    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
    018package org.apache.commons.configuration2.web;
    019
    020import java.applet.Applet;
    021import java.util.Arrays;
    022import java.util.Iterator;
    023
    024/**
    025 * A configuration wrapper to read applet parameters. This configuration is
    026 * read only, adding or removing a property will throw an
    027 * UnsupportedOperationException.
    028 *
    029 * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
    030 * @since 1.1
    031 */
    032public class AppletConfiguration extends BaseWebConfiguration
    033{
    034    /** Stores the wrapped applet.*/
    035    protected Applet applet;
    036
    037    /**
    038     * Create an AppletConfiguration using the initialization parameters of
    039     * the specified Applet.
    040     *
    041     * @param applet the applet
    042     */
    043    public AppletConfiguration(final Applet applet)
    044    {
    045        this.applet = applet;
    046    }
    047
    048    @Override
    049    protected Object getPropertyInternal(final String key)
    050    {
    051        return handleDelimiters(applet.getParameter(key));
    052    }
    053
    054    @Override
    055    protected Iterator<String> getKeysInternal()
    056    {
    057        final String[][] paramsInfo = applet.getParameterInfo();
    058        final 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 Arrays.asList(keys).iterator();
    065    }
    066}