added config

caption_linker.links.menu.yml

@@ -0,0 +1,7 @@
+caption_linker.caption_linker_settings:
+  title: 'Caption Linker settings'
+  description: 'Configure Caption Linker.'
+  parent: system.admin_config_system
+  route_name: caption_linker.caption_linker_settings
+  weight: 100
+

caption_linker.module

@@ -2,6 +2,7 @@
 
 /**
  * @file
+ * Caption Linker module hooks.
  */
 
 use Drupal\Core\Entity\EntityInterface;
@@ -12,18 +13,42 @@ use Drupal\node\NodeInterface;
  * Implements hook_entity_insert().
  */
 function caption_linker_entity_insert(EntityInterface $entity): void {
-  if ($entity instanceof MediaInterface) {
-    _caption_linker_link_caption_if_possible($entity);
-  }
+  _caption_linker_handle_media_change($entity);
 }
 
 /**
  * Implements hook_entity_update().
  */
 function caption_linker_entity_update(EntityInterface $entity): void {
-  if ($entity instanceof MediaInterface) {
-    _caption_linker_link_caption_if_possible($entity);
+  _caption_linker_handle_media_change($entity);
+}
+
+/**
+ * Shared handler for media insert/update.
+ */
+function _caption_linker_handle_media_change(EntityInterface $entity): void {
+  if (!$entity instanceof MediaInterface) {
+    return;
   }
+
+  if (!_caption_linker_is_hook_enabled()) {
+    return;
+  }
+
+  _caption_linker_link_caption_if_possible($entity);
+}
+
+/**
+ * Returns TRUE if caption linking via hooks is enabled in config.
+ */
+function _caption_linker_is_hook_enabled(): bool {
+  static $enabled;
+
+  if (!isset($enabled)) {
+    $enabled = (bool) \Drupal::config('caption_linker.settings')->get('use_hook');
+  }
+
+  return $enabled;
 }
 
 /**
@@ -32,11 +57,14 @@ function caption_linker_entity_update(EntityInterface $entity): void {
 function _caption_linker_link_caption_if_possible(MediaInterface $media): void {
   /** @var \Drupal\islandora\IslandoraUtils $islandora_utils */
   $islandora_utils = \Drupal::service('islandora.utils');
+
   /** @var \Drupal\caption_linker\Service\CaptionLinker $caption_linker */
   $caption_linker = \Drupal::service('caption_linker.caption_linker');
 
   $node = $islandora_utils->getParentNode($media);
-  if ($node instanceof NodeInterface) {
-    $caption_linker->linkCaption($node);
+  if (!$node instanceof NodeInterface) {
+    return;
   }
+
+  $caption_linker->linkCaption($node);
 }

caption_linker.routing.yml

@@ -0,0 +1,7 @@
+caption_linker.caption_linker_settings:
+  path: '/admin/config/system/caption-linker-settings'
+  defaults:
+    _title: 'Caption Linker settings'
+    _form: 'Drupal\caption_linker\Form\CaptionLinkerSettingsForm'
+  requirements:
+    _permission: 'administer site configuration'

src/Form/CaptionLinkerSettingsForm.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\caption_linker\Form;
+
+use Drupal\Core\Form\ConfigFormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Configure Caption Linker settings for this site.
+ */
+final class CaptionLinkerSettingsForm extends ConfigFormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId(): string {
+    return 'caption_linker_settings_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEditableConfigNames(): array {
+    return ['caption_linker.settings'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $config = $this->config('caption_linker.settings');
+    $use_hook = $config->get('use_hook');
+    $form['use_hook'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Automatically link captions to Audio or Video Media'),
+      '#description' => $this->t("If checked, a media tagged <strong>Transcript</strong> will be automatically linked to an AblePlayer Audio or Video Media."),
+      '#default_value' => $use_hook,
+    ];
+
+    return parent::buildForm($form, $form_state);
+  }
+
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $use_hook = $form_state->getValue('use_hook');
+    $this->config('caption_linker.settings')
+      ->set('use_hook', $use_hook)
+      ->save();
+  }
+
+}