709 lines
21 KiB
JavaScript
709 lines
21 KiB
JavaScript
/*
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* FCKeditor - The text editor for Internet - http://www.fckeditor.net
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* Copyright (C) 2003-2009 Frederico Caldeira Knabben
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*
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* == BEGIN LICENSE ==
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*
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* Licensed under the terms of any of the following licenses at your
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* choice:
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*
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* - GNU General Public License Version 2 or later (the "GPL")
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* http://www.gnu.org/licenses/gpl.html
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*
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* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
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* http://www.gnu.org/licenses/lgpl.html
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*
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* - Mozilla Public License Version 1.1 or later (the "MPL")
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* http://www.mozilla.org/MPL/MPL-1.1.html
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*
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* == END LICENSE ==
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*
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* Controls the [Enter] keystroke behavior in a document.
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*/
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/*
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* Constructor.
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* @targetDocument : the target document.
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* @enterMode : the behavior for the <Enter> keystroke.
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* May be "p", "div", "br". Default is "p".
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* @shiftEnterMode : the behavior for the <Shift>+<Enter> keystroke.
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* May be "p", "div", "br". Defaults to "br".
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*/
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var FCKEnterKey = function( targetWindow, enterMode, shiftEnterMode, tabSpaces )
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{
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this.Window = targetWindow ;
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this.EnterMode = enterMode || 'p' ;
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this.ShiftEnterMode = shiftEnterMode || 'br' ;
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// Setup the Keystroke Handler.
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var oKeystrokeHandler = new FCKKeystrokeHandler( false ) ;
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oKeystrokeHandler._EnterKey = this ;
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oKeystrokeHandler.OnKeystroke = FCKEnterKey_OnKeystroke ;
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oKeystrokeHandler.SetKeystrokes( [
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[ 13 , 'Enter' ],
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[ SHIFT + 13, 'ShiftEnter' ],
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[ 8 , 'Backspace' ],
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[ CTRL + 8 , 'CtrlBackspace' ],
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[ 46 , 'Delete' ]
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] ) ;
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this.TabText = '' ;
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// Safari by default inserts 4 spaces on TAB, while others make the editor
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// loose focus. So, we need to handle it here to not include those spaces.
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if ( tabSpaces > 0 || FCKBrowserInfo.IsSafari )
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{
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while ( tabSpaces-- )
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this.TabText += '\xa0' ;
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oKeystrokeHandler.SetKeystrokes( [ 9, 'Tab' ] );
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}
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oKeystrokeHandler.AttachToElement( targetWindow.document ) ;
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}
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function FCKEnterKey_OnKeystroke( keyCombination, keystrokeValue )
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{
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var oEnterKey = this._EnterKey ;
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try
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{
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switch ( keystrokeValue )
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{
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case 'Enter' :
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return oEnterKey.DoEnter() ;
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break ;
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case 'ShiftEnter' :
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return oEnterKey.DoShiftEnter() ;
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break ;
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case 'Backspace' :
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return oEnterKey.DoBackspace() ;
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break ;
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case 'Delete' :
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return oEnterKey.DoDelete() ;
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break ;
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case 'Tab' :
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return oEnterKey.DoTab() ;
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break ;
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case 'CtrlBackspace' :
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return oEnterKey.DoCtrlBackspace() ;
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break ;
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}
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}
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catch (e)
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{
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// If for any reason we are not able to handle it, go
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// ahead with the browser default behavior.
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}
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return false ;
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}
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/*
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* Executes the <Enter> key behavior.
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*/
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FCKEnterKey.prototype.DoEnter = function( mode, hasShift )
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{
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// Save an undo snapshot before doing anything
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FCKUndo.SaveUndoStep() ;
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this._HasShift = ( hasShift === true ) ;
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var parentElement = FCKSelection.GetParentElement() ;
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var parentPath = new FCKElementPath( parentElement ) ;
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var sMode = mode || this.EnterMode ;
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if ( sMode == 'br' || parentPath.Block && parentPath.Block.tagName.toLowerCase() == 'pre' )
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return this._ExecuteEnterBr() ;
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else
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return this._ExecuteEnterBlock( sMode ) ;
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}
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/*
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* Executes the <Shift>+<Enter> key behavior.
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*/
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FCKEnterKey.prototype.DoShiftEnter = function()
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{
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return this.DoEnter( this.ShiftEnterMode, true ) ;
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}
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/*
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* Executes the <Backspace> key behavior.
