--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/contextengine/tsctxutils/inc/tsproplistener.h	Tue Jan 26 11:48:23 2010 +0200
@@ -0,0 +1,64 @@
+/*
+* Copyright (c) 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 CTSPROPERTYLISTENER_H
+#define CTSPROPERTYLISTENER_H
+
+#include <e32base.h>
+#include <e32property.h>
+
+/**
+ * Observer interface for getting notifications about a P&S property change.
+ */
+class MTsPropertyChangeObserver
+    {
+public:
+    virtual void PropertyChanged( TUid aCategory, TUint aKey ) = 0;
+    };
+
+/**
+ * Class to get notifications about changes to a P&S property.
+ */
+NONSHARABLE_CLASS( CTsPropertyListener ) : public CActive
+    {
+public:
+    /**
+     * Constructor.
+     * Starts listening for the property with the given category/key.
+     */
+    IMPORT_C CTsPropertyListener( TUid aCategory,
+        TUint aKey, MTsPropertyChangeObserver& aObserver );
+        
+    /**
+     * Destructor.
+    */
+    IMPORT_C ~CTsPropertyListener();
+    
+private:
+    void DoCancel();
+    void RunL(); 
+    TInt RunError( TInt aError );
+
+    MTsPropertyChangeObserver& iObserver;
+    RProperty iProperty;
+    TUid iCategory;
+    TUint iKey;
+    };
+
+#endif /*CTSPROPERTYLISTENER_H*/
+
+// End of file