Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Render / Element / Token.php

diff --git a/web/core/lib/Drupal/Core/Render/Element/Token.php b/web/core/lib/Drupal/Core/Render/Element/Token.php
new file mode 100644 (file)
index 0000000..aa24435
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Render/Element/Token.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace Drupal\Core\Render\Element;
+
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Stores token data in a hidden form field.
+ *
+ * This is generally used to protect against cross-site forgeries. A token
+ * element is automatically added to each Drupal form by an implementation of
+ * \Drupal\Core\Form\FormBuilderInterface::prepareForm() so you don't generally
+ * have to add one yourself.
+ *
+ * @FormElement("token")
+ */
+class Token extends Hidden {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getInfo() {
+    $class = get_class($this);
+    return [
+      '#input' => TRUE,
+      '#pre_render' => [
+        [$class, 'preRenderHidden'],
+      ],
+      '#theme' => 'input__hidden',
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
+    if ($input !== FALSE && $input !== NULL) {
+      // This should be a string, but allow other scalars since they might be
+      // valid input in programmatic form submissions.
+      return is_scalar($input) ? (string) $input : '';
+    }
+    return NULL;
+  }
+
+}