001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.io.importexport;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.io.File;
007import java.io.FileNotFoundException;
008import java.io.IOException;
009import java.io.InputStream;
010
011import javax.swing.JOptionPane;
012
013import org.openstreetmap.josm.Main;
014import org.openstreetmap.josm.actions.ExtensionFileFilter;
015import org.openstreetmap.josm.data.osm.DataSet;
016import org.openstreetmap.josm.gui.MainApplication;
017import org.openstreetmap.josm.gui.layer.OsmDataLayer;
018import org.openstreetmap.josm.gui.progress.ProgressMonitor;
019import org.openstreetmap.josm.gui.util.GuiHelper;
020import org.openstreetmap.josm.io.Compression;
021import org.openstreetmap.josm.io.IllegalDataException;
022import org.openstreetmap.josm.io.OsmChangeReader;
023import org.openstreetmap.josm.tools.Logging;
024
025/**
026 * File importer that reads OSM change files (*.osc).
027 * @see <a href="http://wiki.openstreetmap.org/wiki/OsmChange">OsmChange</a>
028 */
029public class OsmChangeImporter extends FileImporter {
030
031    public static final ExtensionFileFilter FILE_FILTER = ExtensionFileFilter.newFilterWithArchiveExtensions(
032            "osc", "osc", tr("OsmChange File"), true);
033
034    /**
035     * Constructs a new {@code OsmChangeImporter}.
036     */
037    public OsmChangeImporter() {
038        super(FILE_FILTER);
039    }
040
041    public OsmChangeImporter(ExtensionFileFilter filter) {
042        super(filter);
043    }
044
045    @Override
046    public void importData(File file, ProgressMonitor progressMonitor) throws IOException, IllegalDataException {
047        try {
048            importData(Compression.getUncompressedFileInputStream(file), file, progressMonitor);
049        } catch (FileNotFoundException e) {
050            Logging.error(e);
051            throw new IOException(tr("File ''{0}'' does not exist.", file.getName()), e);
052        }
053    }
054
055    protected void importData(InputStream in, final File associatedFile, ProgressMonitor progressMonitor) throws IllegalDataException {
056        final DataSet dataSet = OsmChangeReader.parseDataSet(in, progressMonitor);
057        final OsmDataLayer layer = new OsmDataLayer(dataSet, associatedFile.getName(), associatedFile);
058        addDataLayer(dataSet, layer, associatedFile.getPath());
059    }
060
061    protected void addDataLayer(final DataSet dataSet, final OsmDataLayer layer, final String filePath) {
062        // FIXME: remove UI stuff from IO subsystem
063        //
064        GuiHelper.runInEDT(() -> {
065            if (dataSet.allPrimitives().isEmpty()) {
066                JOptionPane.showMessageDialog(
067                        Main.parent,
068                        tr("No data found in file {0}.", filePath),
069                        tr("Open OsmChange file"),
070                        JOptionPane.INFORMATION_MESSAGE);
071            }
072            MainApplication.getLayerManager().addLayer(layer);
073            layer.onPostLoadFromFile();
074        });
075    }
076}