_source/plugins/htmldataprocessor/plugin.js

   1 /*\r
   2 Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.\r
   3 For licensing, see LICENSE.html or http://ckeditor.com/license\r
   4 */\r
   5 \r
   6 (function()\r
   7 {\r
   8         // Regex to scan for &nbsp; at the end of blocks, which are actually placeholders.\r
   9         // Safari transforms the &nbsp; to \xa0. (#4172)\r
  10         var tailNbspRegex = /^[\t\r\n ]*(?:&nbsp;|\xa0)$/;\r
  11 \r
  12         var protectedSourceMarker = '{cke_protected}';\r
  13 \r
  14         // Return the last non-space child node of the block (#4344).\r
  15         function lastNoneSpaceChild( block )\r
  16         {\r
  17                 var lastIndex = block.children.length,\r
  18                         last = block.children[ lastIndex - 1 ];\r
  19                 while (  last && last.type == CKEDITOR.NODE_TEXT && !CKEDITOR.tools.trim( last.value ) )\r
  20                         last = block.children[ --lastIndex ];\r
  21                 return last;\r
  22         }\r
  23 \r
  24         function getNodeIndex( node ) {\r
  25                 var parent = node.parent;\r
  26                 return parent ? CKEDITOR.tools.indexOf( parent.children, node ) : -1;\r
  27         }\r
  28 \r
  29         function trimFillers( block, fromSource )\r
  30         {\r
  31                 // If the current node is a block, and if we're converting from source or\r
  32                 // we're not in IE then search for and remove any tailing BR node.\r
  33                 //\r
  34                 // Also, any &nbsp; at the end of blocks are fillers, remove them as well.\r
  35                 // (#2886)\r
  36                 var children = block.children, lastChild = lastNoneSpaceChild( block );\r
  37                 if ( lastChild )\r
  38                 {\r
  39                         if ( ( fromSource || !CKEDITOR.env.ie ) && lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.name == 'br' )\r
  40                                 children.pop();\r
  41                         if ( lastChild.type == CKEDITOR.NODE_TEXT && tailNbspRegex.test( lastChild.value ) )\r
  42                                 children.pop();\r
  43                 }\r
  44         }\r
  45 \r
  46         function blockNeedsExtension( block, fromSource, extendEmptyBlock )\r
  47         {\r
  48                 if( !fromSource && ( !extendEmptyBlock ||\r
  49                         typeof extendEmptyBlock == 'function' && ( extendEmptyBlock( block ) === false ) ) )\r
  50                         return false;\r
  51 \r
  52         // 1. For IE version >=8,  empty blocks are displayed correctly themself in wysiwiyg;\r
  53         // 2. For the rest, at least table cell and list item need no filler space.\r
  54         // (#6248)\r
  55         if ( fromSource && CKEDITOR.env.ie &&\r
  56                 ( document.documentMode > 7\r
  57                         || block.name in CKEDITOR.dtd.tr\r
  58                         || block.name in CKEDITOR.dtd.$listItem ) )\r
  59                 return false;\r
  60 \r
  61                 var lastChild = lastNoneSpaceChild( block );\r
  62 \r
  63                 return !lastChild || lastChild &&\r
  64                                 ( lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.name == 'br'\r
  65                                 // Some of the controls in form needs extension too,\r
  66                                 // to move cursor at the end of the form. (#4791)\r
  67                                 || block.name == 'form' && lastChild.name == 'input' );\r
  68         }\r
  69 \r
  70         function getBlockExtension( isOutput, emptyBlockFiller )\r
  71         {\r
  72                 return function( node )\r
  73                 {\r
  74                         trimFillers( node, !isOutput );\r
  75 \r
  76                         if ( blockNeedsExtension( node, !isOutput, emptyBlockFiller ) )\r
  77                         {\r
  78                                 if ( isOutput || CKEDITOR.env.ie )\r
  79                                         node.add( new CKEDITOR.htmlParser.text( '\xa0' ) );\r
  80                                 else\r
  81                                         node.add( new CKEDITOR.htmlParser.element( 'br', {} ) );\r
  82                         }\r
  83                 };\r
  84         }\r
  85 \r
  86         var dtd = CKEDITOR.dtd;\r
  87 \r
  88         // Define orders of table elements.\r
  89         var tableOrder = [ 'caption', 'colgroup', 'col', 'thead', 'tfoot', 'tbody' ];\r
  90 \r
  91         // Find out the list of block-like tags that can contain <br>.\r
  92         var blockLikeTags = CKEDITOR.tools.extend( {}, dtd.$block, dtd.$listItem, dtd.$tableContent );\r
  93         for ( var i in blockLikeTags )\r
  94         {\r
