import Foundation import QuartzCore public protocol UIScrollViewDelegate { } open class UIScrollView: UIView { public var contentOffset: CGPoint { get { return self.bounds.origin } set(value) { self.bounds.origin = value } } public var contentSize: CGSize = CGSize() { didSet { } } public var alwaysBounceVertical: Bool = false public var alwaysBounceHorizontal: Bool = false public func setContentOffset(_ contentOffset: CGPoint, animated: Bool) { self.contentOffset = contentOffset } }