--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menufw/hierarchynavigator/hnengine/inc/hndatachangeobserver.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,44 @@
+/*
+* Copyright (c) 2007-2008 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:  
+*
+*/
+ 
+
+#ifndef C_HNDATACHANGEOBSERVER_H
+#define C_HNDATACHANGEOBSERVER_H
+
+class CHnItemId;
+
+/**
+ * @ingroup group_hnengine
+ * Data change observer interface. It is used to notify the implementing class that something in the database has been changed.
+ *
+ * @lib hnengine
+ * @since S60 v5.0 
+ */
+NONSHARABLE_CLASS(CHnDataChangeObserver) : public CBase
+    {    
+    public:
+
+    /**
+     * DataChangeL is called when sth in database was changed.
+     * @since S60 v5.0
+     * @param aItemIds Array with ItemIds of changed entries.
+     */
+    virtual void DataChangedL( RPointerArray< CHnItemId >& aItemIds ) = 0;
+    };
+
+
+#endif // C_HNDATACHANGEOBSERVER_H