1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.history;
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3 | import static org.openstreetmap.josm.tools.I18n.tr;
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4 |
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5 | import java.awt.Color;
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6 | import java.awt.GridBagConstraints;
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7 | import java.awt.GridBagLayout;
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8 | import java.awt.Insets;
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9 | import java.util.Observable;
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10 | import java.util.Observer;
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11 |
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12 | import javax.swing.BorderFactory;
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13 | import javax.swing.JLabel;
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14 | import javax.swing.JPanel;
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15 |
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16 | import org.openstreetmap.josm.data.coor.CoordinateFormat;
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17 | import org.openstreetmap.josm.data.coor.LatLon;
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18 | import org.openstreetmap.josm.data.osm.history.HistoryNode;
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19 | import org.openstreetmap.josm.data.osm.history.HistoryOsmPrimitive;
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20 | import org.openstreetmap.josm.gui.NavigatableComponent;
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21 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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22 |
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23 | /**
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24 | * An UI widget for displaying differences in the coordinates of two
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25 | * {@link HistoryNode}s.
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26 | *
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27 | */
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28 | public class CoordinateInfoViewer extends JPanel {
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29 |
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30 | /** background color used when the coordinates are different */
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31 | public static final Color BGCOLOR_DIFFERENCE = new Color(255,197,197);
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32 |
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33 | /** the model */
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34 | private HistoryBrowserModel model;
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35 | /** the common info panel for the history node in role REFERENCE_POINT_IN_TIME */
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36 | private VersionInfoPanel referenceInfoPanel;
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37 | /** the common info panel for the history node in role CURRENT_POINT_IN_TIME */
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38 | private VersionInfoPanel currentInfoPanel;
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39 | /** the info panel for coordinates for the node in role REFERENCE_POINT_IN_TIME */
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40 | private LatLonViewer referenceLatLonViewer;
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41 | /** the info panel for coordinates for the node in role CURRENT_POINT_IN_TIME */
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42 | private LatLonViewer currentLatLonViewer;
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43 | /** the info panel for distance between the two coordinates */
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44 | private DistanceViewer distanceViewer;
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45 |
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46 | protected void build() {
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47 | setLayout(new GridBagLayout());
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48 | GridBagConstraints gc = new GridBagConstraints();
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49 |
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50 | // ---------------------------
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51 | gc.gridx = 0;
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52 | gc.gridy = 0;
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53 | gc.gridwidth = 1;
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54 | gc.gridheight = 1;
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55 | gc.weightx = 0.5;
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56 | gc.weighty = 0.0;
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57 | gc.insets = new Insets(5,5,5,0);
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58 | gc.fill = GridBagConstraints.HORIZONTAL;
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59 | gc.anchor = GridBagConstraints.FIRST_LINE_START;
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60 | referenceInfoPanel = new VersionInfoPanel(model, PointInTimeType.REFERENCE_POINT_IN_TIME);
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61 | add(referenceInfoPanel,gc);
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62 |
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63 | gc.gridx = 1;
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64 | gc.gridy = 0;
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65 | gc.fill = GridBagConstraints.HORIZONTAL;
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66 | gc.weightx = 0.5;
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67 | gc.weighty = 0.0;
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68 | gc.anchor = GridBagConstraints.FIRST_LINE_START;
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69 | currentInfoPanel = new VersionInfoPanel(model, PointInTimeType.CURRENT_POINT_IN_TIME);
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70 | add(currentInfoPanel,gc);
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71 |
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72 | // ---------------------------
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73 | // the two coordinate panels
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74 | gc.gridx = 0;
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75 | gc.gridy = 1;
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76 | gc.weightx = 0.5;
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77 | gc.weighty = 1.0;
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78 | gc.fill = GridBagConstraints.BOTH;
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79 | gc.anchor = GridBagConstraints.NORTHWEST;
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80 | add(referenceLatLonViewer = new LatLonViewer(model, PointInTimeType.REFERENCE_POINT_IN_TIME), gc);
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81 |
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82 | gc.gridx = 1;
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83 | gc.gridy = 1;
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84 | gc.weightx = 0.5;
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85 | gc.weighty = 1.0;
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86 | gc.fill = GridBagConstraints.BOTH;
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87 | gc.anchor = GridBagConstraints.NORTHWEST;
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88 | add(currentLatLonViewer = new LatLonViewer(model, PointInTimeType.CURRENT_POINT_IN_TIME), gc);
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89 |
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90 | // --------------------
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91 | // the distance panel
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92 | gc.gridx = 0;
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93 | gc.gridy = 2;
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94 | gc.gridwidth = 2;
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95 | gc.fill = GridBagConstraints.HORIZONTAL;
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96 | gc.weightx = 1.0;
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97 | gc.weighty = 0.0;
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98 | add(distanceViewer = new DistanceViewer(model), gc);
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99 | }
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100 |
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101 | /**
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102 | *
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103 | * @param model the model. Must not be null.
