function FormHooks::formSystemThemeSettingsAlter

Implement hook form_system_theme_settings_alter().

Attributes

File

core/themes/admin/src/Hook/FormHooks.php, line 372

Class

FormHooks

Provides form related hook implementations.

Namespace

Code

public function formSystemThemeSettingsAlter(array &$form) : void {
  if (!isset($form['config_key']['#value']) || $form['config_key']['#value'] !== 'admin.settings') {
    return;
  }
  $settings = Settings::getInstance();
  // Move default theme settings to bottom.
  $form['logo']['#open'] = FALSE;
  $form['logo']['#weight'] = 97;
  $form['favicon']['#open'] = FALSE;
  $form['favicon']['#weight'] = 98;
  $form['theme_settings']['#open'] = FALSE;
  $form['theme_settings']['#weight'] = 99;
  // General settings.
  $form['custom_settings'] = [
    '#type' => 'details',
    '#open' => TRUE,
    '#title' => $this->t('Settings'),
  ] + $settings->getSettingsForm();
  // Allow user settings.
  $form['custom_settings']['show_user_theme_settings'] = [
    '#type' => 'checkbox',
    '#title' => $this->t('Users can override admin settings'),
    '#description' => $this->t('Expose the admin theme settings to users.'),
    '#default_value' => $settings->getDefault('show_user_theme_settings'),
  ];
  // Add handler.
  $form['#validate'][] = [
    __CLASS__,
    'formSystemThemeSettingsAlterValidate',
  ];
  $form['#submit'][] = [
    __CLASS__,
    'formSystemThemeSettingsAlterSubmit',
  ];
  // Attach custom library.
  $form['#attached']['library'][] = 'admin/settings';
}