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Diffstat (limited to 'core/scriptloader.js')
| -rw-r--r-- | core/scriptloader.js | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/core/scriptloader.js b/core/scriptloader.js deleted file mode 100644 index 28e0f27..0000000 --- a/core/scriptloader.js +++ /dev/null @@ -1,202 +0,0 @@ -/** - * @license Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved. - * For licensing, see LICENSE.html or http://ckeditor.com/license - */ - -/** - * @fileOverview Defines the {@link CKEDITOR.scriptLoader} object, used to load scripts - * asynchronously. - */ - -/** - * Load scripts asynchronously. - * - * @class - * @singleton - */ -CKEDITOR.scriptLoader = (function() { - var uniqueScripts = {}, - waitingList = {}; - - return { - /** - * Loads one or more external script checking if not already loaded - * previously by this function. - * - * CKEDITOR.scriptLoader.load( '/myscript.js' ); - * - * CKEDITOR.scriptLoader.load( '/myscript.js', function( success ) { - * // Alerts true if the script has been properly loaded. - * // HTTP error 404 should return false. - * alert( success ); - * } ); - * - * CKEDITOR.scriptLoader.load( [ '/myscript1.js', '/myscript2.js' ], function( completed, failed ) { - * alert( 'Number of scripts loaded: ' + completed.length ); - * alert( 'Number of failures: ' + failed.length ); - * } ); - * - * @param {String/Array} scriptUrl One or more URLs pointing to the - * scripts to be loaded. - * @param {Function} [callback] A function to be called when the script - * is loaded and executed. If a string is passed to `scriptUrl`, a - * boolean parameter is passed to the callback, indicating the - * success of the load. If an array is passed instead, two arrays - * parameters are passed to the callback - the first contains the - * URLs that have been properly loaded and the second the failed ones. - * @param {Object} [scope] The scope (`this` reference) to be used for - * the callback call. Defaults to {@link CKEDITOR}. - * @param {Boolean} [showBusy] Changes the cursor of the document while - * the script is loaded. - */ - load: function( scriptUrl, callback, scope, showBusy ) { - var isString = ( typeof scriptUrl == 'string' ); - - if ( isString ) - scriptUrl = [ scriptUrl ]; - - if ( !scope ) - scope = CKEDITOR; - - var scriptCount = scriptUrl.length, - completed = [], - failed = []; - - var doCallback = function( success ) { - if ( callback ) { - if ( isString ) - callback.call( scope, success ); - else - callback.call( scope, completed, failed ); - } - }; - - if ( scriptCount === 0 ) { - doCallback( true ); - return; - } - - var checkLoaded = function( url, success ) { - ( success ? completed : failed ).push( url ); - - if ( --scriptCount <= 0 ) { - showBusy && CKEDITOR.document.getDocumentElement().removeStyle( 'cursor' ); - doCallback( success ); - } - }; - - var onLoad = function( url, success ) { - // Mark this script as loaded. - uniqueScripts[ url ] = 1; - - // Get the list of callback checks waiting for this file. - var waitingInfo = waitingList[ url ]; - delete waitingList[ url ]; - - // Check all callbacks waiting for this file. - for ( var i = 0; i < waitingInfo.length; i++ ) - waitingInfo[ i ]( url, success ); - }; - - var loadScript = function( url ) { - if ( uniqueScripts[ url ] ) { - checkLoaded( url, true ); - return; - } - - var waitingInfo = waitingList[ url ] || ( waitingList[ url ] = [] ); - waitingInfo.push( checkLoaded ); - - // Load it only for the first request. - if ( waitingInfo.length > 1 ) - return; - - // Create the <script> element. - var script = new CKEDITOR.dom.element( 'script' ); - script.setAttributes({ - type: 'text/javascript', - src: url } ); - - if ( callback ) { - if ( CKEDITOR.env.ie ) { - // FIXME: For IE, we are not able to return false on error (like 404). - script.$.onreadystatechange = function() { - if ( script.$.readyState == 'loaded' || script.$.readyState == 'complete' ) { - script.$.onreadystatechange = null; - onLoad( url, true ); - } - }; - } else { - script.$.onload = function() { - // Some browsers, such as Safari, may call the onLoad function - // immediately. Which will break the loading sequence. (#3661) - setTimeout( function() { - onLoad( url, true ); - }, 0 ); - }; - - // FIXME: Opera and Safari will not fire onerror. - script.$.onerror = function() { - onLoad( url, false ); - }; - } - } - - // Append it to <head>. - script.appendTo( CKEDITOR.document.getHead() ); - - CKEDITOR.fire( 'download', url ); // %REMOVE_LINE% - }; - - showBusy && CKEDITOR.document.getDocumentElement().setStyle( 'cursor', 'wait' ); - for ( var i = 0; i < scriptCount; i++ ) { - loadScript( scriptUrl[ i ] ); - } - }, - - /** - * Loads a script in a queue, so only one is loaded at the same time. - * - * @since 4.1.2 - * @param {String} scriptUrl URL pointing to the script to be loaded. - * @param {Function} [callback] A function to be called when the script - * is loaded and executed. A boolean parameter is passed to the callback, - * indicating the success of the load. - * - * @see CKEDITOR.scriptLoader#load - */ - queue: (function() { - var pending = []; - - // Loads the very first script from queue and removes it. - function loadNext() { - var script; - - if ( ( script = pending[ 0 ] ) ) - this.load( script.scriptUrl, script.callback, CKEDITOR, 0 ); - } - - return function( scriptUrl, callback ) { - var that = this; - - // This callback calls the standard callback for the script - // and loads the very next script from pending list. - function callbackWrapper() { - callback && callback.apply( this, arguments ); - - // Removed the just loaded script from the queue. - pending.shift(); - - loadNext.call( that ); - } - - // Let's add this script to the queue - pending.push( { scriptUrl: scriptUrl, callback: callbackWrapper } ); - - // If the queue was empty, then start loading. - if ( pending.length == 1 ) - loadNext.call( this ); - }; - })() - }; -})(); |