//
//  HorizontalPageViewController.swift
//  NewsBlur
//
//  Created by David Sinclair on 2020-08-27.
//  Copyright © 2020 NewsBlur. All rights reserved.
//

import UIKit


// NOTE: This isn't currently used, but may be for #1351 (gestures in vertical scrolling).


///// Manages horizontal story pages. An instance of this is contained within `DetailViewController`.
//class HorizontalPageViewController: UIPageViewController {
//    /// Weak reference to owning detail view controller.
//    weak var detailViewController: DetailViewController?
//
//    /// The currently displayed vertical page view controller. Call `setCurrentController(_:direction:animated:completion:)` instead to animate to the page. Shouldn't be `nil`, but could be if not set up yet.
//    var currentController: VerticalPageViewController? {
//        get {
//            return viewControllers?.first as? VerticalPageViewController
//        }
//        set {
//            if let viewController = newValue {
//                setCurrentController(viewController)
//            }
//        }
//    }
//
//    /// The previous vertical page view controller, if it has been requested, otherwise `nil`.
//    var previousController: VerticalPageViewController?
//
//    /// The next vertical page view controller, if it has been requested, otherwise `nil`.
//    var nextController: VerticalPageViewController?
//
//    /// Clear the previous and next vertical page view controllers.
//    func reset() {
//        previousController = nil
//        nextController = nil
//    }
//
//    /// Sets the currently displayed vertical page view controller.
//    ///
//    /// - Parameter controller: The vertical page view controller to display.
//    /// - Parameter direction: The navigation direction. Defaults to `.forward`.
//    /// - Parameter animated: Whether or not to animate it. Defaults to `false`.
//    /// - Parameter completion: A closure to call when the animation completes. Defaults to `nil`.
//    func setCurrentController(_ controller: VerticalPageViewController, direction: UIPageViewController.NavigationDirection = .forward, animated: Bool = false, completion: ((Bool) -> Void)? = nil) {
//        setViewControllers([controller], direction: direction, animated: animated, completion: completion)
//    }
//
//    override func setViewControllers(_ viewControllers: [UIViewController]?, direction: UIPageViewController.NavigationDirection, animated: Bool, completion: ((Bool) -> Void)? = nil) {
//        guard self.viewControllers != viewControllers else {
//            print("HorizontalPageViewController setViewControllers: \(String(describing: viewControllers)), ignoring as already set")
//            return
//        }
//
//        reset()
//
//        print("HorizontalPageViewController setViewControllers: \(String(describing: viewControllers)), current: \(String(describing: self.viewControllers))")
//
//        super.setViewControllers(viewControllers, direction: direction, animated: animated, completion: completion)
//    }
//}