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1   /*
2    * $Id: UseAttributeTei.java 471754 2006-11-06 14:55:09Z husted $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  package org.apache.struts.tiles.taglib;
23  
24  
25  import javax.servlet.jsp.tagext.TagData;
26  import javax.servlet.jsp.tagext.TagExtraInfo;
27  import javax.servlet.jsp.tagext.VariableInfo;
28  
29  
30  /**
31   * Implementation of <code>TagExtraInfo</code> for the <b>UseAttribute</b>
32   * tag, identifying the scripting object(s) to be made visible.
33   *
34   */
35  
36  public final class UseAttributeTei extends TagExtraInfo {
37  
38  
39      /**
40       * Return information about the scripting variables to be created.
41       */
42      public VariableInfo[] getVariableInfo(TagData data) {
43  
44        String classname = data.getAttributeString("classname");
45        if( classname == null )
46          classname = "java.lang.Object";
47        String id = data.getAttributeString("id");
48        if( id == null )
49          id = data.getAttributeString("name");
50  
51        return new VariableInfo[] {
52        new VariableInfo(id,
53                         classname,
54                         true,
55                         VariableInfo.AT_END)
56    };
57  
58      }
59  
60  
61  }