_source/core/tools.js

   1 /*\r
   2 Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.\r
   3 For licensing, see LICENSE.html or http://ckeditor.com/license\r
   4 */\r
   5 \r
   6 /**\r
   7  * @fileOverview Defines the {@link CKEDITOR.tools} object, which contains\r
   8  *              utility functions.\r
   9  */\r
  10 \r
  11 (function()\r
  12 {\r
  13         var functions = [];\r
  14 \r
  15         /**\r
  16          * Utility functions.\r
  17          * @namespace\r
  18          * @example\r
  19          */\r
  20         CKEDITOR.tools =\r
  21         {\r
  22                 /**\r
  23                  * Compare the elements of two arrays.\r
  24                  * @param {Array} arrayA An array to be compared.\r
  25                  * @param {Array} arrayB The other array to be compared.\r
  26                  * @returns {Boolean} "true" is the arrays have the same lenght and\r
  27                  *              their elements match.\r
  28                  * @example\r
  29                  * var a = [ 1, 'a', 3 ];\r
  30                  * var b = [ 1, 3, 'a' ];\r
  31                  * var c = [ 1, 'a', 3 ];\r
  32                  * var d = [ 1, 'a', 3, 4 ];\r
  33                  *\r
  34                  * alert( CKEDITOR.tools.arrayCompare( a, b ) );  // false\r
  35                  * alert( CKEDITOR.tools.arrayCompare( a, c ) );  // true\r
  36                  * alert( CKEDITOR.tools.arrayCompare( a, d ) );  // false\r
  37                  */\r
  38                 arrayCompare : function( arrayA, arrayB )\r
  39                 {\r
  40                         if ( !arrayA && !arrayB )\r
  41                                 return true;\r
  42 \r
  43                         if ( !arrayA || !arrayB || arrayA.length != arrayB.length )\r
  44                                 return false;\r
  45 \r
  46                         for ( var i = 0 ; i < arrayA.length ; i++ )\r
  47                         {\r
  48                                 if ( arrayA[ i ] != arrayB[ i ] )\r
  49                                         return false;\r
  50                         }\r
  51 \r
  52                         return true;\r
  53                 },\r
  54 \r
  55                 /**\r
  56                  * Creates a deep copy of an object.\r
  57                  * Attention: there is no support for recursive references.\r
  58                  * @param {Object} object The object to be cloned.\r
  59                  * @returns {Object} The object clone.\r
  60                  * @example\r
  61                  * var obj =\r
  62                  *     {\r
  63                  *         name : 'John',\r
  64                  *         cars :\r
  65                  *             {\r
  66                  *                 Mercedes : { color : 'blue' },\r
  67                  *                 Porsche : { color : 'red' }\r
  68                  *             }\r
  69                  *     };\r
  70                  * var clone = CKEDITOR.tools.clone( obj );\r
  71                  * clone.name = 'Paul';\r
  72                  * clone.cars.Porsche.color = 'silver';\r
  73                  * alert( obj.name );   // John\r
  74                  * alert( clone.name ); // Paul\r
  75                  * alert( obj.cars.Porsche.color );     // red\r
  76                  * alert( clone.cars.Porsche.color );   // silver\r
  77                  */\r
  78                 clone : function( obj )\r
  79                 {\r
  80                         var clone;\r
  81 \r
  82                         // Array.\r
  83                         if ( obj && ( obj instanceof Array ) )\r
  84                         {\r
  85                                 clone = [];\r
  86 \r
  87                                 for ( var i = 0 ; i < obj.length ; i++ )\r
  88                                         clone[ i ] = this.clone( obj[ i ] );\r
  89 \r
  90                                 return clone;\r
  91                         }\r
  92 \r
  93                         // "Static" types.\r
  94                         if ( obj === null\r
  95                                 || ( typeof( obj ) != 'object' )\r
  96                                 || ( obj instanceof String )\r
  97                                 || ( obj instanceof Number )\r
  98                                 || ( obj instanceof Boolean )\r
  99                                 || ( obj instanceof Date ) )\r
 100                         {\r
 101                                 return obj;\r
 102                         }\r
 103 \r
 104                         // Objects.\r
 105                         clone = new obj.constructor();\r
 106 \r
 107                         for ( var propertyName in obj )\r
 108                         {\r
 109                                 var property = obj[ propertyName ];\r
 110                                 clone[ propertyName ] = this.clone( property );\r
 111                         }\r
 112 \r
 113                         return clone;\r
 114                 },\r
 115 \r
 116                 /**\r
 117                  * Copy the properties from one object to another. By default, properties\r
 118                  * already present in the target object <strong>are not</strong> overwritten.\r
 119                  * @param {Object} target The object to be extended.\r
 120                  * @param {Object} source[,souce(n)] The objects from which copy\r
