--- /dev/null
+package tim.prune.function;
+
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.FlowLayout;
+import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.text.NumberFormat;
+
+import javax.swing.BorderFactory;
+import javax.swing.BoxLayout;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JFileChooser;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JProgressBar;
+
+import tim.prune.App;
+import tim.prune.GenericFunction;
+import tim.prune.I18nManager;
+import tim.prune.data.DoubleRange;
+
+/**
+ * Class to allow the download of OSM data (using the XAPI)
+ * for the area covered by the data
+ */
+public class DownloadOsmFunction extends GenericFunction implements Runnable
+{
+ private JDialog _dialog = null;
+ private JLabel[] _latLonLabels = null;
+ private JProgressBar _progressBar = null;
+ private JButton _okButton = null;
+ private JFileChooser _fileChooser = null;
+ private File _selectedFile = null;
+ private boolean _cancelled = false;
+ /** Number formatter */
+ private final NumberFormat FORMAT_TWO_DP = NumberFormat.getNumberInstance();
+
+
+ /**
+ * Constructor
+ * @param inApp application object for callback
+ */
+ public DownloadOsmFunction(App inApp)
+ {
+ super(inApp);
+ FORMAT_TWO_DP.setMaximumFractionDigits(2);
+ FORMAT_TWO_DP.setMinimumFractionDigits(2);
+ }
+
+ /** Get the name key */
+ public String getNameKey() {
+ return "function.downloadosm";
+ }
+
+ /**
+ * Begin the function
+ */
+ public void begin()
+ {
+ // Make dialog window
+ if (_dialog == null)
+ {
+ _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
+ _dialog.setLocationRelativeTo(_parentFrame);
+ _dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+ _dialog.getContentPane().add(makeDialogComponents());
+ _dialog.pack();
+ _fileChooser = new JFileChooser();
+ _fileChooser.setSelectedFile(new File("data.osm"));
+ }
+ initDialog();
+ _dialog.setVisible(true);
+ }
+
+
+ /**
+ * Create dialog components
+ * @return Panel containing all gui elements in dialog
+ */
+ private Component makeDialogComponents()
+ {
+ JPanel dialogPanel = new JPanel();
+ dialogPanel.setLayout(new BorderLayout(0, 10));
+ dialogPanel.add(new JLabel(I18nManager.getText("dialog.downloadosm.desc")), BorderLayout.NORTH);
+ // grid of labels to show lat/long extent
+ JPanel gridPanel = new JPanel();
+ gridPanel.setLayout(new GridLayout(3, 3));
+ _latLonLabels = new JLabel[4];
+ for (int i=0; i<4; i++) {
+ _latLonLabels[i] = new JLabel("0");
+ }
+ int lNum = 0;
+ for (int i=0; i<4; i++) {
+ gridPanel.add(new JLabel(" "));
+ gridPanel.add(_latLonLabels[lNum++]);
+ }
+ // layout main panel
+ JPanel mainPanel = new JPanel();
+ mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
+ mainPanel.add(gridPanel);
+ _progressBar = new JProgressBar();
+ _progressBar.setIndeterminate(true);
+ mainPanel.add(_progressBar);
+ dialogPanel.add(mainPanel, BorderLayout.CENTER);
+ // button panel at bottom
+ JPanel buttonPanel = new JPanel();
+ buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+ _okButton = new JButton(I18nManager.getText("button.ok"));
+ ActionListener okListener = new ActionListener() {
+ public void actionPerformed(ActionEvent e) {
+ finish();
+ }
+ };
+ _okButton.addActionListener(okListener);
+ buttonPanel.add(_okButton);
+ JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
+ cancelButton.addActionListener(new ActionListener() {
+ public void actionPerformed(ActionEvent e) {
+ _cancelled = true;
+ _dialog.dispose();
+ }
+ });
+ buttonPanel.add(cancelButton);
+ dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
+ dialogPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 15));
+ return dialogPanel;
+ }
+
+ /**
+ * Initialise the values of the labels in the dialog
+ */
+ private void initDialog()
+ {
+ // Get range of data
