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