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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.MethodExpressionToMethodBinding;
23  import org.apache.myfaces.tobago.event.SortActionSource;
24  import org.slf4j.Logger;
25  import org.slf4j.LoggerFactory;
26  
27  import javax.faces.event.ActionEvent;
28  import javax.faces.view.facelets.FaceletContext;
29  import javax.faces.view.facelets.MetaRule;
30  import javax.faces.view.facelets.Metadata;
31  import javax.faces.view.facelets.MetadataTarget;
32  import javax.faces.view.facelets.TagAttribute;
33  
34  public class SortActionSourceRule extends MetaRule {
35  
36    private static final Logger LOG = LoggerFactory.getLogger(SortActionSourceRule.class);
37  
38    static final Class[] ACTION_LISTENER = new Class[]{ActionEvent.class};
39  
40    public static final SortActionSourceRule INSTANCE = new SortActionSourceRule();
41  
42    public Metadata applyRule(String name, TagAttribute attribute,
43        MetadataTarget metadataTarget) {
44      if (metadataTarget.isTargetInstanceOf(SortActionSource.class)) {
45        if ("sortActionListener".equals(name)) {
46          return new SortActionListenerMapper(attribute);
47        }
48      }
49      return null;
50    }
51  
52    static final class SortActionListenerMapper extends Metadata {
53  
54      private final TagAttribute attribute;
55  
56      public SortActionListenerMapper(TagAttribute attribute) {
57        this.attribute = attribute;
58      }
59  
60      public void applyMetadata(FaceletContext ctx, Object instance) {
61        LOG.error("TODO: implementation for JSF 1.2 / JSF 2.0");
62        ((SortActionSource) instance).setSortActionListener(new MethodExpressionToMethodBinding(attribute
63            .getMethodExpression(ctx, null, SortActionSourceRule.ACTION_LISTENER)));
64      }
65    }
66  
67  }