/*

* 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:

*

*/

/**

@file

@internalComponent

*/

#ifndef WINDOWMANAGER_H_

#define WINDOWMANAGER_H_

#include <e32msgqueue.h>

#include <w32std.h>

/**

 * Encapsulates the resources used to provide a window to render to via Graphic Surfaces.

 * Proxies certain methods so that they can be used by arbitary threads.

 */

class CWindowManager : public CActive

	{

private:

	enum TCommand

		{

		ERegisterSurface,

		ESetBackgroundSurface

		};

	struct TMessage

		{

		TCommand iCommand;

		TAny* iParam1;

		TInt iParam2;

		};

public:

	static CWindowManager* NewL();

	~CWindowManager();

	TSize ScreenSize() const;

	TInt RegisterSurface(TSurfaceId& aSurfaceId);

	TInt SetBackgroundSurface(TSurfaceConfiguration& aSurfaceConfig, TBool aTriggerRedraw);

	void Flush();

private:

	CWindowManager();

	void ConstructL();

	void RunL();

	void DoCancel();

	TInt RunCommand(TCommand aCommand, TAny* aParam1, TInt aParam2 = 0);

	TInt DoCommand(TCommand aCommand, TAny* aParam1, TInt aParam2);

private:

	RMsgQueue<TMessage> iMsgQueue;

	RSemaphore iSemaphore;

	TInt iReturnCode;

	TThreadId iCreatorThreadId;

	RWsSession iWsSession;

	CWsScreenDevice* iWsSd;		// Screen Device for this WServ session.

	RWindowGroup iWindowGroup;	// Window group of the AO windows.

	RWindow* iWindow;

	TSize iScreenSize;

	};

#endif /* WINDOWMANAGER_H_ */