/*

* 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 CTSPROPERTYLISTENER_H

#define CTSPROPERTYLISTENER_H

#include <e32base.h>

#include <e32property.h>

/**

 * Observer interface for getting notifications about a P&S property change.

 */

class MTsPropertyChangeObserver

    {

public:

    virtual void PropertyChanged( TUid aCategory, TUint aKey ) = 0;

    };

/**

 * Class to get notifications about changes to a P&S property.

 */

NONSHARABLE_CLASS( CTsPropertyListener ) : public CActive

    {

public:

    /**

     * Constructor.

     * Starts listening for the property with the given category/key.

     */

    IMPORT_C CTsPropertyListener( TUid aCategory,

        TUint aKey, MTsPropertyChangeObserver& aObserver );

    /**

     * Destructor.

    */

    IMPORT_C ~CTsPropertyListener();

private:

    void DoCancel();

    void RunL(); 

    TInt RunError( TInt aError );

    MTsPropertyChangeObserver& iObserver;

    RProperty iProperty;

    TUid iCategory;

    TUint iKey;

    };

#endif /*CTSPROPERTYLISTENER_H*/

// End of file