1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 8024163
  27  * @summary Checks that dragExit is generated when the new DropTarget is created under the drag
  28  * @library ../../regtesthelpers
  29  * @build Util
  30  * @compile MissedDragExitTest.java
  31  * @run main/othervm MissedDragExitTest
  32  * @author Petr Pchelko
  33  */
  34 
  35 import test.java.awt.regtesthelpers.Util;
  36 
  37 import javax.swing.*;
  38 import java.awt.*;
  39 import java.awt.datatransfer.StringSelection;
  40 import java.awt.dnd.DnDConstants;
  41 import java.awt.dnd.DragGestureEvent;
  42 import java.awt.dnd.DragGestureListener;
  43 import java.awt.dnd.DragSource;
  44 import java.awt.dnd.DropTarget;
  45 import java.awt.dnd.DropTargetAdapter;
  46 import java.awt.dnd.DropTargetDragEvent;
  47 import java.awt.dnd.DropTargetDropEvent;
  48 import java.awt.dnd.DropTargetEvent;
  49 import java.awt.event.InputEvent;
  50 
  51 public class MissedDragExitTest {
  52 
  53     private static final int FRAME_SIZE = 100;
  54     private static final int FRAME_LOCATION = 100;
  55 
  56     private static volatile boolean dragExitCalled = false;
  57 
  58     private static volatile Frame f;
  59 
  60     private static void initAndShowUI() {
  61         f = new Frame("Test frame");
  62         f.setBounds(FRAME_LOCATION,FRAME_LOCATION,FRAME_SIZE,FRAME_SIZE);
  63 
  64         final DraggablePanel dragSource = new DraggablePanel();
  65         dragSource.setBackground(Color.yellow);
  66         DropTarget dt = new DropTarget(dragSource, new DropTargetAdapter() {
  67             @Override public void drop(DropTargetDropEvent dtde) { }
  68 
  69             @Override
  70             public void dragExit(DropTargetEvent dte) {
  71                 dragExitCalled = true;
  72             }
  73 
  74             @Override
  75             public void dragOver(DropTargetDragEvent dtde) {
  76                 Panel newDropTarget = new Panel();
  77                 newDropTarget.setDropTarget(new DropTarget());
  78                 newDropTarget.setBackground(Color.red);
  79                 newDropTarget.setBounds(0, 0, FRAME_SIZE, FRAME_SIZE);
  80                 dragSource.add(newDropTarget);
  81             }
  82         });
  83         dragSource.setDropTarget(dt);
  84         f.add(dragSource);
  85 
  86         f.setVisible(true);
  87     }
  88 
  89     public static void main(String[] args) throws Throwable {
  90         try {
  91 
  92             SwingUtilities.invokeAndWait(new Runnable() {
  93                 @Override
  94                 public void run() {
  95                     initAndShowUI();
  96                 }
  97             });
  98 
  99             Robot r = new Robot();
 100             Util.waitForIdle(r);
 101             Util.drag(r,
 102                     new Point(FRAME_LOCATION + FRAME_SIZE / 3, FRAME_LOCATION + FRAME_SIZE / 3),
 103                     new Point(FRAME_LOCATION + FRAME_SIZE / 3 * 2, FRAME_LOCATION + FRAME_SIZE / 3 * 2),
 104                     InputEvent.BUTTON1_MASK);
 105             Util.waitForIdle(r);
 106 
 107             if (!dragExitCalled) {
 108                 throw new RuntimeException("Failed. Drag exit was not called" );
 109             }
 110         } finally {
 111             if (f != null) {
 112                 f.dispose();
 113             }
 114         }
 115     }
 116 
 117     private static class DraggablePanel extends Panel implements DragGestureListener {
 118 
 119         public DraggablePanel() {
 120             (new DragSource()).createDefaultDragGestureRecognizer(this, DnDConstants.ACTION_COPY, this);
 121         }
 122 
 123         @Override
 124         public void dragGestureRecognized(DragGestureEvent dge) {
 125             dge.startDrag(Cursor.getDefaultCursor(), new StringSelection("test"));
 126         }
 127     }
 128 }