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: // Implementation of finite state machine
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalTechnology
sl@0: */
sl@0: 
sl@0: #include "t_ms_main.h"
sl@0: #include "cstatemachine.h"
sl@0: #include "tstate.h"
sl@0: 
sl@0: CStateMachine* 
sl@0: CStateMachine::NewL()
sl@0: 	{
sl@0: 	return new (ELeave) CStateMachine;
sl@0: 	}
sl@0: 	
sl@0: CStateMachine::CStateMachine()
sl@0: 	{
sl@0:     // Intentionally left blank
sl@0: 	}
sl@0: 
sl@0: CStateMachine::~CStateMachine()
sl@0: 	{
sl@0:     allStates.ResetAndDestroy();
sl@0: 	}
sl@0: 
sl@0: void
sl@0: CStateMachine::MoveTo(int aStateId)
sl@0: 	{
sl@0:     if (!iCurrentState)
sl@0:     	{
sl@0:         test.Printf(_L("The current state is undefined\n"));
sl@0:         test(EFalse);
sl@0:     	}
sl@0: 
sl@0:     iCurrentState->MoveTo(aStateId);
sl@0:     iCurrentState = FindState(aStateId);
sl@0: 	}
sl@0: 
sl@0: const TState*
sl@0: CStateMachine::AddState(int aStateId)
sl@0: 	{
sl@0:     const TState* state = FindState(aStateId);
sl@0: 
sl@0:     if (state == 0)
sl@0:     	{
sl@0:          switch (aStateId)
sl@0:          	{
sl@0:          case EUsbMsDriveState_Disconnected:
sl@0:              state = new TDisconnected();
sl@0:              break;
sl@0:          case EUsbMsDriveState_Connecting:
sl@0:              state = new TConnecting();
sl@0:              break;
sl@0:          case EUsbMsDriveState_Connected:
sl@0:              state = new TConnected();
sl@0:              break;     
sl@0:          case EUsbMsDriveState_Disconnecting:
sl@0:              state = new TDisconnecting();
sl@0:              break;
sl@0:          case EUsbMsDriveState_Active:
sl@0:              state = new TActive();
sl@0:              break;
sl@0:          case EUsbMsDriveState_Locked:
sl@0:              state = new TLocked();
sl@0:              break;
sl@0:          case EUsbMsState_Read:
sl@0:              state = new TRead();
sl@0:              break;
sl@0:          case EUsbMsState_Written:
sl@0:              state = new TWritten();
sl@0:              break;
sl@0:          default:
sl@0:              break;
sl@0:          	}
sl@0:     
sl@0:          if (state)
sl@0:          	{
sl@0:              allStates.Append(state);
sl@0:          	}
sl@0:     	}
sl@0: 
sl@0:     return state;
sl@0: 	}
sl@0: 
sl@0: void
sl@0: CStateMachine::SetInitState(int aStateId)
sl@0: 	{
sl@0:     iCurrentState = FindState(aStateId);
sl@0:     iFromStateId = aStateId;
sl@0: 	}
sl@0: 
sl@0: const TState* 
sl@0: CStateMachine::FindState(int aStateId) const
sl@0: 	{
sl@0:     TInt count = allStates.Count();
sl@0:     for (TInt i = 0; i < count; i++)
sl@0:     	{
sl@0:         if (allStates[i]->GetStateId() == aStateId)
sl@0:         	{
sl@0:             return allStates[i];
sl@0:         	}
sl@0:     	}
sl@0: 
sl@0:     return 0;
sl@0: 	}
sl@0: 
sl@0: TInt CStateMachine::CurrentStateId() const
sl@0: 	{
sl@0: 	return iCurrentState->GetStateId();
sl@0: 	}
sl@0: 
sl@0: TInt CStateMachine::FromStateId() const
sl@0: 	{
sl@0: 	return iFromStateId;
sl@0: 	}
sl@0: 
sl@0: void CStateMachine::SetFromStateId(TInt aStateId)
sl@0: 	{
sl@0: 	iFromStateId = aStateId;
sl@0: 	}