/*

 * Copyright (c) 2002-2009 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 "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 * which accompanies this distribution, and is available

 * at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 *

 */

 #ifndef MCLFPROCESSOBSERVER_H

 #define MCLFPROCESSOBSERVER_H

 //  INCLUDES

 #include <e32std.h>

 // DATA TYPES

 /**

 * Content Listing Framework process events

 */

 enum TCLFProcessEvent

     {

     /// CLF server starts update process

     ECLFUpdateStart = 0x0,

     /// CLF server update process is end

     ECLFUpdateStop = 0x1

     };

 // FORWARD DECLARATIONS

 class MCLFProcessObserverExt;

 // CLASS DECLARATION

 /**

 *  Process observer interface for Content Listing Framework.

 *  Implement this interface to get notified of process events. These process

 *  events are generated when update process of CLF server is started

 *  and finished.

 *

 *  @lib ContentListingFramework.lib

 *  @since S60 3.1

 */

 class MCLFProcessObserver

     {

     public: // New functions

         /**

         * Abstract method to handle CLF process event. This method is called

         * when process events are generated.

         * @since S60 3.1

         * @param aProcessEvent The process event that was generated.

         */

         virtual void HandleCLFProcessEventL( TCLFProcessEvent aProcessEvent ) = 0;

     protected:

         /**

         * Destructor.

         */

         virtual ~MCLFProcessObserver() {}

     private: // Extension interface

         /**

         * This member is internal and not intended for use.

         */

         virtual MCLFProcessObserverExt* Extension() { return NULL; }

     };

 #endif      // MCLFProcessObserver_H

 // End of File