Add structural_pages_event submodule for Event entity support

Bridge submodule that registers Event entities (from event_management
module) as valid parent types for content_page nodes. Events act as
context containers (clears_site_section: TRUE), similar to users and
groups.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

modules/structural_pages_event/src/Plugin/ParentEntityHandler/EventHandler.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\structural_pages_event\Plugin\ParentEntityHandler;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\event_management\Entity\EventInterface;
+use Drupal\structural_pages\Attribute\ParentEntityHandler;
+use Drupal\structural_pages\ParentEntityHandler\ParentEntityHandlerBase;
+
+/**
+ * Handler for event entities.
+ *
+ * This handler is provided by the structural_pages_event submodule and is only
+ * available when the Event Management module is installed.
+ */
+#[ParentEntityHandler(
+  id: 'event',
+  label: new TranslatableMarkup('Events (event)'),
+  entity_type_id: 'event',
+  provider_module: 'event_management',
+  clears_site_section: TRUE,
+  sort_field: 'title',
+  weight: 20,
+)]
+class EventHandler extends ParentEntityHandlerBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getEntityFromRoute(RouteMatchInterface $route_match): ?EntityInterface {
+    $event = $route_match->getParameter('event');
+
+    if (!$event instanceof EventInterface) {
+      return NULL;
+    }
+
+    return $event;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function handlesEntity(EntityInterface $entity): bool {
+    return $entity instanceof EventInterface;
+  }
+
+}

modules/structural_pages_event/structural_pages_event.info.yml

@@ -0,0 +1,8 @@
+name: 'Structural Pages Event Integration'
+type: module
+description: 'Provides Event entity support as parent type for Structural Pages module.'
+package: 'Structural Pages'
+core_version_requirement: ^10.3 || ^11
+dependencies:
+  - structural_pages:structural_pages
+  - event_management:event_management

modules/structural_pages_event/translations/structural_pages_event.pt-br.po

@@ -0,0 +1,27 @@
+# Portuguese (Brazil) translation for Structural Pages Event Integration.
+# Copyright (C) 2024
+# This file is distributed under the same license as the Drupal package.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Structural Pages Event Integration 1.0.0\n"
+"POT-Creation-Date: 2024-01-01 00:00+0000\n"
+"PO-Revision-Date: 2024-01-01 00:00+0000\n"
+"Language-Team: Portuguese, Brazil\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: pt-br\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+#: structural_pages_event.info.yml
+msgid "Structural Pages Event Integration"
+msgstr "Integração de Eventos das Páginas Estruturais"
+
+#: structural_pages_event.info.yml
+msgid "Provides Event entity support as parent type for Structural Pages module."
+msgstr "Fornece suporte a entidades Evento como tipo pai para o módulo Páginas Estruturais."
+
+#: src/Plugin/ParentEntityHandler/EventHandler.php
+msgid "Events (event)"
+msgstr "Eventos (event)"

translations/structural_pages.pt-br.po

@@ -264,3 +264,15 @@ msgstr "Integração de Grupos das Páginas Estruturais"
 #: modules/structural_pages_group/structural_pages_group.info.yml
 msgid "Provides Group entity support as parent type for Structural Pages module."
 msgstr "Fornece suporte a entidades Grupo como tipo pai para o módulo Páginas Estruturais."
+
+#: modules/structural_pages_event/src/Plugin/ParentEntityHandler/EventHandler.php
+msgid "Events (event)"
+msgstr "Eventos (event)"
+
+#: modules/structural_pages_event/structural_pages_event.info.yml
+msgid "Structural Pages Event Integration"
+msgstr "Integração de Eventos das Páginas Estruturais"
+
+#: modules/structural_pages_event/structural_pages_event.info.yml
+msgid "Provides Event entity support as parent type for Structural Pages module."
+msgstr "Fornece suporte a entidades Evento como tipo pai para o módulo Páginas Estruturais."