bug4865918.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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).
 *
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 * 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 4865918
 * @summary REGRESSION:JCK1.4a-runtime api/javax_swing/interactive/JScrollBarTests.html#JScrollBar
 * @author Andrey Pikalev
 * @run main bug4865918
 */

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

public class bug4865918 {

    private static TestScrollBar sbar;

    public static void main(String[] argv) throws Exception {

        Robot robot = new Robot();
        SwingUtilities.invokeAndWait(new Runnable() {

            public void run() {
                createAndShowGUI();
            }
        });

        robot.waitForIdle();

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                sbar.pressMouse();
            }
        });

        robot.waitForIdle();

        int value = getValue();

        if (value != 9) {
            throw new Error("The scrollbar block increment is incorect");
        }
    }

    private static int getValue() throws Exception {
        final int[] result = new int[1];

        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                result[0] = sbar.getValue();
            }
        });

        return result[0];
    }

    private static void createAndShowGUI() {
        JFrame frame = new JFrame("bug4865918");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        sbar = new TestScrollBar(JScrollBar.HORIZONTAL, -1, 10, -100, 100);
        sbar.setPreferredSize(new Dimension(200, 20));
        sbar.setBlockIncrement(10);

        frame.getContentPane().add(sbar);
        frame.pack();
        frame.setVisible(true);

    }

    static class TestScrollBar extends JScrollBar {

        public TestScrollBar(int orientation, int value, int extent,
                int min, int max) {
            super(orientation, value, extent, min, max);

        }

        public void pressMouse() {
            MouseEvent me = new MouseEvent(sbar,
                    MouseEvent.MOUSE_PRESSED,
                    (new Date()).getTime(),
                    MouseEvent.BUTTON1_MASK,
                    3 * getWidth() / 4, getHeight() / 2,
                    1, true);
            processMouseEvent(me);
        }
    }
}