001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/portal/standard/wmps/PrintWMPSListener.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.wmps;
037
038 import java.io.IOException;
039 import java.io.InputStream;
040 import java.net.URL;
041 import java.util.ArrayList;
042 import java.util.Collections;
043 import java.util.Iterator;
044 import java.util.List;
045 import java.util.Map;
046
047 import org.deegree.enterprise.control.ajax.AbstractListener;
048 import org.deegree.enterprise.control.ajax.ResponseHandler;
049 import org.deegree.enterprise.control.ajax.WebEvent;
050 import org.deegree.framework.log.ILogger;
051 import org.deegree.framework.log.LoggerFactory;
052 import org.deegree.framework.util.HttpUtils;
053 import org.deegree.framework.xml.NamespaceContext;
054 import org.deegree.framework.xml.XMLFragment;
055 import org.deegree.framework.xml.XMLTools;
056 import org.deegree.i18n.Messages;
057 import org.deegree.model.spatialschema.Envelope;
058 import org.deegree.model.spatialschema.GeometryFactory;
059 import org.deegree.model.spatialschema.Point;
060 import org.deegree.ogcbase.CommonNamespaces;
061 import org.deegree.portal.Constants;
062 import org.deegree.portal.context.Layer;
063 import org.deegree.portal.context.ViewContext;
064 import org.w3c.dom.Element;
065 import org.xml.sax.SAXException;
066
067 /**
068 * TODO add class documentation here
069 *
070 * @author <a href="mailto:name@deegree.org">Andreas Poth</a>
071 * @author last edited by: $Author: apoth $
072 *
073 * @version $Revision: 24932 $, $Date: 2010-06-17 20:16:34 +0200 (Do, 17. Jun 2010) $
074 */
075 public class PrintWMPSListener extends AbstractListener {
076
077 private static final ILogger LOG = LoggerFactory.getLogger( PrintWMPSListener.class );
078
079 private static NamespaceContext nsc = CommonNamespaces.getNamespaceContext();
080
081 /*
082 * (non-Javadoc)
083 *
084 * @see
085 * org.deegree.enterprise.control.ajax.AbstractListener#actionPerformed(org.deegree.enterprise.control.ajax.WebEvent
086 * , org.deegree.enterprise.control.ajax.ResponseHandler)
087 */
088 @SuppressWarnings("unchecked")
089 public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
090 throws IOException {
091 String wmpsAddr = getInitParameter( "WMPS" );
092 List<Layer> visibleLayers = getVisibleLayers( event );
093 // read parameters from request
094 Map<String, Object> parameters = event.getParameter();
095 int dpi = Integer.parseInt( (String) parameters.get( "dpi" ) );
096 boolean legend = new Boolean( (String) parameters.get( "legend" ) );
097 boolean scaleBar = new Boolean( (String) parameters.get( "scale" ) );
098 String template = (String) parameters.get( "template" );
099 String email = (String) parameters.get( "email" );
100 int scaleValue = Integer.parseInt( (String) parameters.get( "scaleValue" ) );
101 String tmp = (String) parameters.get( "bbox" );
102 Envelope bbox = GeometryFactory.createEnvelope( tmp, null );
103 String srs = (String) parameters.get( "srs" );
104 List<Map<String, String>> fields = (List<Map<String, String>>) parameters.get( "fields" );
105 Map<String, String> fieldMap = (Map<String, String>) fields.get( 0 );
106
107 // create PrintMap request using printmap_template.xml as template
108 XMLFragment printMap = createRequest( visibleLayers, dpi, legend, scaleBar, template, email, scaleValue, bbox,
109 srs, fieldMap );
110
111 LOG.logDebug( printMap.getAsPrettyString() );
112
113 // reading initial response from WMPS
114 InputStream is = HttpUtils.performHttpPost( wmpsAddr, printMap.getAsString(), timeout, null, null, "text/xml",
115 null, null ).getResponseBodyAsStream();
116 XMLFragment xml = new XMLFragment();
117 try {
118 xml.load( is, wmpsAddr );
119 } catch ( Exception e ) {
120 LOG.logError( e );
121 }
122 if ( CommonNamespaces.DEEGREEWMPS.toASCIIString().equals( xml.getRootElement().getNamespaceURI() ) ) {
123 responseHandler.writeAndClose( Messages.getMessage( "IGEO_STD_WMPS_REQ_RECEIVED" ) );
124 } else {
125 LOG.logError( xml.getAsPrettyString() );
