1 package tim.prune.function;
3 import java.io.InputStream;
5 import java.util.ArrayList;
7 import javax.xml.parsers.SAXParser;
8 import javax.xml.parsers.SAXParserFactory;
11 import tim.prune.I18nManager;
12 import tim.prune.data.DataPoint;
13 import tim.prune.data.Field;
14 import tim.prune.data.Latitude;
15 import tim.prune.data.Longitude;
16 import tim.prune.function.gpsies.GenericDownloaderFunction;
17 import tim.prune.function.gpsies.GpsiesTrack;
20 * Function to load nearby point information from Wikipedia
21 * according to the currently viewed area
23 public class GetWikipediaFunction extends GenericDownloaderFunction
25 /** Maximum number of results to get */
26 private static final int MAX_RESULTS = 20;
27 /** Maximum distance from point in km */
28 private static final int MAX_DISTANCE = 15;
33 * @param inApp App object
35 public GetWikipediaFunction(App inApp) {
42 public String getNameKey() {
43 return "function.getwikipedia";
47 * @param inColNum index of column, 0 or 1
48 * @return key for this column
50 protected String getColumnKey(int inColNum)
52 if (inColNum == 0) return "dialog.wikipedia.column.name";
53 return "dialog.wikipedia.column.distance";
58 * Run method to call geonames in separate thread
62 _statusLabel.setText(I18nManager.getText("confirm.running"));
63 // Get coordinates from current point (if any) or from centre of screen
64 double lat = 0.0, lon = 0.0;
65 DataPoint point = _app.getTrackInfo().getCurrentPoint();
68 double[] coords = _app.getViewport().getBounds();
69 lat = (coords[0] + coords[2]) / 2.0;
70 lon = (coords[1] + coords[3]) / 2.0;
73 lat = point.getLatitude().getDouble();
74 lon = point.getLongitude().getDouble();
77 String descMessage = "";
78 InputStream inStream = null;
80 // Example http://ws.geonames.org/findNearbyWikipedia?lat=47&lng=9
81 String urlString = "http://ws.geonames.org/findNearbyWikipedia?lat=" +
82 lat + "&lng=" + lon + "&maxRows=" + MAX_RESULTS
83 + "&radius=" + MAX_DISTANCE + "&lang=" + I18nManager.getText("wikipedia.lang");
84 // Parse the returned XML with a special handler
85 GetWikipediaXmlHandler xmlHandler = new GetWikipediaXmlHandler();
88 URL url = new URL(urlString);
89 SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();
90 inStream = url.openStream();
91 saxParser.parse(inStream, xmlHandler);
94 descMessage = e.getClass().getName() + " - " + e.getMessage();
96 // Close stream and ignore errors
99 } catch (Exception e) {}
100 // Add track list to model
101 ArrayList<GpsiesTrack> trackList = xmlHandler.getTrackList();
102 _trackListModel.addTracks(trackList);
104 // Set status label according to error or "none found", leave blank if ok
105 if (descMessage.equals("") && (trackList == null || trackList.size() == 0)) {
106 descMessage = I18nManager.getText("dialog.gpsies.nonefound");
108 _statusLabel.setText(descMessage);
112 * Load the selected track or point
114 protected void loadSelected()
116 // Find the row selected in the table and get the corresponding track
117 int rowNum = _trackTable.getSelectedRow();
118 if (rowNum >= 0 && rowNum < _trackListModel.getRowCount())
120 String coords = _trackListModel.getTrack(rowNum).getDownloadLink();
121 String[] latlon = coords.split(",");
122 if (latlon.length == 2)
124 DataPoint point = new DataPoint(new Latitude(latlon[0]), new Longitude(latlon[1]), null);
125 point.setFieldValue(Field.WAYPT_NAME, _trackListModel.getTrack(rowNum).getTrackName(), false);
126 _app.createPoint(point);