{"version":3,"file":"svgcanvas-iife.min.js","sources":["../editor/jQuery.attr.js","../editor/svgpathseg.js","../editor/namespaces.js","../editor/browser.js","../editor/svgtransformlist.js","../editor/units.js","../editor/history.js","../editor/path.js","../editor/math.js","../editor/utilities.js","../editor/layer.js","../editor/historyrecording.js","../editor/draw.js","../editor/sanitize.js","../editor/external/dynamic-import-polyfill/importModule.js","../editor/coords.js","../editor/recalculate.js","../editor/select.js","../editor/svgcanvas.js","../editor/dbox.js"],"sourcesContent":["/**\n * A 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","/* 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 *= 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    // STATIC\n    static _pathSegArrayAsString (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\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  // 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    // TODO: 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","/**\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 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);\nconst isSVGTransform = (o) => {\n  // https://developer.mozilla.org/en-US/docs/Web/API/SVGTransform\n  return o && typeof o === 'object' && typeof o.setMatrix === 'function' && 'angle' in o;\n};\nreturn isSVGTransform(r1) && isSVGTransform(t1) &&\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 {void}\n*/\nexport const disableSupportsNativeTransformLists = () => {\n  supportsNativeSVGTransformLists_ = false;\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 {void}\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  * @returns {SVGTransformList}\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      // const re = /\\s*(?<xform>(?: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, '$1 -');\n          const valArr = valBits[1].split(/[, ]+/);\n          const letters = 'abcdef'.split('');\n          /*\n        if (m && m.groups.xform) {\n          const x = m.groups.xform;\n          const [name, bits] = x.split(/\\s*\\(/);\n          const valBits = bits.match(/\\s*(?<nonWhitespace>.*?)\\s*\\)/);\n          valBits.groups.nonWhitespace = valBits.groups.nonWhitespace.replace(\n            /(?<digit>\\d)-/g, '$<digit> -'\n          );\n          const valArr = valBits.groups.nonWhitespace.split(/[, ]+/);\n          const letters = [...'abcdef'];\n          */\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 {void}\n  */\n  clear () {\n    this.numberOfItems = 0;\n    this._xforms = [];\n  }\n\n  /**\n  * @param {SVGTransform} newItem\n  * @returns {void}\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 {void}\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 {void}\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* @returns {void}\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 {void}\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 {void}\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 {void}\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 {void}\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} handler\n * @fires module:history~Command#event:history\n * @returns {void|true}\n */\n/**\n *\n * Unapplies.\n * @function module:history.HistoryCommand#unapply\n * @param {module:history.HistoryEventHandler} handler\n * @fires module:history~Command#event:history\n * @returns {void|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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\n  */\n  addCommandToHistory (cmd) {\n    // TODO: 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 {void}\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","/* 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 {void}\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 {void}\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. An `id` should be set so that {@link module:utilities.EditorContext#addSVGElementFromJson} can later re-identify the element for modification or replacement.\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 {void}\n */\n/**\n * @function module:path.EditorContext#resetD\n * @param {SVGPathElement} p\n * @returns {void}\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 {void}\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 {void}\n*/\n/**\n * @function module:path.EditorContext#addCommandToHistory\n * @param {Command} cmd\n * @returns {void}\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 {void}\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 {void}\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 {void}\n */\n/**\n * @function module:path.EditorContext#endChanges\n * @param {PlainObject} cfg\n * @param {string} cfg.cmd\n * @param {Element} cfg.elem\n * @returns {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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(\n      this.type,\n      this.index,\n      // type 10 means ARC\n      this.type === 10 ? ptObjToArr(this.type, item) : curPts\n    );\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 {void}\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 {void}\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 {void}\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|void} Will stop execution of `eachSeg` if returns `false`\n  */\n  /**\n  * @param {module:path.PathEachSegCallback} fn\n  * @returns {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\n  */\n  storeD () {\n    this.last_d = this.elem.getAttribute('d');\n  }\n\n  /**\n  * @param {Integer} y\n  * @returns {Path}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\n  */\n  addPtsToSelection (indexes) {\n    if (!Array.isArray(indexes)) { indexes = [indexes]; }\n    indexes.forEach((index) => {\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  // STATIC\n  /**\n  * @param {Integer} index\n  * @returns {boolean}\n  */\n  static subpathIsClosed (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/**\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 {void}\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 {void}\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 {void}\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 {void}\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          x1: (pt1.x - bb.x) / bb.width,\n          y1: (pt1.y - bb.y) / bb.height,\n          x2: (pt2.x - bb.x) / bb.width,\n          y2: (pt2.y - bb.y) / bb.height\n        };\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    // eslint-disable-next-line sonarjs/no-duplicated-branches\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/* eslint-disable jsdoc/require-property */\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  /* eslint-enable jsdoc/require-property */\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|void}\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 {void}\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|void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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|void}\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 {void}\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 {void}\n    */\n    linkControlPoints (linkPoints) {\n      setLinkControlPoints(linkPoints);\n    },\n    /**\n    * @returns {void}\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 {void}\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 {void}\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    /* eslint-disable jsdoc/require-returns */\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    /* eslint-enable jsdoc/require-returns */\n    /**\n    * @param {?Integer} v See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}\n    * @returns {void}\n    */\n    setSegType (v) {\n      path.setSegType(v);\n    },\n    /**\n    * @param {string} attr\n    * @param {Float} newValue\n    * @returns {void}\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 {void}\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    /* eslint-disable jsdoc/require-returns */\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    /* eslint-enable jsdoc/require-returns */\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';\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 * 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. An `id` should be set so that {@link module:utilities.EditorContext#addSVGElementFromJson} can later re-identify the element for modification or replacement.\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 {void}\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.dropXMLInternalSubset\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 dropXMLInternalSubset = (str) => {\n  return str.replace(/(<!DOCTYPE\\s+\\w*\\s*\\[).*(\\?]>)/, '$1$2');\n  // return str.replace(/(?<doctypeOpen><!DOCTYPE\\s+\\w*\\s*\\[).*(?<doctypeClose>\\?\\]>)/, '$<doctypeOpen>$<doctypeClose>');\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-z\\d+/=]/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  /*\n  const [prefix, suffix] = dataurl.split(','),\n    {groups: {mime}} = prefix.match(/:(?<mime>.*?);/),\n    bstr = atob(suffix);\n  */\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 {void}\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 {void}\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 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 {void}\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 {void}\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 1 - (t ** 3) * P0[j] +\n        3 * 1 - (t ** 2) * t * P1[j] +\n        3 * (1 - t) * (t ** 2) * P2[j] +\n        (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 = (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 {x, y, width, height} = ret;\n        const bb = {\n          width,\n          height,\n          x: x + parseFloat(selected.getAttribute('x') || 0),\n          y: y + parseFloat(selected.getAttribute('y') || 0)\n        };\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 {void}\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 {void}\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  // Originally from: http://phpjs.org/functions\n  return String(str).replace(/[.\\\\+*?[^\\]$(){}=!<>|:-]/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 {void}\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 {void}\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 * 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 * const l1 = new Layer('name', group);          // Use the existing group for this layer.\n * const l2 = new Layer('name', group, svgElem); // Create a new group and add it to the DOM after group.\n * const l3 = 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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\n   */\n  appendChildren (children) {\n    for (const child of children) {\n      this.group_.append(child);\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 {void}\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|void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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    children.forEach((child) => {\n      if (child.localName === 'title') { return; }\n      group.append(this.copyElem(child));\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\n */\n/**\n * @function module:draw.DrawCanvasInit#addCommandToHistory\n * @param {Command} cmd\n * @returns {void}\n*/\n/**\n * @function module:draw.DrawCanvasInit#changeSVGContent\n * @returns {void}\n */\n\nlet canvas_;\n/**\n* @function module:draw.init\n* @param {module:draw.DrawCanvasInit} canvas\n* @returns {void}\n*/\nexport const init = function (canvas) {\n  canvas_ = canvas;\n};\n\n/**\n* Updates layer system.\n* @function module:draw.identifyLayers\n* @returns {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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// Todo: Split out into core attributes, presentation attributes, etc. so consistent\n/**\n * This defines which elements and attributes that we support (or at least\n * don't remove).\n * @type {PlainObject}\n */\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  feMorphology: ['class', 'in', 'operator', 'radius'],\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 {void}\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, '$1 -');\n          // const val = attr.value.replace(/(?