/*

* Copyright (c) 2008 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:  Class declaration of Psy change handler

*

*/

#ifndef C_LBTPSYCHANGELISTNER_H

#define C_LBTPSYCHANGELISTNER_H

#include <e32base.h>

#include <lbs.h>

class MLbtPsyChangeObserver;

/**

 *  This class listens to PSY change

 *  

 *  CLbtPsyChangeHandler registers for notification change in PSY

 *

 *  @since S60 v5.1

 */

class CLbtPsyChangeListner : public CActive

    {

public:

    /**

     * Factory function that instantiates an object of CLbtPsyChangeListner

     */

    static CLbtPsyChangeListner* NewL( MLbtPsyChangeObserver& aObserver );

    /**

     * Destructor.

     */

    virtual ~CLbtPsyChangeListner();

    /**

     * Starts listening to PSY change

     */

    void StartToListen( TPositionModuleId aPosID );

protected: // From CActive

    void RunL();

    void DoCancel();

private: 

    /**

     * Default constructor

     */

    CLbtPsyChangeListner( MLbtPsyChangeObserver& aObserver );

    /**

     * Symbian 2nd phase constructor

     */

    void ConstructL(); 

private://Data

    /**

     * Session to RPositionServer

     */

    RPositionServer iPosServer; 

    /**

     * PSY change observer

     */

    MLbtPsyChangeObserver& iObserver;

    /**

     * Module Id of the PSY for which change notification

     * is requested

     */

    TPositionModuleId iPosID;

    /**

     *

     */

    TPositionModuleStatusEvent iModuleStatusEvent;

    };

#endif // C_LBTPSYCHANGELISTNER_H