Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/node/src/NodePermissions.php

@@ -0,0 +1,82 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\node\NodePermissions.
+ */
+
+namespace Drupal\node;
+
+use Drupal\Core\Routing\UrlGeneratorTrait;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\node\Entity\NodeType;
+
+/**
+ * Defines a class containing permission callbacks.
+ */
+class NodePermissions {
+
+  use StringTranslationTrait;
+  use UrlGeneratorTrait;
+
+  /**
+   * Gets an array of node type permissions.
+   *
+   * @return array
+   *   The node type permissions.
+   *   @see \Drupal\user\PermissionHandlerInterface::getPermissions()
+   */
+  public function nodeTypePermissions() {
+    $perms = array();
+    // Generate node permissions for all node types.
+    foreach (NodeType::loadMultiple() as $type) {
+      $perms += $this->buildPermissions($type);
+    }
+
+    return $perms;
+  }
+
+  /**
+   * Builds a standard list of node permissions for a given type.
+   *
+   * @param \Drupal\node\Entity\NodeType $type
+   *   The machine name of the node type.
+   *
+   * @return array
+   *   An array of permission names and descriptions.
+   */
+  protected function buildPermissions(NodeType $type) {
+    $type_id = $type->id();
+    $type_params = array('%type_name' => $type->label());
+
+    return array(
+      "create $type_id content" => array(
+        'title' => $this->t('%type_name: Create new content', $type_params),
+      ),
+      "edit own $type_id content" => array(
+        'title' => $this->t('%type_name: Edit own content', $type_params),
+      ),
+      "edit any $type_id content" => array(
+        'title' => $this->t('%type_name: Edit any content', $type_params),
+      ),
+      "delete own $type_id content" => array(
+        'title' => $this->t('%type_name: Delete own content', $type_params),
+      ),
+      "delete any $type_id content" => array(
+        'title' => $this->t('%type_name: Delete any content', $type_params),
+      ),
+      "view $type_id revisions" => array(
+        'title' => $this->t('%type_name: View revisions', $type_params),
+      ),
+      "revert $type_id revisions" => array(
+        'title' => $this->t('%type_name: Revert revisions', $type_params),
+        'description' => t('Role requires permission <em>view revisions</em> and <em>edit rights</em> for nodes in question, or <em>administer nodes</em>.'),
+      ),
+      "delete $type_id revisions" => array(
+        'title' => $this->t('%type_name: Delete revisions', $type_params),
+        'description' => $this->t('Role requires permission to <em>view revisions</em> and <em>delete rights</em> for nodes in question, or <em>administer nodes</em>.'),
+      ),
+    );
+  }
+
+}