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 | import javax.swing.UIManager;
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16 |
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17 | import org.openstreetmap.gui.jmapviewer.JMapViewer;
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18 | import org.openstreetmap.gui.jmapviewer.MapMarkerDot;
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19 | import org.openstreetmap.josm.data.coor.CoordinateFormat;
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20 | import org.openstreetmap.josm.data.coor.LatLon;
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21 | import org.openstreetmap.josm.data.osm.history.HistoryNode;
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22 | import org.openstreetmap.josm.data.osm.history.HistoryOsmPrimitive;
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23 | import org.openstreetmap.josm.gui.NavigatableComponent;
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24 | import org.openstreetmap.josm.gui.util.GuiHelper;
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25 | import org.openstreetmap.josm.gui.widgets.JosmTextArea;
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26 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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27 | import org.openstreetmap.josm.tools.Pair;
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28 |
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29 | /**
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30 | * An UI widget for displaying differences in the coordinates of two
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31 | * {@link HistoryNode}s.
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32 | * @since 2243
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33 | */
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34 | public class CoordinateInfoViewer extends JPanel {
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35 |
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36 | /** the model */
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37 | private transient HistoryBrowserModel model;
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38 | /** the common info panel for the history node in role REFERENCE_POINT_IN_TIME */
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39 | private VersionInfoPanel referenceInfoPanel;
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40 | /** the common info panel for the history node in role CURRENT_POINT_IN_TIME */
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41 | private VersionInfoPanel currentInfoPanel;
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42 | /** the info panel for coordinates for the node in role REFERENCE_POINT_IN_TIME */
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43 | private LatLonViewer referenceLatLonViewer;
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44 | /** the info panel for coordinates for the node in role CURRENT_POINT_IN_TIME */
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45 | private LatLonViewer currentLatLonViewer;
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46 | /** the info panel for distance between the two coordinates */
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47 | private DistanceViewer distanceViewer;
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48 | /** the map panel showing the old+new coordinate */
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49 | private MapViewer mapViewer;
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50 |
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51 | protected void build() {
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52 | setLayout(new GridBagLayout());
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53 | GridBagConstraints gc = new GridBagConstraints();
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54 |
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55 | // ---------------------------
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56 | gc.gridx = 0;
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57 | gc.gridy = 0;
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58 | gc.gridwidth = 1;
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59 | gc.gridheight = 1;
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60 | gc.weightx = 0.5;
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61 | gc.weighty = 0.0;
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62 | gc.insets = new Insets(5, 5, 5, 0);
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63 | gc.fill = GridBagConstraints.HORIZONTAL;
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64 | gc.anchor = GridBagConstraints.FIRST_LINE_START;
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65 | referenceInfoPanel = new VersionInfoPanel(model, PointInTimeType.REFERENCE_POINT_IN_TIME);
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66 | add(referenceInfoPanel, gc);
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67 |
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68 | gc.gridx = 1;
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69 | gc.gridy = 0;
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70 | gc.fill = GridBagConstraints.HORIZONTAL;
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71 | gc.weightx = 0.5;
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72 | gc.weighty = 0.0;
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73 | gc.anchor = GridBagConstraints.FIRST_LINE_START;
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74 | currentInfoPanel = new VersionInfoPanel(model, PointInTimeType.CURRENT_POINT_IN_TIME);
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75 | add(currentInfoPanel, gc);
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76 |
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77 | // ---------------------------
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78 | // the two coordinate panels
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79 | gc.gridx = 0;
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80 | gc.gridy = 1;
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81 | gc.weightx = 0.5;
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82 | gc.weighty = 0.0;
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83 | gc.fill = GridBagConstraints.HORIZONTAL;
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84 | gc.anchor = GridBagConstraints.NORTHWEST;
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85 | add(referenceLatLonViewer = new LatLonViewer(model, PointInTimeType.REFERENCE_POINT_IN_TIME), gc);
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86 |
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87 | gc.gridx = 1;
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88 | gc.gridy = 1;
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89 | gc.weightx = 0.5;
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90 | gc.weighty = 0.0;
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91 | gc.fill = GridBagConstraints.HORIZONTAL;
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92 | gc.anchor = GridBagConstraints.NORTHWEST;
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93 | add(currentLatLonViewer = new LatLonViewer(model, PointInTimeType.CURRENT_POINT_IN_TIME), gc);
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94 |
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95 | // --------------------
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96 | // the distance panel
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97 | gc.gridx = 0;
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98 | gc.gridy = 2;
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99 | gc.gridwidth = 2;
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100 | gc.fill = GridBagConstraints.HORIZONTAL;
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101 | gc.weightx = 1.0;
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102 | gc.weighty = 0.0;
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103 | add(distanceViewer = new DistanceViewer(model), gc);
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104 |
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105 | // the map panel
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106 | gc.gridx = 0;
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107 | gc.gridy = 3;
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108 | gc.gridwidth = 2;
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109 | gc.fill = GridBagConstraints.BOTH;
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110 | gc.weightx = 1.0;
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111 | gc.weighty = 1.0;
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112 | add(mapViewer = new MapViewer(model), gc);
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113 | mapViewer.setZoomContolsVisible(false);
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114 | }
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115 |
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116 | /**
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117 | * Constructs a new {@code CoordinateInfoViewer}.
