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package tim.prune.function.gpsies;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import tim.prune.App;
import tim.prune.GpsPrune;
import tim.prune.I18nManager;
import tim.prune.load.xml.XmlFileLoader;
import tim.prune.load.xml.ZipFileLoader;
/**
* Function to load track information from Gpsies.com
* according to the currently viewed area
*/
public class GetGpsiesFunction extends GenericDownloaderFunction
{
/** Number of results per page */
private static final int RESULTS_PER_PAGE = 20;
/** Maximum number of results to get */
private static final int MAX_RESULTS = 60;
/** New API key (specific to this program) */
private static final String GPSIES_API_KEY = "oumgvvbckiwpvsnb";
/**
* Constructor
* @param inApp App object
*/
public GetGpsiesFunction(App inApp) {
super(inApp);
}
/**
* @return name key
*/
public String getNameKey() {
return "function.getgpsies";
}
/**
* @param inColNum index of column, 0 or 1
* @return key for this column
*/
protected String getColumnKey(int inColNum)
{
if (inColNum == 0) return "dialog.gpsies.column.name";
return "dialog.gpsies.column.length";
}
/**
* Run method to call gpsies.com in separate thread
*/
public void run()
{
_statusLabel.setText(I18nManager.getText("confirm.running"));
// Act on callback to update list and send another request if necessary
double[] coords = _app.getViewport().getBounds();
int currPage = 1;
ArrayList<GpsiesTrack> trackList = null;
URL url = null;
String descMessage = "";
InputStream inStream = null;
// Loop for each page of the results
do
{
// Example http://ws.gpsies.com/api.do?BBOX=10,51,12,53&limit=20&resultPage=1&key=oumgvvbckiwpvsnb
String urlString = "http://ws.gpsies.com/api.do?BBOX=" +
coords[1] + "," + coords[0] + "," + coords[3] + "," + coords[2] +
"&limit=" + RESULTS_PER_PAGE + "&resultPage=" + currPage +
"&key=" + GPSIES_API_KEY;
// Parse the returned XML with a special handler
GpsiesXmlHandler xmlHandler = new GpsiesXmlHandler();
try
{
url = new URL(urlString);
SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();
URLConnection conn = url.openConnection();
conn.setRequestProperty("User-Agent", "GpsPrune v" + GpsPrune.VERSION_NUMBER);
inStream = conn.getInputStream();
saxParser.parse(inStream, xmlHandler);
}
catch (Exception e) {
descMessage = e.getClass().getName() + " - " + e.getMessage();
}
// Close stream and ignore errors
try {
inStream.close();
} catch (Exception e) {}
// Add track list to model
trackList = xmlHandler.getTrackList();
_trackListModel.addTracks(trackList);
// Compare number of results with results per page and call again if necessary
currPage++;
}
while (trackList != null && trackList.size() == RESULTS_PER_PAGE
&& _trackListModel.getRowCount() < MAX_RESULTS && !_cancelled);
// Set status label according to error or "none found", leave blank if ok
if (descMessage.equals("") && (trackList == null || trackList.size() == 0)) {
descMessage = I18nManager.getText("dialog.gpsies.nonefound");
}
_statusLabel.setText(descMessage);
}
/**
* Load the selected track(s)
*/
protected void loadSelected()
{
// Find the row(s) selected in the table and get the corresponding track
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 url = _trackListModel.getTrack(rowNum).getDownloadLink();
XmlFileLoader xmlLoader = new XmlFileLoader(_app);
ZipFileLoader loader = new ZipFileLoader(_app, xmlLoader);
if (i>0) _app.autoAppendNextFile();
try
{
loader.openStream(new URL(url).openStream());
}
catch (IOException ioe) {
System.err.println("IO Exception : " + ioe.getMessage());
}
}
}
// Close the dialog
_cancelled = true;
_dialog.dispose();
}
}
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