Issue #3352714: Make Ajax response alterable from Layout Paragraphs operations

src/Controller/ChooseComponentController.php

@@ -8,6 +8,8 @@ use Drupal\Core\Template\Attribute;
 use Drupal\Core\Ajax\AjaxHelperTrait;
 use Drupal\Core\Ajax\OpenDialogCommand;
 use Drupal\Core\Controller\ControllerBase;
+use Drupal\layout_paragraphs\Event\LayoutParagraphsAjaxResponseEvent;
+use Drupal\layout_paragraphs\Event\LayoutParagraphsAjaxResponseEvents;
 use Drupal\layout_paragraphs\Utility\Dialog;
 use Symfony\Component\HttpFoundation\Request;
 use Drupal\layout_paragraphs\LayoutParagraphsLayout;
@@ -139,6 +141,8 @@ class ChooseComponentController extends ControllerBase {
       $response = new AjaxResponse();
       $selector = Dialog::dialogSelector($layout_paragraphs_layout);
       $response->addCommand(new OpenDialogCommand($selector, $form['#title'], $form, Dialog::dialogSettings()));
+      $this->eventDispatcher->dispatch(new LayoutParagraphsAjaxResponseEvent($response), LayoutParagraphsAjaxResponseEvents::COMPONENT_FORM_CHOOSE);
+      $this->eventDispatcher->dispatch(new LayoutParagraphsAjaxResponseEvent($response), LayoutParagraphsAjaxResponseEvents::LAYOUT_PARAGRAPH);
       return $response;
     }
     return $form;