[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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[11553] | 13 | import java.util.Optional;
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[11735] | 14 | import java.util.Set;
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[1465] | 15 | import java.util.concurrent.Future;
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[5024] | 16 | import java.util.regex.Matcher;
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| 17 | import java.util.regex.Pattern;
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[13434] | 18 | import java.util.stream.Stream;
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[153] | 19 |
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[1465] | 20 | import org.openstreetmap.josm.data.Bounds;
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[7575] | 21 | import org.openstreetmap.josm.data.DataSource;
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[7816] | 22 | import org.openstreetmap.josm.data.ProjectionBounds;
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[11774] | 23 | import org.openstreetmap.josm.data.ViewportData;
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[3066] | 24 | import org.openstreetmap.josm.data.coor.LatLon;
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[153] | 25 | import org.openstreetmap.josm.data.osm.DataSet;
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[11735] | 26 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 27 | import org.openstreetmap.josm.data.osm.Relation;
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| 28 | import org.openstreetmap.josm.data.osm.Way;
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[2477] | 29 | import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
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[12630] | 30 | import org.openstreetmap.josm.gui.MainApplication;
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| 31 | import org.openstreetmap.josm.gui.MapFrame;
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[153] | 32 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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[11735] | 33 | import org.openstreetmap.josm.gui.io.UpdatePrimitivesTask;
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[153] | 34 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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[5402] | 35 | import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
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[1811] | 36 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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[153] | 37 | import org.openstreetmap.josm.io.BoundingBoxDownloader;
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[1146] | 38 | import org.openstreetmap.josm.io.OsmServerLocationReader;
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[12679] | 39 | import org.openstreetmap.josm.io.OsmServerLocationReader.OsmUrlPattern;
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[1146] | 40 | import org.openstreetmap.josm.io.OsmServerReader;
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[4310] | 41 | import org.openstreetmap.josm.io.OsmTransferCanceledException;
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[1670] | 42 | import org.openstreetmap.josm.io.OsmTransferException;
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[12620] | 43 | import org.openstreetmap.josm.tools.Logging;
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[6524] | 44 | import org.openstreetmap.josm.tools.Utils;
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[5782] | 45 | import org.xml.sax.SAXException;
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[153] | 46 |
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| 47 | /**
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| 48 | * Open the download dialog and download the data.
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| 49 | * Run in the worker thread.
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| 50 | */
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[8908] | 51 | public class DownloadOsmTask extends AbstractDownloadTask<DataSet> {
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[6069] | 52 |
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[4523] | 53 | protected Bounds currentBounds;
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| 54 | protected DownloadTask downloadTask;
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[6069] | 55 |
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[8840] | 56 | protected String newLayerName;
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[6069] | 57 |
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[8927] | 58 | /** This allows subclasses to ignore this warning */
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| 59 | protected boolean warnAboutEmptyArea = true;
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| 60 |
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[6031] | 61 | @Override
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| 62 | public String[] getPatterns() {
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| 63 | if (this.getClass() == DownloadOsmTask.class) {
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[12679] | 64 | return Arrays.stream(OsmUrlPattern.values()).map(OsmUrlPattern::pattern).toArray(String[]::new);
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[6031] | 65 | } else {
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| 66 | return super.getPatterns();
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| 67 | }
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| 68 | }
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[1082] | 69 |
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[6031] | 70 | @Override
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| 71 | public String getTitle() {
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| 72 | if (this.getClass() == DownloadOsmTask.class) {
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| 73 | return tr("Download OSM");
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| 74 | } else {
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| 75 | return super.getTitle();
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| 76 | }
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| 77 | }
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| 78 |
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[5097] | 79 | @Override
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[2328] | 80 | public Future<?> download(boolean newLayer, Bounds downloadArea, ProgressMonitor progressMonitor) {
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[5097] | 81 | return download(new BoundingBoxDownloader(downloadArea), newLayer, downloadArea, progressMonitor);
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| 82 | }
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[2414] | 83 |
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[5402] | 84 | /**
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| 85 | * Asynchronously launches the download task for a given bounding box.
