1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions;
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3 |
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4 | import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
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5 | import static org.openstreetmap.josm.tools.I18n.tr;
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6 |
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7 | import java.awt.BorderLayout;
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8 | import java.awt.GridBagLayout;
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9 | import java.awt.event.ActionEvent;
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10 | import java.awt.event.KeyEvent;
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11 |
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12 | import javax.swing.JLabel;
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13 | import javax.swing.JOptionPane;
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14 | import javax.swing.JPanel;
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15 | import javax.swing.event.DocumentEvent;
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16 | import javax.swing.event.DocumentListener;
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17 |
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18 | import org.openstreetmap.josm.Main;
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19 | import org.openstreetmap.josm.data.Bounds;
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20 | import org.openstreetmap.josm.data.coor.LatLon;
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21 | import org.openstreetmap.josm.gui.MapView;
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22 | import org.openstreetmap.josm.gui.widgets.JosmTextField;
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23 | import org.openstreetmap.josm.tools.GBC;
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24 | import org.openstreetmap.josm.tools.ImageProvider;
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25 | import org.openstreetmap.josm.tools.OsmUrlToBounds;
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26 | import org.openstreetmap.josm.tools.Shortcut;
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27 |
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28 | /**
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29 | * Allows to jump to a specific location.
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30 | * @since 2575
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31 | */
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32 | public class JumpToAction extends JosmAction {
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33 |
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34 | /**
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35 | * Constructs a new {@code JumpToAction}.
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36 | */
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37 | public JumpToAction() {
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38 | super(tr("Jump To Position"), (ImageProvider) null, tr("Opens a dialog that allows to jump to a specific location"),
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39 | Shortcut.registerShortcut("tools:jumpto", tr("Tool: {0}", tr("Jump To Position")),
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40 | KeyEvent.VK_J, Shortcut.CTRL), true, "action/jumpto", true);
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41 | putValue("help", ht("/Action/JumpToPosition"));
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42 | }
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43 |
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44 | private final JosmTextField url = new JosmTextField();
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45 | private final JosmTextField lat = new JosmTextField();
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46 | private final JosmTextField lon = new JosmTextField();
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47 | private final JosmTextField zm = new JosmTextField();
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48 |
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49 | class OsmURLListener implements DocumentListener {
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50 | @Override
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51 | public void changedUpdate(DocumentEvent e) {
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52 | parseURL();
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53 | }
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54 |
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55 | @Override
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56 | public void insertUpdate(DocumentEvent e) {
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57 | parseURL();
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58 | }
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59 |
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60 | @Override
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61 | public void removeUpdate(DocumentEvent e) {
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62 | parseURL();
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63 | }
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64 | }
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65 |
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66 | class OsmLonLatListener implements DocumentListener {
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67 | @Override
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68 | public void changedUpdate(DocumentEvent e) {
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69 | updateUrl(false);
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70 | }
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71 |
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72 | @Override
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73 | public void insertUpdate(DocumentEvent e) {
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74 | updateUrl(false);
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75 | }
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76 |
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77 | @Override
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78 | public void removeUpdate(DocumentEvent e) {
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79 | updateUrl(false);
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80 | }
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81 | }
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82 |
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83 | /**
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84 | * Displays the "Jump to" dialog.
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85 | */
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86 | public void showJumpToDialog() {
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87 | if (!Main.isDisplayingMapView()) {
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88 | return;
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89 | }
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90 | MapView mv = Main.map.mapView;
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91 | LatLon curPos = mv.getProjection().eastNorth2latlon(mv.getCenter());
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92 | lat.setText(Double.toString(curPos.lat()));
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93 | lon.setText(Double.toString(curPos.lon()));
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94 |
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95 | double dist = mv.getDist100Pixel();
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96 | zm.setText(Long.toString(Math.round(dist*100)/100));
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97 | updateUrl(true);
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98 |
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99 | JPanel panel = new JPanel(new BorderLayout());
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100 | panel.add(new JLabel("<html>"
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101 | + tr("Enter Lat/Lon to jump to position.")
