1 files changed, 25 insertions, 0 deletions
diff --git a/app/assets/javascripts/pages/admin/application_settings/account_and_limits.js b/app/assets/javascripts/pages/admin/application_settings/account_and_limits.js
new file mode 100644
index 00000000000..7281f907ec7
--- /dev/null
+++ b/app/assets/javascripts/pages/admin/application_settings/account_and_limits.js
@@ -0,0 +1,25 @@
+import { __ } from '~/locale';
+
+export const PLACEHOLDER_USER_EXTERNAL_DEFAULT_TRUE = __('Regex pattern');
+export const PLACEHOLDER_USER_EXTERNAL_DEFAULT_FALSE = __('To define internal users, first enable new users set to external');
+
+function setUserInternalRegexPlaceholder(checkbox) {
+  const userInternalRegex = document.getElementById('application_setting_user_default_internal_regex');
+  if (checkbox && userInternalRegex) {
+    if (checkbox.checked) {
+      userInternalRegex.readOnly = false;
+      userInternalRegex.placeholder = PLACEHOLDER_USER_EXTERNAL_DEFAULT_TRUE;
+    } else {
+      userInternalRegex.readOnly = true;
+      userInternalRegex.placeholder = PLACEHOLDER_USER_EXTERNAL_DEFAULT_FALSE;
+    }
+  }
+}
+
+export default function initUserInternalRegexPlaceholder() {
+  const checkbox = document.getElementById('application_setting_user_default_external');
+  setUserInternalRegexPlaceholder(checkbox);
+  checkbox.addEventListener('change', () => {
+    setUserInternalRegexPlaceholder(checkbox);
+  });
+}