[6380] | 1 | // License: GPL. For details, see LICENSE file.
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[153] | 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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[5691] | 7 | import java.net.URL;
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[6524] | 8 | import java.util.ArrayList;
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[12679] | 9 | import java.util.Arrays;
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[1869] | 10 | import java.util.Collection;
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[11836] | 11 | import java.util.Collections;
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[11735] | 12 | import java.util.HashSet;
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| 13 | import java.util.Set;
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[1465] | 14 | import java.util.concurrent.Future;
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[5024] | 15 | import java.util.regex.Matcher;
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| 16 | import java.util.regex.Pattern;
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[13434] | 17 | import java.util.stream.Stream;
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[153] | 18 |
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[1465] | 19 | import org.openstreetmap.josm.data.Bounds;
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[7575] | 20 | import org.openstreetmap.josm.data.DataSource;
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[7816] | 21 | import org.openstreetmap.josm.data.ProjectionBounds;
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[11774] | 22 | import org.openstreetmap.josm.data.ViewportData;
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[3066] | 23 | import org.openstreetmap.josm.data.coor.LatLon;
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[153] | 24 | import org.openstreetmap.josm.data.osm.DataSet;
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[11735] | 25 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 26 | import org.openstreetmap.josm.data.osm.Relation;
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| 27 | import org.openstreetmap.josm.data.osm.Way;
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[2477] | 28 | import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
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[12630] | 29 | import org.openstreetmap.josm.gui.MainApplication;
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| 30 | import org.openstreetmap.josm.gui.MapFrame;
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[153] | 31 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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[11735] | 32 | import org.openstreetmap.josm.gui.io.UpdatePrimitivesTask;
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[153] | 33 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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[5402] | 34 | import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
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[1811] | 35 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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[153] | 36 | import org.openstreetmap.josm.io.BoundingBoxDownloader;
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[1146] | 37 | import org.openstreetmap.josm.io.OsmServerLocationReader;
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[12679] | 38 | import org.openstreetmap.josm.io.OsmServerLocationReader.OsmUrlPattern;
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[1146] | 39 | import org.openstreetmap.josm.io.OsmServerReader;
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[4310] | 40 | import org.openstreetmap.josm.io.OsmTransferCanceledException;
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[1670] | 41 | import org.openstreetmap.josm.io.OsmTransferException;
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[12620] | 42 | import org.openstreetmap.josm.tools.Logging;
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[6524] | 43 | import org.openstreetmap.josm.tools.Utils;
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[5782] | 44 | import org.xml.sax.SAXException;
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[153] | 45 |
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| 46 | /**
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| 47 | * Open the download dialog and download the data.
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| 48 | * Run in the worker thread.
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| 49 | */
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[8908] | 50 | public class DownloadOsmTask extends AbstractDownloadTask<DataSet> {
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[6069] | 51 |
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[4523] | 52 | protected Bounds currentBounds;
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| 53 | protected DownloadTask downloadTask;
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[6069] | 54 |
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[8840] | 55 | protected String newLayerName;
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[6069] | 56 |
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[8927] | 57 | /** This allows subclasses to ignore this warning */
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| 58 | protected boolean warnAboutEmptyArea = true;
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| 59 |
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[6031] | 60 | @Override
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| 61 | public String[] getPatterns() {
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| 62 | if (this.getClass() == DownloadOsmTask.class) {
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[12679] | 63 | return Arrays.stream(OsmUrlPattern.values()).map(OsmUrlPattern::pattern).toArray(String[]::new);
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[6031] | 64 | } else {
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| 65 | return super.getPatterns();
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| 66 | }
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| 67 | }
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[1082] | 68 |
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[6031] | 69 | @Override
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| 70 | public String getTitle() {
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| 71 | if (this.getClass() == DownloadOsmTask.class) {
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| 72 | return tr("Download OSM");
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| 73 | } else {
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| 74 | return super.getTitle();
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| 75 | }
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| 76 | }
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| 77 |
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[5097] | 78 | @Override
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[2328] | 79 | public Future<?> download(boolean newLayer, Bounds downloadArea, ProgressMonitor progressMonitor) {
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[5097] | 80 | return download(new BoundingBoxDownloader(downloadArea), newLayer, downloadArea, progressMonitor);
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| 81 | }
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[2414] | 82 |
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[5402] | 83 | /**
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| 84 | * Asynchronously launches the download task for a given bounding box.
