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Java > Open Source Codes > org > apache > jetspeed > util > template > JetspeedTemplateLink


1 /*
2  * Copyright 2000-2001,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */

16
17 package org.apache.jetspeed.util.template;
18
19 import org.apache.turbine.util.RunData;
20 import org.apache.turbine.util.DynamicURI;
21 import org.apache.turbine.util.template.TemplateLink;
22 import org.apache.turbine.services.pull.ApplicationTool;
23
24 import org.apache.jetspeed.portal.Portlet;
25 import org.apache.jetspeed.portal.PortletSet;
26 import org.apache.jetspeed.portal.PortletController;
27 import org.apache.jetspeed.portal.PanedPortletController;
28 import org.apache.jetspeed.om.profile.Entry;
29 import org.apache.jetspeed.om.profile.Portlets;
30
31 import org.apache.jetspeed.services.rundata.JetspeedRunData;
32 import org.apache.jetspeed.services.resources.JetspeedResources;
33
34 /**
35  * <p>A customized version of the TemplateLink which can handle portlet
36  * references.</p>
37  *
38  * <p>It is inserted into the template context by Turbine, via request tools.</p>
39  *
40  * <p>Each portlet must call setPortlet(this) on it before entering the template
41  * rendering code. This is done currently in VelocityPortlet.</p>
42  *
43  * @author <a HREF="mailto:raphael@apache.org">RaphaŽl Luta</a>
44  * @author <a HREF="mailto:sgala@apache.org">Santiago Gala</a>
45  * @version $Id: JetspeedTemplateLink.java,v 1.14 2004/02/23 03:20:46 jford Exp $
46  *
47  * @deprecated Use JetspeedBaseLink
48  */

49 public class JetspeedTemplateLink
50     extends TemplateLink implements ApplicationTool
51 {
52
53     // parameter names for the Jetspeed framework elements
54
public static final String JavaDoc PORTLET_KEY = "portlet";
55     public static final String JavaDoc ACTION_KEY = "action";
56     public static final String JavaDoc SCREEN_KEY = "screen";
57     public static final String JavaDoc TEMPLATE_KEY = "template";
58     public static final String JavaDoc PANEL_KEY = "select-panel";
59
60     /**
61      *<p>The name of the portlet for which a URL will be generated.</p>
62      */

63     private String JavaDoc portletName = null;
64
65     /**
66      *<p>Request to which we refer.</p>
67      */

68     private JetspeedRunData data = null;
69
70     /**
71      *<p>The portlet that will be used to build the reference.</p>
72      */

73     protected Portlet activePortlet = null;
74
75
76
77     /**
78      * Empty constructor.for introspection
79      */

80     public JetspeedTemplateLink()
81     {
82     }
83
84     /**
85      * Constructor.
86      *
87      * @param data A Jetspeed RunData object.
88      */

89     public JetspeedTemplateLink(RunData data)
90     {
91         super(data);
92         this.data = (JetspeedRunData)data;
93
94         String JavaDoc tmpl = this.data.getRequestedTemplate();
95         if (tmpl!=null)
96         {
97             setPage(tmpl);
98         }
99     }
100
101     /**
102      * This will initialise a JetspeedTool object that was
103      * constructed with the default constructor (ApplicationTool
104      * method).
105      *
106      * @param data assumed to be a RunData object
107      */

108     public void init(Object JavaDoc data)
109     {
110         super.init(data);
111         this.data = (JetspeedRunData)data;
112
113         String JavaDoc tmpl = this.data.getRequestedTemplate();
114         if (tmpl!=null)
115         {
116             setPage(tmpl);
117         }
118     }
119
120     /**
121      * <p> Set the portlet giving context to this Link object.</p>
122      *
123      */

124     public void setPortlet(Portlet portlet)
125     {
126         this.activePortlet=portlet;
127     }
128
129
130
131     /**
132      * Refresh method - does nothing
133      */

134     public void refresh()
135     {
136         super.refresh();
137
138         String JavaDoc tmpl = this.data.getRequestedTemplate();
139         if (tmpl!=null)
140         {
141             setPage(tmpl);
142         }
143     }
144
145     /**
146      * Return a URI that refers to the named portlet.
147      *
148      * @param portlet the name of the portlet to link to
149      * @return a DynamicURI referencing the named portlet for easy link construction in template
150      */

