/**
* Create a collection of layer lists and their included layers described by an array of XML
* layer-list description elements.
*
* <p>Any exceptions occurring during creation of the layer lists or their included layers are
* logged and not re-thrown. The layers associated with the exceptions are not included in the
* returned layer list.
*
* @param elements the XML elements describing the layer lists to create.
* @param params any parameters to apply when creating the included layers.
* @return an array containing the specified layer lists.
*/
protected LayerList[] createLayerLists(Element[] elements, AVList params) {
ArrayList<LayerList> layerLists = new ArrayList<LayerList>();
for (Element element : elements) {
try {
String href = WWXML.getText(element, "@href");
if (href != null && href.length() > 0) {
Object o = this.createFromConfigSource(href, params);
if (o == null) continue;
if (o instanceof Layer) {
LayerList ll = new LayerList();
ll.add((Layer) o);
o = ll;
}
if (o instanceof LayerList) {
LayerList list = (LayerList) o;
if (list != null && list.size() > 0) layerLists.add(list);
} else if (o instanceof LayerList[]) {
LayerList[] lists = (LayerList[]) o;
if (lists != null && lists.length > 0) layerLists.addAll(Arrays.asList(lists));
} else {
String msg =
Logging.getMessage("LayerFactory.UnexpectedTypeForLayer", o.getClass().getName());
Logging.logger().log(java.util.logging.Level.WARNING, msg);
}
continue;
}
String title = WWXML.getText(element, "@title");
Element[] children = WWXML.getElements(element, "./Layer", null);
if (children != null && children.length > 0) {
LayerList list = this.createLayerList(children, params);
if (list != null && list.size() > 0) {
layerLists.add(list);
if (title != null && title.length() > 0) list.setValue(AVKey.DISPLAY_NAME, title);
}
}
} catch (Exception e) {
Logging.logger().log(java.util.logging.Level.WARNING, e.getMessage(), e);
// keep going to create other layers
}
}
return layerLists.toArray(new LayerList[layerLists.size()]);
}
public List<Tile> getTiles() {
if (tileKeys.isEmpty()) {
Tile[] tiles = buildTiles(this.placeNameService, this);
// load tileKeys
for (Tile t : tiles) {
tileKeys.add(t.getFileCachePath());
WorldWind.getMemoryCache(Tile.class.getName()).add(t.getFileCachePath(), t);
}
return Arrays.asList(tiles);
} else {
List<Tile> dataTiles = new ArrayList<Tile>();
for (String s : tileKeys) {
Tile t = (Tile) WorldWind.getMemoryCache(Tile.class.getName()).getObject(s);
if (t != null) {
dataTiles.add(t);
}
}
return dataTiles;
}
}
/**
* 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);
}
}