/*

    Copyright (C) 2015 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    A view controller that demonstrates how to use UIPageControl.

*/

import UIKit

class PageControlViewController: UIViewController {

    // MARK: Properties

    @IBOutlet weak var pageControl: UIPageControl!

    @IBOutlet weak var colorView: UIView!

    /// Colors that correspond to the selected page. Used as the background color for "colorView".

    let colors = [

        UIColor.blackColor(),

        UIColor.grayColor(),

        UIColor.redColor(),

        UIColor.greenColor(),

        UIColor.blueColor(),

        UIColor.cyanColor(),

        UIColor.yellowColor(),

        UIColor.magentaColor(),

        UIColor.orangeColor(),

        UIColor.purpleColor()

    ]

    // MARK: View Life Cycle

    override func viewDidLoad() {

        super.viewDidLoad()

        configurePageControl()

        pageControlValueDidChange()

    }

    // MARK: Configuration

    func configurePageControl() {

        // The total number of pages that are available is based on how many available colors we have.

        pageControl.numberOfPages = colors.count

        pageControl.currentPage = 2

        pageControl.tintColor = UIColor.applicationBlueColor()

        pageControl.pageIndicatorTintColor = UIColor.applicationGreenColor()

        pageControl.currentPageIndicatorTintColor = UIColor.applicationPurpleColor()

        pageControl.addTarget(self, action: "pageControlValueDidChange", forControlEvents: .ValueChanged)

    }

    // MARK: Actions

    func pageControlValueDidChange() {

        NSLog("The page control changed its current page to \(pageControl.currentPage).")

        colorView.backgroundColor = colors[pageControl.currentPage]

    }

}