[REF] Use events for CMS resource loading

CRM/Utils/Hook.php

@@ -2386,9 +2386,6 @@ public static function batchItems(&$results, &$items) {
    * @param string $region
    */
   public static function coreResourceList(&$list, $region) {
-    // First allow the cms integration to add to the list
-    CRM_Core_Config::singleton()->userSystem->appendCoreResources($list);
-
     self::singleton()->invoke(['list', 'region'], $list, $region,
       self::$_nullObject, self::$_nullObject, self::$_nullObject, self::$_nullObject,
       'civicrm_coreResourceList'

CRM/Utils/System.php

@@ -51,6 +51,7 @@
  * @method static int getLoggedInUfID() Get current logged in user id.
  * @method static setHttpHeader(string $name, string $value) Set http header.
  * @method static array synchronizeUsers() Create CRM contacts for all existing CMS users.
+ * @method static appendCoreResources(\Civi\Core\Event\GenericHookEvent $e) Callback for hook_civicrm_coreResourceList.
  */
 class CRM_Utils_System {
 

CRM/Utils/System/Backdrop.php

@@ -1042,11 +1042,11 @@ private function parseBackdropSiteNameFromRequest($flagFile = '') {
   /**
    * Append Backdrop CSS and JS to coreResourcesList.
    *
-   * @param array $list
+   * @param \Civi\Core\Event\GenericHookEvent $e
    */
-  public function appendCoreResources(&$list) {
-    $list[] = 'css/backdrop.css';
-    $list[] = 'js/crm.backdrop.js';
+  public function appendCoreResources(\Civi\Core\Event\GenericHookEvent $e) {
+    $e->list[] = 'css/backdrop.css';
+    $e->list[] = 'js/crm.backdrop.js';
   }
 
 }

CRM/Utils/System/Base.php

@@ -914,9 +914,9 @@ public function logger($message) {
   /**
    * Append to coreResourcesList.
    *
-   * @param array $list
+   * @param \Civi\Core\Event\GenericHookEvent $e
    */
-  public function appendCoreResources(&$list) {
+  public function appendCoreResources(\Civi\Core\Event\GenericHookEvent $e) {
   }
 
   /**

CRM/Utils/System/Drupal8.php

@@ -667,10 +667,10 @@ public function getCurrentLanguage() {
   /**
    * Append Drupal8 js to coreResourcesList.
    *
-   * @param array $list
+   * @param \Civi\Core\Event\GenericHookEvent $e
    */
-  public function appendCoreResources(&$list) {
-    $list[] = 'js/crm.drupal8.js';
+  public function appendCoreResources(\Civi\Core\Event\GenericHookEvent $e) {
+    $e->list[] = 'js/crm.drupal8.js';
   }
 
 }

CRM/Utils/System/WordPress.php

@@ -801,10 +801,10 @@ public function getUserRecordUrl($contactID) {
   /**
    * Append WP js to coreResourcesList.
    *
-   * @param array $list
+   * @param \Civi\Core\Event\GenericHookEvent $e
    */
-  public function appendCoreResources(&$list) {
-    $list[] = 'js/crm.wordpress.js';
+  public function appendCoreResources(\Civi\Core\Event\GenericHookEvent $e) {
+    $e->list[] = 'js/crm.wordpress.js';
   }
 
   /**

Civi/Core/Container.php

@@ -321,6 +321,7 @@ public function createEventDispatcher($container) {
     $dispatcher->addListener('hook_civicrm_buildAsset', ['\CRM_Utils_VisualBundle', 'buildAssetJs']);
     $dispatcher->addListener('hook_civicrm_buildAsset', ['\CRM_Utils_VisualBundle', 'buildAssetCss']);
     $dispatcher->addListener('hook_civicrm_buildAsset', ['\CRM_Core_Resources', 'renderMenubarStylesheet']);
+    $dispatcher->addListener('hook_civicrm_coreResourceList', ['\CRM_Utils_System', 'appendCoreResources']);
     $dispatcher->addListener('civi.dao.postInsert', ['\CRM_Core_BAO_RecurringEntity', 'triggerInsert']);
     $dispatcher->addListener('civi.dao.postUpdate', ['\CRM_Core_BAO_RecurringEntity', 'triggerUpdate']);
     $dispatcher->addListener('civi.dao.postDelete', ['\CRM_Core_BAO_RecurringEntity', 'triggerDelete']);