1 /*
2 * File: AbstractTimeBarNode.java
3 * Copyright (c) 2004-2007 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.List;
23 import java.util.Vector;
24
25 /**
26 * Abstract base implementation for a timebar node.
27 *
28 * @author Peter Kliem
29 * @version $Id: AbstractTimeBarNode.java 802 2008-12-28 12:30:41Z kliem $
30 */
31 public abstract class AbstractTimeBarNode extends AbstractTimeBarRowModel implements TimeBarNode {
32 /** list of registered listeners. */
33 protected List<TimeBarNodeListener> _nodeListeners;
34
35 /**
36 * Default constructor. Do not forget to set a headre when using this constructor.
37 */
38 public AbstractTimeBarNode() {
39
40 }
41
42 /**
43 * Constructor supplying a header.
44 *
45 * @param header the header for teh node
46 */
47 public AbstractTimeBarNode(TimeBarRowHeader header) {
48 super(header);
49 }
50
51 /**
52 * {@inheritDoc}
53 */
54 public synchronized void addTimeBarNodeListener(TimeBarNodeListener tbnl) {
55 if (_nodeListeners == null) {
56 _nodeListeners = new Vector<TimeBarNodeListener>();
57 }
58 _nodeListeners.add(tbnl);
59 super.addTimeBarRowListener(tbnl);
60 }
61
62 /**
63 * {@inheritDoc}
64 */
65 public synchronized void removeTimeBarNodeListener(TimeBarNodeListener tbnl) {
66 if (_nodeListeners == null) {
67 return;
68 }
69 _nodeListeners.remove(tbnl);
70 super.remTimeBarRowListener(tbnl);
71 }
72
73 /**
74 * Inform listeners about a new node.
75 *
76 * @param newNode the added node
77 */
78 protected void fireNodeAdded(TimeBarNode newNode) {
79 if (_nodeListeners != null) {
80 for (TimeBarNodeListener listener : _nodeListeners) {
81 listener.nodeAdded(this, newNode);
82 }
83 }
84 }
85
86 /**
87 * Inform listeners about a removed node.
88 *
89 * @param removedNode the node that has been removed
90 */
91 protected void fireNodeRemoved(TimeBarNode removedNode) {
92 if (_nodeListeners != null) {
93 for (TimeBarNodeListener listener : _nodeListeners) {
94 listener.nodeRemoved(this, removedNode);
95 }
96 }
97 }
98
99 }