test/jdk/javax/swing/JFileChooser/DeserializedJFileChooser/DeserializedJFileChooserTest.java

/*
 * Copyright (c) 2016, 2020, 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.
 *
 * 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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 * questions.
 */

/**
 * @test
 * @key headful
 * @bug 8146301
 * @summary Enter key does not work in a deserialized JFileChooser.
 * @run main DeserializedJFileChooserTest
 */

import java.awt.EventQueue;
import java.awt.Robot;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

import static javax.swing.UIManager.getInstalledLookAndFeels;

public class DeserializedJFileChooserTest {

    private static volatile JButton defaultSet;
    private static JFileChooser deserialized;

    public static void main(String[] args) throws Exception {
        for (UIManager.LookAndFeelInfo laf : getInstalledLookAndFeels()) {
            EventQueue.invokeAndWait(() -> setLookAndFeel(laf));
            SwingUtilities.invokeLater( () -> {
                try {
                    JFileChooser jfc = new JFileChooser();
                    ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    ObjectOutputStream oos = new ObjectOutputStream(bos);
                    oos.writeObject(jfc);
                    oos.close();
                    ByteArrayInputStream bis =
                            new ByteArrayInputStream(bos.toByteArray());
                    ObjectInputStream ois = new ObjectInputStream(bis);
                    deserialized = (JFileChooser) ois.readObject();
                    deserialized.showOpenDialog(null);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            });
            Robot robot = new Robot();
            robot.waitForIdle();
            EventQueue.invokeAndWait(()->{
                defaultSet = deserialized.getRootPane().getDefaultButton();
                // Trick to close the modal dialog
                deserialized.setVisible(false);
                Thread.currentThread().interrupt();
            });
            robot.waitForIdle();
            if (defaultSet == null) {
                throw new RuntimeException("default button is null");
            }
        }
    }

    private static void setLookAndFeel(UIManager.LookAndFeelInfo laf) {
        try {
            System.out.println("laf = " + laf);
            UIManager.setLookAndFeel(laf.getClassName());
        } catch (UnsupportedLookAndFeelException ignored) {
            System.out.println("Unsupported LookAndFeel: " + laf.getClassName());
        } catch (ClassNotFoundException | InstantiationException |
                IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }
}