import PolioPager

import PolioPager

class ViewController: PolioPagerViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func tabItems()-> [TabItem] {
        return [TabItem(title: "Redbull"),TabItem(title: "Monster"),TabItem(title: "Caffeine Addiction")]
    }

    override func viewControllers()-> [UIViewController]
    {
        let storyboard = UIStoryboard(name: "Main", bundle: nil)

        let viewController1 = storyboard.instantiateViewController(withIdentifier: "searchView")
        let viewController2 = storyboard.instantiateViewController(withIdentifier: "view1")
        let viewController3 = storyboard.instantiateViewController(withIdentifier: "view2")
        let viewController4 = storyboard.instantiateViewController(withIdentifier: "view3")

        return [viewController1, viewController2, viewController3, viewController4]
    }
}

class ViewController: PolioPagerViewController {
    ...
}

override func tabItems()-> [TabItem] {
    return [TabItem(title: "Redbull"),TabItem(title: "Monster"),TabItem(title: "Caffeine Addiction")]
}

override func viewControllers()-> [UIViewController]
{
    let storyboard = UIStoryboard(name: "Main", bundle: nil)

    let viewController1 = storyboard.instantiateViewController(withIdentifier: "searchView")
    let viewController2 = storyboard.instantiateViewController(withIdentifier: "view1")

    return [viewController1, viewController2]
}

public struct TabItem {
    var title: String?
    var image: UIImage?
    var font: UIFont
    var cellWidth: CGFloat?
    var backgroundColor: UIColor
    var normalColor:UIColor
    var highlightedColor: UIColor

    public init(title: String? = nil,
    image: UIImage? = nil,
    font:UIFont = .systemFont(ofSize: 15),
    cellWidth: CGFloat? = nil,
    backgroundColor: UIColor = .white,
    normalColor: UIColor = .lightGray,
    highlightedColor: UIColor = .black){

        self.title = title
        self.image = image
        self.font = font
        self.cellWidth = cellWidth
        self.backgroundColor = backgroundColor
        self.normalColor = normalColor
        self.highlightedColor = highlightedColor

    }
}

import PolioPager

class SearchViewController: UIViewController, PolioPagerSearchTabDelegate, UITextFieldDelegate {

    @IBOutlet weak var label: UILabel!


    var searchBar: UIView!
    var searchTextField: UITextField!
    var cancelButton: UIButton!


    override func viewDidLoad() {
        super.viewDidLoad()

        self.searchTextField.delegate = self
    }

    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        guard let text = textField.text else{ return true }

        label.text = text
        return true
    }


}

//color
public var tabBackgroundColor: UIColor = .white

//duration
public var barAnimationDuration: Double = 0.23

public var eachLineSpacing: CGFloat = 5
public var sectionInset: UIEdgeInsets = UIEdgeInsets(top: 0, left: 20, bottom: 0, right: 10)

public var selectedBarHeight: CGFloat = 3

//selectedBar
public var selectedBarMargins: (upper: CGFloat, lower: CGFloat) = (1, 2)

//pageView
public var pageViewMargin: CGFloat = 1

public var needBorder: Bool
public var boderHeight: CGFloat = 1
public var borderColor: UIColor = .lightGray

public var barAnimationDuration: Double = 0.23 //Default.

public var barAnimationDuration: Double = 0.10

//MARK: open IBOutlet
@IBOutlet weak open var collectionView: UICollectionView!
@IBOutlet weak open var searchBar: UIView!
@IBOutlet weak open var selectedBar: UIView!
@IBOutlet weak open var pageView: UIView!
@IBOutlet weak open var searchTextField: UITextField!
@IBOutlet weak open var cancelButton: UIButton!

//PolioPagerViewController

override func viewDidLoad() {
     self.selectedBarHeight = 2
     self.selectedBar.layer.cornerRadius = 0
     self.selectedBar.backgroundColor = .gray

     super.viewDidLoad()
 }

//PolioPagerViewController

moveTo(index: 1)
moveTo(index: nextIndex)
...

class ViewController: PolioPagerViewController {

    override func viewDidLoad() {
        self.initialIndex = 1
        ...
    }
}