/*

* Copyright (c) 2009 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: 

*

*/

#ifndef CTSCENREPLISTENER_H

#define CTSCENREPLISTENER_H

#include <e32base.h>

class CRepository;

/**

 * Observer interface for getting notifications about a cenrep key change.

 */

class MTsCenrepChangeObserver

    {

public:

    virtual void CenrepChanged( TUint32 aKey, TInt aNewValue ) = 0;

    };

/**

 * Class to get notifications about changes to a cenrep key.

 */

NONSHARABLE_CLASS( CTsCenrepListener ) : public CActive

    {

public:

    /**

     * Fist step constructor

     */

    IMPORT_C static CTsCenrepListener* NewL(const TUid& aRep, TUint32 aKey,

                                            MTsCenrepChangeObserver& aObserver);

    /**

     * Fist step constructor

     */

    IMPORT_C static CTsCenrepListener* NewLC(const TUid& aRep, TUint32 aKey,

                                             MTsCenrepChangeObserver& aObserver);

    /**

     * Destructor.

     */

    IMPORT_C ~CTsCenrepListener();

    /**

     * Returns the current value of the watched key.

     */

    IMPORT_C TInt Value();

private:

    /**

     * Constructor.

     * Starts listening for the key.

     */

    CTsCenrepListener(TUint32 aKey,

        MTsCenrepChangeObserver& aObserver );

    /**

     * Second step constructor 

     */

    void ConstructL(const TUid& aRep);

    void DoCancel();

    void RunL(); 

    TInt RunError( TInt aError );

    MTsCenrepChangeObserver& iObserver;

    CRepository* iRep;

    TUint32 iKey;

    };

#endif /*CTSCENREPLISTENER_H*/