._currentIndex + 1) !== 'm')) {\n            this._currentIndex++;\n\n            // Read the sign of the exponent.\n            if (this._string.charAt(this._currentIndex) === '+') {\n              this._currentIndex++;\n            } else if (this._string.charAt(this._currentIndex) === '-') {\n              this._currentIndex++;\n              expsign = -1;\n            }\n\n            // There must be an exponent.\n            if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {\n              return undefined;\n            }\n\n            while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {\n              exponent *= 10;\n              exponent += (this._string.charAt(this._currentIndex) - '0');\n              this._currentIndex++;\n            }\n          }\n\n          let number = integer + decimal;\n          number *= sign;\n\n          if (exponent) {\n            number *= Math.pow(10, expsign * exponent);\n          }\n\n          if (startIndex === this._currentIndex) {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n\n          return number;\n        }\n\n        _parseArcFlag () {\n          if (this._currentIndex >= this._endIndex) {\n            return undefined;\n          }\n          let flag = false;\n          const flagChar = this._string.charAt(this._currentIndex++);\n          if (flagChar === '0') {\n            flag = false;\n          } else if (flagChar === '1') {\n            flag = true;\n          } else {\n            return undefined;\n          }\n\n          this._skipOptionalSpacesOrDelimiter();\n          return flag;\n        }\n\n        parseSegment () {\n          const lookahead = this._string[this._currentIndex];\n          let command = this._pathSegTypeFromChar(lookahead);\n          if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n            // Possibly an implicit command. Not allowed if this is the first command.\n            if (this._previousCommand === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n            command = this._nextCommandHelper(lookahead, this._previousCommand);\n            if (command === SVGPathSeg.PATHSEG_UNKNOWN) {\n              return null;\n            }\n          } else {\n            this._currentIndex++;\n          }\n\n          this._previousCommand = command;\n\n          switch (command) {\n          case SVGPathSeg.PATHSEG_MOVETO_REL:\n            return new SVGPathSegMovetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_MOVETO_ABS:\n            return new SVGPathSegMovetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_REL:\n            return new SVGPathSegLinetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_ABS:\n            return new SVGPathSegLinetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:\n            return new SVGPathSegLinetoHorizontalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:\n            return new SVGPathSegLinetoHorizontalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:\n            return new SVGPathSegLinetoVerticalRel(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:\n            return new SVGPathSegLinetoVerticalAbs(owningPathSegList, this._parseNumber());\n          case SVGPathSeg.PATHSEG_CLOSEPATH:\n            this._skipOptionalSpaces();\n            return new SVGPathSegClosePath(owningPathSegList);\n          case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS: {\n            const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, points.x, points.y, points.x2, points.y2);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);\n          } case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:\n            return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:\n            return new SVGPathSegCurvetoQuadraticSmoothAbs(owningPathSegList, this._parseNumber(), this._parseNumber());\n          case SVGPathSeg.PATHSEG_ARC_REL: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } case SVGPathSeg.PATHSEG_ARC_ABS: {\n            const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};\n            return new SVGPathSegArcAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);\n          } default:\n            throw new Error('Unknown path seg type.');\n          }\n        }\n      }\n\n      const builder = new Builder();\n      const source = new Source(string);\n\n      if (!source.initialCommandIsMoveTo()) {\n        return [];\n      }\n      while (source.hasMoreData()) {\n        const pathSeg = source.parseSegment();\n        if (!pathSeg) {\n          return [];\n        }\n        builder.appendSegment(pathSeg);\n      }\n\n      return builder.pathSegList;\n    }\n  }\n\n  SVGPathSegList.prototype.classname = 'SVGPathSegList';\n\n  Object.defineProperty(SVGPathSegList.prototype, 'numberOfItems', {\n    get () {\n      this._checkPathSynchronizedToList();\n      return this._list.length;\n    },\n    enumerable: true\n  });\n\n  SVGPathSegList._pathSegArrayAsString = function (pathSegArray) {\n    let string = '';\n    let first = true;\n    pathSegArray.forEach((pathSeg) => {\n      if (first) {\n        first = false;\n        string += pathSeg._asPathString();\n      } else {\n        string += ' ' + pathSeg._asPathString();\n      }\n    });\n    return string;\n  };\n\n  // Add the pathSegList accessors to SVGPathElement.\n  // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGAnimatedPathData\n  Object.defineProperties(SVGPathElement.prototype, {\n    pathSegList: {\n      get () {\n        if (!this._pathSegList) {\n          this._pathSegList = new SVGPathSegList(this);\n        }\n        return this._pathSegList;\n      },\n      enumerable: true\n    },\n    // FIXME: The following are not implemented and simply return SVGPathElement.pathSegList.\n    normalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedPathSegList: {get () { return this.pathSegList; }, enumerable: true},\n    animatedNormalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true}\n  });\n  window.SVGPathSegList = SVGPathSegList;\n}\n})();\n","/* globals jQuery */\n/**\n * Browser detection\n * @module browser\n * @license MIT\n *\n * @copyright 2010 Jeff Schiller, 2010 Alexis Deveria\n */\n\n// Dependencies:\n// 1) jQuery (for $.alert())\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\n\nconst $ = jQuery;\n\nconst supportsSVG_ = (function () {\nreturn Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);\n}());\n\n/**\n * @function module:browser.supportsSvg\n * @returns {boolean}\n*/\nexport const supportsSvg = () => supportsSVG_;\n\nconst {userAgent} = navigator;\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n// Note: Browser sniffing should only be used if no other detection method is possible\nconst isOpera_ = Boolean(window.opera);\nconst isWebkit_ = userAgent.includes('AppleWebKit');\nconst isGecko_ = userAgent.includes('Gecko/');\nconst isIE_ = userAgent.includes('MSIE');\nconst isChrome_ = userAgent.includes('Chrome/');\nconst isWindows_ = userAgent.includes('Windows');\nconst isMac_ = userAgent.includes('Macintosh');\nconst isTouch_ = 'ontouchstart' in window;\n\nconst supportsSelectors_ = (function () {\nreturn Boolean(svg.querySelector);\n}());\n\nconst supportsXpath_ = (function () {\nreturn Boolean(document.evaluate);\n}());\n\n// segList functions (for FF1.5 and 2.0)\nconst supportsPathReplaceItem_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.replaceItem(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\nconst supportsPathInsertItemBefore_ = (function () {\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,10');\nconst seglist = path.pathSegList;\nconst seg = path.createSVGPathSegLinetoAbs(5, 5);\ntry {\n  seglist.insertItemBefore(seg, 1);\n  return true;\n} catch (err) {}\nreturn false;\n}());\n\n// text character positioning (for IE9 and now Chrome)\nconst supportsGoodTextCharPos_ = (function () {\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgroot);\nsvgcontent.setAttribute('x', 5);\nsvgroot.append(svgcontent);\nconst text = document.createElementNS(NS.SVG, 'text');\ntext.textContent = 'a';\nsvgcontent.append(text);\ntry { // Chrome now fails here\n  const pos = text.getStartPositionOfChar(0).x;\n  return (pos === 0);\n} catch (err) {\n  return false;\n} finally {\n  svgroot.remove();\n}\n}());\n\nconst supportsPathBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 C0,0 10,10 10,0');\nsvgcontent.append(path);\nconst bbox = path.getBBox();\nsvgcontent.remove();\nreturn (bbox.height > 4 && bbox.height < 5);\n}());\n\n// Support for correct bbox sizing on groups with horizontal/vertical lines\nconst supportsHVLineContainerBBox_ = (function () {\nconst svgcontent = document.createElementNS(NS.SVG, 'svg');\ndocument.documentElement.append(svgcontent);\nconst path = document.createElementNS(NS.SVG, 'path');\npath.setAttribute('d', 'M0,0 10,0');\nconst path2 = document.createElementNS(NS.SVG, 'path');\npath2.setAttribute('d', 'M5,0 15,0');\nconst g = document.createElementNS(NS.SVG, 'g');\ng.append(path, path2);\nsvgcontent.append(g);\nconst bbox = g.getBBox();\nsvgcontent.remove();\n// Webkit gives 0, FF gives 10, Opera (correctly) gives 15\nreturn (bbox.width === 15);\n}());\n\nconst supportsEditableText_ = (function () {\n// TODO: Find better way to check support for this\nreturn isOpera_;\n}());\n\nconst supportsGoodDecimals_ = (function () {\n// Correct decimals on clone attributes (Opera < 10.5/win/non-en)\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('x', 0.1);\nconst crect = rect.cloneNode(false);\nconst retValue = (!crect.getAttribute('x').includes(','));\nif (!retValue) {\n  // Todo: i18nize or remove\n  $.alert(\n    'NOTE: This version of Opera is known to contain bugs in SVG-edit.\\n' +\n    'Please upgrade to the <a href=\"http://opera.com\">latest version</a> in which the problems have been fixed.'\n  );\n}\nreturn retValue;\n}());\n\nconst supportsNonScalingStroke_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nrect.setAttribute('style', 'vector-effect:non-scaling-stroke');\nreturn rect.style.vectorEffect === 'non-scaling-stroke';\n}());\n\nlet supportsNativeSVGTransformLists_ = (function () {\nconst rect = document.createElementNS(NS.SVG, 'rect');\nconst rxform = rect.transform.baseVal;\nconst t1 = svg.createSVGTransform();\nrxform.appendItem(t1);\nconst r1 = rxform.getItem(0);\n// Todo: Do frame-independent instance checking\nreturn r1 instanceof SVGTransform && t1 instanceof SVGTransform &&\n  r1.type === t1.type && r1.angle === t1.angle &&\n  r1.matrix.a === t1.matrix.a &&\n  r1.matrix.b === t1.matrix.b &&\n  r1.matrix.c === t1.matrix.c &&\n  r1.matrix.d === t1.matrix.d &&\n  r1.matrix.e === t1.matrix.e &&\n  r1.matrix.f === t1.matrix.f;\n}());\n\n// Public API\n\n/**\n * @function module:browser.isOpera\n * @returns {boolean}\n*/\nexport const isOpera = () => isOpera_;\n/**\n * @function module:browser.isWebkit\n * @returns {boolean}\n*/\nexport const isWebkit = () => isWebkit_;\n/**\n * @function module:browser.isGecko\n * @returns {boolean}\n*/\nexport const isGecko = () => isGecko_;\n/**\n * @function module:browser.isIE\n * @returns {boolean}\n*/\nexport const isIE = () => isIE_;\n/**\n * @function module:browser.isChrome\n * @returns {boolean}\n*/\nexport const isChrome = () => isChrome_;\n/**\n * @function module:browser.isWindows\n * @returns {boolean}\n*/\nexport const isWindows = () => isWindows_;\n/**\n * @function module:browser.isMac\n * @returns {boolean}\n*/\nexport const isMac = () => isMac_;\n/**\n * @function module:browser.isTouch\n * @returns {boolean}\n*/\nexport const isTouch = () => isTouch_;\n\n/**\n * @function module:browser.supportsSelectors\n * @returns {boolean}\n*/\nexport const supportsSelectors = () => supportsSelectors_;\n\n/**\n * @function module:browser.supportsXpath\n * @returns {boolean}\n*/\nexport const supportsXpath = () => supportsXpath_;\n\n/**\n * @function module:browser.supportsPathReplaceItem\n * @returns {boolean}\n*/\nexport const supportsPathReplaceItem = () => supportsPathReplaceItem_;\n\n/**\n * @function module:browser.supportsPathInsertItemBefore\n * @returns {boolean}\n*/\nexport const supportsPathInsertItemBefore = () => supportsPathInsertItemBefore_;\n\n/**\n * @function module:browser.supportsPathBBox\n * @returns {boolean}\n*/\nexport const supportsPathBBox = () => supportsPathBBox_;\n\n/**\n * @function module:browser.supportsHVLineContainerBBox\n * @returns {boolean}\n*/\nexport const supportsHVLineContainerBBox = () => supportsHVLineContainerBBox_;\n\n/**\n * @function module:browser.supportsGoodTextCharPos\n * @returns {boolean}\n*/\nexport const supportsGoodTextCharPos = () => supportsGoodTextCharPos_;\n\n/**\n* @function module:browser.supportsEditableText\n * @returns {boolean}\n*/\nexport const supportsEditableText = () => supportsEditableText_;\n\n/**\n * @function module:browser.supportsGoodDecimals\n * @returns {boolean}\n*/\nexport const supportsGoodDecimals = () => supportsGoodDecimals_;\n\n/**\n* @function module:browser.supportsNonScalingStroke\n* @returns {boolean}\n*/\nexport const supportsNonScalingStroke = () => supportsNonScalingStroke_;\n\n/**\n* @function module:browser.supportsNativeTransformLists\n* @returns {boolean}\n*/\nexport const supportsNativeTransformLists = () => supportsNativeSVGTransformLists_;\n\n/**\n * Set `supportsNativeSVGTransformLists_` to `false` (for unit testing).\n * @function module:browser.disableSupportsNativeTransformLists\n * @returns {undefined}\n*/\nexport const disableSupportsNativeTransformLists = () => {\n  supportsNativeSVGTransformLists_ = false;\n};\n","/**\n * jQuery module to work with SVG attributes\n * @module jQueryAttr\n * @license MIT\n */\n\n/**\n* This fixes `$(...).attr()` to work as expected with SVG elements.\n* Does not currently use `*AttributeNS()` since we rarely need that.\n* Adds {@link external:jQuery.fn.attr}.\n* See {@link https://api.jquery.com/attr/} for basic documentation of `.attr()`.\n*\n* Additional functionality:\n* - When getting attributes, a string that's a number is returned as type number.\n* - If an array is supplied as the first parameter, multiple values are returned\n*    as an object with values for each given attribute.\n* @function module:jQueryAttr.jQueryAttr\n* @param {external:jQuery} $ The jQuery object to which to add the plug-in\n* @returns {external:jQuery}\n*/\nexport default function jQueryPluginSVG ($) {\n  const proxied = $.fn.attr,\n    svgns = 'http://www.w3.org/2000/svg';\n  /**\n  * @typedef {PlainObject.<string, string|Float>} module:jQueryAttr.Attributes\n  */\n  /**\n  * @function external:jQuery.fn.attr\n  * @param {string|string[]|PlainObject.<string, string>} key\n  * @param {string} value\n  * @returns {external:jQuery|module:jQueryAttr.Attributes}\n  */\n  $.fn.attr = function (key, value) {\n    const len = this.length;\n    if (!len) { return proxied.call(this, key, value); }\n    for (let i = 0; i < len; ++i) {\n      const elem = this[i];\n      // set/get SVG attribute\n      if (elem.namespaceURI === svgns) {\n        // Setting attribute\n        if (value !== undefined) {\n          elem.setAttribute(key, value);\n        } else if (Array.isArray(key)) {\n          // Getting attributes from array\n          const obj = {};\n          let j = key.length;\n\n          while (j--) {\n            const aname = key[j];\n            let attr = elem.getAttribute(aname);\n            // This returns a number when appropriate\n            if (attr || attr === '0') {\n              attr = isNaN(attr) ? attr : (attr - 0);\n            }\n            obj[aname] = attr;\n          }\n          return obj;\n        }\n        if (typeof key === 'object') {\n          // Setting attributes from object\n          for (const [name, val] of Object.entries(key)) {\n            elem.setAttribute(name, val);\n          }\n        // Getting attribute\n        } else {\n          let attr = elem.getAttribute(key);\n          if (attr || attr === '0') {\n            attr = isNaN(attr) ? attr : (attr - 0);\n          }\n          return attr;\n        }\n      } else {\n        return proxied.call(this, key, value);\n      }\n    }\n    return this;\n  };\n  return $;\n}\n","/**\n * Partial polyfill of `SVGTransformList`\n * @module SVGTransformList\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\nimport {supportsNativeTransformLists} from './browser.js';\n\nconst svgroot = document.createElementNS(NS.SVG, 'svg');\n\n/**\n * Helper function to convert `SVGTransform` to a string.\n * @param {SVGTransform} xform\n * @returns {string}\n */\nfunction transformToString (xform) {\n  const m = xform.matrix;\n  let text = '';\n  switch (xform.type) {\n  case 1: // MATRIX\n    text = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n    break;\n  case 2: // TRANSLATE\n    text = 'translate(' + m.e + ',' + m.f + ')';\n    break;\n  case 3: // SCALE\n    if (m.a === m.d) {\n      text = 'scale(' + m.a + ')';\n    } else {\n      text = 'scale(' + m.a + ',' + m.d + ')';\n    }\n    break;\n  case 4: { // ROTATE\n    let cx = 0;\n    let cy = 0;\n    // this prevents divide by zero\n    if (xform.angle !== 0) {\n      const K = 1 - m.a;\n      cy = (K * m.f + m.b * m.e) / (K * K + m.b * m.b);\n      cx = (m.e - m.b * cy) / K;\n    }\n    text = 'rotate(' + xform.angle + ' ' + cx + ',' + cy + ')';\n    break;\n  }\n  }\n  return text;\n}\n\n/**\n * Map of SVGTransformList objects.\n */\nlet listMap_ = {};\n\n/**\n* @interface module:SVGTransformList.SVGEditTransformList\n* @property {Integer} numberOfItems unsigned long\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#clear\n* @returns {undefined}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#initialize\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#getItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#insertItemBefore\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#replaceItem\n* @param {SVGTransform} newItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* (DOES NOT THROW DOMException, INDEX_SIZE_ERR)\n* @function module:SVGTransformList.SVGEditTransformList#removeItem\n* @param {Integer} index unsigned long\n* @returns {SVGTransform}\n*/\n/**\n* @function module:SVGTransformList.SVGEditTransformList#appendItem\n* @param {SVGTransform} newItem\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#createSVGTransformFromMatrix\n* @param {SVGMatrix} matrix\n* @returns {SVGTransform}\n*/\n/**\n* NOT IMPLEMENTED\n* @ignore\n* @function module:SVGTransformList.SVGEditTransformList#consolidate\n* @returns {SVGTransform}\n*/\n\n/**\n* SVGTransformList implementation for Webkit.\n* These methods do not currently raise any exceptions.\n* These methods also do not check that transforms are being inserted.  This is basically\n* implementing as much of SVGTransformList that we need to get the job done.\n* @implements {module:SVGTransformList.SVGEditTransformList}\n*/\nexport class SVGTransformList {// eslint-disable-line no-shadow\n  /**\n  * @param {Element} elem\n  */\n  constructor (elem) {\n    this._elem = elem || null;\n    this._xforms = [];\n    // TODO: how do we capture the undo-ability in the changed transform list?\n    this._update = function () {\n      let tstr = '';\n      // /* const concatMatrix = */ svgroot.createSVGMatrix();\n      for (let i = 0; i < this.numberOfItems; ++i) {\n        const xform = this._list.getItem(i);\n        tstr += transformToString(xform) + ' ';\n      }\n      this._elem.setAttribute('transform', tstr);\n    };\n    this._list = this;\n    this._init = function () {\n      // Transform attribute parser\n      let str = this._elem.getAttribute('transform');\n      if (!str) { return; }\n\n      // TODO: Add skew support in future\n      const re = /\\s*((scale|matrix|rotate|translate)\\s*\\(.*?\\))\\s*,?\\s*/;\n      let m = true;\n      while (m) {\n        m = str.match(re);\n        str = str.replace(re, '');\n        if (m && m[1]) {\n          const x = m[1];\n          const bits = x.split(/\\s*\\(/);\n          const name = bits[0];\n          const valBits = bits[1].match(/\\s*(.*?)\\s*\\)/);\n          valBits[1] = valBits[1].replace(/(\\d)-/g, '$1 -');\n          const valArr = valBits[1].split(/[, ]+/);\n          const letters = 'abcdef'.split('');\n          const mtx = svgroot.createSVGMatrix();\n          Object.values(valArr).forEach(function (item, i) {\n            valArr[i] = parseFloat(item);\n            if (name === 'matrix') {\n              mtx[letters[i]] = valArr[i];\n            }\n          });\n          const xform = svgroot.createSVGTransform();\n          const fname = 'set' + name.charAt(0).toUpperCase() + name.slice(1);\n          const values = name === 'matrix' ? [mtx] : valArr;\n\n          if (name === 'scale' && values.length === 1) {\n            values.push(values[0]);\n          } else if (name === 'translate' && values.length === 1) {\n            values.push(0);\n          } else if (name === 'rotate' && values.length === 1) {\n            values.push(0, 0);\n          }\n          xform[fname](...values);\n          this._list.appendItem(xform);\n        }\n      }\n    };\n    this._removeFromOtherLists = function (item) {\n      if (item) {\n        // Check if this transform is already in a transformlist, and\n        // remove it if so.\n        Object.values(listMap_).some((tl) => {\n          for (let i = 0, len = tl._xforms.length; i < len; ++i) {\n            if (tl._xforms[i] === item) {\n              tl.removeItem(i);\n              return true;\n            }\n          }\n          return false;\n        });\n      }\n    };\n\n    this.numberOfItems = 0;\n  }\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    this.numberOfItems = 0;\n    this._xforms = [];\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  initialize (newItem) {\n    this.numberOfItems = 1;\n    this._removeFromOtherLists(newItem);\n    this._xforms = [newItem];\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  getItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      return this._xforms[index];\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  insertItemBefore (newItem, index) {\n    let retValue = null;\n    if (index >= 0) {\n      if (index < this.numberOfItems) {\n        this._removeFromOtherLists(newItem);\n        const newxforms = new Array(this.numberOfItems + 1);\n        // TODO: use array copying and slicing\n        let i;\n        for (i = 0; i < index; ++i) {\n          newxforms[i] = this._xforms[i];\n        }\n        newxforms[i] = newItem;\n        for (let j = i + 1; i < this.numberOfItems; ++j, ++i) {\n          newxforms[j] = this._xforms[i];\n        }\n        this.numberOfItems++;\n        this._xforms = newxforms;\n        retValue = newItem;\n        this._list._update();\n      } else {\n        retValue = this._list.appendItem(newItem);\n      }\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @param {Integer} index unsigned long\n  * @returns {SVGTransform}\n  */\n  replaceItem (newItem, index) {\n    let retValue = null;\n    if (index < this.numberOfItems && index >= 0) {\n      this._removeFromOtherLists(newItem);\n      this._xforms[index] = newItem;\n      retValue = newItem;\n      this._list._update();\n    }\n    return retValue;\n  }\n\n  /**\n  * @param {Integer} index unsigned long\n  * @throws {Error}\n  * @returns {SVGTransform}\n  */\n  removeItem (index) {\n    if (index < this.numberOfItems && index >= 0) {\n      const retValue = this._xforms[index];\n      const newxforms = new Array(this.numberOfItems - 1);\n      let i;\n      for (i = 0; i < index; ++i) {\n        newxforms[i] = this._xforms[i];\n      }\n      for (let j = i; j < this.numberOfItems - 1; ++j, ++i) {\n        newxforms[j] = this._xforms[i + 1];\n      }\n      this.numberOfItems--;\n      this._xforms = newxforms;\n      this._list._update();\n      return retValue;\n    }\n    const err = new Error('DOMException with code=INDEX_SIZE_ERR');\n    err.code = 1;\n    throw err;\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {SVGTransform}\n  */\n  appendItem (newItem) {\n    this._removeFromOtherLists(newItem);\n    this._xforms.push(newItem);\n    this.numberOfItems++;\n    this._list._update();\n    return newItem;\n  }\n}\n\n/**\n* @function module:SVGTransformList.resetListMap\n* @returns {undefined}\n*/\nexport const resetListMap = function () {\n  listMap_ = {};\n};\n\n/**\n * Removes transforms of the given element from the map.\n * @function module:SVGTransformList.removeElementFromListMap\n * @param {Element} elem - a DOM Element\n * @returns {undefined}\n */\nexport let removeElementFromListMap = function (elem) { // eslint-disable-line import/no-mutable-exports\n  if (elem.id && listMap_[elem.id]) {\n    delete listMap_[elem.id];\n  }\n};\n\n/**\n* Returns an object that behaves like a `SVGTransformList` for the given DOM element.\n* @function module:SVGTransformList.getTransformList\n* @param {Element} elem - DOM element to get a transformlist from\n* @todo The polyfill should have `SVGAnimatedTransformList` and this should use it\n* @returns {SVGAnimatedTransformList|SVGTransformList}\n*/\nexport const getTransformList = function (elem) {\n  if (!supportsNativeTransformLists()) {\n    const id = elem.id || 'temp';\n    let t = listMap_[id];\n    if (!t || id === 'temp') {\n      listMap_[id] = new SVGTransformList(elem);\n      listMap_[id]._init();\n      t = listMap_[id];\n    }\n    return t;\n  }\n  if (elem.transform) {\n    return elem.transform.baseVal;\n  }\n  if (elem.gradientTransform) {\n    return elem.gradientTransform.baseVal;\n  }\n  if (elem.patternTransform) {\n    return elem.patternTransform.baseVal;\n  }\n\n  return null;\n};\n\n/**\n* @callback module:SVGTransformList.removeElementFromListMap\n* @param {Element} elem\n*/\n/**\n* Replace `removeElementFromListMap` for unit-testing.\n* @function module:SVGTransformList.changeRemoveElementFromListMap\n* @param {module:SVGTransformList.removeElementFromListMap} cb Passed a single argument `elem`\n* @returns {undefined}\n*/\n\nexport const changeRemoveElementFromListMap = function (cb) { // eslint-disable-line promise/prefer-await-to-callbacks\n  removeElementFromListMap = cb;\n};\n","/**\n * Tools for working with units\n * @module units\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {NS} from './namespaces.js';\nimport {isNullish} from './utilities.js';\n\nconst wAttrs = ['x', 'x1', 'cx', 'rx', 'width'];\nconst hAttrs = ['y', 'y1', 'cy', 'ry', 'height'];\nconst unitAttrs = ['r', 'radius', ...wAttrs, ...hAttrs];\n// unused\n/*\nconst unitNumMap = {\n  '%': 2,\n  em: 3,\n  ex: 4,\n  px: 5,\n  cm: 6,\n  mm: 7,\n  in: 8,\n  pt: 9,\n  pc: 10\n};\n*/\n// Container of elements.\nlet elementContainer_;\n\n// Stores mapping of unit type to user coordinates.\nlet typeMap_ = {};\n\n/**\n * @interface module:units.ElementContainer\n */\n/**\n * @function module:units.ElementContainer#getBaseUnit\n * @returns {string} The base unit type of the container ('em')\n */\n/**\n * @function module:units.ElementContainer#getElement\n * @returns {?Element} An element in the container given an id\n */\n/**\n * @function module:units.ElementContainer#getHeight\n * @returns {Float} The container's height\n */\n/**\n * @function module:units.ElementContainer#getWidth\n * @returns {Float} The container's width\n */\n/**\n * @function module:units.ElementContainer#getRoundDigits\n * @returns {Integer} The number of digits number should be rounded to\n */\n\n/**\n * @typedef {PlainObject} module:units.TypeMap\n * @property {Float} em\n * @property {Float} ex\n * @property {Float} in\n * @property {Float} cm\n * @property {Float} mm\n * @property {Float} pt\n * @property {Float} pc\n * @property {Integer} px\n * @property {0} %\n */\n\n/**\n * Initializes this module.\n *\n * @function module:units.init\n * @param {module:units.ElementContainer} elementContainer - An object implementing the ElementContainer interface.\n * @returns {undefined}\n */\nexport const init = function (elementContainer) {\n  elementContainer_ = elementContainer;\n\n  // Get correct em/ex values by creating a temporary SVG.\n  const svg = document.createElementNS(NS.SVG, 'svg');\n  document.body.append(svg);\n  const rect = document.createElementNS(NS.SVG, 'rect');\n  rect.setAttribute('width', '1em');\n  rect.setAttribute('height', '1ex');\n  rect.setAttribute('x', '1in');\n  svg.append(rect);\n  const bb = rect.getBBox();\n  svg.remove();\n\n  const inch = bb.x;\n  typeMap_ = {\n    em: bb.width,\n    ex: bb.height,\n    in: inch,\n    cm: inch / 2.54,\n    mm: inch / 25.4,\n    pt: inch / 72,\n    pc: inch / 6,\n    px: 1,\n    '%': 0\n  };\n};\n\n/**\n* Group: Unit conversion functions\n*/\n\n/**\n * @function module:units.getTypeMap\n * @returns {module:units.TypeMap} The unit object with values for each unit\n*/\nexport const getTypeMap = function () {\n  return typeMap_;\n};\n\n/**\n* @typedef {GenericArray} module:units.CompareNumbers\n* @property {Integer} length 2\n* @property {Float} 0\n* @property {Float} 1\n*/\n\n/**\n* Rounds a given value to a float with number of digits defined in\n* `round_digits` of `saveOptions`\n*\n* @function module:units.shortFloat\n* @param {string|Float|module:units.CompareNumbers} val - The value (or Array of two numbers) to be rounded\n* @returns {Float|string} If a string/number was given, returns a Float. If an array, return a string\n* with comma-separated floats\n*/\nexport const shortFloat = function (val) {\n  const digits = elementContainer_.getRoundDigits();\n  if (!isNaN(val)) {\n    return Number(Number(val).toFixed(digits));\n  }\n  if (Array.isArray(val)) {\n    return shortFloat(val[0]) + ',' + shortFloat(val[1]);\n  }\n  return parseFloat(val).toFixed(digits) - 0;\n};\n\n/**\n* Converts the number to given unit or baseUnit.\n* @function module:units.convertUnit\n* @param {string|Float} val\n* @param {\"em\"|\"ex\"|\"in\"|\"cm\"|\"mm\"|\"pt\"|\"pc\"|\"px\"|\"%\"} [unit]\n* @returns {Float}\n*/\nexport const convertUnit = function (val, unit) {\n  unit = unit || elementContainer_.getBaseUnit();\n  // baseVal.convertToSpecifiedUnits(unitNumMap[unit]);\n  // const val = baseVal.valueInSpecifiedUnits;\n  // baseVal.convertToSpecifiedUnits(1);\n  return shortFloat(val / typeMap_[unit]);\n};\n\n/**\n* Sets an element's attribute based on the unit in its current value.\n*\n* @function module:units.setUnitAttr\n* @param {Element} elem - DOM element to be changed\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {undefined}\n*/\nexport const setUnitAttr = function (elem, attr, val) {\n  //  if (!isNaN(val)) {\n  // New value is a number, so check currently used unit\n  // const oldVal = elem.getAttribute(attr);\n\n  // Enable this for alternate mode\n  // if (oldVal !== null && (isNaN(oldVal) || elementContainer_.getBaseUnit() !== 'px')) {\n  //   // Old value was a number, so get unit, then convert\n  //   let unit;\n  //   if (oldVal.substr(-1) === '%') {\n  //     const res = getResolution();\n  //     unit = '%';\n  //     val *= 100;\n  //     if (wAttrs.includes(attr)) {\n  //       val = val / res.w;\n  //     } else if (hAttrs.includes(attr)) {\n  //       val = val / res.h;\n  //     } else {\n  //       return val / Math.sqrt((res.w*res.w) + (res.h*res.h))/Math.sqrt(2);\n  //     }\n  //   } else {\n  //     if (elementContainer_.getBaseUnit() !== 'px') {\n  //       unit = elementContainer_.getBaseUnit();\n  //     } else {\n  //       unit = oldVal.substr(-2);\n  //     }\n  //     val = val / typeMap_[unit];\n  //   }\n  //\n  // val += unit;\n  // }\n  // }\n  elem.setAttribute(attr, val);\n};\n\nconst attrsToConvert = {\n  line: ['x1', 'x2', 'y1', 'y2'],\n  circle: ['cx', 'cy', 'r'],\n  ellipse: ['cx', 'cy', 'rx', 'ry'],\n  foreignObject: ['x', 'y', 'width', 'height'],\n  rect: ['x', 'y', 'width', 'height'],\n  image: ['x', 'y', 'width', 'height'],\n  use: ['x', 'y', 'width', 'height'],\n  text: ['x', 'y']\n};\n\n/**\n* Converts all applicable attributes to the configured baseUnit.\n* @function module:units.convertAttrs\n* @param {Element} element - A DOM element whose attributes should be converted\n* @returns {undefined}\n*/\nexport const convertAttrs = function (element) {\n  const elName = element.tagName;\n  const unit = elementContainer_.getBaseUnit();\n  const attrs = attrsToConvert[elName];\n  if (!attrs) { return; }\n\n  const len = attrs.length;\n  for (let i = 0; i < len; i++) {\n    const attr = attrs[i];\n    const cur = element.getAttribute(attr);\n    if (cur) {\n      if (!isNaN(cur)) {\n        element.setAttribute(attr, (cur / typeMap_[unit]) + unit);\n      }\n      // else {\n      // Convert existing?\n      // }\n    }\n  }\n};\n\n/**\n* Converts given values to numbers. Attributes must be supplied in\n* case a percentage is given.\n*\n* @function module:units.convertToNum\n* @param {string} attr - Name of the attribute associated with the value\n* @param {string} val - Attribute value to convert\n* @returns {Float} The converted number\n*/\nexport const convertToNum = function (attr, val) {\n  // Return a number if that's what it already is\n  if (!isNaN(val)) { return val - 0; }\n  if (val.substr(-1) === '%') {\n    // Deal with percentage, depends on attribute\n    const num = val.substr(0, val.length - 1) / 100;\n    const width = elementContainer_.getWidth();\n    const height = elementContainer_.getHeight();\n\n    if (wAttrs.includes(attr)) {\n      return num * width;\n    }\n    if (hAttrs.includes(attr)) {\n      return num * height;\n    }\n    return num * Math.sqrt((width * width) + (height * height)) / Math.sqrt(2);\n  }\n  const unit = val.substr(-2);\n  const num = val.substr(0, val.length - 2);\n  // Note that this multiplication turns the string into a number\n  return num * typeMap_[unit];\n};\n\n/**\n* Check if an attribute's value is in a valid format.\n* @function module:units.isValidUnit\n* @param {string} attr - The name of the attribute associated with the value\n* @param {string} val - The attribute value to check\n* @param {Element} selectedElement\n* @returns {boolean} Whether the unit is valid\n*/\nexport const isValidUnit = function (attr, val, selectedElement) {\n  if (unitAttrs.includes(attr)) {\n    // True if it's just a number\n    if (!isNaN(val)) {\n      return true;\n    }\n    // Not a number, check if it has a valid unit\n    val = val.toLowerCase();\n    return Object.keys(typeMap_).some((unit) => {\n      const re = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n      return re.test(val);\n    });\n  }\n  if (attr === 'id') {\n    // if we're trying to change the id, make sure it's not already present in the doc\n    // and the id value is valid.\n\n    let result = false;\n    // because getElem() can throw an exception in the case of an invalid id\n    // (according to https://www.w3.org/TR/xml-id/ IDs must be a NCName)\n    // we wrap it in an exception and only return true if the ID was valid and\n    // not already present\n    try {\n      const elem = elementContainer_.getElement(val);\n      result = (isNullish(elem) || elem === selectedElement);\n    } catch (e) {}\n    return result;\n  }\n  return true;\n};\n","/**\n * For command history tracking and undo functionality\n * @module history\n * @license MIT\n * @copyright 2010 Jeff Schiller\n */\n\nimport {getHref, setHref, getRotationAngle, isNullish} from './utilities.js';\nimport {removeElementFromListMap} from './svgtransformlist.js';\n\n/**\n* Group: Undo/Redo history management\n*/\nexport const HistoryEventTypes = {\n  BEFORE_APPLY: 'before_apply',\n  AFTER_APPLY: 'after_apply',\n  BEFORE_UNAPPLY: 'before_unapply',\n  AFTER_UNAPPLY: 'after_unapply'\n};\n\n// const removedElements = {};\n\n/**\n* Base class for commands.\n*/\nclass Command {\n  /**\n  * @returns {string}\n  */\n  getText () {\n    return this.text;\n  }\n}\n\n// Todo: Figure out why the interface members aren't showing\n//   up (with or without modules applied), despite our apparently following\n//   http://usejsdoc.org/tags-interface.html#virtual-comments\n\n/**\n * An interface that all command objects must implement.\n * @interface module:history.HistoryCommand\n*/\n/**\n * Applies\n *\n * @function module:history.HistoryCommand#apply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n *\n * Unapplies\n * @function module:history.HistoryCommand#unapply\n * @param {module:history.HistoryEventHandler}\n * @fires module:history~Command#event:history\n * @returns {undefined|true}\n */\n/**\n * Returns the elements\n * @function module:history.HistoryCommand#elements\n * @returns {Element[]}\n */\n/**\n * Gets the text\n * @function module:history.HistoryCommand#getText\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand.type\n * @returns {string}\n */\n/**\n * Gives the type\n * @function module:history.HistoryCommand#type\n * @returns {string}\n*/\n\n/**\n * @event module:history~Command#event:history\n * @type {module:history.HistoryCommand}\n */\n\n/**\n * An interface for objects that will handle history events.\n * @interface module:history.HistoryEventHandler\n */\n/**\n *\n * @function module:history.HistoryEventHandler#handleHistoryEvent\n * @param {string} eventType One of the HistoryEvent types\n * @param {module:history~Command#event:history} command\n * @listens module:history~Command#event:history\n * @returns {undefined}\n *\n */\n\n/**\n * History command for an element that had its DOM position changed.\n * @implements {module:history.HistoryCommand}\n * @param {Element} elem - The DOM element that was moved\n * @param {Element} oldNextSibling - The element's next sibling before it was moved\n * @param {Element} oldParent - The element's parent before it was moved\n * @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class MoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Move ' + elem.tagName + ' to ' + text) : ('Move ' + elem.tagName);\n    this.oldNextSibling = oldNextSibling;\n    this.oldParent = oldParent;\n    this.newNextSibling = elem.nextSibling;\n    this.newParent = elem.parentNode;\n  }\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.MoveElementCommand';\n  }\n\n  /**\n   * Re-positions the element.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  apply (handler) {\n    // TODO(codedread): Refactor this common event code into a base HistoryCommand class.\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n   * Positions the element back to its original location.\n   * @param {module:history.HistoryEventHandler} handler\n   * @fires module:history~Command#event:history\n   * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nMoveElementCommand.type = MoveElementCommand.prototype.type;\n\n/**\n* History command for an element that was added to the DOM.\n* @implements {module:history.HistoryCommand}\n*\n* @param {Element} elem - The newly added DOM element\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class InsertElementCommand extends Command {\n  constructor (elem, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Create ' + elem.tagName);\n    this.parent = elem.parentNode;\n    this.nextSibling = this.elem.nextSibling;\n  }\n\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.InsertElementCommand';\n  }\n\n  /**\n  * Re-inserts the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    this.elem = this.parent.insertBefore(this.elem, this.nextSibling);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Removes the element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    this.parent = this.elem.parentNode;\n    this.elem = this.elem.parentNode.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nInsertElementCommand.type = InsertElementCommand.prototype.type;\n\n/**\n* History command for an element removed from the DOM.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The removed DOM element\n* @param {Node} oldNextSibling - The DOM element's nextSibling when it was in the DOM\n* @param {Element} oldParent - The DOM element's parent\n* @param {string} [text] - An optional string visible to user related to this change\n*/\nexport class RemoveElementCommand extends Command {\n  constructor (elem, oldNextSibling, oldParent, text) {\n    super();\n    this.elem = elem;\n    this.text = text || ('Delete ' + elem.tagName);\n    this.nextSibling = oldNextSibling;\n    this.parent = oldParent;\n\n    // special hack for webkit: remove this element's entry in the svgTransformLists map\n    removeElementFromListMap(elem);\n  }\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.RemoveElementCommand';\n  }\n\n  /**\n  * Re-removes the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    this.parent = this.elem.parentNode;\n    this.elem = this.parent.removeChild(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Re-adds the new element.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    removeElementFromListMap(this.elem);\n    if (isNullish(this.nextSibling)) {\n      if (window.console) {\n        console.log('Error: reference element was lost'); // eslint-disable-line no-console\n      }\n    }\n    this.parent.insertBefore(this.elem, this.nextSibling); // Don't use `before` or `prepend` as `this.nextSibling` may be `null`\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nRemoveElementCommand.type = RemoveElementCommand.prototype.type;\n\n/**\n* @typedef {\"#text\"|\"#href\"|string} module:history.CommandAttributeName\n*/\n/**\n* @typedef {PlainObject.<module:history.CommandAttributeName, string>} module:history.CommandAttributes\n*/\n\n/**\n* History command to make a change to an element.\n* Usually an attribute change, but can also be textcontent.\n* @implements {module:history.HistoryCommand}\n* @param {Element} elem - The DOM element that was changed\n* @param {module:history.CommandAttributes} attrs - Attributes to be changed with the values they had *before* the change\n* @param {string} text - An optional string visible to user related to this change\n*/\nexport class ChangeElementCommand extends Command {\n  constructor (elem, attrs, text) {\n    super();\n    this.elem = elem;\n    this.text = text ? ('Change ' + elem.tagName + ' ' + text) : ('Change ' + elem.tagName);\n    this.newValues = {};\n    this.oldValues = attrs;\n    for (const attr in attrs) {\n      if (attr === '#text') {\n        this.newValues[attr] = elem.textContent;\n      } else if (attr === '#href') {\n        this.newValues[attr] = getHref(elem);\n      } else {\n        this.newValues[attr] = elem.getAttribute(attr);\n      }\n    }\n  }\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.ChangeElementCommand';\n  }\n\n  /**\n  * Performs the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    let bChangedTransform = false;\n    Object.entries(this.newValues).forEach(([attr, value]) => {\n      if (value) {\n        if (attr === '#text') {\n          this.elem.textContent = value;\n        } else if (attr === '#href') {\n          setHref(this.elem, value);\n        } else {\n          this.elem.setAttribute(attr, value);\n        }\n      } else if (attr === '#text') {\n        this.elem.textContent = '';\n      } else {\n        this.elem.setAttribute(attr, '');\n        this.elem.removeAttribute(attr);\n      }\n\n      if (attr === 'transform') { bChangedTransform = true; }\n    });\n\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * Reverses the stored change action.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {true}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    let bChangedTransform = false;\n    Object.entries(this.oldValues).forEach(([attr, value]) => {\n      if (value) {\n        if (attr === '#text') {\n          this.elem.textContent = value;\n        } else if (attr === '#href') {\n          setHref(this.elem, value);\n        } else {\n          this.elem.setAttribute(attr, value);\n        }\n      } else if (attr === '#text') {\n        this.elem.textContent = '';\n      } else {\n        this.elem.removeAttribute(attr);\n      }\n      if (attr === 'transform') { bChangedTransform = true; }\n    });\n    // relocate rotational transform, if necessary\n    if (!bChangedTransform) {\n      const angle = getRotationAngle(this.elem);\n      if (angle) {\n        const bbox = this.elem.getBBox();\n        const cx = bbox.x + bbox.width / 2,\n          cy = bbox.y + bbox.height / 2;\n        const rotate = ['rotate(', angle, ' ', cx, ',', cy, ')'].join('');\n        if (rotate !== this.elem.getAttribute('transform')) {\n          this.elem.setAttribute('transform', rotate);\n        }\n      }\n    }\n\n    // Remove transformlist to prevent confusion that causes bugs like 575.\n    removeElementFromListMap(this.elem);\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n\n    return true;\n  }\n\n  /**\n  * @returns {Element[]} Array with element associated with this command\n  */\n  elements () {\n    return [this.elem];\n  }\n}\nChangeElementCommand.type = ChangeElementCommand.prototype.type;\n\n// TODO: create a 'typing' command object that tracks changes in text\n// if a new Typing command is created and the top command on the stack is also a Typing\n// and they both affect the same element, then collapse the two commands into one\n\n/**\n* History command that can contain/execute multiple other commands.\n* @implements {module:history.HistoryCommand}\n*/\nexport class BatchCommand extends Command {\n  /**\n  * @param {string} [text] - An optional string visible to user related to this change\n  */\n  constructor (text) {\n    super();\n    this.text = text || 'Batch Command';\n    this.stack = [];\n  }\n\n  type () { // eslint-disable-line class-methods-use-this\n    return 'svgedit.history.BatchCommand';\n  }\n\n  /**\n  * Runs \"apply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  apply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);\n    }\n\n    const len = this.stack.length;\n    for (let i = 0; i < len; ++i) {\n      this.stack[i].apply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_APPLY, this);\n    }\n  }\n\n  /**\n  * Runs \"unapply\" on all subcommands.\n  * @param {module:history.HistoryEventHandler} handler\n  * @fires module:history~Command#event:history\n  * @returns {undefined}\n  */\n  unapply (handler) {\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);\n    }\n\n    for (let i = this.stack.length - 1; i >= 0; i--) {\n      this.stack[i].unapply(handler);\n    }\n\n    if (handler) {\n      handler.handleHistoryEvent(HistoryEventTypes.AFTER_UNAPPLY, this);\n    }\n  }\n\n  /**\n  * Iterate through all our subcommands.\n  * @returns {Element[]} All the elements we are changing\n  */\n  elements () {\n    const elems = [];\n    let cmd = this.stack.length;\n    while (cmd--) {\n      const thisElems = this.stack[cmd].elements();\n      let elem = thisElems.length;\n      while (elem--) {\n        if (!elems.includes(thisElems[elem])) { elems.push(thisElems[elem]); }\n      }\n    }\n    return elems;\n  }\n\n  /**\n  * Adds a given command to the history stack.\n  * @param {Command} cmd - The undo command object to add\n  * @returns {undefined}\n  */\n  addSubCommand (cmd) {\n    this.stack.push(cmd);\n  }\n\n  /**\n  * @returns {boolean} Indicates whether or not the batch command is empty\n  */\n  isEmpty () {\n    return !this.stack.length;\n  }\n}\nBatchCommand.type = BatchCommand.prototype.type;\n\n/**\n*\n*/\nexport class UndoManager {\n  /**\n  * @param {module:history.HistoryEventHandler} historyEventHandler\n  */\n  constructor (historyEventHandler) {\n    this.handler_ = historyEventHandler || null;\n    this.undoStackPointer = 0;\n    this.undoStack = [];\n\n    // this is the stack that stores the original values, the elements and\n    // the attribute name for begin/finish\n    this.undoChangeStackPointer = -1;\n    this.undoableChangeStack = [];\n  }\n\n  /**\n  * Resets the undo stack, effectively clearing the undo/redo history.\n  * @returns {undefined}\n  */\n  resetUndoStack () {\n    this.undoStack = [];\n    this.undoStackPointer = 0;\n  }\n\n  /**\n  * @returns {Integer} Current size of the undo history stack\n  */\n  getUndoStackSize () {\n    return this.undoStackPointer;\n  }\n\n  /**\n  * @returns {Integer} Current size of the redo history stack\n  */\n  getRedoStackSize () {\n    return this.undoStack.length - this.undoStackPointer;\n  }\n\n  /**\n  * @returns {string} String associated with the next undo command\n  */\n  getNextUndoCommandText () {\n    return this.undoStackPointer > 0 ? this.undoStack[this.undoStackPointer - 1].getText() : '';\n  }\n\n  /**\n  * @returns {string} String associated with the next redo command\n  */\n  getNextRedoCommandText () {\n    return this.undoStackPointer < this.undoStack.length ? this.undoStack[this.undoStackPointer].getText() : '';\n  }\n\n  /**\n  * Performs an undo step.\n  * @returns {undefined}\n  */\n  undo () {\n    if (this.undoStackPointer > 0) {\n      const cmd = this.undoStack[--this.undoStackPointer];\n      cmd.unapply(this.handler_);\n    }\n  }\n\n  /**\n  * Performs a redo step.\n  * @returns {undefined}\n  */\n  redo () {\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      const cmd = this.undoStack[this.undoStackPointer++];\n      cmd.apply(this.handler_);\n    }\n  }\n\n  /**\n  * Adds a command object to the undo history stack.\n  * @param {Command} cmd - The command object to add\n  * @returns {undefined}\n  */\n  addCommandToHistory (cmd) {\n    // FIXME: we MUST compress consecutive text changes to the same element\n    // (right now each keystroke is saved as a separate command that includes the\n    // entire text contents of the text element)\n    // TODO: consider limiting the history that we store here (need to do some slicing)\n\n    // if our stack pointer is not at the end, then we have to remove\n    // all commands after the pointer and insert the new command\n    if (this.undoStackPointer < this.undoStack.length && this.undoStack.length > 0) {\n      this.undoStack = this.undoStack.splice(0, this.undoStackPointer);\n    }\n    this.undoStack.push(cmd);\n    this.undoStackPointer = this.undoStack.length;\n  }\n\n  /**\n  * This function tells the canvas to remember the old values of the\n  * `attrName` attribute for each element sent in.  The elements and values\n  * are stored on a stack, so the next call to `finishUndoableChange()` will\n  * pop the elements and old values off the stack, gets the current values\n  * from the DOM and uses all of these to construct the undo-able command.\n  * @param {string} attrName - The name of the attribute being changed\n  * @param {Element[]} elems - Array of DOM elements being changed\n  * @returns {undefined}\n  */\n  beginUndoableChange (attrName, elems) {\n    const p = ++this.undoChangeStackPointer;\n    let i = elems.length;\n    const oldValues = new Array(i), elements = new Array(i);\n    while (i--) {\n      const elem = elems[i];\n      if (isNullish(elem)) { continue; }\n      elements[i] = elem;\n      oldValues[i] = elem.getAttribute(attrName);\n    }\n    this.undoableChangeStack[p] = {\n      attrName,\n      oldValues,\n      elements\n    };\n  }\n\n  /**\n  * This function returns a `BatchCommand` object which summarizes the\n  * change since `beginUndoableChange` was called.  The command can then\n  * be added to the command history.\n  * @returns {BatchCommand} Batch command object with resulting changes\n  */\n  finishUndoableChange () {\n    const p = this.undoChangeStackPointer--;\n    const changeset = this.undoableChangeStack[p];\n    const {attrName} = changeset;\n    const batchCmd = new BatchCommand('Change ' + attrName);\n    let i = changeset.elements.length;\n    while (i--) {\n      const elem = changeset.elements[i];\n      if (isNullish(elem)) { continue; }\n      const changes = {};\n      changes[attrName] = changeset.oldValues[i];\n      if (changes[attrName] !== elem.getAttribute(attrName)) {\n        batchCmd.addSubCommand(new ChangeElementCommand(elem, changes, attrName));\n      }\n    }\n    this.undoableChangeStack[p] = null;\n    return batchCmd;\n  }\n}\n","/**\n * Mathematical utilities\n * @module math\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\n/**\n* @typedef {PlainObject} module:math.AngleCoord45\n* @property {Float} x - The angle-snapped x value\n* @property {Float} y - The angle-snapped y value\n* @property {Integer} a - The angle at which to snap\n*/\n\n/**\n* @typedef {PlainObject} module:math.XYObject\n* @property {Float} x\n* @property {Float} y\n*/\n\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {isNullish} from './utilities.js';\n\n// Constants\nconst NEAR_ZERO = 1e-14;\n\n// Throw away SVGSVGElement used for creating matrices/transforms.\nconst svg = document.createElementNS(NS.SVG, 'svg');\n\n/**\n * A (hopefully) quicker function to transform a point by a matrix\n * (this function avoids any DOM calls and just does the math).\n * @function module:math.transformPoint\n * @param {Float} x - Float representing the x coordinate\n * @param {Float} y - Float representing the y coordinate\n * @param {SVGMatrix} m - Matrix object to transform the point with\n * @returns {module:math.XYObject} An x, y object representing the transformed point\n*/\nexport const transformPoint = function (x, y, m) {\n  return {x: m.a * x + m.c * y + m.e, y: m.b * x + m.d * y + m.f};\n};\n\n/**\n * Helper function to check if the matrix performs no actual transform\n * (i.e. exists for identity purposes).\n * @function module:math.isIdentity\n * @param {SVGMatrix} m - The matrix object to check\n * @returns {boolean} Indicates whether or not the matrix is 1,0,0,1,0,0\n*/\nexport const isIdentity = function (m) {\n  return (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && m.e === 0 && m.f === 0);\n};\n\n/**\n * This function tries to return a `SVGMatrix` that is the multiplication `m1 * m2`.\n * We also round to zero when it's near zero.\n * @function module:math.matrixMultiply\n * @param {...SVGMatrix} args - Matrix objects to multiply\n * @returns {SVGMatrix} The matrix object resulting from the calculation\n*/\nexport const matrixMultiply = function (...args) {\n  const m = args.reduceRight((prev, m1) => {\n    return m1.multiply(prev);\n  });\n\n  if (Math.abs(m.a) < NEAR_ZERO) { m.a = 0; }\n  if (Math.abs(m.b) < NEAR_ZERO) { m.b = 0; }\n  if (Math.abs(m.c) < NEAR_ZERO) { m.c = 0; }\n  if (Math.abs(m.d) < NEAR_ZERO) { m.d = 0; }\n  if (Math.abs(m.e) < NEAR_ZERO) { m.e = 0; }\n  if (Math.abs(m.f) < NEAR_ZERO) { m.f = 0; }\n\n  return m;\n};\n\n/**\n * See if the given transformlist includes a non-indentity matrix transform.\n * @function module:math.hasMatrixTransform\n * @param {SVGTransformList} [tlist] - The transformlist to check\n * @returns {boolean} Whether or not a matrix transform was found\n*/\nexport const hasMatrixTransform = function (tlist) {\n  if (!tlist) { return false; }\n  let num = tlist.numberOfItems;\n  while (num--) {\n    const xform = tlist.getItem(num);\n    if (xform.type === 1 && !isIdentity(xform.matrix)) { return true; }\n  }\n  return false;\n};\n\n/**\n* @typedef {PlainObject} module:math.TransformedBox An object with the following values\n* @property {module:math.XYObject} tl - The top left coordinate\n* @property {module:math.XYObject} tr - The top right coordinate\n* @property {module:math.XYObject} bl - The bottom left coordinate\n* @property {module:math.XYObject} br - The bottom right coordinate\n* @property {PlainObject} aabox - Object with the following values:\n* @property {Float} aabox.x - Float with the axis-aligned x coordinate\n* @property {Float} aabox.y - Float with the axis-aligned y coordinate\n* @property {Float} aabox.width - Float with the axis-aligned width coordinate\n* @property {Float} aabox.height - Float with the axis-aligned height coordinate\n*/\n\n/**\n * Transforms a rectangle based on the given matrix.\n * @function module:math.transformBox\n * @param {Float} l - Float with the box's left coordinate\n * @param {Float} t - Float with the box's top coordinate\n * @param {Float} w - Float with the box width\n * @param {Float} h - Float with the box height\n * @param {SVGMatrix} m - Matrix object to transform the box by\n * @returns {module:math.TransformedBox}\n*/\nexport const transformBox = function (l, t, w, h, m) {\n  const tl = transformPoint(l, t, m),\n    tr = transformPoint((l + w), t, m),\n    bl = transformPoint(l, (t + h), m),\n    br = transformPoint((l + w), (t + h), m),\n\n    minx = Math.min(tl.x, tr.x, bl.x, br.x),\n    maxx = Math.max(tl.x, tr.x, bl.x, br.x),\n    miny = Math.min(tl.y, tr.y, bl.y, br.y),\n    maxy = Math.max(tl.y, tr.y, bl.y, br.y);\n\n  return {\n    tl,\n    tr,\n    bl,\n    br,\n    aabox: {\n      x: minx,\n      y: miny,\n      width: (maxx - minx),\n      height: (maxy - miny)\n    }\n  };\n};\n\n/**\n * This returns a single matrix Transform for a given Transform List\n * (this is the equivalent of `SVGTransformList.consolidate()` but unlike\n * that method, this one does not modify the actual `SVGTransformList`).\n * This function is very liberal with its `min`, `max` arguments.\n * @function module:math.transformListToTransform\n * @param {SVGTransformList} tlist - The transformlist object\n * @param {Integer} [min=0] - Optional integer indicating start transform position\n * @param {Integer} [max] - Optional integer indicating end transform position;\n *   defaults to one less than the tlist's `numberOfItems`\n * @returns {SVGTransform} A single matrix transform object\n*/\nexport const transformListToTransform = function (tlist, min, max) {\n  if (isNullish(tlist)) {\n    // Or should tlist = null have been prevented before this?\n    return svg.createSVGTransformFromMatrix(svg.createSVGMatrix());\n  }\n  min = min || 0;\n  max = max || (tlist.numberOfItems - 1);\n  min = parseInt(min);\n  max = parseInt(max);\n  if (min > max) { const temp = max; max = min; min = temp; }\n  let m = svg.createSVGMatrix();\n  for (let i = min; i <= max; ++i) {\n    // if our indices are out of range, just use a harmless identity matrix\n    const mtom = (i >= 0 && i < tlist.numberOfItems\n      ? tlist.getItem(i).matrix\n      : svg.createSVGMatrix());\n    m = matrixMultiply(m, mtom);\n  }\n  return svg.createSVGTransformFromMatrix(m);\n};\n\n/**\n * Get the matrix object for a given element.\n * @function module:math.getMatrix\n * @param {Element} elem - The DOM element to check\n * @returns {SVGMatrix} The matrix object associated with the element's transformlist\n*/\nexport const getMatrix = function (elem) {\n  const tlist = getTransformList(elem);\n  return transformListToTransform(tlist).matrix;\n};\n\n/**\n * Returns a 45 degree angle coordinate associated with the two given\n * coordinates.\n * @function module:math.snapToAngle\n * @param {Integer} x1 - First coordinate's x value\n * @param {Integer} y1 - First coordinate's y value\n * @param {Integer} x2 - Second coordinate's x value\n * @param {Integer} y2 - Second coordinate's y value\n * @returns {module:math.AngleCoord45}\n*/\nexport const snapToAngle = function (x1, y1, x2, y2) {\n  const snap = Math.PI / 4; // 45 degrees\n  const dx = x2 - x1;\n  const dy = y2 - y1;\n  const angle = Math.atan2(dy, dx);\n  const dist = Math.sqrt(dx * dx + dy * dy);\n  const snapangle = Math.round(angle / snap) * snap;\n\n  return {\n    x: x1 + dist * Math.cos(snapangle),\n    y: y1 + dist * Math.sin(snapangle),\n    a: snapangle\n  };\n};\n\n/**\n * Check if two rectangles (BBoxes objects) intersect each other.\n * @function module:math.rectsIntersect\n * @param {SVGRect} r1 - The first BBox-like object\n * @param {SVGRect} r2 - The second BBox-like object\n * @returns {boolean} True if rectangles intersect\n */\nexport const rectsIntersect = function (r1, r2) {\n  return r2.x < (r1.x + r1.width) &&\n    (r2.x + r2.width) > r1.x &&\n    r2.y < (r1.y + r1.height) &&\n    (r2.y + r2.height) > r1.y;\n};\n","/* globals jQuery */\n/**\n * Path functionality\n * @module path\n * @license MIT\n *\n * @copyright 2011 Alexis Deveria, 2011 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {shortFloat} from './units.js';\nimport {ChangeElementCommand, BatchCommand} from './history.js';\nimport {\n  transformPoint, getMatrix, snapToAngle, rectsIntersect,\n  transformListToTransform\n} from './math.js';\nimport {\n  assignAttributes, getElem, getRotationAngle, getBBox,\n  getRefElem, findDefs, snapToGrid, isNullish,\n  getBBox as utilsGetBBox\n} from './utilities.js';\nimport {\n  supportsPathInsertItemBefore, supportsPathReplaceItem, isWebkit\n} from './browser.js';\n\nconst $ = jQuery;\n\nconst segData = {\n  2: ['x', 'y'], // PATHSEG_MOVETO_ABS\n  4: ['x', 'y'], // PATHSEG_LINETO_ABS\n  6: ['x', 'y', 'x1', 'y1', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_ABS\n  8: ['x', 'y', 'x1', 'y1'], // PATHSEG_CURVETO_QUADRATIC_ABS\n  10: ['x', 'y', 'r1', 'r2', 'angle', 'largeArcFlag', 'sweepFlag'], // PATHSEG_ARC_ABS\n  12: ['x'], // PATHSEG_LINETO_HORIZONTAL_ABS\n  14: ['y'], // PATHSEG_LINETO_VERTICAL_ABS\n  16: ['x', 'y', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_SMOOTH_ABS\n  18: ['x', 'y'] // PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS\n};\n\n/**\n * @tutorial LocaleDocs\n * @typedef {module:locale.LocaleStrings|PlainObject} module:path.uiStrings\n * @property {PlainObject.<string, string>} ui\n*/\n\nconst uiStrings = {};\n/**\n* @function module:path.setUiStrings\n* @param {module:path.uiStrings} strs\n* @returns {undefined}\n*/\nexport const setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.ui);\n};\n\nlet pathFuncs = [];\n\nlet linkControlPts = true;\n\n// Stores references to paths via IDs.\n// TODO: Make this cross-document happy.\nlet pathData = {};\n\n/**\n* @function module:path.setLinkControlPoints\n* @param {boolean} lcp\n* @returns {undefined}\n*/\nexport const setLinkControlPoints = function (lcp) {\n  linkControlPts = lcp;\n};\n\n/**\n * @name module:path.path\n * @type {null|module:path.Path}\n * @memberof module:path\n*/\nexport let path = null; // eslint-disable-line import/no-mutable-exports\n\nlet editorContext_ = null;\n\n/**\n* @external MouseEvent\n*/\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:path.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:path.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n/**\n * @interface module:path.EditorContext\n * @property {module:select.SelectorManager} selectorManager\n * @property {module:svgcanvas.SvgCanvas} canvas\n */\n/**\n * @function module:path.EditorContext#call\n * @param {\"selected\"|\"changed\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed} arg - Argument to pass through to the callback function. If the event is \"changed\", an array of `Element`s is passed; if \"selected\", a single-item array of `Element` is passed.\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#resetD\n * @param {SVGPathElement} p\n * @returns {undefined}\n*/\n/**\n * Note: This doesn't round to an integer necessarily\n * @function module:path.EditorContext#round\n * @param {Float} val\n * @returns {Float} Rounded value to nearest value based on `currentZoom`\n */\n/**\n * @function module:path.EditorContext#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addToSelection\n * @param {Element[]} elemsToAdd - An array of DOM elements to add to the selection\n * @param {boolean} showGrips - Indicates whether the resize grips should be shown\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#remapElement\n * @param {Element} selected - DOM element to be changed\n * @param {PlainObject.<string, string>} changes - Object with changes to be remapped\n * @param {SVGMatrix} m - Matrix object to use for remapping coordinates\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#addSVGElementFromJson\n * @param {module:path.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:path.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:path.EditorContext#getOpacity\n * @returns {Float}\n */\n/**\n * @function module:path.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:path.EditorContext#getContainer\n * @returns {Element}\n */\n/**\n * @function module:path.EditorContext#setStarted\n * @param {boolean} s\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#getRubberBox\n * @returns {SVGRectElement}\n*/\n/**\n * @function module:path.EditorContext#setRubberBox\n * @param {SVGRectElement} rb\n * @returns {SVGRectElement} Same as parameter passed in\n */\n/**\n * @function module:path.EditorContext#addPtsToSelection\n * @param {PlainObject} cfg\n * @param {boolean} cfg.closedSubpath\n * @param {SVGCircleElement[]} cfg.grips\n * @returns {undefined}\n */\n/**\n * @function module:path.EditorContext#endChanges\n * @param {PlainObject} cfg\n * @param {string} cfg.cmd\n * @param {Element} cfg.elem\n * @returns {undefined}\n*/\n/**\n * @function module:path.EditorContext#getCurrentZoom\n * @returns {Float} The current zoom level\n */\n/**\n * Returns the last created DOM element ID string\n * @function module:path.EditorContext#getId\n * @returns {string}\n */\n/**\n * Creates and returns a unique ID string for a DOM element\n * @function module:path.EditorContext#getNextId\n * @returns {string}\n*/\n/**\n * Gets the desired element from a mouse event\n * @function module:path.EditorContext#getMouseTarget\n * @param {external:MouseEvent} evt - Event object from the mouse event\n * @returns {Element} DOM element we want\n */\n/**\n * @function module:path.EditorContext#getCurrentMode\n * @returns {string}\n */\n/**\n * @function module:path.EditorContext#setCurrentMode\n * @param {string} cm The mode\n * @returns {string} The same mode as passed in\n*/\n/**\n * @function module:path.EditorContext#getDrawnPath\n * @returns {SVGPathElement|null}\n */\n/**\n * @function module:path.EditorContext#setDrawnPath\n * @param {SVGPathElement|null} dp\n * @returns {SVGPathElement|null} The same value as passed in\n */\n/**\n * @function module:path.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\n/**\n* @function module:path.init\n* @param {module:path.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n\n  pathFuncs = [0, 'ClosePath'];\n  const pathFuncsStrs = [\n    'Moveto', 'Lineto', 'CurvetoCubic', 'CurvetoQuadratic', 'Arc',\n    'LinetoHorizontal', 'LinetoVertical', 'CurvetoCubicSmooth', 'CurvetoQuadraticSmooth'\n  ];\n  $.each(pathFuncsStrs, function (i, s) {\n    pathFuncs.push(s + 'Abs');\n    pathFuncs.push(s + 'Rel');\n  });\n};\n\n/**\n* @function module:path.insertItemBefore\n* @param {Element} elem\n* @param {Segment} newseg\n* @param {Integer} index\n* @returns {undefined}\n*/\nexport const insertItemBefore = function (elem, newseg, index) {\n  // Support insertItemBefore on paths for FF2\n  const list = elem.pathSegList;\n\n  if (supportsPathInsertItemBefore()) {\n    list.insertItemBefore(newseg, index);\n    return;\n  }\n  const len = list.numberOfItems;\n  const arr = [];\n  for (let i = 0; i < len; i++) {\n    const curSeg = list.getItem(i);\n    arr.push(curSeg);\n  }\n  list.clear();\n  for (let i = 0; i < len; i++) {\n    if (i === index) { // index + 1\n      list.appendItem(newseg);\n    }\n    list.appendItem(arr[i]);\n  }\n};\n\n/**\n* @function module:path.ptObjToArr\n* @todo See if this should just live in `replacePathSeg`\n* @param {string} type\n* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem\n* @returns {ArgumentsArray}\n*/\nexport const ptObjToArr = function (type, segItem) {\n  const props = segData[type];\n  return props.map((prop) => {\n    return segItem[prop];\n  });\n};\n\n/**\n* @function module:path.getGripPt\n* @param {Segment} seg\n* @param {module:math.XYObject} altPt\n* @returns {module:math.XYObject}\n*/\nexport const getGripPt = function (seg, altPt) {\n  const {path: pth} = seg;\n  let out = {\n    x: altPt ? altPt.x : seg.item.x,\n    y: altPt ? altPt.y : seg.item.y\n  };\n\n  if (pth.matrix) {\n    const pt = transformPoint(out.x, out.y, pth.matrix);\n    out = pt;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n};\n\n/**\n* @function module:path.getPointFromGrip\n* @param {module:math.XYObject} pt\n* @param {module:path.Path} pth\n* @returns {module:math.XYObject}\n*/\nexport const getPointFromGrip = function (pt, pth) {\n  const out = {\n    x: pt.x,\n    y: pt.y\n  };\n\n  if (pth.matrix) {\n    pt = transformPoint(out.x, out.y, pth.imatrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  const currentZoom = editorContext_.getCurrentZoom();\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  return out;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addPointGrip\n* @param {Integer} index\n* @param {Integer} x\n* @param {Integer} y\n* @returns {SVGCircleElement}\n*/\nexport const addPointGrip = function (index, x, y) {\n  // create the container of all the point grips\n  const pointGripContainer = getGripContainer();\n\n  let pointGrip = getElem('pathpointgrip_' + index);\n  // create it\n  if (!pointGrip) {\n    pointGrip = document.createElementNS(NS.SVG, 'circle');\n    const atts = {\n      id: 'pathpointgrip_' + index,\n      display: 'none',\n      r: 4,\n      fill: '#0FF',\n      stroke: '#00F',\n      'stroke-width': 2,\n      cursor: 'move',\n      style: 'pointer-events:all'\n    };\n    if ('pathNodeTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n      atts['xlink:title'] = uiStrings.pathNodeTooltip;\n    }\n    assignAttributes(pointGrip, atts);\n    pointGrip = pointGripContainer.appendChild(pointGrip);\n\n    const grip = $('#pathpointgrip_' + index);\n    grip.dblclick(function () {\n      if (path) {\n        path.setSegType();\n      }\n    });\n  }\n  if (x && y) {\n    // set up the point grip element and display it\n    assignAttributes(pointGrip, {\n      cx: x,\n      cy: y,\n      display: 'inline'\n    });\n  }\n  return pointGrip;\n};\n\n/**\n* @function module:path.getGripContainer\n* @returns {Element}\n*/\nexport const getGripContainer = function () {\n  let c = getElem('pathpointgrip_container');\n  if (!c) {\n    const parentElement = getElem('selectorParentGroup');\n    c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));\n    c.id = 'pathpointgrip_container';\n  }\n  return c;\n};\n\n/**\n* Requires prior call to `setUiStrings` if `xlink:title`\n*    to be set on the grip.\n* @function module:path.addCtrlGrip\n* @param {string} id\n* @returns {SVGCircleElement}\n*/\nexport const addCtrlGrip = function (id) {\n  let pointGrip = getElem('ctrlpointgrip_' + id);\n  if (pointGrip) { return pointGrip; }\n\n  pointGrip = document.createElementNS(NS.SVG, 'circle');\n  const atts = {\n    id: 'ctrlpointgrip_' + id,\n    display: 'none',\n    r: 4,\n    fill: '#0FF',\n    stroke: '#55F',\n    'stroke-width': 1,\n    cursor: 'move',\n    style: 'pointer-events:all'\n  };\n  if ('pathCtrlPtTooltip' in uiStrings) { // May be empty if running path.js without svg-editor\n    atts['xlink:title'] = uiStrings.pathCtrlPtTooltip;\n  }\n  assignAttributes(pointGrip, atts);\n  getGripContainer().append(pointGrip);\n  return pointGrip;\n};\n\n/**\n* @function module:path.getCtrlLine\n* @param {string} id\n* @returns {SVGLineElement}\n*/\nexport const getCtrlLine = function (id) {\n  let ctrlLine = getElem('ctrlLine_' + id);\n  if (ctrlLine) { return ctrlLine; }\n\n  ctrlLine = document.createElementNS(NS.SVG, 'line');\n  assignAttributes(ctrlLine, {\n    id: 'ctrlLine_' + id,\n    stroke: '#555',\n    'stroke-width': 1,\n    style: 'pointer-events:none'\n  });\n  getGripContainer().append(ctrlLine);\n  return ctrlLine;\n};\n\n/**\n* @function module:path.getPointGrip\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGCircleElement}\n*/\nexport const getPointGrip = function (seg, update) {\n  const {index} = seg;\n  const pointGrip = addPointGrip(index);\n\n  if (update) {\n    const pt = getGripPt(seg);\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n  }\n\n  return pointGrip;\n};\n\n/**\n* @function module:path.getControlPoints\n* @param {Segment} seg\n* @returns {PlainObject.<string, SVGLineElement|SVGCircleElement>}\n*/\nexport const getControlPoints = function (seg) {\n  const {item, index} = seg;\n  if (!('x1' in item) || !('x2' in item)) { return null; }\n  const cpt = {};\n  /* const pointGripContainer = */ getGripContainer();\n\n  // Note that this is intentionally not seg.prev.item\n  const prev = path.segs[index - 1].item;\n\n  const segItems = [prev, item];\n\n  for (let i = 1; i < 3; i++) {\n    const id = index + 'c' + i;\n\n    const ctrlLine = cpt['c' + i + '_line'] = getCtrlLine(id);\n\n    const pt = getGripPt(seg, {x: item['x' + i], y: item['y' + i]});\n    const gpt = getGripPt(seg, {x: segItems[i - 1].x, y: segItems[i - 1].y});\n\n    assignAttributes(ctrlLine, {\n      x1: pt.x,\n      y1: pt.y,\n      x2: gpt.x,\n      y2: gpt.y,\n      display: 'inline'\n    });\n\n    cpt['c' + i + '_line'] = ctrlLine;\n\n    // create it\n    const pointGrip = cpt['c' + i] = addCtrlGrip(id);\n\n    assignAttributes(pointGrip, {\n      cx: pt.x,\n      cy: pt.y,\n      display: 'inline'\n    });\n    cpt['c' + i] = pointGrip;\n  }\n  return cpt;\n};\n\n/**\n* This replaces the segment at the given index. Type is given as number.\n* @function module:path.replacePathSeg\n* @param {Integer} type Possible values set during {@link module:path.init}\n* @param {Integer} index\n* @param {ArgumentsArray} pts\n* @param {SVGPathElement} elem\n* @returns {undefined}\n*/\nexport const replacePathSeg = function (type, index, pts, elem) {\n  const pth = elem || path.elem;\n\n  const func = 'createSVGPathSeg' + pathFuncs[type];\n  const seg = pth[func](...pts);\n\n  if (supportsPathReplaceItem()) {\n    pth.pathSegList.replaceItem(seg, index);\n  } else {\n    const segList = pth.pathSegList;\n    const len = segList.numberOfItems;\n    const arr = [];\n    for (let i = 0; i < len; i++) {\n      const curSeg = segList.getItem(i);\n      arr.push(curSeg);\n    }\n    segList.clear();\n    for (let i = 0; i < len; i++) {\n      if (i === index) {\n        segList.appendItem(seg);\n      } else {\n        segList.appendItem(arr[i]);\n      }\n    }\n  }\n};\n\n/**\n* @function module:path.getSegSelector\n* @param {Segment} seg\n* @param {boolean} update\n* @returns {SVGPathElement}\n*/\nexport const getSegSelector = function (seg, update) {\n  const {index} = seg;\n  let segLine = getElem('segline_' + index);\n  if (!segLine) {\n    const pointGripContainer = getGripContainer();\n    // create segline\n    segLine = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(segLine, {\n      id: 'segline_' + index,\n      display: 'none',\n      fill: 'none',\n      stroke: '#0FF',\n      'stroke-width': 2,\n      style: 'pointer-events:none',\n      d: 'M0,0 0,0'\n    });\n    pointGripContainer.append(segLine);\n  }\n\n  if (update) {\n    const {prev} = seg;\n    if (!prev) {\n      segLine.setAttribute('display', 'none');\n      return segLine;\n    }\n\n    const pt = getGripPt(prev);\n    // Set start point\n    replacePathSeg(2, 0, [pt.x, pt.y], segLine);\n\n    const pts = ptObjToArr(seg.type, seg.item); // , true);\n    for (let i = 0; i < pts.length; i += 2) {\n      const point = getGripPt(seg, {x: pts[i], y: pts[i + 1]});\n      pts[i] = point.x;\n      pts[i + 1] = point.y;\n    }\n\n    replacePathSeg(seg.type, 1, pts, segLine);\n  }\n  return segLine;\n};\n\n/**\n * @typedef {PlainObject} Point\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n */\n\n/**\n* Takes three points and creates a smoother line based on them.\n* @function module:path.smoothControlPoints\n* @param {Point} ct1 - Object with x and y values (first control point)\n* @param {Point} ct2 - Object with x and y values (second control point)\n* @param {Point} pt - Object with x and y values (third point)\n* @returns {Point[]} Array of two \"smoothed\" point objects\n*/\nexport const smoothControlPoints = function (ct1, ct2, pt) {\n  // each point must not be the origin\n  const x1 = ct1.x - pt.x,\n    y1 = ct1.y - pt.y,\n    x2 = ct2.x - pt.x,\n    y2 = ct2.y - pt.y;\n\n  if ((x1 !== 0 || y1 !== 0) && (x2 !== 0 || y2 !== 0)) {\n    const\n      r1 = Math.sqrt(x1 * x1 + y1 * y1),\n      r2 = Math.sqrt(x2 * x2 + y2 * y2),\n      nct1 = editorContext_.getSVGRoot().createSVGPoint(),\n      nct2 = editorContext_.getSVGRoot().createSVGPoint();\n    let anglea = Math.atan2(y1, x1),\n      angleb = Math.atan2(y2, x2);\n    if (anglea < 0) { anglea += 2 * Math.PI; }\n    if (angleb < 0) { angleb += 2 * Math.PI; }\n\n    const angleBetween = Math.abs(anglea - angleb),\n      angleDiff = Math.abs(Math.PI - angleBetween) / 2;\n\n    let newAnglea, newAngleb;\n    if (anglea - angleb > 0) {\n      newAnglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff);\n    } else {\n      newAnglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff);\n      newAngleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff);\n    }\n\n    // rotate the points\n    nct1.x = r1 * Math.cos(newAnglea) + pt.x;\n    nct1.y = r1 * Math.sin(newAnglea) + pt.y;\n    nct2.x = r2 * Math.cos(newAngleb) + pt.x;\n    nct2.y = r2 * Math.sin(newAngleb) + pt.y;\n\n    return [nct1, nct2];\n  }\n  return undefined;\n};\n\n/**\n*\n*/\nexport class Segment {\n  /**\n  * @param {Integer} index\n  * @param {SVGPathSeg} item\n  * @todo Is `item` be more constrained here?\n  */\n  constructor (index, item) {\n    this.selected = false;\n    this.index = index;\n    this.item = item;\n    this.type = item.pathSegType;\n\n    this.ctrlpts = [];\n    this.ptgrip = null;\n    this.segsel = null;\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  showCtrlPts (y) {\n    for (const i in this.ctrlpts) {\n      if ({}.hasOwnProperty.call(this.ctrlpts, i)) {\n        this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');\n      }\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  selectCtrls (y) {\n    $('#ctrlpointgrip_' + this.index + 'c1, #ctrlpointgrip_' + this.index + 'c2')\n      .attr('fill', y ? '#0FF' : '#EEE');\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  show (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('display', y ? 'inline' : 'none');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      // Show/hide all control points if available\n      this.showCtrlPts(y);\n    }\n  }\n\n  /**\n   * @param {boolean} y\n   * @returns {undefined}\n   */\n  select (y) {\n    if (this.ptgrip) {\n      this.ptgrip.setAttribute('stroke', y ? '#0FF' : '#00F');\n      this.segsel.setAttribute('display', y ? 'inline' : 'none');\n      if (this.ctrlpts) {\n        this.selectCtrls(y);\n      }\n      this.selected = y;\n    }\n  }\n\n  /**\n   * @returns {undefined}\n   */\n  addGrip () {\n    this.ptgrip = getPointGrip(this, true);\n    this.ctrlpts = getControlPoints(this); // , true);\n    this.segsel = getSegSelector(this, true);\n  }\n\n  /**\n   * @param {boolean} full\n   * @returns {undefined}\n   */\n  update (full) {\n    if (this.ptgrip) {\n      const pt = getGripPt(this);\n      assignAttributes(this.ptgrip, {\n        cx: pt.x,\n        cy: pt.y\n      });\n\n      getSegSelector(this, true);\n\n      if (this.ctrlpts) {\n        if (full) {\n          this.item = path.elem.pathSegList.getItem(this.index);\n          this.type = this.item.pathSegType;\n        }\n        getControlPoints(this);\n      }\n      // this.segsel.setAttribute('display', y ? 'inline' : 'none');\n    }\n  }\n\n  /**\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  move (dx, dy) {\n    const {item} = this;\n\n    const curPts = this.ctrlpts\n      ? [\n        item.x += dx, item.y += dy,\n        item.x1, item.y1, item.x2 += dx, item.y2 += dy\n      ]\n      : [item.x += dx, item.y += dy];\n\n    replacePathSeg(this.type, this.index, curPts);\n\n    if (this.next && this.next.ctrlpts) {\n      const next = this.next.item;\n      const nextPts = [\n        next.x, next.y,\n        next.x1 += dx, next.y1 += dy, next.x2, next.y2\n      ];\n      replacePathSeg(this.next.type, this.next.index, nextPts);\n    }\n\n    if (this.mate) {\n      // The last point of a closed subpath has a 'mate',\n      // which is the 'M' segment of the subpath\n      const {item: itm} = this.mate;\n      const pts = [itm.x += dx, itm.y += dy];\n      replacePathSeg(this.mate.type, this.mate.index, pts);\n      // Has no grip, so does not need 'updating'?\n    }\n\n    this.update(true);\n    if (this.next) { this.next.update(true); }\n  }\n\n  /**\n   * @param {Integer} num\n   * @returns {undefined}\n   */\n  setLinked (num) {\n    let seg, anum, pt;\n    if (num === 2) {\n      anum = 1;\n      seg = this.next;\n      if (!seg) { return; }\n      pt = this.item;\n    } else {\n      anum = 2;\n      seg = this.prev;\n      if (!seg) { return; }\n      pt = seg.item;\n    }\n\n    const {item} = seg;\n    item['x' + anum] = pt.x + (pt.x - this.item['x' + num]);\n    item['y' + anum] = pt.y + (pt.y - this.item['y' + num]);\n\n    const pts = [\n      item.x, item.y,\n      item.x1, item.y1,\n      item.x2, item.y2\n    ];\n\n    replacePathSeg(seg.type, seg.index, pts);\n    seg.update(true);\n  }\n\n  /**\n   * @param {Integer} num\n   * @param {Integer} dx\n   * @param {Integer} dy\n   * @returns {undefined}\n   */\n  moveCtrl (num, dx, dy) {\n    const {item} = this;\n    item['x' + num] += dx;\n    item['y' + num] += dy;\n\n    const pts = [\n      item.x, item.y,\n      item.x1, item.y1, item.x2, item.y2\n    ];\n\n    replacePathSeg(this.type, this.index, pts);\n    this.update(true);\n  }\n\n  /**\n   * @param {Integer} newType Possible values set during {@link module:path.init}\n   * @param {ArgumentsArray} pts\n   * @returns {undefined}\n   */\n  setType (newType, pts) {\n    replacePathSeg(newType, this.index, pts);\n    this.type = newType;\n    this.item = path.elem.pathSegList.getItem(this.index);\n    this.showCtrlPts(newType === 6);\n    this.ctrlpts = getControlPoints(this);\n    this.update(true);\n  }\n}\n\n/**\n*\n*/\nexport class Path {\n  /**\n  * @param {SVGPathElement} elem\n  * @throws {Error} If constructed without a path element\n  */\n  constructor (elem) {\n    if (!elem || elem.tagName !== 'path') {\n      throw new Error('svgedit.path.Path constructed without a <path> element');\n    }\n\n    this.elem = elem;\n    this.segs = [];\n    this.selected_pts = [];\n    path = this; // eslint-disable-line consistent-this\n\n    this.init();\n  }\n\n  /**\n  * Reset path data.\n  * @returns {module:path.Path}\n  */\n  init () {\n    // Hide all grips, etc\n\n    // fixed, needed to work on all found elements, not just first\n    $(getGripContainer()).find('*').each(function () {\n      $(this).attr('display', 'none');\n    });\n\n    const segList = this.elem.pathSegList;\n    const len = segList.numberOfItems;\n    this.segs = [];\n    this.selected_pts = [];\n    this.first_seg = null;\n\n    // Set up segs array\n    for (let i = 0; i < len; i++) {\n      const item = segList.getItem(i);\n      const segment = new Segment(i, item);\n      segment.path = this;\n      this.segs.push(segment);\n    }\n\n    const {segs} = this;\n\n    let startI = null;\n    for (let i = 0; i < len; i++) {\n      const seg = segs[i];\n      const nextSeg = (i + 1) >= len ? null : segs[i + 1];\n      const prevSeg = (i - 1) < 0 ? null : segs[i - 1];\n      if (seg.type === 2) {\n        if (prevSeg && prevSeg.type !== 1) {\n          // New sub-path, last one is open,\n          // so add a grip to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n        }\n        // Remember that this is a starter seg\n        startI = i;\n      } else if (nextSeg && nextSeg.type === 1) {\n        // This is the last real segment of a closed sub-path\n        // Next is first seg after \"M\"\n        seg.next = segs[startI + 1];\n\n        // First seg after \"M\"'s prev is this\n        seg.next.prev = seg;\n        seg.mate = segs[startI];\n        seg.addGrip();\n        if (isNullish(this.first_seg)) {\n          this.first_seg = seg;\n        }\n      } else if (!nextSeg) {\n        if (seg.type !== 1) {\n          // Last seg, doesn't close so add a grip\n          // to last sub-path's first point\n          const startSeg = segs[startI];\n          startSeg.next = segs[startI + 1];\n          startSeg.next.prev = startSeg;\n          startSeg.addGrip();\n          seg.addGrip();\n\n          if (!this.first_seg) {\n            // Open path, so set first as real first and add grip\n            this.first_seg = segs[startI];\n          }\n        }\n      } else if (seg.type !== 1) {\n        // Regular segment, so add grip and its \"next\"\n        seg.addGrip();\n\n        // Don't set its \"next\" if it's an \"M\"\n        if (nextSeg && nextSeg.type !== 2) {\n          seg.next = nextSeg;\n          seg.next.prev = seg;\n        }\n      }\n    }\n    return this;\n  }\n\n  /**\n  * @callback module:path.PathEachSegCallback\n  * @this module:path.Segment\n  * @param {Integer} i The index of the seg being iterated\n  * @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`\n  */\n  /**\n  * @param {module:path.PathEachSegCallback} fn\n  * @returns {undefined}\n  */\n  eachSeg (fn) {\n    const len = this.segs.length;\n    for (let i = 0; i < len; i++) {\n      const ret = fn.call(this.segs[i], i);\n      if (ret === false) { break; }\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  addSeg (index) {\n    // Adds a new segment\n    const seg = this.segs[index];\n    if (!seg.prev) { return; }\n\n    const {prev} = seg;\n    let newseg, newX, newY;\n    switch (seg.item.pathSegType) {\n    case 4: {\n      newX = (seg.item.x + prev.item.x) / 2;\n      newY = (seg.item.y + prev.item.y) / 2;\n      newseg = this.elem.createSVGPathSegLinetoAbs(newX, newY);\n      break;\n    } case 6: { // make it a curved segment to preserve the shape (WRS)\n      // https://en.wikipedia.org/wiki/De_Casteljau%27s_algorithm#Geometric_interpretation\n      const p0x = (prev.item.x + seg.item.x1) / 2;\n      const p1x = (seg.item.x1 + seg.item.x2) / 2;\n      const p2x = (seg.item.x2 + seg.item.x) / 2;\n      const p01x = (p0x + p1x) / 2;\n      const p12x = (p1x + p2x) / 2;\n      newX = (p01x + p12x) / 2;\n      const p0y = (prev.item.y + seg.item.y1) / 2;\n      const p1y = (seg.item.y1 + seg.item.y2) / 2;\n      const p2y = (seg.item.y2 + seg.item.y) / 2;\n      const p01y = (p0y + p1y) / 2;\n      const p12y = (p1y + p2y) / 2;\n      newY = (p01y + p12y) / 2;\n      newseg = this.elem.createSVGPathSegCurvetoCubicAbs(newX, newY, p0x, p0y, p01x, p01y);\n      const pts = [seg.item.x, seg.item.y, p12x, p12y, p2x, p2y];\n      replacePathSeg(seg.type, index, pts);\n      break;\n    }\n    }\n\n    insertItemBefore(this.elem, newseg, index);\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  deleteSeg (index) {\n    const seg = this.segs[index];\n    const list = this.elem.pathSegList;\n\n    seg.show(false);\n    const {next} = seg;\n    if (seg.mate) {\n      // Make the next point be the \"M\" point\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, next.index, pt);\n\n      // Reposition last node\n      replacePathSeg(4, seg.index, pt);\n\n      list.removeItem(seg.mate.index);\n    } else if (!seg.prev) {\n      // First node of open path, make next point the M\n      // const {item} = seg;\n      const pt = [next.item.x, next.item.y];\n      replacePathSeg(2, seg.next.index, pt);\n      list.removeItem(index);\n    } else {\n      list.removeItem(index);\n    }\n  }\n\n  /**\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  removePtFromSelection (index) {\n    const pos = this.selected_pts.indexOf(index);\n    if (pos === -1) {\n      return;\n    }\n    this.segs[index].select(false);\n    this.selected_pts.splice(pos, 1);\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  clearSelection () {\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.select(false);\n    });\n    this.selected_pts = [];\n  }\n\n  /**\n  * @returns {undefined}\n  */\n  storeD () {\n    this.last_d = this.elem.getAttribute('d');\n  }\n\n  /**\n  * @param {Integer} y\n  * @returns {undefined}\n  */\n  show (y) {\n    // Shows this path's segment grips\n    this.eachSeg(function () {\n      // 'this' is the segment here\n      this.show(y);\n    });\n    if (y) {\n      this.selectPt(this.first_seg.index);\n    }\n    return this;\n  }\n\n  /**\n  * Move selected points.\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  movePts (dx, dy) {\n    let i = this.selected_pts.length;\n    while (i--) {\n      const seg = this.segs[this.selected_pts[i]];\n      seg.move(dx, dy);\n    }\n  }\n\n  /**\n  * @param {Integer} dx\n  * @param {Integer} dy\n  * @returns {undefined}\n  */\n  moveCtrl (dx, dy) {\n    const seg = this.segs[this.selected_pts[0]];\n    seg.moveCtrl(this.dragctrl, dx, dy);\n    if (linkControlPts) {\n      seg.setLinked(this.dragctrl);\n    }\n  }\n\n  /**\n  * @param {?Integer} newType See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n  * @returns {undefined}\n  */\n  setSegType (newType) {\n    this.storeD();\n    let i = this.selected_pts.length;\n    let text;\n    while (i--) {\n      const selPt = this.selected_pts[i];\n\n      // Selected seg\n      const cur = this.segs[selPt];\n      const {prev} = cur;\n      if (!prev) { continue; }\n\n      if (!newType) { // double-click, so just toggle\n        text = 'Toggle Path Segment Type';\n\n        // Toggle segment to curve/straight line\n        const oldType = cur.type;\n\n        newType = (oldType === 6) ? 4 : 6;\n      }\n\n      newType = Number(newType);\n\n      const curX = cur.item.x;\n      const curY = cur.item.y;\n      const prevX = prev.item.x;\n      const prevY = prev.item.y;\n      let points;\n      switch (newType) {\n      case 6: {\n        if (cur.olditem) {\n          const old = cur.olditem;\n          points = [curX, curY, old.x1, old.y1, old.x2, old.y2];\n        } else {\n          const diffX = curX - prevX;\n          const diffY = curY - prevY;\n          // get control points from straight line segment\n          /*\n          const ct1x = (prevX + (diffY/2));\n          const ct1y = (prevY - (diffX/2));\n          const ct2x = (curX + (diffY/2));\n          const ct2y = (curY - (diffX/2));\n          */\n          // create control points on the line to preserve the shape (WRS)\n          const ct1x = (prevX + (diffX / 3));\n          const ct1y = (prevY + (diffY / 3));\n          const ct2x = (curX - (diffX / 3));\n          const ct2y = (curY - (diffY / 3));\n          points = [curX, curY, ct1x, ct1y, ct2x, ct2y];\n        }\n        break;\n      } case 4: {\n        points = [curX, curY];\n\n        // Store original prevve segment nums\n        cur.olditem = cur.item;\n        break;\n      }\n      }\n\n      cur.setType(newType, points);\n    }\n    path.endChanges(text);\n  }\n\n  /**\n  * @param {Integer} pt\n  * @param {Integer} ctrlNum\n  * @returns {undefined}\n  */\n  selectPt (pt, ctrlNum) {\n    this.clearSelection();\n    if (isNullish(pt)) {\n      this.eachSeg(function (i) {\n        // 'this' is the segment here.\n        if (this.prev) {\n          pt = i;\n        }\n      });\n    }\n    this.addPtsToSelection(pt);\n    if (ctrlNum) {\n      this.dragctrl = ctrlNum;\n\n      if (linkControlPts) {\n        this.segs[pt].setLinked(ctrlNum);\n      }\n    }\n  }\n\n  /**\n  * Update position of all points.\n  * @returns {Path}\n  */\n  update () {\n    const {elem} = this;\n    if (getRotationAngle(elem)) {\n      this.matrix = getMatrix(elem);\n      this.imatrix = this.matrix.inverse();\n    } else {\n      this.matrix = null;\n      this.imatrix = null;\n    }\n\n    this.eachSeg(function (i) {\n      this.item = elem.pathSegList.getItem(i);\n      this.update();\n    });\n\n    return this;\n  }\n\n  /**\n  * @param {string} text\n  * @returns {undefined}\n  */\n  endChanges (text) {\n    if (isWebkit()) { editorContext_.resetD(this.elem); }\n    const cmd = new ChangeElementCommand(this.elem, {d: this.last_d}, text);\n    editorContext_.endChanges({cmd, elem: this.elem});\n  }\n\n  /**\n  * @param {Integer|Integer[]} indexes\n  * @returns {undefined}\n  */\n  addPtsToSelection (indexes) {\n    if (!Array.isArray(indexes)) { indexes = [indexes]; }\n    for (let i = 0; i < indexes.length; i++) {\n      const index = indexes[i];\n      const seg = this.segs[index];\n      if (seg.ptgrip) {\n        if (!this.selected_pts.includes(index) && index >= 0) {\n          this.selected_pts.push(index);\n        }\n      }\n    }\n    this.selected_pts.sort();\n    let i = this.selected_pts.length;\n    const grips = [];\n    grips.length = i;\n    // Loop through points to be selected and highlight each\n    while (i--) {\n      const pt = this.selected_pts[i];\n      const seg = this.segs[pt];\n      seg.select(true);\n      grips[i] = seg.ptgrip;\n    }\n\n    const closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);\n    editorContext_.addPtsToSelection({grips, closedSubpath});\n  }\n}\n\n/**\n* @param {Integer} index\n* @returns {boolean}\n*/\nPath.subpathIsClosed = function (index) {\n  let clsd = false;\n  // Check if subpath is already open\n  path.eachSeg(function (i) {\n    if (i <= index) { return true; }\n    if (this.type === 2) {\n      // Found M first, so open\n      return false;\n    }\n    if (this.type === 1) {\n      // Found Z first, so closed\n      clsd = true;\n      return false;\n    }\n    return true;\n  });\n\n  return clsd;\n};\n\n/**\n* @function module:path.getPath_\n* @param {SVGPathElement} elem\n* @returns {module:path.Path}\n*/\nexport const getPath_ = function (elem) {\n  let p = pathData[elem.id];\n  if (!p) {\n    p = pathData[elem.id] = new Path(elem);\n  }\n  return p;\n};\n\n/**\n* @function module:path.removePath_\n* @param {string} id\n* @returns {undefined}\n*/\nexport const removePath_ = function (id) {\n  if (id in pathData) { delete pathData[id]; }\n};\n\nlet newcx, newcy, oldcx, oldcy, angle;\n\nconst getRotVals = function (x, y) {\n  let dx = x - oldcx;\n  let dy = y - oldcy;\n\n  // rotate the point around the old center\n  let r = Math.sqrt(dx * dx + dy * dy);\n  let theta = Math.atan2(dy, dx) + angle;\n  dx = r * Math.cos(theta) + oldcx;\n  dy = r * Math.sin(theta) + oldcy;\n\n  // dx,dy should now hold the actual coordinates of each\n  // point after being rotated\n\n  // now we want to rotate them around the new center in the reverse direction\n  dx -= newcx;\n  dy -= newcy;\n\n  r = Math.sqrt(dx * dx + dy * dy);\n  theta = Math.atan2(dy, dx) - angle;\n\n  return {x: r * Math.cos(theta) + newcx,\n    y: r * Math.sin(theta) + newcy};\n};\n\n// If the path was rotated, we must now pay the piper:\n// Every path point must be rotated into the rotated coordinate system of\n// its old center, then determine the new center, then rotate it back\n// This is because we want the path to remember its rotation\n\n/**\n* @function module:path.recalcRotatedPath\n* @todo This is still using ye olde transform methods, can probably\n* be optimized or even taken care of by `recalculateDimensions`\n* @returns {undefined}\n*/\nexport const recalcRotatedPath = function () {\n  const currentPath = path.elem;\n  angle = getRotationAngle(currentPath, true);\n  if (!angle) { return; }\n  // selectedBBoxes[0] = path.oldbbox;\n  const oldbox = path.oldbbox; // selectedBBoxes[0],\n  oldcx = oldbox.x + oldbox.width / 2;\n  oldcy = oldbox.y + oldbox.height / 2;\n  const box = getBBox(currentPath);\n  newcx = box.x + box.width / 2;\n  newcy = box.y + box.height / 2;\n\n  // un-rotate the new center to the proper position\n  const dx = newcx - oldcx,\n    dy = newcy - oldcy,\n    r = Math.sqrt(dx * dx + dy * dy),\n    theta = Math.atan2(dy, dx) + angle;\n\n  newcx = r * Math.cos(theta) + oldcx;\n  newcy = r * Math.sin(theta) + oldcy;\n\n  const list = currentPath.pathSegList;\n\n  let i = list.numberOfItems;\n  while (i) {\n    i -= 1;\n    const seg = list.getItem(i),\n      type = seg.pathSegType;\n    if (type === 1) { continue; }\n\n    const rvals = getRotVals(seg.x, seg.y),\n      points = [rvals.x, rvals.y];\n    if (!isNullish(seg.x1) && !isNullish(seg.x2)) {\n      const cVals1 = getRotVals(seg.x1, seg.y1);\n      const cVals2 = getRotVals(seg.x2, seg.y2);\n      points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);\n    }\n    replacePathSeg(type, i, points);\n  } // loop for each point\n\n  /* box = */ getBBox(currentPath);\n  // selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;\n  // selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;\n\n  // now we must set the new transform to be rotated around the new center\n  const Rnc = editorContext_.getSVGRoot().createSVGTransform(),\n    tlist = getTransformList(currentPath);\n  Rnc.setRotate((angle * 180.0 / Math.PI), newcx, newcy);\n  tlist.replaceItem(Rnc, 0);\n};\n\n// ====================================\n// Public API starts here\n\n/**\n* @function module:path.clearData\n* @returns {undefined}\n*/\nexport const clearData = function () {\n  pathData = {};\n};\n\n// Making public for mocking\n/**\n* @function module:path.reorientGrads\n* @param {Element} elem\n* @param {SVGMatrix} m\n* @returns {undefined}\n*/\nexport const reorientGrads = function (elem, m) {\n  const bb = utilsGetBBox(elem);\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = elem.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      const grad = getRefElem(attrVal);\n      if (grad.tagName === 'linearGradient') {\n        let x1 = grad.getAttribute('x1') || 0;\n        let y1 = grad.getAttribute('y1') || 0;\n        let x2 = grad.getAttribute('x2') || 1;\n        let y2 = grad.getAttribute('y2') || 0;\n\n        // Convert to USOU points\n        x1 = (bb.width * x1) + bb.x;\n        y1 = (bb.height * y1) + bb.y;\n        x2 = (bb.width * x2) + bb.x;\n        y2 = (bb.height * y2) + bb.y;\n\n        // Transform those points\n        const pt1 = transformPoint(x1, y1, m);\n        const pt2 = transformPoint(x2, y2, m);\n\n        // Convert back to BB points\n        const gCoords = {};\n\n        gCoords.x1 = (pt1.x - bb.x) / bb.width;\n        gCoords.y1 = (pt1.y - bb.y) / bb.height;\n        gCoords.x2 = (pt2.x - bb.x) / bb.width;\n        gCoords.y2 = (pt2.y - bb.y) / bb.height;\n\n        const newgrad = grad.cloneNode(true);\n        $(newgrad).attr(gCoords);\n\n        newgrad.id = editorContext_.getNextId();\n        findDefs().append(newgrad);\n        elem.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n    }\n  }\n};\n\n/**\n* This is how we map paths to our preferred relative segment types\n* @name module:path.pathMap\n* @type {GenericArray}\n*/\nconst pathMap = [\n  0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'\n];\n\n/**\n * Convert a path to one with only absolute or relative values.\n * @todo move to pathActions.js\n * @function module:path.convertPath\n * @param {SVGPathElement} pth - the path to convert\n * @param {boolean} toRel - true of convert to relative\n * @returns {string}\n */\nexport const convertPath = function (pth, toRel) {\n  const {pathSegList} = pth;\n  const len = pathSegList.numberOfItems;\n  let curx = 0, cury = 0;\n  let d = '';\n  let lastM = null;\n\n  for (let i = 0; i < len; ++i) {\n    const seg = pathSegList.getItem(i);\n    // if these properties are not in the segment, set them to zero\n    let x = seg.x || 0,\n      y = seg.y || 0,\n      x1 = seg.x1 || 0,\n      y1 = seg.y1 || 0,\n      x2 = seg.x2 || 0,\n      y2 = seg.y2 || 0;\n\n    const type = seg.pathSegType;\n    let letter = pathMap[type]['to' + (toRel ? 'Lower' : 'Upper') + 'Case']();\n\n    switch (type) {\n    case 1: // z,Z closepath (Z/z)\n      d += 'z';\n      if (lastM && !toRel) {\n        curx = lastM[0];\n        cury = lastM[1];\n      }\n      break;\n    case 12: // absolute horizontal line (H)\n      x -= curx;\n      // Fallthrough\n    case 13: // relative horizontal line (h)\n      if (toRel) {\n        curx += x;\n        letter = 'l';\n      } else {\n        x += curx;\n        curx = x;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[x, cury]]);\n      break;\n    case 14: // absolute vertical line (V)\n      y -= cury;\n      // Fallthrough\n    case 15: // relative vertical line (v)\n      if (toRel) {\n        cury += y;\n        letter = 'l';\n      } else {\n        y += cury;\n        cury = y;\n        letter = 'L';\n      }\n      // Convert to \"line\" for easier editing\n      d += pathDSegment(letter, [[curx, y]]);\n      break;\n    case 2: // absolute move (M)\n    case 4: // absolute line (L)\n    case 18: // absolute smooth quad (T)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 5: // relative line (l)\n    case 3: // relative move (m)\n    case 19: // relative smooth quad (t)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      if (type === 2 || type === 3) { lastM = [curx, cury]; }\n\n      d += pathDSegment(letter, [[x, y]]);\n      break;\n    case 6: // absolute cubic (C)\n      x -= curx; x1 -= curx; x2 -= curx;\n      y -= cury; y1 -= cury; y2 -= cury;\n      // Fallthrough\n    case 7: // relative cubic (c)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx; x2 += curx;\n        y += cury; y1 += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x2, y2], [x, y]]);\n      break;\n    case 8: // absolute quad (Q)\n      x -= curx; x1 -= curx;\n      y -= cury; y1 -= cury;\n      // Fallthrough\n    case 9: // relative quad (q)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x1 += curx;\n        y += cury; y1 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x1, y1], [x, y]]);\n      break;\n    case 10: // absolute elliptical arc (A)\n      x -= curx;\n      y -= cury;\n      // Fallthrough\n    case 11: // relative elliptical arc (a)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx;\n        y += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[seg.r1, seg.r2]], [\n        seg.angle,\n        (seg.largeArcFlag ? 1 : 0),\n        (seg.sweepFlag ? 1 : 0)\n      ], [x, y]);\n      break;\n    case 16: // absolute smooth cubic (S)\n      x -= curx; x2 -= curx;\n      y -= cury; y2 -= cury;\n      // Fallthrough\n    case 17: // relative smooth cubic (s)\n      if (toRel) {\n        curx += x;\n        cury += y;\n      } else {\n        x += curx; x2 += curx;\n        y += cury; y2 += cury;\n        curx = x;\n        cury = y;\n      }\n      d += pathDSegment(letter, [[x2, y2], [x, y]]);\n      break;\n    } // switch on path segment type\n  } // for each segment\n  return d;\n};\n\n/**\n * TODO: refactor callers in `convertPath` to use `getPathDFromSegments` instead of this function.\n * Legacy code refactored from `svgcanvas.pathActions.convertPath`.\n * @param {string} letter - path segment command (letter in potentially either case from {@link module:path.pathMap}; see [SVGPathSeg#pathSegTypeAsLetter]{@link https://www.w3.org/TR/SVG/single-page.html#paths-__svg__SVGPathSeg__pathSegTypeAsLetter})\n * @param {GenericArray<GenericArray<Integer>>} points - x,y points\n * @param {GenericArray<GenericArray<Integer>>} [morePoints] - x,y points\n * @param {Integer[]} [lastPoint] - x,y point\n * @returns {string}\n */\nfunction pathDSegment (letter, points, morePoints, lastPoint) {\n  $.each(points, function (i, pnt) {\n    points[i] = shortFloat(pnt);\n  });\n  let segment = letter + points.join(' ');\n  if (morePoints) {\n    segment += ' ' + morePoints.join(' ');\n  }\n  if (lastPoint) {\n    segment += ' ' + shortFloat(lastPoint);\n  }\n  return segment;\n}\n\n/**\n* Group: Path edit functions\n* Functions relating to editing path elements\n* @namespace {PlainObject} pathActions\n* @memberof module:path\n*/\nexport const pathActions = (function () {\n  let subpath = false;\n  let newPoint, firstCtrl;\n\n  let currentPath = null;\n  let hasMoved = false;\n  // No `editorContext_` yet but should be ok as is `null` by default\n  // editorContext_.setDrawnPath(null);\n\n  /**\n  * This function converts a polyline (created by the fh_path tool) into\n  * a path element and coverts every three line segments into a single bezier\n  * curve in an attempt to smooth out the free-hand.\n  * @function smoothPolylineIntoPath\n  * @param {Element} element\n  * @returns {Element}\n  */\n  const smoothPolylineIntoPath = function (element) {\n    let i;\n    const {points} = element;\n    const N = points.numberOfItems;\n    if (N >= 4) {\n      // loop through every 3 points and convert to a cubic bezier curve segment\n      //\n      // NOTE: this is cheating, it means that every 3 points has the potential to\n      // be a corner instead of treating each point in an equal manner. In general,\n      // this technique does not look that good.\n      //\n      // I am open to better ideas!\n      //\n      // Reading:\n      // - http://www.efg2.com/Lab/Graphics/Jean-YvesQueinecBezierCurves.htm\n      // - https://www.codeproject.com/KB/graphics/BezierSpline.aspx?msg=2956963\n      // - https://www.ian-ko.com/ET_GeoWizards/UserGuide/smooth.htm\n      // - https://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html\n      let curpos = points.getItem(0), prevCtlPt = null;\n      let d = [];\n      d.push(['M', curpos.x, ',', curpos.y, ' C'].join(''));\n      for (i = 1; i <= (N - 4); i += 3) {\n        let ct1 = points.getItem(i);\n        const ct2 = points.getItem(i + 1);\n        const end = points.getItem(i + 2);\n\n        // if the previous segment had a control point, we want to smooth out\n        // the control points on both sides\n        if (prevCtlPt) {\n          const newpts = smoothControlPoints(prevCtlPt, ct1, curpos);\n          if (newpts && newpts.length === 2) {\n            const prevArr = d[d.length - 1].split(',');\n            prevArr[2] = newpts[0].x;\n            prevArr[3] = newpts[0].y;\n            d[d.length - 1] = prevArr.join(',');\n            ct1 = newpts[1];\n          }\n        }\n\n        d.push([ct1.x, ct1.y, ct2.x, ct2.y, end.x, end.y].join(','));\n\n        curpos = end;\n        prevCtlPt = ct2;\n      }\n      // handle remaining line segments\n      d.push('L');\n      while (i < N) {\n        const pt = points.getItem(i);\n        d.push([pt.x, pt.y].join(','));\n        i++;\n      }\n      d = d.join(' ');\n\n      // create new path element\n      element = editorContext_.addSVGElementFromJson({\n        element: 'path',\n        curStyles: true,\n        attr: {\n          id: editorContext_.getId(),\n          d,\n          fill: 'none'\n        }\n      });\n      // No need to call \"changed\", as this is already done under mouseUp\n    }\n    return element;\n  };\n\n  return (/** @lends module:path.pathActions */ {\n    /**\n    * @param {MouseEvent} evt\n    * @param {Element} mouseTarget\n    * @param {Float} startX\n    * @param {Float} startY\n    * @returns {boolean|undefined}\n    */\n    mouseDown (evt, mouseTarget, startX, startY) {\n      let id;\n      if (editorContext_.getCurrentMode() === 'path') {\n        let mouseX = startX; // Was this meant to work with the other `mouseX`? (was defined globally so adding `let` to at least avoid a global)\n        let mouseY = startY; // Was this meant to work with the other `mouseY`? (was defined globally so adding `let` to at least avoid a global)\n\n        const currentZoom = editorContext_.getCurrentZoom();\n        let x = mouseX / currentZoom,\n          y = mouseY / currentZoom,\n          stretchy = getElem('path_stretch_line');\n        newPoint = [x, y];\n\n        if (editorContext_.getGridSnapping()) {\n          x = snapToGrid(x);\n          y = snapToGrid(y);\n          mouseX = snapToGrid(mouseX);\n          mouseY = snapToGrid(mouseY);\n        }\n\n        if (!stretchy) {\n          stretchy = document.createElementNS(NS.SVG, 'path');\n          assignAttributes(stretchy, {\n            id: 'path_stretch_line',\n            stroke: '#22C',\n            'stroke-width': '0.5',\n            fill: 'none'\n          });\n          stretchy = getElem('selectorParentGroup').appendChild(stretchy);\n        }\n        stretchy.setAttribute('display', 'inline');\n\n        let keep = null;\n        let index;\n        // if pts array is empty, create path element with M at current point\n        const drawnPath = editorContext_.getDrawnPath();\n        if (!drawnPath) {\n          const dAttr = 'M' + x + ',' + y + ' '; // Was this meant to work with the other `dAttr`? (was defined globally so adding `var` to at least avoid a global)\n          /* drawnPath = */ editorContext_.setDrawnPath(editorContext_.addSVGElementFromJson({\n            element: 'path',\n            curStyles: true,\n            attr: {\n              d: dAttr,\n              id: editorContext_.getNextId(),\n              opacity: editorContext_.getOpacity() / 2\n            }\n          }));\n          // set stretchy line to first point\n          stretchy.setAttribute('d', ['M', mouseX, mouseY, mouseX, mouseY].join(' '));\n          index = subpath ? path.segs.length : 0;\n          addPointGrip(index, mouseX, mouseY);\n        } else {\n          // determine if we clicked on an existing point\n          const seglist = drawnPath.pathSegList;\n          let i = seglist.numberOfItems;\n          const FUZZ = 6 / currentZoom;\n          let clickOnPoint = false;\n          while (i) {\n            i--;\n            const item = seglist.getItem(i);\n            const px = item.x, py = item.y;\n            // found a matching point\n            if (x >= (px - FUZZ) && x <= (px + FUZZ) &&\n              y >= (py - FUZZ) && y <= (py + FUZZ)\n            ) {\n              clickOnPoint = true;\n              break;\n            }\n          }\n\n          // get path element that we are in the process of creating\n          id = editorContext_.getId();\n\n          // Remove previous path object if previously created\n          removePath_(id);\n\n          const newpath = getElem(id);\n          let newseg;\n          let sSeg;\n          const len = seglist.numberOfItems;\n          // if we clicked on an existing point, then we are done this path, commit it\n          // (i, i+1) are the x,y that were clicked on\n          if (clickOnPoint) {\n            // if clicked on any other point but the first OR\n            // the first point was clicked on and there are less than 3 points\n            // then leave the path open\n            // otherwise, close the path\n            if (i <= 1 && len >= 2) {\n              // Create end segment\n              const absX = seglist.getItem(0).x;\n              const absY = seglist.getItem(0).y;\n\n              sSeg = stretchy.pathSegList.getItem(1);\n              if (sSeg.pathSegType === 4) {\n                newseg = drawnPath.createSVGPathSegLinetoAbs(absX, absY);\n              } else {\n                newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                  absX,\n                  absY,\n                  sSeg.x1 / currentZoom,\n                  sSeg.y1 / currentZoom,\n                  absX,\n                  absY\n                );\n              }\n\n              const endseg = drawnPath.createSVGPathSegClosePath();\n              seglist.appendItem(newseg);\n              seglist.appendItem(endseg);\n            } else if (len < 3) {\n              keep = false;\n              return keep;\n            }\n            $(stretchy).remove();\n\n            // This will signal to commit the path\n            // const element = newpath; // Other event handlers define own `element`, so this was probably not meant to interact with them or one which shares state (as there were none); I therefore adding a missing `var` to avoid a global\n            /* drawnPath = */ editorContext_.setDrawnPath(null);\n            editorContext_.setStarted(false);\n\n            if (subpath) {\n              if (path.matrix) {\n                editorContext_.remapElement(newpath, {}, path.matrix.inverse());\n              }\n\n              const newD = newpath.getAttribute('d');\n              const origD = $(path.elem).attr('d');\n              $(path.elem).attr('d', origD + newD);\n              $(newpath).remove();\n              if (path.matrix) {\n                recalcRotatedPath();\n              }\n              init();\n              pathActions.toEditMode(path.elem);\n              path.selectPt();\n              return false;\n            }\n          // else, create a new point, update path element\n          } else {\n            // Checks if current target or parents are #svgcontent\n            if (!$.contains(\n              editorContext_.getContainer(),\n              editorContext_.getMouseTarget(evt)\n            )) {\n              // Clicked outside canvas, so don't make point\n              // console.log('Clicked outside canvas');\n              return false;\n            }\n\n            const num = drawnPath.pathSegList.numberOfItems;\n            const last = drawnPath.pathSegList.getItem(num - 1);\n            const lastx = last.x, lasty = last.y;\n\n            if (evt.shiftKey) {\n              const xya = snapToAngle(lastx, lasty, x, y);\n              ({x, y} = xya);\n            }\n\n            // Use the segment defined by stretchy\n            sSeg = stretchy.pathSegList.getItem(1);\n            if (sSeg.pathSegType === 4) {\n              newseg = drawnPath.createSVGPathSegLinetoAbs(\n                editorContext_.round(x),\n                editorContext_.round(y)\n              );\n            } else {\n              newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(\n                editorContext_.round(x),\n                editorContext_.round(y),\n                sSeg.x1 / currentZoom,\n                sSeg.y1 / currentZoom,\n                sSeg.x2 / currentZoom,\n                sSeg.y2 / currentZoom\n              );\n            }\n\n            drawnPath.pathSegList.appendItem(newseg);\n\n            x *= currentZoom;\n            y *= currentZoom;\n\n            // set stretchy line to latest point\n            stretchy.setAttribute('d', ['M', x, y, x, y].join(' '));\n            index = num;\n            if (subpath) { index += path.segs.length; }\n            addPointGrip(index, x, y);\n          }\n          // keep = true;\n        }\n\n        return undefined;\n      }\n\n      // TODO: Make sure currentPath isn't null at this point\n      if (!path) { return undefined; }\n\n      path.storeD();\n\n      ({id} = evt.target);\n      let curPt;\n      if (id.substr(0, 14) === 'pathpointgrip_') {\n        // Select this point\n        curPt = path.cur_pt = parseInt(id.substr(14));\n        path.dragging = [startX, startY];\n        const seg = path.segs[curPt];\n\n        // only clear selection if shift is not pressed (otherwise, add\n        // node to selection)\n        if (!evt.shiftKey) {\n          if (path.selected_pts.length <= 1 || !seg.selected) {\n            path.clearSelection();\n          }\n          path.addPtsToSelection(curPt);\n        } else if (seg.selected) {\n          path.removePtFromSelection(curPt);\n        } else {\n          path.addPtsToSelection(curPt);\n        }\n      } else if (id.startsWith('ctrlpointgrip_')) {\n        path.dragging = [startX, startY];\n\n        const parts = id.split('_')[1].split('c');\n        curPt = Number(parts[0]);\n        const ctrlNum = Number(parts[1]);\n        path.selectPt(curPt, ctrlNum);\n      }\n\n      // Start selection box\n      if (!path.dragging) {\n        let rubberBox = editorContext_.getRubberBox();\n        if (isNullish(rubberBox)) {\n          rubberBox = editorContext_.setRubberBox(\n            editorContext_.selectorManager.getRubberBandBox()\n          );\n        }\n        const currentZoom = editorContext_.getCurrentZoom();\n        assignAttributes(rubberBox, {\n          x: startX * currentZoom,\n          y: startY * currentZoom,\n          width: 0,\n          height: 0,\n          display: 'inline'\n        }, 100);\n      }\n      return undefined;\n    },\n    /**\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {undefined}\n    */\n    mouseMove (mouseX, mouseY) {\n      const currentZoom = editorContext_.getCurrentZoom();\n      hasMoved = true;\n      const drawnPath = editorContext_.getDrawnPath();\n      if (editorContext_.getCurrentMode() === 'path') {\n        if (!drawnPath) { return; }\n        const seglist = drawnPath.pathSegList;\n        const index = seglist.numberOfItems - 1;\n\n        if (newPoint) {\n          // First point\n          // if (!index) { return; }\n\n          // Set control points\n          const pointGrip1 = addCtrlGrip('1c1');\n          const pointGrip2 = addCtrlGrip('0c2');\n\n          // dragging pointGrip1\n          pointGrip1.setAttribute('cx', mouseX);\n          pointGrip1.setAttribute('cy', mouseY);\n          pointGrip1.setAttribute('display', 'inline');\n\n          const ptX = newPoint[0];\n          const ptY = newPoint[1];\n\n          // set curve\n          // const seg = seglist.getItem(index);\n          const curX = mouseX / currentZoom;\n          const curY = mouseY / currentZoom;\n          const altX = (ptX + (ptX - curX));\n          const altY = (ptY + (ptY - curY));\n\n          pointGrip2.setAttribute('cx', altX * currentZoom);\n          pointGrip2.setAttribute('cy', altY * currentZoom);\n          pointGrip2.setAttribute('display', 'inline');\n\n          const ctrlLine = getCtrlLine(1);\n          assignAttributes(ctrlLine, {\n            x1: mouseX,\n            y1: mouseY,\n            x2: altX * currentZoom,\n            y2: altY * currentZoom,\n            display: 'inline'\n          });\n\n          if (index === 0) {\n            firstCtrl = [mouseX, mouseY];\n          } else {\n            const last = seglist.getItem(index - 1);\n            let lastX = last.x;\n            let lastY = last.y;\n\n            if (last.pathSegType === 6) {\n              lastX += (lastX - last.x2);\n              lastY += (lastY - last.y2);\n            } else if (firstCtrl) {\n              lastX = firstCtrl[0] / currentZoom;\n              lastY = firstCtrl[1] / currentZoom;\n            }\n            replacePathSeg(6, index, [ptX, ptY, lastX, lastY, altX, altY], drawnPath);\n          }\n        } else {\n          const stretchy = getElem('path_stretch_line');\n          if (stretchy) {\n            const prev = seglist.getItem(index);\n            if (prev.pathSegType === 6) {\n              const prevX = prev.x + (prev.x - prev.x2);\n              const prevY = prev.y + (prev.y - prev.y2);\n              replacePathSeg(6, 1, [mouseX, mouseY, prevX * currentZoom, prevY * currentZoom, mouseX, mouseY], stretchy);\n            } else if (firstCtrl) {\n              replacePathSeg(6, 1, [mouseX, mouseY, firstCtrl[0], firstCtrl[1], mouseX, mouseY], stretchy);\n            } else {\n              replacePathSeg(4, 1, [mouseX, mouseY], stretchy);\n            }\n          }\n        }\n        return;\n      }\n      // if we are dragging a point, let's move it\n      if (path.dragging) {\n        const pt = getPointFromGrip({\n          x: path.dragging[0],\n          y: path.dragging[1]\n        }, path);\n        const mpt = getPointFromGrip({\n          x: mouseX,\n          y: mouseY\n        }, path);\n        const diffX = mpt.x - pt.x;\n        const diffY = mpt.y - pt.y;\n        path.dragging = [mouseX, mouseY];\n\n        if (path.dragctrl) {\n          path.moveCtrl(diffX, diffY);\n        } else {\n          path.movePts(diffX, diffY);\n        }\n      } else {\n        path.selected_pts = [];\n        path.eachSeg(function (i) {\n          const seg = this; // eslint-disable-line consistent-this\n          if (!seg.next && !seg.prev) { return; }\n\n          // const {item} = seg;\n          const rubberBox = editorContext_.getRubberBox();\n          const rbb = rubberBox.getBBox();\n\n          const pt = getGripPt(seg);\n          const ptBb = {\n            x: pt.x,\n            y: pt.y,\n            width: 0,\n            height: 0\n          };\n\n          const sel = rectsIntersect(rbb, ptBb);\n\n          this.select(sel);\n          // Note that addPtsToSelection is not being run\n          if (sel) { path.selected_pts.push(seg.index); }\n        });\n      }\n    },\n    /**\n     * @typedef module:path.keepElement\n     * @type {PlainObject}\n     * @property {boolean} keep\n     * @property {Element} element\n     */\n    /**\n    * @param {Event} evt\n    * @param {Element} element\n    * @param {Float} mouseX\n    * @param {Float} mouseY\n    * @returns {module:path.keepElement|undefined}\n    */\n    mouseUp (evt, element, mouseX, mouseY) {\n      const drawnPath = editorContext_.getDrawnPath();\n      // Create mode\n      if (editorContext_.getCurrentMode() === 'path') {\n        newPoint = null;\n        if (!drawnPath) {\n          element = getElem(editorContext_.getId());\n          editorContext_.setStarted(false);\n          firstCtrl = null;\n        }\n\n        return {\n          keep: true,\n          element\n        };\n      }\n\n      // Edit mode\n      const rubberBox = editorContext_.getRubberBox();\n      if (path.dragging) {\n        const lastPt = path.cur_pt;\n\n        path.dragging = false;\n        path.dragctrl = false;\n        path.update();\n\n        if (hasMoved) {\n          path.endChanges('Move path point(s)');\n        }\n\n        if (!evt.shiftKey && !hasMoved) {\n          path.selectPt(lastPt);\n        }\n      } else if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n        // Done with multi-node-select\n        rubberBox.setAttribute('display', 'none');\n\n        if (rubberBox.getAttribute('width') <= 2 && rubberBox.getAttribute('height') <= 2) {\n          pathActions.toSelectMode(evt.target);\n        }\n\n      // else, move back to select mode\n      } else {\n        pathActions.toSelectMode(evt.target);\n      }\n      hasMoved = false;\n      return undefined;\n    },\n    /**\n    * @param {Element} element\n    * @returns {undefined}\n    */\n    toEditMode (element) {\n      path = getPath_(element);\n      editorContext_.setCurrentMode('pathedit');\n      editorContext_.clearSelection();\n      path.show(true).update();\n      path.oldbbox = utilsGetBBox(path.elem);\n      subpath = false;\n    },\n    /**\n    * @param {Element} elem\n    * @fires module:svgcanvas.SvgCanvas#event:selected\n    * @returns {undefined}\n    */\n    toSelectMode (elem) {\n      const selPath = (elem === path.elem);\n      editorContext_.setCurrentMode('select');\n      path.show(false);\n      currentPath = false;\n      editorContext_.clearSelection();\n\n      if (path.matrix) {\n        // Rotated, so may need to re-calculate the center\n        recalcRotatedPath();\n      }\n\n      if (selPath) {\n        editorContext_.call('selected', [elem]);\n        editorContext_.addToSelection([elem], true);\n      }\n    },\n    /**\n    * @param {boolean} on\n    * @returns {undefined}\n    */\n    addSubPath (on) {\n      if (on) {\n        // Internally we go into \"path\" mode, but in the UI it will\n        // still appear as if in \"pathedit\" mode.\n        editorContext_.setCurrentMode('path');\n        subpath = true;\n      } else {\n        pathActions.clear(true);\n        pathActions.toEditMode(path.elem);\n      }\n    },\n    /**\n    * @param {Element} target\n    * @returns {undefined}\n    */\n    select (target) {\n      if (currentPath === target) {\n        pathActions.toEditMode(target);\n        editorContext_.setCurrentMode('pathedit');\n      // going into pathedit mode\n      } else {\n        currentPath = target;\n      }\n    },\n    /**\n    * @fires module:svgcanvas.SvgCanvas#event:changed\n    * @returns {undefined}\n    */\n    reorient () {\n      const elem = editorContext_.getSelectedElements()[0];\n      if (!elem) { return; }\n      const angl = getRotationAngle(elem);\n      if (angl === 0) { return; }\n\n      const batchCmd = new BatchCommand('Reorient path');\n      const changes = {\n        d: elem.getAttribute('d'),\n        transform: elem.getAttribute('transform')\n      };\n      batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n      editorContext_.clearSelection();\n      this.resetOrientation(elem);\n\n      editorContext_.addCommandToHistory(batchCmd);\n\n      // Set matrix to null\n      getPath_(elem).show(false).matrix = null;\n\n      this.clear();\n\n      editorContext_.addToSelection([elem], true);\n      editorContext_.call('changed', editorContext_.getSelectedElements());\n    },\n\n    /**\n    * @param {boolean} remove Not in use\n    * @returns {undefined}\n    */\n    clear (remove) {\n      const drawnPath = editorContext_.getDrawnPath();\n      currentPath = null;\n      if (drawnPath) {\n        const elem = getElem(editorContext_.getId());\n        $(getElem('path_stretch_line')).remove();\n        $(elem).remove();\n        $(getElem('pathpointgrip_container')).find('*').attr('display', 'none');\n        firstCtrl = null;\n        editorContext_.setDrawnPath(null);\n        editorContext_.setStarted(false);\n      } else if (editorContext_.getCurrentMode() === 'pathedit') {\n        this.toSelectMode();\n      }\n      if (path) { path.init().show(false); }\n    },\n    /**\n    * @param {?(Element|SVGPathElement)} pth\n    * @returns {false|undefined}\n    */\n    resetOrientation (pth) {\n      if (isNullish(pth) || pth.nodeName !== 'path') { return false; }\n      const tlist = getTransformList(pth);\n      const m = transformListToTransform(tlist).matrix;\n      tlist.clear();\n      pth.removeAttribute('transform');\n      const segList = pth.pathSegList;\n\n      // Opera/win/non-EN throws an error here.\n      // TODO: Find out why!\n      // Presumed fixed in Opera 10.5, so commented out for now\n\n      // try {\n      const len = segList.numberOfItems;\n      // } catch(err) {\n      //   const fixed_d = pathActions.convertPath(pth);\n      //   pth.setAttribute('d', fixed_d);\n      //   segList = pth.pathSegList;\n      //   const len = segList.numberOfItems;\n      // }\n      // let lastX, lastY;\n      for (let i = 0; i < len; ++i) {\n        const seg = segList.getItem(i);\n        const type = seg.pathSegType;\n        if (type === 1) { continue; }\n        const pts = [];\n        $.each(['', 1, 2], function (j, n) {\n          const x = seg['x' + n], y = seg['y' + n];\n          if (x !== undefined && y !== undefined) {\n            const pt = transformPoint(x, y, m);\n            pts.splice(pts.length, 0, pt.x, pt.y);\n          }\n        });\n        replacePathSeg(type, i, pts, pth);\n      }\n\n      reorientGrads(pth, m);\n      return undefined;\n    },\n    /**\n    * @returns {undefined}\n    */\n    zoomChange () {\n      if (editorContext_.getCurrentMode() === 'pathedit') {\n        path.update();\n      }\n    },\n    /**\n    * @typedef {PlainObject} module:path.NodePoint\n    * @property {Float} x\n    * @property {Float} y\n    * @property {Integer} type\n    */\n    /**\n    * @returns {module:path.NodePoint}\n    */\n    getNodePoint () {\n      const selPt = path.selected_pts.length ? path.selected_pts[0] : 1;\n\n      const seg = path.segs[selPt];\n      return {\n        x: seg.item.x,\n        y: seg.item.y,\n        type: seg.type\n      };\n    },\n    /**\n    * @param {boolean} linkPoints\n    * @returns {undefined}\n    */\n    linkControlPoints (linkPoints) {\n      setLinkControlPoints(linkPoints);\n    },\n    /**\n    * @returns {undefined}\n    */\n    clonePathNode () {\n      path.storeD();\n\n      const selPts = path.selected_pts;\n      // const {segs} = path;\n\n      let i = selPts.length;\n      const nums = [];\n\n      while (i--) {\n        const pt = selPts[i];\n        path.addSeg(pt);\n\n        nums.push(pt + i);\n        nums.push(pt + i + 1);\n      }\n      path.init().addPtsToSelection(nums);\n\n      path.endChanges('Clone path node(s)');\n    },\n    /**\n    * @returns {undefined}\n    */\n    opencloseSubPath () {\n      const selPts = path.selected_pts;\n      // Only allow one selected node for now\n      if (selPts.length !== 1) { return; }\n\n      const {elem} = path;\n      const list = elem.pathSegList;\n\n      // const len = list.numberOfItems;\n\n      const index = selPts[0];\n\n      let openPt = null;\n      let startItem = null;\n\n      // Check if subpath is already open\n      path.eachSeg(function (i) {\n        if (this.type === 2 && i <= index) {\n          startItem = this.item;\n        }\n        if (i <= index) { return true; }\n        if (this.type === 2) {\n          // Found M first, so open\n          openPt = i;\n          return false;\n        }\n        if (this.type === 1) {\n          // Found Z first, so closed\n          openPt = false;\n          return false;\n        }\n        return true;\n      });\n\n      if (isNullish(openPt)) {\n        // Single path, so close last seg\n        openPt = path.segs.length - 1;\n      }\n\n      if (openPt !== false) {\n        // Close this path\n\n        // Create a line going to the previous \"M\"\n        const newseg = elem.createSVGPathSegLinetoAbs(startItem.x, startItem.y);\n\n        const closer = elem.createSVGPathSegClosePath();\n        if (openPt === path.segs.length - 1) {\n          list.appendItem(newseg);\n          list.appendItem(closer);\n        } else {\n          insertItemBefore(elem, closer, openPt);\n          insertItemBefore(elem, newseg, openPt);\n        }\n\n        path.init().selectPt(openPt + 1);\n        return;\n      }\n\n      // M 1,1 L 2,2 L 3,3 L 1,1 z // open at 2,2\n      // M 2,2 L 3,3 L 1,1\n\n      // M 1,1 L 2,2 L 1,1 z M 4,4 L 5,5 L6,6 L 5,5 z\n      // M 1,1 L 2,2 L 1,1 z [M 4,4] L 5,5 L(M)6,6 L 5,5 z\n\n      const seg = path.segs[index];\n\n      if (seg.mate) {\n        list.removeItem(index); // Removes last \"L\"\n        list.removeItem(index); // Removes the \"Z\"\n        path.init().selectPt(index - 1);\n        return;\n      }\n\n      let lastM, zSeg;\n\n      // Find this sub-path's closing point and remove\n      for (let i = 0; i < list.numberOfItems; i++) {\n        const item = list.getItem(i);\n\n        if (item.pathSegType === 2) {\n          // Find the preceding M\n          lastM = i;\n        } else if (i === index) {\n          // Remove it\n          list.removeItem(lastM);\n          // index--;\n        } else if (item.pathSegType === 1 && index < i) {\n          // Remove the closing seg of this subpath\n          zSeg = i - 1;\n          list.removeItem(i);\n          break;\n        }\n      }\n\n      let num = (index - lastM) - 1;\n\n      while (num--) {\n        insertItemBefore(elem, list.getItem(lastM), zSeg);\n      }\n\n      const pt = list.getItem(lastM);\n\n      // Make this point the new \"M\"\n      replacePathSeg(2, lastM, [pt.x, pt.y]);\n\n      // i = index; // i is local here, so has no effect; what was the intent for this?\n\n      path.init().selectPt(0);\n    },\n    /**\n    * @returns {undefined}\n    */\n    deletePathNode () {\n      if (!pathActions.canDeleteNodes) { return; }\n      path.storeD();\n\n      const selPts = path.selected_pts;\n\n      let i = selPts.length;\n      while (i--) {\n        const pt = selPts[i];\n        path.deleteSeg(pt);\n      }\n\n      // Cleanup\n      const cleanup = function () {\n        const segList = path.elem.pathSegList;\n        let len = segList.numberOfItems;\n\n        const remItems = function (pos, count) {\n          while (count--) {\n            segList.removeItem(pos);\n          }\n        };\n\n        if (len <= 1) { return true; }\n\n        while (len--) {\n          const item = segList.getItem(len);\n          if (item.pathSegType === 1) {\n            const prev = segList.getItem(len - 1);\n            const nprev = segList.getItem(len - 2);\n            if (prev.pathSegType === 2) {\n              remItems(len - 1, 2);\n              cleanup();\n              break;\n            } else if (nprev.pathSegType === 2) {\n              remItems(len - 2, 3);\n              cleanup();\n              break;\n            }\n          } else if (item.pathSegType === 2) {\n            if (len > 0) {\n              const prevType = segList.getItem(len - 1).pathSegType;\n              // Path has M M\n              if (prevType === 2) {\n                remItems(len - 1, 1);\n                cleanup();\n                break;\n              // Entire path ends with Z M\n              } else if (prevType === 1 && segList.numberOfItems - 1 === len) {\n                remItems(len, 1);\n                cleanup();\n                break;\n              }\n            }\n          }\n        }\n        return false;\n      };\n\n      cleanup();\n\n      // Completely delete a path with 1 or 0 segments\n      if (path.elem.pathSegList.numberOfItems <= 1) {\n        pathActions.toSelectMode(path.elem);\n        editorContext_.canvas.deleteSelectedElements();\n        return;\n      }\n\n      path.init();\n      path.clearSelection();\n\n      // TODO: Find right way to select point now\n      // path.selectPt(selPt);\n      if (window.opera) { // Opera repaints incorrectly\n        const cp = $(path.elem);\n        cp.attr('d', cp.attr('d'));\n      }\n      path.endChanges('Delete path node(s)');\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Smooth polyline into path\n    * @function module:path.pathActions.smoothPolylineIntoPath\n    * @see module:path~smoothPolylineIntoPath\n    */\n    smoothPolylineIntoPath,\n    /**\n    * @param {?Integer} v See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n    * @returns {undefined}\n    */\n    setSegType (v) {\n      path.setSegType(v);\n    },\n    /**\n    * @param {string} attr\n    * @param {Float} newValue\n    * @returns {undefined}\n    */\n    moveNode (attr, newValue) {\n      const selPts = path.selected_pts;\n      if (!selPts.length) { return; }\n\n      path.storeD();\n\n      // Get first selected point\n      const seg = path.segs[selPts[0]];\n      const diff = {x: 0, y: 0};\n      diff[attr] = newValue - seg.item[attr];\n\n      seg.move(diff.x, diff.y);\n      path.endChanges('Move path point');\n    },\n    /**\n    * @param {Element} elem\n    * @returns {undefined}\n    */\n    fixEnd (elem) {\n      // Adds an extra segment if the last seg before a Z doesn't end\n      // at its M point\n      // M0,0 L0,100 L100,100 z\n      const segList = elem.pathSegList;\n      const len = segList.numberOfItems;\n      let lastM;\n      for (let i = 0; i < len; ++i) {\n        const item = segList.getItem(i);\n        if (item.pathSegType === 2) {\n          lastM = item;\n        }\n\n        if (item.pathSegType === 1) {\n          const prev = segList.getItem(i - 1);\n          if (prev.x !== lastM.x || prev.y !== lastM.y) {\n            // Add an L segment here\n            const newseg = elem.createSVGPathSegLinetoAbs(lastM.x, lastM.y);\n            insertItemBefore(elem, newseg, i);\n            // Can this be done better?\n            pathActions.fixEnd(elem);\n            break;\n          }\n        }\n      }\n      if (isWebkit()) { editorContext_.resetD(elem); }\n    },\n    // Can't seem to use `@borrows` here, so using `@see`\n    /**\n    * Convert a path to one with only absolute or relative values\n    * @function module:path.pathActions.convertPath\n    * @see module:path.convertPath\n    */\n    convertPath\n  });\n})();\n// end pathActions\n","/* globals jQuery */\n/**\n * Miscellaneous utilities\n * @module utilities\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport './svgpathseg.js';\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {setUnitAttr, getTypeMap} from './units.js';\nimport {convertPath} from './path.js';\nimport {\n  hasMatrixTransform, transformListToTransform, transformBox\n} from './math.js';\nimport {\n  isWebkit, supportsHVLineContainerBBox, supportsPathBBox, supportsXpath,\n  supportsSelectors\n} from './browser.js';\n\n// Constants\nconst $ = jQueryPluginSVG(jQuery);\n\n// String used to encode base64.\nconst KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n\n// Much faster than running getBBox() every time\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst visElemsArr = visElems.split(',');\n// const hidElems = 'clipPath,defs,desc,feGaussianBlur,filter,linearGradient,marker,mask,metadata,pattern,radialGradient,stop,switch,symbol,title,textPath';\n\nlet editorContext_ = null;\nlet domdoc_ = null;\nlet domcontainer_ = null;\nlet svgroot_ = null;\n\n/**\n* Object with the following keys/values\n* @typedef {PlainObject} module:utilities.SVGElementJSON\n* @property {string} element - Tag name of the SVG element to create\n* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element\n* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first\n* @property {module:utilities.SVGElementJSON[]} [children] - Data objects to be added recursively as children\n* @property {string} [namespace=\"http://www.w3.org/2000/svg\"] - Indicate a (non-SVG) namespace\n*/\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:utilities.EditorContext\n * @property {module:path.pathActions} pathActions\n */\n/**\n * @function module:utilities.EditorContext#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * Create a new SVG element based on the given object keys/values and add it\n * to the current layer.\n * The element will be run through `cleanupElement` before being returned\n * @function module:utilities.EditorContext#addSVGElementFromJson\n * @param {module:utilities.SVGElementJSON} data\n * @returns {Element} The new element\n*/\n/**\n * @function module:utilities.EditorContext#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:utilities.EditorContext#getDOMDocument\n * @returns {HTMLDocument}\n*/\n/**\n * @function module:utilities.EditorContext#getDOMContainer\n * @returns {HTMLElement}\n*/\n/**\n * @function module:utilities.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n/**\n * @function module:utilities.EditorContext#getBaseUnit\n * @returns {string}\n*/\n/**\n * @function module:utilities.EditorContext#getSnappingStep\n * @returns {Float|string}\n*/\n\n/**\n* @function module:utilities.init\n* @param {module:utilities.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n  domdoc_ = editorContext.getDOMDocument();\n  domcontainer_ = editorContext.getDOMContainer();\n  svgroot_ = editorContext.getSVGRoot();\n};\n\n/**\n * Used to prevent the [Billion laughs attack]{@link https://en.wikipedia.org/wiki/Billion_laughs_attack}.\n * @function module:utilities.dropXMLInteralSubset\n * @param {string} str String to be processed\n * @returns {string} The string with entity declarations in the internal subset removed\n * @todo This might be needed in other places `parseFromString` is used even without LGTM flagging\n */\nexport const dropXMLInteralSubset = (str) => {\n  return str.replace(/(<!DOCTYPE\\s+\\w*\\s*\\[).*(\\?\\]>)/, '$1$2');\n};\n\n/**\n* Converts characters in a string to XML-friendly entities.\n* @function module:utilities.toXml\n* @example `&` becomes `&amp;`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport const toXml = function (str) {\n  // &apos; is ok in XML, but not HTML\n  // &gt; does not normally need escaping, though it can if within a CDATA expression (and preceded by \"]]\")\n  return str\n    .replace(/&/g, '&amp;')\n    .replace(/</g, '&lt;')\n    .replace(/>/g, '&gt;')\n    .replace(/\"/g, '&quot;')\n    .replace(/'/g, '&#x27;'); // Note: `&apos;` is XML only\n};\n\n/**\n* Converts XML entities in a string to single characters.\n* @function module:utilities.fromXml\n* @example `&amp;` becomes `&`\n* @param {string} str - The string to be converted\n* @returns {string} The converted string\n*/\nexport function fromXml (str) {\n  return $('<p/>').html(str).text();\n}\n\n// This code was written by Tyler Akins and has been placed in the\n// public domain.  It would be nice if you left this header intact.\n// Base64 code from Tyler Akins -- http://rumkin.com\n\n// schiller: Removed string concatenation in favour of Array.join() optimization,\n//        also precalculate the size of the array needed.\n\n/**\n* Converts a string to base64.\n* @function module:utilities.encode64\n* @param {string} input\n* @returns {string} Base64 output\n*/\nexport function encode64 (input) {\n  // base64 strings are 4/3 larger than the original string\n  input = encodeUTF8(input); // convert non-ASCII characters\n  // input = convertToXMLReferences(input);\n  if (window.btoa) {\n    return window.btoa(input); // Use native if available\n  }\n  const output = new Array(Math.floor((input.length + 2) / 3) * 4);\n\n  let i = 0,\n    p = 0;\n  do {\n    const chr1 = input.charCodeAt(i++);\n    const chr2 = input.charCodeAt(i++);\n    const chr3 = input.charCodeAt(i++);\n\n    /* eslint-disable no-bitwise */\n    const enc1 = chr1 >> 2;\n    const enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n\n    let enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n    let enc4 = chr3 & 63;\n    /* eslint-enable no-bitwise */\n\n    if (isNaN(chr2)) {\n      enc3 = 64;\n      enc4 = 64;\n    } else if (isNaN(chr3)) {\n      enc4 = 64;\n    }\n\n    output[p++] = KEYSTR.charAt(enc1);\n    output[p++] = KEYSTR.charAt(enc2);\n    output[p++] = KEYSTR.charAt(enc3);\n    output[p++] = KEYSTR.charAt(enc4);\n  } while (i < input.length);\n\n  return output.join('');\n}\n\n/**\n* Converts a string from base64.\n* @function module:utilities.decode64\n* @param {string} input Base64-encoded input\n* @returns {string} Decoded output\n*/\nexport function decode64 (input) {\n  if (window.atob) {\n    return decodeUTF8(window.atob(input));\n  }\n\n  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =\n  input = input.replace(/[^A-Za-z0-9+/=]/g, '');\n\n  let output = '';\n  let i = 0;\n\n  do {\n    const enc1 = KEYSTR.indexOf(input.charAt(i++));\n    const enc2 = KEYSTR.indexOf(input.charAt(i++));\n    const enc3 = KEYSTR.indexOf(input.charAt(i++));\n    const enc4 = KEYSTR.indexOf(input.charAt(i++));\n\n    /* eslint-disable no-bitwise */\n    const chr1 = (enc1 << 2) | (enc2 >> 4);\n    const chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n    const chr3 = ((enc3 & 3) << 6) | enc4;\n    /* eslint-enable no-bitwise */\n\n    output += String.fromCharCode(chr1);\n\n    if (enc3 !== 64) {\n      output += String.fromCharCode(chr2);\n    }\n    if (enc4 !== 64) {\n      output += String.fromCharCode(chr3);\n    }\n  } while (i < input.length);\n  return decodeUTF8(output);\n}\n\n/**\n* @function module:utilities.decodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport function decodeUTF8 (argString) {\n  return decodeURIComponent(escape(argString));\n}\n\n// codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded\n/**\n* @function module:utilities.encodeUTF8\n* @param {string} argString\n* @returns {string}\n*/\nexport const encodeUTF8 = function (argString) {\n  return unescape(encodeURIComponent(argString));\n};\n\n/**\n * Convert dataURL to object URL.\n * @function module:utilities.dataURLToObjectURL\n * @param {string} dataurl\n * @returns {string} object URL or empty string\n */\nexport const dataURLToObjectURL = function (dataurl) {\n  if (typeof Uint8Array === 'undefined' || typeof Blob === 'undefined' || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  const arr = dataurl.split(','),\n    mime = arr[0].match(/:(.*?);/)[1],\n    bstr = atob(arr[1]);\n  let n = bstr.length;\n  const u8arr = new Uint8Array(n);\n  while (n--) {\n    u8arr[n] = bstr.charCodeAt(n);\n  }\n  const blob = new Blob([u8arr], {type: mime});\n  return URL.createObjectURL(blob);\n};\n\n/**\n * Get object URL for a blob object.\n * @function module:utilities.createObjectURL\n * @param {Blob} blob A Blob object or File object\n * @returns {string} object URL or empty string\n */\nexport const createObjectURL = function (blob) {\n  if (!blob || typeof URL === 'undefined' || !URL.createObjectURL) {\n    return '';\n  }\n  return URL.createObjectURL(blob);\n};\n\n/**\n * @property {string} blankPageObjectURL\n */\nexport const blankPageObjectURL = (function () {\n  if (typeof Blob === 'undefined') {\n    return '';\n  }\n  const blob = new Blob(['<html><head><title>SVG-edit</title></head><body>&nbsp;</body></html>'], {type: 'text/html'});\n  return createObjectURL(blob);\n})();\n\n/**\n* Converts a string to use XML references (for non-ASCII).\n* @function module:utilities.convertToXMLReferences\n* @param {string} input\n* @returns {string} Decimal numeric character references\n*/\nexport const convertToXMLReferences = function (input) {\n  let output = '';\n  [...input].forEach((ch) => {\n    const c = ch.charCodeAt();\n    if (c <= 127) {\n      output += ch;\n    } else {\n      output += `&#${c};`;\n    }\n  });\n  return output;\n};\n\n/**\n* Cross-browser compatible method of converting a string to an XML tree.\n* Found this function [here]{@link http://groups.google.com/group/jquery-dev/browse_thread/thread/c6d11387c580a77f}.\n* @function module:utilities.text2xml\n* @param {string} sXML\n* @throws {Error}\n* @returns {XMLDocument}\n*/\nexport const text2xml = function (sXML) {\n  if (sXML.includes('<svg:svg')) {\n    sXML = sXML.replace(/<(\\/?)svg:/g, '<$1').replace('xmlns:svg', 'xmlns');\n  }\n\n  let out, dXML;\n  try {\n    dXML = (window.DOMParser) ? new DOMParser() : new window.ActiveXObject('Microsoft.XMLDOM');\n    dXML.async = false;\n  } catch (e) {\n    throw new Error('XML Parser could not be instantiated');\n  }\n  try {\n    if (dXML.loadXML) {\n      out = (dXML.loadXML(sXML)) ? dXML : false;\n    } else {\n      out = dXML.parseFromString(sXML, 'text/xml');\n    }\n  } catch (e2) { throw new Error('Error parsing XML string'); }\n  return out;\n};\n\n/**\n* @typedef {PlainObject} module:utilities.BBoxObject (like `DOMRect`)\n* @property {Float} x\n* @property {Float} y\n* @property {Float} width\n* @property {Float} height\n*/\n\n/**\n* Converts a `SVGRect` into an object.\n* @function module:utilities.bboxToObj\n* @param {SVGRect} bbox - a SVGRect\n* @returns {module:utilities.BBoxObject} An object with properties names x, y, width, height.\n*/\nexport const bboxToObj = function ({x, y, width, height}) {\n  return {x, y, width, height};\n};\n\n/**\n* @callback module:utilities.TreeWalker\n* @param {Element} elem - DOM element being traversed\n* @returns {undefined}\n*/\n\n/**\n* Walks the tree and executes the callback on each element in a top-down fashion.\n* @function module:utilities.walkTree\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTree = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    cbFn(elem);\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n  }\n};\n\n/**\n* Walks the tree and executes the callback on each element in a depth-first fashion.\n* @function module:utilities.walkTreePost\n* @todo FIXME: Shouldn't this be calling walkTreePost?\n* @param {Element} elem - DOM element to traverse\n* @param {module:utilities.TreeWalker} cbFn - Callback function to run on each element\n* @returns {undefined}\n*/\nexport const walkTreePost = function (elem, cbFn) {\n  if (elem && elem.nodeType === 1) {\n    let i = elem.childNodes.length;\n    while (i--) {\n      walkTree(elem.childNodes.item(i), cbFn);\n    }\n    cbFn(elem);\n  }\n};\n\n/**\n* Extracts the URL from the `url(...)` syntax of some attributes.\n* Three variants:\n*  - `<circle fill=\"url(someFile.svg#foo)\" />`\n*  - `<circle fill=\"url('someFile.svg#foo')\" />`\n*  - `<circle fill='url(\"someFile.svg#foo\")' />`\n* @function module:utilities.getUrlFromAttr\n* @param {string} attrVal The attribute value as a string\n* @returns {string} String with just the URL, like \"someFile.svg#foo\"\n*/\nexport const getUrlFromAttr = function (attrVal) {\n  if (attrVal) {\n    // url('#somegrad')\n    if (attrVal.startsWith('url(\"')) {\n      return attrVal.substring(5, attrVal.indexOf('\"', 6));\n    }\n    // url('#somegrad')\n    if (attrVal.startsWith(\"url('\")) {\n      return attrVal.substring(5, attrVal.indexOf(\"'\", 6));\n    }\n    if (attrVal.startsWith('url(')) {\n      return attrVal.substring(4, attrVal.indexOf(')'));\n    }\n  }\n  return null;\n};\n\n/**\n* @function module:utilities.getHref\n* @param {Element} elem\n* @returns {string} The given element's `xlink:href` value\n*/\nexport let getHref = function (elem) { // eslint-disable-line import/no-mutable-exports\n  return elem.getAttributeNS(NS.XLINK, 'href');\n};\n\n/**\n* Sets the given element's `xlink:href` value.\n* @function module:utilities.setHref\n* @param {Element} elem\n* @param {string} val\n* @returns {undefined}\n*/\nexport let setHref = function (elem, val) { // eslint-disable-line import/no-mutable-exports\n  elem.setAttributeNS(NS.XLINK, 'xlink:href', val);\n};\n\n/**\n* @function module:utilities.findDefs\n* @returns {SVGDefsElement} The document's `<defs>` element, creating it first if necessary\n*/\nexport const findDefs = function () {\n  const svgElement = editorContext_.getSVGContent();\n  let defs = svgElement.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (defs.length > 0) {\n    defs = defs[0];\n  } else {\n    defs = svgElement.ownerDocument.createElementNS(NS.SVG, 'defs');\n    if (svgElement.firstChild) {\n      // first child is a comment, so call nextSibling\n      svgElement.insertBefore(defs, svgElement.firstChild.nextSibling);\n      // svgElement.firstChild.nextSibling.before(defs); // Not safe\n    } else {\n      svgElement.append(defs);\n    }\n  }\n  return defs;\n};\n\n// TODO(codedread): Consider moving the next to functions to bbox.js\n\n/**\n* Get correct BBox for a path in Webkit.\n* Converted from code found [here]{@link http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html}.\n* @function module:utilities.getPathBBox\n* @param {SVGPathElement} path - The path DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} A BBox-like object\n*/\nexport const getPathBBox = function (path) {\n  const seglist = path.pathSegList;\n  const tot = seglist.numberOfItems;\n\n  const bounds = [[], []];\n  const start = seglist.getItem(0);\n  let P0 = [start.x, start.y];\n\n  const getCalc = function (j, P1, P2, P3) {\n    return function (t) {\n      return Math.pow(1 - t, 3) * P0[j] +\n        3 * Math.pow(1 - t, 2) * t * P1[j] +\n        3 * (1 - t) * Math.pow(t, 2) * P2[j] +\n        Math.pow(t, 3) * P3[j];\n    };\n  };\n\n  for (let i = 0; i < tot; i++) {\n    const seg = seglist.getItem(i);\n\n    if (seg.x === undefined) { continue; }\n\n    // Add actual points to limits\n    bounds[0].push(P0[0]);\n    bounds[1].push(P0[1]);\n\n    if (seg.x1) {\n      const P1 = [seg.x1, seg.y1],\n        P2 = [seg.x2, seg.y2],\n        P3 = [seg.x, seg.y];\n\n      for (let j = 0; j < 2; j++) {\n        const calc = getCalc(j, P1, P2, P3);\n\n        const b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];\n        const a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];\n        const c = 3 * P1[j] - 3 * P0[j];\n\n        if (a === 0) {\n          if (b === 0) { continue; }\n          const t = -c / b;\n          if (t > 0 && t < 1) {\n            bounds[j].push(calc(t));\n          }\n          continue;\n        }\n        const b2ac = Math.pow(b, 2) - 4 * c * a;\n        if (b2ac < 0) { continue; }\n        const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);\n        if (t1 > 0 && t1 < 1) { bounds[j].push(calc(t1)); }\n        const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);\n        if (t2 > 0 && t2 < 1) { bounds[j].push(calc(t2)); }\n      }\n      P0 = P3;\n    } else {\n      bounds[0].push(seg.x);\n      bounds[1].push(seg.y);\n    }\n  }\n\n  const x = Math.min.apply(null, bounds[0]);\n  const w = Math.max.apply(null, bounds[0]) - x;\n  const y = Math.min.apply(null, bounds[1]);\n  const h = Math.max.apply(null, bounds[1]) - y;\n  return {\n    x,\n    y,\n    width: w,\n    height: h\n  };\n};\n\n/**\n* Get the given/selected element's bounding box object, checking for\n* horizontal/vertical lines (see issue 717)\n* Note that performance is currently terrible, so some way to improve would\n* be great.\n* @param {Element} selected - Container or `<use>` DOM element\n* @returns {DOMRect} Bounding box object\n*/\nfunction groupBBFix (selected) {\n  if (supportsHVLineContainerBBox()) {\n    try { return selected.getBBox(); } catch (e) {}\n  }\n  const ref = $.data(selected, 'ref');\n  let matched = null;\n  let ret, copy;\n\n  if (ref) {\n    copy = $(ref).children().clone().attr('visibility', 'hidden');\n    $(svgroot_).append(copy);\n    matched = copy.filter('line, path');\n  } else {\n    matched = $(selected).find('line, path');\n  }\n\n  let issue = false;\n  if (matched.length) {\n    matched.each(function () {\n      const bb = this.getBBox();\n      if (!bb.width || !bb.height) {\n        issue = true;\n      }\n    });\n    if (issue) {\n      const elems = ref ? copy : $(selected).children();\n      ret = getStrokedBBox(elems);\n    } else {\n      ret = selected.getBBox();\n    }\n  } else {\n    ret = selected.getBBox();\n  }\n  if (ref) {\n    copy.remove();\n  }\n  return ret;\n}\n\n/**\n* Get the given/selected element's bounding box object, convert it to be more\n* usable when necessary.\n* @function module:utilities.getBBox\n* @param {Element} elem - Optional DOM element to get the BBox for\n* @returns {module:utilities.BBoxObject} Bounding box object\n*/\nexport const getBBox = function (elem) {\n  const selected = elem || editorContext_.geSelectedElements()[0];\n  if (elem.nodeType !== 1) { return null; }\n  const elname = selected.nodeName;\n\n  let ret = null;\n  switch (elname) {\n  case 'text':\n    if (selected.textContent === '') {\n      selected.textContent = 'a'; // Some character needed for the selector to use.\n      ret = selected.getBBox();\n      selected.textContent = '';\n    } else if (selected.getBBox) {\n      ret = selected.getBBox();\n    }\n    break;\n  case 'path':\n    if (!supportsPathBBox()) {\n      ret = getPathBBox(selected);\n    } else if (selected.getBBox) {\n      ret = selected.getBBox();\n    }\n    break;\n  case 'g':\n  case 'a':\n    ret = groupBBFix(selected);\n    break;\n  default:\n\n    if (elname === 'use') {\n      ret = groupBBFix(selected); // , true);\n    }\n    if (elname === 'use' || (elname === 'foreignObject' && isWebkit())) {\n      if (!ret) { ret = selected.getBBox(); }\n      // This is resolved in later versions of webkit, perhaps we should\n      // have a featured detection for correct 'use' behavior?\n      // ——————————\n      if (!isWebkit()) {\n        const bb = {};\n        bb.width = ret.width;\n        bb.height = ret.height;\n        bb.x = ret.x + parseFloat(selected.getAttribute('x') || 0);\n        bb.y = ret.y + parseFloat(selected.getAttribute('y') || 0);\n        ret = bb;\n      }\n    } else if (visElemsArr.includes(elname)) {\n      if (selected) {\n        try {\n          ret = selected.getBBox();\n        } catch (err) {\n          // tspan (and textPath apparently) have no `getBBox` in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=937268\n          // Re: Chrome returning bbox for containing text element, see: https://bugs.chromium.org/p/chromium/issues/detail?id=349835\n          const extent = selected.getExtentOfChar(0); // pos+dimensions of the first glyph\n          const width = selected.getComputedTextLength(); // width of the tspan\n          ret = {\n            x: extent.x,\n            y: extent.y,\n            width,\n            height: extent.height\n          };\n        }\n      } else {\n        // Check if element is child of a foreignObject\n        const fo = $(selected).closest('foreignObject');\n        if (fo.length) {\n          if (fo[0].getBBox) {\n            ret = fo[0].getBBox();\n          }\n        }\n      }\n    }\n  }\n  if (ret) {\n    ret = bboxToObj(ret);\n  }\n\n  // get the bounding box from the DOM (which is in that element's coordinate system)\n  return ret;\n};\n\n/**\n* @typedef {GenericArray} module:utilities.PathSegmentArray\n* @property {Integer} length 2\n* @property {\"M\"|\"L\"|\"C\"|\"Z\"} 0\n* @property {Float[]} 1\n*/\n\n/**\n* Create a path 'd' attribute from path segments.\n* Each segment is an array of the form: `[singleChar, [x,y, x,y, ...]]`\n* @function module:utilities.getPathDFromSegments\n* @param {module:utilities.PathSegmentArray[]} pathSegments - An array of path segments to be converted\n* @returns {string} The converted path d attribute.\n*/\nexport const getPathDFromSegments = function (pathSegments) {\n  let d = '';\n\n  $.each(pathSegments, function (j, [singleChar, pts]) {\n    d += singleChar;\n    for (let i = 0; i < pts.length; i += 2) {\n      d += (pts[i] + ',' + pts[i + 1]) + ' ';\n    }\n  });\n\n  return d;\n};\n\n/**\n* Make a path 'd' attribute from a simple SVG element shape.\n* @function module:utilities.getPathDFromElement\n* @param {Element} elem - The element to be converted\n* @returns {string} The path d attribute or `undefined` if the element type is unknown.\n*/\nexport const getPathDFromElement = function (elem) {\n  // Possibly the cubed root of 6, but 1.81 works best\n  let num = 1.81;\n  let d, a, rx, ry;\n  switch (elem.tagName) {\n  case 'ellipse':\n  case 'circle': {\n    a = $(elem).attr(['rx', 'ry', 'cx', 'cy']);\n    const {cx, cy} = a;\n    ({rx, ry} = a);\n    if (elem.tagName === 'circle') {\n      ry = $(elem).attr('r');\n      rx = ry;\n    }\n\n    d = getPathDFromSegments([\n      ['M', [(cx - rx), (cy)]],\n      ['C', [(cx - rx), (cy - ry / num), (cx - rx / num), (cy - ry), (cx), (cy - ry)]],\n      ['C', [(cx + rx / num), (cy - ry), (cx + rx), (cy - ry / num), (cx + rx), (cy)]],\n      ['C', [(cx + rx), (cy + ry / num), (cx + rx / num), (cy + ry), (cx), (cy + ry)]],\n      ['C', [(cx - rx / num), (cy + ry), (cx - rx), (cy + ry / num), (cx - rx), (cy)]],\n      ['Z', []]\n    ]);\n    break;\n  } case 'path':\n    d = elem.getAttribute('d');\n    break;\n  case 'line':\n    a = $(elem).attr(['x1', 'y1', 'x2', 'y2']);\n    d = 'M' + a.x1 + ',' + a.y1 + 'L' + a.x2 + ',' + a.y2;\n    break;\n  case 'polyline':\n    d = 'M' + elem.getAttribute('points');\n    break;\n  case 'polygon':\n    d = 'M' + elem.getAttribute('points') + ' Z';\n    break;\n  case 'rect': {\n    const r = $(elem).attr(['rx', 'ry']);\n    ({rx, ry} = r);\n    const b = elem.getBBox();\n    const {x, y} = b,\n      w = b.width,\n      h = b.height;\n    num = 4 - num; // Why? Because!\n\n    if (!rx && !ry) {\n      // Regular rect\n      d = getPathDFromSegments([\n        ['M', [x, y]],\n        ['L', [x + w, y]],\n        ['L', [x + w, y + h]],\n        ['L', [x, y + h]],\n        ['L', [x, y]],\n        ['Z', []]\n      ]);\n    } else {\n      d = getPathDFromSegments([\n        ['M', [x, y + ry]],\n        ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]],\n        ['L', [x + w - rx, y]],\n        ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]],\n        ['L', [x + w, y + h - ry]],\n        ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]],\n        ['L', [x + rx, y + h]],\n        ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]],\n        ['L', [x, y + ry]],\n        ['Z', []]\n      ]);\n    }\n    break;\n  } default:\n    break;\n  }\n\n  return d;\n};\n\n/**\n* Get a set of attributes from an element that is useful for convertToPath.\n* @function module:utilities.getExtraAttributesForConvertToPath\n* @param {Element} elem - The element to be probed\n* @returns {PlainObject.<\"marker-start\"|\"marker-end\"|\"marker-mid\"|\"filter\"|\"clip-path\", string>} An object with attributes.\n*/\nexport const getExtraAttributesForConvertToPath = function (elem) {\n  const attrs = {};\n  // TODO: make this list global so that we can properly maintain it\n  // TODO: what about @transform, @clip-rule, @fill-rule, etc?\n  $.each(['marker-start', 'marker-end', 'marker-mid', 'filter', 'clip-path'], function () {\n    const a = elem.getAttribute(this);\n    if (a) {\n      attrs[this] = a;\n    }\n  });\n  return attrs;\n};\n\n/**\n* Get the BBox of an element-as-path.\n* @function module:utilities.getBBoxOfElementAsPath\n* @param {Element} elem - The DOM element to be probed\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, `pathActions.resetOrientation()` is used. See: canvas.pathActions.\n* @returns {DOMRect|false} The resulting path's bounding box object.\n*/\nexport const getBBoxOfElementAsPath = function (elem, addSVGElementFromJson, pathActions) {\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: getExtraAttributesForConvertToPath(elem)\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const {parentNode} = elem;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parentNode.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n  } else {\n    path.remove();\n  }\n\n  // Get the correct BBox of the new path, then discard it\n  pathActions.resetOrientation(path);\n  let bb = false;\n  try {\n    bb = path.getBBox();\n  } catch (e) {\n    // Firefox fails\n  }\n  path.remove();\n  return bb;\n};\n\n/**\n* Convert selected element to a path.\n* @function module:utilities.convertToPath\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.SVGElementJSON} attrs - Apply attributes to new path. see canvas.convertToPath\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}\n* @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}\n* @param {module:history} hstry - see history module\n* @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}\n* @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.\n*/\nexport const convertToPath = function (elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, hstry, addCommandToHistory) {\n  const batchCmd = new hstry.BatchCommand('Convert element to Path');\n\n  // Any attribute on the element not covered by the passed-in attributes\n  attrs = $.extend({}, attrs, getExtraAttributesForConvertToPath(elem));\n\n  const path = addSVGElementFromJson({\n    element: 'path',\n    attr: attrs\n  });\n\n  const eltrans = elem.getAttribute('transform');\n  if (eltrans) {\n    path.setAttribute('transform', eltrans);\n  }\n\n  const {id} = elem;\n  const {parentNode} = elem;\n  if (elem.nextSibling) {\n    elem.before(path);\n  } else {\n    parentNode.append(path);\n  }\n\n  const d = getPathDFromElement(elem);\n  if (d) {\n    path.setAttribute('d', d);\n\n    // Replace the current element with the converted one\n\n    // Reorient if it has a matrix\n    if (eltrans) {\n      const tlist = getTransformList(path);\n      if (hasMatrixTransform(tlist)) {\n        pathActions.resetOrientation(path);\n      }\n    }\n\n    const {nextSibling} = elem;\n    batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));\n    batchCmd.addSubCommand(new hstry.InsertElementCommand(path));\n\n    clearSelection();\n    elem.remove();\n    path.setAttribute('id', id);\n    path.removeAttribute('visibility');\n    addToSelection([path], true);\n\n    addCommandToHistory(batchCmd);\n\n    return path;\n  }\n  // the elem.tagName was not recognized, so no \"d\" attribute. Remove it, so we've haven't changed anything.\n  path.remove();\n  return null;\n};\n\n/**\n* Can the bbox be optimized over the native getBBox? The optimized bbox is the same as the native getBBox when\n* the rotation angle is a multiple of 90 degrees and there are no complex transforms.\n* Getting an optimized bbox can be dramatically slower, so we want to make sure it's worth it.\n*\n* The best example for this is a circle rotate 45 degrees. The circle doesn't get wider or taller when rotated\n* about it's center.\n*\n* The standard, unoptimized technique gets the native bbox of the circle, rotates the box 45 degrees, uses\n* that width and height, and applies any transforms to get the final bbox. This means the calculated bbox\n* is much wider than the original circle. If the angle had been 0, 90, 180, etc. both techniques render the\n* same bbox.\n*\n* The optimization is not needed if the rotation is a multiple 90 degrees. The default technique is to call\n* getBBox then apply the angle and any transforms.\n*\n* @param {Float} angle - The rotation angle in degrees\n* @param {boolean} hasAMatrixTransform - True if there is a matrix transform\n* @returns {boolean} True if the bbox can be optimized.\n*/\nfunction bBoxCanBeOptimizedOverNativeGetBBox (angle, hasAMatrixTransform) {\n  const angleModulo90 = angle % 90;\n  const closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;\n  const closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;\n  return hasAMatrixTransform || !(closeTo0 || closeTo90);\n}\n\n/**\n* Get bounding box that includes any transforms.\n* @function module:utilities.getBBoxWithTransform\n* @param {Element} elem - The DOM element to be converted\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getBBoxWithTransform = function (elem, addSVGElementFromJson, pathActions) {\n  // TODO: Fix issue with rotated groups. Currently they work\n  // fine in FF, but not in other browsers (same problem mentioned\n  // in Issue 339 comment #2).\n\n  let bb = getBBox(elem);\n\n  if (!bb) {\n    return null;\n  }\n\n  const tlist = getTransformList(elem);\n  const angle = getRotationAngleFromTransformList(tlist);\n  const hasMatrixXForm = hasMatrixTransform(tlist);\n\n  if (angle || hasMatrixXForm) {\n    let goodBb = false;\n    if (bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixXForm)) {\n      // Get the BBox from the raw path for these elements\n      // TODO: why ellipse and not circle\n      const elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];\n      if (elemNames.includes(elem.tagName)) {\n        goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n        bb = goodBb;\n      } else if (elem.tagName === 'rect') {\n        // Look for radius\n        const rx = elem.getAttribute('rx');\n        const ry = elem.getAttribute('ry');\n        if (rx || ry) {\n          goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n          bb = goodBb;\n        }\n      }\n    }\n\n    if (!goodBb) {\n      const {matrix} = transformListToTransform(tlist);\n      bb = transformBox(bb.x, bb.y, bb.width, bb.height, matrix).aabox;\n\n      // Old technique that was exceedingly slow with large documents.\n      //\n      // Accurate way to get BBox of rotated element in Firefox:\n      // Put element in group and get its BBox\n      //\n      // Must use clone else FF freaks out\n      // const clone = elem.cloneNode(true);\n      // const g = document.createElementNS(NS.SVG, 'g');\n      // const parent = elem.parentNode;\n      // parent.append(g);\n      // g.append(clone);\n      // const bb2 = bboxToObj(g.getBBox());\n      // g.remove();\n    }\n  }\n  return bb;\n};\n\n/**\n * @param {Element} elem\n * @returns {Float}\n * @todo This is problematic with large stroke-width and, for example, a single\n * horizontal line. The calculated BBox extends way beyond left and right sides.\n */\nfunction getStrokeOffsetForBBox (elem) {\n  const sw = elem.getAttribute('stroke-width');\n  return (!isNaN(sw) && elem.getAttribute('stroke') !== 'none') ? sw / 2 : 0;\n}\n\n/**\n * @typedef {PlainObject} BBox\n * @property {Integer} x The x value\n * @property {Integer} y The y value\n * @property {Float} width\n * @property {Float} height\n */\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBox\n* @param {Element[]} elems - Array with DOM elements to check\n* @param {module:utilities.EditorContext#addSVGElementFromJson} addSVGElementFromJson - Function to add the path element to the current layer. See canvas.addSVGElementFromJson\n* @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.\n* @returns {module:utilities.BBoxObject|module:math.TransformedBox|DOMRect} A single bounding box object\n*/\nexport const getStrokedBBox = function (elems, addSVGElementFromJson, pathActions) {\n  if (!elems || !elems.length) { return false; }\n\n  let fullBb;\n  $.each(elems, function () {\n    if (fullBb) { return; }\n    if (!this.parentNode) { return; }\n    fullBb = getBBoxWithTransform(this, addSVGElementFromJson, pathActions);\n  });\n\n  // This shouldn't ever happen...\n  if (fullBb === undefined) { return null; }\n\n  // fullBb doesn't include the stoke, so this does no good!\n  // if (elems.length == 1) return fullBb;\n\n  let maxX = fullBb.x + fullBb.width;\n  let maxY = fullBb.y + fullBb.height;\n  let minX = fullBb.x;\n  let minY = fullBb.y;\n\n  // If only one elem, don't call the potentially slow getBBoxWithTransform method again.\n  if (elems.length === 1) {\n    const offset = getStrokeOffsetForBBox(elems[0]);\n    minX -= offset;\n    minY -= offset;\n    maxX += offset;\n    maxY += offset;\n  } else {\n    $.each(elems, function (i, elem) {\n      const curBb = getBBoxWithTransform(elem, addSVGElementFromJson, pathActions);\n      if (curBb) {\n        const offset = getStrokeOffsetForBBox(elem);\n        minX = Math.min(minX, curBb.x - offset);\n        minY = Math.min(minY, curBb.y - offset);\n        // TODO: The old code had this test for max, but not min. I suspect this test should be for both min and max\n        if (elem.nodeType === 1) {\n          maxX = Math.max(maxX, curBb.x + curBb.width + offset);\n          maxY = Math.max(maxY, curBb.y + curBb.height + offset);\n        }\n      }\n    });\n  }\n\n  fullBb.x = minX;\n  fullBb.y = minY;\n  fullBb.width = maxX - minX;\n  fullBb.height = maxY - minY;\n  return fullBb;\n};\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:utilities.getVisibleElements\n* @param {Element} parentElement - The parent DOM element to search within\n* @returns {Element[]} All \"visible\" elements.\n*/\nexport const getVisibleElements = function (parentElement) {\n  if (!parentElement) {\n    parentElement = $(editorContext_.getSVGContent()).children(); // Prevent layers from being included\n  }\n\n  const contentElems = [];\n  $(parentElement).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push(elem);\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Get the bounding box for one or more stroked and/or transformed elements.\n* @function module:utilities.getStrokedBBoxDefaultVisible\n* @param {Element[]} elems - Array with DOM elements to check\n* @returns {module:utilities.BBoxObject} A single bounding box object\n*/\nexport const getStrokedBBoxDefaultVisible = function (elems) {\n  if (!elems) { elems = getVisibleElements(); }\n  return getStrokedBBox(\n    elems,\n    editorContext_.addSVGElementFromJson,\n    editorContext_.pathActions\n  );\n};\n\n/**\n* Get the rotation angle of the given transform list.\n* @function module:utilities.getRotationAngleFromTransformList\n* @param {SVGTransformList} tlist - List of transforms\n* @param {boolean} toRad - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport const getRotationAngleFromTransformList = function (tlist, toRad) {\n  if (!tlist) { return 0; } // <svg> elements have no tlist\n  const N = tlist.numberOfItems;\n  for (let i = 0; i < N; ++i) {\n    const xform = tlist.getItem(i);\n    if (xform.type === 4) {\n      return toRad ? xform.angle * Math.PI / 180.0 : xform.angle;\n    }\n  }\n  return 0.0;\n};\n\n/**\n* Get the rotation angle of the given/selected DOM element.\n* @function module:utilities.getRotationAngle\n* @param {Element} [elem] - DOM element to get the angle for. Default to first of selected elements.\n* @param {boolean} [toRad=false] - When true returns the value in radians rather than degrees\n* @returns {Float} The angle in degrees or radians\n*/\nexport let getRotationAngle = function (elem, toRad) { // eslint-disable-line import/no-mutable-exports\n  const selected = elem || editorContext_.getSelectedElements()[0];\n  // find the rotation transform (if any) and set it\n  const tlist = getTransformList(selected);\n  return getRotationAngleFromTransformList(tlist, toRad);\n};\n\n/**\n* Get the reference element associated with the given attribute value.\n* @function module:utilities.getRefElem\n* @param {string} attrVal - The attribute value as a string\n* @returns {Element} Reference element\n*/\nexport const getRefElem = function (attrVal) {\n  return getElem(getUrlFromAttr(attrVal).substr(1));\n};\n\n/**\n* Get a DOM element by ID within the SVG root element.\n* @function module:utilities.getElem\n* @param {string} id - String with the element's new ID\n* @returns {?Element}\n*/\nexport const getElem = (supportsSelectors())\n  ? function (id) {\n    // querySelector lookup\n    return svgroot_.querySelector('#' + id);\n  }\n  : supportsXpath()\n    ? function (id) {\n      // xpath lookup\n      return domdoc_.evaluate(\n        'svg:svg[@id=\"svgroot\"]//svg:*[@id=\"' + id + '\"]',\n        domcontainer_,\n        function () { return NS.SVG; },\n        9,\n        null\n      ).singleNodeValue;\n    }\n    : function (id) {\n      // jQuery lookup: twice as slow as xpath in FF\n      return $(svgroot_).find('[id=' + id + ']')[0];\n    };\n\n/**\n* Assigns multiple attributes to an element.\n* @function module:utilities.assignAttributes\n* @param {Element} elem - DOM element to apply new attribute values to\n* @param {PlainObject.<string, string>} attrs - Object with attribute keys/values\n* @param {Integer} [suspendLength] - Milliseconds to suspend redraw\n* @param {boolean} [unitCheck=false] - Boolean to indicate the need to use units.setUnitAttr\n* @returns {undefined}\n*/\nexport const assignAttributes = function (elem, attrs, suspendLength, unitCheck) {\n  for (const [key, value] of Object.entries(attrs)) {\n    const ns = (key.substr(0, 4) === 'xml:'\n      ? NS.XML\n      : key.substr(0, 6) === 'xlink:' ? NS.XLINK : null);\n\n    if (ns) {\n      elem.setAttributeNS(ns, key, value);\n    } else if (!unitCheck) {\n      elem.setAttribute(key, value);\n    } else {\n      setUnitAttr(elem, key, value);\n    }\n  }\n};\n\n/**\n* Remove unneeded (default) attributes, making resulting SVG smaller.\n* @function module:utilities.cleanupElement\n* @param {Element} element - DOM element to clean up\n* @returns {undefined}\n*/\nexport const cleanupElement = function (element) {\n  const defaults = {\n    'fill-opacity': 1,\n    'stop-opacity': 1,\n    opacity: 1,\n    stroke: 'none',\n    'stroke-dasharray': 'none',\n    'stroke-linejoin': 'miter',\n    'stroke-linecap': 'butt',\n    'stroke-opacity': 1,\n    'stroke-width': 1,\n    rx: 0,\n    ry: 0\n  };\n\n  if (element.nodeName === 'ellipse') {\n    // Ellipse elements require rx and ry attributes\n    delete defaults.rx;\n    delete defaults.ry;\n  }\n\n  Object.entries(defaults).forEach(([attr, val]) => {\n    if (element.getAttribute(attr) === String(val)) {\n      element.removeAttribute(attr);\n    }\n  });\n};\n\n/**\n* Round value to for snapping.\n* @function module:utilities.snapToGrid\n* @param {Float} value\n* @returns {Integer}\n*/\nexport const snapToGrid = function (value) {\n  const unit = editorContext_.getBaseUnit();\n  let stepSize = editorContext_.getSnappingStep();\n  if (unit !== 'px') {\n    stepSize *= getTypeMap()[unit];\n  }\n  value = Math.round(value / stepSize) * stepSize;\n  return value;\n};\n\n/**\n* Escapes special characters in a regular expression.\n* @function module:utilities.regexEscape\n* @param {string} str\n* @returns {string}\n*/\nexport const regexEscape = function (str) {\n  // From: http://phpjs.org/functions\n  return String(str).replace(new RegExp('[.\\\\\\\\+*?\\\\[\\\\^\\\\]$(){}=!<>|:\\\\-]', 'g'), '\\\\$&');\n};\n\n/**\n * Prevents default browser click behaviour on the given element.\n * @function module:utilities.preventClickDefault\n * @param {Element} img - The DOM element to prevent the click on\n * @returns {undefined}\n */\nexport const preventClickDefault = function (img) {\n  $(img).click(function (e) { e.preventDefault(); });\n};\n\n/**\n * @callback module:utilities.GetNextID\n * @returns {string} The ID\n */\n/**\n * Create a clone of an element, updating its ID and its children's IDs when needed.\n * @function module:utilities.copyElem\n * @param {Element} el - DOM element to clone\n * @param {module:utilities.GetNextID} getNextId - The getter of the next unique ID.\n * @returns {Element} The cloned element\n */\nexport const copyElem = function (el, getNextId) {\n  // manually create a copy of the element\n  const newEl = document.createElementNS(el.namespaceURI, el.nodeName);\n  $.each(el.attributes, function (i, attr) {\n    if (attr.localName !== '-moz-math-font-style') {\n      newEl.setAttributeNS(attr.namespaceURI, attr.nodeName, attr.value);\n    }\n  });\n  // set the copied element's new id\n  newEl.removeAttribute('id');\n  newEl.id = getNextId();\n\n  // Opera's \"d\" value needs to be reset for Opera/Win/non-EN\n  // Also needed for webkit (else does not keep curved segments on clone)\n  if (isWebkit() && el.nodeName === 'path') {\n    const fixedD = convertPath(el);\n    newEl.setAttribute('d', fixedD);\n  }\n\n  // now create copies of all children\n  $.each(el.childNodes, function (i, child) {\n    switch (child.nodeType) {\n    case 1: // element node\n      newEl.append(copyElem(child, getNextId));\n      break;\n    case 3: // text node\n      newEl.textContent = child.nodeValue;\n      break;\n    default:\n      break;\n    }\n  });\n\n  if ($(el).data('gsvg')) {\n    $(newEl).data('gsvg', newEl.firstChild);\n  } else if ($(el).data('symbol')) {\n    const ref = $(el).data('symbol');\n    $(newEl).data('ref', ref).data('symbol', ref);\n  } else if (newEl.tagName === 'image') {\n    preventClickDefault(newEl);\n  }\n\n  return newEl;\n};\n\n/**\n * Whether a value is `null` or `undefined`.\n * @param {Any} val\n * @returns {boolean}\n */\nexport const isNullish = (val) => {\n  return val === null || val === undefined;\n};\n\n/**\n* Overwrite methods for unit testing.\n* @function module:utilities.mock\n* @param {PlainObject} mockMethods\n* @returns {undefined}\n*/\nexport const mock = ({\n  getHref: getHrefUser, setHref: setHrefUser, getRotationAngle: getRotationAngleUser\n}) => {\n  getHref = getHrefUser;\n  setHref = setHrefUser;\n  getRotationAngle = getRotationAngleUser;\n};\n","/* globals jQuery */\n/**\n * Adds context menu functionality\n * @module contextmenu\n * @license Apache-2.0\n * @author Adam Bender\n */\n// Dependencies:\n// 1) jQuery (for dom injection of context menus)\n\nconst $ = jQuery;\n\nlet contextMenuExtensions = {};\n\n/**\n * Signature depends on what the user adds; in the case of our uses with\n * SVGEditor, no parameters are passed nor anything expected for a return.\n * @callback module:contextmenu.MenuItemAction\n*/\n\n/**\n* @typedef {PlainObject} module:contextmenu.MenuItem\n* @property {string} id\n* @property {string} label\n* @property {module:contextmenu.MenuItemAction} action\n*/\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {boolean}\n*/\nconst menuItemIsValid = function (menuItem) {\n  return menuItem && menuItem.id && menuItem.label && menuItem.action && typeof menuItem.action === 'function';\n};\n\n/**\n* @function module:contextmenu.add\n* @param {module:contextmenu.MenuItem} menuItem\n* @throws {Error|TypeError}\n* @returns {undefined}\n*/\nexport const add = function (menuItem) {\n  // menuItem: {id, label, shortcut, action}\n  if (!menuItemIsValid(menuItem)) {\n    throw new TypeError('Menu items must be defined and have at least properties: id, label, action, where action must be a function');\n  }\n  if (menuItem.id in contextMenuExtensions) {\n    throw new Error('Cannot add extension \"' + menuItem.id + '\", an extension by that name already exists\"');\n  }\n  // Register menuItem action, see below for deferred menu dom injection\n  console.log('Registered contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}'); // eslint-disable-line no-console\n  contextMenuExtensions[menuItem.id] = menuItem;\n  // TODO: Need to consider how to handle custom enable/disable behavior\n};\n\n/**\n* @function module:contextmenu.hasCustomHandler\n* @param {string} handlerKey\n* @returns {boolean}\n*/\nexport const hasCustomHandler = function (handlerKey) {\n  return Boolean(contextMenuExtensions[handlerKey]);\n};\n\n/**\n* @function module:contextmenu.getCustomHandler\n* @param {string} handlerKey\n* @returns {module:contextmenu.MenuItemAction}\n*/\nexport const getCustomHandler = function (handlerKey) {\n  return contextMenuExtensions[handlerKey].action;\n};\n\n/**\n* @param {module:contextmenu.MenuItem} menuItem\n* @returns {undefined}\n*/\nconst injectExtendedContextMenuItemIntoDom = function (menuItem) {\n  if (!Object.keys(contextMenuExtensions).length) {\n    // all menuItems appear at the bottom of the menu in their own container.\n    // if this is the first extension menu we need to add the separator.\n    $('#cmenu_canvas').append(\"<li class='separator'>\");\n  }\n  const shortcut = menuItem.shortcut || '';\n  $('#cmenu_canvas').append(\"<li class='disabled'><a href='#\" + menuItem.id + \"'>\" +\n    menuItem.label + \"<span class='shortcut'>\" +\n    shortcut + '</span></a></li>');\n};\n\n/**\n* @function module:contextmenu.injectExtendedContextMenuItemsIntoDom\n* @returns {undefined}\n*/\nexport const injectExtendedContextMenuItemsIntoDom = function () {\n  Object.values(contextMenuExtensions).forEach((menuItem) => {\n    injectExtendedContextMenuItemIntoDom(menuItem);\n  });\n};\n/**\n* @function module:contextmenu.resetCustomMenus\n* @returns {undefined}\n*/\nexport const resetCustomMenus = function () { contextMenuExtensions = {}; };\n","// MIT License\n// From: https://github.com/uupaa/dynamic-import-polyfill/blob/master/importModule.js\n\n/**\n * @module importModule\n */\n\n/**\n * Converts a possible relative URL into an absolute one.\n * @param {string} url\n * @returns {string}\n */\nfunction toAbsoluteURL (url) {\n  const a = document.createElement('a');\n  a.setAttribute('href', url); // <a href=\"hoge.html\">\n  return a.cloneNode(false).href; // -> \"http://example.com/hoge.html\"\n}\n\n/**\n * Add any of the whitelisted attributes to the script tag.\n * @param {HTMLScriptElement} script\n * @param {PlainObject.<string, string>} atts\n * @returns {undefined}\n */\nfunction addScriptAtts (script, atts) {\n  ['id', 'class', 'type'].forEach((prop) => {\n    if (prop in atts) {\n      script[prop] = atts[prop];\n    }\n  });\n}\n\n// Additions by Brett\n/**\n* @typedef {PlainObject} module:importModule.ImportConfig\n* @property {string} global The variable name to set on `window` (when not using the modular version)\n* @property {boolean} [returnDefault=false]\n*/\n/**\n* @function module:importModule.importSetGlobalDefault\n* @param {string|string[]} url\n* @param {module:importModule.ImportConfig} config\n* @returns {Promise} The value to which it resolves depends on the export of the targeted module.\n*/\nexport function importSetGlobalDefault (url, config) {\n  return importSetGlobal(url, {...config, returnDefault: true});\n}\n/**\n* @function module:importModule.importSetGlobal\n* @param {string|string[]} url\n* @param {module:importModule.ImportConfig} config\n* @returns {Promise} The promise resolves to either an `ArbitraryModule` or\n*   any other value depends on the export of the targeted module.\n*/\nexport async function importSetGlobal (url, {global: glob, returnDefault}) {\n  // Todo: Replace calls to this function with `import()` when supported\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (modularVersion) {\n    return importModule(url, undefined, {returnDefault});\n  }\n  await importScript(url);\n  return window[glob];\n}\n/**\n *\n * @author Brett Zamir (other items are from `dynamic-import-polyfill`)\n * @param {string|string[]} url\n * @param {PlainObject} [atts={}]\n * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a\n *   script loading error\n */\nexport function importScript (url, atts = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importScript(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const script = document.createElement('script');\n    const destructor = () => {\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      script.src = '';\n    };\n    script.defer = 'defer';\n    addScriptAtts(script, atts);\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve();\n      destructor();\n    };\n    script.src = url;\n\n    document.head.append(script);\n  });\n}\n\n/**\n *\n * @param {string|string[]} url\n * @param {PlainObject} [atts={}]\n * @param {PlainObject} opts\n * @param {boolean} [opts.returnDefault=false} = {}]\n * @returns {Promise} Resolves to value of loading module or rejects with\n *   `Error` upon a script loading error.\n */\nexport function importModule (url, atts = {}, {returnDefault = false} = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importModule(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const vector = '$importModule$' + Math.random().toString(32).slice(2);\n    const script = document.createElement('script');\n    const destructor = () => {\n      delete window[vector];\n      script.onerror = null;\n      script.onload = null;\n      script.remove();\n      URL.revokeObjectURL(script.src);\n      script.src = '';\n    };\n    addScriptAtts(script, atts);\n    script.defer = 'defer';\n    script.type = 'module';\n    script.onerror = () => {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    };\n    script.onload = () => {\n      resolve(window[vector]);\n      destructor();\n    };\n    const absURL = toAbsoluteURL(url);\n    const loader = `import * as m from '${absURL.replace(/'/g, \"\\\\'\")}'; window.${vector} = ${returnDefault ? 'm.default || ' : ''}m;`; // export Module\n    const blob = new Blob([loader], {type: 'text/javascript'});\n    script.src = URL.createObjectURL(blob);\n\n    document.head.append(script);\n  });\n}\n\nexport default importModule;\n","/**\n * @module jQueryPluginDBox\n */\n/**\n* @param {external:jQuery} $\n* @param {PlainObject} [strings]\n* @param {PlainObject} [strings.ok]\n* @param {PlainObject} [strings.cancel]\n* @returns {external:jQuery}\n*/\nexport default function jQueryPluginDBox ($, strings = {ok: 'Ok', cancel: 'Cancel'}) {\n  // This sets up alternative dialog boxes. They mostly work the same way as\n  // their UI counterparts, expect instead of returning the result, a callback\n  // needs to be included that returns the result as its first parameter.\n  // In the future we may want to add additional types of dialog boxes, since\n  // they should be easy to handle this way.\n  $('#dialog_container').draggable({\n    cancel: '#dialog_content, #dialog_buttons *',\n    containment: 'window'\n  }).css('position', 'absolute');\n\n  const box = $('#dialog_box'),\n    btnHolder = $('#dialog_buttons'),\n    dialogContent = $('#dialog_content');\n\n  /**\n  * Resolves to `false` (if cancelled), for prompts and selects\n  * without checkboxes, it resolves to the value of the form control. For other\n  * types without checkboxes, it resolves to `true`. For checkboxes, it resolves\n  * to an object with the `response` key containing the same value as the previous\n  * mentioned (string or `true`) and a `checked` (boolean) property.\n  * @typedef {Promise} module:jQueryPluginDBox.PromiseResult\n  */\n  /**\n  * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption\n  * @property {string} text\n  * @property {string} value\n  */\n  /**\n  * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo\n  * @property {string} label Label for the checkbox\n  * @property {string} value Value of the checkbox\n  * @property {string} tooltip Tooltip on the checkbox label\n  * @property {boolean} checked Whether the checkbox is checked by default\n  */\n  /**\n   * Triggered upon a change of value for the select pull-down.\n   * @callback module:jQueryPluginDBox.SelectChangeListener\n   * @returns {undefined}\n   */\n  /**\n  * @param {\"alert\"|\"prompt\"|\"select\"|\"process\"} type\n  * @param {string} msg\n  * @param {string} [defaultVal]\n  * @param {module:jQueryPluginDBox.SelectOption[]} [opts]\n  * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]\n  * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  function dbox (type, msg, defaultVal, opts, changeListener, checkbox) {\n    dialogContent.html('<p>' + msg.replace(/\\n/g, '</p><p>') + '</p>')\n      .toggleClass('prompt', (type === 'prompt'));\n    btnHolder.empty();\n\n    const ok = $('<input type=\"button\" value=\"' + strings.ok + '\">').appendTo(btnHolder);\n\n    return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n      if (type !== 'alert') {\n        $('<input type=\"button\" value=\"' + strings.cancel + '\">')\n          .appendTo(btnHolder)\n          .click(function () {\n            box.hide();\n            resolve(false);\n          });\n      }\n\n      let ctrl, chkbx;\n      if (type === 'prompt') {\n        ctrl = $('<input type=\"text\">').prependTo(btnHolder);\n        ctrl.val(defaultVal || '');\n        ctrl.bind('keydown', 'return', function () { ok.click(); });\n      } else if (type === 'select') {\n        const div = $('<div style=\"text-align:center;\">');\n        ctrl = $('<select>').appendTo(div);\n        if (checkbox) {\n          const label = $('<label>').text(checkbox.label);\n          chkbx = $('<input type=\"checkbox\">').appendTo(label);\n          chkbx.val(checkbox.value);\n          if (checkbox.tooltip) {\n            label.attr('title', checkbox.tooltip);\n          }\n          chkbx.prop('checked', Boolean(checkbox.checked));\n          div.append($('<div>').append(label));\n        }\n        $.each(opts || [], function (opt, val) {\n          if (typeof val === 'object') {\n            ctrl.append($('<option>').val(val.value).html(val.text));\n          } else {\n            ctrl.append($('<option>').html(val));\n          }\n        });\n        dialogContent.append(div);\n        if (defaultVal) {\n          ctrl.val(defaultVal);\n        }\n        if (changeListener) {\n          ctrl.bind('change', 'return', changeListener);\n        }\n        ctrl.bind('keydown', 'return', function () { ok.click(); });\n      } else if (type === 'process') {\n        ok.hide();\n      }\n\n      box.show();\n\n      ok.click(function () {\n        box.hide();\n        const response = (type === 'prompt' || type === 'select') ? ctrl.val() : true;\n        if (chkbx) {\n          resolve({response, checked: chkbx.prop('checked')});\n          return;\n        }\n        resolve(response);\n      }).focus();\n\n      if (type === 'prompt' || type === 'select') {\n        ctrl.focus();\n      }\n    });\n  }\n\n  /**\n  * @param {string} msg Message to alert\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.alert = function (msg) {\n    return dbox('alert', msg);\n  };\n  /**\n  * @param {string} msg Message for which to ask confirmation\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.confirm = function (msg) {\n    return dbox('confirm', msg);\n  };\n  /**\n  * @param {string} msg Message to indicate upon cancelable indicator\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.process_cancel = function (msg) {\n    return dbox('process', msg);\n  };\n  /**\n  * @param {string} msg Message to accompany the prompt\n  * @param {string} [defaultText=''] The default text to show for the prompt\n  * @returns {jQueryPluginDBox.PromiseResult}\n  */\n  $.prompt = function (msg, defaultText = '') {\n    return dbox('prompt', msg, defaultText);\n  };\n  $.select = function (msg, opts, changeListener, txt, checkbox) {\n    return dbox('select', msg, txt, opts, changeListener, checkbox);\n  };\n  return $;\n}\n","/* globals jQuery */\n/**\n * Provides tools for the layer concept\n * @module layer\n * @license MIT\n *\n * @copyright 2011 Jeff Schiller, 2016 Flint O'Brien\n */\n\nimport {NS} from './namespaces.js';\nimport {toXml, walkTree, isNullish} from './utilities.js';\n\nconst $ = jQuery;\n\n/**\n * This class encapsulates the concept of a layer in the drawing. It can be constructed with\n * an existing group element or, with three parameters, will create a new layer group element.\n *\n * @example\n * new Layer('name', group);          // Use the existing group for this layer.\n * new Layer('name', group, svgElem); // Create a new group and add it to the DOM after group.\n * new Layer('name', null, svgElem);  // Create a new group and add it to the DOM as the last layer.\n * @memberof module:layer\n */\nclass Layer {\n  /**\n  * @param {string} name - Layer name\n  * @param {SVGGElement|null} group - An existing SVG group element or null.\n  *     If group and no svgElem, use group for this layer.\n  *     If group and svgElem, create a new group element and insert it in the DOM after group.\n  *     If no group and svgElem, create a new group element and insert it in the DOM as the last layer.\n  * @param {SVGGElement=} svgElem - The SVG DOM element. If defined, use this to add\n  *     a new layer to the document.\n  */\n  constructor (name, group, svgElem) {\n    this.name_ = name;\n    this.group_ = svgElem ? null : group;\n\n    if (svgElem) {\n      // Create a group element with title and add it to the DOM.\n      const svgdoc = svgElem.ownerDocument;\n      this.group_ = svgdoc.createElementNS(NS.SVG, 'g');\n      const layerTitle = svgdoc.createElementNS(NS.SVG, 'title');\n      layerTitle.textContent = name;\n      this.group_.append(layerTitle);\n      if (group) {\n        $(group).after(this.group_);\n      } else {\n        svgElem.append(this.group_);\n      }\n    }\n\n    addLayerClass(this.group_);\n    walkTree(this.group_, function (e) {\n      e.setAttribute('style', 'pointer-events:inherit');\n    });\n\n    this.group_.setAttribute('style', svgElem ? 'pointer-events:all' : 'pointer-events:none');\n  }\n\n  /**\n   * Get the layer's name.\n   * @returns {string} The layer name\n   */\n  getName () {\n    return this.name_;\n  }\n\n  /**\n   * Get the group element for this layer.\n   * @returns {SVGGElement} The layer SVG group\n   */\n  getGroup () {\n    return this.group_;\n  }\n\n  /**\n   * Active this layer so it takes pointer events.\n   * @returns {undefined}\n   */\n  activate () {\n    this.group_.setAttribute('style', 'pointer-events:all');\n  }\n\n  /**\n   * Deactive this layer so it does NOT take pointer events.\n   * @returns {undefined}\n   */\n  deactivate () {\n    this.group_.setAttribute('style', 'pointer-events:none');\n  }\n\n  /**\n   * Set this layer visible or hidden based on 'visible' parameter.\n   * @param {boolean} visible - If true, make visible; otherwise, hide it.\n   * @returns {undefined}\n   */\n  setVisible (visible) {\n    const expected = visible === undefined || visible ? 'inline' : 'none';\n    const oldDisplay = this.group_.getAttribute('display');\n    if (oldDisplay !== expected) {\n      this.group_.setAttribute('display', expected);\n    }\n  }\n\n  /**\n   * Is this layer visible?\n   * @returns {boolean} True if visible.\n   */\n  isVisible () {\n    return this.group_.getAttribute('display') !== 'none';\n  }\n\n  /**\n   * Get layer opacity.\n   * @returns {Float} Opacity value.\n   */\n  getOpacity () {\n    const opacity = this.group_.getAttribute('opacity');\n    if (isNullish(opacity)) {\n      return 1;\n    }\n    return parseFloat(opacity);\n  }\n\n  /**\n   * Sets the opacity of this layer. If opacity is not a value between 0.0 and 1.0,\n   * nothing happens.\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n   */\n  setOpacity (opacity) {\n    if (typeof opacity === 'number' && opacity >= 0.0 && opacity <= 1.0) {\n      this.group_.setAttribute('opacity', opacity);\n    }\n  }\n\n  /**\n   * Append children to this layer.\n   * @param {SVGGElement} children - The children to append to this layer.\n   * @returns {undefined}\n   */\n  appendChildren (children) {\n    for (let i = 0; i < children.length; ++i) {\n      this.group_.append(children[i]);\n    }\n  }\n\n  /**\n  * @returns {SVGTitleElement|null}\n  */\n  getTitleElement () {\n    const len = this.group_.childNodes.length;\n    for (let i = 0; i < len; ++i) {\n      const child = this.group_.childNodes.item(i);\n      if (child && child.tagName === 'title') {\n        return child;\n      }\n    }\n    return null;\n  }\n\n  /**\n   * Set the name of this layer.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setName (name, hrService) {\n    const previousName = this.name_;\n    name = toXml(name);\n    // now change the underlying title element contents\n    const title = this.getTitleElement();\n    if (title) {\n      $(title).empty();\n      title.textContent = name;\n      this.name_ = name;\n      if (hrService) {\n        hrService.changeElement(title, {'#text': previousName});\n      }\n      return this.name_;\n    }\n    return null;\n  }\n\n  /**\n   * Remove this layer's group from the DOM. No more functions on group can be called after this.\n   * @returns {SVGGElement} The layer SVG group that was just removed.\n   */\n  removeGroup () {\n    const parent = this.group_.parentNode;\n    const group = parent.removeChild(this.group_);\n    this.group_ = undefined;\n    return group;\n  }\n}\n/**\n * @property {string} CLASS_NAME - class attribute assigned to all layer groups.\n */\nLayer.CLASS_NAME = 'layer';\n\n/**\n * @property {RegExp} CLASS_REGEX - Used to test presence of class Layer.CLASS_NAME\n */\nLayer.CLASS_REGEX = new RegExp('(\\\\s|^)' + Layer.CLASS_NAME + '(\\\\s|$)');\n\n/**\n * Add class `Layer.CLASS_NAME` to the element (usually `class='layer'`).\n *\n * @param {SVGGElement} elem - The SVG element to update\n * @returns {undefined}\n */\nfunction addLayerClass (elem) {\n  const classes = elem.getAttribute('class');\n  if (isNullish(classes) || !classes.length) {\n    elem.setAttribute('class', Layer.CLASS_NAME);\n  } else if (!Layer.CLASS_REGEX.test(classes)) {\n    elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);\n  }\n}\n\nexport default Layer;\n","/**\n * HistoryRecordingService component of history\n * @module history\n * @license MIT\n * @copyright 2016 Flint O'Brien\n */\n\nimport {\n  BatchCommand, MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand\n} from './history.js';\n\n/**\n * History recording service.\n *\n * A self-contained service interface for recording history. Once injected, no other dependencies\n * or globals are required (example: UndoManager, command types, etc.). Easy to mock for unit tests.\n * Built on top of history classes in history.js.\n *\n * There is a simple start/end interface for batch commands.\n *\n * HistoryRecordingService.NO_HISTORY is a singleton that can be passed in to functions\n * that record history. This helps when the caller requires that no history be recorded.\n *\n * The following will record history: insert, batch, insert.\n * @example\n * hrService = new history.HistoryRecordingService(this.undoMgr);\n * hrService.insertElement(elem, text);         // add simple command to history.\n * hrService.startBatchCommand('create two elements');\n * hrService.changeElement(elem, attrs, text);  // add to batchCommand\n * hrService.changeElement(elem, attrs2, text); // add to batchCommand\n * hrService.endBatchCommand();                  // add batch command with two change commands to history.\n * hrService.insertElement(elem, text);         // add simple command to history.\n *\n * @example\n * // Note that all functions return this, so commands can be chained, like so:\n * hrService\n *   .startBatchCommand('create two elements')\n *   .insertElement(elem, text)\n *   .changeElement(elem, attrs, text)\n *   .endBatchCommand();\n *\n * @memberof module:history\n */\nclass HistoryRecordingService {\n  /**\n  * @param {history.UndoManager|null} undoManager - The undo manager.\n  *     A value of `null` is valid for cases where no history recording is required.\n  *     See singleton: {@link module:history.HistoryRecordingService.HistoryRecordingService.NO_HISTORY}\n  */\n  constructor (undoManager) {\n    this.undoManager_ = undoManager;\n    this.currentBatchCommand_ = null;\n    this.batchCommandStack_ = [];\n  }\n\n  /**\n   * Start a batch command so multiple commands can recorded as a single history command.\n   * Requires a corresponding call to endBatchCommand. Start and end commands can be nested.\n   *\n   * @param {string} text - Optional string describing the batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  startBatchCommand (text) {\n    if (!this.undoManager_) { return this; }\n    this.currentBatchCommand_ = new BatchCommand(text);\n    this.batchCommandStack_.push(this.currentBatchCommand_);\n    return this;\n  }\n\n  /**\n   * End a batch command and add it to the history or a parent batch command.\n   * @returns {module:history.HistoryRecordingService}\n   */\n  endBatchCommand () {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      const batchCommand = this.currentBatchCommand_;\n      this.batchCommandStack_.pop();\n      const {length: len} = this.batchCommandStack_;\n      this.currentBatchCommand_ = len ? this.batchCommandStack_[len - 1] : null;\n      this.addCommand_(batchCommand);\n    }\n    return this;\n  }\n\n  /**\n   * Add a `MoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was moved\n   * @param {Element} oldNextSibling - The element's next sibling before it was moved\n   * @param {Element} oldParent - The element's parent before it was moved\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  moveElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new MoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add an `InsertElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was added\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  insertElement (elem, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new InsertElementCommand(elem, text));\n    return this;\n  }\n\n  /**\n   * Add a `RemoveElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was removed\n   * @param {Element} oldNextSibling - The element's next sibling before it was removed\n   * @param {Element} oldParent - The element's parent before it was removed\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  removeElement (elem, oldNextSibling, oldParent, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new RemoveElementCommand(elem, oldNextSibling, oldParent, text));\n    return this;\n  }\n\n  /**\n   * Add a `ChangeElementCommand` to the history or current batch command.\n   * @param {Element} elem - The DOM element that was changed\n   * @param {module:history.CommandAttributes} attrs - An object with the attributes to be changed and the values they had *before* the change\n   * @param {string} [text] - An optional string visible to user related to this change\n   * @returns {module:history.HistoryRecordingService}\n   */\n  changeElement (elem, attrs, text) {\n    if (!this.undoManager_) { return this; }\n    this.addCommand_(new ChangeElementCommand(elem, attrs, text));\n    return this;\n  }\n\n  /**\n   * Private function to add a command to the history or current batch command.\n   * @private\n   * @param {Command} cmd\n   * @returns {module:history.HistoryRecordingService|undefined}\n   */\n  addCommand_ (cmd) {\n    if (!this.undoManager_) { return this; }\n    if (this.currentBatchCommand_) {\n      this.currentBatchCommand_.addSubCommand(cmd);\n    } else {\n      this.undoManager_.addCommandToHistory(cmd);\n    }\n    return undefined;\n  }\n}\n/**\n * @memberof module:history.HistoryRecordingService\n * @property {module:history.HistoryRecordingService} NO_HISTORY - Singleton that can be passed to functions that record history, but the caller requires that no history be recorded.\n */\nHistoryRecordingService.NO_HISTORY = new HistoryRecordingService();\nexport default HistoryRecordingService;\n","/* globals jQuery */\n/**\n * Tools for drawing\n * @module draw\n * @license MIT\n * @copyright 2011 Jeff Schiller\n */\n\nimport Layer from './layer.js';\nimport HistoryRecordingService from './historyrecording.js';\n\nimport {NS} from './namespaces.js';\nimport {isOpera} from './browser.js';\nimport {\n  toXml, getElem,\n  copyElem as utilCopyElem\n} from './utilities.js';\nimport {\n  BatchCommand, RemoveElementCommand, MoveElementCommand, ChangeElementCommand\n} from './history.js';\n\nconst $ = jQuery;\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use'.split(',');\n\nconst RandomizeModes = {\n  LET_DOCUMENT_DECIDE: 0,\n  ALWAYS_RANDOMIZE: 1,\n  NEVER_RANDOMIZE: 2\n};\nlet randIds = RandomizeModes.LET_DOCUMENT_DECIDE;\n// Array with current disabled elements (for in-group editing)\nlet disabledElems = [];\n\n/**\n * Get a HistoryRecordingService.\n * @param {module:history.HistoryRecordingService} [hrService] - if exists, return it instead of creating a new service.\n * @returns {module:history.HistoryRecordingService}\n */\nfunction historyRecordingService (hrService) {\n  return hrService || new HistoryRecordingService(canvas_.undoMgr);\n}\n\n/**\n * Find the layer name in a group element.\n * @param {Element} group The group element to search in.\n * @returns {string} The layer name or empty string.\n */\nfunction findLayerNameInGroup (group) {\n  return $('title', group).text() ||\n    (isOpera() && group.querySelectorAll\n      // Hack for Opera 10.60\n      ? $(group.querySelectorAll('title')).text()\n      : '');\n}\n\n/**\n * Given a set of names, return a new unique name.\n * @param {string[]} existingLayerNames - Existing layer names.\n * @returns {string} - The new name.\n */\nfunction getNewLayerName (existingLayerNames) {\n  let i = 1;\n  // TODO(codedread): What about internationalization of \"Layer\"?\n  while (existingLayerNames.includes(('Layer ' + i))) { i++; }\n  return 'Layer ' + i;\n}\n\n/**\n * This class encapsulates the concept of a SVG-edit drawing.\n */\nexport class Drawing {\n  /**\n  * @param {SVGSVGElement} svgElem - The SVG DOM Element that this JS object\n  *     encapsulates.  If the svgElem has a se:nonce attribute on it, then\n  *     IDs will use the nonce as they are generated.\n  * @param {string} [optIdPrefix=svg_] - The ID prefix to use.\n  * @throws {Error} If not initialized with an SVG element\n  */\n  constructor (svgElem, optIdPrefix) {\n    if (!svgElem || !svgElem.tagName || !svgElem.namespaceURI ||\n      svgElem.tagName !== 'svg' || svgElem.namespaceURI !== NS.SVG) {\n      throw new Error('Error: svgedit.draw.Drawing instance initialized without a <svg> element');\n    }\n\n    /**\n    * The SVG DOM Element that represents this drawing.\n    * @type {SVGSVGElement}\n    */\n    this.svgElem_ = svgElem;\n\n    /**\n    * The latest object number used in this drawing.\n    * @type {Integer}\n    */\n    this.obj_num = 0;\n\n    /**\n    * The prefix to prepend to each element id in the drawing.\n    * @type {string}\n    */\n    this.idPrefix = optIdPrefix || 'svg_';\n\n    /**\n    * An array of released element ids to immediately reuse.\n    * @type {Integer[]}\n    */\n    this.releasedNums = [];\n\n    /**\n    * The z-ordered array of Layer objects. Each layer has a name\n    * and group element.\n    * The first layer is the one at the bottom of the rendering.\n    * @type {Layer[]}\n    */\n    this.all_layers = [];\n\n    /**\n    * Map of all_layers by name.\n    *\n    * Note: Layers are ordered, but referenced externally by name; so, we need both container\n    * types depending on which function is called (i.e. all_layers and layer_map).\n    *\n    * @type {PlainObject.<string, Layer>}\n    */\n    this.layer_map = {};\n\n    /**\n    * The current layer being used.\n    * @type {Layer}\n    */\n    this.current_layer = null;\n\n    /**\n    * The nonce to use to uniquely identify elements across drawings.\n    * @type {!String}\n    */\n    this.nonce_ = '';\n    const n = this.svgElem_.getAttributeNS(NS.SE, 'nonce');\n    // If already set in the DOM, use the nonce throughout the document\n    // else, if randomizeIds(true) has been called, create and set the nonce.\n    if (n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {\n      this.nonce_ = n;\n    } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {\n      this.setNonce(Math.floor(Math.random() * 100001));\n    }\n  }\n\n  /**\n   * @param {string} id Element ID to retrieve\n   * @returns {Element} SVG element within the root SVGSVGElement\n  */\n  getElem_ (id) {\n    if (this.svgElem_.querySelector) {\n      // querySelector lookup\n      return this.svgElem_.querySelector('#' + id);\n    }\n    // jQuery lookup: twice as slow as xpath in FF\n    return $(this.svgElem_).find('[id=' + id + ']')[0];\n  }\n\n  /**\n   * @returns {SVGSVGElement}\n   */\n  getSvgElem () {\n    return this.svgElem_;\n  }\n\n  /**\n   * @returns {!(string|Integer)} The previously set nonce\n   */\n  getNonce () {\n    return this.nonce_;\n  }\n\n  /**\n   * @param {!(string|Integer)} n The nonce to set\n   * @returns {undefined}\n   */\n  setNonce (n) {\n    this.svgElem_.setAttributeNS(NS.XMLNS, 'xmlns:se', NS.SE);\n    this.svgElem_.setAttributeNS(NS.SE, 'se:nonce', n);\n    this.nonce_ = n;\n  }\n\n  /**\n   * Clears any previously set nonce.\n   * @returns {undefined}\n   */\n  clearNonce () {\n    // We deliberately leave any se:nonce attributes alone,\n    // we just don't use it to randomize ids.\n    this.nonce_ = '';\n  }\n\n  /**\n   * Returns the latest object id as a string.\n   * @returns {string} The latest object Id.\n   */\n  getId () {\n    return this.nonce_\n      ? this.idPrefix + this.nonce_ + '_' + this.obj_num\n      : this.idPrefix + this.obj_num;\n  }\n\n  /**\n   * Returns the next object Id as a string.\n   * @returns {string} The next object Id to use.\n   */\n  getNextId () {\n    const oldObjNum = this.obj_num;\n    let restoreOldObjNum = false;\n\n    // If there are any released numbers in the release stack,\n    // use the last one instead of the next obj_num.\n    // We need to temporarily use obj_num as that is what getId() depends on.\n    if (this.releasedNums.length > 0) {\n      this.obj_num = this.releasedNums.pop();\n      restoreOldObjNum = true;\n    } else {\n      // If we are not using a released id, then increment the obj_num.\n      this.obj_num++;\n    }\n\n    // Ensure the ID does not exist.\n    let id = this.getId();\n    while (this.getElem_(id)) {\n      if (restoreOldObjNum) {\n        this.obj_num = oldObjNum;\n        restoreOldObjNum = false;\n      }\n      this.obj_num++;\n      id = this.getId();\n    }\n    // Restore the old object number if required.\n    if (restoreOldObjNum) {\n      this.obj_num = oldObjNum;\n    }\n    return id;\n  }\n\n  /**\n   * Releases the object Id, letting it be used as the next id in getNextId().\n   * This method DOES NOT remove any elements from the DOM, it is expected\n   * that client code will do this.\n   * @param {string} id - The id to release.\n   * @returns {boolean} True if the id was valid to be released, false otherwise.\n  */\n  releaseId (id) {\n    // confirm if this is a valid id for this Document, else return false\n    const front = this.idPrefix + (this.nonce_ ? this.nonce_ + '_' : '');\n    if (typeof id !== 'string' || !id.startsWith(front)) {\n      return false;\n    }\n    // extract the obj_num of this id\n    const num = parseInt(id.substr(front.length));\n\n    // if we didn't get a positive number or we already released this number\n    // then return false.\n    if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {\n      return false;\n    }\n\n    // push the released number into the released queue\n    this.releasedNums.push(num);\n\n    return true;\n  }\n\n  /**\n   * Returns the number of layers in the current drawing.\n   * @returns {Integer} The number of layers in the current drawing.\n  */\n  getNumLayers () {\n    return this.all_layers.length;\n  }\n\n  /**\n   * Check if layer with given name already exists.\n   * @param {string} name - The layer name to check\n   * @returns {boolean}\n  */\n  hasLayer (name) {\n    return this.layer_map[name] !== undefined;\n  }\n\n  /**\n   * Returns the name of the ith layer. If the index is out of range, an empty string is returned.\n   * @param {Integer} i - The zero-based index of the layer you are querying.\n   * @returns {string} The name of the ith layer (or the empty string if none found)\n  */\n  getLayerName (i) {\n    return i >= 0 && i < this.getNumLayers() ? this.all_layers[i].getName() : '';\n  }\n\n  /**\n   * @returns {SVGGElement|null} The SVGGElement representing the current layer.\n   */\n  getCurrentLayer () {\n    return this.current_layer ? this.current_layer.getGroup() : null;\n  }\n\n  /**\n   * Get a layer by name.\n   * @param {string} name\n   * @returns {SVGGElement} The SVGGElement representing the named layer or null.\n   */\n  getLayerByName (name) {\n    const layer = this.layer_map[name];\n    return layer ? layer.getGroup() : null;\n  }\n\n  /**\n   * Returns the name of the currently selected layer. If an error occurs, an empty string\n   * is returned.\n   * @returns {string} The name of the currently active layer (or the empty string if none found).\n  */\n  getCurrentLayerName () {\n    return this.current_layer ? this.current_layer.getName() : '';\n  }\n\n  /**\n   * Set the current layer's name.\n   * @param {string} name - The new name.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {string|null} The new name if changed; otherwise, null.\n   */\n  setCurrentLayerName (name, hrService) {\n    let finalName = null;\n    if (this.current_layer) {\n      const oldName = this.current_layer.getName();\n      finalName = this.current_layer.setName(name, hrService);\n      if (finalName) {\n        delete this.layer_map[oldName];\n        this.layer_map[finalName] = this.current_layer;\n      }\n    }\n    return finalName;\n  }\n\n  /**\n   * Set the current layer's position.\n   * @param {Integer} newpos - The zero-based index of the new position of the layer. Range should be 0 to layers-1\n   * @returns {{title: SVGGElement, previousName: string}|null} If the name was changed, returns {title:SVGGElement, previousName:string}; otherwise null.\n   */\n  setCurrentLayerPosition (newpos) {\n    const layerCount = this.getNumLayers();\n    if (!this.current_layer || newpos < 0 || newpos >= layerCount) {\n      return null;\n    }\n\n    let oldpos;\n    for (oldpos = 0; oldpos < layerCount; ++oldpos) {\n      if (this.all_layers[oldpos] === this.current_layer) { break; }\n    }\n    // some unknown error condition (current_layer not in all_layers)\n    if (oldpos === layerCount) { return null; }\n\n    if (oldpos !== newpos) {\n      // if our new position is below us, we need to insert before the node after newpos\n      const currentGroup = this.current_layer.getGroup();\n      const oldNextSibling = currentGroup.nextSibling;\n\n      let refGroup = null;\n      if (newpos > oldpos) {\n        if (newpos < layerCount - 1) {\n          refGroup = this.all_layers[newpos + 1].getGroup();\n        }\n      // if our new position is above us, we need to insert before the node at newpos\n      } else {\n        refGroup = this.all_layers[newpos].getGroup();\n      }\n      this.svgElem_.insertBefore(currentGroup, refGroup); // Ok to replace with `refGroup.before(currentGroup);`?\n\n      this.identifyLayers();\n      this.setCurrentLayer(this.getLayerName(newpos));\n\n      return {\n        currentGroup,\n        oldNextSibling\n      };\n    }\n    return null;\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeLayer (hrService) {\n    const currentGroup = this.current_layer.getGroup();\n    const prevGroup = $(currentGroup).prev()[0];\n    if (!prevGroup) { return; }\n\n    hrService.startBatchCommand('Merge Layer');\n\n    const layerNextSibling = currentGroup.nextSibling;\n    hrService.removeElement(currentGroup, layerNextSibling, this.svgElem_);\n\n    while (currentGroup.firstChild) {\n      const child = currentGroup.firstChild;\n      if (child.localName === 'title') {\n        hrService.removeElement(child, child.nextSibling, currentGroup);\n        child.remove();\n        continue;\n      }\n      const oldNextSibling = child.nextSibling;\n      prevGroup.append(child);\n      hrService.moveElement(child, oldNextSibling, currentGroup);\n    }\n\n    // Remove current layer's group\n    this.current_layer.removeGroup();\n    // Remove the current layer and set the previous layer as the new current layer\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index > 0) {\n      const name = this.current_layer.getName();\n      this.current_layer = this.all_layers[index - 1];\n      this.all_layers.splice(index, 1);\n      delete this.layer_map[name];\n    }\n\n    hrService.endBatchCommand();\n  }\n\n  /**\n  * @param {module:history.HistoryRecordingService} hrService\n  * @returns {undefined}\n  */\n  mergeAllLayers (hrService) {\n    // Set the current layer to the last layer.\n    this.current_layer = this.all_layers[this.all_layers.length - 1];\n\n    hrService.startBatchCommand('Merge all Layers');\n    while (this.all_layers.length > 1) {\n      this.mergeLayer(hrService);\n    }\n    hrService.endBatchCommand();\n  }\n\n  /**\n   * Sets the current layer. If the name is not a valid layer name, then this\n   * function returns `false`. Otherwise it returns `true`. This is not an\n   * undo-able action.\n   * @param {string} name - The name of the layer you want to switch to.\n   * @returns {boolean} `true` if the current layer was switched, otherwise `false`\n   */\n  setCurrentLayer (name) {\n    const layer = this.layer_map[name];\n    if (layer) {\n      if (this.current_layer) {\n        this.current_layer.deactivate();\n      }\n      this.current_layer = layer;\n      this.current_layer.activate();\n      return true;\n    }\n    return false;\n  }\n\n  /**\n   * Deletes the current layer from the drawing and then clears the selection.\n   * This function then calls the 'changed' handler.  This is an undoable action.\n   * @todo Does this actually call the 'changed' handler?\n   * @returns {SVGGElement} The SVGGElement of the layer removed or null.\n   */\n  deleteCurrentLayer () {\n    if (this.current_layer && this.getNumLayers() > 1) {\n      const oldLayerGroup = this.current_layer.removeGroup();\n      this.identifyLayers();\n      return oldLayerGroup;\n    }\n    return null;\n  }\n\n  /**\n   * Updates layer system and sets the current layer to the\n   * top-most layer (last `<g>` child of this drawing).\n   * @returns {undefined}\n  */\n  identifyLayers () {\n    this.all_layers = [];\n    this.layer_map = {};\n    const numchildren = this.svgElem_.childNodes.length;\n    // loop through all children of SVG element\n    const orphans = [], layernames = [];\n    let layer = null;\n    let childgroups = false;\n    for (let i = 0; i < numchildren; ++i) {\n      const child = this.svgElem_.childNodes.item(i);\n      // for each g, find its layer name\n      if (child && child.nodeType === 1) {\n        if (child.tagName === 'g') {\n          childgroups = true;\n          const name = findLayerNameInGroup(child);\n          if (name) {\n            layernames.push(name);\n            layer = new Layer(name, child);\n            this.all_layers.push(layer);\n            this.layer_map[name] = layer;\n          } else {\n            // if group did not have a name, it is an orphan\n            orphans.push(child);\n          }\n        } else if (visElems.includes(child.nodeName)) {\n          // Child is \"visible\" (i.e. not a <title> or <defs> element), so it is an orphan\n          orphans.push(child);\n        }\n      }\n    }\n\n    // If orphans or no layers found, create a new layer and add all the orphans to it\n    if (orphans.length > 0 || !childgroups) {\n      layer = new Layer(getNewLayerName(layernames), null, this.svgElem_);\n      layer.appendChildren(orphans);\n      this.all_layers.push(layer);\n      this.layer_map[name] = layer;\n    } else {\n      layer.activate();\n    }\n    this.current_layer = layer;\n  }\n\n  /**\n   * Creates a new top-level layer in the drawing with the given name and\n   * makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  createLayer (name, hrService) {\n    if (this.current_layer) {\n      this.current_layer.deactivate();\n    }\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Crate new layer and add to DOM as last layer\n    const layer = new Layer(name, null, this.svgElem_);\n    // Like to assume hrService exists, but this is backwards compatible with old version of createLayer.\n    if (hrService) {\n      hrService.startBatchCommand('Create Layer');\n      hrService.insertElement(layer.getGroup());\n      hrService.endBatchCommand();\n    }\n\n    this.all_layers.push(layer);\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return layer.getGroup();\n  }\n\n  /**\n   * Creates a copy of the current layer with the given name and makes it the current layer.\n   * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n   * @param {module:history.HistoryRecordingService} hrService - History recording service\n   * @returns {SVGGElement} The SVGGElement of the new layer, which is\n   *     also the current layer of this drawing.\n  */\n  cloneLayer (name, hrService) {\n    if (!this.current_layer) { return null; }\n    this.current_layer.deactivate();\n    // Check for duplicate name.\n    if (name === undefined || name === null || name === '' || this.layer_map[name]) {\n      name = getNewLayerName(Object.keys(this.layer_map));\n    }\n\n    // Create new group and add to DOM just after current_layer\n    const currentGroup = this.current_layer.getGroup();\n    const layer = new Layer(name, currentGroup, this.svgElem_);\n    const group = layer.getGroup();\n\n    // Clone children\n    const children = currentGroup.childNodes;\n    for (let index = 0; index < children.length; index++) {\n      const ch = children[index];\n      if (ch.localName === 'title') { continue; }\n      group.append(this.copyElem(ch));\n    }\n\n    if (hrService) {\n      hrService.startBatchCommand('Duplicate Layer');\n      hrService.insertElement(group);\n      hrService.endBatchCommand();\n    }\n\n    // Update layer containers and current_layer.\n    const index = this.all_layers.indexOf(this.current_layer);\n    if (index >= 0) {\n      this.all_layers.splice(index + 1, 0, layer);\n    } else {\n      this.all_layers.push(layer);\n    }\n    this.layer_map[name] = layer;\n    this.current_layer = layer;\n    return group;\n  }\n\n  /**\n   * Returns whether the layer is visible.  If the layer name is not valid,\n   * then this function returns `false`.\n   * @param {string} layerName - The name of the layer which you want to query.\n   * @returns {boolean} The visibility state of the layer, or `false` if the layer name was invalid.\n  */\n  getLayerVisibility (layerName) {\n    const layer = this.layer_map[layerName];\n    return layer ? layer.isVisible() : false;\n  }\n\n  /**\n   * Sets the visibility of the layer. If the layer name is not valid, this\n   * function returns `null`, otherwise it returns the `SVGElement` representing\n   * the layer. This is an undo-able action.\n   * @param {string} layerName - The name of the layer to change the visibility\n   * @param {boolean} bVisible - Whether the layer should be visible\n   * @returns {?SVGGElement} The SVGGElement representing the layer if the\n   *   `layerName` was valid, otherwise `null`.\n  */\n  setLayerVisibility (layerName, bVisible) {\n    if (typeof bVisible !== 'boolean') {\n      return null;\n    }\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    layer.setVisible(bVisible);\n    return layer.getGroup();\n  }\n\n  /**\n   * Returns the opacity of the given layer.  If the input name is not a layer, `null` is returned.\n   * @param {string} layerName - name of the layer on which to get the opacity\n   * @returns {?Float} The opacity value of the given layer.  This will be a value between 0.0 and 1.0, or `null`\n   * if `layerName` is not a valid layer\n  */\n  getLayerOpacity (layerName) {\n    const layer = this.layer_map[layerName];\n    if (!layer) { return null; }\n    return layer.getOpacity();\n  }\n\n  /**\n   * Sets the opacity of the given layer.  If the input name is not a layer,\n   * nothing happens. If opacity is not a value between 0.0 and 1.0, then\n   * nothing happens.\n   * NOTE: this function exists solely to apply a highlighting/de-emphasis\n   * effect to a layer. When it is possible for a user to affect the opacity\n   * of a layer, we will need to allow this function to produce an undo-able\n   * action.\n   * @param {string} layerName - Name of the layer on which to set the opacity\n   * @param {Float} opacity - A float value in the range 0.0-1.0\n   * @returns {undefined}\n  */\n  setLayerOpacity (layerName, opacity) {\n    if (typeof opacity !== 'number' || opacity < 0.0 || opacity > 1.0) {\n      return;\n    }\n    const layer = this.layer_map[layerName];\n    if (layer) {\n      layer.setOpacity(opacity);\n    }\n  }\n\n  /**\n   * Create a clone of an element, updating its ID and its children's IDs when needed.\n   * @param {Element} el - DOM element to clone\n   * @returns {Element}\n   */\n  copyElem (el) {\n    const that = this;\n    const getNextIdClosure = function () { return that.getNextId(); };\n    return utilCopyElem(el, getNextIdClosure);\n  }\n}\n\n/**\n * Called to ensure that drawings will or will not have randomized ids.\n * The currentDrawing will have its nonce set if it doesn't already.\n * @function module:draw.randomizeIds\n * @param {boolean} enableRandomization - flag indicating if documents should have randomized ids\n * @param {draw.Drawing} currentDrawing\n * @returns {undefined}\n */\nexport const randomizeIds = function (enableRandomization, currentDrawing) {\n  randIds = enableRandomization === false\n    ? RandomizeModes.NEVER_RANDOMIZE\n    : RandomizeModes.ALWAYS_RANDOMIZE;\n\n  if (randIds === RandomizeModes.ALWAYS_RANDOMIZE && !currentDrawing.getNonce()) {\n    currentDrawing.setNonce(Math.floor(Math.random() * 100001));\n  } else if (randIds === RandomizeModes.NEVER_RANDOMIZE && currentDrawing.getNonce()) {\n    currentDrawing.clearNonce();\n  }\n};\n\n// Layer API Functions\n\n/**\n* Group: Layers\n*/\n\n/**\n * @see {@link https://api.jquery.com/jQuery.data/}\n * @name external:jQuery.data\n */\n\n/**\n * @interface module:draw.DrawCanvasInit\n * @property {module:path.pathActions} pathActions\n * @property {external:jQuery.data} elData\n * @property {module:history.UndoManager} undoMgr\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentGroup\n * @returns {Element}\n */\n/**\n * @function module:draw.DrawCanvasInit#setCurrentGroup\n * @param {Element} cg\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSelectedElements\n * @returns {Element[]} the array with selected DOM elements\n*/\n/**\n * @function module:draw.DrawCanvasInit#getSVGContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:draw.DrawCanvasInit#getCurrentDrawing\n * @returns {module:draw.Drawing}\n */\n/**\n * @function module:draw.DrawCanvasInit#clearSelection\n * @param {boolean} [noCall] - When `true`, does not call the \"selected\" handler\n * @returns {undefined}\n*/\n/**\n * Run the callback function associated with the given event\n * @function module:draw.DrawCanvasInit#call\n * @param {\"changed\"|\"contextset\"} ev - String with the event name\n * @param {module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset} arg - Argument to pass through to the callback\n * function. If the event is \"changed\", a (single-item) array of `Element`s is\n * passed. If the event is \"contextset\", the arg is `null` or `Element`.\n * @returns {undefined}\n */\n/**\n * @function module:draw.DrawCanvasInit#addCommandToHistory\n * @param {Command} cmd\n * @returns {undefined}\n*/\n/**\n * @function module:draw.DrawCanvasInit#changeSVGContent\n * @returns {undefined}\n */\n\nlet canvas_;\n/**\n* @function module:draw.init\n* @param {module:draw.DrawCanvasInit} canvas\n* @returns {undefined}\n*/\nexport const init = function (canvas) {\n  canvas_ = canvas;\n};\n\n/**\n* Updates layer system.\n* @function module:draw.identifyLayers\n* @returns {undefined}\n*/\nexport const identifyLayers = function () {\n  leaveContext();\n  canvas_.getCurrentDrawing().identifyLayers();\n};\n\n/**\n* Creates a new top-level layer in the drawing with the given name, sets the current layer\n* to it, and then clears the selection. This function then calls the 'changed' handler.\n* This is an undoable action.\n* @function module:draw.createLayer\n* @param {string} name - The given name\n* @param {module:history.HistoryRecordingService} hrService\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nexport const createLayer = function (name, hrService) {\n  const newLayer = canvas_.getCurrentDrawing().createLayer(\n    name,\n    historyRecordingService(hrService)\n  );\n  canvas_.clearSelection();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n * Creates a new top-level layer in the drawing with the given name, copies all the current layer's contents\n * to it, and then clears the selection. This function then calls the 'changed' handler.\n * This is an undoable action.\n * @function module:draw.cloneLayer\n * @param {string} name - The given name. If the layer name exists, a new name will be generated.\n * @param {module:history.HistoryRecordingService} hrService - History recording service\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @returns {undefined}\n */\nexport const cloneLayer = function (name, hrService) {\n  // Clone the current layer and make the cloned layer the new current layer\n  const newLayer = canvas_.getCurrentDrawing().cloneLayer(name, historyRecordingService(hrService));\n\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.call('changed', [newLayer]);\n};\n\n/**\n* Deletes the current layer from the drawing and then clears the selection. This function\n* then calls the 'changed' handler. This is an undoable action.\n* @function module:draw.deleteCurrentLayer\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} `true` if an old layer group was found to delete\n*/\nexport const deleteCurrentLayer = function () {\n  let currentLayer = canvas_.getCurrentDrawing().getCurrentLayer();\n  const {nextSibling} = currentLayer;\n  const parent = currentLayer.parentNode;\n  currentLayer = canvas_.getCurrentDrawing().deleteCurrentLayer();\n  if (currentLayer) {\n    const batchCmd = new BatchCommand('Delete Layer');\n    // store in our Undo History\n    batchCmd.addSubCommand(new RemoveElementCommand(currentLayer, nextSibling, parent));\n    canvas_.addCommandToHistory(batchCmd);\n    canvas_.clearSelection();\n    canvas_.call('changed', [parent]);\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the current layer. If the name is not a valid layer name, then this function returns\n* false. Otherwise it returns true. This is not an undo-able action.\n* @function module:draw.setCurrentLayer\n* @param {string} name - The name of the layer you want to switch to.\n* @returns {boolean} true if the current layer was switched, otherwise false\n*/\nexport const setCurrentLayer = function (name) {\n  const result = canvas_.getCurrentDrawing().setCurrentLayer(toXml(name));\n  if (result) {\n    canvas_.clearSelection();\n  }\n  return result;\n};\n\n/**\n* Renames the current layer. If the layer name is not valid (i.e. unique), then this function\n* does nothing and returns `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.renameCurrentLayer\n* @param {string} newName - the new name you want to give the current layer. This name must\n* be unique among all layer names.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Whether the rename succeeded\n*/\nexport const renameCurrentLayer = function (newName) {\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getCurrentLayer();\n  if (layer) {\n    const result = drawing.setCurrentLayerName(newName, historyRecordingService());\n    if (result) {\n      canvas_.call('changed', [layer]);\n      return true;\n    }\n  }\n  return false;\n};\n\n/**\n* Changes the position of the current layer to the new value. If the new index is not valid,\n* this function does nothing and returns false, otherwise it returns true. This is an\n* undo-able action.\n* @function module:draw.setCurrentLayerPosition\n* @param {Integer} newPos - The zero-based index of the new position of the layer. This should be between\n* 0 and (number of layers - 1)\n* @returns {boolean} `true` if the current layer position was changed, `false` otherwise.\n*/\nexport const setCurrentLayerPosition = function (newPos) {\n  const drawing = canvas_.getCurrentDrawing();\n  const result = drawing.setCurrentLayerPosition(newPos);\n  if (result) {\n    canvas_.addCommandToHistory(new MoveElementCommand(result.currentGroup, result.oldNextSibling, canvas_.getSVGContent()));\n    return true;\n  }\n  return false;\n};\n\n/**\n* Sets the visibility of the layer. If the layer name is not valid, this function return\n* `false`, otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.setLayerVisibility\n* @param {string} layerName - The name of the layer to change the visibility\n* @param {boolean} bVisible - Whether the layer should be visible\n* @returns {boolean} true if the layer's visibility was set, false otherwise\n*/\nexport const setLayerVisibility = function (layerName, bVisible) {\n  const drawing = canvas_.getCurrentDrawing();\n  const prevVisibility = drawing.getLayerVisibility(layerName);\n  const layer = drawing.setLayerVisibility(layerName, bVisible);\n  if (layer) {\n    const oldDisplay = prevVisibility ? 'inline' : 'none';\n    canvas_.addCommandToHistory(new ChangeElementCommand(layer, {display: oldDisplay}, 'Layer Visibility'));\n  } else {\n    return false;\n  }\n\n  if (layer === drawing.getCurrentLayer()) {\n    canvas_.clearSelection();\n    canvas_.pathActions.clear();\n  }\n  // call('changed', [selected]);\n  return true;\n};\n\n/**\n* Moves the selected elements to layerName. If the name is not a valid layer name, then `false`\n* is returned. Otherwise it returns `true`. This is an undo-able action.\n* @function module:draw.moveSelectedToLayer\n* @param {string} layerName - The name of the layer you want to which you want to move the selected elements\n* @returns {boolean} Whether the selected elements were moved to the layer.\n*/\nexport const moveSelectedToLayer = function (layerName) {\n  // find the layer\n  const drawing = canvas_.getCurrentDrawing();\n  const layer = drawing.getLayerByName(layerName);\n  if (!layer) { return false; }\n\n  const batchCmd = new BatchCommand('Move Elements to Layer');\n\n  // loop for each selected element and move it\n  const selElems = canvas_.getSelectedElements();\n  let i = selElems.length;\n  while (i--) {\n    const elem = selElems[i];\n    if (!elem) { continue; }\n    const oldNextSibling = elem.nextSibling;\n    // TODO: this is pretty brittle!\n    const oldLayer = elem.parentNode;\n    layer.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldLayer));\n  }\n\n  canvas_.addCommandToHistory(batchCmd);\n\n  return true;\n};\n\n/**\n* @function module:draw.mergeLayer\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeLayer = function (hrService) {\n  canvas_.getCurrentDrawing().mergeLayer(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* @function module:draw.mergeAllLayers\n* @param {module:history.HistoryRecordingService} hrService\n* @returns {undefined}\n*/\nexport const mergeAllLayers = function (hrService) {\n  canvas_.getCurrentDrawing().mergeAllLayers(historyRecordingService(hrService));\n  canvas_.clearSelection();\n  leaveContext();\n  canvas_.changeSVGContent();\n};\n\n/**\n* Return from a group context to the regular kind, make any previously\n* disabled elements enabled again.\n* @function module:draw.leaveContext\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const leaveContext = function () {\n  const len = disabledElems.length;\n  if (len) {\n    for (let i = 0; i < len; i++) {\n      const elem = disabledElems[i];\n      const orig = canvas_.elData(elem, 'orig_opac');\n      if (orig !== 1) {\n        elem.setAttribute('opacity', orig);\n      } else {\n        elem.removeAttribute('opacity');\n      }\n      elem.setAttribute('style', 'pointer-events: inherit');\n    }\n    disabledElems = [];\n    canvas_.clearSelection(true);\n    canvas_.call('contextset', null);\n  }\n  canvas_.setCurrentGroup(null);\n};\n\n/**\n* Set the current context (for in-group editing).\n* @function module:draw.setContext\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:contextset\n* @returns {undefined}\n*/\nexport const setContext = function (elem) {\n  leaveContext();\n  if (typeof elem === 'string') {\n    elem = getElem(elem);\n  }\n\n  // Edit inside this group\n  canvas_.setCurrentGroup(elem);\n\n  // Disable other elements\n  $(elem).parentsUntil('#svgcontent').andSelf().siblings().each(function () {\n    const opac = this.getAttribute('opacity') || 1;\n    // Store the original's opacity\n    canvas_.elData(this, 'orig_opac', opac);\n    this.setAttribute('opacity', opac * 0.33);\n    this.setAttribute('style', 'pointer-events: none');\n    disabledElems.push(this);\n  });\n\n  canvas_.clearSelection();\n  canvas_.call('contextset', canvas_.getCurrentGroup());\n};\n\n/**\n* @memberof module:draw\n* @class Layer\n* @see {@link module:layer.Layer}\n*/\nexport {Layer};\n","/**\n * Tools for SVG sanitization\n * @module sanitize\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {getReverseNS, NS} from './namespaces.js';\nimport {isGecko} from './browser.js';\nimport {getHref, setHref, getUrlFromAttr} from './utilities.js';\n\nconst REVERSE_NS = getReverseNS();\n\n// this defines which elements and attributes that we support\nconst svgWhiteList_ = {\n  // SVG Elements\n  a: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'xlink:href', 'xlink:title'],\n  circle: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'r', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  clipPath: ['class', 'clipPathUnits', 'id'],\n  defs: [],\n  style: ['type'],\n  desc: [],\n  ellipse: ['class', 'clip-path', 'clip-rule', 'cx', 'cy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  feGaussianBlur: ['class', 'color-interpolation-filters', 'id', 'requiredFeatures', 'stdDeviation'],\n  filter: ['class', 'color-interpolation-filters', 'filterRes', 'filterUnits', 'height', 'id', 'primitiveUnits', 'requiredFeatures', 'width', 'x', 'xlink:href', 'y'],\n  foreignObject: ['class', 'font-size', 'height', 'id', 'opacity', 'requiredFeatures', 'style', 'transform', 'width', 'x', 'y'],\n  g: ['class', 'clip-path', 'clip-rule', 'id', 'display', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'font-family', 'font-size', 'font-style', 'font-weight', 'text-anchor'],\n  image: ['class', 'clip-path', 'clip-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'style', 'systemLanguage', 'transform', 'width', 'x', 'xlink:href', 'xlink:title', 'y'],\n  line: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'x1', 'x2', 'y1', 'y2'],\n  linearGradient: ['class', 'id', 'gradientTransform', 'gradientUnits', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'x1', 'x2', 'xlink:href', 'y1', 'y2'],\n  marker: ['id', 'class', 'markerHeight', 'markerUnits', 'markerWidth', 'orient', 'preserveAspectRatio', 'refX', 'refY', 'systemLanguage', 'viewBox'],\n  mask: ['class', 'height', 'id', 'maskContentUnits', 'maskUnits', 'width', 'x', 'y'],\n  metadata: ['class', 'id'],\n  path: ['class', 'clip-path', 'clip-rule', 'd', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  pattern: ['class', 'height', 'id', 'patternContentUnits', 'patternTransform', 'patternUnits', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xlink:href', 'y'],\n  polygon: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'id', 'class', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  polyline: ['class', 'clip-path', 'clip-rule', 'id', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'opacity', 'points', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform'],\n  radialGradient: ['class', 'cx', 'cy', 'fx', 'fy', 'gradientTransform', 'gradientUnits', 'id', 'r', 'requiredFeatures', 'spreadMethod', 'systemLanguage', 'xlink:href'],\n  rect: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'opacity', 'requiredFeatures', 'rx', 'ry', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'width', 'x', 'y'],\n  stop: ['class', 'id', 'offset', 'requiredFeatures', 'stop-color', 'stop-opacity', 'style', 'systemLanguage'],\n  svg: ['class', 'clip-path', 'clip-rule', 'filter', 'id', 'height', 'mask', 'preserveAspectRatio', 'requiredFeatures', 'style', 'systemLanguage', 'viewBox', 'width', 'x', 'xmlns', 'xmlns:se', 'xmlns:xlink', 'y'],\n  switch: ['class', 'id', 'requiredFeatures', 'systemLanguage'],\n  symbol: ['class', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'opacity', 'preserveAspectRatio', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'transform', 'viewBox'],\n  text: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'transform', 'x', 'xml:space', 'y'],\n  textPath: ['class', 'id', 'method', 'requiredFeatures', 'spacing', 'startOffset', 'style', 'systemLanguage', 'transform', 'xlink:href'],\n  title: [],\n  tspan: ['class', 'clip-path', 'clip-rule', 'dx', 'dy', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'font-family', 'font-size', 'font-style', 'font-weight', 'id', 'mask', 'opacity', 'requiredFeatures', 'rotate', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'systemLanguage', 'text-anchor', 'textLength', 'transform', 'x', 'xml:space', 'y'],\n  use: ['class', 'clip-path', 'clip-rule', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'height', 'id', 'mask', 'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'style', 'transform', 'width', 'x', 'xlink:href', 'y'],\n\n  // MathML Elements\n  annotation: ['encoding'],\n  'annotation-xml': ['encoding'],\n  maction: ['actiontype', 'other', 'selection'],\n  math: ['class', 'id', 'display', 'xmlns'],\n  menclose: ['notation'],\n  merror: [],\n  mfrac: ['linethickness'],\n  mi: ['mathvariant'],\n  mmultiscripts: [],\n  mn: [],\n  mo: ['fence', 'lspace', 'maxsize', 'minsize', 'rspace', 'stretchy'],\n  mover: [],\n  mpadded: ['lspace', 'width', 'height', 'depth', 'voffset'],\n  mphantom: [],\n  mprescripts: [],\n  mroot: [],\n  mrow: ['xlink:href', 'xlink:type', 'xmlns:xlink'],\n  mspace: ['depth', 'height', 'width'],\n  msqrt: [],\n  mstyle: ['displaystyle', 'mathbackground', 'mathcolor', 'mathvariant', 'scriptlevel'],\n  msub: [],\n  msubsup: [],\n  msup: [],\n  mtable: ['align', 'columnalign', 'columnlines', 'columnspacing', 'displaystyle', 'equalcolumns', 'equalrows', 'frame', 'rowalign', 'rowlines', 'rowspacing', 'width'],\n  mtd: ['columnalign', 'columnspan', 'rowalign', 'rowspan'],\n  mtext: [],\n  mtr: ['columnalign', 'rowalign'],\n  munder: [],\n  munderover: [],\n  none: [],\n  semantics: []\n};\n\n// Produce a Namespace-aware version of svgWhitelist\nconst svgWhiteListNS_ = {};\nObject.entries(svgWhiteList_).forEach(function ([elt, atts]) {\n  const attNS = {};\n  Object.entries(atts).forEach(function ([i, att]) {\n    if (att.includes(':')) {\n      const v = att.split(':');\n      attNS[v[1]] = NS[(v[0]).toUpperCase()];\n    } else {\n      attNS[att] = att === 'xmlns' ? NS.XMLNS : null;\n    }\n  });\n  svgWhiteListNS_[elt] = attNS;\n});\n\n/**\n* Sanitizes the input node and its children.\n* It only keeps what is allowed from our whitelist defined above.\n* @function module:sanitize.sanitizeSvg\n* @param {Text|Element} node - The DOM element to be checked (we'll also check its children) or text node to be cleaned up\n* @returns {undefined}\n*/\nexport const sanitizeSvg = function (node) {\n  // Cleanup text nodes\n  if (node.nodeType === 3) { // 3 === TEXT_NODE\n    // Trim whitespace\n    node.nodeValue = node.nodeValue.replace(/^\\s+|\\s+$/g, '');\n    // Remove if empty\n    if (!node.nodeValue.length) {\n      node.remove();\n    }\n  }\n\n  // We only care about element nodes.\n  // Automatically return for all non-element nodes, such as comments, etc.\n  if (node.nodeType !== 1) { // 1 == ELEMENT_NODE\n    return;\n  }\n\n  const doc = node.ownerDocument;\n  const parent = node.parentNode;\n  // can parent ever be null here?  I think the root node's parent is the document...\n  if (!doc || !parent) {\n    return;\n  }\n\n  const allowedAttrs = svgWhiteList_[node.nodeName];\n  const allowedAttrsNS = svgWhiteListNS_[node.nodeName];\n  // if this element is supported, sanitize it\n  if (typeof allowedAttrs !== 'undefined') {\n    const seAttrs = [];\n    let i = node.attributes.length;\n    while (i--) {\n      // if the attribute is not in our whitelist, then remove it\n      // could use jQuery's inArray(), but I don't know if that's any better\n      const attr = node.attributes.item(i);\n      const attrName = attr.nodeName;\n      const attrLocalName = attr.localName;\n      const attrNsURI = attr.namespaceURI;\n      // Check that an attribute with the correct localName in the correct namespace is on\n      // our whitelist or is a namespace declaration for one of our allowed namespaces\n      if (!({}.hasOwnProperty.call(allowedAttrsNS, attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) &&\n        !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {\n        // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.\n        // Bypassing the whitelist to allow se: prefixes.\n        // Is there a more appropriate way to do this?\n        if (attrName.startsWith('se:') || attrName.startsWith('data-')) {\n          seAttrs.push([attrName, attr.value]);\n        }\n        node.removeAttributeNS(attrNsURI, attrLocalName);\n      }\n\n      // Add spaces before negative signs where necessary\n      if (isGecko()) {\n        switch (attrName) {\n        case 'transform':\n        case 'gradientTransform':\n        case 'patternTransform': {\n          const val = attr.value.replace(/(\\d)-/g, '$1 -');\n          node.setAttribute(attrName, val);\n          break;\n        }\n        }\n      }\n\n      // For the style attribute, rewrite it in terms of XML presentational attributes\n      if (attrName === 'style') {\n        const props = attr.value.split(';');\n        let p = props.length;\n        while (p--) {\n          const [name, val] = props[p].split(':');\n          const styleAttrName = (name || '').trim();\n          const styleAttrVal = (val || '').trim();\n          // Now check that this attribute is supported\n          if (allowedAttrs.includes(styleAttrName)) {\n            node.setAttribute(styleAttrName, styleAttrVal);\n          }\n        }\n        node.removeAttribute('style');\n      }\n    }\n\n    Object.values(seAttrs).forEach(([att, val]) => {\n      node.setAttributeNS(NS.SE, att, val);\n    });\n\n    // for some elements that have a xlink:href, ensure the URI refers to a local element\n    // (but not for links)\n    const href = getHref(node);\n    if (href &&\n      ['filter', 'linearGradient', 'pattern',\n        'radialGradient', 'textPath', 'use'].includes(node.nodeName)) {\n      // TODO: we simply check if the first character is a #, is this bullet-proof?\n      if (href[0] !== '#') {\n        // remove the attribute (but keep the element)\n        setHref(node, '');\n        node.removeAttributeNS(NS.XLINK, 'href');\n      }\n    }\n\n    // Safari crashes on a <use> without a xlink:href, so we just remove the node here\n    if (node.nodeName === 'use' && !getHref(node)) {\n      node.remove();\n      return;\n    }\n    // if the element has attributes pointing to a non-local reference,\n    // need to remove the attribute\n    Object.values(['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'], function (attr) {\n      let val = node.getAttribute(attr);\n      if (val) {\n        val = getUrlFromAttr(val);\n        // simply check for first character being a '#'\n        if (val && val[0] !== '#') {\n          node.setAttribute(attr, '');\n          node.removeAttribute(attr);\n        }\n      }\n    });\n\n    // recurse to children\n    i = node.childNodes.length;\n    while (i--) { sanitizeSvg(node.childNodes.item(i)); }\n  // else (element not supported), remove it\n  } else {\n    // remove all children from this node and insert them before this node\n    // FIXME: in the case of animation elements this will hardly ever be correct\n    const children = [];\n    while (node.hasChildNodes()) {\n      children.push(parent.insertBefore(node.firstChild, node));\n    }\n\n    // remove this node from the document altogether\n    node.remove();\n\n    // call sanitizeSvg on each of those children\n    let i = children.length;\n    while (i--) { sanitizeSvg(children[i]); }\n  }\n};\n","/* globals jQuery */\n/**\n * Recalculate.\n * @module recalculate\n * @license MIT\n */\n\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport {NS} from './namespaces.js';\nimport {convertToNum} from './units.js';\nimport {isWebkit} from './browser.js';\nimport {getTransformList} from './svgtransformlist.js';\nimport {getRotationAngle, getHref, getBBox, getRefElem, isNullish} from './utilities.js';\nimport {BatchCommand, ChangeElementCommand} from './history.js';\nimport {remapElement} from './coords.js';\nimport {\n  isIdentity, matrixMultiply, transformPoint, transformListToTransform,\n  hasMatrixTransform\n} from './math.js';\n\nconst $ = jQueryPluginSVG(jQuery);\n\nlet context_;\n\n/**\n* @interface module:recalculate.EditorContext\n*/\n/**\n * @function module:recalculate.EditorContext#getSVGRoot\n * @returns {SVGSVGElement} The root DOM element\n */\n/**\n * @function module:recalculate.EditorContext#getStartTransform\n * @returns {string}\n*/\n/**\n * @function module:recalculate.EditorContext#setStartTransform\n * @param {string} transform\n * @returns {undefined}\n */\n\n/**\n* @function module:recalculate.init\n* @param {module:recalculate.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  context_ = editorContext;\n};\n\n/**\n* Updates a `<clipPath>`s values based on the given translation of an element.\n* @function module:recalculate.updateClipPath\n* @param {string} attr - The clip-path attribute value with the clipPath's ID\n* @param {Float} tx - The translation's x value\n* @param {Float} ty - The translation's y value\n* @returns {undefined}\n*/\nexport const updateClipPath = function (attr, tx, ty) {\n  const path = getRefElem(attr).firstChild;\n  const cpXform = getTransformList(path);\n  const newxlate = context_.getSVGRoot().createSVGTransform();\n  newxlate.setTranslate(tx, ty);\n\n  cpXform.appendItem(newxlate);\n\n  // Update clipPath's dimensions\n  recalculateDimensions(path);\n};\n\n/**\n* Decides the course of action based on the element's transform list.\n* @function module:recalculate.recalculateDimensions\n* @param {Element} selected - The DOM element to recalculate\n* @returns {Command} Undo command object with the resulting change\n*/\nexport const recalculateDimensions = function (selected) {\n  if (isNullish(selected)) { return null; }\n\n  // Firefox Issue - 1081\n  if (selected.nodeName === 'svg' && navigator.userAgent.includes('Firefox/20')) {\n    return null;\n  }\n\n  const svgroot = context_.getSVGRoot();\n  const tlist = getTransformList(selected);\n\n  // remove any unnecessary transforms\n  if (tlist && tlist.numberOfItems > 0) {\n    let k = tlist.numberOfItems;\n    const noi = k;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 0) {\n        tlist.removeItem(k);\n      // remove identity matrices\n      } else if (xform.type === 1) {\n        if (isIdentity(xform.matrix)) {\n          if (noi === 1) {\n            // Overcome Chrome bug (though only when noi is 1) with\n            //    `removeItem` preventing `removeAttribute` from\n            //    subsequently working\n            // See https://bugs.chromium.org/p/chromium/issues/detail?id=843901\n            selected.removeAttribute('transform');\n            return null;\n          }\n          tlist.removeItem(k);\n        }\n      // remove zero-degree rotations\n      } else if (xform.type === 4) {\n        if (xform.angle === 0) {\n          tlist.removeItem(k);\n        }\n      }\n    }\n    // End here if all it has is a rotation\n    if (tlist.numberOfItems === 1 &&\n        getRotationAngle(selected)) { return null; }\n  }\n\n  // if this element had no transforms, we are done\n  if (!tlist || tlist.numberOfItems === 0) {\n    // Chrome apparently had a bug that requires clearing the attribute first.\n    selected.setAttribute('transform', '');\n    // However, this still next line currently doesn't work at all in Chrome\n    selected.removeAttribute('transform');\n    // selected.transform.baseVal.clear(); // Didn't help for Chrome bug\n    return null;\n  }\n\n  // TODO: Make this work for more than 2\n  if (tlist) {\n    let mxs = [];\n    let k = tlist.numberOfItems;\n    while (k--) {\n      const xform = tlist.getItem(k);\n      if (xform.type === 1) {\n        mxs.push([xform.matrix, k]);\n      } else if (mxs.length) {\n        mxs = [];\n      }\n    }\n    if (mxs.length === 2) {\n      const mNew = svgroot.createSVGTransformFromMatrix(matrixMultiply(mxs[1][0], mxs[0][0]));\n      tlist.removeItem(mxs[0][1]);\n      tlist.removeItem(mxs[1][1]);\n      tlist.insertItemBefore(mNew, mxs[1][1]);\n    }\n\n    // combine matrix + translate\n    k = tlist.numberOfItems;\n    if (k >= 2 && tlist.getItem(k - 2).type === 1 && tlist.getItem(k - 1).type === 2) {\n      const mt = svgroot.createSVGTransform();\n\n      const m = matrixMultiply(\n        tlist.getItem(k - 2).matrix,\n        tlist.getItem(k - 1).matrix\n      );\n      mt.setMatrix(m);\n      tlist.removeItem(k - 2);\n      tlist.removeItem(k - 2);\n      tlist.appendItem(mt);\n    }\n  }\n\n  // If it still has a single [M] or [R][M], return null too (prevents BatchCommand from being returned).\n  switch (selected.tagName) {\n  // Ignore these elements, as they can absorb the [M]\n  case 'line':\n  case 'polyline':\n  case 'polygon':\n  case 'path':\n    break;\n  default:\n    if ((tlist.numberOfItems === 1 && tlist.getItem(0).type === 1) ||\n        (tlist.numberOfItems === 2 && tlist.getItem(0).type === 1 && tlist.getItem(0).type === 4)) {\n      return null;\n    }\n  }\n\n  // Grouped SVG element\n  const gsvg = $(selected).data('gsvg');\n\n  // we know we have some transforms, so set up return variable\n  const batchCmd = new BatchCommand('Transform');\n\n  // store initial values that will be affected by reducing the transform list\n  let changes = {};\n  let initial = null;\n  let attrs = [];\n  switch (selected.tagName) {\n  case 'line':\n    attrs = ['x1', 'y1', 'x2', 'y2'];\n    break;\n  case 'circle':\n    attrs = ['cx', 'cy', 'r'];\n    break;\n  case 'ellipse':\n    attrs = ['cx', 'cy', 'rx', 'ry'];\n    break;\n  case 'foreignObject':\n  case 'rect':\n  case 'image':\n    attrs = ['width', 'height', 'x', 'y'];\n    break;\n  case 'use':\n  case 'text':\n  case 'tspan':\n    attrs = ['x', 'y'];\n    break;\n  case 'polygon':\n  case 'polyline': {\n    initial = {};\n    initial.points = selected.getAttribute('points');\n    const list = selected.points;\n    const len = list.numberOfItems;\n    changes.points = new Array(len);\n    for (let i = 0; i < len; ++i) {\n      const pt = list.getItem(i);\n      changes.points[i] = {x: pt.x, y: pt.y};\n    }\n    break;\n  } case 'path':\n    initial = {};\n    initial.d = selected.getAttribute('d');\n    changes.d = selected.getAttribute('d');\n    break;\n  } // switch on element type to get initial values\n\n  if (attrs.length) {\n    changes = $(selected).attr(attrs);\n    $.each(changes, function (attr, val) {\n      changes[attr] = convertToNum(attr, val);\n    });\n  } else if (gsvg) {\n    // GSVG exception\n    changes = {\n      x: $(gsvg).attr('x') || 0,\n      y: $(gsvg).attr('y') || 0\n    };\n  }\n\n  // if we haven't created an initial array in polygon/polyline/path, then\n  // make a copy of initial values and include the transform\n  if (isNullish(initial)) {\n    initial = $.extend(true, {}, changes);\n    $.each(initial, function (attr, val) {\n      initial[attr] = convertToNum(attr, val);\n    });\n  }\n  // save the start transform value too\n  initial.transform = context_.getStartTransform() || '';\n\n  let oldcenter, newcenter;\n\n  // if it's a regular group, we have special processing to flatten transforms\n  if ((selected.tagName === 'g' && !gsvg) || selected.tagName === 'a') {\n    const box = getBBox(selected);\n\n    oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n    newcenter = transformPoint(\n      box.x + box.width / 2,\n      box.y + box.height / 2,\n      transformListToTransform(tlist).matrix\n    );\n    // let m = svgroot.createSVGMatrix();\n\n    // temporarily strip off the rotate and save the old center\n    const gangle = getRotationAngle(selected);\n    if (gangle) {\n      const a = gangle * Math.PI / 180;\n      let s;\n      if (Math.abs(a) > (1.0e-10)) {\n        s = Math.sin(a) / (1 - Math.cos(a));\n      } else {\n        // FIXME: This blows up if the angle is exactly 0!\n        s = 2 / a;\n      }\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n    const N = tlist.numberOfItems;\n    let tx = 0, ty = 0, operation = 0;\n\n    let firstM;\n    if (N) {\n      firstM = tlist.getItem(0).matrix;\n    }\n\n    let oldStartTransform;\n    // first, if it was a scale then the second-last transform will be it\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      operation = 3; // scale\n\n      // if the children are unrotated, pass the scale down directly\n      // otherwise pass the equivalent matrix() down directly\n      const tm = tlist.getItem(N - 3).matrix,\n        sm = tlist.getItem(N - 2).matrix,\n        tmn = tlist.getItem(N - 1).matrix;\n\n      const children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        tx = 0;\n        ty = 0;\n        if (child.nodeType === 1) {\n          const childTlist = getTransformList(child);\n\n          // some children might not have a transform (<metadata>, <defs>, etc)\n          if (!childTlist) { continue; }\n\n          const m = transformListToTransform(childTlist).matrix;\n\n          // Convert a matrix to a scale if applicable\n          // if (hasMatrixTransform(childTlist) && childTlist.numberOfItems == 1) {\n          //   if (m.b==0 && m.c==0 && m.e==0 && m.f==0) {\n          //     childTlist.removeItem(0);\n          //     const translateOrigin = svgroot.createSVGTransform(),\n          //       scale = svgroot.createSVGTransform(),\n          //       translateBack = svgroot.createSVGTransform();\n          //     translateOrigin.setTranslate(0, 0);\n          //     scale.setScale(m.a, m.d);\n          //     translateBack.setTranslate(0, 0);\n          //     childTlist.appendItem(translateBack);\n          //     childTlist.appendItem(scale);\n          //     childTlist.appendItem(translateOrigin);\n          //   }\n          // }\n\n          const angle = getRotationAngle(child);\n          oldStartTransform = context_.getStartTransform();\n          const childxforms = [];\n          context_.setStartTransform(child.getAttribute('transform'));\n          if (angle || hasMatrixTransform(childTlist)) {\n            const e2t = svgroot.createSVGTransform();\n            e2t.setMatrix(matrixMultiply(tm, sm, tmn, m));\n            childTlist.clear();\n            childTlist.appendItem(e2t);\n            childxforms.push(e2t);\n          // if not rotated or skewed, push the [T][S][-T] down to the child\n          } else {\n            // update the transform list with translate,scale,translate\n\n            // slide the [T][S][-T] from the front to the back\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n\n            // (only bringing [-T] to the right of [M])\n            // [T][S][-T][M] = [T][S][M][-T2]\n            // [-T2] = [M_inv][-T][M]\n            const t2n = matrixMultiply(m.inverse(), tmn, m);\n            // [T2] is always negative translation of [-T2]\n            const t2 = svgroot.createSVGMatrix();\n            t2.e = -t2n.e;\n            t2.f = -t2n.f;\n\n            // [T][S][-T][M] = [M][T2][S2][-T2]\n            // [S2] = [T2_inv][M_inv][T][S][-T][M][-T2_inv]\n            const s2 = matrixMultiply(t2.inverse(), m.inverse(), tm, sm, tmn, m, t2n.inverse());\n\n            const translateOrigin = svgroot.createSVGTransform(),\n              scale = svgroot.createSVGTransform(),\n              translateBack = svgroot.createSVGTransform();\n            translateOrigin.setTranslate(t2n.e, t2n.f);\n            scale.setScale(s2.a, s2.d);\n            translateBack.setTranslate(t2.e, t2.f);\n            childTlist.appendItem(translateBack);\n            childTlist.appendItem(scale);\n            childTlist.appendItem(translateOrigin);\n            childxforms.push(translateBack);\n            childxforms.push(scale);\n            childxforms.push(translateOrigin);\n            // logMatrix(translateBack.matrix);\n            // logMatrix(scale.matrix);\n          } // not rotated\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          // TODO: If any <use> have this group as a parent and are\n          // referencing this child, then we need to impose a reverse\n          // scale on it so that when it won't get double-translated\n          // const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n          // const href = '#' + child.id;\n          // let u = uses.length;\n          // while (u--) {\n          //   const useElem = uses.item(u);\n          //   if (href == getHref(useElem)) {\n          //     const usexlate = svgroot.createSVGTransform();\n          //     usexlate.setTranslate(-tx,-ty);\n          //     getTransformList(useElem).insertItemBefore(usexlate,0);\n          //     batchCmd.addSubCommand( recalculateDimensions(useElem) );\n          //   }\n          // }\n          context_.setStartTransform(oldStartTransform);\n        } // element\n      } // for each child\n      // Remove these transforms from group\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    } else if (N >= 3 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      const m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n    // next, check if the first transform was a translate\n    // if we had [ T1 ] [ M ] we want to transform this into [ M ] [ T2 ]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ]\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const T_M = transformListToTransform(tlist).matrix;\n      tlist.removeItem(0);\n      const mInv = transformListToTransform(tlist).matrix.inverse();\n      const M2 = matrixMultiply(mInv, T_M);\n\n      tx = M2.e;\n      ty = M2.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n\n        const clipPathsDone = [];\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            // Check if child has clip-path\n            if (child.getAttribute('clip-path')) {\n              // tx, ty\n              const attr = child.getAttribute('clip-path');\n              if (!clipPathsDone.includes(attr)) {\n                updateClipPath(attr, tx, ty);\n                clipPathsDone.push(attr);\n              }\n            }\n\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n\n            const childTlist = getTransformList(child);\n            // some children might not have a transform (<metadata>, <defs>, etc)\n            if (childTlist) {\n              const newxlate = svgroot.createSVGTransform();\n              newxlate.setTranslate(tx, ty);\n              if (childTlist.numberOfItems) {\n                childTlist.insertItemBefore(newxlate, 0);\n              } else {\n                childTlist.appendItem(newxlate);\n              }\n              batchCmd.addSubCommand(recalculateDimensions(child));\n              // If any <use> have this group as a parent and are\n              // referencing this child, then impose a reverse translate on it\n              // so that when it won't get double-translated\n              const uses = selected.getElementsByTagNameNS(NS.SVG, 'use');\n              const href = '#' + child.id;\n              let u = uses.length;\n              while (u--) {\n                const useElem = uses.item(u);\n                if (href === getHref(useElem)) {\n                  const usexlate = svgroot.createSVGTransform();\n                  usexlate.setTranslate(-tx, -ty);\n                  getTransformList(useElem).insertItemBefore(usexlate, 0);\n                  batchCmd.addSubCommand(recalculateDimensions(useElem));\n                }\n              }\n              context_.setStartTransform(oldStartTransform);\n            }\n          }\n        }\n        context_.setStartTransform(oldStartTransform);\n      }\n    // else, a matrix imposition from a parent group\n    // keep pushing it down to the children\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !gangle) {\n      operation = 1;\n      const m = tlist.getItem(0).matrix,\n        children = selected.childNodes;\n      let c = children.length;\n      while (c--) {\n        const child = children.item(c);\n        if (child.nodeType === 1) {\n          oldStartTransform = context_.getStartTransform();\n          context_.setStartTransform(child.getAttribute('transform'));\n          const childTlist = getTransformList(child);\n\n          if (!childTlist) { continue; }\n\n          const em = matrixMultiply(m, transformListToTransform(childTlist).matrix);\n          const e2m = svgroot.createSVGTransform();\n          e2m.setMatrix(em);\n          childTlist.clear();\n          childTlist.appendItem(e2m, 0);\n\n          batchCmd.addSubCommand(recalculateDimensions(child));\n          context_.setStartTransform(oldStartTransform);\n\n          // Convert stroke\n          // TODO: Find out if this should actually happen somewhere else\n          const sw = child.getAttribute('stroke-width');\n          if (child.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n            const avg = (Math.abs(em.a) + Math.abs(em.d)) / 2;\n            child.setAttribute('stroke-width', sw * avg);\n          }\n        }\n      }\n      tlist.clear();\n    // else it was just a rotate\n    } else {\n      if (gangle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (gangle) {\n        newcenter = {\n          x: oldcenter.x + firstM.e,\n          y: oldcenter.y + firstM.f\n        };\n\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(gangle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n    // if it was a resize\n    } else if (operation === 3) {\n      const m = transformListToTransform(tlist).matrix;\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(gangle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(gangle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse(),\n        mInv = m.inverse(),\n        extrat = matrixMultiply(mInv, rnewInv, rold, m);\n\n      tx = extrat.e;\n      ty = extrat.f;\n\n      if (tx !== 0 || ty !== 0) {\n        // now push this transform down to the children\n        // we pass the translates down to the individual children\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.nodeType === 1) {\n            oldStartTransform = context_.getStartTransform();\n            context_.setStartTransform(child.getAttribute('transform'));\n            const childTlist = getTransformList(child);\n            const newxlate = svgroot.createSVGTransform();\n            newxlate.setTranslate(tx, ty);\n            if (childTlist.numberOfItems) {\n              childTlist.insertItemBefore(newxlate, 0);\n            } else {\n              childTlist.appendItem(newxlate);\n            }\n\n            batchCmd.addSubCommand(recalculateDimensions(child));\n            context_.setStartTransform(oldStartTransform);\n          }\n        }\n      }\n\n      if (gangle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  // else, it's a non-group\n  } else {\n    // FIXME: box might be null for some elements (<metadata> etc), need to handle this\n    const box = getBBox(selected);\n\n    // Paths (and possbly other shapes) will have no BBox while still in <defs>,\n    // but we still may need to recalculate them (see issue 595).\n    // TODO: Figure out how to get BBox from these elements in case they\n    // have a rotation transform\n\n    if (!box && selected.tagName !== 'path') return null;\n\n    let m; // = svgroot.createSVGMatrix();\n    // temporarily strip off the rotate and save the old center\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      oldcenter = {x: box.x + box.width / 2, y: box.y + box.height / 2};\n      newcenter = transformPoint(\n        box.x + box.width / 2,\n        box.y + box.height / 2,\n        transformListToTransform(tlist).matrix\n      );\n\n      const a = angle * Math.PI / 180;\n      const s = (Math.abs(a) > (1.0e-10))\n        ? Math.sin(a) / (1 - Math.cos(a))\n        // FIXME: This blows up if the angle is exactly 0!\n        : 2 / a;\n\n      for (let i = 0; i < tlist.numberOfItems; ++i) {\n        const xform = tlist.getItem(i);\n        if (xform.type === 4) {\n          // extract old center through mystical arts\n          const rm = xform.matrix;\n          oldcenter.y = (s * rm.e + rm.f) / 2;\n          oldcenter.x = (rm.e - s * rm.f) / 2;\n          tlist.removeItem(i);\n          break;\n        }\n      }\n    }\n\n    // 2 = translate, 3 = scale, 4 = rotate, 1 = matrix imposition\n    let operation = 0;\n    const N = tlist.numberOfItems;\n\n    // Check if it has a gradient with userSpaceOnUse, in which case\n    // adjust it by recalculating the matrix transform.\n    // TODO: Make this work in Webkit using transformlist.SVGTransformList\n    if (!isWebkit()) {\n      const fill = selected.getAttribute('fill');\n      if (fill && fill.startsWith('url(')) {\n        const paint = getRefElem(fill);\n        let type = 'pattern';\n        if (paint.tagName !== type) type = 'gradient';\n        const attrVal = paint.getAttribute(type + 'Units');\n        if (attrVal === 'userSpaceOnUse') {\n          // Update the userSpaceOnUse element\n          m = transformListToTransform(tlist).matrix;\n          const gtlist = getTransformList(paint);\n          const gmatrix = transformListToTransform(gtlist).matrix;\n          m = matrixMultiply(m, gmatrix);\n          const mStr = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';\n          paint.setAttribute(type + 'Transform', mStr);\n        }\n      }\n    }\n\n    // first, if it was a scale of a non-skewed element, then the second-last\n    // transform will be the [S]\n    // if we had [M][T][S][T] we want to extract the matrix equivalent of\n    // [T][S][T] and push it down to the element\n    if (N >= 3 && tlist.getItem(N - 2).type === 3 &&\n      tlist.getItem(N - 3).type === 2 && tlist.getItem(N - 1).type === 2) {\n      // Removed this so a <use> with a given [T][S][T] would convert to a matrix.\n      // Is that bad?\n      //  && selected.nodeName != 'use'\n      operation = 3; // scale\n      m = transformListToTransform(tlist, N - 3, N - 1).matrix;\n      tlist.removeItem(N - 1);\n      tlist.removeItem(N - 2);\n      tlist.removeItem(N - 3);\n    // if we had [T][S][-T][M], then this was a skewed element being resized\n    // Thus, we simply combine it all into one matrix\n    } else if (N === 4 && tlist.getItem(N - 1).type === 1) {\n      operation = 3; // scale\n      m = transformListToTransform(tlist).matrix;\n      const e2t = svgroot.createSVGTransform();\n      e2t.setMatrix(m);\n      tlist.clear();\n      tlist.appendItem(e2t);\n      // reset the matrix so that the element is not re-mapped\n      m = svgroot.createSVGMatrix();\n    // if we had [R][T][S][-T][M], then this was a rotated matrix-element\n    // if we had [T1][M] we want to transform this into [M][T2]\n    // therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ] and we can push [T2]\n    // down to the element\n    } else if ((N === 1 || (N > 1 && tlist.getItem(1).type !== 3)) &&\n      tlist.getItem(0).type === 2) {\n      operation = 2; // translate\n      const oldxlate = tlist.getItem(0).matrix,\n        meq = transformListToTransform(tlist, 1).matrix,\n        meqInv = meq.inverse();\n      m = matrixMultiply(meqInv, oldxlate, meq);\n      tlist.removeItem(0);\n    // else if this child now has a matrix imposition (from a parent group)\n    // we might be able to simplify\n    } else if (N === 1 && tlist.getItem(0).type === 1 && !angle) {\n      // Remap all point-based elements\n      m = transformListToTransform(tlist).matrix;\n      switch (selected.tagName) {\n      case 'line':\n        changes = $(selected).attr(['x1', 'y1', 'x2', 'y2']);\n        // Fallthrough\n      case 'polyline':\n      case 'polygon':\n        changes.points = selected.getAttribute('points');\n        if (changes.points) {\n          const list = selected.points;\n          const len = list.numberOfItems;\n          changes.points = new Array(len);\n          for (let i = 0; i < len; ++i) {\n            const pt = list.getItem(i);\n            changes.points[i] = {x: pt.x, y: pt.y};\n          }\n        }\n        // Fallthrough\n      case 'path':\n        changes.d = selected.getAttribute('d');\n        operation = 1;\n        tlist.clear();\n        break;\n      default:\n        break;\n      }\n    // if it was a rotation, put the rotate back and return without a command\n    // (this function has zero work to do for a rotate())\n    } else {\n      // operation = 4; // rotation\n      if (angle) {\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      if (tlist.numberOfItems === 0) {\n        selected.removeAttribute('transform');\n      }\n      return null;\n    }\n\n    // if it was a translate or resize, we need to remap the element and absorb the xform\n    if (operation === 1 || operation === 2 || operation === 3) {\n      remapElement(selected, changes, m);\n    } // if we are remapping\n\n    // if it was a translate, put back the rotate at the new center\n    if (operation === 2) {\n      if (angle) {\n        if (!hasMatrixTransform(tlist)) {\n          newcenter = {\n            x: oldcenter.x + m.e,\n            y: oldcenter.y + m.f\n          };\n        }\n        const newRot = svgroot.createSVGTransform();\n        newRot.setRotate(angle, newcenter.x, newcenter.y);\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(newRot, 0);\n        } else {\n          tlist.appendItem(newRot);\n        }\n      }\n      // We have special processing for tspans:  Tspans are not transformable\n      // but they can have x,y coordinates (sigh).  Thus, if this was a translate,\n      // on a text element, also translate any tspan children.\n      if (selected.tagName === 'text') {\n        const children = selected.childNodes;\n        let c = children.length;\n        while (c--) {\n          const child = children.item(c);\n          if (child.tagName === 'tspan') {\n            const tspanChanges = {\n              x: $(child).attr('x') || 0,\n              y: $(child).attr('y') || 0\n            };\n            remapElement(child, tspanChanges, m);\n          }\n        }\n      }\n    // [Rold][M][T][S][-T] became [Rold][M]\n    // we want it to be [Rnew][M][Tr] where Tr is the\n    // translation required to re-center it\n    // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]\n    } else if (operation === 3 && angle) {\n      const {matrix} = transformListToTransform(tlist);\n      const roldt = svgroot.createSVGTransform();\n      roldt.setRotate(angle, oldcenter.x, oldcenter.y);\n      const rold = roldt.matrix;\n      const rnew = svgroot.createSVGTransform();\n      rnew.setRotate(angle, newcenter.x, newcenter.y);\n      const rnewInv = rnew.matrix.inverse();\n      const mInv = matrix.inverse();\n      const extrat = matrixMultiply(mInv, rnewInv, rold, matrix);\n\n      remapElement(selected, changes, extrat);\n      if (angle) {\n        if (tlist.numberOfItems) {\n          tlist.insertItemBefore(rnew, 0);\n        } else {\n          tlist.appendItem(rnew);\n        }\n      }\n    }\n  } // a non-group\n\n  // if the transform list has been emptied, remove it\n  if (tlist.numberOfItems === 0) {\n    selected.removeAttribute('transform');\n  }\n\n  batchCmd.addSubCommand(new ChangeElementCommand(selected, initial));\n\n  return batchCmd;\n};\n","/* globals jQuery */\n/**\n * DOM element selection box tools\n * @module select\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Jeff Schiller\n */\n\nimport {isTouch, isWebkit} from './browser.js'; // , isOpera\nimport {getRotationAngle, getBBox, getStrokedBBox, isNullish} from './utilities.js';\nimport {transformListToTransform, transformBox, transformPoint} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\nlet svgFactory_;\nlet config_;\nlet selectorManager_; // A Singleton\nconst gripRadius = isTouch() ? 10 : 4;\n\n/**\n* Private class for DOM element selection boxes.\n*/\nexport class Selector {\n  /**\n  * @param {Integer} id - Internally identify the selector\n  * @param {Element} elem - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for initialization (prevents duplicate `getBBox` call).\n  */\n  constructor (id, elem, bbox) {\n    // this is the selector's unique number\n    this.id = id;\n\n    // this holds a reference to the element for which this selector is being used\n    this.selectedElement = elem;\n\n    // this is a flag used internally to track whether the selector is being used or not\n    this.locked = true;\n\n    // this holds a reference to the <g> element that holds all visual elements of the selector\n    this.selectorGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: ('selectorGroup' + this.id)}\n    });\n\n    // this holds a reference to the path rect\n    this.selectorRect = this.selectorGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'path',\n        attr: {\n          id: ('selectedBox' + this.id),\n          fill: 'none',\n          stroke: '#22C',\n          'stroke-width': '1',\n          'stroke-dasharray': '5,5',\n          // need to specify this so that the rect is not selectable\n          style: 'pointer-events:none'\n        }\n      })\n    );\n\n    // this holds a reference to the grip coordinates for this selector\n    this.gripCoords = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.reset(this.selectedElement, bbox);\n  }\n\n  /**\n  * Used to reset the id and element that the selector is attached to.\n  * @param {Element} e - DOM element associated with this selector\n  * @param {module:utilities.BBoxObject} bbox - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  reset (e, bbox) {\n    this.locked = true;\n    this.selectedElement = e;\n    this.resize(bbox);\n    this.selectorGroup.setAttribute('display', 'inline');\n  }\n\n  /**\n  * Show the resize grips of this selector.\n  * @param {boolean} show - Indicates whether grips should be shown or not\n  * @returns {undefined}\n  */\n  showGrips (show) {\n    const bShow = show ? 'inline' : 'none';\n    selectorManager_.selectorGripsGroup.setAttribute('display', bShow);\n    const elem = this.selectedElement;\n    this.hasGrips = show;\n    if (elem && show) {\n      this.selectorGroup.append(selectorManager_.selectorGripsGroup);\n      Selector.updateGripCursors(getRotationAngle(elem));\n    }\n  }\n\n  /**\n  * Updates the selector to match the element's size.\n  * @param {module:utilities.BBoxObject} [bbox] - BBox to use for resize (prevents duplicate getBBox call).\n  * @returns {undefined}\n  */\n  resize (bbox) {\n    const selectedBox = this.selectorRect,\n      mgr = selectorManager_,\n      selectedGrips = mgr.selectorGrips,\n      selected = this.selectedElement,\n      sw = selected.getAttribute('stroke-width'),\n      currentZoom = svgFactory_.getCurrentZoom();\n    let offset = 1 / currentZoom;\n    if (selected.getAttribute('stroke') !== 'none' && !isNaN(sw)) {\n      offset += (sw / 2);\n    }\n\n    const {tagName} = selected;\n    if (tagName === 'text') {\n      offset += 2 / currentZoom;\n    }\n\n    // loop and transform our bounding box until we reach our first rotation\n    const tlist = getTransformList(selected);\n    const m = transformListToTransform(tlist).matrix;\n\n    // This should probably be handled somewhere else, but for now\n    // it keeps the selection box correctly positioned when zoomed\n    m.e *= currentZoom;\n    m.f *= currentZoom;\n\n    if (!bbox) {\n      bbox = getBBox(selected);\n    }\n    // TODO: getBBox (previous line) already knows to call getStrokedBBox when tagName === 'g'. Remove this?\n    // TODO: getBBox doesn't exclude 'gsvg' and calls getStrokedBBox for any 'g'. Should getBBox be updated?\n    if (tagName === 'g' && !$.data(selected, 'gsvg')) {\n      // The bbox for a group does not include stroke vals, so we\n      // get the bbox based on its children.\n      const strokedBbox = getStrokedBBox([selected.childNodes]);\n      if (strokedBbox) {\n        bbox = strokedBbox;\n      }\n    }\n\n    // apply the transforms\n    const l = bbox.x, t = bbox.y, w = bbox.width, h = bbox.height;\n    // bbox = {x: l, y: t, width: w, height: h}; // Not in use\n\n    // we need to handle temporary transforms too\n    // if skewed, get its transformed box, then find its axis-aligned bbox\n\n    // *\n    offset *= currentZoom;\n\n    const nbox = transformBox(l * currentZoom, t * currentZoom, w * currentZoom, h * currentZoom, m),\n      {aabox} = nbox;\n    let nbax = aabox.x - offset,\n      nbay = aabox.y - offset,\n      nbaw = aabox.width + (offset * 2),\n      nbah = aabox.height + (offset * 2);\n\n    // now if the shape is rotated, un-rotate it\n    const cx = nbax + nbaw / 2,\n      cy = nbay + nbah / 2;\n\n    const angle = getRotationAngle(selected);\n    if (angle) {\n      const rot = svgFactory_.svgRoot().createSVGTransform();\n      rot.setRotate(-angle, cx, cy);\n      const rotm = rot.matrix;\n      nbox.tl = transformPoint(nbox.tl.x, nbox.tl.y, rotm);\n      nbox.tr = transformPoint(nbox.tr.x, nbox.tr.y, rotm);\n      nbox.bl = transformPoint(nbox.bl.x, nbox.bl.y, rotm);\n      nbox.br = transformPoint(nbox.br.x, nbox.br.y, rotm);\n\n      // calculate the axis-aligned bbox\n      const {tl} = nbox;\n      let minx = tl.x,\n        miny = tl.y,\n        maxx = tl.x,\n        maxy = tl.y;\n\n      const {min, max} = Math;\n\n      minx = min(minx, min(nbox.tr.x, min(nbox.bl.x, nbox.br.x))) - offset;\n      miny = min(miny, min(nbox.tr.y, min(nbox.bl.y, nbox.br.y))) - offset;\n      maxx = max(maxx, max(nbox.tr.x, max(nbox.bl.x, nbox.br.x))) + offset;\n      maxy = max(maxy, max(nbox.tr.y, max(nbox.bl.y, nbox.br.y))) + offset;\n\n      nbax = minx;\n      nbay = miny;\n      nbaw = (maxx - minx);\n      nbah = (maxy - miny);\n    }\n\n    const dstr = 'M' + nbax + ',' + nbay +\n      ' L' + (nbax + nbaw) + ',' + nbay +\n      ' ' + (nbax + nbaw) + ',' + (nbay + nbah) +\n      ' ' + nbax + ',' + (nbay + nbah) + 'z';\n    selectedBox.setAttribute('d', dstr);\n\n    const xform = angle ? 'rotate(' + [angle, cx, cy].join(',') + ')' : '';\n    this.selectorGroup.setAttribute('transform', xform);\n\n    // TODO(codedread): Is this needed?\n    //  if (selected === selectedElements[0]) {\n    this.gripCoords = {\n      nw: [nbax, nbay],\n      ne: [nbax + nbaw, nbay],\n      sw: [nbax, nbay + nbah],\n      se: [nbax + nbaw, nbay + nbah],\n      n: [nbax + (nbaw) / 2, nbay],\n      w: [nbax, nbay + (nbah) / 2],\n      e: [nbax + nbaw, nbay + (nbah) / 2],\n      s: [nbax + (nbaw) / 2, nbay + nbah]\n    };\n    Object.entries(this.gripCoords).forEach(([dir, coords]) => {\n      selectedGrips[dir].setAttribute('cx', coords[0]);\n      selectedGrips[dir].setAttribute('cy', coords[1]);\n    });\n\n    // we want to go 20 pixels in the negative transformed y direction, ignoring scale\n    mgr.rotateGripConnector.setAttribute('x1', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y1', nbay);\n    mgr.rotateGripConnector.setAttribute('x2', nbax + (nbaw) / 2);\n    mgr.rotateGripConnector.setAttribute('y2', nbay - (gripRadius * 5));\n\n    mgr.rotateGrip.setAttribute('cx', nbax + (nbaw) / 2);\n    mgr.rotateGrip.setAttribute('cy', nbay - (gripRadius * 5));\n    // }\n  }\n}\n/**\n* Updates cursors for corner grips on rotation so arrows point the right way.\n* @param {Float} angle - Current rotation angle in degrees\n* @returns {undefined}\n*/\nSelector.updateGripCursors = function (angle) {\n  const dirArr = Object.keys(selectorManager_.selectorGrips);\n  let steps = Math.round(angle / 45);\n  if (steps < 0) { steps += 8; }\n  while (steps > 0) {\n    dirArr.push(dirArr.shift());\n    steps--;\n  }\n  Object.values(selectorManager_.selectorGrips).forEach((gripElement, i) => {\n    gripElement.setAttribute('style', ('cursor:' + dirArr[i] + '-resize'));\n  });\n};\n\n/**\n* Manage all selector objects (selection boxes).\n*/\nexport class SelectorManager {\n  constructor () {\n    // this will hold the <g> element that contains all selector rects/grips\n    this.selectorParentGroup = null;\n\n    // this is a special rect that is used for multi-select\n    this.rubberBandBox = null;\n\n    // this will hold objects of type Selector (see above)\n    this.selectors = [];\n\n    // this holds a map of SVG elements to their Selector object\n    this.selectorMap = {};\n\n    // this holds a reference to the grip elements\n    this.selectorGrips = {\n      nw: null,\n      n: null,\n      ne: null,\n      e: null,\n      se: null,\n      s: null,\n      sw: null,\n      w: null\n    };\n\n    this.selectorGripsGroup = null;\n    this.rotateGripConnector = null;\n    this.rotateGrip = null;\n\n    this.initGroup();\n  }\n\n  /**\n  * Resets the parent selector group element.\n  * @returns {undefined}\n  */\n  initGroup () {\n    // remove old selector parent group if it existed\n    if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {\n      this.selectorParentGroup.remove();\n    }\n\n    // create parent selector group and add it to svgroot\n    this.selectorParentGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {id: 'selectorParentGroup'}\n    });\n    this.selectorGripsGroup = svgFactory_.createSVGElement({\n      element: 'g',\n      attr: {display: 'none'}\n    });\n    this.selectorParentGroup.append(this.selectorGripsGroup);\n    svgFactory_.svgRoot().append(this.selectorParentGroup);\n\n    this.selectorMap = {};\n    this.selectors = [];\n    this.rubberBandBox = null;\n\n    // add the corner grips\n    Object.keys(this.selectorGrips).forEach((dir) => {\n      const grip = svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: ('selectorGrip_resize_' + dir),\n          fill: '#22C',\n          r: gripRadius,\n          style: ('cursor:' + dir + '-resize'),\n          // This expands the mouse-able area of the grips making them\n          // easier to grab with the mouse.\n          // This works in Opera and WebKit, but does not work in Firefox\n          // see https://bugzilla.mozilla.org/show_bug.cgi?id=500174\n          'stroke-width': 2,\n          'pointer-events': 'all'\n        }\n      });\n\n      $.data(grip, 'dir', dir);\n      $.data(grip, 'type', 'resize');\n      this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);\n    });\n\n    // add rotator elems\n    this.rotateGripConnector = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'line',\n        attr: {\n          id: ('selectorGrip_rotateconnector'),\n          stroke: '#22C',\n          'stroke-width': '1'\n        }\n      })\n    );\n\n    this.rotateGrip = this.selectorGripsGroup.appendChild(\n      svgFactory_.createSVGElement({\n        element: 'circle',\n        attr: {\n          id: 'selectorGrip_rotate',\n          fill: 'lime',\n          r: gripRadius,\n          stroke: '#22C',\n          'stroke-width': 2,\n          style: 'cursor:url(' + config_.imgPath + 'rotate.png) 12 12, auto;'\n        }\n      })\n    );\n    $.data(this.rotateGrip, 'type', 'rotate');\n\n    if ($('#canvasBackground').length) { return; }\n\n    const [width, height] = config_.dimensions;\n    const canvasbg = svgFactory_.createSVGElement({\n      element: 'svg',\n      attr: {\n        id: 'canvasBackground',\n        width,\n        height,\n        x: 0,\n        y: 0,\n        overflow: (isWebkit() ? 'none' : 'visible'), // Chrome 7 has a problem with this when zooming out\n        style: 'pointer-events:none'\n      }\n    });\n\n    const rect = svgFactory_.createSVGElement({\n      element: 'rect',\n      attr: {\n        width: '100%',\n        height: '100%',\n        x: 0,\n        y: 0,\n        'stroke-width': 1,\n        stroke: '#000',\n        fill: '#FFF',\n        style: 'pointer-events:none'\n      }\n    });\n\n    // Both Firefox and WebKit are too slow with this filter region (especially at higher\n    // zoom levels) and Opera has at least one bug\n    // if (!isOpera()) rect.setAttribute('filter', 'url(#canvashadow)');\n    canvasbg.append(rect);\n    svgFactory_.svgRoot().insertBefore(canvasbg, svgFactory_.svgContent());\n    // Ok to replace above with `svgFactory_.svgContent().before(canvasbg);`?\n  }\n\n  /**\n  *\n  * @param {Element} elem - DOM element to get the selector for\n  * @param {module:utilities.BBoxObject} [bbox] - Optional bbox to use for reset (prevents duplicate getBBox call).\n  * @returns {Selector} The selector based on the given element\n  */\n  requestSelector (elem, bbox) {\n    if (isNullish(elem)) { return null; }\n\n    const N = this.selectors.length;\n    // If we've already acquired one for this element, return it.\n    if (typeof this.selectorMap[elem.id] === 'object') {\n      this.selectorMap[elem.id].locked = true;\n      return this.selectorMap[elem.id];\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && !this.selectors[i].locked) {\n        this.selectors[i].locked = true;\n        this.selectors[i].reset(elem, bbox);\n        this.selectorMap[elem.id] = this.selectors[i];\n        return this.selectors[i];\n      }\n    }\n    // if we reached here, no available selectors were found, we create one\n    this.selectors[N] = new Selector(N, elem, bbox);\n    this.selectorParentGroup.append(this.selectors[N].selectorGroup);\n    this.selectorMap[elem.id] = this.selectors[N];\n    return this.selectors[N];\n  }\n\n  /**\n  * Removes the selector of the given element (hides selection box).\n  *\n  * @param {Element} elem - DOM element to remove the selector for\n  * @returns {undefined}\n  */\n  releaseSelector (elem) {\n    if (isNullish(elem)) { return; }\n    const N = this.selectors.length,\n      sel = this.selectorMap[elem.id];\n    if (!sel.locked) {\n      // TODO(codedread): Ensure this exists in this module.\n      console.log('WARNING! selector was released but was already unlocked'); // eslint-disable-line no-console\n    }\n    for (let i = 0; i < N; ++i) {\n      if (this.selectors[i] && this.selectors[i] === sel) {\n        delete this.selectorMap[elem.id];\n        sel.locked = false;\n        sel.selectedElement = null;\n        sel.showGrips(false);\n\n        // remove from DOM and store reference in JS but only if it exists in the DOM\n        try {\n          sel.selectorGroup.setAttribute('display', 'none');\n        } catch (e) {}\n\n        break;\n      }\n    }\n  }\n\n  /**\n  * @returns {SVGRectElement} The rubberBandBox DOM element. This is the rectangle drawn by\n  * the user for selecting/zooming\n  */\n  getRubberBandBox () {\n    if (!this.rubberBandBox) {\n      this.rubberBandBox = this.selectorParentGroup.appendChild(\n        svgFactory_.createSVGElement({\n          element: 'rect',\n          attr: {\n            id: 'selectorRubberBand',\n            fill: '#22C',\n            'fill-opacity': 0.15,\n            stroke: '#22C',\n            'stroke-width': 0.5,\n            display: 'none',\n            style: 'pointer-events:none'\n          }\n        })\n      );\n    }\n    return this.rubberBandBox;\n  }\n}\n\n/**\n * An object that creates SVG elements for the canvas.\n *\n * @interface module:select.SVGFactory\n */\n/**\n * @function module:select.SVGFactory#createSVGElement\n * @param {module:utilities.EditorContext#addSVGElementFromJson} jsonMap\n * @returns {SVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgRoot\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#svgContent\n * @returns {SVGSVGElement}\n */\n/**\n * @function module:select.SVGFactory#getCurrentZoom\n * @returns {Float}\n */\n\n/**\n * @typedef {GenericArray} module:select.Dimensions\n * @property {Integer} length 2\n * @property {Float} 0 Width\n * @property {Float} 1 Height\n */\n/**\n * @typedef {PlainObject} module:select.Config\n * @property {string} imgPath\n * @property {module:select.Dimensions} dimensions\n */\n\n/**\n * Initializes this module.\n * @function module:select.init\n * @param {module:select.Config} config - An object containing configurable parameters (imgPath)\n * @param {module:select.SVGFactory} svgFactory - An object implementing the SVGFactory interface.\n * @returns {undefined}\n */\nexport const init = function (config, svgFactory) {\n  config_ = config;\n  svgFactory_ = svgFactory;\n  selectorManager_ = new SelectorManager();\n};\n\n/**\n * @function module:select.getSelectorManager\n * @returns {module:select.SelectorManager} The SelectorManager instance.\n */\nexport const getSelectorManager = () => selectorManager_;\n","/* globals jQuery */\n/**\n * Manipulating coordinates\n * @module coords\n * @license MIT\n */\n\nimport './svgpathseg.js';\nimport {\n  snapToGrid, assignAttributes, getBBox, getRefElem, findDefs\n} from './utilities.js';\nimport {\n  transformPoint, transformListToTransform, matrixMultiply, transformBox\n} from './math.js';\nimport {getTransformList} from './svgtransformlist.js';\n\nconst $ = jQuery;\n\n// this is how we map paths to our preferred relative segment types\nconst pathMap = [\n  0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',\n  'H', 'h', 'V', 'v', 'S', 's', 'T', 't'\n];\n\n/**\n * @interface module:coords.EditorContext\n */\n/**\n * @function module:coords.EditorContext#getGridSnapping\n * @returns {boolean}\n */\n/**\n * @function module:coords.EditorContext#getDrawing\n * @returns {module:draw.Drawing}\n*/\n/**\n * @function module:coords.EditorContext#getSVGRoot\n * @returns {SVGSVGElement}\n*/\n\nlet editorContext_ = null;\n\n/**\n* @function module:coords.init\n* @param {module:coords.EditorContext} editorContext\n* @returns {undefined}\n*/\nexport const init = function (editorContext) {\n  editorContext_ = editorContext;\n};\n\n/**\n * Applies coordinate changes to an element based on the given matrix.\n * @function module:coords.remapElement\n * @implements {module:path.EditorContext#remapElement}\n*/\nexport const remapElement = function (selected, changes, m) {\n  const remap = function (x, y) { return transformPoint(x, y, m); },\n    scalew = function (w) { return m.a * w; },\n    scaleh = function (h) { return m.d * h; },\n    doSnapping = editorContext_.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',\n    finishUp = function () {\n      if (doSnapping) {\n        Object.entries(changes).forEach(([o, value]) => {\n          changes[o] = snapToGrid(value);\n        });\n      }\n      assignAttributes(selected, changes, 1000, true);\n    },\n    box = getBBox(selected);\n\n  for (let i = 0; i < 2; i++) {\n    const type = i === 0 ? 'fill' : 'stroke';\n    const attrVal = selected.getAttribute(type);\n    if (attrVal && attrVal.startsWith('url(')) {\n      if (m.a < 0 || m.d < 0) {\n        const grad = getRefElem(attrVal);\n        const newgrad = grad.cloneNode(true);\n        if (m.a < 0) {\n          // flip x\n          const x1 = newgrad.getAttribute('x1');\n          const x2 = newgrad.getAttribute('x2');\n          newgrad.setAttribute('x1', -(x1 - 1));\n          newgrad.setAttribute('x2', -(x2 - 1));\n        }\n\n        if (m.d < 0) {\n          // flip y\n          const y1 = newgrad.getAttribute('y1');\n          const y2 = newgrad.getAttribute('y2');\n          newgrad.setAttribute('y1', -(y1 - 1));\n          newgrad.setAttribute('y2', -(y2 - 1));\n        }\n        newgrad.id = editorContext_.getDrawing().getNextId();\n        findDefs().append(newgrad);\n        selected.setAttribute(type, 'url(#' + newgrad.id + ')');\n      }\n\n      // Not really working :(\n      // if (selected.tagName === 'path') {\n      //   reorientGrads(selected, m);\n      // }\n    }\n  }\n\n  const elName = selected.tagName;\n  if (elName === 'g' || elName === 'text' || elName === 'tspan' || elName === 'use') {\n    // if it was a translate, then just update x,y\n    if (m.a === 1 && m.b === 0 && m.c === 0 && m.d === 1 && (m.e !== 0 || m.f !== 0)) {\n      // [T][M] = [M][T']\n      // therefore [T'] = [M_inv][T][M]\n      const existing = transformListToTransform(selected).matrix,\n        tNew = matrixMultiply(existing.inverse(), m, existing);\n      changes.x = parseFloat(changes.x) + tNew.e;\n      changes.y = parseFloat(changes.y) + tNew.f;\n    } else {\n      // we just absorb all matrices into the element and don't do any remapping\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    }\n  }\n\n  // now we have a set of changes and an applied reduced transform list\n  // we apply the changes directly to the DOM\n  switch (elName) {\n  case 'foreignObject':\n  case 'rect':\n  case 'image': {\n    // Allow images to be inverted (give them matrix when flipped)\n    if (elName === 'image' && (m.a < 0 || m.d < 0)) {\n      // Convert to matrix\n      const chlist = getTransformList(selected);\n      const mt = editorContext_.getSVGRoot().createSVGTransform();\n      mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix, m));\n      chlist.clear();\n      chlist.appendItem(mt);\n    } else {\n      const pt1 = remap(changes.x, changes.y);\n      changes.width = scalew(changes.width);\n      changes.height = scaleh(changes.height);\n      changes.x = pt1.x + Math.min(0, changes.width);\n      changes.y = pt1.y + Math.min(0, changes.height);\n      changes.width = Math.abs(changes.width);\n      changes.height = Math.abs(changes.height);\n    }\n    finishUp();\n    break;\n  } case 'ellipse': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    changes.rx = scalew(changes.rx);\n    changes.ry = scaleh(changes.ry);\n    changes.rx = Math.abs(changes.rx);\n    changes.ry = Math.abs(changes.ry);\n    finishUp();\n    break;\n  } case 'circle': {\n    const c = remap(changes.cx, changes.cy);\n    changes.cx = c.x;\n    changes.cy = c.y;\n    // take the minimum of the new selected box's dimensions for the new circle radius\n    const tbox = transformBox(box.x, box.y, box.width, box.height, m);\n    const w = tbox.tr.x - tbox.tl.x, h = tbox.bl.y - tbox.tl.y;\n    changes.r = Math.min(w / 2, h / 2);\n\n    if (changes.r) { changes.r = Math.abs(changes.r); }\n    finishUp();\n    break;\n  } case 'line': {\n    const pt1 = remap(changes.x1, changes.y1);\n    const pt2 = remap(changes.x2, changes.y2);\n    changes.x1 = pt1.x;\n    changes.y1 = pt1.y;\n    changes.x2 = pt2.x;\n    changes.y2 = pt2.y;\n  } // Fallthrough\n  case 'text':\n  case 'tspan':\n  case 'use': {\n    finishUp();\n    break;\n  } case 'g': {\n    const gsvg = $(selected).data('gsvg');\n    if (gsvg) {\n      assignAttributes(gsvg, changes, 1000, true);\n    }\n    break;\n  } case 'polyline':\n  case 'polygon': {\n    const len = changes.points.length;\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      const {x, y} = remap(pt.x, pt.y);\n      changes.points[i].x = x;\n      changes.points[i].y = y;\n    }\n\n    // const len = changes.points.length;\n    let pstr = '';\n    for (let i = 0; i < len; ++i) {\n      const pt = changes.points[i];\n      pstr += pt.x + ',' + pt.y + ' ';\n    }\n    selected.setAttribute('points', pstr);\n    break;\n  } case 'path': {\n    const segList = selected.pathSegList;\n    let len = segList.numberOfItems;\n    changes.d = [];\n    for (let i = 0; i < len; ++i) {\n      const seg = segList.getItem(i);\n      changes.d[i] = {\n        type: seg.pathSegType,\n        x: seg.x,\n        y: seg.y,\n        x1: seg.x1,\n        y1: seg.y1,\n        x2: seg.x2,\n        y2: seg.y2,\n        r1: seg.r1,\n        r2: seg.r2,\n        angle: seg.angle,\n        largeArcFlag: seg.largeArcFlag,\n        sweepFlag: seg.sweepFlag\n      };\n    }\n\n    len = changes.d.length;\n    const firstseg = changes.d[0],\n      currentpt = remap(firstseg.x, firstseg.y);\n    changes.d[0].x = currentpt.x;\n    changes.d[0].y = currentpt.y;\n    for (let i = 1; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      // if absolute or first segment, we want to remap x, y, x1, y1, x2, y2\n      // if relative, we want to scalew, scaleh\n      if (type % 2 === 0) { // absolute\n        const thisx = (seg.x !== undefined) ? seg.x : currentpt.x, // for V commands\n          thisy = (seg.y !== undefined) ? seg.y : currentpt.y; // for H commands\n        const pt = remap(thisx, thisy);\n        const pt1 = remap(seg.x1, seg.y1);\n        const pt2 = remap(seg.x2, seg.y2);\n        seg.x = pt.x;\n        seg.y = pt.y;\n        seg.x1 = pt1.x;\n        seg.y1 = pt1.y;\n        seg.x2 = pt2.x;\n        seg.y2 = pt2.y;\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      } else { // relative\n        seg.x = scalew(seg.x);\n        seg.y = scaleh(seg.y);\n        seg.x1 = scalew(seg.x1);\n        seg.y1 = scaleh(seg.y1);\n        seg.x2 = scalew(seg.x2);\n        seg.y2 = scaleh(seg.y2);\n        seg.r1 = scalew(seg.r1);\n        seg.r2 = scaleh(seg.r2);\n      }\n    } // for each segment\n\n    let dstr = '';\n    len = changes.d.length;\n    for (let i = 0; i < len; ++i) {\n      const seg = changes.d[i];\n      const {type} = seg;\n      dstr += pathMap[type];\n      switch (type) {\n      case 13: // relative horizontal line (h)\n      case 12: // absolute horizontal line (H)\n        dstr += seg.x + ' ';\n        break;\n      case 15: // relative vertical line (v)\n      case 14: // absolute vertical line (V)\n        dstr += seg.y + ' ';\n        break;\n      case 3: // relative move (m)\n      case 5: // relative line (l)\n      case 19: // relative smooth quad (t)\n      case 2: // absolute move (M)\n      case 4: // absolute line (L)\n      case 18: // absolute smooth quad (T)\n        dstr += seg.x + ',' + seg.y + ' ';\n        break;\n      case 7: // relative cubic (c)\n      case 6: // absolute cubic (C)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x2 + ',' + seg.y2 + ' ' +\n          seg.x + ',' + seg.y + ' ';\n        break;\n      case 9: // relative quad (q)\n      case 8: // absolute quad (Q)\n        dstr += seg.x1 + ',' + seg.y1 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 11: // relative elliptical arc (a)\n      case 10: // absolute elliptical arc (A)\n        dstr += seg.r1 + ',' + seg.r2 + ' ' + seg.angle + ' ' + Number(seg.largeArcFlag) +\n          ' ' + Number(seg.sweepFlag) + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      case 17: // relative smooth cubic (s)\n      case 16: // absolute smooth cubic (S)\n        dstr += seg.x2 + ',' + seg.y2 + ' ' + seg.x + ',' + seg.y + ' ';\n        break;\n      }\n    }\n\n    selected.setAttribute('d', dstr);\n    break;\n  }\n  }\n};\n","/* eslint-disable indent */\n/* globals jQuery, jsPDF */\n/**\n * Numerous tools for working with the editor's \"canvas\"\n * @module svgcanvas\n *\n * @license MIT\n *\n * @copyright 2010 Alexis Deveria, 2010 Pavol Rusnak, 2010 Jeff Schiller\n *\n */\n\n/* Dependencies:\n1. Also expects jQuery UI for `svgCanvasToString` and\n`convertToGroup` use of `:data()` selector\n*/\n\n// Todo: Obtain/adapt latest jsPDF to utilize ES Module for `jsPDF`/avoid global\n\nimport './svgpathseg.js';\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport jQueryPluginDBox from './dbox.js';\nimport * as draw from './draw.js'; // eslint-disable-line import/no-duplicates\nimport { // eslint-disable-line no-duplicate-imports\n  identifyLayers, createLayer, cloneLayer, deleteCurrentLayer,\n  setCurrentLayer, renameCurrentLayer, setCurrentLayerPosition,\n  setLayerVisibility, moveSelectedToLayer, mergeLayer, mergeAllLayers,\n  leaveContext, setContext\n} from './draw.js'; // eslint-disable-line import/no-duplicates\nimport * as pathModule from './path.js';\nimport {sanitizeSvg} from './sanitize.js';\nimport {getReverseNS, NS} from './namespaces.js';\nimport {importSetGlobal, importScript} from './external/dynamic-import-polyfill/importModule.js';\nimport {\n  text2xml, assignAttributes, cleanupElement, getElem, getUrlFromAttr,\n  findDefs, getHref, setHref, getRefElem, getRotationAngle, getPathBBox,\n  preventClickDefault, snapToGrid, walkTree, walkTreePost,\n  getBBoxOfElementAsPath, convertToPath, toXml, encode64, decode64,\n  dataURLToObjectURL, createObjectURL,\n  getVisibleElements, dropXMLInteralSubset,\n  init as utilsInit, getBBox as utilsGetBBox, getStrokedBBoxDefaultVisible,\n  isNullish\n} from './utilities.js';\nimport * as hstry from './history.js';\nimport {\n  transformPoint, matrixMultiply, hasMatrixTransform, transformListToTransform,\n  getMatrix, snapToAngle, isIdentity, rectsIntersect, transformBox\n} from './math.js';\nimport {\n  convertToNum, convertAttrs, convertUnit, shortFloat, getTypeMap,\n  init as unitsInit\n} from './units.js';\nimport {\n  isGecko, isChrome, isIE, isWebkit, supportsNonScalingStroke, supportsGoodTextCharPos\n} from './browser.js'; // , supportsEditableText\nimport {\n  getTransformList, resetListMap,\n  SVGTransformList as SVGEditTransformList\n} from './svgtransformlist.js';\nimport {\n  remapElement,\n  init as coordsInit\n} from './coords.js';\nimport {\n  recalculateDimensions,\n  init as recalculateInit\n} from './recalculate.js';\nimport {\n  getSelectorManager,\n  Selector,\n  init as selectInit\n} from './select.js';\n\nlet $ = jQueryPluginSVG(jQuery);\nconst {\n  MoveElementCommand, InsertElementCommand, RemoveElementCommand,\n  ChangeElementCommand, BatchCommand, UndoManager, HistoryEventTypes\n} = hstry;\n\nif (!window.console) {\n  window.console = {};\n  window.console.log = function (str) { /* */ };\n  window.console.dir = function (str) { /* */ };\n}\n\nif (window.opera) {\n  window.console.log = function (str) { window.opera.postError(str); };\n  window.console.dir = function (str) { /* */ };\n}\n\n/**\n* The main SvgCanvas class that manages all SVG-related functions.\n* @memberof module:svgcanvas\n*\n* @borrows module:coords.remapElement as #remapElement\n* @borrows module:recalculate.recalculateDimensions as #recalculateDimensions\n*\n* @borrows module:utilities.cleanupElement as #cleanupElement\n* @borrows module:utilities.getStrokedBBoxDefaultVisible as #getStrokedBBox\n* @borrows module:utilities.getVisibleElements as #getVisibleElements\n* @borrows module:utilities.findDefs as #findDefs\n* @borrows module:utilities.getUrlFromAttr as #getUrlFromAttr\n* @borrows module:utilities.getHref as #getHref\n* @borrows module:utilities.setHref as #setHref\n* @borrows module:utilities.getRotationAngle as #getRotationAngle\n* @borrows module:utilities.getBBox as #getBBox\n* @borrows module:utilities.getElem as #getElem\n* @borrows module:utilities.getRefElem as #getRefElem\n* @borrows module:utilities.assignAttributes as #assignAttributes\n*\n* @borrows module:SVGTransformList.getTransformList as #getTransformList\n* @borrows module:math.matrixMultiply as #matrixMultiply\n* @borrows module:math.hasMatrixTransform as #hasMatrixTransform\n* @borrows module:math.transformListToTransform as #transformListToTransform\n* @borrows module:units.convertToNum as #convertToNum\n* @borrows module:sanitize.sanitizeSvg as #sanitizeSvg\n* @borrows module:path.pathActions.linkControlPoints as #linkControlPoints\n*/\nclass SvgCanvas {\n  /**\n  * @param {HTMLElement} container - The container HTML element that should hold the SVG root element\n  * @param {module:SVGEditor.curConfig} config - An object that contains configuration data\n  */\n  constructor (container, config) {\n// Alias Namespace constants\n\n// Default configuration options\nconst curConfig = {\n  show_outside_canvas: true,\n  selectNew: true,\n  dimensions: [640, 480]\n};\n\n// Update config with new one if given\nif (config) {\n  $.extend(curConfig, config);\n}\n\n// Array with width/height of canvas\nconst {dimensions} = curConfig;\n\nconst canvas = this; // eslint-disable-line consistent-this\n\n// \"document\" element associated with the container (same as window.document using default svg-editor.js)\n// NOTE: This is not actually a SVG document, but an HTML document.\nconst svgdoc = container.ownerDocument;\n\n// This is a container for the document being edited, not the document itself.\n/**\n * @name module:svgcanvas~svgroot\n * @type {SVGSVGElement}\n */\nconst svgroot = svgdoc.importNode(\n  text2xml(\n    '<svg id=\"svgroot\" xmlns=\"' + NS.SVG + '\" xlinkns=\"' + NS.XLINK + '\" ' +\n      'width=\"' + dimensions[0] + '\" height=\"' + dimensions[1] + '\" x=\"' + dimensions[0] + '\" y=\"' + dimensions[1] + '\" overflow=\"visible\">' +\n      '<defs>' +\n        '<filter id=\"canvashadow\" filterUnits=\"objectBoundingBox\">' +\n          '<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"4\" result=\"blur\"/>' +\n          '<feOffset in=\"blur\" dx=\"5\" dy=\"5\" result=\"offsetBlur\"/>' +\n          '<feMerge>' +\n            '<feMergeNode in=\"offsetBlur\"/>' +\n            '<feMergeNode in=\"SourceGraphic\"/>' +\n          '</feMerge>' +\n        '</filter>' +\n      '</defs>' +\n    '</svg>'\n  ).documentElement,\n  true\n);\ncontainer.append(svgroot);\n\n/**\n * The actual element that represents the final output SVG element\n * @name module:svgcanvas~svgcontent\n * @type {SVGSVGElement}\n */\nlet svgcontent = svgdoc.createElementNS(NS.SVG, 'svg');\n\n/**\n* This function resets the svgcontent element while keeping it in the DOM.\n* @function module:svgcanvas.SvgCanvas#clearSvgContentElement\n* @returns {undefined}\n*/\nconst clearSvgContentElement = canvas.clearSvgContentElement = function () {\n  $(svgcontent).empty();\n\n  // TODO: Clear out all other attributes first?\n  $(svgcontent).attr({\n    id: 'svgcontent',\n    width: dimensions[0],\n    height: dimensions[1],\n    x: dimensions[0],\n    y: dimensions[1],\n    overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden',\n    xmlns: NS.SVG,\n    'xmlns:se': NS.SE,\n    'xmlns:xlink': NS.XLINK\n  }).appendTo(svgroot);\n\n  // TODO: make this string optional and set by the client\n  const comment = svgdoc.createComment(' Created with SVG-edit - https://github.com/SVG-Edit/svgedit');\n  svgcontent.append(comment);\n};\nclearSvgContentElement();\n\n// Prefix string for element IDs\nlet idprefix = 'svg_';\n\n/**\n* Changes the ID prefix to the given value.\n* @function module:svgcanvas.SvgCanvas#setIdPrefix\n* @param {string} p - String with the new prefix\n* @returns {undefined}\n*/\ncanvas.setIdPrefix = function (p) {\n  idprefix = p;\n};\n\n/**\n* Current draw.Drawing object\n* @type {module:draw.Drawing}\n* @name module:svgcanvas.SvgCanvas#current_drawing_\n*/\ncanvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n/**\n* Returns the current Drawing.\n* @function module:svgcanvas.SvgCanvas#getCurrentDrawing\n* @implements {module:draw.DrawCanvasInit#getCurrentDrawing}\n*/\nconst getCurrentDrawing = canvas.getCurrentDrawing = function () {\n  return canvas.current_drawing_;\n};\n\n/**\n* Float displaying the current zoom level (1 = 100%, .5 = 50%, etc)\n* @type {Float}\n*/\nlet currentZoom = 1;\n\n// pointer to current group (for in-group editing)\nlet currentGroup = null;\n\n// Object containing data for the currently selected styles\nconst allProperties = {\n  shape: {\n    fill: (curConfig.initFill.color === 'none' ? '' : '#') + curConfig.initFill.color,\n    fill_paint: null,\n    fill_opacity: curConfig.initFill.opacity,\n    stroke: '#' + curConfig.initStroke.color,\n    stroke_paint: null,\n    stroke_opacity: curConfig.initStroke.opacity,\n    stroke_width: curConfig.initStroke.width,\n    stroke_dasharray: 'none',\n    stroke_linejoin: 'miter',\n    stroke_linecap: 'butt',\n    opacity: curConfig.initOpacity\n  }\n};\n\nallProperties.text = $.extend(true, {}, allProperties.shape);\n$.extend(allProperties.text, {\n  fill: '#000000',\n  stroke_width: curConfig.text && curConfig.text.stroke_width,\n  font_size: curConfig.text && curConfig.text.font_size,\n  font_family: curConfig.text && curConfig.text.font_family\n});\n\n// Current shape style properties\nconst curShape = allProperties.shape;\n\n// Array with all the currently selected elements\n// default size of 1 until it needs to grow bigger\nlet selectedElements = [];\n\n/**\n* @typedef {PlainObject} module:svgcanvas.SVGAsJSON\n* @property {string} element\n* @property {PlainObject.