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167 lines
5.8 KiB
Swift
167 lines
5.8 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import KingfisherSwiftUI
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import enum Mastodon.Timeline
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import SwiftUI
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import ViewModels
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struct TabNavigationView: View {
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@ObservedObject var viewModel: TabNavigationViewModel
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@EnvironmentObject var rootViewModel: RootViewModel
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@Environment(\.displayScale) var displayScale: CGFloat
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var body: some View {
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TabView(selection: $viewModel.selectedTab) {
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ForEach(viewModel.tabs) { tab in
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NavigationView {
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view(tab: tab)
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}
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.navigationViewStyle(StackNavigationViewStyle())
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.tabItem {
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Label(tab.title, systemImage: tab.systemImageName)
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.accessibility(label: Text(tab.title))
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}
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.tag(tab)
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}
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}
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.environmentObject(viewModel.identification)
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.sheet(isPresented: $viewModel.presentingSecondaryNavigation) {
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SecondaryNavigationView(viewModel: viewModel)
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.environmentObject(viewModel.identification)
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.environmentObject(viewModel)
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.environmentObject(rootViewModel)
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}
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.alertItem($viewModel.alertItem)
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.onAppear(perform: viewModel.refreshIdentity)
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.onReceive(NotificationCenter.default
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.publisher(for: UIScene.willEnterForegroundNotification)
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.map { _ in () },
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perform: viewModel.refreshIdentity)
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}
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}
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private extension TabNavigationView {
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@ViewBuilder
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func view(tab: TabNavigationViewModel.Tab) -> some View {
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switch tab {
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case .timelines:
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StatusListView(viewModel: viewModel.viewModel(timeline: viewModel.timeline))
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.id(viewModel.timeline.id)
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.edgesIgnoringSafeArea(.all)
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.navigationBarTitle(viewModel.timeline.title, displayMode: .inline)
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.toolbar {
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ToolbarItem(placement: .principal) {
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VStack {
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Text(viewModel.timeline.title)
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.font(.headline)
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Text(viewModel.timelineSubtitle)
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.font(.footnote)
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.foregroundColor(.secondary)
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}
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}
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}
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.navigationBarItems(
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leading: secondaryNavigationButton,
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trailing: Menu {
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ForEach(viewModel.timelinesAndLists) { timeline in
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Button {
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viewModel.timeline = timeline
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} label: {
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Label(timeline.title,
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systemImage: timeline.systemImageName)
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}
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}
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} label: {
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Image(systemName: viewModel.timeline.systemImageName)
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})
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default: Text(tab.title)
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}
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}
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@ViewBuilder
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var secondaryNavigationButton: some View {
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Button {
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viewModel.presentingSecondaryNavigation.toggle()
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} label: {
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KFImage(viewModel.identification.identity.image,
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options: .downsampled(dimension: 28, scaleFactor: displayScale))
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.placeholder { Image(systemName: "gear") }
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.renderingMode(.original)
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.contextMenu(ContextMenu {
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ForEach(viewModel.recentIdentities) { recentIdentity in
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Button {
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rootViewModel.identitySelected(id: recentIdentity.id)
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} label: {
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Label(
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title: { Text(recentIdentity.handle) },
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icon: {
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KFImage(recentIdentity.image,
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options: .downsampled(dimension: 28, scaleFactor: displayScale))
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.renderingMode(.original)
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})
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}
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}
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})
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}
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}
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}
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private extension Timeline {
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var title: String {
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switch self {
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case .home:
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return NSLocalizedString("timelines.home", comment: "")
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case .local:
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return NSLocalizedString("timelines.local", comment: "")
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case .federated:
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return NSLocalizedString("timelines.federated", comment: "")
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case let .list(list):
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return list.title
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case let .tag(tag):
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return "#" + tag
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}
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}
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var systemImageName: String {
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switch self {
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case .home: return "house"
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case .local: return "person.3"
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case .federated: return "globe"
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case .list: return "scroll"
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case .tag: return "number"
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}
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}
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}
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extension TabNavigationViewModel.Tab {
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var title: String {
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switch self {
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case .timelines: return "Timelines"
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case .explore: return "Explore"
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case .notifications: return "Notifications"
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case .messages: return "Messages"
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}
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}
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var systemImageName: String {
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switch self {
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case .timelines: return "newspaper"
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case .explore: return "magnifyingglass"
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case .notifications: return "bell"
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case .messages: return "envelope"
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}
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}
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}
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#if DEBUG
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import PreviewViewModels
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struct TabNavigation_Previews: PreviewProvider {
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static var previews: some View {
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TabNavigationView(viewModel: TabNavigationViewModel(identification: .preview))
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.environmentObject(Identification.preview)
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.environmentObject(RootViewModel.preview)
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}
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}
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#endif
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