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| 85 | *
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| 86 | * Set <code>progressMonitor</code> to null, if the task should create, open, and close a progress monitor.
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| 87 | * Set progressMonitor to {@link NullProgressMonitor#INSTANCE} if progress information is to
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| 88 | * be discarded.
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| 89 | *
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| 90 | * You can wait for the asynchronous download task to finish by synchronizing on the returned
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| 91 | * {@link Future}, but make sure not to freeze up JOSM. Example:
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| 92 | * <pre>
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[6830] | 93 | * Future<?> future = task.download(...);
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[5402] | 94 | * // DON'T run this on the Swing EDT or JOSM will freeze
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| 95 | * future.get(); // waits for the dowload task to complete
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| 96 | * </pre>
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| 97 | *
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| 98 | * The following example uses a pattern which is better suited if a task is launched from
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| 99 | * the Swing EDT:
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| 100 | * <pre>
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[6830] | 101 | * final Future<?> future = task.download(...);
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[5402] | 102 | * Runnable runAfterTask = new Runnable() {
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| 103 | * public void run() {
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| 104 | * // this is not strictly necessary because of the type of executor service
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| 105 | * // Main.worker is initialized with, but it doesn't harm either
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| 106 | * //
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| 107 | * future.get(); // wait for the download task to complete
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| 108 | * doSomethingAfterTheTaskCompleted();
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| 109 | * }
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| 110 | * }
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[12634] | 111 | * MainApplication.worker.submit(runAfterTask);
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[5402] | 112 | * </pre>
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| 113 | * @param reader the reader used to parse OSM data (see {@link OsmServerReader#parseOsm})
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| 114 | * @param newLayer true, if the data is to be downloaded into a new layer. If false, the task
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| 115 | * selects one of the existing layers as download layer, preferably the active layer.
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| 116 | * @param downloadArea the area to download
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| 117 | * @param progressMonitor the progressMonitor
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| 118 | * @return the future representing the asynchronous task
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| 119 | */
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[5097] | 120 | public Future<?> download(OsmServerReader reader, boolean newLayer, Bounds downloadArea, ProgressMonitor progressMonitor) {
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[11658] | 121 | return download(new DownloadTask(newLayer, reader, progressMonitor, zoomAfterDownload), downloadArea);
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[5097] | 122 | }
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| 123 |
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| 124 | protected Future<?> download(DownloadTask downloadTask, Bounds downloadArea) {
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| 125 | this.downloadTask = downloadTask;
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| 126 | this.currentBounds = new Bounds(downloadArea);
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[2322] | 127 | // We need submit instead of execute so we can wait for it to finish and get the error
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| 128 | // message if necessary. If no one calls getErrorMessage() it just behaves like execute.
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[12634] | 129 | return MainApplication.worker.submit(downloadTask);
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[2322] | 130 | }
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| 131 |
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[6588] | 132 | /**
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| 133 | * This allows subclasses to perform operations on the URL before {@link #loadUrl} is performed.
