88 lines
3.1 KiB
Swift
Executable File
88 lines
3.1 KiB
Swift
Executable File
/*
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Copyright 2020 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Foundation
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/// `RootRouter` is a concrete implementation of RootRouterType.
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final class RootRouter: RootRouterType {
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// MARK: - Constants
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// `rootViewController` animation constants
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private enum RootViewControllerUpdateAnimation {
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static let duration: TimeInterval = 0.3
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static let options: UIView.AnimationOptions = .transitionCrossDissolve
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}
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// MARK: - Properties
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private var presentedModule: Presentable?
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let window: UIWindow
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/// The root view controller currently presented
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var rootViewController: UIViewController? {
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return self.window.rootViewController
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}
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// MARK: - Setup
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init(window: UIWindow) {
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self.window = window
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}
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// MARK: - Public methods
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func setRootModule(_ module: Presentable) {
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self.updateRootViewController(rootViewController: module.toPresentable(), animated: false, completion: nil)
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self.window.makeKeyAndVisible()
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}
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func dismissRootModule(animated: Bool, completion: (() -> Void)?) {
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self.updateRootViewController(rootViewController: nil, animated: animated, completion: completion)
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}
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func presentModule(_ module: Presentable, animated: Bool, completion: (() -> Void)?) {
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let viewControllerPresenter = self.rootViewController?.presentedViewController ?? self.rootViewController
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viewControllerPresenter?.present(module.toPresentable(), animated: animated, completion: completion)
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self.presentedModule = module
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}
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func dismissModule(animated: Bool, completion: (() -> Void)?) {
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self.presentedModule?.toPresentable().dismiss(animated: animated, completion: completion)
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}
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// MARK: - Private methods
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private func updateRootViewController(rootViewController: UIViewController?, animated: Bool, completion: (() -> Void)?) {
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if animated {
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UIView.transition(with: window, duration: RootViewControllerUpdateAnimation.duration, options: RootViewControllerUpdateAnimation.options, animations: {
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let oldState: Bool = UIView.areAnimationsEnabled
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UIView.setAnimationsEnabled(false)
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self.window.rootViewController = rootViewController
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UIView.setAnimationsEnabled(oldState)
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}, completion: { (finished: Bool) -> Void in
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completion?()
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})
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} else {
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self.window.rootViewController = rootViewController
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completion?()
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}
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}
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}
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