private static boolean doInternalSave(Layer layer, File file) {
if (file == null) return false;
try {
boolean exported = false;
for (FileExporter exporter : ExtensionFileFilter.exporters) {
if (exporter.acceptFile(file, layer)) {
exporter.exportData(file, layer);
exported = true;
break;
}
}
if (!exported) {
JOptionPane.showMessageDialog(
Main.parent,
tr("No Exporter found! Nothing saved."),
tr("Warning"),
JOptionPane.WARNING_MESSAGE);
return false;
}
layer.setName(file.getName());
layer.setAssociatedFile(file);
if (layer instanceof OsmDataLayer) {
((OsmDataLayer) layer).onPostSaveToFile();
}
Main.parent.repaint();
} catch (IOException e) {
e.printStackTrace();
return false;
}
return true;
}
private void parseJos(Document doc, ProgressMonitor progressMonitor) throws IllegalDataException {
Element root = doc.getDocumentElement();
if (!equal(root.getTagName(), "josm-session")) {
error(tr("Unexpected root element ''{0}'' in session file", root.getTagName()));
}
String version = root.getAttribute("version");
if (!"0.1".equals(version)) {
error(tr("Version ''{0}'' of session file is not supported. Expected: 0.1", version));
}
Element viewportEl = getElementByTagName(root, "viewport");
if (viewportEl != null) {
EastNorth center = null;
Element centerEl = getElementByTagName(viewportEl, "center");
if (centerEl != null && centerEl.hasAttribute("lat") && centerEl.hasAttribute("lon")) {
try {
LatLon centerLL =
new LatLon(
Double.parseDouble(centerEl.getAttribute("lat")),
Double.parseDouble(centerEl.getAttribute("lon")));
center = Projections.project(centerLL);
} catch (NumberFormatException ex) {
}
}
if (center != null) {
Element scaleEl = getElementByTagName(viewportEl, "scale");
if (scaleEl != null && scaleEl.hasAttribute("meter-per-pixel")) {
try {
double meterPerPixel = Double.parseDouble(scaleEl.getAttribute("meter-per-pixel"));
Projection proj = Main.getProjection();
// Get a "typical" distance in east/north units that
// corresponds to a couple of pixels. Shouldn't be too
// large, to keep it within projection bounds and
// not too small to avoid rounding errors.
double dist = 0.01 * proj.getDefaultZoomInPPD();
LatLon ll1 = proj.eastNorth2latlon(new EastNorth(center.east() - dist, center.north()));
LatLon ll2 = proj.eastNorth2latlon(new EastNorth(center.east() + dist, center.north()));
double meterPerEasting = ll1.greatCircleDistance(ll2) / dist / 2;
double scale = meterPerPixel / meterPerEasting; // unit: easting per pixel
viewport = new ViewportData(center, scale);
} catch (NumberFormatException ex) {
}
}
}
}
Element layersEl = getElementByTagName(root, "layers");
if (layersEl == null) return;
String activeAtt = layersEl.getAttribute("active");
try {
active = (activeAtt != null && !activeAtt.isEmpty()) ? Integer.parseInt(activeAtt) - 1 : -1;
} catch (NumberFormatException e) {
Main.warn(
"Unsupported value for 'active' layer attribute. Ignoring it. Error was: "
+ e.getMessage());
active = -1;
}
MultiMap<Integer, Integer> deps = new MultiMap<Integer, Integer>();
Map<Integer, Element> elems = new HashMap<Integer, Element>();
NodeList nodes = layersEl.getChildNodes();
for (int i = 0; i < nodes.getLength(); ++i) {
Node node = nodes.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
Element e = (Element) node;
if (equal(e.getTagName(), "layer")) {
if (!e.hasAttribute("index")) {
error(tr("missing mandatory attribute ''index'' for element ''layer''"));
}
Integer idx = null;
try {
idx = Integer.parseInt(e.getAttribute("index"));
} catch (NumberFormatException ex) {
}
if (idx == null) {
error(tr("unexpected format of attribute ''index'' for element ''layer''"));
