001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/portal/PortalUtils.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;
037
038 import java.net.URL;
039 import java.net.URLEncoder;
040 import java.util.ArrayList;
041 import java.util.Iterator;
042 import java.util.List;
043
044 import org.deegree.framework.log.ILogger;
045 import org.deegree.framework.log.LoggerFactory;
046 import org.deegree.framework.util.CharsetUtils;
047 import org.deegree.model.spatialschema.Point;
048 import org.deegree.ogcwebservices.OWSUtils;
049 import org.deegree.ogcwebservices.wms.operation.GetMap;
050 import org.deegree.portal.context.Format;
051 import org.deegree.portal.context.GeneralExtension;
052 import org.deegree.portal.context.Layer;
053 import org.deegree.portal.context.LayerExtension;
054 import org.deegree.portal.context.LayerList;
055 import org.deegree.portal.context.Node;
056 import org.deegree.portal.context.ViewContext;
057
058 /**
059 *
060 *
061 *
062 * @version $Revision: 18195 $
063 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
064 * @author last edited by: $Author: mschneider $
065 *
066 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
067 *
068 * @since 2.0
069 */
070 public class PortalUtils {
071
072 private static final ILogger LOG = LoggerFactory.getLogger( PortalUtils.class );
073
074 /**
075 * returns a comma seperated list of layers marked as sensible for feature info requestes
076 *
077 * @param vc
078 * @return a comma seperated list of layers marked as sensible for feature info requestes
079 */
080 public static List<String> getFeatureInfoLayers( ViewContext vc ) {
081 List<String> list = new ArrayList<String>();
082 LayerList layerList = vc.getLayerList();
083 Layer[] layers = layerList.getLayers();
084 for ( int i = 0; i < layers.length; i++ ) {
085 if ( layers[i].getExtension() != null && layers[i].getExtension().isSelectedForQuery() ) {
086 list.add( layers[i].getName() );
087 }
088 }
089 return list;
090 }
091
092 /**
093 * returns a comma separated list of visible layers
094 *
095 * @param vc
096 * @return a comma separated list of visible layers
097 */
098 public static List<String[]> getVisibleLayers( ViewContext vc ) {
099 List<String[]> list = new ArrayList<String[]>();
100 LayerList layerList = vc.getLayerList();
101 Layer[] layers = layerList.getLayers();
102 for ( int i = 0; i < layers.length; i++ ) {
103 if ( !layers[i].isHidden() ) {
104 String[] s = new String[2];
105 s[0] = layers[i].getName();
106 s[1] = layers[i].getServer().getOnlineResource().toExternalForm();
107 list.add( s );
108 }
109 }
110 return list;
111 }
112
113 /**
114 * returns true if at least one layer of the passed server is visible
115 *
116 * @param vc
117 * @param serverTitle
118 * @return <code>true</code> if at least one layer of the passed server is visible
119 */
120 public static boolean hasServerVisibleLayers( ViewContext vc, String serverTitle ) {
121 LayerList layerList = vc.getLayerList();
122 Layer[] layers = layerList.getLayers();
123 for ( int i = 0; i < layers.length; i++ ) {
124 if ( layers[i].getServer().getTitle().equals( serverTitle ) && !layers[i].isHidden() ) {
125 return true;
126 }
127 }
128 return false;
129 }
130
131 /**
132 * returns true if at least one layer within the node is visible
133 *
134 * @param vc
135 * @param nodeID
136 * @return <code>true</code> if at least one layer of the passed server is visible
137 */
138 public static boolean hasNodeVisibleLayers( ViewContext vc, int nodeID ) {
139 Layer[] layers = vc.getLayerList().getLayersByNodeId( nodeID );
140 for ( Layer layer : layers ) {
141 if ( !layer.isHidden() ) {
142 return true;
143 }
144 }
145 Node[] nodes = vc.getGeneral().getExtension().getLayerTreeRoot().getNode( nodeID ).getNodes();
146 for ( Node node : nodes ) {
147 if ( hasNodeVisibleLayers( vc, node.getId() ) ) {
148 return true;
149 }
150 }
151 return false;
152 }
153
154 /**
155 * set visibility for a node and all child nodes/layers
156 *
157 * @param vc
158 * @param nodeID
159 * @param hidden
160 */
161 public static void setVisibility( ViewContext vc, int nodeID, boolean hidden ) {
162 Layer[] layers = vc.getLayerList().getLayersByNodeId( nodeID );
163 for ( Layer layer : layers ) {
164 layer.setHidden( hidden );
165 }
166 Node[] nodes = vc.getGeneral().getExtension().getLayerTreeRoot().getNode( nodeID ).getNodes();
167 for ( Node node : nodes ) {
168 setVisibility( vc, node.getId(), hidden );
169 }
170 }
171
172 /**
173 * creates the GetMap basic requests required by the JSP page assigned to the MapViewPortlet.
