Stream improvements

submodules/ComponentFlow/Source/Host/RootHostView.swift

@@ -1,134 +1,3 @@
 import Foundation
 import UIKit
 
-public final class RootHostView<EnvironmentType: Equatable>: UIViewController {
-    private let content: AnyComponent<(NavigationLayout, EnvironmentType)>
-
-    private var keyboardWillChangeFrameObserver: NSObjectProtocol?
-    private var inputHeight: CGFloat = 0.0
-
-    private let environment: Environment<EnvironmentType>
-    private var componentView: ComponentHostView<(NavigationLayout, EnvironmentType)>
-
-    private var scheduledTransition: Transition?
-
-    public init(
-        content: AnyComponent<(NavigationLayout, EnvironmentType)>,
-        @EnvironmentBuilder environment: () -> Environment<EnvironmentType>
-    ) {
-        self.content = content
-
-        self.environment = Environment<EnvironmentType>()
-        self.componentView = ComponentHostView<(NavigationLayout, EnvironmentType)>()
-
-        EnvironmentBuilder._environment = self.environment
-        let _ = environment()
-        EnvironmentBuilder._environment = nil
-
-        super.init(nibName: nil, bundle: nil)
-
-        NotificationCenter.default.addObserver(forName: UIApplication.keyboardWillChangeFrameNotification, object: nil, queue: nil, using: { [weak self] notification in
-            guard let strongSelf = self else {
-                return
-            }
-            guard let keyboardFrame = notification.userInfo?[UIApplication.keyboardFrameEndUserInfoKey] as? CGRect else {
-                return
-            }
-
-            var duration: Double = (notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue ?? 0.0
-            if duration > Double.ulpOfOne {
-                duration = 0.5
-            }
-            let curve: UInt = (notification.userInfo?[UIResponder.keyboardAnimationCurveUserInfoKey] as? NSNumber)?.uintValue ?? 7
-
-            let transition: Transition
-            if curve == 7 {
-                transition = Transition(animation: .curve(duration: duration, curve: .spring))
-            } else {
-                transition = Transition(animation: .curve(duration: duration, curve: .easeInOut))
-            }
-
-            strongSelf.updateKeyboardLayout(keyboardFrame: keyboardFrame, transition: transition)
-        })
-    }
-
-    required public init?(coder: NSCoder) {
-        fatalError("init(coder:) has not been implemented")
-    }
-
-    deinit {
-        self.keyboardWillChangeFrameObserver.flatMap(NotificationCenter.default.removeObserver)
-    }
-
-    private func updateKeyboardLayout(keyboardFrame: CGRect, transition: Transition) {
-        self.inputHeight = max(0.0, self.view.bounds.height - keyboardFrame.minY)
-        if self.componentView.isUpdating || true {
-            if let _ = self.scheduledTransition {
-                if case .curve = transition.animation {
-                    self.scheduledTransition = transition
-                }
-            } else {
-                self.scheduledTransition = transition
-            }
-            self.view.setNeedsLayout()
-        } else {
-            self.updateComponent(size: self.view.bounds.size, transition: transition)
-        }
-    }
-
-    private func updateComponent(size: CGSize, transition: Transition) {
-        self.environment._isUpdated = false
-
-        transition.setFrame(view: self.componentView, frame: CGRect(origin: CGPoint(), size: size))
-        let _ = self.componentView.update(
-            transition: transition,
-            component: self.content,
-            environment: {
-                NavigationLayout(
-                    statusBarHeight: size.width > size.height ? 0.0 : 40.0,
-                    inputHeight: self.inputHeight,
-                    bottomNavigationHeight: 22.0
-                )
-                self.environment[EnvironmentType.self]
-            },
-            containerSize: size
-        )
-    }
-
-    public func updateEnvironment(@EnvironmentBuilder environment: () -> Environment<EnvironmentType>) {
-        EnvironmentBuilder._environment = self.environment
-        let _ = environment()
-        EnvironmentBuilder._environment = nil
-
-        if self.environment.calculateIsUpdated() {
-            if !self.view.bounds.size.width.isZero {
-                self.updateComponent(size: self.view.bounds.size, transition: .immediate)
-            }
-        }
-    }
-
-    override public func viewDidLoad() {
-        super.viewDidLoad()
-
-        self.view.addSubview(self.componentView)
-
-        if !self.view.bounds.size.width.isZero {
-            self.updateComponent(size: self.view.bounds.size, transition: .immediate)
-        }
-    }
-
-    override public func viewDidLayoutSubviews() {
-        super.viewDidLayoutSubviews()
-
-        if let scheduledTransition = self.scheduledTransition {
-            self.scheduledTransition = nil
-            self.updateComponent(size: self.view.bounds.size, transition: scheduledTransition)
-        }
-    }
-
-    override public func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
-        super.viewWillTransition(to: size, with: coordinator)
-
-        self.updateComponent(size: size, transition: coordinator.isAnimated ? .easeInOut(duration: 0.3) : .immediate)
-    }
-}