FileInput::__construct

public function __construct($params = array())
{
	global $USER;
	$inputs = array_merge($this->elementSetts, $params);
	$this->elementSetts = array(
		"name" => $inputs["name"],
		"description" => !empty($inputs["description"]),
		"delete" => $inputs['delete'] !== false,
		"edit" => $inputs['edit'] !== false,
		"thumbSize" => 640,
		//"properties" => (is_array($inputs) ? $inputs : array()) //TODO It is needed to deal with additional properties
	);
	if (isset($params['id']))
		$this->elementSetts['id'] = $params['id'];
	$replace = array(
		"/\#MESS_LOADING\#/" => Loc::getMessage("BXU_LoadingProcess"),
		"/\#description\#/" => ($this->elementSetts["edit"] == true && $this->elementSetts["description"] == true ? self::$templatePatterns["description"] : ""),
		"/\#properties\#/" => "",
		"/[nt]+/" => ""
	);
	$this->templates["uploaded"] = preg_replace(array_keys($replace), array_values($replace), self::$templatePatterns["uploaded"]);
	$this->templates["unexisted"] = preg_replace(array_keys($replace), array_values($replace), self::$templatePatterns["unexisted"]);
	$this->templates["new"] = preg_replace(array_keys($replace), array_values($replace), self::$templatePatterns["new"]);
	$this->templates["unsaved"] = preg_replace(array_keys($replace), array_values($replace), self::$templatePatterns["unsaved"]);
	$replace = array(
		"#input_name#" => $inputs["name"],
		"#input_value#" => "",
		"#description_name#" => self::getInputName($inputs["name"], "_descr")
	);
	$this->templates["new"] = str_replace(array_keys($replace), array_values($replace), $this->templates["new"]);

	$this->templates["unsavedArray"] = str_replace("#input#", self::$templatePatterns["arrayInput"], $this->templates["unsaved"]);
	$this->templates["unsaved"] = str_replace("#input#", self::$templatePatterns["regularInput"], $this->templates["unsaved"]);

	$inputs = array_merge($this->uploadSetts, $params);

	$this->uploadSetts = array(
		"upload" => '',
		"uploadType" => "path",
		"medialib" =>
			isset($inputs['medialib'])
			&& $inputs['medialib'] === true
			&& COption::GetOptionString('fileman', "use_medialib", "Y") != "N"
		,
		"fileDialog" =>
			(isset($inputs['file_dialog']) && $inputs['file_dialog'] === true)
			|| (isset($inputs['fileDialog']) && $inputs['fileDialog'] === true)
		,
		"cloud" =>
			isset($inputs['cloud'])
			&& $inputs['cloud'] === true
			&& $USER->CanDoOperation("clouds_browse")
			&& CModule::IncludeModule("clouds")
			&& CCloudStorage::HasActiveBuckets()
		,
		"maxCount" => isset($params["maxCount"]) && $params["maxCount"] > 0 ? $params["maxCount"] : 0,
		"maxSize" => isset($params["maxSize"]) && $params["maxSize"] > 0 ? $params["maxSize"] : 0,
		"allowUpload" => $params["allowUpload"] ?? self::UPLOAD_ANY_FILES,
		"allowUploadExt" => trim($params["allowUploadExt"] ?? ''),
		"allowSort" => isset($params["allowSort"]) && $params["allowSort"] === "N" ? "N" : "Y",
	);
	if (!in_array(
		$this->uploadSetts["allowUpload"],
		[
			self::UPLOAD_ANY_FILES,
			self::UPLOAD_IMAGES,
			self::UPLOAD_EXTENTION_LIST,
		]
	))
	{
		$this->uploadSetts["allowUpload"] = self::UPLOAD_ANY_FILES;
	}
	if ($this->uploadSetts["medialib"] === true)
		$this->uploadSetts["medialib"] = (BitrixMainLoader::includeModule("fileman") && CMedialib::CanDoOperation('medialib_view_collection', 0));
	if($this->uploadSetts["fileDialog"] === true && !$USER->CanDoOperation('fileman_view_file_structure'))
		$this->uploadSetts["fileDialog"] = false;

	if (empty($this->uploadSetts["allowUploadExt"]) && $this->uploadSetts["allowUpload"] === self::UPLOAD_EXTENTION_LIST)
		$this->uploadSetts["allowUpload"] = self::UPLOAD_ANY_FILES;
	if (isset($this->elementSetts["id"]))
		$this->id = 'bx_file_'.mb_strtolower(preg_replace("/[^a-z0-9]/i", "_", $this->elementSetts["id"]));
	else
		$this->id = 'bx_file_'.mb_strtolower(preg_replace("/[^a-z0-9]/i", "_", $this->elementSetts["name"]));

	if ($inputs['upload'] === true)
	{
		$this->uploadSetts['upload'] = FileInputReceiver::sign(array(
			"id" => ($inputs['uploadType'] === "hash" ? "hash" : "path"),
			"allowUpload" => $this->uploadSetts["allowUpload"],
			"allowUploadExt" => $this->uploadSetts["allowUploadExt"]
		));
		$this->uploadSetts['uploadType'] = (in_array($inputs["uploadType"], array(/*"file",*/ "hash", "path")) ? $inputs["uploadType"] : "path");
	}
	self::$instance = $this;
}