// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).+
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// All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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//+
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// Initial Contributors:+
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// Nokia Corporation - initial contribution.+
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//+
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// Contributors:+
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//+
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// Description:+
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//+
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+
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#ifndef __ASSRVSYSTEMSTATE_H__+
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#define __ASSRVSYSTEMSTATE_H__+
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+
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#include <ssm/ssmstateawaresession.h>+
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#include <e32property.h>+
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+
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#include "assrvsystemstateobserver.h"+
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+
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class CASSrvAlarmQueue;+
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+
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/** A class to listen to changes in system state, such as shutdown events.+
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Observers can request notification of these events so that they can handle them.+
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*/+
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class CASSrvSystemState : public CActive+
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	{+
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public:+
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	static CASSrvSystemState* NewL();+
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	~CASSrvSystemState();+
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	+
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	void RequestNotificationL(MASSrvSystemStateObserver& aObserver);+
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	void RequestNotificationCancel(MASSrvSystemStateObserver& aObserver);+
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		+
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private:+
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	CASSrvSystemState();+
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	void ConstructL();+
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	+
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	TBool GetState(MASSrvSystemStateObserver::TState& aState);+
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	void AcknowledgeAndRequestStateNotification();+
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	+
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private: // from CActive+
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	void RunL();+
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	void DoCancel();+
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	+
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private:+
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	RSsmStateAwareSession iStateAwareSession;+
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	+
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	RPointerArray<MASSrvSystemStateObserver> iObservers;+
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	RProperty iWorkAroundProperty;+
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	RProperty iAcknowledgement;+
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	TBool iWorkAround;+
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	};+
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+
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#endif+
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