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.error;
016    
017    import java.io.IOException;
018    
019    import org.apache.tapestry.IPage;
020    import org.apache.tapestry.IRequestCycle;
021    import org.apache.tapestry.StaleSessionException;
022    import org.apache.tapestry.services.ResponseRenderer;
023    
024    /**
025     * Used to activate a particular page to report the
026     * {@link org.apache.tapestry.StaleSessionException}.
027     * 
028     * @author Howard M. Lewis Ship
029     * @since 4.0
030     */
031    public class StaleSessionExceptionPresenterImpl implements StaleSessionExceptionPresenter
032    {
033        private ResponseRenderer _responseRenderer;
034    
035        private String _pageName;
036    
037        public void presentStaleSessionException(IRequestCycle cycle, StaleSessionException cause)
038                throws IOException
039        {
040            IPage exceptionPage = cycle.getPage(_pageName);
041    
042            cycle.activate(exceptionPage);
043    
044            _responseRenderer.renderResponse(cycle);
045        }
046    
047        public void setPageName(String pageName)
048        {
049            _pageName = pageName;
050        }
051    
052        public void setResponseRenderer(ResponseRenderer responseRenderer)
053        {
054            _responseRenderer = responseRenderer;
055        }
056    
057    }