1 /*
2 * File: RelationalInterval.java
3 * Copyright (c) 2004-2008 Peter Kliem (Peter.Kliem@jaret.de)
4 * A commercial license is available, see http://www.jaret.de.
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; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program 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
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 package de.jaret.util.ui.timebars.model;
21
22 import java.util.ArrayList;
23 import java.util.List;
24
25 import de.jaret.util.date.IntervalImpl;
26
27 /**
28 * Simple implementation of the relational interval based on the standard interval. Handles the relation when a relation
29 * is removed (setting the appropriate field in the relation to <code>null</code>. Does handle
30 *
31 * @author kliem
32 * @version $Id: RelationalInterval.java 800 2008-12-27 22:27:33Z kliem $
33 */
34 public class RelationalInterval extends IntervalImpl implements IRelationalInterval {
35 /** list of relations. */
36 protected List<IIntervalRelation> _relations = new ArrayList<IIntervalRelation>();
37
38 /**
39 * {@inheritDoc}
40 */
41 public void addRelation(IIntervalRelation relation) {
42 if (!_relations.contains(relation)) {
43 _relations.add(relation);
44 firePropertyChange(RELATIONS, null, relation);
45 }
46 }
47
48 /**
49 * {@inheritDoc}
50 */
51 public List<IIntervalRelation> getRelations() {
52 return _relations;
53 }
54
55 /**
56 * {@inheritDoc}. Removes the reference from the relation.
57 */
58 public void removeRelation(IIntervalRelation relation) {
59 if (_relations.contains(relation)) {
60 _relations.remove(relation);
61 if (relation.getStartInterval() == this) {
62 relation.setStartInterval(null);
63 }
64 if (relation.getEndInterval() == this) {
65 relation.setEndInterval(null);
66 }
67 firePropertyChange(RELATIONS, relation, null);
68 }
69 }
70
71 }