Issue #3438379: Set _referringItem in LayoutParagraphsLayout

src/Contracts/ComponentFormInterface.php

@@ -97,4 +97,17 @@ interface ComponentFormInterface extends FormInterface {
    */
   public function successfulAjaxSubmit(array $form, FormStateInterface $form_state);
 
+  /**
+   * Get the form mode.
+   */
+  public function getFormMode();
+
+  /**
+   * Set the form view mode.
+   *
+   * @param string $view_mode
+   *   The view mode.
+   */
+  public function setFormMode($view_mode);
+
 }

src/Form/ComponentFormBase.php

@@ -83,6 +83,13 @@ abstract class ComponentFormBase extends FormBase implements ComponentFormInterf
    */
   protected $entityRepository;
 
+  /**
+   * The form mode to use for rendering the form.
+   *
+   * @var string
+   */
+  protected $formMode = 'default';
+
   /**
    * {@inheritDoc}
    */
@@ -157,7 +164,7 @@ abstract class ComponentFormBase extends FormBase implements ComponentFormInterf
     FormStateInterface $form_state) {
 
     $this->initFormLangcodes($form_state);
-    $display = EntityFormDisplay::collectRenderDisplay($this->paragraph, 'default');
+    $display = EntityFormDisplay::collectRenderDisplay($this->paragraph, $this->getFormMode());
     $display->buildForm($this->paragraph, $form, $form_state);
     $this->paragraphType = $this->paragraph->getParagraphType();
     $lp_config = $this->config('layout_paragraphs.settings');
@@ -607,4 +614,18 @@ abstract class ComponentFormBase extends FormBase implements ComponentFormInterf
     return [];
   }
 
+  /**
+   * {@inheritDoc}
+   */
+  public function getFormMode() {
+    return $this->formMode;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setFormMode($view_mode) {
+    $this->formMode = $view_mode;
+  }
+
 }

src/LayoutParagraphsLayout.php

@@ -164,6 +164,11 @@ class LayoutParagraphsLayout implements ThirdPartySettingsInterface {
    * @return $this
    */
   public function setParagraphsReferenceField(EntityReferenceFieldItemListInterface $paragraphs_reference_field) {
+    foreach ($paragraphs_reference_field as $key => $field_item) {
+      if ($field_item->entity) {
+        $paragraphs_reference_field[$key]->entity->_referringItem = $field_item;
+      }
+    }
     $this->paragraphsReferenceField = $paragraphs_reference_field;
     return $this;
   }
@@ -399,9 +404,11 @@ class LayoutParagraphsLayout implements ThirdPartySettingsInterface {
       $new_paragraph = $component->getEntity();
       $new_paragraph->setParentEntity($this->getEntity(), $this->getFieldName());
       // Splice the new paragraph into the field item list.
-      $list = $this->paragraphsReferenceField->getValue();
+      $item_list = $this->getParagraphsReferenceField();
+      $list = $item_list->getValue();
       $list[] = ['entity' => $new_paragraph];
-      $this->paragraphsReferenceField->setValue($list);
+      $item_list->setValue($list);
+      $this->setParagraphsReferenceField($item_list);
     }
     else {
       // @todo Throw exception.
@@ -470,11 +477,13 @@ class LayoutParagraphsLayout implements ThirdPartySettingsInterface {
       $new_paragraph = $new_component->getEntity();
       $new_paragraph->setParentEntity($this->getEntity(), $this->getFieldName());
       // Splice the new paragraph into the field item list.
-      $list = $this->paragraphsReferenceField->getValue();
+      $item_list = $this->getParagraphsReferenceField();
+      $list = $item_list->getValue();
       $delta = $this->getComponentDeltaByUuid($sibling_uuid);
       $delta += $delta_offset;
       array_splice($list, $delta, 0, ['entity' => $new_paragraph]);
-      $this->paragraphsReferenceField->setValue($list);
+      $item_list->setValue($list);
+      $this->setParagraphsReferenceField($item_list);
     }
     else {
       // @todo Throw exception.