1 /*
2 * XNap Commons
3 *
4 * Copyright (C) 2005 Steffen Pingel
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 package org.xnap.commons.settings;
21
22 /***
23 * Defines the requirements for classes that provide a setting.
24 */
25 public interface Setting<T>
26 {
27
28 T getDefaultValue();
29
30 /***
31 * Returns the unique key used that used to identify the setting.
32 */
33 String getKey();
34
35 T getValue();
36
37 /***
38 * Reverts the setting to its default value.
39 */
40 void revert();
41
42 void setValue(T newValue);
43
44 }