328 lines
10 KiB
JavaScript
328 lines
10 KiB
JavaScript
/*
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Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
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For licensing, see LICENSE.html or http://ckeditor.com/license
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*/
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(function()
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{
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var guardElements = { table:1, ul:1, ol:1, blockquote:1, div:1 },
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directSelectionGuardElements = {},
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// All guard elements which can have a direction applied on them.
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allGuardElements = {};
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CKEDITOR.tools.extend( directSelectionGuardElements, guardElements, { tr:1, p:1, div:1, li:1 } );
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CKEDITOR.tools.extend( allGuardElements, directSelectionGuardElements, { td:1 } );
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function onSelectionChange( e )
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{
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setToolbarStates( e );
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handleMixedDirContent( e );
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}
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function setToolbarStates( evt )
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{
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var editor = evt.editor,
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path = evt.data.path;
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var useComputedState = editor.config.useComputedState,
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selectedElement;
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useComputedState = useComputedState === undefined || useComputedState;
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// We can use computedState provided by the browser or traverse parents manually.
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if ( !useComputedState )
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selectedElement = getElementForDirection( path.lastElement );
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selectedElement = selectedElement || path.block || path.blockLimit;
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// 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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selectedElement.is( 'body' ) &&
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( selectedElement = editor.getSelection().getRanges()[ 0 ].getEnclosedNode() );
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if ( !selectedElement )
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return;
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var selectionDir = useComputedState ?
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selectedElement.getComputedStyle( 'direction' ) :
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selectedElement.getStyle( 'direction' ) || selectedElement.getAttribute( 'dir' );
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editor.getCommand( 'bidirtl' ).setState( selectionDir == 'rtl' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
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editor.getCommand( 'bidiltr' ).setState( selectionDir == 'ltr' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
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}
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function handleMixedDirContent( evt )
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{
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var editor = evt.editor,
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directionNode = evt.data.path.block || evt.data.path.blockLimit;
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editor.fire( 'contentDirChanged', directionNode ? directionNode.getComputedStyle( 'direction' ) : editor.lang.dir );
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}
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/**
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* Returns element with possibility of applying the direction.
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* @param node
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*/
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function getElementForDirection( node )
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{
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while ( node && !( node.getName() in allGuardElements || node.is( 'body' ) ) )
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{
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var parent = node.getParent();
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if ( !parent )
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break;
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node = parent;
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}
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return node;
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}
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function switchDir( element, dir, editor, database )
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{
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if ( element.isReadOnly() )
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return;
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// Mark this element as processed by switchDir.
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CKEDITOR.dom.element.setMarker( database, element, 'bidi_processed', 1 );
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// Check whether one of the ancestors has already been styled.
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var parent = element;
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while ( ( parent = parent.getParent() ) && !parent.is( 'body' ) )
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{
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if ( parent.getCustomData( 'bidi_processed' ) )
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{
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// Ancestor style must dominate.
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element.removeStyle( 'direction' );
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element.removeAttribute( 'dir' );
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return;
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}
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}
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var useComputedState = ( 'useComputedState' in editor.config ) ? editor.config.useComputedState : 1;
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var elementDir = useComputedState ? element.getComputedStyle( 'direction' )
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: element.getStyle( 'direction' ) || element.hasAttribute( 'dir' );
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// Stop if direction is same as present.
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if ( elementDir == dir )
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return;
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// Clear direction on this element.
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element.removeStyle( 'direction' );
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// Do the second check when computed state is ON, to check
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// if we need to apply explicit direction on this element.
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if ( useComputedState )
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{
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element.removeAttribute( 'dir' );
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if ( dir != element.getComputedStyle( 'direction' ) )
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element.setAttribute( 'dir', dir );
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}
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else
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// Set new direction for this element.
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element.setAttribute( 'dir', dir );
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editor.forceNextSelectionCheck();
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return;
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}
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function getFullySelected( range, elements, enterMode )
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{
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var ancestor = range.getCommonAncestor( false, true );
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range = range.clone();
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range.enlarge( enterMode == CKEDITOR.ENTER_BR ?
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CKEDITOR.ENLARGE_LIST_ITEM_CONTENTS
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: CKEDITOR.ENLARGE_BLOCK_CONTENTS );
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if ( range.checkBoundaryOfElement( ancestor, CKEDITOR.START )
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&& range.checkBoundaryOfElement( ancestor, CKEDITOR.END ) )
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{
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var parent;
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while ( ancestor && ancestor.type == CKEDITOR.NODE_ELEMENT
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&& ( parent = ancestor.getParent() )
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&& parent.getChildCount() == 1
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&& !( ancestor.getName() in elements ) )
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ancestor = parent;
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return ancestor.type == CKEDITOR.NODE_ELEMENT
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&& ( ancestor.getName() in elements )
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&& ancestor;
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}
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}
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function bidiCommand( dir )
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{
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return function( editor )
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{
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var selection = editor.getSelection(),
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enterMode = editor.config.enterMode,
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ranges = selection.getRanges();
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if ( ranges && ranges.length )
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{
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var database = {};
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// Creates bookmarks for selection, as we may split some blocks.
