2 Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
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3 For licensing, see LICENSE.html or http://ckeditor.com/license
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7 * @file Increse and decrease indent commands.
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12 var listNodeNames = { ol : 1, ul : 1 },
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13 isNotWhitespaces = CKEDITOR.dom.walker.whitespaces( true ),
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14 isNotBookmark = CKEDITOR.dom.walker.bookmark( false, true );
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16 function onSelectionChange( evt )
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18 if ( evt.editor.readOnly )
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21 var editor = evt.editor,
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22 elementPath = evt.data.path,
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23 list = elementPath && elementPath.contains( listNodeNames ),
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24 firstBlock = elementPath.block || elementPath.blockLimit;
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27 return this.setState( CKEDITOR.TRISTATE_OFF );
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29 if ( !this.useIndentClasses && this.name == 'indent' )
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30 return this.setState( CKEDITOR.TRISTATE_OFF );
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33 return this.setState( CKEDITOR.TRISTATE_DISABLED );
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35 if ( this.useIndentClasses )
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37 var indentClass = firstBlock.$.className.match( this.classNameRegex ),
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41 indentClass = indentClass[1];
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42 indentStep = this.indentClassMap[ indentClass ];
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44 if ( ( this.name == 'outdent' && !indentStep ) ||
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45 ( this.name == 'indent' && indentStep == editor.config.indentClasses.length ) )
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46 return this.setState( CKEDITOR.TRISTATE_DISABLED );
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47 return this.setState( CKEDITOR.TRISTATE_OFF );
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51 var indent = parseInt( firstBlock.getStyle( getIndentCssProperty( firstBlock ) ), 10 );
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52 if ( isNaN( indent ) )
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55 return this.setState( CKEDITOR.TRISTATE_DISABLED );
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56 return this.setState( CKEDITOR.TRISTATE_OFF );
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60 function indentCommand( editor, name )
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63 this.useIndentClasses = editor.config.indentClasses && editor.config.indentClasses.length > 0;
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64 if ( this.useIndentClasses )
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66 this.classNameRegex = new RegExp( '(?:^|\\s+)(' + editor.config.indentClasses.join( '|' ) + ')(?=$|\\s)' );
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67 this.indentClassMap = {};
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68 for ( var i = 0 ; i < editor.config.indentClasses.length ; i++ )
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69 this.indentClassMap[ editor.config.indentClasses[i] ] = i + 1;
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72 this.startDisabled = name == 'outdent';
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75 // Returns the CSS property to be used for identing a given element.
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76 function getIndentCssProperty( element, dir )
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78 return ( dir || element.getComputedStyle( 'direction' ) ) == 'ltr' ? 'margin-left' : 'margin-right';
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81 function isListItem( node )
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83 return node.type = CKEDITOR.NODE_ELEMENT && node.is( 'li' );
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86 indentCommand.prototype = {
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87 exec : function( editor )
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89 var self = this, database = {};
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91 function indentList( listNode )
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93 // Our starting and ending points of the range might be inside some blocks under a list item...
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94 // So before playing with the iterator, we need to expand the block to include the list items.
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95 var startContainer = range.startContainer,
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96 endContainer = range.endContainer;
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97 while ( startContainer && !startContainer.getParent().equals( listNode ) )
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98 startContainer = startContainer.getParent();
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99 while ( endContainer && !endContainer.getParent().equals( listNode ) )
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100 endContainer = endContainer.getParent();
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102 if ( !startContainer || !endContainer )
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105 // Now we can iterate over the individual items on the same tree depth.
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106 var block = startContainer,
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109 while ( !stopFlag )
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111 if ( block.equals( endContainer ) )
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113 itemsToMove.push( block );
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114 block = block.getNext();
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116 if ( itemsToMove.length < 1 )
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119 // Do indent or outdent operations on the array model of the list, not the
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120 // list's DOM tree itself. The array model demands that it knows as much as
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121 // possible about the surrounding lists, we need to feed it the further
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122 // ancestor node that is still a list.