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| 86 | *
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| 87 | * Set <code>progressMonitor</code> to null, if the task should create, open, and close a progress monitor.
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| 88 | * Set progressMonitor to {@link NullProgressMonitor#INSTANCE} if progress information is to
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| 89 | * be discarded.
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| 90 | *
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| 91 | * You can wait for the asynchronous download task to finish by synchronizing on the returned
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| 92 | * {@link Future}, but make sure not to freeze up JOSM. Example:
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| 93 | * <pre>
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[6830] | 94 | * Future<?> future = task.download(...);
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[5402] | 95 | * // DON'T run this on the Swing EDT or JOSM will freeze
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| 96 | * future.get(); // waits for the dowload task to complete
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| 97 | * </pre>
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| 98 | *
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| 99 | * The following example uses a pattern which is better suited if a task is launched from
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| 100 | * the Swing EDT:
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| 101 | * <pre>
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[6830] | 102 | * final Future<?> future = task.download(...);
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[5402] | 103 | * Runnable runAfterTask = new Runnable() {
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| 104 | * public void run() {
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| 105 | * // this is not strictly necessary because of the type of executor service
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| 106 | * // Main.worker is initialized with, but it doesn't harm either
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| 107 | * //
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| 108 | * future.get(); // wait for the download task to complete
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| 109 | * doSomethingAfterTheTaskCompleted();
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| 110 | * }
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| 111 | * }
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[12634] | 112 | * MainApplication.worker.submit(runAfterTask);
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[5402] | 113 | * </pre>
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| 114 | * @param reader the reader used to parse OSM data (see {@link OsmServerReader#parseOsm})
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| 115 | * @param newLayer true, if the data is to be downloaded into a new layer. If false, the task
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| 116 | * selects one of the existing layers as download layer, preferably the active layer.
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| 117 | * @param downloadArea the area to download
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| 118 | * @param progressMonitor the progressMonitor
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| 119 | * @return the future representing the asynchronous task
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| 120 | */
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[5097] | 121 | public Future<?> download(OsmServerReader reader, boolean newLayer, Bounds downloadArea, ProgressMonitor progressMonitor) {
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[11658] | 122 | return download(new DownloadTask(newLayer, reader, progressMonitor, zoomAfterDownload), downloadArea);
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[5097] | 123 | }
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| 124 |
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| 125 | protected Future<?> download(DownloadTask downloadTask, Bounds downloadArea) {
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| 126 | this.downloadTask = downloadTask;
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| 127 | this.currentBounds = new Bounds(downloadArea);
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[2322] | 128 | // We need submit instead of execute so we can wait for it to finish and get the error
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| 129 | // message if necessary. If no one calls getErrorMessage() it just behaves like execute.
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[12634] | 130 | return MainApplication.worker.submit(downloadTask);
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[2322] | 131 | }
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| 132 |
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[6588] | 133 | /**
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| 134 | * This allows subclasses to perform operations on the URL before {@link #loadUrl} is performed.
