2 Copyright (c) 2003-2010, 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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14 var isNotWhitespaces = CKEDITOR.dom.walker.whitespaces( true ),
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15 isNotBookmark = CKEDITOR.dom.walker.bookmark( false, true );
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17 function setState( editor, state )
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19 editor.getCommand( this.name ).setState( state );
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22 function onSelectionChange( evt )
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24 var elements = evt.data.path.elements,
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26 editor = evt.editor;
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28 for ( var i = 0 ; i < elements.length ; i++ )
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30 if ( elements[i].getName() == 'li' )
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32 listItem = elements[i];
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35 if ( listNodeNames[ elements[i].getName() ] )
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37 listNode = elements[i];
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44 if ( this.name == 'outdent' )
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45 return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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48 while ( listItem && ( listItem = listItem.getPrevious( CKEDITOR.dom.walker.whitespaces( true ) ) ) )
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50 if ( listItem.getName && listItem.getName() == 'li' )
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51 return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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53 return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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57 if ( !this.useIndentClasses && this.name == 'indent' )
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58 return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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60 var path = evt.data.path,
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61 firstBlock = path.block || path.blockLimit;
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63 return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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65 if ( this.useIndentClasses )
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67 var indentClass = firstBlock.$.className.match( this.classNameRegex ),
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71 indentClass = indentClass[1];
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72 indentStep = this.indentClassMap[ indentClass ];
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74 if ( ( this.name == 'outdent' && !indentStep ) ||
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75 ( this.name == 'indent' && indentStep == editor.config.indentClasses.length ) )
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76 return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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77 return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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81 var indent = parseInt( firstBlock.getStyle( this.indentCssProperty ), 10 );
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82 if ( isNaN( indent ) )
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85 return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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86 return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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90 function indentList( editor, range, listNode )
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92 // Our starting and ending points of the range might be inside some blocks under a list item...
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93 // So before playing with the iterator, we need to expand the block to include the list items.
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94 var startContainer = range.startContainer,
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95 endContainer = range.endContainer;
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96 while ( startContainer && !startContainer.getParent().equals( listNode ) )
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97 startContainer = startContainer.getParent();
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98 while ( endContainer && !endContainer.getParent().equals( listNode ) )
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99 endContainer = endContainer.getParent();
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101 if ( !startContainer || !endContainer )
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104 // Now we can iterate over the individual items on the same tree depth.
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105 var block = startContainer,
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108 while ( !stopFlag )
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110 if ( block.equals( endContainer ) )
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112 itemsToMove.push( block );
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113 block = block.getNext();
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115 if ( itemsToMove.length < 1 )
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118 // Do indent or outdent operations on the array model of the list, not the
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119 // list's DOM tree itself. The array model demands that it knows as much as
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120 // possible about the surrounding lists, we need to feed it the further
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121 // ancestor node that is still a list.
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122 var listParents = listNode.getParents( true );
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123 for ( var i = 0 ; i < listParents.length ; i++ )
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125 if ( listParents[i].getName && listNodeNames[ listParents[i].getName() ] )
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127 listNode = listParents[i];
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131 var indentOffset = this.name == 'indent' ? 1 : -1,
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132 startItem = itemsToMove[0],
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133 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, 0 );
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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 ( this.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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205 // Clean up the markers.
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206 CKEDITOR.dom.element.clearAllMarkers( database );
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209 function indentBlock( editor, range )
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211 var iterator = range.createIterator(),
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212 enterMode = editor.config.enterMode;
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213 iterator.enforceRealBlocks = true;
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214 iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;
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216 while ( ( block = iterator.getNextParagraph() ) )
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219 if ( this.useIndentClasses )
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221 // Transform current class name to indent step index.
