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[yaffs-website] / web / core / modules / system / tests / modules / form_test / src / Form / FormTestOptionalContainerForm.php

diff --git a/web/core/modules/system/tests/modules/form_test/src/Form/FormTestOptionalContainerForm.php b/web/core/modules/system/tests/modules/form_test/src/Form/FormTestOptionalContainerForm.php
new file mode 100644 (file)
index 0000000..063f03a
--- /dev/null
+++ b/web/core/modules/system/tests/modules/form_test/src/Form/FormTestOptionalContainerForm.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Drupal\form_test\Form;
+
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Builds a simple form to test the #optional property on #type 'container'.
+ *
+ * @internal
+ */
+class FormTestOptionalContainerForm extends FormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'form_test_optional_container';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    // Empty containers.
+    $form['empty_optional'] = [
+      '#type' => 'container',
+      '#attributes' => ['class' => ['empty_optional']],
+      '#optional' => TRUE,
+    ];
+    $form['empty_nonoptional'] = [
+      '#type' => 'container',
+      '#attributes' => ['class' => ['empty_nonoptional']],
+      '#optional' => FALSE,
+    ];
+
+    // Non-empty containers
+    $form['nonempty_optional'] = [
+      '#type' => 'container',
+      '#attributes' => ['class' => ['nonempty_optional']],
+      '#optional' => TRUE,
+    ];
+    $form['nonempty_optional']['child_1'] = [];
+
+    $form['nonempty_nonoptional'] = [
+      '#type' => 'container',
+      '#attributes' => ['class' => ['nonempty_nonoptional']],
+      '#optional' => FALSE,
+    ];
+    $form['nonempty_nonoptional']['child_2'] = [];
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+  }
+
+}