1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies)..

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * Observer for changes in the widget data

    16 *

    17 */

    18 

    19 

    20 #ifndef WMWIDGETDATAOBSERVER_H

    21 #define WMWIDGETDATAOBSERVER_H

    22 

    23 // INCLUDES

    24 #include <e32std.h>

    25 

    26 // Forward declarations

    27 class CWmWidgetData;

    28 

    29 // CLASS DECLARATION

    30 

    31 /**

    32  * Observer class for receiving notifications

    33  * when changes occur in widget data

    34  */

    35 NONSHARABLE_CLASS( MWmWidgetDataObserver )

    36     {

    37     public:

    38         /**

    39          * A single widget data has changed.

    40          * @param aWidgetData pointer to the data where change

    41          *        has occurred

    42          */

    43         virtual void HandleWidgetDataChanged(

    44                             CWmWidgetData* aWidgetData ) = 0;

    45 

    46     };

    47 

    48 #endif // WMWIDGETDATAOBSERVER_H