source: josm/trunk/src/org/openstreetmap/josm/actions/HistoryInfoAction.java@ 1217

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

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

import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.Collection;
import java.util.LinkedList;

import javax.swing.JOptionPane;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.data.osm.Node;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.Way;
import org.openstreetmap.josm.data.osm.visitor.Visitor;
import org.openstreetmap.josm.tools.OpenBrowser;
import org.openstreetmap.josm.tools.Shortcut;

public class HistoryInfoAction extends JosmAction {

    public HistoryInfoAction() {
        super(tr("History of Node/Way"), "about",tr("Display history information about OSM ways or nodes."),
        Shortcut.registerShortcut("core:history", tr("History of Node/Way"), KeyEvent.VK_H, Shortcut.GROUP_HOTKEY), true);
    }

    public void actionPerformed(ActionEvent e) {
                final Collection<Object> sel = new LinkedList<Object>();
                new Visitor() {
                        public void visit(Node n) {
                                OpenBrowser.displayUrl("http://www.openstreetmap.org/browse/node/" + n.id + "/history");
                                sel.add(n);
                        }

                        public void visit(Way w) {
                                OpenBrowser.displayUrl("http://www.openstreetmap.org/browse/way/" + w.id + "/history");
                                sel.add(w);
                        }

                        public void visit(Relation e) {
                                OpenBrowser.displayUrl("http://www.openstreetmap.org/browse/relation/" + e.id + "/history");
                                sel.add(e);
                        }

                        public void visitAll() {
                                for (OsmPrimitive osm : Main.ds.getSelected())
                                        osm.visit(this);
                        }
                }.visitAll();

                if (sel.isEmpty()) {
                                        JOptionPane.showMessageDialog(Main.parent,
                                                        tr("Please select at least one node or way."));
                                        return;
                }
    }

}