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 }