/*

* 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 MCLFOPERATIONOBSERVER_H

#define MCLFOPERATIONOBSERVER_H

//  INCLUDES

#include <e32def.h>

// DATA TYPES

/**

* Content Listing Framework list model operation events

*/

enum TCLFOperationEvent

    {

    /// Refresh operation is completed

    ECLFRefreshComplete = 0x0,

    /// Model content is obsolated and should be refreshed

    ECLFModelOutdated = 0x1

    };

// FORWARD DECLARATIONS

class MCLFOperationObserverExt;

// CLASS DECLARATION

/**

*  Operation Observer is for observing operation events of the Content Listing

*  Framework. Client application gets notified when asynchronous operations

*  are completed. For example, ECLFRefreshComplete event is received when the

*  asynchronous refresh operation is compeleted.

*

*  @lib ContentListingFramework.lib

*  @since S60 3.1

*/

class MCLFOperationObserver

    {

    public: // New functions

        /**

        * Abstract method to get list model operation events. This method is

        * called when an event is received.

        * @since S60 3.1

        * @param aOperationEvent Operation event code of the event

        * @param aError System wide error code if the operation did not

        *        succeed.

        */

        virtual void HandleOperationEventL( TCLFOperationEvent aOperationEvent,

                                            TInt aError ) = 0;

    protected:

        /**

        * Destructor.

        */

        virtual ~MCLFOperationObserver() {}

    private: // Extension interface

        /**

        * This member is internal and not intended for use.

        */

        virtual MCLFOperationObserverExt* Extension() { return NULL; }

    };

#endif      // MCLFOPERATIONOBSERVER_H

// End of File