442 lines
14 KiB
Java
442 lines
14 KiB
Java
/*
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* Copyright (c) 2001, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4388802
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* @summary tests that clipboard operations during drag-and-drop don't deadlock
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* @key headful
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* @run main DnDClipboardDeadlockTest
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*/
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import java.awt.AWTEvent;
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import java.awt.AWTException;
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import java.awt.Button;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.GridLayout;
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import java.awt.List;
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import java.awt.Panel;
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import java.awt.Point;
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import java.awt.Robot;
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import java.awt.Toolkit;
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import java.awt.datatransfer.Clipboard;
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import java.awt.datatransfer.DataFlavor;
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import java.awt.datatransfer.StringSelection;
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import java.awt.datatransfer.Transferable;
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import java.awt.dnd.DnDConstants;
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import java.awt.dnd.DragGestureEvent;
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import java.awt.dnd.DragGestureListener;
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import java.awt.dnd.DragSource;
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import java.awt.dnd.DragSourceDragEvent;
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import java.awt.dnd.DragSourceDropEvent;
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import java.awt.dnd.DragSourceEvent;
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import java.awt.dnd.DragSourceListener;
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import java.awt.dnd.DropTarget;
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import java.awt.dnd.DropTargetContext;
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import java.awt.dnd.DropTargetDragEvent;
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import java.awt.dnd.DropTargetDropEvent;
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import java.awt.dnd.DropTargetEvent;
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import java.awt.dnd.DropTargetListener;
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import java.awt.event.AWTEventListener;
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import java.awt.event.InputEvent;
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import java.awt.event.KeyEvent;
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import java.awt.event.MouseEvent;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.Serializable;
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public class DnDClipboardDeadlockTest {
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public static final int CODE_NOT_RETURNED = -1;
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public static final int CODE_OK = 0;
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public static final int CODE_FAILURE = 1;
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private int returnCode = CODE_NOT_RETURNED;
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final Frame frame = new Frame();
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Robot robot = null;
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Panel panel = null;
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public static void main(String[] args) throws Exception {
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DnDClipboardDeadlockTest test = new DnDClipboardDeadlockTest();
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if (args.length == 4) {
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test.run(args);
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} else {
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test.start();
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}
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}
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public void run(String[] args) throws InterruptedException, AWTException {
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try {
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if (args.length != 4) {
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throw new RuntimeException("Incorrect command line arguments.");
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}
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int x = Integer.parseInt(args[0]);
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int y = Integer.parseInt(args[1]);
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int w = Integer.parseInt(args[2]);
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int h = Integer.parseInt(args[3]);
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Transferable t = new StringSelection("TEXT");
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panel = new DragSourcePanel(t);
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frame.setTitle("DragSource frame");
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frame.setLocation(300, 200);
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frame.add(panel);
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frame.pack();
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frame.setVisible(true);
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Util.waitForInit();
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Point sourcePoint = panel.getLocationOnScreen();
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Dimension d = panel.getSize();
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sourcePoint.translate(d.width / 2, d.height / 2);
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Point targetPoint = new Point(x + w / 2, y + h / 2);
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robot = new Robot();
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if (!Util.pointInComponent(robot, sourcePoint, panel)) {
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throw new RuntimeException("WARNING: Cannot locate source panel");
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}
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robot.mouseMove(sourcePoint.x, sourcePoint.y);
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robot.keyPress(KeyEvent.VK_CONTROL);
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robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
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for (; !sourcePoint.equals(targetPoint);
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sourcePoint.translate(sign(targetPoint.x - sourcePoint.x),
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sign(targetPoint.y - sourcePoint.y))) {
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robot.mouseMove(sourcePoint.x, sourcePoint.y);
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Thread.sleep(10);
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}
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robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
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robot.keyRelease(KeyEvent.VK_CONTROL);
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if (frame != null) {
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frame.dispose();
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}
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} catch (Throwable e) {
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e.printStackTrace();
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throw new RuntimeException(e);
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}
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} // run()
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public static int sign(int n) {
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return n < 0 ? -1 : n == 0 ? 0 : 1;
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}
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public void start() {
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panel = new DropTargetPanel();
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frame.setTitle("DropTarget frame");
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frame.setLocation(10, 200);
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frame.add(panel);
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frame.pack();
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frame.setVisible(true);
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try {
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Util.waitForInit();
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Point p = panel.getLocationOnScreen();
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Dimension d = panel.getSize();
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try {
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Robot robot = new Robot();
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Point center = new Point(p);
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center.translate(d.width / 2, d.height / 2);
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if (!Util.pointInComponent(robot, center, panel)) {
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System.err.println("WARNING: Cannot locate target panel");
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return;
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}
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} catch (AWTException awte) {
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awte.printStackTrace();
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return;
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}
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String javaPath = System.getProperty("java.home", "");
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String command = javaPath + File.separator + "bin" +
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File.separator + "java -cp "
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+ System.getProperty("java.class.path", ".")
