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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8 var guardElements = { table:1, ul:1, ol:1, blockquote:1, div:1 },
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9 directSelectionGuardElements = {},
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10 // All guard elements which can have a direction applied on them.
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11 allGuardElements = {};
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12 CKEDITOR.tools.extend( directSelectionGuardElements, guardElements, { tr:1, p:1, div:1, li:1 } );
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13 CKEDITOR.tools.extend( allGuardElements, directSelectionGuardElements, { td:1 } );
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15 function onSelectionChange( e )
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17 setToolbarStates( e );
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18 handleMixedDirContent( e );
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21 function setToolbarStates( evt )
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23 var editor = evt.editor,
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24 path = evt.data.path;
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25 var useComputedState = editor.config.useComputedState,
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28 useComputedState = useComputedState === undefined || useComputedState;
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30 // We can use computedState provided by the browser or traverse parents manually.
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31 if ( !useComputedState )
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32 selectedElement = getElementForDirection( path.lastElement );
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34 selectedElement = selectedElement || path.block || path.blockLimit;
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36 // If we're having BODY here, user probably done CTRL+A, let's try to get the enclosed node, if any.
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37 selectedElement.is( 'body' ) &&
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38 ( selectedElement = editor.getSelection().getRanges()[ 0 ].getEnclosedNode() );
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40 if ( !selectedElement )
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43 var selectionDir = useComputedState ?
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44 selectedElement.getComputedStyle( 'direction' ) :
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45 selectedElement.getStyle( 'direction' ) || selectedElement.getAttribute( 'dir' );
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47 editor.getCommand( 'bidirtl' ).setState( selectionDir == 'rtl' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
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48 editor.getCommand( 'bidiltr' ).setState( selectionDir == 'ltr' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
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51 function handleMixedDirContent( evt )
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53 var editor = evt.editor,
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54 chromeRoot = editor.container.getChild( 1 ),
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55 directionNode = evt.data.path.block || evt.data.path.blockLimit;
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57 if ( directionNode && editor.lang.dir != directionNode.getComputedStyle( 'direction' ) )
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58 chromeRoot.addClass( 'cke_mixed_dir_content' );
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60 chromeRoot.removeClass( 'cke_mixed_dir_content' );
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64 * Returns element with possibility of applying the direction.
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67 function getElementForDirection( node )
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69 while ( node && !( node.getName() in allGuardElements || node.is( 'body' ) ) )
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71 var parent = node.getParent();
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81 function switchDir( element, dir, editor, database )
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83 // Mark this element as processed by switchDir.
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84 CKEDITOR.dom.element.setMarker( database, element, 'bidi_processed', 1 );
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86 // Check whether one of the ancestors has already been styled.
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87 var parent = element;
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88 while ( ( parent = parent.getParent() ) && !parent.is( 'body' ) )
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90 if ( parent.getCustomData( 'bidi_processed' ) )
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92 // Ancestor style must dominate.
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93 element.removeStyle( 'direction' );
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94 element.removeAttribute( 'dir' );
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99 var useComputedState = ( 'useComputedState' in editor.config ) ? editor.config.useComputedState : 1;
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101 var elementDir = useComputedState ? element.getComputedStyle( 'direction' )
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102 : element.getStyle( 'direction' ) || element.hasAttribute( 'dir' );
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104 // Stop if direction is same as present.
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105 if ( elementDir == dir )
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108 // Reuse computedState if we already have it.
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109 var dirBefore = useComputedState ? elementDir : element.getComputedStyle( 'direction' );
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111 // Clear direction on this element.
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112 element.removeStyle( 'direction' );
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114 // Do the second check when computed state is ON, to check
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115 // if we need to apply explicit direction on this element.
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116 if ( useComputedState )
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118 element.removeAttribute( 'dir' );
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119 if ( dir != element.getComputedStyle( 'direction' ) )
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120 element.setAttribute( 'dir', dir );
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123 // Set new direction for this element.
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124 element.setAttribute( 'dir', dir );
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126 // If the element direction changed, we need to switch the margins of
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127 // the element and all its children, so it will get really reflected
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128 // like a mirror. (#5910)
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129 if ( dir != dirBefore )
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131 editor.fire( 'dirChanged',
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138 editor.forceNextSelectionCheck();
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143 function getFullySelected( range, elements, enterMode )
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145 var ancestor = range.getCommonAncestor( false, true );
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147 range = range.clone();
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148 range.enlarge( enterMode == CKEDITOR.ENTER_BR ?
