/**
* Main Instance
*
* @staticvar array $instance
* @return The one true instance
*/
public static function instance()
{
if (!isset(self::$instance)) {
self::$instance = new self();
self::$instance->actions();
self::$instance->parent = CUSTOMLOGIN();
}
return self::$instance;
}
/**
* Display Upgrade Notices
*
* @access private
* @since 3.0.3
* @return void
*/
public function upgrade_notices()
{
$show_upgrade_notice = false;
// Version < 2.0
if (false !== get_option('custom_login_settings', false)) {
$show_upgrade_notice = true;
}
// Version > 2.0
if (false !== get_option('custom_login', false)) {
$show_upgrade_notice = true;
}
if ($show_upgrade_notice && '' === get_option(CUSTOM_LOGIN_OPTION . '_general', '')) {
remove_action('admin_notice', array(CL_Settings_Upgrade::instance(), 'upgrade_notices'));
printf('<div class="error"><p>' . esc_html__('Custom Login has detected old settings. If you wish to use them please run %sthis%s script before making any changes below.', CUSTOM_LOGIN_DIRNAME) . '</p></div>', '<a href="' . esc_url(admin_url('options.php?page=custom-login-upgrades')) . '">', '</a>');
}
}
