public function setup_sidebar_options()
{
global $wp_registered_sidebars;
$custom_sidebars = $this->get_custom_sidebars();
// Add field options
$sidebars = array();
foreach ($wp_registered_sidebars as $sidebar) {
$sidebars[] = $sidebar['name'];
}
$options = array_merge($sidebars, $custom_sidebars);
$options = array_combine($options, $options);
$this->add_options($options);
}