// 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 __SSMDEFERRABLECOMMAND_H__

#define __SSMDEFERRABLECOMMAND_H__

#include "ssmcommandbase.h"

/** Abstract interface to a built-in command.

	All commands that support MultipleWait should derive from this interface.

@internalComponent

@released

*/

NONSHARABLE_CLASS (CSsmDeferrableCommand) : public CSsmCommandBase

	{

public:

	~CSsmDeferrableCommand();

	// from MSsmCommand

	TBool IsDeferred() const;

	TInt CompletionStatus() const;

	void RegisterCompletionObserver(TRequestStatus& aStatus);

	void RegisterCompletionObserverCancel();

	TBool EvaluateCondition(MSsmConditionalCallback* aCallback, CResourceFile* aResourceFile);

	TSsmExecutionBehaviour ExecutionBehaviour() const;

protected:

	CSsmDeferrableCommand();

	CSsmDeferrableCommand(TCmdErrorSeverity aSeverity);

	CSsmDeferrableCommand(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour);

#ifdef SYMBIAN_SSM_FLEXIBLE_MERGE

	CSsmDeferrableCommand(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TUint16 aPriority);

	CSsmDeferrableCommand(TCmdErrorSeverity aSeverity, const TUint16 aPriority);

#endif

	void CompleteDeferredExecuteRequest(TInt aReason);

	virtual	void ValidateL();

protected:

	TInt iCompletionStatus;					// contains the ongoing status of the deferred command

	TRequestStatus* iCompletionObserver; 	// Notifies command completion if registered through RegisterCompletionObserver().

	TSsmExecutionBehaviour iExecutionBehaviour;

	};

#endif // __SSMDEFERRABLECOMMAND_H__