skins/ckeditor/_source/core/skins.js

   1 /*
   2 Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
   3 For licensing, see LICENSE.html or http://ckeditor.com/license
   4 */
   5
   6 /**
   7  * @fileOverview Defines the {@link CKEDITOR.skins} object, which is used to
   8  *              manage skins loading.
   9  */
  10
  11 /**
  12  * Manages skins loading.
  13  * @namespace
  14  * @example
  15  */
  16 CKEDITOR.skins = (function()
  17 {
  18         // Holds the list of loaded skins.
  19         var loaded = {},
  20                 paths = {};
  21
  22         var loadPart = function( editor, skinName, part, callback )
  23         {
  24                 // Get the skin definition.
  25                 var skinDefinition = loaded[ skinName ];
  26
  27                 if ( !editor.skin )
  28                 {
  29                         editor.skin = skinDefinition;
  30
  31                         // Trigger init function if any.
  32                         if ( skinDefinition.init )
  33                                 skinDefinition.init( editor );
  34                 }
  35
  36                 var appendSkinPath = function( fileNames )
  37                 {
  38                         for ( var n = 0 ; n < fileNames.length ; n++ )
  39                         {
  40                                 fileNames[ n ] = CKEDITOR.getUrl( paths[ skinName ] + fileNames[ n ] );
  41                         }
  42                 };
  43
  44                 function fixCSSTextRelativePath( cssStyleText, baseUrl )
  45                 {
  46                         return cssStyleText.replace( /url\s*\(([\s'"]*)(.*?)([\s"']*)\)/g,
  47                                         function( match, opener, path, closer )
  48                                         {
  49                                                 if ( /^\/|^\w?:/.test( path ) )
  50                                                         return match;
  51                                                 else
  52                                                         return 'url(' + baseUrl + opener +  path + closer + ')';
  53                                         } );
  54                 }
  55
  56                 // Get the part definition.
  57                 part = skinDefinition[ part ];
  58                 var partIsLoaded = !part || !!part._isLoaded;
  59
  60                 // Call the callback immediately if already loaded.
  61                 if ( partIsLoaded )
  62                         callback && callback();
  63                 else
  64                 {
  65                         // Put the callback in a queue.
  66                         var pending = part._pending || ( part._pending = [] );
  67                         pending.push( callback );
  68
  69                         // We may have more than one skin part load request. Just the first
  70                         // one must do the loading job.
  71                         if ( pending.length > 1 )
  72                                 return;
  73
  74                         // Check whether the "css" and "js" properties have been defined
  75                         // for that part.
  76                         var cssIsLoaded = !part.css || !part.css.length,
  77                                 jsIsLoaded = !part.js || !part.js.length;
  78
  79                         // This is the function that will trigger the callback calls on
  80                         // load.
  81                         var checkIsLoaded = function()
  82                         {
  83                                 if ( cssIsLoaded && jsIsLoaded )
  84                                 {
  85                                         // Mark the part as loaded.
  86                                         part._isLoaded = 1;
  87
  88                                         // Call all pending callbacks.
  89                                         for ( var i = 0 ; i < pending.length ; i++ )
  90                                         {
  91                                                 if ( pending[ i ] )
  92                                                         pending[ i ]();
  93                                         }
  94                                 }
  95                         };
  96
  97                         // Load the "css" pieces.
  98                         if ( !cssIsLoaded )
  99                         {
 100                                 var cssPart = part.css;
 101
 102                                 if ( CKEDITOR.tools.isArray( cssPart ) )
 103                                 {
 104                                         appendSkinPath( cssPart );
 105                                         for ( var c = 0 ; c < cssPart.length ; c++ )
 106                                                 CKEDITOR.document.appendStyleSheet( cssPart[ c ] );
 107                                 }
 108                                 else
 109                                 {
 110                                         cssPart = fixCSSTextRelativePath(
 111                                                                 cssPart, CKEDITOR.getUrl( paths[ skinName ] ) );
 112                                         // Processing Inline CSS part.
 113                                         CKEDITOR.document.appendStyleText( cssPart );
 114                                 }
 115
 116                                 part.css = cssPart;
 117
 118                                 cssIsLoaded = 1;
 119                         }
 120
 121                         // Load the "js" pieces.
 122                         if ( !jsIsLoaded )
 123                         {
 124                                 appendSkinPath( part.js );
 125                                 CKEDITOR.scriptLoader.load( part.js, function()
 126                                         {
 127                                                 jsIsLoaded = 1;
 128                                                 checkIsLoaded();
 129                                         });
 130                         }
 131
 132                         // We may have nothing to load, so check it immediately.
 133                         checkIsLoaded();
 134                 }
 135         };
 136
 137         return /** @lends CKEDITOR.skins */ {
 138
 139                 /**
 140                  * Registers a skin definition.
 141                  * @param {String} skinName The skin name.
 142                  * @param {Object} skinDefinition The skin definition.
 143                  * @example
 144                  */
 145                 add : function( skinName, skinDefinition )
 146                 {
 147                         loaded[ skinName ] = skinDefinition;
 148
 149                         skinDefinition.skinPath = paths[ skinName ]
 150                                 || ( paths[ skinName ] =
 151                                                 CKEDITOR.getUrl(
 152                                                         '_source/' +    // @Packager.RemoveLine
 153                                                         'skins/' + skinName + '/' ) );
 154                 },
 155
 156                 /**
 157                  * Loads a skin part. Skins are defined in parts, which are basically
 158                  * separated CSS files. This function is mainly used by the core code and
 159                  * should not have much use out of it.
 160                  * @param {String} skinName The name of the skin to be loaded.
 161                  * @param {String} skinPart The skin part to be loaded. Common skin parts
 162                  *              are "editor" and "dialog".
 163                  * @param {Function} [callback] A function to be called once the skin
 164                  *              part files are loaded.
 165                  * @example
 166                  */
 167                 load : function( editor, skinPart, callback )
 168                 {
 169                         var skinName = editor.skinName,
 170                                 skinPath = editor.skinPath;
 171
 172                         if ( loaded[ skinName ] )
 173                                 loadPart( editor, skinName, skinPart, callback );
 174                         else
 175                         {
 176                                 paths[ skinName ] = skinPath;
 177                                 CKEDITOR.scriptLoader.load( CKEDITOR.getUrl( skinPath + 'skin.js' ), function()
 178                                                 {
 179                                                          loadPart( editor, skinName, skinPart, callback );
 180                                                 });
 181                         }
 182                 }
 183         };
 184 })();