source: josm/trunk/src/org/openstreetmap/josm/command/AddCommand.java@ 1826

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

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

import java.util.Collection;

import javax.swing.JLabel;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.MutableTreeNode;

import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
import org.openstreetmap.josm.gui.PrimitiveNameFormatter;
import org.openstreetmap.josm.tools.ImageProvider;

/**
 * A command that adds an osm primitive to a dataset. Keys cannot be added this
 * way.
 *
 * See {@see ChangeCommand} for comments on relation back references.
 *
 * @author imi
 */
public class AddCommand extends Command {

    /**
     * The primitive to add to the dataset.
     */
    private final OsmPrimitive osm;

    /**
     * Create the command and specify the element to add.
     */
    public AddCommand(OsmPrimitive osm) {
        super();
        this.osm = osm;
    }

    @Override public boolean executeCommand() {
        getLayer().data.addPrimitive(osm);
        return true;
    }

    @Override public void undoCommand() {
        getLayer().data.removePrimitive(osm);
    }

    @Override public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted, Collection<OsmPrimitive> added) {
        added.add(osm);
    }

    @Override public MutableTreeNode description() {
        return new DefaultMutableTreeNode(
                new JLabel(
                        tr("Add {0} {1}",
                                OsmPrimitiveType.from(osm).getLocalizedDisplayNameSingular(),
                                new PrimitiveNameFormatter().getName(osm)
                        ),
                        ImageProvider.get(OsmPrimitiveType.from(osm)),
                        JLabel.HORIZONTAL
                )
        );
    }
}