Файл: fckeditor/editor/_source/classes/fckenterkey.js
Строк: 860
<?php
/*
* FCKeditor - The text editor for Internet - http://www.fckeditor.net
* Copyright (C) 2003-2008 Frederico Caldeira Knabben
*
* == BEGIN LICENSE ==
*
* Licensed under the terms of any of the following licenses at your
* choice:
*
* - GNU General Public License Version 2 or later (the "GPL")
* http://www.gnu.org/licenses/gpl.html
*
* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
* http://www.gnu.org/licenses/lgpl.html
*
* - Mozilla Public License Version 1.1 or later (the "MPL")
* http://www.mozilla.org/MPL/MPL-1.1.html
*
* == END LICENSE ==
*
* Controls the [Enter] keystroke behavior in a document.
*/
/*
* Constructor.
* @targetDocument : the target document.
* @enterMode : the behavior for the <Enter> keystroke.
* May be "p", "div", "br". Default is "p".
* @shiftEnterMode : the behavior for the <Shift>+<Enter> keystroke.
* May be "p", "div", "br". Defaults to "br".
*/
var FCKEnterKey = function( targetWindow, enterMode, shiftEnterMode, tabSpaces )
{
this.Window = targetWindow ;
this.EnterMode = enterMode || 'p' ;
this.ShiftEnterMode = shiftEnterMode || 'br' ;
// Setup the Keystroke Handler.
var oKeystrokeHandler = new FCKKeystrokeHandler( false ) ;
oKeystrokeHandler._EnterKey = this ;
oKeystrokeHandler.OnKeystroke = FCKEnterKey_OnKeystroke ;
oKeystrokeHandler.SetKeystrokes( [
[ 13 , 'Enter' ],
[ SHIFT + 13, 'ShiftEnter' ],
[ 8 , 'Backspace' ],
[ CTRL + 8 , 'CtrlBackspace' ],
[ 46 , 'Delete' ]
] ) ;
this.TabText = '' ;
// Safari by default inserts 4 spaces on TAB, while others make the editor
// loose focus. So, we need to handle it here to not include those spaces.
if ( tabSpaces > 0 || FCKBrowserInfo.IsSafari )
{
while ( tabSpaces-- )
this.TabText += 'xa0' ;
oKeystrokeHandler.SetKeystrokes( [ 9, 'Tab' ] );
}
oKeystrokeHandler.AttachToElement( targetWindow.document ) ;
}
function FCKEnterKey_OnKeystroke( keyCombination, keystrokeValue )
{
var oEnterKey = this._EnterKey ;
try
{
switch ( keystrokeValue )
{
case 'Enter' :
return oEnterKey.DoEnter() ;
break ;
case 'ShiftEnter' :
return oEnterKey.DoShiftEnter() ;
break ;
case 'Backspace' :
return oEnterKey.DoBackspace() ;
break ;
case 'Delete' :
return oEnterKey.DoDelete() ;
break ;
case 'Tab' :
return oEnterKey.DoTab() ;
break ;
case 'CtrlBackspace' :
return oEnterKey.DoCtrlBackspace() ;
break ;
}
}
catch (e)
{
// If for any reason we are not able to handle it, go
// ahead with the browser default behavior.
}
return false ;
}
/*
* Executes the <Enter> key behavior.
*/
FCKEnterKey.prototype.DoEnter = function( mode, hasShift )
{
// Save an undo snapshot before doing anything
FCKUndo.SaveUndoStep() ;
this._HasShift = ( hasShift === true ) ;
var parentElement = FCKSelection.GetParentElement() ;
var parentPath = new FCKElementPath( parentElement ) ;
var sMode = mode || this.EnterMode ;
if ( sMode == 'br' || parentPath.Block && parentPath.Block.tagName.toLowerCase() == 'pre' )
return this._ExecuteEnterBr() ;
else
return this._ExecuteEnterBlock( sMode ) ;
}
/*
* Executes the <Shift>+<Enter> key behavior.
*/
FCKEnterKey.prototype.DoShiftEnter = function()
{
return this.DoEnter( this.ShiftEnterMode, true ) ;
}
/*
* Executes the <Backspace> key behavior.
*/
FCKEnterKey.prototype.DoBackspace = function()
{
var bCustom = false ;
// Get the current selection.
var oRange = new FCKDomRange( this.Window ) ;
oRange.MoveToSelection() ;
// Kludge for #247
if ( FCKBrowserInfo.IsIE && this._CheckIsAllContentsIncluded( oRange, this.Window.document.body ) )
{
this._FixIESelectAllBug( oRange ) ;
return true ;
}
var isCollapsed = oRange.CheckIsCollapsed() ;
if ( !isCollapsed )
{
// Bug #327, Backspace with an img selection would activate the default action in IE.
