001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/portal/PortalUtils.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2007 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53115 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042
043 ---------------------------------------------------------------------------*/
044 package org.deegree.portal;
045
046 import java.net.URL;
047 import java.util.ArrayList;
048 import java.util.Iterator;
049 import java.util.List;
050
051 import org.deegree.model.spatialschema.Point;
052 import org.deegree.ogcwebservices.OWSUtils;
053 import org.deegree.ogcwebservices.wms.operation.GetMap;
054 import org.deegree.portal.context.Format;
055 import org.deegree.portal.context.GeneralExtension;
056 import org.deegree.portal.context.Layer;
057 import org.deegree.portal.context.LayerExtension;
058 import org.deegree.portal.context.LayerList;
059 import org.deegree.portal.context.ViewContext;
060
061 /**
062 *
063 *
064 *
065 * @version $Revision: 7983 $
066 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
067 * @author last edited by: $Author: apoth $
068 *
069 * @version 1.0. $Revision: 7983 $, $Date: 2007-08-10 16:53:25 +0200 (Fr, 10 Aug 2007) $
070 *
071 * @since 2.0
072 */
073 public class PortalUtils {
074
075 /**
076 * returns a comma seperated list of layers marked as sensible for feature info requestes
077 *
078 * @param vc
079 * @return a comma seperated list of layers marked as sensible for feature info requestes
080 */
081 public static List<String> getFeatureInfoLayers( ViewContext vc ) {
082 List<String> list = new ArrayList<String>();
083 LayerList layerList = vc.getLayerList();
084 Layer[] layers = layerList.getLayers();
085 for ( int i = 0; i < layers.length; i++ ) {
086 if ( layers[i].getExtension() != null && layers[i].getExtension().isSelectedForQuery() ) {
087 list.add( layers[i].getName() );
088 }
089 }
090 return list;
091 }
092
093 /**
094 * returns a comma seperated list of visible layers
095 *
096 * @param vc
097 * @return a comma seperated list of visible layers
098 */
099 public static List getVisibleLayers( ViewContext vc ) {
100 List<String[]> list = new ArrayList<String[]>();
101 LayerList layerList = vc.getLayerList();
102 Layer[] layers = layerList.getLayers();
103 for ( int i = 0; i < layers.length; i++ ) {
104 if ( !layers[i].isHidden() ) {
105 String[] s = new String[2];
106 s[0] = layers[i].getName();
107 s[1] = layers[i].getServer().getOnlineResource().toExternalForm();
108 list.add( s );
109 }
110 }
111 return list;
112 }
113
114 /**
115 * returns true if at least one layer of the passed server is visible
116 *
117 * @param vc
118 * @param serverTitle
119 * @return <code>true</code> if at least one layer of the passed server is visible
120 */
121 public static boolean hasServerVisibleLayers( ViewContext vc, String serverTitle ) {
122 LayerList layerList = vc.getLayerList();
123 Layer[] layers = layerList.getLayers();
124 for ( int i = 0; i < layers.length; i++ ) {
125 if ( layers[i].getServer().getTitle().equals( serverTitle ) && !layers[i].isHidden() ) {
126 return true;
127 }
128 }
129 return false;
130 }
131
132 /**
133 * creates the GetMap basic requests required by the JSP page assigned to the MapViewPortlet.
134 *
135 * @param vc
136 * @return
137 */
138 public static String[] createBaseRequests( ViewContext vc ) {
139
140 Layer[] layers = vc.getLayerList().getLayers();
141 List<String> list = new ArrayList<String>( layers.length );
142 int i = layers.length - 1;
143 try {
144 while ( i >= 0 ) {
145 GeneralExtension gExt = vc.getGeneral().getExtension();
146 Point[] bbox = vc.getGeneral().getBoundingBox();
147 StringBuffer sb = new StringBuffer( 1000 );
148 URL url = OWSUtils.getHTTPGetOperationURL( layers[i].getServer().getCapabilities(), GetMap.class );
149 if ( url != null ) {
150 String href = url.toExternalForm();
151
152 sb.append( OWSUtils.validateHTTPGetBaseURL( href ) );
153 sb.append( "SRS=" ).append( bbox[0].getCoordinateSystem().getName() );
154 sb.append( "&REQUEST=GetMap&VERSION=" ).append( layers[i].getServer().getVersion() );
155 sb.append( "&transparent=" ).append( true );
156 if ( gExt == null ) {
157 sb.append( "&BGCOLOR=0xFFFFFF" );
158 } else {
159 sb.append( "&BGCOLOR=" ).append( gExt.getBgColor() );
160 }
161 sb.append( "&exceptions=application/vnd.ogc.se_inimage" );
162 Format format = layers[i].getFormatList().getCurrentFormat();
163 sb.append( "&FORMAT=" ).append( format.getName() );
164 StringBuffer styles = new StringBuffer( 1000 );
165 styles.append( "&STYLES=" );
166 StringBuffer lyrs = new StringBuffer( 1000 );
167 lyrs.append( "&LAYERS=" );
168 String title = layers[i].getServer().getTitle();
169 while ( i >= 0 && title.equals( layers[i].getServer().getTitle() ) ) {
170 if ( !layers[i].isHidden() ) {
171 lyrs.append( layers[i].getName() ).append( ',' );
172 String style = layers[i].getStyleList().getCurrentStyle().getName();
173 if ( style.equalsIgnoreCase( "DEFAULT" ) ) {
174 style = "";
175 }
176 styles.append( style ).append( ',' );
177 }
178 LayerExtension le = layers[i].getExtension();
179 Iterator<String> iterator = le.getVendorspecificParameterNames();
180 while ( iterator.hasNext() ) {
181 sb.append( '&' );
182 String name = iterator.next();
183 String value = le.getVendorspecificParameter( name );
184 sb.append( name ).append( '=' ).append( value );
185 }
186 i--;
187 }
188 String s1 = lyrs.substring( 0, lyrs.length() - 1 );
189 String s2 = styles.substring( 0, styles.length() - 1 );
190 sb.append( s1 ).append( s2 );
191
192 if ( s1.length() > 7 ) {
193 // ensure that a request will just be created if
194 // at least one layer of a group is visible
195 list.add( sb.toString() );
196 }
197 } else {
198 System.out.println( "no service available for layer: " + layers[i--].getName() );
199 }
200
201 }
202 } catch ( Exception shouldneverhappen ) {
203 shouldneverhappen.printStackTrace();
204 }
205
206 return list.toArray( new String[list.size()] );
207 }
208
209 }