LangValidator.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Repository\Validation\Data;

use ILIAS\MetaData\Elements\ElementInterface;
use ILIAS\MetaData\DataHelper\DataHelperInterface;

class LangValidator implements DataValidatorInterface
{
    use DataFetcher;

    protected DataHelperInterface $data_helper;

    public function __construct(
        DataHelperInterface $data_helper
    ) {
        $this->data_helper = $data_helper;
    }

    public function isValid(
        ElementInterface $element,
        bool $ignore_marker
    ): bool {
        return in_array(
            $this->dataValue($element, $ignore_marker),
            iterator_to_array($this->data_helper->getAllLanguages())
        );
    }
}