110 lines
4.0 KiB
Swift
110 lines
4.0 KiB
Swift
//
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// Copyright 2023 New Vector Ltd
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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 Combine
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import SwiftUI
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class WindowManager: WindowManagerProtocol {
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private let appDelegate: AppDelegate
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weak var windowScene: UIWindowScene?
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weak var delegate: WindowManagerDelegate?
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private(set) var mainWindow: UIWindow!
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private(set) var overlayWindow: UIWindow!
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private(set) var alternateWindow: UIWindow!
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var windows: [UIWindow] {
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[mainWindow, overlayWindow, alternateWindow]
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}
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// periphery:ignore - auto cancels when reassigned
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/// The task used to switch windows, so that we don't get stuck in the wrong state with a quick switch.
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@CancellableTask private var switchTask: Task<Void, Error>?
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/// A duration that allows window switching to wait a couple of frames to avoid a transition through black.
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private let windowHideDelay = Duration.milliseconds(33)
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init(appDelegate: AppDelegate) {
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self.appDelegate = appDelegate
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}
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func configure(with windowScene: UIWindowScene) {
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self.windowScene = windowScene
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mainWindow = windowScene.keyWindow
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mainWindow.tintColor = .compound.textActionPrimary
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overlayWindow = PassthroughWindow(windowScene: windowScene)
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overlayWindow.tintColor = .compound.textActionPrimary
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overlayWindow.backgroundColor = .clear
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overlayWindow.isHidden = false
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alternateWindow = UIWindow(windowScene: windowScene)
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alternateWindow.tintColor = .compound.textActionPrimary
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delegate?.windowManagerDidConfigureWindows(self)
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}
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func switchToMain() {
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mainWindow.isHidden = false
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overlayWindow.isHidden = false
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switchTask = Task {
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// Delay hiding to make sure the main windows are visible.
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try await Task.sleep(for: windowHideDelay)
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alternateWindow.isHidden = true
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}
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}
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func switchToAlternate() {
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alternateWindow.isHidden = false
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// We don't know what route the app will use when returning back
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// to the main window, so end any editing operation now to avoid
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// e.g. the keyboard being displayed on top of a call sheet.
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mainWindow.endEditing(true)
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// alternateWindow.isHidden = false cannot got inside the Task otherwise the timing
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// is poor when you lock the phone - you briefly see the main window for a few
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// frames after you've unlocked the phone and then the placeholder animates in.
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switchTask = Task {
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// Delay hiding to make sure the alternate window is visible.
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try await Task.sleep(for: windowHideDelay)
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overlayWindow.isHidden = true
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mainWindow.isHidden = true
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}
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}
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func setOrientation(_ orientation: UIInterfaceOrientationMask) {
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windowScene?.requestGeometryUpdate(.iOS(interfaceOrientations: orientation))
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}
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func lockOrientation(_ orientation: UIInterfaceOrientationMask) {
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appDelegate.orientationLock = orientation
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}
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}
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private class PassthroughWindow: UIWindow {
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override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
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guard let hitView = super.hitTest(point, with: event) else {
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return nil
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}
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// If the returned view is the `UIHostingController`'s view, ignore.
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return rootViewController?.view == hitView ? nil : hitView
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}
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}
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