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fckdomrange_ie.js
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fckdomrange_ie.js
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/*
* FCKeditor - The text editor for Internet - http://www.fckeditor.net
* Copyright (C) 2003-2007 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 ==
*
* Class for working with a selection range, much like the W3C DOM Range, but
* it is not intented to be an implementation of the W3C interface.
* (IE Implementation)
*/
FCKDomRange.prototype.MoveToSelection = function()
{
this.Release( true ) ;
this._Range = new FCKW3CRange( this.Window.document ) ;
var oSel = this.Window.document.selection ;
if ( oSel.type != 'Control' )
{
// Set the start boundary.
eMarker = this._GetSelectionMarkerTag( true ) ;
this._Range.setStart( eMarker.parentNode, FCKDomTools.GetIndexOf( eMarker ) ) ;
eMarker.parentNode.removeChild( eMarker ) ;
// Set the end boundary.
var eMarker = this._GetSelectionMarkerTag( false ) ;
this._Range.setEnd( eMarker.parentNode, FCKDomTools.GetIndexOf( eMarker ) ) ;
eMarker.parentNode.removeChild( eMarker ) ;
this._UpdateElementInfo() ;
}
else
{
var oControl = oSel.createRange().item(0) ;
if ( oControl )
{
this._Range.setStartBefore( oControl ) ;
this._Range.setEndAfter( oControl ) ;
this._UpdateElementInfo() ;
}
}
}
FCKDomRange.prototype.Select = function()
{
if ( this._Range )
{
var bIsCollapsed = this.CheckIsCollapsed() ;
// Create marker tags for the start and end boundaries.
var eStartMarker = this._GetRangeMarkerTag( true ) ;
if ( !bIsCollapsed )
var eEndMarker = this._GetRangeMarkerTag( false ) ;
// Create the main range which will be used for the selection.
var oIERange = this.Window.document.body.createTextRange() ;
// Position the range at the start boundary.
oIERange.moveToElementText( eStartMarker ) ;
oIERange.moveStart( 'character', 1 ) ;
if ( !bIsCollapsed )
{
// Create a tool range for the end.
var oIERangeEnd = this.Window.document.body.createTextRange() ;
// Position the tool range at the end.
oIERangeEnd.moveToElementText( eEndMarker ) ;
// Move the end boundary of the main range to match the tool range.
oIERange.setEndPoint( 'EndToEnd', oIERangeEnd ) ;
oIERange.moveEnd( 'character', -1 ) ;
}
// Remove the markers (reset the position, because of the changes in the DOM tree).
this._Range.setStartBefore( eStartMarker ) ;
eStartMarker.parentNode.removeChild( eStartMarker ) ;
if ( bIsCollapsed )
{
// The following trick is needed so IE makes collapsed selections
// inside empty blocks visible (expands the block).
try
{
oIERange.pasteHTML(' ') ;
oIERange.moveStart( 'character', -1 ) ;
}
catch (e){}
oIERange.select() ;
oIERange.pasteHTML('') ;
}
else
{
this._Range.setEndBefore( eEndMarker ) ;
eEndMarker.parentNode.removeChild( eEndMarker ) ;
oIERange.select() ;
}
}
}
FCKDomRange.prototype._GetSelectionMarkerTag = function( toStart )
{
// Get a range for the start boundary.
var oRange = this.Window.document.selection.createRange() ;
oRange.collapse( toStart === true ) ;
// Paste a marker element at the collapsed range and get it from the DOM.
var sMarkerId = 'fck_dom_range_temp_' + (new Date()).valueOf() + '_' + Math.floor(Math.random()*1000) ;
oRange.pasteHTML( '<span id="' + sMarkerId + '"></span>' ) ;
return this.Window.document.getElementById( sMarkerId ) ;
}
FCKDomRange.prototype._GetRangeMarkerTag = function( toStart )
{
// Get a range for the start boundary.
var oRange = this._Range ;
// insertNode() will add the node at the beginning of the Range, updating
// the endOffset if necessary. So, we can work with the current range in this case.
if ( !toStart )
{
oRange = oRange.cloneRange() ;
oRange.collapse( toStart === true ) ;
}
var eSpan = this.Window.document.createElement( 'span' ) ;
eSpan.innerHTML = '&nbsp;' ;
oRange.insertNode( eSpan ) ;
return eSpan ;
}

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