test/javax/swing/JSlider/6278700/bug6278700.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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 * questions.
 */

/* @test
 * @bug 6278700
 * @summary JSlider created with BoundedRangeModel fires twice when changed
 * @author Pavel Porvatov
   @run main bug6278700
 */

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class bug6278700 {
    private int changeCount;

    private final ChangeListener listener = new ChangeListener() {
        public void stateChanged(ChangeEvent e) {
            changeCount++;
        }
    };

    public static void main(String[] args) {
        new bug6278700();
    }

    public bug6278700() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JSlider slider = new JSlider(new DefaultBoundedRangeModel(5, 0, 0, 10));

                slider.addChangeListener(listener);
                slider.setValue(0);

                if (changeCount != 1) {
                    throw new RuntimeException("Incorrect stateChanged count: " + Integer.toString(changeCount));
                }

                changeCount = 0;

                slider = new JSlider();

                slider.addChangeListener(listener);
                slider.setValue(0);

                if (changeCount != 1) {
                    throw new RuntimeException("Incorrect stateChanged count: " + Integer.toString(changeCount));
                }
            }
        });
    }
}