2 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
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3 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
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5 * == BEGIN LICENSE ==
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7 * Licensed under the terms of any of the following licenses at your
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10 * - GNU General Public License Version 2 or later (the "GPL")
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11 * http://www.gnu.org/licenses/gpl.html
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13 * - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
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14 * http://www.gnu.org/licenses/lgpl.html
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16 * - Mozilla Public License Version 1.1 or later (the "MPL")
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17 * http://www.mozilla.org/MPL/MPL-1.1.html
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21 * FCKIndentCommand Class: controls block indentation.
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24 var FCKIndentCommand = function( name, offset )
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27 this.Offset = offset ;
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28 this.IndentCSSProperty = FCKConfig.ContentLangDirection.IEquals( 'ltr' ) ? 'marginLeft' : 'marginRight' ;
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31 FCKIndentCommand._InitIndentModeParameters = function()
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33 if ( FCKConfig.IndentClasses && FCKConfig.IndentClasses.length > 0 )
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35 this._UseIndentClasses = true ;
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36 this._IndentClassMap = {} ;
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37 for ( var i = 0 ; i < FCKConfig.IndentClasses.length ;i++ )
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38 this._IndentClassMap[FCKConfig.IndentClasses[i]] = i + 1 ;
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39 this._ClassNameRegex = new RegExp( '(?:^|\\s+)(' + FCKConfig.IndentClasses.join( '|' ) + ')(?=$|\\s)' ) ;
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42 this._UseIndentClasses = false ;
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46 FCKIndentCommand.prototype =
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48 Execute : function()
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50 // Save an undo snapshot before doing anything.
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51 FCKUndo.SaveUndoStep() ;
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53 var range = new FCKDomRange( FCK.EditorWindow ) ;
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54 range.MoveToSelection() ;
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55 var bookmark = range.CreateBookmark() ;
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57 // Two cases to handle here: either we're in a list, or not.
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58 // If we're in a list, then the indent/outdent operations would be done on the list nodes.
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59 // Otherwise, apply the operation on the nearest block nodes.
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60 var nearestListBlock = FCKDomTools.GetCommonParentNode( range.StartNode || range.StartContainer ,
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61 range.EndNode || range.EndContainer,
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63 if ( nearestListBlock )
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64 this._IndentList( range, nearestListBlock ) ;
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66 this._IndentBlock( range ) ;
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68 range.MoveToBookmark( bookmark ) ;
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72 FCK.Events.FireEvent( 'OnSelectionChange' ) ;
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75 GetState : function()
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77 // Disabled if not WYSIWYG.
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78 if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG || ! FCK.EditorWindow )
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79 return FCK_TRISTATE_DISABLED ;
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81 // Initialize parameters if not already initialzed.
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82 if ( FCKIndentCommand._UseIndentClasses == undefined )
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83 FCKIndentCommand._InitIndentModeParameters() ;
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85 // If we're not in a list, and the starting block's indentation is zero, and the current
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86 // command is the outdent command, then we should return FCK_TRISTATE_DISABLED.
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87 var startContainer = FCKSelection.GetBoundaryParentElement( true ) ;
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88 var endContainer = FCKSelection.GetBoundaryParentElement( false ) ;
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89 var listNode = FCKDomTools.GetCommonParentNode( startContainer, endContainer, ['ul','ol'] ) ;
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93 if ( this.Name.IEquals( 'outdent' ) )
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94 return FCK_TRISTATE_OFF ;
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95 var firstItem = FCKTools.GetElementAscensor( startContainer, 'li' ) ;
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96 if ( !firstItem || !firstItem.previousSibling )
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97 return FCK_TRISTATE_DISABLED ;
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98 return FCK_TRISTATE_OFF ;
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100 if ( ! FCKIndentCommand._UseIndentClasses && this.Name.IEquals( 'indent' ) )
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101 return FCK_TRISTATE_OFF;
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103 var path = new FCKElementPath( startContainer ) ;
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104 var firstBlock = path.Block || path.BlockLimit ;
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106 return FCK_TRISTATE_DISABLED ;
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108 if ( FCKIndentCommand._UseIndentClasses )
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110 var indentClass = firstBlock.className.match( FCKIndentCommand._ClassNameRegex ) ;
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111 var indentStep = 0 ;
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112 if ( indentClass != null )
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114 indentClass = indentClass[1] ;
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115 indentStep = FCKIndentCommand._IndentClassMap[indentClass] ;
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117 if ( ( this.Name == 'outdent' && indentStep == 0 ) ||
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118 ( this.Name == 'indent' && indentStep == FCKConfig.IndentClasses.length ) )
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119 return FCK_TRISTATE_DISABLED ;
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120 return FCK_TRISTATE_OFF ;
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124 var indent = parseInt( firstBlock.style[this.IndentCSSProperty], 10 ) ;
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125 if ( isNaN( indent ) )
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128 return FCK_TRISTATE_DISABLED ;
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129 return FCK_TRISTATE_OFF ;
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133 _IndentBlock : function( range )
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135 var iterator = new FCKDomRangeIterator( range ) ;
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136 iterator.EnforceRealBlocks = true ;
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138 range.Expand( 'block_contents' ) ;
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139 var commonParents = FCKDomTools.GetCommonParents( range.StartContainer, range.EndContainer ) ;
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140 var nearestParent = commonParents[commonParents.length - 1] ;
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143 while ( ( block = iterator.GetNextParagraph() ) )
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145 // We don't want to indent subtrees recursively, so only perform the indent operation
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146 // if the block itself is the nearestParent, or the block's parent is the nearestParent.