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102 | + "<br>"
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103 | + tr("You can also paste an URL from www.openstreetmap.org")
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104 | + "<br>"
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105 | + "</html>"),
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106 | BorderLayout.NORTH);
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107 |
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108 | OsmLonLatListener x = new OsmLonLatListener();
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109 | lat.getDocument().addDocumentListener(x);
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110 | lon.getDocument().addDocumentListener(x);
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111 | zm.getDocument().addDocumentListener(x);
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112 | url.getDocument().addDocumentListener(new OsmURLListener());
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113 |
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114 | JPanel p = new JPanel(new GridBagLayout());
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115 | panel.add(p, BorderLayout.NORTH);
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116 |
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117 | p.add(new JLabel(tr("Latitude")), GBC.eol());
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118 | p.add(lat, GBC.eol().fill(GBC.HORIZONTAL));
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119 |
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120 | p.add(new JLabel(tr("Longitude")), GBC.eol());
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121 | p.add(lon, GBC.eol().fill(GBC.HORIZONTAL));
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122 |
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123 | p.add(new JLabel(tr("Zoom (in metres)")), GBC.eol());
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124 | p.add(zm, GBC.eol().fill(GBC.HORIZONTAL));
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125 |
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126 | p.add(new JLabel(tr("URL")), GBC.eol());
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127 | p.add(url, GBC.eol().fill(GBC.HORIZONTAL));
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128 |
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129 | Object[] buttons = {tr("Jump there"), tr("Cancel")};
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130 | LatLon ll = null;
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131 | double zoomLvl = 100;
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132 | while (ll == null) {
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133 | int option = JOptionPane.showOptionDialog(
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134 | Main.parent,
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135 | panel,
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136 | tr("Jump to Position"),
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137 | JOptionPane.OK_CANCEL_OPTION,
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138 | JOptionPane.PLAIN_MESSAGE,
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139 | null,
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140 | buttons,
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141 | buttons[0]);
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142 |
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143 | if (option != JOptionPane.OK_OPTION) return;
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144 | try {
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145 | zoomLvl = Double.parseDouble(zm.getText());
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146 | ll = new LatLon(Double.parseDouble(lat.getText()), Double.parseDouble(lon.getText()));
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147 | } catch (NumberFormatException ex) {
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148 | try {
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149 | ll = LatLon.parse(lat.getText() + "; " + lon.getText());
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150 | } catch (IllegalArgumentException ex2) {
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151 | JOptionPane.showMessageDialog(Main.parent,
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152 | tr("Could not parse Latitude, Longitude or Zoom. Please check."),
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153 | tr("Unable to parse Lon/Lat"), JOptionPane.ERROR_MESSAGE);
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154 | }
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155 | }
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156 | }
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157 |
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158 | double zoomFactor = 1/dist;
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159 | mv.zoomToFactor(mv.getProjection().latlon2eastNorth(ll), zoomFactor * zoomLvl);
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160 | }
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161 |
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162 | private void parseURL() {
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163 | if (!url.hasFocus()) return;
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164 | String urlText = url.getText();
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165 | Bounds b = OsmUrlToBounds.parse(urlText);
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166 | if (b != null) {
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167 | lat.setText(Double.toString((b.getMinLat() + b.getMaxLat())/2));
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168 | lon.setText(Double.toString((b.getMinLon() + b.getMaxLon())/2));
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169 |
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170 | int zoomLvl = 16;
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171 | int hashIndex = urlText.indexOf("#map");
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172 | if (hashIndex >= 0) {
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173 | zoomLvl = Integer.parseInt(urlText.substring(hashIndex+5, urlText.indexOf('/', hashIndex)));
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174 | } else {
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175 | String[] args = urlText.substring(urlText.indexOf('?')+1).split("&");
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176 | for (String arg : args) {
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177 | int eq = arg.indexOf('=');
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178 | if (eq == -1 || !"zoom".equalsIgnoreCase(arg.substring(0, eq))) continue;
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179 |
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180 | zoomLvl = Integer.parseInt(arg.substring(eq + 1));
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181 | break;
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182 | }
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183 | }
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184 |
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185 | // 10 000 000 = 10 000 * 1000 = World * (km -> m)
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186 | zm.setText(Double.toString(Math.round(10000000d * Math.pow(2d, (-1d) * zoomLvl))));
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187 | }
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188 | }
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189 |
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190 | private void updateUrl(boolean force) {
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191 | if (!lat.hasFocus() && !lon.hasFocus() && !zm.hasFocus() && !force) return;
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192 | try {
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193 | double dlat = Double.parseDouble(lat.getText());
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194 | double dlon = Double.parseDouble(lon.getText());
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195 | double m = Double.parseDouble(zm.getText());
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196 | // Inverse function to the one above. 18 is the current maximum zoom
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197 | // available on standard renderers, so choose this is in case m should be zero
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198 | int zoomLvl = 18;
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199 | if (m > 0)
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200 | zoomLvl = (int) Math.round((-1) * Math.log(m/10_000_000)/Math.log(2));
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201 |
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202 | url.setText(OsmUrlToBounds.getURL(dlat, dlon, zoomLvl));
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203 | } catch (NumberFormatException x) {
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204 | Main.debug(x.getMessage());
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205 | }
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206 | }
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207 |
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208 | @Override
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209 | public void actionPerformed(ActionEvent e) {
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210 | showJumpToDialog();
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211 | }
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212 |
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213 | @Override
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214 | protected void updateEnabledState() {
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215 | setEnabled(Main.isDisplayingMapView());
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216 | }
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217 |
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218 | @Override
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219 | protected void installAdapters() {
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220 | super.installAdapters();
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221 | // make this action listen to mapframe change events
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222 | Main.addMapFrameListener((o, n) -> updateEnabledState());
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223 | }
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224 | }
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