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Satyen Subramaniam
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8353592: Open source several scrollbar tests
Backport-of: 5280b7b031bb3dc44fb923c3be7ae04ec22fd364
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‎test/jdk/java/awt/Scrollbar/ListScrollbarTest.java‎

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/*
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* Copyright (c) 1998, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4029465
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* @summary Win95 Multiselect List doesn't display scrollbar
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* @key headful
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* @run main ListScrollbarTest
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*/
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.List;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.Robot;
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public class ListScrollbarTest {
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private static final Color BG_COLOR = Color.RED;
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private static Robot robot;
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private static Frame frame;
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private static List list;
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private static int counter = 0;
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private static volatile Rectangle listBounds;
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public static void main(String[] args) throws Exception {
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try {
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EventQueue.invokeAndWait(ListScrollbarTest::createAndShowUI);
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test();
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} finally {
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EventQueue.invokeAndWait(() -> {
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if (frame != null) {
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frame.dispose();
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}
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});
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}
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}
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private static void test() throws Exception {
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robot = new Robot();
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robot.waitForIdle();
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robot.delay(500);
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EventQueue.invokeAndWait(() -> {
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Point locationOnScreen = list.getLocationOnScreen();
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Dimension size = list.getSize();
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listBounds = new Rectangle(locationOnScreen, size);
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});
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Point point = new Point(listBounds.x + listBounds.width - 5,
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listBounds.y + listBounds.height / 2);
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for (int i = 0; i < 4; i++) {
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scrollbarCheck(point, false);
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addListItem();
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}
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scrollbarCheck(point, true);
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}
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public static boolean areColorsSimilar(Color c1, Color c2, int tolerance) {
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return Math.abs(c1.getRed() - c2.getRed()) <= tolerance
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&& Math.abs(c1.getGreen() - c2.getGreen()) <= tolerance
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&& Math.abs(c1.getBlue() - c2.getBlue()) <= tolerance;
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}
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private static void scrollbarCheck(Point point, boolean isScrollbarExpected) {
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Color pixelColor = robot.getPixelColor(point.x, point.y);
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boolean areColorsSimilar = areColorsSimilar(BG_COLOR, pixelColor, 5);
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if (isScrollbarExpected && areColorsSimilar) {
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throw new RuntimeException(("""
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Scrollbar is expected, but pixel color \
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is similar to the background color
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%s pixel color
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%s bg color""")
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.formatted(pixelColor, BG_COLOR));
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}
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if (!isScrollbarExpected && !areColorsSimilar) {
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throw new RuntimeException(("""
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Scrollbar is not expected, but pixel color \
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is not similar to the background color
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%s pixel color
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%s bg color""")
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.formatted(pixelColor, BG_COLOR));
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}
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}
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private static void addListItem() throws Exception {
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EventQueue.invokeAndWait(() -> {
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counter++;
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System.out.println("Adding list item " + counter);
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list.add("List Item " + counter);
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frame.validate();
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});
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robot.waitForIdle();
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robot.delay(150);
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}
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private static void createAndShowUI() {
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frame = new Frame("ListScrollbarTest");
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list = new List(3, true);
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list.setBackground(BG_COLOR);
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// do not draw border around items, it can affect screen capture
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list.setFocusable(false);
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frame.add(list);
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frame.pack();
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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}
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}

