8307128: Open source some drag and drop tests 4

Reviewed-by: prr

test/jdk/java/awt/dnd/MouseExitGestureTriggerTest.java

@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 1999, 2023, 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 javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.JTree;
+import java.awt.EventQueue;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.Robot;
+import java.awt.dnd.DnDConstants;
+import java.awt.dnd.DragGestureEvent;
+import java.awt.dnd.DragGestureListener;
+import java.awt.dnd.DragSource;
+import java.awt.event.InputEvent;
+
+/*
+  @test
+  @bug 4273712 4396746
+  @summary tests that mouse exit event doesn't trigger drag
+  @key headful
+  @run main MouseExitGestureTriggerTest
+*/
+
+public class MouseExitGestureTriggerTest {
+
+    boolean recognized = false;
+    volatile JFrame frame;
+    volatile JPanel panel;
+    volatile JTree tree;
+    volatile DragSource dragSource;
+    volatile Point srcPoint;
+    volatile Rectangle r;
+    volatile DragGestureListener dgl;
+    static final int FRAME_ACTIVATION_TIMEOUT = 2000;
+    static final int RECOGNITION_TIMEOUT = 1000;
+
+    public static void main(String[] args) throws Exception {
+        MouseExitGestureTriggerTest test = new MouseExitGestureTriggerTest();
+        EventQueue.invokeAndWait(test::init);
+        try {
+            test.start();
+        } finally {
+            EventQueue.invokeAndWait(() -> {
+                if (test.frame != null) {
+                    test.frame.dispose();
+                }
+            });
+        }
+    }
+
+    public void init() {
+        frame = new JFrame("MouseExitGestureTriggerTest");
+        panel = new JPanel();
+        tree = new JTree();
+
+        dragSource = DragSource.getDefaultDragSource();
+        dgl = new DragGestureListener() {
+            public void dragGestureRecognized(DragGestureEvent dge) {
+                Thread.dumpStack();
+                recognized = true;
+            }
+        };
+
+        tree.setEditable(true);
+        dragSource.createDefaultDragGestureRecognizer(tree,
+                                                      DnDConstants.ACTION_MOVE,
+                                                      dgl);
+        panel.add(tree);
+        frame.getContentPane().add(panel);
+        frame.setLocation(200, 200);
+
+        frame.pack();
+        frame.setVisible(true);
+    }
+
+    public void start() throws Exception {
+        final Robot robot = new Robot();
+        Thread.sleep(FRAME_ACTIVATION_TIMEOUT);
+
+        clickRootNode(robot);
+        clickRootNode(robot);
+        clickRootNode(robot);
+
+        Thread.sleep(RECOGNITION_TIMEOUT);
+
+        EventQueue.invokeAndWait(() -> {
+            if (recognized) {
+                throw new RuntimeException("Mouse exit event triggered drag");
+            }
+        });
+    }
+
+    void clickRootNode(final Robot robot) throws Exception {
+        EventQueue.invokeAndWait(() -> {
+            srcPoint = tree.getLocationOnScreen();
+            r = tree.getRowBounds(0);
+        });
+        srcPoint.translate(r.x + 2 * r.width /3 , r.y + r.height / 2);
+        robot.mouseMove(srcPoint.x ,srcPoint.y);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        Thread.sleep(10);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Thread.sleep(10);
+    }
+}