1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package javax.swing; |
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27 |
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28 import java.beans.*; |
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29 import java.lang.reflect.*; |
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30 import java.awt.Image; |
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31 |
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32 /** |
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33 * The superclass for all Swing BeanInfo classes. It provides |
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34 * default implementations of <code>getIcon</code> and |
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35 * <code>getDefaultPropertyIndex</code> as well as utility |
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36 * methods, like createPropertyDescriptor, for writing BeanInfo |
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37 * implementations. This classes is intended to be used along |
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38 * with <code>GenSwingBeanInfo</code> a BeanInfo class code generator. |
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39 * |
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40 * @see GenSwingBeanInfo |
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41 * @author Hans Muller |
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42 */ |
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43 public class SwingBeanInfoBase extends SimpleBeanInfo |
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44 { |
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45 /** |
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46 * The default index is always 0. In other words the first property |
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47 * listed in the getPropertyDescriptors() method is the one |
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48 * to show a (JFC builder) user in a situation where just a single |
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49 * property will be shown. |
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50 */ |
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51 public int getDefaultPropertyIndex() { |
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52 return 0; |
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53 } |
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54 |
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55 /** |
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56 * Returns a generic Swing icon, all icon "kinds" are supported. |
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57 * Subclasses should defer to this method when they don't have |
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58 * a particular beans icon kind. |
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59 */ |
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60 public Image getIcon(int kind) { |
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61 // PENDING(hmuller) need generic swing icon images. |
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62 return null; |
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63 } |
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64 |
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65 /** |
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66 * Returns the BeanInfo for the superclass of our bean, so that |
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67 * its PropertyDescriptors will be included. |
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68 */ |
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69 public BeanInfo[] getAdditionalBeanInfo() { |
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70 Class<?> superClass = getBeanDescriptor().getBeanClass().getSuperclass(); |
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71 BeanInfo superBeanInfo = null; |
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72 try { |
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73 superBeanInfo = Introspector.getBeanInfo(superClass); |
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74 } catch (IntrospectionException ie) {} |
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75 if (superBeanInfo != null) { |
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76 BeanInfo[] ret = new BeanInfo[1]; |
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77 ret[0] = superBeanInfo; |
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78 return ret; |
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79 } |
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80 return null; |
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81 } |
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82 } |
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