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*/
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FCKEnterKey.prototype.DoBackspace = function()
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{
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var bCustom = false ;
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// Get the current selection.
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var oRange = new FCKDomRange( this.Window ) ;
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oRange.MoveToSelection() ;
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// Kludge for #247
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if ( FCKBrowserInfo.IsIE && this._CheckIsAllContentsIncluded( oRange, this.Window.document.body ) )
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{
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this._FixIESelectAllBug( oRange ) ;
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return true ;
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}
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var isCollapsed = oRange.CheckIsCollapsed() ;
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if ( !isCollapsed )
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{
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// Bug #327, Backspace with an img selection would activate the default action in IE.
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// Let's override that with our logic here.
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if ( FCKBrowserInfo.IsIE && this.Window.document.selection.type.toLowerCase() == "control" )
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{
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var controls = this.Window.document.selection.createRange() ;
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for ( var i = controls.length - 1 ; i >= 0 ; i-- )
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{
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var el = controls.item( i ) ;
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el.parentNode.removeChild( el ) ;
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}
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return true ;
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}
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return false ;
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}
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// On IE, it is better for us handle the deletion if the caret is preceeded
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// by a <br> (#1383).
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if ( FCKBrowserInfo.IsIE )
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{
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var previousElement = FCKDomTools.GetPreviousSourceElement( oRange.StartNode, true ) ;
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if ( previousElement && previousElement.nodeName.toLowerCase() == 'br' )
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{
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// Create a range that starts after the <br> and ends at the
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// current range position.
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var testRange = oRange.Clone() ;
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testRange.SetStart( previousElement, 4 ) ;
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// If that range is empty, we can proceed cleaning that <br> manually.
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if ( testRange.CheckIsEmpty() )
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{
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previousElement.parentNode.removeChild( previousElement ) ;
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return true ;
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}
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}
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}
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var oStartBlock = oRange.StartBlock ;
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var oEndBlock = oRange.EndBlock ;
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// The selection boundaries must be in the same "block limit" element
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if ( oRange.StartBlockLimit == oRange.EndBlockLimit && oStartBlock && oEndBlock )
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{
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if ( !isCollapsed )
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{
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var bEndOfBlock = oRange.CheckEndOfBlock() ;
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oRange.DeleteContents() ;
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if ( oStartBlock != oEndBlock )
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{
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oRange.SetStart(oEndBlock,1) ;
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oRange.SetEnd(oEndBlock,1) ;
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// if ( bEndOfBlock )
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// oEndBlock.parentNode.removeChild( oEndBlock ) ;
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}
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oRange.Select() ;
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bCustom = ( oStartBlock == oEndBlock ) ;
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}
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if ( oRange.CheckStartOfBlock() )
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{
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var oCurrentBlock = oRange.StartBlock ;
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var ePrevious = FCKDomTools.GetPreviousSourceElement( oCurrentBlock, true, [ 'BODY', oRange.StartBlockLimit.nodeName ], ['UL','OL'] ) ;
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bCustom = this._ExecuteBackspace( oRange, ePrevious, oCurrentBlock ) ;
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}
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else if ( FCKBrowserInfo.IsGeckoLike )
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{
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// Firefox and Opera (#1095) loose the selection when executing
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// CheckStartOfBlock, so we must reselect.
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oRange.Select() ;
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}
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}
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oRange.Release() ;
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return bCustom ;
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}
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FCKEnterKey.prototype.DoCtrlBackspace = function()
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{
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FCKUndo.SaveUndoStep() ;
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var oRange = new FCKDomRange( this.Window ) ;
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oRange.MoveToSelection() ;
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if ( FCKBrowserInfo.IsIE && this._CheckIsAllContentsIncluded( oRange, this.Window.document.body ) )
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{
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this._FixIESelectAllBug( oRange ) ;
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return true ;
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}
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return false ;
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}
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FCKEnterKey.prototype._ExecuteBackspace = function( range, previous, currentBlock )
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{
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var bCustom = false ;
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// We could be in a nested LI.
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if ( !previous && currentBlock && currentBlock.nodeName.IEquals( 'LI' ) && currentBlock.parentNode.parentNode.nodeName.IEquals( 'LI' ) )
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{
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this._OutdentWithSelection( currentBlock, range ) ;
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return true ;
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}
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if ( previous && previous.nodeName.IEquals( 'LI' ) )
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{
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var oNestedList = FCKDomTools.GetLastChild( previous, ['UL','OL'] ) ;
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while ( oNestedList )
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{
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previous = FCKDomTools.GetLastChild( oNestedList, 'LI' ) ;
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oNestedList = FCKDomTools.GetLastChild( previous, ['UL','OL'] ) ;
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}
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}
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if ( previous && currentBlock )
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{
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// If we are in a LI, and the previous block is not an LI, we must outdent it.
