001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.io.session;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.io.File;
007import java.io.IOException;
008import java.util.ArrayList;
009import java.util.Date;
010import java.util.List;
011
012import org.openstreetmap.josm.Main;
013import org.openstreetmap.josm.data.coor.LatLon;
014import org.openstreetmap.josm.gui.layer.GpxLayer;
015import org.openstreetmap.josm.gui.layer.Layer;
016import org.openstreetmap.josm.gui.layer.geoimage.GeoImageLayer;
017import org.openstreetmap.josm.gui.layer.geoimage.ImageEntry;
018import org.openstreetmap.josm.gui.progress.ProgressMonitor;
019import org.openstreetmap.josm.io.IllegalDataException;
020import org.w3c.dom.Element;
021import org.w3c.dom.Node;
022import org.w3c.dom.NodeList;
023
024/**
025 * Session importer for {@link GeoImageLayer}.
026 * @since 5505
027 */
028public class GeoImageSessionImporter implements SessionLayerImporter {
029
030    @Override
031    public Layer load(Element elem, SessionReader.ImportSupport support, ProgressMonitor progressMonitor)
032            throws IOException, IllegalDataException {
033        String version = elem.getAttribute("version");
034        if (!"0.1".equals(version)) {
035            throw new IllegalDataException(tr("Version ''{0}'' of meta data for geoimage layer is not supported. Expected: 0.1", version));
036        }
037
038        List<ImageEntry> entries = new ArrayList<>();
039        NodeList imgNodes = elem.getChildNodes();
040        boolean useThumbs = false;
041        for (int i = 0; i < imgNodes.getLength(); ++i) {
042            Node imgNode = imgNodes.item(i);
043            if (imgNode.getNodeType() == Node.ELEMENT_NODE) {
044                Element imgElem = (Element) imgNode;
045                if ("geoimage".equals(imgElem.getTagName())) {
046                    ImageEntry entry = new ImageEntry();
047                    NodeList attrNodes = imgElem.getChildNodes();
048                    for (int j = 0; j < attrNodes.getLength(); ++j) {
049                        Node attrNode = attrNodes.item(j);
050                        if (attrNode.getNodeType() == Node.ELEMENT_NODE) {
051                            Element attrElem = (Element) attrNode;
052                            try {
053                                switch(attrElem.getTagName()) {
054                                case "file":
055                                    entry.setFile(new File(attrElem.getTextContent()));
056                                    break;
057                                case "position":
058                                    double lat = Double.parseDouble(attrElem.getAttribute("lat"));
059                                    double lon = Double.parseDouble(attrElem.getAttribute("lon"));
060                                    entry.setPos(new LatLon(lat, lon));
061                                    break;
062                                case "speed":
063                                    entry.setSpeed(Double.valueOf(attrElem.getTextContent()));
064                                    break;
065                                case "elevation":
066                                    entry.setElevation(Double.valueOf(attrElem.getTextContent()));
067                                    break;
068                                case "gps-time":
069                                    entry.setGpsTime(new Date(Long.parseLong(attrElem.getTextContent())));
070                                    break;
071                                case "exif-orientation":
072                                    entry.setExifOrientation(Integer.valueOf(attrElem.getTextContent()));
073                                    break;
074                                case "exif-time":
075                                    entry.setExifTime(new Date(Long.parseLong(attrElem.getTextContent())));
076                                    break;
077                                case "exif-gps-time":
078                                    entry.setExifGpsTime(new Date(Long.parseLong(attrElem.getTextContent())));
079                                    break;
080                                case "exif-coordinates":
081                                    entry.setExifCoor(new LatLon(
082                                            Double.parseDouble(attrElem.getAttribute("lat")),
083                                            Double.parseDouble(attrElem.getAttribute("lon"))));
084                                    break;
085                                case "exif-image-direction":
086                                    entry.setExifImgDir(Double.parseDouble(attrElem.getTextContent()));
087                                    break;
088                                case "is-new-gps-data":
089                                    if (Boolean.parseBoolean(attrElem.getTextContent())) {
090                                        entry.flagNewGpsData();
091                                    }
092                                }
093                                // TODO: handle thumbnail loading
094                            } catch (NumberFormatException e) {
095                                // do nothing
096                                if (Main.isTraceEnabled()) {
097                                    Main.trace(e.getMessage());
098                                }
099                            }
100                        }
101                    }
102                    entries.add(entry);
103                } else if ("show-thumbnails".equals(imgElem.getTagName())) {
104                    useThumbs = Boolean.parseBoolean(imgElem.getTextContent());
105                }
106            }
107        }
108
109        GpxLayer gpxLayer = null;
110        List<SessionReader.LayerDependency> deps = support.getLayerDependencies();
111        if (!deps.isEmpty()) {
112            Layer layer = deps.get(0).getLayer();
113            if (layer instanceof GpxLayer) {
114                gpxLayer = (GpxLayer) layer;
115            }
116        }
117
118        return new GeoImageLayer(entries, gpxLayer, useThumbs);
119    }
120}