1 /*
2 * XNap - A P2P framework and client.
3 *
4 * See the file AUTHORS for copyright information.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 package org.xnap.util.prefs;
21
22 import org.xnap.XNap;
23
24 /***
25 * A validator for tree table column preferences.
26 */
27 public class TreeTableColumnsValidator implements Validator
28 {
29
30 //--- Constant(s) ---
31
32 //--- Data field(s) ---
33
34 String firstColumn;
35
36 //--- Constructor(s) ---
37
38 /***
39 * Makes sure the <code>firstColumn</code> is always the first
40 * column and not set invisible.
41 */
42 public TreeTableColumnsValidator(String firstColumn)
43 {
44 this.firstColumn = firstColumn;
45 }
46
47 //--- Method(s) ---
48
49 public void validate(String value)
50 {
51 if (!value.startsWith(firstColumn)) {
52 throw new IllegalArgumentException
53 (XNap.tr("First column at wrong position or not visible."));
54 }
55 }
56
57 }