source: josm/trunk/src/org/openstreetmap/josm/actions/HistoryInfoAction.java @ 5241

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

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

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.gui.history.HistoryBrowserDialogManager;
import org.openstreetmap.josm.tools.Shortcut;

import static org.openstreetmap.josm.tools.I18n.tr;
import static org.openstreetmap.josm.gui.help.HelpUtil.ht;

public class HistoryInfoAction extends JosmAction {

        public HistoryInfoAction() {
                super(tr("History"), "about",
                                tr("Display history information about OSM ways, nodes, or relations."),
                                Shortcut.registerShortcut("core:historyinfo",
                                tr("History"), KeyEvent.VK_H, Shortcut.CTRL), false);
                putValue("help", ht("/Action/ObjectHistory"));
                putValue("toolbar", "action/historyinfo");
                Main.toolbar.register(this);
        }

        @Override
        public void actionPerformed(ActionEvent ae) {
                DataSet set = getCurrentDataSet();
                if (set != null) {
                        HistoryBrowserDialogManager.getInstance().showHistory(set.getSelected());
                }
        }

        @Override
        public void updateEnabledState() {
                if (getCurrentDataSet() == null) {
                        setEnabled(false);
                } else {
                        updateEnabledState(getCurrentDataSet().getSelected());
                }
        }

        @Override
        protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
                setEnabled(!selection.isEmpty());
        }
}