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Add convenience methods for presenting BottomSheet
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91 changes: 91 additions & 0 deletions
91
Sources/BottomSheet/Core/Extensions/UIViewController+Convenience.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // | ||
| // UIViewController+Convenience.swift | ||
| // BottomSheetDemo | ||
| // | ||
| // Created by Mikhail Maslo on 15.08.2022. | ||
| // Copyright © 2022 Joom. All rights reserved. | ||
| // | ||
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| import UIKit | ||
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| public final class DefaultBottomSheetPresentationControllerFactory: BottomSheetPresentationControllerFactory { | ||
| // MARK: - Nested types | ||
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| public typealias DismissalHandlerProvider = () -> BottomSheetModalDismissalHandler | ||
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| // MARK: - Public properties | ||
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| private let dismissalHandlerProvider: DismissalHandlerProvider | ||
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| // MARK: - Init | ||
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| public init(dismissalHandlerProvider: @escaping DismissalHandlerProvider) { | ||
| self.dismissalHandlerProvider = dismissalHandlerProvider | ||
| } | ||
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| // MARK: - BottomSheetPresentationControllerFactory | ||
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| public func makeBottomSheetPresentationController( | ||
| presentedViewController: UIViewController, | ||
| presentingViewController: UIViewController? | ||
| ) -> BottomSheetPresentationController { | ||
| BottomSheetPresentationController( | ||
| presentedViewController: presentedViewController, | ||
| presentingViewController: presentingViewController, | ||
| dismissalHandler: dismissalHandlerProvider() | ||
| ) | ||
| } | ||
| } | ||
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| public final class DefaultBottomSheetModalDismissalHandler: BottomSheetModalDismissalHandler { | ||
| // MARK: - Private properties | ||
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| private weak var presentingViewController: UIViewController? | ||
| private let dismissCompletion: (() -> Void)? | ||
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| // MARK: - Init | ||
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| init( | ||
| presentingViewController: UIViewController?, | ||
| dismissCompletion: (() -> Void)? | ||
| ) { | ||
| self.presentingViewController = presentingViewController | ||
| self.dismissCompletion = dismissCompletion | ||
| } | ||
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| // MARK: - BottomSheetModalDismissalHandler | ||
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| public let canBeDismissed: Bool = true | ||
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| public func performDismissal(animated: Bool) { | ||
| presentingViewController?.presentedViewController?.dismiss(animated: animated, completion: dismissCompletion) | ||
| } | ||
| } | ||
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| public extension UIViewController { | ||
| private(set) var bottomSheetTransitionDelegate: UIViewControllerTransitioningDelegate? { | ||
| get { objc_getAssociatedObject(self, &Self.bottomSheetTransitionDelegateKey) as? UIViewControllerTransitioningDelegate } | ||
| set { objc_setAssociatedObject(self, &Self.bottomSheetTransitionDelegateKey, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) } | ||
| } | ||
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| private static var bottomSheetTransitionDelegateKey: UInt8 = 0 | ||
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| func presentBottomSheet(viewController: UIViewController) { | ||
| weak var presentingViewController = self | ||
| weak var currentBottomSheetTransitionDelegate: UIViewControllerTransitioningDelegate? | ||
| let presentationControllerFactory = DefaultBottomSheetPresentationControllerFactory { | ||
| DefaultBottomSheetModalDismissalHandler(presentingViewController: presentingViewController) { | ||
| if currentBottomSheetTransitionDelegate === presentingViewController?.bottomSheetTransitionDelegate { | ||
| presentingViewController?.bottomSheetTransitionDelegate = nil | ||
| } | ||
| } | ||
| } | ||
| bottomSheetTransitionDelegate = BottomSheetTransitioningDelegate( | ||
| presentationControllerFactory: presentationControllerFactory | ||
| ) | ||
| currentBottomSheetTransitionDelegate = bottomSheetTransitionDelegate | ||
| viewController.transitioningDelegate = bottomSheetTransitionDelegate | ||
| viewController.modalPresentationStyle = .custom | ||
| present(viewController, animated: true, completion: nil) | ||
| } | ||
| } |