source: osm/applications/editors/josm/plugins/reltoolbox/src/relcontext/actions/DeleteChosenRelationAction.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 java.util.Collections;

import javax.swing.AbstractAction;

import org.openstreetmap.josm.command.Command;
import org.openstreetmap.josm.command.DeleteCommand;
import org.openstreetmap.josm.data.UndoRedoHandler;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.tools.ImageProvider;

import relcontext.ChosenRelation;
import relcontext.ChosenRelationListener;

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

    public DeleteChosenRelationAction(ChosenRelation rel) {
        super(tr("Delete relation"));
        putValue(SMALL_ICON, ImageProvider.get("dialogs", "delete"));
        this.rel = rel;
        rel.addChosenRelationListener(this);
        setEnabled(rel.get() != null);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        Relation r = rel.get();
        rel.clear();
        Command c = DeleteCommand.delete(Collections.singleton(r), true, true);
        if (c != null) {
            UndoRedoHandler.getInstance().add(c);
        }
    }

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