|
1
13 package info.magnolia.cms.taglibs.util;
14
15 import info.magnolia.cms.core.Content;
16 import info.magnolia.cms.core.ContentHandler;
17 import info.magnolia.cms.core.ItemType;
18 import info.magnolia.cms.util.Resource;
19
20 import java.io.IOException  ;
21 import java.util.ArrayList ;
22 import java.util.Collection ;
23 import java.util.Iterator ;
24 import java.util.List ;
25
26 import javax.jcr.RepositoryException;
27 import javax.servlet.http.HttpServletRequest ;
28 import javax.servlet.jsp.JspException ;
29 import javax.servlet.jsp.JspWriter ;
30 import javax.servlet.jsp.tagext.TagSupport ;
31
32 import org.apache.commons.lang.StringEscapeUtils;
33 import org.apache.commons.lang.StringUtils;
34 import org.apache.commons.lang.exception.NestableRuntimeException;
35 import org.apache.log4j.Logger;
36
37
38
70 public class SimpleNavigationTag extends TagSupport {
71
72
75 private static final String NODEDATA_NAVIGATIONTITLE = "navTitle";
77
80 public static final String NODEDATA_ACCESSKEY = "accessKey";
82
85 public static final String DEFAULT_OPENMENU_NODEDATA = "openMenu";
87
90 public static final String DEFAULT_HIDEINNAV_NODEDATA = "hideInNav";
92
95 private static final long serialVersionUID = 222L;
96
97
100 private static Logger log = Logger.getLogger(SimpleNavigationTag.class);
101
102
105 private int startLevel;
106
107
110 private int endLevel;
111
112
115 private String hideInNav;
116
117
120 private String openMenu;
121
122
125 private String style;
126
127
130 private boolean expandAll;
131
132
136 public void setStartLevel(int startLevel) {
137 this.startLevel = startLevel;
138 }
139
140
144 public void setEndLevel(int endLevel) {
145 this.endLevel = endLevel;
146 }
147
148
152 public void setStyle(String style) {
153 this.style = style;
154 }
155
156
160 public void setHideInNav(String hideInNav) {
161 this.hideInNav = hideInNav;
162 }
163
164
168 public void setOpenMenu(String openMenu) {
169 this.openMenu = openMenu;
170 }
171
172
175 public void setExpandAll(boolean expandAll) {
176 this.expandAll = expandAll;
177 }
178
179
182 public int doEndTag() throws JspException {
183 Content activePage = Resource.getActivePage((HttpServletRequest ) this.pageContext.getRequest());
184 JspWriter out = this.pageContext.getOut();
185 try {
186 if (style != null) {
187 out.println("<span class=\"" + style + "\">"); }
189 drawChildren(activePage.getAncestor(this.startLevel), activePage, out);
190 if (style != null) {
191 out.println("</span>"); }
193 }
194 catch (RepositoryException e) {
195 log.error("RepositoryException caught while drawing navigation: " + e.getMessage(), e); return EVAL_PAGE;
197 }
198 catch (IOException e) {
199 throw new NestableRuntimeException(e);
201 }
202 return EVAL_PAGE;
203 }
204
205
208 public void release() {
209 this.startLevel = 0;
210 this.hideInNav = null;
211 this.openMenu = null;
212 super.release();
213 }
214
215
223 private void drawChildren(Content page, Content activePage, JspWriter out) throws IOException , RepositoryException {
224
225 Collection children = page.getChildren(ItemType.CONTENT, ContentHandler.SORT_BY_SEQUENCE);
226
227 if (children.size() == 0) {
228 return;
229 }
230
231 if (startLevel > endLevel) {
232 endLevel = 0;
233 }
234
235 out.print("<ul class=\"level"); out.print(page.getLevel());
237 out.print("\">");
239 Iterator it = children.iterator();
240 while (it.hasNext()) {
241 Content child = (Content) it.next();
242
243 if (!expandAll) {
244 if (child
245 .getNodeData(StringUtils.defaultString(this.hideInNav, DEFAULT_HIDEINNAV_NODEDATA))
246 .getBoolean()) {
247 continue;
248 }
249 }
250
251 List cssClasses = new ArrayList (3);
252
253 String title = child.getNodeData(NODEDATA_NAVIGATIONTITLE).getString(StringUtils.EMPTY);
254
255 if (StringUtils.isEmpty(title)) {
257 title = child.getTitle();
258 }
259
260 if (StringUtils.isEmpty(title)) {
262 title = child.getName();
263 }
264
265 boolean showChildren;
266 boolean self = false;
267
268 if (expandAll) {
269 showChildren = true;
270 }
271 else {
272
273 if (activePage.getHandle().equals(child.getHandle())) {
274 showChildren = true;
276 self = true;
277 cssClasses.add("active"); }
279 else {
280 showChildren = (child.getLevel() <= activePage.getAncestors().size() && activePage.getAncestor(
281 child.getLevel()).getHandle().equals(child.getHandle()));
282 }
283
284 if (!showChildren) {
285 showChildren = child.getNodeData(
286 StringUtils.defaultString(this.openMenu, DEFAULT_OPENMENU_NODEDATA)).getBoolean();
287 }
288 }
289
290 if (endLevel > 0) {
291 showChildren &= child.getLevel() < endLevel;
292 }
293
294 cssClasses.add(hasVisibleChildren(child) ? (showChildren ? "open" : "closed") : "leaf");
296 StringBuffer css = new StringBuffer (cssClasses.size() * 10);
297 Iterator iterator = cssClasses.iterator();
298 while (iterator.hasNext()) {
299 css.append(iterator.next());
300 if (iterator.hasNext()) {
301 css.append(" "); }
303 }
304
305 out.print("<li class=\""); out.print(css.toString());
307 out.print("\">");
309 if (self) {
310 out.println("<strong>"); }
312
313 String accesskey = child.getNodeData(NODEDATA_ACCESSKEY).getString(StringUtils.EMPTY);
314
315 out.print("<a HREF=\""); out.print(((HttpServletRequest ) this.pageContext.getRequest()).getContextPath());
317 out.print(child.getHandle());
318 out.print(".html\"");
320 if (StringUtils.isNotEmpty(accesskey)) {
321 out.print(" accesskey=\""); out.print(accesskey);
323 out.print("\""); }
325
326 out.print(">");
328 out.print(StringEscapeUtils.escapeHtml(title));
329 out.print(" </a>");
331 if (self) {
332 out.println("</strong>"); }
334
335 if (showChildren) {
336 drawChildren(child, activePage, out);
337 }
338 out.print("</li>"); }
340
341 out.print("</ul>"); }
343
344
350 private boolean hasVisibleChildren(Content page) {
351 Iterator it = page.getChildren().iterator();
352 if (it.hasNext() && expandAll) {
353 return true;
354 }
355 while (it.hasNext()) {
356 Content ch = (Content) it.next();
357 if (!ch.getNodeData(StringUtils.defaultString(this.hideInNav, DEFAULT_HIDEINNAV_NODEDATA)).getBoolean()) {
358 return true;
359 }
360 }
361 return false;
362 }
363
364 }
365 |
Popular Tags |
Java API By Example, From Geeks To Geeks.