/*

* Copyright (c) 2009 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:

* Observer for changes in the widget data

*

*/

#ifndef WMWIDGETDATAOBSERVER_H

#define WMWIDGETDATAOBSERVER_H

// INCLUDES

#include <e32std.h>

// Forward declarations

class CWmWidgetData;

// CLASS DECLARATION

/**

 * Observer class for receiving notifications

 * when changes occur in widget data

 */

NONSHARABLE_CLASS( MWmWidgetDataObserver )

    {

    public:

        /**

         * A single widget data has changed.

         * @param aWidgetData pointer to the data where change

         *        has occurred

         */

        virtual void HandleWidgetDataChanged(

                            CWmWidgetData* aWidgetData ) = 0;

    };

#endif // WMWIDGETDATAOBSERVER_H