1 /* 2 * Copyright (c) 1997, 2013, 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; 27 28 import java.beans.*; 29 import java.lang.reflect.*; 30 import java.awt.Image; 31 32 /** 33 * The superclass for all Swing BeanInfo classes. It provides 34 * default implementations of <code>getIcon</code> and 35 * <code>getDefaultPropertyIndex</code> as well as utility 36 * methods, like createPropertyDescriptor, for writing BeanInfo 37 * implementations. This classes is intended to be used along 38 * with <code>GenSwingBeanInfo</code> a BeanInfo class code generator. 39 * 40 * @see GenSwingBeanInfo 41 * @author Hans Muller 42 */ 43 public class SwingBeanInfoBase extends SimpleBeanInfo 44 { 45 /** 46 * The default index is always 0. In other words the first property 47 * listed in the getPropertyDescriptors() method is the one 48 * to show a (JFC builder) user in a situation where just a single 49 * property will be shown. 50 */ 51 public int getDefaultPropertyIndex() { 52 return 0; 53 } 54 55 /** 56 * Returns a generic Swing icon, all icon "kinds" are supported. 57 * Subclasses should defer to this method when they don't have 58 * a particular beans icon kind. 59 */ 60 public Image getIcon(int kind) { 61 // PENDING(hmuller) need generic swing icon images. 62 return null; 63 } 64 65 /** 66 * Returns the BeanInfo for the superclass of our bean, so that 67 * its PropertyDescriptors will be included. 68 */ 69 public BeanInfo[] getAdditionalBeanInfo() { 70 Class superClass = getBeanDescriptor().getBeanClass().getSuperclass(); 71 BeanInfo superBeanInfo = null; 72 try { 73 superBeanInfo = Introspector.getBeanInfo(superClass); 74 } catch (IntrospectionException ie) {} 75 if (superBeanInfo != null) { 76 BeanInfo[] ret = new BeanInfo[1]; 77 ret[0] = superBeanInfo; 78 return ret; 79 } 80 return null; 81 } 82 }