View Javadoc

1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  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,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.myfaces.orchestra.dynaForm.jsf.component.facelets;
20  
21  import com.sun.facelets.FaceletContext;
22  import com.sun.facelets.tag.jsf.ComponentConfig;
23  import com.sun.facelets.tag.jsf.ComponentHandler;
24  import org.apache.myfaces.orchestra.dynaForm.jsf.component.DynaForm;
25  
26  import javax.faces.component.UIComponent;
27  
28  /**
29   * Facelets component-handler class for the DynaForm component. 
30   */
31  public class DynaFormHandler extends ComponentHandler
32  {
33      public DynaFormHandler(ComponentConfig tagConfig)
34      {
35          super(tagConfig);
36      }
37  
38      @Override
39      protected void onComponentPopulated(FaceletContext ctx, UIComponent c, UIComponent parent)
40      {
41          boolean resetParent = false;
42          DynaForm dynaForm = (DynaForm) c;
43          if (dynaForm.getParent() == null)
44          {
45              resetParent = true;
46              dynaForm.setParent(parent);
47          }
48          try
49          {
50              dynaForm.setELContext(ctx);
51              dynaForm.initView(ctx.getFacesContext());
52          }
53          finally
54          {
55              // ensure no one else will be able to use this ELContext afterwards
56              dynaForm.setELContext(null);
57              if (resetParent)
58              {
59                  dynaForm.setParent(null);
60              }
61          }
62      }
63  }