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16 package org.apache.cocoon.portal.layout.renderer.aspect.impl;
17
18 import java.util.Collections  ;
19 import java.util.Iterator ;
20 import java.util.Map ;
21 import java.util.List ;
22 import java.util.ArrayList ;
23
24 import org.apache.avalon.framework.parameters.ParameterException;
25 import org.apache.avalon.framework.parameters.Parameters;
26 import org.apache.cocoon.portal.PortalService;
27 import org.apache.cocoon.portal.aspect.impl.DefaultAspectDescription;
28 import org.apache.cocoon.portal.event.impl.ChangeAspectDataEvent;
29 import org.apache.cocoon.portal.layout.CompositeLayout;
30 import org.apache.cocoon.portal.layout.Item;
31 import org.apache.cocoon.portal.layout.Layout;
32 import org.apache.cocoon.portal.layout.NamedItem;
33 import org.apache.cocoon.portal.layout.renderer.aspect.RendererAspectContext;
34 import org.apache.cocoon.xml.AttributesImpl;
35 import org.apache.cocoon.xml.XMLUtils;
36 import org.xml.sax.ContentHandler ;
37 import org.xml.sax.SAXException ;
38
39
113 public class TabContentAspect
114 extends CompositeContentAspect {
115
116
120 public boolean isRequired() {
121 return true;
122 }
123
124
127 public void toSAX(RendererAspectContext context,
128 Layout layout,
129 PortalService service,
130 ContentHandler handler)
131 throws SAXException {
132 if (layout instanceof CompositeLayout) {
133 TabPreparedConfiguration config = (TabPreparedConfiguration)context.getAspectConfiguration();
134
135 if ( config.rootTag ) {
136 XMLUtils.startElement(handler, config.tagName);
137 }
138
139 AttributesImpl attributes = new AttributesImpl();
140 CompositeLayout tabLayout = (CompositeLayout) layout;
141
142 Integer data = (Integer ) layout.getAspectData(config.aspectName);
144 int selected = data.intValue();
145
146 for (int j = 0; j < tabLayout.getSize(); j++) {
148 Item tab = tabLayout.getItem(j);
149 ChangeAspectDataEvent event = null;
150
151 attributes.clear();
153 if ( tab instanceof NamedItem ) {
154 attributes.addCDATAAttribute("name", String.valueOf(((NamedItem)tab).getName()));
155 }
156 if (j == selected) {
157 attributes.addCDATAAttribute("selected", "true");
158 }
159 event = new ChangeAspectDataEvent(tabLayout, config.aspectName, new Integer (j));
160 attributes.addCDATAAttribute("parameter", service.getComponentManager().getLinkService().getLinkURI(event));
161
162 final Iterator iter = tab.getParameters().entrySet().iterator();
164 while ( iter.hasNext() ) {
165 final Map.Entry entry = (Map.Entry ) iter.next();
166 attributes.addCDATAAttribute((String )entry.getKey(), (String )entry.getValue());
167 }
168
169 XMLUtils.startElement(handler, "named-item", attributes);
170 if (j == selected) {
171 this.processLayout(tab.getLayout(), service, handler);
172 if (config.includeSelected) {
173 List events = new ArrayList ();
174 events.add(event);
175 this.processNav(context, tab.getLayout(), service, handler, events);
176 }
177 } else if (config.showAllNav) {
178 List events = new ArrayList ();
179 events.add(event);
180 this.processNav(context, tab.getLayout(), service, handler, events);
181 }
182
183 XMLUtils.endElement(handler, "named-item");
185 }
186
187 if ( config.rootTag ) {
188 XMLUtils.endElement(handler, config.tagName);
189 }
190 } else {
191 throw new SAXException ("Wrong layout type, TabLayout expected: " + layout.getClass().getName());
192 }
193 }
194
195
199 public Iterator getAspectDescriptions(Object configuration) {
200 TabPreparedConfiguration pc = (TabPreparedConfiguration)configuration;
201
202 DefaultAspectDescription desc = new DefaultAspectDescription();
203 desc.setName(pc.aspectName);
204 desc.setClassName("java.lang.Integer");
205 desc.setPersistence(pc.store);
206 desc.setAutoCreate(true);
