Source Code Cross Referenced for PageLabelManager.java in  » Content-Management-System » apache-lenya-2.0 » org » apache » cocoon » portal » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Content Management System » apache lenya 2.0 » org.apache.cocoon.portal.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         *
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:        package org.apache.cocoon.portal.impl;
018:
019:        import java.util.ArrayList;
020:        import java.util.HashMap;
021:        import java.util.List;
022:        import java.util.Map;
023:
024:        import org.apache.avalon.framework.activity.Disposable;
025:        import org.apache.avalon.framework.component.Component;
026:        import org.apache.avalon.framework.configuration.Configurable;
027:        import org.apache.avalon.framework.configuration.Configuration;
028:        import org.apache.avalon.framework.context.Context;
029:        import org.apache.avalon.framework.context.ContextException;
030:        import org.apache.avalon.framework.context.Contextualizable;
031:        import org.apache.avalon.framework.logger.AbstractLogEnabled;
032:        import org.apache.avalon.framework.service.ServiceException;
033:        import org.apache.avalon.framework.service.ServiceManager;
034:        import org.apache.avalon.framework.service.Serviceable;
035:        import org.apache.avalon.framework.thread.ThreadSafe;
036:        import org.apache.cocoon.components.ContextHelper;
037:        import org.apache.cocoon.environment.ObjectModelHelper;
038:        import org.apache.cocoon.environment.Request;
039:        import org.apache.cocoon.portal.PortalService;
040:        import org.apache.cocoon.portal.event.impl.ChangeAspectDataEvent;
041:        import org.apache.cocoon.portal.layout.CompositeLayout;
042:        import org.apache.cocoon.portal.layout.Item;
043:        import org.apache.cocoon.portal.layout.Layout;
044:        import org.apache.cocoon.portal.layout.NamedItem;
045:
046:        /**
047:         * Manages the various activities required for page labels.
048:         *
049:         * The name of the request parameter used to identify the page labelmay be configured
050:         * here by declaring
051:         * <br><parameter-name><i>request-parm-name</i></parameter-name><br>
052:         * in the configuration for this component. The default request parameter name is
053:         * 'pageLabel'.
054:         * @author Ralph Goers
055:         *
056:         * @version CVS $Id: PageLabelManager.java 603497 2007-12-12 07:29:01Z cziegeler $
057:         */
058:        public class PageLabelManager extends AbstractLogEnabled implements 
059:                ThreadSafe, Serviceable, Configurable, Contextualizable,
060:                Component, Disposable {
061:
062:            public static final String ROLE = PageLabelManager.class.getName();
063:
064:            /** The service manager */
065:            protected ServiceManager manager;
066:            /** The portal service */
067:            protected PortalService portalService;
068:            /** The cocoon context */
069:            protected Context context;
070:            protected String aspectName = null;
071:            private String requestParameterName;
072:
073:            /** boolean to determine if page label should use directory structure */
074:            private boolean useUrlPath;
075:            private boolean nonStickyTabs;
076:            private boolean marshallEvents;
077:
078:            protected static final String LABEL_ARRAY = PageLabelManager.class
079:                    .getName()
080:                    + "A";
081:            protected static final String LABEL_MAP = "page-labels";
082:            protected static final String EVENT_MAP = PageLabelManager.class
083:                    .getName()
084:                    + "E";
085:            private static final String DEFAULT_REQUEST_PARAMETER_NAME = "pageLabel";
086:
087:            /**
088:             * @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager)
089:             */
090:            public void service(ServiceManager manager) throws ServiceException {
091:                this .manager = manager;
092:                this .portalService = (PortalService) this .manager
093:                        .lookup(PortalService.ROLE);
094:            }
095:
096:            /**
097:             * @see org.apache.avalon.framework.activity.Disposable#dispose()
098:             */
099:            public void dispose() {
100:                if (this .manager != null) {
101:                    this .manager.release(this .portalService);
102:                    this .manager = null;
103:                }
104:            }
105:
106:            /* (non-Javadoc)
107:             * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
108:             */
109:            public void configure(Configuration config) {
110:                this .requestParameterName = config.getChild("parameterName")
111:                        .getValue(DEFAULT_REQUEST_PARAMETER_NAME);
112:                this .aspectName = config.getChild("aspectName").getValue("tab");
113:                this .nonStickyTabs = Boolean.valueOf(
114:                        config.getChild("nonStickyTabs").getValue("false"))
115:                        .booleanValue();
116:                this .marshallEvents = Boolean.valueOf(
117:                        config.getChild("marshallEvents").getValue("false"))
118:                        .booleanValue();
119:                this .useUrlPath = Boolean.valueOf(
120:                        config.getChild("urlPath").getValue("false"))
121:                        .booleanValue();
122:            }
123:
124:            /* (non-Javadoc)
125:             * @see org.apache.avalon.framework.context.Contextualizable#contextualize(org.apache.avalon.framework.context.Context)
126:             */
127:            public void contextualize(Context context) throws ContextException {
128:                this .context = context;
129:            }
130:
131:            /**
132:             * Return the current page label.
