sl@0: // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #ifndef __CSTATEMACHINE_H__
sl@0: #define __CSTATEMACHINE_H__
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <e32cmn.h>
sl@0: 
sl@0: // Forward declaration
sl@0: class TState;
sl@0: 
sl@0: /**
sl@0:  Implements a generic state machine
sl@0:  */
sl@0: class CStateMachine : public CBase
sl@0: {
sl@0: public:
sl@0:     static CStateMachine* NewL(); 
sl@0:     ~CStateMachine();
sl@0:     void MoveTo(int aState);
sl@0:     const TState* AddState(int aState);
sl@0:     const TState* FindState(int aStateId) const;
sl@0:     void SetInitState(int aState);
sl@0:     TInt CurrentStateId() const; 
sl@0:     TInt FromStateId() const;
sl@0:     void SetFromStateId(TInt aStateId);
sl@0:     
sl@0: private:
sl@0:     CStateMachine();
sl@0: 
sl@0:     // Declared but not defined to disable copy and assignment
sl@0:     CStateMachine(const CStateMachine&);
sl@0:     CStateMachine& operator = (const CStateMachine&);
sl@0:     
sl@0:     const TState* iCurrentState;
sl@0:     TInt iFromStateId;
sl@0:     RPointerArray<const TState> allStates;
sl@0: };
sl@0: 
sl@0: #endif // __CSTATEMACHINE_H__
sl@0: