#3259797 Add blockAccess to control block visibility if Klaro not enabled

Closes #3259797

src/Plugin/Block/PreferencesDialog.php

@@ -2,9 +2,11 @@
 
 namespace Drupal\simple_klaro\Plugin\Block;
 
+use Drupal\Core\Access\AccessResult;
 use Drupal\Core\Block\BlockBase;
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
@@ -58,14 +60,21 @@ class PreferencesDialog extends BlockBase implements ContainerFactoryPluginInter
    */
   public function build() {
     $config = $this->configFactory->get('simple_klaro.settings');
-    $klaro_enabled = $config->get('enabled');
-    if (!$klaro_enabled) {
-      return FALSE;
-    }
-
     return [
       '#markup' => '<a href="#" id="klaro-preferences">' . $config->get('preferences') . '</a>',
     ];
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  protected function blockAccess(AccountInterface $account) {
+    $config = $this->configFactory->get('simple_klaro.settings');
+    $klaro_enabled = $config->get('enabled');
+    if (!$klaro_enabled) {
+      return AccessResult::forbidden();
+    }
+    return parent::blockAccess($account);
+  }
+
 }