  95                 if ( ! ( 'br' in dtd[i] ) )\r
  96                         delete blockLikeTags[i];\r
  97         }\r
  98         // We just avoid filler in <pre> right now.\r
  99         // TODO: Support filler for <pre>, line break is also occupy line height.\r
 100         delete blockLikeTags.pre;\r
 101         var defaultDataFilterRules =\r
 102         {\r
 103                 elements : {},\r
 104                 attributeNames :\r
 105                 [\r
 106                         // Event attributes (onXYZ) must not be directly set. They can become\r
 107                         // active in the editing area (IE|WebKit).\r
 108                         [ ( /^on/ ), 'data-cke-pa-on' ]\r
 109                 ]\r
 110         };\r
 111 \r
 112         var defaultDataBlockFilterRules = { elements : {} };\r
 113 \r
 114         for ( i in blockLikeTags )\r
 115                 defaultDataBlockFilterRules.elements[ i ] = getBlockExtension();\r
 116 \r
 117         var defaultHtmlFilterRules =\r
 118                 {\r
 119                         elementNames :\r
 120                         [\r
 121                                 // Remove the "cke:" namespace prefix.\r
 122                                 [ ( /^cke:/ ), '' ],\r
 123 \r
 124                                 // Ignore <?xml:namespace> tags.\r
 125                                 [ ( /^\?xml:namespace$/ ), '' ]\r
 126                         ],\r
 127 \r
 128                         attributeNames :\r
 129                         [\r
 130                                 // Attributes saved for changes and protected attributes.\r
 131                                 [ ( /^data-cke-(saved|pa)-/ ), '' ],\r
 132 \r
 133                                 // All "data-cke-" attributes are to be ignored.\r
 134                                 [ ( /^data-cke-.*/ ), '' ],\r
 135 \r
 136                                 [ 'hidefocus', '' ]\r
 137                         ],\r
 138 \r
 139                         elements :\r
 140                         {\r
 141                                 $ : function( element )\r
 142                                 {\r
 143                                         var attribs = element.attributes;\r
 144 \r
 145                                         if ( attribs )\r
 146                                         {\r
 147                                                 // Elements marked as temporary are to be ignored.\r
 148                                                 if ( attribs[ 'data-cke-temp' ] )\r
 149                                                         return false;\r
 150 \r
 151                                                 // Remove duplicated attributes - #3789.\r
 152                                                 var attributeNames = [ 'name', 'href', 'src' ],\r
 153                                                         savedAttributeName;\r
 154                                                 for ( var i = 0 ; i < attributeNames.length ; i++ )\r
 155                                                 {\r
 156                                                         savedAttributeName = 'data-cke-saved-' + attributeNames[ i ];\r
 157                                                         savedAttributeName in attribs && ( delete attribs[ attributeNames[ i ] ] );\r
 158                                                 }\r
 159                                         }\r
 160 \r
 161                                         return element;\r
 162                                 },\r
 163 \r
 164                                 // The contents of table should be in correct order (#4809).\r
 165                                 table : function( element )\r
 166                                 {\r
 167                                         // Clone the array as it would become empty during the sort call.\r
 168                                         var children = element.children.slice( 0 );\r
 169                                         children.sort( function ( node1, node2 )\r
 170                                                                    {\r
 171                                                                                  var index1, index2;\r
 172 \r
 173                                                                                  // Compare in the predefined order.\r
 174                                                                                  if ( node1.type == CKEDITOR.NODE_ELEMENT &&\r
 175                                                                                                         node2.type == node1.type )\r
 176                                                                                  {\r
 177                                                                                          index1 = CKEDITOR.tools.indexOf( tableOrder, node1.name );\r
