| /* |
| * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.java.accessibility.util; |
| |
| import java.awt.*; |
| import java.util.EventListener; |
| import javax.accessibility.*; |
| |
| |
| /** |
| * The TopLevelWindowMulticaster class is used to maintain a list of |
| * TopLevelWindowListener classes. It is intended to be used primarily |
| * for internal support in the EventQueueMonitor class, and is not intended |
| * to be used by classes outside the Java Accessibility Utility package. |
| * |
| * @see EventQueueMonitor |
| * @see EventQueueMonitor#addTopLevelWindowListener |
| * @see EventQueueMonitor#removeTopLevelWindowListener |
| * |
| */ |
| @jdk.Exported(false) |
| public class TopLevelWindowMulticaster |
| extends AWTEventMulticaster implements TopLevelWindowListener |
| { |
| protected TopLevelWindowMulticaster(EventListener a, EventListener b) { |
| super(a, b); |
| } |
| |
| public void topLevelWindowCreated(Window w) { |
| ((TopLevelWindowListener)a).topLevelWindowCreated(w); |
| ((TopLevelWindowListener)b).topLevelWindowCreated(w); |
| } |
| |
| public void topLevelWindowDestroyed(Window w) { |
| ((TopLevelWindowListener)a).topLevelWindowDestroyed(w); |
| ((TopLevelWindowListener)b).topLevelWindowDestroyed(w); |
| } |
| |
| public static TopLevelWindowListener add(TopLevelWindowListener a, TopLevelWindowListener b) { |
| return (TopLevelWindowListener)addInternal(a, b); |
| } |
| |
| public static TopLevelWindowListener remove(TopLevelWindowListener l, TopLevelWindowListener oldl) { |
| return (TopLevelWindowListener)removeInternal(l, oldl); |
| } |
| |
| protected static EventListener addInternal(EventListener a, EventListener b) { |
| if (a == null) return b; |
| if (b == null) return a; |
| return new TopLevelWindowMulticaster(a, b); |
| } |
| |
| protected static EventListener removeInternal(EventListener l, EventListener oldl) { |
| if (l == oldl || l == null) { |
| return null; |
| } else if (l instanceof TopLevelWindowMulticaster) { |
| return ((TopLevelWindowMulticaster)l).remove(oldl); |
| } else { |
| return l; // it's not here |
| } |
| } |
| |
| } |