ios autorotation + status bar boilerplate for swift

Autorotation.swift

public class ViewController : UIViewController
{
#if os(iOS)
    public override func shouldAutorotate() -> Bool {
        return false
    }

    public override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        return .Portrait
    }
    
    public override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
        return .Portrait
    }

    public override func preferredStatusBarStyle() -> UIStatusBarStyle {
        return .LightContent
    }
#endif
}



public class NavigationController : UINavigationController, UIGestureRecognizerDelegate
{

#if os(iOS)

    override func viewDidLoad() {
        super.viewDidLoad()

        self.interactivePopGestureRecognizer?.delegate = self
    }

    func gestureRecognizerShouldBegin(gestureRecognizer: UIGestureRecognizer) -> Bool {
        return self.topViewController == self.viewControllers.last && self.viewControllers.count > 1
    }

    override func shouldAutorotate() -> Bool {
        if let shouldRotate = self.topViewController?.shouldAutorotate() {
            return shouldRotate
        }
        return super.shouldAutorotate()
    }
    
    override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        if let orientation = self.topViewController?.supportedInterfaceOrientations() {
            return orientation
        }
        return super.supportedInterfaceOrientations()
    }

    override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
        if let orientation = self.topViewController?.preferredInterfaceOrientationForPresentation() {
            return orientation
        }
        return super.preferredInterfaceOrientationForPresentation()
    }
    
    override func preferredStatusBarStyle() -> UIStatusBarStyle {
        if let style = self.topViewController?.preferredStatusBarStyle() {
            return style
        }
        return super.preferredStatusBarStyle()
    }

#endif

}


public extension UINavigationController
{
    public func pushViewController(viewController: UIViewController, animated: Bool, completion: VoidBlock) {
        CATransaction.begin()
        CATransaction.setCompletionBlock(completion)
        self.pushViewController(viewController, animated: animated)
        CATransaction.commit()
    }
}


public class TabBarController : UITabBarController
{

#if os(iOS)

    public override func shouldAutorotate() -> Bool {
        if let viewController = self.viewControllers?[self.selectedIndex] {
            return viewController.shouldAutorotate()
        }
        return super.shouldAutorotate()
    }
    
    public override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        if let viewController = self.viewControllers?[self.selectedIndex] {
            return viewController.supportedInterfaceOrientations()
        }
        return super.supportedInterfaceOrientations()
    }
    
    public override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
        if let viewController = self.viewControllers?[self.selectedIndex] {
            return viewController.preferredInterfaceOrientationForPresentation()
        }
        return super.preferredInterfaceOrientationForPresentation()
    }
    
    public override func preferredStatusBarStyle() -> UIStatusBarStyle {
        if let viewController = self.viewControllers?[self.selectedIndex] {
            return viewController.preferredStatusBarStyle()
        }
        return super.preferredStatusBarStyle()
    }

#endif

}