<string, string>} attr\n* @property {module:svgcanvas.SVGAsJSON[]} children\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @param {Text|Element} data\n* @returns {module:svgcanvas.SVGAsJSON}\n*/\nconst getJsonFromSvgElement = this.getJsonFromSvgElement = function (data) {\n  // Text node\n  if (data.nodeType === 3) return data.nodeValue;\n\n  const retval = {\n    element: data.tagName,\n    // namespace: nsMap[data.namespaceURI],\n    attr: {},\n    children: []\n  };\n\n  // Iterate attributes\n  for (let i = 0, attr; (attr = data.attributes[i]); i++) {\n    retval.attr[attr.name] = attr.value;\n  }\n\n  // Iterate children\n  for (let i = 0, node; (node = data.childNodes[i]); i++) {\n    retval.children[i] = getJsonFromSvgElement(node);\n  }\n\n  return retval;\n};\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @function module:svgcanvas.SvgCanvas#addSVGElementFromJson\n* @implements {module:utilities.EditorContext#addSVGElementFromJson|module:path.EditorContext#addSVGElementFromJson}\n*/\nconst addSVGElementFromJson = this.addSVGElementFromJson = function (data) {\n  if (typeof data === 'string') return svgdoc.createTextNode(data);\n\n  let shape = getElem(data.attr.id);\n  // if shape is a path but we need to create a rect/ellipse, then remove the path\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (shape && data.element !== shape.tagName) {\n    shape.remove();\n    shape = null;\n  }\n  if (!shape) {\n    const ns = data.namespace || NS.SVG;\n    shape = svgdoc.createElementNS(ns, data.element);\n    if (currentLayer) {\n      (currentGroup || currentLayer).append(shape);\n    }\n  }\n  if (data.curStyles) {\n    assignAttributes(shape, {\n      fill: curShape.fill,\n      stroke: curShape.stroke,\n      'stroke-width': curShape.stroke_width,\n      'stroke-dasharray': curShape.stroke_dasharray,\n      'stroke-linejoin': curShape.stroke_linejoin,\n      'stroke-linecap': curShape.stroke_linecap,\n      'stroke-opacity': curShape.stroke_opacity,\n      'fill-opacity': curShape.fill_opacity,\n      opacity: curShape.opacity / 2,\n      style: 'pointer-events:inherit'\n    }, 100);\n  }\n  assignAttributes(shape, data.attr, 100);\n  cleanupElement(shape);\n\n  // Children\n  if (data.children) {\n    data.children.forEach((child) => {\n      shape.append(addSVGElementFromJson(child));\n    });\n  }\n\n  return shape;\n};\n\ncanvas.getTransformList = getTransformList;\n\ncanvas.matrixMultiply = matrixMultiply;\ncanvas.hasMatrixTransform = hasMatrixTransform;\ncanvas.transformListToTransform = transformListToTransform;\n\n/**\n* @implements {module:utilities.EditorContext#getBaseUnit}\n*/\nconst getBaseUnit = () => { return curConfig.baseUnit; };\n\n/**\n* initialize from units.js.\n* Send in an object implementing the ElementContainer interface (see units.js)\n*/\nunitsInit(\n  /**\n  * @implements {module:units.ElementContainer}\n  */\n  {\n    getBaseUnit,\n    getElement: getElem,\n    getHeight () { return svgcontent.getAttribute('height') / currentZoom; },\n    getWidth () { return svgcontent.getAttribute('width') / currentZoom; },\n    getRoundDigits () { return saveOptions.round_digits; }\n  }\n);\n\ncanvas.convertToNum = convertToNum;\n\n/**\n* This should really be an intersection implementing all rather than a union.\n* @implements {module:draw.DrawCanvasInit#getSVGContent|module:utilities.EditorContext#getSVGContent}\n*/\nconst getSVGContent = () => { return svgcontent; };\n\n/**\n* Should really be an intersection with all needing to apply rather than a union.\n* @function module:svgcanvas.SvgCanvas#getSelectedElements\n* @implements {module:utilities.EditorContext#getSelectedElements|module:draw.DrawCanvasInit#getSelectedElements|module:path.EditorContext#getSelectedElements}\n*/\nconst getSelectedElements = this.getSelectedElems = function () {\n  return selectedElements;\n};\n\nconst {pathActions} = pathModule;\n\n/**\n* This should actually be an intersection as all interfaces should be met.\n* @implements {module:utilities.EditorContext#getSVGRoot|module:recalculate.EditorContext#getSVGRoot|module:coords.EditorContext#getSVGRoot|module:path.EditorContext#getSVGRoot}\n*/\nconst getSVGRoot = () => svgroot;\n\nutilsInit(\n  /**\n  * @implements {module:utilities.EditorContext}\n  */\n  {\n    pathActions, // Ok since not modifying\n    getSVGContent,\n    addSVGElementFromJson,\n    getSelectedElements,\n    getDOMDocument () { return svgdoc; },\n    getDOMContainer () { return container; },\n    getSVGRoot,\n    // TODO: replace this mostly with a way to get the current drawing.\n    getBaseUnit,\n    getSnappingStep () { return curConfig.snappingStep; }\n  }\n);\n\ncanvas.findDefs = findDefs;\ncanvas.getUrlFromAttr = getUrlFromAttr;\ncanvas.getHref = getHref;\ncanvas.setHref = setHref;\n/* const getBBox = */ canvas.getBBox = utilsGetBBox;\ncanvas.getRotationAngle = getRotationAngle;\ncanvas.getElem = getElem;\ncanvas.getRefElem = getRefElem;\ncanvas.assignAttributes = assignAttributes;\n\nthis.cleanupElement = cleanupElement;\n\n/**\n* This should actually be an intersection not a union as all should apply.\n* @implements {module:coords.EditorContext|module:path.EditorContext}\n*/\nconst getGridSnapping = () => { return curConfig.gridSnapping; };\n\ncoordsInit(\n  /**\n  * @implements {module:coords.EditorContext}\n  */\n  {\n    getDrawing () { return getCurrentDrawing(); },\n    getSVGRoot,\n    getGridSnapping\n  }\n);\nthis.remapElement = remapElement;\n\nrecalculateInit(\n  /**\n  * @implements {module:recalculate.EditorContext}\n  */\n  {\n    getSVGRoot,\n    getStartTransform () { return startTransform; },\n    setStartTransform (transform) { startTransform = transform; }\n  }\n);\nthis.recalculateDimensions = recalculateDimensions;\n\n// import from sanitize.js\nconst nsMap = getReverseNS();\ncanvas.sanitizeSvg = sanitizeSvg;\n\n/**\n* @name undoMgr\n* @memberof module:svgcanvas.SvgCanvas#\n* @type {module:history.HistoryEventHandler}\n*/\nconst undoMgr = canvas.undoMgr = new UndoManager({\n  /**\n   * @param {string} eventType One of the HistoryEvent types\n   * @param {module:history.HistoryCommand} cmd Fulfills the HistoryCommand interface\n   * @fires module:svgcanvas.SvgCanvas#event:changed\n   * @returns {undefined}\n   */\n  handleHistoryEvent (eventType, cmd) {\n    const EventTypes = HistoryEventTypes;\n    // TODO: handle setBlurOffsets.\n    if (eventType === EventTypes.BEFORE_UNAPPLY || eventType === EventTypes.BEFORE_APPLY) {\n      canvas.clearSelection();\n    } else if (eventType === EventTypes.AFTER_APPLY || eventType === EventTypes.AFTER_UNAPPLY) {\n      const elems = cmd.elements();\n      canvas.pathActions.clear();\n      call('changed', elems);\n      const cmdType = cmd.type();\n      const isApply = (eventType === EventTypes.AFTER_APPLY);\n      if (cmdType === MoveElementCommand.type()) {\n        const parent = isApply ? cmd.newParent : cmd.oldParent;\n        if (parent === svgcontent) {\n          draw.identifyLayers();\n        }\n      } else if (cmdType === InsertElementCommand.type() ||\n          cmdType === RemoveElementCommand.type()) {\n        if (cmd.parent === svgcontent) {\n          draw.identifyLayers();\n        }\n        if (cmdType === InsertElementCommand.type()) {\n          if (isApply) { restoreRefElems(cmd.elem); }\n        } else if (!isApply) {\n          restoreRefElems(cmd.elem);\n        }\n        if (cmd.elem.tagName === 'use') {\n          setUseData(cmd.elem);\n        }\n      } else if (cmdType === ChangeElementCommand.type()) {\n        // if we are changing layer names, re-identify all layers\n        if (cmd.elem.tagName === 'title' &&\n          cmd.elem.parentNode.parentNode === svgcontent\n        ) {\n          draw.identifyLayers();\n        }\n        const values = isApply ? cmd.newValues : cmd.oldValues;\n        // If stdDeviation was changed, update the blur.\n        if (values.stdDeviation) {\n          canvas.setBlurOffsets(cmd.elem.parentNode, values.stdDeviation);\n        }\n        // This is resolved in later versions of webkit, perhaps we should\n        // have a featured detection for correct 'use' behavior?\n        // ——————————\n        // Remove & Re-add hack for Webkit (issue 775)\n        // if (cmd.elem.tagName === 'use' && isWebkit()) {\n        //  const {elem} = cmd;\n        //  if (!elem.getAttribute('x') && !elem.getAttribute('y')) {\n        //    const parent = elem.parentNode;\n        //    const sib = elem.nextSibling;\n        //    elem.remove();\n        //    parent.insertBefore(elem, sib);\n        //    // Ok to replace above with this? `sib.before(elem);`\n        //  }\n        // }\n      }\n    }\n  }\n});\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas~addCommandToHistory\n* @implements {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory}\n*/\nconst addCommandToHistory = function (cmd) {\n  canvas.undoMgr.addCommandToHistory(cmd);\n};\n\n/**\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#getZoom\n* @implements {module:path.EditorContext#getCurrentZoom|module:select.SVGFactory#getCurrentZoom}\n*/\nconst getCurrentZoom = this.getZoom = function () { return currentZoom; };\n\n/**\n* This method rounds the incoming value to the nearest value based on the `currentZoom`\n* @function module:svgcanvas.SvgCanvas#round\n* @implements {module:path.EditorContext#round}\n*/\nconst round = this.round = function (val) {\n  return parseInt(val * currentZoom) / currentZoom;\n};\n\nselectInit(\n  curConfig,\n  /**\n  * Export to select.js\n  * @implements {module:select.SVGFactory}\n  */\n  {\n    createSVGElement (jsonMap) { return canvas.addSVGElementFromJson(jsonMap); },\n    svgRoot () { return svgroot; },\n    svgContent () { return svgcontent; },\n    getCurrentZoom\n  }\n);\n/**\n* This object manages selectors for us\n* @name module:svgcanvas.SvgCanvas#selectorManager\n* @type {module:select.SelectorManager}\n*/\nconst selectorManager = this.selectorManager = getSelectorManager();\n\n/**\n* @function module:svgcanvas.SvgCanvas#getNextId\n* @implements {module:path.EditorContext#getNextId}\n*/\nconst getNextId = canvas.getNextId = function () {\n  return getCurrentDrawing().getNextId();\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getId\n* @implements {module:path.EditorContext#getId}\n*/\nconst getId = canvas.getId = function () {\n  return getCurrentDrawing().getId();\n};\n\n/**\n* The \"implements\" should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#call\n* @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}\n* @param {\"selected\"|\"changed\"|\"contextset\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String with the event name\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.\n* @returns {module:svgcanvas.EventHandlerReturn|undefined}\n*/\nconst call = function (ev, arg) {\n  if (events[ev]) {\n    return events[ev](window, arg);\n  }\n  return undefined;\n};\n\n/**\n* Clears the selection. The 'selected' handler is then optionally called.\n* This should really be an intersection applying to all types rather than a union.\n* @function module:svgcanvas.SvgCanvas#clearSelection\n* @implements {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst clearSelection = this.clearSelection = function (noCall) {\n  selectedElements.forEach((elem) => {\n    if (isNullish(elem)) {\n      return;\n    }\n    selectorManager.releaseSelector(elem);\n  });\n  selectedElements = [];\n\n  if (!noCall) { call('selected', selectedElements); }\n};\n\n/**\n* Adds a list of elements to the selection. The 'selected' handler is then called.\n* @function module:svgcanvas.SvgCanvas#addToSelection\n* @implements {module:path.EditorContext#addToSelection}\n* @fires module:svgcanvas.SvgCanvas#event:selected\n*/\nconst addToSelection = this.addToSelection = function (elemsToAdd, showGrips) {\n  if (!elemsToAdd.length) { return; }\n  // find the first null in our selectedElements array\n\n  let j = 0;\n  while (j < selectedElements.length) {\n    if (isNullish(selectedElements[j])) {\n      break;\n    }\n    ++j;\n  }\n\n  // now add each element consecutively\n  let i = elemsToAdd.length;\n  while (i--) {\n    let elem = elemsToAdd[i];\n    if (!elem) { continue; }\n    const bbox = utilsGetBBox(elem);\n    if (!bbox) { continue; }\n\n    if (elem.tagName === 'a' && elem.childNodes.length === 1) {\n      // Make \"a\" element's child be the selected element\n      elem = elem.firstChild;\n    }\n\n    // if it's not already there, add it\n    if (!selectedElements.includes(elem)) {\n      selectedElements[j] = elem;\n\n      // only the first selectedBBoxes element is ever used in the codebase these days\n      // if (j === 0) selectedBBoxes[0] = utilsGetBBox(elem);\n      j++;\n      const sel = selectorManager.requestSelector(elem, bbox);\n\n      if (selectedElements.length > 1) {\n        sel.showGrips(false);\n      }\n    }\n  }\n  call('selected', selectedElements);\n\n  if (showGrips || selectedElements.length === 1) {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(true);\n  } else {\n    selectorManager.requestSelector(selectedElements[0]).showGrips(false);\n  }\n\n  // make sure the elements are in the correct order\n  // See: https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-compareDocumentPosition\n\n  selectedElements.sort(function (a, b) {\n    if (a && b && a.compareDocumentPosition) {\n      return 3 - (b.compareDocumentPosition(a) & 6); // eslint-disable-line no-bitwise\n    }\n    if (isNullish(a)) {\n      return 1;\n    }\n    return 0;\n  });\n\n  // Make sure first elements are not null\n  while (isNullish(selectedElements[0])) {\n    selectedElements.shift(0);\n  }\n};\n\n/**\n* @implements {module:path.EditorContext#getOpacity}\n*/\nconst getOpacity = function () {\n  return curShape.opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMouseTarget\n* @implements {module:path.EditorContext#getMouseTarget}\n*/\nconst getMouseTarget = this.getMouseTarget = function (evt) {\n  if (isNullish(evt)) {\n    return null;\n  }\n  let mouseTarget = evt.target;\n\n  // if it was a <use>, Opera and WebKit return the SVGElementInstance\n  if (mouseTarget.correspondingUseElement) { mouseTarget = mouseTarget.correspondingUseElement; }\n\n  // for foreign content, go up until we find the foreignObject\n  // WebKit browsers set the mouse target to the svgcanvas div\n  if ([NS.MATH, NS.HTML].includes(mouseTarget.namespaceURI) &&\n    mouseTarget.id !== 'svgcanvas'\n  ) {\n    while (mouseTarget.nodeName !== 'foreignObject') {\n      mouseTarget = mouseTarget.parentNode;\n      if (!mouseTarget) { return svgroot; }\n    }\n  }\n\n  // Get the desired mouseTarget with jQuery selector-fu\n  // If it's root-like, select the root\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if ([svgroot, container, svgcontent, currentLayer].includes(mouseTarget)) {\n    return svgroot;\n  }\n\n  const $target = $(mouseTarget);\n\n  // If it's a selection grip, return the grip parent\n  if ($target.closest('#selectorParentGroup').length) {\n    // While we could instead have just returned mouseTarget,\n    // this makes it easier to indentify as being a selector grip\n    return selectorManager.selectorParentGroup;\n  }\n\n  while (mouseTarget.parentNode !== (currentGroup || currentLayer)) {\n    mouseTarget = mouseTarget.parentNode;\n  }\n\n  //\n  // // go up until we hit a child of a layer\n  // while (mouseTarget.parentNode.parentNode.tagName == 'g') {\n  //   mouseTarget = mouseTarget.parentNode;\n  // }\n  // Webkit bubbles the mouse event all the way up to the div, so we\n  // set the mouseTarget to the svgroot like the other browsers\n  // if (mouseTarget.nodeName.toLowerCase() == 'div') {\n  //   mouseTarget = svgroot;\n  // }\n\n  return mouseTarget;\n};\n\n/**\n* @namespace {module:path.pathActions} pathActions\n* @memberof module:svgcanvas.SvgCanvas#\n* @see module:path.pathActions\n*/\ncanvas.pathActions = pathActions;\n/**\n* @implements {module:path.EditorContext#resetD}\n*/\nfunction resetD (p) {\n  p.setAttribute('d', pathActions.convertPath(p));\n}\npathModule.init(\n  /**\n  * @implements {module:path.EditorContext}\n  */\n  {\n    selectorManager, // Ok since not changing\n    canvas, // Ok since not changing\n    call,\n    resetD,\n    round,\n    clearSelection,\n    addToSelection,\n    addCommandToHistory,\n    remapElement,\n    addSVGElementFromJson,\n    getGridSnapping,\n    getOpacity,\n    getSelectedElements,\n    getContainer () {\n      return container;\n    },\n    setStarted (s) {\n      started = s;\n    },\n    getRubberBox () {\n      return rubberBox;\n    },\n    setRubberBox (rb) {\n      rubberBox = rb;\n      return rubberBox;\n    },\n    /**\n     * @param {PlainObject} ptsInfo\n     * @param {boolean} ptsInfo.closedSubpath\n     * @param {SVGCircleElement[]} ptsInfo.grips\n     * @fires module:svgcanvas.SvgCanvas#event:pointsAdded\n     * @fires module:svgcanvas.SvgCanvas#event:selected\n     * @returns {undefined}\n     */\n    addPtsToSelection ({closedSubpath, grips}) {\n      // TODO: Correct this:\n      pathActions.canDeleteNodes = true;\n      pathActions.closed_subpath = closedSubpath;\n      call('pointsAdded', {closedSubpath, grips});\n      call('selected', grips);\n    },\n    /**\n     * @param {PlainObject} changes\n     * @param {ChangeElementCommand} changes.cmd\n     * @param {SVGPathElement} changes.elem\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    endChanges ({cmd, elem}) {\n      addCommandToHistory(cmd);\n      call('changed', [elem]);\n    },\n    getCurrentZoom,\n    getId,\n    getNextId,\n    getMouseTarget,\n    getCurrentMode () {\n      return currentMode;\n    },\n    setCurrentMode (cm) {\n      currentMode = cm;\n      return currentMode;\n    },\n    getDrawnPath () {\n      return drawnPath;\n    },\n    setDrawnPath (dp) {\n      drawnPath = dp;\n      return drawnPath;\n    },\n    getSVGRoot\n  }\n);\n\n// Interface strings, usually for title elements\nconst uiStrings = {};\n\nconst visElems = 'a,circle,ellipse,foreignObject,g,image,line,path,polygon,polyline,rect,svg,text,tspan,use';\nconst refAttrs = ['clip-path', 'fill', 'filter', 'marker-end', 'marker-mid', 'marker-start', 'mask', 'stroke'];\n\nconst elData = $.data;\n\n// Animation element to change the opacity of any newly created element\nconst opacAni = document.createElementNS(NS.SVG, 'animate');\n$(opacAni).attr({\n  attributeName: 'opacity',\n  begin: 'indefinite',\n  dur: 1,\n  fill: 'freeze'\n}).appendTo(svgroot);\n\nconst restoreRefElems = function (elem) {\n  // Look for missing reference elements, restore any found\n  const attrs = $(elem).attr(refAttrs);\n  Object.values(attrs).forEach((val) => {\n    if (val && val.startsWith('url(')) {\n      const id = getUrlFromAttr(val).substr(1);\n      const ref = getElem(id);\n      if (!ref) {\n        findDefs().append(removedElements[id]);\n        delete removedElements[id];\n      }\n    }\n  });\n\n  const childs = elem.getElementsByTagName('*');\n\n  if (childs.length) {\n    for (let i = 0, l = childs.length; i < l; i++) {\n      restoreRefElems(childs[i]);\n    }\n  }\n};\n\n// (function () {\n// TODO For Issue 208: this is a start on a thumbnail\n//  const svgthumb = svgdoc.createElementNS(NS.SVG, 'use');\n//  svgthumb.setAttribute('width', '100');\n//  svgthumb.setAttribute('height', '100');\n//  setHref(svgthumb, '#svgcontent');\n//  svgroot.append(svgthumb);\n// }());\n\n/**\n * @typedef {PlainObject} module:svgcanvas.SaveOptions\n * @property {boolean} apply\n * @property {\"embed\"} [image]\n * @property {Integer} round_digits\n */\n\n// Object to contain image data for raster images that were found encodable\nconst encodableImages = {},\n\n  // Object with save options\n  /**\n   * @type {module:svgcanvas.SaveOptions}\n   */\n  saveOptions = {round_digits: 5},\n\n  // Object with IDs for imported files, to see if one was already added\n  importIds = {},\n\n  // Current text style properties\n  curText = allProperties.text,\n\n  // Object to contain all included extensions\n  extensions = {},\n\n  // Map of deleted reference elements\n  removedElements = {};\n\nlet\n  // String with image URL of last loadable image\n  lastGoodImgUrl = curConfig.imgPath + 'logo.png',\n\n  // Boolean indicating whether or not a draw action has been started\n  started = false,\n\n  // String with an element's initial transform attribute value\n  startTransform = null,\n\n  // String indicating the current editor mode\n  currentMode = 'select',\n\n  // String with the current direction in which an element is being resized\n  currentResizeMode = 'none',\n\n  // Current general properties\n  curProperties = curShape,\n\n  // Array with selected elements' Bounding box object\n  // selectedBBoxes = new Array(1),\n\n  // The DOM element that was just selected\n  justSelected = null,\n\n  // DOM element for selection rectangle drawn by the user\n  rubberBox = null,\n\n  // Array of current BBoxes, used in getIntersectionList().\n  curBBoxes = [],\n\n  // Canvas point for the most recent right click\n  lastClickPoint = null;\n\nthis.runExtension = function (name, action, vars) {\n  return this.runExtensions(action, vars, false, (n) => n === name);\n};\n/**\n* @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus\n* @tutorial ExtensionDocs\n*/\n/**\n* @callback module:svgcanvas.ExtensionVarBuilder\n* @param {string} name The name of the extension\n* @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}\n*/\n/**\n* @callback module:svgcanvas.ExtensionNameFilter\n* @param {string} name\n* @returns {boolean}\n*/\n/**\n* @todo Consider: Should this return an array by default, so extension results aren't overwritten?\n* @todo Would be easier to document if passing in object with key of action and vars as value; could then define an interface which tied both together\n* @function module:svgcanvas.SvgCanvas#runExtensions\n* @param {\"mouseDown\"|\"mouseMove\"|\"mouseUp\"|\"zoomChanged\"|\"IDsUpdated\"|\"canvasUpdated\"|\"toolButtonStateUpdate\"|\"selectedChanged\"|\"elementTransition\"|\"elementChanged\"|\"langReady\"|\"langChanged\"|\"addLangData\"|\"onNewDocument\"|\"workareaResized\"} action\n* @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]\n* @param {boolean} [returnArray]\n* @param {module:svgcanvas.ExtensionNameFilter} nameFilter\n* @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.\n*/\nconst runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {\n  let result = returnArray ? [] : false;\n  $.each(extensions, function (name, ext) {\n    if (nameFilter && !nameFilter(name)) {\n      return;\n    }\n    if (ext && action in ext) {\n      if (typeof vars === 'function') {\n        vars = vars(name); // ext, action\n      }\n      if (returnArray) {\n        result.push(ext[action](vars));\n      } else {\n        result = ext[action](vars);\n      }\n    }\n  });\n  return result;\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseDownStatus\n* @property {boolean} started Indicates that creating/editing has started\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionMouseUpStatus\n* @property {boolean} keep Indicates if the current element should be kept\n* @property {boolean} started Indicates if editing should still be considered as \"started\"\n* @property {Element} element The element being affected\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionIDsUpdatedStatus\n* @property {string[]} remove Contains string IDs (used by `ext-connector.js`)\n*/\n\n/**\n * @interface module:svgcanvas.ExtensionInitResponse\n * @property {module:SVGEditor.ContextTool[]|PlainObject.<string, module:SVGEditor.ContextTool>} [context_tools]\n * @property {module:SVGEditor.Button[]|PlainObject.<Integer, module:SVGEditor.Button>} [buttons]\n * @property {string} [svgicons] The location of a local SVG or SVGz file\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseDown\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown} arg\n * @returns {undefined|module:svgcanvas.ExtensionMouseDownStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseMove\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseMove} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseUp\n * @param {module:svgcanvas.SvgCanvas#event:ext-mouseUp} arg\n * @returns {module:svgcanvas.ExtensionMouseUpStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#zoomChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#IDsUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} arg\n * @returns {module:svgcanvas.ExtensionIDsUpdatedStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#canvasUpdated\n * @param {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#toolButtonStateUpdate\n * @param {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#selectedChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementTransition\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementTransition} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-elementChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langReady\n * @param {module:svgcanvas.SvgCanvas#event:ext-langReady} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext-langChanged} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#addLangData\n * @param {module:svgcanvas.SvgCanvas#event:ext-addLangData} arg\n * @returns {Promise} Resolves to {@link module:locale.ExtensionLocaleData}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#onNewDocument\n * @param {module:svgcanvas.SvgCanvas#event:ext-onNewDocument} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#workareaResized\n * @param {module:svgcanvas.SvgCanvas#event:ext-workareaResized} arg\n * @returns {undefined}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#callback\n * @this module:SVGEditor\n * @param {module:svgcanvas.SvgCanvas#event:ext-callback} arg\n * @returns {undefined}\n*/\n\n/**\n* @callback module:svgcanvas.ExtensionInitCallback\n* @this module:SVGEditor\n* @param {module:svgcanvas.ExtensionArgumentObject} arg\n* @returns {Promise} Resolves to [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse} or `undefined`\n*/\n/**\n* Add an extension to the editor.\n* @function module:svgcanvas.SvgCanvas#addExtension\n* @param {string} name - String with the ID of the extension. Used internally; no need for i18n.\n* @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data\n* @param {module:SVGEditor~ImportLocale} importLocale\n* @fires module:svgcanvas.SvgCanvas#event:extension_added\n* @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`\n*   if extension of supplied name already exists\n* @returns {Promise} Resolves to `undefined`\n*/\nthis.addExtension = async function (name, extInitFunc, importLocale) {\n  if (typeof extInitFunc !== 'function') {\n    throw new TypeError('Function argument expected for `svgcanvas.addExtension`');\n  }\n  if (name in extensions) {\n    throw new Error('Cannot add extension \"' + name + '\", an extension by that name already exists.');\n  }\n  // Provide private vars/funcs here. Is there a better way to do this?\n  /**\n   * @typedef {module:svgcanvas.PrivateMethods} module:svgcanvas.ExtensionArgumentObject\n   * @property {SVGSVGElement} svgroot See {@link module:svgcanvas~svgroot}\n   * @property {SVGSVGElement} svgcontent See {@link module:svgcanvas~svgcontent}\n   * @property {!(string|Integer)} nonce See {@link module:draw.Drawing#getNonce}\n   * @property {module:select.SelectorManager} selectorManager\n   * @property {module:SVGEditor~ImportLocale} importLocale\n   */\n  /**\n   * @type {module:svgcanvas.ExtensionArgumentObject}\n   * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties\n   */\n  const argObj = $.extend(canvas.getPrivateMethods(), {\n    $,\n    importLocale,\n    svgroot,\n    svgcontent,\n    nonce: getCurrentDrawing().getNonce(),\n    selectorManager\n  });\n  const extObj = await extInitFunc(argObj);\n  if (extObj) {\n    extObj.name = name;\n  }\n\n  extensions[name] = extObj;\n  return call('extension_added', extObj);\n};\n\n/**\n* This method sends back an array or a NodeList full of elements that\n* intersect the multi-select rubber-band-box on the currentLayer only.\n*\n* We brute-force `getIntersectionList` for browsers that do not support it (Firefox).\n*\n* Reference:\n* Firefox does not implement `getIntersectionList()`, see {@link https://bugzilla.mozilla.org/show_bug.cgi?id=501421}.\n* @function module:svgcanvas.SvgCanvas#getIntersectionList\n* @param {SVGRect} rect\n* @returns {Element[]|NodeList} Bbox elements\n*/\nconst getIntersectionList = this.getIntersectionList = function (rect) {\n  if (isNullish(rubberBox)) { return null; }\n\n  const parent = currentGroup || getCurrentDrawing().getCurrentLayer();\n\n  let rubberBBox;\n  if (!rect) {\n    rubberBBox = rubberBox.getBBox();\n    const bb = svgcontent.createSVGRect();\n\n    ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach((o) => {\n      bb[o] = rubberBBox[o] / currentZoom;\n    });\n    rubberBBox = bb;\n  } else {\n    rubberBBox = svgcontent.createSVGRect();\n    rubberBBox.x = rect.x;\n    rubberBBox.y = rect.y;\n    rubberBBox.width = rect.width;\n    rubberBBox.height = rect.height;\n  }\n\n  let resultList = null;\n  if (!isIE) {\n    if (typeof svgroot.getIntersectionList === 'function') {\n      // Offset the bbox of the rubber box by the offset of the svgcontent element.\n      rubberBBox.x += parseInt(svgcontent.getAttribute('x'));\n      rubberBBox.y += parseInt(svgcontent.getAttribute('y'));\n\n      resultList = svgroot.getIntersectionList(rubberBBox, parent);\n    }\n  }\n\n  if (isNullish(resultList) || typeof resultList.item !== 'function') {\n    resultList = [];\n\n    if (!curBBoxes.length) {\n      // Cache all bboxes\n      curBBoxes = getVisibleElementsAndBBoxes(parent);\n    }\n    let i = curBBoxes.length;\n    while (i--) {\n      if (!rubberBBox.width) { continue; }\n      if (rectsIntersect(rubberBBox, curBBoxes[i].bbox)) {\n        resultList.push(curBBoxes[i].elem);\n      }\n    }\n  }\n\n  // addToSelection expects an array, but it's ok to pass a NodeList\n  // because using square-bracket notation is allowed:\n  // https://www.w3.org/TR/DOM-Level-2-Core/ecma-script-binding.html\n  return resultList;\n};\n\nthis.getStrokedBBox = getStrokedBBoxDefaultVisible;\n\nthis.getVisibleElements = getVisibleElements;\n\n/**\n* @typedef {PlainObject} ElementAndBBox\n* @property {Element} elem - The element\n* @property {module:utilities.BBoxObject} bbox - The element's BBox as retrieved from `getStrokedBBoxDefaultVisible`\n*/\n\n/**\n* Get all elements that have a BBox (excludes `<defs>`, `<title>`, etc).\n* Note that 0-opacity, off-screen etc elements are still considered \"visible\"\n* for this function.\n* @function module:svgcanvas.SvgCanvas#getVisibleElementsAndBBoxes\n* @param {Element} parent - The parent DOM element to search within\n* @returns {ElementAndBBox[]} An array with objects that include:\n*/\nconst getVisibleElementsAndBBoxes = this.getVisibleElementsAndBBoxes = function (parent) {\n  if (!parent) {\n    parent = $(svgcontent).children(); // Prevent layers from being included\n  }\n  const contentElems = [];\n  $(parent).children().each(function (i, elem) {\n    if (elem.getBBox) {\n      contentElems.push({elem, bbox: getStrokedBBoxDefaultVisible([elem])});\n    }\n  });\n  return contentElems.reverse();\n};\n\n/**\n* Wrap an SVG element into a group element, mark the group as 'gsvg'.\n* @function module:svgcanvas.SvgCanvas#groupSvgElem\n* @param {Element} elem - SVG element to wrap\n* @returns {undefined}\n*/\nconst groupSvgElem = this.groupSvgElem = function (elem) {\n  const g = document.createElementNS(NS.SVG, 'g');\n  elem.replaceWith(g);\n  $(g).append(elem).data('gsvg', elem)[0].id = getNextId();\n};\n\n// Set scope for these functions\n\n// Object to contain editor event names and callback functions\nconst events = {};\n\ncanvas.call = call;\n/**\n * Array of what was changed (elements, layers)\n * @event module:svgcanvas.SvgCanvas#event:changed\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:selected\n * @type {Element[]}\n */\n/**\n * Array of selected elements\n * @event module:svgcanvas.SvgCanvas#event:transition\n * @type {Element[]}\n */\n/**\n * The Element is always `SVGGElement`?\n * If not `null`, will be the set current group element\n * @event module:svgcanvas.SvgCanvas#event:contextset\n * @type {null|Element}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:pointsAdded\n * @type {PlainObject}\n * @property {boolean} closedSubpath\n * @property {SVGCircleElement[]} grips Grips elements\n */\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomed\n * @type {PlainObject}\n * @property {Float} x\n * @property {Float} y\n * @property {Float} width\n * @property {Float} height\n * @property {0.5|2} factor\n * @see module:SVGEditor.BBoxObjectWithFactor\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:updateCanvas\n * @type {PlainObject}\n * @property {false} center\n * @property {module:math.XYObject} newCtr\n */\n/**\n * @typedef {PlainObject} module:svgcanvas.ExtensionInitResponsePlusName\n * @implements {module:svgcanvas.ExtensionInitResponse}\n * @property {string} name The extension's resolved ID (whether explicit or based on file name)\n */\n/**\n * Generalized extension object response of\n * [`init()`]{@link module:svgcanvas.ExtensionInitCallback}\n * along with the name of the extension.\n * @event module:svgcanvas.SvgCanvas#event:extension_added\n * @type {module:svgcanvas.ExtensionInitResponsePlusName|undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:extensions_added\n * @type {undefined}\n*/\n/**\n * @typedef {PlainObject} module:svgcanvas.Message\n * @property {Any} data The data\n * @property {string} origin The origin\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:message\n * @type {module:svgcanvas.Message}\n */\n/**\n * SVG canvas converted to string\n * @event module:svgcanvas.SvgCanvas#event:saved\n * @type {string}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:setnonce\n * @type {!(string|Integer)}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:unsetnonce\n * @type {undefined}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomDone\n * @type {undefined}\n*/\n/**\n * @event module:svgcanvas.SvgCanvas#event:cleared\n * @type {undefined}\n*/\n\n/**\n * @event module:svgcanvas.SvgCanvas#event:exported\n * @type {module:svgcanvas.ImageExportedResults}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:exportedPDF\n * @type {module:svgcanvas.PDFExportedResults}\n */\n/**\n * Creating a cover-all class until {@link https://github.com/jsdoc3/jsdoc/issues/1545} may be supported.\n * `undefined` may be returned by {@link module:svgcanvas.SvgCanvas#event:extension_added} if the extension's `init` returns `undefined` It is also the type for the following events \"zoomDone\", \"unsetnonce\", \"cleared\", and \"extensions_added\".\n * @event module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}\n */\n\n/**\n * The promise return, if present, resolves to `undefined`\n *  (`extension_added`, `exported`, `saved`)\n * @typedef {Promise|undefined} module:svgcanvas.EventHandlerReturn\n*/\n\n/**\n* @callback module:svgcanvas.EventHandler\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg\n* @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent\n* @returns {module:svgcanvas.EventHandlerReturn}\n*/\n\n/**\n* Attaches a callback function to an event.\n* @function module:svgcanvas.SvgCanvas#bind\n* @param {\"changed\"|\"contextset\"|\"selected\"|\"pointsAdded\"|\"extension_added\"|\"extensions_added\"|\"message\"|\"transition\"|\"zoomed\"|\"updateCanvas\"|\"zoomDone\"|\"saved\"|\"exported\"|\"exportedPDF\"|\"setnonce\"|\"unsetnonce\"|\"cleared\"} ev - String indicating the name of the event\n* @param {module:svgcanvas.EventHandler} f - The callback function to bind to the event\n* @returns {module:svgcanvas.EventHandler} The previous event\n*/\ncanvas.bind = function (ev, f) {\n  const old = events[ev];\n  events[ev] = f;\n  return old;\n};\n\n/**\n* Runs the SVG Document through the sanitizer and then updates its paths.\n* @function module:svgcanvas.SvgCanvas#prepareSvg\n* @param {XMLDocument} newDoc - The SVG DOM document\n* @returns {undefined}\n*/\nthis.prepareSvg = function (newDoc) {\n  this.sanitizeSvg(newDoc.documentElement);\n\n  // convert paths into absolute commands\n  const paths = [...newDoc.getElementsByTagNameNS(NS.SVG, 'path')];\n  paths.forEach((path) => {\n    path.setAttribute('d', pathActions.convertPath(path));\n    pathActions.fixEnd(path);\n  });\n};\n\n/**\n* Hack for Firefox bugs where text element features aren't updated or get\n* messed up. See issue 136 and issue 137.\n* This function clones the element and re-selects it.\n* @function module:svgcanvas~ffClone\n* @todo Test for this bug on load and add it to \"support\" object instead of\n* browser sniffing\n* @param {Element} elem - The (text) DOM element to clone\n* @returns {Element} Cloned element\n*/\nconst ffClone = function (elem) {\n  if (!isGecko()) { return elem; }\n  const clone = elem.cloneNode(true);\n  elem.before(clone);\n  elem.remove();\n  selectorManager.releaseSelector(elem);\n  selectedElements[0] = clone;\n  selectorManager.requestSelector(clone).showGrips(true);\n  return clone;\n};\n\n// `this.each` is deprecated, if any extension used this it can be recreated by doing this:\n// * @example $(canvas.getRootElem()).children().each(...)\n// * @function module:svgcanvas.SvgCanvas#each\n// this.each = function (cb) {\n//  $(svgroot).children().each(cb);\n// };\n\n/**\n* Removes any old rotations if present, prepends a new rotation at the\n* transformed center.\n* @function module:svgcanvas.SvgCanvas#setRotationAngle\n* @param {string|Float} val - The new rotation angle in degrees\n* @param {boolean} preventUndo - Indicates whether the action should be undoable or not\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRotationAngle = function (val, preventUndo) {\n  // ensure val is the proper type\n  val = parseFloat(val);\n  const elem = selectedElements[0];\n  const oldTransform = elem.getAttribute('transform');\n  const bbox = utilsGetBBox(elem);\n  const cx = bbox.x + bbox.width / 2, cy = bbox.y + bbox.height / 2;\n  const tlist = getTransformList(elem);\n\n  // only remove the real rotational transform if present (i.e. at index=0)\n  if (tlist.numberOfItems > 0) {\n    const xform = tlist.getItem(0);\n    if (xform.type === 4) {\n      tlist.removeItem(0);\n    }\n  }\n  // find Rnc and insert it\n  if (val !== 0) {\n    const center = transformPoint(cx, cy, transformListToTransform(tlist).matrix);\n    const Rnc = svgroot.createSVGTransform();\n    Rnc.setRotate(val, center.x, center.y);\n    if (tlist.numberOfItems) {\n      tlist.insertItemBefore(Rnc, 0);\n    } else {\n      tlist.appendItem(Rnc);\n    }\n  } else if (tlist.numberOfItems === 0) {\n    elem.removeAttribute('transform');\n  }\n\n  if (!preventUndo) {\n    // we need to undo it, then redo it so it can be undo-able! :)\n    // TODO: figure out how to make changes to transform list undo-able cross-browser?\n    const newTransform = elem.getAttribute('transform');\n    elem.setAttribute('transform', oldTransform);\n    changeSelectedAttribute('transform', newTransform, selectedElements);\n    call('changed', selectedElements);\n  }\n  // const pointGripContainer = getElem('pathpointgrip_container');\n  // if (elem.nodeName === 'path' && pointGripContainer) {\n  //   pathActions.setPointContainerTransform(elem.getAttribute('transform'));\n  // }\n  const selector = selectorManager.requestSelector(selectedElements[0]);\n  selector.resize();\n  Selector.updateGripCursors(val);\n};\n\n/**\n* Runs `recalculateDimensions` on the selected elements,\n* adding the changes to a single batch command.\n* @function module:svgcanvas.SvgCanvas#recalculateAllSelectedDimensions\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nconst recalculateAllSelectedDimensions = this.recalculateAllSelectedDimensions = function () {\n  const text = (currentResizeMode === 'none' ? 'position' : 'size');\n  const batchCmd = new BatchCommand(text);\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    // if (getRotationAngle(elem) && !hasMatrixTransform(getTransformList(elem))) { continue; }\n    const cmd = recalculateDimensions(elem);\n    if (cmd) {\n      batchCmd.addSubCommand(cmd);\n    }\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n * Debug tool to easily see the current matrix in the browser's console.\n * @function module:svgcanvas~logMatrix\n * @param {SVGMatrix} m The matrix\n * @returns {undefined}\n */\nconst logMatrix = function (m) {\n  console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console\n};\n\n// Root Current Transformation Matrix in user units\nlet rootSctm = null;\n\n/**\n* Group: Selection\n*/\n\n// TODO: do we need to worry about selectedBBoxes here?\n\n/**\n* Selects only the given elements, shortcut for `clearSelection(); addToSelection()`.\n* @function module:svgcanvas.SvgCanvas#selectOnly\n* @param {Element[]} elems - an array of DOM elements to be selected\n* @param {boolean} showGrips - Indicates whether the resize grips should be shown\n* @returns {undefined}\n*/\nconst selectOnly = this.selectOnly = function (elems, showGrips) {\n  clearSelection(true);\n  addToSelection(elems, showGrips);\n};\n\n// TODO: could use slice here to make this faster?\n// TODO: should the 'selected' handler\n\n/**\n* Removes elements from the selection.\n* @function module:svgcanvas.SvgCanvas#removeFromSelection\n* @param {Element[]} elemsToRemove - An array of elements to remove from selection\n* @returns {undefined}\n*/\n/* const removeFromSelection = */ this.removeFromSelection = function (elemsToRemove) {\n  if (isNullish(selectedElements[0])) { return; }\n  if (!elemsToRemove.length) { return; }\n\n  // find every element and remove it from our array copy\n  const newSelectedItems = [],\n    len = selectedElements.length;\n  for (let i = 0; i < len; ++i) {\n    const elem = selectedElements[i];\n    if (elem) {\n      // keep the item\n      if (!elemsToRemove.includes(elem)) {\n        newSelectedItems.push(elem);\n      } else { // remove the item and its selector\n        selectorManager.releaseSelector(elem);\n      }\n    }\n  }\n  // the copy becomes the master now\n  selectedElements = newSelectedItems;\n};\n\n/**\n* Clears the selection, then adds all elements in the current layer to the selection.\n* @function module:svgcanvas.SvgCanvas#selectAllInCurrentLayer\n* @returns {undefined}\n*/\nthis.selectAllInCurrentLayer = function () {\n  const currentLayer = getCurrentDrawing().getCurrentLayer();\n  if (currentLayer) {\n    currentMode = 'select';\n    selectOnly($(currentGroup || currentLayer).children());\n  }\n};\n\nlet drawnPath = null;\n\n// Mouse events\n(function () {\nconst freehand = {\n  minx: null,\n  miny: null,\n  maxx: null,\n  maxy: null\n};\nconst THRESHOLD_DIST = 0.8,\n  STEP_COUNT = 10;\nlet dAttr = null,\n  startX = null,\n  startY = null,\n  rStartX = null,\n  rStartY = null,\n  initBbox = {},\n  sumDistance = 0,\n  controllPoint2 = {x: 0, y: 0},\n  controllPoint1 = {x: 0, y: 0},\n  start = {x: 0, y: 0},\n  end = {x: 0, y: 0},\n  bSpline = {x: 0, y: 0},\n  nextPos = {x: 0, y: 0},\n  parameter,\n  nextParameter;\n\nconst getBsplinePoint = function (t) {\n  const spline = {x: 0, y: 0},\n    p0 = controllPoint2,\n    p1 = controllPoint1,\n    p2 = start,\n    p3 = end,\n    S = 1.0 / 6.0,\n    t2 = t * t,\n    t3 = t2 * t;\n\n  const m = [\n    [-1, 3, -3, 1],\n    [3, -6, 3, 0],\n    [-3, 0, 3, 0],\n    [1, 4, 1, 0]\n  ];\n\n  spline.x = S * (\n    (p0.x * m[0][0] + p1.x * m[0][1] + p2.x * m[0][2] + p3.x * m[0][3]) * t3 +\n      (p0.x * m[1][0] + p1.x * m[1][1] + p2.x * m[1][2] + p3.x * m[1][3]) * t2 +\n      (p0.x * m[2][0] + p1.x * m[2][1] + p2.x * m[2][2] + p3.x * m[2][3]) * t +\n      (p0.x * m[3][0] + p1.x * m[3][1] + p2.x * m[3][2] + p3.x * m[3][3])\n  );\n  spline.y = S * (\n    (p0.y * m[0][0] + p1.y * m[0][1] + p2.y * m[0][2] + p3.y * m[0][3]) * t3 +\n      (p0.y * m[1][0] + p1.y * m[1][1] + p2.y * m[1][2] + p3.y * m[1][3]) * t2 +\n      (p0.y * m[2][0] + p1.y * m[2][1] + p2.y * m[2][2] + p3.y * m[2][3]) * t +\n      (p0.y * m[3][0] + p1.y * m[3][1] + p2.y * m[3][2] + p3.y * m[3][3])\n  );\n\n  return {\n    x: spline.x,\n    y: spline.y\n  };\n};\n/**\n * Follows these conditions:\n * - When we are in a create mode, the element is added to the canvas but the\n *   action is not recorded until mousing up.\n * - When we are in select mode, select the element, remember the position\n *   and do nothing else.\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseDown\n * @returns {undefined}\n */\nconst mouseDown = function (evt) {\n  if (canvas.spaceKey || evt.button === 1) { return; }\n\n  const rightClick = evt.button === 2;\n\n  if (evt.altKey) { // duplicate when dragging\n    canvas.cloneSelectedElements(0, 0);\n  }\n\n  rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom;\n\n  evt.preventDefault();\n\n  if (rightClick) {\n    currentMode = 'select';\n    lastClickPoint = pt;\n  }\n\n  // This would seem to be unnecessary...\n  // if (!['select', 'resize'].includes(currentMode)) {\n  //   setGradient();\n  // }\n\n  let x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n  let mouseTarget = getMouseTarget(evt);\n\n  if (mouseTarget.tagName === 'a' && mouseTarget.childNodes.length === 1) {\n    mouseTarget = mouseTarget.firstChild;\n  }\n\n  // realX/y ignores grid-snap value\n  const realX = x;\n  rStartX = startX = x;\n  const realY = y;\n  rStartY = startY = y;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n    startX = snapToGrid(startX);\n    startY = snapToGrid(startY);\n  }\n\n  // if it is a selector grip, then it must be a single element selected,\n  // set the mouseTarget to that and update the mode to rotate/resize\n\n  if (mouseTarget === selectorManager.selectorParentGroup && !isNullish(selectedElements[0])) {\n    const grip = evt.target;\n    const griptype = elData(grip, 'type');\n    // rotating\n    if (griptype === 'rotate') {\n      currentMode = 'rotate';\n    // resizing\n    } else if (griptype === 'resize') {\n      currentMode = 'resize';\n      currentResizeMode = elData(grip, 'dir');\n    }\n    mouseTarget = selectedElements[0];\n  }\n\n  startTransform = mouseTarget.getAttribute('transform');\n\n  const tlist = getTransformList(mouseTarget);\n  switch (currentMode) {\n  case 'select':\n    started = true;\n    currentResizeMode = 'none';\n    if (rightClick) { started = false; }\n\n    if (mouseTarget !== svgroot) {\n      // if this element is not yet selected, clear selection and select it\n      if (!selectedElements.includes(mouseTarget)) {\n        // only clear selection if shift is not pressed (otherwise, add\n        // element to selection)\n        if (!evt.shiftKey) {\n          // No need to do the call here as it will be done on addToSelection\n          clearSelection(true);\n        }\n        addToSelection([mouseTarget]);\n        justSelected = mouseTarget;\n        pathActions.clear();\n      }\n      // else if it's a path, go into pathedit mode in mouseup\n\n      if (!rightClick) {\n        // insert a dummy transform so if the element(s) are moved it will have\n        // a transform to use for its translate\n        for (let i = 0; i < selectedElements.length; ++i) {\n          if (isNullish(selectedElements[i])) { continue; }\n          const slist = getTransformList(selectedElements[i]);\n          if (slist.numberOfItems) {\n            slist.insertItemBefore(svgroot.createSVGTransform(), 0);\n          } else {\n            slist.appendItem(svgroot.createSVGTransform());\n          }\n        }\n      }\n    } else if (!rightClick) {\n      clearSelection();\n      currentMode = 'multiselect';\n      if (isNullish(rubberBox)) {\n        rubberBox = selectorManager.getRubberBandBox();\n      }\n      rStartX *= currentZoom;\n      rStartY *= currentZoom;\n      // console.log('p',[evt.pageX, evt.pageY]);\n      // console.log('c',[evt.clientX, evt.clientY]);\n      // console.log('o',[evt.offsetX, evt.offsetY]);\n      // console.log('s',[startX, startY]);\n\n      assignAttributes(rubberBox, {\n        x: rStartX,\n        y: rStartY,\n        width: 0,\n        height: 0,\n        display: 'inline'\n      }, 100);\n    }\n    break;\n  case 'zoom':\n    started = true;\n    if (isNullish(rubberBox)) {\n      rubberBox = selectorManager.getRubberBandBox();\n    }\n    assignAttributes(rubberBox, {\n      x: realX * currentZoom,\n      y: realX * currentZoom,\n      width: 0,\n      height: 0,\n      display: 'inline'\n    }, 100);\n    break;\n  case 'resize': {\n    started = true;\n    startX = x;\n    startY = y;\n\n    // Getting the BBox from the selection box, since we know we\n    // want to orient around it\n    initBbox = utilsGetBBox($('#selectedBox0')[0]);\n    const bb = {};\n    $.each(initBbox, function (key, val) {\n      bb[key] = val / currentZoom;\n    });\n    initBbox = bb;\n\n    // append three dummy transforms to the tlist so that\n    // we can translate,scale,translate in mousemove\n    const pos = getRotationAngle(mouseTarget) ? 1 : 0;\n\n    if (hasMatrixTransform(tlist)) {\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n      tlist.insertItemBefore(svgroot.createSVGTransform(), pos);\n    } else {\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n      tlist.appendItem(svgroot.createSVGTransform());\n\n      if (supportsNonScalingStroke()) {\n        // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):\n        // https://code.google.com/p/svg-edit/issues/detail?id=904\n        // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625\n        // TODO: Remove this workaround once vendor fixes the issue\n        const iswebkit = isWebkit();\n\n        let delayedStroke;\n        if (iswebkit) {\n          delayedStroke = function (ele) {\n            const _stroke = ele.getAttribute('stroke');\n            ele.removeAttribute('stroke');\n            // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker\n            if (_stroke !== null) setTimeout(function () { ele.setAttribute('stroke', _stroke); }, 0);\n          };\n        }\n        mouseTarget.style.vectorEffect = 'non-scaling-stroke';\n        if (iswebkit) { delayedStroke(mouseTarget); }\n\n        const all = mouseTarget.getElementsByTagName('*'),\n          len = all.length;\n        for (let i = 0; i < len; i++) {\n          if (!all[i].style) { // mathML\n            continue;\n          }\n          all[i].style.vectorEffect = 'non-scaling-stroke';\n          if (iswebkit) { delayedStroke(all[i]); }\n        }\n      }\n    }\n    break;\n  } case 'fhellipse':\n  case 'fhrect':\n  case 'fhpath':\n    start.x = realX;\n    start.y = realY;\n    started = true;\n    dAttr = realX + ',' + realY + ' ';\n    // Commented out as doing nothing now:\n    // strokeW = parseFloat(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'polyline',\n      curStyles: true,\n      attr: {\n        points: dAttr,\n        id: getNextId(),\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        'stroke-linecap': 'round',\n        style: 'pointer-events:none'\n      }\n    });\n    freehand.minx = realX;\n    freehand.maxx = realX;\n    freehand.miny = realY;\n    freehand.maxy = realY;\n    break;\n  case 'image': {\n    started = true;\n    const newImage = addSVGElementFromJson({\n      element: 'image',\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:inherit'\n      }\n    });\n    setHref(newImage, lastGoodImgUrl);\n    preventClickDefault(newImage);\n    break;\n  } case 'square':\n    // FIXME: once we create the rect, we lose information that this was a square\n    // (for resizing purposes this could be important)\n    // Fallthrough\n  case 'rect':\n    started = true;\n    startX = x;\n    startY = y;\n    addSVGElementFromJson({\n      element: 'rect',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        width: 0,\n        height: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'line': {\n    started = true;\n    const strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;\n    addSVGElementFromJson({\n      element: 'line',\n      curStyles: true,\n      attr: {\n        x1: x,\n        y1: y,\n        x2: x,\n        y2: y,\n        id: getNextId(),\n        stroke: curShape.stroke,\n        'stroke-width': strokeW,\n        'stroke-dasharray': curShape.stroke_dasharray,\n        'stroke-linejoin': curShape.stroke_linejoin,\n        'stroke-linecap': curShape.stroke_linecap,\n        'stroke-opacity': curShape.stroke_opacity,\n        fill: 'none',\n        opacity: curShape.opacity / 2,\n        style: 'pointer-events:none'\n      }\n    });\n    break;\n  } case 'circle':\n    started = true;\n    addSVGElementFromJson({\n      element: 'circle',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        r: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'ellipse':\n    started = true;\n    addSVGElementFromJson({\n      element: 'ellipse',\n      curStyles: true,\n      attr: {\n        cx: x,\n        cy: y,\n        rx: 0,\n        ry: 0,\n        id: getNextId(),\n        opacity: curShape.opacity / 2\n      }\n    });\n    break;\n  case 'text':\n    started = true;\n    /* const newText = */ addSVGElementFromJson({\n      element: 'text',\n      curStyles: true,\n      attr: {\n        x,\n        y,\n        id: getNextId(),\n        fill: curText.fill,\n        'stroke-width': curText.stroke_width,\n        'font-size': curText.font_size,\n        'font-family': curText.font_family,\n        'text-anchor': 'middle',\n        'xml:space': 'preserve',\n        opacity: curShape.opacity\n      }\n    });\n    // newText.textContent = 'text';\n    break;\n  case 'path':\n    // Fall through\n  case 'pathedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    pathActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'textedit':\n    startX *= currentZoom;\n    startY *= currentZoom;\n    textActions.mouseDown(evt, mouseTarget, startX, startY);\n    started = true;\n    break;\n  case 'rotate':\n    started = true;\n    // we are starting an undoable change (a drag-rotation)\n    canvas.undoMgr.beginUndoableChange('transform', selectedElements);\n    break;\n  default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n   * The main (left) mouse button is held down on the canvas area\n   * @event module:svgcanvas.SvgCanvas#event:ext-mouseDown\n   * @type {PlainObject}\n   * @property {MouseEvent} event The event object\n   * @property {Float} start_x x coordinate on canvas\n   * @property {Float} start_y y coordinate on canvas\n   * @property {Element[]} selectedElements An array of the selected Elements\n  */\n  const extResult = runExtensions('mouseDown', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseDown} */ {\n    event: evt,\n    start_x: startX,\n    start_y: startY,\n    selectedElements\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r && r.started) {\n      started = true;\n    }\n  });\n};\n\n// in this function we do not record any state changes yet (but we do update\n// any elements that are still being created, moved or resized on the canvas)\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:transition\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseMove\n * @returns {undefined}\n */\nconst mouseMove = function (evt) {\n  if (!started) { return; }\n  if (evt.button === 1 || canvas.spaceKey) { return; }\n\n  let i, xya, c, cx, cy, dx, dy, len, angle, box,\n    selected = selectedElements[0];\n  const\n    pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    shape = getElem(getId());\n\n  let realX = mouseX / currentZoom;\n  let x = realX;\n  let realY = mouseY / currentZoom;\n  let y = realY;\n\n  if (curConfig.gridSnapping) {\n    x = snapToGrid(x);\n    y = snapToGrid(y);\n  }\n\n  evt.preventDefault();\n  let tlist;\n  switch (currentMode) {\n  case 'select': {\n    // we temporarily use a translate on the element(s) being dragged\n    // this transform is removed upon mousing up and the element is\n    // relocated to the new location\n    if (selectedElements[0] !== null) {\n      dx = x - startX;\n      dy = y - startY;\n\n      if (curConfig.gridSnapping) {\n        dx = snapToGrid(dx);\n        dy = snapToGrid(dy);\n      }\n\n      /*\n      // Commenting out as currently has no effect\n      if (evt.shiftKey) {\n        xya = snapToAngle(startX, startY, x, y);\n        ({x, y} = xya);\n      }\n      */\n\n      if (dx !== 0 || dy !== 0) {\n        len = selectedElements.length;\n        for (i = 0; i < len; ++i) {\n          selected = selectedElements[i];\n          if (isNullish(selected)) { break; }\n          // if (i === 0) {\n          //   const box = utilsGetBBox(selected);\n          //     selectedBBoxes[i].x = box.x + dx;\n          //     selectedBBoxes[i].y = box.y + dy;\n          // }\n\n          // update the dummy transform in our transform list\n          // to be a translate\n          const xform = svgroot.createSVGTransform();\n          tlist = getTransformList(selected);\n          // Note that if Webkit and there's no ID for this\n          // element, the dummy transform may have gotten lost.\n          // This results in unexpected behaviour\n\n          xform.setTranslate(dx, dy);\n          if (tlist.numberOfItems) {\n            tlist.replaceItem(xform, 0);\n          } else {\n            tlist.appendItem(xform);\n          }\n\n          // update our internal bbox that we're tracking while dragging\n          selectorManager.requestSelector(selected).resize();\n        }\n\n        call('transition', selectedElements);\n      }\n    }\n    break;\n  } case 'multiselect': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY)\n    }, 100);\n\n    // for each selected:\n    // - if newList contains selected, do nothing\n    // - if newList doesn't contain selected, remove it from selected\n    // - for any newList that was not in selectedElements, add it to selected\n    const elemsToRemove = selectedElements.slice(), elemsToAdd = [],\n      newList = getIntersectionList();\n\n    // For every element in the intersection, add if not present in selectedElements.\n    len = newList.length;\n    for (i = 0; i < len; ++i) {\n      const intElem = newList[i];\n      // Found an element that was not selected before, so we should add it.\n      if (!selectedElements.includes(intElem)) {\n        elemsToAdd.push(intElem);\n      }\n      // Found an element that was already selected, so we shouldn't remove it.\n      const foundInd = elemsToRemove.indexOf(intElem);\n      if (foundInd !== -1) {\n        elemsToRemove.splice(foundInd, 1);\n      }\n    }\n\n    if (elemsToRemove.length > 0) {\n      canvas.removeFromSelection(elemsToRemove);\n    }\n\n    if (elemsToAdd.length > 0) {\n      canvas.addToSelection(elemsToAdd);\n    }\n\n    break;\n  } case 'resize': {\n    // we track the resize bounding box and translate/scale the selected element\n    // while the mouse is down, when mouse goes up, we use this to recalculate\n    // the shape's coordinates\n    tlist = getTransformList(selected);\n    const hasMatrix = hasMatrixTransform(tlist);\n    box = hasMatrix ? initBbox : utilsGetBBox(selected);\n    let left = box.x,\n      top = box.y,\n      {width, height} = box;\n    dx = (x - startX);\n    dy = (y - startY);\n\n    if (curConfig.gridSnapping) {\n      dx = snapToGrid(dx);\n      dy = snapToGrid(dy);\n      height = snapToGrid(height);\n      width = snapToGrid(width);\n    }\n\n    // if rotated, adjust the dx,dy values\n    angle = getRotationAngle(selected);\n    if (angle) {\n      const r = Math.sqrt(dx * dx + dy * dy),\n        theta = Math.atan2(dy, dx) - angle * Math.PI / 180.0;\n      dx = r * Math.cos(theta);\n      dy = r * Math.sin(theta);\n    }\n\n    // if not stretching in y direction, set dy to 0\n    // if not stretching in x direction, set dx to 0\n    if (!currentResizeMode.includes('n') && !currentResizeMode.includes('s')) {\n      dy = 0;\n    }\n    if (!currentResizeMode.includes('e') && !currentResizeMode.includes('w')) {\n      dx = 0;\n    }\n\n    let // ts = null,\n      tx = 0, ty = 0,\n      sy = height ? (height + dy) / height : 1,\n      sx = width ? (width + dx) / width : 1;\n    // if we are dragging on the north side, then adjust the scale factor and ty\n    if (currentResizeMode.includes('n')) {\n      sy = height ? (height - dy) / height : 1;\n      ty = height;\n    }\n\n    // if we dragging on the east side, then adjust the scale factor and tx\n    if (currentResizeMode.includes('w')) {\n      sx = width ? (width - dx) / width : 1;\n      tx = width;\n    }\n\n    // update the transform list with translate,scale,translate\n    const translateOrigin = svgroot.createSVGTransform(),\n      scale = svgroot.createSVGTransform(),\n      translateBack = svgroot.createSVGTransform();\n\n    if (curConfig.gridSnapping) {\n      left = snapToGrid(left);\n      tx = snapToGrid(tx);\n      top = snapToGrid(top);\n      ty = snapToGrid(ty);\n    }\n\n    translateOrigin.setTranslate(-(left + tx), -(top + ty));\n    if (evt.shiftKey) {\n      if (sx === 1) {\n        sx = sy;\n      } else { sy = sx; }\n    }\n    scale.setScale(sx, sy);\n\n    translateBack.setTranslate(left + tx, top + ty);\n    if (hasMatrix) {\n      const diff = angle ? 1 : 0;\n      tlist.replaceItem(translateOrigin, 2 + diff);\n      tlist.replaceItem(scale, 1 + diff);\n      tlist.replaceItem(translateBack, Number(diff));\n    } else {\n      const N = tlist.numberOfItems;\n      tlist.replaceItem(translateBack, N - 3);\n      tlist.replaceItem(scale, N - 2);\n      tlist.replaceItem(translateOrigin, N - 1);\n    }\n\n    selectorManager.requestSelector(selected).resize();\n\n    call('transition', selectedElements);\n\n    break;\n  } case 'zoom': {\n    realX *= currentZoom;\n    realY *= currentZoom;\n    assignAttributes(rubberBox, {\n      x: Math.min(rStartX * currentZoom, realX),\n      y: Math.min(rStartY * currentZoom, realY),\n      width: Math.abs(realX - rStartX * currentZoom),\n      height: Math.abs(realY - rStartY * currentZoom)\n    }, 100);\n    break;\n  } case 'text': {\n    assignAttributes(shape, {\n      x,\n      y\n    }, 1000);\n    break;\n  } case 'line': {\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n    }\n\n    let x2 = x;\n    let y2 = y;\n\n    if (evt.shiftKey) {\n      xya = snapToAngle(startX, startY, x2, y2);\n      x2 = xya.x;\n      y2 = xya.y;\n    }\n\n    shape.setAttribute('x2', x2);\n    shape.setAttribute('y2', y2);\n    break;\n  } case 'foreignObject':\n    // fall through\n  case 'square':\n    // fall through\n  case 'rect':\n    // fall through\n  case 'image': {\n    const square = (currentMode === 'square') || evt.shiftKey;\n    let\n      w = Math.abs(x - startX),\n      h = Math.abs(y - startY);\n    let newX, newY;\n    if (square) {\n      w = h = Math.max(w, h);\n      newX = startX < x ? startX : startX - w;\n      newY = startY < y ? startY : startY - h;\n    } else {\n      newX = Math.min(startX, x);\n      newY = Math.min(startY, y);\n    }\n\n    if (curConfig.gridSnapping) {\n      w = snapToGrid(w);\n      h = snapToGrid(h);\n      newX = snapToGrid(newX);\n      newY = snapToGrid(newY);\n    }\n\n    assignAttributes(shape, {\n      width: w,\n      height: h,\n      x: newX,\n      y: newY\n    }, 1000);\n\n    break;\n  } case 'circle': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    let rad = Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy));\n    if (curConfig.gridSnapping) {\n      rad = snapToGrid(rad);\n    }\n    shape.setAttribute('r', rad);\n    break;\n  } case 'ellipse': {\n    c = $(shape).attr(['cx', 'cy']);\n    ({cx, cy} = c);\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      cx = snapToGrid(cx);\n      y = snapToGrid(y);\n      cy = snapToGrid(cy);\n    }\n    shape.setAttribute('rx', Math.abs(x - cx));\n    const ry = Math.abs(evt.shiftKey ? (x - cx) : (y - cy));\n    shape.setAttribute('ry', ry);\n    break;\n  }\n  case 'fhellipse':\n  case 'fhrect': {\n    freehand.minx = Math.min(realX, freehand.minx);\n    freehand.maxx = Math.max(realX, freehand.maxx);\n    freehand.miny = Math.min(realY, freehand.miny);\n    freehand.maxy = Math.max(realY, freehand.maxy);\n  }\n  // Fallthrough\n  case 'fhpath': {\n    // dAttr += + realX + ',' + realY + ' ';\n    // shape.setAttribute('points', dAttr);\n    end.x = realX; end.y = realY;\n    if (controllPoint2.x && controllPoint2.y) {\n      for (i = 0; i < STEP_COUNT - 1; i++) {\n        parameter = i / STEP_COUNT;\n        nextParameter = (i + 1) / STEP_COUNT;\n        bSpline = getBsplinePoint(nextParameter);\n        nextPos = bSpline;\n        bSpline = getBsplinePoint(parameter);\n        sumDistance += Math.sqrt((nextPos.x - bSpline.x) * (nextPos.x - bSpline.x) + (nextPos.y - bSpline.y) * (nextPos.y - bSpline.y));\n        if (sumDistance > THRESHOLD_DIST) {\n          sumDistance -= THRESHOLD_DIST;\n\n          // Faster than completely re-writing the points attribute.\n          const point = svgcontent.createSVGPoint();\n          point.x = bSpline.x;\n          point.y = bSpline.y;\n          shape.points.appendItem(point);\n        }\n      }\n    }\n    controllPoint2 = {x: controllPoint1.x, y: controllPoint1.y};\n    controllPoint1 = {x: start.x, y: start.y};\n    start = {x: end.x, y: end.y};\n    break;\n  // update path stretch line coordinates\n} case 'path':\n  // fall through\n  case 'pathedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n\n    if (curConfig.gridSnapping) {\n      x = snapToGrid(x);\n      y = snapToGrid(y);\n      startX = snapToGrid(startX);\n      startY = snapToGrid(startY);\n    }\n    if (evt.shiftKey) {\n      const {path} = pathModule;\n      let x1, y1;\n      if (path) {\n        x1 = path.dragging ? path.dragging[0] : startX;\n        y1 = path.dragging ? path.dragging[1] : startY;\n      } else {\n        x1 = startX;\n        y1 = startY;\n      }\n      xya = snapToAngle(x1, y1, x, y);\n      ({x, y} = xya);\n    }\n\n    if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n      realX *= currentZoom;\n      realY *= currentZoom;\n      assignAttributes(rubberBox, {\n        x: Math.min(rStartX * currentZoom, realX),\n        y: Math.min(rStartY * currentZoom, realY),\n        width: Math.abs(realX - rStartX * currentZoom),\n        height: Math.abs(realY - rStartY * currentZoom)\n      }, 100);\n    }\n    pathActions.mouseMove(x, y);\n\n    break;\n  } case 'textedit': {\n    x *= currentZoom;\n    y *= currentZoom;\n    // if (rubberBox && rubberBox.getAttribute('display') !== 'none') {\n    //   assignAttributes(rubberBox, {\n    //     x: Math.min(startX, x),\n    //     y: Math.min(startY, y),\n    //     width: Math.abs(x - startX),\n    //     height: Math.abs(y - startY)\n    //   }, 100);\n    // }\n\n    textActions.mouseMove(mouseX, mouseY);\n\n    break;\n  } case 'rotate': {\n    box = utilsGetBBox(selected);\n    cx = box.x + box.width / 2;\n    cy = box.y + box.height / 2;\n    const m = getMatrix(selected),\n      center = transformPoint(cx, cy, m);\n    cx = center.x;\n    cy = center.y;\n    angle = ((Math.atan2(cy - y, cx - x) * (180 / Math.PI)) - 90) % 360;\n    if (curConfig.gridSnapping) {\n      angle = snapToGrid(angle);\n    }\n    if (evt.shiftKey) { // restrict rotations to nice angles (WRS)\n      const snap = 45;\n      angle = Math.round(angle / snap) * snap;\n    }\n\n    canvas.setRotationAngle(angle < -180 ? (360 + angle) : angle, true);\n    call('transition', selectedElements);\n    break;\n  } default:\n    break;\n  }\n\n  /**\n  * The mouse has moved on the canvas area\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseMove\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  * @property {Element} selected Refers to the first selected element\n  */\n  runExtensions('mouseMove', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseMove} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY,\n    selected\n  });\n}; // mouseMove()\n\n// - in create mode, the element's opacity is set properly, we create an InsertElementCommand\n// and store it on the Undo stack\n// - in move/resize mode, the element's attributes which were affected by the move/resize are\n// identified, a ChangeElementCommand is created and stored on the stack for those attrs\n// this is done in when we recalculate the selected dimensions()\n/**\n *\n * @param {MouseEvent} evt\n * @fires module:svgcanvas.SvgCanvas#event:zoomed\n * @fires module:svgcanvas.SvgCanvas#event:changed\n * @fires module:svgcanvas.SvgCanvas#event:ext-mouseUp\n * @returns {undefined}\n */\nconst mouseUp = function (evt) {\n  if (evt.button === 2) { return; }\n  const tempJustSelected = justSelected;\n  justSelected = null;\n  if (!started) { return; }\n  const pt = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = pt.x * currentZoom,\n    mouseY = pt.y * currentZoom,\n    x = mouseX / currentZoom,\n    y = mouseY / currentZoom;\n\n  let element = getElem(getId());\n  let keep = false;\n\n  const realX = x;\n  const realY = y;\n\n  // TODO: Make true when in multi-unit mode\n  const useUnit = false; // (curConfig.baseUnit !== 'px');\n  started = false;\n  let attrs, t;\n  switch (currentMode) {\n  // intentionally fall-through to select here\n  case 'resize':\n  case 'multiselect':\n    if (!isNullish(rubberBox)) {\n      rubberBox.setAttribute('display', 'none');\n      curBBoxes = [];\n    }\n    currentMode = 'select';\n    // Fallthrough\n  case 'select':\n    if (!isNullish(selectedElements[0])) {\n      // if we only have one selected element\n      if (isNullish(selectedElements[1])) {\n        // set our current stroke/fill properties to the element's\n        const selected = selectedElements[0];\n        switch (selected.tagName) {\n        case 'g':\n        case 'use':\n        case 'image':\n        case 'foreignObject':\n          break;\n        default:\n          curProperties.fill = selected.getAttribute('fill');\n          curProperties.fill_opacity = selected.getAttribute('fill-opacity');\n          curProperties.stroke = selected.getAttribute('stroke');\n          curProperties.stroke_opacity = selected.getAttribute('stroke-opacity');\n          curProperties.stroke_width = selected.getAttribute('stroke-width');\n          curProperties.stroke_dasharray = selected.getAttribute('stroke-dasharray');\n          curProperties.stroke_linejoin = selected.getAttribute('stroke-linejoin');\n          curProperties.stroke_linecap = selected.getAttribute('stroke-linecap');\n        }\n\n        if (selected.tagName === 'text') {\n          curText.font_size = selected.getAttribute('font-size');\n          curText.font_family = selected.getAttribute('font-family');\n        }\n        selectorManager.requestSelector(selected).showGrips(true);\n\n        // This shouldn't be necessary as it was done on mouseDown...\n        // call('selected', [selected]);\n      }\n      // always recalculate dimensions to strip off stray identity transforms\n      recalculateAllSelectedDimensions();\n      // if it was being dragged/resized\n      if (realX !== rStartX || realY !== rStartY) {\n        const len = selectedElements.length;\n        for (let i = 0; i < len; ++i) {\n          if (isNullish(selectedElements[i])) { break; }\n          if (!selectedElements[i].firstChild) {\n            // Not needed for groups (incorrectly resizes elems), possibly not needed at all?\n            selectorManager.requestSelector(selectedElements[i]).resize();\n          }\n        }\n      // no change in position/size, so maybe we should move to pathedit\n      } else {\n        t = evt.target;\n        if (selectedElements[0].nodeName === 'path' && isNullish(selectedElements[1])) {\n          pathActions.select(selectedElements[0]);\n        // if it was a path\n        // else, if it was selected and this is a shift-click, remove it from selection\n        } else if (evt.shiftKey) {\n          if (tempJustSelected !== t) {\n            canvas.removeFromSelection([t]);\n          }\n        }\n      } // no change in mouse position\n\n      // Remove non-scaling stroke\n      if (supportsNonScalingStroke()) {\n        const elem = selectedElements[0];\n        if (elem) {\n          elem.removeAttribute('style');\n          walkTree(elem, function (el) {\n            el.removeAttribute('style');\n          });\n        }\n      }\n    }\n    return;\n  case 'zoom': {\n    if (!isNullish(rubberBox)) {\n      rubberBox.setAttribute('display', 'none');\n    }\n    const factor = evt.shiftKey ? 0.5 : 2;\n    call('zoomed', {\n      x: Math.min(rStartX, realX),\n      y: Math.min(rStartY, realY),\n      width: Math.abs(realX - rStartX),\n      height: Math.abs(realY - rStartY),\n      factor\n    });\n    return;\n  } case 'fhpath': {\n    // Check that the path contains at least 2 points; a degenerate one-point path\n    // causes problems.\n    // Webkit ignores how we set the points attribute with commas and uses space\n    // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870\n    sumDistance = 0;\n    controllPoint2 = {x: 0, y: 0};\n    controllPoint1 = {x: 0, y: 0};\n    start = {x: 0, y: 0};\n    end = {x: 0, y: 0};\n    const coords = element.getAttribute('points');\n    const commaIndex = coords.indexOf(',');\n    if (commaIndex >= 0) {\n      keep = coords.indexOf(',', commaIndex + 1) >= 0;\n    } else {\n      keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;\n    }\n    if (keep) {\n      element = pathActions.smoothPolylineIntoPath(element);\n    }\n    break;\n  } case 'line':\n    attrs = $(element).attr(['x1', 'x2', 'y1', 'y2']);\n    keep = (attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2);\n    break;\n  case 'foreignObject':\n  case 'square':\n  case 'rect':\n  case 'image':\n    attrs = $(element).attr(['width', 'height']);\n    // Image should be kept regardless of size (use inherit dimensions later)\n    keep = (attrs.width || attrs.height) || currentMode === 'image';\n    break;\n  case 'circle':\n    keep = (element.getAttribute('r') !== '0');\n    break;\n  case 'ellipse':\n    attrs = $(element).attr(['rx', 'ry']);\n    keep = (attrs.rx || attrs.ry);\n    break;\n  case 'fhellipse':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'ellipse',\n        curStyles: true,\n        attr: {\n          cx: (freehand.minx + freehand.maxx) / 2,\n          cy: (freehand.miny + freehand.maxy) / 2,\n          rx: (freehand.maxx - freehand.minx) / 2,\n          ry: (freehand.maxy - freehand.miny) / 2,\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'fhrect':\n    if ((freehand.maxx - freehand.minx) > 0 &&\n      (freehand.maxy - freehand.miny) > 0) {\n      element = addSVGElementFromJson({\n        element: 'rect',\n        curStyles: true,\n        attr: {\n          x: freehand.minx,\n          y: freehand.miny,\n          width: (freehand.maxx - freehand.minx),\n          height: (freehand.maxy - freehand.miny),\n          id: getId()\n        }\n      });\n      call('changed', [element]);\n      keep = true;\n    }\n    break;\n  case 'text':\n    keep = true;\n    selectOnly([element]);\n    textActions.start(element);\n    break;\n  case 'path': {\n    // set element to null here so that it is not removed nor finalized\n    element = null;\n    // continue to be set to true so that mouseMove happens\n    started = true;\n\n    const res = pathActions.mouseUp(evt, element, mouseX, mouseY);\n    ({element} = res);\n    ({keep} = res);\n    break;\n  } case 'pathedit':\n    keep = true;\n    element = null;\n    pathActions.mouseUp(evt);\n    break;\n  case 'textedit':\n    keep = false;\n    element = null;\n    textActions.mouseUp(evt, mouseX, mouseY);\n    break;\n  case 'rotate': {\n    keep = true;\n    element = null;\n    currentMode = 'select';\n    const batchCmd = canvas.undoMgr.finishUndoableChange();\n    if (!batchCmd.isEmpty()) {\n      addCommandToHistory(batchCmd);\n    }\n    // perform recalculation to weed out any stray identity transforms that might get stuck\n    recalculateAllSelectedDimensions();\n    call('changed', selectedElements);\n    break;\n  } default:\n    // This could occur in an extension\n    break;\n  }\n\n  /**\n  * The main (left) mouse button is released (anywhere)\n  * @event module:svgcanvas.SvgCanvas#event:ext-mouseUp\n  * @type {PlainObject}\n  * @property {MouseEvent} event The event object\n  * @property {Float} mouse_x x coordinate on canvas\n  * @property {Float} mouse_y y coordinate on canvas\n  */\n  const extResult = runExtensions('mouseUp', /** @type {module:svgcanvas.SvgCanvas#event:ext-mouseUp} */ {\n    event: evt,\n    mouse_x: mouseX,\n    mouse_y: mouseY\n  }, true);\n\n  $.each(extResult, function (i, r) {\n    if (r) {\n      keep = r.keep || keep;\n      ({element} = r);\n      started = r.started || started;\n    }\n  });\n\n  if (!keep && !isNullish(element)) {\n    getCurrentDrawing().releaseId(getId());\n    element.remove();\n    element = null;\n\n    t = evt.target;\n\n    // if this element is in a group, go up until we reach the top-level group\n    // just below the layer groups\n    // TODO: once we implement links, we also would have to check for <a> elements\n    while (t && t.parentNode && t.parentNode.parentNode && t.parentNode.parentNode.tagName === 'g') {\n      t = t.parentNode;\n    }\n    // if we are not in the middle of creating a path, and we've clicked on some shape,\n    // then go to Select mode.\n    // WebKit returns <div> when the canvas is clicked, Firefox/Opera return <svg>\n    if ((currentMode !== 'path' || !drawnPath) &&\n      t && t.parentNode &&\n      t.parentNode.id !== 'selectorParentGroup' &&\n      t.id !== 'svgcanvas' && t.id !== 'svgroot'\n    ) {\n      // switch into \"select\" mode if we've clicked on an element\n      canvas.setMode('select');\n      selectOnly([t], true);\n    }\n  } else if (!isNullish(element)) {\n    /**\n    * @name module:svgcanvas.SvgCanvas#addedNew\n    * @type {boolean}\n    */\n    canvas.addedNew = true;\n\n    if (useUnit) { convertAttrs(element); }\n\n    let aniDur = 0.2;\n    let cAni;\n    if (opacAni.beginElement && parseFloat(element.getAttribute('opacity')) !== curShape.opacity) {\n      cAni = $(opacAni).clone().attr({\n        to: curShape.opacity,\n        dur: aniDur\n      }).appendTo(element);\n      try {\n        // Fails in FF4 on foreignObject\n        cAni[0].beginElement();\n      } catch (e) {}\n    } else {\n      aniDur = 0;\n    }\n\n    // Ideally this would be done on the endEvent of the animation,\n    // but that doesn't seem to be supported in Webkit\n    setTimeout(function () {\n      if (cAni) { cAni.remove(); }\n      element.setAttribute('opacity', curShape.opacity);\n      element.setAttribute('style', 'pointer-events:inherit');\n      cleanupElement(element);\n      if (currentMode === 'path') {\n        pathActions.toEditMode(element);\n      } else if (curConfig.selectNew) {\n        selectOnly([element], true);\n      }\n      // we create the insert command that is stored on the stack\n      // undo means to call cmd.unapply(), redo means to call cmd.apply()\n      addCommandToHistory(new InsertElementCommand(element));\n\n      call('changed', [element]);\n    }, aniDur * 1000);\n  }\n\n  startTransform = null;\n};\n\nconst dblClick = function (evt) {\n  const evtTarget = evt.target;\n  const parent = evtTarget.parentNode;\n\n  // Do nothing if already in current group\n  if (parent === currentGroup) { return; }\n\n  let mouseTarget = getMouseTarget(evt);\n  const {tagName} = mouseTarget;\n\n  if (tagName === 'text' && currentMode !== 'textedit') {\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n    textActions.select(mouseTarget, pt.x, pt.y);\n  }\n\n  if ((tagName === 'g' || tagName === 'a') &&\n    getRotationAngle(mouseTarget)\n  ) {\n    // TODO: Allow method of in-group editing without having to do\n    // this (similar to editing rotated paths)\n\n    // Ungroup and regroup\n    pushGroupProperties(mouseTarget);\n    mouseTarget = selectedElements[0];\n    clearSelection(true);\n  }\n  // Reset context\n  if (currentGroup) {\n    draw.leaveContext();\n  }\n\n  if ((parent.tagName !== 'g' && parent.tagName !== 'a') ||\n    parent === getCurrentDrawing().getCurrentLayer() ||\n    mouseTarget === selectorManager.selectorParentGroup\n  ) {\n    // Escape from in-group edit\n    return;\n  }\n  draw.setContext(mouseTarget);\n};\n\n// prevent links from being followed in the canvas\nconst handleLinkInCanvas = function (e) {\n  e.preventDefault();\n  return false;\n};\n\n// Added mouseup to the container here.\n// TODO(codedread): Figure out why after the Closure compiler, the window mouseup is ignored.\n$(container).mousedown(mouseDown).mousemove(mouseMove).click(handleLinkInCanvas).dblclick(dblClick).mouseup(mouseUp);\n// $(window).mouseup(mouseUp);\n\n// TODO(rafaelcastrocouto): User preference for shift key and zoom factor\n$(container).bind(\n  'mousewheel DOMMouseScroll',\n  /**\n   * @param {Event} e\n   * @fires module:svgcanvas.SvgCanvas#event:updateCanvas\n   * @fires module:svgcanvas.SvgCanvas#event:zoomDone\n   * @returns {undefined}\n   */\n  function (e) {\n    if (!e.shiftKey) { return; }\n\n    e.preventDefault();\n    const evt = e.originalEvent;\n\n    rootSctm = $('#svgcontent g')[0].getScreenCTM().inverse();\n\n    const workarea = $('#workarea');\n    const scrbar = 15;\n    const rulerwidth = curConfig.showRulers ? 16 : 0;\n\n    // mouse relative to content area in content pixels\n    const pt = transformPoint(evt.pageX, evt.pageY, rootSctm);\n\n    // full work area width in screen pixels\n    const editorFullW = workarea.width();\n    const editorFullH = workarea.height();\n\n    // work area width minus scroll and ruler in screen pixels\n    const editorW = editorFullW - scrbar - rulerwidth;\n    const editorH = editorFullH - scrbar - rulerwidth;\n\n    // work area width in content pixels\n    const workareaViewW = editorW * rootSctm.a;\n    const workareaViewH = editorH * rootSctm.d;\n\n    // content offset from canvas in screen pixels\n    const wOffset = workarea.offset();\n    const wOffsetLeft = wOffset.left + rulerwidth;\n    const wOffsetTop = wOffset.top + rulerwidth;\n\n    const delta = (evt.wheelDelta) ? evt.wheelDelta : (evt.detail) ? -evt.detail : 0;\n    if (!delta) { return; }\n\n    let factor = Math.max(3 / 4, Math.min(4 / 3, (delta)));\n\n    let wZoom, hZoom;\n    if (factor > 1) {\n      wZoom = Math.ceil(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.ceil(editorH / workareaViewH * factor * 100) / 100;\n    } else {\n      wZoom = Math.floor(editorW / workareaViewW * factor * 100) / 100;\n      hZoom = Math.floor(editorH / workareaViewH * factor * 100) / 100;\n    }\n    let zoomlevel = Math.min(wZoom, hZoom);\n    zoomlevel = Math.min(10, Math.max(0.01, zoomlevel));\n    if (zoomlevel === currentZoom) {\n      return;\n    }\n    factor = zoomlevel / currentZoom;\n\n    // top left of workarea in content pixels before zoom\n    const topLeftOld = transformPoint(wOffsetLeft, wOffsetTop, rootSctm);\n\n    // top left of workarea in content pixels after zoom\n    const topLeftNew = {\n      x: pt.x - (pt.x - topLeftOld.x) / factor,\n      y: pt.y - (pt.y - topLeftOld.y) / factor\n    };\n\n    // top left of workarea in canvas pixels relative to content after zoom\n    const topLeftNewCanvas = {\n      x: topLeftNew.x * zoomlevel,\n      y: topLeftNew.y * zoomlevel\n    };\n\n    // new center in canvas pixels\n    const newCtr = {\n      x: topLeftNewCanvas.x - rulerwidth + editorFullW / 2,\n      y: topLeftNewCanvas.y - rulerwidth + editorFullH / 2\n    };\n\n    canvas.setZoom(zoomlevel);\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    call('updateCanvas', {center: false, newCtr});\n    call('zoomDone');\n  }\n);\n}());\n\n/**\n* Group: Text edit functions\n* Functions relating to editing text elements\n* @namespace {PlainObject} textActions\n* @memberof module:svgcanvas.SvgCanvas#\n*/\nconst textActions = canvas.textActions = (function () {\nlet curtext;\nlet textinput;\nlet cursor;\nlet selblock;\nlet blinker;\nlet chardata = [];\nlet textbb; // , transbb;\nlet matrix;\nlet lastX, lastY;\nlet allowDbl;\n\n/**\n *\n * @param {Integer} index\n * @returns {undefined}\n */\nfunction setCursor (index) {\n  const empty = (textinput.value === '');\n  $(textinput).focus();\n\n  if (!arguments.length) {\n    if (empty) {\n      index = 0;\n    } else {\n      if (textinput.selectionEnd !== textinput.selectionStart) { return; }\n      index = textinput.selectionEnd;\n    }\n  }\n\n  const charbb = chardata[index];\n  if (!empty) {\n    textinput.setSelectionRange(index, index);\n  }\n  cursor = getElem('text_cursor');\n  if (!cursor) {\n    cursor = document.createElementNS(NS.SVG, 'line');\n    assignAttributes(cursor, {\n      id: 'text_cursor',\n      stroke: '#333',\n      'stroke-width': 1\n    });\n    cursor = getElem('selectorParentGroup').appendChild(cursor);\n  }\n\n  if (!blinker) {\n    blinker = setInterval(function () {\n      const show = (cursor.getAttribute('display') === 'none');\n      cursor.setAttribute('display', show ? 'inline' : 'none');\n    }, 600);\n  }\n\n  const startPt = ptToScreen(charbb.x, textbb.y);\n  const endPt = ptToScreen(charbb.x, (textbb.y + textbb.height));\n\n  assignAttributes(cursor, {\n    x1: startPt.x,\n    y1: startPt.y,\n    x2: endPt.x,\n    y2: endPt.y,\n    visibility: 'visible',\n    display: 'inline'\n  });\n\n  if (selblock) { selblock.setAttribute('d', ''); }\n}\n\n/**\n *\n * @param {Integer} start\n * @param {Integer} end\n * @param {boolean} skipInput\n * @returns {undefined}\n */\nfunction setSelection (start, end, skipInput) {\n  if (start === end) {\n    setCursor(end);\n    return;\n  }\n\n  if (!skipInput) {\n    textinput.setSelectionRange(start, end);\n  }\n\n  selblock = getElem('text_selectblock');\n  if (!selblock) {\n    selblock = document.createElementNS(NS.SVG, 'path');\n    assignAttributes(selblock, {\n      id: 'text_selectblock',\n      fill: 'green',\n      opacity: 0.5,\n      style: 'pointer-events:none'\n    });\n    getElem('selectorParentGroup').append(selblock);\n  }\n\n  const startbb = chardata[start];\n  const endbb = chardata[end];\n\n  cursor.setAttribute('visibility', 'hidden');\n\n  const tl = ptToScreen(startbb.x, textbb.y),\n    tr = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y),\n    bl = ptToScreen(startbb.x, textbb.y + textbb.height),\n    br = ptToScreen(startbb.x + (endbb.x - startbb.x), textbb.y + textbb.height);\n\n  const dstr = 'M' + tl.x + ',' + tl.y +\n    ' L' + tr.x + ',' + tr.y +\n    ' ' + br.x + ',' + br.y +\n    ' ' + bl.x + ',' + bl.y + 'z';\n\n  assignAttributes(selblock, {\n    d: dstr,\n    display: 'inline'\n  });\n}\n\n/**\n *\n * @param {Float} mouseX\n * @param {Float} mouseY\n * @returns {Integer}\n */\nfunction getIndexFromPoint (mouseX, mouseY) {\n  // Position cursor here\n  const pt = svgroot.createSVGPoint();\n  pt.x = mouseX;\n  pt.y = mouseY;\n\n  // No content, so return 0\n  if (chardata.length === 1) { return 0; }\n  // Determine if cursor should be on left or right of character\n  let charpos = curtext.getCharNumAtPosition(pt);\n  if (charpos < 0) {\n    // Out of text range, look at mouse coords\n    charpos = chardata.length - 2;\n    if (mouseX <= chardata[0].x) {\n      charpos = 0;\n    }\n  } else if (charpos >= chardata.length - 2) {\n    charpos = chardata.length - 2;\n  }\n  const charbb = chardata[charpos];\n  const mid = charbb.x + (charbb.width / 2);\n  if (mouseX > mid) {\n    charpos++;\n  }\n  return charpos;\n}\n\n/**\n *\n * @param {Float} mouseX\n * @param {Float} mouseY\n * @returns {undefined}\n */\nfunction setCursorFromPoint (mouseX, mouseY) {\n  setCursor(getIndexFromPoint(mouseX, mouseY));\n}\n\n/**\n *\n * @param {Float} x\n * @param {Float} y\n * @param {boolean} apply\n * @returns {undefined}\n */\nfunction setEndSelectionFromPoint (x, y, apply) {\n  const i1 = textinput.selectionStart;\n  const i2 = getIndexFromPoint(x, y);\n\n  const start = Math.min(i1, i2);\n  const end = Math.max(i1, i2);\n  setSelection(start, end, !apply);\n}\n\n/**\n *\n * @param {Float} xIn\n * @param {Float} yIn\n * @returns {module:math.XYObject}\n */\nfunction screenToPt (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  out.x /= currentZoom;\n  out.y /= currentZoom;\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix.inverse());\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  return out;\n}\n\n/**\n *\n * @param {Float} xIn\n * @param {Float} yIn\n * @returns {module:math.XYObject}\n */\nfunction ptToScreen (xIn, yIn) {\n  const out = {\n    x: xIn,\n    y: yIn\n  };\n\n  if (matrix) {\n    const pt = transformPoint(out.x, out.y, matrix);\n    out.x = pt.x;\n    out.y = pt.y;\n  }\n\n  out.x *= currentZoom;\n  out.y *= currentZoom;\n\n  return out;\n}\n\n/*\n// Not currently in use\nfunction hideCursor () {\n  if (cursor) {\n    cursor.setAttribute('visibility', 'hidden');\n  }\n}\n*/\n\n/**\n *\n * @param {Event} evt\n * @returns {undefined}\n */\nfunction selectAll (evt) {\n  setSelection(0, curtext.textContent.length);\n  $(this).unbind(evt);\n}\n\n/**\n *\n * @param {Event} evt\n * @returns {undefined}\n */\nfunction selectWord (evt) {\n  if (!allowDbl || !curtext) { return; }\n\n  const ept = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = ept.x * currentZoom,\n    mouseY = ept.y * currentZoom;\n  const pt = screenToPt(mouseX, mouseY);\n\n  const index = getIndexFromPoint(pt.x, pt.y);\n  const str = curtext.textContent;\n  const first = str.substr(0, index).replace(/[a-z0-9]+$/i, '').length;\n  const m = str.substr(index).match(/^[a-z0-9]+/i);\n  const last = (m ? m[0].length : 0) + index;\n  setSelection(first, last);\n\n  // Set tripleclick\n  $(evt.target).click(selectAll);\n  setTimeout(function () {\n    $(evt.target).unbind('click', selectAll);\n  }, 300);\n}\n\nreturn /** @lends module:svgcanvas.SvgCanvas#textActions */ {\n  /**\n  * @param {Element} target\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  select (target, x, y) {\n    curtext = target;\n    textActions.toEditMode(x, y);\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  start (elem) {\n    curtext = elem;\n    textActions.toEditMode();\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Element} mouseTarget\n  * @param {Float} startX\n  * @param {Float} startY\n  * @returns {undefined}\n  */\n  mouseDown (evt, mouseTarget, startX, startY) {\n    const pt = screenToPt(startX, startY);\n\n    textinput.focus();\n    setCursorFromPoint(pt.x, pt.y);\n    lastX = startX;\n    lastY = startY;\n\n    // TODO: Find way to block native selection\n  },\n  /**\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseMove (mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n    setEndSelectionFromPoint(pt.x, pt.y);\n  },\n  /**\n  * @param {external:MouseEvent} evt\n  * @param {Float} mouseX\n  * @param {Float} mouseY\n  * @returns {undefined}\n  */\n  mouseUp (evt, mouseX, mouseY) {\n    const pt = screenToPt(mouseX, mouseY);\n\n    setEndSelectionFromPoint(pt.x, pt.y, true);\n\n    // TODO: Find a way to make this work: Use transformed BBox instead of evt.target\n    // if (lastX === mouseX && lastY === mouseY\n    //   && !rectsIntersect(transbb, {x: pt.x, y: pt.y, width: 0, height: 0})) {\n    //   textActions.toSelectMode(true);\n    // }\n\n    if (\n      evt.target !== curtext &&\n      mouseX < lastX + 2 &&\n      mouseX > lastX - 2 &&\n      mouseY < lastY + 2 &&\n      mouseY > lastY - 2\n    ) {\n      textActions.toSelectMode(true);\n    }\n  },\n  /**\n  * @function\n  * @param {Integer} index\n  * @returns {undefined}\n  */\n  setCursor,\n  /**\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {undefined}\n  */\n  toEditMode (x, y) {\n    allowDbl = false;\n    currentMode = 'textedit';\n    selectorManager.requestSelector(curtext).showGrips(false);\n    // Make selector group accept clicks\n    /* const selector = */ selectorManager.requestSelector(curtext); // Do we need this? Has side effect of setting lock, so keeping for now, but next line wasn't being used\n    // const sel = selector.selectorRect;\n\n    textActions.init();\n\n    $(curtext).css('cursor', 'text');\n\n    // if (supportsEditableText()) {\n    //   curtext.setAttribute('editable', 'simple');\n    //   return;\n    // }\n\n    if (!arguments.length) {\n      setCursor();\n    } else {\n      const pt = screenToPt(x, y);\n      setCursorFromPoint(pt.x, pt.y);\n    }\n\n    setTimeout(function () {\n      allowDbl = true;\n    }, 300);\n  },\n  /**\n  * @param {boolean|Element} selectElem\n  * @fires module:svgcanvas.SvgCanvas#event:selected\n  * @returns {undefined}\n  */\n  toSelectMode (selectElem) {\n    currentMode = 'select';\n    clearInterval(blinker);\n    blinker = null;\n    if (selblock) { $(selblock).attr('display', 'none'); }\n    if (cursor) { $(cursor).attr('visibility', 'hidden'); }\n    $(curtext).css('cursor', 'move');\n\n    if (selectElem) {\n      clearSelection();\n      $(curtext).css('cursor', 'move');\n\n      call('selected', [curtext]);\n      addToSelection([curtext], true);\n    }\n    if (curtext && !curtext.textContent.length) {\n      // No content, so delete\n      canvas.deleteSelectedElements();\n    }\n\n    $(textinput).blur();\n\n    curtext = false;\n\n    // if (supportsEditableText()) {\n    //   curtext.removeAttribute('editable');\n    // }\n  },\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  setInputElem (elem) {\n    textinput = elem;\n    // $(textinput).blur(hideCursor);\n  },\n  /**\n  * @returns {undefined}\n  */\n  clear () {\n    if (currentMode === 'textedit') {\n      textActions.toSelectMode();\n    }\n  },\n  /**\n  * @param {Element} inputElem Not in use\n  * @returns {undefined}\n  */\n  init (inputElem) {\n    if (!curtext) { return; }\n    let i, end;\n    // if (supportsEditableText()) {\n    //   curtext.select();\n    //   return;\n    // }\n\n    if (!curtext.parentNode) {\n      // Result of the ffClone, need to get correct element\n      curtext = selectedElements[0];\n      selectorManager.requestSelector(curtext).showGrips(false);\n    }\n\n    const str = curtext.textContent;\n    const len = str.length;\n\n    const xform = curtext.getAttribute('transform');\n\n    textbb = utilsGetBBox(curtext);\n\n    matrix = xform ? getMatrix(curtext) : null;\n\n    chardata = [];\n    chardata.length = len;\n    textinput.focus();\n\n    $(curtext).unbind('dblclick', selectWord).dblclick(selectWord);\n\n    if (!len) {\n      end = {x: textbb.x + (textbb.width / 2), width: 0};\n    }\n\n    for (i = 0; i < len; i++) {\n      const start = curtext.getStartPositionOfChar(i);\n      end = curtext.getEndPositionOfChar(i);\n\n      if (!supportsGoodTextCharPos()) {\n        const offset = canvas.contentW * currentZoom;\n        start.x -= offset;\n        end.x -= offset;\n\n        start.x /= currentZoom;\n        end.x /= currentZoom;\n      }\n\n      // Get a \"bbox\" equivalent for each character. Uses the\n      // bbox data of the actual text for y, height purposes\n\n      // TODO: Decide if y, width and height are actually necessary\n      chardata[i] = {\n        x: start.x,\n        y: textbb.y, // start.y?\n        width: end.x - start.x,\n        height: textbb.height\n      };\n    }\n\n    // Add a last bbox for cursor at end of text\n    chardata.push({\n      x: end.x,\n      width: 0\n    });\n    setSelection(textinput.selectionStart, textinput.selectionEnd, true);\n  }\n};\n}());\n\n/**\n* Group: Serialization\n*/\n\n/**\n* Looks at DOM elements inside the `<defs>` to see if they are referred to,\n* removes them from the DOM if they are not.\n* @function module:svgcanvas.SvgCanvas#removeUnusedDefElems\n* @returns {Integer} The number of elements that were removed\n*/\nconst removeUnusedDefElems = this.removeUnusedDefElems = function () {\n  const defs = svgcontent.getElementsByTagNameNS(NS.SVG, 'defs');\n  if (!defs || !defs.length) { return 0; }\n\n  // if (!defs.firstChild) { return; }\n\n  const defelemUses = [];\n  let numRemoved = 0;\n  const attrs = ['fill', 'stroke', 'filter', 'marker-start', 'marker-mid', 'marker-end'];\n  const alen = attrs.length;\n\n  const allEls = svgcontent.getElementsByTagNameNS(NS.SVG, '*');\n  const allLen = allEls.length;\n\n  let i, j;\n  for (i = 0; i < allLen; i++) {\n    const el = allEls[i];\n    for (j = 0; j < alen; j++) {\n      const ref = getUrlFromAttr(el.getAttribute(attrs[j]));\n      if (ref) {\n        defelemUses.push(ref.substr(1));\n      }\n    }\n\n    // gradients can refer to other gradients\n    const href = getHref(el);\n    if (href && href.startsWith('#')) {\n      defelemUses.push(href.substr(1));\n    }\n  }\n\n  const defelems = $(defs).find('linearGradient, radialGradient, filter, marker, svg, symbol');\n  i = defelems.length;\n  while (i--) {\n    const defelem = defelems[i];\n    const {id} = defelem;\n    if (!defelemUses.includes(id)) {\n      // Not found, so remove (but remember)\n      removedElements[id] = defelem;\n      defelem.remove();\n      numRemoved++;\n    }\n  }\n\n  return numRemoved;\n};\n\n/**\n* Main function to set up the SVG content for output.\n* @function module:svgcanvas.SvgCanvas#svgCanvasToString\n* @returns {string} The SVG image for output\n*/\nthis.svgCanvasToString = function () {\n  // keep calling it until there are none to remove\n  while (removeUnusedDefElems() > 0) {} // eslint-disable-line no-empty\n\n  pathActions.clear(true);\n\n  // Keep SVG-Edit comment on top\n  $.each(svgcontent.childNodes, function (i, node) {\n    if (i && node.nodeType === 8 && node.data.includes('Created with')) {\n      svgcontent.firstChild.before(node);\n    }\n  });\n\n  // Move out of in-group editing mode\n  if (currentGroup) {\n    draw.leaveContext();\n    selectOnly([currentGroup]);\n  }\n\n  const nakedSvgs = [];\n\n  // Unwrap gsvg if it has no special attributes (only id and style)\n  $(svgcontent).find('g:data(gsvg)').each(function () {\n    const attrs = this.attributes;\n    let len = attrs.length;\n    for (let i = 0; i < len; i++) {\n      if (attrs[i].nodeName === 'id' || attrs[i].nodeName === 'style') {\n        len--;\n      }\n    }\n    // No significant attributes, so ungroup\n    if (len <= 0) {\n      const svg = this.firstChild;\n      nakedSvgs.push(svg);\n      $(this).replaceWith(svg);\n    }\n  });\n  const output = this.svgToString(svgcontent, 0);\n\n  // Rewrap gsvg\n  if (nakedSvgs.length) {\n    $(nakedSvgs).each(function () {\n      groupSvgElem(this);\n    });\n  }\n\n  return output;\n};\n\n/**\n* Sub function ran on each SVG element to convert it to a string as desired.\n* @function module:svgcanvas.SvgCanvas#svgToString\n* @param {Element} elem - The SVG element to convert\n* @param {Integer} indent - Number of spaces to indent this tag\n* @returns {string} The given element as an SVG tag\n*/\nthis.svgToString = function (elem, indent) {\n  const out = [];\n  const unit = curConfig.baseUnit;\n  const unitRe = new RegExp('^-?[\\\\d\\\\.]+' + unit + '$');\n\n  if (elem) {\n    cleanupElement(elem);\n    const attrs = Array.from(elem.attributes);\n    const childs = elem.childNodes;\n    attrs.sort((a, b) => {\n      return a.name > b.name ? -1 : 1;\n    });\n\n    for (let i = 0; i < indent; i++) { out.push(' '); }\n    out.push('<'); out.push(elem.nodeName);\n    if (elem.id === 'svgcontent') {\n      // Process root element separately\n      const res = getResolution();\n\n      const vb = '';\n      // TODO: Allow this by dividing all values by current baseVal\n      // Note that this also means we should properly deal with this on import\n      // if (curConfig.baseUnit !== 'px') {\n      //   const unit = curConfig.baseUnit;\n      //   const unitM = getTypeMap()[unit];\n      //   res.w = shortFloat(res.w / unitM);\n      //   res.h = shortFloat(res.h / unitM);\n      //   vb = ' viewBox=\"' + [0, 0, res.w, res.h].join(' ') + '\"';\n      //   res.w += unit;\n      //   res.h += unit;\n      // }\n\n      if (unit !== 'px') {\n        res.w = convertUnit(res.w, unit) + unit;\n        res.h = convertUnit(res.h, unit) + unit;\n      }\n\n      out.push(' width=\"' + res.w + '\" height=\"' + res.h + '\"' + vb + ' xmlns=\"' + NS.SVG + '\"');\n\n      const nsuris = {};\n\n      // Check elements for namespaces, add if found\n      $(elem).find('*').andSelf().each(function () {\n        // const el = this;\n        // for some elements have no attribute\n        const uri = this.namespaceURI;\n        if (uri && !nsuris[uri] && nsMap[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {\n          nsuris[uri] = true;\n          out.push(' xmlns:' + nsMap[uri] + '=\"' + uri + '\"');\n        }\n\n        $.each(this.attributes, function (i, attr) {\n          const u = attr.namespaceURI;\n          if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {\n            nsuris[u] = true;\n            out.push(' xmlns:' + nsMap[u] + '=\"' + u + '\"');\n          }\n        });\n      });\n\n      let i = attrs.length;\n      const attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];\n      while (i--) {\n        const attr = attrs[i];\n        const attrVal = toXml(attr.value);\n\n        // Namespaces have already been dealt with, so skip\n        if (attr.nodeName.startsWith('xmlns:')) { continue; }\n\n        // only serialize attributes we don't use internally\n        if (attrVal !== '' && !attrNames.includes(attr.localName)) {\n          if (!attr.namespaceURI || nsMap[attr.namespaceURI]) {\n            out.push(' ');\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    } else {\n      // Skip empty defs\n      if (elem.nodeName === 'defs' && !elem.firstChild) { return ''; }\n\n      const mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];\n      for (let i = attrs.length - 1; i >= 0; i--) {\n        const attr = attrs[i];\n        let attrVal = toXml(attr.value);\n        // remove bogus attributes added by Gecko\n        if (mozAttrs.includes(attr.localName)) { continue; }\n        if (attrVal !== '') {\n          if (attrVal.startsWith('pointer-events')) { continue; }\n          if (attr.localName === 'class' && attrVal.startsWith('se_')) { continue; }\n          out.push(' ');\n          if (attr.localName === 'd') { attrVal = pathActions.convertPath(elem, true); }\n          if (!isNaN(attrVal)) {\n            attrVal = shortFloat(attrVal);\n          } else if (unitRe.test(attrVal)) {\n            attrVal = shortFloat(attrVal) + unit;\n          }\n\n          // Embed images when saving\n          if (saveOptions.apply &&\n            elem.nodeName === 'image' &&\n            attr.localName === 'href' &&\n            saveOptions.images &&\n            saveOptions.images === 'embed'\n          ) {\n            const img = encodableImages[attrVal];\n            if (img) { attrVal = img; }\n          }\n\n          // map various namespaces to our fixed namespace prefixes\n          // (the default xmlns attribute itself does not get a prefix)\n          if (!attr.namespaceURI || attr.namespaceURI === NS.SVG || nsMap[attr.namespaceURI]) {\n            out.push(attr.nodeName); out.push('=\"');\n            out.push(attrVal); out.push('\"');\n          }\n        }\n      }\n    }\n\n    if (elem.hasChildNodes()) {\n      out.push('>');\n      indent++;\n      let bOneLine = false;\n\n      for (let i = 0; i < childs.length; i++) {\n        const child = childs.item(i);\n        switch (child.nodeType) {\n        case 1: // element node\n          out.push('\\n');\n          out.push(this.svgToString(childs.item(i), indent));\n          break;\n        case 3: { // text node\n          const str = child.nodeValue.replace(/^\\s+|\\s+$/g, '');\n          if (str !== '') {\n            bOneLine = true;\n            out.push(String(toXml(str)));\n          }\n          break;\n        } case 4: // cdata node\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<![CDATA[');\n          out.push(child.nodeValue);\n          out.push(']]>');\n          break;\n        case 8: // comment\n          out.push('\\n');\n          out.push(new Array(indent + 1).join(' '));\n          out.push('<!--');\n          out.push(child.data);\n          out.push('-->');\n          break;\n        } // switch on node type\n      }\n      indent--;\n      if (!bOneLine) {\n        out.push('\\n');\n        for (let i = 0; i < indent; i++) { out.push(' '); }\n      }\n      out.push('</'); out.push(elem.nodeName); out.push('>');\n    } else {\n      out.push('/>');\n    }\n  }\n  return out.join('');\n}; // end svgToString()\n\n/**\n * Function to run when image data is found\n * @callback module:svgcanvas.ImageEmbeddedCallback\n * @param {string|false} result Data URL\n * @returns {undefined}\n */\n/**\n* Converts a given image file to a data URL when possible, then runs a given callback.\n* @function module:svgcanvas.SvgCanvas#embedImage\n* @param {string} src - The path/URL of the image\n* @returns {Promise} Resolves to Data URL (string|false)\n*/\nthis.embedImage = function (src) {\n  // Todo: Remove this Promise in favor of making an async/await `Image.load` utility\n  return new Promise(function (resolve, reject) { // eslint-disable-line promise/avoid-new\n    // load in the image and once it's loaded, get the dimensions\n    $(new Image()).load(function (response, status, xhr) {\n      if (status === 'error') {\n        reject(new Error('Error loading image: ' + xhr.status + ' ' + xhr.statusText));\n        return;\n      }\n      // create a canvas the same size as the raster image\n      const cvs = document.createElement('canvas');\n      cvs.width = this.width;\n      cvs.height = this.height;\n      // load the raster image into the canvas\n      cvs.getContext('2d').drawImage(this, 0, 0);\n      // retrieve the data: URL\n      try {\n        let urldata = ';svgedit_url=' + encodeURIComponent(src);\n        urldata = cvs.toDataURL().replace(';base64', urldata + ';base64');\n        encodableImages[src] = urldata;\n      } catch (e) {\n        encodableImages[src] = false;\n      }\n      lastGoodImgUrl = src;\n      resolve(encodableImages[src]);\n    }).attr('src', src);\n  });\n};\n\n/**\n* Sets a given URL to be a \"last good image\" URL.\n* @function module:svgcanvas.SvgCanvas#setGoodImage\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setGoodImage = function (val) {\n  lastGoodImgUrl = val;\n};\n\n/**\n* Does nothing by default, handled by optional widget/extension.\n* @function module:svgcanvas.SvgCanvas#open\n* @returns {undefined}\n*/\nthis.open = function () {\n  /* */\n};\n\n/**\n* Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.\n* This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save\n* function to the 'saved' event.\n* @function module:svgcanvas.SvgCanvas#save\n* @param {module:svgcanvas.SaveOptions} opts\n* @fires module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\nthis.save = function (opts) {\n  // remove the selected outline before serializing\n  clearSelection();\n  // Update save options if provided\n  if (opts) { $.extend(saveOptions, opts); }\n  saveOptions.apply = true;\n\n  // no need for doctype, see https://jwatt.org/svg/authoring/#doctype-declaration\n  const str = this.svgCanvasToString();\n  call('saved', str);\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.IssuesAndCodes\n* @property {string[]} issueCodes The locale-independent code names\n* @property {string[]} issues The localized descriptions\n*/\n\n/**\n* Codes only is useful for locale-independent detection.\n* @returns {module:svgcanvas.IssuesAndCodes}\n*/\nfunction getIssues () {\n  // remove the selected outline before serializing\n  clearSelection();\n\n  // Check for known CanVG issues\n  const issues = [];\n  const issueCodes = [];\n\n  // Selector and notice\n  const issueList = {\n    feGaussianBlur: uiStrings.exportNoBlur,\n    foreignObject: uiStrings.exportNoforeignObject,\n    '[stroke-dasharray]': uiStrings.exportNoDashArray\n  };\n  const content = $(svgcontent);\n\n  // Add font/text check if Canvas Text API is not implemented\n  if (!('font' in $('<canvas>')[0].getContext('2d'))) {\n    issueList.text = uiStrings.exportNoText;\n  }\n\n  $.each(issueList, function (sel, descr) {\n    if (content.find(sel).length) {\n      issueCodes.push(sel);\n      issues.push(descr);\n    }\n  });\n  return {issues, issueCodes};\n}\n\nlet canvg;\n/**\n* @typedef {\"feGaussianBlur\"|\"foreignObject\"|\"[stroke-dasharray]\"|\"text\"} module:svgcanvas.IssueCode\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ImageExportedResults\n* @property {string} datauri Contents as a Data URL\n* @property {string} bloburl May be the empty string\n* @property {string} svg The SVG contents as a string\n* @property {string[]} issues The localization messages of `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes CanVG issues found with the SVG\n* @property {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} type The chosen image type\n* @property {\"image/png\"|\"image/jpeg\"|\"image/bmp\"|\"image/webp\"} mimeType The image MIME type\n* @property {Float} quality A decimal between 0 and 1 (for use with JPEG or WEBP)\n* @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added\n*/\n\n/**\n* Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,\n* then calls \"exported\" with an object including the string, image\n* information, and any issues found.\n* @function module:svgcanvas.SvgCanvas#rasterExport\n* @param {\"PNG\"|\"JPEG\"|\"BMP\"|\"WEBP\"|\"ICO\"} [imgType=\"PNG\"]\n* @param {Float} [quality] Between 0 and 1\n* @param {string} [exportWindowName]\n* @param {PlainObject} [opts]\n* @param {boolean} [opts.avoidEvent]\n* @fires module:svgcanvas.SvgCanvas#event:exported\n* @todo Confirm/fix ICO type\n* @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}\n*/\nthis.rasterExport = async function (imgType, quality, exportWindowName, opts = {}) {\n  const type = imgType === 'ICO' ? 'BMP' : (imgType || 'PNG');\n  const mimeType = 'image/' + type.toLowerCase();\n  const {issues, issueCodes} = getIssues();\n  const svg = this.svgCanvasToString();\n\n  if (!canvg) {\n    ({canvg} = await importSetGlobal(curConfig.canvgPath + 'canvg.js', {\n      global: 'canvg'\n    }));\n  }\n  if (!$('#export_canvas').length) {\n    $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');\n  }\n  const c = $('#export_canvas')[0];\n  c.width = canvas.contentW;\n  c.height = canvas.contentH;\n\n  await canvg(c, svg);\n  // Todo: Make async/await utility in place of `toBlob`, so we can remove this constructor\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const dataURLType = type.toLowerCase();\n    const datauri = quality\n      ? c.toDataURL('image/' + dataURLType, quality)\n      : c.toDataURL('image/' + dataURLType);\n    let bloburl;\n    /**\n     * Called when `bloburl` is available for export.\n     * @returns {undefined}\n     */\n    function done () {\n      const obj = {\n        datauri, bloburl, svg, issues, issueCodes, type: imgType,\n        mimeType, quality, exportWindowName\n      };\n      if (!opts.avoidEvent) {\n        call('exported', obj);\n      }\n      resolve(obj);\n    }\n    if (c.toBlob) {\n      c.toBlob((blob) => {\n        bloburl = createObjectURL(blob);\n        done();\n      }, mimeType, quality);\n      return;\n    }\n    bloburl = dataURLToObjectURL(datauri);\n    done();\n  });\n};\n/**\n * @external jsPDF\n */\n/**\n * @typedef {undefined|\"save\"|\"arraybuffer\"|\"blob\"|\"datauristring\"|\"dataurlstring\"|\"dataurlnewwindow\"|\"datauri\"|\"dataurl\"} external:jsPDF.OutputType\n * @todo Newer version to add also allows these `outputType` values \"bloburi\"|\"bloburl\" which return strings, so document here and for `outputType` of `module:svgcanvas.PDFExportedResults` below if added\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.PDFExportedResults\n* @property {string} svg The SVG PDF output\n* @property {string|ArrayBuffer|Blob|window} output The output based on the `outputType`;\n* if `undefined`, \"datauristring\", \"dataurlstring\", \"datauri\",\n* or \"dataurl\", will be a string (`undefined` gives a document, while the others\n* build as Data URLs; \"datauri\" and \"dataurl\" change the location of the current page); if\n* \"arraybuffer\", will return `ArrayBuffer`; if \"blob\", returns a `Blob`;\n* if \"dataurlnewwindow\", will change the current page's location and return a string\n* if in Safari and no window object is found; otherwise opens in, and returns, a new `window`\n* object; if \"save\", will have the same return as \"dataurlnewwindow\" if\n* `navigator.getUserMedia` support is found without `URL.createObjectURL` support; otherwise\n* returns `undefined` but attempts to save\n* @property {external:jsPDF.OutputType} outputType\n* @property {string[]} issues The human-readable localization messages of corresponding `issueCodes`\n* @property {module:svgcanvas.IssueCode[]} issueCodes\n* @property {string} exportWindowName\n*/\n\n/**\n* Generates a PDF based on the current image, then calls \"exportedPDF\" with\n* an object including the string, the data URL, and any issues found.\n* @function module:svgcanvas.SvgCanvas#exportPDF\n* @param {string} [exportWindowName] Will also be used for the download file name here\n* @param {external:jsPDF.OutputType} [outputType=\"dataurlstring\"]\n* @fires module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}\n*/\nthis.exportPDF = async function (\n  exportWindowName,\n  outputType = isChrome() ? 'save' : undefined\n) {\n  if (!window.jsPDF) {\n    // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n    await importScript([\n      // We do not currently have these paths configurable as they are\n      //   currently global-only, so not Rolled-up\n      'jspdf/underscore-min.js',\n      'jspdf/jspdf.min.js'\n    ]);\n\n    const modularVersion = !('svgEditor' in window) ||\n      !window.svgEditor ||\n      window.svgEditor.modules !== false;\n    // Todo: Switch to `import()` when widely supported and available (also allow customization of path)\n    await importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {\n      type: modularVersion\n        ? 'module'\n        : 'text/javascript'\n    });\n    // await importModule('jspdf/jspdf.plugin.svgToPdf.js');\n  }\n\n  const res = getResolution();\n  const orientation = res.w > res.h ? 'landscape' : 'portrait';\n  const unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes\n\n  // Todo: Give options to use predefined jsPDF formats like \"a4\", etc. from pull-down (with option to keep customizable)\n  const doc = jsPDF({\n    orientation,\n    unit,\n    format: [res.w, res.h]\n    // , compressPdf: true\n  });\n  const docTitle = getDocumentTitle();\n  doc.setProperties({\n    title: docTitle /* ,\n    subject: '',\n    author: '',\n    keywords: '',\n    creator: '' */\n  });\n  const {issues, issueCodes} = getIssues();\n  const svg = this.svgCanvasToString();\n  doc.addSVG(svg, 0, 0);\n\n  // doc.output('save'); // Works to open in a new\n  //  window; todo: configure this and other export\n  //  options to optionally work in this manner as\n  //  opposed to opening a new tab\n  outputType = outputType || 'dataurlstring';\n  const obj = {svg, issues, issueCodes, exportWindowName, outputType};\n  obj.output = doc.output(outputType, outputType === 'save' ? (exportWindowName || 'svg.pdf') : undefined);\n  call('exportedPDF', obj);\n  return obj;\n};\n\n/**\n* Returns the current drawing as raw SVG XML text.\n* @function module:svgcanvas.SvgCanvas#getSvgString\n* @returns {string} The current drawing as raw SVG XML text.\n*/\nthis.getSvgString = function () {\n  saveOptions.apply = false;\n  return this.svgCanvasToString();\n};\n\n/**\n* This function determines whether to use a nonce in the prefix, when\n* generating IDs for future documents in SVG-Edit.\n* If you're controlling SVG-Edit externally, and want randomized IDs, call\n* this BEFORE calling `svgCanvas.setSvgString`.\n* @function module:svgcanvas.SvgCanvas#randomizeIds\n* @param {boolean} [enableRandomization] If true, adds a nonce to the prefix. Thus\n* `svgCanvas.randomizeIds() <==> svgCanvas.randomizeIds(true)`\n* @returns {undefined}\n*/\nthis.randomizeIds = function (enableRandomization) {\n  if (arguments.length > 0 && enableRandomization === false) {\n    draw.randomizeIds(false, getCurrentDrawing());\n  } else {\n    draw.randomizeIds(true, getCurrentDrawing());\n  }\n};\n\n/**\n* Ensure each element has a unique ID.\n* @function module:svgcanvas.SvgCanvas#uniquifyElems\n* @param {Element} g - The parent element of the tree to give unique IDs\n* @returns {undefined}\n*/\nconst uniquifyElems = this.uniquifyElems = function (g) {\n  const ids = {};\n  // TODO: Handle markers and connectors. These are not yet re-identified properly\n  // as their referring elements do not get remapped.\n  //\n  // <marker id='se_marker_end_svg_7'/>\n  // <polyline id='svg_7' se:connector='svg_1 svg_6' marker-end='url(#se_marker_end_svg_7)'/>\n  //\n  // Problem #1: if svg_1 gets renamed, we do not update the polyline's se:connector attribute\n  // Problem #2: if the polyline svg_7 gets renamed, we do not update the marker id nor the polyline's marker-end attribute\n  const refElems = ['filter', 'linearGradient', 'pattern', 'radialGradient', 'symbol', 'textPath', 'use'];\n\n  walkTree(g, function (n) {\n    // if it's an element node\n    if (n.nodeType === 1) {\n      // and the element has an ID\n      if (n.id) {\n        // and we haven't tracked this ID yet\n        if (!(n.id in ids)) {\n          // add this id to our map\n          ids[n.id] = {elem: null, attrs: [], hrefs: []};\n        }\n        ids[n.id].elem = n;\n      }\n\n      // now search for all attributes on this element that might refer\n      // to other elements\n      $.each(refAttrs, function (i, attr) {\n        const attrnode = n.getAttributeNode(attr);\n        if (attrnode) {\n          // the incoming file has been sanitized, so we should be able to safely just strip off the leading #\n          const url = getUrlFromAttr(attrnode.value),\n            refid = url ? url.substr(1) : null;\n          if (refid) {\n            if (!(refid in ids)) {\n              // add this id to our map\n              ids[refid] = {elem: null, attrs: [], hrefs: []};\n            }\n            ids[refid].attrs.push(attrnode);\n          }\n        }\n      });\n\n      // check xlink:href now\n      const href = getHref(n);\n      // TODO: what if an <image> or <a> element refers to an element internally?\n      if (href && refElems.includes(n.nodeName)) {\n        const refid = href.substr(1);\n        if (refid) {\n          if (!(refid in ids)) {\n            // add this id to our map\n            ids[refid] = {elem: null, attrs: [], hrefs: []};\n          }\n          ids[refid].hrefs.push(n);\n        }\n      }\n    }\n  });\n\n  // in ids, we now have a map of ids, elements and attributes, let's re-identify\n  for (const oldid in ids) {\n    if (!oldid) { continue; }\n    const {elem} = ids[oldid];\n    if (elem) {\n      const newid = getNextId();\n\n      // assign element its new id\n      elem.id = newid;\n\n      // remap all url() attributes\n      const {attrs} = ids[oldid];\n      let j = attrs.length;\n      while (j--) {\n        const attr = attrs[j];\n        attr.ownerElement.setAttribute(attr.name, 'url(#' + newid + ')');\n      }\n\n      // remap all href attributes\n      const hreffers = ids[oldid].hrefs;\n      let k = hreffers.length;\n      while (k--) {\n        const hreffer = hreffers[k];\n        setHref(hreffer, '#' + newid);\n      }\n    }\n  }\n};\n\n/**\n* Assigns reference data for each use element.\n* @function module:svgcanvas.SvgCanvas#setUseData\n* @param {Element} parent\n* @returns {undefined}\n*/\nconst setUseData = this.setUseData = function (parent) {\n  let elems = $(parent);\n\n  if (parent.tagName !== 'use') {\n    elems = elems.find('use');\n  }\n\n  elems.each(function () {\n    const id = getHref(this).substr(1);\n    const refElem = getElem(id);\n    if (!refElem) { return; }\n    $(this).data('ref', refElem);\n    if (refElem.tagName === 'symbol' || refElem.tagName === 'svg') {\n      $(this).data('symbol', refElem).data('ref', refElem);\n    }\n  });\n};\n\n/**\n* Converts gradients from userSpaceOnUse to objectBoundingBox.\n* @function module:svgcanvas.SvgCanvas#convertGradients\n* @param {Element} elem\n* @returns {undefined}\n*/\nconst convertGradients = this.convertGradients = function (elem) {\n  let elems = $(elem).find('linearGradient, radialGradient');\n  if (!elems.length && isWebkit()) {\n    // Bug in webkit prevents regular *Gradient selector search\n    elems = $(elem).find('*').filter(function () {\n      return (this.tagName.includes('Gradient'));\n    });\n  }\n\n  elems.each(function () {\n    const grad = this; // eslint-disable-line consistent-this\n    if ($(grad).attr('gradientUnits') === 'userSpaceOnUse') {\n      // TODO: Support more than one element with this ref by duplicating parent grad\n      const fillStrokeElems = $(svgcontent).find('[fill=\"url(#' + grad.id + ')\"],[stroke=\"url(#' + grad.id + ')\"]');\n      if (!fillStrokeElems.length) { return; }\n\n      // get object's bounding box\n      const bb = utilsGetBBox(fillStrokeElems[0]);\n\n      // This will occur if the element is inside a <defs> or a <symbol>,\n      // in which we shouldn't need to convert anyway.\n      if (!bb) { return; }\n\n      if (grad.tagName === 'linearGradient') {\n        const gCoords = $(grad).attr(['x1', 'y1', 'x2', 'y2']);\n\n        // If has transform, convert\n        const tlist = grad.gradientTransform.baseVal;\n        if (tlist && tlist.numberOfItems > 0) {\n          const m = transformListToTransform(tlist).matrix;\n          const pt1 = transformPoint(gCoords.x1, gCoords.y1, m);\n          const pt2 = transformPoint(gCoords.x2, gCoords.y2, m);\n\n          gCoords.x1 = pt1.x;\n          gCoords.y1 = pt1.y;\n          gCoords.x2 = pt2.x;\n          gCoords.y2 = pt2.y;\n          grad.removeAttribute('gradientTransform');\n        }\n\n        $(grad).attr({\n          x1: (gCoords.x1 - bb.x) / bb.width,\n          y1: (gCoords.y1 - bb.y) / bb.height,\n          x2: (gCoords.x2 - bb.x) / bb.width,\n          y2: (gCoords.y2 - bb.y) / bb.height\n        });\n        grad.removeAttribute('gradientUnits');\n      }\n      // else {\n      //   Note: radialGradient elements cannot be easily converted\n      //   because userSpaceOnUse will keep circular gradients, while\n      //   objectBoundingBox will x/y scale the gradient according to\n      //   its bbox.\n      //\n      //   For now we'll do nothing, though we should probably have\n      //   the gradient be updated as the element is moved, as\n      //   inkscape/illustrator do.\n      //\n      //   const gCoords = $(grad).attr(['cx', 'cy', 'r']);\n      //\n      //   $(grad).attr({\n      //     cx: (gCoords.cx - bb.x) / bb.width,\n      //     cy: (gCoords.cy - bb.y) / bb.height,\n      //     r: gCoords.r\n      //   });\n      //\n      //   grad.removeAttribute('gradientUnits');\n      // }\n    }\n  });\n};\n\n/**\n* Converts selected/given `<use>` or child SVG element to a group.\n* @function module:svgcanvas.SvgCanvas#convertToGroup\n* @param {Element} elem\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nconst convertToGroup = this.convertToGroup = function (elem) {\n  if (!elem) {\n    elem = selectedElements[0];\n  }\n  const $elem = $(elem);\n  const batchCmd = new BatchCommand();\n  let ts;\n\n  if ($elem.data('gsvg')) {\n    // Use the gsvg as the new group\n    const svg = elem.firstChild;\n    const pt = $(svg).attr(['x', 'y']);\n\n    $(elem.firstChild.firstChild).unwrap();\n    $(elem).removeData('gsvg');\n\n    const tlist = getTransformList(elem);\n    const xform = svgroot.createSVGTransform();\n    xform.setTranslate(pt.x, pt.y);\n    tlist.appendItem(xform);\n    recalculateDimensions(elem);\n    call('selected', [elem]);\n  } else if ($elem.data('symbol')) {\n    elem = $elem.data('symbol');\n\n    ts = $elem.attr('transform');\n    const pos = $elem.attr(['x', 'y']);\n\n    const vb = elem.getAttribute('viewBox');\n\n    if (vb) {\n      const nums = vb.split(' ');\n      pos.x -= Number(nums[0]);\n      pos.y -= Number(nums[1]);\n    }\n\n    // Not ideal, but works\n    ts += ' translate(' + (pos.x || 0) + ',' + (pos.y || 0) + ')';\n\n    const prev = $elem.prev();\n\n    // Remove <use> element\n    batchCmd.addSubCommand(new RemoveElementCommand($elem[0], $elem[0].nextSibling, $elem[0].parentNode));\n    $elem.remove();\n\n    // See if other elements reference this symbol\n    const hasMore = $(svgcontent).find('use:data(symbol)').length;\n\n    const g = svgdoc.createElementNS(NS.SVG, 'g');\n    const childs = elem.childNodes;\n\n    let i;\n    for (i = 0; i < childs.length; i++) {\n      g.append(childs[i].cloneNode(true));\n    }\n\n    // Duplicate the gradients for Gecko, since they weren't included in the <symbol>\n    if (isGecko()) {\n      const dupeGrads = $(findDefs()).children('linearGradient,radialGradient,pattern').clone();\n      $(g).append(dupeGrads);\n    }\n\n    if (ts) {\n      g.setAttribute('transform', ts);\n    }\n\n    const parent = elem.parentNode;\n\n    uniquifyElems(g);\n\n    // Put the dupe gradients back into <defs> (after uniquifying them)\n    if (isGecko()) {\n      $(findDefs()).append($(g).find('linearGradient,radialGradient,pattern'));\n    }\n\n    // now give the g itself a new id\n    g.id = getNextId();\n\n    prev.after(g);\n\n    if (parent) {\n      if (!hasMore) {\n        // remove symbol/svg element\n        const {nextSibling} = elem;\n        elem.remove();\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n      }\n      batchCmd.addSubCommand(new InsertElementCommand(g));\n    }\n\n    setUseData(g);\n\n    if (isGecko()) {\n      convertGradients(findDefs());\n    } else {\n      convertGradients(g);\n    }\n\n    // recalculate dimensions on the top-level children so that unnecessary transforms\n    // are removed\n    walkTreePost(g, function (n) {\n      try {\n        recalculateDimensions(n);\n      } catch (e) {\n        console.log(e); // eslint-disable-line no-console\n      }\n    });\n\n    // Give ID for any visible element missing one\n    $(g).find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    selectOnly([g]);\n\n    const cm = pushGroupProperties(g, true);\n    if (cm) {\n      batchCmd.addSubCommand(cm);\n    }\n\n    addCommandToHistory(batchCmd);\n  } else {\n    console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console\n  }\n};\n\n/**\n* This function sets the current drawing as the input SVG XML.\n* @function module:svgcanvas.SvgCanvas#setSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @param {boolean} [preventUndo=false] - Indicates if we want to do the\n* changes without adding them to the undo stack - e.g. for initializing a\n* drawing on page load.\n* @fires module:svgcanvas.SvgCanvas#event:setnonce\n* @fires module:svgcanvas.SvgCanvas#event:unsetnonce\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} This function returns `false` if the set was\n*     unsuccessful, `true` otherwise.\n*/\nthis.setSvgString = function (xmlString, preventUndo) {\n  try {\n    // convert string into XML document\n    const newDoc = text2xml(xmlString);\n    if (newDoc.firstElementChild &&\n      newDoc.firstElementChild.namespaceURI !== NS.SVG) {\n      return false;\n    }\n\n    this.prepareSvg(newDoc);\n\n    const batchCmd = new BatchCommand('Change Source');\n\n    // remove old svg document\n    const {nextSibling} = svgcontent;\n    const oldzoom = svgroot.removeChild(svgcontent);\n    batchCmd.addSubCommand(new RemoveElementCommand(oldzoom, nextSibling, svgroot));\n\n    // set new svg document\n    // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n    if (svgdoc.adoptNode) {\n      svgcontent = svgdoc.adoptNode(newDoc.documentElement);\n    } else {\n      svgcontent = svgdoc.importNode(newDoc.documentElement, true);\n    }\n\n    svgroot.append(svgcontent);\n    const content = $(svgcontent);\n\n    canvas.current_drawing_ = new draw.Drawing(svgcontent, idprefix);\n\n    // retrieve or set the nonce\n    const nonce = getCurrentDrawing().getNonce();\n    if (nonce) {\n      call('setnonce', nonce);\n    } else {\n      call('unsetnonce');\n    }\n\n    // change image href vals if possible\n    content.find('image').each(function () {\n      const image = this; // eslint-disable-line consistent-this\n      preventClickDefault(image);\n      const val = getHref(this);\n      if (val) {\n        if (val.startsWith('data:')) {\n          // Check if an SVG-edit data URI\n          const m = val.match(/svgedit_url=(.*?);/);\n          if (m) {\n            const url = decodeURIComponent(m[1]);\n            $(new Image()).load(function () {\n              image.setAttributeNS(NS.XLINK, 'xlink:href', url);\n            }).attr('src', url);\n          }\n        }\n        // Add to encodableImages if it loads\n        canvas.embedImage(val);\n      }\n    });\n\n    // Wrap child SVGs in group elements\n    content.find('svg').each(function () {\n      // Skip if it's in a <defs>\n      if ($(this).closest('defs').length) { return; }\n\n      uniquifyElems(this);\n\n      // Check if it already has a gsvg group\n      const pa = this.parentNode;\n      if (pa.childNodes.length === 1 && pa.nodeName === 'g') {\n        $(pa).data('gsvg', this);\n        pa.id = pa.id || getNextId();\n      } else {\n        groupSvgElem(this);\n      }\n    });\n\n    // For Firefox: Put all paint elems in defs\n    if (isGecko()) {\n      content.find('linearGradient, radialGradient, pattern').appendTo(findDefs());\n    }\n\n    // Set ref element for <use> elements\n\n    // TODO: This should also be done if the object is re-added through \"redo\"\n    setUseData(content);\n\n    convertGradients(content[0]);\n\n    const attrs = {\n      id: 'svgcontent',\n      overflow: curConfig.show_outside_canvas ? 'visible' : 'hidden'\n    };\n\n    let percs = false;\n\n    // determine proper size\n    if (content.attr('viewBox')) {\n      const vb = content.attr('viewBox').split(' ');\n      attrs.width = vb[2];\n      attrs.height = vb[3];\n    // handle content that doesn't have a viewBox\n    } else {\n      $.each(['width', 'height'], function (i, dim) {\n        // Set to 100 if not given\n        const val = content.attr(dim) || '100%';\n\n        if (String(val).substr(-1) === '%') {\n          // Use user units if percentage given\n          percs = true;\n        } else {\n          attrs[dim] = convertToNum(dim, val);\n        }\n      });\n    }\n\n    // identify layers\n    draw.identifyLayers();\n\n    // Give ID for any visible layer children missing one\n    content.children().find(visElems).each(function () {\n      if (!this.id) { this.id = getNextId(); }\n    });\n\n    // Percentage width/height, so let's base it on visible elements\n    if (percs) {\n      const bb = getStrokedBBoxDefaultVisible();\n      attrs.width = bb.width + bb.x;\n      attrs.height = bb.height + bb.y;\n    }\n\n    // Just in case negative numbers are given or\n    // result from the percs calculation\n    if (attrs.width <= 0) { attrs.width = 100; }\n    if (attrs.height <= 0) { attrs.height = 100; }\n\n    content.attr(attrs);\n    this.contentW = attrs.width;\n    this.contentH = attrs.height;\n\n    batchCmd.addSubCommand(new InsertElementCommand(svgcontent));\n    // update root to the correct size\n    const changes = content.attr(['width', 'height']);\n    batchCmd.addSubCommand(new ChangeElementCommand(svgroot, changes));\n\n    // reset zoom\n    currentZoom = 1;\n\n    // reset transform lists\n    resetListMap();\n    clearSelection();\n    pathModule.clearData();\n    svgroot.append(selectorManager.selectorParentGroup);\n\n    if (!preventUndo) addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e); // eslint-disable-line no-console\n    return false;\n  }\n\n  return true;\n};\n\n/**\n* This function imports the input SVG XML as a `<symbol>` in the `<defs>`, then adds a\n* `<use>` to the current layer.\n* @function module:svgcanvas.SvgCanvas#importSvgString\n* @param {string} xmlString - The SVG as XML text.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {null|Element} This function returns null if the import was unsuccessful, or the element otherwise.\n* @todo\n* - properly handle if namespace is introduced by imported content (must add to svgcontent\n* and update all prefixes in the imported node)\n* - properly handle recalculating dimensions, `recalculateDimensions()` doesn't handle\n* arbitrary transform lists, but makes some assumptions about how the transform list\n* was obtained\n*/\nthis.importSvgString = function (xmlString) {\n  let j, ts, useEl;\n  try {\n    // Get unique ID\n    const uid = encode64(xmlString.length + xmlString).substr(0, 32);\n\n    let useExisting = false;\n    // Look for symbol and make sure symbol exists in image\n    if (importIds[uid]) {\n      if ($(importIds[uid].symbol).parents('#svgroot').length) {\n        useExisting = true;\n      }\n    }\n\n    const batchCmd = new BatchCommand('Import Image');\n    let symbol;\n    if (useExisting) {\n      ({symbol} = importIds[uid]);\n      ts = importIds[uid].xform;\n    } else {\n      // convert string into XML document\n      const newDoc = text2xml(xmlString);\n\n      this.prepareSvg(newDoc);\n\n      // import new svg document into our document\n      let svg;\n      // If DOM3 adoptNode() available, use it. Otherwise fall back to DOM2 importNode()\n      if (svgdoc.adoptNode) {\n        svg = svgdoc.adoptNode(newDoc.documentElement);\n      } else {\n        svg = svgdoc.importNode(newDoc.documentElement, true);\n      }\n\n      uniquifyElems(svg);\n\n      const innerw = convertToNum('width', svg.getAttribute('width')),\n        innerh = convertToNum('height', svg.getAttribute('height')),\n        innervb = svg.getAttribute('viewBox'),\n        // if no explicit viewbox, create one out of the width and height\n        vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];\n      for (j = 0; j < 4; ++j) {\n        vb[j] = Number(vb[j]);\n      }\n\n      // TODO: properly handle preserveAspectRatio\n      const // canvasw = +svgcontent.getAttribute('width'),\n        canvash = Number(svgcontent.getAttribute('height'));\n      // imported content should be 1/3 of the canvas on its largest dimension\n\n      if (innerh > innerw) {\n        ts = 'scale(' + (canvash / 3) / vb[3] + ')';\n      } else {\n        ts = 'scale(' + (canvash / 3) / vb[2] + ')';\n      }\n\n      // Hack to make recalculateDimensions understand how to scale\n      ts = 'translate(0) ' + ts + ' translate(0)';\n\n      symbol = svgdoc.createElementNS(NS.SVG, 'symbol');\n      const defs = findDefs();\n\n      if (isGecko()) {\n        // Move all gradients into root for Firefox, workaround for this bug:\n        // https://bugzilla.mozilla.org/show_bug.cgi?id=353575\n        // TODO: Make this properly undo-able.\n        $(svg).find('linearGradient, radialGradient, pattern').appendTo(defs);\n      }\n\n      while (svg.firstChild) {\n        const first = svg.firstChild;\n        symbol.append(first);\n      }\n      const attrs = svg.attributes;\n      for (let i = 0; i < attrs.length; i++) {\n        const attr = attrs[i];\n        symbol.setAttribute(attr.nodeName, attr.value);\n      }\n      symbol.id = getNextId();\n\n      // Store data\n      importIds[uid] = {\n        symbol,\n        xform: ts\n      };\n\n      findDefs().append(symbol);\n      batchCmd.addSubCommand(new InsertElementCommand(symbol));\n    }\n\n    useEl = svgdoc.createElementNS(NS.SVG, 'use');\n    useEl.id = getNextId();\n    setHref(useEl, '#' + symbol.id);\n\n    (currentGroup || getCurrentDrawing().getCurrentLayer()).append(useEl);\n    batchCmd.addSubCommand(new InsertElementCommand(useEl));\n    clearSelection();\n\n    useEl.setAttribute('transform', ts);\n    recalculateDimensions(useEl);\n    $(useEl).data('symbol', symbol).data('ref', symbol);\n    addToSelection([useEl]);\n\n    // TODO: Find way to add this in a recalculateDimensions-parsable way\n    // if (vb[0] !== 0 || vb[1] !== 0) {\n    //   ts = 'translate(' + (-vb[0]) + ',' + (-vb[1]) + ') ' + ts;\n    // }\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  } catch (e) {\n    console.log(e); // eslint-disable-line no-console\n    return null;\n  }\n\n  // we want to return the element so we can automatically select it\n  return useEl;\n};\n\n// Could deprecate, but besides external uses, their usage makes clear that\n//  canvas is a dependency for all of these\nconst dr = {\n  identifyLayers, createLayer, cloneLayer, deleteCurrentLayer,\n  setCurrentLayer, renameCurrentLayer, setCurrentLayerPosition,\n  setLayerVisibility, moveSelectedToLayer, mergeLayer, mergeAllLayers,\n  leaveContext, setContext\n};\nObject.entries(dr).forEach(([prop, propVal]) => {\n  canvas[prop] = propVal;\n});\ndraw.init(\n  /**\n  * @implements {module:draw.DrawCanvasInit}\n  */\n  {\n    pathActions,\n    getCurrentGroup () {\n      return currentGroup;\n    },\n    setCurrentGroup (cg) {\n      currentGroup = cg;\n    },\n    getSelectedElements,\n    getSVGContent,\n    undoMgr,\n    elData,\n    getCurrentDrawing,\n    clearSelection,\n    call,\n    addCommandToHistory,\n    /**\n     * @fires module:svgcanvas.SvgCanvas#event:changed\n     * @returns {undefined}\n     */\n    changeSVGContent () {\n      call('changed', [svgcontent]);\n    }\n  }\n);\n\n/**\n* Group: Document functions\n*/\n\n/**\n* Clears the current document. This is not an undoable action.\n* @function module:svgcanvas.SvgCanvas#clear\n* @fires module:svgcanvas.SvgCanvas#event:cleared\n* @returns {undefined}\n*/\nthis.clear = function () {\n  pathActions.clear();\n\n  clearSelection();\n\n  // clear the svgcontent node\n  canvas.clearSvgContentElement();\n\n  // create new document\n  canvas.current_drawing_ = new draw.Drawing(svgcontent);\n\n  // create empty first layer\n  canvas.createLayer('Layer 1');\n\n  // clear the undo stack\n  canvas.undoMgr.resetUndoStack();\n\n  // reset the selector manager\n  selectorManager.initGroup();\n\n  // reset the rubber band box\n  rubberBox = selectorManager.getRubberBandBox();\n\n  call('cleared');\n};\n\n// Alias function\nthis.linkControlPoints = pathActions.linkControlPoints;\n\n/**\n* @function module:svgcanvas.SvgCanvas#getContentElem\n* @returns {Element} The content DOM element\n*/\nthis.getContentElem = function () { return svgcontent; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getRootElem\n* @returns {SVGSVGElement} The root DOM element\n*/\nthis.getRootElem = function () { return svgroot; };\n\n/**\n* @typedef {PlainObject} DimensionsAndZoom\n* @property {Float} w Width\n* @property {Float} h Height\n* @property {Float} zoom Zoom\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getResolution\n* @returns {DimensionsAndZoom} The current dimensions and zoom level in an object\n*/\nconst getResolution = this.getResolution = function () {\n//    const vb = svgcontent.getAttribute('viewBox').split(' ');\n//    return {w:vb[2], h:vb[3], zoom: currentZoom};\n\n  const w = svgcontent.getAttribute('width') / currentZoom;\n  const h = svgcontent.getAttribute('height') / currentZoom;\n\n  return {\n    w,\n    h,\n    zoom: currentZoom\n  };\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getSnapToGrid\n* @returns {boolean} The current snap to grid setting\n*/\nthis.getSnapToGrid = function () { return curConfig.gridSnapping; };\n\n/**\n* @function module:svgcanvas.SvgCanvas#getVersion\n* @returns {string} A string which describes the revision number of SvgCanvas.\n*/\nthis.getVersion = function () {\n  return 'svgcanvas.js ($Rev$)';\n};\n\n/**\n* Update interface strings with given values.\n* @function module:svgcanvas.SvgCanvas#setUiStrings\n* @param {module:path.uiStrings} strs - Object with strings (see the [locales API]{@link module:locale.LocaleStrings} and the [tutorial]{@tutorial LocaleDocs})\n* @returns {undefined}\n*/\nthis.setUiStrings = function (strs) {\n  Object.assign(uiStrings, strs.notification);\n  $ = jQueryPluginDBox($, strs.common);\n  pathModule.setUiStrings(strs);\n};\n\n/**\n* Update configuration options with given values.\n* @function module:svgcanvas.SvgCanvas#setConfig\n* @param {module:SVGEditor.Config} opts - Object with options\n* @returns {undefined}\n*/\nthis.setConfig = function (opts) {\n  Object.assign(curConfig, opts);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getTitle\n* @param {Element} [elem]\n* @returns {string|undefined} the current group/SVG's title contents or\n* `undefined` if no element is passed nd there are no selected elements.\n*/\nthis.getTitle = function (elem) {\n  elem = elem || selectedElements[0];\n  if (!elem) { return undefined; }\n  elem = $(elem).data('gsvg') || $(elem).data('symbol') || elem;\n  const childs = elem.childNodes;\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      return childs[i].textContent;\n    }\n  }\n  return '';\n};\n\n/**\n* Sets the group/SVG's title content.\n* @function module:svgcanvas.SvgCanvas#setGroupTitle\n* @param {string} val\n* @todo Combine this with `setDocumentTitle`\n* @returns {undefined}\n*/\nthis.setGroupTitle = function (val) {\n  let elem = selectedElements[0];\n  elem = $(elem).data('gsvg') || elem;\n\n  const ts = $(elem).children('title');\n\n  const batchCmd = new BatchCommand('Set Label');\n\n  let title;\n  if (!val.length) {\n    // Remove title element\n    const tsNextSibling = ts.nextSibling;\n    batchCmd.addSubCommand(new RemoveElementCommand(ts[0], tsNextSibling, elem));\n    ts.remove();\n  } else if (ts.length) {\n    // Change title contents\n    title = ts[0];\n    batchCmd.addSubCommand(new ChangeElementCommand(title, {'#text': title.textContent}));\n    title.textContent = val;\n  } else {\n    // Add title element\n    title = svgdoc.createElementNS(NS.SVG, 'title');\n    title.textContent = val;\n    $(elem).prepend(title);\n    batchCmd.addSubCommand(new InsertElementCommand(title));\n  }\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getDocumentTitle\n* @returns {string|undefined} The current document title or an empty string if not found\n*/\nconst getDocumentTitle = this.getDocumentTitle = function () {\n  return canvas.getTitle(svgcontent);\n};\n\n/**\n* Adds/updates a title element for the document with the given name.\n* This is an undoable action.\n* @function module:svgcanvas.SvgCanvas#setDocumentTitle\n* @param {string} newTitle - String with the new title\n* @returns {undefined}\n*/\nthis.setDocumentTitle = function (newTitle) {\n  const childs = svgcontent.childNodes;\n  let docTitle = false, oldTitle = '';\n\n  const batchCmd = new BatchCommand('Change Image Title');\n\n  for (let i = 0; i < childs.length; i++) {\n    if (childs[i].nodeName === 'title') {\n      docTitle = childs[i];\n      oldTitle = docTitle.textContent;\n      break;\n    }\n  }\n  if (!docTitle) {\n    docTitle = svgdoc.createElementNS(NS.SVG, 'title');\n    svgcontent.insertBefore(docTitle, svgcontent.firstChild);\n    // svgcontent.firstChild.before(docTitle); // Ok to replace above with this?\n  }\n\n  if (newTitle.length) {\n    docTitle.textContent = newTitle;\n  } else {\n    // No title given, so element is not necessary\n    docTitle.remove();\n  }\n  batchCmd.addSubCommand(new ChangeElementCommand(docTitle, {'#text': oldTitle}));\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Returns the editor's namespace URL, optionally adding it to the root element.\n* @function module:svgcanvas.SvgCanvas#getEditorNS\n* @param {boolean} [add] - Indicates whether or not to add the namespace value\n* @returns {string} The editor's namespace URL\n*/\nthis.getEditorNS = function (add) {\n  if (add) {\n    svgcontent.setAttribute('xmlns:se', NS.SE);\n  }\n  return NS.SE;\n};\n\n/**\n* Changes the document's dimensions to the given size.\n* @function module:svgcanvas.SvgCanvas#setResolution\n* @param {Float|\"fit\"} x - Number with the width of the new dimensions in user units.\n* Can also be the string \"fit\" to indicate \"fit to content\".\n* @param {Float} y - Number with the height of the new dimensions in user units.\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {boolean} Indicates if resolution change was successful.\n* It will fail on \"fit to content\" option with no content to fit to.\n*/\nthis.setResolution = function (x, y) {\n  const res = getResolution();\n  const {w, h} = res;\n  let batchCmd;\n\n  if (x === 'fit') {\n    // Get bounding box\n    const bbox = getStrokedBBoxDefaultVisible();\n\n    if (bbox) {\n      batchCmd = new BatchCommand('Fit Canvas to Content');\n      const visEls = getVisibleElements();\n      addToSelection(visEls);\n      const dx = [], dy = [];\n      $.each(visEls, function (i, item) {\n        dx.push(bbox.x * -1);\n        dy.push(bbox.y * -1);\n      });\n\n      const cmd = canvas.moveSelectedElements(dx, dy, true);\n      batchCmd.addSubCommand(cmd);\n      clearSelection();\n\n      x = Math.round(bbox.width);\n      y = Math.round(bbox.height);\n    } else {\n      return false;\n    }\n  }\n  if (x !== w || y !== h) {\n    if (!batchCmd) {\n      batchCmd = new BatchCommand('Change Image Dimensions');\n    }\n\n    x = convertToNum('width', x);\n    y = convertToNum('height', y);\n\n    svgcontent.setAttribute('width', x);\n    svgcontent.setAttribute('height', y);\n\n    this.contentW = x;\n    this.contentH = y;\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {width: w, height: h}));\n\n    svgcontent.setAttribute('viewBox', [0, 0, x / currentZoom, y / currentZoom].join(' '));\n    batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {viewBox: ['0 0', w, h].join(' ')}));\n\n    addCommandToHistory(batchCmd);\n    call('changed', [svgcontent]);\n  }\n  return true;\n};\n\n/**\n* @typedef {module:jQueryAttr.Attributes} module:svgcanvas.ElementPositionInCanvas\n* @property {Float} x\n* @property {Float} y\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOffset\n* @returns {module:svgcanvas.ElementPositionInCanvas} An object with `x`, `y` values indicating the svgcontent element's\n* position in the editor's canvas.\n*/\nthis.getOffset = function () {\n  return $(svgcontent).attr(['x', 'y']);\n};\n\n/**\n * @typedef {PlainObject} module:svgcanvas.ZoomAndBBox\n * @property {Float} zoom\n * @property {module:utilities.BBoxObject} bbox\n */\n/**\n* Sets the zoom level on the canvas-side based on the given value.\n* @function module:svgcanvas.SvgCanvas#setBBoxZoom\n* @param {\"selection\"|\"canvas\"|\"content\"|\"layer\"|module:SVGEditor.BBoxObjectWithFactor} val - Bounding box object to zoom to or string indicating zoom option. Note: the object value type is defined in `svg-editor.js`\n* @param {Integer} editorW - The editor's workarea box's width\n* @param {Integer} editorH - The editor's workarea box's height\n* @returns {module:svgcanvas.ZoomAndBBox|undefined}\n*/\nthis.setBBoxZoom = function (val, editorW, editorH) {\n  let spacer = 0.85;\n  let bb;\n  const calcZoom = function (bb) { // eslint-disable-line no-shadow\n    if (!bb) { return false; }\n    const wZoom = Math.round((editorW / bb.width) * 100 * spacer) / 100;\n    const hZoom = Math.round((editorH / bb.height) * 100 * spacer) / 100;\n    const zoom = Math.min(wZoom, hZoom);\n    canvas.setZoom(zoom);\n    return {zoom, bbox: bb};\n  };\n\n  if (typeof val === 'object') {\n    bb = val;\n    if (bb.width === 0 || bb.height === 0) {\n      const newzoom = bb.zoom ? bb.zoom : currentZoom * bb.factor;\n      canvas.setZoom(newzoom);\n      return {zoom: currentZoom, bbox: bb};\n    }\n    return calcZoom(bb);\n  }\n\n  switch (val) {\n  case 'selection': {\n    if (!selectedElements[0]) { return undefined; }\n    const selectedElems = $.map(selectedElements, function (n) {\n      if (n) {\n        return n;\n      }\n      return undefined;\n    });\n    bb = getStrokedBBoxDefaultVisible(selectedElems);\n    break;\n  } case 'canvas': {\n    const res = getResolution();\n    spacer = 0.95;\n    bb = {width: res.w, height: res.h, x: 0, y: 0};\n    break;\n  } case 'content':\n    bb = getStrokedBBoxDefaultVisible();\n    break;\n  case 'layer':\n    bb = getStrokedBBoxDefaultVisible(getVisibleElements(getCurrentDrawing().getCurrentLayer()));\n    break;\n  default:\n    return undefined;\n  }\n  return calcZoom(bb);\n};\n\n/**\n* The zoom level has changed. Supplies the new zoom level as a number (not percentage).\n* @event module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @type {Float}\n*/\n/**\n* The bottom panel was updated\n* @event module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n* @type {PlainObject}\n* @property {boolean} nofill Indicates fill is disabled\n* @property {boolean} nostroke Indicates stroke is disabled\n*/\n/**\n* The element selection has changed (elements were added/removed from selection)\n* @event module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the newly selected elements\n* @property {Element|null} selectedElement The single selected element\n* @property {boolean} multiselected Indicates whether one or more elements were selected\n*/\n/**\n* Called when part of element is in process of changing, generally on\n* mousemove actions like rotate, move, etc.\n* @event module:svgcanvas.SvgCanvas#event:ext-elementTransition\n* @type {PlainObject}\n* @property {Element[]} elems Array of transitioning elements\n*/\n/**\n* One or more elements were changed\n* @event module:svgcanvas.SvgCanvas#event:ext-elementChanged\n* @type {PlainObject}\n* @property {Element[]} elems Array of the affected elements\n*/\n/**\n* Invoked as soon as the locale is ready\n* @event module:svgcanvas.SvgCanvas#event:ext-langReady\n* @type {PlainObject}\n* @property {string} lang The two-letter language code\n* @property {module:SVGEditor.uiStrings} uiStrings\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n* The language was changed. Two-letter code of the new language.\n* @event module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @type {string}\n*/\n/**\n* Means for an extension to add locale data. The two-letter language code.\n* @event module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @type {PlainObject}\n* @property {string} lang\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n * Called when new image is created\n * @event module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n * @type {undefined}\n */\n/**\n * Called when sidepanel is resized or toggled\n * @event module:svgcanvas.SvgCanvas#event:ext-workareaResized\n * @type {undefined}\n*/\n/**\n * Called upon addition of the extension, or, if svgicons are set,\n * after the icons are ready when extension SVG icons have loaded.\n * @event module:svgcanvas.SvgCanvas#event:ext-callback\n * @type {undefined}\n*/\n\n/**\n* Sets the zoom to the given level.\n* @function module:svgcanvas.SvgCanvas#setZoom\n* @param {Float} zoomLevel - Float indicating the zoom level to change to\n* @fires module:svgcanvas.SvgCanvas#event:ext-zoomChanged\n* @returns {undefined}\n*/\nthis.setZoom = function (zoomLevel) {\n  const res = getResolution();\n  svgcontent.setAttribute('viewBox', '0 0 ' + res.w / zoomLevel + ' ' + res.h / zoomLevel);\n  currentZoom = zoomLevel;\n  $.each(selectedElements, function (i, elem) {\n    if (!elem) { return; }\n    selectorManager.requestSelector(elem).resize();\n  });\n  pathActions.zoomChange();\n  runExtensions('zoomChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-zoomChanged} */ zoomLevel);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getMode\n* @returns {string} The current editor mode string\n*/\nthis.getMode = function () {\n  return currentMode;\n};\n\n/**\n* Sets the editor's mode to the given string.\n* @function module:svgcanvas.SvgCanvas#setMode\n* @param {string} name - String with the new mode to change to\n* @returns {undefined}\n*/\nthis.setMode = function (name) {\n  pathActions.clear(true);\n  textActions.clear();\n  curProperties = (selectedElements[0] && selectedElements[0].nodeName === 'text') ? curText : curShape;\n  currentMode = name;\n};\n\n/**\n* Group: Element Styling\n*/\n\n/**\n* @typedef {PlainObject} module:svgcanvas.PaintOptions\n* @property {\"solidColor\"} type\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getColor\n* @param {string} type\n* @returns {string|module:svgcanvas.PaintOptions|Float|module:jGraduate~Paint} The current fill/stroke option\n*/\nthis.getColor = function (type) {\n  return curProperties[type];\n};\n\n/**\n* Change the current stroke/fill color/gradient value.\n* @function module:svgcanvas.SvgCanvas#setColor\n* @param {string} type - String indicating fill or stroke\n* @param {string} val - The value to set the stroke attribute to\n* @param {boolean} preventUndo - Boolean indicating whether or not this should be an undoable option\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setColor = function (type, val, preventUndo) {\n  curShape[type] = val;\n  curProperties[type + '_paint'] = {type: 'solidColor'};\n  const elems = [];\n  /**\n   *\n   * @param {Element} e\n   * @returns {undefined}\n   */\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else if (type === 'fill') {\n        if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {\n          elems.push(elem);\n        }\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    if (!preventUndo) {\n      changeSelectedAttribute(type, val, elems);\n      call('changed', elems);\n    } else {\n      changeSelectedAttributeNoUndo(type, val, elems);\n    }\n  }\n};\n\n/**\n* Apply the current gradient to selected element's fill or stroke.\n* @function module:svgcanvas.SvgCanvas#setGradient\n* @param {\"fill\"|\"stroke\"} type - String indicating \"fill\" or \"stroke\" to apply to an element\n* @returns {undefined}\n*/\nconst setGradient = this.setGradient = function (type) {\n  if (!curProperties[type + '_paint'] || curProperties[type + '_paint'].type === 'solidColor') { return; }\n  let grad = canvas[type + 'Grad'];\n  // find out if there is a duplicate gradient already in the defs\n  const duplicateGrad = findDuplicateGradient(grad);\n  const defs = findDefs();\n  // no duplicate found, so import gradient into defs\n  if (!duplicateGrad) {\n    // const origGrad = grad;\n    grad = defs.appendChild(svgdoc.importNode(grad, true));\n    // get next id and set it on the grad\n    grad.id = getNextId();\n  } else { // use existing gradient\n    grad = duplicateGrad;\n  }\n  canvas.setColor(type, 'url(#' + grad.id + ')');\n};\n\n/**\n* Check if exact gradient already exists.\n* @function module:svgcanvas~findDuplicateGradient\n* @param {SVGGradientElement} grad - The gradient DOM element to compare to others\n* @returns {SVGGradientElement} The existing gradient if found, `null` if not\n*/\nconst findDuplicateGradient = function (grad) {\n  const defs = findDefs();\n  const existingGrads = $(defs).find('linearGradient, radialGradient');\n  let i = existingGrads.length;\n  const radAttrs = ['r', 'cx', 'cy', 'fx', 'fy'];\n  while (i--) {\n    const og = existingGrads[i];\n    if (grad.tagName === 'linearGradient') {\n      if (grad.getAttribute('x1') !== og.getAttribute('x1') ||\n        grad.getAttribute('y1') !== og.getAttribute('y1') ||\n        grad.getAttribute('x2') !== og.getAttribute('x2') ||\n        grad.getAttribute('y2') !== og.getAttribute('y2')\n      ) {\n        continue;\n      }\n    } else {\n      const gradAttrs = $(grad).attr(radAttrs);\n      const ogAttrs = $(og).attr(radAttrs);\n\n      let diff = false;\n      $.each(radAttrs, function (j, attr) {\n        if (gradAttrs[attr] !== ogAttrs[attr]) { diff = true; }\n      });\n\n      if (diff) { continue; }\n    }\n\n    // else could be a duplicate, iterate through stops\n    const stops = grad.getElementsByTagNameNS(NS.SVG, 'stop');\n    const ostops = og.getElementsByTagNameNS(NS.SVG, 'stop');\n\n    if (stops.length !== ostops.length) {\n      continue;\n    }\n\n    let j = stops.length;\n    while (j--) {\n      const stop = stops[j];\n      const ostop = ostops[j];\n\n      if (stop.getAttribute('offset') !== ostop.getAttribute('offset') ||\n        stop.getAttribute('stop-opacity') !== ostop.getAttribute('stop-opacity') ||\n        stop.getAttribute('stop-color') !== ostop.getAttribute('stop-color')) {\n        break;\n      }\n    }\n\n    if (j === -1) {\n      return og;\n    }\n  } // for each gradient in defs\n\n  return null;\n};\n\n/**\n* Set a color/gradient to a fill/stroke.\n* @function module:svgcanvas.SvgCanvas#setPaint\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @param {module:jGraduate.jGraduatePaintOptions} paint - The jGraduate paint object to apply\n* @returns {undefined}\n*/\nthis.setPaint = function (type, paint) {\n  // make a copy\n  const p = new $.jGraduate.Paint(paint);\n  this.setPaintOpacity(type, p.alpha / 100, true);\n\n  // now set the current paint object\n  curProperties[type + '_paint'] = p;\n  switch (p.type) {\n  case 'solidColor':\n    this.setColor(type, p.solidColor !== 'none' ? '#' + p.solidColor : 'none');\n    break;\n  case 'linearGradient':\n  case 'radialGradient':\n    canvas[type + 'Grad'] = p[p.type];\n    setGradient(type);\n    break;\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setStrokePaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setStrokePaint = function (paint) {\n  this.setPaint('stroke', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#setFillPaint\n* @param {module:jGraduate~Paint} paint\n* @returns {undefined}\n*/\nthis.setFillPaint = function (paint) {\n  this.setPaint('fill', paint);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeWidth\n* @returns {Float|string} The current stroke-width value\n*/\nthis.getStrokeWidth = function () {\n  return curProperties.stroke_width;\n};\n\n/**\n* Sets the stroke width for the current selected elements.\n* When attempting to set a line's width to 0, this changes it to 1 instead.\n* @function module:svgcanvas.SvgCanvas#setStrokeWidth\n* @param {Float} val - A Float indicating the new stroke width value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeWidth = function (val) {\n  if (val === 0 && ['line', 'path'].includes(currentMode)) {\n    canvas.setStrokeWidth(1);\n    return;\n  }\n  curProperties.stroke_width = val;\n\n  const elems = [];\n  /**\n   *\n   * @param {Element} e\n   * @returns {undefined}\n   */\n  function addNonG (e) {\n    if (e.nodeName !== 'g') {\n      elems.push(e);\n    }\n  }\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, addNonG);\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute('stroke-width', val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* Set the given stroke-related attribute the given value for selected elements.\n* @function module:svgcanvas.SvgCanvas#setStrokeAttr\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the attribute value\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setStrokeAttr = function (attr, val) {\n  curShape[attr.replace('-', '_')] = val;\n  const elems = [];\n\n  let i = selectedElements.length;\n  while (i--) {\n    const elem = selectedElements[i];\n    if (elem) {\n      if (elem.tagName === 'g') {\n        walkTree(elem, function (e) { if (e.nodeName !== 'g') { elems.push(e); } });\n      } else {\n        elems.push(elem);\n      }\n    }\n  }\n  if (elems.length > 0) {\n    changeSelectedAttribute(attr, val, elems);\n    call('changed', selectedElements);\n  }\n};\n\n/**\n* @typedef {PlainObject} module:svgcanvas.StyleOptions\n* @property {string} fill\n* @property {Float} fill_opacity\n* @property {string} stroke\n* @property {Float} stroke_width\n* @property {string} stroke_dasharray\n* @property {string} stroke_linejoin\n* @property {string} stroke_linecap\n* @property {Float} stroke_opacity\n* @property {Float} opacity\n*/\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStyle\n* @returns {module:svgcanvas.StyleOptions} current style options\n*/\nthis.getStyle = function () {\n  return curShape;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getOpacity\n* @returns {Float} the current opacity\n*/\nthis.getOpacity = getOpacity;\n\n/**\n* Sets the given opacity on the current selected elements.\n* @function module:svgcanvas.SvgCanvas#setOpacity\n* @param {string} val\n* @returns {undefined}\n*/\nthis.setOpacity = function (val) {\n  curShape.opacity = val;\n  changeSelectedAttribute('opacity', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFillOpacity\n* @returns {Float} the current fill opacity\n*/\nthis.getFillOpacity = function () {\n  return curShape.fill_opacity;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getStrokeOpacity\n* @returns {string} the current stroke opacity\n*/\nthis.getStrokeOpacity = function () {\n  return curShape.stroke_opacity;\n};\n\n/**\n* Sets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#setPaintOpacity\n* @param {string} type - String with \"fill\" or \"stroke\"\n* @param {Float} val - Float with the new opacity value\n* @param {boolean} preventUndo - Indicates whether or not this should be an undoable action\n* @returns {undefined}\n*/\nthis.setPaintOpacity = function (type, val, preventUndo) {\n  curShape[type + '_opacity'] = val;\n  if (!preventUndo) {\n    changeSelectedAttribute(type + '-opacity', val);\n  } else {\n    changeSelectedAttributeNoUndo(type + '-opacity', val);\n  }\n};\n\n/**\n* Gets the current fill/stroke opacity.\n* @function module:svgcanvas.SvgCanvas#getPaintOpacity\n* @param {\"fill\"|\"stroke\"} type - String with \"fill\" or \"stroke\"\n* @returns {Float} Fill/stroke opacity\n*/\nthis.getPaintOpacity = function (type) {\n  return type === 'fill' ? this.getFillOpacity() : this.getStrokeOpacity();\n};\n\n/**\n* Gets the `stdDeviation` blur value of the given element.\n* @function module:svgcanvas.SvgCanvas#getBlur\n* @param {Element} elem - The element to check the blur value for\n* @returns {string} stdDeviation blur attribute value\n*/\nthis.getBlur = function (elem) {\n  let val = 0;\n  // const elem = selectedElements[0];\n\n  if (elem) {\n    const filterUrl = elem.getAttribute('filter');\n    if (filterUrl) {\n      const blur = getElem(elem.id + '_blur');\n      if (blur) {\n        val = blur.firstChild.getAttribute('stdDeviation');\n      }\n    }\n  }\n  return val;\n};\n\n(function () {\nlet curCommand = null;\nlet filter = null;\nlet filterHidden = false;\n\n/**\n* Sets the `stdDeviation` blur value on the selected element without being undoable.\n* @function module:svgcanvas.SvgCanvas#setBlurNoUndo\n* @param {Float} val - The new `stdDeviation` value\n* @returns {undefined}\n*/\ncanvas.setBlurNoUndo = function (val) {\n  if (!filter) {\n    canvas.setBlur(val);\n    return;\n  }\n  if (val === 0) {\n    // Don't change the StdDev, as that will hide the element.\n    // Instead, just remove the value for \"filter\"\n    changeSelectedAttributeNoUndo('filter', '');\n    filterHidden = true;\n  } else {\n    const elem = selectedElements[0];\n    if (filterHidden) {\n      changeSelectedAttributeNoUndo('filter', 'url(#' + elem.id + '_blur)');\n    }\n    if (isWebkit()) {\n      // console.log('e', elem); // eslint-disable-line no-console\n      elem.removeAttribute('filter');\n      elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');\n    }\n    changeSelectedAttributeNoUndo('stdDeviation', val, [filter.firstChild]);\n    canvas.setBlurOffsets(filter, val);\n  }\n};\n\n/**\n *\n * @returns {undefined}\n */\nfunction finishChange () {\n  const bCmd = canvas.undoMgr.finishUndoableChange();\n  curCommand.addSubCommand(bCmd);\n  addCommandToHistory(curCommand);\n  curCommand = null;\n  filter = null;\n}\n\n/**\n* Sets the `x`, `y`, `width`, `height` values of the filter element in order to\n* make the blur not be clipped. Removes them if not neeeded.\n* @function module:svgcanvas.SvgCanvas#setBlurOffsets\n* @param {Element} filterElem - The filter DOM element to update\n* @param {Float} stdDev - The standard deviation value on which to base the offset size\n* @returns {undefined}\n*/\ncanvas.setBlurOffsets = function (filterElem, stdDev) {\n  if (stdDev > 3) {\n    // TODO: Create algorithm here where size is based on expected blur\n    assignAttributes(filterElem, {\n      x: '-50%',\n      y: '-50%',\n      width: '200%',\n      height: '200%'\n    }, 100);\n  // Removing these attributes hides text in Chrome (see Issue 579)\n  } else if (!isWebkit()) {\n      filterElem.removeAttribute('x');\n      filterElem.removeAttribute('y');\n      filterElem.removeAttribute('width');\n      filterElem.removeAttribute('height');\n  }\n};\n\n/**\n* Adds/updates the blur filter to the selected element.\n* @function module:svgcanvas.SvgCanvas#setBlur\n* @param {Float} val - Float with the new `stdDeviation` blur value\n* @param {boolean} complete - Whether or not the action should be completed (to add to the undo manager)\n* @returns {undefined}\n*/\ncanvas.setBlur = function (val, complete) {\n  if (curCommand) {\n    finishChange();\n    return;\n  }\n\n  // Looks for associated blur, creates one if not found\n  const elem = selectedElements[0];\n  const elemId = elem.id;\n  filter = getElem(elemId + '_blur');\n\n  val -= 0;\n\n  const batchCmd = new BatchCommand();\n\n  // Blur found!\n  if (filter) {\n    if (val === 0) {\n      filter = null;\n    }\n  } else {\n    // Not found, so create\n    const newblur = addSVGElementFromJson({element: 'feGaussianBlur',\n      attr: {\n        in: 'SourceGraphic',\n        stdDeviation: val\n      }\n    });\n\n    filter = addSVGElementFromJson({element: 'filter',\n      attr: {\n        id: elemId + '_blur'\n      }\n    });\n\n    filter.append(newblur);\n    findDefs().append(filter);\n\n    batchCmd.addSubCommand(new InsertElementCommand(filter));\n  }\n\n  const changes = {filter: elem.getAttribute('filter')};\n\n  if (val === 0) {\n    elem.removeAttribute('filter');\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    return;\n  }\n\n  changeSelectedAttribute('filter', 'url(#' + elemId + '_blur)');\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n  canvas.setBlurOffsets(filter, val);\n\n  curCommand = batchCmd;\n  canvas.undoMgr.beginUndoableChange('stdDeviation', [filter ? filter.firstChild : null]);\n  if (complete) {\n    canvas.setBlurNoUndo(val);\n    finishChange();\n  }\n};\n}());\n\n/**\n* Check whether selected element is bold or not.\n* @function module:svgcanvas.SvgCanvas#getBold\n* @returns {boolean} Indicates whether or not element is bold\n*/\nthis.getBold = function () {\n  // should only have one element selected\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    return (selected.getAttribute('font-weight') === 'bold');\n  }\n  return false;\n};\n\n/**\n* Make the selected element bold or normal.\n* @function module:svgcanvas.SvgCanvas#setBold\n* @param {boolean} b - Indicates bold (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setBold = function (b) {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Check whether selected element is in italics or not.\n* @function module:svgcanvas.SvgCanvas#getItalic\n* @returns {boolean} Indicates whether or not element is italic\n*/\nthis.getItalic = function () {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    return (selected.getAttribute('font-style') === 'italic');\n  }\n  return false;\n};\n\n/**\n* Make the selected element italic or normal.\n* @function module:svgcanvas.SvgCanvas#setItalic\n* @param {boolean} i - Indicates italic (`true`) or normal (`false`)\n* @returns {undefined}\n*/\nthis.setItalic = function (i) {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'text' &&\n    isNullish(selectedElements[1])) {\n    changeSelectedAttribute('font-style', i ? 'italic' : 'normal');\n  }\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontFamily\n* @returns {string} The current font family\n*/\nthis.getFontFamily = function () {\n  return curText.font_family;\n};\n\n/**\n* Set the new font family.\n* @function module:svgcanvas.SvgCanvas#setFontFamily\n* @param {string} val - String with the new font family\n* @returns {undefined}\n*/\nthis.setFontFamily = function (val) {\n  curText.font_family = val;\n  changeSelectedAttribute('font-family', val);\n  if (selectedElements[0] && !selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* Set the new font color.\n* @function module:svgcanvas.SvgCanvas#setFontColor\n* @param {string} val - String with the new font color\n* @returns {undefined}\n*/\nthis.setFontColor = function (val) {\n  curText.fill = val;\n  changeSelectedAttribute('fill', val);\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontColor\n* @returns {string} The current font color\n*/\nthis.getFontColor = function () {\n  return curText.fill;\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getFontSize\n* @returns {Float} The current font size\n*/\nthis.getFontSize = function () {\n  return curText.font_size;\n};\n\n/**\n* Applies the given font size to the selected element.\n* @function module:svgcanvas.SvgCanvas#setFontSize\n* @param {Float} val - Float with the new font size\n* @returns {undefined}\n*/\nthis.setFontSize = function (val) {\n  curText.font_size = val;\n  changeSelectedAttribute('font-size', val);\n  if (!selectedElements[0].textContent) {\n    textActions.setCursor();\n  }\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#getText\n* @returns {string} The current text (`textContent`) of the selected element\n*/\nthis.getText = function () {\n  const selected = selectedElements[0];\n  if (isNullish(selected)) { return ''; }\n  return selected.textContent;\n};\n\n/**\n* Updates the text element with the given string.\n* @function module:svgcanvas.SvgCanvas#setTextContent\n* @param {string} val - String with the new text\n* @returns {undefined}\n*/\nthis.setTextContent = function (val) {\n  changeSelectedAttribute('#text', val);\n  textActions.init(val);\n  textActions.setCursor();\n};\n\n/**\n* Sets the new image URL for the selected image element. Updates its size if\n* a new URL is given.\n* @function module:svgcanvas.SvgCanvas#setImageURL\n* @param {string} val - String with the image URL/path\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setImageURL = function (val) {\n  const elem = selectedElements[0];\n  if (!elem) { return; }\n\n  const attrs = $(elem).attr(['width', 'height']);\n  const setsize = (!attrs.width || !attrs.height);\n\n  const curHref = getHref(elem);\n\n  // Do nothing if no URL change or size change\n  if (curHref === val && !setsize) {\n    return;\n  }\n\n  const batchCmd = new BatchCommand('Change Image URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  $(new Image()).load(function () {\n    const changes = $(elem).attr(['width', 'height']);\n\n    $(elem).attr({\n      width: this.width,\n      height: this.height\n    });\n\n    selectorManager.requestSelector(elem).resize();\n\n    batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));\n    addCommandToHistory(batchCmd);\n    call('changed', [elem]);\n  }).attr('src', val);\n};\n\n/**\n* Sets the new link URL for the selected anchor element.\n* @function module:svgcanvas.SvgCanvas#setLinkURL\n* @param {string} val - String with the link URL/path\n* @returns {undefined}\n*/\nthis.setLinkURL = function (val) {\n  let elem = selectedElements[0];\n  if (!elem) { return; }\n  if (elem.tagName !== 'a') {\n    // See if parent is an anchor\n    const parentsA = $(elem).parents('a');\n    if (parentsA.length) {\n      elem = parentsA[0];\n    } else {\n      return;\n    }\n  }\n\n  const curHref = getHref(elem);\n\n  if (curHref === val) { return; }\n\n  const batchCmd = new BatchCommand('Change Link URL');\n\n  setHref(elem, val);\n  batchCmd.addSubCommand(new ChangeElementCommand(elem, {\n    '#href': curHref\n  }));\n\n  addCommandToHistory(batchCmd);\n};\n\n/**\n* Sets the `rx` and `ry` values to the selected `rect` element\n* to change its corner radius.\n* @function module:svgcanvas.SvgCanvas#setRectRadius\n* @param {string|Float} val - The new radius\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.setRectRadius = function (val) {\n  const selected = selectedElements[0];\n  if (!isNullish(selected) && selected.tagName === 'rect') {\n    const r = selected.getAttribute('rx');\n    if (r !== String(val)) {\n      selected.setAttribute('rx', val);\n      selected.setAttribute('ry', val);\n      addCommandToHistory(new ChangeElementCommand(selected, {rx: r, ry: r}, 'Radius'));\n      call('changed', [selected]);\n    }\n  }\n};\n\n/**\n* Wraps the selected element(s) in an anchor element or converts group to one.\n* @function module:svgcanvas.SvgCanvas#makeHyperlink\n* @param {string} url\n* @returns {undefined}\n*/\nthis.makeHyperlink = function (url) {\n  canvas.groupSelectedElements('a', url);\n\n  // TODO: If element is a single \"g\", convert to \"a\"\n  //  if (selectedElements.length > 1 && selectedElements[1]) {\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#removeHyperlink\n* @returns {undefined}\n*/\nthis.removeHyperlink = function () {\n  canvas.ungroupSelectedElement();\n};\n\n/**\n* Group: Element manipulation\n*/\n\n/**\n* Sets the new segment type to the selected segment(s).\n* @function module:svgcanvas.SvgCanvas#setSegType\n* @param {Integer} newType - New segment type. See {@link https://www.w3.org/TR/SVG/paths.html#InterfaceSVGPathSeg} for list\n* @returns {undefined}\n*/\nthis.setSegType = function (newType) {\n  pathActions.setSegType(newType);\n};\n\n/**\n* Convert selected element to a path, or get the BBox of an element-as-path.\n* @function module:svgcanvas.SvgCanvas#convertToPath\n* @todo (codedread): Remove the getBBox argument and split this function into two.\n* @param {Element} elem - The DOM element to be converted\n* @param {boolean} getBBox - Boolean on whether or not to only return the path's BBox\n* @returns {undefined|DOMRect|false|SVGPathElement|null} If the getBBox flag is true, the resulting path's bounding box object.\n* Otherwise the resulting path element is returned.\n*/\nthis.convertToPath = function (elem, getBBox) {\n  if (isNullish(elem)) {\n    const elems = selectedElements;\n    $.each(elems, function (i, el) {\n      if (el) { canvas.convertToPath(el); }\n    });\n    return undefined;\n  }\n  if (getBBox) {\n    return getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions);\n  }\n  // TODO: Why is this applying attributes from curShape, then inside utilities.convertToPath it's pulling addition attributes from elem?\n  // TODO: If convertToPath is called with one elem, curShape and elem are probably the same; but calling with multiple is a bug or cool feature.\n  const attrs = {\n    fill: curShape.fill,\n    'fill-opacity': curShape.fill_opacity,\n    stroke: curShape.stroke,\n    'stroke-width': curShape.stroke_width,\n    'stroke-dasharray': curShape.stroke_dasharray,\n    'stroke-linejoin': curShape.stroke_linejoin,\n    'stroke-linecap': curShape.stroke_linecap,\n    'stroke-opacity': curShape.stroke_opacity,\n    opacity: curShape.opacity,\n    visibility: 'hidden'\n  };\n  return convertToPath(elem, attrs, addSVGElementFromJson, pathActions, clearSelection, addToSelection, hstry, addCommandToHistory);\n};\n\n/**\n* This function makes the changes to the elements. It does not add the change\n* to the history stack.\n* @param {string} attr - Attribute name\n* @param {string|Float} newValue - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttributeNoUndo = function (attr, newValue, elems) {\n  if (currentMode === 'pathedit') {\n    // Editing node\n    pathActions.moveNode(attr, newValue);\n  }\n  elems = elems || selectedElements;\n  let i = elems.length;\n  const noXYElems = ['g', 'polyline', 'path'];\n  // const goodGAttrs = ['transform', 'opacity', 'filter'];\n\n  while (i--) {\n    let elem = elems[i];\n    if (isNullish(elem)) { continue; }\n\n    // Set x,y vals on elements that don't have them\n    if ((attr === 'x' || attr === 'y') && noXYElems.includes(elem.tagName)) {\n      const bbox = getStrokedBBoxDefaultVisible([elem]);\n      const diffX = attr === 'x' ? newValue - bbox.x : 0;\n      const diffY = attr === 'y' ? newValue - bbox.y : 0;\n      canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);\n      continue;\n    }\n\n    // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky\n    // TODO: FIXME: Missing statement body\n    // if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}\n    let oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);\n    if (isNullish(oldval)) { oldval = ''; }\n    if (oldval !== String(newValue)) {\n      if (attr === '#text') {\n        // const oldW = utilsGetBBox(elem).width;\n        elem.textContent = newValue;\n\n        // FF bug occurs on on rotated elements\n        if ((/rotate/).test(elem.getAttribute('transform'))) {\n          elem = ffClone(elem);\n        }\n        // Hoped to solve the issue of moving text with text-anchor=\"start\",\n        // but this doesn't actually fix it. Hopefully on the right track, though. -Fyrd\n        // const box = getBBox(elem), left = box.x, top = box.y, {width, height} = box,\n        //   dx = width - oldW, dy = 0;\n        // const angle = getRotationAngle(elem, true);\n        // if (angle) {\n        //   const r = Math.sqrt(dx * dx + dy * dy);\n        //   const theta = Math.atan2(dy, dx) - angle;\n        //   dx = r * Math.cos(theta);\n        //   dy = r * Math.sin(theta);\n        //\n        //   elem.setAttribute('x', elem.getAttribute('x') - dx);\n        //   elem.setAttribute('y', elem.getAttribute('y') - dy);\n        // }\n      } else if (attr === '#href') {\n        setHref(elem, newValue);\n      } else { elem.setAttribute(attr, newValue); }\n\n      // Go into \"select\" mode for text changes\n      // NOTE: Important that this happens AFTER elem.setAttribute() or else attributes like\n      // font-size can get reset to their old value, ultimately by svgEditor.updateContextPanel(),\n      // after calling textActions.toSelectMode() below\n      if (currentMode === 'textedit' && attr !== '#text' && elem.textContent.length) {\n        textActions.toSelectMode(elem);\n      }\n\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(elem);\n      // }\n\n      // Use the Firefox ffClone hack for text elements with gradients or\n      // where other text attributes are changed.\n      if (isGecko() && elem.nodeName === 'text' && (/rotate/).test(elem.getAttribute('transform'))) {\n        if (String(newValue).startsWith('url') || (['font-size', 'font-family', 'x', 'y'].includes(attr) && elem.textContent)) {\n          elem = ffClone(elem);\n        }\n      }\n      // Timeout needed for Opera & Firefox\n      // codedread: it is now possible for this function to be called with elements\n      // that are not in the selectedElements array, we need to only request a\n      // selector if the element is in that array\n      if (selectedElements.includes(elem)) {\n        setTimeout(function () {\n          // Due to element replacement, this element may no longer\n          // be part of the DOM\n          if (!elem.parentNode) { return; }\n          selectorManager.requestSelector(elem).resize();\n        }, 0);\n      }\n      // if this element was rotated, and we changed the position of this element\n      // we need to update the rotational transform attribute\n      const angle = getRotationAngle(elem);\n      if (angle !== 0 && attr !== 'transform') {\n        const tlist = getTransformList(elem);\n        let n = tlist.numberOfItems;\n        while (n--) {\n          const xform = tlist.getItem(n);\n          if (xform.type === 4) {\n            // remove old rotate\n            tlist.removeItem(n);\n\n            const box = utilsGetBBox(elem);\n            const center = transformPoint(box.x + box.width / 2, box.y + box.height / 2, transformListToTransform(tlist).matrix);\n            const cx = center.x,\n              cy = center.y;\n            const newrot = svgroot.createSVGTransform();\n            newrot.setRotate(angle, cx, cy);\n            tlist.insertItemBefore(newrot, n);\n            break;\n          }\n        }\n      }\n    } // if oldValue != newValue\n  } // for each elem\n};\n\n/**\n* Change the given/selected element and add the original value to the history stack.\n* If you want to change all `selectedElements`, ignore the `elems` argument.\n* If you want to change only a subset of `selectedElements`, then send the\n* subset to this function in the `elems` argument.\n* @function module:svgcanvas.SvgCanvas#changeSelectedAttribute\n* @param {string} attr - String with the attribute name\n* @param {string|Float} val - String or number with the new attribute value\n* @param {Element[]} elems - The DOM elements to apply the change to\n* @returns {undefined}\n*/\nconst changeSelectedAttribute = this.changeSelectedAttribute = function (attr, val, elems) {\n  elems = elems || selectedElements;\n  canvas.undoMgr.beginUndoableChange(attr, elems);\n  // const i = elems.length;\n\n  changeSelectedAttributeNoUndo(attr, val, elems);\n\n  const batchCmd = canvas.undoMgr.finishUndoableChange();\n  if (!batchCmd.isEmpty()) {\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack.\n* @function module:svgcanvas.SvgCanvas#deleteSelectedElements\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.deleteSelectedElements = function () {\n  const batchCmd = new BatchCommand('Delete Elements');\n  const len = selectedElements.length;\n  const selectedCopy = []; // selectedElements is being deleted\n\n  for (let i = 0; i < len; ++i) {\n    const selected = selectedElements[i];\n    if (isNullish(selected)) { break; }\n\n    let parent = selected.parentNode;\n    let t = selected;\n\n    // this will unselect the element and remove the selectedOutline\n    selectorManager.releaseSelector(t);\n\n    // Remove the path if present.\n    pathModule.removePath_(t.id);\n\n    // Get the parent if it's a single-child anchor\n    if (parent.tagName === 'a' && parent.childNodes.length === 1) {\n      t = parent;\n      parent = parent.parentNode;\n    }\n\n    const {nextSibling} = t;\n    const elem = parent.removeChild(t);\n    selectedCopy.push(selected); // for the copy\n    batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, parent));\n  }\n  selectedElements = [];\n\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n  call('changed', selectedCopy);\n  clearSelection();\n};\n\n/**\n* Removes all selected elements from the DOM and adds the change to the\n* history stack. Remembers removed elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#cutSelectedElements\n* @returns {undefined}\n*/\nthis.cutSelectedElements = function () {\n  canvas.copySelectedElements();\n  canvas.deleteSelectedElements();\n};\n\n/**\n* Remembers the current selected elements on the clipboard.\n* @function module:svgcanvas.SvgCanvas#copySelectedElements\n* @returns {undefined}\n*/\nthis.copySelectedElements = function () {\n  localStorage.setItem('svgedit_clipboard', JSON.stringify(\n    selectedElements.map(function (x) { return getJsonFromSvgElement(x); })\n  ));\n\n  $('#cmenu_canvas').enableContextMenuItems('#paste,#paste_in_place');\n};\n\n/**\n* @function module:svgcanvas.SvgCanvas#pasteElements\n* @param {\"in_place\"|\"point\"|undefined} type\n* @param {Integer|undefined} x Expected if type is \"point\"\n* @param {Integer|undefined} y Expected if type is \"point\"\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @fires module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n* @returns {undefined}\n*/\nthis.pasteElements = function (type, x, y) {\n  let clipb = JSON.parse(localStorage.getItem('svgedit_clipboard'));\n  let len = clipb.length;\n  if (!len) { return; }\n\n  const pasted = [];\n  const batchCmd = new BatchCommand('Paste elements');\n  // const drawing = getCurrentDrawing();\n  /**\n  * @typedef {PlainObject.<string, string>} module:svgcanvas.ChangedIDs\n  */\n  /**\n   * @type {module:svgcanvas.ChangedIDs}\n   */\n  const changedIDs = {};\n\n  // Recursively replace IDs and record the changes\n  /**\n   *\n   * @param {module:svgcanvas.SVGAsJSON} elem\n   * @returns {undefined}\n   */\n  function checkIDs (elem) {\n    if (elem.attr && elem.attr.id) {\n      changedIDs[elem.attr.id] = getNextId();\n      elem.attr.id = changedIDs[elem.attr.id];\n    }\n    if (elem.children) elem.children.forEach(checkIDs);\n  }\n  clipb.forEach(checkIDs);\n\n  // Give extensions like the connector extension a chance to reflect new IDs and remove invalid elements\n  /**\n  * Triggered when `pasteElements` is called from a paste action (context menu or key)\n  * @event module:svgcanvas.SvgCanvas#event:ext-IDsUpdated\n  * @type {PlainObject}\n  * @property {module:svgcanvas.SVGAsJSON[]} elems\n  * @property {module:svgcanvas.ChangedIDs} changes Maps past ID (on attribute) to current ID\n  */\n  runExtensions(\n    'IDsUpdated',\n    /** @type {module:svgcanvas.SvgCanvas#event:ext-IDsUpdated} */\n    {elems: clipb, changes: changedIDs},\n    true\n  ).forEach(function (extChanges) {\n    if (!extChanges || !('remove' in extChanges)) return;\n\n    extChanges.remove.forEach(function (removeID) {\n      clipb = clipb.filter(function (clipBoardItem) {\n        return clipBoardItem.attr.id !== removeID;\n      });\n    });\n  });\n\n  // Move elements to lastClickPoint\n  while (len--) {\n    const elem = clipb[len];\n    if (!elem) { continue; }\n\n    const copy = addSVGElementFromJson(elem);\n    pasted.push(copy);\n    batchCmd.addSubCommand(new InsertElementCommand(copy));\n\n    restoreRefElems(copy);\n  }\n\n  selectOnly(pasted);\n\n  if (type !== 'in_place') {\n    let ctrX, ctrY;\n\n    if (!type) {\n      ctrX = lastClickPoint.x;\n      ctrY = lastClickPoint.y;\n    } else if (type === 'point') {\n      ctrX = x;\n      ctrY = y;\n    }\n\n    const bbox = getStrokedBBoxDefaultVisible(pasted);\n    const cx = ctrX - (bbox.x + bbox.width / 2),\n      cy = ctrY - (bbox.y + bbox.height / 2),\n      dx = [],\n      dy = [];\n\n    $.each(pasted, function (i, item) {\n      dx.push(cx);\n      dy.push(cy);\n    });\n\n    const cmd = canvas.moveSelectedElements(dx, dy, false);\n    if (cmd) batchCmd.addSubCommand(cmd);\n  }\n\n  addCommandToHistory(batchCmd);\n  call('changed', pasted);\n};\n\n/**\n* Wraps all the selected elements in a group (`g`) element.\n* @function module:svgcanvas.SvgCanvas#groupSelectedElements\n* @param {\"a\"|\"g\"} [type=\"g\"] - type of element to group into, defaults to `<g>`\n* @param {string} [urlArg]\n* @returns {undefined}\n*/\nthis.groupSelectedElements = function (type, urlArg) {\n  if (!type) { type = 'g'; }\n  let cmdStr = '';\n  let url;\n\n  switch (type) {\n  case 'a': {\n    cmdStr = 'Make hyperlink';\n    url = urlArg || '';\n    break;\n  } default: {\n    type = 'g';\n    cmdStr = 'Group Elements';\n    break;\n  }\n  }\n\n  const batchCmd = new BatchCommand(cmdStr);\n\n  // create and insert the group element\n  const g = addSVGElementFromJson({\n    element: type,\n    attr: {\n      id: getNextId()\n    }\n  });\n  if (type === 'a') {\n    setHref(g, url);\n  }\n  batchCmd.addSubCommand(new InsertElementCommand(g));\n\n  // now move all children into the group\n  let i = selectedElements.length;\n  while (i--) {\n    let elem = selectedElements[i];\n    if (isNullish(elem)) { continue; }\n\n    if (elem.parentNode.tagName === 'a' && elem.parentNode.childNodes.length === 1) {\n      elem = elem.parentNode;\n    }\n\n    const oldNextSibling = elem.nextSibling;\n    const oldParent = elem.parentNode;\n    g.append(elem);\n    batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n  }\n  if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n  // update selection\n  selectOnly([g], true);\n};\n\n/**\n* Pushes all appropriate parent group properties down to its children, then\n* removes them from the group.\n* @function module:svgcanvas.SvgCanvas#pushGroupProperties\n* @param {SVGAElement|SVGGElement} g\n* @param {boolean} undoable\n* @returns {BatchCommand|undefined}\n*/\nconst pushGroupProperties = this.pushGroupProperties = function (g, undoable) {\n  const children = g.childNodes;\n  const len = children.length;\n  const xform = g.getAttribute('transform');\n\n  const glist = getTransformList(g);\n  const m = transformListToTransform(glist).matrix;\n\n  const batchCmd = new BatchCommand('Push group properties');\n\n  // TODO: get all fill/stroke properties from the group that we are about to destroy\n  // \"fill\", \"fill-opacity\", \"fill-rule\", \"stroke\", \"stroke-dasharray\", \"stroke-dashoffset\",\n  // \"stroke-linecap\", \"stroke-linejoin\", \"stroke-miterlimit\", \"stroke-opacity\",\n  // \"stroke-width\"\n  // and then for each child, if they do not have the attribute (or the value is 'inherit')\n  // then set the child's attribute\n\n  const gangle = getRotationAngle(g);\n\n  const gattrs = $(g).attr(['filter', 'opacity']);\n  let gfilter, gblur, changes;\n  const drawing = getCurrentDrawing();\n\n  for (let i = 0; i < len; i++) {\n    const elem = children[i];\n\n    if (elem.nodeType !== 1) { continue; }\n\n    if (gattrs.opacity !== null && gattrs.opacity !== 1) {\n      // const c_opac = elem.getAttribute('opacity') || 1;\n      const newOpac = Math.round((elem.getAttribute('opacity') || 1) * gattrs.opacity * 100) / 100;\n      changeSelectedAttribute('opacity', newOpac, [elem]);\n    }\n\n    if (gattrs.filter) {\n      let cblur = this.getBlur(elem);\n      const origCblur = cblur;\n      if (!gblur) { gblur = this.getBlur(g); }\n      if (cblur) {\n        // Is this formula correct?\n        cblur = Number(gblur) + Number(cblur);\n      } else if (cblur === 0) {\n        cblur = gblur;\n      }\n\n      // If child has no current filter, get group's filter or clone it.\n      if (!origCblur) {\n        // Set group's filter to use first child's ID\n        if (!gfilter) {\n          gfilter = getRefElem(gattrs.filter);\n        } else {\n          // Clone the group's filter\n          gfilter = drawing.copyElem(gfilter);\n          findDefs().append(gfilter);\n        }\n      } else {\n        gfilter = getRefElem(elem.getAttribute('filter'));\n      }\n\n      // Change this in future for different filters\n      const suffix = (gfilter.firstChild.tagName === 'feGaussianBlur') ? 'blur' : 'filter';\n      gfilter.id = elem.id + '_' + suffix;\n      changeSelectedAttribute('filter', 'url(#' + gfilter.id + ')', [elem]);\n\n      // Update blur value\n      if (cblur) {\n        changeSelectedAttribute('stdDeviation', cblur, [gfilter.firstChild]);\n        canvas.setBlurOffsets(gfilter, cblur);\n      }\n    }\n\n    let chtlist = getTransformList(elem);\n\n    // Don't process gradient transforms\n    if (elem.tagName.includes('Gradient')) { chtlist = null; }\n\n    // Hopefully not a problem to add this. Necessary for elements like <desc/>\n    if (!chtlist) { continue; }\n\n    // Apparently <defs> can get get a transformlist, but we don't want it to have one!\n    if (elem.tagName === 'defs') { continue; }\n\n    if (glist.numberOfItems) {\n      // TODO: if the group's transform is just a rotate, we can always transfer the\n      // rotate() down to the children (collapsing consecutive rotates and factoring\n      // out any translates)\n      if (gangle && glist.numberOfItems === 1) {\n        // [Rg] [Rc] [Mc]\n        // we want [Tr] [Rc2] [Mc] where:\n        //  - [Rc2] is at the child's current center but has the\n        // sum of the group and child's rotation angles\n        //  - [Tr] is the equivalent translation that this child\n        // undergoes if the group wasn't there\n\n        // [Tr] = [Rg] [Rc] [Rc2_inv]\n\n        // get group's rotation matrix (Rg)\n        const rgm = glist.getItem(0).matrix;\n\n        // get child's rotation matrix (Rc)\n        let rcm = svgroot.createSVGMatrix();\n        const cangle = getRotationAngle(elem);\n        if (cangle) {\n          rcm = chtlist.getItem(0).matrix;\n        }\n\n        // get child's old center of rotation\n        const cbox = utilsGetBBox(elem);\n        const ceqm = transformListToTransform(chtlist).matrix;\n        const coldc = transformPoint(cbox.x + cbox.width / 2, cbox.y + cbox.height / 2, ceqm);\n\n        // sum group and child's angles\n        const sangle = gangle + cangle;\n\n        // get child's rotation at the old center (Rc2_inv)\n        const r2 = svgroot.createSVGTransform();\n        r2.setRotate(sangle, coldc.x, coldc.y);\n\n        // calculate equivalent translate\n        const trm = matrixMultiply(rgm, rcm, r2.matrix.inverse());\n\n        // set up tlist\n        if (cangle) {\n          chtlist.removeItem(0);\n        }\n\n        if (sangle) {\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(r2, 0);\n          } else {\n            chtlist.appendItem(r2);\n          }\n        }\n\n        if (trm.e || trm.f) {\n          const tr = svgroot.createSVGTransform();\n          tr.setTranslate(trm.e, trm.f);\n          if (chtlist.numberOfItems) {\n            chtlist.insertItemBefore(tr, 0);\n          } else {\n            chtlist.appendItem(tr);\n          }\n        }\n      } else { // more complicated than just a rotate\n        // transfer the group's transform down to each child and then\n        // call recalculateDimensions()\n        const oldxform = elem.getAttribute('transform');\n        changes = {};\n        changes.transform = oldxform || '';\n\n        const newxform = svgroot.createSVGTransform();\n\n        // [ gm ] [ chm ] = [ chm ] [ gm' ]\n        // [ gm' ] = [ chmInv ] [ gm ] [ chm ]\n        const chm = transformListToTransform(chtlist).matrix,\n          chmInv = chm.inverse();\n        const gm = matrixMultiply(chmInv, m, chm);\n        newxform.setMatrix(gm);\n        chtlist.appendItem(newxform);\n      }\n      const cmd = recalculateDimensions(elem);\n      if (cmd) { batchCmd.addSubCommand(cmd); }\n    }\n  }\n\n  // remove transform and make it undo-able\n  if (xform) {\n    changes = {};\n    changes.transform = xform;\n    g.setAttribute('transform', '');\n    g.removeAttribute('transform');\n    batchCmd.addSubCommand(new ChangeElementCommand(g, changes));\n  }\n\n  if (undoable && !batchCmd.isEmpty()) {\n    return batchCmd;\n  }\n  return undefined;\n};\n\n/**\n* Unwraps all the elements in a selected group (`g`) element. This requires\n* significant recalculations to apply group's transforms, etc. to its children.\n* @function module:svgcanvas.SvgCanvas#ungroupSelectedElement\n* @returns {undefined}\n*/\nthis.ungroupSelectedElement = function () {\n  let g = selectedElements[0];\n  if (!g) {\n    return;\n  }\n  if ($(g).data('gsvg') || $(g).data('symbol')) {\n    // Is svg, so actually convert to group\n    convertToGroup(g);\n    return;\n  }\n  if (g.tagName === 'use') {\n    // Somehow doesn't have data set, so retrieve\n    const symbol = getElem(getHref(g).substr(1));\n    $(g).data('symbol', symbol).data('ref', symbol);\n    convertToGroup(g);\n    return;\n  }\n  const parentsA = $(g).parents('a');\n  if (parentsA.length) {\n    g = parentsA[0];\n  }\n\n  // Look for parent \"a\"\n  if (g.tagName === 'g' || g.tagName === 'a') {\n    const batchCmd = new BatchCommand('Ungroup Elements');\n    const cmd = pushGroupProperties(g, true);\n    if (cmd) { batchCmd.addSubCommand(cmd); }\n\n    const parent = g.parentNode;\n    const anchor = g.nextSibling;\n    const children = new Array(g.childNodes.length);\n\n    let i = 0;\n    while (g.firstChild) {\n      let elem = g.firstChild;\n      const oldNextSibling = elem.nextSibling;\n      const oldParent = elem.parentNode;\n\n      // Remove child title elements\n      if (elem.tagName === 'title') {\n        const {nextSibling} = elem;\n        batchCmd.addSubCommand(new RemoveElementCommand(elem, nextSibling, oldParent));\n        elem.remove();\n        continue;\n      }\n\n      children[i++] = elem = parent.insertBefore(elem, anchor);\n      batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));\n    }\n\n    // remove the group from the selection\n    clearSelection();\n\n    // delete the group element (but make undo-able)\n    const gNextSibling = g.nextSibling;\n    g = parent.removeChild(g);\n    batchCmd.addSubCommand(new RemoveElementCommand(g, gNextSibling, parent));\n\n    if (!batchCmd.isEmpty()) { addCommandToHistory(batchCmd); }\n\n    // update selection\n    addToSelection(children);\n  }\n};\n\n/**\n* Repositions the selected element to the bottom in the DOM to appear on top of\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToTopSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToTopSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (!isNullish(selected)) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    t = t.parentNode.appendChild(t);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'top'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Repositions the selected element to the top in the DOM to appear under\n* other elements.\n* @function module:svgcanvas.SvgCanvas#moveToBottomSelectedElement\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveToBottomSelectedElement = function () {\n  const [selected] = selectedElements;\n  if (!isNullish(selected)) {\n    let t = selected;\n    const oldParent = t.parentNode;\n    const oldNextSibling = t.nextSibling;\n    let {firstChild} = t.parentNode;\n    if (firstChild.tagName === 'title') {\n      firstChild = firstChild.nextSibling;\n    }\n    // This can probably be removed, as the defs should not ever apppear\n    // inside a layer group\n    if (firstChild.tagName === 'defs') {\n      firstChild = firstChild.nextSibling;\n    }\n    t = t.parentNode.insertBefore(t, firstChild);\n    // If the element actually moved position, add the command and fire the changed\n    // event handler.\n    if (oldNextSibling !== t.nextSibling) {\n      addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'bottom'));\n      call('changed', [t]);\n    }\n  }\n};\n\n/**\n* Moves the select element up or down the stack, based on the visibly\n* intersecting elements.\n* @function module:svgcanvas.SvgCanvas#moveUpDownSelected\n* @param {\"Up\"|\"Down\"} dir - String that's either 'Up' or 'Down'\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {undefined}\n*/\nthis.moveUpDownSelected = function (dir) {\n  const selected = selectedElements[0];\n  if (!selected) { return; }\n\n  curBBoxes = [];\n  let closest, foundCur;\n  // jQuery sorts this list\n  const list = $(getIntersectionList(getStrokedBBoxDefaultVisible([selected]))).toArray();\n  if (dir === 'Down') { list.reverse(); }\n\n  $.each(list, function () {\n    if (!foundCur) {\n      if (this === selected) {\n        foundCur = true;\n      }\n      return true;\n    }\n    closest = this; // eslint-disable-line consistent-this\n    return false;\n  });\n  if (!closest) { return; }\n\n  const t = selected;\n  const oldParent = t.parentNode;\n  const oldNextSibling = t.nextSibling;\n  $(closest)[dir === 'Down' ? 'before' : 'after'](t);\n  // If the element actually moved position, add the command and fire the changed\n  // event handler.\n  if (oldNextSibling !== t.nextSibling) {\n    addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, 'Move ' + dir));\n    call('changed', [t]);\n  }\n};\n\n/**\n* Moves selected elements on the X/Y axis.\n* @function module:svgcanvas.SvgCanvas#moveSelectedElements\n* @param {Float} dx - Float with the distance to move on the x-axis\n* @param {Float} dy - Float with the distance to move on the y-axis\n* @param {boolean} undoable - Boolean indicating whether or not the action should be undoable\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @returns {BatchCommand|undefined} Batch command for the move\n*/\nthis.moveSelectedElements = function (dx, dy, undoable) {\n  // if undoable is not sent, default to true\n  // if single values, scale them to the zoom\n  if (dx.constructor !== Array) {\n    dx /= currentZoom;\n    dy /= currentZoom;\n  }\n  undoable = undoable || true;\n  const batchCmd = new BatchCommand('position');\n  let i = selectedElements.length;\n  while (i--) {\n    const selected = selectedElements[i];\n    if (!isNullish(selected)) {\n      // if (i === 0) {\n      //   selectedBBoxes[0] = utilsGetBBox(selected);\n      // }\n      // const b = {};\n      // for (const j in selectedBBoxes[i]) b[j] = selectedBBoxes[i][j];\n      // selectedBBoxes[i] = b;\n\n      const xform = svgroot.createSVGTransform();\n      const tlist = getTransformList(selected);\n\n      // dx and dy could be arrays\n      if (dx.constructor === Array) {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx[0];\n        //   selectedBBoxes[0].y += dy[0];\n        // }\n        xform.setTranslate(dx[i], dy[i]);\n      } else {\n        // if (i === 0) {\n        //   selectedBBoxes[0].x += dx;\n        //   selectedBBoxes[0].y += dy;\n        // }\n        xform.setTranslate(dx, dy);\n      }\n\n      if (tlist.numberOfItems) {\n        tlist.insertItemBefore(xform, 0);\n      } else {\n        tlist.appendItem(xform);\n      }\n\n      const cmd = recalculateDimensions(selected);\n      if (cmd) {\n        batchCmd.addSubCommand(cmd);\n      }\n\n      selectorManager.requestSelector(selected).resize();\n    }\n  }\n  if (!batchCmd.isEmpty()) {\n    if (undoable) {\n      addCommandToHistory(batchCmd);\n    }\n    call('changed', selectedElements);\n    return batchCmd;\n  }\n  return undefined;\n};\n\n/**\n* Create deep DOM copies (clones) of all selected elements and move them slightly\n* from their originals.\n* @function module:svgcanvas.SvgCanvas#cloneSelectedElements\n* @param {Float} x Float with the distance to move on the x-axis\n* @param {Float} y Float with the distance to move on the y-axis\n* @returns {undefined}\n*/\nthis.cloneSelectedElements = function (x, y) {\n  let i, elem;\n  const batchCmd = new BatchCommand('Clone Elements');\n  // find all the elements selected (stop at first null)\n  const len = selectedElements.length;\n  /**\n   * Sorts an array numerically and ascending.\n   * @param {Element} a\n   * @param {Element} b\n   * @returns {Integer}\n   */\n  function sortfunction (a, b) {\n    return ($(b).index() - $(a).index());\n  }\n  selectedElements.sort(sortfunction);\n  for (i = 0; i < len; ++i) {\n    elem = selectedElements[i];\n    if (isNullish(elem)) { break; }\n  }\n  // use slice to quickly get the subset of elements we need\n  const copiedElements = selectedElements.slice(0, i);\n  this.clearSelection(true);\n  // note that we loop in the reverse way because of the way elements are added\n  // to the selectedElements array (top-first)\n  const drawing = getCurrentDrawing();\n  i = copiedElements.length;\n  while (i--) {\n    // clone each element and replace it within copiedElements\n    elem = copiedElements[i] = drawing.copyElem(copiedElements[i]);\n    (currentGroup || drawing.getCurrentLayer()).append(elem);\n    batchCmd.addSubCommand(new InsertElementCommand(elem));\n  }\n\n  if (!batchCmd.isEmpty()) {\n    addToSelection(copiedElements.reverse()); // Need to reverse for correct selection-adding\n    this.moveSelectedElements(x, y, false);\n    addCommandToHistory(batchCmd);\n  }\n};\n\n/**\n* Aligns selected elements.\n* @function module:svgcanvas.SvgCanvas#alignSelectedElements\n* @param {string} type - String with single character indicating the alignment type\n* @param {\"selected\"|\"largest\"|\"smallest\"|\"page\"} relativeTo\n* @returns {undefined}\n*/\nthis.alignSelectedElements = function (type, relativeTo) {\n  const bboxes = []; // angles = [];\n  const len = selectedElements.length;\n  if (!len) { return; }\n  let minx = Number.MAX_VALUE, maxx = Number.MIN_VALUE,\n    miny = Number.MAX_VALUE, maxy = Number.MIN_VALUE;\n  let curwidth = Number.MIN_VALUE, curheight = Number.MIN_VALUE;\n  for (let i = 0; i < len; ++i) {\n    if (isNullish(selectedElements[i])) { break; }\n    const elem = selectedElements[i];\n    bboxes[i] = getStrokedBBoxDefaultVisible([elem]);\n\n    // now bbox is axis-aligned and handles rotation\n    switch (relativeTo) {\n    case 'smallest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth > bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight > bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    case 'largest':\n      if (((type === 'l' || type === 'c' || type === 'r') &&\n        (curwidth === Number.MIN_VALUE || curwidth < bboxes[i].width)) ||\n        ((type === 't' || type === 'm' || type === 'b') &&\n        (curheight === Number.MIN_VALUE || curheight < bboxes[i].height))\n      ) {\n        minx = bboxes[i].x;\n        miny = bboxes[i].y;\n        maxx = bboxes[i].x + bboxes[i].width;\n        maxy = bboxes[i].y + bboxes[i].height;\n        curwidth = bboxes[i].width;\n        curheight = bboxes[i].height;\n      }\n      break;\n    default: // 'selected'\n      if (bboxes[i].x < minx) { minx = bboxes[i].x; }\n      if (bboxes[i].y < miny) { miny = bboxes[i].y; }\n      if (bboxes[i].x + bboxes[i].width > maxx) { maxx = bboxes[i].x + bboxes[i].width; }\n      if (bboxes[i].y + bboxes[i].height > maxy) { maxy = bboxes[i].y + bboxes[i].height; }\n      break;\n    }\n  } // loop for each element to find the bbox and adjust min/max\n\n  if (relativeTo === 'page') {\n    minx = 0;\n    miny = 0;\n    maxx = canvas.contentW;\n    maxy = canvas.contentH;\n  }\n\n  const dx = new Array(len);\n  const dy = new Array(len);\n  for (let i = 0; i < len; ++i) {\n    if (isNullish(selectedElements[i])) { break; }\n    // const elem = selectedElements[i];\n    const bbox = bboxes[i];\n    dx[i] = 0;\n    dy[i] = 0;\n    switch (type) {\n    case 'l': // left (horizontal)\n      dx[i] = minx - bbox.x;\n      break;\n    case 'c': // center (horizontal)\n      dx[i] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);\n      break;\n    case 'r': // right (horizontal)\n      dx[i] = maxx - (bbox.x + bbox.width);\n      break;\n    case 't': // top (vertical)\n      dy[i] = miny - bbox.y;\n      break;\n    case 'm': // middle (vertical)\n      dy[i] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);\n      break;\n    case 'b': // bottom (vertical)\n      dy[i] = maxy - (bbox.y + bbox.height);\n      break;\n    }\n  }\n  this.moveSelectedElements(dx, dy);\n};\n\n/**\n* Group: Additional editor tools\n*/\n\n/**\n* @name module:svgcanvas.SvgCanvas#contentW\n* @type {Float}\n*/\nthis.contentW = getResolution().w;\n/**\n* @name module:svgcanvas.SvgCanvas#contentH\n* @type {Float}\n*/\nthis.contentH = getResolution().h;\n\n/**\n* @typedef {PlainObject} module:svgcanvas.CanvasInfo\n* @property {Float} x - The canvas' new x coordinate\n* @property {Float} y - The canvas' new y coordinate\n* @property {string} oldX - The canvas' old x coordinate\n* @property {string} oldY - The canvas' old y coordinate\n* @property {Float} d_x - The x position difference\n* @property {Float} d_y - The y position difference\n*/\n\n/**\n* Updates the editor canvas width/height/position after a zoom has occurred.\n* @function module:svgcanvas.SvgCanvas#updateCanvas\n* @param {Float} w - Float with the new width\n* @param {Float} h - Float with the new height\n* @fires module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n* @returns {module:svgcanvas.CanvasInfo}\n*/\nthis.updateCanvas = function (w, h) {\n  svgroot.setAttribute('width', w);\n  svgroot.setAttribute('height', h);\n  const bg = $('#canvasBackground')[0];\n  const oldX = svgcontent.getAttribute('x');\n  const oldY = svgcontent.getAttribute('y');\n  const x = ((w - this.contentW * currentZoom) / 2);\n  const y = ((h - this.contentH * currentZoom) / 2);\n\n  assignAttributes(svgcontent, {\n    width: this.contentW * currentZoom,\n    height: this.contentH * currentZoom,\n    x,\n    y,\n    viewBox: '0 0 ' + this.contentW + ' ' + this.contentH\n  });\n\n  assignAttributes(bg, {\n    width: svgcontent.getAttribute('width'),\n    height: svgcontent.getAttribute('height'),\n    x,\n    y\n  });\n\n  const bgImg = getElem('background_image');\n  if (bgImg) {\n    assignAttributes(bgImg, {\n      width: '100%',\n      height: '100%'\n    });\n  }\n\n  selectorManager.selectorParentGroup.setAttribute('transform', 'translate(' + x + ',' + y + ')');\n\n  /**\n  * Invoked upon updates to the canvas.\n  * @event module:svgcanvas.SvgCanvas#event:ext-canvasUpdated\n  * @type {PlainObject}\n  * @property {Integer} new_x\n  * @property {Integer} new_y\n  * @property {string} old_x (Of Integer)\n  * @property {string} old_y (Of Integer)\n  * @property {Integer} d_x\n  * @property {Integer} d_y\n  */\n  runExtensions(\n    'canvasUpdated',\n    /**\n     * @type {module:svgcanvas.SvgCanvas#event:ext-canvasUpdated}\n     */\n    {new_x: x, new_y: y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY}\n  );\n  return {x, y, old_x: oldX, old_y: oldY, d_x: x - oldX, d_y: y - oldY};\n};\n\n/**\n* Set the background of the editor (NOT the actual document).\n* @function module:svgcanvas.SvgCanvas#setBackground\n* @param {string} color - String with fill color to apply\n* @param {string} url - URL or path to image to use\n* @returns {undefined}\n*/\nthis.setBackground = function (color, url) {\n  const bg = getElem('canvasBackground');\n  const border = $(bg).find('rect')[0];\n  let bgImg = getElem('background_image');\n  border.setAttribute('fill', color);\n  if (url) {\n    if (!bgImg) {\n      bgImg = svgdoc.createElementNS(NS.SVG, 'image');\n      assignAttributes(bgImg, {\n        id: 'background_image',\n        width: '100%',\n        height: '100%',\n        preserveAspectRatio: 'xMinYMin',\n        style: 'pointer-events:none'\n      });\n    }\n    setHref(bgImg, url);\n    bg.append(bgImg);\n  } else if (bgImg) {\n    bgImg.remove();\n  }\n};\n\n/**\n* Select the next/previous element within the current layer.\n* @function module:svgcanvas.SvgCanvas#cycleElement\n* @param {boolean} next - true = next and false = previous element\n* @fires module:svgcanvas.SvgCanvas#event:selected\n* @returns {undefined}\n*/\nthis.cycleElement = function (next) {\n  let num;\n  const curElem = selectedElements[0];\n  let elem = false;\n  const allElems = getVisibleElements(currentGroup || getCurrentDrawing().getCurrentLayer());\n  if (!allElems.length) { return; }\n  if (isNullish(curElem)) {\n    num = next ? allElems.length - 1 : 0;\n    elem = allElems[num];\n  } else {\n    let i = allElems.length;\n    while (i--) {\n      if (allElems[i] === curElem) {\n        num = next ? i - 1 : i + 1;\n        if (num >= allElems.length) {\n          num = 0;\n        } else if (num < 0) {\n          num = allElems.length - 1;\n        }\n        elem = allElems[num];\n        break;\n      }\n    }\n  }\n  selectOnly([elem], true);\n  call('selected', selectedElements);\n};\n\nthis.clear();\n\n/**\n* @interface module:svgcanvas.PrivateMethods\n* @type {PlainObject}\n* @property {module:svgcanvas~addCommandToHistory} addCommandToHistory\n* @property {module:history.HistoryCommand} BatchCommand\n* @property {module:history.HistoryCommand} ChangeElementCommand\n* @property {module:utilities.decode64} decode64\n* @property {module:utilities.dropXMLInteralSubset} dropXMLInteralSubset\n* @property {module:utilities.encode64} encode64\n* @property {module:svgcanvas~ffClone} ffClone\n* @property {module:svgcanvas~findDuplicateGradient} findDuplicateGradient\n* @property {module:utilities.getPathBBox} getPathBBox\n* @property {module:units.getTypeMap} getTypeMap\n* @property {module:draw.identifyLayers} identifyLayers\n* @property {module:history.HistoryCommand} InsertElementCommand\n* @property {module:browser.isChrome} isChrome\n* @property {module:math.isIdentity} isIdentity\n* @property {module:browser.isIE} isIE\n* @property {module:svgcanvas~logMatrix} logMatrix\n* @property {module:history.HistoryCommand} MoveElementCommand\n* @property {module:namespaces.NS} NS\n* @property {module:utilities.preventClickDefault} preventClickDefault\n* @property {module:history.HistoryCommand} RemoveElementCommand\n* @property {module:SVGTransformList.SVGEditTransformList} SVGEditTransformList\n* @property {module:utilities.text2xml} text2xml\n* @property {module:math.transformBox} transformBox\n* @property {module:math.transformPoint} transformPoint\n* @property {module:utilities.walkTree} walkTree\n*/\n/**\n* @deprecated getPrivateMethods\n* Since all methods are/should be public somehow, this function should be removed;\n*  we might require `import` in place of this in the future once ES6 Modules\n*  widespread\n\n* Being able to access private methods publicly seems wrong somehow,\n* but currently appears to be the best way to allow testing and provide\n* access to them to plugins.\n* @function module:svgcanvas.SvgCanvas#getPrivateMethods\n* @returns {module:svgcanvas.PrivateMethods}\n*/\nthis.getPrivateMethods = function () {\n  const obj = {\n    addCommandToHistory,\n    BatchCommand,\n    ChangeElementCommand,\n    decode64,\n    dropXMLInteralSubset,\n    encode64,\n    ffClone,\n    findDefs,\n    findDuplicateGradient,\n    getElem,\n    getPathBBox,\n    getTypeMap,\n    getUrlFromAttr,\n    identifyLayers: draw.identifyLayers,\n    InsertElementCommand,\n    isChrome,\n    isIdentity,\n    isIE,\n    logMatrix,\n    MoveElementCommand,\n    NS,\n    preventClickDefault,\n    RemoveElementCommand,\n    SVGEditTransformList,\n    text2xml,\n    transformBox,\n    transformPoint,\n    walkTree\n  };\n  return obj;\n};\n  } // End constructor\n} // End class\n\nexport default SvgCanvas;\n","/**\n * jGraduate 0.4\n *\n * jQuery Plugin for a gradient picker\n *\n * @module jGraduate\n * @copyright 2010 Jeff Schiller {@link http://blog.codedread.com/}, 2010 Alexis Deveria {@link http://a.deveria.com/}\n *\n * @license Apache-2.0\n * @example\n * // The Paint object is described below.\n * $.jGraduate.Paint() // constructs a 'none' color\n * @example $.jGraduate.Paint({copy: o}) // creates a copy of the paint o\n * @example $.jGraduate.Paint({hex: '#rrggbb'}) // creates a solid color paint with hex = \"#rrggbb\"\n * @example $.jGraduate.Paint({linearGradient: o, a: 50}) // creates a linear gradient paint with opacity=0.5\n * @example $.jGraduate.Paint({radialGradient: o, a: 7}) // creates a radial gradient paint with opacity=0.07\n * @example $.jGraduate.Paint({hex: '#rrggbb', linearGradient: o}) // throws an exception?\n *\n*/\n\n/**\n  * The jQuery namespace.\n  * @external jQuery\n*/\n/**\n * The jQuery plugin namespace.\n * @namespace {PlainObject} fn\n * @memberof external:jQuery\n * @see {@link http://learn.jquery.com/plugins/|jQuery Plugins}\n */\n\nconst ns = {\n  svg: 'http://www.w3.org/2000/svg',\n  xlink: 'http://www.w3.org/1999/xlink'\n};\n\nif (!window.console) {\n  window.console = {\n    log (str) { /* */ },\n    dir (str) { /* */ }\n  };\n}\n\n/**\n* Adds {@link external:jQuery.jGraduate.Paint},\n* {@link external:jQuery.fn.jGraduateDefaults},\n* {@link external:jQuery.fn.jGraduate}.\n* @function module:jGraduate.jGraduate\n* @param {external:jQuery} $ The jQuery instance to wrap\n* @returns {external:jQuery}\n*/\nexport default function jQueryPluginJGraduate ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jGraduate.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.jGraduatePaintOptions\n  * @param {Float} [alpha]\n  * @param {module:jGraduate~Paint} [copy] Copy paint object\n  * @param {SVGLinearGradientElement} [linearGradient]\n  * @param {SVGRadialGradientElement} [radialGradient]\n  * @param {string} [solidColor]\n  */\n\n  /**\n  * @memberof module:jGraduate~\n  */\n  class Paint {\n    /**\n     * @param {module:jGraduate.jGraduatePaintOptions} [opt]\n    */\n    constructor (opt) {\n      const options = opt || {};\n      this.alpha = isNaN(options.alpha) ? 100 : options.alpha;\n      // copy paint object\n      if (options.copy) {\n        /**\n         * @name module:jGraduate~Paint#type\n         * @type {\"none\"|\"solidColor\"|\"linearGradient\"|\"radialGradient\"}\n         */\n        this.type = options.copy.type;\n        /**\n         * Represents opacity (0-100)\n         * @name module:jGraduate~Paint#alpha\n         * @type {Float}\n         */\n        this.alpha = options.copy.alpha;\n        /**\n         * Represents #RRGGBB hex of color\n         * @name module:jGraduate~Paint#solidColor\n         * @type {string}\n         */\n        this.solidColor = null;\n        /**\n         * @name module:jGraduate~Paint#linearGradient\n         * @type {SVGLinearGradientElement}\n         */\n        this.linearGradient = null;\n        /**\n         * @name module:jGraduate~Paint#radialGradient\n         * @type {SVGRadialGradientElement}\n         */\n        this.radialGradient = null;\n\n        switch (this.type) {\n        case 'none':\n          break;\n        case 'solidColor':\n          this.solidColor = options.copy.solidColor;\n          break;\n        case 'linearGradient':\n          this.linearGradient = options.copy.linearGradient.cloneNode(true);\n          break;\n        case 'radialGradient':\n          this.radialGradient = options.copy.radialGradient.cloneNode(true);\n          break;\n        }\n      // create linear gradient paint\n      } else if (options.linearGradient) {\n        this.type = 'linearGradient';\n        this.solidColor = null;\n        this.radialGradient = null;\n        this.linearGradient = options.linearGradient.cloneNode(true);\n      // create linear gradient paint\n      } else if (options.radialGradient) {\n        this.type = 'radialGradient';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = options.radialGradient.cloneNode(true);\n      // create solid color paint\n      } else if (options.solidColor) {\n        this.type = 'solidColor';\n        this.solidColor = options.solidColor;\n      // create empty paint\n      } else {\n        this.type = 'none';\n        this.solidColor = null;\n        this.linearGradient = null;\n        this.radialGradient = null;\n      }\n    }\n  }\n  /**\n  * @namespace {PlainObject} jGraduate\n  * @memberof external:jQuery\n  */\n  $.jGraduate = /** @lends external:jQuery.jGraduate */ {\n    /**\n    * @class external:jQuery.jGraduate.Paint\n    * @see module:jGraduate~Paint\n    */\n    Paint\n  };\n\n  // JSDoc doesn't show this as belonging to our `module:jGraduate.Options` type,\n  //   so we use `@see`\n  /**\n  * @namespace {module:jGraduate.Options} jGraduateDefaults\n  * @memberof external:jQuery.fn\n  */\n  $.fn.jGraduateDefaults = /** @lends external:jQuery.fn.jGraduateDefaults */ {\n    /**\n    * Creates an object with a 'none' color\n    * @type {external:jQuery.jGraduate.Paint}\n    * @see module:jGraduate.Options\n    */\n    paint: new $.jGraduate.Paint(),\n    /**\n    * @namespace\n    */\n    window: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      pickerTitle: 'Drag markers to pick a paint'\n    },\n    /**\n    * @namespace\n    */\n    images: {\n      /**\n      * @type {string}\n      * @see module:jGraduate.Options\n      */\n      clientPath: 'images/'\n    },\n    /**\n    * @type {string}\n    * @see module:jGraduate.Options\n    */\n    newstop: 'inverse' // same, inverse, black, white\n  };\n\n  const isGecko = navigator.userAgent.includes('Gecko/');\n\n  /**\n  * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs\n  */\n  /**\n  * @param {SVGElement} elem\n  * @param {module:jGraduate.Attrs} attrs\n  * @returns {undefined}\n  */\n  function setAttrs (elem, attrs) {\n    if (isGecko) {\n      Object.entries(attrs).forEach(([aname, val]) => {\n        elem.setAttribute(aname, val);\n      });\n    } else {\n      Object.entries(attrs).forEach(([aname, val]) => {\n        const prop = elem[aname];\n        if (prop && prop.constructor === 'SVGLength') {\n          prop.baseVal.value = val;\n        } else {\n          elem.setAttribute(aname, val);\n        }\n      });\n    }\n  }\n\n  /**\n  * @param {string} name\n  * @param {module:jGraduate.Attrs} attrs\n  * @param {Element} newparent\n  * @returns {SVGElement}\n  */\n  function mkElem (name, attrs, newparent) {\n    const elem = document.createElementNS(ns.svg, name);\n    setAttrs(elem, attrs);\n    if (newparent) {\n      newparent.append(elem);\n    }\n    return elem;\n  }\n\n  /**\n  * @typedef {PlainObject} module:jGraduate.ColorOpac Object may have one or both values\n  * @property {string} [color] #Hex color\n  * @property {Float} [opac] 0-1\n  */\n  /**\n  * @typedef {PlainObject} module:jGraduate.Options\n  * @property {module:jGraduate~Paint} [paint] A Paint object object describing the paint to display initially; defaults to a new instance without options (defaults to opaque white)\n  * @property {external:Window} [window]\n  * @property {string} [window.pickerTitle='Drag markers to pick a paint']\n  * @property {PlainObject} [images]\n  * @property {string} [images.clientPath='images/']\n  * @property {\"same\"|\"inverse\"|\"black\"|\"white\"|module:jGraduate.ColorOpac} [newstop=\"inverse\"]\n  */\n\n  /**\n  * @callback external:jQuery.fn.jGraduate.OkCallback\n  * @param {external:jQuery.jGraduate.Paint} paint\n  * @returns {undefined}\n  */\n  /**\n  * @callback external:jQuery.fn.jGraduate.CancelCallback\n  * @returns {undefined}\n  */\n\n  /**\n  * @function external:jQuery.fn.jGraduate\n  * @param {module:jGraduate.Options} [options]\n  * @param {external:jQuery.fn.jGraduate.OkCallback} [okCallback] Called with a Paint object when Ok is pressed\n  * @param {external:jQuery.fn.jGraduate.CancelCallback} [cancelCallback] Called with no arguments when Cancel is pressed\n  * @returns {external:jQuery}\n  */\n  $.fn.jGraduate = function (options, okCallback, cancelCallback) {\n    return this.each(function () {\n      const $this = $(this),\n        $settings = $.extend(true, {}, $.fn.jGraduateDefaults, options || {}),\n        id = $this.attr('id'),\n        idref = '#' + $this.attr('id') + ' ';\n\n      if (!idref) {\n        /* await */ $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');\n        return;\n      }\n\n      const okClicked = function () {\n        switch ($this.paint.type) {\n        case 'radialGradient':\n          $this.paint.linearGradient = null;\n          break;\n        case 'linearGradient':\n          $this.paint.radialGradient = null;\n          break;\n        case 'solidColor':\n          $this.paint.radialGradient = $this.paint.linearGradient = null;\n          break;\n        }\n        typeof $this.okCallback === 'function' && $this.okCallback($this.paint);\n        $this.hide();\n      };\n      const cancelClicked = function () {\n        typeof $this.cancelCallback === 'function' && $this.cancelCallback();\n        $this.hide();\n      };\n\n      $.extend(true, $this, { // public properties, methods, and callbacks\n        // make a copy of the incoming paint\n        paint: new $.jGraduate.Paint({copy: $settings.paint}),\n        okCallback: typeof okCallback === 'function' ? okCallback : null,\n        cancelCallback: typeof cancelCallback === 'function' ? cancelCallback : null\n      });\n\n      let // pos = $this.position(),\n        color = null;\n      const $win = $(window);\n\n      if ($this.paint.type === 'none') {\n        $this.paint = new $.jGraduate.Paint({solidColor: 'ffffff'});\n      }\n\n      $this.addClass('jGraduate_Picker');\n      $this.html(\n        '<ul class=\"jGraduate_tabs\">' +\n          '<li class=\"jGraduate_tab_color jGraduate_tab_current\" data-type=\"col\">Solid Color</li>' +\n          '<li class=\"jGraduate_tab_lingrad\" data-type=\"lg\">Linear Gradient</li>' +\n          '<li class=\"jGraduate_tab_radgrad\" data-type=\"rg\">Radial Gradient</li>' +\n        '</ul>' +\n        '<div class=\"jGraduate_colPick\"></div>' +\n        '<div class=\"jGraduate_gradPick\"></div>' +\n        '<div class=\"jGraduate_LightBox\"></div>' +\n        '<div id=\"' + id + '_jGraduate_stopPicker\" class=\"jGraduate_stopPicker\"></div>'\n      );\n      const colPicker = $(idref + '> .jGraduate_colPick');\n      const gradPicker = $(idref + '> .jGraduate_gradPick');\n\n      gradPicker.html(\n        '<div id=\"' + id + '_jGraduate_Swatch\" class=\"jGraduate_Swatch\">' +\n          '<h2 class=\"jGraduate_Title\">' + $settings.window.pickerTitle + '</h2>' +\n          '<div id=\"' + id + '_jGraduate_GradContainer\" class=\"jGraduate_GradContainer\"></div>' +\n          '<div id=\"' + id + '_jGraduate_StopSlider\" class=\"jGraduate_StopSlider\"></div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_lg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Begin Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x1\" size=\"3\" title=\"Enter starting x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y1\" size=\"3\" title=\"Enter starting y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">End Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_x2\" size=\"3\" title=\"Enter ending x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_y2\" size=\"3\" title=\"Enter ending y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form jGraduate_Points jGraduate_rg_field\">' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Center Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_cy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n          '<div class=\"jGraduate_StopSection\">' +\n            '<label class=\"jGraduate_Form_Heading\">Focal Point</label>' +\n            '<div class=\"jGraduate_Form_Section\">' +\n              '<label>Match center: <input type=\"checkbox\" checked=\"checked\" id=\"' + id + '_jGraduate_match_ctr\"/></label><br/>' +\n              '<label>x:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fx\" size=\"3\" title=\"Enter x value between 0.0 and 1.0\"/>' +\n              '<label>y:</label>' +\n              '<input type=\"text\" id=\"' + id + '_jGraduate_fy\" size=\"3\" title=\"Enter y value between 0.0 and 1.0\"/>' +\n            '</div>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_StopSection jGraduate_SpreadMethod\">' +\n          '<label class=\"jGraduate_Form_Heading\">Spread method</label>' +\n          '<div class=\"jGraduate_Form_Section\">' +\n            '<select class=\"jGraduate_spreadMethod\">' +\n              '<option value=pad selected>Pad</option>' +\n              '<option value=reflect>Reflect</option>' +\n              '<option value=repeat>Repeat</option>' +\n            '</select>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_Form\">' +\n          '<div class=\"jGraduate_Slider jGraduate_RadiusField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Radius:</label>' +\n            '<div id=\"' + id + '_jGraduate_Radius\" class=\"jGraduate_SliderBar jGraduate_Radius\" title=\"Click to set radius\">' +\n              '<img id=\"' + id + '_jGraduate_RadiusArrows\" class=\"jGraduate_RadiusArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_RadiusInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_EllipField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Ellip:</label>' +\n            '<div id=\"' + id + '_jGraduate_Ellip\" class=\"jGraduate_SliderBar jGraduate_Ellip\" title=\"Click to set Ellip\">' +\n              '<img id=\"' + id + '_jGraduate_EllipArrows\" class=\"jGraduate_EllipArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_EllipInput\" size=\"3\" value=\"0\"/>%</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_AngleField jGraduate_rg_field\">' +\n            '<label class=\"prelabel\">Angle:</label>' +\n            '<div id=\"' + id + '_jGraduate_Angle\" class=\"jGraduate_SliderBar jGraduate_Angle\" title=\"Click to set Angle\">' +\n              '<img id=\"' + id + '_jGraduate_AngleArrows\" class=\"jGraduate_AngleArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_AngleInput\" size=\"3\" value=\"0\"/>deg</label>' +\n          '</div>' +\n          '<div class=\"jGraduate_Slider jGraduate_OpacField\">' +\n            '<label class=\"prelabel\">Opac:</label>' +\n            '<div id=\"' + id + '_jGraduate_Opac\" class=\"jGraduate_SliderBar jGraduate_Opac\" title=\"Click to set Opac\">' +\n              '<img id=\"' + id + '_jGraduate_OpacArrows\" class=\"jGraduate_OpacArrows\" src=\"' + $settings.images.clientPath + 'rangearrows2.gif\">' +\n            '</div>' +\n            '<label><input type=\"text\" id=\"' + id + '_jGraduate_OpacInput\" size=\"3\" value=\"100\"/>%</label>' +\n          '</div>' +\n        '</div>' +\n        '<div class=\"jGraduate_OkCancel\">' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Ok\" class=\"jGraduate_Ok\" value=\"OK\"/>' +\n          '<input type=\"button\" id=\"' + id + '_jGraduate_Cancel\" class=\"jGraduate_Cancel\" value=\"Cancel\"/>' +\n        '</div>'\n      );\n\n      // --------------\n      // Set up all the SVG elements (the gradient, stops and rectangle)\n      const MAX = 256,\n        MARGINX = 0,\n        MARGINY = 0,\n        // STOP_RADIUS = 15 / 2,\n        SIZEX = MAX - 2 * MARGINX,\n        SIZEY = MAX - 2 * MARGINY;\n\n      const attrInput = {};\n\n      const SLIDERW = 145;\n      $('.jGraduate_SliderBar').width(SLIDERW);\n\n      const container = $('#' + id + '_jGraduate_GradContainer')[0];\n\n      const svg = mkElem('svg', {\n        id: id + '_jgraduate_svg',\n        width: MAX,\n        height: MAX,\n        xmlns: ns.svg\n      }, container);\n\n      // This wasn't working as designed\n      // let curType;\n      // curType = curType || $this.paint.type;\n\n      // if we are sent a gradient, import it\n      let curType = $this.paint.type;\n\n      let grad = $this.paint[curType];\n      let curGradient = grad;\n\n      const gradalpha = $this.paint.alpha;\n\n      const isSolid = curType === 'solidColor';\n\n      // Make any missing gradients\n      switch (curType) {\n      case 'solidColor':\n        // fall through\n      case 'linearGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_lg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('radialGradient', {\n          id: id + '_rg_jgraduate_grad'\n        }, svg);\n        if (curType === 'linearGradient') { break; }\n        // fall through\n      case 'radialGradient':\n        if (!isSolid) {\n          curGradient.id = id + '_rg_jgraduate_grad';\n          grad = curGradient = svg.appendChild(curGradient); // .cloneNode(true));\n        }\n        mkElem('linearGradient', {\n          id: id + '_lg_jgraduate_grad'\n        }, svg);\n      }\n\n      let stopGroup; // eslint-disable-line prefer-const\n      if (isSolid) {\n        grad = curGradient = $('#' + id + '_lg_jgraduate_grad')[0];\n        color = $this.paint[curType];\n        mkStop(0, '#' + color, 1);\n\n        const type = typeof $settings.newstop;\n\n        if (type === 'string') {\n          switch ($settings.newstop) {\n          case 'same':\n            mkStop(1, '#' + color, 1);\n            break;\n\n          case 'inverse': {\n            // Invert current color for second stop\n            let inverted = '';\n            for (let i = 0; i < 6; i += 2) {\n              // const ch = color.substr(i, 2);\n              let inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);\n              if (inv.length < 2) inv = 0 + inv;\n              inverted += inv;\n            }\n            mkStop(1, '#' + inverted, 1);\n            break;\n          } case 'white':\n            mkStop(1, '#ffffff', 1);\n            break;\n\n          case 'black':\n            mkStop(1, '#000000', 1);\n            break;\n          }\n        } else if (type === 'object') {\n          const opac = ('opac' in $settings.newstop) ? $settings.newstop.opac : 1;\n          mkStop(1, ($settings.newstop.color || '#' + color), opac);\n        }\n      }\n\n      const x1 = parseFloat(grad.getAttribute('x1') || 0.0),\n        y1 = parseFloat(grad.getAttribute('y1') || 0.0),\n        x2 = parseFloat(grad.getAttribute('x2') || 1.0),\n        y2 = parseFloat(grad.getAttribute('y2') || 0.0);\n\n      const cx = parseFloat(grad.getAttribute('cx') || 0.5),\n        cy = parseFloat(grad.getAttribute('cy') || 0.5),\n        fx = parseFloat(grad.getAttribute('fx') || cx),\n        fy = parseFloat(grad.getAttribute('fy') || cy);\n\n      const previewRect = mkElem('rect', {\n        id: id + '_jgraduate_rect',\n        x: MARGINX,\n        y: MARGINY,\n        width: SIZEX,\n        height: SIZEY,\n        fill: 'url(#' + id + '_jgraduate_grad)',\n        'fill-opacity': gradalpha / 100\n      }, svg);\n\n      // stop visuals created here\n      const beginCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_lg_field',\n        title: 'Begin Stop'\n      }).text(1).css({\n        top: y1 * MAX,\n        left: x1 * MAX\n      }).data('coord', 'start').appendTo(container);\n\n      const endCoord = beginCoord.clone().text(2).css({\n        top: y2 * MAX,\n        left: x2 * MAX\n      }).attr('title', 'End stop').data('coord', 'end').appendTo(container);\n\n      const centerCoord = $('<div/>').attr({\n        class: 'grad_coord jGraduate_rg_field',\n        title: 'Center stop'\n      }).text('C').css({\n        top: cy * MAX,\n        left: cx * MAX\n      }).data('coord', 'center').appendTo(container);\n\n      const focusCoord = centerCoord.clone().text('F').css({\n        top: fy * MAX,\n        left: fx * MAX,\n        display: 'none'\n      }).attr('title', 'Focus point').data('coord', 'focus').appendTo(container);\n\n      focusCoord[0].id = id + '_jGraduate_focusCoord';\n\n      // const coords = $(idref + ' .grad_coord');\n\n      // $(container).hover(function () {\n      //   coords.animate({\n      //     opacity: 1\n      //   }, 500);\n      // }, function () {\n      //   coords.animate({\n      //     opacity: .2\n      //   }, 500);\n      // });\n\n      let showFocus;\n      $.each(['x1', 'y1', 'x2', 'y2', 'cx', 'cy', 'fx', 'fy'], function (i, attr) {\n        const isRadial = isNaN(attr[1]);\n\n        let attrval = curGradient.getAttribute(attr);\n        if (!attrval) {\n          // Set defaults\n          if (isRadial) {\n            // For radial points\n            attrval = '0.5';\n          } else {\n            // Only x2 is 1\n            attrval = attr === 'x2' ? '1.0' : '0.0';\n          }\n        }\n\n        attrInput[attr] = $('#' + id + '_jGraduate_' + attr)\n          .val(attrval)\n          .change(function () {\n            // TODO: Support values < 0 and > 1 (zoomable preview?)\n            if (isNaN(parseFloat(this.value)) || this.value < 0) {\n              this.value = 0.0;\n            } else if (this.value > 1) {\n              this.value = 1.0;\n            }\n\n            if (!(attr[0] === 'f' && !showFocus)) {\n              if ((isRadial && curType === 'radialGradient') || (!isRadial && curType === 'linearGradient')) {\n                curGradient.setAttribute(attr, this.value);\n              }\n            }\n\n            const $elem = isRadial\n              ? attr[0] === 'c' ? centerCoord : focusCoord\n              : attr[1] === '1' ? beginCoord : endCoord;\n\n            const cssName = attr.includes('x') ? 'left' : 'top';\n\n            $elem.css(cssName, this.value * MAX);\n          }).change();\n      });\n\n      /**\n       *\n       * @param {Float} n\n       * @param {Float|string} colr\n       * @param {Float} opac\n       * @param {boolean} [sel]\n       * @param {SVGStopElement} [stopElem]\n       * @returns {SVGStopElement}\n       */\n      function mkStop (n, colr, opac, sel, stopElem) {\n        const stop = stopElem || mkElem('stop', {\n          'stop-color': colr,\n          'stop-opacity': opac,\n          offset: n\n        }, curGradient);\n        if (stopElem) {\n          colr = stopElem.getAttribute('stop-color');\n          opac = stopElem.getAttribute('stop-opacity');\n          n = stopElem.getAttribute('offset');\n        } else {\n          curGradient.append(stop);\n        }\n        if (opac === null) opac = 1;\n\n        const pickerD = 'M-6.2,0.9c3.6-4,6.7-4.3,6.7-12.4c-0.2,7.9,3.1,8.8,6.5,12.4c3.5,3.8,2.9,9.6,0,12.3c-3.1,2.8-10.4,2.7-13.2,0C-9.6,9.9-9.4,4.4-6.2,0.9z';\n\n        const pathbg = mkElem('path', {\n          d: pickerD,\n          fill: 'url(#jGraduate_trans)',\n          transform: 'translate(' + (10 + n * MAX) + ', 26)'\n        }, stopGroup);\n\n        const path = mkElem('path', {\n          d: pickerD,\n          fill: colr,\n          'fill-opacity': opac,\n          transform: 'translate(' + (10 + n * MAX) + ', 26)',\n          stroke: '#000',\n          'stroke-width': 1.5\n        }, stopGroup);\n\n        $(path).mousedown(function (e) {\n          selectStop(this);\n          drag = curStop;\n          $win.mousemove(dragColor).mouseup(remDrags);\n          stopOffset = stopMakerDiv.offset();\n          e.preventDefault();\n          return false;\n        }).data('stop', stop).data('bg', pathbg).dblclick(function () {\n          $('div.jGraduate_LightBox').show();\n          const colorhandle = this; // eslint-disable-line consistent-this\n          let stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;\n          let stopColor = stop.getAttribute('stop-color') || 1;\n          let thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);\n          while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n          colr = stopColor.substr(1) + thisAlpha;\n          $('#' + id + '_jGraduate_stopPicker').css({left: 100, bottom: 15}).jPicker({\n            window: {title: 'Pick the start color and opacity for the gradient'},\n            images: {clientPath: $settings.images.clientPath},\n            color: {active: colr, alphaSupport: true}\n          }, function (clr, arg2) {\n            stopColor = clr.val('hex') ? ('#' + clr.val('hex')) : 'none';\n            stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;\n            colorhandle.setAttribute('fill', stopColor);\n            colorhandle.setAttribute('fill-opacity', stopOpacity);\n            stop.setAttribute('stop-color', stopColor);\n            stop.setAttribute('stop-opacity', stopOpacity);\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          }, null, function () {\n            $('div.jGraduate_LightBox').hide();\n            $('#' + id + '_jGraduate_stopPicker').hide();\n          });\n        });\n\n        $(curGradient).find('stop').each(function () {\n          const curS = $(this);\n          if (Number(this.getAttribute('offset')) > n) {\n            if (!colr) {\n              const newcolor = this.getAttribute('stop-color');\n              const newopac = this.getAttribute('stop-opacity');\n              stop.setAttribute('stop-color', newcolor);\n              path.setAttribute('fill', newcolor);\n              stop.setAttribute('stop-opacity', newopac === null ? 1 : newopac);\n              path.setAttribute('fill-opacity', newopac === null ? 1 : newopac);\n            }\n            curS.before(stop);\n            return false;\n          }\n          return true;\n        });\n        if (sel) selectStop(path);\n        return stop;\n      }\n\n      /**\n      *\n      * @returns {undefined}\n      */\n      function remStop () {\n        delStop.setAttribute('display', 'none');\n        const path = $(curStop);\n        const stop = path.data('stop');\n        const bg = path.data('bg');\n        $([curStop, stop, bg]).remove();\n      }\n\n      const stopMakerDiv = $('#' + id + '_jGraduate_StopSlider');\n\n      let stops, curStop, drag;\n\n      const delStop = mkElem('path', {\n        d: 'm9.75,-6l-19.5,19.5m0,-19.5l19.5,19.5',\n        fill: 'none',\n        stroke: '#D00',\n        'stroke-width': 5,\n        display: 'none'\n      }, undefined); // stopMakerSVG);\n\n      /**\n      * @param {Element} item\n      * @returns {undefined}\n      */\n      function selectStop (item) {\n        if (curStop) curStop.setAttribute('stroke', '#000');\n        item.setAttribute('stroke', 'blue');\n        curStop = item;\n        curStop.parentNode.append(curStop);\n        //   stops = $('stop');\n        //   opac_select.val(curStop.attr('fill-opacity') || 1);\n        //   root.append(delStop);\n      }\n\n      let stopOffset;\n\n      /**\n      *\n      * @returns {undefined}\n      */\n      function remDrags () {\n        $win.unbind('mousemove', dragColor);\n        if (delStop.getAttribute('display') !== 'none') {\n          remStop();\n        }\n        drag = null;\n      }\n\n      let scaleX = 1, scaleY = 1, angle = 0;\n\n      let cX = cx;\n      let cY = cy;\n      /**\n      *\n      * @returns {undefined}\n      */\n      function xform () {\n        const rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';\n        if (scaleX === 1 && scaleY === 1) {\n          curGradient.removeAttribute('gradientTransform');\n          // $('#ang').addClass('dis');\n        } else {\n          const x = -cX * (scaleX - 1);\n          const y = -cY * (scaleY - 1);\n          curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')');\n          // $('#ang').removeClass('dis');\n        }\n      }\n\n      /**\n      * @param {Event} evt\n      * @returns {undefined}\n      */\n      function dragColor (evt) {\n        let x = evt.pageX - stopOffset.left;\n        const y = evt.pageY - stopOffset.top;\n        x = x < 10\n          ? 10\n          : x > MAX + 10\n            ? MAX + 10\n            : x;\n\n        const xfStr = 'translate(' + x + ', 26)';\n        if (y < -60 || y > 130) {\n          delStop.setAttribute('display', 'block');\n          delStop.setAttribute('transform', xfStr);\n        } else {\n          delStop.setAttribute('display', 'none');\n        }\n\n        drag.setAttribute('transform', xfStr);\n        $.data(drag, 'bg').setAttribute('transform', xfStr);\n        const stop = $.data(drag, 'stop');\n        const sX = (x - 10) / MAX;\n\n        stop.setAttribute('offset', sX);\n\n        let last = 0;\n        $(curGradient).find('stop').each(function (i) {\n          const cur = this.getAttribute('offset');\n          const t = $(this);\n          if (cur < last) {\n            t.prev().before(t);\n            stops = $(curGradient).find('stop');\n          }\n          last = cur;\n        });\n      }\n\n      const stopMakerSVG = mkElem('svg', {\n        width: '100%',\n        height: 45\n      }, stopMakerDiv[0]);\n\n      const transPattern = mkElem('pattern', {\n        width: 16,\n        height: 16,\n        patternUnits: 'userSpaceOnUse',\n        id: 'jGraduate_trans'\n      }, stopMakerSVG);\n\n      const transImg = mkElem('image', {\n        width: 16,\n        height: 16\n      }, transPattern);\n\n      const bgImage = $settings.images.clientPath + 'map-opacity.png';\n\n      transImg.setAttributeNS(ns.xlink, 'xlink:href', bgImage);\n\n      $(stopMakerSVG).click(function (evt) {\n        stopOffset = stopMakerDiv.offset();\n        const {target} = evt;\n        if (target.tagName === 'path') return;\n        let x = evt.pageX - stopOffset.left - 8;\n        x = x < 10 ? 10 : x > MAX + 10 ? MAX + 10 : x;\n        mkStop(x / MAX, 0, 0, true);\n        evt.stopPropagation();\n      });\n\n      $(stopMakerSVG).mouseover(function () {\n        stopMakerSVG.append(delStop);\n      });\n\n      stopGroup = mkElem('g', {}, stopMakerSVG);\n\n      mkElem('line', {\n        x1: 10,\n        y1: 15,\n        x2: MAX + 10,\n        y2: 15,\n        'stroke-width': 2,\n        stroke: '#000'\n      }, stopMakerSVG);\n\n      const spreadMethodOpt = gradPicker.find('.jGraduate_spreadMethod').change(function () {\n        curGradient.setAttribute('spreadMethod', $(this).val());\n      });\n\n      // handle dragging the stop around the swatch\n      let draggingCoord = null;\n\n      const onCoordDrag = function (evt) {\n        let x = evt.pageX - offset.left;\n        let y = evt.pageY - offset.top;\n\n        // clamp stop to the swatch\n        x = x < 0 ? 0 : x > MAX ? MAX : x;\n        y = y < 0 ? 0 : y > MAX ? MAX : y;\n\n        draggingCoord.css('left', x).css('top', y);\n\n        // calculate stop offset\n        const fracx = x / SIZEX;\n        const fracy = y / SIZEY;\n\n        const type = draggingCoord.data('coord');\n        const grd = curGradient;\n\n        switch (type) {\n        case 'start':\n          attrInput.x1.val(fracx);\n          attrInput.y1.val(fracy);\n          grd.setAttribute('x1', fracx);\n          grd.setAttribute('y1', fracy);\n          break;\n        case 'end':\n          attrInput.x2.val(fracx);\n          attrInput.y2.val(fracy);\n          grd.setAttribute('x2', fracx);\n          grd.setAttribute('y2', fracy);\n          break;\n        case 'center':\n          attrInput.cx.val(fracx);\n          attrInput.cy.val(fracy);\n          grd.setAttribute('cx', fracx);\n          grd.setAttribute('cy', fracy);\n          cX = fracx;\n          cY = fracy;\n          xform();\n          break;\n        case 'focus':\n          attrInput.fx.val(fracx);\n          attrInput.fy.val(fracy);\n          grd.setAttribute('fx', fracx);\n          grd.setAttribute('fy', fracy);\n          xform();\n        }\n\n        evt.preventDefault();\n      };\n\n      const onCoordUp = function () {\n        draggingCoord = null;\n        $win.unbind('mousemove', onCoordDrag).unbind('mouseup', onCoordUp);\n      };\n\n      // Linear gradient\n      // (function () {\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n\n      let numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      for (let i = 0; i < numstops; i++) {\n        mkStop(0, 0, 0, 0, stops[i]);\n      }\n\n      spreadMethodOpt.val(curGradient.getAttribute('spreadMethod') || 'pad');\n\n      let offset;\n\n      // No match, so show focus point\n      showFocus = false;\n\n      previewRect.setAttribute('fill-opacity', gradalpha / 100);\n\n      $('#' + id + ' div.grad_coord').mousedown(function (evt) {\n        evt.preventDefault();\n        draggingCoord = $(this);\n        // const sPos = draggingCoord.offset();\n        offset = draggingCoord.parent().offset();\n        $win.mousemove(onCoordDrag).mouseup(onCoordUp);\n      });\n\n      // bind GUI elements\n      $('#' + id + '_jGraduate_Ok').bind('click', function () {\n        $this.paint.type = curType;\n        $this.paint[curType] = curGradient.cloneNode(true);\n        $this.paint.solidColor = null;\n        okClicked();\n      });\n      $('#' + id + '_jGraduate_Cancel').bind('click', function (paint) {\n        cancelClicked();\n      });\n\n      if (curType === 'radialGradient') {\n        if (showFocus) {\n          focusCoord.show();\n        } else {\n          focusCoord.hide();\n          attrInput.fx.val('');\n          attrInput.fy.val('');\n        }\n      }\n\n      $('#' + id + '_jGraduate_match_ctr')[0].checked = !showFocus;\n\n      let lastfx, lastfy;\n\n      $('#' + id + '_jGraduate_match_ctr').change(function () {\n        showFocus = !this.checked;\n        focusCoord.toggle(showFocus);\n        attrInput.fx.val('');\n        attrInput.fy.val('');\n        const grd = curGradient;\n        if (!showFocus) {\n          lastfx = grd.getAttribute('fx');\n          lastfy = grd.getAttribute('fy');\n          grd.removeAttribute('fx');\n          grd.removeAttribute('fy');\n        } else {\n          const fX = lastfx || 0.5;\n          const fY = lastfy || 0.5;\n          grd.setAttribute('fx', fX);\n          grd.setAttribute('fy', fY);\n          attrInput.fx.val(fX);\n          attrInput.fy.val(fY);\n        }\n      });\n\n      stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      numstops = stops.length;\n      // if there are not at least two stops, then\n      if (numstops < 2) {\n        while (numstops < 2) {\n          curGradient.append(document.createElementNS(ns.svg, 'stop'));\n          ++numstops;\n        }\n        stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');\n      }\n\n      let slider;\n\n      const setSlider = function (e) {\n        const {offset: {left}} = slider;\n        const div = slider.parent;\n        let x = (e.pageX - left - parseInt(div.css('border-left-width')));\n        if (x > SLIDERW) x = SLIDERW;\n        if (x <= 0) x = 0;\n        const posx = x - 5;\n        x /= SLIDERW;\n\n        switch (slider.type) {\n        case 'radius':\n          x = Math.pow(x * 2, 2.5);\n          if (x > 0.98 && x < 1.02) x = 1;\n          if (x <= 0.01) x = 0.01;\n          curGradient.setAttribute('r', x);\n          break;\n        case 'opacity':\n          $this.paint.alpha = parseInt(x * 100);\n          previewRect.setAttribute('fill-opacity', x);\n          break;\n        case 'ellip':\n          scaleX = 1;\n          scaleY = 1;\n          if (x < 0.5) {\n            x /= 0.5; // 0.001\n            scaleX = x <= 0 ? 0.01 : x;\n          } else if (x > 0.5) {\n            x /= 0.5; // 2\n            x = 2 - x;\n            scaleY = x <= 0 ? 0.01 : x;\n          }\n          xform();\n          x -= 1;\n          if (scaleY === x + 1) {\n            x = Math.abs(x);\n          }\n          break;\n        case 'angle':\n          x -= 0.5;\n          angle = x *= 180;\n          xform();\n          x /= 100;\n          break;\n        }\n        slider.elem.css({'margin-left': posx});\n        x = Math.round(x * 100);\n        slider.input.val(x);\n      };\n\n      let ellipVal = 0, angleVal = 0;\n\n      if (curType === 'radialGradient') {\n        const tlist = curGradient.gradientTransform.baseVal;\n        if (tlist.numberOfItems === 2) {\n          const t = tlist.getItem(0);\n          const s = tlist.getItem(1);\n          if (t.type === 2 && s.type === 3) {\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        } else if (tlist.numberOfItems === 3) {\n          // Assume [R][T][S]\n          const r = tlist.getItem(0);\n          const t = tlist.getItem(1);\n          const s = tlist.getItem(2);\n\n          if (r.type === 4 &&\n            t.type === 2 &&\n            s.type === 3\n          ) {\n            angleVal = Math.round(r.angle);\n            const m = s.matrix;\n            if (m.a !== 1) {\n              ellipVal = Math.round(-(1 - m.a) * 100);\n            } else if (m.d !== 1) {\n              ellipVal = Math.round((1 - m.d) * 100);\n            }\n          }\n        }\n      }\n\n      const sliders = {\n        radius: {\n          handle: '#' + id + '_jGraduate_RadiusArrows',\n          input: '#' + id + '_jGraduate_RadiusInput',\n          val: (curGradient.getAttribute('r') || 0.5) * 100\n        },\n        opacity: {\n          handle: '#' + id + '_jGraduate_OpacArrows',\n          input: '#' + id + '_jGraduate_OpacInput',\n          val: $this.paint.alpha || 100\n        },\n        ellip: {\n          handle: '#' + id + '_jGraduate_EllipArrows',\n          input: '#' + id + '_jGraduate_EllipInput',\n          val: ellipVal\n        },\n        angle: {\n          handle: '#' + id + '_jGraduate_AngleArrows',\n          input: '#' + id + '_jGraduate_AngleInput',\n          val: angleVal\n        }\n      };\n\n      $.each(sliders, function (type, data) {\n        const handle = $(data.handle);\n        handle.mousedown(function (evt) {\n          const parent = handle.parent();\n          slider = {\n            type,\n            elem: handle,\n            input: $(data.input),\n            parent,\n            offset: parent.offset()\n          };\n          $win.mousemove(dragSlider).mouseup(stopSlider);\n          evt.preventDefault();\n        });\n\n        $(data.input).val(data.val).change(function () {\n          const isRad = curType === 'radialGradient';\n          let val = Number(this.value);\n          let xpos = 0;\n          switch (type) {\n          case 'radius':\n            if (isRad) curGradient.setAttribute('r', val / 100);\n            xpos = (Math.pow(val / 100, 1 / 2.5) / 2) * SLIDERW;\n            break;\n\n          case 'opacity':\n            $this.paint.alpha = val;\n            previewRect.setAttribute('fill-opacity', val / 100);\n            xpos = val * (SLIDERW / 100);\n            break;\n\n          case 'ellip':\n            scaleX = scaleY = 1;\n            if (val === 0) {\n              xpos = SLIDERW * 0.5;\n              break;\n            }\n            if (val > 99.5) val = 99.5;\n            if (val > 0) {\n              scaleY = 1 - (val / 100);\n            } else {\n              scaleX = -(val / 100) - 1;\n            }\n\n            xpos = SLIDERW * ((val + 100) / 2) / 100;\n            if (isRad) xform();\n            break;\n\n          case 'angle':\n            angle = val;\n            xpos = angle / 180;\n            xpos += 0.5;\n            xpos *= SLIDERW;\n            if (isRad) xform();\n          }\n          if (xpos > SLIDERW) {\n            xpos = SLIDERW;\n          } else if (xpos < 0) {\n            xpos = 0;\n          }\n          handle.css({'margin-left': xpos - 5});\n        }).change();\n      });\n\n      const dragSlider = function (evt) {\n        setSlider(evt);\n        evt.preventDefault();\n      };\n\n      const stopSlider = function (evt) {\n        $win.unbind('mousemove', dragSlider).unbind('mouseup', stopSlider);\n        slider = null;\n      };\n\n      // --------------\n      let thisAlpha = ($this.paint.alpha * 255 / 100).toString(16);\n      while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }\n      thisAlpha = thisAlpha.split('.')[0];\n      color = $this.paint.solidColor === 'none' ? '' : $this.paint.solidColor + thisAlpha;\n\n      if (!isSolid) {\n        color = stops[0].getAttribute('stop-color');\n      }\n\n      // This should be done somewhere else, probably\n      $.extend($.fn.jPicker.defaults.window, {\n        alphaSupport: true, effects: {type: 'show', speed: 0}\n      });\n\n      colPicker.jPicker(\n        {\n          window: {title: $settings.window.pickerTitle},\n          images: {clientPath: $settings.images.clientPath},\n          color: {active: color, alphaSupport: true}\n        },\n        function (clr) {\n          $this.paint.type = 'solidColor';\n          $this.paint.alpha = clr.val('ahex') ? Math.round((clr.val('a') / 255) * 100) : 100;\n          $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';\n          $this.paint.radialGradient = null;\n          okClicked();\n        },\n        null,\n        function () { cancelClicked(); }\n      );\n\n      const tabs = $(idref + ' .jGraduate_tabs li');\n      tabs.click(function () {\n        tabs.removeClass('jGraduate_tab_current');\n        $(this).addClass('jGraduate_tab_current');\n        $(idref + ' > div').hide();\n        const type = $(this).attr('data-type');\n        /* const container = */ $(idref + ' .jGraduate_gradPick').show();\n        if (type === 'rg' || type === 'lg') {\n          // Show/hide appropriate fields\n          $('.jGraduate_' + type + '_field').show();\n          $('.jGraduate_' + (type === 'lg' ? 'rg' : 'lg') + '_field').hide();\n\n          $('#' + id + '_jgraduate_rect')[0].setAttribute('fill', 'url(#' + id + '_' + type + '_jgraduate_grad)');\n\n          // Copy stops\n\n          curType = type === 'lg' ? 'linearGradient' : 'radialGradient';\n\n          $('#' + id + '_jGraduate_OpacInput').val($this.paint.alpha).change();\n\n          const newGrad = $('#' + id + '_' + type + '_jgraduate_grad')[0];\n\n          if (curGradient !== newGrad) {\n            const curStops = $(curGradient).find('stop');\n            $(newGrad).empty().append(curStops);\n            curGradient = newGrad;\n            const sm = spreadMethodOpt.val();\n            curGradient.setAttribute('spreadMethod', sm);\n          }\n          showFocus = type === 'rg' && curGradient.getAttribute('fx') !== null && !(cx === fx && cy === fy);\n          $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);\n          if (showFocus) {\n            $('#' + id + '_jGraduate_match_ctr')[0].checked = false;\n          }\n        } else {\n          $(idref + ' .jGraduate_gradPick').hide();\n          $(idref + ' .jGraduate_colPick').show();\n        }\n      });\n      $(idref + ' > div').hide();\n      tabs.removeClass('jGraduate_tab_current');\n      let tab;\n      switch ($this.paint.type) {\n      case 'linearGradient':\n        tab = $(idref + ' .jGraduate_tab_lingrad');\n        break;\n      case 'radialGradient':\n        tab = $(idref + ' .jGraduate_tab_radgrad');\n        break;\n      default:\n        tab = $(idref + ' .jGraduate_tab_color');\n        break;\n      }\n      $this.show();\n\n      // jPicker will try to show after a 0ms timeout, so need to fire this after that\n      setTimeout(() => {\n        tab.addClass('jGraduate_tab_current').click();\n      }, 10);\n    });\n  };\n  return $;\n}\n","/**\n * jPicker (Adapted from version 1.1.6)\n *\n * jQuery Plugin for Photoshop style color picker\n *\n * @module jPicker\n * @copyright (c) 2010 Christopher T. Tillman\n * Digital Magic Productions, Inc. ({@link http://www.digitalmagicpro.com/})\n * FREE to use, alter, copy, sell, and especially ENHANCE\n * @license MIT\n *\n * Painstakingly ported from John Dyers' excellent work on his own color picker based on the Prototype framework.\n *\n * John Dyers' website: {@link http://johndyer.name}\n * Color Picker page: {@link http://johndyer.name/photoshop-like-javascript-color-picker/}\n */\n\n/**\n* @external Math\n*/\n/**\n* @memberof external:Math\n* @param {Float} value\n* @param {Float} precision\n* @returns {Float}\n*/\nfunction toFixedNumeric (value, precision) {\n  if (precision === undefined) precision = 0;\n  return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);\n}\n\n/**\n * Whether a value is `null` or `undefined`.\n * @param {Any} val\n * @returns {boolean}\n */\nconst isNullish = (val) => {\n  return val === null || val === undefined;\n};\n\n/**\n* @function module:jPicker.jPicker\n* @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})\n* @returns {external:jQuery}\n*/\nconst jPicker = function ($) {\n  if (!$.loadingStylesheets) {\n    /**\n    * @name loadingStylesheets\n    * @type {string[]}\n    * @memberof external:jQuery\n    */\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'jgraduate/css/jPicker.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @typedef {PlainObject} module:jPicker.SliderOptions\n  * @property {external:jQuery|PlainObject} arrow\n  * @property {string} arrow.image Not in use?\n  * @property {Float} arrow.width\n  * @property {Float} arrow.height\n  * @property {PlainObject} map\n  * @property {Float} map.width\n  * @property {Float} map.height\n  */\n\n  /**\n  * Encapsulate slider functionality for the ColorMap and ColorBar -\n  * could be useful to use a jQuery UI draggable for this with certain extensions.\n  * @memberof module:jPicker\n  * @param {external:jQuery} bar\n  * @param {module:jPicker.SliderOptions} options\n  * @returns {undefined}\n  */\n  class Slider {\n    constructor (bar, options) {\n      const that = this;\n      /**\n       * Fire events on the supplied `context`\n       * @param {module:jPicker.JPickerInit} context\n       * @returns {undefined}\n       */\n      function fireChangeEvents (context) {\n        changeEvents.forEach((changeEvent) => {\n          changeEvent.call(that, that, context);\n        });\n      }\n\n      /**\n       * Bind the mousedown to the bar not the arrow for quick snapping to the clicked location.\n       * @param {external:jQuery.Event} e\n       * @returns {undefined}\n       */\n      function mouseDown (e) {\n        const off = bar.offset();\n        offset = {l: off.left | 0, t: off.top | 0}; // eslint-disable-line no-bitwise\n        clearTimeout(timeout);\n        // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call(that, e);\n        }, 0);\n        // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing\n        $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);\n        e.preventDefault(); // don't try to select anything or drag the image to the desktop\n      }\n      /**\n       * Set the values as the mouse moves.\n       * @param {external:jQuery.Event} e\n       * @returns {false}\n       */\n      function mouseMove (e) {\n        clearTimeout(timeout);\n        timeout = setTimeout(function () {\n          setValuesFromMousePosition.call(that, e);\n        }, 0);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      /**\n       * Unbind the document events - they aren't needed when not dragging.\n       * @param {external:jQuery.Event} e\n       * @returns {false}\n       */\n      function mouseUp (e) {\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n\n      /**\n       * Calculate mouse position and set value within the current range.\n       * @param {Event} e\n       * @returns {undefined}\n       */\n      function setValuesFromMousePosition (e) {\n        const barW = bar.w, // local copies for YUI compressor\n          barH = bar.h;\n        let locX = e.pageX - offset.l,\n          locY = e.pageY - offset.t;\n        // keep the arrow within the bounds of the bar\n        if (locX < 0) locX = 0;\n        else if (locX > barW) locX = barW;\n        if (locY < 0) locY = 0;\n        else if (locY > barH) locY = barH;\n        val.call(that, 'xy', {\n          x: ((locX / barW) * rangeX) + minX,\n          y: ((locY / barH) * rangeY) + minY\n        });\n      }\n      /**\n       *\n       * @returns {undefined}\n       */\n      function draw () {\n        const\n          barW = bar.w,\n          barH = bar.h,\n          arrowW = arrow.w,\n          arrowH = arrow.h;\n        let arrowOffsetX = 0,\n          arrowOffsetY = 0;\n        setTimeout(function () {\n          /* eslint-disable no-bitwise */\n          if (rangeX > 0) { // range is greater than zero\n            // constrain to bounds\n            if (x === maxX) arrowOffsetX = barW;\n            else arrowOffsetX = ((x / rangeX) * barW) | 0;\n          }\n          if (rangeY > 0) { // range is greater than zero\n            // constrain to bounds\n            if (y === maxY) arrowOffsetY = barH;\n            else arrowOffsetY = ((y / rangeY) * barH) | 0;\n          }\n          // if arrow width is greater than bar width, center arrow and prevent horizontal dragging\n          if (arrowW >= barW) arrowOffsetX = (barW >> 1) - (arrowW >> 1); // number >> 1 - superfast bitwise divide by two and truncate (move bits over one bit discarding lowest)\n          else arrowOffsetX -= arrowW >> 1;\n          // if arrow height is greater than bar height, center arrow and prevent vertical dragging\n          if (arrowH >= barH) arrowOffsetY = (barH >> 1) - (arrowH >> 1);\n          else arrowOffsetY -= arrowH >> 1;\n          // set the arrow position based on these offsets\n          arrow.css({left: arrowOffsetX + 'px', top: arrowOffsetY + 'px'});\n          /* eslint no-bitwise: [\"error\"] */\n        });\n      }\n\n      /**\n       * Get or set a value.\n       * @param {?(\"xy\"|\"x\"|\"y\")} name\n       * @param {module:math.XYObject} value\n       * @param {module:jPicker.Slider} context\n       * @returns {module:math.XYObject|Float|undefined}\n       */\n      function val (name, value, context) {\n        const set = value !== undefined;\n        if (!set) {\n          if (isNullish(name)) name = 'xy';\n          switch (name.toLowerCase()) {\n          case 'x': return x;\n          case 'y': return y;\n          case 'xy':\n          default: return {x, y};\n          }\n        }\n        if (!isNullish(context) && context === that) return undefined;\n        let changed = false;\n\n        let newX, newY;\n        if (isNullish(name)) name = 'xy';\n        switch (name.toLowerCase()) {\n        case 'x':\n          newX = (value && ((value.x && value.x | 0) || value | 0)) || 0;\n          break;\n        case 'y':\n          newY = (value && ((value.y && value.y | 0) || value | 0)) || 0;\n          break;\n        case 'xy':\n        default:\n          newX = (value && value.x && value.x | 0) || 0;\n          newY = (value && value.y && value.y | 0) || 0;\n          break;\n        }\n        if (!isNullish(newX)) {\n          if (newX < minX) newX = minX;\n          else if (newX > maxX) newX = maxX;\n          if (x !== newX) {\n            x = newX;\n            changed = true;\n          }\n        }\n        if (!isNullish(newY)) {\n          if (newY < minY) newY = minY;\n          else if (newY > maxY) newY = maxY;\n          if (y !== newY) {\n            y = newY;\n            changed = true;\n          }\n        }\n        changed && fireChangeEvents.call(that, context || that);\n        return undefined;\n      }\n\n      /**\n      * @typedef {PlainObject} module:jPicker.MinMaxRangeX\n      * @property {Float} minX\n      * @property {Float} maxX\n      * @property {Float} rangeX\n      */\n      /**\n      * @typedef {PlainObject} module:jPicker.MinMaxRangeY\n      * @property {Float} minY\n      * @property {Float} maxY\n      * @property {Float} rangeY\n      */\n      /**\n      * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY\n      */\n\n      /**\n       *\n       * @param {\"minx\"|\"maxx\"|\"rangex\"|\"miny\"|\"maxy\"|\"rangey\"|\"all\"} name\n       * @param {module:jPicker.MinMaxRangeXY} value\n       * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}\n       */\n      function range (name, value) {\n        const set = value !== undefined;\n        if (!set) {\n          if (isNullish(name)) name = 'all';\n          switch (name.toLowerCase()) {\n          case 'minx': return minX;\n          case 'maxx': return maxX;\n          case 'rangex': return {minX, maxX, rangeX};\n          case 'miny': return minY;\n          case 'maxy': return maxY;\n          case 'rangey': return {minY, maxY, rangeY};\n          case 'all':\n          default: return {minX, maxX, rangeX, minY, maxY, rangeY};\n          }\n        }\n        let // changed = false,\n          newMinX,\n          newMaxX,\n          newMinY,\n          newMaxY;\n        if (isNullish(name)) name = 'all';\n        /* eslint-disable no-bitwise */\n        switch (name.toLowerCase()) {\n        case 'minx':\n          newMinX = (value && ((value.minX && value.minX | 0) || value | 0)) || 0;\n          break;\n        case 'maxx':\n          newMaxX = (value && ((value.maxX && value.maxX | 0) || value | 0)) || 0;\n          break;\n        case 'rangex':\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          break;\n        case 'miny':\n          newMinY = (value && ((value.minY && value.minY | 0) || value | 0)) || 0;\n          break;\n        case 'maxy':\n          newMaxY = (value && ((value.maxY && value.maxY | 0) || value | 0)) || 0;\n          break;\n        case 'rangey':\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        case 'all':\n        default:\n          newMinX = (value && value.minX && value.minX | 0) || 0;\n          newMaxX = (value && value.maxX && value.maxX | 0) || 0;\n          newMinY = (value && value.minY && value.minY | 0) || 0;\n          newMaxY = (value && value.maxY && value.maxY | 0) || 0;\n          break;\n        }\n\n        /* eslint no-bitwise: [\"error\"] */\n        if (!isNullish(newMinX) && minX !== newMinX) {\n          minX = newMinX;\n          rangeX = maxX - minX;\n        }\n        if (!isNullish(newMaxX) && maxX !== newMaxX) {\n          maxX = newMaxX;\n          rangeX = maxX - minX;\n        }\n        if (!isNullish(newMinY) && minY !== newMinY) {\n          minY = newMinY;\n          rangeY = maxY - minY;\n        }\n        if (!isNullish(newMaxY) && maxY !== newMaxY) {\n          maxY = newMaxY;\n          rangeY = maxY - minY;\n        }\n        return undefined;\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function bind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function unbind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) changeEvents.splice(i, 1);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function destroy () {\n        // unbind all possible events and null objects\n        $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);\n        bar.unbind('mousedown', mouseDown);\n        bar = null;\n        arrow = null;\n        changeEvents = null;\n      }\n      let offset,\n        timeout,\n        x = 0,\n        y = 0,\n        minX = 0,\n        maxX = 100,\n        rangeX = 100,\n        minY = 0,\n        maxY = 100,\n        rangeY = 100,\n        arrow = bar.find('img:first'), // the arrow image to drag\n        changeEvents = [];\n\n      $.extend(\n        true,\n        // public properties, methods, and event bindings - these we need\n        //   to access from other controls\n        that,\n        {\n          val,\n          range,\n          bind,\n          unbind,\n          destroy\n        }\n      );\n      // initialize this control\n      arrow.src = options.arrow && options.arrow.image;\n      arrow.w = (options.arrow && options.arrow.width) || arrow.width();\n      arrow.h = (options.arrow && options.arrow.height) || arrow.height();\n      bar.w = (options.map && options.map.width) || bar.width();\n      bar.h = (options.map && options.map.height) || bar.height();\n      // bind mousedown event\n      bar.bind('mousedown', mouseDown);\n      bind.call(that, draw);\n    }\n  }\n\n  /**\n   * Controls for all the input elements for the typing in color values.\n   * @param {external:jQuery} picker\n   * @param {external:jQuery.jPicker.Color} color\n   * @param {external:jQuery.fn.$.fn.jPicker} bindedHex\n   * @param {Float} alphaPrecision\n   * @constructor\n   */\n  class ColorValuePicker {\n    constructor (picker, color, bindedHex, alphaPrecision) {\n      const that = this; // private properties and methods\n      const inputs = picker.find('td.Text input');\n      // input box key down - use arrows to alter color\n      /**\n       *\n       * @param {Event} e\n       * @returns {Event|false|undefined}\n       */\n      function keyDown (e) {\n        if (e.target.value === '' && e.target !== hex.get(0) && ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) || isNullish(bindedHex))) return undefined;\n        if (!validateKey(e)) return e;\n        switch (e.target) {\n        case red.get(0):\n          switch (e.keyCode) {\n          case 38:\n            red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));\n            color.val('r', red.val(), e.target);\n            return false;\n          case 40:\n            red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));\n            color.val('r', red.val(), e.target);\n            return false;\n          }\n          break;\n        case green.get(0):\n          switch (e.keyCode) {\n          case 38:\n            green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));\n            color.val('g', green.val(), e.target);\n            return false;\n          case 40:\n            green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));\n            color.val('g', green.val(), e.target);\n            return false;\n          }\n          break;\n        case blue.get(0):\n          switch (e.keyCode) {\n          case 38:\n            blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));\n            color.val('b', blue.val(), e.target);\n            return false;\n          case 40:\n            blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));\n            color.val('b', blue.val(), e.target);\n            return false;\n          }\n          break;\n        case alpha && alpha.get(0):\n          switch (e.keyCode) {\n          case 38:\n            alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));\n            color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n            return false;\n          case 40:\n            alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));\n            color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n            return false;\n          }\n          break;\n        case hue.get(0):\n          switch (e.keyCode) {\n          case 38:\n            hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));\n            color.val('h', hue.val(), e.target);\n            return false;\n          case 40:\n            hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));\n            color.val('h', hue.val(), e.target);\n            return false;\n          }\n          break;\n        case saturation.get(0):\n          switch (e.keyCode) {\n          case 38:\n            saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));\n            color.val('s', saturation.val(), e.target);\n            return false;\n          case 40:\n            saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));\n            color.val('s', saturation.val(), e.target);\n            return false;\n          }\n          break;\n        case value.get(0):\n          switch (e.keyCode) {\n          case 38:\n            value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));\n            color.val('v', value.val(), e.target);\n            return false;\n          case 40:\n            value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));\n            color.val('v', value.val(), e.target);\n            return false;\n          }\n          break;\n        }\n        return undefined;\n      }\n      // input box key up - validate value and set color\n      /**\n      * @param {Event} e\n      * @returns {Event|undefined}\n      * @todo Why is this returning an event?\n      */\n      function keyUp (e) {\n        if (e.target.value === '' && e.target !== hex.get(0) &&\n          ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) ||\n          isNullish(bindedHex))) return undefined;\n        if (!validateKey(e)) return e;\n        switch (e.target) {\n        case red.get(0):\n          red.val(setValueInRange.call(that, red.val(), 0, 255));\n          color.val('r', red.val(), e.target);\n          break;\n        case green.get(0):\n          green.val(setValueInRange.call(that, green.val(), 0, 255));\n          color.val('g', green.val(), e.target);\n          break;\n        case blue.get(0):\n          blue.val(setValueInRange.call(that, blue.val(), 0, 255));\n          color.val('b', blue.val(), e.target);\n          break;\n        case alpha && alpha.get(0):\n          alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));\n          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);\n          break;\n        case hue.get(0):\n          hue.val(setValueInRange.call(that, hue.val(), 0, 360));\n          color.val('h', hue.val(), e.target);\n          break;\n        case saturation.get(0):\n          saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));\n          color.val('s', saturation.val(), e.target);\n          break;\n        case value.get(0):\n          value.val(setValueInRange.call(that, value.val(), 0, 100));\n          color.val('v', value.val(), e.target);\n          break;\n        case hex.get(0):\n          hex.val(hex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n          bindedHex && bindedHex.val(hex.val());\n          color.val('hex', hex.val() !== '' ? hex.val() : null, e.target);\n          break;\n        case bindedHex && bindedHex.get(0):\n          bindedHex.val(bindedHex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));\n          hex.val(bindedHex.val());\n          color.val('hex', bindedHex.val() !== '' ? bindedHex.val() : null, e.target);\n          break;\n        case ahex && ahex.get(0):\n          ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));\n          color.val('a', !isNullish(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);\n          break;\n        }\n        return undefined;\n      }\n      // input box blur - reset to original if value empty\n      /**\n      * @param {Event} e\n      * @returns {undefined}\n      */\n      function blur (e) {\n        if (!isNullish(color.val())) {\n          switch (e.target) {\n          case red.get(0): red.val(color.val('r')); break;\n          case green.get(0): green.val(color.val('g')); break;\n          case blue.get(0): blue.val(color.val('b')); break;\n          case alpha && alpha.get(0): alpha.val(toFixedNumeric((color.val('a') * 100) / 255, alphaPrecision)); break;\n          case hue.get(0): hue.val(color.val('h')); break;\n          case saturation.get(0): saturation.val(color.val('s')); break;\n          case value.get(0): value.val(color.val('v')); break;\n          case hex.get(0):\n          case bindedHex && bindedHex.get(0):\n            hex.val(color.val('hex'));\n            bindedHex && bindedHex.val(color.val('hex'));\n            break;\n          case ahex && ahex.get(0): ahex.val(color.val('ahex').substring(6)); break;\n          }\n        }\n      }\n      /**\n      * @param {Event} e\n      * @returns {boolean}\n      */\n      function validateKey (e) {\n        switch (e.keyCode) {\n        case 9:\n        case 16:\n        case 29:\n        case 37:\n        case 39:\n          return false;\n        case 'c'.charCodeAt():\n        case 'v'.charCodeAt():\n          if (e.ctrlKey) return false;\n        }\n        return true;\n      }\n\n      /**\n      * Constrain value within range.\n      * @param {Float|string} value\n      * @param {Float} min\n      * @param {Float} max\n      * @returns {Float|string} Returns a number or numeric string\n      */\n      function setValueInRange (value, min, max) {\n        if (value === '' || isNaN(value)) return min;\n        if (value > max) return max;\n        if (value < min) return min;\n        return value;\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @param {Element} context\n      * @returns {undefined}\n      */\n      function colorChanged (ui, context) {\n        const all = ui.val('all');\n        if (context !== red.get(0)) red.val(!isNullish(all) ? all.r : '');\n        if (context !== green.get(0)) green.val(!isNullish(all) ? all.g : '');\n        if (context !== blue.get(0)) blue.val(!isNullish(all) ? all.b : '');\n        if (alpha && context !== alpha.get(0)) alpha.val(!isNullish(all) ? toFixedNumeric((all.a * 100) / 255, alphaPrecision) : '');\n        if (context !== hue.get(0)) hue.val(!isNullish(all) ? all.h : '');\n        if (context !== saturation.get(0)) saturation.val(!isNullish(all) ? all.s : '');\n        if (context !== value.get(0)) value.val(!isNullish(all) ? all.v : '');\n        if (context !== hex.get(0) && ((bindedHex && context !== bindedHex.get(0)) || !bindedHex)) hex.val(!isNullish(all) ? all.hex : '');\n        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish(all) ? all.hex : '');\n        if (ahex && context !== ahex.get(0)) ahex.val(!isNullish(all) ? all.ahex.substring(6) : '');\n      }\n      /**\n      * Unbind all events and null objects.\n      * @returns {undefined}\n      */\n      function destroy () {\n        red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);\n        red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);\n        color.unbind(colorChanged);\n        red = null;\n        green = null;\n        blue = null;\n        alpha = null;\n        hue = null;\n        saturation = null;\n        value = null;\n        hex = null;\n        ahex = null;\n      }\n      let\n        red = inputs.eq(3),\n        green = inputs.eq(4),\n        blue = inputs.eq(5),\n        alpha = inputs.length > 7 ? inputs.eq(6) : null,\n        hue = inputs.eq(0),\n        saturation = inputs.eq(1),\n        value = inputs.eq(2),\n        hex = inputs.eq(inputs.length > 7 ? 7 : 6),\n        ahex = inputs.length > 7 ? inputs.eq(8) : null;\n      $.extend(true, that, {\n        // public properties and methods\n        destroy\n      });\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);\n      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);\n      color.bind(colorChanged);\n    }\n  }\n\n  /**\n  * @typedef {PlainObject} module:jPicker.JPickerInit\n  * @property {Integer} [a]\n  * @property {Integer} [b]\n  * @property {Integer} [g]\n  * @property {Integer} [h]\n  * @property {Integer} [r]\n  * @property {Integer} [s]\n  * @property {Integer} [v]\n  * @property {string} [hex]\n  * @property {string} [ahex]\n  */\n\n  /**\n  * @namespace {PlainObject} jPicker\n  * @memberof external:jQuery\n  */\n  $.jPicker = /** @lends external:jQuery.jPicker */ {\n    /**\n    * Array holding references to each active instance of the jPicker control\n    * @type {external:jQuery.fn.$.fn.jPicker[]}\n    */\n    List: [],\n    /**\n    * Color object - we will be able to assign by any color space type or\n    * retrieve any color space info.\n    * We want this public so we can optionally assign new color objects to\n    * initial values using inputs other than a string hex value (also supported)\n    * Note: JSDoc didn't document when expressed here as an ES6 Class.\n    * @namespace\n    * @class\n    * @memberof external:jQuery.jPicker\n    * @param {module:jPicker.JPickerInit} init\n    */\n    Color: function (init) { // eslint-disable-line object-shorthand\n      const that = this;\n      /**\n       *\n       * @param {module:jPicker.Slider} context\n       * @returns {undefined}\n       */\n      function fireChangeEvents (context) {\n        for (let i = 0; i < changeEvents.length; i++) changeEvents[i].call(that, that, context);\n      }\n\n      /**\n       * @param {string|\"ahex\"|\"hex\"|\"all\"|\"\"|null|undefined} name String composed of letters \"r\", \"g\", \"b\", \"a\", \"h\", \"s\", and/or \"v\"\n       * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]\n       * @param {external:jQuery.jPicker.Color} context\n       * @returns {module:jPicker.JPickerInit|string|null|undefined}\n       */\n      function val (name, value, context) {\n        // Kind of ugly\n        const set = Boolean(value);\n        if (set && value.ahex === '') value.ahex = '00000000';\n        if (!set) {\n          let ret;\n          if (isNullish(name) || name === '') name = 'all';\n          if (isNullish(r)) return null;\n          switch (name.toLowerCase()) {\n          case 'ahex': return ColorMethods.rgbaToHex({r, g, b, a});\n          case 'hex': return val('ahex').substring(0, 6);\n          case 'all': return {\n            r, g, b, a, h, s, v,\n            hex: val.call(that, 'hex'),\n            ahex: val.call(that, 'ahex')\n          };\n          default: {\n            ret = {};\n            const nameLength = name.length;\n            [...name].forEach((ch) => {\n              switch (ch) {\n              case 'r':\n                if (nameLength === 1) ret = r;\n                else ret.r = r;\n                break;\n              case 'g':\n                if (nameLength === 1) ret = g;\n                else ret.g = g;\n                break;\n              case 'b':\n                if (nameLength === 1) ret = b;\n                else ret.b = b;\n                break;\n              case 'a':\n                if (nameLength === 1) ret = a;\n                else ret.a = a;\n                break;\n              case 'h':\n                if (nameLength === 1) ret = h;\n                else ret.h = h;\n                break;\n              case 's':\n                if (nameLength === 1) ret = s;\n                else ret.s = s;\n                break;\n              case 'v':\n                if (nameLength === 1) ret = v;\n                else ret.v = v;\n                break;\n              }\n            });\n          }\n          }\n          return typeof ret === 'object' && !Object.keys(ret).length\n            ? val.call(that, 'all')\n            : ret;\n        }\n        if (!isNullish(context) && context === that) return undefined;\n        if (isNullish(name)) name = '';\n\n        let changed = false;\n        if (isNullish(value)) {\n          if (!isNullish(r)) {\n            r = null;\n            changed = true;\n          }\n          if (!isNullish(g)) {\n            g = null;\n            changed = true;\n          }\n          if (!isNullish(b)) {\n            b = null;\n            changed = true;\n          }\n          if (!isNullish(a)) {\n            a = null;\n            changed = true;\n          }\n          if (!isNullish(h)) {\n            h = null;\n            changed = true;\n          }\n          if (!isNullish(s)) {\n            s = null;\n            changed = true;\n          }\n          if (!isNullish(v)) {\n            v = null;\n            changed = true;\n          }\n          changed && fireChangeEvents.call(that, context || that);\n          return undefined;\n        }\n        switch (name.toLowerCase()) {\n        case 'ahex':\n        case 'hex': {\n          const ret = ColorMethods.hexToRgba((value && (value.ahex || value.hex)) || value || 'none');\n          val.call(that, 'rgba', {\n            r: ret.r,\n            g: ret.g,\n            b: ret.b,\n            a: name === 'ahex'\n              ? ret.a\n              : !isNullish(a)\n                ? a\n                : 255\n          }, context);\n          break;\n        } default: {\n          if (value && (!isNullish(value.ahex) || !isNullish(value.hex))) {\n            val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);\n            return undefined;\n          }\n          const newV = {};\n          let rgb = false, hsv = false;\n          if (value.r !== undefined && !name.includes('r')) name += 'r';\n          if (value.g !== undefined && !name.includes('g')) name += 'g';\n          if (value.b !== undefined && !name.includes('b')) name += 'b';\n          if (value.a !== undefined && !name.includes('a')) name += 'a';\n          if (value.h !== undefined && !name.includes('h')) name += 'h';\n          if (value.s !== undefined && !name.includes('s')) name += 's';\n          if (value.v !== undefined && !name.includes('v')) name += 'v';\n          [...name].forEach((ch) => {\n            switch (ch) {\n            case 'r':\n              if (hsv) return;\n              rgb = true;\n              newV.r = (value.r && value.r | 0) || (value | 0) || 0;\n              if (newV.r < 0) newV.r = 0;\n              else if (newV.r > 255) newV.r = 255;\n              if (r !== newV.r) {\n                ({r} = newV);\n                changed = true;\n              }\n              break;\n            case 'g':\n              if (hsv) return;\n              rgb = true;\n              newV.g = (value && value.g && value.g | 0) || (value && value | 0) || 0;\n              if (newV.g < 0) newV.g = 0;\n              else if (newV.g > 255) newV.g = 255;\n              if (g !== newV.g) {\n                ({g} = newV);\n                changed = true;\n              }\n              break;\n            case 'b':\n              if (hsv) return;\n              rgb = true;\n              newV.b = (value && value.b && value.b | 0) || (value && value | 0) || 0;\n              if (newV.b < 0) newV.b = 0;\n              else if (newV.b > 255) newV.b = 255;\n              if (b !== newV.b) {\n                ({b} = newV);\n                changed = true;\n              }\n              break;\n            case 'a':\n              newV.a = value && !isNullish(value.a) ? value.a | 0 : value | 0;\n              if (newV.a < 0) newV.a = 0;\n              else if (newV.a > 255) newV.a = 255;\n              if (a !== newV.a) {\n                ({a} = newV);\n                changed = true;\n              }\n              break;\n            case 'h':\n              if (rgb) return;\n              hsv = true;\n              newV.h = (value && value.h && value.h | 0) || (value && value | 0) || 0;\n              if (newV.h < 0) newV.h = 0;\n              else if (newV.h > 360) newV.h = 360;\n              if (h !== newV.h) {\n                ({h} = newV);\n                changed = true;\n              }\n              break;\n            case 's':\n              if (rgb) return;\n              hsv = true;\n              newV.s = !isNullish(value.s) ? value.s | 0 : value | 0;\n              if (newV.s < 0) newV.s = 0;\n              else if (newV.s > 100) newV.s = 100;\n              if (s !== newV.s) {\n                ({s} = newV);\n                changed = true;\n              }\n              break;\n            case 'v':\n              if (rgb) return;\n              hsv = true;\n              newV.v = !isNullish(value.v) ? value.v | 0 : value | 0;\n              if (newV.v < 0) newV.v = 0;\n              else if (newV.v > 100) newV.v = 100;\n              if (v !== newV.v) {\n                ({v} = newV);\n                changed = true;\n              }\n              break;\n            }\n          });\n          if (changed) {\n            if (rgb) {\n              r = r || 0;\n              g = g || 0;\n              b = b || 0;\n              const ret = ColorMethods.rgbToHsv({r, g, b});\n              ({h, s, v} = ret);\n            } else if (hsv) {\n              h = h || 0;\n              s = !isNullish(s) ? s : 100;\n              v = !isNullish(v) ? v : 100;\n              const ret = ColorMethods.hsvToRgb({h, s, v});\n              ({r, g, b} = ret);\n            }\n            a = !isNullish(a) ? a : 255;\n            fireChangeEvents.call(that, context || that);\n          }\n          break;\n        }\n        }\n        return undefined;\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function bind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback === 'function') changeEvents.push(callback);\n      }\n      /**\n      * @param {GenericCallback} callback\n      * @returns {undefined}\n      */\n      function unbind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks\n        if (typeof callback !== 'function') return;\n        let i;\n        while ((i = changeEvents.includes(callback))) {\n          changeEvents.splice(i, 1);\n        }\n      }\n      /**\n      * Unset `changeEvents`\n      * @returns {undefined}\n      */\n      function destroy () {\n        changeEvents = null;\n      }\n      let r, g, b, a, h, s, v, changeEvents = [];\n\n      $.extend(true, that, {\n        // public properties and methods\n        val,\n        bind,\n        unbind,\n        destroy\n      });\n      if (init) {\n        if (!isNullish(init.ahex)) {\n          val('ahex', init);\n        } else if (!isNullish(init.hex)) {\n          val(\n            (!isNullish(init.a) ? 'a' : '') + 'hex',\n            !isNullish(init.a)\n              ? {ahex: init.hex + ColorMethods.intToHex(init.a)}\n              : init\n          );\n        } else if (!isNullish(init.r) && !isNullish(init.g) && !isNullish(init.b)) {\n          val('rgb' + (!isNullish(init.a) ? 'a' : ''), init);\n        } else if (!isNullish(init.h) && !isNullish(init.s) && !isNullish(init.v)) {\n          val('hsv' + (!isNullish(init.a) ? 'a' : ''), init);\n        }\n      }\n    },\n    /**\n    * color conversion methods  - make public to give use to external scripts\n    * @namespace\n    */\n    ColorMethods: {\n      /**\n      * @typedef {PlainObject} module:jPicker.RGBA\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      * @property {Integer} a\n      */\n      /**\n      * @typedef {PlainObject} module:jPicker.RGB\n      * @property {Integer} r\n      * @property {Integer} g\n      * @property {Integer} b\n      */\n      /**\n      * @param {string} hex\n      * @returns {module:jPicker.RGBA}\n      */\n      hexToRgba (hex) {\n        if (hex === '' || hex === 'none') return {r: null, g: null, b: null, a: null};\n        hex = this.validateHex(hex);\n        let r = '00', g = '00', b = '00', a = '255';\n        if (hex.length === 6) hex += 'ff';\n        if (hex.length > 6) {\n          r = hex.substring(0, 2);\n          g = hex.substring(2, 4);\n          b = hex.substring(4, 6);\n          a = hex.substring(6, hex.length);\n        } else {\n          if (hex.length > 4) {\n            r = hex.substring(4, hex.length);\n            hex = hex.substring(0, 4);\n          }\n          if (hex.length > 2) {\n            g = hex.substring(2, hex.length);\n            hex = hex.substring(0, 2);\n          }\n          if (hex.length > 0) b = hex.substring(0, hex.length);\n        }\n        return {\n          r: this.hexToInt(r), g: this.hexToInt(g), b: this.hexToInt(b), a: this.hexToInt(a)\n        };\n      },\n      /**\n      * @param {string} hex\n      * @returns {string}\n      */\n      validateHex (hex) {\n        // if (typeof hex === 'object') return '';\n        hex = hex.toLowerCase().replace(/[^a-f0-9]/g, '');\n        if (hex.length > 8) hex = hex.substring(0, 8);\n        return hex;\n      },\n      /**\n      * @param {module:jPicker.RGBA} rgba\n      * @returns {string}\n      */\n      rgbaToHex (rgba) {\n        return this.intToHex(rgba.r) + this.intToHex(rgba.g) + this.intToHex(rgba.b) + this.intToHex(rgba.a);\n      },\n      /**\n      * @param {Integer} dec\n      * @returns {string}\n      */\n      intToHex (dec) {\n        let result = (dec | 0).toString(16);\n        if (result.length === 1) result = ('0' + result);\n        return result.toLowerCase();\n      },\n      /**\n      * @param {string} hex\n      * @returns {Integer}\n      */\n      hexToInt (hex) {\n        return parseInt(hex, 16);\n      },\n      /**\n      * @typedef {PlainObject} module:jPicker.HSV\n      * @property {Integer} h\n      * @property {Integer} s\n      * @property {Integer} v\n      */\n      /**\n      * @param {module:jPicker.RGB} rgb\n      * @returns {module:jPicker.HSV}\n      */\n      rgbToHsv (rgb) {\n        const r = rgb.r / 255, g = rgb.g / 255, b = rgb.b / 255, hsv = {h: 0, s: 0, v: 0};\n        let min = 0, max = 0;\n        if (r >= g && r >= b) {\n          max = r;\n          min = g > b ? b : g;\n        } else if (g >= b && g >= r) {\n          max = g;\n          min = r > b ? b : r;\n        } else {\n          max = b;\n          min = g > r ? r : g;\n        }\n        hsv.v = max;\n        hsv.s = max ? (max - min) / max : 0;\n        let delta;\n        if (!hsv.s) hsv.h = 0;\n        else {\n          delta = max - min;\n          if (r === max) hsv.h = (g - b) / delta;\n          else if (g === max) hsv.h = 2 + (b - r) / delta;\n          else hsv.h = 4 + (r - g) / delta;\n          hsv.h = parseInt(hsv.h * 60);\n          if (hsv.h < 0) hsv.h += 360;\n        }\n        hsv.s = (hsv.s * 100) | 0;\n        hsv.v = (hsv.v * 100) | 0;\n        return hsv;\n      },\n      /**\n      * @param {module:jPicker.HSV} hsv\n      * @returns {module:jPicker.RGB}\n      */\n      hsvToRgb (hsv) {\n        const rgb = {r: 0, g: 0, b: 0, a: 100};\n        let {h, s, v} = hsv;\n        if (s === 0) {\n          if (v === 0) rgb.r = rgb.g = rgb.b = 0;\n          else rgb.r = rgb.g = rgb.b = (v * 255 / 100) | 0;\n        } else {\n          if (h === 360) h = 0;\n          h /= 60;\n          s /= 100;\n          v /= 100;\n          const i = h | 0,\n            f = h - i,\n            p = v * (1 - s),\n            q = v * (1 - (s * f)),\n            t = v * (1 - (s * (1 - f)));\n          switch (i) {\n          case 0:\n            rgb.r = v;\n            rgb.g = t;\n            rgb.b = p;\n            break;\n          case 1:\n            rgb.r = q;\n            rgb.g = v;\n            rgb.b = p;\n            break;\n          case 2:\n            rgb.r = p;\n            rgb.g = v;\n            rgb.b = t;\n            break;\n          case 3:\n            rgb.r = p;\n            rgb.g = q;\n            rgb.b = v;\n            break;\n          case 4:\n            rgb.r = t;\n            rgb.g = p;\n            rgb.b = v;\n            break;\n          case 5:\n            rgb.r = v;\n            rgb.g = p;\n            rgb.b = q;\n            break;\n          }\n          rgb.r = (rgb.r * 255) | 0;\n          rgb.g = (rgb.g * 255) | 0;\n          rgb.b = (rgb.b * 255) | 0;\n        }\n        return rgb;\n      }\n    }\n  };\n  const {Color, List, ColorMethods} = $.jPicker; // local copies for YUI compressor\n  /**\n   * @function external:jQuery.fn.jPicker\n   * @see {@link external:jQuery.fn.$.fn.jPicker}\n   */\n\n  /**\n  * Will be bound to active {@link jQuery.jPicker.Color}\n  * @callback module:jPicker.LiveCallback\n  * @param {external:jQuery} ui\n  * @param {Element} context\n  * @returns {undefined}\n  */\n  /**\n  * @callback module:jPicker.CommitCallback\n  * @param {external:jQuery.jPicker.Color} activeColor\n  * @param {external:jQuery} okButton\n  * @returns {undefined} Return value not used.\n  */\n  /**\n   * @callback module:jPicker.CancelCallback\n   * @param {external:jQuery.jPicker.Color} activeColor\n   * @param {external:jQuery} cancelButton\n   * @returns {undefined} Return value not used.\n   */\n  /**\n  * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't\n  *   get us treated as a function as well as a namespace (even with `@function name`),\n  *   so we use an approach to add a redundant `$.fn.` in the name.\n  * @namespace\n  * @memberof external:jQuery.fn\n  * @param {external:jQuery.fn.jPickerOptions} options\n  * @param {module:jPicker.CommitCallback} [commitCallback]\n  * @param {module:jPicker.LiveCallback} [liveCallback]\n  * @param {module:jPicker.CancelCallback} [cancelCallback]\n  * @returns {external:jQuery}\n  */\n  $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {\n    return this.each(function () {\n      const that = this,\n        settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor\n      if ($(that).get(0).nodeName.toLowerCase() === 'input') { // Add color picker icon if binding to an input element and bind the events to the input\n        $.extend(true, settings, {\n          window: {\n            bindToInput: true,\n            expandable: true,\n            input: $(that)\n          }\n        });\n        if ($(that).val() === '') {\n          settings.color.active = new Color({hex: null});\n          settings.color.current = new Color({hex: null});\n        } else if (ColorMethods.validateHex($(that).val())) {\n          settings.color.active = new Color({hex: $(that).val(), a: settings.color.active.val('a')});\n          settings.color.current = new Color({hex: $(that).val(), a: settings.color.active.val('a')});\n        }\n      }\n      if (settings.window.expandable) {\n        $(that).after('<span class=\"jPicker\"><span class=\"Icon\"><span class=\"Color\">&nbsp;</span><span class=\"Alpha\">&nbsp;</span><span class=\"Image\" title=\"Click To Open Color Picker\">&nbsp;</span><span class=\"Container\">&nbsp;</span></span></span>');\n      } else {\n        settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results\n      }\n      const isLessThanIE7 = parseFloat(navigator.appVersion.split('MSIE')[1]) < 7 && document.body.filters; // needed to run the AlphaImageLoader function for IE6\n      // set color mode and update visuals for the new color mode\n      /**\n       *\n       * @param {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} colorMode\n       * @throws {Error} Invalid mode\n       * @returns {undefined}\n       */\n      function setColorMode (colorMode) {\n        const {active} = color, // local copies for YUI compressor\n          // {clientPath} = images,\n          hex = active.val('hex');\n        let rgbMap, rgbBar;\n        settings.color.mode = colorMode;\n        switch (colorMode) {\n        case 'h':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setImgLoc.call(that, colorMapL1, 0);\n            setAlpha.call(that, colorMapL1, 100);\n            setImgLoc.call(that, colorMapL2, 260);\n            setAlpha.call(that, colorMapL2, 100);\n            setBG.call(that, colorBarDiv, 'transparent');\n            setImgLoc.call(that, colorBarL1, 0);\n            setAlpha.call(that, colorBarL1, 100);\n            setImgLoc.call(that, colorBarL2, 260);\n            setAlpha.call(that, colorBarL2, 100);\n            setImgLoc.call(that, colorBarL3, 260);\n            setAlpha.call(that, colorBarL3, 100);\n            setImgLoc.call(that, colorBarL4, 260);\n            setAlpha.call(that, colorBarL4, 100);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 100, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 360});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('s'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 360 - active.val('h'), colorBar);\n          break;\n        case 's':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setImgLoc.call(that, colorMapL1, -260);\n            setImgLoc.call(that, colorMapL2, -520);\n            setImgLoc.call(that, colorBarL1, -260);\n            setImgLoc.call(that, colorBarL2, -520);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 100 - active.val('s'), colorBar);\n          break;\n        case 'v':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, '000000');\n            setImgLoc.call(that, colorMapL1, -780);\n            setImgLoc.call(that, colorMapL2, 260);\n            setBG.call(that, colorBarDiv, hex);\n            setImgLoc.call(that, colorBarL1, -520);\n            setImgLoc.call(that, colorBarL2, 260);\n            setAlpha.call(that, colorBarL2, 100);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 100});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('s')}, colorMap);\n          colorBar.val('y', 100 - active.val('v'), colorBar);\n          break;\n        case 'r':\n          rgbMap = -1040;\n          rgbBar = -780;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('r'), colorBar);\n          break;\n        case 'g':\n          rgbMap = -1560;\n          rgbBar = -1820;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('b'), y: 255 - active.val('r')}, colorMap);\n          colorBar.val('y', 255 - active.val('g'), colorBar);\n          break;\n        case 'b':\n          rgbMap = -2080;\n          rgbBar = -2860;\n          colorMap.range('all', {minX: 0, maxX: 255, minY: 0, maxY: 255});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('r'), y: 255 - active.val('g')}, colorMap);\n          colorBar.val('y', 255 - active.val('b'), colorBar);\n          break;\n        case 'a':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setImgLoc.call(that, colorMapL1, -260);\n            setImgLoc.call(that, colorMapL2, -520);\n            setImgLoc.call(that, colorBarL1, 260);\n            setImgLoc.call(that, colorBarL2, 260);\n            setAlpha.call(that, colorBarL2, 100);\n            setImgLoc.call(that, colorBarL6, 0);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          colorMap.range('all', {minX: 0, maxX: 360, minY: 0, maxY: 100});\n          colorBar.range('rangeY', {minY: 0, maxY: 255});\n          if (isNullish(active.val('ahex'))) break;\n          colorMap.val('xy', {x: active.val('h'), y: 100 - active.val('v')}, colorMap);\n          colorBar.val('y', 255 - active.val('a'), colorBar);\n          break;\n        default:\n          throw new Error('Invalid Mode');\n        }\n        switch (colorMode) {\n        case 'h':\n          break;\n        case 's':\n        case 'v':\n        case 'a':\n          setTimeout(function () {\n            setAlpha.call(that, colorMapL1, 100);\n            setAlpha.call(that, colorBarL1, 100);\n            setImgLoc.call(that, colorBarL3, 260);\n            setAlpha.call(that, colorBarL3, 100);\n            setImgLoc.call(that, colorBarL4, 260);\n            setAlpha.call(that, colorBarL4, 100);\n          }, 0);\n          break;\n        case 'r':\n        case 'g':\n        case 'b':\n          setTimeout(function () {\n            setBG.call(that, colorMapDiv, 'transparent');\n            setBG.call(that, colorBarDiv, 'transparent');\n            setAlpha.call(that, colorBarL1, 100);\n            setAlpha.call(that, colorMapL1, 100);\n            setImgLoc.call(that, colorMapL1, rgbMap);\n            setImgLoc.call(that, colorMapL2, rgbMap - 260);\n            setImgLoc.call(that, colorBarL1, rgbBar - 780);\n            setImgLoc.call(that, colorBarL2, rgbBar - 520);\n            setImgLoc.call(that, colorBarL3, rgbBar);\n            setImgLoc.call(that, colorBarL4, rgbBar - 260);\n            setImgLoc.call(that, colorBarL6, 260);\n            setAlpha.call(that, colorBarL6, 100);\n          }, 0);\n          break;\n        }\n        if (isNullish(active.val('ahex'))) return;\n        activeColorChanged.call(that, active);\n      }\n      /**\n       * Update color when user changes text values.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function activeColorChanged (ui, context) {\n        if (isNullish(context) || (context !== colorBar && context !== colorMap)) positionMapAndBarArrows.call(that, ui, context);\n        setTimeout(function () {\n          updatePreview.call(that, ui);\n          updateMapVisuals.call(that, ui);\n          updateBarVisuals.call(that, ui);\n        }, 0);\n      }\n\n      /**\n       * User has dragged the ColorMap pointer.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function mapValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorMap && isNullish(active.val())) return;\n        const xy = ui.val('all');\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('sv', {s: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 's':\n        case 'a':\n          active.val('hv', {h: xy.x, v: 100 - xy.y}, context);\n          break;\n        case 'v':\n          active.val('hs', {h: xy.x, s: 100 - xy.y}, context);\n          break;\n        case 'r':\n          active.val('gb', {g: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'g':\n          active.val('rb', {r: 255 - xy.y, b: xy.x}, context);\n          break;\n        case 'b':\n          active.val('rg', {r: xy.x, g: 255 - xy.y}, context);\n          break;\n        }\n      }\n\n      /**\n       * User has dragged the ColorBar slider.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function colorBarValueChanged (ui, context) {\n        const {active} = color;\n        if (context !== colorBar && isNullish(active.val())) return;\n        switch (settings.color.mode) {\n        case 'h':\n          active.val('h', {h: 360 - ui.val('y')}, context);\n          break;\n        case 's':\n          active.val('s', {s: 100 - ui.val('y')}, context);\n          break;\n        case 'v':\n          active.val('v', {v: 100 - ui.val('y')}, context);\n          break;\n        case 'r':\n          active.val('r', {r: 255 - ui.val('y')}, context);\n          break;\n        case 'g':\n          active.val('g', {g: 255 - ui.val('y')}, context);\n          break;\n        case 'b':\n          active.val('b', {b: 255 - ui.val('y')}, context);\n          break;\n        case 'a':\n          active.val('a', 255 - ui.val('y'), context);\n          break;\n        }\n      }\n\n      /**\n       * Position map and bar arrows to match current color.\n       * @param {external:jQuery} ui\n       * @param {?module:jPicker.Slider} context\n       * @returns {undefined}\n      */\n      function positionMapAndBarArrows (ui, context) {\n        if (context !== colorMap) {\n          switch (settings.color.mode) {\n          case 'h': {\n            const sv = ui.val('sv');\n            colorMap.val('xy', {x: !isNullish(sv) ? sv.s : 100, y: 100 - (!isNullish(sv) ? sv.v : 100)}, context);\n            break;\n          } case 's':\n          // Fall through\n          case 'a': {\n            const hv = ui.val('hv');\n            colorMap.val('xy', {x: (hv && hv.h) || 0, y: 100 - (!isNullish(hv) ? hv.v : 100)}, context);\n            break;\n          } case 'v': {\n            const hs = ui.val('hs');\n            colorMap.val('xy', {x: (hs && hs.h) || 0, y: 100 - (!isNullish(hs) ? hs.s : 100)}, context);\n            break;\n          } case 'r': {\n            const bg = ui.val('bg');\n            colorMap.val('xy', {x: (bg && bg.b) || 0, y: 255 - ((bg && bg.g) || 0)}, context);\n            break;\n          } case 'g': {\n            const br = ui.val('br');\n            colorMap.val('xy', {x: (br && br.b) || 0, y: 255 - ((br && br.r) || 0)}, context);\n            break;\n          } case 'b': {\n            const rg = ui.val('rg');\n            colorMap.val('xy', {x: (rg && rg.r) || 0, y: 255 - ((rg && rg.g) || 0)}, context);\n            break;\n          }\n          }\n        }\n        if (context !== colorBar) {\n          switch (settings.color.mode) {\n          case 'h':\n            colorBar.val('y', 360 - (ui.val('h') || 0), context);\n            break;\n          case 's': {\n            const s = ui.val('s');\n            colorBar.val('y', 100 - (!isNullish(s) ? s : 100), context);\n            break;\n          } case 'v': {\n            const v = ui.val('v');\n            colorBar.val('y', 100 - (!isNullish(v) ? v : 100), context);\n            break;\n          } case 'r':\n            colorBar.val('y', 255 - (ui.val('r') || 0), context);\n            break;\n          case 'g':\n            colorBar.val('y', 255 - (ui.val('g') || 0), context);\n            break;\n          case 'b':\n            colorBar.val('y', 255 - (ui.val('b') || 0), context);\n            break;\n          case 'a': {\n            const a = ui.val('a');\n            colorBar.val('y', 255 - (!isNullish(a) ? a : 255), context);\n            break;\n          }\n          }\n        }\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function updatePreview (ui) {\n        try {\n          const all = ui.val('all');\n          activePreview.css({backgroundColor: (all && '#' + all.hex) || 'transparent'});\n          setAlpha.call(that, activePreview, (all && toFixedNumeric((all.a * 100) / 255, 4)) || 0);\n        } catch (e) { }\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function updateMapVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h':\n          setBG.call(that, colorMapDiv, new Color({h: ui.val('h') || 0, s: 100, v: 100}).val('hex'));\n          break;\n        case 's':\n        case 'a': {\n          const s = ui.val('s');\n          setAlpha.call(that, colorMapL2, 100 - (!isNullish(s) ? s : 100));\n          break;\n        } case 'v': {\n          const v = ui.val('v');\n          setAlpha.call(that, colorMapL1, !isNullish(v) ? v : 100);\n          break;\n        } case 'r':\n          setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));\n          break;\n        case 'g':\n          setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));\n          break;\n        case 'b':\n          setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));\n          break;\n        }\n        const a = ui.val('a');\n        setAlpha.call(that, colorMapL3, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function updateBarVisuals (ui) {\n        switch (settings.color.mode) {\n        case 'h': {\n          const a = ui.val('a');\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));\n          break;\n        } case 's': {\n          const hva = ui.val('hva'),\n            saturatedColor = new Color({h: (hva && hva.h) || 0, s: 100, v: !isNullish(hva) ? hva.v : 100});\n          setBG.call(that, colorBarDiv, saturatedColor.val('hex'));\n          setAlpha.call(that, colorBarL2, 100 - (!isNullish(hva) ? hva.v : 100));\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - ((hva && hva.a) || 0)) * 100) / 255, 4));\n          break;\n        } case 'v': {\n          const hsa = ui.val('hsa'),\n            valueColor = new Color({h: (hsa && hsa.h) || 0, s: !isNullish(hsa) ? hsa.s : 100, v: 100});\n          setBG.call(that, colorBarDiv, valueColor.val('hex'));\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - ((hsa && hsa.a) || 0)) * 100) / 255, 4));\n          break;\n        } case 'r':\n        case 'g':\n        case 'b': {\n          const rgba = ui.val('rgba');\n          let hValue = 0, vValue = 0;\n          if (settings.color.mode === 'r') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          } else if (settings.color.mode === 'g') {\n            hValue = (rgba && rgba.b) || 0;\n            vValue = (rgba && rgba.r) || 0;\n          } else if (settings.color.mode === 'b') {\n            hValue = (rgba && rgba.r) || 0;\n            vValue = (rgba && rgba.g) || 0;\n          }\n          const middle = vValue > hValue ? hValue : vValue;\n          setAlpha.call(that, colorBarL2, hValue > vValue ? toFixedNumeric(((hValue - vValue) / (255 - vValue)) * 100, 4) : 0);\n          setAlpha.call(that, colorBarL3, vValue > hValue ? toFixedNumeric(((vValue - hValue) / (255 - hValue)) * 100, 4) : 0);\n          setAlpha.call(that, colorBarL4, toFixedNumeric((middle / 255) * 100, 4));\n          setAlpha.call(that, colorBarL5, toFixedNumeric(((255 - ((rgba && rgba.a) || 0)) * 100) / 255, 4));\n          break;\n        } case 'a': {\n          const a = ui.val('a');\n          setBG.call(that, colorBarDiv, ui.val('hex') || '000000');\n          setAlpha.call(that, colorBarL5, !isNullish(a) ? 