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™ 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 static final String propertyPrefix = "CheckBox" + "."; 64 65 private boolean defaults_initialized = false; 66 67 // ******************************** 68 // Create PlAF 69 // ******************************** 70 71 /** 72 * Returns an instance of {@code MetalCheckBoxUI}. 73 * 74 * @param b a component 75 * @return a new instance of {@code MetalCheckBoxUI} 76 */ createUI(JComponent b)77 public static ComponentUI createUI(JComponent b) { 78 AppContext appContext = AppContext.getAppContext(); 79 MetalCheckBoxUI checkboxUI = 80 (MetalCheckBoxUI) appContext.get(METAL_CHECK_BOX_UI_KEY); 81 if (checkboxUI == null) { 82 checkboxUI = new MetalCheckBoxUI(); 83 appContext.put(METAL_CHECK_BOX_UI_KEY, checkboxUI); 84 } 85 return checkboxUI; 86 } 87 getPropertyPrefix()88 public String getPropertyPrefix() { 89 return propertyPrefix; 90 } 91 92 // ******************************** 93 // Defaults 94 // ******************************** installDefaults(AbstractButton b)95 public void installDefaults(AbstractButton b) { 96 super.installDefaults(b); 97 if(!defaults_initialized) { 98 icon = UIManager.getIcon(getPropertyPrefix() + "icon"); 99 defaults_initialized = true; 100 } 101 } 102 uninstallDefaults(AbstractButton b)103 protected void uninstallDefaults(AbstractButton b) { 104 super.uninstallDefaults(b); 105 defaults_initialized = false; 106 } 107 108 } 109