67 lines
2.6 KiB
JavaScript
67 lines
2.6 KiB
JavaScript
/* eslint-disable no-var */
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/* globals $, svgEditor */
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/**
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* Package: svgedit.contextmenu
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*
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* Licensed under the Apache License, Version 2
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*
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* Author: Adam Bender
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*/
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// Dependencies:
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// 1) jQuery (for dom injection of context menus)
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var svgedit = svgedit || {}; // eslint-disable-line no-use-before-define
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(function () {
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var self = this;
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if (!svgedit.contextmenu) {
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svgedit.contextmenu = {};
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}
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self.contextMenuExtensions = {};
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var menuItemIsValid = function (menuItem) {
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return menuItem && menuItem.id && menuItem.label && menuItem.action && typeof menuItem.action === 'function';
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};
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var addContextMenuItem = function (menuItem) {
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// menuItem: {id, label, shortcut, action}
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if (!menuItemIsValid(menuItem)) {
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console.error('Menu items must be defined and have at least properties: id, label, action, where action must be a function');
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return;
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}
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if (menuItem.id in self.contextMenuExtensions) {
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console.error('Cannot add extension "' + menuItem.id + '", an extension by that name already exists"');
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return;
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}
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// Register menuItem action, see below for deferred menu dom injection
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console.log('Registed contextmenu item: {id:' + menuItem.id + ', label:' + menuItem.label + '}');
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self.contextMenuExtensions[menuItem.id] = menuItem;
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// TODO: Need to consider how to handle custom enable/disable behavior
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};
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var hasCustomHandler = function (handlerKey) {
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return self.contextMenuExtensions[handlerKey] && true;
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};
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var getCustomHandler = function (handlerKey) {
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return self.contextMenuExtensions[handlerKey].action;
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};
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var injectExtendedContextMenuItemIntoDom = function (menuItem) {
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if (Object.keys(self.contextMenuExtensions).length === 0) {
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// all menuItems appear at the bottom of the menu in their own container.
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// if this is the first extension menu we need to add the separator.
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$('#cmenu_canvas').append("<li class='separator'>");
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}
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var shortcut = menuItem.shortcut || '';
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$('#cmenu_canvas').append("<li class='disabled'><a href='#" + menuItem.id + "'>" +
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menuItem.label + "<span class='shortcut'>" +
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shortcut + '</span></a></li>');
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};
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// Defer injection to wait out initial menu processing. This probably goes away once all context
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// menu behavior is brought here.
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svgEditor.ready(function () {
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var menuItem;
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for (menuItem in self.contextMenuExtensions) {
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injectExtendedContextMenuItemIntoDom(self.contextMenuExtensions[menuItem]);
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}
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});
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svgedit.contextmenu.resetCustomMenus = function () { self.contextMenuExtensions = {}; };
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svgedit.contextmenu.add = addContextMenuItem;
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svgedit.contextmenu.hasCustomHandler = hasCustomHandler;
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svgedit.contextmenu.getCustomHandler = getCustomHandler;
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}());
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