+ String[] lats = expandRange(_app.getTrackInfo().getTrack().getLatRange());
+ String[] lons = expandRange(_app.getTrackInfo().getTrack().getLonRange());
+ _latLonLabels[0].setText(lats[1]); // max lat
+ _latLonLabels[1].setText(lons[0]); // min lon
+ _latLonLabels[2].setText(lons[1]); // max lon
+ _latLonLabels[3].setText(lats[0]); // min lat
+ _okButton.setEnabled(true);
+ _progressBar.setVisible(false);
+ _cancelled = false;
+ }
+
+ /**
+ * Expand the given range to reasonable limits
+ * @param inRange range of lat/long values
+ * @return expanded range as pair of Strings
+ */
+ private String[] expandRange(DoubleRange inRange)
+ {
+ double mid = (inRange.getMaximum() + inRange.getMinimum()) / 2.0;
+ double range = inRange.getRange();
+ double max = 0.0, min = 0.0;
+ // Expand range to at least 0.02 degree
+ if (range < 0.02)
+ {
+ min = mid - 0.01;
+ max = mid + 0.01;
+ }
+ else {
+ // expand by 10% in both directions
+ min = mid - range * 0.55;
+ max = mid + range * 0.55;
+ }
+ // Round min down to 0.01 degree
+ int minCents = (int) (100 * min);
+ // Round max upwards likewise
+ int maxCents = (int) (100 * max + 1);
+ final String[] answer = new String[] {FORMAT_TWO_DP.format(minCents/100.0),
+ FORMAT_TWO_DP.format(maxCents/100.0)};
+ return answer;
+ }
+
+ /**
+ * Finish the dialog when OK pressed
+ */
+ private void finish()
+ {
+ if (!_okButton.isEnabled()) return;
+ _selectedFile = selectOsmFile();
+ if (_selectedFile != null)
+ {
+ // Show progress bar
+ _okButton.setEnabled(false);
+ _progressBar.setVisible(true);
+ new Thread(this).start();
+ }
+ else
+ _dialog.dispose();
+ }
+
+ /**
+ * Select a file to save the OSM data to
+ * @return selected file or null if cancelled
+ */
+ private File selectOsmFile()
+ {
+ File saveFile = null;
+ boolean chooseAgain = false;
+ do
+ {
+ chooseAgain = false;
+ if (_fileChooser.showSaveDialog(_dialog) == JFileChooser.APPROVE_OPTION)
+ {
+ // OK pressed and file chosen
+ File file = _fileChooser.getSelectedFile();
+ // Check if file exists and if necessary prompt for overwrite
+ Object[] buttonTexts = {I18nManager.getText("button.overwrite"), I18nManager.getText("button.cancel")};
+ if (!file.exists() || JOptionPane.showOptionDialog(_dialog,
+ I18nManager.getText("dialog.save.overwrite.text"),
+ I18nManager.getText("dialog.save.overwrite.title"), JOptionPane.YES_NO_OPTION,
+ JOptionPane.WARNING_MESSAGE, null, buttonTexts, buttonTexts[1])
+ == JOptionPane.YES_OPTION)
+ {
+ // new file or overwrite confirmed
+ saveFile = file;
+ }
+ else
+ {
+ // file exists and overwrite cancelled - select again
+ chooseAgain = true;
+ }
+ }
+ } while (chooseAgain);
+ return saveFile;
+ }
+
+
+ /**
+ * Do the actual download - launched to run in another thread
+ */
+ public void run()
+ {
+ String url = "http://overpass-api.de/api/interpreter?data=(node(" +
+ _latLonLabels[3].getText() + "," + _latLonLabels[1].getText() + "," +
+ _latLonLabels[0].getText() + "," + _latLonLabels[2].getText() + ");<;);out%20qt;";
+ // System.out.println(url);
+
+ byte[] buffer = new byte[1024];
+ InputStream inStream = null;
+ FileOutputStream outStream = null;
+ int numBytesRead = 0;
+ try
+ {
+ inStream = new URL(url).openStream();
+ outStream = new FileOutputStream(_selectedFile);
+ // Loop and copy bytes to file
+ while ((numBytesRead = inStream.read(buffer)) > -1 && !_cancelled)
+ {
+ outStream.write(buffer, 0, numBytesRead);
+ }
+ }
+ catch (MalformedURLException mue) {}
+ catch (IOException ioe) {
+ _app.showErrorMessageNoLookup(getNameKey(), ioe.getClass().getName() + " - " + ioe.getMessage());
+ }
+ // clean up streams
+ finally {
+ try {inStream.close();} catch (Exception e) {}
+ try {outStream.close();} catch (Exception e) {}
+ }
+ // close dialog
+ _dialog.dispose();
+ }
+}
projects / GpsPrune.git / blobdiff