// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.actions;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.awt.BorderLayout;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.JosmAction;
import org.openstreetmap.josm.data.Bounds;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.gui.MapView;
import org.openstreetmap.josm.tools.GBC;
import org.openstreetmap.josm.tools.OsmUrlToBounds;
import org.openstreetmap.josm.tools.Shortcut;
public class JumpToAction extends JosmAction implements MouseListener {
public JumpToAction() {
super(tr("Jump To Position"), null, tr("Opens a dialog that allows to jump to a specific location"), Shortcut.registerShortcut("tools:jumpto", tr("Tool: {0}", tr("Jump To Position")),
KeyEvent.VK_G, Shortcut.GROUP_HOTKEY), true);
}
private JTextField url = new JTextField();
private JTextField lat = new JTextField();
private JTextField lon = new JTextField();
private JTextField zm = new JTextField();
private double zoomFactor = 0;
public void showJumpToDialog() {
MapView mv = Main.map.mapView;
if(mv == null)
return;
LatLon curPos=mv.getProjection().eastNorth2latlon(mv.getCenter());
lat.setText(java.lang.Double.toString(curPos.lat()));
lon.setText(java.lang.Double.toString(curPos.lon()));
double dist = mv.getDist100Pixel();
zoomFactor = 1/dist;
zm.setText(java.lang.Long.toString(Math.round(dist*100)/100));
updateUrl(true);
JPanel panel = new JPanel(new BorderLayout());
panel.add(new JLabel("<html>"
+ tr("Enter Lat/Lon to jump to position.")
+ "<br>"
+ tr("You can also paste an URL from www.openstreetmap.org")
+ "<br>"
+ "</html>"),
BorderLayout.NORTH);
class osmURLListener implements DocumentListener {
public void changedUpdate(DocumentEvent e) { parseURL(); }
public void insertUpdate(DocumentEvent e) { parseURL(); }
public void removeUpdate(DocumentEvent e) { parseURL(); }
}
class osmLonLatListener implements DocumentListener {
public void changedUpdate(DocumentEvent e) { updateUrl(false); }
public void insertUpdate(DocumentEvent e) { updateUrl(false); }
public void removeUpdate(DocumentEvent e) { updateUrl(false); }
}
osmLonLatListener x=new osmLonLatListener();
lat.getDocument().addDocumentListener(x);
lon.getDocument().addDocumentListener(x);
zm.getDocument().addDocumentListener(x);
url.getDocument().addDocumentListener(new osmURLListener());
JPanel p = new JPanel(new GridBagLayout());
panel.add(p, BorderLayout.NORTH);
p.add(new JLabel(tr("Latitude")), GBC.eol());
p.add(lat, GBC.eol().fill(GBC.HORIZONTAL));
p.add(new JLabel(tr("Longitude")), GBC.eol());
p.add(lon, GBC.eol().fill(GBC.HORIZONTAL));
p.add(new JLabel(tr("Zoom (in metres)")), GBC.eol());
p.add(zm, GBC.eol().fill(GBC.HORIZONTAL));
p.add(new JLabel(tr("URL")), GBC.eol());
p.add(url, GBC.eol().fill(GBC.HORIZONTAL));
Object[] buttons = { tr("Jump there"), tr("Cancel") };
LatLon ll = null;
double zoomLvl = 100;
while(ll == null) {
int option = JOptionPane.showOptionDialog(
Main.parent,
panel,
tr("Jump to Position"),
JOptionPane.OK_CANCEL_OPTION,
JOptionPane.PLAIN_MESSAGE,
null,
buttons,
buttons[0]);
if (option != JOptionPane.OK_OPTION) return;
try {
zoomLvl = Double.parseDouble(zm.getText());
ll = new LatLon(Double.parseDouble(lat.getText()), Double.parseDouble(lon.getText()));
} catch (Exception ex) {
JOptionPane.showMessageDialog(Main.parent, tr("Could not parse Latitude, Longitude or Zoom. Please check."), tr("Unable to parse Lon/Lat"), JOptionPane.ERROR_MESSAGE);
}
}
mv.zoomToFactor(mv.getProjection().latlon2eastNorth(ll), zoomFactor * zoomLvl);
}
private void parseURL() {
if(!url.hasFocus()) return;
Bounds b = OsmUrlToBounds.parse(url.getText());
if (b != null) {
lat.setText(Double.toString((b.getMin().lat() + b.getMax().lat())/2));
lon.setText(Double.toString((b.getMin().lon() + b.getMax().lon())/2));
int zoomLvl = 16;
String[] args = url.getText().substring(url.getText().indexOf('?')+1).split("&");
for (String arg : args) {
int eq = arg.indexOf('=');
if (eq == -1 || !arg.substring(0, eq).equalsIgnoreCase("zoom")) continue;
zoomLvl = Integer.parseInt(arg.substring(eq + 1));
break;
}
// 10 000 000 = 10 000 * 1000 = World * (km -> m)
zm.setText(Double.toString(Math.round(10000000 * Math.pow(2, (-1) * zoomLvl))));
}
}
private void updateUrl(boolean force) {
if(!lat.hasFocus() && !lon.hasFocus() && !zm.hasFocus() && !force) return;
try {
double dlat = Double.parseDouble(lat.getText());
double dlon = Double.parseDouble(lon.getText());
double m = Double.parseDouble(zm.getText());
// Inverse function to the one above. 18 is the current maximum zoom
// available on standard renderers, so choose this is in case m
// should be zero
int zoomLvl = 18;
if(m > 0)
zoomLvl = (int)Math.round((-1) * Math.log(m/10000000)/Math.log(2));
int decimals = (int) Math.pow(10, (zoomLvl / 3));
dlat = Math.round(dlat * decimals);
dlat /= decimals;
dlon = Math.round(dlon * decimals);
dlon /= decimals;
url.setText("http://www.openstreetmap.org/?lat="+dlat+"&lon="+dlon+"&zoom="+zoomLvl);
} catch (NumberFormatException x) {}
}
public void actionPerformed(ActionEvent e) {
showJumpToDialog();
}
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseClicked(MouseEvent e) {
showJumpToDialog();
}
}