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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.configuration.web;
19  
20  import java.applet.Applet;
21  import java.util.Iterator;
22  import java.util.List;
23  
24  import org.apache.commons.collections.iterators.ArrayIterator;
25  import org.apache.commons.configuration.PropertyConverter;
26  
27  /***
28   * A configuration wrapper to read applet parameters. This configuration is
29   * read only, adding or removing a property will throw an
30   * UnsupportedOperationException.
31   *
32   * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
33   * @version $Revision: 439648 $, $Date: 2006-09-02 22:42:10 +0200 (Sa, 02 Sep 2006) $
34   * @since 1.1
35   */
36  public class AppletConfiguration extends BaseWebConfiguration
37  {
38      /*** Stores the wrapped applet.*/
39      protected Applet applet;
40  
41      /***
42       * Create an AppletConfiguration using the initialization parameters of
43       * the specified Applet.
44       *
45       * @param applet the applet
46       */
47      public AppletConfiguration(Applet applet)
48      {
49          this.applet = applet;
50      }
51  
52      public Object getProperty(String key)
53      {
54          Object value = applet.getParameter(key);
55          if (!isDelimiterParsingDisabled())
56          {
57              List list = PropertyConverter.split((String) value, getListDelimiter());
58              value = list.size() > 1 ? list : value;
59          }
60  
61          return value;
62      }
63  
64      public Iterator getKeys()
65      {
66          String[][] paramsInfo = applet.getParameterInfo();
67          String[] keys = new String[paramsInfo != null ? paramsInfo.length : 0];
68          for (int i = 0; i < keys.length; i++)
69          {
70              keys[i] = paramsInfo[i][0];
71          }
72  
73          return new ArrayIterator(keys);
74      }
75  }