 121                  *              properties. Any number of objects can be passed to this function.\r
 122                  * @param {Boolean} [overwrite] If 'true' is specified it indicates that\r
 123                  *            properties already present in the target object could be\r
 124                  *            overwritten by subsequent objects.\r
 125                  * @param {Object} [properties] Only properties within the specified names\r
 126                  *            list will be received from the source object.\r
 127                  * @returns {Object} the extended object (target).\r
 128                  * @example\r
 129                  * // Create the sample object.\r
 130                  * var myObject =\r
 131                  * {\r
 132                  *     prop1 : true\r
 133                  * };\r
 134                  *\r
 135                  * // Extend the above object with two properties.\r
 136                  * CKEDITOR.tools.extend( myObject,\r
 137                  *     {\r
 138                  *         prop2 : true,\r
 139                  *         prop3 : true\r
 140                  *     } );\r
 141                  *\r
 142                  * // Alert "prop1", "prop2" and "prop3".\r
 143                  * for ( var p in myObject )\r
 144                  *     alert( p );\r
 145                  */\r
 146                 extend : function( target )\r
 147                 {\r
 148                         var argsLength = arguments.length,\r
 149                                 overwrite, propertiesList;\r
 150 \r
 151                         if ( typeof ( overwrite = arguments[ argsLength - 1 ] ) == 'boolean')\r
 152                                 argsLength--;\r
 153                         else if ( typeof ( overwrite = arguments[ argsLength - 2 ] ) == 'boolean' )\r
 154                         {\r
 155                                 propertiesList = arguments [ argsLength -1 ];\r
 156                                 argsLength-=2;\r
 157                         }\r
 158                         for ( var i = 1 ; i < argsLength ; i++ )\r
 159                         {\r
 160                                 var source = arguments[ i ];\r
 161                                 for ( var propertyName in source )\r
 162                                 {\r
 163                                         // Only copy existed fields if in overwrite mode.\r
 164                                         if ( overwrite === true || target[ propertyName ] == undefined )\r
 165                                         {\r
 166                                                 // Only copy  specified fields if list is provided.\r
 167                                                 if ( !propertiesList || ( propertyName in propertiesList ) )\r
 168                                                         target[ propertyName ] = source[ propertyName ];\r
 169 \r
 170                                         }\r
 171                                 }\r
 172                         }\r
 173 \r
 174                         return target;\r
 175                 },\r
 176 \r
 177                 /**\r
 178                  * Creates an object which is an instance of a class which prototype is a\r
 179                  * predefined object. All properties defined in the source object are\r
 180                  * automatically inherited by the resulting object, including future\r
 181                  * changes to it.\r
 182                  * @param {Object} source The source object to be used as the prototype for\r
 183                  *              the final object.\r
 184                  * @returns {Object} The resulting copy.\r
 185                  */\r
 186                 prototypedCopy : function( source )\r
 187                 {\r
 188                         var copy = function()\r
 189                         {};\r
 190                         copy.prototype = source;\r
 191                         return new copy();\r
 192                 },\r
 193 \r
 194                 /**\r
 195                  * Checks if an object is an Array.\r
 196                  * @param {Object} object The object to be checked.\r
 197                  * @type Boolean\r
 198                  * @returns <i>true</i> if the object is an Array, otherwise <i>false</i>.\r
 199                  * @example\r
 200                  * alert( CKEDITOR.tools.isArray( [] ) );      // "true"\r
 201                  * alert( CKEDITOR.tools.isArray( 'Test' ) );  // "false"\r
 202                  */\r
 203                 isArray : function( object )\r
 204                 {\r
 205                         return ( !!object && object instanceof Array );\r
 206                 },\r
 207 \r
 208                 isEmpty : function ( object )\r
 209                 {\r
 210                         for ( var i in object )\r
 211                         {\r
 212                                 if ( object.hasOwnProperty( i ) )\r
 213                                         return false;\r
 214                         }\r
 215                         return true;\r
 216                 },\r
 217                 /**\r
 218                  * Transforms a CSS property name to its relative DOM style name.\r
 219                  * @param {String} cssName The CSS property name.\r
 220                  * @returns {String} The transformed name.\r
 221                  * @example\r
 222                  * alert( CKEDITOR.tools.cssStyleToDomStyle( 'background-color' ) );  // "backgroundColor"\r