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149 CKEDITOR.ENLARGE_LIST_ITEM_CONTENTS
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150 : CKEDITOR.ENLARGE_BLOCK_CONTENTS );
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152 if ( range.checkBoundaryOfElement( ancestor, CKEDITOR.START )
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153 && range.checkBoundaryOfElement( ancestor, CKEDITOR.END ) )
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156 while ( ancestor && ancestor.type == CKEDITOR.NODE_ELEMENT
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157 && ( parent = ancestor.getParent() )
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158 && parent.getChildCount() == 1
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159 && !( ancestor.getName() in elements ) )
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162 return ancestor.type == CKEDITOR.NODE_ELEMENT
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163 && ( ancestor.getName() in elements )
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168 function bidiCommand( dir )
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170 return function( editor )
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172 var selection = editor.getSelection(),
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173 enterMode = editor.config.enterMode,
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174 ranges = selection.getRanges();
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176 if ( ranges && ranges.length )
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180 // Creates bookmarks for selection, as we may split some blocks.
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181 var bookmarks = selection.createBookmarks();
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183 var rangeIterator = ranges.createIterator(),
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187 while ( ( range = rangeIterator.getNextRange( 1 ) ) )
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189 // Apply do directly selected elements from guardElements.
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190 var selectedElement = range.getEnclosedNode();
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192 // If this is not our element of interest, apply to fully selected elements from guardElements.
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193 if ( !selectedElement || selectedElement
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194 && !( selectedElement.type == CKEDITOR.NODE_ELEMENT && selectedElement.getName() in directSelectionGuardElements )
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196 selectedElement = getFullySelected( range, guardElements, enterMode );
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198 if ( selectedElement && !selectedElement.isReadOnly() )
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199 switchDir( selectedElement, dir, editor, database );
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204 // Walker searching for guardElements.
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205 var walker = new CKEDITOR.dom.walker( range );
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207 var start = bookmarks[ i ].startNode,
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208 end = bookmarks[ i++ ].endNode;
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210 walker.evaluator = function( node )
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212 return !! ( node.type == CKEDITOR.NODE_ELEMENT
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213 && node.getName() in guardElements
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214 && !( node.getName() == ( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' )
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215 && node.getParent().type == CKEDITOR.NODE_ELEMENT
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216 && node.getParent().getName() == 'blockquote' )
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217 // Element must be fully included in the range as well. (#6485).
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218 && node.getPosition( start ) & CKEDITOR.POSITION_FOLLOWING
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219 && ( ( node.getPosition( end ) & CKEDITOR.POSITION_PRECEDING + CKEDITOR.POSITION_CONTAINS ) == CKEDITOR.POSITION_PRECEDING ) );
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222 while ( ( block = walker.next() ) )
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223 switchDir( block, dir, editor, database );
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225 iterator = range.createIterator();
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226 iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;
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228 while ( ( block = iterator.getNextParagraph( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' ) ) )
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229 !block.isReadOnly() && switchDir( block, dir, editor, database );
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232 CKEDITOR.dom.element.clearAllMarkers( database );
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234 editor.forceNextSelectionCheck();
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235 // Restore selection position.
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236 selection.selectBookmarks( bookmarks );
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243 CKEDITOR.plugins.add( 'bidi',
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245 requires : [ 'styles', 'button' ],
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247 init : function( editor )
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249 // All buttons use the same code to register. So, to avoid
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250 // duplications, let's use this tool function.
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251 var addButtonCommand = function( buttonName, buttonLabel, commandName, commandExec )
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253 editor.addCommand( commandName, new CKEDITOR.command( editor, { exec : commandExec }) );
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255 editor.ui.addButton( buttonName,
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257 label : buttonLabel,
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258 command : commandName
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262 var lang = editor.lang.bidi;
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264 addButtonCommand( 'BidiLtr', lang.ltr, 'bidiltr', bidiCommand( 'ltr' ) );
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265 addButtonCommand( 'BidiRtl', lang.rtl, 'bidirtl', bidiCommand( 'rtl' ) );
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267 editor.on( 'selectionChange', onSelectionChange );
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274 * Fired when the language direction of an element is changed
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275 * @name CKEDITOR.editor#dirChanged
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277 * @param {CKEDITOR.editor} editor This editor instance.
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278 * @param {Object} eventData.node The element that is being changed.
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279 * @param {String} eventData.dir The new direction.
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