ISTWCMS-5544 Refactor add a warning message when deleting content

ISTWCMS-5544 Refactor using OO way to add a warning message when deleting content

src/EventSubscriber/UwDeleteFormEventSubscriber.php

+<?php
+
+namespace Drupal\uw_cfg_common\EventSubscriber;
+
+use Drupal\Core\Session\AccountProxyInterface;
+use Drupal\core_event_dispatcher\Event\Form\FormAlterEvent;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\core_event_dispatcher\FormHookEvents;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * UW content type delete form event subscriber.
+ */
+class UwDeleteFormEventSubscriber implements EventSubscriberInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * Current user.
+   *
+   * @var \Drupal\Core\Session\AccountProxyInterface
+   */
+  protected $currentUser;
+
+  /**
+   * Default constructor.
+   *
+   * @param \Drupal\Core\Session\AccountProxyInterface $currentUser
+   *   Current user.
+   */
+  public function __construct(AccountProxyInterface $currentUser) {
+    $this->currentUser = $currentUser;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    return [
+      FormHookEvents::FORM_ALTER => 'alterForm',
+    ];
+  }
+
+  /**
+   * Alter form.
+   *
+   * @param \Drupal\core_event_dispatcher\Event\Form\FormAlterEvent $event
+   *   The event.
+   */
+  public function alterForm(FormAlterEvent $event): void {
+    $form = &$event->getForm();
+
+    // Define all names in an array.
+    $names = [
+      'ct_names' => [
+        'uw_ct_blog',
+        'uw_ct_contact',
+        'uw_ct_catalog_item',
+        'uw_ct_event',
+        'uw_ct_expand_collapse_group',
+        'uw_ct_news_item',
+        'uw_ct_opportunity',
+        'uw_ct_profile',
+        'uw_ct_project',
+        'uw_ct_service',
+        'uw_ct_sidebar',
+        'uw_ct_site_footer',
+        'uw_ct_web_page',
+      ],
+      'vocab_names' => [
+        'uw_vocab_blog_tags',
+        'uw_vocab_contact_group',
+        'uw_vocab_audience',
+        'uw_vocab_catalog_categories',
+        'uw_vocab_catalogs',
+        'uw_tax_event_tags',
+        'uw_tax_event_type',
+        'uw_vocab_news_tags',
+        'uw_vocab_profile_type',
+        'uw_vocab_project_roles',
+        'uw_vocab_project_topics',
+        'uw_vocab_service_categories',
+      ],
+      'media_names' => [
+        'uw_mt_file',
+        'uw_mt_icon',
+        'uw_mt_image',
+        'uw_mt_local_video',
+        'uw_mt_remote_video',
+        'uw_mt_vimeo_banner_video',
+      ],
+    ];
+
+    // Loop all names in array.
+    foreach ($names as $key => $type_names) {
+      foreach ($type_names as $name) {
+        $custom_waring_message = $this->t('CAUTION. This will permanently delete this piece of content; this action cannot be undone. If anything references this content, it may cause visual or structural issues on that page. Make sure you have removed or updated all references before deleting.');
+
+        // Use custom warning message for deleting nodes, terms and medias.
+        // The user has 'delete any' and 'delete own' permissions.
+        if ($key == 'ct_names') {
+          if (($form['#form_id'] == 'node_' . $name . '_delete_form') &&
+            ($this->currentUser->hasPermission('delete any ' . $name . ' content') ||
+              $this->currentUser->hasPermission('delete own ' . $name . ' content'))) {
+            $form['description']['#markup'] = $custom_waring_message;
+            break;
+          }
+        }
+        // The user has 'delete terms' permission.
+        if ($key == 'vocab_names') {
+          if (($form['#form_id'] == 'taxonomy_term_' . $name . '_delete_form') &&
+            $this->currentUser->hasPermission('delete terms in ' . $name)) {
+            $form['description']['#markup'] = $custom_waring_message;
+            break;
+          }
+        }
+        // The user has 'delete any' permission.
+        if ($key == 'media_names') {
+          if (($form['#form_id'] == 'media_' . $name . '_delete_form') &&
+            ($this->currentUser->hasPermission('delete any ' . $name . ' media') ||
+              $this->currentUser->hasPermission('delete own ' . $name . ' media'))) {
+            $form['description']['#markup'] = $custom_waring_message;
+            break;
+          }
+        }
+      }
+    }
+  }
+
+}