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

import java.awt.Dimension;
import java.awt.Robot;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.SwingUtilities;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import java.util.Date;

public class bug4865918 {

    private static JFrame frame;
    private static TestScrollBar sbar;
    private static final CountDownLatch mousePressLatch = new CountDownLatch(1);

    public static void main(String[] argv) throws Exception {
        try {
            Robot robot = new Robot();
            SwingUtilities.invokeAndWait(() -> createAndShowGUI());

            robot.waitForIdle();
            robot.delay(1000);

            SwingUtilities.invokeAndWait(() -> sbar.pressMouse());
            if (!mousePressLatch.await(2, TimeUnit.SECONDS)) {
                throw new RuntimeException("Timed out waiting for mouse press");
            }

            if (getValue() != 9) {
                throw new RuntimeException("The scrollbar block increment " +
                                            getValue() + " is incorrect");
            }
        } finally {
            SwingUtilities.invokeAndWait(() -> {
                if (frame != null) {
                    frame.dispose();
                }
            });
        }
    }

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

        SwingUtilities.invokeAndWait(() -> {
            result[0] = sbar.getValue();
        });

        System.out.println("value " + result[0]);
        return result[0];
    }

    private static void createAndShowGUI() {
        frame = new JFrame("bug4865918");
        sbar = new TestScrollBar(JScrollBar.HORIZONTAL, -1, 10, -100, 100);
        sbar.setPreferredSize(new Dimension(200, 20));
        sbar.setBlockIncrement(10);
        sbar.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                mousePressLatch.countDown();
            }
        });
        frame.getContentPane().add(sbar);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
        frame.toFront();
    }

    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_DOWN_MASK,
                    3 * getWidth() / 4, getHeight() / 2,
                    1, true);
            processMouseEvent(me);
        }
    }
}