diff -r 000000000000 -r 5e5d6b214f4f imstutils/imconversationview/imcvuiengine/inc/mimcvngineservicechangeobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imstutils/imconversationview/imcvuiengine/inc/mimcvngineservicechangeobserver.h	Tue Feb 02 10:12:18 2010 +0200
@@ -0,0 +1,86 @@
+/*
+* 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:  service change observer
+*
+*/
+
+
+#ifndef MIMCVENGINESERVICECHANGEOBSERVER_H
+#define MIMCVENGINESERVICECHANGEOBSERVER_H
+
+#include "mimcvenginechatlistobserver.h"  
+
+class MIMCVEngineMessageReadInterface;
+
+/**
+ *  Observer class for getting service status change 
+ *
+ *  @lib imcvengine.lib
+ */
+class MIMCVEngineServiceChangeObserver 
+    {
+
+public:
+
+    /*
+     * new service has been installed
+     */
+    virtual void HandleNewServiceL( TInt aServiceId ) = 0 ;
+    /*
+     *  service has been deleted
+     */
+    virtual void HandleServiceDeletedL( TInt aServiceId )= 0 ;
+        
+    /**
+     * @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  ;
+
+    
+    /**
+     * Handle events.
+     * @param aEvent Event to handle.
+     * @param aContainerInfo, Container
+     */
+    virtual void HandleChatListEvent(TInt aServiceId, TChatListEventType aEvent, 
+                                     MIMCVEngineMessageReadInterface* aContainerInfo
+                                     ) = 0;
+
+
+protected:
+
+    virtual ~MIMCVEngineServiceChangeObserver()
+        {
+
+        }
+
+    };
+
+
+
+#endif // MIMCVENGINESERVICECHANGEOBSERVER_H