1 /* 2 * The contents of this file are subject to the terms of the Common Development 3 * and Distribution License (the License). You may not use this file except in 4 * compliance with the License. 5 * 6 * You can obtain a copy of the License at http://www.netbeans.org/cddl.html 7 * or http://www.netbeans.org/cddl.txt. 8 * 9 * When distributing Covered Code, include this CDDL Header Notice in each file 10 * and include the License file at http://www.netbeans.org/cddl.txt. 11 * If applicable, add the following below the CDDL Header, with the fields 12 * enclosed by brackets [] replaced by your own identifying information: 13 * "Portions Copyrighted [year] [name of copyright owner]" 14 * 15 * The Original Software is NetBeans. The Initial Developer of the Original 16 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun 17 * Microsystems, Inc. All Rights Reserved. 18 */ 19 package org.openide.util; 20 21 import java.util.*; 22 23 24 /** General listener for changes in lookup. 25 * 26 * @author Jaroslav Tulach 27 */ 28 public interface LookupListener extends EventListener { 29 /** A change in lookup occured. Please note that this method 30 * should never block since it might be called from lookup implementation 31 * internal threads. If you block here you are in risk that the thread 32 * you wait for might in turn to wait for the lookup internal thread to 33 * finish its work. 34 * @param ev event describing the change 35 */ 36 public void resultChanged(LookupEvent ev); 37 } 38