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[8927] | 135 | * @param url the original URL
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| 136 | * @return the modified URL
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[6588] | 137 | */
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| 138 | protected String modifyUrlBeforeLoad(String url) {
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[5782] | 139 | return url;
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| 140 | }
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[6069] | 141 |
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[2322] | 142 | /**
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| 143 | * Loads a given URL from the OSM Server
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[8927] | 144 | * @param newLayer True if the data should be saved to a new layer
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[5369] | 145 | * @param url The URL as String
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[2322] | 146 | */
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[6031] | 147 | @Override
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[8927] | 148 | public Future<?> loadUrl(boolean newLayer, String url, ProgressMonitor progressMonitor) {
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| 149 | String newUrl = modifyUrlBeforeLoad(url);
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| 150 | downloadTask = new DownloadTask(newLayer,
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| 151 | new OsmServerLocationReader(newUrl),
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[2322] | 152 | progressMonitor);
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[3064] | 153 | currentBounds = null;
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[5024] | 154 | // Extract .osm filename from URL to set the new layer name
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[8927] | 155 | extractOsmFilename("https?://.*/(.*\\.osm)", newUrl);
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[12634] | 156 | return MainApplication.worker.submit(downloadTask);
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[2322] | 157 | }
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[6069] | 158 |
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[5345] | 159 | protected final void extractOsmFilename(String pattern, String url) {
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| 160 | Matcher matcher = Pattern.compile(pattern).matcher(url);
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| 161 | newLayerName = matcher.matches() ? matcher.group(1) : null;
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| 162 | }
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[6031] | 163 |
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[4521] | 164 | @Override
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[2322] | 165 | public void cancel() {
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| 166 | if (downloadTask != null) {
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| 167 | downloadTask.cancel();
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| 168 | }
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| 169 | }
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| 170 |
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[7749] | 171 | @Override
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| 172 | public boolean isSafeForRemotecontrolRequests() {
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| 173 | return true;
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| 174 | }
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| 175 |
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[11774] | 176 | @Override
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| 177 | public ProjectionBounds getDownloadProjectionBounds() {
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| 178 | return downloadTask != null ? downloadTask.computeBbox(currentBounds) : null;
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| 179 | }
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| 180 |
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[7636] | 181 | /**
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| 182 | * Superclass of internal download task.
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[7637] | 183 | * @since 7636
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[7636] | 184 | */
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[8130] | 185 | public abstract static class AbstractInternalTask extends PleaseWaitRunnable {
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[7636] | 186 |
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| 187 | protected final boolean newLayer;
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[8927] | 188 | protected final boolean zoomAfterDownload;
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[4523] | 189 | protected DataSet dataSet;
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[1647] | 190 |
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[7636] | 191 | /**
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| 192 | * Constructs a new {@code AbstractInternalTask}.
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| 193 | * @param newLayer if {@code true}, force download to a new layer
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| 194 | * @param title message for the user
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| 195 | * @param ignoreException If true, exception will be propagated to calling code. If false then
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| 196 | * exception will be thrown directly in EDT. When this runnable is executed using executor framework
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| 197 | * then use false unless you read result of task (because exception will get lost if you don't)
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[8927] | 198 | * @param zoomAfterDownload If true, the map view will zoom to download area after download
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[7636] | 199 | */
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[8927] | 200 | public AbstractInternalTask(boolean newLayer, String title, boolean ignoreException, boolean zoomAfterDownload) {
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[7636] | 201 | super(title, ignoreException);
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[1169] | 202 | this.newLayer = newLayer;
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[8927] | 203 | this.zoomAfterDownload = zoomAfterDownload;
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[1169] | 204 | }
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[6069] | 205 |
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[7636] | 206 | /**
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| 207 | * Constructs a new {@code AbstractInternalTask}.
