PortletBrowseAction


1   /*
2    * Copyright 2000-2004 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  package org.apache.jetspeed.modules.actions.portlets;
17  
18  import java.util.ArrayList  ;
19  import java.util.Iterator  ;
20  import java.util.List  ;
21  
22  import org.apache.jetspeed.om.registry.MediaTypeRegistry;
23  import org.apache.jetspeed.portal.Portlet;
24  import org.apache.jetspeed.services.Registry;
25  import org.apache.jetspeed.util.PortletSessionState;
26  import org.apache.turbine.util.RunData;
27  import org.apache.velocity.context.Context;
28  
29  /**
30   * This action extends the RegistryBrowseAction to provide filtering for portlets
31   * and add extra information into the context 
32   * 
33   * @author <a HREF="mailto:jford@apache.org">Jeremy Ford</a>
34   * @version $Id: PortletBrowseAction.java,v 1.2 2004/02/23 02:56:58 jford Exp $
35   */
36  public class PortletBrowseAction extends RegistryBrowseAction
37  {
38      /**
39      * Subclasses must override this method to provide default behavior
40      * for the portlet action
41      */
42      /**
43      * Build the normal state content for this portlet.
44      *
45      * @param portlet The velocity-based portlet that is being built.
46      * @param context The velocity context for this request.
47      * @param rundata The turbine rundata context for this request.
48      */
49      protected void buildNormalContext(
50          Portlet portlet,
51          Context context,
52          RunData rundata)
53      {
54          super.buildNormalContext(portlet, context, rundata);
55  
56          List   portlets =
57              (List  ) PortletSessionState.getAttribute(portlet, rundata, RESULTS);
58  
59          List   categories = PortletFilter.buildCategoryList(portlets);
60          context.put("categories", categories);
61  
62          MediaTypeRegistry mediaTypeReg =
63              (MediaTypeRegistry) Registry.get(Registry.MEDIA_TYPE);
64  
65          ArrayList   collection = new ArrayList  ();
66          Iterator   iter = mediaTypeReg.listEntryNames();
67          while (iter.hasNext())
68          {
69              collection.add(iter.next());
70          }
71  
72          context.put("media_types", collection);
73  
74          context.put("parents", PortletFilter.buildParentList(portlets));
75      }
76  
77      /**
78       * Filter portlets by using the PortletFilter helper class
79       * 
80       * @see org.apache.jetspeed.modules.actions.portlets.RegistryBrowseAction#filter(java.util.List, java.lang.String[], java.lang.String[])
81       */
82      protected List   filter(List   entries, String  [] fields, String  [] values)
83      {
84          return PortletFilter.filterPortlets(entries, fields, values);
85      }
86  }
87
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