}
if (elems.containsKey(idx)) {
error(
tr(
"attribute ''index'' ({0}) for element ''layer'' must be unique",
Integer.toString(idx)));
}
elems.put(idx, e);
deps.putVoid(idx);
String depStr = e.getAttribute("depends");
if (depStr != null) {
for (String sd : depStr.split(",")) {
Integer d = null;
try {
d = Integer.parseInt(sd);
} catch (NumberFormatException ex) {
Main.warn(ex);
}
if (d != null) {
deps.put(idx, d);
}
}
}
}
}
}
List<Integer> sorted = Utils.topologicalSort(deps);
final Map<Integer, Layer> layersMap = new TreeMap<Integer, Layer>(Collections.reverseOrder());
final Map<Integer, SessionLayerImporter> importers =
new HashMap<Integer, SessionLayerImporter>();
final Map<Integer, String> names = new HashMap<Integer, String>();
progressMonitor.setTicksCount(sorted.size());
LAYER:
for (int idx : sorted) {
Element e = elems.get(idx);
if (e == null) {
error(tr("missing layer with index {0}", idx));
}
if (!e.hasAttribute("name")) {
error(tr("missing mandatory attribute ''name'' for element ''layer''"));
}
String name = e.getAttribute("name");
names.put(idx, name);
if (!e.hasAttribute("type")) {
error(tr("missing mandatory attribute ''type'' for element ''layer''"));
}
String type = e.getAttribute("type");
SessionLayerImporter imp = getSessionLayerImporter(type);
if (imp == null) {
CancelOrContinueDialog dialog = new CancelOrContinueDialog();
dialog.show(
tr("Unable to load layer"),
tr("Cannot load layer of type ''{0}'' because no suitable importer was found.", type),
JOptionPane.WARNING_MESSAGE,
progressMonitor);
if (dialog.isCancel()) {
progressMonitor.cancel();
return;
} else {
continue;
}
} else {
importers.put(idx, imp);
List<LayerDependency> depsImp = new ArrayList<LayerDependency>();
for (int d : deps.get(idx)) {
SessionLayerImporter dImp = importers.get(d);
if (dImp == null) {
CancelOrContinueDialog dialog = new CancelOrContinueDialog();
dialog.show(
tr("Unable to load layer"),
tr(
"Cannot load layer {0} because it depends on layer {1} which has been skipped.",
idx, d),
JOptionPane.WARNING_MESSAGE,
progressMonitor);
if (dialog.isCancel()) {
progressMonitor.cancel();
return;
} else {
continue LAYER;
}
}
depsImp.add(new LayerDependency(d, layersMap.get(d), dImp));
}
ImportSupport support = new ImportSupport(name, idx, depsImp);
Layer layer = null;
Exception exception = null;
try {
layer = imp.load(e, support, progressMonitor.createSubTaskMonitor(1, false));
} catch (IllegalDataException ex) {
exception = ex;
} catch (IOException ex) {
exception = ex;
}
if (exception != null) {
exception.printStackTrace();
CancelOrContinueDialog dialog = new CancelOrContinueDialog();
dialog.show(
tr("Error loading layer"),
tr(
"<html>Could not load layer {0} ''{1}''.<br>Error is:<br>{2}</html>",
idx, name, exception.getMessage()),
JOptionPane.ERROR_MESSAGE,
progressMonitor);
if (dialog.isCancel()) {
progressMonitor.cancel();
return;
} else {
continue;
}
}
if (layer == null) throw new RuntimeException();
layersMap.put(idx, layer);
}
progressMonitor.worked(1);
}
layers = new ArrayList<Layer>();
for (int idx : layersMap.keySet()) {
Layer layer = layersMap.get(idx);
if (layer == null) {
continue;
}
Element el = elems.get(idx);
if (el.hasAttribute("visible")) {
layer.setVisible(Boolean.parseBoolean(el.getAttribute("visible")));
}
if (el.hasAttribute("opacity")) {
try {
double opacity = Double.parseDouble(el.getAttribute("opacity"));
layer.setOpacity(opacity);
} catch (NumberFormatException ex) {
Main.warn(ex);
}
}
}
for (Entry<Integer, Layer> e : layersMap.entrySet()) {
Layer l = e.getValue();
if (l == null) {
continue;
}
l.setName(names.get(e.getKey()));
layers.add(l);
}
}