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 javax.portlet.ActionResponse;
018    import javax.portlet.PortletRequest;
019    
020    import org.apache.tapestry.IRequestCycle;
021    import org.apache.tapestry.services.ResponseRenderer;
022    import org.apache.tapestry.services.ServiceConstants;
023    
024    /**
025     * Sets render parameters on the current {@link javax.portlet.ActionResponse} that will invoke the
026     * {@link org.apache.tapestry.portlet.RenderService} to render the (currently) active page. This
027     * reflects the Portlet API's very clear division between processing an action and rendering a
028     * response; we need to record into the implicit render URL the render service and the name of the
029     * active page.
030     * 
031     * @author Howard M. Lewis Ship
032     * @since 4.0
033     */
034    public class PortletResponseRenderer implements ResponseRenderer
035    {
036        private PortletRequest _request;
037    
038        private ActionResponse _response;
039    
040        public void renderResponse(IRequestCycle cycle)
041        {
042            String pageName = cycle.getPage().getPageName();
043    
044            _response.setRenderParameter(ServiceConstants.SERVICE, PortletConstants.RENDER_SERVICE);
045            _response.setRenderParameter(ServiceConstants.PAGE, pageName);
046            _response.setRenderParameter(PortletConstants.PORTLET_MODE, _request.getPortletMode()
047                    .toString());
048            _response.setRenderParameter(PortletConstants.WINDOW_STATE, _request.getWindowState()
049                    .toString());
050        }
051    
052        public void setResponse(ActionResponse response)
053        {
054            _response = response;
055        }
056    
057        public void setRequest(PortletRequest request)
058        {
059            _request = request;
060        }
061    }