0 : 100);\n          setAlpha.call(that, colorBarL6, !isNullish(a) ? 100 : 0);\n          break;\n        }\n        }\n      }\n      /**\n      * @param {external:jQuery} el\n      * @param {string} [c=\"transparent\"]\n      * @returns {undefined}\n      */\n      function setBG (el, c) {\n        el.css({backgroundColor: (c && c.length === 6 && '#' + c) || 'transparent'});\n      }\n\n      /**\n      * @param {external:jQuery} img\n      * @param {string} src The image source\n      * @returns {undefined}\n      */\n      function setImg (img, src) {\n        if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {\n          img.attr('pngSrc', src);\n          img.css({backgroundImage: 'none', filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src + '\\', sizingMethod=\\'scale\\')'});\n        } else img.css({backgroundImage: 'url(\\'' + src + '\\')'});\n      }\n      /**\n      * @param {external:jQuery} img\n      * @param {Float} y\n      * @returns {undefined}\n      */\n      function setImgLoc (img, y) {\n        img.css({top: y + 'px'});\n      }\n      /**\n      * @param {external:jQuery} obj\n      * @param {Float} alpha\n      * @returns {undefined}\n      */\n      function setAlpha (obj, alpha) {\n        obj.css({visibility: alpha > 0 ? 'visible' : 'hidden'});\n        if (alpha > 0 && alpha < 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (!isNullish(src) && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({\n                filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src +\n                  '\\', sizingMethod=\\'scale\\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'\n              });\n            } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n          } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});\n        } else if (alpha === 0 || alpha === 100) {\n          if (isLessThanIE7) {\n            const src = obj.attr('pngSrc');\n            if (!isNullish(src) && (\n              src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')\n            )) {\n              obj.css({\n                filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\\'' + src +\n                '\\', sizingMethod=\\'scale\\')'\n              });\n            } else obj.css({opacity: ''});\n          } else obj.css({opacity: ''});\n        }\n      }\n\n      /**\n      * Revert color to original color when opened.\n      * @returns {undefined}\n      */\n      function revertColor () {\n        color.active.val('ahex', color.current.val('ahex'));\n      }\n      /**\n      * Commit the color changes.\n      * @returns {undefined}\n      */\n      function commitColor () {\n        color.current.val('ahex', color.active.val('ahex'));\n      }\n      /**\n      * @param {Event} e\n      * @returns {undefined}\n      */\n      function radioClicked (e) {\n        $(this).parents('tbody:first').find('input:radio[value!=\"' + e.target.value + '\"]').removeAttr('checked');\n        setColorMode.call(that, e.target.value);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function currentClicked () {\n        revertColor.call(that);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function cancelClicked () {\n        revertColor.call(that);\n        settings.window.expandable && hide.call(that);\n        typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function okClicked () {\n        commitColor.call(that);\n        settings.window.expandable && hide.call(that);\n        typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function iconImageClicked () {\n        show.call(that);\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function currentColorChanged (ui) {\n        const hex = ui.val('hex');\n        currentPreview.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call(that, currentPreview, toFixedNumeric(((ui.val('a') || 0) * 100) / 255, 4));\n      }\n      /**\n      * @param {external:jQuery} ui\n      * @returns {undefined}\n      */\n      function expandableColorChanged (ui) {\n        const hex = ui.val('hex');\n        const va = ui.val('va');\n        iconColor.css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        setAlpha.call(that, iconAlpha, toFixedNumeric(((255 - ((va && va.a) || 0)) * 100) / 255, 4));\n        if (settings.window.bindToInput && settings.window.updateInputColor) {\n          settings.window.input.css({\n            backgroundColor: (hex && '#' + hex) || 'transparent',\n            color: isNullish(va) || va.v > 75 ? '#000000' : '#ffffff'\n          });\n        }\n      }\n      /**\n      * @param {Event} e\n      * @returns {undefined}\n      */\n      function moveBarMouseDown (e) {\n        // const {element} = settings.window, // local copies for YUI compressor\n        //     {page} = settings.window;\n        elementStartX = parseInt(container.css('left'));\n        elementStartY = parseInt(container.css('top'));\n        pageStartX = e.pageX;\n        pageStartY = e.pageY;\n        // bind events to document to move window - we will unbind these on mouseup\n        $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);\n        e.preventDefault(); // prevent attempted dragging of the column\n      }\n      /**\n      * @param {Event} e\n      * @returns {false}\n      */\n      function documentMouseMove (e) {\n        container.css({\n          left: elementStartX - (pageStartX - e.pageX) + 'px',\n          top: elementStartY - (pageStartY - e.pageY) + 'px'\n        });\n        if (settings.window.expandable && !$.support.boxModel) {\n          container.prev().css({\n            left: container.css('left'),\n            top: container.css('top')\n          });\n        }\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      /**\n      * @param {Event} e\n      * @returns {false}\n      */\n      function documentMouseUp (e) {\n        $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);\n        e.stopPropagation();\n        e.preventDefault();\n        return false;\n      }\n      /**\n      * @param {Event} e\n      * @returns {false}\n      */\n      function quickPickClicked (e) {\n        e.preventDefault();\n        e.stopPropagation();\n        color.active.val('ahex', $(this).attr('title') || null, e.target);\n        return false;\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function show () {\n        color.current.val('ahex', color.active.val('ahex'));\n        /**\n        *\n        * @returns {undefined}\n        */\n        function attachIFrame () {\n          if (!settings.window.expandable || $.support.boxModel) return;\n          const table = container.find('table:first');\n          container.before('<iframe/>');\n          container.prev().css({\n            width: table.width(),\n            height: container.height(),\n            opacity: 0,\n            position: 'absolute',\n            left: container.css('left'),\n            top: container.css('top')\n          });\n        }\n        if (settings.window.expandable) {\n          $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n          container.css({zIndex: 20});\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeIn(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'slide':\n          container.slideDown(settings.window.effects.speed.show, attachIFrame);\n          break;\n        case 'show':\n        default:\n          container.show(settings.window.effects.speed.show, attachIFrame);\n          break;\n        }\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function hide () {\n        /**\n        *\n        * @returns {undefined}\n        */\n        function removeIFrame () {\n          if (settings.window.expandable) container.css({zIndex: 10});\n          if (!settings.window.expandable || $.support.boxModel) return;\n          container.prev().remove();\n        }\n        switch (settings.window.effects.type) {\n        case 'fade':\n          container.fadeOut(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'slide':\n          container.slideUp(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        case 'show':\n        default:\n          container.hide(settings.window.effects.speed.hide, removeIFrame);\n          break;\n        }\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function initialize () {\n        const win = settings.window,\n          popup = win.expandable ? $(that).next().find('.Container:first') : null;\n        container = win.expandable ? $('<div/>') : $(that);\n        container.addClass('jPicker Container');\n        if (win.expandable) container.hide();\n        container.get(0).onselectstart = function (e) {\n          if (e.target.nodeName.toLowerCase() !== 'input') return false;\n          return true;\n        };\n        // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and\n        // this control really is tabular data, so I believe it is the right move\n        const all = color.active.val('all');\n        if (win.alphaPrecision < 0) win.alphaPrecision = 0;\n        else if (win.alphaPrecision > 2) win.alphaPrecision = 2;\n        const controlHtml = `<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ${win.expandable ? `<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>` : ''}\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">${win.title || localization.text.title}</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"${images.clientPath + images.colorMap.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"${images.clientPath + images.colorBar.arrow.file}\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">${localization.text.newColor}<div><span class=\"Active\" title=\"${localization.tooltips.colors.newColor}\">&nbsp;</span><span class=\"Current\" title=\"${localization.tooltips.colors.currentColor}\">&nbsp;</span></div>${localization.text.currentColor}</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"${localization.text.ok}\" title=\"${localization.tooltips.buttons.ok}\"/><input type=\"button\" class=\"Cancel\" value=\"${localization.text.cancel}\" title=\"${localization.tooltips.buttons.cancel}\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.hue.radio}\"><input type=\"radio\" value=\"h\"${settings.color.mode === 'h' ? ' checked=\"checked\"' : ''}/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.h : ''}\" title=\"${localization.tooltips.hue.textbox}\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.saturation.radio}\"><input type=\"radio\" value=\"s\"${settings.color.mode === 's' ? ' checked=\"checked\"' : ''}/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.s : ''}\" title=\"${localization.tooltips.saturation.textbox}\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.value.radio}\"><input type=\"radio\" value=\"v\"${settings.color.mode === 'v' ? ' checked=\"checked\"' : ''}/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.v : ''}\" title=\"${localization.tooltips.value.textbox}\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.red.radio}\"><input type=\"radio\" value=\"r\"${settings.color.mode === 'r' ? ' checked=\"checked\"' : ''}/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.r : ''}\" title=\"${localization.tooltips.red.textbox}\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.green.radio}\"><input type=\"radio\" value=\"g\"${settings.color.mode === 'g' ? ' checked=\"checked\"' : ''}/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.g : ''}\" title=\"${localization.tooltips.green.textbox}\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"${localization.tooltips.blue.radio}\"><input type=\"radio\" value=\"b\"${settings.color.mode === 'b' ? ' checked=\"checked\"' : ''}/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"${!isNullish(all) ? all.b : ''}\" title=\"${localization.tooltips.blue.textbox}\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">${win.alphaSupport ? `<label title=\"${localization.tooltips.alpha.radio}\"><input type=\"radio\" value=\"a\"${settings.color.mode === 'a' ? ' checked=\"checked\"' : ''}/>A:</label>` : '&nbsp;'}</td>\n              <td class=\"Text\">${win.alphaSupport ? `<input type=\"text\" maxlength=\"${3 + win.alphaPrecision}\" value=\"${!isNullish(all) ? toFixedNumeric((all.a * 100) / 255, win.alphaPrecision) : ''}\" title=\"${localization.tooltips.alpha.textbox}\"/>&nbsp;%` : '&nbsp;'}</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"${localization.tooltips.hex.textbox}\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"${!isNullish(all) ? all.hex : ''}\"/></label>${win.alphaSupport ? `<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"${!isNullish(all) ? all.ahex.substring(6) : ''}\" title=\"${localization.tooltips.hex.alpha}\"/></td>` : '&nbsp;'}\n            </tr>\n          </tbody></table>`;\n        if (win.expandable) {\n          container.html(controlHtml);\n          if (!$(document.body).children('div.jPicker.Container').length) {\n            $(document.body).prepend(container);\n          } else {\n            $(document.body).children('div.jPicker.Container:last').after(container);\n          }\n          container.mousedown(\n            function () {\n              $(document.body).children('div.jPicker.Container').css({zIndex: 10});\n              container.css({zIndex: 20});\n            }\n          );\n          container.css( // positions must be set and display set to absolute before source code injection or IE will size the container to fit the window\n            {\n              left:\n                win.position.x === 'left'\n                  ? (popup.offset().left - 530 - (win.position.y === 'center' ? 25 : 0)) + 'px'\n                  : win.position.x === 'center'\n                    ? (popup.offset().left - 260) + 'px'\n                    : win.position.x === 'right'\n                      ? (popup.offset().left - 10 + (win.position.y === 'center' ? 25 : 0)) + 'px'\n                      : win.position.x === 'screenCenter'\n                        ? (($(document).width() >> 1) - 260) + 'px'\n                        : (popup.offset().left + parseInt(win.position.x)) + 'px',\n              position: 'absolute',\n              top: win.position.y === 'top'\n                ? (popup.offset().top - 312) + 'px'\n                : win.position.y === 'center'\n                  ? (popup.offset().top - 156) + 'px'\n                  : win.position.y === 'bottom'\n                    ? (popup.offset().top + 25) + 'px'\n                    : (popup.offset().top + parseInt(win.position.y)) + 'px'\n            }\n          );\n        } else {\n          container = $(that);\n          container.html(controlHtml);\n        }\n        // initialize the objects to the source code just injected\n        const tbody = container.find('tbody:first');\n        colorMapDiv = tbody.find('div.Map:first');\n        colorBarDiv = tbody.find('div.Bar:first');\n        const MapMaps = colorMapDiv.find('span');\n        const BarMaps = colorBarDiv.find('span');\n        colorMapL1 = MapMaps.filter('.Map1:first');\n        colorMapL2 = MapMaps.filter('.Map2:first');\n        colorMapL3 = MapMaps.filter('.Map3:first');\n        colorBarL1 = BarMaps.filter('.Map1:first');\n        colorBarL2 = BarMaps.filter('.Map2:first');\n        colorBarL3 = BarMaps.filter('.Map3:first');\n        colorBarL4 = BarMaps.filter('.Map4:first');\n        colorBarL5 = BarMaps.filter('.Map5:first');\n        colorBarL6 = BarMaps.filter('.Map6:first');\n        // create color pickers and maps\n        colorMap = new Slider(\n          colorMapDiv,\n          {\n            map: {\n              width: images.colorMap.width,\n              height: images.colorMap.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorMap.arrow.file,\n              width: images.colorMap.arrow.width,\n              height: images.colorMap.arrow.height\n            }\n          }\n        );\n        colorMap.bind(mapValueChanged);\n        colorBar = new Slider(\n          colorBarDiv,\n          {\n            map: {\n              width: images.colorBar.width,\n              height: images.colorBar.height\n            },\n            arrow: {\n              image: images.clientPath + images.colorBar.arrow.file,\n              width: images.colorBar.arrow.width,\n              height: images.colorBar.arrow.height\n            }\n          }\n        );\n        colorBar.bind(colorBarValueChanged);\n        colorPicker = new ColorValuePicker(\n          tbody,\n          color.active,\n          win.expandable && win.bindToInput ? win.input : null,\n          win.alphaPrecision\n        );\n        const hex = !isNullish(all) ? all.hex : null,\n          preview = tbody.find('.Preview'),\n          button = tbody.find('.Button');\n        activePreview = preview.find('.Active:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n        currentPreview = preview.find('.Current:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'}).bind('click', currentClicked);\n        setAlpha.call(that, currentPreview, toFixedNumeric((color.current.val('a') * 100) / 255, 4));\n        okButton = button.find('.Ok:first').bind('click', okClicked);\n        cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);\n        grid = button.find('.Grid:first');\n        setTimeout(function () {\n          setImg.call(that, colorMapL1, images.clientPath + 'Maps.png');\n          setImg.call(that, colorMapL2, images.clientPath + 'Maps.png');\n          setImg.call(that, colorMapL3, images.clientPath + 'map-opacity.png');\n          setImg.call(that, colorBarL1, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL2, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL3, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL4, images.clientPath + 'Bars.png');\n          setImg.call(that, colorBarL5, images.clientPath + 'bar-opacity.png');\n          setImg.call(that, colorBarL6, images.clientPath + 'AlphaBar.png');\n          setImg.call(that, preview.find('div:first'), images.clientPath + 'preview-opacity.png');\n        }, 0);\n        tbody.find('td.Radio input').bind('click', radioClicked);\n        // initialize quick list\n        if (color.quickList && color.quickList.length > 0) {\n          let html = '';\n          for (let i = 0; i < color.quickList.length; i++) {\n            /* if default colors are hex strings, change them to color objects */\n            if ((typeof (color.quickList[i])).toString().toLowerCase() === 'string') color.quickList[i] = new Color({hex: color.quickList[i]});\n            const alpha = color.quickList[i].val('a');\n            let ahex = color.quickList[i].val('ahex');\n            if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';\n            const quickHex = color.quickList[i].val('hex');\n            if (!ahex) ahex = '00000000';\n            html += '<span class=\"QuickColor\"' + (' title=\"#' + ahex + '\"') + ' style=\"background-color:' + ((quickHex && '#' + quickHex) || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '\">&nbsp;</span>';\n          }\n          setImg.call(that, grid, images.clientPath + 'bar-opacity.png');\n          grid.html(html);\n          grid.find('.QuickColor').click(quickPickClicked);\n        }\n        setColorMode.call(that, settings.color.mode);\n        color.active.bind(activeColorChanged);\n        typeof liveCallback === 'function' && color.active.bind(liveCallback);\n        color.current.bind(currentColorChanged);\n        // bind to input\n        if (win.expandable) {\n          that.icon = popup.parents('.Icon:first');\n          iconColor = that.icon.find('.Color:first').css({backgroundColor: (hex && '#' + hex) || 'transparent'});\n          iconAlpha = that.icon.find('.Alpha:first');\n          setImg.call(that, iconAlpha, images.clientPath + 'bar-opacity.png');\n          setAlpha.call(that, iconAlpha, toFixedNumeric(((255 - (!isNullish(all) ? all.a : 0)) * 100) / 255, 4));\n          iconImage = that.icon.find('.Image:first').css({\n            backgroundImage: 'url(\\'' + images.clientPath + images.picker.file + '\\')'\n          }).bind('click', iconImageClicked);\n          if (win.bindToInput && win.updateInputColor) {\n            win.input.css({\n              backgroundColor: (hex && '#' + hex) || 'transparent',\n              color: isNullish(all) || all.v > 75 ? '#000000' : '#ffffff'\n            });\n          }\n          moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);\n          color.active.bind(expandableColorChanged);\n        } else show.call(that);\n      }\n      /**\n      *\n      * @returns {undefined}\n      */\n      function destroy () {\n        container.find('td.Radio input').unbind('click', radioClicked);\n        currentPreview.unbind('click', currentClicked);\n        cancelButton.unbind('click', cancelClicked);\n        okButton.unbind('click', okClicked);\n        if (settings.window.expandable) {\n          iconImage.unbind('click', iconImageClicked);\n          moveBar.unbind('mousedown', moveBarMouseDown);\n          that.icon = null;\n        }\n        container.find('.QuickColor').unbind('click', quickPickClicked);\n        colorMapDiv = null;\n        colorBarDiv = null;\n        colorMapL1 = null;\n        colorMapL2 = null;\n        colorMapL3 = null;\n        colorBarL1 = null;\n        colorBarL2 = null;\n        colorBarL3 = null;\n        colorBarL4 = null;\n        colorBarL5 = null;\n        colorBarL6 = null;\n        colorMap.destroy();\n        colorMap = null;\n        colorBar.destroy();\n        colorBar = null;\n        colorPicker.destroy();\n        colorPicker = null;\n        activePreview = null;\n        currentPreview = null;\n        okButton = null;\n        cancelButton = null;\n        grid = null;\n        commitCallback = null;\n        cancelCallback = null;\n        liveCallback = null;\n        container.html('');\n        for (let i = 0; i < List.length; i++) {\n          if (List[i] === that) {\n            List.splice(i, 1);\n          }\n        }\n      }\n      const {images, localization} = settings; // local copies for YUI compressor\n      const color = {\n        active: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active\n          })\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        current: (typeof settings.color.active).toString().toLowerCase() === 'string'\n          ? new Color({ahex: !settings.window.alphaSupport && settings.color.active\n            ? settings.color.active.substring(0, 6) + 'ff'\n            : settings.color.active})\n          : new Color({ahex: !settings.window.alphaSupport &&\n              settings.color.active.val('ahex')\n            ? settings.color.active.val('ahex').substring(0, 6) + 'ff'\n            : settings.color.active.val('ahex')\n          }),\n        quickList: settings.color.quickList\n      };\n\n      if (typeof commitCallback !== 'function') {\n        commitCallback = null;\n      }\n      if (typeof liveCallback !== 'function') {\n        liveCallback = null;\n      }\n      if (typeof cancelCallback !== 'function') {\n        cancelCallback = null;\n      }\n\n      let elementStartX = null, // Used to record the starting css positions for dragging the control\n        elementStartY = null,\n        pageStartX = null, // Used to record the mousedown coordinates for dragging the control\n        pageStartY = null,\n        container = null,\n        colorMapDiv = null,\n        colorBarDiv = null,\n        colorMapL1 = null, // different layers of colorMap and colorBar\n        colorMapL2 = null,\n        colorMapL3 = null,\n        colorBarL1 = null,\n        colorBarL2 = null,\n        colorBarL3 = null,\n        colorBarL4 = null,\n        colorBarL5 = null,\n        colorBarL6 = null,\n        colorMap = null, // color maps\n        colorBar = null,\n        colorPicker = null,\n        activePreview = null, // color boxes above the radio buttons\n        currentPreview = null,\n        okButton = null,\n        cancelButton = null,\n        grid = null, // preset colors grid\n        iconColor = null, // iconColor for popup icon\n        iconAlpha = null, // iconAlpha for popup icon\n        iconImage = null, // iconImage popup icon\n        moveBar = null; // drag bar\n\n      $.extend(true, that, {\n        // public properties, methods, and callbacks\n        commitCallback, // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks \"OK\"\n        liveCallback, // liveCallback function can be overridden to return the selected color to a method you specify in live mode (continuous update)\n        cancelCallback, // cancelCallback function can be overridden to a method you specify when the user clicks \"Cancel\"\n        color,\n        show,\n        hide,\n        destroy // destroys this control entirely, removing all events and objects, and removing itself from the List\n      });\n      List.push(that);\n      setTimeout(function () {\n        initialize.call(that);\n      }, 0);\n    });\n  };\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsIconInfo\n  * @property {string} file Color Map/Color Bar/Color Picker arrow icon\n  * @property {Float} width\n  * @property {Float} height\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsImagesDimensionsArrow\n  * @property {Float} width\n  * @property {Float} height\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} arrow\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptionsRadioTextboxLocale\n  * @property {string} radio\n  * @property {string} textbox\n  */\n  /**\n  * @typedef {PlainObject} external:jQuery.fn.jPickerOptions\n  * @property {PlainObject} window\n  * @property {string|null} window.title Any title for the jPicker window itself - displays\n  * \"Drag Markers To Pick A Color\" if left null\n  * @property {PlainObject} window.effects\n  * @property {\"slide\"|\"show\"|\"fade\"} window.effects.type Effect used to show/hide an expandable picker\n  * @property {PlainObject} window.effects.speed\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.show Duration of \"show\" effect. Time in milliseconds.\n  * @property {\"fast\"|\"slow\"|Float} window.effects.speed.hide Duration of \"hide\" effect. Time in milliseconds\n  * @property {PlainObject} window.position\n  * @property {\"left\"|\"center\"|\"right\"|\"screenCenter\"|Float} window.position.x Relative px value\n  * @property {\"top\"|\"bottom\"|\"center\"|Float} window.position.y Relative px value\n  * @property {boolean} window.expandable Defaults to large static picker - set to `true` to make an expandable\n  * picker (small icon with popup) - set automatically when binded to input element\n  * @property {boolean} window.liveUpdate Set `false` if you want the user to have to click \"OK\" before the\n  * binded input box updates values (always `true` for expandable picker)\n  * @property {boolean} window.alphaSupport Set to `true` to enable alpha picking\n  * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do\n  * not map directly to percentage integers - range 0-2\n  * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing\n  * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`\n  * @property {boolean} [window.expandable] Added by `$.fn.jPicker`\n  * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`\n  * @property {PlainObject} color\n  * @property {\"h\"|\"s\"|\"v\"|\"r\"|\"g\"|\"b\"|\"a\"} color.mode Symbols stand for \"h\" (hue), \"s\" (saturation), \"v\" (value), \"r\" (red), \"g\" (green), \"b\" (blue), \"a\" (alpha)\n  * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {Color[]|string[]} color.quickList The quick pick color list\n  * Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the \"#\" prefix\n  * @property {PlainObject} images\n  * @property {string} images.clientPath Path to image files\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorMap\n  * @property {external:jQuery.fn.jPickerOptionsImagesDimensionsArrow} images.colorBar\n  * @property {external:jQuery.fn.jPickerOptionsIconInfo} images.picker\n  * @property {PlainObject} localization alter these to change the text presented by the picker (e.g. different language)\n  * @property {PlainObject} localization.text\n  * @property {string} localization.text.title\n  * @property {string} localization.text.newColor\n  * @property {string} localization.text.currentColor\n  * @property {string} localization.text.ok\n  * @property {string} localization.text.cancel\n  * @property {PlainObject} localization.tooltips\n  * @property {PlainObject} localization.tooltips.colors\n  * @property {string} localization.tooltips.colors.newColor\n  * @property {string} localization.tooltips.colors.currentColor\n  * @property {PlainObject} localization.tooltips.buttons\n  * @property {string} localization.tooltips.buttons.ok\n  * @property {string} localization.tooltips.buttons.cancel\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.hue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.saturation\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.value\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.red\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.green\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.blue\n  * @property {external:jQuery.fn.jPickerOptionsRadioTextboxLocale} localization.tooltips.alpha\n  * @property {PlainObject} localization.tooltips.hex\n  * @property {string} localization.tooltips.hex.textbox\n  * @property {string} localization.tooltips.hex.alpha\n  */\n  /**\n  * jPicker defaults - you can change anything in this section (such as the\n  * clientPath to your images) without fear of breaking the program\n  * @namespace {external:jQuery.fn.jPickerOptions} defaults\n  * @memberof external:jQuery.fn.$.fn.jPicker\n  * @borrows external:jQuery.fn.jPickerOptions as external:jQuery.fn.jPicker.defaults\n  * @see Source for all of the values\n  */\n  $.fn.jPicker.defaults = {\n    window: {\n      title: null,\n      effects: {\n        type: 'slide',\n        speed: {\n          show: 'slow',\n          hide: 'fast'\n        }\n      },\n      position: {\n        x: 'screenCenter',\n        y: 'top'\n      },\n      expandable: false,\n      liveUpdate: true,\n      alphaSupport: false,\n      alphaPrecision: 0,\n      updateInputColor: true\n    },\n    color: {\n      mode: 'h',\n      active: new Color({ahex: '#ffcc00ff'}),\n      quickList: [\n        new Color({h: 360, s: 33, v: 100}),\n        new Color({h: 360, s: 66, v: 100}),\n        new Color({h: 360, s: 100, v: 100}),\n        new Color({h: 360, s: 100, v: 75}),\n        new Color({h: 360, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 100}),\n        new Color({h: 30, s: 33, v: 100}),\n        new Color({h: 30, s: 66, v: 100}),\n        new Color({h: 30, s: 100, v: 100}),\n        new Color({h: 30, s: 100, v: 75}),\n        new Color({h: 30, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 90}),\n        new Color({h: 60, s: 33, v: 100}),\n        new Color({h: 60, s: 66, v: 100}),\n        new Color({h: 60, s: 100, v: 100}),\n        new Color({h: 60, s: 100, v: 75}),\n        new Color({h: 60, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 80}),\n        new Color({h: 90, s: 33, v: 100}),\n        new Color({h: 90, s: 66, v: 100}),\n        new Color({h: 90, s: 100, v: 100}),\n        new Color({h: 90, s: 100, v: 75}),\n        new Color({h: 90, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 70}),\n        new Color({h: 120, s: 33, v: 100}),\n        new Color({h: 120, s: 66, v: 100}),\n        new Color({h: 120, s: 100, v: 100}),\n        new Color({h: 120, s: 100, v: 75}),\n        new Color({h: 120, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 60}),\n        new Color({h: 150, s: 33, v: 100}),\n        new Color({h: 150, s: 66, v: 100}),\n        new Color({h: 150, s: 100, v: 100}),\n        new Color({h: 150, s: 100, v: 75}),\n        new Color({h: 150, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 50}),\n        new Color({h: 180, s: 33, v: 100}),\n        new Color({h: 180, s: 66, v: 100}),\n        new Color({h: 180, s: 100, v: 100}),\n        new Color({h: 180, s: 100, v: 75}),\n        new Color({h: 180, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 40}),\n        new Color({h: 210, s: 33, v: 100}),\n        new Color({h: 210, s: 66, v: 100}),\n        new Color({h: 210, s: 100, v: 100}),\n        new Color({h: 210, s: 100, v: 75}),\n        new Color({h: 210, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 30}),\n        new Color({h: 240, s: 33, v: 100}),\n        new Color({h: 240, s: 66, v: 100}),\n        new Color({h: 240, s: 100, v: 100}),\n        new Color({h: 240, s: 100, v: 75}),\n        new Color({h: 240, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 20}),\n        new Color({h: 270, s: 33, v: 100}),\n        new Color({h: 270, s: 66, v: 100}),\n        new Color({h: 270, s: 100, v: 100}),\n        new Color({h: 270, s: 100, v: 75}),\n        new Color({h: 270, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 10}),\n        new Color({h: 300, s: 33, v: 100}),\n        new Color({h: 300, s: 66, v: 100}),\n        new Color({h: 300, s: 100, v: 100}),\n        new Color({h: 300, s: 100, v: 75}),\n        new Color({h: 300, s: 100, v: 50}),\n        new Color({h: 180, s: 0, v: 0}),\n        new Color({h: 330, s: 33, v: 100}),\n        new Color({h: 330, s: 66, v: 100}),\n        new Color({h: 330, s: 100, v: 100}),\n        new Color({h: 330, s: 100, v: 75}),\n        new Color({h: 330, s: 100, v: 50}),\n        new Color()\n      ]\n    },\n    images: {\n      clientPath: '/jPicker/images/',\n      colorMap: {\n        width: 256,\n        height: 256,\n        arrow: {\n          file: 'mappoint.gif',\n          width: 15,\n          height: 15\n        }\n      },\n      colorBar: {\n        width: 20,\n        height: 256,\n        arrow: {\n          file: 'rangearrows.gif',\n          width: 20,\n          height: 7\n        }\n      },\n      picker: {\n        file: 'picker.gif',\n        width: 25,\n        height: 24\n      }\n    },\n    localization: {\n      text: {\n        title: 'Drag Markers To Pick A Color',\n        newColor: 'new',\n        currentColor: 'current',\n        ok: 'OK',\n        cancel: 'Cancel'\n      },\n      tooltips: {\n        colors: {\n          newColor: 'New Color - Press &ldquo;OK&rdquo; To Commit',\n          currentColor: 'Click To Revert To Original Color'\n        },\n        buttons: {\n          ok: 'Commit To This Color Selection',\n          cancel: 'Cancel And Revert To Original Color'\n        },\n        hue: {\n          radio: 'Set To &ldquo;Hue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Hue&rdquo; Value (0-360&deg;)'\n        },\n        saturation: {\n          radio: 'Set To &ldquo;Saturation&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Saturation&rdquo; Value (0-100%)'\n        },\n        value: {\n          radio: 'Set To &ldquo;Value&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Value&rdquo; Value (0-100%)'\n        },\n        red: {\n          radio: 'Set To &ldquo;Red&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Red&rdquo; Value (0-255)'\n        },\n        green: {\n          radio: 'Set To &ldquo;Green&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Green&rdquo; Value (0-255)'\n        },\n        blue: {\n          radio: 'Set To &ldquo;Blue&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Blue&rdquo; Value (0-255)'\n        },\n        alpha: {\n          radio: 'Set To &ldquo;Alpha&rdquo; Color Mode',\n          textbox: 'Enter A &ldquo;Alpha&rdquo; Value (0-100)'\n        },\n        hex: {\n          textbox: 'Enter A &ldquo;Hex&rdquo; Color Value (#000000-#ffffff)',\n          alpha: 'Enter A &ldquo;Alpha&rdquo; Value (#00-#ff)'\n        }\n      }\n    }\n  };\n  return $;\n};\n\nexport default jPicker;\n","/* globals jQuery */\n/**\n * Localizing script for SVG-edit UI\n * @module locale\n * @license MIT\n *\n * @copyright 2010 Narendra Sisodya\n * @copyright 2010 Alexis Deveria\n *\n */\n\n/**\n * Used, for example, in the ImageLibs extension, to present libraries (with name/URL/description) in order\n * @typedef {GenericArray.<module:locale.LocaleStrings>} module:locale.LocaleArray\n*/\n/**\n * The string keys of the object are two-letter language codes\n * @tutorial LocaleDocs\n * @typedef {PlainObject.<string, string|module:locale.LocaleStrings|module:locale.LocaleArray>} module:locale.LocaleStrings\n */\n// keyed to an array of objects with \"id\" and \"title\" or \"textContent\" properties\n/**\n * @typedef {PlainObject.<string, string>} module:locale.LocaleSelectorValue\n */\n\nimport {importSetGlobalDefault} from '../external/dynamic-import-polyfill/importModule.js';\n\nconst $ = jQuery;\n\nlet langParam;\n\n/**\n* @param {\"content\"|\"title\"} type\n* @param {module:locale.LocaleSelectorValue} obj\n* @param {boolean} ids\n* @returns {undefined}\n*/\nexport const setStrings = function (type, obj, ids) {\n  // Root element to look for element from\n  const parent = $('#svg_editor').parent();\n  Object.entries(obj).forEach(([sel, val]) => {\n    if (!val) {\n      console.log(sel); // eslint-disable-line no-console\n    }\n\n    if (ids) { sel = '#' + sel; }\n    const $elem = parent.find(sel);\n    if ($elem.length) {\n      const elem = parent.find(sel)[0];\n\n      switch (type) {\n      case 'content':\n        [...elem.childNodes].some((node) => {\n          if (node.nodeType === 3 && node.textContent.trim()) {\n            node.textContent = val;\n            return true;\n          }\n          return false;\n        });\n        break;\n\n      case 'title':\n        elem.title = val;\n        break;\n      }\n    } else {\n      console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console\n    }\n  });\n};\n\n/**\n* The \"data\" property is generally set to an an array of objects with\n* \"id\" and \"title\" or \"textContent\" properties\n* @typedef {PlainObject} module:locale.AddLangExtensionLocaleData\n* @property {module:locale.LocaleStrings[]} data See {@tutorial LocaleDocs}\n*/\n\n/**\n* @interface module:locale.LocaleEditorInit\n*/\n/**\n * @function module:locale.LocaleEditorInit#addLangData\n * @param {string} langParam\n * @returns {module:locale.AddLangExtensionLocaleData}\n*/\n\nlet editor_;\n/**\n* @function init\n* @memberof module:locale\n* @param {module:locale.LocaleEditorInit} editor\n* @returns {undefined}\n*/\nexport const init = (editor) => {\n  editor_ = editor;\n};\n\n/**\n* @typedef {PlainObject} module:locale.LangAndData\n* @property {string} langParam\n* @property {module:locale.LocaleStrings} langData\n*/\n\n/**\n* @function module:locale.readLang\n* @param {module:locale.LocaleStrings} langData See {@tutorial LocaleDocs}\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @returns {Promise} Resolves to [`LangAndData`]{@link module:locale.LangAndData}\n*/\nexport const readLang = async function (langData) {\n  const more = await editor_.addLangData(langParam);\n  $.each(more, function (i, m) {\n    if (m.data) {\n      langData = $.merge(langData, m.data);\n    }\n  });\n\n  // Old locale file, do nothing for now.\n  if (!langData.tools) { return undefined; }\n\n  const {\n    tools,\n    // misc,\n    properties, config, layers, common, ui\n  } = langData;\n\n  setStrings('content', {\n    // copyrightLabel: misc.powered_by, // Currently commented out in svg-editor.html\n    curve_segments: properties.curve_segments,\n    fitToContent: tools.fitToContent,\n    fit_to_all: tools.fit_to_all,\n    fit_to_canvas: tools.fit_to_canvas,\n    fit_to_layer_content: tools.fit_to_layer_content,\n    fit_to_sel: tools.fit_to_sel,\n\n    icon_large: config.icon_large,\n    icon_medium: config.icon_medium,\n    icon_small: config.icon_small,\n    icon_xlarge: config.icon_xlarge,\n    image_opt_embed: config.image_opt_embed,\n    image_opt_ref: config.image_opt_ref,\n    includedImages: config.included_images,\n\n    largest_object: tools.largest_object,\n\n    layersLabel: layers.layers,\n    page: tools.page,\n    relativeToLabel: tools.relativeTo,\n    selLayerLabel: layers.move_elems_to,\n    selectedPredefined: config.select_predefined,\n\n    selected_objects: tools.selected_objects,\n    smallest_object: tools.smallest_object,\n    straight_segments: properties.straight_segments,\n\n    svginfo_bg_url: config.editor_img_url + ':',\n    svginfo_bg_note: config.editor_bg_note,\n    svginfo_change_background: config.background,\n    svginfo_dim: config.doc_dims,\n    svginfo_editor_prefs: config.editor_prefs,\n    svginfo_height: common.height,\n    svginfo_icons: config.icon_size,\n    svginfo_image_props: config.image_props,\n    svginfo_lang: config.language,\n    svginfo_title: config.doc_title,\n    svginfo_width: common.width,\n\n    tool_docprops_cancel: common.cancel,\n    tool_docprops_save: common.ok,\n\n    tool_source_cancel: common.cancel,\n    tool_source_save: common.ok,\n\n    tool_prefs_cancel: common.cancel,\n    tool_prefs_save: common.ok,\n\n    sidepanel_handle: layers.layers.split('').join(' '),\n\n    tool_clear: tools.new_doc,\n    tool_docprops: tools.docprops,\n    tool_export: tools.export_img,\n    tool_import: tools.import_doc,\n    tool_open: tools.open_doc,\n    tool_save: tools.save_doc,\n\n    svginfo_units_rulers: config.units_and_rulers,\n    svginfo_rulers_onoff: config.show_rulers,\n    svginfo_unit: config.base_unit,\n\n    svginfo_grid_settings: config.grid,\n    svginfo_snap_onoff: config.snapping_onoff,\n    svginfo_snap_step: config.snapping_stepsize,\n    svginfo_grid_color: config.grid_color\n  }, true);\n\n  // Context menus\n  const opts = {};\n  $.each(['cut', 'copy', 'paste', 'paste_in_place', 'delete', 'group', 'ungroup', 'move_front', 'move_up', 'move_down', 'move_back'], function () {\n    opts['#cmenu_canvas a[href=\"#' + this + '\"]'] = tools[this];\n  });\n\n  $.each(['dupe', 'merge_down', 'merge_all'], function () {\n    opts['#cmenu_layers a[href=\"#' + this + '\"]'] = layers[this];\n  });\n\n  opts['#cmenu_layers a[href=\"#delete\"]'] = layers.del;\n\n  setStrings('content', opts);\n\n  setStrings('title', {\n    align_relative_to: tools.align_relative_to,\n    circle_cx: properties.circle_cx,\n    circle_cy: properties.circle_cy,\n    circle_r: properties.circle_r,\n    cornerRadiusLabel: properties.corner_radius,\n    ellipse_cx: properties.ellipse_cx,\n    ellipse_cy: properties.ellipse_cy,\n    ellipse_rx: properties.ellipse_rx,\n    ellipse_ry: properties.ellipse_ry,\n    fill_color: properties.fill_color,\n    font_family: properties.font_family,\n    idLabel: properties.id,\n    image_height: properties.image_height,\n    image_url: properties.image_url,\n    image_width: properties.image_width,\n    layer_delete: layers.del,\n    layer_down: layers.move_down,\n    layer_new: layers.new,\n    layer_rename: layers.rename,\n    layer_moreopts: common.more_opts,\n    layer_up: layers.move_up,\n    line_x1: properties.line_x1,\n    line_x2: properties.line_x2,\n    line_y1: properties.line_y1,\n    line_y2: properties.line_y2,\n    linecap_butt: properties.linecap_butt,\n    linecap_round: properties.linecap_round,\n    linecap_square: properties.linecap_square,\n    linejoin_bevel: properties.linejoin_bevel,\n    linejoin_miter: properties.linejoin_miter,\n    linejoin_round: properties.linejoin_round,\n    main_icon: tools.main_menu,\n    palette: ui.palette_info,\n    zoom_panel: ui.zoom_level,\n    path_node_x: properties.node_x,\n    path_node_y: properties.node_y,\n    rect_height_tool: properties.rect_height,\n    rect_width_tool: properties.rect_width,\n    seg_type: properties.seg_type,\n    selLayerNames: layers.move_selected,\n    selected_x: properties.pos_x,\n    selected_y: properties.pos_y,\n    stroke_color: properties.stroke_color,\n    stroke_style: properties.stroke_style,\n    stroke_width: properties.stroke_width,\n    svginfo_title: config.doc_title,\n    text: properties.text_contents,\n    toggle_stroke_tools: ui.toggle_stroke_tools,\n    tool_add_subpath: tools.add_subpath,\n    tool_alignbottom: tools.align_bottom,\n    tool_aligncenter: tools.align_center,\n    tool_alignleft: tools.align_left,\n    tool_alignmiddle: tools.align_middle,\n    tool_alignright: tools.align_right,\n    tool_aligntop: tools.align_top,\n    tool_angle: properties.angle,\n    tool_blur: properties.blur,\n    tool_bold: properties.bold,\n    tool_circle: tools.mode_circle,\n    tool_clone: tools.clone,\n    tool_clone_multi: tools.clone,\n    tool_delete: tools.del,\n    tool_delete_multi: tools.del,\n    tool_ellipse: tools.mode_ellipse,\n    tool_fhellipse: tools.mode_fhellipse,\n    tool_fhpath: tools.mode_fhpath,\n    tool_fhrect: tools.mode_fhrect,\n    tool_font_size: properties.font_size,\n    tool_group_elements: tools.group_elements,\n    tool_make_link: tools.make_link,\n    tool_link_url: tools.set_link_url,\n    tool_image: tools.mode_image,\n    tool_italic: properties.italic,\n    tool_line: tools.mode_line,\n    tool_move_bottom: tools.move_bottom,\n    tool_move_top: tools.move_top,\n    tool_node_clone: tools.node_clone,\n    tool_node_delete: tools.node_delete,\n    tool_node_link: tools.node_link,\n    tool_opacity: properties.opacity,\n    tool_openclose_path: tools.openclose_path,\n    tool_path: tools.mode_path,\n    tool_position: tools.align_to_page,\n    tool_rect: tools.mode_rect,\n    tool_redo: tools.redo,\n    tool_reorient: tools.reorient_path,\n    tool_select: tools.mode_select,\n    tool_source: tools.source_save,\n    tool_square: tools.mode_square,\n    tool_text: tools.mode_text,\n    tool_topath: tools.to_path,\n    tool_undo: tools.undo,\n    tool_ungroup: tools.ungroup,\n    tool_wireframe: tools.wireframe_mode,\n    tool_zoom: tools.mode_zoom,\n    url_notice: tools.no_embed\n\n  }, true);\n\n  return {langParam, langData};\n};\n\n/**\n* @function module:locale.putLocale\n* @param {string} givenParam\n* @param {string[]} goodLangs\n* @param {{langPath: string}} conf\n* @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n* @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n* @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n* @returns {Promise} Resolves to result of {@link module:locale.readLang}\n*/\nexport const putLocale = async function (givenParam, goodLangs, conf) {\n  if (givenParam) {\n    langParam = givenParam;\n  } else {\n    langParam = $.pref('lang');\n    if (!langParam) {\n      if (navigator.userLanguage) { // Explorer\n        langParam = navigator.userLanguage;\n      } else if (navigator.language) { // FF, Opera, ...\n        langParam = navigator.language;\n      }\n    }\n\n    console.log('Lang: ' + langParam); // eslint-disable-line no-console\n\n    // Set to English if language is not in list of good langs\n    if (!goodLangs.includes(langParam) && langParam !== 'test') {\n      langParam = 'en';\n    }\n\n    // don't bother on first run if language is English\n    // The following line prevents setLang from running\n    //    extensions which depend on updated uiStrings,\n    //    so commenting it out.\n    // if (langParam.startsWith('en')) {return;}\n  }\n\n  const url = conf.langPath + 'lang.' + langParam + '.js';\n  return readLang(\n    // Todo: Replace this with `return import(url);` when\n    //   `import()` widely supported\n    await importSetGlobalDefault(url, {\n      global: 'svgEditorLang_' + langParam.replace(/-/g, '_')\n    })\n  );\n};\n","function loadStylesheets(stylesheets, {\n    before: beforeDefault, after: afterDefault, favicon: faviconDefault,\n    canvas: canvasDefault, image: imageDefault = true,\n    acceptErrors\n} = {}) {\n    stylesheets = Array.isArray(stylesheets) ? stylesheets : [stylesheets];\n\n    function setupLink(stylesheetURL) {\n        let options = {};\n        if (Array.isArray(stylesheetURL)) {\n            [stylesheetURL, options = {}] = stylesheetURL;\n        }\n        let { favicon = faviconDefault } = options;\n        const {\n            before = beforeDefault,\n            after = afterDefault,\n            canvas = canvasDefault,\n            image = imageDefault\n        } = options;\n        function addLink() {\n            if (before) {\n                before.before(link);\n            } else if (after) {\n                after.after(link);\n            } else {\n                document.head.appendChild(link);\n            }\n        }\n\n        const link = document.createElement('link');\n        return new Promise((resolve, reject) => {\n            let rej = reject;\n            if (acceptErrors) {\n                rej = typeof acceptErrors === 'function' ? error => {\n                    acceptErrors({ error, stylesheetURL, options, resolve, reject });\n                } : resolve;\n            }\n            if (stylesheetURL.endsWith('.css')) {\n                favicon = false;\n            } else if (stylesheetURL.endsWith('.ico')) {\n                favicon = true;\n            }\n            if (favicon) {\n                link.rel = 'shortcut icon';\n                link.type = 'image/x-icon';\n\n                if (image === false) {\n                    link.href = stylesheetURL;\n                    addLink();\n                    resolve(link);\n                    return;\n                }\n\n                const cnv = document.createElement('canvas');\n                cnv.width = 16;\n                cnv.height = 16;\n                const context = cnv.getContext('2d');\n                const img = document.createElement('img');\n                img.addEventListener('error', error => {\n                    reject(error);\n                });\n                img.addEventListener('load', () => {\n                    context.drawImage(img, 0, 0);\n                    link.href = canvas ? cnv.toDataURL('image/x-icon') : stylesheetURL;\n                    addLink();\n                    resolve(link);\n                });\n                img.src = stylesheetURL;\n                return;\n            }\n            link.rel = 'stylesheet';\n            link.type = 'text/css';\n            link.href = stylesheetURL;\n            addLink();\n            link.addEventListener('error', error => {\n                rej(error);\n            });\n            link.addEventListener('load', () => {\n                resolve(link);\n            });\n        });\n    }\n\n    return Promise.all(stylesheets.map(setupLink));\n}\n\nexport default loadStylesheets;\n","/* globals jQuery */\n\nimport './touch.js';\nimport {NS} from './namespaces.js';\nimport {isWebkit, isChrome, isGecko, isIE, isMac, isTouch} from './browser.js';\nimport * as Utils from './utilities.js';\nimport {getTypeMap, convertUnit, isValidUnit} from './units.js';\nimport {\n  hasCustomHandler, getCustomHandler, injectExtendedContextMenuItemsIntoDom\n} from './contextmenu.js';\nimport {importSetGlobalDefault} from './external/dynamic-import-polyfill/importModule.js';\n\nimport SvgCanvas from './svgcanvas.js';\nimport Layer from './layer.js';\n\nimport jQueryPluginJSHotkeys from './js-hotkeys/jquery.hotkeys.min.js';\nimport jQueryPluginBBQ from './jquerybbq/jquery.bbq.min.js';\nimport jQueryPluginSVGIcons from './svgicons/jQuery.svgIcons.js';\nimport jQueryPluginJGraduate from './jgraduate/jQuery.jGraduate.js';\nimport jQueryPluginSpinButton from './spinbtn/jQuery.SpinButton.js';\nimport jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`\nimport jQueryPluginContextMenu from './contextmenu/jQuery.contextMenu.js';\nimport jQueryPluginJPicker from './jgraduate/jQuery.jPicker.js';\nimport jQueryPluginDBox from './dbox.js';\n\nimport {\n  readLang, putLocale,\n  setStrings,\n  init as localeInit\n} from './locale/locale.js';\nimport loadStylesheets from './external/load-stylesheets/index-es.js';\n\n/**\n* The main module for the visual SVG Editor\n*\n* @license MIT\n*\n* @copyright 2010 Alexis Deveria\n* 2010 Pavol Rusnak\n* 2010 Jeff Schiller\n* 2010 Narendra Sisodiya\n* 2014 Brett Zamir\n* @exports module:SVGEditor\n* @borrows module:locale.putLocale as putLocale\n* @borrows module:locale.readLang as readLang\n* @borrows module:locale.setStrings as setStrings\n*/\nconst editor = {};\n\nconst $ = [\n  jQueryPluginJSHotkeys, jQueryPluginBBQ, jQueryPluginSVGIcons, jQueryPluginJGraduate,\n  jQueryPluginSpinButton, jQueryPluginSVG, jQueryPluginContextMenu, jQueryPluginJPicker\n].reduce((jq, func) => func(jq), jQuery);\n\n/*\nif (!$.loadingStylesheets) {\n  $.loadingStylesheets = [];\n}\n*/\nconst stylesheet = 'svg-editor.css';\nif (!$.loadingStylesheets.includes(stylesheet)) {\n  $.loadingStylesheets.push(stylesheet);\n}\nconst favicon = 'images/logo.png';\nif ($.loadingStylesheets.some((item) => {\n  return !Array.isArray(item) || item[0] !== favicon;\n})) {\n  $.loadingStylesheets.push([favicon, {favicon: true}]);\n}\n\n// EDITOR PROPERTIES: (defined below)\n//    curPrefs, curConfig, canvas, storage, uiStrings\n//\n// STATE MAINTENANCE PROPERTIES\n/**\n* @type {Float}\n*/\neditor.tool_scale = 1; // Dependent on icon size, so any use to making configurable instead? Used by `jQuery.SpinButton.js`\n/**\n* @type {Integer}\n*/\neditor.exportWindowCt = 0;\n/**\n* @type {boolean}\n*/\neditor.langChanged = false;\n/**\n* @type {boolean}\n*/\neditor.showSaveWarning = false;\n/**\n * Will be set to a boolean by `ext-storage.js`\n * @type {\"ignore\"|\"waiting\"|\"closed\"}\n*/\neditor.storagePromptState = 'ignore';\n\nconst callbacks = [],\n  /**\n  * @typedef {\"s\"|\"m\"|\"l\"|\"xl\"|Float} module:SVGEditor.IconSize\n  */\n  /**\n  * Preferences\n  * @interface module:SVGEditor.Prefs\n  * @property {string} [lang=\"en\"] Two-letter language code. The language must exist in the Editor Preferences language list. Defaults to \"en\" if `locale.js` detection does not detect another language.\n  * @property {module:SVGEditor.IconSize} [iconsize=\"s\"|\"m\"] Size of the toolbar icons. Will default to 's' if the window height is smaller than the minimum height and 'm' otherwise.\n  * @property {string} [bkgd_color=\"#FFF\"] Color hex for canvas background color. Defaults to white.\n  * @property {string} [bkgd_url=\"\"] Background raster image URL. This image will fill the background of the document; useful for tracing purposes.\n  * @property {\"embed\"|\"ref\"} [img_save=\"embed\"] Defines whether included raster images should be saved as Data URIs when possible, or as URL references. Settable in the Document Properties dialog.\n  * @property {boolean} [save_notice_done=false] Used to track alert status\n  * @property {boolean} [export_notice_done=false] Used to track alert status\n  * @todo `save_notice_done` and `export_notice_done` should be changed to flags rather than preferences\n  */\n  /**\n  * @namespace {module:SVGEditor.Prefs} defaultPrefs\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Prefs}\n  */\n  // The iteration algorithm for defaultPrefs does not currently support array/objects\n  defaultPrefs = /** @lends module:SVGEditor~defaultPrefs */ {\n    // EDITOR OPTIONS (DIALOG)\n    /**\n    * Default to \"en\" if locale.js detection does not detect another language\n    */\n    lang: '',\n    /**\n    * Will default to 's' if the window height is smaller than the minimum height and\n    * 'm' otherwise\n    */\n    iconsize: '',\n    bkgd_color: '#FFF',\n    bkgd_url: '',\n    // DOCUMENT PROPERTIES (DIALOG)\n    img_save: 'embed',\n    // ALERT NOTICES\n    // Only shows in UI as far as alert notices, but useful to remember, so keeping as pref\n    save_notice_done: false,\n    export_notice_done: false\n  },\n  /**\n  * @name module:SVGEditor~defaultExtensions\n  * @type {string[]}\n  */\n  defaultExtensions = [\n    'ext-connector.js',\n    'ext-eyedropper.js',\n    'ext-grid.js',\n    'ext-imagelib.js',\n    'ext-markers.js',\n    'ext-overview_window.js',\n    'ext-panning.js',\n    'ext-polygon.js',\n    'ext-shapes.js',\n    'ext-star.js',\n    'ext-storage.js'\n  ],\n  /**\n  * @typedef {\"@default\"|string} module:SVGEditor.Stylesheet `@default` will automatically load all of the default CSS paths for SVGEditor\n  */\n  /**\n  * @typedef {GenericArray} module:SVGEditor.XYDimensions\n  * @property {Integer} length 2\n  * @property {Float} 0\n  * @property {Float} 1\n  */\n  /**\n  * @tutorial ConfigOptions\n  * @interface module:SVGEditor.Config\n  * @property {string} [canvasName=\"default\"] Used to namespace storage provided via `ext-storage.js`; you can use this if you wish to have multiple independent instances of SVG Edit on the same domain\n  * @property {boolean} [no_save_warning=false] If `true`, prevents the warning dialog box from appearing when closing/reloading the page. Mostly useful for testing.\n  * @property {string} [imgPath=\"images/\"] The path where the SVG icons are located, with trailing slash. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [langPath=\"locale/\"] The path where the language files are located, with trailing slash. Default will be changed to `../dist/locale/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [extPath=\"extensions/\"] The path used for extension files, with trailing slash. Default will be changed to `../dist/extensions/` if this is a modular load. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {string} [canvgPath=\"canvg/\"] The path used for `canvg` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [jspdfPath=\"jspdf/\"] The path used for `jsPDF` files, with trailing slash. Default will be changed to `../dist/` if this is a modular load.\n  * @property {string} [extIconsPath=\"extensions/\"] The path used for extension icons, with trailing slash.\n  * @property {string} [jGraduatePath=\"jgraduate/images/\"] The path where jGraduate images are located. Note that as of version 2.7, this is not configurable by URL for security reasons.\n  * @property {boolean} [preventAllURLConfig=false] Set to `true` to override the ability for URLs to set non-content configuration (including extension config). Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [preventURLContentLoading=false] Set to `true` to override the ability for URLs to set URL-based SVG content. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [lockExtensions=false] Set to `true` to override the ability for URLs to set their own extensions; disallowed in URL setting. There is no need for this when `preventAllURLConfig` is used. Must be set early, i.e., in `svgedit-config-iife.js`; extension loading is too late!\n  * @property {boolean} [noDefaultExtensions=false] If set to `true`, prohibits automatic inclusion of default extensions (though \"extensions\" can still be used to add back any desired default extensions along with any other extensions). This can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n  * @property {boolean} [noStorageOnLoad=false] Some interaction with `ext-storage.js`; prevent even the loading of previously saved local storage.\n  * @property {boolean} [forceStorage=false] Some interaction with `ext-storage.js`; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not (and may be required by law in some regions)\n  * @property {boolean} [emptyStorageOnDecline=false] Used by `ext-storage.js`; empty any prior storage if the user declines to store\n  * @property {string[]} [extensions=module:SVGEditor~defaultExtensions] Extensions to load on startup. Use an array in `setConfig` and comma separated file names in the URL. Extension names must begin with \"ext-\". Note that as of version 2.7, paths containing \"/\", \"\\\", or \":\", are disallowed for security reasons. Although previous versions of this list would entirely override the default list, as of version 2.7, the defaults will always be added to this explicit list unless the configuration `noDefaultExtensions` is included.\n  * @property {module:SVGEditor.Stylesheet[]} [stylesheets=[\"@default\"]] An array of required stylesheets to load in parallel; include the value `\"@default\"` within this array to ensure all default stylesheets are loaded.\n  * @property {string[]} [allowedOrigins=[]] Used by `ext-xdomain-messaging.js` to indicate which origins are permitted for cross-domain messaging (e.g., between the embedded editor and main editor code). Besides explicit domains, one might add '*' to allow all domains (not recommended for privacy/data integrity of your user's content!), `window.location.origin` for allowing the same origin (should be safe if you trust all apps on your domain), 'null' to allow `file:///` URL usage\n  * @property {null|PlainObject} [colorPickerCSS=null] Object of CSS properties mapped to values (for jQuery) to apply to the color picker. See {@link http://api.jquery.com/css/#css-properties}. A `null` value (the default) will cause the CSS to default to `left` with a position equal to that of the `fill_color` or `stroke_color` element minus 140, and a `bottom` equal to 40\n  * @property {string} [paramurl] This was available via URL only. Allowed an un-encoded URL within the query string (use \"url\" or \"source\" with a data: URI instead)\n  * @property {Float} [canvas_expansion=3] The minimum area visible outside the canvas, as a multiple of the image dimensions. The larger the number, the more one can scroll outside the canvas.\n  * @property {PlainObject} [initFill] Init fill properties\n  * @property {string} [initFill.color=\"FF0000\"] The initial fill color. Must be a hex code string. Defaults to solid red.\n  * @property {Float} [initFill.opacity=1] The initial fill opacity. Must be a number between 0 and 1\n  * @property {PlainObject} [initStroke] Init stroke properties\n  * @property {Float} [initStroke.width=5] The initial stroke width. Must be a positive number.\n  * @property {string} [initStroke.color=\"000000\"] The initial stroke color. Must be a hex code. Defaults to solid black.\n  * @property {Float} [initStroke.opacity=1] The initial stroke opacity. Must be a number between 0 and 1.\n  * @property {PlainObject} text Text style properties\n  * @property {Float} [text.stroke_width=0] Text stroke width\n  * @property {Float} [text.font_size=24] Text font size\n  * @property {string} [text.font_family=\"serif\"] Text font family\n  * @property {Float} [initOpacity=1] Initial opacity (multiplied by 100)\n  * @property {module:SVGEditor.XYDimensions} [dimensions=[640, 480]] The default width/height of a new document. Use an array in `setConfig` (e.g., `[800, 600]`) and comma separated numbers in the URL.\n  * @property {boolean} [gridSnapping=false] Enable snap to grid by default. Set in Editor Options.\n  * @property {string} [gridColor=\"#000\"] Accepts hex, e.g., '#000'. Set in Editor Options. Defaults to black.\n  * @property {string} [baseUnit=\"px\"] Set in Editor Options.\n  * @property {Float} [snappingStep=10] Set the default grid snapping value. Set in Editor Options.\n  * @property {boolean} [showRulers=true] Initial state of ruler display (v2.6). Set in Editor Options.\n  * @property {string} [initTool=\"select\"] The initially selected tool. Must be either the ID of the button for the tool, or the ID without `tool_` prefix (e.g., \"select\").\n  * @property {boolean} [wireframe=false] Start in wireframe mode\n  * @property {boolean} [showlayers=false] Open the layers side-panel by default.\n  * @property {\"new\"|\"same\"} [exportWindowType=\"new\"] Can be \"new\" or \"same\" to indicate whether new windows will be generated for each export; the `window.name` of the export window is namespaced based on the `canvasName` (and incremented if \"new\" is selected as the type). Introduced 2.8.\n  * @property {boolean} [showGrid=false] Set by `ext-grid.js`; determines whether or not to show the grid by default\n  * @property {boolean} [show_outside_canvas=true] Defines whether or not elements outside the canvas should be visible. Set and used in `svgcanvas.js`.\n  * @property {boolean} [selectNew=true] If true, will replace the selection with the current element and automatically select element objects (when not in \"path\" mode) after they are created, showing their grips (v2.6). Set and used in `svgcanvas.js` (`mouseUp`).\n  * @todo Some others could be preferences as well (e.g., preventing URL changing of extensions, defaultExtensions, stylesheets, colorPickerCSS); Change the following to preferences and add pref controls where missing to the UI (e.g., `canvas_expansion`, `initFill`, `initStroke`, `text`, `initOpacity`, `dimensions`, `initTool`, `wireframe`, `showlayers`, `gridSnapping`, `gridColor`, `baseUnit`, `snappingStep`, `showRulers`, `exportWindowType`, `showGrid`, `show_outside_canvas`, `selectNew`)?\n  */\n  /**\n  * @namespace {module:SVGEditor.Config} defaultConfig\n  * @memberof module:SVGEditor~\n  * @implements {module:SVGEditor.Config}\n  */\n  defaultConfig = {\n    canvasName: 'default',\n    canvas_expansion: 3,\n    initFill: {\n      color: 'FF0000', // solid red\n      opacity: 1\n    },\n    initStroke: {\n      width: 5,\n      color: '000000', // solid black\n      opacity: 1\n    },\n    text: {\n      stroke_width: 0,\n      font_size: 24,\n      font_family: 'serif'\n    },\n    initOpacity: 1,\n    colorPickerCSS: null, // Defaults to 'left' with a position equal to that of the fill_color or stroke_color element minus 140, and a 'bottom' equal to 40\n    initTool: 'select',\n    exportWindowType: 'new', // 'same' (todo: also support 'download')\n    wireframe: false,\n    showlayers: false,\n    no_save_warning: false,\n    // PATH CONFIGURATION\n    // The following path configuration items are disallowed in the URL (as should any future path configurations)\n    langPath: 'locale/', // Default will be changed if this is a non-modular load\n    extPath: 'extensions/', // Default will be changed if this is a non-modular load\n    canvgPath: 'canvg/', // Default will be changed if this is a non-modular load\n    jspdfPath: 'jspdf/', // Default will be changed if this is a non-modular load\n    imgPath: 'images/',\n    jGraduatePath: 'jgraduate/images/',\n    extIconsPath: 'extensions/',\n    // DOCUMENT PROPERTIES\n    // Change the following to a preference (already in the Document Properties dialog)?\n    dimensions: [640, 480],\n    // EDITOR OPTIONS\n    // Change the following to preferences (already in the Editor Options dialog)?\n    gridSnapping: false,\n    gridColor: '#000',\n    baseUnit: 'px',\n    snappingStep: 10,\n    showRulers: true,\n    // URL BEHAVIOR CONFIGURATION\n    preventAllURLConfig: false,\n    preventURLContentLoading: false,\n    // EXTENSION CONFIGURATION (see also preventAllURLConfig)\n    lockExtensions: false, // Disallowed in URL setting\n    noDefaultExtensions: false, // noDefaultExtensions can only be meaningfully used in `svgedit-config-iife.js` or in the URL\n    // EXTENSION-RELATED (GRID)\n    showGrid: false, // Set by ext-grid.js\n    // EXTENSION-RELATED (STORAGE)\n    noStorageOnLoad: false, // Some interaction with ext-storage.js; prevent even the loading of previously saved local storage\n    forceStorage: false, // Some interaction with ext-storage.js; strongly discouraged from modification as it bypasses user privacy by preventing them from choosing whether to keep local storage or not\n    emptyStorageOnDecline: false // Used by ext-storage.js; empty any prior storage if the user declines to store\n  },\n  /**\n  * LOCALE\n  * @name module:SVGEditor.uiStrings\n  * @type {PlainObject}\n  */\n  uiStrings = editor.uiStrings = {};\n\nlet svgCanvas, urldata,\n  isReady = false,\n  customExportImage = false,\n  customExportPDF = false,\n  curPrefs = {},\n  // Note: The difference between Prefs and Config is that Prefs\n  //   can be changed in the UI and are stored in the browser,\n  //   while config cannot\n  curConfig = {\n    // We do not put on defaultConfig to simplify object copying\n    //   procedures (we obtain instead from defaultExtensions)\n    extensions: [],\n    stylesheets: [],\n    /**\n    * Can use `location.origin` to indicate the current\n    * origin. Can contain a '*' to allow all domains or 'null' (as\n    * a string) to support all `file:///` URLs. Cannot be set by\n    * URL for security reasons (not safe, at least for\n    * privacy or data integrity of SVG content).\n    * Might have been fairly safe to allow\n    *   `new URL(location.href).origin` by default but\n    *   avoiding it ensures some more security that even third\n    *   party apps on the same domain also cannot communicate\n    *   with this app by default.\n    * For use with `ext-xdomain-messaging.js`\n    * @todo We might instead make as a user-facing preference.\n    */\n    allowedOrigins: []\n  };\n\n/**\n *\n * @param {string} str SVG string\n * @param {PlainObject} [opts={}]\n * @param {boolean} [opts.noAlert]\n * @throws {Error} Upon failure to load SVG\n * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is\n *   falsey, though only until after the `alert` is closed); rejects if SVG\n *   loading fails and `noAlert` is truthy.\n */\nasync function loadSvgString (str, {noAlert} = {}) {\n  const success = svgCanvas.setSvgString(str) !== false;\n  if (success) {\n    return;\n  }\n\n  if (!noAlert) {\n    await $.alert(uiStrings.notification.errorLoadingSVG);\n    return;\n  }\n  throw new Error('Error loading SVG');\n}\n\n/**\n * @function module:SVGEditor~getImportLocale\n * @param {PlainObject} defaults\n * @param {string} defaults.defaultLang\n * @param {string} defaults.defaultName\n * @returns {module:SVGEditor~ImportLocale}\n */\nfunction getImportLocale ({defaultLang, defaultName}) {\n  /**\n   * @function module:SVGEditor~ImportLocale\n   * @param {PlainObject} localeInfo\n   * @param {string} [localeInfo.name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}\n   * @param {string} [localeInfo.lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}\n   * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}\n   */\n  return async function importLocaleDefaulting ({name = defaultName, lang = defaultLang} = {}) {\n    /**\n     *\n     * @param {string} language\n     * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}\n     */\n    function importLocale (language) {\n      const url = `${curConfig.extPath}ext-locale/${name}/${language}.js`;\n      return importSetGlobalDefault(url, {\n        global: `svgEditorExtensionLocale_${name}_${language}`\n      });\n    }\n    try {\n      return await importLocale(lang);\n    } catch (err) {\n      return importLocale('en');\n    }\n  };\n}\n\n/**\n* EXPORTS\n*/\n\n/**\n* Store and retrieve preferences.\n* @param {string} key The preference name to be retrieved or set\n* @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.\n* @returns {string|undefined} If val is missing or falsey, the value of the previously stored preference will be returned.\n* @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?\n* @todo Review whether any remaining existing direct references to\n*  getting `curPrefs` can be changed to use `$.pref()` getting to ensure\n*  `defaultPrefs` fallback (also for sake of `allowInitialUserOverride`); specifically, `bkgd_color` could be changed so that\n*  the pref dialog has a button to auto-calculate background, but otherwise uses `$.pref()` to be able to get default prefs\n*  or overridable settings\n*/\n$.pref = function (key, val) {\n  if (val) {\n    curPrefs[key] = val;\n    /**\n    * @name curPrefs\n    * @memberof module:SVGEditor\n    * @implements {module:SVGEditor.Prefs}\n    */\n    editor.curPrefs = curPrefs; // Update exported value\n    return undefined;\n  }\n  return (key in curPrefs) ? curPrefs[key] : defaultPrefs[key];\n};\n\n/*\n* EDITOR PUBLIC METHODS\n// Todo: Sort these methods per invocation order, ideally with init at the end\n// Todo: Prevent execution until init executes if dependent on it?\n*/\neditor.putLocale = putLocale;\neditor.readLang = readLang;\neditor.setStrings = setStrings;\n\n/**\n* Where permitted, sets canvas and/or `defaultPrefs` based on previous\n*  storage. This will override URL settings (for security reasons) but\n*  not `svgedit-config-iife.js` configuration (unless initial user\n*  overriding is explicitly permitted there via `allowInitialUserOverride`).\n* @todo Split `allowInitialUserOverride` into `allowOverrideByURL` and\n*  `allowOverrideByUserStorage` so `svgedit-config-iife.js` can disallow some\n*  individual items for URL setting but allow for user storage AND/OR\n*  change URL setting so that it always uses a different namespace,\n*  so it won't affect pre-existing user storage (but then if users saves\n*  that, it will then be subject to tampering\n* @returns {undefined}\n*/\neditor.loadContentAndPrefs = function () {\n  if (!curConfig.forceStorage &&\n    (curConfig.noStorageOnLoad ||\n        !document.cookie.match(/(?:^|;\\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/)\n    )\n  ) {\n    return;\n  }\n\n  // LOAD CONTENT\n  if (editor.storage && // Cookies do not have enough available memory to hold large documents\n    (curConfig.forceStorage ||\n      (!curConfig.noStorageOnLoad &&\n        document.cookie.match(/(?:^|;\\s*)svgeditstorestore=prefsAndContent/))\n    )\n  ) {\n    const name = 'svgedit-' + curConfig.canvasName;\n    const cached = editor.storage.getItem(name);\n    if (cached) {\n      editor.loadFromString(cached);\n    }\n  }\n\n  // LOAD PREFS\n  Object.keys(defaultPrefs).forEach((key) => {\n    const storeKey = 'svg-edit-' + key;\n    if (editor.storage) {\n      const val = editor.storage.getItem(storeKey);\n      if (val) {\n        defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)\n      }\n    } else if (window.widget) {\n      defaultPrefs[key] = window.widget.preferenceForKey(storeKey);\n    } else {\n      const result = document.cookie.match(new RegExp('(?:^|;\\\\s*)' + Utils.regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));\n      defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';\n    }\n  });\n};\n\n/**\n* Allows setting of preferences or configuration (including extensions).\n* @param {module:SVGEditor.Config|module:SVGEditor.Prefs} opts The preferences or configuration (including extensions). See the tutorial on {@tutorial ConfigOptions} for info on config and preferences.\n* @param {PlainObject} [cfgCfg] Describes configuration which applies to the\n*    particular batch of supplied options\n* @param {boolean} [cfgCfg.allowInitialUserOverride=false] Set to true if you wish\n*  to allow initial overriding of settings by the user via the URL\n*  (if permitted) or previously stored preferences (if permitted);\n*  note that it will be too late if you make such calls in extension\n*  code because the URL or preference storage settings will\n*   have already taken place.\n* @param {boolean} [cfgCfg.overwrite=true] Set to false if you wish to\n*  prevent the overwriting of prior-set preferences or configuration\n*  (URL settings will always follow this requirement for security\n*  reasons, so `svgedit-config-iife.js` settings cannot be overridden unless it\n*  explicitly permits via `allowInitialUserOverride` but extension config\n*  can be overridden as they will run after URL settings). Should\n*   not be needed in `svgedit-config-iife.js`.\n* @returns {undefined}\n*/\neditor.setConfig = function (opts, cfgCfg) {\n  cfgCfg = cfgCfg || {};\n  /**\n   *\n   * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj\n   * @param {string} key\n   * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}\n   * @returns {undefined}\n   */\n  function extendOrAdd (cfgObj, key, val) {\n    if (cfgObj[key] && typeof cfgObj[key] === 'object') {\n      $.extend(true, cfgObj[key], val);\n    } else {\n      cfgObj[key] = val;\n    }\n  }\n  $.each(opts, function (key, val) {\n    if ({}.hasOwnProperty.call(opts, key)) {\n      // Only allow prefs defined in defaultPrefs\n      if ({}.hasOwnProperty.call(defaultPrefs, key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          {}.hasOwnProperty.call(curPrefs, key)\n        )) {\n          return;\n        }\n        if (cfgCfg.allowInitialUserOverride === true) {\n          defaultPrefs[key] = val;\n        } else {\n          $.pref(key, val);\n        }\n      } else if (['extensions', 'stylesheets', 'allowedOrigins'].includes(key)) {\n        if (cfgCfg.overwrite === false &&\n          (\n            curConfig.preventAllURLConfig ||\n            ['allowedOrigins', 'stylesheets'].includes(key) ||\n            (key === 'extensions' && curConfig.lockExtensions)\n          )\n        ) {\n          return;\n        }\n        curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later\n      // Only allow other curConfig if defined in defaultConfig\n      } else if ({}.hasOwnProperty.call(defaultConfig, key)) {\n        if (cfgCfg.overwrite === false && (\n          curConfig.preventAllURLConfig ||\n          {}.hasOwnProperty.call(curConfig, key)\n        )) {\n          return;\n        }\n        // Potentially overwriting of previously set config\n        if ({}.hasOwnProperty.call(curConfig, key)) {\n          if (cfgCfg.overwrite === false) {\n            return;\n          }\n          extendOrAdd(curConfig, key, val);\n        } else if (cfgCfg.allowInitialUserOverride === true) {\n          extendOrAdd(defaultConfig, key, val);\n        } else if (defaultConfig[key] && typeof defaultConfig[key] === 'object') {\n          curConfig[key] = {};\n          $.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects\n        } else {\n          curConfig[key] = val;\n        }\n      }\n    }\n  });\n  /**\n  * @name curConfig\n  * @memberof module:SVGEditor\n  * @implements {module:SVGEditor.Config}\n  */\n  editor.curConfig = curConfig; // Update exported value\n};\n\n/**\n* All methods are optional\n* @interface module:SVGEditor.CustomHandler\n* @type {PlainObject}\n*/\n/**\n* Its responsibilities are:\n*  - invoke a file chooser dialog in 'open' mode\n*  - let user pick a SVG file\n*  - calls [svgCanvas.setSvgString()]{@link module:svgcanvas.SvgCanvas#setSvgString} with the string contents of that file.\n* Not passed any parameters.\n* @function module:SVGEditor.CustomHandler#open\n* @returns {undefined}\n*/\n/**\n* Its responsibilities are:\n*  - accept the string contents of the current document\n*  - invoke a file chooser dialog in 'save' mode\n*  - save the file to location chosen by the user\n* @function module:SVGEditor.CustomHandler#save\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:saved} svgStr A string of the SVG\n* @listens module:svgcanvas.SvgCanvas#event:saved\n* @returns {undefined}\n*/\n/**\n* Its responsibilities (with regard to the object it is supplied in its 2nd argument) are:\n*  - inform user of any issues supplied via the \"issues\" property\n*  - convert the \"svg\" property SVG string into an image for export;\n*    utilize the properties \"type\" (currently 'PNG', 'JPEG', 'BMP',\n*    'WEBP', 'PDF'), \"mimeType\", and \"quality\" (for 'JPEG' and 'WEBP'\n*    types) to determine the proper output.\n* @function module:SVGEditor.CustomHandler#exportImage\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exported} data\n* @listens module:svgcanvas.SvgCanvas#event:exported\n* @returns {undefined}\n*/\n/**\n* @function module:SVGEditor.CustomHandler#exportPDF\n* @param {external:Window} win\n* @param {module:svgcanvas.SvgCanvas#event:exportedPDF} data\n* @listens module:svgcanvas.SvgCanvas#event:exportedPDF\n* @returns {undefined}\n*/\n\n/**\n* Allows one to override default SVGEdit `open`, `save`, and\n* `export` editor behaviors.\n* @param {module:SVGEditor.CustomHandler} opts Extension mechanisms may call `setCustomHandlers` with three functions: `opts.open`, `opts.save`, and `opts.exportImage`\n* @returns {undefined}\n*/\neditor.setCustomHandlers = function (opts) {\n  editor.ready(function () {\n    if (opts.open) {\n      $('#tool_open > input[type=\"file\"]').remove();\n      $('#tool_open').show();\n      svgCanvas.open = opts.open;\n    }\n    if (opts.save) {\n      editor.showSaveWarning = false;\n      svgCanvas.bind('saved', opts.save);\n    }\n    if (opts.exportImage) {\n      customExportImage = opts.exportImage;\n      svgCanvas.bind('exported', customExportImage); // canvg and our RGBColor will be available to the method\n    }\n    if (opts.exportPDF) {\n      customExportPDF = opts.exportPDF;\n      svgCanvas.bind('exportedPDF', customExportPDF); // jsPDF and our RGBColor will be available to the method\n    }\n  });\n};\n\n/**\n* @param {boolean} arg\n* @returns {undefined}\n*/\neditor.randomizeIds = function (arg) {\n  return svgCanvas.randomizeIds(arg);\n};\n\n/**\n* Auto-run after a Promise microtask.\n* @returns {undefined}\n*/\neditor.init = function () {\n  const modularVersion = !('svgEditor' in window) ||\n    !window.svgEditor ||\n    window.svgEditor.modules !== false;\n  if (!modularVersion) {\n    Object.assign(defaultConfig, {\n      langPath: '../dist/locale/',\n      extPath: '../dist/extensions/',\n      canvgPath: '../dist/',\n      jspdfPath: '../dist/'\n    });\n  }\n\n  // const host = location.hostname,\n  //  onWeb = host && host.includes('.');\n  // Some FF versions throw security errors here when directly accessing\n  try {\n    if ('localStorage' in window) { // && onWeb removed so Webkit works locally\n      /**\n      * The built-in interface implemented by `localStorage`\n      * @external Storage\n      */\n      /**\n      * @name storage\n      * @memberof module:SVGEditor\n      * @type {external:Storage}\n      */\n      editor.storage = localStorage;\n    }\n  } catch (err) {}\n\n  // Todo: Avoid const-defined functions and group functions together, etc. where possible\n  const goodLangs = [];\n  $('#lang_select option').each(function () {\n    goodLangs.push(this.value);\n  });\n\n  /**\n   * Sets up current preferences based on defaults.\n   * @returns {undefined}\n   */\n  function setupCurPrefs () {\n    curPrefs = $.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set\n    // Export updated prefs\n    editor.curPrefs = curPrefs;\n  }\n\n  /**\n   * Sets up current config based on defaults.\n   * @returns {undefined}\n   */\n  function setupCurConfig () {\n    curConfig = $.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set\n\n    // Now deal with extensions and other array config\n    if (!curConfig.noDefaultExtensions) {\n      curConfig.extensions = curConfig.extensions.concat(defaultExtensions);\n    }\n    // ...and remove any dupes\n    ['extensions', 'stylesheets', 'allowedOrigins'].forEach(function (cfg) {\n      curConfig[cfg] = $.grep(curConfig[cfg], function (n, i) { // Supposedly faster than filter per http://amandeep1986.blogspot.hk/2015/02/jquery-grep-vs-js-filter.html\n        return i === curConfig[cfg].indexOf(n);\n      });\n    });\n    // Export updated config\n    editor.curConfig = curConfig;\n  }\n  (() => {\n    // Load config/data from URL if given\n    let src, qstr;\n    urldata = $.deparam.querystring(true);\n    if (!$.isEmptyObject(urldata)) {\n      if (urldata.dimensions) {\n        urldata.dimensions = urldata.dimensions.split(',');\n      }\n\n      if (urldata.bkgd_color) {\n        urldata.bkgd_color = '#' + urldata.bkgd_color;\n      }\n\n      if (urldata.extensions) {\n        // For security reasons, disallow cross-domain or cross-folder extensions via URL\n        urldata.extensions = urldata.extensions.match(/[:/\\\\]/) ? '' : urldata.extensions.split(',');\n      }\n\n      // Disallowing extension paths via URL for\n      // security reasons, even for same-domain\n      // ones given potential to interact in undesirable\n      // ways with other script resources\n      [\n        'langPath', 'extPath', 'canvgPath', 'jspdfPath',\n        'imgPath', 'jGraduatePath', 'extIconsPath'\n      ].forEach(function (pathConfig) {\n        if (urldata[pathConfig]) {\n          delete urldata[pathConfig];\n        }\n      });\n\n      editor.setConfig(urldata, {overwrite: false}); // Note: source and url (as with storagePrompt later) are not set on config but are used below\n\n      setupCurConfig();\n\n      if (!curConfig.preventURLContentLoading) {\n        src = urldata.source;\n        qstr = $.param.querystring();\n        if (!src) { // urldata.source may have been null if it ended with '='\n          if (qstr.includes('source=data:')) {\n            src = qstr.match(/source=(data:[^&]*)/)[1];\n          }\n        }\n        if (src) {\n          if (src.startsWith('data:')) {\n            editor.loadFromDataURI(src);\n          } else {\n            editor.loadFromString(src);\n          }\n          return;\n        }\n        if (urldata.url) {\n          editor.loadFromURL(urldata.url);\n          return;\n        }\n      }\n      if (!urldata.noStorageOnLoad || curConfig.forceStorage) {\n        editor.loadContentAndPrefs();\n      }\n    } else {\n      setupCurConfig();\n      editor.loadContentAndPrefs();\n    }\n    setupCurPrefs();\n  })();\n\n  /**\n  * Called internally.\n  * @param {string|Element|external:jQuery} elem\n  * @param {string|external:jQuery} iconId\n  * @param {Float} forcedSize Not in use\n  * @returns {undefined}\n  */\n  const setIcon = editor.setIcon = function (elem, iconId, forcedSize) {\n    const icon = (typeof iconId === 'string') ? $.getSvgIcon(iconId, true) : iconId.clone();\n    if (!icon) {\n      // Todo: Investigate why this still occurs in some cases\n      console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console\n      return;\n    }\n    $(elem).empty().append(icon);\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n   * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n   * @fires module:svgcanvas.SvgCanvas#event:extensions_added\n   * @returns {Promise} Resolves to result of {@link module:locale.readLang}\n   */\n  const extAndLocaleFunc = async function () {\n    // const lang = ('lang' in curPrefs) ? curPrefs.lang : null;\n    const {langParam, langData} = await editor.putLocale(null, goodLangs, curConfig);\n    await setLang(langParam, langData);\n\n    const {ok, cancel} = uiStrings.common;\n    jQueryPluginDBox($, {ok, cancel});\n\n    try {\n      await Promise.all(\n        curConfig.extensions.map(async (extname) => {\n          const extName = extname.match(/^ext-(.+)\\.js/);\n          if (!extName) { // Ensure URL cannot specify some other unintended file in the extPath\n            return undefined;\n          }\n          const url = curConfig.extPath + extname;\n          // Todo: Replace this with `return import(url);` when\n          //   `import()` widely supported\n          /**\n           * @tutorial ExtensionDocs\n           * @typedef {PlainObject} module:SVGEditor.ExtensionObject\n           * @property {string} [name] Name of the extension. Used internally; no need for i18n. Defaults to extension name without beginning \"ext-\" or ending \".js\".\n           * @property {module:svgcanvas.ExtensionInitCallback} [init]\n           */\n          try {\n            /**\n             * @type {module:SVGEditor.ExtensionObject}\n             */\n            const imported = await importSetGlobalDefault(url, {\n              global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')\n            });\n            const {name = extName[1], init} = imported;\n            const importLocale = getImportLocale({defaultLang: langParam, defaultName: name});\n            return editor.addExtension(name, (init && init.bind(editor)), {$, importLocale});\n          } catch (err) {\n            // Todo: Add config to alert any errors\n            console.log(err); // eslint-disable-line no-console\n            console.error('Extension failed to load: ' + extname + '; ' + err); // eslint-disable-line no-console\n            return undefined;\n          }\n        })\n      );\n      svgCanvas.bind(\n        'extensions_added',\n        /**\n        * @param {external:Window} win\n        * @param {module:svgcanvas.SvgCanvas#event:extensions_added} data\n        * @listens module:svgcanvas.SvgCanvas#event:extensions_added\n        * @returns {undefined}\n        */\n        (win, data) => {\n          extensionsAdded = true;\n          Actions.setAll();\n\n          $('.flyout_arrow_horiz:empty').each(function () {\n            $(this).append($.getSvgIcon('arrow_right', true).width(5).height(5));\n          });\n\n          if (editor.storagePromptState === 'ignore') {\n            updateCanvas(true);\n          }\n\n          messageQueue.forEach(\n            /**\n             * @param {module:svgcanvas.SvgCanvas#event:message} messageObj\n             * @fires module:svgcanvas.SvgCanvas#event:message\n             * @returns {undefined}\n             */\n            (messageObj) => {\n              svgCanvas.call('message', messageObj);\n            }\n          );\n        }\n      );\n      svgCanvas.call('extensions_added');\n    } catch (err) {\n      // Todo: Report errors through the UI\n      console.log(err); // eslint-disable-line no-console\n    }\n  };\n\n  const stateObj = {tool_scale: editor.tool_scale};\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const setFlyoutPositions = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      const {left, top} = shower.offset();\n      const w = shower.outerWidth();\n      $(this).css({left: (left + w) * editor.tool_scale, top});\n    });\n  };\n\n  /**\n  * @type {string}\n  */\n  const uaPrefix = (function () {\n    const regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;\n    const someScript = document.getElementsByTagName('script')[0];\n    for (const prop in someScript.style) {\n      if (regex.test(prop)) {\n        // test is faster than match, so it's better to perform\n        // that on the lot and match only when necessary\n        return prop.match(regex)[0];\n      }\n    }\n    // Nothing found so far?\n    if ('WebkitOpacity' in someScript.style) { return 'Webkit'; }\n    if ('KhtmlOpacity' in someScript.style) { return 'Khtml'; }\n\n    return '';\n  }());\n\n  /**\n  * @param {external:jQuery} elems\n  * @param {Float} scale\n  * @returns {undefined}\n  */\n  const scaleElements = function (elems, scale) {\n    // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused\n    const sides = ['top', 'left', 'bottom', 'right'];\n\n    elems.each(function () {\n      // Handled in CSS\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const el = $(this);\n      const w = el.outerWidth() * (scale - 1);\n      const h = el.outerHeight() * (scale - 1);\n      // const margins = {}; // Currently unused\n\n      for (let i = 0; i < 4; i++) {\n        const s = sides[i];\n        let cur = el.data('orig_margin-' + s);\n        if (Utils.isNullish(cur)) {\n          cur = parseInt(el.css('margin-' + s));\n          // Cache the original margin\n          el.data('orig_margin-' + s, cur);\n        }\n        let val = cur * scale;\n        if (s === 'right') {\n          val += w;\n        } else if (s === 'bottom') {\n          val += h;\n        }\n\n        el.css('margin-' + s, val);\n        // el.css('outline', '1px solid red');\n      }\n    });\n  };\n\n  /**\n  * Called internally.\n  * @param {module:SVGEditor.IconSize} size\n  * @returns {undefined}\n  */\n  const setIconSize = editor.setIconSize = function (size) {\n    // const elems = $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open');\n    const selToscale = '#tools_top .toolset, #editor_panel > *, #history_panel > *,' +\n  '        #main_button, #tools_left > *, #path_node_panel > *, #multiselected_panel > *,' +\n  '        #g_panel > *, #tool_font_size > *, .tools_flyout';\n\n    const elems = $(selToscale);\n\n    let scale = 1;\n    if (typeof size === 'number') {\n      scale = size;\n    } else {\n      const iconSizes = {s: 0.75, m: 1, l: 1.25, xl: 1.5};\n      scale = iconSizes[size];\n    }\n\n    stateObj.tool_scale = editor.tool_scale = scale;\n\n    setFlyoutPositions();\n    // $('.tools_flyout').each(function () {\n    //   const pos = $(this).position();\n    //   console.log($(this), pos.left+(34 * scale));\n    //   $(this).css({left: pos.left+(34 * scale), top: pos.top+(77 * scale)});\n    //   console.log('l', $(this).css('left'));\n    // });\n    //\n    // const scale = .75;\n\n    const hiddenPs = elems.parents(':hidden');\n    hiddenPs.css('visibility', 'hidden').show();\n    scaleElements(elems, scale);\n    hiddenPs.css('visibility', 'visible').hide();\n    // return;\n\n    $.pref('iconsize', size);\n    $('#iconsize').val(size);\n\n    // Change icon size\n    // $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open')\n    // .find('> svg, > img').each(function () {\n    //   this.setAttribute('width',size_num);\n    //   this.setAttribute('height',size_num);\n    // });\n    //\n    // $.resizeSvgIcons({\n    //   '.flyout_arrow_horiz > svg, .flyout_arrow_horiz > img': size_num / 5,\n    //   '#logo > svg, #logo > img': size_num * 1.3,\n    //   '#tools_bottom .icon_label > *': (size_num === 16 ? 18 : size_num * .75)\n    // });\n    // if (size != 's') {\n    //   $.resizeSvgIcons({'#layerbuttons svg, #layerbuttons img': size_num * .6});\n    // }\n\n    // Note that all rules will be prefixed with '#svg_editor' when parsed\n    const cssResizeRules = {\n      // '.tool_button,\\\n      // .push_button,\\\n      // .tool_button_current,\\\n      // .push_button_pressed,\\\n      // .disabled,\\\n      // .icon_label,\\\n      // .tools_flyout .tool_button': {\n      //   width: {s: '16px', l: '32px', xl: '48px'},\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   padding: {s: '1px', l: '2px', xl: '3px'}\n      // },\n      // '.tool_sep': {\n      //   height: {s: '16px', l: '32px', xl: '48px'},\n      //   margin: {s: '2px 2px', l: '2px 5px', xl: '2px 8px'}\n      // },\n      // '#main_icon': {\n      //   width: {s: '31px', l: '53px', xl: '75px'},\n      //   height: {s: '22px', l: '42px', xl: '64px'}\n      // },\n      '#tools_top': {\n        left: 50 + $('#main_button').width(),\n        height: 72\n      },\n      '#tools_left': {\n        width: 31,\n        top: 74\n      },\n      'div#workarea': {\n        left: 38,\n        top: 74\n      }\n      // '#tools_bottom': {\n      //   left: {s: '27px', l: '46px', xl: '65px'},\n      //   height: {s: '58px', l: '98px', xl: '145px'}\n      // },\n      // '#color_tools': {\n      //   'border-spacing': {s: '0 1px'},\n      //   'margin-top': {s: '-1px'}\n      // },\n      // '#color_tools .icon_label': {\n      //   width: {l:'43px', xl: '60px'}\n      // },\n      // '.color_tool': {\n      //   height: {s: '20px'}\n      // },\n      // '#tool_opacity': {\n      //   top: {s: '1px'},\n      //   height: {s: 'auto', l:'auto', xl:'auto'}\n      // },\n      // '#tools_top input, #tools_bottom input': {\n      //   'margin-top': {s: '2px', l: '4px', xl: '5px'},\n      //   height: {s: 'auto', l: 'auto', xl: 'auto'},\n      //   border: {s: '1px solid #555', l: 'auto', xl: 'auto'},\n      //   'font-size': {s: '.9em', l: '1.2em', xl: '1.4em'}\n      // },\n      // '#zoom_panel': {\n      //   'margin-top': {s: '3px', l: '4px', xl: '5px'}\n      // },\n      // '#copyright, #tools_bottom .label': {\n      //   'font-size': {l: '1.5em', xl: '2em'},\n      //   'line-height': {s: '15px'}\n      // },\n      // '#tools_bottom_2': {\n      //   width: {l: '295px', xl: '355px'},\n      //   top: {s: '4px'}\n      // },\n      // '#tools_top > div, #tools_top': {\n      //   'line-height': {s: '17px', l: '34px', xl: '50px'}\n      // },\n      // '.dropdown button': {\n      //   height: {s: '18px', l: '34px', xl: '40px'},\n      //   'line-height': {s: '18px', l: '34px', xl: '40px'},\n      //   'margin-top': {s: '3px'}\n      // },\n      // '#tools_top label, #tools_bottom label': {\n      //   'font-size': {s: '1em', l: '1.5em', xl: '2em'},\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // 'div.toolset': {\n      //   height: {s: '25px', l: '42px', xl: '64px'}\n      // },\n      // '#tool_bold, #tool_italic': {\n      //   'font-size': {s: '1.5em', l: '3em', xl: '4.5em'}\n      // },\n      // '#sidepanels': {\n      //   top: {s: '50px', l: '88px', xl: '125px'},\n      //   bottom: {s: '51px', l: '68px', xl: '65px'}\n      // },\n      // '#layerbuttons': {\n      //   width: {l: '130px', xl: '175px'},\n      //   height: {l: '24px', xl: '30px'}\n      // },\n      // '#layerlist': {\n      //   width: {l: '128px', xl: '150px'}\n      // },\n      // '.layer_button': {\n      //   width: {l: '19px', xl: '28px'},\n      //   height: {l: '19px', xl: '28px'}\n      // },\n      // 'input.spin-button': {\n      //   'background-image': {l: 'url('images/spinbtn_updn_big.png')', xl: 'url('images/spinbtn_updn_big.png')'},\n      //   'background-position': {l: '100% -5px', xl: '100% -2px'},\n      //   'padding-right': {l: '24px', xl: '24px' }\n      // },\n      // 'input.spin-button.up': {\n      //   'background-position': {l: '100% -45px', xl: '100% -42px'}\n      // },\n      // 'input.spin-button.down': {\n      //   'background-position': {l: '100% -85px', xl: '100% -82px'}\n      // },\n      // '#position_opts': {\n      //   width: {all: (size_num*4) +'px'}\n      // }\n    };\n\n    let ruleElem = $('#tool_size_rules');\n    if (!ruleElem.length) {\n      ruleElem = $('<style id=\"tool_size_rules\"></style>').appendTo('head');\n    } else {\n      ruleElem.empty();\n    }\n\n    if (size !== 'm') {\n      let styleStr = '';\n      $.each(cssResizeRules, function (selector, rules) {\n        selector = '#svg_editor ' + selector.replace(/,/g, ', #svg_editor');\n        styleStr += selector + '{';\n        $.each(rules, function (prop, values) {\n          let val;\n          if (typeof values === 'number') {\n            val = (values * scale) + 'px';\n          } else if (values[size] || values.all) {\n            val = (values[size] || values.all);\n          }\n          styleStr += (prop + ':' + val + ';');\n        });\n        styleStr += '}';\n      });\n      // this.style[uaPrefix + 'Transform'] = 'scale(' + scale + ')';\n      const prefix = '-' + uaPrefix.toLowerCase() + '-';\n      styleStr += (selToscale + '{' + prefix + 'transform: scale(' + scale + ');}' +\n        ' #svg_editor div.toolset .toolset {' + prefix + 'transform: scale(1); margin: 1px !important;}' + // Hack for markers\n        ' #svg_editor .ui-slider {' + prefix + 'transform: scale(' + (1 / scale) + ');}' // Hack for sliders\n      );\n      ruleElem.text(styleStr);\n    }\n\n    setFlyoutPositions();\n  };\n  $.svgIcons(curConfig.imgPath + 'svg_edit_icons.svg', {\n    w: 24, h: 24,\n    id_match: false,\n    no_img: !isWebkit(), // Opera & Firefox 4 gives odd behavior w/images\n    fallback_path: curConfig.imgPath,\n    fallback: {\n      logo: 'logo.png',\n\n      select: 'select.png',\n      select_node: 'select_node.png',\n\n      square: 'square.png',\n      rect: 'rect.png',\n      fh_rect: 'freehand-square.png',\n      circle: 'circle.png',\n      ellipse: 'ellipse.png',\n      fh_ellipse: 'freehand-circle.png',\n      pencil: 'fhpath.png',\n      pen: 'line.png',\n      text: 'text.png',\n      path: 'path.png',\n      add_subpath: 'add_subpath.png',\n      close_path: 'closepath.png',\n      open_path: 'openpath.png',\n\n      image: 'image.png',\n      zoom: 'zoom.png',\n\n      arrow_right: 'flyouth.png',\n      arrow_right_big: 'arrow_right_big.png',\n      arrow_down: 'dropdown.gif',\n      fill: 'fill.png',\n      stroke: 'stroke.png',\n      opacity: 'opacity.png',\n\n      new_image: 'clear.png',\n      save: 'save.png',\n      export: 'export.png',\n      open: 'open.png',\n      import: 'import.png',\n      docprops: 'document-properties.png',\n      source: 'source.png',\n      wireframe: 'wireframe.png',\n\n      undo: 'undo.png',\n      redo: 'redo.png',\n\n      clone: 'clone.png',\n      delete: 'delete.png',\n      go_up: 'go-up.png',\n      go_down: 'go-down.png',\n      context_menu: 'context_menu.png',\n      move_bottom: 'move_bottom.png',\n      move_top: 'move_top.png',\n      to_path: 'to_path.png',\n      link_controls: 'link_controls.png',\n      reorient: 'reorient.png',\n      group_elements: 'shape_group_elements.png',\n\n      ungroup: 'shape_ungroup.png',\n      unlink_use: 'unlink_use.png',\n      width: 'width.png',\n      height: 'height.png',\n      c_radius: 'c_radius.png',\n      angle: 'angle.png',\n      blur: 'blur.png',\n      fontsize: 'fontsize.png',\n      align: 'align.png',\n\n      align_left: 'align-left.png',\n      align_center: 'align-center.png',\n      align_right: 'align-right.png',\n      align_top: 'align-top.png',\n      align_middle: 'align-middle.png',\n      align_bottom: 'align-bottom.png',\n\n      linecap_butt: 'linecap_butt.png',\n      linecap_square: 'linecap_square.png',\n      linecap_round: 'linecap_round.png',\n      linejoin_miter: 'linejoin_miter.png',\n      linejoin_bevel: 'linejoin_bevel.png',\n      linejoin_round: 'linejoin_round.png',\n      eye: 'eye.png',\n      no_color: 'no_color.png',\n\n      ok: 'save.png',\n      cancel: 'cancel.png',\n      warning: 'warning.png',\n\n      node_delete: 'node_delete.png',\n      node_clone: 'node_clone.png',\n\n      globe_link: 'globe_link.png'\n    },\n    placement: {\n      '#logo': 'logo',\n\n      '#tool_clear div,#layer_new': 'new_image',\n      '#tool_save div': 'save',\n      '#tool_export div': 'export',\n      '#tool_open div div': 'open',\n      '#tool_import div div': 'import',\n      '#tool_source': 'source',\n      '#tool_docprops > div': 'docprops',\n      '#tool_wireframe': 'wireframe',\n\n      '#tool_undo': 'undo',\n      '#tool_redo': 'redo',\n\n      '#tool_select': 'select',\n      '#tool_fhpath': 'pencil',\n      '#tool_line': 'pen',\n      '#tool_rect,#tools_rect_show': 'rect',\n      '#tool_square': 'square',\n      '#tool_fhrect': 'fh_rect',\n      '#tool_ellipse,#tools_ellipse_show': 'ellipse',\n      '#tool_circle': 'circle',\n      '#tool_fhellipse': 'fh_ellipse',\n      '#tool_path': 'path',\n      '#tool_text,#layer_rename': 'text',\n      '#tool_image': 'image',\n      '#tool_zoom': 'zoom',\n\n      '#tool_clone,#tool_clone_multi': 'clone',\n      '#tool_node_clone': 'node_clone',\n      '#layer_delete,#tool_delete,#tool_delete_multi': 'delete',\n      '#tool_node_delete': 'node_delete',\n      '#tool_add_subpath': 'add_subpath',\n      '#tool_openclose_path': 'open_path',\n      '#tool_move_top': 'move_top',\n      '#tool_move_bottom': 'move_bottom',\n      '#tool_topath': 'to_path',\n      '#tool_node_link': 'link_controls',\n      '#tool_reorient': 'reorient',\n      '#tool_group_elements': 'group_elements',\n      '#tool_ungroup': 'ungroup',\n      '#tool_unlink_use': 'unlink_use',\n\n      '#tool_alignleft, #tool_posleft': 'align_left',\n      '#tool_aligncenter, #tool_poscenter': 'align_center',\n      '#tool_alignright, #tool_posright': 'align_right',\n      '#tool_aligntop, #tool_postop': 'align_top',\n      '#tool_alignmiddle, #tool_posmiddle': 'align_middle',\n      '#tool_alignbottom, #tool_posbottom': 'align_bottom',\n      '#cur_position': 'align',\n\n      '#linecap_butt,#cur_linecap': 'linecap_butt',\n      '#linecap_round': 'linecap_round',\n      '#linecap_square': 'linecap_square',\n\n      '#linejoin_miter,#cur_linejoin': 'linejoin_miter',\n      '#linejoin_round': 'linejoin_round',\n      '#linejoin_bevel': 'linejoin_bevel',\n\n      '#url_notice': 'warning',\n\n      '#layer_up': 'go_up',\n      '#layer_down': 'go_down',\n      '#layer_moreopts': 'context_menu',\n      '#layerlist td.layervis': 'eye',\n\n      '#tool_source_save,#tool_docprops_save,#tool_prefs_save': 'ok',\n      '#tool_source_cancel,#tool_docprops_cancel,#tool_prefs_cancel': 'cancel',\n\n      '#rwidthLabel, #iwidthLabel': 'width',\n      '#rheightLabel, #iheightLabel': 'height',\n      '#cornerRadiusLabel span': 'c_radius',\n      '#angleLabel': 'angle',\n      '#linkLabel,#tool_make_link,#tool_make_link_multi': 'globe_link',\n      '#zoomLabel': 'zoom',\n      '#tool_fill label': 'fill',\n      '#tool_stroke .icon_label': 'stroke',\n      '#group_opacityLabel': 'opacity',\n      '#blurLabel': 'blur',\n      '#font_sizeLabel': 'fontsize',\n\n      '.flyout_arrow_horiz': 'arrow_right',\n      '.dropdown button, #main_button .dropdown': 'arrow_down',\n      '#palette .palette_item:first, #fill_bg, #stroke_bg': 'no_color'\n    },\n    resize: {\n      '#logo .svg_icon': 28,\n      '.flyout_arrow_horiz .svg_icon': 5,\n      '.layer_button .svg_icon, #layerlist td.layervis .svg_icon': 14,\n      '.dropdown button .svg_icon': 7,\n      '#main_button .dropdown .svg_icon': 9,\n      '.palette_item:first .svg_icon': 15,\n      '#fill_bg .svg_icon, #stroke_bg .svg_icon': 16,\n      '.toolbar_button button .svg_icon': 16,\n      '.stroke_tool div div .svg_icon': 20,\n      '#tools_bottom label .svg_icon': 18\n    },\n    async callback (icons) {\n      $('.toolbar_button button > svg, .toolbar_button button > img').each(function () {\n        $(this).parent().prepend(this);\n      });\n\n      const tleft = $('#tools_left');\n\n      let minHeight;\n      if (tleft.length) {\n        minHeight = tleft.offset().top + tleft.outerHeight();\n      }\n\n      const size = $.pref('iconsize');\n      editor.setIconSize(size || ($(window).height() < minHeight ? 's' : 'm'));\n\n      // Look for any missing flyout icons from plugins\n      $('.tools_flyout').each(function () {\n        const shower = $('#' + this.id + '_show');\n        const sel = shower.attr('data-curopt');\n        // Check if there's an icon here\n        if (!shower.children('svg, img').length) {\n          const clone = $(sel).children().clone();\n          if (clone.length) {\n            clone[0].removeAttribute('style'); // Needed for Opera\n            shower.append(clone);\n          }\n        }\n      });\n\n      /**\n       * Since stylesheets may be added out of order, we indicate the desired order\n       *   for defaults and others after them (in an indeterminate order).\n       * @param {string} stylesheetFile\n       * @returns {Integer|PositiveInfinity}\n       */\n      function getStylesheetPriority (stylesheetFile) {\n        switch (stylesheetFile) {\n        case 'jgraduate/css/jPicker.css':\n          return 1;\n        case 'jgraduate/css/jGraduate.css':\n          return 2;\n        case 'svg-editor.css':\n          return 3;\n        case 'spinbtn/jQuery.SpinButton.css':\n          return 4;\n        default:\n          return Infinity;\n        }\n      }\n      let stylesheets = $.loadingStylesheets.sort((a, b) => {\n        const priorityA = getStylesheetPriority(a);\n        const priorityB = getStylesheetPriority(b);\n        if (priorityA === priorityB) {\n          return 0;\n        }\n        return priorityA > priorityB;\n      });\n      if (curConfig.stylesheets.length) {\n        // Ensure a copy with unique items\n        stylesheets = [...new Set(curConfig.stylesheets)];\n        const idx = stylesheets.indexOf('@default');\n        if (idx > -1) {\n          stylesheets.splice(idx, 1, ...$.loadingStylesheets);\n        }\n      }\n      await loadStylesheets(stylesheets, {\n        acceptErrors ({stylesheetURL, reject, resolve}) {\n          if ($.loadingStylesheets.includes(stylesheetURL)) {\n            reject(new Error(`Missing expected stylesheet: ${stylesheetURL}`));\n            return;\n          }\n          resolve();\n        }\n      });\n      $('#svg_container')[0].style.visibility = 'visible';\n      await editor.runCallbacks();\n    }\n  });\n\n  /**\n  * @name module:SVGEditor.canvas\n  * @type {module:svgcanvas.SvgCanvas}\n  */\n  editor.canvas = svgCanvas = new SvgCanvas(\n    document.getElementById('svgcanvas'),\n    curConfig\n  );\n  const palette = [\n      // Todo: Make into configuration item?\n      '#000000', '#3f3f3f', '#7f7f7f', '#bfbfbf', '#ffffff',\n      '#ff0000', '#ff7f00', '#ffff00', '#7fff00',\n      '#00ff00', '#00ff7f', '#00ffff', '#007fff',\n      '#0000ff', '#7f00ff', '#ff00ff', '#ff007f',\n      '#7f0000', '#7f3f00', '#7f7f00', '#3f7f00',\n      '#007f00', '#007f3f', '#007f7f', '#003f7f',\n      '#00007f', '#3f007f', '#7f007f', '#7f003f',\n      '#ffaaaa', '#ffd4aa', '#ffffaa', '#d4ffaa',\n      '#aaffaa', '#aaffd4', '#aaffff', '#aad4ff',\n      '#aaaaff', '#d4aaff', '#ffaaff', '#ffaad4'\n    ],\n    modKey = (isMac() ? 'meta+' : 'ctrl+'), // ⌘\n    path = svgCanvas.pathActions,\n    {undoMgr} = svgCanvas,\n    workarea = $('#workarea'),\n    canvMenu = $('#cmenu_canvas'),\n    // layerMenu = $('#cmenu_layers'), // Unused\n    paintBox = {fill: null, stroke: null};\n\n  let resizeTimer, curScrollPos;\n  let exportWindow = null,\n    defaultImageURL = curConfig.imgPath + 'logo.png',\n    zoomInIcon = 'crosshair',\n    zoomOutIcon = 'crosshair',\n    uiContext = 'toolbars';\n\n  // For external openers\n  (function () {\n    // let the opener know SVG Edit is ready (now that config is set up)\n    const w = window.opener || window.parent;\n    if (w) {\n      try {\n        /**\n         * Triggered on a containing `document` (of `window.opener`\n         * or `window.parent`) when the editor is loaded.\n         * @event module:SVGEditor#event:svgEditorReadyEvent\n         * @type {Event}\n         * @property {true} bubbles\n         * @property {true} cancelable\n         */\n        /**\n         * @name module:SVGEditor.svgEditorReadyEvent\n         * @type {module:SVGEditor#event:svgEditorReadyEvent}\n         */\n        const svgEditorReadyEvent = new w.CustomEvent('svgEditorReady', {\n          bubbles: true,\n          cancelable: true\n        });\n        w.document.documentElement.dispatchEvent(svgEditorReadyEvent);\n      } catch (e) {}\n    }\n  }());\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const setSelectMode = function () {\n    const curr = $('.tool_button_current');\n    if (curr.length && curr[0].id !== 'tool_select') {\n      curr.removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n    svgCanvas.setMode('select');\n    workarea.css('cursor', 'auto');\n  };\n\n  // used to make the flyouts stay on the screen longer the very first time\n  // const flyoutspeed = 1250; // Currently unused\n  // let textBeingEntered = false; // Currently unused\n  const origTitle = $('title:first').text();\n  // Make [1,2,5] array\n  const rIntervals = [];\n  for (let i = 0.1; i < 1E5; i *= 10) {\n    rIntervals.push(i);\n    rIntervals.push(2 * i);\n    rIntervals.push(5 * i);\n  }\n\n  /**\n   * This function highlights the layer passed in (by fading out the other layers).\n   * If no layer is passed in, this function restores the other layers\n   * @param {string} [layerNameToHighlight]\n   * @returns {undefined}\n  */\n  const toggleHighlightLayer = function (layerNameToHighlight) {\n    let i;\n    const curNames = [], numLayers = svgCanvas.getCurrentDrawing().getNumLayers();\n    for (i = 0; i < numLayers; i++) {\n      curNames[i] = svgCanvas.getCurrentDrawing().getLayerName(i);\n    }\n\n    if (layerNameToHighlight) {\n      curNames.forEach((curName) => {\n        if (curName !== layerNameToHighlight) {\n          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);\n        }\n      });\n    } else {\n      curNames.forEach((curName) => {\n        svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);\n      });\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const populateLayers = function () {\n    svgCanvas.clearSelection();\n    const layerlist = $('#layerlist tbody').empty();\n    const selLayerNames = $('#selLayerNames').empty();\n    const drawing = svgCanvas.getCurrentDrawing();\n    const currentLayerName = drawing.getCurrentLayerName();\n    const icon = $.getSvgIcon('eye');\n    let layer = svgCanvas.getCurrentDrawing().getNumLayers();\n    // we get the layers in the reverse z-order (the layer rendered on top is listed first)\n    while (layer--) {\n      const name = drawing.getLayerName(layer);\n      const layerTr = $('<tr class=\"layer\">').toggleClass('layersel', name === currentLayerName);\n      const layerVis = $('<td class=\"layervis\">').toggleClass('layerinvis', !drawing.getLayerVisibility(name));\n      const layerName = $('<td class=\"layername\">' + name + '</td>');\n      layerlist.append(layerTr.append(layerVis, layerName));\n      selLayerNames.append('<option value=\"' + name + '\">' + name + '</option>');\n    }\n    if (icon !== undefined) {\n      const copy = icon.clone();\n      $('td.layervis', layerlist).append(copy);\n      $.resizeSvgIcons({'td.layervis .svg_icon': 14});\n    }\n    // handle selection of layer\n    $('#layerlist td.layername')\n      .mouseup(function (evt) {\n        $('#layerlist tr.layer').removeClass('layersel');\n        $(this.parentNode).addClass('layersel');\n        svgCanvas.setCurrentLayer(this.textContent);\n        evt.preventDefault();\n      })\n      .mouseover(function () {\n        toggleHighlightLayer(this.textContent);\n      })\n      .mouseout(function () {\n        toggleHighlightLayer();\n      });\n    $('#layerlist td.layervis').click(function () {\n      const row = $(this.parentNode).prevAll().length;\n      const name = $('#layerlist tr.layer:eq(' + row + ') td.layername').text();\n      const vis = $(this).hasClass('layerinvis');\n      svgCanvas.setLayerVisibility(name, vis);\n      $(this).toggleClass('layerinvis');\n    });\n\n    // if there were too few rows, let's add a few to make it not so lonely\n    let num = 5 - $('#layerlist tr.layer').size();\n    while (num-- > 0) {\n      // FIXME: there must a better way to do this\n      layerlist.append('<tr><td style=\"color:white\">_</td><td/></tr>');\n    }\n  };\n\n  let editingsource = false;\n  let origSource = '';\n\n  /**\n  * @param {Event} [e] Not used.\n  * @param {boolean} forSaving\n  * @returns {undefined}\n  */\n  const showSourceEditor = function (e, forSaving) {\n    if (editingsource) { return; }\n\n    editingsource = true;\n    origSource = svgCanvas.getSvgString();\n    $('#save_output_btns').toggle(Boolean(forSaving));\n    $('#tool_source_back').toggle(!forSaving);\n    $('#svg_source_textarea').val(origSource);\n    $('#svg_source_editor').fadeIn();\n    $('#svg_source_textarea').focus();\n  };\n\n  let selectedElement = null;\n  let multiselected = false;\n\n  /**\n  * @param {boolean} editmode\n  * @param {module:svgcanvas.SvgCanvas#event:selected} elems\n  * @returns {undefined}\n  */\n  const togglePathEditMode = function (editmode, elems) {\n    $('#path_node_panel').toggle(editmode);\n    $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);\n    if (editmode) {\n      // Change select icon\n      $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n      $('#tool_select').addClass('tool_button_current').removeClass('tool_button');\n      setIcon('#tool_select', 'select_node');\n      multiselected = false;\n      if (elems.length) {\n        selectedElement = elems[0];\n      }\n    } else {\n      setTimeout(() => {\n        setIcon('#tool_select', 'select');\n      }, 1000);\n    }\n  };\n\n  /**\n   * @type {module:svgcanvas.EventHandler}\n   * @param {external:Window} wind\n   * @param {module:svgcanvas.SvgCanvas#event:saved} svg The SVG source\n   * @listens module:svgcanvas.SvgCanvas#event:saved\n   * @returns {undefined}\n   */\n  const saveHandler = function (wind, svg) {\n    editor.showSaveWarning = false;\n\n    // by default, we add the XML prolog back, systems integrating SVG-edit (wikis, CMSs)\n    // can just provide their own custom save handler and might not want the XML prolog\n    svg = '<?xml version=\"1.0\"?>\\n' + svg;\n\n    // IE9 doesn't allow standalone Data URLs\n    // https://connect.microsoft.com/IE/feedback/details/542600/data-uri-images-fail-when-loaded-by-themselves\n    if (isIE()) {\n      showSourceEditor(0, true);\n      return;\n    }\n\n    // Since saving SVGs by opening a new window was removed in Chrome use artificial link-click\n    // https://stackoverflow.com/questions/45603201/window-is-not-allowed-to-navigate-top-frame-navigations-to-data-urls\n    const a = document.createElement('a');\n    a.href = 'data:image/svg+xml;base64,' + Utils.encode64(svg);\n    a.download = 'icon.svg';\n    a.style = 'display: none;';\n    document.body.append(a); // Need to append for Firefox\n\n    a.click();\n\n    // Alert will only appear the first time saved OR the\n    //   first time the bug is encountered\n    let done = $.pref('save_notice_done');\n\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', 'SVG');\n      // Check if FF and has <defs/>\n      if (isGecko()) {\n        if (svg.includes('<defs')) {\n          // warning about Mozilla bug #308590 when applicable (seems to be fixed now in Feb 2013)\n          note += '\\n\\n' + uiStrings.notification.defsFailOnSave;\n          $.pref('save_notice_done', 'all');\n          done = 'all';\n        } else {\n          $.pref('save_notice_done', 'part');\n        }\n      } else {\n        $.pref('save_notice_done', 'all');\n      }\n      if (done !== 'part') {\n        $.alert(note);\n      }\n    }\n  };\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:exported} data\n   * @listens module:svgcanvas.SvgCanvas#event:exported\n   * @returns {undefined}\n   */\n  const exportHandler = function (win, data) {\n    const {issues, exportWindowName} = data;\n\n    exportWindow = window.open(Utils.blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n\n    if (!exportWindow || exportWindow.closed) {\n      /* await */ $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n\n    exportWindow.location.href = data.bloburl || data.datauri;\n    const done = $.pref('export_notice_done');\n    if (done !== 'all') {\n      let note = uiStrings.notification.saveFromBrowser.replace('%s', data.type);\n\n      // Check if there are issues\n      if (issues.length) {\n        const pre = '\\n \\u2022 ';\n        note += ('\\n\\n' + uiStrings.notification.noteTheseIssues + pre + issues.join(pre));\n      }\n\n      // Note that this will also prevent the notice even though new issues may appear later.\n      // May want to find a way to deal with that without annoying the user\n      $.pref('export_notice_done', 'all');\n      exportWindow.alert(note);\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const operaRepaint = function () {\n    // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change\n    if (!window.opera) {\n      return;\n    }\n    $('<p/>').hide().appendTo('body').remove();\n  };\n\n  /**\n   *\n   * @param {Element} opt\n   * @param {boolean} changeElem\n   * @returns {undefined}\n   */\n  function setStrokeOpt (opt, changeElem) {\n    const {id} = opt;\n    const bits = id.split('_');\n    const [pre, val] = bits;\n\n    if (changeElem) {\n      svgCanvas.setStrokeAttr('stroke-' + pre, val);\n    }\n    operaRepaint();\n    setIcon('#cur_' + pre, id, 20);\n    $(opt).addClass('current').siblings().removeClass('current');\n  }\n\n  /**\n  * This is a common function used when a tool has been clicked (chosen).\n  * It does several common things:\n  * - Removes the `tool_button_current` class from whatever tool currently has it.\n  * - Hides any flyouts.\n  * - Adds the `tool_button_current` class to the button passed in.\n  * @function module:SVGEDitor.toolButtonClick\n  * @param {string|Element} button The DOM element or string selector representing the toolbar button\n  * @param {boolean} noHiding Whether not to hide any flyouts\n  * @returns {boolean} Whether the button was disabled or not\n  */\n  const toolButtonClick = editor.toolButtonClick = function (button, noHiding) {\n    if ($(button).hasClass('disabled')) { return false; }\n    if ($(button).parent().hasClass('tools_flyout')) { return true; }\n    const fadeFlyouts = 'normal';\n    if (!noHiding) {\n      $('.tools_flyout').fadeOut(fadeFlyouts);\n    }\n    $('#styleoverrides').text('');\n    workarea.css('cursor', 'auto');\n    $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');\n    $(button).addClass('tool_button_current').removeClass('tool_button');\n    return true;\n  };\n\n  /**\n  * Unless the select toolbar button is disabled, sets the button\n  * and sets the select mode and cursor styles.\n  * @function module:SVGEditor.clickSelect\n  * @returns {undefined}\n  */\n  const clickSelect = editor.clickSelect = function () {\n    if (toolButtonClick('#tool_select')) {\n      svgCanvas.setMode('select');\n      $('#styleoverrides').text(`\n        #svgcanvas svg * {\n          cursor: move;\n          pointer-events: all;\n        }\n        #svgcanvas svg {\n          cursor: default;\n        }\n      `);\n    }\n  };\n\n  /**\n  * Set a selected image's URL.\n  * @function module:SVGEditor.setImageURL\n  * @param {string} url\n  * @returns {undefined}\n  */\n  const setImageURL = editor.setImageURL = function (url) {\n    if (!url) {\n      url = defaultImageURL;\n    }\n    svgCanvas.setImageURL(url);\n    $('#image_url').val(url);\n\n    if (url.startsWith('data:')) {\n      // data URI found\n      $('#image_url').hide();\n      $('#change_image_url').show();\n    } else {\n      // regular URL\n      svgCanvas.embedImage(url, function (dataURI) {\n        // Couldn't embed, so show warning\n        $('#url_notice').toggle(!dataURI);\n        defaultImageURL = url;\n      });\n      $('#image_url').show();\n      $('#change_image_url').hide();\n    }\n  };\n\n  /**\n   *\n   * @param {string} color\n   * @param {string} url\n   * @returns {undefined}\n   */\n  function setBackground (color, url) {\n    // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }\n    $.pref('bkgd_color', color);\n    $.pref('bkgd_url', url);\n\n    // This should be done in svgcanvas.js for the borderRect fill\n    svgCanvas.setBackground(color, url);\n  }\n\n  /**\n   * @param {PlainObject} [opts={}]\n   * @param {boolean} [opts.cancelDeletes=false}]\n   * @returns {Promise} Resolves to `undefined`\n   */\n  async function promptImgURL ({cancelDeletes = false} = {}) {\n    let curhref = svgCanvas.getHref(selectedElement);\n    curhref = curhref.startsWith('data:') ? '' : curhref;\n    const url = await $.prompt(uiStrings.notification.enterNewImgURL, curhref);\n    if (url) {\n      setImageURL(url);\n    } else if (cancelDeletes) {\n      svgCanvas.deleteSelectedElements();\n    }\n  }\n\n  /**\n  * @param {Element} elem\n  * @returns {undefined}\n  */\n  const setInputWidth = function (elem) {\n    const w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);\n    $(elem).width(w);\n  };\n\n  /**\n   *\n   * @param {HTMLDivElement} [scanvas]\n   * @param {Float} [zoom]\n   * @returns {undefined}\n   */\n  function updateRulers (scanvas, zoom) {\n    if (!zoom) { zoom = svgCanvas.getZoom(); }\n    if (!scanvas) { scanvas = $('#svgcanvas'); }\n\n    let d, i;\n    const limit = 30000;\n    const contentElem = svgCanvas.getContentElem();\n    const units = getTypeMap();\n    const unit = units[curConfig.baseUnit]; // 1 = 1px\n\n    // draw x ruler then y ruler\n    for (d = 0; d < 2; d++) {\n      const isX = (d === 0);\n      const dim = isX ? 'x' : 'y';\n      const lentype = isX ? 'width' : 'height';\n      const contentDim = Number(contentElem.getAttribute(dim));\n\n      const $hcanvOrig = $('#ruler_' + dim + ' canvas:first');\n\n      // Bit of a hack to fully clear the canvas in Safari & IE9\n      const $hcanv = $hcanvOrig.clone();\n      $hcanvOrig.replaceWith($hcanv);\n\n      const hcanv = $hcanv[0];\n\n      // Set the canvas size to the width of the container\n      let rulerLen = scanvas[lentype]();\n      const totalLen = rulerLen;\n      hcanv.parentNode.style[lentype] = totalLen + 'px';\n      let ctx = hcanv.getContext('2d');\n      let ctxArr, num, ctxArrNum;\n\n      ctx.fillStyle = 'rgb(200,0,0)';\n      ctx.fillRect(0, 0, hcanv.width, hcanv.height);\n\n      // Remove any existing canvasses\n      $hcanv.siblings().remove();\n\n      // Create multiple canvases when necessary (due to browser limits)\n      if (rulerLen >= limit) {\n        ctxArrNum = parseInt(rulerLen / limit) + 1;\n        ctxArr = [];\n        ctxArr[0] = ctx;\n        let copy;\n        for (i = 1; i < ctxArrNum; i++) {\n          hcanv[lentype] = limit;\n          copy = hcanv.cloneNode(true);\n          hcanv.parentNode.append(copy);\n          ctxArr[i] = copy.getContext('2d');\n        }\n\n        copy[lentype] = rulerLen % limit;\n\n        // set copy width to last\n        rulerLen = limit;\n      }\n\n      hcanv[lentype] = rulerLen;\n\n      const uMulti = unit * zoom;\n\n      // Calculate the main number interval\n      const rawM = 50 / uMulti;\n      let multi = 1;\n      for (i = 0; i < rIntervals.length; i++) {\n        num = rIntervals[i];\n        multi = num;\n        if (rawM <= num) {\n          break;\n        }\n      }\n\n      const bigInt = multi * uMulti;\n\n      ctx.font = '9px sans-serif';\n\n      let rulerD = ((contentDim / uMulti) % multi) * uMulti;\n      let labelPos = rulerD - bigInt;\n      // draw big intervals\n      let ctxNum = 0;\n      while (rulerD < totalLen) {\n        labelPos += bigInt;\n        // const realD = rulerD - contentDim; // Currently unused\n\n        const curD = Math.round(rulerD) + 0.5;\n        if (isX) {\n          ctx.moveTo(curD, 15);\n          ctx.lineTo(curD, 0);\n        } else {\n          ctx.moveTo(15, curD);\n          ctx.lineTo(0, curD);\n        }\n\n        num = (labelPos - contentDim) / uMulti;\n        let label;\n        if (multi >= 1) {\n          label = Math.round(num);\n        } else {\n          const decs = String(multi).split('.')[1].length;\n          label = num.toFixed(decs);\n        }\n\n        // Change 1000s to Ks\n        if (label !== 0 && label !== 1000 && label % 1000 === 0) {\n          label = (label / 1000) + 'K';\n        }\n\n        if (isX) {\n          ctx.fillText(label, rulerD + 2, 8);\n        } else {\n          // draw label vertically\n          const str = String(label).split('');\n          for (i = 0; i < str.length; i++) {\n            ctx.fillText(str[i], 1, (rulerD + 9) + i * 9);\n          }\n        }\n\n        const part = bigInt / 10;\n        // draw the small intervals\n        for (i = 1; i < 10; i++) {\n          let subD = Math.round(rulerD + part * i) + 0.5;\n          if (ctxArr && subD > rulerLen) {\n            ctxNum++;\n            ctx.stroke();\n            if (ctxNum >= ctxArrNum) {\n              i = 10;\n              rulerD = totalLen;\n              continue;\n            }\n            ctx = ctxArr[ctxNum];\n            rulerD -= limit;\n            subD = Math.round(rulerD + part * i) + 0.5;\n          }\n\n          // odd lines are slighly longer\n          const lineNum = (i % 2) ? 12 : 10;\n          if (isX) {\n            ctx.moveTo(subD, 15);\n            ctx.lineTo(subD, lineNum);\n          } else {\n            ctx.moveTo(15, subD);\n            ctx.lineTo(lineNum, subD);\n          }\n        }\n        rulerD += bigInt;\n      }\n      ctx.strokeStyle = '#000';\n      ctx.stroke();\n    }\n  }\n\n  /**\n  * @function module:SVGEditor.updateCanvas\n  * @param {boolean} center\n  * @param {module:math.XYObject} newCtr\n  * @returns {undefined}\n  */\n  const updateCanvas = editor.updateCanvas = function (center, newCtr) {\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n    const cnvs = $('#svgcanvas');\n\n    let w = workarea.width(), h = workarea.height();\n    const wOrig = w, hOrig = h;\n    const oldCtr = {\n      x: wArea[0].scrollLeft + wOrig / 2,\n      y: wArea[0].scrollTop + hOrig / 2\n    };\n    const multi = curConfig.canvas_expansion;\n    w = Math.max(wOrig, svgCanvas.contentW * zoom * multi);\n    h = Math.max(hOrig, svgCanvas.contentH * zoom * multi);\n\n    if (w === wOrig && h === hOrig) {\n      workarea.css('overflow', 'hidden');\n    } else {\n      workarea.css('overflow', 'scroll');\n    }\n\n    const oldCanY = cnvs.height() / 2;\n    const oldCanX = cnvs.width() / 2;\n    cnvs.width(w).height(h);\n    const newCanY = h / 2;\n    const newCanX = w / 2;\n    const offset = svgCanvas.updateCanvas(w, h);\n\n    const ratio = newCanX / oldCanX;\n\n    const scrollX = w / 2 - wOrig / 2; // eslint-disable-line no-shadow\n    const scrollY = h / 2 - hOrig / 2; // eslint-disable-line no-shadow\n\n    if (!newCtr) {\n      const oldDistX = oldCtr.x - oldCanX;\n      const newX = newCanX + oldDistX * ratio;\n\n      const oldDistY = oldCtr.y - oldCanY;\n      const newY = newCanY + oldDistY * ratio;\n\n      newCtr = {\n        x: newX,\n        y: newY\n      };\n    } else {\n      newCtr.x += offset.x;\n      newCtr.y += offset.y;\n    }\n\n    if (center) {\n      // Go to top-left for larger documents\n      if (svgCanvas.contentW > wArea.width()) {\n        // Top-left\n        workarea[0].scrollLeft = offset.x - 10;\n        workarea[0].scrollTop = offset.y - 10;\n      } else {\n        // Center\n        wArea[0].scrollLeft = scrollX;\n        wArea[0].scrollTop = scrollY;\n      }\n    } else {\n      wArea[0].scrollLeft = newCtr.x - wOrig / 2;\n      wArea[0].scrollTop = newCtr.y - hOrig / 2;\n    }\n    if (curConfig.showRulers) {\n      updateRulers(cnvs, zoom);\n      workarea.scroll();\n    }\n\n    if (urldata.storagePrompt !== true && editor.storagePromptState === 'ignore') {\n      $('#dialog_box').hide();\n    }\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate\n   * @returns {undefined}\n   */\n  const updateToolButtonState = function () {\n    const bNoFill = (svgCanvas.getColor('fill') === 'none');\n    const bNoStroke = (svgCanvas.getColor('stroke') === 'none');\n    const buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];\n    const buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];\n\n    if (bNoStroke) {\n      buttonsNeedingStroke.forEach((btn) => {\n        if ($(btn).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(btn).addClass('disabled');\n      });\n    } else {\n      buttonsNeedingStroke.forEach((btn) => {\n        $(btn).removeClass('disabled');\n      });\n    }\n\n    if (bNoStroke && bNoFill) {\n      buttonsNeedingFillAndStroke.forEach((btn) => {\n        if ($(btn).hasClass('tool_button_current')) {\n          clickSelect();\n        }\n        $(btn).addClass('disabled');\n      });\n    } else {\n      buttonsNeedingFillAndStroke.forEach((btn) => {\n        $(btn).removeClass('disabled');\n      });\n    }\n\n    svgCanvas.runExtensions('toolButtonStateUpdate', /** @type {module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate} */ {\n      nofill: bNoFill,\n      nostroke: bNoStroke\n    });\n\n    // Disable flyouts if all inside are disabled\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      let hasEnabled = false;\n      $(this).children().each(function () {\n        if (!$(this).hasClass('disabled')) {\n          hasEnabled = true;\n        }\n      });\n      shower.toggleClass('disabled', !hasEnabled);\n    });\n\n    operaRepaint();\n  };\n\n  /**\n  * Updates the toolbar (colors, opacity, etc) based on the selected element.\n  * This function also updates the opacity and id elements that are in the\n  * context panel.\n  * @returns {undefined}\n  */\n  const updateToolbar = function () {\n    let i, len;\n    if (!Utils.isNullish(selectedElement)) {\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        break;\n      case 'g':\n      case 'a': {\n        // Look for common styles\n        const childs = selectedElement.getElementsByTagName('*');\n        let gWidth = null;\n        for (i = 0, len = childs.length; i < len; i++) {\n          const swidth = childs[i].getAttribute('stroke-width');\n\n          if (i === 0) {\n            gWidth = swidth;\n          } else if (gWidth !== swidth) {\n            gWidth = null;\n          }\n        }\n\n        $('#stroke_width').val(gWidth === null ? '' : gWidth);\n\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        break;\n      } default: {\n        paintBox.fill.update(true);\n        paintBox.stroke.update(true);\n\n        $('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);\n        $('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');\n\n        let attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';\n\n        if ($('#linejoin_' + attr).length) {\n          setStrokeOpt($('#linejoin_' + attr)[0]);\n        }\n\n        attr = selectedElement.getAttribute('stroke-linecap') || 'butt';\n\n        if ($('#linecap_' + attr).length) {\n          setStrokeOpt($('#linecap_' + attr)[0]);\n        }\n      }\n      }\n    }\n\n    // All elements including image and group have opacity\n    if (!Utils.isNullish(selectedElement)) {\n      const opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;\n      $('#group_opacity').val(opacPerc);\n      $('#opac_slider').slider('option', 'value', opacPerc);\n      $('#elem_id').val(selectedElement.id);\n      $('#elem_class').val(selectedElement.getAttribute('class'));\n    }\n\n    updateToolButtonState();\n  };\n\n  /**\n  * Updates the context panel tools based on the selected element.\n  * @returns {undefined}\n  */\n  const updateContextPanel = function () {\n    let elem = selectedElement;\n    // If element has just been deleted, consider it null\n    if (!Utils.isNullish(elem) && !elem.parentNode) { elem = null; }\n    const currentLayerName = svgCanvas.getCurrentDrawing().getCurrentLayerName();\n    const currentMode = svgCanvas.getMode();\n    const unit = curConfig.baseUnit !== 'px' ? curConfig.baseUnit : null;\n\n    const isNode = currentMode === 'pathedit'; // elem ? (elem.id && elem.id.startsWith('pathpointgrip')) : false;\n    const menuItems = $('#cmenu_canvas li');\n    $('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' +\n      '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' +\n      ' #use_panel, #a_panel').hide();\n    if (!Utils.isNullish(elem)) {\n      const elname = elem.nodeName;\n      // If this is a link with no transform and one child, pretend\n      // its child is selected\n      // if (elname === 'a') { // && !$(elem).attr('transform')) {\n      //   elem = elem.firstChild;\n      // }\n\n      const angle = svgCanvas.getRotationAngle(elem);\n      $('#angle').val(angle);\n\n      const blurval = svgCanvas.getBlur(elem);\n      $('#blur').val(blurval);\n      $('#blur_slider').slider('option', 'value', blurval);\n\n      if (svgCanvas.addedNew) {\n        if (elname === 'image' && svgCanvas.getMode() === 'image') {\n          // Prompt for URL if not a data URL\n          if (!svgCanvas.getHref(elem).startsWith('data:')) {\n            /* await */ promptImgURL({cancelDeletes: true});\n          }\n        }\n        /* else if (elname == 'text') {\n          // TODO: Do something here for new text\n        } */\n      }\n\n      if (!isNode && currentMode !== 'pathedit') {\n        $('#selected_panel').show();\n        // Elements in this array already have coord fields\n        if (['line', 'circle', 'ellipse'].includes(elname)) {\n          $('#xy_panel').hide();\n        } else {\n          let x, y;\n\n          // Get BBox vals for g, polyline and path\n          if (['g', 'polyline', 'path'].includes(elname)) {\n            const bb = svgCanvas.getStrokedBBox([elem]);\n            if (bb) {\n              ({x, y} = bb);\n            }\n          } else {\n            x = elem.getAttribute('x');\n            y = elem.getAttribute('y');\n          }\n\n          if (unit) {\n            x = convertUnit(x);\n            y = convertUnit(y);\n          }\n\n          $('#selected_x').val(x || 0);\n          $('#selected_y').val(y || 0);\n          $('#xy_panel').show();\n        }\n\n        // Elements in this array cannot be converted to a path\n        const noPath = !['image', 'text', 'path', 'g', 'use'].includes(elname);\n        $('#tool_topath').toggle(noPath);\n        $('#tool_reorient').toggle(elname === 'path');\n        $('#tool_reorient').toggleClass('disabled', angle === 0);\n      } else {\n        const point = path.getNodePoint();\n        $('#tool_add_subpath').removeClass('push_button_pressed').addClass('tool_button');\n        $('#tool_node_delete').toggleClass('disabled', !path.canDeleteNodes);\n\n        // Show open/close button based on selected point\n        setIcon('#tool_openclose_path', path.closed_subpath ? 'open_path' : 'close_path');\n\n        if (point) {\n          const segType = $('#seg_type');\n          if (unit) {\n            point.x = convertUnit(point.x);\n            point.y = convertUnit(point.y);\n          }\n          $('#path_node_x').val(point.x);\n          $('#path_node_y').val(point.y);\n          if (point.type) {\n            segType.val(point.type).removeAttr('disabled');\n          } else {\n            segType.val(4).attr('disabled', 'disabled');\n          }\n        }\n        return;\n      }\n\n      // update contextual tools here\n      const panels = {\n        g: [],\n        a: [],\n        rect: ['rx', 'width', 'height'],\n        image: ['width', 'height'],\n        circle: ['cx', 'cy', 'r'],\n        ellipse: ['cx', 'cy', 'rx', 'ry'],\n        line: ['x1', 'y1', 'x2', 'y2'],\n        text: [],\n        use: []\n      };\n\n      const {tagName} = elem;\n\n      // if ($(elem).data('gsvg')) {\n      //   $('#g_panel').show();\n      // }\n\n      let linkHref = null;\n      if (tagName === 'a') {\n        linkHref = svgCanvas.getHref(elem);\n        $('#g_panel').show();\n      }\n\n      if (elem.parentNode.tagName === 'a') {\n        if (!$(elem).siblings().length) {\n          $('#a_panel').show();\n          linkHref = svgCanvas.getHref(elem.parentNode);\n        }\n      }\n\n      // Hide/show the make_link buttons\n      $('#tool_make_link, #tool_make_link').toggle(!linkHref);\n\n      if (linkHref) {\n        $('#link_url').val(linkHref);\n      }\n\n      if (panels[tagName]) {\n        const curPanel = panels[tagName];\n\n        $('#' + tagName + '_panel').show();\n\n        $.each(curPanel, function (i, item) {\n          let attrVal = elem.getAttribute(item);\n          if (curConfig.baseUnit !== 'px' && elem[item]) {\n            const bv = elem[item].baseVal.value;\n            attrVal = convertUnit(bv);\n          }\n          $('#' + tagName + '_' + item).val(attrVal || 0);\n        });\n\n        if (tagName === 'text') {\n          $('#text_panel').css('display', 'inline');\n          $('#tool_font_size').css('display', 'inline');\n          if (svgCanvas.getItalic()) {\n            $('#tool_italic').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_italic').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          if (svgCanvas.getBold()) {\n            $('#tool_bold').addClass('push_button_pressed').removeClass('tool_button');\n          } else {\n            $('#tool_bold').removeClass('push_button_pressed').addClass('tool_button');\n          }\n          $('#font_family').val(elem.getAttribute('font-family'));\n          $('#font_size').val(elem.getAttribute('font-size'));\n          $('#text').val(elem.textContent);\n          if (svgCanvas.addedNew) {\n            // Timeout needed for IE9\n            setTimeout(function () {\n              $('#text').focus().select();\n            }, 100);\n          }\n        // text\n        } else if (tagName === 'image' && svgCanvas.getMode() === 'image') {\n          setImageURL(svgCanvas.getHref(elem));\n        // image\n        } else if (tagName === 'g' || tagName === 'use') {\n          $('#container_panel').show();\n          const title = svgCanvas.getTitle();\n          const label = $('#g_title')[0];\n          label.value = title;\n          setInputWidth(label);\n          $('#g_title').prop('disabled', tagName === 'use');\n        }\n      }\n      menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');\n      menuItems[((tagName === 'g' || !multiselected) ? 'dis' : 'en') + 'ableContextMenuItems']('#group');\n    // if (!Utils.isNullish(elem))\n    } else if (multiselected) {\n      $('#multiselected_panel').show();\n      menuItems\n        .enableContextMenuItems('#group')\n        .disableContextMenuItems('#ungroup');\n    } else {\n      menuItems.disableContextMenuItems('#delete,#cut,#copy,#group,#ungroup,#move_front,#move_up,#move_down,#move_back');\n    }\n\n    // update history buttons\n    $('#tool_undo').toggleClass('disabled', undoMgr.getUndoStackSize() === 0);\n    $('#tool_redo').toggleClass('disabled', undoMgr.getRedoStackSize() === 0);\n\n    svgCanvas.addedNew = false;\n\n    if ((elem && !isNode) || multiselected) {\n      // update the selected elements' layer\n      $('#selLayerNames').removeAttr('disabled').val(currentLayerName);\n\n      // Enable regular menu options\n      canvMenu.enableContextMenuItems(\n        '#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back'\n      );\n    } else {\n      $('#selLayerNames').attr('disabled', 'disabled');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const updateWireFrame = function () {\n    // Test support\n    if (supportsNonSS) { return; }\n\n    const rule = `\n      #workarea.wireframe #svgcontent * {\n        stroke-width: ${1 / svgCanvas.getZoom()}px;\n      }\n    `;\n    $('#wireframe_rules').text(workarea.hasClass('wireframe') ? rule : '');\n  };\n\n  let curContext = '';\n\n  /**\n  * @param {string} [title=svgCanvas.getDocumentTitle()]\n  * @returns {undefined}\n  */\n  const updateTitle = function (title) {\n    title = title || svgCanvas.getDocumentTitle();\n    const newTitle = origTitle + (title ? ': ' + title : '');\n\n    // Remove title update with current context info, isn't really necessary\n    // if (curContext) {\n    //   new_title = new_title + curContext;\n    // }\n    $('title:first').text(newTitle);\n  };\n\n  // called when we've selected a different element\n  /**\n  *\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:selected} elems Array of elements that were selected\n  * @listens module:svgcanvas.SvgCanvas#event:selected\n  * @fires module:svgcanvas.SvgCanvas#event:ext-selectedChanged\n  * @returns {undefined}\n  */\n  const selectedChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n    const isNode = mode === 'pathedit';\n    // if elems[1] is present, then we have more than one element\n    selectedElement = (elems.length === 1 || Utils.isNullish(elems[1]) ? elems[0] : null);\n    multiselected = (elems.length >= 2 && !Utils.isNullish(elems[1]));\n    if (!Utils.isNullish(selectedElement)) {\n      // unless we're already in always set the mode of the editor to select because\n      // upon creation of a text element the editor is switched into\n      // select mode and this event fires - we need our UI to be in sync\n\n      if (!isNode) {\n        updateToolbar();\n      }\n    } // if (!Utils.isNullish(elem))\n\n    // Deal with pathedit mode\n    togglePathEditMode(isNode, elems);\n    updateContextPanel();\n    svgCanvas.runExtensions('selectedChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-selectedChanged} */ {\n      elems,\n      selectedElement,\n      multiselected\n    });\n  };\n\n  // Call when part of element is in process of changing, generally\n  // on mousemove actions like rotate, move, etc.\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:transition} elems\n   * @listens module:svgcanvas.SvgCanvas#event:transition\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementTransition\n   * @returns {undefined}\n   */\n  const elementTransition = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    const elem = elems[0];\n\n    if (!elem) {\n      return;\n    }\n\n    multiselected = (elems.length >= 2 && !Utils.isNullish(elems[1]));\n    // Only updating fields for single elements for now\n    if (!multiselected) {\n      switch (mode) {\n      case 'rotate': {\n        const ang = svgCanvas.getRotationAngle(elem);\n        $('#angle').val(ang);\n        $('#tool_reorient').toggleClass('disabled', ang === 0);\n        break;\n\n      // TODO: Update values that change on move/resize, etc\n      // } case 'select': {\n      // } case 'resize': {\n      //   break;\n      // }\n      }\n      }\n    }\n    svgCanvas.runExtensions('elementTransition', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementTransition} */ {\n      elems\n    });\n  };\n\n  /**\n   * Test whether an element is a layer or not.\n   * @param {SVGGElement} elem - The SVGGElement to test.\n   * @returns {boolean} True if the element is a layer\n   */\n  function isLayer (elem) {\n    return elem && elem.tagName === 'g' && Layer.CLASS_REGEX.test(elem.getAttribute('class'));\n  }\n\n  // called when any element has changed\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:changed} elems\n   * @listens module:svgcanvas.SvgCanvas#event:changed\n   * @fires module:svgcanvas.SvgCanvas#event:ext-elementChanged\n   * @returns {undefined}\n   */\n  const elementChanged = function (win, elems) {\n    const mode = svgCanvas.getMode();\n    if (mode === 'select') {\n      setSelectMode();\n    }\n\n    for (let i = 0; i < elems.length; ++i) {\n      const elem = elems[i];\n\n      const isSvgElem = (elem && elem.tagName === 'svg');\n      if (isSvgElem || isLayer(elem)) {\n        populateLayers();\n        // if the element changed was the svg, then it could be a resolution change\n        if (isSvgElem) {\n          updateCanvas();\n        }\n      // Update selectedElement if element is no longer part of the image.\n      // This occurs for the text elements in Firefox\n      } else if (elem && selectedElement && Utils.isNullish(selectedElement.parentNode)) {\n        // || elem && elem.tagName == \"path\" && !multiselected) { // This was added in r1430, but not sure why\n        selectedElement = elem;\n      }\n    }\n\n    editor.showSaveWarning = true;\n\n    // we update the contextual panel with potentially new\n    // positional/sizing information (we DON'T want to update the\n    // toolbar here as that creates an infinite loop)\n    // also this updates the history buttons\n\n    // we tell it to skip focusing the text control if the\n    // text element was previously in focus\n    updateContextPanel();\n\n    // In the event a gradient was flipped:\n    if (selectedElement && mode === 'select') {\n      paintBox.fill.update();\n      paintBox.stroke.update();\n    }\n\n    svgCanvas.runExtensions('elementChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementChanged} */ {\n      elems\n    });\n  };\n\n  /**\n   * @returns {undefined}\n   */\n  const zoomDone = function () {\n    updateWireFrame();\n    // updateCanvas(); // necessary?\n  };\n\n  /**\n  * @typedef {PlainObject} module:SVGEditor.BBoxObjectWithFactor (like `DOMRect`)\n  * @property {Float} x\n  * @property {Float} y\n  * @property {Float} width\n  * @property {Float} height\n  * @property {Float} [factor] Needed if width or height are 0\n  * @property {Float} [zoom]\n  * @see module:svgcanvas.SvgCanvas#event:zoomed\n  */\n\n  /**\n  * @function module:svgcanvas.SvgCanvas#zoomChanged\n  * @param {external:Window} win\n  * @param {module:svgcanvas.SvgCanvas#event:zoomed} bbox\n  * @param {boolean} autoCenter\n  * @listens module:svgcanvas.SvgCanvas#event:zoomed\n  * @returns {undefined}\n  */\n  const zoomChanged = svgCanvas.zoomChanged = function (win, bbox, autoCenter) {\n    const scrbar = 15,\n      // res = svgCanvas.getResolution(), // Currently unused\n      wArea = workarea;\n    // const canvasPos = $('#svgcanvas').position(); // Currently unused\n    const zInfo = svgCanvas.setBBoxZoom(bbox, wArea.width() - scrbar, wArea.height() - scrbar);\n    if (!zInfo) { return; }\n    const zoomlevel = zInfo.zoom,\n      bb = zInfo.bbox;\n\n    if (zoomlevel < 0.001) {\n      changeZoom({value: 0.1});\n      return;\n    }\n\n    $('#zoom').val((zoomlevel * 100).toFixed(1));\n\n    if (autoCenter) {\n      updateCanvas();\n    } else {\n      updateCanvas(false, {x: bb.x * zoomlevel + (bb.width * zoomlevel) / 2, y: bb.y * zoomlevel + (bb.height * zoomlevel) / 2});\n    }\n\n    if (svgCanvas.getMode() === 'zoom' && bb.width) {\n      // Go to select if a zoom box was drawn\n      setSelectMode();\n    }\n\n    zoomDone();\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeZoom = function (ctl) {\n    const zoomlevel = ctl.value / 100;\n    if (zoomlevel < 0.001) {\n      ctl.value = 0.1;\n      return;\n    }\n    const zoom = svgCanvas.getZoom();\n    const wArea = workarea;\n\n    zoomChanged(window, {\n      width: 0,\n      height: 0,\n      // center pt of scroll position\n      x: (wArea[0].scrollLeft + wArea.width() / 2) / zoom,\n      y: (wArea[0].scrollTop + wArea.height() / 2) / zoom,\n      zoom: zoomlevel\n    }, true);\n  };\n\n  $('#cur_context_panel').delegate('a', 'click', function () {\n    const link = $(this);\n    if (link.attr('data-root')) {\n      svgCanvas.leaveContext();\n    } else {\n      svgCanvas.setContext(link.text());\n    }\n    svgCanvas.clearSelection();\n    return false;\n  });\n\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:contextset} context\n   * @listens module:svgcanvas.SvgCanvas#event:contextset\n   * @returns {undefined}\n   */\n  const contextChanged = function (win, context) {\n    let linkStr = '';\n    if (context) {\n      let str = '';\n      linkStr = '<a href=\"#\" data-root=\"y\">' + svgCanvas.getCurrentDrawing().getCurrentLayerName() + '</a>';\n\n      $(context).parentsUntil('#svgcontent > g').andSelf().each(function () {\n        if (this.id) {\n          str += ' > ' + this.id;\n          if (this !== context) {\n            linkStr += ' > <a href=\"#\">' + this.id + '</a>';\n          } else {\n            linkStr += ' > ' + this.id;\n          }\n        }\n      });\n\n      curContext = str;\n    } else {\n      curContext = null;\n    }\n    $('#cur_context_panel').toggle(Boolean(context)).html(linkStr);\n\n    updateTitle();\n  };\n\n  /**\n  * Makes sure the current selected paint is available to work with.\n  * @returns {undefined}\n  */\n  const prepPaints = function () {\n    paintBox.fill.prep();\n    paintBox.stroke.prep();\n  };\n\n  const flyoutFuncs = {};\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const setFlyoutTitles = function () {\n    $('.tools_flyout').each(function () {\n      const shower = $('#' + this.id + '_show');\n      if (shower.data('isLibrary')) {\n        return;\n      }\n\n      const tooltips = $(this).children().map(function () {\n        return this.title;\n      }).get();\n      shower[0].title = tooltips.join(' / ');\n    });\n  };\n\n  const allHolders = {};\n  /**\n   * @param {PlainObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector\n   * @returns {undefined}\n   */\n  const setupFlyouts = function (holders) {\n    $.each(holders, function (holdSel, btnOpts) {\n      if (!allHolders[holdSel]) {\n        allHolders[holdSel] = [];\n      }\n      allHolders[holdSel].push(...btnOpts);\n\n      const buttons = $(holdSel).children().not('.tool_button_evt_handled');\n      const showSel = holdSel + '_show';\n      const shower = $(showSel);\n      let def = false;\n      buttons.addClass('tool_button tool_button_evt_handled')\n        .unbind('click mousedown mouseup') // may not be necessary\n        .each(function () {\n          // Get this button's options\n          const idSel = '#' + this.getAttribute('id');\n          const [i, opts] = Object.entries(btnOpts).find(([_, {sel}]) => {\n            return sel === idSel;\n          });\n\n          // Remember the function that goes with this ID\n          flyoutFuncs[opts.sel] = opts.fn;\n\n          if (opts.isDefault) { def = i; }\n\n          /**\n           * Clicking the icon in flyout should set this set's icon.\n           * @param {Event} ev\n           * @returns {undefined}\n           */\n          const flyoutAction = function (ev) {\n            let options = opts;\n            // Find the currently selected tool if comes from keystroke\n            if (ev.type === 'keydown') {\n              const flyoutIsSelected = $(options.parent + '_show').hasClass('tool_button_current');\n              const currentOperation = $(options.parent + '_show').attr('data-curopt');\n              Object.entries(holders[opts.parent]).some(([j, tool]) => {\n                if (tool.sel !== currentOperation) {\n                  return false;\n                }\n                if (!ev.shiftKey || !flyoutIsSelected) {\n                  options = tool;\n                } else {\n                  // If flyout is selected, allow shift key to iterate through subitems\n                  j = parseInt(j);\n                  // Use `allHolders` to include both extension `includeWith` and toolbarButtons\n                  options = allHolders[opts.parent][j + 1] ||\n                    holders[opts.parent][0];\n                }\n                return true;\n              });\n            }\n            if ($(this).hasClass('disabled')) { return false; }\n            if (toolButtonClick(showSel)) {\n              options.fn();\n            }\n            let icon;\n            if (options.icon) {\n              icon = $.getSvgIcon(options.icon, true);\n            } else {\n              icon = $(options.sel).children().eq(0).clone();\n            }\n\n            icon[0].setAttribute('width', shower.width());\n            icon[0].setAttribute('height', shower.height());\n            shower.children(':not(.flyout_arrow_horiz)').remove();\n            shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode\n            return true;\n          };\n\n          $(this).mouseup(flyoutAction);\n\n          if (opts.key) {\n            $(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);\n          }\n          return true;\n        });\n\n      if (def) {\n        shower.attr('data-curopt', btnOpts[def].sel);\n      } else if (!shower.attr('data-curopt')) {\n        // Set first as default\n        shower.attr('data-curopt', btnOpts[0].sel);\n      }\n\n      let timer;\n      const pos = $(showSel).position();\n\n      // Clicking the \"show\" icon should set the current mode\n      shower.mousedown(function (evt) {\n        if (shower.hasClass('disabled')) {\n          return false;\n        }\n        const holder = $(holdSel);\n        const l = pos.left + 34;\n        const w = holder.width() * -1;\n        const time = holder.data('shown_popop') ? 200 : 0;\n        timer = setTimeout(function () {\n          // Show corresponding menu\n          if (!shower.data('isLibrary')) {\n            holder.css('left', w).show().animate({\n              left: l\n            }, 150);\n          } else {\n            holder.css('left', l).show();\n          }\n          holder.data('shown_popop', true);\n        }, time);\n        evt.preventDefault();\n        return true;\n      }).mouseup(function (evt) {\n        clearTimeout(timer);\n        const opt = $(this).attr('data-curopt');\n        // Is library and popped up, so do nothing\n        if (shower.data('isLibrary') && $(showSel.replace('_show', '')).is(':visible')) {\n          toolButtonClick(showSel, true);\n          return;\n        }\n        if (toolButtonClick(showSel) && flyoutFuncs[opt]) {\n          flyoutFuncs[opt]();\n        }\n      });\n      // $('#tools_rect').mouseleave(function () { $('#tools_rect').fadeOut(); });\n    });\n    setFlyoutTitles();\n    setFlyoutPositions();\n  };\n\n  /**\n  * @param {string} id\n  * @param {external:jQuery} child\n  * @returns {undefined}\n  */\n  const makeFlyoutHolder = function (id, child) {\n    const div = $('<div>', {\n      class: 'tools_flyout',\n      id\n    }).appendTo('#svg_editor').append(child);\n\n    return div;\n  };\n\n  /**\n  * @param {string} elemSel\n  * @param {string} listSel\n  * @param {external:jQuery.Function} callback\n  * @param {PlainObject} opts\n  * @param {boolean} opts.dropUp\n  * @param {boolean} opts.seticon\n  * @param {boolean} opts.multiclick\n  * @todo Combine this with `addDropDown` or find other way to optimize.\n  * @returns {undefined}\n  */\n  const addAltDropDown = function (elemSel, listSel, callback, opts) {\n    const button = $(elemSel);\n    const {dropUp} = opts;\n    const list = $(listSel);\n    if (dropUp) {\n      $(elemSel).addClass('dropup');\n    }\n    list.find('li').bind('mouseup', function (...args) {\n      if (opts.seticon) {\n        setIcon('#cur_' + button[0].id, $(this).children());\n        $(this).addClass('current').siblings().removeClass('current');\n      }\n      callback.apply(this, ...args);\n    });\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      onButton = false;\n    });\n\n    // const height = list.height(); // Currently unused\n    button.bind('mousedown', function () {\n      const off = button.offset();\n      if (dropUp) {\n        off.top -= list.height();\n        off.left += 8;\n      } else {\n        off.top += button.height();\n      }\n      list.offset(off);\n\n      if (!button.hasClass('down')) {\n        list.show();\n        onButton = true;\n      } else {\n        // CSS position must be reset for Webkit\n        list.hide();\n        list.css({top: 0, left: 0});\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    if (opts.multiclick) {\n      list.mousedown(function () {\n        onButton = true;\n      });\n    }\n  };\n\n  const extsPreLang = [];\n  /**\n   * @param {external:Window} win\n   * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext\n   * @listens module:svgcanvas.SvgCanvas#event:extension_added\n   * @returns {Promise|undefined} Resolves to `undefined`\n   */\n  const extAdded = async function (win, ext) {\n    if (!ext) {\n      return undefined;\n    }\n    let cbCalled = false;\n    let resizeDone = false;\n\n    if (ext.langReady) {\n      if (editor.langChanged) { // We check for this since the \"lang\" pref could have been set by storage\n        const lang = $.pref('lang');\n        await ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n        loadedExtensionNames.push(ext.name);\n      } else {\n        extsPreLang.push(ext);\n      }\n    }\n\n    /**\n     * Clear resize timer if present and if not previously performed,\n     *   perform an icon resize.\n     * @returns {undefined}\n     */\n    function prepResize () {\n      if (resizeTimer) {\n        clearTimeout(resizeTimer);\n        resizeTimer = null;\n      }\n      if (!resizeDone) {\n        resizeTimer = setTimeout(function () {\n          resizeDone = true;\n          setIconSize($.pref('iconsize'));\n        }, 50);\n      }\n    }\n\n    /**\n    *\n    * @returns {undefined}\n    */\n    const runCallback = function () {\n      if (ext.callback && !cbCalled) {\n        cbCalled = true;\n        ext.callback.call(editor);\n      }\n    };\n\n    const btnSelects = [];\n\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ContextTool\n    * @property {string} panel The ID of the existing panel to which the tool is being added. Required.\n    * @property {string} id The ID of the actual tool element. Required.\n    * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"change\", external:jQuery.Function>} events DOM event names keyed to associated functions. Example: `{change () { alert('Option was changed') } }`. \"change\" event is one specifically handled for the \"button-select\" type. Required.\n    * @property {string} title The tooltip text that will appear when the user hovers over the tool. Required.\n    * @property {\"tool_button\"|\"select\"|\"button-select\"|\"input\"|string} type The type of tool being added. Expected.\n    * @property {PlainObject.<string, string>} [options] List of options and their labels for select tools. Example: `{1: 'One', 2: 'Two', all: 'All' }`. Required by \"select\" tools.\n    * @property {string} [container_id] The ID to be given to the tool's container element.\n    * @property {string} [defval] Default value\n    * @property {string|Integer} [colnum] Added as part of the option list class.\n    * @property {string} [label] Label associated with the tool, visible in the UI\n    * @property {Integer} [size] Value of the \"size\" attribute of the tool input\n    * @property {module:jQuerySpinButton.SpinButtonConfig} [spindata] When added to a tool of type \"input\", this tool becomes a \"spinner\" which allows the number to be in/decreased.\n    */\n    if (ext.context_tools) {\n      $.each(ext.context_tools, function (i, tool) {\n        // Add select tool\n        const contId = tool.container_id ? (' id=\"' + tool.container_id + '\"') : '';\n\n        let panel = $('#' + tool.panel);\n        // create the panel if it doesn't exist\n        if (!panel.length) {\n          panel = $('<div>', {id: tool.panel}).appendTo('#tools_top');\n        }\n\n        let html;\n        // TODO: Allow support for other types, or adding to existing tool\n        switch (tool.type) {\n        case 'tool_button': {\n          html = '<div class=\"tool_button\">' + tool.id + '</div>';\n          const div = $(html).appendTo(panel);\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              $(div).bind(evt, func);\n            });\n          }\n          break;\n        } case 'select': {\n          html = '<label' + contId + '>' +\n            '<select id=\"' + tool.id + '\">';\n          $.each(tool.options, function (val, text) {\n            const sel = (val === tool.defval) ? ' selected' : '';\n            html += '<option value=\"' + val + '\"' + sel + '>' + text + '</option>';\n          });\n          html += '</select></label>';\n          // Creates the tool, hides & adds it, returns the select element\n          const sel = $(html).appendTo(panel).find('select');\n\n          $.each(tool.events, function (evt, func) {\n            $(sel).bind(evt, func);\n          });\n          break;\n        } case 'button-select': {\n          html = '<div id=\"' + tool.id + '\" class=\"dropdown toolset\" title=\"' + tool.title + '\">' +\n            '<div id=\"cur_' + tool.id + '\" class=\"icon_label\"></div><button></button></div>';\n\n          const list = $('<ul id=\"' + tool.id + '_opts\"></ul>').appendTo('#option_lists');\n\n          if (tool.colnum) {\n            list.addClass('optcols' + tool.colnum);\n          }\n\n          // Creates the tool, hides & adds it, returns the select element\n          /* const dropdown = */ $(html).appendTo(panel).children();\n\n          btnSelects.push({\n            elem: ('#' + tool.id),\n            list: ('#' + tool.id + '_opts'),\n            title: tool.title,\n            callback: tool.events.change,\n            cur: ('#cur_' + tool.id)\n          });\n\n          break;\n        } case 'input': {\n          html = '<label' + contId + '>' +\n            '<span id=\"' + tool.id + '_label\">' +\n            tool.label + ':</span>' +\n            '<input id=\"' + tool.id + '\" title=\"' + tool.title +\n            '\" size=\"' + (tool.size || '4') +\n            '\" value=\"' + (tool.defval || '') + '\" type=\"text\"/></label>';\n\n          // Creates the tool, hides & adds it, returns the select element\n\n          // Add to given tool.panel\n          const inp = $(html).appendTo(panel).find('input');\n\n          if (tool.spindata) {\n            inp.SpinButton(tool.spindata);\n          }\n\n          if (tool.events) {\n            $.each(tool.events, function (evt, func) {\n              inp.bind(evt, func);\n            });\n          }\n          break;\n        } default:\n          break;\n        }\n      });\n    }\n\n    const {svgicons} = ext;\n    if (ext.buttons) {\n      const fallbackObj = {},\n        placementObj = {},\n        holders = {};\n\n      /**\n      * @typedef {GenericArray} module:SVGEditor.KeyArray\n      * @property {string} 0 The key to bind (on `keydown`)\n      * @property {boolean} 1 Whether to `preventDefault` on the `keydown` event\n      * @property {boolean} 2 Not apparently in use (NoDisableInInput)\n      */\n      /**\n       * @typedef {string|module:SVGEditor.KeyArray} module:SVGEditor.Key\n       */\n      /**\n      * @typedef {PlainObject} module:SVGEditor.Button\n      * @property {string} id A unique identifier for this button. If SVG icons are used, this must match the ID used in the icon file. Required.\n      * @property {\"mode_flyout\"|\"mode\"|\"context\"|\"app_menu\"} type Type of button. Required.\n      * @property {string} title The tooltip text that will appear when the user hovers over the icon. Required.\n      * @property {PlainObject.<string, external:jQuery.Function>|PlainObject.<\"click\", external:jQuery.Function>} events DOM event names with associated functions. Example: `{click () { alert('Button was clicked') } }`. Click is used with `includeWith` and `type` of \"mode_flyout\" (and \"mode\"); any events may be added if `list` is not present. Expected.\n      * @property {string} panel The ID of the context panel to be included, if type is \"context\". Required only if type is \"context\".\n      * @property {string} icon The file path to the raster version of the icon image source. Required only if no `svgicons` is supplied from [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse}.\n      * @property {string} [svgicon] If absent, will utilize the button \"id\"; used to set \"placement\" on the `svgIcons` call\n      * @property {string} [list] Points to the \"id\" of a `context_tools` item of type \"button-select\" into which the button will be added as a panel list item\n      * @property {Integer} [position] The numeric index for placement; defaults to last position (as of the time of extension addition) if not present. For use with {@link http://api.jquery.com/eq/}.\n      * @property {boolean} [isDefault] Whether or not the button is the default. Used with `list`.\n      * @property {PlainObject} [includeWith] Object with flyout menu data\n      * @property {boolean} [includeWith.isDefault] Indicates whether button is default in flyout list or not.\n      * @property {string} includeWith.button jQuery selector of the existing button to be joined. Example: '#tool_line'. Required if `includeWith` is used.\n      * @property {\"last\"|Integer} [includeWith.position] Position of icon in flyout list; will be added to end if not indicated. Integer is for use with {@link http://api.jquery.com/eq/}.\n      * @property {module:SVGEditor.Key} [key] The key to bind to the button\n      */\n      // Add buttons given by extension\n      $.each(ext.buttons, function (i, /** @type {module:SVGEditor.Button} */ btn) {\n        let {id} = btn;\n        let num = i;\n        // Give button a unique ID\n        while ($('#' + id).length) {\n          id = btn.id + '_' + (++num);\n        }\n\n        let icon;\n        if (!svgicons) {\n          icon = $('<img src=\"' + btn.icon + '\">');\n        } else {\n          fallbackObj[id] = btn.icon;\n          const svgicon = btn.svgicon || btn.id;\n          if (btn.type === 'app_menu') {\n            placementObj['#' + id + ' > div'] = svgicon;\n          } else {\n            placementObj['#' + id] = svgicon;\n          }\n        }\n\n        let cls, parent;\n\n        // Set button up according to its type\n        switch (btn.type) {\n        case 'mode_flyout':\n        case 'mode':\n          cls = 'tool_button';\n          parent = '#tools_left';\n          break;\n        case 'context':\n          cls = 'tool_button';\n          parent = '#' + btn.panel;\n          // create the panel if it doesn't exist\n          if (!$(parent).length) {\n            $('<div>', {id: btn.panel}).appendTo('#tools_top');\n          }\n          break;\n        case 'app_menu':\n          cls = '';\n          parent = '#main_menu ul';\n          break;\n        }\n        let flyoutHolder, showBtn, refData, refBtn;\n        const button = $((btn.list || btn.type === 'app_menu') ? '<li/>' : '<div/>')\n          .attr('id', id)\n          .attr('title', btn.title)\n          .addClass(cls);\n        if (!btn.includeWith && !btn.list) {\n          if ('position' in btn) {\n            if ($(parent).children().eq(btn.position).length) {\n              $(parent).children().eq(btn.position).before(button);\n            } else {\n              $(parent).children().last().before(button);\n            }\n          } else {\n            button.appendTo(parent);\n          }\n\n          if (btn.type === 'mode_flyout') {\n          // Add to flyout menu / make flyout menu\n            // const opts = btn.includeWith;\n            // // opts.button, default, position\n            refBtn = $(button);\n\n            flyoutHolder = refBtn.parent();\n            // Create a flyout menu if there isn't one already\n            let tlsId;\n            if (!refBtn.parent().hasClass('tools_flyout')) {\n              // Create flyout placeholder\n              tlsId = refBtn[0].id.replace('tool_', 'tools_');\n              showBtn = refBtn.clone()\n                .attr('id', tlsId + '_show')\n                .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n              refBtn.before(showBtn);\n\n              // Create a flyout div\n              flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n              flyoutHolder.data('isLibrary', true);\n              showBtn.data('isLibrary', true);\n            }\n            // refData = Actions.getButtonData(opts.button);\n\n            placementObj['#' + tlsId + '_show'] = btn.id;\n            // TODO: Find way to set the current icon using the iconloader if this is not default\n\n            // Include data for extension button as well as ref button\n            /* curH = */ holders['#' + flyoutHolder[0].id] = [{\n              sel: '#' + id,\n              fn: btn.events.click,\n              icon: btn.id,\n              // key: btn.key,\n              isDefault: true\n            }]; // , refData\n            //\n            // // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n            //\n            // const pos = ('position' in opts)?opts.position:'last';\n            // const len = flyoutHolder.children().length;\n            //\n            // // Add at given position or end\n            // if (!isNaN(pos) && pos >= 0 && pos < len) {\n            //   flyoutHolder.children().eq(pos).before(button);\n            // } else {\n            //   flyoutHolder.append(button);\n            //   curH.reverse();\n            // }\n          } else if (btn.type === 'app_menu') {\n            button.append('<div>').append(btn.title);\n          }\n        } else if (btn.list) {\n          // Add button to list\n          button.addClass('push_button');\n          $('#' + btn.list + '_opts').append(button);\n          if (btn.isDefault) {\n            $('#cur_' + btn.list).append(button.children().clone());\n            const svgicon = btn.svgicon || btn.id;\n            placementObj['#cur_' + btn.list] = svgicon;\n          }\n        } else if (btn.includeWith) {\n          // Add to flyout menu / make flyout menu\n          const opts = btn.includeWith;\n          // opts.button, default, position\n          refBtn = $(opts.button);\n\n          flyoutHolder = refBtn.parent();\n          // Create a flyout menu if there isn't one already\n          let tlsId;\n          if (!refBtn.parent().hasClass('tools_flyout')) {\n            // Create flyout placeholder\n            tlsId = refBtn[0].id.replace('tool_', 'tools_');\n            showBtn = refBtn.clone()\n              .attr('id', tlsId + '_show')\n              .append($('<div>', {class: 'flyout_arrow_horiz'}));\n\n            refBtn.before(showBtn);\n            // Create a flyout div\n            flyoutHolder = makeFlyoutHolder(tlsId, refBtn);\n          }\n\n          refData = Actions.getButtonData(opts.button);\n\n          if (opts.isDefault) {\n            placementObj['#' + tlsId + '_show'] = btn.id;\n          }\n          // TODO: Find way to set the current icon using the iconloader if this is not default\n\n          // Include data for extension button as well as ref button\n          const curH = holders['#' + flyoutHolder[0].id] = [{\n            sel: '#' + id,\n            fn: btn.events.click,\n            icon: btn.id,\n            key: btn.key,\n            isDefault: Boolean(btn.includeWith && btn.includeWith.isDefault)\n          }, refData];\n\n          // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}\n\n          const pos = ('position' in opts) ? opts.position : 'last';\n          const len = flyoutHolder.children().length;\n\n          // Add at given position or end\n          if (!isNaN(pos) && pos >= 0 && pos < len) {\n            flyoutHolder.children().eq(pos).before(button);\n          } else {\n            flyoutHolder.append(button);\n            curH.reverse();\n          }\n        }\n\n        if (!svgicons) {\n          button.append(icon);\n        }\n\n        if (!btn.list) {\n          // Add given events to button\n          $.each(btn.events, function (name, func) {\n            if (name === 'click' && btn.type === 'mode') {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map extension click events as well\n              if (isTouch() && name === 'click') {\n                name = 'mousedown';\n              }\n              if (btn.includeWith) {\n                button.bind(name, func);\n              } else {\n                button.bind(name, function () {\n                  if (toolButtonClick(button)) {\n                    func();\n                  }\n                });\n              }\n              if (btn.key) {\n                $(document).bind('keydown', btn.key, func);\n                if (btn.title) {\n                  button.attr('title', btn.title + ' [' + btn.key + ']');\n                }\n              }\n            } else {\n              button.bind(name, func);\n            }\n          });\n        }\n\n        setupFlyouts(holders);\n      });\n\n      $.each(btnSelects, function () {\n        addAltDropDown(this.elem, this.list, this.callback, {seticon: true});\n      });\n\n      if (svgicons) {\n        return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n          $.svgIcons(svgicons, {\n            w: 24, h: 24,\n            id_match: false,\n            no_img: (!isWebkit()),\n            fallback: fallbackObj,\n            placement: placementObj,\n            callback (icons) {\n              // Non-ideal hack to make the icon match the current size\n              // if (curPrefs.iconsize && curPrefs.iconsize !== 'm') {\n              if ($.pref('iconsize') !== 'm') {\n                prepResize();\n              }\n              runCallback();\n              resolve();\n            }\n          });\n        });\n      }\n    }\n    return runCallback();\n  };\n\n  /**\n  * @param {string} color\n  * @param {Float} opac\n  * @param {string} type\n  * @returns {module:jGraduate~Paint}\n  */\n  const getPaint = function (color, opac, type) {\n    // update the editor's fill paint\n    const opts = {alpha: opac};\n    if (color.startsWith('url(#')) {\n      let refElem = svgCanvas.getRefElem(color);\n      if (refElem) {\n        refElem = refElem.cloneNode(true);\n      } else {\n        refElem = $('#' + type + '_color defs *')[0];\n      }\n      opts[refElem.tagName] = refElem;\n    } else if (color.startsWith('#')) {\n      opts.solidColor = color.substr(1);\n    } else {\n      opts.solidColor = 'none';\n    }\n    return new $.jGraduate.Paint(opts);\n  };\n\n  // $('#text').focus(function () { textBeingEntered = true; });\n  // $('#text').blur(function () { textBeingEntered = false; });\n\n  // bind the selected event to our function that handles updates to the UI\n  svgCanvas.bind('selected', selectedChanged);\n  svgCanvas.bind('transition', elementTransition);\n  svgCanvas.bind('changed', elementChanged);\n  svgCanvas.bind('saved', saveHandler);\n  svgCanvas.bind('exported', exportHandler);\n  svgCanvas.bind('exportedPDF', function (win, data) {\n    if (!data.output) { // Ignore Chrome\n      return;\n    }\n    const {exportWindowName} = data;\n    if (exportWindowName) {\n      exportWindow = window.open('', exportWindowName); // A hack to get the window via JSON-able name without opening a new one\n    }\n    if (!exportWindow || exportWindow.closed) {\n      /* await */ $.alert(uiStrings.notification.popupWindowBlocked);\n      return;\n    }\n    exportWindow.location.href = data.output;\n  });\n  svgCanvas.bind('zoomed', zoomChanged);\n  svgCanvas.bind('zoomDone', zoomDone);\n  svgCanvas.bind(\n    'updateCanvas',\n    /**\n     * @param {external:Window} win\n     * @param {PlainObject} centerInfo\n     * @param {false} centerInfo.center\n     * @param {module:math.XYObject} centerInfo.newCtr\n     * @listens module:svgcanvas.SvgCanvas#event:updateCanvas\n     * @returns {undefined}\n     */\n    function (win, {center, newCtr}) {\n      updateCanvas(center, newCtr);\n    }\n  );\n  svgCanvas.bind('contextset', contextChanged);\n  svgCanvas.bind('extension_added', extAdded);\n  svgCanvas.textActions.setInputElem($('#text')[0]);\n\n  let str = '<div class=\"palette_item\" data-rgb=\"none\"></div>';\n  $.each(palette, function (i, item) {\n    str += '<div class=\"palette_item\" style=\"background-color: ' + item +\n      ';\" data-rgb=\"' + item + '\"></div>';\n  });\n  $('#palette').append(str);\n\n  // Set up editor background functionality\n  // TODO add checkerboard as \"pattern\"\n  const colorBlocks = ['#FFF', '#888', '#000']; // ,'url(data:image/gif;base64,R0lGODlhEAAQAIAAAP%2F%2F%2F9bW1iH5BAAAAAAALAAAAAAQABAAAAIfjG%2Bgq4jM3IFLJgpswNly%2FXkcBpIiVaInlLJr9FZWAQA7)'];\n  str = '';\n  $.each(colorBlocks, function () {\n    str += '<div class=\"color_block\" style=\"background-color:' + this + ';\"></div>';\n  });\n  $('#bg_blocks').append(str);\n  const blocks = $('#bg_blocks div');\n  const curBg = 'cur_background';\n  blocks.each(function () {\n    const blk = $(this);\n    blk.click(function () {\n      blocks.removeClass(curBg);\n      $(this).addClass(curBg);\n    });\n  });\n\n  setBackground($.pref('bkgd_color'), $.pref('bkgd_url'));\n\n  $('#image_save_opts input').val([$.pref('img_save')]);\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeRectRadius = function (ctl) {\n    svgCanvas.setRectRadius(ctl.value);\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeFontSize = function (ctl) {\n    svgCanvas.setFontSize(ctl.value);\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeStrokeWidth = function (ctl) {\n    let val = ctl.value;\n    if (val === 0 && selectedElement && ['line', 'polyline'].includes(selectedElement.nodeName)) {\n      val = ctl.value = 1;\n    }\n    svgCanvas.setStrokeWidth(val);\n  };\n\n  /**\n  * @implements {module:jQuerySpinButton.ValueCallback}\n  */\n  const changeRotationAngle = function (ctl) {\n    svgCanvas.setRotationAngle(ctl.value);\n    $('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);\n  };\n\n  /**\n  * @param {external:jQuery.fn.SpinButton} ctl Spin Button\n  * @param {string} [val=ctl.value]\n  * @returns {undefined}\n  */\n  const changeOpacity = function (ctl, val) {\n    if (Utils.isNullish(val)) { val = ctl.value; }\n    $('#group_opacity').val(val);\n    if (!ctl || !ctl.handle) {\n      $('#opac_slider').slider('option', 'value', val);\n    }\n    svgCanvas.setOpacity(val / 100);\n  };\n\n  /**\n  * @param {external:jQuery.fn.SpinButton} ctl Spin Button\n  * @param {string} [val=ctl.value]\n  * @param {boolean} noUndo\n  * @returns {undefined}\n  */\n  const changeBlur = function (ctl, val, noUndo) {\n    if (Utils.isNullish(val)) { val = ctl.value; }\n    $('#blur').val(val);\n    let complete = false;\n    if (!ctl || !ctl.handle) {\n      $('#blur_slider').slider('option', 'value', val);\n      complete = true;\n    }\n    if (noUndo) {\n      svgCanvas.setBlurNoUndo(val);\n    } else {\n      svgCanvas.setBlur(val, complete);\n    }\n  };\n\n  $('#stroke_style').change(function () {\n    svgCanvas.setStrokeAttr('stroke-dasharray', $(this).val());\n    operaRepaint();\n  });\n\n  $('#stroke_linejoin').change(function () {\n    svgCanvas.setStrokeAttr('stroke-linejoin', $(this).val());\n    operaRepaint();\n  });\n\n  // Lose focus for select elements when changed (Allows keyboard shortcuts to work better)\n  $('select').change(function () { $(this).blur(); });\n\n  // fired when user wants to move elements to another layer\n  let promptMoveLayerOnce = false;\n  $('#selLayerNames').change(async function () {\n    const destLayer = this.options[this.selectedIndex].value;\n    const confirmStr = uiStrings.notification.QmoveElemsToLayer.replace('%s', destLayer);\n    /**\n    * @param {boolean} ok\n    * @returns {undefined}\n    */\n    const moveToLayer = function (ok) {\n      if (!ok) { return; }\n      promptMoveLayerOnce = true;\n      svgCanvas.moveSelectedToLayer(destLayer);\n      svgCanvas.clearSelection();\n      populateLayers();\n    };\n    if (destLayer) {\n      if (promptMoveLayerOnce) {\n        moveToLayer(true);\n      } else {\n        const ok = await $.confirm(confirmStr);\n        if (!ok) {\n          return;\n        }\n        moveToLayer(true);\n      }\n    }\n  });\n\n  $('#font_family').change(function () {\n    svgCanvas.setFontFamily(this.value);\n  });\n\n  $('#seg_type').change(function () {\n    svgCanvas.setSegType($(this).val());\n  });\n\n  $('#text').bind('keyup input', function () {\n    svgCanvas.setTextContent(this.value);\n  });\n\n  $('#image_url').change(function () {\n    setImageURL(this.value);\n  });\n\n  $('#link_url').change(function () {\n    if (this.value.length) {\n      svgCanvas.setLinkURL(this.value);\n    } else {\n      svgCanvas.removeHyperlink();\n    }\n  });\n\n  $('#g_title').change(function () {\n    svgCanvas.setGroupTitle(this.value);\n  });\n\n  $('.attr_changer').change(function () {\n    const attr = this.getAttribute('data-attr');\n    let val = this.value;\n    const valid = isValidUnit(attr, val, selectedElement);\n\n    if (!valid) {\n      this.value = selectedElement.getAttribute(attr);\n      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);\n      return false;\n    }\n\n    if (attr !== 'id' && attr !== 'class') {\n      if (isNaN(val)) {\n        val = svgCanvas.convertToNum(attr, val);\n      } else if (curConfig.baseUnit !== 'px') {\n        // Convert unitless value to one with given unit\n\n        const unitData = getTypeMap();\n\n        if (selectedElement[attr] || svgCanvas.getMode() === 'pathedit' || attr === 'x' || attr === 'y') {\n          val *= unitData[curConfig.baseUnit];\n        }\n      }\n    }\n\n    // if the user is changing the id, then de-select the element first\n    // change the ID, then re-select it with the new ID\n    if (attr === 'id') {\n      const elem = selectedElement;\n      svgCanvas.clearSelection();\n      elem.id = val;\n      svgCanvas.addToSelection([elem], true);\n    } else {\n      svgCanvas.changeSelectedAttribute(attr, val);\n    }\n    this.blur();\n    return true;\n  });\n\n  // Prevent selection of elements when shift-clicking\n  $('#palette').mouseover(function () {\n    const inp = $('<input type=\"hidden\">');\n    $(this).append(inp);\n    inp.focus().remove();\n  });\n\n  $('.palette_item').mousedown(function (evt) {\n    // shift key or right click for stroke\n    const picker = evt.shiftKey || evt.button === 2 ? 'stroke' : 'fill';\n    let color = $(this).data('rgb');\n    let paint;\n\n    // Webkit-based browsers returned 'initial' here for no stroke\n    if (color === 'none' || color === 'transparent' || color === 'initial') {\n      color = 'none';\n      paint = new $.jGraduate.Paint();\n    } else {\n      paint = new $.jGraduate.Paint({alpha: 100, solidColor: color.substr(1)});\n    }\n\n    paintBox[picker].setPaint(paint);\n    svgCanvas.setColor(picker, color);\n\n    if (color !== 'none' && svgCanvas.getPaintOpacity(picker) !== 1) {\n      svgCanvas.setPaintOpacity(picker, 1.0);\n    }\n    updateToolButtonState();\n  }).bind('contextmenu', function (e) { e.preventDefault(); });\n\n  $('#toggle_stroke_tools').on('click', function () {\n    $('#tools_bottom').toggleClass('expanded');\n  });\n\n  (function () {\n    const wArea = workarea[0];\n\n    let lastX = null, lastY = null,\n      panning = false, keypan = false;\n\n    $('#svgcanvas').bind('mousemove mouseup', function (evt) {\n      if (panning === false) { return true; }\n\n      wArea.scrollLeft -= (evt.clientX - lastX);\n      wArea.scrollTop -= (evt.clientY - lastY);\n\n      lastX = evt.clientX;\n      lastY = evt.clientY;\n\n      if (evt.type === 'mouseup') { panning = false; }\n      return false;\n    }).mousedown(function (evt) {\n      if (evt.button === 1 || keypan === true) {\n        panning = true;\n        lastX = evt.clientX;\n        lastY = evt.clientY;\n        return false;\n      }\n      return true;\n    });\n\n    $(window).mouseup(function () {\n      panning = false;\n    });\n\n    $(document).bind('keydown', 'space', function (evt) {\n      svgCanvas.spaceKey = keypan = true;\n      evt.preventDefault();\n    }).bind('keyup', 'space', function (evt) {\n      evt.preventDefault();\n      svgCanvas.spaceKey = keypan = false;\n    }).bind('keydown', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomOutIcon);\n      }\n    }).bind('keyup', 'shift', function (evt) {\n      if (svgCanvas.getMode() === 'zoom') {\n        workarea.css('cursor', zoomInIcon);\n      }\n    });\n\n    /**\n    * @param {boolean} active\n    * @returns {undefined}\n    */\n    editor.setPanning = function (active) {\n      svgCanvas.spaceKey = keypan = active;\n    };\n  }());\n\n  (function () {\n    const button = $('#main_icon');\n    const overlay = $('#main_icon span');\n    const list = $('#main_menu');\n\n    let onButton = false;\n    let height = 0;\n    let jsHover = true;\n    let setClick = false;\n\n    /*\n    // Currently unused\n    const hideMenu = function () {\n      list.fadeOut(200);\n    };\n    */\n\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('buttondown');\n        // do not hide if it was the file input as that input needs to be visible\n        // for its change event to fire\n        if (evt.target.tagName !== 'INPUT') {\n          list.fadeOut(200);\n        } else if (!setClick) {\n          setClick = true;\n          $(evt.target).click(function () {\n            list.css('margin-left', '-9999px').show();\n          });\n        }\n      }\n      onButton = false;\n    }).mousedown(function (evt) {\n      // $('.contextMenu').hide();\n      const islib = $(evt.target).closest('div.tools_flyout, .contextMenu').length;\n      if (!islib) {\n        $('.tools_flyout:visible,.contextMenu').fadeOut(250);\n      }\n    });\n\n    overlay.bind('mousedown', function () {\n      if (!button.hasClass('buttondown')) {\n        // Margin must be reset in case it was changed before;\n        list.css('margin-left', 0).show();\n        if (!height) {\n          height = list.height();\n        }\n        // Using custom animation as slideDown has annoying 'bounce effect'\n        list.css('height', 0).animate({\n          height\n        }, 200);\n        onButton = true;\n      } else {\n        list.fadeOut(200);\n      }\n      button.toggleClass('buttondown buttonup');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n\n    const listItems = $('#main_menu li');\n\n    // Check if JS method of hovering needs to be used (Webkit bug)\n    listItems.mouseover(function () {\n      jsHover = ($(this).css('background-color') === 'rgba(0, 0, 0, 0)');\n\n      listItems.unbind('mouseover');\n      if (jsHover) {\n        listItems.mouseover(function () {\n          this.style.backgroundColor = '#FFC';\n        }).mouseout(function () {\n          this.style.backgroundColor = 'transparent';\n          return true;\n        });\n      }\n    });\n  }());\n  // Made public for UI customization.\n  // TODO: Group UI functions into a public editor.ui interface.\n  /**\n   * See {@link http://api.jquery.com/bind/#bind-eventType-eventData-handler}\n   * @callback module:SVGEditor.DropDownCallback\n   * @param {external:jQuery.Event} ev See {@link http://api.jquery.com/Types/#Event}\n   * @listens external:jQuery.Event\n   * @returns {undefined|boolean} Calls `preventDefault()` and `stopPropagation()`\n  */\n  /**\n   * @param {Element|string} elem DOM Element or selector\n   * @param {module:SVGEditor.DropDownCallback} callback Mouseup callback\n   * @param {boolean} dropUp\n   * @returns {undefined}\n  */\n  editor.addDropDown = function (elem, callback, dropUp) {\n    if (!$(elem).length) { return; } // Quit if called on non-existent element\n    const button = $(elem).find('button');\n    const list = $(elem).find('ul').attr('id', $(elem)[0].id + '-list');\n    if (dropUp) {\n      $(elem).addClass('dropup');\n    } else {\n      // Move list to place where it can overflow container\n      $('#option_lists').append(list);\n    }\n    list.find('li').bind('mouseup', callback);\n\n    let onButton = false;\n    $(window).mouseup(function (evt) {\n      if (!onButton) {\n        button.removeClass('down');\n        list.hide();\n      }\n      onButton = false;\n    });\n\n    button.bind('mousedown', function () {\n      if (!button.hasClass('down')) {\n        if (!dropUp) {\n          const pos = $(elem).position();\n          list.css({\n            top: pos.top + 24,\n            left: pos.left - 10\n          });\n        }\n        list.show();\n        onButton = true;\n      } else {\n        list.hide();\n      }\n      button.toggleClass('down');\n    }).hover(function () {\n      onButton = true;\n    }).mouseout(function () {\n      onButton = false;\n    });\n  };\n\n  editor.addDropDown('#font_family_dropdown', function () {\n    $('#font_family').val($(this).text()).change();\n  });\n\n  editor.addDropDown('#opacity_dropdown', function () {\n    if ($(this).find('div').length) { return; }\n    const perc = parseInt($(this).text().split('%')[0]);\n    changeOpacity(false, perc);\n  }, true);\n\n  // For slider usage, see: http://jqueryui.com/demos/slider/\n  $('#opac_slider').slider({\n    start () {\n      $('#opacity_dropdown li:not(.special)').hide();\n    },\n    stop () {\n      $('#opacity_dropdown li').show();\n      $(window).mouseup();\n    },\n    slide (evt, ui) {\n      changeOpacity(ui);\n    }\n  });\n\n  editor.addDropDown('#blur_dropdown', $.noop);\n\n  let slideStart = false;\n  $('#blur_slider').slider({\n    max: 10,\n    step: 0.1,\n    stop (evt, ui) {\n      slideStart = false;\n      changeBlur(ui);\n      $('#blur_dropdown li').show();\n      $(window).mouseup();\n    },\n    start () {\n      slideStart = true;\n    },\n    slide (evt, ui) {\n      changeBlur(ui, null, slideStart);\n    }\n  });\n\n  editor.addDropDown('#zoom_dropdown', function () {\n    const item = $(this);\n    const val = item.data('val');\n    if (val) {\n      zoomChanged(window, val);\n    } else {\n      changeZoom({value: parseFloat(item.text())});\n    }\n  }, true);\n\n  addAltDropDown('#stroke_linecap', '#linecap_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#stroke_linejoin', '#linejoin_opts', function () {\n    setStrokeOpt(this, true);\n  }, {dropUp: true});\n\n  addAltDropDown('#tool_position', '#position_opts', function () {\n    const letter = this.id.replace('tool_pos', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, 'page');\n  }, {multiclick: true});\n\n  /*\n\n  When a flyout icon is selected\n    (if flyout) {\n    - Change the icon\n    - Make pressing the button run its stuff\n    }\n    - Run its stuff\n\n  When its shortcut key is pressed\n    - If not current in list, do as above\n    , else:\n    - Just run its stuff\n\n  */\n\n  // Unfocus text input when workarea is mousedowned.\n  (function () {\n    let inp;\n    /**\n    *\n    * @returns {undefined}\n    */\n    const unfocus = function () {\n      $(inp).blur();\n    };\n\n    $('#svg_editor').find('button, select, input:not(#text)').focus(function () {\n      inp = this; // eslint-disable-line consistent-this\n      uiContext = 'toolbars';\n      workarea.mousedown(unfocus);\n    }).blur(function () {\n      uiContext = 'canvas';\n      workarea.unbind('mousedown', unfocus);\n      // Go back to selecting text if in textedit mode\n      if (svgCanvas.getMode() === 'textedit') {\n        $('#text').focus();\n      }\n    });\n  }());\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickFHPath = function () {\n    if (toolButtonClick('#tool_fhpath')) {\n      svgCanvas.setMode('fhpath');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickLine = function () {\n    if (toolButtonClick('#tool_line')) {\n      svgCanvas.setMode('line');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickSquare = function () {\n    if (toolButtonClick('#tool_square')) {\n      svgCanvas.setMode('square');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickRect = function () {\n    if (toolButtonClick('#tool_rect')) {\n      svgCanvas.setMode('rect');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickFHRect = function () {\n    if (toolButtonClick('#tool_fhrect')) {\n      svgCanvas.setMode('fhrect');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickCircle = function () {\n    if (toolButtonClick('#tool_circle')) {\n      svgCanvas.setMode('circle');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickEllipse = function () {\n    if (toolButtonClick('#tool_ellipse')) {\n      svgCanvas.setMode('ellipse');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickFHEllipse = function () {\n    if (toolButtonClick('#tool_fhellipse')) {\n      svgCanvas.setMode('fhellipse');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickImage = function () {\n    if (toolButtonClick('#tool_image')) {\n      svgCanvas.setMode('image');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      svgCanvas.setMode('zoom');\n      workarea.css('cursor', zoomInIcon);\n    }\n  };\n\n  /**\n  * @param {Float} multiplier\n  * @returns {undefined}\n  */\n  const zoomImage = function (multiplier) {\n    const res = svgCanvas.getResolution();\n    multiplier = multiplier ? res.zoom * multiplier : 1;\n    // setResolution(res.w * multiplier, res.h * multiplier, true);\n    $('#zoom').val(multiplier * 100);\n    svgCanvas.setZoom(multiplier);\n    zoomDone();\n    updateCanvas(true);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const dblclickZoom = function () {\n    if (toolButtonClick('#tool_zoom')) {\n      zoomImage();\n      setSelectMode();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickText = function () {\n    if (toolButtonClick('#tool_text')) {\n      svgCanvas.setMode('text');\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickPath = function () {\n    if (toolButtonClick('#tool_path')) {\n      svgCanvas.setMode('path');\n    }\n  };\n\n  /**\n  * Delete is a contextual tool that only appears in the ribbon if\n  * an element has been selected.\n  * @returns {undefined}\n  */\n  const deleteSelected = function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      svgCanvas.deleteSelectedElements();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const cutSelected = function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      svgCanvas.cutSelectedElements();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const copySelected = function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      svgCanvas.copySelectedElements();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const pasteInCenter = function () {\n    const zoom = svgCanvas.getZoom();\n    const x = (workarea[0].scrollLeft + workarea.width() / 2) / zoom - svgCanvas.contentW;\n    const y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;\n    svgCanvas.pasteElements('point', x, y);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const moveToTopSelected = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.moveToTopSelectedElement();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const moveToBottomSelected = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.moveToBottomSelectedElement();\n    }\n  };\n\n  /**\n  * @param {\"Up\"|\"Down\"} dir\n  * @returns {undefined}\n  */\n  const moveUpDownSelected = function (dir) {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.moveUpDownSelected(dir);\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const convertToPath = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      svgCanvas.convertToPath();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const reorientPath = function () {\n    if (!Utils.isNullish(selectedElement)) {\n      path.reorient();\n    }\n  };\n\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const makeHyperlink = async function () {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      const url = await $.prompt(uiStrings.notification.enterNewLinkURL, 'http://');\n      if (url) {\n        svgCanvas.makeHyperlink(url);\n      }\n    }\n  };\n\n  /**\n  * @param {Float} dx\n  * @param {Float} dy\n  * @returns {undefined}\n  */\n  const moveSelected = function (dx, dy) {\n    if (!Utils.isNullish(selectedElement) || multiselected) {\n      if (curConfig.gridSnapping) {\n        // Use grid snap value regardless of zoom level\n        const multi = svgCanvas.getZoom() * curConfig.snappingStep;\n        dx *= multi;\n        dy *= multi;\n      }\n      svgCanvas.moveSelectedElements(dx, dy);\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const linkControlPoints = function () {\n    $('#tool_node_link').toggleClass('push_button_pressed tool_button');\n    const linked = $('#tool_node_link').hasClass('push_button_pressed');\n    path.linkControlPoints(linked);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clonePathNode = function () {\n    if (path.getNodePoint()) {\n      path.clonePathNode();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const deletePathNode = function () {\n    if (path.getNodePoint()) {\n      path.deletePathNode();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const addSubPath = function () {\n    const button = $('#tool_add_subpath');\n    const sp = !button.hasClass('push_button_pressed');\n    button.toggleClass('push_button_pressed tool_button');\n    path.addSubPath(sp);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const opencloseSubPath = function () {\n    path.opencloseSubPath();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const selectNext = function () {\n    svgCanvas.cycleElement(1);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const selectPrev = function () {\n    svgCanvas.cycleElement(0);\n  };\n\n  /**\n  * @param {0|1} cw\n  * @param {Integer} step\n  * @returns {undefined}\n  */\n  const rotateSelected = function (cw, step) {\n    if (Utils.isNullish(selectedElement) || multiselected) { return; }\n    if (!cw) { step *= -1; }\n    const angle = parseFloat($('#angle').val()) + step;\n    svgCanvas.setRotationAngle(angle);\n    updateContextPanel();\n  };\n\n  /**\n   * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument\n   * @returns {Promise} Resolves to `undefined`\n   */\n  const clickClear = async function () {\n    const [x, y] = curConfig.dimensions;\n    const ok = await $.confirm(uiStrings.notification.QwantToClear);\n    if (!ok) {\n      return;\n    }\n    setSelectMode();\n    svgCanvas.clear();\n    svgCanvas.setResolution(x, y);\n    updateCanvas(true);\n    zoomImage();\n    populateLayers();\n    updateContextPanel();\n    prepPaints();\n    svgCanvas.runExtensions('onNewDocument');\n  };\n\n  /**\n  *\n  * @returns {false}\n  */\n  const clickBold = function () {\n    svgCanvas.setBold(!svgCanvas.getBold());\n    updateContextPanel();\n    return false;\n  };\n\n  /**\n  *\n  * @returns {false}\n  */\n  const clickItalic = function () {\n    svgCanvas.setItalic(!svgCanvas.getItalic());\n    updateContextPanel();\n    return false;\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickSave = function () {\n    // In the future, more options can be provided here\n    const saveOpts = {\n      images: $.pref('img_save'),\n      round_digits: 6\n    };\n    svgCanvas.save(saveOpts);\n  };\n\n  let loadingURL;\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const clickExport = async function () {\n    const imgType = await $.select('Select an image type for export: ', [\n      // See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support\n      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'\n      'PNG',\n      'JPEG', 'BMP', 'WEBP', 'PDF'\n    ], function () {\n      const sel = $(this);\n      if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {\n        if (!$('#image-slider').length) {\n          $(`<div><label>${uiStrings.ui.quality}\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>`).appendTo(sel.parent());\n        }\n      } else {\n        $('#image-slider').parent().remove();\n      }\n    }); // todo: replace hard-coded msg with uiStrings.notification.\n    if (!imgType) {\n      return;\n    }\n    // Open placeholder window (prevents popup)\n    let exportWindowName;\n\n    /**\n     *\n     * @returns {undefined}\n     */\n    function openExportWindow () {\n      const {loadingImage} = uiStrings.notification;\n      if (curConfig.exportWindowType === 'new') {\n        editor.exportWindowCt++;\n      }\n      exportWindowName = curConfig.canvasName + editor.exportWindowCt;\n      let popHTML, popURL;\n      if (loadingURL) {\n        popURL = loadingURL;\n      } else {\n        popHTML = `<!DOCTYPE html><html>\n          <head>\n            <meta charset=\"utf-8\">\n            <title>${loadingImage}</title>\n          </head>\n          <body><h1>${loadingImage}</h1></body>\n        <html>`;\n        if (typeof URL !== 'undefined' && URL.createObjectURL) {\n          const blob = new Blob([popHTML], {type: 'text/html'});\n          popURL = URL.createObjectURL(blob);\n        } else {\n          popURL = 'data:text/html;base64;charset=utf-8,' + Utils.encode64(popHTML);\n        }\n        loadingURL = popURL;\n      }\n      exportWindow = window.open(popURL, exportWindowName);\n    }\n    const chrome = isChrome();\n    if (imgType === 'PDF') {\n      if (!customExportPDF && !chrome) {\n        openExportWindow();\n      }\n      svgCanvas.exportPDF(exportWindowName);\n    } else {\n      if (!customExportImage) {\n        openExportWindow();\n      }\n      const quality = parseInt($('#image-slider').val()) / 100;\n      /* const results = */ await svgCanvas.rasterExport(imgType, quality, exportWindowName);\n    }\n  };\n\n  /**\n   * By default, svgCanvas.open() is a no-op. It is up to an extension\n   *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which\n   *  will make it do something.\n   * @returns {undefined}\n   */\n  const clickOpen = function () {\n    svgCanvas.open();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickImport = function () {\n    /* */\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickUndo = function () {\n    if (undoMgr.getUndoStackSize() > 0) {\n      undoMgr.undo();\n      populateLayers();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickRedo = function () {\n    if (undoMgr.getRedoStackSize() > 0) {\n      undoMgr.redo();\n      populateLayers();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickGroup = function () {\n    // group\n    if (multiselected) {\n      svgCanvas.groupSelectedElements();\n    // ungroup\n    } else if (selectedElement) {\n      svgCanvas.ungroupSelectedElement();\n    }\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickClone = function () {\n    svgCanvas.cloneSelectedElements(20, 20);\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickAlign = function () {\n    const letter = this.id.replace('tool_align', '').charAt(0);\n    svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const clickWireframe = function () {\n    $('#tool_wireframe').toggleClass('push_button_pressed tool_button');\n    workarea.toggleClass('wireframe');\n\n    if (supportsNonSS) { return; }\n    const wfRules = $('#wireframe_rules');\n    if (!wfRules.length) {\n      /* wfRules = */ $('<style id=\"wireframe_rules\"></style>').appendTo('head');\n    } else {\n      wfRules.empty();\n    }\n\n    updateWireFrame();\n  };\n\n  $('#svg_docprops_container, #svg_prefs_container').draggable({\n    cancel: 'button,fieldset',\n    containment: 'window'\n  }).css('position', 'absolute');\n\n  let docprops = false;\n  let preferences = false;\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const showDocProperties = function () {\n    if (docprops) { return; }\n    docprops = true;\n\n    // This selects the correct radio button by using the array notation\n    $('#image_save_opts input').val([$.pref('img_save')]);\n\n    // update resolution option with actual resolution\n    const res = svgCanvas.getResolution();\n    if (curConfig.baseUnit !== 'px') {\n      res.w = convertUnit(res.w) + curConfig.baseUnit;\n      res.h = convertUnit(res.h) + curConfig.baseUnit;\n    }\n\n    $('#canvas_width').val(res.w);\n    $('#canvas_height').val(res.h);\n    $('#canvas_title').val(svgCanvas.getDocumentTitle());\n\n    $('#svg_docprops').show();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const showPreferences = function () {\n    if (preferences) { return; }\n    preferences = true;\n    $('#main_menu').hide();\n\n    // Update background color with current one\n    const canvasBg = curPrefs.bkgd_color;\n    const url = $.pref('bkgd_url');\n    blocks.each(function () {\n      const blk = $(this);\n      const isBg = blk.css('background-color') === canvasBg;\n      blk.toggleClass(curBg, isBg);\n      if (isBg) { $('#canvas_bg_url').removeClass(curBg); }\n    });\n    if (!canvasBg) { blocks.eq(0).addClass(curBg); }\n    if (url) {\n      $('#canvas_bg_url').val(url);\n    }\n    $('#grid_snapping_on').prop('checked', curConfig.gridSnapping);\n    $('#grid_snapping_step').attr('value', curConfig.snappingStep);\n    $('#grid_color').attr('value', curConfig.gridColor);\n\n    $('#svg_prefs').show();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const hideSourceEditor = function () {\n    $('#svg_source_editor').hide();\n    editingsource = false;\n    $('#svg_source_textarea').blur();\n  };\n\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const saveSourceEditor = async function () {\n    if (!editingsource) { return; }\n\n    const saveChanges = function () {\n      svgCanvas.clearSelection();\n      hideSourceEditor();\n      zoomImage();\n      populateLayers();\n      updateTitle();\n      prepPaints();\n    };\n\n    if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {\n      const ok = await $.confirm(uiStrings.notification.QerrorsRevertToSource);\n      if (!ok) {\n        return;\n      }\n      saveChanges();\n      return;\n    }\n    saveChanges();\n    setSelectMode();\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const hideDocProperties = function () {\n    $('#svg_docprops').hide();\n    $('#canvas_width,#canvas_height').removeAttr('disabled');\n    $('#resolution')[0].selectedIndex = 0;\n    $('#image_save_opts input').val([$.pref('img_save')]);\n    docprops = false;\n  };\n\n  /**\n  *\n  * @returns {undefined}\n  */\n  const hidePreferences = function () {\n    $('#svg_prefs').hide();\n    preferences = false;\n  };\n\n  /**\n  *\n  * @returns {boolean} Whether there were problems saving the document properties\n  */\n  const saveDocProperties = function () {\n    // set title\n    const newTitle = $('#canvas_title').val();\n    updateTitle(newTitle);\n    svgCanvas.setDocumentTitle(newTitle);\n\n    // update resolution\n    const width = $('#canvas_width'), w = width.val();\n    const height = $('#canvas_height'), h = height.val();\n\n    if (w !== 'fit' && !isValidUnit('width', w)) {\n      width.parent().addClass('error');\n      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);\n      return false;\n    }\n\n    width.parent().removeClass('error');\n\n    if (h !== 'fit' && !isValidUnit('height', h)) {\n      height.parent().addClass('error');\n      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);\n      return false;\n    }\n\n    height.parent().removeClass('error');\n\n    if (!svgCanvas.setResolution(w, h)) {\n      /* await */ $.alert(uiStrings.notification.noContentToFitTo);\n      return false;\n    }\n\n    // Set image save option\n    $.pref('img_save', $('#image_save_opts :checked').val());\n    updateCanvas();\n    hideDocProperties();\n    return true;\n  };\n\n  /**\n  * Save user preferences based on current values in the UI.\n  * @function module:SVGEditor.savePreferences\n  * @returns {undefined}\n  */\n  const savePreferences = editor.savePreferences = async function () {\n    // Set background\n    const color = $('#bg_blocks div.cur_background').css('background-color') || '#FFF';\n    setBackground(color, $('#canvas_bg_url').val());\n\n    // set language\n    const lang = $('#lang_select').val();\n    if (lang !== $.pref('lang')) {\n      const {langParam, langData} = await editor.putLocale(lang, goodLangs, curConfig);\n      await setLang(langParam, langData);\n    }\n\n    // set icon size\n    setIconSize($('#iconsize').val());\n\n    // set grid setting\n    curConfig.gridSnapping = $('#grid_snapping_on')[0].checked;\n    curConfig.snappingStep = $('#grid_snapping_step').val();\n    curConfig.gridColor = $('#grid_color').val();\n    curConfig.showRulers = $('#show_rulers')[0].checked;\n\n    $('#rulers').toggle(curConfig.showRulers);\n    if (curConfig.showRulers) { updateRulers(); }\n    curConfig.baseUnit = $('#base_unit').val();\n\n    svgCanvas.setConfig(curConfig);\n\n    updateCanvas();\n    hidePreferences();\n  };\n\n  let resetScrollPos = $.noop;\n\n  /**\n  *\n  * @returns {Promise} Resolves to `undefined`\n  */\n  const cancelOverlays = async function () {\n    $('#dialog_box').hide();\n    if (!editingsource && !docprops && !preferences) {\n      if (curContext) {\n        svgCanvas.leaveContext();\n      }\n      return;\n    }\n\n    if (editingsource) {\n      if (origSource !== $('#svg_source_textarea').val()) {\n        const ok = await $.confirm(uiStrings.notification.QignoreSourceChanges);\n        if (ok) {\n          hideSourceEditor();\n        }\n      } else {\n        hideSourceEditor();\n      }\n    } else if (docprops) {\n      hideDocProperties();\n    } else if (preferences) {\n      hidePreferences();\n    }\n    resetScrollPos();\n  };\n\n  const winWh = {width: $(window).width(), height: $(window).height()};\n\n  // Fix for Issue 781: Drawing area jumps to top-left corner on window resize (IE9)\n  if (isIE()) {\n    resetScrollPos = function () {\n      if (workarea[0].scrollLeft === 0 && workarea[0].scrollTop === 0) {\n        workarea[0].scrollLeft = curScrollPos.left;\n        workarea[0].scrollTop = curScrollPos.top;\n      }\n    };\n\n    curScrollPos = {\n      left: workarea[0].scrollLeft,\n      top: workarea[0].scrollTop\n    };\n\n    $(window).resize(resetScrollPos);\n    editor.ready(function () {\n      // TODO: Find better way to detect when to do this to minimize\n      // flickering effect\n      return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n        setTimeout(function () {\n          resetScrollPos();\n          resolve();\n        }, 500);\n      });\n    });\n\n    workarea.scroll(function () {\n      curScrollPos = {\n        left: workarea[0].scrollLeft,\n        top: workarea[0].scrollTop\n      };\n    });\n  }\n\n  $(window).resize(function (evt) {\n    $.each(winWh, function (type, val) {\n      const curval = $(window)[type]();\n      workarea[0]['scroll' + (type === 'width' ? 'Left' : 'Top')] -= (curval - val) / 2;\n      winWh[type] = curval;\n    });\n    setFlyoutPositions();\n  });\n\n  workarea.scroll(function () {\n    // TODO: jQuery's scrollLeft/Top() wouldn't require a null check\n    if ($('#ruler_x').length) {\n      $('#ruler_x')[0].scrollLeft = workarea[0].scrollLeft;\n    }\n    if ($('#ruler_y').length) {\n      $('#ruler_y')[0].scrollTop = workarea[0].scrollTop;\n    }\n  });\n\n  $('#url_notice').click(function () {\n    /* await */ $.alert(this.title);\n  });\n\n  $('#change_image_url').click(promptImgURL);\n\n  // added these event handlers for all the push buttons so they\n  // behave more like buttons being pressed-in and not images\n  (function () {\n    const toolnames = ['clear', 'open', 'save', 'source', 'delete', 'delete_multi', 'paste', 'clone', 'clone_multi', 'move_top', 'move_bottom'];\n    const curClass = 'tool_button_current';\n\n    let allTools = '';\n\n    $.each(toolnames, function (i, item) {\n      allTools += (i ? ',' : '') + '#tool_' + item;\n    });\n\n    $(allTools).mousedown(function () {\n      $(this).addClass(curClass);\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n\n    $('#tool_undo, #tool_redo').mousedown(function () {\n      if (!$(this).hasClass('disabled')) { $(this).addClass(curClass); }\n    }).bind('mousedown mouseout', function () {\n      $(this).removeClass(curClass);\n    });\n  }());\n\n  // switch modifier key in tooltips if mac\n  // NOTE: This code is not used yet until I can figure out how to successfully bind ctrl/meta\n  // in Opera and Chrome\n  if (isMac() && !window.opera) {\n    const shortcutButtons = [\n      'tool_clear', 'tool_save', 'tool_source',\n      'tool_undo', 'tool_redo', 'tool_clone'\n    ];\n    let i = shortcutButtons.length;\n    while (i--) {\n      const button = document.getElementById(shortcutButtons[i]);\n      if (button) {\n        const {title} = button;\n        const index = title.indexOf('Ctrl+');\n        button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');\n      }\n    }\n  }\n\n  /**\n  * @param {external:jQuery} elem\n  * @todo Go back to the color boxes having white background-color and then setting\n  *  background-image to none.png (otherwise partially transparent gradients look weird)\n  * @returns {undefined}\n  */\n  const colorPicker = function (elem) {\n    const picker = elem.attr('id') === 'stroke_color' ? 'stroke' : 'fill';\n    // const opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));\n    const title = picker === 'stroke'\n      ? uiStrings.ui.pick_stroke_paint_opacity\n      : uiStrings.ui.pick_fill_paint_opacity;\n    // let wasNone = false; // Currently unused\n    const pos = elem.offset();\n    let {paint} = paintBox[picker];\n    $('#color_picker')\n      .draggable({\n        cancel: '.jGraduate_tabs, .jGraduate_colPick, .jGraduate_gradPick, .jPicker',\n        containment: 'window'\n      })\n      .css(curConfig.colorPickerCSS || {left: pos.left - 140, bottom: 40})\n      .jGraduate(\n        {\n          paint,\n          window: {pickerTitle: title},\n          images: {clientPath: curConfig.jGraduatePath},\n          newstop: 'inverse'\n        },\n        function (p) {\n          paint = new $.jGraduate.Paint(p);\n          paintBox[picker].setPaint(paint);\n          svgCanvas.setPaint(picker, paint);\n          $('#color_picker').hide();\n        },\n        function () {\n          $('#color_picker').hide();\n        }\n      );\n  };\n\n  class PaintBox {\n    constructor (container, type) {\n      const cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke'];\n      // set up gradients to be used for the buttons\n      const svgdocbox = new DOMParser().parseFromString(\n        `<svg xmlns=\"http://www.w3.org/2000/svg\">\n          <rect width=\"16.5\" height=\"16.5\"\n            fill=\"#${cur.color}\" opacity=\"${cur.opacity}\"/>\n          <defs><linearGradient id=\"gradbox_\"/></defs>\n        </svg>`,\n        'text/xml'\n      );\n\n      let docElem = svgdocbox.documentElement;\n      docElem = $(container)[0].appendChild(document.importNode(docElem, true));\n      docElem.setAttribute('width', 16.5);\n\n      this.rect = docElem.firstElementChild;\n      this.defs = docElem.getElementsByTagName('defs')[0];\n      this.grad = this.defs.firstElementChild;\n      this.paint = new $.jGraduate.Paint({solidColor: cur.color});\n      this.type = type;\n    }\n    setPaint (paint, apply) {\n      this.paint = paint;\n\n      const ptype = paint.type;\n      const opac = paint.alpha / 100;\n\n      let fillAttr = 'none';\n      switch (ptype) {\n      case 'solidColor':\n        fillAttr = (paint[ptype] !== 'none') ? '#' + paint[ptype] : paint[ptype];\n        break;\n      case 'linearGradient':\n      case 'radialGradient': {\n        this.grad.remove();\n        this.grad = this.defs.appendChild(paint[ptype]);\n        const id = this.grad.id = 'gradbox_' + this.type;\n        fillAttr = 'url(#' + id + ')';\n        break;\n      }\n      }\n\n      this.rect.setAttribute('fill', fillAttr);\n      this.rect.setAttribute('opacity', opac);\n\n      if (apply) {\n        svgCanvas.setColor(this.type, this._paintColor, true);\n        svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);\n      }\n    }\n\n    update (apply) {\n      if (!selectedElement) { return; }\n\n      const {type} = this;\n      switch (selectedElement.tagName) {\n      case 'use':\n      case 'image':\n      case 'foreignObject':\n        // These elements don't have fill or stroke, so don't change\n        // the current value\n        return;\n      case 'g':\n      case 'a': {\n        const childs = selectedElement.getElementsByTagName('*');\n\n        let gPaint = null;\n        for (let i = 0, len = childs.length; i < len; i++) {\n          const elem = childs[i];\n          const p = elem.getAttribute(type);\n          if (i === 0) {\n            gPaint = p;\n          } else if (gPaint !== p) {\n            gPaint = null;\n            break;\n          }\n        }\n\n        if (gPaint === null) {\n          // No common color, don't update anything\n          this._paintColor = null;\n          return;\n        }\n        this._paintColor = gPaint;\n        this._paintOpacity = 1;\n        break;\n      } default: {\n        this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));\n        if (isNaN(this._paintOpacity)) {\n          this._paintOpacity = 1.0;\n        }\n\n        const defColor = type === 'fill' ? 'black' : 'none';\n        this._paintColor = selectedElement.getAttribute(type) || defColor;\n      }\n      }\n\n      if (apply) {\n        svgCanvas.setColor(type, this._paintColor, true);\n        svgCanvas.setPaintOpacity(type, this._paintOpacity, true);\n      }\n\n      this._paintOpacity *= 100;\n\n      const paint = getPaint(this._paintColor, this._paintOpacity, type);\n      // update the rect inside #fill_color/#stroke_color\n      this.setPaint(paint);\n    }\n\n    prep () {\n      const ptype = this.paint.type;\n\n      switch (ptype) {\n      case 'linearGradient':\n      case 'radialGradient': {\n        const paint = new $.jGraduate.Paint({copy: this.paint});\n        svgCanvas.setPaint(this.type, paint);\n        break;\n      }\n      }\n    }\n  }\n\n  paintBox.fill = new PaintBox('#fill_color', 'fill');\n  paintBox.stroke = new PaintBox('#stroke_color', 'stroke');\n\n  $('#stroke_width').val(curConfig.initStroke.width);\n  $('#group_opacity').val(curConfig.initOpacity * 100);\n\n  // Use this SVG elem to test vectorEffect support\n  const testEl = paintBox.fill.rect.cloneNode(false);\n  testEl.setAttribute('style', 'vector-effect:non-scaling-stroke');\n  const supportsNonSS = (testEl.style.vectorEffect === 'non-scaling-stroke');\n  testEl.removeAttribute('style');\n  const svgdocbox = paintBox.fill.rect.ownerDocument;\n  // Use this to test support for blur element. Seems to work to test support in Webkit\n  const blurTest = svgdocbox.createElementNS(NS.SVG, 'feGaussianBlur');\n  if (blurTest.stdDeviationX === undefined) {\n    $('#tool_blur').hide();\n  }\n  $(blurTest).remove();\n\n  // Test for zoom icon support\n  (function () {\n    const pre = '-' + uaPrefix.toLowerCase() + '-zoom-';\n    const zoom = pre + 'in';\n    workarea.css('cursor', zoom);\n    if (workarea.css('cursor') === zoom) {\n      zoomInIcon = zoom;\n      zoomOutIcon = pre + 'out';\n    }\n    workarea.css('cursor', 'auto');\n  }());\n\n  // Test for embedImage support (use timeout to not interfere with page load)\n  setTimeout(function () {\n    svgCanvas.embedImage('images/logo.png', function (datauri) {\n      if (!datauri) {\n        // Disable option\n        $('#image_save_opts [value=embed]').attr('disabled', 'disabled');\n        $('#image_save_opts input').val(['ref']);\n        $.pref('img_save', 'ref');\n        $('#image_opt_embed').css('color', '#666').attr(\n          'title',\n          uiStrings.notification.featNotSupported\n        );\n      }\n    });\n  }, 1000);\n\n  $('#fill_color, #tool_fill .icon_label').click(function () {\n    colorPicker($('#fill_color'));\n    updateToolButtonState();\n  });\n\n  $('#stroke_color, #tool_stroke .icon_label').click(function () {\n    colorPicker($('#stroke_color'));\n    updateToolButtonState();\n  });\n\n  $('#group_opacityLabel').click(function () {\n    $('#opacity_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#zoomLabel').click(function () {\n    $('#zoom_dropdown button').mousedown();\n    $(window).mouseup();\n  });\n\n  $('#tool_move_top').mousedown(function (evt) {\n    $('#tools_stacking').show();\n    evt.preventDefault();\n  });\n\n  $('.layer_button').mousedown(function () {\n    $(this).addClass('layer_buttonpressed');\n  }).mouseout(function () {\n    $(this).removeClass('layer_buttonpressed');\n  }).mouseup(function () {\n    $(this).removeClass('layer_buttonpressed');\n  });\n\n  $('.push_button').mousedown(function () {\n    if (!$(this).hasClass('disabled')) {\n      $(this).addClass('push_button_pressed').removeClass('push_button');\n    }\n  }).mouseout(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  }).mouseup(function () {\n    $(this).removeClass('push_button_pressed').addClass('push_button');\n  });\n\n  // ask for a layer name\n  $('#layer_new').click(async function () {\n    let uniqName,\n      i = svgCanvas.getCurrentDrawing().getNumLayers();\n    do {\n      uniqName = uiStrings.layers.layer + ' ' + (++i);\n    } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));\n\n    const newName = await $.prompt(uiStrings.notification.enterUniqueLayerName, uniqName);\n    if (!newName) { return; }\n    if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n      /* await */ $.alert(uiStrings.notification.dupeLayerName);\n      return;\n    }\n    svgCanvas.createLayer(newName);\n    updateContextPanel();\n    populateLayers();\n  });\n\n  /**\n   *\n   * @returns {undefined}\n   */\n  function deleteLayer () {\n    if (svgCanvas.deleteCurrentLayer()) {\n      updateContextPanel();\n      populateLayers();\n      // This matches what SvgCanvas does\n      // TODO: make this behavior less brittle (svg-editor should get which\n      // layer is selected from the canvas and then select that one in the UI)\n      $('#layerlist tr.layer').removeClass('layersel');\n      $('#layerlist tr.layer:first').addClass('layersel');\n    }\n  }\n\n  /**\n   *\n   * @returns {undefined}\n   */\n  async function cloneLayer () {\n    const name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';\n\n    const newName = await $.prompt(uiStrings.notification.enterUniqueLayerName, name);\n    if (!newName) { return; }\n    if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n      /* await */ $.alert(uiStrings.notification.dupeLayerName);\n      return;\n    }\n    svgCanvas.cloneLayer(newName);\n    updateContextPanel();\n    populateLayers();\n  }\n\n  /**\n   *\n   * @returns {undefined}\n   */\n  function mergeLayer () {\n    if ($('#layerlist tr.layersel').index() === svgCanvas.getCurrentDrawing().getNumLayers() - 1) {\n      return;\n    }\n    svgCanvas.mergeLayer();\n    updateContextPanel();\n    populateLayers();\n  }\n\n  /**\n   * @param {Integer} pos\n   * @returns {undefined}\n   */\n  function moveLayer (pos) {\n    const total = svgCanvas.getCurrentDrawing().getNumLayers();\n\n    let curIndex = $('#layerlist tr.layersel').index();\n    if (curIndex > 0 || curIndex < total - 1) {\n      curIndex += pos;\n      svgCanvas.setCurrentLayerPosition(total - curIndex - 1);\n      populateLayers();\n    }\n  }\n\n  $('#layer_delete').click(deleteLayer);\n\n  $('#layer_up').click(() => {\n    moveLayer(-1);\n  });\n\n  $('#layer_down').click(() => {\n    moveLayer(1);\n  });\n\n  $('#layer_rename').click(async function () {\n    // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused\n    const oldName = $('#layerlist tr.layersel td.layername').text();\n    const newName = await $.prompt(uiStrings.notification.enterNewLayerName, '');\n    if (!newName) { return; }\n    if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {\n      /* await */ $.alert(uiStrings.notification.layerHasThatName);\n      return;\n    }\n\n    svgCanvas.renameCurrentLayer(newName);\n    populateLayers();\n  });\n\n  const SIDEPANEL_MAXWIDTH = 300;\n  const SIDEPANEL_OPENWIDTH = 150;\n  let sidedrag = -1, sidedragging = false, allowmove = false;\n\n  /**\n   * @param {Float} delta\n   * @fires module:svgcanvas.SvgCanvas#event:ext-workareaResized\n   * @returns {undefined}\n   */\n  const changeSidePanelWidth = function (delta) {\n    const rulerX = $('#ruler_x');\n    $('#sidepanels').width('+=' + delta);\n    $('#layerpanel').width('+=' + delta);\n    rulerX.css('right', parseInt(rulerX.css('right')) + delta);\n    workarea.css('right', parseInt(workarea.css('right')) + delta);\n    svgCanvas.runExtensions('workareaResized');\n  };\n\n  /**\n  * @param {Event} evt\n  * @returns {undefined}\n  */\n  const resizeSidePanel = function (evt) {\n    if (!allowmove) { return; }\n    if (sidedrag === -1) { return; }\n    sidedragging = true;\n    let deltaX = sidedrag - evt.pageX;\n    const sideWidth = $('#sidepanels').width();\n    if (sideWidth + deltaX > SIDEPANEL_MAXWIDTH) {\n      deltaX = SIDEPANEL_MAXWIDTH - sideWidth;\n      // sideWidth = SIDEPANEL_MAXWIDTH;\n    } else if (sideWidth + deltaX < 2) {\n      deltaX = 2 - sideWidth;\n      // sideWidth = 2;\n    }\n    if (deltaX === 0) { return; }\n    sidedrag -= deltaX;\n    changeSidePanelWidth(deltaX);\n  };\n\n  /**\n   * If width is non-zero, then fully close it; otherwise fully open it.\n   * @param {boolean} close Forces the side panel closed\n   * @returns {undefined}\n   */\n  const toggleSidePanel = function (close) {\n    const w = $('#sidepanels').width();\n    const deltaX = (w > 2 || close ? 2 : SIDEPANEL_OPENWIDTH) - w;\n    changeSidePanelWidth(deltaX);\n  };\n\n  $('#sidepanel_handle')\n    .mousedown(function (evt) {\n      sidedrag = evt.pageX;\n      $(window).mousemove(resizeSidePanel);\n      allowmove = false;\n      // Silly hack for Chrome, which always runs mousemove right after mousedown\n      setTimeout(function () {\n        allowmove = true;\n      }, 20);\n    })\n    .mouseup(function (evt) {\n      if (!sidedragging) { toggleSidePanel(); }\n      sidedrag = -1;\n      sidedragging = false;\n    });\n\n  $(window).mouseup(function () {\n    sidedrag = -1;\n    sidedragging = false;\n    $('#svg_editor').unbind('mousemove', resizeSidePanel);\n  });\n\n  populateLayers();\n\n  // function changeResolution (x,y) {\n  //   const {zoom} = svgCanvas.getResolution();\n  //   setResolution(x * zoom, y * zoom);\n  // }\n\n  const centerCanvas = () => {\n    // this centers the canvas vertically in the workarea (horizontal handled in CSS)\n    workarea.css('line-height', workarea.height() + 'px');\n  };\n\n  $(window).bind('load resize', centerCanvas);\n\n  /**\n   * @implements {module:jQuerySpinButton.StepCallback}\n   */\n  function stepFontSize (elem, step) {\n    const origVal = Number(elem.value);\n    const sugVal = origVal + step;\n    const increasing = sugVal >= origVal;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 24) {\n      if (increasing) {\n        return Math.round(origVal * 1.1);\n      }\n      return Math.round(origVal / 1.1);\n    }\n    if (origVal <= 1) {\n      if (increasing) {\n        return origVal * 2;\n      }\n      return origVal / 2;\n    }\n    return sugVal;\n  }\n\n  /**\n   * @implements {module:jQuerySpinButton.StepCallback}\n   */\n  function stepZoom (elem, step) {\n    const origVal = Number(elem.value);\n    if (origVal === 0) { return 100; }\n    const sugVal = origVal + step;\n    if (step === 0) { return origVal; }\n\n    if (origVal >= 100) {\n      return sugVal;\n    }\n    if (sugVal >= origVal) {\n      return origVal * 2;\n    }\n    return origVal / 2;\n  }\n\n  // function setResolution (w, h, center) {\n  //   updateCanvas();\n  //   // w -= 0; h -= 0;\n  //   // $('#svgcanvas').css({width: w, height: h});\n  //   // $('#canvas_width').val(w);\n  //   // $('#canvas_height').val(h);\n  //   //\n  //   // if (center) {\n  //   //   const wArea = workarea;\n  //   //   const scrollY = h/2 - wArea.height()/2;\n  //   //   const scrollX = w/2 - wArea.width()/2;\n  //   //   wArea[0].scrollTop = scrollY;\n  //   //   wArea[0].scrollLeft = scrollX;\n  //   // }\n  // }\n\n  $('#resolution').change(function () {\n    const wh = $('#canvas_width,#canvas_height');\n    if (!this.selectedIndex) {\n      if ($('#canvas_width').val() === 'fit') {\n        wh.removeAttr('disabled').val(100);\n      }\n    } else if (this.value === 'content') {\n      wh.val('fit').attr('disabled', 'disabled');\n    } else {\n      const dims = this.value.split('x');\n      $('#canvas_width').val(dims[0]);\n      $('#canvas_height').val(dims[1]);\n      wh.removeAttr('disabled');\n    }\n  });\n\n  // Prevent browser from erroneously repopulating fields\n  $('input,select').attr('autocomplete', 'off');\n\n  const dialogSelectors = [\n    '#tool_source_cancel', '#tool_docprops_cancel',\n    '#tool_prefs_cancel', '.overlay'\n  ];\n  /**\n   * Associate all button actions as well as non-button keyboard shortcuts\n   * @namespace {PlainObject} module:SVGEditor~Actions\n   */\n  const Actions = (function () {\n    /**\n    * @typedef {PlainObject} module:SVGEditor.ToolButton\n    * @property {string} sel The CSS selector for the tool\n    * @property {external:jQuery.Function} fn A handler to be attached to the `evt`\n    * @property {string} evt The event for which the `fn` listener will be added\n    * @property {module:SVGEditor.Key} [key] [key, preventDefault, NoDisableInInput]\n    * @property {string} [parent] Selector\n    * @property {boolean} [hidekey] Whether to show key value in title\n    * @property {string} [icon] The button ID\n    * @property {boolean} isDefault For flyout holders\n    */\n    /**\n     *\n     * @name module:SVGEditor~ToolButtons\n     * @type {module:SVGEditor.ToolButton[]}\n     */\n    const toolButtons = [\n      {sel: '#tool_select', fn: clickSelect, evt: 'click', key: ['V', true]},\n      {sel: '#tool_fhpath', fn: clickFHPath, evt: 'click', key: ['Q', true]},\n      {sel: '#tool_line', fn: clickLine, evt: 'click', key: ['L', true],\n        parent: '#tools_line', prepend: true},\n      {sel: '#tool_rect', fn: clickRect, evt: 'mouseup',\n        key: ['R', true], parent: '#tools_rect', icon: 'rect'},\n      {sel: '#tool_square', fn: clickSquare, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'square'},\n      {sel: '#tool_fhrect', fn: clickFHRect, evt: 'mouseup',\n        parent: '#tools_rect', icon: 'fh_rect'},\n      {sel: '#tool_ellipse', fn: clickEllipse, evt: 'mouseup',\n        key: ['E', true], parent: '#tools_ellipse', icon: 'ellipse'},\n      {sel: '#tool_circle', fn: clickCircle, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'circle'},\n      {sel: '#tool_fhellipse', fn: clickFHEllipse, evt: 'mouseup',\n        parent: '#tools_ellipse', icon: 'fh_ellipse'},\n      {sel: '#tool_path', fn: clickPath, evt: 'click', key: ['P', true]},\n      {sel: '#tool_text', fn: clickText, evt: 'click', key: ['T', true]},\n      {sel: '#tool_image', fn: clickImage, evt: 'mouseup'},\n      {sel: '#tool_zoom', fn: clickZoom, evt: 'mouseup', key: ['Z', true]},\n      {sel: '#tool_clear', fn: clickClear, evt: 'mouseup', key: ['N', true]},\n      {sel: '#tool_save', fn () {\n        if (editingsource) {\n          saveSourceEditor();\n        } else {\n          clickSave();\n        }\n      }, evt: 'mouseup', key: ['S', true]},\n      {sel: '#tool_export', fn: clickExport, evt: 'mouseup'},\n      {sel: '#tool_open', fn: clickOpen, evt: 'mouseup', key: ['O', true]},\n      {sel: '#tool_import', fn: clickImport, evt: 'mouseup'},\n      {sel: '#tool_source', fn: showSourceEditor, evt: 'click', key: ['U', true]},\n      {sel: '#tool_wireframe', fn: clickWireframe, evt: 'click', key: ['F', true]},\n      {\n        key: ['esc', false, false],\n        fn () {\n          if (dialogSelectors.every((sel) => {\n            return $(sel + ':hidden').length;\n          })) {\n            svgCanvas.clearSelection();\n          }\n        },\n        hidekey: true\n      },\n      {sel: dialogSelectors.join(','), fn: cancelOverlays, evt: 'click',\n        key: ['esc', false, false], hidekey: true},\n      {sel: '#tool_source_save', fn: saveSourceEditor, evt: 'click'},\n      {sel: '#tool_docprops_save', fn: saveDocProperties, evt: 'click'},\n      {sel: '#tool_docprops', fn: showDocProperties, evt: 'mouseup'},\n      {sel: '#tool_prefs_save', fn: savePreferences, evt: 'click'},\n      {sel: '#tool_prefs_option', fn () { showPreferences(); return false; }, evt: 'mouseup'},\n      {sel: '#tool_delete,#tool_delete_multi', fn: deleteSelected,\n        evt: 'click', key: ['del/backspace', true]},\n      {sel: '#tool_reorient', fn: reorientPath, evt: 'click'},\n      {sel: '#tool_node_link', fn: linkControlPoints, evt: 'click'},\n      {sel: '#tool_node_clone', fn: clonePathNode, evt: 'click'},\n      {sel: '#tool_node_delete', fn: deletePathNode, evt: 'click'},\n      {sel: '#tool_openclose_path', fn: opencloseSubPath, evt: 'click'},\n      {sel: '#tool_add_subpath', fn: addSubPath, evt: 'click'},\n      {sel: '#tool_move_top', fn: moveToTopSelected, evt: 'click', key: 'ctrl+shift+]'},\n      {sel: '#tool_move_bottom', fn: moveToBottomSelected, evt: 'click', key: 'ctrl+shift+['},\n      {sel: '#tool_topath', fn: convertToPath, evt: 'click'},\n      {sel: '#tool_make_link,#tool_make_link_multi', fn: makeHyperlink, evt: 'click'},\n      {sel: '#tool_undo', fn: clickUndo, evt: 'click'},\n      {sel: '#tool_redo', fn: clickRedo, evt: 'click'},\n      {sel: '#tool_clone,#tool_clone_multi', fn: clickClone, evt: 'click', key: ['D', true]},\n      {sel: '#tool_group_elements', fn: clickGroup, evt: 'click', key: ['G', true]},\n      {sel: '#tool_ungroup', fn: clickGroup, evt: 'click'},\n      {sel: '#tool_unlink_use', fn: clickGroup, evt: 'click'},\n      {sel: '[id^=tool_align]', fn: clickAlign, evt: 'click'},\n      // these two lines are required to make Opera work properly with the flyout mechanism\n      // {sel: '#tools_rect_show', fn: clickRect, evt: 'click'},\n      // {sel: '#tools_ellipse_show', fn: clickEllipse, evt: 'click'},\n      {sel: '#tool_bold', fn: clickBold, evt: 'mousedown'},\n      {sel: '#tool_italic', fn: clickItalic, evt: 'mousedown'},\n      {sel: '#sidepanel_handle', fn: toggleSidePanel, key: ['X']},\n      {sel: '#copy_save_done', fn: cancelOverlays, evt: 'click'},\n\n      // Shortcuts not associated with buttons\n\n      {key: 'ctrl+left', fn () { rotateSelected(0, 1); }},\n      {key: 'ctrl+right', fn () { rotateSelected(1, 1); }},\n      {key: 'ctrl+shift+left', fn () { rotateSelected(0, 5); }},\n      {key: 'ctrl+shift+right', fn () { rotateSelected(1, 5); }},\n      {key: 'shift+O', fn: selectPrev},\n      {key: 'shift+P', fn: selectNext},\n      {key: [modKey + 'up', true], fn () { zoomImage(2); }},\n      {key: [modKey + 'down', true], fn () { zoomImage(0.5); }},\n      {key: [modKey + ']', true], fn () { moveUpDownSelected('Up'); }},\n      {key: [modKey + '[', true], fn () { moveUpDownSelected('Down'); }},\n      {key: ['up', true], fn () { moveSelected(0, -1); }},\n      {key: ['down', true], fn () { moveSelected(0, 1); }},\n      {key: ['left', true], fn () { moveSelected(-1, 0); }},\n      {key: ['right', true], fn () { moveSelected(1, 0); }},\n      {key: 'shift+up', fn () { moveSelected(0, -10); }},\n      {key: 'shift+down', fn () { moveSelected(0, 10); }},\n      {key: 'shift+left', fn () { moveSelected(-10, 0); }},\n      {key: 'shift+right', fn () { moveSelected(10, 0); }},\n      {key: ['alt+up', true], fn () { svgCanvas.cloneSelectedElements(0, -1); }},\n      {key: ['alt+down', true], fn () { svgCanvas.cloneSelectedElements(0, 1); }},\n      {key: ['alt+left', true], fn () { svgCanvas.cloneSelectedElements(-1, 0); }},\n      {key: ['alt+right', true], fn () { svgCanvas.cloneSelectedElements(1, 0); }},\n      {key: ['alt+shift+up', true], fn () { svgCanvas.cloneSelectedElements(0, -10); }},\n      {key: ['alt+shift+down', true], fn () { svgCanvas.cloneSelectedElements(0, 10); }},\n      {key: ['alt+shift+left', true], fn () { svgCanvas.cloneSelectedElements(-10, 0); }},\n      {key: ['alt+shift+right', true], fn () { svgCanvas.cloneSelectedElements(10, 0); }},\n      {key: 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n      {key: modKey + 'a', fn () { svgCanvas.selectAllInCurrentLayer(); }},\n\n      // Standard shortcuts\n      {key: modKey + 'z', fn: clickUndo},\n      {key: modKey + 'shift+z', fn: clickRedo},\n      {key: modKey + 'y', fn: clickRedo},\n\n      {key: modKey + 'x', fn: cutSelected},\n      {key: modKey + 'c', fn: copySelected},\n      {key: modKey + 'v', fn: pasteInCenter}\n    ];\n\n    // Tooltips not directly associated with a single function\n    const keyAssocs = {\n      '4/Shift+4': '#tools_rect_show',\n      '5/Shift+5': '#tools_ellipse_show'\n    };\n\n    return { /** @lends module:SVGEditor~Actions */\n      /**\n       * @returns {undefined}\n       */\n      setAll () {\n        const flyouts = {};\n\n        $.each(toolButtons, function (i, opts) {\n          // Bind function to button\n          let btn;\n          if (opts.sel) {\n            btn = $(opts.sel);\n            if (!btn.length) { return true; } // Skip if markup does not exist\n            if (opts.evt) {\n              // `touch.js` changes `touchstart` to `mousedown`,\n              //   so we must map tool button click events as well\n              if (isTouch() && opts.evt === 'click') {\n                opts.evt = 'mousedown';\n              }\n              btn[opts.evt](opts.fn);\n            }\n\n            // Add to parent flyout menu, if able to be displayed\n            if (opts.parent && $(opts.parent + '_show').length) {\n              let fH = $(opts.parent);\n              if (!fH.length) {\n                fH = makeFlyoutHolder(opts.parent.substr(1));\n              }\n              if (opts.prepend) {\n                btn[0].style.margin = 'initial';\n              }\n              fH[opts.prepend ? 'prepend' : 'append'](btn);\n\n              if (!Array.isArray(flyouts[opts.parent])) {\n                flyouts[opts.parent] = [];\n              }\n              flyouts[opts.parent].push(opts);\n            }\n          }\n\n          // Bind function to shortcut key\n          if (opts.key) {\n            // Set shortcut based on options\n            let keyval,\n              // disInInp = true,\n              pd = false;\n            if (Array.isArray(opts.key)) {\n              keyval = opts.key[0];\n              if (opts.key.length > 1) { pd = opts.key[1]; }\n              // if (opts.key.length > 2) { disInInp = opts.key[2]; }\n            } else {\n              keyval = opts.key;\n            }\n            keyval = String(keyval);\n\n            const {fn} = opts;\n            $.each(keyval.split('/'), function (j, key) {\n              $(document).bind('keydown', key, function (e) {\n                fn();\n                if (pd) {\n                  e.preventDefault();\n                }\n                // Prevent default on ALL keys?\n                return false;\n              });\n            });\n\n            // Put shortcut in title\n            if (opts.sel && !opts.hidekey && btn.attr('title')) {\n              const newTitle = btn.attr('title').split('[')[0] + ' (' + keyval + ')';\n              keyAssocs[keyval] = opts.sel;\n              // Disregard for menu items\n              if (!btn.parents('#main_menu').length) {\n                btn.attr('title', newTitle);\n              }\n            }\n          }\n          return true;\n        });\n\n        // Setup flyouts\n        setupFlyouts(flyouts);\n\n        // Misc additional actions\n\n        // Make 'return' keypress trigger the change event\n        $('.attr_changer, #image_url').bind(\n          'keydown',\n          'return',\n          function (evt) {\n            $(this).change();\n            evt.preventDefault();\n          }\n        );\n\n        $(window).bind('keydown', 'tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectNext();\n          }\n        }).bind('keydown', 'shift+tab', function (e) {\n          if (uiContext === 'canvas') {\n            e.preventDefault();\n            selectPrev();\n          }\n        });\n\n        $('#tool_zoom').dblclick(dblclickZoom);\n      },\n      /**\n       * @returns {undefined}\n       */\n      setTitles () {\n        $.each(keyAssocs, function (keyval, sel) {\n          const menu = ($(sel).parents('#main_menu').length);\n\n          $(sel).each(function () {\n            let t;\n            if (menu) {\n              t = $(this).text().split(' [')[0];\n            } else {\n              t = this.title.split(' [')[0];\n            }\n            let keyStr = '';\n            // Shift+Up\n            $.each(keyval.split('/'), function (i, key) {\n              const modBits = key.split('+');\n              let mod = '';\n              if (modBits.length > 1) {\n                mod = modBits[0] + '+';\n                key = modBits[1];\n              }\n              keyStr += (i ? '/' : '') + mod + (uiStrings['key_' + key] || key);\n            });\n            if (menu) {\n              this.lastChild.textContent = t + ' [' + keyStr + ']';\n            } else {\n              this.title = t + ' [' + keyStr + ']';\n            }\n          });\n        });\n      },\n      /**\n       * @param {string} sel Selector to match\n       * @returns {module:SVGEditor.ToolButton}\n       */\n      getButtonData (sel) {\n        return Object.values(toolButtons).find((btn) => {\n          return btn.sel === sel;\n        });\n      }\n    };\n  }());\n\n  // Select given tool\n  editor.ready(function () {\n    let tool;\n    const itool = curConfig.initTool,\n      container = $('#tools_left, #svg_editor .tools_flyout'),\n      preTool = container.find('#tool_' + itool),\n      regTool = container.find('#' + itool);\n    if (preTool.length) {\n      tool = preTool;\n    } else if (regTool.length) {\n      tool = regTool;\n    } else {\n      tool = $('#tool_select');\n    }\n    tool.click().mouseup();\n\n    if (curConfig.wireframe) {\n      $('#tool_wireframe').click();\n    }\n\n    if (curConfig.showlayers) {\n      toggleSidePanel();\n    }\n\n    $('#rulers').toggle(Boolean(curConfig.showRulers));\n\n    if (curConfig.showRulers) {\n      $('#show_rulers')[0].checked = true;\n    }\n\n    if (curConfig.baseUnit) {\n      $('#base_unit').val(curConfig.baseUnit);\n    }\n\n    if (curConfig.gridSnapping) {\n      $('#grid_snapping_on')[0].checked = true;\n    }\n\n    if (curConfig.snappingStep) {\n      $('#grid_snapping_step').val(curConfig.snappingStep);\n    }\n\n    if (curConfig.gridColor) {\n      $('#grid_color').val(curConfig.gridColor);\n    }\n  });\n\n  // init SpinButtons\n  $('#rect_rx').SpinButton({\n    min: 0, max: 1000, stateObj, callback: changeRectRadius\n  });\n  $('#stroke_width').SpinButton({\n    min: 0, max: 99, smallStep: 0.1, stateObj, callback: changeStrokeWidth\n  });\n  $('#angle').SpinButton({\n    min: -180, max: 180, step: 5, stateObj, callback: changeRotationAngle\n  });\n  $('#font_size').SpinButton({\n    min: 0.001, stepfunc: stepFontSize, stateObj, callback: changeFontSize\n  });\n  $('#group_opacity').SpinButton({\n    min: 0, max: 100, step: 5, stateObj, callback: changeOpacity\n  });\n  $('#blur').SpinButton({\n    min: 0, max: 10, step: 0.1, stateObj, callback: changeBlur\n  });\n  $('#zoom').SpinButton({\n    min: 0.001, max: 10000, step: 50, stepfunc: stepZoom,\n    stateObj, callback: changeZoom\n  // Set default zoom\n  }).val(\n    svgCanvas.getZoom() * 100\n  );\n\n  $('#workarea').contextMenu(\n    {\n      menu: 'cmenu_canvas',\n      inSpeed: 0\n    },\n    function (action, el, pos) {\n      switch (action) {\n      case 'delete':\n        deleteSelected();\n        break;\n      case 'cut':\n        cutSelected();\n        break;\n      case 'copy':\n        copySelected();\n        break;\n      case 'paste':\n        svgCanvas.pasteElements();\n        break;\n      case 'paste_in_place':\n        svgCanvas.pasteElements('in_place');\n        break;\n      case 'group':\n      case 'group_elements':\n        svgCanvas.groupSelectedElements();\n        break;\n      case 'ungroup':\n        svgCanvas.ungroupSelectedElement();\n        break;\n      case 'move_front':\n        moveToTopSelected();\n        break;\n      case 'move_up':\n        moveUpDownSelected('Up');\n        break;\n      case 'move_down':\n        moveUpDownSelected('Down');\n        break;\n      case 'move_back':\n        moveToBottomSelected();\n        break;\n      default:\n        if (hasCustomHandler(action)) {\n          getCustomHandler(action).call();\n        }\n        break;\n      }\n    }\n  );\n\n  /**\n  * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}\n  * @param {\"dupe\"|\"delete\"|\"merge_down\"|\"merge_all\"} action\n  * @param {external:jQuery} el\n  * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos\n  * @returns {undefined}\n  */\n  const lmenuFunc = function (action, el, pos) {\n    switch (action) {\n    case 'dupe':\n      /* await */ cloneLayer();\n      break;\n    case 'delete':\n      deleteLayer();\n      break;\n    case 'merge_down':\n      mergeLayer();\n      break;\n    case 'merge_all':\n      svgCanvas.mergeAllLayers();\n      updateContextPanel();\n      populateLayers();\n      break;\n    }\n  };\n\n  $('#layerlist').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0\n    },\n    lmenuFunc\n  );\n\n  $('#layer_moreopts').contextMenu(\n    {\n      menu: 'cmenu_layers',\n      inSpeed: 0,\n      allowLeft: true\n    },\n    lmenuFunc\n  );\n\n  $('.contextMenu li').mousedown(function (ev) {\n    ev.preventDefault();\n  });\n\n  $('#cmenu_canvas li').disableContextMenu();\n  canvMenu.enableContextMenuItems('#delete,#cut,#copy');\n\n  /**\n   * @returns {undefined}\n   */\n  function enableOrDisableClipboard () {\n    let svgeditClipboard;\n    try {\n      svgeditClipboard = localStorage.getItem('svgedit_clipboard');\n    } catch (err) {}\n    canvMenu[(svgeditClipboard ? 'en' : 'dis') + 'ableContextMenuItems'](\n      '#paste,#paste_in_place'\n    );\n  }\n  enableOrDisableClipboard();\n\n  window.addEventListener('storage', function (e) {\n    if (e.key !== 'svgedit_clipboard') { return; }\n\n    enableOrDisableClipboard();\n  });\n\n  window.addEventListener('beforeunload', function (e) {\n    // Suppress warning if page is empty\n    if (undoMgr.getUndoStackSize() === 0) {\n      editor.showSaveWarning = false;\n    }\n\n    // showSaveWarning is set to 'false' when the page is saved.\n    if (!curConfig.no_save_warning && editor.showSaveWarning) {\n      // Browser already asks question about closing the page\n      e.returnValue = uiStrings.notification.unsavedChanges; // Firefox needs this when beforeunload set by addEventListener (even though message is not used)\n      return uiStrings.notification.unsavedChanges;\n    }\n    return true;\n  });\n\n  /**\n  * Expose the `uiStrings`.\n  * @function module:SVGEditor.canvas.getUIStrings\n  * @returns {module:SVGEditor.uiStrings}\n  */\n  editor.canvas.getUIStrings = function () {\n    return uiStrings;\n  };\n\n  /**\n  * @returns {Promise} Resolves to boolean indicating `true` if there were no changes\n  *  and `false` after the user confirms.\n  */\n  editor.openPrep = function () {\n    $('#main_menu').hide();\n    if (undoMgr.getUndoStackSize() === 0) {\n      return true;\n    }\n    return $.confirm(uiStrings.notification.QwantToOpen);\n  };\n\n  /**\n   *\n   * @param {Event} e\n   * @returns {undefined}\n   */\n  function onDragEnter (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // and indicator should be displayed here, such as \"drop files here\"\n  }\n\n  /**\n   *\n   * @param {Event} e\n   * @returns {undefined}\n   */\n  function onDragOver (e) {\n    e.stopPropagation();\n    e.preventDefault();\n  }\n\n  /**\n   *\n   * @param {Event} e\n   * @returns {undefined}\n   */\n  function onDragLeave (e) {\n    e.stopPropagation();\n    e.preventDefault();\n    // hypothetical indicator should be removed here\n  }\n  // Use HTML5 File API: http://www.w3.org/TR/FileAPI/\n  // if browser has HTML5 File API support, then we will show the open menu item\n  // and provide a file input to click. When that change event fires, it will\n  // get the text contents of the file and send it to the canvas\n  if (window.FileReader) {\n    /**\n    * @param {Event} e\n    * @returns {undefined}\n    */\n    const importImage = function (e) {\n      $.process_cancel(uiStrings.notification.loadingImage);\n      e.stopPropagation();\n      e.preventDefault();\n      $('#workarea').removeAttr('style');\n      $('#main_menu').hide();\n      const file = (e.type === 'drop') ? e.dataTransfer.files[0] : this.files[0];\n      if (!file) {\n        $('#dialog_box').hide();\n        return;\n      }\n      /* if (file.type === 'application/pdf') { // Todo: Handle PDF imports\n\n      }\n      else */\n      if (!file.type.includes('image')) {\n        return;\n      }\n      // Detected an image\n      // svg handling\n      let reader;\n      if (file.type.includes('svg')) {\n        reader = new FileReader();\n        reader.onloadend = function (ev) {\n          const newElement = svgCanvas.importSvgString(ev.target.result, true);\n          svgCanvas.ungroupSelectedElement();\n          svgCanvas.ungroupSelectedElement();\n          svgCanvas.groupSelectedElements();\n          svgCanvas.alignSelectedElements('m', 'page');\n          svgCanvas.alignSelectedElements('c', 'page');\n          // highlight imported element, otherwise we get strange empty selectbox\n          svgCanvas.selectOnly([newElement]);\n          $('#dialog_box').hide();\n        };\n        reader.readAsText(file);\n      } else {\n        // bitmap handling\n        reader = new FileReader();\n        reader.onloadend = function ({target: {result}}) {\n          /**\n          * Insert the new image until we know its dimensions\n          * @param {Float} width\n          * @param {Float} height\n          * @returns {undefined}\n          */\n          const insertNewImage = function (width, height) {\n            const newImage = svgCanvas.addSVGElementFromJson({\n              element: 'image',\n              attr: {\n                x: 0,\n                y: 0,\n                width,\n                height,\n                id: svgCanvas.getNextId(),\n                style: 'pointer-events:inherit'\n              }\n            });\n            svgCanvas.setHref(newImage, result);\n            svgCanvas.selectOnly([newImage]);\n            svgCanvas.alignSelectedElements('m', 'page');\n            svgCanvas.alignSelectedElements('c', 'page');\n            updateContextPanel();\n            $('#dialog_box').hide();\n          };\n          // create dummy img so we know the default dimensions\n          let imgWidth = 100;\n          let imgHeight = 100;\n          const img = new Image();\n          img.style.opacity = 0;\n          img.onload = function () {\n            imgWidth = img.offsetWidth || img.naturalWidth || img.width;\n            imgHeight = img.offsetHeight || img.naturalHeight || img.height;\n            insertNewImage(imgWidth, imgHeight);\n          };\n          img.src = result;\n        };\n        reader.readAsDataURL(file);\n      }\n    };\n\n    workarea[0].addEventListener('dragenter', onDragEnter);\n    workarea[0].addEventListener('dragover', onDragOver);\n    workarea[0].addEventListener('dragleave', onDragLeave);\n    workarea[0].addEventListener('drop', importImage);\n\n    const open = $('<input type=\"file\">').click(async function () {\n      const ok = await editor.openPrep();\n      if (!ok) { return; }\n      svgCanvas.clear();\n      if (this.files.length === 1) {\n        $.process_cancel(uiStrings.notification.loadingImage);\n        const reader = new FileReader();\n        reader.onloadend = async function (e) {\n          await loadSvgString(e.target.result);\n          updateCanvas();\n        };\n        reader.readAsText(this.files[0]);\n      }\n    });\n    $('#tool_open').show().prepend(open);\n\n    const imgImport = $('<input type=\"file\">').change(importImage);\n    $('#tool_import').show().prepend(imgImport);\n  }\n\n  updateCanvas(true);\n  //  const revnums = 'svg-editor.js ($Rev$) ';\n  //  revnums += svgCanvas.getVersion();\n  //  $('#copyright')[0].setAttribute('title', revnums);\n\n  const loadedExtensionNames = [];\n  /**\n  * @function module:SVGEditor.setLang\n  * @param {string} lang The language code\n  * @param {module:locale.LocaleStrings} allStrings See {@tutorial LocaleDocs}\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langReady\n  * @fires module:svgcanvas.SvgCanvas#event:ext-langChanged\n  * @returns {Promise} A Promise which resolves to `undefined`\n  */\n  const setLang = editor.setLang = async function (lang, allStrings) {\n    editor.langChanged = true;\n    $.pref('lang', lang);\n    $('#lang_select').val(lang);\n    if (!allStrings) {\n      return;\n    }\n    $.extend(uiStrings, allStrings);\n\n    // const notif = allStrings.notification; // Currently unused\n    // $.extend will only replace the given strings\n    const oldLayerName = $('#layerlist tr.layersel td.layername').text();\n    const renameLayer = (oldLayerName === uiStrings.common.layer + ' 1');\n\n    svgCanvas.setUiStrings(allStrings);\n    Actions.setTitles();\n\n    if (renameLayer) {\n      svgCanvas.renameCurrentLayer(uiStrings.common.layer + ' 1');\n      populateLayers();\n    }\n\n    // In case extensions loaded before the locale, now we execute a callback on them\n    if (extsPreLang.length) {\n      await Promise.all(extsPreLang.map((ext) => {\n        loadedExtensionNames.push(ext.name);\n        return ext.langReady({\n          lang,\n          uiStrings,\n          importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})\n        });\n      }));\n      extsPreLang.length = 0;\n    } else {\n      loadedExtensionNames.forEach((loadedExtensionName) => {\n        this.runExtension(\n          loadedExtensionName,\n          'langReady',\n          /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */ {\n            lang, uiStrings, importLocale: getImportLocale({defaultLang: lang, defaultName: loadedExtensionName})\n          }\n        );\n      });\n    }\n    svgCanvas.runExtensions('langChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */ lang);\n\n    // Update flyout tooltips\n    setFlyoutTitles();\n\n    // Copy title for certain tool elements\n    const elems = {\n      '#stroke_color': '#tool_stroke .icon_label, #tool_stroke .color_block',\n      '#fill_color': '#tool_fill label, #tool_fill .color_block',\n      '#linejoin_miter': '#cur_linejoin',\n      '#linecap_butt': '#cur_linecap'\n    };\n\n    $.each(elems, function (source, dest) {\n      $(dest).attr('title', $(source)[0].title);\n    });\n\n    // Copy alignment titles\n    $('#multiselected_panel div[id^=tool_align]').each(function () {\n      $('#tool_pos' + this.id.substr(10))[0].title = this.title;\n    });\n  };\n  localeInit(\n    /**\n    * @implements {module:locale.LocaleEditorInit}\n    */\n    {\n      /**\n      * Gets an array of results from extensions with a `addLangData` method,\n      * returning an object with a `data` property set to its locales (to be\n      * merged with regular locales).\n      * @param {string} langParam\n      * @fires module:svgcanvas.SvgCanvas#event:ext-addLangData\n      * @todo Can we forego this in favor of `langReady` (or forego `langReady`)?\n      * @returns {module:locale.AddLangExtensionLocaleData[]}\n      */\n      addLangData (langParam) {\n        return svgCanvas.runExtensions(\n          'addLangData',\n          /**\n           * @function\n           * @type {module:svgcanvas.ExtensionVarBuilder}\n           * @param {string} name\n           * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}\n           */\n          (name) => { // We pass in a function as we don't know the extension name here when defining this `addLangData` method\n            return {\n              lang: langParam,\n              importLocale: getImportLocale({defaultLang: langParam, defaultName: name})\n            };\n          },\n          true\n        );\n      },\n      curConfig\n    }\n  );\n  // Load extensions\n  // Bit of a hack to run extensions in local Opera/IE9\n  if (document.location.protocol === 'file:') {\n    setTimeout(extAndLocaleFunc, 100);\n  } else {\n    // Returns a promise (if we wanted to fire 'extensions-loaded' event, potentially useful to hide interface as some extension locales are only available after this)\n    extAndLocaleFunc();\n  }\n};\n\n/**\n* @callback module:SVGEditor.ReadyCallback\n* @returns {Promise|undefined}\n*/\n/**\n* Queues a callback to be invoked when the editor is ready (or\n*   to be invoked immediately if it is already ready--i.e.,\n*   if `runCallbacks` has been run).\n* @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke\n* @returns {Promise} Resolves when all callbacks, including the supplied have resolved\n*/\neditor.ready = function (cb) { // eslint-disable-line promise/prefer-await-to-callbacks\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    if (isReady) {\n      resolve(cb()); // eslint-disable-line callback-return, promise/prefer-await-to-callbacks\n      return;\n    }\n    callbacks.push([cb, resolve, reject]);\n  });\n};\n\n/**\n* Invokes the callbacks previous set by `svgEditor.ready`\n* @returns {Promise} Resolves to `undefined` if all callbacks succeeded and rejects otherwise\n*/\neditor.runCallbacks = async function () {\n  try {\n    await Promise.all(callbacks.map(([cb]) => {\n      return cb(); // eslint-disable-line promise/prefer-await-to-callbacks\n    }));\n  } catch (err) {\n    callbacks.forEach(([, , reject]) => {\n      reject();\n    });\n    throw err;\n  }\n  callbacks.forEach(([, resolve]) => {\n    resolve();\n  });\n  isReady = true;\n};\n\n/**\n* @param {string} str The SVG string to load\n* @param {PlainObject} [opts={}]\n* @param {boolean} [opts.noAlert=false] Option to avoid alert to user and instead get rejected promise\n* @returns {Promise}\n*/\neditor.loadFromString = function (str, {noAlert} = {}) {\n  editor.ready(async function () {\n    try {\n      await loadSvgString(str, {noAlert});\n    } catch (err) {\n      if (noAlert) {\n        throw err;\n      }\n    }\n  });\n};\n\n/**\n* Not presently in use.\n* @param {PlainObject} featList\n* @returns {undefined}\n*/\neditor.disableUI = function (featList) {\n  // $(function () {\n  //   $('#tool_wireframe, #tool_image, #main_button, #tool_source, #sidepanels').remove();\n  //   $('#tools_top').css('left', 5);\n  // });\n};\n\n/**\n * @callback module:SVGEditor.URLLoadCallback\n * @param {boolean} success\n * @returns {undefined}\n */\n/**\n* @param {string} url URL from which to load an SVG string via Ajax\n* @param {PlainObject} [opts={}] May contain properties: `cache`, `callback`\n* @param {boolean} [opts.cache]\n* @param {boolean} [opts.noAlert]\n* @returns {Promise} Resolves to `undefined` or rejects upon bad loading of\n*   the SVG (or upon failure to parse the loaded string) when `noAlert` is\n*   enabled\n*/\neditor.loadFromURL = function (url, {cache, noAlert} = {}) {\n  return editor.ready(function () {\n    return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n      $.ajax({\n        url,\n        dataType: 'text',\n        cache: Boolean(cache),\n        beforeSend () {\n          $.process_cancel(uiStrings.notification.loadingImage);\n        },\n        success (str) {\n          resolve(loadSvgString(str, {noAlert}));\n        },\n        error (xhr, stat, err) {\n          if (xhr.status !== 404 && xhr.responseText) {\n            resolve(loadSvgString(xhr.responseText, {noAlert}));\n            return;\n          }\n          if (noAlert) {\n            reject(new Error('URLLoadFail'));\n            return;\n          }\n          $.alert(uiStrings.notification.URLLoadFail + ': \\n' + err);\n          resolve();\n        },\n        complete () {\n          $('#dialog_box').hide();\n        }\n      });\n    });\n  });\n};\n\n/**\n* @param {string} str The Data URI to base64-decode (if relevant) and load\n* @param {PlainObject} [opts={}]\n* @param {boolean} [opts.noAlert]\n* @returns {Promise} Resolves to `undefined` and rejects if loading SVG string fails and `noAlert` is enabled\n*/\neditor.loadFromDataURI = function (str, {noAlert} = {}) {\n  editor.ready(function () {\n    let base64 = false;\n    let pre = str.match(/^data:image\\/svg\\+xml;base64,/);\n    if (pre) {\n      base64 = true;\n    } else {\n      pre = str.match(/^data:image\\/svg\\+xml(?:;(?:utf8)?)?,/);\n    }\n    if (pre) {\n      pre = pre[0];\n    }\n    const src = str.slice(pre.length);\n    return loadSvgString(base64 ? Utils.decode64(src) : decodeURIComponent(src), {noAlert});\n  });\n};\n\n/**\n * @param {string} name Used internally; no need for i18n.\n * @param {module:svgcanvas.ExtensionInitCallback} init Config to be invoked on this module\n * @param {module:SVGEditor~ImportLocale} importLocale Importer defaulting to pth with current extension name and locale\n * @throws {Error} If called too early\n * @returns {Promise} Resolves to `undefined`\n*/\neditor.addExtension = function (name, init, importLocale) {\n  // Note that we don't want this on editor.ready since some extensions\n  // may want to run before then (like server_opensave).\n  // $(function () {\n  if (!svgCanvas) {\n    throw new Error('Extension added too early');\n  }\n  return svgCanvas.addExtension.call(this, name, init, importLocale);\n  // });\n};\n\n// Defer injection to wait out initial menu processing. This probably goes\n//    away once all context menu behavior is brought to context menu.\neditor.ready(() => {\n  injectExtendedContextMenuItemsIntoDom();\n});\n\nlet extensionsAdded = false;\nconst messageQueue = [];\n/**\n * @param {PlainObject} info\n * @param {Any} info.data\n * @param {string} info.origin\n * @fires module:svgcanvas.SvgCanvas#event:message\n * @returns {undefined}\n */\nconst messageListener = ({data, origin}) => { // eslint-disable-line no-shadow\n  // console.log('data, origin, extensionsAdded', data, origin, extensionsAdded);\n  const messageObj = {data, origin};\n  if (!extensionsAdded) {\n    messageQueue.push(messageObj);\n  } else {\n    // Extensions can handle messages at this stage with their own\n    //  canvas `message` listeners\n    svgCanvas.call('message', messageObj);\n  }\n};\nwindow.addEventListener('message', messageListener);\n\n// Run init once DOM is loaded\n// jQuery(editor.init);\n\n(async () => {\ntry {\n  // We wait a micro-task to let the svgEditor variable be defined for module checks\n  await Promise.resolve();\n  editor.init();\n} catch (err) {\n  console.error(err); // eslint-disable-line no-console\n}\n})();\n\nexport default editor;\n","// Todo: Update: https://github.com/jeresig/jquery.hotkeys\n/*\n * jQuery Hotkeys Plugin\n * Copyright 2010, John Resig\n * Dual licensed under the MIT or GPL Version 2 licenses.\n *\n * http://github.com/jeresig/jquery.hotkeys\n *\n * Based upon the plugin by Tzury Bar Yochay:\n * http://github.com/tzuryby/hotkeys\n *\n * Original idea by:\n * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/\n*/\n\n// We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`\n\nexport default function(b){b.hotkeys={version:\"0.8\",specialKeys:{8:\"backspace\",9:\"tab\",13:\"return\",16:\"shift\",17:\"ctrl\",18:\"alt\",19:\"pause\",20:\"capslock\",27:\"esc\",32:\"space\",33:\"pageup\",34:\"pagedown\",35:\"end\",36:\"home\",37:\"left\",38:\"up\",39:\"right\",40:\"down\",45:\"insert\",46:\"del\",96:\"0\",97:\"1\",98:\"2\",99:\"3\",100:\"4\",101:\"5\",102:\"6\",103:\"7\",104:\"8\",105:\"9\",106:\"*\",107:\"+\",109:\"-\",110:\".\",111:\"/\",112:\"f1\",113:\"f2\",114:\"f3\",115:\"f4\",116:\"f5\",117:\"f6\",118:\"f7\",119:\"f8\",120:\"f9\",121:\"f10\",122:\"f11\",123:\"f12\",144:\"numlock\",145:\"scroll\",191:\"/\",224:\"meta\",219:\"[\",221:\"]\"},shiftNums:{\"`\":\"~\",\"1\":\"!\",\"2\":\"@\",\"3\":\"#\",\"4\":\"$\",\"5\":\"%\",\"6\":\"^\",\"7\":\"&\",\"8\":\"*\",\"9\":\"(\",\"0\":\")\",\"-\":\"_\",\"=\":\"+\",\";\":\": \",\"'\":'\"',\",\":\"<\",\".\":\">\",\"/\":\"?\",\"\\\\\":\"|\"}};function a(d){if(typeof d.data!==\"string\"){return}var c=d.handler,e=d.data.toLowerCase().split(\" \");d.handler=function(n){if(this!==n.target&&(n.which !== 27 && (/textarea|select/i.test(n.target.nodeName)||n.target.type===\"text\"))){return}var h=n.type!==\"keypress\"&&b.hotkeys.specialKeys[n.which],o=String.fromCharCode(n.which).toLowerCase(),k,m=\"\",g={};if(n.altKey&&h!==\"alt\"){m+=\"alt+\"}if(n.ctrlKey&&h!==\"ctrl\"){m+=\"ctrl+\"}if(n.metaKey&&!n.ctrlKey&&h!==\"meta\"){m+=\"meta+\"}if(n.shiftKey&&h!==\"shift\"){m+=\"shift+\"}if(h){g[m+h]=true}else{g[m+o]=true;g[m+b.hotkeys.shiftNums[o]]=true;if(m===\"shift+\"){g[b.hotkeys.shiftNums[o]]=true}}for(var j=0,f=e.length;j<f;j++){if(g[e[j]]){return c.apply(this,arguments)}}}}b.each([\"keydown\",\"keyup\",\"keypress\"],function(){b.event.special[this]={add:a}})\n\nreturn b;\n}\n","/*\n * Todo: Update to latest at https://github.com/cowboy/jquery-bbq ?\n * jQuery BBQ: Back Button & Query Library - v1.2.1 - 2/17/2010\n * http://benalman.com/projects/jquery-bbq-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n\n// For sake of modules, added this wrapping export and changed `this` to `window`\nexport default function (jQuery) {\n\n(function($,p){var i,m=Array.prototype.slice,r=decodeURIComponent,a=$.param,c,l,v,b=$.bbq=$.bbq||{},q,u,j,e=$.event.special,d=\"hashchange\",A=\"querystring\",D=\"fragment\",y=\"elemUrlAttr\",g=\"location\",k=\"href\",t=\"src\",x=/^.*\\?|#.*$/g,w=/^.*\\#/,h,C={};function E(F){return typeof F===\"string\"}function B(G){var F=m.call(arguments,1);return function(){return G.apply(this,F.concat(m.call(arguments)))}}function n(F){return F.replace(/^[^#]*#?(.*)$/,\"$1\")}function o(F){return F.replace(/(?:^[^?#]*\\?([^#]*).*$)?.*/,\"$1\")}function f(H,M,F,I,G){var O,L,K,N,J;if(I!==i){K=F.match(H?/^([^#]*)\\#?(.*)$/:/^([^#?]*)\\??([^#]*)(#?.*)/);J=K[3]||\"\";if(G===2&&E(I)){L=I.replace(H?w:x,\"\")}else{N=l(K[2]);I=E(I)?l[H?D:A](I):I;L=G===2?I:G===1?$.extend({},I,N):$.extend({},N,I);L=a(L);if(H){L=L.replace(h,r)}}O=K[1]+(H?\"#\":L||!K[1]?\"?\":\"\")+L+J}else{O=M(F!==i?F:p[g][k])}return O}a[A]=B(f,0,o);a[D]=c=B(f,1,n);c.noEscape=function(G){G=G||\"\";var F=$.map(G.split(\"\"),encodeURIComponent);h=new RegExp(F.join(\"|\"),\"g\")};c.noEscape(\",/\");$.deparam=l=function(I,F){var H={},G={\"true\":!0,\"false\":!1,\"null\":null};$.each(I.replace(/\\+/g,\" \").split(\"&\"),function(L,Q){var K=Q.split(\"=\"),P=r(K[0]),J,O=H,M=0,R=P.split(\"][\"),N=R.length-1;if(/\\[/.test(R[0])&&/\\]$/.test(R[N])){R[N]=R[N].replace(/\\]$/,\"\");R=R.shift().split(\"[\").concat(R);N=R.length-1}else{N=0}if(K.length===2){J=r(K[1]);if(F){J=J&&!isNaN(J)?+J:J===\"undefined\"?i:G[J]!==i?G[J]:J}if(N){for(;M<=N;M++){P=R[M]===\"\"?O.length:R[M];O=O[P]=M<N?O[P]||(R[M+1]&&isNaN(R[M+1])?{}:[]):J}}else{if($.isArray(H[P])){H[P].push(J)}else{if(H[P]!==i){H[P]=[H[P],J]}else{H[P]=J}}}}else{if(P){H[P]=F?i:\"\"}}});return H};function z(H,F,G){if(F===i||typeof F===\"boolean\"){G=F;F=a[H?D:A]()}else{F=E(F)?F.replace(H?w:x,\"\"):F}return l(F,G)}l[A]=B(z,0);l[D]=v=B(z,1);$[y]||($[y]=function(F){return $.extend(C,F)})({a:k,base:k,iframe:t,img:t,input:t,form:\"action\",link:k,script:t});j=$[y];function s(I,G,H,F){if(!E(H)&&typeof H!==\"object\"){F=H;H=G;G=i}return this.each(function(){var L=$(this),J=G||j()[(this.nodeName||\"\").toLowerCase()]||\"\",K=J&&L.attr(J)||\"\";L.attr(J,a[I](K,H,F))})}$.fn[A]=B(s,A);$.fn[D]=B(s,D);b.pushState=q=function(I,F){if(E(I)&&/^#/.test(I)&&F===i){F=2}var H=I!==i,G=c(p[g][k],H?I:{},H?F:2);p[g][k]=G+(/#/.test(G)?\"\":\"#\")};b.getState=u=function(F,G){return F===i||typeof F===\"boolean\"?v(F):v(G)[F]};b.removeState=function(F){var G={};if(F!==i){G=u();$.each($.isArray(F)?F:arguments,function(I,H){delete G[H]})}q(G,2)};e[d]=$.extend(e[d],{add:function(F){var H;function G(J){var I=J[D]=c();J.getState=function(K,L){return K===i||typeof K===\"boolean\"?l(I,K):l(I,L)[K]};H.apply(this,arguments)}if($.isFunction(F)){H=F;return G}else{H=F.handler;F.handler=G}}})})(jQuery,window);\n/*\n * jQuery hashchange event - v1.2 - 2/11/2010\n * http://benalman.com/projects/jquery-hashchange-plugin/\n *\n * Copyright (c) 2010 \"Cowboy\" Ben Alman\n * Dual licensed under the MIT and GPL licenses.\n * http://benalman.com/about/license/\n */\n(function($,i,b){var j,k=$.event.special,c=\"location\",d=\"hashchange\",l=\"href\",f=$.browser,g=document.documentMode,h=f.msie&&(g===b||g<8),e=\"on\"+d in i&&!h;function a(m){m=m||i[c][l];return m.replace(/^[^#]*#?(.*)$/,\"$1\")}$[d+\"Delay\"]=100;k[d]=$.extend(k[d],{setup:function(){if(e){return false}$(j.start)},teardown:function(){if(e){return false}$(j.stop)}});j=(function(){var m={},r,n,o,q;function p(){o=q=function(s){return s};if(h){n=$('<iframe src=\"javascript:0\"/>').hide().insertAfter(\"body\")[0].contentWindow;q=function(){return a(n.document[c][l])};o=function(u,s){if(u!==s){var t=n.document;t.open().close();t[c].hash=\"#\"+u}};o(a())}}m.start=function(){if(r){return}var t=a();o||p();(function s(){var v=a(),u=q(t);if(v!==t){o(t=v,u);$(i).trigger(d)}else{if(u!==t){i[c][l]=i[c][l].replace(/#.*/,\"\")+\"#\"+u}}r=setTimeout(s,$[d+\"Delay\"])})()};m.stop=function(){if(!n){r&&clearTimeout(r);r=0}};return m})()})(jQuery,window);\n\nreturn jQuery;\n}\n","// Todo: Move to own module (and have it import a modular base64 encoder)\nimport {encode64} from '../utilities.js';\n/**\n * SVG Icon Loader 2.0\n *\n * jQuery Plugin for loading SVG icons from a single file\n *\n * Adds {@link external:jQuery.svgIcons}, {@link external:jQuery.getSvgIcon}, {@link external:jQuery.resizeSvgIcons}\n *\n * How to use:\n\n1. Create the SVG master file that includes all icons:\n\nThe master SVG icon-containing file is an SVG file that contains\n`<g>` elements. Each `<g>` element should contain the markup of an SVG\nicon. The `<g>` element has an ID that should\ncorrespond with the ID of the HTML element used on the page that should contain\nor optionally be replaced by the icon. Additionally, one empty element should be\nadded at the end with id \"svg_eof\".\n\n2. Optionally create fallback raster images for each SVG icon.\n\n3. Include the jQuery and the SVG Icon Loader scripts on your page.\n\n4. Run `$.svgIcons()` when the document is ready. See its signature\n\n5. To access an icon at a later point without using the callback, use this:\n  `$.getSvgIcon(id (string), uniqueClone (boolean))`;\n\nThis will return the icon (as jQuery object) with a given ID.\n\n6. To resize icons at a later point without using the callback, use this:\n  `$.resizeSvgIcons(resizeOptions)` (use the same way as the \"resize\" parameter)\n *\n * @module jQuerySVGIcons\n * @license MIT\n * @copyright (c) 2009 Alexis Deveria\n * {@link http://a.deveria.com}\n * @example usage #1:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg'); // The SVG file that contains all icons\n  // No options have been set, so all icons will automatically be inserted\n  // into HTML elements that match the same IDs.\n});\n\n* @example usage #2:\n\n$(function() {\n  $.svgIcons('my_icon_set.svg', { // The SVG file that contains all icons\n    callback (icons) { // Custom callback function that sets click\n                  // events for each icon\n      $.each(icons, function(id, icon) {\n        icon.click(function() {\n          alert('You clicked on the icon with id ' + id);\n        });\n      });\n    }\n  }); //The SVG file that contains all icons\n});\n\n* @example usage #3:\n\n$(function() {\n  $.svgIcons('my_icon_set.svgz', { // The SVGZ file that contains all icons\n    w: 32,  // All icons will be 32px wide\n    h: 32,  // All icons will be 32px high\n    fallback_path: 'icons/',  // All fallback files can be found here\n    fallback: {\n      '#open_icon': 'open.png',  // The \"open.png\" will be appended to the\n                    // HTML element with ID \"open_icon\"\n      '#close_icon': 'close.png',\n      '#save_icon': 'save.png'\n    },\n    placement: {'.open_icon','open'}, // The \"open\" icon will be added\n                    // to all elements with class \"open_icon\"\n    resize () {\n      '#save_icon .svg_icon': 64  // The \"save\" icon will be resized to 64 x 64px\n    },\n\n    callback (icons) { // Sets background color for \"close\" icon\n      icons['close'].css('background','red');\n    },\n\n    svgz: true // Indicates that an SVGZ file is being used\n\n  })\n});\n*/\n\n/**\n* @callback module:jQuerySVGIcons.SVGIconsLoadedCallback\n* @param {PlainObject.<string, external:jQuery>} svgIcons IDs keyed to jQuery objects of images\n*/\n\n/**\n * @function module:jQuerySVGIcons.jQuerySVGIcons\n * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object\n * @returns {external:jQuery} The enhanced jQuery object\n*/\nexport default function jQueryPluginSVGIcons ($) {\n  const svgIcons = {};\n\n  let fixIDs;\n  /**\n   * List of raster images with each\n   * key being the SVG icon ID to replace, and the value the image file name\n   * @typedef {PlainObject.<string, string>} external:jQuery.svgIcons.Fallback\n  */\n  /**\n  * @function external:jQuery.svgIcons\n  * @param {string} file The location of a local SVG or SVGz file\n  * @param {PlainObject} [opts]\n  * @param {Float} [opts.w] The icon widths\n  * @param {Float} [opts.h] The icon heights\n  * @param {external:jQuery.svgIcons.Fallback} [opts.fallback]\n  * @param {string} [opts.fallback_path] The path to use for all images\n    listed under \"fallback\"\n  * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,\n    rather than include the SVG icon.\n  * @param {PlainObject.<string, string>} [opts.placement] List with selectors for keys and SVG icon ids\n    as values. This provides a custom method of adding icons.\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} [opts.resize] List with selectors for keys and numbers\n    as values. This allows an easy way to resize specific icons.\n  * @param {module:jQuerySVGIcons.SVGIconsLoadedCallback} [opts.callback] A function to call when all icons have been loaded.\n  * @param {boolean} [opts.id_match=true] Automatically attempt to match SVG icon ids with\n    corresponding HTML id\n  * @param {boolean} [opts.no_img] Prevent attempting to convert the icon into an `<img>`\n    element (may be faster, help for browser consistency)\n  * @param {boolean} [opts.svgz] Indicate that the file is an SVGZ file, and thus not to\n    parse as XML. SVGZ files add compression benefits, but getting data from\n    them fails in Firefox 2 and older.\n  * @returns {undefined}\n  */\n  $.svgIcons = function (file, opts = {}) {\n    const svgns = 'http://www.w3.org/2000/svg',\n      xlinkns = 'http://www.w3.org/1999/xlink',\n      iconW = opts.w || 24,\n      iconH = opts.h || 24;\n    let elems, svgdoc, testImg,\n      iconsMade = false,\n      dataLoaded = false,\n      loadAttempts = 0;\n    const isOpera = Boolean(window.opera),\n      // ua = navigator.userAgent,\n      // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),\n      dataPre = 'data:image/svg+xml;charset=utf-8;base64,';\n\n    let dataEl;\n    if (opts.svgz) {\n      dataEl = $('<object data=\"' + file + '\" type=image/svg+xml>').appendTo('body').hide();\n      try {\n        svgdoc = dataEl[0].contentDocument;\n        dataEl.load(getIcons);\n        getIcons(0, true); // Opera will not run \"load\" event if file is already cached\n      } catch (err1) {\n        useFallback();\n      }\n    } else {\n      const parser = new DOMParser();\n      $.ajax({\n        url: file,\n        dataType: 'string',\n        success (data) {\n          if (!data) {\n            $(useFallback);\n            return;\n          }\n          svgdoc = parser.parseFromString(data, 'text/xml');\n          $(function () {\n            getIcons('ajax');\n          });\n        },\n        error (err) {\n          // TODO: Fix Opera widget icon bug\n          if (window.opera) {\n            $(function () {\n              useFallback();\n            });\n          } else if (err.responseText) {\n            svgdoc = parser.parseFromString(err.responseText, 'text/xml');\n\n            if (!svgdoc.childNodes.length) {\n              $(useFallback);\n            }\n            $(function () {\n              getIcons('ajax');\n            });\n          } else {\n            $(useFallback);\n          }\n        }\n      });\n    }\n\n    /**\n     *\n     * @param {\"ajax\"|0|undefined} evt\n     * @param {boolean} [noWait]\n     * @returns {undefined}\n     */\n    function getIcons (evt, noWait) {\n      if (evt !== 'ajax') {\n        if (dataLoaded) return;\n        // Webkit sometimes says svgdoc is undefined, other times\n        // it fails to load all nodes. Thus we must make sure the \"eof\"\n        // element is loaded.\n        svgdoc = dataEl[0].contentDocument; // Needed again for Webkit\n        const isReady = (svgdoc && svgdoc.getElementById('svg_eof'));\n        if (!isReady && !(noWait && isReady)) {\n          loadAttempts++;\n          if (loadAttempts < 50) {\n            setTimeout(getIcons, 20);\n          } else {\n            useFallback();\n            dataLoaded = true;\n          }\n          return;\n        }\n        dataLoaded = true;\n      }\n\n      elems = $(svgdoc.firstChild).children(); // .getElementsByTagName('foreignContent');\n\n      if (!opts.no_img) {\n        const testSrc = dataPre + 'PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzUiIGhlaWdodD0iMjc1Ij48L3N2Zz4%3D';\n\n        testImg = $(new Image()).attr({\n          src: testSrc,\n          width: 0,\n          height: 0\n        }).appendTo('body')\n          .load(function () {\n            // Safari 4 crashes, Opera and Chrome don't\n            makeIcons(true);\n          }).error(function () {\n            makeIcons();\n          });\n      } else {\n        setTimeout(function () {\n          if (!iconsMade) makeIcons();\n        }, 500);\n      }\n    }\n\n    /**\n     *\n     * @param {external:jQuery} target\n     * @param {external:jQuery} icon A wrapped `defs` or Image\n     * @param {string} id SVG icon ID\n     * @param {string} setID\n     * @returns {undefined}\n     */\n    function setIcon (target, icon, id, setID) {\n      if (isOpera) icon.css('visibility', 'hidden');\n      if (opts.replace) {\n        if (setID) icon.attr('id', id);\n        const cl = target.attr('class');\n        if (cl) icon.attr('class', 'svg_icon ' + cl);\n        target.replaceWith(icon);\n      } else {\n        target.append(icon);\n      }\n      if (isOpera) {\n        setTimeout(function () {\n          icon.removeAttr('style');\n        }, 1);\n      }\n    }\n\n    let holder;\n    /**\n     * @param {external:jQuery} icon A wrapped `defs` or Image\n     * @param {string} id SVG icon ID\n     * @returns {undefined}\n     */\n    function addIcon (icon, id) {\n      if (opts.id_match === undefined || opts.id_match !== false) {\n        setIcon(holder, icon, id, true);\n      }\n      svgIcons[id] = icon;\n    }\n\n    /**\n     *\n     * @param {boolean} [toImage]\n     * @param {external:jQuery.svgIcons.Fallback} [fallback]\n     * @returns {undefined}\n     */\n    function makeIcons (toImage = false, fallback) {\n      if (iconsMade) return;\n      if (opts.no_img) toImage = false;\n\n      let tempHolder;\n      if (toImage) {\n        tempHolder = $(document.createElement('div'));\n        tempHolder.hide().appendTo('body');\n      }\n      if (fallback) {\n        const path = opts.fallback_path || '';\n        $.each(fallback, function (id, imgsrc) {\n          holder = $('#' + id);\n          const icon = $(new Image())\n            .attr({\n              class: 'svg_icon',\n              src: path + imgsrc,\n              width: iconW,\n              height: iconH,\n              alt: 'icon'\n            });\n\n          addIcon(icon, id);\n        });\n      } else {\n        const len = elems.length;\n        for (let i = 0; i < len; i++) {\n          const elem = elems[i];\n          const {id} = elem;\n          if (id === 'svg_eof') break;\n          holder = $('#' + id);\n          const svgroot = document.createElementNS(svgns, 'svg');\n          // Per https://www.w3.org/TR/xml-names11/#defaulting, the namespace for\n          // attributes should have no value.\n          svgroot.setAttribute('viewBox', [0, 0, iconW, iconH].join(' '));\n\n          let svg = elem.getElementsByTagNameNS(svgns, 'svg')[0];\n\n          // Make flexible by converting width/height to viewBox\n          const w = svg.getAttribute('width');\n          const h = svg.getAttribute('height');\n          svg.removeAttribute('width');\n          svg.removeAttribute('height');\n\n          const vb = svg.getAttribute('viewBox');\n          if (!vb) {\n            svg.setAttribute('viewBox', [0, 0, w, h].join(' '));\n          }\n\n          // Not using jQuery to be a bit faster\n          svgroot.setAttribute('xmlns', svgns);\n          svgroot.setAttribute('width', iconW);\n          svgroot.setAttribute('height', iconH);\n          svgroot.setAttribute('xmlns:xlink', xlinkns);\n          svgroot.setAttribute('class', 'svg_icon');\n\n          // Without cloning, Firefox will make another GET request.\n          // With cloning, causes issue in Opera/Win/Non-EN\n          if (!isOpera) svg = svg.cloneNode(true);\n\n          svgroot.append(svg);\n\n          let icon;\n          if (toImage) {\n            tempHolder.empty().append(svgroot);\n            const str = dataPre + encode64(unescape(encodeURIComponent(new XMLSerializer().serializeToString(svgroot))));\n            icon = $(new Image())\n              .attr({class: 'svg_icon', src: str});\n          } else {\n            icon = fixIDs($(svgroot), i);\n          }\n          addIcon(icon, id);\n        }\n      }\n\n      if (opts.placement) {\n        $.each(opts.placement, function (sel, id) {\n          if (!svgIcons[id]) return;\n          $(sel).each(function (i) {\n            let copy = svgIcons[id].clone();\n            if (i > 0 && !toImage) copy = fixIDs(copy, i, true);\n            setIcon($(this), copy, id);\n          });\n        });\n      }\n      if (!fallback) {\n        if (toImage) tempHolder.remove();\n        if (dataEl) dataEl.remove();\n        if (testImg) testImg.remove();\n      }\n      if (opts.resize) $.resizeSvgIcons(opts.resize);\n      iconsMade = true;\n\n      if (opts.callback) opts.callback(svgIcons);\n    }\n\n    fixIDs = function (svgEl, svgNum, force) {\n      const defs = svgEl.find('defs');\n      if (!defs.length) return svgEl;\n\n      let idElems;\n      if (isOpera) {\n        idElems = defs.find('*').filter(function () {\n          return Boolean(this.id);\n        });\n      } else {\n        idElems = defs.find('[id]');\n      }\n\n      const allElems = svgEl[0].getElementsByTagName('*'),\n        len = allElems.length;\n\n      idElems.each(function (i) {\n        const {id} = this;\n        /*\n        const noDupes = ($(svgdoc).find('#' + id).length <= 1);\n        if (isOpera) noDupes = false; // Opera didn't clone svgEl, so not reliable\n        if(!force && noDupes) return;\n        */\n        const newId = 'x' + id + svgNum + i;\n        this.id = newId;\n\n        const oldVal = 'url(#' + id + ')';\n        const newVal = 'url(#' + newId + ')';\n\n        // Selector method, possibly faster but fails in Opera / jQuery 1.4.3\n        //  svgEl.find('[fill=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('fill', 'url(#' + newId + ')');\n        //  }).end().find('[stroke=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('stroke', 'url(#' + newId + ')');\n        //  }).end().find('use').each(function() {\n        //    if(this.getAttribute('xlink:href') == '#' + id) {\n        //      this.setAttributeNS(xlinkns,'href','#' + newId);\n        //    }\n        //  }).end().find('[filter=\"url(#' + id + ')\"]').each(function() {\n        //    this.setAttribute('filter', 'url(#' + newId + ')');\n        //  });\n\n        for (i = 0; i < len; i++) {\n          const elem = allElems[i];\n          if (elem.getAttribute('fill') === oldVal) {\n            elem.setAttribute('fill', newVal);\n          }\n          if (elem.getAttribute('stroke') === oldVal) {\n            elem.setAttribute('stroke', newVal);\n          }\n          if (elem.getAttribute('filter') === oldVal) {\n            elem.setAttribute('filter', newVal);\n          }\n        }\n      });\n      return svgEl;\n    };\n\n    /**\n     * @returns {undefined}\n     */\n    function useFallback () {\n      if (file.includes('.svgz')) {\n        const regFile = file.replace('.svgz', '.svg');\n        if (window.console) {\n          console.log('.svgz failed, trying with .svg'); // eslint-disable-line no-console\n        }\n        $.svgIcons(regFile, opts);\n      } else if (opts.fallback) {\n        makeIcons(false, opts.fallback);\n      }\n    }\n  };\n\n  /**\n  * @function external:jQuery.getSvgIcon\n  * @param {string} id\n  * @param {boolean} uniqueClone Whether to clone\n  * @returns {external:jQuery} The icon (optionally cloned)\n  */\n  $.getSvgIcon = function (id, uniqueClone) {\n    let icon = svgIcons[id];\n    if (uniqueClone && icon) {\n      icon = fixIDs(icon, 0, true).clone(true);\n    }\n    return icon;\n  };\n\n  /**\n  * @typedef {GenericArray} module:jQuerySVGIcons.Dimensions\n  * @property {Integer} length 2\n  * @property {Float} 0 Width\n  * @property {Float} 1 Height\n  */\n\n  /**\n  * If a Float is used, it will represent width and height. Arrays contain the width and height.\n  * @typedef {module:jQuerySVGIcons.Dimensions|Float} module:jQuerySVGIcons.Size\n  */\n\n  /**\n  * @function external:jQuery.resizeSvgIcons\n  * @param {PlainObject.<string, module:jQuerySVGIcons.Size>} obj Object with selectors as keys. The values are sizes.\n  * @returns {undefined}\n  */\n  $.resizeSvgIcons = function (obj) {\n    // FF2 and older don't detect .svg_icon, so we change it detect svg elems instead\n    const changeSel = !$('.svg_icon:first').length;\n    $.each(obj, function (sel, size) {\n      const arr = Array.isArray(size);\n      const w = arr ? size[0] : size,\n        h = arr ? size[1] : size;\n      if (changeSel) {\n        sel = sel.replace(/\\.svg_icon/g, 'svg');\n      }\n      $(sel).each(function () {\n        this.setAttribute('width', w);\n        this.setAttribute('height', h);\n        if (window.opera && window.widget) {\n          this.parentNode.style.width = w + 'px';\n          this.parentNode.style.height = h + 'px';\n        }\n      });\n    });\n  };\n  return $;\n}\n","/**\n * SpinButton control\n *\n * Adds bells and whistles to any ordinary textbox to\n * make it look and feel like a SpinButton Control.\n *\n * Supplies {@link external:jQuery.fn.SpinButton} (and also {@link external:jQuery.loadingStylesheets})\n *\n * Originally written by George Adamson, Software Unity (george.jquery@softwareunity.com) August 2006.\n * - Added min/max options\n * - Added step size option\n * - Added bigStep (page up/down) option\n *\n * Modifications made by Mark Gibson, (mgibson@designlinks.net) September 2006:\n * - Converted to jQuery plugin\n * - Allow limited or unlimited min/max values\n * - Allow custom class names, and add class to input element\n * - Removed global vars\n * - Reset (to original or through config) when invalid value entered\n * - Repeat whilst holding mouse button down (with initial pause, like keyboard repeat)\n * - Support mouse wheel in Firefox\n * - Fix double click in IE\n * - Refactored some code and renamed some vars\n *\n * Modifications by Jeff Schiller, June 2009:\n * - provide callback function for when the value changes based on the following\n *   {@link https://www.mail-archive.com/jquery-en@googlegroups.com/msg36070.html}\n *\n * Modifications by Jeff Schiller, July 2009:\n * - improve styling for widget in Opera\n * - consistent key-repeat handling cross-browser\n *\n * Modifications by Alexis Deveria, October 2009:\n * - provide \"stepfunc\" callback option to allow custom function to run when changing a value\n * - Made adjustValue(0) only run on certain keyup events, not all.\n *\n * Tested in IE6, Opera9, Firefox 1.5\n *\n * | Version | Date | Author | Notes\n * |---------|------|--------|------|\n * | v1.0 | 11 Aug 2006 | George Adamson | First release\n * | v1.1 | Aug 2006 | George Adamson | Minor enhancements\n * | v1.2 | 27 Sep 2006 | Mark Gibson | Major enhancements\n * | v1.3a | 28 Sep 2006 | George Adamson | Minor enhancements\n * | v1.4 | 18 Jun 2009 | Jeff Schiller | Added callback function\n * | v1.5 | 06 Jul 2009 | Jeff Schiller | Fixes for Opera.\n * | v1.6 | 13 Oct 2009 | Alexis Deveria | Added stepfunc function\n * | v1.7 | 21 Oct 2009 | Alexis Deveria | Minor fixes.<br />Fast-repeat for keys and live updating as you type.\n * | v1.8 | 12 Jan 2010 | Benjamin Thomas | Fixes for mouseout behavior.<br />Added smallStep\n * | v1.9 | 20 May 2018 | Brett Zamir | Avoid SVGEdit dependency via `stateObj` config;<br />convert to ES6 module |\n * @module jQuerySpinButton\n * @example\n\n  // Create group of settings to initialise spinbutton(s). (Optional)\n  const myOptions = {\n    min: 0, // Set lower limit.\n    max: 100, // Set upper limit.\n    step: 1, // Set increment size.\n    smallStep: 0.5, // Set shift-click increment size.\n    stateObj: {tool_scale: 1}, // Object to allow passing in live-updating scale\n    spinClass: mySpinBtnClass, // CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n    upClass: mySpinUpClass, // CSS class for style when mouse over up button.\n    downClass: mySpinDnClass // CSS class for style when mouse over down button.\n  };\n\n  $(function () {\n    // Initialise INPUT element(s) as SpinButtons: (passing options if desired)\n    $(\"#myInputElement\").SpinButton(myOptions);\n  });\n */\n/**\n * @function module:jQuerySpinButton.jQuerySpinButton\n * @param {external:jQuery} $ The jQuery object to which to add the plug-in\n * @returns {external:jQuery}\n*/\nexport default function jQueryPluginSpinButton ($) {\n  if (!$.loadingStylesheets) {\n    $.loadingStylesheets = [];\n  }\n  const stylesheet = 'spinbtn/jQuery.SpinButton.css';\n  if (!$.loadingStylesheets.includes(stylesheet)) {\n    $.loadingStylesheets.push(stylesheet);\n  }\n  /**\n  * @callback module:jQuerySpinButton.StepCallback\n  * @param {external:jQuery} thisArg Value of `this`\n  * @param {Float} i Value to adjust\n  * @returns {Float}\n  */\n  /**\n  * @callback module:jQuerySpinButton.ValueCallback\n  * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.\n  * @returns {undefined}\n  */\n  /**\n   * @typedef {PlainObject} module:jQuerySpinButton.SpinButtonConfig\n   * @property {Float} min Set lower limit\n   * @property {Float} max Set upper limit.\n   * @property {Float} step Set increment size.\n   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.\n   * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)\n   * @property {Float} smallStep Set shift-click increment size.\n   * @property {PlainObject} stateObj Object to allow passing in live-updating scale\n   * @property {Float} stateObj.tool_scale\n   * @property {string} spinClass CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)\n   * @property {string} upClass CSS class for style when mouse over up button.\n   * @property {string} downClass CSS class for style when mouse over down button.\n   * @property {Float} page Value to be adjusted on page up/page down\n   * @property {Float} reset Reset value when invalid value entered\n   * @property {Float} delay Millisecond delay\n   * @property {Float} interval Millisecond interval\n  */\n  /**\n  * @function external:jQuery.fn.SpinButton\n  * @param {module:jQuerySpinButton.SpinButtonConfig} cfg\n  * @returns {external:jQuery}\n  */\n  $.fn.SpinButton = function (cfg) {\n    cfg = cfg || {};\n\n    /**\n     *\n     * @param {Element} el\n     * @param {\"offsetLeft\"|\"offsetTop\"} prop\n     * @returns {Integer}\n     */\n    function coord (el, prop) {\n      const b = document.body;\n\n      let c = el[prop];\n      while ((el = el.offsetParent) && (el !== b)) {\n        if (!$.browser.msie || (el.currentStyle.position !== 'relative')) {\n          c += el[prop];\n        }\n      }\n\n      return c;\n    }\n\n    return this.each(function () {\n      this.repeating = false;\n\n      // Apply specified options or defaults:\n      // (Ought to refactor this some day to use $.extend() instead)\n      this.spinCfg = {\n        // min: cfg.min ? Number(cfg.min) : null,\n        // max: cfg.max ? Number(cfg.max) : null,\n        min: !isNaN(parseFloat(cfg.min)) ? Number(cfg.min) : null, // Fixes bug with min:0\n        max: !isNaN(parseFloat(cfg.max)) ? Number(cfg.max) : null,\n        step: cfg.step ? Number(cfg.step) : 1,\n        stepfunc: cfg.stepfunc || false,\n        page: cfg.page ? Number(cfg.page) : 10,\n        upClass: cfg.upClass || 'up',\n        downClass: cfg.downClass || 'down',\n        reset: cfg.reset || this.value,\n        delay: cfg.delay ? Number(cfg.delay) : 500,\n        interval: cfg.interval ? Number(cfg.interval) : 100,\n        _btn_width: 20,\n        _direction: null,\n        _delay: null,\n        _repeat: null,\n        callback: cfg.callback || null\n      };\n\n      // if a smallStep isn't supplied, use half the regular step\n      this.spinCfg.smallStep = cfg.smallStep || this.spinCfg.step / 2;\n\n      this.adjustValue = function (i) {\n        let v;\n        if (isNaN(this.value)) {\n          v = this.spinCfg.reset;\n        } else if (typeof this.spinCfg.stepfunc === 'function') {\n          v = this.spinCfg.stepfunc(this, i);\n        } else {\n          // weirdest JavaScript bug ever: 5.1 + 0.1 = 5.199999999\n          v = Number((Number(this.value) + Number(i)).toFixed(5));\n        }\n        if (this.spinCfg.min !== null) { v = Math.max(v, this.spinCfg.min); }\n        if (this.spinCfg.max !== null) { v = Math.min(v, this.spinCfg.max); }\n        this.value = v;\n        if (typeof this.spinCfg.callback === 'function') {\n          this.spinCfg.callback(this);\n        }\n      };\n\n      $(this)\n        .addClass(cfg.spinClass || 'spin-button')\n\n        .mousemove(function (e) {\n          // Determine which button mouse is over, or not (spin direction):\n          const x = e.pageX || e.x;\n          const y = e.pageY || e.y;\n          const el = e.target;\n          const scale = cfg.stateObj.tool_scale || 1;\n          const height = $(el).height() / 2;\n\n          const direction =\n            (x > coord(el, 'offsetLeft') +\n              el.offsetWidth * scale - this.spinCfg._btn_width)\n              ? ((y < coord(el, 'offsetTop') + height * scale) ? 1 : -1)\n              : 0;\n\n          if (direction !== this.spinCfg._direction) {\n            // Style up/down buttons:\n            switch (direction) {\n            case 1: // Up arrow:\n              $(this).removeClass(this.spinCfg.downClass).addClass(this.spinCfg.upClass);\n              break;\n            case -1: // Down arrow:\n              $(this).removeClass(this.spinCfg.upClass).addClass(this.spinCfg.downClass);\n              break;\n            default: // Mouse is elsewhere in the textbox\n              $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n            }\n\n            // Set spin direction:\n            this.spinCfg._direction = direction;\n          }\n        })\n\n        .mouseout(function () {\n          // Reset up/down buttons to their normal appearance when mouse moves away:\n          $(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);\n          this.spinCfg._direction = null;\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .mousedown(function (e) {\n          if (e.button === 0 && this.spinCfg._direction !== 0) {\n            // Respond to click on one of the buttons:\n            const stepSize = e.shiftKey ? this.spinCfg.smallStep : this.spinCfg.step;\n\n            const adjust = () => {\n              this.adjustValue(this.spinCfg._direction * stepSize);\n            };\n\n            adjust();\n\n            // Initial delay before repeating adjustment\n            this.spinCfg._delay = window.setTimeout(() => {\n              adjust();\n              // Repeat adjust at regular intervals\n              this.spinCfg._repeat = window.setInterval(adjust, this.spinCfg.interval);\n            }, this.spinCfg.delay);\n          }\n        })\n\n        .mouseup(function (e) {\n          // Cancel repeating adjustment\n          window.clearInterval(this.spinCfg._repeat);\n          window.clearTimeout(this.spinCfg._delay);\n        })\n\n        .dblclick(function (e) {\n          if ($.browser.msie) {\n            this.adjustValue(this.spinCfg._direction * this.spinCfg.step);\n          }\n        })\n\n        .keydown(function (e) {\n          // Respond to up/down arrow keys.\n          switch (e.keyCode) {\n          case 38: this.adjustValue(this.spinCfg.step); break; // Up\n          case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n          case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n          case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n          }\n        })\n\n        /*\n        http://unixpapa.com/js/key.html describes the current state-of-affairs for\n        key repeat events:\n        - Safari 3.1 changed their model so that keydown is reliably repeated going forward\n        - Firefox and Opera still only repeat the keypress event, not the keydown\n        */\n        .keypress(function (e) {\n          if (this.repeating) {\n            // Respond to up/down arrow keys.\n            switch (e.keyCode) {\n            case 38: this.adjustValue(this.spinCfg.step); break; // Up\n            case 40: this.adjustValue(-this.spinCfg.step); break; // Down\n            case 33: this.adjustValue(this.spinCfg.page); break; // PageUp\n            case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown\n            }\n          // we always ignore the first keypress event (use the keydown instead)\n          } else {\n            this.repeating = true;\n          }\n        })\n\n        // clear the 'repeating' flag\n        .keyup(function (e) {\n          this.repeating = false;\n          switch (e.keyCode) {\n          case 38: // Up\n          case 40: // Down\n          case 33: // PageUp\n          case 34: // PageDown\n          case 13: this.adjustValue(0); break; // Enter/Return\n          }\n        })\n\n        .bind('mousewheel', function (e) {\n          // Respond to mouse wheel in IE. (It returns up/dn motion in multiples of 120)\n          if (e.wheelDelta >= 120) {\n            this.adjustValue(this.spinCfg.step);\n          } else if (e.wheelDelta <= -120) {\n            this.adjustValue(-this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        })\n\n        .change(function (e) {\n          this.adjustValue(0);\n        });\n\n      if (this.addEventListener) {\n        // Respond to mouse wheel in Firefox\n        this.addEventListener('DOMMouseScroll', function (e) {\n          if (e.detail > 0) {\n            this.adjustValue(-this.spinCfg.step);\n          } else if (e.detail < 0) {\n            this.adjustValue(this.spinCfg.step);\n          }\n\n          e.preventDefault();\n        });\n      }\n    });\n  };\n  return $;\n}\n","/**\n * jQuery Context Menu Plugin\n * Cory S.N. LaViska\n * A Beautiful Site ({@link https://abeautifulsite.net/})\n * Modified by Alexis Deveria\n *\n * More info: {@link https://abeautifulsite.net/2008/09/jquery-context-menu-plugin/}\n *\n * @module jQueryContextMenu\n * @todo Update to latest version and adapt (and needs jQuery update as well): {@link https://github.com/swisnl/jQuery-contextMenu}\n * @version 1.01\n *\n * @license\n * Terms of Use\n *\n * This plugin is dual-licensed under the GNU General Public License\n *   and the MIT License and is copyright A Beautiful Site, LLC.\n *\n*/\nimport {isMac} from '../browser.js';\n\n/**\n* @callback module:jQueryContextMenu.jQueryContextMenuListener\n* @param {string} href The `href` value after the first character (for bypassing an initial `#`)\n* @param {external:jQuery} srcElement The wrapped jQuery srcElement\n* @param {{x: Float, y: Float, docX: Float, docY: Float}} coords\n*/\n\n/**\n* @typedef {PlainObject} module:jQueryContextMenu.jQueryContextMenuConfig\n* @property {string} menu\n* @property {Float} inSpeed\n* @property {Float} outSpeed\n* @property {boolean} allowLeft\n*/\n\n/**\n* Adds {@link external:jQuery.fn.contextMenu},\n* {@link external:jQuery.fn.disableContextMenuItems},\n* {@link external:jQuery.fn.enableContextMenuItems},\n* {@link external:jQuery.fn.disableContextMenu},\n* {@link external:jQuery.fn.enableContextMenu},\n* {@link external:jQuery.fn.destroyContextMenu}.\n* @function module:jQueryContextMenu.jQueryContextMenu\n* @param {external:jQuery} $ The jQuery object to wrap (with `contextMenu`, `disableContextMenuItems`, `enableContextMenuItems`, `disableContextMenu`, `enableContextMenu`, `destroyContextMenu`)\n* @returns {external:jQuery}\n*/\nfunction jQueryContextMenu ($) {\n  const win = $(window);\n  const doc = $(document);\n\n  $.extend($.fn, {\n    /**\n    * @memberof external:jQuery.fn\n    * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o\n    * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener\n    * @returns {external:jQuery}\n    */\n    contextMenu (o, listener) {\n      // Defaults\n      if (o.menu === undefined) return false;\n      if (o.inSpeed === undefined) o.inSpeed = 150;\n      if (o.outSpeed === undefined) o.outSpeed = 75;\n      // 0 needs to be -1 for expected results (no fade)\n      if (o.inSpeed === 0) o.inSpeed = -1;\n      if (o.outSpeed === 0) o.outSpeed = -1;\n      // Loop each context menu\n      $(this).each(function () {\n        const el = $(this);\n        const offset = $(el).offset();\n\n        const menu = $('#' + o.menu);\n\n        // Add contextMenu class\n        menu.addClass('contextMenu');\n        // Simulate a true right click\n        $(this).bind('mousedown', function (evt) {\n          $(this).mouseup(function (e) {\n            const srcElement = $(this);\n            srcElement.unbind('mouseup');\n\n            if (!(evt.button === 2 || o.allowLeft ||\n              (evt.ctrlKey && isMac()))) {\n              return undefined;\n            }\n            e.stopPropagation();\n            // Hide context menus that may be showing\n            $('.contextMenu').hide();\n            // Get this context menu\n\n            if (el.hasClass('disabled')) return false;\n\n            // Detect mouse position\n            let x = e.pageX, y = e.pageY;\n\n            const xOff = win.width() - menu.width(),\n              yOff = win.height() - menu.height();\n\n            if (x > xOff - 15) x = xOff - 15;\n            if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF\n\n            // Show the menu\n            doc.unbind('click');\n            menu.css({top: y, left: x}).fadeIn(o.inSpeed);\n            // Hover events\n            menu.find('A').mouseover(function () {\n              menu.find('LI.hover').removeClass('hover');\n              $(this).parent().addClass('hover');\n            }).mouseout(function () {\n              menu.find('LI.hover').removeClass('hover');\n            });\n\n            // Keyboard\n            doc.keypress(function (ev) {\n              switch (ev.keyCode) {\n              case 38: // up\n                if (!menu.find('LI.hover').length) {\n                  menu.find('LI:last').addClass('hover');\n                } else {\n                  menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');\n                  if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');\n                }\n                break;\n              case 40: // down\n                if (!menu.find('LI.hover').length) {\n                  menu.find('LI:first').addClass('hover');\n                } else {\n                  menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');\n                  if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');\n                }\n                break;\n              case 13: // enter\n                menu.find('LI.hover A').trigger('click');\n                break;\n              case 27: // esc\n                doc.trigger('click');\n                break;\n              }\n            });\n\n            // When items are selected\n            menu.find('A').unbind('mouseup');\n            menu.find('LI:not(.disabled) A').mouseup(function () {\n              doc.unbind('click').unbind('keypress');\n              $('.contextMenu').hide();\n              if (listener) {\n                listener($(this).attr('href').substr(1), $(srcElement), {\n                  x: x - offset.left, y: y - offset.top, docX: x, docY: y\n                });\n              }\n              return false;\n            });\n\n            // Hide bindings\n            setTimeout(function () { // Delay for Mozilla\n              doc.click(function () {\n                doc.unbind('click').unbind('keypress');\n                menu.fadeOut(o.outSpeed);\n                return false;\n              });\n            }, 0);\n            return undefined;\n          });\n        });\n\n        // Disable text selection\n        if ($.browser.mozilla) {\n          $('#' + o.menu).each(function () { $(this).css({MozUserSelect: 'none'}); });\n        } else if ($.browser.msie) {\n          $('#' + o.menu).each(function () { $(this).bind('selectstart.disableTextSelect', function () { return false; }); });\n        } else {\n          $('#' + o.menu).each(function () { $(this).bind('mousedown.disableTextSelect', function () { return false; }); });\n        }\n        // Disable browser context menu (requires both selectors to work in IE/Safari + FF/Chrome)\n        $(el).add($('UL.contextMenu')).bind('contextmenu', function () { return false; });\n      });\n      return $(this);\n    },\n\n    /**\n    * Disable context menu items on the fly.\n    * @memberof external:jQuery.fn\n    * @param {undefined|string} o Comma-separated\n    * @returns {external:jQuery}\n    */\n    disableContextMenuItems (o) {\n      if (o === undefined) {\n        // Disable all\n        $(this).find('LI').addClass('disabled');\n        return $(this);\n      }\n      $(this).each(function () {\n        if (o !== undefined) {\n          const d = o.split(',');\n          for (let i = 0; i < d.length; i++) {\n            $(this).find('A[href=\"' + d[i] + '\"]').parent().addClass('disabled');\n          }\n        }\n      });\n      return $(this);\n    },\n\n    /**\n    * Enable context menu items on the fly.\n    * @memberof external:jQuery.fn\n    * @param {undefined|string} o Comma-separated\n    * @returns {external:jQuery}\n    */\n    enableContextMenuItems (o) {\n      if (o === undefined) {\n        // Enable all\n        $(this).find('LI.disabled').removeClass('disabled');\n        return $(this);\n      }\n      $(this).each(function () {\n        if (o !== undefined) {\n          const d = o.split(',');\n          for (let i = 0; i < d.length; i++) {\n            $(this).find('A[href=\"' + d[i] + '\"]').parent().removeClass('disabled');\n          }\n        }\n      });\n      return $(this);\n    },\n\n    /**\n    * Disable context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    disableContextMenu () {\n      $(this).each(function () {\n        $(this).addClass('disabled');\n      });\n      return $(this);\n    },\n\n    /**\n    * Enable context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    enableContextMenu () {\n      $(this).each(function () {\n        $(this).removeClass('disabled');\n      });\n      return $(this);\n    },\n\n    /**\n    * Destroy context menu(s).\n    * @memberof external:jQuery.fn\n    * @returns {external:jQuery}\n    */\n    destroyContextMenu () {\n      // Destroy specified context menus\n      $(this).each(function () {\n        // Disable action\n        $(this).unbind('mousedown').unbind('mouseup');\n      });\n      return $(this);\n    }\n  });\n  return $;\n}\n\nexport default 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\ No newline at end of file
diff --git a/dist/jspdf.plugin.svgToPdf.js b/dist/jspdf.plugin.svgToPdf.js
index f5f81d61..8de202c4 100644
--- a/dist/jspdf.plugin.svgToPdf.js
+++ b/dist/jspdf.plugin.svgToPdf.js
@@ -237,20 +237,38 @@
   var colorDefs = [{
     re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
     example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 10), parseInt(bits[2], 10), parseInt(bits[3], 10)];
+    process: function process(_) {
+      for (var _len = arguments.length, bits = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        bits[_key - 1] = arguments[_key];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b);
+      });
     }
   }, {
     re: /^(\w{2})(\w{2})(\w{2})$/,
     example: ['#00ff00', '336699'],
-    process: function process(bits) {
-      return [parseInt(bits[1], 16), parseInt(bits[2], 16), parseInt(bits[3], 16)];
+    process: function process(_) {
+      for (var _len2 = arguments.length, bits = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        bits[_key2 - 1] = arguments[_key2];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b, 16);
+      });
     }
   }, {
     re: /^(\w{1})(\w{1})(\w{1})$/,
     example: ['#fb0', 'f0f'],
-    process: function process(bits) {
-      return [parseInt(bits[1] + bits[1], 16), parseInt(bits[2] + bits[2], 16), parseInt(bits[3] + bits[3], 16)];
+    process: function process(_) {
+      for (var _len3 = arguments.length, bits = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
+        bits[_key3 - 1] = arguments[_key3];
+      }
+
+      return bits.map(function (b) {
+        return parseInt(b + b, 16);
+      });
     }
   }];
   /**
@@ -264,6 +282,8 @@
     * @param {string} colorString
     */
     function RGBColor(colorString) {
+      var _this = this;
+
       _classCallCheck(this, RGBColor);
 
