OEL-543: Styling bootstrap forms.

oe_whitelabel.theme

@@ -7,6 +7,8 @@
 
 declare(strict_types = 1);
 
+use Drupal\Core\Form\FormStateInterface;
+
 /**
  * Implements hook__preprocess_links__language_block().
  */
@@ -64,3 +66,25 @@ function oe_whitelabel_preprocess_links__language_block(&$variables) {
     ],
   ];
 }
+
+/**
+ * Implements hook_form_alter().
+ */
+function oe_whitelabel_form_alter(&$form, FormStateInterface $form_state, $form_id) {
+  if (isset($form['actions'])) {
+    $form['actions']['#attributes']['class'][] = 'mt-4';
+  }
+  if (isset($form['actions']['submit'])) {
+    $form['actions']['submit']['#attributes']['class'][] = 'me-2';
+    array_push($form['actions']['submit']['#attributes']['class'], 'btn', 'btn-primary');
+    if (($key = array_search('btn-secondary', $form['actions']['submit']['#attributes']['class'], TRUE)) !== FALSE) {
+      unset($form['actions']['submit']['#attributes']['class'][$key]);
+    }
+  }
+  $form['actions']['submit']['#attributes']['class'] = array_unique($form['actions']['submit']['#attributes']['class']);
+  if (isset($form['actions']['reset'])) {
+    $form['actions']['reset']['#attributes']['class'][] = 'btn';
+    $form['actions']['reset']['#attributes']['class'][] = 'btn-secondary';
+  }
+  $form['actions']['reset']['#attributes']['class'] = array_unique($form['actions']['reset']['#attributes']['class']);
+}