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_2.html 32 */ 33 34 /** 35 * InfiniteRecursion_2.java 36 * 37 * summary: put a JButton into JPanel and then put JPanel into Applet. 38 * Add MouseWheelListener to Applet. 39 * Add MouseListener to JPanel. 40 * Rotating a wheel over the JButton would result in stack overflow. 41 42 * summary: put a JButton into JApplet. 43 * Add MouseWheelListener to JApplet. 44 * Rotating a wheel over the JButton would result in stack overflow. 45 */ 46 47 import java.awt.*; 48 import java.awt.event.*; 49 import javax.swing.*; 50 import test.java.awt.regtesthelpers.Util; 51 import test.java.awt.regtesthelpers.AbstractTest; 52 import test.java.awt.regtesthelpers.Sysout; 53 54 import java.applet.Applet; 55 56 public class InfiniteRecursion_2 extends Applet { 57 final static Robot robot = Util.createRobot(); 58 final static int MOVE_COUNT = 5; 59 //*2 for both rotation directions, 60 //*2 as Java sends the wheel event to every for nested component in hierarchy under cursor 61 final static int EXPECTED_COUNT = MOVE_COUNT * 2 * 2; 62 static int actualEvents = 0; 63 64 public void init() 65 { 66 setLayout (new BorderLayout ()); 67 }//End init() 68 69 public void start () 70 { 71 JPanel outputBox = new JPanel(); 72 JButton jButton = new JButton(); 73 74 this.setSize(200, 200); 75 this.addMouseWheelListener(new MouseWheelListener() { 76 public void mouseWheelMoved(MouseWheelEvent e) 77 { 78 System.out.println("Wheel moved on APPLET : "+e); 79 actualEvents++; 80 } 81 }); 82 83 outputBox.addMouseListener(new MouseAdapter() { 84 public void mousePressed(MouseEvent e) 85 { 86 System.out.println("MousePressed on OUTBOX : "+e); 87 } 88 89 }); 90 this.add(outputBox); 91 outputBox.add(jButton); 92 93 this.setVisible(true); 94 this.validate(); 95 96 97 Util.waitForIdle(robot); 98 99 Util.pointOnComp(jButton, robot); 100 Util.waitForIdle(robot); 101 102 for (int i = 0; i < MOVE_COUNT; i++){ 103 robot.mouseWheel(1); 104 robot.delay(10); 105 } 106 107 for (int i = 0; i < MOVE_COUNT; i++){ 108 robot.mouseWheel(-1); 109 robot.delay(10); 110 } 111 112 Util.waitForIdle(robot); 113 //Not fair to check for multiplier 4 as it's not specified actual number of WheelEvents 114 //result in a single wheel rotation. 115 if (actualEvents != EXPECTED_COUNT) { 116 AbstractTest.fail("Expected events count: "+ EXPECTED_COUNT+" Actual events count: "+ actualEvents); 117 } 118 }// start() 119 }