/**
* Build the resource map from the KML Model's <i>ResourceMap</i> element.
*
* @param model Model from which to create the resource map.
* @return Map that relates relative paths in the COLLADA document to paths relative to the KML
* document.
*/
protected Map<String, String> createResourceMap(KMLModel model) {
Map<String, String> map = new HashMap<String, String>();
KMLResourceMap resourceMap = model.getResourceMap();
if (resourceMap == null) return Collections.emptyMap();
for (KMLAlias alias : resourceMap.getAliases()) {
if (alias != null
&& !WWUtil.isEmpty(alias.getSourceRef())
&& !WWUtil.isEmpty(alias.getTargetHref())) {
map.put(alias.getSourceRef(), alias.getTargetHref());
}
}
return map.size() > 0 ? map : Collections.<String, String>emptyMap();
}
/**
* 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);
}
}
/**
* Thread's off a task to determine whether the resource is local or remote and then retrieves it
* either from disk cache or a remote server.
*
* @param dc the current draw context.
*/
protected void requestResource(DrawContext dc) {
if (WorldWind.getTaskService().isFull()) return;
KMLLink link = this.model.getLink();
if (link == null) return;
String address = link.getAddress(dc);
if (address != null) address = address.trim();
if (WWUtil.isEmpty(address)) return;
WorldWind.getTaskService().addTask(new RequestTask(this, address));
}