112 lines
3.7 KiB
Swift
112 lines
3.7 KiB
Swift
//
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// TabNavigationController.swift
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// suixinkan
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//
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import UIKit
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@MainActor
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/// 单个 Tab 的导航栈，与 `AppRouter` 路径同步并在 push 时隐藏底部 TabBar。
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final class TabNavigationController: UINavigationController, UINavigationControllerDelegate {
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let appTab: AppTab
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private let services: AppServices
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private var isSyncingStack = false
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weak var tabBarHost: MainTabBarController?
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init(tab: AppTab, services: AppServices) {
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self.appTab = tab
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self.services = services
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super.init(nibName: nil, bundle: nil)
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delegate = self
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navigationBar.prefersLargeTitles = false
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setViewControllers([tab.makeRootViewController(services: services)], animated: false)
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registerNavigationBridge()
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services.appRouter.router(for: appTab).onChange = { [weak self] in
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self?.syncFromRouterPath()
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}
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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/// Push 指定应用路由，并同步写入 RouterPath。
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func pushRoute(_ route: AppRoute, animated: Bool = true) {
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let viewController = AppRouteViewControllerFactory.makeViewController(for: route, services: services)
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viewController.hidesBottomBarWhenPushed = route.hidesTabBarWhenPushed
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isSyncingStack = true
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services.appRouter.router(for: appTab).navigate(to: route)
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isSyncingStack = false
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pushViewController(viewController, animated: animated)
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}
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func navigationController(
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_ navigationController: UINavigationController,
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willShow viewController: UIViewController,
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animated: Bool
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) {
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let isRoot = viewController === viewControllers.first
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tabBarHost?.setCustomTabBarHidden(!isRoot, animated: animated)
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}
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func navigationController(
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_ navigationController: UINavigationController,
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didShow viewController: UIViewController,
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animated: Bool
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) {
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syncRouterPathFromStack()
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}
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private func registerNavigationBridge() {
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switch appTab {
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case .home:
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UIKitAppNavigation.homeNavigationController = self
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case .profile:
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UIKitAppNavigation.profileNavigationController = self
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default:
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break
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}
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}
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private func syncFromRouterPath() {
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guard !isSyncingStack else { return }
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let routerPath = services.appRouter.router(for: appTab)
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let targetDepth = routerPath.path.count
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let currentDepth = max(viewControllers.count - 1, 0)
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if targetDepth > currentDepth {
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for index in currentDepth..<targetDepth {
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let route = routerPath.path[index]
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let viewController = AppRouteViewControllerFactory.makeViewController(for: route, services: services)
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viewController.hidesBottomBarWhenPushed = route.hidesTabBarWhenPushed
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pushViewController(viewController, animated: true)
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}
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return
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}
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if targetDepth < currentDepth {
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if targetDepth == 0 {
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popToRootViewController(animated: true)
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} else if targetDepth < viewControllers.count {
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popToViewController(viewControllers[targetDepth], animated: true)
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}
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}
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}
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private func syncRouterPathFromStack() {
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guard !isSyncingStack else { return }
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let routerPath = services.appRouter.router(for: appTab)
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let depth = max(viewControllers.count - 1, 0)
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if depth < routerPath.path.count {
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isSyncingStack = true
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routerPath.path = Array(routerPath.path.prefix(depth))
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isSyncingStack = false
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}
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}
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}
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