133:             * @return The current page label.
134:             */
135:            public String getCurrentLabel() {
136:                String[] labels = getLabels();
137:
138:                return labels[0];
139:            }
140:
141:            /**
142:             * Return the page label from the previous request.
143:             * @return The previous page label.
144:             */
145:            public String getPreviousLabel() {
146:                String[] labels = getLabels();
147:
148:                return labels[1];
149:            }
150:
151:            /**
152:             * Sets the current page label.
153:             * @return The current page label.
154:             */
155:            public String setCurrentLabel() {
156:                final Request request = ObjectModelHelper
157:                        .getRequest(ContextHelper.getObjectModel(this .context));
158:                String value;
159:                if (this .useUrlPath) {
160:                    value = request.getSitemapURI();
161:                    if (!isLabel(value)) {
162:                        value = null;
163:                    }
164:                } else {
165:                    value = request.getParameter(this .requestParameterName);
166:                }
167:
168:                String[] labels = getLabels();
169:
170:                if (value != null) {
171:                    labels[1] = labels[0];
172:                    labels[0] = value;
173:                }
174:                return labels[0];
175:            }
176:
177:            /**
178:             * Returns whether directory structure should be used
179:             * @return A boolean specifying if directory structure should be used.
180:             */
181:            public boolean isUrlPath() {
182:                return this .useUrlPath;
183:            }
184:
185:            /**
186:             * Returns the request parameter being used to identify the page label.
187:             * @return A String containing the request parameter name used for page labels.
188:             */
189:            public String getRequestParameterName() {
190:                return this .requestParameterName;
191:            }
192:
193:            /**
194:             * Return the Map that contains events for all the page labels.
195:             * @return The Map to use for converting events to and from urls.
196:             */
197:            public Map getPageEventMap() {
198:                Map map = (Map) portalService.getAttribute(EVENT_MAP);
199:                if (null == map) {
200:                    map = new HashMap();
201:                    portalService.setAttribute(EVENT_MAP, map);
202:                }
203:
204:                return map;
205:            }
206:
207:            protected Map getLabelMap() {
208:                final Layout rootLayout = portalService.getComponentManager()
209:                        .getProfileManager().getPortalLayout(null, null);
210:                Map map = (Map) rootLayout.getAspectData(LABEL_MAP);
211:                if (null == map) {
212:                    map = this .initializeLabels();
213:                    rootLayout.setAspectData(LABEL_MAP, map);
214:                }
215:                return map;
216:            }
217:
218:            /**
219:             * Retrieve the events associated with the specified page label.
220:             *
221:             * @param pageLabel The label to retrieve the events for.
222:             * @return A List containing all the events associated with the page label in the order they
223:             *         should occur.
224:             */
225:            public List getPageLabelEvents(String pageLabel) {
226:                final Map labelMap = this .getLabelMap();
227:                List list = (List) labelMap.get(pageLabel);
228:
229:                if (list == null) {
230:                    list = new ArrayList();
231:                    labelMap.put(pageLabel, list);
232:                }
233:
234:                return list;
235:            }
236:
237:            public boolean isLabel(String pageLabel) {
238:                final Map labelMap = this .getLabelMap();
239:
240:                return labelMap.containsKey(pageLabel);
241:            }
242:
243:            /**
244:             * Returns true if events are not to be exposed as request parameters
245:             */
246:            public boolean isMarshallEvents() {
247:                return this .marshallEvents;
248:            }
249:
250:            /**
251:             * Return the array containing the current and previous labels.