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| 208 | * @param newLayer if {@code true}, force download to a new layer
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| 209 | * @param title message for the user
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| 210 | * @param progressMonitor progress monitor
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| 211 | * @param ignoreException If true, exception will be propagated to calling code. If false then
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| 212 | * exception will be thrown directly in EDT. When this runnable is executed using executor framework
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| 213 | * then use false unless you read result of task (because exception will get lost if you don't)
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[8927] | 214 | * @param zoomAfterDownload If true, the map view will zoom to download area after download
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[7636] | 215 | */
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[8927] | 216 | public AbstractInternalTask(boolean newLayer, String title, ProgressMonitor progressMonitor, boolean ignoreException,
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| 217 | boolean zoomAfterDownload) {
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[7636] | 218 | super(title, progressMonitor, ignoreException);
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| 219 | this.newLayer = newLayer;
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[8927] | 220 | this.zoomAfterDownload = zoomAfterDownload;
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[4530] | 221 | }
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[153] | 222 |
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[1810] | 223 | protected OsmDataLayer getEditLayer() {
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[12630] | 224 | if (!MainApplication.isDisplayingMapView()) return null;
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[12636] | 225 | return MainApplication.getLayerManager().getEditLayer();
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[1810] | 226 | }
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| 227 |
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[13434] | 228 | /**
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| 229 | * Returns the number of modifiable data layers
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| 230 | * @return number of modifiable data layers
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| 231 | * @deprecated Use {@link #getNumModifiableDataLayers}
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| 232 | */
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| 233 | @Deprecated
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[1869] | 234 | protected int getNumDataLayers() {
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[13434] | 235 | return (int) getNumModifiableDataLayers();
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[1869] | 236 | }
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| 237 |
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[13434] | 238 | private static Stream<OsmDataLayer> getModifiableDataLayers() {
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| 239 | return MainApplication.getLayerManager().getLayersOfType(OsmDataLayer.class)
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[13453] | 240 | .stream().filter(OsmDataLayer::isDownloadable);
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[1869] | 241 | }
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[6069] | 242 |
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[13434] | 243 | /**
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| 244 | * Returns the number of modifiable data layers
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| 245 | * @return number of modifiable data layers
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| 246 | * @since 13434
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| 247 | */
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| 248 | protected long getNumModifiableDataLayers() {
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| 249 | return getModifiableDataLayers().count();
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| 250 | }
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| 251 |
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| 252 | /**
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| 253 | * Returns the first modifiable data layer
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| 254 | * @return the first modifiable data layer
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| 255 | * @since 13434
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| 256 | */
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| 257 | protected OsmDataLayer getFirstModifiableDataLayer() {
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| 258 | return getModifiableDataLayers().findFirst().orElse(null);
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| 259 | }
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| 260 |
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[5024] | 261 | protected OsmDataLayer createNewLayer(String layerName) {
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| 262 | if (layerName == null || layerName.isEmpty()) {
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| 263 | layerName = OsmDataLayer.createNewName();
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| 264 | }
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| 265 | return new OsmDataLayer(dataSet, layerName, null);
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| 266 | }
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[6069] | 267 |
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[4523] | 268 | protected OsmDataLayer createNewLayer() {
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[5024] | 269 | return createNewLayer(null);
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[4523] | 270 | }
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[1869] | 271 |
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[7816] | 272 | protected ProjectionBounds computeBbox(Bounds bounds) {
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[7636] | 273 | BoundingXYVisitor v = new BoundingXYVisitor();
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| 274 | if (bounds != null) {
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| 275 | v.visit(bounds);
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| 276 | } else {
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| 277 | v.computeBoundingBox(dataSet.getNodes());
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[1082] | 278 | }
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[7816] | 279 | return v.getBounds();
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| 280 | }
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| 281 |
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[10409] | 282 | protected OsmDataLayer addNewLayerIfRequired(String newLayerName) {
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[13434] | 283 | long numDataLayers = getNumModifiableDataLayers();