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123 var listParents = listNode.getParents( true );
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124 for ( var i = 0 ; i < listParents.length ; i++ )
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126 if ( listParents[i].getName && listNodeNames[ listParents[i].getName() ] )
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128 listNode = listParents[i];
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132 var indentOffset = self.name == 'indent' ? 1 : -1,
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133 startItem = itemsToMove[0],
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134 lastItem = itemsToMove[ itemsToMove.length - 1 ];
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136 // Convert the list DOM tree into a one dimensional array.
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137 var listArray = CKEDITOR.plugins.list.listToArray( listNode, database );
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139 // Apply indenting or outdenting on the array.
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140 var baseIndent = listArray[ lastItem.getCustomData( 'listarray_index' ) ].indent;
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141 for ( i = startItem.getCustomData( 'listarray_index' ); i <= lastItem.getCustomData( 'listarray_index' ); i++ )
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143 listArray[ i ].indent += indentOffset;
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144 // Make sure the newly created sublist get a brand-new element of the same type. (#5372)
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145 var listRoot = listArray[ i ].parent;
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146 listArray[ i ].parent = new CKEDITOR.dom.element( listRoot.getName(), listRoot.getDocument() );
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149 for ( i = lastItem.getCustomData( 'listarray_index' ) + 1 ;
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150 i < listArray.length && listArray[i].indent > baseIndent ; i++ )
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151 listArray[i].indent += indentOffset;
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153 // Convert the array back to a DOM forest (yes we might have a few subtrees now).
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154 // And replace the old list with the new forest.
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155 var newList = CKEDITOR.plugins.list.arrayToList( listArray, database, null, editor.config.enterMode, listNode.getDirection() );
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157 // Avoid nested <li> after outdent even they're visually same,
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158 // recording them for later refactoring.(#3982)
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159 if ( self.name == 'outdent' )
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161 var parentLiElement;
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162 if ( ( parentLiElement = listNode.getParent() ) && parentLiElement.is( 'li' ) )
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164 var children = newList.listNode.getChildren(),
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166 count = children.count(),
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169 for ( i = count - 1 ; i >= 0 ; i-- )
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171 if ( ( child = children.getItem( i ) ) && child.is && child.is( 'li' ) )
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172 pendingLis.push( child );
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178 newList.listNode.replace( listNode );
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180 // Move the nested <li> to be appeared after the parent.
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181 if ( pendingLis && pendingLis.length )
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183 for ( i = 0; i < pendingLis.length ; i++ )
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185 var li = pendingLis[ i ],
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186 followingList = li;
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188 // Nest preceding <ul>/<ol> inside current <li> if any.
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189 while ( ( followingList = followingList.getNext() ) &&
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190 followingList.is &&
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191 followingList.getName() in listNodeNames )
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193 // IE requires a filler NBSP for nested list inside empty list item,
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194 // otherwise the list item will be inaccessiable. (#4476)
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195 if ( CKEDITOR.env.ie && !li.getFirst( function( node ){ return isNotWhitespaces( node ) && isNotBookmark( node ); } ) )
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196 li.append( range.document.createText( '\u00a0' ) );
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198 li.append( followingList );
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201 li.insertAfter( parentLiElement );
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206 function indentBlock()
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208 var iterator = range.createIterator(),
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209 enterMode = editor.config.enterMode;
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210 iterator.enforceRealBlocks = true;
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211 iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;
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213 while ( ( block = iterator.getNextParagraph( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' ) ) )
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214 indentElement( block );
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217 function indentElement( element, dir )
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219 if ( element.getCustomData( 'indent_processed' ) )
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222 if ( self.useIndentClasses )
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224 // Transform current class name to indent step index.