       this.ok = false; // strip any leading #
@@ -283,9 +303,9 @@
       // search through the definitions to find a match
 
 
-      for (var i = 0; i < colorDefs.length; i++) {
-        var re = colorDefs[i].re;
-        var processor = colorDefs[i].process;
+      colorDefs.forEach(function (_ref) {
+        var re = _ref.re,
+            processor = _ref.process;
         var bits = re.exec(colorString);
 
         if (bits) {
@@ -295,15 +315,14 @@
               g = _processor2[1],
               b = _processor2[2];
 
-          Object.assign(this, {
+          Object.assign(_this, {
             r: r,
             g: g,
             b: b
           });
-          this.ok = true;
+          _this.ok = true;
         }
-      } // validate/cleanup values
-
+      }, this); // validate/cleanup values
 
       this.r = this.r < 0 || isNaN(this.r) ? 0 : this.r > 255 ? 255 : this.r;
       this.g = this.g < 0 || isNaN(this.g) ? 0 : this.g > 255 ? 255 : this.g;
@@ -345,49 +364,36 @@
 
         return '#' + r + g + b;
       }
-      /**
-      * Offers a bulleted list of help.
-      * @returns {HTMLUListElement}
-      */
-
-    }, {
-      key: "getHelpXML",
-      value: function getHelpXML() {
-        var examples = []; // add regexps
-
-        for (var i = 0; i < colorDefs.length; i++) {
-          var example = colorDefs[i].example;
-
-          for (var j = 0; j < example.length; j++) {
-            examples[examples.length] = example[j];
-          }
-        } // add type-in colors
-
-
-        examples.push.apply(examples, _toConsumableArray(Object.keys(simpleColors)));
-        var xml = document.createElement('ul');
-        xml.setAttribute('id', 'rgbcolor-examples');
-
-        for (var _i = 0; _i < examples.length; _i++) {
-          try {
-            var listItem = document.createElement('li');
-            var listColor = new RGBColor(examples[_i]);
-            var exampleDiv = document.createElement('div');
-            exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
-            exampleDiv.append('test');
-            var listItemValue = " ".concat(examples[_i], " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
-            listItem.append(exampleDiv, listItemValue);
-            xml.append(listItem);
-          } catch (e) {}
-        }
-
-        return xml;
-      }
     }]);
 
     return RGBColor;
   }();
 
+  RGBColor.getHelpXML = function () {
+    var examples = _toConsumableArray(colorDefs.flatMap(function (_ref2) {
+      var example = _ref2.example;
+      return example;
+    })).concat(_toConsumableArray(Object.keys(simpleColors)));
+
+    var xml = document.createElement('ul');
+    xml.setAttribute('id', 'rgbcolor-examples');
+    xml.append.apply(xml, _toConsumableArray(examples.map(function (example) {
+      try {
+        var listItem = document.createElement('li');
+        var listColor = new RGBColor(example);
+        var exampleDiv = document.createElement('div');
+        exampleDiv.style.cssText = "\nmargin: 3px;\nborder: 1px solid black;\nbackground: ".concat(listColor.toHex(), ";\ncolor: ").concat(listColor.toHex(), ";");
+        exampleDiv.append('test');
+        var listItemValue = " ".concat(example, " -> ").concat(listColor.toRGB(), " -> ").concat(listColor.toHex());
+        listItem.append(exampleDiv, listItemValue);
+        return listItem;
+      } catch (e) {
+        return '';
+      }
+    })));
+    return xml;
+  };
+
   var jsPDFAPI = jsPDF.API;
   var pdfSvgAttr = {
     // allowed attributes. all others are removed from the preview.
@@ -437,8 +443,9 @@
     }
 
     if (nums.length < 4) {
-      console.log('invalid points attribute:', node);
-      return;
+      console.log('invalid points attribute:', node); // eslint-disable-line no-console
+
+      return undefined;
     }
 
     var _nums = nums,
@@ -491,7 +498,7 @@
         }
 
         if (attributeIsNotEmpty(node, 'stroke-width')) {
-          pdf.setLineWidth(k * parseInt(node.getAttribute('stroke-width'), 10));
+          pdf.setLineWidth(k * parseInt(node.getAttribute('stroke-width')));
         }
 
         var strokeColor = node.getAttribute('stroke');
@@ -525,142 +532,150 @@
           break;
 
         case 'line':
-          pdf.line(k * parseInt(node.getAttribute('x1'), 10), k * parseInt(node.getAttribute('y1'), 10), k * parseInt(node.getAttribute('x2'), 10), k * parseInt(node.getAttribute('y2'), 10));
+          pdf.line(k * parseInt(node.getAttribute('x1')), k * parseInt(node.getAttribute('y1')), k * parseInt(node.getAttribute('x2')), k * parseInt(node.getAttribute('y2')));
           removeAttributes(node, pdfSvgAttr.line);
           break;
 
         case 'rect':
-          pdf.rect(k * parseInt(node.getAttribute('x'), 10), k * parseInt(node.getAttribute('y'), 10), k * parseInt(node.getAttribute('width'), 10), k * parseInt(node.getAttribute('height'), 10), colorMode);
+          pdf.rect(k * parseInt(node.getAttribute('x')), k * parseInt(node.getAttribute('y')), k * parseInt(node.getAttribute('width')), k * parseInt(node.getAttribute('height')), colorMode);
           removeAttributes(node, pdfSvgAttr.rect);
           break;
 
         case 'ellipse':
-          pdf.ellipse(k * parseInt(node.getAttribute('cx'), 10), k * parseInt(node.getAttribute('cy'), 10), k * parseInt(node.getAttribute('rx'), 10), k * parseInt(node.getAttribute('ry'), 10), colorMode);
+          pdf.ellipse(k * parseInt(node.getAttribute('cx')), k * parseInt(node.getAttribute('cy')), k * parseInt(node.getAttribute('rx')), k * parseInt(node.getAttribute('ry')), colorMode);
           removeAttributes(node, pdfSvgAttr.ellipse);
           break;
 
         case 'circle':
-          pdf.circle(k * parseInt(node.getAttribute('cx'), 10), k * parseInt(node.getAttribute('cy'), 10), k * parseInt(node.getAttribute('r'), 10), colorMode);
+          pdf.circle(k * parseInt(node.getAttribute('cx')), k * parseInt(node.getAttribute('cy')), k * parseInt(node.getAttribute('r')), colorMode);
           removeAttributes(node, pdfSvgAttr.circle);
           break;
 
         case 'polygon':
         case 'polyline':
-          var linesOptions = getLinesOptionsOfPoly(node);
+          {
+            var linesOptions = getLinesOptionsOfPoly(node);
 
-          if (linesOptions) {
-            pdf.lines(linesOptions.lines, k * linesOptions.x, k * linesOptions.y, [k, k], colorMode, tag === 'polygon' // polygon is closed, polyline is not closed
-            );
+            if (linesOptions) {
+              pdf.lines(linesOptions.lines, k * linesOptions.x, k * linesOptions.y, [k, k], colorMode, tag === 'polygon' // polygon is closed, polyline is not closed
+              );
+            }
+
+            removeAttributes(node, pdfSvgAttr.polygon);
+            break; // TODO: path
           }
 
-          removeAttributes(node, pdfSvgAttr.polygon);
-          break;
-        // TODO: path
-
         case 'text':
-          if (node.hasAttribute('font-family')) {
-            switch ((node.getAttribute('font-family') || '').toLowerCase()) {
-              case 'serif':
-                pdf.setFont('times');
-                break;
+          {
+            if (node.hasAttribute('font-family')) {
+              switch ((node.getAttribute('font-family') || '').toLowerCase()) {
+                case 'serif':
+                  pdf.setFont('times');
+                  break;
 
-              case 'monospace':
-                pdf.setFont('courier');
-                break;
+                case 'monospace':
+                  pdf.setFont('courier');
+                  break;
 
-              default:
-                node.setAttribute('font-family', 'sans-serif');
-                pdf.setFont('helvetica');
+                default:
+                  node.setAttribute('font-family', 'sans-serif');
+                  pdf.setFont('helvetica');
+              }
             }
-          }
 
-          if (hasFillColor) {
-            pdf.setTextColor(fillRGB.r, fillRGB.g, fillRGB.b);
-          }
-
-          var fontType = '';
-
-          if (node.hasAttribute('font-weight')) {
-            if (node.getAttribute('font-weight') === 'bold') {
-              fontType = 'bold';
-            } else {
-              node.removeAttribute('font-weight');
+            if (hasFillColor) {
+              pdf.setTextColor(fillRGB.r, fillRGB.g, fillRGB.b);
             }
-          }
 
-          if (node.hasAttribute('font-style')) {
-            if (node.getAttribute('font-style') === 'italic') {
-              fontType += 'italic';
-            } else {
-              node.removeAttribute('font-style');
+            var fontType = '';
+
+            if (node.hasAttribute('font-weight')) {
+              if (node.getAttribute('font-weight') === 'bold') {
+                fontType = 'bold';
+              } else {
+                node.removeAttribute('font-weight');
+              }
             }
-          }
 
-          pdf.setFontType(fontType);
-          var pdfFontSize = node.hasAttribute('font-size') ? parseInt(node.getAttribute('font-size'), 10) : 16;
+            if (node.hasAttribute('font-style')) {
+              if (node.getAttribute('font-style') === 'italic') {
+                fontType += 'italic';
+              } else {
+                node.removeAttribute('font-style');
+              }
+            }
 
-          var getWidth = function getWidth(node) {
-            var box;
+            pdf.setFontType(fontType);
+            var pdfFontSize = node.hasAttribute('font-size') ? parseInt(node.getAttribute('font-size')) : 16;
+            /**
+             *
+             * @param {Element} elem
+             * @returns {Float}
+             */
 
-            try {
-              box = node.getBBox(); // Firefox on MacOS will raise error here
-            } catch (err) {
-              // copy and append to body so that getBBox is available
-              var nodeCopy = node.cloneNode(true);
-              var svg = node.ownerSVGElement.cloneNode(false);
-              svg.appendChild(nodeCopy);
-              document.body.appendChild(svg);
+            var getWidth = function getWidth(elem) {
+              var box;
 
               try {
-                box = nodeCopy.getBBox();
+                box = elem.getBBox(); // Firefox on MacOS will raise error here
               } catch (err) {
-                box = {
-                  width: 0
-                };
+                // copy and append to body so that getBBox is available
+                var nodeCopy = elem.cloneNode(true);
+                var svg = elem.ownerSVGElement.cloneNode(false);
+                svg.appendChild(nodeCopy);
+                document.body.appendChild(svg);
+
+                try {
+                  box = nodeCopy.getBBox();
+                } catch (error) {
+                  box = {
+                    width: 0
+                  };
+                }
+
+                document.body.removeChild(svg);
               }
 
-              document.body.removeChild(svg);
-            }
-
-            return box.width;
-          }; // FIXME: use more accurate positioning!!
+              return box.width;
+            }; // FIXME: use more accurate positioning!!
 
 
-          var x,
-              y,
-              xOffset = 0;
+            var x,
+                y,
+                xOffset = 0;
 
-          if (node.hasAttribute('text-anchor')) {
-            switch (node.getAttribute('text-anchor')) {
-              case 'end':
-                xOffset = getWidth(node);
-                break;
+            if (node.hasAttribute('text-anchor')) {
+              switch (node.getAttribute('text-anchor')) {
+                case 'end':
+                  xOffset = getWidth(node);
+                  break;
 
-              case 'middle':
-                xOffset = getWidth(node) / 2;
-                break;
+                case 'middle':
+                  xOffset = getWidth(node) / 2;
+                  break;
 
-              case 'start':
-                break;
+                case 'start':
+                  break;
 
-              case 'default':
-                node.setAttribute('text-anchor', 'start');
-                break;
-            }
+                case 'default':
+                  node.setAttribute('text-anchor', 'start');
+                  break;
+              }
 
-            x = parseInt(node.getAttribute('x'), 10) - xOffset;
-            y = parseInt(node.getAttribute('y'), 10);
-          } // console.log('fontSize:', pdfFontSize, 'text:', node.textContent);
+              x = parseInt(node.getAttribute('x')) - xOffset;
+              y = parseInt(node.getAttribute('y'));
+            } // console.log('fontSize:', pdfFontSize, 'text:', node.textContent);
 
 
-          pdf.setFontSize(pdfFontSize).text(k * x, k * y, node.textContent);
-          removeAttributes(node, pdfSvgAttr.text);
-          break;
-        // TODO: image
+            pdf.setFontSize(pdfFontSize).text(k * x, k * y, node.textContent);
+            removeAttributes(node, pdfSvgAttr.text);
+            break; // TODO: image
+          }
 
         default:
           if (remove) {
-            console.log("can't translate to pdf:", node);
+            console.log("can't translate to pdf:", node); // eslint-disable-line no-console
+
             node.remove();
           }
 
diff --git a/dist/locale/lang.af.js b/dist/locale/lang.af.js
index ea7ceec9..8ab6a712 100644
--- a/dist/locale/lang.af.js
+++ b/dist/locale/lang.af.js
@@ -209,7 +209,7 @@ var svgEditorLang_af = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ar.js b/dist/locale/lang.ar.js
index f699f836..81dc377e 100644
--- a/dist/locale/lang.ar.js
+++ b/dist/locale/lang.ar.js
@@ -209,7 +209,7 @@ var svgEditorLang_ar = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.az.js b/dist/locale/lang.az.js
index 04c5e4df..9f7e1fd9 100644
--- a/dist/locale/lang.az.js
+++ b/dist/locale/lang.az.js
@@ -209,7 +209,7 @@ var svgEditorLang_az = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.be.js b/dist/locale/lang.be.js
index bc0512e2..eb6c4179 100644
--- a/dist/locale/lang.be.js
+++ b/dist/locale/lang.be.js
@@ -209,7 +209,7 @@ var svgEditorLang_be = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.bg.js b/dist/locale/lang.bg.js
index ece1e9d1..86be7ceb 100644
--- a/dist/locale/lang.bg.js
+++ b/dist/locale/lang.bg.js
@@ -209,7 +209,7 @@ var svgEditorLang_bg = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ca.js b/dist/locale/lang.ca.js
index c4147f90..4be1f14c 100644
--- a/dist/locale/lang.ca.js
+++ b/dist/locale/lang.ca.js
@@ -209,7 +209,7 @@ var svgEditorLang_ca = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.cs.js b/dist/locale/lang.cs.js
index add8a0ab..771a4826 100644
--- a/dist/locale/lang.cs.js
+++ b/dist/locale/lang.cs.js
@@ -209,7 +209,7 @@ var svgEditorLang_cs = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.cy.js b/dist/locale/lang.cy.js
index 34bf0568..510f81f0 100644
--- a/dist/locale/lang.cy.js
+++ b/dist/locale/lang.cy.js
@@ -209,7 +209,7 @@ var svgEditorLang_cy = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.da.js b/dist/locale/lang.da.js
index 9d90504c..15204e3a 100644
--- a/dist/locale/lang.da.js
+++ b/dist/locale/lang.da.js
@@ -209,7 +209,7 @@ var svgEditorLang_da = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.de.js b/dist/locale/lang.de.js
index 1a967a6b..d56f7f6a 100644
--- a/dist/locale/lang.de.js
+++ b/dist/locale/lang.de.js
@@ -209,7 +209,7 @@ var svgEditorLang_de = (function () {
       unsavedChanges: 'Es sind nicht-gespeicherte Änderungen vorhanden.',
       enterNewLinkURL: 'Geben Sie die neue URL ein',
       errorLoadingSVG: 'Fehler: Kann SVG-Daten nicht laden',
-      URLloadFail: 'Kann von dieser URL nicht laden',
+      URLLoadFail: 'Kann von dieser URL nicht laden',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.el.js b/dist/locale/lang.el.js
index 9c567263..0f5cdc59 100644
--- a/dist/locale/lang.el.js
+++ b/dist/locale/lang.el.js
@@ -209,7 +209,7 @@ var svgEditorLang_el = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.en.js b/dist/locale/lang.en.js
index 5b35b7f2..755fc0f7 100644
--- a/dist/locale/lang.en.js
+++ b/dist/locale/lang.en.js
@@ -209,7 +209,7 @@ var svgEditorLang_en = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.es.js b/dist/locale/lang.es.js
index d944fbc7..78f387fb 100644
--- a/dist/locale/lang.es.js
+++ b/dist/locale/lang.es.js
@@ -209,7 +209,7 @@ var svgEditorLang_es = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.et.js b/dist/locale/lang.et.js
index 4752d0ef..3fbd6891 100644
--- a/dist/locale/lang.et.js
+++ b/dist/locale/lang.et.js
@@ -209,7 +209,7 @@ var svgEditorLang_et = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.fa.js b/dist/locale/lang.fa.js
index 357c1e43..b9266cfe 100644
--- a/dist/locale/lang.fa.js
+++ b/dist/locale/lang.fa.js
@@ -209,7 +209,7 @@ var svgEditorLang_fa = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.fi.js b/dist/locale/lang.fi.js
index 1b8a189f..801131f8 100644
--- a/dist/locale/lang.fi.js
+++ b/dist/locale/lang.fi.js
@@ -209,7 +209,7 @@ var svgEditorLang_fi = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: "Retrieving '%s' ...",
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.fr.js b/dist/locale/lang.fr.js
index 792a3b4b..d373d3ec 100644
--- a/dist/locale/lang.fr.js
+++ b/dist/locale/lang.fr.js
@@ -209,7 +209,7 @@ var svgEditorLang_fr = (function () {
       unsavedChanges: 'Il y a des changements non sauvegardés.',
       enterNewLinkURL: "Entrez la nouvelle URL de l'hyperlien",
       errorLoadingSVG: 'Erreur : Impossible de charger les données SVG',
-      URLloadFail: "Impossible de charger l'URL",
+      URLLoadFail: "Impossible de charger l'URL",
       retrieving: 'Récupération de « %s »…',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.fy.js b/dist/locale/lang.fy.js
index d4ee87a1..0a18cdbd 100644
--- a/dist/locale/lang.fy.js
+++ b/dist/locale/lang.fy.js
@@ -209,7 +209,7 @@ var svgEditorLang_fy = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\'...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ga.js b/dist/locale/lang.ga.js
index ca420037..cd4b44c6 100644
--- a/dist/locale/lang.ga.js
+++ b/dist/locale/lang.ga.js
@@ -209,7 +209,7 @@ var svgEditorLang_ga = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.gl.js b/dist/locale/lang.gl.js
index 3aa5483e..b197a559 100644
--- a/dist/locale/lang.gl.js
+++ b/dist/locale/lang.gl.js
@@ -209,7 +209,7 @@ var svgEditorLang_gl = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.he.js b/dist/locale/lang.he.js
index 349cf94c..cac808df 100644
--- a/dist/locale/lang.he.js
+++ b/dist/locale/lang.he.js
@@ -209,7 +209,7 @@ var svgEditorLang_he = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.hi.js b/dist/locale/lang.hi.js
index b50302dd..80e555f4 100644
--- a/dist/locale/lang.hi.js
+++ b/dist/locale/lang.hi.js
@@ -209,7 +209,7 @@ var svgEditorLang_hi = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.hr.js b/dist/locale/lang.hr.js
index 08634120..c0556c5e 100644
--- a/dist/locale/lang.hr.js
+++ b/dist/locale/lang.hr.js
@@ -209,7 +209,7 @@ var svgEditorLang_hr = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.hu.js b/dist/locale/lang.hu.js
index 8f55cb0b..29b60e5c 100644
--- a/dist/locale/lang.hu.js
+++ b/dist/locale/lang.hu.js
@@ -209,7 +209,7 @@ var svgEditorLang_hu = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.hy.js b/dist/locale/lang.hy.js
index d3a6264a..5dc05d14 100644
--- a/dist/locale/lang.hy.js
+++ b/dist/locale/lang.hy.js
@@ -209,7 +209,7 @@ var svgEditorLang_hy = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.id.js b/dist/locale/lang.id.js
index 5abeae5c..dbeca5a5 100644
--- a/dist/locale/lang.id.js
+++ b/dist/locale/lang.id.js
@@ -209,7 +209,7 @@ var svgEditorLang_id = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.is.js b/dist/locale/lang.is.js
index 058a665a..f436cd80 100644
--- a/dist/locale/lang.is.js
+++ b/dist/locale/lang.is.js
@@ -209,7 +209,7 @@ var svgEditorLang_is = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.it.js b/dist/locale/lang.it.js
index 733f4f74..1d01728c 100644
--- a/dist/locale/lang.it.js
+++ b/dist/locale/lang.it.js
@@ -209,7 +209,7 @@ var svgEditorLang_it = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ja.js b/dist/locale/lang.ja.js
index 9b66d080..b9f4bd07 100644
--- a/dist/locale/lang.ja.js
+++ b/dist/locale/lang.ja.js
@@ -209,7 +209,7 @@ var svgEditorLang_ja = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ko.js b/dist/locale/lang.ko.js
index 138dc239..a6864ba4 100644
--- a/dist/locale/lang.ko.js
+++ b/dist/locale/lang.ko.js
@@ -209,7 +209,7 @@ var svgEditorLang_ko = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.lt.js b/dist/locale/lang.lt.js
index 5deca361..30c1a6f9 100644
--- a/dist/locale/lang.lt.js
+++ b/dist/locale/lang.lt.js
@@ -209,7 +209,7 @@ var svgEditorLang_lt = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.lv.js b/dist/locale/lang.lv.js
index fa4db206..174fc261 100644
--- a/dist/locale/lang.lv.js
+++ b/dist/locale/lang.lv.js
@@ -209,7 +209,7 @@ var svgEditorLang_lv = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.mk.js b/dist/locale/lang.mk.js
index a6e9b961..0026c25b 100644
--- a/dist/locale/lang.mk.js
+++ b/dist/locale/lang.mk.js
@@ -209,7 +209,7 @@ var svgEditorLang_mk = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ms.js b/dist/locale/lang.ms.js
index 9d367b58..0b3df900 100644
--- a/dist/locale/lang.ms.js
+++ b/dist/locale/lang.ms.js
@@ -209,7 +209,7 @@ var svgEditorLang_ms = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.mt.js b/dist/locale/lang.mt.js
index 5a6f10b3..2fdfc3f6 100644
--- a/dist/locale/lang.mt.js
+++ b/dist/locale/lang.mt.js
@@ -209,7 +209,7 @@ var svgEditorLang_mt = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.nl.js b/dist/locale/lang.nl.js
index 8229fc2f..3b797a54 100644
--- a/dist/locale/lang.nl.js
+++ b/dist/locale/lang.nl.js
@@ -209,7 +209,7 @@ var svgEditorLang_nl = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.no.js b/dist/locale/lang.no.js
index 403716e9..20b982ea 100644
--- a/dist/locale/lang.no.js
+++ b/dist/locale/lang.no.js
@@ -209,7 +209,7 @@ var svgEditorLang_no = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.pl.js b/dist/locale/lang.pl.js
index c43391c4..421394c2 100644
--- a/dist/locale/lang.pl.js
+++ b/dist/locale/lang.pl.js
@@ -210,7 +210,7 @@ var svgEditorLang_pl = (function () {
       unsavedChanges: 'Wykryto niezapisane zmiany.',
       enterNewLinkURL: 'Wpisz nowy adres URL hiperłącza',
       errorLoadingSVG: 'Błąd: Nie można załadować danych SVG',
-      URLloadFail: 'Nie można załadować z adresu URL',
+      URLLoadFail: 'Nie można załadować z adresu URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.pt-BR.js b/dist/locale/lang.pt-BR.js
index 156bfe71..a74a3117 100644
--- a/dist/locale/lang.pt-BR.js
+++ b/dist/locale/lang.pt-BR.js
@@ -208,7 +208,7 @@ var svgEditorLang_pt_BR = (function () {
       unsavedChanges: 'Existem alterações não salvas.',
       enterNewLinkURL: 'Insira novo URL do hyperlink',
       errorLoadingSVG: 'Erro: Impossível carregar dados SVG',
-      URLloadFail: 'Impossível carregar deste URL',
+      URLLoadFail: 'Impossível carregar deste URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.pt-PT.js b/dist/locale/lang.pt-PT.js
index 3f9fa83d..fc447519 100644
--- a/dist/locale/lang.pt-PT.js
+++ b/dist/locale/lang.pt-PT.js
@@ -209,7 +209,7 @@ var svgEditorLang_pt_PT = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ro.js b/dist/locale/lang.ro.js
index cc78e8b8..8a0a62ff 100644
--- a/dist/locale/lang.ro.js
+++ b/dist/locale/lang.ro.js
@@ -208,7 +208,7 @@ var svgEditorLang_ro = (function () {
       unsavedChanges: 'Sunt schimbări nesalvate.',
       enterNewLinkURL: 'IntroduAliniere în raport cu ...sceţi noul URL',
       errorLoadingSVG: 'Eroare: Nu se pot încărca datele SVG',
-      URLloadFail: 'Nu se poate încărca de la URL',
+      URLLoadFail: 'Nu se poate încărca de la URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.ru.js b/dist/locale/lang.ru.js
index 7e9331a4..ac852509 100644
--- a/dist/locale/lang.ru.js
+++ b/dist/locale/lang.ru.js
@@ -209,7 +209,7 @@ var svgEditorLang_ru = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.sk.js b/dist/locale/lang.sk.js
index 229eecc0..84e1ad1c 100644
--- a/dist/locale/lang.sk.js
+++ b/dist/locale/lang.sk.js
@@ -209,7 +209,7 @@ var svgEditorLang_sk = (function () {
       unsavedChanges: 'Sú tu neuložené zmeny.',
       enterNewLinkURL: 'Zadajte nové URL odkazu (hyperlink)',
       errorLoadingSVG: 'Chyba: Nedajú sa načítať SVG data',
-      URLloadFail: 'Nemožno čítať z URL',
+      URLLoadFail: 'Nemožno čítať z URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.sl.js b/dist/locale/lang.sl.js
index f2fc9de0..21da2651 100644
--- a/dist/locale/lang.sl.js
+++ b/dist/locale/lang.sl.js
@@ -208,7 +208,7 @@ var svgEditorLang_sl = (function () {
       unsavedChanges: 'Obstajajo neshranjene spremembe.',
       enterNewLinkURL: 'Vnesite novo URL povezavo',
       errorLoadingSVG: 'Napaka: Ne morem naložiti SVG podatkov',
-      URLloadFail: 'Ne morem naložiti z URL',
+      URLLoadFail: 'Ne morem naložiti z URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.sq.js b/dist/locale/lang.sq.js
index e6d8a351..3f98f8b7 100644
--- a/dist/locale/lang.sq.js
+++ b/dist/locale/lang.sq.js
@@ -209,7 +209,7 @@ var svgEditorLang_sq = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.sr.js b/dist/locale/lang.sr.js
index eea5cae9..b03f8d6f 100644
--- a/dist/locale/lang.sr.js
+++ b/dist/locale/lang.sr.js
@@ -209,7 +209,7 @@ var svgEditorLang_sr = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.sv.js b/dist/locale/lang.sv.js
index 3cf3e977..cf301b16 100644
--- a/dist/locale/lang.sv.js
+++ b/dist/locale/lang.sv.js
@@ -209,7 +209,7 @@ var svgEditorLang_sv = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.sw.js b/dist/locale/lang.sw.js
index 883a6368..ff148f9b 100644
--- a/dist/locale/lang.sw.js
+++ b/dist/locale/lang.sw.js
@@ -209,7 +209,7 @@ var svgEditorLang_sw = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.test.js b/dist/locale/lang.test.js
index a9b972a8..f7831d39 100644
--- a/dist/locale/lang.test.js
+++ b/dist/locale/lang.test.js
@@ -209,7 +209,7 @@ var svgEditorLang_test = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.th.js b/dist/locale/lang.th.js
index 1474091f..2720059a 100644
--- a/dist/locale/lang.th.js
+++ b/dist/locale/lang.th.js
@@ -209,7 +209,7 @@ var svgEditorLang_th = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.tl.js b/dist/locale/lang.tl.js
index f5bdea35..0aa3183f 100644
--- a/dist/locale/lang.tl.js
+++ b/dist/locale/lang.tl.js
@@ -209,7 +209,7 @@ var svgEditorLang_tl = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.tr.js b/dist/locale/lang.tr.js
index c86cbab6..32cf5034 100644
--- a/dist/locale/lang.tr.js
+++ b/dist/locale/lang.tr.js
@@ -209,7 +209,7 @@ var svgEditorLang_tr = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.uk.js b/dist/locale/lang.uk.js
index ab883b9b..cace06da 100644
--- a/dist/locale/lang.uk.js
+++ b/dist/locale/lang.uk.js
@@ -209,7 +209,7 @@ var svgEditorLang_uk = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.vi.js b/dist/locale/lang.vi.js
index a5312cd1..be7c97a0 100644
--- a/dist/locale/lang.vi.js
+++ b/dist/locale/lang.vi.js
@@ -209,7 +209,7 @@ var svgEditorLang_vi = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.yi.js b/dist/locale/lang.yi.js
index 44d5fa4d..f34f537a 100644
--- a/dist/locale/lang.yi.js
+++ b/dist/locale/lang.yi.js
@@ -209,7 +209,7 @@ var svgEditorLang_yi = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.zh-CN.js b/dist/locale/lang.zh-CN.js
index cf544781..b6e25833 100644
--- a/dist/locale/lang.zh-CN.js
+++ b/dist/locale/lang.zh-CN.js
@@ -209,7 +209,7 @@ var svgEditorLang_zh_CN = (function () {
       unsavedChanges: '存在未保存的修改.',
       enterNewLinkURL: '输入新建链接的URL地址',
       errorLoadingSVG: '错误: 无法加载SVG数据',
-      URLloadFail: '无法从URL中加载',
+      URLLoadFail: '无法从URL中加载',
       retrieving: '检索 \'%s\'...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.zh-HK.js b/dist/locale/lang.zh-HK.js
index e1fc6c05..54f322f1 100644
--- a/dist/locale/lang.zh-HK.js
+++ b/dist/locale/lang.zh-HK.js
@@ -209,7 +209,7 @@ var svgEditorLang_zh_HK = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/locale/lang.zh-TW.js b/dist/locale/lang.zh-TW.js
index b3b1dd9d..899d2b0d 100644
--- a/dist/locale/lang.zh-TW.js
+++ b/dist/locale/lang.zh-TW.js
@@ -209,7 +209,7 @@ var svgEditorLang_zh_TW = (function () {
       unsavedChanges: 'There are unsaved changes.',
       enterNewLinkURL: 'Enter the new hyperlink URL',
       errorLoadingSVG: 'Error: Unable to load SVG data',
-      URLloadFail: 'Unable to load from URL',
+      URLLoadFail: 'Unable to load from URL',
       retrieving: 'Retrieving \'%s\' ...',
       popupWindowBlocked: 'Popup window may be blocked by browser',
       exportNoBlur: 'Blurred elements will appear as un-blurred',
diff --git a/dist/redirect-on-lacking-support.js b/dist/redirect-on-lacking-support.js
index 77ae1738..11b41794 100644
--- a/dist/redirect-on-lacking-support.js
+++ b/dist/redirect-on-lacking-support.js
@@ -89,6 +89,11 @@
   * including the latest spec changes which were implemented in Firefox 43 and
   * Chrome 46.
   */
+
+  /* eslint-disable no-shadow, class-methods-use-this */
+  // Linting: We avoid `no-shadow` as ESLint thinks these are still available globals
+  // Linting: We avoid `class-methods-use-this` as this is a polyfill that must
+  //   follow the conventions
   (function () {
     if (!('SVGPathSeg' in window)) {
       // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
@@ -1844,7 +1849,7 @@
               return [];
             }
 
-            var owningPathSegList = this;
+            var owningPathSegList = this; // eslint-disable-line consistent-this
 
             var Builder =
             /*#__PURE__*/
@@ -2194,6 +2199,19 @@
                       return new SVGPathSegClosePath(owningPathSegList);
 
                     case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:
+                      {
+                        var points = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x2: this._parseNumber(),
+                          y2: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
                       {
                         var _points = {
                           x1: this._parseNumber(),
@@ -2203,23 +2221,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
+                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
                       {
                         var _points2 = {
-                          x1: this._parseNumber(),
-                          y1: this._parseNumber(),
                           x2: this._parseNumber(),
                           y2: this._parseNumber(),
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points2.x, _points2.y, _points2.x1, _points2.y1, _points2.x2, _points2.y2);
+                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points2.x, _points2.y, _points2.x2, _points2.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
                       {
                         var _points3 = {
                           x2: this._parseNumber(),
@@ -2227,21 +2243,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
-                      }
-
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
-                      {
-                        var _points4 = {
-                          x2: this._parseNumber(),
-                          y2: this._parseNumber(),
-                          x: this._parseNumber(),
-                          y: this._parseNumber()
-                        };
-                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points4.x, _points4.y, _points4.x2, _points4.y2);
+                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
                       }
 
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:
+                      {
+                        var _points4 = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points4.x, _points4.y, _points4.x1, _points4.y1);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
                       {
                         var _points5 = {
                           x1: this._parseNumber(),
@@ -2249,18 +2265,9 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
+                        return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
-                      var points = {
-                        x1: this._parseNumber(),
-                        y1: this._parseNumber(),
-                        x: this._parseNumber(),
-                        y: this._parseNumber()
-                      };
-                      return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
-
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
                       return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
 
@@ -2416,7 +2423,7 @@
   var $ = jQuery;
 
   var supportsSVG_ = function () {
-    return !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;
+    return Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);
   }();
   /**
    * @function module:browser.supportsSvg
@@ -2431,7 +2438,7 @@
       userAgent = _navigator.userAgent;
   var svg = document.createElementNS(NS.SVG, 'svg'); // Note: Browser sniffing should only be used if no other detection method is possible
 
-  var isOpera_ = !!window.opera;
+  var isOpera_ = Boolean(window.opera);
   var isWebkit_ = userAgent.includes('AppleWebKit');
   var isGecko_ = userAgent.includes('Gecko/');
   var isIE_ = userAgent.includes('MSIE');
@@ -2440,11 +2447,11 @@
   var isMac_ = userAgent.includes('Macintosh');
 
   var supportsSelectors_ = function () {
-    return !!svg.querySelector;
+    return Boolean(svg.querySelector);
   }();
 
   var supportsXpath_ = function () {
-    return !!document.evaluate;
+    return Boolean(document.evaluate);
   }(); // segList functions (for FF1.5 and 2.0)
 
 
diff --git a/docs/jsdoc-config.js b/docs/jsdoc-config.js
index 170f7a1f..2a080ea1 100644
--- a/docs/jsdoc-config.js
+++ b/docs/jsdoc-config.js
@@ -81,7 +81,7 @@ module.exports = {
   opts: {
     recurse: true,
     verbose: true,
-    // destination: 'docs/jsdoc',
+    destination: 'docs/jsdoc',
     tutorials: 'docs/tutorials'
   }
 };
diff --git a/docs/versions/4.0.0.md b/docs/versions/4.0.0.md
new file mode 100644
index 00000000..9b0281db
--- /dev/null
+++ b/docs/versions/4.0.0.md
@@ -0,0 +1,51 @@
+# Version 4.0.0
+
+This version introduces a number of breaking changes, a number being
+required to move to a more Promise-based API and one where problems are
+detected early at run-time by throwing rather than logging.
+
+Some API changes also involve switching to class methods over instance
+methods, though these were private/internally used APIs.
+
+Please see the CHANGES file (or the Git history or Github tracker) for
+fixes and enhancements.
+
+## Breaking changes
+
+- The cookie to track storage preferences is now namespaced as
+  "svgeditstore" instead of just "store".
+- Require `npx` (used with `babel-node`) to allow Node files for HTML
+  building and JSDoc type checking to be expressed as ESM.
+
+### Breaking changes (public API)
+
+#### Callback-to-Promise changes
+
+- `loadSvgString` now returns a `Promise` rather than accepting a callback.
+- Callbacks to `editor.ready` are treated as Promises, only resolving after
+  all resolve. May require no changes unless for timing.
+- `editor.runCallbacks` now returns a `Promise` which resolves upon all
+  callbacks resolving.
+- Removed `svgCanvas.rasterExport` fourth (callback) argument, collapsing
+  fifth (options) to fourth
+- Removed `svgCanvas.exportPDF` third (callback) argument
+- Removed `svgCanvas.embedImage` second (callback) argument
+- Made `getHelpXML` a class instead of instance method of `RGBColor`.
+
+#### Throwing bad arguments instead of mere logging
+
+- `editor/contextmenu.js` `add` now throws instead
+  of giving a console error only upon detecting a bad menuitem or
+  preexisting context menu
+- `addExtension` now throws upon a repeated attempt to add an
+  already-added extension
+
+### Breaking changes (internal API)
+
+- Refactor `dbox` (and
+  `alert`/`confirm`/`process`/`prompt`/`select`) to avoid a callback argument
+  in favor of returning a Promise
+- `updateGripCursor` moved to be class method
+  of Selector rather than instance method
+- `subpathIsClosed` moved to be class method
+  of `Path` rather than instance method
diff --git a/editor/canvg/canvg.js b/editor/canvg/canvg.js
index 5bf8039b..86b62192 100644
--- a/editor/canvg/canvg.js
+++ b/editor/canvg/canvg.js
@@ -1,4 +1,4 @@
-/* eslint-disable new-cap */
+/* eslint-disable new-cap, class-methods-use-this */
 // Todo: Compare with latest canvg (add any improvements of ours) and add full JSDocs (denoting links to standard APIs and which are custom): https://github.com/canvg/canvg
 /**
  * canvg.js - Javascript SVG parser and renderer on Canvas
@@ -20,32 +20,11 @@ const isNullish = (val) => {
   return val === null || val === undefined;
 };
 
-let canvasRGBA_ = canvasRGBA;
-
-/**
-* @callback module:canvg.StackBlurCanvasRGBA
-* @param {string} id
-* @param {Float} x
-* @param {Float} y
-* @param {Float} width
-* @param {Float} height
-* @param {Float} blurRadius
-*/
-
 /**
 * @callback module:canvg.ForceRedraw
 * @returns {boolean}
 */
 
-/**
-* @function module:canvg.setStackBlurCanvasRGBA
-* @param {module:canvg.StackBlurCanvasRGBA} cb Will be passed the canvas ID, x, y, width, height, blurRadius
-* @returns {undefined}
-*/
-export const setStackBlurCanvasRGBA = (cb) => {
-  canvasRGBA_ = cb;
-};
-
 /**
 * @typedef {PlainObject} module:canvg.CanvgOptions
 * @property {boolean} opts.ignoreMouse true => ignore mouse events
@@ -175,12 +154,13 @@ function build (opts) {
   };
 
   // ajax
+  // Todo: Replace with `fetch` and polyfill
   svg.ajax = function (url, asynch) {
     const AJAX = window.XMLHttpRequest
       ? new XMLHttpRequest()
       : new window.ActiveXObject('Microsoft.XMLHTTP');
     if (asynch) {
-      return new Promise((resolve, reject) => {
+      return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
         const req = AJAX.open('GET', url, true);
         req.addEventListener('load', () => {
           resolve(AJAX.responseText);
@@ -393,12 +373,12 @@ function build (opts) {
 
     Parse (s) {
       const f = {};
-      const d = svg.trim(svg.compressSpaces(s || '')).split(' ');
+      const ds = svg.trim(svg.compressSpaces(s || '')).split(' ');
       const set = {
         fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false
       };
       let ff = '';
-      d.forEach((d) => {
+      ds.forEach((d) => {
         if (!set.fontStyle && this.Styles.includes(d)) {
           if (d !== 'inherit') {
             f.fontStyle = d;
@@ -419,8 +399,8 @@ function build (opts) {
             f.fontSize = d.split('/')[0];
           }
           set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
-        } else {
-          if (d !== 'inherit') { ff += d; }
+        } else if (d !== 'inherit') {
+          ff += d;
         }
       });
       if (ff !== '') { f.fontFamily = ff; }
@@ -431,7 +411,7 @@ function build (opts) {
   // points and paths
   svg.ToNumberArray = function (s) {
     const a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
-    return a.map((a) => parseFloat(a));
+    return a.map((_a) => parseFloat(_a));
   };
   svg.Point = class {
     constructor (x, y) {
@@ -598,9 +578,9 @@ function build (opts) {
               ctx.translate(-this.cx, -this.cy);
             };
             this.applyToPoint = function (p) {
-              const a = this.angle.toRadians();
+              const _a = this.angle.toRadians();
               p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
-              p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
+              p.applyTransform([Math.cos(_a), Math.sin(_a), -Math.sin(_a), Math.cos(_a), 0, 0]);
               p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
             };
           }
@@ -727,7 +707,8 @@ function build (opts) {
 
   svg.Element.ElementBase = class {
     constructor (node) {
-      this.captureTextNodes = arguments[1]; // Argument from inheriting class
+      // Argument from inheriting class
+      this.captureTextNodes = arguments[1]; // eslint-disable-line prefer-rest-params
       this.attributes = {};
       this.styles = {};
       this.children = [];
@@ -757,9 +738,9 @@ function build (opts) {
         // add tag styles
         let styles = svg.Styles[node.nodeName];
         if (!isNullish(styles)) {
-          for (const name in styles) {
-            this.styles[name] = styles[name];
-          }
+          Object.entries(styles).forEach(([name, styleValue]) => {
+            this.styles[name] = styleValue;
+          });
         }
 
         // add class styles
@@ -768,33 +749,33 @@ function build (opts) {
           classes.forEach((clss) => {
             styles = svg.Styles['.' + clss];
             if (!isNullish(styles)) {
-              for (const name in styles) {
-                this.styles[name] = styles[name];
-              }
+              Object.entries(styles).forEach(([name, styleValue]) => {
+                this.styles[name] = styleValue;
+              });
             }
             styles = svg.Styles[node.nodeName + '.' + clss];
             if (!isNullish(styles)) {
-              for (const name in styles) {
-                this.styles[name] = styles[name];
-              }
+              Object.entries(styles).forEach(([name, styleValue]) => {
+                this.styles[name] = styleValue;
+              });
             }
           });
         }
 
         // add id styles
         if (this.attribute('id').hasValue()) {
-          const styles = svg.Styles['#' + this.attribute('id').value];
-          if (!isNullish(styles)) {
-            for (const name in styles) {
-              this.styles[name] = styles[name];
-            }
+          const _styles = svg.Styles['#' + this.attribute('id').value];
+          if (!isNullish(_styles)) {
+            Object.entries(_styles).forEach(([name, styleValue]) => {
+              this.styles[name] = styleValue;
+            });
           }
         }
 
         // add inline styles
         if (this.attribute('style').hasValue()) {
-          const styles = this.attribute('style').value.split(';');
-          styles.forEach((style) => {
+          const _styles = this.attribute('style').value.split(';');
+          _styles.forEach((style) => {
             if (svg.trim(style) !== '') {
               let {name, value} = style.split(':');
               name = svg.trim(name);
@@ -1232,9 +1213,9 @@ function build (opts) {
         ctx.moveTo(x, y);
       }
       for (let i = 1; i < this.points.length; i++) {
-        const {x, y} = this.points[i];
-        bb.addPoint(x, y);
-        if (!isNullish(ctx)) ctx.lineTo(x, y);
+        const {x: _x, y: _y} = this.points[i];
+        bb.addPoint(_x, _y);
+        if (!isNullish(ctx)) ctx.lineTo(_x, _y);
       }
       return bb;
     }
@@ -1410,20 +1391,20 @@ function build (opts) {
         pp.nextCommand();
         switch (pp.command) {
         case 'M':
-        case 'm':
+        case 'm': {
           const p = pp.getAsCurrentPoint();
           pp.addMarker(p);
           bb.addPoint(p.x, p.y);
           if (!isNullish(ctx)) ctx.moveTo(p.x, p.y);
           pp.start = pp.current;
           while (!pp.isCommandOrEnd()) {
-            const p = pp.getAsCurrentPoint();
-            pp.addMarker(p, pp.start);
-            bb.addPoint(p.x, p.y);
-            if (!isNullish(ctx)) ctx.lineTo(p.x, p.y);
+            const _p = pp.getAsCurrentPoint();
+            pp.addMarker(_p, pp.start);
+            bb.addPoint(_p.x, _p.y);
+            if (!isNullish(ctx)) ctx.lineTo(_p.x, _p.y);
           }
           break;
-        case 'L':
+        } case 'L':
         case 'l':
           while (!pp.isCommandOrEnd()) {
             const c = pp.current;
@@ -1570,14 +1551,14 @@ function build (opts) {
 
             bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
             if (!isNullish(ctx)) {
-              const r = rx > ry ? rx : ry;
+              const _r = rx > ry ? rx : ry;
               const sx = rx > ry ? 1 : rx / ry;
               const sy = rx > ry ? ry / rx : 1;
 
               ctx.translate(centp.x, centp.y);
               ctx.rotate(xAxisRotation);
               ctx.scale(sx, sy);
-              ctx.arc(0, 0, r, a1, a1 + ad, 1 - sweepFlag);
+              ctx.arc(0, 0, _r, a1, a1 + ad, 1 - sweepFlag);
               ctx.scale(1 / sx, 1 / sy);
               ctx.rotate(-xAxisRotation);
               ctx.translate(-centp.x, -centp.y);
@@ -2115,8 +2096,8 @@ function build (opts) {
 
       child.render(ctx);
 
-      for (let i = 0; i < child.children.length; i++) {
-        this.renderChild(ctx, child, i);
+      for (let j = 0; j < child.children.length; j++) {
+        this.renderChild(ctx, child, j);
       }
     }
   };
@@ -2309,9 +2290,12 @@ function build (opts) {
         };
         this.img.src = href;
       } else {
-        svg.ajax(href, true).then((img) => {
+        svg.ajax(href, true).then((img) => { // eslint-disable-line promise/prefer-await-to-then, promise/always-return
           this.img = img;
           this.loaded = true;
+        }).catch((err) => { // eslint-disable-line promise/prefer-await-to-callbacks
+          this.erred = true;
+          console.error('Ajax error for canvg', err); // eslint-disable-line no-console
         });
       }
     }
@@ -2448,6 +2432,7 @@ function build (opts) {
     getBoundingBox () {
       const {_el: element} = this;
       if (!isNullish(element)) return element.getBoundingBox();
+      return undefined;
     }
 
     renderChildren (ctx) {
@@ -2605,10 +2590,29 @@ function build (opts) {
     }
   };
 
+  /**
+  * @param {Uint8ClampedArray} img
+  * @param {Integer} x
+  * @param {Integer} y
+  * @param {Float} width
+  * @param {Float} height
+  * @param {Integer} rgba
+  * @returns {undefined}
+  */
   function imGet (img, x, y, width, height, rgba) {
     return img[y * width * 4 + x * 4 + rgba];
   }
 
+  /**
+  * @param {Uint8ClampedArray} img
+  * @param {Integer} x
+  * @param {Integer} y
+  * @param {Float} width
+  * @param {Float} height
+  * @param {Integer} rgba
+  * @param {Float} val
+  * @returns {undefined}
+  */
   function imSet (img, x, y, width, height, rgba, val) {
     img[y * width * 4 + x * 4 + rgba] = val;
   }
@@ -2619,7 +2623,7 @@ function build (opts) {
 
       let matrix = svg.ToNumberArray(this.attribute('values').value);
       switch (this.attribute('type').valueOrDefault('matrix')) { // https://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
-      case 'saturate':
+      case 'saturate': {
         const s = matrix[0];
         matrix = [
           0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0,
@@ -2629,7 +2633,7 @@ function build (opts) {
           0, 0, 0, 0, 1
         ];
         break;
-      case 'hueRotate':
+      } case 'hueRotate': {
         const a = matrix[0] * Math.PI / 180.0;
         const c = function (m1, m2, m3) {
           return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
@@ -2642,7 +2646,7 @@ function build (opts) {
           0, 0, 0, 0, 1
         ];
         break;
-      case 'luminanceToAlpha':
+      } case 'luminanceToAlpha':
         matrix = [
           0, 0, 0, 0, 0,
           0, 0, 0, 0, 0,
@@ -2663,16 +2667,16 @@ function build (opts) {
       const {_m: m} = this;
       // assuming x==0 && y==0 for now
       const srcData = ctx.getImageData(0, 0, width, height);
-      for (let y = 0; y < height; y++) {
-        for (let x = 0; x < width; x++) {
-          const r = imGet(srcData.data, x, y, width, height, 0);
-          const g = imGet(srcData.data, x, y, width, height, 1);
-          const b = imGet(srcData.data, x, y, width, height, 2);
-          const a = imGet(srcData.data, x, y, width, height, 3);
-          imSet(srcData.data, x, y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
-          imSet(srcData.data, x, y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
-          imSet(srcData.data, x, y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
-          imSet(srcData.data, x, y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
+      for (let _y = 0; _y < height; _y++) {
+        for (let _x = 0; _x < width; _x++) {
+          const r = imGet(srcData.data, _x, _y, width, height, 0);
+          const g = imGet(srcData.data, _x, _y, width, height, 1);
+          const b = imGet(srcData.data, _x, _y, width, height, 2);
+          const a = imGet(srcData.data, _x, _y, width, height, 3);
+          imSet(srcData.data, _x, _y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
+          imSet(srcData.data, _x, _y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
+          imSet(srcData.data, _x, _y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
+          imSet(srcData.data, _x, _y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
         }
       }
       ctx.clearRect(0, 0, width, height);
@@ -2689,17 +2693,12 @@ function build (opts) {
     }
 
     apply (ctx, x, y, width, height) {
-      if (typeof canvasRGBA_ !== 'function') {
-        svg.log('ERROR: The function `setStackBlurCanvasRGBA` must be present for blur to work');
-        return;
-      }
-
       // Todo: This might not be a problem anymore with out `instanceof` fix
       // StackBlur requires canvas be on document
       ctx.canvas.id = svg.UniqueId();
       ctx.canvas.style.display = 'none';
       document.body.append(ctx.canvas);
-      canvasRGBA_(ctx.canvas, x, y, width, height, this.blurRadius);
+      canvasRGBA(ctx.canvas, x, y, width, height, this.blurRadius);
       ctx.canvas.remove();
     }
   };
@@ -2773,14 +2772,14 @@ function build (opts) {
       ctx.canvas.onclick = function (e) {
         const args = !isNullish(e)
           ? [e.clientX, e.clientY]
-          : [event.clientX, event.clientY];
+          : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
         const {x, y} = mapXY(new svg.Point(...args));
         svg.Mouse.onclick(x, y);
       };
       ctx.canvas.onmousemove = function (e) {
         const args = !isNullish(e)
           ? [e.clientX, e.clientY]
-          : [event.clientX, event.clientY];
+          : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
         const {x, y} = mapXY(new svg.Point(...args));
         svg.Mouse.onmousemove(x, y);
       };
@@ -2878,13 +2877,14 @@ function build (opts) {
 
       // need update from mouse events?
       if (svg.opts.ignoreMouse !== true) {
-        needUpdate = needUpdate | svg.Mouse.hasEvents();
+        needUpdate = needUpdate || svg.Mouse.hasEvents();
       }
 
       // need update from animations?
       if (svg.opts.ignoreAnimation !== true) {
         svg.Animations.forEach((animation) => {
-          needUpdate = needUpdate | animation.update(1000 / svg.FRAMERATE);
+          const needAnimationUpdate = animation.update(1000 / svg.FRAMERATE);
+          needUpdate = needUpdate || needAnimationUpdate;
         });
       }
 
@@ -2901,7 +2901,8 @@ function build (opts) {
         svg.Mouse.runEvents(); // run and clear our events
       }
     }, 1000 / svg.FRAMERATE);
-    return new Promise((resolve, reject) => {
+    // Todo: Replace with an image loading Promise utility?
+    return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
       if (svg.ImagesLoaded()) {
         waitingForImages = false;
         draw(resolve);
diff --git a/editor/canvg/rgbcolor.js b/editor/canvg/rgbcolor.js
index aadcb1c5..12e7594e 100644
--- a/editor/canvg/rgbcolor.js
+++ b/editor/canvg/rgbcolor.js
@@ -156,34 +156,22 @@ const colorDefs = [
   {
     re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
     example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
-    process (bits) {
-      return [
-        parseInt(bits[1]),
-        parseInt(bits[2]),
-        parseInt(bits[3])
-      ];
+    process (_, ...bits) {
+      return bits.map((b) => parseInt(b));
     }
   },
   {
     re: /^(\w{2})(\w{2})(\w{2})$/,
     example: ['#00ff00', '336699'],
-    process (bits) {
-      return [
-        parseInt(bits[1], 16),
-        parseInt(bits[2], 16),
-        parseInt(bits[3], 16)
-      ];
+    process (_, ...bits) {
+      return bits.map((b) => parseInt(b, 16));
     }
   },
   {
     re: /^(\w{1})(\w{1})(\w{1})$/,
     example: ['#fb0', 'f0f'],
-    process (bits) {
-      return [
-        parseInt(bits[1] + bits[1], 16),
-        parseInt(bits[2] + bits[2], 16),
-        parseInt(bits[3] + bits[3], 16)
-      ];
+    process (_, ...bits) {
+      return bits.map((b) => parseInt(b + b, 16));
     }
   }
 ];
@@ -214,16 +202,15 @@ export default class RGBColor {
     // end of simple type-in colors
 
     // search through the definitions to find a match
-    for (let i = 0; i < colorDefs.length; i++) {
-      const {re} = colorDefs[i];
-      const processor = colorDefs[i].process;
+
+    colorDefs.forEach(({re, process: processor}) => {
       const bits = re.exec(colorString);
       if (bits) {
         const [r, g, b] = processor(bits);
         Object.assign(this, {r, g, b});
         this.ok = true;
       }
-    }
+    }, this);
 
     // validate/cleanup values
     this.r = (this.r < 0 || isNaN(this.r)) ? 0 : ((this.r > 255) ? 255 : this.r);
@@ -251,41 +238,42 @@ export default class RGBColor {
     if (b.length === 1) { b = '0' + b; }
     return '#' + r + g + b;
   }
+}
 
-  /**
-  * Offers a bulleted list of help.
-  * @returns {HTMLUListElement}
-  */
-  getHelpXML () {
-    const examples = [];
+/**
+* Offers a bulleted list of help.
+* @returns {HTMLUListElement}
+*/
+RGBColor.getHelpXML = function () {
+  const examples = [
     // add regexps
-    for (let i = 0; i < colorDefs.length; i++) {
-      const {example} = colorDefs[i];
-      for (let j = 0; j < example.length; j++) {
-        examples[examples.length] = example[j];
-      }
-    }
+    ...colorDefs.flatMap(({example}) => {
+      return example;
+    }),
     // add type-in colors
-    examples.push(...Object.keys(simpleColors));
+    ...Object.keys(simpleColors)
+  ];
 
-    const xml = document.createElement('ul');
-    xml.setAttribute('id', 'rgbcolor-examples');
-    for (let i = 0; i < examples.length; i++) {
-      try {
-        const listItem = document.createElement('li');
-        const listColor = new RGBColor(examples[i]);
-        const exampleDiv = document.createElement('div');
-        exampleDiv.style.cssText = `
+  const xml = document.createElement('ul');
+  xml.setAttribute('id', 'rgbcolor-examples');
+
+  xml.append(...examples.map((example) => {
+    try {
+      const listItem = document.createElement('li');
+      const listColor = new RGBColor(example);
+      const exampleDiv = document.createElement('div');
+      exampleDiv.style.cssText = `
 margin: 3px;
 border: 1px solid black;
 background: ${listColor.toHex()};
 color: ${listColor.toHex()};`;
-        exampleDiv.append('test');
-        const listItemValue = ` ${examples[i]} -> ${listColor.toRGB()} -> ${listColor.toHex()}`;
-        listItem.append(exampleDiv, listItemValue);
-        xml.append(listItem);
-      } catch (e) {}
+      exampleDiv.append('test');
+      const listItemValue = ` ${example} -> ${listColor.toRGB()} -> ${listColor.toHex()}`;
+      listItem.append(exampleDiv, listItemValue);
+      return listItem;
+    } catch (e) {
+      return '';
     }
-    return xml;
-  }
-}
+  }));
+  return xml;
+};
diff --git a/editor/contextmenu.js b/editor/contextmenu.js
index e91232d9..9483af26 100644
--- a/editor/contextmenu.js
+++ b/editor/contextmenu.js
@@ -36,20 +36,19 @@ const menuItemIsValid = function (menuItem) {
 /**
 * @function module:contextmenu.add
 * @param {module:contextmenu.MenuItem} menuItem
+* @throws {Error|TypeError}
 * @returns {undefined}
 */
 export const add = function (menuItem) {
   // menuItem: {id, label, shortcut, action}
   if (!menuItemIsValid(menuItem)) {
-    console.error('Menu items must be defined and have at least properties: id, label, action, where action must be a function');
-    return;
+    throw new TypeError('Menu items must be defined and have at least properties: id, label, action, where action must be a function');
   }
   if (menuItem.id in contextMenuExtensions) {
-    console.error('Cannot add extension "' + menuItem.id + '", an extension by that name already exists"');
-    return;
+    throw new Error('Cannot add extension "' + menuItem.id + '", an extension by that name already exists"');
   }
   // Register menuItem action, see below for deferred menu dom injection
-  console.log('Registed contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}');
+  console.log('Registered contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}'); // eslint-disable-line no-console
   contextMenuExtensions[menuItem.id] = menuItem;
   // TODO: Need to consider how to handle custom enable/disable behavior
 };
diff --git a/editor/contextmenu/jQuery.contextMenu.js b/editor/contextmenu/jQuery.contextMenu.js
index 9468115a..3ff82d0c 100755
--- a/editor/contextmenu/jQuery.contextMenu.js
+++ b/editor/contextmenu/jQuery.contextMenu.js
@@ -20,7 +20,7 @@
 import {isMac} from '../browser.js';
 
 /**
-* @callback module:jQueryContextMenu.jQueryContextMenuCallback
+* @callback module:jQueryContextMenu.jQueryContextMenuListener
 * @param {string} href The `href` value after the first character (for bypassing an initial `#`)
 * @param {external:jQuery} srcElement The wrapped jQuery srcElement
 * @param {{x: Float, y: Float, docX: Float, docY: Float}} coords
@@ -53,10 +53,10 @@ function jQueryContextMenu ($) {
     /**
     * @memberof external:jQuery.fn
     * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o
-    * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback
+    * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener
     * @returns {external:jQuery}
     */
-    contextMenu (o, callback) {
+    contextMenu (o, listener) {
       // Defaults
       if (o.menu === undefined) return false;
       if (o.inSpeed === undefined) o.inSpeed = 150;
@@ -78,86 +78,88 @@ function jQueryContextMenu ($) {
           $(this).mouseup(function (e) {
             const srcElement = $(this);
             srcElement.unbind('mouseup');
-            if (evt.button === 2 || o.allowLeft ||
-              (evt.ctrlKey && isMac())) {
-              e.stopPropagation();
-              // Hide context menus that may be showing
+
+            if (!(evt.button === 2 || o.allowLeft ||
+              (evt.ctrlKey && isMac()))) {
+              return undefined;
+            }
+            e.stopPropagation();
+            // Hide context menus that may be showing
+            $('.contextMenu').hide();
+            // Get this context menu
+
+            if (el.hasClass('disabled')) return false;
+
+            // Detect mouse position
+            let x = e.pageX, y = e.pageY;
+
+            const xOff = win.width() - menu.width(),
+              yOff = win.height() - menu.height();
+
+            if (x > xOff - 15) x = xOff - 15;
+            if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
+
+            // Show the menu
+            doc.unbind('click');
+            menu.css({top: y, left: x}).fadeIn(o.inSpeed);
+            // Hover events
+            menu.find('A').mouseover(function () {
+              menu.find('LI.hover').removeClass('hover');
+              $(this).parent().addClass('hover');
+            }).mouseout(function () {
+              menu.find('LI.hover').removeClass('hover');
+            });
+
+            // Keyboard
+            doc.keypress(function (ev) {
+              switch (ev.keyCode) {
+              case 38: // up
+                if (!menu.find('LI.hover').length) {
+                  menu.find('LI:last').addClass('hover');
+                } else {
+                  menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
+                  if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
+                }
+                break;
+              case 40: // down
+                if (!menu.find('LI.hover').length) {
+                  menu.find('LI:first').addClass('hover');
+                } else {
+                  menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
+                  if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
+                }
+                break;
+              case 13: // enter
+                menu.find('LI.hover A').trigger('click');
+                break;
+              case 27: // esc
+                doc.trigger('click');
+                break;
+              }
+            });
+
+            // When items are selected
+            menu.find('A').unbind('mouseup');
+            menu.find('LI:not(.disabled) A').mouseup(function () {
+              doc.unbind('click').unbind('keypress');
               $('.contextMenu').hide();
-              // Get this context menu
+              if (listener) {
+                listener($(this).attr('href').substr(1), $(srcElement), {
+                  x: x - offset.left, y: y - offset.top, docX: x, docY: y
+                });
+              }
+              return false;
+            });
 
-              if (el.hasClass('disabled')) return false;
-
-              // Detect mouse position
-              let x = e.pageX, y = e.pageY;
-
-              const xOff = win.width() - menu.width(),
-                yOff = win.height() - menu.height();
-
-              if (x > xOff - 15) x = xOff - 15;
-              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
-
-              // Show the menu
-              doc.unbind('click');
-              menu.css({top: y, left: x}).fadeIn(o.inSpeed);
-              // Hover events
-              menu.find('A').mouseover(function () {
-                menu.find('LI.hover').removeClass('hover');
-                $(this).parent().addClass('hover');
-              }).mouseout(function () {
-                menu.find('LI.hover').removeClass('hover');
-              });
-
-              // Keyboard
-              doc.keypress(function (ev) {
-                switch (ev.keyCode) {
-                case 38: // up
-                  if (!menu.find('LI.hover').length) {
-                    menu.find('LI:last').addClass('hover');
-                  } else {
-                    menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
-                    if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
-                  }
-                  break;
-                case 40: // down
-                  if (!menu.find('LI.hover').length) {
-                    menu.find('LI:first').addClass('hover');
-                  } else {
-                    menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
-                    if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
-                  }
-                  break;
-                case 13: // enter
-                  menu.find('LI.hover A').trigger('click');
-                  break;
-                case 27: // esc
-                  doc.trigger('click');
-                  break;
-                }
-              });
-
-              // When items are selected
-              menu.find('A').unbind('mouseup');
-              menu.find('LI:not(.disabled) A').mouseup(function () {
+            // Hide bindings
+            setTimeout(function () { // Delay for Mozilla
+              doc.click(function () {
                 doc.unbind('click').unbind('keypress');
-                $('.contextMenu').hide();
-                // Callback
-                if (callback) {
-                  callback($(this).attr('href').substr(1), $(srcElement), {
-                    x: x - offset.left, y: y - offset.top, docX: x, docY: y
-                  });
-                }
+                menu.fadeOut(o.outSpeed);
                 return false;
               });
-
-              // Hide bindings
-              setTimeout(function () { // Delay for Mozilla
-                doc.click(function () {
-                  doc.unbind('click').unbind('keypress');
-                  menu.fadeOut(o.outSpeed);
-                  return false;
-                });
-              }, 0);
-            }
+            }, 0);
+            return undefined;
           });
         });
 
diff --git a/editor/dbox.js b/editor/dbox.js
new file mode 100644
index 00000000..7b9b50ea
--- /dev/null
+++ b/editor/dbox.js
@@ -0,0 +1,165 @@
+/**
+ * @module jQueryPluginDBox
+ */
+/**
+* @param {external:jQuery} $
+* @param {PlainObject} [strings]
+* @param {PlainObject} [strings.ok]
+* @param {PlainObject} [strings.cancel]
+* @returns {external:jQuery}
+*/
+export default function jQueryPluginDBox ($, strings = {ok: 'Ok', cancel: 'Cancel'}) {
+  // This sets up alternative dialog boxes. They mostly work the same way as
+  // their UI counterparts, expect instead of returning the result, a callback
+  // needs to be included that returns the result as its first parameter.
+  // In the future we may want to add additional types of dialog boxes, since
+  // they should be easy to handle this way.
+  $('#dialog_container').draggable({
+    cancel: '#dialog_content, #dialog_buttons *',
+    containment: 'window'
+  }).css('position', 'absolute');
+
+  const box = $('#dialog_box'),
+    btnHolder = $('#dialog_buttons'),
+    dialogContent = $('#dialog_content');
+
+  /**
+  * Resolves to `false` (if cancelled), for prompts and selects
+  * without checkboxes, it resolves to the value of the form control. For other
+  * types without checkboxes, it resolves to `true`. For checkboxes, it resolves
+  * to an object with the `response` key containing the same value as the previous
+  * mentioned (string or `true`) and a `checked` (boolean) property.
+  * @typedef {Promise} module:jQueryPluginDBox.PromiseResult
+  */
+  /**
+  * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption
+  * @property {string} text
+  * @property {string} value
+  */
+  /**
+  * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo
+  * @property {string} label Label for the checkbox
+  * @property {string} value Value of the checkbox
+  * @property {string} tooltip Tooltip on the checkbox label
+  * @property {boolean} checked Whether the checkbox is checked by default
+  */
+  /**
+   * Triggered upon a change of value for the select pull-down.
+   * @callback module:jQueryPluginDBox.SelectChangeListener
+   * @returns {undefined}
+   */
+  /**
+  * @param {"alert"|"prompt"|"select"|"process"} type
+  * @param {string} msg
+  * @param {string} [defaultVal]
+  * @param {module:jQueryPluginDBox.SelectOption[]} [opts]
+  * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]
+  * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+  function dbox (type, msg, defaultVal, opts, changeListener, checkbox) {
+    dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>')
+      .toggleClass('prompt', (type === 'prompt'));
+    btnHolder.empty();
+
+    const ok = $('<input type="button" value="' + strings.ok + '">').appendTo(btnHolder);
+
+    return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
+      if (type !== 'alert') {
+        $('<input type="button" value="' + strings.cancel + '">')
+          .appendTo(btnHolder)
+          .click(function () {
+            box.hide();
+            resolve(false);
+          });
+      }
+
+      let ctrl, chkbx;
+      if (type === 'prompt') {
+        ctrl = $('<input type="text">').prependTo(btnHolder);
+        ctrl.val(defaultVal || '');
+        ctrl.bind('keydown', 'return', function () { ok.click(); });
+      } else if (type === 'select') {
+        const div = $('<div style="text-align:center;">');
+        ctrl = $('<select>').appendTo(div);
+        if (checkbox) {
+          const label = $('<label>').text(checkbox.label);
+          chkbx = $('<input type="checkbox">').appendTo(label);
+          chkbx.val(checkbox.value);
+          if (checkbox.tooltip) {
+            label.attr('title', checkbox.tooltip);
+          }
+          chkbx.prop('checked', Boolean(checkbox.checked));
+          div.append($('<div>').append(label));
+        }
+        $.each(opts || [], function (opt, val) {
+          if (typeof val === 'object') {
+            ctrl.append($('<option>').val(val.value).html(val.text));
+          } else {
+            ctrl.append($('<option>').html(val));
+          }
+        });
+        dialogContent.append(div);
+        if (defaultVal) {
+          ctrl.val(defaultVal);
+        }
+        if (changeListener) {
+          ctrl.bind('change', 'return', changeListener);
+        }
+        ctrl.bind('keydown', 'return', function () { ok.click(); });
+      } else if (type === 'process') {
+        ok.hide();
+      }
+
+      box.show();
+
+      ok.click(function () {
+        box.hide();
+        const response = (type === 'prompt' || type === 'select') ? ctrl.val() : true;
+        if (chkbx) {
+          resolve({response, checked: chkbx.prop('checked')});
+          return;
+        }
+        resolve(response);
+      }).focus();
+
+      if (type === 'prompt' || type === 'select') {
+        ctrl.focus();
+      }
+    });
+  }
+
+  /**
+  * @param {string} msg Message to alert
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+  $.alert = function (msg) {
+    return dbox('alert', msg);
+  };
+  /**
+  * @param {string} msg Message for which to ask confirmation
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+  $.confirm = function (msg) {
+    return dbox('confirm', msg);
+  };
+  /**
+  * @param {string} msg Message to indicate upon cancelable indicator
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+  $.process_cancel = function (msg) {
+    return dbox('process', msg);
+  };
+  /**
+  * @param {string} msg Message to accompany the prompt
+  * @param {string} [defaultText=''] The default text to show for the prompt
+  * @returns {jQueryPluginDBox.PromiseResult}
+  */
+  $.prompt = function (msg, defaultText = '') {
+    return dbox('prompt', msg, defaultText);
+  };
+  $.select = function (msg, opts, changeListener, txt, checkbox) {
+    return dbox('select', msg, txt, opts, changeListener, checkbox);
+  };
+  return $;
+}
diff --git a/editor/embedapi-dom.js b/editor/embedapi-dom.js
index 371975b8..2a09b52e 100644
--- a/editor/embedapi-dom.js
+++ b/editor/embedapi-dom.js
@@ -10,23 +10,42 @@ const $ = jQuery;
 
 let svgCanvas = null;
 
+/**
+* @param {string} data
+* @param {string} error
+* @returns {undefined}
+*/
 function handleSvgData (data, error) {
   if (error) {
-    alert('error ' + error);
+    // Todo: This should be replaced with a general purpose dialog alert library call
+    alert('error ' + error); // eslint-disable-line no-alert
   } else {
-    alert('Congratulations. Your SVG string is back in the host page, do with it what you will\n\n' + data);
+    // Todo: This should be replaced with a general purpose dialog alert library call
+    alert('Congratulations. Your SVG string is back in the host page, do with it what you will\n\n' + data); // eslint-disable-line no-alert
   }
 }
 
+/**
+* Set the canvas with an example SVG string.
+* @returns {undefined}
+*/
 function loadSvg () {
   const svgexample = '<svg width="640" height="480" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g><title>Layer 1</title><rect stroke-width="5" stroke="#000000" fill="#FF0000" id="svg_1" height="35" width="51" y="35" x="32"/><ellipse ry="15" rx="24" stroke-width="5" stroke="#000000" fill="#0000ff" id="svg_2" cy="60" cx="66"/></g></svg>';
   svgCanvas.setSvgString(svgexample);
 }
 
+/**
+*
+* @returns {undefined}
+*/
 function saveSvg () {
   svgCanvas.getSvgString()(handleSvgData);
 }
 
+/**
+* Perform a PNG export.
+* @returns {undefined}
+*/
 function exportPNG () {
   svgCanvas.getUIStrings()(function (uiStrings) {
     const str = uiStrings.notification.loadingImage;
@@ -41,6 +60,10 @@ function exportPNG () {
   });
 }
 
+/**
+* Perform a PDF export.
+* @returns {undefined}
+*/
 function exportPDF () {
   svgCanvas.getUIStrings()(function (uiStrings) {
     const str = uiStrings.notification.loadingImage;
@@ -83,7 +106,7 @@ iframe[0].addEventListener('load', function () {
   try {
     doc = frame.contentDocument || frame.contentWindow.document;
   } catch (err) {
-    console.log('Blocked from accessing document', err);
+    console.log('Blocked from accessing document', err); // eslint-disable-line no-console
   }
   if (doc) {
     // Todo: Provide a way to get this to occur by `postMessage`
diff --git a/editor/embedapi.js b/editor/embedapi.js
index 310a9cbd..4dd36abe 100644
--- a/editor/embedapi.js
+++ b/editor/embedapi.js
@@ -334,10 +334,10 @@ class EmbeddedSVGEdit {
   /**
   * @param {string} name
   * @param {ArgumentsArray} args Signature dependent on function
-  * @param {GenericCallback} callback
+  * @param {GenericCallback} callback (This may be better than a promise in case adding an event.)
   * @returns {Integer}
   */
-  send (name, args, callback) {
+  send (name, args, callback) { // eslint-disable-line promise/prefer-await-to-callbacks
     const that = this;
     cbid++;
 
diff --git a/editor/extensions/ext-arrows.js b/editor/extensions/ext-arrows.js
index 1636dd23..56a816eb 100644
--- a/editor/extensions/ext-arrows.js
+++ b/editor/extensions/ext-arrows.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-arrows.js
  *
@@ -13,22 +12,30 @@ export default {
     const strings = await S.importLocale();
     const svgEditor = this;
     const svgCanvas = svgEditor.canvas;
-    const $ = jQuery;
     const // {svgcontent} = S,
       addElem = svgCanvas.addSVGElementFromJson,
-      {nonce} = S,
+      {nonce, $} = S,
       prefix = 'se_arrow_';
 
     let selElems, arrowprefix, randomizeIds = S.randomize_ids;
 
-    function setArrowNonce (window, n) {
+    /**
+    * @param {Window} win
+    * @param {!(string|Integer)} n
+    * @returns {undefined}
+    */
+    function setArrowNonce (win, n) {
       randomizeIds = true;
       arrowprefix = prefix + n + '_';
       pathdata.fw.id = arrowprefix + 'fw';
       pathdata.bk.id = arrowprefix + 'bk';
     }
 
-    function unsetArrowNonce (window) {
+    /**
+    * @param {Window} win
+    * @returns {undefined}
+    */
+    function unsetArrowNonce (win) {
       randomizeIds = false;
       arrowprefix = prefix;
       pathdata.fw.id = arrowprefix + 'fw';
@@ -49,6 +56,12 @@ export default {
       bk: {d: 'm10,0l-10,5l10,5l-5,-5l5,-5z', refx: 2, id: arrowprefix + 'bk'}
     };
 
+    /**
+     * Gets linked element.
+     * @param {Element} elem
+     * @param {string} attr
+     * @returns {Element}
+    */
     function getLinked (elem, attr) {
       const str = elem.getAttribute(attr);
       if (!str) { return null; }
@@ -59,6 +72,10 @@ export default {
       return svgCanvas.getElem(m[1]);
     }
 
+    /**
+    * @param {boolean} on
+    * @returns {undefined}
+    */
     function showPanel (on) {
       $('#arrow_panel').toggle(on);
       if (on) {
@@ -88,6 +105,10 @@ export default {
       }
     }
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function resetMarker () {
       const el = selElems[0];
       el.removeAttribute('marker-start');
@@ -95,6 +116,12 @@ export default {
       el.removeAttribute('marker-end');
     }
 
+    /**
+    * @param {"bk"|"fw"} dir
+    * @param {"both"|"mid"|"end"|"start"} type
+    * @param {string} id
+    * @returns {Element}
+    */
     function addMarker (dir, type, id) {
       // TODO: Make marker (or use?) per arrow type, since refX can be different
       id = id || arrowprefix + dir;
@@ -136,6 +163,10 @@ export default {
       return marker;
     }
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function setArrow () {
       resetMarker();
 
@@ -163,6 +194,10 @@ export default {
       svgCanvas.call('changed', selElems);
     }
 
+    /**
+    * @param {Element} elem
+    * @returns {undefined}
+    */
     function colorChanged (elem) {
       const color = elem.getAttribute('stroke');
       const mtypes = ['start', 'mid', 'end'];
@@ -183,7 +218,7 @@ export default {
           const attrs = $(this).children().attr(['fill', 'd']);
           if (attrs.fill === color && attrs.d === curD) {
             // Found another marker with this color and this path
-            newMarker = this;
+            newMarker = this; // eslint-disable-line consistent-this
           }
         });
 
@@ -202,14 +237,16 @@ export default {
         // Check if last marker can be removed
         let remove = true;
         $(S.svgcontent).find('line, polyline, path, polygon').each(function () {
-          const elem = this;
+          const element = this; // eslint-disable-line consistent-this
           $.each(mtypes, function (j, mtype) {
-            if ($(elem).attr('marker-' + mtype) === 'url(#' + marker.id + ')') {
+            if ($(element).attr('marker-' + mtype) === 'url(#' + marker.id + ')') {
               remove = false;
               return remove;
             }
+            return undefined;
           });
           if (!remove) { return false; }
+          return undefined;
         });
 
         // Not found, so can safely remove
@@ -242,9 +279,9 @@ export default {
         $('#arrow_list option')[0].id = 'connector_no_arrow';
       },
       async addLangData ({lang, importLocale}) {
-        const strings = await importLocale();
+        const {langList} = await importLocale();
         return {
-          data: strings.langList
+          data: langList
         };
       },
       selectedChanged (opts) {
diff --git a/editor/extensions/ext-closepath.js b/editor/extensions/ext-closepath.js
index 9406e361..7482eb8e 100644
--- a/editor/extensions/ext-closepath.js
+++ b/editor/extensions/ext-closepath.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-closepath.js
  *
@@ -13,9 +12,8 @@ import '../svgpathseg.js';
 // The button toggles whether the path is open or closed
 export default {
   name: 'closepath',
-  async init ({importLocale}) {
+  async init ({importLocale, $}) {
     const strings = await importLocale();
-    const $ = jQuery;
     const svgEditor = this;
     let selElems;
     const updateButton = function (path) {
diff --git a/editor/extensions/ext-connector.js b/editor/extensions/ext-connector.js
index f41152ae..ef25a02a 100644
--- a/editor/extensions/ext-connector.js
+++ b/editor/extensions/ext-connector.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-connector.js
  *
@@ -11,11 +10,10 @@
 export default {
   name: 'connector',
   async init (S) {
-    const $ = jQuery;
     const svgEditor = this;
     const svgCanvas = svgEditor.canvas;
     const {getElem} = svgCanvas;
-    const {svgroot, importLocale} = S,
+    const {$, svgroot, importLocale} = S,
       addElem = svgCanvas.addSVGElementFromJson,
       selManager = S.selectorManager,
       connSel = '.se_connector',
@@ -34,6 +32,14 @@ export default {
       connections = [],
       selElems = [];
 
+    /**
+     *
+     * @param {Float} x
+     * @param {Float} y
+     * @param {module:utilities.BBoxObject} bb
+     * @param {Float} offset
+     * @returns {module:math.XYObject}
+     */
     function getBBintersect (x, y, bb, offset) {
       if (offset) {
         offset -= 0;
@@ -66,6 +72,11 @@ export default {
       };
     }
 
+    /**
+    * @param {"start"|"end"} side
+    * @param {Element} line
+    * @returns {Float}
+    */
     function getOffset (side, line) {
       const giveOffset = line.getAttribute('marker-' + side);
       // const giveOffset = $(line).data(side+'_off');
@@ -75,6 +86,10 @@ export default {
       return giveOffset ? size : 0;
     }
 
+    /**
+    * @param {boolean} on
+    * @returns {undefined}
+    */
     function showPanel (on) {
       let connRules = $('#connector_rules');
       if (!connRules.length) {
@@ -84,6 +99,14 @@ export default {
       $('#connector_panel').toggle(on);
     }
 
+    /**
+     * @param {Element} elem
+     * @param {Integer|"end"} pos
+     * @param {Float} x
+     * @param {Float} y
+     * @param {boolean} [setMid]
+     * @returns {undefined}
+    */
     function setPoint (elem, pos, x, y, setMid) {
       const pts = elem.points;
       const pt = svgroot.createSVGPoint();
@@ -112,6 +135,11 @@ export default {
       }
     }
 
+    /**
+    * @param {Float} diffX
+    * @param {Float} diffY
+    * @returns {undefined}
+    */
     function updateLine (diffX, diffY) {
       // Update line with element
       let i = connections.length;
@@ -158,6 +186,10 @@ export default {
       // Loop through connectors to see if one is connected to the element
       connectors.each(function () {
         let addThis;
+        /**
+        *
+        * @returns {undefined}
+        */
         function add () {
           if (elems.includes(this)) {
             // Pretend this element is selected
@@ -205,6 +237,10 @@ export default {
       });
     }
 
+    /**
+    * @param {Element[]} [elems=selElems]
+    * @returns {undefined}
+    */
     function updateConnectors (elems) {
       // Updates connector lines based on selected elements
       // Is not used on mousemove, as it runs getStrokedBBox every time,
@@ -278,7 +314,10 @@ export default {
       seNs = svgCanvas.getEditorNS();
     }());
 
-    // Do on reset
+    /**
+    * Do on reset.
+    * @returns {undefined}
+    */
     function init () {
       // Make sure all connectors have data set
       $(svgcontent).find('*').each(function () {
@@ -331,7 +370,7 @@ export default {
       buttons: strings.buttons.map((button, i) => {
         return Object.assign(buttons[i], button);
       }),
-      /* async */ addLangData ({lang, importLocale}) {
+      /* async */ addLangData ({lang}) { // , importLocale: importLoc
         return {
           data: strings.langList
         };
@@ -344,7 +383,7 @@ export default {
         const {curConfig: {initStroke}} = svgEditor;
 
         if (mode === 'connector') {
-          if (started) { return; }
+          if (started) { return undefined; }
 
           const mouseTarget = e.target;
 
@@ -386,6 +425,7 @@ export default {
         if (mode === 'select') {
           findConnectors();
         }
+        return undefined;
       },
       mouseMove (opts) {
         const zoom = svgCanvas.getZoom();
@@ -433,7 +473,7 @@ export default {
         let mouseTarget = e.target;
 
         if (svgCanvas.getMode() !== 'connector') {
-          return;
+          return undefined;
         }
         const fo = $(mouseTarget).closest('foreignObject');
         if (fo.length) { mouseTarget = fo[0]; }
@@ -469,6 +509,7 @@ export default {
         const dupe = $(svgcontent).find(connSel).filter(function () {
           const conn = this.getAttributeNS(seNs, 'connector');
           if (conn === connStr || conn === altStr) { return true; }
+          return false;
         });
         if (dupe.length) {
           $(curLine).remove();
@@ -596,7 +637,7 @@ export default {
 
             // Check validity - the field would be something like 'svg_21 svg_22', but
             // if one end is missing, it would be 'svg_21' and therefore fail this test
-            if (!/. ./.test(elem.attr['se:connector'])) {
+            if (!(/. ./).test(elem.attr['se:connector'])) {
               remove.push(elem.attr.id);
             }
           }
diff --git a/editor/extensions/ext-eyedropper.js b/editor/extensions/ext-eyedropper.js
index 3acaa298..6e63f3f7 100644
--- a/editor/extensions/ext-eyedropper.js
+++ b/editor/extensions/ext-eyedropper.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-eyedropper.js
  *
@@ -13,8 +12,7 @@ export default {
   async init (S) {
     const strings = await S.importLocale();
     const svgEditor = this;
-    const $ = jQuery;
-    const {ChangeElementCommand} = S, // , svgcontent,
+    const {$, ChangeElementCommand} = S, // , svgcontent,
       // svgdoc = S.svgroot.parentNode.ownerDocument,
       svgCanvas = svgEditor.canvas,
       addToHistory = function (cmd) { svgCanvas.undoMgr.addCommandToHistory(cmd); },
@@ -27,6 +25,11 @@ export default {
         strokeLinejoin: 'miter'
       };
 
+    /**
+     *
+     * @param {module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementChanged} opts
+     * @returns {undefined}
+     */
     function getStyle (opts) {
       // if we are in eyedropper mode, we don't want to disable the eye-dropper tool
       const mode = svgCanvas.getMode();
diff --git a/editor/extensions/ext-foreignobject.js b/editor/extensions/ext-foreignobject.js
index a39f88c7..5a72b25f 100644
--- a/editor/extensions/ext-foreignobject.js
+++ b/editor/extensions/ext-foreignobject.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-foreignobject.js
  *
@@ -12,8 +11,7 @@ export default {
   name: 'foreignobject',
   async init (S) {
     const svgEditor = this;
-    const {text2xml, NS, importLocale} = S;
-    const $ = jQuery;
+    const {$, text2xml, NS, importLocale} = S;
     const svgCanvas = svgEditor.canvas;
     const
       // {svgcontent} = S,
@@ -27,6 +25,10 @@ export default {
       $('#svg_source_textarea').css('height', height);
     };
 
+    /**
+    * @param {boolean} on
+    * @returns {undefined}
+    */
     function showPanel (on) {
       let fcRules = $('#fc_rules');
       if (!fcRules.length) {
@@ -36,6 +38,10 @@ export default {
       $('#foreignObject_panel').toggle(on);
     }
 
+    /**
+    * @param {boolean} on
+    * @returns {undefined}
+    */
     function toggleSourceButtons (on) {
       $('#tool_source_save, #tool_source_cancel').toggle(!on);
       $('#foreign_save, #foreign_cancel').toggle(on);
@@ -62,13 +68,18 @@ export default {
         svgCanvas.call('changed', [elt]);
         svgCanvas.clearSelection();
       } catch (e) {
-        console.log(e);
+        // Todo: Surface error to user
+        console.log(e); // eslint-disable-line no-console
         return false;
       }
 
       return true;
     }
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function showForeignEditor () {
       const elt = selElems[0];
       if (!elt || editingforeign) { return; }
@@ -83,6 +94,11 @@ export default {
       $('#svg_source_textarea').focus();
     }
 
+    /**
+    * @param {string} attr
+    * @param {string|Float} val
+    * @returns {undefined}
+    */
     function setAttr (attr, val) {
       svgCanvas.changeSelectedAttribute(attr, val);
       svgCanvas.call('changed', selElems);
@@ -167,14 +183,13 @@ export default {
           // Create source save/cancel buttons
           /* const save = */ $('#tool_source_save').clone()
             .hide().attr('id', 'foreign_save').unbind()
-            .appendTo('#tool_source_back').click(function () {
+            .appendTo('#tool_source_back').click(async function () {
               if (!editingforeign) { return; }
 
               if (!setForeignString($('#svg_source_textarea').val())) {
-                $.confirm('Errors found. Revert to original?', function (ok) {
-                  if (!ok) { return false; }
-                  endChanges();
-                });
+                const ok = await $.confirm('Errors found. Revert to original?');
+                if (!ok) { return; }
+                endChanges();
               } else {
                 endChanges();
               }
@@ -190,50 +205,51 @@ export default {
       },
       mouseDown (opts) {
         // const e = opts.event;
-
-        if (svgCanvas.getMode() === 'foreign') {
-          started = true;
-          newFO = svgCanvas.addSVGElementFromJson({
-            element: 'foreignObject',
-            attr: {
-              x: opts.start_x,
-              y: opts.start_y,
-              id: svgCanvas.getNextId(),
-              'font-size': 16, // cur_text.font_size,
-              width: '48',
-              height: '20',
-              style: 'pointer-events:inherit'
-            }
-          });
-          const m = svgdoc.createElementNS(NS.MATH, 'math');
-          m.setAttributeNS(NS.XMLNS, 'xmlns', NS.MATH);
-          m.setAttribute('display', 'inline');
-          const mi = svgdoc.createElementNS(NS.MATH, 'mi');
-          mi.setAttribute('mathvariant', 'normal');
-          mi.textContent = '\u03A6';
-          const mo = svgdoc.createElementNS(NS.MATH, 'mo');
-          mo.textContent = '\u222A';
-          const mi2 = svgdoc.createElementNS(NS.MATH, 'mi');
-          mi2.textContent = '\u2133';
-          m.append(mi, mo, mi2);
-          newFO.append(m);
-          return {
-            started: true
-          };
+        if (svgCanvas.getMode() !== 'foreign') {
+          return undefined;
         }
+        started = true;
+        newFO = svgCanvas.addSVGElementFromJson({
+          element: 'foreignObject',
+          attr: {
+            x: opts.start_x,
+            y: opts.start_y,
+            id: svgCanvas.getNextId(),
+            'font-size': 16, // cur_text.font_size,
+            width: '48',
+            height: '20',
+            style: 'pointer-events:inherit'
+          }
+        });
+        const m = svgdoc.createElementNS(NS.MATH, 'math');
+        m.setAttributeNS(NS.XMLNS, 'xmlns', NS.MATH);
+        m.setAttribute('display', 'inline');
+        const mi = svgdoc.createElementNS(NS.MATH, 'mi');
+        mi.setAttribute('mathvariant', 'normal');
+        mi.textContent = '\u03A6';
+        const mo = svgdoc.createElementNS(NS.MATH, 'mo');
+        mo.textContent = '\u222A';
+        const mi2 = svgdoc.createElementNS(NS.MATH, 'mi');
+        mi2.textContent = '\u2133';
+        m.append(mi, mo, mi2);
+        newFO.append(m);
+        return {
+          started: true
+        };
       },
       mouseUp (opts) {
         // const e = opts.event;
-        if (svgCanvas.getMode() === 'foreign' && started) {
-          const attrs = $(newFO).attr(['width', 'height']);
-          const keep = (attrs.width !== '0' || attrs.height !== '0');
-          svgCanvas.addToSelection([newFO], true);
-
-          return {
-            keep,
-            element: newFO
-          };
+        if (svgCanvas.getMode() !== 'foreign' || !started) {
+          return undefined;
         }
+        const attrs = $(newFO).attr(['width', 'height']);
+        const keep = (attrs.width !== '0' || attrs.height !== '0');
+        svgCanvas.addToSelection([newFO], true);
+
+        return {
+          keep,
+          element: newFO
+        };
       },
       selectedChanged (opts) {
         // Use this to update the current selected elements
diff --git a/editor/extensions/ext-grid.js b/editor/extensions/ext-grid.js
index 831c46bb..a356a230 100644
--- a/editor/extensions/ext-grid.js
+++ b/editor/extensions/ext-grid.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-grid.js
  *
@@ -10,10 +9,9 @@
 
 export default {
   name: 'grid',
-  async init ({NS, getTypeMap, importLocale}) {
+  async init ({$, NS, getTypeMap, importLocale}) {
     const strings = await importLocale();
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
     const svgdoc = document.getElementById('svgcanvas').ownerDocument,
       {assignAttributes} = svgCanvas,
@@ -72,6 +70,11 @@ export default {
     });
     $('#canvasGrid').append(gridBox);
 
+    /**
+     *
+     * @param {Float} zoom
+     * @returns {undefined}
+     */
     function updateGrid (zoom) {
       // TODO: Try this with <line> elements, then compare performance difference
       const unit = units[svgEditor.curConfig.baseUnit]; // 1 = 1px
@@ -124,6 +127,10 @@ export default {
       svgCanvas.setHref(gridimg, datauri);
     }
 
+    /**
+     *
+     * @returns {undefined}
+     */
     function gridUpdate () {
       if (showGrid) {
         updateGrid(svgCanvas.getZoom());
diff --git a/editor/extensions/ext-helloworld.js b/editor/extensions/ext-helloworld.js
index 631dda5b..b36bf892 100644
--- a/editor/extensions/ext-helloworld.js
+++ b/editor/extensions/ext-helloworld.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-helloworld.js
  *
@@ -15,11 +14,10 @@
 */
 export default {
   name: 'helloworld',
-  async init ({importLocale}) {
+  async init ({$, importLocale}) {
     // See `/editor/extensions/ext-locale/helloworld/`
     const strings = await importLocale();
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
     return {
       name: strings.name,
@@ -61,6 +59,7 @@ export default {
           // a value of true in order for mouseUp to be triggered
           return {started: true};
         }
+        return undefined;
       },
 
       // This is triggered from anywhere, but "started" must have been set
diff --git a/editor/extensions/ext-imagelib.js b/editor/extensions/ext-imagelib.js
index 138b92c2..bc867734 100644
--- a/editor/extensions/ext-imagelib.js
+++ b/editor/extensions/ext-imagelib.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-imagelib.js
  *
@@ -9,7 +8,7 @@
  */
 export default {
   name: 'imagelib',
-  async init ({decode64, importLocale, dropXMLInternalSubset}) {
+  async init ({$, decode64, importLocale, dropXMLInternalSubset}) {
     const imagelibStrings = await importLocale();
 
     const modularVersion = !('svgEditor' in window) ||
@@ -18,16 +17,17 @@ export default {
 
     const svgEditor = this;
 
-    const $ = jQuery;
     const {uiStrings, canvas: svgCanvas, curConfig: {extIconsPath}} = svgEditor;
 
     imagelibStrings.imgLibs = imagelibStrings.imgLibs.map(({name, url, description}) => {
       // Todo: Adopt some standard formatting library like `fluent.js` instead
       url = url
         .replace(/\{path\}/g, extIconsPath)
-        .replace(/\{modularVersion\}/g, modularVersion
-          ? (imagelibStrings.moduleEnding || '-es')
-          : ''
+        .replace(
+          /\{modularVersion\}/g,
+          modularVersion
+            ? (imagelibStrings.moduleEnding || '-es')
+            : ''
         );
       return {name, url, description};
     });
@@ -39,10 +39,18 @@ export default {
       }
     });
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function closeBrowser () {
       $('#imgbrowse_holder').hide();
     }
 
+    /**
+    * @param {string} url
+    * @returns {undefined}
+    */
     function importImage (url) {
       const newImage = svgCanvas.addSVGElementFromJson({
         element: 'image',
@@ -68,7 +76,7 @@ export default {
     let preview, submit;
 
     // Receive `postMessage` data
-    window.addEventListener('message', function ({origin, data: response}) {
+    window.addEventListener('message', async function ({origin, data: response}) { // eslint-disable-line no-shadow
       if (!response || !['string', 'object'].includes(typeof response)) {
         // Do nothing
         return;
@@ -84,7 +92,8 @@ export default {
           return;
         }
         if (!allowedImageLibOrigins.includes('*') && !allowedImageLibOrigins.includes(origin)) {
-          console.log(`Origin ${origin} not whitelisted for posting to ${window.origin}`);
+          // Todo: Surface this error to user?
+          console.log(`Origin ${origin} not whitelisted for posting to ${window.origin}`); // eslint-disable-line no-console
           return;
         }
         const hasName = 'name' in response;
@@ -140,12 +149,11 @@ export default {
         const message = uiStrings.notification.retrieving.replace('%s', name);
 
         if (mode !== 'm') {
-          $.process_cancel(message, function () {
-            transferStopped = true;
-            // Should a message be sent back to the frame?
+          await $.process_cancel(message);
+          transferStopped = true;
+          // Should a message be sent back to the frame?
 