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147 if ( ! ( block == nearestParent || block.parentNode == nearestParent ) )
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150 if ( FCKIndentCommand._UseIndentClasses )
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152 // Transform current class name to indent step index.
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153 var indentClass = block.className.match( FCKIndentCommand._ClassNameRegex ) ;
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154 var indentStep = 0 ;
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155 if ( indentClass != null )
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157 indentClass = indentClass[1] ;
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158 indentStep = FCKIndentCommand._IndentClassMap[indentClass] ;
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161 // Operate on indent step index, transform indent step index back to class name.
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162 if ( this.Name.IEquals( 'outdent' ) )
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164 else if ( this.Name.IEquals( 'indent' ) )
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166 indentStep = Math.min( indentStep, FCKConfig.IndentClasses.length ) ;
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167 indentStep = Math.max( indentStep, 0 ) ;
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168 var className = block.className.replace( FCKIndentCommand._ClassNameRegex, '' ) ;
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169 if ( indentStep < 1 )
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170 block.className = className ;
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172 block.className = ( className.length > 0 ? className + ' ' : '' ) +
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173 FCKConfig.IndentClasses[indentStep - 1] ;
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177 // Offset distance is assumed to be in pixels for now.
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178 var currentOffset = parseInt( block.style[this.IndentCSSProperty], 10 ) ;
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179 if ( isNaN( currentOffset ) )
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180 currentOffset = 0 ;
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181 currentOffset += this.Offset ;
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182 currentOffset = Math.max( currentOffset, 0 ) ;
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183 currentOffset = Math.ceil( currentOffset / this.Offset ) * this.Offset ;
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184 block.style[this.IndentCSSProperty] = currentOffset ? currentOffset + FCKConfig.IndentUnit : '' ;
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185 if ( block.getAttribute( 'style' ) == '' )
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186 block.removeAttribute( 'style' ) ;
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191 _IndentList : function( range, listNode )
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193 // Our starting and ending points of the range might be inside some blocks under a list item...
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194 // So before playing with the iterator, we need to expand the block to include the list items.
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195 var startContainer = range.StartContainer ;
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196 var endContainer = range.EndContainer ;
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197 while ( startContainer && startContainer.parentNode != listNode )
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198 startContainer = startContainer.parentNode ;
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199 while ( endContainer && endContainer.parentNode != listNode )
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200 endContainer = endContainer.parentNode ;
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202 if ( ! startContainer || ! endContainer )
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205 // Now we can iterate over the individual items on the same tree depth.
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206 var block = startContainer ;
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207 var itemsToMove = [] ;
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208 var stopFlag = false ;
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209 while ( stopFlag == false )
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211 if ( block == endContainer )
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213 itemsToMove.push( block ) ;
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214 block = block.nextSibling ;
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216 if ( itemsToMove.length < 1 )
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219 // Do indent or outdent operations on the array model of the list, not the list's DOM tree itself.
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220 // The array model demands that it knows as much as possible about the surrounding lists, we need
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221 // to feed it the further ancestor node that is still a list.
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222 var listParents = FCKDomTools.GetParents( listNode ) ;
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223 for ( var i = 0 ; i < listParents.length ; i++ )
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225 if ( listParents[i].nodeName.IEquals( ['ul', 'ol'] ) )
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227 listNode = listParents[i] ;
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231 var indentOffset = this.Name.IEquals( 'indent' ) ? 1 : -1 ;
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232 var startItem = itemsToMove[0] ;
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233 var lastItem = itemsToMove[ itemsToMove.length - 1 ] ;
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234 var markerObj = {} ;
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236 // Convert the list DOM tree into a one dimensional array.
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237 var listArray = FCKDomTools.ListToArray( listNode, markerObj ) ;
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239 // Apply indenting or outdenting on the array.
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240 var baseIndent = listArray[lastItem._FCK_ListArray_Index].indent ;
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241 for ( var i = startItem._FCK_ListArray_Index ; i <= lastItem._FCK_ListArray_Index ; i++ )
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242 listArray[i].indent += indentOffset ;
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243 for ( var i = lastItem._FCK_ListArray_Index + 1 ; i < listArray.length && listArray[i].indent > baseIndent ; i++ )
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244 listArray[i].indent += indentOffset ;
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246 /* For debug use only
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247 var PrintArray = function( listArray, doc )
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250 for ( var i = 0 ; i < listArray.length ; i++ )
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252 for ( var j in listArray[i] )
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254 if ( j != 'contents' )
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255 s.push( j + ":" + listArray[i][j] + "; " ) ;
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258 var docFrag = doc.createDocumentFragment() ;
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259 var tmpNode = doc.createElement( 'span' ) ;
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260 for ( var k = 0 ; k < listArray[i][j].length ; k++ )
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261 docFrag.appendChild( listArray[i][j][k].cloneNode( true ) ) ;
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262 tmpNode.appendChild( docFrag ) ;
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263 s.push( j + ":" + tmpNode.innerHTML + "; ") ;
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268 alert( s.join('') ) ;
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270 PrintArray( listArray, FCK.EditorDocument ) ;
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273 // Convert the array back to a DOM forest (yes we might have a few subtrees now).
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274 // And replace the old list with the new forest.
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275 var newList = FCKDomTools.ArrayToList( listArray ) ;
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277 listNode.parentNode.replaceChild( newList.listNode, listNode ) ;
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279 // Clean up the markers.
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280 FCKDomTools.ClearAllMarkers( markerObj ) ;
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