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104 | * @throws IllegalArgumentException if model is null
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105 | */
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106 | public CoordinateInfoViewer(HistoryBrowserModel model) {
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107 | CheckParameterUtil.ensureParameterNotNull(model, "model");
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108 | setModel(model);
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109 | build();
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110 | registerAsObserver(model);
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111 | }
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112 |
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113 | protected void unregisterAsObserver(HistoryBrowserModel model) {
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114 | if (currentInfoPanel != null) {
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115 | model.deleteObserver(currentInfoPanel);
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116 | }
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117 | if (referenceInfoPanel != null) {
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118 | model.deleteObserver(referenceInfoPanel);
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119 | }
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120 | if (currentLatLonViewer != null) {
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121 | model.deleteObserver(currentLatLonViewer);
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122 | }
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123 | if (referenceLatLonViewer != null) {
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124 | model.deleteObserver(referenceLatLonViewer);
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125 | }
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126 | if (distanceViewer != null) {
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127 | model.deleteObserver(distanceViewer);
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128 | }
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129 | }
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130 |
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131 | protected void registerAsObserver(HistoryBrowserModel model) {
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132 | if (currentInfoPanel != null) {
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133 | model.addObserver(currentInfoPanel);
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134 | }
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135 | if (referenceInfoPanel != null) {
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136 | model.addObserver(referenceInfoPanel);
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137 | }
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138 | if (currentLatLonViewer != null) {
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139 | model.addObserver(currentLatLonViewer);
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140 | }
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141 | if (referenceLatLonViewer != null) {
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142 | model.addObserver(referenceLatLonViewer);
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143 | }
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144 | if (distanceViewer != null) {
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145 | model.addObserver(distanceViewer);
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146 | }
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147 | }
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148 |
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149 | /**
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150 | * Sets the model for this viewer
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151 | *
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152 | * @param model the model.
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153 | */
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154 | public void setModel(HistoryBrowserModel model) {
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155 | if (this.model != null) {
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156 | unregisterAsObserver(model);
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157 | }
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158 | this.model = model;
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159 | if (this.model != null) {
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160 | registerAsObserver(model);
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161 | }
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162 | }
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163 |
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164 | /**
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165 | * A UI widgets which displays the Lan/Lon-coordinates of a
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166 | * {@link HistoryNode}.
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167 | *
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168 | */
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169 | private static class LatLonViewer extends JPanel implements Observer{
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170 |
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171 | private JLabel lblLat;
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172 | private JLabel lblLon;
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173 | private HistoryBrowserModel model;
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174 | private PointInTimeType role;
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175 |
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176 | protected HistoryOsmPrimitive getPrimitive() {
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177 | if (model == null || role == null)
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178 | return null;
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179 | return model.getPointInTime(role);
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180 | }
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181 |
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182 | protected HistoryOsmPrimitive getOppositePrimitive() {
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183 | if (model == null || role == null)
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184 | return null;
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185 | return model.getPointInTime(role.opposite());
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186 | }
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187 |
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188 | protected void build() {
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189 | setLayout(new GridBagLayout());
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190 | setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
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191 | GridBagConstraints gc = new GridBagConstraints();
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192 |
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193 | // --------
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194 | gc.gridx = 0;
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195 | gc.gridy = 0;
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196 | gc.fill = GridBagConstraints.NONE;
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197 | gc.weightx = 0.0;
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198 | gc.insets = new Insets(5,5,5,5);
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199 | gc.anchor = GridBagConstraints.NORTHWEST;
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200 | add(new JLabel(tr("Latitude: ")), gc);
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201 |
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202 | // --------
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203 | gc.gridx = 1;
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204 | gc.gridy = 0;
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205 | gc.fill = GridBagConstraints.HORIZONTAL;
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206 | gc.weightx = 1.0;
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207 | add(lblLat = new JLabel(), gc);
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208 | lblLat.setBackground(Color.WHITE);
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209 | lblLat.setOpaque(true);
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210 | lblLat.setBorder(BorderFactory.createEmptyBorder(2,2,2,2));
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211 |
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212 | // --------
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213 | gc.gridx = 0;
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214 | gc.gridy = 1;
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215 | gc.fill = GridBagConstraints.NONE;
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216 | gc.weightx = 0.0;
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217 | gc.anchor = GridBagConstraints.NORTHWEST;
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218 | add(new JLabel(tr("Longitude: ")), gc);
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219 |
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220 | // --------
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221 | gc.gridx = 1;
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222 | gc.gridy = 1;
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223 | gc.fill = GridBagConstraints.HORIZONTAL;
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224 | gc.weightx = 1.0;
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225 | add(lblLon = new JLabel(), gc);
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226 | lblLon.setBackground(Color.WHITE);
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227 | lblLon.setOpaque(true);
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228 | lblLon.setBorder(BorderFactory.createEmptyBorder(2,2,2,2));
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229 |
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230 | // fill the remaining space
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231 | gc.gridx = 0;
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232 | gc.gridy = 2;
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233 | gc.gridwidth = 2;
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234 | gc.fill = GridBagConstraints.BOTH;
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235 | gc.weightx = 1.0;
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236 | gc.weighty = 1.0;
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237 | add(new JPanel(), gc);
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238 | }
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239 |
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240 | /**
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241 | *
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242 | * @param model a model
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243 | * @param role the role for this viewer.