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if ( currentBlock.nodeName.IEquals( 'LI' ) && !previous.nodeName.IEquals( 'LI' ) )
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{
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this._OutdentWithSelection( currentBlock, range ) ;
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return true ;
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}
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// Take a reference to the parent for post processing cleanup.
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var oCurrentParent = currentBlock.parentNode ;
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var sPreviousName = previous.nodeName.toLowerCase() ;
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if ( FCKListsLib.EmptyElements[ sPreviousName ] != null || sPreviousName == 'table' )
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{
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FCKDomTools.RemoveNode( previous ) ;
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bCustom = true ;
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}
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else
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{
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// Remove the current block.
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FCKDomTools.RemoveNode( currentBlock ) ;
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// Remove any empty tag left by the block removal.
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while ( oCurrentParent.innerHTML.Trim().length == 0 )
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{
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var oParent = oCurrentParent.parentNode ;
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oParent.removeChild( oCurrentParent ) ;
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oCurrentParent = oParent ;
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}
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// Cleanup the previous and the current elements.
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FCKDomTools.LTrimNode( currentBlock ) ;
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FCKDomTools.RTrimNode( previous ) ;
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// Append a space to the previous.
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// Maybe it is not always desirable...
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// previous.appendChild( this.Window.document.createTextNode( ' ' ) ) ;
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// Set the range to the end of the previous element and bookmark it.
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range.SetStart( previous, 2, true ) ;
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range.Collapse( true ) ;
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var oBookmark = range.CreateBookmark( true ) ;
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// Move the contents of the block to the previous element and delete it.
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// But for some block types (e.g. table), moving the children to the previous block makes no sense.
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// So a check is needed. (See #1081)
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if ( ! currentBlock.tagName.IEquals( [ 'TABLE' ] ) )
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FCKDomTools.MoveChildren( currentBlock, previous ) ;
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// Place the selection at the bookmark.
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range.SelectBookmark( oBookmark ) ;
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bCustom = true ;
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}
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}
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return bCustom ;
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}
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/*
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* Executes the <Delete> key behavior.
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*/
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FCKEnterKey.prototype.DoDelete = function()
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{
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// Save an undo snapshot before doing anything
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// This is to conform with the behavior seen in MS Word
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FCKUndo.SaveUndoStep() ;
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// The <Delete> has the same effect as the <Backspace>, so we have the same
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// results if we just move to the next block and apply the same <Backspace> logic.
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var bCustom = false ;
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// Get the current selection.
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var oRange = new FCKDomRange( this.Window ) ;
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oRange.MoveToSelection() ;
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// Kludge for #247
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if ( FCKBrowserInfo.IsIE && this._CheckIsAllContentsIncluded( oRange, this.Window.document.body ) )
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{
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this._FixIESelectAllBug( oRange ) ;
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return true ;
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}
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// There is just one special case for collapsed selections at the end of a block.
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if ( oRange.CheckIsCollapsed() && oRange.CheckEndOfBlock( FCKBrowserInfo.IsGeckoLike ) )
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{
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var oCurrentBlock = oRange.StartBlock ;
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var eCurrentCell = FCKTools.GetElementAscensor( oCurrentBlock, 'td' );
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var eNext = FCKDomTools.GetNextSourceElement( oCurrentBlock, true, [ oRange.StartBlockLimit.nodeName ],
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['UL','OL','TR'], true ) ;
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// Bug #1323 : if we're in a table cell, and the next node belongs to a different cell, then don't
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// delete anything.
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if ( eCurrentCell )
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{
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var eNextCell = FCKTools.GetElementAscensor( eNext, 'td' );
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if ( eNextCell != eCurrentCell )
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return true ;
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}
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bCustom = this._ExecuteBackspace( oRange, oCurrentBlock, eNext ) ;
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}
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oRange.Release() ;
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return bCustom ;
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}
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/*
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* Executes the <Tab> key behavior.