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var bookmarks = selection.createBookmarks();
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var rangeIterator = ranges.createIterator(),
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range,
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i = 0;
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while ( ( range = rangeIterator.getNextRange( 1 ) ) )
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{
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// Apply do directly selected elements from guardElements.
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var selectedElement = range.getEnclosedNode();
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// If this is not our element of interest, apply to fully selected elements from guardElements.
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if ( !selectedElement || selectedElement
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&& !( selectedElement.type == CKEDITOR.NODE_ELEMENT && selectedElement.getName() in directSelectionGuardElements )
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)
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selectedElement = getFullySelected( range, guardElements, enterMode );
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selectedElement && switchDir( selectedElement, dir, editor, database );
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var iterator,
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block;
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// Walker searching for guardElements.
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var walker = new CKEDITOR.dom.walker( range );
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var start = bookmarks[ i ].startNode,
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end = bookmarks[ i++ ].endNode;
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walker.evaluator = function( node )
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{
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return !! ( node.type == CKEDITOR.NODE_ELEMENT
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&& node.getName() in guardElements
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&& !( node.getName() == ( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' )
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&& node.getParent().type == CKEDITOR.NODE_ELEMENT
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&& node.getParent().getName() == 'blockquote' )
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// Element must be fully included in the range as well. (#6485).
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&& node.getPosition( start ) & CKEDITOR.POSITION_FOLLOWING
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&& ( ( node.getPosition( end ) & CKEDITOR.POSITION_PRECEDING + CKEDITOR.POSITION_CONTAINS ) == CKEDITOR.POSITION_PRECEDING ) );
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};
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while ( ( block = walker.next() ) )
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switchDir( block, dir, editor, database );
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iterator = range.createIterator();
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iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;
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while ( ( block = iterator.getNextParagraph( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' ) ) )
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switchDir( block, dir, editor, database );
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}
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CKEDITOR.dom.element.clearAllMarkers( database );
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editor.forceNextSelectionCheck();
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// Restore selection position.
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selection.selectBookmarks( bookmarks );
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editor.focus();
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}
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};
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}
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CKEDITOR.plugins.add( 'bidi',
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{
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requires : [ 'styles', 'button' ],
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init : function( editor )
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{
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// All buttons use the same code to register. So, to avoid
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// duplications, let's use this tool function.
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var addButtonCommand = function( buttonName, buttonLabel, commandName, commandExec )
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{
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editor.addCommand( commandName, new CKEDITOR.command( editor, { exec : commandExec }) );
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editor.ui.addButton( buttonName,
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{
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label : buttonLabel,
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command : commandName
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});
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};
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var lang = editor.lang.bidi;
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addButtonCommand( 'BidiLtr', lang.ltr, 'bidiltr', bidiCommand( 'ltr' ) );
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addButtonCommand( 'BidiRtl', lang.rtl, 'bidirtl', bidiCommand( 'rtl' ) );
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editor.on( 'selectionChange', onSelectionChange );
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editor.on( 'contentDom', function()
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{
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editor.document.on( 'dirChanged', function( evt )
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{
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editor.fire( 'dirChanged',
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{
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node : evt.data,
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dir : evt.data.getDirection( 1 )
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} );
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});
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});
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}
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});
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// If the element direction changed, we need to switch the margins of
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// the element and all its children, so it will get really reflected
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// like a mirror. (#5910)
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function isOffline( el )
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{
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var html = el.getDocument().getBody().getParent();
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while ( el )
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{
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if ( el.equals( html ) )
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return false;
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el = el.getParent();
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}
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return true;
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}
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function dirChangeNotifier( org )
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{
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var isAttribute = org == elementProto.setAttribute,
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isRemoveAttribute = org == elementProto.removeAttribute,
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dirStyleRegexp = /\bdirection\s*:\s*(.*?)\s*(:?$|;)/;
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return function( name, val )
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{
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if ( !this.getDocument().equals( CKEDITOR.document ) )
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{
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var orgDir;
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if ( ( name == ( isAttribute || isRemoveAttribute ? 'dir' : 'direction' ) ||
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name == 'style' && ( isRemoveAttribute || dirStyleRegexp.test( val ) ) ) && !isOffline( this ) )
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{
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orgDir = this.getDirection( 1 );
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var retval = org.apply( this, arguments );
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if ( orgDir != this.getDirection( 1 ) )
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{
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this.getDocument().fire( 'dirChanged', this );
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return retval;
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}
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}
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}
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return org.apply( this, arguments );
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};
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}
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var elementProto = CKEDITOR.dom.element.prototype,
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methods = [ 'setStyle', 'removeStyle', 'setAttribute', 'removeAttribute' ];
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for ( var i = 0; i < methods.length; i++ )
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elementProto[ methods[ i ] ] = CKEDITOR.tools.override( elementProto[ methods [ i ] ], dirChangeNotifier );
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})();
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/**
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* Fired when the language direction of an element is changed
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* @name CKEDITOR.editor#dirChanged
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* @event
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* @param {CKEDITOR.editor} editor This editor instance.
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* @param {Object} eventData.node The element that is being changed.
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* @param {String} eventData.dir The new direction.
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*/
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/**
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* Fired when the language direction in the specific cursor position is changed
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* @name CKEDITOR.editor#contentDirChanged
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* @event
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* @param {String} eventData The direction in the current position.
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*/
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