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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Drupal\display_builder_entity_view\Plugin\UiPatterns\Source; |
| 6 | |
| 7 | use Drupal\Core\Entity\Entity\EntityViewDisplay; |
| 8 | use Drupal\Core\Entity\EntityFieldManagerInterface; |
| 9 | use Drupal\Core\Entity\EntityTypeManagerInterface; |
| 10 | use Drupal\Core\Entity\FieldableEntityInterface; |
| 11 | use Drupal\Core\Form\FormStateInterface; |
| 12 | use Drupal\Core\Plugin\Context\ContextDefinition; |
| 13 | use Drupal\Core\StringTranslation\TranslatableMarkup; |
| 14 | use Drupal\display_builder\RenderableBuilderTrait; |
| 15 | use Drupal\ui_patterns\Attribute\Source; |
| 16 | use Drupal\ui_patterns\SourcePluginBase; |
| 17 | use Symfony\Component\DependencyInjection\ContainerInterface; |
| 18 | |
| 19 | /** |
| 20 | * Plugin implementation of the source. |
| 21 | */ |
| 22 | #[Source( |
| 23 | id: 'extra_field', |
| 24 | label: new TranslatableMarkup('Extra field'), |
| 25 | description: new TranslatableMarkup('An entity extra field.'), |
| 26 | prop_types: ['slot'], |
| 27 | context_definitions: [ |
| 28 | 'entity' => new ContextDefinition('entity', label: new TranslatableMarkup('Entity'), required: TRUE), |
| 29 | 'view_mode' => new ContextDefinition('string', label: new TranslatableMarkup('View mode'), required: FALSE), |
| 30 | ] |
| 31 | )] |
| 32 | class ExtraFieldSource extends SourcePluginBase { |
| 33 | |
| 34 | use RenderableBuilderTrait; |
| 35 | |
| 36 | /** |
| 37 | * The entity field manager. |
| 38 | */ |
| 39 | protected EntityFieldManagerInterface $entityFieldManager; |
| 40 | |
| 41 | /** |
| 42 | * The entity type manager. |
| 43 | */ |
| 44 | protected EntityTypeManagerInterface $entityTypeManager; |
| 45 | |
| 46 | /** |
| 47 | * {@inheritdoc} |
| 48 | */ |
| 49 | public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition): static { |
| 50 | $instance = parent::create($container, $configuration, $plugin_id, $plugin_definition); |
| 51 | $instance->entityFieldManager = $container->get('entity_field.manager'); |
| 52 | $instance->entityTypeManager = $container->get('entity_type.manager'); |
| 53 | |
| 54 | return $instance; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * {@inheritdoc} |
| 59 | */ |
| 60 | public function defaultSettings(): array { |
| 61 | return [ |
| 62 | 'field' => NULL, |
| 63 | ]; |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * {@inheritdoc} |
| 68 | */ |
| 69 | public function settingsSummary(): array { |
| 70 | $field = $this->getSetting('field'); |
| 71 | |
| 72 | if (!$field) { |
| 73 | return [$this->t('No field selected')]; |
| 74 | } |
| 75 | |
| 76 | $definitions = $this->getDefinitions(); |
| 77 | |
| 78 | if (!$definitions || !isset($definitions[$field])) { |
| 79 | return []; |
| 80 | } |
| 81 | |
| 82 | if (empty($definitions[$field]['label'])) { |
| 83 | return [$this->t('No field selected')]; |
| 84 | } |
| 85 | |
| 86 | return [\strip_tags((string) $definitions[$field]['label'])]; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * {@inheritdoc} |
| 91 | */ |
| 92 | public function getPropValue(): mixed { |
| 93 | $field = $this->getSetting('field'); |
| 94 | |
| 95 | if (!$field) { |
| 96 | return []; |
| 97 | } |
| 98 | |
| 99 | /** @var \Drupal\Core\Entity\FieldableEntityInterface $entity */ |
| 100 | $entity = $this->getContextValue('entity'); |