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[8927] | 134 | * @param url the original URL
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| 135 | * @return the modified URL
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[6588] | 136 | */
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| 137 | protected String modifyUrlBeforeLoad(String url) {
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[5782] | 138 | return url;
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| 139 | }
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[6069] | 140 |
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[2322] | 141 | /**
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| 142 | * Loads a given URL from the OSM Server
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[8927] | 143 | * @param newLayer True if the data should be saved to a new layer
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[5369] | 144 | * @param url The URL as String
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[2322] | 145 | */
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[6031] | 146 | @Override
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[8927] | 147 | public Future<?> loadUrl(boolean newLayer, String url, ProgressMonitor progressMonitor) {
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| 148 | String newUrl = modifyUrlBeforeLoad(url);
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| 149 | downloadTask = new DownloadTask(newLayer,
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| 150 | new OsmServerLocationReader(newUrl),
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[2322] | 151 | progressMonitor);
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[3064] | 152 | currentBounds = null;
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[5024] | 153 | // Extract .osm filename from URL to set the new layer name
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[8927] | 154 | extractOsmFilename("https?://.*/(.*\\.osm)", newUrl);
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[12634] | 155 | return MainApplication.worker.submit(downloadTask);
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[2322] | 156 | }
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[6069] | 157 |
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[5345] | 158 | protected final void extractOsmFilename(String pattern, String url) {
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| 159 | Matcher matcher = Pattern.compile(pattern).matcher(url);
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| 160 | newLayerName = matcher.matches() ? matcher.group(1) : null;
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| 161 | }
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[6031] | 162 |
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[4521] | 163 | @Override
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[2322] | 164 | public void cancel() {
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| 165 | if (downloadTask != null) {
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| 166 | downloadTask.cancel();
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| 167 | }
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| 168 | }
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| 169 |
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[7749] | 170 | @Override
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| 171 | public boolean isSafeForRemotecontrolRequests() {
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| 172 | return true;
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| 173 | }
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| 174 |
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[11774] | 175 | @Override
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| 176 | public ProjectionBounds getDownloadProjectionBounds() {
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| 177 | return downloadTask != null ? downloadTask.computeBbox(currentBounds) : null;
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| 178 | }
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| 179 |
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[7636] | 180 | /**
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| 181 | * Superclass of internal download task.
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[7637] | 182 | * @since 7636
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[7636] | 183 | */
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[8130] | 184 | public abstract static class AbstractInternalTask extends PleaseWaitRunnable {
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[7636] | 185 |
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| 186 | protected final boolean newLayer;
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[8927] | 187 | protected final boolean zoomAfterDownload;
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[4523] | 188 | protected DataSet dataSet;
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[1647] | 189 |
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[7636] | 190 | /**
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| 191 | * Constructs a new {@code AbstractInternalTask}.
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| 192 | * @param newLayer if {@code true}, force download to a new layer
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| 193 | * @param title message for the user
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| 194 | * @param ignoreException If true, exception will be propagated to calling code. If false then
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| 195 | * exception will be thrown directly in EDT. When this runnable is executed using executor framework
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| 196 | * then use false unless you read result of task (because exception will get lost if you don't)
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[8927] | 197 | * @param zoomAfterDownload If true, the map view will zoom to download area after download
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[7636] | 198 | */
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[8927] | 199 | public AbstractInternalTask(boolean newLayer, String title, boolean ignoreException, boolean zoomAfterDownload) {
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[7636] | 200 | super(title, ignoreException);
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[1169] | 201 | this.newLayer = newLayer;
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[8927] | 202 | this.zoomAfterDownload = zoomAfterDownload;
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[1169] | 203 | }
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[6069] | 204 |
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[7636] | 205 | /**
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| 206 | * Constructs a new {@code AbstractInternalTask}.
