#ifndef LIW_BUFFEREXTENSION_H

#define LIW_BUFFEREXTENSION_H/*

* Copyright (c) 2003-2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:       Abstract bitmap buffer representation.

*

*/

#include <fbs.h>

#include "liwvariant.h"

class CFbsBitmap;

class CLiwBitmapBuffer : public CLiwBuffer

	{

	public:

		/*

		 * The concrete implementation of buffer types should perform equality operation

		 * check. This is a platform specifc extension class to support bitmap

		 * buffer to abstract CFbsBitmap type.

		 *

		 * @return platform specific bitmap representation. By default, this method

		 * returns NULL

		 */

		virtual CFbsBitmap* AsBitmap()

			{

			return NULL;	// return NULL by default

			} 

	};

/**

 	* Abstract file buffer representation.

	*

**/

class CLiwFileBuffer : public CLiwBuffer

{

	public:

		virtual RFile& AsFile() = 0;

};

#endif