117 lines
4.0 KiB
Java
117 lines
4.0 KiB
Java
/*
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* Copyright (c) 2004, 2023, 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 5029504
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@summary Empty JComboBox drop-down list is unexpectedly high
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@key headful
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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.Point;
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import java.awt.Robot;
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import java.awt.event.KeyEvent;
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import javax.swing.JComboBox;
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import javax.swing.JFrame;
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import javax.swing.SwingUtilities;
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import javax.swing.plaf.basic.BasicComboBoxUI;
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import javax.swing.plaf.basic.BasicComboPopup;
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import javax.swing.event.PopupMenuListener;
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import javax.swing.event.PopupMenuEvent;
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public class bug5029504 {
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static volatile boolean passed = true;
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static volatile JFrame mainFrame;
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static volatile JComboBox comboBox;
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static volatile BasicComboPopup ourPopup = null;
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public static void main(String[] args) throws Exception {
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try {
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SwingUtilities.invokeAndWait(bug5029504::createUI);
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runTest();
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if (!passed) {
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throw new RuntimeException(
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"Popup of empty JComboBox is too high. Test failed.");
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}
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} finally {
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if (mainFrame != null) {
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SwingUtilities.invokeAndWait(mainFrame::dispose);
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}
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}
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}
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static void createUI() {
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mainFrame = new JFrame("Bug4924758");
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comboBox = new JComboBox();
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comboBox.setUI(new MyComboBoxUI());
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comboBox.addPopupMenuListener(new PopupMenuListener() {
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public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}
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public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
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if (ourPopup != null) {
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int comboHeight = comboBox.getHeight();
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int popupHeight = ourPopup.getHeight();
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if (popupHeight > comboHeight*2) {
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passed = false;
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}
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}
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}
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public void popupMenuCanceled(PopupMenuEvent e) {}
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});
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mainFrame.setLayout(new BorderLayout());
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mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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mainFrame.add(comboBox, BorderLayout.CENTER);
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mainFrame.pack();
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mainFrame.setLocationRelativeTo(null);
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mainFrame.validate();
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mainFrame.setVisible(true);
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}
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static void runTest() throws Exception {
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Robot robot = new Robot();
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robot.delay(2000);
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Point p = comboBox.getLocationOnScreen();
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Dimension size = comboBox.getSize();
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p.x += size.width / 2;
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p.y += size.height / 2;
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robot.mouseMove(p.x, p.y);
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robot.keyPress(KeyEvent.VK_ENTER);
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robot.delay(50);
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robot.keyRelease(KeyEvent.VK_ENTER);
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robot.delay(2000);
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}
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static class MyComboBoxUI extends BasicComboBoxUI {
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public void setPopupVisible(JComboBox c, boolean v) {
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if (popup instanceof BasicComboPopup) {
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ourPopup = (BasicComboPopup) popup;
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}
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super.setPopupVisible(c, v);
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}
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}
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}
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