126 responseHandler.writeAndClose( Messages.getMessage( "IGEO_STD_WMPS_REQ_ERROR" ) );
127 }
128 }
129
130 /**
131 * @param visibleLayers
132 * @param dpi
133 * @param legend
134 * @param scaleBar
135 * @param template
136 * @param email
137 * @param scaleValue
138 * @param bbox
139 * @param srs
140 * @param fieldMap
141 * @return
142 * @throws IOException
143 */
144 private XMLFragment createRequest( List<Layer> visibleLayers, int dpi, boolean legend, boolean scaleBar,
145 String template, String email, int scaleValue, Envelope bbox, String srs,
146 Map<String, String> fieldMap )
147 throws IOException {
148 URL url = PrintWMPSListener.class.getResource( "printmap_template.xml" );
149 XMLFragment printMap = null;
150 try {
151 printMap = new XMLFragment( url );
152 } catch ( SAXException e ) {
153 LOG.logError( e );
154 throw new IOException( "can not parse PrintMap template" );
155 }
156
157 try {
158 // set bounding box and SRS
159 Element element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(),
160 "deegreewmps:Center/gml:pos", nsc );
161 Point center = bbox.getCentroid();
162 XMLTools.setNodeValue( element, center.getX() + " " + center.getY() );
163 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:Center", nsc );
164 element.setAttribute( "srsName", srs );
165
166 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:ScaleDenominator",
167 nsc );
168 XMLTools.setNodeValue( element, Integer.toString( scaleValue ) );
169
170 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:Legend", nsc );
171 XMLTools.setNodeValue( element, Boolean.toString( legend ) );
172
173 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:ScaleBar", nsc );
174 XMLTools.setNodeValue( element, Boolean.toString( scaleBar ) );
175
176 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:Template", nsc );
177 XMLTools.setNodeValue( element, template );
178
179 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:EMailAddress", nsc );
180 XMLTools.setNodeValue( element, email );
181
182 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:DPI", nsc );
183 XMLTools.setNodeValue( element, Integer.toString( dpi ) );
184
185 // set layers to be printed
186 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:Layers", nsc );
187 for ( Layer layer : visibleLayers ) {
188 Element nl = XMLTools.appendElement( element, CommonNamespaces.SLDNS, "NamedLayer" );
189 Element l = XMLTools.appendElement( nl, CommonNamespaces.SLDNS, "Name" );
190 XMLTools.setNodeValue( l, layer.getName() );
191 Element nst = XMLTools.appendElement( nl, CommonNamespaces.SLDNS, "NamedStyle" );
192 Element st = XMLTools.appendElement( nst, CommonNamespaces.SLDNS, "Name" );
193 XMLTools.setNodeValue( st, layer.getStyleList().getCurrentStyle().getName() );
194 }
195
196 // set free defined text areas
197 element = (Element) XMLTools.getRequiredNode( printMap.getRootElement(), "deegreewmps:TextAreas", nsc );
198 Iterator<String> iter = fieldMap.keySet().iterator();
199 while ( iter.hasNext() ) {
200 String key = (String) iter.next();
201 String value = fieldMap.get( key );
202 if ( value != null && value.trim().length() > 0 ) {
203 Element ta = XMLTools.appendElement( element, CommonNamespaces.DEEGREEWMPS, "TextArea" );
204 Element name = XMLTools.appendElement( ta, CommonNamespaces.DEEGREEWMPS, "Name" );
205 XMLTools.setNodeValue( name, key );
206 Element text = XMLTools.appendElement( ta, CommonNamespaces.DEEGREEWMPS, "Text" );
207 XMLTools.setNodeValue( text, value );
208 }
209 }
210 } catch ( Exception e ) {
211 LOG.logError( e );
212 throw new IOException( "can not set request values" );
213 }
214
215 return printMap;
216 }
217
218 private List<Layer> getVisibleLayers( WebEvent event ) {
219 ViewContext vc = (ViewContext) event.getSession().getAttribute( Constants.CURRENTMAPCONTEXT );
220 Layer[] layers = vc.getLayerList().getLayers();
221 List<Layer> visibleLayers = new ArrayList<Layer>();
222 for ( Layer layer : layers ) {
223 if ( !layer.isHidden() ) {
224 visibleLayers.add( layer );
225 }
226 }
227 Collections.reverse( visibleLayers );
228 return visibleLayers;
229 }
230
231 }