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[1869] | 284 | if (newLayer || numDataLayers == 0 || (numDataLayers > 1 && getEditLayer() == null)) {
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| 285 | // the user explicitly wants a new layer, we don't have any layer at all
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| 286 | // or it is not clear which layer to merge to
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[7636] | 287 | final OsmDataLayer layer = createNewLayer(newLayerName);
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[12636] | 288 | MainApplication.getLayerManager().addLayer(layer, zoomAfterDownload);
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[7636] | 289 | return layer;
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| 290 | }
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| 291 | return null;
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| 292 | }
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| 293 |
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| 294 | protected void loadData(String newLayerName, Bounds bounds) {
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[10409] | 295 | OsmDataLayer layer = addNewLayerIfRequired(newLayerName);
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[7636] | 296 | if (layer == null) {
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[13434] | 297 | layer = Optional.ofNullable(getEditLayer()).orElseGet(this::getFirstModifiableDataLayer);
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[11735] | 298 | Collection<OsmPrimitive> primitivesToUpdate = searchPrimitivesToUpdate(bounds, layer.data);
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[7636] | 299 | layer.mergeFrom(dataSet);
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[12630] | 300 | MapFrame map = MainApplication.getMap();
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| 301 | if (map != null && zoomAfterDownload && bounds != null) {
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| 302 | map.mapView.zoomTo(new ViewportData(computeBbox(bounds)));
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[8927] | 303 | }
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[11735] | 304 | if (!primitivesToUpdate.isEmpty()) {
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[12634] | 305 | MainApplication.worker.submit(new UpdatePrimitivesTask(layer, primitivesToUpdate));
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[11735] | 306 | }
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[7636] | 307 | layer.onPostDownloadFromServer();
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[1670] | 308 | }
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[1169] | 309 | }
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[11735] | 310 |
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| 311 | /**
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| 312 | * Look for primitives deleted on server (thus absent from downloaded data)
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| 313 | * but still present in existing data layer
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[11836] | 314 | * @param bounds download bounds
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[11735] | 315 | * @param ds existing data set
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| 316 | * @return the primitives to update
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| 317 | */
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[11836] | 318 | private Collection<OsmPrimitive> searchPrimitivesToUpdate(Bounds bounds, DataSet ds) {
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| 319 | if (bounds == null)
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[11849] | 320 | return Collections.emptySet();
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[11735] | 321 | Collection<OsmPrimitive> col = new ArrayList<>();
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[11836] | 322 | ds.searchNodes(bounds.toBBox()).stream().filter(n -> !n.isNew() && !dataSet.containsNode(n)).forEachOrdered(col::add);
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[11735] | 323 | if (!col.isEmpty()) {
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| 324 | Set<Way> ways = new HashSet<>();
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| 325 | Set<Relation> rels = new HashSet<>();
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| 326 | for (OsmPrimitive n : col) {
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| 327 | for (OsmPrimitive ref : n.getReferrers()) {
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| 328 | if (ref.isNew()) {
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| 329 | continue;
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| 330 | } else if (ref instanceof Way) {
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| 331 | ways.add((Way) ref);
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| 332 | } else if (ref instanceof Relation) {
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| 333 | rels.add((Relation) ref);
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| 334 | }
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| 335 | }
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| 336 | }
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| 337 | ways.stream().filter(w -> !dataSet.containsWay(w)).forEachOrdered(col::add);
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| 338 | rels.stream().filter(r -> !dataSet.containsRelation(r)).forEachOrdered(col::add);
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| 339 | }
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| 340 | return col;
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| 341 | }
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[7636] | 342 | }
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[6069] | 343 |
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[7636] | 344 | protected class DownloadTask extends AbstractInternalTask {
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| 345 | protected final OsmServerReader reader;
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| 346 |
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[8927] | 347 | /**
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| 348 | * Constructs a new {@code DownloadTask}.
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| 349 | * @param newLayer if {@code true}, force download to a new layer
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| 350 | * @param reader OSM data reader
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| 351 | * @param progressMonitor progress monitor
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| 352 | */
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[7636] | 353 | public DownloadTask(boolean newLayer, OsmServerReader reader, ProgressMonitor progressMonitor) {
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[8942] | 354 | this(newLayer, reader, progressMonitor, true);
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| 355 | }
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| 356 |
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| 357 | /**
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| 358 | * Constructs a new {@code DownloadTask}.
