108 lines
3.6 KiB
Java
108 lines
3.6 KiB
Java
/*
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* Copyright (c) 2018, 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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import java.awt.BorderLayout;
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import java.awt.Color;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.Point;
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import java.awt.Robot;
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import java.awt.event.InputEvent;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.TimeUnit;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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/**
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* @test
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* @key headful
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* @bug 8202768
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* @summary we should not hang when lots of panels are used
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*/
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public final class SlowPanelIteration {
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private static JFrame frame;
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private static Point center = new Point();
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private static volatile CountDownLatch go;
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public static void main(final String[] args) throws Exception {
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Robot r = new Robot();
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// accessibility tool will need time to react to our clicks
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r.setAutoDelay(200);
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try {
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EventQueue.invokeAndWait(SlowPanelIteration::showUI);
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for (int i = 0; i < 10; ++i) {
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go = new CountDownLatch(1);
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r.mouseMove(center.x, center.y);
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r.mousePress(InputEvent.BUTTON1_DOWN_MASK);
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r.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
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if (!go.await(10, TimeUnit.SECONDS)) {
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throw new RuntimeException("Too slow operation");
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}
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}
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} finally {
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EventQueue.invokeAndWait(SlowPanelIteration::dispose);
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}
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}
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private static void showUI() {
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frame = new JFrame();
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frame.setSize(new Dimension(400, 400));
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frame.setLocationRelativeTo(null);
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final Container content = frame.getContentPane();
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content.setLayout(new BorderLayout(0, 0));
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Container lastPanel = content;
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for (int i = 0; i < 500; i++) {
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final JPanel p = new JPanel();
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p.setLayout(new BorderLayout(0, 0));
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lastPanel.add(p);
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lastPanel.addMouseListener(new MouseAdapter() {
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@Override
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public void mouseClicked(MouseEvent e) {
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System.out.println("click");
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go.countDown();
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}
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});
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lastPanel = p;
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}
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lastPanel.setBackground(Color.GREEN);
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frame.setVisible(true);
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Point loc = frame.getLocationOnScreen();
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center.x = loc.x + frame.getWidth() / 2;
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center.y = loc.y + frame.getHeight() / 2;
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}
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private static void dispose() {
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if (frame != null) {
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frame.dispose();
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}
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}
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}
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