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Java > Open Source Codes > net > mlw > vlh > swing > support > filter > ButtonGroupFilterRetriever


1 /**
2  * Copyright (c) 2003 held jointly by the individual authors.
3  *
4  * This library is free software; you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License as published
6  * by the Free Software Foundation; either version 2.1 of the License, or
7  * (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; with out even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with this library; if not, write to the Free Software Foundation,
16  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17  *
18  * > http://www.gnu.org/copyleft/lesser.html
19  * > http://www.opensource.org/licenses/lgpl-license.php
20  */
21 package net.mlw.vlh.swing.support.filter;
22
23 import javax.swing.ButtonGroup JavaDoc;
24
25 import net.mlw.vlh.Errors;
26
27 /**
28  * @author Matthew L. Wilson
29  * @version $Revision: 1.3 $ $Date: 2006/05/04 15:30:43 $
30  */
31 public class ButtonGroupFilterRetriever extends AbstractFilterRetriever
32 {
33    private ButtonGroup JavaDoc group;
34
35    private String JavaDoc convertToNullValue;
36
37    /**
38     * @param key
39     */
40    public ButtonGroupFilterRetriever(String JavaDoc key, ButtonGroup JavaDoc group)
41    {
42       super(key);
43       this.group = group;
44    }
45
46    /**
47     * @param key
48     */
49    public ButtonGroupFilterRetriever(String JavaDoc key, ButtonGroup JavaDoc group, String JavaDoc convertToNullValue)
50    {
51       super(key);
52       this.group = group;
53       this.convertToNullValue = convertToNullValue;
54    }
55
56    /**
57     * @see net.mlw.vlh.swing.FilterRetriever#getFilterValue()
58     */
59    public Object JavaDoc getFilterValue(Errors errors)
60    {
61       String JavaDoc value = group.getSelection().getActionCommand();
62       return (convertToNullValue == null) ? value : (convertToNullValue.equals(value)) ? "" : value;
63    }
64
65    public Object JavaDoc reset()
66    {
67       group.setSelected(group.getSelection(), false);
68 // for (Enumeration buttons = group.getElements(); buttons.hasMoreElements();)
69 // {
70 // AbstractButton button = (AbstractButton) buttons.nextElement();
71 // button.setSelected(false);
72 // }
73
74       return group;
75    }
76 }
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