comparison core/lib/Drupal/Core/Block/BlockBase.php @ 17:129ea1e6d783

Update, including to Drupal core 8.6.10

 
 namespace Drupal\Core\Block;
 
 use Drupal\Core\Access\AccessResult;
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Messenger\MessengerTrait;
 use Drupal\Core\Plugin\ContextAwarePluginAssignmentTrait;
 use Drupal\Core\Plugin\ContextAwarePluginBase;
-use Drupal\Component\Utility\Unicode;
 use Drupal\Component\Utility\NestedArray;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\Core\Plugin\PluginWithFormsInterface;
 use Drupal\Core\Plugin\PluginWithFormsTrait;
+use Drupal\Core\Render\PreviewFallbackInterface;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\Component\Transliteration\TransliterationInterface;
 
 /**
  * Defines a base block implementation that most blocks plugins will extend.

  * block settings, and handling for general user-defined block visibility
  * settings.
  *
  * @ingroup block_api
  */
-abstract class BlockBase extends ContextAwarePluginBase implements BlockPluginInterface, PluginWithFormsInterface {
+abstract class BlockBase extends ContextAwarePluginBase implements BlockPluginInterface, PluginWithFormsInterface, PreviewFallbackInterface {
 
   use ContextAwarePluginAssignmentTrait;
+  use MessengerTrait;
   use PluginWithFormsTrait;
 
   /**
    * The transliteration service.
    *

 
     // @todo This is basically the same as what is done in
     //   \Drupal\system\MachineNameController::transliterate(), so it might make
     //   sense to provide a common service for the two.
     $transliterated = $this->transliteration()->transliterate($admin_label, LanguageInterface::LANGCODE_DEFAULT, '_');
-    $transliterated = Unicode::strtolower($transliterated);
+    $transliterated = mb_strtolower($transliterated);
 
     $transliterated = preg_replace('@[^a-z0-9_.]+@', '', $transliterated);
 
     return $transliterated;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getPreviewFallbackString() {
+    return $this->t('Placeholder for the "@block" block', ['@block' => $this->label()]);
   }
 
   /**
    * Wraps the transliteration service.
    *