 178                                                                                          index2 = CKEDITOR.tools.indexOf( tableOrder, node2.name );\r
 179                                                                                  }\r
 180 \r
 181                                                                                  // Make sure the sort is stable, if no order can be established above.\r
 182                                                                                  if ( !( index1 > -1 && index2 > -1 && index1 != index2 ) )\r
 183                                                                                  {\r
 184                                                                                          index1 = getNodeIndex( node1 );\r
 185                                                                                          index2 = getNodeIndex( node2 );\r
 186                                                                                  }\r
 187 \r
 188                                                                                  return index1 > index2 ? 1 : -1;\r
 189                                                                          } );\r
 190                                 },\r
 191 \r
 192                                 embed : function( element )\r
 193                                 {\r
 194                                         var parent = element.parent;\r
 195 \r
 196                                         // If the <embed> is child of a <object>, copy the width\r
 197                                         // and height attributes from it.\r
 198                                         if ( parent && parent.name == 'object' )\r
 199                                         {\r
 200                                                 var parentWidth = parent.attributes.width,\r
 201                                                         parentHeight = parent.attributes.height;\r
 202                                                 parentWidth && ( element.attributes.width = parentWidth );\r
 203                                                 parentHeight && ( element.attributes.height = parentHeight );\r
 204                                         }\r
 205                                 },\r
 206                                 // Restore param elements into self-closing.\r
 207                                 param : function( param )\r
 208                                 {\r
 209                                         param.children = [];\r
 210                                         param.isEmpty = true;\r
 211                                         return param;\r
 212                                 },\r
 213 \r
 214                                 // Remove empty link but not empty anchor.(#3829)\r
 215                                 a : function( element )\r
 216                                 {\r
 217                                         if ( !( element.children.length ||\r
 218                                                         element.attributes.name ||\r
 219                                                         element.attributes[ 'data-cke-saved-name' ] ) )\r
 220                                         {\r
 221                                                 return false;\r
 222                                         }\r
 223                                 },\r
 224 \r
 225                                 // Remove dummy span in webkit.\r
 226                                 span: function( element )\r
 227                                 {\r
 228                                         if ( element.attributes[ 'class' ] == 'Apple-style-span' )\r
 229                                                 delete element.name;\r
 230                                 },\r
 231 \r
 232                                 // Empty <pre> in IE is reported with filler node (&nbsp;).\r
 233                                 pre : function( element ) { CKEDITOR.env.ie && trimFillers( element ); },\r
 234 \r
 235                                 html : function( element )\r
 236                                 {\r
 237                                         delete element.attributes.contenteditable;\r
 238                                         delete element.attributes[ 'class' ];\r
 239                                 },\r
 240 \r
 241                                 body : function( element )\r
 242                                 {\r
 243                                         delete element.attributes.spellcheck;\r
 244                                         delete element.attributes.contenteditable;\r
 245                                 },\r
 246 \r
 247                                 style : function( element )\r
 248                                 {\r
