Merge branch 'tabbarnav' into develop

Tusker.xcodeproj/project.pbxproj

@@ -131,6 +131,8 @@
 		D646DCDC2A081CF10059ECEB /* StatusUpdatedNotificationCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D646DCDB2A081CF10059ECEB /* StatusUpdatedNotificationCollectionViewCell.swift */; };
 		D64A50462C739DC0009D7193 /* NewMainTabBarViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64A50452C739DC0009D7193 /* NewMainTabBarViewController.swift */; };
 		D64A50482C739DEA009D7193 /* BaseMainTabBarViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64A50472C739DEA009D7193 /* BaseMainTabBarViewController.swift */; };
+		D64A50BC2C74F8F4009D7193 /* FindInstanceViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64A50BB2C74F8F4009D7193 /* FindInstanceViewController.swift */; };
+		D64A50BE2C752247009D7193 /* AdaptableNavigationController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64A50BD2C752247009D7193 /* AdaptableNavigationController.swift */; };
 		D64AAE9126C80DC600FC57FB /* ToastView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64AAE9026C80DC600FC57FB /* ToastView.swift */; };
 		D64AAE9526C88C5000FC57FB /* ToastableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64AAE9426C88C5000FC57FB /* ToastableViewController.swift */; };
 		D64AAE9726C88DC400FC57FB /* ToastConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64AAE9626C88DC400FC57FB /* ToastConfiguration.swift */; };
@@ -217,15 +219,12 @@
 		D6934F402BAA19EC002B1C8D /* VideoActivityItemSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6934F3F2BAA19EC002B1C8D /* VideoActivityItemSource.swift */; };
 		D6934F422BAC7D6E002B1C8D /* VideoControlsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6934F412BAC7D6E002B1C8D /* VideoControlsViewController.swift */; };
 		D693A72825CF282E003A14E2 /* TrendingHashtagsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D693A72725CF282E003A14E2 /* TrendingHashtagsViewController.swift */; };
-		D693A72F25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D693A72D25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.swift */; };
-		D693A73025CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = D693A72E25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.xib */; };
 		D693DE5723FE1A6A0061E07D /* EnhancedNavigationViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D693DE5623FE1A6A0061E07D /* EnhancedNavigationViewController.swift */; };
 		D693DE5923FE24310061E07D /* InteractivePushTransition.swift in Sources */ = {isa = PBXBuildFile; fileRef = D693DE5823FE24300061E07D /* InteractivePushTransition.swift */; };
 		D6945C2F23AC47C3005C403C /* SavedDataManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6945C2E23AC47C3005C403C /* SavedDataManager.swift */; };
 		D6945C3223AC4D36005C403C /* HashtagTimelineViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6945C3123AC4D36005C403C /* HashtagTimelineViewController.swift */; };
 		D6945C3423AC6431005C403C /* AddSavedHashtagViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6945C3323AC6431005C403C /* AddSavedHashtagViewController.swift */; };
 		D6945C3823AC739F005C403C /* InstanceTimelineViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6945C3723AC739F005C403C /* InstanceTimelineViewController.swift */; };
-		D6945C3A23AC75E2005C403C /* FindInstanceViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6945C3923AC75E2005C403C /* FindInstanceViewController.swift */; };
 		D6958F3D2AA383D90062FE52 /* WidescreenNavigationPrefsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6958F3C2AA383D90062FE52 /* WidescreenNavigationPrefsView.swift */; };
 		D69693F42585941A00F4E116 /* UIWindowSceneDelegate+Close.swift in Sources */ = {isa = PBXBuildFile; fileRef = D69693F32585941A00F4E116 /* UIWindowSceneDelegate+Close.swift */; };
 		D69693FA25859A8000F4E116 /* ComposeSceneDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = D69693F925859A8000F4E116 /* ComposeSceneDelegate.swift */; };
@@ -564,6 +563,8 @@
 		D646DCDB2A081CF10059ECEB /* StatusUpdatedNotificationCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusUpdatedNotificationCollectionViewCell.swift; sourceTree = "<group>"; };
 		D64A50452C739DC0009D7193 /* NewMainTabBarViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NewMainTabBarViewController.swift; sourceTree = "<group>"; };
 		D64A50472C739DEA009D7193 /* BaseMainTabBarViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BaseMainTabBarViewController.swift; sourceTree = "<group>"; };
+		D64A50BB2C74F8F4009D7193 /* FindInstanceViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FindInstanceViewController.swift; sourceTree = "<group>"; };
+		D64A50BD2C752247009D7193 /* AdaptableNavigationController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AdaptableNavigationController.swift; sourceTree = "<group>"; };
 		D64AAE9026C80DC600FC57FB /* ToastView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToastView.swift; sourceTree = "<group>"; };
 		D64AAE9426C88C5000FC57FB /* ToastableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToastableViewController.swift; sourceTree = "<group>"; };
 		D64AAE9626C88DC400FC57FB /* ToastConfiguration.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToastConfiguration.swift; sourceTree = "<group>"; };
@@ -653,15 +654,12 @@
 		D6934F3F2BAA19EC002B1C8D /* VideoActivityItemSource.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VideoActivityItemSource.swift; sourceTree = "<group>"; };
 		D6934F412BAC7D6E002B1C8D /* VideoControlsViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VideoControlsViewController.swift; sourceTree = "<group>"; };
 		D693A72725CF282E003A14E2 /* TrendingHashtagsViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrendingHashtagsViewController.swift; sourceTree = "<group>"; };
-		D693A72D25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FeaturedProfileCollectionViewCell.swift; sourceTree = "<group>"; };
-		D693A72E25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = FeaturedProfileCollectionViewCell.xib; sourceTree = "<group>"; };
