/*

* Copyright (c) 1020 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 monitor.

*/

#ifndef __HS_SHUTDOWN_MONITOR__

#define __HS_SHUTDOWN_MONITOR__

#include <e32base.h>

#include <ssm/ssmstateawaresession.h>

/**

 * MHsShutdownMonitorObserver

 * 

 * Monitor component observer.

 * 

 * @since S60 5.2

 */

class MHsShutdownMonitorObserver

    {    

    public:

        /**

         * Called when shutdown occurs 

         */

        virtual void SystemShutdownEvent() = 0;

    };

/**

 * HsShutdownMonitor

 * 

 * Component for monitoring shutdown

 * 

 * @since S60 5.2

 */  

class CHsShutdownMonitor : public CActive

    {

    public:

        /**

         * Create new monitor

         * 

         * @param aObserver monitor observer

         * @since S60 5.2     

         */    

        static CHsShutdownMonitor* NewL(

                MHsShutdownMonitorObserver& aObserver );   

        /**

         * Destructor

         * 

         * @since S60 5.2     

         */    

        ~CHsShutdownMonitor();

        /**

         * Start monitor

         * 

         * @since S60 5.2

         */        

        void StartMonitor();        

    protected:

        /** 

         * C++ constructor

         *

         * @param aObserver     monitor observer.   

         * @since S60 5.2      

         */        

        CHsShutdownMonitor( MHsShutdownMonitorObserver& aObserver );    

        /**

         * Symbian 2nd phase constructor

         * 

         * @since S60 5.2

         */        

        void ConstructL();

    private: // From CActive

        /**

         * From CActive

         */        

        void RunL();

        /**

         * From CActive

         * 

         * @since S60 5.2

         */        

        void DoCancel(); 

        /**

         * From CActive

         * 

         * @since S60 5.2

         */        

        TInt RunError( TInt aError );

    private:	

        // watchdog observer

        MHsShutdownMonitorObserver& iObserver;

        // State aware session.

        RSsmStateAwareSession iSAS;

    };

#endif // __HS_PROCESS_MONITOR__