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Java > Open Source Codes > org > apache > jetspeed > services > jsp > tags > JetspeedPaneTag


1 package org.apache.jetspeed.services.jsp.tags;
2
3 /*
4  * Copyright 2000-2001,2004 The Apache Software Foundation.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */

18
19 //import java.util.*;
20
import javax.servlet.jsp.JspException JavaDoc;
21 import javax.servlet.jsp.PageContext JavaDoc;
22 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
23
24 // Turbine Classes
25
import org.apache.turbine.services.jsp.JspService;
26
27 import org.apache.ecs.ConcreteElement;
28
29 // Jetspeed classes
30
import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
31 import org.apache.jetspeed.services.logging.JetspeedLogger;
32 import org.apache.jetspeed.services.resources.JetspeedResources;
33 import org.apache.jetspeed.services.rundata.JetspeedRunData;
34 import org.apache.jetspeed.util.template.JetspeedTool;
35
36 /**
37  * Supporting class for the pane tag.
38  * Builds the output of a PSML config file and insert it within the
39  * current JSP page
40  *
41  * @author <a HREF="mailto:raphael@apache.org">RaphaŽl Luta</a>
42  * @author <a HREF="mailto:morciuch@apache.org">Mark Orciuch</a>
43  * @version $Id: JetspeedPaneTag.java,v 1.6 2004/02/23 03:59:40 jford Exp $
44  */

45 public class JetspeedPaneTag extends TagSupport JavaDoc
46 {
47     /**
48      * Static initialization of the logger for this class
49      */

50     private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(JetspeedPaneTag.class.getName());
51     
52     private String JavaDoc name = null;
53
54     public void setName(String JavaDoc name)
55     {
56         this.name = name;
57     }
58     
59     public String JavaDoc getName()
60     {
61         return this.name;
62     }
63    
64     /**
65      * Method called when the tag is encountered to send attributes to the
66      * output stream
67      *
68      * @return SKIP_BODY, as it is intended to be a single tag.
69      */

70     public int doStartTag() throws JspException JavaDoc
71     {
72         JetspeedRunData data = (JetspeedRunData) pageContext.getAttribute(JspService.RUNDATA, PageContext.REQUEST_SCOPE);
73         
74         // retrieve the name attribute val
75
if (this.name == null)
76         {
77             this.name = JetspeedResources.getString("screen.homepage");
78         }
79             
80         try
81         {
82             pageContext.getOut().flush();
83
84             ConcreteElement result = new ConcreteElement();
85
86             if (data != null && data.getUser() != null)
87             {
88                 JetspeedTool jt = new JetspeedTool(data);
89                 String JavaDoc jspeid = (String JavaDoc) data.getUser().getTemp("js_peid");
90                 if (jspeid != null)
91                 {
92                     data.setMode(JetspeedRunData.MAXIMIZE);
93                     result = jt.getPortletById(jspeid);
94                 }
95                 else
96                 {
97                     result = jt.getPane(this.name);
98                 }
99             }
100         
101             // Check whether this is an "old" screen (that returns a ConcreteElement)
102
// or a "new" one that returns null.
103
if (result != null)
104             {
105                 //The ECS element must serialize in the character encoding
106
// of the response
107
result.setCodeSet(data.getResponse().getCharacterEncoding());
108
109                 result.output(data.getResponse().getWriter());
110             }
111
112         }
113         catch (Exception JavaDoc e)
114         {
115             String JavaDoc message = "Error processing name '" + name + "'.";
116             logger.error(message, e);
117             try
118             {
119                 data.getOut().print("Error processing ecs screen '" + name + "'. See log for more information.");
120             }
121             catch (java.io.IOException JavaDoc ioe)
122             {
123             }
124         }
125         return SKIP_BODY;
126     }
127 }
128
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