 		D693DE5623FE1A6A0061E07D /* EnhancedNavigationViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EnhancedNavigationViewController.swift; sourceTree = "<group>"; };
 		D693DE5823FE24300061E07D /* InteractivePushTransition.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InteractivePushTransition.swift; sourceTree = "<group>"; };
 		D6945C2E23AC47C3005C403C /* SavedDataManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SavedDataManager.swift; sourceTree = "<group>"; };
 		D6945C3123AC4D36005C403C /* HashtagTimelineViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HashtagTimelineViewController.swift; sourceTree = "<group>"; };
 		D6945C3323AC6431005C403C /* AddSavedHashtagViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddSavedHashtagViewController.swift; sourceTree = "<group>"; };
 		D6945C3723AC739F005C403C /* InstanceTimelineViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InstanceTimelineViewController.swift; sourceTree = "<group>"; };
-		D6945C3923AC75E2005C403C /* FindInstanceViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = FindInstanceViewController.swift; path = Tusker/Screens/FindInstanceViewController.swift; sourceTree = SOURCE_ROOT; };
 		D6958F3C2AA383D90062FE52 /* WidescreenNavigationPrefsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WidescreenNavigationPrefsView.swift; sourceTree = "<group>"; };
 		D69693F32585941A00F4E116 /* UIWindowSceneDelegate+Close.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIWindowSceneDelegate+Close.swift"; sourceTree = "<group>"; };
 		D69693F925859A8000F4E116 /* ComposeSceneDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposeSceneDelegate.swift; sourceTree = "<group>"; };
@@ -981,7 +979,7 @@
 				D68E525C24A3E8F00054355A /* InlineTrendsViewController.swift */,
 				D6945C3323AC6431005C403C /* AddSavedHashtagViewController.swift */,
 				D6093F9A25BDD4B9004811E6 /* HashtagSearchResultsViewController.swift */,
-				D6945C3923AC75E2005C403C /* FindInstanceViewController.swift */,
+				D64A50BB2C74F8F4009D7193 /* FindInstanceViewController.swift */,
 				D6114E0C27F7FEB30080E273 /* TrendingStatusesViewController.swift */,
 				D693A72725CF282E003A14E2 /* TrendingHashtagsViewController.swift */,
 				D6114E1027F899B30080E273 /* TrendingLinksViewController.swift */,
@@ -991,8 +989,6 @@
 				D601FA81297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.swift */,
 				D601FA82297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.xib */,
 				D6BC74852AFC4772000DD603 /* SuggestedProfileCardView.swift */,
-				D693A72D25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.swift */,
-				D693A72E25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.xib */,
 				D6C3F4FA299035650009FCFF /* TrendsViewController.swift */,
 				D68329EE299540050026EB24 /* MoreTrendsFooterCollectionViewCell.swift */,
 				D6DD996A2998611A0015C962 /* SuggestedProfilesViewController.swift */,
@@ -1562,6 +1558,7 @@
 				D6B8DB332182A59300424AF7 /* UIAlertController+Visibility.swift */,
 				D6C693FD2162FEEA007D6A6D /* UIViewController+Children.swift */,
 				D61F759129365C6C00C0B37F /* CollectionViewController.swift */,
+				D64A50BD2C752247009D7193 /* AdaptableNavigationController.swift */,
 			);
 			path = Utilities;
 			sourceTree = "<group>";
@@ -2020,7 +2017,6 @@
 			buildActionMask = 2147483647;
 			files = (
 				D6E77D0D286E6B7300D8B732 /* TrendingLinkCardCollectionViewCell.xib in Resources */,
-				D693A73025CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.xib in Resources */,
 				D61AC1D9232EA42D00C54D2D /* InstanceTableViewCell.xib in Resources */,
 				D691296E2BA75ADF005C58ED /* PrivacyInfo.xcprivacy in Resources */,
 				D6412B0B24B0D4C600F5412E /* ProfileHeaderView.xib in Resources */,
@@ -2241,6 +2237,7 @@
 				D691772E29AA5D420054D7EF /* UserActivityHandlingContext.swift in Sources */,
 				04ED00B121481ED800567C53 /* SteppedProgressView.swift in Sources */,
 				D6A6C11B25B63CEE00298D0F /* MemoryCache.swift in Sources */,
+				D64A50BC2C74F8F4009D7193 /* FindInstanceViewController.swift in Sources */,
 				D6114E0D27F7FEB30080E273 /* TrendingStatusesViewController.swift in Sources */,
 				D6BC9DDA232D8BE5002CA326 /* SearchResultsViewController.swift in Sources */,
 				D698F4672BD079800054DB14 /* AnnouncementsHostingController.swift in Sources */,
@@ -2260,7 +2257,6 @@
 				D61DC84D28F500D200B82C6E /* ProfileViewController.swift in Sources */,
 				D6187BED2BFA840B00B3A281 /* FollowRequestNotificationViewController.swift in Sources */,
 				D600891F29848DE2005B4D00 /* AddInstancePinnedTimelineView.swift in Sources */,
-				D693A72F25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.swift in Sources */,
 				D627943223A5466600D38C68 /* SelectableTableViewCell.swift in Sources */,
 				D64B96812BC3279D002C8990 /* PrefsAccountView.swift in Sources */,
 				D6EAE0DB2550CC8A002DB0AC /* FocusableTextField.swift in Sources */,
@@ -2280,7 +2276,6 @@
 				D63CC7102911F1E4000E19DE /* UIScrollView+Top.swift in Sources */,
 				D6F6A557291F4F1600F496A8 /* MuteAccountView.swift in Sources */,
 				D65B4B8B297879E900DABDFB /* AccountFollowsViewController.swift in Sources */,
-				D6945C3A23AC75E2005C403C /* FindInstanceViewController.swift in Sources */,
 				D65B4B6429771EFF00DABDFB /* ConversationViewController.swift in Sources */,
 				D68E6F59253C9969001A1B4C /* MultiSourceEmojiLabel.swift in Sources */,
 				D6EBF01523C55C0900AE061B /* UIApplication+Scenes.swift in Sources */,
@@ -2349,6 +2344,7 @@
 				D6C693FE2162FEEA007D6A6D /* UIViewController+Children.swift in Sources */,
 				D61A45EA28DF51EE002BE511 /* TimelineLikeCollectionViewController.swift in Sources */,
 				D64D0AB12128D9AE005A6F37 /* OnboardingViewController.swift in Sources */,
+				D64A50BE2C752247009D7193 /* AdaptableNavigationController.swift in Sources */,
 				D6934F302BA7AF91002B1C8D /* ImageGalleryContentViewController.swift in Sources */,
 				D6934F3E2BAA19D5002B1C8D /* ImageActivityItemSource.swift in Sources */,
 				D67C1795266D57D10070F250 /* FastAccountSwitcherIndicatorView.swift in Sources */,

