source: josm/trunk/src/org/openstreetmap/josm/actions/AddNodeAction.java@ 4191

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

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

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

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.command.AddCommand;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.data.osm.Node;
import org.openstreetmap.josm.gui.dialogs.LatLonDialog;
import org.openstreetmap.josm.tools.Shortcut;

/**
 * This action displays a dialog where the user can enter a latitude and longitude,
 * and when ok is pressed, a new node is created at the specified position.
 */
public final class AddNodeAction extends JosmAction {
    // remember input from last time
    private String text;

    public AddNodeAction() {
        super(tr("Add Node..."), "addnode", tr("Add a node by entering latitude and longitude."),
                Shortcut.registerShortcut("addnode", tr("Edit: {0}", tr("Add Node...")), KeyEvent.VK_D, Shortcut.GROUP_EDIT,
                        Shortcut.SHIFT_DEFAULT), true);
        putValue("help", ht("/Action/AddNode"));
    }

    public void actionPerformed(ActionEvent e) {
        if (!isEnabled())
            return;

        LatLonDialog dialog = new LatLonDialog(Main.parent, tr("Add Node..."), ht("/Action/AddNode"));

        if (text != null) {
            dialog.setText(text);
        }

        dialog.setVisible(true);
        if (dialog.isCanceled())
            return;

        LatLon coordinates = dialog.getCoordinates();
        if (coordinates == null)
            return;

        text = dialog.getText();

        Node nnew = new Node(coordinates);

        // add the node
        Main.main.undoRedo.add(new AddCommand(nnew));
        getCurrentDataSet().setSelected(nnew);
        Main.map.mapView.repaint();
    }

    @Override
    protected void updateEnabledState() {
        setEnabled(getEditLayer() != null);
    }
}