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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.util.ComponentUtils;
23  import org.apache.myfaces.tobago.validator.FileItemValidator;
24  
25  import javax.faces.view.facelets.FaceletContext;
26  import javax.faces.view.facelets.MetaRule;
27  import javax.faces.view.facelets.Metadata;
28  import javax.faces.view.facelets.MetadataTarget;
29  import javax.faces.view.facelets.TagAttribute;
30  
31  public class ContentTypeRule extends MetaRule {
32  
33    public static final ContentTypeRule INSTANCE = new ContentTypeRule();
34  
35    public Metadata applyRule(final String name, final TagAttribute attribute, final MetadataTarget metadataTarget) {
36      if ("contentType".equals(name)) {
37        return new ContentTypeRuleMapper(attribute);
38      }
39      return null;
40    }
41  
42    static final class ContentTypeRuleMapper extends Metadata {
43  
44      private final TagAttribute attribute;
45  
46      public ContentTypeRuleMapper(final TagAttribute attribute) {
47        this.attribute = attribute;
48      }
49  
50      public void applyMetadata(final FaceletContext ctx, final Object instance) {
51        final String[] components = ComponentUtils.splitList(attribute.getValue(ctx));
52        ((FileItemValidator) instance).setContentType(components);
53      }
54    }
55  }