1 /*
   2  * Copyright (c) 2006, 2015, 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 6418028
  27   @author oleg.sukhodolsky: area=awt.focus
  28   @library ../../regtesthelpers
  29   @modules java.desktop/java.awt.peer
  30   @build Util
  31   @run main RequestOnCompWithNullParent1
  32 */
  33 
  34 import java.awt.*;
  35 import java.awt.event.*;
  36 import java.awt.peer.ButtonPeer;
  37 import java.awt.peer.ComponentPeer;
  38 import java.lang.reflect.Field;
  39 import java.lang.reflect.InvocationHandler;
  40 import java.lang.reflect.InvocationTargetException;
  41 import java.lang.reflect.Method;
  42 import java.lang.reflect.Proxy;
  43 
  44 public class RequestOnCompWithNullParent1 {
  45 
  46     static Field peer_field;
  47 
  48     public static void main(final String[] args) throws Exception {
  49         Frame frame = new Frame("test for 6418028");
  50         try {
  51             test(frame);
  52         } finally {
  53             frame.dispose();
  54         }
  55     }
  56 
  57     private static void test(final Frame frame) throws Exception {
  58         frame.setLayout(new FlowLayout());
  59         Button btn1 = new Button("Button1");
  60         frame.add(btn1);
  61         TestButton btn2 = new TestButton("Button2");
  62         frame.add(btn2);
  63         frame.pack();
  64         frame.addWindowListener(new WindowAdapter() {
  65             @Override
  66             public void windowClosing(WindowEvent we) {
  67                 we.getWindow().dispose();
  68             }
  69         });
  70         frame.setVisible(true);
  71 
  72         new Robot().waitForIdle();
  73 
  74         peer_field = Component.class.getDeclaredField("peer");
  75         peer_field.setAccessible(true);
  76 
  77         btn2.instrumentPeer();
  78         btn2.requestFocusInWindow();
  79         btn2.restorePeer();
  80     }
  81 }
  82 
  83 class TestButton extends Button {
  84     ButtonPeer origPeer;
  85     ButtonPeer proxiedPeer;
  86 
  87     /** Creates a new instance of TestButton */
  88     TestButton(String text) {
  89         super(text);
  90     }
  91 
  92     public void instrumentPeer() {
  93         origPeer = getPeer();
  94 
  95         InvocationHandler handler = new InvocationHandler() {
  96             public Object invoke(Object proxy, Method method, Object[] args) {
  97                 if (method.getName().equals("requestFocus")) {
  98                     Container parent = getParent();
  99                     parent.remove(TestButton.this);
 100                     System.err.println("parent = " + parent);
 101                     System.err.println("target = " + TestButton.this);
 102                     System.err.println("new parent = " + TestButton.this.getParent());
 103                 }
 104                 Object ret = null;
 105                 try {
 106                     ret = method.invoke(origPeer, args);
 107                 } catch (IllegalAccessException iae) {
 108                     throw new Error("Test error.", iae);
 109                 } catch (InvocationTargetException ita) {
 110                     throw new Error("Test error.", ita);
 111                 }
 112                 return ret;
 113             }
 114         };
 115 
 116         proxiedPeer = (ButtonPeer) Proxy.newProxyInstance(
 117                                     ButtonPeer.class.getClassLoader(),
 118                                     new Class[] {ButtonPeer.class}, handler);
 119         setPeer(proxiedPeer);
 120     }
 121 
 122     private ButtonPeer getPeer() {
 123         try {
 124             return (ButtonPeer)
 125                     RequestOnCompWithNullParent1.peer_field.get(this);
 126         } catch (IllegalArgumentException ex) {
 127             throw new Error("Test error.", ex);
 128         } catch (SecurityException ex) {
 129             throw new Error("Test error.", ex);
 130         } catch (IllegalAccessException ex) {
 131             throw new Error("Test error.", ex);
 132         }
 133     }
 134 
 135     private void setPeer(final ComponentPeer newPeer) {
 136         try {
 137             RequestOnCompWithNullParent1.peer_field.set(this, newPeer);
 138         } catch (IllegalArgumentException ex) {
 139             throw new Error("Test error.", ex);
 140         } catch (SecurityException ex) {
 141             throw new Error("Test error.", ex);
 142         } catch (IllegalAccessException ex) {
 143             throw new Error("Test error.", ex);
 144         }
 145     }
 146 
 147     public void restorePeer() {
 148         if (origPeer != null) {
 149             setPeer(origPeer);
 150             proxiedPeer = null;
 151         }
 152     }
 153 }