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*/
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FCKEnterKey.prototype.DoTab = function()
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{
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var oRange = new FCKDomRange( this.Window );
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oRange.MoveToSelection() ;
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// If the user pressed <tab> inside a table, we should give him the default behavior ( moving between cells )
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// instead of giving him more non-breaking spaces. (Bug #973)
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var node = oRange._Range.startContainer ;
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while ( node )
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{
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if ( node.nodeType == 1 )
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{
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var tagName = node.tagName.toLowerCase() ;
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if ( tagName == "tr" || tagName == "td" || tagName == "th" || tagName == "tbody" || tagName == "table" )
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return false ;
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else
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break ;
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}
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node = node.parentNode ;
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}
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if ( this.TabText )
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{
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oRange.DeleteContents() ;
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oRange.InsertNode( this.Window.document.createTextNode( this.TabText ) ) ;
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oRange.Collapse( false ) ;
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oRange.Select() ;
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}
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return true ;
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}
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FCKEnterKey.prototype._ExecuteEnterBlock = function( blockTag, range )
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{
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// Get the current selection.
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var oRange = range || new FCKDomRange( this.Window ) ;
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var oSplitInfo = oRange.SplitBlock( blockTag ) ;
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if ( oSplitInfo )
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{
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// Get the current blocks.
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var ePreviousBlock = oSplitInfo.PreviousBlock ;
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var eNextBlock = oSplitInfo.NextBlock ;
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var bIsStartOfBlock = oSplitInfo.WasStartOfBlock ;
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var bIsEndOfBlock = oSplitInfo.WasEndOfBlock ;
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// If there is one block under a list item, modify the split so that the list item gets split as well. (Bug #1647)
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if ( eNextBlock )
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{
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if ( eNextBlock.parentNode.nodeName.IEquals( 'li' ) )
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{
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FCKDomTools.BreakParent( eNextBlock, eNextBlock.parentNode ) ;
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FCKDomTools.MoveNode( eNextBlock, eNextBlock.nextSibling, true ) ;
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}
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}
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else if ( ePreviousBlock && ePreviousBlock.parentNode.nodeName.IEquals( 'li' ) )
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{
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FCKDomTools.BreakParent( ePreviousBlock, ePreviousBlock.parentNode ) ;
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oRange.MoveToElementEditStart( ePreviousBlock.nextSibling );
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FCKDomTools.MoveNode( ePreviousBlock, ePreviousBlock.previousSibling ) ;
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}
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// If we have both the previous and next blocks, it means that the
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// boundaries were on separated blocks, or none of them where on the
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// block limits (start/end).
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if ( !bIsStartOfBlock && !bIsEndOfBlock )
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{
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// If the next block is an <li> with another list tree as the first child
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// We'll need to append a placeholder or the list item wouldn't be editable. (Bug #1420)
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if ( eNextBlock.nodeName.IEquals( 'li' ) && eNextBlock.firstChild
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&& eNextBlock.firstChild.nodeName.IEquals( ['ul', 'ol'] ) )
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eNextBlock.insertBefore( FCKTools.GetElementDocument( eNextBlock ).createTextNode( '\xa0' ), eNextBlock.firstChild ) ;
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// Move the selection to the end block.
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if ( eNextBlock )
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oRange.MoveToElementEditStart( eNextBlock ) ;
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}
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else
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{
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if ( bIsStartOfBlock && bIsEndOfBlock && ePreviousBlock.tagName.toUpperCase() == 'LI' )
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{
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oRange.MoveToElementStart( ePreviousBlock ) ;
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this._OutdentWithSelection( ePreviousBlock, oRange ) ;
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oRange.Release() ;
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return true ;
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}
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var eNewBlock ;
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if ( ePreviousBlock )
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{
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var sPreviousBlockTag = ePreviousBlock.tagName.toUpperCase() ;
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// If is a header tag, or we are in a Shift+Enter (#77),
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// create a new block element (later in the code).
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if ( !this._HasShift && !(/^H[1-6]$/).test( sPreviousBlockTag ) )
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{
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// Otherwise, duplicate the previous block.
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eNewBlock = FCKDomTools.CloneElement( ePreviousBlock ) ;
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}
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}
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else if ( eNextBlock )
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eNewBlock = FCKDomTools.CloneElement( eNextBlock ) ;
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if ( !eNewBlock )
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eNewBlock = this.Window.document.createElement( blockTag ) ;
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// Recreate the inline elements tree, which was available
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// before the hitting enter, so the same styles will be
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// available in the new block.
