/* * Copyright (c) 2002, 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. */ /* @test @bug 4484572 4645584 @summary verifies that showing a modal dialog during the drag operation in the same JVM doesn't cause hang @key headful @run main SameJVMModalDialogDeadlockTest */ import java.awt.AWTEvent; import java.awt.AWTException; import java.awt.Component; import java.awt.Dialog; import java.awt.Dimension; import java.awt.EventQueue; 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.DragGestureListener; import java.awt.dnd.DragSource; import java.awt.dnd.DragSourceAdapter; import java.awt.dnd.DragSourceDragEvent; import java.awt.dnd.DragSourceDropEvent; import java.awt.event.AWTEventListener; import java.awt.event.InputEvent; import java.awt.event.MouseEvent; import java.lang.reflect.InvocationTargetException; public class SameJVMModalDialogDeadlockTest implements AWTEventListener { Frame frame; boolean shown = false; boolean finished = false; final DragSource dragSource = DragSource.getDefaultDragSource(); final Transferable transferable = new StringSelection("TEXT"); final DragSourceAdapter dragSourceAdapter = new DragSourceAdapter() { public void dragDropEnd(DragSourceDropEvent dsde) { finished = true; } public void dragMouseMoved(DragSourceDragEvent dsde) { if (shown) { return; } shown = true; final Dialog d = new Dialog(frame, "Dialog"); d.setModal(true); Runnable r1 = () -> d.setVisible(true); new Thread(r1).start(); } }; final DragGestureListener dragGestureListener = dge -> dge.startDrag(null, transferable); static final Object SYNC_LOCK = new Object(); static final int FRAME_ACTIVATION_TIMEOUT = 3000; static final int DROP_COMPLETION_TIMEOUT = 5000; static final int MOUSE_RELEASE_TIMEOUT = 1000; Component clickedComponent = null; public static void main(String[] args) throws InterruptedException, InvocationTargetException, AWTException { SameJVMModalDialogDeadlockTest sameJVMModalDialogDeadlockTest = new SameJVMModalDialogDeadlockTest(); EventQueue.invokeAndWait(sameJVMModalDialogDeadlockTest::init); sameJVMModalDialogDeadlockTest.start(); } public void init() { frame = new Frame("SameJVMModalDialogDeadlockTest"); frame.setTitle("Test frame"); frame.setBounds(100, 100, 200, 200); dragSource.createDefaultDragGestureRecognizer(frame, DnDConstants.ACTION_COPY_OR_MOVE, dragGestureListener); dragSource.addDragSourceMotionListener(dragSourceAdapter); dragSource.addDragSourceListener(dragSourceAdapter); frame.getToolkit().addAWTEventListener(this, AWTEvent.MOUSE_EVENT_MASK); frame.setVisible(true); } public void start() throws AWTException, InterruptedException, InvocationTargetException { try { final Robot robot = new Robot(); robot.waitForIdle(); robot.delay(FRAME_ACTIVATION_TIMEOUT); final Point srcPoint = frame.getLocationOnScreen(); Dimension 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); robot.mouseMove(srcPoint.x, srcPoint.y); robot.mousePress(InputEvent.BUTTON1_DOWN_MASK); for (;!srcPoint.equals(dstPoint); srcPoint.translate(sign(dstPoint.x - srcPoint.x), sign(dstPoint.y - srcPoint.y))) { robot.mouseMove(srcPoint.x, srcPoint.y); robot.delay(50); } robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK); robot.delay(DROP_COMPLETION_TIMEOUT); } finally { EventQueue.invokeAndWait(() -> { if (frame != null) { frame.dispose(); } }); } if (!finished) { throw new RuntimeException("DnD not completed"); } } public static int sign(int n) { return n < 0 ? -1 : n == 0 ? 0 : 1; } 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; } }