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| 207 | * @param newLayer if {@code true}, force download to a new layer
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| 208 | * @param title message for the user
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| 209 | * @param progressMonitor progress monitor
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| 210 | * @param ignoreException If true, exception will be propagated to calling code. If false then
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| 211 | * exception will be thrown directly in EDT. When this runnable is executed using executor framework
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| 212 | * then use false unless you read result of task (because exception will get lost if you don't)
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[8927] | 213 | * @param zoomAfterDownload If true, the map view will zoom to download area after download
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[7636] | 214 | */
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[8927] | 215 | public AbstractInternalTask(boolean newLayer, String title, ProgressMonitor progressMonitor, boolean ignoreException,
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| 216 | boolean zoomAfterDownload) {
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[7636] | 217 | super(title, progressMonitor, ignoreException);
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| 218 | this.newLayer = newLayer;
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[8927] | 219 | this.zoomAfterDownload = zoomAfterDownload;
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[4530] | 220 | }
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[153] | 221 |
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[1810] | 222 | protected OsmDataLayer getEditLayer() {
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[12636] | 223 | return MainApplication.getLayerManager().getEditLayer();
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[1810] | 224 | }
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| 225 |
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[13434] | 226 | /**
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| 227 | * Returns the number of modifiable data layers
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| 228 | * @return number of modifiable data layers
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| 229 | * @deprecated Use {@link #getNumModifiableDataLayers}
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| 230 | */
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| 231 | @Deprecated
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[1869] | 232 | protected int getNumDataLayers() {
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[13434] | 233 | return (int) getNumModifiableDataLayers();
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[1869] | 234 | }
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| 235 |
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[13434] | 236 | private static Stream<OsmDataLayer> getModifiableDataLayers() {
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| 237 | return MainApplication.getLayerManager().getLayersOfType(OsmDataLayer.class)
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[13453] | 238 | .stream().filter(OsmDataLayer::isDownloadable);
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[1869] | 239 | }
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[6069] | 240 |
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[13434] | 241 | /**
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| 242 | * Returns the number of modifiable data layers
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| 243 | * @return number of modifiable data layers
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| 244 | * @since 13434
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| 245 | */
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| 246 | protected long getNumModifiableDataLayers() {
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| 247 | return getModifiableDataLayers().count();
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| 248 | }
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| 249 |
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| 250 | /**
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| 251 | * Returns the first modifiable data layer
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| 252 | * @return the first modifiable data layer
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| 253 | * @since 13434
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| 254 | */
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| 255 | protected OsmDataLayer getFirstModifiableDataLayer() {
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| 256 | return getModifiableDataLayers().findFirst().orElse(null);
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| 257 | }
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| 258 |
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[5024] | 259 | protected OsmDataLayer createNewLayer(String layerName) {
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| 260 | if (layerName == null || layerName.isEmpty()) {
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| 261 | layerName = OsmDataLayer.createNewName();
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| 262 | }
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| 263 | return new OsmDataLayer(dataSet, layerName, null);
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| 264 | }
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[6069] | 265 |
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[4523] | 266 | protected OsmDataLayer createNewLayer() {
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[5024] | 267 | return createNewLayer(null);
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[4523] | 268 | }
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[1869] | 269 |
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[7816] | 270 | protected ProjectionBounds computeBbox(Bounds bounds) {
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[7636] | 271 | BoundingXYVisitor v = new BoundingXYVisitor();
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| 272 | if (bounds != null) {
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| 273 | v.visit(bounds);
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| 274 | } else {
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| 275 | v.computeBoundingBox(dataSet.getNodes());
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[1082] | 276 | }
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[7816] | 277 | return v.getBounds();
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| 278 | }
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| 279 |
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[10409] | 280 | protected OsmDataLayer addNewLayerIfRequired(String newLayerName) {
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[13434] | 281 | long numDataLayers = getNumModifiableDataLayers();
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[1869] | 282 | if (newLayer || numDataLayers == 0 || (numDataLayers > 1 && getEditLayer() == null)) {
