1	<?php
2
3	declare(strict_types=1);
4
5	namespace Drupal\display_builder_page_layout\EventSubscriber;
6
7	use Drupal\Core\Entity\EntityTypeManagerInterface;
8	use Drupal\Core\Plugin\CachedDiscoveryClearerInterface;
9	use Drupal\display_builder\DisplayBuildablePluginManager;
10	use Drupal\display_builder\Event\DisplayBuilderEvent;
11	use Drupal\display_builder\Event\DisplayBuilderEvents;
12	use Drupal\display_builder_page_layout\Plugin\display_builder\Buildable\PageLayout;
13	use Symfony\Component\EventDispatcher\EventSubscriberInterface;
14
15	/**
16	* The event subscriber for display builder islands.
17	*/
18	class DisplayBuilderSubscriber implements EventSubscriberInterface {
19
20	public function __construct(
21	private CachedDiscoveryClearerInterface $pluginCacheClearer,
22	private EntityTypeManagerInterface $entityTypeManager,
23	private DisplayBuildablePluginManager $displayBuildableManager,
24	) {}
25
26	/**
27	* {@inheritdoc}
28	*/
29	public static function getSubscribedEvents(): array {
30	return [
31	DisplayBuilderEvents::ON_SAVE => 'onSave',
32	];
33	}
34
35	/**
36	* Event handler for when a display builder is saved.
37	*
38	* @param \Drupal\display_builder\Event\DisplayBuilderEvent $event
39	*   The event object.
40	*/
41	public function onSave(DisplayBuilderEvent $event): void {
42	$builder_id = $event->getBuilderId();
43	$contexts = $event->getData();
44	$params = PageLayout::checkInstanceId($builder_id);
45
46	if (!$params) {
47	return;
48	}
49
50	// Context requirements is set to allow SourcePlugin when editing. We need
51	// a precedence when saving.
52	// @todo perhaps we need a third context.
53	/** @var \Drupal\display_builder\InstanceInterface $instance */
54	$instance = $this->entityTypeManager->getStorage('display_builder_instance')->load($builder_id);
55
56	if (!$instance->hasSaveContextsRequirement(PageLayout::getContextRequirement(), $contexts)) {
57	return;
58	}
59	$page_layout_id = $params['page_layout'] ?? NULL;
60
61	if (!$page_layout_id) {
62	// This must never happen because PageLayout::checkInstanceId() always
63	// return a page_layout key.
64	return;
65	}
66	/** @var \Drupal\display_builder_page_layout\PageLayoutInterface $page_layout */
67	$page_layout = $this->entityTypeManager->getStorage('page_layout')->load($page_layout_id);
68	/** @var \Drupal\display_builder\DisplayBuildableInterface $buildable */
69	$buildable = $this->displayBuildableManager->createInstance('page_layout', ['entity' => $page_layout]);
70	$buildable->saveSources();
71	// Clearing plugin cache seems enough to get the new layout.
72	// @todo It looks very costly. Check if it is still needed.
73	$this->pluginCacheClearer->clearCachedDefinitions();
74	}
75
76	}

---

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DisplayBuilderSubscriber->__construct

21	private CachedDiscoveryClearerInterface $pluginCacheClearer,
22	private EntityTypeManagerInterface $entityTypeManager,
23	private DisplayBuildablePluginManager $displayBuildableManager,
24	) {}

DisplayBuilderSubscriber->getSubscribedEvents

31	DisplayBuilderEvents::ON_SAVE => 'onSave',
32	];
33	}

DisplayBuilderSubscriber->onSave

41	public function onSave(DisplayBuilderEvent $event): void {
42	$builder_id = $event->getBuilderId();
43	$contexts = $event->getData();
44	$params = PageLayout::checkInstanceId($builder_id);
45
46	if (!$params) {

47

return;

54	$instance = $this->entityTypeManager->getStorage('display_builder_instance')->load($builder_id);
55
56	if (!$instance->hasSaveContextsRequirement(PageLayout::getContextRequirement(), $contexts)) {

57

return;

59	$page_layout_id = $params['page_layout'] ?? NULL;
60
61	if (!$page_layout_id) {

64

return;

67	$page_layout = $this->entityTypeManager->getStorage('page_layout')->load($page_layout_id);
68	/** @var \Drupal\display_builder\DisplayBuildableInterface $buildable */
69	$buildable = $this->displayBuildableManager->createInstance('page_layout', ['entity' => $page_layout]);
70	$buildable->saveSources();
71	// Clearing plugin cache seems enough to get the new layout.
72	// @todo It looks very costly. Check if it is still needed.
73	$this->pluginCacheClearer->clearCachedDefinitions();
74	}