Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / lib / Drupal / Core / Ajax / AjaxHelperTrait.php

diff --git a/web/core/lib/Drupal/Core/Ajax/AjaxHelperTrait.php b/web/core/lib/Drupal/Core/Ajax/AjaxHelperTrait.php
new file mode 100644 (file)
index 0000000..287abae
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Ajax/AjaxHelperTrait.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Drupal\Core\Ajax;
+
+use Drupal\Core\EventSubscriber\MainContentViewSubscriber;
+
+/**
+ * Provides a helper to determine if the current request is via AJAX.
+ *
+ * @internal
+ */
+trait AjaxHelperTrait {
+
+  /**
+   * Determines if the current request is via AJAX.
+   *
+   * @return bool
+   *   TRUE if the current request is via AJAX, FALSE otherwise.
+   */
+  protected function isAjax() {
+    foreach (['drupal_ajax', 'drupal_modal', 'drupal_dialog'] as $wrapper) {
+      if (strpos($this->getRequestWrapperFormat(), $wrapper) !== FALSE) {
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+
+  /**
+   * Gets the wrapper format of the current request.
+   *
+   * @string
+   *   The wrapper format.
+   */
+  protected function getRequestWrapperFormat() {
+    return \Drupal::request()->get(MainContentViewSubscriber::WRAPPER_FORMAT);
+  }
+
+}