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| 283 | // the user explicitly wants a new layer, we don't have any layer at all
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| 284 | // or it is not clear which layer to merge to
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[7636] | 285 | final OsmDataLayer layer = createNewLayer(newLayerName);
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[12636] | 286 | MainApplication.getLayerManager().addLayer(layer, zoomAfterDownload);
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[7636] | 287 | return layer;
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| 288 | }
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| 289 | return null;
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| 290 | }
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| 291 |
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| 292 | protected void loadData(String newLayerName, Bounds bounds) {
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[10409] | 293 | OsmDataLayer layer = addNewLayerIfRequired(newLayerName);
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[7636] | 294 | if (layer == null) {
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[13486] | 295 | layer = getEditLayer();
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| 296 | if (layer == null || !layer.isDownloadable()) {
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| 297 | layer = getFirstModifiableDataLayer();
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| 298 | }
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[11735] | 299 | Collection<OsmPrimitive> primitivesToUpdate = searchPrimitivesToUpdate(bounds, layer.data);
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[7636] | 300 | layer.mergeFrom(dataSet);
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[12630] | 301 | MapFrame map = MainApplication.getMap();
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| 302 | if (map != null && zoomAfterDownload && bounds != null) {
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| 303 | map.mapView.zoomTo(new ViewportData(computeBbox(bounds)));
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[8927] | 304 | }
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[11735] | 305 | if (!primitivesToUpdate.isEmpty()) {
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[12634] | 306 | MainApplication.worker.submit(new UpdatePrimitivesTask(layer, primitivesToUpdate));
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[11735] | 307 | }
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[7636] | 308 | layer.onPostDownloadFromServer();
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[1670] | 309 | }
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[1169] | 310 | }
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[11735] | 311 |
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| 312 | /**
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| 313 | * Look for primitives deleted on server (thus absent from downloaded data)
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| 314 | * but still present in existing data layer
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[11836] | 315 | * @param bounds download bounds
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[11735] | 316 | * @param ds existing data set
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| 317 | * @return the primitives to update
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| 318 | */
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[11836] | 319 | private Collection<OsmPrimitive> searchPrimitivesToUpdate(Bounds bounds, DataSet ds) {
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| 320 | if (bounds == null)
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[11849] | 321 | return Collections.emptySet();
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[11735] | 322 | Collection<OsmPrimitive> col = new ArrayList<>();
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[11836] | 323 | ds.searchNodes(bounds.toBBox()).stream().filter(n -> !n.isNew() && !dataSet.containsNode(n)).forEachOrdered(col::add);
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[11735] | 324 | if (!col.isEmpty()) {
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| 325 | Set<Way> ways = new HashSet<>();
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| 326 | Set<Relation> rels = new HashSet<>();
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| 327 | for (OsmPrimitive n : col) {
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| 328 | for (OsmPrimitive ref : n.getReferrers()) {
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| 329 | if (ref.isNew()) {
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| 330 | continue;
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| 331 | } else if (ref instanceof Way) {
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| 332 | ways.add((Way) ref);
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| 333 | } else if (ref instanceof Relation) {
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| 334 | rels.add((Relation) ref);
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| 335 | }
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| 336 | }
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| 337 | }
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| 338 | ways.stream().filter(w -> !dataSet.containsWay(w)).forEachOrdered(col::add);
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| 339 | rels.stream().filter(r -> !dataSet.containsRelation(r)).forEachOrdered(col::add);
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| 340 | }
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| 341 | return col;
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| 342 | }
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[7636] | 343 | }
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[6069] | 344 |
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[7636] | 345 | protected class DownloadTask extends AbstractInternalTask {
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| 346 | protected final OsmServerReader reader;
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| 347 |
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[8927] | 348 | /**
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| 349 | * Constructs a new {@code DownloadTask}.
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| 350 | * @param newLayer if {@code true}, force download to a new layer
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| 351 | * @param reader OSM data reader
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| 352 | * @param progressMonitor progress monitor
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| 353 | */
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[7636] | 354 | public DownloadTask(boolean newLayer, OsmServerReader reader, ProgressMonitor progressMonitor) {
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[8942] | 355 | this(newLayer, reader, progressMonitor, true);
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| 356 | }
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| 357 |
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| 358 | /**
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| 359 | * Constructs a new {@code DownloadTask}.