-            $('#dialog_box').hide();
-          });
+          $('#dialog_box').hide();
         } else {
           entry = $('<div>').text(message).data('id', curMeta.id);
           preview.append(entry);
@@ -183,7 +191,7 @@ export default {
         } else {
           pending[id].entry.remove();
         }
-        // $.alert('Unexpected data was returned: ' + response, function() {
+        // await $.alert('Unexpected data was returned: ' + response, function() {
         //   if (mode !== 'm') {
         //     closeBrowser();
         //   } else {
@@ -203,7 +211,7 @@ export default {
         }
         closeBrowser();
         break;
-      case 'm':
+      case 'm': {
         // Import multiple
         multiArr.push([(svgStr ? 'svg' : 'img'), response]);
         curMeta = pending[id];
@@ -265,20 +273,24 @@ export default {
           }
         }
         break;
-      case 'o':
+      } case 'o': {
         // Open
         if (!svgStr) { break; }
-        svgEditor.openPrep(function (ok) {
-          if (!ok) { return; }
-          svgCanvas.clear();
-          svgCanvas.setSvgString(response);
-          // updateCanvas();
-        });
         closeBrowser();
+        const ok = await svgEditor.openPrep();
+        if (!ok) { return; }
+        svgCanvas.clear();
+        svgCanvas.setSvgString(response);
+        // updateCanvas();
         break;
       }
+      }
     }, true);
 
+    /**
+    * @param {boolean} show
+    * @returns {undefined}
+    */
     function toggleMulti (show) {
       $('#lib_framewrap, #imglib_opts').css({right: (show ? 200 : 10)});
       if (!preview) {
@@ -319,6 +331,10 @@ export default {
       submit.toggle(show);
     }
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function showBrowser () {
       let browser = $('#imgbrowse');
       if (!browser.length) {
diff --git a/editor/extensions/ext-markers.js b/editor/extensions/ext-markers.js
index cde37c69..9ab5403d 100644
--- a/editor/extensions/ext-markers.js
+++ b/editor/extensions/ext-markers.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-markers.js
  *
@@ -34,7 +33,7 @@ export default {
   async init (S) {
     const strings = await S.importLocale();
     const svgEditor = this;
-    const $ = jQuery;
+    const {$} = S;
     const svgCanvas = svgEditor.canvas;
     const // {svgcontent} = S,
       addElem = svgCanvas.addSVGElementFromJson;
@@ -94,6 +93,12 @@ export default {
       return svgCanvas.getElem(m[1]);
     }
 
+    /**
+     *
+     * @param {"start"|"mid"|"end"} pos
+     * @param {string} id
+     * @returns {undefined}
+     */
     function setIcon (pos, id) {
       if (id.substr(0, 1) !== '\\') { id = '\\textmarker'; }
       const ci = '#' + idPrefix + pos + '_' + id.substr(1);
@@ -102,8 +107,12 @@ export default {
     }
 
     let selElems;
-    // toggles context tool panel off/on
-    // sets the controls with the selected element's settings
+    /**
+     * Toggles context tool panel off/on. Sets the controls with the
+     *   selected element's settings.
+     * @param {boolean} on
+     * @returns {undefined}
+    */
     function showPanel (on) {
       $('#marker_panel').toggle(on);
 
@@ -135,15 +144,20 @@ export default {
       }
     }
 
+    /**
+    * @param {string} id
+    * @param {""|"\\nomarker"|"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} val
+    * @returns {undefined}
+    */
     function addMarker (id, val) {
       const txtBoxBg = '#ffffff';
       const txtBoxBorder = 'none';
       const txtBoxStrokeWidth = 0;
 
       let marker = svgCanvas.getElem(id);
-      if (marker) { return; }
+      if (marker) { return undefined; }
 
-      if (val === '' || val === '\\nomarker') { return; }
+      if (val === '' || val === '\\nomarker') { return undefined; }
 
       const el = selElems[0];
       const color = el.getAttribute('stroke');
@@ -161,7 +175,7 @@ export default {
         seType = val.substr(1);
       } else { seType = 'textmarker'; }
 
-      if (!markerTypes[seType]) { return; } // an unknown type!
+      if (!markerTypes[seType]) { return undefined; } // an unknown type!
 
       // create a generic marker
       marker = addElem({
@@ -233,6 +247,10 @@ export default {
       return marker;
     }
 
+    /**
+    * @param {Element} elem
+    * @returns {SVGPolylineElement}
+    */
     function convertline (elem) {
       // this routine came from the connectors extension
       // it is needed because midpoint markers don't work with line elements
@@ -275,6 +293,10 @@ export default {
       return pline;
     }
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function setMarker () {
       const poslist = {start_marker: 'start', mid_marker: 'mid', end_marker: 'end'};
       const pos = poslist[this.id];
@@ -301,8 +323,12 @@ export default {
       setIcon(pos, val);
     }
 
-    // called when the main system modifies an object
-    // this routine changes the associated markers to be the same color
+    /**
+     * Called when the main system modifies an object. This routine changes
+     *   the associated markers to be the same color.
+     * @param {Element} elem
+     * @returns {undefined}
+    */
     function colorChanged (elem) {
       const color = elem.getAttribute('stroke');
 
@@ -319,8 +345,12 @@ export default {
       });
     }
 
-    // called when the main system creates or modifies an object
-    // primary purpose is create new markers for cloned objects
+    /**
+    * Called when the main system creates or modifies an object.
+    * Its primary purpose is to create new markers for cloned objects.
+    * @param {Element} el
+    * @returns {undefined}
+    */
     function updateReferences (el) {
       $.each(mtypes, function (i, pos) {
         const id = markerPrefix + pos + '_' + el.id;
@@ -343,6 +373,11 @@ export default {
     }
 
     // simulate a change event a text box that stores the current element's marker type
+    /**
+    * @param {"start"|"mid"|"end"} pos
+    * @param {string} val
+    * @returns {undefined}
+    */
     function triggerTextEntry (pos, val) {
       $('#' + pos + '_marker').val(val);
       $('#' + pos + '_marker').change();
@@ -351,12 +386,17 @@ export default {
       // else {txtbox.show();}
     }
 
-    function showTextPrompt (pos) {
+    /**
+    * @param {"start"|"mid"|"end"} pos
+    * @returns {Promise} Resolves to `undefined`
+    */
+    async function showTextPrompt (pos) {
       let def = $('#' + pos + '_marker').val();
       if (def.substr(0, 1) === '\\') { def = ''; }
-      $.prompt('Enter text for ' + pos + ' marker', def, function (txt) {
-        if (txt) { triggerTextEntry(pos, txt); }
-      });
+      const txt = await $.prompt('Enter text for ' + pos + ' marker', def);
+      if (txt) {
+        triggerTextEntry(pos, txt);
+      }
     }
 
     /*
@@ -372,18 +412,23 @@ export default {
       case 'dimension':
         triggerTextEntry('start','\\leftarrow');
         triggerTextEntry('end','\\rightarrow');
-        showTextPrompt('mid');
+        await showTextPrompt('mid');
         break;
       case 'label':
         triggerTextEntry('mid','\\nomarker');
         triggerTextEntry('end','\\rightarrow');
-        showTextPrompt('start');
+        await showTextPrompt('start');
         break;
       }
     }
     */
+
     // callback function for a toolbar button click
-    function setArrowFromButton (obj) {
+    /**
+    * @param {Event} ev
+    * @returns {Promise} Resolves to `undefined`
+    */
+    async function setArrowFromButton (ev) {
       const parts = this.id.split('_');
       const pos = parts[1];
       let val = parts[2];
@@ -392,20 +437,27 @@ export default {
       if (val !== 'textmarker') {
         triggerTextEntry(pos, '\\' + val);
       } else {
-        showTextPrompt(pos);
+        await showTextPrompt(pos);
       }
     }
 
+    /**
+    * @param {"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} id
+    * @returns {undefined}
+    */
     function getTitle (id) {
       const {langList} = strings;
-      const item = langList.find((item) => {
-        return item.id === id;
+      const item = langList.find((itm) => {
+        return itm.id === id;
       });
       return item ? item.title : id;
     }
 
-    // build the toolbar button array from the marker definitions
-    function buildButtonList (lang) {
+    /**
+    * Build the toolbar button array from the marker definitions.
+    * @returns {module:SVGEditor.Button[]}
+    */
+    function buildButtonList () {
       const buttons = [];
       // const i = 0;
       /*
@@ -500,7 +552,7 @@ export default {
       callback () {
         $('#marker_panel').addClass('toolset').hide();
       },
-      async addLangData ({importLocale, lang}) {
+      /* async */ addLangData ({importLocale, lang}) {
         return {data: strings.langList};
       },
       selectedChanged (opts) {
diff --git a/editor/extensions/ext-mathjax.js b/editor/extensions/ext-mathjax.js
index 75b0ba94..408a0e90 100644
--- a/editor/extensions/ext-mathjax.js
+++ b/editor/extensions/ext-mathjax.js
@@ -1,4 +1,4 @@
-/* globals jQuery, MathJax */
+/* globals MathJax */
 /**
  * ext-mathjax.js
  *
@@ -12,10 +12,9 @@ import {importScript} from '../external/dynamic-import-polyfill/importModule.js'
 
 export default {
   name: 'mathjax',
-  async init ({importLocale}) {
+  async init ({$, importLocale}) {
     const strings = await importLocale();
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
 
     // Configuration of the MathJax extention.
@@ -54,7 +53,8 @@ export default {
       locationY,
       mathjaxLoaded = false;
 
-    // TODO: Implement language support. Move these uiStrings to the locale files and the code to the langReady callback.
+    // TODO: Implement language support. Move these uiStrings to the locale files and
+    //   the code to the langReady callback. Also i18nize alert and HTML below
     $.extend(uiStrings, {
       mathjax: {
         embed_svg: 'Save as mathematics',
@@ -65,6 +65,10 @@ export default {
       }
     });
 
+    /**
+     *
+     * @returns {undefined}
+     */
     function saveMath () {
       const code = $('#mathjax_code_textarea').val();
       // displaystyle to force MathJax NOT to use the inline style. Because it is
@@ -122,11 +126,15 @@ export default {
       type: 'mode',
       icon: svgEditor.curConfig.extIconsPath + 'mathjax.png',
       events: {
-        click () {
+        async click () {
+          // Set the mode.
+          svgCanvas.setMode('mathjax');
+
           // Only load Mathjax when needed, we don't want to strain Svg-Edit any more.
           // From this point on it is very probable that it will be needed, so load it.
           if (mathjaxLoaded === false) {
-            $('<div id="mathjax">' +
+            $(
+              '<div id="mathjax">' +
               '<!-- Here is where MathJax creates the math -->' +
                 '<div id="mathjax_creator" class="tex2jax_process" style="display:none">' +
                   '$${}$$' +
@@ -191,21 +199,20 @@ export default {
             */
             // We use `extIconsPath` here for now as it does not vary with
             //  the modular type as does `extPath`
-            importScript(svgEditor.curConfig.extIconsPath + mathjaxSrcSecure).then(() => {
+            try {
+              await importScript(svgEditor.curConfig.extIconsPath + mathjaxSrcSecure);
               // When MathJax is loaded get the div where the math will be rendered.
               MathJax.Hub.queue.Push(function () {
                 math = MathJax.Hub.getAllJax('#mathjax_creator')[0];
-                console.log(math);
+                console.log(math); // eslint-disable-line no-console
                 mathjaxLoaded = true;
-                console.log('MathJax Loaded');
+                console.log('MathJax Loaded'); // eslint-disable-line no-console
               });
-            }).catch(() => {
-              console.log('Failed loadeing MathJax.');
+            } catch (e) {
+              console.log('Failed loading MathJax.'); // eslint-disable-line no-console
               $.alert('Failed loading MathJax. You will not be able to change the mathematics.');
-            });
+            }
           }
-          // Set the mode.
-          svgCanvas.setMode('mathjax');
         }
       }
     }];
@@ -221,6 +228,7 @@ export default {
         if (svgCanvas.getMode() === 'mathjax') {
           return {started: true};
         }
+        return undefined;
       },
       mouseUp (opts) {
         if (svgCanvas.getMode() === 'mathjax') {
@@ -233,6 +241,7 @@ export default {
           $('#mathjax').show();
           return {started: false}; // Otherwise the last selected object dissapears.
         }
+        return undefined;
       },
       callback () {
         $('<style>').text(
diff --git a/editor/extensions/ext-overview_window.js b/editor/extensions/ext-overview_window.js
index e90617f4..d918e37c 100644
--- a/editor/extensions/ext-overview_window.js
+++ b/editor/extensions/ext-overview_window.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-overview_window.js
  *
@@ -9,8 +8,7 @@
  */
 export default {
   name: 'overview_window',
-  init ({isChrome, isIE}) {
-    const $ = jQuery;
+  init ({$, isChrome, isIE}) {
     const overviewWindowGlobals = {};
     // Disabled in Chrome 48-, see https://github.com/SVG-Edit/svgedit/issues/26 and
     // https://code.google.com/p/chromium/issues/detail?id=565120.
@@ -18,7 +16,7 @@ export default {
       const verIndex = navigator.userAgent.indexOf('Chrome/') + 7;
       const chromeVersion = parseInt(navigator.userAgent.substring(verIndex));
       if (chromeVersion < 49) {
-        return;
+        return undefined;
       }
     }
 
diff --git a/editor/extensions/ext-panning.js b/editor/extensions/ext-panning.js
index 7c1500ef..0b8e2251 100644
--- a/editor/extensions/ext-panning.js
+++ b/editor/extensions/ext-panning.js
@@ -36,6 +36,7 @@ export default {
           svgEditor.setPanning(true);
           return {started: true};
         }
+        return undefined;
       },
       mouseUp () {
         if (svgCanvas.getMode() === 'ext-panning') {
@@ -45,6 +46,7 @@ export default {
             element: null
           };
         }
+        return undefined;
       }
     };
   }
diff --git a/editor/extensions/ext-php_savefile.js b/editor/extensions/ext-php_savefile.js
index 5d481c26..89a55400 100644
--- a/editor/extensions/ext-php_savefile.js
+++ b/editor/extensions/ext-php_savefile.js
@@ -1,13 +1,15 @@
-/* globals jQuery */
 // TODO: Might add support for "exportImage" custom
 //   handler as in "ext-server_opensave.js" (and in savefile.php)
 
 export default {
   name: 'php_savefile',
-  init () {
+  init ({$}) {
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
+    /**
+     * Get file name out of SVGEdit document title.
+     * @returns {string}
+     */
     function getFileNameFromTitle () {
       const title = svgCanvas.getDocumentTitle();
       return title.trim();
diff --git a/editor/extensions/ext-polygon.js b/editor/extensions/ext-polygon.js
index ff30605f..7557def3 100644
--- a/editor/extensions/ext-polygon.js
+++ b/editor/extensions/ext-polygon.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-polygon.js
  *
@@ -10,9 +9,8 @@ export default {
   name: 'polygon',
   async init (S) {
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
-    const {importLocale} = S, // {svgcontent}
+    const {$, importLocale} = S, // {svgcontent}
       // addElem = svgCanvas.addSVGElementFromJson,
       editingitex = false;
     const strings = await importLocale();
@@ -37,6 +35,11 @@ export default {
      const height = $('#svg_source_container').height() - 80;
      $('#svg_source_textarea').css('height', height);
      }; */
+
+    /**
+    * @param {boolean} on
+    * @returns {undefined}
+    */
     function showPanel (on) {
       let fcRules = $('#fc_rules');
       if (!fcRules.length) {
@@ -53,15 +56,28 @@ export default {
     }
     */
 
+    /**
+    * @param {string} attr
+    * @param {string|Float} val
+    * @returns {undefined}
+    */
     function setAttr (attr, val) {
       svgCanvas.changeSelectedAttribute(attr, val);
       svgCanvas.call('changed', selElems);
     }
 
+    /**
+    * @param {Float} n
+    * @returns {Float}
+    */
     function cot (n) {
       return 1 / Math.tan(n);
     }
 
+    /**
+    * @param {Float} n
+    * @returns {Float}
+    */
     function sec (n) {
       return 1 / Math.cos(n);
     }
@@ -148,6 +164,7 @@ export default {
         $('#polygon_panel').hide();
 
         const endChanges = function () {
+          // Todo: Missing?
         };
 
         // TODO: Needs to be done after orig icon loads
@@ -160,12 +177,11 @@ export default {
             // Todo: Uncomment the setItexString() function above and handle ajaxEndpoint?
             /*
             if (!setItexString($('#svg_source_textarea').val())) {
-              $.confirm('Errors found. Revert to original?', function (ok) {
-                if (!ok) {
-                  return false;
-                }
-                endChanges();
-              });
+              const ok = await $.confirm('Errors found. Revert to original?', function (ok) {
+              if (!ok) {
+                return false;
+              }
+              endChanges();
             } else { */
             endChanges();
             // }
@@ -178,6 +194,9 @@ export default {
         }, 3000);
       },
       mouseDown (opts) {
+        if (svgCanvas.getMode() !== 'polygon') {
+          return undefined;
+        }
         // const e = opts.event;
         const rgb = svgCanvas.getColor('fill');
         // const ccRgbEl = rgb.substring(1, rgb.length);
@@ -185,79 +204,76 @@ export default {
         // ccSRgbEl = sRgb.substring(1, rgb.length);
         const sWidth = svgCanvas.getStrokeWidth();
 
-        if (svgCanvas.getMode() === 'polygon') {
-          started = true;
+        started = true;
 
-          newFO = svgCanvas.addSVGElementFromJson({
-            element: 'polygon',
-            attr: {
-              cx: opts.start_x,
-              cy: opts.start_y,
-              id: svgCanvas.getNextId(),
-              shape: 'regularPoly',
-              sides: document.getElementById('polySides').value,
-              orient: 'x',
-              edge: 0,
-              fill: rgb,
-              strokecolor: sRgb,
-              strokeWidth: sWidth
-            }
-          });
+        newFO = svgCanvas.addSVGElementFromJson({
+          element: 'polygon',
+          attr: {
+            cx: opts.start_x,
+            cy: opts.start_y,
+            id: svgCanvas.getNextId(),
+            shape: 'regularPoly',
+            sides: document.getElementById('polySides').value,
+            orient: 'x',
+            edge: 0,
+            fill: rgb,
+            strokecolor: sRgb,
+            strokeWidth: sWidth
+          }
+        });
 
-          return {
-            started: true
-          };
-        }
+        return {
+          started: true
+        };
       },
       mouseMove (opts) {
-        if (!started) {
-          return;
+        if (!started || svgCanvas.getMode() !== 'polygon') {
+          return undefined;
         }
-        if (svgCanvas.getMode() === 'polygon') {
-          // const e = opts.event;
-          const c = $(newFO).attr(['cx', 'cy', 'sides', 'orient', 'fill', 'strokecolor', 'strokeWidth']);
-          let x = opts.mouse_x;
-          let y = opts.mouse_y;
-          const {cx, cy, fill, strokecolor, strokeWidth, sides} = c, // {orient} = c,
-            edg = (Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy))) / 1.5;
-          newFO.setAttribute('edge', edg);
+        // const e = opts.event;
+        const c = $(newFO).attr(['cx', 'cy', 'sides', 'orient', 'fill', 'strokecolor', 'strokeWidth']);
+        let x = opts.mouse_x;
+        let y = opts.mouse_y;
+        const {cx, cy, fill, strokecolor, strokeWidth, sides} = c, // {orient} = c,
+          edg = (Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy))) / 1.5;
+        newFO.setAttribute('edge', edg);
 
-          const inradius = (edg / 2) * cot(Math.PI / sides);
-          const circumradius = inradius * sec(Math.PI / sides);
-          let points = '';
-          for (let s = 0; sides >= s; s++) {
-            const angle = 2.0 * Math.PI * s / sides;
-            x = (circumradius * Math.cos(angle)) + cx;
-            y = (circumradius * Math.sin(angle)) + cy;
+        const inradius = (edg / 2) * cot(Math.PI / sides);
+        const circumradius = inradius * sec(Math.PI / sides);
+        let points = '';
+        for (let s = 0; sides >= s; s++) {
+          const angle = 2.0 * Math.PI * s / sides;
+          x = (circumradius * Math.cos(angle)) + cx;
+          y = (circumradius * Math.sin(angle)) + cy;
 
-            points += x + ',' + y + ' ';
-          }
-
-          // const poly = newFO.createElementNS(NS.SVG, 'polygon');
-          newFO.setAttribute('points', points);
-          newFO.setAttribute('fill', fill);
-          newFO.setAttribute('stroke', strokecolor);
-          newFO.setAttribute('stroke-width', strokeWidth);
-          // newFO.setAttribute('transform', 'rotate(-90)');
-          // const shape = newFO.getAttribute('shape');
-          // newFO.append(poly);
-          // DrawPoly(cx, cy, sides, edg, orient);
-          return {
-            started: true
-          };
+          points += x + ',' + y + ' ';
         }
+
+        // const poly = newFO.createElementNS(NS.SVG, 'polygon');
+        newFO.setAttribute('points', points);
+        newFO.setAttribute('fill', fill);
+        newFO.setAttribute('stroke', strokecolor);
+        newFO.setAttribute('stroke-width', strokeWidth);
+        // newFO.setAttribute('transform', 'rotate(-90)');
+        // const shape = newFO.getAttribute('shape');
+        // newFO.append(poly);
+        // DrawPoly(cx, cy, sides, edg, orient);
+        return {
+          started: true
+        };
       },
 
       mouseUp (opts) {
-        if (svgCanvas.getMode() === 'polygon') {
-          const attrs = $(newFO).attr('edge');
-          const keep = (attrs.edge !== '0');
-          // svgCanvas.addToSelection([newFO], true);
-          return {
-            keep,
-            element: newFO
-          };
+        if (svgCanvas.getMode() !== 'polygon') {
+          return undefined;
         }
+        const attrs = $(newFO).attr('edge');
+        const keep = (attrs.edge !== '0');
+        // svgCanvas.addToSelection([newFO], true);
+        return {
+          keep,
+          element: newFO
+        };
       },
       selectedChanged (opts) {
         // Use this to update the current selected elements
diff --git a/editor/extensions/ext-server_moinsave.js b/editor/extensions/ext-server_moinsave.js
index 3a32c270..63842dd0 100644
--- a/editor/extensions/ext-server_moinsave.js
+++ b/editor/extensions/ext-server_moinsave.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-server_moinsave.js
  *
@@ -12,10 +11,9 @@ import {canvg} from '../canvg/canvg.js';
 
 export default {
   name: 'server_moinsave',
-  async init ({encode64, importLocale}) {
+  async init ({$, encode64, importLocale}) {
     const strings = await importLocale();
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
     const saveSvgAction = '/+modify';
 
@@ -48,7 +46,7 @@ export default {
           .append('<input type="hidden" name="contenttype" value="application/x-svgdraw">')
           .appendTo('body')
           .submit().remove();
-        alert(strings.saved);
+        $.alert(strings.saved);
         top.window.location = '/' + name;
       }
     });
diff --git a/editor/extensions/ext-server_opensave.js b/editor/extensions/ext-server_opensave.js
index 0f023bac..637c26a7 100644
--- a/editor/extensions/ext-server_opensave.js
+++ b/editor/extensions/ext-server_opensave.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-server_opensave.js
  *
@@ -11,19 +10,35 @@ import {canvg} from '../canvg/canvg.js';
 
 export default {
   name: 'server_opensave',
-  async init ({decode64, encode64, importLocale}) {
+  async init ({$, decode64, encode64, importLocale}) {
     const strings = await importLocale();
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
+    /**
+     *
+     * @returns {string}
+     */
     function getFileNameFromTitle () {
       const title = svgCanvas.getDocumentTitle();
       // We convert (to underscore) only those disallowed Win7 file name characters
       return title.trim().replace(/[/\\:*?"<>|]/g, '_');
     }
+    /**
+     * Escapes XML predefined entities for quoted attributes.
+     * @param {string} str
+     * @returns {string}
+     */
     function xhtmlEscape (str) {
       return str.replace(/&(?!amp;)/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;'); // < is actually disallowed above anyways
     }
+
+    /**
+     *
+     * @param {string} [filename='image']
+     * @param {string} suffix To add to file name
+     * @param {string} uri
+     * @returns {boolean}
+     */
     function clientDownloadSupport (filename, suffix, uri) {
       const support = $('<a>')[0].download === '';
       let a;
@@ -35,6 +50,7 @@ export default {
         a[0].click();
         return true;
       }
+      return false;
     }
     const
       saveSvgAction = svgEditor.curConfig.extPath + 'filesave.php',
@@ -101,7 +117,7 @@ export default {
         }
 
         if (note.length) {
-          alert(note);
+          await $.alert(note);
         }
 
         const filename = getFileNameFromTitle();
@@ -178,36 +194,45 @@ export default {
 
     // It appears necessary to rebuild this input every time a file is
     // selected so the same file can be picked and the change event can fire.
+
+    /**
+     *
+     * @param {external:jQuery} form
+     * @returns {undefined}
+     */
     function rebuildInput (form) {
       form.empty();
       const inp = $('<input type="file" name="svg_file">').appendTo(form);
 
-      function submit () {
-        // This submits the form, which returns the file data using svgEditor.processFile()
+      /**
+       * Submit the form, empty its contents for reuse and show
+       *   uploading message.
+       * @returns {undefined}
+       */
+      async function submit () {
+        // This submits the form, which returns the file data using `svgEditor.processFile()`
         form.submit();
 
         rebuildInput(form);
-        $.process_cancel(strings.uploading, function () {
-          cancelled = true;
-          $('#dialog_box').hide();
-        });
+        await $.process_cancel(strings.uploading);
+        cancelled = true;
+        $('#dialog_box').hide();
       }
 
       if (form[0] === openSvgForm[0]) {
-        inp.change(function () {
+        inp.change(async function () {
           // This takes care of the "are you sure" dialog box
-          svgEditor.openPrep(function (ok) {
-            if (!ok) {
-              rebuildInput(form);
-              return;
-            }
-            submit();
-          });
+          const ok = await svgEditor.openPrep();
+          if (!ok) {
+            rebuildInput(form);
+            return;
+          }
+          await submit();
         });
       } else {
-        inp.change(function () {
+        inp.change(async function () {
           // This submits the form, which returns the file data using svgEditor.processFile()
-          submit();
+          await submit();
         });
       }
     }
diff --git a/editor/extensions/ext-shapes.js b/editor/extensions/ext-shapes.js
index 3a01ad6e..f9405533 100644
--- a/editor/extensions/ext-shapes.js
+++ b/editor/extensions/ext-shapes.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-shapes.js
  *
@@ -9,10 +8,9 @@
  */
 export default {
   name: 'shapes',
-  async init ({importLocale}) {
+  async init ({$, importLocale}) {
     const strings = await importLocale();
     const svgEditor = this;
-    const $ = jQuery;
     const canv = svgEditor.canvas;
     const svgroot = canv.getRootElem();
     let lastBBox = {};
@@ -63,10 +61,26 @@ export default {
     let currentD, curShapeId, curShape, startX, startY;
     let curLib = library.basic;
 
+    /**
+    *
+    * @returns {undefined}
+    */
     function loadIcons () {
       $('#shape_buttons').empty().append(curLib.buttons);
     }
 
+    /**
+    * @typedef {PlainObject} module:Extension.Shapes.Shapes
+    * @property {PlainObject.<string, string>} data
+    * @property {Integer} [size]
+    * @property {boolean} [fill]
+    */
+
+    /**
+    * @param {string|"basic"} cat Category ID
+    * @param {module:Extension.Shapes.Shapes} shapes
+    * @returns {undefined}
+    */
     function makeButtons (cat, shapes) {
       const size = curLib.size || 300;
       const fill = curLib.fill || false;
@@ -78,7 +92,8 @@ export default {
           '<svg viewBox="' + vb + '">' +
             '<path fill="' + (fill ? '#333' : 'none') +
               '" stroke="#000" stroke-width="' + stroke + '" /></svg></svg>',
-        'text/xml');
+        'text/xml'
+      );
 
       const width = 24;
       const height = 24;
@@ -88,9 +103,7 @@ export default {
 
       const {data} = shapes;
 
-      curLib.buttons = [];
-      for (const id in data) {
-        const pathD = data[id];
+      curLib.buttons = Object.entries(data).map(([id, pathD]) => {
         const icon = svgElem.clone();
         icon.find('path').attr('d', pathD);
 
@@ -99,10 +112,14 @@ export default {
           title: id
         });
         // Store for later use
-        curLib.buttons.push(iconBtn[0]);
-      }
+        return iconBtn[0];
+      });
     }
 
+    /**
+    * @param {string|"basic"} catId
+    * @returns {undefined}
+    */
     function loadLibrary (catId) {
       const lib = library[catId];
 
@@ -141,33 +158,34 @@ export default {
         return Object.assign(buttons[i], button);
       }),
       callback () {
-        $('<style>').text(
-          '#shape_buttons {' +
-          'overflow: auto;' +
-          'width: 180px;' +
-          'max-height: 300px;' +
-          'display: table-cell;' +
-          'vertical-align: middle;' +
-        '}' +
-        '#shape_cats {' +
-          'min-width: 110px;' +
-          'display: table-cell;' +
-          'vertical-align: middle;' +
-          'height: 300px;' +
-        '}' +
-        '#shape_cats > div {' +
-          'line-height: 1em;' +
-          'padding: .5em;' +
-          'border:1px solid #B0B0B0;' +
-          'background: #E8E8E8;' +
-          'margin-bottom: -1px;' +
-        '}' +
-        '#shape_cats div:hover {' +
-          'background: #FFFFCC;' +
-        '}' +
-        '#shape_cats div.current {' +
-          'font-weight: bold;' +
-        '}').appendTo('head');
+        $('<style>').text(`
+          #shape_buttons {
+            overflow: auto;
+            width: 180px;
+            max-height: 300px;
+            display: table-cell;
+            vertical-align: middle;
+          }
+          #shape_cats {
+            min-width: 110px;
+            display: table-cell;
+            vertical-align: middle;
+            height: 300px;
+          }
+          #shape_cats > div {
+            line-height: 1em;
+            padding: .5em;
+            border:1px solid #B0B0B0;
+            background: #E8E8E8;
+            margin-bottom: -1px;
+          }
+          #shape_cats div:hover {
+            background: #FFFFCC;
+          }
+          #shape_cats div.current {
+            font-weight: bold;
+          }
+        `).appendTo('head');
 
         const btnDiv = $('<div id="shape_buttons">');
         $('#tools_shapelib > *').wrapAll(btnDiv);
@@ -229,14 +247,14 @@ export default {
         });
         // Now add shape categories from locale
         const cats = {};
-        for (const o in categories) {
-          cats['#shape_cats [data-cat="' + o + '"]'] = categories[o];
-        }
+        Object.entries(categories).forEach(([o, categoryName]) => {
+          cats['#shape_cats [data-cat="' + o + '"]'] = categoryName;
+        });
         this.setStrings('content', cats);
       },
       mouseDown (opts) {
         const mode = canv.getMode();
-        if (mode !== modeId) { return; }
+        if (mode !== modeId) { return undefined; }
 
         startX = opts.start_x;
         const x = startX;
@@ -259,7 +277,7 @@ export default {
         });
 
         // Make sure shape uses absolute values
-        if (/[a-z]/.test(currentD)) {
+        if ((/[a-z]/).test(currentD)) {
           currentD = curLib.data[curShapeId] = canv.pathActions.convertPath(curShape);
           curShape.setAttribute('d', currentD);
           canv.pathActions.fixEnd(curShape);
@@ -343,7 +361,7 @@ export default {
       },
       mouseUp (opts) {
         const mode = canv.getMode();
-        if (mode !== modeId) { return; }
+        if (mode !== modeId) { return undefined; }
 
         const keepObject = (opts.event.clientX !== startClientPos.x && opts.event.clientY !== startClientPos.y);
 
diff --git a/editor/extensions/ext-star.js b/editor/extensions/ext-star.js
index 86cced53..a5b9aeff 100644
--- a/editor/extensions/ext-star.js
+++ b/editor/extensions/ext-star.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-star.js
  *
@@ -10,10 +9,9 @@ export default {
   name: 'star',
   async init (S) {
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
 
-    const {importLocale} = S; // {svgcontent},
+    const {$, importLocale} = S; // {svgcontent},
     let
       selElems,
       // editingitex = false,
@@ -25,6 +23,12 @@ export default {
       // undoCommand = 'Not image',
       // modeChangeG, ccZoom, wEl, hEl, wOffset, hOffset, ccRgbEl, brushW, brushH;
     const strings = await importLocale();
+
+    /**
+     *
+     * @param {boolean} on
+     * @returns {undefined}
+     */
     function showPanel (on) {
       let fcRules = $('#fc_rules');
       if (!fcRules.length) {
@@ -40,6 +44,12 @@ export default {
     }
     */
 
+    /**
+     *
+     * @param {string} attr
+     * @param {string|Float} val
+     * @returns {undefined}
+     */
     function setAttr (attr, val) {
       svgCanvas.changeSelectedAttribute(attr, val);
       svgCanvas.call('changed', selElems);
@@ -140,10 +150,11 @@ export default {
             started: true
           };
         }
+        return undefined;
       },
       mouseMove (opts) {
         if (!started) {
-          return;
+          return undefined;
         }
         if (svgCanvas.getMode() === 'star') {
           const c = $(newFO).attr(['cx', 'cy', 'point', 'orient', 'fill', 'strokecolor', 'strokeWidth', 'radialshift']);
@@ -195,6 +206,7 @@ export default {
             started: true
           };
         }
+        return undefined;
       },
       mouseUp () {
         if (svgCanvas.getMode() === 'star') {
@@ -205,6 +217,7 @@ export default {
             element: newFO
           };
         }
+        return undefined;
       },
       selectedChanged (opts) {
         // Use this to update the current selected elements
diff --git a/editor/extensions/ext-storage.js b/editor/extensions/ext-storage.js
index 9490ef55..24b7ac1b 100644
--- a/editor/extensions/ext-storage.js
+++ b/editor/extensions/ext-storage.js
@@ -1,4 +1,3 @@
-/* globals jQuery */
 /**
  * ext-storage.js
  *
@@ -23,9 +22,8 @@
 */
 export default {
   name: 'storage',
-  init () {
+  init ({$}) {
     const svgEditor = this;
-    const $ = jQuery;
     const svgCanvas = svgEditor.canvas;
 
     // We could empty any already-set data for users when they decline storage,
@@ -49,6 +47,11 @@ export default {
     } = svgEditor.curConfig;
     const {storage, updateCanvas} = svgEditor;
 
+    /**
+     * Replace `storagePrompt` parameter within URL.
+     * @param {string} val
+     * @returns {undefined}
+     */
     function replaceStoragePrompt (val) {
       val = val ? 'storagePrompt=' + val : '';
       const loc = top.location; // Allow this to work with the embedded editor as well
@@ -60,6 +63,13 @@ export default {
         loc.href += (loc.href.includes('?') ? '&' : '?') + val;
       }
     }
+
+    /**
+     * Sets SVG content as a string with "svgedit-" and the current
+     *   canvas name as namespace.
+     * @param {string} val
+     * @returns {undefined}
+     */
     function setSVGContentStorage (val) {
       if (storage) {
         const name = 'svgedit-' + svgEditor.curConfig.canvasName;
@@ -71,25 +81,36 @@ export default {
       }
     }
 
+    /**
+     * Set the cookie to expire.
+     * @param {string} cookie
+     * @returns {undefined}
+     */
     function expireCookie (cookie) {
       document.cookie = encodeURIComponent(cookie) + '=; expires=Thu, 01 Jan 1970 00:00:00 GMT';
     }
 
+    /**
+     * Expire the storage cookie.
+     * @returns {undefined}
+     */
     function removeStoragePrefCookie () {
-      expireCookie('store');
+      expireCookie('svgeditstore');
     }
 
+    /**
+     * Empties storage for each of the current preferences.
+     * @returns {undefined}
+     */
     function emptyStorage () {
       setSVGContentStorage('');
-      for (let name in svgEditor.curPrefs) {
-        if (svgEditor.curPrefs.hasOwnProperty(name)) {
-          name = 'svg-edit-' + name;
-          if (storage) {
-            storage.removeItem(name);
-          }
-          expireCookie(name);
+      Object.keys(svgEditor.curPrefs).forEach((name) => {
+        name = 'svg-edit-' + name;
+        if (storage) {
+          storage.removeItem(name);
         }
-      }
+        expireCookie(name);
+      });
     }
 
     // emptyStorage();
@@ -106,10 +127,10 @@ export default {
     function setupBeforeUnloadListener () {
       window.addEventListener('beforeunload', function (e) {
         // Don't save anything unless the user opted in to storage
-        if (!document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/)) {
+        if (!document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/)) {
           return;
         }
-        if (document.cookie.match(/(?:^|;\s*)store=prefsAndContent/)) {
+        if (document.cookie.match(/(?:^|;\s*)svgeditstore=prefsAndContent/)) {
           setSVGContentStorage(svgCanvas.getSvgString());
         }
 
@@ -118,24 +139,21 @@ export default {
 
         const {curPrefs} = svgEditor;
 
-        for (let key in curPrefs) {
-          if (curPrefs.hasOwnProperty(key)) { // It's our own config, so we don't need to iterate up the prototype chain
-            let val = curPrefs[key];
-            const store = (val !== undefined);
-            key = 'svg-edit-' + key;
-            if (!store) {
-              continue;
-            }
-            if (storage) {
-              storage.setItem(key, val);
-            } else if (window.widget) {
-              window.widget.setPreferenceForKey(val, key);
-            } else {
-              val = encodeURIComponent(val);
-              document.cookie = encodeURIComponent(key) + '=' + val + '; expires=Fri, 31 Dec 9999 23:59:59 GMT';
-            }
+        Object.entries(curPrefs).forEach(([key, val]) => {
+          const store = (val !== undefined);
+          key = 'svg-edit-' + key;
+          if (!store) {
+            return;
           }
-        }
+          if (storage) {
+            storage.setItem(key, val);
+          } else if (window.widget) {
+            window.widget.setPreferenceForKey(val, key);
+          } else {
+            val = encodeURIComponent(val);
+            document.cookie = encodeURIComponent(key) + '=' + val + '; expires=Fri, 31 Dec 9999 23:59:59 GMT';
+          }
+        });
       });
     }
 
@@ -175,7 +193,7 @@ export default {
             // continual prompts about it)...
             storagePrompt !== false &&
             // ...and this user hasn't previously indicated a desire for storage
-            !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/)
+            !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/)
           )
           // ...then show the storage prompt.
         )) {
@@ -205,60 +223,10 @@ export default {
 
           // Open select-with-checkbox dialog
           // From svg-editor.js
-          $.select(
+          svgEditor.storagePromptState = 'waiting';
+          const {response: pref, checked} = await $.select(
             message,
             options,
-            function (pref, checked) {
-              if (pref && pref !== 'noPrefsOrContent') {
-                // Regardless of whether the user opted
-                // to remember the choice (and move to a URL which won't
-                // ask them again), we have to assume the user
-                // doesn't even want to remember their not wanting
-                // storage, so we don't set the cookie or continue on with
-                //  setting storage on beforeunload
-                document.cookie = 'store=' + encodeURIComponent(pref) + '; expires=Fri, 31 Dec 9999 23:59:59 GMT'; // 'prefsAndContent' | 'prefsOnly'
-                // If the URL was configured to always insist on a prompt, if
-                //    the user does indicate a wish to store their info, we
-                //    don't want ask them again upon page refresh so move
-                //    them instead to a URL which does not always prompt
-                if (storagePrompt === true && checked) {
-                  replaceStoragePrompt();
-                  return;
-                }
-              } else { // The user does not wish storage (or cancelled, which we treat equivalently)
-                removeStoragePrefCookie();
-                if (pref && // If the user explicitly expresses wish for no storage
-                  emptyStorageOnDecline
-                ) {
-                  emptyStorage();
-                }
-                if (pref && checked) {
-                  // Open a URL which won't set storage and won't prompt user about storage
-                  replaceStoragePrompt('false');
-                  return;
-                }
-              }
-
-              // Reset width/height of dialog (e.g., for use by Export)
-              $('#dialog_container')[0].style.width = oldContainerWidth;
-              $('#dialog_container')[0].style.marginLeft = oldContainerMarginLeft;
-              $('#dialog_content')[0].style.height = oldContentHeight;
-              $('#dialog_container')[0].style.height = oldContainerHeight;
-
-              // It should be enough to (conditionally) add to storage on
-              //   beforeunload, but if we wished to update immediately,
-              //   we might wish to try setting:
-              //       svgEditor.setConfig({noStorageOnLoad: true});
-              //   and then call:
-              //       svgEditor.loadContentAndPrefs();
-
-              // We don't check for noStorageOnLoad here because
-              //   the prompt gives the user the option to store data
-              setupBeforeUnloadListener();
-
-              svgEditor.storagePromptState = 'closed';
-              updateCanvas(true);
-            },
             null,
             null,
             {
@@ -267,7 +235,55 @@ export default {
               tooltip: rememberTooltip
             }
           );
-          svgEditor.storagePromptState = 'waiting';
+          if (pref && pref !== 'noPrefsOrContent') {
+            // Regardless of whether the user opted
+            // to remember the choice (and move to a URL which won't
+            // ask them again), we have to assume the user
+            // doesn't even want to remember their not wanting
+            // storage, so we don't set the cookie or continue on with
+            //  setting storage on beforeunload
+            document.cookie = 'svgeditstore=' + encodeURIComponent(pref) + '; expires=Fri, 31 Dec 9999 23:59:59 GMT'; // 'prefsAndContent' | 'prefsOnly'
+            // If the URL was configured to always insist on a prompt, if
+            //    the user does indicate a wish to store their info, we
+            //    don't want ask them again upon page refresh so move
+            //    them instead to a URL which does not always prompt
+            if (storagePrompt === true && checked) {
+              replaceStoragePrompt();
+              return;
+            }
+          } else { // The user does not wish storage (or cancelled, which we treat equivalently)
+            removeStoragePrefCookie();
+            if (pref && // If the user explicitly expresses wish for no storage
+              emptyStorageOnDecline
+            ) {
+              emptyStorage();
+            }
+            if (pref && checked) {
+              // Open a URL which won't set storage and won't prompt user about storage
+              replaceStoragePrompt('false');
+              return;
+            }
+          }
+
+          // Reset width/height of dialog (e.g., for use by Export)
+          $('#dialog_container')[0].style.width = oldContainerWidth;
+          $('#dialog_container')[0].style.marginLeft = oldContainerMarginLeft;
+          $('#dialog_content')[0].style.height = oldContentHeight;
+          $('#dialog_container')[0].style.height = oldContainerHeight;
+
+          // It should be enough to (conditionally) add to storage on
+          //   beforeunload, but if we wished to update immediately,
+          //   we might wish to try setting:
+          //       svgEditor.setConfig({noStorageOnLoad: true});
+          //   and then call:
+          //       svgEditor.loadContentAndPrefs();
+
+          // We don't check for noStorageOnLoad here because
+          //   the prompt gives the user the option to store data
+          setupBeforeUnloadListener();
+
+          svgEditor.storagePromptState = 'closed';
+          updateCanvas(true);
         } else if (!noStorageOnLoad || forceStorage) {
           setupBeforeUnloadListener();
         }
diff --git a/editor/extensions/ext-webappfind.js b/editor/extensions/ext-webappfind.js
index e478caec..953c334e 100644
--- a/editor/extensions/ext-webappfind.js
+++ b/editor/extensions/ext-webappfind.js
@@ -7,7 +7,7 @@
 
 export default {
   name: 'webappfind',
-  async init ({importLocale}) {
+  async init ({importLocale, $}) {
     const strings = await importLocale();
     const svgEditor = this;
     const saveMessage = 'save',
@@ -48,7 +48,7 @@ export default {
           } */
           break;
         case 'save-end':
-          alert(`save complete for pathID ${pathID}!`);
+          $.alert(`save complete for pathID ${pathID}!`);
           break;
         default:
           throw new Error('Unexpected WebAppFind event type');
diff --git a/editor/extensions/ext-xdomain-messaging.js b/editor/extensions/ext-xdomain-messaging.js
index f58480d8..527d5a61 100644
--- a/editor/extensions/ext-xdomain-messaging.js
+++ b/editor/extensions/ext-xdomain-messaging.js
@@ -23,7 +23,7 @@ export default {
         //  to configure
         const {allowedOrigins} = svgEditor.curConfig;
         if (!allowedOrigins.includes('*') && !allowedOrigins.includes(e.origin)) {
-          console.log(`Origin ${e.origin} not whitelisted for posting to ${window.origin}`);
+          console.log(`Origin ${e.origin} not whitelisted for posting to ${window.origin}`); // eslint-disable-line no-console
           return;
         }
         const cbid = data.id;
@@ -42,7 +42,7 @@ export default {
         e.source.postMessage(JSON.stringify(message), '*');
       });
     } catch (err) {
-      console.log('Error with xdomain message listener: ' + err);
+      console.log('Error with xdomain message listener: ' + err); // eslint-disable-line no-console
     }
   }
 };
diff --git a/editor/extensions/imagelib/index.js b/editor/extensions/imagelib/index.js
index 92ba4ed8..b3487e26 100644
--- a/editor/extensions/imagelib/index.js
+++ b/editor/extensions/imagelib/index.js
@@ -32,7 +32,8 @@ $('a').click(function () {
         data = canvas.toDataURL();
       } catch (err) {
         // This fails in Firefox with `file:///` URLs :(
-        alert('Data URL conversion failed: ' + err);
+        // Todo: This could use a generic alert library instead
+        alert('Data URL conversion failed: ' + err); // eslint-disable-line no-alert
         data = '';
       }
       post({href, data});
diff --git a/editor/extensions/imagelib/openclipart.js b/editor/extensions/imagelib/openclipart.js
index 6772d0e6..a00cf18a 100644
--- a/editor/extensions/imagelib/openclipart.js
+++ b/editor/extensions/imagelib/openclipart.js
@@ -6,6 +6,8 @@ manipulation($, jml);
 
 const baseAPIURL = 'https://openclipart.org/search/json/';
 
+const jsVoid = 'javascript: void(0);'; // eslint-disable-line no-script-url
+
 /**
  * Shows results after query submission.
  * @param {string} url
@@ -18,7 +20,7 @@ async function processResults (url) {
    */
   function queryLink (query) {
     return ['a', {
-      href: 'javascript: void(0);',
+      href: jsVoid,
       dataset: {value: query},
       $on: {click (e) {
         e.preventDefault();
@@ -34,7 +36,8 @@ async function processResults (url) {
   // console.log('json', json);
 
   if (!json || json.msg !== 'success') {
-    alert('There was a problem downloading the results');
+    // Todo: This could use a generic alert library instead
+    alert('There was a problem downloading the results'); // eslint-disable-line no-alert
     return;
   }
   const {payload, info: {
@@ -82,8 +85,8 @@ async function processResults (url) {
         ['button', {style: 'margin-right: 8px; border: 2px solid black;', dataset: {id, value: svgURL}, $on: {
           async click (e) {
             e.preventDefault();
-            const {value: svgURL, id} = this.dataset;
-            // console.log('this', id, svgURL);
+            const {value: svgurl} = this.dataset;
+            // console.log('this', id, svgurl);
             const post = (message) => {
               // Todo: Make origin customizable as set by opening window
               // Todo: If dropping IE9, avoid stringifying
@@ -95,13 +98,13 @@ async function processResults (url) {
             // Send metadata (also indicates file is about to be sent)
             post({
               name: title,
-              id: svgURL
+              id: svgurl
             });
-            const result = await fetch(svgURL);
+            const result = await fetch(svgurl);
             const svg = await result.text();
-            // console.log('url and svg', svgURL, svg);
+            // console.log('url and svg', svgurl, svg);
             post({
-              href: svgURL,
+              href: svgurl,
               data: svg
             });
           }
@@ -117,7 +120,7 @@ async function processResults (url) {
         ['span', [
           '(ID: ',
           ['a', {
-            href: 'javascript: void(0);',
+            href: jsVoid,
             dataset: {value: id},
             $on: {
               click (e) {
@@ -172,7 +175,7 @@ async function processResults (url) {
       ? ''
       : ['span', [
         ['a', {
-          href: 'javascript: void(0);',
+          href: jsVoid,
           $on: {
             click (e) {
               e.preventDefault();
@@ -188,7 +191,7 @@ async function processResults (url) {
       ? ''
       : ['span', [
         ['a', {
-          href: 'javascript: void(0);',
+          href: jsVoid,
           $on: {
             click (e) {
               e.preventDefault();
@@ -204,7 +207,7 @@ async function processResults (url) {
       ? ''
       : ['span', [
         ['a', {
-          href: 'javascript: void(0);',
+          href: jsVoid,
           $on: {
             click (e) {
               e.preventDefault();
@@ -220,7 +223,7 @@ async function processResults (url) {
       ? ''
       : ['span', [
         ['a', {
-          href: 'javascript: void(0);',
+          href: jsVoid,
           $on: {
             click (e) {
               e.preventDefault();
diff --git a/editor/external/dom-polyfill/dom-polyfill.js b/editor/external/dom-polyfill/dom-polyfill.js
index f658d276..98a36306 100644
--- a/editor/external/dom-polyfill/dom-polyfill.js
+++ b/editor/external/dom-polyfill/dom-polyfill.js
@@ -1,5 +1,15 @@
 // From https://github.com/inexorabletash/polyfill/blob/master/dom.js
 
+/**
+ * @module DOMPolyfill
+ */
+
+/**
+ *
+ * @param {Node} o
+ * @param {module:DOMPolyfill~ParentNode|module:DOMPolyfill~ChildNode} ps
+ * @returns {undefined}
+ */
 function mixin (o, ps) {
   if (!o) return;
   Object.keys(ps).forEach((p) => {
@@ -17,6 +27,11 @@ function mixin (o, ps) {
   });
 }
 
+/**
+ *
+ * @param {Node[]} nodes
+ * @returns {Node}
+ */
 function convertNodesIntoANode (nodes) {
   nodes = nodes.map((node) => {
     return !(node instanceof Node) ? document.createTextNode(node) : node;
diff --git a/editor/external/dynamic-import-polyfill/importModule.js b/editor/external/dynamic-import-polyfill/importModule.js
index 5f6545a3..95a04add 100644
--- a/editor/external/dynamic-import-polyfill/importModule.js
+++ b/editor/external/dynamic-import-polyfill/importModule.js
@@ -52,7 +52,7 @@ export function importSetGlobalDefault (url, config) {
 * @returns {Promise} The promise resolves to either an `ArbitraryModule` or
 *   any other value depends on the export of the targeted module.
 */
-export async function importSetGlobal (url, {global, returnDefault}) {
+export async function importSetGlobal (url, {global: glob, returnDefault}) {
   // Todo: Replace calls to this function with `import()` when supported
   const modularVersion = !('svgEditor' in window) ||
     !window.svgEditor ||
@@ -61,13 +61,13 @@ export async function importSetGlobal (url, {global, returnDefault}) {
     return importModule(url, undefined, {returnDefault});
   }
   await importScript(url);
-  return window[global];
+  return window[glob];
 }
 /**
  *
  * @author Brett Zamir (other items are from `dynamic-import-polyfill`)
  * @param {string|string[]} url
- * @param {Object} [atts={}]
+ * @param {PlainObject} [atts={}]
  * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a
  *   script loading error
  */
@@ -104,7 +104,7 @@ export function importScript (url, atts = {}) {
 /**
  *
  * @param {string|string[]} url
- * @param {Object} [atts={}]
+ * @param {PlainObject} [atts={}]
  * @param {PlainObject} opts
  * @param {boolean} [opts.returnDefault=false} = {}]
  * @returns {Promise} Resolves to value of loading module or rejects with
diff --git a/editor/history.js b/editor/history.js
index c53fb227..a135076d 100644
--- a/editor/history.js
+++ b/editor/history.js
@@ -114,7 +114,7 @@ export class MoveElementCommand extends Command {
     this.newNextSibling = elem.nextSibling;
     this.newParent = elem.parentNode;
   }
-  type () {
+  type () { // eslint-disable-line class-methods-use-this
     return 'svgedit.history.MoveElementCommand';
   }
 
@@ -180,7 +180,7 @@ export class InsertElementCommand extends Command {
     this.nextSibling = this.elem.nextSibling;
   }
 
-  type () {
+  type () { // eslint-disable-line class-methods-use-this
     return 'svgedit.history.InsertElementCommand';
   }
 
@@ -249,7 +249,7 @@ export class RemoveElementCommand extends Command {
     // special hack for webkit: remove this element's entry in the svgTransformLists map
     removeElementFromListMap(elem);
   }
-  type () {
+  type () { // eslint-disable-line class-methods-use-this
     return 'svgedit.history.RemoveElementCommand';
   }
 
@@ -338,7 +338,7 @@ export class ChangeElementCommand extends Command {
       }
     }
   }
-  type () {
+  type () { // eslint-disable-line class-methods-use-this
     return 'svgedit.history.ChangeElementCommand';
   }
 
@@ -354,26 +354,24 @@ export class ChangeElementCommand extends Command {
     }
 
     let bChangedTransform = false;
-    for (const attr in this.newValues) {
-      if (this.newValues[attr]) {
+    Object.entries(this.newValues).forEach(([attr, value]) => {
+      if (value) {
         if (attr === '#text') {
-          this.elem.textContent = this.newValues[attr];
+          this.elem.textContent = value;
         } else if (attr === '#href') {
-          setHref(this.elem, this.newValues[attr]);
+          setHref(this.elem, value);
         } else {
-          this.elem.setAttribute(attr, this.newValues[attr]);
+          this.elem.setAttribute(attr, value);
         }
+      } else if (attr === '#text') {
+        this.elem.textContent = '';
       } else {
-        if (attr === '#text') {
-          this.elem.textContent = '';
-        } else {
-          this.elem.setAttribute(attr, '');
-          this.elem.removeAttribute(attr);
-        }
+        this.elem.setAttribute(attr, '');
+        this.elem.removeAttribute(attr);
       }
 
       if (attr === 'transform') { bChangedTransform = true; }
-    }
+    });
 
     // relocate rotational transform, if necessary
     if (!bChangedTransform) {
@@ -408,24 +406,22 @@ export class ChangeElementCommand extends Command {
     }
 
     let bChangedTransform = false;
-    for (const attr in this.oldValues) {
-      if (this.oldValues[attr]) {
+    Object.entries(this.oldValues).forEach(([attr, value]) => {
+      if (value) {
         if (attr === '#text') {
-          this.elem.textContent = this.oldValues[attr];
+          this.elem.textContent = value;
         } else if (attr === '#href') {
-          setHref(this.elem, this.oldValues[attr]);
+          setHref(this.elem, value);
         } else {
-          this.elem.setAttribute(attr, this.oldValues[attr]);
+          this.elem.setAttribute(attr, value);
         }
+      } else if (attr === '#text') {
+        this.elem.textContent = '';
       } else {
-        if (attr === '#text') {
-          this.elem.textContent = '';
-        } else {
-          this.elem.removeAttribute(attr);
-        }
+        this.elem.removeAttribute(attr);
       }
       if (attr === 'transform') { bChangedTransform = true; }
-    }
+    });
     // relocate rotational transform, if necessary
     if (!bChangedTransform) {
       const angle = getRotationAngle(this.elem);
@@ -477,7 +473,7 @@ export class BatchCommand extends Command {
     this.stack = [];
   }
 
-  type () {
+  type () { // eslint-disable-line class-methods-use-this
     return 'svgedit.history.BatchCommand';
   }
 
diff --git a/editor/images/angle.png b/editor/images/angle.png
index 1373faf1..e054a678 100644
Binary files a/editor/images/angle.png and b/editor/images/angle.png differ
diff --git a/editor/images/bold.png b/editor/images/bold.png
index 705b08cb..a1ce11df 100644
Binary files a/editor/images/bold.png and b/editor/images/bold.png differ
diff --git a/editor/images/c_radius.png b/editor/images/c_radius.png
index 5acbf5ce..f0f3a522 100644
Binary files a/editor/images/c_radius.png and b/editor/images/c_radius.png differ
diff --git a/editor/images/fill.png b/editor/images/fill.png
index f1394b85..c785879d 100644
Binary files a/editor/images/fill.png and b/editor/images/fill.png differ
diff --git a/editor/images/fontsize.png b/editor/images/fontsize.png
index 39159ae0..944e107f 100644
Binary files a/editor/images/fontsize.png and b/editor/images/fontsize.png differ
diff --git a/editor/images/italic.png b/editor/images/italic.png
index f2c47be5..8e6d76e1 100644
Binary files a/editor/images/italic.png and b/editor/images/italic.png differ
diff --git a/editor/images/select.png b/editor/images/select.png
index 0182b992..21f96d1b 100644
Binary files a/editor/images/select.png and b/editor/images/select.png differ
diff --git a/editor/images/sep.png b/editor/images/sep.png
index d4307e3c..5485bc48 100644
Binary files a/editor/images/sep.png and b/editor/images/sep.png differ
diff --git a/editor/images/wireframe.png b/editor/images/wireframe.png
index 6feb9574..8ac3c85b 100644
Binary files a/editor/images/wireframe.png and b/editor/images/wireframe.png differ
diff --git a/editor/jgraduate/images/map-opacity.png b/editor/jgraduate/images/map-opacity.png
index 3a7b71cc..1406ac6c 100644
Binary files a/editor/jgraduate/images/map-opacity.png and b/editor/jgraduate/images/map-opacity.png differ
diff --git a/editor/jgraduate/images/mappoint_c.png b/editor/jgraduate/images/mappoint_c.png
index 573af4a4..d0699436 100644
Binary files a/editor/jgraduate/images/mappoint_c.png and b/editor/jgraduate/images/mappoint_c.png differ
diff --git a/editor/jgraduate/images/mappoint_f.png b/editor/jgraduate/images/mappoint_f.png
index e0e880e5..36580e6e 100644
Binary files a/editor/jgraduate/images/mappoint_f.png and b/editor/jgraduate/images/mappoint_f.png differ
diff --git a/editor/jgraduate/jQuery.jGraduate.js b/editor/jgraduate/jQuery.jGraduate.js
index fa576aac..73ea7f43 100644
--- a/editor/jgraduate/jQuery.jGraduate.js
+++ b/editor/jgraduate/jQuery.jGraduate.js
@@ -36,8 +36,8 @@ const ns = {
 
 if (!window.console) {
   window.console = {
-    log (str) {},
-    dir (str) {}
+    log (str) { /* */ },
+    dir (str) { /* */ }
   };
 }
 
@@ -49,7 +49,7 @@ if (!window.console) {
 * @param {external:jQuery} $ The jQuery instance to wrap
 * @returns {external:jQuery}
 */
-export default function ($) {
+export default function jQueryPluginJGraduate ($) {
   if (!$.loadingStylesheets) {
     $.loadingStylesheets = [];
   }
@@ -199,21 +199,37 @@ export default function ($) {
 
   const isGecko = navigator.userAgent.includes('Gecko/');
 
+  /**
+  * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs
+  */
+  /**
+  * @param {SVGElement} elem
+  * @param {module:jGraduate.Attrs} attrs
+  * @returns {undefined}
+  */
   function setAttrs (elem, attrs) {
     if (isGecko) {
-      for (const aname in attrs) elem.setAttribute(aname, attrs[aname]);
+      Object.entries(attrs).forEach(([aname, val]) => {
+        elem.setAttribute(aname, val);
+      });
     } else {
-      for (const aname in attrs) {
-        const val = attrs[aname], prop = elem[aname];
+      Object.entries(attrs).forEach(([aname, val]) => {
+        const prop = elem[aname];
         if (prop && prop.constructor === 'SVGLength') {
           prop.baseVal.value = val;
         } else {
           elem.setAttribute(aname, val);
         }
-      }
+      });
     }
   }
 
+  /**
+  * @param {string} name
+  * @param {module:jGraduate.Attrs} attrs
+  * @param {Element} newparent
+  * @returns {SVGElement}
+  */
   function mkElem (name, attrs, newparent) {
     const elem = document.createElementNS(ns.svg, name);
     setAttrs(elem, attrs);
@@ -263,7 +279,7 @@ export default function ($) {
         idref = '#' + $this.attr('id') + ' ';
 
       if (!idref) {
-        alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
+        /* await */ $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
         return;
       }
 
@@ -485,7 +501,7 @@ export default function ($) {
             mkStop(1, '#' + color, 1);
             break;
 
-          case 'inverse':
+          case 'inverse': {
             // Invert current color for second stop
             let inverted = '';
             for (let i = 0; i < 6; i += 2) {
@@ -496,8 +512,7 @@ export default function ($) {
             }
             mkStop(1, '#' + inverted, 1);
             break;
-
-          case 'white':
+          } case 'white':
             mkStop(1, '#ffffff', 1);
             break;
 
@@ -615,10 +630,23 @@ export default function ($) {
           }).change();
       });
 
-      function mkStop (n, color, opac, sel, stopElem) {
-        const stop = stopElem || mkElem('stop', {'stop-color': color, 'stop-opacity': opac, offset: n}, curGradient);
+      /**
+       *
+       * @param {Float} n
+       * @param {Float|string} colr
+       * @param {Float} opac
+       * @param {boolean} [sel]
+       * @param {SVGStopElement} [stopElem]
+       * @returns {SVGStopElement}
+       */
+      function mkStop (n, colr, opac, sel, stopElem) {
+        const stop = stopElem || mkElem('stop', {
+          'stop-color': colr,
+          'stop-opacity': opac,
+          offset: n
+        }, curGradient);
         if (stopElem) {
-          color = stopElem.getAttribute('stop-color');
+          colr = stopElem.getAttribute('stop-color');
           opac = stopElem.getAttribute('stop-opacity');
           n = stopElem.getAttribute('offset');
         } else {
@@ -636,7 +664,7 @@ export default function ($) {
 
         const path = mkElem('path', {
           d: pickerD,
-          fill: color,
+          fill: colr,
           'fill-opacity': opac,
           transform: 'translate(' + (10 + n * MAX) + ', 26)',
           stroke: '#000',
@@ -652,19 +680,19 @@ export default function ($) {
           return false;
         }).data('stop', stop).data('bg', pathbg).dblclick(function () {
           $('div.jGraduate_LightBox').show();
-          const colorhandle = this;
-          let stopOpacity = +stop.getAttribute('stop-opacity') || 1;
+          const colorhandle = this; // eslint-disable-line consistent-this
+          let stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;
           let stopColor = stop.getAttribute('stop-color') || 1;
           let thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);
           while (thisAlpha.length < 2) { thisAlpha = '0' + thisAlpha; }
-          color = stopColor.substr(1) + thisAlpha;
+          colr = stopColor.substr(1) + thisAlpha;
           $('#' + id + '_jGraduate_stopPicker').css({left: 100, bottom: 15}).jPicker({
             window: {title: 'Pick the start color and opacity for the gradient'},
             images: {clientPath: $settings.images.clientPath},
-            color: {active: color, alphaSupport: true}
-          }, function (color, arg2) {
-            stopColor = color.val('hex') ? ('#' + color.val('hex')) : 'none';
-            stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;
+            color: {active: colr, alphaSupport: true}
+          }, function (clr, arg2) {
+            stopColor = clr.val('hex') ? ('#' + clr.val('hex')) : 'none';
+            stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;
             colorhandle.setAttribute('fill', stopColor);
             colorhandle.setAttribute('fill-opacity', stopOpacity);
             stop.setAttribute('stop-color', stopColor);
@@ -679,8 +707,8 @@ export default function ($) {
 
         $(curGradient).find('stop').each(function () {
           const curS = $(this);
-          if (+this.getAttribute('offset') > n) {
-            if (!color) {
+          if (Number(this.getAttribute('offset')) > n) {
+            if (!colr) {
               const newcolor = this.getAttribute('stop-color');
               const newopac = this.getAttribute('stop-opacity');
               stop.setAttribute('stop-color', newcolor);
@@ -691,11 +719,16 @@ export default function ($) {
             curS.before(stop);
             return false;
           }
+          return true;
         });
         if (sel) selectStop(path);
         return stop;
       }
 
+      /**
+      *
+      * @returns {undefined}
+      */
       function remStop () {
         delStop.setAttribute('display', 'none');
         const path = $(curStop);
@@ -716,6 +749,10 @@ export default function ($) {
         display: 'none'
       }, undefined); // stopMakerSVG);
 
+      /**
+      * @param {Element} item
+      * @returns {undefined}
+      */
       function selectStop (item) {
         if (curStop) curStop.setAttribute('stroke', '#000');
         item.setAttribute('stroke', 'blue');
@@ -728,6 +765,10 @@ export default function ($) {
 
       let stopOffset;
 
+      /**
+      *
+      * @returns {undefined}
+      */
       function remDrags () {
         $win.unbind('mousemove', dragColor);
         if (delStop.getAttribute('display') !== 'none') {
@@ -740,6 +781,10 @@ export default function ($) {
 
       let cX = cx;
       let cY = cy;
+      /**
+      *
+      * @returns {undefined}
+      */
       function xform () {
         const rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';
         if (scaleX === 1 && scaleY === 1) {
@@ -753,6 +798,10 @@ export default function ($) {
         }
       }
 
+      /**
+      * @param {Event} evt
+      * @returns {undefined}
+      */
       function dragColor (evt) {
         let x = evt.pageX - stopOffset.left;
         const y = evt.pageY - stopOffset.top;
@@ -857,26 +906,26 @@ export default function ($) {
         const fracy = y / SIZEY;
 
         const type = draggingCoord.data('coord');
-        const grad = curGradient;
+        const grd = curGradient;
 
         switch (type) {
         case 'start':
           attrInput.x1.val(fracx);
           attrInput.y1.val(fracy);
-          grad.setAttribute('x1', fracx);
-          grad.setAttribute('y1', fracy);
+          grd.setAttribute('x1', fracx);
+          grd.setAttribute('y1', fracy);
           break;
         case 'end':
           attrInput.x2.val(fracx);
           attrInput.y2.val(fracy);
-          grad.setAttribute('x2', fracx);
-          grad.setAttribute('y2', fracy);
+          grd.setAttribute('x2', fracx);
+          grd.setAttribute('y2', fracy);
           break;
         case 'center':
           attrInput.cx.val(fracx);
           attrInput.cy.val(fracy);
-          grad.setAttribute('cx', fracx);
-          grad.setAttribute('cy', fracy);
+          grd.setAttribute('cx', fracx);
+          grd.setAttribute('cy', fracy);
           cX = fracx;
           cY = fracy;
           xform();
@@ -884,8 +933,8 @@ export default function ($) {
         case 'focus':
           attrInput.fx.val(fracx);
           attrInput.fy.val(fracy);
-          grad.setAttribute('fx', fracx);
-          grad.setAttribute('fy', fracy);
+          grd.setAttribute('fx', fracx);
+          grd.setAttribute('fy', fracy);
           xform();
         }
 
@@ -963,19 +1012,19 @@ export default function ($) {
         focusCoord.toggle(showFocus);
         attrInput.fx.val('');
         attrInput.fy.val('');
-        const grad = curGradient;
+        const grd = curGradient;
         if (!showFocus) {
-          lastfx = grad.getAttribute('fx');
-          lastfy = grad.getAttribute('fy');
-          grad.removeAttribute('fx');
-          grad.removeAttribute('fy');
+          lastfx = grd.getAttribute('fx');
+          lastfy = grd.getAttribute('fy');
+          grd.removeAttribute('fx');
+          grd.removeAttribute('fy');
         } else {
-          const fx = lastfx || 0.5;
-          const fy = lastfy || 0.5;
-          grad.setAttribute('fx', fx);
-          grad.setAttribute('fy', fy);
-          attrInput.fx.val(fx);
-          attrInput.fy.val(fy);
+          const fX = lastfx || 0.5;
+          const fY = lastfy || 0.5;
+          grd.setAttribute('fx', fX);
+          grd.setAttribute('fy', fY);
+          attrInput.fx.val(fX);
+          attrInput.fy.val(fY);
         }
       });
 
@@ -993,9 +1042,9 @@ export default function ($) {
       let slider;
 
       const setSlider = function (e) {
-        const {offset} = slider;
+        const {offset: {left}} = slider;
         const div = slider.parent;
-        let x = (e.pageX - offset.left - parseInt(div.css('border-left-width')));
+        let x = (e.pageX - left - parseInt(div.css('border-left-width')));
         if (x > SLIDERW) x = SLIDERW;
         if (x <= 0) x = 0;
         const posx = x - 5;
@@ -1030,7 +1079,7 @@ export default function ($) {
           }
           break;
         case 'angle':
-          x = x - 0.5;
+          x -= 0.5;
           angle = x *= 180;
           xform();
           x /= 100;
@@ -1117,7 +1166,7 @@ export default function ($) {
 
         $(data.input).val(data.val).change(function () {
           const isRad = curType === 'radialGradient';
-          let val = +this.value;
+          let val = Number(this.value);
           let xpos = 0;
           switch (type) {
           case 'radius':
@@ -1195,10 +1244,10 @@ export default function ($) {
           images: {clientPath: $settings.images.clientPath},
           color: {active: color, alphaSupport: true}
         },
-        function (color) {
+        function (clr) {
           $this.paint.type = 'solidColor';
-          $this.paint.alpha = color.val('ahex') ? Math.round((color.val('a') / 255) * 100) : 100;
-          $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';
+          $this.paint.alpha = clr.val('ahex') ? Math.round((clr.val('a') / 255) * 100) : 100;
+          $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';
           $this.paint.radialGradient = null;
           okClicked();
         },
diff --git a/editor/jgraduate/jQuery.jPicker.js b/editor/jgraduate/jQuery.jPicker.js
index 527b4378..38e87647 100755
--- a/editor/jgraduate/jQuery.jPicker.js
+++ b/editor/jgraduate/jQuery.jPicker.js
@@ -70,6 +70,7 @@ const jPicker = function ($) {
   /**
   * Encapsulate slider functionality for the ColorMap and ColorBar -
   * could be useful to use a jQuery UI draggable for this with certain extensions.
+  * @memberof module:jPicker
   * @param {external:jQuery} bar
   * @param {module:jPicker.SliderOptions} options
   * @returns {undefined}
@@ -130,7 +131,12 @@ const jPicker = function ($) {
         e.preventDefault();
         return false;
       }
-      // calculate mouse position and set value within the current range
+
+      /**
+       * Calculate mouse position and set value within the current range.
+       * @param {Event} e
+       * @returns {undefined}
+       */
       function setValuesFromMousePosition (e) {
         const barW = bar.w, // local copies for YUI compressor
           barH = bar.h;
@@ -141,8 +147,15 @@ const jPicker = function ($) {
         else if (locX > barW) locX = barW;
         if (locY < 0) locY = 0;
         else if (locY > barH) locY = barH;
-        val.call(that, 'xy', {x: ((locX / barW) * rangeX) + minX, y: ((locY / barH) * rangeY) + minY});
+        val.call(that, 'xy', {
+          x: ((locX / barW) * rangeX) + minX,
+          y: ((locY / barH) * rangeY) + minY
+        });
       }
+      /**
+       *
+       * @returns {undefined}
+       */
       function draw () {
         const
           barW = bar.w,
@@ -174,6 +187,14 @@ const jPicker = function ($) {
           /* eslint no-bitwise: ["error"] */
         });
       }
+
+      /**
+       * Get or set a value.
+       * @param {?("xy"|"x"|"y")} name
+       * @param {module:math.XYObject} value
+       * @param {module:jPicker.Slider} context
+       * @returns {module:math.XYObject|Float|undefined}
+       */
       function val (name, value, context) {
         const set = value !== undefined;
         if (!set) {
@@ -185,7 +206,7 @@ const jPicker = function ($) {
           default: return {x, y};
           }
         }
-        if (!isNullish(context) && context === that) return;
+        if (!isNullish(context) && context === that) return undefined;
         let changed = false;
 
         let newX, newY;
@@ -220,7 +241,31 @@ const jPicker = function ($) {
           }
         }
         changed && fireChangeEvents.call(that, context || that);
+        return undefined;
       }
+
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeX
+      * @property {Float} minX
+      * @property {Float} maxX
+      * @property {Float} rangeX
+      */
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeY
+      * @property {Float} minY
+      * @property {Float} maxY
+      * @property {Float} rangeY
+      */
+      /**
+      * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY
+      */
+
+      /**
+       *
+       * @param {"minx"|"maxx"|"rangex"|"miny"|"maxy"|"rangey"|"all"} name
+       * @param {module:jPicker.MinMaxRangeXY} value
+       * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}
+       */
       function range (name, value) {
         const set = value !== undefined;
         if (!set) {
@@ -290,15 +335,28 @@ const jPicker = function ($) {
           maxY = newMaxY;
           rangeY = maxY - minY;
         }
+        return undefined;
       }
-      function bind (callback) {
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+      function bind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback === 'function') changeEvents.push(callback);
       }
-      function unbind (callback) {
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+      function unbind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback !== 'function') return;
         let i;
         while ((i = changeEvents.includes(callback))) changeEvents.splice(i, 1);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function destroy () {
         // unbind all possible events and null objects
         $(document).unbind('mouseup', mouseUp).unbind('mousemove', mouseMove);
@@ -344,238 +402,283 @@ const jPicker = function ($) {
       bind.call(that, draw);
     }
   }
-  // controls for all the input elements for the typing in color values
-  function ColorValuePicker (picker, color, bindedHex, alphaPrecision) {
-    const that = this; // private properties and methods
-    const inputs = picker.find('td.Text input');
-    // input box key down - use arrows to alter color
-    function keyDown (e) {
-      if (e.target.value === '' && e.target !== hex.get(0) && ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) || isNullish(bindedHex))) return;
-      if (!validateKey(e)) return e;
-      switch (e.target) {
-      case red.get(0):
-        switch (e.keyCode) {
-        case 38:
-          red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));
-          color.val('r', red.val(), e.target);
-          return false;
-        case 40:
-          red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));
-          color.val('r', red.val(), e.target);
-          return false;
-        }
-        break;
-      case green.get(0):
-        switch (e.keyCode) {
-        case 38:
-          green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));
-          color.val('g', green.val(), e.target);
-          return false;
-        case 40:
-          green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));
-          color.val('g', green.val(), e.target);
-          return false;
-        }
-        break;
-      case blue.get(0):
-        switch (e.keyCode) {
-        case 38:
-          blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));
-          color.val('b', blue.val(), e.target);
-          return false;
-        case 40:
-          blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));
-          color.val('b', blue.val(), e.target);
-          return false;
-        }
-        break;
-      case alpha && alpha.get(0):
-        switch (e.keyCode) {
-        case 38:
-          alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));
-          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);
-          return false;
-        case 40:
-          alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));
-          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);
-          return false;
-        }
-        break;
-      case hue.get(0):
-        switch (e.keyCode) {
-        case 38:
-          hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));
-          color.val('h', hue.val(), e.target);
-          return false;
-        case 40:
-          hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));
-          color.val('h', hue.val(), e.target);
-          return false;
-        }
-        break;
-      case saturation.get(0):
-        switch (e.keyCode) {
-        case 38:
-          saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));
-          color.val('s', saturation.val(), e.target);
-          return false;
-        case 40:
-          saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));
-          color.val('s', saturation.val(), e.target);
-          return false;
-        }
-        break;
-      case value.get(0):
-        switch (e.keyCode) {
-        case 38:
-          value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));
-          color.val('v', value.val(), e.target);
-          return false;
-        case 40:
-          value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));
-          color.val('v', value.val(), e.target);
-          return false;
-        }
-        break;
-      }
-    }
-    // input box key up - validate value and set color
-    function keyUp (e) {
-      if (e.target.value === '' && e.target !== hex.get(0) &&
-        ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) ||
-        isNullish(bindedHex))) return;
-      if (!validateKey(e)) return e;
-      switch (e.target) {
-      case red.get(0):
-        red.val(setValueInRange.call(that, red.val(), 0, 255));
-        color.val('r', red.val(), e.target);
-        break;
-      case green.get(0):
-        green.val(setValueInRange.call(that, green.val(), 0, 255));
-        color.val('g', green.val(), e.target);
-        break;
-      case blue.get(0):
-        blue.val(setValueInRange.call(that, blue.val(), 0, 255));
-        color.val('b', blue.val(), e.target);
-        break;
-      case alpha && alpha.get(0):
-        alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));
-        color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);
-        break;
-      case hue.get(0):
-        hue.val(setValueInRange.call(that, hue.val(), 0, 360));
-        color.val('h', hue.val(), e.target);
-        break;
-      case saturation.get(0):
-        saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));
-        color.val('s', saturation.val(), e.target);
-        break;
-      case value.get(0):
-        value.val(setValueInRange.call(that, value.val(), 0, 100));
-        color.val('v', value.val(), e.target);
-        break;
-      case hex.get(0):
-        hex.val(hex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));
-        bindedHex && bindedHex.val(hex.val());
-        color.val('hex', hex.val() !== '' ? hex.val() : null, e.target);
-        break;
-      case bindedHex && bindedHex.get(0):
-        bindedHex.val(bindedHex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));
-        hex.val(bindedHex.val());
-        color.val('hex', bindedHex.val() !== '' ? bindedHex.val() : null, e.target);
-        break;
-      case ahex && ahex.get(0):
-        ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));
-        color.val('a', !isNullish(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);
-        break;
-      }
-    }
-    // input box blur - reset to original if value empty
-    function blur (e) {
-      if (!isNullish(color.val())) {
+
+  /**
+   * Controls for all the input elements for the typing in color values.
+   * @param {external:jQuery} picker
+   * @param {external:jQuery.jPicker.Color} color
+   * @param {external:jQuery.fn.$.fn.jPicker} bindedHex
+   * @param {Float} alphaPrecision
+   * @constructor
+   */
+  class ColorValuePicker {
+    constructor (picker, color, bindedHex, alphaPrecision) {
+      const that = this; // private properties and methods
+      const inputs = picker.find('td.Text input');
+      // input box key down - use arrows to alter color
+      /**
+       *
+       * @param {Event} e
+       * @returns {Event|false|undefined}
+       */
+      function keyDown (e) {
+        if (e.target.value === '' && e.target !== hex.get(0) && ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) || isNullish(bindedHex))) return undefined;
+        if (!validateKey(e)) return e;
         switch (e.target) {
-        case red.get(0): red.val(color.val('r')); break;
-        case green.get(0): green.val(color.val('g')); break;
-        case blue.get(0): blue.val(color.val('b')); break;
-        case alpha && alpha.get(0): alpha.val(toFixedNumeric((color.val('a') * 100) / 255, alphaPrecision)); break;
-        case hue.get(0): hue.val(color.val('h')); break;
-        case saturation.get(0): saturation.val(color.val('s')); break;
-        case value.get(0): value.val(color.val('v')); break;
-        case hex.get(0):
-        case bindedHex && bindedHex.get(0):
-          hex.val(color.val('hex'));
-          bindedHex && bindedHex.val(color.val('hex'));
+        case red.get(0):
+          switch (e.keyCode) {
+          case 38:
+            red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));
+            color.val('r', red.val(), e.target);
+            return false;
+          case 40:
+            red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));
+            color.val('r', red.val(), e.target);
+            return false;
+          }
           break;
-        case ahex && ahex.get(0): ahex.val(color.val('ahex').substring(6)); break;
+        case green.get(0):
+          switch (e.keyCode) {
+          case 38:
+            green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));
+            color.val('g', green.val(), e.target);
+            return false;
+          case 40:
+            green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));
+            color.val('g', green.val(), e.target);
+            return false;
+          }
+          break;
+        case blue.get(0):
+          switch (e.keyCode) {
+          case 38:
+            blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));
+            color.val('b', blue.val(), e.target);
+            return false;
+          case 40:
+            blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));
+            color.val('b', blue.val(), e.target);
+            return false;
+          }
+          break;
+        case alpha && alpha.get(0):
+          switch (e.keyCode) {
+          case 38:
+            alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));
+            color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);
+            return false;
+          case 40:
+            alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));
+            color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);
+            return false;
+          }
+          break;
+        case hue.get(0):
+          switch (e.keyCode) {
+          case 38:
+            hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));
+            color.val('h', hue.val(), e.target);
+            return false;
+          case 40:
+            hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));
+            color.val('h', hue.val(), e.target);
+            return false;
+          }
+          break;
+        case saturation.get(0):
+          switch (e.keyCode) {
+          case 38:
+            saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));
+            color.val('s', saturation.val(), e.target);
+            return false;
+          case 40:
+            saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));
+            color.val('s', saturation.val(), e.target);
+            return false;
+          }
+          break;
+        case value.get(0):
+          switch (e.keyCode) {
+          case 38:
+            value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));
+            color.val('v', value.val(), e.target);
+            return false;
+          case 40:
+            value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));
+            color.val('v', value.val(), e.target);
+            return false;
+          }
+          break;
+        }
+        return undefined;
+      }
+      // input box key up - validate value and set color
+      /**
+      * @param {Event} e
+      * @returns {Event|undefined}
+      * @todo Why is this returning an event?
+      */
+      function keyUp (e) {
+        if (e.target.value === '' && e.target !== hex.get(0) &&
+          ((!isNullish(bindedHex) && e.target !== bindedHex.get(0)) ||
+          isNullish(bindedHex))) return undefined;
+        if (!validateKey(e)) return e;
+        switch (e.target) {
+        case red.get(0):
+          red.val(setValueInRange.call(that, red.val(), 0, 255));
+          color.val('r', red.val(), e.target);
+          break;
+        case green.get(0):
+          green.val(setValueInRange.call(that, green.val(), 0, 255));
+          color.val('g', green.val(), e.target);
+          break;
+        case blue.get(0):
+          blue.val(setValueInRange.call(that, blue.val(), 0, 255));
+          color.val('b', blue.val(), e.target);
+          break;
+        case alpha && alpha.get(0):
+          alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));
+          color.val('a', toFixedNumeric((alpha.val() * 255) / 100, alphaPrecision), e.target);
+          break;
+        case hue.get(0):
+          hue.val(setValueInRange.call(that, hue.val(), 0, 360));
+          color.val('h', hue.val(), e.target);
+          break;
+        case saturation.get(0):
+          saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));
+          color.val('s', saturation.val(), e.target);
+          break;
+        case value.get(0):
+          value.val(setValueInRange.call(that, value.val(), 0, 100));
+          color.val('v', value.val(), e.target);
+          break;
+        case hex.get(0):
+          hex.val(hex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));
+          bindedHex && bindedHex.val(hex.val());
+          color.val('hex', hex.val() !== '' ? hex.val() : null, e.target);
+          break;
+        case bindedHex && bindedHex.get(0):
+          bindedHex.val(bindedHex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 6));
+          hex.val(bindedHex.val());
+          color.val('hex', bindedHex.val() !== '' ? bindedHex.val() : null, e.target);
+          break;
+        case ahex && ahex.get(0):
+          ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));
+          color.val('a', !isNullish(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);
+          break;
+        }
+        return undefined;
+      }
+      // input box blur - reset to original if value empty
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
+      function blur (e) {
+        if (!isNullish(color.val())) {
+          switch (e.target) {
+          case red.get(0): red.val(color.val('r')); break;
+          case green.get(0): green.val(color.val('g')); break;
+          case blue.get(0): blue.val(color.val('b')); break;
+          case alpha && alpha.get(0): alpha.val(toFixedNumeric((color.val('a') * 100) / 255, alphaPrecision)); break;
+          case hue.get(0): hue.val(color.val('h')); break;
+          case saturation.get(0): saturation.val(color.val('s')); break;
+          case value.get(0): value.val(color.val('v')); break;
+          case hex.get(0):
+          case bindedHex && bindedHex.get(0):
+            hex.val(color.val('hex'));
+            bindedHex && bindedHex.val(color.val('hex'));
+            break;
+          case ahex && ahex.get(0): ahex.val(color.val('ahex').substring(6)); break;
+          }
         }
       }
-    }
-    function validateKey (e) {
-      switch (e.keyCode) {
-      case 9:
-      case 16:
-      case 29:
-      case 37:
-      case 39:
-        return false;
-      case 'c'.charCodeAt():
-      case 'v'.charCodeAt():
-        if (e.ctrlKey) return false;
+      /**
+      * @param {Event} e
+      * @returns {boolean}
+      */
+      function validateKey (e) {
+        switch (e.keyCode) {
+        case 9:
+        case 16:
+        case 29:
+        case 37:
+        case 39:
+          return false;
+        case 'c'.charCodeAt():
+        case 'v'.charCodeAt():
+          if (e.ctrlKey) return false;
+        }
+        return true;
       }
-      return true;
+
+      /**
+      * Constrain value within range.
+      * @param {Float|string} value
+      * @param {Float} min
+      * @param {Float} max
+      * @returns {Float|string} Returns a number or numeric string
+      */
+      function setValueInRange (value, min, max) {
+        if (value === '' || isNaN(value)) return min;
+        if (value > max) return max;
+        if (value < min) return min;
+        return value;
+      }
+      /**
+      * @param {external:jQuery} ui
+      * @param {Element} context
+      * @returns {undefined}
+      */
+      function colorChanged (ui, context) {
+        const all = ui.val('all');
+        if (context !== red.get(0)) red.val(!isNullish(all) ? all.r : '');
+        if (context !== green.get(0)) green.val(!isNullish(all) ? all.g : '');
+        if (context !== blue.get(0)) blue.val(!isNullish(all) ? all.b : '');
+        if (alpha && context !== alpha.get(0)) alpha.val(!isNullish(all) ? toFixedNumeric((all.a * 100) / 255, alphaPrecision) : '');
+        if (context !== hue.get(0)) hue.val(!isNullish(all) ? all.h : '');
+        if (context !== saturation.get(0)) saturation.val(!isNullish(all) ? all.s : '');
+        if (context !== value.get(0)) value.val(!isNullish(all) ? all.v : '');
+        if (context !== hex.get(0) && ((bindedHex && context !== bindedHex.get(0)) || !bindedHex)) hex.val(!isNullish(all) ? all.hex : '');
+        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish(all) ? all.hex : '');
+        if (ahex && context !== ahex.get(0)) ahex.val(!isNullish(all) ? all.ahex.substring(6) : '');
+      }
+      /**
+      * Unbind all events and null objects.
+      * @returns {undefined}
+      */
+      function destroy () {
+        red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);
+        red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);
+        color.unbind(colorChanged);
+        red = null;
+        green = null;
+        blue = null;
+        alpha = null;
+        hue = null;
+        saturation = null;
+        value = null;
+        hex = null;
+        ahex = null;
+      }
+      let
+        red = inputs.eq(3),
+        green = inputs.eq(4),
+        blue = inputs.eq(5),
+        alpha = inputs.length > 7 ? inputs.eq(6) : null,
+        hue = inputs.eq(0),
+        saturation = inputs.eq(1),
+        value = inputs.eq(2),
+        hex = inputs.eq(inputs.length > 7 ? 7 : 6),
+        ahex = inputs.length > 7 ? inputs.eq(8) : null;
+      $.extend(true, that, {
+        // public properties and methods
+        destroy
+      });
+      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);
+      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);
+      color.bind(colorChanged);
     }
-    // constrain value within range
-    function setValueInRange (value, min, max) {
-      if (value === '' || isNaN(value)) return min;
-      if (value > max) return max;
-      if (value < min) return min;
-      return value;
-    }
-    function colorChanged (ui, context) {
-      const all = ui.val('all');
-      if (context !== red.get(0)) red.val(!isNullish(all) ? all.r : '');
-      if (context !== green.get(0)) green.val(!isNullish(all) ? all.g : '');
-      if (context !== blue.get(0)) blue.val(!isNullish(all) ? all.b : '');
-      if (alpha && context !== alpha.get(0)) alpha.val(!isNullish(all) ? toFixedNumeric((all.a * 100) / 255, alphaPrecision) : '');
-      if (context !== hue.get(0)) hue.val(!isNullish(all) ? all.h : '');
-      if (context !== saturation.get(0)) saturation.val(!isNullish(all) ? all.s : '');
-      if (context !== value.get(0)) value.val(!isNullish(all) ? all.v : '');
-      if (context !== hex.get(0) && ((bindedHex && context !== bindedHex.get(0)) || !bindedHex)) hex.val(!isNullish(all) ? all.hex : '');
-      if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish(all) ? all.hex : '');
-      if (ahex && context !== ahex.get(0)) ahex.val(!isNullish(all) ? all.ahex.substring(6) : '');
-    }
-    function destroy () {
-      // unbind all events and null objects
-      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);
-      red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);
-      color.unbind(colorChanged);
-      red = null;
-      green = null;
-      blue = null;
-      alpha = null;
-      hue = null;
-      saturation = null;
-      value = null;
-      hex = null;
-      ahex = null;
-    }
-    let
-      red = inputs.eq(3),
-      green = inputs.eq(4),
-      blue = inputs.eq(5),
-      alpha = inputs.length > 7 ? inputs.eq(6) : null,
-      hue = inputs.eq(0),
-      saturation = inputs.eq(1),
-      value = inputs.eq(2),
-      hex = inputs.eq(inputs.length > 7 ? 7 : 6),
-      ahex = inputs.length > 7 ? inputs.eq(8) : null;
-    $.extend(true, that, {
-      // public properties and methods
-      destroy
-    });
-    red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);
-    red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);
-    color.bind(colorChanged);
   }
 
   /**
@@ -612,27 +715,44 @@ const jPicker = function ($) {
     * @memberof external:jQuery.jPicker
     * @param {module:jPicker.JPickerInit} init
     */
-    Color: function (init) {
+    Color: function (init) { // eslint-disable-line object-shorthand
       const that = this;
+      /**
+       *
+       * @param {module:jPicker.Slider} context
+       * @returns {undefined}
+       */
       function fireChangeEvents (context) {
         for (let i = 0; i < changeEvents.length; i++) changeEvents[i].call(that, that, context);
       }
+
+      /**
+       * @param {string|"ahex"|"hex"|"all"|""|null|undefined} name String composed of letters "r", "g", "b", "a", "h", "s", and/or "v"
+       * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]
+       * @param {external:jQuery.jPicker.Color} context
+       * @returns {module:jPicker.JPickerInit|string|null|undefined}
+       */
       function val (name, value, context) {
         // Kind of ugly
         const set = Boolean(value);
         if (set && value.ahex === '') value.ahex = '00000000';
         if (!set) {
+          let ret;
           if (isNullish(name) || name === '') name = 'all';
           if (isNullish(r)) return null;
           switch (name.toLowerCase()) {
           case 'ahex': return ColorMethods.rgbaToHex({r, g, b, a});
           case 'hex': return val('ahex').substring(0, 6);
-          case 'all': return {r, g, b, a, h, s, v, hex: val.call(that, 'hex'), ahex: val.call(that, 'ahex')};
-          default:
-            let ret = {};
+          case 'all': return {
+            r, g, b, a, h, s, v,
+            hex: val.call(that, 'hex'),
+            ahex: val.call(that, 'ahex')
+          };
+          default: {
+            ret = {};
             const nameLength = name.length;
-            for (let i = 0; i < nameLength; i++) {
-              switch (name.charAt(i)) {
+            [...name].forEach((ch) => {
+              switch (ch) {
               case 'r':
                 if (nameLength === 1) ret = r;
                 else ret.r = r;
@@ -662,13 +782,14 @@ const jPicker = function ($) {
                 else ret.v = v;
                 break;
               }
-            }
-            return typeof ret === 'object' && !Object.keys(ret).length
-              ? val.call(that, 'all')
-              : ret;
+            });
           }
+          }
+          return typeof ret === 'object' && !Object.keys(ret).length
+            ? val.call(that, 'all')
+            : ret;
         }
-        if (!isNullish(context) && context === that) return;
+        if (!isNullish(context) && context === that) return undefined;
         if (isNullish(name)) name = '';
 
         let changed = false;
@@ -702,18 +823,27 @@ const jPicker = function ($) {
             changed = true;
           }
           changed && fireChangeEvents.call(that, context || that);
-          return;
+          return undefined;
         }
         switch (name.toLowerCase()) {
         case 'ahex':
         case 'hex': {
           const ret = ColorMethods.hexToRgba((value && (value.ahex || value.hex)) || value || 'none');
-          val.call(that, 'rgba', {r: ret.r, g: ret.g, b: ret.b, a: name === 'ahex' ? ret.a : !isNullish(a) ? a : 255}, context);
+          val.call(that, 'rgba', {
+            r: ret.r,
+            g: ret.g,
+            b: ret.b,
+            a: name === 'ahex'
+              ? ret.a
+              : !isNullish(a)
+                ? a
+                : 255
+          }, context);
           break;
         } default: {
           if (value && (!isNullish(value.ahex) || !isNullish(value.hex))) {
             val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);
-            return;
+            return undefined;
           }
           const newV = {};
           let rgb = false, hsv = false;
@@ -724,10 +854,10 @@ const jPicker = function ($) {
           if (value.h !== undefined && !name.includes('h')) name += 'h';
           if (value.s !== undefined && !name.includes('s')) name += 's';
           if (value.v !== undefined && !name.includes('v')) name += 'v';
-          for (let i = 0; i < name.length; i++) {
-            switch (name.charAt(i)) {
+          [...name].forEach((ch) => {
+            switch (ch) {
             case 'r':
-              if (hsv) continue;
+              if (hsv) return;
               rgb = true;
               newV.r = (value.r && value.r | 0) || (value | 0) || 0;
               if (newV.r < 0) newV.r = 0;
@@ -738,7 +868,7 @@ const jPicker = function ($) {
               }
               break;
             case 'g':
-              if (hsv) continue;
+              if (hsv) return;
               rgb = true;
               newV.g = (value && value.g && value.g | 0) || (value && value | 0) || 0;
               if (newV.g < 0) newV.g = 0;
@@ -749,7 +879,7 @@ const jPicker = function ($) {
               }
               break;
             case 'b':
-              if (hsv) continue;
+              if (hsv) return;
               rgb = true;
               newV.b = (value && value.b && value.b | 0) || (value && value | 0) || 0;
               if (newV.b < 0) newV.b = 0;
@@ -769,7 +899,7 @@ const jPicker = function ($) {
               }
               break;
             case 'h':
-              if (rgb) continue;
+              if (rgb) return;
               hsv = true;
               newV.h = (value && value.h && value.h | 0) || (value && value | 0) || 0;
               if (newV.h < 0) newV.h = 0;
@@ -780,7 +910,7 @@ const jPicker = function ($) {
               }
               break;
             case 's':
-              if (rgb) continue;
+              if (rgb) return;
               hsv = true;
               newV.s = !isNullish(value.s) ? value.s | 0 : value | 0;
               if (newV.s < 0) newV.s = 0;
@@ -791,7 +921,7 @@ const jPicker = function ($) {
               }
               break;
             case 'v':
-              if (rgb) continue;
+              if (rgb) return;
               hsv = true;
               newV.v = !isNullish(value.v) ? value.v | 0 : value | 0;
               if (newV.v < 0) newV.v = 0;
@@ -802,7 +932,7 @@ const jPicker = function ($) {
               }
               break;
             }
-          }
+          });
           if (changed) {
             if (rgb) {
               r = r || 0;
@@ -823,17 +953,30 @@ const jPicker = function ($) {
           break;
         }
         }
+        return undefined;
       }
-      function bind (callback) {
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+      function bind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback === 'function') changeEvents.push(callback);
       }
-      function unbind (callback) {
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+      function unbind (callback) { // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback !== 'function') return;
         let i;
         while ((i = changeEvents.includes(callback))) {
           changeEvents.splice(i, 1);
         }
       }
+      /**
+      * Unset `changeEvents`
+      * @returns {undefined}
+      */
       function destroy () {
         changeEvents = null;
       }
@@ -1047,6 +1190,26 @@ const jPicker = function ($) {
    * @function external:jQuery.fn.jPicker
    * @see {@link external:jQuery.fn.$.fn.jPicker}
    */
+
+  /**
+  * Will be bound to active {@link jQuery.jPicker.Color}
+  * @callback module:jPicker.LiveCallback
+  * @param {external:jQuery} ui
+  * @param {Element} context
+  * @returns {undefined}
+  */
+  /**
+  * @callback module:jPicker.CommitCallback
+  * @param {external:jQuery.jPicker.Color} activeColor
+  * @param {external:jQuery} okButton
+  * @returns {undefined} Return value not used.
+  */
+  /**
+   * @callback module:jPicker.CancelCallback
+   * @param {external:jQuery.jPicker.Color} activeColor
+   * @param {external:jQuery} cancelButton
+   * @returns {undefined} Return value not used.
+   */
   /**
   * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't
   *   get us treated as a function as well as a namespace (even with `@function name`),
@@ -1054,9 +1217,9 @@ const jPicker = function ($) {
   * @namespace
   * @memberof external:jQuery.fn
   * @param {external:jQuery.fn.jPickerOptions} options
-  * @param {function} [commitCallback]
-  * @param {function} [liveCallback]
-  * @param {function} [cancelCallback]
+  * @param {module:jPicker.CommitCallback} [commitCallback]
+  * @param {module:jPicker.LiveCallback} [liveCallback]
+  * @param {module:jPicker.CancelCallback} [cancelCallback]
   * @returns {external:jQuery}
   */
   $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {
@@ -1088,7 +1251,7 @@ const jPicker = function ($) {
       // set color mode and update visuals for the new color mode
       /**
        *
-       * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode [description]
+       * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode
        * @throws {Error} Invalid mode
        * @returns {undefined}
        */
@@ -1242,7 +1405,12 @@ const jPicker = function ($) {
         if (isNullish(active.val('ahex'))) return;
         activeColorChanged.call(that, active);
       }
-      // Update color when user changes text values
+      /**
+       * Update color when user changes text values.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
       function activeColorChanged (ui, context) {
         if (isNullish(context) || (context !== colorBar && context !== colorMap)) positionMapAndBarArrows.call(that, ui, context);
         setTimeout(function () {
@@ -1251,7 +1419,13 @@ const jPicker = function ($) {
           updateBarVisuals.call(that, ui);
         }, 0);
       }
-      // user has dragged the ColorMap pointer
+
+      /**
+       * User has dragged the ColorMap pointer.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
       function mapValueChanged (ui, context) {
         const {active} = color;
         if (context !== colorMap && isNullish(active.val())) return;
@@ -1278,7 +1452,13 @@ const jPicker = function ($) {
           break;
         }
       }
-      // user has dragged the ColorBar slider
+
+      /**
+       * User has dragged the ColorBar slider.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
       function colorBarValueChanged (ui, context) {
         const {active} = color;
         if (context !== colorBar && isNullish(active.val())) return;
@@ -1306,7 +1486,13 @@ const jPicker = function ($) {
           break;
         }
       }
-      // position map and bar arrows to match current color
+
+      /**
+       * Position map and bar arrows to match current color.
+       * @param {external:jQuery} ui
+       * @param {?module:jPicker.Slider} context
+       * @returns {undefined}
+      */
       function positionMapAndBarArrows (ui, context) {
         if (context !== colorMap) {
           switch (settings.color.mode) {
@@ -1314,8 +1500,7 @@ const jPicker = function ($) {
             const sv = ui.val('sv');
             colorMap.val('xy', {x: !isNullish(sv) ? sv.s : 100, y: 100 - (!isNullish(sv) ? sv.v : 100)}, context);
             break;
-          } case 's': { // eslint-disable-line no-empty
-          }
+          } case 's':
           // Fall through
           case 'a': {
             const hv = ui.val('hv');
@@ -1370,6 +1555,10 @@ const jPicker = function ($) {
           }
         }
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
       function updatePreview (ui) {
         try {
           const all = ui.val('all');
@@ -1377,6 +1566,10 @@ const jPicker = function ($) {
           setAlpha.call(that, activePreview, (all && toFixedNumeric((all.a * 100) / 255, 4)) || 0);
         } catch (e) { }
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
       function updateMapVisuals (ui) {
         switch (settings.color.mode) {
         case 'h':
@@ -1404,6 +1597,10 @@ const jPicker = function ($) {
         const a = ui.val('a');
         setAlpha.call(that, colorMapL3, toFixedNumeric(((255 - (a || 0)) * 100) / 255, 4));
       }
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
       function updateBarVisuals (ui) {
         switch (settings.color.mode) {
         case 'h': {
@@ -1453,18 +1650,39 @@ const jPicker = function ($) {
         }
         }
       }
+      /**
+      * @param {external:jQuery} el
+      * @param {string} [c="transparent"]
+      * @returns {undefined}
+      */
       function setBG (el, c) {
         el.css({backgroundColor: (c && c.length === 6 && '#' + c) || 'transparent'});
       }
+
+      /**
+      * @param {external:jQuery} img
+      * @param {string} src The image source
+      * @returns {undefined}
+      */
       function setImg (img, src) {
         if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
           img.attr('pngSrc', src);
           img.css({backgroundImage: 'none', filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\')'});
         } else img.css({backgroundImage: 'url(\'' + src + '\')'});
       }
+      /**
+      * @param {external:jQuery} img
+      * @param {Float} y
+      * @returns {undefined}
+      */
       function setImgLoc (img, y) {
         img.css({top: y + 'px'});
       }
+      /**
+      * @param {external:jQuery} obj
+      * @param {Float} alpha
+      * @returns {undefined}
+      */
       function setAlpha (obj, alpha) {
         obj.css({visibility: alpha > 0 ? 'visible' : 'hidden'});
         if (alpha > 0 && alpha < 100) {
@@ -1473,7 +1691,10 @@ const jPicker = function ($) {
             if (!isNullish(src) && (
               src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')
             )) {
-              obj.css({filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'});
+              obj.css({
+                filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src +
+                  '\', sizingMethod=\'scale\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'
+              });
             } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});
           } else obj.css({opacity: toFixedNumeric(alpha / 100, 4)});
         } else if (alpha === 0 || alpha === 100) {
@@ -1482,45 +1703,83 @@ const jPicker = function ($) {
             if (!isNullish(src) && (
               src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png')
             )) {
-              obj.css({filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\')'});
+              obj.css({
+                filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src +
+                '\', sizingMethod=\'scale\')'
+              });
             } else obj.css({opacity: ''});
           } else obj.css({opacity: ''});
         }
       }
-      // revert color to original color when opened
+
+      /**
+      * Revert color to original color when opened.
+      * @returns {undefined}
+      */
       function revertColor () {
         color.active.val('ahex', color.current.val('ahex'));
       }
-      // commit the color changes
+      /**
+      * Commit the color changes.
+      * @returns {undefined}
+      */
       function commitColor () {
         color.current.val('ahex', color.active.val('ahex'));
       }
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
       function radioClicked (e) {
         $(this).parents('tbody:first').find('input:radio[value!="' + e.target.value + '"]').removeAttr('checked');
         setColorMode.call(that, e.target.value);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function currentClicked () {
         revertColor.call(that);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function cancelClicked () {
         revertColor.call(that);
         settings.window.expandable && hide.call(that);
         typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function okClicked () {
         commitColor.call(that);
         settings.window.expandable && hide.call(that);
         typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function iconImageClicked () {
         show.call(that);
       }
-      function currentColorChanged (ui, context) {
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
+      function currentColorChanged (ui) {
         const hex = ui.val('hex');
         currentPreview.css({backgroundColor: (hex && '#' + hex) || 'transparent'});
         setAlpha.call(that, currentPreview, toFixedNumeric(((ui.val('a') || 0) * 100) / 255, 4));
       }
-      function expandableColorChanged (ui, context) {
+      /**
+      * @param {external:jQuery} ui
+      * @returns {undefined}
+      */
+      function expandableColorChanged (ui) {
         const hex = ui.val('hex');
         const va = ui.val('va');
         iconColor.css({backgroundColor: (hex && '#' + hex) || 'transparent'});
@@ -1532,6 +1791,10 @@ const jPicker = function ($) {
           });
         }
       }
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
       function moveBarMouseDown (e) {
         // const {element} = settings.window, // local copies for YUI compressor
         //     {page} = settings.window;
@@ -1543,32 +1806,67 @@ const jPicker = function ($) {
         $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);
         e.preventDefault(); // prevent attempted dragging of the column
       }
+      /**
+      * @param {Event} e
+      * @returns {false}
+      */
       function documentMouseMove (e) {
-        container.css({left: elementStartX - (pageStartX - e.pageX) + 'px', top: elementStartY - (pageStartY - e.pageY) + 'px'});
-        if (settings.window.expandable && !$.support.boxModel) container.prev().css({left: container.css('left'), top: container.css('top')});
+        container.css({
+          left: elementStartX - (pageStartX - e.pageX) + 'px',
+          top: elementStartY - (pageStartY - e.pageY) + 'px'
+        });
+        if (settings.window.expandable && !$.support.boxModel) {
+          container.prev().css({
+            left: container.css('left'),
+            top: container.css('top')
+          });
+        }
         e.stopPropagation();
         e.preventDefault();
         return false;
       }
+      /**
+      * @param {Event} e
+      * @returns {false}
+      */
       function documentMouseUp (e) {
         $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);
         e.stopPropagation();
         e.preventDefault();
         return false;
       }
+      /**
+      * @param {Event} e
+      * @returns {false}
+      */
       function quickPickClicked (e) {
         e.preventDefault();
         e.stopPropagation();
         color.active.val('ahex', $(this).attr('title') || null, e.target);
         return false;
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function show () {
         color.current.val('ahex', color.active.val('ahex'));
+        /**
+        *
+        * @returns {undefined}
+        */
         function attachIFrame () {
           if (!settings.window.expandable || $.support.boxModel) return;
           const table = container.find('table:first');
           container.before('<iframe/>');
-          container.prev().css({width: table.width(), height: container.height(), opacity: 0, position: 'absolute', left: container.css('left'), top: container.css('top')});
+          container.prev().css({
+            width: table.width(),
+            height: container.height(),
+            opacity: 0,
+            position: 'absolute',
+            left: container.css('left'),
+            top: container.css('top')
+          });
         }
         if (settings.window.expandable) {
           $(document.body).children('div.jPicker.Container').css({zIndex: 10});
@@ -1587,7 +1885,15 @@ const jPicker = function ($) {
           break;
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function hide () {
+        /**
+        *
+        * @returns {undefined}
+        */
         function removeIFrame () {
           if (settings.window.expandable) container.css({zIndex: 10});
           if (!settings.window.expandable || $.support.boxModel) return;
@@ -1606,13 +1912,20 @@ const jPicker = function ($) {
           break;
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function initialize () {
         const win = settings.window,
           popup = win.expandable ? $(that).next().find('.Container:first') : null;
         container = win.expandable ? $('<div/>') : $(that);
         container.addClass('jPicker Container');
         if (win.expandable) container.hide();
-        container.get(0).onselectstart = function (e) { if (e.target.nodeName.toLowerCase() !== 'input') return false; };
+        container.get(0).onselectstart = function (e) {
+          if (e.target.nodeName.toLowerCase() !== 'input') return false;
+          return true;
+        };
         // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and
         // this control really is tabular data, so I believe it is the right move
         const all = color.active.val('all');
@@ -1747,7 +2060,8 @@ const jPicker = function ($) {
         colorPicker = new ColorValuePicker(
           tbody,
           color.active,
-          win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision
+          win.expandable && win.bindToInput ? win.input : null,
+          win.alphaPrecision
         );
         const hex = !isNullish(all) ? all.hex : null,
           preview = tbody.find('.Preview'),
@@ -1812,6 +2126,10 @@ const jPicker = function ($) {
           color.active.bind(expandableColorChanged);
         } else show.call(that);
       }
+      /**
+      *
+      * @returns {undefined}
+      */
       function destroy () {
         container.find('td.Radio input').unbind('click', radioClicked);
         currentPreview.unbind('click', currentClicked);
@@ -1972,6 +2290,9 @@ const jPicker = function ($) {
   * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do
   * not map directly to percentage integers - range 0-2
   * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing
+  * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`
+  * @property {boolean} [window.expandable] Added by `$.fn.jPicker`
+  * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`
   * @property {PlainObject} color
   * @property {"h"|"s"|"v"|"r"|"g"|"b"|"a"} color.mode Symbols stand for "h" (hue), "s" (saturation), "v" (value), "r" (red), "g" (green), "b" (blue), "a" (alpha)
   * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the "#" prefix
diff --git a/editor/jspdf/jspdf.plugin.svgToPdf.js b/editor/jspdf/jspdf.plugin.svgToPdf.js
index 41c07fe3..58325df0 100644
--- a/editor/jspdf/jspdf.plugin.svgToPdf.js
+++ b/editor/jspdf/jspdf.plugin.svgToPdf.js
@@ -68,8 +68,8 @@ const getLinesOptionsOfPoly = function (node) {
     }
   }
   if (nums.length < 4) {
-    console.log('invalid points attribute:', node);
-    return;
+    console.log('invalid points attribute:', node); // eslint-disable-line no-console
+    return undefined;
   }
   const [x, y] = nums, lines = [];
   for (let i = 2; i < nums.length; i += 2) {
@@ -171,7 +171,7 @@ const svgElementToPdf = function (element, pdf, options) {
       removeAttributes(node, pdfSvgAttr.circle);
       break;
     case 'polygon':
-    case 'polyline':
+    case 'polyline': {
       const linesOptions = getLinesOptionsOfPoly(node);
       if (linesOptions) {
         pdf.lines(
@@ -186,7 +186,7 @@ const svgElementToPdf = function (element, pdf, options) {
       removeAttributes(node, pdfSvgAttr.polygon);
       break;
     // TODO: path
-    case 'text':
+    } case 'text': {
       if (node.hasAttribute('font-family')) {
         switch ((node.getAttribute('font-family') || '').toLowerCase()) {
         case 'serif': pdf.setFont('times'); break;
@@ -219,19 +219,24 @@ const svgElementToPdf = function (element, pdf, options) {
         ? parseInt(node.getAttribute('font-size'))
         : 16;
 
-      const getWidth = (node) => {
+      /**
+       *
+       * @param {Element} elem
+       * @returns {Float}
+       */
+      const getWidth = (elem) => {
         let box;
         try {
-          box = node.getBBox(); // Firefox on MacOS will raise error here
+          box = elem.getBBox(); // Firefox on MacOS will raise error here
         } catch (err) {
           // copy and append to body so that getBBox is available
-          const nodeCopy = node.cloneNode(true);
-          const svg = node.ownerSVGElement.cloneNode(false);
+          const nodeCopy = elem.cloneNode(true);
+          const svg = elem.ownerSVGElement.cloneNode(false);
           svg.appendChild(nodeCopy);
           document.body.appendChild(svg);
           try {
             box = nodeCopy.getBBox();
-          } catch (err) {
+          } catch (error) {
             box = {width: 0};
           }
           document.body.removeChild(svg);
@@ -259,9 +264,9 @@ const svgElementToPdf = function (element, pdf, options) {
       removeAttributes(node, pdfSvgAttr.text);
       break;
     // TODO: image
-    default:
+    } default:
       if (remove) {
-        console.log("can't translate to pdf:", node);
+        console.log("can't translate to pdf:", node); // eslint-disable-line no-console
         node.remove();
       }
     }
diff --git a/editor/locale/locale.js b/editor/locale/locale.js
index e65cd074..b0fed603 100644
--- a/editor/locale/locale.js
+++ b/editor/locale/locale.js
@@ -39,7 +39,9 @@ export const setStrings = function (type, obj, ids) {
   // Root element to look for element from
   const parent = $('#svg_editor').parent();
   Object.entries(obj).forEach(([sel, val]) => {
-    if (!val) { console.log(sel); }
+    if (!val) {
+      console.log(sel); // eslint-disable-line no-console
+    }
 
     if (ids) { sel = '#' + sel; }
     const $elem = parent.find(sel);
@@ -53,6 +55,7 @@ export const setStrings = function (type, obj, ids) {
             node.textContent = val;
             return true;
           }
+          return false;
         });
         break;
 
@@ -61,7 +64,7 @@ export const setStrings = function (type, obj, ids) {
         break;
       }
     } else {
-      console.log('Missing: ' + sel);
+      console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console
     }
   });
 };
@@ -114,7 +117,7 @@ export const readLang = async function (langData) {
   });
 
   // Old locale file, do nothing for now.
-  if (!langData.tools) { return; }
+  if (!langData.tools) { return undefined; }
 
   const {
     tools,
@@ -331,7 +334,7 @@ export const putLocale = async function (givenParam, goodLangs, conf) {
       }
     }
 
-    console.log('Lang: ' + langParam);
+    console.log('Lang: ' + langParam); // eslint-disable-line no-console
 
     // Set to English if language is not in list of good langs
     if (!goodLangs.includes(langParam) && langParam !== 'test') {
diff --git a/editor/spinbtn/jQuery.SpinButton.js b/editor/spinbtn/jQuery.SpinButton.js
index 7f1e60e7..7deb2299 100644
--- a/editor/spinbtn/jQuery.SpinButton.js
+++ b/editor/spinbtn/jQuery.SpinButton.js
@@ -84,18 +84,20 @@ export default function jQueryPluginSpinButton ($) {
   /**
   * @callback module:jQuerySpinButton.StepCallback
   * @param {external:jQuery} thisArg Value of `this`
+  * @param {Float} i Value to adjust
+  * @returns {Float}
   */
   /**
   * @callback module:jQuerySpinButton.ValueCallback
-  * @param {external:jQuery} thisArg Value of `this`
-  * @param {Float} value Value that was changed
+  * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.
+  * @returns {undefined}
   */
   /**
    * @typedef {PlainObject} module:jQuerySpinButton.SpinButtonConfig
    * @property {Float} min Set lower limit
    * @property {Float} max Set upper limit.
    * @property {Float} step Set increment size.
-   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust
+   * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.
    * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)
    * @property {Float} smallStep Set shift-click increment size.
    * @property {PlainObject} stateObj Object to allow passing in live-updating scale
@@ -115,6 +117,13 @@ export default function jQueryPluginSpinButton ($) {
   */
   $.fn.SpinButton = function (cfg) {
     cfg = cfg || {};
+
+    /**
+     *
+     * @param {Element} el
+     * @param {"offsetLeft"|"offsetTop"} prop
+     * @returns {Integer}
+     */
     function coord (el, prop) {
       const b = document.body;
 
@@ -169,7 +178,9 @@ export default function jQueryPluginSpinButton ($) {
         if (this.spinCfg.min !== null) { v = Math.max(v, this.spinCfg.min); }
         if (this.spinCfg.max !== null) { v = Math.min(v, this.spinCfg.max); }
         this.value = v;
-        if (typeof this.spinCfg.callback === 'function') { this.spinCfg.callback(this); }
+        if (typeof this.spinCfg.callback === 'function') {
+          this.spinCfg.callback(this);
+        }
       };
 
       $(this)
@@ -186,7 +197,8 @@ export default function jQueryPluginSpinButton ($) {
           const direction =
             (x > coord(el, 'offsetLeft') +
               el.offsetWidth * scale - this.spinCfg._btn_width)
-              ? ((y < coord(el, 'offsetTop') + height * scale) ? 1 : -1) : 0;
+              ? ((y < coord(el, 'offsetTop') + height * scale) ? 1 : -1)
+              : 0;
 
           if (direction !== this.spinCfg._direction) {
             // Style up/down buttons:
diff --git a/editor/svg-editor.js b/editor/svg-editor.js
index bd001fe8..0dd7f8b0 100644
--- a/editor/svg-editor.js
+++ b/editor/svg-editor.js
@@ -21,6 +21,8 @@ import jQueryPluginSpinButton from './spinbtn/jQuery.SpinButton.js';
 import jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`
 import jQueryPluginContextMenu from './contextmenu/jQuery.contextMenu.js';
 import jQueryPluginJPicker from './jgraduate/jQuery.jPicker.js';
+import jQueryPluginDBox from './dbox.js';
+
 import {
   readLang, putLocale,
   setStrings,
@@ -310,16 +312,27 @@ let svgCanvas, urldata,
     allowedOrigins: []
   };
 
-function loadSvgString (str, callback) {
+/**
+ *
+ * @param {string} str SVG string
+ * @param {PlainObject} [opts={}]
+ * @param {boolean} [opts.noAlert]
+ * @throws {Error} Upon failure to load SVG
+ * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is
+ *   falsey, though only until after the `alert` is closed); rejects if SVG
+ *   loading fails and `noAlert` is truthy.
+ */
+async function loadSvgString (str, {noAlert} = {}) {
   const success = svgCanvas.setSvgString(str) !== false;
-  callback = callback || $.noop;
   if (success) {
-    callback(true); // eslint-disable-line standard/no-callback-literal
-  } else {
-    $.alert(uiStrings.notification.errorLoadingSVG, function () {
-      callback(false); // eslint-disable-line standard/no-callback-literal
-    });
+    return;
   }
+
+  if (!noAlert) {
+    await $.alert(uiStrings.notification.errorLoadingSVG);
+    return;
+  }
+  throw new Error('Error loading SVG');
 }
 
 /**
@@ -412,7 +425,7 @@ editor.setStrings = setStrings;
 editor.loadContentAndPrefs = function () {
   if (!curConfig.forceStorage &&
     (curConfig.noStorageOnLoad ||
-        !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/)
+        !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/)
     )
   ) {
     return;
@@ -422,7 +435,7 @@ editor.loadContentAndPrefs = function () {
   if (editor.storage && // Cookies do not have enough available memory to hold large documents
     (curConfig.forceStorage ||
       (!curConfig.noStorageOnLoad &&
-        document.cookie.match(/(?:^|;\s*)store=prefsAndContent/))
+        document.cookie.match(/(?:^|;\s*)svgeditstorestore=prefsAndContent/))
     )
   ) {
     const name = 'svgedit-' + curConfig.canvasName;
@@ -471,6 +484,13 @@ editor.loadContentAndPrefs = function () {
 */
 editor.setConfig = function (opts, cfgCfg) {
   cfgCfg = cfgCfg || {};
+  /**
+   *
+   * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj
+   * @param {string} key
+   * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}
+   * @returns {undefined}
+   */
   function extendOrAdd (cfgObj, key, val) {
     if (cfgObj[key] && typeof cfgObj[key] === 'object') {
       $.extend(true, cfgObj[key], val);
@@ -660,11 +680,20 @@ editor.init = function () {
     goodLangs.push(this.value);
   });
 
+  /**
+   * Sets up current preferences based on defaults.
+   * @returns {undefined}
+   */
   function setupCurPrefs () {
     curPrefs = $.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set
     // Export updated prefs
     editor.curPrefs = curPrefs;
   }
+
+  /**
+   * Sets up current config based on defaults.
+   * @returns {undefined}
+   */
   function setupCurConfig () {
     curConfig = $.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set
 
@@ -757,7 +786,8 @@ editor.init = function () {
   const setIcon = editor.setIcon = function (elem, iconId, forcedSize) {
     const icon = (typeof iconId === 'string') ? $.getSvgIcon(iconId, true) : iconId.clone();
     if (!icon) {
-      console.log('NOTE: Icon image missing: ' + iconId);
+      // Todo: Investigate why this still occurs in some cases
+      console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console
       return;
     }
     $(elem).empty().append(icon);
@@ -775,6 +805,9 @@ editor.init = function () {
     const {langParam, langData} = await editor.putLocale(null, goodLangs, curConfig);
     await setLang(langParam, langData);
 
+    const {ok, cancel} = uiStrings.common;
+    jQueryPluginDBox($, {ok, cancel});
+
     try {
       await Promise.all(
         curConfig.extensions.map(async (extname) => {
@@ -800,7 +833,7 @@ editor.init = function () {
             });
             const {name = extName[1], init} = imported;
             const importLocale = getImportLocale({defaultLang: langParam, defaultName: name});
-            return editor.addExtension(name, (init && init.bind(editor)), importLocale);
+            return editor.addExtension(name, (init && init.bind(editor)), {$, importLocale});
           } catch (err) {
             // Todo: Add config to alert any errors
             console.log(err); // eslint-disable-line no-console
@@ -843,12 +876,17 @@ editor.init = function () {
       );
       svgCanvas.call('extensions_added');
     } catch (err) {
-      console.log(err);
+      // Todo: Report errors through the UI
+      console.log(err); // eslint-disable-line no-console
     }
   };
 
   const stateObj = {tool_scale: editor.tool_scale};
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const setFlyoutPositions = function () {
     $('.tools_flyout').each(function () {
       const shower = $('#' + this.id + '_show');
@@ -858,6 +896,9 @@ editor.init = function () {
     });
   };
 
+  /**
+  * @type {string}
+  */
   const uaPrefix = (function () {
     const regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
     const someScript = document.getElementsByTagName('script')[0];
@@ -875,6 +916,11 @@ editor.init = function () {
     return '';
   }());
 
+  /**
+  * @param {external:jQuery} elems
+  * @param {Float} scale
+  * @returns {undefined}
+  */
   const scaleElements = function (elems, scale) {
     // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused
     const sides = ['top', 'left', 'bottom', 'right'];
@@ -1309,7 +1355,7 @@ editor.init = function () {
       '.stroke_tool div div .svg_icon': 20,
       '#tools_bottom label .svg_icon': 18
     },
-    callback (icons) {
+    async callback (icons) {
       $('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
         $(this).parent().prepend(this);
       });
@@ -1374,16 +1420,17 @@ editor.init = function () {
           stylesheets.splice(idx, 1, ...$.loadingStylesheets);
         }
       }
-      loadStylesheets(stylesheets, {acceptErrors ({stylesheetURL, reject, resolve}) {
-        if ($.loadingStylesheets.includes(stylesheetURL)) {
-          reject(new Error(`Missing expected stylesheet: ${stylesheetURL}`));
-          return;
+      await loadStylesheets(stylesheets, {
+        acceptErrors ({stylesheetURL, reject, resolve}) {
+          if ($.loadingStylesheets.includes(stylesheetURL)) {
+            reject(new Error(`Missing expected stylesheet: ${stylesheetURL}`));
+            return;
+          }
+          resolve();
         }
-        resolve();
-      }}).then(() => {
-        $('#svg_container')[0].style.visibility = 'visible';
-        editor.runCallbacks();
       });
+      $('#svg_container')[0].style.visibility = 'visible';
+      await editor.runCallbacks();
     }
   });
 
@@ -1450,102 +1497,10 @@ editor.init = function () {
     }
   }());
 
-  // This sets up alternative dialog boxes. They mostly work the same way as
-  // their UI counterparts, expect instead of returning the result, a callback
-  // needs to be included that returns the result as its first parameter.
-  // In the future we may want to add additional types of dialog boxes, since
-  // they should be easy to handle this way.
-  (function () {
-    $('#dialog_container').draggable({
-      cancel: '#dialog_content, #dialog_buttons *',
-      containment: 'window'
-    }).css('position', 'absolute');
-    const box = $('#dialog_box'),
-      btnHolder = $('#dialog_buttons'),
-      dialogContent = $('#dialog_content'),
-      dbox = function (type, msg, callback, defaultVal, opts, changeCb, checkbox) {
-        dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>')
-          .toggleClass('prompt', (type === 'prompt'));
-        btnHolder.empty();
-
-        const ok = $('<input type="button" value="' + uiStrings.common.ok + '">').appendTo(btnHolder);
-
-        if (type !== 'alert') {
-          $('<input type="button" value="' + uiStrings.common.cancel + '">')
-            .appendTo(btnHolder)
-            .click(function () {
-              box.hide();
-              if (callback) {
-                callback(false); // eslint-disable-line standard/no-callback-literal
-              }
-            });
-        }
-
-        let ctrl, chkbx;
-        if (type === 'prompt') {
-          ctrl = $('<input type="text">').prependTo(btnHolder);
-          ctrl.val(defaultVal || '');
-          ctrl.bind('keydown', 'return', function () { ok.click(); });
-        } else if (type === 'select') {
-          const div = $('<div style="text-align:center;">');
-          ctrl = $('<select>').appendTo(div);
-          if (checkbox) {
-            const label = $('<label>').text(checkbox.label);
-            chkbx = $('<input type="checkbox">').appendTo(label);
-            chkbx.val(checkbox.value);
-            if (checkbox.tooltip) {
-              label.attr('title', checkbox.tooltip);
-            }
-            chkbx.prop('checked', Boolean(checkbox.checked));
-            div.append($('<div>').append(label));
-          }
-          $.each(opts || [], function (opt, val) {
-            if (typeof val === 'object') {
-              ctrl.append($('<option>').val(val.value).html(val.text));
-            } else {
-              ctrl.append($('<option>').html(val));
-            }
-          });
-          dialogContent.append(div);
-          if (defaultVal) {
-            ctrl.val(defaultVal);
-          }
-          if (changeCb) {
-            ctrl.bind('change', 'return', changeCb);
-          }
-          ctrl.bind('keydown', 'return', function () { ok.click(); });
-        } else if (type === 'process') {
-          ok.hide();
-        }
-
-        box.show();
-
-        ok.click(function () {
-          box.hide();
-          const resp = (type === 'prompt' || type === 'select') ? ctrl.val() : true;
-          if (callback) {
-            if (chkbx) {
-              callback(resp, chkbx.prop('checked'));
-            } else {
-              callback(resp);
-            }
-          }
-        }).focus();
-
-        if (type === 'prompt' || type === 'select') {
-          ctrl.focus();
-        }
-      };
-
-    $.alert = function (msg, cb) { dbox('alert', msg, cb); };
-    $.confirm = function (msg, cb) { dbox('confirm', msg, cb); };
-    $.process_cancel = function (msg, cb) { dbox('process', msg, cb); };
-    $.prompt = function (msg, txt, cb) { dbox('prompt', msg, cb, txt); };
-    $.select = function (msg, opts, cb, changeCb, txt, checkbox) {
-      dbox('select', msg, cb, txt, opts, changeCb, checkbox);
-    };
-  }());
-
+  /**
+  *
+  * @returns {undefined}
+  */
   const setSelectMode = function () {
     const curr = $('.tool_button_current');
     if (curr.length && curr[0].id !== 'tool_select') {
@@ -1577,8 +1532,12 @@ editor.init = function () {
     rIntervals.push(5 * i);
   }
 
-  // This function highlights the layer passed in (by fading out the other layers)
-  // if no layer is passed in, this function restores the other layers
+  /**
+   * This function highlights the layer passed in (by fading out the other layers).
+   * If no layer is passed in, this function restores the other layers
+   * @param {string} [layerNameToHighlight]
+   * @returns {undefined}
+  */
   const toggleHighlightLayer = function (layerNameToHighlight) {
     let i;
     const curNames = [], numLayers = svgCanvas.getCurrentDrawing().getNumLayers();
@@ -1587,18 +1546,22 @@ editor.init = function () {
     }
 
     if (layerNameToHighlight) {
-      for (i = 0; i < numLayers; ++i) {
-        if (curNames[i] !== layerNameToHighlight) {
-          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);
+      curNames.forEach((curName) => {
+        if (curName !== layerNameToHighlight) {
+          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);
         }
-      }
+      });
     } else {
-      for (i = 0; i < numLayers; ++i) {
-        svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);
-      }
+      curNames.forEach((curName) => {
+        svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);
+      });
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const populateLayers = function () {
     svgCanvas.clearSelection();
     const layerlist = $('#layerlist tbody').empty();
@@ -1653,6 +1616,12 @@ editor.init = function () {
 
   let editingsource = false;
   let origSource = '';
+
+  /**
+  * @param {Event} [e] Not used.
+  * @param {boolean} forSaving
+  * @returns {undefined}
+  */
   const showSourceEditor = function (e, forSaving) {
     if (editingsource) { return; }
 
@@ -1668,6 +1637,11 @@ editor.init = function () {
   let selectedElement = null;
   let multiselected = false;
 
+  /**
+  * @param {boolean} editmode
+  * @param {module:svgcanvas.SvgCanvas#event:selected} elems
+  * @returns {undefined}
+  */
   const togglePathEditMode = function (editmode, elems) {
     $('#path_node_panel').toggle(editmode);
     $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);
@@ -1738,7 +1712,7 @@ editor.init = function () {
         $.pref('save_notice_done', 'all');
       }
       if (done !== 'part') {
-        alert(note);
+        $.alert(note);
       }
     }
   };
@@ -1755,7 +1729,7 @@ editor.init = function () {
     exportWindow = window.open(Utils.blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one
 
     if (!exportWindow || exportWindow.closed) {
-      $.alert(uiStrings.notification.popupWindowBlocked);
+      /* await */ $.alert(uiStrings.notification.popupWindowBlocked);
       return;
     }
 
@@ -1777,6 +1751,10 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const operaRepaint = function () {
     // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
     if (!window.opera) {
@@ -1785,11 +1763,16 @@ editor.init = function () {
     $('<p/>').hide().appendTo('body').remove();
   };
 
+  /**
+   *
+   * @param {Element} opt
+   * @param {boolean} changeElem
+   * @returns {undefined}
+   */
   function setStrokeOpt (opt, changeElem) {
     const {id} = opt;
     const bits = id.split('_');
-    const pre = bits[0];
-    const val = bits[1];
+    const [pre, val] = bits;
 
     if (changeElem) {
       svgCanvas.setStrokeAttr('stroke-' + pre, val);
@@ -1874,6 +1857,12 @@ editor.init = function () {
     }
   };
 
+  /**
+   *
+   * @param {string} color
+   * @param {string} url
+   * @returns {undefined}
+   */
   function setBackground (color, url) {
     // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }
     $.pref('bkgd_color', color);
@@ -1883,23 +1872,37 @@ editor.init = function () {
     svgCanvas.setBackground(color, url);
   }
 
-  function promptImgURL ({cancelDeletes = false} = {}) {
+  /**
+   * @param {PlainObject} [opts={}]
+   * @param {boolean} [opts.cancelDeletes=false}]
+   * @returns {Promise} Resolves to `undefined`
+   */
+  async function promptImgURL ({cancelDeletes = false} = {}) {
     let curhref = svgCanvas.getHref(selectedElement);
     curhref = curhref.startsWith('data:') ? '' : curhref;
-    $.prompt(uiStrings.notification.enterNewImgURL, curhref, function (url) {
-      if (url) {
-        setImageURL(url);
-      } else if (cancelDeletes) {
-        svgCanvas.deleteSelectedElements();
-      }
-    });
+    const url = await $.prompt(uiStrings.notification.enterNewImgURL, curhref);
+    if (url) {
+      setImageURL(url);
+    } else if (cancelDeletes) {
+      svgCanvas.deleteSelectedElements();
+    }
   }
 
+  /**
+  * @param {Element} elem
+  * @returns {undefined}
+  */
   const setInputWidth = function (elem) {
     const w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
     $(elem).width(w);
   };
 
+  /**
+   *
+   * @param {HTMLDivElement} [scanvas]
+   * @param {Float} [zoom]
+   * @returns {undefined}
+   */
   function updateRulers (scanvas, zoom) {
     if (!zoom) { zoom = svgCanvas.getZoom(); }
     if (!scanvas) { scanvas = $('#svgcanvas'); }
@@ -2187,8 +2190,12 @@ editor.init = function () {
     operaRepaint();
   };
 
-  // Updates the toolbar (colors, opacity, etc) based on the selected element
-  // This function also updates the opacity and id elements that are in the context panel
+  /**
+  * Updates the toolbar (colors, opacity, etc) based on the selected element.
+  * This function also updates the opacity and id elements that are in the
+  * context panel.
+  * @returns {undefined}
+  */
   const updateToolbar = function () {
     let i, len;
     if (!Utils.isNullish(selectedElement)) {
@@ -2252,7 +2259,10 @@ editor.init = function () {
     updateToolButtonState();
   };
 
-  // updates the context panel tools based on the selected element
+  /**
+  * Updates the context panel tools based on the selected element.
+  * @returns {undefined}
+  */
   const updateContextPanel = function () {
     let elem = selectedElement;
     // If element has just been deleted, consider it null
@@ -2285,7 +2295,7 @@ editor.init = function () {
         if (elname === 'image' && svgCanvas.getMode() === 'image') {
           // Prompt for URL if not a data URL
           if (!svgCanvas.getHref(elem).startsWith('data:')) {
-            promptImgURL({cancelDeletes: true});
+            /* await */ promptImgURL({cancelDeletes: true});
           }
         }
         /* else if (elname == 'text') {
@@ -2471,6 +2481,10 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const updateWireFrame = function () {
     // Test support
     if (supportsNonSS) { return; }
@@ -2485,6 +2499,10 @@ editor.init = function () {
 
   let curContext = '';
 
+  /**
+  * @param {string} [title=svgCanvas.getDocumentTitle()]
+  * @returns {undefined}
+  */
   const updateTitle = function (title) {
     title = title || svgCanvas.getDocumentTitle();
     const newTitle = origTitle + (title ? ': ' + title : '');
@@ -2555,16 +2573,18 @@ editor.init = function () {
     // Only updating fields for single elements for now
     if (!multiselected) {
       switch (mode) {
-      case 'rotate':
+      case 'rotate': {
         const ang = svgCanvas.getRotationAngle(elem);
         $('#angle').val(ang);
         $('#tool_reorient').toggleClass('disabled', ang === 0);
         break;
 
       // TODO: Update values that change on move/resize, etc
-      // case 'select':
-      // case 'resize':
+      // } case 'select': {
+      // } case 'resize': {
       //   break;
+      // }
+      }
       }
     }
     svgCanvas.runExtensions('elementTransition', /** @type {module:svgcanvas.SvgCanvas#event:ext-elementTransition} */ {
@@ -2693,6 +2713,9 @@ editor.init = function () {
     zoomDone();
   };
 
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
   const changeZoom = function (ctl) {
     const zoomlevel = ctl.value / 100;
     if (zoomlevel < 0.001) {
@@ -2750,12 +2773,15 @@ editor.init = function () {
     } else {
       curContext = null;
     }
-    $('#cur_context_panel').toggle(!!context).html(linkStr);
+    $('#cur_context_panel').toggle(Boolean(context)).html(linkStr);
 
     updateTitle();
   };
 
-  // Makes sure the current selected paint is available to work with
+  /**
+  * Makes sure the current selected paint is available to work with.
+  * @returns {undefined}
+  */
   const prepPaints = function () {
     paintBox.fill.prep();
     paintBox.stroke.prep();
@@ -2763,6 +2789,10 @@ editor.init = function () {
 
   const flyoutFuncs = {};
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const setFlyoutTitles = function () {
     $('.tools_flyout').each(function () {
       const shower = $('#' + this.id + '_show');
@@ -2798,7 +2828,7 @@ editor.init = function () {
         .each(function () {
           // Get this button's options
           const idSel = '#' + this.getAttribute('id');
-          const [i, opts] = Object.entries(btnOpts).find(([i, {sel}]) => {
+          const [i, opts] = Object.entries(btnOpts).find(([_, {sel}]) => {
             return sel === idSel;
           });
 
@@ -2818,17 +2848,17 @@ editor.init = function () {
             if (ev.type === 'keydown') {
               const flyoutIsSelected = $(options.parent + '_show').hasClass('tool_button_current');
               const currentOperation = $(options.parent + '_show').attr('data-curopt');
-              Object.entries(holders[opts.parent]).some(([i, tool]) => {
+              Object.entries(holders[opts.parent]).some(([j, tool]) => {
                 if (tool.sel !== currentOperation) {
-                  return;
+                  return false;
                 }
                 if (!ev.shiftKey || !flyoutIsSelected) {
                   options = tool;
                 } else {
                   // If flyout is selected, allow shift key to iterate through subitems
-                  i = parseInt(i);
+                  j = parseInt(j);
                   // Use `allHolders` to include both extension `includeWith` and toolbarButtons
-                  options = allHolders[opts.parent][i + 1] ||
+                  options = allHolders[opts.parent][j + 1] ||
                     holders[opts.parent][0];
                 }
                 return true;
@@ -2849,6 +2879,7 @@ editor.init = function () {
             icon[0].setAttribute('height', shower.height());
             shower.children(':not(.flyout_arrow_horiz)').remove();
             shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode
+            return true;
           };
 
           $(this).mouseup(flyoutAction);
@@ -2856,6 +2887,7 @@ editor.init = function () {
           if (opts.key) {
             $(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);
           }
+          return true;
         });
 
       if (def) {
@@ -2889,6 +2921,7 @@ editor.init = function () {
           holder.data('shown_popop', true);
         }, time);
         evt.preventDefault();
+        return true;
       }).mouseup(function (evt) {
         clearTimeout(timer);
         const opt = $(this).attr('data-curopt');
@@ -2907,6 +2940,11 @@ editor.init = function () {
     setFlyoutPositions();
   };
 
+  /**
+  * @param {string} id
+  * @param {external:jQuery} child
+  * @returns {undefined}
+  */
   const makeFlyoutHolder = function (id, child) {
     const div = $('<div>', {
       class: 'tools_flyout',
@@ -2916,20 +2954,30 @@ editor.init = function () {
     return div;
   };
 
-  // TODO: Combine this with addDropDown or find other way to optimize
-  const addAltDropDown = function (elem, list, callback, opts) {
-    const button = $(elem);
+  /**
+  * @param {string} elemSel
+  * @param {string} listSel
+  * @param {external:jQuery.Function} callback
+  * @param {PlainObject} opts
+  * @param {boolean} opts.dropUp
+  * @param {boolean} opts.seticon
+  * @param {boolean} opts.multiclick
+  * @todo Combine this with `addDropDown` or find other way to optimize.
+  * @returns {undefined}
+  */
+  const addAltDropDown = function (elemSel, listSel, callback, opts) {
+    const button = $(elemSel);
     const {dropUp} = opts;
-    list = $(list);
+    const list = $(listSel);
     if (dropUp) {
-      $(elem).addClass('dropup');
+      $(elemSel).addClass('dropup');
     }
-    list.find('li').bind('mouseup', function () {
+    list.find('li').bind('mouseup', function (...args) {
       if (opts.seticon) {
         setIcon('#cur_' + button[0].id, $(this).children());
         $(this).addClass('current').siblings().removeClass('current');
       }
-      callback.apply(this, arguments);
+      callback.apply(this, ...args);
     });
 
     let onButton = false;
@@ -2980,11 +3028,11 @@ editor.init = function () {
    * @param {external:Window} win
    * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext
    * @listens module:svgcanvas.SvgCanvas#event:extension_added
-   * @returns {Promise} Resolves to `undefined`
+   * @returns {Promise|undefined} Resolves to `undefined`
    */
   const extAdded = async function (win, ext) {
     if (!ext) {
-      return;
+      return undefined;
     }
     let cbCalled = false;
     let resizeDone = false;
@@ -3003,6 +3051,11 @@ editor.init = function () {
       }
     }
 
+    /**
+     * Clear resize timer if present and if not previously performed,
+     *   perform an icon resize.
+     * @returns {undefined}
+     */
     function prepResize () {
       if (resizeTimer) {
         clearTimeout(resizeTimer);
@@ -3016,6 +3069,10 @@ editor.init = function () {
       }
     }
 
+    /**
+    *
+    * @returns {undefined}
+    */
     const runCallback = function () {
       if (ext.callback && !cbCalled) {
         cbCalled = true;
@@ -3376,7 +3433,7 @@ editor.init = function () {
       });
 
       if (svgicons) {
-        return new Promise((resolve, reject) => {
+        return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
           $.svgIcons(svgicons, {
             w: 24, h: 24,
             id_match: false,
@@ -3399,6 +3456,12 @@ editor.init = function () {
     return runCallback();
   };
 
+  /**
+  * @param {string} color
+  * @param {Float} opac
+  * @param {string} type
+  * @returns {module:jGraduate~Paint}
+  */
   const getPaint = function (color, opac, type) {
     // update the editor's fill paint
     const opts = {alpha: opac};
@@ -3436,7 +3499,7 @@ editor.init = function () {
       exportWindow = window.open('', exportWindowName); // A hack to get the window via JSON-able name without opening a new one
     }
     if (!exportWindow || exportWindow.closed) {
-      $.alert(uiStrings.notification.popupWindowBlocked);
+      /* await */ $.alert(uiStrings.notification.popupWindowBlocked);
       return;
     }
     exportWindow.location.href = data.output;
@@ -3490,14 +3553,23 @@ editor.init = function () {
 
   $('#image_save_opts input').val([$.pref('img_save')]);
 
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
   const changeRectRadius = function (ctl) {
     svgCanvas.setRectRadius(ctl.value);
   };
 
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
   const changeFontSize = function (ctl) {
     svgCanvas.setFontSize(ctl.value);
   };
 
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
   const changeStrokeWidth = function (ctl) {
     let val = ctl.value;
     if (val === 0 && selectedElement && ['line', 'polyline'].includes(selectedElement.nodeName)) {
@@ -3506,11 +3578,19 @@ editor.init = function () {
     svgCanvas.setStrokeWidth(val);
   };
 
+  /**
+  * @implements {module:jQuerySpinButton.ValueCallback}
+  */
   const changeRotationAngle = function (ctl) {
     svgCanvas.setRotationAngle(ctl.value);
     $('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);
   };
 
+  /**
+  * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+  * @param {string} [val=ctl.value]
+  * @returns {undefined}
+  */
   const changeOpacity = function (ctl, val) {
     if (Utils.isNullish(val)) { val = ctl.value; }
     $('#group_opacity').val(val);
@@ -3520,6 +3600,12 @@ editor.init = function () {
     svgCanvas.setOpacity(val / 100);
   };
 
+  /**
+  * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+  * @param {string} [val=ctl.value]
+  * @param {boolean} noUndo
+  * @returns {undefined}
+  */
   const changeBlur = function (ctl, val, noUndo) {
     if (Utils.isNullish(val)) { val = ctl.value; }
     $('#blur').val(val);
@@ -3550,9 +3636,13 @@ editor.init = function () {
 
   // fired when user wants to move elements to another layer
   let promptMoveLayerOnce = false;
-  $('#selLayerNames').change(function () {
+  $('#selLayerNames').change(async function () {
     const destLayer = this.options[this.selectedIndex].value;
     const confirmStr = uiStrings.notification.QmoveElemsToLayer.replace('%s', destLayer);
+    /**
+    * @param {boolean} ok
+    * @returns {undefined}
+    */
     const moveToLayer = function (ok) {
       if (!ok) { return; }
       promptMoveLayerOnce = true;
@@ -3564,7 +3654,11 @@ editor.init = function () {
       if (promptMoveLayerOnce) {
         moveToLayer(true);
       } else {
-        $.confirm(confirmStr, moveToLayer);
+        const ok = await $.confirm(confirmStr);
+        if (!ok) {
+          return;
+        }
+        moveToLayer(true);
       }
     }
   });
@@ -3603,8 +3697,8 @@ editor.init = function () {
     const valid = isValidUnit(attr, val, selectedElement);
 
     if (!valid) {
-      $.alert(uiStrings.notification.invalidAttrValGiven);
       this.value = selectedElement.getAttribute(attr);
+      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);
       return false;
     }
 
@@ -3633,6 +3727,7 @@ editor.init = function () {
       svgCanvas.changeSelectedAttribute(attr, val);
     }
     this.blur();
+    return true;
   });
 
   // Prevent selection of elements when shift-clicking
@@ -3676,7 +3771,7 @@ editor.init = function () {
       panning = false, keypan = false;
 
     $('#svgcanvas').bind('mousemove mouseup', function (evt) {
-      if (panning === false) { return; }
+      if (panning === false) { return true; }
 
       wArea.scrollLeft -= (evt.clientX - lastX);
       wArea.scrollTop -= (evt.clientY - lastY);
@@ -3693,6 +3788,7 @@ editor.init = function () {
         lastY = evt.clientY;
         return false;
       }
+      return true;
     });
 
     $(window).mouseup(function () {
@@ -3947,6 +4043,10 @@ editor.init = function () {
   // Unfocus text input when workarea is mousedowned.
   (function () {
     let inp;
+    /**
+    *
+    * @returns {undefined}
+    */
     const unfocus = function () {
       $(inp).blur();
     };
@@ -3965,60 +4065,100 @@ editor.init = function () {
     });
   }());
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickFHPath = function () {
     if (toolButtonClick('#tool_fhpath')) {
       svgCanvas.setMode('fhpath');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickLine = function () {
     if (toolButtonClick('#tool_line')) {
       svgCanvas.setMode('line');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickSquare = function () {
     if (toolButtonClick('#tool_square')) {
       svgCanvas.setMode('square');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickRect = function () {
     if (toolButtonClick('#tool_rect')) {
       svgCanvas.setMode('rect');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickFHRect = function () {
     if (toolButtonClick('#tool_fhrect')) {
       svgCanvas.setMode('fhrect');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickCircle = function () {
     if (toolButtonClick('#tool_circle')) {
       svgCanvas.setMode('circle');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickEllipse = function () {
     if (toolButtonClick('#tool_ellipse')) {
       svgCanvas.setMode('ellipse');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickFHEllipse = function () {
     if (toolButtonClick('#tool_fhellipse')) {
       svgCanvas.setMode('fhellipse');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickImage = function () {
     if (toolButtonClick('#tool_image')) {
       svgCanvas.setMode('image');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickZoom = function () {
     if (toolButtonClick('#tool_zoom')) {
       svgCanvas.setMode('zoom');
@@ -4026,6 +4166,10 @@ editor.init = function () {
     }
   };
 
+  /**
+  * @param {Float} multiplier
+  * @returns {undefined}
+  */
   const zoomImage = function (multiplier) {
     const res = svgCanvas.getResolution();
     multiplier = multiplier ? res.zoom * multiplier : 1;
@@ -4036,6 +4180,10 @@ editor.init = function () {
     updateCanvas(true);
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const dblclickZoom = function () {
     if (toolButtonClick('#tool_zoom')) {
       zoomImage();
@@ -4043,38 +4191,61 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickText = function () {
     if (toolButtonClick('#tool_text')) {
       svgCanvas.setMode('text');
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickPath = function () {
     if (toolButtonClick('#tool_path')) {
       svgCanvas.setMode('path');
     }
   };
 
-  // Delete is a contextual tool that only appears in the ribbon if
-  // an element has been selected
+  /**
+  * Delete is a contextual tool that only appears in the ribbon if
+  * an element has been selected.
+  * @returns {undefined}
+  */
   const deleteSelected = function () {
     if (!Utils.isNullish(selectedElement) || multiselected) {
       svgCanvas.deleteSelectedElements();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const cutSelected = function () {
     if (!Utils.isNullish(selectedElement) || multiselected) {
       svgCanvas.cutSelectedElements();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const copySelected = function () {
     if (!Utils.isNullish(selectedElement) || multiselected) {
       svgCanvas.copySelectedElements();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const pasteInCenter = function () {
     const zoom = svgCanvas.getZoom();
     const x = (workarea[0].scrollLeft + workarea.width() / 2) / zoom - svgCanvas.contentW;
@@ -4082,44 +4253,74 @@ editor.init = function () {
     svgCanvas.pasteElements('point', x, y);
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const moveToTopSelected = function () {
     if (!Utils.isNullish(selectedElement)) {
       svgCanvas.moveToTopSelectedElement();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const moveToBottomSelected = function () {
     if (!Utils.isNullish(selectedElement)) {
       svgCanvas.moveToBottomSelectedElement();
     }
   };
 
+  /**
+  * @param {"Up"|"Down"} dir
+  * @returns {undefined}
+  */
   const moveUpDownSelected = function (dir) {
     if (!Utils.isNullish(selectedElement)) {
       svgCanvas.moveUpDownSelected(dir);
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const convertToPath = function () {
     if (!Utils.isNullish(selectedElement)) {
       svgCanvas.convertToPath();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const reorientPath = function () {
     if (!Utils.isNullish(selectedElement)) {
       path.reorient();
     }
   };
 
-  const makeHyperlink = function () {
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
+  const makeHyperlink = async function () {
     if (!Utils.isNullish(selectedElement) || multiselected) {
-      $.prompt(uiStrings.notification.enterNewLinkURL, 'http://', function (url) {
-        if (url) { svgCanvas.makeHyperlink(url); }
-      });
+      const url = await $.prompt(uiStrings.notification.enterNewLinkURL, 'http://');
+      if (url) {
+        svgCanvas.makeHyperlink(url);
+      }
     }
   };
 
+  /**
+  * @param {Float} dx
+  * @param {Float} dy
+  * @returns {undefined}
+  */
   const moveSelected = function (dx, dy) {
     if (!Utils.isNullish(selectedElement) || multiselected) {
       if (curConfig.gridSnapping) {
@@ -4132,24 +4333,40 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const linkControlPoints = function () {
     $('#tool_node_link').toggleClass('push_button_pressed tool_button');
     const linked = $('#tool_node_link').hasClass('push_button_pressed');
     path.linkControlPoints(linked);
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clonePathNode = function () {
     if (path.getNodePoint()) {
       path.clonePathNode();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const deletePathNode = function () {
     if (path.getNodePoint()) {
       path.deletePathNode();
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const addSubPath = function () {
     const button = $('#tool_add_subpath');
     const sp = !button.hasClass('push_button_pressed');
@@ -4157,18 +4374,35 @@ editor.init = function () {
     path.addSubPath(sp);
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const opencloseSubPath = function () {
     path.opencloseSubPath();
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const selectNext = function () {
     svgCanvas.cycleElement(1);
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const selectPrev = function () {
     svgCanvas.cycleElement(0);
   };
 
+  /**
+  * @param {0|1} cw
+  * @param {Integer} step
+  * @returns {undefined}
+  */
   const rotateSelected = function (cw, step) {
     if (Utils.isNullish(selectedElement) || multiselected) { return; }
     if (!cw) { step *= -1; }
@@ -4179,36 +4413,49 @@ editor.init = function () {
 
   /**
    * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument
-   * @returns {undefined}
+   * @returns {Promise} Resolves to `undefined`
    */
-  const clickClear = function () {
+  const clickClear = async function () {
     const [x, y] = curConfig.dimensions;
-    $.confirm(uiStrings.notification.QwantToClear, function (ok) {
-      if (!ok) { return; }
-      setSelectMode();
-      svgCanvas.clear();
-      svgCanvas.setResolution(x, y);
-      updateCanvas(true);
-      zoomImage();
-      populateLayers();
-      updateContextPanel();
-      prepPaints();
-      svgCanvas.runExtensions('onNewDocument');
-    });
+    const ok = await $.confirm(uiStrings.notification.QwantToClear);
+    if (!ok) {
+      return;
+    }
+    setSelectMode();
+    svgCanvas.clear();
+    svgCanvas.setResolution(x, y);
+    updateCanvas(true);
+    zoomImage();
+    populateLayers();
+    updateContextPanel();
+    prepPaints();
+    svgCanvas.runExtensions('onNewDocument');
   };
 
+  /**
+  *
+  * @returns {false}
+  */
   const clickBold = function () {
     svgCanvas.setBold(!svgCanvas.getBold());
     updateContextPanel();
     return false;
   };
 
+  /**
+  *
+  * @returns {false}
+  */
   const clickItalic = function () {
     svgCanvas.setItalic(!svgCanvas.getItalic());
     updateContextPanel();
     return false;
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickSave = function () {
     // In the future, more options can be provided here
     const saveOpts = {
@@ -4219,59 +4466,17 @@ editor.init = function () {
   };
 
   let loadingURL;
-  const clickExport = function () {
-    $.select('Select an image type for export: ', [
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
+  const clickExport = async function () {
+    const imgType = await $.select('Select an image type for export: ', [
       // See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
       // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
       'PNG',
       'JPEG', 'BMP', 'WEBP', 'PDF'
-    ], async function (imgType) { // todo: replace hard-coded msg with uiStrings.notification.
-      if (!imgType) {
-        return;
-      }
-      // Open placeholder window (prevents popup)
-      let exportWindowName;
-      function openExportWindow () {
-        const str = uiStrings.notification.loadingImage;
-        if (curConfig.exportWindowType === 'new') {
-          editor.exportWindowCt++;
-        }
-        exportWindowName = curConfig.canvasName + editor.exportWindowCt;
-        let popHTML, popURL;
-        if (loadingURL) {
-          popURL = loadingURL;
-        } else {
-          popHTML = `<!DOCTYPE html><html>
-            <head>
-              <meta charset="utf-8">
-              <title>${str}</title>
-            </head>
-            <body><h1>${str}</h1></body>
-          <html>`;
-          if (typeof URL !== 'undefined' && URL.createObjectURL) {
-            const blob = new Blob([popHTML], {type: 'text/html'});
-            popURL = URL.createObjectURL(blob);
-          } else {
-            popURL = 'data:text/html;base64;charset=utf-8,' + Utils.encode64(popHTML);
-          }
-          loadingURL = popURL;
-        }
-        exportWindow = window.open(popURL, exportWindowName);
-      }
-      const chrome = isChrome();
-      if (imgType === 'PDF') {
-        if (!customExportPDF && !chrome) {
-          openExportWindow();
-        }
-        svgCanvas.exportPDF(exportWindowName);
-      } else {
-        if (!customExportImage) {
-          openExportWindow();
-        }
-        const quality = parseInt($('#image-slider').val()) / 100;
-        /* const results = */ await svgCanvas.rasterExport(imgType, quality, exportWindowName);
-      }
-    }, function () {
+    ], function () {
       const sel = $(this);
       if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
         if (!$('#image-slider').length) {
@@ -4283,20 +4488,81 @@ editor.init = function () {
       } else {
         $('#image-slider').parent().remove();
       }
-    });
+    }); // todo: replace hard-coded msg with uiStrings.notification.
+    if (!imgType) {
+      return;
+    }
+    // Open placeholder window (prevents popup)
+    let exportWindowName;
+
+    /**
+     *
+     * @returns {undefined}
+     */
+    function openExportWindow () {
+      const {loadingImage} = uiStrings.notification;
+      if (curConfig.exportWindowType === 'new') {
+        editor.exportWindowCt++;
+      }
+      exportWindowName = curConfig.canvasName + editor.exportWindowCt;
+      let popHTML, popURL;
+      if (loadingURL) {
+        popURL = loadingURL;
+      } else {
+        popHTML = `<!DOCTYPE html><html>
+          <head>
+            <meta charset="utf-8">
+            <title>${loadingImage}</title>
+          </head>
+          <body><h1>${loadingImage}</h1></body>
+        <html>`;
+        if (typeof URL !== 'undefined' && URL.createObjectURL) {
+          const blob = new Blob([popHTML], {type: 'text/html'});
+          popURL = URL.createObjectURL(blob);
+        } else {
+          popURL = 'data:text/html;base64;charset=utf-8,' + Utils.encode64(popHTML);
+        }
+        loadingURL = popURL;
+      }
+      exportWindow = window.open(popURL, exportWindowName);
+    }
+    const chrome = isChrome();
+    if (imgType === 'PDF') {
+      if (!customExportPDF && !chrome) {
+        openExportWindow();
+      }
+      svgCanvas.exportPDF(exportWindowName);
+    } else {
+      if (!customExportImage) {
+        openExportWindow();
+      }
+      const quality = parseInt($('#image-slider').val()) / 100;
+      /* const results = */ await svgCanvas.rasterExport(imgType, quality, exportWindowName);
+    }
   };
 
-  // by default, svgCanvas.open() is a no-op.
-  // it is up to an extension mechanism (opera widget, etc)
-  // to call setCustomHandlers() which will make it do something
+  /**
+   * By default, svgCanvas.open() is a no-op. It is up to an extension
+   *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which
+   *  will make it do something.
+   * @returns {undefined}
+   */
   const clickOpen = function () {
     svgCanvas.open();
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickImport = function () {
     /* */
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickUndo = function () {
     if (undoMgr.getUndoStackSize() > 0) {
       undoMgr.undo();
@@ -4304,6 +4570,10 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickRedo = function () {
     if (undoMgr.getRedoStackSize() > 0) {
       undoMgr.redo();
@@ -4311,6 +4581,10 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickGroup = function () {
     // group
     if (multiselected) {
@@ -4321,15 +4595,27 @@ editor.init = function () {
     }
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickClone = function () {
     svgCanvas.cloneSelectedElements(20, 20);
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickAlign = function () {
     const letter = this.id.replace('tool_align', '').charAt(0);
     svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const clickWireframe = function () {
     $('#tool_wireframe').toggleClass('push_button_pressed tool_button');
     workarea.toggleClass('wireframe');
@@ -4353,6 +4639,10 @@ editor.init = function () {
   let docprops = false;
   let preferences = false;
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const showDocProperties = function () {
     if (docprops) { return; }
     docprops = true;
@@ -4374,14 +4664,16 @@ editor.init = function () {
     $('#svg_docprops').show();
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const showPreferences = function () {
     if (preferences) { return; }
     preferences = true;
     $('#main_menu').hide();
 
     // Update background color with current one
-    const blocks = $('#bg_blocks div');
-    const curBg = 'cur_background';
     const canvasBg = curPrefs.bkgd_color;
     const url = $.pref('bkgd_url');
     blocks.each(function () {
@@ -4401,13 +4693,21 @@ editor.init = function () {
     $('#svg_prefs').show();
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const hideSourceEditor = function () {
     $('#svg_source_editor').hide();
     editingsource = false;
     $('#svg_source_textarea').blur();
   };
 
-  const saveSourceEditor = function () {
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
+  const saveSourceEditor = async function () {
     if (!editingsource) { return; }
 
     const saveChanges = function () {
@@ -4420,16 +4720,21 @@ editor.init = function () {
     };
 
     if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {
-      $.confirm(uiStrings.notification.QerrorsRevertToSource, function (ok) {
-        if (!ok) { return false; }
-        saveChanges();
-      });
-    } else {
+      const ok = await $.confirm(uiStrings.notification.QerrorsRevertToSource);
+      if (!ok) {
+        return;
+      }
       saveChanges();
+      return;
     }
+    saveChanges();
     setSelectMode();
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const hideDocProperties = function () {
     $('#svg_docprops').hide();
     $('#canvas_width,#canvas_height').removeAttr('disabled');
@@ -4438,11 +4743,19 @@ editor.init = function () {
     docprops = false;
   };
 
+  /**
+  *
+  * @returns {undefined}
+  */
   const hidePreferences = function () {
     $('#svg_prefs').hide();
     preferences = false;
   };
 
+  /**
+  *
+  * @returns {boolean} Whether there were problems saving the document properties
+  */
   const saveDocProperties = function () {
     // set title
     const newTitle = $('#canvas_title').val();
@@ -4454,23 +4767,23 @@ editor.init = function () {
     const height = $('#canvas_height'), h = height.val();
 
     if (w !== 'fit' && !isValidUnit('width', w)) {
-      $.alert(uiStrings.notification.invalidAttrValGiven);
       width.parent().addClass('error');
+      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);
       return false;
     }
 
     width.parent().removeClass('error');
 
     if (h !== 'fit' && !isValidUnit('height', h)) {
-      $.alert(uiStrings.notification.invalidAttrValGiven);
       height.parent().addClass('error');
+      /* await */ $.alert(uiStrings.notification.invalidAttrValGiven);
       return false;
     }
 
     height.parent().removeClass('error');
 
     if (!svgCanvas.setResolution(w, h)) {
-      $.alert(uiStrings.notification.noContentToFitTo);
+      /* await */ $.alert(uiStrings.notification.noContentToFitTo);
       return false;
     }
 
@@ -4478,6 +4791,7 @@ editor.init = function () {
     $.pref('img_save', $('#image_save_opts :checked').val());
     updateCanvas();
     hideDocProperties();
+    return true;
   };
 
   /**
@@ -4518,7 +4832,11 @@ editor.init = function () {
 
   let resetScrollPos = $.noop;
 
-  const cancelOverlays = function () {
+  /**
+  *
+  * @returns {Promise} Resolves to `undefined`
+  */
+  const cancelOverlays = async function () {
     $('#dialog_box').hide();
     if (!editingsource && !docprops && !preferences) {
       if (curContext) {
@@ -4529,9 +4847,10 @@ editor.init = function () {
 
     if (editingsource) {
       if (origSource !== $('#svg_source_textarea').val()) {
-        $.confirm(uiStrings.notification.QignoreSourceChanges, function (ok) {
-          if (ok) { hideSourceEditor(); }
-        });
+        const ok = await $.confirm(uiStrings.notification.QignoreSourceChanges);
+        if (ok) {
+          hideSourceEditor();
+        }
       } else {
         hideSourceEditor();
       }
@@ -4563,9 +4882,12 @@ editor.init = function () {
     editor.ready(function () {
       // TODO: Find better way to detect when to do this to minimize
       // flickering effect
-      setTimeout(function () {
-        resetScrollPos();
-      }, 500);
+      return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
+        setTimeout(function () {
+          resetScrollPos();
+          resolve();
+        }, 500);
+      });
     });
 
     workarea.scroll(function () {
@@ -4596,7 +4918,7 @@ editor.init = function () {
   });
 
   $('#url_notice').click(function () {
-    $.alert(this.title);
+    /* await */ $.alert(this.title);
   });
 
   $('#change_image_url').click(promptImgURL);
@@ -4645,8 +4967,12 @@ editor.init = function () {
     }
   }
 
-  // TODO: go back to the color boxes having white background-color and then setting
-  //  background-image to none.png (otherwise partially transparent gradients look weird)
+  /**
+  * @param {external:jQuery} elem
+  * @todo Go back to the color boxes having white background-color and then setting
+  *  background-image to none.png (otherwise partially transparent gradients look weird)
+  * @returns {undefined}
+  */
   const colorPicker = function (elem) {
     const picker = elem.attr('id') === 'stroke_color' ? 'stroke' : 'fill';
     // const opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));
@@ -4681,30 +5007,30 @@ editor.init = function () {
       );
   };
 
-  const PaintBox = function (container, type) {
-    let paintColor, paintOpacity;
-    const cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke'];
-    // set up gradients to be used for the buttons
-    const svgdocbox = new DOMParser().parseFromString(
-      `<svg xmlns="http://www.w3.org/2000/svg">
-        <rect width="16.5" height="16.5"
-          fill="#${cur.color}" opacity="${cur.opacity}"/>
-        <defs><linearGradient id="gradbox_"/></defs>
-      </svg>`,
-      'text/xml'
-    );
+  class PaintBox {
+    constructor (container, type) {
+      const cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke'];
+      // set up gradients to be used for the buttons
+      const svgdocbox = new DOMParser().parseFromString(
+        `<svg xmlns="http://www.w3.org/2000/svg">
+          <rect width="16.5" height="16.5"
+            fill="#${cur.color}" opacity="${cur.opacity}"/>
+          <defs><linearGradient id="gradbox_"/></defs>
+        </svg>`,
+        'text/xml'
+      );
 
-    let docElem = svgdocbox.documentElement;
-    docElem = $(container)[0].appendChild(document.importNode(docElem, true));
-    docElem.setAttribute('width', 16.5);
+      let docElem = svgdocbox.documentElement;
+      docElem = $(container)[0].appendChild(document.importNode(docElem, true));
+      docElem.setAttribute('width', 16.5);
 
-    this.rect = docElem.firstElementChild;
-    this.defs = docElem.getElementsByTagName('defs')[0];
-    this.grad = this.defs.firstElementChild;
-    this.paint = new $.jGraduate.Paint({solidColor: cur.color});
-    this.type = type;
-
-    this.setPaint = function (paint, apply) {
+      this.rect = docElem.firstElementChild;
+      this.defs = docElem.getElementsByTagName('defs')[0];
+      this.grad = this.defs.firstElementChild;
+      this.paint = new $.jGraduate.Paint({solidColor: cur.color});
+      this.type = type;
+    }
+    setPaint (paint, apply) {
       this.paint = paint;
 
       const ptype = paint.type;
@@ -4729,12 +5055,12 @@ editor.init = function () {
       this.rect.setAttribute('opacity', opac);
 
       if (apply) {
-        svgCanvas.setColor(this.type, paintColor, true);
-        svgCanvas.setPaintOpacity(this.type, paintOpacity, true);
+        svgCanvas.setColor(this.type, this._paintColor, true);
+        svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);
       }
-    };
+    }
 
-    this.update = function (apply) {
+    update (apply) {
       if (!selectedElement) { return; }
 
       const {type} = this;
@@ -4763,46 +5089,48 @@ editor.init = function () {
 
         if (gPaint === null) {
           // No common color, don't update anything
-          paintColor = null;
+          this._paintColor = null;
           return;
         }
-        paintColor = gPaint;
-        paintOpacity = 1;
+        this._paintColor = gPaint;
+        this._paintOpacity = 1;
         break;
-      } default:
-        paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
-        if (isNaN(paintOpacity)) {
-          paintOpacity = 1.0;
+      } default: {
+        this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+        if (isNaN(this._paintOpacity)) {
+          this._paintOpacity = 1.0;
         }
 
         const defColor = type === 'fill' ? 'black' : 'none';
-        paintColor = selectedElement.getAttribute(type) || defColor;
+        this._paintColor = selectedElement.getAttribute(type) || defColor;
+      }
       }
 
       if (apply) {
-        svgCanvas.setColor(type, paintColor, true);
-        svgCanvas.setPaintOpacity(type, paintOpacity, true);
+        svgCanvas.setColor(type, this._paintColor, true);
+        svgCanvas.setPaintOpacity(type, this._paintOpacity, true);
       }
 
-      paintOpacity *= 100;
+      this._paintOpacity *= 100;
 
-      const paint = getPaint(paintColor, paintOpacity, type);
+      const paint = getPaint(this._paintColor, this._paintOpacity, type);
       // update the rect inside #fill_color/#stroke_color
       this.setPaint(paint);
-    };
+    }
 
-    this.prep = function () {
+    prep () {
       const ptype = this.paint.type;
 
       switch (ptype) {
       case 'linearGradient':
-      case 'radialGradient':
+      case 'radialGradient': {
         const paint = new $.jGraduate.Paint({copy: this.paint});
-        svgCanvas.setPaint(type, paint);
+        svgCanvas.setPaint(this.type, paint);
         break;
       }
-    };
-  };
+      }
+    }
+  }
 
   paintBox.fill = new PaintBox('#fill_color', 'fill');
   paintBox.stroke = new PaintBox('#stroke_color', 'stroke');
@@ -4895,25 +5223,28 @@ editor.init = function () {
   });
 
   // ask for a layer name
-  $('#layer_new').click(function () {
+  $('#layer_new').click(async function () {
     let uniqName,
       i = svgCanvas.getCurrentDrawing().getNumLayers();
     do {
       uniqName = uiStrings.layers.layer + ' ' + (++i);
     } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
 
-    $.prompt(uiStrings.notification.enterUniqueLayerName, uniqName, function (newName) {
-      if (!newName) { return; }
-      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-        $.alert(uiStrings.notification.dupeLayerName);
-        return;
-      }
-      svgCanvas.createLayer(newName);
-      updateContextPanel();
-      populateLayers();
-    });
+    const newName = await $.prompt(uiStrings.notification.enterUniqueLayerName, uniqName);
+    if (!newName) { return; }
+    if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+      /* await */ $.alert(uiStrings.notification.dupeLayerName);
+      return;
+    }
+    svgCanvas.createLayer(newName);
+    updateContextPanel();
+    populateLayers();
   });
 
+  /**
+   *
+   * @returns {undefined}
+   */
   function deleteLayer () {
     if (svgCanvas.deleteCurrentLayer()) {
       updateContextPanel();
@@ -4926,21 +5257,28 @@ editor.init = function () {
     }
   }
 
-  function cloneLayer () {
+  /**
+   *
+   * @returns {undefined}
+   */
+  async function cloneLayer () {
     const name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
 
-    $.prompt(uiStrings.notification.enterUniqueLayerName, name, function (newName) {
-      if (!newName) { return; }
-      if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-        $.alert(uiStrings.notification.dupeLayerName);
-        return;
-      }
-      svgCanvas.cloneLayer(newName);
-      updateContextPanel();
-      populateLayers();
-    });
+    const newName = await $.prompt(uiStrings.notification.enterUniqueLayerName, name);
+    if (!newName) { return; }
+    if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+      /* await */ $.alert(uiStrings.notification.dupeLayerName);
+      return;
+    }
+    svgCanvas.cloneLayer(newName);
+    updateContextPanel();
+    populateLayers();
   }
 
+  /**
+   *
+   * @returns {undefined}
+   */
   function mergeLayer () {
     if ($('#layerlist tr.layersel').index() === svgCanvas.getCurrentDrawing().getNumLayers() - 1) {
       return;
@@ -4950,6 +5288,10 @@ editor.init = function () {
     populateLayers();
   }
 
+  /**
+   * @param {Integer} pos
+   * @returns {undefined}
+   */
   function moveLayer (pos) {
     const total = svgCanvas.getCurrentDrawing().getNumLayers();
 
@@ -4971,19 +5313,18 @@ editor.init = function () {
     moveLayer(1);
   });
 
-  $('#layer_rename').click(function () {
+  $('#layer_rename').click(async function () {
     // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
     const oldName = $('#layerlist tr.layersel td.layername').text();
-    $.prompt(uiStrings.notification.enterNewLayerName, '', function (newName) {
-      if (!newName) { return; }
-      if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-        $.alert(uiStrings.notification.layerHasThatName);
-        return;
-      }
+    const newName = await $.prompt(uiStrings.notification.enterNewLayerName, '');
+    if (!newName) { return; }
+    if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+      /* await */ $.alert(uiStrings.notification.layerHasThatName);
+      return;
+    }
 
-      svgCanvas.renameCurrentLayer(newName);
-      populateLayers();
-    });
+    svgCanvas.renameCurrentLayer(newName);
+    populateLayers();
   });
 
   const SIDEPANEL_MAXWIDTH = 300;
@@ -5004,6 +5345,10 @@ editor.init = function () {
     svgCanvas.runExtensions('workareaResized');
   };
 
+  /**
+  * @param {Event} evt
+  * @returns {undefined}
+  */
   const resizeSidePanel = function (evt) {
     if (!allowmove) { return; }
     if (sidedrag === -1) { return; }
@@ -5069,6 +5414,9 @@ editor.init = function () {
 
   $(window).bind('load resize', centerCanvas);
 
+  /**
+   * @implements {module:jQuerySpinButton.StepCallback}
+   */
   function stepFontSize (elem, step) {
     const origVal = Number(elem.value);
     const sugVal = origVal + step;
@@ -5090,6 +5438,9 @@ editor.init = function () {
     return sugVal;
   }
 
+  /**
+   * @implements {module:jQuerySpinButton.StepCallback}
+   */
   function stepZoom (elem, step) {
     const origVal = Number(elem.value);
     if (origVal === 0) { return 100; }
@@ -5368,6 +5719,7 @@ editor.init = function () {
               }
             }
           }
+          return true;
         });
 
         // Setup flyouts
@@ -5568,10 +5920,17 @@ editor.init = function () {
     }
   );
 
+  /**
+  * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}
+  * @param {"dupe"|"delete"|"merge_down"|"merge_all"} action
+  * @param {external:jQuery} el
+  * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos
+  * @returns {undefined}
+  */
   const lmenuFunc = function (action, el, pos) {
     switch (action) {
     case 'dupe':
-      cloneLayer();
+      /* await */ cloneLayer();
       break;
     case 'delete':
       deleteLayer();
@@ -5611,6 +5970,9 @@ editor.init = function () {
   $('#cmenu_canvas li').disableContextMenu();
   canvMenu.enableContextMenuItems('#delete,#cut,#copy');
 
+  /**
+   * @returns {undefined}
+   */
   function enableOrDisableClipboard () {
     let svgeditClipboard;
     try {
@@ -5653,34 +6015,43 @@ editor.init = function () {
   };
 
   /**
-  * @callback module:SVGEditor.OpenPrepCallback
-  * @param {boolean} noChanges
-  * @returns {undefined}
+  * @returns {Promise} Resolves to boolean indicating `true` if there were no changes
+  *  and `false` after the user confirms.
   */
-  /**
-  * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback
-  * @returns {undefined}
-  */
-  editor.openPrep = function (func) {
+  editor.openPrep = function () {
     $('#main_menu').hide();
     if (undoMgr.getUndoStackSize() === 0) {
-      func(true);
-    } else {
-      $.confirm(uiStrings.notification.QwantToOpen, func);
+      return true;
     }
+    return $.confirm(uiStrings.notification.QwantToOpen);
   };
 
+  /**
+   *
+   * @param {Event} e
+   * @returns {undefined}
+   */
   function onDragEnter (e) {
     e.stopPropagation();
     e.preventDefault();
     // and indicator should be displayed here, such as "drop files here"
   }
 
+  /**
+   *
+   * @param {Event} e
+   * @returns {undefined}
+   */
   function onDragOver (e) {
     e.stopPropagation();
     e.preventDefault();
   }
 
+  /**
+   *
+   * @param {Event} e
+   * @returns {undefined}
+   */
   function onDragLeave (e) {
     e.stopPropagation();
     e.preventDefault();
@@ -5691,6 +6062,10 @@ editor.init = function () {
   // and provide a file input to click. When that change event fires, it will
   // get the text contents of the file and send it to the canvas
   if (window.FileReader) {
+    /**
+    * @param {Event} e
+    * @returns {undefined}
+    */
     const importImage = function (e) {
       $.process_cancel(uiStrings.notification.loadingImage);
       e.stopPropagation();
@@ -5706,62 +6081,68 @@ editor.init = function () {
 
       }
       else */
-      if (file.type.includes('image')) {
-        // Detected an image
-        // svg handling
-        let reader;
-        if (file.type.includes('svg')) {
-          reader = new FileReader();
-          reader.onloadend = function (ev) {
-            const newElement = svgCanvas.importSvgString(ev.target.result, true);
-            svgCanvas.ungroupSelectedElement();
-            svgCanvas.ungroupSelectedElement();
-            svgCanvas.groupSelectedElements();
+      if (!file.type.includes('image')) {
+        return;
+      }
+      // Detected an image
+      // svg handling
+      let reader;
+      if (file.type.includes('svg')) {
+        reader = new FileReader();
+        reader.onloadend = function (ev) {
+          const newElement = svgCanvas.importSvgString(ev.target.result, true);
+          svgCanvas.ungroupSelectedElement();
+          svgCanvas.ungroupSelectedElement();
+          svgCanvas.groupSelectedElements();
+          svgCanvas.alignSelectedElements('m', 'page');
+          svgCanvas.alignSelectedElements('c', 'page');
+          // highlight imported element, otherwise we get strange empty selectbox
+          svgCanvas.selectOnly([newElement]);
+          $('#dialog_box').hide();
+        };
+        reader.readAsText(file);
+      } else {
+        // bitmap handling
+        reader = new FileReader();
+        reader.onloadend = function ({target: {result}}) {
+          /**
+          * Insert the new image until we know its dimensions
+          * @param {Float} width
+          * @param {Float} height
+          * @returns {undefined}
+          */
+          const insertNewImage = function (width, height) {
+            const newImage = svgCanvas.addSVGElementFromJson({
+              element: 'image',
+              attr: {
+                x: 0,
+                y: 0,
+                width,
+                height,
+                id: svgCanvas.getNextId(),
+                style: 'pointer-events:inherit'
+              }
+            });
+            svgCanvas.setHref(newImage, result);
+            svgCanvas.selectOnly([newImage]);
             svgCanvas.alignSelectedElements('m', 'page');
             svgCanvas.alignSelectedElements('c', 'page');
-            // highlight imported element, otherwise we get strange empty selectbox
-            svgCanvas.selectOnly([newElement]);
+            updateContextPanel();
             $('#dialog_box').hide();
           };
-          reader.readAsText(file);
-        } else {
-          // bitmap handling
-          reader = new FileReader();
-          reader.onloadend = function ({target: {result}}) {
-            // let's insert the new image until we know its dimensions
-            const insertNewImage = function (width, height) {
-              const newImage = svgCanvas.addSVGElementFromJson({
-                element: 'image',
-                attr: {
-                  x: 0,
-                  y: 0,
-                  width,
-                  height,
-                  id: svgCanvas.getNextId(),
-                  style: 'pointer-events:inherit'
-                }
-              });
-              svgCanvas.setHref(newImage, result);
-              svgCanvas.selectOnly([newImage]);
-              svgCanvas.alignSelectedElements('m', 'page');
-              svgCanvas.alignSelectedElements('c', 'page');
-              updateContextPanel();
-              $('#dialog_box').hide();
-            };
-            // create dummy img so we know the default dimensions
-            let imgWidth = 100;
-            let imgHeight = 100;
-            const img = new Image();
-            img.style.opacity = 0;
-            img.onload = function () {
-              imgWidth = img.offsetWidth || img.naturalWidth || img.width;
-              imgHeight = img.offsetHeight || img.naturalHeight || img.height;
-              insertNewImage(imgWidth, imgHeight);
-            };
-            img.src = result;
+          // create dummy img so we know the default dimensions
+          let imgWidth = 100;
+          let imgHeight = 100;
+          const img = new Image();
+          img.style.opacity = 0;
+          img.onload = function () {
+            imgWidth = img.offsetWidth || img.naturalWidth || img.width;
+            imgHeight = img.offsetHeight || img.naturalHeight || img.height;
+            insertNewImage(imgWidth, imgHeight);
           };
-          reader.readAsDataURL(file);
-        }
+          img.src = result;
+        };
+        reader.readAsDataURL(file);
       }
     };
 
@@ -5770,21 +6151,19 @@ editor.init = function () {
     workarea[0].addEventListener('dragleave', onDragLeave);
     workarea[0].addEventListener('drop', importImage);
 
-    const open = $('<input type="file">').click(function () {
-      const f = this; // eslint-disable-line consistent-this
-      editor.openPrep(function (ok) {
-        if (!ok) { return; }
-        svgCanvas.clear();
-        if (f.files.length === 1) {
-          $.process_cancel(uiStrings.notification.loadingImage);
-          const reader = new FileReader();
-          reader.onloadend = function (e) {
-            loadSvgString(e.target.result);
-            updateCanvas();
-          };
-          reader.readAsText(f.files[0]);
-        }
-      });
+    const open = $('<input type="file">').click(async function () {
+      const ok = await editor.openPrep();
+      if (!ok) { return; }
+      svgCanvas.clear();
+      if (this.files.length === 1) {
+        $.process_cancel(uiStrings.notification.loadingImage);
+        const reader = new FileReader();
+        reader.onloadend = async function (e) {
+          await loadSvgString(e.target.result);
+          updateCanvas();
+        };
+        reader.readAsText(this.files[0]);
+      }
     });
     $('#tool_open').show().prepend(open);
 
@@ -5830,20 +6209,24 @@ editor.init = function () {
 
     // In case extensions loaded before the locale, now we execute a callback on them
     if (extsPreLang.length) {
-      while (extsPreLang.length) {
-        const ext = extsPreLang.shift();
+      await Promise.all(extsPreLang.map((ext) => {
         loadedExtensionNames.push(ext.name);
-        await ext.langReady({
+        return ext.langReady({
           lang,
           uiStrings,
           importLocale: getImportLocale({defaultLang: lang, defaultName: ext.name})
         });
-      }
+      }));
+      extsPreLang.length = 0;
     } else {
       loadedExtensionNames.forEach((loadedExtensionName) => {
-        svgCanvas.runExtensions('langReady', /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */ {
-          lang, uiStrings, importLocale: getImportLocale({defaultLang: lang, defaultName: loadedExtensionName})
-        });
+        this.runExtension(
+          loadedExtensionName,
+          'langReady',
+          /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */ {
+            lang, uiStrings, importLocale: getImportLocale({defaultLang: lang, defaultName: loadedExtensionName})
+          }
+        );
       });
     }
     svgCanvas.runExtensions('langChanged', /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */ lang);
@@ -5915,41 +6298,61 @@ editor.init = function () {
 
 /**
 * @callback module:SVGEditor.ReadyCallback
-* @returns {undefined}
+* @returns {Promise|undefined}
 */
 /**
 * Queues a callback to be invoked when the editor is ready (or
 *   to be invoked immediately if it is already ready--i.e.,
-*   if `svgEditor.runCallbacks` has been run).
+*   if `runCallbacks` has been run).
 * @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke
-* @returns {undefined}
+* @returns {Promise} Resolves when all callbacks, including the supplied have resolved
 */
-editor.ready = function (cb) {
-  if (!isReady) {
-    callbacks.push(cb);
-  } else {
-    cb();
-  }
+editor.ready = function (cb) { // eslint-disable-line promise/prefer-await-to-callbacks
+  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
+    if (isReady) {
+      resolve(cb()); // eslint-disable-line callback-return, promise/prefer-await-to-callbacks
+      return;
+    }
+    callbacks.push([cb, resolve, reject]);
+  });
 };
 
 /**
 * Invokes the callbacks previous set by `svgEditor.ready`
-* @returns {undefined}
+* @returns {Promise} Resolves to `undefined` if all callbacks succeeded and rejects otherwise
 */
-editor.runCallbacks = function () {
-  callbacks.forEach((cb) => {
-    cb();
+editor.runCallbacks = async function () {
+  try {
+    await Promise.all(callbacks.map(([cb]) => {
+      return cb(); // eslint-disable-line promise/prefer-await-to-callbacks
+    }));
+  } catch (err) {
+    callbacks.forEach(([, , reject]) => {
+      reject();
+    });
+    throw err;
+  }
+  callbacks.forEach(([, resolve]) => {
+    resolve();
   });
   isReady = true;
 };
 
 /**
 * @param {string} str The SVG string to load
-* @returns {undefined}
+* @param {PlainObject} [opts={}]
+* @param {boolean} [opts.noAlert=false] Option to avoid alert to user and instead get rejected promise
+* @returns {Promise}
 */
-editor.loadFromString = function (str) {
-  editor.ready(function () {
-    loadSvgString(str);
+editor.loadFromString = function (str, {noAlert} = {}) {
+  editor.ready(async function () {
+    try {
+      await loadSvgString(str, {noAlert});
+    } catch (err) {
+      if (noAlert) {
+        throw err;
+      }
+    }
   });
 };
 
@@ -5972,46 +6375,53 @@ editor.disableUI = function (featList) {
  */
 /**
 * @param {string} url URL from which to load an SVG string via Ajax
-* @param {PlainObject} [opts] May contain properties: `cache`, `callback`
-* @param {boolean} opts.cache
-* @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success
-* @returns {undefined}
+* @param {PlainObject} [opts={}] May contain properties: `cache`, `callback`
+* @param {boolean} [opts.cache]
+* @param {boolean} [opts.noAlert]
+* @returns {Promise} Resolves to `undefined` or rejects upon bad loading of
+*   the SVG (or upon failure to parse the loaded string) when `noAlert` is
+*   enabled
 */
-editor.loadFromURL = function (url, opts) {
-  if (!opts) { opts = {}; }
-
-  const {cache, callback: cb} = opts;
-
-  editor.ready(function () {
-    $.ajax({
-      url,
-      dataType: 'text',
-      cache: Boolean(cache),
-      beforeSend () {
-        $.process_cancel(uiStrings.notification.loadingImage);
-      },
-      success (str) {
-        loadSvgString(str, cb);
-      },
-      error (xhr, stat, err) {
-        if (xhr.status !== 404 && xhr.responseText) {
-          loadSvgString(xhr.responseText, cb);
-        } else {
-          $.alert(uiStrings.notification.URLloadFail + ': \n' + err, cb);
+editor.loadFromURL = function (url, {cache, noAlert} = {}) {
+  return editor.ready(function () {
+    return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
+      $.ajax({
+        url,
+        dataType: 'text',
+        cache: Boolean(cache),
+        beforeSend () {
+          $.process_cancel(uiStrings.notification.loadingImage);
+        },
+        success (str) {
+          resolve(loadSvgString(str, {noAlert}));
+        },
+        error (xhr, stat, err) {
+          if (xhr.status !== 404 && xhr.responseText) {
+            resolve(loadSvgString(xhr.responseText, {noAlert}));
+            return;
+          }
+          if (noAlert) {
+            reject(new Error('URLLoadFail'));
+            return;
+          }
+          $.alert(uiStrings.notification.URLLoadFail + ': \n' + err);
+          resolve();
+        },
+        complete () {
+          $('#dialog_box').hide();
         }
-      },
-      complete () {
-        $('#dialog_box').hide();
-      }
+      });
     });
   });
 };
 
 /**
 * @param {string} str The Data URI to base64-decode (if relevant) and load
-* @returns {undefined}
+* @param {PlainObject} [opts={}]
+* @param {boolean} [opts.noAlert]
+* @returns {Promise} Resolves to `undefined` and rejects if loading SVG string fails and `noAlert` is enabled
 */
-editor.loadFromDataURI = function (str) {
+editor.loadFromDataURI = function (str, {noAlert} = {}) {
   editor.ready(function () {
     let base64 = false;
     let pre = str.match(/^data:image\/svg\+xml;base64,/);
@@ -6024,7 +6434,7 @@ editor.loadFromDataURI = function (str) {
       pre = pre[0];
     }
     const src = str.slice(pre.length);
-    loadSvgString(base64 ? Utils.decode64(src) : decodeURIComponent(src));
+    return loadSvgString(base64 ? Utils.decode64(src) : decodeURIComponent(src), {noAlert});
   });
 };
 
@@ -6076,9 +6486,15 @@ window.addEventListener('message', messageListener);
 
 // Run init once DOM is loaded
 // jQuery(editor.init);
-Promise.resolve().then(() => {
+
+(async () => {
+try {
   // We wait a micro-task to let the svgEditor variable be defined for module checks
+  await Promise.resolve();
   editor.init();
-});
+} catch (err) {
+  console.error(err); // eslint-disable-line no-console
+}
+})();
 
 export default editor;
diff --git a/editor/svgcanvas.js b/editor/svgcanvas.js
index 0ea2ba86..46e09b62 100644
--- a/editor/svgcanvas.js
+++ b/editor/svgcanvas.js
@@ -19,8 +19,14 @@
 
 import './svgpathseg.js';
 import jQueryPluginSVG from './jQuery.attr.js'; // Needed for SVG attribute setting and array form with `attr`
-
-import * as draw from './draw.js';
+import jQueryPluginDBox from './dbox.js';
+import * as draw from './draw.js'; // eslint-disable-line import/no-duplicates
+import { // eslint-disable-line no-duplicate-imports
+  identifyLayers, createLayer, cloneLayer, deleteCurrentLayer,
+  setCurrentLayer, renameCurrentLayer, setCurrentLayerPosition,
+  setLayerVisibility, moveSelectedToLayer, mergeLayer, mergeAllLayers,
+  leaveContext, setContext
+} from './draw.js'; // eslint-disable-line import/no-duplicates
 import * as pathModule from './path.js';
 import {sanitizeSvg} from './sanitize.js';
 import {getReverseNS, NS} from './namespaces.js';
@@ -65,7 +71,7 @@ import {
   init as selectInit
 } from './select.js';
 
-const $ = jQueryPluginSVG(jQuery);
+let $ = jQueryPluginSVG(jQuery);
 const {
   MoveElementCommand, InsertElementCommand, RemoveElementCommand,
   ChangeElementCommand, BatchCommand, UndoManager, HistoryEventTypes
@@ -976,6 +982,9 @@ let
   // Canvas point for the most recent right click
   lastClickPoint = null;
 
+this.runExtension = function (name, action, vars) {
+  return this.runExtensions(action, vars, false, (n) => n === name);
+};
 /**
 * @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus
 * @tutorial ExtensionDocs
@@ -983,6 +992,12 @@ let
 /**
 * @callback module:svgcanvas.ExtensionVarBuilder
 * @param {string} name The name of the extension
+* @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}
+*/
+/**
+* @callback module:svgcanvas.ExtensionNameFilter
+* @param {string} name
+* @returns {boolean}
 */
 /**
 * @todo Consider: Should this return an array by default, so extension results aren't overwritten?
@@ -991,11 +1006,15 @@ let
 * @param {"mouseDown"|"mouseMove"|"mouseUp"|"zoomChanged"|"IDsUpdated"|"canvasUpdated"|"toolButtonStateUpdate"|"selectedChanged"|"elementTransition"|"elementChanged"|"langReady"|"langChanged"|"addLangData"|"onNewDocument"|"workareaResized"} action
 * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]
 * @param {boolean} [returnArray]
+* @param {module:svgcanvas.ExtensionNameFilter} nameFilter
 * @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.
 */
-const runExtensions = this.runExtensions = function (action, vars, returnArray) {
+const runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {
   let result = returnArray ? [] : false;
   $.each(extensions, function (name, ext) {
+    if (nameFilter && !nameFilter(name)) {
+      return;
+    }
     if (ext && action in ext) {
       if (typeof vars === 'function') {
         vars = vars(name); // ext, action
@@ -1126,44 +1145,45 @@ const runExtensions = this.runExtensions = function (action, vars, returnArray)
 * @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data
 * @param {module:SVGEditor~ImportLocale} importLocale
 * @fires module:svgcanvas.SvgCanvas#event:extension_added
-* @throws {TypeError} If `extInitFunc` is not a function
+* @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`
+*   if extension of supplied name already exists
 * @returns {Promise} Resolves to `undefined`
 */
 this.addExtension = async function (name, extInitFunc, importLocale) {
   if (typeof extInitFunc !== 'function') {
     throw new TypeError('Function argument expected for `svgcanvas.addExtension`');
   }
-  if (!(name in extensions)) {
-    // Provide private vars/funcs here. Is there a better way to do this?
-    /**
-     * @typedef {module:svgcanvas.PrivateMethods} module:svgcanvas.ExtensionArgumentObject
-     * @property {SVGSVGElement} svgroot See {@link module:svgcanvas~svgroot}
-     * @property {SVGSVGElement} svgcontent See {@link module:svgcanvas~svgcontent}
-     * @property {!(string|Integer)} nonce See {@link module:draw.Drawing#getNonce}
-     * @property {module:select.SelectorManager} selectorManager
-     * @property {module:SVGEditor~ImportLocale} importLocale
-     */
-    /**
-     * @type {module:svgcanvas.ExtensionArgumentObject}
-     * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties
-     */
-    const argObj = $.extend(canvas.getPrivateMethods(), {
-      importLocale,
-      svgroot,
-      svgcontent,
-      nonce: getCurrentDrawing().getNonce(),
-      selectorManager
-    });
-    const extObj = await extInitFunc(argObj);
-    if (extObj) {
-      extObj.name = name;
-    }
-
-    extensions[name] = extObj;
-    return call('extension_added', extObj);
+  if (name in extensions) {
+    throw new Error('Cannot add extension "' + name + '", an extension by that name already exists.');
   }
-  console.log('Cannot add extension "' + name + '", an extension by that name already exists.');
-  return undefined;
+  // Provide private vars/funcs here. Is there a better way to do this?
+  /**
+   * @typedef {module:svgcanvas.PrivateMethods} module:svgcanvas.ExtensionArgumentObject
+   * @property {SVGSVGElement} svgroot See {@link module:svgcanvas~svgroot}
+   * @property {SVGSVGElement} svgcontent See {@link module:svgcanvas~svgcontent}
+   * @property {!(string|Integer)} nonce See {@link module:draw.Drawing#getNonce}
+   * @property {module:select.SelectorManager} selectorManager
+   * @property {module:SVGEditor~ImportLocale} importLocale
+   */
+  /**
+   * @type {module:svgcanvas.ExtensionArgumentObject}
+   * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties
+   */
+  const argObj = $.extend(canvas.getPrivateMethods(), {
+    $,
+    importLocale,
+    svgroot,
+    svgcontent,
+    nonce: getCurrentDrawing().getNonce(),
+    selectorManager
+  });
+  const extObj = await extInitFunc(argObj);
+  if (extObj) {
+    extObj.name = name;
+  }
+
+  extensions[name] = extObj;
+  return call('extension_added', extObj);
 };
 
 /**
@@ -1188,9 +1208,9 @@ const getIntersectionList = this.getIntersectionList = function (rect) {
     rubberBBox = rubberBox.getBBox();
     const bb = svgcontent.createSVGRect();
 
-    for (const o in rubberBBox) {
+    ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach((o) => {
       bb[o] = rubberBBox[o] / currentZoom;
-    }
+    });
     rubberBBox = bb;
   } else {
     rubberBBox = svgcontent.createSVGRect();
@@ -1550,7 +1570,7 @@ const recalculateAllSelectedDimensions = this.recalculateAllSelectedDimensions =
  * @returns {undefined}
  */
 const logMatrix = function (m) {
-  console.log([m.a, m.b, m.c, m.d, m.e, m.f]);
+  console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console
 };
 
 // Root Current Transformation Matrix in user units
@@ -1757,7 +1777,7 @@ const mouseDown = function (evt) {
   }
 
   startTransform = mouseTarget.getAttribute('transform');
-  let i, strokeW;
+
   const tlist = getTransformList(mouseTarget);
   switch (currentMode) {
   case 'select':
@@ -1783,7 +1803,7 @@ const mouseDown = function (evt) {
       if (!rightClick) {
         // insert a dummy transform so if the element(s) are moved it will have
         // a transform to use for its translate
-        for (i = 0; i < selectedElements.length; ++i) {
+        for (let i = 0; i < selectedElements.length; ++i) {
           if (isNullish(selectedElements[i])) { continue; }
           const slist = getTransformList(selectedElements[i]);
           if (slist.numberOfItems) {
@@ -1876,7 +1896,7 @@ const mouseDown = function (evt) {
 
         const all = mouseTarget.getElementsByTagName('*'),
           len = all.length;
-        for (i = 0; i < len; i++) {
+        for (let i = 0; i < len; i++) {
           if (!all[i].style) { // mathML
             continue;
           }
@@ -1950,9 +1970,9 @@ const mouseDown = function (evt) {
       }
     });
     break;
-  case 'line':
+  case 'line': {
     started = true;
-    strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
+    const strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
     addSVGElementFromJson({
       element: 'line',
       curStyles: true,
@@ -1974,7 +1994,7 @@ const mouseDown = function (evt) {
       }
     });
     break;
-  case 'circle':
+  } case 'circle':
     started = true;
     addSVGElementFromJson({
       element: 'circle',
@@ -2421,8 +2441,8 @@ const mouseMove = function (evt) {
     start = {x: end.x, y: end.y};
     break;
   // update path stretch line coordinates
-} case 'path': { // eslint-disable-line no-empty
-} // fall through
+} case 'path':
+  // fall through
   case 'pathedit': {
     x *= currentZoom;
     y *= currentZoom;
@@ -2623,14 +2643,14 @@ const mouseUp = function (evt) {
         const elem = selectedElements[0];
         if (elem) {
           elem.removeAttribute('style');
-          walkTree(elem, function (elem) {
-            elem.removeAttribute('style');
+          walkTree(elem, function (el) {
+            el.removeAttribute('style');
           });
         }
       }
     }
     return;
-  case 'zoom':
+  case 'zoom': {
     if (!isNullish(rubberBox)) {
       rubberBox.setAttribute('display', 'none');
     }
@@ -2643,7 +2663,7 @@ const mouseUp = function (evt) {
       factor
     });
     return;
-  case 'fhpath':
+  } case 'fhpath': {
     // Check that the path contains at least 2 points; a degenerate one-point path
     // causes problems.
     // Webkit ignores how we set the points attribute with commas and uses space
@@ -2664,7 +2684,7 @@ const mouseUp = function (evt) {
       element = pathActions.smoothPolylineIntoPath(element);
     }
     break;
-  case 'line':
+  } case 'line':
     attrs = $(element).attr(['x1', 'x2', 'y1', 'y2']);
     keep = (attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2);
     break;
@@ -2724,7 +2744,7 @@ const mouseUp = function (evt) {
     selectOnly([element]);
     textActions.start(element);
     break;
-  case 'path':
+  case 'path': {
     // set element to null here so that it is not removed nor finalized
     element = null;
     // continue to be set to true so that mouseMove happens
@@ -2734,7 +2754,7 @@ const mouseUp = function (evt) {
     ({element} = res);
     ({keep} = res);
     break;
-  case 'pathedit':
+  } case 'pathedit':
     keep = true;
     element = null;
     pathActions.mouseUp(evt);
@@ -2744,7 +2764,7 @@ const mouseUp = function (evt) {
     element = null;
     textActions.mouseUp(evt, mouseX, mouseY);
     break;
-  case 'rotate':
+  case 'rotate': {
     keep = true;
     element = null;
     currentMode = 'select';
@@ -2756,7 +2776,7 @@ const mouseUp = function (evt) {
     recalculateAllSelectedDimensions();
     call('changed', selectedElements);
     break;
-  default:
+  } default:
     // This could occur in an extension
     break;
   }
@@ -3016,6 +3036,11 @@ let matrix;
 let lastX, lastY;
 let allowDbl;
 
+/**
+ *
+ * @param {Integer} index
+ * @returns {undefined}
+ */
 function setCursor (index) {
   const empty = (textinput.value === '');
   $(textinput).focus();
@@ -3066,6 +3091,13 @@ function setCursor (index) {
   if (selblock) { selblock.setAttribute('d', ''); }
 }
 
+/**
+ *
+ * @param {Integer} start
+ * @param {Integer} end
+ * @param {boolean} skipInput
+ * @returns {undefined}
+ */
 function setSelection (start, end, skipInput) {
   if (start === end) {
     setCursor(end);
@@ -3109,6 +3141,12 @@ function setSelection (start, end, skipInput) {
   });
 }
 
+/**
+ *
+ * @param {Float} mouseX
+ * @param {Float} mouseY
+ * @returns {Integer}
+ */
 function getIndexFromPoint (mouseX, mouseY) {
   // Position cursor here
   const pt = svgroot.createSVGPoint();
@@ -3136,10 +3174,23 @@ function getIndexFromPoint (mouseX, mouseY) {
   return charpos;
 }
 
+/**
+ *
+ * @param {Float} mouseX
+ * @param {Float} mouseY
+ * @returns {undefined}
+ */
 function setCursorFromPoint (mouseX, mouseY) {
   setCursor(getIndexFromPoint(mouseX, mouseY));
 }
 
+/**
+ *
+ * @param {Float} x
+ * @param {Float} y
+ * @param {boolean} apply
+ * @returns {undefined}
+ */
 function setEndSelectionFromPoint (x, y, apply) {
   const i1 = textinput.selectionStart;
   const i2 = getIndexFromPoint(x, y);
@@ -3149,6 +3200,12 @@ function setEndSelectionFromPoint (x, y, apply) {
   setSelection(start, end, !apply);
 }
 
+/**
+ *
+ * @param {Float} xIn
+ * @param {Float} yIn
+ * @returns {module:math.XYObject}
+ */
 function screenToPt (xIn, yIn) {
   const out = {
     x: xIn,
@@ -3167,6 +3224,12 @@ function screenToPt (xIn, yIn) {
   return out;
 }
 
+/**
+ *
+ * @param {Float} xIn
+ * @param {Float} yIn
+ * @returns {module:math.XYObject}
+ */
 function ptToScreen (xIn, yIn) {
   const out = {
     x: xIn,
@@ -3194,11 +3257,21 @@ function hideCursor () {
 }
 */
 
+/**
+ *
+ * @param {Event} evt
+ * @returns {undefined}
+ */
 function selectAll (evt) {
   setSelection(0, curtext.textContent.length);
   $(this).unbind(evt);
 }
 
+/**
+ *
+ * @param {Event} evt
+ * @returns {undefined}
+ */
 function selectWord (evt) {
   if (!allowDbl || !curtext) { return; }
 
@@ -3579,13 +3652,12 @@ this.svgToString = function (elem, indent) {
   if (elem) {
     cleanupElement(elem);
     const attrs = Array.from(elem.attributes);
-    let i;
     const childs = elem.childNodes;
     attrs.sort((a, b) => {
       return a.name > b.name ? -1 : 1;
     });
 
-    for (i = 0; i < indent; i++) { out.push(' '); }
+    for (let i = 0; i < indent; i++) { out.push(' '); }
     out.push('<'); out.push(elem.nodeName);
     if (elem.id === 'svgcontent') {
       // Process root element separately
@@ -3624,15 +3696,15 @@ this.svgToString = function (elem, indent) {
         }
 
         $.each(this.attributes, function (i, attr) {
-          const uri = attr.namespaceURI;
-          if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {
-            nsuris[uri] = true;
-            out.push(' xmlns:' + nsMap[uri] + '="' + uri + '"');
+          const u = attr.namespaceURI;
+          if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {
+            nsuris[u] = true;
+            out.push(' xmlns:' + nsMap[u] + '="' + u + '"');
           }
         });
       });
 
-      i = attrs.length;
+      let i = attrs.length;
       const attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];
       while (i--) {
         const attr = attrs[i];
@@ -3652,10 +3724,10 @@ this.svgToString = function (elem, indent) {
       }
     } else {
       // Skip empty defs
-      if (elem.nodeName === 'defs' && !elem.firstChild) { return; }
+      if (elem.nodeName === 'defs' && !elem.firstChild) { return ''; }
 
       const mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];
-      for (i = attrs.length - 1; i >= 0; i--) {
+      for (let i = attrs.length - 1; i >= 0; i--) {
         const attr = attrs[i];
         let attrVal = toXml(attr.value);
         // remove bogus attributes added by Gecko
@@ -3697,7 +3769,7 @@ this.svgToString = function (elem, indent) {
       indent++;
       let bOneLine = false;
 
-      for (i = 0; i < childs.length; i++) {
+      for (let i = 0; i < childs.length; i++) {
         const child = childs.item(i);
         switch (child.nodeType) {
         case 1: // element node
@@ -3730,7 +3802,7 @@ this.svgToString = function (elem, indent) {
       indent--;
       if (!bOneLine) {
         out.push('\n');
-        for (i = 0; i < indent; i++) { out.push(' '); }
+        for (let i = 0; i < indent; i++) { out.push(' '); }
       }
       out.push('</'); out.push(elem.nodeName); out.push('>');
     } else {
@@ -3750,11 +3822,11 @@ this.svgToString = function (elem, indent) {
 * Converts a given image file to a data URL when possible, then runs a given callback.
 * @function module:svgcanvas.SvgCanvas#embedImage
 * @param {string} src - The path/URL of the image
-* @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found
 * @returns {Promise} Resolves to Data URL (string|false)
 */
-this.embedImage = function (src, callback) {
-  return new Promise(function (resolve, reject) {
+this.embedImage = function (src) {
+  // Todo: Remove this Promise in favor of making an async/await `Image.load` utility
+  return new Promise(function (resolve, reject) { // eslint-disable-line promise/avoid-new
     // load in the image and once it's loaded, get the dimensions
     $(new Image()).load(function (response, status, xhr) {
       if (status === 'error') {
@@ -3776,7 +3848,6 @@ this.embedImage = function (src, callback) {
         encodableImages[src] = false;
       }
       lastGoodImgUrl = src;
-      if (callback) { callback(encodableImages[src]); }
       resolve(encodableImages[src]);
     }).attr('src', src);
   });
@@ -3798,6 +3869,7 @@ this.setGoodImage = function (val) {
 * @returns {undefined}
 */
 this.open = function () {
+  /* */
 };
 
 /**
@@ -3878,12 +3950,6 @@ let canvg;
 * @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added
 */
 
-/**
- * Function to run when image data is found
- * @callback module:svgcanvas.ImageExportedCallback
- * @param {module:svgcanvas.ImageExportedResults} obj
- * @returns {undefined}
- */
 /**
 * Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,
 * then calls "exported" with an object including the string, image
@@ -3892,38 +3958,42 @@ let canvg;
 * @param {"PNG"|"JPEG"|"BMP"|"WEBP"|"ICO"} [imgType="PNG"]
 * @param {Float} [quality] Between 0 and 1
 * @param {string} [exportWindowName]
-* @param {module:svgcanvas.ImageExportedCallback} [cb]
 * @param {PlainObject} [opts]
 * @param {boolean} [opts.avoidEvent]
 * @fires module:svgcanvas.SvgCanvas#event:exported
 * @todo Confirm/fix ICO type
 * @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}
 */
-this.rasterExport = function (imgType, quality, exportWindowName, cb, opts = {}) {
+this.rasterExport = async function (imgType, quality, exportWindowName, opts = {}) {
   const type = imgType === 'ICO' ? 'BMP' : (imgType || 'PNG');
   const mimeType = 'image/' + type.toLowerCase();
   const {issues, issueCodes} = getIssues();
   const svg = this.svgCanvasToString();
 
-  return new Promise(async (resolve, reject) => {
-    if (!canvg) {
-      ({canvg} = await importSetGlobal(curConfig.canvgPath + 'canvg.js', {
-        global: 'canvg'
-      }));
-    }
-    if (!$('#export_canvas').length) {
-      $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');
-    }
-    const c = $('#export_canvas')[0];
-    c.width = canvas.contentW;
-    c.height = canvas.contentH;
+  if (!canvg) {
+    ({canvg} = await importSetGlobal(curConfig.canvgPath + 'canvg.js', {
+      global: 'canvg'
+    }));
+  }
+  if (!$('#export_canvas').length) {
+    $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');
+  }
+  const c = $('#export_canvas')[0];
+  c.width = canvas.contentW;
+  c.height = canvas.contentH;
 
-    await canvg(c, svg);
+  await canvg(c, svg);
+  // Todo: Make async/await utility in place of `toBlob`, so we can remove this constructor
+  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
     const dataURLType = type.toLowerCase();
     const datauri = quality
       ? c.toDataURL('image/' + dataURLType, quality)
       : c.toDataURL('image/' + dataURLType);
     let bloburl;
+    /**
+     * Called when `bloburl` is available for export.
+     * @returns {undefined}
+     */
     function done () {
       const obj = {
         datauri, bloburl, svg, issues, issueCodes, type: imgType,
@@ -3932,9 +4002,6 @@ this.rasterExport = function (imgType, quality, exportWindowName, cb, opts = {})
       if (!opts.avoidEvent) {
         call('exported', obj);
       }
-      if (cb) {
-        cb(obj);
-      }
       resolve(obj);
     }
     if (c.toBlob) {
@@ -3974,86 +4041,72 @@ this.rasterExport = function (imgType, quality, exportWindowName, cb, opts = {})
 * @property {string} exportWindowName
 */
 
-/**
- * Function to run when PDF data is found
- * @callback module:svgcanvas.PDFExportedCallback
- * @param {module:svgcanvas.PDFExportedResults} obj
- * @returns {undefined}
- */
 /**
 * Generates a PDF based on the current image, then calls "exportedPDF" with
 * an object including the string, the data URL, and any issues found.
 * @function module:svgcanvas.SvgCanvas#exportPDF
 * @param {string} [exportWindowName] Will also be used for the download file name here
 * @param {external:jsPDF.OutputType} [outputType="dataurlstring"]
-* @param {module:svgcanvas.PDFExportedCallback} [cb]
 * @fires module:svgcanvas.SvgCanvas#event:exportedPDF
 * @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}
 */
-this.exportPDF = function (
+this.exportPDF = async function (
   exportWindowName,
-  outputType = isChrome() ? 'save' : undefined,
-  cb
+  outputType = isChrome() ? 'save' : undefined
 ) {
-  const that = this;
-  return new Promise(async (resolve, reject) => {
-    if (!window.jsPDF) {
-      // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
-      await importScript([
-        // We do not currently have these paths configurable as they are
-        //   currently global-only, so not Rolled-up
-        'jspdf/underscore-min.js',
-        'jspdf/jspdf.min.js'
-      ]);
+  if (!window.jsPDF) {
+    // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
+    await importScript([
+      // We do not currently have these paths configurable as they are
+      //   currently global-only, so not Rolled-up
+      'jspdf/underscore-min.js',
+      'jspdf/jspdf.min.js'
+    ]);
 
-      const modularVersion = !('svgEditor' in window) ||
-        !window.svgEditor ||
-        window.svgEditor.modules !== false;
-      // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
-      await importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
-        type: modularVersion
-          ? 'module'
-          : 'text/javascript'
-      });
-      // await importModule('jspdf/jspdf.plugin.svgToPdf.js');
-    }
-
-    const res = getResolution();
-    const orientation = res.w > res.h ? 'landscape' : 'portrait';
-    const unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
-
-    // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
-    const doc = jsPDF({
-      orientation,
-      unit,
-      format: [res.w, res.h]
-      // , compressPdf: true
+    const modularVersion = !('svgEditor' in window) ||
+      !window.svgEditor ||
+      window.svgEditor.modules !== false;
+    // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
+    await importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
+      type: modularVersion
+        ? 'module'
+        : 'text/javascript'
     });
-    const docTitle = getDocumentTitle();
-    doc.setProperties({
-      title: docTitle /* ,
-      subject: '',
-      author: '',
-      keywords: '',
-      creator: '' */
-    });
-    const {issues, issueCodes} = getIssues();
-    const svg = that.svgCanvasToString();
-    doc.addSVG(svg, 0, 0);
+    // await importModule('jspdf/jspdf.plugin.svgToPdf.js');
+  }
 
-    // doc.output('save'); // Works to open in a new
-    //  window; todo: configure this and other export
-    //  options to optionally work in this manner as
-    //  opposed to opening a new tab
-    outputType = outputType || 'dataurlstring';
-    const obj = {svg, issues, issueCodes, exportWindowName, outputType};
-    obj.output = doc.output(outputType, outputType === 'save' ? (exportWindowName || 'svg.pdf') : undefined);
-    if (cb) {
-      cb(obj);
-    }
-    resolve(obj);
-    call('exportedPDF', obj);
+  const res = getResolution();
+  const orientation = res.w > res.h ? 'landscape' : 'portrait';
+  const unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
+
+  // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
+  const doc = jsPDF({
+    orientation,
+    unit,
+    format: [res.w, res.h]
+    // , compressPdf: true
   });
+  const docTitle = getDocumentTitle();
+  doc.setProperties({
+    title: docTitle /* ,
+    subject: '',
+    author: '',
+    keywords: '',
+    creator: '' */
+  });
+  const {issues, issueCodes} = getIssues();
+  const svg = this.svgCanvasToString();
+  doc.addSVG(svg, 0, 0);
+
+  // doc.output('save'); // Works to open in a new
+  //  window; todo: configure this and other export
+  //  options to optionally work in this manner as
+  //  opposed to opening a new tab
+  outputType = outputType || 'dataurlstring';
+  const obj = {svg, issues, issueCodes, exportWindowName, outputType};
+  obj.output = doc.output(outputType, outputType === 'save' ? (exportWindowName || 'svg.pdf') : undefined);
+  call('exportedPDF', obj);
+  return obj;
 };
 
 /**
@@ -4218,14 +4271,14 @@ const convertGradients = this.convertGradients = function (elem) {
   }
 
   elems.each(function () {
-    const grad = this;
+    const grad = this; // eslint-disable-line consistent-this
     if ($(grad).attr('gradientUnits') === 'userSpaceOnUse') {
       // TODO: Support more than one element with this ref by duplicating parent grad
-      const elems = $(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
-      if (!elems.length) { return; }
+      const fillStrokeElems = $(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
+      if (!fillStrokeElems.length) { return; }
 
       // get object's bounding box
-      const bb = utilsGetBBox(elems[0]);
+      const bb = utilsGetBBox(fillStrokeElems[0]);
 
       // This will occur if the element is inside a <defs> or a <symbol>,
       // in which we shouldn't need to convert anyway.
@@ -4391,7 +4444,7 @@ const convertToGroup = this.convertToGroup = function (elem) {
       try {
         recalculateDimensions(n);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
       }
     });
 
@@ -4409,7 +4462,7 @@ const convertToGroup = this.convertToGroup = function (elem) {
 
     addCommandToHistory(batchCmd);
   } else {
-    console.log('Unexpected element to ungroup:', elem);
+    console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console
   }
 };
 
@@ -4467,7 +4520,7 @@ this.setSvgString = function (xmlString, preventUndo) {
 
     // change image href vals if possible
     content.find('image').each(function () {
-      const image = this;
+      const image = this; // eslint-disable-line consistent-this
       preventClickDefault(image);
       const val = getHref(this);
       if (val) {
@@ -4583,7 +4636,7 @@ this.setSvgString = function (xmlString, preventUndo) {
     if (!preventUndo) addCommandToHistory(batchCmd);
     call('changed', [svgcontent]);
   } catch (e) {
-    console.log(e);
+    console.log(e); // eslint-disable-line no-console
     return false;
   }
 
@@ -4714,7 +4767,7 @@ this.importSvgString = function (xmlString) {
     addCommandToHistory(batchCmd);
     call('changed', [svgcontent]);
   } catch (e) {
-    console.log(e);
+    console.log(e); // eslint-disable-line no-console
     return null;
   }
 
@@ -4724,13 +4777,14 @@ this.importSvgString = function (xmlString) {
 
 // Could deprecate, but besides external uses, their usage makes clear that
 //  canvas is a dependency for all of these
-[
-  'identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer',
-  'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition',
-  'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers',
-  'leaveContext', 'setContext'
-].forEach((prop) => {
-  canvas[prop] = draw[prop];
+const dr = {
+  identifyLayers, createLayer, cloneLayer, deleteCurrentLayer,
+  setCurrentLayer, renameCurrentLayer, setCurrentLayerPosition,
+  setLayerVisibility, moveSelectedToLayer, mergeLayer, mergeAllLayers,
+  leaveContext, setContext
+};
+Object.entries(dr).forEach(([prop, propVal]) => {
+  canvas[prop] = propVal;
 });
 draw.init(
   /**
@@ -4860,6 +4914,7 @@ this.getVersion = function () {
 */
 this.setUiStrings = function (strs) {
   Object.assign(uiStrings, strs.notification);
+  $ = jQueryPluginDBox($, strs.common);
   pathModule.setUiStrings(strs);
 };
 
@@ -5080,7 +5135,7 @@ this.getOffset = function () {
 this.setBBoxZoom = function (val, editorW, editorH) {
   let spacer = 0.85;
   let bb;
-  const calcZoom = function (bb) {
+  const calcZoom = function (bb) { // eslint-disable-line no-shadow
     if (!bb) { return false; }
     const wZoom = Math.round((editorW / bb.width) * 100 * spacer) / 100;
     const hZoom = Math.round((editorH / bb.height) * 100 * spacer) / 100;
@@ -5268,6 +5323,11 @@ this.setColor = function (type, val, preventUndo) {
   curShape[type] = val;
   curProperties[type + '_paint'] = {type: 'solidColor'};
   const elems = [];
+  /**
+   *
+   * @param {Element} e
+   * @returns {undefined}
+   */
   function addNonG (e) {
     if (e.nodeName !== 'g') {
       elems.push(e);
@@ -5348,7 +5408,7 @@ const findDuplicateGradient = function (grad) {
       const ogAttrs = $(og).attr(radAttrs);
 
       let diff = false;
-      $.each(radAttrs, function (i, attr) {
+      $.each(radAttrs, function (j, attr) {
         if (gradAttrs[attr] !== ogAttrs[attr]) { diff = true; }
       });
 
@@ -5451,6 +5511,11 @@ this.setStrokeWidth = function (val) {
   curProperties.stroke_width = val;
 
   const elems = [];
+  /**
+   *
+   * @param {Element} e
+   * @returns {undefined}
+   */
   function addNonG (e) {
     if (e.nodeName !== 'g') {
       elems.push(e);
@@ -5632,7 +5697,7 @@ canvas.setBlurNoUndo = function (val) {
       changeSelectedAttributeNoUndo('filter', 'url(#' + elem.id + '_blur)');
     }
     if (isWebkit()) {
-      console.log('e', elem);
+      // console.log('e', elem); // eslint-disable-line no-console
       elem.removeAttribute('filter');
       elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');
     }
@@ -5641,6 +5706,10 @@ canvas.setBlurNoUndo = function (val) {
   }
 };
 
