8260633: [macos] java/awt/dnd/MouseEventAfterStartDragTest/MouseEventAfterStartDragTest.html test failed

Backport-of: 6f7ddbec7d0bc459d44b6518fe1d982eaba7f37b

Author: Andrew Lu

test/jdk/java/awt/dnd/MouseEventAfterStartDragTest/MouseEventAfterStartDragTest.java

@@ -0,0 +1,214 @@
+/*
+ * Copyright (c) 2014, 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.AWTEvent;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Frame;
+import java.awt.Point;
+import java.awt.Robot;
+import java.awt.datatransfer.StringSelection;
+import java.awt.datatransfer.Transferable;
+import java.awt.dnd.DnDConstants;
+import java.awt.dnd.DragGestureEvent;
+import java.awt.dnd.DragGestureListener;
+import java.awt.dnd.DragSource;
+import java.awt.dnd.DragSourceAdapter;
+import java.awt.dnd.DragSourceDragEvent;
+import java.awt.dnd.DragSourceListener;
+import java.awt.event.AWTEventListener;
+import java.awt.event.InputEvent;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseMotionAdapter;
+import java.awt.event.MouseMotionListener;
+import javax.swing.SwingUtilities;
+
+/*
+ * @test
+ * @bug 4613903
+ * @summary verifies that mouse events are not dispatched during drag
+ * @key headful
+ * @run main MouseEventAfterStartDragTest
+ */
+
+public final class MouseEventAfterStartDragTest implements AWTEventListener {
+    final Frame frame = new Frame();
+    volatile Point srcPoint;
+    volatile Dimension d;
+    volatile MouseEvent lastMouseEvent = null;
+    volatile boolean passed = true;
+    final DragSource dragSource = DragSource.getDefaultDragSource();
+    final Transferable transferable = new StringSelection("TEXT");
+
+    final MouseMotionListener mouseMotionListener = new MouseMotionAdapter() {
+        public void mouseDragged(MouseEvent e) {
+            System.out.println("mouseDragged: " + e
+                    + ", hash:" + e.hashCode());
+            if (lastMouseEvent != null && !e.equals(lastMouseEvent)) {
+                System.out.println("Unexpected: " + e
+                        + ", hash:" + e.hashCode());
+                passed = false;
+            }
+        }
+    };
+
+    final DragSourceListener dragSourceListener = new DragSourceAdapter() {
+        public void dragDropEnd(DragSourceDragEvent dsde) {
+            System.out.println("dragDropEnd: " + dsde);
+            lastMouseEvent = null;
+        }
+    };
+
+    final DragGestureListener dragGestureListener = new DragGestureListener() {
+        public void dragGestureRecognized(DragGestureEvent dge) {
+            System.out.println("dragGestureRecognized: " + dge);
+            Object[] events = dge.toArray();
+            Object lastEvent = events[events.length - 1];
+            if (lastEvent instanceof MouseEvent) {
+                lastMouseEvent = (MouseEvent) lastEvent;
+            }
+            System.out.println("The last mouse event: " + lastMouseEvent
+                    + ", hash:" + lastMouseEvent.hashCode());
+            dge.startDrag(null, transferable, dragSourceListener);
+        }
+    };
+
+    static final Object SYNC_LOCK = new Object();
+    static final int MOUSE_RELEASE_TIMEOUT = 1000;
+    volatile Component clickedComponent = null;
+
+    public static void main(String[] args) throws Exception {
+        System.setProperty("awt.dnd.drag.threshold", "0");
+        MouseEventAfterStartDragTest app = new MouseEventAfterStartDragTest();
+        try {
+            app.createAndShowGUI();
+            app.test();
+        } finally {
+            app.dispose();
+        }
+    }
+
+    public void createAndShowGUI() throws Exception {
+        SwingUtilities.invokeAndWait(() -> {
+            frame.setTitle("Test frame");
+            frame.setBounds(100, 100, 200, 200);
+            frame.setLocationRelativeTo(null);
+            frame.addMouseMotionListener(mouseMotionListener);
+            dragSource.createDefaultDragGestureRecognizer(frame, DnDConstants.ACTION_COPY_OR_MOVE,
+                    dragGestureListener);
+
+            frame.getToolkit().addAWTEventListener(this, AWTEvent.MOUSE_EVENT_MASK);
+            frame.setVisible(true);
+        });
+    }
+
+    public static int sign(int n) {
+        return n < 0 ? -1 : n == 0 ? 0 : 1;
+    }
+
+    public void test() throws Exception {
+        final Robot robot = new Robot();
+        robot.setAutoDelay(45);
+        robot.waitForIdle();
+
+        SwingUtilities.invokeAndWait(() -> {
+            srcPoint = frame.getLocationOnScreen();
+            d = frame.getSize();
+        });
+        srcPoint.translate(d.width / 2, d.height / 2);
+
+        if (!pointInComponent(robot, srcPoint, frame)) {
+            System.err.println("WARNING: Couldn't locate source frame.");
+            return;
+        }
+
+        final Point dstPoint = new Point(srcPoint);
+        dstPoint.translate(d.width / 4, d.height / 4);
+
+        if (!pointInComponent(robot, dstPoint, frame)) {
+            System.err.println("WARNING: Couldn't locate target frame.");
+            return;
+        }
+
+        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
+        robot.mouseMove(srcPoint.x, srcPoint.y);
+        robot.delay(250);
+        System.out.println("srcPoint = " + srcPoint);
+        for (; !srcPoint.equals(dstPoint);
+                srcPoint.translate(sign(dstPoint.x - srcPoint.x),
+                sign(dstPoint.y - srcPoint.y))) {
+            robot.mouseMove(srcPoint.x, srcPoint.y);
+            System.out.println("srcPoint = " + srcPoint);
+        }
+
+        robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
+        System.out.println("done");
+        robot.waitForIdle();
+        robot.delay(MOUSE_RELEASE_TIMEOUT);
+
+        if (!passed) {
+            throw new RuntimeException("Test failed");
+        }
+    }
+
+    public void dispose() throws Exception {
+        SwingUtilities.invokeAndWait(() -> {
+            if (frame != null) {
+                frame.dispose();
+            }
+        });
+    }
+
+    public void reset() {
+        clickedComponent = null;
+    }
+
+    public void eventDispatched(AWTEvent e) {
+        if (e.getID() == MouseEvent.MOUSE_RELEASED) {
+            clickedComponent = (Component) e.getSource();
+            synchronized (SYNC_LOCK) {
+                SYNC_LOCK.notifyAll();
+            }
+        }
+    }
+
+    boolean pointInComponent(Robot robot, Point p, Component comp)
+            throws InterruptedException {
+        robot.waitForIdle();
+        reset();
+        robot.mouseMove(p.x, p.y);
+        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
+        synchronized (SYNC_LOCK) {
+            robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
+            SYNC_LOCK.wait(MOUSE_RELEASE_TIMEOUT);
+        }
+
+        Component c = clickedComponent;
+
+        while (c != null && c != comp) {
+            c = c.getParent();
+        }
+
+        return c == comp;
+    }
+}