<digit>\\d)-/g, '$<digit> -');\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    // TODO: 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","/* eslint-disable jsdoc/require-file-overview */\n/**\n * Adapted from {@link https://github.com/uupaa/dynamic-import-polyfill/blob/master/importModule.js}.\n * @module importModule\n * @license MIT\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 {void}\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/**\n* @function module:importModule.importSetGlobalDefault\n* @param {string|GenericArray<any>} url\n* @param {module:importModule.ImportConfig} config\n* @returns {Promise<any>} 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<ArbitraryModule>} 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 *\n * @author Brett Zamir (other items are from `dynamic-import-polyfill`)\n * @param {string|string[]} url\n * @param {PlainObject} [atts={}]\n * @returns {Promise<void|Error>} 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    /**\n     *\n     * @returns {void}\n     */\n    function scriptOnError () {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    }\n    /**\n     *\n     * @returns {void}\n     */\n    function scriptOnLoad () {\n      resolve();\n      destructor();\n    }\n    const destructor = () => {\n      script.removeEventListener('error', scriptOnError);\n      script.removeEventListener('load', scriptOnLoad);\n      script.remove();\n      script.src = '';\n    };\n    script.defer = 'defer';\n    addScriptAtts(script, atts);\n    script.addEventListener('error', scriptOnError);\n    script.addEventListener('load', scriptOnLoad);\n    script.src = url;\n\n    document.head.append(script);\n  });\n}\n\n/**\n*\n* @param {string|string[]} url\n* @param {PlainObject} [atts={}]\n* @param {PlainObject} opts\n* @param {boolean} [opts.returnDefault=false} = {}]\n* @returns {Promise<any>} Resolves to value of loading module or rejects with\n*   `Error` upon a script loading error.\n*/\nexport function importModule (url, atts = {}, {returnDefault = false} = {}) {\n  if (Array.isArray(url)) {\n    return Promise.all(url.map((u) => {\n      return importModule(u, atts);\n    }));\n  }\n  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new\n    const vector = '$importModule$' + Math.random().toString(32).slice(2);\n    const script = document.createElement('script');\n    /**\n     *\n     * @returns {void}\n     */\n    function scriptOnError () {\n      reject(new Error(`Failed to import: ${url}`));\n      destructor();\n    }\n    /**\n     *\n     * @returns {void}\n     */\n    function scriptOnLoad () {\n      resolve(window[vector]);\n      destructor();\n    }\n    const destructor = () => {\n      delete window[vector];\n      script.removeEventListener('error', scriptOnError);\n      script.removeEventListener('load', scriptOnLoad);\n      script.remove();\n      URL.revokeObjectURL(script.src);\n      script.src = '';\n    };\n    addScriptAtts(script, atts);\n    script.defer = 'defer';\n    script.type = 'module';\n    script.addEventListener('error', scriptOnError);\n    script.addEventListener('load', scriptOnLoad);\n    const absURL = toAbsoluteURL(url);\n    const loader = `import * as m from '${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 * 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:svgcanvas.SvgCanvas#event:pointsAdded} editorContext\n* @returns {void}\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 * @name module:coords.remapElement\n * @type {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","/* 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 {void}\n */\n\n/**\n* @function module:recalculate.init\n* @param {module:recalculate.EditorContext} editorContext\n* @returns {void}\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 {void}\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        // TODO: 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    // TODO: 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        // TODO: 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 {void}\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 {void}\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 {void}\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  // STATIC methods\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 {void}\n  */\n  static updateGripCursors (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/**\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 {void}\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 {void}\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} The current zoom level\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 {void}\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","/* eslint-disable indent, unicorn/no-fn-reference-in-iterator */\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\n// eslint-disable-next-line no-duplicate-imports\nimport {\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, dropXMLInternalSubset,\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// Reenable after fixing eslint-plugin-jsdoc to handle\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 {void}\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 {void}\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* @name module:svgcanvas.SvgCanvas#getCurrentDrawing\n* @type {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* @name module:svgcanvas.SvgCanvas#addSVGElementFromJson\n* @type {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* @type {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* @type {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* @name module:svgcanvas.SvgCanvas#getSelectedElements\n* @type {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* @type {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* @type {module:coords.EditorContext#getGridSnapping|module:path.EditorContext#getGridSnapping}\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 {void}\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* @name module:svgcanvas~addCommandToHistory\n* @type {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* @name module:svgcanvas.SvgCanvas#getZoom\n* @type {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* @name