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.IOException;
007import java.util.HashMap;
008import java.util.Map;
009
010import org.openstreetmap.josm.data.Preferences;
011import org.openstreetmap.josm.data.imagery.ImageryInfo;
012import org.openstreetmap.josm.data.imagery.ImageryInfo.ImageryPreferenceEntry;
013import org.openstreetmap.josm.gui.layer.AbstractTileSourceLayer;
014import org.openstreetmap.josm.gui.layer.ImageryLayer;
015import org.openstreetmap.josm.gui.layer.Layer;
016import org.openstreetmap.josm.gui.progress.ProgressMonitor;
017import org.openstreetmap.josm.io.IllegalDataException;
018import org.openstreetmap.josm.io.session.SessionReader.ImportSupport;
019import org.w3c.dom.Element;
020import org.w3c.dom.Node;
021import org.w3c.dom.NodeList;
022
023/**
024 * Session importer for both TMSLayer and WMSLayer.
025 */
026public class ImagerySessionImporter implements SessionLayerImporter {
027
028    @Override
029    public Layer load(Element elem, ImportSupport support, ProgressMonitor progressMonitor) throws IOException, IllegalDataException {
030        String version = elem.getAttribute("version");
031        if (!"0.1".equals(version)) {
032            throw new IllegalDataException(tr("Version ''{0}'' of meta data for imagery layer is not supported. Expected: 0.1", version));
033        }
034        Map<String, String> attributes = new HashMap<>();
035
036        NodeList nodes = elem.getChildNodes();
037
038        for (int i = 0; i < nodes.getLength(); ++i) {
039            Node node = nodes.item(i);
040            if (node.getNodeType() == Node.ELEMENT_NODE) {
041                Element e = (Element) node;
042                attributes.put(e.getTagName(), e.getTextContent());
043            }
044        }
045        ImageryPreferenceEntry prefEntry = Preferences.deserializeStruct(attributes, ImageryPreferenceEntry.class);
046        ImageryInfo i = new ImageryInfo(prefEntry);
047        ImageryLayer layer = ImageryLayer.create(i);
048        if (layer instanceof AbstractTileSourceLayer) {
049            AbstractTileSourceLayer tsLayer = (AbstractTileSourceLayer) layer;
050            if (attributes.containsKey("automatic-downloading")) {
051                tsLayer.autoLoad = Boolean.parseBoolean(attributes.get("automatic-downloading"));
052            }
053
054            if (attributes.containsKey("automatically-change-resolution")) {
055                tsLayer.autoZoom = Boolean.parseBoolean(attributes.get("automatically-change-resolution"));
056            }
057
058            if (attributes.containsKey("show-errors")) {
059                tsLayer.showErrors = Boolean.parseBoolean(attributes.get("show-errors"));
060            }
061        }
062        if (attributes.containsKey("dx") && attributes.containsKey("dy")) {
063            layer.setOffset(Double.parseDouble(attributes.get("dx")), Double.parseDouble(attributes.get("dy")));
064        }
065        return layer;
066    }
067}