Tusker/Box.swift

@@ -9,10 +9,14 @@
 import Foundation
 
 @propertyWrapper
-class Box<Value> {
+final class Box<Value> {
     var wrappedValue: Value
     
     init(wrappedValue: Value) {
         self.wrappedValue = wrappedValue
     }
+    
+    var projectedValue: Box<Value> {
+        self
+    }
 }

Tusker/Screens/Account Follows/AccountFollowsListViewController.swift

@@ -17,9 +17,7 @@ class AccountFollowsListViewController: UIViewController, CollectionViewControll
     let mastodonController: MastodonController
     let mode: AccountFollowsViewController.Mode
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     private var state: State = .unloaded
@@ -40,7 +38,11 @@ class AccountFollowsListViewController: UIViewController, CollectionViewControll
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        view.backgroundColor = .appGroupedBackground
+        
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
         config.backgroundColor = .appBackground
         config.itemSeparatorHandler = { [unowned self] indexPath, sectionConfig in
@@ -65,10 +67,19 @@ class AccountFollowsListViewController: UIViewController, CollectionViewControll
             section.readableContentInset(in: environment)
             return section
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        
         dataSource = createDataSource()
     }
     

Tusker/Screens/Account List/AccountListViewController.swift

@@ -14,9 +14,7 @@ class AccountListViewController: UIViewController, CollectionViewController {
     private let mastodonController: MastodonController
     private let accountIDs: [String]
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     init(accountIDs: [String], mastodonController: MastodonController) {
@@ -30,7 +28,11 @@ class AccountListViewController: UIViewController, CollectionViewController {
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        view.backgroundColor = .appGroupedBackground
+        
         var config = UICollectionLayoutListConfiguration(appearance: .grouped)
         config.backgroundColor = .appGroupedBackground
         config.separatorConfiguration.topSeparatorInsets = TimelineStatusCollectionViewCell.separatorInsets
@@ -40,11 +42,25 @@ class AccountListViewController: UIViewController, CollectionViewController {
             section.readableContentInset(in: environment)
             return section
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+
         dataSource = createDataSource()
+
+        var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
+        snapshot.appendSections([.accounts])
+        snapshot.appendItems(accountIDs)
+        dataSource.apply(snapshot, animatingDifferences: false)
     }
     
     private func createDataSource() -> UICollectionViewDiffableDataSource<Section, Item> {
@@ -57,15 +73,6 @@ class AccountListViewController: UIViewController, CollectionViewController {
         }
     }
 
-    override func viewDidLoad() {
-        super.viewDidLoad()
-
-        var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
-        snapshot.appendSections([.accounts])
-        snapshot.appendItems(accountIDs)
-        dataSource.apply(snapshot, animatingDifferences: false)
-    }
-    
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         

Tusker/Screens/Conversation/ConversationCollectionViewController.swift

@@ -19,9 +19,7 @@ class ConversationCollectionViewController: UIViewController, CollectionViewCont
     var statusIDToScrollToOnLoad: String
     var showStatusesAutomatically = false
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     init(for mainStatusID: String, state: CollapseState, conversationViewController: ConversationViewController) {
@@ -38,7 +36,9 @@ class ConversationCollectionViewController: UIViewController, CollectionViewCont
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
         config.backgroundColor = .appSecondaryBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
@@ -66,12 +66,18 @@ class ConversationCollectionViewController: UIViewController, CollectionViewCont
             return section
         }
         viewRespectsSystemMinimumLayoutMargins = false
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
-        // something about the autoresizing mask breaks resizing the vc
-        view.translatesAutoresizingMaskIntoConstraints = false
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         #if !targetEnvironment(macCatalyst)
         collectionView.refreshControl = UIRefreshControl()

Tusker/Screens/Explore/ExploreViewController.swift

@@ -48,11 +48,17 @@ class ExploreViewController: UIViewController, UICollectionViewDelegate, Collect
         configuration.headerMode = .supplementary
         let layout = UICollectionViewCompositionalLayout.list(using: configuration)
         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
-        collectionView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         dataSource = createDataSource()
         applyInitialSnapshot()

