/*

* Copyright (c) 2002-2006 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:  Asynchronous refresher for CGflmNavigatorModel

*

*/

#ifndef CFILEMANAGERREFRESHER_H

#define CFILEMANAGERREFRESHER_H

// INCLUDES

#include <e32base.h>

#include "GFLM.hrh"

// FORWARD DECLARATIONS

class CGflmNavigatorModel;

class MFileManagerProcessObserver;

// CLASS DECLARATION

/**

*  This class start asynchronous refreshing of given CGflmNavigatorModel.

*

*  @lib FileManagerEngine.lib

*  @since 2.0

*/

NONSHARABLE_CLASS(CFileManagerRefresher) : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CFileManagerRefresher* NewL( CGflmNavigatorModel& aModel );

        /**

        * Destructor.

        */

        virtual ~CFileManagerRefresher();

    public: // New functions

        /**

        * Refreshes the model.

        * @since 2.0

        * @param aRefreshMode Given refresh mode.

        */

        void Refresh( TGflmRefreshMode aRefreshMode = ERefreshItems );

        /**

        * Sets observer

        * @since 2.0

        * @param aObserver Observer for the operation or NULL,

        *                  ownership is not transferred.

        */

        void SetObserver( MFileManagerProcessObserver* aObserver );

        /**

        * Cancels refresh.

        * @since 2.0

        */

        TBool CancelRefresh();

    protected:  // From CActive

        void RunL();

        TInt RunError( TInt aError );

        void DoCancel();

    private:

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * C++ default constructor.

        */

        CFileManagerRefresher( CGflmNavigatorModel& aModel );

    private:    // Data

        // Ref: Reference to the model instance that will be refreshed

        CGflmNavigatorModel& iModel;

        // Ref: Pointer to the observer that will be notified

        MFileManagerProcessObserver* iObserver;

    };

#endif // CFILEMANAGERREFRESHER_H

// End of File