174 *
175 * @param vc
176 * @param user
177 * @param password
178 * @param sessionID
179 * @return list of GetMap requests
180 */
181 public static String[] createBaseRequests( ViewContext vc, String user, String password, String sessionID ) {
182
183 Layer[] layers = vc.getLayerList().getLayers();
184 List<String> list = new ArrayList<String>( layers.length );
185 int i = layers.length - 1;
186 try {
187 while ( i >= 0 ) {
188 GeneralExtension gExt = vc.getGeneral().getExtension();
189 Point[] bbox = vc.getGeneral().getBoundingBox();
190 StringBuffer sb = new StringBuffer( 1000 );
191 URL url = OWSUtils.getHTTPGetOperationURL( layers[i].getServer().getCapabilities(), GetMap.class );
192 if ( url != null ) {
193 String href = url.toExternalForm();
194
195 sb.append( OWSUtils.validateHTTPGetBaseURL( href ) );
196 sb.append( "SRS=" ).append( bbox[0].getCoordinateSystem().getIdentifier() );
197 if ( "1.0.0".equals( layers[i].getServer().getVersion() ) ) {
198 sb.append( "&REQUEST=map" );
199 sb.append( "&exceptions=INIMAGE" );
200 sb.append( "&WMTVER=" ).append( layers[i].getServer().getVersion() );
201 } else {
202 sb.append( "&REQUEST=GetMap" );
203 sb.append( "&exceptions=application/vnd.ogc.se_inimage" );
204 sb.append( "&VERSION=" ).append( layers[i].getServer().getVersion() );
205 }
206 sb.append( "&transparent=" ).append( true );
207 if ( gExt == null ) {
208 sb.append( "&BGCOLOR=0xFFFFFF" );
209 } else {
210 sb.append( "&BGCOLOR=" ).append( gExt.getBgColor() );
211 }
212
213 Format format = layers[i].getFormatList().getCurrentFormat();
214 sb.append( "&FORMAT=" ).append( format.getName() );
215 StringBuffer styles = new StringBuffer( 1000 );
216 styles.append( "&STYLES=" );
217 StringBuffer lyrs = new StringBuffer( 1000 );
218 lyrs.append( "&LAYERS=" );
219 String title = layers[i].getServer().getTitle();
220 int authentication = -1;
221 while ( i >= 0 && title.equals( layers[i].getServer().getTitle() ) ) {
222 if ( !layers[i].isHidden() ) {
223 if ( authentication < 0 ) {
224 // just evaluate if not has already been loaded
225 authentication = layers[i].getExtension().getAuthentication();
226 }
227 lyrs.append( URLEncoder.encode( layers[i].getName(), "UTF-8" ) ).append( ',' );
228 String style = layers[i].getStyleList().getCurrentStyle().getName();
229 if ( style.equalsIgnoreCase( "DEFAULT" ) ) {
230 style = "";
231 }
232 styles.append( style ).append( ',' );
233 }
234 LayerExtension le = layers[i].getExtension();
235 Iterator<String> iterator = le.getVendorspecificParameterNames();
236 while ( iterator.hasNext() ) {
237 sb.append( '&' );
238 String name = iterator.next();
239 String value = le.getVendorspecificParameter( name );
240 sb.append( name ).append( '=' ).append( value );
241 }
242 i--;
243 }
244 if ( authentication == LayerExtension.USERPASSWORD ) {
245 if ( user != null ) {
246 sb.append( "&user=" ).append( URLEncoder.encode( user, CharsetUtils.getSystemCharset() ) );
247 }
248 if ( password != null ) {
249 sb.append( "&password=" );
250 sb.append( URLEncoder.encode( password, CharsetUtils.getSystemCharset() ) );
251 }
252 } else if ( authentication == LayerExtension.SESSIONID ) {
253 if ( sessionID != null ) {
254 sb.append( "&sessionID=" );
255 sb.append( URLEncoder.encode( sessionID, CharsetUtils.getSystemCharset() ) );
256 }
257 }
258 String s1 = lyrs.substring( 0, lyrs.length() - 1 );
259 String s2 = styles.substring( 0, styles.length() - 1 );
260 sb.append( s1 ).append( s2 );
261
262 if ( s1.length() > 7 ) {
263 // ensure that a request will just be created if
264 // at least one layer of a group is visible
265 list.add( sb.toString() );
266 }
267 } else {
268 LOG.logWarning( "no service available for layer: " + layers[i--].getName() );
269 }
270
271 }
272 } catch ( Exception shouldneverhappen ) {
273 shouldneverhappen.printStackTrace();
274 }
275
276 return list.toArray( new String[list.size()] );
277
278 }
279
280 /**
281 * creates the GetMap basic requests required by the JSP page assigned to the MapViewPortlet.
282 *
283 * @param vc
284 * @return the GetMap basic requests
285 */
286 public static String[] createBaseRequests( ViewContext vc ) {
287
288 return createBaseRequests( vc, null, null, null );
289
290 }
291
292 }