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1   /*
2    * Copyright 2004-2005 The Apache Software Foundation.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License")
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.apache.commons.configuration.web;
18  
19  import java.applet.Applet;
20  import java.util.Iterator;
21  import java.util.List;
22  
23  import org.apache.commons.collections.iterators.ArrayIterator;
24  import org.apache.commons.configuration.PropertyConverter;
25  
26  /***
27   * A configuration wrapper to read applet parameters. This configuration is
28   * read only, adding or removing a property will throw an
29   * UnsupportedOperationException.
30   *
31   * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
32   * @version $Revision$, $Date: 2005-10-12 21:01:43 +0200 (Wed, 12 Oct 2005) $
33   * @since 1.1
34   */
35  public class AppletConfiguration extends BaseWebConfiguration
36  {
37      /*** Stores the wrapped applet.*/
38      protected Applet applet;
39  
40      /***
41       * Create an AppletConfiguration using the initialization parameters of
42       * the specified Applet.
43       *
44       * @param applet the applet
45       */
46      public AppletConfiguration(Applet applet)
47      {
48          this.applet = applet;
49      }
50  
51      public Object getProperty(String key)
52      {
53          Object value = applet.getParameter(key);
54          List list = PropertyConverter.split((String) value, getDelimiter());
55  
56          return list.size() > 1 ? list : value;
57      }
58  
59      public Iterator getKeys()
60      {
61          String[][] paramsInfo = applet.getParameterInfo();
62          String[] keys = new String[paramsInfo != null ? paramsInfo.length : 0];
63          for (int i = 0; i < keys.length; i++)
64          {
65              keys[i] = paramsInfo[i][0];
66          }
67  
68          return new ArrayIterator(keys);
69      }
70  }