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.portlet;
016    
017    import java.util.List;
018    
019    import javax.portlet.PortletConfig;
020    
021    import org.apache.hivemind.util.Defense;
022    import org.apache.tapestry.describe.DescriptionReceiver;
023    import org.apache.tapestry.web.WebActivator;
024    import org.apache.tapestry.web.WebUtils;
025    
026    /**
027     * Adapts a {@link javax.portlet.PortletConfig}  as {@link org.apache.tapestry.web.WebActivator}.
028     * 
029     * @author Howard M. Lewis Ship
030     * @since 4.0
031     */
032    public class PortletWebActivator implements WebActivator
033    {
034        private final PortletConfig _config;
035    
036        public PortletWebActivator(PortletConfig config)
037        {
038            Defense.notNull(config, "config");
039    
040            _config = config;
041        }
042    
043        public String getActivatorName()
044        {
045            return _config.getPortletName();
046        }
047    
048        public List getInitParameterNames()
049        {
050            return WebUtils.toSortedList(_config.getInitParameterNames());
051        }
052    
053        public String getInitParameterValue(String name)
054        {
055            return _config.getInitParameter(name);
056        }
057    
058        public void describeTo(DescriptionReceiver receiver)
059        {
060            receiver.describeAlternate(_config);
061        }
062    
063    }