class BlockManager in Drupal 8

Manages discovery and instantiation of block plugins.

@todo Add documentation to this class.

Hierarchy

• class \Drupal\Component\Plugin\PluginManagerBase implements PluginManagerInterface uses DiscoveryTrait
  • class \Drupal\Core\Plugin\DefaultPluginManager implements CachedDiscoveryInterface, PluginManagerInterface, CacheableDependencyInterface uses DiscoveryCachedTrait, UseCacheBackendTrait
    • class \Drupal\Core\Block\BlockManager implements FallbackPluginManagerInterface, BlockManagerInterface uses CategorizingPluginManagerTrait, FilteredPluginManagerTrait

See also

\Drupal\Core\Block\BlockPluginInterface

1 file declares its use of BlockManager

BlockManagerTest.php in core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php

1 string reference to 'BlockManager'

core.services.yml in core/core.services.yml

core/core.services.yml

1 service uses BlockManager

plugin.manager.block in core/core.services.yml

Drupal\Core\Block\BlockManager

File

core/lib/Drupal/Core/Block/BlockManager.php, line 20

Namespace

Drupal\Core\Block

class BlockManager extends DefaultPluginManager implements BlockManagerInterface, FallbackPluginManagerInterface {
  use CategorizingPluginManagerTrait {
    getSortedDefinitions as traitGetSortedDefinitions;
  }
  use FilteredPluginManagerTrait;

  /**
   * The logger.
   *
   * @var \Psr\Log\LoggerInterface
   */
  protected $logger;

  /**
   * Constructs a new \Drupal\Core\Block\BlockManager object.
   *
   * @param \Traversable $namespaces
   *   An object that implements \Traversable which contains the root paths
   *   keyed by the corresponding namespace to look for plugin implementations.
   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
   *   Cache backend instance to use.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler to invoke the alter hook with.
   * @param \Psr\Log\LoggerInterface $logger
   *   The logger.
   */
  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler, LoggerInterface $logger) {
    parent::__construct('Plugin/Block', $namespaces, $module_handler, 'Drupal\\Core\\Block\\BlockPluginInterface', 'Drupal\\Core\\Block\\Annotation\\Block');
    $this
      ->alterInfo($this
      ->getType());
    $this
      ->setCacheBackend($cache_backend, 'block_plugins');
    $this->logger = $logger;
  }

  /**
   * {@inheritdoc}
   */
  protected function getType() {
    return 'block';
  }

  /**
   * {@inheritdoc}
   */
  public function processDefinition(&$definition, $plugin_id) {
    parent::processDefinition($definition, $plugin_id);
    $this
      ->processDefinitionCategory($definition);
  }

  /**
   * {@inheritdoc}
   */
  public function getSortedDefinitions(array $definitions = NULL) {

    // Sort the plugins first by category, then by admin label.
    $definitions = $this
      ->traitGetSortedDefinitions($definitions, 'admin_label');

    // Do not display the 'broken' plugin in the UI.
    unset($definitions['broken']);
    return $definitions;
  }

  /**
   * {@inheritdoc}
   */
  public function getFallbackPluginId($plugin_id, array $configuration = []) {
    return 'broken';
  }