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118 | * @param model the model. Must not be null.
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119 | * @throws IllegalArgumentException if model is null
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120 | */
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121 | public CoordinateInfoViewer(HistoryBrowserModel model) {
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122 | CheckParameterUtil.ensureParameterNotNull(model, "model");
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123 | setModel(model);
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124 | build();
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125 | registerAsObserver(model);
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126 | }
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127 |
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128 | protected void unregisterAsObserver(HistoryBrowserModel model) {
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129 | if (currentInfoPanel != null) {
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130 | model.deleteObserver(currentInfoPanel);
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131 | }
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132 | if (referenceInfoPanel != null) {
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133 | model.deleteObserver(referenceInfoPanel);
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134 | }
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135 | if (currentLatLonViewer != null) {
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136 | model.deleteObserver(currentLatLonViewer);
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137 | }
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138 | if (referenceLatLonViewer != null) {
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139 | model.deleteObserver(referenceLatLonViewer);
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140 | }
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141 | if (distanceViewer != null) {
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142 | model.deleteObserver(distanceViewer);
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143 | }
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144 | if (mapViewer != null) {
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145 | model.deleteObserver(mapViewer);
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146 | }
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147 | }
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148 |
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149 | protected void registerAsObserver(HistoryBrowserModel model) {
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150 | if (currentInfoPanel != null) {
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151 | model.addObserver(currentInfoPanel);
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152 | }
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153 | if (referenceInfoPanel != null) {
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154 | model.addObserver(referenceInfoPanel);
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155 | }
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156 | if (currentLatLonViewer != null) {
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157 | model.addObserver(currentLatLonViewer);
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158 | }
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159 | if (referenceLatLonViewer != null) {
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160 | model.addObserver(referenceLatLonViewer);
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161 | }
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162 | if (distanceViewer != null) {
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163 | model.addObserver(distanceViewer);
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164 | }
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165 | if (mapViewer != null) {
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166 | model.addObserver(mapViewer);
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167 | }
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168 | }
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169 |
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170 | /**
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171 | * Sets the model for this viewer
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172 | *
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173 | * @param model the model.
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174 | */
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175 | public void setModel(HistoryBrowserModel model) {
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176 | if (this.model != null) {
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177 | unregisterAsObserver(model);
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178 | }
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179 | this.model = model;
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180 | if (this.model != null) {
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181 | registerAsObserver(model);
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182 | }
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183 | }
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184 |
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185 | /**
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186 | * Pans the map to the old+new coordinate
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187 | * @see JMapViewer#setDisplayToFitMapMarkers()
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188 | */
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189 | public void setDisplayToFitMapMarkers() {
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190 | mapViewer.setDisplayToFitMapMarkers();
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191 | }
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192 |
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193 | private static JosmTextArea newTextArea() {
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194 | JosmTextArea area = new JosmTextArea();
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195 | GuiHelper.setBackgroundReadable(area, Color.WHITE);
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196 | area.setEditable(false);
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197 | area.setOpaque(true);
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198 | area.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
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199 | area.setFont(UIManager.getFont("Label.font"));
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200 | return area;
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201 | }
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202 |
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203 | private static class Updater {
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204 | private final HistoryBrowserModel model;
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205 | private final PointInTimeType role;
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206 |
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207 | protected Updater(HistoryBrowserModel model, PointInTimeType role) {
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208 | this.model = model;
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209 | this.role = role;
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210 | }
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211 |
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212 | protected HistoryOsmPrimitive getPrimitive() {
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213 | if (model == null || role == null)
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214 | return null;
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215 | return model.getPointInTime(role);
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216 | }
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217 |
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218 | protected HistoryOsmPrimitive getOppositePrimitive() {
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219 | if (model == null || role == null)
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220 | return null;
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221 | return model.getPointInTime(role.opposite());
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222 | }
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223 |
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224 | protected final Pair<LatLon, LatLon> getCoordinates() {
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225 | HistoryOsmPrimitive p = getPrimitive();
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226 | HistoryOsmPrimitive opposite = getOppositePrimitive();
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227 | if (!(p instanceof HistoryNode)) return null;
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228 | if (!(opposite instanceof HistoryNode)) return null;
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229 | HistoryNode node = (HistoryNode) p;
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230 | HistoryNode oppositeNode = (HistoryNode) opposite;
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231 |
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232 | return Pair.create(node.getCoords(), oppositeNode.getCoords());
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233 | }
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234 | }
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235 |
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236 | /**
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237 | * A UI widgets which displays the Lan/Lon-coordinates of a {@link HistoryNode}.
