66 lines
1.7 KiB
Swift
66 lines
1.7 KiB
Swift
import Foundation
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import UIKit
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@objc
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public class RNSStackController: UINavigationController, ReactMountingTransactionObserving {
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private var needsChildViewControllersUpdate = false
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private let stackHostComponentView: RNSStackHostComponentView
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@objc public required init(stackHostComponentView: RNSStackHostComponentView) {
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self.stackHostComponentView = stackHostComponentView
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super.init(nibName: nil, bundle: nil)
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}
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required init?(coder aDecoder: NSCoder) {
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return nil
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}
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// MARK: Signals
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@objc
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public func setNeedsUpdateOfChildViewControllers() {
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needsChildViewControllersUpdate = true
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}
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// MARK: Updating
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@objc
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public func updateChildViewControllersIfNeeded() {
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if needsChildViewControllersUpdate {
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updateChildViewControllers()
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}
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}
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@objc
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public func updateChildViewControllers() {
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precondition(
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needsChildViewControllersUpdate,
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"[RNScreens] Child view controller must be invalidated when update is forced!")
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let activeControllers = sourceAllViewControllers()
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.filter { screenCtrl in screenCtrl.screen.activityMode == .attached }
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setViewControllers(activeControllers, animated: true)
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needsChildViewControllersUpdate = false
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}
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private func sourceAllViewControllers() -> [RNSStackScreenController] {
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let screenStackComponents =
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stackHostComponentView.reactSubviews() as! [RNSStackScreenComponentView]
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return screenStackComponents.lazy.map(\.controller)
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}
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// MARK: ReactMountingTransactionObserving
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@objc
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public func reactMountingTransactionWillMount() {
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// noop
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}
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@objc
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public func reactMountingTransactionDidMount() {
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updateChildViewControllersIfNeeded()
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}
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}
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