/*

* Copyright (c) 2005 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: CLF Operation Observer.

*

*/

#ifndef __CFLDOPERATIONOBSERVER_H__

#define __CFLDOPERATIONOBSERVER_H__

// INTERNAL INCLUDES

// EXTERNAL INCLUDES

#include <e32base.h>

#include <MCLFOperationObserver.h>

// CLASS DECLARATION

/**

*  CLF Operation Observer.

*  CFLDOperationObserver receives operation events of Content 

*  Listing Framework. Operation event is generated when asynchronous refresh

*  operation of List Model is finished.

*/

NONSHARABLE_CLASS( CFLDOperationObserver )

    : public CBase,

      public MCLFOperationObserver

    {

    public:  // Constructors and destructor

		/**

		 * Creates and returns a new instance of this class.

		 * @return Pointer to the CFLDOperationObserver object

		 */

	    static CFLDOperationObserver* NewL();

        /**

        * Destructor.

        */

        virtual ~CFLDOperationObserver();

    private:    // Constructors

        /**

        * C++ default constructor.

        */

        CFLDOperationObserver();

    protected:  // Methods derived from MCLFOperationObserver

        void HandleOperationEventL( TCLFOperationEvent aOperationEvent,

                                    TInt aError );

	public:     // New functions

  		/**

        * Check if there is a refresh operation is ongoing.

        * @return ETrue if refresh is not finished,

        *         EFalse if refresh is finished

        */

        TBool IsRefreshOngoing();

        /**

        * Prepare for a refresh operation to start.

        * @param aWait The wait instance to stop when refreshing is completed

        */

        void PrepareForRefresh( CActiveSchedulerWait& aWait );

    private:    // Data

        /// Own: For waiting the refresh operation to complete

        CActiveSchedulerWait* iWait;

        // For indicating that refresh operation is started but not finished

        TBool iRefreshOngoing;                                    

    };

#endif // __CFLDOperationObserver_H__

// End of File