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238 | */
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239 | private static class LatLonViewer extends JPanel implements Observer {
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240 |
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241 | private final JosmTextArea lblLat = newTextArea();
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242 | private final JosmTextArea lblLon = newTextArea();
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243 | private final Updater updater;
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244 | private final Color modifiedColor;
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245 |
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246 | protected void build() {
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247 | setLayout(new GridBagLayout());
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248 | setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
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249 | GridBagConstraints gc = new GridBagConstraints();
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250 |
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251 | // --------
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252 | gc.gridx = 0;
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253 | gc.gridy = 0;
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254 | gc.fill = GridBagConstraints.NONE;
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255 | gc.weightx = 0.0;
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256 | gc.insets = new Insets(5, 5, 5, 5);
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257 | gc.anchor = GridBagConstraints.NORTHWEST;
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258 | add(new JLabel(tr("Latitude: ")), gc);
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259 |
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260 | // --------
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261 | gc.gridx = 1;
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262 | gc.gridy = 0;
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263 | gc.fill = GridBagConstraints.HORIZONTAL;
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264 | gc.weightx = 1.0;
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265 | add(lblLat, gc);
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266 |
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267 | // --------
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268 | gc.gridx = 0;
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269 | gc.gridy = 1;
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270 | gc.fill = GridBagConstraints.NONE;
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271 | gc.weightx = 0.0;
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272 | gc.anchor = GridBagConstraints.NORTHWEST;
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273 | add(new JLabel(tr("Longitude: ")), gc);
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274 |
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275 | // --------
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276 | gc.gridx = 1;
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277 | gc.gridy = 1;
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278 | gc.fill = GridBagConstraints.HORIZONTAL;
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279 | gc.weightx = 1.0;
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280 | add(lblLon, gc);
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281 | }
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282 |
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283 | /**
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284 | * Constructs a new {@code LatLonViewer}.
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285 | * @param model a model
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286 | * @param role the role for this viewer.
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287 | */
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288 | LatLonViewer(HistoryBrowserModel model, PointInTimeType role) {
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289 | this.updater = new Updater(model, role);
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290 | this.modifiedColor = PointInTimeType.CURRENT_POINT_IN_TIME.equals(role)
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291 | ? TwoColumnDiff.Item.DiffItemType.INSERTED.getColor()
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292 | : TwoColumnDiff.Item.DiffItemType.DELETED.getColor();
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293 | build();
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294 | }
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295 |
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296 | protected void refresh() {
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297 | final Pair<LatLon, LatLon> coordinates = updater.getCoordinates();
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298 | if (coordinates == null) return;
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299 | final LatLon coord = coordinates.a;
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300 | final LatLon oppositeCoord = coordinates.b;
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301 |
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302 | // display the coordinates
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303 | lblLat.setText(coord != null ? coord.latToString(CoordinateFormat.DECIMAL_DEGREES) : tr("(none)"));
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304 | lblLon.setText(coord != null ? coord.lonToString(CoordinateFormat.DECIMAL_DEGREES) : tr("(none)"));
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305 |
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306 | // update background color to reflect differences in the coordinates
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307 | if (coord == oppositeCoord ||
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308 | (coord != null && oppositeCoord != null && coord.lat() == oppositeCoord.lat())) {
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309 | GuiHelper.setBackgroundReadable(lblLat, Color.WHITE);
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310 | } else {
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311 | GuiHelper.setBackgroundReadable(lblLat, modifiedColor);
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312 | }
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313 | if (coord == oppositeCoord ||
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314 | (coord != null && oppositeCoord != null && coord.lon() == oppositeCoord.lon())) {
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315 | GuiHelper.setBackgroundReadable(lblLon, Color.WHITE);
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316 | } else {
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317 | GuiHelper.setBackgroundReadable(lblLon, modifiedColor);
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318 | }
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319 | }
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320 |
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321 | @Override
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322 | public void update(Observable o, Object arg) {
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323 | refresh();
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324 | }
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325 | }
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326 |
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327 | private static class MapViewer extends JMapViewer implements Observer {
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328 |
