1 | import static org.openstreetmap.josm.tools.I18n.tr;
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2 |
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3 | import java.awt.event.ActionEvent;
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4 | import java.awt.event.KeyEvent;
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5 | import java.util.ArrayList;
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6 | import java.util.Collection;
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7 | import java.util.Iterator;
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8 | import java.util.LinkedList;
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9 |
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10 | import javax.swing.JOptionPane;
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11 |
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12 | import org.openstreetmap.josm.Main;
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13 | import org.openstreetmap.josm.actions.JosmAction;
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14 | import org.openstreetmap.josm.actions.downloadtasks.DownloadOsmTask;
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15 | import org.openstreetmap.josm.actions.MergeNodesAction;
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16 | import org.openstreetmap.josm.data.Bounds;
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17 | import org.openstreetmap.josm.data.osm.DataSource;
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18 | import org.openstreetmap.josm.data.osm.Node;
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19 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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20 | import org.openstreetmap.josm.data.osm.Way;
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21 | import org.openstreetmap.josm.gui.MainMenu;
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22 | import org.openstreetmap.josm.plugins.Plugin;
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23 | import org.openstreetmap.josm.tools.Shortcut;
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24 |
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25 | /**
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26 | * Plugin class for the Way Downloader plugin
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27 | *
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28 | * @author Harry Wood
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29 | */
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30 | public class WayDownloaderPlugin extends Plugin {
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31 |
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32 | private Way priorConnectedWay = null;
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33 | private Node selectedNode = null;
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34 |
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35 |
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36 | /** Plugin constructor called at JOSM startup */
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37 | public WayDownloaderPlugin() {
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38 | //add WayDownloadAction to tools menu
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39 | MainMenu.add(Main.main.menu.toolsMenu, new WayDownloadAction());
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40 | }
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41 |
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42 | private class WayDownloadAction extends JosmAction implements Runnable {
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43 |
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44 | /** Set up the action (text appearing on the menu, keyboard shortcut etc */
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45 | public WayDownloadAction() {
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46 |
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47 | super( "Way Download" ,
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48 | "way-download",
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49 | "Download map data on the end of selected way",
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50 | Shortcut.registerShortcut("waydownloader:waydownload", "Way Download", KeyEvent.VK_W, Shortcut.GROUP_MENU, Shortcut.SHIFT_DEFAULT),
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51 | true);
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52 | }
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53 |
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54 | /** Called when the WayDownloadAction action is triggered (e.g. user clicked the menu option) */
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55 | public void actionPerformed(ActionEvent e) {
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56 |
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57 | System.out.println("Way Download");
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58 |
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59 | String errMsg = null;
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60 |
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61 | selectedNode = null;
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62 | Collection<OsmPrimitive> selection = Main.ds.getSelectedNodes();
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63 |
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64 | if (selection.size()==0) {
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65 | selection = Main.ds.getSelectedWays();
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66 | if (!workFromWaySelection(selection)) {
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67 | errMsg = tr("Select a starting node on the end of a way");
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68 | }
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69 | selection = Main.ds.getSelectedNodes();
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70 | }
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71 |
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72 | if ( selection.size()==0 || selection.size()>1 ) {
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73 | errMsg = tr("Select a starting node on the end of a way");
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74 | } else {
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75 | OsmPrimitive p = selection.iterator().next();
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76 |
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77 |
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78 |
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79 | if (!(p instanceof Node)) {
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80 | errMsg = tr("Select a starting node on the end of a way");
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81 | } else {
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82 | selectedNode = (Node) p;
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83 |
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84 |
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85 | Main.map.mapView.zoomTo(selectedNode.getEastNorth());
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86 |
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87 | //Before downloading. Figure a few things out.
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88 | //Find connected way
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89 | ArrayList<Way> connectedWays = findConnectedWays();
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90 |
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91 | if (connectedWays.size()==0) {
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92 | errMsg = tr("Select a starting node on the end of a way");
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93 | } else {
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94 | priorConnectedWay =(Way) connectedWays.get(0);
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95 |
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96 | //Download a little rectangle around the selected node
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97 | double latbuffer=0.0003; //TODO make this an option
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98 | double lonbuffer=0.0005;
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99 | DownloadOsmTask downloadTask = new DownloadOsmTask();
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100 | downloadTask.download( null,
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101 | selectedNode.getCoor().lat()-latbuffer,
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102 | selectedNode.getCoor().lon()-lonbuffer,
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103 | selectedNode.getCoor().lat()+latbuffer,
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104 | selectedNode.getCoor().lon()+lonbuffer);
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105 |
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106 | //The download is scheduled to be executed.
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107 | //Now schedule the run() method (below) to be executed once that's completed.
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108 | Main.worker.execute(this);
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109 | }
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110 | }
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111 | }
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112 |
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113 | if(errMsg != null)
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114 | JOptionPane.showMessageDialog(Main.parent, errMsg);
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115 | }
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116 |
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117 | /**
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118 | * Logic to excute after the download has happened
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119 | */
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120 | public void run() {
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121 | //Find ways connected to the node after the download
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122 | ArrayList<Way> connectedWays = findConnectedWays();
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123 |
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124 | String errMsg = null;
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125 | if (connectedWays.size()==0) {
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126 | throw new RuntimeException("Way downloader data inconsistency. priorConnectedWay (" +
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127 | priorConnectedWay.toString() + ") wasn't discovered after download");
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128 |
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129 | } else if (connectedWays.size()==1) {
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130 | //Just one way connecting the node still. Presumably the one which was there before
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131 |
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132 | //Check if it's just a duplicate node
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133 | Node dupeNode = duplicateNode();
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134 | if (dupeNode!=null) {
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135 |
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136 | if (JOptionPane.showConfirmDialog(null, "Merge duplicate node?")==JOptionPane.YES_OPTION) {
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137 | LinkedList<Node> dupeNodes = new LinkedList<Node>();
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138 | dupeNodes.add(dupeNode);
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139 | MergeNodesAction.mergeNodes(dupeNodes, selectedNode);
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140 |
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141 | connectedWays = findConnectedWays(); //Carry on
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142 | }
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143 |
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144 |
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145 | } else {
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146 | errMsg = tr("Reached the end of the line");
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147 | }
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148 |
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149 | }
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150 |
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151 | if (connectedWays.size()>2) {
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152 | //Three or more ways meeting at this node. Means we have a junction.
