import UIKit


class ViewController: UIViewController {

    let sharedInstance = Note()

    @IBOutlet weak var heightScrollView: NSLayoutConstraint!

    @IBOutlet weak var scrollView: UIScrollView!

    @IBOutlet weak var titleTextField: UITextField!
    @IBOutlet weak var contentTextView: UITextView!
    @IBAction func useDestroyDateSwitcher(_ sender: UISwitch) {
//        let switcher = UIDatePicker()
//
    }
    @objc func keyboardWillChange(notification: Notification) {

        guard let keyboardRect = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue else {
            return
        }
        if notification.name == UIResponder.keyboardWillShowNotification || notification.name == UIResponder.keyboardWillChangeFrameNotification {
            let keyboardHeight: CGFloat = CGFloat(keyboardRect.height)
            let scrollViewHeight: CGFloat = CGFloat(heightScrollView.constant)

            var frame = scrollViewHeight - keyboardHeight

            scrollView.contentSize.height = frame


        }
        else {
            scrollView.frame.origin.y = 0
        }


        }


    func autoSizeTextView() {
        var frame = self.contentTextView.frame
        frame.size.height = self.contentTextView.contentSize.height
        self.contentTextView.frame = frame
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange(notification:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
}
    deinit {
        NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillShowNotification, object: nil)
        NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillHideNotification, object: nil)
        NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
    }
}