module:svgcanvas.SvgCanvas#round\n* @type {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* @name module:svgcanvas.SvgCanvas#getNextId\n* @type {module:path.EditorContext#getNextId}\n*/\nconst getNextId = canvas.getNextId = function () {\n  return getCurrentDrawing().getNextId();\n};\n\n/**\n* @name module:svgcanvas.SvgCanvas#getId\n* @type {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* @name module:svgcanvas.SvgCanvas#call\n* @type {module:draw.DrawCanvasInit#call|module:path.EditorContext#call}\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* @name module:svgcanvas.SvgCanvas#clearSelection\n* @type {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* @name module:svgcanvas.SvgCanvas#addToSelection\n* @type {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* @type {module:path.EditorContext#getOpacity}\n*/\nconst getOpacity = function () {\n  return curShape.opacity;\n};\n\n/**\n* @name module:svgcanvas.SvgCanvas#getMouseTarget\n* @type {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* @type {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 {void}\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 {void}\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[]|void} 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 {void|module:svgcanvas.ExtensionMouseDownStatus}\n */\n/**\n * @function module:svgcanvas.ExtensionInitResponse#mouseMove\n * @param {module:svgcanvas.SvgCanvas#event:ext_mouseMove} arg\n * @returns {void}\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 {void}\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 {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#toolButtonStateUpdate\n * @param {module:svgcanvas.SvgCanvas#event:ext_toolButtonStateUpdate} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#selectedChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext_selectedChanged} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementTransition\n * @param {module:svgcanvas.SvgCanvas#event:ext_elementTransition} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#elementChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext_elementChanged} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langReady\n * @param {module:svgcanvas.SvgCanvas#event:ext_langReady} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#langChanged\n * @param {module:svgcanvas.SvgCanvas#event:ext_langChanged} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#addLangData\n * @param {module:svgcanvas.SvgCanvas#event:ext_addLangData} arg\n * @returns {Promise<module:locale.ExtensionLocaleData>} 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 {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#workareaResized\n * @param {module:svgcanvas.SvgCanvas#event:ext_workareaResized} arg\n * @returns {void}\n*/\n/**\n * @function module:svgcanvas.ExtensionInitResponse#callback\n * @this module:SVGEditor\n * @param {module:svgcanvas.SvgCanvas#event:ext_callback} arg\n * @returns {void}\n*/\n\n/**\n* @callback module:svgcanvas.ExtensionInitCallback\n* @this module:SVGEditor\n* @param {module:svgcanvas.ExtensionArgumentObject} arg\n* @returns {Promise<module:svgcanvas.ExtensionInitResponse|void>} Resolves to [ExtensionInitResponse]{@link module:svgcanvas.ExtensionInitResponse} or `undefined`\n*/\n/**\n* @typedef {PlainObject} module:svgcanvas.ExtensionInitArgs\n* @property {external:jQuery} $\n* @property {module:SVGEditor~ImportLocale} importLocale\n*/\n/**\n* Add an extension to the editor.\n* @function module:svgcanvas.SvgCanvas#addExtension\n* @param {string} name - String with the ID of the extension. Used internally; no need for i18n.\n* @param {module:svgcanvas.ExtensionInitCallback} [extInitFunc] - Function supplied by the extension with its data\n* @param {module:svgcanvas.ExtensionInitArgs} initArgs\n* @fires module:svgcanvas.SvgCanvas#event:extension_added\n* @throws {TypeError|Error} `TypeError` if `extInitFunc` is not a function, `Error`\n*   if extension of supplied name already exists\n* @returns {Promise<void>} Resolves to `undefined`\n*/\nthis.addExtension = async function (name, extInitFunc, {$: jq, 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    $: jq,\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 {void}\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|void}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:extensions_added\n * @type {void}\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 {void}\n */\n/**\n * @event module:svgcanvas.SvgCanvas#event:zoomDone\n * @type {void}\n*/\n/**\n * @event module:svgcanvas.SvgCanvas#event:cleared\n * @type {void}\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|void}\n */\n\n/**\n * The promise return, if present, resolves to `undefined`\n *  (`extension_added`, `exported`, `saved`).\n * @typedef {Promise<void>|void} 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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 (const selectedElement of selectedElements) {\n          if (isNullish(selectedElement)) { continue; }\n          const slist = getTransformList(selectedElement);\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    // TODO: 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 {void}\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 {void}\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.includes(',', commaIndex + 1);\n    } else {\n      keep = coords.includes(' ', coords.indexOf(' ') + 1);\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 {void}\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/* eslint-disable jsdoc/require-property */\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 () {\n/* eslint-enable jsdoc/require-property */\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\n */\nfunction selectAll (evt) {\n  setSelection(0, curtext.textContent.length);\n  $(this).unbind(evt);\n}\n\n/**\n *\n * @param {Event} evt\n * @returns {void}\n */\nfunction selectWord (evt) {\n  if (!allowDbl || !curtext) { return; }\n\n  const ept = transformPoint(evt.pageX, evt.pageY, rootSctm),\n    mouseX = ept.x * currentZoom,\n    mouseY = ept.y * currentZoom;\n  const pt = screenToPt(mouseX, mouseY);\n\n  