diff -r 000000000000 -r f72a12da539e menufw/hierarchynavigator/hnengine/inc/hneventgenerator.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menufw/hierarchynavigator/hnengine/inc/hneventgenerator.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,55 @@
+/*
+* 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 HNEVENTGENERATOR_H_
+#define HNEVENTGENERATOR_H_
+
+#include <e32def.h>
+
+class CLiwGenericParamList;
+/**
+ * @ingroup group_hnengine
+ * Hierarchy navigator event generator.
+ * 
+ * This class is an interface for event triggering in hierarchy navigator.
+ * Events being triggered may be e.g. SuiteLoaded, ItemFocus, etc.
+ * It also mediates in events being passed from the UI. 
+ *
+ * @lib hnengine
+ * @since S60 5.0 
+ */
+class MHnEventGenerator
+    {
+    public:
+  
+    /**
+    * Method is invoked whenever any component wants to trigger an event 
+    * inside hierarchy navigator.
+    * 
+    * @since S60 5.0
+    * @param aHnEventId Event type id to trigger.
+    * @param aRecipientId The id of the recipient item which the event concerns.
+    * @param aEventParameters Event specific parameters used to perform action.
+    * @return Status code.
+    */
+    virtual TInt TriggerHnEventL( const TInt aHnEventId, const TInt aRecipientId,
+            CLiwGenericParamList* aEventParameters = NULL ) = 0;
+    };
+
+
+#endif // HNEVENTGENERATOR_H_