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.ImageryLayer;
014import org.openstreetmap.josm.gui.layer.Layer;
015import org.openstreetmap.josm.gui.progress.ProgressMonitor;
016import org.openstreetmap.josm.io.IllegalDataException;
017import org.openstreetmap.josm.io.session.SessionReader.ImportSupport;
018import org.w3c.dom.Element;
019import org.w3c.dom.Node;
020import org.w3c.dom.NodeList;
021
022/**
023 * Session importer for both TMSLayer and WMSLayer.
024 */
025public class ImagerySessionImporter implements SessionLayerImporter {
026
027    @Override
028    public Layer load(Element elem, ImportSupport support, ProgressMonitor progressMonitor) throws IOException, IllegalDataException {
029        String version = elem.getAttribute("version");
030        if (!"0.1".equals(version)) {
031            throw new IllegalDataException(tr("Version ''{0}'' of meta data for imagery layer is not supported. Expected: 0.1", version));
032        }
033        Map<String, String> attributes = new HashMap<>();
034
035        NodeList nodes = elem.getChildNodes();
036
037        for (int i=0; i<nodes.getLength(); ++i) {
038            Node node = nodes.item(i);
039            if (node.getNodeType() == Node.ELEMENT_NODE) {
040                Element e = (Element) node;
041                attributes.put(e.getTagName(), e.getTextContent());
042            }
043        }
044        ImageryPreferenceEntry prefEntry = Preferences.deserializeStruct(attributes, ImageryPreferenceEntry.class);
045        ImageryInfo i = new ImageryInfo(prefEntry);
046        return ImageryLayer.create(i);
047    }
048}