 249                                         var child = element.children[ 0 ];\r
 250                                         child && child.value && ( child.value = CKEDITOR.tools.trim( child.value ));\r
 251 \r
 252                                         if ( !element.attributes.type )\r
 253                                                 element.attributes.type = 'text/css';\r
 254                                 },\r
 255 \r
 256                                 title : function( element )\r
 257                                 {\r
 258                                         var titleText = element.children[ 0 ];\r
 259                                         titleText && ( titleText.value = element.attributes[ 'data-cke-title' ] || '' );\r
 260                                 }\r
 261                         },\r
 262 \r
 263                         attributes :\r
 264                         {\r
 265                                 'class' : function( value, element )\r
 266                                 {\r
 267                                         // Remove all class names starting with "cke_".\r
 268                                         return CKEDITOR.tools.ltrim( value.replace( /(?:^|\s+)cke_[^\s]*/g, '' ) ) || false;\r
 269                                 }\r
 270                         }\r
 271                 };\r
 272 \r
 273         if ( CKEDITOR.env.ie )\r
 274         {\r
 275                 // IE outputs style attribute in capital letters. We should convert\r
 276                 // them back to lower case, while not hurting the values (#5930)\r
 277                 defaultHtmlFilterRules.attributes.style = function( value, element )\r
 278                 {\r
 279                         return value.replace( /(^|;)([^\:]+)/g, function( match )\r
 280                                 {\r
 281                                         return match.toLowerCase();\r
 282                                 });\r
 283                 };\r
 284         }\r
 285 \r
 286         function protectReadOnly( element )\r
 287         {\r
 288                 var attrs = element.attributes;\r
 289 \r
 290                 // We should flag that the element was locked by our code so\r
 291                 // it'll be editable by the editor functions (#6046).\r
 292                 if ( attrs.contenteditable != "false" )\r
 293                         attrs[ 'data-cke-editable' ] = attrs.contenteditable ? 'true' : 1;\r
 294 \r
 295                 attrs.contenteditable = "false";\r
 296         }\r
 297         function unprotectReadyOnly( element )\r
 298         {\r
 299                 var attrs = element.attributes;\r
 300                 switch( attrs[ 'data-cke-editable' ] )\r
 301                 {\r
 302                         case 'true':    attrs.contenteditable = 'true'; break;\r
 303                         case '1':               delete attrs.contenteditable;   break;\r
 304                 }\r
 305         }\r
 306         // Disable form elements editing mode provided by some browers. (#5746)\r
 307         for ( i in { input : 1, textarea : 1 } )\r
 308         {\r
 309                 defaultDataFilterRules.elements[ i ] = protectReadOnly;\r
 310                 defaultHtmlFilterRules.elements[ i ] = unprotectReadyOnly;\r
 311         }\r
 312 \r
 313         var protectElementRegex = /<(a|area|img|input|source)\b([^>]*)>/gi,\r
 314                 protectAttributeRegex = /\b(on\w+|href|src|name)\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|(?:[^ "'>]+))/gi;\r
 315 \r
 316         var protectElementsRegex = /(?:<style(?=[ >])[^>]*>[\s\S]*<\/style>)|(?:<(:?link|meta|base)[^>]*>)/gi,\r
 317                 encodedElementsRegex = /<cke:encoded>([^<]*)<\/cke:encoded>/gi;\r
 318 \r
 319         var protectElementNamesRegex = /(<\/?)((?:object|embed|param|html|body|head|title)[^>]*>)/gi,\r
 320                 unprotectElementNamesRegex = /(<\/?)cke:((?:html|body|head|title)[^>]*>)/gi;\r
 321 \r
 322         var protectSelfClosingRegex = /<cke:(param|embed)([^>]*?)\/?>(?!\s*<\/cke:\1)/gi;\r
 323 \r
 324         function protectAttributes( html )\r
 325         {\r
 326                 return html.replace( protectElementRegex, function( element, tag, attributes )\r
 327                 {\r
 328                         return '<' +  tag + attributes.replace( protectAttributeRegex, function( fullAttr, attrName )\r
 329                         {\r
 330                                 // Avoid corrupting the inline event attributes (#7243).\r
 331                                 // We should not rewrite the existed protected attributes, e.g. clipboard content from editor. (#5218)\r
 332                                 if ( !( /^on/ ).test( attrName ) && attributes.indexOf( 'data-cke-saved-' + attrName ) == -1 )\r
