/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.portal;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.deegree.model.spatialschema.Point;
import org.deegree.ogcwebservices.OWSUtils;
import org.deegree.ogcwebservices.wms.operation.GetMap;
import org.deegree.portal.context.Format;
import org.deegree.portal.context.GeneralExtension;
import org.deegree.portal.context.Layer;
import org.deegree.portal.context.LayerList;
import org.deegree.portal.context.ViewContext;
/**
*
*
*
* @version $Revision: 1.1 $
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author: poth $
*
* @version 1.0. $Revision: 1.1 $, $Date: 2006/10/17 20:31:19 $
*
* @since 2.0
*/
public class PortalUtils {
/**
* returns a comma seperated list of layers marked as sensible for
* feature info requestes
* @param vc
* @return
*/
public static List getFeatureInfoLayers(ViewContext vc) {
List list = new ArrayList();
LayerList layerList = vc.getLayerList();
Layer[] layers = layerList.getLayers();
for (int i = 0; i < layers.length; i++) {
if ( layers[i].getExtension() != null && layers[i].getExtension().isSelectedForQuery() ) {
list.add( layers[i].getName() );
}
}
return list;
}
/**
* returns a comma seperated list of visible layers
* @param vc
* @return
*/
public static List getVisibleLayers(ViewContext vc) {
List list = new ArrayList();
LayerList layerList = vc.getLayerList();
Layer[] layers = layerList.getLayers();
for (int i = 0; i < layers.length; i++) {
if ( !layers[i].isHidden() ) {
String[] s = new String[2];
s[0] = layers[i].getName();
s[1] = layers[i].getServer().getOnlineResource().toExternalForm();
list.add( s );
}
}
return list;
}
/**
* returns true if at least one layer of the passed server is visible
* @param vc
* @param serverTitle
* @return
*/
public static boolean hasServerVisibleLayers(ViewContext vc, String serverTitle) {
LayerList layerList = vc.getLayerList();
Layer[] layers = layerList.getLayers();
for (int i = 0; i < layers.length; i++) {
if ( layers[i].getServer().getTitle().equals( serverTitle ) &&
!layers[i].isHidden() ) {
return true;
}
}
return false;
}
/**
* creates the GetMap basic requests required by the JSP page assigned to
* the MapViewPortlet.
* @param vc
* @return
*/
public static String[] createBaseRequests(ViewContext vc) {
Layer[] layers = vc.getLayerList().getLayers();
List list = new ArrayList( layers.length );
int i = layers.length-1;
try {
while ( i >= 0 ) {
GeneralExtension gExt = vc.getGeneral().getExtension();
Point[] bbox = vc.getGeneral().getBoundingBox();
StringBuffer sb = new StringBuffer( 1000 );
URL url = OWSUtils.getHTTPGetOperationURL( layers[i].getServer().getCapabilities(),
GetMap.class );
if ( url != null ){
String href = url.toExternalForm();
sb.append( OWSUtils.validateHTTPGetBaseURL( href ) );
sb.append( "SRS=" ).append( bbox[0].getCoordinateSystem().getName() );
sb.append( "&REQUEST=GetMap&VERSION=" ).append( layers[i].getServer().getVersion() );
sb.append( "&transparent=" ).append( true );
if ( gExt == null ) {
sb.append( "&BGCOLOR=" ).append( "0xFFFFFF" );
} else {
sb.append( "&BGCOLOR=" ).append( gExt.getBgColor() );
}
Format format = layers[i].getFormatList().getCurrentFormat();
sb.append( "&FORMAT=" ).append( format.getName() );
StringBuffer styles = new StringBuffer( 1000 );
styles.append( "&STYLES=");
StringBuffer lyrs = new StringBuffer( 1000 );
lyrs.append( "&LAYERS=" );
String title = layers[i].getServer().getTitle();
while ( i >= 0 && title.equals( layers[i].getServer().getTitle() ) ) {
if ( !layers[i].isHidden() ) {
lyrs.append( layers[i].getName() ).append( ',' );
String style = layers[i].getStyleList().getCurrentStyle().getName();
if ( style.equalsIgnoreCase( "DEFAULT") ) {
style = "";
}
styles.append( style ).append( ',' );
}
i--;
}
String s1 = lyrs.substring( 0, lyrs.length() - 1 );
String s2 = styles.substring( 0, styles.length() - 1 );
sb.append( s1 ).append( s2 );
if ( s1.length() > 7 ) {
// ensure that a request will just be created if
// at least one layer of a group is visible
list.add( sb.toString() );
}
} else {
System.out.println( "no service available for layer: " + layers[i--].getName() );
}
}
} catch ( Exception shouldneverhappen ) {
shouldneverhappen.printStackTrace();
}
return (String[])list.toArray( new String[list.size()] );
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: PortalUtils.java,v $
Revision 1.1 2006/10/17 20:31:19 poth
*** empty log message ***
Revision 1.10 2006/08/29 19:17:11 poth
bug fix - add code for catching the case that no service is available for a layer
Revision 1.9 2006/08/20 20:51:43 poth
method validateHTTPGetBaseURL moved to OWSUtil
Revision 1.8 2006/08/18 08:58:50 poth
method added
Revision 1.7 2006/08/17 19:30:35 poth
bug fix - OGC WMS 1.3 specification defines that HTTPGet URLs must end with '&' or '?'
Revision 1.6 2006/06/22 14:42:38 poth
*** empty log message ***
Revision 1.5 2006/06/11 17:59:48 poth
bug fix - marking active featureinfo layer
Revision 1.4 2006/06/08 20:27:12 poth
bug fix - handling wms style elements with empty Name and Title element
Revision 1.3 2006/06/08 11:33:30 poth
*** empty log message ***
Revision 1.2 2006/06/06 13:20:18 poth
some bug fixes
Revision 1.1 2006/05/19 13:13:34 poth
moved to another package
********************************************************************** */