+/**
+ *
+ * @returns {undefined}
+ */
 function finishChange () {
   const bCmd = canvas.undoMgr.finishUndoableChange();
   curCommand.addSubCommand(bCmd);
@@ -5653,14 +5722,14 @@ function finishChange () {
 * Sets the `x`, `y`, `width`, `height` values of the filter element in order to
 * make the blur not be clipped. Removes them if not neeeded.
 * @function module:svgcanvas.SvgCanvas#setBlurOffsets
-* @param {Element} filter - The filter DOM element to update
+* @param {Element} filterElem - The filter DOM element to update
 * @param {Float} stdDev - The standard deviation value on which to base the offset size
 * @returns {undefined}
 */
-canvas.setBlurOffsets = function (filter, stdDev) {
+canvas.setBlurOffsets = function (filterElem, stdDev) {
   if (stdDev > 3) {
     // TODO: Create algorithm here where size is based on expected blur
-    assignAttributes(filter, {
+    assignAttributes(filterElem, {
       x: '-50%',
       y: '-50%',
       width: '200%',
@@ -5668,10 +5737,10 @@ canvas.setBlurOffsets = function (filter, stdDev) {
     }, 100);
   // Removing these attributes hides text in Chrome (see Issue 579)
   } else if (!isWebkit()) {
-      filter.removeAttribute('x');
-      filter.removeAttribute('y');
-      filter.removeAttribute('width');
-      filter.removeAttribute('height');
+      filterElem.removeAttribute('x');
+      filterElem.removeAttribute('y');
+      filterElem.removeAttribute('width');
+      filterElem.removeAttribute('height');
   }
 };
 
@@ -6301,6 +6370,11 @@ this.pasteElements = function (type, x, y) {
   const changedIDs = {};
 
   // Recursively replace IDs and record the changes
+  /**
+   *
+   * @param {module:svgcanvas.SVGAsJSON} elem
+   * @returns {undefined}
+   */
   function checkIDs (elem) {
     if (elem.attr && elem.attr.id) {
       changedIDs[elem.attr.id] = getNextId();
@@ -6442,7 +6516,7 @@ this.groupSelectedElements = function (type, urlArg) {
 * @function module:svgcanvas.SvgCanvas#pushGroupProperties
 * @param {SVGAElement|SVGGElement} g
 * @param {boolean} undoable
-* @returns {undefined}
+* @returns {BatchCommand|undefined}
 */
 const pushGroupProperties = this.pushGroupProperties = function (g, undoable) {
   const children = g.childNodes;
@@ -6621,6 +6695,7 @@ const pushGroupProperties = this.pushGroupProperties = function (g, undoable) {
   if (undoable && !batchCmd.isEmpty()) {
     return batchCmd;
   }
+  return undefined;
 };
 
 /**
@@ -6798,7 +6873,7 @@ this.moveUpDownSelected = function (dir) {
 * @param {Float} dy - Float with the distance to move on the y-axis
 * @param {boolean} undoable - Boolean indicating whether or not the action should be undoable
 * @fires module:svgcanvas.SvgCanvas#event:changed
-* @returns {BatchCommand} Batch command for the move
+* @returns {BatchCommand|undefined} Batch command for the move
 */
 this.moveSelectedElements = function (dx, dy, undoable) {
   // if undoable is not sent, default to true
@@ -6859,6 +6934,7 @@ this.moveSelectedElements = function (dx, dy, undoable) {
     call('changed', selectedElements);
     return batchCmd;
   }
+  return undefined;
 };
 
 /**
@@ -6874,8 +6950,14 @@ this.cloneSelectedElements = function (x, y) {
   const batchCmd = new BatchCommand('Clone Elements');
   // find all the elements selected (stop at first null)
   const len = selectedElements.length;
+  /**
+   * Sorts an array numerically and ascending.
+   * @param {Element} a
+   * @param {Element} b
+   * @returns {Integer}
+   */
   function sortfunction (a, b) {
-    return ($(b).index() - $(a).index()); // causes an array to be sorted numerically and ascending
+    return ($(b).index() - $(a).index());
   }
   selectedElements.sort(sortfunction);
   for (i = 0; i < len; ++i) {
diff --git a/editor/utilities.js b/editor/utilities.js
index 4bfeaa58..579fe884 100644
--- a/editor/utilities.js
+++ b/editor/utilities.js
@@ -920,8 +920,8 @@ export const convertToPath = function (elem, attrs, addSVGElementFromJson, pathA
     }
 
     const {nextSibling} = elem;
-    batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));
-    batchCmd.addSubCommand(new history.InsertElementCommand(path));
+    batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));
+    batchCmd.addSubCommand(new hstry.InsertElementCommand(path));
 
     clearSelection();
     elem.remove();
diff --git a/editor/xdomain-svgedit-config-iife.js b/editor/xdomain-svgedit-config-iife.js
index cfdd34b2..d0a6787d 100644
--- a/editor/xdomain-svgedit-config-iife.js
+++ b/editor/xdomain-svgedit-config-iife.js
@@ -197,6 +197,12 @@
   }
 
   // http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
+
+  /**
+   *
+   * @param {Event} ev
+   * @returns {undefined}
+   */
   function touchHandler(ev) {
     var changedTouches = ev.changedTouches,
         first = changedTouches[0];
@@ -222,7 +228,8 @@
     var screenX = first.screenX,
         screenY = first.screenY,
         clientX = first.clientX,
-        clientY = first.clientY;
+        clientY = first.clientY; // eslint-disable-line no-shadow
+
     var simulatedEvent = new MouseEvent(type, {
       // Event interface
       bubbles: true,
@@ -315,6 +322,11 @@
   * including the latest spec changes which were implemented in Firefox 43 and
   * Chrome 46.
   */
+
+  /* eslint-disable no-shadow, class-methods-use-this */
+  // Linting: We avoid `no-shadow` as ESLint thinks these are still available globals
+  // Linting: We avoid `class-methods-use-this` as this is a polyfill that must
+  //   follow the conventions
   (function () {
     if (!('SVGPathSeg' in window)) {
       // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
@@ -2070,7 +2082,7 @@
               return [];
             }
 
-            var owningPathSegList = this;
+            var owningPathSegList = this; // eslint-disable-line consistent-this
 
             var Builder =
             /*#__PURE__*/
@@ -2420,6 +2432,19 @@
                       return new SVGPathSegClosePath(owningPathSegList);
 
                     case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:
+                      {
+                        var points = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x2: this._parseNumber(),
+                          y2: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
                       {
                         var _points = {
                           x1: this._parseNumber(),
@@ -2429,23 +2454,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
+                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
                       {
                         var _points2 = {
-                          x1: this._parseNumber(),
-                          y1: this._parseNumber(),
                           x2: this._parseNumber(),
                           y2: this._parseNumber(),
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points2.x, _points2.y, _points2.x1, _points2.y1, _points2.x2, _points2.y2);
+                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points2.x, _points2.y, _points2.x2, _points2.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
                       {
                         var _points3 = {
                           x2: this._parseNumber(),
@@ -2453,21 +2476,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
-                      }
-
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
-                      {
-                        var _points4 = {
-                          x2: this._parseNumber(),
-                          y2: this._parseNumber(),
-                          x: this._parseNumber(),
-                          y: this._parseNumber()
-                        };
-                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points4.x, _points4.y, _points4.x2, _points4.y2);
+                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
                       }
 
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:
+                      {
+                        var _points4 = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points4.x, _points4.y, _points4.x1, _points4.y1);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
                       {
                         var _points5 = {
                           x1: this._parseNumber(),
@@ -2475,18 +2498,9 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
+                        return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
-                      var points = {
-                        x1: this._parseNumber(),
-                        y1: this._parseNumber(),
-                        x: this._parseNumber(),
-                        y: this._parseNumber()
-                      };
-                      return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
-
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
                       return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
 
@@ -2619,13 +2633,13 @@
   var $ = jQuery;
 
   var supportsSVG_ = function () {
-    return !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;
+    return Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);
   }();
   var _navigator = navigator,
       userAgent = _navigator.userAgent;
   var svg = document.createElementNS(NS.SVG, 'svg'); // Note: Browser sniffing should only be used if no other detection method is possible
 
-  var isOpera_ = !!window.opera;
+  var isOpera_ = Boolean(window.opera);
   var isWebkit_ = userAgent.includes('AppleWebKit');
   var isGecko_ = userAgent.includes('Gecko/');
   var isIE_ = userAgent.includes('MSIE');
@@ -2635,11 +2649,11 @@
   var isTouch_ = 'ontouchstart' in window;
 
   var supportsSelectors_ = function () {
-    return !!svg.querySelector;
+    return Boolean(svg.querySelector);
   }();
 
   var supportsXpath_ = function () {
-    return !!document.evaluate;
+    return Boolean(document.evaluate);
   }(); // segList functions (for FF1.5 and 2.0)
 
 
@@ -2902,7 +2916,7 @@
   * @param {external:jQuery} $ The jQuery object to which to add the plug-in
   * @returns {external:jQuery}
   */
-  function jqPluginSVG ($) {
+  function jQueryPluginSVG($) {
     var proxied = $.fn.attr,
         svgns = 'http://www.w3.org/2000/svg';
     /**
@@ -2920,7 +2934,7 @@
       var len = this.length;
 
       if (!len) {
-        return proxied.apply(this, arguments);
+        return proxied.call(this, key, value);
       }
 
       for (var i = 0; i < len; ++i) {
@@ -2971,7 +2985,7 @@
             return _attr;
           }
         } else {
-          return proxied.apply(this, arguments);
+          return proxied.call(this, key, value);
         }
       }
 
@@ -2981,7 +2995,12 @@
     return $;
   }
 
-  var svgroot = document.createElementNS(NS.SVG, 'svg'); // Helper function.
+  var svgroot = document.createElementNS(NS.SVG, 'svg');
+  /**
+   * Helper function to convert `SVGTransform` to a string.
+   * @param {SVGTransform} xform
+   * @returns {string}
+   */
 
   function transformToString(xform) {
     var m = xform.matrix;
@@ -3105,11 +3124,14 @@
   * These methods do not currently raise any exceptions.
   * These methods also do not check that transforms are being inserted.  This is basically
   * implementing as much of SVGTransformList that we need to get the job done.
+  * @implements {module:SVGTransformList.SVGEditTransformList}
   */
 
   var SVGTransformList =
   /*#__PURE__*/
   function () {
+    // eslint-disable-line no-shadow
+
     /**
     * @param {Element} elem
     */
@@ -3180,7 +3202,7 @@
                 values.push(0, 0);
               }
 
-              xform[fname].apply(xform, values);
+              xform[fname].apply(xform, _toConsumableArray(values));
 
               _this._list.appendItem(xform);
             })();
@@ -3192,23 +3214,16 @@
         if (item) {
           // Check if this transform is already in a transformlist, and
           // remove it if so.
-          var found = false;
-
-          for (var id in listMap_) {
-            var tl = listMap_[id];
-
+          Object.values(listMap_).some(function (tl) {
             for (var i = 0, len = tl._xforms.length; i < len; ++i) {
               if (tl._xforms[i] === item) {
-                found = true;
                 tl.removeItem(i);
-                break;
+                return true;
               }
             }
 
-            if (found) {
-              break;
-            }
-          }
+            return false;
+          });
         }
       };
 
@@ -3391,6 +3406,7 @@
    */
 
   var removeElementFromListMap = function removeElementFromListMap(elem) {
+    // eslint-disable-line import/no-mutable-exports
     if (elem.id && listMap_[elem.id]) {
       delete listMap_[elem.id];
     }
@@ -3474,7 +3490,7 @@
 
   /**
    * @function module:units.ElementContainer#getElement
-   * @returns {Element} An element in the container given an id
+   * @returns {?Element} An element in the container given an id
    */
 
   /**
@@ -3571,8 +3587,7 @@
     var digits = elementContainer_.getRoundDigits();
 
     if (!isNaN(val)) {
-      // Note that + converts to Number
-      return +(+val).toFixed(digits);
+      return Number(Number(val).toFixed(digits));
     }
 
     if (Array.isArray(val)) {
@@ -3712,7 +3727,7 @@
 
       try {
         var elem = elementContainer_.getElement(val);
-        result = elem == null || elem === selectedElement;
+        result = isNullish(elem) || elem === selectedElement;
       } catch (e) {}
 
       return result;
@@ -3859,6 +3874,7 @@
     _createClass(MoveElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.MoveElementCommand';
       }
       /**
@@ -3945,6 +3961,7 @@
     _createClass(InsertElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.InsertElementCommand';
       }
       /**
@@ -4034,6 +4051,7 @@
     _createClass(RemoveElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.RemoveElementCommand';
       }
       /**
@@ -4074,9 +4092,9 @@
 
         removeElementFromListMap(this.elem);
 
-        if (this.nextSibling == null) {
+        if (isNullish(this.nextSibling)) {
           if (window.console) {
-            console.log('Error: reference element was lost');
+            console.log('Error: reference element was lost'); // eslint-disable-line no-console
           }
         }
 
@@ -4149,6 +4167,7 @@
     _createClass(ChangeElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.ChangeElementCommand';
       }
       /**
@@ -4161,35 +4180,38 @@
     }, {
       key: "apply",
       value: function apply(handler) {
+        var _this5 = this;
+
         if (handler) {
           handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);
         }
 
         var bChangedTransform = false;
+        Object.entries(this.newValues).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              attr = _ref2[0],
+              value = _ref2[1];
 
-        for (var attr in this.newValues) {
-          if (this.newValues[attr]) {
+          if (value) {
             if (attr === '#text') {
-              this.elem.textContent = this.newValues[attr];
+              _this5.elem.textContent = value;
             } else if (attr === '#href') {
-              setHref(this.elem, this.newValues[attr]);
+              setHref(_this5.elem, value);
             } else {
-              this.elem.setAttribute(attr, this.newValues[attr]);
+              _this5.elem.setAttribute(attr, value);
             }
+          } else if (attr === '#text') {
+            _this5.elem.textContent = '';
           } else {
-            if (attr === '#text') {
-              this.elem.textContent = '';
-            } else {
-              this.elem.setAttribute(attr, '');
-              this.elem.removeAttribute(attr);
-            }
+            _this5.elem.setAttribute(attr, '');
+
+            _this5.elem.removeAttribute(attr);
           }
 
           if (attr === 'transform') {
             bChangedTransform = true;
           }
-        } // relocate rotational transform, if necessary
-
+        }); // relocate rotational transform, if necessary
 
         if (!bChangedTransform) {
           var angle = getRotationAngle(this.elem);
@@ -4222,34 +4244,36 @@
     }, {
       key: "unapply",
       value: function unapply(handler) {
+        var _this6 = this;
+
         if (handler) {
           handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);
         }
 
         var bChangedTransform = false;
+        Object.entries(this.oldValues).forEach(function (_ref3) {
+          var _ref4 = _slicedToArray(_ref3, 2),
+              attr = _ref4[0],
+              value = _ref4[1];
 
-        for (var attr in this.oldValues) {
-          if (this.oldValues[attr]) {
+          if (value) {
             if (attr === '#text') {
-              this.elem.textContent = this.oldValues[attr];
+              _this6.elem.textContent = value;
             } else if (attr === '#href') {
-              setHref(this.elem, this.oldValues[attr]);
+              setHref(_this6.elem, value);
             } else {
-              this.elem.setAttribute(attr, this.oldValues[attr]);
+              _this6.elem.setAttribute(attr, value);
             }
+          } else if (attr === '#text') {
+            _this6.elem.textContent = '';
           } else {
-            if (attr === '#text') {
-              this.elem.textContent = '';
-            } else {
-              this.elem.removeAttribute(attr);
-            }
+            _this6.elem.removeAttribute(attr);
           }
 
           if (attr === 'transform') {
             bChangedTransform = true;
           }
-        } // relocate rotational transform, if necessary
-
+        }); // relocate rotational transform, if necessary
 
         if (!bChangedTransform) {
           var angle = getRotationAngle(this.elem);
@@ -4306,19 +4330,20 @@
     * @param {string} [text] - An optional string visible to user related to this change
     */
     function BatchCommand(text) {
-      var _this5;
+      var _this7;
 
       _classCallCheck(this, BatchCommand);
 
-      _this5 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
-      _this5.text = text || 'Batch Command';
-      _this5.stack = [];
-      return _this5;
+      _this7 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
+      _this7.text = text || 'Batch Command';
+      _this7.stack = [];
+      return _this7;
     }
 
     _createClass(BatchCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.BatchCommand';
       }
       /**
@@ -4555,7 +4580,7 @@
         while (i--) {
           var elem = elems[i];
 
-          if (elem == null) {
+          if (isNullish(elem)) {
             continue;
           }
 
@@ -4588,7 +4613,7 @@
         while (i--) {
           var elem = changeset.elements[i];
 
-          if (elem == null) {
+          if (isNullish(elem)) {
             continue;
           }
 
@@ -4608,7 +4633,7 @@
     return UndoManager;
   }();
 
-  var history = /*#__PURE__*/Object.freeze({
+  var hstry = /*#__PURE__*/Object.freeze({
     HistoryEventTypes: HistoryEventTypes,
     MoveElementCommand: MoveElementCommand,
     InsertElementCommand: InsertElementCommand,
@@ -4776,15 +4801,15 @@
   */
 
   var transformListToTransform = function transformListToTransform(tlist, min, max) {
-    if (tlist == null) {
+    if (isNullish(tlist)) {
       // Or should tlist = null have been prevented before this?
       return svg$1.createSVGTransformFromMatrix(svg$1.createSVGMatrix());
     }
 
     min = min || 0;
     max = max || tlist.numberOfItems - 1;
-    min = parseInt(min, 10);
-    max = parseInt(max, 10);
+    min = parseInt(min);
+    max = parseInt(max);
 
     if (min > max) {
       var temp = max;
@@ -4907,7 +4932,8 @@
    * @memberof module:path
   */
 
-  var path = null;
+  var path = null; // eslint-disable-line import/no-mutable-exports
+
   var editorContext_ = null;
   /**
   * @external MouseEvent
@@ -5159,14 +5185,14 @@
   */
 
   var getGripPt = function getGripPt(seg, altPt) {
-    var path = seg.path;
+    var pth = seg.path;
     var out = {
       x: altPt ? altPt.x : seg.item.x,
       y: altPt ? altPt.y : seg.item.y
     };
 
-    if (path.matrix) {
-      var pt = transformPoint(out.x, out.y, path.matrix);
+    if (pth.matrix) {
+      var pt = transformPoint(out.x, out.y, pth.matrix);
       out = pt;
     }
 
@@ -5178,18 +5204,18 @@
   /**
   * @function module:path.getPointFromGrip
   * @param {module:math.XYObject} pt
-  * @param {module:path.Path} path
+  * @param {module:path.Path} pth
   * @returns {module:math.XYObject}
   */
 
-  var getPointFromGrip = function getPointFromGrip(pt, path) {
+  var getPointFromGrip = function getPointFromGrip(pt, pth) {
     var out = {
       x: pt.x,
       y: pt.y
     };
 
-    if (path.matrix) {
-      pt = transformPoint(out.x, out.y, path.imatrix);
+    if (pth.matrix) {
+      pt = transformPoint(out.x, out.y, pth.imatrix);
       out.x = pt.x;
       out.y = pt.y;
     }
@@ -5262,8 +5288,8 @@
     var c = getElem('pathpointgrip_container');
 
     if (!c) {
-      var parent = getElem('selectorParentGroup');
-      c = parent.appendChild(document.createElementNS(NS.SVG, 'g'));
+      var parentElement = getElem('selectorParentGroup');
+      c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));
       c.id = 'pathpointgrip_container';
     }
 
@@ -5416,7 +5442,7 @@
   var replacePathSeg = function replacePathSeg(type, index, pts, elem) {
     var pth = elem || path.elem;
     var func = 'createSVGPathSeg' + pathFuncs[type];
-    var seg = pth[func].apply(pth, pts);
+    var seg = pth[func].apply(pth, _toConsumableArray(pts));
 
     if (supportsPathReplaceItem()) {
       pth.pathSegList.replaceItem(seg, index);
@@ -5482,13 +5508,12 @@
       var pts = ptObjToArr(seg.type, seg.item); // , true);
 
       for (var i = 0; i < pts.length; i += 2) {
-        var _pt = getGripPt(seg, {
+        var point = getGripPt(seg, {
           x: pts[i],
           y: pts[i + 1]
         });
-
-        pts[i] = _pt.x;
-        pts[i + 1] = _pt.y;
+        pts[i] = point.x;
+        pts[i + 1] = point.y;
       }
 
       replacePathSeg(seg.type, 1, pts, segLine);
@@ -5589,7 +5614,7 @@
       key: "showCtrlPts",
       value: function showCtrlPts(y) {
         for (var i in this.ctrlpts) {
-          if (this.ctrlpts.hasOwnProperty(i)) {
+          if ({}.hasOwnProperty.call(this.ctrlpts, i)) {
             this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');
           }
         }
@@ -5699,8 +5724,8 @@
         if (this.mate) {
           // The last point of a closed subpath has a 'mate',
           // which is the 'M' segment of the subpath
-          var _item = this.mate.item;
-          var pts = [_item.x += dx, _item.y += dy];
+          var itm = this.mate.item;
+          var pts = [itm.x += dx, itm.y += dy];
           replacePathSeg(this.mate.type, this.mate.index, pts); // Has no grip, so does not need 'updating'?
         }
 
@@ -5806,7 +5831,8 @@
       this.elem = elem;
       this.segs = [];
       this.selected_pts = [];
-      path = this;
+      path = this; // eslint-disable-line consistent-this
+
       this.init();
     }
     /**
@@ -5865,7 +5891,7 @@
             seg.mate = segs[startI];
             seg.addGrip();
 
-            if (this.first_seg == null) {
+            if (isNullish(this.first_seg)) {
               this.first_seg = seg;
             }
           } else if (!nextSeg) {
@@ -5902,7 +5928,7 @@
       * @callback module:path.PathEachSegCallback
       * @this module:path.Segment
       * @param {Integer} i The index of the seg being iterated
-      * @returns {boolean} Will stop execution of `eachSeg` if returns `false`
+      * @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`
       */
 
       /**
@@ -5998,8 +6024,8 @@
         } else if (!seg.prev) {
           // First node of open path, make next point the M
           // const {item} = seg;
-          var _pt2 = [next.item.x, next.item.y];
-          replacePathSeg(2, seg.next.index, _pt2);
+          var _pt = [next.item.x, next.item.y];
+          replacePathSeg(2, seg.next.index, _pt);
           list.removeItem(index);
         } else {
           list.removeItem(index);
@@ -6007,34 +6033,6 @@
       }
       /**
       * @param {Integer} index
-      * @returns {boolean}
-      */
-
-    }, {
-      key: "subpathIsClosed",
-      value: function subpathIsClosed(index) {
-        var closed = false; // Check if subpath is already open
-
-        path.eachSeg(function (i) {
-          if (i <= index) {
-            return true;
-          }
-
-          if (this.type === 2) {
-            // Found M first, so open
-            return false;
-          }
-
-          if (this.type === 1) {
-            // Found Z first, so closed
-            closed = true;
-            return false;
-          }
-        });
-        return closed;
-      }
-      /**
-      * @param {Integer} index
       * @returns {undefined}
       */
 
@@ -6215,7 +6213,7 @@
       value: function selectPt(pt, ctrlNum) {
         this.clearSelection();
 
-        if (pt == null) {
+        if (isNullish(pt)) {
           this.eachSeg(function (i) {
             // 'this' is the segment here.
             if (this.prev) {
@@ -6315,7 +6313,7 @@
           grips[i] = _seg2.ptgrip;
         }
 
-        var closedSubpath = this.subpathIsClosed(this.selected_pts[0]);
+        var closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);
         editorContext_.addPtsToSelection({
           grips: grips,
           closedSubpath: closedSubpath
@@ -6326,11 +6324,40 @@
     return Path;
   }();
   /**
+  * @param {Integer} index
+  * @returns {boolean}
+  */
+
+  Path.subpathIsClosed = function (index) {
+    var clsd = false; // Check if subpath is already open
+
+    path.eachSeg(function (i) {
+      if (i <= index) {
+        return true;
+      }
+
+      if (this.type === 2) {
+        // Found M first, so open
+        return false;
+      }
+
+      if (this.type === 1) {
+        // Found Z first, so closed
+        clsd = true;
+        return false;
+      }
+
+      return true;
+    });
+    return clsd;
+  };
+  /**
   * @function module:path.getPath_
   * @param {SVGPathElement} elem
   * @returns {module:path.Path}
   */
 
+
   var getPath_ = function getPath_(elem) {
     var p = pathData[elem.id];
 
@@ -6423,7 +6450,7 @@
       var rvals = getRotVals(seg.x, seg.y),
           points = [rvals.x, rvals.y];
 
-      if (seg.x1 != null && seg.x2 != null) {
+      if (!isNullish(seg.x1) && !isNullish(seg.x2)) {
         var cVals1 = getRotVals(seg.x1, seg.y1);
         var cVals2 = getRotVals(seg.x2, seg.y2);
         points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);
@@ -6511,21 +6538,21 @@
    * Convert a path to one with only absolute or relative values.
    * @todo move to pathActions.js
    * @function module:path.convertPath
-   * @param {SVGPathElement} path - the path to convert
+   * @param {SVGPathElement} pth - the path to convert
    * @param {boolean} toRel - true of convert to relative
    * @returns {string}
    */
 
-  var convertPath = function convertPath(path, toRel) {
-    var segList = path.pathSegList;
-    var len = segList.numberOfItems;
+  var convertPath = function convertPath(pth, toRel) {
+    var pathSegList = pth.pathSegList;
+    var len = pathSegList.numberOfItems;
     var curx = 0,
         cury = 0;
     var d = '';
     var lastM = null;
 
     for (var i = 0; i < len; ++i) {
-      var seg = segList.getItem(i); // if these properties are not in the segment, set them to zero
+      var seg = pathSegList.getItem(i); // if these properties are not in the segment, set them to zero
 
       var x = seg.x || 0,
           y = seg.y || 0,
@@ -6858,7 +6885,7 @@
         * @param {Element} mouseTarget
         * @param {Float} startX
         * @param {Float} startY
-        * @returns {undefined}
+        * @returns {boolean|undefined}
         */
         mouseDown: function mouseDown(evt, mouseTarget, startX, startY) {
           var id;
@@ -7002,7 +7029,7 @@
                 // Checks if current target or parents are #svgcontent
                 if (!$$1.contains(editorContext_.getContainer(), editorContext_.getMouseTarget(evt))) {
                   // Clicked outside canvas, so don't make point
-                  console.log('Clicked outside canvas');
+                  // console.log('Clicked outside canvas');
                   return false;
                 }
 
@@ -7042,12 +7069,12 @@
 
             }
 
-            return;
+            return undefined;
           } // TODO: Make sure currentPath isn't null at this point
 
 
           if (!path) {
-            return;
+            return undefined;
           }
 
           path.storeD();
@@ -7056,7 +7083,7 @@
 
           if (id.substr(0, 14) === 'pathpointgrip_') {
             // Select this point
-            curPt = path.cur_pt = parseInt(id.substr(14), 10);
+            curPt = path.cur_pt = parseInt(id.substr(14));
             path.dragging = [startX, startY];
             var seg = path.segs[curPt]; // only clear selection if shift is not pressed (otherwise, add
             // node to selection)
@@ -7084,7 +7111,7 @@
           if (!path.dragging) {
             var rubberBox = editorContext_.getRubberBox();
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = editorContext_.setRubberBox(editorContext_.selectorManager.getRubberBandBox());
             }
 
@@ -7098,6 +7125,8 @@
               display: 'inline'
             }, 100);
           }
+
+          return undefined;
         },
 
         /**
@@ -7208,7 +7237,7 @@
           } else {
             path.selected_pts = [];
             path.eachSeg(function (i) {
-              var seg = this;
+              var seg = this; // eslint-disable-line consistent-this
 
               if (!seg.next && !seg.prev) {
                 return;
@@ -7234,12 +7263,19 @@
           }
         },
 
+        /**
+         * @typedef module:path.keepElement
+         * @type {PlainObject}
+         * @property {boolean} keep
+         * @property {Element} element
+         */
+
         /**
         * @param {Event} evt
         * @param {Element} element
         * @param {Float} mouseX
         * @param {Float} mouseY
-        * @returns {undefined}
+        * @returns {module:path.keepElement|undefined}
         */
         mouseUp: function mouseUp(evt, element, mouseX, mouseY) {
           var drawnPath = editorContext_.getDrawnPath(); // Create mode
@@ -7288,6 +7324,7 @@
           }
 
           hasMoved = false;
+          return undefined;
         },
 
         /**
@@ -7366,9 +7403,9 @@
             return;
           }
 
-          var angle = getRotationAngle(elem);
+          var angl = getRotationAngle(elem);
 
-          if (angle === 0) {
+          if (angl === 0) {
             return;
           }
 
@@ -7418,7 +7455,7 @@
         * @returns {false|undefined}
         */
         resetOrientation: function resetOrientation(pth) {
-          if (pth == null || pth.nodeName !== 'path') {
+          if (isNullish(pth) || pth.nodeName !== 'path') {
             return false;
           }
 
@@ -7467,6 +7504,7 @@
           }
 
           reorientGrads(pth, m);
+          return undefined;
         },
 
         /**
@@ -7565,9 +7603,11 @@
               openPt = false;
               return false;
             }
+
+            return true;
           });
 
-          if (openPt == null) {
+          if (isNullish(openPt)) {
             // Single path, so close last seg
             openPt = path.segs.length - 1;
           }
@@ -7815,7 +7855,7 @@
     );
   }(); // end pathActions
 
-  var $$2 = jqPluginSVG(jQuery); // String used to encode base64.
+  var $$2 = jQueryPluginSVG(jQuery); // String used to encode base64.
 
   var KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; // Much faster than running getBBox() every time
 
@@ -7935,7 +7975,7 @@
   * @returns {string} Base64 output
   */
 
-  var encode64 = function encode64(input) {
+  function encode64(input) {
     // base64 strings are 4/3 larger than the original string
     input = encodeUTF8(input); // convert non-ASCII characters
     // input = convertToXMLReferences(input);
@@ -7944,8 +7984,7 @@
       return window.btoa(input); // Use native if available
     }
 
-    var output = [];
-    output.length = Math.floor((input.length + 2) / 3) * 4;
+    var output = new Array(Math.floor((input.length + 2) / 3) * 4);
     var i = 0,
         p = 0;
 
@@ -7953,13 +7992,17 @@
       var chr1 = input.charCodeAt(i++);
       var chr2 = input.charCodeAt(i++);
       var chr3 = input.charCodeAt(i++);
+      /* eslint-disable no-bitwise */
+
       var enc1 = chr1 >> 2;
       var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
       var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
       var enc4 = chr3 & 63;
+      /* eslint-enable no-bitwise */
 
       if (isNaN(chr2)) {
-        enc3 = enc4 = 64;
+        enc3 = 64;
+        enc4 = 64;
       } else if (isNaN(chr3)) {
         enc4 = 64;
       }
@@ -7971,7 +8014,7 @@
     } while (i < input.length);
 
     return output.join('');
-  };
+  }
   /**
   * Converts a string from base64.
   * @function module:utilities.decode64
@@ -7979,7 +8022,7 @@
   * @returns {string} Decoded output
   */
 
-  var decode64 = function decode64(input) {
+  function decode64(input) {
     if (window.atob) {
       return decodeUTF8(window.atob(input));
     } // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
@@ -7994,31 +8037,35 @@
       var enc2 = KEYSTR.indexOf(input.charAt(i++));
       var enc3 = KEYSTR.indexOf(input.charAt(i++));
       var enc4 = KEYSTR.indexOf(input.charAt(i++));
+      /* eslint-disable no-bitwise */
+
       var chr1 = enc1 << 2 | enc2 >> 4;
       var chr2 = (enc2 & 15) << 4 | enc3 >> 2;
       var chr3 = (enc3 & 3) << 6 | enc4;
+      /* eslint-enable no-bitwise */
+
       output += String.fromCharCode(chr1);
 
       if (enc3 !== 64) {
-        output = output + String.fromCharCode(chr2);
+        output += String.fromCharCode(chr2);
       }
 
       if (enc4 !== 64) {
-        output = output + String.fromCharCode(chr3);
+        output += String.fromCharCode(chr3);
       }
     } while (i < input.length);
 
     return decodeUTF8(output);
-  };
+  }
   /**
   * @function module:utilities.decodeUTF8
   * @param {string} argString
   * @returns {string}
   */
 
-  var decodeUTF8 = function decodeUTF8(argString) {
+  function decodeUTF8(argString) {
     return decodeURIComponent(escape(argString));
-  }; // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
+  } // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
 
   /**
   * @function module:utilities.encodeUTF8
@@ -8227,6 +8274,7 @@
   */
 
   var getHref = function getHref(elem) {
+    // eslint-disable-line import/no-mutable-exports
     return elem.getAttributeNS(NS.XLINK, 'href');
   };
   /**
@@ -8238,6 +8286,7 @@
   */
 
   var setHref = function setHref(elem, val) {
+    // eslint-disable-line import/no-mutable-exports
     elem.setAttributeNS(NS.XLINK, 'xlink:href', val);
   };
   /**
@@ -8280,6 +8329,12 @@
     var start = seglist.getItem(0);
     var P0 = [start.x, start.y];
 
+    var getCalc = function getCalc(j, P1, P2, P3) {
+      return function (t) {
+        return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
+      };
+    };
+
     for (var i = 0; i < tot; i++) {
       var seg = seglist.getItem(i);
 
@@ -8292,61 +8347,50 @@
       bounds[1].push(P0[1]);
 
       if (seg.x1) {
-        (function () {
-          var P1 = [seg.x1, seg.y1],
-              P2 = [seg.x2, seg.y2],
-              P3 = [seg.x, seg.y];
+        var P1 = [seg.x1, seg.y1],
+            P2 = [seg.x2, seg.y2],
+            P3 = [seg.x, seg.y];
 
-          var _loop = function _loop(j) {
-            var calc = function calc(t) {
-              return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
-            };
+        for (var j = 0; j < 2; j++) {
+          var calc = getCalc(j, P1, P2, P3);
+          var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
+          var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
+          var c = 3 * P1[j] - 3 * P0[j];
 
-            var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
-            var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
-            var c = 3 * P1[j] - 3 * P0[j];
-
-            if (a === 0) {
-              if (b === 0) {
-                return "continue";
-              }
-
-              var t = -c / b;
-
-              if (t > 0 && t < 1) {
-                bounds[j].push(calc(t));
-              }
-
-              return "continue";
+          if (a === 0) {
+            if (b === 0) {
+              continue;
             }
 
-            var b2ac = Math.pow(b, 2) - 4 * c * a;
+            var t = -c / b;
 
-            if (b2ac < 0) {
-              return "continue";
+            if (t > 0 && t < 1) {
+              bounds[j].push(calc(t));
             }
 
-            var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
-
-            if (t1 > 0 && t1 < 1) {
-              bounds[j].push(calc(t1));
-            }
-
-            var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
-
-            if (t2 > 0 && t2 < 1) {
-              bounds[j].push(calc(t2));
-            }
-          };
-
-          for (var j = 0; j < 2; j++) {
-            var _ret = _loop(j);
-
-            if (_ret === "continue") continue;
+            continue;
           }
 
-          P0 = P3;
-        })();
+          var b2ac = Math.pow(b, 2) - 4 * c * a;
+
+          if (b2ac < 0) {
+            continue;
+          }
+
+          var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
+
+          if (t1 > 0 && t1 < 1) {
+            bounds[j].push(calc(t1));
+          }
+
+          var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
+
+          if (t2 > 0 && t2 < 1) {
+            bounds[j].push(calc(t2));
+          }
+        }
+
+        P0 = P3;
       } else {
         bounds[0].push(seg.x);
         bounds[1].push(seg.y);
@@ -8445,10 +8489,8 @@
 
           ret = selected.getBBox();
           selected.textContent = '';
-        } else {
-          if (selected.getBBox) {
-            ret = selected.getBBox();
-          }
+        } else if (selected.getBBox) {
+          ret = selected.getBBox();
         }
 
         break;
@@ -8456,10 +8498,8 @@
       case 'path':
         if (!supportsPathBBox()) {
           ret = getPathBBox(selected);
-        } else {
-          if (selected.getBBox) {
-            ret = selected.getBBox();
-          }
+        } else if (selected.getBBox) {
+          ret = selected.getBBox();
         }
 
         break;
@@ -8574,21 +8614,24 @@
     switch (elem.tagName) {
       case 'ellipse':
       case 'circle':
-        a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
-        var _a = a,
-            cx = _a.cx,
-            cy = _a.cy;
-        var _a2 = a;
-        rx = _a2.rx;
-        ry = _a2.ry;
+        {
+          a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
+          var _a = a,
+              cx = _a.cx,
+              cy = _a.cy;
+          var _a2 = a;
+          rx = _a2.rx;
+          ry = _a2.ry;
 
-        if (elem.tagName === 'circle') {
-          rx = ry = $$2(elem).attr('r');
+          if (elem.tagName === 'circle') {
+            ry = $$2(elem).attr('r');
+            rx = ry;
+          }
+
+          d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
+          break;
         }
 
-        d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
-        break;
-
       case 'path':
         d = elem.getAttribute('d');
         break;
@@ -8607,25 +8650,27 @@
         break;
 
       case 'rect':
-        var r = $$2(elem).attr(['rx', 'ry']);
-        rx = r.rx;
-        ry = r.ry;
-        var b = elem.getBBox();
-        var x = b.x,
-            y = b.y,
-            w = b.width,
-            h = b.height;
-        num = 4 - num; // Why? Because!
+        {
+          var r = $$2(elem).attr(['rx', 'ry']);
+          rx = r.rx;
+          ry = r.ry;
+          var b = elem.getBBox();
+          var x = b.x,
+              y = b.y,
+              w = b.width,
+              h = b.height;
+          num = 4 - num; // Why? Because!
 
-        if (!rx && !ry) {
-          // Regular rect
-          d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
-        } else {
-          d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+          if (!rx && !ry) {
+            // Regular rect
+            d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
+          } else {
+            d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+          }
+
+          break;
         }
 
-        break;
-
       default:
         break;
     }
@@ -8672,12 +8717,12 @@
       path$$1.setAttribute('transform', eltrans);
     }
 
-    var parent = elem.parentNode;
+    var parentNode = elem.parentNode;
 
     if (elem.nextSibling) {
       elem.before(path$$1);
     } else {
-      parent.append(path$$1);
+      parentNode.append(path$$1);
     }
 
     var d = getPathDFromElement(elem);
@@ -8709,13 +8754,13 @@
   * @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.
   * @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}
   * @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}
-  * @param {module:history} history - see history module
+  * @param {module:history} hstry - see history module
   * @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}
   * @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.
   */
 
-  var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory) {
-    var batchCmd = new history.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
+  var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory) {
+    var batchCmd = new hstry.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
 
     attrs = $$2.extend({}, attrs, getExtraAttributesForConvertToPath(elem));
     var path$$1 = addSVGElementFromJson({
@@ -8729,12 +8774,12 @@
     }
 
     var id = elem.id;
-    var parent = elem.parentNode;
+    var parentNode = elem.parentNode;
 
     if (elem.nextSibling) {
       elem.before(path$$1);
     } else {
-      parent.append(path$$1);
+      parentNode.append(path$$1);
     }
 
     var d = getPathDFromElement(elem);
@@ -8752,8 +8797,8 @@
       }
 
       var nextSibling = elem.nextSibling;
-      batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));
-      batchCmd.addSubCommand(new history.InsertElementCommand(path$$1));
+      batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));
+      batchCmd.addSubCommand(new hstry.InsertElementCommand(path$$1));
       clearSelection();
       elem.remove();
       path$$1.setAttribute('id', id);
@@ -8784,15 +8829,15 @@
   * getBBox then apply the angle and any transforms.
   *
   * @param {Float} angle - The rotation angle in degrees
-  * @param {boolean} hasMatrixTransform - True if there is a matrix transform
+  * @param {boolean} hasAMatrixTransform - True if there is a matrix transform
   * @returns {boolean} True if the bbox can be optimized.
   */
 
-  function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixTransform$$1) {
+  function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasAMatrixTransform) {
     var angleModulo90 = angle % 90;
     var closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;
     var closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;
-    return hasMatrixTransform$$1 || !(closeTo0 || closeTo90);
+    return hasAMatrixTransform || !(closeTo0 || closeTo90);
   }
   /**
   * Get bounding box that includes any transforms.
@@ -8827,14 +8872,16 @@
         var elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];
 
         if (elemNames.includes(elem.tagName)) {
-          bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          bb = goodBb;
         } else if (elem.tagName === 'rect') {
           // Look for radius
           var rx = elem.getAttribute('rx');
           var ry = elem.getAttribute('ry');
 
           if (rx || ry) {
-            bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+            goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+            bb = goodBb;
           }
         }
       }
@@ -8860,7 +8907,13 @@
     }
 
     return bb;
-  }; // TODO: This is problematic with large stroke-width and, for example, a single horizontal line. The calculated BBox extends way beyond left and right sides.
+  };
+  /**
+   * @param {Element} elem
+   * @returns {Float}
+   * @todo This is problematic with large stroke-width and, for example, a single
+   * horizontal line. The calculated BBox extends way beyond left and right sides.
+   */
 
   function getStrokeOffsetForBBox(elem) {
     var sw = elem.getAttribute('stroke-width');
@@ -8948,17 +9001,17 @@
   * Note that 0-opacity, off-screen etc elements are still considered "visible"
   * for this function.
   * @function module:utilities.getVisibleElements
-  * @param {Element} parent - The parent DOM element to search within
+  * @param {Element} parentElement - The parent DOM element to search within
   * @returns {Element[]} All "visible" elements.
   */
 
-  var getVisibleElements = function getVisibleElements(parent) {
-    if (!parent) {
-      parent = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
+  var getVisibleElements = function getVisibleElements(parentElement) {
+    if (!parentElement) {
+      parentElement = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
     }
 
     var contentElems = [];
-    $$2(parent).children().each(function (i, elem) {
+    $$2(parentElement).children().each(function (i, elem) {
       if (elem.getBBox) {
         contentElems.push(elem);
       }
@@ -9014,6 +9067,7 @@
   */
 
   var getRotationAngle = function getRotationAngle(elem, toRad) {
+    // eslint-disable-line import/no-mutable-exports
     var selected = elem || editorContext_$1.getSelectedElements()[0]; // find the rotation transform (if any) and set it
 
     var tlist = getTransformList(selected);
@@ -9033,7 +9087,7 @@
   * Get a DOM element by ID within the SVG root element.
   * @function module:utilities.getElem
   * @param {string} id - String with the element's new ID
-  * @returns {Element}
+  * @returns {?Element}
   */
 
   var getElem = supportsSelectors() ? function (id) {
@@ -9105,13 +9159,15 @@
       delete defaults.ry;
     }
 
-    for (var attr in defaults) {
-      var val = defaults[attr];
+    Object.entries(defaults).forEach(function (_ref4) {
+      var _ref5 = _slicedToArray(_ref4, 2),
+          attr = _ref5[0],
+          val = _ref5[1];
 
       if (element.getAttribute(attr) === String(val)) {
         element.removeAttribute(attr);
       }
-    }
+    });
   };
   /**
   * Round value to for snapping.
@@ -9214,6 +9270,15 @@
 
     return newEl;
   };
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+  var isNullish = function isNullish(val) {
+    return val === null || val === undefined;
+  };
 
   /* globals jQuery */
 
@@ -9267,9 +9332,9 @@
 
 
   var injectExtendedContextMenuItemsIntoDom = function injectExtendedContextMenuItemsIntoDom() {
-    for (var menuItem in contextMenuExtensions) {
-      injectExtendedContextMenuItemIntoDom(contextMenuExtensions[menuItem]);
-    }
+    Object.values(contextMenuExtensions).forEach(function (menuItem) {
+      injectExtendedContextMenuItemIntoDom(menuItem);
+    });
   };
 
   // MIT License
@@ -9278,12 +9343,25 @@
   /**
    * @module importModule
    */
+
+  /**
+   * Converts a possible relative URL into an absolute one.
+   * @param {string} url
+   * @returns {string}
+   */
   function toAbsoluteURL(url) {
     var a = document.createElement('a');
     a.setAttribute('href', url); // <a href="hoge.html">
 
     return a.cloneNode(false).href; // -> "http://example.com/hoge.html"
   }
+  /**
+   * Add any of the whitelisted attributes to the script tag.
+   * @param {HTMLScriptElement} script
+   * @param {PlainObject.<string, string>} atts
+   * @returns {undefined}
+   */
+
 
   function addScriptAtts(script, atts) {
     ['id', 'class', 'type'].forEach(function (prop) {
@@ -9301,84 +9379,73 @@
 
   /**
   * @function module:importModule.importSetGlobalDefault
-  * @param {string} url
+  * @param {string|string[]} url
   * @param {module:importModule.ImportConfig} config
-  * @returns {*} The return depends on the export of the targeted module.
+  * @returns {Promise} The value to which it resolves depends on the export of the targeted module.
   */
 
 
-  function importSetGlobalDefault(_x, _x2) {
-    return _importSetGlobalDefault.apply(this, arguments);
+  function importSetGlobalDefault(url, config) {
+    return importSetGlobal(url, _extends({}, config, {
+      returnDefault: true
+    }));
   }
   /**
   * @function module:importModule.importSetGlobal
-  * @param {string} url
+  * @param {string|string[]} url
   * @param {module:importModule.ImportConfig} config
-  * @returns {ArbitraryModule|*} The return depends on the export of the targeted module.
+  * @returns {Promise} The promise resolves to either an `ArbitraryModule` or
+  *   any other value depends on the export of the targeted module.
   */
 
-  function _importSetGlobalDefault() {
-    _importSetGlobalDefault = _asyncToGenerator(
+  function importSetGlobal(_x, _x2) {
+    return _importSetGlobal.apply(this, arguments);
+  }
+  /**
+   *
+   * @author Brett Zamir (other items are from `dynamic-import-polyfill`)
+   * @param {string|string[]} url
+   * @param {PlainObject} [atts={}]
+   * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a
+   *   script loading error
+   */
+
+  function _importSetGlobal() {
+    _importSetGlobal = _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee(url, config) {
+    regeneratorRuntime.mark(function _callee(url, _ref) {
+      var glob, returnDefault, modularVersion;
       return regeneratorRuntime.wrap(function _callee$(_context) {
         while (1) {
           switch (_context.prev = _context.next) {
             case 0:
-              return _context.abrupt("return", importSetGlobal(url, _extends({}, config, {
-                returnDefault: true
-              })));
+              glob = _ref.global, returnDefault = _ref.returnDefault;
+              // Todo: Replace calls to this function with `import()` when supported
+              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
 
-            case 1:
+              if (!modularVersion) {
+                _context.next = 4;
+                break;
+              }
+
+              return _context.abrupt("return", importModule(url, undefined, {
+                returnDefault: returnDefault
+              }));
+
+            case 4:
+              _context.next = 6;
+              return importScript(url);
+
+            case 6:
+              return _context.abrupt("return", window[glob]);
+
+            case 7:
             case "end":
               return _context.stop();
           }
         }
       }, _callee, this);
     }));
-    return _importSetGlobalDefault.apply(this, arguments);
-  }
-
-  function importSetGlobal(_x3, _x4) {
-    return _importSetGlobal.apply(this, arguments);
-  } // Addition by Brett
-
-  function _importSetGlobal() {
-    _importSetGlobal = _asyncToGenerator(
-    /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee2(url, _ref) {
-      var global, returnDefault, modularVersion;
-      return regeneratorRuntime.wrap(function _callee2$(_context2) {
-        while (1) {
-          switch (_context2.prev = _context2.next) {
-            case 0:
-              global = _ref.global, returnDefault = _ref.returnDefault;
-              // Todo: Replace calls to this function with `import()` when supported
-              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
-
-              if (!modularVersion) {
-                _context2.next = 4;
-                break;
-              }
-
-              return _context2.abrupt("return", importModule(url, undefined, {
-                returnDefault: returnDefault
-              }));
-
-            case 4:
-              _context2.next = 6;
-              return importScript(url);
-
-            case 6:
-              return _context2.abrupt("return", window[global]);
-
-            case 7:
-            case "end":
-              return _context2.stop();
-          }
-        }
-      }, _callee2, this);
-    }));
     return _importSetGlobal.apply(this, arguments);
   }
 
@@ -9392,6 +9459,7 @@
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var script = document.createElement('script');
 
       var destructor = function destructor() {
@@ -9418,6 +9486,16 @@
       document.head.append(script);
     });
   }
+  /**
+   *
+   * @param {string|string[]} url
+   * @param {PlainObject} [atts={}]
+   * @param {PlainObject} opts
+   * @param {boolean} [opts.returnDefault=false} = {}]
+   * @returns {Promise} Resolves to value of loading module or rejects with
+   *   `Error` upon a script loading error.
+   */
+
   function importModule(url) {
     var atts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
 
@@ -9432,6 +9510,7 @@
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var vector = '$importModule$' + Math.random().toString(32).slice(2);
       var script = document.createElement('script');
 
@@ -9469,6 +9548,202 @@
     });
   }
 
+  /**
+   * @module jQueryPluginDBox
+   */
+
+  /**
+  * @param {external:jQuery} $
+  * @param {PlainObject} [strings]
+  * @param {PlainObject} [strings.ok]
+  * @param {PlainObject} [strings.cancel]
+  * @returns {external:jQuery}
+  */
+  function jQueryPluginDBox($) {
+    var strings = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+      ok: 'Ok',
+      cancel: 'Cancel'
+    };
+    // This sets up alternative dialog boxes. They mostly work the same way as
+    // their UI counterparts, expect instead of returning the result, a callback
+    // needs to be included that returns the result as its first parameter.
+    // In the future we may want to add additional types of dialog boxes, since
+    // they should be easy to handle this way.
+    $('#dialog_container').draggable({
+      cancel: '#dialog_content, #dialog_buttons *',
+      containment: 'window'
+    }).css('position', 'absolute');
+    var box = $('#dialog_box'),
+        btnHolder = $('#dialog_buttons'),
+        dialogContent = $('#dialog_content');
+    /**
+    * Resolves to `false` (if cancelled), for prompts and selects
+    * without checkboxes, it resolves to the value of the form control. For other
+    * types without checkboxes, it resolves to `true`. For checkboxes, it resolves
+    * to an object with the `response` key containing the same value as the previous
+    * mentioned (string or `true`) and a `checked` (boolean) property.
+    * @typedef {Promise} module:jQueryPluginDBox.PromiseResult
+    */
+
+    /**
+    * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption
+    * @property {string} text
+    * @property {string} value
+    */
+
+    /**
+    * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo
+    * @property {string} label Label for the checkbox
+    * @property {string} value Value of the checkbox
+    * @property {string} tooltip Tooltip on the checkbox label
+    * @property {boolean} checked Whether the checkbox is checked by default
+    */
+
+    /**
+     * Triggered upon a change of value for the select pull-down.
+     * @callback module:jQueryPluginDBox.SelectChangeListener
+     * @returns {undefined}
+     */
+
+    /**
+    * @param {"alert"|"prompt"|"select"|"process"} type
+    * @param {string} msg
+    * @param {string} [defaultVal]
+    * @param {module:jQueryPluginDBox.SelectOption[]} [opts]
+    * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]
+    * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+    function dbox(type, msg, defaultVal, opts, changeListener, checkbox) {
+      dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
+      btnHolder.empty();
+      var ok = $('<input type="button" value="' + strings.ok + '">').appendTo(btnHolder);
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        if (type !== 'alert') {
+          $('<input type="button" value="' + strings.cancel + '">').appendTo(btnHolder).click(function () {
+            box.hide();
+            resolve(false);
+          });
+        }
+
+        var ctrl, chkbx;
+
+        if (type === 'prompt') {
+          ctrl = $('<input type="text">').prependTo(btnHolder);
+          ctrl.val(defaultVal || '');
+          ctrl.bind('keydown', 'return', function () {
+            ok.click();
+          });
+        } else if (type === 'select') {
+          var div = $('<div style="text-align:center;">');
+          ctrl = $('<select>').appendTo(div);
+
+          if (checkbox) {
+            var label = $('<label>').text(checkbox.label);
+            chkbx = $('<input type="checkbox">').appendTo(label);
+            chkbx.val(checkbox.value);
+
+            if (checkbox.tooltip) {
+              label.attr('title', checkbox.tooltip);
+            }
+
+            chkbx.prop('checked', Boolean(checkbox.checked));
+            div.append($('<div>').append(label));
+          }
+
+          $.each(opts || [], function (opt, val) {
+            if (_typeof(val) === 'object') {
+              ctrl.append($('<option>').val(val.value).html(val.text));
+            } else {
+              ctrl.append($('<option>').html(val));
+            }
+          });
+          dialogContent.append(div);
+
+          if (defaultVal) {
+            ctrl.val(defaultVal);
+          }
+
+          if (changeListener) {
+            ctrl.bind('change', 'return', changeListener);
+          }
+
+          ctrl.bind('keydown', 'return', function () {
+            ok.click();
+          });
+        } else if (type === 'process') {
+          ok.hide();
+        }
+
+        box.show();
+        ok.click(function () {
+          box.hide();
+          var response = type === 'prompt' || type === 'select' ? ctrl.val() : true;
+
+          if (chkbx) {
+            resolve({
+              response: response,
+              checked: chkbx.prop('checked')
+            });
+            return;
+          }
+
+          resolve(response);
+        }).focus();
+
+        if (type === 'prompt' || type === 'select') {
+          ctrl.focus();
+        }
+      });
+    }
+    /**
+    * @param {string} msg Message to alert
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.alert = function (msg) {
+      return dbox('alert', msg);
+    };
+    /**
+    * @param {string} msg Message for which to ask confirmation
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.confirm = function (msg) {
+      return dbox('confirm', msg);
+    };
+    /**
+    * @param {string} msg Message to indicate upon cancelable indicator
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.process_cancel = function (msg) {
+      return dbox('process', msg);
+    };
+    /**
+    * @param {string} msg Message to accompany the prompt
+    * @param {string} [defaultText=''] The default text to show for the prompt
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.prompt = function (msg) {
+      var defaultText = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
+      return dbox('prompt', msg, defaultText);
+    };
+
+    $.select = function (msg, opts, changeListener, txt, checkbox) {
+      return dbox('select', msg, txt, opts, changeListener, checkbox);
+    };
+
+    return $;
+  }
+
   var $$4 = jQuery;
   /**
    * This class encapsulates the concept of a layer in the drawing. It can be constructed with
@@ -9597,7 +9872,7 @@
       value: function getOpacity() {
         var opacity = this.group_.getAttribute('opacity');
 
-        if (opacity === null || opacity === undefined) {
+        if (isNullish(opacity)) {
           return 1;
         }
 
@@ -9682,7 +9957,6 @@
       }
       /**
        * Remove this layer's group from the DOM. No more functions on group can be called after this.
-       * @param {SVGGElement} children - The children to append to this layer.
        * @returns {SVGGElement} The layer SVG group that was just removed.
        */
 
@@ -9719,7 +9993,7 @@
   function addLayerClass(elem) {
     var classes = elem.getAttribute('class');
 
-    if (classes === null || classes === undefined || !classes.length) {
+    if (isNullish(classes) || !classes.length) {
       elem.setAttribute('class', Layer.CLASS_NAME);
     } else if (!Layer.CLASS_REGEX.test(classes)) {
       elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);
@@ -9809,8 +10083,8 @@
         if (this.currentBatchCommand_) {
           var batchCommand = this.currentBatchCommand_;
           this.batchCommandStack_.pop();
-          var length = this.batchCommandStack_.length;
-          this.currentBatchCommand_ = length ? this.batchCommandStack_[length - 1] : null;
+          var len = this.batchCommandStack_.length;
+          this.currentBatchCommand_ = len ? this.batchCommandStack_[len - 1] : null;
           this.addCommand_(batchCommand);
         }
 
@@ -9893,7 +10167,7 @@
        * Private function to add a command to the history or current batch command.
        * @private
        * @param {Command} cmd
-       * @returns {module:history.HistoryRecordingService}
+       * @returns {module:history.HistoryRecordingService|undefined}
        */
 
     }, {
@@ -9908,6 +10182,8 @@
         } else {
           this.undoManager_.addCommandToHistory(cmd);
         }
+
+        return undefined;
       }
     }]);
 
@@ -10046,7 +10322,7 @@
       var n = this.svgElem_.getAttributeNS(NS.SE, 'nonce'); // If already set in the DOM, use the nonce throughout the document
       // else, if randomizeIds(true) has been called, create and set the nonce.
 
-      if (!!n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
+      if (n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
         this.nonce_ = n;
       } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {
         this.setNonce(Math.floor(Math.random() * 100001));
@@ -10181,7 +10457,7 @@
         } // extract the obj_num of this id
 
 
-        var num = parseInt(id.substr(front.length), 10); // if we didn't get a positive number or we already released this number
+        var num = parseInt(id.substr(front.length)); // if we didn't get a positive number or we already released this number
         // then return false.
 
         if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {
@@ -10683,10 +10959,10 @@
     }, {
       key: "copyElem",
       value: function copyElem$$1(el) {
-        var self = this;
+        var that = this;
 
         var getNextIdClosure = function getNextIdClosure() {
-          return self.getNextId();
+          return that.getNextId();
         };
 
         return copyElem(el, getNextIdClosure);
@@ -11083,26 +11359,6 @@
     canvas_.call('contextset', canvas_.getCurrentGroup());
   };
 
-  var draw = /*#__PURE__*/Object.freeze({
-    Drawing: Drawing,
-    randomizeIds: randomizeIds,
-    init: init$3,
-    identifyLayers: identifyLayers,
-    createLayer: createLayer,
-    cloneLayer: cloneLayer,
-    deleteCurrentLayer: deleteCurrentLayer,
-    setCurrentLayer: setCurrentLayer,
-    renameCurrentLayer: renameCurrentLayer,
-    setCurrentLayerPosition: setCurrentLayerPosition,
-    setLayerVisibility: setLayerVisibility,
-    moveSelectedToLayer: moveSelectedToLayer,
-    mergeLayer: mergeLayer,
-    mergeAllLayers: mergeAllLayers,
-    leaveContext: leaveContext,
-    setContext: setContext,
-    Layer: Layer
-  });
-
   var REVERSE_NS = getReverseNS(); // this defines which elements and attributes that we support
 
   var svgWhiteList_ = {
@@ -11244,7 +11500,7 @@
         var attrNsURI = attr.namespaceURI; // Check that an attribute with the correct localName in the correct namespace is on
         // our whitelist or is a namespace declaration for one of our allowed namespaces
 
-        if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
+        if (!({}.hasOwnProperty.call(allowedAttrsNS, attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
           // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.
           // Bypassing the whitelist to allow se: prefixes.
           // Is there a more appropriate way to do this?
@@ -11261,9 +11517,11 @@
             case 'transform':
             case 'gradientTransform':
             case 'patternTransform':
-              var val = attr.value.replace(/(\d)-/g, '$1 -');
-              node.setAttribute(attrName, val);
-              break;
+              {
+                var val = attr.value.replace(/(\d)-/g, '$1 -');
+                node.setAttribute(attrName, val);
+                break;
+              }
           }
         } // For the style attribute, rewrite it in terms of XML presentational attributes
 
@@ -11359,7 +11617,6 @@
     }
   };
 
-  /* globals jQuery */
   var $$6 = jQuery; // this is how we map paths to our preferred relative segment types
 
   var pathMap$1 = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a', 'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];
@@ -11411,9 +11668,13 @@
         doSnapping = editorContext_$2.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',
         finishUp = function finishUp() {
       if (doSnapping) {
-        for (var o in changes) {
-          changes[o] = snapToGrid(changes[o]);
-        }
+        Object.entries(changes).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              o = _ref2[0],
+              value = _ref2[1];
+
+          changes[o] = snapToGrid(value);
+        });
       }
 
       assignAttributes(selected, changes, 1000, true);
@@ -11727,7 +11988,7 @@
 
               case 10:
                 // absolute elliptical arc (A)
-                dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + +_seg2.largeArcFlag + ' ' + +_seg2.sweepFlag + ' ' + _seg2.x + ',' + _seg2.y + ' ';
+                dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + Number(_seg2.largeArcFlag) + ' ' + Number(_seg2.sweepFlag) + ' ' + _seg2.x + ',' + _seg2.y + ' ';
                 break;
 
               case 17: // relative smooth cubic (s)
@@ -11746,7 +12007,7 @@
   };
 
   /* globals jQuery */
-  var $$7 = jqPluginSVG(jQuery);
+  var $$7 = jQueryPluginSVG(jQuery);
   var context_;
   /**
   * @interface module:recalculate.EditorContext
@@ -11803,7 +12064,7 @@
   */
 
   var recalculateDimensions = function recalculateDimensions(selected) {
-    if (selected == null) {
+    if (isNullish(selected)) {
       return null;
     } // Firefox Issue - 1081
 
@@ -11989,7 +12250,7 @@
     // make a copy of initial values and include the transform
 
 
-    if (initial == null) {
+    if (isNullish(initial)) {
       initial = $$7.extend(true, {}, changes);
       $$7.each(initial, function (attr, val) {
         initial[attr] = convertToNum(attr, val);
@@ -12595,7 +12856,8 @@
         // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]
 
       } else if (_operation === 3 && _angle) {
-        var _m6 = transformListToTransform(tlist).matrix;
+        var _transformListToTrans = transformListToTransform(tlist),
+            matrix = _transformListToTrans.matrix;
 
         var _roldt = svgroot.createSVGTransform();
 
@@ -12609,9 +12871,9 @@
 
         var _rnewInv = _rnew.matrix.inverse();
 
-        var _mInv2 = _m6.inverse();
+        var _mInv2 = matrix.inverse();
 
-        var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, _m6);
+        var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, matrix);
 
         remapElement(selected, changes, _extrat);
 
@@ -12712,39 +12974,6 @@
         this.selectorGroup.setAttribute('display', 'inline');
       }
       /**
-      * Updates cursors for corner grips on rotation so arrows point the right way.
-      * @param {Float} angle - Current rotation angle in degrees
-      * @returns {undefined}
-      */
-
-    }, {
-      key: "updateGripCursors",
-      value: function updateGripCursors(angle) {
-        var dir;
-        var dirArr = [];
-        var steps = Math.round(angle / 45);
-
-        if (steps < 0) {
-          steps += 8;
-        }
-
-        for (dir in selectorManager_.selectorGrips) {
-          dirArr.push(dir);
-        }
-
-        while (steps > 0) {
-          dirArr.push(dirArr.shift());
-          steps--;
-        }
-
-        var i = 0;
-
-        for (dir in selectorManager_.selectorGrips) {
-          selectorManager_.selectorGrips[dir].setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
-          i++;
-        }
-      }
-      /**
       * Show the resize grips of this selector.
       * @param {boolean} show - Indicates whether grips should be shown or not
       * @returns {undefined}
@@ -12760,7 +12989,7 @@
 
         if (elem && show) {
           this.selectorGroup.append(selectorManager_.selectorGripsGroup);
-          this.updateGripCursors(getRotationAngle(elem));
+          Selector.updateGripCursors(getRotationAngle(elem));
         }
       }
       /**
@@ -12877,13 +13106,14 @@
           e: [nbax + nbaw, nbay + nbah / 2],
           s: [nbax + nbaw / 2, nbay + nbah]
         };
+        Object.entries(this.gripCoords).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              dir = _ref2[0],
+              coords = _ref2[1];
 
-        for (var dir in this.gripCoords) {
-          var coords = this.gripCoords[dir];
           selectedGrips[dir].setAttribute('cx', coords[0]);
           selectedGrips[dir].setAttribute('cy', coords[1]);
-        } // we want to go 20 pixels in the negative transformed y direction, ignoring scale
-
+        }); // we want to go 20 pixels in the negative transformed y direction, ignoring scale
 
         mgr.rotateGripConnector.setAttribute('x1', nbax + nbaw / 2);
         mgr.rotateGripConnector.setAttribute('y1', nbay);
@@ -12897,9 +13127,33 @@
     return Selector;
   }();
   /**
+  * Updates cursors for corner grips on rotation so arrows point the right way.
+  * @param {Float} angle - Current rotation angle in degrees
+  * @returns {undefined}
+  */
+
+  Selector.updateGripCursors = function (angle) {
+    var dirArr = Object.keys(selectorManager_.selectorGrips);
+    var steps = Math.round(angle / 45);
+
+    if (steps < 0) {
+      steps += 8;
+    }
+
+    while (steps > 0) {
+      dirArr.push(dirArr.shift());
+      steps--;
+    }
+
+    Object.values(selectorManager_.selectorGrips).forEach(function (gripElement, i) {
+      gripElement.setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
+    });
+  };
+  /**
   * Manage all selector objects (selection boxes).
   */
 
+
   var SelectorManager =
   /*#__PURE__*/
   function () {
@@ -12939,6 +13193,8 @@
     _createClass(SelectorManager, [{
       key: "initGroup",
       value: function initGroup() {
+        var _this = this;
+
         // remove old selector parent group if it existed
         if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {
           this.selectorParentGroup.remove();
@@ -12963,7 +13219,7 @@
         this.selectors = [];
         this.rubberBandBox = null; // add the corner grips
 
-        for (var dir in this.selectorGrips) {
+        Object.keys(this.selectorGrips).forEach(function (dir) {
           var grip = svgFactory_.createSVGElement({
             element: 'circle',
             attr: {
@@ -12981,9 +13237,8 @@
           });
           $$8.data(grip, 'dir', dir);
           $$8.data(grip, 'type', 'resize');
-          this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);
-        } // add rotator elems
-
+          _this.selectorGrips[dir] = _this.selectorGripsGroup.appendChild(grip);
+        }); // add rotator elems
 
         this.rotateGripConnector = this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({
           element: 'line',
@@ -13056,7 +13311,7 @@
     }, {
       key: "requestSelector",
       value: function requestSelector(elem, bbox) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return null;
         }
 
@@ -13092,7 +13347,7 @@
     }, {
       key: "releaseSelector",
       value: function releaseSelector(elem) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return;
         }
 
@@ -13101,7 +13356,7 @@
 
         if (!sel.locked) {
           // TODO(codedread): Ensure this exists in this module.
-          console.log('WARNING! selector was released but was already unlocked');
+          console.log('WARNING! selector was released but was already unlocked'); // eslint-disable-line no-console
         }
 
         for (var i = 0; i < N; ++i) {
@@ -13210,7 +13465,7 @@
     return selectorManager_;
   };
 
-  var $$9 = jqPluginSVG(jQuery);
+  var $$9 = jQueryPluginSVG(jQuery);
   var MoveElementCommand$1 = MoveElementCommand,
       InsertElementCommand$1 = InsertElementCommand,
       RemoveElementCommand$1 = RemoveElementCommand,
@@ -13222,9 +13477,13 @@
   if (!window.console) {
     window.console = {};
 
-    window.console.log = function (str) {};
+    window.console.log = function (str) {
+      /* */
+    };
 
-    window.console.dir = function (str) {};
+    window.console.dir = function (str) {
+      /* */
+    };
   }
 
   if (window.opera) {
@@ -13232,7 +13491,9 @@
       window.opera.postError(str);
     };
 
-    window.console.dir = function (str) {};
+    window.console.dir = function (str) {
+      /* */
+    };
   }
   /**
   * The main SvgCanvas class that manages all SVG-related functions.
@@ -13286,7 +13547,8 @@
 
 
     var dimensions = curConfig.dimensions;
-    var canvas = this; // "document" element associated with the container (same as window.document using default svg-editor.js)
+    var canvas = this; // eslint-disable-line consistent-this
+    // "document" element associated with the container (same as window.document using default svg-editor.js)
     // NOTE: This is not actually a SVG document, but an HTML document.
 
     var svgdoc = container.ownerDocument; // This is a container for the document being edited, not the document itself.
@@ -13662,10 +13924,8 @@
               if (isApply) {
                 restoreRefElems(cmd.elem);
               }
-            } else {
-              if (!isApply) {
-                restoreRefElems(cmd.elem);
-              }
+            } else if (!isApply) {
+              restoreRefElems(cmd.elem);
             }
 
             if (cmd.elem.tagName === 'use') {
@@ -13727,7 +13987,7 @@
 
 
     var round = this.round = function (val) {
-      return parseInt(val * currentZoom, 10) / currentZoom;
+      return parseInt(val * currentZoom) / currentZoom;
     };
 
     init$6(curConfig,
@@ -13777,7 +14037,7 @@
     * @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}
     * @param {"selected"|"changed"|"contextset"|"pointsAdded"|"extension_added"|"extensions_added"|"message"|"transition"|"zoomed"|"updateCanvas"|"zoomDone"|"saved"|"exported"|"exportedPDF"|"setnonce"|"unsetnonce"|"cleared"} ev - String with the event name
     * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.
-    * @returns {undefined}
+    * @returns {module:svgcanvas.EventHandlerReturn|undefined}
     */
 
 
@@ -13785,6 +14045,8 @@
       if (events[ev]) {
         return events[ev](window, arg);
       }
+
+      return undefined;
     };
     /**
     * Clears the selection. The 'selected' handler is then optionally called.
@@ -13797,7 +14059,7 @@
 
     var clearSelection = this.clearSelection = function (noCall) {
       selectedElements.forEach(function (elem) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return;
         }
 
@@ -13826,7 +14088,7 @@
       var j = 0;
 
       while (j < selectedElements.length) {
-        if (selectedElements[j] == null) {
+        if (isNullish(selectedElements[j])) {
           break;
         }
 
@@ -13880,15 +14142,17 @@
 
       selectedElements.sort(function (a, b) {
         if (a && b && a.compareDocumentPosition) {
-          return 3 - (b.compareDocumentPosition(a) & 6);
+          return 3 - (b.compareDocumentPosition(a) & 6); // eslint-disable-line no-bitwise
         }
 
-        if (a == null) {
+        if (isNullish(a)) {
           return 1;
         }
+
+        return 0;
       }); // Make sure first elements are not null
 
-      while (selectedElements[0] == null) {
+      while (isNullish(selectedElements[0])) {
         selectedElements.shift(0);
       }
     };
@@ -13907,7 +14171,7 @@
 
 
     var getMouseTarget = this.getMouseTarget = function (evt) {
-      if (evt == null) {
+      if (isNullish(evt)) {
         return null;
       }
 
@@ -14012,8 +14276,9 @@
       },
 
       /**
-       * @param {boolean} closedSubpath
-       * @param {SVGCircleElement[]} grips
+       * @param {PlainObject} ptsInfo
+       * @param {boolean} ptsInfo.closedSubpath
+       * @param {SVGCircleElement[]} ptsInfo.grips
        * @fires module:svgcanvas.SvgCanvas#event:pointsAdded
        * @fires module:svgcanvas.SvgCanvas#event:selected
        * @returns {undefined}
@@ -14032,8 +14297,9 @@
       },
 
       /**
-       * @param {ChangeElementCommand} cmd
-       * @param {SVGPathElement} elem
+       * @param {PlainObject} changes
+       * @param {ChangeElementCommand} changes.cmd
+       * @param {SVGPathElement} changes.elem
        * @fires module:svgcanvas.SvgCanvas#event:changed
        * @returns {undefined}
        */
@@ -14080,10 +14346,7 @@
     var restoreRefElems = function restoreRefElems(elem) {
       // Look for missing reference elements, restore any found
       var attrs = $$9(elem).attr(refAttrs);
-
-      for (var o in attrs) {
-        var val = attrs[o];
-
+      Object.values(attrs).forEach(function (val) {
         if (val && val.startsWith('url(')) {
           var id = getUrlFromAttr(val).substr(1);
           var ref = getElem(id);
@@ -14093,8 +14356,7 @@
             delete removedElements[id];
           }
         }
-      }
-
+      });
       var childs = elem.getElementsByTagName('*');
 
       if (childs.length) {
@@ -14159,6 +14421,12 @@
     curBBoxes = [],
         // Canvas point for the most recent right click
     lastClickPoint = null;
+
+    this.runExtension = function (name, action, vars) {
+      return this.runExtensions(action, vars, false, function (n) {
+        return n === name;
+      });
+    };
     /**
     * @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus
     * @tutorial ExtensionDocs
@@ -14167,6 +14435,13 @@
     /**
     * @callback module:svgcanvas.ExtensionVarBuilder
     * @param {string} name The name of the extension
+    * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}
+    */
+
+    /**
+    * @callback module:svgcanvas.ExtensionNameFilter
+    * @param {string} name
+    * @returns {boolean}
     */
 
     /**
@@ -14176,12 +14451,18 @@
     * @param {"mouseDown"|"mouseMove"|"mouseUp"|"zoomChanged"|"IDsUpdated"|"canvasUpdated"|"toolButtonStateUpdate"|"selectedChanged"|"elementTransition"|"elementChanged"|"langReady"|"langChanged"|"addLangData"|"onNewDocument"|"workareaResized"} action
     * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]
     * @param {boolean} [returnArray]
+    * @param {module:svgcanvas.ExtensionNameFilter} nameFilter
     * @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.
     */
 
-    var runExtensions = this.runExtensions = function (action, vars, returnArray) {
+
+    var runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {
       var result = returnArray ? [] : false;
       $$9.each(extensions, function (name, ext) {
+        if (nameFilter && !nameFilter(name)) {
+          return;
+        }
+
         if (ext && action in ext) {
           if (typeof vars === 'function') {
             vars = vars(name); // ext, action
@@ -14331,7 +14612,8 @@
     * @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data
     * @param {module:SVGEditor~ImportLocale} importLocale
     * @fires module:svgcanvas.SvgCanvas#event:extension_added
-    * @throws {TypeError} If `extInitFunc` is not a function
+    * @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`
+    *   if extension of supplied name already exists
     * @returns {Promise} Resolves to `undefined`
     */
 
@@ -14355,11 +14637,14 @@
                 throw new TypeError('Function argument expected for `svgcanvas.addExtension`');
 
               case 2:
-                if (name in extensions) {
-                  _context.next = 12;
+                if (!(name in extensions)) {
+                  _context.next = 4;
                   break;
                 }
 
+                throw new Error('Cannot add extension "' + name + '", an extension by that name already exists.');
+
+              case 4:
                 // Provide private vars/funcs here. Is there a better way to do this?
 
                 /**
@@ -14376,16 +14661,17 @@
                  * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties
                  */
                 argObj = $$9.extend(canvas.getPrivateMethods(), {
+                  $: $$9,
                   importLocale: importLocale,
                   svgroot: svgroot,
                   svgcontent: svgcontent,
                   nonce: getCurrentDrawing().getNonce(),
                   selectorManager: selectorManager
                 });
-                _context.next = 6;
+                _context.next = 7;
                 return extInitFunc(argObj);
 
-              case 6:
+              case 7:
                 extObj = _context.sent;
 
                 if (extObj) {
@@ -14395,10 +14681,7 @@
                 extensions[name] = extObj;
                 return _context.abrupt("return", call('extension_added', extObj));
 
-              case 12:
-                console.log('Cannot add extension "' + name + '", an extension by that name already exists.');
-
-              case 13:
+              case 11:
               case "end":
                 return _context.stop();
             }
@@ -14425,7 +14708,7 @@
 
 
     var getIntersectionList = this.getIntersectionList = function (rect) {
-      if (rubberBox == null) {
+      if (isNullish(rubberBox)) {
         return null;
       }
 
@@ -14435,11 +14718,9 @@
       if (!rect) {
         rubberBBox = rubberBox.getBBox();
         var bb = svgcontent.createSVGRect();
-
-        for (var o in rubberBBox) {
+        ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach(function (o) {
           bb[o] = rubberBBox[o] / currentZoom;
-        }
-
+        });
         rubberBBox = bb;
       } else {
         rubberBBox = svgcontent.createSVGRect();
@@ -14454,13 +14735,13 @@
       if (!isIE) {
         if (typeof svgroot.getIntersectionList === 'function') {
           // Offset the bbox of the rubber box by the offset of the svgcontent element.
-          rubberBBox.x += parseInt(svgcontent.getAttribute('x'), 10);
-          rubberBBox.y += parseInt(svgcontent.getAttribute('y'), 10);
+          rubberBBox.x += parseInt(svgcontent.getAttribute('x'));
+          rubberBBox.y += parseInt(svgcontent.getAttribute('y'));
           resultList = svgroot.getIntersectionList(rubberBBox, parent);
         }
       }
 
-      if (resultList == null || typeof resultList.item !== 'function') {
+      if (isNullish(resultList) || typeof resultList.item !== 'function') {
         resultList = [];
 
         if (!curBBoxes.length) {
@@ -14661,11 +14942,18 @@
      * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}
      */
 
+    /**
+     * The promise return, if present, resolves to `undefined`
+     *  (`extension_added`, `exported`, `saved`)
+     * @typedef {Promise|undefined} module:svgcanvas.EventHandlerReturn
+    */
+
     /**
     * @callback module:svgcanvas.EventHandler
     * @param {external:Window} win
     * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg
     * @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent
+    * @returns {module:svgcanvas.EventHandlerReturn}
     */
 
     /**
@@ -14789,7 +15077,7 @@
 
       var selector = selectorManager.requestSelector(selectedElements[0]);
       selector.resize();
-      selector.updateGripCursors(val);
+      Selector.updateGripCursors(val);
     };
     /**
     * Runs `recalculateDimensions` on the selected elements,
@@ -14829,7 +15117,7 @@
 
 
     var logMatrix = function logMatrix(m) {
-      console.log([m.a, m.b, m.c, m.d, m.e, m.f]);
+      console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console
     }; // Root Current Transformation Matrix in user units
 
 
@@ -14864,7 +15152,7 @@
 
 
     this.removeFromSelection = function (elemsToRemove) {
-      if (selectedElements[0] == null) {
+      if (isNullish(selectedElements[0])) {
         return;
       }
 
@@ -15036,7 +15324,7 @@
         // set the mouseTarget to that and update the mode to rotate/resize
 
 
-        if (mouseTarget === selectorManager.selectorParentGroup && selectedElements[0] != null) {
+        if (mouseTarget === selectorManager.selectorParentGroup && !isNullish(selectedElements[0])) {
           var grip = evt.target;
           var griptype = elData(grip, 'type'); // rotating
 
@@ -15051,7 +15339,6 @@
         }
 
         startTransform = mouseTarget.getAttribute('transform');
-        var i, strokeW;
         var tlist = getTransformList(mouseTarget);
 
         switch (currentMode) {
@@ -15082,8 +15369,8 @@
               if (!rightClick) {
                 // insert a dummy transform so if the element(s) are moved it will have
                 // a transform to use for its translate
-                for (i = 0; i < selectedElements.length; ++i) {
-                  if (selectedElements[i] == null) {
+                for (var i = 0; i < selectedElements.length; ++i) {
+                  if (isNullish(selectedElements[i])) {
                     continue;
                   }
 
@@ -15100,7 +15387,7 @@
               clearSelection();
               currentMode = 'multiselect';
 
-              if (rubberBox == null) {
+              if (isNullish(rubberBox)) {
                 rubberBox = selectorManager.getRubberBandBox();
               }
 
@@ -15124,7 +15411,7 @@
           case 'zoom':
             started = true;
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = selectorManager.getRubberBandBox();
             }
 
@@ -15138,75 +15425,77 @@
             break;
 
           case 'resize':
-            started = true;
-            startX = x;
-            startY = y; // Getting the BBox from the selection box, since we know we
-            // want to orient around it
+            {
+              started = true;
+              startX = x;
+              startY = y; // Getting the BBox from the selection box, since we know we
+              // want to orient around it
 
-            initBbox = getBBox($$9('#selectedBox0')[0]);
-            var bb = {};
-            $$9.each(initBbox, function (key, val) {
-              bb[key] = val / currentZoom;
-            });
-            initBbox = bb; // append three dummy transforms to the tlist so that
-            // we can translate,scale,translate in mousemove
+              initBbox = getBBox($$9('#selectedBox0')[0]);
+              var bb = {};
+              $$9.each(initBbox, function (key, val) {
+                bb[key] = val / currentZoom;
+              });
+              initBbox = bb; // append three dummy transforms to the tlist so that
+              // we can translate,scale,translate in mousemove
 
-            var pos = getRotationAngle(mouseTarget) ? 1 : 0;
+              var pos = getRotationAngle(mouseTarget) ? 1 : 0;
 
-            if (hasMatrixTransform(tlist)) {
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-            } else {
-              tlist.appendItem(svgroot.createSVGTransform());
-              tlist.appendItem(svgroot.createSVGTransform());
-              tlist.appendItem(svgroot.createSVGTransform());
+              if (hasMatrixTransform(tlist)) {
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+              } else {
+                tlist.appendItem(svgroot.createSVGTransform());
+                tlist.appendItem(svgroot.createSVGTransform());
+                tlist.appendItem(svgroot.createSVGTransform());
 
-              if (supportsNonScalingStroke()) {
-                // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
-                // https://code.google.com/p/svg-edit/issues/detail?id=904
-                // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
-                // TODO: Remove this workaround once vendor fixes the issue
-                var iswebkit = isWebkit();
-                var delayedStroke;
-
-                if (iswebkit) {
-                  delayedStroke = function delayedStroke(ele) {
-                    var _stroke = ele.getAttribute('stroke');
-
-                    ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
-
-                    if (_stroke !== null) setTimeout(function () {
-                      ele.setAttribute('stroke', _stroke);
-                    }, 0);
-                  };
-                }
-
-                mouseTarget.style.vectorEffect = 'non-scaling-stroke';
-
-                if (iswebkit) {
-                  delayedStroke(mouseTarget);
-                }
-
-                var all = mouseTarget.getElementsByTagName('*'),
-                    len = all.length;
-
-                for (i = 0; i < len; i++) {
-                  if (!all[i].style) {
-                    // mathML
-                    continue;
-                  }
-
-                  all[i].style.vectorEffect = 'non-scaling-stroke';
+                if (supportsNonScalingStroke()) {
+                  // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
+                  // https://code.google.com/p/svg-edit/issues/detail?id=904
+                  // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
+                  // TODO: Remove this workaround once vendor fixes the issue
+                  var iswebkit = isWebkit();
+                  var delayedStroke;
 
                   if (iswebkit) {
-                    delayedStroke(all[i]);
+                    delayedStroke = function delayedStroke(ele) {
+                      var _stroke = ele.getAttribute('stroke');
+
+                      ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
+
+                      if (_stroke !== null) setTimeout(function () {
+                        ele.setAttribute('stroke', _stroke);
+                      }, 0);
+                    };
+                  }
+
+                  mouseTarget.style.vectorEffect = 'non-scaling-stroke';
+
+                  if (iswebkit) {
+                    delayedStroke(mouseTarget);
+                  }
+
+                  var all = mouseTarget.getElementsByTagName('*'),
+                      len = all.length;
+
+                  for (var _i2 = 0; _i2 < len; _i2++) {
+                    if (!all[_i2].style) {
+                      // mathML
+                      continue;
+                    }
+
+                    all[_i2].style.vectorEffect = 'non-scaling-stroke';
+
+                    if (iswebkit) {
+                      delayedStroke(all[_i2]);
+                    }
                   }
                 }
               }
-            }
 
-            break;
+              break;
+            }
 
           case 'fhellipse':
           case 'fhrect':
@@ -15236,22 +15525,24 @@
             break;
 
           case 'image':
-            started = true;
-            var newImage = addSVGElementFromJson({
-              element: 'image',
-              attr: {
-                x: x,
-                y: y,
-                width: 0,
-                height: 0,
-                id: getNextId(),
-                opacity: curShape.opacity / 2,
-                style: 'pointer-events:inherit'
-              }
-            });
-            setHref(newImage, lastGoodImgUrl);
-            preventClickDefault(newImage);
-            break;
+            {
+              started = true;
+              var newImage = addSVGElementFromJson({
+                element: 'image',
+                attr: {
+                  x: x,
+                  y: y,
+                  width: 0,
+                  height: 0,
+                  id: getNextId(),
+                  opacity: curShape.opacity / 2,
+                  style: 'pointer-events:inherit'
+                }
+              });
+              setHref(newImage, lastGoodImgUrl);
+              preventClickDefault(newImage);
+              break;
+            }
 
           case 'square': // FIXME: once we create the rect, we lose information that this was a square
           // (for resizing purposes this could be important)
@@ -15276,29 +15567,31 @@
             break;
 
           case 'line':
-            started = true;
-            strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
-            addSVGElementFromJson({
-              element: 'line',
-              curStyles: true,
-              attr: {
-                x1: x,
-                y1: y,
-                x2: x,
-                y2: y,
-                id: getNextId(),
-                stroke: curShape.stroke,
-                'stroke-width': strokeW,
-                'stroke-dasharray': curShape.stroke_dasharray,
-                'stroke-linejoin': curShape.stroke_linejoin,
-                'stroke-linecap': curShape.stroke_linecap,
-                'stroke-opacity': curShape.stroke_opacity,
-                fill: 'none',
-                opacity: curShape.opacity / 2,
-                style: 'pointer-events:none'
-              }
-            });
-            break;
+            {
+              started = true;
+              var strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
+              addSVGElementFromJson({
+                element: 'line',
+                curStyles: true,
+                attr: {
+                  x1: x,
+                  y1: y,
+                  x2: x,
+                  y2: y,
+                  id: getNextId(),
+                  stroke: curShape.stroke,
+                  'stroke-width': strokeW,
+                  'stroke-dasharray': curShape.stroke_dasharray,
+                  'stroke-linejoin': curShape.stroke_linejoin,
+                  'stroke-linecap': curShape.stroke_linecap,
+                  'stroke-opacity': curShape.stroke_opacity,
+                  fill: 'none',
+                  opacity: curShape.opacity / 2,
+                  style: 'pointer-events:none'
+                }
+              });
+              break;
+            }
 
           case 'circle':
             started = true;
@@ -15482,7 +15775,7 @@
                   for (i = 0; i < len; ++i) {
                     selected = selectedElements[i];
 
-                    if (selected == null) {
+                    if (isNullish(selected)) {
                       break;
                     } // if (i === 0) {
                     //   const box = utilsGetBBox(selected);
@@ -15834,9 +16127,7 @@
               break; // update path stretch line coordinates
             }
 
-          case 'path':
-
-          // fall through
+          case 'path': // fall through
 
           case 'pathedit':
             {
@@ -15993,7 +16284,7 @@
           // intentionally fall-through to select here
           case 'resize':
           case 'multiselect':
-            if (rubberBox != null) {
+            if (!isNullish(rubberBox)) {
               rubberBox.setAttribute('display', 'none');
               curBBoxes = [];
             }
@@ -16002,9 +16293,9 @@
           // Fallthrough
 
           case 'select':
-            if (selectedElements[0] != null) {
+            if (!isNullish(selectedElements[0])) {
               // if we only have one selected element
-              if (selectedElements[1] == null) {
+              if (isNullish(selectedElements[1])) {
                 // set our current stroke/fill properties to the element's
                 var selected = selectedElements[0];
 
@@ -16042,7 +16333,7 @@
                 var len = selectedElements.length;
 
                 for (var i = 0; i < len; ++i) {
-                  if (selectedElements[i] == null) {
+                  if (isNullish(selectedElements[i])) {
                     break;
                   }
 
@@ -16055,7 +16346,7 @@
               } else {
                 t = evt.target;
 
-                if (selectedElements[0].nodeName === 'path' && selectedElements[1] == null) {
+                if (selectedElements[0].nodeName === 'path' && isNullish(selectedElements[1])) {
                   pathActions$$1.select(selectedElements[0]); // if it was a path
                   // else, if it was selected and this is a shift-click, remove it from selection
                 } else if (evt.shiftKey) {
@@ -16072,8 +16363,8 @@
 
                 if (elem) {
                   elem.removeAttribute('style');
-                  walkTree(elem, function (elem) {
-                    elem.removeAttribute('style');
+                  walkTree(elem, function (el) {
+                    el.removeAttribute('style');
                   });
                 }
               }
@@ -16082,57 +16373,61 @@
             return;
 
           case 'zoom':
-            if (rubberBox != null) {
-              rubberBox.setAttribute('display', 'none');
-            }
+            {
+              if (!isNullish(rubberBox)) {
+                rubberBox.setAttribute('display', 'none');
+              }
 
-            var factor = evt.shiftKey ? 0.5 : 2;
-            call('zoomed', {
-              x: Math.min(rStartX, realX),
-              y: Math.min(rStartY, realY),
-              width: Math.abs(realX - rStartX),
-              height: Math.abs(realY - rStartY),
-              factor: factor
-            });
-            return;
+              var factor = evt.shiftKey ? 0.5 : 2;
+              call('zoomed', {
+                x: Math.min(rStartX, realX),
+                y: Math.min(rStartY, realY),
+                width: Math.abs(realX - rStartX),
+                height: Math.abs(realY - rStartY),
+                factor: factor
+              });
+              return;
+            }
 
           case 'fhpath':
-            // Check that the path contains at least 2 points; a degenerate one-point path
-            // causes problems.
-            // Webkit ignores how we set the points attribute with commas and uses space
-            // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
-            sumDistance = 0;
-            controllPoint2 = {
-              x: 0,
-              y: 0
-            };
-            controllPoint1 = {
-              x: 0,
-              y: 0
-            };
-            start = {
-              x: 0,
-              y: 0
-            };
-            end = {
-              x: 0,
-              y: 0
-            };
-            var coords = element.getAttribute('points');
-            var commaIndex = coords.indexOf(',');
+            {
+              // Check that the path contains at least 2 points; a degenerate one-point path
+              // causes problems.
+              // Webkit ignores how we set the points attribute with commas and uses space
+              // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
+              sumDistance = 0;
+              controllPoint2 = {
+                x: 0,
+                y: 0
+              };
+              controllPoint1 = {
+                x: 0,
+                y: 0
+              };
+              start = {
+                x: 0,
+                y: 0
+              };
+              end = {
+                x: 0,
+                y: 0
+              };
+              var coords = element.getAttribute('points');
+              var commaIndex = coords.indexOf(',');
 
-            if (commaIndex >= 0) {
-              keep = coords.indexOf(',', commaIndex + 1) >= 0;
-            } else {
-              keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+              if (commaIndex >= 0) {
+                keep = coords.indexOf(',', commaIndex + 1) >= 0;
+              } else {
+                keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+              }
+
+              if (keep) {
+                element = pathActions$$1.smoothPolylineIntoPath(element);
+              }
+
+              break;
             }
 
-            if (keep) {
-              element = pathActions$$1.smoothPolylineIntoPath(element);
-            }
-
-            break;
-
           case 'line':
             attrs = $$9(element).attr(['x1', 'x2', 'y1', 'y2']);
             keep = attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2;
@@ -16201,14 +16496,16 @@
             break;
 
           case 'path':
-            // set element to null here so that it is not removed nor finalized
-            element = null; // continue to be set to true so that mouseMove happens
+            {
+              // set element to null here so that it is not removed nor finalized
+              element = null; // continue to be set to true so that mouseMove happens
 
-            started = true;
-            var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
-            element = res.element;
-            keep = res.keep;
-            break;
+              started = true;
+              var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
+              element = res.element;
+              keep = res.keep;
+              break;
+            }
 
           case 'pathedit':
             keep = true;
@@ -16223,19 +16520,21 @@
             break;
 
           case 'rotate':
-            keep = true;
-            element = null;
-            currentMode = 'select';
-            var batchCmd = canvas.undoMgr.finishUndoableChange();
+            {
+              keep = true;
+              element = null;
+              currentMode = 'select';
+              var batchCmd = canvas.undoMgr.finishUndoableChange();
 
-            if (!batchCmd.isEmpty()) {
-              addCommandToHistory(batchCmd);
-            } // perform recalculation to weed out any stray identity transforms that might get stuck
+              if (!batchCmd.isEmpty()) {
+                addCommandToHistory(batchCmd);
+              } // perform recalculation to weed out any stray identity transforms that might get stuck
 
 
-            recalculateAllSelectedDimensions();
-            call('changed', selectedElements);
-            break;
+              recalculateAllSelectedDimensions();
+              call('changed', selectedElements);
+              break;
+            }
 
           default:
             // This could occur in an extension
@@ -16266,7 +16565,7 @@
           }
         });
 
-        if (!keep && element != null) {
+        if (!keep && !isNullish(element)) {
           getCurrentDrawing().releaseId(getId());
           element.remove();
           element = null;
@@ -16286,7 +16585,7 @@
             canvas.setMode('select');
             selectOnly([t], true);
           }
-        } else if (element != null) {
+        } else if (!isNullish(element)) {
           /**
           * @name module:svgcanvas.SvgCanvas#addedNew
           * @type {boolean}
@@ -16418,8 +16717,8 @@
         var workareaViewH = editorH * rootSctm.d; // content offset from canvas in screen pixels
 
         var wOffset = workarea.offset();
-        var wOffsetLeft = wOffset['left'] + rulerwidth;
-        var wOffsetTop = wOffset['top'] + rulerwidth;
+        var wOffsetLeft = wOffset.left + rulerwidth;
+        var wOffsetTop = wOffset.top + rulerwidth;
         var delta = evt.wheelDelta ? evt.wheelDelta : evt.detail ? -evt.detail : 0;
 
         if (!delta) {
@@ -16491,6 +16790,11 @@
       var matrix;
       var lastX, lastY;
       var allowDbl;
+      /**
+       *
+       * @param {Integer} index
+       * @returns {undefined}
+       */
 
       function setCursor(index) {
         var empty = textinput.value === '';
@@ -16548,6 +16852,14 @@
           selblock.setAttribute('d', '');
         }
       }
+      /**
+       *
+       * @param {Integer} start
+       * @param {Integer} end
+       * @param {boolean} skipInput
+       * @returns {undefined}
+       */
+
 
       function setSelection(start, end, skipInput) {
         if (start === end) {
@@ -16585,6 +16897,13 @@
           display: 'inline'
         });
       }
+      /**
+       *
+       * @param {Float} mouseX
+       * @param {Float} mouseY
+       * @returns {Integer}
+       */
+
 
       function getIndexFromPoint(mouseX, mouseY) {
         // Position cursor here
@@ -16619,10 +16938,25 @@
 
         return charpos;
       }
+      /**
+       *
+       * @param {Float} mouseX
+       * @param {Float} mouseY
+       * @returns {undefined}
+       */
+
 
       function setCursorFromPoint(mouseX, mouseY) {
         setCursor(getIndexFromPoint(mouseX, mouseY));
       }
+      /**
+       *
+       * @param {Float} x
+       * @param {Float} y
+       * @param {boolean} apply
+       * @returns {undefined}
+       */
+
 
       function setEndSelectionFromPoint(x, y, apply) {
         var i1 = textinput.selectionStart;
@@ -16631,6 +16965,13 @@
         var end = Math.max(i1, i2);
         setSelection(start, end, !apply);
       }
+      /**
+       *
+       * @param {Float} xIn
+       * @param {Float} yIn
+       * @returns {module:math.XYObject}
+       */
+
 
       function screenToPt(xIn, yIn) {
         var out = {
@@ -16648,6 +16989,13 @@
 
         return out;
       }
+      /**
+       *
+       * @param {Float} xIn
+       * @param {Float} yIn
+       * @returns {module:math.XYObject}
+       */
+
 
       function ptToScreen(xIn, yIn) {
         var out = {
@@ -16674,11 +17022,23 @@
       }
       */
 
+      /**
+       *
+       * @param {Event} evt
+       * @returns {undefined}
+       */
+
 
       function selectAll(evt) {
         setSelection(0, curtext.textContent.length);
         $$9(this).unbind(evt);
       }
+      /**
+       *
+       * @param {Event} evt
+       * @returns {undefined}
+       */
+
 
       function selectWord(evt) {
         if (!allowDbl || !curtext) {
@@ -17008,7 +17368,8 @@
 
     this.svgCanvasToString = function () {
       // keep calling it until there are none to remove
-      while (removeUnusedDefElems() > 0) {}
+      while (removeUnusedDefElems() > 0) {} // eslint-disable-line no-empty
+
 
       pathActions$$1.clear(true); // Keep SVG-Edit comment on top
 
@@ -17069,13 +17430,12 @@
       if (elem) {
         cleanupElement(elem);
         var attrs = Array.from(elem.attributes);
-        var i;
         var childs = elem.childNodes;
         attrs.sort(function (a, b) {
           return a.name > b.name ? -1 : 1;
         });
 
-        for (i = 0; i < indent; i++) {
+        for (var i = 0; i < indent; i++) {
           out.push(' ');
         }
 
@@ -17116,19 +17476,19 @@
             }
 
             $$9.each(this.attributes, function (i, attr) {
-              var uri = attr.namespaceURI;
+              var u = attr.namespaceURI;
 
-              if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {
-                nsuris[uri] = true;
-                out.push(' xmlns:' + nsMap[uri] + '="' + uri + '"');
+              if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {
+                nsuris[u] = true;
+                out.push(' xmlns:' + nsMap[u] + '="' + u + '"');
               }
             });
           });
-          i = attrs.length;
+          var _i3 = attrs.length;
           var attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];
 
-          while (i--) {
-            var attr = attrs[i];
+          while (_i3--) {
+            var attr = attrs[_i3];
             var attrVal = toXml(attr.value); // Namespaces have already been dealt with, so skip
 
             if (attr.nodeName.startsWith('xmlns:')) {
@@ -17149,13 +17509,13 @@
         } else {
           // Skip empty defs
           if (elem.nodeName === 'defs' && !elem.firstChild) {
-            return;
+            return '';
           }
 
           var mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];
 
-          for (i = attrs.length - 1; i >= 0; i--) {
-            var _attr = attrs[i];
+          for (var _i4 = attrs.length - 1; _i4 >= 0; _i4--) {
+            var _attr = attrs[_i4];
 
             var _attrVal = toXml(_attr.value); // remove bogus attributes added by Gecko
 
@@ -17211,27 +17571,29 @@
           indent++;
           var bOneLine = false;
 
-          for (i = 0; i < childs.length; i++) {
-            var child = childs.item(i);
+          for (var _i5 = 0; _i5 < childs.length; _i5++) {
+            var child = childs.item(_i5);
 
             switch (child.nodeType) {
               case 1:
                 // element node
                 out.push('\n');
-                out.push(this.svgToString(childs.item(i), indent));
+                out.push(this.svgToString(childs.item(_i5), indent));
                 break;
 
               case 3:
-                // text node
-                var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
+                {
+                  // text node
+                  var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
 
-                if (str !== '') {
-                  bOneLine = true;
-                  out.push(String(toXml(str)));
+                  if (str !== '') {
+                    bOneLine = true;
+                    out.push(String(toXml(str)));
+                  }
+
+                  break;
                 }
 
-                break;
-
               case 4:
                 // cdata node
                 out.push('\n');
@@ -17258,7 +17620,7 @@
           if (!bOneLine) {
             out.push('\n');
 
-            for (i = 0; i < indent; i++) {
+            for (var _i6 = 0; _i6 < indent; _i6++) {
               out.push(' ');
             }
           }
@@ -17285,13 +17647,14 @@
     * Converts a given image file to a data URL when possible, then runs a given callback.
     * @function module:svgcanvas.SvgCanvas#embedImage
     * @param {string} src - The path/URL of the image
-    * @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found
     * @returns {Promise} Resolves to Data URL (string|false)
     */
 
 
-    this.embedImage = function (src, callback) {
+    this.embedImage = function (src) {
+      // Todo: Remove this Promise in favor of making an async/await `Image.load` utility
       return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
         // load in the image and once it's loaded, get the dimensions
         $$9(new Image()).load(function (response, status, xhr) {
           if (status === 'error') {
@@ -17315,11 +17678,6 @@
           }
 
           lastGoodImgUrl = src;
-
-          if (callback) {
-            callback(encodableImages[src]);
-          }
-
           resolve(encodableImages[src]);
         }).attr('src', src);
       });
@@ -17342,7 +17700,9 @@
     */
 
 
-    this.open = function () {};
+    this.open = function () {
+      /* */
+    };
     /**
     * Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.
     * This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save
@@ -17368,7 +17728,7 @@
       call('saved', str);
     };
     /**
-    * @typedef {GenericObject} module:svgcanvas.IssuesAndCodes
+    * @typedef {PlainObject} module:svgcanvas.IssuesAndCodes
     * @property {string[]} issueCodes The locale-independent code names
     * @property {string[]} issues The localized descriptions
     */
@@ -17427,13 +17787,6 @@
     * @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added
     */
 
-    /**
-     * Function to run when image data is found
-     * @callback module:svgcanvas.ImageExportedCallback
-     * @param {module:svgcanvas.ImageExportedResults} obj
-     * @returns {undefined}
-     */
-
     /**
     * Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,
     * then calls "exported" with an object including the string, image
@@ -17442,7 +17795,6 @@
     * @param {"PNG"|"JPEG"|"BMP"|"WEBP"|"ICO"} [imgType="PNG"]
     * @param {Float} [quality] Between 0 and 1
     * @param {string} [exportWindowName]
-    * @param {module:svgcanvas.ImageExportedCallback} [cb]
     * @param {PlainObject} [opts]
     * @param {boolean} [opts.avoidEvent]
     * @fires module:svgcanvas.SvgCanvas#event:exported
@@ -17450,29 +17802,72 @@
     * @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}
     */
 
-    this.rasterExport = function (imgType, quality, exportWindowName, cb) {
-      var opts = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
-      var type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
-      var mimeType = 'image/' + type.toLowerCase();
-
-      var _getIssues = getIssues(),
-          issues = _getIssues.issues,
-          issueCodes = _getIssues.issueCodes;
-
-      var svg = this.svgCanvasToString();
-      return new Promise(
+    this.rasterExport =
+    /*#__PURE__*/
+    function () {
+      var _ref4 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref4 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee2(resolve, reject) {
-          var _ref5, c, dataURLType, datauri, bloburl, done;
+      regeneratorRuntime.mark(function _callee2(imgType, quality, exportWindowName) {
+        var opts,
+            type,
+            mimeType,
+            _getIssues,
+            issues,
+            issueCodes,
+            svg,
+            _ref5,
+            c,
+            _args2 = arguments;
 
-          return regeneratorRuntime.wrap(function _callee2$(_context2) {
-            while (1) {
-              switch (_context2.prev = _context2.next) {
-                case 0:
-                  done = function _ref6() {
+        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+          while (1) {
+            switch (_context2.prev = _context2.next) {
+              case 0:
+                opts = _args2.length > 3 && _args2[3] !== undefined ? _args2[3] : {};
+                type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
+                mimeType = 'image/' + type.toLowerCase();
+                _getIssues = getIssues(), issues = _getIssues.issues, issueCodes = _getIssues.issueCodes;
+                svg = this.svgCanvasToString();
+
+                if (canvg) {
+                  _context2.next = 10;
+                  break;
+                }
+
+                _context2.next = 8;
+                return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
+                  global: 'canvg'
+                });
+
+              case 8:
+                _ref5 = _context2.sent;
+                canvg = _ref5.canvg;
+
+              case 10:
+                if (!$$9('#export_canvas').length) {
+                  $$9('<canvas>', {
+                    id: 'export_canvas'
+                  }).hide().appendTo('body');
+                }
+
+                c = $$9('#export_canvas')[0];
+                c.width = canvas.contentW;
+                c.height = canvas.contentH;
+                _context2.next = 16;
+                return canvg(c, svg);
+
+              case 16:
+                return _context2.abrupt("return", new Promise(function (resolve, reject) {
+                  // eslint-disable-line promise/avoid-new
+                  var dataURLType = type.toLowerCase();
+                  var datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
+                  var bloburl;
+                  /**
+                   * Called when `bloburl` is available for export.
+                   * @returns {undefined}
+                   */
+
+                  function done() {
                     var obj = {
                       datauri: datauri,
                       bloburl: bloburl,
@@ -17489,72 +17884,33 @@
                       call('exported', obj);
                     }
 
-                    if (cb) {
-                      cb(obj);
-                    }
-
                     resolve(obj);
-                  };
-
-                  if (canvg) {
-                    _context2.next = 6;
-                    break;
                   }
 
-                  _context2.next = 4;
-                  return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
-                    global: 'canvg'
-                  });
-
-                case 4:
-                  _ref5 = _context2.sent;
-                  canvg = _ref5.canvg;
-
-                case 6:
-                  if (!$$9('#export_canvas').length) {
-                    $$9('<canvas>', {
-                      id: 'export_canvas'
-                    }).hide().appendTo('body');
+                  if (c.toBlob) {
+                    c.toBlob(function (blob) {
+                      bloburl = createObjectURL(blob);
+                      done();
+                    }, mimeType, quality);
+                    return;
                   }
 
-                  c = $$9('#export_canvas')[0];
-                  c.width = canvas.contentW;
-                  c.height = canvas.contentH;
-                  _context2.next = 12;
-                  return canvg(c, svg);
-
-                case 12:
-                  dataURLType = type.toLowerCase();
-                  datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
-
-                  if (!c.toBlob) {
-                    _context2.next = 17;
-                    break;
-                  }
-
-                  c.toBlob(function (blob) {
-                    bloburl = createObjectURL(blob);
-                    done();
-                  }, mimeType, quality);
-                  return _context2.abrupt("return");
-
-                case 17:
                   bloburl = dataURLToObjectURL(datauri);
                   done();
+                }));
 
-                case 19:
-                case "end":
-                  return _context2.stop();
-              }
+              case 17:
+              case "end":
+                return _context2.stop();
             }
-          }, _callee2, this);
-        }));
+          }
+        }, _callee2, this);
+      }));
 
-        return function (_x4, _x5) {
-          return _ref4.apply(this, arguments);
-        };
-      }());
-    };
+      return function (_x4, _x5, _x6) {
+        return _ref4.apply(this, arguments);
+      };
+    }();
     /**
      * @external jsPDF
      */
@@ -17583,118 +17939,114 @@
     * @property {string} exportWindowName
     */
 
-    /**
-     * Function to run when PDF data is found
-     * @callback module:svgcanvas.PDFExportedCallback
-     * @param {module:svgcanvas.PDFExportedResults} obj
-     * @returns {undefined}
-     */
-
     /**
     * Generates a PDF based on the current image, then calls "exportedPDF" with
     * an object including the string, the data URL, and any issues found.
     * @function module:svgcanvas.SvgCanvas#exportPDF
     * @param {string} [exportWindowName] Will also be used for the download file name here
     * @param {external:jsPDF.OutputType} [outputType="dataurlstring"]
-    * @param {module:svgcanvas.PDFExportedCallback} [cb]
     * @fires module:svgcanvas.SvgCanvas#event:exportedPDF
     * @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}
     */
 
 
-    this.exportPDF = function (exportWindowName) {
-      var outputType = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : isChrome() ? 'save' : undefined;
-      var cb = arguments.length > 2 ? arguments[2] : undefined;
-      var that = this;
-      return new Promise(
+    this.exportPDF =
+    /*#__PURE__*/
+    function () {
+      var _ref6 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref7 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee3(resolve, reject) {
-          var modularVersion, res, orientation, unit, doc, docTitle, _getIssues2, issues, issueCodes, svg, obj;
+      regeneratorRuntime.mark(function _callee3(exportWindowName) {
+        var outputType,
+            modularVersion,
+            res,
+            orientation,
+            unit,
+            doc,
+            docTitle,
+            _getIssues2,
+            issues,
+            issueCodes,
+            svg,
+            obj,
+            _args3 = arguments;
 
-          return regeneratorRuntime.wrap(function _callee3$(_context3) {
-            while (1) {
-              switch (_context3.prev = _context3.next) {
-                case 0:
-                  if (window.jsPDF) {
-                    _context3.next = 6;
-                    break;
-                  }
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
+          while (1) {
+            switch (_context3.prev = _context3.next) {
+              case 0:
+                outputType = _args3.length > 1 && _args3[1] !== undefined ? _args3[1] : isChrome() ? 'save' : undefined;
 
-                  _context3.next = 3;
-                  return importScript([// We do not currently have these paths configurable as they are
-                  //   currently global-only, so not Rolled-up
-                  'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
+                if (window.jsPDF) {
+                  _context3.next = 7;
+                  break;
+                }
 
-                case 3:
-                  modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
+                _context3.next = 4;
+                return importScript([// We do not currently have these paths configurable as they are
+                //   currently global-only, so not Rolled-up
+                'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
 
-                  _context3.next = 6;
-                  return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
-                    type: modularVersion ? 'module' : 'text/javascript'
-                  });
+              case 4:
+                modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
 
-                case 6:
-                  res = getResolution();
-                  orientation = res.w > res.h ? 'landscape' : 'portrait';
-                  unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
-                  // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
+                _context3.next = 7;
+                return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
+                  type: modularVersion ? 'module' : 'text/javascript'
+                });
 
-                  doc = jsPDF({
-                    orientation: orientation,
-                    unit: unit,
-                    format: [res.w, res.h] // , compressPdf: true
+              case 7:
+                res = getResolution();
+                orientation = res.w > res.h ? 'landscape' : 'portrait';
+                unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
+                // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
 
-                  });
-                  docTitle = getDocumentTitle();
-                  doc.setProperties({
-                    title: docTitle
-                    /* ,
-                    subject: '',
-                    author: '',
-                    keywords: '',
-                    creator: '' */
+                doc = jsPDF({
+                  orientation: orientation,
+                  unit: unit,
+                  format: [res.w, res.h] // , compressPdf: true
 
-                  });
-                  _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
-                  svg = that.svgCanvasToString();
-                  doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
-                  //  window; todo: configure this and other export
-                  //  options to optionally work in this manner as
-                  //  opposed to opening a new tab
+                });
+                docTitle = getDocumentTitle();
+                doc.setProperties({
+                  title: docTitle
+                  /* ,
+                  subject: '',
+                  author: '',
+                  keywords: '',
+                  creator: '' */
 
-                  outputType = outputType || 'dataurlstring';
-                  obj = {
-                    svg: svg,
-                    issues: issues,
-                    issueCodes: issueCodes,
-                    exportWindowName: exportWindowName,
-                    outputType: outputType
-                  };
-                  obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+                });
+                _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
+                svg = this.svgCanvasToString();
+                doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
+                //  window; todo: configure this and other export
+                //  options to optionally work in this manner as
+                //  opposed to opening a new tab
 
-                  if (cb) {
-                    cb(obj);
-                  }
+                outputType = outputType || 'dataurlstring';
+                obj = {
+                  svg: svg,
+                  issues: issues,
+                  issueCodes: issueCodes,
+                  exportWindowName: exportWindowName,
+                  outputType: outputType
+                };
+                obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+                call('exportedPDF', obj);
+                return _context3.abrupt("return", obj);
 
-                  resolve(obj);
-                  call('exportedPDF', obj);
-
-                case 21:
-                case "end":
-                  return _context3.stop();
-              }
+              case 21:
+              case "end":
+                return _context3.stop();
             }
-          }, _callee3, this);
-        }));
+          }
+        }, _callee3, this);
+      }));
 
-        return function (_x6, _x7) {
-          return _ref7.apply(this, arguments);
-        };
-      }());
-    };
+      return function (_x7) {
+        return _ref6.apply(this, arguments);
+      };
+    }();
     /**
     * Returns the current drawing as raw SVG XML text.
     * @function module:svgcanvas.SvgCanvas#getSvgString
@@ -17888,18 +18240,18 @@
       }
 
       elems.each(function () {
-        var grad = this;
+        var grad = this; // eslint-disable-line consistent-this
 
         if ($$9(grad).attr('gradientUnits') === 'userSpaceOnUse') {
           // TODO: Support more than one element with this ref by duplicating parent grad
-          var _elems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
+          var fillStrokeElems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
 
-          if (!_elems.length) {
+          if (!fillStrokeElems.length) {
             return;
           } // get object's bounding box
 
 
-          var bb = getBBox(_elems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
+          var bb = getBBox(fillStrokeElems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
           // in which we shouldn't need to convert anyway.
 
           if (!bb) {
@@ -17991,8 +18343,8 @@
 
         if (vb) {
           var nums = vb.split(' ');
-          pos.x -= +nums[0];
-          pos.y -= +nums[1];
+          pos.x -= Number(nums[0]);
+          pos.y -= Number(nums[1]);
         } // Not ideal, but works
 
 
@@ -18058,7 +18410,7 @@
           try {
             recalculateDimensions(n);
           } catch (e) {
-            console.log(e);
+            console.log(e); // eslint-disable-line no-console
           }
         }); // Give ID for any visible element missing one
 
@@ -18076,7 +18428,7 @@
 
         addCommandToHistory(batchCmd);
       } else {
-        console.log('Unexpected element to ungroup:', elem);
+        console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console
       }
     };
     /**
@@ -18132,7 +18484,8 @@
 
 
         content.find('image').each(function () {
-          var image = this;
+          var image = this; // eslint-disable-line consistent-this
+
           preventClickDefault(image);
           var val = getHref(this);
 
@@ -18246,7 +18599,8 @@
         if (!preventUndo) addCommandToHistory(batchCmd);
         call('changed', [svgcontent]);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
+
         return false;
       }
 
@@ -18309,12 +18663,12 @@
           vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];
 
           for (j = 0; j < 4; ++j) {
-            vb[j] = +vb[j];
+            vb[j] = Number(vb[j]);
           } // TODO: properly handle preserveAspectRatio
 
 
           var // canvasw = +svgcontent.getAttribute('width'),
-          canvash = +svgcontent.getAttribute('height'); // imported content should be 1/3 of the canvas on its largest dimension
+          canvash = Number(svgcontent.getAttribute('height')); // imported content should be 1/3 of the canvas on its largest dimension
 
           if (innerh > innerw) {
             ts = 'scale(' + canvash / 3 / vb[3] + ')';
@@ -18373,7 +18727,8 @@
         addCommandToHistory(batchCmd);
         call('changed', [svgcontent]);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
+
         return null;
       } // we want to return the element so we can automatically select it
 
@@ -18383,8 +18738,27 @@
     //  canvas is a dependency for all of these
 
 
-    ['identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer', 'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition', 'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers', 'leaveContext', 'setContext'].forEach(function (prop) {
-      canvas[prop] = draw[prop];
+    var dr = {
+      identifyLayers: identifyLayers,
+      createLayer: createLayer,
+      cloneLayer: cloneLayer,
+      deleteCurrentLayer: deleteCurrentLayer,
+      setCurrentLayer: setCurrentLayer,
+      renameCurrentLayer: renameCurrentLayer,
+      setCurrentLayerPosition: setCurrentLayerPosition,
+      setLayerVisibility: setLayerVisibility,
+      moveSelectedToLayer: moveSelectedToLayer,
+      mergeLayer: mergeLayer,
+      mergeAllLayers: mergeAllLayers,
+      leaveContext: leaveContext,
+      setContext: setContext
+    };
+    Object.entries(dr).forEach(function (_ref7) {
+      var _ref8 = _slicedToArray(_ref7, 2),
+          prop = _ref8[0],
+          propVal = _ref8[1];
+
+      canvas[prop] = propVal;
     });
     init$3(
     /**
@@ -18515,6 +18889,7 @@
 
     this.setUiStrings = function (strs) {
       Object.assign(uiStrings, strs.notification);
+      $$9 = jQueryPluginDBox($$9, strs.common);
       setUiStrings(strs);
     };
     /**
@@ -18530,8 +18905,9 @@
     };
     /**
     * @function module:svgcanvas.SvgCanvas#getTitle
-    * @param {Element} elem
-    * @returns {string|undefined} the current group/SVG's title contents
+    * @param {Element} [elem]
+    * @returns {string|undefined} the current group/SVG's title contents or
+    * `undefined` if no element is passed nd there are no selected elements.
     */
 
 
@@ -18539,7 +18915,7 @@
       elem = elem || selectedElements[0];
 
       if (!elem) {
-        return;
+        return undefined;
       }
 
       elem = $$9(elem).data('gsvg') || $$9(elem).data('symbol') || elem;
@@ -18759,6 +19135,7 @@
       var bb;
 
       var calcZoom = function calcZoom(bb) {
+        // eslint-disable-line no-shadow
         if (!bb) {
           return false;
         }
@@ -18790,28 +19167,34 @@
 
       switch (val) {
         case 'selection':
-          if (!selectedElements[0]) {
-            return;
+          {
+            if (!selectedElements[0]) {
+              return undefined;
+            }
+
+            var selectedElems = $$9.map(selectedElements, function (n) {
+              if (n) {
+                return n;
+              }
+
+              return undefined;
+            });
+            bb = getStrokedBBoxDefaultVisible(selectedElems);
+            break;
           }
 
-          var selectedElems = $$9.map(selectedElements, function (n) {
-            if (n) {
-              return n;
-            }
-          });
-          bb = getStrokedBBoxDefaultVisible(selectedElems);
-          break;
-
         case 'canvas':
-          var res = getResolution();
-          spacer = 0.95;
-          bb = {
-            width: res.w,
-            height: res.h,
-            x: 0,
-            y: 0
-          };
-          break;
+          {
+            var res = getResolution();
+            spacer = 0.95;
+            bb = {
+              width: res.w,
+              height: res.h,
+              x: 0,
+              y: 0
+            };
+            break;
+          }
 
         case 'content':
           bb = getStrokedBBoxDefaultVisible();
@@ -18822,7 +19205,7 @@
           break;
 
         default:
-          return;
+          return undefined;
       }
 
       return calcZoom(bb);
@@ -18991,6 +19374,11 @@
         type: 'solidColor'
       };
       var elems = [];
+      /**
+       *
+       * @param {Element} e
+       * @returns {undefined}
+       */
 
       function addNonG(e) {
         if (e.nodeName !== 'g') {
@@ -19006,14 +19394,12 @@
         if (elem) {
           if (elem.tagName === 'g') {
             walkTree(elem, addNonG);
-          } else {
-            if (type === 'fill') {
-              if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
-                elems.push(elem);
-              }
-            } else {
+          } else if (type === 'fill') {
+            if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
               elems.push(elem);
             }
+          } else {
+            elems.push(elem);
           }
         }
       }
@@ -19083,7 +19469,7 @@
             var gradAttrs = $$9(grad).attr(radAttrs);
             var ogAttrs = $$9(og).attr(radAttrs);
             var diff = false;
-            $$9.each(radAttrs, function (i, attr) {
+            $$9.each(radAttrs, function (j, attr) {
               if (gradAttrs[attr] !== ogAttrs[attr]) {
                 diff = true;
               }
@@ -19199,6 +19585,11 @@
 
       curProperties.stroke_width = val;
       var elems = [];
+      /**
+       *
+       * @param {Element} e
+       * @returns {undefined}
+       */
 
       function addNonG(e) {
         if (e.nodeName !== 'g') {
@@ -19405,7 +19796,7 @@
           }
 
           if (isWebkit()) {
-            console.log('e', elem);
+            // console.log('e', elem); // eslint-disable-line no-console
             elem.removeAttribute('filter');
             elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');
           }
@@ -19414,6 +19805,11 @@
           canvas.setBlurOffsets(filter, val);
         }
       };
+      /**
+       *
+       * @returns {undefined}
+       */
+
 
       function finishChange() {
         var bCmd = canvas.undoMgr.finishUndoableChange();
@@ -19426,29 +19822,26 @@
       * Sets the `x`, `y`, `width`, `height` values of the filter element in order to
       * make the blur not be clipped. Removes them if not neeeded.
       * @function module:svgcanvas.SvgCanvas#setBlurOffsets
-      * @param {Element} filter - The filter DOM element to update
+      * @param {Element} filterElem - The filter DOM element to update
       * @param {Float} stdDev - The standard deviation value on which to base the offset size
       * @returns {undefined}
       */
 
 
-      canvas.setBlurOffsets = function (filter, stdDev) {
+      canvas.setBlurOffsets = function (filterElem, stdDev) {
         if (stdDev > 3) {
           // TODO: Create algorithm here where size is based on expected blur
-          assignAttributes(filter, {
+          assignAttributes(filterElem, {
             x: '-50%',
             y: '-50%',
             width: '200%',
             height: '200%'
-          }, 100);
-        } else {
-          // Removing these attributes hides text in Chrome (see Issue 579)
-          if (!isWebkit()) {
-            filter.removeAttribute('x');
-            filter.removeAttribute('y');
-            filter.removeAttribute('width');
-            filter.removeAttribute('height');
-          }
+          }, 100); // Removing these attributes hides text in Chrome (see Issue 579)
+        } else if (!isWebkit()) {
+          filterElem.removeAttribute('x');
+          filterElem.removeAttribute('y');
+          filterElem.removeAttribute('width');
+          filterElem.removeAttribute('height');
         }
       };
       /**
@@ -19530,7 +19923,7 @@
       // should only have one element selected
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         return selected.getAttribute('font-weight') === 'bold';
       }
 
@@ -19547,7 +19940,7 @@
     this.setBold = function (b) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');
       }
 
@@ -19565,7 +19958,7 @@
     this.getItalic = function () {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         return selected.getAttribute('font-style') === 'italic';
       }
 
@@ -19582,7 +19975,7 @@
     this.setItalic = function (i) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         changeSelectedAttribute('font-style', i ? 'italic' : 'normal');
       }
 
@@ -19670,7 +20063,7 @@
     this.getText = function () {
       var selected = selectedElements[0];
 
-      if (selected == null) {
+      if (isNullish(selected)) {
         return '';
       }
 
@@ -19783,7 +20176,7 @@
     this.setRectRadius = function (val) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'rect') {
+      if (!isNullish(selected) && selected.tagName === 'rect') {
         var r = selected.getAttribute('rx');
 
         if (r !== String(val)) {
@@ -19845,14 +20238,14 @@
 
 
     this.convertToPath = function (elem, getBBox$$1) {
-      if (elem == null) {
+      if (isNullish(elem)) {
         var elems = selectedElements;
-        $$9.each(elems, function (i, elem) {
-          if (elem) {
-            canvas.convertToPath(elem);
+        $$9.each(elems, function (i, el) {
+          if (el) {
+            canvas.convertToPath(el);
           }
         });
-        return;
+        return undefined;
       }
 
       if (getBBox$$1) {
@@ -19873,7 +20266,7 @@
         opacity: curShape.opacity,
         visibility: 'hidden'
       };
-      return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory);
+      return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory);
     };
     /**
     * This function makes the changes to the elements. It does not add the change
@@ -19893,13 +20286,12 @@
 
       elems = elems || selectedElements;
       var i = elems.length;
-      var noXYElems = ['g', 'polyline', 'path'];
-      var goodGAttrs = ['transform', 'opacity', 'filter'];
+      var noXYElems = ['g', 'polyline', 'path']; // const goodGAttrs = ['transform', 'opacity', 'filter'];
 
       var _loop = function _loop() {
         var elem = elems[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           return "continue";
         } // Set x,y vals on elements that don't have them
 
@@ -19911,14 +20303,13 @@
           canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);
           return "continue";
         } // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky
-        // TODO: FIXME: This doesn't seem right. Where's the body of this if statement?
+        // TODO: FIXME: Missing statement body
+        // if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}
 
 
-        if (elem.tagName === 'g' && goodGAttrs.includes(attr)) ;
-
         var oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);
 
-        if (oldval == null) {
+        if (isNullish(oldval)) {
           oldval = '';
         }
 
@@ -20062,7 +20453,7 @@
       for (var i = 0; i < len; ++i) {
         var selected = selectedElements[i];
 
-        if (selected == null) {
+        if (isNullish(selected)) {
           break;
         }
 
@@ -20152,6 +20543,12 @@
 
       var changedIDs = {}; // Recursively replace IDs and record the changes
 
+      /**
+       *
+       * @param {module:svgcanvas.SVGAsJSON} elem
+       * @returns {undefined}
+       */
+
       function checkIDs(elem) {
         if (elem.attr && elem.attr.id) {
           changedIDs[elem.attr.id] = getNextId();
@@ -20280,7 +20677,7 @@
       while (i--) {
         var elem = selectedElements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           continue;
         }
 
@@ -20307,7 +20704,7 @@
     * @function module:svgcanvas.SvgCanvas#pushGroupProperties
     * @param {SVGAElement|SVGGElement} g
     * @param {boolean} undoable
-    * @returns {undefined}
+    * @returns {BatchCommand|undefined}
     */
 
 
@@ -20491,6 +20888,8 @@
       if (undoable && !batchCmd.isEmpty()) {
         return batchCmd;
       }
+
+      return undefined;
     };
     /**
     * Unwraps all the elements in a selected group (`g`) element. This requires
@@ -20587,7 +20986,7 @@
           _selectedElements2 = _slicedToArray(_selectedElements, 1),
           selected = _selectedElements2[0];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         var t = selected;
         var oldParent = t.parentNode;
         var oldNextSibling = t.nextSibling;
@@ -20614,7 +21013,7 @@
           _selectedElements4 = _slicedToArray(_selectedElements3, 1),
           selected = _selectedElements4[0];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         var t = selected;
         var oldParent = t.parentNode;
         var oldNextSibling = t.nextSibling;
@@ -20671,10 +21070,11 @@
             foundCur = true;
           }
 
-          return;
+          return true;
         }
 
-        closest = this;
+        closest = this; // eslint-disable-line consistent-this
+
         return false;
       });
 
@@ -20700,7 +21100,7 @@
     * @param {Float} dy - Float with the distance to move on the y-axis
     * @param {boolean} undoable - Boolean indicating whether or not the action should be undoable
     * @fires module:svgcanvas.SvgCanvas#event:changed
-    * @returns {BatchCommand} Batch command for the move
+    * @returns {BatchCommand|undefined} Batch command for the move
     */
 
 
@@ -20719,7 +21119,7 @@
       while (i--) {
         var selected = selectedElements[i];
 
-        if (selected != null) {
+        if (!isNullish(selected)) {
           // if (i === 0) {
           //   selectedBBoxes[0] = utilsGetBBox(selected);
           // }
@@ -20767,6 +21167,8 @@
         call('changed', selectedElements);
         return batchCmd;
       }
+
+      return undefined;
     };
     /**
     * Create deep DOM copies (clones) of all selected elements and move them slightly
@@ -20783,9 +21185,15 @@
       var batchCmd = new BatchCommand$1('Clone Elements'); // find all the elements selected (stop at first null)
 
       var len = selectedElements.length;
+      /**
+       * Sorts an array numerically and ascending.
+       * @param {Element} a
+       * @param {Element} b
+       * @returns {Integer}
+       */
 
       function sortfunction(a, b) {
-        return $$9(b).index() - $$9(a).index(); // causes an array to be sorted numerically and ascending
+        return $$9(b).index() - $$9(a).index();
       }
 
       selectedElements.sort(sortfunction);
@@ -20793,7 +21201,7 @@
       for (i = 0; i < len; ++i) {
         elem = selectedElements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           break;
         }
       } // use slice to quickly get the subset of elements we need
@@ -20846,7 +21254,7 @@
           curheight = Number.MIN_VALUE;
 
       for (var i = 0; i < len; ++i) {
-        if (selectedElements[i] == null) {
+        if (isNullish(selectedElements[i])) {
           break;
         }
 
@@ -20911,45 +21319,45 @@
       var dx = new Array(len);
       var dy = new Array(len);
 
-      for (var _i2 = 0; _i2 < len; ++_i2) {
-        if (selectedElements[_i2] == null) {
+      for (var _i7 = 0; _i7 < len; ++_i7) {
+        if (isNullish(selectedElements[_i7])) {
           break;
         } // const elem = selectedElements[i];
 
 
-        var bbox = bboxes[_i2];
-        dx[_i2] = 0;
-        dy[_i2] = 0;
+        var bbox = bboxes[_i7];
+        dx[_i7] = 0;
+        dy[_i7] = 0;
 
         switch (type) {
           case 'l':
             // left (horizontal)
-            dx[_i2] = minx - bbox.x;
+            dx[_i7] = minx - bbox.x;
             break;
 
           case 'c':
             // center (horizontal)
-            dx[_i2] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
+            dx[_i7] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
             break;
 
           case 'r':
             // right (horizontal)
-            dx[_i2] = maxx - (bbox.x + bbox.width);
+            dx[_i7] = maxx - (bbox.x + bbox.width);
             break;
 
           case 't':
             // top (vertical)
-            dy[_i2] = miny - bbox.y;
+            dy[_i7] = miny - bbox.y;
             break;
 
           case 'm':
             // middle (vertical)
-            dy[_i2] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
+            dy[_i7] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
             break;
 
           case 'b':
             // bottom (vertical)
-            dy[_i2] = maxy - (bbox.y + bbox.height);
+            dy[_i7] = maxy - (bbox.y + bbox.height);
             break;
         }
       }
@@ -21108,7 +21516,7 @@
         return;
       }
 
-      if (curElem == null) {
+      if (isNullish(curElem)) {
         num = next ? allElems.length - 1 : 0;
         elem = allElems[num];
       } else {
@@ -21230,7 +21638,7 @@
    * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
   */
   // We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`
-  function jqPluginJSHotkeys (b) {
+  function jQueryPluginJSHotkeys (b) {
     b.hotkeys = {
       version: "0.8",
       specialKeys: {
@@ -21382,7 +21790,7 @@
    * http://benalman.com/about/license/
    */
   // For sake of modules, added this wrapping export and changed `this` to `window`
-  function jqPluginBBQ (jQuery) {
+  function jQueryPluginBBQ (jQuery) {
     (function ($, p) {
       var i,
           m = Array.prototype.slice,
@@ -21732,6 +22140,7 @@
     return jQuery;
   }
 
+  // Todo: Move to own module (and have it import a modular base64 encoder)
   /**
    * SVG Icon Loader 2.0
    *
@@ -21830,17 +22239,23 @@
    * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object
    * @returns {external:jQuery} The enhanced jQuery object
   */
-  function jqPluginSVGIcons ($) {
+
+  function jQueryPluginSVGIcons($) {
     var svgIcons = {};
     var fixIDs;
+    /**
+     * List of raster images with each
+     * key being the SVG icon ID to replace, and the value the image file name
+     * @typedef {PlainObject.<string, string>} external:jQuery.svgIcons.Fallback
+    */
+
     /**
     * @function external:jQuery.svgIcons
     * @param {string} file The location of a local SVG or SVGz file
     * @param {PlainObject} [opts]
     * @param {Float} [opts.w] The icon widths
     * @param {Float} [opts.h] The icon heights
-    * @param {PlainObject.<string, string>} [opts.fallback] List of raster images with each
-      key being the SVG icon ID to replace, and the value the image file name
+    * @param {external:jQuery.svgIcons.Fallback} [opts.fallback]
     * @param {string} [opts.fallback_path] The path to use for all images
       listed under "fallback"
     * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,
@@ -21872,7 +22287,7 @@
           iconsMade = false,
           dataLoaded = false,
           loadAttempts = 0;
-      var isOpera = !!window.opera,
+      var isOpera = Boolean(window.opera),
           // ua = navigator.userAgent,
       // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),
       dataPre = 'data:image/svg+xml;charset=utf-8;base64,';
@@ -21910,24 +22325,29 @@
               $(function () {
                 useFallback();
               });
-            } else {
-              if (err.responseText) {
-                svgdoc = parser.parseFromString(err.responseText, 'text/xml');
+            } else if (err.responseText) {
+              svgdoc = parser.parseFromString(err.responseText, 'text/xml');
 
-                if (!svgdoc.childNodes.length) {
-                  $(useFallback);
-                }
-
-                $(function () {
-                  getIcons('ajax');
-                });
-              } else {
+              if (!svgdoc.childNodes.length) {
                 $(useFallback);
               }
+
+              $(function () {
+                getIcons('ajax');
+              });
+            } else {
+              $(useFallback);
             }
           }
         });
       }
+      /**
+       *
+       * @param {"ajax"|0|undefined} evt
+       * @param {boolean} [noWait]
+       * @returns {undefined}
+       */
+
 
       function getIcons(evt, noWait) {
         if (evt !== 'ajax') {
@@ -21975,6 +22395,15 @@
           }, 500);
         }
       }
+      /**
+       *
+       * @param {external:jQuery} target
+       * @param {external:jQuery} icon A wrapped `defs` or Image
+       * @param {string} id SVG icon ID
+       * @param {string} setID
+       * @returns {undefined}
+       */
+
 
       function setIcon(target, icon, id, setID) {
         if (isOpera) icon.css('visibility', 'hidden');
@@ -21996,6 +22425,11 @@
       }
 
       var holder;
+      /**
+       * @param {external:jQuery} icon A wrapped `defs` or Image
+       * @param {string} id SVG icon ID
+       * @returns {undefined}
+       */
 
       function addIcon(icon, id) {
         if (opts.id_match === undefined || opts.id_match !== false) {
@@ -22004,8 +22438,17 @@
 
         svgIcons[id] = icon;
       }
+      /**
+       *
+       * @param {boolean} [toImage]
+       * @param {external:jQuery.svgIcons.Fallback} [fallback]
+       * @returns {undefined}
+       */
 
-      function makeIcons(toImage, fallback) {
+
+      function makeIcons() {
+        var toImage = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
+        var fallback = arguments.length > 1 ? arguments[1] : undefined;
         if (iconsMade) return;
         if (opts.no_img) toImage = false;
         var tempHolder;
@@ -22108,7 +22551,7 @@
 
         if (isOpera) {
           idElems = defs.find('*').filter(function () {
-            return !!this.id;
+            return Boolean(this.id);
           });
         } else {
           idElems = defs.find('[id]');
@@ -22158,13 +22601,17 @@
         });
         return svgEl;
       };
+      /**
+       * @returns {undefined}
+       */
+
 
       function useFallback() {
         if (file.includes('.svgz')) {
           var regFile = file.replace('.svgz', '.svg');
 
           if (window.console) {
-            console.log('.svgz failed, trying with .svg');
+            console.log('.svgz failed, trying with .svg'); // eslint-disable-line no-console
           }
 
           $.svgIcons(regFile, opts);
@@ -22172,38 +22619,6 @@
           makeIcons(false, opts.fallback);
         }
       }
-
-      function encode64(input) {
-        // base64 strings are 4/3 larger than the original string
-        if (window.btoa) return window.btoa(input);
-        var _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-        var output = new Array(Math.floor((input.length + 2) / 3) * 4);
-        var i = 0,
-            p = 0;
-
-        do {
-          var chr1 = input.charCodeAt(i++);
-          var chr2 = input.charCodeAt(i++);
-          var chr3 = input.charCodeAt(i++);
-          var enc1 = chr1 >> 2;
-          var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
-          var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
-          var enc4 = chr3 & 63;
-
-          if (isNaN(chr2)) {
-            enc3 = enc4 = 64;
-          } else if (isNaN(chr3)) {
-            enc4 = 64;
-          }
-
-          output[p++] = _keyStr.charAt(enc1);
-          output[p++] = _keyStr.charAt(enc2);
-          output[p++] = _keyStr.charAt(enc3);
-          output[p++] = _keyStr.charAt(enc4);
-        } while (i < input.length);
-
-        return output.join('');
-      }
     };
     /**
     * @function external:jQuery.getSvgIcon
@@ -22306,8 +22721,12 @@
 
   if (!window.console) {
     window.console = {
-      log: function log(str) {},
-      dir: function dir(str) {}
+      log: function log(str) {
+        /* */
+      },
+      dir: function dir(str) {
+        /* */
+      }
     };
   }
   /**
@@ -22320,7 +22739,7 @@
   */
 
 
-  function jqPluginJGraduate ($) {
+  function jQueryPluginJGraduate($) {
     if (!$.loadingStylesheets) {
       $.loadingStylesheets = [];
     }
@@ -22486,25 +22905,48 @@
 
     };
     var isGecko = navigator.userAgent.includes('Gecko/');
+    /**
+    * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs
+    */
+
+    /**
+    * @param {SVGElement} elem
+    * @param {module:jGraduate.Attrs} attrs
+    * @returns {undefined}
+    */
 
     function setAttrs(elem, attrs) {
       if (isGecko) {
-        for (var aname in attrs) {
-          elem.setAttribute(aname, attrs[aname]);
-        }
+        Object.entries(attrs).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              aname = _ref2[0],
+              val = _ref2[1];
+
+          elem.setAttribute(aname, val);
+        });
       } else {
-        for (var _aname in attrs) {
-          var val = attrs[_aname],
-              prop = elem[_aname];
+        Object.entries(attrs).forEach(function (_ref3) {
+          var _ref4 = _slicedToArray(_ref3, 2),
+              aname = _ref4[0],
+              val = _ref4[1];
+
+          var prop = elem[aname];
 
           if (prop && prop.constructor === 'SVGLength') {
             prop.baseVal.value = val;
           } else {
-            elem.setAttribute(_aname, val);
+            elem.setAttribute(aname, val);
           }
-        }
+        });
       }
     }
+    /**
+    * @param {string} name
+    * @param {module:jGraduate.Attrs} attrs
+    * @param {Element} newparent
+    * @returns {SVGElement}
+    */
+
 
     function mkElem(name, attrs, newparent) {
       var elem = document.createElementNS(ns.svg, name);
@@ -22560,7 +23002,8 @@
             idref = '#' + $this.attr('id') + ' ';
 
         if (!idref) {
-          alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
+          /* await */
+          $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
           return;
         }
 
@@ -22686,19 +23129,21 @@
                 break;
 
               case 'inverse':
-                // Invert current color for second stop
-                var inverted = '';
+                {
+                  // Invert current color for second stop
+                  var inverted = '';
 
-                for (var i = 0; i < 6; i += 2) {
-                  // const ch = color.substr(i, 2);
-                  var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
-                  if (inv.length < 2) inv = 0 + inv;
-                  inverted += inv;
+                  for (var i = 0; i < 6; i += 2) {
+                    // const ch = color.substr(i, 2);
+                    var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
+                    if (inv.length < 2) inv = 0 + inv;
+                    inverted += inv;
+                  }
+
+                  mkStop(1, '#' + inverted, 1);
+                  break;
                 }
 
-                mkStop(1, '#' + inverted, 1);
-                break;
-
               case 'white':
                 mkStop(1, '#ffffff', 1);
                 break;
@@ -22800,16 +23245,25 @@
             $elem.css(cssName, this.value * MAX);
           }).change();
         });
+        /**
+         *
+         * @param {Float} n
+         * @param {Float|string} colr
+         * @param {Float} opac
+         * @param {boolean} [sel]
+         * @param {SVGStopElement} [stopElem]
+         * @returns {SVGStopElement}
+         */
 
-        function mkStop(n, color, opac, sel, stopElem) {
+        function mkStop(n, colr, opac, sel, stopElem) {
           var stop = stopElem || mkElem('stop', {
-            'stop-color': color,
+            'stop-color': colr,
             'stop-opacity': opac,
             offset: n
           }, curGradient);
 
           if (stopElem) {
-            color = stopElem.getAttribute('stop-color');
+            colr = stopElem.getAttribute('stop-color');
             opac = stopElem.getAttribute('stop-opacity');
             n = stopElem.getAttribute('offset');
           } else {
@@ -22825,7 +23279,7 @@
           }, stopGroup);
           var path = mkElem('path', {
             d: pickerD,
-            fill: color,
+            fill: colr,
             'fill-opacity': opac,
             transform: 'translate(' + (10 + n * MAX) + ', 26)',
             stroke: '#000',
@@ -22840,8 +23294,9 @@
             return false;
           }).data('stop', stop).data('bg', pathbg).dblclick(function () {
             $('div.jGraduate_LightBox').show();
-            var colorhandle = this;
-            var stopOpacity = +stop.getAttribute('stop-opacity') || 1;
+            var colorhandle = this; // eslint-disable-line consistent-this
+
+            var stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;
             var stopColor = stop.getAttribute('stop-color') || 1;
             var thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);
 
@@ -22849,7 +23304,7 @@
               thisAlpha = '0' + thisAlpha;
             }
 
-            color = stopColor.substr(1) + thisAlpha;
+            colr = stopColor.substr(1) + thisAlpha;
             $('#' + id + '_jGraduate_stopPicker').css({
               left: 100,
               bottom: 15
@@ -22861,12 +23316,12 @@
                 clientPath: $settings.images.clientPath
               },
               color: {
-                active: color,
+                active: colr,
                 alphaSupport: true
               }
-            }, function (color, arg2) {
-              stopColor = color.val('hex') ? '#' + color.val('hex') : 'none';
-              stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;
+            }, function (clr, arg2) {
+              stopColor = clr.val('hex') ? '#' + clr.val('hex') : 'none';
+              stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;
               colorhandle.setAttribute('fill', stopColor);
               colorhandle.setAttribute('fill-opacity', stopOpacity);
               stop.setAttribute('stop-color', stopColor);
@@ -22881,8 +23336,8 @@
           $(curGradient).find('stop').each(function () {
             var curS = $(this);
 
-            if (+this.getAttribute('offset') > n) {
-              if (!color) {
+            if (Number(this.getAttribute('offset')) > n) {
+              if (!colr) {
                 var newcolor = this.getAttribute('stop-color');
                 var newopac = this.getAttribute('stop-opacity');
                 stop.setAttribute('stop-color', newcolor);
@@ -22894,10 +23349,17 @@
               curS.before(stop);
               return false;
             }
+
+            return true;
           });
           if (sel) selectStop(path);
           return stop;
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function remStop() {
           delStop.setAttribute('display', 'none');
@@ -22917,6 +23379,11 @@
           display: 'none'
         }, undefined); // stopMakerSVG);
 
+        /**
+        * @param {Element} item
+        * @returns {undefined}
+        */
+
         function selectStop(item) {
           if (curStop) curStop.setAttribute('stroke', '#000');
           item.setAttribute('stroke', 'blue');
@@ -22927,6 +23394,10 @@
         }
 
         var stopOffset;
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function remDrags() {
           $win.unbind('mousemove', dragColor);
@@ -22943,6 +23414,10 @@
             angle = 0;
         var cX = cx;
         var cY = cy;
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function xform() {
           var rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';
@@ -22955,6 +23430,11 @@
             curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')'); // $('#ang').removeClass('dis');
           }
         }
+        /**
+        * @param {Event} evt
+        * @returns {undefined}
+        */
+
 
         function dragColor(evt) {
           var x = evt.pageX - stopOffset.left;
@@ -23042,28 +23522,28 @@
           var fracx = x / SIZEX;
           var fracy = y / SIZEY;
           var type = draggingCoord.data('coord');
-          var grad = curGradient;
+          var grd = curGradient;
 
           switch (type) {
             case 'start':
               attrInput.x1.val(fracx);
               attrInput.y1.val(fracy);
-              grad.setAttribute('x1', fracx);
-              grad.setAttribute('y1', fracy);
+              grd.setAttribute('x1', fracx);
+              grd.setAttribute('y1', fracy);
               break;
 
             case 'end':
               attrInput.x2.val(fracx);
               attrInput.y2.val(fracy);
-              grad.setAttribute('x2', fracx);
-              grad.setAttribute('y2', fracy);
+              grd.setAttribute('x2', fracx);
+              grd.setAttribute('y2', fracy);
               break;
 
             case 'center':
               attrInput.cx.val(fracx);
               attrInput.cy.val(fracy);
-              grad.setAttribute('cx', fracx);
-              grad.setAttribute('cy', fracy);
+              grd.setAttribute('cx', fracx);
+              grd.setAttribute('cy', fracy);
               cX = fracx;
               cY = fracy;
               xform();
@@ -23072,8 +23552,8 @@
             case 'focus':
               attrInput.fx.val(fracx);
               attrInput.fy.val(fracy);
-              grad.setAttribute('fx', fracx);
-              grad.setAttribute('fy', fracy);
+              grd.setAttribute('fx', fracx);
+              grd.setAttribute('fy', fracy);
               xform();
           }
 
@@ -23143,22 +23623,20 @@
           focusCoord.toggle(showFocus);
           attrInput.fx.val('');
           attrInput.fy.val('');
-          var grad = curGradient;
+          var grd = curGradient;
 
           if (!showFocus) {
-            lastfx = grad.getAttribute('fx');
-            lastfy = grad.getAttribute('fy');
-            grad.removeAttribute('fx');
-            grad.removeAttribute('fy');
+            lastfx = grd.getAttribute('fx');
+            lastfy = grd.getAttribute('fy');
+            grd.removeAttribute('fx');
+            grd.removeAttribute('fy');
           } else {
-            var _fx = lastfx || 0.5;
-
-            var _fy = lastfy || 0.5;
-
-            grad.setAttribute('fx', _fx);
-            grad.setAttribute('fy', _fy);
-            attrInput.fx.val(_fx);
-            attrInput.fy.val(_fy);
+            var fX = lastfx || 0.5;
+            var fY = lastfy || 0.5;
+            grd.setAttribute('fx', fX);
+            grd.setAttribute('fy', fY);
+            attrInput.fx.val(fX);
+            attrInput.fy.val(fY);
           }
         });
         stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');
@@ -23177,9 +23655,9 @@
 
         var setSlider = function setSlider(e) {
           var _slider = slider,
-              offset = _slider.offset;
+              left = _slider.offset.left;
           var div = slider.parent;
-          var x = e.pageX - offset.left - parseInt(div.css('border-left-width'));
+          var x = e.pageX - left - parseInt(div.css('border-left-width'));
           if (x > SLIDERW) x = SLIDERW;
           if (x <= 0) x = 0;
           var posx = x - 5;
@@ -23223,7 +23701,7 @@
               break;
 
             case 'angle':
-              x = x - 0.5;
+              x -= 0.5;
               angle = x *= 180;
               xform();
               x /= 100;
@@ -23315,7 +23793,7 @@
           });
           $(data.input).val(data.val).change(function () {
             var isRad = curType === 'radialGradient';
-            var val = +this.value;
+            var val = Number(this.value);
             var xpos = 0;
 
             switch (type) {
@@ -23413,10 +23891,10 @@
             active: color,
             alphaSupport: true
           }
-        }, function (color) {
+        }, function (clr) {
           $this.paint.type = 'solidColor';
-          $this.paint.alpha = color.val('ahex') ? Math.round(color.val('a') / 255 * 100) : 100;
-          $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';
+          $this.paint.alpha = clr.val('ahex') ? Math.round(clr.val('a') / 255 * 100) : 100;
+          $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';
           $this.paint.radialGradient = null;
           okClicked();
         }, null, function () {
@@ -23450,7 +23928,7 @@
               curGradient.setAttribute('spreadMethod', sm);
             }
 
-            showFocus = type === 'rg' && curGradient.getAttribute('fx') != null && !(cx === fx && cy === fy);
+            showFocus = type === 'rg' && curGradient.getAttribute('fx') !== null && !(cx === fx && cy === fy);
             $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);
 
             if (showFocus) {
@@ -23566,7 +24044,7 @@
    * @param {external:jQuery} $ The jQuery object to which to add the plug-in
    * @returns {external:jQuery}
   */
-  function jqPluginSpinBtn ($) {
+  function jQueryPluginSpinButton($) {
     if (!$.loadingStylesheets) {
       $.loadingStylesheets = [];
     }
@@ -23579,12 +24057,14 @@
     /**
     * @callback module:jQuerySpinButton.StepCallback
     * @param {external:jQuery} thisArg Value of `this`
+    * @param {Float} i Value to adjust
+    * @returns {Float}
     */
 
     /**
     * @callback module:jQuerySpinButton.ValueCallback
-    * @param {external:jQuery} thisArg Value of `this`
-    * @param {Float} value Value that was changed
+    * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.
+    * @returns {undefined}
     */
 
     /**
@@ -23592,7 +24072,7 @@
      * @property {Float} min Set lower limit
      * @property {Float} max Set upper limit.
      * @property {Float} step Set increment size.
-     * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust
+     * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.
      * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)
      * @property {Float} smallStep Set shift-click increment size.
      * @property {PlainObject} stateObj Object to allow passing in live-updating scale
@@ -23615,6 +24095,12 @@
 
     $.fn.SpinButton = function (cfg) {
       cfg = cfg || {};
+      /**
+       *
+       * @param {Element} el
+       * @param {"offsetLeft"|"offsetTop"} prop
+       * @returns {Integer}
+       */
 
       function coord(el, prop) {
         var b = document.body;
@@ -23873,7 +24359,7 @@
    *
   */
   /**
-  * @callback module:jQueryContextMenu.jQueryContextMenuCallback
+  * @callback module:jQueryContextMenu.jQueryContextMenuListener
   * @param {string} href The `href` value after the first character (for bypassing an initial `#`)
   * @param {external:jQuery} srcElement The wrapped jQuery srcElement
   * @param {{x: Float, y: Float, docX: Float, docY: Float}} coords
@@ -23906,10 +24392,10 @@
       /**
       * @memberof external:jQuery.fn
       * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o
-      * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback
+      * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener
       * @returns {external:jQuery}
       */
-      contextMenu: function contextMenu(o, callback) {
+      contextMenu: function contextMenu(o, listener) {
         // Defaults
         if (o.menu === undefined) return false;
         if (o.inSpeed === undefined) o.inSpeed = 150;
@@ -23925,102 +24411,104 @@
 
           menu.addClass('contextMenu'); // Simulate a true right click
 
-          $(this).bind('mousedown', function (e) {
-            var evt = e;
+          $(this).bind('mousedown', function (evt) {
             $(this).mouseup(function (e) {
               var srcElement = $(this);
               srcElement.unbind('mouseup');
 
-              if (evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac()) {
-                e.stopPropagation(); // Hide context menus that may be showing
-
-                $('.contextMenu').hide(); // Get this context menu
-
-                if (el.hasClass('disabled')) return false; // Detect mouse position
-
-                var x = e.pageX,
-                    y = e.pageY;
-                var xOff = win.width() - menu.width(),
-                    yOff = win.height() - menu.height();
-                if (x > xOff - 15) x = xOff - 15;
-                if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
-                // Show the menu
-
-                doc.unbind('click');
-                menu.css({
-                  top: y,
-                  left: x
-                }).fadeIn(o.inSpeed); // Hover events
-
-                menu.find('A').mouseover(function () {
-                  menu.find('LI.hover').removeClass('hover');
-                  $(this).parent().addClass('hover');
-                }).mouseout(function () {
-                  menu.find('LI.hover').removeClass('hover');
-                }); // Keyboard
-
-                doc.keypress(function (e) {
-                  switch (e.keyCode) {
-                    case 38:
-                      // up
-                      if (!menu.find('LI.hover').length) {
-                        menu.find('LI:last').addClass('hover');
-                      } else {
-                        menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
-                        if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
-                      }
-
-                      break;
-
-                    case 40:
-                      // down
-                      if (!menu.find('LI.hover').length) {
-                        menu.find('LI:first').addClass('hover');
-                      } else {
-                        menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
-                        if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
-                      }
-
-                      break;
-
-                    case 13:
-                      // enter
-                      menu.find('LI.hover A').trigger('click');
-                      break;
-
-                    case 27:
-                      // esc
-                      doc.trigger('click');
-                      break;
-                  }
-                }); // When items are selected
-
-                menu.find('A').unbind('mouseup');
-                menu.find('LI:not(.disabled) A').mouseup(function () {
-                  doc.unbind('click').unbind('keypress');
-                  $('.contextMenu').hide(); // Callback
-
-                  if (callback) {
-                    callback($(this).attr('href').substr(1), $(srcElement), {
-                      x: x - offset.left,
-                      y: y - offset.top,
-                      docX: x,
-                      docY: y
-                    });
-                  }
-
-                  return false;
-                }); // Hide bindings
-
-                setTimeout(function () {
-                  // Delay for Mozilla
-                  doc.click(function () {
-                    doc.unbind('click').unbind('keypress');
-                    menu.fadeOut(o.outSpeed);
-                    return false;
-                  });
-                }, 0);
+              if (!(evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac())) {
+                return undefined;
               }
+
+              e.stopPropagation(); // Hide context menus that may be showing
+
+              $('.contextMenu').hide(); // Get this context menu
+
+              if (el.hasClass('disabled')) return false; // Detect mouse position
+
+              var x = e.pageX,
+                  y = e.pageY;
+              var xOff = win.width() - menu.width(),
+                  yOff = win.height() - menu.height();
+              if (x > xOff - 15) x = xOff - 15;
+              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
+              // Show the menu
+
+              doc.unbind('click');
+              menu.css({
+                top: y,
+                left: x
+              }).fadeIn(o.inSpeed); // Hover events
+
+              menu.find('A').mouseover(function () {
+                menu.find('LI.hover').removeClass('hover');
+                $(this).parent().addClass('hover');
+              }).mouseout(function () {
+                menu.find('LI.hover').removeClass('hover');
+              }); // Keyboard
+
+              doc.keypress(function (ev) {
+                switch (ev.keyCode) {
+                  case 38:
+                    // up
+                    if (!menu.find('LI.hover').length) {
+                      menu.find('LI:last').addClass('hover');
+                    } else {
+                      menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
+                      if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
+                    }
+
+                    break;
+
+                  case 40:
+                    // down
+                    if (!menu.find('LI.hover').length) {
+                      menu.find('LI:first').addClass('hover');
+                    } else {
+                      menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
+                      if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
+                    }
+
+                    break;
+
+                  case 13:
+                    // enter
+                    menu.find('LI.hover A').trigger('click');
+                    break;
+
+                  case 27:
+                    // esc
+                    doc.trigger('click');
+                    break;
+                }
+              }); // When items are selected
+
+              menu.find('A').unbind('mouseup');
+              menu.find('LI:not(.disabled) A').mouseup(function () {
+                doc.unbind('click').unbind('keypress');
+                $('.contextMenu').hide();
+
+                if (listener) {
+                  listener($(this).attr('href').substr(1), $(srcElement), {
+                    x: x - offset.left,
+                    y: y - offset.top,
+                    docX: x,
+                    docY: y
+                  });
+                }
+
+                return false;
+              }); // Hide bindings
+
+              setTimeout(function () {
+                // Delay for Mozilla
+                doc.click(function () {
+                  doc.unbind('click').unbind('keypress');
+                  menu.fadeOut(o.outSpeed);
+                  return false;
+                });
+              }, 0);
+              return undefined;
             });
           }); // Disable text selection
 
@@ -24174,6 +24662,16 @@
     if (precision === undefined) precision = 0;
     return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);
   }
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+
+  var isNullish$1 = function isNullish(val) {
+    return val === null || val === undefined;
+  };
   /**
   * @function module:jPicker.jPicker
   * @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})
@@ -24210,6 +24708,7 @@
     /**
     * Encapsulate slider functionality for the ColorMap and ColorBar -
     * could be useful to use a jQuery UI draggable for this with certain extensions.
+    * @memberof module:jPicker
     * @param {external:jQuery} bar
     * @param {module:jPicker.SliderOptions} options
     * @returns {undefined}
@@ -24219,13 +24718,23 @@
     var Slider = function Slider(bar, options) {
       _classCallCheck(this, Slider);
 
-      var $this = this;
+      var that = this;
+      /**
+       * Fire events on the supplied `context`
+       * @param {module:jPicker.JPickerInit} context
+       * @returns {undefined}
+       */
 
       function fireChangeEvents(context) {
-        for (var i = 0; i < changeEvents.length; i++) {
-          changeEvents[i].call($this, $this, context);
-        }
-      } // bind the mousedown to the bar not the arrow for quick snapping to the clicked location
+        changeEvents.forEach(function (changeEvent) {
+          changeEvent.call(that, that, context);
+        });
+      }
+      /**
+       * Bind the mousedown to the bar not the arrow for quick snapping to the clicked location.
+       * @param {external:jQuery.Event} e
+       * @returns {undefined}
+       */
 
 
       function mouseDown(e) {
@@ -24233,27 +24742,38 @@
         offset = {
           l: off.left | 0,
           t: off.top | 0
-        };
+        }; // eslint-disable-line no-bitwise
+
         clearTimeout(timeout); // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run
 
         timeout = setTimeout(function () {
-          setValuesFromMousePosition.call($this, e);
+          setValuesFromMousePosition.call(that, e);
         }, 0); // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing
 
         $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);
         e.preventDefault(); // don't try to select anything or drag the image to the desktop
-      } // set the values as the mouse moves
+      }
+      /**
+       * Set the values as the mouse moves.
+       * @param {external:jQuery.Event} e
+       * @returns {false}
+       */
 
 
       function mouseMove(e) {
         clearTimeout(timeout);
         timeout = setTimeout(function () {
-          setValuesFromMousePosition.call($this, e);
+          setValuesFromMousePosition.call(that, e);
         }, 0);
         e.stopPropagation();
         e.preventDefault();
         return false;
-      } // unbind the document events - they aren't needed when not dragging
+      }
+      /**
+       * Unbind the document events - they aren't needed when not dragging.
+       * @param {external:jQuery.Event} e
+       * @returns {false}
+       */
 
 
       function mouseUp(e) {
@@ -24261,7 +24781,12 @@
         e.stopPropagation();
         e.preventDefault();
         return false;
-      } // calculate mouse position and set value within the current range
+      }
+      /**
+       * Calculate mouse position and set value within the current range.
+       * @param {Event} e
+       * @returns {undefined}
+       */
 
 
       function setValuesFromMousePosition(e) {
@@ -24273,11 +24798,16 @@
 
         if (locX < 0) locX = 0;else if (locX > barW) locX = barW;
         if (locY < 0) locY = 0;else if (locY > barH) locY = barH;
-        val.call($this, 'xy', {
+        val.call(that, 'xy', {
           x: locX / barW * rangeX + minX,
           y: locY / barH * rangeY + minY
         });
       }
+      /**
+       *
+       * @returns {undefined}
+       */
+
 
       function draw() {
         var barW = bar.w,
@@ -24287,6 +24817,7 @@
         var arrowOffsetX = 0,
             arrowOffsetY = 0;
         setTimeout(function () {
+          /* eslint-disable no-bitwise */
           if (rangeX > 0) {
             // range is greater than zero
             // constrain to bounds
@@ -24309,14 +24840,23 @@
             left: arrowOffsetX + 'px',
             top: arrowOffsetY + 'px'
           });
-        }, 0);
+          /* eslint no-bitwise: ["error"] */
+        });
       }
+      /**
+       * Get or set a value.
+       * @param {?("xy"|"x"|"y")} name
+       * @param {module:math.XYObject} value
+       * @param {module:jPicker.Slider} context
+       * @returns {module:math.XYObject|Float|undefined}
+       */
+
 
       function val(name, value, context) {
         var set = value !== undefined;
 
         if (!set) {
-          if (name === undefined || name == null) name = 'xy';
+          if (isNullish$1(name)) name = 'xy';
 
           switch (name.toLowerCase()) {
             case 'x':
@@ -24334,10 +24874,10 @@
           }
         }
 
-        if (context != null && context === $this) return;
+        if (!isNullish$1(context) && context === that) return undefined;
         var changed = false;
         var newX, newY;
-        if (name == null) name = 'xy';
+        if (isNullish$1(name)) name = 'xy';
 
         switch (name.toLowerCase()) {
           case 'x':
@@ -24355,7 +24895,7 @@
             break;
         }
 
-        if (newX != null) {
+        if (!isNullish$1(newX)) {
           if (newX < minX) newX = minX;else if (newX > maxX) newX = maxX;
 
           if (x !== newX) {
@@ -24364,7 +24904,7 @@
           }
         }
 
-        if (newY != null) {
+        if (!isNullish$1(newY)) {
           if (newY < minY) newY = minY;else if (newY > maxY) newY = maxY;
 
           if (y !== newY) {
@@ -24373,14 +24913,40 @@
           }
         }
 
-        changed && fireChangeEvents.call($this, context || $this);
+        changed && fireChangeEvents.call(that, context || that);
+        return undefined;
       }
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeX
+      * @property {Float} minX
+      * @property {Float} maxX
+      * @property {Float} rangeX
+      */
+
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeY
+      * @property {Float} minY
+      * @property {Float} maxY
+      * @property {Float} rangeY
+      */
+
+      /**
+      * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY
+      */
+
+      /**
+       *
+       * @param {"minx"|"maxx"|"rangex"|"miny"|"maxy"|"rangey"|"all"} name
+       * @param {module:jPicker.MinMaxRangeXY} value
+       * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}
+       */
+
 
       function range(name, value) {
         var set = value !== undefined;
 
         if (!set) {
-          if (name === undefined || name == null) name = 'all';
+          if (isNullish$1(name)) name = 'all';
 
           switch (name.toLowerCase()) {
             case 'minx':
@@ -24424,7 +24990,8 @@
 
         var // changed = false,
         newMinX, newMaxX, newMinY, newMaxY;
-        if (name == null) name = 'all';
+        if (isNullish$1(name)) name = 'all';
+        /* eslint-disable no-bitwise */
 
         switch (name.toLowerCase()) {
           case 'minx':
@@ -24461,33 +25028,49 @@
             newMaxY = value && value.maxY && value.maxY | 0 || 0;
             break;
         }
+        /* eslint no-bitwise: ["error"] */
 
-        if (newMinX != null && minX !== newMinX) {
+
+        if (!isNullish$1(newMinX) && minX !== newMinX) {
           minX = newMinX;
           rangeX = maxX - minX;
         }
 
-        if (newMaxX != null && maxX !== newMaxX) {
+        if (!isNullish$1(newMaxX) && maxX !== newMaxX) {
           maxX = newMaxX;
           rangeX = maxX - minX;
         }
 
-        if (newMinY != null && minY !== newMinY) {
+        if (!isNullish$1(newMinY) && minY !== newMinY) {
           minY = newMinY;
           rangeY = maxY - minY;
         }
 
-        if (newMaxY != null && maxY !== newMaxY) {
+        if (!isNullish$1(newMaxY) && maxY !== newMaxY) {
           maxY = newMaxY;
           rangeY = maxY - minY;
         }
+
+        return undefined;
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function bind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback === 'function') changeEvents.push(callback);
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function unbind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback !== 'function') return;
         var i;
 
@@ -24495,6 +25078,11 @@
           changeEvents.splice(i, 1);
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function destroy() {
         // unbind all possible events and null objects
@@ -24518,8 +25106,9 @@
           arrow = bar.find('img:first'),
           // the arrow image to drag
       changeEvents = [];
-      $.extend(true, $this, // public properties, methods, and event bindings - these we need to access from other controls
-      {
+      $.extend(true, // public properties, methods, and event bindings - these we need
+      //   to access from other controls
+      that, {
         val: val,
         range: range,
         bind: bind,
@@ -24534,29 +25123,45 @@
       bar.h = options.map && options.map.height || bar.height(); // bind mousedown event
 
       bar.bind('mousedown', mouseDown);
-      bind.call($this, draw);
-    }; // controls for all the input elements for the typing in color values
+      bind.call(that, draw);
+    };
+    /**
+     * Controls for all the input elements for the typing in color values.
+     * @param {external:jQuery} picker
+     * @param {external:jQuery.jPicker.Color} color
+     * @param {external:jQuery.fn.$.fn.jPicker} bindedHex
+     * @param {Float} alphaPrecision
+     * @constructor
+     */
 
 
-    function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
-      var $this = this; // private properties and methods
+    var ColorValuePicker = function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
+      _classCallCheck(this, ColorValuePicker);
+
+      var that = this; // private properties and methods
 
       var inputs = picker.find('td.Text input'); // input box key down - use arrows to alter color
 
+      /**
+       *
+       * @param {Event} e
+       * @returns {Event|false|undefined}
+       */
+
       function keyDown(e) {
-        if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+        if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
         if (!validateKey(e)) return e;
 
         switch (e.target) {
           case red.get(0):
             switch (e.keyCode) {
               case 38:
-                red.val(setValueInRange.call($this, (red.val() << 0) + 1, 0, 255));
+                red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));
                 color.val('r', red.val(), e.target);
                 return false;
 
               case 40:
-                red.val(setValueInRange.call($this, (red.val() << 0) - 1, 0, 255));
+                red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));
                 color.val('r', red.val(), e.target);
                 return false;
             }
@@ -24566,12 +25171,12 @@
           case green.get(0):
             switch (e.keyCode) {
               case 38:
-                green.val(setValueInRange.call($this, (green.val() << 0) + 1, 0, 255));
+                green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));
                 color.val('g', green.val(), e.target);
                 return false;
 
               case 40:
-                green.val(setValueInRange.call($this, (green.val() << 0) - 1, 0, 255));
+                green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));
                 color.val('g', green.val(), e.target);
                 return false;
             }
@@ -24581,12 +25186,12 @@
           case blue.get(0):
             switch (e.keyCode) {
               case 38:
-                blue.val(setValueInRange.call($this, (blue.val() << 0) + 1, 0, 255));
+                blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));
                 color.val('b', blue.val(), e.target);
                 return false;
 
               case 40:
-                blue.val(setValueInRange.call($this, (blue.val() << 0) - 1, 0, 255));
+                blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));
                 color.val('b', blue.val(), e.target);
                 return false;
             }
@@ -24596,12 +25201,12 @@
           case alpha && alpha.get(0):
             switch (e.keyCode) {
               case 38:
-                alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) + 1, 0, 100));
+                alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));
                 color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
                 return false;
 
               case 40:
-                alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) - 1, 0, 100));
+                alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));
                 color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
                 return false;
             }
@@ -24611,12 +25216,12 @@
           case hue.get(0):
             switch (e.keyCode) {
               case 38:
-                hue.val(setValueInRange.call($this, (hue.val() << 0) + 1, 0, 360));
+                hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));
                 color.val('h', hue.val(), e.target);
                 return false;
 
               case 40:
-                hue.val(setValueInRange.call($this, (hue.val() << 0) - 1, 0, 360));
+                hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));
                 color.val('h', hue.val(), e.target);
                 return false;
             }
@@ -24626,12 +25231,12 @@
           case saturation.get(0):
             switch (e.keyCode) {
               case 38:
-                saturation.val(setValueInRange.call($this, (saturation.val() << 0) + 1, 0, 100));
+                saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));
                 color.val('s', saturation.val(), e.target);
                 return false;
 
               case 40:
-                saturation.val(setValueInRange.call($this, (saturation.val() << 0) - 1, 0, 100));
+                saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));
                 color.val('s', saturation.val(), e.target);
                 return false;
             }
@@ -24641,58 +25246,66 @@
           case value.get(0):
             switch (e.keyCode) {
               case 38:
-                value.val(setValueInRange.call($this, (value.val() << 0) + 1, 0, 100));
+                value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));
                 color.val('v', value.val(), e.target);
                 return false;
 
               case 40:
-                value.val(setValueInRange.call($this, (value.val() << 0) - 1, 0, 100));
+                value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));
                 color.val('v', value.val(), e.target);
                 return false;
             }
 
             break;
         }
+
+        return undefined;
       } // input box key up - validate value and set color
 
+      /**
+      * @param {Event} e
+      * @returns {Event|undefined}
+      * @todo Why is this returning an event?
+      */
+
 
       function keyUp(e) {
-        if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+        if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
         if (!validateKey(e)) return e;
 
         switch (e.target) {
           case red.get(0):
-            red.val(setValueInRange.call($this, red.val(), 0, 255));
+            red.val(setValueInRange.call(that, red.val(), 0, 255));
             color.val('r', red.val(), e.target);
             break;
 
           case green.get(0):
-            green.val(setValueInRange.call($this, green.val(), 0, 255));
+            green.val(setValueInRange.call(that, green.val(), 0, 255));
             color.val('g', green.val(), e.target);
             break;
 
           case blue.get(0):
-            blue.val(setValueInRange.call($this, blue.val(), 0, 255));
+            blue.val(setValueInRange.call(that, blue.val(), 0, 255));
             color.val('b', blue.val(), e.target);
             break;
 
           case alpha && alpha.get(0):
-            alpha.val(setValueInRange.call($this, alpha.val(), 0, 100));
+            alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));
             color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
             break;
 
           case hue.get(0):
-            hue.val(setValueInRange.call($this, hue.val(), 0, 360));
+            hue.val(setValueInRange.call(that, hue.val(), 0, 360));
             color.val('h', hue.val(), e.target);
             break;
 
           case saturation.get(0):
-            saturation.val(setValueInRange.call($this, saturation.val(), 0, 100));
+            saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));
             color.val('s', saturation.val(), e.target);
             break;
 
           case value.get(0):
-            value.val(setValueInRange.call($this, value.val(), 0, 100));
+            value.val(setValueInRange.call(that, value.val(), 0, 100));
             color.val('v', value.val(), e.target);
             break;
 
@@ -24710,14 +25323,21 @@
 
           case ahex && ahex.get(0):
             ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));
-            color.val('a', ahex.val() != null ? parseInt(ahex.val(), 16) : null, e.target);
+            color.val('a', !isNullish$1(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);
             break;
         }
+
+        return undefined;
       } // input box blur - reset to original if value empty
 
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
+
 
       function blur(e) {
-        if (color.val() != null) {
+        if (!isNullish$1(color.val())) {
           switch (e.target) {
             case red.get(0):
               red.val(color.val('r'));
@@ -24759,6 +25379,11 @@
           }
         }
       }
+      /**
+      * @param {Event} e
+      * @returns {boolean}
+      */
+
 
       function validateKey(e) {
         switch (e.keyCode) {
@@ -24775,7 +25400,14 @@
         }
 
         return true;
-      } // constrain value within range
+      }
+      /**
+      * Constrain value within range.
+      * @param {Float|string} value
+      * @param {Float} min
+      * @param {Float} max
+      * @returns {Float|string} Returns a number or numeric string
+      */
 
 
       function setValueInRange(value, min, max) {
@@ -24784,23 +25416,33 @@
         if (value < min) return min;
         return value;
       }
+      /**
+      * @param {external:jQuery} ui
+      * @param {Element} context
+      * @returns {undefined}
+      */
+
 
       function colorChanged(ui, context) {
         var all = ui.val('all');
-        if (context !== red.get(0)) red.val(all != null ? all.r : '');
-        if (context !== green.get(0)) green.val(all != null ? all.g : '');
-        if (context !== blue.get(0)) blue.val(all != null ? all.b : '');
-        if (alpha && context !== alpha.get(0)) alpha.val(all != null ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
-        if (context !== hue.get(0)) hue.val(all != null ? all.h : '');
-        if (context !== saturation.get(0)) saturation.val(all != null ? all.s : '');
-        if (context !== value.get(0)) value.val(all != null ? all.v : '');
-        if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(all != null ? all.hex : '');
-        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(all != null ? all.hex : '');
-        if (ahex && context !== ahex.get(0)) ahex.val(all != null ? all.ahex.substring(6) : '');
+        if (context !== red.get(0)) red.val(!isNullish$1(all) ? all.r : '');
+        if (context !== green.get(0)) green.val(!isNullish$1(all) ? all.g : '');
+        if (context !== blue.get(0)) blue.val(!isNullish$1(all) ? all.b : '');
+        if (alpha && context !== alpha.get(0)) alpha.val(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
+        if (context !== hue.get(0)) hue.val(!isNullish$1(all) ? all.h : '');
+        if (context !== saturation.get(0)) saturation.val(!isNullish$1(all) ? all.s : '');
+        if (context !== value.get(0)) value.val(!isNullish$1(all) ? all.v : '');
+        if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(!isNullish$1(all) ? all.hex : '');
+        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish$1(all) ? all.hex : '');
+        if (ahex && context !== ahex.get(0)) ahex.val(!isNullish$1(all) ? all.ahex.substring(6) : '');
       }
+      /**
+      * Unbind all events and null objects.
+      * @returns {undefined}
+      */
+
 
       function destroy() {
-        // unbind all events and null objects
         red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);
         red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);
         color.unbind(colorChanged);
@@ -24824,25 +25466,25 @@
           value = inputs.eq(2),
           hex = inputs.eq(inputs.length > 7 ? 7 : 6),
           ahex = inputs.length > 7 ? inputs.eq(8) : null;
-      $.extend(true, $this, {
+      $.extend(true, that, {
         // public properties and methods
         destroy: destroy
       });
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);
       color.bind(colorChanged);
-    }
+    };
     /**
     * @typedef {PlainObject} module:jPicker.JPickerInit
-    * @property {Integer} a
-    * @property {Integer} b
-    * @property {Integer} g
-    * @property {Integer} h
-    * @property {Integer} r
-    * @property {Integer} s
-    * @property {Integer} v
-    * @property {string} hex
-    * @property {string} ahex
+    * @property {Integer} [a]
+    * @property {Integer} [b]
+    * @property {Integer} [g]
+    * @property {Integer} [h]
+    * @property {Integer} [r]
+    * @property {Integer} [s]
+    * @property {Integer} [v]
+    * @property {string} [hex]
+    * @property {string} [ahex]
     */
 
     /**
@@ -24872,13 +25514,26 @@
       * @param {module:jPicker.JPickerInit} init
       */
       Color: function Color(init) {
-        var $this = this;
+        // eslint-disable-line object-shorthand
+        var that = this;
+        /**
+         *
+         * @param {module:jPicker.Slider} context
+         * @returns {undefined}
+         */
 
         function fireChangeEvents(context) {
           for (var i = 0; i < changeEvents.length; i++) {
-            changeEvents[i].call($this, $this, context);
+            changeEvents[i].call(that, that, context);
           }
         }
+        /**
+         * @param {string|"ahex"|"hex"|"all"|""|null|undefined} name String composed of letters "r", "g", "b", "a", "h", "s", and/or "v"
+         * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]
+         * @param {external:jQuery.jPicker.Color} context
+         * @returns {module:jPicker.JPickerInit|string|null|undefined}
+         */
+
 
         function val(name, value, context) {
           // Kind of ugly
@@ -24886,8 +25541,9 @@
           if (set && value.ahex === '') value.ahex = '00000000';
 
           if (!set) {
-            if (name === undefined || name == null || name === '') name = 'all';
-            if (r == null) return null;
+            var ret;
+            if (isNullish$1(name) || name === '') name = 'all';
+            if (isNullish$1(r)) return null;
 
             switch (name.toLowerCase()) {
               case 'ahex':
@@ -24910,261 +25566,281 @@
                   h: h,
                   s: s,
                   v: v,
-                  hex: val.call($this, 'hex'),
-                  ahex: val.call($this, 'ahex')
+                  hex: val.call(that, 'hex'),
+                  ahex: val.call(that, 'ahex')
                 };
 
               default:
-                var ret = {};
-                var nameLength = name.length;
+                {
+                  ret = {};
+                  var nameLength = name.length;
 
-                for (var i = 0; i < nameLength; i++) {
-                  switch (name.charAt(i)) {
-                    case 'r':
-                      if (nameLength === 1) ret = r;else ret.r = r;
-                      break;
+                  _toConsumableArray(name).forEach(function (ch) {
+                    switch (ch) {
+                      case 'r':
+                        if (nameLength === 1) ret = r;else ret.r = r;
+                        break;
 
-                    case 'g':
-                      if (nameLength === 1) ret = g;else ret.g = g;
-                      break;
+                      case 'g':
+                        if (nameLength === 1) ret = g;else ret.g = g;
+                        break;
 
-                    case 'b':
-                      if (nameLength === 1) ret = b;else ret.b = b;
-                      break;
+                      case 'b':
+                        if (nameLength === 1) ret = b;else ret.b = b;
+                        break;
 
-                    case 'a':
-                      if (nameLength === 1) ret = a;else ret.a = a;
-                      break;
+                      case 'a':
+                        if (nameLength === 1) ret = a;else ret.a = a;
+                        break;
 
-                    case 'h':
-                      if (nameLength === 1) ret = h;else ret.h = h;
-                      break;
+                      case 'h':
+                        if (nameLength === 1) ret = h;else ret.h = h;
+                        break;
 
-                    case 's':
-                      if (nameLength === 1) ret = s;else ret.s = s;
-                      break;
+                      case 's':
+                        if (nameLength === 1) ret = s;else ret.s = s;
+                        break;
 
-                    case 'v':
-                      if (nameLength === 1) ret = v;else ret.v = v;
-                      break;
-                  }
+                      case 'v':
+                        if (nameLength === 1) ret = v;else ret.v = v;
+                        break;
+                    }
+                  });
                 }
-
-                return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call($this, 'all') : ret;
             }
+
+            return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call(that, 'all') : ret;
           }
 
-          if (context != null && context === $this) return;
-          if (name == null) name = '';
+          if (!isNullish$1(context) && context === that) return undefined;
+          if (isNullish$1(name)) name = '';
           var changed = false;
 
-          if (value == null) {
-            if (r != null) {
+          if (isNullish$1(value)) {
+            if (!isNullish$1(r)) {
               r = null;
               changed = true;
             }
 
-            if (g != null) {
+            if (!isNullish$1(g)) {
               g = null;
               changed = true;
             }
 
-            if (b != null) {
+            if (!isNullish$1(b)) {
               b = null;
               changed = true;
             }
 
-            if (a != null) {
+            if (!isNullish$1(a)) {
               a = null;
               changed = true;
             }
 
-            if (h != null) {
+            if (!isNullish$1(h)) {
               h = null;
               changed = true;
             }
 
-            if (s != null) {
+            if (!isNullish$1(s)) {
               s = null;
               changed = true;
             }
 
-            if (v != null) {
+            if (!isNullish$1(v)) {
               v = null;
               changed = true;
             }
 
-            changed && fireChangeEvents.call($this, context || $this);
-            return;
+            changed && fireChangeEvents.call(that, context || that);
+            return undefined;
           }
 
           switch (name.toLowerCase()) {
             case 'ahex':
             case 'hex':
-              var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
+              {
+                var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
 
-              val.call($this, 'rgba', {
-                r: _ret.r,
-                g: _ret.g,
-                b: _ret.b,
-                a: name === 'ahex' ? _ret.a : a != null ? a : 255
-              }, context);
-              break;
+                val.call(that, 'rgba', {
+                  r: _ret.r,
+                  g: _ret.g,
+                  b: _ret.b,
+                  a: name === 'ahex' ? _ret.a : !isNullish$1(a) ? a : 255
+                }, context);
+                break;
+              }
 
             default:
-              if (value && (value.ahex != null || value.hex != null)) {
-                val.call($this, 'ahex', value.ahex || value.hex || '00000000', context);
-                return;
-              }
-
-              var newV = {};
-              var rgb = false,
-                  hsv = false;
-              if (value.r !== undefined && !name.includes('r')) name += 'r';
-              if (value.g !== undefined && !name.includes('g')) name += 'g';
-              if (value.b !== undefined && !name.includes('b')) name += 'b';
-              if (value.a !== undefined && !name.includes('a')) name += 'a';
-              if (value.h !== undefined && !name.includes('h')) name += 'h';
-              if (value.s !== undefined && !name.includes('s')) name += 's';
-              if (value.v !== undefined && !name.includes('v')) name += 'v';
-
-              for (var _i = 0; _i < name.length; _i++) {
-                switch (name.charAt(_i)) {
-                  case 'r':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.r = value.r && value.r | 0 || value | 0 || 0;
-                    if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
-
-                    if (r !== newV.r) {
-                      r = newV.r;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'g':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
-                    if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
-
-                    if (g !== newV.g) {
-                      g = newV.g;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'b':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
-                    if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
-
-                    if (b !== newV.b) {
-                      b = newV.b;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'a':
-                    newV.a = value && value.a != null ? value.a | 0 : value | 0;
-                    if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
-
-                    if (a !== newV.a) {
-                      a = newV.a;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'h':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
-                    if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
-
-                    if (h !== newV.h) {
-                      h = newV.h;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 's':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.s = value.s != null ? value.s | 0 : value | 0;
-                    if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
-
-                    if (s !== newV.s) {
-                      s = newV.s;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'v':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.v = value.v != null ? value.v | 0 : value | 0;
-                    if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
-
-                    if (v !== newV.v) {
-                      v = newV.v;
-                      changed = true;
-                    }
-
-                    break;
-                }
-              }
-
-              if (changed) {
-                if (rgb) {
-                  r = r || 0;
-                  g = g || 0;
-                  b = b || 0;
-
-                  var _ret2 = ColorMethods.rgbToHsv({
-                    r: r,
-                    g: g,
-                    b: b
-                  });
-
-                  h = _ret2.h;
-                  s = _ret2.s;
-                  v = _ret2.v;
-                } else if (hsv) {
-                  h = h || 0;
-                  s = s != null ? s : 100;
-                  v = v != null ? v : 100;
-
-                  var _ret3 = ColorMethods.hsvToRgb({
-                    h: h,
-                    s: s,
-                    v: v
-                  });
-
-                  r = _ret3.r;
-                  g = _ret3.g;
-                  b = _ret3.b;
+              {
+                if (value && (!isNullish$1(value.ahex) || !isNullish$1(value.hex))) {
+                  val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);
+                  return undefined;
                 }
 
-                a = a != null ? a : 255;
-                fireChangeEvents.call($this, context || $this);
-              }
+                var newV = {};
+                var rgb = false,
+                    hsv = false;
+                if (value.r !== undefined && !name.includes('r')) name += 'r';
+                if (value.g !== undefined && !name.includes('g')) name += 'g';
+                if (value.b !== undefined && !name.includes('b')) name += 'b';
+                if (value.a !== undefined && !name.includes('a')) name += 'a';
+                if (value.h !== undefined && !name.includes('h')) name += 'h';
+                if (value.s !== undefined && !name.includes('s')) name += 's';
+                if (value.v !== undefined && !name.includes('v')) name += 'v';
 
-              break;
+                _toConsumableArray(name).forEach(function (ch) {
+                  switch (ch) {
+                    case 'r':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.r = value.r && value.r | 0 || value | 0 || 0;
+                      if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
+
+                      if (r !== newV.r) {
+                        r = newV.r;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'g':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
+                      if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
+
+                      if (g !== newV.g) {
+                        g = newV.g;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'b':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
+                      if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
+
+                      if (b !== newV.b) {
+                        b = newV.b;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'a':
+                      newV.a = value && !isNullish$1(value.a) ? value.a | 0 : value | 0;
+                      if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
+
+                      if (a !== newV.a) {
+                        a = newV.a;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'h':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
+                      if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
+
+                      if (h !== newV.h) {
+                        h = newV.h;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 's':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.s = !isNullish$1(value.s) ? value.s | 0 : value | 0;
+                      if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
+
+                      if (s !== newV.s) {
+                        s = newV.s;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'v':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.v = !isNullish$1(value.v) ? value.v | 0 : value | 0;
+                      if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
+
+                      if (v !== newV.v) {
+                        v = newV.v;
+                        changed = true;
+                      }
+
+                      break;
+                  }
+                });
+
+                if (changed) {
+                  if (rgb) {
+                    r = r || 0;
+                    g = g || 0;
+                    b = b || 0;
+
+                    var _ret2 = ColorMethods.rgbToHsv({
+                      r: r,
+                      g: g,
+                      b: b
+                    });
+
+                    h = _ret2.h;
+                    s = _ret2.s;
+                    v = _ret2.v;
+                  } else if (hsv) {
+                    h = h || 0;
+                    s = !isNullish$1(s) ? s : 100;
+                    v = !isNullish$1(v) ? v : 100;
+
+                    var _ret3 = ColorMethods.hsvToRgb({
+                      h: h,
+                      s: s,
+                      v: v
+                    });
+
+                    r = _ret3.r;
+                    g = _ret3.g;
+                    b = _ret3.b;
+                  }
+
+                  a = !isNullish$1(a) ? a : 255;
+                  fireChangeEvents.call(that, context || that);
+                }
+
+                break;
+              }
           }
+
+          return undefined;
         }
+        /**
+        * @param {GenericCallback} callback
+        * @returns {undefined}
+        */
+
 
         function bind(callback) {
+          // eslint-disable-line promise/prefer-await-to-callbacks
           if (typeof callback === 'function') changeEvents.push(callback);
         }
+        /**
+        * @param {GenericCallback} callback
+        * @returns {undefined}
+        */
+
 
         function unbind(callback) {
+          // eslint-disable-line promise/prefer-await-to-callbacks
           if (typeof callback !== 'function') return;
           var i;
 
@@ -25172,6 +25848,11 @@
             changeEvents.splice(i, 1);
           }
         }
+        /**
+        * Unset `changeEvents`
+        * @returns {undefined}
+        */
+
 
         function destroy() {
           changeEvents = null;
@@ -25185,7 +25866,7 @@
             s,
             v,
             changeEvents = [];
-        $.extend(true, $this, {
+        $.extend(true, that, {
           // public properties and methods
           val: val,
           bind: bind,
@@ -25194,16 +25875,16 @@
         });
 
         if (init) {
-          if (init.ahex != null) {
+          if (!isNullish$1(init.ahex)) {
             val('ahex', init);
-          } else if (init.hex != null) {
-            val((init.a != null ? 'a' : '') + 'hex', init.a != null ? {
+          } else if (!isNullish$1(init.hex)) {
+            val((!isNullish$1(init.a) ? 'a' : '') + 'hex', !isNullish$1(init.a) ? {
               ahex: init.hex + ColorMethods.intToHex(init.a)
             } : init);
-          } else if (init.r != null && init.g != null && init.b != null) {
-            val('rgb' + (init.a != null ? 'a' : ''), init);
-          } else if (init.h != null && init.s != null && init.v != null) {
-            val('hsv' + (init.a != null ? 'a' : ''), init);
+          } else if (!isNullish$1(init.r) && !isNullish$1(init.g) && !isNullish$1(init.b)) {
+            val('rgb' + (!isNullish$1(init.a) ? 'a' : ''), init);
+          } else if (!isNullish$1(init.h) && !isNullish$1(init.s) && !isNullish$1(init.v)) {
+            val('hsv' + (!isNullish$1(init.a) ? 'a' : ''), init);
           }
         }
       },
@@ -25378,8 +26059,8 @@
           } else {
             if (h === 360) h = 0;
             h /= 60;
-            s = s / 100;
-            v = v / 100;
+            s /= 100;
+            v /= 100;
             var i = h | 0,
                 f = h - i,
                 p = v * (1 - s),
@@ -25443,6 +26124,28 @@
      * @see {@link external:jQuery.fn.$.fn.jPicker}
      */
 
+    /**
+    * Will be bound to active {@link jQuery.jPicker.Color}
+    * @callback module:jPicker.LiveCallback
+    * @param {external:jQuery} ui
+    * @param {Element} context
+    * @returns {undefined}
+    */
+
+    /**
+    * @callback module:jPicker.CommitCallback
+    * @param {external:jQuery.jPicker.Color} activeColor
+    * @param {external:jQuery} okButton
+    * @returns {undefined} Return value not used.
+    */
+
+    /**
+     * @callback module:jPicker.CancelCallback
+     * @param {external:jQuery.jPicker.Color} activeColor
+     * @param {external:jQuery} cancelButton
+     * @returns {undefined} Return value not used.
+     */
+
     /**
     * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't
     *   get us treated as a function as well as a namespace (even with `@function name`),
@@ -25450,46 +26153,48 @@
     * @namespace
     * @memberof external:jQuery.fn
     * @param {external:jQuery.fn.jPickerOptions} options
+    * @param {module:jPicker.CommitCallback} [commitCallback]
+    * @param {module:jPicker.LiveCallback} [liveCallback]
+    * @param {module:jPicker.CancelCallback} [cancelCallback]
     * @returns {external:jQuery}
     */
 
-    $.fn.jPicker = function (options) {
-      var $arguments = arguments;
+    $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {
       return this.each(function () {
-        var $this = this,
+        var that = this,
             settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor
 
-        if ($($this).get(0).nodeName.toLowerCase() === 'input') {
+        if ($(that).get(0).nodeName.toLowerCase() === 'input') {
           // Add color picker icon if binding to an input element and bind the events to the input
           $.extend(true, settings, {
             window: {
               bindToInput: true,
               expandable: true,
-              input: $($this)
+              input: $(that)
             }
           });
 
-          if ($($this).val() === '') {
+          if ($(that).val() === '') {
             settings.color.active = new Color({
               hex: null
             });
             settings.color.current = new Color({
               hex: null
             });
-          } else if (ColorMethods.validateHex($($this).val())) {
+          } else if (ColorMethods.validateHex($(that).val())) {
             settings.color.active = new Color({
-              hex: $($this).val(),
+              hex: $(that).val(),
               a: settings.color.active.val('a')
             });
             settings.color.current = new Color({
-              hex: $($this).val(),
+              hex: $(that).val(),
               a: settings.color.active.val('a')
             });
           }
         }
 
         if (settings.window.expandable) {
-          $($this).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
+          $(that).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
         } else {
           settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results
         }
@@ -25499,7 +26204,7 @@
 
         /**
          *
-         * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode [description]
+         * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode
          * @throws {Error} Invalid mode
          * @returns {undefined}
          */
@@ -25513,22 +26218,22 @@
           switch (colorMode) {
             case 'h':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, 0);
-                setAlpha.call($this, colorMapL1, 100);
-                setImgLoc.call($this, colorMapL2, 260);
-                setAlpha.call($this, colorMapL2, 100);
-                setBG.call($this, colorBarDiv, 'transparent');
-                setImgLoc.call($this, colorBarL1, 0);
-                setAlpha.call($this, colorBarL1, 100);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL3, 260);
-                setAlpha.call($this, colorBarL3, 100);
-                setImgLoc.call($this, colorBarL4, 260);
-                setAlpha.call($this, colorBarL4, 100);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, 0);
+                setAlpha.call(that, colorMapL1, 100);
+                setImgLoc.call(that, colorMapL2, 260);
+                setAlpha.call(that, colorMapL2, 100);
+                setBG.call(that, colorBarDiv, 'transparent');
+                setImgLoc.call(that, colorBarL1, 0);
+                setAlpha.call(that, colorBarL1, 100);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL3, 260);
+                setAlpha.call(that, colorBarL3, 100);
+                setImgLoc.call(that, colorBarL4, 260);
+                setAlpha.call(that, colorBarL4, 100);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25540,7 +26245,7 @@
                 minY: 0,
                 maxY: 360
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('s'),
                 y: 100 - active.val('v')
@@ -25550,13 +26255,13 @@
 
             case 's':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, -260);
-                setImgLoc.call($this, colorMapL2, -520);
-                setImgLoc.call($this, colorBarL1, -260);
-                setImgLoc.call($this, colorBarL2, -520);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, -260);
+                setImgLoc.call(that, colorMapL2, -520);
+                setImgLoc.call(that, colorBarL1, -260);
+                setImgLoc.call(that, colorBarL2, -520);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25568,7 +26273,7 @@
                 minY: 0,
                 maxY: 100
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('v')
@@ -25578,15 +26283,15 @@
 
             case 'v':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, '000000');
-                setImgLoc.call($this, colorMapL1, -780);
-                setImgLoc.call($this, colorMapL2, 260);
-                setBG.call($this, colorBarDiv, hex);
-                setImgLoc.call($this, colorBarL1, -520);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, '000000');
+                setImgLoc.call(that, colorMapL1, -780);
+                setImgLoc.call(that, colorMapL2, 260);
+                setBG.call(that, colorBarDiv, hex);
+                setImgLoc.call(that, colorBarL1, -520);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25598,7 +26303,7 @@
                 minY: 0,
                 maxY: 100
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('s')
@@ -25619,7 +26324,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('b'),
                 y: 255 - active.val('g')
@@ -25640,7 +26345,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('b'),
                 y: 255 - active.val('r')
@@ -25661,7 +26366,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('r'),
                 y: 255 - active.val('g')
@@ -25671,14 +26376,14 @@
 
             case 'a':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, -260);
-                setImgLoc.call($this, colorMapL2, -520);
-                setImgLoc.call($this, colorBarL1, 260);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL6, 0);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, -260);
+                setImgLoc.call(that, colorMapL2, -520);
+                setImgLoc.call(that, colorBarL1, 260);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL6, 0);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25690,7 +26395,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('v')
@@ -25710,12 +26415,12 @@
             case 'v':
             case 'a':
               setTimeout(function () {
-                setAlpha.call($this, colorMapL1, 100);
-                setAlpha.call($this, colorBarL1, 100);
-                setImgLoc.call($this, colorBarL3, 260);
-                setAlpha.call($this, colorBarL3, 100);
-                setImgLoc.call($this, colorBarL4, 260);
-                setAlpha.call($this, colorBarL4, 100);
+                setAlpha.call(that, colorMapL1, 100);
+                setAlpha.call(that, colorBarL1, 100);
+                setImgLoc.call(that, colorBarL3, 260);
+                setAlpha.call(that, colorBarL3, 100);
+                setImgLoc.call(that, colorBarL4, 260);
+                setAlpha.call(that, colorBarL4, 100);
               }, 0);
               break;
 
@@ -25723,40 +26428,52 @@
             case 'g':
             case 'b':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setBG.call($this, colorBarDiv, 'transparent');
-                setAlpha.call($this, colorBarL1, 100);
-                setAlpha.call($this, colorMapL1, 100);
-                setImgLoc.call($this, colorMapL1, rgbMap);
-                setImgLoc.call($this, colorMapL2, rgbMap - 260);
-                setImgLoc.call($this, colorBarL1, rgbBar - 780);
-                setImgLoc.call($this, colorBarL2, rgbBar - 520);
-                setImgLoc.call($this, colorBarL3, rgbBar);
-                setImgLoc.call($this, colorBarL4, rgbBar - 260);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setBG.call(that, colorBarDiv, 'transparent');
+                setAlpha.call(that, colorBarL1, 100);
+                setAlpha.call(that, colorMapL1, 100);
+                setImgLoc.call(that, colorMapL1, rgbMap);
+                setImgLoc.call(that, colorMapL2, rgbMap - 260);
+                setImgLoc.call(that, colorBarL1, rgbBar - 780);
+                setImgLoc.call(that, colorBarL2, rgbBar - 520);
+                setImgLoc.call(that, colorBarL3, rgbBar);
+                setImgLoc.call(that, colorBarL4, rgbBar - 260);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               break;
           }
 
-          if (active.val('ahex') == null) return;
-          activeColorChanged.call($this, active);
-        } // Update color when user changes text values
+          if (isNullish$1(active.val('ahex'))) return;
+          activeColorChanged.call(that, active);
+        }
+        /**
+         * Update color when user changes text values.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function activeColorChanged(ui, context) {
-          if (context == null || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call($this, ui, context);
+          if (isNullish$1(context) || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call(that, ui, context);
           setTimeout(function () {
-            updatePreview.call($this, ui);
-            updateMapVisuals.call($this, ui);
-            updateBarVisuals.call($this, ui);
+            updatePreview.call(that, ui);
+            updateMapVisuals.call(that, ui);
+            updateBarVisuals.call(that, ui);
           }, 0);
-        } // user has dragged the ColorMap pointer
+        }
+        /**
+         * User has dragged the ColorMap pointer.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function mapValueChanged(ui, context) {
           var active = color.active;
-          if (context !== colorMap && active.val() == null) return;
+          if (context !== colorMap && isNullish$1(active.val())) return;
           var xy = ui.val('all');
 
           switch (settings.color.mode) {
@@ -25803,12 +26520,18 @@
               }, context);
               break;
           }
-        } // user has dragged the ColorBar slider
+        }
+        /**
+         * User has dragged the ColorBar slider.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function colorBarValueChanged(ui, context) {
           var active = color.active;
-          if (context !== colorBar && active.val() == null) return;
+          if (context !== colorBar && isNullish$1(active.val())) return;
 
           switch (settings.color.mode) {
             case 'h':
@@ -25851,60 +26574,79 @@
               active.val('a', 255 - ui.val('y'), context);
               break;
           }
-        } // position map and bar arrows to match current color
+        }
+        /**
+         * Position map and bar arrows to match current color.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function positionMapAndBarArrows(ui, context) {
           if (context !== colorMap) {
             switch (settings.color.mode) {
               case 'h':
-                var sv = ui.val('sv');
-                colorMap.val('xy', {
-                  x: sv != null ? sv.s : 100,
-                  y: 100 - (sv != null ? sv.v : 100)
-                }, context);
-                break;
+                {
+                  var sv = ui.val('sv');
+                  colorMap.val('xy', {
+                    x: !isNullish$1(sv) ? sv.s : 100,
+                    y: 100 - (!isNullish$1(sv) ? sv.v : 100)
+                  }, context);
+                  break;
+                }
+
+              case 's': // Fall through
 
-              case 's':
               case 'a':
-                var hv = ui.val('hv');
-                colorMap.val('xy', {
-                  x: hv && hv.h || 0,
-                  y: 100 - (hv != null ? hv.v : 100)
-                }, context);
-                break;
+                {
+                  var hv = ui.val('hv');
+                  colorMap.val('xy', {
+                    x: hv && hv.h || 0,
+                    y: 100 - (!isNullish$1(hv) ? hv.v : 100)
+                  }, context);
+                  break;
+                }
 
               case 'v':
-                var hs = ui.val('hs');
-                colorMap.val('xy', {
-                  x: hs && hs.h || 0,
-                  y: 100 - (hs != null ? hs.s : 100)
-                }, context);
-                break;
+                {
+                  var hs = ui.val('hs');
+                  colorMap.val('xy', {
+                    x: hs && hs.h || 0,
+                    y: 100 - (!isNullish$1(hs) ? hs.s : 100)
+                  }, context);
+                  break;
+                }
 
               case 'r':
-                var bg = ui.val('bg');
-                colorMap.val('xy', {
-                  x: bg && bg.b || 0,
-                  y: 255 - (bg && bg.g || 0)
-                }, context);
-                break;
+                {
+                  var bg = ui.val('bg');
+                  colorMap.val('xy', {
+                    x: bg && bg.b || 0,
+                    y: 255 - (bg && bg.g || 0)
+                  }, context);
+                  break;
+                }
 
               case 'g':
-                var br = ui.val('br');
-                colorMap.val('xy', {
-                  x: br && br.b || 0,
-                  y: 255 - (br && br.r || 0)
-                }, context);
-                break;
+                {
+                  var br = ui.val('br');
+                  colorMap.val('xy', {
+                    x: br && br.b || 0,
+                    y: 255 - (br && br.r || 0)
+                  }, context);
+                  break;
+                }
 
               case 'b':
-                var rg = ui.val('rg');
-                colorMap.val('xy', {
-                  x: rg && rg.r || 0,
-                  y: 255 - (rg && rg.g || 0)
-                }, context);
-                break;
+                {
+                  var rg = ui.val('rg');
+                  colorMap.val('xy', {
+                    x: rg && rg.r || 0,
+                    y: 255 - (rg && rg.g || 0)
+                  }, context);
+                  break;
+                }
             }
           }
 
@@ -25915,14 +26657,18 @@
                 break;
 
               case 's':
-                var s = ui.val('s');
-                colorBar.val('y', 100 - (s != null ? s : 100), context);
-                break;
+                {
+                  var s = ui.val('s');
+                  colorBar.val('y', 100 - (!isNullish$1(s) ? s : 100), context);
+                  break;
+                }
 
               case 'v':
-                var v = ui.val('v');
-                colorBar.val('y', 100 - (v != null ? v : 100), context);
-                break;
+                {
+                  var v = ui.val('v');
+                  colorBar.val('y', 100 - (!isNullish$1(v) ? v : 100), context);
+                  break;
+                }
 
               case 'r':
                 colorBar.val('y', 255 - (ui.val('r') || 0), context);
@@ -25937,12 +26683,19 @@
                 break;
 
               case 'a':
-                var a = ui.val('a');
-                colorBar.val('y', 255 - (a != null ? a : 255), context);
-                break;
+                {
+                  var a = ui.val('a');
+                  colorBar.val('y', 255 - (!isNullish$1(a) ? a : 255), context);
+                  break;
+                }
             }
           }
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updatePreview(ui) {
           try {
@@ -25950,14 +26703,19 @@
             activePreview.css({
               backgroundColor: all && '#' + all.hex || 'transparent'
             });
-            setAlpha.call($this, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
+            setAlpha.call(that, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
           } catch (e) {}
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updateMapVisuals(ui) {
           switch (settings.color.mode) {
             case 'h':
-              setBG.call($this, colorMapDiv, new Color({
+              setBG.call(that, colorMapDiv, new Color({
                 h: ui.val('h') || 0,
                 s: 100,
                 v: 100
@@ -25966,104 +26724,133 @@
 
             case 's':
             case 'a':
-              var s = ui.val('s');
-              setAlpha.call($this, colorMapL2, 100 - (s != null ? s : 100));
-              break;
+              {
+                var s = ui.val('s');
+                setAlpha.call(that, colorMapL2, 100 - (!isNullish$1(s) ? s : 100));
+                break;
+              }
 
             case 'v':
-              var v = ui.val('v');
-              setAlpha.call($this, colorMapL1, v != null ? v : 100);
-              break;
+              {
+                var v = ui.val('v');
+                setAlpha.call(that, colorMapL1, !isNullish$1(v) ? v : 100);
+                break;
+              }
 
             case 'r':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
               break;
 
             case 'g':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
               break;
 
             case 'b':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
               break;
           }
 
           var a = ui.val('a');
-          setAlpha.call($this, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+          setAlpha.call(that, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updateBarVisuals(ui) {
           switch (settings.color.mode) {
             case 'h':
-              var a = ui.val('a');
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var a = ui.val('a');
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 's':
-              var hva = ui.val('hva'),
-                  saturatedColor = new Color({
-                h: hva && hva.h || 0,
-                s: 100,
-                v: hva != null ? hva.v : 100
-              });
-              setBG.call($this, colorBarDiv, saturatedColor.val('hex'));
-              setAlpha.call($this, colorBarL2, 100 - (hva != null ? hva.v : 100));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var hva = ui.val('hva'),
+                    saturatedColor = new Color({
+                  h: hva && hva.h || 0,
+                  s: 100,
+                  v: !isNullish$1(hva) ? hva.v : 100
+                });
+                setBG.call(that, colorBarDiv, saturatedColor.val('hex'));
+                setAlpha.call(that, colorBarL2, 100 - (!isNullish$1(hva) ? hva.v : 100));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 'v':
-              var hsa = ui.val('hsa'),
-                  valueColor = new Color({
-                h: hsa && hsa.h || 0,
-                s: hsa != null ? hsa.s : 100,
-                v: 100
-              });
-              setBG.call($this, colorBarDiv, valueColor.val('hex'));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var hsa = ui.val('hsa'),
+                    valueColor = new Color({
+                  h: hsa && hsa.h || 0,
+                  s: !isNullish$1(hsa) ? hsa.s : 100,
+                  v: 100
+                });
+                setBG.call(that, colorBarDiv, valueColor.val('hex'));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 'r':
             case 'g':
             case 'b':
-              var rgba = ui.val('rgba');
-              var hValue = 0,
-                  vValue = 0;
+              {
+                var rgba = ui.val('rgba');
+                var hValue = 0,
+                    vValue = 0;
 
-              if (settings.color.mode === 'r') {
-                hValue = rgba && rgba.b || 0;
-                vValue = rgba && rgba.g || 0;
-              } else if (settings.color.mode === 'g') {
-                hValue = rgba && rgba.b || 0;
-                vValue = rgba && rgba.r || 0;
-              } else if (settings.color.mode === 'b') {
-                hValue = rgba && rgba.r || 0;
-                vValue = rgba && rgba.g || 0;
+                if (settings.color.mode === 'r') {
+                  hValue = rgba && rgba.b || 0;
+                  vValue = rgba && rgba.g || 0;
+                } else if (settings.color.mode === 'g') {
+                  hValue = rgba && rgba.b || 0;
+                  vValue = rgba && rgba.r || 0;
+                } else if (settings.color.mode === 'b') {
+                  hValue = rgba && rgba.r || 0;
+                  vValue = rgba && rgba.g || 0;
+                }
+
+                var middle = vValue > hValue ? hValue : vValue;
+                setAlpha.call(that, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
+                setAlpha.call(that, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
+                setAlpha.call(that, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
+                break;
               }
 
-              var middle = vValue > hValue ? hValue : vValue;
-              setAlpha.call($this, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
-              setAlpha.call($this, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
-              setAlpha.call($this, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
-              break;
-
             case 'a':
               {
                 var _a = ui.val('a');
 
-                setBG.call($this, colorBarDiv, ui.val('hex') || '000000');
-                setAlpha.call($this, colorBarL5, _a != null ? 0 : 100);
-                setAlpha.call($this, colorBarL6, _a != null ? 100 : 0);
+                setBG.call(that, colorBarDiv, ui.val('hex') || '000000');
+                setAlpha.call(that, colorBarL5, !isNullish$1(_a) ? 0 : 100);
+                setAlpha.call(that, colorBarL6, !isNullish$1(_a) ? 100 : 0);
                 break;
               }
           }
         }
+        /**
+        * @param {external:jQuery} el
+        * @param {string} [c="transparent"]
+        * @returns {undefined}
+        */
+
 
         function setBG(el, c) {
           el.css({
             backgroundColor: c && c.length === 6 && '#' + c || 'transparent'
           });
         }
+        /**
+        * @param {external:jQuery} img
+        * @param {string} src The image source
+        * @returns {undefined}
+        */
+
 
         function setImg(img, src) {
           if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
@@ -26076,12 +26863,24 @@
             backgroundImage: 'url(\'' + src + '\')'
           });
         }
+        /**
+        * @param {external:jQuery} img
+        * @param {Float} y
+        * @returns {undefined}
+        */
+
 
         function setImgLoc(img, y) {
           img.css({
             top: y + 'px'
           });
         }
+        /**
+        * @param {external:jQuery} obj
+        * @param {Float} alpha
+        * @returns {undefined}
+        */
+
 
         function setAlpha(obj, alpha) {
           obj.css({
@@ -26092,7 +26891,7 @@
             if (isLessThanIE7) {
               var src = obj.attr('pngSrc');
 
-              if (src != null && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
+              if (!isNullish$1(src) && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
                 obj.css({
                   filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'
                 });
@@ -26106,7 +26905,7 @@
             if (isLessThanIE7) {
               var _src = obj.attr('pngSrc');
 
-              if (_src != null && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
+              if (!isNullish$1(_src) && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
                 obj.css({
                   filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + _src + '\', sizingMethod=\'scale\')'
                 });
@@ -26117,66 +26916,114 @@
               opacity: ''
             });
           }
-        } // revert color to original color when opened
+        }
+        /**
+        * Revert color to original color when opened.
+        * @returns {undefined}
+        */
 
 
         function revertColor() {
           color.active.val('ahex', color.current.val('ahex'));
-        } // commit the color changes
+        }
+        /**
+        * Commit the color changes.
+        * @returns {undefined}
+        */
 
 
         function commitColor() {
           color.current.val('ahex', color.active.val('ahex'));
         }
+        /**
+        * @param {Event} e
+        * @returns {undefined}
+        */
+
 
         function radioClicked(e) {
           $(this).parents('tbody:first').find('input:radio[value!="' + e.target.value + '"]').removeAttr('checked');
-          setColorMode.call($this, e.target.value);
+          setColorMode.call(that, e.target.value);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function currentClicked() {
-          revertColor.call($this);
+          revertColor.call(that);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function cancelClicked() {
-          revertColor.call($this);
-          settings.window.expandable && hide.call($this);
-          typeof cancelCallback === 'function' && cancelCallback.call($this, color.active, cancelButton);
+          revertColor.call(that);
+          settings.window.expandable && hide.call(that);
+          typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function okClicked() {
-          commitColor.call($this);
-          settings.window.expandable && hide.call($this);
-          typeof commitCallback === 'function' && commitCallback.call($this, color.active, okButton);
+          commitColor.call(that);
+          settings.window.expandable && hide.call(that);
+          typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function iconImageClicked() {
-          show.call($this);
+          show.call(that);
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
 
-        function currentColorChanged(ui, context) {
+
+        function currentColorChanged(ui) {
           var hex = ui.val('hex');
           currentPreview.css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          setAlpha.call($this, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
+          setAlpha.call(that, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
 
-        function expandableColorChanged(ui, context) {
+
+        function expandableColorChanged(ui) {
           var hex = ui.val('hex');
           var va = ui.val('va');
           iconColor.css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
+          setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
 
           if (settings.window.bindToInput && settings.window.updateInputColor) {
             settings.window.input.css({
               backgroundColor: hex && '#' + hex || 'transparent',
-              color: va == null || va.v > 75 ? '#000000' : '#ffffff'
+              color: isNullish$1(va) || va.v > 75 ? '#000000' : '#ffffff'
             });
           }
         }
+        /**
+        * @param {Event} e
+        * @returns {undefined}
+        */
+
 
         function moveBarMouseDown(e) {
           // const {element} = settings.window, // local copies for YUI compressor
@@ -26189,20 +27036,34 @@
           $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);
           e.preventDefault(); // prevent attempted dragging of the column
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function documentMouseMove(e) {
           container.css({
             left: elementStartX - (pageStartX - e.pageX) + 'px',
             top: elementStartY - (pageStartY - e.pageY) + 'px'
           });
-          if (settings.window.expandable && !$.support.boxModel) container.prev().css({
-            left: container.css('left'),
-            top: container.css('top')
-          });
+
+          if (settings.window.expandable && !$.support.boxModel) {
+            container.prev().css({
+              left: container.css('left'),
+              top: container.css('top')
+            });
+          }
+
           e.stopPropagation();
           e.preventDefault();
           return false;
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function documentMouseUp(e) {
           $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);
@@ -26210,6 +27071,11 @@
           e.preventDefault();
           return false;
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function quickPickClicked(e) {
           e.preventDefault();
@@ -26217,9 +27083,18 @@
           color.active.val('ahex', $(this).attr('title') || null, e.target);
           return false;
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function show() {
           color.current.val('ahex', color.active.val('ahex'));
+          /**
+          *
+          * @returns {undefined}
+          */
 
           function attachIFrame() {
             if (!settings.window.expandable || $.support.boxModel) return;
@@ -26259,8 +27134,17 @@
               break;
           }
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function hide() {
+          /**
+          *
+          * @returns {undefined}
+          */
           function removeIFrame() {
             if (settings.window.expandable) container.css({
               zIndex: 10
@@ -26284,23 +27168,29 @@
               break;
           }
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function initialize() {
           var win = settings.window,
-              popup = win.expandable ? $($this).next().find('.Container:first') : null;
-          container = win.expandable ? $('<div/>') : $($this);
+              popup = win.expandable ? $(that).next().find('.Container:first') : null;
+          container = win.expandable ? $('<div/>') : $(that);
           container.addClass('jPicker Container');
           if (win.expandable) container.hide();
 
-          container.get(0).onselectstart = function (event) {
-            if (event.target.nodeName.toLowerCase() !== 'input') return false;
+          container.get(0).onselectstart = function (e) {
+            if (e.target.nodeName.toLowerCase() !== 'input') return false;
+            return true;
           }; // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and
           // this control really is tabular data, so I believe it is the right move
 
 
           var all = color.active.val('all');
           if (win.alphaPrecision < 0) win.alphaPrecision = 0;else if (win.alphaPrecision > 2) win.alphaPrecision = 2;
-          var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(all != null ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(all != null ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(all != null ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
+          var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(!isNullish$1(all) ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(!isNullish$1(all) ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
 
           if (win.expandable) {
             container.html(controlHtml);
@@ -26326,7 +27216,7 @@
               top: win.position.y === 'top' ? popup.offset().top - 312 + 'px' : win.position.y === 'center' ? popup.offset().top - 156 + 'px' : win.position.y === 'bottom' ? popup.offset().top + 25 + 'px' : popup.offset().top + parseInt(win.position.y) + 'px'
             });
           } else {
-            container = $($this);
+            container = $(that);
             container.html(controlHtml);
           } // initialize the objects to the source code just injected
 
@@ -26371,7 +27261,7 @@
           });
           colorBar.bind(colorBarValueChanged);
           colorPicker = new ColorValuePicker(tbody, color.active, win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision);
-          var hex = all != null ? all.hex : null,
+          var hex = !isNullish$1(all) ? all.hex : null,
               preview = tbody.find('.Preview'),
               button = tbody.find('.Button');
           activePreview = preview.find('.Active:first').css({
@@ -26380,21 +27270,21 @@
           currentPreview = preview.find('.Current:first').css({
             backgroundColor: hex && '#' + hex || 'transparent'
           }).bind('click', currentClicked);
-          setAlpha.call($this, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
+          setAlpha.call(that, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
           okButton = button.find('.Ok:first').bind('click', okClicked);
           cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);
           grid = button.find('.Grid:first');
           setTimeout(function () {
-            setImg.call($this, colorMapL1, images.clientPath + 'Maps.png');
-            setImg.call($this, colorMapL2, images.clientPath + 'Maps.png');
-            setImg.call($this, colorMapL3, images.clientPath + 'map-opacity.png');
-            setImg.call($this, colorBarL1, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL2, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL3, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL4, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL5, images.clientPath + 'bar-opacity.png');
-            setImg.call($this, colorBarL6, images.clientPath + 'AlphaBar.png');
-            setImg.call($this, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
+            setImg.call(that, colorMapL1, images.clientPath + 'Maps.png');
+            setImg.call(that, colorMapL2, images.clientPath + 'Maps.png');
+            setImg.call(that, colorMapL3, images.clientPath + 'map-opacity.png');
+            setImg.call(that, colorBarL1, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL2, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL3, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL4, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL5, images.clientPath + 'bar-opacity.png');
+            setImg.call(that, colorBarL6, images.clientPath + 'AlphaBar.png');
+            setImg.call(that, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
           }, 0);
           tbody.find('td.Radio input').bind('click', radioClicked); // initialize quick list
 
@@ -26406,47 +27296,55 @@
               if (_typeof(color.quickList[i]).toString().toLowerCase() === 'string') color.quickList[i] = new Color({
                 hex: color.quickList[i]
               });
-              var alpha = color.quickList[i].val('a');
-              var ahex = color.quickList[i].val('ahex');
-              if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';
+
+              var _alpha = color.quickList[i].val('a');
+
+              var _ahex = color.quickList[i].val('ahex');
+
+              if (!win.alphaSupport && _ahex) _ahex = _ahex.substring(0, 6) + 'ff';
               var quickHex = color.quickList[i].val('hex');
-              if (!ahex) ahex = '00000000';
-              html += '<span class="QuickColor"' + (' title="#' + ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
+              if (!_ahex) _ahex = '00000000';
+              html += '<span class="QuickColor"' + (' title="#' + _ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && _alpha && _alpha < 255 ? ';opacity:' + toFixedNumeric(_alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(_alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
             }
 
-            setImg.call($this, grid, images.clientPath + 'bar-opacity.png');
+            setImg.call(that, grid, images.clientPath + 'bar-opacity.png');
             grid.html(html);
             grid.find('.QuickColor').click(quickPickClicked);
           }
 
-          setColorMode.call($this, settings.color.mode);
+          setColorMode.call(that, settings.color.mode);
           color.active.bind(activeColorChanged);
           typeof liveCallback === 'function' && color.active.bind(liveCallback);
           color.current.bind(currentColorChanged); // bind to input
 
           if (win.expandable) {
-            $this.icon = popup.parents('.Icon:first');
-            iconColor = $this.icon.find('.Color:first').css({
+            that.icon = popup.parents('.Icon:first');
+            iconColor = that.icon.find('.Color:first').css({
               backgroundColor: hex && '#' + hex || 'transparent'
             });
-            iconAlpha = $this.icon.find('.Alpha:first');
-            setImg.call($this, iconAlpha, images.clientPath + 'bar-opacity.png');
-            setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (all != null ? all.a : 0)) * 100 / 255, 4));
-            iconImage = $this.icon.find('.Image:first').css({
+            iconAlpha = that.icon.find('.Alpha:first');
+            setImg.call(that, iconAlpha, images.clientPath + 'bar-opacity.png');
+            setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (!isNullish$1(all) ? all.a : 0)) * 100 / 255, 4));
+            iconImage = that.icon.find('.Image:first').css({
               backgroundImage: 'url(\'' + images.clientPath + images.picker.file + '\')'
             }).bind('click', iconImageClicked);
 
             if (win.bindToInput && win.updateInputColor) {
               win.input.css({
                 backgroundColor: hex && '#' + hex || 'transparent',
-                color: all == null || all.v > 75 ? '#000000' : '#ffffff'
+                color: isNullish$1(all) || all.v > 75 ? '#000000' : '#ffffff'
               });
             }
 
             moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);
             color.active.bind(expandableColorChanged);
-          } else show.call($this);
+          } else show.call(that);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function destroy() {
           container.find('td.Radio input').unbind('click', radioClicked);
@@ -26457,7 +27355,7 @@
           if (settings.window.expandable) {
             iconImage.unbind('click', iconImageClicked);
             moveBar.unbind('mousedown', moveBarMouseDown);
-            $this.icon = null;
+            that.icon = null;
           }
 
           container.find('.QuickColor').unbind('click', quickPickClicked);
@@ -26489,7 +27387,7 @@
           container.html('');
 
           for (var i = 0; i < List.length; i++) {
-            if (List[i] === $this) {
+            if (List[i] === that) {
               List.splice(i, 1);
             }
           }
@@ -26511,6 +27409,19 @@
           }),
           quickList: settings.color.quickList
         };
+
+        if (typeof commitCallback !== 'function') {
+          commitCallback = null;
+        }
+
+        if (typeof liveCallback !== 'function') {
+          liveCallback = null;
+        }
+
+        if (typeof cancelCallback !== 'function') {
+          cancelCallback = null;
+        }
+
         var elementStartX = null,
             // Used to record the starting css positions for dragging the control
         elementStartY = null,
@@ -26547,12 +27458,9 @@
             // iconAlpha for popup icon
         iconImage = null,
             // iconImage popup icon
-        moveBar = null,
-            // drag bar
-        commitCallback = typeof $arguments[1] === 'function' ? $arguments[1] : null,
-            liveCallback = typeof $arguments[2] === 'function' ? $arguments[2] : null,
-            cancelCallback = typeof $arguments[3] === 'function' ? $arguments[3] : null;
-        $.extend(true, $this, {
+        moveBar = null; // drag bar
+
+        $.extend(true, that, {
           // public properties, methods, and callbacks
           commitCallback: commitCallback,
           // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks "OK"
@@ -26566,9 +27474,9 @@
           destroy: destroy // destroys this control entirely, removing all events and objects, and removing itself from the List
 
         });
-        List.push($this);
+        List.push(that);
         setTimeout(function () {
-          initialize.call($this);
+          initialize.call(that);
         }, 0);
       });
     };
@@ -26613,6 +27521,9 @@
     * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do
     * not map directly to percentage integers - range 0-2
     * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing
+    * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`
+    * @property {boolean} [window.expandable] Added by `$.fn.jPicker`
+    * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`
     * @property {PlainObject} color
     * @property {"h"|"s"|"v"|"r"|"g"|"b"|"a"} color.mode Symbols stand for "h" (hue), "s" (saturation), "v" (value), "r" (red), "g" (green), "b" (blue), "a" (alpha)
     * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the "#" prefix
@@ -27069,7 +27980,7 @@
           val = _ref2[1];
 
       if (!val) {
-        console.log(sel);
+        console.log(sel); // eslint-disable-line no-console
       }
 
       if (ids) {
@@ -27088,6 +27999,8 @@
                 node.textContent = val;
                 return true;
               }
+
+              return false;
             });
 
             break;
@@ -27097,7 +28010,7 @@
             break;
         }
       } else {
-        console.log('Missing: ' + sel);
+        console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console
       }
     });
   };
@@ -27170,7 +28083,7 @@
                 break;
               }
 
-              return _context.abrupt("return");
+              return _context.abrupt("return", undefined);
 
             case 6:
               _langData = langData, tools = _langData.tools, properties = _langData.properties, config = _langData.config, layers = _langData.layers, common = _langData.common, ui = _langData.ui;
@@ -27258,7 +28171,7 @@
                 image_width: properties.image_width,
                 layer_delete: layers.del,
                 layer_down: layers.move_down,
-                layer_new: layers['new'],
+                layer_new: layers.new,
                 layer_rename: layers.rename,
                 layer_moreopts: common.more_opts,
                 layer_up: layers.move_up,
@@ -27392,7 +28305,8 @@
                   }
                 }
 
-                console.log('Lang: ' + langParam); // Set to English if language is not in list of good langs
+                console.log('Lang: ' + langParam); // eslint-disable-line no-console
+                // Set to English if language is not in list of good langs
 
                 if (!goodLangs.includes(langParam) && langParam !== 'test') {
                   langParam = 'en';
@@ -27560,8 +28474,8 @@
   */
 
   var editor = {};
-  var $$b = [jqPluginJSHotkeys, jqPluginBBQ, jqPluginSVGIcons, jqPluginJGraduate, jqPluginSpinBtn, jqPluginSVG, jQueryContextMenu, jPicker].reduce(function ($, cb) {
-    return cb($);
+  var $$b = [jQueryPluginJSHotkeys, jQueryPluginBBQ, jQueryPluginSVGIcons, jQueryPluginJGraduate, jQueryPluginSpinButton, jQueryPluginSVG, jQueryContextMenu, jPicker].reduce(function (jq, func) {
+    return func(jq);
   }, jQuery);
   /*
   if (!$.loadingStylesheets) {
@@ -27849,107 +28763,136 @@
     */
     allowedOrigins: []
   };
+  /**
+   *
+   * @param {string} str SVG string
+   * @param {PlainObject} [opts={}]
+   * @param {boolean} [opts.noAlert]
+   * @throws {Error} Upon failure to load SVG
+   * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is
+   *   falsey, though only until after the `alert` is closed); rejects if SVG
+   *   loading fails and `noAlert` is truthy.
+   */
 
-  function loadSvgString(str, callback) {
-    var success = svgCanvas.setSvgString(str) !== false;
-    callback = callback || $$b.noop;
-
-    if (success) {
-      callback(true); // eslint-disable-line standard/no-callback-literal
-    } else {
-      $$b.alert(uiStrings$1.notification.errorLoadingSVG, function () {
-        callback(false); // eslint-disable-line standard/no-callback-literal
-      });
-    }
+  function loadSvgString(_x) {
+    return _loadSvgString.apply(this, arguments);
   }
   /**
    * @function module:SVGEditor~getImportLocale
-   * @param {string} defaultLang
-   * @param {string} defaultName
+   * @param {PlainObject} defaults
+   * @param {string} defaults.defaultLang
+   * @param {string} defaults.defaultName
    * @returns {module:SVGEditor~ImportLocale}
    */
 
 
+  function _loadSvgString() {
+    _loadSvgString = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee23(str) {
+      var _ref45,
+          noAlert,
+          success,
+          _args23 = arguments;
+
+      return regeneratorRuntime.wrap(function _callee23$(_context23) {
+        while (1) {
+          switch (_context23.prev = _context23.next) {
+            case 0:
+              _ref45 = _args23.length > 1 && _args23[1] !== undefined ? _args23[1] : {}, noAlert = _ref45.noAlert;
+              success = svgCanvas.setSvgString(str) !== false;
+
+              if (!success) {
+                _context23.next = 4;
+                break;
+              }
+
+              return _context23.abrupt("return");
+
+            case 4:
+              if (noAlert) {
+                _context23.next = 8;
+                break;
+              }
+
+              _context23.next = 7;
+              return $$b.alert(uiStrings$1.notification.errorLoadingSVG);
+
+            case 7:
+              return _context23.abrupt("return");
+
+            case 8:
+              throw new Error('Error loading SVG');
+
+            case 9:
+            case "end":
+              return _context23.stop();
+          }
+        }
+      }, _callee23, this);
+    }));
+    return _loadSvgString.apply(this, arguments);
+  }
+
   function getImportLocale(_ref) {
     var defaultLang = _ref.defaultLang,
         defaultName = _ref.defaultName;
 
     /**
      * @function module:SVGEditor~ImportLocale
-     * @param {string} [name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
-     * @param {string} [lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
+     * @param {PlainObject} localeInfo
+     * @param {string} [localeInfo.name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
+     * @param {string} [localeInfo.lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
      * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}
      */
     return (
       /*#__PURE__*/
       function () {
-        var _importLocale = _asyncToGenerator(
+        var _importLocaleDefaulting = _asyncToGenerator(
         /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee2() {
+        regeneratorRuntime.mark(function _callee() {
           var _ref2,
               _ref2$name,
               name,
               _ref2$lang,
               lang,
               importLocale,
-              _importLocale2,
-              _args2 = arguments;
+              _args = arguments;
 
-          return regeneratorRuntime.wrap(function _callee2$(_context2) {
+          return regeneratorRuntime.wrap(function _callee$(_context) {
             while (1) {
-              switch (_context2.prev = _context2.next) {
+              switch (_context.prev = _context.next) {
                 case 0:
-                  _importLocale2 = function _ref4() {
-                    _importLocale2 = _asyncToGenerator(
-                    /*#__PURE__*/
-                    regeneratorRuntime.mark(function _callee(lang) {
-                      var url;
-                      return regeneratorRuntime.wrap(function _callee$(_context) {
-                        while (1) {
-                          switch (_context.prev = _context.next) {
-                            case 0:
-                              url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(lang, ".js");
-                              return _context.abrupt("return", importSetGlobalDefault(url, {
-                                global: "svgEditorExtensionLocale_".concat(name, "_").concat(lang)
-                              }));
-
-                            case 2:
-                            case "end":
-                              return _context.stop();
-                          }
-                        }
-                      }, _callee, this);
-                    }));
-                    return _importLocale2.apply(this, arguments);
+                  importLocale = function _ref3(language) {
+                    var url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(language, ".js");
+                    return importSetGlobalDefault(url, {
+                      global: "svgEditorExtensionLocale_".concat(name, "_").concat(language)
+                    });
                   };
 
-                  importLocale = function _ref3(_x) {
-                    return _importLocale2.apply(this, arguments);
-                  };
-
-                  _ref2 = _args2.length > 0 && _args2[0] !== undefined ? _args2[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
-                  _context2.prev = 3;
-                  _context2.next = 6;
+                  _ref2 = _args.length > 0 && _args[0] !== undefined ? _args[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
+                  _context.prev = 2;
+                  _context.next = 5;
                   return importLocale(lang);
 
-                case 6:
-                  return _context2.abrupt("return", _context2.sent);
+                case 5:
+                  return _context.abrupt("return", _context.sent);
 
-                case 9:
-                  _context2.prev = 9;
-                  _context2.t0 = _context2["catch"](3);
-                  return _context2.abrupt("return", importLocale('en'));
+                case 8:
+                  _context.prev = 8;
+                  _context.t0 = _context["catch"](2);
+                  return _context.abrupt("return", importLocale('en'));
 
-                case 12:
+                case 11:
                 case "end":
-                  return _context2.stop();
+                  return _context.stop();
               }
             }
-          }, _callee2, this, [[3, 9]]);
+          }, _callee, this, [[2, 8]]);
         }));
 
-        return function importLocale() {
-          return _importLocale.apply(this, arguments);
+        return function importLocaleDefaulting() {
+          return _importLocaleDefaulting.apply(this, arguments);
         };
       }()
     );
@@ -27962,7 +28905,7 @@
   * Store and retrieve preferences.
   * @param {string} key The preference name to be retrieved or set
   * @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.
-  * @returns {string} If val is missing or falsey, the value of the previously stored preference will be returned.
+  * @returns {string|undefined} If val is missing or falsey, the value of the previously stored preference will be returned.
   * @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?
   * @todo Review whether any remaining existing direct references to
   *  getting `curPrefs` can be changed to use `$.pref()` getting to ensure
@@ -27983,7 +28926,7 @@
 
       editor.curPrefs = curPrefs; // Update exported value
 
-      return;
+      return undefined;
     }
 
     return key in curPrefs ? curPrefs[key] : defaultPrefs[key];
@@ -28013,13 +28956,13 @@
   */
 
   editor.loadContentAndPrefs = function () {
-    if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/))) {
+    if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/))) {
       return;
     } // LOAD CONTENT
 
 
     if (editor.storage && ( // Cookies do not have enough available memory to hold large documents
-    curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)store=prefsAndContent/))) {
+    curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)svgeditstorestore=prefsAndContent/))) {
       var name = 'svgedit-' + curConfig.canvasName;
       var cached = editor.storage.getItem(name);
 
@@ -28029,25 +28972,22 @@
     } // LOAD PREFS
 
 
-    for (var key in defaultPrefs) {
-      if (defaultPrefs.hasOwnProperty(key)) {
-        // It's our own config, so we don't need to iterate up the prototype chain
-        var storeKey = 'svg-edit-' + key;
+    Object.keys(defaultPrefs).forEach(function (key) {
+      var storeKey = 'svg-edit-' + key;
 
-        if (editor.storage) {
-          var val = editor.storage.getItem(storeKey);
+      if (editor.storage) {
+        var val = editor.storage.getItem(storeKey);
 
-          if (val) {
-            defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
-          }
-        } else if (window.widget) {
-          defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
-        } else {
-          var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
-          defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
+        if (val) {
+          defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
         }
+      } else if (window.widget) {
+        defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
+      } else {
+        var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
+        defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
       }
-    }
+    });
   };
   /**
   * Allows setting of preferences or configuration (including extensions).
@@ -28073,6 +29013,13 @@
 
   editor.setConfig = function (opts, cfgCfg) {
     cfgCfg = cfgCfg || {};
+    /**
+     *
+     * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj
+     * @param {string} key
+     * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}
+     * @returns {undefined}
+     */
 
     function extendOrAdd(cfgObj, key, val) {
       if (cfgObj[key] && _typeof(cfgObj[key]) === 'object') {
@@ -28083,10 +29030,10 @@
     }
 
     $$b.each(opts, function (key, val) {
-      if (opts.hasOwnProperty(key)) {
+      if ({}.hasOwnProperty.call(opts, key)) {
         // Only allow prefs defined in defaultPrefs
-        if (defaultPrefs.hasOwnProperty(key)) {
-          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curPrefs.hasOwnProperty(key))) {
+        if ({}.hasOwnProperty.call(defaultPrefs, key)) {
+          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curPrefs, key))) {
             return;
           }
 
@@ -28102,29 +29049,25 @@
 
           curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later
           // Only allow other curConfig if defined in defaultConfig
-        } else if (defaultConfig.hasOwnProperty(key)) {
-          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curConfig.hasOwnProperty(key))) {
+        } else if ({}.hasOwnProperty.call(defaultConfig, key)) {
+          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curConfig, key))) {
             return;
           } // Potentially overwriting of previously set config
 
 
-          if (curConfig.hasOwnProperty(key)) {
+          if ({}.hasOwnProperty.call(curConfig, key)) {
             if (cfgCfg.overwrite === false) {
               return;
             }
 
             extendOrAdd(curConfig, key, val);
+          } else if (cfgCfg.allowInitialUserOverride === true) {
+            extendOrAdd(defaultConfig, key, val);
+          } else if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
+            curConfig[key] = {};
+            $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
           } else {
-            if (cfgCfg.allowInitialUserOverride === true) {
-              extendOrAdd(defaultConfig, key, val);
-            } else {
-              if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
-                curConfig[key] = {};
-                $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
-              } else {
-                curConfig[key] = val;
-              }
-            }
+            curConfig[key] = val;
           }
         }
       }
@@ -28272,6 +29215,10 @@
     $$b('#lang_select option').each(function () {
       goodLangs.push(this.value);
     });
+    /**
+     * Sets up current preferences based on defaults.
+     * @returns {undefined}
+     */
 
     function setupCurPrefs() {
       curPrefs = $$b.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set
@@ -28279,6 +29226,11 @@
 
       editor.curPrefs = curPrefs;
     }
+    /**
+     * Sets up current config based on defaults.
+     * @returns {undefined}
+     */
+
 
     function setupCurConfig() {
       curConfig = $$b.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set
@@ -28383,7 +29335,9 @@
       var icon = typeof iconId === 'string' ? $$b.getSvgIcon(iconId, true) : iconId.clone();
 
       if (!icon) {
-        console.log('NOTE: Icon image missing: ' + iconId);
+        // Todo: Investigate why this still occurs in some cases
+        console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console
+
         return;
       }
 
@@ -28401,48 +29355,53 @@
     var extAndLocaleFunc =
     /*#__PURE__*/
     function () {
-      var _ref5 = _asyncToGenerator(
+      var _ref4 = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee4() {
-        var _ref6, langParam, langData;
+      regeneratorRuntime.mark(function _callee3() {
+        var _ref5, langParam, langData, _uiStrings$common, ok, cancel;
 
-        return regeneratorRuntime.wrap(function _callee4$(_context4) {
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
           while (1) {
-            switch (_context4.prev = _context4.next) {
+            switch (_context3.prev = _context3.next) {
               case 0:
-                _context4.next = 2;
+                _context3.next = 2;
                 return editor.putLocale(null, goodLangs, curConfig);
 
               case 2:
-                _ref6 = _context4.sent;
-                langParam = _ref6.langParam;
-                langData = _ref6.langData;
-                _context4.next = 7;
+                _ref5 = _context3.sent;
+                langParam = _ref5.langParam;
+                langData = _ref5.langData;
+                _context3.next = 7;
                 return setLang(langParam, langData);
 
               case 7:
-                _context4.prev = 7;
-                _context4.next = 10;
+                _uiStrings$common = uiStrings$1.common, ok = _uiStrings$common.ok, cancel = _uiStrings$common.cancel;
+                jQueryPluginDBox($$b, {
+                  ok: ok,
+                  cancel: cancel
+                });
+                _context3.prev = 9;
+                _context3.next = 12;
                 return Promise.all(curConfig.extensions.map(
                 /*#__PURE__*/
                 function () {
-                  var _ref7 = _asyncToGenerator(
+                  var _ref6 = _asyncToGenerator(
                   /*#__PURE__*/
-                  regeneratorRuntime.mark(function _callee3(extname) {
+                  regeneratorRuntime.mark(function _callee2(extname) {
                     var extName, url, imported, _imported$name, name, init$$1, importLocale;
 
-                    return regeneratorRuntime.wrap(function _callee3$(_context3) {
+                    return regeneratorRuntime.wrap(function _callee2$(_context2) {
                       while (1) {
-                        switch (_context3.prev = _context3.next) {
+                        switch (_context2.prev = _context2.next) {
                           case 0:
                             extName = extname.match(/^ext-(.+)\.js/);
 
                             if (extName) {
-                              _context3.next = 3;
+                              _context2.next = 3;
                               break;
                             }
 
-                            return _context3.abrupt("return");
+                            return _context2.abrupt("return", undefined);
 
                           case 3:
                             url = curConfig.extPath + extname; // Todo: Replace this with `return import(url);` when
@@ -28455,41 +29414,48 @@
                              * @property {module:svgcanvas.ExtensionInitCallback} [init]
                              */
 
-                            _context3.prev = 4;
-                            _context3.next = 7;
+                            _context2.prev = 4;
+                            _context2.next = 7;
                             return importSetGlobalDefault(url, {
                               global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')
                             });
 
                           case 7:
-                            imported = _context3.sent;
+                            imported = _context2.sent;
                             _imported$name = imported.name, name = _imported$name === void 0 ? extName[1] : _imported$name, init$$1 = imported.init;
                             importLocale = getImportLocale({
                               defaultLang: langParam,
                               defaultName: name
                             });
-                            return _context3.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), importLocale));
+                            return _context2.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), {
+                              $: $$b,
+                              importLocale: importLocale
+                            }));
 
                           case 13:
-                            _context3.prev = 13;
-                            _context3.t0 = _context3["catch"](4);
-                            console.log(_context3.t0);
-                            console.error('Extension failed to load: ' + extname + '; ' + _context3.t0);
+                            _context2.prev = 13;
+                            _context2.t0 = _context2["catch"](4);
+                            // Todo: Add config to alert any errors
+                            console.log(_context2.t0); // eslint-disable-line no-console
 
-                          case 17:
+                            console.error('Extension failed to load: ' + extname + '; ' + _context2.t0); // eslint-disable-line no-console
+
+                            return _context2.abrupt("return", undefined);
+
+                          case 18:
                           case "end":
-                            return _context3.stop();
+                            return _context2.stop();
                         }
                       }
-                    }, _callee3, this, [[4, 13]]);
+                    }, _callee2, this, [[4, 13]]);
                   }));
 
                   return function (_x2) {
-                    return _ref7.apply(this, arguments);
+                    return _ref6.apply(this, arguments);
                   };
                 }()));
 
-              case 10:
+              case 12:
                 svgCanvas.bind('extensions_added',
                 /**
                 * @param {external:Window} win
@@ -28519,30 +29485,35 @@
                   });
                 });
                 svgCanvas.call('extensions_added');
-                _context4.next = 17;
+                _context3.next = 19;
                 break;
 
-              case 14:
-                _context4.prev = 14;
-                _context4.t0 = _context4["catch"](7);
-                console.log(_context4.t0);
+              case 16:
+                _context3.prev = 16;
+                _context3.t0 = _context3["catch"](9);
+                // Todo: Report errors through the UI
+                console.log(_context3.t0); // eslint-disable-line no-console
 
-              case 17:
+              case 19:
               case "end":
-                return _context4.stop();
+                return _context3.stop();
             }
           }
-        }, _callee4, this, [[7, 14]]);
+        }, _callee3, this, [[9, 16]]);
       }));
 
       return function extAndLocaleFunc() {
-        return _ref5.apply(this, arguments);
+        return _ref4.apply(this, arguments);
       };
     }();
 
     var stateObj = {
       tool_scale: editor.tool_scale
     };
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var setFlyoutPositions = function setFlyoutPositions() {
       $$b('.tools_flyout').each(function () {
@@ -28559,6 +29530,10 @@
         });
       });
     };
+    /**
+    * @type {string}
+    */
+
 
     var uaPrefix = function () {
       var regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
@@ -28583,6 +29558,12 @@
 
       return '';
     }();
+    /**
+    * @param {external:jQuery} elems
+    * @param {Float} scale
+    * @returns {undefined}
+    */
+
 
     var scaleElements = function scaleElements(elems, scale) {
       // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused
@@ -28598,8 +29579,8 @@
           var s = sides[i];
           var cur = el.data('orig_margin-' + s);
 
-          if (cur == null) {
-            cur = parseInt(el.css('margin-' + s), 10); // Cache the original margin
+          if (isNullish(cur)) {
+            cur = parseInt(el.css('margin-' + s)); // Cache the original margin
 
             el.data('orig_margin-' + s, cur);
           }
@@ -28995,95 +29976,122 @@
         '.stroke_tool div div .svg_icon': 20,
         '#tools_bottom label .svg_icon': 18
       },
-      callback: function callback(icons) {
-        $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
-          $$b(this).parent().prepend(this);
-        });
-        var tleft = $$b('#tools_left');
-        var minHeight;
+      callback: function () {
+        var _callback = _asyncToGenerator(
+        /*#__PURE__*/
+        regeneratorRuntime.mark(function _callee4(icons) {
+          var tleft, minHeight, size, getStylesheetPriority, stylesheets, idx, _stylesheets;
 
-        if (tleft.length) {
-          minHeight = tleft.offset().top + tleft.outerHeight();
-        }
+          return regeneratorRuntime.wrap(function _callee4$(_context4) {
+            while (1) {
+              switch (_context4.prev = _context4.next) {
+                case 0:
+                  getStylesheetPriority = function _ref8(stylesheetFile) {
+                    switch (stylesheetFile) {
+                      case 'jgraduate/css/jPicker.css':
+                        return 1;
 
-        var size = $$b.pref('iconsize');
-        editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+                      case 'jgraduate/css/jGraduate.css':
+                        return 2;
 
-        $$b('.tools_flyout').each(function () {
-          var shower = $$b('#' + this.id + '_show');
-          var sel = shower.attr('data-curopt'); // Check if there's an icon here
+                      case 'svg-editor.css':
+                        return 3;
 
-          if (!shower.children('svg, img').length) {
-            var clone = $$b(sel).children().clone();
+                      case 'spinbtn/jQuery.SpinButton.css':
+                        return 4;
 
-            if (clone.length) {
-              clone[0].removeAttribute('style'); // Needed for Opera
+                      default:
+                        return Infinity;
+                    }
+                  };
 
-              shower.append(clone);
+                  $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
+                    $$b(this).parent().prepend(this);
+                  });
+                  tleft = $$b('#tools_left');
+
+                  if (tleft.length) {
+                    minHeight = tleft.offset().top + tleft.outerHeight();
+                  }
+
+                  size = $$b.pref('iconsize');
+                  editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+
+                  $$b('.tools_flyout').each(function () {
+                    var shower = $$b('#' + this.id + '_show');
+                    var sel = shower.attr('data-curopt'); // Check if there's an icon here
+
+                    if (!shower.children('svg, img').length) {
+                      var clone = $$b(sel).children().clone();
+
+                      if (clone.length) {
+                        clone[0].removeAttribute('style'); // Needed for Opera
+
+                        shower.append(clone);
+                      }
+                    }
+                  });
+                  /**
+                   * Since stylesheets may be added out of order, we indicate the desired order
+                   *   for defaults and others after them (in an indeterminate order).
+                   * @param {string} stylesheetFile
+                   * @returns {Integer|PositiveInfinity}
+                   */
+
+                  stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
+                    var priorityA = getStylesheetPriority(a);
+                    var priorityB = getStylesheetPriority(b);
+
+                    if (priorityA === priorityB) {
+                      return 0;
+                    }
+
+                    return priorityA > priorityB;
+                  });
+
+                  if (curConfig.stylesheets.length) {
+                    // Ensure a copy with unique items
+                    stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
+                    idx = stylesheets.indexOf('@default');
+
+                    if (idx > -1) {
+                      (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
+                    }
+                  }
+
+                  _context4.next = 11;
+                  return loadStylesheets(stylesheets, {
+                    acceptErrors: function acceptErrors(_ref7) {
+                      var stylesheetURL = _ref7.stylesheetURL,
+                          reject = _ref7.reject,
+                          resolve = _ref7.resolve;
+
+                      if ($$b.loadingStylesheets.includes(stylesheetURL)) {
+                        reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
+                        return;
+                      }
+
+                      resolve();
+                    }
+                  });
+
+                case 11:
+                  $$b('#svg_container')[0].style.visibility = 'visible';
+                  _context4.next = 14;
+                  return editor.runCallbacks();
+
+                case 14:
+                case "end":
+                  return _context4.stop();
+              }
             }
-          }
-        });
+          }, _callee4, this);
+        }));
 
-        function getStylesheetPriority(stylesheet) {
-          switch (stylesheet) {
-            case 'jgraduate/css/jPicker.css':
-              return 1;
-
-            case 'jgraduate/css/jGraduate.css':
-              return 2;
-
-            case 'svg-editor.css':
-              return 3;
-
-            case 'spinbtn/jQuery.SpinButton.css':
-              return 4;
-
-            default:
-              return Infinity;
-          }
-        }
-
-        var stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
-          var priorityA = getStylesheetPriority(a);
-          var priorityB = getStylesheetPriority(b);
-
-          if (priorityA === priorityB) {
-            return 0;
-          }
-
-          return priorityA > priorityB;
-        });
-
-        if (curConfig.stylesheets.length) {
-          // Ensure a copy with unique items
-          stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
-          var idx = stylesheets.indexOf('@default');
-
-          if (idx > -1) {
-            var _stylesheets;
-
-            (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
-          }
-        }
-
-        loadStylesheets(stylesheets, {
-          acceptErrors: function acceptErrors(_ref8) {
-            var stylesheetURL = _ref8.stylesheetURL,
-                reject = _ref8.reject,
-                resolve = _ref8.resolve;
-
-            if ($$b.loadingStylesheets.includes(stylesheetURL)) {
-              reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
-              return;
-            }
-
-            resolve();
-          }
-        }).then(function () {
-          $$b('#svg_container')[0].style.visibility = 'visible';
-          editor.runCallbacks();
-        });
-      }
+        return function callback(_x3) {
+          return _callback.apply(this, arguments);
+        };
+      }()
     });
     /**
     * @name module:SVGEditor.canvas
@@ -29136,125 +30144,12 @@
           w.document.documentElement.dispatchEvent(svgEditorReadyEvent);
         } catch (e) {}
       }
-    })(); // This sets up alternative dialog boxes. They mostly work the same way as
-    // their UI counterparts, expect instead of returning the result, a callback
-    // needs to be included that returns the result as its first parameter.
-    // In the future we may want to add additional types of dialog boxes, since
-    // they should be easy to handle this way.
-
-
-    (function () {
-      $$b('#dialog_container').draggable({
-        cancel: '#dialog_content, #dialog_buttons *',
-        containment: 'window'
-      }).css('position', 'absolute');
-
-      var box = $$b('#dialog_box'),
-          btnHolder = $$b('#dialog_buttons'),
-          dialogContent = $$b('#dialog_content'),
-          dbox = function dbox(type, msg, callback, defaultVal, opts, changeCb, checkbox) {
-        dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
-        btnHolder.empty();
-        var ok = $$b('<input type="button" value="' + uiStrings$1.common.ok + '">').appendTo(btnHolder);
-
-        if (type !== 'alert') {
-          $$b('<input type="button" value="' + uiStrings$1.common.cancel + '">').appendTo(btnHolder).click(function () {
-            box.hide();
-
-            if (callback) {
-              callback(false); // eslint-disable-line standard/no-callback-literal
-            }
-          });
-        }
-
-        var ctrl, chkbx;
-
-        if (type === 'prompt') {
-          ctrl = $$b('<input type="text">').prependTo(btnHolder);
-          ctrl.val(defaultVal || '');
-          ctrl.bind('keydown', 'return', function () {
-            ok.click();
-          });
-        } else if (type === 'select') {
-          var div = $$b('<div style="text-align:center;">');
-          ctrl = $$b('<select>').appendTo(div);
-
-          if (checkbox) {
-            var label = $$b('<label>').text(checkbox.label);
-            chkbx = $$b('<input type="checkbox">').appendTo(label);
-            chkbx.val(checkbox.value);
-
-            if (checkbox.tooltip) {
-              label.attr('title', checkbox.tooltip);
-            }
-
-            chkbx.prop('checked', !!checkbox.checked);
-            div.append($$b('<div>').append(label));
-          }
-
-          $$b.each(opts || [], function (opt, val) {
-            if (_typeof(val) === 'object') {
-              ctrl.append($$b('<option>').val(val.value).html(val.text));
-            } else {
-              ctrl.append($$b('<option>').html(val));
-            }
-          });
-          dialogContent.append(div);
-
-          if (defaultVal) {
-            ctrl.val(defaultVal);
-          }
-
-          if (changeCb) {
-            ctrl.bind('change', 'return', changeCb);
-          }
-
-          ctrl.bind('keydown', 'return', function () {
-            ok.click();
-          });
-        } else if (type === 'process') {
-          ok.hide();
-        }
-
-        box.show();
-        ok.click(function () {
-          box.hide();
-          var resp = type === 'prompt' || type === 'select' ? ctrl.val() : true;
-
-          if (callback) {
-            if (chkbx) {
-              callback(resp, chkbx.prop('checked'));
-            } else {
-              callback(resp);
-            }
-          }
-        }).focus();
-
-        if (type === 'prompt' || type === 'select') {
-          ctrl.focus();
-        }
-      };
-
-      $$b.alert = function (msg, cb) {
-        dbox('alert', msg, cb);
-      };
-
-      $$b.confirm = function (msg, cb) {
-        dbox('confirm', msg, cb);
-      };
-
-      $$b.process_cancel = function (msg, cb) {
-        dbox('process', msg, cb);
-      };
-
-      $$b.prompt = function (msg, txt, cb) {
-        dbox('prompt', msg, cb, txt);
-      };
-
-      $$b.select = function (msg, opts, cb, changeCb, txt, checkbox) {
-        dbox('select', msg, cb, txt, opts, changeCb, checkbox);
-      };
     })();
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var setSelectMode = function setSelectMode() {
       var curr = $$b('.tool_button_current');
@@ -29280,8 +30175,13 @@
       rIntervals.push(i);
       rIntervals.push(2 * i);
       rIntervals.push(5 * i);
-    } // This function highlights the layer passed in (by fading out the other layers)
-    // if no layer is passed in, this function restores the other layers
+    }
+    /**
+     * This function highlights the layer passed in (by fading out the other layers).
+     * If no layer is passed in, this function restores the other layers
+     * @param {string} [layerNameToHighlight]
+     * @returns {undefined}
+    */
 
 
     var toggleHighlightLayer = function toggleHighlightLayer(layerNameToHighlight) {
@@ -29294,17 +30194,22 @@
       }
 
       if (layerNameToHighlight) {
-        for (i = 0; i < numLayers; ++i) {
-          if (curNames[i] !== layerNameToHighlight) {
-            svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);
+        curNames.forEach(function (curName) {
+          if (curName !== layerNameToHighlight) {
+            svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);
           }
-        }
+        });
       } else {
-        for (i = 0; i < numLayers; ++i) {
-          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);
-        }
+        curNames.forEach(function (curName) {
+          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);
+        });
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var populateLayers = function populateLayers() {
       svgCanvas.clearSelection();
@@ -29361,6 +30266,11 @@
 
     var editingsource = false;
     var origSource = '';
+    /**
+    * @param {Event} [e] Not used.
+    * @param {boolean} forSaving
+    * @returns {undefined}
+    */
 
     var showSourceEditor = function showSourceEditor(e, forSaving) {
       if (editingsource) {
@@ -29369,7 +30279,7 @@
 
       editingsource = true;
       origSource = svgCanvas.getSvgString();
-      $$b('#save_output_btns').toggle(!!forSaving);
+      $$b('#save_output_btns').toggle(Boolean(forSaving));
       $$b('#tool_source_back').toggle(!forSaving);
       $$b('#svg_source_textarea').val(origSource);
       $$b('#svg_source_editor').fadeIn();
@@ -29378,6 +30288,11 @@
 
     var selectedElement = null;
     var multiselected = false;
+    /**
+    * @param {boolean} editmode
+    * @param {module:svgcanvas.SvgCanvas#event:selected} elems
+    * @returns {undefined}
+    */
 
     var togglePathEditMode = function togglePathEditMode(editmode, elems) {
       $$b('#path_node_panel').toggle(editmode);
@@ -29450,7 +30365,7 @@
         }
 
         if (done !== 'part') {
-          alert(note);
+          $$b.alert(note);
         }
       }
     };
@@ -29468,6 +30383,7 @@
       exportWindow = window.open(blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one
 
       if (!exportWindow || exportWindow.closed) {
+        /* await */
         $$b.alert(uiStrings$1.notification.popupWindowBlocked);
         return;
       }
@@ -29489,6 +30405,11 @@
         exportWindow.alert(note);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var operaRepaint = function operaRepaint() {
       // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
@@ -29498,12 +30419,21 @@
 
       $$b('<p/>').hide().appendTo('body').remove();
     };
+    /**
+     *
+     * @param {Element} opt
+     * @param {boolean} changeElem
+     * @returns {undefined}
+     */
+
 
     function setStrokeOpt(opt, changeElem) {
       var id = opt.id;
       var bits = id.split('_');
-      var pre = bits[0];
-      var val = bits[1];
+
+      var _bits = _slicedToArray(bits, 2),
+          pre = _bits[0],
+          val = _bits[1];
 
       if (changeElem) {
         svgCanvas.setStrokeAttr('stroke-' + pre, val);
@@ -29592,6 +30522,13 @@
         $$b('#change_image_url').hide();
       }
     };
+    /**
+     *
+     * @param {string} color
+     * @param {string} url
+     * @returns {undefined}
+     */
+
 
     function setBackground(color, url) {
       // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }
@@ -29600,27 +30537,73 @@
 
       svgCanvas.setBackground(color, url);
     }
+    /**
+     * @param {PlainObject} [opts={}]
+     * @param {boolean} [opts.cancelDeletes=false}]
+     * @returns {Promise} Resolves to `undefined`
+     */
+
 
     function promptImgURL() {
-      var _ref9 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
-          _ref9$cancelDeletes = _ref9.cancelDeletes,
-          cancelDeletes = _ref9$cancelDeletes === void 0 ? false : _ref9$cancelDeletes;
+      return _promptImgURL.apply(this, arguments);
+    }
+    /**
+    * @param {Element} elem
+    * @returns {undefined}
+    */
 