 333                                         return ' data-cke-saved-' + fullAttr + ' data-cke-' + CKEDITOR.rnd + '-' + fullAttr;\r
 334 \r
 335                                 return fullAttr;\r
 336                         }) + '>';\r
 337                 });\r
 338         }\r
 339 \r
 340         function protectElements( html )\r
 341         {\r
 342                 return html.replace( protectElementsRegex, function( match )\r
 343                         {\r
 344                                 return '<cke:encoded>' + encodeURIComponent( match ) + '</cke:encoded>';\r
 345                         });\r
 346         }\r
 347 \r
 348         function unprotectElements( html )\r
 349         {\r
 350                 return html.replace( encodedElementsRegex, function( match, encoded )\r
 351                         {\r
 352                                 return decodeURIComponent( encoded );\r
 353                         });\r
 354         }\r
 355 \r
 356         function protectElementsNames( html )\r
 357         {\r
 358                 return html.replace( protectElementNamesRegex, '$1cke:$2');\r
 359         }\r
 360 \r
 361         function unprotectElementNames( html )\r
 362         {\r
 363                 return html.replace( unprotectElementNamesRegex, '$1$2' );\r
 364         }\r
 365 \r
 366         function protectSelfClosingElements( html )\r
 367         {\r
 368                 return html.replace( protectSelfClosingRegex, '<cke:$1$2></cke:$1>' );\r
 369         }\r
 370 \r
 371         function protectPreFormatted( html )\r
 372         {\r
 373                 return html.replace( /(<pre\b[^>]*>)(\r\n|\n)/g, '$1$2$2' );\r
 374         }\r
 375 \r
 376         function protectRealComments( html )\r
 377         {\r
 378                 return html.replace( /<!--(?!{cke_protected})[\s\S]+?-->/g, function( match )\r
 379                         {\r
 380                                 return '<!--' + protectedSourceMarker +\r
 381                                                 '{C}' +\r
 382                                                 encodeURIComponent( match ).replace( /--/g, '%2D%2D' ) +\r
 383                                                 '-->';\r
 384                         });\r
 385         }\r
 386 \r
 387         function unprotectRealComments( html )\r
 388         {\r
 389                 return html.replace( /<!--\{cke_protected\}\{C\}([\s\S]+?)-->/g, function( match, data )\r
 390                         {\r
 391                                 return decodeURIComponent( data );\r
 392                         });\r
 393         }\r
 394 \r
 395         function unprotectSource( html, editor )\r
 396         {\r
 397                 var store = editor._.dataStore;\r
 398 \r
 399                 return html.replace( /<!--\{cke_protected\}([\s\S]+?)-->/g, function( match, data )\r
 400                         {\r
 401                                 return decodeURIComponent( data );\r
 402                         }).replace( /\{cke_protected_(\d+)\}/g, function( match, id )\r
 403                         {\r
 404                                 return store && store[ id ] || '';\r
 405                         });\r
 406         }\r
 407 \r
 408         function protectSource( data, editor )\r
 409         {\r
 410                 var protectedHtml = [],\r
 411                         protectRegexes = editor.config.protectedSource,\r
 412                         store = editor._.dataStore || ( editor._.dataStore = { id : 1 } ),\r
 413                         tempRegex = /<\!--\{cke_temp(comment)?\}(\d*?)-->/g;\r
 414 \r
 415                 var regexes =\r
 416                         [\r
 417                                 // Script tags will also be forced to be protected, otherwise\r
 418                                 // IE will execute them.\r
 419                                 ( /<script[\s\S]*?<\/script>/gi ),\r
 420 \r
 421                                 // <noscript> tags (get lost in IE and messed up in FF).\r
 422                                 /<noscript[\s\S]*?<\/noscript>/gi\r
 423                         ]\r
 424                         .concat( protectRegexes );\r
 425 \r
 426                 // First of any other protection, we must protect all comments\r
 427                 // to avoid loosing them (of course, IE related).\r
 428                 // Note that we use a different tag for comments, as we need to\r
 429                 // transform them when applying filters.\r
 430                 data = data.replace( (/<!--[\s\S]*?-->/g), function( match )\r
 431                         {\r
 432                                 return  '<!--{cke_tempcomment}' + ( protectedHtml.push( match ) - 1 ) + '-->';\r
 433                         });\r
 434 \r
 435                 for ( var i = 0 ; i < regexes.length ; i++ )\r
 436                 {\r
