/* * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved. * 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. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ import javax.swing.JScrollBar; import javax.swing.SwingUtilities; import java.awt.Dimension; import java.awt.event.MouseEvent; import java.util.Date; /* * @test * @bug 4842792 * @summary JScrollBar behaves incorrectly if "Block increment" value is big enough * @run main bug4842792 */ public class bug4842792 { public static TestScrollBar scrollBar; public static void main(String[] args) throws Exception { SwingUtilities.invokeAndWait(() -> { scrollBar = new TestScrollBar(JScrollBar.HORIZONTAL, 10, 10, 0, 100); scrollBar.setPreferredSize(new Dimension(200, 20)); scrollBar.setBlockIncrement(Integer.MAX_VALUE); if (scrollBar.doTest() == 0) { throw new RuntimeException("The scrollbar new value should not be 0"); } }); System.out.println("Test Passed!"); } static class TestScrollBar extends JScrollBar { public TestScrollBar(int orientation, int value, int extent, int min, int max) { super(orientation, value, extent, min, max); } public int doTest() { MouseEvent mouseEvent = new MouseEvent(scrollBar, MouseEvent.MOUSE_PRESSED, (new Date()).getTime(), MouseEvent.BUTTON1_DOWN_MASK, 150, 10, 1, true); processMouseEvent(mouseEvent); return scrollBar.getValue(); } } }