abstract class ContextAwarePluginBase in Drupal 8

Base class for plugins that are context aware.

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Component\Plugin\ContextAwarePluginBase implements ContextAwarePluginInterface
    • class \Drupal\Core\Plugin\ContextAwarePluginBase implements CacheableDependencyInterface, ContextAwarePluginInterface uses DependencySerializationTrait, StringTranslationTrait, TypedDataTrait

9 files declare their use of ContextAwarePluginBase

BlockBase.php in core/lib/Drupal/Core/Block/BlockBase.php

ContextAwarePluginBaseTest.php in core/tests/Drupal/KernelTests/Core/Plugin/Context/ContextAwarePluginBaseTest.php

ContextHandlerTest.php in core/tests/Drupal/KernelTests/Core/Plugin/ContextHandlerTest.php

ExecutablePluginBase.php in core/lib/Drupal/Core/Executable/ExecutablePluginBase.php

MockComplexContextBlock.php in core/modules/system/tests/modules/plugin_test/src/Plugin/plugin_test/mock_block/MockComplexContextBlock.php

... See full list

File

core/lib/Drupal/Core/Plugin/ContextAwarePluginBase.php, line 20

Namespace

Drupal\Core\Plugin

abstract class ContextAwarePluginBase extends ComponentContextAwarePluginBase implements ContextAwarePluginInterface, CacheableDependencyInterface {
  use TypedDataTrait;
  use StringTranslationTrait;
  use DependencySerializationTrait;

  /**
   * {@inheritdoc}
   *
   * @return \Drupal\Core\Plugin\Context\ContextInterface[]
   */
  protected function createContextFromConfiguration(array $context_configuration) {

    // This method is overridden so that it will use
    // \Drupal\Core\Plugin\Context\Context instead.
    $contexts = [];
    foreach ($context_configuration as $key => $value) {
      $context_definition = $this
        ->getContextDefinition($key);
      $contexts[$key] = new Context($context_definition, $value);
    }
    return $contexts;
  }

  /**
   * {@inheritdoc}
   *
   * This code is identical to the Component in order to pick up a different
   * Context class.
   *
   * @return \Drupal\Core\Plugin\Context\ContextInterface
   *   The context object.
   */
  public function getContext($name) {

    // Check for a valid context value.
    if (!isset($this->context[$name])) {
      $this->context[$name] = new Context($this
        ->getContextDefinition($name));
    }
    return $this->context[$name];
  }

  /**
   * {@inheritdoc}
   */
  public function setContext($name, ComponentContextInterface $context) {

    // Check that the context passed is an instance of our extended interface.
    if (!$context instanceof ContextInterface) {
      throw new ContextException("Passed {$name} context must be an instance of \\Drupal\\Core\\Plugin\\Context\\ContextInterface");
    }
    parent::setContext($name, $context);
  }

  /**
   * {@inheritdoc}
   */
  public function setContextValue($name, $value) {
    $this
      ->setContext($name, Context::createFromContext($this
      ->getContext($name), $value));
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getContextMapping() {
    $configuration = PluginHelper::isConfigurable($this) ? $this
      ->getConfiguration() : $this->configuration;
    return isset($configuration['context_mapping']) ? $configuration['context_mapping'] : [];
  }

  /**
   * {@inheritdoc}
   */
  public function setContextMapping(array $context_mapping) {
    if (PluginHelper::isConfigurable($this)) {
      $configuration = $this
        ->getConfiguration();
      $configuration['context_mapping'] = array_filter($context_mapping);
      $this
        ->setConfiguration($configuration);
    }
    else {
      $this->configuration['context_mapping'] = $context_mapping;
    }
    return $this;
  }

  /**
   * {@inheritdoc}
   *
   * @return \Drupal\Core\Plugin\Context\ContextDefinitionInterface[]
   */
  public function getContextDefinitions() {
    return parent::getContextDefinitions();
  }

  /**
   * {@inheritdoc}
   *
   * @return \Drupal\Core\Plugin\Context\ContextDefinitionInterface
   */
  public function getContextDefinition($name) {
    return parent::getContextDefinition($name);
  }

  /**
   * Wraps the context handler.
   *
   * @return \Drupal\Core\Plugin\Context\ContextHandlerInterface
   */
  protected function contextHandler() {
    return \Drupal::service('context.handler');
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheContexts() {
    $cache_contexts = [];

