source: osm/applications/editors/josm/plugins/reltoolbox/src/relcontext/actions/DuplicateChosenRelationAction.java

// License: GPL. For details, see LICENSE file.
package relcontext.actions;

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

import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;

import org.openstreetmap.josm.command.AddCommand;
import org.openstreetmap.josm.data.UndoRedoHandler;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.gui.MainApplication;
import org.openstreetmap.josm.tools.ImageProvider;

import relcontext.ChosenRelation;
import relcontext.ChosenRelationListener;

public class DuplicateChosenRelationAction extends AbstractAction implements ChosenRelationListener {
    private final ChosenRelation rel;

    public DuplicateChosenRelationAction(ChosenRelation rel) {
        super(tr("Duplicate relation"));
        putValue(SMALL_ICON, ImageProvider.get("duplicate"));
        putValue(SHORT_DESCRIPTION, tr("Create a copy of this relation and open it in another editor window"));
        this.rel = rel;
        rel.addChosenRelationListener(this);
        setEnabled(rel.get() != null);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        DataSet ds = MainApplication.getLayerManager().getEditDataSet();
        if (ds != null) {
            Relation r = rel.get();
            Relation copy = new Relation(r, true);
            UndoRedoHandler.getInstance().add(new AddCommand(ds, copy));
            rel.set(copy);
            ds.setSelected(copy);
        }
    }

    @Override
    public void chosenRelationChanged(Relation oldRelation, Relation newRelation) {
        setEnabled(newRelation != null);
    }
}