--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/contextengine/hgctxutils/inc/hgproplistener.h	Mon Jan 18 20:10:36 2010 +0200
@@ -0,0 +1,65 @@
+/*
+* ===========================================================================
+*  Name        : HgPropListener.h
+*  Part of     : Hg
+*  Description : Class to get notifications about changes to a P&S property
+*
+*  Copyright © 2008 Nokia Corporation.
+*  This material, including documentation and any related 
+*  computer programs, is protected by copyright controlled by 
+*  Nokia Corporation. All rights are reserved. Copying, 
+*  including reproducing, storing, adapting or translating, any 
+*  or all of this material requires the prior written consent of 
+*  Nokia Corporation. This material also contains confidential 
+*  information which may not be disclosed to others without the 
+*  prior written consent of Nokia Corporation.
+* ===========================================================================
+*/
+
+#ifndef __PROPLISTENER_H__
+#define __PROPLISTENER_H__
+
+#include <e32base.h>
+#include <e32property.h>
+
+/**
+ * Observer interface for getting notifications about a P&S property change.
+ */
+class MHgPropertyChangeObserver
+	{
+public:
+	virtual void PropertyChanged( TUid aCategory, TUint aKey ) = 0;
+	};
+
+/**
+ * Class to get notifications about changes to a P&S property.
+ */
+NONSHARABLE_CLASS( CHgPropertyListener ) : public CActive
+	{
+public:
+    /**
+     * Constructor.
+     * Starts listening for the property with the given category/key.
+     */
+	IMPORT_C CHgPropertyListener( TUid aCategory,
+	    TUint aKey, MHgPropertyChangeObserver& aObserver );
+	    
+	/**
+	 * Destructor.
+	 */
+	IMPORT_C ~CHgPropertyListener();
+    
+private:
+	void DoCancel();
+	void RunL(); 
+	TInt RunError( TInt aError );
+
+	MHgPropertyChangeObserver& iObserver;
+	RProperty iProperty;
+	TUid iCategory;
+	TUint iKey;
+	};
+    
+#endif
+
+// End of file