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| 359 | * @param newLayer if {@code true}, force download to a new layer
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| 360 | * @param reader OSM data reader
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| 361 | * @param progressMonitor progress monitor
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| 362 | * @param zoomAfterDownload If true, the map view will zoom to download area after download
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| 363 | * @since 8942
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| 364 | */
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| 365 | public DownloadTask(boolean newLayer, OsmServerReader reader, ProgressMonitor progressMonitor, boolean zoomAfterDownload) {
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| 366 | super(newLayer, tr("Downloading data"), progressMonitor, false, zoomAfterDownload);
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[7636] | 367 | this.reader = reader;
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| 368 | }
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| 369 |
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| 370 | protected DataSet parseDataSet() throws OsmTransferException {
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| 371 | return reader.parseOsm(progressMonitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
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| 372 | }
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| 373 |
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| 374 | @Override
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| 375 | public void realRun() throws IOException, SAXException, OsmTransferException {
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| 376 | try {
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| 377 | if (isCanceled())
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| 378 | return;
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| 379 | dataSet = parseDataSet();
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[10212] | 380 | } catch (OsmTransferException e) {
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[7636] | 381 | if (isCanceled()) {
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[12620] | 382 | Logging.info(tr("Ignoring exception because download has been canceled. Exception was: {0}", e.toString()));
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[7636] | 383 | return;
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| 384 | }
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| 385 | if (e instanceof OsmTransferCanceledException) {
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| 386 | setCanceled(true);
|
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| 387 | return;
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[10212] | 388 | } else {
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[7636] | 389 | rememberException(e);
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| 390 | }
|
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| 391 | DownloadOsmTask.this.setFailed(true);
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[4530] | 392 | }
|
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| 393 | }
|
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[175] | 394 |
|
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[7636] | 395 | @Override
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| 396 | protected void finish() {
|
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| 397 | if (isFailed() || isCanceled())
|
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| 398 | return;
|
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| 399 | if (dataSet == null)
|
---|
| 400 | return; // user canceled download or error occurred
|
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| 401 | if (dataSet.allPrimitives().isEmpty()) {
|
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[8927] | 402 | if (warnAboutEmptyArea) {
|
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| 403 | rememberErrorMessage(tr("No data found in this area."));
|
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| 404 | }
|
---|
[8540] | 405 | // need to synthesize a download bounds lest the visual indication of downloaded area doesn't work
|
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[11627] | 406 | dataSet.addDataSource(new DataSource(currentBounds != null ? currentBounds :
|
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[9214] | 407 | new Bounds(LatLon.ZERO), "OpenStreetMap server"));
|
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[7636] | 408 | }
|
---|
| 409 |
|
---|
| 410 | rememberDownloadedData(dataSet);
|
---|
| 411 | loadData(newLayerName, currentBounds);
|
---|
| 412 | }
|
---|
| 413 |
|
---|
| 414 | @Override
|
---|
| 415 | protected void cancel() {
|
---|
[2322] | 416 | setCanceled(true);
|
---|
[1670] | 417 | if (reader != null) {
|
---|
[1169] | 418 | reader.cancel();
|
---|
[1670] | 419 | }
|
---|
[1169] | 420 | }
|
---|
| 421 | }
|
---|
[5691] | 422 |
|
---|
| 423 | @Override
|
---|
| 424 | public String getConfirmationMessage(URL url) {
|
---|
| 425 | if (url != null) {
|
---|
| 426 | String urlString = url.toExternalForm();
|
---|
[12679] | 427 | if (urlString.matches(OsmUrlPattern.OSM_API_URL.pattern())) {
|
---|
[5691] | 428 | // TODO: proper i18n after stabilization
|
---|
[7005] | 429 | Collection<String> items = new ArrayList<>();
|
---|
[8846] | 430 | items.add(tr("OSM Server URL:") + ' ' + url.getHost());
|
---|
[6524] | 431 | items.add(tr("Command")+": "+url.getPath());
|
---|
[5691] | 432 | if (url.getQuery() != null) {
|
---|
[6524] | 433 | items.add(tr("Request details: {0}", url.getQuery().replaceAll(",\\s*", ", ")));
|
---|
[5691] | 434 | }
|
---|
[6524] | 435 | return Utils.joinAsHtmlUnorderedList(items);
|
---|
[5691] | 436 | }
|
---|
| 437 | // TODO: other APIs
|
---|
| 438 | }
|
---|
| 439 | return null;
|
---|
| 440 | }
|
---|
[175] | 441 | }
|
---|