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| 360 | * @param newLayer if {@code true}, force download to a new layer
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| 361 | * @param reader OSM data reader
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| 362 | * @param progressMonitor progress monitor
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| 363 | * @param zoomAfterDownload If true, the map view will zoom to download area after download
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| 364 | * @since 8942
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| 365 | */
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| 366 | public DownloadTask(boolean newLayer, OsmServerReader reader, ProgressMonitor progressMonitor, boolean zoomAfterDownload) {
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| 367 | super(newLayer, tr("Downloading data"), progressMonitor, false, zoomAfterDownload);
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[7636] | 368 | this.reader = reader;
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| 369 | }
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| 370 |
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| 371 | protected DataSet parseDataSet() throws OsmTransferException {
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| 372 | return reader.parseOsm(progressMonitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
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| 373 | }
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| 374 |
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| 375 | @Override
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| 376 | public void realRun() throws IOException, SAXException, OsmTransferException {
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| 377 | try {
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| 378 | if (isCanceled())
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| 379 | return;
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| 380 | dataSet = parseDataSet();
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[10212] | 381 | } catch (OsmTransferException e) {
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[7636] | 382 | if (isCanceled()) {
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[12620] | 383 | Logging.info(tr("Ignoring exception because download has been canceled. Exception was: {0}", e.toString()));
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[7636] | 384 | return;
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| 385 | }
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| 386 | if (e instanceof OsmTransferCanceledException) {
|
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| 387 | setCanceled(true);
|
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| 388 | return;
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[10212] | 389 | } else {
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[7636] | 390 | rememberException(e);
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| 391 | }
|
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| 392 | DownloadOsmTask.this.setFailed(true);
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[4530] | 393 | }
|
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| 394 | }
|
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[175] | 395 |
|
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[7636] | 396 | @Override
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| 397 | protected void finish() {
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| 398 | if (isFailed() || isCanceled())
|
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| 399 | return;
|
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| 400 | if (dataSet == null)
|
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| 401 | return; // user canceled download or error occurred
|
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| 402 | if (dataSet.allPrimitives().isEmpty()) {
|
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[8927] | 403 | if (warnAboutEmptyArea) {
|
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| 404 | rememberErrorMessage(tr("No data found in this area."));
|
---|
| 405 | }
|
---|
[8540] | 406 | // need to synthesize a download bounds lest the visual indication of downloaded area doesn't work
|
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[11627] | 407 | dataSet.addDataSource(new DataSource(currentBounds != null ? currentBounds :
|
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[9214] | 408 | new Bounds(LatLon.ZERO), "OpenStreetMap server"));
|
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[7636] | 409 | }
|
---|
| 410 |
|
---|
| 411 | rememberDownloadedData(dataSet);
|
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| 412 | loadData(newLayerName, currentBounds);
|
---|
| 413 | }
|
---|
| 414 |
|
---|
| 415 | @Override
|
---|
| 416 | protected void cancel() {
|
---|
[2322] | 417 | setCanceled(true);
|
---|
[1670] | 418 | if (reader != null) {
|
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[1169] | 419 | reader.cancel();
|
---|
[1670] | 420 | }
|
---|
[1169] | 421 | }
|
---|
| 422 | }
|
---|
[5691] | 423 |
|
---|
| 424 | @Override
|
---|
| 425 | public String getConfirmationMessage(URL url) {
|
---|
| 426 | if (url != null) {
|
---|
| 427 | String urlString = url.toExternalForm();
|
---|
[12679] | 428 | if (urlString.matches(OsmUrlPattern.OSM_API_URL.pattern())) {
|
---|
[5691] | 429 | // TODO: proper i18n after stabilization
|
---|
[7005] | 430 | Collection<String> items = new ArrayList<>();
|
---|
[8846] | 431 | items.add(tr("OSM Server URL:") + ' ' + url.getHost());
|
---|
[6524] | 432 | items.add(tr("Command")+": "+url.getPath());
|
---|
[5691] | 433 | if (url.getQuery() != null) {
|
---|
[6524] | 434 | items.add(tr("Request details: {0}", url.getQuery().replaceAll(",\\s*", ", ")));
|
---|
[5691] | 435 | }
|
---|
[6524] | 436 | return Utils.joinAsHtmlUnorderedList(items);
|
---|
[5691] | 437 | }
|
---|
| 438 | // TODO: other APIs
|
---|
| 439 | }
|
---|
| 440 | return null;
|
---|
| 441 | }
|
---|
[175] | 442 | }
|
---|