// Let's override that with our logic here.
if ( FCKBrowserInfo.IsIE && this.Window.document.selection.type.toLowerCase() == "control" )
{
var controls = this.Window.document.selection.createRange() ;
for ( var i = controls.length - 1 ; i >= 0 ; i-- )
{
var el = controls.item( i ) ;
el.parentNode.removeChild( el ) ;
}
return true ;
}
return false ;
}
// On IE, it is better for us handle the deletion if the caret is preceeded
// by a <br> (#1383).
if ( FCKBrowserInfo.IsIE )
{
var previousElement = FCKDomTools.GetPreviousSourceElement( oRange.StartNode, true ) ;
if ( previousElement && previousElement.nodeName.toLowerCase() == 'br' )
{
// Create a range that starts after the <br> and ends at the
// current range position.
var testRange = oRange.Clone() ;
testRange.SetStart( previousElement, 4 ) ;
// If that range is empty, we can proceed cleaning that <br> manually.
if ( testRange.CheckIsEmpty() )
{
previousElement.parentNode.removeChild( previousElement ) ;
return true ;
}
}
}
var oStartBlock = oRange.StartBlock ;
var oEndBlock = oRange.EndBlock ;
// The selection boundaries must be in the same "block limit" element
if ( oRange.StartBlockLimit == oRange.EndBlockLimit && oStartBlock && oEndBlock )
{
if ( !isCollapsed )
{
var bEndOfBlock = oRange.CheckEndOfBlock() ;
oRange.DeleteContents() ;
if ( oStartBlock != oEndBlock )
{
oRange.SetStart(oEndBlock,1) ;
oRange.SetEnd(oEndBlock,1) ;
// if ( bEndOfBlock )
// oEndBlock.parentNode.removeChild( oEndBlock ) ;
}
oRange.Select() ;
bCustom = ( oStartBlock == oEndBlock ) ;
}
if ( oRange.CheckStartOfBlock() )
{
var oCurrentBlock = oRange.StartBlock ;
var ePrevious = FCKDomTools.GetPreviousSourceElement( oCurrentBlock, true, [ 'BODY', oRange.StartBlockLimit.nodeName ], ['UL','OL'] ) ;
bCustom = this._ExecuteBackspace( oRange, ePrevious, oCurrentBlock ) ;
}
else if ( FCKBrowserInfo.IsGeckoLike )
{
// Firefox and Opera (#1095) loose the selection when executing
// CheckStartOfBlock, so we must reselect.
oRange.Select() ;
}
}
oRange.Release() ;
return bCustom ;
}
FCKEnterKey.prototype.DoCtrlBackspace = function()
{
FCKUndo.SaveUndoStep() ;
var oRange = new FCKDomRange( this.Window ) ;
oRange.MoveToSelection() ;
if ( FCKBrowserInfo.IsIE && this._CheckIsAllContentsIncluded( oRange, this.Window.document.body ) )
{
this._FixIESelectAllBug( oRange ) ;
return true ;
}
return false ;
}
FCKEnterKey.prototype._ExecuteBackspace = function( range, previous, currentBlock )
{
var bCustom = false ;
// We could be in a nested LI.
if ( !previous && currentBlock && currentBlock.nodeName.IEquals( 'LI' ) && currentBlock.parentNode.parentNode.nodeName.IEquals( 'LI' ) )
{
this._OutdentWithSelection( currentBlock, range ) ;
return true ;
}
if ( previous && previous.nodeName.IEquals( 'LI' ) )
{
var oNestedList = FCKDomTools.GetLastChild( previous, ['UL','OL'] ) ;
while ( oNestedList )
{
previous = FCKDomTools.GetLastChild( oNestedList, 'LI' ) ;
oNestedList = FCKDomTools.GetLastChild( previous, ['UL','OL'] ) ;
}
}
if ( previous && currentBlock )
{
// If we are in a LI, and the previous block is not an LI, we must outdent it.
if ( currentBlock.nodeName.IEquals( 'LI' ) && !previous.nodeName.IEquals( 'LI' ) )
{
this._OutdentWithSelection( currentBlock, range ) ;
return true ;
}
// Take a reference to the parent for post processing cleanup.
var oCurrentParent = currentBlock.parentNode ;
var sPreviousName = previous.nodeName.toLowerCase() ;
if ( FCKListsLib.EmptyElements[ sPreviousName ] != null || sPreviousName == 'table' )
{
FCKDomTools.RemoveNode( previous ) ;
bCustom = true ;
}
else
{
// Remove the current block.
