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/*

 * 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 ) ) ;

}