106 lines
3.5 KiB
Java
106 lines
3.5 KiB
Java
/*
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* Copyright (c) 2003, 2023, 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.
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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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/*
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@test
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@bug 4924516
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@summary Verifies that SHOWING_CHANGED event is propagated to \
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HierarchyListeners then toolkit enabled
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@key headful
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*/
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import java.awt.AWTEvent;
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import java.awt.EventQueue;
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import java.awt.Toolkit;
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import java.awt.event.AWTEventListener;
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import java.awt.event.HierarchyEvent;
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import java.awt.event.HierarchyListener;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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public class ShowingChangedEventTest
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implements AWTEventListener, HierarchyListener{
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private boolean eventRegisteredOnButton = false;
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private final JFrame frame = new JFrame("ShowingChangedEventTest");
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private final JPanel panel = new JPanel();
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private final JButton button = new JButton();
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public static void main(String[] args) throws Exception {
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EventQueue.invokeAndWait(() -> {
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ShowingChangedEventTest showingChangedEventTest
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= new ShowingChangedEventTest();
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try {
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showingChangedEventTest.start();
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} finally {
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showingChangedEventTest.frame.dispose();
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}
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});
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}
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public void start () {
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frame.getContentPane().add(panel);
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panel.add(button);
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frame.pack();
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frame.setVisible(true);
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Toolkit.getDefaultToolkit()
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.addAWTEventListener(this, AWTEvent.HIERARCHY_EVENT_MASK);
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button.addHierarchyListener(this);
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panel.setVisible(false);
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if (!eventRegisteredOnButton){
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throw new RuntimeException("Event wasn't registered on Button.");
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}
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}
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@Override
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public void eventDispatched(AWTEvent awtevt) {
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if (awtevt instanceof HierarchyEvent) {
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HierarchyEvent hevt = (HierarchyEvent) awtevt;
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if (hevt != null && (hevt.getChangeFlags()
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& HierarchyEvent.SHOWING_CHANGED) != 0) {
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System.out.println("Hierarchy event was received on Toolkit. "
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+ "SHOWING_CHANGED for "
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+ hevt.getChanged().getClass().getName());
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}
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}
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}
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@Override
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public void hierarchyChanged(HierarchyEvent e) {
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if ((HierarchyEvent.SHOWING_CHANGED & e.getChangeFlags()) != 0) {
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System.out.println("Hierarchy event was received on Button. "
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+ "SHOWING_CHANGED for "
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+ e.getChanged().getClass().getName());
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}
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eventRegisteredOnButton = true;
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}
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}
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