// Copyright (c) 2008-2009 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 __ASSRVSYSTEMSTATE_H__

#define __ASSRVSYSTEMSTATE_H__

#include <ssm/ssmstateawaresession.h>

#include <e32property.h>

#include "assrvsystemstateobserver.h"

class CASSrvAlarmQueue;

/** A class to listen to changes in system state, such as shutdown events.

Observers can request notification of these events so that they can handle them.

*/

class CASSrvSystemState : public CActive

	{

public:

	static CASSrvSystemState* NewL();

	~CASSrvSystemState();

	void RequestNotificationL(MASSrvSystemStateObserver& aObserver);

	void RequestNotificationCancel(MASSrvSystemStateObserver& aObserver);

private:

	CASSrvSystemState();

	void ConstructL();

	TBool GetState(MASSrvSystemStateObserver::TState& aState);

	void AcknowledgeAndRequestStateNotification();

private: // from CActive

	void RunL();

	void DoCancel();

private:

	RSsmStateAwareSession iStateAwareSession;

	RPointerArray<MASSrvSystemStateObserver> iObservers;

	RProperty iWorkAroundProperty;

	RProperty iAcknowledgement;

	TBool iWorkAround;

	};

#endif