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153 | errMsg = tr("Reached a junction");
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154 |
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155 | } else if (connectedWays.size()==2) {
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156 | //Two connected ways (The "normal" way downloading case)
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157 | //Figure out which of the two is new.
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158 | System.out.println("connectedWays.toString()=" + connectedWays.toString());
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159 | Way wayA = (Way) connectedWays.get(0);
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160 | Way wayB = (Way) connectedWays.get(1);
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161 | Way nextWay = wayA;
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162 | if (priorConnectedWay.equals(wayA)) nextWay = wayB;
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163 |
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164 | Node nextNode = findOtherEnd(nextWay, selectedNode);
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165 |
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166 | //Select the next node
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167 | Main.ds.setSelected(nextNode);
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168 |
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169 | Main.map.mapView.zoomTo(nextNode.getEastNorth());
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170 | }
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171 | if(errMsg != null)
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172 | JOptionPane.showMessageDialog(Main.parent, errMsg);
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173 | }
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174 | }
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175 |
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176 | /** See if there's another node at the same coordinates. If so return it. Otherwise null */
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177 | private Node duplicateNode() {
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178 | Iterator nodesIter = Main.ds.nodes.iterator();
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179 | while (nodesIter.hasNext()) {
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180 | Node onNode = (Node) nodesIter.next();
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181 | if (!onNode.equals(this.selectedNode)
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182 | && onNode.getCoor().lat()==selectedNode.getCoor().lat()
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183 | && onNode.getCoor().lon()==selectedNode.getCoor().lon()) {
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184 | return onNode;
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185 | }
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186 | }
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187 | return null;
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188 | }
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189 |
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190 | /** Given the the node on one end of the way, return the node on the other end */
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191 | private Node findOtherEnd(Way way, Node firstEnd) {
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192 | Node otherEnd = way.nodes.get(0);
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193 | if (otherEnd.equals(firstEnd)) otherEnd = way.nodes.get(way.nodes.size()-1);
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194 | return otherEnd;
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195 | }
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196 |
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197 | /** find set of ways which have an end on the selectedNode */
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198 | private ArrayList<Way> findConnectedWays() {
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199 | ArrayList<Way> connectedWays = new ArrayList<Way>();
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200 |
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201 | //loop through every way
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202 | Iterator waysIter = Main.ds.ways.iterator();
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203 | while (waysIter.hasNext()) {
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204 | Way onWay = (Way) waysIter.next();
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205 |
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206 |
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207 | Object[] nodes = onWay.nodes.toArray();
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208 | if (nodes.length<2) {
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209 | //Should never happen should it? TODO: investigate. For the moment ignore these
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210 | System.err.println("WayDownloader plugin encountered a way with " + nodes.length + " nodes :" + onWay.toString());
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211 | } else {
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212 | Node firstNode = (Node) nodes[0];
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213 | Node lastNode = (Node) nodes[nodes.length-1];
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214 |
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215 | if (firstNode.equals(selectedNode) || lastNode.equals(selectedNode)) {
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216 | //Found it
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217 | connectedWays.add(onWay);
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218 | }
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219 | }
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220 | }
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221 | return connectedWays;
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222 | }
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223 |
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224 | /**
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225 | * given a selected way, select a node on the end of the way which is not in a downloaded area
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226 | * return true if this worked
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227 | */
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228 | private boolean workFromWaySelection(Collection<OsmPrimitive> selection) {
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229 |
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230 | if (selection.size()>1) {
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231 | //more than one way selected
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232 | return false;
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233 | } else {
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234 | Way selectedWay = (Way) selection.toArray()[0];
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235 | selectedNode = (Node) selectedWay.nodes.get(0);
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236 |
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237 | if (isDownloaded(selectedNode)) {
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238 | selectedNode = findOtherEnd(selectedWay, selectedNode);
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239 |
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240 | if (isDownloaded(selectedNode)) return false;
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241 | }
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242 | }
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243 | Main.ds.setSelected(selectedNode);
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244 | return true;
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245 | }
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246 |
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247 | private boolean isDownloaded(Node node) {
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248 | Iterator downloadedAreasIter = Main.ds.dataSources.iterator();
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249 | while (downloadedAreasIter.hasNext()) {
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250 | DataSource datasource = (DataSource) downloadedAreasIter.next();
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251 | Bounds bounds = datasource.bounds;
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252 |
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253 | if (node.getCoor().lat()>bounds.min.lat() &&
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254 | node.getCoor().lat()<bounds.max.lat() &&
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255 | node.getCoor().lon()>bounds.min.lon() &&
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256 | node.getCoor().lon()<bounds.max.lon()) {
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257 | return true;
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258 | }
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259 | }
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260 | return false;
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261 | }
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262 | }
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