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/** * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved. * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license */ /** * @fileOverview Defines the {@link CKEDITOR.loader} objects, which is used to * load core scripts and their dependencies from _source. */ if ( typeof CKEDITOR == 'undefined' ) CKEDITOR = {}; // jshint ignore:line if ( !CKEDITOR.loader ) { /** * Load core scripts and their dependencies from `_source`. * * @class * @singleton */ CKEDITOR.loader = ( function() { // Table of script names and their dependencies. var scripts = { '_bootstrap': [ 'config', 'creators/inline', 'creators/themedui', 'editable', 'ckeditor', 'plugins', 'scriptloader', 'style', 'tools', 'promise', 'selection/optimization', // The following are entries that we want to force loading at the end to avoid dependence recursion. 'dom/comment', 'dom/elementpath', 'dom/text', 'dom/rangelist', 'skin' ], 'ckeditor': [ 'ckeditor_basic', 'log', 'dom', 'dtd', 'dom/document', 'dom/element', 'dom/iterator', 'editor', 'event', 'htmldataprocessor', 'htmlparser', 'htmlparser/element', 'htmlparser/fragment', 'htmlparser/filter', 'htmlparser/basicwriter', 'template', 'tools' ], 'ckeditor_base': [], 'ckeditor_basic': [ 'editor_basic', 'env', 'event' ], 'command': [], 'config': [ 'ckeditor_base' ], 'dom': [], 'dom/comment': [ 'dom/node' ], 'dom/document': [ 'dom/node', 'dom/window' ], 'dom/documentfragment': [ 'dom/element' ], 'dom/element': [ 'dom', 'dom/document', 'dom/domobject', 'dom/node', 'dom/nodelist', 'tools' ], 'dom/elementpath': [ 'dom/element' ], 'dom/event': [], 'dom/iterator': [ 'dom/range' ], 'dom/node': [ 'dom/domobject', 'tools' ], 'dom/nodelist': [ 'dom/node' ], 'dom/domobject': [ 'dom/event' ], 'dom/range': [ 'dom/document', 'dom/documentfragment', 'dom/element', 'dom/walker' ], 'dom/rangelist': [ 'dom/range' ], 'dom/text': [ 'dom/node', 'dom/domobject' ], 'dom/walker': [ 'dom/node' ], 'dom/window': [ 'dom/domobject' ], 'dtd': [ 'tools' ], 'editable': [ 'editor', 'tools' ], 'editor': [ 'command', 'config', 'editor_basic', 'filter', 'focusmanager', 'keystrokehandler', 'lang', 'plugins', 'tools', 'ui' ], 'editor_basic': [ 'event' ], 'env': [], 'event': [], 'filter': [ 'dtd', 'tools' ], 'focusmanager': [], 'htmldataprocessor': [ 'htmlparser', 'htmlparser/basicwriter', 'htmlparser/fragment', 'htmlparser/filter' ], 'htmlparser': [], 'htmlparser/comment': [ 'htmlparser', 'htmlparser/node' ], 'htmlparser/element': [ 'htmlparser', 'htmlparser/fragment', 'htmlparser/node' ], 'htmlparser/fragment': [ 'htmlparser', 'htmlparser/comment', 'htmlparser/text', 'htmlparser/cdata' ], 'htmlparser/text': [ 'htmlparser', 'htmlparser/node' ], 'htmlparser/cdata': [ 'htmlparser', 'htmlparser/node' ], 'htmlparser/filter': [ 'htmlparser' ], 'htmlparser/basicwriter': [ 'htmlparser' ], 'htmlparser/node': [ 'htmlparser' ], 'keystrokehandler': [ 'event' ], 'lang': [], 'log': [ 'ckeditor_basic' ], 'plugins': [ 'resourcemanager' ], 'resourcemanager': [ 'scriptloader', 'tools' ], 'scriptloader': [ 'dom/element', 'env' ], 'selection': [ 'dom/range', 'dom/walker' ], 'skin': [], 'style': [ 'selection' ], 'template': [], 'tools': [ 'env' ], 'ui': [], 'creators/themedui': [], 'creators/inline': [], 'promise': [ 'tools' ], 'selection/optimization': [ 'selection' ] }; // The production implementation contains a fixed timestamp generated by the releaser. var timestamp = '%TIMESTAMP%'; // The development implementation contains a current timestamp. // %REMOVE_LINE% timestamp = ( CKEDITOR && CKEDITOR.timestamp ) || ( new Date() ).valueOf(); // %REMOVE_LINE% var getUrl = function( resource ) { if ( CKEDITOR && CKEDITOR.getUrl ) return CKEDITOR.getUrl( resource ); return CKEDITOR.basePath + resource + ( resource.indexOf( '?' ) >= 0 ? '&' : '?' ) + 't=' + timestamp; }; var pendingLoad = []; return { /** * The list of loaded scripts in their loading order. * * // Alert the loaded script names. * alert( CKEDITOR.loader.loadedScripts ); */ loadedScripts: [], /** * Table of script names and their dependencies. * * @property {Array} */ scripts: scripts, /** * @todo */ loadPending: function() { var scriptName = pendingLoad.shift(); if ( !scriptName ) return; var scriptSrc = getUrl( 'core/' + scriptName + '.js' ); var script = document.createElement( 'script' ); script.type = 'text/javascript'; script.src = scriptSrc; function onScriptLoaded() { // Append this script to the list of loaded scripts. CKEDITOR.loader.loadedScripts.push( scriptName ); // Load the next. CKEDITOR.loader.loadPending(); } // We must guarantee the execution order of the scripts, so we // need to load them one by one. (https://dev.ckeditor.com/ticket/4145) // The following if/else block has been taken from the scriptloader core code. if ( typeof script.onreadystatechange !== 'undefined' ) { /** @ignore */ script.onreadystatechange = function() { if ( script.readyState == 'loaded' || script.readyState == 'complete' ) { script.onreadystatechange = null; onScriptLoaded(); } }; } else { /** @ignore */ script.onload = function() { // Some browsers, such as Safari, may call the onLoad function // immediately. Which will break the loading sequence. (https://dev.ckeditor.com/ticket/3661) setTimeout( function() { // Once the script is loaded, remove the listener as this might lead to memory leaks (#589). script.onload = null; onScriptLoaded( scriptName ); }, 0 ); }; } document.body.appendChild( script ); }, /** * Loads a specific script, including its dependencies. The loading process * is not synchronous, which means that the code to be loaded will * not necessarily be available after this call. * * CKEDITOR.loader.load( 'dom/element' ); * * @param {String} scriptName * @param {Boolean} [defer=false] * @todo params */ load: function( scriptName, defer ) { // Check if the script has already been loaded. if ( ( 's:' + scriptName ) in this.loadedScripts ) return; // Get the script dependencies list. var dependencies = scripts[ scriptName ]; if ( !dependencies ) throw 'The script name"' + scriptName + '" is not defined.'; // Mark the script as loaded, even before really loading it, to // avoid cross references recursion. // Prepend script name with 's:' to avoid conflict with Array's methods. this.loadedScripts[ 's:' + scriptName ] = true; // Load all dependencies first. for ( var i = 0; i < dependencies.length; i++ ) this.load( dependencies[ i ], true ); var scriptSrc = getUrl( 'core/' + scriptName + '.js' ); // Append the <script> element to the DOM. // If the page is fully loaded, we can't use document.write // but if the script is run while the body is loading then it's safe to use it // Unfortunately, Firefox <3.6 doesn't support document.readyState, so it won't get this improvement if ( document.body && ( !document.readyState || document.readyState == 'complete' ) ) { pendingLoad.push( scriptName ); if ( !defer ) this.loadPending(); } else { // Append this script to the list of loaded scripts. this.loadedScripts.push( scriptName ); document.write( '<script src="' + scriptSrc + '" type="text/javascript"><\/script>' ); } } }; } )(); } // Check if any script has been defined for autoload. if ( CKEDITOR._autoLoad ) { CKEDITOR.loader.load( CKEDITOR._autoLoad ); delete CKEDITOR._autoLoad; }