001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/portal/standard/wms/control/layertree/SetVisibilityTreeNodeListener.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.portal.Constants;
047 import org.deegree.portal.context.Layer;
048 import org.deegree.portal.context.LayerGroup;
049 import org.deegree.portal.context.MapModel;
050 import org.deegree.portal.context.MapModelEntry;
051 import org.deegree.portal.context.ViewContext;
052
053 /**
054 * TODO add class documentation here
055 *
056 * @author <a href="mailto:name@deegree.org">Andreas Poth</a>
057 * @author last edited by: $Author: apoth $
058 *
059 * @version $Revision: 20972 $, $Date: 2009-11-23 16:53:52 +0100 (Mo, 23. Nov 2009) $
060 */
061 public class SetVisibilityTreeNodeListener extends AbstractListener {
062
063 /*
064 * (non-Javadoc)
065 *
066 * @see
067 * org.deegree.enterprise.control.ajax.AbstractListener#actionPerformed(org.deegree.enterprise.control.ajax.WebEvent
068 * , org.deegree.enterprise.control.ajax.ResponseHandler)
069 */
070 @SuppressWarnings("unchecked")
071 public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
072 throws IOException {
073 Map<Object, Object> parameter = event.getParameter();
074 String node = (String) parameter.get( "node" );
075 boolean hidden = (Boolean) parameter.get( "hidden" );
076 ViewContext vc = (ViewContext) event.getSession().getAttribute( Constants.CURRENTMAPCONTEXT );
077 MapModel mapModel = vc.getGeneral().getExtension().getMapModel();
078 MapModelEntry mme = mapModel.getMapModelEntryByIdentifier( node );
079 if ( mme != null ) {
080 mme.setHidden( hidden );
081 if ( mme instanceof LayerGroup ) {
082 recurseDown( hidden, (LayerGroup) mme );
083 }
084 recurseUp( mme );
085 }
086 List<String> visibleLayers = new ArrayList<String>();
087 Layer[] layers = vc.getLayerList().getLayers();
088 for ( Layer layer : layers ) {
089 if ( !layer.isHidden() ) {
090 visibleLayers.add( layer.getName() );
091 }
092 }
093 String[] tmp = visibleLayers.toArray( new String[visibleLayers.size()] );
094 responseHandler.writeAndClose( false, tmp );
095 }
096
097 /**
098 * @param mme
099 */
100 private void recurseUp( MapModelEntry mme ) {
101 LayerGroup layerGroup = mme.getParent();
102 if ( layerGroup != null ) {
103 List<MapModelEntry> list = layerGroup.getMapModelEntries();
104 boolean visible = false;
105 for ( MapModelEntry mapModelEntry : list ) {
106 if ( !mapModelEntry.isHidden() ) {
107 visible = true;
108 break;
109 }
110 }
111 layerGroup.setHidden( !visible );
112 recurseUp( layerGroup );
113 }
114 }
115
116 /**
117 *
118 * @param hidden
119 * @param layerGroup
120 */
121 private void recurseDown( boolean hidden, LayerGroup layerGroup ) {
122 List<MapModelEntry> list = layerGroup.getMapModelEntries();
123 for ( int i = 0; i < list.size(); i++ ) {
124 MapModelEntry mapModelEntry = list.get( i );
125 mapModelEntry.setHidden( hidden );
126 if ( mapModelEntry instanceof LayerGroup ) {
127 recurseDown( hidden, (LayerGroup) mapModelEntry );
128 }
129 }
130 }
131
132 }