1 /*
   2  * Copyright (c) 2006, 2016, 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   @key headful
  27   @bug 6418028
  28   @author oleg.sukhodolsky: area=awt.focus
  29   @library ../../regtesthelpers
  30   @modules java.desktop/java.awt.peer
  31            java.desktop/sun.awt
  32   @build Util
  33   @run main RequestOnCompWithNullParent1
  34 */
  35 
  36 import java.awt.*;
  37 import java.awt.event.*;
  38 import java.awt.peer.ButtonPeer;
  39 import java.awt.peer.ComponentPeer;
  40 import java.lang.reflect.Field;
  41 import java.lang.reflect.InvocationHandler;
  42 import java.lang.reflect.InvocationTargetException;
  43 import java.lang.reflect.Method;
  44 import java.lang.reflect.Proxy;
  45 
  46 import sun.awt.AWTAccessor;
  47 
  48 public class RequestOnCompWithNullParent1 {
  49 
  50     public static void main(final String[] args) throws Exception {
  51         Frame frame = new Frame("test for 6418028");
  52         try {
  53             test(frame);
  54         } finally {
  55             frame.dispose();
  56         }
  57     }
  58 
  59     private static void test(final Frame frame) throws Exception {
  60         frame.setLayout(new FlowLayout());
  61         Button btn1 = new Button("Button1");
  62         frame.add(btn1);
  63         TestButton btn2 = new TestButton("Button2");
  64         frame.add(btn2);
  65         frame.pack();
  66         frame.addWindowListener(new WindowAdapter() {
  67             @Override
  68             public void windowClosing(WindowEvent we) {
  69                 we.getWindow().dispose();
  70             }
  71         });
  72         frame.setVisible(true);
  73 
  74         new Robot().waitForIdle();
  75 
  76         btn2.instrumentPeer();
  77         btn2.requestFocusInWindow();
  78         btn2.restorePeer();
  79     }
  80 }
  81 
  82 class TestButton extends Button {
  83     ButtonPeer origPeer;
  84     ButtonPeer proxiedPeer;
  85 
  86     /** Creates a new instance of TestButton */
  87     TestButton(String text) {
  88         super(text);
  89     }
  90 
  91     public void instrumentPeer() {
  92         origPeer = AWTAccessor.getComponentAccessor().getPeer(this);
  93 
  94         InvocationHandler handler = new InvocationHandler() {
  95             public Object invoke(Object proxy, Method method, Object[] args) {
  96                 if (method.getName().equals("requestFocus")) {
  97                     Container parent = getParent();
  98                     parent.remove(TestButton.this);
  99                     System.err.println("parent = " + parent);
 100                     System.err.println("target = " + TestButton.this);
 101                     System.err.println("new parent = " + TestButton.this.getParent());
 102                 }
 103                 Object ret = null;
 104                 try {
 105                     ret = method.invoke(origPeer, args);
 106                 } catch (IllegalAccessException iae) {
 107                     throw new Error("Test error.", iae);
 108                 } catch (InvocationTargetException ita) {
 109                     throw new Error("Test error.", ita);
 110                 }
 111                 return ret;
 112             }
 113         };
 114 
 115         proxiedPeer = (ButtonPeer) Proxy.newProxyInstance(
 116                                     ButtonPeer.class.getClassLoader(),
 117                                     new Class[] {ButtonPeer.class}, handler);
 118         setPeer(proxiedPeer);
 119     }
 120 
 121     private void setPeer(final ComponentPeer newPeer) {
 122         try {
 123             Field peer_field = Component.class.getDeclaredField("peer");
 124             peer_field.setAccessible(true);
 125             peer_field.set(this, newPeer);
 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         } catch (NoSuchFieldException ex) {
 133             throw new Error("Test error.", ex);
 134         }
 135     }
 136 
 137     public void restorePeer() {
 138         if (origPeer != null) {
 139             setPeer(origPeer);
 140             proxiedPeer = null;
 141         }
 142     }
 143 }