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/*
* Copyright (c) 2019, 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.
*/
/*
@test
@key headful
@bug 8231991
@summary Mouse wheel change focus on awt/swing windows
@run main MouseWheelOnBackgroundComponent
*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.WindowEvent;
/**
* MouseWheelOnBackgroundComponent
*
* Tests that wheel events don't change focus on background components
*/
public class MouseWheelOnBackgroundComponent {
private static final String FG = "Foreground";
private static final String BG = "Background";
private static final String SCROLL_PANE = "scroller_";
private static final String TEXT_PANE = "text_";
private static JFrame background;
private static JFrame foreground;
private static final String LOREM_IPSUM = "Sed ut perspiciatis unde omnis iste natus " +
"error sit voluptatem accusantium doloremque laudantium, totam " +
"rem aperiam, eaque ipsa quae ab illo inventore veritatis et " +
"quasi architecto beatae vitae dicta sunt explicabo. Nemo enim " +
"ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, " +
"sed quia consequuntur magni dolores eos qui ratione voluptatem sequi " +
"nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit " +
"amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora " +
"incidunt ut labore et dolore magnam aliquam quaerat voluptatem. " +
"Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis " +
"suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis " +
"autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil " +
"molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla " +
"pariatur?";
private static class FocusReporter implements FocusListener {
private JComponent pane;
Component lastFocusedComponent;
public FocusReporter() {
}
@Override
public void focusGained(FocusEvent e) {
lastFocusedComponent = e.getComponent();
}
@Override
public void focusLost(FocusEvent e) {
lastFocusedComponent = null;
}
}
private static FocusReporter reporter;
public static void main(String[] args) throws Exception {
boolean passed = false;
SwingUtilities.invokeAndWait(() -> {
reporter = new FocusReporter();
foreground = createFrame(FG, 100, 0, reporter);
background = createFrame(BG, 0, 100, reporter);
background.pack();
background.setVisible(true);
foreground.pack();
foreground.setVisible(true);
});
SwingUtilities.invokeAndWait(() -> {
foreground.toFront();
});
Robot robot = new Robot();
robot.waitForIdle();
robot.mouseMove(50, 300);
robot.waitForIdle();
robot.mouseWheel(-100);
robot.waitForIdle();
String shouldBeFocusedComponentName = TEXT_PANE + FG;
Component actual = reporter.lastFocusedComponent;
if (reporter.lastFocusedComponent != null &&
shouldBeFocusedComponentName.equals(actual.getName()))
{
passed = true;
}
robot.waitForIdle();
SwingUtilities.invokeAndWait(() -> {
foreground.dispatchEvent(new WindowEvent(foreground, WindowEvent.WINDOW_CLOSING));
background.dispatchEvent(new WindowEvent(background, WindowEvent.WINDOW_CLOSING));
});
robot.waitForIdle();
if (!passed) {
throw new RuntimeException("Wrong component has focus: " + actual);
}
}
private static JFrame createFrame(String name, int x, int y, FocusReporter reporter) {
JFrame frame = new JFrame(name);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setBounds(x, y, 600, 600);
frame.setPreferredSize(new Dimension(600, 600));
JTextArea text = new JTextArea();
text.setText(LOREM_IPSUM);
for (int i = 0; i < 10; i++) {
text.append(LOREM_IPSUM);
}
text.setLineWrap(true);
text.setName(TEXT_PANE + name);
text.addFocusListener(reporter);
JScrollPane scroller = new JScrollPane(text);
scroller.setName(SCROLL_PANE + name);
scroller.setWheelScrollingEnabled(true);
scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
scroller.addFocusListener(reporter);
frame.add(scroller);
return frame;
}
}
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