/*

* Copyright (c) 2010 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:  CSysApGanPropertyListener class definition. Class for

*                RProperty changes from GAN server.

*/

#ifndef C_SYSAPGANPROPERTYLISTENER_H

#define C_SYSAPGANPROPERTYLISTENER_H

#include <e32base.h>

#include <e32property.h>

#include "msysapganpropertyobserver.h"

/**

 *  Listen RProperty events.

 */

NONSHARABLE_CLASS( CSysApGanPropertyListener ) : 

    public CActive

    {

public:

    /**

     * Static constructor.

     * @param aProperty Property to listen to.

     * @param aObserver Object that is informed about about new IAP usage.

     */

    static CSysApGanPropertyListener* NewL( 

        RProperty& aProperty,

        MSysApGanPropertyObserver& aObserver );

    /**

     * Destructor.

     */

    ~CSysApGanPropertyListener();

protected:

    /**

     * C++ constructor.

     * @param aProperty Property to listen to.

     * @param aObserver Object that is informed about about new IAP usage.

     */

    CSysApGanPropertyListener( 

        RProperty& aProperty,

        MSysApGanPropertyObserver& aObserver );

    /**

     * Symbian 2nd phase constructor.

     */

    void ConstructL();

public:

    /**

     * Subscribes to a property. 

     */

    void Subscribe();

protected: // From CActive

    /**

     * Handles an active object's request completion event.

     */

    void RunL();

    /**

     * Cancels asynchronous request.

     */

    void DoCancel();

    /**

     * Handles a leave occurring in RunL().

     * @param aError Error that caused RunL to leave.

     */

    TInt RunError( TInt aError );   

protected: // Data

    /**

     * Observer to notifiy about property changes.

     */

    MSysApGanPropertyObserver& iObserver;

    /**

     * Property to listen to.

     */

    RProperty&   iProperty;

    };

#endif // C_SYSAPGANPROPERTYLISTENER_H