public static function DefaultFactory::getPluginClass

Finds the class relevant for a given plugin.

Parameters

string $plugin_id: The id of a plugin.

\Drupal\Component\Plugin\Definition\PluginDefinitionInterface|mixed[] $plugin_definition: The plugin definition associated with the plugin ID.

string $required_interface: (optional) The required plugin interface.

Return value

string The appropriate class name.

Throws

\Drupal\Component\Plugin\Exception\PluginException Thrown when there is no class specified, the class doesn't exist, or the class does not implement the specified required interface.

File

core/lib/Drupal/Component/Plugin/Factory/DefaultFactory.php, line 75

Class

DefaultFactory

Default plugin factory.

Namespace

Code

public static function getPluginClass($plugin_id, $plugin_definition = NULL, $required_interface = NULL) {
  $missing_class_message = sprintf('The plugin (%s) did not specify an instance class.', $plugin_id);
  if (is_array($plugin_definition)) {
    if (empty($plugin_definition['class'])) {
      throw new PluginException($missing_class_message);
    }
    $class = $plugin_definition['class'];
  }
  elseif ($plugin_definition instanceof PluginDefinitionInterface) {
    if (!$plugin_definition
      ->getClass()) {
      throw new PluginException($missing_class_message);
    }
    $class = $plugin_definition
      ->getClass();
  }
  else {
    $plugin_definition_type = is_object($plugin_definition) ? get_class($plugin_definition) : gettype($plugin_definition);
    throw new PluginException(sprintf('%s can only handle plugin definitions that are arrays or that implement %s, but %s given.', __CLASS__, PluginDefinitionInterface::class, $plugin_definition_type));
  }
  if (!class_exists($class)) {
    throw new PluginException(sprintf('Plugin (%s) instance class "%s" does not exist.', $plugin_id, $class));
  }
  if ($required_interface && !is_subclass_of($class, $required_interface)) {
    throw new PluginException(sprintf('Plugin "%s" (%s) must implement interface %s.', $plugin_id, $class, $required_interface));
  }
  return $class;
}