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1
61
62 package org.objectweb.jonas.webapp.taglib;
63
64 import java.io.IOException  ;
65 import java.net.URLEncoder ;
66
67 import javax.servlet.http.HttpServletResponse ;
68 import javax.servlet.jsp.JspException ;
69 import javax.servlet.jsp.JspWriter ;
70 import javax.servlet.jsp.PageContext ;
71 import javax.servlet.jsp.tagext.TagSupport ;
72
73
74
108
109 public class TreeControlTag extends TagSupport {
110
111
114 static final String DEFAULT_IMAGES = "images";
115
116
119 static final String IMAGE_HANDLE_DOWN_LAST = "handledownlast.gif";
120 static final String IMAGE_HANDLE_DOWN_MIDDLE = "handledownmiddle.gif";
121 static final String IMAGE_HANDLE_RIGHT_LAST = "handlerightlast.gif";
122 static final String IMAGE_HANDLE_RIGHT_MIDDLE = "handlerightmiddle.gif";
123 static final String IMAGE_LINE_LAST = "linelastnode.gif";
124 static final String IMAGE_LINE_MIDDLE = "linemiddlenode.gif";
125 static final String IMAGE_LINE_VERTICAL = "linevertical.gif";
126
127
129
135 protected String action = null;
136
137 public String getAction() {
138 return (this.action);
139 }
140
141 public void setAction(String action) {
142 this.action = action;
143 }
144
145
149 protected String images = DEFAULT_IMAGES;
150
151 public String getImages() {
152 return (this.images);
153 }
154
155 public void setImages(String images) {
156 this.images = images;
157 }
158
159
164 protected String scope = null;
165
166 public String getScope() {
167 return (this.scope);
168 }
169
170 public void setScope(String scope) {
171 if (!"page".equals(scope) && !"request".equals(scope) && !"session".equals(scope)
172 && !"application".equals(scope)) {
173 throw new IllegalArgumentException ("Invalid scope '" + scope + "'");
174 }
175 this.scope = scope;
176 }
177
178
181 protected String style = null;
182
183 public String getStyle() {
184 return (this.style);
185 }
186
187 public void setStyle(String style) {
188 this.style = style;
189 }
190
191
195 protected String styleSelected = null;
196
197 public String getStyleSelected() {
198 return (this.styleSelected);
199 }
200
201 public void setStyleSelected(String styleSelected) {
202 this.styleSelected = styleSelected;
203 }
204
205
209 protected String styleUnselected = null;
210
211 public String getStyleUnselected() {
212 return (this.styleUnselected);
213 }
214
215 public void setStyleUnselected(String styleUnselected) {
216 this.styleUnselected = styleUnselected;
217 }
218
219
223 protected String tree = null;
224
225 public String getTree() {
226 return (this.tree);
227 }
228
229 public void setTree(String tree) {
230 this.tree = tree;
231 }
232
233
235
240 public int doEndTag()
241 throws JspException {
242
243 TreeControl treeControl = getTreeControl();
244 JspWriter out = pageContext.getOut();
245 try {
246 out.print("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\"");
247 if (style != null) {
248 out.print(" class=\"");
249 out.print(style);
250 out.print("\"");
251 }
252 out.println(">");
253 int level = 0;
254 TreeControlNode node = treeControl.getRoot();
255 render(out, node, level, treeControl.getWidth(), true);
256 out.println("</table>");
257 }
258 catch (IOException e) {
259 throw new JspException (e);
260 }
261
262 return (EVAL_PAGE);
263
264 }
265
266
269 public void release() {
270
271 this.action = null;
272 this.images = DEFAULT_IMAGES;
273 this.scope = null;
274 this.style = null;
275 this.styleSelected = null;
276 this.styleUnselected = null;
277 this.tree = null;
278
279 }
280
281
283
289 protected TreeControl getTreeControl()
290 throws JspException {
291
292 Object treeControl = null;
293 if (scope == null) {
294 treeControl = pageContext.findAttribute(tree);
295 }
296 else if ("page".equals(scope)) {
297 treeControl = pageContext.getAttribute(tree, PageContext.PAGE_SCOPE);
298 }
299 else if ("request".equals(scope)) {
300 treeControl = pageContext.getAttribute(tree, PageContext.REQUEST_SCOPE);
301 }
302 else if ("session".equals(scope)) {
303 treeControl = pageContext.getAttribute(tree, PageContext.SESSION_SCOPE);
304 }
305 else if ("application".equals(scope)) {
306 treeControl = pageContext.getAttribute(tree, PageContext.APPLICATION_SCOPE);
307 }
308 if (treeControl == null) {
309 throw new JspException ("Cannot find tree control attribute '" + tree + "'");
310 }
311 else if (!(treeControl instanceof TreeControl)) {
312 throw new JspException ("Invalid tree control attribute '" + tree + "'");
313 }
314 else {
315 return ((TreeControl) treeControl);
316 }
317
318 }
319
320
332 protected void render(JspWriter out, TreeControlNode node, int level, int width, boolean last)
333 throws IOException {
334
335 HttpServletResponse response = (HttpServletResponse ) pageContext.getResponse();
336
337
340 if ("ROOT-NODE".equalsIgnoreCase(node.getName()) && (node.getLabel() == null)) {
