/*

* Copyright (c) 2007 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:  This file contains the header of CenRep Listener class.

*

*/

#ifndef CSPCENREPLISTENER_H

#define CSPCENREPLISTENER_H

// INCLUDE FILES

#include <e32base.h>

// Forward declarations

class CRepository;

class MCSPCenRepObserver;

// BASE CLASS

// CLASS DECLARATION

/**

*   CSPCenRepListener manages getting notification on CenRep key changes.

*/

class CSPCenRepListener : public CActive

    {

    public:

        /**

        * Two-phased construction.

        *

        * @param aUid cenrep Uid

        * @param aKey key to be listened

        * @param aObserver observer for key change.

        * @return instance of the class

        */

        static CSPCenRepListener* NewL( TUid aUid, TUint32 aKey, 

                   MCSPCenRepObserver* aObserver );

        /**

        * Destructor.

        */

        virtual ~CSPCenRepListener();

    public:

        /**

        * Gets the current value of the monitored setting

        * @param aValue the current value of the monitored setting

        * @return TInt Symbian OS error code from central repository

        */

        TInt Get( TInt& aValue );

    protected: // From CActive

        void DoCancel();

        TInt RunError( TInt aError );

        void RunL();

    private:

        /**

        * Constructor

        * @param aUid cenrep Uid

        * @param aKey key to be listened

        * @param aObserver observer for key change.

        */    

        CSPCenRepListener( TUid aUid, TUint32 aKey, 

                           MCSPCenRepObserver* aObserver );

        /**

        * Private constructing.

        */

        void ConstructL();

        /**

        * Submits a notification request

        */

        void SubmitNotifyRequestL();

    private: // Owned by this object

        /**

        * UID of CR key.

        */

        TUid iUid;

        /**

        * Repository access.

        * Own.

        */

        CRepository* iRepository;

        /**

        * Identification number of the monitored setting.

        */

        TUint32 iMonitorSetting;

        MCSPCenRepObserver* iObserver;

};

#endif // CSPCENREPLISTENER_H