--- /dev/null
+package tim.prune.function;
+
+import java.io.InputStream;
+import java.net.URL;
+import java.util.ArrayList;
+
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import tim.prune.App;
+import tim.prune.I18nManager;
+import tim.prune.data.Coordinate;
+import tim.prune.data.DataPoint;
+import tim.prune.data.Distance;
+import tim.prune.data.Field;
+import tim.prune.data.Latitude;
+import tim.prune.data.Longitude;
+import tim.prune.function.search.GenericDownloaderFunction;
+import tim.prune.function.search.SearchResult;
+
+/**
+ * Function to load nearby point information from OSM
+ */
+public class SearchOsmPoisFunction extends GenericDownloaderFunction
+{
+ /** Maximum distance from point in m */
+ private static final int MAX_DISTANCE = 250;
+ /** Coordinates to search for */
+ private double _searchLatitude = 0.0, _searchLongitude = 0.0;
+
+
+ /**
+ * Constructor
+ * @param inApp App object
+ */
+ public SearchOsmPoisFunction(App inApp) {
+ super(inApp);
+ }
+
+ /**
+ * @return name key
+ */
+ public String getNameKey() {
+ return "function.searchosmpois";
+ }
+
+ /**
+ * @param inColNum index of column, 0 or 1
+ * @return key for this column
+ */
+ protected String getColumnKey(int inColNum)
+ {
+ if (inColNum == 0) return "dialog.osmpois.column.name";
+ return "dialog.osmpois.column.type";
+ }
+
+
+ /**
+ * Run method to get the nearby points in a separate thread
+ */
+ public void run()
+ {
+ _statusLabel.setText(I18nManager.getText("confirm.running"));
+ // Get coordinates from current point (if any) or from centre of screen
+ DataPoint point = _app.getTrackInfo().getCurrentPoint();
+ if (point == null)
+ {
+ double[] coords = _app.getViewport().getBounds();
+ _searchLatitude = (coords[0] + coords[2]) / 2.0;
+ _searchLongitude = (coords[1] + coords[3]) / 2.0;
+ }
+ else
+ {
+ _searchLatitude = point.getLatitude().getDouble();
+ _searchLongitude = point.getLongitude().getDouble();
+ }
+
+ // Submit search (language not an issue here)
+ submitSearch(_searchLatitude, _searchLongitude);
+
+ // Set status label according to error or "none found", leave blank if ok
+ if (_errorMessage == null && _trackListModel.isEmpty()) {
+ _errorMessage = I18nManager.getText("dialog.osmpois.nonefound");
+ }
+ _statusLabel.setText(_errorMessage == null ? "" : _errorMessage);
+ }
+
+ /**
+ * Submit the search for the given parameters
+ * @param inLat latitude
+ * @param inLon longitude
+ */
+ private void submitSearch(double inLat, double inLon)
+ {
+ String coords = "around:" + MAX_DISTANCE + "," + inLat + "," + inLon;
+ String urlString = "http://overpass-api.de/api/interpreter?data=("
+ + "node(" + coords + ")[\"amenity\"][\"name\"];"
+ + "node(" + coords + ")[\"railway\"][\"name\"];"
+ + "node(" + coords + ")[\"highway\"][\"name\"];"
+ + ");out%20qt;";
+ //System.out.println(urlString);
+ // Parse the returned XML with a special handler
+ SearchOsmPoisXmlHandler xmlHandler = new SearchOsmPoisXmlHandler();
+ InputStream inStream = null;
+
+ try
+ {
+ URL url = new URL(urlString);
+ SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();
+ inStream = url.openStream();
+ saxParser.parse(inStream, xmlHandler);
+ }
+ catch (Exception e) {
+ _errorMessage = e.getClass().getName() + " - " + e.getMessage();
+ }
+ // Close stream and ignore errors
+ try {
+ inStream.close();
+ } catch (Exception e) {}
+
+ // Calculate distances for each returned point
+ DataPoint searchPoint = new DataPoint(new Latitude(_searchLatitude, Coordinate.FORMAT_DECIMAL_FORCE_POINT),
+ new Longitude(_searchLongitude, Coordinate.FORMAT_DECIMAL_FORCE_POINT), null);
+ for (SearchResult result : xmlHandler.getPointList())
+ {
+ Latitude pointLat = new Latitude(result.getLatitude());
+ Longitude pointLon = new Longitude(result.getLongitude());
+ DataPoint foundPoint = new DataPoint(pointLat, pointLon, null);
+ double dist = DataPoint.calculateRadiansBetween(searchPoint, foundPoint);
+ result.setLength(Distance.convertRadiansToDistance(dist));
+ }
+
+ // TODO: maybe limit number of results using MAX_RESULTS
+ // Add track list to model
+ ArrayList<SearchResult> pointList = xmlHandler.getPointList();
+ _trackListModel.addTracks(pointList, true);
+ _trackListModel.setShowPointTypes(true);
+
+ // Show error message if any
+ if (_trackListModel.isEmpty())
+ {
+ String error = xmlHandler.getErrorMessage();
+ if (error != null && !error.equals(""))
+ {
+ _app.showErrorMessageNoLookup(getNameKey(), error);
+ _errorMessage = error;
+ }
+ }
+ }
+
+ /**
+ * Load the selected point(s)
+ */
+ protected void loadSelected()
+ {
+ // Find the rows selected in the table and get the corresponding coords
+ int numSelected = _trackTable.getSelectedRowCount();
+ if (numSelected < 1) return;
+ int[] rowNums = _trackTable.getSelectedRows();
+ for (int i=0; i<numSelected; i++)
+ {
+ int rowNum = rowNums[i];
+ if (rowNum >= 0 && rowNum < _trackListModel.getRowCount())
+ {
+ String lat = _trackListModel.getTrack(rowNum).getLatitude();
+ String lon = _trackListModel.getTrack(rowNum).getLongitude();
+ if (lat != null && lon != null)
+ {
+ DataPoint point = new DataPoint(new Latitude(lat), new Longitude(lon), null);
+ point.setFieldValue(Field.WAYPT_NAME, _trackListModel.getTrack(rowNum).getTrackName(), false);
+ _app.createPoint(point);
+ }
+ }
+ }
+ // Close the dialog
+ _cancelled = true;
+ _dialog.dispose();
+ }
+}
projects / GpsPrune.git / blobdiff