--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resourcemgmt/hwresourcesmgr/extendedlight/inc/HWRMExtendedLightStatusObserver.h	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,127 @@
+/*
+* Copyright (c) 2006-2009 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:
+*
+*/
+
+
+
+
+/**
+ @file
+ @internalTechnology 
+*/
+
+#ifndef HWRMEXTENDEDLIGHTSTATUSOBSERVER_H
+#define HWRMEXTENDEDLIGHTSTATUSOBSERVER_H
+
+// INCLUDES
+#include <e32base.h>
+#include <hwrm/hwrmextendedlight.h>
+#include <e32property.h>
+#include "HWRMCmn.h"
+
+// FORWARD DECLARATIONS
+// None
+
+/**
+* Active object wrapper for Publish and Subscribe one-shot notification handling.
+* Listens for changes in light status and notifies the client.
+*
+*/
+NONSHARABLE_CLASS(CHWRMExtendedLightStatusObserver) : public CActive
+    {
+    public:
+
+        /**
+        * This is a two-phase constructor method that is used to
+        * create a new instance of CHWRMExtendedLightStatusObserver.
+        * A newly created instance immediately starts listening to light status changes.
+        *
+        * @param aCallback Pointer to a callback instance. Can be NULL.
+        * @param aSupportedTargets Mask of supported targets.
+        * @return A pointer to a new instance of the CHWRMExtendedLightStatusObserver class.
+        */
+        static CHWRMExtendedLightStatusObserver* NewL(MHWRMExtendedLightObserver* aCallback,
+                                                      TInt aSupportedTargets);
+
+        /**
+        * Destructor.
+        */
+        virtual ~CHWRMExtendedLightStatusObserver();
+        
+        /**
+        * This method retrieves the current light status. 
+        *
+        * @return TLightStatus indicating the current light status
+        */
+        CHWRMExtendedLight::TLightStatus CurrentStatus(TInt aTarget) const;
+
+    protected:
+
+        // From CActive
+        void RunL();
+        void DoCancel();
+
+    private:
+
+        /**
+        * Constructor
+        *
+        * @param aCallback Pointer to a callback instance.
+        * @param aSupportedTargets Mask of supported targets.
+        */
+        CHWRMExtendedLightStatusObserver(MHWRMExtendedLightObserver* aCallback,
+                                         TInt aSupportedTargets);
+                                                   
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+
+        /*
+        * Order notification
+        */
+        void OrderNotification();
+
+        /**
+        * Notifies the callback about value changes.
+        *
+        * @param aStatusList New status values obtained from P&S
+        */
+        void NotifyCallback( RLightStatusArray& aStatusList  );
+
+        /**
+        * Finds item from iLastStatusValue by target.
+        */
+        static TInt FindByTarget( const TInt* aTarget, 
+                                  const THWRMStatusInfo& aItem );
+
+        /**
+        * Initializes RLightStatusArray.
+        */
+        TInt InitializeStatusArray( RLightStatusArray& aArray ) const;
+        
+    private:
+        
+        MHWRMExtendedLightObserver* iCallback; // Not owned by this class. Can be NULL.
+        RProperty iProperty;           // P&S property
+        TInt iSupportedTargets;        // Mask of supported targets
+        RLightStatusArray iLastStatusValue; // Keeps track of last received status value
+        RLightStatusArray iStatusUnknownList; // All targets status unknown, RunError() uses.
+    };
+
+#endif      // HWRMLIGHTSTATUSOBSERVER_H
+
+// End of File