| 101 | $view_mode = $this->getContextValue('view_mode') ?? 'default'; |
| 102 | |
| 103 | if (!$entity->id()) { |
| 104 | return $this->renderPlaceholder($field); |
| 105 | } |
| 106 | |
| 107 | // Prevent infinite recursion: buildComponents() calls |
| 108 | // display->buildMultiple() which triggers |
| 109 | // EntityViewDisplayTrait::buildMultiple() → buildSources() → |
| 110 | // ExtraFieldSource::getPropValue() when Display builder is enabled. |
| 111 | static $rendering = []; |
| 112 | $render_key = $entity->getEntityTypeId() . ':' . $entity->id() . ':' . $field . ':' . $view_mode; |
| 113 | |
| 114 | if (isset($rendering[$render_key])) { |
| 115 | return []; |
| 116 | } |
| 117 | $rendering[$render_key] = TRUE; |
| 118 | |
| 119 | try { |
| 120 | return $this->buildExtraField($entity, $field, $view_mode); |
| 121 | } |
| 122 | finally { |
| 123 | unset($rendering[$render_key]); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * {@inheritdoc} |
| 129 | */ |
| 130 | public function settingsForm(array $form, FormStateInterface $form_state): array { |
| 131 | $options = ['' => $this->t('- Select -')]; |
| 132 | |
| 133 | foreach ($this->getDefinitions() as $field_name => $definition) { |
| 134 | $options[$field_name] = $definition['label']; |
| 135 | } |
| 136 | $form['field'] = [ |
| 137 | '#type' => 'select', |
| 138 | '#options' => $options, |
| 139 | '#default_value' => $this->getSetting('field'), |
| 140 | ]; |
| 141 | |
| 142 | return $form; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Render placeholder when a proper entity is not loaded. |
| 147 | * |
| 148 | * @param string $field |
| 149 | * Extra field ID. |
| 150 | * |
| 151 | * @return array |
| 152 | * A renderable array. |
| 153 | */ |
| 154 | protected function renderPlaceholder(string $field): array { |
| 155 | $definition = $this->getDefinitions()[$field] ?? NULL; |
| 156 | |
| 157 | if (!$definition) { |
| 158 | return []; |
| 159 | } |
| 160 | |
| 161 | $label = $definition['label'] ?? $this->t('No field selected'); |
| 162 | $build = $this->buildPlaceholderButton($this->t('Extra field: @field', ['@field' => \strip_tags((string) $label)])); |
| 163 | |
| 164 | return $build; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Get extra field definitions. |
| 169 | * |
| 170 | * Extra fields are not plugins but old-fashioned hooks. |
| 171 | * |
| 172 | * @throws \Drupal\Component\Plugin\Exception\ContextException |
| 173 | * |
| 174 | * @return array |
| 175 | * A list of extra field definition. |
| 176 | */ |
| 177 | protected function getDefinitions(): array { |
| 178 | /** @var \Drupal\Core\Entity\FieldableEntityInterface $entity */ |
| 179 | $entity = $this->getContextValue('entity'); |
| 180 | $entity_type_id = $entity->getEntityTypeId(); |
| 181 | $bundle = $entity->bundle(); |
| 182 | |
| 183 | $extra_fields = $this->entityFieldManager->getExtraFields($entity_type_id, $bundle); |
| 184 | |
| 185 | return $extra_fields['display'] ?? []; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Builds the extra field render array. |
| 190 | * |
| 191 | * @param \Drupal\Core\Entity\FieldableEntityInterface $entity |
| 192 | * The entity. |
| 193 | * @param string $field |
| 194 | * The extra field ID. |
| 195 | * @param string $view_mode |
| 196 | * The view mode. |
| 197 | * |
| 198 | * @return array |
| 199 | * The render array. |
| 200 | */ |
| 201 | private function buildExtraField(FieldableEntityInterface $entity, string $field, string $view_mode): array { |
