/**
* Main WP_Email_Delivery Instance
*
* Ensures only one instance of WP_Email_Delivery is loaded or can be loaded.
*
* @since 1.0.0
* @static
* @see WP_Email_Delivery()
* @return Main WP_Email_Delivery instance
*/
public static function instance($file = '', $version = '1.0.0')
{
if (is_null(self::$_instance)) {
self::$_instance = new self($file, $version);
} else {
return self::$_instance;
}
self::$_instance->setup_constants();
if (is_null(self::$_instance->settings)) {
self::$_instance->settings = WP_Email_Delivery_Settings::instance(self::$_instance);
}
if (is_null(self::$_instance->connections)) {
self::$_instance->connections = WP_Email_Delivery_Connections::instance(self::$_instance);
}
return self::$_instance;
}
/**
* Main WP_Email_Delivery_Connections Instance
*
* Ensures only one instance of WP_Email_Delivery_Connections is loaded or can be loaded.
*
* @since 1.0.0
* @static
* @see WP_Email_Delivery()
* @return Main WP_Email_Delivery_Connections instance
*/
public static function instance($parent)
{
if (is_null(self::$_instance)) {
self::$_instance = new self($parent);
}
return self::$_instance;
}
