1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions.downloadtasks;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.io.IOException;
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7 | import java.net.URL;
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8 | import java.util.concurrent.Future;
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9 | import java.util.regex.Matcher;
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10 | import java.util.regex.Pattern;
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11 |
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12 | import org.openstreetmap.josm.Main;
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13 | import org.openstreetmap.josm.data.Bounds;
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14 | import org.openstreetmap.josm.data.Bounds.ParseMethod;
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15 | import org.openstreetmap.josm.data.gpx.GpxData;
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16 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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17 | import org.openstreetmap.josm.gui.layer.GpxLayer;
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18 | import org.openstreetmap.josm.gui.layer.Layer;
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19 | import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
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20 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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21 | import org.openstreetmap.josm.gui.progress.ProgressTaskId;
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22 | import org.openstreetmap.josm.gui.progress.ProgressTaskIds;
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23 | import org.openstreetmap.josm.io.BoundingBoxDownloader;
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24 | import org.openstreetmap.josm.io.GpxImporter;
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25 | import org.openstreetmap.josm.io.GpxImporter.GpxImporterData;
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26 | import org.openstreetmap.josm.io.OsmServerLocationReader;
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27 | import org.openstreetmap.josm.io.OsmServerReader;
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28 | import org.openstreetmap.josm.io.OsmTransferException;
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29 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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30 | import org.xml.sax.SAXException;
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31 |
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32 | /**
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33 | * Task allowing to download GPS data.
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34 | */
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35 | public class DownloadGpsTask extends AbstractDownloadTask {
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36 |
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37 | private DownloadTask downloadTask;
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38 |
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39 | private static final String PATTERN_TRACE_ID = "https?://.*(osm|openstreetmap).org/trace/\\p{Digit}+/data";
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40 |
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41 | private static final String PATTERN_TRACKPOINTS_BBOX = "https?://.*/api/0.6/trackpoints\\?bbox=.*,.*,.*,.*";
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42 |
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43 | private static final String PATTERN_EXTERNAL_GPX_SCRIPT = "https?://.*exportgpx.*";
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44 | private static final String PATTERN_EXTERNAL_GPX_FILE = "https?://.*/(.*\\.gpx)";
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45 |
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46 | protected String newLayerName = null;
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47 |
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48 | @Override
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49 | public String[] getPatterns() {
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50 | return new String[] {PATTERN_EXTERNAL_GPX_FILE, PATTERN_EXTERNAL_GPX_SCRIPT, PATTERN_TRACE_ID, PATTERN_TRACKPOINTS_BBOX};
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51 | }
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52 |
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53 | @Override
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54 | public String getTitle() {
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55 | return tr("Download GPS");
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56 | }
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57 |
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58 | @Override
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59 | public Future<?> download(boolean newLayer, Bounds downloadArea, ProgressMonitor progressMonitor) {
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60 | downloadTask = new DownloadTask(newLayer,
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61 | new BoundingBoxDownloader(downloadArea), progressMonitor);
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62 | // We need submit instead of execute so we can wait for it to finish and get the error
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63 | // message if necessary. If no one calls getErrorMessage() it just behaves like execute.
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64 | return Main.worker.submit(downloadTask);
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65 | }
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66 |
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67 | @Override
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68 | public Future<?> loadUrl(boolean newLayer, String url, ProgressMonitor progressMonitor) {
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69 | CheckParameterUtil.ensureParameterNotNull(url, "url");
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70 | if (url.matches(PATTERN_TRACE_ID) || url.matches(PATTERN_EXTERNAL_GPX_SCRIPT) || url.matches(PATTERN_EXTERNAL_GPX_FILE)) {
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71 | downloadTask = new DownloadTask(newLayer,
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72 | new OsmServerLocationReader(url), progressMonitor);
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73 | // Extract .gpx filename from URL to set the new layer name
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74 | Matcher matcher = Pattern.compile(PATTERN_EXTERNAL_GPX_FILE).matcher(url);
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75 | newLayerName = matcher.matches() ? matcher.group(1) : null;
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76 | // We need submit instead of execute so we can wait for it to finish and get the error
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77 | // message if necessary. If no one calls getErrorMessage() it just behaves like execute.
