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