  /**
   * {@inheritdoc}
   */
  protected function handlePluginNotFound($plugin_id, array $configuration) {
    $this->logger
      ->warning('The "%plugin_id" was not found', [
      '%plugin_id' => $plugin_id,
    ]);
    return parent::handlePluginNotFound($plugin_id, $configuration);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BlockManager::$logger	protected	property	The logger.
BlockManager::getFallbackPluginId	public	function	Gets a fallback id for a missing plugin. Overrides FallbackPluginManagerInterface::getFallbackPluginId
BlockManager::getSortedDefinitions	public	function	Gets sorted plugin definitions. Overrides CategorizingPluginManagerInterface::getSortedDefinitions
BlockManager::getType	protected	function	A string identifying the plugin type. Overrides FilteredPluginManagerTrait::getType
BlockManager::handlePluginNotFound	protected	function	Allows plugin managers to specify custom behavior if a plugin is not found. Overrides PluginManagerBase::handlePluginNotFound
BlockManager::processDefinition	public	function	Performs extra processing on plugin definitions. Overrides DefaultPluginManager::processDefinition
BlockManager::__construct	public	function	Constructs a new \Drupal\Core\Block\BlockManager object. Overrides DefaultPluginManager::__construct
CategorizingPluginManagerTrait::getCategories	public	function
CategorizingPluginManagerTrait::getGroupedDefinitions	public	function
CategorizingPluginManagerTrait::getModuleHandler	public	function	Returns the module handler used.
CategorizingPluginManagerTrait::getProviderName	protected	function	Gets the name of a provider.
CategorizingPluginManagerTrait::getSortedDefinitions	public	function	Aliased as: traitGetSortedDefinitions
CategorizingPluginManagerTrait::processDefinitionCategory	protected	function	Processes a plugin definition to ensure there is a category.
ContextAwarePluginManagerTrait::contextHandler	protected	function	Wraps the context handler.	1
ContextAwarePluginManagerTrait::getDefinitions	abstract public	function	See \Drupal\Component\Plugin\Discovery\DiscoveryInterface::getDefinitions().	1
ContextAwarePluginManagerTrait::getDefinitionsForContexts	public	function	See \Drupal\Core\Plugin\Context\ContextAwarePluginManagerInterface::getDefinitionsForContexts().
DefaultPluginManager::$additionalAnnotationNamespaces	protected	property	Additional namespaces the annotation discovery mechanism should scan for annotation definitions.
DefaultPluginManager::$alterHook	protected	property	Name of the alter hook if one should be invoked.
DefaultPluginManager::$cacheKey	protected	property	The cache key.
DefaultPluginManager::$cacheTags	protected	property	An array of cache tags to use for the cached definitions.
DefaultPluginManager::$defaults	protected	property	A set of defaults to be referenced by $this->processDefinition() if additional processing of plugins is necessary or helpful for development purposes.	9
DefaultPluginManager::$moduleHandler	protected	property	The module handler to invoke the alter hook.	1
DefaultPluginManager::$namespaces	protected	property	An object that implements \Traversable which contains the root paths keyed by the corresponding namespace to look for plugin implementations.
DefaultPluginManager::$pluginDefinitionAnnotationName	protected	property	The name of the annotation that contains the plugin definition.
DefaultPluginManager::$pluginInterface	protected	property	The interface each plugin should implement.	1
DefaultPluginManager::$subdir	protected	property	The subdirectory within a namespace to look for plugins, or FALSE if the plugins are in the top level of the namespace.
DefaultPluginManager::alterDefinitions	protected	function	Invokes the hook to alter the definitions if the alter hook is set.	1
DefaultPluginManager::alterInfo	protected	function	Sets the alter hook name.
DefaultPluginManager::clearCachedDefinitions	public	function	Clears static and persistent plugin definition caches. Overrides CachedDiscoveryInterface::clearCachedDefinitions	5
DefaultPluginManager::extractProviderFromDefinition	protected	function	Extracts the provider from a plugin definition.
DefaultPluginManager::findDefinitions	protected	function	Finds plugin definitions.	7
DefaultPluginManager::fixContextAwareDefinitions	private	function	Fix the definitions of context-aware plugins.
DefaultPluginManager::getCacheContexts	public	function	The cache contexts associated with this object. Overrides CacheableDependencyInterface::getCacheContexts
DefaultPluginManager::getCachedDefinitions	protected	function	Returns the cached plugin definitions of the decorated discovery class.
DefaultPluginManager::getCacheMaxAge	public	function	The maximum age for which this object may be cached. Overrides CacheableDependencyInterface::getCacheMaxAge
DefaultPluginManager::getCacheTags	public	function	The cache tags associated with this object. Overrides CacheableDependencyInterface::getCacheTags
DefaultPluginManager::getDiscovery	protected	function	Gets the plugin discovery. Overrides PluginManagerBase::getDiscovery	12
DefaultPluginManager::getFactory	protected	function	Gets the plugin factory. Overrides PluginManagerBase::getFactory
DefaultPluginManager::providerExists	protected	function	Determines if the provider of a definition exists.	3
DefaultPluginManager::setCacheBackend	public	function	Initialize the cache backend.
DefaultPluginManager::setCachedDefinitions	protected	function	Sets a cache of plugin definitions for the decorated discovery class.
DefaultPluginManager::useCaches	public	function	Disable the use of caches. Overrides CachedDiscoveryInterface::useCaches	1
DiscoveryCachedTrait::$definitions	protected	property	Cached definitions array.	1
DiscoveryCachedTrait::getDefinition	public	function	Overrides DiscoveryTrait::getDefinition	3
DiscoveryTrait::doGetDefinition	protected	function	Gets a specific plugin definition.
DiscoveryTrait::hasDefinition	public	function
FilteredPluginManagerTrait::getFilteredDefinitions	public	function	Implements \Drupal\Core\Plugin\FilteredPluginManagerInterface::getFilteredDefinitions().
FilteredPluginManagerTrait::moduleHandler	protected	function	Wraps the module handler.	1
FilteredPluginManagerTrait::themeManager	protected	function	Wraps the theme manager.	1
PluginManagerBase::$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::getInstance	public	function	Gets a preconfigured instance of a plugin. Overrides MapperInterface::getInstance	7
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.
UseCacheBackendTrait::$cacheBackend	protected	property	Cache backend instance.
UseCacheBackendTrait::$useCaches	protected	property	Flag whether caches should be used or skipped.
UseCacheBackendTrait::cacheGet	protected	function	Fetches from the cache backend, respecting the use caches flag.	1
UseCacheBackendTrait::cacheSet	protected	function	Stores data in the persistent cache, respecting the use caches flag.