// Copyright (c) 2007-2009 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 __CMDREQSWPCHANGE_H__

#define __CMDREQSWPCHANGE_H__

#include "ssmdeferrablecommand.h"

#include <ssm/ssmstatemanager.h>

class TSsmCommandParameters;

class RReadStream;

/**

Built-in command for requesting a system-wide property change

@internalComponent

@released

@see RSsmStateManager

@see TSsmSwp

*/

NONSHARABLE_CLASS (CCmdReqSwpChange) : public CSsmDeferrableCommand

	{

public: 

	static CCmdReqSwpChange* NewL(RReadStream& aReadStream);

	static CCmdReqSwpChange* NewL(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TSsmSwp& aSwpInfo);

#ifdef SYMBIAN_SSM_FLEXIBLE_MERGE

	static CCmdReqSwpChange* NewL(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TSsmSwp& aSwpInfo, const TUint16 aPriority);

#endif

	static CCmdReqSwpChange* NewL(TSsmCommandParameters& aCommandParameters);

	//Must be used only by CLE to reconstruct the command

	static CCmdReqSwpChange* NewLC(const CCmdReqSwpChange& aCmdReqSwpChange);

	~CCmdReqSwpChange();

	// from MSsmCommand

	TSsmCommandType Type() const;

	void ExternalizeL(RWriteStream& aWriteStream) const;

	void Execute(TRequestStatus& aStatus);

	void ExecuteCancel();

	void Release();

	inline TSsmSwp SsmSwpInfo() const {return iSwpInfo;}

protected:

	// from CActive

	void RunL();

	void DoCancel();

private:	

	CCmdReqSwpChange();

	CCmdReqSwpChange(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, TSsmSwp aSwpInfo);

#ifdef SYMBIAN_SSM_FLEXIBLE_MERGE

	CCmdReqSwpChange(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, TSsmSwp aSwpInfo, const TUint16 aPriority);

#endif

	void InternalizeL(RReadStream& aReadStream);

	void ConstructL(RReadStream& aReadStream);

	void ConstructL(TSsmCommandParameters& aCommandParameters);

	void ConstructL();

	void ConstructL(const CCmdReqSwpChange& aCmdReqSwpChange);

	static TInt MaxSupportedVersion();

private:

	RSsmStateManager iSsmStateManager;	// interface to State Management Server

	TSsmSwp iSwpInfo;					// property info

	};

#endif // __CMDREQSWPROPCHANGE_H__