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16 package org.apache.cocoon.portal.acting;
17
18 import java.io.IOException  ;
19 import java.util.ArrayList ;
20 import java.util.Enumeration ;
21 import java.util.HashMap ;
22 import java.util.Iterator ;
23 import java.util.List ;
24 import java.util.Map ;
25
26 import org.apache.avalon.framework.configuration.Configuration;
27 import org.apache.avalon.framework.configuration.ConfigurationException;
28 import org.apache.avalon.framework.configuration.SAXConfigurationHandler;
29 import org.apache.avalon.framework.parameters.ParameterException;
30 import org.apache.avalon.framework.parameters.Parameterizable;
31 import org.apache.avalon.framework.parameters.Parameters;
32 import org.apache.avalon.framework.service.ServiceException;
33 import org.apache.avalon.framework.thread.ThreadSafe;
34 import org.apache.cocoon.ProcessingException;
35 import org.apache.cocoon.acting.ServiceableAction;
36 import org.apache.cocoon.components.source.SourceUtil;
37 import org.apache.cocoon.environment.ObjectModelHelper;
38 import org.apache.cocoon.environment.Redirector;
39 import org.apache.cocoon.environment.Request;
40 import org.apache.cocoon.environment.Session;
41 import org.apache.cocoon.environment.SourceResolver;
42 import org.apache.cocoon.portal.PortalService;
43 import org.apache.cocoon.portal.acting.helpers.CopletMapping;
44 import org.apache.cocoon.portal.acting.helpers.FullScreenMapping;
45 import org.apache.cocoon.portal.acting.helpers.LayoutMapping;
46 import org.apache.cocoon.portal.acting.helpers.Mapping;
47 import org.apache.excalibur.source.Source;
48 import org.xml.sax.SAXException ;
49
50
71 public class BookmarkAction
72 extends ServiceableAction
73 implements ThreadSafe, Parameterizable {
74
75 protected Map eventMap = new HashMap ();
76
77 protected String historyParameterName;
78
79 protected String configurationFile;
80
81
84 public void parameterize(Parameters parameters) throws ParameterException {
85 this.historyParameterName = parameters.getParameter("history-parameter-name", "history");
86 this.configurationFile = parameters.getParameter("src", null);
87 if ( this.configurationFile == null ) return;
88
89 if (!parameters.getParameterAsBoolean("lazy-load", false)) {
95 loadConfig();
96 }
97 }
98
99 private void loadConfig() throws ParameterException {
100 Configuration config;
101 org.apache.excalibur.source.SourceResolver resolver = null;
102 try {
103 resolver = (org.apache.excalibur.source.SourceResolver) this.manager.lookup(org.apache.excalibur.source.SourceResolver.ROLE);
104 Source source = null;
105 try {
106 source = resolver.resolveURI(configurationFile);
107 SAXConfigurationHandler handler = new SAXConfigurationHandler();
108 SourceUtil.toSAX(source, handler);
109 config = handler.getConfiguration();
110 } catch (ProcessingException se) {
111 throw new ParameterException("Unable to read configuration from " + configurationFile, se);
112 } catch (SAXException se) {
113 throw new ParameterException("Unable to read configuration from " + configurationFile, se);
114 } catch (IOException ioe) {
115 throw new ParameterException("Unable to read configuration from " + configurationFile, ioe);
116 } finally {
117 resolver.release(source);
118 }
119 } catch (ServiceException se) {
120 throw new ParameterException("Unable to lookup source resolver.", se);
121 } finally {
122 this.manager.release(resolver);
123 }
124 Configuration[] events = config.getChild("events").getChildren("event");
125 if ( events != null ) {
126 for(int i=0; i<events.length;i++) {
127 try {
128 final String type = events[i].getAttribute("type");
129 final String id = events[i].getAttribute("id");
130 if ( "jxpath".equals(type) ) {
131 if ( this.eventMap.containsKey(id)) {
