001    // Copyright 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.web;
016    
017    import java.util.List;
018    
019    import javax.servlet.http.HttpServlet;
020    
021    import org.apache.tapestry.describe.DescriptionReceiver;
022    
023    /**
024     * Adapts {@link javax.servlet.http.HttpServlet}  as
025     * {@link org.apache.tapestry.web.WebActivator}.
026     * 
027     * @author Howard M. Lewis Ship
028     * @since 4.0
029     */
030    public class HttpServletWebActivator implements WebActivator
031    {
032        private HttpServlet _httpServlet;
033    
034        public HttpServletWebActivator(HttpServlet servlet)
035        {
036            _httpServlet = servlet;
037        }
038    
039        public String getActivatorName()
040        {
041            return _httpServlet.getServletName();
042        }
043    
044        public List getInitParameterNames()
045        {
046            return WebUtils.toSortedList(_httpServlet.getInitParameterNames());
047        }
048    
049        public String getInitParameterValue(String name)
050        {
051            return _httpServlet.getInitParameter(name);
052        }
053    
054        public void describeTo(DescriptionReceiver receiver)
055        {
056            receiver.describeAlternate(_httpServlet);
057        }
058    
059    }