diff core/modules/node/src/ContextProvider/NodeRouteContext.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/node/src/ContextProvider/NodeRouteContext.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,72 @@
+<?php
+
+namespace Drupal\node\ContextProvider;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Plugin\Context\Context;
+use Drupal\Core\Plugin\Context\ContextDefinition;
+use Drupal\Core\Plugin\Context\ContextProviderInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\node\Entity\Node;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * Sets the current node as a context on node routes.
+ */
+class NodeRouteContext implements ContextProviderInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * The route match object.
+   *
+   * @var \Drupal\Core\Routing\RouteMatchInterface
+   */
+  protected $routeMatch;
+
+  /**
+   * Constructs a new NodeRouteContext.
+   *
+   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
+   *   The route match object.
+   */
+  public function __construct(RouteMatchInterface $route_match) {
+    $this->routeMatch = $route_match;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRuntimeContexts(array $unqualified_context_ids) {
+    $result = [];
+    $context_definition = new ContextDefinition('entity:node', NULL, FALSE);
+    $value = NULL;
+    if (($route_object = $this->routeMatch->getRouteObject()) && ($route_contexts = $route_object->getOption('parameters')) && isset($route_contexts['node'])) {
+      if ($node = $this->routeMatch->getParameter('node')) {
+        $value = $node;
+      }
+    }
+    elseif ($this->routeMatch->getRouteName() == 'node.add') {
+      $node_type = $this->routeMatch->getParameter('node_type');
+      $value = Node::create(['type' => $node_type->id()]);
+    }
+
+    $cacheability = new CacheableMetadata();
+    $cacheability->setCacheContexts(['route']);
+
+    $context = new Context($context_definition, $value);
+    $context->addCacheableDependency($cacheability);
+    $result['node'] = $context;
+
+    return $result;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAvailableContexts() {
+    $context = new Context(new ContextDefinition('entity:node', $this->t('Node from URL')));
+    return ['node' => $context];
+  }
+
+}