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<?php
namespace Drupal\Core\Display;
use Drupal\Core\Cache\CacheBackendInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Plugin\DefaultPluginManager;
/**
* Manages discovery of display variant plugins.
*
* @see \Drupal\Core\Display\Annotation\DisplayVariant
* @see \Drupal\Core\Display\VariantInterface
* @see \Drupal\Core\Display\VariantBase
* @see plugin_api
*/
class VariantManager extends DefaultPluginManager {
/**
* Constructs a new VariantManager.
*
* @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) {
parent::__construct('Plugin/DisplayVariant', $namespaces, $module_handler, 'Drupal\Core\Display\VariantInterface', 'Drupal\Core\Display\Annotation\DisplayVariant');
$this->setCacheBackend($cache_backend, 'variant_plugins');
$this->alterInfo('display_variant_plugin');
}
}