abstract class PluginManagerBase in Drupal 8

Base class for plugin managers.

Hierarchy

• class \Drupal\Component\Plugin\PluginManagerBase implements PluginManagerInterface uses DiscoveryTrait

10 files declare their use of PluginManagerBase

DefaultPluginManager.php in core/lib/Drupal/Core/Plugin/DefaultPluginManager.php

EntityDisplayFormBase.php in core/modules/field_ui/src/Form/EntityDisplayFormBase.php

FieldLayoutEntityFormDisplayEditForm.php in core/modules/field_layout/src/Form/FieldLayoutEntityFormDisplayEditForm.php

FieldLayoutEntityViewDisplayEditForm.php in core/modules/field_layout/src/Form/FieldLayoutEntityViewDisplayEditForm.php

FilteredPluginManagerTraitTest.php in core/tests/Drupal/Tests/Core/Plugin/FilteredPluginManagerTraitTest.php

... See full list

File

core/lib/Drupal/Component/Plugin/PluginManagerBase.php, line 11

Namespace

Drupal\Component\Plugin

abstract class PluginManagerBase implements PluginManagerInterface {
  use DiscoveryTrait;

  /**
   * The object that discovers plugins managed by this manager.
   *
   * @var \Drupal\Component\Plugin\Discovery\DiscoveryInterface
   */
  protected $discovery;

  /**
   * The object that instantiates plugins managed by this manager.
   *
   * @var \Drupal\Component\Plugin\Factory\FactoryInterface
   */
  protected $factory;

  /**
   * The object that returns the preconfigured plugin instance appropriate for a particular runtime condition.
   *
   * @var \Drupal\Component\Plugin\Mapper\MapperInterface|null
   */
  protected $mapper;

  /**
   * Gets the plugin discovery.
   *
   * @return \Drupal\Component\Plugin\Discovery\DiscoveryInterface
   */
  protected function getDiscovery() {
    return $this->discovery;
  }

  /**
   * Gets the plugin factory.
   *
   * @return \Drupal\Component\Plugin\Factory\FactoryInterface
   */
  protected function getFactory() {
    return $this->factory;
  }

  /**
   * {@inheritdoc}
   */
  public function getDefinition($plugin_id, $exception_on_invalid = TRUE) {
    return $this
      ->getDiscovery()
      ->getDefinition($plugin_id, $exception_on_invalid);
  }

  /**
   * {@inheritdoc}
   */
  public function getDefinitions() {
    return $this
      ->getDiscovery()
      ->getDefinitions();
  }

  /**
   * {@inheritdoc}
   */
  public function createInstance($plugin_id, array $configuration = []) {

    // If this PluginManager has fallback capabilities catch
    // PluginNotFoundExceptions.
    if ($this instanceof FallbackPluginManagerInterface) {
      try {
        return $this
          ->getFactory()
          ->createInstance($plugin_id, $configuration);
      } catch (PluginNotFoundException $e) {
        return $this
          ->handlePluginNotFound($plugin_id, $configuration);
      }
    }
    else {
      return $this
        ->getFactory()
        ->createInstance($plugin_id, $configuration);
    }
  }

  /**
   * Allows plugin managers to specify custom behavior if a plugin is not found.
   *
   * @param string $plugin_id
   *   The ID of the missing requested plugin.
   * @param array $configuration
   *   An array of configuration relevant to the plugin instance.
   *
   * @return object
   *   A fallback plugin instance.
   */
  protected function handlePluginNotFound($plugin_id, array $configuration) {
    $fallback_id = $this
      ->getFallbackPluginId($plugin_id, $configuration);
    return $this
      ->getFactory()
      ->createInstance($fallback_id, $configuration);
  }

  /**
   * {@inheritdoc}
   */
  public function getInstance(array $options) {
    if (!$this->mapper) {
      throw new \BadMethodCallException(sprintf('%s does not support this method unless %s::$mapper is set.', static::class, static::class));
    }
    return $this->mapper
      ->getInstance($options);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DiscoveryTrait::doGetDefinition	protected	function	Gets a specific plugin definition.
DiscoveryTrait::hasDefinition	public	function
PluginManagerBase::$discovery	protected	property	The object that discovers plugins managed by this manager.
PluginManagerBase::$factory	protected	property	The object that instantiates plugins managed by this manager.
PluginManagerBase::$mapper	protected	property	The object that returns the preconfigured plugin instance appropriate for a particular runtime condition.
PluginManagerBase::createInstance	public	function	Creates a pre-configured instance of a plugin. Overrides FactoryInterface::createInstance	12
PluginManagerBase::getDefinition	public	function	Gets a specific plugin definition. Overrides DiscoveryTrait::getDefinition
PluginManagerBase::getDefinitions	public	function	Gets the definition of all plugins for this type. Overrides DiscoveryTrait::getDefinitions
PluginManagerBase::getDiscovery	protected	function	Gets the plugin discovery.	1
PluginManagerBase::getFactory	protected	function	Gets the plugin factory.	1
PluginManagerBase::getInstance	public	function	Gets a preconfigured instance of a plugin. Overrides MapperInterface::getInstance	7
PluginManagerBase::handlePluginNotFound	protected	function	Allows plugin managers to specify custom behavior if a plugin is not found.	1