diff -r 000000000000 -r 522a326673b6 sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/FileTester.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/FileTester.java	Thu Mar 11 19:08:43 2010 +0200
@@ -0,0 +1,59 @@
+// 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:
+//
+
+
+
+package com.symbian.smt.gui;
+
+import org.eclipse.core.expressions.PropertyTester;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.runtime.CoreException;
+
+import com.symbian.smt.gui.nature.Nature;
+
+/**
+ * @author barbararosi-schwartz
+ *
+ */
+public class FileTester extends PropertyTester {
+
+	/**
+	 * 
+	 */
+	public FileTester() {
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.core.expressions.IPropertyTester#test(java.lang.Object, java.lang.String, java.lang.Object[], java.lang.Object)
+	 */
+	public boolean test(Object element, String property, Object[] args, Object expectedValue) {
+		IFile file = (IFile) element;
+		
+		if (property.equals("belongsToSMMProject")) {
+			try {
+				boolean belongsToSMMProject = file.getProject().hasNature(Nature.ID);
+				return expectedValue == null ?  belongsToSMMProject : (belongsToSMMProject == ((Boolean) expectedValue).booleanValue());
+			}
+			catch (CoreException e) {
+				Logger.log(e.getMessage(), e);
+				return false;
+			}
+			
+		}
+		
+		return false;
+	}
+
+}