diff -r 666f914201fb -r 2fe1408b6811 epoc32/include/sensrvpropertylistener.h
--- a/epoc32/include/sensrvpropertylistener.h	Tue Nov 24 13:55:44 2009 +0000
+++ b/epoc32/include/sensrvpropertylistener.h	Tue Mar 16 16:12:26 2010 +0000
@@ -1,1 +1,106 @@
-sensrvpropertylistener.h
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
+* which accompanies this distribution, and is available
+* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Property listener callback interface
+*
+*/
+
+
+#ifndef SENSRVPROPERTYLISTENER_H
+#define SENSRVPROPERTYLISTENER_H
+
+
+#include <e32base.h>
+#include <sensrvtypes.h>
+#include <sensrvproperty.h>
+#include <sensrvchannel.h>
+
+// CLASS DECLARATIONS
+
+/**
+* Property listener callback interface to indicate when a property has changed or when
+* clients access to setting properties has changed.
+* 
+* This class is for use with the CSensrvChannel::SetPropertyListenerL() method. Clients wishing
+* to use property listening must inherit from this class and provide a reference to an instance
+* of it in CSensrvChannel::SetPropertyListenerL().
+* 
+* @see CSensrvChannel::SetPropertyListenerL()
+* @lib sensrvclient.lib
+* @since S60 5.0
+*/
+class MSensrvPropertyListener
+    {
+    public:
+    /**
+    * Callback implemented by a client so that they can be notified when the value of a
+    * property has changed. The client that set the property will not be notified.
+    * 
+    * Clients providing an implementation for this callback must ensure that the operation does
+    * not leave. If a leave does occur then the behaviour is undefined.
+    * 
+    * @since S60 5.0
+    * @param  aChannel Channel associated with the listener
+    * @param  aChangedProperty The property that has changed
+    */  
+    virtual void PropertyChanged( CSensrvChannel& aChannel, 
+                                  const TSensrvProperty& aChangedProperty ) = 0;
+
+    /**
+    * Callback implemented by a client so that they can be notified when property listening
+    * has failed. If the error is fatal the channel will be closed, the sensor server session
+    * has been terminated and the channel object is no longer useable. If the error is minor,
+    * some property changes have potentially been missed, however listening is still active.
+    * 
+    * Clients providing an implementation for this callback must ensure that the operation does
+    * not leave. If a leave does occur then the behaviour is undefined.
+    * 
+    * @since S60 5.0
+    * @param  aChannel Channel associated with the listener
+    * @param  aError The error severity
+    */
+    virtual void PropertyError( CSensrvChannel& aChannel, 
+                                TSensrvErrorSeverity aError ) = 0;
+    
+    /**
+    * Callback implemented by a client so that they can be notified when the clients access for 
+    * setting properties has changed.
+    * 
+    * Clients providing an implementation for this callback must ensure that the operation does
+    * not leave. If a leave does occur then the behaviour is undefined.
+    * 
+    * @since S60 5.0
+    * @param  aIndication Indication of the clients access for setting of properties  
+    */
+    virtual void SetPropertySuccessIndicationChanged( 
+                 TSetPropertySuccessIndicator aIndication ) = 0;
+        
+    /** 
+    * Callback to future proof this API so that additional callbacks can be added in the future 
+    * without breaking binary compatibility.
+    * 
+    * @param  aInterfaceUid Identifier for the interface to be retrieved
+    * @param  aInterface A reference to a pointer for the specified interface. Implementation sets
+    * aInterface to a valid pointer if the M-class identified by aInterfaceUid is supported, otherwise
+    * it is set to NULL on exit.
+    * 
+    * @since S60 5.0
+    * @leave  One of the system-wide error codes
+    */
+	virtual void GetPropertyListenerInterfaceL( TUid aInterfaceUid, TAny*& aInterface ) = 0;
+
+    };
+    
+#endif //SENSRVPROPERTYLISTENER_H
+
+// End of File