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/*
* Copyright (c) 2002, 2024, 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 java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Point;
import java.awt.Robot;
import java.awt.datatransfer.StringSelection;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSource;
import java.awt.dnd.DragSourceAdapter;
import java.awt.dnd.DragSourceDragEvent;
import java.awt.dnd.DragSourceDropEvent;
import java.awt.dnd.DragSourceEvent;
import java.awt.dnd.DragSourceListener;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetAdapter;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.event.InputEvent;
/*
* @test
* @key headful
* @bug 4407521
* @summary Tests that DragSourceListener.dragEnter() and
DragSourceListener.dragOver() are not called after
drag rejecting, but DragSourceListener.dragExit() is.
*/
public class RejectDragTest {
private static Frame frame;
private static Robot robot;
private static volatile boolean dragEnterCalled;
private static volatile boolean dragOverCalled;
private static volatile boolean dragExitCalledAtFirst;
private static volatile Point startPoint;
private static volatile Point endPoint;
public static void main(String[] args) throws Exception {
try {
robot = new Robot();
EventQueue.invokeAndWait(RejectDragTest::createAndShowUI);
robot.waitForIdle();
robot.delay(1000);
EventQueue.invokeAndWait(RejectDragTest::addDnDListeners);
robot.waitForIdle();
testDnD();
robot.waitForIdle();
robot.delay(200);
} finally {
EventQueue.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
private static void addDnDListeners() {
final DragSourceListener dragSourceListener = new DragSourceAdapter() {
private boolean first = true;
public void dragEnter(DragSourceDragEvent dsde) {
first = false;
dragEnterCalled = true;
}
public void dragExit(DragSourceEvent dse) {
if (first) {
dragExitCalledAtFirst = true;
first = false;
}
}
public void dragDropEnd(DragSourceDropEvent dsde) {
first = false;
}
public void dragOver(DragSourceDragEvent dsde) {
first = false;
dragOverCalled = true;
}
public void dropActionChanged(DragSourceDragEvent dsde) {
first = false;
}
};
DragGestureListener dragGestureListener =
dge -> dge.startDrag(null, new StringSelection("OKAY"),
dragSourceListener);
new DragSource().createDefaultDragGestureRecognizer(frame,
DnDConstants.ACTION_COPY,
dragGestureListener);
DropTargetAdapter dropTargetListener = new DropTargetAdapter() {
public void dragEnter(DropTargetDragEvent dtde) {
dtde.rejectDrag();
}
public void drop(DropTargetDropEvent dtde) {
dtde.rejectDrop();
}
};
new DropTarget(frame, dropTargetListener);
}
private static void createAndShowUI() {
frame = new Frame("RejectDragTest");
frame.setSize(200, 200);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void testDnD() throws Exception {
EventQueue.invokeAndWait(() -> {
Point start = frame.getLocationOnScreen();
start.translate(50, 50);
startPoint = start;
Point end = new Point(start);
end.translate(150, 150);
endPoint = end;
});
robot.mouseMove(startPoint.x, startPoint.y);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
for (Point p = new Point(startPoint); !p.equals(endPoint);
p.translate(sign(endPoint.x - p.x),
sign(endPoint.y - p.y))) {
robot.mouseMove(p.x, p.y);
robot.delay(30);
}
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
if (dragEnterCalled || dragOverCalled) {
throw new RuntimeException("Test failed: " +
(dragEnterCalled ? "DragSourceListener.dragEnter() was called; " : "") +
(dragOverCalled ? "DragSourceListener.dragOver() was called; " : "") +
(!dragExitCalledAtFirst ? "DragSourceListener.dragExit() was not " +
"called immediately after rejectDrag() " : ""));
}
}
public static int sign(int n) {
return Integer.compare(n, 0);
}
}
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