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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  
20  package org.apache.myfaces.tobago.facelets;
21  
22  import org.apache.myfaces.tobago.component.Attributes;
23  import org.apache.myfaces.tobago.event.PopupActionListener;
24  import org.apache.myfaces.tobago.event.ValueExpressionPopupActionListener;
25  
26  import javax.el.ValueExpression;
27  import javax.faces.component.ActionSource;
28  import javax.faces.component.UIComponent;
29  import javax.faces.view.facelets.ComponentHandler;
30  import javax.faces.view.facelets.FaceletContext;
31  import javax.faces.view.facelets.TagAttribute;
32  import javax.faces.view.facelets.TagConfig;
33  import javax.faces.view.facelets.TagException;
34  import javax.faces.view.facelets.TagHandler;
35  import java.io.IOException;
36  
37  public class PopupReferenceHandler extends TagHandler {
38  
39    private final TagAttribute forComponent;
40  
41    public PopupReferenceHandler(final TagConfig config) {
42      super(config);
43      forComponent = getAttribute(Attributes.FOR);
44    }
45  
46    public void apply(final FaceletContext faceletContext, final UIComponent parent) throws IOException {
47      if (parent instanceof ActionSource) {
48        if (ComponentHandler.isNew(parent)) {
49          final ActionSource actionSource = (ActionSource) parent;
50          if (forComponent.isLiteral())  {
51            actionSource.addActionListener(new PopupActionListener(forComponent.getValue()));
52          } else {
53            final ValueExpression forValueExpression = forComponent.getValueExpression(faceletContext, String.class);
54            actionSource.addActionListener(new ValueExpressionPopupActionListener(forValueExpression));
55          }
56        }
57      } else {
58        throw new TagException(tag, "Parent is not of type ActionSource, type is: " + parent);
59      }
60    }
61  }