diff -r a36b1e19a461 -r 989d2f495d90 serviceproviders/sapi_calendar/calendarservice/inc/calendarnotify.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/serviceproviders/sapi_calendar/calendarservice/inc/calendarnotify.h	Fri Jul 03 15:51:24 2009 +0100
@@ -0,0 +1,131 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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 __CALENDARNOTIFY_H
+#define __CALENDARNOTIFY_H
+
+class MCalCallbackBase;
+class CAsyncRequestObserver;
+
+/**
+ *This class implements CalendarNotify SAPI core logic.It includes  
+ * methods for notification of changes in calendar.
+ * 
+ */
+class CCalendarObserver : public CCalendarASyncRequest, /*public CActive, */public MCalChangeCallBack2
+	{
+	public:
+	
+		/**
+		 * Two-phased constructor.
+		 * @param CCalendarSessionInfo* a calendar session information.
+		 * @param aFilter* Filter object. 
+		 * @param aAsyncRequestObserver Asynchronous request observer
+	     * @param aNotifyCallback Callback Object for Change notification. 
+		*/
+		static CCalendarObserver* NewL( CCalendarSessionInfo* aSessionInfo, 
+											CCalendarFilter* aFilter, 
+											CAsyncRequestObserver* aAsyncRequestObserver,
+											MCalCallbackBase* aNotifyCallback );
+		
+		/**
+		* Start the notification process
+		*/
+		void StartChangeNotificationL();
+		
+		/**
+	     * Destructor.
+    	*/
+		virtual ~CCalendarObserver();
+
+		/**
+		 * Inherited from MCalChangeCallBack2 class 
+		*/ 
+		virtual void CalChangeNotification(RArray< TCalChangeEntry > &aChangeItems);		
+	
+		virtual TBool IsInProgress();
+	
+	private:
+
+		/** 
+	     * Default  constructor.
+	     * @param aSessionInfo  It is an object of CCalSession Class which
+	     *        represents a channel of communication between a client thread  
+	     *        and the calendar Server thread .
+	     * @param aNotifyCallback It is a callback notification
+	    */
+		CCalendarObserver( CCalendarSessionInfo* aSessionInfo, 
+									CAsyncRequestObserver* aAsyncRequestObserver, 
+									MCalCallbackBase* aNotifyCallback );
+
+		void ConstructL( CCalendarFilter* aFilter );
+		
+		/**
+		 * Inherited from CActive class 
+		*/ 
+    	virtual void DoCancel();
+
+		/**
+		 * Inherited from CActive class 
+		*/ 
+        virtual void RunL();
+
+		/**
+		 * Activates the request and call SetActive() function
+		*/ 
+		void ActivateRequest(TInt aReason);
+
+		/**
+		 * Gives the result for notification request.
+		*/ 
+		void NotifyRequestResult(TInt aReason);
+	
+	private:
+
+		/**
+		 * Calendar server session
+		*/ 
+		CCalendarSessionInfo* iSessionInfo;
+
+		/**
+		 * Calendar server session for notifications
+		*/ 
+		CCalSession* 			iSession;
+
+		/**
+		 * Callback Object
+		*/ 
+		MCalCallbackBase* iNotifyCallback;
+
+		/**
+		 * Filter Object
+		*/ 
+		CCalendarFilter* iFilter;
+
+		/**
+		 * Asynchronous request observer, Used to get infromed of completion or request
+		*/ 
+		CAsyncRequestObserver* 	iAsyncRequestObserver;
+		
+		TBool			iIsInProgress;
+
+	};
+
+
+
+#endif __CALENDARNOTIFY_H
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