AlwaysOnTopImeTest.java

/*
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 * 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.
 *
 * 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.
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/**
 * @test
 * @bug 8179665
 * @summary [Windows] java.awt.IllegalComponentStateException: component must
 *          be showing on the screen to determine its location
 * @run main AlwaysOnTopImeTest
 */

import javax.swing.*;
import java.awt.*;

public class AlwaysOnTopImeTest {

    private static JDialog d;
    private static JFrame f;

    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeLater(() -> {
            f = new JFrame();
            f.setVisible(true);
            d = new JDialog(f);
            d.add(new JTextField());
            d.pack();
            d.setModal(true);
            f.setAlwaysOnTop(true);
            d.setVisible(true);
            f.setAlwaysOnTop(false);
        });
        Robot robot = new Robot();
        robot.waitForIdle();
        robot.delay(200);
        SwingUtilities.invokeAndWait(() -> d.setVisible(false));
        robot.waitForIdle();
        robot.delay(200);
        SwingUtilities.invokeLater(f::dispose);
    }
}