+++ /dev/null
-/*\r
-Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.\r
-For licensing, see LICENSE.html or http://ckeditor.com/license\r
-*/\r
-\r
-/**\r
- * @fileOverview Defines the {@link CKEDITOR.scriptLoader} object, used to load scripts\r
- * asynchronously.\r
- */\r
-\r
-/**\r
- * Load scripts asynchronously.\r
- * @namespace\r
- * @example\r
- */\r
-CKEDITOR.scriptLoader = (function()\r
-{\r
- var uniqueScripts = {},\r
- waitingList = {};\r
-\r
- return /** @lends CKEDITOR.scriptLoader */ {\r
- /**\r
- * Loads one or more external script checking if not already loaded\r
- * previously by this function.\r
- * @param {String|Array} scriptUrl One or more URLs pointing to the\r
- * scripts to be loaded.\r
- * @param {Function} [callback] A function to be called when the script\r
- * is loaded and executed. If a string is passed to "scriptUrl", a\r
- * boolean parameter is passed to the callback, indicating the\r
- * success of the load. If an array is passed instead, two array\r
- * parameters are passed to the callback; the first contains the\r
- * URLs that have been properly loaded, and the second the failed\r
- * ones.\r
- * @param {Object} [scope] The scope ("this" reference) to be used for\r
- * the callback call. Default to {@link CKEDITOR}.\r
- * @param {Boolean} [showBusy] Changes the cursor of the document while\r
-+ * the script is loaded.\r
- * @example\r
- * CKEDITOR.scriptLoader.load( '/myscript.js' );\r
- * @example\r
- * CKEDITOR.scriptLoader.load( '/myscript.js', function( success )\r
- * {\r
- * // Alerts "true" if the script has been properly loaded.\r
- * // HTTP error 404 should return "false".\r
- * alert( success );\r
- * });\r
- * @example\r
- * CKEDITOR.scriptLoader.load( [ '/myscript1.js', '/myscript2.js' ], function( completed, failed )\r
- * {\r
- * alert( 'Number of scripts loaded: ' + completed.length );\r
- * alert( 'Number of failures: ' + failed.length );\r
- * });\r
- */\r
- load : function( scriptUrl, callback, scope, showBusy )\r
- {\r
- var isString = ( typeof scriptUrl == 'string' );\r
-\r
- if ( isString )\r
- scriptUrl = [ scriptUrl ];\r
-\r
- if ( !scope )\r
- scope = CKEDITOR;\r
-\r
- var scriptCount = scriptUrl.length,\r
- completed = [],\r
- failed = [];\r
-\r
- var doCallback = function( success )\r
- {\r
- if ( callback )\r
- {\r
- if ( isString )\r
- callback.call( scope, success );\r
- else\r
- callback.call( scope, completed, failed );\r
- }\r
- };\r
-\r
- if ( scriptCount === 0 )\r
- {\r
- doCallback( true );\r
- return;\r
- }\r
-\r
- var checkLoaded = function( url, success )\r
- {\r
- ( success ? completed : failed ).push( url );\r
-\r
- if ( --scriptCount <= 0 )\r
- {\r
- showBusy && CKEDITOR.document.getDocumentElement().removeStyle( 'cursor' );\r
- doCallback( success );\r
- }\r
- };\r
-\r
- var onLoad = function( url, success )\r
- {\r
- // Mark this script as loaded.\r
- uniqueScripts[ url ] = 1;\r
-\r
- // Get the list of callback checks waiting for this file.\r
- var waitingInfo = waitingList[ url ];\r
- delete waitingList[ url ];\r
-\r
- // Check all callbacks waiting for this file.\r
- for ( var i = 0 ; i < waitingInfo.length ; i++ )\r
- waitingInfo[ i ]( url, success );\r
- };\r
-\r
- var loadScript = function( url )\r
- {\r
- if ( uniqueScripts[ url ] )\r
- {\r
- checkLoaded( url, true );\r
- return;\r
- }\r
-\r
- var waitingInfo = waitingList[ url ] || ( waitingList[ url ] = [] );\r
- waitingInfo.push( checkLoaded );\r
-\r
- // Load it only for the first request.\r
- if ( waitingInfo.length > 1 )\r
- return;\r
-\r
- // Create the <script> element.\r
- var script = new CKEDITOR.dom.element( 'script' );\r
- script.setAttributes( {\r
- type : 'text/javascript',\r
- src : url } );\r
-\r
- if ( callback )\r
- {\r
- if ( CKEDITOR.env.ie )\r
- {\r
- // FIXME: For IE, we are not able to return false on error (like 404).\r
-\r
- /** @ignore */\r
- script.$.onreadystatechange = function ()\r
- {\r
- if ( script.$.readyState == 'loaded' || script.$.readyState == 'complete' )\r
- {\r
- script.$.onreadystatechange = null;\r
- onLoad( url, true );\r
- }\r
- };\r
- }\r
- else\r
- {\r
- /** @ignore */\r
- script.$.onload = function()\r
- {\r
- // Some browsers, such as Safari, may call the onLoad function\r
- // immediately. Which will break the loading sequence. (#3661)\r
- setTimeout( function() { onLoad( url, true ); }, 0 );\r
- };\r
-\r
- // FIXME: Opera and Safari will not fire onerror.\r
-\r
- /** @ignore */\r
- script.$.onerror = function()\r
- {\r
- onLoad( url, false );\r
- };\r
- }\r
- }\r
-\r
- // Append it to <head>.\r
- script.appendTo( CKEDITOR.document.getHead() );\r
-\r
- CKEDITOR.fire( 'download', url ); // @Packager.RemoveLine\r
- };\r
-\r
- showBusy && CKEDITOR.document.getDocumentElement().setStyle( 'cursor', 'wait' );\r
- for ( var i = 0 ; i < scriptCount ; i++ )\r
- {\r
- loadScript( scriptUrl[ i ] );\r
- }\r
- }\r
- };\r
-})();\r
Got questions, comments, patches, etc.? Contact Jason Woofenden