1 /*
2 * File: DefaultTimeBarNode.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.ArrayList;
23 import java.util.List;
24
25 /**
26 * A default implementation of a TimeBarNode.
27 *
28 * @author Peter Kliem
29 * @version $Id: DefaultTimeBarNode.java 800 2008-12-27 22:27:33Z kliem $
30 */
31 public class DefaultTimeBarNode extends DefaultTimeBarRowModel implements TimeBarNode {
32 /** list of children of this node. */
33 List<TimeBarNode> _children = new ArrayList<TimeBarNode>();
34
35 /** level in the hierarchy. */
36 protected int _level = -1;
37
38 /** list of listeners to be informed about changes. */
39 List<TimeBarNodeListener> _nodeListeners;
40
41 /**
42 * Constructor.
43 *
44 * @param header row header.
45 */
46 public DefaultTimeBarNode(TimeBarRowHeader header) {
47 super(header);
48 }
49
50 /**
51 * Default row header. Constructs a default row header with an empty string.
52 */
53 public DefaultTimeBarNode() {
54 this(new DefaultRowHeader(""));
55 }
56
57 /**
58 * {@inheritDoc}
59 */
60 public List<TimeBarNode> getChildren() {
61 return _children;
62 }
63
64 /**
65 * {@inheritDoc}
66 */
67 public void addNode(TimeBarNode node) {
68 node.setLevel(getLevel() + 1);
69 _children.add(node);
70 fireNodeAdded(node);
71 }
72
73 /**
74 * {@inheritDoc}
75 */
76 public void remNode(TimeBarNode node) {
77 if (_children.remove(node)) {
78 fireNodeRemoved(node);
79 }
80 }
81
82 /**
83 * {@inheritDoc}
84 */
85 public int getLevel() {
86 return _level;
87 }
88
89 /**
90 * {@inheritDoc}
91 */
92 public void setLevel(int level) {
93 _level = level;
94 if (_children != null) {
95 for (TimeBarNode node : _children) {
96 node.setLevel(level + 1);
97 }
98 }
99 }
100
101 /**
102 * {@inheritDoc}
103 */
104 public void addTimeBarNodeListener(TimeBarNodeListener tbnl) {
105 if (_nodeListeners == null) {
106 _nodeListeners = new ArrayList<TimeBarNodeListener>();
107 }
108 _nodeListeners.add(tbnl);
109 super.addTimeBarRowListener(tbnl);
110 }
111
112 /**
113 * {@inheritDoc}
114 */
115 public void removeTimeBarNodeListener(TimeBarNodeListener tbnl) {
116 if (_nodeListeners == null) {
117 return;
118 }
119 _nodeListeners.remove(tbnl);
120 super.remTimeBarRowListener(tbnl);
121 }
122
123 /**
124 * Inform listeners about a new child.
125 *
126 * @param newNode the added node
127 */
128 protected void fireNodeAdded(TimeBarNode newNode) {
129 if (_nodeListeners != null) {
130 for (TimeBarNodeListener listener : _nodeListeners) {
131 listener.nodeAdded(this, newNode);
132 }
133 }
134 }
135
136 /**
137 * Inform listeners about the removal of a child.
138 *
139 * @param removedNode the removed child
140 */
141 protected void fireNodeRemoved(TimeBarNode removedNode) {
142 if (_nodeListeners != null) {
143 for (TimeBarNodeListener listener : _nodeListeners) {
144 listener.nodeRemoved(this, removedNode);
145 }
146 }
147 }
148
149 }