    // Applied contexts can affect the cache contexts when this plugin is
    // involved in caching, collect and return them.
    foreach ($this
      ->getContexts() as $context) {

      /** @var $context \Drupal\Core\Cache\CacheableDependencyInterface */
      if ($context instanceof CacheableDependencyInterface) {
        $cache_contexts = Cache::mergeContexts($cache_contexts, $context
          ->getCacheContexts());
      }
    }
    return $cache_contexts;
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheTags() {
    $tags = [];

    // Applied contexts can affect the cache tags when this plugin is
    // involved in caching, collect and return them.
    foreach ($this
      ->getContexts() as $context) {

      /** @var $context \Drupal\Core\Cache\CacheableDependencyInterface */
      if ($context instanceof CacheableDependencyInterface) {
        $tags = Cache::mergeTags($tags, $context
          ->getCacheTags());
      }
    }
    return $tags;
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheMaxAge() {
    $max_age = Cache::PERMANENT;

    // Applied contexts can affect the cache max age when this plugin is
    // involved in caching, collect and return them.
    foreach ($this
      ->getContexts() as $context) {

      /** @var $context \Drupal\Core\Cache\CacheableDependencyInterface */
      if ($context instanceof CacheableDependencyInterface) {
        $max_age = Cache::mergeMaxAges($max_age, $context
          ->getCacheMaxAge());
      }
    }
    return $max_age;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ContextAwarePluginBase::$context	protected	property	The data objects representing the context of this plugin.
ContextAwarePluginBase::$contexts Deprecated	private	property	Data objects representing the contexts passed in the plugin configuration.
ContextAwarePluginBase::contextHandler	protected	function	Wraps the context handler.
ContextAwarePluginBase::createContextFromConfiguration	protected	function	Overrides ContextAwarePluginBase::createContextFromConfiguration
ContextAwarePluginBase::getCacheContexts	public	function	The cache contexts associated with this object. Overrides CacheableDependencyInterface::getCacheContexts	9
ContextAwarePluginBase::getCacheMaxAge	public	function	The maximum age for which this object may be cached. Overrides CacheableDependencyInterface::getCacheMaxAge	7
ContextAwarePluginBase::getCacheTags	public	function	The cache tags associated with this object. Overrides CacheableDependencyInterface::getCacheTags	4
ContextAwarePluginBase::getContext	public	function	This code is identical to the Component in order to pick up a different Context class. Overrides ContextAwarePluginBase::getContext
ContextAwarePluginBase::getContextDefinition	public	function	Overrides ContextAwarePluginBase::getContextDefinition
ContextAwarePluginBase::getContextDefinitions	public	function	Overrides ContextAwarePluginBase::getContextDefinitions
ContextAwarePluginBase::getContextMapping	public	function	Gets a mapping of the expected assignment names to their context names. Overrides ContextAwarePluginInterface::getContextMapping
ContextAwarePluginBase::getContexts	public	function	Gets the defined contexts. Overrides ContextAwarePluginInterface::getContexts
ContextAwarePluginBase::getContextValue	public	function	Gets the value for a defined context. Overrides ContextAwarePluginInterface::getContextValue
ContextAwarePluginBase::getContextValues	public	function	Gets the values for all defined contexts. Overrides ContextAwarePluginInterface::getContextValues
ContextAwarePluginBase::setContext	public	function	Set a context on this plugin. Overrides ContextAwarePluginBase::setContext
ContextAwarePluginBase::setContextMapping	public	function	Sets a mapping of the expected assignment names to their context names. Overrides ContextAwarePluginInterface::setContextMapping
ContextAwarePluginBase::setContextValue	public	function	Sets the value for a defined context. Overrides ContextAwarePluginBase::setContextValue
ContextAwarePluginBase::validateContexts	public	function	Validates the set values for the defined contexts. Overrides ContextAwarePluginInterface::validateContexts
ContextAwarePluginBase::__construct	public	function	Overrides \Drupal\Component\Plugin\PluginBase::__construct(). Overrides PluginBase::__construct	4
ContextAwarePluginBase::__get	public	function	Implements magic __get() method.
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
StringTranslationTrait::$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.
TypedDataTrait::$typedDataManager	protected	property	The typed data manager used for creating the data types.
TypedDataTrait::getTypedDataManager	public	function	Gets the typed data manager.	2
TypedDataTrait::setTypedDataManager	public	function	Sets the typed data manager.	2