--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappsrv_plat/comms_event_api/inc/mceeventobserver.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,85 @@
+/*
+* Copyright (c) 2005 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:    
+*
+*/
+
+
+
+
+#ifndef MMCEEVENTOBSERVER_H
+#define MMCEEVENTOBSERVER_H
+
+// INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CMceEvent;
+class TMceTransactionDataContainer;
+
+// CLASS DECLARATION
+
+/**
+*  An interface to be implemented by users of MCE if they wish to use
+*  events.
+*
+*  This observer is set using CMceManager::SetEventObserver function.
+*
+*  @lib mceclient.lib
+*/
+class MMceEventObserver
+    {
+    public: // New functions
+        
+        /**
+        * The state of the event has changed.
+        * @param aEvent, the event that has changed.
+	    * @param aContainer, if present, holds details of
+	    *        transaction causing state change.
+        */
+        virtual void EventStateChanged(
+        			CMceEvent& aEvent,
+    				TMceTransactionDataContainer* aContainer ) = 0;
+
+		/**
+		* The state of the event has changed.
+		* @param aEvent, event received notification.
+	    * @param aContainer, if present, holds details of
+	    *        transaction causing state change.
+		*/
+		virtual void NotifyReceived(
+					CMceEvent& aEvent,
+    				TMceTransactionDataContainer* aContainer ) = 0;
+					
+					
+	    /**
+	    * The state of the event used by the refer has changed.
+	    * @param aEvent, the event that has changed.
+	    * @param aActive, ETrue if connection active, EFalse if connection inactive.
+	    */
+	    virtual void EventConnectionStateChanged(
+	                CMceEvent& aEvent,
+	                TBool aActive ) = 0;
+        
+		/**
+		* An error has occurred concerning a specific SIP event.
+		* Note, that each error causes the event state to be ETerminated.
+		* @param aEvent, The event raising the error.
+		* @param aError, Error code
+		*/
+		virtual void Failed(CMceEvent& aEvent, TInt aError ) = 0;
+
+    };
+
+#endif