Tusker/Screens/Explore/FeaturedProfileCollectionViewCell.swift

@@ -1,152 +0,0 @@
-//
-//  FeaturedProfileCollectionViewCell.swift
-//  Tusker
-//
-//  Created by Shadowfacts on 2/6/21.
-//  Copyright © 2021 Shadowfacts. All rights reserved.
-//
-
-import UIKit
-import Pachyderm
-
-class FeaturedProfileCollectionViewCell: UICollectionViewCell {
-
-    @IBOutlet weak var clippingView: UIView!
-    @IBOutlet weak var headerImageView: UIImageView!
-    @IBOutlet weak var avatarContainerView: UIView!
-    @IBOutlet weak var avatarImageView: UIImageView!
-    @IBOutlet weak var displayNameLabel: AccountDisplayNameLabel!
-    @IBOutlet weak var noteTextView: StatusContentTextView!
-    
-    var account: Account?
-    
-    private var accountImagesTask: Task<Void, Never>?
-    
-    deinit {
-        accountImagesTask?.cancel()
-    }
-    
-    override func awakeFromNib() {
-        super.awakeFromNib()
-        
-        avatarContainerView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarContainerView)
-        avatarContainerView.layer.cornerCurve = .continuous
-        avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
-        avatarImageView.layer.cornerCurve = .continuous
-        
-        displayNameLabel.font = UIFontMetrics(forTextStyle: .title1).scaledFont(for: .systemFont(ofSize: 20, weight: .semibold))
-        displayNameLabel.adjustsFontForContentSizeCategory = true
-        
-        noteTextView.adjustsFontForContentSizeCategory = true
-        noteTextView.textContainer.lineBreakMode = .byTruncatingTail
-        noteTextView.textContainerInset = UIEdgeInsets(top: 16, left: 4, bottom: 16, right: 4)
-        
-        backgroundColor = .clear
-        clippingView.backgroundColor = .appBackground
-        clippingView.layer.cornerRadius = 5
-        clippingView.layer.cornerCurve = .continuous
-        clippingView.layer.borderWidth = 1
-        clippingView.layer.masksToBounds = true
-        layer.shadowOpacity = 0.2
-        layer.shadowRadius = 8
-        layer.shadowOffset = .zero
-        layer.masksToBounds = false
-        updateLayerColors()
-        
-        NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
-    }
-    
-    func updateUI(account: Account) {
-        self.account = account
-        
-        displayNameLabel.updateForAccountDisplayName(account: account)
-        
-        noteTextView.setBodyTextFromHTML(account.note)
-        noteTextView.setEmojis(account.emojis, identifier: account.id)
-        
-        avatarImageView.image = nil
-        headerImageView.image = nil
-        
-        accountImagesTask?.cancel()
-        accountImagesTask = Task {
-            await updateImages(account: account)
-        }
-    }
-    
-    private nonisolated func updateImages(account: Account) async {
-        await withTaskGroup(of: Void.self) { group in
-            group.addTask {
-                guard let avatar = account.avatar,
-                      let image = await ImageCache.avatars.get(avatar).1 else {
-                    return
-                }
-                await MainActor.run {
-                    self.avatarImageView.image = image
-                }
-            }
-            group.addTask {
-                guard let header = account.header,
-                      let image = await ImageCache.headers.get(header).1 else {
-                    return
-                }
-                await MainActor.run {
-                    self.headerImageView.image = image
-                }
-            }
-            await group.waitForAll()
-        }
-    }
-    
-    private func updateLayerColors() {
-        if traitCollection.userInterfaceStyle == .dark {
-            clippingView.layer.borderColor = UIColor.darkGray.withAlphaComponent(0.5).cgColor
-            layer.shadowColor = UIColor.darkGray.cgColor
-        } else {
-            clippingView.layer.borderColor = UIColor.lightGray.withAlphaComponent(0.5).cgColor
-            layer.shadowColor = UIColor.black.cgColor
-        }
-    }
-    
-    // Unneeded on visionOS because there is no light/dark mode
-    #if !os(visionOS)
-    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
-        super.traitCollectionDidChange(previousTraitCollection)
-        updateLayerColors()
-    }
-    #endif
-    
-    override func layoutSubviews() {
-        super.layoutSubviews()
-        
-        layer.shadowPath = CGPath(roundedRect: bounds, cornerWidth: 5, cornerHeight: 5, transform: nil)
-    }
-    
-    @objc private func preferencesChanged() {
-        avatarContainerView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarContainerView)
-        avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
-        
-        if let account = account {
-            displayNameLabel.updateForAccountDisplayName(account: account)
-        }
-    }
-    
-    // MARK: Accessibility
-    
-    override var isAccessibilityElement: Bool {
-        get { true }
-        set {}
-    }
-    
-    override var accessibilityAttributedLabel: NSAttributedString? {
-        get {
-            guard let account else {
-                return nil
-            }
-            let s = NSMutableAttributedString(string: "\(account.displayNameWithoutCustomEmoji), ")
-            s.append(noteTextView.attributedText)
-            return s
-        }
-        set {}
-    }
-    
-}

