import Arale

var araleHeaderView: HeaderView!

...

func viewDidLoad() {
  super.viewDidLoad()
  let araleHeaderView = HeaderView(minHeight: 256.0)
  araleHeaderView.delegate = self
  araleHeaderView.dataSource = self
  self.araleHeaderView.delegate = self
  self.araleHeaderView.dataSource = self
  self.tableView.addSubview(self.araleHeaderView)
}

...

// You need to conform your ViewController to HeaderViewDataSource
// observableScrollViewForHeaderView will return any UIScrollView children instance to be tracked by the HeaderView

func observableScrollViewForHeaderView() -> UIScrollView {
  guard let tableView = self.tableView else {
    fatalError()
  }
        
  return tableView
}

...

// In case you want to add a refreshControl
// To handle action if the HeaderView has resize to maxHeight you can use HeaderViewDelegate

func headerViewWillStartRefreshing() {
  // If you have a refreshControl in the HeaderView then it will start refreshing for you
  print("Handle Your Refreshing Action Here")
}

// you can set the margin between the big head and your content to 0, the default is 16
araleHeaderView.bottomMargin = 0

// You can change the minimum and maximum content heights
araleHeaderView.minHeight = 64
araleHeaderView.maxHeight = 280