source: josm/trunk/src/org/openstreetmap/josm/actions/JumpToAction.java@ 6264

Last change on this file since 6264 was 6246, checked in by Don-vip, 11 years ago

Sonar/FindBugs - various bugfixes / violation fixes
  • Property svn:eol-style set to native
File size: 6.8 KB
Line 
1// License: GPL. Copyright 2007 by Immanuel Scholz and others
2package org.openstreetmap.josm.actions;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.BorderLayout;
7import java.awt.GridBagLayout;
8import java.awt.event.ActionEvent;
9import java.awt.event.KeyEvent;
10import javax.swing.Icon;
11
12import javax.swing.JLabel;
13import javax.swing.JOptionPane;
14import javax.swing.JPanel;
15import javax.swing.event.DocumentEvent;
16import javax.swing.event.DocumentListener;
17
18import org.openstreetmap.josm.Main;
19import org.openstreetmap.josm.data.Bounds;
20import org.openstreetmap.josm.data.coor.LatLon;
21import org.openstreetmap.josm.gui.MapView;
22
23import org.openstreetmap.josm.tools.GBC;
24import org.openstreetmap.josm.tools.OsmUrlToBounds;
25import org.openstreetmap.josm.tools.Shortcut;
26import org.openstreetmap.josm.gui.widgets.JosmTextField;
27
28public class JumpToAction extends JosmAction {
29 /**
30 * Constructs a new {@code JumpToAction}.
31 */
32 public JumpToAction() {
33 super(tr("Jump To Position"), (Icon) null, tr("Opens a dialog that allows to jump to a specific location"), Shortcut.registerShortcut("tools:jumpto", tr("Tool: {0}", tr("Jump To Position")),
34 KeyEvent.VK_J, Shortcut.CTRL), true, "action/jumpto", false);
35 }
36
37 private JosmTextField url = new JosmTextField();
38 private JosmTextField lat = new JosmTextField();
39 private JosmTextField lon = new JosmTextField();
40 private JosmTextField zm = new JosmTextField();
41
42 private double zoomFactor = 0;
43 public void showJumpToDialog() {
44 MapView mv = Main.map.mapView;
45 if(mv == null)
46 return;
47 LatLon curPos=mv.getProjection().eastNorth2latlon(mv.getCenter());
48 lat.setText(java.lang.Double.toString(curPos.lat()));
49 lon.setText(java.lang.Double.toString(curPos.lon()));
50
51 double dist = mv.getDist100Pixel();
52 zoomFactor = 1/dist;
53
54 zm.setText(java.lang.Long.toString(Math.round(dist*100)/100));
55 updateUrl(true);
56
57 JPanel panel = new JPanel(new BorderLayout());
58 panel.add(new JLabel("<html>"
59 + tr("Enter Lat/Lon to jump to position.")
60 + "<br>"
61 + tr("You can also paste an URL from www.openstreetmap.org")
62 + "<br>"
63 + "</html>"),
64 BorderLayout.NORTH);
65
66 class OsmURLListener implements DocumentListener {
67 @Override public void changedUpdate(DocumentEvent e) { parseURL(); }
68 @Override public void insertUpdate(DocumentEvent e) { parseURL(); }
69 @Override public void removeUpdate(DocumentEvent e) { parseURL(); }
70 }
71
72 class OsmLonLatListener implements DocumentListener {
73 @Override public void changedUpdate(DocumentEvent e) { updateUrl(false); }
74 @Override public void insertUpdate(DocumentEvent e) { updateUrl(false); }
75 @Override public void removeUpdate(DocumentEvent e) { updateUrl(false); }
76 }
77
78 OsmLonLatListener x = new OsmLonLatListener();
79 lat.getDocument().addDocumentListener(x);
80 lon.getDocument().addDocumentListener(x);
