// 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__