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var elementPath = oSplitInfo.ElementPath ;
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if ( elementPath )
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{
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for ( var i = 0, len = elementPath.Elements.length ; i < len ; i++ )
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{
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var element = elementPath.Elements[i] ;
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if ( element == elementPath.Block || element == elementPath.BlockLimit )
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break ;
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if ( FCKListsLib.InlineChildReqElements[ element.nodeName.toLowerCase() ] )
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{
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element = FCKDomTools.CloneElement( element ) ;
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FCKDomTools.MoveChildren( eNewBlock, element ) ;
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eNewBlock.appendChild( element ) ;
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}
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}
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}
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if ( FCKBrowserInfo.IsGeckoLike )
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FCKTools.AppendBogusBr( eNewBlock ) ;
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oRange.InsertNode( eNewBlock ) ;
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// This is tricky, but to make the new block visible correctly
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// we must select it.
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if ( FCKBrowserInfo.IsIE )
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{
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// Move the selection to the new block.
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oRange.MoveToElementEditStart( eNewBlock ) ;
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oRange.Select() ;
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}
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|
|
// Move the selection to the new block.
|
|
oRange.MoveToElementEditStart( bIsStartOfBlock && !bIsEndOfBlock ? eNextBlock : eNewBlock ) ;
|
|
}
|
|
|
|
if ( FCKBrowserInfo.IsGeckoLike )
|
|
{
|
|
if ( eNextBlock )
|
|
{
|
|
// If we have split the block, adds a temporary span at the
|
|
// range position and scroll relatively to it.
|
|
var tmpNode = this.Window.document.createElement( 'span' ) ;
|
|
|
|
// We need some content for Safari.
|
|
tmpNode.innerHTML = ' ';
|
|
|
|
oRange.InsertNode( tmpNode ) ;
|
|
FCKDomTools.ScrollIntoView( tmpNode, false ) ;
|
|
oRange.DeleteContents() ;
|
|
}
|
|
else
|
|
{
|
|
// We may use the above scroll logic for the new block case
|
|
// too, but it gives some weird result with Opera.
|
|
FCKDomTools.ScrollIntoView( eNextBlock || eNewBlock, false ) ;
|
|
}
|
|
}
|
|
|
|
oRange.Select() ;
|
|
}
|
|
|
|
// Release the resources used by the range.
|
|
oRange.Release() ;
|
|
|
|
return true ;
|
|
}
|
|
|
|
FCKEnterKey.prototype._ExecuteEnterBr = function( blockTag )
|
|
{
|
|
// Get the current selection.
|
|
var oRange = new FCKDomRange( this.Window ) ;
|
|
oRange.MoveToSelection() ;
|
|
|
|
// The selection boundaries must be in the same "block limit" element.
|
|
if ( oRange.StartBlockLimit == oRange.EndBlockLimit )
|
|
{
|
|
oRange.DeleteContents() ;
|
|
|
|
// Get the new selection (it is collapsed at this point).
|
|
oRange.MoveToSelection() ;
|
|
|
|
var bIsStartOfBlock = oRange.CheckStartOfBlock() ;
|
|
var bIsEndOfBlock = oRange.CheckEndOfBlock() ;
|
|
|
|
var sStartBlockTag = oRange.StartBlock ? oRange.StartBlock.tagName.toUpperCase() : '' ;
|
|
|
|
var bHasShift = this._HasShift ;
|
|
var bIsPre = false ;
|
|
|
|
if ( !bHasShift && sStartBlockTag == 'LI' )
|
|
return this._ExecuteEnterBlock( null, oRange ) ;
|
|
|
|
// If we are at the end of a header block.
|
|
if ( !bHasShift && bIsEndOfBlock && (/^H[1-6]$/).test( sStartBlockTag ) )
|
|
{
|
|
// Insert a BR after the current paragraph.
|
|
FCKDomTools.InsertAfterNode( oRange.StartBlock, this.Window.document.createElement( 'br' ) ) ;
|
|
|
|
// The space is required by Gecko only to make the cursor blink.
|
|
if ( FCKBrowserInfo.IsGecko )
|
|
FCKDomTools.InsertAfterNode( oRange.StartBlock, this.Window.document.createTextNode( '' ) ) ;
|
|
|
|
// IE and Gecko have different behaviors regarding the position.