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222 var indentClass = block.$.className.match( this.classNameRegex ),
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226 indentClass = indentClass[1];
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227 indentStep = this.indentClassMap[ indentClass ];
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230 // Operate on indent step index, transform indent step index back to class
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232 if ( this.name == 'outdent' )
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236 indentStep = Math.min( indentStep, editor.config.indentClasses.length );
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237 indentStep = Math.max( indentStep, 0 );
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238 var className = CKEDITOR.tools.ltrim( block.$.className.replace( this.classNameRegex, '' ) );
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239 if ( indentStep < 1 )
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240 block.$.className = className;
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242 block.$.className = CKEDITOR.tools.ltrim( className + ' ' + editor.config.indentClasses[ indentStep - 1 ] );
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246 var currentOffset = parseInt( block.getStyle( this.indentCssProperty ), 10 );
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247 if ( isNaN( currentOffset ) )
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249 currentOffset += ( this.name == 'indent' ? 1 : -1 ) * editor.config.indentOffset;
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250 currentOffset = Math.max( currentOffset, 0 );
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251 currentOffset = Math.ceil( currentOffset / editor.config.indentOffset ) * editor.config.indentOffset;
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252 block.setStyle( this.indentCssProperty, currentOffset ? currentOffset + editor.config.indentUnit : '' );
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253 if ( block.getAttribute( 'style' ) === '' )
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254 block.removeAttribute( 'style' );
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259 function indentCommand( editor, name )
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262 this.useIndentClasses = editor.config.indentClasses && editor.config.indentClasses.length > 0;
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263 if ( this.useIndentClasses )
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265 this.classNameRegex = new RegExp( '(?:^|\\s+)(' + editor.config.indentClasses.join( '|' ) + ')(?=$|\\s)' );
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266 this.indentClassMap = {};
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267 for ( var i = 0 ; i < editor.config.indentClasses.length ; i++ )
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268 this.indentClassMap[ editor.config.indentClasses[i] ] = i + 1;
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271 this.indentCssProperty = editor.config.contentsLangDirection == 'ltr' ? 'margin-left' : 'margin-right';
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272 this.startDisabled = name == 'outdent';
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275 indentCommand.prototype = {
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276 exec : function( editor )
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278 var selection = editor.getSelection(),
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279 range = selection && selection.getRanges()[0];
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281 if ( !selection || !range )
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284 var bookmarks = selection.createBookmarks( true ),
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285 nearestListBlock = range.getCommonAncestor();
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287 while ( nearestListBlock && !( nearestListBlock.type == CKEDITOR.NODE_ELEMENT &&
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288 listNodeNames[ nearestListBlock.getName() ] ) )
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289 nearestListBlock = nearestListBlock.getParent();
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291 if ( nearestListBlock )
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292 indentList.call( this, editor, range, nearestListBlock );
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294 indentBlock.call( this, editor, range );
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297 editor.forceNextSelectionCheck();
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298 selection.selectBookmarks( bookmarks );
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302 CKEDITOR.plugins.add( 'indent',
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304 init : function( editor )
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306 // Register commands.
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307 var indent = new indentCommand( editor, 'indent' ),
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308 outdent = new indentCommand( editor, 'outdent' );
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309 editor.addCommand( 'indent', indent );
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310 editor.addCommand( 'outdent', outdent );
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312 // Register the toolbar buttons.
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313 editor.ui.addButton( 'Indent',
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315 label : editor.lang.indent,
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318 editor.ui.addButton( 'Outdent',
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320 label : editor.lang.outdent,
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321 command : 'outdent'
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324 // Register the state changing handlers.
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325 editor.on( 'selectionChange', CKEDITOR.tools.bind( onSelectionChange, indent ) );
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326 editor.on( 'selectionChange', CKEDITOR.tools.bind( onSelectionChange, outdent ) );
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329 requires : [ 'domiterator', 'list' ]
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333 CKEDITOR.tools.extend( CKEDITOR.config,
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337 indentClasses : null
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341 * Size of each indentation step
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344 * config.indentOffset = 40;
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348 * Unit for the indentation style
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351 * config.indentUnit = 'px';
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355 * List of classes to use for indenting the contents.
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358 * // Don't use classes for indenting. (this is the default value)
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359 * config.indentClasses = null;
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361 * // Use the classes 'Indent1', 'Indent2', 'Indent3'
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362 * config.indentClasses = ['Indent1', 'Indent2', 'Indent3'];
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366 * Size of each indentation step
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370 * config.indentOffset = 4;
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374 * Unit for the indentation style
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378 * config.indentUnit = 'em';
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382 * List of classes to use for indenting the contents. If it's null, no classes will be used
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383 * and instead the {@link #indentUnit} and {@link #indentOffset} properties will be used.
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387 * // Use the classes 'Indent1', 'Indent2', 'Indent3'
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388 * config.indentClasses = ['Indent1', 'Indent2', 'Indent3'];
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