diff -r 1fc85118c3ae -r 870918037e16 eventsui/eventsengine/inc/evtmgmtuilbtobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eventsui/eventsengine/inc/evtmgmtuilbtobserver.h	Wed Sep 01 12:31:27 2010 +0100
@@ -0,0 +1,78 @@
+/*
+* 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 "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:  It is observer class to handle lbt operations
+*
+*/
+
+
+#ifndef EVTMGMTUILBTOBSERVER_H_
+#define EVTMGMTUILBTOBSERVER_H_
+
+#include <e32base.h>        // CBase
+
+#include <lbtcommon.h>
+
+class MEvtMgmtUiLbtObserver
+    {
+public:
+    /*
+     *  Type of Trigger Change
+     */
+    enum TLbtTriggerChangeType
+        {
+        /*
+         * If multiple triggers are modified
+         */
+        ETriggerMultipleModified,
+        /*
+         * If a trigger is modified
+         */
+        ETriggerModified,
+        /*
+         * If a trigger is deleted
+         */
+        ETriggerDeleted
+        };
+public:
+    /**
+     * It will be used to notify observer that the trigger which is
+     * owned by EventsUi has been modified outside, either by Manger Ui
+     * or Event Handler
+     * @param aTriggerId trigger id of newly created trigger
+     * @param aType It will contain type of trigger change              
+     */
+    virtual void NotifyTriggerChangeL( const TLbtTriggerId &  aTriggerId,
+    											TLbtTriggerChangeType aType )=0;
+    
+    /**
+     * It will be used to notify observer that lbt operation
+     * has be completed
+     * @param aTriggerId trigger id of newly created trigger
+     * @param aState It will contain the the operation type              
+     */
+    virtual void NotifyLbtChangeL(TLbtTriggerId &  aTriggerId,TInt aState )=0;
+    
+    /**
+     * It will be used to notify observer that lbt operation
+     * has be failed
+     * @param aState It will contain the the operation type
+     * @param aErrorCode It will contain the status of the operation
+     *                KErrNone if successful otherwise error status code          
+     */
+    virtual void NotifyLbtError(TInt aErrorCode, TInt aState )=0;
+    };
+
+
+
+#endif //EVTMGMTUILBTOBSERVER_H_
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