1 /*
   2  * Copyright (c) 1998, 2014, 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 package javax.swing.plaf.metal;
  27 
  28 import sun.awt.AppContext;
  29 
  30 import javax.swing.*;
  31 import javax.swing.plaf.basic.BasicCheckBoxUI;
  32 
  33 import java.awt.*;
  34 import java.awt.event.*;
  35 import javax.swing.plaf.*;
  36 import java.io.Serializable;
  37 
  38 
  39 /**
  40  * CheckboxUI implementation for MetalCheckboxUI
  41  * <p>
  42  * <strong>Warning:</strong>
  43  * Serialized objects of this class will not be compatible with
  44  * future Swing releases. The current serialization support is
  45  * appropriate for short term storage or RMI between applications running
  46  * the same version of Swing.  As of 1.4, support for long term storage
  47  * of all JavaBeans&trade;
  48  * has been added to the <code>java.beans</code> package.
  49  * Please see {@link java.beans.XMLEncoder}.
  50  *
  51  * @author Michael C. Albers
  52  *
  53  */
  54 @SuppressWarnings("serial") // Same-version serialization only
  55 public class MetalCheckBoxUI extends MetalRadioButtonUI {
  56 
  57     // NOTE: MetalCheckBoxUI inherts from MetalRadioButtonUI instead
  58     // of BasicCheckBoxUI because we want to pick up all the
  59     // painting changes made in MetalRadioButtonUI.
  60 
  61     private static final Object METAL_CHECK_BOX_UI_KEY = new Object();
  62 
  63     private final static String propertyPrefix = "CheckBox" + ".";
  64 
  65     private boolean defaults_initialized = false;
  66 
  67     // ********************************
  68     //         Create PlAF
  69     // ********************************
  70     public static ComponentUI createUI(JComponent b) {
  71         AppContext appContext = AppContext.getAppContext();
  72         MetalCheckBoxUI checkboxUI =
  73                 (MetalCheckBoxUI) appContext.get(METAL_CHECK_BOX_UI_KEY);
  74         if (checkboxUI == null) {
  75             checkboxUI = new MetalCheckBoxUI();
  76             appContext.put(METAL_CHECK_BOX_UI_KEY, checkboxUI);
  77         }
  78         return checkboxUI;
  79     }
  80 
  81     public String getPropertyPrefix() {
  82         return propertyPrefix;
  83     }
  84 
  85     // ********************************
  86     //          Defaults
  87     // ********************************
  88     public void installDefaults(AbstractButton b) {
  89         super.installDefaults(b);
  90         if(!defaults_initialized) {
  91             icon = UIManager.getIcon(getPropertyPrefix() + "icon");
  92             defaults_initialized = true;
  93         }
  94     }
  95 
  96     protected void uninstallDefaults(AbstractButton b) {
  97         super.uninstallDefaults(b);
  98         defaults_initialized = false;
  99     }
 100 
 101 }