source: josm/trunk/src/org/openstreetmap/josm/actions/JumpToAction.java@ 8495

Last change on this file since 8495 was 8443, checked in by Don-vip, 9 years ago

remove extra whitespaces
  • Property svn:eol-style set to native
File size: 7.7 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions;
3
4import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
5import static org.openstreetmap.josm.tools.I18n.tr;
6
7import java.awt.BorderLayout;
8import java.awt.GridBagLayout;
9import java.awt.event.ActionEvent;
10import java.awt.event.KeyEvent;
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.MapFrame;
22import org.openstreetmap.josm.gui.MapFrameListener;
23import org.openstreetmap.josm.gui.MapView;
24import org.openstreetmap.josm.gui.widgets.JosmTextField;
25import org.openstreetmap.josm.tools.GBC;
26import org.openstreetmap.josm.tools.ImageProvider;
27import org.openstreetmap.josm.tools.OsmUrlToBounds;
28import org.openstreetmap.josm.tools.Shortcut;
29
30/**
31 * Allows to jump to a specific location.
32 * @since 2575
33 */
34public class JumpToAction extends JosmAction {
35
36 /**
37 * Constructs a new {@code JumpToAction}.
38 */
39 public JumpToAction() {
40 super(tr("Jump To Position"), (ImageProvider) null, tr("Opens a dialog that allows to jump to a specific location"),
41 Shortcut.registerShortcut("tools:jumpto", tr("Tool: {0}", tr("Jump To Position")),
42 KeyEvent.VK_J, Shortcut.CTRL), true, "action/jumpto", true);
43 putValue("help", ht("/Action/JumpToPosition"));
44 }
45
46 private final JosmTextField url = new JosmTextField();
47 private final JosmTextField lat = new JosmTextField();
48 private final JosmTextField lon = new JosmTextField();
49 private final JosmTextField zm = new JosmTextField();
50
51 class OsmURLListener implements DocumentListener {
52 @Override public void changedUpdate(DocumentEvent e) { parseURL(); }
53 @Override public void insertUpdate(DocumentEvent e) { parseURL(); }
54 @Override public void removeUpdate(DocumentEvent e) { parseURL(); }
55 }
56
57 class OsmLonLatListener implements DocumentListener {
58 @Override public void changedUpdate(DocumentEvent e) { updateUrl(false); }
59 @Override public void insertUpdate(DocumentEvent e) { updateUrl(false); }
60 @Override public void removeUpdate(DocumentEvent e) { updateUrl(false); }
61 }
62
63 /**
64 * Displays the "Jump to" dialog.
65 */
66 public void showJumpToDialog() {
67 if (!Main.isDisplayingMapView()) {
68 return;
69 }
70 MapView mv = Main.map.mapView;
71 LatLon curPos = mv.getProjection().eastNorth2latlon(mv.getCenter());
72 lat.setText(Double.toString(curPos.lat()));
73 lon.setText(Double.toString(curPos.lon()));
74
75 double dist = mv.getDist100Pixel();
76 double zoomFactor = 1/dist;
77
78 zm.setText(Long.toString(Math.round(dist*100)/100));
79 updateUrl(true);
80
81 JPanel panel = new JPanel(new BorderLayout());
82 panel.add(new JLabel("<html>"
83 + tr("Enter Lat/Lon to jump to position.")