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225 var indentClass = element.$.className.match( self.classNameRegex ),
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229 indentClass = indentClass[1];
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230 indentStep = self.indentClassMap[ indentClass ];
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233 // Operate on indent step index, transform indent step index back to class
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235 if ( self.name == 'outdent' )
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240 if ( indentStep < 0 )
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243 indentStep = Math.min( indentStep, editor.config.indentClasses.length );
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244 indentStep = Math.max( indentStep, 0 );
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245 element.$.className = CKEDITOR.tools.ltrim( element.$.className.replace( self.classNameRegex, '' ) );
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246 if ( indentStep > 0 )
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247 element.addClass( editor.config.indentClasses[ indentStep - 1 ] );
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251 var indentCssProperty = getIndentCssProperty( element, dir ),
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252 currentOffset = parseInt( element.getStyle( indentCssProperty ), 10 );
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253 if ( isNaN( currentOffset ) )
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255 var indentOffset = editor.config.indentOffset || 40;
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256 currentOffset += ( self.name == 'indent' ? 1 : -1 ) * indentOffset;
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258 if ( currentOffset < 0 )
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261 currentOffset = Math.max( currentOffset, 0 );
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262 currentOffset = Math.ceil( currentOffset / indentOffset ) * indentOffset;
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263 element.setStyle( indentCssProperty, currentOffset ? currentOffset + ( editor.config.indentUnit || 'px' ) : '' );
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264 if ( element.getAttribute( 'style' ) === '' )
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265 element.removeAttribute( 'style' );
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268 CKEDITOR.dom.element.setMarker( database, element, 'indent_processed', 1 );
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272 var selection = editor.getSelection(),
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273 bookmarks = selection.createBookmarks( 1 ),
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274 ranges = selection && selection.getRanges( 1 ),
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278 var iterator = ranges.createIterator();
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279 while ( ( range = iterator.getNextRange() ) )
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281 var rangeRoot = range.getCommonAncestor(),
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282 nearestListBlock = rangeRoot;
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284 while ( nearestListBlock && !( nearestListBlock.type == CKEDITOR.NODE_ELEMENT &&
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285 listNodeNames[ nearestListBlock.getName() ] ) )
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286 nearestListBlock = nearestListBlock.getParent();
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288 // Avoid having selection enclose the entire list. (#6138)
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289 // [<ul><li>...</li></ul>] =><ul><li>[...]</li></ul>
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290 if ( !nearestListBlock )
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292 var selectedNode = range.getEnclosedNode();
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294 && selectedNode.type == CKEDITOR.NODE_ELEMENT
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295 && selectedNode.getName() in listNodeNames)
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297 range.setStartAt( selectedNode, CKEDITOR.POSITION_AFTER_START );
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298 range.setEndAt( selectedNode, CKEDITOR.POSITION_BEFORE_END );
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299 nearestListBlock = selectedNode;
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303 // Avoid selection anchors under list root.
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304 // <ul>[<li>...</li>]</ul> => <ul><li>[...]</li></ul>
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305 if ( nearestListBlock && range.startContainer.type == CKEDITOR.NODE_ELEMENT
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306 && range.startContainer.getName() in listNodeNames )
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308 var walker = new CKEDITOR.dom.walker( range );
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309 walker.evaluator = isListItem;
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310 range.startContainer = walker.next();
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313 if ( nearestListBlock && range.endContainer.type == CKEDITOR.NODE_ELEMENT
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314 && range.endContainer.getName() in listNodeNames )
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316 walker = new CKEDITOR.dom.walker( range );
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317 walker.evaluator = isListItem;
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318 range.endContainer = walker.previous();
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321 if ( nearestListBlock )
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323 var firstListItem = nearestListBlock.getFirst( isListItem ),
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324 hasMultipleItems = !!firstListItem.getNext( isListItem ),
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325 rangeStart = range.startContainer,
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326 indentWholeList = firstListItem.equals( rangeStart ) || firstListItem.contains( rangeStart );
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328 // Indent the entire list if cursor is inside the first list item. (#3893)
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329 // Only do that for indenting or when using indent classes or when there is something to outdent. (#6141)
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330 if ( !( indentWholeList &&
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331 ( self.name == 'indent' || self.useIndentClasses || parseInt( nearestListBlock.getStyle( getIndentCssProperty( nearestListBlock ) ), 10 ) ) &&
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332 indentElement( nearestListBlock, !hasMultipleItems && firstListItem.getDirection() ) ) )
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333 indentList( nearestListBlock );
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339 // Clean up the markers.
