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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __CSTATEMACHINE_H__

    17 #define __CSTATEMACHINE_H__

    18 

    19 #include <e32base.h>

    20 #include <e32cmn.h>

    21 

    22 // Forward declaration

    23 class TState;

    24 

    25 /**

    26  Implements a generic state machine

    27  */

    28 class CStateMachine : public CBase

    29 {

    30 public:

    31     static CStateMachine* NewL(); 

    32     ~CStateMachine();

    33     void MoveTo(int aState);

    34     const TState* AddState(int aState);

    35     const TState* FindState(int aStateId) const;

    36     void SetInitState(int aState);

    37     TInt CurrentStateId() const; 

    38     TInt FromStateId() const;

    39     void SetFromStateId(TInt aStateId);

    40     

    41 private:

    42     CStateMachine();

    43 

    44     // Declared but not defined to disable copy and assignment

    45     CStateMachine(const CStateMachine&);

    46     CStateMachine& operator = (const CStateMachine&);

    47     

    48     const TState* iCurrentState;

    49     TInt iFromStateId;

    50     RPointerArray<const TState> allStates;

    51 };

    52 

    53 #endif // __CSTATEMACHINE_H__

    54