1 /*
   2  * Copyright (c) 2011, 2018, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 
  27 package sun.lwawt;
  28 
  29 import java.awt.Button;
  30 import java.awt.event.ActionEvent;
  31 import java.awt.event.ActionListener;
  32 import java.awt.peer.ButtonPeer;
  33 
  34 import javax.swing.JButton;
  35 
  36 /**
  37  * Lightweight implementation of {@link ButtonPeer}. Delegates most of the work
  38  * to the {@link JButton}.
  39  */
  40 final class LWButtonPeer extends LWComponentPeer<Button, JButton>
  41         implements ButtonPeer, ActionListener {
  42 
  43     LWButtonPeer(final Button target,
  44                  final PlatformComponent platformComponent) {
  45         super(target, platformComponent);
  46     }
  47 
  48     @Override
  49     JButton createDelegate() {
  50         return new JButtonDelegate();
  51     }
  52 
  53     @Override
  54     void initializeImpl() {
  55         super.initializeImpl();
  56         setLabel(getTarget().getLabel());
  57         synchronized (getDelegateLock()) {
  58             getDelegate().addActionListener(this);
  59         }
  60     }
  61 
  62     @Override
  63     public void actionPerformed(final ActionEvent e) {
  64         postEvent(new ActionEvent(getTarget(), ActionEvent.ACTION_PERFORMED,
  65                                   getTarget().getActionCommand(), e.getWhen(),
  66                                   e.getModifiers()));
  67     }
  68 
  69     @Override
  70     public void setLabel(final String label) {
  71         synchronized (getDelegateLock()) {
  72             getDelegate().setText(label);
  73         }
  74     }
  75 
  76     @Override
  77     public boolean isFocusable() {
  78         return true;
  79     }
  80 
  81     @SuppressWarnings("serial")// Safe: outer class is non-serializable.
  82     private final class JButtonDelegate extends JButton {
  83 
  84         @Override
  85         public boolean hasFocus() {
  86             return getTarget().hasFocus();
  87         }
  88     }
  89 }