1 /*

     2  * Copyright (c) 1997, 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;

    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 }