84 + "<br>"
85 + tr("You can also paste an URL from www.openstreetmap.org")
86 + "<br>"
87 + "</html>"),
88 BorderLayout.NORTH);
89
90 OsmLonLatListener x = new OsmLonLatListener();
91 lat.getDocument().addDocumentListener(x);
92 lon.getDocument().addDocumentListener(x);
93 zm.getDocument().addDocumentListener(x);
94 url.getDocument().addDocumentListener(new OsmURLListener());
95
96 JPanel p = new JPanel(new GridBagLayout());
97 panel.add(p, BorderLayout.NORTH);
98
99 p.add(new JLabel(tr("Latitude")), GBC.eol());
100 p.add(lat, GBC.eol().fill(GBC.HORIZONTAL));
101
102 p.add(new JLabel(tr("Longitude")), GBC.eol());
103 p.add(lon, GBC.eol().fill(GBC.HORIZONTAL));
104
105 p.add(new JLabel(tr("Zoom (in metres)")), GBC.eol());
106 p.add(zm, GBC.eol().fill(GBC.HORIZONTAL));
107
108 p.add(new JLabel(tr("URL")), GBC.eol());
109 p.add(url, GBC.eol().fill(GBC.HORIZONTAL));
110
111 Object[] buttons = {tr("Jump there"), tr("Cancel")};
112 LatLon ll = null;
113 double zoomLvl = 100;
114 while(ll == null) {
115 int option = JOptionPane.showOptionDialog(
116 Main.parent,
117 panel,
118 tr("Jump to Position"),
119 JOptionPane.OK_CANCEL_OPTION,
120 JOptionPane.PLAIN_MESSAGE,
121 null,
122 buttons,
123 buttons[0]);
124
125 if (option != JOptionPane.OK_OPTION) return;
126 try {
127 zoomLvl = Double.parseDouble(zm.getText());
128 ll = new LatLon(Double.parseDouble(lat.getText()), Double.parseDouble(lon.getText()));
129 } catch (NumberFormatException ex) {
130 JOptionPane.showMessageDialog(Main.parent, tr("Could not parse Latitude, Longitude or Zoom. Please check."), tr("Unable to parse Lon/Lat"), JOptionPane.ERROR_MESSAGE);
131 }
132 }
133
134 mv.zoomToFactor(mv.getProjection().latlon2eastNorth(ll), zoomFactor * zoomLvl);
135 }
136
137 private void parseURL() {
138 if (!url.hasFocus()) return;
139 String urlText = url.getText();
140 Bounds b = OsmUrlToBounds.parse(urlText);
141 if (b != null) {
142 lat.setText(Double.toString((b.getMinLat() + b.getMaxLat())/2));
143 lon.setText(Double.toString((b.getMinLon() + b.getMaxLon())/2));
144
145 int zoomLvl = 16;
146 int hashIndex = urlText.indexOf("#map");
147 if (hashIndex >= 0) {
148 zoomLvl = Integer.parseInt(urlText.substring(hashIndex+5, urlText.indexOf('/', hashIndex)));
149 } else {
150 String[] args = urlText.substring(urlText.indexOf('?')+1).split("&");
151 for (String arg : args) {
152 int eq = arg.indexOf('=');
153 if (eq == -1 || !"zoom".equalsIgnoreCase(arg.substring(0, eq))) continue;
154
155 zoomLvl = Integer.parseInt(arg.substring(eq + 1));
156 break;
157 }
158 }
159
160 // 10 000 000 = 10 000 * 1000 = World * (km -> m)
161 zm.setText(Double.toString(Math.round(10000000 * Math.pow(2, (-1) * zoomLvl))));
162 }
163 }
164
165 private void updateUrl(boolean force) {
166 if(!lat.hasFocus() && !lon.hasFocus() && !zm.hasFocus() && !force) return;
167 try {
168 double dlat = Double.parseDouble(lat.getText());
169 double dlon = Double.parseDouble(lon.getText());
170 double m = Double.parseDouble(zm.getText());
171 // Inverse function to the one above. 18 is the current maximum zoom
172 // available on standard renderers, so choose this is in case m
173 // should be zero
174 int zoomLvl = 18;
175 if(m > 0)
176 zoomLvl = (int)Math.round((-1) * Math.log(m/10000000)/Math.log(2));
177
178 url.setText(OsmUrlToBounds.getURL(dlat, dlon, zoomLvl));
179 } catch (NumberFormatException x) {
180 Main.debug(x.getMessage());
181 }
182 }
183
184 @Override
185 public void actionPerformed(ActionEvent e) {
186 showJumpToDialog();
187 }
188
189 @Override
190 protected void updateEnabledState() {
191 setEnabled(Main.isDisplayingMapView());
192 }
193
194 @Override
195 protected void installAdapters() {
196 super.installAdapters();
197 // make this action listen to mapframe change events
198 Main.addMapFrameListener(new MapFrameListener() {
199 @Override
200 public void mapFrameInitialized(MapFrame oldFrame, MapFrame newFrame) {
201 updateEnabledState();
202 }
203 });
204 }
205}
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