const index = getIndexFromPoint(pt.x, pt.y);\n  const str = curtext.textContent;\n  const first = str.substr(0, index).replace(/[a-z\\d]+$/i, '').length;\n  const m = str.substr(index).match(/^[a-z\\d]+/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 {void}\n  */\n  select (target, x, y) {\n    curtext = target;\n    textActions.toEditMode(x, y);\n  },\n  /**\n  * @param {Element} elem\n  * @returns {void}\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 {void}\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 {void}\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 {void}\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 {void}\n  */\n  setCursor,\n  /**\n  * @param {Float} x\n  * @param {Float} y\n  * @returns {void}\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 {void}\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 {void}\n  */\n  setInputElem (elem) {\n    textinput = elem;\n    // $(textinput).blur(hideCursor);\n  },\n  /**\n  * @returns {void}\n  */\n  clear () {\n    if (currentMode === 'textedit') {\n      textActions.toSelectMode();\n    }\n  },\n  /**\n  * @param {Element} inputElem Not in use\n  * @returns {void}\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 = [...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 {void}\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<string|false>} Resolves to a 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 {void}\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 {void}\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 {void}\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<module:svgcanvas.ImageExportedResults>} 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 {void}\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 {void|\"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<module:svgcanvas.PDFExportedResults>} 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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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          // const m = val.match(/svgedit_url=(?<url>.*?);/);\n          if (m) {\n            const url = decodeURIComponent(m[1]);\n            // const url = decodeURIComponent(m.groups.url);\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 (const attr of attrs) { // Ok for `NamedNodeMap`\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 {void}\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 {void}\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 {void}\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 {void}\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|void} 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 (const child of childs) {\n    if (child.nodeName === 'title') {\n      return child.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 {void}\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|void} 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 {void}\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 (const child of childs) {\n    if (child.nodeName === 'title') {\n      docTitle = child;\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|void}\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 {void}\n */\n/**\n * Called when sidepanel is resized or toggled.\n * @event module:svgcanvas.SvgCanvas#event:ext_workareaResized\n * @type {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void}\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 {void|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 {void}\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: 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 {void}\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 {void}\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 {void}\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 {void}\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\"|void} type\n* @param {Integer|void} x Expected if type is \"point\"\n* @param {Integer|void} y Expected if type is \"point\"\n* @fires module:svgcanvas.SvgCanvas#event:changed\n* @fires module:svgcanvas.SvgCanvas#event:ext_IDsUpdated\n* @returns {void}\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 {void}\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 {void}\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|void}\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 {void}\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 = anchor.before(elem);\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 {void}\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 {void}\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 {void}\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|void} 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 {void}\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 {void}\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 {void}\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 {void}\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.dropXMLInternalSubset} dropXMLInternalSubset\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    dropXMLInternalSubset,\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 * @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  * @typedef {PlainObject} module:jQueryPluginDBox.PromiseResultObject\n  * @property {string|true} response\n  * @property {boolean} checked\n  */\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<boolean|string|module:jQueryPluginDBox.PromiseResultObject>} module:jQueryPluginDBox.ResultPromise\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 {void}\n   */\n  /**\n   * Creates a dialog of the specified type with a given message\n   *  and any defaults and type-specific metadata. Returns a `Promise`\n   *  which resolves differently depending on whether the dialog\n   *  was cancelled or okayed (with the response and any checked state).\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.ResultPromise}\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\" data-ok=\"\" 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 = $(`<select aria-label=\"${msg}\">`).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 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