Tusker/Screens/Explore/FeaturedProfileCollectionViewCell.xib

@@ -1,113 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="21701" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
-    <device id="retina6_1" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="21678"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="System colors in document resources" minToolsVersion="11.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <objects>
-        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
-        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
-        <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" id="gTV-IL-0wX" customClass="FeaturedProfileCollectionViewCell" customModule="Tusker" customModuleProvider="target">
-            <rect key="frame" x="0.0" y="0.0" width="400" height="200"/>
-            <autoresizingMask key="autoresizingMask"/>
-            <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center">
-                <rect key="frame" x="0.0" y="0.0" width="400" height="200"/>
-                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                <subviews>
-                    <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="YkJ-rV-f3C">
-                        <rect key="frame" x="0.0" y="0.0" width="400" height="200"/>
-                        <subviews>
-                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="bo4-Sd-caI">
-                                <rect key="frame" x="0.0" y="0.0" width="400" height="66"/>
-                                <color key="backgroundColor" systemColor="systemGray5Color"/>
-                                <constraints>
-                                    <constraint firstAttribute="height" constant="66" id="9Aa-Up-chJ"/>
-                                </constraints>
-                            </imageView>
-                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="RQe-uE-TEv">
-                                <rect key="frame" x="8" y="34" width="64" height="64"/>
-                                <subviews>
-                                    <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="4wd-wq-Sh2">
-                                        <rect key="frame" x="2" y="2" width="60" height="60"/>
-                                        <constraints>
-                                            <constraint firstAttribute="width" constant="60" id="Xyl-Ry-J3r"/>
-                                            <constraint firstAttribute="width" secondItem="4wd-wq-Sh2" secondAttribute="height" multiplier="1:1" id="YEc-fT-FRB"/>
-                                        </constraints>
-                                    </imageView>
-                                </subviews>
-                                <color key="backgroundColor" systemColor="systemBackgroundColor"/>
-                                <constraints>
-                                    <constraint firstAttribute="width" secondItem="RQe-uE-TEv" secondAttribute="height" multiplier="1:1" id="4vR-IF-yS8"/>
-                                    <constraint firstAttribute="width" secondItem="4wd-wq-Sh2" secondAttribute="width" constant="4" id="52Q-zq-k28"/>
-                                    <constraint firstItem="4wd-wq-Sh2" firstAttribute="centerY" secondItem="RQe-uE-TEv" secondAttribute="centerY" id="Ped-H7-QtP"/>
-                                    <constraint firstItem="4wd-wq-Sh2" firstAttribute="centerX" secondItem="RQe-uE-TEv" secondAttribute="centerX" id="bRk-uJ-JGg"/>
-                                </constraints>
-                            </view>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Display name" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" minimumFontSize="10" adjustsLetterSpacingToFitWidth="YES" translatesAutoresizingMaskIntoConstraints="NO" id="voW-Is-1b2" customClass="AccountDisplayNameLabel" customModule="Tusker" customModuleProvider="target">
-                                <rect key="frame" x="76" y="72" width="316" height="24"/>
-                                <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="20"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <textView clipsSubviews="YES" multipleTouchEnabled="YES" userInteractionEnabled="NO" contentMode="scaleToFill" verticalCompressionResistancePriority="749" scrollEnabled="NO" editable="NO" textAlignment="natural" selectable="NO" translatesAutoresizingMaskIntoConstraints="NO" id="bvj-F0-ggC" customClass="StatusContentTextView" customModule="Tusker" customModuleProvider="target">
-                                <rect key="frame" x="8" y="102" width="384" height="98"/>
-                                <string key="text">Lorem ipsum dolor sit er elit lamet, consectetaur cillium adipisicing pecu, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Nam liber te conscient to factor tum poen legum odioque civiuda.</string>
-                                <color key="textColor" systemColor="labelColor"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
-                                <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
-                            </textView>
-                        </subviews>
-                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
-                        <constraints>
-                            <constraint firstAttribute="trailing" secondItem="bvj-F0-ggC" secondAttribute="trailing" constant="8" id="1sd-Df-jR1"/>
-                            <constraint firstItem="bvj-F0-ggC" firstAttribute="leading" secondItem="YkJ-rV-f3C" secondAttribute="leading" constant="8" id="35h-Wh-fvk"/>
-                            <constraint firstItem="voW-Is-1b2" firstAttribute="top" relation="greaterThanOrEqual" secondItem="bo4-Sd-caI" secondAttribute="bottom" id="39l-yo-g8V"/>
-                            <constraint firstItem="bo4-Sd-caI" firstAttribute="leading" secondItem="YkJ-rV-f3C" secondAttribute="leading" id="3lQ-uN-93N"/>
-                            <constraint firstAttribute="trailing" secondItem="voW-Is-1b2" secondAttribute="trailing" constant="8" id="Ckp-Bq-lB5"/>
-                            <constraint firstItem="bo4-Sd-caI" firstAttribute="top" secondItem="YkJ-rV-f3C" secondAttribute="top" id="DWh-S5-PLQ"/>
-                            <constraint firstAttribute="bottom" secondItem="bvj-F0-ggC" secondAttribute="bottom" id="MH3-7E-THx"/>
-                            <constraint firstItem="RQe-uE-TEv" firstAttribute="leading" secondItem="YkJ-rV-f3C" secondAttribute="leading" constant="8" id="Tzo-aN-Bxq"/>
-                            <constraint firstItem="voW-Is-1b2" firstAttribute="bottom" secondItem="4wd-wq-Sh2" secondAttribute="bottom" id="Wk6-u2-azz"/>
-                            <constraint firstItem="RQe-uE-TEv" firstAttribute="centerY" secondItem="bo4-Sd-caI" secondAttribute="bottom" id="bon-bj-qnk"/>
-                            <constraint firstItem="bvj-F0-ggC" firstAttribute="top" secondItem="RQe-uE-TEv" secondAttribute="bottom" constant="4" id="dyg-LN-BDn"/>
-                            <constraint firstItem="voW-Is-1b2" firstAttribute="leading" secondItem="RQe-uE-TEv" secondAttribute="trailing" constant="4" id="shC-67-vC2"/>
-                            <constraint firstAttribute="trailing" secondItem="bo4-Sd-caI" secondAttribute="trailing" id="wZn-gO-zue"/>
-                        </constraints>
-                    </view>
-                </subviews>
-            </view>
-            <viewLayoutGuide key="safeArea" id="ZTg-uK-7eu"/>
-            <color key="backgroundColor" systemColor="systemBackgroundColor"/>
-            <constraints>
-                <constraint firstAttribute="trailing" secondItem="YkJ-rV-f3C" secondAttribute="trailing" id="Dy3-h1-zfM"/>
-                <constraint firstItem="YkJ-rV-f3C" firstAttribute="leading" secondItem="gTV-IL-0wX" secondAttribute="leading" id="Gld-3x-oE0"/>
-                <constraint firstItem="YkJ-rV-f3C" firstAttribute="top" secondItem="gTV-IL-0wX" secondAttribute="top" id="NIV-n8-4Rl"/>
-                <constraint firstAttribute="bottom" secondItem="YkJ-rV-f3C" secondAttribute="bottom" id="zNw-2z-Hlx"/>
-            </constraints>
-            <connections>
-                <outlet property="avatarContainerView" destination="RQe-uE-TEv" id="tBI-fT-26P"/>
-                <outlet property="avatarImageView" destination="4wd-wq-Sh2" id="rba-cv-8fb"/>
-                <outlet property="clippingView" destination="YkJ-rV-f3C" id="hLI-4z-yIc"/>
-                <outlet property="displayNameLabel" destination="voW-Is-1b2" id="XVS-4d-PKx"/>
-                <outlet property="headerImageView" destination="bo4-Sd-caI" id="YkL-Wi-BXb"/>
-                <outlet property="noteTextView" destination="bvj-F0-ggC" id="Bbm-ai-bu1"/>
-            </connections>
-            <point key="canvasLocation" x="535" y="428"/>
-        </collectionViewCell>
-    </objects>
-    <resources>
-        <systemColor name="labelColor">
-            <color red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-        </systemColor>
-        <systemColor name="systemBackgroundColor">
-            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-        </systemColor>
-        <systemColor name="systemGray5Color">
-            <color red="0.89803921568627454" green="0.89803921568627454" blue="0.91764705882352937" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-        </systemColor>
-    </resources>
-</document>

