--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/smtwidgets/ValidModelObservable.java	Thu Mar 11 19:08:43 2010 +0200
@@ -0,0 +1,40 @@
+// Copyright (c) 2008-2009 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:
+// ${file_name}
+// 
+//
+
+package com.symbian.smt.gui.smtwidgets;
+
+public interface ValidModelObservable {
+
+	/**
+	 * Registers the provided listener as an interested party in
+	 * ValidModelEvents.
+	 * 
+	 * @param listener
+	 *            the ValidModelDefinedListener object to be registered with
+	 *            this class.
+	 */
+	void addModelListener(ValidModelDefinedListener listener);
+
+	/**
+	 * Removes the provided listener from the list of registered listeners of
+	 * ValidModelEvents.
+	 * 
+	 * @param listener
+	 *            the ValidModelDefinedListener object to be unregistered.
+	 */
+	void removeModelListener(ValidModelDefinedListener listener);
+}