001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/portal/standard/context/control/ResetContextListener.java $
002    /*----------------------------------------------------------------------------
003     This file is part of deegree, http://deegree.org/
004     Copyright (C) 2001-2009 by:
005       Department of Geography, University of Bonn
006     and
007       lat/lon GmbH
008    
009     This library is free software; you can redistribute it and/or modify it under
010     the terms of the GNU Lesser General Public License as published by the Free
011     Software Foundation; either version 2.1 of the License, or (at your option)
012     any later version.
013     This library is distributed in the hope that it will be useful, but WITHOUT
014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016     details.
017     You should have received a copy of the GNU Lesser General Public License
018     along with this library; if not, write to the Free Software Foundation, Inc.,
019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020    
021     Contact information:
022    
023     lat/lon GmbH
024     Aennchenstr. 19, 53177 Bonn
025     Germany
026     http://lat-lon.de/
027    
028     Department of Geography, University of Bonn
029     Prof. Dr. Klaus Greve
030     Postfach 1147, 53001 Bonn
031     Germany
032     http://www.geographie.uni-bonn.de/deegree/
033    
034     e-mail: info@deegree.org
035    ----------------------------------------------------------------------------*/
036    package org.deegree.portal.standard.context.control;
037    
038    import javax.servlet.http.HttpServletRequest;
039    import javax.servlet.http.HttpSession;
040    
041    import org.deegree.enterprise.control.FormEvent;
042    import org.deegree.framework.log.ILogger;
043    import org.deegree.framework.log.LoggerFactory;
044    import org.deegree.framework.xml.XMLFragment;
045    import org.deegree.i18n.Messages;
046    import org.deegree.portal.Constants;
047    import org.deegree.portal.context.ViewContext;
048    import org.deegree.portal.context.XMLFactory;
049    
050    /**
051     * TODO add documentation here
052     *
053     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth </a>
054     * @author last edited by: $Author: apoth $
055     *
056     * @version $Revision: 21693 $, $Date: 2010-01-03 15:07:54 +0100 (So, 03 Jan 2010) $
057     */
058    public class ResetContextListener extends AbstractContextListener {
059    
060        private static final ILogger LOG = LoggerFactory.getLogger( ResetContextListener.class );
061    
062        /*
063         * (non-Javadoc)
064         *
065         * @see org.deegree.enterprise.control.WebListener#actionPerformed(org.deegree.enterprise.control.FormEvent)
066         */
067        @Override
068        public void actionPerformed( FormEvent event ) {
069    
070            String newHtml;
071            try {
072                newHtml = doTransformContext();
073            } catch ( Exception e ) {
074                LOG.logError( e.getMessage(), e );
075                gotoErrorPage( Messages.getMessage( "IGEO_STD_CNTXT_ERROR_RESET_CNTXT", e.getMessage() ) );
076    
077                return;
078            }
079            // get the servlet path using the session
080            HttpSession session = ( (HttpServletRequest) this.getRequest() ).getSession();
081            session.setAttribute( ContextSwitchListener.NEW_CONTEXT_HTML, newHtml );
082    
083    
084        }
085    
086        /**
087         * Transforms the context into html using <code>xsl</code>.
088         *
089         * @param xsl
090         *            the transformation xml
091         * @return the transformed context
092         * @throws Exception
093         */
094        protected String doTransformContext( )
095                                throws Exception {
096    
097            HttpSession session = ( (HttpServletRequest) getRequest() ).getSession( true );
098            ViewContext vc = (ViewContext) session.getAttribute( Constants.CURRENTMAPCONTEXT );
099            XMLFragment xml = XMLFactory.export( vc );
100    
101            return transformToHtmlMapContext( xml, vc.getGeneral().getExtension().getXslt().toURI().toASCIIString() );
102        }
103    }