132 throw new ParameterException("The id for the event " + id + " is not unique.");
133 }
134 final String targetType = events[i].getChild("targettype").getValue();
135 final String targetId = events[i].getChild("targetid").getValue();
136 final String path = events[i].getChild("path").getValue();
137 if ( "layout".equals(targetType) ) {
138 LayoutMapping mapping = new LayoutMapping();
139 mapping.layoutId = targetId;
140 mapping.path = path;
141 this.eventMap.put(id, mapping);
142 } else if ( "coplet".equals(targetType) ) {
143 CopletMapping mapping = new CopletMapping();
144 mapping.copletId = targetId;
145 mapping.path = path;
146 this.eventMap.put(id, mapping);
147 } else {
148 throw new ParameterException("Unknown target type " + targetType);
149 }
150 } else if ( "fullscreen".equals(type) ) {
151 if ( this.eventMap.containsKey(id)) {
152 throw new ParameterException("The id for the event " + id + " is not unique.");
153 }
154 final String targetId = events[i].getChild("targetid").getValue();
155 final String layoutId = events[i].getChild("layoutid").getValue();
156 FullScreenMapping mapping = new FullScreenMapping();
157 mapping.copletId = targetId;
158 mapping.layoutId = layoutId;
159 this.eventMap.put(id, mapping);
160 } else {
161 throw new ParameterException("Unknown event type for event " + id + ": " + type);
162 }
163 } catch (ConfigurationException ce) {
164 throw new ParameterException("Configuration exception" ,ce);
165 }
166 }
167 }
168
169 this.configurationFile = null;
171 }
172
173 public Map act(Redirector redirector,
174 SourceResolver resolver,
175 Map objectModel,
176 String source,
177 Parameters par)
178 throws Exception {
179 if (this.getLogger().isDebugEnabled() ) {
180 this.getLogger().debug("BEGIN act resolver="+resolver+
181 ", objectModel="+objectModel+
182 ", source="+source+
183 ", par="+par);
184 }
185
186 if (this.configurationFile != null) {
187 loadConfig();
188 }
189
190 Map result;
191 PortalService service = null;
192 try {
193 service = (PortalService)this.manager.lookup(PortalService.ROLE);
194
195 service.getComponentManager().getPortalManager().process();
196
197 final Request request = ObjectModelHelper.getRequest(objectModel);
198 final Session session = request.getSession(false);
199 final List events = new ArrayList ();
200
201 final String historyValue = request.getParameter(this.historyParameterName);
203 if ( historyValue != null && session != null) {
204 final List history = (List )session.getAttribute("portal-history");
206 if ( history != null ) {
207 final int index = Integer.parseInt(historyValue);
208 final List state = (List )history.get(index);
209 if ( state != null ) {
210 final Iterator iter = state.iterator();
211 while ( iter.hasNext() ) {
212 Mapping m = (Mapping)iter.next();
213 events.add(m.getEvent(service, null));
214 }
215 while (history.size() > index ) {
216 history.remove(history.size()-1);
217 }
218 }
219 }
220 }
221 Enumeration enumeration = request.getParameterNames();
222 while (enumeration.hasMoreElements()) {
223 String name = (String )enumeration.nextElement();
224 String value = request.getParameter(name);
225
226 Mapping m = (Mapping) this.eventMap.get(name);
227 if ( m != null ) {
228 events.add(m.getEvent(service, value));
229 }
230 }
231 String uri = service.getComponentManager().getLinkService().getLinkURI(events);
232 result = new HashMap ();
233 result.put("uri", uri.substring(uri.indexOf('?')+1));
234
235 } catch (ServiceException ce) {
236 throw new ProcessingException("Unable to lookup portal service.", ce);
237 } finally {
238 this.manager.release(service);
239 }
240
241 if (this.getLogger().isDebugEnabled() ) {
242 this.getLogger().debug("END act map={}");
243 }
244
245 return result;
246 }
247
248 }
249 |
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