source: trunk/admin/inc/FCKeditor/editor/_source/internals/fcktools_ie.js@ 2

/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2006 Frederico Caldeira Knabben
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 *              http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 *              http://www.fckeditor.net/
 * 
 * "Support Open Source software. What about a donation today?"
 * 
 * File Name: fcktools_ie.js
 *      Utility functions. (IE version).
 * 
 * File Authors:
 *              Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

FCKTools.CancelEvent = function( e )
{
        return false ;
}

// Appends one or more CSS files to a document.
FCKTools._AppendStyleSheet = function( documentElement, cssFileUrl )
{
        return documentElement.createStyleSheet( cssFileUrl ).owningElement ;
}

// Removes all attributes and values from the element.
FCKTools.ClearElementAttributes = function( element )
{
        element.clearAttributes() ;
}

FCKTools.GetAllChildrenIds = function( parentElement )
{
        var aIds = new Array() ;
        for ( var i = 0 ; i < parentElement.all.length ; i++ )
        {
                var sId = parentElement.all[i].id ;
                if ( sId && sId.length > 0 )
                        aIds[ aIds.length ] = sId ;
        }
        return aIds ;
}

FCKTools.RemoveOuterTags = function( e )
{
        e.insertAdjacentHTML( 'beforeBegin', e.innerHTML ) ;
        e.parentNode.removeChild( e ) ;
}

FCKTools.CreateXmlObject = function( object )
{
        var aObjs ;
        
        switch ( object )
        {
                case 'XmlHttp' :
                        aObjs = [ 'MSXML2.XmlHttp', 'Microsoft.XmlHttp' ] ;
                        break ;
                                
                case 'DOMDocument' :
                        aObjs = [ 'MSXML2.DOMDocument', 'Microsoft.XmlDom' ] ;
                        break ;
        }

        for ( var i = 0 ; i < 2 ; i++ )
        {
                try { return new ActiveXObject( aObjs[i] ) ; }
                catch (e) 
                {}
        }
        
        if ( FCKLang.NoActiveX )
        {
                alert( FCKLang.NoActiveX ) ;
                FCKLang.NoActiveX = null ;
        }
}

FCKTools.DisableSelection = function( element )
{
        element.unselectable = 'on' ;

        var e, i = 0 ;
        while ( e = element.all[ i++ ] )
        {
                switch ( e.tagName )
                {
                        case 'IFRAME' :
                        case 'TEXTAREA' :
                        case 'INPUT' :
                        case 'SELECT' :
                                /* Ignore the above tags */
                                break ;
                        default :
                                e.unselectable = 'on' ;
                }
        }
}

FCKTools.GetScrollPosition = function( relativeWindow )
{
        var oDoc = relativeWindow.document ;

        // Try with the doc element.
        var oPos = { X : oDoc.documentElement.scrollLeft, Y : oDoc.documentElement.scrollTop } ;
        
        if ( oPos.X > 0 || oPos.Y > 0 )
                return oPos ;

        // If no scroll, try with the body.
        return { X : oDoc.body.scrollLeft, Y : oDoc.body.scrollTop } ;
}

FCKTools.AddEventListener = function( sourceObject, eventName, listener )
{
        sourceObject.attachEvent( 'on' + eventName, listener ) ;
}

FCKTools.RemoveEventListener = function( sourceObject, eventName, listener )
{
        sourceObject.detachEvent( 'on' + eventName, listener ) ;
}

// Listeners attached with this function cannot be detached.
FCKTools.AddEventListenerEx = function( sourceObject, eventName, listener, paramsArray )
{
        // Ok... this is a closures party, but is the only way to make it clean of memory leaks.
        var o = new Object() ;
        o.Source = sourceObject ;
        o.Params = paramsArray || [] ;  // Memory leak if we have DOM objects here.
        o.Listener = function( ev )
        {
                return listener.apply( o.Source, [ ev ].concat( o.Params ) ) ;
        }
        
        if ( FCK.IECleanup )
                FCK.IECleanup.AddItem( null, function() { o.Source = null ; o.Params = null ; } ) ;
        
        sourceObject.attachEvent( 'on' + eventName, o.Listener ) ;

        sourceObject = null ;   // Memory leak cleaner (because of the above closure).
        paramsArray = null ;    // Memory leak cleaner (because of the above closure).
}

// Returns and object with the "Width" and "Height" properties.
FCKTools.GetViewPaneSize = function( win )
{
        var oSizeSource ;
        
        var oDoc = win.document.documentElement ;
        if ( oDoc && oDoc.clientWidth )                         // IE6 Strict Mode
                oSizeSource = oDoc ;
        else
                oSizeSource = top.document.body ;               // Other IEs
        
        if ( oSizeSource )
                return { Width : oSizeSource.clientWidth, Height : oSizeSource.clientHeight } ;
        else
                return { Width : 0, Height : 0 } ;
}

FCKTools.SaveStyles = function( element )
{
        var oSavedStyles = new Object() ;
        
        if ( element.className.length > 0 )
        {
                oSavedStyles.Class = element.className ;
                element.className = '' ;
        }

        var sInlineStyle = element.style.cssText ;

        if ( sInlineStyle.length > 0 )
        {
                oSavedStyles.Inline = sInlineStyle ;
                element.style.cssText = '' ;
        }
        
        return oSavedStyles ;
}

FCKTools.RestoreStyles = function( element, savedStyles )
{
        element.className               = savedStyles.Class || '' ;
        element.style.cssText   = savedStyles.Inline || '' ;
}

FCKTools.RegisterDollarFunction = function( targetWindow )
{
        targetWindow.$ = targetWindow.document.getElementById ;
}

FCKTools.AppendElement = function( target, elementName )
{
        return target.appendChild( this.GetElementDocument( target ).createElement( elementName ) ) ;
}