001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.actions; 003 004import static org.openstreetmap.josm.tools.I18n.tr; 005 006import java.awt.BorderLayout; 007import java.awt.GridBagLayout; 008import java.awt.event.ActionEvent; 009import java.awt.event.KeyEvent; 010 011import javax.swing.Icon; 012import javax.swing.JLabel; 013import javax.swing.JOptionPane; 014import javax.swing.JPanel; 015import javax.swing.event.DocumentEvent; 016import javax.swing.event.DocumentListener; 017 018import org.openstreetmap.josm.Main; 019import org.openstreetmap.josm.data.Bounds; 020import org.openstreetmap.josm.data.coor.LatLon; 021import org.openstreetmap.josm.gui.MapFrame; 022import org.openstreetmap.josm.gui.MapFrameListener; 023import org.openstreetmap.josm.gui.MapView; 024import org.openstreetmap.josm.gui.widgets.JosmTextField; 025import org.openstreetmap.josm.tools.GBC; 026import org.openstreetmap.josm.tools.OsmUrlToBounds; 027import org.openstreetmap.josm.tools.Shortcut; 028 029/** 030 * Allows to jump to a specific location. 031 * @since 2575 032 */ 033public class JumpToAction extends JosmAction { 034 035 /** 036 * Constructs a new {@code JumpToAction}. 037 */ 038 public JumpToAction() { 039 super(tr("Jump To Position"), (Icon) null, tr("Opens a dialog that allows to jump to a specific location"), 040 Shortcut.registerShortcut("tools:jumpto", tr("Tool: {0}", tr("Jump To Position")), 041 KeyEvent.VK_J, Shortcut.CTRL), true, "action/jumpto", true); 042 } 043 044 private final JosmTextField url = new JosmTextField(); 045 private final JosmTextField lat = new JosmTextField(); 046 private final JosmTextField lon = new JosmTextField(); 047 private final JosmTextField zm = new JosmTextField(); 048 049 /** 050 * Displays the "Jump to" dialog. 051 */ 052 public void showJumpToDialog() { 053 if (!Main.isDisplayingMapView()) { 054 return; 055 } 056 MapView mv = Main.map.mapView; 057 LatLon curPos = mv.getProjection().eastNorth2latlon(mv.getCenter()); 058 lat.setText(Double.toString(curPos.lat())); 059 lon.setText(Double.toString(curPos.lon())); 060 061 double dist = mv.getDist100Pixel(); 062 double zoomFactor = 1/dist; 063 064 zm.setText(Long.toString(Math.round(dist*100)/100)); 065 updateUrl(true); 066 067 JPanel panel = new JPanel(new BorderLayout()); 068 panel.add(new JLabel("<html>" 069 + tr("Enter Lat/Lon to jump to position.") 070 + "<br>" 071 + tr("You can also paste an URL from www.openstreetmap.org") 072 + "<br>" 073 + "</html>"), 074 BorderLayout.NORTH); 075 076 class OsmURLListener implements DocumentListener { 077 @Override public void changedUpdate(DocumentEvent e) { parseURL(); } 078 @Override public void insertUpdate(DocumentEvent e) { parseURL(); } 079 @Override public void removeUpdate(DocumentEvent e) { parseURL(); } 080 } 081 082 class OsmLonLatListener implements DocumentListener { 083 @Override public void changedUpdate(DocumentEvent e) { updateUrl(false); } 084 @Override public void insertUpdate(DocumentEvent e) { updateUrl(false); } 085 @Override public void removeUpdate(DocumentEvent e) { updateUrl(false); } 086 } 087 088 OsmLonLatListener x = new OsmLonLatListener(); 089 lat.getDocument().addDocumentListener(x); 090 lon.getDocument().addDocumentListener(x); 091 zm.getDocument().addDocumentListener(x); 092 url.getDocument().addDocumentListener(new OsmURLListener()); 093 094 JPanel p = new JPanel(new GridBagLayout()); 095 panel.add(p, BorderLayout.NORTH); 096 097 p.add(new