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 import java.beans.PropertyChangeListener;
23
24 /***
25 * Defines the requirements for classes that provide means to store settings.
26 */
27 public interface SettingResource {
28
29 void addPropertyChangeListener(String key, PropertyChangeListener l);
30
31 void firePropertyChange(String key, Object oldValue, Object newValue);
32
33 /***
34 * Returns the value to which the specified key is mapped.
35 */
36 String get(String key, String defaultValue);
37
38 void remove(String key);
39
40 void put(String key, String value);
41
42 void removePropertyChangeListener(String key, PropertyChangeListener l);
43
44 }