| 202 | $entity_type_id = $entity->getEntityTypeId(); |
| 203 | $display = EntityViewDisplay::collectRenderDisplay($entity, $view_mode); |
| 204 | |
| 205 | // Register the extra field as a component on the display. Implementations |
| 206 | // of hook_entity_view() and hook_ENTITY_TYPE_view() often guard rendering |
| 207 | // with $display->getComponent($field_name), which would silently skip |
| 208 | // the field if it is not enabled in the underlying entity view display. |
| 209 | if (!$display->getComponent($field)) { |
| 210 | $display->setComponent($field); |
| 211 | } |
| 212 | |
| 213 | $view_builder = $this->entityTypeManager->getViewBuilder($entity_type_id); |
| 214 | $entity_key = (string) $entity->id(); |
| 215 | |
| 216 | // Build component additions from the concrete view builder implementation. |
| 217 | // For nodes this includes NodeViewBuilder::buildComponents(), which adds |
| 218 | // extras like 'links' and 'langcode' before view hooks run. |
| 219 | // Populate protected build defaults (e.g. CommentViewBuilder sets |
| 220 | // #comment_threaded) so buildComponents() receives a complete build array. |
| 221 | $get_defaults = \Closure::bind( |
| 222 | function ($e, $vm) { |
| 223 | // @phpstan-ignore-next-line |
| 224 | return $this->getBuildDefaults($e, $vm); |
| 225 | }, |
| 226 | $view_builder, |
| 227 | \get_class($view_builder) |
| 228 | ); |
| 229 | $defaults = $get_defaults($entity, $view_mode); |
| 230 | // Strip cache metadata and the entity key — handled separately below. |
| 231 | unset($defaults['#cache'], $defaults['#' . $entity_type_id]); |
| 232 | $build_list = [ |
| 233 | $entity_key => $defaults + [ |
| 234 | '#' . $entity_type_id => $entity, |
| 235 | '#view_mode' => $view_mode, |
| 236 | ], |
| 237 | ]; |
| 238 | $view_builder->buildComponents($build_list, [$entity_key => $entity], [$entity->bundle() => $display], $view_mode); |
| 239 | |
| 240 | /** @var array<string, mixed> $build */ |
| 241 | $build = []; |
| 242 | |
| 243 | if (isset($build_list[$entity_key])) { |
| 244 | $build += $build_list[$entity_key]; |
| 245 | } |
| 246 | |
| 247 | // Invoke both the entity-type-specific and the generic hook so all |
| 248 | // extra-field implementations are reached regardless of which hook they |
| 249 | // use. Core EntityViewBuilder does the same. |
| 250 | // @see \Drupal\Core\Entity\EntityViewBuilder::view() |
| 251 | $this->moduleHandler->invokeAll($entity_type_id . '_view', [&$build, $entity, $display, $view_mode]); |
| 252 | $this->moduleHandler->invokeAll('entity_view', [&$build, $entity, $display, $view_mode]); |
| 253 | |
| 254 | $field_build = $build[$field] ?? []; |
| 255 | |
| 256 | // Twig filters like |add_class and |set_attribute unconditionally add |
| 257 | // #attributes to whatever render array they receive. |
| 258 | // A #lazy_builder element cannot have sibling properties — the renderer |
| 259 | // asserts this at Renderer.php:396. |
| 260 | // Wrapping in a span means the filter targets the span element instead, |
| 261 | // so the class is rendered in the DOM and the #lazy_builder stays clean. |
| 262 | if (isset($field_build['#lazy_builder'])) { |
| 263 | return [ |
| 264 | '#type' => 'html_tag', |
| 265 | '#tag' => 'span', |
| 266 | 'lazy' => $field_build, |
| 267 | ]; |
| 268 | } |
| 269 | |
| 270 | return $field_build; |
| 271 | } |
| 272 | |
| 273 | } |