View Javadoc

1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.portals.bridges.frameworks;
18  
19  import java.io.IOException;
20  
21  import javax.portlet.RenderRequest;
22  import javax.portlet.RenderResponse;
23  import javax.servlet.jsp.JspWriter;
24  import javax.servlet.jsp.tagext.TagSupport;
25  
26  import org.apache.portals.bridges.frameworks.model.PortletApplicationModel;
27  
28  
29  /***
30   * ForwardTag
31   * 
32   * @author <a href="mailto:taylor@apache.org">David Sean Taylor</a>
33   * @version $Id: ForwardTag.java 517068 2007-03-12 01:44:37Z ate $
34   */
35  public class ForwardTag extends TagSupport
36  {
37      private String view = null;
38      private String action = null;
39      private String forward = null;
40      
41      public int doStartTag()
42      {
43          String content;
44          try
45          {
46              RenderRequest request = (RenderRequest)
47                  pageContext.getRequest().getAttribute("javax.portlet.request");
48              RenderResponse response = (RenderResponse) 
49                  pageContext.getRequest().getAttribute("javax.portlet.response");
50              
51              if (request == null || response == null)
52              {
53                  JspWriter out = pageContext.getOut();
54                  out.print("request response not found");
55                  return SKIP_BODY;
56              }
57              PortletApplicationModel model = (PortletApplicationModel)request.getAttribute(FrameworkConstants.MODEL_TOOL);
58              if (model == null)
59              {
60                  JspWriter out = pageContext.getOut();
61                  out.print("model not found");
62                  return SKIP_BODY;
63              }
64                                                  
65              Forwarder forwarder = new Forwarder(model, request, response);
66              if (view != null)
67              {
68                  content = forwarder.getView(view).toString();
69              }
70              else if (forward != null)
71              {
72                  if (action != null)
73                  {
74                      content = forwarder.getLink(forward, action).toString();
75                  }
76                  else
77                  {
78                      content = forwarder.getLink(forward).toString();                    
79                  }
80              }
81              else
82              {
83                  content = forwarder.toString();
84              }
85              JspWriter out = pageContext.getOut();
86              out.print(content);            
87          }
88          catch (IOException e)
89          {
90              System.err.println("Error printing tag: " + e);
91          }
92          return SKIP_BODY;
93      }
94      
95      
96      /***
97       * @return Returns the action.
98       */
99      public String getAction()
100     {
101         return action;
102     }
103     /***
104      * @param action The action to set.
105      */
106     public void setAction(String action)
107     {
108         this.action = action;
109     }
110     /***
111      * @return Returns the view.
112      */
113     public String getView()
114     {
115         return view;
116     }
117     /***
118      * @param view The view to set.
119      */
120     public void setView(String view)
121     {
122         this.view = view;
123     }
124     /***
125      * @return Returns the forward.
126      */
127     public String getForward()
128     {
129         return forward;
130     }
131     /***
132      * @param forward The forward to set.
133      */
134     public void setForward(String forward)
135     {
136         this.forward = forward;
137     }
138 }