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.configuration2.web;
19
20 import java.applet.Applet;
21 import java.util.Arrays;
22 import java.util.Iterator;
23 import java.util.Objects;
24
25 /**
26 * A configuration wrapper to read applet parameters. This configuration is read only, adding or removing a property
27 * will throw an UnsupportedOperationException.
28 *
29 * @since 1.1
30 */
31 public class AppletConfiguration extends BaseWebConfiguration {
32
33 /** Stores the wrapped applet. */
34 protected Applet applet;
35
36 /**
37 * Create an AppletConfiguration using the initialization parameters of the specified Applet.
38 *
39 * @param applet the applet
40 */
41 public AppletConfiguration(final Applet applet) {
42 this.applet = Objects.requireNonNull(applet, "applet");
43 }
44
45 @Override
46 protected Iterator<String> getKeysInternal() {
47 final String[][] paramsInfo = applet.getParameterInfo();
48 final String[] keys = new String[paramsInfo != null ? paramsInfo.length : 0];
49 if (paramsInfo != null) {
50 for (int i = 0; i < keys.length; i++) {
51 keys[i] = paramsInfo[i][0];
52 }
53 }
54 return Arrays.asList(keys).iterator();
55 }
56
57 @Override
58 protected Object getPropertyInternal(final String key) {
59 return handleDelimiters(applet.getParameter(key));
60 }
61 }