diff -r 000000000000 -r f979ecb2b13e calendarui/organizerplugin/aiagendapluginengine/inc/PluginDataChangeObserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/calendarui/organizerplugin/aiagendapluginengine/inc/PluginDataChangeObserver.h	Tue Feb 02 10:12:19 2010 +0200
@@ -0,0 +1,46 @@
+/*
+* Copyright (c) 2002 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:  Interface class to notify data changes to the plugin.
+ *
+*/
+
+
+#ifndef MPLUGINDATACHANGEOBSERVER_H
+#define MPLUGINDATACHANGEOBSERVER_H
+
+// FORWARD DECLARATIONS
+class CCalInstance;
+
+// CLASS DECLARATION
+
+NONSHARABLE_CLASS( MPluginDataChangeObserver )
+{
+ public:
+    /**
+     * Implement this function to get notifications from AIAgendaPluginEngine.
+     * Engine will call this function whenever plugin's data should be updated.
+     * @since Series 60 2.6
+     * @param aEntryArray  Reference to an array of agenda entries.
+     *                     Owned by the engine.  Data is valid only inside this function.
+     * @param aHadEvents   Tells if calendar has any expired events for today. 
+     *                     Only valid for observer type: ECalendarObserver.
+     **/
+    virtual void PluginDataChanged(const RPointerArray<CCalInstance>& aEntryArray, TBool aHadEvents) = 0;
+
+};
+
+#endif  // MPLUGINDATACHANGEOBSERVER_H
+
+
+// End of File