private static boolean matchEPSG(List<Layer> layers, String epsgCode) {
boolean match = true;
for (Layer layer : layers) {
Set<String> srs = layer.getSrs();
if (!srs.contains(epsgCode)) {
match = false;
break;
}
}
return match;
}
/**
* We have made this visible so that WMSDescribeLayer (used by InfoView2) can figure out how to
* make the *exact* same request in order to a getInfo operation. We should really store the last
* request on the layer blackboard for this intra module communication.
*
* @return SRS code
*/
public static String findRequestCRS(
List<Layer> layers, CoordinateReferenceSystem viewportCRS, IMap map) {
String requestCRS = null;
if (layers == null || layers.isEmpty()) {
return null;
}
Collection<String> viewportEPSG = extractEPSG(map, viewportCRS);
if (viewportEPSG != null) {
String match = matchEPSG(layers, viewportEPSG);
if (match != null) return match;
}
if (matchEPSG(layers, EPSG_4326)) return EPSG_4326;
if (matchEPSG(layers, EPSG_4269)) {
return EPSG_4269;
}
Layer firstLayer = layers.get(0);
for (Object object : firstLayer.getSrs()) {
String epsgCode = (String) object;
try {
// Check to see if *we* can actually use this code first.
CRS.decode(epsgCode);
} catch (NoSuchAuthorityCodeException e) {
continue;
} catch (FactoryException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (matchEPSG(layers, epsgCode)) {
requestCRS = epsgCode;
return requestCRS;
}
}
if (requestCRS == null) {
// Hmm. Our layers have no SRS in common - we are in an illegal state
WMSPlugin.log(
"ERROR: Illegal State: Basic WMS Renderer contains layers with no common CRS. Unable to perform request."); //$NON-NLS-1$
return null;
}
return requestCRS;
}
private static void writeLayer(ILayer layer, BufferedWriter out) throws IOException {
Layer wmsLayer = layer.getResource(Layer.class, null);
WebMapServer wms = layer.getResource(WebMapServer.class, null);
WMSCapabilities caps = wms.getCapabilities();
String version = caps.getVersion();
String title = wms.getCapabilities().getService().getTitle();
int hidden = layer.isVisible() ? 1 : 0;
int info = layer.isApplicable("info") ? 1 : 0; // $NON-NLS-1$
String get = caps.getRequest().getGetCapabilities().getGet().toExternalForm();
System.out.println(get);
if (get.endsWith("&")) get = get.substring(0, get.length() - 1); // $NON-NLS-1$
append(
4,
out,
"<Layer hidden=\""
+ hidden
+ "\" queryable=\""
+ info
+ "\">"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
append(
6,
out,
"<Server service=\"OGC:WMS\" title=\""
+ title
+ "\" version=\""
+ version
+ "\">"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
append(
8,
out,
"<OnlineResource method=\"GET\" xlink:href=\""
+ get
+ "\" xlink:type=\"simple\"/>"); //$NON-NLS-1$ //$NON-NLS-2$
append(6, out, "</Server>"); // $NON-NLS-1$
append(6, out, "<Name>" + wmsLayer.getName() + "</Name>"); // $NON-NLS-1$ //$NON-NLS-2$
append(6, out, "<Title>" + wmsLayer.getTitle() + "</Title>"); // $NON-NLS-1$ //$NON-NLS-2$
if (!Double.isNaN(wmsLayer.getScaleHintMin()))
append(
6,
out,
"<sld:MinScaleDenominator>"
+ wmsLayer.getScaleHintMin()
+ "</sld:MinScaleDenominator>"); //$NON-NLS-1$ //$NON-NLS-2$
if (!Double.isNaN(wmsLayer.getScaleHintMax()))
append(
6,
out,
"<sld:MaxScaleDenominator>"
+ wmsLayer.getScaleHintMax()
+ "</sld:MaxScaleDenominator>"); //$NON-NLS-1$ //$NON-NLS-2$
for (String srs : (Set<String>) wmsLayer.getSrs()) {
append(6, out, "<SRS>" + srs + "</SRS>"); // $NON-NLS-1$ //$NON-NLS-2$
}
append(6, out, "<FormatList>"); // $NON-NLS-1$
boolean first = true; // TODO: look up preferences?
for (String format : caps.getRequest().getGetMap().getFormats()) {
if (first) {
append(
8, out, "<Format current=\"1\">" + format + "</Format>"); // $NON-NLS-1$ //$NON-NLS-2$
first = false;
}
append(8, out, "<Format>" + format + "</Format>"); // $NON-NLS-1$ //$NON-NLS-2$
}
append(6, out, "</FormatList>"); // $NON-NLS-1$
first = true; // TODO: look up on styleblackboard?
append(6, out, "<StyleList>"); // $NON-NLS-1$
Object styles = wmsLayer.getStyles();
List list;
if (styles instanceof String) list = Collections.singletonList(styles);
else if (styles instanceof List) list = (List) styles;
else list = Collections.emptyList();
for (Iterator<Object> iter = list.iterator(); iter.hasNext(); ) {
Object next = iter.next();
if (next instanceof String) {
String style = (String) next;
first = writeStyle(style, style, first, out);
} else if (next instanceof StyleImpl) {
StyleImpl style = (StyleImpl) next;
writeStyle(style.getName(), style.getTitle().toString(), first, out);
}
}
append(6, out, "</StyleList>"); // $NON-NLS-1$
append(4, out, "</Layer>"); // $NON-NLS-1$
}
