--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysstatemgmt/systemstatemgr/inc/ssmstateawaresession.h	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,107 @@
+// Copyright (c) 2007-2009 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 __SSMSTATEAWARESESSION_H__
+#define __SSMSTATEAWARESESSION_H__
+
+#include <e32base.h>
+#include <domaindefs.h>
+
+#include <ssm/ssmstate.h>
+
+class CSsmStateMonitor;
+
+/**
+Read-only client interface to receive notifications when the
+System State changes.
+
+CSsmStateAwareSession wraps this class in an active object.
+
+@see CSsmStateAwareSession 
+@publishedPartner
+@released
+*/
+NONSHARABLE_CLASS(RSsmStateAwareSession)
+	{
+public:
+	IMPORT_C RSsmStateAwareSession();
+	IMPORT_C TInt Connect(TDmDomainId aId);
+	IMPORT_C void Close();
+	IMPORT_C TSsmState State() const;
+	IMPORT_C void RequestStateNotification(TRequestStatus& aStatus);
+	IMPORT_C void RequestStateNotificationCancel();
+	IMPORT_C void AcknowledgeStateNotification(TInt aError);
+	IMPORT_C void AcknowledgeAndRequestStateNotification(TInt aError, TRequestStatus& aStatus);
+private:
+	RSsmStateAwareSession(const RSsmStateAwareSession& aState);
+	
+private:
+	//The main reason for this class is to hide implementation details that might change
+	class RPrivateImpl;
+	RPrivateImpl* iPimpl;
+	};
+
+/**
+Interface to implement for clients that want to use the @c CSsmStateAwareSession 
+utility class.
+
+@publishedPartner
+@released
+*/
+class MStateChangeNotificationSubscriber
+    {
+public:
+	/** 
+	@c StateChanged is called when the System State have changed
+	@param aSsmState contains the new System State
+	@see TSsmMainSystemStates
+	*/
+	virtual void StateChanged(TSsmState aSsmState) = 0;
+	};	
+
+/**
+Utility class for monitoring the System State. Maintains a list of 
+subscribers that share a single active object. When the System State
+changes the subscribers will be notified in the order
+they were added to the list of subscribers.
+
+@see TSsmMainSystemStates
+@see RSsmStateAwareSession
+@publishedPartner
+@released
+*/
+NONSHARABLE_CLASS(CSsmStateAwareSession) : public CBase
+	{
+public:
+	IMPORT_C static CSsmStateAwareSession* NewL(TDmDomainId aId);
+	IMPORT_C static CSsmStateAwareSession* NewLC(TDmDomainId aId);
+	IMPORT_C ~CSsmStateAwareSession();
+	IMPORT_C TSsmState State() const;
+	IMPORT_C void AddSubscriberL(MStateChangeNotificationSubscriber& aSubscriber);	
+	IMPORT_C void RemoveSubscriber(const MStateChangeNotificationSubscriber& aSubscriber);
+	// for CSsmStateMonitor
+	void NotifySubscribers(TSsmState aNewState);
+	
+private:
+	CSsmStateAwareSession();
+	void ConstructL(TDmDomainId aId);
+	
+private:
+	RPointerArray<MStateChangeNotificationSubscriber> iSubscribers; // Elements of the array are not owned.
+	CSsmStateMonitor* iMonitor;
+	TInt iSpare[4];
+	};
+	
+#endif