JLabel(tr("Latitude")), GBC.eol()); 098 p.add(lat, GBC.eol().fill(GBC.HORIZONTAL)); 099 100 p.add(new JLabel(tr("Longitude")), GBC.eol()); 101 p.add(lon, GBC.eol().fill(GBC.HORIZONTAL)); 102 103 p.add(new JLabel(tr("Zoom (in metres)")), GBC.eol()); 104 p.add(zm, GBC.eol().fill(GBC.HORIZONTAL)); 105 106 p.add(new JLabel(tr("URL")), GBC.eol()); 107 p.add(url, GBC.eol().fill(GBC.HORIZONTAL)); 108 109 Object[] buttons = { tr("Jump there"), tr("Cancel") }; 110 LatLon ll = null; 111 double zoomLvl = 100; 112 while(ll == null) { 113 int option = JOptionPane.showOptionDialog( 114 Main.parent, 115 panel, 116 tr("Jump to Position"), 117 JOptionPane.OK_CANCEL_OPTION, 118 JOptionPane.PLAIN_MESSAGE, 119 null, 120 buttons, 121 buttons[0]); 122 123 if (option != JOptionPane.OK_OPTION) return; 124 try { 125 zoomLvl = Double.parseDouble(zm.getText()); 126 ll = new LatLon(Double.parseDouble(lat.getText()), Double.parseDouble(lon.getText())); 127 } catch (NumberFormatException ex) { 128 JOptionPane.showMessageDialog(Main.parent, tr("Could not parse Latitude, Longitude or Zoom. Please check."), tr("Unable to parse Lon/Lat"), JOptionPane.ERROR_MESSAGE); 129 } 130 } 131 132 mv.zoomToFactor(mv.getProjection().latlon2eastNorth(ll), zoomFactor * zoomLvl); 133 } 134 135 private void parseURL() { 136 if (!url.hasFocus()) return; 137 String urlText = url.getText(); 138 Bounds b = OsmUrlToBounds.parse(urlText); 139 if (b != null) { 140 lat.setText(Double.toString((b.getMinLat() + b.getMaxLat())/2)); 141 lon.setText(Double.toString((b.getMinLon() + b.getMaxLon())/2)); 142 143 int zoomLvl = 16; 144 int hashIndex = urlText.indexOf("#map"); 145 if (hashIndex >= 0) { 146 zoomLvl = Integer.parseInt(urlText.substring(hashIndex+5, urlText.indexOf('/', hashIndex))); 147 } else { 148 String[] args = urlText.substring(urlText.indexOf('?')+1).split("&"); 149 for (String arg : args) { 150 int eq = arg.indexOf('='); 151 if (eq == -1 || !arg.substring(0, eq).equalsIgnoreCase("zoom")) continue; 152 153 zoomLvl = Integer.parseInt(arg.substring(eq + 1)); 154 break; 155 } 156 } 157 158 // 10 000 000 = 10 000 * 1000 = World * (km -> m) 159 zm.setText(Double.toString(Math.round(10000000 * Math.pow(2, (-1) * zoomLvl)))); 160 } 161 } 162 163 private void updateUrl(boolean force) { 164 if(!lat.hasFocus() && !lon.hasFocus() && !zm.hasFocus() && !force) return; 165 try { 166 double dlat = Double.parseDouble(lat.getText()); 167 double dlon = Double.parseDouble(lon.getText()); 168 double m = Double.parseDouble(zm.getText()); 169 // Inverse function to the one above. 18 is the current maximum zoom 170 // available on standard renderers, so choose this is in case m 171 // should be zero 172 int zoomLvl = 18; 173 if(m > 0) 174 zoomLvl = (int)Math.round((-1) * Math.log(m/10000000)/Math.log(2)); 175 176 url.setText(OsmUrlToBounds.getURL(dlat, dlon, zoomLvl)); 177 } catch (NumberFormatException x) { 178 Main.debug(x.getMessage()); 179 } 180 } 181 182 @Override 183 public void actionPerformed(ActionEvent e) { 184 showJumpToDialog(); 185 } 186 187 @Override 188 protected void updateEnabledState() { 189 setEnabled(Main.isDisplayingMapView()); 190 } 191 192 @Override 193 protected void installAdapters() { 194 super.installAdapters(); 195 // make this action listen to mapframe change events 196 Main.addMapFrameListener(new MapFrameListener() { 197 @Override 198 public void mapFrameInitialized(MapFrame oldFrame, MapFrame newFrame) { 199 updateEnabledState(); 200 } 201 }); 202 } 203}