diff -r 000000000000 -r 2e3d3ce01487 contextframework/cfwplugins/displaysourceplugin/inc/displayservicelight.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contextframework/cfwplugins/displaysourceplugin/inc/displayservicelight.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,92 @@
+/*
+* Copyright (c) 2009-2009 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:  CDisplayServiceLight class declaration.
+*
+*/
+
+
+#ifndef DISPLAYSERVICELIGHT_H
+#define DISPLAYSERVICELIGHT_H
+
+// SYSTEM INCLUDE FILES
+#include <hwrmlight.h>
+
+// USER INCLUDE FILES
+#include "displayservicebase.h"
+
+// FORWARD DECLARATIONS
+
+// DATA TYPES
+
+// CLASS DECLARATION
+
+/**
+ * Display light service provides context information about
+ * the display light status.
+ *
+ * @lib None.
+ * @since S60 5.0
+ */
+NONSHARABLE_CLASS( CDisplayServiceLight ): public CDisplayServiceBase,
+public MHWRMLightObserver
+    {
+public:
+
+    /**
+     * Symbian two phased constructors.
+     *
+     * @since S60 5.0
+     * @param aCF Interface to Context Access API.
+     * @return CDisplayServiceLight*
+     */
+    static CDisplayServiceLight* NewL( MCFContextInterface& aCF );
+    static CDisplayServiceLight* NewLC( MCFContextInterface& aCF );
+
+    /**
+     * C++ destructor.
+     */
+    virtual ~CDisplayServiceLight();
+    
+public: // From base classes
+    
+    // @see CDisplayServiceBase
+    virtual void StartL();
+
+    // @see CDisplayServiceBase
+    virtual void Stop();
+    
+    // @see MHWRMLightObserver
+    virtual void LightStatusChanged( TInt aTarget,
+        CHWRMLight::TLightStatus aStatus );
+
+private: // New methods
+
+    // Publishes the display state value
+    void PublishContext( CHWRMLight::TLightStatus aStatus );
+
+private:
+
+    CDisplayServiceLight( MCFContextInterface& aCF );
+    void ConstructL();
+
+private: // Data
+
+    /** HWRM Light client connection */
+    CHWRMLight* iLight;
+
+    /** Last light status stored to avoid publishing state status twice */
+    CHWRMLight::TLightStatus iCurrentStatus;
+    };
+
+#endif // DISPLAYSERVICELIGHT_H