/**
* Create a layer described by an XML layer description.
*
* @param domElement the XML element describing the layer to create.
* @param params any parameters to apply when creating the layer.
* @return a new layer
* @throws WWUnrecognizedException if the layer type or service type given in the describing
* element is unrecognized.
* @see #createTiledImageLayer(org.w3c.dom.Element, gov.nasa.worldwind.avlist.AVList).
*/
protected Layer createFromLayerDocument(Element domElement, AVList params) {
String className = WWXML.getText(domElement, "@className");
if (className != null && className.length() > 0) {
Layer layer = (Layer) WorldWind.createComponent(className);
String actuate = WWXML.getText(domElement, "@actuate");
layer.setEnabled(WWUtil.isEmpty(actuate) || actuate.equals("onLoad"));
WWXML.invokePropertySetters(layer, domElement);
return layer;
}
AVList props = WWXML.copyProperties(domElement, null);
if (props != null) { // Copy params and add any properties for this layer to the copy
if (params != null) props.setValues(params);
params = props;
}
Layer layer;
String href = WWXML.getText(domElement, "@href");
if (href != null && href.length() > 0) {
Object o = this.createFromConfigSource(href, params);
if (o == null) return null;
if (!(o instanceof Layer)) {
String msg =
Logging.getMessage("LayerFactory.UnexpectedTypeForLayer", o.getClass().getName());
throw new WWRuntimeException(msg);
}
layer = (Layer) o;
} else {
String layerType = WWXML.getText(domElement, "@layerType");
if (layerType != null && layerType.equals("TiledImageLayer")) {
layer = this.createTiledImageLayer(domElement, params);
} else {
String msg = Logging.getMessage("generic.UnrecognizedLayerType", layerType);
throw new WWUnrecognizedException(msg);
}
}
if (layer != null) {
String actuate = WWXML.getText(domElement, "@actuate");
layer.setEnabled(actuate != null && actuate.equals("onLoad"));
WWXML.invokePropertySetters(layer, domElement);
}
return layer;
}
/**
* Determines and stores the network sites to test for public network connectivity. The sites are
* drawn from the JVM's gov.nasa.worldwind.avkey.NetworkStatusTestSites property ({@link
* AVKey#NETWORK_STATUS_TEST_SITES}). If that property is not defined, the sites are drawn from
* the same property in the World Wind or application configuration file. If the sites are not
* specified there, the set of sites specified in {@link #DEFAULT_NETWORK_TEST_SITES} are used. To
* indicate an empty list in the JVM property or configuration file property, specify an empty
* site list, "".
*/
protected void establishNetworkTestSites() {
String testSites = System.getProperty(AVKey.NETWORK_STATUS_TEST_SITES);
if (testSites == null)
testSites = Configuration.getStringValue(AVKey.NETWORK_STATUS_TEST_SITES);
if (testSites == null) {
this.networkTestSites.addAll(Arrays.asList(DEFAULT_NETWORK_TEST_SITES));
} else {
String[] sites = testSites.split(",");
List<String> actualSites = new ArrayList<String>(sites.length);
for (String site : sites) {
site = WWUtil.removeWhiteSpace(site);
if (!WWUtil.isEmpty(site)) actualSites.add(site);
}
this.setNetworkTestSites(actualSites);
}
}