/*
* FCKeditor - The text editor for Internet - http://www.fckeditor.net
* Copyright (C) 2003-2009 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 ==
*
* Active selection functions. (IE specific implementation)
*/
// Get the selection type.
FCKSelection.GetType = function()
{
// It is possible that we can still get a text range object even when type=='None' is returned by IE.
// So we'd better check the object returned by createRange() rather than by looking at the type.
try
{
var ieType = FCKSelection.GetSelection().type ;
if ( ieType == 'Control' || ieType == 'Text' )
return ieType ;
if ( this.GetSelection().createRange().parentElement )
return 'Text' ;
}
catch(e)
{
// Nothing to do, it will return None properly.
}
return 'None' ;
} ;
// Retrieves the selected element (if any), just in the case that a single
// element (object like and image or a table) is selected.
FCKSelection.GetSelectedElement = function()
{
if ( this.GetType() == 'Control' )
{
var oRange = this.GetSelection().createRange() ;
if ( oRange && oRange.item )
return this.GetSelection().createRange().item(0) ;
}
return null ;
} ;
FCKSelection.GetParentElement = function()
{
switch ( this.GetType() )
{
case 'Control' :
var el = FCKSelection.GetSelectedElement() ;
return el ? el.parentElement : null ;
case 'None' :
return null ;
default :
return this.GetSelection().createRange().parentElement() ;
}
} ;
FCKSelection.GetBoundaryParentElement = function( startBoundary )
{
switch ( this.GetType() )
{
case 'Control' :
var el = FCKSelection.GetSelectedElement() ;
return el ? el.parentElement : null ;
case 'None' :
return null ;
default :
var doc = FCK.EditorDocument ;
var range = doc.selection.createRange() ;
range.collapse( startBoundary !== false ) ;
var el = range.parentElement() ;
// It may happen that range is comming from outside "doc", so we
// must check it (#1204).
return FCKTools.GetElementDocument( el ) == doc ? el : null ;
}
} ;
FCKSelection.SelectNode = function( node )
{
FCK.Focus() ;
this.GetSelection().empty() ;
var oRange ;
try
{
// Try to select the node as a control.
oRange = FCK.EditorDocument.body.createControlRange() ;
oRange.addElement( node ) ;
}
catch(e)
{
// If failed, select it as a text range.
oRange = FCK.EditorDocument.body.createTextRange() ;
oRange.moveToElementText( node ) ;
}
oRange.select() ;
} ;
FCKSelection.Collapse = function( toStart )
{
FCK.Focus() ;
if ( this.GetType() == 'Text' )
{
var oRange = this.GetSelection().createRange() ;
oRange.collapse( toStart == null || toStart === true ) ;
oRange.select() ;
}
} ;
// The "nodeTagName" parameter must be Upper Case.
FCKSelection.HasAncestorNode = function( nodeTagName )
{
var oContainer ;
if ( this.GetSelection().type == "Control" )
{
oContainer = this.GetSelectedElement() ;
}
else
{
var oRange = this.GetSelection().createRange() ;
oContainer = oRange.parentElement() ;
}
while ( oContainer )
{
if ( oContainer.nodeName.IEquals( nodeTagName ) ) return true ;
oContainer = oContainer.parentNode ;
}
return false ;
} ;
// The "nodeTagName" parameter must be UPPER CASE.
// It can be also an array of names
FCKSelection.MoveToAncestorNode = function( nodeTagName )
{
var oNode, oRange ;
if ( ! FCK.EditorDocument )
return null ;
if ( this.GetSelection().type == "Control" )
{
oRange = this.GetSelection().createRange() ;
for ( i = 0 ; i < oRange.length ; i++ )
{
if (oRange(i).parentNode)
{
oNode = oRange(i).parentNode ;
break ;
}
}
}
else
{
oRange = this.GetSelection().createRange() ;
oNode = oRange.parentElement() ;
}
while ( oNode && !oNode.nodeName.Equals( nodeTagName ) )
oNode = oNode.parentNode ;
return oNode ;
} ;
FCKSelection.Delete = function()
{
// Gets the actual selection.
var oSel = this.GetSelection() ;
// Deletes the actual selection contents.
if ( oSel.type.toLowerCase() != "none" )
{
oSel.clear() ;
}
return oSel ;
} ;
/**
* Returns the native selection object.
*/
FCKSelection.GetSelection = function()
{
this.Restore() ;
return FCK.EditorDocument.selection ;
}
FCKSelection.Save = function( lock )
{
var editorDocument = FCK.EditorDocument ;
if ( !editorDocument )
return ;
// Avoid saving again a selection while a dialog is open #2616
if ( this.locked )
return ;
this.locked = !!lock ;
var selection = editorDocument.selection ;
var range ;
if ( selection )
{
// The call might fail if the document doesn't have the focus (#1801),
// but we don't want to modify the current selection (#2495) with a call to FCK.Focus() ;
try {
range = selection.createRange() ;
}
catch(e) {}
// Ensure that the range comes from the editor document.
if ( range )
{
if ( range.parentElement && FCKTools.GetElementDocument( range.parentElement() ) != editorDocument )
range = null ;
else if ( range.item && FCKTools.GetElementDocument( range.item(0) )!= editorDocument )
range = null ;
}
}
this.SelectionData = range ;
}
FCKSelection._GetSelectionDocument = function( selection )
{
var range = selection.createRange() ;
if ( !range )
return null;
else if ( range.item )
return FCKTools.GetElementDocument( range.item( 0 ) ) ;
else
return FCKTools.GetElementDocument( range.parentElement() ) ;
}
FCKSelection.Restore = function()
{
if ( this.SelectionData )
{
FCK.IsSelectionChangeLocked = true ;
try
{
// Don't repeat the restore process if the editor document is already selected.
if ( String( this._GetSelectionDocument( FCK.EditorDocument.selection ).body.contentEditable ) == 'true' )
{
FCK.IsSelectionChangeLocked = false ;
return ;
}
this.SelectionData.select() ;
}
catch ( e ) {}
FCK.IsSelectionChangeLocked = false ;
}
}
FCKSelection.Release = function()
{
this.locked = false ;
delete this.SelectionData ;
}