‎test/jdk/java/awt/Scrollbar/ScrollbarCtrlClickTest.java‎

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/*
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* Copyright (c) 2002, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4075950
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* @summary Test for functionality of Control Click on Scrollbar
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* @key headful
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* @run main ScrollbarCtrlClickTest
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*/
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import java.awt.BorderLayout;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.Robot;
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import java.awt.Scrollbar;
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import java.awt.TextArea;
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import java.awt.event.KeyEvent;
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import java.awt.event.MouseEvent;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.TimeUnit;
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public class ScrollbarCtrlClickTest {
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private static Frame frame;
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private static TextArea ta;
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private static Scrollbar scrollbar;
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private static final CountDownLatch latch = new CountDownLatch(1);
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private static volatile Rectangle sbBounds;
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public static void main(String[] args) throws Exception {
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try {
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EventQueue.invokeAndWait(ScrollbarCtrlClickTest::initAndShowGUI);
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test();
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} finally {
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EventQueue.invokeAndWait(() -> {
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if (frame != null) {
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frame.dispose();
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}
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});
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}
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}
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private static void initAndShowGUI() {
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frame = new Frame("ScrollbarDimensionTest");
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ta = new TextArea("", 30, 100);
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scrollbar = new Scrollbar(Scrollbar.VERTICAL,
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0, 10, 0, 20);
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// Just setting layout so scrollbar thumb will be big enough to use
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frame.setLayout(new BorderLayout());
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frame.add("East", scrollbar);
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frame.add("West", ta);
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scrollbar.addAdjustmentListener(e -> {
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System.out.println(e.paramString());
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ta.append(e.paramString() + "\n");
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latch.countDown();
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});
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frame.pack();
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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}
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private static void test() throws Exception {
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Robot robot = new Robot();
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robot.waitForIdle();
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robot.setAutoDelay(25);
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robot.delay(500);
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EventQueue.invokeAndWait(() -> {
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Point locationOnScreen = scrollbar.getLocationOnScreen();
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Dimension size = scrollbar.getSize();
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sbBounds = new Rectangle(locationOnScreen, size);
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});
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robot.mouseMove(sbBounds.x + sbBounds.width / 2,
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sbBounds.y + sbBounds.height - 50);
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robot.keyPress(KeyEvent.VK_CONTROL);
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robot.mousePress(MouseEvent.BUTTON1_DOWN_MASK);
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robot.mouseRelease(MouseEvent.BUTTON1_DOWN_MASK);
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robot.keyRelease(KeyEvent.VK_CONTROL);
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if (!latch.await(1, TimeUnit.SECONDS)) {
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throw new RuntimeException("Timed out waiting for latch");
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}
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}
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}

‎test/jdk/java/awt/Scrollbar/UnitIncrementTest.java‎

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/*
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* Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4169461
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* @summary Test for Motif Scrollbar unit increment
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* @key headful
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* @run main UnitIncrementTest
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*/
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import javax.swing.UIManager;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.Robot;
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import java.awt.Scrollbar;
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import java.awt.event.AdjustmentEvent;
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import java.awt.event.MouseEvent;
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import java.util.ArrayList;
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public class UnitIncrementTest {
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private static Frame frame;
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private static Scrollbar scrollbar;
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private static final java.util.List<AdjustmentEvent> eventsList = new ArrayList<>();
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private static final int UNIT_INCREMENT_VALUE = 5;
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private static final int INCREMENTS_COUNT = 10;
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private static volatile Rectangle scrollbarBounds;
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public static void main(String[] args) throws Exception {
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UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
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try {
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EventQueue.invokeAndWait(UnitIncrementTest::createAndShowUI);
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test();
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} finally {
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EventQueue.invokeAndWait(() -> {
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if (frame != null) {
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frame.dispose();
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}
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});
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}
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}
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private static void createAndShowUI() {
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frame = new Frame("UnitIncrementTest");
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scrollbar = new Scrollbar(Scrollbar.HORIZONTAL);
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scrollbar.setUnitIncrement(UNIT_INCREMENT_VALUE);
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scrollbar.setBlockIncrement(20);
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scrollbar.addAdjustmentListener(e -> {
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eventsList.add(e);
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System.out.println(e);
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});
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frame.add(scrollbar);
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frame.setSize(300, 100);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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}
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private static void test() throws Exception {
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Robot robot = new Robot();
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robot.waitForIdle();
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robot.setAutoDelay(25);
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robot.delay(500);
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EventQueue.invokeAndWait(() -> {
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Point locationOnScreen = scrollbar.getLocationOnScreen();
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Dimension size = scrollbar.getSize();
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scrollbarBounds = new Rectangle(locationOnScreen, size);
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});
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robot.mouseMove(scrollbarBounds.x + scrollbarBounds.width - 10,
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scrollbarBounds.y + scrollbarBounds.height / 2);
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for (int i = 0; i < INCREMENTS_COUNT; i++) {
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robot.mousePress(MouseEvent.BUTTON1_DOWN_MASK);
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robot.mouseRelease(MouseEvent.BUTTON1_DOWN_MASK);
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robot.delay(150);
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}
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robot.waitForIdle();
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robot.delay(250);
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if (eventsList.size() != INCREMENTS_COUNT) {
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throw new RuntimeException("Wrong number of events: " + eventsList.size());
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}
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int oldValue = 0;
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for (AdjustmentEvent event : eventsList) {
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System.out.println("\nChecking event " + event);
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int diff = event.getValue() - oldValue;
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System.out.printf("diff: %d - %d = %d\n", event.getValue(), oldValue, diff);
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if (diff != UNIT_INCREMENT_VALUE) {
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throw new RuntimeException("Unexpected adjustment value: %d".formatted(diff));
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}
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oldValue = event.getValue();
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}
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}
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}

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