Version 1

[yaffs-website] / web / core / lib / Drupal / Core / RouteProcessor / RouteProcessorManager.php

diff --git a/web/core/lib/Drupal/Core/RouteProcessor/RouteProcessorManager.php b/web/core/lib/Drupal/Core/RouteProcessor/RouteProcessorManager.php
new file mode 100644 (file)
index 0000000..74a791d
--- /dev/null
+++ b/web/core/lib/Drupal/Core/RouteProcessor/RouteProcessorManager.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace Drupal\Core\RouteProcessor;
+
+use Drupal\Core\Render\BubbleableMetadata;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Route processor manager.
+ *
+ * Holds an array of route processor objects and uses them to sequentially
+ * process an outbound route, in order of processor priority.
+ */
+class RouteProcessorManager implements OutboundRouteProcessorInterface {
+
+  /**
+   * Holds the array of outbound processors to cycle through.
+   *
+   * @var array
+   *   An array whose keys are priorities and whose values are arrays of path
+   *   processor objects.
+   */
+  protected $outboundProcessors = [];
+
+  /**
+   * Holds the array of outbound processors, sorted by priority.
+   *
+   * @var array
+   *   An array of path processor objects.
+   */
+  protected $sortedOutbound = [];
+
+  /**
+   * Adds an outbound processor object to the $outboundProcessors property.
+   *
+   * @param \Drupal\Core\RouteProcessor\OutboundRouteProcessorInterface $processor
+   *   The processor object to add.
+   * @param int $priority
+   *   The priority of the processor being added.
+   */
+  public function addOutbound(OutboundRouteProcessorInterface $processor, $priority = 0) {
+    $this->outboundProcessors[$priority][] = $processor;
+    $this->sortedOutbound = [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processOutbound($route_name, Route $route, array &$parameters, BubbleableMetadata $bubbleable_metadata = NULL) {
+    $processors = $this->getOutbound();
+    foreach ($processors as $processor) {
+      $processor->processOutbound($route_name, $route, $parameters, $bubbleable_metadata);
+    }
+  }
+
+  /**
+   * Returns the sorted array of outbound processors.
+   *
+   * @return array
+   *   An array of processor objects.
+   */
+  protected function getOutbound() {
+    if (empty($this->sortedOutbound)) {
+      $this->sortedOutbound = $this->sortProcessors();
+    }
+
+    return $this->sortedOutbound;
+  }
+
+  /**
+   * Sorts the processors according to priority.
+   */
+  protected function sortProcessors() {
+    $sorted = [];
+    krsort($this->outboundProcessors);
+
+    foreach ($this->outboundProcessors as $processors) {
+      $sorted = array_merge($sorted, $processors);
+    }
+    return $sorted;
+  }
+
+}