first commit

web/core/themes/classy/classy.theme

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * @file
+ * Functions to support theming in the Classy theme.
+ */
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Form\ViewsForm;
+
+/**
+ * Implements hook_preprocess_links__media_library_menu().
+ *
+ * This targets the menu of available media types in the media library's modal
+ * dialog.
+ *
+ * @todo Do this in the relevant template once
+ *   https://www.drupal.org/project/drupal/issues/3088856 is resolved.
+ */
+function classy_preprocess_links__media_library_menu(array &$variables) {
+  foreach ($variables['links'] as &$link) {
+    $link['link']['#options']['attributes']['class'][] = 'media-library-menu__link';
+  }
+}
+
+/**
+ * Implements hook_form_alter().
+ */
+function classy_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
+  $form_object = $form_state->getFormObject();
+  if ($form_object instanceof ViewsForm && strpos($form_object->getBaseFormId(), 'views_form_media_library') === 0) {
+    $form['#attributes']['class'][] = 'media-library-views-form';
+  }
+}
+
+/**
+ * Implements hook_preprocess_image_widget().
+ */
+function classy_preprocess_image_widget(array &$variables) {
+  $data = &$variables['data'];
+  if (isset($data['preview']['#access']) && $data['preview']['#access'] === FALSE) {
+    unset($data['preview']);
+  }
+}