341 TreeControlNode children[] = node.findChildren();
343 int lastIndex = children.length - 1;
344 int newLevel = level + 1;
345 for (int i = 0; i < children.length; i++) {
346 render(out, children[i], newLevel, width, i == lastIndex);
347 }
348 return;
349 }
350
351 out.println(" <tr valign=\"middle\">");
353
354 for (int i = 0; i < level; i++) {
356 int levels = level - i;
357 TreeControlNode parent = node;
358 for (int j = 1; j <= levels; j++) {
359 parent = parent.getParent();
360 }
361 if (parent.isLast()) {
362 out.print(" <td></td>");
363 }
364 else {
365 out.print(" <td><img SRC=\"");
366 out.print(images);
367 out.print("/");
368 out.print(IMAGE_LINE_VERTICAL);
369 out.print("\" border=\"0\"></td>");
370 }
371 out.println();
372 }
373
374
376 String encodedNodeName = URLEncoder.encode(node.getName(),"UTF-8");
381
382 String action = replace(getAction(), "${name}", encodedNodeName);
383
384 String updateTreeAction = replace(getAction(), "tree=${name}", "select=" + encodedNodeName);
385 updateTreeAction = ((HttpServletResponse ) pageContext.getResponse()).encodeURL(
386 updateTreeAction);
387
388 out.print(" <td>");
389 if ((action != null) && !node.isLeaf()) {
390 out.print("<a HREF=\"");
391 out.print(response.encodeURL(action));
392 out.print("\">");
393 }
394 out.print("<img SRC=\"");
395 out.print(images);
396 out.print("/");
397 if (node.isLeaf()) {
398 if (node.isLast()) {
399 out.print(IMAGE_LINE_LAST);
400 }
401 else {
402 out.print(IMAGE_LINE_MIDDLE);
403 }
404 }
405 else if (node.isExpanded()) {
406 if (node.isLast()) {
407 out.print(IMAGE_HANDLE_DOWN_LAST);
408 }
409 else {
410 out.print(IMAGE_HANDLE_DOWN_MIDDLE);
411 }
412 }
413 else {
414 if (node.isLast()) {
415 out.print(IMAGE_HANDLE_RIGHT_LAST);
416 }
417 else {
418 out.print(IMAGE_HANDLE_RIGHT_MIDDLE);
419 }
420 }
421 out.print("\" border=\"0\">");
422 if ((action != null) && !node.isLeaf()) {
423 out.print("</a>");
424 }
425 out.println("</td>");
426
427 String hyperlink = null;
429 if (node.getAction() != null) {
430 hyperlink = ((HttpServletResponse ) pageContext.getResponse()).encodeURL(node.getAction());
431
432 }
434 out.print(" <td colspan=\"");
435 out.print(width - level + 1);
436 out.print("\">");
437 if (node.getIcon() != null) {
438 if (hyperlink != null) {
439 out.print("<a HREF=\"");
440 out.print(hyperlink);
441 out.print("\"");
442 String target = node.getTarget();
443 if (target != null) {
444 out.print(" target=\"");
445 out.print(target);
446 out.print("\"");
447 }
448 out.print(" onclick=\"");
450 out.print("self.location.href='" + updateTreeAction + "'");
451 out.print("\"");
452 out.print(">");
453 }
454 out.print("<img SRC=\"");
455 out.print(images);
456 out.print("/");
457 out.print(node.getIcon());
458 out.print("\" border=\"0\">");
459 if (hyperlink != null) {
460 out.print("</a>");
461 }
462 }
463
464
466 if (node.getLabel() != null) {
467 String labelStyle = null;
468 if (node.isSelected() && (styleSelected != null)) {
469 labelStyle = styleSelected;
470 }
471 else if (!node.isSelected() && (styleUnselected != null)) {
472 labelStyle = styleUnselected;
473 }
474 if (hyperlink != null) {
475 out.print(" <a HREF=\"");
478 out.print(hyperlink);
479 out.print("\"");
480 String target = node.getTarget();
481 if (target != null) {
482 out.print(" target=\"");
483 out.print(target);
484 out.print("\"");
485 }
486 if (labelStyle != null) {
487 out.print(" class=\"");
488 out.print(labelStyle);
489 out.print("\"");
490 }
491 out.print(" onclick=\"");
493 out.print("self.location.href='" + updateTreeAction + "'");
494 out.print("\"");
495 out.print(">");
496 }
497 else if (labelStyle != null) {
498 out.print("<span class=\"");
499 out.print(labelStyle);
500 out.print("\">");
501 }
502 out.print(node.getLabel());
503 if (hyperlink != null) {
504 out.print("</a>");
505 }
506 else if (labelStyle != null) {
507 out.print("</span>");
508 }
509 }
510 out.println("</td>");
511
512 out.println(" </tr>");
514
515 if (node.isExpanded()) {
517 TreeControlNode children[] = node.findChildren();
518 int lastIndex = children.length - 1;
519 int newLevel = level + 1;
520 for (int i = 0; i < children.length; i++) {
521 render(out, children[i], newLevel, width, i == lastIndex);
522 }
523 }
524
525 }
526
527
535 protected String replace(String template, String placeholder, String value) {
536
537 if (template == null) {
538 return (null);
539 }
540 if ((placeholder == null) || (value == null)) {
541 return (template);
542 }
543 while (true) {
544 int index = template.indexOf(placeholder);
545 if (index < 0) {
546 break;
547 }
548 StringBuffer temp = new StringBuffer (template.substring(0, index));
549 temp.append(value);
550 temp.append(template.substring(index + placeholder.length()));
551 template = temp.toString();
552 }
553 return (template);
554
555 }
556
557 }
558 |
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