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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  package org.apache.myfaces.custom.ajaxchildcombobox;
20  
21  import javax.faces.application.Application;
22  import javax.faces.el.MethodBinding;
23  
24  import com.sun.facelets.FaceletContext;
25  import com.sun.facelets.tag.TagAttribute;
26  import com.sun.facelets.tag.jsf.ComponentConfig;
27  import com.sun.facelets.tag.jsf.html.HtmlComponentHandler;
28  
29  public class AjaxChildComboBoxTagHandler extends HtmlComponentHandler {
30   
31      private static final String AJAX_SELECT_ITEMS_METHOD = "ajaxSelectItemsMethod";
32      
33      private static final Class [] ajaxSelectItemsMethodParamList = new Class[]{String.class}; 
34  
35      private TagAttribute ajaxSelectItemsMethodAttr;
36      
37      public AjaxChildComboBoxTagHandler(ComponentConfig tagConfig) {
38          super(tagConfig);
39          ajaxSelectItemsMethodAttr = getAttribute(AJAX_SELECT_ITEMS_METHOD);
40      }
41  
42      protected void setAttributes(FaceletContext ctx, Object instance)
43      {
44          super.setAttributes(ctx, instance);
45          
46          Application app = ctx.getFacesContext().getApplication();
47          
48          AjaxChildComboBox comp = (AjaxChildComboBox) instance;
49          
50          if (ajaxSelectItemsMethodAttr != null){
51              String _ajaxSelectItemsMethod = ajaxSelectItemsMethodAttr.getValue();
52              if (_ajaxSelectItemsMethod != null)
53              {
54                  MethodBinding mb = app.createMethodBinding(
55                      _ajaxSelectItemsMethod, ajaxSelectItemsMethodParamList);
56                  comp.setAjaxSelectItemsMethod(mb);
57              }
58          }        
59      }
60  }