1 /***
2 * ReportFilter.java
3 *
4 * This file is part of the creme library.
5 * The creme library intends to ease the development effort of large
6 * applications by providing easy to use support classes.
7 *
8 * Copyright (C) 2002 Denis Bregeon
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 * contact information: dbregeon@sourceforge.net
25 */
26 package org.jcreme.filters;
27
28 /***
29 * This interface decribes the properties of a generic ReportFilter. A
30 * ReportFilter is basically a filter that can be listened. This is necessary so
31 * that reports can be updated when the filter they use is changed.
32 *
33 * @author $Author: dbregeon $
34 * @version $Revision: 1.1 $
35 */
36 public interface ReportFilter extends Filter {
37 /***
38 * This enables to add a listener for the changes of the filter.
39 *
40 * @param listener
41 * the object that will react to the modifications.
42 */
43 public void addFilterChangeListener(FilterChangeListener listener);
44
45 /***
46 * This enables to remove a listener for the changes of the filter.
47 *
48 * @param listener
49 * the listener to remove.
50 */
51 public void removeFilterChangeListener(FilterChangeListener listener);
52 }
53