001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/portal/standard/wms/control/layertree/MoveTreeNodeListener.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.wms.control.layertree;
037    
038    import java.io.IOException;
039    import java.util.ArrayList;
040    import java.util.List;
041    import java.util.Map;
042    
043    import org.deegree.enterprise.control.ajax.AbstractListener;
044    import org.deegree.enterprise.control.ajax.ResponseHandler;
045    import org.deegree.enterprise.control.ajax.WebEvent;
046    import org.deegree.framework.log.ILogger;
047    import org.deegree.framework.log.LoggerFactory;
048    import org.deegree.portal.Constants;
049    import org.deegree.portal.context.Layer;
050    import org.deegree.portal.context.LayerGroup;
051    import org.deegree.portal.context.LayerList;
052    import org.deegree.portal.context.MMLayer;
053    import org.deegree.portal.context.MapModel;
054    import org.deegree.portal.context.MapModelEntry;
055    import org.deegree.portal.context.MapModelVisitor;
056    import org.deegree.portal.context.ViewContext;
057    
058    /**
059     * TODO add class documentation here
060     * 
061     * @author <a href="mailto:name@deegree.org">Andreas Poth</a>
062     * @author last edited by: $Author: apoth $
063     * 
064     * @version $Revision: 28716 $, $Date: 2010-12-10 15:09:13 +0100 (Fr, 10 Dez 2010) $
065     */
066    public class MoveTreeNodeListener extends AbstractListener {
067    
068        private static final ILogger LOG = LoggerFactory.getLogger( MoveTreeNodeListener.class );
069    
070        /*
071         * (non-Javadoc)
072         * 
073         * @see
074         * org.deegree.enterprise.control.ajax.AbstractListener#actionPerformed(org.deegree.enterprise.control.ajax.WebEvent
075         * , org.deegree.enterprise.control.ajax.ResponseHandler)
076         */
077        @SuppressWarnings("unchecked")
078        public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
079                                throws IOException {
080    
081            Map<Object, Object> parameter = event.getParameter();
082            String node = (String) parameter.get( "node" );
083            String parentNode = (String) parameter.get( "parentNode" );
084            String beforeNode = (String) parameter.get( "beforeNode" );
085            ViewContext vc = (ViewContext) event.getSession().getAttribute( Constants.CURRENTMAPCONTEXT );
086            MapModel mapModel = vc.getGeneral().getExtension().getMapModel();
087            MapModelEntry mme = mapModel.getMapModelEntryByIdentifier( node );
088            LayerGroup parent = (LayerGroup) mapModel.getMapModelEntryByIdentifier( parentNode );
089    
090            if ( mme != null ) {
091                // update tree/map model
092                MapModelEntry antecessor = null;
093                if ( beforeNode != null && beforeNode.length() > 0) {
094                    antecessor = mapModel.getMapModelEntryByIdentifier( beforeNode );
095                    List<MapModelEntry> list = parent.getMapModelEntries();
096    
097                    for ( int i = 0; i < list.size(); i++ ) {
098                        if ( list.get( i ).equals( antecessor ) ) {
099                            if ( i > 0 ) {
100                                antecessor = list.get( i - 1 );
101                            } else {
102                                antecessor = null;
103                            }
104                            break;
105                        }
106                    }
107                }
108                mapModel.move( mme, parent, antecessor, (beforeNode != null && beforeNode.length() > 0) );
109    
110                // update WMC layer list
111                LayerList layerList = vc.getLayerList();
112                final List<Layer> layers = new ArrayList<Layer>( layerList.getLayers().length );
113                try {
114                    mapModel.walkLayerTree( new MapModelVisitor() {
115    
116                        public void visit( LayerGroup layerGroup )
117                                                throws Exception {
118                            // ignore
119                        }
120    
121                        public void visit( MMLayer layer )
122                                                throws Exception {
123                            layers.add( layer.getLayer() );
124                        }
125                    } );
126                    layerList.setLayers( layers.toArray( new Layer[layers.size()] ) );
127                    LayerBean[] beans = new LayerBean[layers.size()];
128                    for ( int i = 0; i < beans.length; i++ ) {  
129                        beans[i] = new LayerBean( layers.get( i ).getServer().getTitle(), layers.get( i ).getName(),
130                                                  layers.get( i ).getServer().getService() + " "
131                                                  + layers.get( i ).getServer().getVersion(),
132                                                  layers.get( i ).getServer().getOnlineResource().toURI().toASCIIString(),
133                                                  layers.get( i ).getFormatList().getCurrentFormat().getName() );
134                    }
135                    responseHandler.writeAndClose( false, beans );
136                } catch ( Exception e ) {
137                    LOG.logError( e );
138                    responseHandler.writeAndClose( "ERROR: " + e.getMessage() );
139                    return;
140                }
141    
142            }
143    
144        }
145    
146    }