source: josm/trunk/src/org/openstreetmap/josm/actions/UndoAction.java@ 1023

// 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.InputEvent;
import java.awt.event.KeyEvent;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.tools.ShortCut;

/**
 * Undoes the last command.
 *
 * @author imi
 */
public class UndoAction extends JosmAction {

        /**
         * Construct the action with "Undo" as label.
         */
        public UndoAction() {
                super(tr("Undo"), "undo", tr("Undo the last action."),
                ShortCut.registerShortCut("system:undo", tr("Edit: Undo"), KeyEvent.VK_Z, ShortCut.GROUP_MENU), true);
                setEnabled(false);
        }

        public void actionPerformed(ActionEvent e) {
                if (Main.map == null)
                        return;
                Main.map.repaint();
                Main.main.undoRedo.undo();
        }
}