skeeks\cms\widgets\StorageFileManager::_getSourceSimpleUploadOptions PHP Method

    protected function _getSourceSimpleUploadOptions()
    {
        //Опции которые перетирать нельзя
        $options = ["url" => $this->backendSimpleUploadUrl, "name" => "imgfile", "hoverClass" => 'btn-hover', "focusClass" => 'active', "disabledClass" => 'disabled', "responseType" => 'json', "multiple" => true];
        return $options;
    }