-      var curhref = svgCanvas.getHref(selectedElement);
-      curhref = curhref.startsWith('data:') ? '' : curhref;
-      $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref, function (url) {
-        if (url) {
-          setImageURL(url);
-        } else if (cancelDeletes) {
-          svgCanvas.deleteSelectedElements();
-        }
-      });
+
+    function _promptImgURL() {
+      _promptImgURL = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee18() {
+        var _ref31,
+            _ref31$cancelDeletes,
+            cancelDeletes,
+            curhref,
+            url,
+            _args18 = arguments;
+
+        return regeneratorRuntime.wrap(function _callee18$(_context18) {
+          while (1) {
+            switch (_context18.prev = _context18.next) {
+              case 0:
+                _ref31 = _args18.length > 0 && _args18[0] !== undefined ? _args18[0] : {}, _ref31$cancelDeletes = _ref31.cancelDeletes, cancelDeletes = _ref31$cancelDeletes === void 0 ? false : _ref31$cancelDeletes;
+                curhref = svgCanvas.getHref(selectedElement);
+                curhref = curhref.startsWith('data:') ? '' : curhref;
+                _context18.next = 5;
+                return $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref);
+
+              case 5:
+                url = _context18.sent;
+
+                if (url) {
+                  setImageURL(url);
+                } else if (cancelDeletes) {
+                  svgCanvas.deleteSelectedElements();
+                }
+
+              case 7:
+              case "end":
+                return _context18.stop();
+            }
+          }
+        }, _callee18, this);
+      }));
+      return _promptImgURL.apply(this, arguments);
     }
 
     var setInputWidth = function setInputWidth(elem) {
       var w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
       $$b(elem).width(w);
     };
+    /**
+     *
+     * @param {HTMLDivElement} [scanvas]
+     * @param {Float} [zoom]
+     * @returns {undefined}
+     */
+
 
     function updateRulers(scanvas, zoom) {
       if (!zoom) {
@@ -29662,7 +30645,7 @@
         $hcanv.siblings().remove(); // Create multiple canvases when necessary (due to browser limits)
 
         if (rulerLen >= limit) {
-          ctxArrNum = parseInt(rulerLen / limit, 10) + 1;
+          ctxArrNum = parseInt(rulerLen / limit) + 1;
           ctxArr = [];
           ctxArr[0] = ctx;
           var copy = void 0;
@@ -29816,8 +30799,9 @@
       var newCanX = w / 2;
       var offset = svgCanvas.updateCanvas(w, h);
       var ratio = newCanX / oldCanX;
-      var scrollX = w / 2 - wOrig / 2;
-      var scrollY = h / 2 - hOrig / 2;
+      var scrollX = w / 2 - wOrig / 2; // eslint-disable-line no-shadow
+
+      var scrollY = h / 2 - hOrig / 2; // eslint-disable-line no-shadow
 
       if (!newCtr) {
         var oldDistX = oldCtr.x - oldCanX;
@@ -29865,44 +30849,37 @@
 
 
     var updateToolButtonState = function updateToolButtonState() {
-      var index, button;
       var bNoFill = svgCanvas.getColor('fill') === 'none';
       var bNoStroke = svgCanvas.getColor('stroke') === 'none';
       var buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];
       var buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];
 
       if (bNoStroke) {
-        for (index in buttonsNeedingStroke) {
-          button = buttonsNeedingStroke[index];
-
-          if ($$b(button).hasClass('tool_button_current')) {
+        buttonsNeedingStroke.forEach(function (btn) {
+          if ($$b(btn).hasClass('tool_button_current')) {
             clickSelect();
           }
 
-          $$b(button).addClass('disabled');
-        }
+          $$b(btn).addClass('disabled');
+        });
       } else {
-        for (index in buttonsNeedingStroke) {
-          button = buttonsNeedingStroke[index];
-          $$b(button).removeClass('disabled');
-        }
+        buttonsNeedingStroke.forEach(function (btn) {
+          $$b(btn).removeClass('disabled');
+        });
       }
 
       if (bNoStroke && bNoFill) {
-        for (index in buttonsNeedingFillAndStroke) {
-          button = buttonsNeedingFillAndStroke[index];
-
-          if ($$b(button).hasClass('tool_button_current')) {
+        buttonsNeedingFillAndStroke.forEach(function (btn) {
+          if ($$b(btn).hasClass('tool_button_current')) {
             clickSelect();
           }
 
-          $$b(button).addClass('disabled');
-        }
+          $$b(btn).addClass('disabled');
+        });
       } else {
-        for (index in buttonsNeedingFillAndStroke) {
-          button = buttonsNeedingFillAndStroke[index];
-          $$b(button).removeClass('disabled');
-        }
+        buttonsNeedingFillAndStroke.forEach(function (btn) {
+          $$b(btn).removeClass('disabled');
+        });
       }
 
       svgCanvas.runExtensions('toolButtonStateUpdate',
@@ -29923,14 +30900,19 @@
         shower.toggleClass('disabled', !hasEnabled);
       });
       operaRepaint();
-    }; // Updates the toolbar (colors, opacity, etc) based on the selected element
-    // This function also updates the opacity and id elements that are in the context panel
+    };
+    /**
+    * Updates the toolbar (colors, opacity, etc) based on the selected element.
+    * This function also updates the opacity and id elements that are in the
+    * context panel.
+    * @returns {undefined}
+    */
 
 
     var updateToolbar = function updateToolbar() {
       var i, len;
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         switch (selectedElement.tagName) {
           case 'use':
           case 'image':
@@ -29939,47 +30921,50 @@
 
           case 'g':
           case 'a':
-            // Look for common styles
-            var childs = selectedElement.getElementsByTagName('*');
-            var gWidth = null;
+            {
+              // Look for common styles
+              var childs = selectedElement.getElementsByTagName('*');
+              var gWidth = null;
 
-            for (i = 0, len = childs.length; i < len; i++) {
-              var swidth = childs[i].getAttribute('stroke-width');
+              for (i = 0, len = childs.length; i < len; i++) {
+                var swidth = childs[i].getAttribute('stroke-width');
 
-              if (i === 0) {
-                gWidth = swidth;
-              } else if (gWidth !== swidth) {
-                gWidth = null;
+                if (i === 0) {
+                  gWidth = swidth;
+                } else if (gWidth !== swidth) {
+                  gWidth = null;
+                }
               }
-            }
 
-            $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
-            paintBox.fill.update(true);
-            paintBox.stroke.update(true);
-            break;
+              $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
+              paintBox.fill.update(true);
+              paintBox.stroke.update(true);
+              break;
+            }
 
           default:
-            paintBox.fill.update(true);
-            paintBox.stroke.update(true);
-            $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
-            $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
-            var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
+            {
+              paintBox.fill.update(true);
+              paintBox.stroke.update(true);
+              $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
+              $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
+              var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
 
-            if ($$b('#linejoin_' + attr).length) {
-              setStrokeOpt($$b('#linejoin_' + attr)[0]);
+              if ($$b('#linejoin_' + attr).length) {
+                setStrokeOpt($$b('#linejoin_' + attr)[0]);
+              }
+
+              attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
+
+              if ($$b('#linecap_' + attr).length) {
+                setStrokeOpt($$b('#linecap_' + attr)[0]);
+              }
             }
-
-            attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
-
-            if ($$b('#linecap_' + attr).length) {
-              setStrokeOpt($$b('#linecap_' + attr)[0]);
-            }
-
         }
       } // All elements including image and group have opacity
 
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         var opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;
         $$b('#group_opacity').val(opacPerc);
         $$b('#opac_slider').slider('option', 'value', opacPerc);
@@ -29988,13 +30973,17 @@
       }
 
       updateToolButtonState();
-    }; // updates the context panel tools based on the selected element
+    };
+    /**
+    * Updates the context panel tools based on the selected element.
+    * @returns {undefined}
+    */
 
 
     var updateContextPanel = function updateContextPanel() {
       var elem = selectedElement; // If element has just been deleted, consider it null
 
-      if (elem != null && !elem.parentNode) {
+      if (!isNullish(elem) && !elem.parentNode) {
         elem = null;
       }
 
@@ -30006,7 +30995,7 @@
       var menuItems = $$b('#cmenu_canvas li');
       $$b('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' + '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' + ' #use_panel, #a_panel').hide();
 
-      if (elem != null) {
+      if (!isNullish(elem)) {
         var elname = elem.nodeName; // If this is a link with no transform and one child, pretend
         // its child is selected
         // if (elname === 'a') { // && !$(elem).attr('transform')) {
@@ -30023,6 +31012,7 @@
           if (elname === 'image' && svgCanvas.getMode() === 'image') {
             // Prompt for URL if not a data URL
             if (!svgCanvas.getHref(elem).startsWith('data:')) {
+              /* await */
               promptImgURL({
                 cancelDeletes: true
               });
@@ -30189,7 +31179,7 @@
         }
 
         menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');
-        menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (elem != null)
+        menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (!Utils.isNullish(elem))
       } else if (multiselected) {
         $$b('#multiselected_panel').show();
         menuItems.enableContextMenuItems('#group').disableContextMenuItems('#ungroup');
@@ -30211,6 +31201,11 @@
         $$b('#selLayerNames').attr('disabled', 'disabled');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var updateWireFrame = function updateWireFrame() {
       // Test support
@@ -30223,6 +31218,10 @@
     };
 
     var curContext = '';
+    /**
+    * @param {string} [title=svgCanvas.getDocumentTitle()]
+    * @returns {undefined}
+    */
 
     var updateTitle = function updateTitle(title) {
       title = title || svgCanvas.getDocumentTitle();
@@ -30253,17 +31252,17 @@
 
       var isNode = mode === 'pathedit'; // if elems[1] is present, then we have more than one element
 
-      selectedElement = elems.length === 1 || elems[1] == null ? elems[0] : null;
-      multiselected = elems.length >= 2 && elems[1] != null;
+      selectedElement = elems.length === 1 || isNullish(elems[1]) ? elems[0] : null;
+      multiselected = elems.length >= 2 && !isNullish(elems[1]);
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         // unless we're already in always set the mode of the editor to select because
         // upon creation of a text element the editor is switched into
         // select mode and this event fires - we need our UI to be in sync
         if (!isNode) {
           updateToolbar();
         }
-      } // if (elem != null)
+      } // if (!Utils.isNullish(elem))
       // Deal with pathedit mode
 
 
@@ -30296,19 +31295,21 @@
         return;
       }
 
-      multiselected = elems.length >= 2 && elems[1] != null; // Only updating fields for single elements for now
+      multiselected = elems.length >= 2 && !isNullish(elems[1]); // Only updating fields for single elements for now
 
       if (!multiselected) {
         switch (mode) {
           case 'rotate':
-            var ang = svgCanvas.getRotationAngle(elem);
-            $$b('#angle').val(ang);
-            $$b('#tool_reorient').toggleClass('disabled', ang === 0);
-            break;
-          // TODO: Update values that change on move/resize, etc
-          // case 'select':
-          // case 'resize':
-          //   break;
+            {
+              var ang = svgCanvas.getRotationAngle(elem);
+              $$b('#angle').val(ang);
+              $$b('#tool_reorient').toggleClass('disabled', ang === 0);
+              break; // TODO: Update values that change on move/resize, etc
+              // } case 'select': {
+              // } case 'resize': {
+              //   break;
+              // }
+            }
         }
       }
 
@@ -30357,7 +31358,7 @@
           } // Update selectedElement if element is no longer part of the image.
           // This occurs for the text elements in Firefox
 
-        } else if (elem && selectedElement && selectedElement.parentNode == null) {
+        } else if (elem && selectedElement && isNullish(selectedElement.parentNode)) {
           // || elem && elem.tagName == "path" && !multiselected) { // This was added in r1430, but not sure why
           selectedElement = elem;
         }
@@ -30451,6 +31452,10 @@
 
       zoomDone();
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeZoom = function changeZoom(ctl) {
       var zoomlevel = ctl.value / 100;
@@ -30513,9 +31518,13 @@
         curContext = null;
       }
 
-      $$b('#cur_context_panel').toggle(!!context).html(linkStr);
+      $$b('#cur_context_panel').toggle(Boolean(context)).html(linkStr);
       updateTitle();
-    }; // Makes sure the current selected paint is available to work with
+    };
+    /**
+    * Makes sure the current selected paint is available to work with.
+    * @returns {undefined}
+    */
 
 
     var prepPaints = function prepPaints() {
@@ -30524,6 +31533,10 @@
     };
 
     var flyoutFuncs = {};
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var setFlyoutTitles = function setFlyoutTitles() {
       $$b('.tools_flyout').each(function () {
@@ -30542,7 +31555,7 @@
 
     var allHolders = {};
     /**
-     * @param {GenericObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
+     * @param {PlainObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
      * @returns {undefined}
      */
 
@@ -30565,10 +31578,10 @@
           // Get this button's options
           var idSel = '#' + this.getAttribute('id');
 
-          var _Object$entries$find = Object.entries(btnOpts).find(function (_ref10) {
-            var _ref11 = _slicedToArray(_ref10, 2),
-                i = _ref11[0],
-                sel = _ref11[1].sel;
+          var _Object$entries$find = Object.entries(btnOpts).find(function (_ref9) {
+            var _ref10 = _slicedToArray(_ref9, 2),
+                _ = _ref10[0],
+                sel = _ref10[1].sel;
 
             return sel === idSel;
           }),
@@ -30595,22 +31608,22 @@
             if (ev.type === 'keydown') {
               var flyoutIsSelected = $$b(options.parent + '_show').hasClass('tool_button_current');
               var currentOperation = $$b(options.parent + '_show').attr('data-curopt');
-              Object.entries(holders[opts.parent]).some(function (_ref12) {
-                var _ref13 = _slicedToArray(_ref12, 2),
-                    i = _ref13[0],
-                    tool = _ref13[1];
+              Object.entries(holders[opts.parent]).some(function (_ref11) {
+                var _ref12 = _slicedToArray(_ref11, 2),
+                    j = _ref12[0],
+                    tool = _ref12[1];
 
                 if (tool.sel !== currentOperation) {
-                  return;
+                  return false;
                 }
 
                 if (!ev.shiftKey || !flyoutIsSelected) {
                   options = tool;
                 } else {
                   // If flyout is selected, allow shift key to iterate through subitems
-                  i = parseInt(i, 10); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
+                  j = parseInt(j); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
 
-                  options = allHolders[opts.parent][i + 1] || holders[opts.parent][0];
+                  options = allHolders[opts.parent][j + 1] || holders[opts.parent][0];
                 }
 
                 return true;
@@ -30637,6 +31650,8 @@
             icon[0].setAttribute('height', shower.height());
             shower.children(':not(.flyout_arrow_horiz)').remove();
             shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode
+
+            return true;
           };
 
           $$b(this).mouseup(flyoutAction);
@@ -30644,6 +31659,8 @@
           if (opts.key) {
             $$b(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);
           }
+
+          return true;
         });
 
         if (def) {
@@ -30678,6 +31695,7 @@
             holder.data('shown_popop', true);
           }, time);
           evt.preventDefault();
+          return true;
         }).mouseup(function (evt) {
           clearTimeout(timer);
           var opt = $$b(this).attr('data-curopt'); // Is library and popped up, so do nothing
@@ -30695,6 +31713,12 @@
       setFlyoutTitles();
       setFlyoutPositions();
     };
+    /**
+    * @param {string} id
+    * @param {external:jQuery} child
+    * @returns {undefined}
+    */
+
 
     var makeFlyoutHolder = function makeFlyoutHolder(id, child) {
       var div = $$b('<div>', {
@@ -30702,16 +31726,27 @@
         id: id
       }).appendTo('#svg_editor').append(child);
       return div;
-    }; // TODO: Combine this with addDropDown or find other way to optimize
+    };
+    /**
+    * @param {string} elemSel
+    * @param {string} listSel
+    * @param {external:jQuery.Function} callback
+    * @param {PlainObject} opts
+    * @param {boolean} opts.dropUp
+    * @param {boolean} opts.seticon
+    * @param {boolean} opts.multiclick
+    * @todo Combine this with `addDropDown` or find other way to optimize.
+    * @returns {undefined}
+    */
 
 
-    var addAltDropDown = function addAltDropDown(elem, list, callback, opts) {
-      var button = $$b(elem);
+    var addAltDropDown = function addAltDropDown(elemSel, listSel, callback, opts) {
+      var button = $$b(elemSel);
       var dropUp = opts.dropUp;
-      list = $$b(list);
+      var list = $$b(listSel);
 
       if (dropUp) {
-        $$b(elem).addClass('dropup');
+        $$b(elemSel).addClass('dropup');
       }
 
       list.find('li').bind('mouseup', function () {
@@ -30720,7 +31755,11 @@
           $$b(this).addClass('current').siblings().removeClass('current');
         }
 
-        callback.apply(this, arguments);
+        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+          args[_key] = arguments[_key];
+        }
+
+        callback.apply.apply(callback, [this].concat(args));
       });
       var onButton = false;
       $$b(window).mouseup(function (evt) {
@@ -30779,13 +31818,13 @@
      * @param {external:Window} win
      * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext
      * @listens module:svgcanvas.SvgCanvas#event:extension_added
-     * @returns {Promise} Resolves to `undefined`
+     * @returns {Promise|undefined} Resolves to `undefined`
      */
 
     var extAdded =
     /*#__PURE__*/
     function () {
-      var _ref14 = _asyncToGenerator(
+      var _ref13 = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee5(win, ext) {
         var cbCalled, resizeDone, lang, prepResize, runCallback, btnSelects, svgicons, fallbackObj, placementObj, holders;
@@ -30793,7 +31832,7 @@
           while (1) {
             switch (_context5.prev = _context5.next) {
               case 0:
-                prepResize = function _ref15() {
+                prepResize = function _ref14() {
                   if (resizeTimer) {
                     clearTimeout(resizeTimer);
                     resizeTimer = null;
@@ -30812,7 +31851,7 @@
                   break;
                 }
 
-                return _context5.abrupt("return");
+                return _context5.abrupt("return", undefined);
 
               case 3:
                 cbCalled = false;
@@ -30849,6 +31888,10 @@
                 extsPreLang.push(ext);
 
               case 14:
+                /**
+                *
+                * @returns {undefined}
+                */
                 runCallback = function runCallback() {
                   if (ext.callback && !cbCalled) {
                     cbCalled = true;
@@ -30889,70 +31932,78 @@
 
                     switch (tool.type) {
                       case 'tool_button':
-                        html = '<div class="tool_button">' + tool.id + '</div>';
-                        var div = $$b(html).appendTo(panel);
+                        {
+                          html = '<div class="tool_button">' + tool.id + '</div>';
+                          var div = $$b(html).appendTo(panel);
 
-                        if (tool.events) {
-                          $$b.each(tool.events, function (evt, func) {
-                            $$b(div).bind(evt, func);
-                          });
+                          if (tool.events) {
+                            $$b.each(tool.events, function (evt, func) {
+                              $$b(div).bind(evt, func);
+                            });
+                          }
+
+                          break;
                         }
 
-                        break;
-
                       case 'select':
-                        html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
-                        $$b.each(tool.options, function (val, text) {
-                          var sel = val === tool.defval ? ' selected' : '';
-                          html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
-                        });
-                        html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
+                        {
+                          html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
+                          $$b.each(tool.options, function (val, text) {
+                            var sel = val === tool.defval ? ' selected' : '';
+                            html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
+                          });
+                          html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
 
-                        var sel = $$b(html).appendTo(panel).find('select');
-                        $$b.each(tool.events, function (evt, func) {
-                          $$b(sel).bind(evt, func);
-                        });
-                        break;
+                          var sel = $$b(html).appendTo(panel).find('select');
+                          $$b.each(tool.events, function (evt, func) {
+                            $$b(sel).bind(evt, func);
+                          });
+                          break;
+                        }
 
                       case 'button-select':
-                        html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
-                        var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
+                        {
+                          html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
+                          var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
 
-                        if (tool.colnum) {
-                          list.addClass('optcols' + tool.colnum);
-                        } // Creates the tool, hides & adds it, returns the select element
+                          if (tool.colnum) {
+                            list.addClass('optcols' + tool.colnum);
+                          } // Creates the tool, hides & adds it, returns the select element
 
-                        /* const dropdown = */
+                          /* const dropdown = */
 
 
-                        $$b(html).appendTo(panel).children();
-                        btnSelects.push({
-                          elem: '#' + tool.id,
-                          list: '#' + tool.id + '_opts',
-                          title: tool.title,
-                          callback: tool.events.change,
-                          cur: '#cur_' + tool.id
-                        });
-                        break;
+                          $$b(html).appendTo(panel).children();
+                          btnSelects.push({
+                            elem: '#' + tool.id,
+                            list: '#' + tool.id + '_opts',
+                            title: tool.title,
+                            callback: tool.events.change,
+                            cur: '#cur_' + tool.id
+                          });
+                          break;
+                        }
 
                       case 'input':
-                        html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
-                        // Add to given tool.panel
+                        {
+                          html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
+                          // Add to given tool.panel
 
-                        var inp = $$b(html).appendTo(panel).find('input');
+                          var inp = $$b(html).appendTo(panel).find('input');
 
-                        if (tool.spindata) {
-                          inp.SpinButton(tool.spindata);
+                          if (tool.spindata) {
+                            inp.SpinButton(tool.spindata);
+                          }
+
+                          if (tool.events) {
+                            $$b.each(tool.events, function (evt, func) {
+                              inp.bind(evt, func);
+                            });
+                          }
+
+                          break;
                         }
 
-                        if (tool.events) {
-                          $$b.each(tool.events, function (evt, func) {
-                            inp.bind(evt, func);
-                          });
-                        }
-
-                        break;
-
                       default:
                         break;
                     }
@@ -31225,6 +32276,7 @@
                 }
 
                 return _context5.abrupt("return", new Promise(function (resolve, reject) {
+                  // eslint-disable-line promise/avoid-new
                   $$b.svgIcons(svgicons, {
                     w: 24,
                     h: 24,
@@ -31256,10 +32308,17 @@
         }, _callee5, this);
       }));
 
-      return function extAdded(_x3, _x4) {
-        return _ref14.apply(this, arguments);
+      return function extAdded(_x4, _x5) {
+        return _ref13.apply(this, arguments);
       };
     }();
+    /**
+    * @param {string} color
+    * @param {Float} opac
+    * @param {string} type
+    * @returns {module:jGraduate~Paint}
+    */
+
 
     var getPaint = function getPaint(color, opac, type) {
       // update the editor's fill paint
@@ -31307,6 +32366,7 @@
       }
 
       if (!exportWindow || exportWindow.closed) {
+        /* await */
         $$b.alert(uiStrings$1.notification.popupWindowBlocked);
         return;
       }
@@ -31318,14 +32378,15 @@
     svgCanvas.bind('updateCanvas',
     /**
      * @param {external:Window} win
-     * @param {false} center
-     * @param {module:math.XYObject} newCtr
+     * @param {PlainObject} centerInfo
+     * @param {false} centerInfo.center
+     * @param {module:math.XYObject} centerInfo.newCtr
      * @listens module:svgcanvas.SvgCanvas#event:updateCanvas
      * @returns {undefined}
      */
-    function (win, _ref16) {
-      var center = _ref16.center,
-          newCtr = _ref16.newCtr;
+    function (win, _ref15) {
+      var center = _ref15.center,
+          newCtr = _ref15.newCtr;
       updateCanvas(center, newCtr);
     });
     svgCanvas.bind('contextset', contextChanged);
@@ -31356,14 +32417,25 @@
     });
     setBackground($$b.pref('bkgd_color'), $$b.pref('bkgd_url'));
     $$b('#image_save_opts input').val([$$b.pref('img_save')]);
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
 
     var changeRectRadius = function changeRectRadius(ctl) {
       svgCanvas.setRectRadius(ctl.value);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeFontSize = function changeFontSize(ctl) {
       svgCanvas.setFontSize(ctl.value);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeStrokeWidth = function changeStrokeWidth(ctl) {
       var val = ctl.value;
@@ -31374,14 +32446,24 @@
 
       svgCanvas.setStrokeWidth(val);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeRotationAngle = function changeRotationAngle(ctl) {
       svgCanvas.setRotationAngle(ctl.value);
-      $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value, 10) === 0);
+      $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);
     };
+    /**
+    * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+    * @param {string} [val=ctl.value]
+    * @returns {undefined}
+    */
+
 
     var changeOpacity = function changeOpacity(ctl, val) {
-      if (val == null) {
+      if (isNullish(val)) {
         val = ctl.value;
       }
 
@@ -31393,9 +32475,16 @@
 
       svgCanvas.setOpacity(val / 100);
     };
+    /**
+    * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+    * @param {string} [val=ctl.value]
+    * @param {boolean} noUndo
+    * @returns {undefined}
+    */
+
 
     var changeBlur = function changeBlur(ctl, val, noUndo) {
-      if (val == null) {
+      if (isNullish(val)) {
         val = ctl.value;
       }
 
@@ -31428,29 +32517,72 @@
     }); // fired when user wants to move elements to another layer
 
     var promptMoveLayerOnce = false;
-    $$b('#selLayerNames').change(function () {
-      var destLayer = this.options[this.selectedIndex].value;
-      var confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+    $$b('#selLayerNames').change(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee6() {
+      var destLayer, confirmStr, moveToLayer, ok;
+      return regeneratorRuntime.wrap(function _callee6$(_context6) {
+        while (1) {
+          switch (_context6.prev = _context6.next) {
+            case 0:
+              destLayer = this.options[this.selectedIndex].value;
+              confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+              /**
+              * @param {boolean} ok
+              * @returns {undefined}
+              */
 
-      var moveToLayer = function moveToLayer(ok) {
-        if (!ok) {
-          return;
+              moveToLayer = function moveToLayer(ok) {
+                if (!ok) {
+                  return;
+                }
+
+                promptMoveLayerOnce = true;
+                svgCanvas.moveSelectedToLayer(destLayer);
+                svgCanvas.clearSelection();
+                populateLayers();
+              };
+
+              if (!destLayer) {
+                _context6.next = 14;
+                break;
+              }
+
+              if (!promptMoveLayerOnce) {
+                _context6.next = 8;
+                break;
+              }
+
+              moveToLayer(true);
+              _context6.next = 14;
+              break;
+
+            case 8:
+              _context6.next = 10;
+              return $$b.confirm(confirmStr);
+
+            case 10:
+              ok = _context6.sent;
+
+              if (ok) {
+                _context6.next = 13;
+                break;
+              }
+
+              return _context6.abrupt("return");
+
+            case 13:
+              moveToLayer(true);
+
+            case 14:
+            case "end":
+              return _context6.stop();
+          }
         }
-
-        promptMoveLayerOnce = true;
-        svgCanvas.moveSelectedToLayer(destLayer);
-        svgCanvas.clearSelection();
-        populateLayers();
-      };
-
-      if (destLayer) {
-        if (promptMoveLayerOnce) {
-          moveToLayer(true);
-        } else {
-          $$b.confirm(confirmStr, moveToLayer);
-        }
-      }
-    });
+      }, _callee6, this);
+    })));
     $$b('#font_family').change(function () {
       svgCanvas.setFontFamily(this.value);
     });
@@ -31479,8 +32611,10 @@
       var valid = isValidUnit(attr, val, selectedElement);
 
       if (!valid) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         this.value = selectedElement.getAttribute(attr);
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
@@ -31509,6 +32643,7 @@
       }
 
       this.blur();
+      return true;
     }); // Prevent selection of elements when shift-clicking
 
     $$b('#palette').mouseover(function () {
@@ -31555,7 +32690,7 @@
           keypan = false;
       $$b('#svgcanvas').bind('mousemove mouseup', function (evt) {
         if (panning === false) {
-          return;
+          return true;
         }
 
         wArea.scrollLeft -= evt.clientX - lastX;
@@ -31575,6 +32710,8 @@
           lastY = evt.clientY;
           return false;
         }
+
+        return true;
       });
       $$b(window).mouseup(function () {
         panning = false;
@@ -31759,7 +32896,7 @@
         return;
       }
 
-      var perc = parseInt($$b(this).text().split('%')[0], 10);
+      var perc = parseInt($$b(this).text().split('%')[0]);
       changeOpacity(false, perc);
     }, true); // For slider usage, see: http://jqueryui.com/demos/slider/
 
@@ -31837,13 +32974,18 @@
 
     (function () {
       var inp;
+      /**
+      *
+      * @returns {undefined}
+      */
 
       var unfocus = function unfocus() {
         $$b(inp).blur();
       };
 
       $$b('#svg_editor').find('button, select, input:not(#text)').focus(function () {
-        inp = this;
+        inp = this; // eslint-disable-line consistent-this
+
         uiContext = 'toolbars';
         workarea.mousedown(unfocus);
       }).blur(function () {
@@ -31855,60 +32997,110 @@
         }
       });
     })();
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHPath = function clickFHPath() {
       if (toolButtonClick('#tool_fhpath')) {
         svgCanvas.setMode('fhpath');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickLine = function clickLine() {
       if (toolButtonClick('#tool_line')) {
         svgCanvas.setMode('line');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickSquare = function clickSquare() {
       if (toolButtonClick('#tool_square')) {
         svgCanvas.setMode('square');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickRect = function clickRect() {
       if (toolButtonClick('#tool_rect')) {
         svgCanvas.setMode('rect');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHRect = function clickFHRect() {
       if (toolButtonClick('#tool_fhrect')) {
         svgCanvas.setMode('fhrect');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickCircle = function clickCircle() {
       if (toolButtonClick('#tool_circle')) {
         svgCanvas.setMode('circle');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickEllipse = function clickEllipse() {
       if (toolButtonClick('#tool_ellipse')) {
         svgCanvas.setMode('ellipse');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHEllipse = function clickFHEllipse() {
       if (toolButtonClick('#tool_fhellipse')) {
         svgCanvas.setMode('fhellipse');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickImage = function clickImage() {
       if (toolButtonClick('#tool_image')) {
         svgCanvas.setMode('image');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickZoom = function clickZoom() {
       if (toolButtonClick('#tool_zoom')) {
@@ -31916,6 +33108,11 @@
         workarea.css('cursor', zoomInIcon);
       }
     };
+    /**
+    * @param {Float} multiplier
+    * @returns {undefined}
+    */
+
 
     var zoomImage = function zoomImage(multiplier) {
       var res = svgCanvas.getResolution();
@@ -31926,6 +33123,11 @@
       zoomDone();
       updateCanvas(true);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var dblclickZoom = function dblclickZoom() {
       if (toolButtonClick('#tool_zoom')) {
@@ -31933,38 +33135,67 @@
         setSelectMode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickText = function clickText() {
       if (toolButtonClick('#tool_text')) {
         svgCanvas.setMode('text');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickPath = function clickPath() {
       if (toolButtonClick('#tool_path')) {
         svgCanvas.setMode('path');
       }
-    }; // Delete is a contextual tool that only appears in the ribbon if
-    // an element has been selected
+    };
+    /**
+    * Delete is a contextual tool that only appears in the ribbon if
+    * an element has been selected.
+    * @returns {undefined}
+    */
 
 
     var deleteSelected = function deleteSelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.deleteSelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var cutSelected = function cutSelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.cutSelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var copySelected = function copySelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.copySelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var pasteInCenter = function pasteInCenter() {
       var zoom = svgCanvas.getZoom();
@@ -31972,49 +33203,114 @@
       var y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;
       svgCanvas.pasteElements('point', x, y);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var moveToTopSelected = function moveToTopSelected() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveToTopSelectedElement();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var moveToBottomSelected = function moveToBottomSelected() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveToBottomSelectedElement();
       }
     };
+    /**
+    * @param {"Up"|"Down"} dir
+    * @returns {undefined}
+    */
+
 
     var moveUpDownSelected = function moveUpDownSelected(dir) {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveUpDownSelected(dir);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var convertToPath$$1 = function convertToPath$$1() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.convertToPath();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var reorientPath = function reorientPath() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         path.reorient();
       }
     };
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var makeHyperlink = function makeHyperlink() {
-      if (selectedElement != null || multiselected) {
-        $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://', function (url) {
-          if (url) {
-            svgCanvas.makeHyperlink(url);
+
+    var makeHyperlink =
+    /*#__PURE__*/
+    function () {
+      var _ref17 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee7() {
+        var url;
+        return regeneratorRuntime.wrap(function _callee7$(_context7) {
+          while (1) {
+            switch (_context7.prev = _context7.next) {
+              case 0:
+                if (!(!isNullish(selectedElement) || multiselected)) {
+                  _context7.next = 5;
+                  break;
+                }
+
+                _context7.next = 3;
+                return $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://');
+
+              case 3:
+                url = _context7.sent;
+
+                if (url) {
+                  svgCanvas.makeHyperlink(url);
+                }
+
+              case 5:
+              case "end":
+                return _context7.stop();
+            }
           }
-        });
-      }
-    };
+        }, _callee7, this);
+      }));
+
+      return function makeHyperlink() {
+        return _ref17.apply(this, arguments);
+      };
+    }();
+    /**
+    * @param {Float} dx
+    * @param {Float} dy
+    * @returns {undefined}
+    */
+
 
     var moveSelected = function moveSelected(dx, dy) {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         if (curConfig.gridSnapping) {
           // Use grid snap value regardless of zoom level
           var multi = svgCanvas.getZoom() * curConfig.snappingStep;
@@ -32025,24 +33321,44 @@
         svgCanvas.moveSelectedElements(dx, dy);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var linkControlPoints = function linkControlPoints() {
       $$b('#tool_node_link').toggleClass('push_button_pressed tool_button');
       var linked = $$b('#tool_node_link').hasClass('push_button_pressed');
       path.linkControlPoints(linked);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clonePathNode = function clonePathNode() {
       if (path.getNodePoint()) {
         path.clonePathNode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var deletePathNode = function deletePathNode() {
       if (path.getNodePoint()) {
         path.deletePathNode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var addSubPath = function addSubPath() {
       var button = $$b('#tool_add_subpath');
@@ -32050,21 +33366,42 @@
       button.toggleClass('push_button_pressed tool_button');
       path.addSubPath(sp);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var opencloseSubPath = function opencloseSubPath() {
       path.opencloseSubPath();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var selectNext = function selectNext() {
       svgCanvas.cycleElement(1);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var selectPrev = function selectPrev() {
       svgCanvas.cycleElement(0);
     };
+    /**
+    * @param {0|1} cw
+    * @param {Integer} step
+    * @returns {undefined}
+    */
+
 
     var rotateSelected = function rotateSelected(cw, step) {
-      if (selectedElement == null || multiselected) {
+      if (isNullish(selectedElement) || multiselected) {
         return;
       }
 
@@ -32078,43 +33415,86 @@
     };
     /**
      * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument
-     * @returns {undefined}
+     * @returns {Promise} Resolves to `undefined`
      */
 
 
-    var clickClear = function clickClear() {
-      var _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2),
-          x = _curConfig$dimensions[0],
-          y = _curConfig$dimensions[1];
+    var clickClear =
+    /*#__PURE__*/
+    function () {
+      var _ref18 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee8() {
+        var _curConfig$dimensions, x, y, ok;
 
-      $$b.confirm(uiStrings$1.notification.QwantToClear, function (ok) {
-        if (!ok) {
-          return;
-        }
+        return regeneratorRuntime.wrap(function _callee8$(_context8) {
+          while (1) {
+            switch (_context8.prev = _context8.next) {
+              case 0:
+                _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2), x = _curConfig$dimensions[0], y = _curConfig$dimensions[1];
+                _context8.next = 3;
+                return $$b.confirm(uiStrings$1.notification.QwantToClear);
+
+              case 3:
+                ok = _context8.sent;
+
+                if (ok) {
+                  _context8.next = 6;
+                  break;
+                }
+
+                return _context8.abrupt("return");
+
+              case 6:
+                setSelectMode();
+                svgCanvas.clear();
+                svgCanvas.setResolution(x, y);
+                updateCanvas(true);
+                zoomImage();
+                populateLayers();
+                updateContextPanel();
+                prepPaints();
+                svgCanvas.runExtensions('onNewDocument');
+
+              case 15:
+              case "end":
+                return _context8.stop();
+            }
+          }
+        }, _callee8, this);
+      }));
+
+      return function clickClear() {
+        return _ref18.apply(this, arguments);
+      };
+    }();
+    /**
+    *
+    * @returns {false}
+    */
 
-        setSelectMode();
-        svgCanvas.clear();
-        svgCanvas.setResolution(x, y);
-        updateCanvas(true);
-        zoomImage();
-        populateLayers();
-        updateContextPanel();
-        prepPaints();
-        svgCanvas.runExtensions('onNewDocument');
-      });
-    };
 
     var clickBold = function clickBold() {
       svgCanvas.setBold(!svgCanvas.getBold());
       updateContextPanel();
       return false;
     };
+    /**
+    *
+    * @returns {false}
+    */
+
 
     var clickItalic = function clickItalic() {
       svgCanvas.setItalic(!svgCanvas.getItalic());
       updateContextPanel();
       return false;
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickSave = function clickSave() {
       // In the future, more options can be provided here
@@ -32126,117 +33506,141 @@
     };
 
     var loadingURL;
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var clickExport = function clickExport() {
-      $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
-      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
-      'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'],
+    var clickExport =
+    /*#__PURE__*/
+    function () {
+      var _ref19 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref17 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee6(imgType) {
-          var exportWindowName, openExportWindow, chrome, quality;
-          return regeneratorRuntime.wrap(function _callee6$(_context6) {
-            while (1) {
-              switch (_context6.prev = _context6.next) {
-                case 0:
-                  openExportWindow = function _ref18() {
-                    var str = uiStrings$1.notification.loadingImage;
+      regeneratorRuntime.mark(function _callee9() {
+        var imgType, exportWindowName, openExportWindow, chrome, quality;
+        return regeneratorRuntime.wrap(function _callee9$(_context9) {
+          while (1) {
+            switch (_context9.prev = _context9.next) {
+              case 0:
+                openExportWindow = function _ref20() {
+                  var loadingImage = uiStrings$1.notification.loadingImage;
 
-                    if (curConfig.exportWindowType === 'new') {
-                      editor.exportWindowCt++;
-                    }
+                  if (curConfig.exportWindowType === 'new') {
+                    editor.exportWindowCt++;
+                  }
 
-                    exportWindowName = curConfig.canvasName + editor.exportWindowCt;
-                    var popHTML, popURL;
+                  exportWindowName = curConfig.canvasName + editor.exportWindowCt;
+                  var popHTML, popURL;
 
-                    if (loadingURL) {
-                      popURL = loadingURL;
+                  if (loadingURL) {
+                    popURL = loadingURL;
+                  } else {
+                    popHTML = "<!DOCTYPE html><html>\n          <head>\n            <meta charset=\"utf-8\">\n            <title>".concat(loadingImage, "</title>\n          </head>\n          <body><h1>").concat(loadingImage, "</h1></body>\n        <html>");
+
+                    if (typeof URL !== 'undefined' && URL.createObjectURL) {
+                      var blob = new Blob([popHTML], {
+                        type: 'text/html'
+                      });
+                      popURL = URL.createObjectURL(blob);
                     } else {
-                      popHTML = "<!DOCTYPE html><html>\n            <head>\n              <meta charset=\"utf-8\">\n              <title>".concat(str, "</title>\n            </head>\n            <body><h1>").concat(str, "</h1></body>\n          <html>");
-
-                      if (typeof URL !== 'undefined' && URL.createObjectURL) {
-                        var blob = new Blob([popHTML], {
-                          type: 'text/html'
-                        });
-                        popURL = URL.createObjectURL(blob);
-                      } else {
-                        popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
-                      }
-
-                      loadingURL = popURL;
+                      popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
                     }
 
-                    exportWindow = window.open(popURL, exportWindowName);
-                  };
-
-                  if (imgType) {
-                    _context6.next = 3;
-                    break;
+                    loadingURL = popURL;
                   }
 
-                  return _context6.abrupt("return");
+                  exportWindow = window.open(popURL, exportWindowName);
+                };
 
-                case 3:
-                  chrome = isChrome();
+                _context9.next = 3;
+                return $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
+                // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
+                'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'], function () {
+                  var sel = $$b(this);
 
-                  if (!(imgType === 'PDF')) {
-                    _context6.next = 9;
-                    break;
+                  if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
+                    if (!$$b('#image-slider').length) {
+                      $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
+                    }
+                  } else {
+                    $$b('#image-slider').parent().remove();
                   }
+                });
 
-                  if (!customExportPDF && !chrome) {
-                    openExportWindow();
-                  }
+              case 3:
+                imgType = _context9.sent;
 
-                  svgCanvas.exportPDF(exportWindowName);
-                  _context6.next = 13;
+                if (imgType) {
+                  _context9.next = 6;
                   break;
+                }
 
-                case 9:
-                  if (!customExportImage) {
-                    openExportWindow();
-                  }
+                return _context9.abrupt("return");
 
-                  quality = parseInt($$b('#image-slider').val(), 10) / 100;
-                  /* const results = */
+              case 6:
+                chrome = isChrome();
 
-                  _context6.next = 13;
-                  return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+                if (!(imgType === 'PDF')) {
+                  _context9.next = 12;
+                  break;
+                }
 
-                case 13:
-                case "end":
-                  return _context6.stop();
-              }
+                if (!customExportPDF && !chrome) {
+                  openExportWindow();
+                }
+
+                svgCanvas.exportPDF(exportWindowName);
+                _context9.next = 16;
+                break;
+
+              case 12:
+                if (!customExportImage) {
+                  openExportWindow();
+                }
+
+                quality = parseInt($$b('#image-slider').val()) / 100;
+                /* const results = */
+
+                _context9.next = 16;
+                return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+
+              case 16:
+              case "end":
+                return _context9.stop();
             }
-          }, _callee6, this);
-        }));
-
-        return function (_x5) {
-          return _ref17.apply(this, arguments);
-        };
-      }(), function () {
-        var sel = $$b(this);
-
-        if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
-          if (!$$b('#image-slider').length) {
-            $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
           }
-        } else {
-          $$b('#image-slider').parent().remove();
-        }
-      });
-    }; // by default, svgCanvas.open() is a no-op.
-    // it is up to an extension mechanism (opera widget, etc)
-    // to call setCustomHandlers() which will make it do something
+        }, _callee9, this);
+      }));
+
+      return function clickExport() {
+        return _ref19.apply(this, arguments);
+      };
+    }();
+    /**
+     * By default, svgCanvas.open() is a no-op. It is up to an extension
+     *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which
+     *  will make it do something.
+     * @returns {undefined}
+     */
 
 
     var clickOpen = function clickOpen() {
       svgCanvas.open();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
+
+    var clickImport = function clickImport() {
+      /* */
+    };
+    /**
+    *
+    * @returns {undefined}
+    */
 
-    var clickImport = function clickImport() {};
 
     var clickUndo = function clickUndo() {
       if (undoMgr.getUndoStackSize() > 0) {
@@ -32244,6 +33648,11 @@
         populateLayers();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickRedo = function clickRedo() {
       if (undoMgr.getRedoStackSize() > 0) {
@@ -32251,6 +33660,11 @@
         populateLayers();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickGroup = function clickGroup() {
       // group
@@ -32260,15 +33674,30 @@
         svgCanvas.ungroupSelectedElement();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickClone = function clickClone() {
       svgCanvas.cloneSelectedElements(20, 20);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickAlign = function clickAlign() {
       var letter = this.id.replace('tool_align', '').charAt(0);
       svgCanvas.alignSelectedElements(letter, $$b('#align_relative_to').val());
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickWireframe = function clickWireframe() {
       $$b('#tool_wireframe').toggleClass('push_button_pressed tool_button');
@@ -32296,6 +33725,10 @@
     }).css('position', 'absolute');
     var docprops = false;
     var preferences = false;
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var showDocProperties = function showDocProperties() {
       if (docprops) {
@@ -32318,6 +33751,11 @@
       $$b('#canvas_title').val(svgCanvas.getDocumentTitle());
       $$b('#svg_docprops').show();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var showPreferences = function showPreferences() {
       if (preferences) {
@@ -32327,8 +33765,6 @@
       preferences = true;
       $$b('#main_menu').hide(); // Update background color with current one
 
-      var blocks = $$b('#bg_blocks div');
-      var curBg = 'cur_background';
       var canvasBg = curPrefs.bkgd_color;
       var url = $$b.pref('bkgd_url');
       blocks.each(function () {
@@ -32354,41 +33790,94 @@
       $$b('#grid_color').attr('value', curConfig.gridColor);
       $$b('#svg_prefs').show();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var hideSourceEditor = function hideSourceEditor() {
       $$b('#svg_source_editor').hide();
       editingsource = false;
       $$b('#svg_source_textarea').blur();
     };
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var saveSourceEditor = function saveSourceEditor() {
-      if (!editingsource) {
-        return;
-      }
 
-      var saveChanges = function saveChanges() {
-        svgCanvas.clearSelection();
-        hideSourceEditor();
-        zoomImage();
-        populateLayers();
-        updateTitle();
-        prepPaints();
-      };
+    var saveSourceEditor =
+    /*#__PURE__*/
+    function () {
+      var _ref21 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee10() {
+        var saveChanges, ok;
+        return regeneratorRuntime.wrap(function _callee10$(_context10) {
+          while (1) {
+            switch (_context10.prev = _context10.next) {
+              case 0:
+                if (editingsource) {
+                  _context10.next = 2;
+                  break;
+                }
 
-      if (!svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
-        $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource, function (ok) {
-          if (!ok) {
-            return false;
+                return _context10.abrupt("return");
+
+              case 2:
+                saveChanges = function saveChanges() {
+                  svgCanvas.clearSelection();
+                  hideSourceEditor();
+                  zoomImage();
+                  populateLayers();
+                  updateTitle();
+                  prepPaints();
+                };
+
+                if (svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
+                  _context10.next = 11;
+                  break;
+                }
+
+                _context10.next = 6;
+                return $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource);
+
+              case 6:
+                ok = _context10.sent;
+
+                if (ok) {
+                  _context10.next = 9;
+                  break;
+                }
+
+                return _context10.abrupt("return");
+
+              case 9:
+                saveChanges();
+                return _context10.abrupt("return");
+
+              case 11:
+                saveChanges();
+                setSelectMode();
+
+              case 13:
+              case "end":
+                return _context10.stop();
+            }
           }
+        }, _callee10, this);
+      }));
 
-          saveChanges();
-        });
-      } else {
-        saveChanges();
-      }
+      return function saveSourceEditor() {
+        return _ref21.apply(this, arguments);
+      };
+    }();
+    /**
+    *
+    * @returns {undefined}
+    */
 
-      setSelectMode();
-    };
 
     var hideDocProperties = function hideDocProperties() {
       $$b('#svg_docprops').hide();
@@ -32397,11 +33886,21 @@
       $$b('#image_save_opts input').val([$$b.pref('img_save')]);
       docprops = false;
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var hidePreferences = function hidePreferences() {
       $$b('#svg_prefs').hide();
       preferences = false;
     };
+    /**
+    *
+    * @returns {boolean} Whether there were problems saving the document properties
+    */
+
 
     var saveDocProperties = function saveDocProperties() {
       // set title
@@ -32415,22 +33914,27 @@
           h = height.val();
 
       if (w !== 'fit' && !isValidUnit('width', w)) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         width.parent().addClass('error');
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
       width.parent().removeClass('error');
 
       if (h !== 'fit' && !isValidUnit('height', h)) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         height.parent().addClass('error');
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
       height.parent().removeClass('error');
 
       if (!svgCanvas.setResolution(w, h)) {
+        /* await */
         $$b.alert(uiStrings$1.notification.noContentToFitTo);
         return false;
       } // Set image save option
@@ -32439,6 +33943,7 @@
       $$b.pref('img_save', $$b('#image_save_opts :checked').val());
       updateCanvas();
       hideDocProperties();
+      return true;
     };
     /**
     * Save user preferences based on current values in the UI.
@@ -32451,12 +33956,12 @@
     /*#__PURE__*/
     _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee7() {
-      var color, lang, _ref20, langParam, langData;
+    regeneratorRuntime.mark(function _callee11() {
+      var color, lang, _ref23, langParam, langData;
 
-      return regeneratorRuntime.wrap(function _callee7$(_context7) {
+      return regeneratorRuntime.wrap(function _callee11$(_context11) {
         while (1) {
-          switch (_context7.prev = _context7.next) {
+          switch (_context11.prev = _context11.next) {
             case 0:
               // Set background
               color = $$b('#bg_blocks div.cur_background').css('background-color') || '#FFF';
@@ -32465,18 +33970,18 @@
               lang = $$b('#lang_select').val();
 
               if (!(lang !== $$b.pref('lang'))) {
-                _context7.next = 11;
+                _context11.next = 11;
                 break;
               }
 
-              _context7.next = 6;
+              _context11.next = 6;
               return editor.putLocale(lang, goodLangs, curConfig);
 
             case 6:
-              _ref20 = _context7.sent;
-              langParam = _ref20.langParam;
-              langData = _ref20.langData;
-              _context7.next = 11;
+              _ref23 = _context11.sent;
+              langParam = _ref23.langParam;
+              langData = _ref23.langData;
+              _context11.next = 11;
               return setLang(langParam, langData);
 
             case 11:
@@ -32500,43 +34005,95 @@
 
             case 22:
             case "end":
-              return _context7.stop();
+              return _context11.stop();
           }
         }
-      }, _callee7, this);
+      }, _callee11, this);
     }));
 
     var resetScrollPos = $$b.noop;
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var cancelOverlays = function cancelOverlays() {
-      $$b('#dialog_box').hide();
+    var cancelOverlays =
+    /*#__PURE__*/
+    function () {
+      var _ref24 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee12() {
+        var ok;
+        return regeneratorRuntime.wrap(function _callee12$(_context12) {
+          while (1) {
+            switch (_context12.prev = _context12.next) {
+              case 0:
+                $$b('#dialog_box').hide();
 
-      if (!editingsource && !docprops && !preferences) {
-        if (curContext) {
-          svgCanvas.leaveContext();
-        }
+                if (!(!editingsource && !docprops && !preferences)) {
+                  _context12.next = 4;
+                  break;
+                }
 
-        return;
-      }
+                if (curContext) {
+                  svgCanvas.leaveContext();
+                }
 
-      if (editingsource) {
-        if (origSource !== $$b('#svg_source_textarea').val()) {
-          $$b.confirm(uiStrings$1.notification.QignoreSourceChanges, function (ok) {
-            if (ok) {
-              hideSourceEditor();
+                return _context12.abrupt("return");
+
+              case 4:
+                if (!editingsource) {
+                  _context12.next = 15;
+                  break;
+                }
+
+                if (!(origSource !== $$b('#svg_source_textarea').val())) {
+                  _context12.next = 12;
+                  break;
+                }
+
+                _context12.next = 8;
+                return $$b.confirm(uiStrings$1.notification.QignoreSourceChanges);
+
+              case 8:
+                ok = _context12.sent;
+
+                if (ok) {
+                  hideSourceEditor();
+                }
+
+                _context12.next = 13;
+                break;
+
+              case 12:
+                hideSourceEditor();
+
+              case 13:
+                _context12.next = 16;
+                break;
+
+              case 15:
+                if (docprops) {
+                  hideDocProperties();
+                } else if (preferences) {
+                  hidePreferences();
+                }
+
+              case 16:
+                resetScrollPos();
+
+              case 17:
+              case "end":
+                return _context12.stop();
             }
-          });
-        } else {
-          hideSourceEditor();
-        }
-      } else if (docprops) {
-        hideDocProperties();
-      } else if (preferences) {
-        hidePreferences();
-      }
+          }
+        }, _callee12, this);
+      }));
 
-      resetScrollPos();
-    };
+      return function cancelOverlays() {
+        return _ref24.apply(this, arguments);
+      };
+    }();
 
     var winWh = {
       width: $$b(window).width(),
@@ -32559,9 +34116,13 @@
       editor.ready(function () {
         // TODO: Find better way to detect when to do this to minimize
         // flickering effect
-        setTimeout(function () {
-          resetScrollPos();
-        }, 500);
+        return new Promise(function (resolve, reject) {
+          // eslint-disable-line promise/avoid-new
+          setTimeout(function () {
+            resetScrollPos();
+            resolve();
+          }, 500);
+        });
       });
       workarea.scroll(function () {
         curScrollPos = {
@@ -32590,6 +34151,7 @@
       }
     });
     $$b('#url_notice').click(function () {
+      /* await */
       $$b.alert(this.title);
     });
     $$b('#change_image_url').click(promptImgURL); // added these event handlers for all the push buttons so they
@@ -32632,8 +34194,13 @@
           button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');
         }
       }
-    } // TODO: go back to the color boxes having white background-color and then setting
-    //  background-image to none.png (otherwise partially transparent gradients look weird)
+    }
+    /**
+    * @param {external:jQuery} elem
+    * @todo Go back to the color boxes having white background-color and then setting
+    *  background-image to none.png (otherwise partially transparent gradients look weird)
+    * @returns {undefined}
+    */
 
 
     var colorPicker = function colorPicker(elem) {
@@ -32668,131 +34235,149 @@
       });
     };
 
-    var PaintBox = function PaintBox(container, type) {
-      var paintColor, paintOpacity;
-      var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
+    var PaintBox =
+    /*#__PURE__*/
+    function () {
+      function PaintBox(container, type) {
+        _classCallCheck(this, PaintBox);
 
-      var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n        <rect width=\"16.5\" height=\"16.5\"\n          fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n        <defs><linearGradient id=\"gradbox_\"/></defs>\n      </svg>"), 'text/xml');
-      var docElem = svgdocbox.documentElement;
-      docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
-      docElem.setAttribute('width', 16.5);
-      this.rect = docElem.firstElementChild;
-      this.defs = docElem.getElementsByTagName('defs')[0];
-      this.grad = this.defs.firstElementChild;
-      this.paint = new $$b.jGraduate.Paint({
-        solidColor: cur.color
-      });
-      this.type = type;
+        var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
 
-      this.setPaint = function (paint, apply) {
-        this.paint = paint;
-        var ptype = paint.type;
-        var opac = paint.alpha / 100;
-        var fillAttr = 'none';
+        var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n          <rect width=\"16.5\" height=\"16.5\"\n            fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n          <defs><linearGradient id=\"gradbox_\"/></defs>\n        </svg>"), 'text/xml');
+        var docElem = svgdocbox.documentElement;
+        docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
+        docElem.setAttribute('width', 16.5);
+        this.rect = docElem.firstElementChild;
+        this.defs = docElem.getElementsByTagName('defs')[0];
+        this.grad = this.defs.firstElementChild;
+        this.paint = new $$b.jGraduate.Paint({
+          solidColor: cur.color
+        });
+        this.type = type;
+      }
 
-        switch (ptype) {
-          case 'solidColor':
-            fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
-            break;
+      _createClass(PaintBox, [{
+        key: "setPaint",
+        value: function setPaint(paint, apply) {
+          this.paint = paint;
+          var ptype = paint.type;
+          var opac = paint.alpha / 100;
+          var fillAttr = 'none';
 
-          case 'linearGradient':
-          case 'radialGradient':
-            this.grad.remove();
-            this.grad = this.defs.appendChild(paint[ptype]);
-            var id = this.grad.id = 'gradbox_' + this.type;
-            fillAttr = 'url(#' + id + ')';
-            break;
-        }
-
-        this.rect.setAttribute('fill', fillAttr);
-        this.rect.setAttribute('opacity', opac);
-
-        if (apply) {
-          svgCanvas.setColor(this.type, paintColor, true);
-          svgCanvas.setPaintOpacity(this.type, paintOpacity, true);
-        }
-      };
-
-      this.update = function (apply) {
-        if (!selectedElement) {
-          return;
-        }
-
-        var type = this.type;
-
-        switch (selectedElement.tagName) {
-          case 'use':
-          case 'image':
-          case 'foreignObject':
-            // These elements don't have fill or stroke, so don't change
-            // the current value
-            return;
-
-          case 'g':
-          case 'a':
-            {
-              var childs = selectedElement.getElementsByTagName('*');
-              var gPaint = null;
-
-              for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
-                var elem = childs[_i3];
-                var p = elem.getAttribute(type);
-
-                if (_i3 === 0) {
-                  gPaint = p;
-                } else if (gPaint !== p) {
-                  gPaint = null;
-                  break;
-                }
-              }
-
-              if (gPaint === null) {
-                // No common color, don't update anything
-                paintColor = null;
-                return;
-              }
-
-              paintColor = gPaint;
-              paintOpacity = 1;
+          switch (ptype) {
+            case 'solidColor':
+              fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
               break;
-            }
 
-          default:
-            paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+            case 'linearGradient':
+            case 'radialGradient':
+              {
+                this.grad.remove();
+                this.grad = this.defs.appendChild(paint[ptype]);
+                var id = this.grad.id = 'gradbox_' + this.type;
+                fillAttr = 'url(#' + id + ')';
+                break;
+              }
+          }
 
-            if (isNaN(paintOpacity)) {
-              paintOpacity = 1.0;
-            }
+          this.rect.setAttribute('fill', fillAttr);
+          this.rect.setAttribute('opacity', opac);
 
-            var defColor = type === 'fill' ? 'black' : 'none';
-            paintColor = selectedElement.getAttribute(type) || defColor;
+          if (apply) {
+            svgCanvas.setColor(this.type, this._paintColor, true);
+            svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);
+          }
         }
+      }, {
+        key: "update",
+        value: function update(apply) {
+          if (!selectedElement) {
+            return;
+          }
 
-        if (apply) {
-          svgCanvas.setColor(type, paintColor, true);
-          svgCanvas.setPaintOpacity(type, paintOpacity, true);
+          var type = this.type;
+
+          switch (selectedElement.tagName) {
+            case 'use':
+            case 'image':
+            case 'foreignObject':
+              // These elements don't have fill or stroke, so don't change
+              // the current value
+              return;
+
+            case 'g':
+            case 'a':
+              {
+                var childs = selectedElement.getElementsByTagName('*');
+                var gPaint = null;
+
+                for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
+                  var elem = childs[_i3];
+                  var p = elem.getAttribute(type);
+
+                  if (_i3 === 0) {
+                    gPaint = p;
+                  } else if (gPaint !== p) {
+                    gPaint = null;
+                    break;
+                  }
+                }
+
+                if (gPaint === null) {
+                  // No common color, don't update anything
+                  this._paintColor = null;
+                  return;
+                }
+
+                this._paintColor = gPaint;
+                this._paintOpacity = 1;
+                break;
+              }
+
+            default:
+              {
+                this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+
+                if (isNaN(this._paintOpacity)) {
+                  this._paintOpacity = 1.0;
+                }
+
+                var defColor = type === 'fill' ? 'black' : 'none';
+                this._paintColor = selectedElement.getAttribute(type) || defColor;
+              }
+          }
+
+          if (apply) {
+            svgCanvas.setColor(type, this._paintColor, true);
+            svgCanvas.setPaintOpacity(type, this._paintOpacity, true);
+          }
+
+          this._paintOpacity *= 100;
+          var paint = getPaint(this._paintColor, this._paintOpacity, type); // update the rect inside #fill_color/#stroke_color
+
+          this.setPaint(paint);
         }
+      }, {
+        key: "prep",
+        value: function prep() {
+          var ptype = this.paint.type;
 
-        paintOpacity *= 100;
-        var paint = getPaint(paintColor, paintOpacity, type); // update the rect inside #fill_color/#stroke_color
-
-        this.setPaint(paint);
-      };
-
-      this.prep = function () {
-        var ptype = this.paint.type;
-
-        switch (ptype) {
-          case 'linearGradient':
-          case 'radialGradient':
-            var paint = new $$b.jGraduate.Paint({
-              copy: this.paint
-            });
-            svgCanvas.setPaint(type, paint);
-            break;
+          switch (ptype) {
+            case 'linearGradient':
+            case 'radialGradient':
+              {
+                var paint = new $$b.jGraduate.Paint({
+                  copy: this.paint
+                });
+                svgCanvas.setPaint(this.type, paint);
+                break;
+              }
+          }
         }
-      };
-    };
+      }]);
+
+      return PaintBox;
+    }();
 
     paintBox.fill = new PaintBox('#fill_color', 'fill');
     paintBox.stroke = new PaintBox('#stroke_color', 'stroke');
@@ -32875,29 +34460,61 @@
       $$b(this).removeClass('push_button_pressed').addClass('push_button');
     }); // ask for a layer name
 
-    $$b('#layer_new').click(function () {
-      var uniqName,
-          i = svgCanvas.getCurrentDrawing().getNumLayers();
+    $$b('#layer_new').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee13() {
+      var uniqName, i, newName;
+      return regeneratorRuntime.wrap(function _callee13$(_context13) {
+        while (1) {
+          switch (_context13.prev = _context13.next) {
+            case 0:
+              i = svgCanvas.getCurrentDrawing().getNumLayers();
 
-      do {
-        uniqName = uiStrings$1.layers.layer + ' ' + ++i;
-      } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
+              do {
+                uniqName = uiStrings$1.layers.layer + ' ' + ++i;
+              } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
 
-      $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName, function (newName) {
-        if (!newName) {
-          return;
+              _context13.next = 4;
+              return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName);
+
+            case 4:
+              newName = _context13.sent;
+
+              if (newName) {
+                _context13.next = 7;
+                break;
+              }
+
+              return _context13.abrupt("return");
+
+            case 7:
+              if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                _context13.next = 10;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.dupeLayerName);
+              return _context13.abrupt("return");
+
+            case 10:
+              svgCanvas.createLayer(newName);
+              updateContextPanel();
+              populateLayers();
+
+            case 13:
+            case "end":
+              return _context13.stop();
+          }
         }
-
-        if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.dupeLayerName);
-          return;
-        }
-
-        svgCanvas.createLayer(newName);
-        updateContextPanel();
-        populateLayers();
-      });
-    });
+      }, _callee13, this);
+    })));
+    /**
+     *
+     * @returns {undefined}
+     */
 
     function deleteLayer() {
       if (svgCanvas.deleteCurrentLayer()) {
@@ -32910,23 +34527,67 @@
         $$b('#layerlist tr.layer:first').addClass('layersel');
       }
     }
+    /**
+     *
+     * @returns {undefined}
+     */
+
 
     function cloneLayer() {
-      var name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
-      $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name, function (newName) {
-        if (!newName) {
-          return;
-        }
+      return _cloneLayer.apply(this, arguments);
+    }
+    /**
+     *
+     * @returns {undefined}
+     */
 
-        if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.dupeLayerName);
-          return;
-        }
 
-        svgCanvas.cloneLayer(newName);
-        updateContextPanel();
-        populateLayers();
-      });
+    function _cloneLayer() {
+      _cloneLayer = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee19() {
+        var name, newName;
+        return regeneratorRuntime.wrap(function _callee19$(_context19) {
+          while (1) {
+            switch (_context19.prev = _context19.next) {
+              case 0:
+                name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
+                _context19.next = 3;
+                return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name);
+
+              case 3:
+                newName = _context19.sent;
+
+                if (newName) {
+                  _context19.next = 6;
+                  break;
+                }
+
+                return _context19.abrupt("return");
+
+              case 6:
+                if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                  _context19.next = 9;
+                  break;
+                }
+
+                /* await */
+                $$b.alert(uiStrings$1.notification.dupeLayerName);
+                return _context19.abrupt("return");
+
+              case 9:
+                svgCanvas.cloneLayer(newName);
+                updateContextPanel();
+                populateLayers();
+
+              case 12:
+              case "end":
+                return _context19.stop();
+            }
+          }
+        }, _callee19, this);
+      }));
+      return _cloneLayer.apply(this, arguments);
     }
 
     function mergeLayer() {
@@ -32938,6 +34599,11 @@
       updateContextPanel();
       populateLayers();
     }
+    /**
+     * @param {Integer} pos
+     * @returns {undefined}
+     */
+
 
     function moveLayer(pos) {
       var total = svgCanvas.getCurrentDrawing().getNumLayers();
@@ -32957,23 +34623,52 @@
     $$b('#layer_down').click(function () {
       moveLayer(1);
     });
-    $$b('#layer_rename').click(function () {
-      // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
-      var oldName = $$b('#layerlist tr.layersel td.layername').text();
-      $$b.prompt(uiStrings$1.notification.enterNewLayerName, '', function (newName) {
-        if (!newName) {
-          return;
-        }
+    $$b('#layer_rename').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee14() {
+      var oldName, newName;
+      return regeneratorRuntime.wrap(function _callee14$(_context14) {
+        while (1) {
+          switch (_context14.prev = _context14.next) {
+            case 0:
+              // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
+              oldName = $$b('#layerlist tr.layersel td.layername').text();
+              _context14.next = 3;
+              return $$b.prompt(uiStrings$1.notification.enterNewLayerName, '');
 
-        if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.layerHasThatName);
-          return;
-        }
+            case 3:
+              newName = _context14.sent;
 
-        svgCanvas.renameCurrentLayer(newName);
-        populateLayers();
-      });
-    });
+              if (newName) {
+                _context14.next = 6;
+                break;
+              }
+
+              return _context14.abrupt("return");
+
+            case 6:
+              if (!(oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName))) {
+                _context14.next = 9;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.layerHasThatName);
+              return _context14.abrupt("return");
+
+            case 9:
+              svgCanvas.renameCurrentLayer(newName);
+              populateLayers();
+
+            case 11:
+            case "end":
+              return _context14.stop();
+          }
+        }
+      }, _callee14, this);
+    })));
     var SIDEPANEL_MAXWIDTH = 300;
     var SIDEPANEL_OPENWIDTH = 150;
     var sidedrag = -1,
@@ -32989,10 +34684,15 @@
       var rulerX = $$b('#ruler_x');
       $$b('#sidepanels').width('+=' + delta);
       $$b('#layerpanel').width('+=' + delta);
-      rulerX.css('right', parseInt(rulerX.css('right'), 10) + delta);
-      workarea.css('right', parseInt(workarea.css('right'), 10) + delta);
+      rulerX.css('right', parseInt(rulerX.css('right')) + delta);
+      workarea.css('right', parseInt(workarea.css('right')) + delta);
       svgCanvas.runExtensions('workareaResized');
     };
+    /**
+    * @param {Event} evt
+    * @returns {undefined}
+    */
+
 
     var resizeSidePanel = function resizeSidePanel(evt) {
       if (!allowmove) {
@@ -33065,6 +34765,9 @@
     };
 
     $$b(window).bind('load resize', centerCanvas);
+    /**
+     * @implements {module:jQuerySpinButton.StepCallback}
+     */
 
     function stepFontSize(elem, step) {
       var origVal = Number(elem.value);
@@ -33093,6 +34796,10 @@
 
       return sugVal;
     }
+    /**
+     * @implements {module:jQuerySpinButton.StepCallback}
+     */
+
 
     function stepZoom(elem, step) {
       var origVal = Number(elem.value);
@@ -33655,9 +35362,9 @@
                 keyval = opts.key;
               }
 
-              keyval += '';
+              keyval = String(keyval);
               var fn = opts.fn;
-              $$b.each(keyval.split('/'), function (i, key) {
+              $$b.each(keyval.split('/'), function (j, key) {
                 $$b(document).bind('keydown', key, function (e) {
                   fn();
 
@@ -33679,6 +35386,8 @@
                 }
               }
             }
+
+            return true;
           }); // Setup flyouts
 
           setupFlyouts(flyouts); // Misc additional actions
@@ -33778,7 +35487,7 @@
         toggleSidePanel();
       }
 
-      $$b('#rulers').toggle(!!curConfig.showRulers);
+      $$b('#rulers').toggle(Boolean(curConfig.showRulers));
 
       if (curConfig.showRulers) {
         $$b('#show_rulers')[0].checked = true;
@@ -33908,10 +35617,18 @@
           break;
       }
     });
+    /**
+    * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}
+    * @param {"dupe"|"delete"|"merge_down"|"merge_all"} action
+    * @param {external:jQuery} el
+    * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos
+    * @returns {undefined}
+    */
 
     var lmenuFunc = function lmenuFunc(action, el, pos) {
       switch (action) {
         case 'dupe':
+          /* await */
           cloneLayer();
           break;
 
@@ -33945,6 +35662,9 @@
     });
     $$b('#cmenu_canvas li').disableContextMenu();
     canvMenu.enableContextMenuItems('#delete,#cut,#copy');
+    /**
+     * @returns {undefined}
+     */
 
     function enableOrDisableClipboard() {
       var svgeditClipboard;
@@ -33977,6 +35697,8 @@
 
         return uiStrings$1.notification.unsavedChanges;
       }
+
+      return true;
     });
     /**
     * Expose the `uiStrings`.
@@ -33988,36 +35710,48 @@
       return uiStrings$1;
     };
     /**
-    * @callback module:SVGEditor.OpenPrepCallback
-    * @param {boolean} noChanges
-    * @returns {undefined}
-    */
-
-    /**
-    * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback
-    * @returns {undefined}
+    * @returns {Promise} Resolves to boolean indicating `true` if there were no changes
+    *  and `false` after the user confirms.
     */
 
 
-    editor.openPrep = function (func) {
+    editor.openPrep = function () {
       $$b('#main_menu').hide();
 
       if (undoMgr.getUndoStackSize() === 0) {
-        func(true);
-      } else {
-        $$b.confirm(uiStrings$1.notification.QwantToOpen, func);
+        return true;
       }
+
+      return $$b.confirm(uiStrings$1.notification.QwantToOpen);
     };
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragEnter(e) {
       e.stopPropagation();
       e.preventDefault(); // and indicator should be displayed here, such as "drop files here"
     }
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragOver(e) {
       e.stopPropagation();
       e.preventDefault();
     }
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragLeave(e) {
       e.stopPropagation();
@@ -34029,6 +35763,10 @@
 
 
     if (window.FileReader) {
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
       var importImage = function importImage(e) {
         $$b.process_cancel(uiStrings$1.notification.loadingImage);
         e.stopPropagation();
@@ -34046,72 +35784,79 @@
         else */
 
 
-        if (file.type.includes('image')) {
-          // Detected an image
-          // svg handling
-          var reader;
+        if (!file.type.includes('image')) {
+          return;
+        } // Detected an image
+        // svg handling
 
-          if (file.type.includes('svg')) {
-            reader = new FileReader();
 
-            reader.onloadend = function (e) {
-              var newElement = svgCanvas.importSvgString(e.target.result, true);
-              svgCanvas.ungroupSelectedElement();
-              svgCanvas.ungroupSelectedElement();
-              svgCanvas.groupSelectedElements();
+        var reader;
+
+        if (file.type.includes('svg')) {
+          reader = new FileReader();
+
+          reader.onloadend = function (ev) {
+            var newElement = svgCanvas.importSvgString(ev.target.result, true);
+            svgCanvas.ungroupSelectedElement();
+            svgCanvas.ungroupSelectedElement();
+            svgCanvas.groupSelectedElements();
+            svgCanvas.alignSelectedElements('m', 'page');
+            svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
+
+            svgCanvas.selectOnly([newElement]);
+            $$b('#dialog_box').hide();
+          };
+
+          reader.readAsText(file);
+        } else {
+          // bitmap handling
+          reader = new FileReader();
+
+          reader.onloadend = function (_ref27) {
+            var result = _ref27.target.result;
+
+            /**
+            * Insert the new image until we know its dimensions
+            * @param {Float} width
+            * @param {Float} height
+            * @returns {undefined}
+            */
+            var insertNewImage = function insertNewImage(width, height) {
+              var newImage = svgCanvas.addSVGElementFromJson({
+                element: 'image',
+                attr: {
+                  x: 0,
+                  y: 0,
+                  width: width,
+                  height: height,
+                  id: svgCanvas.getNextId(),
+                  style: 'pointer-events:inherit'
+                }
+              });
+              svgCanvas.setHref(newImage, result);
+              svgCanvas.selectOnly([newImage]);
               svgCanvas.alignSelectedElements('m', 'page');
-              svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
-
-              svgCanvas.selectOnly([newElement]);
+              svgCanvas.alignSelectedElements('c', 'page');
+              updateContextPanel();
               $$b('#dialog_box').hide();
+            }; // create dummy img so we know the default dimensions
+
+
+            var imgWidth = 100;
+            var imgHeight = 100;
+            var img = new Image();
+            img.style.opacity = 0;
+
+            img.onload = function () {
+              imgWidth = img.offsetWidth || img.naturalWidth || img.width;
+              imgHeight = img.offsetHeight || img.naturalHeight || img.height;
+              insertNewImage(imgWidth, imgHeight);
             };
 
-            reader.readAsText(file);
-          } else {
-            // bitmap handling
-            reader = new FileReader();
+            img.src = result;
+          };
 
-            reader.onloadend = function (_ref21) {
-              var result = _ref21.target.result;
-
-              // let's insert the new image until we know its dimensions
-              var insertNewImage = function insertNewImage(width, height) {
-                var newImage = svgCanvas.addSVGElementFromJson({
-                  element: 'image',
-                  attr: {
-                    x: 0,
-                    y: 0,
-                    width: width,
-                    height: height,
-                    id: svgCanvas.getNextId(),
-                    style: 'pointer-events:inherit'
-                  }
-                });
-                svgCanvas.setHref(newImage, result);
-                svgCanvas.selectOnly([newImage]);
-                svgCanvas.alignSelectedElements('m', 'page');
-                svgCanvas.alignSelectedElements('c', 'page');
-                updateContextPanel();
-                $$b('#dialog_box').hide();
-              }; // create dummy img so we know the default dimensions
-
-
-              var imgWidth = 100;
-              var imgHeight = 100;
-              var img = new Image();
-              img.style.opacity = 0;
-
-              img.onload = function () {
-                imgWidth = img.offsetWidth || img.naturalWidth || img.width;
-                imgHeight = img.offsetHeight || img.naturalHeight || img.height;
-                insertNewImage(imgWidth, imgHeight);
-              };
-
-              img.src = result;
-            };
-
-            reader.readAsDataURL(file);
-          }
+          reader.readAsDataURL(file);
         }
       };
 
@@ -34119,28 +35864,75 @@
       workarea[0].addEventListener('dragover', onDragOver);
       workarea[0].addEventListener('dragleave', onDragLeave);
       workarea[0].addEventListener('drop', importImage);
-      var open = $$b('<input type="file">').click(function () {
-        var f = this;
-        editor.openPrep(function (ok) {
-          if (!ok) {
-            return;
+      var open = $$b('<input type="file">').click(
+      /*#__PURE__*/
+      _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee16() {
+        var ok, reader;
+        return regeneratorRuntime.wrap(function _callee16$(_context16) {
+          while (1) {
+            switch (_context16.prev = _context16.next) {
+              case 0:
+                _context16.next = 2;
+                return editor.openPrep();
+
+              case 2:
+                ok = _context16.sent;
+
+                if (ok) {
+                  _context16.next = 5;
+                  break;
+                }
+
+                return _context16.abrupt("return");
+
+              case 5:
+                svgCanvas.clear();
+
+                if (this.files.length === 1) {
+                  $$b.process_cancel(uiStrings$1.notification.loadingImage);
+                  reader = new FileReader();
+
+                  reader.onloadend =
+                  /*#__PURE__*/
+                  function () {
+                    var _ref29 = _asyncToGenerator(
+                    /*#__PURE__*/
+                    regeneratorRuntime.mark(function _callee15(e) {
+                      return regeneratorRuntime.wrap(function _callee15$(_context15) {
+                        while (1) {
+                          switch (_context15.prev = _context15.next) {
+                            case 0:
+                              _context15.next = 2;
+                              return loadSvgString(e.target.result);
+
+                            case 2:
+                              updateCanvas();
+
+                            case 3:
+                            case "end":
+                              return _context15.stop();
+                          }
+                        }
+                      }, _callee15, this);
+                    }));
+
+                    return function (_x6) {
+                      return _ref29.apply(this, arguments);
+                    };
+                  }();
+
+                  reader.readAsText(this.files[0]);
+                }
+
+              case 7:
+              case "end":
+                return _context16.stop();
+            }
           }
-
-          svgCanvas.clear();
-
-          if (f.files.length === 1) {
-            $$b.process_cancel(uiStrings$1.notification.loadingImage);
-            var reader = new FileReader();
-
-            reader.onloadend = function (e) {
-              loadSvgString(e.target.result);
-              updateCanvas();
-            };
-
-            reader.readAsText(f.files[0]);
-          }
-        });
-      });
+        }, _callee16, this);
+      })));
       $$b('#tool_open').show().prepend(open);
       var imgImport = $$b('<input type="file">').change(importImage);
       $$b('#tool_import').show().prepend(imgImport);
@@ -34163,24 +35955,26 @@
     var setLang = editor.setLang =
     /*#__PURE__*/
     function () {
-      var _ref22 = _asyncToGenerator(
+      var _ref30 = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee8(lang, allStrings) {
-        var oldLayerName, renameLayer, ext, elems;
-        return regeneratorRuntime.wrap(function _callee8$(_context8) {
+      regeneratorRuntime.mark(function _callee17(lang, allStrings) {
+        var _this = this;
+
+        var oldLayerName, renameLayer, elems;
+        return regeneratorRuntime.wrap(function _callee17$(_context17) {
           while (1) {
-            switch (_context8.prev = _context8.next) {
+            switch (_context17.prev = _context17.next) {
               case 0:
                 editor.langChanged = true;
                 $$b.pref('lang', lang);
                 $$b('#lang_select').val(lang);
 
                 if (allStrings) {
-                  _context8.next = 5;
+                  _context17.next = 5;
                   break;
                 }
 
-                return _context8.abrupt("return");
+                return _context17.abrupt("return");
 
               case 5:
                 $$b.extend(uiStrings$1, allStrings); // const notif = allStrings.notification; // Currently unused
@@ -34198,39 +35992,31 @@
 
 
                 if (!extsPreLang.length) {
-                  _context8.next = 21;
+                  _context17.next = 17;
                   break;
                 }
 
-              case 12:
-                if (!extsPreLang.length) {
-                  _context8.next = 19;
-                  break;
-                }
+                _context17.next = 14;
+                return Promise.all(extsPreLang.map(function (ext) {
+                  loadedExtensionNames.push(ext.name);
+                  return ext.langReady({
+                    lang: lang,
+                    uiStrings: uiStrings$1,
+                    importLocale: getImportLocale({
+                      defaultLang: lang,
+                      defaultName: ext.name
+                    })
+                  });
+                }));
 
-                ext = extsPreLang.shift();
-                loadedExtensionNames.push(ext.name);
-                _context8.next = 17;
-                return ext.langReady({
-                  lang: lang,
-                  uiStrings: uiStrings$1,
-                  importLocale: getImportLocale({
-                    defaultLang: lang,
-                    defaultName: ext.name
-                  })
-                });
+              case 14:
+                extsPreLang.length = 0;
+                _context17.next = 18;
+                break;
 
               case 17:
-                _context8.next = 12;
-                break;
-
-              case 19:
-                _context8.next = 22;
-                break;
-
-              case 21:
                 loadedExtensionNames.forEach(function (loadedExtensionName) {
-                  svgCanvas.runExtensions('langReady',
+                  _this.runExtension(loadedExtensionName, 'langReady',
                   /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */
                   {
                     lang: lang,
@@ -34242,7 +36028,7 @@
                   });
                 });
 
-              case 22:
+              case 18:
                 svgCanvas.runExtensions('langChanged',
                 /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */
                 lang); // Update flyout tooltips
@@ -34263,16 +36049,16 @@
                   $$b('#tool_pos' + this.id.substr(10))[0].title = this.title;
                 });
 
-              case 27:
+              case 23:
               case "end":
-                return _context8.stop();
+                return _context17.stop();
             }
           }
-        }, _callee8, this);
+        }, _callee17, this);
       }));
 
-      return function (_x6, _x7) {
-        return _ref22.apply(this, arguments);
+      return function (_x7, _x8) {
+        return _ref30.apply(this, arguments);
       };
     }();
 
@@ -34322,47 +36108,134 @@
   };
   /**
   * @callback module:SVGEditor.ReadyCallback
-  * @returns {undefined}
+  * @returns {Promise|undefined}
   */
 
   /**
   * Queues a callback to be invoked when the editor is ready (or
   *   to be invoked immediately if it is already ready--i.e.,
-  *   if `svgEditor.runCallbacks` has been run).
+  *   if `runCallbacks` has been run).
   * @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke
-  * @returns {undefined}
+  * @returns {Promise} Resolves when all callbacks, including the supplied have resolved
   */
 
 
   editor.ready = function (cb) {
-    if (!isReady) {
-      callbacks.push(cb);
-    } else {
-      cb();
-    }
+    // eslint-disable-line promise/prefer-await-to-callbacks
+    return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
+      if (isReady) {
+        resolve(cb()); // eslint-disable-line callback-return, promise/prefer-await-to-callbacks
+
+        return;
+      }
+
+      callbacks.push([cb, resolve, reject]);
+    });
   };
   /**
   * Invokes the callbacks previous set by `svgEditor.ready`
-  * @returns {undefined}
+  * @returns {Promise} Resolves to `undefined` if all callbacks succeeded and rejects otherwise
   */
 
 
-  editor.runCallbacks = function () {
-    callbacks.forEach(function (cb) {
-      cb();
-    });
-    isReady = true;
-  };
+  editor.runCallbacks =
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee20() {
+    return regeneratorRuntime.wrap(function _callee20$(_context20) {
+      while (1) {
+        switch (_context20.prev = _context20.next) {
+          case 0:
+            _context20.prev = 0;
+            _context20.next = 3;
+            return Promise.all(callbacks.map(function (_ref33) {
+              var _ref34 = _slicedToArray(_ref33, 1),
+                  cb = _ref34[0];
+
+              return cb(); // eslint-disable-line promise/prefer-await-to-callbacks
+            }));
+
+          case 3:
+            _context20.next = 9;
+            break;
+
+          case 5:
+            _context20.prev = 5;
+            _context20.t0 = _context20["catch"](0);
+            callbacks.forEach(function (_ref35) {
+              var _ref36 = _slicedToArray(_ref35, 3),
+                  reject = _ref36[2];
+
+              reject();
+            });
+            throw _context20.t0;
+
+          case 9:
+            callbacks.forEach(function (_ref37) {
+              var _ref38 = _slicedToArray(_ref37, 2),
+                  resolve = _ref38[1];
+
+              resolve();
+            });
+            isReady = true;
+
+          case 11:
+          case "end":
+            return _context20.stop();
+        }
+      }
+    }, _callee20, this, [[0, 5]]);
+  }));
   /**
   * @param {string} str The SVG string to load
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}]
+  * @param {boolean} [opts.noAlert=false] Option to avoid alert to user and instead get rejected promise
+  * @returns {Promise}
   */
 
-
   editor.loadFromString = function (str) {
-    editor.ready(function () {
-      loadSvgString(str);
-    });
+    var _ref39 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        noAlert = _ref39.noAlert;
+
+    editor.ready(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee21() {
+      return regeneratorRuntime.wrap(function _callee21$(_context21) {
+        while (1) {
+          switch (_context21.prev = _context21.next) {
+            case 0:
+              _context21.prev = 0;
+              _context21.next = 3;
+              return loadSvgString(str, {
+                noAlert: noAlert
+              });
+
+            case 3:
+              _context21.next = 9;
+              break;
+
+            case 5:
+              _context21.prev = 5;
+              _context21.t0 = _context21["catch"](0);
+
+              if (!noAlert) {
+                _context21.next = 9;
+                break;
+              }
+
+              throw _context21.t0;
+
+            case 9:
+            case "end":
+              return _context21.stop();
+          }
+        }
+      }, _callee21, this, [[0, 5]]);
+    })));
   };
   /**
   * Not presently in use.
@@ -34384,52 +36257,70 @@
 
   /**
   * @param {string} url URL from which to load an SVG string via Ajax
-  * @param {PlainObject} [opts] May contain properties: `cache`, `callback`
-  * @param {boolean} opts.cache
-  * @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}] May contain properties: `cache`, `callback`
+  * @param {boolean} [opts.cache]
+  * @param {boolean} [opts.noAlert]
+  * @returns {Promise} Resolves to `undefined` or rejects upon bad loading of
+  *   the SVG (or upon failure to parse the loaded string) when `noAlert` is
+  *   enabled
   */
 
 
-  editor.loadFromURL = function (url, opts) {
-    if (!opts) {
-      opts = {};
-    }
+  editor.loadFromURL = function (url) {
+    var _ref41 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        cache = _ref41.cache,
+        noAlert = _ref41.noAlert;
 
-    var _opts = opts,
-        cache = _opts.cache,
-        cb = _opts.callback;
-    editor.ready(function () {
-      $$b.ajax({
-        url: url,
-        dataType: 'text',
-        cache: !!cache,
-        beforeSend: function beforeSend() {
-          $$b.process_cancel(uiStrings$1.notification.loadingImage);
-        },
-        success: function success(str) {
-          loadSvgString(str, cb);
-        },
-        error: function error(xhr, stat, err) {
-          if (xhr.status !== 404 && xhr.responseText) {
-            loadSvgString(xhr.responseText, cb);
-          } else {
-            $$b.alert(uiStrings$1.notification.URLloadFail + ': \n' + err, cb);
+    return editor.ready(function () {
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        $$b.ajax({
+          url: url,
+          dataType: 'text',
+          cache: Boolean(cache),
+          beforeSend: function beforeSend() {
+            $$b.process_cancel(uiStrings$1.notification.loadingImage);
+          },
+          success: function success(str) {
+            resolve(loadSvgString(str, {
+              noAlert: noAlert
+            }));
+          },
+          error: function error(xhr, stat, err) {
+            if (xhr.status !== 404 && xhr.responseText) {
+              resolve(loadSvgString(xhr.responseText, {
+                noAlert: noAlert
+              }));
+              return;
+            }
+
+            if (noAlert) {
+              reject(new Error('URLLoadFail'));
+              return;
+            }
+
+            $$b.alert(uiStrings$1.notification.URLLoadFail + ': \n' + err);
+            resolve();
+          },
+          complete: function complete() {
+            $$b('#dialog_box').hide();
           }
-        },
-        complete: function complete() {
-          $$b('#dialog_box').hide();
-        }
+        });
       });
     });
   };
   /**
   * @param {string} str The Data URI to base64-decode (if relevant) and load
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}]
+  * @param {boolean} [opts.noAlert]
+  * @returns {Promise} Resolves to `undefined` and rejects if loading SVG string fails and `noAlert` is enabled
   */
 
 
   editor.loadFromDataURI = function (str) {
+    var _ref42 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        noAlert = _ref42.noAlert;
+
     editor.ready(function () {
       var base64 = false;
       var pre = str.match(/^data:image\/svg\+xml;base64,/);
@@ -34445,7 +36336,9 @@
       }
 
       var src = str.slice(pre.length);
-      loadSvgString(base64 ? decode64(src) : decodeURIComponent(src));
+      return loadSvgString(base64 ? decode64(src) : decodeURIComponent(src), {
+        noAlert: noAlert
+      });
     });
   };
   /**
@@ -34476,15 +36369,17 @@
   var extensionsAdded = false;
   var messageQueue = [];
   /**
-   * @param {Any} data
-   * @param {string} origin
+   * @param {PlainObject} info
+   * @param {Any} info.data
+   * @param {string} info.origin
    * @fires module:svgcanvas.SvgCanvas#event:message
    * @returns {undefined}
    */
 
-  var messageListener = function messageListener(_ref23) {
-    var data = _ref23.data,
-        origin = _ref23.origin;
+  var messageListener = function messageListener(_ref43) {
+    var data = _ref43.data,
+        origin = _ref43.origin;
+    // eslint-disable-line no-shadow
     // console.log('data, origin, extensionsAdded', data, origin, extensionsAdded);
     var messageObj = {
       data: data,
@@ -34503,10 +36398,34 @@
   window.addEventListener('message', messageListener); // Run init once DOM is loaded
   // jQuery(editor.init);
 
-  Promise.resolve().then(function () {
-    // We wait a micro-task to let the svgEditor variable be defined for module checks
-    editor.init();
-  });
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee22() {
+    return regeneratorRuntime.wrap(function _callee22$(_context22) {
+      while (1) {
+        switch (_context22.prev = _context22.next) {
+          case 0:
+            _context22.prev = 0;
+            _context22.next = 3;
+            return Promise.resolve();
+
+          case 3:
+            editor.init();
+            _context22.next = 9;
+            break;
+
+          case 6:
+            _context22.prev = 6;
+            _context22.t0 = _context22["catch"](0);
+            console.error(_context22.t0); // eslint-disable-line no-console
+
+          case 9:
+          case "end":
+            return _context22.stop();
+        }
+      }
+    }, _callee22, this, [[0, 6]]);
+  }))();
 
   window.svgEditor = editor;
   window.svgEditor.modules = false;
diff --git a/jsdoc-check-overly-generic-types.js b/jsdoc-check-overly-generic-types.js
index 8664d894..e63367cb 100644
--- a/jsdoc-check-overly-generic-types.js
+++ b/jsdoc-check-overly-generic-types.js
@@ -2,7 +2,7 @@
 /**
  * @todo Fork find-in-files to get ignore pattern support
  */
-const fif = require('find-in-files');
+import fif from 'find-in-files';
 
 (async () => {
 /**
@@ -21,7 +21,7 @@ let results = await Promise.all(fileMatchPatterns.map((fileMatchPattern) => {
     {
       // We grab to the end of the line as the `line` result for `find-in-files`
       //  only grabs from the beginning of the file to the end of the match.
-      term: `(@[^{\\n]*{[^}\\n]*(\\bobject|\\barray\\b|[^.]function|\\bnumber|\\*)[^}\\n]*}|@.*{}).*`,
+      term: `(@[^{\\n]*{[^}\\n]*(\\bobject|\\barray\\b|[^.]function|\\bnumber|\\*)[^}\\n]*}|@.*{} ).*`,
       flags: 'gi'
     },
     fileMatchPattern,
diff --git a/package-lock.json b/package-lock.json
index 81f7afaf..7a90f966 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "svgedit",
-  "version": "3.2.0",
+  "version": "4.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,25 +14,83 @@
       }
     },
     "@babel/core": {
-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.1.2.tgz",
-      "integrity": "sha512-IFeSSnjXdhDaoysIlev//UzHZbdEmm7D0EIH2qtse9xK7mXEZQpYjs2P00XlP1qYsYvid79p+Zgg6tz1mp6iVw==",
+      "version": "7.1.6",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.1.6.tgz",
+      "integrity": "sha512-Hz6PJT6e44iUNpAn8AoyAs6B3bl60g7MJQaI0rZEar6ECzh6+srYO1xlIdssio34mPaUtAb1y+XlkkSJzok3yw==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.1.2",
-        "@babel/helpers": "^7.1.2",
-        "@babel/parser": "^7.1.2",
+        "@babel/generator": "^7.1.6",
+        "@babel/helpers": "^7.1.5",
+        "@babel/parser": "^7.1.6",
         "@babel/template": "^7.1.2",
-        "@babel/traverse": "^7.1.0",
-        "@babel/types": "^7.1.2",
+        "@babel/traverse": "^7.1.6",
+        "@babel/types": "^7.1.6",
         "convert-source-map": "^1.1.0",
-        "debug": "^3.1.0",
-        "json5": "^0.5.0",
+        "debug": "^4.1.0",
+        "json5": "^2.1.0",
         "lodash": "^4.17.10",
         "resolve": "^1.3.2",
         "semver": "^5.4.1",
         "source-map": "^0.5.0"
+      },
+      "dependencies": {
+        "@babel/generator": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.1.6.tgz",
+          "integrity": "sha512-brwPBtVvdYdGxtenbQgfCdDPmtkmUBZPjUoK5SXJEBuHaA5BCubh9ly65fzXz7R6o5rA76Rs22ES8Z+HCc0YIQ==",
+          "dev": true,
+          "requires": {
+            "@babel/types": "^7.1.6",
+            "jsesc": "^2.5.1",
+            "lodash": "^4.17.10",
+            "source-map": "^0.5.0",
+            "trim-right": "^1.0.1"
+          }
+        },
+        "@babel/parser": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.1.6.tgz",
+          "integrity": "sha512-dWP6LJm9nKT6ALaa+bnL247GHHMWir3vSlZ2+IHgHgktZQx0L3Uvq2uAWcuzIe+fujRsYWBW2q622C5UvGK9iQ==",
+          "dev": true
+        },
+        "@babel/traverse": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.1.6.tgz",
+          "integrity": "sha512-CXedit6GpISz3sC2k2FsGCUpOhUqKdyL0lqNrImQojagnUMXf8hex4AxYFRuMkNGcvJX5QAFGzB5WJQmSv8SiQ==",
+          "dev": true,
+          "requires": {
+            "@babel/code-frame": "^7.0.0",
+            "@babel/generator": "^7.1.6",
+            "@babel/helper-function-name": "^7.1.0",
+            "@babel/helper-split-export-declaration": "^7.0.0",
+            "@babel/parser": "^7.1.6",
+            "@babel/types": "^7.1.6",
+            "debug": "^4.1.0",
+            "globals": "^11.1.0",
+            "lodash": "^4.17.10"
+          }
+        },
+        "@babel/types": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.1.6.tgz",
+          "integrity": "sha512-DMiUzlY9DSjVsOylJssxLHSgj6tWM9PRFJOGW/RaOglVOK9nzTxoOMfTfRQXGUCUQ/HmlG2efwC+XqUEJ5ay4w==",
+          "dev": true,
+          "requires": {
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.10",
+            "to-fast-properties": "^2.0.0"
+          }
+        },
+        "debug": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.0.tgz",
+          "integrity": "sha512-heNPJUJIqC+xB6ayLAMHaIrmN9HKa7aQO8MGqKpvCA+uJYVcvR6l5kgdrhRuwPFHU7P5/A1w0BjByPHwpfTDKg==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        }
       }
     },
     "@babel/generator": {
@@ -241,14 +299,72 @@
       }
     },
     "@babel/helpers": {
-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.1.2.tgz",
-      "integrity": "sha512-Myc3pUE8eswD73aWcartxB16K6CGmHDv9KxOmD2CeOs/FaEAQodr3VYGmlvOmog60vNQ2w8QbatuahepZwrHiA==",
+      "version": "7.1.5",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.1.5.tgz",
+      "integrity": "sha512-2jkcdL02ywNBry1YNFAH/fViq4fXG0vdckHqeJk+75fpQ2OH+Az6076tX/M0835zA45E0Cqa6pV5Kiv9YOqjEg==",
       "dev": true,
       "requires": {
         "@babel/template": "^7.1.2",
-        "@babel/traverse": "^7.1.0",
-        "@babel/types": "^7.1.2"
+        "@babel/traverse": "^7.1.5",
+        "@babel/types": "^7.1.5"
+      },
+      "dependencies": {
+        "@babel/generator": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.1.6.tgz",
+          "integrity": "sha512-brwPBtVvdYdGxtenbQgfCdDPmtkmUBZPjUoK5SXJEBuHaA5BCubh9ly65fzXz7R6o5rA76Rs22ES8Z+HCc0YIQ==",
+          "dev": true,
+          "requires": {
+            "@babel/types": "^7.1.6",
+            "jsesc": "^2.5.1",
+            "lodash": "^4.17.10",
+            "source-map": "^0.5.0",
+            "trim-right": "^1.0.1"
+          }
+        },
+        "@babel/parser": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.1.6.tgz",
+          "integrity": "sha512-dWP6LJm9nKT6ALaa+bnL247GHHMWir3vSlZ2+IHgHgktZQx0L3Uvq2uAWcuzIe+fujRsYWBW2q622C5UvGK9iQ==",
+          "dev": true
+        },
+        "@babel/traverse": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.1.6.tgz",
+          "integrity": "sha512-CXedit6GpISz3sC2k2FsGCUpOhUqKdyL0lqNrImQojagnUMXf8hex4AxYFRuMkNGcvJX5QAFGzB5WJQmSv8SiQ==",
+          "dev": true,
+          "requires": {
+            "@babel/code-frame": "^7.0.0",
+            "@babel/generator": "^7.1.6",
+            "@babel/helper-function-name": "^7.1.0",
+            "@babel/helper-split-export-declaration": "^7.0.0",
+            "@babel/parser": "^7.1.6",
+            "@babel/types": "^7.1.6",
+            "debug": "^4.1.0",
+            "globals": "^11.1.0",
+            "lodash": "^4.17.10"
+          }
+        },
+        "@babel/types": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.1.6.tgz",
+          "integrity": "sha512-DMiUzlY9DSjVsOylJssxLHSgj6tWM9PRFJOGW/RaOglVOK9nzTxoOMfTfRQXGUCUQ/HmlG2efwC+XqUEJ5ay4w==",
+          "dev": true,
+          "requires": {
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.10",
+            "to-fast-properties": "^2.0.0"
+          }
+        },
+        "debug": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.0.tgz",
+          "integrity": "sha512-heNPJUJIqC+xB6ayLAMHaIrmN9HKa7aQO8MGqKpvCA+uJYVcvR6l5kgdrhRuwPFHU7P5/A1w0BjByPHwpfTDKg==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        }
       }
     },
     "@babel/highlight": {
@@ -262,6 +378,21 @@
         "js-tokens": "^4.0.0"
       }
     },
+    "@babel/node": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/node/-/node-7.0.0.tgz",
+      "integrity": "sha512-mKbN8Bb1TzH9YnKMWMhBRX+o5MVJHtUSalNcsiGa4FRgVfY7ozqkbttuIDWqeXxZ3rwI9ZqmCUr9XsPV2VYlSw==",
+      "dev": true,
+      "requires": {
+        "@babel/polyfill": "^7.0.0",
+        "@babel/register": "^7.0.0",
+        "commander": "^2.8.1",
+        "fs-readdir-recursive": "^1.0.0",
+        "lodash": "^4.17.10",
+        "output-file-sync": "^2.0.0",
+        "v8flags": "^3.1.1"
+      }
+    },
     "@babel/parser": {
       "version": "7.1.3",
       "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.1.3.tgz",
@@ -386,9 +517,9 @@
       }
     },
     "@babel/plugin-transform-block-scoping": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.0.0.tgz",
-      "integrity": "sha512-GWEMCrmHQcYWISilUrk9GDqH4enf3UmhOEbNbNrlNAX1ssH3MsS1xLOS6rdjRVPgA7XXVPn87tRkdTEoA/dxEg==",
+      "version": "7.1.5",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.1.5.tgz",
+      "integrity": "sha512-jlYcDrz+5ayWC7mxgpn1Wj8zj0mmjCT2w0mPIMSwO926eXBRxpEgoN/uQVRBfjtr8ayjcmS+xk2G1jaP8JjMJQ==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0",
@@ -636,9 +767,9 @@
       }
     },
     "@babel/preset-env": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@babel/preset-env/-/preset-env-7.1.0.tgz",
-      "integrity": "sha512-ZLVSynfAoDHB/34A17/JCZbyrzbQj59QC1Anyueb4Bwjh373nVPq5/HMph0z+tCmcDjXDe+DlKQq9ywQuvWrQg==",
+      "version": "7.1.6",
+      "resolved": "https://registry.npmjs.org/@babel/preset-env/-/preset-env-7.1.6.tgz",
+      "integrity": "sha512-YIBfpJNQMBkb6MCkjz/A9J76SNCSuGVamOVBgoUkLzpJD/z8ghHi9I42LQ4pulVX68N/MmImz6ZTixt7Azgexw==",
       "dev": true,
       "requires": {
         "@babel/helper-module-imports": "^7.0.0",
@@ -654,7 +785,7 @@
         "@babel/plugin-transform-arrow-functions": "^7.0.0",
         "@babel/plugin-transform-async-to-generator": "^7.1.0",
         "@babel/plugin-transform-block-scoped-functions": "^7.0.0",
-        "@babel/plugin-transform-block-scoping": "^7.0.0",
+        "@babel/plugin-transform-block-scoping": "^7.1.5",
         "@babel/plugin-transform-classes": "^7.1.0",
         "@babel/plugin-transform-computed-properties": "^7.0.0",
         "@babel/plugin-transform-destructuring": "^7.0.0",
@@ -684,6 +815,29 @@
         "semver": "^5.3.0"
       }
     },
+    "@babel/register": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/register/-/register-7.0.0.tgz",
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@@ -9154,24 +9404,30 @@
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@@ -9202,9 +9458,9 @@
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@@ -9234,9 +9490,11 @@
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@@ -9262,7 +9520,7 @@
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@@ -9310,55 +9568,25 @@
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-          "dev": true,
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           "integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=",
           "dev": true
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+        "glob": {
+          "version": "5.0.15",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-5.0.15.tgz",
+          "integrity": "sha1-G8k2ueAvSmA/zCIuz3Yz0wuLk7E=",
+          "dev": true,
+          "requires": {
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "2 || 3",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
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           "version": "3.0.1",
           "resolved": "https://registry.npmjs.org/globby/-/globby-3.0.1.tgz",
@@ -9371,36 +9599,6 @@
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-              "resolved": "https://registry.npmjs.org/pinkie/-/pinkie-1.0.0.tgz",
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-            "pinkie-promise": {
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-              "resolved": "https://registry.npmjs.org/pinkie-promise/-/pinkie-promise-1.0.0.tgz",
-              "integrity": "sha1-0dpn9UglY7t89X8oauKCLs+/NnA=",
-              "dev": true,
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@@ -9447,6 +9645,23 @@
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           "dev": true
         },
+        "pinkie-promise": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/pinkie-promise/-/pinkie-promise-1.0.0.tgz",
+          "integrity": "sha1-0dpn9UglY7t89X8oauKCLs+/NnA=",
+          "dev": true,
+          "requires": {
+            "pinkie": "^1.0.0"
+          },
+          "dependencies": {
+            "pinkie": {
+              "version": "1.0.0",
+              "resolved": "https://registry.npmjs.org/pinkie/-/pinkie-1.0.0.tgz",
+              "integrity": "sha1-Wkfyi6EBXQIBvae/DzWOR77Ix+Q=",
+              "dev": true
+            }
+          }
+        },
         "repeating": {
           "version": "1.1.3",
           "resolved": "https://registry.npmjs.org/repeating/-/repeating-1.1.3.tgz",
@@ -9534,9 +9749,9 @@
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-      "version": "14.3.1",
-      "resolved": "https://registry.npmjs.org/testcafe-hammerhead/-/testcafe-hammerhead-14.3.1.tgz",
-      "integrity": "sha512-MFo4sd7BxqKMYo5eiUiYL6FcVRe01SR8BPTYEI1IYqaQuVJfpUMmeQie4/KOocaoRN+3MPnCkbWN5yfrASSOcQ==",
+      "version": "14.4.1",
+      "resolved": "https://registry.npmjs.org/testcafe-hammerhead/-/testcafe-hammerhead-14.4.1.tgz",
+      "integrity": "sha512-Av2+sQ29Wr1euFY5RDLudnRrS9A9rj1LnWr6zvuqcWlXTiOTuQRp9hZNpC6RZxm7eEHHvr0MYSkV9E4Jzy5ccw==",
       "dev": true,
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@@ -9730,12 +9945,12 @@
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-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.3.tgz",
-      "integrity": "sha1-AARWmzfHx0ujnEPzzteNGtlBQL4=",
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+      "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
       "dev": true,
       "requires": {
-        "readable-stream": "^2.1.5",
+        "readable-stream": "~2.3.6",
         "xtend": "~4.0.1"
       }
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@@ -9866,9 +10081,9 @@
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-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.0.tgz",
-      "integrity": "sha512-DlX6dR0lOIRDFxI0mjL9IYg6OTncLm/Zt+JiBhE5OlFcAR8yc9S7FFXU9so0oda47frdM/JFsk7UjNt9vscKcg==",
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.1.tgz",
+      "integrity": "sha512-4hjqbObwlh2dLyW4tcz0Ymw0ggoaVDMveUB9w8kFSQScdRLo0gxO9J7WFcUBo+W3C1TLdFIEwNOWebgZZ0RH9Q==",
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@@ -9878,9 +10093,9 @@
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-      "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-1.0.0.tgz",
-      "integrity": "sha1-WIeWa7WCpFA6QetST301ARgVphM=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-2.0.0.tgz",
+      "integrity": "sha1-tAPQuRvlDDMd/EuC7s6yLD3hbSA=",
       "dev": true
     },
     "trim-right": {
@@ -9964,12 +10179,6 @@
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       "dev": true
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-    "uc.micro": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.5.tgz",
-      "integrity": "sha512-JoLI4g5zv5qNyT09f4YAvEZIIV1oOjqnewYg5D38dkQljIzpPT296dbIGvKro3digYI1bkb7W6EP1y4uDlmzLg==",
-      "dev": true
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     "ultron": {
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       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
@@ -10038,9 +10247,9 @@
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-      "version": "7.0.1",
-      "resolved": "https://registry.npmjs.org/unified/-/unified-7.0.1.tgz",
-      "integrity": "sha512-8bUzPn/gVVkLgZKKjmGMjFDi7tg/y+KmGcvbzdvkIP+9q77AZvg7u1jNLKlsXr6rrOzppFWzNpduumn8jLKOsg==",
+      "version": "7.0.2",
+      "resolved": "https://registry.npmjs.org/unified/-/unified-7.0.2.tgz",
+      "integrity": "sha512-H7HiczCdNcPrqy4meJPtlJSch9+hm6GXLQ9FFLOUiFI1DIUbjvBhMKJtQ7YCaBhEPVXZwwqNyiot9xBUEtmlbg==",
       "dev": true,
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@@ -10367,6 +10576,15 @@
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       "dev": true
     },
+    "v8flags": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.1.tgz",
+      "integrity": "sha512-iw/1ViSEaff8NJ3HLyEjawk/8hjJib3E7pvG4pddVXfUg1983s3VGsiClDjhK64MQVDGqc1Q8r18S4VKQZS9EQ==",
+      "dev": true,
+      "requires": {
+        "homedir-polyfill": "^1.0.1"
+      }
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
@@ -10726,6 +10944,15 @@
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       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
       "dev": true
+    },
+    "yargs-parser": {
+      "version": "10.1.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+      "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^4.1.0"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 37b436b7..19d41d56 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "svgedit",
-  "version": "3.2.0",
+  "version": "4.0.0",
   "description": "Powerful SVG-Editor for your browser ",
   "main": "dist/index-umd.js",
   "module": "dist/index-es.js",
@@ -15,14 +15,14 @@
   "scripts": {
     "prepublishOnly": "npm run test-prep",
     "build-config": "rollup -c rollup-config.config.js",
-    "types-doc": "node jsdoc-check-overly-generic-types.js",
+    "types-doc": "npx babel-node --plugins @babel/plugin-transform-modules-commonjs jsdoc-check-overly-generic-types.js",
     "open-es-allext": "opn http://localhost:8000/editor/svg-editor-es.html?extensions=ext-arrows.js,ext-closepath.js,ext-foreignobject.js,ext-helloworld.js,ext-mathjax.js,ext-php_savefile.js,ext-server_moinsave.js,ext-server_opensave.js,ext-webappfind.js,ext-xdomain-messaging.js",
     "build-doc": "rm -rf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.js editor",
-    "build-html": "node build-html.js",
+    "build-html": "npx babel-node --plugins @babel/plugin-transform-modules-commonjs build-html.js",
     "compress-images": "imageoptim 'chrome-app/*.png' && imageoptim 'editor/extensions/*.png' && imageoptim 'editor/spinbtn/*.png' && imageoptim 'editor/jgraduate/images/*.{png,gif}' && imageoptim 'editor/images/*.png'",
     "copy": "cp node_modules/load-stylesheets/dist/index-es.js editor/external/load-stylesheets/index-es.js && cp node_modules/@babel/polyfill/dist/polyfill.min.js editor/external/@babel/polyfill/polyfill.min.js && cp node_modules/@babel/polyfill/dist/polyfill.js editor/external/@babel/polyfill/polyfill.js && cp node_modules/jamilih/dist/jml-es.js editor/external/jamilih/jml-es.js && cp node_modules/query-result/esm/index.js editor/external/query-result/esm/index.js && cp node_modules/qr-manipulation/dist/index-es.js editor/external/qr-manipulation/dist/index-es.js && cp node_modules/stackblur-canvas/dist/stackblur-es.js editor/external/stackblur-canvas/dist/stackblur-es.js",
     "remark": "remark -q -f .",
-    "eslint": "eslint --ext js,md .",
+    "eslint": "eslint --report-unused-disable-directives --ext js,md .",
     "rollup": "rollup -c",
     "start-embedded": "echo \"Open file to http://localhost:8000/editor/embedapi.html\" && static -p 8000 | static -p 8001 -H '{\"Access-Control-Allow-Origin\": \"*\"}'",
     "start": "echo \"Open file to http://localhost:8000/test/all_tests.html\" && static -p 8000",
@@ -76,16 +76,19 @@
   ],
   "dependencies": {},
   "devDependencies": {
-    "@babel/core": "^7.1.2",
+    "@babel/core": "^7.1.6",
+    "@babel/node": "^7.0.0",
+    "@babel/plugin-transform-modules-commonjs": "^7.1.0",
     "@babel/polyfill": "^7.0.0",
-    "@babel/preset-env": "^7.1.0",
+    "@babel/preset-env": "^7.1.6",
     "axe-testcafe": "^1.1.0",
     "babel-plugin-transform-object-rest-spread": "^7.0.0-beta.3",
-    "eslint": "5.8.0",
+    "eslint": "5.9.0",
+    "eslint-config-ash-nazg": "0.0.2",
     "eslint-config-standard": "12.0.0",
     "eslint-plugin-compat": "2.6.3",
     "eslint-plugin-import": "2.14.0",
-    "eslint-plugin-jsdoc": "https://github.com/brettz9/eslint-plugin-jsdoc#ArrayPatternDeploy",
+    "eslint-plugin-jsdoc": "https://github.com/brettz9/eslint-plugin-jsdoc#Deploy",
     "eslint-plugin-markdown": "^1.0.0-rc.0",
     "eslint-plugin-node": "8.0.0",
     "eslint-plugin-promise": "4.0.1",
@@ -93,19 +96,19 @@
     "eslint-plugin-standard": "4.0.0",
     "eslint-plugin-testcafe": "^0.2.1",
     "find-in-files": "^0.5.0",
-    "imageoptim-cli": "^2.0.3",
+    "imageoptim-cli": "^2.0.4",
     "jamilih": "^0.43.0",
-    "jsdoc": "https://github.com/jsdoc3/jsdoc#b21427343c7294bbf1f14c718a390f3e955e37cb",
+    "jsdoc": "^3.5.5",
     "load-stylesheets": "^0.7.0",
     "node-static": "^0.7.11",
-    "opn-cli": "^3.1.0",
+    "opn-cli": "^4.0.0",
     "promise-fs": "^2.0.1",
     "qr-manipulation": "https://github.com/brettz9/qr-manipulation",
     "query-result": "https://github.com/WebReflection/query-result",
     "qunit": "^2.8.0",
-    "remark-cli": "^6.0.0",
+    "remark-cli": "^6.0.1",
     "remark-lint-ordered-list-marker-value": "^1.0.2",
-    "rollup": "0.66.6",
+    "rollup": "0.67.1",
     "rollup-plugin-babel": "^4.0.3",
     "rollup-plugin-commonjs": "^9.2.0",
     "rollup-plugin-json": "^3.1.0",
@@ -116,6 +119,6 @@
     "sinon": "^7.1.1",
     "sinon-test": "^2.4.0",
     "stackblur-canvas": "^2.0.0",
-    "testcafe": "^0.23.0"
+    "testcafe": "^0.23.2"
   }
 }
diff --git a/svgedit-config-iife.js b/svgedit-config-iife.js
index 1adc7e6d..8331c50b 100644
--- a/svgedit-config-iife.js
+++ b/svgedit-config-iife.js
@@ -197,6 +197,12 @@
   }
 
   // http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
+
+  /**
+   *
+   * @param {Event} ev
+   * @returns {undefined}
+   */
   function touchHandler(ev) {
     var changedTouches = ev.changedTouches,
         first = changedTouches[0];
@@ -222,7 +228,8 @@
     var screenX = first.screenX,
         screenY = first.screenY,
         clientX = first.clientX,
-        clientY = first.clientY;
+        clientY = first.clientY; // eslint-disable-line no-shadow
+
     var simulatedEvent = new MouseEvent(type, {
       // Event interface
       bubbles: true,
@@ -315,6 +322,11 @@
   * including the latest spec changes which were implemented in Firefox 43 and
   * Chrome 46.
   */
+
+  /* eslint-disable no-shadow, class-methods-use-this */
+  // Linting: We avoid `no-shadow` as ESLint thinks these are still available globals
+  // Linting: We avoid `class-methods-use-this` as this is a polyfill that must
+  //   follow the conventions
   (function () {
     if (!('SVGPathSeg' in window)) {
       // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
@@ -2070,7 +2082,7 @@
               return [];
             }
 
-            var owningPathSegList = this;
+            var owningPathSegList = this; // eslint-disable-line consistent-this
 
             var Builder =
             /*#__PURE__*/
@@ -2420,6 +2432,19 @@
                       return new SVGPathSegClosePath(owningPathSegList);
 
                     case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:
+                      {
+                        var points = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x2: this._parseNumber(),
+                          y2: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
                       {
                         var _points = {
                           x1: this._parseNumber(),
@@ -2429,23 +2454,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicRel(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
+                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points.x, _points.y, _points.x1, _points.y1, _points.x2, _points.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
                       {
                         var _points2 = {
-                          x1: this._parseNumber(),
-                          y1: this._parseNumber(),
                           x2: this._parseNumber(),
                           y2: this._parseNumber(),
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicAbs(owningPathSegList, _points2.x, _points2.y, _points2.x1, _points2.y1, _points2.x2, _points2.y2);
+                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points2.x, _points2.y, _points2.x2, _points2.y2);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
+                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
                       {
                         var _points3 = {
                           x2: this._parseNumber(),
@@ -2453,21 +2476,21 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
-                      }
-
-                    case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
-                      {
-                        var _points4 = {
-                          x2: this._parseNumber(),
-                          y2: this._parseNumber(),
-                          x: this._parseNumber(),
-                          y: this._parseNumber()
-                        };
-                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points4.x, _points4.y, _points4.x2, _points4.y2);
+                        return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, _points3.x, _points3.y, _points3.x2, _points3.y2);
                       }
 
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:
+                      {
+                        var _points4 = {
+                          x1: this._parseNumber(),
+                          y1: this._parseNumber(),
+                          x: this._parseNumber(),
+                          y: this._parseNumber()
+                        };
+                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points4.x, _points4.y, _points4.x1, _points4.y1);
+                      }
+
+                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
                       {
                         var _points5 = {
                           x1: this._parseNumber(),
@@ -2475,18 +2498,9 @@
                           x: this._parseNumber(),
                           y: this._parseNumber()
                         };
-                        return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
+                        return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, _points5.x, _points5.y, _points5.x1, _points5.y1);
                       }
 
-                    case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
-                      var points = {
-                        x1: this._parseNumber(),
-                        y1: this._parseNumber(),
-                        x: this._parseNumber(),
-                        y: this._parseNumber()
-                      };
-                      return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
-
                     case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
                       return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
 
@@ -2619,13 +2633,13 @@
   var $ = jQuery;
 
   var supportsSVG_ = function () {
-    return !!document.createElementNS && !!document.createElementNS(NS.SVG, 'svg').createSVGRect;
+    return Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);
   }();
   var _navigator = navigator,
       userAgent = _navigator.userAgent;
   var svg = document.createElementNS(NS.SVG, 'svg'); // Note: Browser sniffing should only be used if no other detection method is possible
 
-  var isOpera_ = !!window.opera;
+  var isOpera_ = Boolean(window.opera);
   var isWebkit_ = userAgent.includes('AppleWebKit');
   var isGecko_ = userAgent.includes('Gecko/');
   var isIE_ = userAgent.includes('MSIE');
@@ -2635,11 +2649,11 @@
   var isTouch_ = 'ontouchstart' in window;
 
   var supportsSelectors_ = function () {
-    return !!svg.querySelector;
+    return Boolean(svg.querySelector);
   }();
 
   var supportsXpath_ = function () {
-    return !!document.evaluate;
+    return Boolean(document.evaluate);
   }(); // segList functions (for FF1.5 and 2.0)
 
 
@@ -2902,7 +2916,7 @@
   * @param {external:jQuery} $ The jQuery object to which to add the plug-in
   * @returns {external:jQuery}
   */
-  function jqPluginSVG ($) {
+  function jQueryPluginSVG($) {
     var proxied = $.fn.attr,
         svgns = 'http://www.w3.org/2000/svg';
     /**
@@ -2920,7 +2934,7 @@
       var len = this.length;
 
       if (!len) {
-        return proxied.apply(this, arguments);
+        return proxied.call(this, key, value);
       }
 
       for (var i = 0; i < len; ++i) {
@@ -2971,7 +2985,7 @@
             return _attr;
           }
         } else {
-          return proxied.apply(this, arguments);
+          return proxied.call(this, key, value);
         }
       }
 
@@ -2981,7 +2995,12 @@
     return $;
   }
 
-  var svgroot = document.createElementNS(NS.SVG, 'svg'); // Helper function.
+  var svgroot = document.createElementNS(NS.SVG, 'svg');
+  /**
+   * Helper function to convert `SVGTransform` to a string.
+   * @param {SVGTransform} xform
+   * @returns {string}
+   */
 
   function transformToString(xform) {
     var m = xform.matrix;
@@ -3105,11 +3124,14 @@
   * These methods do not currently raise any exceptions.
   * These methods also do not check that transforms are being inserted.  This is basically
   * implementing as much of SVGTransformList that we need to get the job done.
+  * @implements {module:SVGTransformList.SVGEditTransformList}
   */
 
   var SVGTransformList =
   /*#__PURE__*/
   function () {
+    // eslint-disable-line no-shadow
+
     /**
     * @param {Element} elem
     */
@@ -3180,7 +3202,7 @@
                 values.push(0, 0);
               }
 
-              xform[fname].apply(xform, values);
+              xform[fname].apply(xform, _toConsumableArray(values));
 
               _this._list.appendItem(xform);
             })();
@@ -3192,23 +3214,16 @@
         if (item) {
           // Check if this transform is already in a transformlist, and
           // remove it if so.
-          var found = false;
-
-          for (var id in listMap_) {
-            var tl = listMap_[id];
-
+          Object.values(listMap_).some(function (tl) {
             for (var i = 0, len = tl._xforms.length; i < len; ++i) {
               if (tl._xforms[i] === item) {
-                found = true;
                 tl.removeItem(i);
-                break;
+                return true;
               }
             }
 
-            if (found) {
-              break;
-            }
-          }
+            return false;
+          });
         }
       };
 
@@ -3391,6 +3406,7 @@
    */
 
   var removeElementFromListMap = function removeElementFromListMap(elem) {
+    // eslint-disable-line import/no-mutable-exports
     if (elem.id && listMap_[elem.id]) {
       delete listMap_[elem.id];
     }
@@ -3474,7 +3490,7 @@
 
   /**
    * @function module:units.ElementContainer#getElement
-   * @returns {Element} An element in the container given an id
+   * @returns {?Element} An element in the container given an id
    */
 
   /**
@@ -3571,8 +3587,7 @@
     var digits = elementContainer_.getRoundDigits();
 
     if (!isNaN(val)) {
-      // Note that + converts to Number
-      return +(+val).toFixed(digits);
+      return Number(Number(val).toFixed(digits));
     }
 
     if (Array.isArray(val)) {
@@ -3712,7 +3727,7 @@
 
       try {
         var elem = elementContainer_.getElement(val);
-        result = elem == null || elem === selectedElement;
+        result = isNullish(elem) || elem === selectedElement;
       } catch (e) {}
 
       return result;
@@ -3859,6 +3874,7 @@
     _createClass(MoveElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.MoveElementCommand';
       }
       /**
@@ -3945,6 +3961,7 @@
     _createClass(InsertElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.InsertElementCommand';
       }
       /**
@@ -4034,6 +4051,7 @@
     _createClass(RemoveElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.RemoveElementCommand';
       }
       /**
@@ -4074,9 +4092,9 @@
 
         removeElementFromListMap(this.elem);
 
-        if (this.nextSibling == null) {
+        if (isNullish(this.nextSibling)) {
           if (window.console) {
-            console.log('Error: reference element was lost');
+            console.log('Error: reference element was lost'); // eslint-disable-line no-console
           }
         }
 
@@ -4149,6 +4167,7 @@
     _createClass(ChangeElementCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.ChangeElementCommand';
       }
       /**
@@ -4161,35 +4180,38 @@
     }, {
       key: "apply",
       value: function apply(handler) {
+        var _this5 = this;
+
         if (handler) {
           handler.handleHistoryEvent(HistoryEventTypes.BEFORE_APPLY, this);
         }
 
         var bChangedTransform = false;
+        Object.entries(this.newValues).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              attr = _ref2[0],
+              value = _ref2[1];
 
-        for (var attr in this.newValues) {
-          if (this.newValues[attr]) {
+          if (value) {
             if (attr === '#text') {
-              this.elem.textContent = this.newValues[attr];
+              _this5.elem.textContent = value;
             } else if (attr === '#href') {
-              setHref(this.elem, this.newValues[attr]);
+              setHref(_this5.elem, value);
             } else {
-              this.elem.setAttribute(attr, this.newValues[attr]);
+              _this5.elem.setAttribute(attr, value);
             }
+          } else if (attr === '#text') {
+            _this5.elem.textContent = '';
           } else {
-            if (attr === '#text') {
-              this.elem.textContent = '';
-            } else {
-              this.elem.setAttribute(attr, '');
-              this.elem.removeAttribute(attr);
-            }
+            _this5.elem.setAttribute(attr, '');
+
+            _this5.elem.removeAttribute(attr);
           }
 
           if (attr === 'transform') {
             bChangedTransform = true;
           }
-        } // relocate rotational transform, if necessary
-
+        }); // relocate rotational transform, if necessary
 
         if (!bChangedTransform) {
           var angle = getRotationAngle(this.elem);
@@ -4222,34 +4244,36 @@
     }, {
       key: "unapply",
       value: function unapply(handler) {
+        var _this6 = this;
+
         if (handler) {
           handler.handleHistoryEvent(HistoryEventTypes.BEFORE_UNAPPLY, this);
         }
 
         var bChangedTransform = false;
+        Object.entries(this.oldValues).forEach(function (_ref3) {
+          var _ref4 = _slicedToArray(_ref3, 2),
+              attr = _ref4[0],
+              value = _ref4[1];
 
-        for (var attr in this.oldValues) {
-          if (this.oldValues[attr]) {
+          if (value) {
             if (attr === '#text') {
-              this.elem.textContent = this.oldValues[attr];
+              _this6.elem.textContent = value;
             } else if (attr === '#href') {
-              setHref(this.elem, this.oldValues[attr]);
+              setHref(_this6.elem, value);
             } else {
-              this.elem.setAttribute(attr, this.oldValues[attr]);
+              _this6.elem.setAttribute(attr, value);
             }
+          } else if (attr === '#text') {
+            _this6.elem.textContent = '';
           } else {
-            if (attr === '#text') {
-              this.elem.textContent = '';
-            } else {
-              this.elem.removeAttribute(attr);
-            }
+            _this6.elem.removeAttribute(attr);
           }
 
           if (attr === 'transform') {
             bChangedTransform = true;
           }
-        } // relocate rotational transform, if necessary
-
+        }); // relocate rotational transform, if necessary
 
         if (!bChangedTransform) {
           var angle = getRotationAngle(this.elem);
@@ -4306,19 +4330,20 @@
     * @param {string} [text] - An optional string visible to user related to this change
     */
     function BatchCommand(text) {
-      var _this5;
+      var _this7;
 
       _classCallCheck(this, BatchCommand);
 
-      _this5 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
-      _this5.text = text || 'Batch Command';
-      _this5.stack = [];
-      return _this5;
+      _this7 = _possibleConstructorReturn(this, _getPrototypeOf(BatchCommand).call(this));
+      _this7.text = text || 'Batch Command';
+      _this7.stack = [];
+      return _this7;
     }
 
     _createClass(BatchCommand, [{
       key: "type",
       value: function type() {
+        // eslint-disable-line class-methods-use-this
         return 'svgedit.history.BatchCommand';
       }
       /**
@@ -4555,7 +4580,7 @@
         while (i--) {
           var elem = elems[i];
 
-          if (elem == null) {
+          if (isNullish(elem)) {
             continue;
           }
 
@@ -4588,7 +4613,7 @@
         while (i--) {
           var elem = changeset.elements[i];
 
-          if (elem == null) {
+          if (isNullish(elem)) {
             continue;
           }
 
@@ -4608,7 +4633,7 @@
     return UndoManager;
   }();
 
-  var history = /*#__PURE__*/Object.freeze({
+  var hstry = /*#__PURE__*/Object.freeze({
     HistoryEventTypes: HistoryEventTypes,
     MoveElementCommand: MoveElementCommand,
     InsertElementCommand: InsertElementCommand,
@@ -4776,15 +4801,15 @@
   */
 
   var transformListToTransform = function transformListToTransform(tlist, min, max) {
-    if (tlist == null) {
+    if (isNullish(tlist)) {
       // Or should tlist = null have been prevented before this?
       return svg$1.createSVGTransformFromMatrix(svg$1.createSVGMatrix());
     }
 
     min = min || 0;
     max = max || tlist.numberOfItems - 1;
-    min = parseInt(min, 10);
-    max = parseInt(max, 10);
+    min = parseInt(min);
+    max = parseInt(max);
 
     if (min > max) {
       var temp = max;
@@ -4907,7 +4932,8 @@
    * @memberof module:path
   */
 
-  var path = null;
+  var path = null; // eslint-disable-line import/no-mutable-exports
+
   var editorContext_ = null;
   /**
   * @external MouseEvent
@@ -5159,14 +5185,14 @@
   */
 
   var getGripPt = function getGripPt(seg, altPt) {
-    var path = seg.path;
+    var pth = seg.path;
     var out = {
       x: altPt ? altPt.x : seg.item.x,
       y: altPt ? altPt.y : seg.item.y
     };
 
-    if (path.matrix) {
-      var pt = transformPoint(out.x, out.y, path.matrix);
+    if (pth.matrix) {
+      var pt = transformPoint(out.x, out.y, pth.matrix);
       out = pt;
     }
 
@@ -5178,18 +5204,18 @@
   /**
   * @function module:path.getPointFromGrip
   * @param {module:math.XYObject} pt
-  * @param {module:path.Path} path
+  * @param {module:path.Path} pth
   * @returns {module:math.XYObject}
   */
 
-  var getPointFromGrip = function getPointFromGrip(pt, path) {
+  var getPointFromGrip = function getPointFromGrip(pt, pth) {
     var out = {
       x: pt.x,
       y: pt.y
     };
 
-    if (path.matrix) {
-      pt = transformPoint(out.x, out.y, path.imatrix);
+    if (pth.matrix) {
+      pt = transformPoint(out.x, out.y, pth.imatrix);
       out.x = pt.x;
       out.y = pt.y;
     }
@@ -5262,8 +5288,8 @@
     var c = getElem('pathpointgrip_container');
 
     if (!c) {
-      var parent = getElem('selectorParentGroup');
-      c = parent.appendChild(document.createElementNS(NS.SVG, 'g'));
+      var parentElement = getElem('selectorParentGroup');
+      c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));
       c.id = 'pathpointgrip_container';
     }
 
@@ -5416,7 +5442,7 @@
   var replacePathSeg = function replacePathSeg(type, index, pts, elem) {
     var pth = elem || path.elem;
     var func = 'createSVGPathSeg' + pathFuncs[type];
-    var seg = pth[func].apply(pth, pts);
+    var seg = pth[func].apply(pth, _toConsumableArray(pts));
 
     if (supportsPathReplaceItem()) {
       pth.pathSegList.replaceItem(seg, index);
@@ -5482,13 +5508,12 @@
       var pts = ptObjToArr(seg.type, seg.item); // , true);
 
       for (var i = 0; i < pts.length; i += 2) {
-        var _pt = getGripPt(seg, {
+        var point = getGripPt(seg, {
           x: pts[i],
           y: pts[i + 1]
         });
-
-        pts[i] = _pt.x;
-        pts[i + 1] = _pt.y;
+        pts[i] = point.x;
+        pts[i + 1] = point.y;
       }
 
       replacePathSeg(seg.type, 1, pts, segLine);
@@ -5589,7 +5614,7 @@
       key: "showCtrlPts",
       value: function showCtrlPts(y) {
         for (var i in this.ctrlpts) {
-          if (this.ctrlpts.hasOwnProperty(i)) {
+          if ({}.hasOwnProperty.call(this.ctrlpts, i)) {
             this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');
           }
         }
@@ -5699,8 +5724,8 @@
         if (this.mate) {
           // The last point of a closed subpath has a 'mate',
           // which is the 'M' segment of the subpath
-          var _item = this.mate.item;
-          var pts = [_item.x += dx, _item.y += dy];
+          var itm = this.mate.item;
+          var pts = [itm.x += dx, itm.y += dy];
           replacePathSeg(this.mate.type, this.mate.index, pts); // Has no grip, so does not need 'updating'?
         }
 
@@ -5806,7 +5831,8 @@
       this.elem = elem;
       this.segs = [];
       this.selected_pts = [];
-      path = this;
+      path = this; // eslint-disable-line consistent-this
+
       this.init();
     }
     /**
@@ -5865,7 +5891,7 @@
             seg.mate = segs[startI];
             seg.addGrip();
 
-            if (this.first_seg == null) {
+            if (isNullish(this.first_seg)) {
               this.first_seg = seg;
             }
           } else if (!nextSeg) {
@@ -5902,7 +5928,7 @@
       * @callback module:path.PathEachSegCallback
       * @this module:path.Segment
       * @param {Integer} i The index of the seg being iterated
-      * @returns {boolean} Will stop execution of `eachSeg` if returns `false`
+      * @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`
       */
 
       /**
@@ -5998,8 +6024,8 @@
         } else if (!seg.prev) {
           // First node of open path, make next point the M
           // const {item} = seg;
-          var _pt2 = [next.item.x, next.item.y];
-          replacePathSeg(2, seg.next.index, _pt2);
+          var _pt = [next.item.x, next.item.y];
+          replacePathSeg(2, seg.next.index, _pt);
           list.removeItem(index);
         } else {
           list.removeItem(index);
@@ -6007,34 +6033,6 @@
       }
       /**
       * @param {Integer} index
-      * @returns {boolean}
-      */
-
-    }, {
-      key: "subpathIsClosed",
-      value: function subpathIsClosed(index) {
-        var closed = false; // Check if subpath is already open
-
-        path.eachSeg(function (i) {
-          if (i <= index) {
-            return true;
-          }
-
-          if (this.type === 2) {
-            // Found M first, so open
-            return false;
-          }
-
-          if (this.type === 1) {
-            // Found Z first, so closed
-            closed = true;
-            return false;
-          }
-        });
-        return closed;
-      }
-      /**
-      * @param {Integer} index
       * @returns {undefined}
       */
 
@@ -6215,7 +6213,7 @@
       value: function selectPt(pt, ctrlNum) {
         this.clearSelection();
 
-        if (pt == null) {
+        if (isNullish(pt)) {
           this.eachSeg(function (i) {
             // 'this' is the segment here.
             if (this.prev) {
@@ -6315,7 +6313,7 @@
           grips[i] = _seg2.ptgrip;
         }
 
-        var closedSubpath = this.subpathIsClosed(this.selected_pts[0]);
+        var closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);
         editorContext_.addPtsToSelection({
           grips: grips,
           closedSubpath: closedSubpath
@@ -6326,11 +6324,40 @@
     return Path;
   }();
   /**
+  * @param {Integer} index
+  * @returns {boolean}
+  */
+
+  Path.subpathIsClosed = function (index) {
+    var clsd = false; // Check if subpath is already open
+
+    path.eachSeg(function (i) {
+      if (i <= index) {
+        return true;
+      }
+
+      if (this.type === 2) {
+        // Found M first, so open
+        return false;
+      }
+
+      if (this.type === 1) {
+        // Found Z first, so closed
+        clsd = true;
+        return false;
+      }
+
+      return true;
+    });
+    return clsd;
+  };
+  /**
   * @function module:path.getPath_
   * @param {SVGPathElement} elem
   * @returns {module:path.Path}
   */
 
+
   var getPath_ = function getPath_(elem) {
     var p = pathData[elem.id];
 
@@ -6423,7 +6450,7 @@
       var rvals = getRotVals(seg.x, seg.y),
           points = [rvals.x, rvals.y];
 
-      if (seg.x1 != null && seg.x2 != null) {
+      if (!isNullish(seg.x1) && !isNullish(seg.x2)) {
         var cVals1 = getRotVals(seg.x1, seg.y1);
         var cVals2 = getRotVals(seg.x2, seg.y2);
         points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);
@@ -6511,21 +6538,21 @@
    * Convert a path to one with only absolute or relative values.
    * @todo move to pathActions.js
    * @function module:path.convertPath
-   * @param {SVGPathElement} path - the path to convert
+   * @param {SVGPathElement} pth - the path to convert
    * @param {boolean} toRel - true of convert to relative
    * @returns {string}
    */
 
-  var convertPath = function convertPath(path, toRel) {
-    var segList = path.pathSegList;
-    var len = segList.numberOfItems;
+  var convertPath = function convertPath(pth, toRel) {
+    var pathSegList = pth.pathSegList;
+    var len = pathSegList.numberOfItems;
     var curx = 0,
         cury = 0;
     var d = '';
     var lastM = null;
 
     for (var i = 0; i < len; ++i) {
-      var seg = segList.getItem(i); // if these properties are not in the segment, set them to zero
+      var seg = pathSegList.getItem(i); // if these properties are not in the segment, set them to zero
 
       var x = seg.x || 0,
           y = seg.y || 0,
@@ -6858,7 +6885,7 @@
         * @param {Element} mouseTarget
         * @param {Float} startX
         * @param {Float} startY
-        * @returns {undefined}
+        * @returns {boolean|undefined}
         */
         mouseDown: function mouseDown(evt, mouseTarget, startX, startY) {
           var id;
@@ -7002,7 +7029,7 @@
                 // Checks if current target or parents are #svgcontent
                 if (!$$1.contains(editorContext_.getContainer(), editorContext_.getMouseTarget(evt))) {
                   // Clicked outside canvas, so don't make point
-                  console.log('Clicked outside canvas');
+                  // console.log('Clicked outside canvas');
                   return false;
                 }
 
@@ -7042,12 +7069,12 @@
 
             }
 
-            return;
+            return undefined;
           } // TODO: Make sure currentPath isn't null at this point
 
 
           if (!path) {
-            return;
+            return undefined;
           }
 
           path.storeD();
@@ -7056,7 +7083,7 @@
 
           if (id.substr(0, 14) === 'pathpointgrip_') {
             // Select this point
-            curPt = path.cur_pt = parseInt(id.substr(14), 10);
+            curPt = path.cur_pt = parseInt(id.substr(14));
             path.dragging = [startX, startY];
             var seg = path.segs[curPt]; // only clear selection if shift is not pressed (otherwise, add
             // node to selection)
@@ -7084,7 +7111,7 @@
           if (!path.dragging) {
             var rubberBox = editorContext_.getRubberBox();
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = editorContext_.setRubberBox(editorContext_.selectorManager.getRubberBandBox());
             }
 
@@ -7098,6 +7125,8 @@
               display: 'inline'
             }, 100);
           }
+
+          return undefined;
         },
 
         /**
@@ -7208,7 +7237,7 @@
           } else {
             path.selected_pts = [];
             path.eachSeg(function (i) {
-              var seg = this;
+              var seg = this; // eslint-disable-line consistent-this
 
               if (!seg.next && !seg.prev) {
                 return;
@@ -7234,12 +7263,19 @@
           }
         },
 
+        /**
+         * @typedef module:path.keepElement
+         * @type {PlainObject}
+         * @property {boolean} keep
+         * @property {Element} element
+         */
+
         /**
         * @param {Event} evt
         * @param {Element} element
         * @param {Float} mouseX
         * @param {Float} mouseY
-        * @returns {undefined}
+        * @returns {module:path.keepElement|undefined}
         */
         mouseUp: function mouseUp(evt, element, mouseX, mouseY) {
           var drawnPath = editorContext_.getDrawnPath(); // Create mode
@@ -7288,6 +7324,7 @@
           }
 
           hasMoved = false;
+          return undefined;
         },
 
         /**
@@ -7366,9 +7403,9 @@
             return;
           }
 
-          var angle = getRotationAngle(elem);
+          var angl = getRotationAngle(elem);
 
-          if (angle === 0) {
+          if (angl === 0) {
             return;
           }
 
@@ -7418,7 +7455,7 @@
         * @returns {false|undefined}
         */
         resetOrientation: function resetOrientation(pth) {
-          if (pth == null || pth.nodeName !== 'path') {
+          if (isNullish(pth) || pth.nodeName !== 'path') {
             return false;
           }
 
@@ -7467,6 +7504,7 @@
           }
 
           reorientGrads(pth, m);
+          return undefined;
         },
 
         /**
@@ -7565,9 +7603,11 @@
               openPt = false;
               return false;
             }
+
+            return true;
           });
 
-          if (openPt == null) {
+          if (isNullish(openPt)) {
             // Single path, so close last seg
             openPt = path.segs.length - 1;
           }
@@ -7815,7 +7855,7 @@
     );
   }(); // end pathActions
 
-  var $$2 = jqPluginSVG(jQuery); // String used to encode base64.
+  var $$2 = jQueryPluginSVG(jQuery); // String used to encode base64.
 
   var KEYSTR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; // Much faster than running getBBox() every time
 
@@ -7935,7 +7975,7 @@
   * @returns {string} Base64 output
   */
 
-  var encode64 = function encode64(input) {
+  function encode64(input) {
     // base64 strings are 4/3 larger than the original string
     input = encodeUTF8(input); // convert non-ASCII characters
     // input = convertToXMLReferences(input);
@@ -7944,8 +7984,7 @@
       return window.btoa(input); // Use native if available
     }
 
-    var output = [];
-    output.length = Math.floor((input.length + 2) / 3) * 4;
+    var output = new Array(Math.floor((input.length + 2) / 3) * 4);
     var i = 0,
         p = 0;
 
@@ -7953,13 +7992,17 @@
       var chr1 = input.charCodeAt(i++);
       var chr2 = input.charCodeAt(i++);
       var chr3 = input.charCodeAt(i++);
+      /* eslint-disable no-bitwise */
+
       var enc1 = chr1 >> 2;
       var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
       var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
       var enc4 = chr3 & 63;
+      /* eslint-enable no-bitwise */
 
       if (isNaN(chr2)) {
-        enc3 = enc4 = 64;
+        enc3 = 64;
+        enc4 = 64;
       } else if (isNaN(chr3)) {
         enc4 = 64;
       }
@@ -7971,7 +8014,7 @@
     } while (i < input.length);
 
     return output.join('');
-  };
+  }
   /**
   * Converts a string from base64.
   * @function module:utilities.decode64
@@ -7979,7 +8022,7 @@
   * @returns {string} Decoded output
   */
 
-  var decode64 = function decode64(input) {
+  function decode64(input) {
     if (window.atob) {
       return decodeUTF8(window.atob(input));
     } // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
@@ -7994,31 +8037,35 @@
       var enc2 = KEYSTR.indexOf(input.charAt(i++));
       var enc3 = KEYSTR.indexOf(input.charAt(i++));
       var enc4 = KEYSTR.indexOf(input.charAt(i++));
+      /* eslint-disable no-bitwise */
+
       var chr1 = enc1 << 2 | enc2 >> 4;
       var chr2 = (enc2 & 15) << 4 | enc3 >> 2;
       var chr3 = (enc3 & 3) << 6 | enc4;
+      /* eslint-enable no-bitwise */
+
       output += String.fromCharCode(chr1);
 
       if (enc3 !== 64) {
-        output = output + String.fromCharCode(chr2);
+        output += String.fromCharCode(chr2);
       }
 
       if (enc4 !== 64) {
-        output = output + String.fromCharCode(chr3);
+        output += String.fromCharCode(chr3);
       }
     } while (i < input.length);
 
     return decodeUTF8(output);
-  };
+  }
   /**
   * @function module:utilities.decodeUTF8
   * @param {string} argString
   * @returns {string}
   */
 
-  var decodeUTF8 = function decodeUTF8(argString) {
+  function decodeUTF8(argString) {
     return decodeURIComponent(escape(argString));
-  }; // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
+  } // codedread:does not seem to work with webkit-based browsers on OSX // Brettz9: please test again as function upgraded
 
   /**
   * @function module:utilities.encodeUTF8
@@ -8227,6 +8274,7 @@
   */
 
   var getHref = function getHref(elem) {
+    // eslint-disable-line import/no-mutable-exports
     return elem.getAttributeNS(NS.XLINK, 'href');
   };
   /**
@@ -8238,6 +8286,7 @@
   */
 
   var setHref = function setHref(elem, val) {
+    // eslint-disable-line import/no-mutable-exports
     elem.setAttributeNS(NS.XLINK, 'xlink:href', val);
   };
   /**
@@ -8280,6 +8329,12 @@
     var start = seglist.getItem(0);
     var P0 = [start.x, start.y];
 
+    var getCalc = function getCalc(j, P1, P2, P3) {
+      return function (t) {
+        return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
+      };
+    };
+
     for (var i = 0; i < tot; i++) {
       var seg = seglist.getItem(i);
 
@@ -8292,61 +8347,50 @@
       bounds[1].push(P0[1]);
 
       if (seg.x1) {
-        (function () {
-          var P1 = [seg.x1, seg.y1],
-              P2 = [seg.x2, seg.y2],
-              P3 = [seg.x, seg.y];
+        var P1 = [seg.x1, seg.y1],
+            P2 = [seg.x2, seg.y2],
+            P3 = [seg.x, seg.y];
 
-          var _loop = function _loop(j) {
-            var calc = function calc(t) {
-              return Math.pow(1 - t, 3) * P0[j] + 3 * Math.pow(1 - t, 2) * t * P1[j] + 3 * (1 - t) * Math.pow(t, 2) * P2[j] + Math.pow(t, 3) * P3[j];
-            };
+        for (var j = 0; j < 2; j++) {
+          var calc = getCalc(j, P1, P2, P3);
+          var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
+          var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
+          var c = 3 * P1[j] - 3 * P0[j];
 
-            var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
-            var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
-            var c = 3 * P1[j] - 3 * P0[j];
-
-            if (a === 0) {
-              if (b === 0) {
-                return "continue";
-              }
-
-              var t = -c / b;
-
-              if (t > 0 && t < 1) {
-                bounds[j].push(calc(t));
-              }
-
-              return "continue";
+          if (a === 0) {
+            if (b === 0) {
+              continue;
             }
 
-            var b2ac = Math.pow(b, 2) - 4 * c * a;
+            var t = -c / b;
 
-            if (b2ac < 0) {
-              return "continue";
+            if (t > 0 && t < 1) {
+              bounds[j].push(calc(t));
             }
 
-            var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
-
-            if (t1 > 0 && t1 < 1) {
-              bounds[j].push(calc(t1));
-            }
-
-            var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
-
-            if (t2 > 0 && t2 < 1) {
-              bounds[j].push(calc(t2));
-            }
-          };
-
-          for (var j = 0; j < 2; j++) {
-            var _ret = _loop(j);
-
-            if (_ret === "continue") continue;
+            continue;
           }
 
-          P0 = P3;
-        })();
+          var b2ac = Math.pow(b, 2) - 4 * c * a;
+
+          if (b2ac < 0) {
+            continue;
+          }
+
+          var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
+
+          if (t1 > 0 && t1 < 1) {
+            bounds[j].push(calc(t1));
+          }
+
+          var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
+
+          if (t2 > 0 && t2 < 1) {
+            bounds[j].push(calc(t2));
+          }
+        }
+
+        P0 = P3;
       } else {
         bounds[0].push(seg.x);
         bounds[1].push(seg.y);
@@ -8445,10 +8489,8 @@
 
           ret = selected.getBBox();
           selected.textContent = '';
-        } else {
-          if (selected.getBBox) {
-            ret = selected.getBBox();
-          }
+        } else if (selected.getBBox) {
+          ret = selected.getBBox();
         }
 
         break;
@@ -8456,10 +8498,8 @@
       case 'path':
         if (!supportsPathBBox()) {
           ret = getPathBBox(selected);
-        } else {
-          if (selected.getBBox) {
-            ret = selected.getBBox();
-          }
+        } else if (selected.getBBox) {
+          ret = selected.getBBox();
         }
 
         break;
@@ -8574,21 +8614,24 @@
     switch (elem.tagName) {
       case 'ellipse':
       case 'circle':
-        a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
-        var _a = a,
-            cx = _a.cx,
-            cy = _a.cy;
-        var _a2 = a;
-        rx = _a2.rx;
-        ry = _a2.ry;
+        {
+          a = $$2(elem).attr(['rx', 'ry', 'cx', 'cy']);
+          var _a = a,
+              cx = _a.cx,
+              cy = _a.cy;
+          var _a2 = a;
+          rx = _a2.rx;
+          ry = _a2.ry;
 
-        if (elem.tagName === 'circle') {
-          rx = ry = $$2(elem).attr('r');
+          if (elem.tagName === 'circle') {
+            ry = $$2(elem).attr('r');
+            rx = ry;
+          }
+
+          d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
+          break;
         }
 
-        d = getPathDFromSegments([['M', [cx - rx, cy]], ['C', [cx - rx, cy - ry / num, cx - rx / num, cy - ry, cx, cy - ry]], ['C', [cx + rx / num, cy - ry, cx + rx, cy - ry / num, cx + rx, cy]], ['C', [cx + rx, cy + ry / num, cx + rx / num, cy + ry, cx, cy + ry]], ['C', [cx - rx / num, cy + ry, cx - rx, cy + ry / num, cx - rx, cy]], ['Z', []]]);
-        break;
-
       case 'path':
         d = elem.getAttribute('d');
         break;
@@ -8607,25 +8650,27 @@
         break;
 
       case 'rect':
-        var r = $$2(elem).attr(['rx', 'ry']);
-        rx = r.rx;
-        ry = r.ry;
-        var b = elem.getBBox();
-        var x = b.x,
-            y = b.y,
-            w = b.width,
-            h = b.height;
-        num = 4 - num; // Why? Because!
+        {
+          var r = $$2(elem).attr(['rx', 'ry']);
+          rx = r.rx;
+          ry = r.ry;
+          var b = elem.getBBox();
+          var x = b.x,
+              y = b.y,
+              w = b.width,
+              h = b.height;
+          num = 4 - num; // Why? Because!
 
-        if (!rx && !ry) {
-          // Regular rect
-          d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
-        } else {
-          d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+          if (!rx && !ry) {
+            // Regular rect
+            d = getPathDFromSegments([['M', [x, y]], ['L', [x + w, y]], ['L', [x + w, y + h]], ['L', [x, y + h]], ['L', [x, y]], ['Z', []]]);
+          } else {
+            d = getPathDFromSegments([['M', [x, y + ry]], ['C', [x, y + ry / num, x + rx / num, y, x + rx, y]], ['L', [x + w - rx, y]], ['C', [x + w - rx / num, y, x + w, y + ry / num, x + w, y + ry]], ['L', [x + w, y + h - ry]], ['C', [x + w, y + h - ry / num, x + w - rx / num, y + h, x + w - rx, y + h]], ['L', [x + rx, y + h]], ['C', [x + rx / num, y + h, x, y + h - ry / num, x, y + h - ry]], ['L', [x, y + ry]], ['Z', []]]);
+          }
+
+          break;
         }
 
-        break;
-
       default:
         break;
     }
@@ -8672,12 +8717,12 @@
       path$$1.setAttribute('transform', eltrans);
     }
 
-    var parent = elem.parentNode;
+    var parentNode = elem.parentNode;
 
     if (elem.nextSibling) {
       elem.before(path$$1);
     } else {
-      parent.append(path$$1);
+      parentNode.append(path$$1);
     }
 
     var d = getPathDFromElement(elem);
@@ -8709,13 +8754,13 @@
   * @param {module:path.pathActions} pathActions - If a transform exists, pathActions.resetOrientation() is used. See: canvas.pathActions.
   * @param {module:draw.DrawCanvasInit#clearSelection|module:path.EditorContext#clearSelection} clearSelection - see [canvas.clearSelection]{@link module:svgcanvas.SvgCanvas#clearSelection}
   * @param {module:path.EditorContext#addToSelection} addToSelection - see [canvas.addToSelection]{@link module:svgcanvas.SvgCanvas#addToSelection}
-  * @param {module:history} history - see history module
+  * @param {module:history} hstry - see history module
   * @param {module:path.EditorContext#addCommandToHistory|module:draw.DrawCanvasInit#addCommandToHistory} addCommandToHistory - see [canvas.addCommandToHistory]{@link module:svgcanvas~addCommandToHistory}
   * @returns {SVGPathElement|null} The converted path element or null if the DOM element was not recognized.
   */
 
-  var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory) {
-    var batchCmd = new history.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
+  var convertToPath = function convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory) {
+    var batchCmd = new hstry.BatchCommand('Convert element to Path'); // Any attribute on the element not covered by the passed-in attributes
 
     attrs = $$2.extend({}, attrs, getExtraAttributesForConvertToPath(elem));
     var path$$1 = addSVGElementFromJson({
@@ -8729,12 +8774,12 @@
     }
 
     var id = elem.id;
-    var parent = elem.parentNode;
+    var parentNode = elem.parentNode;
 
     if (elem.nextSibling) {
       elem.before(path$$1);
     } else {
-      parent.append(path$$1);
+      parentNode.append(path$$1);
     }
 
     var d = getPathDFromElement(elem);
@@ -8752,8 +8797,8 @@
       }
 
       var nextSibling = elem.nextSibling;
-      batchCmd.addSubCommand(new history.RemoveElementCommand(elem, nextSibling, parent));
-      batchCmd.addSubCommand(new history.InsertElementCommand(path$$1));
+      batchCmd.addSubCommand(new hstry.RemoveElementCommand(elem, nextSibling, parent));
+      batchCmd.addSubCommand(new hstry.InsertElementCommand(path$$1));
       clearSelection();
       elem.remove();
       path$$1.setAttribute('id', id);
@@ -8784,15 +8829,15 @@
   * getBBox then apply the angle and any transforms.
   *
   * @param {Float} angle - The rotation angle in degrees
-  * @param {boolean} hasMatrixTransform - True if there is a matrix transform
+  * @param {boolean} hasAMatrixTransform - True if there is a matrix transform
   * @returns {boolean} True if the bbox can be optimized.
   */
 
-  function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasMatrixTransform$$1) {
+  function bBoxCanBeOptimizedOverNativeGetBBox(angle, hasAMatrixTransform) {
     var angleModulo90 = angle % 90;
     var closeTo90 = angleModulo90 < -89.99 || angleModulo90 > 89.99;
     var closeTo0 = angleModulo90 > -0.001 && angleModulo90 < 0.001;
-    return hasMatrixTransform$$1 || !(closeTo0 || closeTo90);
+    return hasAMatrixTransform || !(closeTo0 || closeTo90);
   }
   /**
   * Get bounding box that includes any transforms.
@@ -8827,14 +8872,16 @@
         var elemNames = ['ellipse', 'path', 'line', 'polyline', 'polygon'];
 
         if (elemNames.includes(elem.tagName)) {
-          bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+          bb = goodBb;
         } else if (elem.tagName === 'rect') {
           // Look for radius
           var rx = elem.getAttribute('rx');
           var ry = elem.getAttribute('ry');
 
           if (rx || ry) {
-            bb = goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+            goodBb = getBBoxOfElementAsPath(elem, addSVGElementFromJson, pathActions$$1);
+            bb = goodBb;
           }
         }
       }
@@ -8860,7 +8907,13 @@
     }
 
     return bb;
-  }; // TODO: This is problematic with large stroke-width and, for example, a single horizontal line. The calculated BBox extends way beyond left and right sides.
+  };
+  /**
+   * @param {Element} elem
+   * @returns {Float}
+   * @todo This is problematic with large stroke-width and, for example, a single
+   * horizontal line. The calculated BBox extends way beyond left and right sides.
+   */
 
   function getStrokeOffsetForBBox(elem) {
     var sw = elem.getAttribute('stroke-width');
@@ -8948,17 +9001,17 @@
   * Note that 0-opacity, off-screen etc elements are still considered "visible"
   * for this function.
   * @function module:utilities.getVisibleElements
-  * @param {Element} parent - The parent DOM element to search within
+  * @param {Element} parentElement - The parent DOM element to search within
   * @returns {Element[]} All "visible" elements.
   */
 
-  var getVisibleElements = function getVisibleElements(parent) {
-    if (!parent) {
-      parent = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
+  var getVisibleElements = function getVisibleElements(parentElement) {
+    if (!parentElement) {
+      parentElement = $$2(editorContext_$1.getSVGContent()).children(); // Prevent layers from being included
     }
 
     var contentElems = [];
-    $$2(parent).children().each(function (i, elem) {
+    $$2(parentElement).children().each(function (i, elem) {
       if (elem.getBBox) {
         contentElems.push(elem);
       }
@@ -9014,6 +9067,7 @@
   */
 
   var getRotationAngle = function getRotationAngle(elem, toRad) {
+    // eslint-disable-line import/no-mutable-exports
     var selected = elem || editorContext_$1.getSelectedElements()[0]; // find the rotation transform (if any) and set it
 
     var tlist = getTransformList(selected);
@@ -9033,7 +9087,7 @@
   * Get a DOM element by ID within the SVG root element.
   * @function module:utilities.getElem
   * @param {string} id - String with the element's new ID
-  * @returns {Element}
+  * @returns {?Element}
   */
 
   var getElem = supportsSelectors() ? function (id) {
@@ -9105,13 +9159,15 @@
       delete defaults.ry;
     }
 
-    for (var attr in defaults) {
-      var val = defaults[attr];
+    Object.entries(defaults).forEach(function (_ref4) {
+      var _ref5 = _slicedToArray(_ref4, 2),
+          attr = _ref5[0],
+          val = _ref5[1];
 
       if (element.getAttribute(attr) === String(val)) {
         element.removeAttribute(attr);
       }
-    }
+    });
   };
   /**
   * Round value to for snapping.
@@ -9214,6 +9270,15 @@
 
     return newEl;
   };
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+  var isNullish = function isNullish(val) {
+    return val === null || val === undefined;
+  };
 
   /* globals jQuery */
 
@@ -9267,9 +9332,9 @@
 
 
   var injectExtendedContextMenuItemsIntoDom = function injectExtendedContextMenuItemsIntoDom() {
-    for (var menuItem in contextMenuExtensions) {
-      injectExtendedContextMenuItemIntoDom(contextMenuExtensions[menuItem]);
-    }
+    Object.values(contextMenuExtensions).forEach(function (menuItem) {
+      injectExtendedContextMenuItemIntoDom(menuItem);
+    });
   };
 
   // MIT License
@@ -9278,12 +9343,25 @@
   /**
    * @module importModule
    */
+
+  /**
+   * Converts a possible relative URL into an absolute one.
+   * @param {string} url
+   * @returns {string}
+   */
   function toAbsoluteURL(url) {
     var a = document.createElement('a');
     a.setAttribute('href', url); // <a href="hoge.html">
 
     return a.cloneNode(false).href; // -> "http://example.com/hoge.html"
   }
+  /**
+   * Add any of the whitelisted attributes to the script tag.
+   * @param {HTMLScriptElement} script
+   * @param {PlainObject.<string, string>} atts
+   * @returns {undefined}
+   */
+
 
   function addScriptAtts(script, atts) {
     ['id', 'class', 'type'].forEach(function (prop) {
@@ -9301,84 +9379,73 @@
 
   /**
   * @function module:importModule.importSetGlobalDefault
-  * @param {string} url
+  * @param {string|string[]} url
   * @param {module:importModule.ImportConfig} config
-  * @returns {*} The return depends on the export of the targeted module.
+  * @returns {Promise} The value to which it resolves depends on the export of the targeted module.
   */
 
 
-  function importSetGlobalDefault(_x, _x2) {
-    return _importSetGlobalDefault.apply(this, arguments);
+  function importSetGlobalDefault(url, config) {
+    return importSetGlobal(url, _extends({}, config, {
+      returnDefault: true
+    }));
   }
   /**
   * @function module:importModule.importSetGlobal
-  * @param {string} url
+  * @param {string|string[]} url
   * @param {module:importModule.ImportConfig} config
-  * @returns {ArbitraryModule|*} The return depends on the export of the targeted module.
+  * @returns {Promise} The promise resolves to either an `ArbitraryModule` or
+  *   any other value depends on the export of the targeted module.
   */
 
-  function _importSetGlobalDefault() {
-    _importSetGlobalDefault = _asyncToGenerator(
+  function importSetGlobal(_x, _x2) {
+    return _importSetGlobal.apply(this, arguments);
+  }
+  /**
+   *
+   * @author Brett Zamir (other items are from `dynamic-import-polyfill`)
+   * @param {string|string[]} url
+   * @param {PlainObject} [atts={}]
+   * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a
+   *   script loading error
+   */
+
+  function _importSetGlobal() {
+    _importSetGlobal = _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee(url, config) {
+    regeneratorRuntime.mark(function _callee(url, _ref) {
+      var glob, returnDefault, modularVersion;
       return regeneratorRuntime.wrap(function _callee$(_context) {
         while (1) {
           switch (_context.prev = _context.next) {
             case 0:
-              return _context.abrupt("return", importSetGlobal(url, _extends({}, config, {
-                returnDefault: true
-              })));
+              glob = _ref.global, returnDefault = _ref.returnDefault;
+              // Todo: Replace calls to this function with `import()` when supported
+              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
 
-            case 1:
+              if (!modularVersion) {
+                _context.next = 4;
+                break;
+              }
+
+              return _context.abrupt("return", importModule(url, undefined, {
+                returnDefault: returnDefault
+              }));
+
+            case 4:
+              _context.next = 6;
+              return importScript(url);
+
+            case 6:
+              return _context.abrupt("return", window[glob]);
+
+            case 7:
             case "end":
               return _context.stop();
           }
         }
       }, _callee, this);
     }));
-    return _importSetGlobalDefault.apply(this, arguments);
-  }
-
-  function importSetGlobal(_x3, _x4) {
-    return _importSetGlobal.apply(this, arguments);
-  } // Addition by Brett
-
-  function _importSetGlobal() {
-    _importSetGlobal = _asyncToGenerator(
-    /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee2(url, _ref) {
-      var global, returnDefault, modularVersion;
-      return regeneratorRuntime.wrap(function _callee2$(_context2) {
-        while (1) {
-          switch (_context2.prev = _context2.next) {
-            case 0:
-              global = _ref.global, returnDefault = _ref.returnDefault;
-              // Todo: Replace calls to this function with `import()` when supported
-              modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
-
-              if (!modularVersion) {
-                _context2.next = 4;
-                break;
-              }
-
-              return _context2.abrupt("return", importModule(url, undefined, {
-                returnDefault: returnDefault
-              }));
-
-            case 4:
-              _context2.next = 6;
-              return importScript(url);
-
-            case 6:
-              return _context2.abrupt("return", window[global]);
-
-            case 7:
-            case "end":
-              return _context2.stop();
-          }
-        }
-      }, _callee2, this);
-    }));
     return _importSetGlobal.apply(this, arguments);
   }
 
@@ -9392,6 +9459,7 @@
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var script = document.createElement('script');
 
       var destructor = function destructor() {
@@ -9418,6 +9486,16 @@
       document.head.append(script);
     });
   }
+  /**
+   *
+   * @param {string|string[]} url
+   * @param {PlainObject} [atts={}]
+   * @param {PlainObject} opts
+   * @param {boolean} [opts.returnDefault=false} = {}]
+   * @returns {Promise} Resolves to value of loading module or rejects with
+   *   `Error` upon a script loading error.
+   */
+
   function importModule(url) {
     var atts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
 
@@ -9432,6 +9510,7 @@
     }
 
     return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
       var vector = '$importModule$' + Math.random().toString(32).slice(2);
       var script = document.createElement('script');
 
@@ -9469,6 +9548,202 @@
     });
   }
 
+  /**
+   * @module jQueryPluginDBox
+   */
+
+  /**
+  * @param {external:jQuery} $
+  * @param {PlainObject} [strings]
+  * @param {PlainObject} [strings.ok]
+  * @param {PlainObject} [strings.cancel]
+  * @returns {external:jQuery}
+  */
+  function jQueryPluginDBox($) {
+    var strings = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+      ok: 'Ok',
+      cancel: 'Cancel'
+    };
+    // This sets up alternative dialog boxes. They mostly work the same way as
+    // their UI counterparts, expect instead of returning the result, a callback
+    // needs to be included that returns the result as its first parameter.
+    // In the future we may want to add additional types of dialog boxes, since
+    // they should be easy to handle this way.
+    $('#dialog_container').draggable({
+      cancel: '#dialog_content, #dialog_buttons *',
+      containment: 'window'
+    }).css('position', 'absolute');
+    var box = $('#dialog_box'),
+        btnHolder = $('#dialog_buttons'),
+        dialogContent = $('#dialog_content');
+    /**
+    * Resolves to `false` (if cancelled), for prompts and selects
+    * without checkboxes, it resolves to the value of the form control. For other
+    * types without checkboxes, it resolves to `true`. For checkboxes, it resolves
+    * to an object with the `response` key containing the same value as the previous
+    * mentioned (string or `true`) and a `checked` (boolean) property.
+    * @typedef {Promise} module:jQueryPluginDBox.PromiseResult
+    */
+
+    /**
+    * @typedef {PlainObject} module:jQueryPluginDBox.SelectOption
+    * @property {string} text
+    * @property {string} value
+    */
+
+    /**
+    * @typedef {PlainObject} module:jQueryPluginDBox.CheckboxInfo
+    * @property {string} label Label for the checkbox
+    * @property {string} value Value of the checkbox
+    * @property {string} tooltip Tooltip on the checkbox label
+    * @property {boolean} checked Whether the checkbox is checked by default
+    */
+
+    /**
+     * Triggered upon a change of value for the select pull-down.
+     * @callback module:jQueryPluginDBox.SelectChangeListener
+     * @returns {undefined}
+     */
+
+    /**
+    * @param {"alert"|"prompt"|"select"|"process"} type
+    * @param {string} msg
+    * @param {string} [defaultVal]
+    * @param {module:jQueryPluginDBox.SelectOption[]} [opts]
+    * @param {module:jQueryPluginDBox.SelectChangeListener} [changeListener]
+    * @param {module:jQueryPluginDBox.CheckboxInfo} [checkbox]
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+    function dbox(type, msg, defaultVal, opts, changeListener, checkbox) {
+      dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
+      btnHolder.empty();
+      var ok = $('<input type="button" value="' + strings.ok + '">').appendTo(btnHolder);
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        if (type !== 'alert') {
+          $('<input type="button" value="' + strings.cancel + '">').appendTo(btnHolder).click(function () {
+            box.hide();
+            resolve(false);
+          });
+        }
+
+        var ctrl, chkbx;
+
+        if (type === 'prompt') {
+          ctrl = $('<input type="text">').prependTo(btnHolder);
+          ctrl.val(defaultVal || '');
+          ctrl.bind('keydown', 'return', function () {
+            ok.click();
+          });
+        } else if (type === 'select') {
+          var div = $('<div style="text-align:center;">');
+          ctrl = $('<select>').appendTo(div);
+
+          if (checkbox) {
+            var label = $('<label>').text(checkbox.label);
+            chkbx = $('<input type="checkbox">').appendTo(label);
+            chkbx.val(checkbox.value);
+
+            if (checkbox.tooltip) {
+              label.attr('title', checkbox.tooltip);
+            }
+
+            chkbx.prop('checked', Boolean(checkbox.checked));
+            div.append($('<div>').append(label));
+          }
+
+          $.each(opts || [], function (opt, val) {
+            if (_typeof(val) === 'object') {
+              ctrl.append($('<option>').val(val.value).html(val.text));
+            } else {
+              ctrl.append($('<option>').html(val));
+            }
+          });
+          dialogContent.append(div);
+
+          if (defaultVal) {
+            ctrl.val(defaultVal);
+          }
+
+          if (changeListener) {
+            ctrl.bind('change', 'return', changeListener);
+          }
+
+          ctrl.bind('keydown', 'return', function () {
+            ok.click();
+          });
+        } else if (type === 'process') {
+          ok.hide();
+        }
+
+        box.show();
+        ok.click(function () {
+          box.hide();
+          var response = type === 'prompt' || type === 'select' ? ctrl.val() : true;
+
+          if (chkbx) {
+            resolve({
+              response: response,
+              checked: chkbx.prop('checked')
+            });
+            return;
+          }
+
+          resolve(response);
+        }).focus();
+
+        if (type === 'prompt' || type === 'select') {
+          ctrl.focus();
+        }
+      });
+    }
+    /**
+    * @param {string} msg Message to alert
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.alert = function (msg) {
+      return dbox('alert', msg);
+    };
+    /**
+    * @param {string} msg Message for which to ask confirmation
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.confirm = function (msg) {
+      return dbox('confirm', msg);
+    };
+    /**
+    * @param {string} msg Message to indicate upon cancelable indicator
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.process_cancel = function (msg) {
+      return dbox('process', msg);
+    };
+    /**
+    * @param {string} msg Message to accompany the prompt
+    * @param {string} [defaultText=''] The default text to show for the prompt
+    * @returns {jQueryPluginDBox.PromiseResult}
+    */
+
+
+    $.prompt = function (msg) {
+      var defaultText = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
+      return dbox('prompt', msg, defaultText);
+    };
+
+    $.select = function (msg, opts, changeListener, txt, checkbox) {
+      return dbox('select', msg, txt, opts, changeListener, checkbox);
+    };
+
+    return $;
+  }
+
   var $$4 = jQuery;
   /**
    * This class encapsulates the concept of a layer in the drawing. It can be constructed with
@@ -9597,7 +9872,7 @@
       value: function getOpacity() {
         var opacity = this.group_.getAttribute('opacity');
 
-        if (opacity === null || opacity === undefined) {
+        if (isNullish(opacity)) {
           return 1;
         }
 
@@ -9682,7 +9957,6 @@
       }
       /**
        * Remove this layer's group from the DOM. No more functions on group can be called after this.
-       * @param {SVGGElement} children - The children to append to this layer.
        * @returns {SVGGElement} The layer SVG group that was just removed.
        */
 
@@ -9719,7 +9993,7 @@
   function addLayerClass(elem) {
     var classes = elem.getAttribute('class');
 
-    if (classes === null || classes === undefined || !classes.length) {
+    if (isNullish(classes) || !classes.length) {
       elem.setAttribute('class', Layer.CLASS_NAME);
     } else if (!Layer.CLASS_REGEX.test(classes)) {
       elem.setAttribute('class', classes + ' ' + Layer.CLASS_NAME);
@@ -9809,8 +10083,8 @@
         if (this.currentBatchCommand_) {
           var batchCommand = this.currentBatchCommand_;
           this.batchCommandStack_.pop();
-          var length = this.batchCommandStack_.length;
-          this.currentBatchCommand_ = length ? this.batchCommandStack_[length - 1] : null;
+          var len = this.batchCommandStack_.length;
+          this.currentBatchCommand_ = len ? this.batchCommandStack_[len - 1] : null;
           this.addCommand_(batchCommand);
         }
 
@@ -9893,7 +10167,7 @@
        * Private function to add a command to the history or current batch command.
        * @private
        * @param {Command} cmd
-       * @returns {module:history.HistoryRecordingService}
+       * @returns {module:history.HistoryRecordingService|undefined}
        */
 
     }, {
@@ -9908,6 +10182,8 @@
         } else {
           this.undoManager_.addCommandToHistory(cmd);
         }
+
+        return undefined;
       }
     }]);
 
@@ -10046,7 +10322,7 @@
       var n = this.svgElem_.getAttributeNS(NS.SE, 'nonce'); // If already set in the DOM, use the nonce throughout the document
       // else, if randomizeIds(true) has been called, create and set the nonce.
 
-      if (!!n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
+      if (n && randIds !== RandomizeModes.NEVER_RANDOMIZE) {
         this.nonce_ = n;
       } else if (randIds === RandomizeModes.ALWAYS_RANDOMIZE) {
         this.setNonce(Math.floor(Math.random() * 100001));
@@ -10181,7 +10457,7 @@
         } // extract the obj_num of this id
 
 
-        var num = parseInt(id.substr(front.length), 10); // if we didn't get a positive number or we already released this number
+        var num = parseInt(id.substr(front.length)); // if we didn't get a positive number or we already released this number
         // then return false.
 
         if (typeof num !== 'number' || num <= 0 || this.releasedNums.includes(num)) {
@@ -10683,10 +10959,10 @@
     }, {
       key: "copyElem",
       value: function copyElem$$1(el) {
-        var self = this;
+        var that = this;
 
         var getNextIdClosure = function getNextIdClosure() {
-          return self.getNextId();
+          return that.getNextId();
         };
 
         return copyElem(el, getNextIdClosure);
@@ -11083,26 +11359,6 @@
     canvas_.call('contextset', canvas_.getCurrentGroup());
   };
 
-  var draw = /*#__PURE__*/Object.freeze({
-    Drawing: Drawing,
-    randomizeIds: randomizeIds,
-    init: init$3,
-    identifyLayers: identifyLayers,
-    createLayer: createLayer,
-    cloneLayer: cloneLayer,
-    deleteCurrentLayer: deleteCurrentLayer,
-    setCurrentLayer: setCurrentLayer,
-    renameCurrentLayer: renameCurrentLayer,
-    setCurrentLayerPosition: setCurrentLayerPosition,
-    setLayerVisibility: setLayerVisibility,
-    moveSelectedToLayer: moveSelectedToLayer,
-    mergeLayer: mergeLayer,
-    mergeAllLayers: mergeAllLayers,
-    leaveContext: leaveContext,
-    setContext: setContext,
-    Layer: Layer
-  });
-
   var REVERSE_NS = getReverseNS(); // this defines which elements and attributes that we support
 
   var svgWhiteList_ = {
@@ -11244,7 +11500,7 @@
         var attrNsURI = attr.namespaceURI; // Check that an attribute with the correct localName in the correct namespace is on
         // our whitelist or is a namespace declaration for one of our allowed namespaces
 
-        if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
+        if (!({}.hasOwnProperty.call(allowedAttrsNS, attrLocalName) && attrNsURI === allowedAttrsNS[attrLocalName] && attrNsURI !== NS.XMLNS) && !(attrNsURI === NS.XMLNS && REVERSE_NS[attr.value])) {
           // TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.
           // Bypassing the whitelist to allow se: prefixes.
           // Is there a more appropriate way to do this?
@@ -11261,9 +11517,11 @@
             case 'transform':
             case 'gradientTransform':
             case 'patternTransform':
-              var val = attr.value.replace(/(\d)-/g, '$1 -');
-              node.setAttribute(attrName, val);
-              break;
+              {
+                var val = attr.value.replace(/(\d)-/g, '$1 -');
+                node.setAttribute(attrName, val);
+                break;
+              }
           }
         } // For the style attribute, rewrite it in terms of XML presentational attributes
 
@@ -11359,7 +11617,6 @@
     }
   };
 
-  /* globals jQuery */
   var $$6 = jQuery; // this is how we map paths to our preferred relative segment types
 
   var pathMap$1 = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a', 'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];
@@ -11411,9 +11668,13 @@
         doSnapping = editorContext_$2.getGridSnapping() && selected.parentNode.parentNode.localName === 'svg',
         finishUp = function finishUp() {
       if (doSnapping) {
-        for (var o in changes) {
-          changes[o] = snapToGrid(changes[o]);
-        }
+        Object.entries(changes).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              o = _ref2[0],
+              value = _ref2[1];
+
+          changes[o] = snapToGrid(value);
+        });
       }
 
       assignAttributes(selected, changes, 1000, true);
@@ -11727,7 +11988,7 @@
 
               case 10:
                 // absolute elliptical arc (A)
-                dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + +_seg2.largeArcFlag + ' ' + +_seg2.sweepFlag + ' ' + _seg2.x + ',' + _seg2.y + ' ';
+                dstr += _seg2.r1 + ',' + _seg2.r2 + ' ' + _seg2.angle + ' ' + Number(_seg2.largeArcFlag) + ' ' + Number(_seg2.sweepFlag) + ' ' + _seg2.x + ',' + _seg2.y + ' ';
                 break;
 
               case 17: // relative smooth cubic (s)
@@ -11746,7 +12007,7 @@
   };
 
   /* globals jQuery */
-  var $$7 = jqPluginSVG(jQuery);
+  var $$7 = jQueryPluginSVG(jQuery);
   var context_;
   /**
   * @interface module:recalculate.EditorContext
@@ -11803,7 +12064,7 @@
   */
 
   var recalculateDimensions = function recalculateDimensions(selected) {
-    if (selected == null) {
+    if (isNullish(selected)) {
       return null;
     } // Firefox Issue - 1081
 
@@ -11989,7 +12250,7 @@
     // make a copy of initial values and include the transform
 
 
-    if (initial == null) {
+    if (isNullish(initial)) {
       initial = $$7.extend(true, {}, changes);
       $$7.each(initial, function (attr, val) {
         initial[attr] = convertToNum(attr, val);
@@ -12595,7 +12856,8 @@
         // Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]
 
       } else if (_operation === 3 && _angle) {
-        var _m6 = transformListToTransform(tlist).matrix;
+        var _transformListToTrans = transformListToTransform(tlist),
+            matrix = _transformListToTrans.matrix;
 
         var _roldt = svgroot.createSVGTransform();
 
@@ -12609,9 +12871,9 @@
 
         var _rnewInv = _rnew.matrix.inverse();
 
-        var _mInv2 = _m6.inverse();
+        var _mInv2 = matrix.inverse();
 
-        var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, _m6);
+        var _extrat = matrixMultiply(_mInv2, _rnewInv, _rold, matrix);
 
         remapElement(selected, changes, _extrat);
 
@@ -12712,39 +12974,6 @@
         this.selectorGroup.setAttribute('display', 'inline');
       }
       /**
-      * Updates cursors for corner grips on rotation so arrows point the right way.
-      * @param {Float} angle - Current rotation angle in degrees
-      * @returns {undefined}
-      */
-
-    }, {
-      key: "updateGripCursors",
-      value: function updateGripCursors(angle) {
-        var dir;
-        var dirArr = [];
-        var steps = Math.round(angle / 45);
-
-        if (steps < 0) {
-          steps += 8;
-        }
-
-        for (dir in selectorManager_.selectorGrips) {
-          dirArr.push(dir);
-        }
-
-        while (steps > 0) {
-          dirArr.push(dirArr.shift());
-          steps--;
-        }
-
-        var i = 0;
-
-        for (dir in selectorManager_.selectorGrips) {
-          selectorManager_.selectorGrips[dir].setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
-          i++;
-        }
-      }
-      /**
       * Show the resize grips of this selector.
       * @param {boolean} show - Indicates whether grips should be shown or not
       * @returns {undefined}
@@ -12760,7 +12989,7 @@
 
         if (elem && show) {
           this.selectorGroup.append(selectorManager_.selectorGripsGroup);
-          this.updateGripCursors(getRotationAngle(elem));
+          Selector.updateGripCursors(getRotationAngle(elem));
         }
       }
       /**
@@ -12877,13 +13106,14 @@
           e: [nbax + nbaw, nbay + nbah / 2],
           s: [nbax + nbaw / 2, nbay + nbah]
         };
+        Object.entries(this.gripCoords).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              dir = _ref2[0],
+              coords = _ref2[1];
 
-        for (var dir in this.gripCoords) {
-          var coords = this.gripCoords[dir];
           selectedGrips[dir].setAttribute('cx', coords[0]);
           selectedGrips[dir].setAttribute('cy', coords[1]);
-        } // we want to go 20 pixels in the negative transformed y direction, ignoring scale
-
+        }); // we want to go 20 pixels in the negative transformed y direction, ignoring scale
 
         mgr.rotateGripConnector.setAttribute('x1', nbax + nbaw / 2);
         mgr.rotateGripConnector.setAttribute('y1', nbay);
@@ -12897,9 +13127,33 @@
     return Selector;
   }();
   /**
+  * Updates cursors for corner grips on rotation so arrows point the right way.
+  * @param {Float} angle - Current rotation angle in degrees
+  * @returns {undefined}
+  */
+
+  Selector.updateGripCursors = function (angle) {
+    var dirArr = Object.keys(selectorManager_.selectorGrips);
+    var steps = Math.round(angle / 45);
+
+    if (steps < 0) {
+      steps += 8;
+    }
+
+    while (steps > 0) {
+      dirArr.push(dirArr.shift());
+      steps--;
+    }
+
+    Object.values(selectorManager_.selectorGrips).forEach(function (gripElement, i) {
+      gripElement.setAttribute('style', 'cursor:' + dirArr[i] + '-resize');
+    });
+  };
+  /**
   * Manage all selector objects (selection boxes).
   */
 
+
   var SelectorManager =
   /*#__PURE__*/
   function () {
@@ -12939,6 +13193,8 @@
     _createClass(SelectorManager, [{
       key: "initGroup",
       value: function initGroup() {
+        var _this = this;
+
         // remove old selector parent group if it existed
         if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {
           this.selectorParentGroup.remove();
@@ -12963,7 +13219,7 @@
         this.selectors = [];
         this.rubberBandBox = null; // add the corner grips
 
-        for (var dir in this.selectorGrips) {
+        Object.keys(this.selectorGrips).forEach(function (dir) {
           var grip = svgFactory_.createSVGElement({
             element: 'circle',
             attr: {
@@ -12981,9 +13237,8 @@
           });
           $$8.data(grip, 'dir', dir);
           $$8.data(grip, 'type', 'resize');
-          this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);
-        } // add rotator elems
-
+          _this.selectorGrips[dir] = _this.selectorGripsGroup.appendChild(grip);
+        }); // add rotator elems
 
         this.rotateGripConnector = this.selectorGripsGroup.appendChild(svgFactory_.createSVGElement({
           element: 'line',
@@ -13056,7 +13311,7 @@
     }, {
       key: "requestSelector",
       value: function requestSelector(elem, bbox) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return null;
         }
 
@@ -13092,7 +13347,7 @@
     }, {
       key: "releaseSelector",
       value: function releaseSelector(elem) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return;
         }
 
@@ -13101,7 +13356,7 @@
 
         if (!sel.locked) {
           // TODO(codedread): Ensure this exists in this module.
-          console.log('WARNING! selector was released but was already unlocked');
+          console.log('WARNING! selector was released but was already unlocked'); // eslint-disable-line no-console
         }
 
         for (var i = 0; i < N; ++i) {
@@ -13210,7 +13465,7 @@
     return selectorManager_;
   };
 
-  var $$9 = jqPluginSVG(jQuery);
+  var $$9 = jQueryPluginSVG(jQuery);
   var MoveElementCommand$1 = MoveElementCommand,
       InsertElementCommand$1 = InsertElementCommand,
       RemoveElementCommand$1 = RemoveElementCommand,
@@ -13222,9 +13477,13 @@
   if (!window.console) {
     window.console = {};
 
-    window.console.log = function (str) {};
+    window.console.log = function (str) {
+      /* */
+    };
 
-    window.console.dir = function (str) {};
+    window.console.dir = function (str) {
+      /* */
+    };
   }
 
   if (window.opera) {
@@ -13232,7 +13491,9 @@
       window.opera.postError(str);
     };
 
-    window.console.dir = function (str) {};
+    window.console.dir = function (str) {
+      /* */
+    };
   }
   /**
   * The main SvgCanvas class that manages all SVG-related functions.
@@ -13286,7 +13547,8 @@
 
 
     var dimensions = curConfig.dimensions;
-    var canvas = this; // "document" element associated with the container (same as window.document using default svg-editor.js)
+    var canvas = this; // eslint-disable-line consistent-this
+    // "document" element associated with the container (same as window.document using default svg-editor.js)
     // NOTE: This is not actually a SVG document, but an HTML document.
 
     var svgdoc = container.ownerDocument; // This is a container for the document being edited, not the document itself.
@@ -13662,10 +13924,8 @@
               if (isApply) {
                 restoreRefElems(cmd.elem);
               }
-            } else {
-              if (!isApply) {
-                restoreRefElems(cmd.elem);
-              }
+            } else if (!isApply) {
+              restoreRefElems(cmd.elem);
             }
 
             if (cmd.elem.tagName === 'use') {
@@ -13727,7 +13987,7 @@
 
 
     var round = this.round = function (val) {
-      return parseInt(val * currentZoom, 10) / currentZoom;
+      return parseInt(val * currentZoom) / currentZoom;
     };
 
     init$6(curConfig,
@@ -13777,7 +14037,7 @@
     * @implements {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}
     * @param {"selected"|"changed"|"contextset"|"pointsAdded"|"extension_added"|"extensions_added"|"message"|"transition"|"zoomed"|"updateCanvas"|"zoomDone"|"saved"|"exported"|"exportedPDF"|"setnonce"|"unsetnonce"|"cleared"} ev - String with the event name
     * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg - Argument to pass through to the callback function.
-    * @returns {undefined}
+    * @returns {module:svgcanvas.EventHandlerReturn|undefined}
     */
 
 
@@ -13785,6 +14045,8 @@
       if (events[ev]) {
         return events[ev](window, arg);
       }
+
+      return undefined;
     };
     /**
     * Clears the selection. The 'selected' handler is then optionally called.
@@ -13797,7 +14059,7 @@
 
     var clearSelection = this.clearSelection = function (noCall) {
       selectedElements.forEach(function (elem) {
-        if (elem == null) {
+        if (isNullish(elem)) {
           return;
         }
 
@@ -13826,7 +14088,7 @@
       var j = 0;
 
       while (j < selectedElements.length) {
-        if (selectedElements[j] == null) {
+        if (isNullish(selectedElements[j])) {
           break;
         }
 
@@ -13880,15 +14142,17 @@
 
       selectedElements.sort(function (a, b) {
         if (a && b && a.compareDocumentPosition) {
-          return 3 - (b.compareDocumentPosition(a) & 6);
+          return 3 - (b.compareDocumentPosition(a) & 6); // eslint-disable-line no-bitwise
         }
 
-        if (a == null) {
+        if (isNullish(a)) {
           return 1;
         }
+
+        return 0;
       }); // Make sure first elements are not null
 
-      while (selectedElements[0] == null) {
+      while (isNullish(selectedElements[0])) {
         selectedElements.shift(0);
       }
     };
@@ -13907,7 +14171,7 @@
 
 
     var getMouseTarget = this.getMouseTarget = function (evt) {
-      if (evt == null) {
+      if (isNullish(evt)) {
         return null;
       }
 
@@ -14012,8 +14276,9 @@
       },
 
       /**
-       * @param {boolean} closedSubpath
-       * @param {SVGCircleElement[]} grips
+       * @param {PlainObject} ptsInfo
+       * @param {boolean} ptsInfo.closedSubpath
+       * @param {SVGCircleElement[]} ptsInfo.grips
        * @fires module:svgcanvas.SvgCanvas#event:pointsAdded
        * @fires module:svgcanvas.SvgCanvas#event:selected
        * @returns {undefined}
@@ -14032,8 +14297,9 @@
       },
 
       /**
-       * @param {ChangeElementCommand} cmd
-       * @param {SVGPathElement} elem
+       * @param {PlainObject} changes
+       * @param {ChangeElementCommand} changes.cmd
+       * @param {SVGPathElement} changes.elem
        * @fires module:svgcanvas.SvgCanvas#event:changed
        * @returns {undefined}
        */
@@ -14080,10 +14346,7 @@
     var restoreRefElems = function restoreRefElems(elem) {
       // Look for missing reference elements, restore any found
       var attrs = $$9(elem).attr(refAttrs);
-
-      for (var o in attrs) {
-        var val = attrs[o];
-
+      Object.values(attrs).forEach(function (val) {
         if (val && val.startsWith('url(')) {
           var id = getUrlFromAttr(val).substr(1);
           var ref = getElem(id);
@@ -14093,8 +14356,7 @@
             delete removedElements[id];
           }
         }
-      }
-
+      });
       var childs = elem.getElementsByTagName('*');
 
       if (childs.length) {
@@ -14159,6 +14421,12 @@
     curBBoxes = [],
         // Canvas point for the most recent right click
     lastClickPoint = null;
+
+    this.runExtension = function (name, action, vars) {
+      return this.runExtensions(action, vars, false, function (n) {
+        return n === name;
+      });
+    };
     /**
     * @typedef {module:svgcanvas.ExtensionMouseDownStatus|module:svgcanvas.ExtensionMouseUpStatus|module:svgcanvas.ExtensionIDsUpdatedStatus|module:locale.ExtensionLocaleData[]|undefined} module:svgcanvas.ExtensionStatus
     * @tutorial ExtensionDocs
@@ -14167,6 +14435,13 @@
     /**
     * @callback module:svgcanvas.ExtensionVarBuilder
     * @param {string} name The name of the extension
+    * @returns {module:svgcanvas.SvgCanvas#event:ext-addLangData}
+    */
+
+    /**
+    * @callback module:svgcanvas.ExtensionNameFilter
+    * @param {string} name
+    * @returns {boolean}
     */
 
     /**
@@ -14176,12 +14451,18 @@
     * @param {"mouseDown"|"mouseMove"|"mouseUp"|"zoomChanged"|"IDsUpdated"|"canvasUpdated"|"toolButtonStateUpdate"|"selectedChanged"|"elementTransition"|"elementChanged"|"langReady"|"langChanged"|"addLangData"|"onNewDocument"|"workareaResized"} action
     * @param {module:svgcanvas.SvgCanvas#event:ext-mouseDown|module:svgcanvas.SvgCanvas#event:ext-mouseMove|module:svgcanvas.SvgCanvas#event:ext-mouseUp|module:svgcanvas.SvgCanvas#event:ext-zoomChanged|module:svgcanvas.SvgCanvas#event:ext-IDsUpdated|module:svgcanvas.SvgCanvas#event:ext-canvasUpdated|module:svgcanvas.SvgCanvas#event:ext-toolButtonStateUpdate|module:svgcanvas.SvgCanvas#event:ext-selectedChanged|module:svgcanvas.SvgCanvas#event:ext-elementTransition|module:svgcanvas.SvgCanvas#event:ext-elementChanged|module:svgcanvas.SvgCanvas#event:ext-langReady|module:svgcanvas.SvgCanvas#event:ext-langChanged|module:svgcanvas.SvgCanvas#event:ext-addLangData|module:svgcanvas.SvgCanvas#event:ext-onNewDocument|module:svgcanvas.SvgCanvas#event:ext-workareaResized|module:svgcanvas.ExtensionVarBuilder} [vars]
     * @param {boolean} [returnArray]
+    * @param {module:svgcanvas.ExtensionNameFilter} nameFilter
     * @returns {GenericArray.<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.
     */
 
-    var runExtensions = this.runExtensions = function (action, vars, returnArray) {
+
+    var runExtensions = this.runExtensions = function (action, vars, returnArray, nameFilter) {
       var result = returnArray ? [] : false;
       $$9.each(extensions, function (name, ext) {
+        if (nameFilter && !nameFilter(name)) {
+          return;
+        }
+
         if (ext && action in ext) {
           if (typeof vars === 'function') {
             vars = vars(name); // ext, action
@@ -14331,7 +14612,8 @@
     * @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data
     * @param {module:SVGEditor~ImportLocale} importLocale
     * @fires module:svgcanvas.SvgCanvas#event:extension_added
-    * @throws {TypeError} If `extInitFunc` is not a function
+    * @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`
+    *   if extension of supplied name already exists
     * @returns {Promise} Resolves to `undefined`
     */
 
@@ -14355,11 +14637,14 @@
                 throw new TypeError('Function argument expected for `svgcanvas.addExtension`');
 
               case 2:
-                if (name in extensions) {
-                  _context.next = 12;
+                if (!(name in extensions)) {
+                  _context.next = 4;
                   break;
                 }
 
+                throw new Error('Cannot add extension "' + name + '", an extension by that name already exists.');
+
+              case 4:
                 // Provide private vars/funcs here. Is there a better way to do this?
 
                 /**
@@ -14376,16 +14661,17 @@
                  * @see {@link module:svgcanvas.PrivateMethods} source for the other methods/properties
                  */
                 argObj = $$9.extend(canvas.getPrivateMethods(), {
+                  $: $$9,
                   importLocale: importLocale,
                   svgroot: svgroot,
                   svgcontent: svgcontent,
                   nonce: getCurrentDrawing().getNonce(),
                   selectorManager: selectorManager
                 });
-                _context.next = 6;
+                _context.next = 7;
                 return extInitFunc(argObj);
 
-              case 6:
+              case 7:
                 extObj = _context.sent;
 
                 if (extObj) {
@@ -14395,10 +14681,7 @@
                 extensions[name] = extObj;
                 return _context.abrupt("return", call('extension_added', extObj));
 
-              case 12:
-                console.log('Cannot add extension "' + name + '", an extension by that name already exists.');
-
-              case 13:
+              case 11:
               case "end":
                 return _context.stop();
             }
@@ -14425,7 +14708,7 @@
 
 
     var getIntersectionList = this.getIntersectionList = function (rect) {
-      if (rubberBox == null) {
+      if (isNullish(rubberBox)) {
         return null;
       }
 
@@ -14435,11 +14718,9 @@
       if (!rect) {
         rubberBBox = rubberBox.getBBox();
         var bb = svgcontent.createSVGRect();
-
-        for (var o in rubberBBox) {
+        ['x', 'y', 'width', 'height', 'top', 'right', 'bottom', 'left'].forEach(function (o) {
           bb[o] = rubberBBox[o] / currentZoom;
-        }
-
+        });
         rubberBBox = bb;
       } else {
         rubberBBox = svgcontent.createSVGRect();
@@ -14454,13 +14735,13 @@
       if (!isIE) {
         if (typeof svgroot.getIntersectionList === 'function') {
           // Offset the bbox of the rubber box by the offset of the svgcontent element.
-          rubberBBox.x += parseInt(svgcontent.getAttribute('x'), 10);
-          rubberBBox.y += parseInt(svgcontent.getAttribute('y'), 10);
+          rubberBBox.x += parseInt(svgcontent.getAttribute('x'));
+          rubberBBox.y += parseInt(svgcontent.getAttribute('y'));
           resultList = svgroot.getIntersectionList(rubberBBox, parent);
         }
       }
 
-      if (resultList == null || typeof resultList.item !== 'function') {
+      if (isNullish(resultList) || typeof resultList.item !== 'function') {
         resultList = [];
 
         if (!curBBoxes.length) {
@@ -14661,11 +14942,18 @@
      * @type {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed|module:svgcanvas.SvgCanvas#event:contextset|module:svgcanvas.SvgCanvas#event:pointsAdded|module:svgcanvas.SvgCanvas#event:extension_added|module:svgcanvas.SvgCanvas#event:extensions_added|module:svgcanvas.SvgCanvas#event:message|module:svgcanvas.SvgCanvas#event:transition|module:svgcanvas.SvgCanvas#event:zoomed|module:svgcanvas.SvgCanvas#event:updateCanvas|module:svgcanvas.SvgCanvas#event:saved|module:svgcanvas.SvgCanvas#event:exported|module:svgcanvas.SvgCanvas#event:exportedPDF|module:svgcanvas.SvgCanvas#event:setnonce|module:svgcanvas.SvgCanvas#event:unsetnonce|undefined}
      */
 
+    /**
+     * The promise return, if present, resolves to `undefined`
+     *  (`extension_added`, `exported`, `saved`)
+     * @typedef {Promise|undefined} module:svgcanvas.EventHandlerReturn
+    */
+
     /**
     * @callback module:svgcanvas.EventHandler
     * @param {external:Window} win
     * @param {module:svgcanvas.SvgCanvas#event:GenericCanvasEvent} arg
     * @listens module:svgcanvas.SvgCanvas#event:GenericCanvasEvent
+    * @returns {module:svgcanvas.EventHandlerReturn}
     */
 
     /**
@@ -14789,7 +15077,7 @@
 
       var selector = selectorManager.requestSelector(selectedElements[0]);
       selector.resize();
-      selector.updateGripCursors(val);
+      Selector.updateGripCursors(val);
     };
     /**
     * Runs `recalculateDimensions` on the selected elements,
@@ -14829,7 +15117,7 @@
 
 
     var logMatrix = function logMatrix(m) {
-      console.log([m.a, m.b, m.c, m.d, m.e, m.f]);
+      console.log([m.a, m.b, m.c, m.d, m.e, m.f]); // eslint-disable-line no-console
     }; // Root Current Transformation Matrix in user units
 
 
@@ -14864,7 +15152,7 @@
 
 
     this.removeFromSelection = function (elemsToRemove) {
-      if (selectedElements[0] == null) {
+      if (isNullish(selectedElements[0])) {
         return;
       }
 
@@ -15036,7 +15324,7 @@
         // set the mouseTarget to that and update the mode to rotate/resize
 
 
-        if (mouseTarget === selectorManager.selectorParentGroup && selectedElements[0] != null) {
+        if (mouseTarget === selectorManager.selectorParentGroup && !isNullish(selectedElements[0])) {
           var grip = evt.target;
           var griptype = elData(grip, 'type'); // rotating
 
@@ -15051,7 +15339,6 @@
         }
 
         startTransform = mouseTarget.getAttribute('transform');
-        var i, strokeW;
         var tlist = getTransformList(mouseTarget);
 
         switch (currentMode) {
@@ -15082,8 +15369,8 @@
               if (!rightClick) {
                 // insert a dummy transform so if the element(s) are moved it will have
                 // a transform to use for its translate
-                for (i = 0; i < selectedElements.length; ++i) {
-                  if (selectedElements[i] == null) {
+                for (var i = 0; i < selectedElements.length; ++i) {
+                  if (isNullish(selectedElements[i])) {
                     continue;
                   }
 
@@ -15100,7 +15387,7 @@
               clearSelection();
               currentMode = 'multiselect';
 
-              if (rubberBox == null) {
+              if (isNullish(rubberBox)) {
                 rubberBox = selectorManager.getRubberBandBox();
               }
 
@@ -15124,7 +15411,7 @@
           case 'zoom':
             started = true;
 
-            if (rubberBox == null) {
+            if (isNullish(rubberBox)) {
               rubberBox = selectorManager.getRubberBandBox();
             }
 
@@ -15138,75 +15425,77 @@
             break;
 
           case 'resize':
-            started = true;
-            startX = x;
-            startY = y; // Getting the BBox from the selection box, since we know we
-            // want to orient around it
+            {
+              started = true;
+              startX = x;
+              startY = y; // Getting the BBox from the selection box, since we know we
+              // want to orient around it
 
-            initBbox = getBBox($$9('#selectedBox0')[0]);
-            var bb = {};
-            $$9.each(initBbox, function (key, val) {
-              bb[key] = val / currentZoom;
-            });
-            initBbox = bb; // append three dummy transforms to the tlist so that
-            // we can translate,scale,translate in mousemove
+              initBbox = getBBox($$9('#selectedBox0')[0]);
+              var bb = {};
+              $$9.each(initBbox, function (key, val) {
+                bb[key] = val / currentZoom;
+              });
+              initBbox = bb; // append three dummy transforms to the tlist so that
+              // we can translate,scale,translate in mousemove
 
-            var pos = getRotationAngle(mouseTarget) ? 1 : 0;
+              var pos = getRotationAngle(mouseTarget) ? 1 : 0;
 
-            if (hasMatrixTransform(tlist)) {
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-              tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
-            } else {
-              tlist.appendItem(svgroot.createSVGTransform());
-              tlist.appendItem(svgroot.createSVGTransform());
-              tlist.appendItem(svgroot.createSVGTransform());
+              if (hasMatrixTransform(tlist)) {
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+                tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
+              } else {
+                tlist.appendItem(svgroot.createSVGTransform());
+                tlist.appendItem(svgroot.createSVGTransform());
+                tlist.appendItem(svgroot.createSVGTransform());
 
-              if (supportsNonScalingStroke()) {
-                // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
-                // https://code.google.com/p/svg-edit/issues/detail?id=904
-                // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
-                // TODO: Remove this workaround once vendor fixes the issue
-                var iswebkit = isWebkit();
-                var delayedStroke;
-
-                if (iswebkit) {
-                  delayedStroke = function delayedStroke(ele) {
-                    var _stroke = ele.getAttribute('stroke');
-
-                    ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
-
-                    if (_stroke !== null) setTimeout(function () {
-                      ele.setAttribute('stroke', _stroke);
-                    }, 0);
-                  };
-                }
-
-                mouseTarget.style.vectorEffect = 'non-scaling-stroke';
-
-                if (iswebkit) {
-                  delayedStroke(mouseTarget);
-                }
-
-                var all = mouseTarget.getElementsByTagName('*'),
-                    len = all.length;
-
-                for (i = 0; i < len; i++) {
-                  if (!all[i].style) {
-                    // mathML
-                    continue;
-                  }
-
-                  all[i].style.vectorEffect = 'non-scaling-stroke';
+                if (supportsNonScalingStroke()) {
+                  // Handle crash for newer Chrome and Safari 6 (Mobile and Desktop):
+                  // https://code.google.com/p/svg-edit/issues/detail?id=904
+                  // Chromium issue: https://code.google.com/p/chromium/issues/detail?id=114625
+                  // TODO: Remove this workaround once vendor fixes the issue
+                  var iswebkit = isWebkit();
+                  var delayedStroke;
 
                   if (iswebkit) {
-                    delayedStroke(all[i]);
+                    delayedStroke = function delayedStroke(ele) {
+                      var _stroke = ele.getAttribute('stroke');
+
+                      ele.removeAttribute('stroke'); // Re-apply stroke after delay. Anything higher than 1 seems to cause flicker
+
+                      if (_stroke !== null) setTimeout(function () {
+                        ele.setAttribute('stroke', _stroke);
+                      }, 0);
+                    };
+                  }
+
+                  mouseTarget.style.vectorEffect = 'non-scaling-stroke';
+
+                  if (iswebkit) {
+                    delayedStroke(mouseTarget);
+                  }
+
+                  var all = mouseTarget.getElementsByTagName('*'),
+                      len = all.length;
+
+                  for (var _i2 = 0; _i2 < len; _i2++) {
+                    if (!all[_i2].style) {
+                      // mathML
+                      continue;
+                    }
+
+                    all[_i2].style.vectorEffect = 'non-scaling-stroke';
+
+                    if (iswebkit) {
+                      delayedStroke(all[_i2]);
+                    }
                   }
                 }
               }
-            }
 
-            break;
+              break;
+            }
 
           case 'fhellipse':
           case 'fhrect':
@@ -15236,22 +15525,24 @@
             break;
 
           case 'image':
-            started = true;
-            var newImage = addSVGElementFromJson({
-              element: 'image',
-              attr: {
-                x: x,
-                y: y,
-                width: 0,
-                height: 0,
-                id: getNextId(),
-                opacity: curShape.opacity / 2,
-                style: 'pointer-events:inherit'
-              }
-            });
-            setHref(newImage, lastGoodImgUrl);
-            preventClickDefault(newImage);
-            break;
+            {
+              started = true;
+              var newImage = addSVGElementFromJson({
+                element: 'image',
+                attr: {
+                  x: x,
+                  y: y,
+                  width: 0,
+                  height: 0,
+                  id: getNextId(),
+                  opacity: curShape.opacity / 2,
+                  style: 'pointer-events:inherit'
+                }
+              });
+              setHref(newImage, lastGoodImgUrl);
+              preventClickDefault(newImage);
+              break;
+            }
 
           case 'square': // FIXME: once we create the rect, we lose information that this was a square
           // (for resizing purposes this could be important)
@@ -15276,29 +15567,31 @@
             break;
 
           case 'line':
-            started = true;
-            strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
-            addSVGElementFromJson({
-              element: 'line',
-              curStyles: true,
-              attr: {
-                x1: x,
-                y1: y,
-                x2: x,
-                y2: y,
-                id: getNextId(),
-                stroke: curShape.stroke,
-                'stroke-width': strokeW,
-                'stroke-dasharray': curShape.stroke_dasharray,
-                'stroke-linejoin': curShape.stroke_linejoin,
-                'stroke-linecap': curShape.stroke_linecap,
-                'stroke-opacity': curShape.stroke_opacity,
-                fill: 'none',
-                opacity: curShape.opacity / 2,
-                style: 'pointer-events:none'
-              }
-            });
-            break;
+            {
+              started = true;
+              var strokeW = Number(curShape.stroke_width) === 0 ? 1 : curShape.stroke_width;
+              addSVGElementFromJson({
+                element: 'line',
+                curStyles: true,
+                attr: {
+                  x1: x,
+                  y1: y,
+                  x2: x,
+                  y2: y,
+                  id: getNextId(),
+                  stroke: curShape.stroke,
+                  'stroke-width': strokeW,
+                  'stroke-dasharray': curShape.stroke_dasharray,
+                  'stroke-linejoin': curShape.stroke_linejoin,
+                  'stroke-linecap': curShape.stroke_linecap,
+                  'stroke-opacity': curShape.stroke_opacity,
+                  fill: 'none',
+                  opacity: curShape.opacity / 2,
+                  style: 'pointer-events:none'
+                }
+              });
+              break;
+            }
 
           case 'circle':
             started = true;
@@ -15482,7 +15775,7 @@
                   for (i = 0; i < len; ++i) {
                     selected = selectedElements[i];
 
-                    if (selected == null) {
+                    if (isNullish(selected)) {
                       break;
                     } // if (i === 0) {
                     //   const box = utilsGetBBox(selected);
@@ -15834,9 +16127,7 @@
               break; // update path stretch line coordinates
             }
 
-          case 'path':
-
-          // fall through
+          case 'path': // fall through
 
           case 'pathedit':
             {
@@ -15993,7 +16284,7 @@
           // intentionally fall-through to select here
           case 'resize':
           case 'multiselect':
-            if (rubberBox != null) {
+            if (!isNullish(rubberBox)) {
               rubberBox.setAttribute('display', 'none');
               curBBoxes = [];
             }
@@ -16002,9 +16293,9 @@
           // Fallthrough
 
           case 'select':
-            if (selectedElements[0] != null) {
+            if (!isNullish(selectedElements[0])) {
               // if we only have one selected element
-              if (selectedElements[1] == null) {
+              if (isNullish(selectedElements[1])) {
                 // set our current stroke/fill properties to the element's
                 var selected = selectedElements[0];
 
@@ -16042,7 +16333,7 @@
                 var len = selectedElements.length;
 
                 for (var i = 0; i < len; ++i) {
-                  if (selectedElements[i] == null) {
+                  if (isNullish(selectedElements[i])) {
                     break;
                   }
 
@@ -16055,7 +16346,7 @@
               } else {
                 t = evt.target;
 
-                if (selectedElements[0].nodeName === 'path' && selectedElements[1] == null) {
+                if (selectedElements[0].nodeName === 'path' && isNullish(selectedElements[1])) {
                   pathActions$$1.select(selectedElements[0]); // if it was a path
                   // else, if it was selected and this is a shift-click, remove it from selection
                 } else if (evt.shiftKey) {
@@ -16072,8 +16363,8 @@
 
                 if (elem) {
                   elem.removeAttribute('style');
-                  walkTree(elem, function (elem) {
-                    elem.removeAttribute('style');
+                  walkTree(elem, function (el) {
+                    el.removeAttribute('style');
                   });
                 }
               }
@@ -16082,57 +16373,61 @@
             return;
 
           case 'zoom':
-            if (rubberBox != null) {
-              rubberBox.setAttribute('display', 'none');
-            }
+            {
+              if (!isNullish(rubberBox)) {
+                rubberBox.setAttribute('display', 'none');
+              }
 
-            var factor = evt.shiftKey ? 0.5 : 2;
-            call('zoomed', {
-              x: Math.min(rStartX, realX),
-              y: Math.min(rStartY, realY),
-              width: Math.abs(realX - rStartX),
-              height: Math.abs(realY - rStartY),
-              factor: factor
-            });
-            return;
+              var factor = evt.shiftKey ? 0.5 : 2;
+              call('zoomed', {
+                x: Math.min(rStartX, realX),
+                y: Math.min(rStartY, realY),
+                width: Math.abs(realX - rStartX),
+                height: Math.abs(realY - rStartY),
+                factor: factor
+              });
+              return;
+            }
 
           case 'fhpath':
-            // Check that the path contains at least 2 points; a degenerate one-point path
-            // causes problems.
-            // Webkit ignores how we set the points attribute with commas and uses space
-            // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
-            sumDistance = 0;
-            controllPoint2 = {
-              x: 0,
-              y: 0
-            };
-            controllPoint1 = {
-              x: 0,
-              y: 0
-            };
-            start = {
-              x: 0,
-              y: 0
-            };
-            end = {
-              x: 0,
-              y: 0
-            };
-            var coords = element.getAttribute('points');
-            var commaIndex = coords.indexOf(',');
+            {
+              // Check that the path contains at least 2 points; a degenerate one-point path
+              // causes problems.
+              // Webkit ignores how we set the points attribute with commas and uses space
+              // to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
+              sumDistance = 0;
+              controllPoint2 = {
+                x: 0,
+                y: 0
+              };
+              controllPoint1 = {
+                x: 0,
+                y: 0
+              };
+              start = {
+                x: 0,
+                y: 0
+              };
+              end = {
+                x: 0,
+                y: 0
+              };
+              var coords = element.getAttribute('points');
+              var commaIndex = coords.indexOf(',');
 
-            if (commaIndex >= 0) {
-              keep = coords.indexOf(',', commaIndex + 1) >= 0;
-            } else {
-              keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+              if (commaIndex >= 0) {
+                keep = coords.indexOf(',', commaIndex + 1) >= 0;
+              } else {
+                keep = coords.indexOf(' ', coords.indexOf(' ') + 1) >= 0;
+              }
+
+              if (keep) {
+                element = pathActions$$1.smoothPolylineIntoPath(element);
+              }
+
+              break;
             }
 
-            if (keep) {
-              element = pathActions$$1.smoothPolylineIntoPath(element);
-            }
-
-            break;
-
           case 'line':
             attrs = $$9(element).attr(['x1', 'x2', 'y1', 'y2']);
             keep = attrs.x1 !== attrs.x2 || attrs.y1 !== attrs.y2;
@@ -16201,14 +16496,16 @@
             break;
 
           case 'path':
-            // set element to null here so that it is not removed nor finalized
-            element = null; // continue to be set to true so that mouseMove happens
+            {
+              // set element to null here so that it is not removed nor finalized
+              element = null; // continue to be set to true so that mouseMove happens
 
-            started = true;
-            var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
-            element = res.element;
-            keep = res.keep;
-            break;
+              started = true;
+              var res = pathActions$$1.mouseUp(evt, element, mouseX, mouseY);
+              element = res.element;
+              keep = res.keep;
+              break;
+            }
 
           case 'pathedit':
             keep = true;
@@ -16223,19 +16520,21 @@
             break;
 
           case 'rotate':
-            keep = true;
-            element = null;
-            currentMode = 'select';
-            var batchCmd = canvas.undoMgr.finishUndoableChange();
+            {
+              keep = true;
+              element = null;
+              currentMode = 'select';
+              var batchCmd = canvas.undoMgr.finishUndoableChange();
 
-            if (!batchCmd.isEmpty()) {
-              addCommandToHistory(batchCmd);
-            } // perform recalculation to weed out any stray identity transforms that might get stuck
+              if (!batchCmd.isEmpty()) {
+                addCommandToHistory(batchCmd);
+              } // perform recalculation to weed out any stray identity transforms that might get stuck
 
 
-            recalculateAllSelectedDimensions();
-            call('changed', selectedElements);
-            break;
+              recalculateAllSelectedDimensions();
+              call('changed', selectedElements);
+              break;
+            }
 
           default:
             // This could occur in an extension
@@ -16266,7 +16565,7 @@
           }
         });
 
-        if (!keep && element != null) {
+        if (!keep && !isNullish(element)) {
           getCurrentDrawing().releaseId(getId());
           element.remove();
           element = null;
@@ -16286,7 +16585,7 @@
             canvas.setMode('select');
             selectOnly([t], true);
           }
-        } else if (element != null) {
+        } else if (!isNullish(element)) {
           /**
           * @name module:svgcanvas.SvgCanvas#addedNew
           * @type {boolean}
@@ -16418,8 +16717,8 @@
         var workareaViewH = editorH * rootSctm.d; // content offset from canvas in screen pixels
 
         var wOffset = workarea.offset();
-        var wOffsetLeft = wOffset['left'] + rulerwidth;
-        var wOffsetTop = wOffset['top'] + rulerwidth;
+        var wOffsetLeft = wOffset.left + rulerwidth;
+        var wOffsetTop = wOffset.top + rulerwidth;
         var delta = evt.wheelDelta ? evt.wheelDelta : evt.detail ? -evt.detail : 0;
 
         if (!delta) {
@@ -16491,6 +16790,11 @@
       var matrix;
       var lastX, lastY;
       var allowDbl;
+      /**
+       *
+       * @param {Integer} index
+       * @returns {undefined}
+       */
 
       function setCursor(index) {
         var empty = textinput.value === '';
@@ -16548,6 +16852,14 @@
           selblock.setAttribute('d', '');
         }
       }
+      /**
+       *
+       * @param {Integer} start
+       * @param {Integer} end
+       * @param {boolean} skipInput
+       * @returns {undefined}
+       */
+
 
       function setSelection(start, end, skipInput) {
         if (start === end) {
@@ -16585,6 +16897,13 @@
           display: 'inline'
         });
       }
+      /**
+       *
+       * @param {Float} mouseX
+       * @param {Float} mouseY
+       * @returns {Integer}
+       */
+
 
       function getIndexFromPoint(mouseX, mouseY) {
         // Position cursor here
@@ -16619,10 +16938,25 @@
 
         return charpos;
       }
+      /**
+       *
+       * @param {Float} mouseX
+       * @param {Float} mouseY
+       * @returns {undefined}
+       */
+
 
       function setCursorFromPoint(mouseX, mouseY) {
         setCursor(getIndexFromPoint(mouseX, mouseY));
       }
+      /**
+       *
+       * @param {Float} x
+       * @param {Float} y
+       * @param {boolean} apply
+       * @returns {undefined}
+       */
+
 
       function setEndSelectionFromPoint(x, y, apply) {
         var i1 = textinput.selectionStart;
@@ -16631,6 +16965,13 @@
         var end = Math.max(i1, i2);
         setSelection(start, end, !apply);
       }
+      /**
+       *
+       * @param {Float} xIn
+       * @param {Float} yIn
+       * @returns {module:math.XYObject}
+       */
+
 
       function screenToPt(xIn, yIn) {
         var out = {
@@ -16648,6 +16989,13 @@
 
         return out;
       }
+      /**
+       *
+       * @param {Float} xIn
+       * @param {Float} yIn
+       * @returns {module:math.XYObject}
+       */
+
 
       function ptToScreen(xIn, yIn) {
         var out = {
@@ -16674,11 +17022,23 @@
       }
       */
 
+      /**
+       *
+       * @param {Event} evt
+       * @returns {undefined}
+       */
+
 
       function selectAll(evt) {
         setSelection(0, curtext.textContent.length);
         $$9(this).unbind(evt);
       }
+      /**
+       *
+       * @param {Event} evt
+       * @returns {undefined}
+       */
+
 
       function selectWord(evt) {
         if (!allowDbl || !curtext) {
@@ -17008,7 +17368,8 @@
 
     this.svgCanvasToString = function () {
       // keep calling it until there are none to remove
-      while (removeUnusedDefElems() > 0) {}
+      while (removeUnusedDefElems() > 0) {} // eslint-disable-line no-empty
+
 
       pathActions$$1.clear(true); // Keep SVG-Edit comment on top
 
@@ -17069,13 +17430,12 @@
       if (elem) {
         cleanupElement(elem);
         var attrs = Array.from(elem.attributes);
-        var i;
         var childs = elem.childNodes;
         attrs.sort(function (a, b) {
           return a.name > b.name ? -1 : 1;
         });
 
-        for (i = 0; i < indent; i++) {
+        for (var i = 0; i < indent; i++) {
           out.push(' ');
         }
 
@@ -17116,19 +17476,19 @@
             }
 
             $$9.each(this.attributes, function (i, attr) {
-              var uri = attr.namespaceURI;
+              var u = attr.namespaceURI;
 
-              if (uri && !nsuris[uri] && nsMap[uri] !== 'xmlns' && nsMap[uri] !== 'xml') {
-                nsuris[uri] = true;
-                out.push(' xmlns:' + nsMap[uri] + '="' + uri + '"');
+              if (u && !nsuris[u] && nsMap[u] !== 'xmlns' && nsMap[u] !== 'xml') {
+                nsuris[u] = true;
+                out.push(' xmlns:' + nsMap[u] + '="' + u + '"');
               }
             });
           });
-          i = attrs.length;
+          var _i3 = attrs.length;
           var attrNames = ['width', 'height', 'xmlns', 'x', 'y', 'viewBox', 'id', 'overflow'];
 
-          while (i--) {
-            var attr = attrs[i];
+          while (_i3--) {
+            var attr = attrs[_i3];
             var attrVal = toXml(attr.value); // Namespaces have already been dealt with, so skip
 
             if (attr.nodeName.startsWith('xmlns:')) {
@@ -17149,13 +17509,13 @@
         } else {
           // Skip empty defs
           if (elem.nodeName === 'defs' && !elem.firstChild) {
-            return;
+            return '';
           }
 
           var mozAttrs = ['-moz-math-font-style', '_moz-math-font-style'];
 
-          for (i = attrs.length - 1; i >= 0; i--) {
-            var _attr = attrs[i];
+          for (var _i4 = attrs.length - 1; _i4 >= 0; _i4--) {
+            var _attr = attrs[_i4];
 
             var _attrVal = toXml(_attr.value); // remove bogus attributes added by Gecko
 
@@ -17211,27 +17571,29 @@
           indent++;
           var bOneLine = false;
 
-          for (i = 0; i < childs.length; i++) {
-            var child = childs.item(i);
+          for (var _i5 = 0; _i5 < childs.length; _i5++) {
+            var child = childs.item(_i5);
 
             switch (child.nodeType) {
               case 1:
                 // element node
                 out.push('\n');
-                out.push(this.svgToString(childs.item(i), indent));
+                out.push(this.svgToString(childs.item(_i5), indent));
                 break;
 
               case 3:
-                // text node
-                var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
+                {
+                  // text node
+                  var str = child.nodeValue.replace(/^\s+|\s+$/g, '');
 
-                if (str !== '') {
-                  bOneLine = true;
-                  out.push(String(toXml(str)));
+                  if (str !== '') {
+                    bOneLine = true;
+                    out.push(String(toXml(str)));
+                  }
+
+                  break;
                 }
 
-                break;
-
               case 4:
                 // cdata node
                 out.push('\n');
@@ -17258,7 +17620,7 @@
           if (!bOneLine) {
             out.push('\n');
 
-            for (i = 0; i < indent; i++) {
+            for (var _i6 = 0; _i6 < indent; _i6++) {
               out.push(' ');
             }
           }
@@ -17285,13 +17647,14 @@
     * Converts a given image file to a data URL when possible, then runs a given callback.
     * @function module:svgcanvas.SvgCanvas#embedImage
     * @param {string} src - The path/URL of the image
-    * @param {module:svgcanvas.ImageEmbeddedCallback} [callback] - Function to run when image data is found
     * @returns {Promise} Resolves to Data URL (string|false)
     */
 
 
-    this.embedImage = function (src, callback) {
+    this.embedImage = function (src) {
+      // Todo: Remove this Promise in favor of making an async/await `Image.load` utility
       return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
         // load in the image and once it's loaded, get the dimensions
         $$9(new Image()).load(function (response, status, xhr) {
           if (status === 'error') {
@@ -17315,11 +17678,6 @@
           }
 
           lastGoodImgUrl = src;
-
-          if (callback) {
-            callback(encodableImages[src]);
-          }
-
           resolve(encodableImages[src]);
         }).attr('src', src);
       });
@@ -17342,7 +17700,9 @@
     */
 
 
-    this.open = function () {};
+    this.open = function () {
+      /* */
+    };
     /**
     * Serializes the current drawing into SVG XML text and passes it to the 'saved' handler.
     * This function also includes the XML prolog. Clients of the `SvgCanvas` bind their save
@@ -17368,7 +17728,7 @@
       call('saved', str);
     };
     /**
-    * @typedef {GenericObject} module:svgcanvas.IssuesAndCodes
+    * @typedef {PlainObject} module:svgcanvas.IssuesAndCodes
     * @property {string[]} issueCodes The locale-independent code names
     * @property {string[]} issues The localized descriptions
     */
@@ -17427,13 +17787,6 @@
     * @property {string} exportWindowName A convenience for passing along a `window.name` to target a window on which the export could be added
     */
 
-    /**
-     * Function to run when image data is found
-     * @callback module:svgcanvas.ImageExportedCallback
-     * @param {module:svgcanvas.ImageExportedResults} obj
-     * @returns {undefined}
-     */
-
     /**
     * Generates a PNG (or JPG, BMP, WEBP) Data URL based on the current image,
     * then calls "exported" with an object including the string, image
@@ -17442,7 +17795,6 @@
     * @param {"PNG"|"JPEG"|"BMP"|"WEBP"|"ICO"} [imgType="PNG"]
     * @param {Float} [quality] Between 0 and 1
     * @param {string} [exportWindowName]
-    * @param {module:svgcanvas.ImageExportedCallback} [cb]
     * @param {PlainObject} [opts]
     * @param {boolean} [opts.avoidEvent]
     * @fires module:svgcanvas.SvgCanvas#event:exported
@@ -17450,29 +17802,72 @@
     * @returns {Promise} Resolves to {@link module:svgcanvas.ImageExportedResults}
     */
 
-    this.rasterExport = function (imgType, quality, exportWindowName, cb) {
-      var opts = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
-      var type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
-      var mimeType = 'image/' + type.toLowerCase();
-
-      var _getIssues = getIssues(),
-          issues = _getIssues.issues,
-          issueCodes = _getIssues.issueCodes;
-
-      var svg = this.svgCanvasToString();
-      return new Promise(
+    this.rasterExport =
+    /*#__PURE__*/
+    function () {
+      var _ref4 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref4 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee2(resolve, reject) {
-          var _ref5, c, dataURLType, datauri, bloburl, done;
+      regeneratorRuntime.mark(function _callee2(imgType, quality, exportWindowName) {
+        var opts,
+            type,
+            mimeType,
+            _getIssues,
+            issues,
+            issueCodes,
+            svg,
+            _ref5,
+            c,
+            _args2 = arguments;
 
-          return regeneratorRuntime.wrap(function _callee2$(_context2) {
-            while (1) {
-              switch (_context2.prev = _context2.next) {
-                case 0:
-                  done = function _ref6() {
+        return regeneratorRuntime.wrap(function _callee2$(_context2) {
+          while (1) {
+            switch (_context2.prev = _context2.next) {
+              case 0:
+                opts = _args2.length > 3 && _args2[3] !== undefined ? _args2[3] : {};
+                type = imgType === 'ICO' ? 'BMP' : imgType || 'PNG';
+                mimeType = 'image/' + type.toLowerCase();
+                _getIssues = getIssues(), issues = _getIssues.issues, issueCodes = _getIssues.issueCodes;
+                svg = this.svgCanvasToString();
+
+                if (canvg) {
+                  _context2.next = 10;
+                  break;
+                }
+
+                _context2.next = 8;
+                return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
+                  global: 'canvg'
+                });
+
+              case 8:
+                _ref5 = _context2.sent;
+                canvg = _ref5.canvg;
+
+              case 10:
+                if (!$$9('#export_canvas').length) {
+                  $$9('<canvas>', {
+                    id: 'export_canvas'
+                  }).hide().appendTo('body');
+                }
+
+                c = $$9('#export_canvas')[0];
+                c.width = canvas.contentW;
+                c.height = canvas.contentH;
+                _context2.next = 16;
+                return canvg(c, svg);
+
+              case 16:
+                return _context2.abrupt("return", new Promise(function (resolve, reject) {
+                  // eslint-disable-line promise/avoid-new
+                  var dataURLType = type.toLowerCase();
+                  var datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
+                  var bloburl;
+                  /**
+                   * Called when `bloburl` is available for export.
+                   * @returns {undefined}
+                   */
+
+                  function done() {
                     var obj = {
                       datauri: datauri,
                       bloburl: bloburl,
@@ -17489,72 +17884,33 @@
                       call('exported', obj);
                     }
 
-                    if (cb) {
-                      cb(obj);
-                    }
-
                     resolve(obj);
-                  };
-
-                  if (canvg) {
-                    _context2.next = 6;
-                    break;
                   }
 
-                  _context2.next = 4;
-                  return importSetGlobal(curConfig.canvgPath + 'canvg.js', {
-                    global: 'canvg'
-                  });
-
-                case 4:
-                  _ref5 = _context2.sent;
-                  canvg = _ref5.canvg;
-
-                case 6:
-                  if (!$$9('#export_canvas').length) {
-                    $$9('<canvas>', {
-                      id: 'export_canvas'
-                    }).hide().appendTo('body');
+                  if (c.toBlob) {
+                    c.toBlob(function (blob) {
+                      bloburl = createObjectURL(blob);
+                      done();
+                    }, mimeType, quality);
+                    return;
                   }
 
-                  c = $$9('#export_canvas')[0];
-                  c.width = canvas.contentW;
-                  c.height = canvas.contentH;
-                  _context2.next = 12;
-                  return canvg(c, svg);
-
-                case 12:
-                  dataURLType = type.toLowerCase();
-                  datauri = quality ? c.toDataURL('image/' + dataURLType, quality) : c.toDataURL('image/' + dataURLType);
-
-                  if (!c.toBlob) {
-                    _context2.next = 17;
-                    break;
-                  }
-
-                  c.toBlob(function (blob) {
-                    bloburl = createObjectURL(blob);
-                    done();
-                  }, mimeType, quality);
-                  return _context2.abrupt("return");
-
-                case 17:
                   bloburl = dataURLToObjectURL(datauri);
                   done();
+                }));
 
-                case 19:
-                case "end":
-                  return _context2.stop();
-              }
+              case 17:
+              case "end":
+                return _context2.stop();
             }
-          }, _callee2, this);
-        }));
+          }
+        }, _callee2, this);
+      }));
 
-        return function (_x4, _x5) {
-          return _ref4.apply(this, arguments);
-        };
-      }());
-    };
+      return function (_x4, _x5, _x6) {
+        return _ref4.apply(this, arguments);
+      };
+    }();
     /**
      * @external jsPDF
      */
@@ -17583,118 +17939,114 @@
     * @property {string} exportWindowName
     */
 
-    /**
-     * Function to run when PDF data is found
-     * @callback module:svgcanvas.PDFExportedCallback
-     * @param {module:svgcanvas.PDFExportedResults} obj
-     * @returns {undefined}
-     */
-
     /**
     * Generates a PDF based on the current image, then calls "exportedPDF" with
     * an object including the string, the data URL, and any issues found.
     * @function module:svgcanvas.SvgCanvas#exportPDF
     * @param {string} [exportWindowName] Will also be used for the download file name here
     * @param {external:jsPDF.OutputType} [outputType="dataurlstring"]
-    * @param {module:svgcanvas.PDFExportedCallback} [cb]
     * @fires module:svgcanvas.SvgCanvas#event:exportedPDF
     * @returns {Promise} Resolves to {@link module:svgcanvas.PDFExportedResults}
     */
 
 
-    this.exportPDF = function (exportWindowName) {
-      var outputType = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : isChrome() ? 'save' : undefined;
-      var cb = arguments.length > 2 ? arguments[2] : undefined;
-      var that = this;
-      return new Promise(
+    this.exportPDF =
+    /*#__PURE__*/
+    function () {
+      var _ref6 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref7 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee3(resolve, reject) {
-          var modularVersion, res, orientation, unit, doc, docTitle, _getIssues2, issues, issueCodes, svg, obj;
+      regeneratorRuntime.mark(function _callee3(exportWindowName) {
+        var outputType,
+            modularVersion,
+            res,
+            orientation,
+            unit,
+            doc,
+            docTitle,
+            _getIssues2,
+            issues,
+            issueCodes,
+            svg,
+            obj,
+            _args3 = arguments;
 
-          return regeneratorRuntime.wrap(function _callee3$(_context3) {
-            while (1) {
-              switch (_context3.prev = _context3.next) {
-                case 0:
-                  if (window.jsPDF) {
-                    _context3.next = 6;
-                    break;
-                  }
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
+          while (1) {
+            switch (_context3.prev = _context3.next) {
+              case 0:
+                outputType = _args3.length > 1 && _args3[1] !== undefined ? _args3[1] : isChrome() ? 'save' : undefined;
 
-                  _context3.next = 3;
-                  return importScript([// We do not currently have these paths configurable as they are
-                  //   currently global-only, so not Rolled-up
-                  'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
+                if (window.jsPDF) {
+                  _context3.next = 7;
+                  break;
+                }
 
-                case 3:
-                  modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
+                _context3.next = 4;
+                return importScript([// We do not currently have these paths configurable as they are
+                //   currently global-only, so not Rolled-up
+                'jspdf/underscore-min.js', 'jspdf/jspdf.min.js']);
 
-                  _context3.next = 6;
-                  return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
-                    type: modularVersion ? 'module' : 'text/javascript'
-                  });
+              case 4:
+                modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false; // Todo: Switch to `import()` when widely supported and available (also allow customization of path)
 
-                case 6:
-                  res = getResolution();
-                  orientation = res.w > res.h ? 'landscape' : 'portrait';
-                  unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
-                  // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
+                _context3.next = 7;
+                return importScript(curConfig.jspdfPath + 'jspdf.plugin.svgToPdf.js', {
+                  type: modularVersion ? 'module' : 'text/javascript'
+                });
 
-                  doc = jsPDF({
-                    orientation: orientation,
-                    unit: unit,
-                    format: [res.w, res.h] // , compressPdf: true
+              case 7:
+                res = getResolution();
+                orientation = res.w > res.h ? 'landscape' : 'portrait';
+                unit = 'pt'; // curConfig.baseUnit; // We could use baseUnit, but that is presumably not intended for export purposes
+                // Todo: Give options to use predefined jsPDF formats like "a4", etc. from pull-down (with option to keep customizable)
 
-                  });
-                  docTitle = getDocumentTitle();
-                  doc.setProperties({
-                    title: docTitle
-                    /* ,
-                    subject: '',
-                    author: '',
-                    keywords: '',
-                    creator: '' */
+                doc = jsPDF({
+                  orientation: orientation,
+                  unit: unit,
+                  format: [res.w, res.h] // , compressPdf: true
 
-                  });
-                  _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
-                  svg = that.svgCanvasToString();
-                  doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
-                  //  window; todo: configure this and other export
-                  //  options to optionally work in this manner as
-                  //  opposed to opening a new tab
+                });
+                docTitle = getDocumentTitle();
+                doc.setProperties({
+                  title: docTitle
+                  /* ,
+                  subject: '',
+                  author: '',
+                  keywords: '',
+                  creator: '' */
 
-                  outputType = outputType || 'dataurlstring';
-                  obj = {
-                    svg: svg,
-                    issues: issues,
-                    issueCodes: issueCodes,
-                    exportWindowName: exportWindowName,
-                    outputType: outputType
-                  };
-                  obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+                });
+                _getIssues2 = getIssues(), issues = _getIssues2.issues, issueCodes = _getIssues2.issueCodes;
+                svg = this.svgCanvasToString();
+                doc.addSVG(svg, 0, 0); // doc.output('save'); // Works to open in a new
+                //  window; todo: configure this and other export
+                //  options to optionally work in this manner as
+                //  opposed to opening a new tab
 
-                  if (cb) {
-                    cb(obj);
-                  }
+                outputType = outputType || 'dataurlstring';
+                obj = {
+                  svg: svg,
+                  issues: issues,
+                  issueCodes: issueCodes,
+                  exportWindowName: exportWindowName,
+                  outputType: outputType
+                };
+                obj.output = doc.output(outputType, outputType === 'save' ? exportWindowName || 'svg.pdf' : undefined);
+                call('exportedPDF', obj);
+                return _context3.abrupt("return", obj);
 
-                  resolve(obj);
-                  call('exportedPDF', obj);
-
-                case 21:
-                case "end":
-                  return _context3.stop();
-              }
+              case 21:
+              case "end":
+                return _context3.stop();
             }
-          }, _callee3, this);
-        }));
+          }
+        }, _callee3, this);
+      }));
 
-        return function (_x6, _x7) {
-          return _ref7.apply(this, arguments);
-        };
-      }());
-    };
+      return function (_x7) {
+        return _ref6.apply(this, arguments);
+      };
+    }();
     /**
     * Returns the current drawing as raw SVG XML text.
     * @function module:svgcanvas.SvgCanvas#getSvgString
@@ -17888,18 +18240,18 @@
       }
 
       elems.each(function () {
-        var grad = this;
+        var grad = this; // eslint-disable-line consistent-this
 
         if ($$9(grad).attr('gradientUnits') === 'userSpaceOnUse') {
           // TODO: Support more than one element with this ref by duplicating parent grad
-          var _elems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
+          var fillStrokeElems = $$9(svgcontent).find('[fill="url(#' + grad.id + ')"],[stroke="url(#' + grad.id + ')"]');
 
-          if (!_elems.length) {
+          if (!fillStrokeElems.length) {
             return;
           } // get object's bounding box
 
 
-          var bb = getBBox(_elems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
+          var bb = getBBox(fillStrokeElems[0]); // This will occur if the element is inside a <defs> or a <symbol>,
           // in which we shouldn't need to convert anyway.
 
           if (!bb) {
@@ -17991,8 +18343,8 @@
 
         if (vb) {
           var nums = vb.split(' ');
-          pos.x -= +nums[0];
-          pos.y -= +nums[1];
+          pos.x -= Number(nums[0]);
+          pos.y -= Number(nums[1]);
         } // Not ideal, but works
 
 
@@ -18058,7 +18410,7 @@
           try {
             recalculateDimensions(n);
           } catch (e) {
-            console.log(e);
+            console.log(e); // eslint-disable-line no-console
           }
         }); // Give ID for any visible element missing one
 
@@ -18076,7 +18428,7 @@
 
         addCommandToHistory(batchCmd);
       } else {
-        console.log('Unexpected element to ungroup:', elem);
+        console.log('Unexpected element to ungroup:', elem); // eslint-disable-line no-console
       }
     };
     /**
@@ -18132,7 +18484,8 @@
 
 
         content.find('image').each(function () {
-          var image = this;
+          var image = this; // eslint-disable-line consistent-this
+
           preventClickDefault(image);
           var val = getHref(this);
 
@@ -18246,7 +18599,8 @@
         if (!preventUndo) addCommandToHistory(batchCmd);
         call('changed', [svgcontent]);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
+
         return false;
       }
 
@@ -18309,12 +18663,12 @@
           vb = innervb ? innervb.split(' ') : [0, 0, innerw, innerh];
 
           for (j = 0; j < 4; ++j) {
-            vb[j] = +vb[j];
+            vb[j] = Number(vb[j]);
           } // TODO: properly handle preserveAspectRatio
 
 
           var // canvasw = +svgcontent.getAttribute('width'),
-          canvash = +svgcontent.getAttribute('height'); // imported content should be 1/3 of the canvas on its largest dimension
+          canvash = Number(svgcontent.getAttribute('height')); // imported content should be 1/3 of the canvas on its largest dimension
 
           if (innerh > innerw) {
             ts = 'scale(' + canvash / 3 / vb[3] + ')';
@@ -18373,7 +18727,8 @@
         addCommandToHistory(batchCmd);
         call('changed', [svgcontent]);
       } catch (e) {
-        console.log(e);
+        console.log(e); // eslint-disable-line no-console
+
         return null;
       } // we want to return the element so we can automatically select it
 
@@ -18383,8 +18738,27 @@
     //  canvas is a dependency for all of these
 
 
-    ['identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer', 'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition', 'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers', 'leaveContext', 'setContext'].forEach(function (prop) {
-      canvas[prop] = draw[prop];
+    var dr = {
+      identifyLayers: identifyLayers,
+      createLayer: createLayer,
+      cloneLayer: cloneLayer,
+      deleteCurrentLayer: deleteCurrentLayer,
+      setCurrentLayer: setCurrentLayer,
+      renameCurrentLayer: renameCurrentLayer,
+      setCurrentLayerPosition: setCurrentLayerPosition,
+      setLayerVisibility: setLayerVisibility,
+      moveSelectedToLayer: moveSelectedToLayer,
+      mergeLayer: mergeLayer,
+      mergeAllLayers: mergeAllLayers,
+      leaveContext: leaveContext,
+      setContext: setContext
+    };
+    Object.entries(dr).forEach(function (_ref7) {
+      var _ref8 = _slicedToArray(_ref7, 2),
+          prop = _ref8[0],
+          propVal = _ref8[1];
+
+      canvas[prop] = propVal;
     });
     init$3(
     /**
@@ -18515,6 +18889,7 @@
 
     this.setUiStrings = function (strs) {
       Object.assign(uiStrings, strs.notification);
+      $$9 = jQueryPluginDBox($$9, strs.common);
       setUiStrings(strs);
     };
     /**
@@ -18530,8 +18905,9 @@
     };
     /**
     * @function module:svgcanvas.SvgCanvas#getTitle
-    * @param {Element} elem
-    * @returns {string|undefined} the current group/SVG's title contents
+    * @param {Element} [elem]
+    * @returns {string|undefined} the current group/SVG's title contents or
+    * `undefined` if no element is passed nd there are no selected elements.
     */
 
 
@@ -18539,7 +18915,7 @@
       elem = elem || selectedElements[0];
 
       if (!elem) {
-        return;
+        return undefined;
       }
 
       elem = $$9(elem).data('gsvg') || $$9(elem).data('symbol') || elem;
@@ -18759,6 +19135,7 @@
       var bb;
 
       var calcZoom = function calcZoom(bb) {
+        // eslint-disable-line no-shadow
         if (!bb) {
           return false;
         }
@@ -18790,28 +19167,34 @@
 
       switch (val) {
         case 'selection':
-          if (!selectedElements[0]) {
-            return;
+          {
+            if (!selectedElements[0]) {
+              return undefined;
+            }
+
+            var selectedElems = $$9.map(selectedElements, function (n) {
+              if (n) {
+                return n;
+              }
+
+              return undefined;
+            });
+            bb = getStrokedBBoxDefaultVisible(selectedElems);
+            break;
           }
 
-          var selectedElems = $$9.map(selectedElements, function (n) {
-            if (n) {
-              return n;
-            }
-          });
-          bb = getStrokedBBoxDefaultVisible(selectedElems);
-          break;
-
         case 'canvas':
-          var res = getResolution();
-          spacer = 0.95;
-          bb = {
-            width: res.w,
-            height: res.h,
-            x: 0,
-            y: 0
-          };
-          break;
+          {
+            var res = getResolution();
+            spacer = 0.95;
+            bb = {
+              width: res.w,
+              height: res.h,
+              x: 0,
+              y: 0
+            };
+            break;
+          }
 
         case 'content':
           bb = getStrokedBBoxDefaultVisible();
@@ -18822,7 +19205,7 @@
           break;
 
         default:
-          return;
+          return undefined;
       }
 
       return calcZoom(bb);
@@ -18991,6 +19374,11 @@
         type: 'solidColor'
       };
       var elems = [];
+      /**
+       *
+       * @param {Element} e
+       * @returns {undefined}
+       */
 
       function addNonG(e) {
         if (e.nodeName !== 'g') {
@@ -19006,14 +19394,12 @@
         if (elem) {
           if (elem.tagName === 'g') {
             walkTree(elem, addNonG);
-          } else {
-            if (type === 'fill') {
-              if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
-                elems.push(elem);
-              }
-            } else {
+          } else if (type === 'fill') {
+            if (elem.tagName !== 'polyline' && elem.tagName !== 'line') {
               elems.push(elem);
             }
+          } else {
+            elems.push(elem);
           }
         }
       }
@@ -19083,7 +19469,7 @@
             var gradAttrs = $$9(grad).attr(radAttrs);
             var ogAttrs = $$9(og).attr(radAttrs);
             var diff = false;
-            $$9.each(radAttrs, function (i, attr) {
+            $$9.each(radAttrs, function (j, attr) {
               if (gradAttrs[attr] !== ogAttrs[attr]) {
                 diff = true;
               }
@@ -19199,6 +19585,11 @@
 
       curProperties.stroke_width = val;
       var elems = [];
+      /**
+       *
+       * @param {Element} e
+       * @returns {undefined}
+       */
 
       function addNonG(e) {
         if (e.nodeName !== 'g') {
@@ -19405,7 +19796,7 @@
           }
 
           if (isWebkit()) {
-            console.log('e', elem);
+            // console.log('e', elem); // eslint-disable-line no-console
             elem.removeAttribute('filter');
             elem.setAttribute('filter', 'url(#' + elem.id + '_blur)');
           }
@@ -19414,6 +19805,11 @@
           canvas.setBlurOffsets(filter, val);
         }
       };
+      /**
+       *
+       * @returns {undefined}
+       */
+
 
       function finishChange() {
         var bCmd = canvas.undoMgr.finishUndoableChange();
@@ -19426,29 +19822,26 @@
       * Sets the `x`, `y`, `width`, `height` values of the filter element in order to
       * make the blur not be clipped. Removes them if not neeeded.
       * @function module:svgcanvas.SvgCanvas#setBlurOffsets
-      * @param {Element} filter - The filter DOM element to update
+      * @param {Element} filterElem - The filter DOM element to update
       * @param {Float} stdDev - The standard deviation value on which to base the offset size
       * @returns {undefined}
       */
 
 
-      canvas.setBlurOffsets = function (filter, stdDev) {
+      canvas.setBlurOffsets = function (filterElem, stdDev) {
         if (stdDev > 3) {
           // TODO: Create algorithm here where size is based on expected blur
-          assignAttributes(filter, {
+          assignAttributes(filterElem, {
             x: '-50%',
             y: '-50%',
             width: '200%',
             height: '200%'
-          }, 100);
-        } else {
-          // Removing these attributes hides text in Chrome (see Issue 579)
-          if (!isWebkit()) {
-            filter.removeAttribute('x');
-            filter.removeAttribute('y');
-            filter.removeAttribute('width');
-            filter.removeAttribute('height');
-          }
+          }, 100); // Removing these attributes hides text in Chrome (see Issue 579)
+        } else if (!isWebkit()) {
+          filterElem.removeAttribute('x');
+          filterElem.removeAttribute('y');
+          filterElem.removeAttribute('width');
+          filterElem.removeAttribute('height');
         }
       };
       /**
@@ -19530,7 +19923,7 @@
       // should only have one element selected
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         return selected.getAttribute('font-weight') === 'bold';
       }
 
@@ -19547,7 +19940,7 @@
     this.setBold = function (b) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         changeSelectedAttribute('font-weight', b ? 'bold' : 'normal');
       }
 
@@ -19565,7 +19958,7 @@
     this.getItalic = function () {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         return selected.getAttribute('font-style') === 'italic';
       }
 
@@ -19582,7 +19975,7 @@
     this.setItalic = function (i) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'text' && selectedElements[1] == null) {
+      if (!isNullish(selected) && selected.tagName === 'text' && isNullish(selectedElements[1])) {
         changeSelectedAttribute('font-style', i ? 'italic' : 'normal');
       }
 
@@ -19670,7 +20063,7 @@
     this.getText = function () {
       var selected = selectedElements[0];
 
-      if (selected == null) {
+      if (isNullish(selected)) {
         return '';
       }
 
@@ -19783,7 +20176,7 @@
     this.setRectRadius = function (val) {
       var selected = selectedElements[0];
 
-      if (selected != null && selected.tagName === 'rect') {
+      if (!isNullish(selected) && selected.tagName === 'rect') {
         var r = selected.getAttribute('rx');
 
         if (r !== String(val)) {
@@ -19845,14 +20238,14 @@
 
 
     this.convertToPath = function (elem, getBBox$$1) {
-      if (elem == null) {
+      if (isNullish(elem)) {
         var elems = selectedElements;
-        $$9.each(elems, function (i, elem) {
-          if (elem) {
-            canvas.convertToPath(elem);
+        $$9.each(elems, function (i, el) {
+          if (el) {
+            canvas.convertToPath(el);
           }
         });
-        return;
+        return undefined;
       }
 
       if (getBBox$$1) {
@@ -19873,7 +20266,7 @@
         opacity: curShape.opacity,
         visibility: 'hidden'
       };
-      return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, history, addCommandToHistory);
+      return convertToPath(elem, attrs, addSVGElementFromJson, pathActions$$1, clearSelection, addToSelection, hstry, addCommandToHistory);
     };
     /**
     * This function makes the changes to the elements. It does not add the change
@@ -19893,13 +20286,12 @@
 
       elems = elems || selectedElements;
       var i = elems.length;
-      var noXYElems = ['g', 'polyline', 'path'];
-      var goodGAttrs = ['transform', 'opacity', 'filter'];
+      var noXYElems = ['g', 'polyline', 'path']; // const goodGAttrs = ['transform', 'opacity', 'filter'];
 
       var _loop = function _loop() {
         var elem = elems[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           return "continue";
         } // Set x,y vals on elements that don't have them
 
@@ -19911,14 +20303,13 @@
           canvas.moveSelectedElements(diffX * currentZoom, diffY * currentZoom, true);
           return "continue";
         } // only allow the transform/opacity/filter attribute to change on <g> elements, slightly hacky
-        // TODO: FIXME: This doesn't seem right. Where's the body of this if statement?
+        // TODO: FIXME: Missing statement body
+        // if (elem.tagName === 'g' && goodGAttrs.includes(attr)) {}
 
 
-        if (elem.tagName === 'g' && goodGAttrs.includes(attr)) ;
-
         var oldval = attr === '#text' ? elem.textContent : elem.getAttribute(attr);
 
-        if (oldval == null) {
+        if (isNullish(oldval)) {
           oldval = '';
         }
 
@@ -20062,7 +20453,7 @@
       for (var i = 0; i < len; ++i) {
         var selected = selectedElements[i];
 
-        if (selected == null) {
+        if (isNullish(selected)) {
           break;
         }
 
@@ -20152,6 +20543,12 @@
 
       var changedIDs = {}; // Recursively replace IDs and record the changes
 
+      /**
+       *
+       * @param {module:svgcanvas.SVGAsJSON} elem
+       * @returns {undefined}
+       */
+
       function checkIDs(elem) {
         if (elem.attr && elem.attr.id) {
           changedIDs[elem.attr.id] = getNextId();
@@ -20280,7 +20677,7 @@
       while (i--) {
         var elem = selectedElements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           continue;
         }
 
@@ -20307,7 +20704,7 @@
     * @function module:svgcanvas.SvgCanvas#pushGroupProperties
     * @param {SVGAElement|SVGGElement} g
     * @param {boolean} undoable
-    * @returns {undefined}
+    * @returns {BatchCommand|undefined}
     */
 
 
@@ -20491,6 +20888,8 @@
       if (undoable && !batchCmd.isEmpty()) {
         return batchCmd;
       }
+
+      return undefined;
     };
     /**
     * Unwraps all the elements in a selected group (`g`) element. This requires
@@ -20587,7 +20986,7 @@
           _selectedElements2 = _slicedToArray(_selectedElements, 1),
           selected = _selectedElements2[0];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         var t = selected;
         var oldParent = t.parentNode;
         var oldNextSibling = t.nextSibling;
@@ -20614,7 +21013,7 @@
           _selectedElements4 = _slicedToArray(_selectedElements3, 1),
           selected = _selectedElements4[0];
 
-      if (selected != null) {
+      if (!isNullish(selected)) {
         var t = selected;
         var oldParent = t.parentNode;
         var oldNextSibling = t.nextSibling;
@@ -20671,10 +21070,11 @@
             foundCur = true;
           }
 
-          return;
+          return true;
         }
 
-        closest = this;
+        closest = this; // eslint-disable-line consistent-this
+
         return false;
       });
 
@@ -20700,7 +21100,7 @@
     * @param {Float} dy - Float with the distance to move on the y-axis
     * @param {boolean} undoable - Boolean indicating whether or not the action should be undoable
     * @fires module:svgcanvas.SvgCanvas#event:changed
-    * @returns {BatchCommand} Batch command for the move
+    * @returns {BatchCommand|undefined} Batch command for the move
     */
 
 
@@ -20719,7 +21119,7 @@
       while (i--) {
         var selected = selectedElements[i];
 
