<?php
/**
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2020 (original work) Open Assessment Technologies SA;
 */

declare(strict_types = 1);

namespace oat\oatbox\reporting;

use RecursiveIterator;
use ArrayIterator;

/**
 * Custom RecursiveIterator for reports.
 *
 * @author Gyula Szucs, <gyula@taotesting.com>
 */
class RecursiveReportIterator extends ArrayIterator implements RecursiveIterator
{
    /**
     * @return bool
     */
    public function hasChildren(): bool
    {
        return $this->current()->hasChildren();
    }

    /**
     * @return self|RecursiveIterator
     */
    public function getChildren()
    {
        return new static($this->current()->getChildren());
    }
}