Tusker/Screens/Explore/SuggestedProfilesViewController.swift

@@ -46,8 +46,8 @@ class SuggestedProfilesViewController: UIViewController, CollectionViewControlle
         collectionView.allowsFocus = true
         view.addSubview(collectionView)
         NSLayoutConstraint.activate([
-            collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
-            collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
             collectionView.topAnchor.constraint(equalTo: view.topAnchor),
             collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
         ])

Tusker/Screens/Explore/TrendingHashtagsViewController.swift

@@ -53,11 +53,17 @@ class TrendingHashtagsViewController: UIViewController, CollectionViewController
         }
         let layout = UICollectionViewCompositionalLayout.list(using: config)
         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
-        collectionView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         let loadingCell = UICollectionView.CellRegistration<LoadingCollectionViewCell, Void> { cell, indexPath, itemIdentifier in
             cell.indicator.startAnimating()

Tusker/Screens/Explore/TrendingLinksViewController.swift

@@ -40,6 +40,8 @@ class TrendingLinksViewController: UIViewController, CollectionViewController {
 
         title = NSLocalizedString("Trending Links", comment: "trending links screen title")
         
+        view.backgroundColor = .appGroupedBackground
+        
         let layout = UICollectionViewCompositionalLayout { [unowned self] sectionIndex, environment in
             switch dataSource.sectionIdentifier(for: sectionIndex) {
             case nil:
@@ -80,8 +82,8 @@ class TrendingLinksViewController: UIViewController, CollectionViewController {
         collectionView.allowsFocus = true
         view.addSubview(collectionView)
         NSLayoutConstraint.activate([
-            collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
-            collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
             collectionView.topAnchor.constraint(equalTo: view.topAnchor),
             collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
         ])

Tusker/Screens/Explore/TrendingStatusesViewController.swift

@@ -14,9 +14,7 @@ class TrendingStatusesViewController: UIViewController, CollectionViewController
     private let mastodonController: MastodonController
     let filterer: Filterer
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     private var loaded = false
@@ -34,7 +32,9 @@ class TrendingStatusesViewController: UIViewController, CollectionViewController
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
             (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.leadingSwipeActions()
@@ -62,12 +62,22 @@ class TrendingStatusesViewController: UIViewController, CollectionViewController
             section.readableContentInset(in: environment)
             return section
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         dataSource = createDataSource()
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(handleStatusDeleted), name: .statusDeleted, object: mastodonController)
     }
     
     private func createDataSource() -> UICollectionViewDiffableDataSource<Section, Item> {
@@ -96,12 +106,6 @@ class TrendingStatusesViewController: UIViewController, CollectionViewController
         }
     }
     
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        
-        NotificationCenter.default.addObserver(self, selector: #selector(handleStatusDeleted), name: .statusDeleted, object: mastodonController)
-    }
-
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         

Tusker/Screens/Explore/TrendsViewController.swift

@@ -45,6 +45,8 @@ class TrendsViewController: UIViewController, CollectionViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         
+        view.backgroundColor = .appGroupedBackground
+
         let layout = UICollectionViewCompositionalLayout { [unowned self] sectionIndex, environment in
             let sectionIdentifier = self.dataSource.snapshot().sectionIdentifiers[sectionIndex]
             switch sectionIdentifier {
@@ -114,12 +116,18 @@ class TrendsViewController: UIViewController, CollectionViewController {
             }
         }
         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
-        collectionView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.backgroundColor = .appGroupedBackground
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         dataSource = createDataSource()
         

