--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/uiutilities/inc/mglxsimpleobservable.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,52 @@
+/*
+* 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:    Provides a simple observable interface.
+*
+*/
+
+
+
+
+#ifndef M_GLXSIMPLEOBSERVABLE_H
+#define M_GLXSIMPLEOBSERVABLE_H
+
+#include <e32base.h>
+#include "glxsimpleobserverevents.h"
+
+class MGlxSimpleObserver;
+
+/**
+ *  MGlxSimpleObservable
+ *
+ *  Provides a simple observable interface.
+ *
+ *  @lib glxhuiutils.lib
+ */
+class MGlxSimpleObservable
+    {
+public:
+    /**
+    * Registers an observer if not previously registered
+    * @param aObserver The observer concerned
+    */
+    virtual void RegisterObserverL( MGlxSimpleObserver* aObserver ) = 0;
+
+    /**
+    * Deregisters an observer if previously registered
+    * @param aObserver The observer concerned
+    */
+    virtual void DeregisterObserver( MGlxSimpleObserver* aObserver ) = 0;
+    };
+    
+#endif // M_GLXSIMPLEOBSERVABLE_H