 223                  * alert( CKEDITOR.tools.cssStyleToDomStyle( 'float' ) );             // "cssFloat"\r
 224                  */\r
 225                 cssStyleToDomStyle : ( function()\r
 226                 {\r
 227                         var test = document.createElement( 'div' ).style;\r
 228 \r
 229                         var cssFloat = ( typeof test.cssFloat != 'undefined' ) ? 'cssFloat'\r
 230                                 : ( typeof test.styleFloat != 'undefined' ) ? 'styleFloat'\r
 231                                 : 'float';\r
 232 \r
 233                         return function( cssName )\r
 234                         {\r
 235                                 if ( cssName == 'float' )\r
 236                                         return cssFloat;\r
 237                                 else\r
 238                                 {\r
 239                                         return cssName.replace( /-./g, function( match )\r
 240                                                 {\r
 241                                                         return match.substr( 1 ).toUpperCase();\r
 242                                                 });\r
 243                                 }\r
 244                         };\r
 245                 } )(),\r
 246 \r
 247                 /**\r
 248                  * Replace special HTML characters in a string with their relative HTML\r
 249                  * entity values.\r
 250                  * @param {String} text The string to be encoded.\r
 251                  * @returns {String} The encode string.\r
 252                  * @example\r
 253                  * alert( CKEDITOR.tools.htmlEncode( 'A > B & C < D' ) );  // "A &amp;gt; B &amp;amp; C &amp;lt; D"\r
 254                  */\r
 255                 htmlEncode : function( text )\r
 256                 {\r
 257                         var standard = function( text )\r
 258                         {\r
 259                                 var span = new CKEDITOR.dom.element( 'span' );\r
 260                                 span.setText( text );\r
 261                                 return span.getHtml();\r
 262                         };\r
 263 \r
 264                         var fix1 = ( standard( '\n' ).toLowerCase() == '<br>' ) ?\r
 265                                 function( text )\r
 266                                 {\r
 267                                         // #3874 IE and Safari encode line-break into <br>\r
 268                                         return standard( text ).replace( /<br>/gi, '\n' );\r
 269                                 } :\r
 270                                 standard;\r
 271 \r
 272                         var fix2 = ( standard( '>' ) == '>' ) ?\r
 273                                 function( text )\r
 274                                 {\r
 275                                         // WebKit does't encode the ">" character, which makes sense, but\r
 276                                         // it's different than other browsers.\r
 277                                         return fix1( text ).replace( />/g, '&gt;' );\r
 278                                 } :\r
 279                                 fix1;\r
 280 \r
 281                         var fix3 = ( standard( '  ' ) == '&nbsp; ' ) ?\r
 282                                 function( text )\r
 283                                 {\r
 284                                         // #3785 IE8 changes spaces (>= 2) to &nbsp;\r
 285                                         return fix2( text ).replace( /&nbsp;/g, ' ' );\r
 286                                 } :\r
 287                                 fix2;\r
 288 \r
 289                         this.htmlEncode = fix3;\r
 290 \r
 291                         return this.htmlEncode( text );\r
 292                 },\r
 293 \r
 294                 /**\r
 295                  * Replace characters can't be represented through CSS Selectors string\r
 296                  * by CSS Escape Notation where the character escape sequence consists\r
 297                  * of a backslash character (\) followed by the orginal characters.\r
 298                  * Ref: http://www.w3.org/TR/css3-selectors/#grammar\r
 299                  * @param cssSelectText\r
 300                  * @return the escaped selector text.\r
 301                  */\r
 302                 escapeCssSelector : function( cssSelectText )\r
 303                 {\r
 304                         return cssSelectText.replace( /[\s#:.,$*^\[\]()~=+>]/g, '\\$&' );\r
 305                 },\r
 306 \r
 307                 /**\r
 308                  * Gets a unique number for this CKEDITOR execution session. It returns\r
 309                  * progressive numbers starting at 1.\r
 310                  * @function\r
 311                  * @returns {Number} A unique number.\r
 312                  * @example\r
 313                  * alert( CKEDITOR.tools.<b>getNextNumber()</b> );  // "1" (e.g.)\r
 314                  * alert( CKEDITOR.tools.<b>getNextNumber()</b> );  // "2"\r
 315                  */\r
 316                 getNextNumber : (function()\r
 317                 {\r
 318                         var last = 0;\r
 319                         return function()\r
 320                         {\r
 321                                 return ++last;\r
 322                         };\r
 323                 })(),\r
 324 \r
 325                 /**\r