-        if (selected != null) {
+        if (!isNullish(selected)) {
           // if (i === 0) {
           //   selectedBBoxes[0] = utilsGetBBox(selected);
           // }
@@ -20767,6 +21167,8 @@
         call('changed', selectedElements);
         return batchCmd;
       }
+
+      return undefined;
     };
     /**
     * Create deep DOM copies (clones) of all selected elements and move them slightly
@@ -20783,9 +21185,15 @@
       var batchCmd = new BatchCommand$1('Clone Elements'); // find all the elements selected (stop at first null)
 
       var len = selectedElements.length;
+      /**
+       * Sorts an array numerically and ascending.
+       * @param {Element} a
+       * @param {Element} b
+       * @returns {Integer}
+       */
 
       function sortfunction(a, b) {
-        return $$9(b).index() - $$9(a).index(); // causes an array to be sorted numerically and ascending
+        return $$9(b).index() - $$9(a).index();
       }
 
       selectedElements.sort(sortfunction);
@@ -20793,7 +21201,7 @@
       for (i = 0; i < len; ++i) {
         elem = selectedElements[i];
 
-        if (elem == null) {
+        if (isNullish(elem)) {
           break;
         }
       } // use slice to quickly get the subset of elements we need
@@ -20846,7 +21254,7 @@
           curheight = Number.MIN_VALUE;
 
       for (var i = 0; i < len; ++i) {
-        if (selectedElements[i] == null) {
+        if (isNullish(selectedElements[i])) {
           break;
         }
 
@@ -20911,45 +21319,45 @@
       var dx = new Array(len);
       var dy = new Array(len);
 
-      for (var _i2 = 0; _i2 < len; ++_i2) {
-        if (selectedElements[_i2] == null) {
+      for (var _i7 = 0; _i7 < len; ++_i7) {
+        if (isNullish(selectedElements[_i7])) {
           break;
         } // const elem = selectedElements[i];
 
 
-        var bbox = bboxes[_i2];
-        dx[_i2] = 0;
-        dy[_i2] = 0;
+        var bbox = bboxes[_i7];
+        dx[_i7] = 0;
+        dy[_i7] = 0;
 
         switch (type) {
           case 'l':
             // left (horizontal)
-            dx[_i2] = minx - bbox.x;
+            dx[_i7] = minx - bbox.x;
             break;
 
           case 'c':
             // center (horizontal)
-            dx[_i2] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
+            dx[_i7] = (minx + maxx) / 2 - (bbox.x + bbox.width / 2);
             break;
 
           case 'r':
             // right (horizontal)
-            dx[_i2] = maxx - (bbox.x + bbox.width);
+            dx[_i7] = maxx - (bbox.x + bbox.width);
             break;
 
           case 't':
             // top (vertical)
-            dy[_i2] = miny - bbox.y;
+            dy[_i7] = miny - bbox.y;
             break;
 
           case 'm':
             // middle (vertical)
-            dy[_i2] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
+            dy[_i7] = (miny + maxy) / 2 - (bbox.y + bbox.height / 2);
             break;
 
           case 'b':
             // bottom (vertical)
-            dy[_i2] = maxy - (bbox.y + bbox.height);
+            dy[_i7] = maxy - (bbox.y + bbox.height);
             break;
         }
       }
@@ -21108,7 +21516,7 @@
         return;
       }
 
-      if (curElem == null) {
+      if (isNullish(curElem)) {
         num = next ? allElems.length - 1 : 0;
         elem = allElems[num];
       } else {
@@ -21230,7 +21638,7 @@
    * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
   */
   // We *do* want to allow the escape key within textareas (and possibly tab too), so add the condition `n.which !== 27`
-  function jqPluginJSHotkeys (b) {
+  function jQueryPluginJSHotkeys (b) {
     b.hotkeys = {
       version: "0.8",
       specialKeys: {
@@ -21382,7 +21790,7 @@
    * http://benalman.com/about/license/
    */
   // For sake of modules, added this wrapping export and changed `this` to `window`
-  function jqPluginBBQ (jQuery) {
+  function jQueryPluginBBQ (jQuery) {
     (function ($, p) {
       var i,
           m = Array.prototype.slice,
@@ -21732,6 +22140,7 @@
     return jQuery;
   }
 
+  // Todo: Move to own module (and have it import a modular base64 encoder)
   /**
    * SVG Icon Loader 2.0
    *
@@ -21830,17 +22239,23 @@
    * @param {external:jQuery} $ Its keys include all icon IDs and the values, the icon as a jQuery object
    * @returns {external:jQuery} The enhanced jQuery object
   */
-  function jqPluginSVGIcons ($) {
+
+  function jQueryPluginSVGIcons($) {
     var svgIcons = {};
     var fixIDs;
+    /**
+     * List of raster images with each
+     * key being the SVG icon ID to replace, and the value the image file name
+     * @typedef {PlainObject.<string, string>} external:jQuery.svgIcons.Fallback
+    */
+
     /**
     * @function external:jQuery.svgIcons
     * @param {string} file The location of a local SVG or SVGz file
     * @param {PlainObject} [opts]
     * @param {Float} [opts.w] The icon widths
     * @param {Float} [opts.h] The icon heights
-    * @param {PlainObject.<string, string>} [opts.fallback] List of raster images with each
-      key being the SVG icon ID to replace, and the value the image file name
+    * @param {external:jQuery.svgIcons.Fallback} [opts.fallback]
     * @param {string} [opts.fallback_path] The path to use for all images
       listed under "fallback"
     * @param {boolean} [opts.replace] If set to `true`, HTML elements will be replaced by,
@@ -21872,7 +22287,7 @@
           iconsMade = false,
           dataLoaded = false,
           loadAttempts = 0;
-      var isOpera = !!window.opera,
+      var isOpera = Boolean(window.opera),
           // ua = navigator.userAgent,
       // isSafari = (ua.includes('Safari/') && !ua.includes('Chrome/')),
       dataPre = 'data:image/svg+xml;charset=utf-8;base64,';
@@ -21910,24 +22325,29 @@
               $(function () {
                 useFallback();
               });
-            } else {
-              if (err.responseText) {
-                svgdoc = parser.parseFromString(err.responseText, 'text/xml');
+            } else if (err.responseText) {
+              svgdoc = parser.parseFromString(err.responseText, 'text/xml');
 
-                if (!svgdoc.childNodes.length) {
-                  $(useFallback);
-                }
-
-                $(function () {
-                  getIcons('ajax');
-                });
-              } else {
+              if (!svgdoc.childNodes.length) {
                 $(useFallback);
               }
+
+              $(function () {
+                getIcons('ajax');
+              });
+            } else {
+              $(useFallback);
             }
           }
         });
       }
+      /**
+       *
+       * @param {"ajax"|0|undefined} evt
+       * @param {boolean} [noWait]
+       * @returns {undefined}
+       */
+
 
       function getIcons(evt, noWait) {
         if (evt !== 'ajax') {
@@ -21975,6 +22395,15 @@
           }, 500);
         }
       }
+      /**
+       *
+       * @param {external:jQuery} target
+       * @param {external:jQuery} icon A wrapped `defs` or Image
+       * @param {string} id SVG icon ID
+       * @param {string} setID
+       * @returns {undefined}
+       */
+
 
       function setIcon(target, icon, id, setID) {
         if (isOpera) icon.css('visibility', 'hidden');
@@ -21996,6 +22425,11 @@
       }
 
       var holder;
+      /**
+       * @param {external:jQuery} icon A wrapped `defs` or Image
+       * @param {string} id SVG icon ID
+       * @returns {undefined}
+       */
 
       function addIcon(icon, id) {
         if (opts.id_match === undefined || opts.id_match !== false) {
@@ -22004,8 +22438,17 @@
 
         svgIcons[id] = icon;
       }
+      /**
+       *
+       * @param {boolean} [toImage]
+       * @param {external:jQuery.svgIcons.Fallback} [fallback]
+       * @returns {undefined}
+       */
 
-      function makeIcons(toImage, fallback) {
+
+      function makeIcons() {
+        var toImage = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
+        var fallback = arguments.length > 1 ? arguments[1] : undefined;
         if (iconsMade) return;
         if (opts.no_img) toImage = false;
         var tempHolder;
@@ -22108,7 +22551,7 @@
 
         if (isOpera) {
           idElems = defs.find('*').filter(function () {
-            return !!this.id;
+            return Boolean(this.id);
           });
         } else {
           idElems = defs.find('[id]');
@@ -22158,13 +22601,17 @@
         });
         return svgEl;
       };
+      /**
+       * @returns {undefined}
+       */
+
 
       function useFallback() {
         if (file.includes('.svgz')) {
           var regFile = file.replace('.svgz', '.svg');
 
           if (window.console) {
-            console.log('.svgz failed, trying with .svg');
+            console.log('.svgz failed, trying with .svg'); // eslint-disable-line no-console
           }
 
           $.svgIcons(regFile, opts);
@@ -22172,38 +22619,6 @@
           makeIcons(false, opts.fallback);
         }
       }
-
-      function encode64(input) {
-        // base64 strings are 4/3 larger than the original string
-        if (window.btoa) return window.btoa(input);
-        var _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-        var output = new Array(Math.floor((input.length + 2) / 3) * 4);
-        var i = 0,
-            p = 0;
-
-        do {
-          var chr1 = input.charCodeAt(i++);
-          var chr2 = input.charCodeAt(i++);
-          var chr3 = input.charCodeAt(i++);
-          var enc1 = chr1 >> 2;
-          var enc2 = (chr1 & 3) << 4 | chr2 >> 4;
-          var enc3 = (chr2 & 15) << 2 | chr3 >> 6;
-          var enc4 = chr3 & 63;
-
-          if (isNaN(chr2)) {
-            enc3 = enc4 = 64;
-          } else if (isNaN(chr3)) {
-            enc4 = 64;
-          }
-
-          output[p++] = _keyStr.charAt(enc1);
-          output[p++] = _keyStr.charAt(enc2);
-          output[p++] = _keyStr.charAt(enc3);
-          output[p++] = _keyStr.charAt(enc4);
-        } while (i < input.length);
-
-        return output.join('');
-      }
     };
     /**
     * @function external:jQuery.getSvgIcon
@@ -22306,8 +22721,12 @@
 
   if (!window.console) {
     window.console = {
-      log: function log(str) {},
-      dir: function dir(str) {}
+      log: function log(str) {
+        /* */
+      },
+      dir: function dir(str) {
+        /* */
+      }
     };
   }
   /**
@@ -22320,7 +22739,7 @@
   */
 
 
-  function jqPluginJGraduate ($) {
+  function jQueryPluginJGraduate($) {
     if (!$.loadingStylesheets) {
       $.loadingStylesheets = [];
     }
@@ -22486,25 +22905,48 @@
 
     };
     var isGecko = navigator.userAgent.includes('Gecko/');
+    /**
+    * @typedef {PlainObject.<string, string>} module:jGraduate.Attrs
+    */
+
+    /**
+    * @param {SVGElement} elem
+    * @param {module:jGraduate.Attrs} attrs
+    * @returns {undefined}
+    */
 
     function setAttrs(elem, attrs) {
       if (isGecko) {
-        for (var aname in attrs) {
-          elem.setAttribute(aname, attrs[aname]);
-        }
+        Object.entries(attrs).forEach(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              aname = _ref2[0],
+              val = _ref2[1];
+
+          elem.setAttribute(aname, val);
+        });
       } else {
-        for (var _aname in attrs) {
-          var val = attrs[_aname],
-              prop = elem[_aname];
+        Object.entries(attrs).forEach(function (_ref3) {
+          var _ref4 = _slicedToArray(_ref3, 2),
+              aname = _ref4[0],
+              val = _ref4[1];
+
+          var prop = elem[aname];
 
           if (prop && prop.constructor === 'SVGLength') {
             prop.baseVal.value = val;
           } else {
-            elem.setAttribute(_aname, val);
+            elem.setAttribute(aname, val);
           }
-        }
+        });
       }
     }
+    /**
+    * @param {string} name
+    * @param {module:jGraduate.Attrs} attrs
+    * @param {Element} newparent
+    * @returns {SVGElement}
+    */
+
 
     function mkElem(name, attrs, newparent) {
       var elem = document.createElementNS(ns.svg, name);
@@ -22560,7 +23002,8 @@
             idref = '#' + $this.attr('id') + ' ';
 
         if (!idref) {
-          alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
+          /* await */
+          $.alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
           return;
         }
 
@@ -22686,19 +23129,21 @@
                 break;
 
               case 'inverse':
-                // Invert current color for second stop
-                var inverted = '';
+                {
+                  // Invert current color for second stop
+                  var inverted = '';
 
-                for (var i = 0; i < 6; i += 2) {
-                  // const ch = color.substr(i, 2);
-                  var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
-                  if (inv.length < 2) inv = 0 + inv;
-                  inverted += inv;
+                  for (var i = 0; i < 6; i += 2) {
+                    // const ch = color.substr(i, 2);
+                    var inv = (255 - parseInt(color.substr(i, 2), 16)).toString(16);
+                    if (inv.length < 2) inv = 0 + inv;
+                    inverted += inv;
+                  }
+
+                  mkStop(1, '#' + inverted, 1);
+                  break;
                 }
 
-                mkStop(1, '#' + inverted, 1);
-                break;
-
               case 'white':
                 mkStop(1, '#ffffff', 1);
                 break;
@@ -22800,16 +23245,25 @@
             $elem.css(cssName, this.value * MAX);
           }).change();
         });
+        /**
+         *
+         * @param {Float} n
+         * @param {Float|string} colr
+         * @param {Float} opac
+         * @param {boolean} [sel]
+         * @param {SVGStopElement} [stopElem]
+         * @returns {SVGStopElement}
+         */
 
-        function mkStop(n, color, opac, sel, stopElem) {
+        function mkStop(n, colr, opac, sel, stopElem) {
           var stop = stopElem || mkElem('stop', {
-            'stop-color': color,
+            'stop-color': colr,
             'stop-opacity': opac,
             offset: n
           }, curGradient);
 
           if (stopElem) {
-            color = stopElem.getAttribute('stop-color');
+            colr = stopElem.getAttribute('stop-color');
             opac = stopElem.getAttribute('stop-opacity');
             n = stopElem.getAttribute('offset');
           } else {
@@ -22825,7 +23279,7 @@
           }, stopGroup);
           var path = mkElem('path', {
             d: pickerD,
-            fill: color,
+            fill: colr,
             'fill-opacity': opac,
             transform: 'translate(' + (10 + n * MAX) + ', 26)',
             stroke: '#000',
@@ -22840,8 +23294,9 @@
             return false;
           }).data('stop', stop).data('bg', pathbg).dblclick(function () {
             $('div.jGraduate_LightBox').show();
-            var colorhandle = this;
-            var stopOpacity = +stop.getAttribute('stop-opacity') || 1;
+            var colorhandle = this; // eslint-disable-line consistent-this
+
+            var stopOpacity = Number(stop.getAttribute('stop-opacity')) || 1;
             var stopColor = stop.getAttribute('stop-color') || 1;
             var thisAlpha = (parseFloat(stopOpacity) * 255).toString(16);
 
@@ -22849,7 +23304,7 @@
               thisAlpha = '0' + thisAlpha;
             }
 
-            color = stopColor.substr(1) + thisAlpha;
+            colr = stopColor.substr(1) + thisAlpha;
             $('#' + id + '_jGraduate_stopPicker').css({
               left: 100,
               bottom: 15
@@ -22861,12 +23316,12 @@
                 clientPath: $settings.images.clientPath
               },
               color: {
-                active: color,
+                active: colr,
                 alphaSupport: true
               }
-            }, function (color, arg2) {
-              stopColor = color.val('hex') ? '#' + color.val('hex') : 'none';
-              stopOpacity = color.val('a') !== null ? color.val('a') / 256 : 1;
+            }, function (clr, arg2) {
+              stopColor = clr.val('hex') ? '#' + clr.val('hex') : 'none';
+              stopOpacity = clr.val('a') !== null ? clr.val('a') / 256 : 1;
               colorhandle.setAttribute('fill', stopColor);
               colorhandle.setAttribute('fill-opacity', stopOpacity);
               stop.setAttribute('stop-color', stopColor);
@@ -22881,8 +23336,8 @@
           $(curGradient).find('stop').each(function () {
             var curS = $(this);
 
-            if (+this.getAttribute('offset') > n) {
-              if (!color) {
+            if (Number(this.getAttribute('offset')) > n) {
+              if (!colr) {
                 var newcolor = this.getAttribute('stop-color');
                 var newopac = this.getAttribute('stop-opacity');
                 stop.setAttribute('stop-color', newcolor);
@@ -22894,10 +23349,17 @@
               curS.before(stop);
               return false;
             }
+
+            return true;
           });
           if (sel) selectStop(path);
           return stop;
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function remStop() {
           delStop.setAttribute('display', 'none');
@@ -22917,6 +23379,11 @@
           display: 'none'
         }, undefined); // stopMakerSVG);
 
+        /**
+        * @param {Element} item
+        * @returns {undefined}
+        */
+
         function selectStop(item) {
           if (curStop) curStop.setAttribute('stroke', '#000');
           item.setAttribute('stroke', 'blue');
@@ -22927,6 +23394,10 @@
         }
 
         var stopOffset;
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function remDrags() {
           $win.unbind('mousemove', dragColor);
@@ -22943,6 +23414,10 @@
             angle = 0;
         var cX = cx;
         var cY = cy;
+        /**
+        *
+        * @returns {undefined}
+        */
 
         function xform() {
           var rot = angle ? 'rotate(' + angle + ',' + cX + ',' + cY + ') ' : '';
@@ -22955,6 +23430,11 @@
             curGradient.setAttribute('gradientTransform', rot + 'translate(' + x + ',' + y + ') scale(' + scaleX + ',' + scaleY + ')'); // $('#ang').removeClass('dis');
           }
         }
+        /**
+        * @param {Event} evt
+        * @returns {undefined}
+        */
+
 
         function dragColor(evt) {
           var x = evt.pageX - stopOffset.left;
@@ -23042,28 +23522,28 @@
           var fracx = x / SIZEX;
           var fracy = y / SIZEY;
           var type = draggingCoord.data('coord');
-          var grad = curGradient;
+          var grd = curGradient;
 
           switch (type) {
             case 'start':
               attrInput.x1.val(fracx);
               attrInput.y1.val(fracy);
-              grad.setAttribute('x1', fracx);
-              grad.setAttribute('y1', fracy);
+              grd.setAttribute('x1', fracx);
+              grd.setAttribute('y1', fracy);
               break;
 
             case 'end':
               attrInput.x2.val(fracx);
               attrInput.y2.val(fracy);
-              grad.setAttribute('x2', fracx);
-              grad.setAttribute('y2', fracy);
+              grd.setAttribute('x2', fracx);
+              grd.setAttribute('y2', fracy);
               break;
 
             case 'center':
               attrInput.cx.val(fracx);
               attrInput.cy.val(fracy);
-              grad.setAttribute('cx', fracx);
-              grad.setAttribute('cy', fracy);
+              grd.setAttribute('cx', fracx);
+              grd.setAttribute('cy', fracy);
               cX = fracx;
               cY = fracy;
               xform();
@@ -23072,8 +23552,8 @@
             case 'focus':
               attrInput.fx.val(fracx);
               attrInput.fy.val(fracy);
-              grad.setAttribute('fx', fracx);
-              grad.setAttribute('fy', fracy);
+              grd.setAttribute('fx', fracx);
+              grd.setAttribute('fy', fracy);
               xform();
           }
 
@@ -23143,22 +23623,20 @@
           focusCoord.toggle(showFocus);
           attrInput.fx.val('');
           attrInput.fy.val('');
-          var grad = curGradient;
+          var grd = curGradient;
 
           if (!showFocus) {
-            lastfx = grad.getAttribute('fx');
-            lastfy = grad.getAttribute('fy');
-            grad.removeAttribute('fx');
-            grad.removeAttribute('fy');
+            lastfx = grd.getAttribute('fx');
+            lastfy = grd.getAttribute('fy');
+            grd.removeAttribute('fx');
+            grd.removeAttribute('fy');
           } else {
-            var _fx = lastfx || 0.5;
-
-            var _fy = lastfy || 0.5;
-
-            grad.setAttribute('fx', _fx);
-            grad.setAttribute('fy', _fy);
-            attrInput.fx.val(_fx);
-            attrInput.fy.val(_fy);
+            var fX = lastfx || 0.5;
+            var fY = lastfy || 0.5;
+            grd.setAttribute('fx', fX);
+            grd.setAttribute('fy', fY);
+            attrInput.fx.val(fX);
+            attrInput.fy.val(fY);
           }
         });
         stops = curGradient.getElementsByTagNameNS(ns.svg, 'stop');
@@ -23177,9 +23655,9 @@
 
         var setSlider = function setSlider(e) {
           var _slider = slider,
-              offset = _slider.offset;
+              left = _slider.offset.left;
           var div = slider.parent;
-          var x = e.pageX - offset.left - parseInt(div.css('border-left-width'));
+          var x = e.pageX - left - parseInt(div.css('border-left-width'));
           if (x > SLIDERW) x = SLIDERW;
           if (x <= 0) x = 0;
           var posx = x - 5;
@@ -23223,7 +23701,7 @@
               break;
 
             case 'angle':
-              x = x - 0.5;
+              x -= 0.5;
               angle = x *= 180;
               xform();
               x /= 100;
@@ -23315,7 +23793,7 @@
           });
           $(data.input).val(data.val).change(function () {
             var isRad = curType === 'radialGradient';
-            var val = +this.value;
+            var val = Number(this.value);
             var xpos = 0;
 
             switch (type) {
@@ -23413,10 +23891,10 @@
             active: color,
             alphaSupport: true
           }
-        }, function (color) {
+        }, function (clr) {
           $this.paint.type = 'solidColor';
-          $this.paint.alpha = color.val('ahex') ? Math.round(color.val('a') / 255 * 100) : 100;
-          $this.paint.solidColor = color.val('hex') ? color.val('hex') : 'none';
+          $this.paint.alpha = clr.val('ahex') ? Math.round(clr.val('a') / 255 * 100) : 100;
+          $this.paint.solidColor = clr.val('hex') ? clr.val('hex') : 'none';
           $this.paint.radialGradient = null;
           okClicked();
         }, null, function () {
@@ -23450,7 +23928,7 @@
               curGradient.setAttribute('spreadMethod', sm);
             }
 
-            showFocus = type === 'rg' && curGradient.getAttribute('fx') != null && !(cx === fx && cy === fy);
+            showFocus = type === 'rg' && curGradient.getAttribute('fx') !== null && !(cx === fx && cy === fy);
             $('#' + id + '_jGraduate_focusCoord').toggle(showFocus);
 
             if (showFocus) {
@@ -23566,7 +24044,7 @@
    * @param {external:jQuery} $ The jQuery object to which to add the plug-in
    * @returns {external:jQuery}
   */
-  function jqPluginSpinBtn ($) {
+  function jQueryPluginSpinButton($) {
     if (!$.loadingStylesheets) {
       $.loadingStylesheets = [];
     }
@@ -23579,12 +24057,14 @@
     /**
     * @callback module:jQuerySpinButton.StepCallback
     * @param {external:jQuery} thisArg Value of `this`
+    * @param {Float} i Value to adjust
+    * @returns {Float}
     */
 
     /**
     * @callback module:jQuerySpinButton.ValueCallback
-    * @param {external:jQuery} thisArg Value of `this`
-    * @param {Float} value Value that was changed
+    * @param {external:jQuery.fn.SpinButton} thisArg Spin Button; check its `value` to see how it was changed.
+    * @returns {undefined}
     */
 
     /**
@@ -23592,7 +24072,7 @@
      * @property {Float} min Set lower limit
      * @property {Float} max Set upper limit.
      * @property {Float} step Set increment size.
-     * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust
+     * @property {module:jQuerySpinButton.StepCallback} stepfunc Custom function to run when changing a value; called with `this` of object and the value to adjust and returns a float.
      * @property {module:jQuerySpinButton.ValueCallback} callback Called after value adjusted (with `this` of object)
      * @property {Float} smallStep Set shift-click increment size.
      * @property {PlainObject} stateObj Object to allow passing in live-updating scale
@@ -23615,6 +24095,12 @@
 
     $.fn.SpinButton = function (cfg) {
       cfg = cfg || {};
+      /**
+       *
+       * @param {Element} el
+       * @param {"offsetLeft"|"offsetTop"} prop
+       * @returns {Integer}
+       */
 
       function coord(el, prop) {
         var b = document.body;
@@ -23873,7 +24359,7 @@
    *
   */
   /**
-  * @callback module:jQueryContextMenu.jQueryContextMenuCallback
+  * @callback module:jQueryContextMenu.jQueryContextMenuListener
   * @param {string} href The `href` value after the first character (for bypassing an initial `#`)
   * @param {external:jQuery} srcElement The wrapped jQuery srcElement
   * @param {{x: Float, y: Float, docX: Float, docY: Float}} coords
@@ -23906,10 +24392,10 @@
       /**
       * @memberof external:jQuery.fn
       * @param {module:jQueryContextMenu.jQueryContextMenuConfig} o
-      * @param {module:jQueryContextMenu.jQueryContextMenuCallback} callback
+      * @param {module:jQueryContextMenu.jQueryContextMenuListener} listener
       * @returns {external:jQuery}
       */
-      contextMenu: function contextMenu(o, callback) {
+      contextMenu: function contextMenu(o, listener) {
         // Defaults
         if (o.menu === undefined) return false;
         if (o.inSpeed === undefined) o.inSpeed = 150;
@@ -23925,102 +24411,104 @@
 
           menu.addClass('contextMenu'); // Simulate a true right click
 
-          $(this).bind('mousedown', function (e) {
-            var evt = e;
+          $(this).bind('mousedown', function (evt) {
             $(this).mouseup(function (e) {
               var srcElement = $(this);
               srcElement.unbind('mouseup');
 
-              if (evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac()) {
-                e.stopPropagation(); // Hide context menus that may be showing
-
-                $('.contextMenu').hide(); // Get this context menu
-
-                if (el.hasClass('disabled')) return false; // Detect mouse position
-
-                var x = e.pageX,
-                    y = e.pageY;
-                var xOff = win.width() - menu.width(),
-                    yOff = win.height() - menu.height();
-                if (x > xOff - 15) x = xOff - 15;
-                if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
-                // Show the menu
-
-                doc.unbind('click');
-                menu.css({
-                  top: y,
-                  left: x
-                }).fadeIn(o.inSpeed); // Hover events
-
-                menu.find('A').mouseover(function () {
-                  menu.find('LI.hover').removeClass('hover');
-                  $(this).parent().addClass('hover');
-                }).mouseout(function () {
-                  menu.find('LI.hover').removeClass('hover');
-                }); // Keyboard
-
-                doc.keypress(function (e) {
-                  switch (e.keyCode) {
-                    case 38:
-                      // up
-                      if (!menu.find('LI.hover').length) {
-                        menu.find('LI:last').addClass('hover');
-                      } else {
-                        menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
-                        if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
-                      }
-
-                      break;
-
-                    case 40:
-                      // down
-                      if (!menu.find('LI.hover').length) {
-                        menu.find('LI:first').addClass('hover');
-                      } else {
-                        menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
-                        if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
-                      }
-
-                      break;
-
-                    case 13:
-                      // enter
-                      menu.find('LI.hover A').trigger('click');
-                      break;
-
-                    case 27:
-                      // esc
-                      doc.trigger('click');
-                      break;
-                  }
-                }); // When items are selected
-
-                menu.find('A').unbind('mouseup');
-                menu.find('LI:not(.disabled) A').mouseup(function () {
-                  doc.unbind('click').unbind('keypress');
-                  $('.contextMenu').hide(); // Callback
-
-                  if (callback) {
-                    callback($(this).attr('href').substr(1), $(srcElement), {
-                      x: x - offset.left,
-                      y: y - offset.top,
-                      docX: x,
-                      docY: y
-                    });
-                  }
-
-                  return false;
-                }); // Hide bindings
-
-                setTimeout(function () {
-                  // Delay for Mozilla
-                  doc.click(function () {
-                    doc.unbind('click').unbind('keypress');
-                    menu.fadeOut(o.outSpeed);
-                    return false;
-                  });
-                }, 0);
+              if (!(evt.button === 2 || o.allowLeft || evt.ctrlKey && isMac())) {
+                return undefined;
               }
+
+              e.stopPropagation(); // Hide context menus that may be showing
+
+              $('.contextMenu').hide(); // Get this context menu
+
+              if (el.hasClass('disabled')) return false; // Detect mouse position
+
+              var x = e.pageX,
+                  y = e.pageY;
+              var xOff = win.width() - menu.width(),
+                  yOff = win.height() - menu.height();
+              if (x > xOff - 15) x = xOff - 15;
+              if (y > yOff - 30) y = yOff - 30; // 30 is needed to prevent scrollbars in FF
+              // Show the menu
+
+              doc.unbind('click');
+              menu.css({
+                top: y,
+                left: x
+              }).fadeIn(o.inSpeed); // Hover events
+
+              menu.find('A').mouseover(function () {
+                menu.find('LI.hover').removeClass('hover');
+                $(this).parent().addClass('hover');
+              }).mouseout(function () {
+                menu.find('LI.hover').removeClass('hover');
+              }); // Keyboard
+
+              doc.keypress(function (ev) {
+                switch (ev.keyCode) {
+                  case 38:
+                    // up
+                    if (!menu.find('LI.hover').length) {
+                      menu.find('LI:last').addClass('hover');
+                    } else {
+                      menu.find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
+                      if (!menu.find('LI.hover').length) menu.find('LI:last').addClass('hover');
+                    }
+
+                    break;
+
+                  case 40:
+                    // down
+                    if (!menu.find('LI.hover').length) {
+                      menu.find('LI:first').addClass('hover');
+                    } else {
+                      menu.find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
+                      if (!menu.find('LI.hover').length) menu.find('LI:first').addClass('hover');
+                    }
+
+                    break;
+
+                  case 13:
+                    // enter
+                    menu.find('LI.hover A').trigger('click');
+                    break;
+
+                  case 27:
+                    // esc
+                    doc.trigger('click');
+                    break;
+                }
+              }); // When items are selected
+
+              menu.find('A').unbind('mouseup');
+              menu.find('LI:not(.disabled) A').mouseup(function () {
+                doc.unbind('click').unbind('keypress');
+                $('.contextMenu').hide();
+
+                if (listener) {
+                  listener($(this).attr('href').substr(1), $(srcElement), {
+                    x: x - offset.left,
+                    y: y - offset.top,
+                    docX: x,
+                    docY: y
+                  });
+                }
+
+                return false;
+              }); // Hide bindings
+
+              setTimeout(function () {
+                // Delay for Mozilla
+                doc.click(function () {
+                  doc.unbind('click').unbind('keypress');
+                  menu.fadeOut(o.outSpeed);
+                  return false;
+                });
+              }, 0);
+              return undefined;
             });
           }); // Disable text selection
 
@@ -24174,6 +24662,16 @@
     if (precision === undefined) precision = 0;
     return Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);
   }
+  /**
+   * Whether a value is `null` or `undefined`.
+   * @param {Any} val
+   * @returns {boolean}
+   */
+
+
+  var isNullish$1 = function isNullish(val) {
+    return val === null || val === undefined;
+  };
   /**
   * @function module:jPicker.jPicker
   * @param {external:jQuery} $ The jQuery object to wrap (with {@link external:jQuery.loadingStylesheets}, {@link external:jQuery.fn.$.fn.jPicker}, {@link external:jQuery.fn.$.fn.jPicker.defaults})
@@ -24210,6 +24708,7 @@
     /**
     * Encapsulate slider functionality for the ColorMap and ColorBar -
     * could be useful to use a jQuery UI draggable for this with certain extensions.
+    * @memberof module:jPicker
     * @param {external:jQuery} bar
     * @param {module:jPicker.SliderOptions} options
     * @returns {undefined}
@@ -24219,13 +24718,23 @@
     var Slider = function Slider(bar, options) {
       _classCallCheck(this, Slider);
 
-      var $this = this;
+      var that = this;
+      /**
+       * Fire events on the supplied `context`
+       * @param {module:jPicker.JPickerInit} context
+       * @returns {undefined}
+       */
 
       function fireChangeEvents(context) {
-        for (var i = 0; i < changeEvents.length; i++) {
-          changeEvents[i].call($this, $this, context);
-        }
-      } // bind the mousedown to the bar not the arrow for quick snapping to the clicked location
+        changeEvents.forEach(function (changeEvent) {
+          changeEvent.call(that, that, context);
+        });
+      }
+      /**
+       * Bind the mousedown to the bar not the arrow for quick snapping to the clicked location.
+       * @param {external:jQuery.Event} e
+       * @returns {undefined}
+       */
 
 
       function mouseDown(e) {
@@ -24233,27 +24742,38 @@
         offset = {
           l: off.left | 0,
           t: off.top | 0
-        };
+        }; // eslint-disable-line no-bitwise
+
         clearTimeout(timeout); // using setTimeout for visual updates - once the style is updated the browser will re-render internally allowing the next Javascript to run
 
         timeout = setTimeout(function () {
-          setValuesFromMousePosition.call($this, e);
+          setValuesFromMousePosition.call(that, e);
         }, 0); // Bind mousemove and mouseup event to the document so it responds when dragged of of the bar - we will unbind these when on mouseup to save processing
 
         $(document).bind('mousemove', mouseMove).bind('mouseup', mouseUp);
         e.preventDefault(); // don't try to select anything or drag the image to the desktop
-      } // set the values as the mouse moves
+      }
+      /**
+       * Set the values as the mouse moves.
+       * @param {external:jQuery.Event} e
+       * @returns {false}
+       */
 
 
       function mouseMove(e) {
         clearTimeout(timeout);
         timeout = setTimeout(function () {
-          setValuesFromMousePosition.call($this, e);
+          setValuesFromMousePosition.call(that, e);
         }, 0);
         e.stopPropagation();
         e.preventDefault();
         return false;
-      } // unbind the document events - they aren't needed when not dragging
+      }
+      /**
+       * Unbind the document events - they aren't needed when not dragging.
+       * @param {external:jQuery.Event} e
+       * @returns {false}
+       */
 
 
       function mouseUp(e) {
@@ -24261,7 +24781,12 @@
         e.stopPropagation();
         e.preventDefault();
         return false;
-      } // calculate mouse position and set value within the current range
+      }
+      /**
+       * Calculate mouse position and set value within the current range.
+       * @param {Event} e
+       * @returns {undefined}
+       */
 
 
       function setValuesFromMousePosition(e) {
@@ -24273,11 +24798,16 @@
 
         if (locX < 0) locX = 0;else if (locX > barW) locX = barW;
         if (locY < 0) locY = 0;else if (locY > barH) locY = barH;
-        val.call($this, 'xy', {
+        val.call(that, 'xy', {
           x: locX / barW * rangeX + minX,
           y: locY / barH * rangeY + minY
         });
       }
+      /**
+       *
+       * @returns {undefined}
+       */
+
 
       function draw() {
         var barW = bar.w,
@@ -24287,6 +24817,7 @@
         var arrowOffsetX = 0,
             arrowOffsetY = 0;
         setTimeout(function () {
+          /* eslint-disable no-bitwise */
           if (rangeX > 0) {
             // range is greater than zero
             // constrain to bounds
@@ -24309,14 +24840,23 @@
             left: arrowOffsetX + 'px',
             top: arrowOffsetY + 'px'
           });
-        }, 0);
+          /* eslint no-bitwise: ["error"] */
+        });
       }
+      /**
+       * Get or set a value.
+       * @param {?("xy"|"x"|"y")} name
+       * @param {module:math.XYObject} value
+       * @param {module:jPicker.Slider} context
+       * @returns {module:math.XYObject|Float|undefined}
+       */
+
 
       function val(name, value, context) {
         var set = value !== undefined;
 
         if (!set) {
-          if (name === undefined || name == null) name = 'xy';
+          if (isNullish$1(name)) name = 'xy';
 
           switch (name.toLowerCase()) {
             case 'x':
@@ -24334,10 +24874,10 @@
           }
         }
 
-        if (context != null && context === $this) return;
+        if (!isNullish$1(context) && context === that) return undefined;
         var changed = false;
         var newX, newY;
-        if (name == null) name = 'xy';
+        if (isNullish$1(name)) name = 'xy';
 
         switch (name.toLowerCase()) {
           case 'x':
@@ -24355,7 +24895,7 @@
             break;
         }
 
-        if (newX != null) {
+        if (!isNullish$1(newX)) {
           if (newX < minX) newX = minX;else if (newX > maxX) newX = maxX;
 
           if (x !== newX) {
@@ -24364,7 +24904,7 @@
           }
         }
 
-        if (newY != null) {
+        if (!isNullish$1(newY)) {
           if (newY < minY) newY = minY;else if (newY > maxY) newY = maxY;
 
           if (y !== newY) {
@@ -24373,14 +24913,40 @@
           }
         }
 
-        changed && fireChangeEvents.call($this, context || $this);
+        changed && fireChangeEvents.call(that, context || that);
+        return undefined;
       }
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeX
+      * @property {Float} minX
+      * @property {Float} maxX
+      * @property {Float} rangeX
+      */
+
+      /**
+      * @typedef {PlainObject} module:jPicker.MinMaxRangeY
+      * @property {Float} minY
+      * @property {Float} maxY
+      * @property {Float} rangeY
+      */
+
+      /**
+      * @typedef {module:jPicker.MinMaxRangeY|module:jPicker.MinMaxRangeX} module:jPicker.MinMaxRangeXY
+      */
+
+      /**
+       *
+       * @param {"minx"|"maxx"|"rangex"|"miny"|"maxy"|"rangey"|"all"} name
+       * @param {module:jPicker.MinMaxRangeXY} value
+       * @returns {module:jPicker.MinMaxRangeXY|module:jPicker.MinMaxRangeX|module:jPicker.MinMaxRangeY|undefined}
+       */
+
 
       function range(name, value) {
         var set = value !== undefined;
 
         if (!set) {
-          if (name === undefined || name == null) name = 'all';
+          if (isNullish$1(name)) name = 'all';
 
           switch (name.toLowerCase()) {
             case 'minx':
@@ -24424,7 +24990,8 @@
 
         var // changed = false,
         newMinX, newMaxX, newMinY, newMaxY;
-        if (name == null) name = 'all';
+        if (isNullish$1(name)) name = 'all';
+        /* eslint-disable no-bitwise */
 
         switch (name.toLowerCase()) {
           case 'minx':
@@ -24461,33 +25028,49 @@
             newMaxY = value && value.maxY && value.maxY | 0 || 0;
             break;
         }
+        /* eslint no-bitwise: ["error"] */
 
-        if (newMinX != null && minX !== newMinX) {
+
+        if (!isNullish$1(newMinX) && minX !== newMinX) {
           minX = newMinX;
           rangeX = maxX - minX;
         }
 
-        if (newMaxX != null && maxX !== newMaxX) {
+        if (!isNullish$1(newMaxX) && maxX !== newMaxX) {
           maxX = newMaxX;
           rangeX = maxX - minX;
         }
 
-        if (newMinY != null && minY !== newMinY) {
+        if (!isNullish$1(newMinY) && minY !== newMinY) {
           minY = newMinY;
           rangeY = maxY - minY;
         }
 
-        if (newMaxY != null && maxY !== newMaxY) {
+        if (!isNullish$1(newMaxY) && maxY !== newMaxY) {
           maxY = newMaxY;
           rangeY = maxY - minY;
         }
+
+        return undefined;
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function bind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback === 'function') changeEvents.push(callback);
       }
+      /**
+      * @param {GenericCallback} callback
+      * @returns {undefined}
+      */
+
 
       function unbind(callback) {
+        // eslint-disable-line promise/prefer-await-to-callbacks
         if (typeof callback !== 'function') return;
         var i;
 
@@ -24495,6 +25078,11 @@
           changeEvents.splice(i, 1);
         }
       }
+      /**
+      *
+      * @returns {undefined}
+      */
+
 
       function destroy() {
         // unbind all possible events and null objects
@@ -24518,8 +25106,9 @@
           arrow = bar.find('img:first'),
           // the arrow image to drag
       changeEvents = [];
-      $.extend(true, $this, // public properties, methods, and event bindings - these we need to access from other controls
-      {
+      $.extend(true, // public properties, methods, and event bindings - these we need
+      //   to access from other controls
+      that, {
         val: val,
         range: range,
         bind: bind,
@@ -24534,29 +25123,45 @@
       bar.h = options.map && options.map.height || bar.height(); // bind mousedown event
 
       bar.bind('mousedown', mouseDown);
-      bind.call($this, draw);
-    }; // controls for all the input elements for the typing in color values
+      bind.call(that, draw);
+    };
+    /**
+     * Controls for all the input elements for the typing in color values.
+     * @param {external:jQuery} picker
+     * @param {external:jQuery.jPicker.Color} color
+     * @param {external:jQuery.fn.$.fn.jPicker} bindedHex
+     * @param {Float} alphaPrecision
+     * @constructor
+     */
 
 
-    function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
-      var $this = this; // private properties and methods
+    var ColorValuePicker = function ColorValuePicker(picker, color, bindedHex, alphaPrecision) {
+      _classCallCheck(this, ColorValuePicker);
+
+      var that = this; // private properties and methods
 
       var inputs = picker.find('td.Text input'); // input box key down - use arrows to alter color
 
+      /**
+       *
+       * @param {Event} e
+       * @returns {Event|false|undefined}
+       */
+
       function keyDown(e) {
-        if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+        if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
         if (!validateKey(e)) return e;
 
         switch (e.target) {
           case red.get(0):
             switch (e.keyCode) {
               case 38:
-                red.val(setValueInRange.call($this, (red.val() << 0) + 1, 0, 255));
+                red.val(setValueInRange.call(that, (red.val() << 0) + 1, 0, 255));
                 color.val('r', red.val(), e.target);
                 return false;
 
               case 40:
-                red.val(setValueInRange.call($this, (red.val() << 0) - 1, 0, 255));
+                red.val(setValueInRange.call(that, (red.val() << 0) - 1, 0, 255));
                 color.val('r', red.val(), e.target);
                 return false;
             }
@@ -24566,12 +25171,12 @@
           case green.get(0):
             switch (e.keyCode) {
               case 38:
-                green.val(setValueInRange.call($this, (green.val() << 0) + 1, 0, 255));
+                green.val(setValueInRange.call(that, (green.val() << 0) + 1, 0, 255));
                 color.val('g', green.val(), e.target);
                 return false;
 
               case 40:
-                green.val(setValueInRange.call($this, (green.val() << 0) - 1, 0, 255));
+                green.val(setValueInRange.call(that, (green.val() << 0) - 1, 0, 255));
                 color.val('g', green.val(), e.target);
                 return false;
             }
@@ -24581,12 +25186,12 @@
           case blue.get(0):
             switch (e.keyCode) {
               case 38:
-                blue.val(setValueInRange.call($this, (blue.val() << 0) + 1, 0, 255));
+                blue.val(setValueInRange.call(that, (blue.val() << 0) + 1, 0, 255));
                 color.val('b', blue.val(), e.target);
                 return false;
 
               case 40:
-                blue.val(setValueInRange.call($this, (blue.val() << 0) - 1, 0, 255));
+                blue.val(setValueInRange.call(that, (blue.val() << 0) - 1, 0, 255));
                 color.val('b', blue.val(), e.target);
                 return false;
             }
@@ -24596,12 +25201,12 @@
           case alpha && alpha.get(0):
             switch (e.keyCode) {
               case 38:
-                alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) + 1, 0, 100));
+                alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) + 1, 0, 100));
                 color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
                 return false;
 
               case 40:
-                alpha.val(setValueInRange.call($this, parseFloat(alpha.val()) - 1, 0, 100));
+                alpha.val(setValueInRange.call(that, parseFloat(alpha.val()) - 1, 0, 100));
                 color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
                 return false;
             }
@@ -24611,12 +25216,12 @@
           case hue.get(0):
             switch (e.keyCode) {
               case 38:
-                hue.val(setValueInRange.call($this, (hue.val() << 0) + 1, 0, 360));
+                hue.val(setValueInRange.call(that, (hue.val() << 0) + 1, 0, 360));
                 color.val('h', hue.val(), e.target);
                 return false;
 
               case 40:
-                hue.val(setValueInRange.call($this, (hue.val() << 0) - 1, 0, 360));
+                hue.val(setValueInRange.call(that, (hue.val() << 0) - 1, 0, 360));
                 color.val('h', hue.val(), e.target);
                 return false;
             }
@@ -24626,12 +25231,12 @@
           case saturation.get(0):
             switch (e.keyCode) {
               case 38:
-                saturation.val(setValueInRange.call($this, (saturation.val() << 0) + 1, 0, 100));
+                saturation.val(setValueInRange.call(that, (saturation.val() << 0) + 1, 0, 100));
                 color.val('s', saturation.val(), e.target);
                 return false;
 
               case 40:
-                saturation.val(setValueInRange.call($this, (saturation.val() << 0) - 1, 0, 100));
+                saturation.val(setValueInRange.call(that, (saturation.val() << 0) - 1, 0, 100));
                 color.val('s', saturation.val(), e.target);
                 return false;
             }
@@ -24641,58 +25246,66 @@
           case value.get(0):
             switch (e.keyCode) {
               case 38:
-                value.val(setValueInRange.call($this, (value.val() << 0) + 1, 0, 100));
+                value.val(setValueInRange.call(that, (value.val() << 0) + 1, 0, 100));
                 color.val('v', value.val(), e.target);
                 return false;
 
               case 40:
-                value.val(setValueInRange.call($this, (value.val() << 0) - 1, 0, 100));
+                value.val(setValueInRange.call(that, (value.val() << 0) - 1, 0, 100));
                 color.val('v', value.val(), e.target);
                 return false;
             }
 
             break;
         }
+
+        return undefined;
       } // input box key up - validate value and set color
 
+      /**
+      * @param {Event} e
+      * @returns {Event|undefined}
+      * @todo Why is this returning an event?
+      */
+
 
       function keyUp(e) {
-        if (e.target.value === '' && e.target !== hex.get(0) && (bindedHex != null && e.target !== bindedHex.get(0) || bindedHex == null)) return;
+        if (e.target.value === '' && e.target !== hex.get(0) && (!isNullish$1(bindedHex) && e.target !== bindedHex.get(0) || isNullish$1(bindedHex))) return undefined;
         if (!validateKey(e)) return e;
 
         switch (e.target) {
           case red.get(0):
-            red.val(setValueInRange.call($this, red.val(), 0, 255));
+            red.val(setValueInRange.call(that, red.val(), 0, 255));
             color.val('r', red.val(), e.target);
             break;
 
           case green.get(0):
-            green.val(setValueInRange.call($this, green.val(), 0, 255));
+            green.val(setValueInRange.call(that, green.val(), 0, 255));
             color.val('g', green.val(), e.target);
             break;
 
           case blue.get(0):
-            blue.val(setValueInRange.call($this, blue.val(), 0, 255));
+            blue.val(setValueInRange.call(that, blue.val(), 0, 255));
             color.val('b', blue.val(), e.target);
             break;
 
           case alpha && alpha.get(0):
-            alpha.val(setValueInRange.call($this, alpha.val(), 0, 100));
+            alpha.val(setValueInRange.call(that, alpha.val(), 0, 100));
             color.val('a', toFixedNumeric(alpha.val() * 255 / 100, alphaPrecision), e.target);
             break;
 
           case hue.get(0):
-            hue.val(setValueInRange.call($this, hue.val(), 0, 360));
+            hue.val(setValueInRange.call(that, hue.val(), 0, 360));
             color.val('h', hue.val(), e.target);
             break;
 
           case saturation.get(0):
-            saturation.val(setValueInRange.call($this, saturation.val(), 0, 100));
+            saturation.val(setValueInRange.call(that, saturation.val(), 0, 100));
             color.val('s', saturation.val(), e.target);
             break;
 
           case value.get(0):
-            value.val(setValueInRange.call($this, value.val(), 0, 100));
+            value.val(setValueInRange.call(that, value.val(), 0, 100));
             color.val('v', value.val(), e.target);
             break;
 
@@ -24710,14 +25323,21 @@
 
           case ahex && ahex.get(0):
             ahex.val(ahex.val().replace(/[^a-fA-F0-9]/g, '').toLowerCase().substring(0, 2));
-            color.val('a', ahex.val() != null ? parseInt(ahex.val(), 16) : null, e.target);
+            color.val('a', !isNullish$1(ahex.val()) ? parseInt(ahex.val(), 16) : null, e.target);
             break;
         }
+
+        return undefined;
       } // input box blur - reset to original if value empty
 
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
+
 
       function blur(e) {
-        if (color.val() != null) {
+        if (!isNullish$1(color.val())) {
           switch (e.target) {
             case red.get(0):
               red.val(color.val('r'));
@@ -24759,6 +25379,11 @@
           }
         }
       }
+      /**
+      * @param {Event} e
+      * @returns {boolean}
+      */
+
 
       function validateKey(e) {
         switch (e.keyCode) {
@@ -24775,7 +25400,14 @@
         }
 
         return true;
-      } // constrain value within range
+      }
+      /**
+      * Constrain value within range.
+      * @param {Float|string} value
+      * @param {Float} min
+      * @param {Float} max
+      * @returns {Float|string} Returns a number or numeric string
+      */
 
 
       function setValueInRange(value, min, max) {
@@ -24784,23 +25416,33 @@
         if (value < min) return min;
         return value;
       }
+      /**
+      * @param {external:jQuery} ui
+      * @param {Element} context
+      * @returns {undefined}
+      */
+
 
       function colorChanged(ui, context) {
         var all = ui.val('all');
-        if (context !== red.get(0)) red.val(all != null ? all.r : '');
-        if (context !== green.get(0)) green.val(all != null ? all.g : '');
-        if (context !== blue.get(0)) blue.val(all != null ? all.b : '');
-        if (alpha && context !== alpha.get(0)) alpha.val(all != null ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
-        if (context !== hue.get(0)) hue.val(all != null ? all.h : '');
-        if (context !== saturation.get(0)) saturation.val(all != null ? all.s : '');
-        if (context !== value.get(0)) value.val(all != null ? all.v : '');
-        if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(all != null ? all.hex : '');
-        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(all != null ? all.hex : '');
-        if (ahex && context !== ahex.get(0)) ahex.val(all != null ? all.ahex.substring(6) : '');
+        if (context !== red.get(0)) red.val(!isNullish$1(all) ? all.r : '');
+        if (context !== green.get(0)) green.val(!isNullish$1(all) ? all.g : '');
+        if (context !== blue.get(0)) blue.val(!isNullish$1(all) ? all.b : '');
+        if (alpha && context !== alpha.get(0)) alpha.val(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, alphaPrecision) : '');
+        if (context !== hue.get(0)) hue.val(!isNullish$1(all) ? all.h : '');
+        if (context !== saturation.get(0)) saturation.val(!isNullish$1(all) ? all.s : '');
+        if (context !== value.get(0)) value.val(!isNullish$1(all) ? all.v : '');
+        if (context !== hex.get(0) && (bindedHex && context !== bindedHex.get(0) || !bindedHex)) hex.val(!isNullish$1(all) ? all.hex : '');
+        if (bindedHex && context !== bindedHex.get(0) && context !== hex.get(0)) bindedHex.val(!isNullish$1(all) ? all.hex : '');
+        if (ahex && context !== ahex.get(0)) ahex.val(!isNullish$1(all) ? all.ahex.substring(6) : '');
       }
+      /**
+      * Unbind all events and null objects.
+      * @returns {undefined}
+      */
+
 
       function destroy() {
-        // unbind all events and null objects
         red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).unbind('keyup', keyUp).unbind('blur', blur);
         red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).unbind('keydown', keyDown);
         color.unbind(colorChanged);
@@ -24824,25 +25466,25 @@
           value = inputs.eq(2),
           hex = inputs.eq(inputs.length > 7 ? 7 : 6),
           ahex = inputs.length > 7 ? inputs.eq(8) : null;
-      $.extend(true, $this, {
+      $.extend(true, that, {
         // public properties and methods
         destroy: destroy
       });
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).add(hex).add(bindedHex).add(ahex).bind('keyup', keyUp).bind('blur', blur);
       red.add(green).add(blue).add(alpha).add(hue).add(saturation).add(value).bind('keydown', keyDown);
       color.bind(colorChanged);
-    }
+    };
     /**
     * @typedef {PlainObject} module:jPicker.JPickerInit
-    * @property {Integer} a
-    * @property {Integer} b
-    * @property {Integer} g
-    * @property {Integer} h
-    * @property {Integer} r
-    * @property {Integer} s
-    * @property {Integer} v
-    * @property {string} hex
-    * @property {string} ahex
+    * @property {Integer} [a]
+    * @property {Integer} [b]
+    * @property {Integer} [g]
+    * @property {Integer} [h]
+    * @property {Integer} [r]
+    * @property {Integer} [s]
+    * @property {Integer} [v]
+    * @property {string} [hex]
+    * @property {string} [ahex]
     */
 
     /**
@@ -24872,13 +25514,26 @@
       * @param {module:jPicker.JPickerInit} init
       */
       Color: function Color(init) {
-        var $this = this;
+        // eslint-disable-line object-shorthand
+        var that = this;
+        /**
+         *
+         * @param {module:jPicker.Slider} context
+         * @returns {undefined}
+         */
 
         function fireChangeEvents(context) {
           for (var i = 0; i < changeEvents.length; i++) {
-            changeEvents[i].call($this, $this, context);
+            changeEvents[i].call(that, that, context);
           }
         }
+        /**
+         * @param {string|"ahex"|"hex"|"all"|""|null|undefined} name String composed of letters "r", "g", "b", "a", "h", "s", and/or "v"
+         * @param {module:jPicker.RGBA|module:jPicker.JPickerInit|string} [value]
+         * @param {external:jQuery.jPicker.Color} context
+         * @returns {module:jPicker.JPickerInit|string|null|undefined}
+         */
+
 
         function val(name, value, context) {
           // Kind of ugly
@@ -24886,8 +25541,9 @@
           if (set && value.ahex === '') value.ahex = '00000000';
 
           if (!set) {
-            if (name === undefined || name == null || name === '') name = 'all';
-            if (r == null) return null;
+            var ret;
+            if (isNullish$1(name) || name === '') name = 'all';
+            if (isNullish$1(r)) return null;
 
             switch (name.toLowerCase()) {
               case 'ahex':
@@ -24910,261 +25566,281 @@
                   h: h,
                   s: s,
                   v: v,
-                  hex: val.call($this, 'hex'),
-                  ahex: val.call($this, 'ahex')
+                  hex: val.call(that, 'hex'),
+                  ahex: val.call(that, 'ahex')
                 };
 
               default:
-                var ret = {};
-                var nameLength = name.length;
+                {
+                  ret = {};
+                  var nameLength = name.length;
 
-                for (var i = 0; i < nameLength; i++) {
-                  switch (name.charAt(i)) {
-                    case 'r':
-                      if (nameLength === 1) ret = r;else ret.r = r;
-                      break;
+                  _toConsumableArray(name).forEach(function (ch) {
+                    switch (ch) {
+                      case 'r':
+                        if (nameLength === 1) ret = r;else ret.r = r;
+                        break;
 
-                    case 'g':
-                      if (nameLength === 1) ret = g;else ret.g = g;
-                      break;
+                      case 'g':
+                        if (nameLength === 1) ret = g;else ret.g = g;
+                        break;
 
-                    case 'b':
-                      if (nameLength === 1) ret = b;else ret.b = b;
-                      break;
+                      case 'b':
+                        if (nameLength === 1) ret = b;else ret.b = b;
+                        break;
 
-                    case 'a':
-                      if (nameLength === 1) ret = a;else ret.a = a;
-                      break;
+                      case 'a':
+                        if (nameLength === 1) ret = a;else ret.a = a;
+                        break;
 
-                    case 'h':
-                      if (nameLength === 1) ret = h;else ret.h = h;
-                      break;
+                      case 'h':
+                        if (nameLength === 1) ret = h;else ret.h = h;
+                        break;
 
-                    case 's':
-                      if (nameLength === 1) ret = s;else ret.s = s;
-                      break;
+                      case 's':
+                        if (nameLength === 1) ret = s;else ret.s = s;
+                        break;
 
-                    case 'v':
-                      if (nameLength === 1) ret = v;else ret.v = v;
-                      break;
-                  }
+                      case 'v':
+                        if (nameLength === 1) ret = v;else ret.v = v;
+                        break;
+                    }
+                  });
                 }
-
-                return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call($this, 'all') : ret;
             }
+
+            return _typeof(ret) === 'object' && !Object.keys(ret).length ? val.call(that, 'all') : ret;
           }
 
-          if (context != null && context === $this) return;
-          if (name == null) name = '';
+          if (!isNullish$1(context) && context === that) return undefined;
+          if (isNullish$1(name)) name = '';
           var changed = false;
 
-          if (value == null) {
-            if (r != null) {
+          if (isNullish$1(value)) {
+            if (!isNullish$1(r)) {
               r = null;
               changed = true;
             }
 
-            if (g != null) {
+            if (!isNullish$1(g)) {
               g = null;
               changed = true;
             }
 
-            if (b != null) {
+            if (!isNullish$1(b)) {
               b = null;
               changed = true;
             }
 
-            if (a != null) {
+            if (!isNullish$1(a)) {
               a = null;
               changed = true;
             }
 
-            if (h != null) {
+            if (!isNullish$1(h)) {
               h = null;
               changed = true;
             }
 
-            if (s != null) {
+            if (!isNullish$1(s)) {
               s = null;
               changed = true;
             }
 
-            if (v != null) {
+            if (!isNullish$1(v)) {
               v = null;
               changed = true;
             }
 
-            changed && fireChangeEvents.call($this, context || $this);
-            return;
+            changed && fireChangeEvents.call(that, context || that);
+            return undefined;
           }
 
           switch (name.toLowerCase()) {
             case 'ahex':
             case 'hex':
-              var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
+              {
+                var _ret = ColorMethods.hexToRgba(value && (value.ahex || value.hex) || value || 'none');
 
-              val.call($this, 'rgba', {
-                r: _ret.r,
-                g: _ret.g,
-                b: _ret.b,
-                a: name === 'ahex' ? _ret.a : a != null ? a : 255
-              }, context);
-              break;
+                val.call(that, 'rgba', {
+                  r: _ret.r,
+                  g: _ret.g,
+                  b: _ret.b,
+                  a: name === 'ahex' ? _ret.a : !isNullish$1(a) ? a : 255
+                }, context);
+                break;
+              }
 
             default:
-              if (value && (value.ahex != null || value.hex != null)) {
-                val.call($this, 'ahex', value.ahex || value.hex || '00000000', context);
-                return;
-              }
-
-              var newV = {};
-              var rgb = false,
-                  hsv = false;
-              if (value.r !== undefined && !name.includes('r')) name += 'r';
-              if (value.g !== undefined && !name.includes('g')) name += 'g';
-              if (value.b !== undefined && !name.includes('b')) name += 'b';
-              if (value.a !== undefined && !name.includes('a')) name += 'a';
-              if (value.h !== undefined && !name.includes('h')) name += 'h';
-              if (value.s !== undefined && !name.includes('s')) name += 's';
-              if (value.v !== undefined && !name.includes('v')) name += 'v';
-
-              for (var _i = 0; _i < name.length; _i++) {
-                switch (name.charAt(_i)) {
-                  case 'r':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.r = value.r && value.r | 0 || value | 0 || 0;
-                    if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
-
-                    if (r !== newV.r) {
-                      r = newV.r;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'g':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
-                    if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
-
-                    if (g !== newV.g) {
-                      g = newV.g;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'b':
-                    if (hsv) continue;
-                    rgb = true;
-                    newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
-                    if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
-
-                    if (b !== newV.b) {
-                      b = newV.b;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'a':
-                    newV.a = value && value.a != null ? value.a | 0 : value | 0;
-                    if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
-
-                    if (a !== newV.a) {
-                      a = newV.a;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'h':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
-                    if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
-
-                    if (h !== newV.h) {
-                      h = newV.h;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 's':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.s = value.s != null ? value.s | 0 : value | 0;
-                    if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
-
-                    if (s !== newV.s) {
-                      s = newV.s;
-                      changed = true;
-                    }
-
-                    break;
-
-                  case 'v':
-                    if (rgb) continue;
-                    hsv = true;
-                    newV.v = value.v != null ? value.v | 0 : value | 0;
-                    if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
-
-                    if (v !== newV.v) {
-                      v = newV.v;
-                      changed = true;
-                    }
-
-                    break;
-                }
-              }
-
-              if (changed) {
-                if (rgb) {
-                  r = r || 0;
-                  g = g || 0;
-                  b = b || 0;
-
-                  var _ret2 = ColorMethods.rgbToHsv({
-                    r: r,
-                    g: g,
-                    b: b
-                  });
-
-                  h = _ret2.h;
-                  s = _ret2.s;
-                  v = _ret2.v;
-                } else if (hsv) {
-                  h = h || 0;
-                  s = s != null ? s : 100;
-                  v = v != null ? v : 100;
-
-                  var _ret3 = ColorMethods.hsvToRgb({
-                    h: h,
-                    s: s,
-                    v: v
-                  });
-
-                  r = _ret3.r;
-                  g = _ret3.g;
-                  b = _ret3.b;
+              {
+                if (value && (!isNullish$1(value.ahex) || !isNullish$1(value.hex))) {
+                  val.call(that, 'ahex', value.ahex || value.hex || '00000000', context);
+                  return undefined;
                 }
 
-                a = a != null ? a : 255;
-                fireChangeEvents.call($this, context || $this);
-              }
+                var newV = {};
+                var rgb = false,
+                    hsv = false;
+                if (value.r !== undefined && !name.includes('r')) name += 'r';
+                if (value.g !== undefined && !name.includes('g')) name += 'g';
+                if (value.b !== undefined && !name.includes('b')) name += 'b';
+                if (value.a !== undefined && !name.includes('a')) name += 'a';
+                if (value.h !== undefined && !name.includes('h')) name += 'h';
+                if (value.s !== undefined && !name.includes('s')) name += 's';
+                if (value.v !== undefined && !name.includes('v')) name += 'v';
 
-              break;
+                _toConsumableArray(name).forEach(function (ch) {
+                  switch (ch) {
+                    case 'r':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.r = value.r && value.r | 0 || value | 0 || 0;
+                      if (newV.r < 0) newV.r = 0;else if (newV.r > 255) newV.r = 255;
+
+                      if (r !== newV.r) {
+                        r = newV.r;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'g':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.g = value && value.g && value.g | 0 || value && value | 0 || 0;
+                      if (newV.g < 0) newV.g = 0;else if (newV.g > 255) newV.g = 255;
+
+                      if (g !== newV.g) {
+                        g = newV.g;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'b':
+                      if (hsv) return;
+                      rgb = true;
+                      newV.b = value && value.b && value.b | 0 || value && value | 0 || 0;
+                      if (newV.b < 0) newV.b = 0;else if (newV.b > 255) newV.b = 255;
+
+                      if (b !== newV.b) {
+                        b = newV.b;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'a':
+                      newV.a = value && !isNullish$1(value.a) ? value.a | 0 : value | 0;
+                      if (newV.a < 0) newV.a = 0;else if (newV.a > 255) newV.a = 255;
+
+                      if (a !== newV.a) {
+                        a = newV.a;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'h':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.h = value && value.h && value.h | 0 || value && value | 0 || 0;
+                      if (newV.h < 0) newV.h = 0;else if (newV.h > 360) newV.h = 360;
+
+                      if (h !== newV.h) {
+                        h = newV.h;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 's':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.s = !isNullish$1(value.s) ? value.s | 0 : value | 0;
+                      if (newV.s < 0) newV.s = 0;else if (newV.s > 100) newV.s = 100;
+
+                      if (s !== newV.s) {
+                        s = newV.s;
+                        changed = true;
+                      }
+
+                      break;
+
+                    case 'v':
+                      if (rgb) return;
+                      hsv = true;
+                      newV.v = !isNullish$1(value.v) ? value.v | 0 : value | 0;
+                      if (newV.v < 0) newV.v = 0;else if (newV.v > 100) newV.v = 100;
+
+                      if (v !== newV.v) {
+                        v = newV.v;
+                        changed = true;
+                      }
+
+                      break;
+                  }
+                });
+
+                if (changed) {
+                  if (rgb) {
+                    r = r || 0;
+                    g = g || 0;
+                    b = b || 0;
+
+                    var _ret2 = ColorMethods.rgbToHsv({
+                      r: r,
+                      g: g,
+                      b: b
+                    });
+
+                    h = _ret2.h;
+                    s = _ret2.s;
+                    v = _ret2.v;
+                  } else if (hsv) {
+                    h = h || 0;
+                    s = !isNullish$1(s) ? s : 100;
+                    v = !isNullish$1(v) ? v : 100;
+
+                    var _ret3 = ColorMethods.hsvToRgb({
+                      h: h,
+                      s: s,
+                      v: v
+                    });
+
+                    r = _ret3.r;
+                    g = _ret3.g;
+                    b = _ret3.b;
+                  }
+
+                  a = !isNullish$1(a) ? a : 255;
+                  fireChangeEvents.call(that, context || that);
+                }
+
+                break;
+              }
           }
+
+          return undefined;
         }
+        /**
+        * @param {GenericCallback} callback
+        * @returns {undefined}
+        */
+
 
         function bind(callback) {
+          // eslint-disable-line promise/prefer-await-to-callbacks
           if (typeof callback === 'function') changeEvents.push(callback);
         }
+        /**
+        * @param {GenericCallback} callback
+        * @returns {undefined}
+        */
+
 
         function unbind(callback) {
+          // eslint-disable-line promise/prefer-await-to-callbacks
           if (typeof callback !== 'function') return;
           var i;
 
@@ -25172,6 +25848,11 @@
             changeEvents.splice(i, 1);
           }
         }
+        /**
+        * Unset `changeEvents`
+        * @returns {undefined}
+        */
+
 
         function destroy() {
           changeEvents = null;
@@ -25185,7 +25866,7 @@
             s,
             v,
             changeEvents = [];
-        $.extend(true, $this, {
+        $.extend(true, that, {
           // public properties and methods
           val: val,
           bind: bind,
@@ -25194,16 +25875,16 @@
         });
 
         if (init) {
-          if (init.ahex != null) {
+          if (!isNullish$1(init.ahex)) {
             val('ahex', init);
-          } else if (init.hex != null) {
-            val((init.a != null ? 'a' : '') + 'hex', init.a != null ? {
+          } else if (!isNullish$1(init.hex)) {
+            val((!isNullish$1(init.a) ? 'a' : '') + 'hex', !isNullish$1(init.a) ? {
               ahex: init.hex + ColorMethods.intToHex(init.a)
             } : init);
-          } else if (init.r != null && init.g != null && init.b != null) {
-            val('rgb' + (init.a != null ? 'a' : ''), init);
-          } else if (init.h != null && init.s != null && init.v != null) {
-            val('hsv' + (init.a != null ? 'a' : ''), init);
+          } else if (!isNullish$1(init.r) && !isNullish$1(init.g) && !isNullish$1(init.b)) {
+            val('rgb' + (!isNullish$1(init.a) ? 'a' : ''), init);
+          } else if (!isNullish$1(init.h) && !isNullish$1(init.s) && !isNullish$1(init.v)) {
+            val('hsv' + (!isNullish$1(init.a) ? 'a' : ''), init);
           }
         }
       },
@@ -25378,8 +26059,8 @@
           } else {
             if (h === 360) h = 0;
             h /= 60;
-            s = s / 100;
-            v = v / 100;
+            s /= 100;
+            v /= 100;
             var i = h | 0,
                 f = h - i,
                 p = v * (1 - s),
@@ -25443,6 +26124,28 @@
      * @see {@link external:jQuery.fn.$.fn.jPicker}
      */
 
+    /**
+    * Will be bound to active {@link jQuery.jPicker.Color}
+    * @callback module:jPicker.LiveCallback
+    * @param {external:jQuery} ui
+    * @param {Element} context
+    * @returns {undefined}
+    */
+
+    /**
+    * @callback module:jPicker.CommitCallback
+    * @param {external:jQuery.jPicker.Color} activeColor
+    * @param {external:jQuery} okButton
+    * @returns {undefined} Return value not used.
+    */
+
+    /**
+     * @callback module:jPicker.CancelCallback
+     * @param {external:jQuery.jPicker.Color} activeColor
+     * @param {external:jQuery} cancelButton
+     * @returns {undefined} Return value not used.
+     */
+
     /**
     * While it would seem this should specify the name `jPicker` for JSDoc, that doesn't
     *   get us treated as a function as well as a namespace (even with `@function name`),
@@ -25450,46 +26153,48 @@
     * @namespace
     * @memberof external:jQuery.fn
     * @param {external:jQuery.fn.jPickerOptions} options
+    * @param {module:jPicker.CommitCallback} [commitCallback]
+    * @param {module:jPicker.LiveCallback} [liveCallback]
+    * @param {module:jPicker.CancelCallback} [cancelCallback]
     * @returns {external:jQuery}
     */
 
-    $.fn.jPicker = function (options) {
-      var $arguments = arguments;
+    $.fn.jPicker = function (options, commitCallback, liveCallback, cancelCallback) {
       return this.each(function () {
-        var $this = this,
+        var that = this,
             settings = $.extend(true, {}, $.fn.jPicker.defaults, options); // local copies for YUI compressor
 
-        if ($($this).get(0).nodeName.toLowerCase() === 'input') {
+        if ($(that).get(0).nodeName.toLowerCase() === 'input') {
           // Add color picker icon if binding to an input element and bind the events to the input
           $.extend(true, settings, {
             window: {
               bindToInput: true,
               expandable: true,
-              input: $($this)
+              input: $(that)
             }
           });
 
-          if ($($this).val() === '') {
+          if ($(that).val() === '') {
             settings.color.active = new Color({
               hex: null
             });
             settings.color.current = new Color({
               hex: null
             });
-          } else if (ColorMethods.validateHex($($this).val())) {
+          } else if (ColorMethods.validateHex($(that).val())) {
             settings.color.active = new Color({
-              hex: $($this).val(),
+              hex: $(that).val(),
               a: settings.color.active.val('a')
             });
             settings.color.current = new Color({
-              hex: $($this).val(),
+              hex: $(that).val(),
               a: settings.color.active.val('a')
             });
           }
         }
 
         if (settings.window.expandable) {
-          $($this).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
+          $(that).after('<span class="jPicker"><span class="Icon"><span class="Color">&nbsp;</span><span class="Alpha">&nbsp;</span><span class="Image" title="Click To Open Color Picker">&nbsp;</span><span class="Container">&nbsp;</span></span></span>');
         } else {
           settings.window.liveUpdate = false; // Basic control binding for inline use - You will need to override the liveCallback or commitCallback function to retrieve results
         }
@@ -25499,7 +26204,7 @@
 
         /**
          *
-         * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode [description]
+         * @param {"h"|"s"|"v"|"r"|"g"|"b"|"a"} colorMode
          * @throws {Error} Invalid mode
          * @returns {undefined}
          */
@@ -25513,22 +26218,22 @@
           switch (colorMode) {
             case 'h':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, 0);
-                setAlpha.call($this, colorMapL1, 100);
-                setImgLoc.call($this, colorMapL2, 260);
-                setAlpha.call($this, colorMapL2, 100);
-                setBG.call($this, colorBarDiv, 'transparent');
-                setImgLoc.call($this, colorBarL1, 0);
-                setAlpha.call($this, colorBarL1, 100);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL3, 260);
-                setAlpha.call($this, colorBarL3, 100);
-                setImgLoc.call($this, colorBarL4, 260);
-                setAlpha.call($this, colorBarL4, 100);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, 0);
+                setAlpha.call(that, colorMapL1, 100);
+                setImgLoc.call(that, colorMapL2, 260);
+                setAlpha.call(that, colorMapL2, 100);
+                setBG.call(that, colorBarDiv, 'transparent');
+                setImgLoc.call(that, colorBarL1, 0);
+                setAlpha.call(that, colorBarL1, 100);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL3, 260);
+                setAlpha.call(that, colorBarL3, 100);
+                setImgLoc.call(that, colorBarL4, 260);
+                setAlpha.call(that, colorBarL4, 100);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25540,7 +26245,7 @@
                 minY: 0,
                 maxY: 360
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('s'),
                 y: 100 - active.val('v')
@@ -25550,13 +26255,13 @@
 
             case 's':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, -260);
-                setImgLoc.call($this, colorMapL2, -520);
-                setImgLoc.call($this, colorBarL1, -260);
-                setImgLoc.call($this, colorBarL2, -520);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, -260);
+                setImgLoc.call(that, colorMapL2, -520);
+                setImgLoc.call(that, colorBarL1, -260);
+                setImgLoc.call(that, colorBarL2, -520);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25568,7 +26273,7 @@
                 minY: 0,
                 maxY: 100
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('v')
@@ -25578,15 +26283,15 @@
 
             case 'v':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, '000000');
-                setImgLoc.call($this, colorMapL1, -780);
-                setImgLoc.call($this, colorMapL2, 260);
-                setBG.call($this, colorBarDiv, hex);
-                setImgLoc.call($this, colorBarL1, -520);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, '000000');
+                setImgLoc.call(that, colorMapL1, -780);
+                setImgLoc.call(that, colorMapL2, 260);
+                setBG.call(that, colorBarDiv, hex);
+                setImgLoc.call(that, colorBarL1, -520);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25598,7 +26303,7 @@
                 minY: 0,
                 maxY: 100
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('s')
@@ -25619,7 +26324,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('b'),
                 y: 255 - active.val('g')
@@ -25640,7 +26345,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('b'),
                 y: 255 - active.val('r')
@@ -25661,7 +26366,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('r'),
                 y: 255 - active.val('g')
@@ -25671,14 +26376,14 @@
 
             case 'a':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setImgLoc.call($this, colorMapL1, -260);
-                setImgLoc.call($this, colorMapL2, -520);
-                setImgLoc.call($this, colorBarL1, 260);
-                setImgLoc.call($this, colorBarL2, 260);
-                setAlpha.call($this, colorBarL2, 100);
-                setImgLoc.call($this, colorBarL6, 0);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setImgLoc.call(that, colorMapL1, -260);
+                setImgLoc.call(that, colorMapL2, -520);
+                setImgLoc.call(that, colorBarL1, 260);
+                setImgLoc.call(that, colorBarL2, 260);
+                setAlpha.call(that, colorBarL2, 100);
+                setImgLoc.call(that, colorBarL6, 0);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               colorMap.range('all', {
                 minX: 0,
@@ -25690,7 +26395,7 @@
                 minY: 0,
                 maxY: 255
               });
-              if (active.val('ahex') == null) break;
+              if (isNullish$1(active.val('ahex'))) break;
               colorMap.val('xy', {
                 x: active.val('h'),
                 y: 100 - active.val('v')
@@ -25710,12 +26415,12 @@
             case 'v':
             case 'a':
               setTimeout(function () {
-                setAlpha.call($this, colorMapL1, 100);
-                setAlpha.call($this, colorBarL1, 100);
-                setImgLoc.call($this, colorBarL3, 260);
-                setAlpha.call($this, colorBarL3, 100);
-                setImgLoc.call($this, colorBarL4, 260);
-                setAlpha.call($this, colorBarL4, 100);
+                setAlpha.call(that, colorMapL1, 100);
+                setAlpha.call(that, colorBarL1, 100);
+                setImgLoc.call(that, colorBarL3, 260);
+                setAlpha.call(that, colorBarL3, 100);
+                setImgLoc.call(that, colorBarL4, 260);
+                setAlpha.call(that, colorBarL4, 100);
               }, 0);
               break;
 
@@ -25723,40 +26428,52 @@
             case 'g':
             case 'b':
               setTimeout(function () {
-                setBG.call($this, colorMapDiv, 'transparent');
-                setBG.call($this, colorBarDiv, 'transparent');
-                setAlpha.call($this, colorBarL1, 100);
-                setAlpha.call($this, colorMapL1, 100);
-                setImgLoc.call($this, colorMapL1, rgbMap);
-                setImgLoc.call($this, colorMapL2, rgbMap - 260);
-                setImgLoc.call($this, colorBarL1, rgbBar - 780);
-                setImgLoc.call($this, colorBarL2, rgbBar - 520);
-                setImgLoc.call($this, colorBarL3, rgbBar);
-                setImgLoc.call($this, colorBarL4, rgbBar - 260);
-                setImgLoc.call($this, colorBarL6, 260);
-                setAlpha.call($this, colorBarL6, 100);
+                setBG.call(that, colorMapDiv, 'transparent');
+                setBG.call(that, colorBarDiv, 'transparent');
+                setAlpha.call(that, colorBarL1, 100);
+                setAlpha.call(that, colorMapL1, 100);
+                setImgLoc.call(that, colorMapL1, rgbMap);
+                setImgLoc.call(that, colorMapL2, rgbMap - 260);
+                setImgLoc.call(that, colorBarL1, rgbBar - 780);
+                setImgLoc.call(that, colorBarL2, rgbBar - 520);
+                setImgLoc.call(that, colorBarL3, rgbBar);
+                setImgLoc.call(that, colorBarL4, rgbBar - 260);
+                setImgLoc.call(that, colorBarL6, 260);
+                setAlpha.call(that, colorBarL6, 100);
               }, 0);
               break;
           }
 
-          if (active.val('ahex') == null) return;
-          activeColorChanged.call($this, active);
-        } // Update color when user changes text values
+          if (isNullish$1(active.val('ahex'))) return;
+          activeColorChanged.call(that, active);
+        }
+        /**
+         * Update color when user changes text values.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function activeColorChanged(ui, context) {
-          if (context == null || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call($this, ui, context);
+          if (isNullish$1(context) || context !== colorBar && context !== colorMap) positionMapAndBarArrows.call(that, ui, context);
           setTimeout(function () {
-            updatePreview.call($this, ui);
-            updateMapVisuals.call($this, ui);
-            updateBarVisuals.call($this, ui);
+            updatePreview.call(that, ui);
+            updateMapVisuals.call(that, ui);
+            updateBarVisuals.call(that, ui);
           }, 0);
-        } // user has dragged the ColorMap pointer
+        }
+        /**
+         * User has dragged the ColorMap pointer.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function mapValueChanged(ui, context) {
           var active = color.active;
-          if (context !== colorMap && active.val() == null) return;
+          if (context !== colorMap && isNullish$1(active.val())) return;
           var xy = ui.val('all');
 
           switch (settings.color.mode) {
@@ -25803,12 +26520,18 @@
               }, context);
               break;
           }
-        } // user has dragged the ColorBar slider
+        }
+        /**
+         * User has dragged the ColorBar slider.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function colorBarValueChanged(ui, context) {
           var active = color.active;
-          if (context !== colorBar && active.val() == null) return;
+          if (context !== colorBar && isNullish$1(active.val())) return;
 
           switch (settings.color.mode) {
             case 'h':
@@ -25851,60 +26574,79 @@
               active.val('a', 255 - ui.val('y'), context);
               break;
           }
-        } // position map and bar arrows to match current color
+        }
+        /**
+         * Position map and bar arrows to match current color.
+         * @param {external:jQuery} ui
+         * @param {?module:jPicker.Slider} context
+         * @returns {undefined}
+        */
 
 
         function positionMapAndBarArrows(ui, context) {
           if (context !== colorMap) {
             switch (settings.color.mode) {
               case 'h':
-                var sv = ui.val('sv');
-                colorMap.val('xy', {
-                  x: sv != null ? sv.s : 100,
-                  y: 100 - (sv != null ? sv.v : 100)
-                }, context);
-                break;
+                {
+                  var sv = ui.val('sv');
+                  colorMap.val('xy', {
+                    x: !isNullish$1(sv) ? sv.s : 100,
+                    y: 100 - (!isNullish$1(sv) ? sv.v : 100)
+                  }, context);
+                  break;
+                }
+
+              case 's': // Fall through
 
-              case 's':
               case 'a':
-                var hv = ui.val('hv');
-                colorMap.val('xy', {
-                  x: hv && hv.h || 0,
-                  y: 100 - (hv != null ? hv.v : 100)
-                }, context);
-                break;
+                {
+                  var hv = ui.val('hv');
+                  colorMap.val('xy', {
+                    x: hv && hv.h || 0,
+                    y: 100 - (!isNullish$1(hv) ? hv.v : 100)
+                  }, context);
+                  break;
+                }
 
               case 'v':
-                var hs = ui.val('hs');
-                colorMap.val('xy', {
-                  x: hs && hs.h || 0,
-                  y: 100 - (hs != null ? hs.s : 100)
-                }, context);
-                break;
+                {
+                  var hs = ui.val('hs');
+                  colorMap.val('xy', {
+                    x: hs && hs.h || 0,
+                    y: 100 - (!isNullish$1(hs) ? hs.s : 100)
+                  }, context);
+                  break;
+                }
 
               case 'r':
-                var bg = ui.val('bg');
-                colorMap.val('xy', {
-                  x: bg && bg.b || 0,
-                  y: 255 - (bg && bg.g || 0)
-                }, context);
-                break;
+                {
+                  var bg = ui.val('bg');
+                  colorMap.val('xy', {
+                    x: bg && bg.b || 0,
+                    y: 255 - (bg && bg.g || 0)
+                  }, context);
+                  break;
+                }
 
               case 'g':
-                var br = ui.val('br');
-                colorMap.val('xy', {
-                  x: br && br.b || 0,
-                  y: 255 - (br && br.r || 0)
-                }, context);
-                break;
+                {
+                  var br = ui.val('br');
+                  colorMap.val('xy', {
+                    x: br && br.b || 0,
+                    y: 255 - (br && br.r || 0)
+                  }, context);
+                  break;
+                }
 
               case 'b':
-                var rg = ui.val('rg');
-                colorMap.val('xy', {
-                  x: rg && rg.r || 0,
-                  y: 255 - (rg && rg.g || 0)
-                }, context);
-                break;
+                {
+                  var rg = ui.val('rg');
+                  colorMap.val('xy', {
+                    x: rg && rg.r || 0,
+                    y: 255 - (rg && rg.g || 0)
+                  }, context);
+                  break;
+                }
             }
           }
 
@@ -25915,14 +26657,18 @@
                 break;
 
               case 's':
-                var s = ui.val('s');
-                colorBar.val('y', 100 - (s != null ? s : 100), context);
-                break;
+                {
+                  var s = ui.val('s');
+                  colorBar.val('y', 100 - (!isNullish$1(s) ? s : 100), context);
+                  break;
+                }
 
               case 'v':
-                var v = ui.val('v');
-                colorBar.val('y', 100 - (v != null ? v : 100), context);
-                break;
+                {
+                  var v = ui.val('v');
+                  colorBar.val('y', 100 - (!isNullish$1(v) ? v : 100), context);
+                  break;
+                }
 
               case 'r':
                 colorBar.val('y', 255 - (ui.val('r') || 0), context);
@@ -25937,12 +26683,19 @@
                 break;
 
               case 'a':
-                var a = ui.val('a');
-                colorBar.val('y', 255 - (a != null ? a : 255), context);
-                break;
+                {
+                  var a = ui.val('a');
+                  colorBar.val('y', 255 - (!isNullish$1(a) ? a : 255), context);
+                  break;
+                }
             }
           }
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updatePreview(ui) {
           try {
@@ -25950,14 +26703,19 @@
             activePreview.css({
               backgroundColor: all && '#' + all.hex || 'transparent'
             });
-            setAlpha.call($this, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
+            setAlpha.call(that, activePreview, all && toFixedNumeric(all.a * 100 / 255, 4) || 0);
           } catch (e) {}
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updateMapVisuals(ui) {
           switch (settings.color.mode) {
             case 'h':
-              setBG.call($this, colorMapDiv, new Color({
+              setBG.call(that, colorMapDiv, new Color({
                 h: ui.val('h') || 0,
                 s: 100,
                 v: 100
@@ -25966,104 +26724,133 @@
 
             case 's':
             case 'a':
-              var s = ui.val('s');
-              setAlpha.call($this, colorMapL2, 100 - (s != null ? s : 100));
-              break;
+              {
+                var s = ui.val('s');
+                setAlpha.call(that, colorMapL2, 100 - (!isNullish$1(s) ? s : 100));
+                break;
+              }
 
             case 'v':
-              var v = ui.val('v');
-              setAlpha.call($this, colorMapL1, v != null ? v : 100);
-              break;
+              {
+                var v = ui.val('v');
+                setAlpha.call(that, colorMapL1, !isNullish$1(v) ? v : 100);
+                break;
+              }
 
             case 'r':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('r') || 0) / 255 * 100, 4));
               break;
 
             case 'g':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('g') || 0) / 255 * 100, 4));
               break;
 
             case 'b':
-              setAlpha.call($this, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
+              setAlpha.call(that, colorMapL2, toFixedNumeric((ui.val('b') || 0) / 255 * 100));
               break;
           }
 
           var a = ui.val('a');
-          setAlpha.call($this, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+          setAlpha.call(that, colorMapL3, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
+
 
         function updateBarVisuals(ui) {
           switch (settings.color.mode) {
             case 'h':
-              var a = ui.val('a');
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var a = ui.val('a');
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 's':
-              var hva = ui.val('hva'),
-                  saturatedColor = new Color({
-                h: hva && hva.h || 0,
-                s: 100,
-                v: hva != null ? hva.v : 100
-              });
-              setBG.call($this, colorBarDiv, saturatedColor.val('hex'));
-              setAlpha.call($this, colorBarL2, 100 - (hva != null ? hva.v : 100));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var hva = ui.val('hva'),
+                    saturatedColor = new Color({
+                  h: hva && hva.h || 0,
+                  s: 100,
+                  v: !isNullish$1(hva) ? hva.v : 100
+                });
+                setBG.call(that, colorBarDiv, saturatedColor.val('hex'));
+                setAlpha.call(that, colorBarL2, 100 - (!isNullish$1(hva) ? hva.v : 100));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hva && hva.a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 'v':
-              var hsa = ui.val('hsa'),
-                  valueColor = new Color({
-                h: hsa && hsa.h || 0,
-                s: hsa != null ? hsa.s : 100,
-                v: 100
-              });
-              setBG.call($this, colorBarDiv, valueColor.val('hex'));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
-              break;
+              {
+                var hsa = ui.val('hsa'),
+                    valueColor = new Color({
+                  h: hsa && hsa.h || 0,
+                  s: !isNullish$1(hsa) ? hsa.s : 100,
+                  v: 100
+                });
+                setBG.call(that, colorBarDiv, valueColor.val('hex'));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (hsa && hsa.a || 0)) * 100 / 255, 4));
+                break;
+              }
 
             case 'r':
             case 'g':
             case 'b':
-              var rgba = ui.val('rgba');
-              var hValue = 0,
-                  vValue = 0;
+              {
+                var rgba = ui.val('rgba');
+                var hValue = 0,
+                    vValue = 0;
 
-              if (settings.color.mode === 'r') {
-                hValue = rgba && rgba.b || 0;
-                vValue = rgba && rgba.g || 0;
-              } else if (settings.color.mode === 'g') {
-                hValue = rgba && rgba.b || 0;
-                vValue = rgba && rgba.r || 0;
-              } else if (settings.color.mode === 'b') {
-                hValue = rgba && rgba.r || 0;
-                vValue = rgba && rgba.g || 0;
+                if (settings.color.mode === 'r') {
+                  hValue = rgba && rgba.b || 0;
+                  vValue = rgba && rgba.g || 0;
+                } else if (settings.color.mode === 'g') {
+                  hValue = rgba && rgba.b || 0;
+                  vValue = rgba && rgba.r || 0;
+                } else if (settings.color.mode === 'b') {
+                  hValue = rgba && rgba.r || 0;
+                  vValue = rgba && rgba.g || 0;
+                }
+
+                var middle = vValue > hValue ? hValue : vValue;
+                setAlpha.call(that, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
+                setAlpha.call(that, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
+                setAlpha.call(that, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
+                setAlpha.call(that, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
+                break;
               }
 
-              var middle = vValue > hValue ? hValue : vValue;
-              setAlpha.call($this, colorBarL2, hValue > vValue ? toFixedNumeric((hValue - vValue) / (255 - vValue) * 100, 4) : 0);
-              setAlpha.call($this, colorBarL3, vValue > hValue ? toFixedNumeric((vValue - hValue) / (255 - hValue) * 100, 4) : 0);
-              setAlpha.call($this, colorBarL4, toFixedNumeric(middle / 255 * 100, 4));
-              setAlpha.call($this, colorBarL5, toFixedNumeric((255 - (rgba && rgba.a || 0)) * 100 / 255, 4));
-              break;
-
             case 'a':
               {
                 var _a = ui.val('a');
 
-                setBG.call($this, colorBarDiv, ui.val('hex') || '000000');
-                setAlpha.call($this, colorBarL5, _a != null ? 0 : 100);
-                setAlpha.call($this, colorBarL6, _a != null ? 100 : 0);
+                setBG.call(that, colorBarDiv, ui.val('hex') || '000000');
+                setAlpha.call(that, colorBarL5, !isNullish$1(_a) ? 0 : 100);
+                setAlpha.call(that, colorBarL6, !isNullish$1(_a) ? 100 : 0);
                 break;
               }
           }
         }
+        /**
+        * @param {external:jQuery} el
+        * @param {string} [c="transparent"]
+        * @returns {undefined}
+        */
+
 
         function setBG(el, c) {
           el.css({
             backgroundColor: c && c.length === 6 && '#' + c || 'transparent'
           });
         }
+        /**
+        * @param {external:jQuery} img
+        * @param {string} src The image source
+        * @returns {undefined}
+        */
+
 
         function setImg(img, src) {
           if (isLessThanIE7 && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
@@ -26076,12 +26863,24 @@
             backgroundImage: 'url(\'' + src + '\')'
           });
         }
+        /**
+        * @param {external:jQuery} img
+        * @param {Float} y
+        * @returns {undefined}
+        */
+
 
         function setImgLoc(img, y) {
           img.css({
             top: y + 'px'
           });
         }
+        /**
+        * @param {external:jQuery} obj
+        * @param {Float} alpha
+        * @returns {undefined}
+        */
+
 
         function setAlpha(obj, alpha) {
           obj.css({
@@ -26092,7 +26891,7 @@
             if (isLessThanIE7) {
               var src = obj.attr('pngSrc');
 
-              if (src != null && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
+              if (!isNullish$1(src) && (src.includes('AlphaBar.png') || src.includes('Bars.png') || src.includes('Maps.png'))) {
                 obj.css({
                   filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + src + '\', sizingMethod=\'scale\') progid:DXImageTransform.Microsoft.Alpha(opacity=' + alpha + ')'
                 });
@@ -26106,7 +26905,7 @@
             if (isLessThanIE7) {
               var _src = obj.attr('pngSrc');
 
-              if (_src != null && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
+              if (!isNullish$1(_src) && (_src.includes('AlphaBar.png') || _src.includes('Bars.png') || _src.includes('Maps.png'))) {
                 obj.css({
                   filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + _src + '\', sizingMethod=\'scale\')'
                 });
@@ -26117,66 +26916,114 @@
               opacity: ''
             });
           }
-        } // revert color to original color when opened
+        }
+        /**
+        * Revert color to original color when opened.
+        * @returns {undefined}
+        */
 
 
         function revertColor() {
           color.active.val('ahex', color.current.val('ahex'));
-        } // commit the color changes
+        }
+        /**
+        * Commit the color changes.
+        * @returns {undefined}
+        */
 
 
         function commitColor() {
           color.current.val('ahex', color.active.val('ahex'));
         }
+        /**
+        * @param {Event} e
+        * @returns {undefined}
+        */
+
 
         function radioClicked(e) {
           $(this).parents('tbody:first').find('input:radio[value!="' + e.target.value + '"]').removeAttr('checked');
-          setColorMode.call($this, e.target.value);
+          setColorMode.call(that, e.target.value);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function currentClicked() {
-          revertColor.call($this);
+          revertColor.call(that);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function cancelClicked() {
-          revertColor.call($this);
-          settings.window.expandable && hide.call($this);
-          typeof cancelCallback === 'function' && cancelCallback.call($this, color.active, cancelButton);
+          revertColor.call(that);
+          settings.window.expandable && hide.call(that);
+          typeof cancelCallback === 'function' && cancelCallback.call(that, color.active, cancelButton);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function okClicked() {
-          commitColor.call($this);
-          settings.window.expandable && hide.call($this);
-          typeof commitCallback === 'function' && commitCallback.call($this, color.active, okButton);
+          commitColor.call(that);
+          settings.window.expandable && hide.call(that);
+          typeof commitCallback === 'function' && commitCallback.call(that, color.active, okButton);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function iconImageClicked() {
-          show.call($this);
+          show.call(that);
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
 
-        function currentColorChanged(ui, context) {
+
+        function currentColorChanged(ui) {
           var hex = ui.val('hex');
           currentPreview.css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          setAlpha.call($this, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
+          setAlpha.call(that, currentPreview, toFixedNumeric((ui.val('a') || 0) * 100 / 255, 4));
         }
+        /**
+        * @param {external:jQuery} ui
+        * @returns {undefined}
+        */
 
-        function expandableColorChanged(ui, context) {
+
+        function expandableColorChanged(ui) {
           var hex = ui.val('hex');
           var va = ui.val('va');
           iconColor.css({
             backgroundColor: hex && '#' + hex || 'transparent'
           });
-          setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
+          setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (va && va.a || 0)) * 100 / 255, 4));
 
           if (settings.window.bindToInput && settings.window.updateInputColor) {
             settings.window.input.css({
               backgroundColor: hex && '#' + hex || 'transparent',
-              color: va == null || va.v > 75 ? '#000000' : '#ffffff'
+              color: isNullish$1(va) || va.v > 75 ? '#000000' : '#ffffff'
             });
           }
         }
+        /**
+        * @param {Event} e
+        * @returns {undefined}
+        */
+
 
         function moveBarMouseDown(e) {
           // const {element} = settings.window, // local copies for YUI compressor
@@ -26189,20 +27036,34 @@
           $(document).bind('mousemove', documentMouseMove).bind('mouseup', documentMouseUp);
           e.preventDefault(); // prevent attempted dragging of the column
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function documentMouseMove(e) {
           container.css({
             left: elementStartX - (pageStartX - e.pageX) + 'px',
             top: elementStartY - (pageStartY - e.pageY) + 'px'
           });
-          if (settings.window.expandable && !$.support.boxModel) container.prev().css({
-            left: container.css('left'),
-            top: container.css('top')
-          });
+
+          if (settings.window.expandable && !$.support.boxModel) {
+            container.prev().css({
+              left: container.css('left'),
+              top: container.css('top')
+            });
+          }
+
           e.stopPropagation();
           e.preventDefault();
           return false;
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function documentMouseUp(e) {
           $(document).unbind('mousemove', documentMouseMove).unbind('mouseup', documentMouseUp);
@@ -26210,6 +27071,11 @@
           e.preventDefault();
           return false;
         }
+        /**
+        * @param {Event} e
+        * @returns {false}
+        */
+
 
         function quickPickClicked(e) {
           e.preventDefault();
@@ -26217,9 +27083,18 @@
           color.active.val('ahex', $(this).attr('title') || null, e.target);
           return false;
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function show() {
           color.current.val('ahex', color.active.val('ahex'));
+          /**
+          *
+          * @returns {undefined}
+          */
 
           function attachIFrame() {
             if (!settings.window.expandable || $.support.boxModel) return;
@@ -26259,8 +27134,17 @@
               break;
           }
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function hide() {
+          /**
+          *
+          * @returns {undefined}
+          */
           function removeIFrame() {
             if (settings.window.expandable) container.css({
               zIndex: 10
@@ -26284,23 +27168,29 @@
               break;
           }
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function initialize() {
           var win = settings.window,
-              popup = win.expandable ? $($this).next().find('.Container:first') : null;
-          container = win.expandable ? $('<div/>') : $($this);
+              popup = win.expandable ? $(that).next().find('.Container:first') : null;
+          container = win.expandable ? $('<div/>') : $(that);
           container.addClass('jPicker Container');
           if (win.expandable) container.hide();
 
-          container.get(0).onselectstart = function (event) {
-            if (event.target.nodeName.toLowerCase() !== 'input') return false;
+          container.get(0).onselectstart = function (e) {
+            if (e.target.nodeName.toLowerCase() !== 'input') return false;
+            return true;
           }; // inject html source code - we are using a single table for this control - I know tables are considered bad, but it takes care of equal height columns and
           // this control really is tabular data, so I believe it is the right move
 
 
           var all = color.active.val('all');
           if (win.alphaPrecision < 0) win.alphaPrecision = 0;else if (win.alphaPrecision > 2) win.alphaPrecision = 2;
-          var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(all != null ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(all != null ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(all != null ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(all != null ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
+          var controlHtml = "<table class=\"jPicker\" cellpadding=\"0\" cellspacing=\"0\">\n          <tbody>\n            ".concat(win.expandable ? "<tr><td class=\"Move\" colspan=\"5\">&nbsp;</td></tr>" : '', "\n            <tr>\n              <td rowspan=\"9\"><h2 class=\"Title\">").concat(win.title || localization.text.title, "</h2><div class=\"Map\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorMap.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td rowspan=\"9\"><div class=\"Bar\"><span class=\"Map1\">&nbsp;</span><span class=\"Map2\">&nbsp;</span><span class=\"Map3\">&nbsp;</span><span class=\"Map4\">&nbsp;</span><span class=\"Map5\">&nbsp;</span><span class=\"Map6\">&nbsp;</span><img src=\"").concat(images.clientPath + images.colorBar.arrow.file, "\" class=\"Arrow\"/></div></td>\n              <td colspan=\"2\" class=\"Preview\">").concat(localization.text.newColor, "<div><span class=\"Active\" title=\"").concat(localization.tooltips.colors.newColor, "\">&nbsp;</span><span class=\"Current\" title=\"").concat(localization.tooltips.colors.currentColor, "\">&nbsp;</span></div>").concat(localization.text.currentColor, "</td>\n              <td rowspan=\"9\" class=\"Button\"><input type=\"button\" class=\"Ok\" value=\"").concat(localization.text.ok, "\" title=\"").concat(localization.tooltips.buttons.ok, "\"/><input type=\"button\" class=\"Cancel\" value=\"").concat(localization.text.cancel, "\" title=\"").concat(localization.tooltips.buttons.cancel, "\"/><hr/><div class=\"Grid\">&nbsp;</div></td>\n            </tr>\n            <tr class=\"Hue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.hue.radio, "\"><input type=\"radio\" value=\"h\"").concat(settings.color.mode === 'h' ? ' checked="checked"' : '', "/>H:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.h : '', "\" title=\"").concat(localization.tooltips.hue.textbox, "\"/>&nbsp;&deg;</td>\n            </tr>\n            <tr class=\"Saturation\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.saturation.radio, "\"><input type=\"radio\" value=\"s\"").concat(settings.color.mode === 's' ? ' checked="checked"' : '', "/>S:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.s : '', "\" title=\"").concat(localization.tooltips.saturation.textbox, "\"/>&nbsp;%</td>\n            </tr>\n            <tr class=\"Value\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.value.radio, "\"><input type=\"radio\" value=\"v\"").concat(settings.color.mode === 'v' ? ' checked="checked"' : '', "/>V:</label><br/><br/></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.v : '', "\" title=\"").concat(localization.tooltips.value.textbox, "\"/>&nbsp;%<br/><br/></td>\n            </tr>\n            <tr class=\"Red\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.red.radio, "\"><input type=\"radio\" value=\"r\"").concat(settings.color.mode === 'r' ? ' checked="checked"' : '', "/>R:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.r : '', "\" title=\"").concat(localization.tooltips.red.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Green\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.green.radio, "\"><input type=\"radio\" value=\"g\"").concat(settings.color.mode === 'g' ? ' checked="checked"' : '', "/>G:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.g : '', "\" title=\"").concat(localization.tooltips.green.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Blue\">\n              <td class=\"Radio\"><label title=\"").concat(localization.tooltips.blue.radio, "\"><input type=\"radio\" value=\"b\"").concat(settings.color.mode === 'b' ? ' checked="checked"' : '', "/>B:</label></td>\n              <td class=\"Text\"><input type=\"text\" maxlength=\"3\" value=\"").concat(!isNullish$1(all) ? all.b : '', "\" title=\"").concat(localization.tooltips.blue.textbox, "\"/></td>\n            </tr>\n            <tr class=\"Alpha\">\n              <td class=\"Radio\">").concat(win.alphaSupport ? "<label title=\"".concat(localization.tooltips.alpha.radio, "\"><input type=\"radio\" value=\"a\"").concat(settings.color.mode === 'a' ? ' checked="checked"' : '', "/>A:</label>") : '&nbsp;', "</td>\n              <td class=\"Text\">").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"".concat(3 + win.alphaPrecision, "\" value=\"").concat(!isNullish$1(all) ? toFixedNumeric(all.a * 100 / 255, win.alphaPrecision) : '', "\" title=\"").concat(localization.tooltips.alpha.textbox, "\"/>&nbsp;%") : '&nbsp;', "</td>\n            </tr>\n            <tr class=\"Hex\">\n              <td colspan=\"2\" class=\"Text\"><label title=\"").concat(localization.tooltips.hex.textbox, "\">#:<input type=\"text\" maxlength=\"6\" class=\"Hex\" value=\"").concat(!isNullish$1(all) ? all.hex : '', "\"/></label>").concat(win.alphaSupport ? "<input type=\"text\" maxlength=\"2\" class=\"AHex\" value=\"".concat(!isNullish$1(all) ? all.ahex.substring(6) : '', "\" title=\"").concat(localization.tooltips.hex.alpha, "\"/></td>") : '&nbsp;', "\n            </tr>\n          </tbody></table>");
 
           if (win.expandable) {
             container.html(controlHtml);
@@ -26326,7 +27216,7 @@
               top: win.position.y === 'top' ? popup.offset().top - 312 + 'px' : win.position.y === 'center' ? popup.offset().top - 156 + 'px' : win.position.y === 'bottom' ? popup.offset().top + 25 + 'px' : popup.offset().top + parseInt(win.position.y) + 'px'
             });
           } else {
-            container = $($this);
+            container = $(that);
             container.html(controlHtml);
           } // initialize the objects to the source code just injected
 
@@ -26371,7 +27261,7 @@
           });
           colorBar.bind(colorBarValueChanged);
           colorPicker = new ColorValuePicker(tbody, color.active, win.expandable && win.bindToInput ? win.input : null, win.alphaPrecision);
-          var hex = all != null ? all.hex : null,
+          var hex = !isNullish$1(all) ? all.hex : null,
               preview = tbody.find('.Preview'),
               button = tbody.find('.Button');
           activePreview = preview.find('.Active:first').css({
@@ -26380,21 +27270,21 @@
           currentPreview = preview.find('.Current:first').css({
             backgroundColor: hex && '#' + hex || 'transparent'
           }).bind('click', currentClicked);
-          setAlpha.call($this, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
+          setAlpha.call(that, currentPreview, toFixedNumeric(color.current.val('a') * 100 / 255, 4));
           okButton = button.find('.Ok:first').bind('click', okClicked);
           cancelButton = button.find('.Cancel:first').bind('click', cancelClicked);
           grid = button.find('.Grid:first');
           setTimeout(function () {
-            setImg.call($this, colorMapL1, images.clientPath + 'Maps.png');
-            setImg.call($this, colorMapL2, images.clientPath + 'Maps.png');
-            setImg.call($this, colorMapL3, images.clientPath + 'map-opacity.png');
-            setImg.call($this, colorBarL1, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL2, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL3, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL4, images.clientPath + 'Bars.png');
-            setImg.call($this, colorBarL5, images.clientPath + 'bar-opacity.png');
-            setImg.call($this, colorBarL6, images.clientPath + 'AlphaBar.png');
-            setImg.call($this, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
+            setImg.call(that, colorMapL1, images.clientPath + 'Maps.png');
+            setImg.call(that, colorMapL2, images.clientPath + 'Maps.png');
+            setImg.call(that, colorMapL3, images.clientPath + 'map-opacity.png');
+            setImg.call(that, colorBarL1, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL2, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL3, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL4, images.clientPath + 'Bars.png');
+            setImg.call(that, colorBarL5, images.clientPath + 'bar-opacity.png');
+            setImg.call(that, colorBarL6, images.clientPath + 'AlphaBar.png');
+            setImg.call(that, preview.find('div:first'), images.clientPath + 'preview-opacity.png');
           }, 0);
           tbody.find('td.Radio input').bind('click', radioClicked); // initialize quick list
 
@@ -26406,47 +27296,55 @@
               if (_typeof(color.quickList[i]).toString().toLowerCase() === 'string') color.quickList[i] = new Color({
                 hex: color.quickList[i]
               });
-              var alpha = color.quickList[i].val('a');
-              var ahex = color.quickList[i].val('ahex');
-              if (!win.alphaSupport && ahex) ahex = ahex.substring(0, 6) + 'ff';
+
+              var _alpha = color.quickList[i].val('a');
+
+              var _ahex = color.quickList[i].val('ahex');
+
+              if (!win.alphaSupport && _ahex) _ahex = _ahex.substring(0, 6) + 'ff';
               var quickHex = color.quickList[i].val('hex');
-              if (!ahex) ahex = '00000000';
-              html += '<span class="QuickColor"' + (' title="#' + ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && alpha && alpha < 255 ? ';opacity:' + toFixedNumeric(alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
+              if (!_ahex) _ahex = '00000000';
+              html += '<span class="QuickColor"' + (' title="#' + _ahex + '"') + ' style="background-color:' + (quickHex && '#' + quickHex || '') + ';' + (quickHex ? '' : 'background-image:url(' + images.clientPath + 'NoColor.png)') + (win.alphaSupport && _alpha && _alpha < 255 ? ';opacity:' + toFixedNumeric(_alpha / 255, 4) + ';filter:Alpha(opacity=' + toFixedNumeric(_alpha / 2.55, 4) + ')' : '') + '">&nbsp;</span>';
             }
 
-            setImg.call($this, grid, images.clientPath + 'bar-opacity.png');
+            setImg.call(that, grid, images.clientPath + 'bar-opacity.png');
             grid.html(html);
             grid.find('.QuickColor').click(quickPickClicked);
           }
 
-          setColorMode.call($this, settings.color.mode);
+          setColorMode.call(that, settings.color.mode);
           color.active.bind(activeColorChanged);
           typeof liveCallback === 'function' && color.active.bind(liveCallback);
           color.current.bind(currentColorChanged); // bind to input
 
           if (win.expandable) {
-            $this.icon = popup.parents('.Icon:first');
-            iconColor = $this.icon.find('.Color:first').css({
+            that.icon = popup.parents('.Icon:first');
+            iconColor = that.icon.find('.Color:first').css({
               backgroundColor: hex && '#' + hex || 'transparent'
             });
-            iconAlpha = $this.icon.find('.Alpha:first');
-            setImg.call($this, iconAlpha, images.clientPath + 'bar-opacity.png');
-            setAlpha.call($this, iconAlpha, toFixedNumeric((255 - (all != null ? all.a : 0)) * 100 / 255, 4));
-            iconImage = $this.icon.find('.Image:first').css({
+            iconAlpha = that.icon.find('.Alpha:first');
+            setImg.call(that, iconAlpha, images.clientPath + 'bar-opacity.png');
+            setAlpha.call(that, iconAlpha, toFixedNumeric((255 - (!isNullish$1(all) ? all.a : 0)) * 100 / 255, 4));
+            iconImage = that.icon.find('.Image:first').css({
               backgroundImage: 'url(\'' + images.clientPath + images.picker.file + '\')'
             }).bind('click', iconImageClicked);
 
             if (win.bindToInput && win.updateInputColor) {
               win.input.css({
                 backgroundColor: hex && '#' + hex || 'transparent',
-                color: all == null || all.v > 75 ? '#000000' : '#ffffff'
+                color: isNullish$1(all) || all.v > 75 ? '#000000' : '#ffffff'
               });
             }
 
             moveBar = tbody.find('.Move:first').bind('mousedown', moveBarMouseDown);
             color.active.bind(expandableColorChanged);
-          } else show.call($this);
+          } else show.call(that);
         }
+        /**
+        *
+        * @returns {undefined}
+        */
+
 
         function destroy() {
           container.find('td.Radio input').unbind('click', radioClicked);
@@ -26457,7 +27355,7 @@
           if (settings.window.expandable) {
             iconImage.unbind('click', iconImageClicked);
             moveBar.unbind('mousedown', moveBarMouseDown);
-            $this.icon = null;
+            that.icon = null;
           }
 
           container.find('.QuickColor').unbind('click', quickPickClicked);
@@ -26489,7 +27387,7 @@
           container.html('');
 
           for (var i = 0; i < List.length; i++) {
-            if (List[i] === $this) {
+            if (List[i] === that) {
               List.splice(i, 1);
             }
           }
@@ -26511,6 +27409,19 @@
           }),
           quickList: settings.color.quickList
         };
+
+        if (typeof commitCallback !== 'function') {
+          commitCallback = null;
+        }
+
+        if (typeof liveCallback !== 'function') {
+          liveCallback = null;
+        }
+
+        if (typeof cancelCallback !== 'function') {
+          cancelCallback = null;
+        }
+
         var elementStartX = null,
             // Used to record the starting css positions for dragging the control
         elementStartY = null,
@@ -26547,12 +27458,9 @@
             // iconAlpha for popup icon
         iconImage = null,
             // iconImage popup icon
-        moveBar = null,
-            // drag bar
-        commitCallback = typeof $arguments[1] === 'function' ? $arguments[1] : null,
-            liveCallback = typeof $arguments[2] === 'function' ? $arguments[2] : null,
-            cancelCallback = typeof $arguments[3] === 'function' ? $arguments[3] : null;
-        $.extend(true, $this, {
+        moveBar = null; // drag bar
+
+        $.extend(true, that, {
           // public properties, methods, and callbacks
           commitCallback: commitCallback,
           // commitCallback function can be overridden to return the selected color to a method you specify when the user clicks "OK"
@@ -26566,9 +27474,9 @@
           destroy: destroy // destroys this control entirely, removing all events and objects, and removing itself from the List
 
         });
-        List.push($this);
+        List.push(that);
         setTimeout(function () {
-          initialize.call($this);
+          initialize.call(that);
         }, 0);
       });
     };
@@ -26613,6 +27521,9 @@
     * @property {Float} window.alphaPrecision Set decimal precision for alpha percentage display - hex codes do
     * not map directly to percentage integers - range 0-2
     * @property {boolean} window.updateInputColor Set to `false` to prevent binded input colors from changing
+    * @property {boolean} [window.bindToInput] Added by `$.fn.jPicker`
+    * @property {boolean} [window.expandable] Added by `$.fn.jPicker`
+    * @property {external:jQuery} [window.input] Added by `$.fn.jPicker`
     * @property {PlainObject} color
     * @property {"h"|"s"|"v"|"r"|"g"|"b"|"a"} color.mode Symbols stand for "h" (hue), "s" (saturation), "v" (value), "r" (red), "g" (green), "b" (blue), "a" (alpha)
     * @property {Color|string} color.active Strings are HEX values (e.g. #ffc000) WITH OR WITHOUT the "#" prefix
@@ -27069,7 +27980,7 @@
           val = _ref2[1];
 
       if (!val) {
-        console.log(sel);
+        console.log(sel); // eslint-disable-line no-console
       }
 
       if (ids) {
@@ -27088,6 +27999,8 @@
                 node.textContent = val;
                 return true;
               }
+
+              return false;
             });
 
             break;
@@ -27097,7 +28010,7 @@
             break;
         }
       } else {
-        console.log('Missing: ' + sel);
+        console.log('Missing element for localization: ' + sel); // eslint-disable-line no-console
       }
     });
   };
@@ -27170,7 +28083,7 @@
                 break;
               }
 
-              return _context.abrupt("return");
+              return _context.abrupt("return", undefined);
 
             case 6:
               _langData = langData, tools = _langData.tools, properties = _langData.properties, config = _langData.config, layers = _langData.layers, common = _langData.common, ui = _langData.ui;
@@ -27258,7 +28171,7 @@
                 image_width: properties.image_width,
                 layer_delete: layers.del,
                 layer_down: layers.move_down,
-                layer_new: layers['new'],
+                layer_new: layers.new,
                 layer_rename: layers.rename,
                 layer_moreopts: common.more_opts,
                 layer_up: layers.move_up,
@@ -27392,7 +28305,8 @@
                   }
                 }
 
-                console.log('Lang: ' + langParam); // Set to English if language is not in list of good langs
+                console.log('Lang: ' + langParam); // eslint-disable-line no-console
+                // Set to English if language is not in list of good langs
 
                 if (!goodLangs.includes(langParam) && langParam !== 'test') {
                   langParam = 'en';
@@ -27560,8 +28474,8 @@
   */
 
   var editor = {};
-  var $$b = [jqPluginJSHotkeys, jqPluginBBQ, jqPluginSVGIcons, jqPluginJGraduate, jqPluginSpinBtn, jqPluginSVG, jQueryContextMenu, jPicker].reduce(function ($, cb) {
-    return cb($);
+  var $$b = [jQueryPluginJSHotkeys, jQueryPluginBBQ, jQueryPluginSVGIcons, jQueryPluginJGraduate, jQueryPluginSpinButton, jQueryPluginSVG, jQueryContextMenu, jPicker].reduce(function (jq, func) {
+    return func(jq);
   }, jQuery);
   /*
   if (!$.loadingStylesheets) {
@@ -27849,107 +28763,136 @@
     */
     allowedOrigins: []
   };
+  /**
+   *
+   * @param {string} str SVG string
+   * @param {PlainObject} [opts={}]
+   * @param {boolean} [opts.noAlert]
+   * @throws {Error} Upon failure to load SVG
+   * @returns {Promise} Resolves to undefined upon success (or if `noAlert` is
+   *   falsey, though only until after the `alert` is closed); rejects if SVG
+   *   loading fails and `noAlert` is truthy.
+   */
 
-  function loadSvgString(str, callback) {
-    var success = svgCanvas.setSvgString(str) !== false;
-    callback = callback || $$b.noop;
-
-    if (success) {
-      callback(true); // eslint-disable-line standard/no-callback-literal
-    } else {
-      $$b.alert(uiStrings$1.notification.errorLoadingSVG, function () {
-        callback(false); // eslint-disable-line standard/no-callback-literal
-      });
-    }
+  function loadSvgString(_x) {
+    return _loadSvgString.apply(this, arguments);
   }
   /**
    * @function module:SVGEditor~getImportLocale
-   * @param {string} defaultLang
-   * @param {string} defaultName
+   * @param {PlainObject} defaults
+   * @param {string} defaults.defaultLang
+   * @param {string} defaults.defaultName
    * @returns {module:SVGEditor~ImportLocale}
    */
 
 
+  function _loadSvgString() {
+    _loadSvgString = _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee23(str) {
+      var _ref45,
+          noAlert,
+          success,
+          _args23 = arguments;
+
+      return regeneratorRuntime.wrap(function _callee23$(_context23) {
+        while (1) {
+          switch (_context23.prev = _context23.next) {
+            case 0:
+              _ref45 = _args23.length > 1 && _args23[1] !== undefined ? _args23[1] : {}, noAlert = _ref45.noAlert;
+              success = svgCanvas.setSvgString(str) !== false;
+
+              if (!success) {
+                _context23.next = 4;
+                break;
+              }
+
+              return _context23.abrupt("return");
+
+            case 4:
+              if (noAlert) {
+                _context23.next = 8;
+                break;
+              }
+
+              _context23.next = 7;
+              return $$b.alert(uiStrings$1.notification.errorLoadingSVG);
+
+            case 7:
+              return _context23.abrupt("return");
+
+            case 8:
+              throw new Error('Error loading SVG');
+
+            case 9:
+            case "end":
+              return _context23.stop();
+          }
+        }
+      }, _callee23, this);
+    }));
+    return _loadSvgString.apply(this, arguments);
+  }
+
   function getImportLocale(_ref) {
     var defaultLang = _ref.defaultLang,
         defaultName = _ref.defaultName;
 
     /**
      * @function module:SVGEditor~ImportLocale
-     * @param {string} [name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
-     * @param {string} [lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
+     * @param {PlainObject} localeInfo
+     * @param {string} [localeInfo.name] Defaults to `defaultName` of {@link module:SVGEditor~getImportLocale}
+     * @param {string} [localeInfo.lang=defaultLang] Defaults to `defaultLang` of {@link module:SVGEditor~getImportLocale}
      * @returns {Promise} Resolves to {@link module:locale.LocaleStrings}
      */
     return (
       /*#__PURE__*/
       function () {
-        var _importLocale = _asyncToGenerator(
+        var _importLocaleDefaulting = _asyncToGenerator(
         /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee2() {
+        regeneratorRuntime.mark(function _callee() {
           var _ref2,
               _ref2$name,
               name,
               _ref2$lang,
               lang,
               importLocale,
-              _importLocale2,
-              _args2 = arguments;
+              _args = arguments;
 
-          return regeneratorRuntime.wrap(function _callee2$(_context2) {
+          return regeneratorRuntime.wrap(function _callee$(_context) {
             while (1) {
-              switch (_context2.prev = _context2.next) {
+              switch (_context.prev = _context.next) {
                 case 0:
-                  _importLocale2 = function _ref4() {
-                    _importLocale2 = _asyncToGenerator(
-                    /*#__PURE__*/
-                    regeneratorRuntime.mark(function _callee(lang) {
-                      var url;
-                      return regeneratorRuntime.wrap(function _callee$(_context) {
-                        while (1) {
-                          switch (_context.prev = _context.next) {
-                            case 0:
-                              url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(lang, ".js");
-                              return _context.abrupt("return", importSetGlobalDefault(url, {
-                                global: "svgEditorExtensionLocale_".concat(name, "_").concat(lang)
-                              }));
-
-                            case 2:
-                            case "end":
-                              return _context.stop();
-                          }
-                        }
-                      }, _callee, this);
-                    }));
-                    return _importLocale2.apply(this, arguments);
+                  importLocale = function _ref3(language) {
+                    var url = "".concat(curConfig.extPath, "ext-locale/").concat(name, "/").concat(language, ".js");
+                    return importSetGlobalDefault(url, {
+                      global: "svgEditorExtensionLocale_".concat(name, "_").concat(language)
+                    });
                   };
 
-                  importLocale = function _ref3(_x) {
-                    return _importLocale2.apply(this, arguments);
-                  };
-
-                  _ref2 = _args2.length > 0 && _args2[0] !== undefined ? _args2[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
-                  _context2.prev = 3;
-                  _context2.next = 6;
+                  _ref2 = _args.length > 0 && _args[0] !== undefined ? _args[0] : {}, _ref2$name = _ref2.name, name = _ref2$name === void 0 ? defaultName : _ref2$name, _ref2$lang = _ref2.lang, lang = _ref2$lang === void 0 ? defaultLang : _ref2$lang;
+                  _context.prev = 2;
+                  _context.next = 5;
                   return importLocale(lang);
 
-                case 6:
-                  return _context2.abrupt("return", _context2.sent);
+                case 5:
+                  return _context.abrupt("return", _context.sent);
 
-                case 9:
-                  _context2.prev = 9;
-                  _context2.t0 = _context2["catch"](3);
-                  return _context2.abrupt("return", importLocale('en'));
+                case 8:
+                  _context.prev = 8;
+                  _context.t0 = _context["catch"](2);
+                  return _context.abrupt("return", importLocale('en'));
 
-                case 12:
+                case 11:
                 case "end":
-                  return _context2.stop();
+                  return _context.stop();
               }
             }
-          }, _callee2, this, [[3, 9]]);
+          }, _callee, this, [[2, 8]]);
         }));
 
-        return function importLocale() {
-          return _importLocale.apply(this, arguments);
+        return function importLocaleDefaulting() {
+          return _importLocaleDefaulting.apply(this, arguments);
         };
       }()
     );
@@ -27962,7 +28905,7 @@
   * Store and retrieve preferences.
   * @param {string} key The preference name to be retrieved or set
   * @param {string} [val] The value. If the value supplied is missing or falsey, no change to the preference will be made.
-  * @returns {string} If val is missing or falsey, the value of the previously stored preference will be returned.
+  * @returns {string|undefined} If val is missing or falsey, the value of the previously stored preference will be returned.
   * @todo Can we change setting on the jQuery namespace (onto editor) to avoid conflicts?
   * @todo Review whether any remaining existing direct references to
   *  getting `curPrefs` can be changed to use `$.pref()` getting to ensure
@@ -27983,7 +28926,7 @@
 
       editor.curPrefs = curPrefs; // Update exported value
 
-      return;
+      return undefined;
     }
 
     return key in curPrefs ? curPrefs[key] : defaultPrefs[key];
@@ -28013,13 +28956,13 @@
   */
 
   editor.loadContentAndPrefs = function () {
-    if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)store=(?:prefsAndContent|prefsOnly)/))) {
+    if (!curConfig.forceStorage && (curConfig.noStorageOnLoad || !document.cookie.match(/(?:^|;\s*)svgeditstore=(?:prefsAndContent|prefsOnly)/))) {
       return;
     } // LOAD CONTENT
 
 
     if (editor.storage && ( // Cookies do not have enough available memory to hold large documents
-    curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)store=prefsAndContent/))) {
+    curConfig.forceStorage || !curConfig.noStorageOnLoad && document.cookie.match(/(?:^|;\s*)svgeditstorestore=prefsAndContent/))) {
       var name = 'svgedit-' + curConfig.canvasName;
       var cached = editor.storage.getItem(name);
 
@@ -28029,25 +28972,22 @@
     } // LOAD PREFS
 
 
-    for (var key in defaultPrefs) {
-      if (defaultPrefs.hasOwnProperty(key)) {
-        // It's our own config, so we don't need to iterate up the prototype chain
-        var storeKey = 'svg-edit-' + key;
+    Object.keys(defaultPrefs).forEach(function (key) {
+      var storeKey = 'svg-edit-' + key;
 
-        if (editor.storage) {
-          var val = editor.storage.getItem(storeKey);
+      if (editor.storage) {
+        var val = editor.storage.getItem(storeKey);
 
-          if (val) {
-            defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
-          }
-        } else if (window.widget) {
-          defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
-        } else {
-          var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
-          defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
+        if (val) {
+          defaultPrefs[key] = String(val); // Convert to string for FF (.value fails in Webkit)
         }
+      } else if (window.widget) {
+        defaultPrefs[key] = window.widget.preferenceForKey(storeKey);
+      } else {
+        var result = document.cookie.match(new RegExp('(?:^|;\\s*)' + regexEscape(encodeURIComponent(storeKey)) + '=([^;]+)'));
+        defaultPrefs[key] = result ? decodeURIComponent(result[1]) : '';
       }
-    }
+    });
   };
   /**
   * Allows setting of preferences or configuration (including extensions).
@@ -28073,6 +29013,13 @@
 
   editor.setConfig = function (opts, cfgCfg) {
     cfgCfg = cfgCfg || {};
+    /**
+     *
+     * @param {module:SVGEditor.Config|module:SVGEditor.Prefs} cfgObj
+     * @param {string} key
+     * @param {Any} val See {@link module:SVGEditor.Config} or {@link module:SVGEditor.Prefs}
+     * @returns {undefined}
+     */
 
     function extendOrAdd(cfgObj, key, val) {
       if (cfgObj[key] && _typeof(cfgObj[key]) === 'object') {
@@ -28083,10 +29030,10 @@
     }
 
     $$b.each(opts, function (key, val) {
-      if (opts.hasOwnProperty(key)) {
+      if ({}.hasOwnProperty.call(opts, key)) {
         // Only allow prefs defined in defaultPrefs
-        if (defaultPrefs.hasOwnProperty(key)) {
-          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curPrefs.hasOwnProperty(key))) {
+        if ({}.hasOwnProperty.call(defaultPrefs, key)) {
+          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curPrefs, key))) {
             return;
           }
 
@@ -28102,29 +29049,25 @@
 
           curConfig[key] = curConfig[key].concat(val); // We will handle any dupes later
           // Only allow other curConfig if defined in defaultConfig
-        } else if (defaultConfig.hasOwnProperty(key)) {
-          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || curConfig.hasOwnProperty(key))) {
+        } else if ({}.hasOwnProperty.call(defaultConfig, key)) {
+          if (cfgCfg.overwrite === false && (curConfig.preventAllURLConfig || {}.hasOwnProperty.call(curConfig, key))) {
             return;
           } // Potentially overwriting of previously set config
 
 
-          if (curConfig.hasOwnProperty(key)) {
+          if ({}.hasOwnProperty.call(curConfig, key)) {
             if (cfgCfg.overwrite === false) {
               return;
             }
 
             extendOrAdd(curConfig, key, val);
+          } else if (cfgCfg.allowInitialUserOverride === true) {
+            extendOrAdd(defaultConfig, key, val);
+          } else if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
+            curConfig[key] = {};
+            $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
           } else {
-            if (cfgCfg.allowInitialUserOverride === true) {
-              extendOrAdd(defaultConfig, key, val);
-            } else {
-              if (defaultConfig[key] && _typeof(defaultConfig[key]) === 'object') {
-                curConfig[key] = {};
-                $$b.extend(true, curConfig[key], val); // Merge properties recursively, e.g., on initFill, initStroke objects
-              } else {
-                curConfig[key] = val;
-              }
-            }
+            curConfig[key] = val;
           }
         }
       }
@@ -28272,6 +29215,10 @@
     $$b('#lang_select option').each(function () {
       goodLangs.push(this.value);
     });
+    /**
+     * Sets up current preferences based on defaults.
+     * @returns {undefined}
+     */
 
     function setupCurPrefs() {
       curPrefs = $$b.extend(true, {}, defaultPrefs, curPrefs); // Now safe to merge with priority for curPrefs in the event any are already set
@@ -28279,6 +29226,11 @@
 
       editor.curPrefs = curPrefs;
     }
+    /**
+     * Sets up current config based on defaults.
+     * @returns {undefined}
+     */
+
 
     function setupCurConfig() {
       curConfig = $$b.extend(true, {}, defaultConfig, curConfig); // Now safe to merge with priority for curConfig in the event any are already set
@@ -28383,7 +29335,9 @@
       var icon = typeof iconId === 'string' ? $$b.getSvgIcon(iconId, true) : iconId.clone();
 
       if (!icon) {
-        console.log('NOTE: Icon image missing: ' + iconId);
+        // Todo: Investigate why this still occurs in some cases
+        console.log('NOTE: Icon image missing: ' + iconId); // eslint-disable-line no-console
+
         return;
       }
 
@@ -28401,48 +29355,53 @@
     var extAndLocaleFunc =
     /*#__PURE__*/
     function () {
-      var _ref5 = _asyncToGenerator(
+      var _ref4 = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee4() {
-        var _ref6, langParam, langData;
+      regeneratorRuntime.mark(function _callee3() {
+        var _ref5, langParam, langData, _uiStrings$common, ok, cancel;
 
-        return regeneratorRuntime.wrap(function _callee4$(_context4) {
+        return regeneratorRuntime.wrap(function _callee3$(_context3) {
           while (1) {
-            switch (_context4.prev = _context4.next) {
+            switch (_context3.prev = _context3.next) {
               case 0:
-                _context4.next = 2;
+                _context3.next = 2;
                 return editor.putLocale(null, goodLangs, curConfig);
 
               case 2:
-                _ref6 = _context4.sent;
-                langParam = _ref6.langParam;
-                langData = _ref6.langData;
-                _context4.next = 7;
+                _ref5 = _context3.sent;
+                langParam = _ref5.langParam;
+                langData = _ref5.langData;
+                _context3.next = 7;
                 return setLang(langParam, langData);
 
               case 7:
-                _context4.prev = 7;
-                _context4.next = 10;
+                _uiStrings$common = uiStrings$1.common, ok = _uiStrings$common.ok, cancel = _uiStrings$common.cancel;
+                jQueryPluginDBox($$b, {
+                  ok: ok,
+                  cancel: cancel
+                });
+                _context3.prev = 9;
+                _context3.next = 12;
                 return Promise.all(curConfig.extensions.map(
                 /*#__PURE__*/
                 function () {
-                  var _ref7 = _asyncToGenerator(
+                  var _ref6 = _asyncToGenerator(
                   /*#__PURE__*/
-                  regeneratorRuntime.mark(function _callee3(extname) {
+                  regeneratorRuntime.mark(function _callee2(extname) {
                     var extName, url, imported, _imported$name, name, init$$1, importLocale;
 
-                    return regeneratorRuntime.wrap(function _callee3$(_context3) {
+                    return regeneratorRuntime.wrap(function _callee2$(_context2) {
                       while (1) {
-                        switch (_context3.prev = _context3.next) {
+                        switch (_context2.prev = _context2.next) {
                           case 0:
                             extName = extname.match(/^ext-(.+)\.js/);
 
                             if (extName) {
-                              _context3.next = 3;
+                              _context2.next = 3;
                               break;
                             }
 
-                            return _context3.abrupt("return");
+                            return _context2.abrupt("return", undefined);
 
                           case 3:
                             url = curConfig.extPath + extname; // Todo: Replace this with `return import(url);` when
@@ -28455,41 +29414,48 @@
                              * @property {module:svgcanvas.ExtensionInitCallback} [init]
                              */
 
-                            _context3.prev = 4;
-                            _context3.next = 7;
+                            _context2.prev = 4;
+                            _context2.next = 7;
                             return importSetGlobalDefault(url, {
                               global: 'svgEditorExtension_' + extName[1].replace(/-/g, '_')
                             });
 
                           case 7:
-                            imported = _context3.sent;
+                            imported = _context2.sent;
                             _imported$name = imported.name, name = _imported$name === void 0 ? extName[1] : _imported$name, init$$1 = imported.init;
                             importLocale = getImportLocale({
                               defaultLang: langParam,
                               defaultName: name
                             });
-                            return _context3.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), importLocale));
+                            return _context2.abrupt("return", editor.addExtension(name, init$$1 && init$$1.bind(editor), {
+                              $: $$b,
+                              importLocale: importLocale
+                            }));
 
                           case 13:
-                            _context3.prev = 13;
-                            _context3.t0 = _context3["catch"](4);
-                            console.log(_context3.t0);
-                            console.error('Extension failed to load: ' + extname + '; ' + _context3.t0);
+                            _context2.prev = 13;
+                            _context2.t0 = _context2["catch"](4);
+                            // Todo: Add config to alert any errors
+                            console.log(_context2.t0); // eslint-disable-line no-console
 
-                          case 17:
+                            console.error('Extension failed to load: ' + extname + '; ' + _context2.t0); // eslint-disable-line no-console
+
+                            return _context2.abrupt("return", undefined);
+
+                          case 18:
                           case "end":
-                            return _context3.stop();
+                            return _context2.stop();
                         }
                       }
-                    }, _callee3, this, [[4, 13]]);
+                    }, _callee2, this, [[4, 13]]);
                   }));
 
                   return function (_x2) {
-                    return _ref7.apply(this, arguments);
+                    return _ref6.apply(this, arguments);
                   };
                 }()));
 
-              case 10:
+              case 12:
                 svgCanvas.bind('extensions_added',
                 /**
                 * @param {external:Window} win
@@ -28519,30 +29485,35 @@
                   });
                 });
                 svgCanvas.call('extensions_added');
-                _context4.next = 17;
+                _context3.next = 19;
                 break;
 
-              case 14:
-                _context4.prev = 14;
-                _context4.t0 = _context4["catch"](7);
-                console.log(_context4.t0);
+              case 16:
+                _context3.prev = 16;
+                _context3.t0 = _context3["catch"](9);
+                // Todo: Report errors through the UI
+                console.log(_context3.t0); // eslint-disable-line no-console
 
-              case 17:
+              case 19:
               case "end":
-                return _context4.stop();
+                return _context3.stop();
             }
           }
-        }, _callee4, this, [[7, 14]]);
+        }, _callee3, this, [[9, 16]]);
       }));
 
       return function extAndLocaleFunc() {
-        return _ref5.apply(this, arguments);
+        return _ref4.apply(this, arguments);
       };
     }();
 
     var stateObj = {
       tool_scale: editor.tool_scale
     };
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var setFlyoutPositions = function setFlyoutPositions() {
       $$b('.tools_flyout').each(function () {
@@ -28559,6 +29530,10 @@
         });
       });
     };
+    /**
+    * @type {string}
+    */
+
 
     var uaPrefix = function () {
       var regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
@@ -28583,6 +29558,12 @@
 
       return '';
     }();
+    /**
+    * @param {external:jQuery} elems
+    * @param {Float} scale
+    * @returns {undefined}
+    */
+
 
     var scaleElements = function scaleElements(elems, scale) {
       // const prefix = '-' + uaPrefix.toLowerCase() + '-'; // Currently unused
@@ -28598,8 +29579,8 @@
           var s = sides[i];
           var cur = el.data('orig_margin-' + s);
 
-          if (cur == null) {
-            cur = parseInt(el.css('margin-' + s), 10); // Cache the original margin
+          if (isNullish(cur)) {
+            cur = parseInt(el.css('margin-' + s)); // Cache the original margin
 
             el.data('orig_margin-' + s, cur);
           }
@@ -28995,95 +29976,122 @@
         '.stroke_tool div div .svg_icon': 20,
         '#tools_bottom label .svg_icon': 18
       },
-      callback: function callback(icons) {
-        $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
-          $$b(this).parent().prepend(this);
-        });
-        var tleft = $$b('#tools_left');
-        var minHeight;
+      callback: function () {
+        var _callback = _asyncToGenerator(
+        /*#__PURE__*/
+        regeneratorRuntime.mark(function _callee4(icons) {
+          var tleft, minHeight, size, getStylesheetPriority, stylesheets, idx, _stylesheets;
 
-        if (tleft.length) {
-          minHeight = tleft.offset().top + tleft.outerHeight();
-        }
+          return regeneratorRuntime.wrap(function _callee4$(_context4) {
+            while (1) {
+              switch (_context4.prev = _context4.next) {
+                case 0:
+                  getStylesheetPriority = function _ref8(stylesheetFile) {
+                    switch (stylesheetFile) {
+                      case 'jgraduate/css/jPicker.css':
+                        return 1;
 
-        var size = $$b.pref('iconsize');
-        editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+                      case 'jgraduate/css/jGraduate.css':
+                        return 2;
 
-        $$b('.tools_flyout').each(function () {
-          var shower = $$b('#' + this.id + '_show');
-          var sel = shower.attr('data-curopt'); // Check if there's an icon here
+                      case 'svg-editor.css':
+                        return 3;
 
-          if (!shower.children('svg, img').length) {
-            var clone = $$b(sel).children().clone();
+                      case 'spinbtn/jQuery.SpinButton.css':
+                        return 4;
 
-            if (clone.length) {
-              clone[0].removeAttribute('style'); // Needed for Opera
+                      default:
+                        return Infinity;
+                    }
+                  };
 
-              shower.append(clone);
+                  $$b('.toolbar_button button > svg, .toolbar_button button > img').each(function () {
+                    $$b(this).parent().prepend(this);
+                  });
+                  tleft = $$b('#tools_left');
+
+                  if (tleft.length) {
+                    minHeight = tleft.offset().top + tleft.outerHeight();
+                  }
+
+                  size = $$b.pref('iconsize');
+                  editor.setIconSize(size || ($$b(window).height() < minHeight ? 's' : 'm')); // Look for any missing flyout icons from plugins
+
+                  $$b('.tools_flyout').each(function () {
+                    var shower = $$b('#' + this.id + '_show');
+                    var sel = shower.attr('data-curopt'); // Check if there's an icon here
+
+                    if (!shower.children('svg, img').length) {
+                      var clone = $$b(sel).children().clone();
+
+                      if (clone.length) {
+                        clone[0].removeAttribute('style'); // Needed for Opera
+
+                        shower.append(clone);
+                      }
+                    }
+                  });
+                  /**
+                   * Since stylesheets may be added out of order, we indicate the desired order
+                   *   for defaults and others after them (in an indeterminate order).
+                   * @param {string} stylesheetFile
+                   * @returns {Integer|PositiveInfinity}
+                   */
+
+                  stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
+                    var priorityA = getStylesheetPriority(a);
+                    var priorityB = getStylesheetPriority(b);
+
+                    if (priorityA === priorityB) {
+                      return 0;
+                    }
+
+                    return priorityA > priorityB;
+                  });
+
+                  if (curConfig.stylesheets.length) {
+                    // Ensure a copy with unique items
+                    stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
+                    idx = stylesheets.indexOf('@default');
+
+                    if (idx > -1) {
+                      (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
+                    }
+                  }
+
+                  _context4.next = 11;
+                  return loadStylesheets(stylesheets, {
+                    acceptErrors: function acceptErrors(_ref7) {
+                      var stylesheetURL = _ref7.stylesheetURL,
+                          reject = _ref7.reject,
+                          resolve = _ref7.resolve;
+
+                      if ($$b.loadingStylesheets.includes(stylesheetURL)) {
+                        reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
+                        return;
+                      }
+
+                      resolve();
+                    }
+                  });
+
+                case 11:
+                  $$b('#svg_container')[0].style.visibility = 'visible';
+                  _context4.next = 14;
+                  return editor.runCallbacks();
+
+                case 14:
+                case "end":
+                  return _context4.stop();
+              }
             }
-          }
-        });
+          }, _callee4, this);
+        }));
 
-        function getStylesheetPriority(stylesheet) {
-          switch (stylesheet) {
-            case 'jgraduate/css/jPicker.css':
-              return 1;
-
-            case 'jgraduate/css/jGraduate.css':
-              return 2;
-
-            case 'svg-editor.css':
-              return 3;
-
-            case 'spinbtn/jQuery.SpinButton.css':
-              return 4;
-
-            default:
-              return Infinity;
-          }
-        }
-
-        var stylesheets = $$b.loadingStylesheets.sort(function (a, b) {
-          var priorityA = getStylesheetPriority(a);
-          var priorityB = getStylesheetPriority(b);
-
-          if (priorityA === priorityB) {
-            return 0;
-          }
-
-          return priorityA > priorityB;
-        });
-
-        if (curConfig.stylesheets.length) {
-          // Ensure a copy with unique items
-          stylesheets = _toConsumableArray(new Set(curConfig.stylesheets));
-          var idx = stylesheets.indexOf('@default');
-
-          if (idx > -1) {
-            var _stylesheets;
-
-            (_stylesheets = stylesheets).splice.apply(_stylesheets, [idx, 1].concat(_toConsumableArray($$b.loadingStylesheets)));
-          }
-        }
-
-        loadStylesheets(stylesheets, {
-          acceptErrors: function acceptErrors(_ref8) {
-            var stylesheetURL = _ref8.stylesheetURL,
-                reject = _ref8.reject,
-                resolve = _ref8.resolve;
-
-            if ($$b.loadingStylesheets.includes(stylesheetURL)) {
-              reject(new Error("Missing expected stylesheet: ".concat(stylesheetURL)));
-              return;
-            }
-
-            resolve();
-          }
-        }).then(function () {
-          $$b('#svg_container')[0].style.visibility = 'visible';
-          editor.runCallbacks();
-        });
-      }
+        return function callback(_x3) {
+          return _callback.apply(this, arguments);
+        };
+      }()
     });
     /**
     * @name module:SVGEditor.canvas
@@ -29136,125 +30144,12 @@
           w.document.documentElement.dispatchEvent(svgEditorReadyEvent);
         } catch (e) {}
       }
-    })(); // This sets up alternative dialog boxes. They mostly work the same way as
-    // their UI counterparts, expect instead of returning the result, a callback
-    // needs to be included that returns the result as its first parameter.
-    // In the future we may want to add additional types of dialog boxes, since
-    // they should be easy to handle this way.
-
-
-    (function () {
-      $$b('#dialog_container').draggable({
-        cancel: '#dialog_content, #dialog_buttons *',
-        containment: 'window'
-      }).css('position', 'absolute');
-
-      var box = $$b('#dialog_box'),
-          btnHolder = $$b('#dialog_buttons'),
-          dialogContent = $$b('#dialog_content'),
-          dbox = function dbox(type, msg, callback, defaultVal, opts, changeCb, checkbox) {
-        dialogContent.html('<p>' + msg.replace(/\n/g, '</p><p>') + '</p>').toggleClass('prompt', type === 'prompt');
-        btnHolder.empty();
-        var ok = $$b('<input type="button" value="' + uiStrings$1.common.ok + '">').appendTo(btnHolder);
-
-        if (type !== 'alert') {
-          $$b('<input type="button" value="' + uiStrings$1.common.cancel + '">').appendTo(btnHolder).click(function () {
-            box.hide();
-
-            if (callback) {
-              callback(false); // eslint-disable-line standard/no-callback-literal
-            }
-          });
-        }
-
-        var ctrl, chkbx;
-
-        if (type === 'prompt') {
-          ctrl = $$b('<input type="text">').prependTo(btnHolder);
-          ctrl.val(defaultVal || '');
-          ctrl.bind('keydown', 'return', function () {
-            ok.click();
-          });
-        } else if (type === 'select') {
-          var div = $$b('<div style="text-align:center;">');
-          ctrl = $$b('<select>').appendTo(div);
-
-          if (checkbox) {
-            var label = $$b('<label>').text(checkbox.label);
-            chkbx = $$b('<input type="checkbox">').appendTo(label);
-            chkbx.val(checkbox.value);
-
-            if (checkbox.tooltip) {
-              label.attr('title', checkbox.tooltip);
-            }
-
-            chkbx.prop('checked', !!checkbox.checked);
-            div.append($$b('<div>').append(label));
-          }
-
-          $$b.each(opts || [], function (opt, val) {
-            if (_typeof(val) === 'object') {
-              ctrl.append($$b('<option>').val(val.value).html(val.text));
-            } else {
-              ctrl.append($$b('<option>').html(val));
-            }
-          });
-          dialogContent.append(div);
-
-          if (defaultVal) {
-            ctrl.val(defaultVal);
-          }
-
-          if (changeCb) {
-            ctrl.bind('change', 'return', changeCb);
-          }
-
-          ctrl.bind('keydown', 'return', function () {
-            ok.click();
-          });
-        } else if (type === 'process') {
-          ok.hide();
-        }
-
-        box.show();
-        ok.click(function () {
-          box.hide();
-          var resp = type === 'prompt' || type === 'select' ? ctrl.val() : true;
-
-          if (callback) {
-            if (chkbx) {
-              callback(resp, chkbx.prop('checked'));
-            } else {
-              callback(resp);
-            }
-          }
-        }).focus();
-
-        if (type === 'prompt' || type === 'select') {
-          ctrl.focus();
-        }
-      };
-
-      $$b.alert = function (msg, cb) {
-        dbox('alert', msg, cb);
-      };
-
-      $$b.confirm = function (msg, cb) {
-        dbox('confirm', msg, cb);
-      };
-
-      $$b.process_cancel = function (msg, cb) {
-        dbox('process', msg, cb);
-      };
-
-      $$b.prompt = function (msg, txt, cb) {
-        dbox('prompt', msg, cb, txt);
-      };
-
-      $$b.select = function (msg, opts, cb, changeCb, txt, checkbox) {
-        dbox('select', msg, cb, txt, opts, changeCb, checkbox);
-      };
     })();
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var setSelectMode = function setSelectMode() {
       var curr = $$b('.tool_button_current');
@@ -29280,8 +30175,13 @@
       rIntervals.push(i);
       rIntervals.push(2 * i);
       rIntervals.push(5 * i);
-    } // This function highlights the layer passed in (by fading out the other layers)
-    // if no layer is passed in, this function restores the other layers
+    }
+    /**
+     * This function highlights the layer passed in (by fading out the other layers).
+     * If no layer is passed in, this function restores the other layers
+     * @param {string} [layerNameToHighlight]
+     * @returns {undefined}
+    */
 
 
     var toggleHighlightLayer = function toggleHighlightLayer(layerNameToHighlight) {
@@ -29294,17 +30194,22 @@
       }
 
       if (layerNameToHighlight) {
-        for (i = 0; i < numLayers; ++i) {
-          if (curNames[i] !== layerNameToHighlight) {
-            svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 0.5);
+        curNames.forEach(function (curName) {
+          if (curName !== layerNameToHighlight) {
+            svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 0.5);
           }
-        }
+        });
       } else {
-        for (i = 0; i < numLayers; ++i) {
-          svgCanvas.getCurrentDrawing().setLayerOpacity(curNames[i], 1.0);
-        }
+        curNames.forEach(function (curName) {
+          svgCanvas.getCurrentDrawing().setLayerOpacity(curName, 1.0);
+        });
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var populateLayers = function populateLayers() {
       svgCanvas.clearSelection();
@@ -29361,6 +30266,11 @@
 
     var editingsource = false;
     var origSource = '';
+    /**
+    * @param {Event} [e] Not used.
+    * @param {boolean} forSaving
+    * @returns {undefined}
+    */
 
     var showSourceEditor = function showSourceEditor(e, forSaving) {
       if (editingsource) {
@@ -29369,7 +30279,7 @@
 
       editingsource = true;
       origSource = svgCanvas.getSvgString();
-      $$b('#save_output_btns').toggle(!!forSaving);
+      $$b('#save_output_btns').toggle(Boolean(forSaving));
       $$b('#tool_source_back').toggle(!forSaving);
       $$b('#svg_source_textarea').val(origSource);
       $$b('#svg_source_editor').fadeIn();
@@ -29378,6 +30288,11 @@
 
     var selectedElement = null;
     var multiselected = false;
+    /**
+    * @param {boolean} editmode
+    * @param {module:svgcanvas.SvgCanvas#event:selected} elems
+    * @returns {undefined}
+    */
 
     var togglePathEditMode = function togglePathEditMode(editmode, elems) {
       $$b('#path_node_panel').toggle(editmode);
@@ -29450,7 +30365,7 @@
         }
 
         if (done !== 'part') {
-          alert(note);
+          $$b.alert(note);
         }
       }
     };
@@ -29468,6 +30383,7 @@
       exportWindow = window.open(blankPageObjectURL || '', exportWindowName); // A hack to get the window via JSON-able name without opening a new one
 
       if (!exportWindow || exportWindow.closed) {
+        /* await */
         $$b.alert(uiStrings$1.notification.popupWindowBlocked);
         return;
       }
@@ -29489,6 +30405,11 @@
         exportWindow.alert(note);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var operaRepaint = function operaRepaint() {
       // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
@@ -29498,12 +30419,21 @@
 
       $$b('<p/>').hide().appendTo('body').remove();
     };
+    /**
+     *
+     * @param {Element} opt
+     * @param {boolean} changeElem
+     * @returns {undefined}
+     */
+
 
     function setStrokeOpt(opt, changeElem) {
       var id = opt.id;
       var bits = id.split('_');
-      var pre = bits[0];
-      var val = bits[1];
+
+      var _bits = _slicedToArray(bits, 2),
+          pre = _bits[0],
+          val = _bits[1];
 
       if (changeElem) {
         svgCanvas.setStrokeAttr('stroke-' + pre, val);
@@ -29592,6 +30522,13 @@
         $$b('#change_image_url').hide();
       }
     };
+    /**
+     *
+     * @param {string} color
+     * @param {string} url
+     * @returns {undefined}
+     */
+
 
     function setBackground(color, url) {
       // if (color == $.pref('bkgd_color') && url == $.pref('bkgd_url')) { return; }
@@ -29600,27 +30537,73 @@
 
       svgCanvas.setBackground(color, url);
     }
+    /**
+     * @param {PlainObject} [opts={}]
+     * @param {boolean} [opts.cancelDeletes=false}]
+     * @returns {Promise} Resolves to `undefined`
+     */
+
 
     function promptImgURL() {
-      var _ref9 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
-          _ref9$cancelDeletes = _ref9.cancelDeletes,
-          cancelDeletes = _ref9$cancelDeletes === void 0 ? false : _ref9$cancelDeletes;
+      return _promptImgURL.apply(this, arguments);
+    }
+    /**
+    * @param {Element} elem
+    * @returns {undefined}
+    */
 
-      var curhref = svgCanvas.getHref(selectedElement);
-      curhref = curhref.startsWith('data:') ? '' : curhref;
-      $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref, function (url) {
-        if (url) {
-          setImageURL(url);
-        } else if (cancelDeletes) {
-          svgCanvas.deleteSelectedElements();
-        }
-      });
+
+    function _promptImgURL() {
+      _promptImgURL = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee18() {
+        var _ref31,
+            _ref31$cancelDeletes,
+            cancelDeletes,
+            curhref,
+            url,
+            _args18 = arguments;
+
+        return regeneratorRuntime.wrap(function _callee18$(_context18) {
+          while (1) {
+            switch (_context18.prev = _context18.next) {
+              case 0:
+                _ref31 = _args18.length > 0 && _args18[0] !== undefined ? _args18[0] : {}, _ref31$cancelDeletes = _ref31.cancelDeletes, cancelDeletes = _ref31$cancelDeletes === void 0 ? false : _ref31$cancelDeletes;
+                curhref = svgCanvas.getHref(selectedElement);
+                curhref = curhref.startsWith('data:') ? '' : curhref;
+                _context18.next = 5;
+                return $$b.prompt(uiStrings$1.notification.enterNewImgURL, curhref);
+
+              case 5:
+                url = _context18.sent;
+
+                if (url) {
+                  setImageURL(url);
+                } else if (cancelDeletes) {
+                  svgCanvas.deleteSelectedElements();
+                }
+
+              case 7:
+              case "end":
+                return _context18.stop();
+            }
+          }
+        }, _callee18, this);
+      }));
+      return _promptImgURL.apply(this, arguments);
     }
 
     var setInputWidth = function setInputWidth(elem) {
       var w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
       $$b(elem).width(w);
     };
+    /**
+     *
+     * @param {HTMLDivElement} [scanvas]
+     * @param {Float} [zoom]
+     * @returns {undefined}
+     */
+
 
     function updateRulers(scanvas, zoom) {
       if (!zoom) {
@@ -29662,7 +30645,7 @@
         $hcanv.siblings().remove(); // Create multiple canvases when necessary (due to browser limits)
 
         if (rulerLen >= limit) {
-          ctxArrNum = parseInt(rulerLen / limit, 10) + 1;
+          ctxArrNum = parseInt(rulerLen / limit) + 1;
           ctxArr = [];
           ctxArr[0] = ctx;
           var copy = void 0;
@@ -29816,8 +30799,9 @@
       var newCanX = w / 2;
       var offset = svgCanvas.updateCanvas(w, h);
       var ratio = newCanX / oldCanX;
-      var scrollX = w / 2 - wOrig / 2;
-      var scrollY = h / 2 - hOrig / 2;
+      var scrollX = w / 2 - wOrig / 2; // eslint-disable-line no-shadow
+
+      var scrollY = h / 2 - hOrig / 2; // eslint-disable-line no-shadow
 
       if (!newCtr) {
         var oldDistX = oldCtr.x - oldCanX;
@@ -29865,44 +30849,37 @@
 
 
     var updateToolButtonState = function updateToolButtonState() {
-      var index, button;
       var bNoFill = svgCanvas.getColor('fill') === 'none';
       var bNoStroke = svgCanvas.getColor('stroke') === 'none';
       var buttonsNeedingStroke = ['#tool_fhpath', '#tool_line'];
       var buttonsNeedingFillAndStroke = ['#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];
 
       if (bNoStroke) {
-        for (index in buttonsNeedingStroke) {
-          button = buttonsNeedingStroke[index];
-
-          if ($$b(button).hasClass('tool_button_current')) {
+        buttonsNeedingStroke.forEach(function (btn) {
+          if ($$b(btn).hasClass('tool_button_current')) {
             clickSelect();
           }
 
-          $$b(button).addClass('disabled');
-        }
+          $$b(btn).addClass('disabled');
+        });
       } else {
-        for (index in buttonsNeedingStroke) {
-          button = buttonsNeedingStroke[index];
-          $$b(button).removeClass('disabled');
-        }
+        buttonsNeedingStroke.forEach(function (btn) {
+          $$b(btn).removeClass('disabled');
+        });
       }
 
       if (bNoStroke && bNoFill) {
-        for (index in buttonsNeedingFillAndStroke) {
-          button = buttonsNeedingFillAndStroke[index];
-
-          if ($$b(button).hasClass('tool_button_current')) {
+        buttonsNeedingFillAndStroke.forEach(function (btn) {
+          if ($$b(btn).hasClass('tool_button_current')) {
             clickSelect();
           }
 
-          $$b(button).addClass('disabled');
-        }
+          $$b(btn).addClass('disabled');
+        });
       } else {
-        for (index in buttonsNeedingFillAndStroke) {
-          button = buttonsNeedingFillAndStroke[index];
-          $$b(button).removeClass('disabled');
-        }
+        buttonsNeedingFillAndStroke.forEach(function (btn) {
+          $$b(btn).removeClass('disabled');
+        });
       }
 
       svgCanvas.runExtensions('toolButtonStateUpdate',
@@ -29923,14 +30900,19 @@
         shower.toggleClass('disabled', !hasEnabled);
       });
       operaRepaint();
-    }; // Updates the toolbar (colors, opacity, etc) based on the selected element
-    // This function also updates the opacity and id elements that are in the context panel
+    };
+    /**
+    * Updates the toolbar (colors, opacity, etc) based on the selected element.
+    * This function also updates the opacity and id elements that are in the
+    * context panel.
+    * @returns {undefined}
+    */
 
 
     var updateToolbar = function updateToolbar() {
       var i, len;
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         switch (selectedElement.tagName) {
           case 'use':
           case 'image':
@@ -29939,47 +30921,50 @@
 
           case 'g':
           case 'a':
-            // Look for common styles
-            var childs = selectedElement.getElementsByTagName('*');
-            var gWidth = null;
+            {
+              // Look for common styles
+              var childs = selectedElement.getElementsByTagName('*');
+              var gWidth = null;
 
-            for (i = 0, len = childs.length; i < len; i++) {
-              var swidth = childs[i].getAttribute('stroke-width');
+              for (i = 0, len = childs.length; i < len; i++) {
+                var swidth = childs[i].getAttribute('stroke-width');
 
-              if (i === 0) {
-                gWidth = swidth;
-              } else if (gWidth !== swidth) {
-                gWidth = null;
+                if (i === 0) {
+                  gWidth = swidth;
+                } else if (gWidth !== swidth) {
+                  gWidth = null;
+                }
               }
-            }
 
-            $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
-            paintBox.fill.update(true);
-            paintBox.stroke.update(true);
-            break;
+              $$b('#stroke_width').val(gWidth === null ? '' : gWidth);
+              paintBox.fill.update(true);
+              paintBox.stroke.update(true);
+              break;
+            }
 
           default:
-            paintBox.fill.update(true);
-            paintBox.stroke.update(true);
-            $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
-            $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
-            var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
+            {
+              paintBox.fill.update(true);
+              paintBox.stroke.update(true);
+              $$b('#stroke_width').val(selectedElement.getAttribute('stroke-width') || 1);
+              $$b('#stroke_style').val(selectedElement.getAttribute('stroke-dasharray') || 'none');
+              var attr = selectedElement.getAttribute('stroke-linejoin') || 'miter';
 
-            if ($$b('#linejoin_' + attr).length) {
-              setStrokeOpt($$b('#linejoin_' + attr)[0]);
+              if ($$b('#linejoin_' + attr).length) {
+                setStrokeOpt($$b('#linejoin_' + attr)[0]);
+              }
+
+              attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
+
+              if ($$b('#linecap_' + attr).length) {
+                setStrokeOpt($$b('#linecap_' + attr)[0]);
+              }
             }
-
-            attr = selectedElement.getAttribute('stroke-linecap') || 'butt';
-
-            if ($$b('#linecap_' + attr).length) {
-              setStrokeOpt($$b('#linecap_' + attr)[0]);
-            }
-
         }
       } // All elements including image and group have opacity
 
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         var opacPerc = (selectedElement.getAttribute('opacity') || 1.0) * 100;
         $$b('#group_opacity').val(opacPerc);
         $$b('#opac_slider').slider('option', 'value', opacPerc);
@@ -29988,13 +30973,17 @@
       }
 
       updateToolButtonState();
-    }; // updates the context panel tools based on the selected element
+    };
+    /**
+    * Updates the context panel tools based on the selected element.
+    * @returns {undefined}
+    */
 
 
     var updateContextPanel = function updateContextPanel() {
       var elem = selectedElement; // If element has just been deleted, consider it null
 
-      if (elem != null && !elem.parentNode) {
+      if (!isNullish(elem) && !elem.parentNode) {
         elem = null;
       }
 
@@ -30006,7 +30995,7 @@
       var menuItems = $$b('#cmenu_canvas li');
       $$b('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,' + '#ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel,' + ' #use_panel, #a_panel').hide();
 
-      if (elem != null) {
+      if (!isNullish(elem)) {
         var elname = elem.nodeName; // If this is a link with no transform and one child, pretend
         // its child is selected
         // if (elname === 'a') { // && !$(elem).attr('transform')) {
@@ -30023,6 +31012,7 @@
           if (elname === 'image' && svgCanvas.getMode() === 'image') {
             // Prompt for URL if not a data URL
             if (!svgCanvas.getHref(elem).startsWith('data:')) {
+              /* await */
               promptImgURL({
                 cancelDeletes: true
               });
@@ -30189,7 +31179,7 @@
         }
 
         menuItems[(tagName === 'g' ? 'en' : 'dis') + 'ableContextMenuItems']('#ungroup');
-        menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (elem != null)
+        menuItems[(tagName === 'g' || !multiselected ? 'dis' : 'en') + 'ableContextMenuItems']('#group'); // if (!Utils.isNullish(elem))
       } else if (multiselected) {
         $$b('#multiselected_panel').show();
         menuItems.enableContextMenuItems('#group').disableContextMenuItems('#ungroup');
@@ -30211,6 +31201,11 @@
         $$b('#selLayerNames').attr('disabled', 'disabled');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var updateWireFrame = function updateWireFrame() {
       // Test support
@@ -30223,6 +31218,10 @@
     };
 
     var curContext = '';
+    /**
+    * @param {string} [title=svgCanvas.getDocumentTitle()]
+    * @returns {undefined}
+    */
 
     var updateTitle = function updateTitle(title) {
       title = title || svgCanvas.getDocumentTitle();
@@ -30253,17 +31252,17 @@
 
       var isNode = mode === 'pathedit'; // if elems[1] is present, then we have more than one element
 
-      selectedElement = elems.length === 1 || elems[1] == null ? elems[0] : null;
-      multiselected = elems.length >= 2 && elems[1] != null;
+      selectedElement = elems.length === 1 || isNullish(elems[1]) ? elems[0] : null;
+      multiselected = elems.length >= 2 && !isNullish(elems[1]);
 
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         // unless we're already in always set the mode of the editor to select because
         // upon creation of a text element the editor is switched into
         // select mode and this event fires - we need our UI to be in sync
         if (!isNode) {
           updateToolbar();
         }
-      } // if (elem != null)
+      } // if (!Utils.isNullish(elem))
       // Deal with pathedit mode
 
 
@@ -30296,19 +31295,21 @@
         return;
       }
 
-      multiselected = elems.length >= 2 && elems[1] != null; // Only updating fields for single elements for now
+      multiselected = elems.length >= 2 && !isNullish(elems[1]); // Only updating fields for single elements for now
 
       if (!multiselected) {
         switch (mode) {
           case 'rotate':
-            var ang = svgCanvas.getRotationAngle(elem);
-            $$b('#angle').val(ang);
-            $$b('#tool_reorient').toggleClass('disabled', ang === 0);
-            break;
-          // TODO: Update values that change on move/resize, etc
-          // case 'select':
-          // case 'resize':
-          //   break;
+            {
+              var ang = svgCanvas.getRotationAngle(elem);
+              $$b('#angle').val(ang);
+              $$b('#tool_reorient').toggleClass('disabled', ang === 0);
+              break; // TODO: Update values that change on move/resize, etc
+              // } case 'select': {
+              // } case 'resize': {
+              //   break;
+              // }
+            }
         }
       }
 
@@ -30357,7 +31358,7 @@
           } // Update selectedElement if element is no longer part of the image.
           // This occurs for the text elements in Firefox
 
-        } else if (elem && selectedElement && selectedElement.parentNode == null) {
+        } else if (elem && selectedElement && isNullish(selectedElement.parentNode)) {
           // || elem && elem.tagName == "path" && !multiselected) { // This was added in r1430, but not sure why
           selectedElement = elem;
         }
@@ -30451,6 +31452,10 @@
 
       zoomDone();
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeZoom = function changeZoom(ctl) {
       var zoomlevel = ctl.value / 100;
@@ -30513,9 +31518,13 @@
         curContext = null;
       }
 
-      $$b('#cur_context_panel').toggle(!!context).html(linkStr);
+      $$b('#cur_context_panel').toggle(Boolean(context)).html(linkStr);
       updateTitle();
-    }; // Makes sure the current selected paint is available to work with
+    };
+    /**
+    * Makes sure the current selected paint is available to work with.
+    * @returns {undefined}
+    */
 
 
     var prepPaints = function prepPaints() {
@@ -30524,6 +31533,10 @@
     };
 
     var flyoutFuncs = {};
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var setFlyoutTitles = function setFlyoutTitles() {
       $$b('.tools_flyout').each(function () {
@@ -30542,7 +31555,7 @@
 
     var allHolders = {};
     /**
-     * @param {GenericObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
+     * @param {PlainObject.<string, module:SVGEditor.ToolButton>} holders Key is a selector
      * @returns {undefined}
      */
 
@@ -30565,10 +31578,10 @@
           // Get this button's options
           var idSel = '#' + this.getAttribute('id');
 
-          var _Object$entries$find = Object.entries(btnOpts).find(function (_ref10) {
-            var _ref11 = _slicedToArray(_ref10, 2),
-                i = _ref11[0],
-                sel = _ref11[1].sel;
+          var _Object$entries$find = Object.entries(btnOpts).find(function (_ref9) {
+            var _ref10 = _slicedToArray(_ref9, 2),
+                _ = _ref10[0],
+                sel = _ref10[1].sel;
 
             return sel === idSel;
           }),
@@ -30595,22 +31608,22 @@
             if (ev.type === 'keydown') {
               var flyoutIsSelected = $$b(options.parent + '_show').hasClass('tool_button_current');
               var currentOperation = $$b(options.parent + '_show').attr('data-curopt');
-              Object.entries(holders[opts.parent]).some(function (_ref12) {
-                var _ref13 = _slicedToArray(_ref12, 2),
-                    i = _ref13[0],
-                    tool = _ref13[1];
+              Object.entries(holders[opts.parent]).some(function (_ref11) {
+                var _ref12 = _slicedToArray(_ref11, 2),
+                    j = _ref12[0],
+                    tool = _ref12[1];
 
                 if (tool.sel !== currentOperation) {
-                  return;
+                  return false;
                 }
 
                 if (!ev.shiftKey || !flyoutIsSelected) {
                   options = tool;
                 } else {
                   // If flyout is selected, allow shift key to iterate through subitems
-                  i = parseInt(i, 10); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
+                  j = parseInt(j); // Use `allHolders` to include both extension `includeWith` and toolbarButtons
 
-                  options = allHolders[opts.parent][i + 1] || holders[opts.parent][0];
+                  options = allHolders[opts.parent][j + 1] || holders[opts.parent][0];
                 }
 
                 return true;
@@ -30637,6 +31650,8 @@
             icon[0].setAttribute('height', shower.height());
             shower.children(':not(.flyout_arrow_horiz)').remove();
             shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode
+
+            return true;
           };
 
           $$b(this).mouseup(flyoutAction);
@@ -30644,6 +31659,8 @@
           if (opts.key) {
             $$b(document).bind('keydown', opts.key[0] + ' shift+' + opts.key[0], flyoutAction);
           }
+
+          return true;
         });
 
         if (def) {
@@ -30678,6 +31695,7 @@
             holder.data('shown_popop', true);
           }, time);
           evt.preventDefault();
+          return true;
         }).mouseup(function (evt) {
           clearTimeout(timer);
           var opt = $$b(this).attr('data-curopt'); // Is library and popped up, so do nothing
@@ -30695,6 +31713,12 @@
       setFlyoutTitles();
       setFlyoutPositions();
     };
+    /**
+    * @param {string} id
+    * @param {external:jQuery} child
+    * @returns {undefined}
+    */
+
 
     var makeFlyoutHolder = function makeFlyoutHolder(id, child) {
       var div = $$b('<div>', {
@@ -30702,16 +31726,27 @@
         id: id
       }).appendTo('#svg_editor').append(child);
       return div;
-    }; // TODO: Combine this with addDropDown or find other way to optimize
+    };
+    /**
+    * @param {string} elemSel
+    * @param {string} listSel
+    * @param {external:jQuery.Function} callback
+    * @param {PlainObject} opts
+    * @param {boolean} opts.dropUp
+    * @param {boolean} opts.seticon
+    * @param {boolean} opts.multiclick
+    * @todo Combine this with `addDropDown` or find other way to optimize.
+    * @returns {undefined}
+    */
 
 
-    var addAltDropDown = function addAltDropDown(elem, list, callback, opts) {
-      var button = $$b(elem);
+    var addAltDropDown = function addAltDropDown(elemSel, listSel, callback, opts) {
+      var button = $$b(elemSel);
       var dropUp = opts.dropUp;
-      list = $$b(list);
+      var list = $$b(listSel);
 
       if (dropUp) {
-        $$b(elem).addClass('dropup');
+        $$b(elemSel).addClass('dropup');
       }
 
       list.find('li').bind('mouseup', function () {
@@ -30720,7 +31755,11 @@
           $$b(this).addClass('current').siblings().removeClass('current');
         }
 
-        callback.apply(this, arguments);
+        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+          args[_key] = arguments[_key];
+        }
+
+        callback.apply.apply(callback, [this].concat(args));
       });
       var onButton = false;
       $$b(window).mouseup(function (evt) {
@@ -30779,13 +31818,13 @@
      * @param {external:Window} win
      * @param {module:svgcanvas.SvgCanvas#event:extension_added} ext
      * @listens module:svgcanvas.SvgCanvas#event:extension_added
-     * @returns {Promise} Resolves to `undefined`
+     * @returns {Promise|undefined} Resolves to `undefined`
      */
 
     var extAdded =
     /*#__PURE__*/
     function () {
-      var _ref14 = _asyncToGenerator(
+      var _ref13 = _asyncToGenerator(
       /*#__PURE__*/
       regeneratorRuntime.mark(function _callee5(win, ext) {
         var cbCalled, resizeDone, lang, prepResize, runCallback, btnSelects, svgicons, fallbackObj, placementObj, holders;
@@ -30793,7 +31832,7 @@
           while (1) {
             switch (_context5.prev = _context5.next) {
               case 0:
-                prepResize = function _ref15() {
+                prepResize = function _ref14() {
                   if (resizeTimer) {
                     clearTimeout(resizeTimer);
                     resizeTimer = null;
@@ -30812,7 +31851,7 @@
                   break;
                 }
 
-                return _context5.abrupt("return");
+                return _context5.abrupt("return", undefined);
 
               case 3:
                 cbCalled = false;
@@ -30849,6 +31888,10 @@
                 extsPreLang.push(ext);
 
               case 14:
+                /**
+                *
+                * @returns {undefined}
+                */
                 runCallback = function runCallback() {
                   if (ext.callback && !cbCalled) {
                     cbCalled = true;
@@ -30889,70 +31932,78 @@
 
                     switch (tool.type) {
                       case 'tool_button':
-                        html = '<div class="tool_button">' + tool.id + '</div>';
-                        var div = $$b(html).appendTo(panel);
+                        {
+                          html = '<div class="tool_button">' + tool.id + '</div>';
+                          var div = $$b(html).appendTo(panel);
 
-                        if (tool.events) {
-                          $$b.each(tool.events, function (evt, func) {
-                            $$b(div).bind(evt, func);
-                          });
+                          if (tool.events) {
+                            $$b.each(tool.events, function (evt, func) {
+                              $$b(div).bind(evt, func);
+                            });
+                          }
+
+                          break;
                         }
 
-                        break;
-
                       case 'select':
-                        html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
-                        $$b.each(tool.options, function (val, text) {
-                          var sel = val === tool.defval ? ' selected' : '';
-                          html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
-                        });
-                        html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
+                        {
+                          html = '<label' + contId + '>' + '<select id="' + tool.id + '">';
+                          $$b.each(tool.options, function (val, text) {
+                            var sel = val === tool.defval ? ' selected' : '';
+                            html += '<option value="' + val + '"' + sel + '>' + text + '</option>';
+                          });
+                          html += '</select></label>'; // Creates the tool, hides & adds it, returns the select element
 
-                        var sel = $$b(html).appendTo(panel).find('select');
-                        $$b.each(tool.events, function (evt, func) {
-                          $$b(sel).bind(evt, func);
-                        });
-                        break;
+                          var sel = $$b(html).appendTo(panel).find('select');
+                          $$b.each(tool.events, function (evt, func) {
+                            $$b(sel).bind(evt, func);
+                          });
+                          break;
+                        }
 
                       case 'button-select':
-                        html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
-                        var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
+                        {
+                          html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">' + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
+                          var list = $$b('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
 
-                        if (tool.colnum) {
-                          list.addClass('optcols' + tool.colnum);
-                        } // Creates the tool, hides & adds it, returns the select element
+                          if (tool.colnum) {
+                            list.addClass('optcols' + tool.colnum);
+                          } // Creates the tool, hides & adds it, returns the select element
 
-                        /* const dropdown = */
+                          /* const dropdown = */
 
 
-                        $$b(html).appendTo(panel).children();
-                        btnSelects.push({
-                          elem: '#' + tool.id,
-                          list: '#' + tool.id + '_opts',
-                          title: tool.title,
-                          callback: tool.events.change,
-                          cur: '#cur_' + tool.id
-                        });
-                        break;
+                          $$b(html).appendTo(panel).children();
+                          btnSelects.push({
+                            elem: '#' + tool.id,
+                            list: '#' + tool.id + '_opts',
+                            title: tool.title,
+                            callback: tool.events.change,
+                            cur: '#cur_' + tool.id
+                          });
+                          break;
+                        }
 
                       case 'input':
-                        html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
-                        // Add to given tool.panel
+                        {
+                          html = '<label' + contId + '>' + '<span id="' + tool.id + '_label">' + tool.label + ':</span>' + '<input id="' + tool.id + '" title="' + tool.title + '" size="' + (tool.size || '4') + '" value="' + (tool.defval || '') + '" type="text"/></label>'; // Creates the tool, hides & adds it, returns the select element
+                          // Add to given tool.panel
 
-                        var inp = $$b(html).appendTo(panel).find('input');
+                          var inp = $$b(html).appendTo(panel).find('input');
 
-                        if (tool.spindata) {
-                          inp.SpinButton(tool.spindata);
+                          if (tool.spindata) {
+                            inp.SpinButton(tool.spindata);
+                          }
+
+                          if (tool.events) {
+                            $$b.each(tool.events, function (evt, func) {
+                              inp.bind(evt, func);
+                            });
+                          }
+
+                          break;
                         }
 
-                        if (tool.events) {
-                          $$b.each(tool.events, function (evt, func) {
-                            inp.bind(evt, func);
-                          });
-                        }
-
-                        break;
-
                       default:
                         break;
                     }
@@ -31225,6 +32276,7 @@
                 }
 
                 return _context5.abrupt("return", new Promise(function (resolve, reject) {
+                  // eslint-disable-line promise/avoid-new
                   $$b.svgIcons(svgicons, {
                     w: 24,
                     h: 24,
@@ -31256,10 +32308,17 @@
         }, _callee5, this);
       }));
 
-      return function extAdded(_x3, _x4) {
-        return _ref14.apply(this, arguments);
+      return function extAdded(_x4, _x5) {
+        return _ref13.apply(this, arguments);
       };
     }();
+    /**
+    * @param {string} color
+    * @param {Float} opac
+    * @param {string} type
+    * @returns {module:jGraduate~Paint}
+    */
+
 
     var getPaint = function getPaint(color, opac, type) {
       // update the editor's fill paint
@@ -31307,6 +32366,7 @@
       }
 
       if (!exportWindow || exportWindow.closed) {
+        /* await */
         $$b.alert(uiStrings$1.notification.popupWindowBlocked);
         return;
       }
@@ -31318,14 +32378,15 @@
     svgCanvas.bind('updateCanvas',
     /**
      * @param {external:Window} win
-     * @param {false} center
-     * @param {module:math.XYObject} newCtr
+     * @param {PlainObject} centerInfo
+     * @param {false} centerInfo.center
+     * @param {module:math.XYObject} centerInfo.newCtr
      * @listens module:svgcanvas.SvgCanvas#event:updateCanvas
      * @returns {undefined}
      */
-    function (win, _ref16) {
-      var center = _ref16.center,
-          newCtr = _ref16.newCtr;
+    function (win, _ref15) {
+      var center = _ref15.center,
+          newCtr = _ref15.newCtr;
       updateCanvas(center, newCtr);
     });
     svgCanvas.bind('contextset', contextChanged);
@@ -31356,14 +32417,25 @@
     });
     setBackground($$b.pref('bkgd_color'), $$b.pref('bkgd_url'));
     $$b('#image_save_opts input').val([$$b.pref('img_save')]);
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
 
     var changeRectRadius = function changeRectRadius(ctl) {
       svgCanvas.setRectRadius(ctl.value);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeFontSize = function changeFontSize(ctl) {
       svgCanvas.setFontSize(ctl.value);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeStrokeWidth = function changeStrokeWidth(ctl) {
       var val = ctl.value;
@@ -31374,14 +32446,24 @@
 
       svgCanvas.setStrokeWidth(val);
     };
+    /**
+    * @implements {module:jQuerySpinButton.ValueCallback}
+    */
+
 
     var changeRotationAngle = function changeRotationAngle(ctl) {
       svgCanvas.setRotationAngle(ctl.value);
-      $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value, 10) === 0);
+      $$b('#tool_reorient').toggleClass('disabled', parseInt(ctl.value) === 0);
     };
+    /**
+    * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+    * @param {string} [val=ctl.value]
+    * @returns {undefined}
+    */
+
 
     var changeOpacity = function changeOpacity(ctl, val) {
-      if (val == null) {
+      if (isNullish(val)) {
         val = ctl.value;
       }
 
@@ -31393,9 +32475,16 @@
 
       svgCanvas.setOpacity(val / 100);
     };
+    /**
+    * @param {external:jQuery.fn.SpinButton} ctl Spin Button
+    * @param {string} [val=ctl.value]
+    * @param {boolean} noUndo
+    * @returns {undefined}
+    */
+
 
     var changeBlur = function changeBlur(ctl, val, noUndo) {
-      if (val == null) {
+      if (isNullish(val)) {
         val = ctl.value;
       }
 
@@ -31428,29 +32517,72 @@
     }); // fired when user wants to move elements to another layer
 
     var promptMoveLayerOnce = false;
-    $$b('#selLayerNames').change(function () {
-      var destLayer = this.options[this.selectedIndex].value;
-      var confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+    $$b('#selLayerNames').change(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee6() {
+      var destLayer, confirmStr, moveToLayer, ok;
+      return regeneratorRuntime.wrap(function _callee6$(_context6) {
+        while (1) {
+          switch (_context6.prev = _context6.next) {
+            case 0:
+              destLayer = this.options[this.selectedIndex].value;
+              confirmStr = uiStrings$1.notification.QmoveElemsToLayer.replace('%s', destLayer);
+              /**
+              * @param {boolean} ok
+              * @returns {undefined}
+              */
 
-      var moveToLayer = function moveToLayer(ok) {
-        if (!ok) {
-          return;
+              moveToLayer = function moveToLayer(ok) {
+                if (!ok) {
+                  return;
+                }
+
+                promptMoveLayerOnce = true;
+                svgCanvas.moveSelectedToLayer(destLayer);
+                svgCanvas.clearSelection();
+                populateLayers();
+              };
+
+              if (!destLayer) {
+                _context6.next = 14;
+                break;
+              }
+
+              if (!promptMoveLayerOnce) {
+                _context6.next = 8;
+                break;
+              }
+
+              moveToLayer(true);
+              _context6.next = 14;
+              break;
+
+            case 8:
+              _context6.next = 10;
+              return $$b.confirm(confirmStr);
+
+            case 10:
+              ok = _context6.sent;
+
+              if (ok) {
+                _context6.next = 13;
+                break;
+              }
+
+              return _context6.abrupt("return");
+
+            case 13:
+              moveToLayer(true);
+
+            case 14:
+            case "end":
+              return _context6.stop();
+          }
         }
-
-        promptMoveLayerOnce = true;
-        svgCanvas.moveSelectedToLayer(destLayer);
-        svgCanvas.clearSelection();
-        populateLayers();
-      };
-
-      if (destLayer) {
-        if (promptMoveLayerOnce) {
-          moveToLayer(true);
-        } else {
-          $$b.confirm(confirmStr, moveToLayer);
-        }
-      }
-    });
+      }, _callee6, this);
+    })));
     $$b('#font_family').change(function () {
       svgCanvas.setFontFamily(this.value);
     });
@@ -31479,8 +32611,10 @@
       var valid = isValidUnit(attr, val, selectedElement);
 
       if (!valid) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         this.value = selectedElement.getAttribute(attr);
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
@@ -31509,6 +32643,7 @@
       }
 
       this.blur();
+      return true;
     }); // Prevent selection of elements when shift-clicking
 
     $$b('#palette').mouseover(function () {
@@ -31555,7 +32690,7 @@
           keypan = false;
       $$b('#svgcanvas').bind('mousemove mouseup', function (evt) {
         if (panning === false) {
-          return;
+          return true;
         }
 
         wArea.scrollLeft -= evt.clientX - lastX;
@@ -31575,6 +32710,8 @@
           lastY = evt.clientY;
           return false;
         }
+
+        return true;
       });
       $$b(window).mouseup(function () {
         panning = false;
@@ -31759,7 +32896,7 @@
         return;
       }
 
-      var perc = parseInt($$b(this).text().split('%')[0], 10);
+      var perc = parseInt($$b(this).text().split('%')[0]);
       changeOpacity(false, perc);
     }, true); // For slider usage, see: http://jqueryui.com/demos/slider/
 
@@ -31837,13 +32974,18 @@
 
     (function () {
       var inp;
+      /**
+      *
+      * @returns {undefined}
+      */
 
       var unfocus = function unfocus() {
         $$b(inp).blur();
       };
 
       $$b('#svg_editor').find('button, select, input:not(#text)').focus(function () {
-        inp = this;
+        inp = this; // eslint-disable-line consistent-this
+
         uiContext = 'toolbars';
         workarea.mousedown(unfocus);
       }).blur(function () {
@@ -31855,60 +32997,110 @@
         }
       });
     })();
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHPath = function clickFHPath() {
       if (toolButtonClick('#tool_fhpath')) {
         svgCanvas.setMode('fhpath');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickLine = function clickLine() {
       if (toolButtonClick('#tool_line')) {
         svgCanvas.setMode('line');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickSquare = function clickSquare() {
       if (toolButtonClick('#tool_square')) {
         svgCanvas.setMode('square');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickRect = function clickRect() {
       if (toolButtonClick('#tool_rect')) {
         svgCanvas.setMode('rect');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHRect = function clickFHRect() {
       if (toolButtonClick('#tool_fhrect')) {
         svgCanvas.setMode('fhrect');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickCircle = function clickCircle() {
       if (toolButtonClick('#tool_circle')) {
         svgCanvas.setMode('circle');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickEllipse = function clickEllipse() {
       if (toolButtonClick('#tool_ellipse')) {
         svgCanvas.setMode('ellipse');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickFHEllipse = function clickFHEllipse() {
       if (toolButtonClick('#tool_fhellipse')) {
         svgCanvas.setMode('fhellipse');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickImage = function clickImage() {
       if (toolButtonClick('#tool_image')) {
         svgCanvas.setMode('image');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickZoom = function clickZoom() {
       if (toolButtonClick('#tool_zoom')) {
@@ -31916,6 +33108,11 @@
         workarea.css('cursor', zoomInIcon);
       }
     };
+    /**
+    * @param {Float} multiplier
+    * @returns {undefined}
+    */
+
 
     var zoomImage = function zoomImage(multiplier) {
       var res = svgCanvas.getResolution();
@@ -31926,6 +33123,11 @@
       zoomDone();
       updateCanvas(true);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var dblclickZoom = function dblclickZoom() {
       if (toolButtonClick('#tool_zoom')) {
@@ -31933,38 +33135,67 @@
         setSelectMode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickText = function clickText() {
       if (toolButtonClick('#tool_text')) {
         svgCanvas.setMode('text');
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickPath = function clickPath() {
       if (toolButtonClick('#tool_path')) {
         svgCanvas.setMode('path');
       }
-    }; // Delete is a contextual tool that only appears in the ribbon if
-    // an element has been selected
+    };
+    /**
+    * Delete is a contextual tool that only appears in the ribbon if
+    * an element has been selected.
+    * @returns {undefined}
+    */
 
 
     var deleteSelected = function deleteSelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.deleteSelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var cutSelected = function cutSelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.cutSelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var copySelected = function copySelected() {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         svgCanvas.copySelectedElements();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var pasteInCenter = function pasteInCenter() {
       var zoom = svgCanvas.getZoom();
@@ -31972,49 +33203,114 @@
       var y = (workarea[0].scrollTop + workarea.height() / 2) / zoom - svgCanvas.contentH;
       svgCanvas.pasteElements('point', x, y);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var moveToTopSelected = function moveToTopSelected() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveToTopSelectedElement();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var moveToBottomSelected = function moveToBottomSelected() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveToBottomSelectedElement();
       }
     };
+    /**
+    * @param {"Up"|"Down"} dir
+    * @returns {undefined}
+    */
+
 
     var moveUpDownSelected = function moveUpDownSelected(dir) {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.moveUpDownSelected(dir);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var convertToPath$$1 = function convertToPath$$1() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         svgCanvas.convertToPath();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var reorientPath = function reorientPath() {
-      if (selectedElement != null) {
+      if (!isNullish(selectedElement)) {
         path.reorient();
       }
     };
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var makeHyperlink = function makeHyperlink() {
-      if (selectedElement != null || multiselected) {
-        $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://', function (url) {
-          if (url) {
-            svgCanvas.makeHyperlink(url);
+
+    var makeHyperlink =
+    /*#__PURE__*/
+    function () {
+      var _ref17 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee7() {
+        var url;
+        return regeneratorRuntime.wrap(function _callee7$(_context7) {
+          while (1) {
+            switch (_context7.prev = _context7.next) {
+              case 0:
+                if (!(!isNullish(selectedElement) || multiselected)) {
+                  _context7.next = 5;
+                  break;
+                }
+
+                _context7.next = 3;
+                return $$b.prompt(uiStrings$1.notification.enterNewLinkURL, 'http://');
+
+              case 3:
+                url = _context7.sent;
+
+                if (url) {
+                  svgCanvas.makeHyperlink(url);
+                }
+
+              case 5:
+              case "end":
+                return _context7.stop();
+            }
           }
-        });
-      }
-    };
+        }, _callee7, this);
+      }));
+
+      return function makeHyperlink() {
+        return _ref17.apply(this, arguments);
+      };
+    }();
+    /**
+    * @param {Float} dx
+    * @param {Float} dy
+    * @returns {undefined}
+    */
+
 
     var moveSelected = function moveSelected(dx, dy) {
-      if (selectedElement != null || multiselected) {
+      if (!isNullish(selectedElement) || multiselected) {
         if (curConfig.gridSnapping) {
           // Use grid snap value regardless of zoom level
           var multi = svgCanvas.getZoom() * curConfig.snappingStep;
@@ -32025,24 +33321,44 @@
         svgCanvas.moveSelectedElements(dx, dy);
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var linkControlPoints = function linkControlPoints() {
       $$b('#tool_node_link').toggleClass('push_button_pressed tool_button');
       var linked = $$b('#tool_node_link').hasClass('push_button_pressed');
       path.linkControlPoints(linked);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clonePathNode = function clonePathNode() {
       if (path.getNodePoint()) {
         path.clonePathNode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var deletePathNode = function deletePathNode() {
       if (path.getNodePoint()) {
         path.deletePathNode();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var addSubPath = function addSubPath() {
       var button = $$b('#tool_add_subpath');
@@ -32050,21 +33366,42 @@
       button.toggleClass('push_button_pressed tool_button');
       path.addSubPath(sp);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var opencloseSubPath = function opencloseSubPath() {
       path.opencloseSubPath();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var selectNext = function selectNext() {
       svgCanvas.cycleElement(1);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var selectPrev = function selectPrev() {
       svgCanvas.cycleElement(0);
     };
+    /**
+    * @param {0|1} cw
+    * @param {Integer} step
+    * @returns {undefined}
+    */
+
 
     var rotateSelected = function rotateSelected(cw, step) {
-      if (selectedElement == null || multiselected) {
+      if (isNullish(selectedElement) || multiselected) {
         return;
       }
 
@@ -32078,43 +33415,86 @@
     };
     /**
      * @fires module:svgcanvas.SvgCanvas#event:ext-onNewDocument
-     * @returns {undefined}
+     * @returns {Promise} Resolves to `undefined`
      */
 
 
-    var clickClear = function clickClear() {
-      var _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2),
-          x = _curConfig$dimensions[0],
-          y = _curConfig$dimensions[1];
+    var clickClear =
+    /*#__PURE__*/
+    function () {
+      var _ref18 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee8() {
+        var _curConfig$dimensions, x, y, ok;
 
-      $$b.confirm(uiStrings$1.notification.QwantToClear, function (ok) {
-        if (!ok) {
-          return;
-        }
+        return regeneratorRuntime.wrap(function _callee8$(_context8) {
+          while (1) {
+            switch (_context8.prev = _context8.next) {
+              case 0:
+                _curConfig$dimensions = _slicedToArray(curConfig.dimensions, 2), x = _curConfig$dimensions[0], y = _curConfig$dimensions[1];
+                _context8.next = 3;
+                return $$b.confirm(uiStrings$1.notification.QwantToClear);
+
+              case 3:
+                ok = _context8.sent;
+
+                if (ok) {
+                  _context8.next = 6;
+                  break;
+                }
+
+                return _context8.abrupt("return");
+
+              case 6:
+                setSelectMode();
+                svgCanvas.clear();
+                svgCanvas.setResolution(x, y);
+                updateCanvas(true);
+                zoomImage();
+                populateLayers();
+                updateContextPanel();
+                prepPaints();
+                svgCanvas.runExtensions('onNewDocument');
+
+              case 15:
+              case "end":
+                return _context8.stop();
+            }
+          }
+        }, _callee8, this);
+      }));
+
+      return function clickClear() {
+        return _ref18.apply(this, arguments);
+      };
+    }();
+    /**
+    *
+    * @returns {false}
+    */
 
-        setSelectMode();
-        svgCanvas.clear();
-        svgCanvas.setResolution(x, y);
-        updateCanvas(true);
-        zoomImage();
-        populateLayers();
-        updateContextPanel();
-        prepPaints();
-        svgCanvas.runExtensions('onNewDocument');
-      });
-    };
 
     var clickBold = function clickBold() {
       svgCanvas.setBold(!svgCanvas.getBold());
       updateContextPanel();
       return false;
     };
+    /**
+    *
+    * @returns {false}
+    */
+
 
     var clickItalic = function clickItalic() {
       svgCanvas.setItalic(!svgCanvas.getItalic());
       updateContextPanel();
       return false;
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickSave = function clickSave() {
       // In the future, more options can be provided here
@@ -32126,117 +33506,141 @@
     };
 
     var loadingURL;
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var clickExport = function clickExport() {
-      $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
-      // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
-      'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'],
+    var clickExport =
+    /*#__PURE__*/
+    function () {
+      var _ref19 = _asyncToGenerator(
       /*#__PURE__*/
-      function () {
-        var _ref17 = _asyncToGenerator(
-        /*#__PURE__*/
-        regeneratorRuntime.mark(function _callee6(imgType) {
-          var exportWindowName, openExportWindow, chrome, quality;
-          return regeneratorRuntime.wrap(function _callee6$(_context6) {
-            while (1) {
-              switch (_context6.prev = _context6.next) {
-                case 0:
-                  openExportWindow = function _ref18() {
-                    var str = uiStrings$1.notification.loadingImage;
+      regeneratorRuntime.mark(function _callee9() {
+        var imgType, exportWindowName, openExportWindow, chrome, quality;
+        return regeneratorRuntime.wrap(function _callee9$(_context9) {
+          while (1) {
+            switch (_context9.prev = _context9.next) {
+              case 0:
+                openExportWindow = function _ref20() {
+                  var loadingImage = uiStrings$1.notification.loadingImage;
 
-                    if (curConfig.exportWindowType === 'new') {
-                      editor.exportWindowCt++;
-                    }
+                  if (curConfig.exportWindowType === 'new') {
+                    editor.exportWindowCt++;
+                  }
 
-                    exportWindowName = curConfig.canvasName + editor.exportWindowCt;
-                    var popHTML, popURL;
+                  exportWindowName = curConfig.canvasName + editor.exportWindowCt;
+                  var popHTML, popURL;
 
-                    if (loadingURL) {
-                      popURL = loadingURL;
+                  if (loadingURL) {
+                    popURL = loadingURL;
+                  } else {
+                    popHTML = "<!DOCTYPE html><html>\n          <head>\n            <meta charset=\"utf-8\">\n            <title>".concat(loadingImage, "</title>\n          </head>\n          <body><h1>").concat(loadingImage, "</h1></body>\n        <html>");
+
+                    if (typeof URL !== 'undefined' && URL.createObjectURL) {
+                      var blob = new Blob([popHTML], {
+                        type: 'text/html'
+                      });
+                      popURL = URL.createObjectURL(blob);
                     } else {
-                      popHTML = "<!DOCTYPE html><html>\n            <head>\n              <meta charset=\"utf-8\">\n              <title>".concat(str, "</title>\n            </head>\n            <body><h1>").concat(str, "</h1></body>\n          <html>");
-
-                      if (typeof URL !== 'undefined' && URL.createObjectURL) {
-                        var blob = new Blob([popHTML], {
-                          type: 'text/html'
-                        });
-                        popURL = URL.createObjectURL(blob);
-                      } else {
-                        popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
-                      }
-
-                      loadingURL = popURL;
+                      popURL = 'data:text/html;base64;charset=utf-8,' + encode64(popHTML);
                     }
 
-                    exportWindow = window.open(popURL, exportWindowName);
-                  };
-
-                  if (imgType) {
-                    _context6.next = 3;
-                    break;
+                    loadingURL = popURL;
                   }
 
-                  return _context6.abrupt("return");
+                  exportWindow = window.open(popURL, exportWindowName);
+                };
 
-                case 3:
-                  chrome = isChrome();
+                _context9.next = 3;
+                return $$b.select('Select an image type for export: ', [// See http://kangax.github.io/jstests/toDataUrl_mime_type_test/ for a useful list of MIME types and browser support
+                // 'ICO', // Todo: Find a way to preserve transparency in SVG-Edit if not working presently and do full packaging for x-icon; then switch back to position after 'PNG'
+                'PNG', 'JPEG', 'BMP', 'WEBP', 'PDF'], function () {
+                  var sel = $$b(this);
 
-                  if (!(imgType === 'PDF')) {
-                    _context6.next = 9;
-                    break;
+                  if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
+                    if (!$$b('#image-slider').length) {
+                      $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
+                    }
+                  } else {
+                    $$b('#image-slider').parent().remove();
                   }
+                });
 
-                  if (!customExportPDF && !chrome) {
-                    openExportWindow();
-                  }
+              case 3:
+                imgType = _context9.sent;
 
-                  svgCanvas.exportPDF(exportWindowName);
-                  _context6.next = 13;
+                if (imgType) {
+                  _context9.next = 6;
                   break;
+                }
 
-                case 9:
-                  if (!customExportImage) {
-                    openExportWindow();
-                  }
+                return _context9.abrupt("return");
 
-                  quality = parseInt($$b('#image-slider').val(), 10) / 100;
-                  /* const results = */
+              case 6:
+                chrome = isChrome();
 
-                  _context6.next = 13;
-                  return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+                if (!(imgType === 'PDF')) {
+                  _context9.next = 12;
+                  break;
+                }
 
-                case 13:
-                case "end":
-                  return _context6.stop();
-              }
+                if (!customExportPDF && !chrome) {
+                  openExportWindow();
+                }
+
+                svgCanvas.exportPDF(exportWindowName);
+                _context9.next = 16;
+                break;
+
+              case 12:
+                if (!customExportImage) {
+                  openExportWindow();
+                }
+
+                quality = parseInt($$b('#image-slider').val()) / 100;
+                /* const results = */
+
+                _context9.next = 16;
+                return svgCanvas.rasterExport(imgType, quality, exportWindowName);
+
+              case 16:
+              case "end":
+                return _context9.stop();
             }
-          }, _callee6, this);
-        }));
-
-        return function (_x5) {
-          return _ref17.apply(this, arguments);
-        };
-      }(), function () {
-        var sel = $$b(this);
-
-        if (sel.val() === 'JPEG' || sel.val() === 'WEBP') {
-          if (!$$b('#image-slider').length) {
-            $$b("<div><label>".concat(uiStrings$1.ui.quality, "\n              <input id=\"image-slider\"\n                type=\"range\" min=\"1\" max=\"100\" value=\"92\" />\n            </label></div>")).appendTo(sel.parent());
           }
-        } else {
-          $$b('#image-slider').parent().remove();
-        }
-      });
-    }; // by default, svgCanvas.open() is a no-op.
-    // it is up to an extension mechanism (opera widget, etc)
-    // to call setCustomHandlers() which will make it do something
+        }, _callee9, this);
+      }));
+
+      return function clickExport() {
+        return _ref19.apply(this, arguments);
+      };
+    }();
+    /**
+     * By default, svgCanvas.open() is a no-op. It is up to an extension
+     *  mechanism (opera widget, etc.) to call `setCustomHandlers()` which
+     *  will make it do something.
+     * @returns {undefined}
+     */
 
 
     var clickOpen = function clickOpen() {
       svgCanvas.open();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
+
+    var clickImport = function clickImport() {
+      /* */
+    };
+    /**
+    *
+    * @returns {undefined}
+    */
 
-    var clickImport = function clickImport() {};
 
     var clickUndo = function clickUndo() {
       if (undoMgr.getUndoStackSize() > 0) {
@@ -32244,6 +33648,11 @@
         populateLayers();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickRedo = function clickRedo() {
       if (undoMgr.getRedoStackSize() > 0) {
@@ -32251,6 +33660,11 @@
         populateLayers();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickGroup = function clickGroup() {
       // group
@@ -32260,15 +33674,30 @@
         svgCanvas.ungroupSelectedElement();
       }
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickClone = function clickClone() {
       svgCanvas.cloneSelectedElements(20, 20);
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickAlign = function clickAlign() {
       var letter = this.id.replace('tool_align', '').charAt(0);
       svgCanvas.alignSelectedElements(letter, $$b('#align_relative_to').val());
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var clickWireframe = function clickWireframe() {
       $$b('#tool_wireframe').toggleClass('push_button_pressed tool_button');
@@ -32296,6 +33725,10 @@
     }).css('position', 'absolute');
     var docprops = false;
     var preferences = false;
+    /**
+    *
+    * @returns {undefined}
+    */
 
     var showDocProperties = function showDocProperties() {
       if (docprops) {
@@ -32318,6 +33751,11 @@
       $$b('#canvas_title').val(svgCanvas.getDocumentTitle());
       $$b('#svg_docprops').show();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var showPreferences = function showPreferences() {
       if (preferences) {
@@ -32327,8 +33765,6 @@
       preferences = true;
       $$b('#main_menu').hide(); // Update background color with current one
 
-      var blocks = $$b('#bg_blocks div');
-      var curBg = 'cur_background';
       var canvasBg = curPrefs.bkgd_color;
       var url = $$b.pref('bkgd_url');
       blocks.each(function () {
@@ -32354,41 +33790,94 @@
       $$b('#grid_color').attr('value', curConfig.gridColor);
       $$b('#svg_prefs').show();
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var hideSourceEditor = function hideSourceEditor() {
       $$b('#svg_source_editor').hide();
       editingsource = false;
       $$b('#svg_source_textarea').blur();
     };
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var saveSourceEditor = function saveSourceEditor() {
-      if (!editingsource) {
-        return;
-      }
 
-      var saveChanges = function saveChanges() {
-        svgCanvas.clearSelection();
-        hideSourceEditor();
-        zoomImage();
-        populateLayers();
-        updateTitle();
-        prepPaints();
-      };
+    var saveSourceEditor =
+    /*#__PURE__*/
+    function () {
+      var _ref21 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee10() {
+        var saveChanges, ok;
+        return regeneratorRuntime.wrap(function _callee10$(_context10) {
+          while (1) {
+            switch (_context10.prev = _context10.next) {
+              case 0:
+                if (editingsource) {
+                  _context10.next = 2;
+                  break;
+                }
 
-      if (!svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
-        $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource, function (ok) {
-          if (!ok) {
-            return false;
+                return _context10.abrupt("return");
+
+              case 2:
+                saveChanges = function saveChanges() {
+                  svgCanvas.clearSelection();
+                  hideSourceEditor();
+                  zoomImage();
+                  populateLayers();
+                  updateTitle();
+                  prepPaints();
+                };
+
+                if (svgCanvas.setSvgString($$b('#svg_source_textarea').val())) {
+                  _context10.next = 11;
+                  break;
+                }
+
+                _context10.next = 6;
+                return $$b.confirm(uiStrings$1.notification.QerrorsRevertToSource);
+
+              case 6:
+                ok = _context10.sent;
+
+                if (ok) {
+                  _context10.next = 9;
+                  break;
+                }
+
+                return _context10.abrupt("return");
+
+              case 9:
+                saveChanges();
+                return _context10.abrupt("return");
+
+              case 11:
+                saveChanges();
+                setSelectMode();
+
+              case 13:
+              case "end":
+                return _context10.stop();
+            }
           }
+        }, _callee10, this);
+      }));
 
-          saveChanges();
-        });
-      } else {
-        saveChanges();
-      }
+      return function saveSourceEditor() {
+        return _ref21.apply(this, arguments);
+      };
+    }();
+    /**
+    *
+    * @returns {undefined}
+    */
 
-      setSelectMode();
-    };
 
     var hideDocProperties = function hideDocProperties() {
       $$b('#svg_docprops').hide();
@@ -32397,11 +33886,21 @@
       $$b('#image_save_opts input').val([$$b.pref('img_save')]);
       docprops = false;
     };
+    /**
+    *
+    * @returns {undefined}
+    */
+
 
     var hidePreferences = function hidePreferences() {
       $$b('#svg_prefs').hide();
       preferences = false;
     };
+    /**
+    *
+    * @returns {boolean} Whether there were problems saving the document properties
+    */
+
 
     var saveDocProperties = function saveDocProperties() {
       // set title
@@ -32415,22 +33914,27 @@
           h = height.val();
 
       if (w !== 'fit' && !isValidUnit('width', w)) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         width.parent().addClass('error');
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
       width.parent().removeClass('error');
 
       if (h !== 'fit' && !isValidUnit('height', h)) {
-        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         height.parent().addClass('error');
+        /* await */
+
+        $$b.alert(uiStrings$1.notification.invalidAttrValGiven);
         return false;
       }
 
       height.parent().removeClass('error');
 
       if (!svgCanvas.setResolution(w, h)) {
+        /* await */
         $$b.alert(uiStrings$1.notification.noContentToFitTo);
         return false;
       } // Set image save option
@@ -32439,6 +33943,7 @@
       $$b.pref('img_save', $$b('#image_save_opts :checked').val());
       updateCanvas();
       hideDocProperties();
+      return true;
     };
     /**
     * Save user preferences based on current values in the UI.
@@ -32451,12 +33956,12 @@
     /*#__PURE__*/
     _asyncToGenerator(
     /*#__PURE__*/
-    regeneratorRuntime.mark(function _callee7() {
-      var color, lang, _ref20, langParam, langData;
+    regeneratorRuntime.mark(function _callee11() {
+      var color, lang, _ref23, langParam, langData;
 
-      return regeneratorRuntime.wrap(function _callee7$(_context7) {
+      return regeneratorRuntime.wrap(function _callee11$(_context11) {
         while (1) {
-          switch (_context7.prev = _context7.next) {
+          switch (_context11.prev = _context11.next) {
             case 0:
               // Set background
               color = $$b('#bg_blocks div.cur_background').css('background-color') || '#FFF';
@@ -32465,18 +33970,18 @@
               lang = $$b('#lang_select').val();
 
               if (!(lang !== $$b.pref('lang'))) {
-                _context7.next = 11;
+                _context11.next = 11;
                 break;
               }
 
-              _context7.next = 6;
+              _context11.next = 6;
               return editor.putLocale(lang, goodLangs, curConfig);
 
             case 6:
-              _ref20 = _context7.sent;
-              langParam = _ref20.langParam;
-              langData = _ref20.langData;
-              _context7.next = 11;
+              _ref23 = _context11.sent;
+              langParam = _ref23.langParam;
+              langData = _ref23.langData;
+              _context11.next = 11;
               return setLang(langParam, langData);
 
             case 11:
@@ -32500,43 +34005,95 @@
 
             case 22:
             case "end":
-              return _context7.stop();
+              return _context11.stop();
           }
         }
-      }, _callee7, this);
+      }, _callee11, this);
     }));
 
     var resetScrollPos = $$b.noop;
+    /**
+    *
+    * @returns {Promise} Resolves to `undefined`
+    */
 
-    var cancelOverlays = function cancelOverlays() {
-      $$b('#dialog_box').hide();
+    var cancelOverlays =
+    /*#__PURE__*/
+    function () {
+      var _ref24 = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee12() {
+        var ok;
+        return regeneratorRuntime.wrap(function _callee12$(_context12) {
+          while (1) {
+            switch (_context12.prev = _context12.next) {
+              case 0:
+                $$b('#dialog_box').hide();
 
-      if (!editingsource && !docprops && !preferences) {
-        if (curContext) {
-          svgCanvas.leaveContext();
-        }
+                if (!(!editingsource && !docprops && !preferences)) {
+                  _context12.next = 4;
+                  break;
+                }
 
-        return;
-      }
+                if (curContext) {
+                  svgCanvas.leaveContext();
+                }
 
-      if (editingsource) {
-        if (origSource !== $$b('#svg_source_textarea').val()) {
-          $$b.confirm(uiStrings$1.notification.QignoreSourceChanges, function (ok) {
-            if (ok) {
-              hideSourceEditor();
+                return _context12.abrupt("return");
+
+              case 4:
+                if (!editingsource) {
+                  _context12.next = 15;
+                  break;
+                }
+
+                if (!(origSource !== $$b('#svg_source_textarea').val())) {
+                  _context12.next = 12;
+                  break;
+                }
+
+                _context12.next = 8;
+                return $$b.confirm(uiStrings$1.notification.QignoreSourceChanges);
+
+              case 8:
+                ok = _context12.sent;
+
+                if (ok) {
+                  hideSourceEditor();
+                }
+
+                _context12.next = 13;
+                break;
+
+              case 12:
+                hideSourceEditor();
+
+              case 13:
+                _context12.next = 16;
+                break;
+
+              case 15:
+                if (docprops) {
+                  hideDocProperties();
+                } else if (preferences) {
+                  hidePreferences();
+                }
+
+              case 16:
+                resetScrollPos();
+
+              case 17:
+              case "end":
+                return _context12.stop();
             }
-          });
-        } else {
-          hideSourceEditor();
-        }
-      } else if (docprops) {
-        hideDocProperties();
-      } else if (preferences) {
-        hidePreferences();
-      }
+          }
+        }, _callee12, this);
+      }));
 
-      resetScrollPos();
-    };
+      return function cancelOverlays() {
+        return _ref24.apply(this, arguments);
+      };
+    }();
 
     var winWh = {
       width: $$b(window).width(),
@@ -32559,9 +34116,13 @@
       editor.ready(function () {
         // TODO: Find better way to detect when to do this to minimize
         // flickering effect
-        setTimeout(function () {
-          resetScrollPos();
-        }, 500);
+        return new Promise(function (resolve, reject) {
+          // eslint-disable-line promise/avoid-new
+          setTimeout(function () {
+            resetScrollPos();
+            resolve();
+          }, 500);
+        });
       });
       workarea.scroll(function () {
         curScrollPos = {
@@ -32590,6 +34151,7 @@
       }
     });
     $$b('#url_notice').click(function () {
+      /* await */
       $$b.alert(this.title);
     });
     $$b('#change_image_url').click(promptImgURL); // added these event handlers for all the push buttons so they
@@ -32632,8 +34194,13 @@
           button.title = [title.substr(0, index), 'Cmd+', title.substr(index + 5)].join('');
         }
       }
-    } // TODO: go back to the color boxes having white background-color and then setting
-    //  background-image to none.png (otherwise partially transparent gradients look weird)
+    }
+    /**
+    * @param {external:jQuery} elem
+    * @todo Go back to the color boxes having white background-color and then setting
+    *  background-image to none.png (otherwise partially transparent gradients look weird)
+    * @returns {undefined}
+    */
 
 
     var colorPicker = function colorPicker(elem) {
@@ -32668,131 +34235,149 @@
       });
     };
 
-    var PaintBox = function PaintBox(container, type) {
-      var paintColor, paintOpacity;
-      var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
+    var PaintBox =
+    /*#__PURE__*/
+    function () {
+      function PaintBox(container, type) {
+        _classCallCheck(this, PaintBox);
 
-      var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n        <rect width=\"16.5\" height=\"16.5\"\n          fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n        <defs><linearGradient id=\"gradbox_\"/></defs>\n      </svg>"), 'text/xml');
-      var docElem = svgdocbox.documentElement;
-      docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
-      docElem.setAttribute('width', 16.5);
-      this.rect = docElem.firstElementChild;
-      this.defs = docElem.getElementsByTagName('defs')[0];
-      this.grad = this.defs.firstElementChild;
-      this.paint = new $$b.jGraduate.Paint({
-        solidColor: cur.color
-      });
-      this.type = type;
+        var cur = curConfig[type === 'fill' ? 'initFill' : 'initStroke']; // set up gradients to be used for the buttons
 
-      this.setPaint = function (paint, apply) {
-        this.paint = paint;
-        var ptype = paint.type;
-        var opac = paint.alpha / 100;
-        var fillAttr = 'none';
+        var svgdocbox = new DOMParser().parseFromString("<svg xmlns=\"http://www.w3.org/2000/svg\">\n          <rect width=\"16.5\" height=\"16.5\"\n            fill=\"#".concat(cur.color, "\" opacity=\"").concat(cur.opacity, "\"/>\n          <defs><linearGradient id=\"gradbox_\"/></defs>\n        </svg>"), 'text/xml');
+        var docElem = svgdocbox.documentElement;
+        docElem = $$b(container)[0].appendChild(document.importNode(docElem, true));
+        docElem.setAttribute('width', 16.5);
+        this.rect = docElem.firstElementChild;
+        this.defs = docElem.getElementsByTagName('defs')[0];
+        this.grad = this.defs.firstElementChild;
+        this.paint = new $$b.jGraduate.Paint({
+          solidColor: cur.color
+        });
+        this.type = type;
+      }
 
-        switch (ptype) {
-          case 'solidColor':
-            fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
-            break;
+      _createClass(PaintBox, [{
+        key: "setPaint",
+        value: function setPaint(paint, apply) {
+          this.paint = paint;
+          var ptype = paint.type;
+          var opac = paint.alpha / 100;
+          var fillAttr = 'none';
 
-          case 'linearGradient':
-          case 'radialGradient':
-            this.grad.remove();
-            this.grad = this.defs.appendChild(paint[ptype]);
-            var id = this.grad.id = 'gradbox_' + this.type;
-            fillAttr = 'url(#' + id + ')';
-            break;
-        }
-
-        this.rect.setAttribute('fill', fillAttr);
-        this.rect.setAttribute('opacity', opac);
-
-        if (apply) {
-          svgCanvas.setColor(this.type, paintColor, true);
-          svgCanvas.setPaintOpacity(this.type, paintOpacity, true);
-        }
-      };
-
-      this.update = function (apply) {
-        if (!selectedElement) {
-          return;
-        }
-
-        var type = this.type;
-
-        switch (selectedElement.tagName) {
-          case 'use':
-          case 'image':
-          case 'foreignObject':
-            // These elements don't have fill or stroke, so don't change
-            // the current value
-            return;
-
-          case 'g':
-          case 'a':
-            {
-              var childs = selectedElement.getElementsByTagName('*');
-              var gPaint = null;
-
-              for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
-                var elem = childs[_i3];
-                var p = elem.getAttribute(type);
-
-                if (_i3 === 0) {
-                  gPaint = p;
-                } else if (gPaint !== p) {
-                  gPaint = null;
-                  break;
-                }
-              }
-
-              if (gPaint === null) {
-                // No common color, don't update anything
-                paintColor = null;
-                return;
-              }
-
-              paintColor = gPaint;
-              paintOpacity = 1;
+          switch (ptype) {
+            case 'solidColor':
+              fillAttr = paint[ptype] !== 'none' ? '#' + paint[ptype] : paint[ptype];
               break;
-            }
 
-          default:
-            paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+            case 'linearGradient':
+            case 'radialGradient':
+              {
+                this.grad.remove();
+                this.grad = this.defs.appendChild(paint[ptype]);
+                var id = this.grad.id = 'gradbox_' + this.type;
+                fillAttr = 'url(#' + id + ')';
+                break;
+              }
+          }
 
-            if (isNaN(paintOpacity)) {
-              paintOpacity = 1.0;
-            }
+          this.rect.setAttribute('fill', fillAttr);
+          this.rect.setAttribute('opacity', opac);
 
-            var defColor = type === 'fill' ? 'black' : 'none';
-            paintColor = selectedElement.getAttribute(type) || defColor;
+          if (apply) {
+            svgCanvas.setColor(this.type, this._paintColor, true);
+            svgCanvas.setPaintOpacity(this.type, this._paintOpacity, true);
+          }
         }
+      }, {
+        key: "update",
+        value: function update(apply) {
+          if (!selectedElement) {
+            return;
+          }
 
-        if (apply) {
-          svgCanvas.setColor(type, paintColor, true);
-          svgCanvas.setPaintOpacity(type, paintOpacity, true);
+          var type = this.type;
+
+          switch (selectedElement.tagName) {
+            case 'use':
+            case 'image':
+            case 'foreignObject':
+              // These elements don't have fill or stroke, so don't change
+              // the current value
+              return;
+
+            case 'g':
+            case 'a':
+              {
+                var childs = selectedElement.getElementsByTagName('*');
+                var gPaint = null;
+
+                for (var _i3 = 0, len = childs.length; _i3 < len; _i3++) {
+                  var elem = childs[_i3];
+                  var p = elem.getAttribute(type);
+
+                  if (_i3 === 0) {
+                    gPaint = p;
+                  } else if (gPaint !== p) {
+                    gPaint = null;
+                    break;
+                  }
+                }
+
+                if (gPaint === null) {
+                  // No common color, don't update anything
+                  this._paintColor = null;
+                  return;
+                }
+
+                this._paintColor = gPaint;
+                this._paintOpacity = 1;
+                break;
+              }
+
+            default:
+              {
+                this._paintOpacity = parseFloat(selectedElement.getAttribute(type + '-opacity'));
+
+                if (isNaN(this._paintOpacity)) {
+                  this._paintOpacity = 1.0;
+                }
+
+                var defColor = type === 'fill' ? 'black' : 'none';
+                this._paintColor = selectedElement.getAttribute(type) || defColor;
+              }
+          }
+
+          if (apply) {
+            svgCanvas.setColor(type, this._paintColor, true);
+            svgCanvas.setPaintOpacity(type, this._paintOpacity, true);
+          }
+
+          this._paintOpacity *= 100;
+          var paint = getPaint(this._paintColor, this._paintOpacity, type); // update the rect inside #fill_color/#stroke_color
+
+          this.setPaint(paint);
         }
+      }, {
+        key: "prep",
+        value: function prep() {
+          var ptype = this.paint.type;
 
-        paintOpacity *= 100;
-        var paint = getPaint(paintColor, paintOpacity, type); // update the rect inside #fill_color/#stroke_color
-
-        this.setPaint(paint);
-      };
-
-      this.prep = function () {
-        var ptype = this.paint.type;
-
-        switch (ptype) {
-          case 'linearGradient':
-          case 'radialGradient':
-            var paint = new $$b.jGraduate.Paint({
-              copy: this.paint
-            });
-            svgCanvas.setPaint(type, paint);
-            break;
+          switch (ptype) {
+            case 'linearGradient':
+            case 'radialGradient':
+              {
+                var paint = new $$b.jGraduate.Paint({
+                  copy: this.paint
+                });
+                svgCanvas.setPaint(this.type, paint);
+                break;
+              }
+          }
         }
-      };
-    };
+      }]);
+
+      return PaintBox;
+    }();
 
     paintBox.fill = new PaintBox('#fill_color', 'fill');
     paintBox.stroke = new PaintBox('#stroke_color', 'stroke');
@@ -32875,29 +34460,61 @@
       $$b(this).removeClass('push_button_pressed').addClass('push_button');
     }); // ask for a layer name
 
-    $$b('#layer_new').click(function () {
-      var uniqName,
-          i = svgCanvas.getCurrentDrawing().getNumLayers();
+    $$b('#layer_new').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee13() {
+      var uniqName, i, newName;
+      return regeneratorRuntime.wrap(function _callee13$(_context13) {
+        while (1) {
+          switch (_context13.prev = _context13.next) {
+            case 0:
+              i = svgCanvas.getCurrentDrawing().getNumLayers();
 
-      do {
-        uniqName = uiStrings$1.layers.layer + ' ' + ++i;
-      } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
+              do {
+                uniqName = uiStrings$1.layers.layer + ' ' + ++i;
+              } while (svgCanvas.getCurrentDrawing().hasLayer(uniqName));
 
-      $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName, function (newName) {
-        if (!newName) {
-          return;
+              _context13.next = 4;
+              return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, uniqName);
+
+            case 4:
+              newName = _context13.sent;
+
+              if (newName) {
+                _context13.next = 7;
+                break;
+              }
+
+              return _context13.abrupt("return");
+
+            case 7:
+              if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                _context13.next = 10;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.dupeLayerName);
+              return _context13.abrupt("return");
+
+            case 10:
+              svgCanvas.createLayer(newName);
+              updateContextPanel();
+              populateLayers();
+
+            case 13:
+            case "end":
+              return _context13.stop();
+          }
         }
-
-        if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.dupeLayerName);
-          return;
-        }
-
-        svgCanvas.createLayer(newName);
-        updateContextPanel();
-        populateLayers();
-      });
-    });
+      }, _callee13, this);
+    })));
+    /**
+     *
+     * @returns {undefined}
+     */
 
     function deleteLayer() {
       if (svgCanvas.deleteCurrentLayer()) {
@@ -32910,23 +34527,67 @@
         $$b('#layerlist tr.layer:first').addClass('layersel');
       }
     }
+    /**
+     *
+     * @returns {undefined}
+     */
+
 
     function cloneLayer() {
-      var name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
-      $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name, function (newName) {
-        if (!newName) {
-          return;
-        }
+      return _cloneLayer.apply(this, arguments);
+    }
+    /**
+     *
+     * @returns {undefined}
+     */
 
-        if (svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.dupeLayerName);
-          return;
-        }
 
-        svgCanvas.cloneLayer(newName);
-        updateContextPanel();
-        populateLayers();
-      });
+    function _cloneLayer() {
+      _cloneLayer = _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee19() {
+        var name, newName;
+        return regeneratorRuntime.wrap(function _callee19$(_context19) {
+          while (1) {
+            switch (_context19.prev = _context19.next) {
+              case 0:
+                name = svgCanvas.getCurrentDrawing().getCurrentLayerName() + ' copy';
+                _context19.next = 3;
+                return $$b.prompt(uiStrings$1.notification.enterUniqueLayerName, name);
+
+              case 3:
+                newName = _context19.sent;
+
+                if (newName) {
+                  _context19.next = 6;
+                  break;
+                }
+
+                return _context19.abrupt("return");
+
+              case 6:
+                if (!svgCanvas.getCurrentDrawing().hasLayer(newName)) {
+                  _context19.next = 9;
+                  break;
+                }
+
+                /* await */
+                $$b.alert(uiStrings$1.notification.dupeLayerName);
+                return _context19.abrupt("return");
+
+              case 9:
+                svgCanvas.cloneLayer(newName);
+                updateContextPanel();
+                populateLayers();
+
+              case 12:
+              case "end":
+                return _context19.stop();
+            }
+          }
+        }, _callee19, this);
+      }));
+      return _cloneLayer.apply(this, arguments);
     }
 
     function mergeLayer() {
@@ -32938,6 +34599,11 @@
       updateContextPanel();
       populateLayers();
     }
+    /**
+     * @param {Integer} pos
+     * @returns {undefined}
+     */
+
 
     function moveLayer(pos) {
       var total = svgCanvas.getCurrentDrawing().getNumLayers();
@@ -32957,23 +34623,52 @@
     $$b('#layer_down').click(function () {
       moveLayer(1);
     });
-    $$b('#layer_rename').click(function () {
-      // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
-      var oldName = $$b('#layerlist tr.layersel td.layername').text();
-      $$b.prompt(uiStrings$1.notification.enterNewLayerName, '', function (newName) {
-        if (!newName) {
-          return;
-        }
+    $$b('#layer_rename').click(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee14() {
+      var oldName, newName;
+      return regeneratorRuntime.wrap(function _callee14$(_context14) {
+        while (1) {
+          switch (_context14.prev = _context14.next) {
+            case 0:
+              // const curIndex = $('#layerlist tr.layersel').prevAll().length; // Currently unused
+              oldName = $$b('#layerlist tr.layersel td.layername').text();
+              _context14.next = 3;
+              return $$b.prompt(uiStrings$1.notification.enterNewLayerName, '');
 
-        if (oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName)) {
-          $$b.alert(uiStrings$1.notification.layerHasThatName);
-          return;
-        }
+            case 3:
+              newName = _context14.sent;
 
-        svgCanvas.renameCurrentLayer(newName);
-        populateLayers();
-      });
-    });
+              if (newName) {
+                _context14.next = 6;
+                break;
+              }
+
+              return _context14.abrupt("return");
+
+            case 6:
+              if (!(oldName === newName || svgCanvas.getCurrentDrawing().hasLayer(newName))) {
+                _context14.next = 9;
+                break;
+              }
+
+              /* await */
+              $$b.alert(uiStrings$1.notification.layerHasThatName);
+              return _context14.abrupt("return");
+
+            case 9:
+              svgCanvas.renameCurrentLayer(newName);
+              populateLayers();
+
+            case 11:
+            case "end":
+              return _context14.stop();
+          }
+        }
+      }, _callee14, this);
+    })));
     var SIDEPANEL_MAXWIDTH = 300;
     var SIDEPANEL_OPENWIDTH = 150;
     var sidedrag = -1,
@@ -32989,10 +34684,15 @@
       var rulerX = $$b('#ruler_x');
       $$b('#sidepanels').width('+=' + delta);
       $$b('#layerpanel').width('+=' + delta);
-      rulerX.css('right', parseInt(rulerX.css('right'), 10) + delta);
-      workarea.css('right', parseInt(workarea.css('right'), 10) + delta);
+      rulerX.css('right', parseInt(rulerX.css('right')) + delta);
+      workarea.css('right', parseInt(workarea.css('right')) + delta);
       svgCanvas.runExtensions('workareaResized');
     };
+    /**
+    * @param {Event} evt
+    * @returns {undefined}
+    */
+
 
     var resizeSidePanel = function resizeSidePanel(evt) {
       if (!allowmove) {
@@ -33065,6 +34765,9 @@
     };
 
     $$b(window).bind('load resize', centerCanvas);
+    /**
+     * @implements {module:jQuerySpinButton.StepCallback}
+     */
 
     function stepFontSize(elem, step) {
       var origVal = Number(elem.value);
@@ -33093,6 +34796,10 @@
 
       return sugVal;
     }
+    /**
+     * @implements {module:jQuerySpinButton.StepCallback}
+     */
+
 
     function stepZoom(elem, step) {
       var origVal = Number(elem.value);
@@ -33655,9 +35362,9 @@
                 keyval = opts.key;
               }
 
-              keyval += '';
+              keyval = String(keyval);
               var fn = opts.fn;
-              $$b.each(keyval.split('/'), function (i, key) {
+              $$b.each(keyval.split('/'), function (j, key) {
                 $$b(document).bind('keydown', key, function (e) {
                   fn();
 
@@ -33679,6 +35386,8 @@
                 }
               }
             }
+
+            return true;
           }); // Setup flyouts
 
           setupFlyouts(flyouts); // Misc additional actions
@@ -33778,7 +35487,7 @@
         toggleSidePanel();
       }
 
-      $$b('#rulers').toggle(!!curConfig.showRulers);
+      $$b('#rulers').toggle(Boolean(curConfig.showRulers));
 
       if (curConfig.showRulers) {
         $$b('#show_rulers')[0].checked = true;
@@ -33908,10 +35617,18 @@
           break;
       }
     });
+    /**
+    * Implements {@see module:jQueryContextMenu.jQueryContextMenuListener}
+    * @param {"dupe"|"delete"|"merge_down"|"merge_all"} action
+    * @param {external:jQuery} el
+    * @param {{x: Float, y: Float, docX: Float, docY: Float}} pos
+    * @returns {undefined}
+    */
 
     var lmenuFunc = function lmenuFunc(action, el, pos) {
       switch (action) {
         case 'dupe':
+          /* await */
           cloneLayer();
           break;
 
@@ -33945,6 +35662,9 @@
     });
     $$b('#cmenu_canvas li').disableContextMenu();
     canvMenu.enableContextMenuItems('#delete,#cut,#copy');
+    /**
+     * @returns {undefined}
+     */
 
     function enableOrDisableClipboard() {
       var svgeditClipboard;
@@ -33977,6 +35697,8 @@
 
         return uiStrings$1.notification.unsavedChanges;
       }
+
+      return true;
     });
     /**
     * Expose the `uiStrings`.
@@ -33988,36 +35710,48 @@
       return uiStrings$1;
     };
     /**
-    * @callback module:SVGEditor.OpenPrepCallback
-    * @param {boolean} noChanges
-    * @returns {undefined}
-    */
-
-    /**
-    * @param {module:SVGEditor.OpenPrepCallback} func Confirmation dialog callback
-    * @returns {undefined}
+    * @returns {Promise} Resolves to boolean indicating `true` if there were no changes
+    *  and `false` after the user confirms.
     */
 
 
-    editor.openPrep = function (func) {
+    editor.openPrep = function () {
       $$b('#main_menu').hide();
 
       if (undoMgr.getUndoStackSize() === 0) {
-        func(true);
-      } else {
-        $$b.confirm(uiStrings$1.notification.QwantToOpen, func);
+        return true;
       }
+
+      return $$b.confirm(uiStrings$1.notification.QwantToOpen);
     };
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragEnter(e) {
       e.stopPropagation();
       e.preventDefault(); // and indicator should be displayed here, such as "drop files here"
     }
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragOver(e) {
       e.stopPropagation();
       e.preventDefault();
     }
+    /**
+     *
+     * @param {Event} e
+     * @returns {undefined}
+     */
+
 
     function onDragLeave(e) {
       e.stopPropagation();
@@ -34029,6 +35763,10 @@
 
 
     if (window.FileReader) {
+      /**
+      * @param {Event} e
+      * @returns {undefined}
+      */
       var importImage = function importImage(e) {
         $$b.process_cancel(uiStrings$1.notification.loadingImage);
         e.stopPropagation();
@@ -34046,72 +35784,79 @@
         else */
 
 
-        if (file.type.includes('image')) {
-          // Detected an image
-          // svg handling
-          var reader;
+        if (!file.type.includes('image')) {
+          return;
+        } // Detected an image
+        // svg handling
 
-          if (file.type.includes('svg')) {
-            reader = new FileReader();
 
-            reader.onloadend = function (e) {
-              var newElement = svgCanvas.importSvgString(e.target.result, true);
-              svgCanvas.ungroupSelectedElement();
-              svgCanvas.ungroupSelectedElement();
-              svgCanvas.groupSelectedElements();
+        var reader;
+
+        if (file.type.includes('svg')) {
+          reader = new FileReader();
+
+          reader.onloadend = function (ev) {
+            var newElement = svgCanvas.importSvgString(ev.target.result, true);
+            svgCanvas.ungroupSelectedElement();
+            svgCanvas.ungroupSelectedElement();
+            svgCanvas.groupSelectedElements();
+            svgCanvas.alignSelectedElements('m', 'page');
+            svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
+
+            svgCanvas.selectOnly([newElement]);
+            $$b('#dialog_box').hide();
+          };
+
+          reader.readAsText(file);
+        } else {
+          // bitmap handling
+          reader = new FileReader();
+
+          reader.onloadend = function (_ref27) {
+            var result = _ref27.target.result;
+
+            /**
+            * Insert the new image until we know its dimensions
+            * @param {Float} width
+            * @param {Float} height
+            * @returns {undefined}
+            */
+            var insertNewImage = function insertNewImage(width, height) {
+              var newImage = svgCanvas.addSVGElementFromJson({
+                element: 'image',
+                attr: {
+                  x: 0,
+                  y: 0,
+                  width: width,
+                  height: height,
+                  id: svgCanvas.getNextId(),
+                  style: 'pointer-events:inherit'
+                }
+              });
+              svgCanvas.setHref(newImage, result);
+              svgCanvas.selectOnly([newImage]);
               svgCanvas.alignSelectedElements('m', 'page');
-              svgCanvas.alignSelectedElements('c', 'page'); // highlight imported element, otherwise we get strange empty selectbox
-
-              svgCanvas.selectOnly([newElement]);
+              svgCanvas.alignSelectedElements('c', 'page');
+              updateContextPanel();
               $$b('#dialog_box').hide();
+            }; // create dummy img so we know the default dimensions
+
+
+            var imgWidth = 100;
+            var imgHeight = 100;
+            var img = new Image();
+            img.style.opacity = 0;
+
+            img.onload = function () {
+              imgWidth = img.offsetWidth || img.naturalWidth || img.width;
+              imgHeight = img.offsetHeight || img.naturalHeight || img.height;
+              insertNewImage(imgWidth, imgHeight);
             };
 
-            reader.readAsText(file);
-          } else {
-            // bitmap handling
-            reader = new FileReader();
+            img.src = result;
+          };
 
-            reader.onloadend = function (_ref21) {
-              var result = _ref21.target.result;
-
-              // let's insert the new image until we know its dimensions
-              var insertNewImage = function insertNewImage(width, height) {
-                var newImage = svgCanvas.addSVGElementFromJson({
-                  element: 'image',
-                  attr: {
-                    x: 0,
-                    y: 0,
-                    width: width,
-                    height: height,
-                    id: svgCanvas.getNextId(),
-                    style: 'pointer-events:inherit'
-                  }
-                });
-                svgCanvas.setHref(newImage, result);
-                svgCanvas.selectOnly([newImage]);
-                svgCanvas.alignSelectedElements('m', 'page');
-                svgCanvas.alignSelectedElements('c', 'page');
-                updateContextPanel();
-                $$b('#dialog_box').hide();
-              }; // create dummy img so we know the default dimensions
-
-
-              var imgWidth = 100;
-              var imgHeight = 100;
-              var img = new Image();
-              img.style.opacity = 0;
-
-              img.onload = function () {
-                imgWidth = img.offsetWidth || img.naturalWidth || img.width;
-                imgHeight = img.offsetHeight || img.naturalHeight || img.height;
-                insertNewImage(imgWidth, imgHeight);
-              };
-
-              img.src = result;
-            };
-
-            reader.readAsDataURL(file);
-          }
+          reader.readAsDataURL(file);
         }
       };
 
@@ -34119,28 +35864,75 @@
       workarea[0].addEventListener('dragover', onDragOver);
       workarea[0].addEventListener('dragleave', onDragLeave);
       workarea[0].addEventListener('drop', importImage);
-      var open = $$b('<input type="file">').click(function () {
-        var f = this;
-        editor.openPrep(function (ok) {
-          if (!ok) {
-            return;
+      var open = $$b('<input type="file">').click(
+      /*#__PURE__*/
+      _asyncToGenerator(
+      /*#__PURE__*/
+      regeneratorRuntime.mark(function _callee16() {
+        var ok, reader;
+        return regeneratorRuntime.wrap(function _callee16$(_context16) {
+          while (1) {
+            switch (_context16.prev = _context16.next) {
+              case 0:
+                _context16.next = 2;
+                return editor.openPrep();
+
+              case 2:
+                ok = _context16.sent;
+
+                if (ok) {
+                  _context16.next = 5;
+                  break;
+                }
+
+                return _context16.abrupt("return");
+
+              case 5:
+                svgCanvas.clear();
+
+                if (this.files.length === 1) {
+                  $$b.process_cancel(uiStrings$1.notification.loadingImage);
+                  reader = new FileReader();
+
+                  reader.onloadend =
+                  /*#__PURE__*/
+                  function () {
+                    var _ref29 = _asyncToGenerator(
+                    /*#__PURE__*/
+                    regeneratorRuntime.mark(function _callee15(e) {
+                      return regeneratorRuntime.wrap(function _callee15$(_context15) {
+                        while (1) {
+                          switch (_context15.prev = _context15.next) {
+                            case 0:
+                              _context15.next = 2;
+                              return loadSvgString(e.target.result);
+
+                            case 2:
+                              updateCanvas();
+
+                            case 3:
+                            case "end":
+                              return _context15.stop();
+                          }
+                        }
+                      }, _callee15, this);
+                    }));
+
+                    return function (_x6) {
+                      return _ref29.apply(this, arguments);
+                    };
+                  }();
+
+                  reader.readAsText(this.files[0]);
+                }
+
+              case 7:
+              case "end":
+                return _context16.stop();
+            }
           }
-
-          svgCanvas.clear();
-
-          if (f.files.length === 1) {
-            $$b.process_cancel(uiStrings$1.notification.loadingImage);
-            var reader = new FileReader();
-
-            reader.onloadend = function (e) {
-              loadSvgString(e.target.result);
-              updateCanvas();
-            };
-
-            reader.readAsText(f.files[0]);
-          }
-        });
-      });
+        }, _callee16, this);
+      })));
       $$b('#tool_open').show().prepend(open);
       var imgImport = $$b('<input type="file">').change(importImage);
       $$b('#tool_import').show().prepend(imgImport);
@@ -34163,24 +35955,26 @@
     var setLang = editor.setLang =
     /*#__PURE__*/
     function () {
-      var _ref22 = _asyncToGenerator(
+      var _ref30 = _asyncToGenerator(
       /*#__PURE__*/
-      regeneratorRuntime.mark(function _callee8(lang, allStrings) {
-        var oldLayerName, renameLayer, ext, elems;
-        return regeneratorRuntime.wrap(function _callee8$(_context8) {
+      regeneratorRuntime.mark(function _callee17(lang, allStrings) {
+        var _this = this;
+
+        var oldLayerName, renameLayer, elems;
+        return regeneratorRuntime.wrap(function _callee17$(_context17) {
           while (1) {
-            switch (_context8.prev = _context8.next) {
+            switch (_context17.prev = _context17.next) {
               case 0:
                 editor.langChanged = true;
                 $$b.pref('lang', lang);
                 $$b('#lang_select').val(lang);
 
                 if (allStrings) {
-                  _context8.next = 5;
+                  _context17.next = 5;
                   break;
                 }
 
-                return _context8.abrupt("return");
+                return _context17.abrupt("return");
 
               case 5:
                 $$b.extend(uiStrings$1, allStrings); // const notif = allStrings.notification; // Currently unused
@@ -34198,39 +35992,31 @@
 
 
                 if (!extsPreLang.length) {
-                  _context8.next = 21;
+                  _context17.next = 17;
                   break;
                 }
 
-              case 12:
-                if (!extsPreLang.length) {
-                  _context8.next = 19;
-                  break;
-                }
+                _context17.next = 14;
+                return Promise.all(extsPreLang.map(function (ext) {
+                  loadedExtensionNames.push(ext.name);
+                  return ext.langReady({
+                    lang: lang,
+                    uiStrings: uiStrings$1,
+                    importLocale: getImportLocale({
+                      defaultLang: lang,
+                      defaultName: ext.name
+                    })
+                  });
+                }));
 
-                ext = extsPreLang.shift();
-                loadedExtensionNames.push(ext.name);
-                _context8.next = 17;
-                return ext.langReady({
-                  lang: lang,
-                  uiStrings: uiStrings$1,
-                  importLocale: getImportLocale({
-                    defaultLang: lang,
-                    defaultName: ext.name
-                  })
-                });
+              case 14:
+                extsPreLang.length = 0;
+                _context17.next = 18;
+                break;
 
               case 17:
-                _context8.next = 12;
-                break;
-
-              case 19:
-                _context8.next = 22;
-                break;
-
-              case 21:
                 loadedExtensionNames.forEach(function (loadedExtensionName) {
-                  svgCanvas.runExtensions('langReady',
+                  _this.runExtension(loadedExtensionName, 'langReady',
                   /** @type {module:svgcanvas.SvgCanvas#event:ext-langReady} */
                   {
                     lang: lang,
@@ -34242,7 +36028,7 @@
                   });
                 });
 
-              case 22:
+              case 18:
                 svgCanvas.runExtensions('langChanged',
                 /** @type {module:svgcanvas.SvgCanvas#event:ext-langChanged} */
                 lang); // Update flyout tooltips
@@ -34263,16 +36049,16 @@
                   $$b('#tool_pos' + this.id.substr(10))[0].title = this.title;
                 });
 
-              case 27:
+              case 23:
               case "end":
-                return _context8.stop();
+                return _context17.stop();
             }
           }
-        }, _callee8, this);
+        }, _callee17, this);
       }));
 
-      return function (_x6, _x7) {
-        return _ref22.apply(this, arguments);
+      return function (_x7, _x8) {
+        return _ref30.apply(this, arguments);
       };
     }();
 
@@ -34322,47 +36108,134 @@
   };
   /**
   * @callback module:SVGEditor.ReadyCallback
-  * @returns {undefined}
+  * @returns {Promise|undefined}
   */
 
   /**
   * Queues a callback to be invoked when the editor is ready (or
   *   to be invoked immediately if it is already ready--i.e.,
-  *   if `svgEditor.runCallbacks` has been run).
+  *   if `runCallbacks` has been run).
   * @param {module:SVGEditor.ReadyCallback} cb Callback to be queued to invoke
-  * @returns {undefined}
+  * @returns {Promise} Resolves when all callbacks, including the supplied have resolved
   */
 
 
   editor.ready = function (cb) {
-    if (!isReady) {
-      callbacks.push(cb);
-    } else {
-      cb();
-    }
+    // eslint-disable-line promise/prefer-await-to-callbacks
+    return new Promise(function (resolve, reject) {
+      // eslint-disable-line promise/avoid-new
+      if (isReady) {
+        resolve(cb()); // eslint-disable-line callback-return, promise/prefer-await-to-callbacks
+
+        return;
+      }
+
+      callbacks.push([cb, resolve, reject]);
+    });
   };
   /**
   * Invokes the callbacks previous set by `svgEditor.ready`
-  * @returns {undefined}
+  * @returns {Promise} Resolves to `undefined` if all callbacks succeeded and rejects otherwise
   */
 
 
-  editor.runCallbacks = function () {
-    callbacks.forEach(function (cb) {
-      cb();
-    });
-    isReady = true;
-  };
+  editor.runCallbacks =
+  /*#__PURE__*/
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee20() {
+    return regeneratorRuntime.wrap(function _callee20$(_context20) {
+      while (1) {
+        switch (_context20.prev = _context20.next) {
+          case 0:
+            _context20.prev = 0;
+            _context20.next = 3;
+            return Promise.all(callbacks.map(function (_ref33) {
+              var _ref34 = _slicedToArray(_ref33, 1),
+                  cb = _ref34[0];
+
+              return cb(); // eslint-disable-line promise/prefer-await-to-callbacks
+            }));
+
+          case 3:
+            _context20.next = 9;
+            break;
+
+          case 5:
+            _context20.prev = 5;
+            _context20.t0 = _context20["catch"](0);
+            callbacks.forEach(function (_ref35) {
+              var _ref36 = _slicedToArray(_ref35, 3),
+                  reject = _ref36[2];
+
+              reject();
+            });
+            throw _context20.t0;
+
+          case 9:
+            callbacks.forEach(function (_ref37) {
+              var _ref38 = _slicedToArray(_ref37, 2),
+                  resolve = _ref38[1];
+
+              resolve();
+            });
+            isReady = true;
+
+          case 11:
+          case "end":
+            return _context20.stop();
+        }
+      }
+    }, _callee20, this, [[0, 5]]);
+  }));
   /**
   * @param {string} str The SVG string to load
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}]
+  * @param {boolean} [opts.noAlert=false] Option to avoid alert to user and instead get rejected promise
+  * @returns {Promise}
   */
 
-
   editor.loadFromString = function (str) {
-    editor.ready(function () {
-      loadSvgString(str);
-    });
+    var _ref39 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        noAlert = _ref39.noAlert;
+
+    editor.ready(
+    /*#__PURE__*/
+    _asyncToGenerator(
+    /*#__PURE__*/
+    regeneratorRuntime.mark(function _callee21() {
+      return regeneratorRuntime.wrap(function _callee21$(_context21) {
+        while (1) {
+          switch (_context21.prev = _context21.next) {
+            case 0:
+              _context21.prev = 0;
+              _context21.next = 3;
+              return loadSvgString(str, {
+                noAlert: noAlert
+              });
+
+            case 3:
+              _context21.next = 9;
+              break;
+
+            case 5:
+              _context21.prev = 5;
+              _context21.t0 = _context21["catch"](0);
+
+              if (!noAlert) {
+                _context21.next = 9;
+                break;
+              }
+
+              throw _context21.t0;
+
+            case 9:
+            case "end":
+              return _context21.stop();
+          }
+        }
+      }, _callee21, this, [[0, 5]]);
+    })));
   };
   /**
   * Not presently in use.
@@ -34384,52 +36257,70 @@
 
   /**
   * @param {string} url URL from which to load an SVG string via Ajax
-  * @param {PlainObject} [opts] May contain properties: `cache`, `callback`
-  * @param {boolean} opts.cache
-  * @param {module:SVGEditor.URLLoadCallback} opts.callback Invoked with `true` or `false` depending on success
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}] May contain properties: `cache`, `callback`
+  * @param {boolean} [opts.cache]
+  * @param {boolean} [opts.noAlert]
+  * @returns {Promise} Resolves to `undefined` or rejects upon bad loading of
+  *   the SVG (or upon failure to parse the loaded string) when `noAlert` is
+  *   enabled
   */
 
 
-  editor.loadFromURL = function (url, opts) {
-    if (!opts) {
-      opts = {};
-    }
+  editor.loadFromURL = function (url) {
+    var _ref41 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        cache = _ref41.cache,
+        noAlert = _ref41.noAlert;
 
-    var _opts = opts,
-        cache = _opts.cache,
-        cb = _opts.callback;
-    editor.ready(function () {
-      $$b.ajax({
-        url: url,
-        dataType: 'text',
-        cache: !!cache,
-        beforeSend: function beforeSend() {
-          $$b.process_cancel(uiStrings$1.notification.loadingImage);
-        },
-        success: function success(str) {
-          loadSvgString(str, cb);
-        },
-        error: function error(xhr, stat, err) {
-          if (xhr.status !== 404 && xhr.responseText) {
-            loadSvgString(xhr.responseText, cb);
-          } else {
-            $$b.alert(uiStrings$1.notification.URLloadFail + ': \n' + err, cb);
+    return editor.ready(function () {
+      return new Promise(function (resolve, reject) {
+        // eslint-disable-line promise/avoid-new
+        $$b.ajax({
+          url: url,
+          dataType: 'text',
+          cache: Boolean(cache),
+          beforeSend: function beforeSend() {
+            $$b.process_cancel(uiStrings$1.notification.loadingImage);
+          },
+          success: function success(str) {
+            resolve(loadSvgString(str, {
+              noAlert: noAlert
+            }));
+          },
+          error: function error(xhr, stat, err) {
+            if (xhr.status !== 404 && xhr.responseText) {
+              resolve(loadSvgString(xhr.responseText, {
+                noAlert: noAlert
+              }));
+              return;
+            }
+
+            if (noAlert) {
+              reject(new Error('URLLoadFail'));
+              return;
+            }
+
+            $$b.alert(uiStrings$1.notification.URLLoadFail + ': \n' + err);
+            resolve();
+          },
+          complete: function complete() {
+            $$b('#dialog_box').hide();
           }
-        },
-        complete: function complete() {
-          $$b('#dialog_box').hide();
-        }
+        });
       });
     });
   };
   /**
   * @param {string} str The Data URI to base64-decode (if relevant) and load
-  * @returns {undefined}
+  * @param {PlainObject} [opts={}]
+  * @param {boolean} [opts.noAlert]
+  * @returns {Promise} Resolves to `undefined` and rejects if loading SVG string fails and `noAlert` is enabled
   */
 
 
   editor.loadFromDataURI = function (str) {
+    var _ref42 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+        noAlert = _ref42.noAlert;
+
     editor.ready(function () {
       var base64 = false;
       var pre = str.match(/^data:image\/svg\+xml;base64,/);
@@ -34445,7 +36336,9 @@
       }
 
       var src = str.slice(pre.length);
-      loadSvgString(base64 ? decode64(src) : decodeURIComponent(src));
+      return loadSvgString(base64 ? decode64(src) : decodeURIComponent(src), {
+        noAlert: noAlert
+      });
     });
   };
   /**
@@ -34476,15 +36369,17 @@
   var extensionsAdded = false;
   var messageQueue = [];
   /**
-   * @param {Any} data
-   * @param {string} origin
+   * @param {PlainObject} info
+   * @param {Any} info.data
+   * @param {string} info.origin
    * @fires module:svgcanvas.SvgCanvas#event:message
    * @returns {undefined}
    */
 
-  var messageListener = function messageListener(_ref23) {
-    var data = _ref23.data,
-        origin = _ref23.origin;
+  var messageListener = function messageListener(_ref43) {
+    var data = _ref43.data,
+        origin = _ref43.origin;
+    // eslint-disable-line no-shadow
     // console.log('data, origin, extensionsAdded', data, origin, extensionsAdded);
     var messageObj = {
       data: data,
@@ -34503,10 +36398,34 @@
   window.addEventListener('message', messageListener); // Run init once DOM is loaded
   // jQuery(editor.init);
 
-  Promise.resolve().then(function () {
-    // We wait a micro-task to let the svgEditor variable be defined for module checks
-    editor.init();
-  });
+  _asyncToGenerator(
+  /*#__PURE__*/
+  regeneratorRuntime.mark(function _callee22() {
+    return regeneratorRuntime.wrap(function _callee22$(_context22) {
+      while (1) {
+        switch (_context22.prev = _context22.next) {
+          case 0:
+            _context22.prev = 0;
+            _context22.next = 3;
+            return Promise.resolve();
+
+          case 3:
+            editor.init();
+            _context22.next = 9;
+            break;
+
+          case 6:
+            _context22.prev = 6;
+            _context22.t0 = _context22["catch"](0);
+            console.error(_context22.t0); // eslint-disable-line no-console
+
+          case 9:
+          case "end":
+            return _context22.stop();
+        }
+      }
+    }, _callee22, this, [[0, 6]]);
+  }))();
 
   //  TO BUILD AN IIFE VERSION OF THIS FILE (AS CAN WORK ON OLDER BROWSERS),
   window.svgEditor = editor;
diff --git a/test/contextmenu_test.js b/test/contextmenu_test.js
index f2dc36d8..2aa6931a 100644
--- a/test/contextmenu_test.js
+++ b/test/contextmenu_test.js
@@ -30,14 +30,20 @@ QUnit.test('Test svgedit.contextmenu package', function (assert) {
 QUnit.test('Test svgedit.contextmenu does not add invalid menu item', function (assert) {
   assert.expect(3);
 
-  contextmenu.add({id: 'justanid'});
-  assert.ok(!contextmenu.hasCustomHandler('justanid'), 'menu item with just an id is invalid');
+  assert.throws(
+    () => contextmenu.add({id: 'justanid'}),
+    'menu item with just an id is invalid'
+  );
 
-  contextmenu.add({id: 'idandlabel', label: 'anicelabel'});
-  assert.ok(!contextmenu.hasCustomHandler('idandlabel'), 'menu item with just an id and label is invalid');
+  assert.throws(
+    () => contextmenu.add({id: 'idandlabel', label: 'anicelabel'}),
+    'menu item with just an id and label is invalid'
+  );
 
-  contextmenu.add({id: 'idandlabel', label: 'anicelabel', action: 'notafunction'});
-  assert.ok(!contextmenu.hasCustomHandler('idandlabel'), 'menu item with action that is not a function is invalid');
+  assert.throws(
+    () => contextmenu.add({id: 'idandlabel', label: 'anicelabel', action: 'notafunction'}),
+    'menu item with action that is not a function is invalid'
+  );
 });
 
 QUnit.test('Test svgedit.contextmenu adds valid menu item', function (assert) {
@@ -57,8 +63,11 @@ QUnit.test('Test svgedit.contextmenu rejects valid duplicate menu item id', func
   const validItem1 = {id: 'valid', label: 'anicelabel', action () { console.log('testing'); }};
   const validItem2 = {id: 'valid', label: 'anicelabel', action () { console.log('testingtwice'); }};
   contextmenu.add(validItem1);
-  contextmenu.add(validItem2);
 
-  assert.equal(contextmenu.getCustomHandler('valid'), validItem1.action, 'duplicate menu item is rejected.');
+  assert.throws(
+    () => contextmenu.add(validItem2),
+    'duplicate menu item is rejected.'
+  );
+
   tearDown();
 });
diff --git a/test/history_test.js b/test/history_test.js
index 5f9b1c6c..6f4edebe 100644
--- a/test/history_test.js
+++ b/test/history_test.js
@@ -317,7 +317,7 @@ QUnit.test('Test MoveElementCommand', function (assert) {
 
   setUp();
 
-  let move = new history.MoveElementCommand(div3, div1, divparent);
+  let move = new hstory.MoveElementCommand(div3, div1, divparent);
   assert.ok(move.unapply);
   assert.ok(move.apply);
   assert.equal(typeof move.unapply, typeof function () { /* */ });
diff --git a/test/qunit/qunit-assert-close.js b/test/qunit/qunit-assert-close.js
index c0dfe3b2..3f9ccfab 100644
--- a/test/qunit/qunit-assert-close.js
+++ b/test/qunit/qunit-assert-close.js
@@ -10,7 +10,7 @@
  * @param {string} [message] Defaults to structured message
  * @returns {undefined}
  */
-function close (actual, expected, maxDifference, message) { // eslint-disable-line no-shadow
+function close (actual, expected, maxDifference, message) {
   const actualDiff = (actual === expected) ? 0 : Math.abs(actual - expected),
     result = actualDiff <= maxDifference;
   message = message || (actual + ' should be within ' + maxDifference + ' (inclusive) of ' + expected + (result ? '' : '. Actual: ' + actualDiff));
@@ -21,7 +21,7 @@ function close (actual, expected, maxDifference, message) { // eslint-disable-li
  * Checks that the first two arguments are equal, or are numbers close enough to be considered equal
  * based on a specified maximum allowable difference percentage.
  *
- * @example assert.close.percent(155, 150, 3.4);  // Difference is ~3.33%
+ * @example assert.close.percent(155, 150, 3.4); // Difference is ~3.33%
  *
  * @param {Float} actual
  * @param {Float} expected
@@ -70,7 +70,7 @@ function notClose (actual, expected, minDifference, message) {
  * Checks that the first two arguments are numbers with differences greater than the specified
  * minimum difference percentage.
  *
- * @example assert.notClose.percent(156, 150, 3.5);  // Difference is 4.0%
+ * @example assert.notClose.percent(156, 150, 3.5); // Difference is 4.0%
  *
  * @param {Float} actual
  * @param {Float} expected