001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.configuration.web;
019    
020    import java.applet.Applet;
021    import java.util.Iterator;
022    
023    import org.apache.commons.collections.iterators.ArrayIterator;
024    
025    /**
026     * A configuration wrapper to read applet parameters. This configuration is
027     * read only, adding or removing a property will throw an
028     * UnsupportedOperationException.
029     *
030     * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
031     * @version $Revision: 515306 $, $Date: 2007-03-06 22:15:00 +0100 (Di, 06. Mrz 2007) $
032     * @since 1.1
033     */
034    public class AppletConfiguration extends BaseWebConfiguration
035    {
036        /** Stores the wrapped applet.*/
037        protected Applet applet;
038    
039        /**
040         * Create an AppletConfiguration using the initialization parameters of
041         * the specified Applet.
042         *
043         * @param applet the applet
044         */
045        public AppletConfiguration(Applet applet)
046        {
047            this.applet = applet;
048        }
049    
050        public Object getProperty(String key)
051        {
052            return handleDelimiters(applet.getParameter(key));
053        }
054    
055        public Iterator getKeys()
056        {
057            String[][] paramsInfo = applet.getParameterInfo();
058            String[] keys = new String[paramsInfo != null ? paramsInfo.length : 0];
059            for (int i = 0; i < keys.length; i++)
060            {
061                keys[i] = paramsInfo[i][0];
062            }
063    
064            return new ArrayIterator(keys);
065        }
066    }