 326                  * Creates a function override.\r
 327                  * @param {Function} originalFunction The function to be overridden.\r
 328                  * @param {Function} functionBuilder A function that returns the new\r
 329                  *              function. The original function reference will be passed to this\r
 330                  *              function.\r
 331                  * @returns {Function} The new function.\r
 332                  * @example\r
 333                  * var example =\r
 334                  * {\r
 335                  *     myFunction : function( name )\r
 336                  *     {\r
 337                  *         alert( 'Name: ' + name );\r
 338                  *     }\r
 339                  * };\r
 340                  *\r
 341                  * example.myFunction = CKEDITOR.tools.override( example.myFunction, function( myFunctionOriginal )\r
 342                  *     {\r
 343                  *         return function( name )\r
 344                  *             {\r
 345                  *                 alert( 'Override Name: ' + name );\r
 346                  *                 myFunctionOriginal.call( this, name );\r
 347                  *             };\r
 348                  *     });\r
 349                  */\r
 350                 override : function( originalFunction, functionBuilder )\r
 351                 {\r
 352                         return functionBuilder( originalFunction );\r
 353                 },\r
 354 \r
 355                 /**\r
 356                  * Executes a function after specified delay.\r
 357                  * @param {Function} func The function to be executed.\r
 358                  * @param {Number} [milliseconds] The amount of time (millisecods) to wait\r
 359                  *              to fire the function execution. Defaults to zero.\r
 360                  * @param {Object} [scope] The object to hold the function execution scope\r
 361                  *              (the "this" object). By default the "window" object.\r
 362                  * @param {Object|Array} [args] A single object, or an array of objects, to\r
 363                  *              pass as arguments to the function.\r
 364                  * @param {Object} [ownerWindow] The window that will be used to set the\r
 365                  *              timeout. By default the current "window".\r
 366                  * @returns {Object} A value that can be used to cancel the function execution.\r
 367                  * @example\r
 368                  * CKEDITOR.tools.<b>setTimeout(\r
 369                  *     function()\r
 370                  *     {\r
 371                  *         alert( 'Executed after 2 seconds' );\r
 372                  *     },\r
 373                  *     2000 )</b>;\r
 374                  */\r
 375                 setTimeout : function( func, milliseconds, scope, args, ownerWindow )\r
 376                 {\r
 377                         if ( !ownerWindow )\r
 378                                 ownerWindow = window;\r
 379 \r
 380                         if ( !scope )\r
 381                                 scope = ownerWindow;\r
 382 \r
 383                         return ownerWindow.setTimeout(\r
 384                                 function()\r
 385                                 {\r
 386                                         if ( args )\r
 387                                                 func.apply( scope, [].concat( args ) ) ;\r
 388                                         else\r
 389                                                 func.apply( scope ) ;\r
 390                                 },\r
 391                                 milliseconds || 0 );\r
 392                 },\r
 393 \r
 394                 /**\r
 395                  * Remove spaces from the start and the end of a string. The following\r
 396                  * characters are removed: space, tab, line break, line feed.\r
 397                  * @function\r
 398                  * @param {String} str The text from which remove the spaces.\r
 399                  * @returns {String} The modified string without the boundary spaces.\r
 400                  * @example\r
 401                  * alert( CKEDITOR.tools.trim( '  example ' );  // "example"\r
 402                  */\r
 403                 trim : (function()\r
 404                 {\r
 405                         // We are not using \s because we don't want "non-breaking spaces" to be caught.\r
 406                         var trimRegex = /(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g;\r
 407                         return function( str )\r
 408                         {\r
 409                                 return str.replace( trimRegex, '' ) ;\r
 410                         };\r
 411                 })(),\r
 412 \r
 413                 /**\r
 414                  * Remove spaces from the start (left) of a string. The following\r
 415                  * characters are removed: space, tab, line break, line feed.\r
 416                  * @function\r
 417                  * @param {String} str The text from which remove the spaces.\r
 418                  * @returns {String} The modified string excluding the removed spaces.\r
 419                  * @example\r
 420                  * alert( CKEDITOR.tools.ltrim( '  example ' );  // "example "\r
 421                  */\r
 422                 ltrim : (function()\r
 423                 {\r