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+ " DnDClipboardDeadlockTest " +
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p.x + " " + p.y + " " + d.width + " " + d.height;
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Process process = Runtime.getRuntime().exec(command);
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returnCode = process.waitFor();
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InputStream errorStream = process.getErrorStream();
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int count = errorStream.available();
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if (count > 0) {
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byte[] b = new byte[count];
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errorStream.read(b);
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System.err.println("========= Child VM System.err ========");
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System.err.print(new String(b));
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System.err.println("======================================");
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}
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} catch (Throwable e) {
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e.printStackTrace();
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}
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switch (returnCode) {
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case CODE_NOT_RETURNED:
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System.err.println("Child VM: failed to start");
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break;
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case CODE_OK:
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System.err.println("Child VM: normal termination");
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break;
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case CODE_FAILURE:
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System.err.println("Child VM: abnormal termination");
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break;
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}
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if (returnCode != CODE_OK) {
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throw new RuntimeException("The test failed.");
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}
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if (frame != null) {
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frame.dispose();
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}
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} // start()
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} // class DnDClipboardDeadlockTest
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class Util implements AWTEventListener {
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private static final Toolkit tk = Toolkit.getDefaultToolkit();
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private static final Object SYNC_LOCK = new Object();
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private Component clickedComponent = null;
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private static final int PAINT_TIMEOUT = 10000;
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private static final int MOUSE_RELEASE_TIMEOUT = 10000;
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private static final Util util = new Util();
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static {
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tk.addAWTEventListener(util, 0xFFFFFFFF);
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}
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private void reset() {
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clickedComponent = null;
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}
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public void eventDispatched(AWTEvent e) {
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if (e.getID() == MouseEvent.MOUSE_RELEASED) {
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clickedComponent = (Component) e.getSource();
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synchronized (SYNC_LOCK) {
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SYNC_LOCK.notifyAll();
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}
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}
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}
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public static boolean pointInComponent(Robot robot, Point p, Component comp)
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throws InterruptedException {
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return util.isPointInComponent(robot, p, comp);
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}
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private boolean isPointInComponent(Robot robot, Point p, Component comp)
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throws InterruptedException {
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tk.sync();
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robot.waitForIdle();
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reset();
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robot.mouseMove(p.x, p.y);
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robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
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synchronized (SYNC_LOCK) {
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robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
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SYNC_LOCK.wait(MOUSE_RELEASE_TIMEOUT);
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}
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Component c = clickedComponent;
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while (c != null && c != comp) {
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c = c.getParent();
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}
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return c == comp;
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}
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public static void waitForInit() throws InterruptedException {
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final Frame f = new Frame() {
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public void paint(Graphics g) {
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dispose();
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synchronized (SYNC_LOCK) {
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SYNC_LOCK.notifyAll();
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}
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}
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};
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f.setBounds(600, 400, 200, 200);
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synchronized (SYNC_LOCK) {
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f.setVisible(true);
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SYNC_LOCK.wait(PAINT_TIMEOUT);
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}
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tk.sync();
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}
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}
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class DragSourceButton extends Button implements Serializable,
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DragGestureListener,
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DragSourceListener {
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static final Clipboard systemClipboard =
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Toolkit.getDefaultToolkit().getSystemClipboard();
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final Transferable transferable;
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public DragSourceButton(Transferable t) {
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super("DragSourceButton");
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this.transferable = t;
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DragSource ds = DragSource.getDefaultDragSource();