FCKDomTools.RemoveNode( currentBlock ) ;
// Remove any empty tag left by the block removal.
while ( oCurrentParent.innerHTML.Trim().length == 0 )
{
var oParent = oCurrentParent.parentNode ;
oParent.removeChild( oCurrentParent ) ;
oCurrentParent = oParent ;
}
// Cleanup the previous and the current elements.
FCKDomTools.LTrimNode( currentBlock ) ;
FCKDomTools.RTrimNode( previous ) ;
// Append a space to the previous.
// Maybe it is not always desirable...
// previous.appendChild( this.Window.document.createTextNode( ' ' ) ) ;
// Set the range to the end of the previous element and bookmark it.
range.SetStart( previous, 2, true ) ;
range.Collapse( true ) ;
var oBookmark = range.CreateBookmark( true ) ;
// Move the contents of the block to the previous element and delete it.
// But for some block types (e.g. table), moving the children to the previous block makes no sense.
// So a check is needed. (See #1081)
if ( ! currentBlock.tagName.IEquals( [ 'TABLE' ] ) )
FCKDomTools.MoveChildren( currentBlock, previous ) ;
// Place the selection at the bookmark.
range.SelectBookmark( oBookmark ) ;
bCustom = true ;
}
}
return bCustom ;
}
/*
* Executes the <Delete> key behavior.
*/
FCKEnterKey.prototype.DoDelete = function()
{
// Save an undo snapshot before doing anything
// This is to conform with the behavior seen in MS Word
FCKUndo.SaveUndoStep() ;
// The <Delete> has the same effect as the <Backspace>, so we have the same
// results if we just move to the next block and apply the same <Backspace> logic.
var bCustom = false ;
// Get the current selection.
var oRange = new FCKDomRange( this.Window ) ;
oRange.MoveToSelection() ;
// Kludge for #247
if ( FCKBrowserInfo.IsIE && this._CheckIsAllContentsIncluded( oRange, this.Window.document.body ) )
{
this._FixIESelectAllBug( oRange ) ;
return true ;
}
// There is just one special case for collapsed selections at the end of a block.
if ( oRange.CheckIsCollapsed() && oRange.CheckEndOfBlock( FCKBrowserInfo.IsGeckoLike ) )
{
var oCurrentBlock = oRange.StartBlock ;
var eCurrentCell = FCKTools.GetElementAscensor( oCurrentBlock, 'td' );
var eNext = FCKDomTools.GetNextSourceElement( oCurrentBlock, true, [ oRange.StartBlockLimit.nodeName ],
['UL','OL','TR'], true ) ;
// Bug #1323 : if we're in a table cell, and the next node belongs to a different cell, then don't
// delete anything.
if ( eCurrentCell )
{
var eNextCell = FCKTools.GetElementAscensor( eNext, 'td' );
if ( eNextCell != eCurrentCell )
return true ;
}
bCustom = this._ExecuteBackspace( oRange, oCurrentBlock, eNext ) ;
}
oRange.Release() ;
return bCustom ;
}
/*
* Executes the <Tab> key behavior.
*/
FCKEnterKey.prototype.DoTab = function()
{
var oRange = new FCKDomRange( this.Window );
oRange.MoveToSelection() ;
// If the user pressed <tab> inside a table, we should give him the default behavior ( moving between cells )
// instead of giving him more non-breaking spaces. (Bug #973)
var node = oRange._Range.startContainer ;
while ( node )
{
if ( node.nodeType == 1 )
{
var tagName = node.tagName.toLowerCase() ;
if ( tagName == "tr" || tagName == "td" || tagName == "th" || tagName == "tbody" || tagName == "table" )
return false ;
else
break ;
}
node = node.parentNode ;
}
if ( this.TabText )
{
oRange.DeleteContents() ;
oRange.InsertNode( this.Window.document.createTextNode( this.TabText ) ) ;
oRange.Collapse( false ) ;
oRange.Select() ;
}
return true ;
}
FCKEnterKey.prototype._ExecuteEnterBlock = function( blockTag, range )
{
// Get the current selection.
