Version 18, July 2015

[GpsPrune.git] / tim / prune / function / SearchOpenCachingDeFunction.java

diff --git a/tim/prune/function/SearchOpenCachingDeFunction.java b/tim/prune/function/SearchOpenCachingDeFunction.java
new file mode 100644 (file)
index 0000000..20e2fc8
--- /dev/null
+++ b/tim/prune/function/SearchOpenCachingDeFunction.java
@@ -0,0 +1,152 @@
+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.DataPoint;
+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 information about geocaches nearby to the current point
+ * using the service at opencaching.de
+ */
+public class SearchOpenCachingDeFunction extends GenericDownloaderFunction
+{
+       /** Maximum distance from point in km */
+       private static final int MAX_DISTANCE = 50;
+
+
+       /**
+        * Constructor
+        * @param inApp App object
+        */
+       public SearchOpenCachingDeFunction(App inApp) {
+               super(inApp);
+       }
+
+       /**
+        * @return name key
+        */
+       public String getNameKey() {
+               return "function.searchopencachingde";
+       }
+
+       /**
+        * @param inColNum index of column, 0 or 1
+        * @return key for this column
+        */
+       protected String getColumnKey(int inColNum)
+       {
+               if (inColNum == 0) return "dialog.wikipedia.column.name";
+               return "dialog.wikipedia.column.distance";
+       }
+
+
+       /**
+        * Run method to call service in a separate thread
+        */
+       public void run()
+       {
+               _statusLabel.setText(I18nManager.getText("confirm.running"));
+               // Get coordinates from current point
+               DataPoint point = _app.getTrackInfo().getCurrentPoint();
+               if (point == null)
+               {
+                       return;
+               }
+
+               final double lat = point.getLatitude().getDouble();
+               final double lon = point.getLongitude().getDouble();
+               submitSearch(lat, lon);
+
+               // Set status label according to error or "none found", leave blank if ok
+               if (_errorMessage == null && _trackListModel.isEmpty()) {
+                       _errorMessage = I18nManager.getText("dialog.geocaching.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)
+       {
+               // The only parameters are lat and long from the current point
+               String urlString = "http://opencaching.de/search.php?searchto=searchbydistance&showresult=1"
+                       + "&output=XML&sort=bydistance&lat=" + inLat
+                       + "&lon=" + inLon + "&distance=" + MAX_DISTANCE + "&unit=km";
+               // Parse the returned XML with a special handler
+               OpenCachingDeXmlHandler xmlHandler = new OpenCachingDeXmlHandler();
+               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) {}
+               // Add track list to model
+               ArrayList<SearchResult> trackList = xmlHandler.getTrackList();
+               _trackListModel.addTracks(trackList);
+
+               // 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();
+       }
+}