98 lines
2.3 KiB
Swift
98 lines
2.3 KiB
Swift
//
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// LockableView.swift
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// Passepartout
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//
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// Created by Davide De Rosa on 3/20/23.
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// Copyright (c) 2023 Davide De Rosa. All rights reserved.
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//
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// https://github.com/passepartoutvpn
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//
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// This file is part of Passepartout.
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//
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// Passepartout is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Passepartout is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
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//
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import SwiftUI
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struct LockableView<Content: View, LockedContent: View>: View {
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@Binding var locksInBackground: Bool
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let content: () -> Content
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let lockedContent: () -> LockedContent
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let unlockBlock: (Binding<Bool>) -> Void
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@Environment(\.scenePhase) private var scenePhase
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@ObservedObject private var lock: Lock = .shared
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private var isLocked: Binding<Bool> {
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.init {
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Lock.shared.isActive
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} set: {
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Lock.shared.isActive = $0
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}
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}
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var body: some View {
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ZStack {
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content()
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if isLocked.wrappedValue {
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lockedContent()
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}
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}.onChange(of: scenePhase, perform: onScenePhase)
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}
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private func onScenePhase(_ scenePhase: ScenePhase) {
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switch scenePhase {
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case .active:
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unlockIfNeeded()
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case .background:
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lockIfNeeded()
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default:
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break
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}
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}
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func lockIfNeeded() {
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guard locksInBackground else {
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return
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}
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isLocked.wrappedValue = true
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}
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func unlockIfNeeded() {
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guard locksInBackground else {
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isLocked.wrappedValue = false
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return
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}
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guard isLocked.wrappedValue else {
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return
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}
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unlockBlock(isLocked)
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}
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}
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private class Lock: ObservableObject {
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static let shared = Lock()
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@Published var isActive = true
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private init() {
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}
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}
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