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78 | return Main.worker.submit(downloadTask);
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79 |
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80 | } else if (url.matches(PATTERN_TRACKPOINTS_BBOX)) {
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81 | String[] table = url.split("\\?|=|&");
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82 | for (int i = 0; i<table.length; i++) {
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83 | if (table[i].equals("bbox") && i<table.length-1 )
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84 | return download(newLayer, new Bounds(table[i+1], ",", ParseMethod.LEFT_BOTTOM_RIGHT_TOP), progressMonitor);
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85 | }
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86 | }
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87 | return null;
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88 | }
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89 |
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90 | @Override
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91 | public void cancel() {
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92 | if (downloadTask != null) {
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93 | downloadTask.cancel();
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94 | }
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95 | }
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96 |
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97 | class DownloadTask extends PleaseWaitRunnable {
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98 | private OsmServerReader reader;
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99 | private GpxData rawData;
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100 | private final boolean newLayer;
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101 |
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102 | public DownloadTask(boolean newLayer, OsmServerReader reader, ProgressMonitor progressMonitor) {
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103 | super(tr("Downloading GPS data"));
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104 | this.reader = reader;
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105 | this.newLayer = newLayer;
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106 | }
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107 |
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108 | @Override public void realRun() throws IOException, SAXException, OsmTransferException {
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109 | try {
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110 | if (isCanceled())
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111 | return;
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112 | ProgressMonitor subMonitor = progressMonitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false);
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113 | rawData = reader.parseRawGps(subMonitor);
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114 | } catch(Exception e) {
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115 | if (isCanceled())
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116 | return;
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117 | if (e instanceof OsmTransferException) {
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118 | rememberException(e);
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119 | } else {
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120 | rememberException(new OsmTransferException(e));
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121 | }
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122 | }
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123 | }
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124 |
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125 | @Override protected void finish() {
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126 | if (isCanceled() || isFailed())
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127 | return;
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128 | if (rawData == null)
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129 | return;
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130 | String name = newLayerName != null ? newLayerName : tr("Downloaded GPX Data");
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131 |
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132 | GpxImporterData layers = GpxImporter.loadLayers(rawData, reader.isGpxParsedProperly(), name, tr("Markers from {0}", name));
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133 |
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134 | GpxLayer gpxLayer = addOrMergeLayer(layers.getGpxLayer(), findGpxMergeLayer());
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135 | addOrMergeLayer(layers.getMarkerLayer(), findMarkerMergeLayer(gpxLayer));
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136 |
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137 | layers.getPostLayerTask().run();
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138 | }
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139 |
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140 | private <L extends Layer> L addOrMergeLayer(L layer, L mergeLayer) {
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141 | if (layer == null) return null;
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142 | if (newLayer || mergeLayer == null) {
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143 | Main.main.addLayer(layer);
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144 | return layer;
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145 | } else {
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146 | mergeLayer.mergeFrom(layer);
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147 | Main.map.repaint();
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148 | return mergeLayer;
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149 | }
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150 | }
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151 |
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152 | private GpxLayer findGpxMergeLayer() {
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153 | if (!Main.isDisplayingMapView())
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154 | return null;
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155 | boolean merge = Main.pref.getBoolean("download.gps.mergeWithLocal", false);
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156 | Layer active = Main.map.mapView.getActiveLayer();
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157 | if (active instanceof GpxLayer && (merge || ((GpxLayer)active).data.fromServer))
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158 | return (GpxLayer) active;
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159 | for (GpxLayer l : Main.map.mapView.getLayersOfType(GpxLayer.class)) {
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160 | if (merge || l.data.fromServer)
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161 | return l;
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162 | }
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163 | return null;
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164 | }
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165 |
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166 | private MarkerLayer findMarkerMergeLayer(GpxLayer fromLayer) {
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167 | if (!Main.isDisplayingMapView())
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168 | return null;
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169 | for (MarkerLayer l : Main.map.mapView.getLayersOfType(MarkerLayer.class)) {
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170 | if (fromLayer != null && l.fromLayer == fromLayer)
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171 | return l;
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172 | }
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173 | return null;
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174 | }
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175 |
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176 | @Override protected void cancel() {
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177 | setCanceled(true);
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178 | if (reader != null) {
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179 | reader.cancel();
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180 | }
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181 | }
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182 |
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183 | @Override
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184 | public ProgressTaskId canRunInBackground() {
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185 | return ProgressTaskIds.DOWNLOAD_GPS;
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186 | }
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187 | }
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188 |
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189 | @Override
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190 | public String getConfirmationMessage(URL url) {
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191 | // TODO
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192 | return null;
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193 | }
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194 |
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195 | /**
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196 | * Determines if the given URL denotes an OSM gpx-related API call.
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197 | * @param url The url to check
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198 | * @return true if the url matches "Trace ID" API call or "Trackpoints bbox" API call, false otherwise
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199 | * @see GpxData#fromServer
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200 | * @since 5745
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201 | */
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202 | public static final boolean isFromServer(String url) {
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203 | return url != null && (url.matches(PATTERN_TRACE_ID) || url.matches(PATTERN_TRACKPOINTS_BBOX));
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204 | }
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205 | }
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