/*
 * Copyright (c) 2009, 2017, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
/*
 * @test
 * @bug 8178430
 * @summary JMenu in GridBagLayout flickers when label text shows "..." and
 * is updated
 * @run main LabelDotTest
 */
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.util.stream.IntStream;

import javax.swing.SwingUtilities;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.SwingConstants;

public class LabelDotTest
{
    private final static String longText = "show a very long text to have it " +
            "automatically shortened";
    private final static String shortText = "show short text";

    public LabelDotTest(int seconds) {
        System.out.println("BEFORE CREATION");
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(new Dimension(50, 150));
        frame.setLocationRelativeTo(null);

        frame.setLayout(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.BOTH;
        c.weightx = 1.0;
        c.weighty = 0.0;
        c.gridwidth = GridBagConstraints.REMAINDER;

        JMenuBar menuBar = new JMenuBar();
        JMenu menu = new JMenu("Menu");
        menuBar.add(menu);
        frame.add(menuBar, c);

        frame.add(new JLabel("Title", SwingConstants.CENTER), c);

        c.weighty = 1.0;
        frame.add(new JPanel(new GridBagLayout()), c);
        c.weighty = 0.0;

        JLabel label = new JLabel(shortText);
        frame.add(label, c);

        frame.setVisible(true);

        IntStream.range(0, seconds).forEach((i) -> {
            SwingUtilities.invokeLater(() -> {
                if ( label.getText().equals(shortText) ) {
                    label.setText(longText);
                } else {
                    label.setText(shortText);
                }
            /*
                For a top level menu item, minimum size and the preferred
                size should be the same, and should not be equal to 1
             */
                if (menu.getMinimumSize().height == 1 &&
                        !menu.getMinimumSize().equals(menu.getPreferredSize()))
                    throw new RuntimeException("Size of Menu bar is not correct.");
            });

            try {
                Thread.sleep(1000);
            }
            catch( InterruptedException e ) { }
        });

        frame.dispose();
    }

    public static void main(String[] args) throws Exception {
        new LabelDotTest(10);
    }
}