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ds.createDefaultDragGestureRecognizer(this, DnDConstants.ACTION_COPY,
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this);
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}
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public void dragGestureRecognized(DragGestureEvent dge) {
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dge.startDrag(null, transferable, this);
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}
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public void dragEnter(DragSourceDragEvent dsde) {
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}
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public void dragExit(DragSourceEvent dse) {
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}
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public void dragOver(DragSourceDragEvent dsde) {
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try {
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Transferable t = systemClipboard.getContents(null);
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if (t.isDataFlavorSupported(DataFlavor.stringFlavor)) {
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String str = (String) t.getTransferData(DataFlavor.stringFlavor);
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}
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systemClipboard.setContents(new StringSelection("SOURCE"), null);
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} catch (IOException ioe) {
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ioe.printStackTrace();
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if (!ioe.getMessage().equals("Owner failed to convert data")) {
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throw new RuntimeException("Owner failed to convert data");
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}
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} catch (IllegalStateException e) {
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// IllegalStateExceptions do not indicate a bug in this case.
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// They result from concurrent modification of system clipboard
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// contents by the parent and child processes.
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// These exceptions are numerous, so we avoid dumping their
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// backtraces to prevent blocking child process io, which
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// causes test failure on timeout.
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public void dragDropEnd(DragSourceDropEvent dsde) {
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System.exit(DnDClipboardDeadlockTest.CODE_OK);
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}
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public void dropActionChanged(DragSourceDragEvent dsde) {
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}
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}
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class DragSourcePanel extends Panel {
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final Dimension preferredDimension = new Dimension(200, 200);
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public DragSourcePanel(Transferable t) {
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setLayout(new GridLayout(1, 1));
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add(new DragSourceButton(t));
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}
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public Dimension getPreferredSize() {
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return preferredDimension;
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}
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}
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class DropTargetPanel extends Panel implements DropTargetListener {
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static final Clipboard systemClipboard =
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Toolkit.getDefaultToolkit().getSystemClipboard();
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final Dimension preferredDimension = new Dimension(200, 200);
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public DropTargetPanel() {
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setBackground(Color.green);
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setDropTarget(new DropTarget(this, this));
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setLayout(new GridLayout(1, 1));
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}
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public Dimension getPreferredSize() {
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return preferredDimension;
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}
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public void dragEnter(DropTargetDragEvent dtde) {
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dtde.acceptDrag(DnDConstants.ACTION_COPY);
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}
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public void dragExit(DropTargetEvent dte) {
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}
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public void dragOver(DropTargetDragEvent dtde) {
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dtde.acceptDrag(DnDConstants.ACTION_COPY);
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try {
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Transferable t = systemClipboard.getContents(null);
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if (t.isDataFlavorSupported(DataFlavor.stringFlavor)) {
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String str = (String) t.getTransferData(DataFlavor.stringFlavor);
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}
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systemClipboard.setContents(new StringSelection("TARGET"), null);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public void drop(DropTargetDropEvent dtde) {
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DropTargetContext dtc = dtde.getDropTargetContext();
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if ((dtde.getSourceActions() & DnDConstants.ACTION_COPY) != 0) {
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dtde.acceptDrop(DnDConstants.ACTION_COPY);
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} else {
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dtde.rejectDrop();
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return;
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}
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removeAll();
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final List list = new List();
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add(list);
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Transferable t = dtde.getTransferable();
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DataFlavor[] dfs = t.getTransferDataFlavors();
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for (int i = 0; i < dfs.length; i++) {
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DataFlavor flavor = dfs[i];
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String str = null;
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if (DataFlavor.stringFlavor.equals(flavor)) {
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try {
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str = (String) t.getTransferData(flavor);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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list.add(str + ":" + flavor.getMimeType());
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}
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dtc.dropComplete(true);
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validate();
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}
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public void dropActionChanged(DropTargetDragEvent dtde) {
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}
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}
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