 424                         // We are not using \s because we don't want "non-breaking spaces" to be caught.\r
 425                         var trimRegex = /^[ \t\n\r]+/g;\r
 426                         return function( str )\r
 427                         {\r
 428                                 return str.replace( trimRegex, '' ) ;\r
 429                         };\r
 430                 })(),\r
 431 \r
 432                 /**\r
 433                  * Remove spaces from the end (right) of a string. The following\r
 434                  * characters are removed: space, tab, line break, line feed.\r
 435                  * @function\r
 436                  * @param {String} str The text from which remove the spaces.\r
 437                  * @returns {String} The modified string excluding the removed spaces.\r
 438                  * @example\r
 439                  * alert( CKEDITOR.tools.ltrim( '  example ' );  // "  example"\r
 440                  */\r
 441                 rtrim : (function()\r
 442                 {\r
 443                         // We are not using \s because we don't want "non-breaking spaces" to be caught.\r
 444                         var trimRegex = /[ \t\n\r]+$/g;\r
 445                         return function( str )\r
 446                         {\r
 447                                 return str.replace( trimRegex, '' ) ;\r
 448                         };\r
 449                 })(),\r
 450 \r
 451                 /**\r
 452                  * Returns the index of an element in an array.\r
 453                  * @param {Array} array The array to be searched.\r
 454                  * @param {Object} entry The element to be found.\r
 455                  * @returns {Number} The (zero based) index of the first entry that matches\r
 456                  *              the entry, or -1 if not found.\r
 457                  * @example\r
 458                  * var letters = [ 'a', 'b', 0, 'c', false ];\r
 459                  * alert( CKEDITOR.tools.indexOf( letters, '0' ) );  "-1" because 0 !== '0'\r
 460                  * alert( CKEDITOR.tools.indexOf( letters, false ) );  "4" because 0 !== false\r
 461                  */\r
 462                 indexOf :\r
 463                         // #2514: We should try to use Array.indexOf if it does exist.\r
 464                         ( Array.prototype.indexOf ) ?\r
 465                                 function( array, entry )\r
 466                                         {\r
 467                                                 return array.indexOf( entry );\r
 468                                         }\r
 469                         :\r
 470                                 function( array, entry )\r
 471                                 {\r
 472                                         for ( var i = 0, len = array.length ; i < len ; i++ )\r
 473                                         {\r
 474                                                 if ( array[ i ] === entry )\r
 475                                                         return i;\r
 476                                         }\r
 477                                         return -1;\r
 478                                 },\r
 479 \r
 480                 /**\r
 481                  * Creates a function that will always execute in the context of a\r
 482                  * specified object.\r
 483                  * @param {Function} func The function to be executed.\r
 484                  * @param {Object} obj The object to which bind the execution context.\r
 485                  * @returns {Function} The function that can be used to execute the\r
 486                  *              "func" function in the context of "obj".\r
 487                  * @example\r
 488                  * var obj = { text : 'My Object' };\r
 489                  *\r
 490                  * function alertText()\r
 491                  * {\r
 492                  *     alert( this.text );\r
 493                  * }\r
 494                  *\r
 495                  * var newFunc = <b>CKEDITOR.tools.bind( alertText, obj )</b>;\r
 496                  * newFunc();  // Alerts "My Object".\r
 497                  */\r
 498                 bind : function( func, obj )\r
 499                 {\r
 500                         return function() { return func.apply( obj, arguments ); };\r
 501                 },\r
 502 \r
 503                 /**\r
 504                  * Class creation based on prototype inheritance, with supports of the\r
 505                  * following features:\r
 506                  * <ul>\r
 507                  * <li> Static fields </li>\r
 508                  * <li> Private fields </li>\r
 509                  * <li> Public (prototype) fields </li>\r
 510                  * <li> Chainable base class constructor </li>\r
 511                  * </ul>\r
 512                  * @param {Object} definiton The class definiton object.\r
 513                  * @returns {Function} A class-like JavaScript function.\r
 514                  */\r
 515                 createClass : function( definition )\r
 516                 {\r
 517                         var $ = definition.$,\r
 518                                 baseClass = definition.base,\r
 519                                 privates = definition.privates || definition._,\r
 520                                 proto = definition.proto,\r
 521                                 statics = definition.statics;\r
 522 \r
