jdk-24/test/jdk/javax/swing/JScrollBar/bug4202954/bug4202954.java

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/*
   @test
   @key headful
   @bug 4202954
   @library /test/lib
   @library ../../regtesthelpers
   @build Util jdk.test.lib.Platform
   @author Michael C. Albers
   @run main bug4202954
 */

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

import jdk.test.lib.Platform;

public class bug4202954 {
    static JScrollPane buttonScrollPane;
    static Robot robot;
    static JFrame testFrame;
    public static void main(String[] args) throws Exception {
        try {
            if (Platform.isOSX()) {
                UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
            }

            SwingUtilities.invokeAndWait(new Runnable() {
                public void run() {
                    createAndShowGUI();
                }
            });
            Point centerOfScrollPane = Util.getCenterPoint(buttonScrollPane);
            JButton rightScrollButton = findJButton(buttonScrollPane.getHorizontalScrollBar(), centerOfScrollPane.x, centerOfScrollPane.y);
            JButton bottomScrollButton = findJButton(buttonScrollPane.getVerticalScrollBar(), centerOfScrollPane.x, centerOfScrollPane.y);

            if (rightScrollButton == null || bottomScrollButton == null) {
                String errMessage = "Test can't be executed: ";
                errMessage = errMessage + (rightScrollButton == null ? "can't find right button for horizontal scroll bar; " : ""
                    + (bottomScrollButton == null ? "can't find bottom scroll button for vertical scroll bar" : ""));
                throw new RuntimeException(errMessage);
            }

            robot = new Robot();
            robot.setAutoDelay(50);

            // test right, left and middle mouse buttons for horizontal scroll bar
            if (!doTest(rightScrollButton, InputEvent.BUTTON1_DOWN_MASK, true)) {
                throw new RuntimeException("Test failed: right arrow button didn't respond on left mouse button.");
            }
            if (!doTest(rightScrollButton, InputEvent.BUTTON2_DOWN_MASK, false)) {
                throw new RuntimeException("Test failed: right arrow button respond on right mouse button.");
            }
            if (!doTest(rightScrollButton, InputEvent.BUTTON3_DOWN_MASK, false)) {
                throw new RuntimeException("Test failed: right arrow button respond on middle mouse button.");
            }

            // test right, left and middle mouse buttons for vertical scroll bar
            if (!doTest(bottomScrollButton, InputEvent.BUTTON1_DOWN_MASK, true)) {
                throw new RuntimeException("Test failed: bottom arrow button didn't respond on left mouse button.");
            }
            if (!doTest(bottomScrollButton, InputEvent.BUTTON2_DOWN_MASK, false)) {
                throw new RuntimeException("Test failed: bottom arrow button respond on right mouse button.");
            }
            if (!doTest(bottomScrollButton, InputEvent.BUTTON3_DOWN_MASK, false)) {
                throw new RuntimeException("Test failed: bottom arrow button respond on middle mouse button.");
            }
        } finally {
                if (testFrame != null) SwingUtilities.invokeAndWait(() -> testFrame.dispose());
        }
    }
    public static void createAndShowGUI() {
        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new GridLayout(5,5, 15,15));
        int buttonCount = 1;
        while (buttonCount <= 25) {
            buttonPanel.add(new JButton("Button #"+buttonCount));
            buttonCount++;
        }
        buttonScrollPane = new JScrollPane();
        buttonScrollPane.setViewportView(buttonPanel);

        testFrame = new JFrame("bug4202954");
        testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        testFrame.setLayout(new BorderLayout());
        testFrame.add(BorderLayout.CENTER, buttonScrollPane);
        testFrame.setSize(450, 100);
        testFrame.setVisible(true);
    }
    public static JButton findJButton(final JScrollBar scrollBar, final int minX, final int minY) throws Exception {
        JButton button = Util.invokeOnEDT(new java.util.concurrent.Callable<JButton>() {
            @Override
            public JButton call() throws Exception {
                int currentXorY = 0;
                JButton scrollButton = null;
                 for (Component c: scrollBar.getComponents()) {
                     if (c instanceof JButton) {
                         Point p = c.getLocationOnScreen();
                         if (scrollBar.getOrientation() == Adjustable.VERTICAL){
                             if (currentXorY <= p.y){
                                 currentXorY = p.y;
                                 scrollButton = (JButton)c;
                             }
                         }else  if (scrollBar.getOrientation() == Adjustable.HORIZONTAL){
                             if (currentXorY <= p.x){
                                 currentXorY = p.x;
                                 scrollButton = (JButton)c;
                             }
                         }
                     }
                 }
                return scrollButton;
            }
        });
        return button;
    }
    public static void clickMouseOnComponent(Component c, int buttons) throws Exception {
        Point p = Util.getCenterPoint(c);
        robot.mouseMove(p.x, p.y);
        robot.mousePress(buttons);
        robot.mouseRelease(buttons);
    }
    public static boolean doTest(JButton scrollButton, int buttons, boolean expectScroll) throws Exception {
        java.util.concurrent.Callable<Integer> horizontalValue = new java.util.concurrent.Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                return buttonScrollPane.getHorizontalScrollBar().getValue();
            }
        };
        java.util.concurrent.Callable<Integer> verticalValue = new java.util.concurrent.Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                return buttonScrollPane.getVerticalScrollBar().getValue();
            }
        };
        Integer oldHValue = Util.invokeOnEDT(horizontalValue);
        robot.waitForIdle();
        Integer oldVValue = Util.invokeOnEDT(verticalValue);
        robot.waitForIdle();

        clickMouseOnComponent(scrollButton, buttons);
        robot.waitForIdle();

        int newHValue = Util.invokeOnEDT(horizontalValue);
        robot.waitForIdle();
        int newVValue = Util.invokeOnEDT(verticalValue);
        robot.waitForIdle();

        return (oldHValue != newHValue || oldVValue != newVValue) == expectScroll;
    }
}