Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Plugin / Discovery / InfoHookDecorator.php

diff --git a/web/core/lib/Drupal/Core/Plugin/Discovery/InfoHookDecorator.php b/web/core/lib/Drupal/Core/Plugin/Discovery/InfoHookDecorator.php
new file mode 100644 (file)
index 0000000..6501ce0
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Plugin/Discovery/InfoHookDecorator.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Drupal\Core\Plugin\Discovery;
+
+use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
+use Drupal\Component\Plugin\Discovery\DiscoveryTrait;
+
+/**
+ * Allows info hook implementations to enhance discovered plugin definitions.
+ */
+class InfoHookDecorator implements DiscoveryInterface {
+
+  use DiscoveryTrait;
+
+  /**
+   * The Discovery object being decorated.
+   *
+   * @var \Drupal\Component\Plugin\Discovery\DiscoveryInterface
+   */
+  protected $decorated;
+
+  /**
+   * The name of the info hook that will be implemented by this discovery instance.
+   *
+   * @var string
+   */
+  protected $hook;
+
+  /**
+   * Constructs a InfoHookDecorator object.
+   *
+   * @param \Drupal\Component\Plugin\Discovery\DiscoveryInterface $decorated
+   *   The object implementing DiscoveryInterface that is being decorated.
+   * @param string $hook
+   *   The name of the info hook to be invoked by this discovery instance.
+   */
+  public function __construct(DiscoveryInterface $decorated, $hook) {
+    $this->decorated = $decorated;
+    $this->hook = $hook;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDefinitions() {
+    $definitions = $this->decorated->getDefinitions();
+    foreach (\Drupal::moduleHandler()->getImplementations($this->hook) as $module) {
+      $function = $module . '_' . $this->hook;
+      $function($definitions);
+    }
+    return $definitions;
+  }
+
+  /**
+   * Passes through all unknown calls onto the decorated object.
+   */
+  public function __call($method, $args) {
+    return call_user_func_array([$this->decorated, $method], $args);
+  }
+
+}