81 zm.getDocument().addDocumentListener(x);
82 url.getDocument().addDocumentListener(new OsmURLListener());
83
84 JPanel p = new JPanel(new GridBagLayout());
85 panel.add(p, BorderLayout.NORTH);
86
87 p.add(new JLabel(tr("Latitude")), GBC.eol());
88 p.add(lat, GBC.eol().fill(GBC.HORIZONTAL));
89
90 p.add(new JLabel(tr("Longitude")), GBC.eol());
91 p.add(lon, GBC.eol().fill(GBC.HORIZONTAL));
92
93 p.add(new JLabel(tr("Zoom (in metres)")), GBC.eol());
94 p.add(zm, GBC.eol().fill(GBC.HORIZONTAL));
95
96 p.add(new JLabel(tr("URL")), GBC.eol());
97 p.add(url, GBC.eol().fill(GBC.HORIZONTAL));
98
99 Object[] buttons = { tr("Jump there"), tr("Cancel") };
100 LatLon ll = null;
101 double zoomLvl = 100;
102 while(ll == null) {
103 int option = JOptionPane.showOptionDialog(
104 Main.parent,
105 panel,
106 tr("Jump to Position"),
107 JOptionPane.OK_CANCEL_OPTION,
108 JOptionPane.PLAIN_MESSAGE,
109 null,
110 buttons,
111 buttons[0]);
112
113 if (option != JOptionPane.OK_OPTION) return;
114 try {
115 zoomLvl = Double.parseDouble(zm.getText());
116 ll = new LatLon(Double.parseDouble(lat.getText()), Double.parseDouble(lon.getText()));
117 } catch (NumberFormatException ex) {
118 JOptionPane.showMessageDialog(Main.parent, tr("Could not parse Latitude, Longitude or Zoom. Please check."), tr("Unable to parse Lon/Lat"), JOptionPane.ERROR_MESSAGE);
119 }
120 }
121
122 mv.zoomToFactor(mv.getProjection().latlon2eastNorth(ll), zoomFactor * zoomLvl);
123 }
124
125 private void parseURL() {
126 if(!url.hasFocus()) return;
127 Bounds b = OsmUrlToBounds.parse(url.getText());
128 if (b != null) {
129 lat.setText(Double.toString((b.getMinLat() + b.getMaxLat())/2));
130 lon.setText(Double.toString((b.getMinLon() + b.getMaxLon())/2));
131
132 int zoomLvl = 16;
133 String[] args = url.getText().substring(url.getText().indexOf('?')+1).split("&");
134 for (String arg : args) {
135 int eq = arg.indexOf('=');
136 if (eq == -1 || !arg.substring(0, eq).equalsIgnoreCase("zoom")) continue;
137
138 zoomLvl = Integer.parseInt(arg.substring(eq + 1));
139 break;
140 }
141
142 // 10 000 000 = 10 000 * 1000 = World * (km -> m)
143 zm.setText(Double.toString(Math.round(10000000 * Math.pow(2, (-1) * zoomLvl))));
144 }
145 }
146
147 private void updateUrl(boolean force) {
148 if(!lat.hasFocus() && !lon.hasFocus() && !zm.hasFocus() && !force) return;
149 try {
150 double dlat = Double.parseDouble(lat.getText());
151 double dlon = Double.parseDouble(lon.getText());
152 double m = Double.parseDouble(zm.getText());
153 // Inverse function to the one above. 18 is the current maximum zoom
154 // available on standard renderers, so choose this is in case m
155 // should be zero
156 int zoomLvl = 18;
157 if(m > 0)
158 zoomLvl = (int)Math.round((-1) * Math.log(m/10000000)/Math.log(2));
159
160 int decimals = (int) Math.pow(10, (zoomLvl / 3));
161 dlat = Math.round(dlat * decimals);
162 dlat /= decimals;
163 dlon = Math.round(dlon * decimals);
164 dlon /= decimals;
165 url.setText("http://www.openstreetmap.org/?lat="+dlat+"&lon="+dlon+"&zoom="+zoomLvl);
166 } catch (NumberFormatException x) {}
167 }
168
169 @Override
170 public void actionPerformed(ActionEvent e) {
171 showJumpToDialog();
172 }
173}
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