// 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 __SSMCOMMAND_H__

#define __SSMCOMMAND_H__

#include <ssm/ssmcmd.hrh>

class RWriteStream;

class MSsmConditionalCallback;

class CResourceFile;

const TInt KSsmCommandPending = KRequestPending;

/** Interface to a command.

@publishedPartner

@released

*/

class MSsmCommand

	{

public:

	virtual void Execute(TRequestStatus& aStatus) = 0;

	virtual void Release() = 0;		

	virtual void ExecuteCancel() = 0;

	virtual TSsmCommandType Type() const = 0;

	virtual void ExternalizeL(RWriteStream& aWriteStream) const = 0;

	virtual TBool IsDeferred() const = 0;

	virtual TCmdErrorSeverity Severity() const = 0;

	virtual TInt CompletionStatus() const = 0;

	virtual	void RegisterCompletionObserver(TRequestStatus& aStatus) = 0;

	virtual	void RegisterCompletionObserverCancel() = 0;

	virtual TSsmExecutionBehaviour ExecutionBehaviour() const = 0;

	virtual void SetConditionalInformation(TInt aConditionalInformation) = 0;

	virtual TInt ConditionalInformation() const = 0;

	virtual TBool EvaluateCondition(MSsmConditionalCallback* aCallback, CResourceFile* aResourceFile) = 0;

	};

#endif // __SSMCOMMAND_H__