source: branches/1.2/workflow/js/fckeditor/editor/_source/internals/fckselection_gecko.js @ 1349

/*
 * 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 ==
 *
 * Active selection functions. (Gecko specific implementation)
 */

// Get the selection type (like document.select.type in IE).
FCKSelection.GetType = function()
{
//      if ( ! this._Type )
//      {
                // By default set the type to "Text".
                this._Type = 'Text' ;

                // Check if the actual selection is a Control (IMG, TABLE, HR, etc...).
                var oSel ;
                try { oSel = FCK.EditorWindow.getSelection() ; }
                catch (e) {}

                if ( oSel && oSel.rangeCount == 1 )
                {
                        var oRange = oSel.getRangeAt(0) ;
                        if ( oRange.startContainer == oRange.endContainer && (oRange.endOffset - oRange.startOffset) == 1 && oRange.startContainer.nodeType != Node.TEXT_NODE )
                                this._Type = 'Control' ;
                }
//      }
        return this._Type ;
}

// 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 oSel = FCK.EditorWindow.getSelection() ;
                return oSel.anchorNode.childNodes[ oSel.anchorOffset ] ;
        }
        return null ;
}

FCKSelection.GetParentElement = function()
{
        if ( this.GetType() == 'Control' )
                return FCKSelection.GetSelectedElement().parentNode ;
        else
        {
                var oSel = FCK.EditorWindow.getSelection() ;
                if ( oSel )
                {
                        var oNode = oSel.anchorNode ;

                        while ( oNode && oNode.nodeType != 1 )
                                oNode = oNode.parentNode ;

                        return oNode ;
                }
        }
        return null ;
}

FCKSelection.SelectNode = function( element )
{
//      FCK.Focus() ;

        var oRange = FCK.EditorDocument.createRange() ;
        oRange.selectNode( element ) ;

        var oSel = FCK.EditorWindow.getSelection() ;
        oSel.removeAllRanges() ;
        oSel.addRange( oRange ) ;
}

FCKSelection.Collapse = function( toStart )
{
        var oSel = FCK.EditorWindow.getSelection() ;

        if ( toStart == null || toStart === true )
                oSel.collapseToStart() ;
        else
                oSel.collapseToEnd() ;
}

// The "nodeTagName" parameter must be Upper Case.
FCKSelection.HasAncestorNode = function( nodeTagName )
{
        var oContainer = this.GetSelectedElement() ;
        if ( ! oContainer && FCK.EditorWindow )
        {
                try             { oContainer = FCK.EditorWindow.getSelection().getRangeAt(0).startContainer ; }
                catch(e){}
        }

        while ( oContainer )
        {
                if ( oContainer.nodeType == 1 && oContainer.tagName == nodeTagName ) return true ;
                oContainer = oContainer.parentNode ;
        }

        return false ;
}

// The "nodeTagName" parameter must be Upper Case.
FCKSelection.MoveToAncestorNode = function( nodeTagName )
{
        var oNode ;

        var oContainer = this.GetSelectedElement() ;
        if ( ! oContainer )
                oContainer = FCK.EditorWindow.getSelection().getRangeAt(0).startContainer ;

        while ( oContainer )
        {
                if ( oContainer.nodeName == nodeTagName )
                        return oContainer ;

                oContainer = oContainer.parentNode ;
        }
        return null ;
}

FCKSelection.Delete = function()
{
        // Gets the actual selection.
        var oSel = FCK.EditorWindow.getSelection() ;

        // Deletes the actual selection contents.
        for ( var i = 0 ; i < oSel.rangeCount ; i++ )
        {
                oSel.getRangeAt(i).deleteContents() ;
        }

        return oSel ;
}