public enum JSLockerPresentationDirection: Int {
    case down
    case up
}

public enum JSLockerResizingBehavior: Int {
    case none
    case dismiss
    case dismissOrExpand
}

@objc public protocol JSLockerControllerDelegate: class {
    
    @objc optional func lockerControllerDidChangeExpandedState(_ controller: JSLockerController)
    @objc optional func lockerControllerWillDismiss(_ controller: JSLockerController)
    @objc optional func lockerControllerDidDismiss(_ controller: JSLockerController)
}

public init(sourceView: UIView, sourceRect: CGRect, origin: CGFloat = -1.0, direction: JSLockerPresentationDirection)

public init(barButtonItem: UIBarButtonItem, origin: CGFloat = -1.0, direction: JSLockerPresentationDirection)