source: josm/trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java@ 459

// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.actions.downloadtasks;

import static org.openstreetmap.josm.tools.I18n.tr;

import java.io.IOException;

import javax.swing.JCheckBox;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.DownloadAction;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.gui.PleaseWaitRunnable;
import org.openstreetmap.josm.gui.download.DownloadDialog.DownloadTask;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.io.BoundingBoxDownloader;
import org.xml.sax.SAXException;

/**
 * Open the download dialog and download the data.
 * Run in the worker thread.
 */
public class DownloadOsmTask implements DownloadTask {

        private static class Task extends PleaseWaitRunnable {
                private BoundingBoxDownloader reader;
                private DataSet dataSet;
                private boolean newLayer;

                public Task(boolean newLayer, BoundingBoxDownloader reader) {
                        super(tr("Downloading data"));
                        this.reader = reader;
                        this.newLayer = newLayer;
                }

                @Override public void realRun() throws IOException, SAXException {
                        dataSet = reader.parseOsm();
                }

                @Override protected void finish() {
                        if (dataSet == null)
                                return; // user cancelled download or error occoured
                        if (dataSet.allPrimitives().isEmpty())
                                errorMessage = tr("No data imported.");
                        OsmDataLayer layer = new OsmDataLayer(dataSet, tr("Data Layer"), null);
                        if (newLayer)
                                Main.main.addLayer(layer);
                        else
                                Main.main.editLayer().mergeFrom(layer);
                }

                @Override protected void cancel() {
                        if (reader != null)
                                reader.cancel();
                }
        }
        private JCheckBox checkBox = new JCheckBox(tr("OpenStreetMap data"), true);

        public void download(DownloadAction action, double minlat, double minlon, double maxlat, double maxlon) {
                Task task = new Task(action.dialog.newLayer.isSelected(), new BoundingBoxDownloader(minlat, minlon, maxlat, maxlon));
                Main.worker.execute(task);
    }

        public JCheckBox getCheckBox() {
            return checkBox;
    }

        public String getPreferencesSuffix() {
            return "osm";
    }
}