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J. Duke319a3b92007-12-01 00:00:00 +00001/*
2 * Copyright 1997-2004 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26package javax.swing;
27
28import java.beans.*;
29import java.lang.reflect.*;
30import 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 */
43public 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}