diff -r 3104fc151679 -r 9a48e301e94b imstutils/imconversationview/imcvuiengine/inc/mimcvenginemessagehandlerobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imstutils/imconversationview/imcvuiengine/inc/mimcvenginemessagehandlerobserver.h	Wed Sep 01 12:33:36 2010 +0100
@@ -0,0 +1,69 @@
+/*
+* 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:  message handler observer
+*
+*/
+
+#ifndef MIMCVENGINEMESSAGEHANDLEROBSERVER_H
+#define MIMCVENGINEMESSAGEHANDLEROBSERVER_H
+
+//  INCLUDES
+#include <e32def.h>
+#include <e32base.h>
+#include "imcvuiliterals.h"
+#include "mimcvenginemessage.h"
+//	FORWARD CLASS DECLERATIONS
+    
+     
+// CLASS DECLARATION
+/**
+ *  presence handler interface
+ *
+ *  @lib imcvengine.dll
+ *  @since 5.0
+ */
+class MIMCVEngineMessageHandlerObserver
+    {
+    public: 
+    
+        /**
+        * @see handle the presence change notification
+        * to handle the connection lost
+        */
+        virtual void HandlePresenceChangedL(TInt aServiceId, const TDesC& aBuddyId ) = 0 ;
+        
+        /**
+        * Handle message send operation completion.
+        * @param aResult result  to handle.
+        */
+        virtual void HandleOperationCompletdL(TInt aserviceId, MIMCVEngineMessage::TMessagerType aType , TInt aResult) = 0 ;
+        
+        /**
+         * @see HandleConnectionTerminatedL
+         * to handle the connection lost
+         * @param aReason, reason report
+         */
+        virtual void HandleConnectionEventL(TInt aServiceId, TIMCVConnectionState aState, TInt aReason )  = 0  ;
+    
+    protected: // For protection.
+    
+        /**
+        * Destructor for protection
+        */
+        virtual ~MIMCVEngineMessageHandlerObserver(){}
+        
+};
+#endif      // MIMCVENGINEHANDLEROBSERVER_H
+
+// End of File