Method __construct

/**
 * Constructor.
 *
 * @param   array                $config   An optional associative array of configuration settings.
 *                                         Recognized key values include 'name', 'default_task', 'model_path', and
 *                                         'view_path' (this list is not meant to be comprehensive).
 * @param   MVCFactoryInterface  $factory  The factory.
 * @param   CMSApplication       $app      The Application for the dispatcher
 * @param   Input                $input    Input
 *
 * @since   3.0
 */
public function __construct($config = array(), MVCFactoryInterface $factory = null, ?CMSApplication $app = null, ?Input $input = null)
{
    $this->methods = array();
    $this->message = null;
    $this->messageType = 'message';
    $this->paths = array();
    $this->redirect = null;
    $this->taskMap = array();
    $this->app = $app ?: Factory::getApplication();
    $this->input = $input ?: $this->app->input;
    if (\defined('JDEBUG') && JDEBUG) {
        Log::addLogger(array('text_file' => 'jcontroller.log.php'), Log::ALL, array('controller'));
    }
    // Determine the methods to exclude from the base class.
    $xMethods = get_class_methods('\\Joomla\\CMS\\MVC\\Controller\\BaseController');
    // Get the public methods in this class using reflection.
    $r = new \ReflectionClass($this);
    $rMethods = $r->getMethods(\ReflectionMethod::IS_PUBLIC);
    foreach ($rMethods as $rMethod) {
        $mName = $rMethod->getName();
        // Add default display method if not explicitly declared.
        if ($mName === 'display' || !\in_array($mName, $xMethods)) {
            $this->methods[] = strtolower($mName);
            // Auto register the methods as tasks.
            $this->taskMap[strtolower($mName)] = $mName;
        }
    }
    // Set the view name
    if (empty($this->name)) {
        if (\array_key_exists('name', $config)) {
            $this->name = $config['name'];
        } else {
            $this->name = $this->getName();
        }
    }
    // Set a base path for use by the controller
    if (\array_key_exists('base_path', $config)) {
        $this->basePath = $config['base_path'];
    } else {
        $this->basePath = JPATH_COMPONENT;
    }
    // If the default task is set, register it as such
    if (\array_key_exists('default_task', $config)) {
        $this->registerDefaultTask($config['default_task']);
    } else {
        $this->registerDefaultTask('display');
    }
    // Set the models prefix
    if (empty($this->model_prefix)) {
        if (\array_key_exists('model_prefix', $config)) {
            // User-defined prefix
            $this->model_prefix = $config['model_prefix'];
        } else {
            $this->model_prefix = ucfirst($this->name) . 'Model';
        }
    }
    // Set the default model search path
    if (\array_key_exists('model_path', $config)) {
        // User-defined dirs
        $this->addModelPath($config['model_path'], $this->model_prefix);
    } else {
        $this->addModelPath($this->basePath . '/models', $this->model_prefix);
    }
    // Set the default view search path
    if (\array_key_exists('view_path', $config)) {
        // User-defined dirs
        $this->setPath('view', $config['view_path']);
    } else {
        $this->setPath('view', $this->basePath . '/views');
    }
    // Set the default view.
    if (\array_key_exists('default_view', $config)) {
        $this->default_view = $config['default_view'];
    } elseif (empty($this->default_view)) {
        $this->default_view = $this->getName();
    }
    $this->factory = $factory ?: new LegacyFactory();
}