diff -r 000000000000 -r 5e5d6b214f4f imstutils/imconversationview/imcvuiengine/inc/mimcvenginechatlistobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imstutils/imconversationview/imcvuiengine/inc/mimcvenginechatlistobserver.h	Tue Feb 02 10:12:18 2010 +0200
@@ -0,0 +1,68 @@
+/*
+* 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:  Observer interface to handle chat container changes.
+*
+*/
+
+
+#ifndef __MIMCVEngineChatListObserverOBSERVER_H__
+#define __MIMCVEngineChatListObserverOBSERVER_H__
+
+//  INCLUDES
+#include <e32def.h>
+
+//	FORWARD CLASS DECLERATIONS
+class MIMCVEngineMessageReadInterface;
+
+// CLASS DECLARATION
+
+
+enum TChatListEventType
+    {
+    EChatItemAdded,
+    EChatItemDeleted,
+    EChatAllItemDeleted,
+    EEventNotSpecified
+    };
+/**
+ *  Observer interface to handle messages container changes.
+ *
+ *  @lib imcvuiengine.dll
+ *  @since 5.0
+ */
+class MIMCVEngineChatListObserver
+	{
+	
+	public: // Interface
+
+		/**
+		 * Handle events.
+		 * @param aEvent Event to handle.
+		 * @param aContainerInfo, Container
+		 */
+		virtual void HandleChatListEvent( TInt aServiceId, TChatListEventType aEvent, 
+								MIMCVEngineMessageReadInterface* aContainerInfo
+								 ) = 0;
+
+	protected: // For protection.
+
+		/**
+		 * Destructor
+		 */
+		virtual ~MIMCVEngineChatListObserver(){}
+	};
+
+#endif      // __MIMCVEngineChatListObserverOBSERVER_H__
+
+// End of File