151     public DynamicURI forPortlet(String JavaDoc portlet)
152     {
153         this.portletName = portlet;
154         removePathInfo(getPortletKey());
155         removeQueryData(getPortletKey());
156         return addPathInfo(getPortletKey(), portlet);
157     }
158
159     /**
160      * Add a portlet reference in the link.
161      *
162      * @param portlet the name of the portlet to link to
163      * @deprecated the name is confusing. Use @see(#forPortlet()) instead.
164      * @return a DynamicURI referencing the named portlet for easy link construction in template
165      */

166     public DynamicURI setPortlet(String JavaDoc portlet)
167     {
168         return this.forPortlet( portlet );
169     }
170
171     /**
172      * @return the portlet parameter value
173      */

174     public String JavaDoc getPortlet()
175     {
176         return this.portletName;
177     }
178
179     /**
180      * @return the portlet parameter name
181      */

182     public String JavaDoc getPortletKey()
183     {
184         return PORTLET_KEY;
185     }
186
187     /**
188      * @return the action parameter name
189      */

190     public String JavaDoc getActionKey()
191     {
192         return ACTION_KEY;
193     }
194
195     /**
196      * @return the screen parameter name
197      */

198     public String JavaDoc getScreenKey()
199     {
200         return SCREEN_KEY;
201     }
202
203     /**
204      * @return the template parameter name
205      */

206     public String JavaDoc getPageKey()
207     {
208         return TEMPLATE_KEY;
209     }
210
211     /**
212      * Add a select-panel reference in the link
213      *
214      * @param portlet the name of the portlet to link to
215      * @return a self reference for easy link construction in template
216      */

217     public DynamicURI setPanel(String JavaDoc panel)
218     {
219         removePathInfo(JetspeedResources.PATH_PANEID_KEY);
220         removeQueryData(JetspeedResources.PATH_PANEID_KEY);
221         PortletController controller = activePortlet.getPortletConfig()
222                                                         .getPortletSet()
223                                                         .getController();
224
225        String JavaDoc id = null;
226
227         if (controller instanceof PanedPortletController)
228         {
229             PortletSet set = controller.getPortlets();
230             Portlet portlet = null;
231             if (null != set)
232             {
233                 portlet = set.getPortletByName(panel);
234             }
235             if (portlet != null)
236                 id = portlet.getID();
237         }
238         else
239         {
240            Portlets entry = data.getProfile().getDocument().getPortlets(panel);
241            if (entry != null)
242                id = entry.getId();
243          }
244         return addPathInfo(JetspeedResources.PATH_PANEID_KEY, id);
245     }
246
247     /**
248      * <p>Use the activePortlet to get the current Panel name (key).</p>
249      *
250      * @return the panel parameter name
251      */

252     public String JavaDoc getPanelKey()
253     {
254         String JavaDoc panelName = PANEL_KEY;
255         try
256         {
257             PortletController controller = activePortlet.getPortletConfig()
258                                                         .getPortletSet()
259                                                         .getController();
260
261             if (controller instanceof PanedPortletController)
262             {
263                 panelName=((PanedPortletController)controller).getParameterName();
264             }
265
266         }
267         catch (Exception JavaDoc e)
268         {
269             panelName = PANEL_KEY;
270         }
271
272         return panelName;
273     }
274
275     /**
276      *
277      *
278      */

279     public String JavaDoc toString()
280     {
281         String JavaDoc tmpl = this.data.getRequestedTemplate();
282         if (tmpl!=null)
283         {
284             setPage(tmpl);
285         }
286
287         String JavaDoc buf = super.toString();
288         return buf;
289     }
290
291     public DynamicURI getPortletByName(String JavaDoc portletName)
292     {
293         String JavaDoc id = null;
294         Entry entry = data.getProfile().getDocument().getEntry(portletName);
295         //Portlets pEntry = data.getProfile().getDocument().getPortletsById(entry.getId());
296
if (entry != null)
297         {
298             id = entry.getId();
299         }
300         System.out.println("js_peid:"+id);
301         return addPathInfo("js_peid", id);
302
303     }
304
305     public void clear()
306     {
307         removePathInfo();
308         removeQueryData();
309     }
310 }
311
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