class SUTabBarController: UITabBarController, TSSlidingUpPanelStateDelegate {
    @IBOutlet weak var suTabBar: UITabBar!
    let slideUpPanelManager: TSSlidingUpPanelManager = TSSlidingUpPanelManager.with
    .
    .
    .
}

let slidingUpVC = (storyboard?.instantiateViewController(withIdentifier: "SUSlidingUp"))! as! SUSlidingUpVC
let slidingUpView = slidingUpVC.view

slideUpPanelManager.initPanelWithTabBar(inView: view, tabBar: suTabBar, slidingUpPanelView: slidingUpVC.view,   slidingUpPanelHeaderSize: 49)

enum SLIDE_UP_PANEL_STATE {
    case CLOSED
    case OPENED
    case DOCKED
}

// slidingUpPanelNewState: new state
// yPos: Y poisition of the panel at new state
func slidingUpPanelStateChanged(slidingUpPanelNewState: SLIDE_UP_PANEL_STATE, yPos: CGFloat)

class SUTabBarController: ..., TSSlidingUpPanelStateDelegate {
...
    override func viewDidLoad() {
      ...
      slideUpPanelManager.slidingUpPanelStateDelegate = self
      ...
    }
    func slidingUpPanelStateChanged(slidingUpPanelNewState: SLIDE_UP_PANEL_STATE, yPos: CGFloat) {
      ...
    }
}

// withDuration: how long does the animation take
// slidingUpCurrentPanelState: at what state the animation is going to take place
// yPos: at what Y Position the animation is going to take place
func slidingUpPanelAnimationStart(withDuration: TimeInterval, slidingUpCurrentPanelState: SLIDE_UP_PANEL_STATE, yPos: CGFloat)

// withDuration: how long did it take
// slidingUpCurrentPanelState: at what state the animation is finished
// yPos: at what Y Position the animation is finished
func slidingUpPanelAnimationFinished(withDuration: TimeInterval, slidingUpCurrentPanelState: SLIDE_UP_PANEL_STATE, yPos: CGFloat)

class ViewController: UIViewController,...,TSSlidingUpPanelAnimationDelegate {
...
    override func viewDidLoad() {
        ...
        slideUpPanelManager.slidingUpPanelAnimationDelegate = self
        ...
    }
    
    func slidingUpPanelAnimationStart(withDuration: TimeInterval, slidingUpCurrentPanelState: SLIDE_UP_PANEL_STATE, yPos: CGFloat) {
        ...
    }

    func slidingUpPanelAnimationFinished(withDuration: TimeInterval, slidingUpCurrentPanelState: SLIDE_UP_PANEL_STATE, yPos: CGFloat) {
        ...
    }
...
}

// when panel is began to be dragging by user
// startYPos at what Y Position user began to drag the panel
func slidingUpPanelStartDragging(startYPos: CGFloat)

// When panel in being dragged by user
// yPos: the center position of the panel
func slidingUpPanelDraggingVertically(yPos: CGFloat)

// When user is done by dragging
// Delta: if it's positive , it means panel was being dragged to the bottom of the screen
//        if it's negative , it means panel was being dragged to the top of the screen
func slidingUpPanelDraggingFinished(delta:  CGFloat)

class ViewController: UIViewController,...,TSSlidingUpPanelDraggingDelegate {

    override func viewDidLoad() {
        ...
        slideUpPanelManager.slidingUpPanelDraggingDelegate = self
        ...
    }

    func slidingUpPanelStartDragging(startYPos: CGFloat) {
        ...
    }

    func slidingUpPanelDraggingVertically(yPos: CGFloat) {
        ...
    }
    func slidingUpPanelDraggingFinished(delta:  CGFloat) {
        ...
    } 
}