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.layer.TMSLayer;
017import org.openstreetmap.josm.gui.layer.WMSLayer;
018import org.openstreetmap.josm.gui.layer.WMTSLayer;
019import org.openstreetmap.josm.gui.progress.ProgressMonitor;
020import org.openstreetmap.josm.io.IllegalDataException;
021import org.openstreetmap.josm.io.session.SessionReader.ImportSupport;
022import org.w3c.dom.Element;
023import org.w3c.dom.Node;
024import org.w3c.dom.NodeList;
025
026/**
027 * Session importer for {@link TMSLayer}, {@link WMSLayer} and {@link WMTSLayer}.
028 * @since 5391
029 */
030public class ImagerySessionImporter implements SessionLayerImporter {
031
032    @Override
033    public Layer load(Element elem, ImportSupport support, ProgressMonitor progressMonitor) throws IOException, IllegalDataException {
034        String version = elem.getAttribute("version");
035        if (!"0.1".equals(version)) {
036            throw new IllegalDataException(tr("Version ''{0}'' of meta data for imagery layer is not supported. Expected: 0.1", version));
037        }
038        Map<String, String> attributes = new HashMap<>();
039
040        NodeList nodes = elem.getChildNodes();
041
042        for (int i = 0; i < nodes.getLength(); ++i) {
043            Node node = nodes.item(i);
044            if (node.getNodeType() == Node.ELEMENT_NODE) {
045                Element e = (Element) node;
046                attributes.put(e.getTagName(), e.getTextContent());
047            }
048        }
049        ImageryPreferenceEntry prefEntry = Preferences.deserializeStruct(attributes, ImageryPreferenceEntry.class);
050        ImageryInfo i = new ImageryInfo(prefEntry);
051        ImageryLayer layer = ImageryLayer.create(i);
052        if (layer instanceof AbstractTileSourceLayer) {
053            AbstractTileSourceLayer<?> tsLayer = (AbstractTileSourceLayer<?>) layer;
054            tsLayer.getDisplaySettings().loadFrom(attributes);
055        }
056        return layer;
057    }
058}