1	<?php
2
3	declare(strict_types=1);
4
5	namespace Drupal\display_builder\Form;
6
7	use Drupal\Core\Form\FormBase;
8	use Drupal\Core\Form\FormStateInterface;
9	use Drupal\display_builder\Island\IslandInterface;
10	use Drupal\display_builder\Island\IslandPluginManagerInterface;
11	use Drupal\display_builder\Island\IslandWithFormInterface;
12	use Symfony\Component\DependencyInjection\ContainerInterface;
13
14	/**
15	* Provides a display builder form for island plugin.
16	*/
17	final class IslandFormBase extends FormBase {
18
19	/**
20	* Constructs a new IslandFormBase.
21	*
22	* @param \Drupal\display_builder\Island\IslandPluginManagerInterface|null $islandManager
23	*   The island plugin manager. NULL when form is rebuilt from cache without
24	*   going through the container — getIslandManager() handles the fallback.
25	*/
26	public function __construct(
27	private ?IslandPluginManagerInterface $islandManager = NULL,
28	) {}
29
30	/**
31	* {@inheritdoc}
32	*/
33	public static function create(ContainerInterface $container): static {
34	return new self(
35	$container->get('plugin.manager.db_island'),
36	);
37	}
38
39	/**
40	* {@inheritdoc}
41	*/
42	public function getFormId(): string {
43	return 'display_builder_island';
44	}
45
46	/**
47	* {@inheritdoc}
48	*/
49	public function buildForm(array $form, FormStateInterface $form_state): array {
50	$island_args = $form_state->getBuildInfo()['args'][0];
51	$plugin = $this->getPlugin($island_args);
52
53	if (!$plugin instanceof IslandWithFormInterface) {
54	return $form;
55	}
56	$plugin->setBuilderId($island_args['builder_id']);
57	$plugin->buildForm($form, $form_state);
58
59	return $form;
60	}
61
62	/**
63	* {@inheritdoc}
64	*/
65	public function validateForm(array &$form, FormStateInterface $form_state): void {
66	$island_args = $form_state->getBuildInfo()['args'][0];
67	$plugin = $this->getPlugin($island_args);
68
69	if (!$plugin instanceof IslandWithFormInterface) {
70	return;
71	}
72	$plugin->validateForm($form, $form_state);
73	}
74
75	/**
76	* {@inheritdoc}
77	*/
78	public function submitForm(array &$form, FormStateInterface $form_state): void {
79	$island_args = $form_state->getBuildInfo()['args'][0];
80	$plugin = $this->getPlugin($island_args);
81
82	if (!$plugin instanceof IslandWithFormInterface) {
83	return;
84	}
85	$plugin->submitForm($form, $form_state);
86	}
87
88	/**
89	* Gets an island plugin instance from form args.
90	*
91	* @param array $args
92	*   Arguments from form_state which allow to load plugin.
93	*
94	* @return \Drupal\display_builder\Island\IslandInterface
95	*   The Island plugin.
96	*/
97	protected function getPlugin(array $args): IslandInterface {
98	return $this->getIslandManager()->createInstance($args['island_id'], $args['instance']);
99	}
100
101	/**
102	* Gets the island plugin manager, falling back to the container.
103	*
104	* FormBase subclasses may be rebuilt from cache without going through
105	* create(), leaving injected properties uninitialized.
106	*
107	* @return \Drupal\display_builder\Island\IslandPluginManagerInterface
108	*   The island plugin manager.
109	*
110	* @phpcs:disable DrupalPractice.Objects.GlobalDrupal.GlobalDrupal
111	*/
112	private function getIslandManager(): IslandPluginManagerInterface {
113	// @phpstan-ignore nullCoalesce.property
114	return $this->islandManager ??= \Drupal::service('plugin.manager.db_island');
115	}
116
117	}

---

Branches

Below are the source code lines that represent each code branch as identified by Xdebug. Please note a branch is not necessarily coterminous with a line, a line may contain multiple branches and therefore show up more than once. Please also be aware that some branches may be implicit rather than explicit, e.g. an if statement always has an else as part of its logical flow even if you didn't write one.

IslandFormBase->__construct

27	private ?IslandPluginManagerInterface $islandManager = NULL,
28	) {}

IslandFormBase->buildForm

49	public function buildForm(array $form, FormStateInterface $form_state): array {
50	$island_args = $form_state->getBuildInfo()['args'][0];
51	$plugin = $this->getPlugin($island_args);
52
53	if (!$plugin instanceof IslandWithFormInterface) {

54	return $form;

56	$plugin->setBuilderId($island_args['builder_id']);
57	$plugin->buildForm($form, $form_state);
58
59	return $form;
60	}

IslandFormBase->create

33	public static function create(ContainerInterface $container): static {
34	return new self(
35	$container->get('plugin.manager.db_island'),
36	);
37	}

IslandFormBase->getFormId

43	return 'display_builder_island';
44	}

IslandFormBase->getIslandManager

114	return $this->islandManager ??= \Drupal::service('plugin.manager.db_island');
115	}

IslandFormBase->getPlugin

97	protected function getPlugin(array $args): IslandInterface {
98	return $this->getIslandManager()->createInstance($args['island_id'], $args['instance']);
99	}

IslandFormBase->submitForm

78	public function submitForm(array &$form, FormStateInterface $form_state): void {
79	$island_args = $form_state->getBuildInfo()['args'][0];
80	$plugin = $this->getPlugin($island_args);
81
82	if (!$plugin instanceof IslandWithFormInterface) {

83

return;

85	$plugin->submitForm($form, $form_state);
86	}

IslandFormBase->validateForm

65	public function validateForm(array &$form, FormStateInterface $form_state): void {
66	$island_args = $form_state->getBuildInfo()['args'][0];
67	$plugin = $this->getPlugin($island_args);
68
69	if (!$plugin instanceof IslandWithFormInterface) {

70

return;

72	$plugin->validateForm($form, $form_state);
73	}