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