// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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 __CSTATEMACHINE_H__

#define __CSTATEMACHINE_H__

#include <e32base.h>

#include <e32cmn.h>

// Forward declaration

class TState;

/**

 Implements a generic state machine

 */

class CStateMachine : public CBase

{

public:

    static CStateMachine* NewL(); 

    ~CStateMachine();

    void MoveTo(int aState);

    const TState* AddState(int aState);

    const TState* FindState(int aStateId) const;

    void SetInitState(int aState);

    TInt CurrentStateId() const; 

    TInt FromStateId() const;

    void SetFromStateId(TInt aStateId);

private:

    CStateMachine();

    // Declared but not defined to disable copy and assignment

    CStateMachine(const CStateMachine&);

    CStateMachine& operator = (const CStateMachine&);

    const TState* iCurrentState;

    TInt iFromStateId;

    RPointerArray<const TState> allStates;

};

#endif // __CSTATEMACHINE_H__