ConditionManager.php in Zircon Profile 8

Contains \Drupal\Core\Condition\ConditionManager.

Namespace

Drupal\Core\Condition

File

core/lib/Drupal/Core/Condition/ConditionManager.php

<?php

/**
 * @file
 * Contains \Drupal\Core\Condition\ConditionManager.
 */
namespace Drupal\Core\Condition;

use Drupal\Component\Plugin\CategorizingPluginManagerInterface;
use Drupal\Core\Cache\CacheBackendInterface;
use Drupal\Core\Executable\ExecutableManagerInterface;
use Drupal\Core\Executable\ExecutableInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Plugin\CategorizingPluginManagerTrait;
use Drupal\Core\Plugin\Context\ContextAwarePluginManagerTrait;
use Drupal\Core\Plugin\DefaultPluginManager;

/**
 * A plugin manager for condition plugins.
 *
 * @see \Drupal\Core\Condition\Annotation\Condition
 * @see \Drupal\Core\Condition\ConditionInterface
 * @see \Drupal\Core\Condition\ConditionPluginBase
 *
 * @ingroup plugin_api
 */
class ConditionManager extends DefaultPluginManager implements ExecutableManagerInterface, CategorizingPluginManagerInterface {
  use CategorizingPluginManagerTrait;
  use ContextAwarePluginManagerTrait;

  /**
   * Constructs a ConditionManager 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.
   */
  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
    $this
      ->alterInfo('condition_info');
    $this
      ->setCacheBackend($cache_backend, 'condition_plugins');
    parent::__construct('Plugin/Condition', $namespaces, $module_handler, 'Drupal\\Core\\Condition\\ConditionInterface', 'Drupal\\Core\\Condition\\Annotation\\Condition');
  }

  /**
   * Override of Drupal\Component\Plugin\PluginManagerBase::createInstance().
   */
  public function createInstance($plugin_id, array $configuration = array()) {
    $plugin = $this
      ->getFactory()
      ->createInstance($plugin_id, $configuration);

    // If we receive any context values via config set it into the plugin.
    if (!empty($configuration['context'])) {
      foreach ($configuration['context'] as $name => $context) {
        $plugin
          ->setContextValue($name, $context);
      }
    }
    return $plugin
      ->setExecutableManager($this);
  }

  /**
   * {@inheritdoc}
   */
  public function execute(ExecutableInterface $condition) {
    $result = $condition
      ->evaluate();
    return $condition
      ->isNegated() ? !$result : $result;
  }

}

Classes

Name	Description
ConditionManager	A plugin manager for condition plugins.