Issue #3474986: Add support for the ProcessedText element

src/Plugin/GraphQL/DataProducer/WebformRenderElement.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\graphql_webform\Plugin\GraphQL\DataProducer;
+
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Render\RendererInterface;
+use Drupal\graphql\Plugin\GraphQL\DataProducer\DataProducerPluginBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Renders a Webform element.
+ *
+ * @DataProducer(
+ *   id = "webform_render_element",
+ *   name = @Translation("Webform render element"),
+ *   description = @Translation("Renders the Webform element."),
+ *   produces = @ContextDefinition("any",
+ *     label = @Translation("Rendered Webform element"),
+ *   ),
+ *   consumes = {
+ *     "element" = @ContextDefinition("any",
+ *       label = @Translation("Webform element as a render array"),
+ *     )
+ *   }
+ * )
+ */
+class WebformRenderElement extends DataProducerPluginBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * Constructs a new WebformRenderElement data producer.
+   *
+   * @param array $configuration
+   *   The plugin configuration.
+   * @param string $pluginId
+   *   The plugin ID.
+   * @param mixed $pluginDefinition
+   *   The plugin definition.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The renderer.
+   */
+  public function __construct(
+    array $configuration,
+    $pluginId,
+    $pluginDefinition,
+    protected RendererInterface $renderer,
+  ) {
+    parent::__construct($configuration, $pluginId, $pluginDefinition);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('renderer')
+    );
+  }
+
+  /**
+   * Renders the Webform element.
+   *
+   * @param array $element
+   *   The Webform element as a render array.
+   *
+   * @return string
+   *   The rendered Webform element.
+   */
+  public function resolve(array $element): string {
+    // The Webform module is wrapping its elements in the 'form_element' theme
+    // wrapper since it is designed to show its forms in the Drupal theming
+    // layer. Remove the wrapper to render the element as a standalone element.
+    if (!empty($element['#theme_wrappers'])) {
+      $element['#theme_wrappers'] = array_diff($element['#theme_wrappers'], ['form_element']);
+    }
+    return (string) $this->renderer->renderPlain($element);
+  }
+
+}

src/Plugin/GraphQL/SchemaExtension/WebformExtension.php

@@ -206,6 +206,12 @@ class WebformExtension extends SdlSchemaExtensionPluginBase {
       fn (array $value) => (WebformElementDisplayOn::tryFrom($value['#display_on'] ?? '') ?? WebformElementDisplayOn::DISPLAY_ON_FORM)->name
     ));
 
+    // WebformElementProcessedText markup.
+    $registry->addFieldResolver('WebformElementProcessedText', 'markup', $builder
+      ->produce('webform_render_element')
+      ->map('element', $builder->fromParent())
+    );
+
     // Expose information about elements that accept multiple values.
     $registry->addFieldResolver('WebformElementMultipleValuesBase', 'multipleValues', $builder
       ->produce('webform_element_multiple_values')

tests/modules/graphql_webform_test/config/install/webform.webform.graphql_webform_test_form.yml

@@ -126,6 +126,11 @@ elements: |-
     '#multiple__min_items': 2
     '#multiple__add_more_button_label': 'I want more'
     '#multiple__add_more_items': 2
+  processed_text:
+    '#type': processed_text
+    '#display_on': both
+    '#text': '<p><strong><em>Processed text</em></strong></p>'
+    '#format': basic_html
   actions:
     '#type': webform_actions
     '#title': 'Submit button(s)'

tests/queries/markup.gql

-fragment webformElementMarkup on WebformElementWebformMarkup {
+fragment webformElementMarkup on WebformElementMarkupBase {
   __typename
-  key
   markup
   displayOn
 }

tests/src/Kernel/Element/MarkupTest.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Drupal\Tests\graphql_webform\Kernel\Element;
 
+use Drupal\filter\Entity\FilterFormat;
 use Drupal\Tests\graphql_webform\Kernel\GraphQLWebformKernelTestBase;
 
 /**
@@ -13,6 +14,37 @@ use Drupal\Tests\graphql_webform\Kernel\GraphQLWebformKernelTestBase;
  */
 class MarkupTest extends GraphQLWebformKernelTestBase {
 
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'filter',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    parent::setUp();
+
+    // Create a filter format for testing the processed text. We only allow the
+    // '<strong>' and '<p>' tags. The markup in the test Webform also contains
+    // the <em> tag, which should be stripped out in the query result.
+    FilterFormat::create([
+      'format' => 'basic_html',
+      'name' => 'Basic HTML',
+      'weight' => 1,
+      'filters' => [
+        'filter_html' => [
+          'status' => 1,
+          'settings' => [
+            'allowed_html' => '<strong><p>',
+          ],
+        ],
+      ],
+    ])->save();
+  }
+
   /**
    * Tests custom markup.
    */
@@ -24,10 +56,15 @@ class MarkupTest extends GraphQLWebformKernelTestBase {
         'elements' => [
           5 => [
             '__typename' => 'WebformElementWebformMarkup',
-            'key' => 'markup',
             'markup' => '<strong>Markup</strong>',
             'displayOn' => 'DISPLAY_ON_FORM',
           ],
+          14 => [
+            '__typename' => 'WebformElementProcessedText',
+            // The '<em>' tag should be stripped out.
+            'markup' => '<p><strong>Processed text</strong></p>',
+            'displayOn' => 'DISPLAY_ON_BOTH',
+          ],
         ],
       ],
     ], $this->defaultCacheMetaData());

tests/src/Kernel/GraphQLWebformKernelTestBase.php

@@ -62,6 +62,7 @@ abstract class GraphQLWebformKernelTestBase extends GraphQLTestBase {
   protected function setUp(): void {
     parent::setUp();
 
+    $this->installEntitySchema('path_alias');
     $this->installSchema('webform', ['webform']);
     $this->installConfig(['webform', 'graphql_webform_test']);