/*

* Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*     Class CPbkThumbnailManager implementation classes.

*

*/

#ifndef MPBK2IMAGEREADEROBSERVER_H

#define MPBK2IMAGEREADEROBSERVER_H

//  INCLUDES

#include <e32def.h>

// FORWARD DECLARATIONS

class CPbk2ImageReader;

class CFbsBitmap;

// CLASS DECLARATION

/**

 * Observer interface for CPbkThumbnailReader.

 */

class MPbk2ImageReaderObserver

	{

    public:

        /**

         * Called by CPbkImageReader when image read is complete.

         *

         * @param aReader   the completed reader.

         * @param aBitmap   the read image.

         */

        virtual void ImageReadComplete

            (CPbk2ImageReader& aReader, CFbsBitmap* aBitmap) =0;

        /**

         * Called by CPbkImageReader if image reading fails.

         *

         * @param aReader   the failed reader.

         * @param aError    error code of the failure.

         */

        virtual void ImageReadFailed(CPbk2ImageReader& aReader, TInt aError) =0;

        /**

         * Called by CPbkImageReader when image open is complete.

         * After this event CPbkImageReader functions FrameCount() and 

         * FrameInfo() can be called.

         * Default implementation is empty as most clients are interested of 

         * ImageReadComplete/Failed events only.

         *

         * @param aReader   the completed reader.

         */

        virtual void ImageOpenComplete(CPbk2ImageReader& /*aReader*/)

			{

			}

    };

#endif // MPBK2IMAGEREADEROBSERVER_H

// End of File