|
|
oRange.SetStart( oRange.StartBlock.nextSibling, FCKBrowserInfo.IsIE ? 3 : 1 ) ;
|
|
}
|
|
else
|
|
{
|
|
var eLineBreak ;
|
|
bIsPre = sStartBlockTag.IEquals( 'pre' ) ;
|
|
if ( bIsPre )
|
|
eLineBreak = this.Window.document.createTextNode( FCKBrowserInfo.IsIE ? '\r' : '\n' ) ;
|
|
else
|
|
eLineBreak = this.Window.document.createElement( 'br' ) ;
|
|
|
|
oRange.InsertNode( eLineBreak ) ;
|
|
|
|
// The space is required by Gecko only to make the cursor blink.
|
|
if ( FCKBrowserInfo.IsGecko )
|
|
FCKDomTools.InsertAfterNode( eLineBreak, this.Window.document.createTextNode( '' ) ) ;
|
|
|
|
// If we are at the end of a block, we must be sure the bogus node is available in that block.
|
|
if ( bIsEndOfBlock && FCKBrowserInfo.IsGeckoLike )
|
|
FCKTools.AppendBogusBr( eLineBreak.parentNode ) ;
|
|
|
|
if ( FCKBrowserInfo.IsIE )
|
|
oRange.SetStart( eLineBreak, 4 ) ;
|
|
else
|
|
oRange.SetStart( eLineBreak.nextSibling, 1 ) ;
|
|
|
|
if ( ! FCKBrowserInfo.IsIE )
|
|
{
|
|
var dummy = null ;
|
|
if ( FCKBrowserInfo.IsOpera )
|
|
dummy = this.Window.document.createElement( 'span' ) ;
|
|
else
|
|
dummy = this.Window.document.createElement( 'br' ) ;
|
|
|
|
eLineBreak.parentNode.insertBefore( dummy, eLineBreak.nextSibling ) ;
|
|
|
|
FCKDomTools.ScrollIntoView( dummy, false ) ;
|
|
|
|
dummy.parentNode.removeChild( dummy ) ;
|
|
}
|
|
}
|
|
|
|
// This collapse guarantees the cursor will be blinking.
|
|
oRange.Collapse( true ) ;
|
|
|
|
oRange.Select( bIsPre ) ;
|
|
}
|
|
|
|
// Release the resources used by the range.
|
|
oRange.Release() ;
|
|
|
|
return true ;
|
|
}
|
|
|
|
// Outdents a LI, maintaining the selection defined on a range.
|
|
FCKEnterKey.prototype._OutdentWithSelection = function( li, range )
|
|
{
|
|
var oBookmark = range.CreateBookmark() ;
|
|
|
|
FCKListHandler.OutdentListItem( li ) ;
|
|
|
|
range.MoveToBookmark( oBookmark ) ;
|
|
range.Select() ;
|
|
}
|
|
|
|
// Is all the contents under a node included by a range?
|
|
FCKEnterKey.prototype._CheckIsAllContentsIncluded = function( range, node )
|
|
{
|
|
var startOk = false ;
|
|
var endOk = false ;
|
|
|
|
/*
|
|
FCKDebug.Output( 'sc='+range.StartContainer.nodeName+
|
|
',so='+range._Range.startOffset+
|
|
',ec='+range.EndContainer.nodeName+
|
|
',eo='+range._Range.endOffset ) ;
|
|
*/
|
|
if ( range.StartContainer == node || range.StartContainer == node.firstChild )
|
|
startOk = ( range._Range.startOffset == 0 ) ;
|
|
|
|
if ( range.EndContainer == node || range.EndContainer == node.lastChild )
|
|
{
|
|
var nodeLength = range.EndContainer.nodeType == 3 ? range.EndContainer.length : range.EndContainer.childNodes.length ;
|
|
endOk = ( range._Range.endOffset == nodeLength ) ;
|
|
}
|
|
|
|
return startOk && endOk ;
|
|
}
|
|
|
|
// Kludge for #247
|
|
FCKEnterKey.prototype._FixIESelectAllBug = function( range )
|
|
{
|
|
var doc = this.Window.document ;
|
|
doc.body.innerHTML = '' ;
|
|
var editBlock ;
|
|
if ( FCKConfig.EnterMode.IEquals( ['div', 'p'] ) )
|
|
{
|
|
editBlock = doc.createElement( FCKConfig.EnterMode ) ;
|
|
doc.body.appendChild( editBlock ) ;
|
|
}
|
|
else
|
|
editBlock = doc.body ;
|
|
|
|
range.MoveToNodeContents( editBlock ) ;
|
|
range.Collapse( true ) ;
|
|
range.Select() ;
|
|
range.Release() ;
|
|
}
|