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
028     * {@link org.apache.tapestry.web.WebActivator}.
029     * 
030     * @author Howard M. Lewis Ship
031     * @since 4.0
032     */
033    public class PortletWebActivator implements WebActivator
034    {
035    
036        private final PortletConfig _config;
037    
038        public PortletWebActivator(PortletConfig config)
039        {
040            Defense.notNull(config, "config");
041    
042            _config = config;
043        }
044    
045        public String getActivatorName()
046        {
047            return _config.getPortletName();
048        }
049    
050        public List getInitParameterNames()
051        {
052            return WebUtils.toSortedList(_config.getInitParameterNames());
053        }
054    
055        public String getInitParameterValue(String name)
056        {
057            return _config.getInitParameter(name);
058        }
059    
060        public void describeTo(DescriptionReceiver receiver)
061        {
062            receiver.describeAlternate(_config);
063        }
064    
065    }