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/*
* Copyright (c) 2001, 2025, 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
* @bug 4417964
* @summary tests that drag events continue to arrive to heavyweight
* when the mouse is moved to lightweight while dragging.
* @key headful
* @library /lib/client /java/awt/regtesthelpers
* @build ExtendedRobot Util
* @run main DragToLightweightTest
*/
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.HeadlessException;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import test.java.awt.regtesthelpers.Util;
public class DragToLightweightTest {
private static final CountDownLatch latch = new CountDownLatch(1);
private static volatile MouseTest mouseTest;
public static void main(String[] args) throws Exception {
EventQueue.invokeAndWait(() -> mouseTest = new MouseTest());
try {
test();
} finally {
EventQueue.invokeAndWait(() -> {
if (mouseTest != null) {
mouseTest.dispose();
}
});
}
}
private static void test() throws Exception {
ExtendedRobot robot = new ExtendedRobot();
robot.waitForIdle();
robot.delay(500);
Rectangle componentBounds = mouseTest.getLightweightComponentBounds();
robot.dragAndDrop(
componentBounds.x + componentBounds.width / 2, componentBounds.y + componentBounds.height + 30,
componentBounds.x + componentBounds.width / 2, componentBounds.y + 2 * componentBounds.height / 3
);
if (!latch.await(5, TimeUnit.SECONDS)) {
throw new RuntimeException("The test failed: no mouse release event received");
}
System.out.println("Mouse release event received, the test PASSED");
}
private static class MouseTest extends Frame {
final Foo foo;
public MouseTest() throws HeadlessException {
super("DragToLightweightTest");
setLayout(new FlowLayout());
addMouseListener(new MouseAdapter() {
@Override
public void mouseReleased(MouseEvent e) {
System.out.println("mouseReleased");
latch.countDown();
}
});
// Create a Component that will be a child of the Frame and add
// a MouseListener to it.
foo = new Foo();
foo.setBackground(Color.red);
System.out.println(foo.getPreferredSize());
foo.setPreferredSize(new Dimension(350, 200));
System.out.println(foo.getPreferredSize());
foo.addMouseListener(new DummyAdapter());
add(foo);
setSize(400, 400);
setLocationRelativeTo(null);
setVisible(true);
}
public Rectangle getLightweightComponentBounds() throws Exception {
return Util.invokeOnEDT(() -> {
Point locationOnScreen = foo.getLocationOnScreen();
Dimension size = foo.getSize();
return new Rectangle(locationOnScreen.x, locationOnScreen.y, size.width, size.height);
});
}
private static class Foo extends Container {
public void paint(Graphics g) {
g.setColor(getBackground());
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(Color.white);
g.drawString(getBounds().toString(), 5, 20);
super.paint(g);
}
}
private static class DummyAdapter extends MouseAdapter {}
}
}
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