 437                         data = data.replace( regexes[i], function( match )\r
 438                                 {\r
 439                                         match = match.replace( tempRegex,               // There could be protected source inside another one. (#3869).\r
 440                                                 function( $, isComment, id )\r
 441                                                 {\r
 442                                                         return protectedHtml[ id ];\r
 443                                                 }\r
 444                                         );\r
 445 \r
 446                                         // Avoid protecting over protected, e.g. /\{.*?\}/\r
 447                                         return ( /cke_temp(comment)?/ ).test( match ) ? match\r
 448                                                 : '<!--{cke_temp}' + ( protectedHtml.push( match ) - 1 ) + '-->';\r
 449                                 });\r
 450                 }\r
 451                 data = data.replace( tempRegex, function( $, isComment, id )\r
 452                         {\r
 453                                 return '<!--' + protectedSourceMarker +\r
 454                                                 ( isComment ? '{C}' : '' ) +\r
 455                                                 encodeURIComponent( protectedHtml[ id ] ).replace( /--/g, '%2D%2D' ) +\r
 456                                                 '-->';\r
 457                         }\r
 458                 );\r
 459 \r
 460                 // Different protection pattern is used for those that\r
 461                 // live in attributes to avoid from being HTML encoded.\r
 462                 return data.replace( /(['"]).*?\1/g, function ( match )\r
 463                 {\r
 464                         return match.replace( /<!--\{cke_protected\}([\s\S]+?)-->/g, function( match, data )\r
 465                         {\r
 466                                 store[ store.id ] = decodeURIComponent( data );\r
 467                                 return '{cke_protected_'+ ( store.id++ )  + '}';\r
 468                         });\r
 469                 });\r
 470         }\r
 471 \r
 472         CKEDITOR.plugins.add( 'htmldataprocessor',\r
 473         {\r
 474                 requires : [ 'htmlwriter' ],\r
 475 \r
 476                 init : function( editor )\r
 477                 {\r
 478                         var dataProcessor = editor.dataProcessor = new CKEDITOR.htmlDataProcessor( editor );\r
 479 \r
 480                         dataProcessor.writer.forceSimpleAmpersand = editor.config.forceSimpleAmpersand;\r
 481 \r
 482                         dataProcessor.dataFilter.addRules( defaultDataFilterRules );\r
 483                         dataProcessor.dataFilter.addRules( defaultDataBlockFilterRules );\r
 484                         dataProcessor.htmlFilter.addRules( defaultHtmlFilterRules );\r
 485 \r
 486                         var defaultHtmlBlockFilterRules = { elements : {} };\r
 487                         for ( i in blockLikeTags )\r
 488                                 defaultHtmlBlockFilterRules.elements[ i ] = getBlockExtension( true, editor.config.fillEmptyBlocks );\r
 489 \r
 490                         dataProcessor.htmlFilter.addRules( defaultHtmlBlockFilterRules );\r
 491                 },\r
 492 \r
 493                 onLoad : function()\r
 494                 {\r
 495                         ! ( 'fillEmptyBlocks' in CKEDITOR.config ) && ( CKEDITOR.config.fillEmptyBlocks = 1 );\r
 496                 }\r
 497         });\r
 498 \r
 499         CKEDITOR.htmlDataProcessor = function( editor )\r
 500         {\r
 501                 this.editor = editor;\r
 502 \r
 503                 this.writer = new CKEDITOR.htmlWriter();\r
 504                 this.dataFilter = new CKEDITOR.htmlParser.filter();\r
 505                 this.htmlFilter = new CKEDITOR.htmlParser.filter();\r
 506         };\r
 507 \r
 508         CKEDITOR.htmlDataProcessor.prototype =\r
 509         {\r
 510                 toHtml : function( data, fixForBody )\r
 511                 {\r
 512                         // The source data is already HTML, but we need to clean\r
 513                         // it up and apply the filter.\r
 514 \r
 515                         data = protectSource( data, this.editor );\r
 516 \r
 517                         // Before anything, we must protect the URL attributes as the\r
 518                         // browser may changing them when setting the innerHTML later in\r
 519                         // the code.\r
 520                         data = protectAttributes( data );\r
 521 \r
 522                         // Protect elements than can't be set inside a DIV. E.g. IE removes\r
 523                         // style tags from innerHTML. (#3710)\r
