|
| 1 | +// |
| 2 | +// UIViewController+Convenience.swift |
| 3 | +// BottomSheetDemo |
| 4 | +// |
| 5 | +// Created by Mikhail Maslo on 15.08.2022. |
| 6 | +// Copyright © 2022 Joom. All rights reserved. |
| 7 | +// |
| 8 | + |
| 9 | +import UIKit |
| 10 | + |
| 11 | +public final class DefaultBottomSheetPresentationControllerFactory: BottomSheetPresentationControllerFactory { |
| 12 | + // MARK: - Nested types |
| 13 | + |
| 14 | + public typealias DismissalHandlerProvider = () -> BottomSheetModalDismissalHandler |
| 15 | + |
| 16 | + // MARK: - Public properties |
| 17 | + |
| 18 | + private let configuration: BottomSheetConfiguration |
| 19 | + private let dismissalHandlerProvider: DismissalHandlerProvider |
| 20 | + |
| 21 | + // MARK: - Init |
| 22 | + |
| 23 | + public init( |
| 24 | + configuration: BottomSheetConfiguration, |
| 25 | + dismissalHandlerProvider: @escaping DismissalHandlerProvider |
| 26 | + ) { |
| 27 | + self.dismissalHandlerProvider = dismissalHandlerProvider |
| 28 | + self.configuration = configuration |
| 29 | + } |
| 30 | + |
| 31 | + // MARK: - BottomSheetPresentationControllerFactory |
| 32 | + |
| 33 | + public func makeBottomSheetPresentationController( |
| 34 | + presentedViewController: UIViewController, |
| 35 | + presentingViewController: UIViewController? |
| 36 | + ) -> BottomSheetPresentationController { |
| 37 | + BottomSheetPresentationController( |
| 38 | + presentedViewController: presentedViewController, |
| 39 | + presentingViewController: presentingViewController, |
| 40 | + dismissalHandler: dismissalHandlerProvider(), |
| 41 | + configuration: configuration |
| 42 | + ) |
| 43 | + } |
| 44 | +} |
| 45 | + |
| 46 | +public final class DefaultBottomSheetModalDismissalHandler: BottomSheetModalDismissalHandler { |
| 47 | + // MARK: - Private properties |
| 48 | + |
| 49 | + private weak var presentingViewController: UIViewController? |
| 50 | + private let dismissCompletion: (() -> Void)? |
| 51 | + |
| 52 | + // MARK: - Init |
| 53 | + |
| 54 | + init( |
| 55 | + presentingViewController: UIViewController?, |
| 56 | + dismissCompletion: (() -> Void)? |
| 57 | + ) { |
| 58 | + self.presentingViewController = presentingViewController |
| 59 | + self.dismissCompletion = dismissCompletion |
| 60 | + } |
| 61 | + |
| 62 | + // MARK: - BottomSheetModalDismissalHandler |
| 63 | + |
| 64 | + public let canBeDismissed: Bool = true |
| 65 | + |
| 66 | + public func performDismissal(animated: Bool) { |
| 67 | + presentingViewController?.presentedViewController?.dismiss(animated: animated, completion: dismissCompletion) |
| 68 | + } |
| 69 | +} |
| 70 | + |
| 71 | +public extension UIViewController { |
| 72 | + private(set) var bottomSheetTransitionDelegate: UIViewControllerTransitioningDelegate? { |
| 73 | + get { objc_getAssociatedObject(self, &Self.bottomSheetTransitionDelegateKey) as? UIViewControllerTransitioningDelegate } |
| 74 | + set { objc_setAssociatedObject(self, &Self.bottomSheetTransitionDelegateKey, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) } |
| 75 | + } |
| 76 | + |
| 77 | + private static var bottomSheetTransitionDelegateKey: UInt8 = 0 |
| 78 | + |
| 79 | + func presentBottomSheet(viewController: UIViewController, configuration: BottomSheetConfiguration) { |
| 80 | + weak var presentingViewController = self |
| 81 | + weak var currentBottomSheetTransitionDelegate: UIViewControllerTransitioningDelegate? |
| 82 | + let presentationControllerFactory = DefaultBottomSheetPresentationControllerFactory(configuration: configuration) { |
| 83 | + DefaultBottomSheetModalDismissalHandler(presentingViewController: presentingViewController) { |
| 84 | + if currentBottomSheetTransitionDelegate === presentingViewController?.bottomSheetTransitionDelegate { |
| 85 | + presentingViewController?.bottomSheetTransitionDelegate = nil |
| 86 | + } |
| 87 | + } |
| 88 | + } |
| 89 | + bottomSheetTransitionDelegate = BottomSheetTransitioningDelegate( |
| 90 | + presentationControllerFactory: presentationControllerFactory |
| 91 | + ) |
| 92 | + currentBottomSheetTransitionDelegate = bottomSheetTransitionDelegate |
| 93 | + viewController.transitioningDelegate = bottomSheetTransitionDelegate |
| 94 | + viewController.modalPresentationStyle = .custom |
| 95 | + present(viewController, animated: true, completion: nil) |
| 96 | + } |
| 97 | + |
| 98 | + func presentBottomSheetInsideNavigationController(viewController: UIViewController, configuration: BottomSheetConfiguration) { |
| 99 | + let navigationController = BottomSheetNavigationController(rootViewController: viewController, configuration: configuration) |
| 100 | + presentBottomSheet(viewController: navigationController, configuration: configuration) |
| 101 | + } |
| 102 | +} |
0 commit comments