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329 | private final Updater updater;
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330 |
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331 | MapViewer(HistoryBrowserModel model) {
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332 | this.updater = new Updater(model, PointInTimeType.REFERENCE_POINT_IN_TIME);
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333 | setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
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334 | }
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335 |
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336 | @Override
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337 | public void update(Observable o, Object arg) {
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338 | final Pair<LatLon, LatLon> coordinates = updater.getCoordinates();
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339 | if (coordinates == null) {
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340 | return;
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341 | }
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342 |
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343 | removeAllMapMarkers();
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344 |
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345 | if (coordinates.a != null) {
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346 | final MapMarkerDot oldMarker = new MapMarkerDot(coordinates.a.lat(), coordinates.a.lon());
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347 | oldMarker.setBackColor(TwoColumnDiff.Item.DiffItemType.DELETED.getColor());
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348 | addMapMarker(oldMarker);
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349 | }
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350 | if (coordinates.b != null) {
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351 | final MapMarkerDot newMarker = new MapMarkerDot(coordinates.b.lat(), coordinates.b.lon());
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352 | newMarker.setBackColor(TwoColumnDiff.Item.DiffItemType.INSERTED.getColor());
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353 | addMapMarker(newMarker);
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354 | }
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355 |
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356 | setDisplayToFitMapMarkers();
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357 | }
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358 | }
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359 |
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360 | private static class DistanceViewer extends JPanel implements Observer {
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361 |
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362 | private final JosmTextArea lblDistance = newTextArea();
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363 | private final Updater updater;
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364 |
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365 | DistanceViewer(HistoryBrowserModel model) {
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366 | this.updater = new Updater(model, PointInTimeType.REFERENCE_POINT_IN_TIME);
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367 | build();
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368 | }
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369 |
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370 | protected void build() {
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371 | setLayout(new GridBagLayout());
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372 | setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
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373 | GridBagConstraints gc = new GridBagConstraints();
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374 |
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375 | // --------
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376 | gc.gridx = 0;
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377 | gc.gridy = 0;
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378 | gc.fill = GridBagConstraints.NONE;
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379 | gc.weightx = 0.0;
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380 | gc.insets = new Insets(5, 5, 5, 5);
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381 | gc.anchor = GridBagConstraints.NORTHWEST;
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382 | add(new JLabel(tr("Distance: ")), gc);
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383 |
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384 | // --------
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385 | gc.gridx = 1;
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386 | gc.gridy = 0;
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387 | gc.fill = GridBagConstraints.HORIZONTAL;
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388 | gc.weightx = 1.0;
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389 | add(lblDistance, gc);
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390 | }
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391 |
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392 | protected void refresh() {
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393 | final Pair<LatLon, LatLon> coordinates = updater.getCoordinates();
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394 | if (coordinates == null) return;
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395 | final LatLon coord = coordinates.a;
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396 | final LatLon oppositeCoord = coordinates.b;
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397 |
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398 | // update distance
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399 | //
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400 | if (coord != null && oppositeCoord != null) {
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401 | double distance = coord.greatCircleDistance(oppositeCoord);
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402 | GuiHelper.setBackgroundReadable(lblDistance, distance > 0
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403 | ? TwoColumnDiff.Item.DiffItemType.CHANGED.getColor()
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404 | : Color.WHITE);
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405 | lblDistance.setText(NavigatableComponent.getDistText(distance));
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406 | } else {
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407 | GuiHelper.setBackgroundReadable(lblDistance, coord != oppositeCoord
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408 | ? TwoColumnDiff.Item.DiffItemType.CHANGED.getColor()
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409 | : Color.WHITE);
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410 | lblDistance.setText(tr("(none)"));
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411 | }
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412 | }
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413 |
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414 | @Override
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415 | public void update(Observable o, Object arg) {
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416 | refresh();
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417 | }
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418 | }
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419 | }
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