1 /*
   2  * Copyright (c) 2007, 2011, 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 6480024
  27   @library ../../../regtesthelpers
  28   @build Util Sysout AbstractTest
  29   @summary stack overflow on mouse wheel rotation within Applet
  30   @author Andrei Dmitriev: area=awt.event
  31   @run applet InfiniteRecursion_3.html
  32 */
  33 
  34 /**
  35  * InfiniteRecursion_3.java
  36  *
  37  * summary: put a JButton into Applet.
  38  * Add MouseWheelListener to Applet.
  39  * Rotating a wheel over the JButton would result in stack overflow.
  40  */
  41 
  42 import java.awt.*;
  43 import java.awt.event.*;
  44 import javax.swing.*;
  45 import test.java.awt.regtesthelpers.Util;
  46 import test.java.awt.regtesthelpers.AbstractTest;
  47 import test.java.awt.regtesthelpers.Sysout;
  48 import java.applet.Applet;
  49 
  50 public class InfiniteRecursion_3 extends Applet {
  51     final static Robot robot = Util.createRobot();
  52     final static int MOVE_COUNT = 5;
  53     //*2 for both rotation directions,
  54     //*2 as Java sends the wheel event to every for nested component in hierarchy under cursor
  55     final static int EXPECTED_COUNT = MOVE_COUNT * 2 * 2;
  56     static int actualEvents = 0;
  57 






  58     public void init()
  59     {
  60         setLayout (new BorderLayout ());
  61     }//End  init()
  62 
  63     public void start ()
  64     {
  65         JButton jButton = new JButton();
  66 
  67         this.setSize(200, 200);
  68         this.addMouseWheelListener(new MouseWheelListener() {
  69                 public void mouseWheelMoved(MouseWheelEvent e)
  70                 {
  71                     System.out.println("Wheel moved on APPLET : "+e);
  72                     actualEvents++;
  73                 }
  74             });
  75 
  76         this.add(jButton);
  77 
  78         this.setVisible(true);
  79         this.validate();
  80 
  81         Util.waitForIdle(robot);
  82 
  83         Util.pointOnComp(jButton, robot);
  84         Util.waitForIdle(robot);
  85 
  86         for (int i = 0; i < MOVE_COUNT; i++){
  87             robot.mouseWheel(1);
  88             robot.delay(10);
  89         }
  90 
  91         for (int i = 0; i < MOVE_COUNT; i++){
  92             robot.mouseWheel(-1);
  93             robot.delay(10);
  94         }
  95 
  96         Util.waitForIdle(robot);
  97         //Not fair to check for multiplier 4 as it's not specified actual number of WheelEvents
  98         //result in a single wheel rotation.
  99         if (actualEvents != EXPECTED_COUNT) {
 100             AbstractTest.fail("Expected events count: "+ EXPECTED_COUNT+" Actual events count: "+ actualEvents);
 101         }
 102     }// start()
 103 }
--- EOF ---