252:             */
253:            private String[] getLabels() {
254:                String[] labels = (String[]) portalService
255:                        .getAttribute(LABEL_ARRAY);
256:                if (null == labels) {
257:                    labels = new String[2];
258:                    labels[0] = getRoot();
259:                    portalService.setAttribute(LABEL_ARRAY, labels);
260:                }
261:                return labels;
262:            }
263:
264:            /**
265:             * Create the page label event map and return it.
266:             *
267:             * @param service The portal service
268:             * @return The page label map.
269:             */
270:            private Map initializeLabels() {
271:                final Map map = new HashMap();
272:
273:                final Layout portalLayout = portalService.getComponentManager()
274:                        .getProfileManager().getPortalLayout(null, null);
275:
276:                if (portalLayout instanceof  CompositeLayout) {
277:                    this .populate((CompositeLayout) portalLayout, map, "",
278:                            new ArrayList());
279:                }
280:
281:                return map;
282:            }
283:
284:            private String getRoot() {
285:                final Layout portalLayout = portalService.getComponentManager()
286:                        .getProfileManager().getPortalLayout(null, null);
287:
288:                if (portalLayout instanceof  CompositeLayout) {
289:                    return getRoot((CompositeLayout) portalLayout,
290:                            new StringBuffer(""));
291:                }
292:                return "";
293:            }
294:
295:            private String getRoot(CompositeLayout layout, StringBuffer root) {
296:                for (int j = 0; j < layout.getSize(); j++) {
297:                    Item tab = layout.getItem(j);
298:                    if (tab instanceof  NamedItem) {
299:                        if (root.length() > 0) {
300:                            root.append(".");
301:                        }
302:                        root.append(((NamedItem) tab).getName());
303:                        Layout child = tab.getLayout();
304:                        if (child != null && child instanceof  CompositeLayout) {
305:                            getRoot((CompositeLayout) child, root);
306:                        }
307:                        break;
308:                    }
309:                }
310:                return root.toString();
311:            }
312:
313:            /**
314:             * Populate the event map
315:             *
316:             * @param layout
317:             * @param map
318:             * @param name
319:             * @param parentEvents
320:             */
321:            private List populate(CompositeLayout layout, Map map, String name,
322:                    List parentEvents) {
323:                List lhList = null;
324:                for (int j = 0; j < layout.getSize(); j++) {
325:                    Item tab = layout.getItem(j);
326:                    ChangeAspectDataEvent event = new ChangeAspectDataEvent(
327:                            layout, this .aspectName, new Integer(j));
328:                    StringBuffer label = new StringBuffer(name);
329:                    if (label.length() > 0) {
330:                        label.append(".");
331:                    }
332:                    label.append((tab instanceof  NamedItem) ? ((NamedItem) tab)
333:                            .getName() : Integer.toString(j));
334:                    List events = new ArrayList(parentEvents);
335:                    events.add(event);
336:                    Layout child = tab.getLayout();
337:                    List allEvents = null;
338:                    if (child != null && child instanceof  CompositeLayout) {
339:                        allEvents = populate((CompositeLayout) child, map,
340:                                label.toString(), events);
341:                    }
342:                    if (this .nonStickyTabs) {
343:                        // With non-sticky tabs the non-leaf nodes always display
344:                        // the left-most child tabs
345:                        if (lhList == null) {
346:                            if (allEvents != null) {
347:                                lhList = allEvents;
348:                            } else {
349:                                lhList = events;
350:                            }
351:                        }
352:                        if (allEvents != null) {
353:                            map.put(label.toString(), allEvents);
354:                        } else {
355:                            map.put(label.toString(), events);
356:                        }
357:                    } else {
358:                        map.put(label.toString(), events);
359:                    }
360:                }
361:                return lhList;
362:            }
363:        }
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