207
208 return Collections.singletonList(desc).iterator();
209 }
210
211
216 private Layout getNextLayout(PortalService service, Item tab) {
217 Layout tabLayout = tab.getLayout();
218 if (tabLayout instanceof CompositeLayout) {
219 CompositeLayout layout = (CompositeLayout)tabLayout;
220 List list = layout.getItems();
221 int size = list.size();
222 for (int i = 0; i < size; i++) {
223 if (list.get(i) instanceof NamedItem) {
224 return tabLayout;
225 }
226 }
227 }
228 Layout nextLayout = service.getEntryLayout(null);
229 if (nextLayout == null) {
230 nextLayout = tab.getLayout();
231 }
232 return nextLayout;
233 }
234
235
243 private void processNav(RendererAspectContext context,
244 Layout layout,
245 PortalService service,
246 ContentHandler handler,
247 List parentEvents)
248 throws SAXException {
249 if (layout instanceof CompositeLayout) {
250 CompositeLayout tabLayout = (CompositeLayout)layout;
251
252 if (tabLayout.getSize() == 0) {
253 return;
254 }
255 TabPreparedConfiguration config =
256 (TabPreparedConfiguration) context.getAspectConfiguration();
257 AttributesImpl attributes = new AttributesImpl();
258 boolean subNav = false;
259
260 for (int j = 0; j < tabLayout.getSize(); j++) {
262 Item tab = tabLayout.getItem(j);
263
264 attributes.clear();
266 if (tab instanceof NamedItem) {
267 if (!subNav && !config.childTagName.equals("")) {
268 XMLUtils.startElement(handler, config.childTagName);
269 subNav = true;
270 }
271 attributes.addCDATAAttribute("name",
272 String.valueOf(((NamedItem) tab).getName()));
273 ChangeAspectDataEvent event = new ChangeAspectDataEvent(tabLayout,
274 config.aspectName, new Integer (j));
275 List events = new ArrayList (parentEvents);
276 events.add(event);
277
278 attributes.addCDATAAttribute("parameter",
279 service.getComponentManager().getLinkService().getLinkURI(events));
280
281 final Iterator iter = tab.getParameters().entrySet().iterator();
283 while (iter.hasNext()) {
284 final Map.Entry entry = (Map.Entry ) iter.next();
285 attributes.addCDATAAttribute((String ) entry.getKey(),
286 (String ) entry.getValue());
287 }
288
289 XMLUtils.startElement(handler, "named-item", attributes);
290
291 this.processNav(context, tab.getLayout(), service, handler, events);
292
293 XMLUtils.endElement(handler, "named-item");
295 }
296
297
298 }
299 if (subNav) {
301 XMLUtils.endElement(handler, config.childTagName);
302 }
303 }
304 }
305
306 protected class TabPreparedConfiguration extends PreparedConfiguration {
307 public String aspectName;
308 public String store;
309 public boolean showAllNav = false;
310 public boolean includeSelected = false;
311 public String childTagName;
312
313 public void takeValues(TabPreparedConfiguration from) {
314 super.takeValues(from);
315 this.aspectName = from.aspectName;
316 this.store = from.store;
317 this.showAllNav = from.showAllNav;
318 this.includeSelected = from.includeSelected;
319 this.childTagName = from.childTagName;
320 }
321 }
322
323
326 public Object prepareConfiguration(Parameters configuration)
327 throws ParameterException {
328 TabPreparedConfiguration pc = new TabPreparedConfiguration();
329 pc.takeValues((PreparedConfiguration)super.prepareConfiguration(configuration));
330 pc.aspectName = configuration.getParameter("aspect-name", "tab");
331 pc.store = configuration.getParameter("store");
332 pc.childTagName = configuration.getParameter("child-tag-name", "");
333 if (!pc.childTagName.equals("")) {
334 pc.showAllNav = true;
335 } else {
336 pc.showAllNav = configuration.getParameterAsBoolean("show-all-nav", false);
337 }
338 pc.includeSelected = configuration.getParameterAsBoolean("include-selected", false);
339 return pc;
340 }
341
342 }
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