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244 | */
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245 | public LatLonViewer(HistoryBrowserModel model, PointInTimeType role) {
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246 | build();
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247 | this.model = model;
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248 | this.role = role;
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249 | }
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250 |
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251 | protected void refresh() {
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252 | HistoryOsmPrimitive p = getPrimitive();
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253 | HistoryOsmPrimitive opposite = getOppositePrimitive();
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254 | if (!(p instanceof HistoryNode)) return;
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255 | if (!(opposite instanceof HistoryNode)) return;
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256 | HistoryNode node = (HistoryNode)p;
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257 | HistoryNode oppositeNode = (HistoryNode) opposite;
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258 |
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259 | LatLon coord = node.getCoords();
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260 | LatLon oppositeCoord = oppositeNode.getCoords();
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261 |
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262 | // display the coordinates
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263 | //
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264 | lblLat.setText(coord != null ? coord.latToString(CoordinateFormat.DECIMAL_DEGREES) : tr("(none)"));
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265 | lblLon.setText(coord != null ? coord.lonToString(CoordinateFormat.DECIMAL_DEGREES) : tr("(none)"));
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266 |
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267 | // update background color to reflect differences in the coordinates
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268 | //
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269 | if (coord == oppositeCoord ||
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270 | (coord != null && oppositeCoord != null && coord.lat() == oppositeCoord.lat())) {
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271 | lblLat.setBackground(Color.WHITE);
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272 | } else {
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273 | lblLat.setBackground(BGCOLOR_DIFFERENCE);
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274 | }
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275 | if (coord == oppositeCoord ||
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276 | (coord != null && oppositeCoord != null && coord.lon() == oppositeCoord.lon())) {
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277 | lblLon.setBackground(Color.WHITE);
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278 | } else {
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279 | lblLon.setBackground(BGCOLOR_DIFFERENCE);
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280 | }
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281 | }
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282 |
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283 | @Override
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284 | public void update(Observable o, Object arg) {
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285 | refresh();
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286 | }
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287 | }
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288 |
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289 | private static class DistanceViewer extends LatLonViewer {
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290 |
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291 | private JLabel lblDistance;
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292 |
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293 | public DistanceViewer(HistoryBrowserModel model) {
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294 | super(model, PointInTimeType.REFERENCE_POINT_IN_TIME);
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295 | }
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296 |
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297 | @Override
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298 | protected void build() {
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299 | setLayout(new GridBagLayout());
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300 | setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
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301 | GridBagConstraints gc = new GridBagConstraints();
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302 |
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303 | // --------
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304 | gc.gridx = 0;
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305 | gc.gridy = 0;
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306 | gc.fill = GridBagConstraints.NONE;
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307 | gc.weightx = 0.0;
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308 | gc.insets = new Insets(5,5,5,5);
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309 | gc.anchor = GridBagConstraints.NORTHWEST;
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310 | add(new JLabel(tr("Distance: ")), gc);
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311 |
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312 | // --------
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313 | gc.gridx = 1;
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314 | gc.gridy = 0;
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315 | gc.fill = GridBagConstraints.HORIZONTAL;
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316 | gc.weightx = 1.0;
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317 | add(lblDistance = new JLabel(), gc);
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318 | lblDistance.setBackground(Color.WHITE);
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319 | lblDistance.setOpaque(true);
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320 | lblDistance.setBorder(BorderFactory.createEmptyBorder(2,2,2,2));
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321 | }
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322 |
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323 | @Override
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324 | protected void refresh() {
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325 | HistoryOsmPrimitive p = getPrimitive();
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326 | HistoryOsmPrimitive opposite = getOppositePrimitive();
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327 | if (!(p instanceof HistoryNode)) return;
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328 | if (!(opposite instanceof HistoryNode)) return;
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329 | HistoryNode node = (HistoryNode) p;
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330 | HistoryNode oppositeNode = (HistoryNode) opposite;
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331 |
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332 | LatLon coord = node.getCoords();
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333 | LatLon oppositeCoord = oppositeNode.getCoords();
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334 |
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335 | // update distance
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336 | //
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337 | if (coord != null && oppositeCoord != null) {
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338 | double distance = coord.greatCircleDistance(oppositeCoord);
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339 | if (distance > 0) {
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340 | lblDistance.setBackground(BGCOLOR_DIFFERENCE);
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341 | } else {
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342 | lblDistance.setBackground(Color.WHITE);
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343 | }
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344 | lblDistance.setText(NavigatableComponent.getDistText(distance));
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345 | } else {
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346 | lblDistance.setBackground(coord != oppositeCoord ? BGCOLOR_DIFFERENCE : Color.WHITE);
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347 | lblDistance.setText(tr("(none)"));
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348 | }
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349 | }
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350 | }
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351 | }
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