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.Map;
018    
019    import javax.portlet.PortletURL;
020    import javax.portlet.RenderResponse;
021    
022    import org.apache.hivemind.util.Defense;
023    import org.apache.tapestry.IRequestCycle;
024    import org.apache.tapestry.engine.IEngineService;
025    import org.apache.tapestry.engine.ILink;
026    import org.apache.tapestry.services.impl.LinkFactoryImpl;
027    import org.apache.tapestry.util.QueryParameterMap;
028    
029    /**
030     * Extended version of {@link org.apache.tapestry.services.impl.LinkFactoryImpl} that can
031     * create generate Portlet URLs.
032     * 
033     * @author Howard M. Lewis Ship
034     * @since 4.0
035     */
036    public class PortletLinkFactoryImpl extends LinkFactoryImpl
037    {
038        private RenderResponse _renderResponse;
039    
040        private IRequestCycle _requestCycle;
041    
042        public void setRenderResponse(RenderResponse renderResponse)
043        {
044            _renderResponse = renderResponse;
045        }
046    
047        public ILink constructLink(IEngineService service, boolean post, Map parameters,
048                boolean stateful)
049        {
050            finalizeParameters(service, parameters);
051    
052            PortletURL url = _renderResponse.createActionURL();
053    
054            return new PortletLink(_requestCycle, url, new QueryParameterMap(parameters), stateful);
055        }
056    
057        public void setRequestCycle(IRequestCycle requestCycle)
058        {
059            _requestCycle = requestCycle;
060        }
061    }