/*

* 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:   Shutdown watcher header file

*

*/

#ifndef _SWIDAEMON_SHUTDOWNWATHCER_H

#define _SWIDAEMON_SHUTDOWNWATHCER_H

#include <e32base.h>

#include <e32property.h>

/**

 *  Shutdown observer

 *  Gets notification when the system is going down

 *

 *  @since S60 v5.0

 */

class MShutdownObserver

    {

public:

    /**

     * Notification when system is shutting down

     */

    virtual void NotifyShuttingDown()=0;

    };

/**

 *  Shutdown watcher

 *  Notifies MShutdownObserver when the system is going down

 *

 *  @since S60 v5.0

 */

class CShutdownWatcher : public CActive

    {

public:

    static CShutdownWatcher* NewL( MShutdownObserver& aObserver );

    ~CShutdownWatcher();

    /**

     * Starts to watch shutdown status

     * @return none

     */

    void Start();

private:

    CShutdownWatcher( MShutdownObserver& aObserver );

    void ConstructL();

    void IssueRequest();

    // from CActive

    void DoCancel();

    void RunL();

private:

    MShutdownObserver&  iObserver;

    RProperty           iProperty;

    };

#endif //_SWIDAEMON_SHUTDOWNWATHCER_H