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Coverage for "UINavigationController+Action.swift" : 88.89%

(48 of 54 relevant lines covered)

RouteComposer/Classes/Actions/UINavigationController+Action.swift

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//
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// RouteComposer
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// UINavigationController+Action.swift
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// https://github.com/ekazaev/route-composer
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//
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// Created by Eugene Kazaev in 2018-2022.
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// Distributed under the MIT license.
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//
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// Become a sponsor:
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// https://github.com/sponsors/ekazaev
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//
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import Foundation
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import UIKit
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// MARK: Actions for UINavigationController
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public extension ContainerViewController where Self: UINavigationController {
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    // MARK: Steps
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    /// Replaces all the child view controllers in the `UINavigationController`'s children stack
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    static func pushAsRoot() -> NavigationControllerActions.PushAsRootAction<Self> {
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        NavigationControllerActions.PushAsRootAction()
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    }
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    /// Pushes a child view controller into the `UINavigationController`'s children stack
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    static func push() -> NavigationControllerActions.PushAction<Self> {
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        NavigationControllerActions.PushAction()
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    }
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    /// Pushes a child view controller, replacing the existing, into the `UINavigationController`'s children stack
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    static func pushReplacingLast() -> NavigationControllerActions.PushReplacingLastAction<Self> {
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        NavigationControllerActions.PushReplacingLastAction()
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    }
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}
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/// Actions for `UINavigationController`
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public enum NavigationControllerActions {
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    // MARK: Internal entities
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    /// Pushes a view controller into `UINavigationController`'s child stack
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    public struct PushAction<ViewController: UINavigationController>: ContainerAction {
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        // MARK: Methods
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        /// Constructor
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        init() {}
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        public func perform(with viewController: UIViewController,
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                            on navigationController: ViewController,
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                            animated: Bool,
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                            completion: @escaping (_: RoutingResult) -> Void) {
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            navigationController.pushViewController(viewController, animated: animated)
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            if let transitionCoordinator = navigationController.transitionCoordinator, animated {
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                transitionCoordinator.animate(alongsideTransition: nil) { _ in
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                    completion(.success)
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                }
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            } else {
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                completion(.success)
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            }
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        }
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    }
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    /// Replaces all the child view controllers in the `UINavigationController`'s child stack
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    public struct PushAsRootAction<ViewController: UINavigationController>: ContainerAction {
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        // MARK: Methods
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        /// Constructor
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        init() {}
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        public func perform(embedding viewController: UIViewController,
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                            in childViewControllers: inout [UIViewController]) {
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            childViewControllers.removeAll()
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            childViewControllers.append(viewController)
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        }
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        public func perform(with viewController: UIViewController,
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                            on navigationController: ViewController,
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                            animated: Bool,
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                            completion: @escaping (_: RoutingResult) -> Void) {
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            navigationController.setViewControllers([viewController], animated: animated)
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            if let transitionCoordinator = navigationController.transitionCoordinator, animated {
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                transitionCoordinator.animate(alongsideTransition: nil) { _ in
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                    completion(.success)
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                }
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            } else {
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                completion(.success)
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            }
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        }
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    }
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    /// Pushes a view controller into the `UINavigationController`'s child stack replacing the last one
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    public struct PushReplacingLastAction<ViewController: UINavigationController>: ContainerAction {
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        // MARK: Methods
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        /// Constructor
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        init() {}
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        public func perform(embedding viewController: UIViewController,
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                            in childViewControllers: inout [UIViewController]) {
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            if !childViewControllers.isEmpty {
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                childViewControllers.removeLast()
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            }
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            childViewControllers.append(viewController)
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        }
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        public func perform(with viewController: UIViewController,
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                            on navigationController: ViewController,
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                            animated: Bool,
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                            completion: @escaping (_: RoutingResult) -> Void) {
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            var viewControllers = navigationController.viewControllers
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            perform(embedding: viewController, in: &viewControllers)
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            navigationController.setViewControllers(viewControllers, animated: animated)
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            if let transitionCoordinator = navigationController.transitionCoordinator, animated {
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                transitionCoordinator.animate(alongsideTransition: nil) { _ in
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                    completion(.success)
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                }
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            } else {
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                completion(.success)
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            }
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        }
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    }
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}