Updated to Drupal 8.5. Core Media not yet in use.
[yaffs-website] / web / core / modules / system / tests / modules / js_ajax_test / src / Form / JsAjaxTestForm.php
diff --git a/web/core/modules/system/tests/modules/js_ajax_test/src/Form/JsAjaxTestForm.php b/web/core/modules/system/tests/modules/js_ajax_test/src/Form/JsAjaxTestForm.php
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+<?php
+
+namespace Drupal\js_ajax_test\Form;
+
+use Drupal\Core\Ajax\AjaxResponse;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\js_ajax_test\Ajax\JsAjaxTestCommand;
+
+/**
+ * Test form for js_ajax_test
+ *
+ * @internal
+ */
+class JsAjaxTestForm extends FormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'js_ajax_test_form';
+  }
+
+  /**
+   * Form for testing the addition of various types of elements via Ajax.
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form['#attached']['library'][] = 'js_ajax_test/ajax';
+    $form['custom']['#prefix'] = '<div id="js_ajax_test_form_wrapper">';
+    $form['custom']['#suffix'] = '</div>';
+
+    // Button to test for the waitForButton() assertion.
+    $form['test_button'] = [
+      '#type' => 'submit',
+      '#value' => $this->t('Add button'),
+      '#button_type' => 'primary',
+      '#ajax' => [
+        'callback' => [static::class, 'addButton'],
+        'progress' => [
+          'type' => 'throbber',
+          'message' => NULL,
+        ],
+        'wrapper' => 'js_ajax_test_form_wrapper',
+      ],
+    ];
+    return $form;
+  }
+
+  /**
+   * Ajax callback for the "Add button" button.
+   */
+  public static function addButton(array $form, FormStateInterface $form_state) {
+    return (new AjaxResponse())
+      ->addCommand(new JsAjaxTestCommand());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // An empty implementation, as we never submit the actual form.
+  }
+
+}