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<?php
namespace Drupal\Core\Condition;
use Drupal\Component\Plugin\CategorizingPluginManagerInterface;
use Drupal\Core\Cache\CacheBackendInterface;
use Drupal\Core\Condition\Attribute\Condition;
use Drupal\Core\Executable\ExecutableException;
use Drupal\Core\Executable\ExecutableInterface;
use Drupal\Core\Executable\ExecutableManagerInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Plugin\CategorizingPluginManagerTrait;
use Drupal\Core\Plugin\DefaultPluginManager;
use Drupal\Core\Plugin\FilteredPluginManagerInterface;
use Drupal\Core\Plugin\FilteredPluginManagerTrait;
/**
* A plugin manager for condition plugins.
*
* @see \Drupal\Core\Condition\Attribute\Condition
* @see \Drupal\Core\Condition\ConditionInterface
* @see \Drupal\Core\Condition\ConditionPluginBase
*
* @ingroup plugin_api
*/
class ConditionManager extends DefaultPluginManager implements ExecutableManagerInterface, CategorizingPluginManagerInterface, FilteredPluginManagerInterface {
use CategorizingPluginManagerTrait;
use FilteredPluginManagerTrait;
/**
* 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,
$module_handler,
ConditionInterface::class,
Condition::class,
'Drupal\Core\Condition\Annotation\Condition'
);
}
/**
* {@inheritdoc}
*/
protected function getType() {
return 'condition';
}
/**
* {@inheritdoc}
*/
public function createInstance($plugin_id, array $configuration = []) {
$plugin = $this->getFactory()->createInstance($plugin_id, $configuration);
return $plugin->setExecutableManager($this);
}
/**
* {@inheritdoc}
*/
public function execute(ExecutableInterface $condition) {
if ($condition instanceof ConditionInterface) {
$result = $condition->evaluate();
return $condition->isNegated() ? !$result : $result;
}
throw new ExecutableException("This manager object can only execute condition plugins");
}
}
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