 524                         data = protectElements( data );\r
 525 \r
 526                         // Certain elements has problem to go through DOM operation, protect\r
 527                         // them by prefixing 'cke' namespace. (#3591)\r
 528                         data = protectElementsNames( data );\r
 529 \r
 530                         // All none-IE browsers ignore self-closed custom elements,\r
 531                         // protecting them into open-close. (#3591)\r
 532                         data = protectSelfClosingElements( data );\r
 533 \r
 534                         // Compensate one leading line break after <pre> open as browsers\r
 535                         // eat it up. (#5789)\r
 536                         data = protectPreFormatted( data );\r
 537 \r
 538                         // Call the browser to help us fixing a possibly invalid HTML\r
 539                         // structure.\r
 540                         var div = new CKEDITOR.dom.element( 'div' );\r
 541 \r
 542                         // Add fake character to workaround IE comments bug. (#3801)\r
 543                         div.setHtml( 'a' + data );\r
 544                         data = div.getHtml().substr( 1 );\r
 545 \r
 546                         // Restore shortly protected attribute names.\r
 547                         data = data.replace( new RegExp( ' data-cke-' + CKEDITOR.rnd + '-', 'ig' ), ' ' );\r
 548 \r
 549                         // Unprotect "some" of the protected elements at this point.\r
 550                         data = unprotectElementNames( data );\r
 551 \r
 552                         data = unprotectElements( data );\r
 553 \r
 554                         // Restore the comments that have been protected, in this way they\r
 555                         // can be properly filtered.\r
 556                         data = unprotectRealComments( data );\r
 557 \r
 558                         // Now use our parser to make further fixes to the structure, as\r
 559                         // well as apply the filter.\r
 560                         var fragment = CKEDITOR.htmlParser.fragment.fromHtml( data, fixForBody ),\r
 561                                 writer = new CKEDITOR.htmlParser.basicWriter();\r
 562 \r
 563                         fragment.writeHtml( writer, this.dataFilter );\r
 564                         data = writer.getHtml( true );\r
 565 \r
 566                         // Protect the real comments again.\r
 567                         data = protectRealComments( data );\r
 568 \r
 569                         return data;\r
 570                 },\r
 571 \r
 572                 toDataFormat : function( html, fixForBody )\r
 573                 {\r
 574                         var writer = this.writer,\r
 575                                 fragment = CKEDITOR.htmlParser.fragment.fromHtml( html, fixForBody );\r
 576 \r
 577                         writer.reset();\r
 578 \r
 579                         fragment.writeHtml( writer, this.htmlFilter );\r
 580 \r
 581                         var data = writer.getHtml( true );\r
 582 \r
 583                         // Restore those non-HTML protected source. (#4475,#4880)\r
 584                         data = unprotectRealComments( data );\r
 585                         data = unprotectSource( data, this.editor );\r
 586 \r
 587                         return data;\r
 588                 }\r
 589         };\r
 590 })();\r
 591 \r
 592 /**\r
 593  * Whether to force using "&" instead of "&amp;amp;" in elements attributes\r
 594  * values, it's not recommended to change this setting for compliance with the\r
 595  * W3C XHTML 1.0 standards (<a href="http://www.w3.org/TR/xhtml1/#C_12">C.12, XHTML 1.0</a>).\r
 596  * @name CKEDITOR.config.forceSimpleAmpersand\r
 597  * @name CKEDITOR.config.forceSimpleAmpersand\r
 598  * @type Boolean\r
 599  * @default false\r
 600  * @example\r
 601  * config.forceSimpleAmpersand = false;\r
 602  */\r
 603 \r
 604 /**\r
 605  * Whether a filler text (non-breaking space entity - &nbsp;) will be inserted into empty block elements in HTML output,\r
 606  * this is used to render block elements properly with line-height; When a function is instead specified,\r
 607  * it'll be passed a {@link CKEDITOR.htmlParser.element} to decide whether adding the filler text\r
 608  * by expecting a boolean return value.\r
 609  * @name CKEDITOR.config.fillEmptyBlocks\r
 610  * @since 3.5\r
 611  * @type Boolean\r
 612  * @default true\r
 613  * @example\r
 614  * config.fillEmptyBlocks = false;      // Prevent filler nodes in all empty blocks.\r
 615  *\r
 616  * // Prevent filler node only in float cleaners.\r
 617  * config.fillEmptyBlocks = function( element )\r
 618  * {\r
 619  *      if ( element.attributes[ 'class' ].indexOf ( 'clear-both' ) != -1 )\r
 620  *              return false;\r
 621  * }\r
 622  */\r