/**

* Copyright (c) 2008-2010 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:

*

*/

/**

 @file

*/

#ifndef WS_DISP_CHANGE_NOTIFY

#define WS_DISP_CHANGE_NOTIFY

#include <graphics/wsdisplaycontrol.h>

#include <e32base.h>

#include <e32cmn.h>

#include "EVENT.H"

class CWsDisplayChangeNotifier : public CActive

	{

	public:

		static CWsDisplayChangeNotifier* NewL(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner);

		void IssueNotificationRequest();

		void CancelNotificationRequest();

		~CWsDisplayChangeNotifier();

	protected:

		void ConstructL();

		virtual void RunL();

		virtual void DoCancel();

	private:

		CWsDisplayChangeNotifier(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner);

		TBool IsResListEqual(RArray<MWsDisplayControl::TResolution>& aResListA, RArray<MWsDisplayControl::TResolution>& aResListB);

		TRequestStatus* iRsStatus;

		MWsDisplayControl* iNextLevelInterface;

		CScreen *iOwner;

		CEventQueueRetry *iRetry;

		RArray<MWsDisplayControl::TResolution> iLastResList;

		TInt iLastErr;

	};

class CWsConfigChangeNotifier : public CActive

	{

	public:

		static CWsConfigChangeNotifier* NewL(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner);

		void IssueNotificationRequest();

		void CancelNotificationRequest();

		void UpdateLastSetConfiguration(TDisplayConfiguration& aNewConfig);

		~CWsConfigChangeNotifier();

	protected:

		void ConstructL();

		virtual void RunL();

		virtual void DoCancel();

	private:

		CWsConfigChangeNotifier(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner);

		TBool IsConfigEqual(TDisplayConfiguration& aConfigA, TDisplayConfiguration& aConfigB);

		TRequestStatus* iRsStatus;

		MWsDisplayControl* iNextLevelInterface;

		CScreen *iOwner;

		CEventQueueRetry *iRetry;

		TDisplayConfiguration iLastConfig;

		// last set screen device SetConfiguration call

		TDisplayConfiguration iLastSetConfig;

	};

#endif