class.ilFrameTargetInfo.php

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<?php

declare(strict_types=1);

class ilFrameTargetInfo
{
    public static function _getFrame(string $a_class): string
    {
        switch ($a_class) {
            case 'RepositoryContent':
            case 'MainContent':
                return self::getLtiFrame();

            case 'ExternalContent':
                return '_blank';

            default:
                return '';
        }
    }

    protected static function getLtiFrame(): string
    {
        global $DIC;

        if ($DIC->offsetExists('lti') && $DIC['lti']->isActive()) {
            return '_self';
        }

        return '_top';
    }
}