var oRange = range || new FCKDomRange( this.Window ) ;
var oSplitInfo = oRange.SplitBlock( blockTag ) ;
if ( oSplitInfo )
{
// Get the current blocks.
var ePreviousBlock = oSplitInfo.PreviousBlock ;
var eNextBlock = oSplitInfo.NextBlock ;
var bIsStartOfBlock = oSplitInfo.WasStartOfBlock ;
var bIsEndOfBlock = oSplitInfo.WasEndOfBlock ;
// If there is one block under a list item, modify the split so that the list item gets split as well. (Bug #1647)
if ( eNextBlock )
{
if ( eNextBlock.parentNode.nodeName.IEquals( 'li' ) )
{
FCKDomTools.BreakParent( eNextBlock, eNextBlock.parentNode ) ;
FCKDomTools.MoveNode( eNextBlock, eNextBlock.nextSibling, true ) ;
}
}
else if ( ePreviousBlock && ePreviousBlock.parentNode.nodeName.IEquals( 'li' ) )
{
FCKDomTools.BreakParent( ePreviousBlock, ePreviousBlock.parentNode ) ;
oRange.MoveToElementEditStart( ePreviousBlock.nextSibling );
FCKDomTools.MoveNode( ePreviousBlock, ePreviousBlock.previousSibling ) ;
}
// If we have both the previous and next blocks, it means that the
// boundaries were on separated blocks, or none of them where on the
// block limits (start/end).
if ( !bIsStartOfBlock && !bIsEndOfBlock )
{
// If the next block is an <li> with another list tree as the first child
// We'll need to append a placeholder or the list item wouldn't be editable. (Bug #1420)
if ( eNextBlock.nodeName.IEquals( 'li' ) && eNextBlock.firstChild
&& eNextBlock.firstChild.nodeName.IEquals( ['ul', 'ol'] ) )
eNextBlock.insertBefore( FCKTools.GetElementDocument( eNextBlock ).createTextNode( 'xa0' ), eNextBlock.firstChild ) ;
// Move the selection to the end block.
if ( eNextBlock )
oRange.MoveToElementEditStart( eNextBlock ) ;
}
else
{
if ( bIsStartOfBlock && bIsEndOfBlock && ePreviousBlock.tagName.toUpperCase() == 'LI' )
{
oRange.MoveToElementStart( ePreviousBlock ) ;
this._OutdentWithSelection( ePreviousBlock, oRange ) ;
oRange.Release() ;
return true ;
}
var eNewBlock ;
if ( ePreviousBlock )
{
var sPreviousBlockTag = ePreviousBlock.tagName.toUpperCase() ;
// If is a header tag, or we are in a Shift+Enter (#77),
// create a new block element (later in the code).
if ( !this._HasShift && !(/^H[1-6]$/).test( sPreviousBlockTag ) )
{
// Otherwise, duplicate the previous block.
eNewBlock = FCKDomTools.CloneElement( ePreviousBlock ) ;
}
}
else if ( eNextBlock )
eNewBlock = FCKDomTools.CloneElement( eNextBlock ) ;
if ( !eNewBlock )
eNewBlock = this.Window.document.createElement( blockTag ) ;
// Recreate the inline elements tree, which was available
// before the hitting enter, so the same styles will be
// available in the new block.
var elementPath = oSplitInfo.ElementPath ;
if ( elementPath )
{
for ( var i = 0, len = elementPath.Elements.length ; i < len ; i++ )
{
var element = elementPath.Elements[i] ;
if ( element == elementPath.Block || element == elementPath.BlockLimit )
break ;
if ( FCKListsLib.InlineChildReqElements[ element.nodeName.toLowerCase() ] )
{
element = FCKDomTools.CloneElement( element ) ;
FCKDomTools.MoveChildren( eNewBlock, element ) ;
eNewBlock.appendChild( element ) ;
}
}
}
if ( FCKBrowserInfo.IsGeckoLike )
FCKTools.AppendBogusBr( eNewBlock ) ;
oRange.InsertNode( eNewBlock ) ;
// This is tricky, but to make the new block visible correctly
// we must select it.
if ( FCKBrowserInfo.IsIE )
{
// Move the selection to the new block.
oRange.MoveToElementEditStart( eNewBlock ) ;
oRange.Select() ;
}
// Move the selection to the new block.
oRange.MoveToElementEditStart( bIsStartOfBlock && !bIsEndOfBlock ? eNextBlock : eNewBlock ) ;
}
if ( FCKBrowserInfo.IsGeckoLike )
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() ;
}
?>