001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.layer.gpx;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.awt.Component;
007import java.awt.geom.Path2D;
008import java.util.Collection;
009import java.util.List;
010import java.util.stream.Collectors;
011
012import javax.swing.Action;
013import javax.swing.JMenuItem;
014
015import org.openstreetmap.josm.actions.DownloadAlongAction;
016import org.openstreetmap.josm.data.gpx.GpxData;
017import org.openstreetmap.josm.data.gpx.WayPoint;
018import org.openstreetmap.josm.gui.PleaseWaitRunnable;
019import org.openstreetmap.josm.gui.help.HelpUtil;
020import org.openstreetmap.josm.gui.layer.GpxLayer;
021import org.openstreetmap.josm.gui.layer.Layer;
022import org.openstreetmap.josm.tools.Utils;
023
024/**
025 * Action that issues a series of download requests to the API, following the GPX track.
026 *
027 * @author fred
028 * @since 5715
029 */
030public class DownloadAlongTrackAction extends DownloadAlongAction implements Layer.LayerAction, Layer.MultiLayerAction {
031
032    private static final int NEAR_TRACK = 0;
033    private static final int NEAR_WAYPOINTS = 1;
034    private static final int NEAR_BOTH = 2;
035
036    private static final String PREF_DOWNLOAD_ALONG_TRACK_OSM = "downloadAlongTrack.download.osm";
037    private static final String PREF_DOWNLOAD_ALONG_TRACK_GPS = "downloadAlongTrack.download.gps";
038
039    private static final String PREF_DOWNLOAD_ALONG_TRACK_DISTANCE = "downloadAlongTrack.distance";
040    private static final String PREF_DOWNLOAD_ALONG_TRACK_AREA = "downloadAlongTrack.area";
041    private static final String PREF_DOWNLOAD_ALONG_TRACK_NEAR = "downloadAlongTrack.near";
042
043    private final transient Collection<GpxData> data;
044
045    /**
046     * Constructs a new {@code DownloadAlongTrackAction}
047     * @param data The GPX data used to download along
048     */
049    public DownloadAlongTrackAction(Collection<GpxData> data) {
050        super(tr("Download from OSM along this track"), "downloadalongtrack", null, null, false);
051        this.data = data;
052    }
053
054    @Override
055    protected PleaseWaitRunnable createTask() {
056        final DownloadAlongPanel panel = new DownloadAlongPanel(
057                PREF_DOWNLOAD_ALONG_TRACK_OSM, PREF_DOWNLOAD_ALONG_TRACK_GPS,
058                PREF_DOWNLOAD_ALONG_TRACK_DISTANCE, PREF_DOWNLOAD_ALONG_TRACK_AREA, PREF_DOWNLOAD_ALONG_TRACK_NEAR);
059
060        int ret = panel.showInDownloadDialog(tr("Download from OSM along this track"), HelpUtil.ht("/Action/DownloadAlongTrack"));
061        if (0 != ret && 1 != ret) {
062            return null;
063        }
064
065        final int near = panel.getNear();
066
067        // Convert the GPX data into a Path2D.
068        Path2D gpxPath = new Path2D.Double();
069        if (near == NEAR_TRACK || near == NEAR_BOTH) {
070            data.stream().flatMap(GpxData::getTrackSegmentsStream).forEach(segment -> {
071                boolean first = true;
072                for (WayPoint p : segment.getWayPoints()) {
073                    if (first) {
074                        gpxPath.moveTo(p.lon(), p.lat());
075                        first = false;
076                    } else {
077                        gpxPath.lineTo(p.lon(), p.lat());
078                    }
079                }
080            });
081        }
082        if (near == NEAR_WAYPOINTS || near == NEAR_BOTH) {
083            data.stream().flatMap(d -> d.getWaypoints().stream()).forEach(p -> {
084                gpxPath.moveTo(p.lon(), p.lat());
085                gpxPath.closePath();
086            });
087        }
088        return createCalcTask(gpxPath, panel, tr("Download from OSM along this track"), 1 == ret);
089    }
090
091    @Override
092    public Component createMenuComponent() {
093        return new JMenuItem(this);
094    }
095
096    @Override
097    public boolean supportLayers(List<Layer> layers) {
098        return !Utils.filteredCollection(layers, GpxLayer.class).isEmpty();
099    }
100
101    @Override
102    public Action getMultiLayerAction(List<Layer> layers) {
103        final List<GpxData> gpxData = Utils.filteredCollection(layers, GpxLayer.class)
104                .stream().map(layer -> layer.data)
105                .collect(Collectors.toList());
106        return new DownloadAlongTrackAction(gpxData);
107    }
108}