1 /* 2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @key headful 27 * @bug 4743225 28 * @summary Size of JComboBox list is wrong when list is populated via PopupMenuListener 29 * @author Alexander Potochkin 30 */ 31 32 import javax.accessibility.AccessibleContext; 33 import javax.swing.JComboBox; 34 import javax.swing.JFrame; 35 import javax.swing.SwingUtilities; 36 import javax.swing.event.PopupMenuEvent; 37 import javax.swing.event.PopupMenuListener; 38 import javax.swing.plaf.basic.BasicComboPopup; 39 import java.awt.FlowLayout; 40 import java.awt.Point; 41 import java.awt.Robot; 42 import java.awt.event.InputEvent; 43 44 public class bug4743225 extends JFrame { 45 46 private static JComboBox cb; 47 private static volatile boolean flag; 48 49 public bug4743225() { 50 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 51 setLayout(new FlowLayout()); 52 cb = new JComboBox(new Object[] {"one", "two", "three"}); 53 cb.addPopupMenuListener(new PopupMenuListener() { 54 public void popupMenuWillBecomeVisible(PopupMenuEvent e) { 55 cb.addItem("Test"); 56 } 57 58 public void popupMenuWillBecomeInvisible(PopupMenuEvent e) { 59 } 60 61 public void popupMenuCanceled(PopupMenuEvent e) { 62 } 63 }); 64 add(cb); 65 pack(); 66 } 67 68 public static BasicComboPopup getPopup() { 69 AccessibleContext c = cb.getAccessibleContext(); 70 for(int i = 0; i < c.getAccessibleChildrenCount(); i ++) { 71 if (c.getAccessibleChild(i) instanceof BasicComboPopup) { 72 return (BasicComboPopup) c.getAccessibleChild(i); 73 } 74 } 75 throw new AssertionError("No BasicComboPopup found"); 76 } 77 78 public static void main(String... args) throws Exception { 79 80 Robot robot = new Robot(); 81 robot.setAutoDelay(20); 82 83 SwingUtilities.invokeAndWait(new Runnable() { 84 public void run() { 85 new bug4743225().setVisible(true); 86 } 87 }); 88 robot.waitForIdle(); 89 90 // calling this method from main thread is ok 91 Point point = cb.getLocationOnScreen(); 92 robot.mouseMove(point.x + 10, point.y + 10); 93 robot.mousePress(InputEvent.BUTTON1_MASK); 94 robot.mouseRelease(InputEvent.BUTTON1_MASK); 95 robot.waitForIdle(); 96 97 SwingUtilities.invokeAndWait(new Runnable() { 98 public void run() { 99 if(getPopup().getList().getLastVisibleIndex() == 3) { 100 flag = true; 101 } 102 } 103 }); 104 105 if (!flag) { 106 throw new RuntimeException("The ComboBox popup wasn't correctly updated"); 107 } 108 } 109 }