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340 CKEDITOR.dom.element.clearAllMarkers( database );
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342 editor.forceNextSelectionCheck();
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343 selection.selectBookmarks( bookmarks );
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347 CKEDITOR.plugins.add( 'indent',
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349 init : function( editor )
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351 // Register commands.
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352 var indent = editor.addCommand( 'indent', new indentCommand( editor, 'indent' ) ),
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353 outdent = editor.addCommand( 'outdent', new indentCommand( editor, 'outdent' ) );
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355 // Register the toolbar buttons.
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356 editor.ui.addButton( 'Indent',
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358 label : editor.lang.indent,
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361 editor.ui.addButton( 'Outdent',
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363 label : editor.lang.outdent,
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364 command : 'outdent'
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367 // Register the state changing handlers.
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368 editor.on( 'selectionChange', CKEDITOR.tools.bind( onSelectionChange, indent ) );
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369 editor.on( 'selectionChange', CKEDITOR.tools.bind( onSelectionChange, outdent ) );
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371 // [IE6/7] Raw lists are using margin instead of padding for visual indentation in wysiwyg mode. (#3893)
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372 if ( CKEDITOR.env.ie6Compat || CKEDITOR.env.ie7Compat )
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377 " margin-left: 0px;" +
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378 " padding-left: 40px;" +
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382 // Register dirChanged listener.
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383 editor.on( 'dirChanged', function( e )
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385 var range = new CKEDITOR.dom.range( editor.document );
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386 range.setStartBefore( e.data.node );
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387 range.setEndAfter( e.data.node );
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389 var walker = new CKEDITOR.dom.walker( range ),
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392 while ( ( node = walker.next() ) )
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394 if ( node.type == CKEDITOR.NODE_ELEMENT )
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396 // A child with the defined dir is to be ignored.
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397 if ( !node.equals( e.data.node ) && node.getDirection() )
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399 range.setStartAfter( node );
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400 walker = new CKEDITOR.dom.walker( range );
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404 // Switch alignment classes.
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405 var classes = editor.config.indentClasses;
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408 var suffix = ( e.data.dir == 'ltr' ) ? [ '_rtl', '' ] : [ '', '_rtl' ];
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409 for ( var i = 0; i < classes.length; i++ )
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411 if ( node.hasClass( classes[ i ] + suffix[ 0 ] ) )
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413 node.removeClass( classes[ i ] + suffix[ 0 ] );
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414 node.addClass( classes[ i ] + suffix[ 1 ] );
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419 // Switch the margins.
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420 var marginLeft = node.getStyle( 'margin-right' ),
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421 marginRight = node.getStyle( 'margin-left' );
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423 marginLeft ? node.setStyle( 'margin-left', marginLeft ) : node.removeStyle( 'margin-left' );
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424 marginRight ? node.setStyle( 'margin-right', marginRight ) : node.removeStyle( 'margin-right' );
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430 requires : [ 'domiterator', 'list' ]
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435 * Size of each indentation step
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436 * @name CKEDITOR.config.indentOffset
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440 * config.indentOffset = 4;
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444 * Unit for the indentation style
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445 * @name CKEDITOR.config.indentUnit
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449 * config.indentUnit = 'em';
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453 * List of classes to use for indenting the contents. If it's null, no classes will be used
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454 * and instead the {@link #indentUnit} and {@link #indentOffset} properties will be used.
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455 * @name CKEDITOR.config.indentClasses
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459 * // Use the classes 'Indent1', 'Indent2', 'Indent3'
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460 * config.indentClasses = ['Indent1', 'Indent2', 'Indent3'];
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