--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysstatemgmt/systemstatemgr/ssm/inc/ssmstatetransitionengine.h	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,104 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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 __SSMSTATETRANSITIONENGINE_H__
+#define __SSMSTATETRANSITIONENGINE_H__
+
+#include <e32base.h>
+#include <ssm/ssmstatetransition.h>
+#include <ssm/ssmstatepolicy.h>
+#include <ssm/ssmcmd.hrh>
+
+class CSsmStatePolicyFrame;
+class CSsmCommandList;	
+class MCleSessionProxy;
+class MSsmStatePolicyResolverProxy;
+class CSsmStateTransitionRequest;
+
+/** 
+The CSsmStateTransitionEngine class is responsible for drivingin 
+System State Changes by requesting answers and actions from System State 
+Policy implememtations and the Command List Execution Server.
+
+@internalComponent
+@released
+*/		
+class CSsmStateTransitionEngine : public CActive
+	{
+public:
+	static CSsmStateTransitionEngine* NewL(MSsmStatePolicyResolverProxy* aResolver, MCleSessionProxy* aCleSession);
+	static CSsmStateTransitionEngine* NewLC(MSsmStatePolicyResolverProxy* aResolver, MCleSessionProxy* aCleSession);
+	~CSsmStateTransitionEngine();
+	
+	TSsmStateTransition const* CurrentTransition() const;
+	TSsmStateTransition const* QueuedTransition() const;
+	
+	MSsmStatePolicy::TResponse TransitionAllowed(const TSsmStateTransition& aRequest, const RMessagePtr2& aMessage);
+	void SubmitL(const TSsmStateTransition& aRequest);
+	void SubmitL(const TSsmStateTransition& aRequest, const RMessage2& aMessage);
+	void Cancel(CSession2*);
+	void PerformCommandListValidation(TBool aSetting);
+#ifdef _DEBUG
+	void CleanupTransitionEngine();
+#endif
+	
+protected:
+	//from CActive
+	void DoCancel();
+	void RunL();
+	TInt RunError(TInt aError);
+
+private:
+	CSsmStateTransitionEngine(MSsmStatePolicyResolverProxy* aResolver, MCleSessionProxy* aCleSession);
+	void DoSubmit(CSsmStateTransitionRequest* aRequest);
+	void Start();
+	void ShiftQueueIfNeeded();
+	CSsmStatePolicyFrame* Policy();
+	void DoConnectCleSessionL();
+	void DoStartTransitionL();
+	void DoInitialize();
+	void DoPrepareCommandList();
+	void DoExecuteCommandList();
+	void DoValidation();
+	TBool FurtherTransition();
+	TBool InTransition() const;
+	
+private:
+	enum TInternalActions
+		{
+		EUnConnected,
+		EIdle,
+		EStartTransition,
+		EInitialize,
+		EPrepareCommandList,
+		EExecuteCommandList,
+		EReadNextTransition
+		};
+
+	MSsmStatePolicyResolverProxy& iResolver;
+	MCleSessionProxy& iCleSession;
+	TBool iPerformCommandListValidation;
+
+	CSsmStateTransitionRequest* iQueuedTransition;
+	CSsmStateTransitionRequest* iCurrentTransition;
+ 	
+ 	TSsmState iTargetSystemState;		 	
+	TInternalActions iNextAction;
+	/** The severity of the current command*/
+	TCmdErrorSeverity iSeverity;
+	CSsmCommandList* iCommandList;
+	};
+
+#endif