Tusker/Screens/Fast Account Switcher/FastAccountSwitcherViewController.swift

@@ -11,6 +11,7 @@ import UserAccounts
 
 @MainActor
 protocol FastAccountSwitcherViewControllerDelegate: AnyObject {
+    func fastAccountSwitcherItemOrientation(_ fastAccountSwitcher: FastAccountSwitcherViewController) -> FastAccountSwitcherViewController.ItemOrientation
     func fastAccountSwitcherAddToViewHierarchy(_ fastAccountSwitcher: FastAccountSwitcherViewController)
     /// - Parameter point: In the coordinate space of the view to which the pan gesture recognizer is attached.
     func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool
@@ -31,7 +32,7 @@ class FastAccountSwitcherViewController: UIViewController {
     #endif
     private var touchBeganFeedbackWorkItem: DispatchWorkItem?
     
-    var itemOrientation: ItemOrientation = .iconsTrailing
+    private var itemOrientation: ItemOrientation = .iconsTrailing
     
     init() {
         super.init(nibName: "FastAccountSwitcherViewController", bundle: .main)
@@ -60,6 +61,9 @@ class FastAccountSwitcherViewController: UIViewController {
     }
     
     func show() {
+        if let delegate {
+            itemOrientation = delegate.fastAccountSwitcherItemOrientation(self)
+        }
         createAccountViews()
         // add after creating account views so that the presenter can align based on them
         delegate?.fastAccountSwitcherAddToViewHierarchy(self)

Tusker/Screens/Local Predicate Statuses List/LocalPredicateStatusesViewController.swift

@@ -19,9 +19,7 @@ class LocalPredicateStatusesViewController: UIViewController, CollectionViewCont
     private let predicateTitle: String
     private let request: (RequestRange) -> Request<[TryDecode<Status>]>
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     private var state = State.unloaded
@@ -43,7 +41,9 @@ class LocalPredicateStatusesViewController: UIViewController, CollectionViewCont
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
         config.backgroundColor = .appBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
@@ -71,12 +71,30 @@ class LocalPredicateStatusesViewController: UIViewController, CollectionViewCont
             section.readableContentInset(in: environment)
             return section
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         dataSource = createDataSource()
+        
+        #if !targetEnvironment(macCatalyst)
+        collectionView.refreshControl = UIRefreshControl()
+        collectionView.refreshControl!.addTarget(self, action: #selector(refresh), for: .valueChanged)
+        #endif
+        
+        addKeyCommand(MenuController.refreshCommand(discoverabilityTitle: "Refresh \(predicateTitle)"))
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(handleStatusDeleted), name: .statusDeleted, object: mastodonController)
+        NotificationCenter.default.addObserver(self, selector: #selector(managedObjectsDidChange), name: .NSManagedObjectContextObjectsDidChange, object: mastodonController.persistentContainer.viewContext)
     }
     
     private func createDataSource() -> UICollectionViewDiffableDataSource<Section, Item> {
@@ -97,20 +115,6 @@ class LocalPredicateStatusesViewController: UIViewController, CollectionViewCont
         }
     }
     
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        
-        #if !targetEnvironment(macCatalyst)
-        collectionView.refreshControl = UIRefreshControl()
-        collectionView.refreshControl!.addTarget(self, action: #selector(refresh), for: .valueChanged)
-        #endif
-        
-        addKeyCommand(MenuController.refreshCommand(discoverabilityTitle: "Refresh \(predicateTitle)"))
-        
-        NotificationCenter.default.addObserver(self, selector: #selector(handleStatusDeleted), name: .statusDeleted, object: mastodonController)
-        NotificationCenter.default.addObserver(self, selector: #selector(managedObjectsDidChange), name: .NSManagedObjectContextObjectsDidChange, object: mastodonController.persistentContainer.viewContext)
-    }
-    
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         

Tusker/Screens/Main/AccountSwitchingContainerViewController.swift

@@ -39,7 +39,16 @@ class AccountSwitchingContainerViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        embedChild(root)
+        addChild(root)
+        root.view.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(root.view)
+        NSLayoutConstraint.activate([
+            root.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            root.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            root.view.topAnchor.constraint(equalTo: view.topAnchor),
+            root.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        root.didMove(toParent: self)
     }
     
     override func didReceiveMemoryWarning() {

Tusker/Screens/Main/BaseMainTabBarViewController.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 
-class BaseMainTabBarViewController: UITabBarController {
+class BaseMainTabBarViewController: UITabBarController, FastAccountSwitcherViewControllerDelegate {
     
     let mastodonController: MastodonController
     
@@ -71,11 +71,12 @@ class BaseMainTabBarViewController: UITabBarController {
     
     private func repositionFastSwitcherIndicator() {
         guard let myProfileButton = findMyProfileTabBarButton(),
-              myProfileButton.window != nil else {
+              myProfileButton.window != nil,
+              let fastSwitcherIndicator else {
             fastSwitcherIndicator?.isHidden = true
             return
         }
-        fastSwitcherIndicator?.isHidden = false
+        fastSwitcherIndicator.isHidden = false
         NSLayoutConstraint.deactivate(fastSwitcherConstraints)
         let isPortrait = view.bounds.width < view.bounds.height
         if traitCollection.horizontalSizeClass == .compact && isPortrait {
@@ -114,11 +115,14 @@ class BaseMainTabBarViewController: UITabBarController {
     }
     #endif // !os(visionOS)
     
