source: osm/applications/editors/josm/plugins/waypoints/src/WaypointOpenAction.java@ 9949

package waypoints; 

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

import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Collection;
import java.util.LinkedList;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

import javax.xml.parsers.ParserConfigurationException;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.actions.DiskAccessAction;
import org.xml.sax.SAXException;

/**
 * Based on standard JOSM OpenAction 
 * For opening a waypoint file to convert to nodes.
 */
public class WaypointOpenAction extends DiskAccessAction {
        
        /**
         * Create an open action. The name is "Open a file".
         */
        public WaypointOpenAction() {
                super(tr("Open waypoints file"), "open", tr("Open a waypoints file."), 
                                                KeyEvent.VK_W, InputEvent.CTRL_DOWN_MASK);
        }

        public void actionPerformed(ActionEvent e) {
                JFileChooser fc = createAndOpenFileChooser(true, true, null);
                if (fc == null)
                        return;
                File[] files = fc.getSelectedFiles();
                for (int i = files.length; i > 0; --i)
                        openFile(files[i-1]);
        }

        /**
         * Open the given file.
         */
        public void openFile(File file) {
                String fn = file.getName();
                try {
                                DataSet dataSet = 
                                                WaypointReader.parse(new FileInputStream(file));
                                Main.main.addLayer(new OsmDataLayer(dataSet, file.getName(), 
                                                                                file));
                } catch (SAXException x) {
                        x.printStackTrace();
                        JOptionPane.showMessageDialog(Main.parent, 
                                        tr("Error while parsing {0}",fn)+": "+x.getMessage());
                } catch (ParserConfigurationException x) {
                        x.printStackTrace(); // broken SAXException chaining
                        JOptionPane.showMessageDialog(Main.parent, 
                                        tr("Error while parsing {0}",fn)+": "+x.getMessage());
                } catch (IOException x) {
                        x.printStackTrace();
                        JOptionPane.showMessageDialog(Main.parent, 
                                        tr("Could not read \"{0}\"",fn)+"\n"+x.getMessage());
                }
        }
}