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61
62 package org.objectweb.jonas.webapp.taglib;
63
64 import java.io.Serializable  ;
65 import java.util.HashMap ;
66
67
77
78 public class TreeControl implements Serializable {
79 public static final String ID_PREFIX = "treenode";
80
81
83
86 public TreeControl() {
87 super();
88 setRoot(null);
89 }
90
91
96 public TreeControl(TreeControlNode root) {
97 super();
98 setRoot(root);
99 }
100
101
103
106 protected HashMap registry = new HashMap ();
107
108
111 protected TreeControlNode selected = null;
112
113 protected int mi_Id = 0;
115
116
118
121 protected TreeControlNode root = null;
122
123 public TreeControlNode getRoot() {
124 return (this.root);
125 }
126
127 protected void setRoot(TreeControlNode root) {
128 if (this.root != null) {
129 removeNode(this.root);
130 }
131 if (root != null) {
132 addNode(root);
133 }
134 root.setLast(true);
135 this.root = root;
136 }
137
138
142 public int getWidth() {
143 if (root == null) {
144 return (0);
145 }
146 else {
147 return (getWidth(root));
148 }
149 }
150
151
153
159 public TreeControlNode findNode(String name) {
160 synchronized (registry) {
161 return ((TreeControlNode) registry.get(name));
162 }
163 }
164
165
172 public void selectNode(String name) {
173 if (selected != null) {
174 selected.setSelected(false);
175 selected = null;
176 }
177 selected = findNode(name);
178 if (selected != null) {
179 selected.setSelected(true);
180 }
181 }
182
183
188 public TreeControlNode getSelected() {
189 return selected;
190 }
191
192
195 public void expandSelectedParents() {
196 TreeControlNode oCur = getSelected();
197 while (oCur != null){
198 oCur = oCur.getParent();
199 if (oCur != null) {
200 oCur.setExpanded(true);
201 }
202 }
203 }
204
205 public String newId() {
206 StringBuffer sbRet = new StringBuffer (ID_PREFIX);
207 sbRet.append(mi_Id);
208 mi_Id++;
209 return sbRet.toString();
210 }
211
212
214
222 void addNode(TreeControlNode node)
223 throws IllegalArgumentException {
224 synchronized (registry) {
225 String name = node.getName();
226 if (registry.containsKey(name)) {
227 throw new IllegalArgumentException ("Name '" + name + "' is not unique");
228 }
229 node.setTree(this);
230 registry.put(name, node);
231 autoRefresh(node);
233 }
234 }
235
236
241 int getWidth(TreeControlNode node) {
242 int width = node.getWidth();
243 if (!node.isExpanded()) {
244 return (width);
245 }
246 TreeControlNode children[] = node.findChildren();
247 for (int i = 0; i < children.length; i++) {
248 int current = getWidth(children[i]);
249 if (current > width) {
250 width = current;
251 }
252 }
253 return (width);
254 }
255
256
263 void removeNode(TreeControlNode node) {
264 synchronized (registry) {
265 TreeControlNode children[] = node.findChildren();
266 for (int i = 0; i < children.length; i++) {
267 removeNode(children[i]);
268 }
269 TreeControlNode parent = node.getParent();
270 if (parent != null) {
271 parent.removeChild(node);
272 }
273 node.setParent(null);
274 node.setTree(null);
275 if (node == this.root) {
276 this.root = null;
277 }
278 registry.remove(node.getName());
279 addRemovedList(node);
281 }
282 }
283
284
288 private HashMap m_RemovedList = null;
289
290
293 public void disableAutoRefresh() {
294 if (m_RemovedList != null) {
295 m_RemovedList.clear();
296 }
297 m_RemovedList = null;
298 }
299
300
309 public void enableAutoRefresh() {
310 m_RemovedList = new HashMap ();
311 }
312
313
318 void addRemovedList(TreeControlNode p_RemovedNode) {
319 if (m_RemovedList != null) {
320 m_RemovedList.put(p_RemovedNode.getName(), p_RemovedNode);
321 }
322 }
323
324
329 protected void autoRefresh(TreeControlNode p_AddedNode) {
330 if (m_RemovedList != null) {
331 TreeControlNode oRemove = (TreeControlNode) m_RemovedList.get(p_AddedNode.getName());
332 if (oRemove != null) {
333 p_AddedNode.setExpanded(oRemove.isExpanded());
334 }
335 }
336 }
337 }
338 |
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