--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/psln/Inc/PslnPropertySubscriber.h	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,86 @@
+/*
+* Copyright (c) 2005-2006 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:  Property subscriber.
+*
+*/
+
+
+
+#ifndef C_PSLNPROPERTYSUBSCRIBER_H
+#define C_PSLNPROPERTYSUBSCRIBER_H
+
+#include    <e32base.h>
+#include    <e32property.h>
+
+/**
+*  Property subscriber wrapper class.
+*  Implements callback when property's value changes.
+*
+*  @since S60 v3.1
+*/
+class CPslnPropertySubscriber : public CActive
+    {
+    public:
+
+        /**
+        * C++ constructor.
+        *
+        * NOTE that callback method is NOT allowed to leave. If it leaves,
+        * subscription is not activated after the leave.
+        *
+        * @param aCallBack callback method to handle notification of a change
+        *        to client.
+        * @param aProperty property to subscribe.
+        */
+        CPslnPropertySubscriber( TCallBack aCallBack, RProperty& aProperty );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CPslnPropertySubscriber();   
+        
+        /**
+        * Subscribe property. 
+        * To stop subscription, just call Cancel.
+        */
+        void Subscribe();
+
+        /**
+        * From CActive. 
+        * Called when Active Object is ready.
+        */
+        void RunL();
+        
+        /**
+        * From CActive. 
+        * Called when Active Object has been cancelled.
+        */
+        void DoCancel();
+
+    private:    // Data
+        /**
+        * Callback harness.
+        */
+        TCallBack   iCallBack;
+
+        /**
+        * Publish & Subsribe property.
+        */
+        RProperty&  iProperty;
+
+    };
+
+#endif      // C_PSLNPROPERTYSUBSCRIBER_H
+            
+// End of File