 523                         if ( privates )\r
 524                         {\r
 525                                 var originalConstructor = $;\r
 526                                 $ = function()\r
 527                                 {\r
 528                                         // Create (and get) the private namespace.\r
 529                                         var _ = this._ || ( this._ = {} );\r
 530 \r
 531                                         // Make some magic so "this" will refer to the main\r
 532                                         // instance when coding private functions.\r
 533                                         for ( var privateName in privates )\r
 534                                         {\r
 535                                                 var priv = privates[ privateName ];\r
 536 \r
 537                                                 _[ privateName ] =\r
 538                                                         ( typeof priv == 'function' ) ? CKEDITOR.tools.bind( priv, this ) : priv;\r
 539                                         }\r
 540 \r
 541                                         originalConstructor.apply( this, arguments );\r
 542                                 };\r
 543                         }\r
 544 \r
 545                         if ( baseClass )\r
 546                         {\r
 547                                 $.prototype = this.prototypedCopy( baseClass.prototype );\r
 548                                 $.prototype.constructor = $;\r
 549                                 $.prototype.base = function()\r
 550                                 {\r
 551                                         this.base = baseClass.prototype.base;\r
 552                                         baseClass.apply( this, arguments );\r
 553                                         this.base = arguments.callee;\r
 554                                 };\r
 555                         }\r
 556 \r
 557                         if ( proto )\r
 558                                 this.extend( $.prototype, proto, true );\r
 559 \r
 560                         if ( statics )\r
 561                                 this.extend( $, statics, true );\r
 562 \r
 563                         return $;\r
 564                 },\r
 565 \r
 566                 /**\r
 567                  * Creates a function reference that can be called later using\r
 568                  * CKEDITOR.tools.callFunction. This approach is specially useful to\r
 569                  * make DOM attribute function calls to JavaScript defined functions.\r
 570                  * @param {Function} fn The function to be executed on call.\r
 571                  * @param {Object} [scope] The object to have the context on "fn" execution.\r
 572                  * @returns {Number} A unique reference to be used in conjuction with\r
 573                  *              CKEDITOR.tools.callFunction.\r
 574                  * @example\r
 575                  * var ref = <b>CKEDITOR.tools.addFunction</b>(\r
 576                  *     function()\r
 577                  *     {\r
 578                  *         alert( 'Hello!');\r
 579                  *     });\r
 580                  * CKEDITOR.tools.callFunction( ref );  // Hello!\r
 581                  */\r
 582                 addFunction : function( fn, scope )\r
 583                 {\r
 584                         return functions.push( function()\r
 585                                 {\r
 586                                         fn.apply( scope || this, arguments );\r
 587                                 }) - 1;\r
 588                 },\r
 589 \r
 590                 /**\r
 591                  * Executes a function based on the reference created with\r
 592                  * CKEDITOR.tools.addFunction.\r
 593                  * @param {Number} ref The function reference created with\r
 594                  *              CKEDITOR.tools.addFunction.\r
 595                  * @param {[Any,[Any,...]} params Any number of parameters to be passed\r
 596                  *              to the executed function.\r
 597                  * @returns {Any} The return value of the function.\r
 598                  * @example\r
 599                  * var ref = CKEDITOR.tools.addFunction(\r
 600                  *     function()\r
 601                  *     {\r
 602                  *         alert( 'Hello!');\r
 603                  *     });\r
 604                  * <b>CKEDITOR.tools.callFunction( ref )</b>;  // Hello!\r
 605                  */\r
 606                 callFunction : function( ref )\r
 607                 {\r
 608                         var fn = functions[ ref ];\r
 609                         return fn && fn.apply( window, Array.prototype.slice.call( arguments, 1 ) );\r
 610                 },\r
 611 \r
 612                 cssLength : (function()\r
 613                 {\r
 614                         var decimalRegex = /^\d+(?:\.\d+)?$/;\r
 615                         return function( length )\r
 616                         {\r
 617                                 return length + ( decimalRegex.test( length ) ? 'px' : '' );\r
 618                         };\r
 619                 })(),\r
 620 \r
 621                 repeat : function( str, times )\r
 622                 {\r
 623                         return new Array( times + 1 ).join( str );\r
 624                 }\r
 625         };\r
 626 })();\r
 627 \r
 628 // PACKAGER_RENAME( CKEDITOR.tools )\r