class.ilDclFileFieldModel.php

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<?php

declare(strict_types=1);

class ilDclFileFieldModel extends ilDclBaseFieldModel
{
    public function allowFilterInListView(): bool
    {
        return false;
    }

    public function getValidFieldProperties(): array
    {
        return [ilDclBaseFieldModel::PROP_SUPPORTED_FILE_TYPES];
    }

    public function getSupportedExtensions(): array
    {
        if (!$this->hasProperty(ilDclBaseFieldModel::PROP_SUPPORTED_FILE_TYPES)) {
            return [];
        }

        $file_types = $this->getProperty(ilDclBaseFieldModel::PROP_SUPPORTED_FILE_TYPES);

        return $this->parseSupportedExtensions($file_types);
    }

    protected function parseSupportedExtensions(string $input_value): array
    {
        $supported_extensions = explode(",", $input_value);

        $trim_function = function ($value) {
            return trim(trim(strtolower($value)), ".");
        };

        return array_map($trim_function, $supported_extensions);
    }
}