-}
+    // MARK: FastAccountSwitcherViewControllerDelegate
+    
+    func fastAccountSwitcherItemOrientation(_ fastAccountSwitcher: FastAccountSwitcherViewController) -> FastAccountSwitcherViewController.ItemOrientation {
+        return .iconsTrailing
+    }
     
-#if !os(visionOS)
-extension BaseMainTabBarViewController: FastAccountSwitcherViewControllerDelegate {
     func fastAccountSwitcherAddToViewHierarchy(_ fastAccountSwitcher: FastAccountSwitcherViewController) {
+        #if !os(visionOS)
         fastAccountSwitcher.view.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(fastAccountSwitcher.view)
         NSLayoutConstraint.activate([
@@ -133,17 +137,21 @@ extension BaseMainTabBarViewController: FastAccountSwitcherViewControllerDelegat
             fastAccountSwitcher.view.safeAreaLayoutGuide.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
             fastAccountSwitcher.view.safeAreaLayoutGuide.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
         ])
+        #endif // !os(visionOS)
     }
     
     func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool {
+        #if !os(visionOS)
         guard let myProfileButton = findMyProfileTabBarButton() else {
             return false
         }
         let locationInButton = myProfileButton.convert(point, from: tabBar)
         return myProfileButton.bounds.contains(locationInButton)
+        #else
+        return false
+        #endif // !os(visionOS)
     }
 }
-#endif // !os(visionOS)
 
 extension BaseMainTabBarViewController: TuskerNavigationDelegate {
     var apiController: MastodonController! { mastodonController }
@@ -156,7 +164,7 @@ extension BaseMainTabBarViewController: StateRestorableViewController {
            let compose = presentedNav.viewControllers.first as? ComposeHostingController {
             let draft = compose.controller.draft
             activity = UserActivityManager.editDraftActivity(id: draft.id, accountID: draft.accountID)
-        } else if let vc = (selectedViewController as! UINavigationController).topViewController as? StateRestorableViewController {
+        } else if let vc = (selectedViewController as? any NavigationControllerProtocol)?.topViewController as? StateRestorableViewController {
             activity = vc.stateRestorationActivity()
         }
         if activity == nil {

Tusker/Screens/Main/MainSidebarMyProfileCollectionViewCell.swift

@@ -11,14 +11,14 @@ import UserAccounts
 
 class MainSidebarMyProfileCollectionViewCell: UICollectionViewListCell {
     
-    private var verticalImageInset: CGFloat {
+    static var verticalImageInset: CGFloat {
         if UIDevice.current.userInterfaceIdiom == .mac {
             return (28 - avatarImageSize) / 2
         } else {
             return (44 - avatarImageSize) / 2
         }
     }
-    private var avatarImageSize: CGFloat {
+    static var avatarImageSize: CGFloat {
         if UIDevice.current.userInterfaceIdiom == .mac {
             return 20
         } else {
@@ -72,11 +72,11 @@ class MainSidebarMyProfileCollectionViewCell: UICollectionViewListCell {
                     return
                 }
                 config.image = image
-                config.directionalLayoutMargins.top = self.verticalImageInset
+                config.directionalLayoutMargins.top = MainSidebarMyProfileCollectionViewCell.verticalImageInset
-                config.directionalLayoutMargins.bottom = self.verticalImageInset
+                config.directionalLayoutMargins.bottom = MainSidebarMyProfileCollectionViewCell.verticalImageInset
-                config.imageProperties.maximumSize = CGSize(width: self.avatarImageSize, height: self.avatarImageSize)
+                config.imageProperties.maximumSize = CGSize(width: MainSidebarMyProfileCollectionViewCell.avatarImageSize, height: MainSidebarMyProfileCollectionViewCell.avatarImageSize)
                 config.imageProperties.reservedLayoutSize = CGSize(width: UIListContentConfiguration.ImageProperties.standardDimension, height: 0)
-                config.imageProperties.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * self.avatarImageSize
+                config.imageProperties.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * MainSidebarMyProfileCollectionViewCell.avatarImageSize
                 self.contentConfiguration = config
             }
         }
@@ -86,7 +86,7 @@ class MainSidebarMyProfileCollectionViewCell: UICollectionViewListCell {
         guard var config = self.contentConfiguration as? UIListContentConfiguration else {
             return
         }
-        config.imageProperties.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * avatarImageSize
+        config.imageProperties.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * MainSidebarMyProfileCollectionViewCell.avatarImageSize
         self.contentConfiguration = config
     }
     

Tusker/Screens/Main/MainSidebarViewController.swift

@@ -269,8 +269,9 @@ class MainSidebarViewController: UIViewController {
     }
 
     private func showAddList() {
-        let service = CreateListService(mastodonController: mastodonController, present: { self.present($0, animated: true
+        let service = CreateListService(mastodonController: mastodonController, present: {
-        ) }) { list in
+            self.present($0, animated: true)
+        }) { list in
             let oldItem = self.selectedItem
             self.select(item: .list(list), animated: false)
             let list = ListTimelineViewController(for: list, mastodonController: self.mastodonController)
@@ -370,7 +371,7 @@ extension MainSidebarViewController {
             case let .savedInstance(url):
                 return url.host!
             case .addSavedInstance:
-                return "Find An Instance..."
+                return "Find an Instance..."
             }
         }
         

Tusker/Screens/Main/MainSplitViewController.swift

@@ -93,7 +93,6 @@ class MainSplitViewController: UISplitViewController {
         if UIDevice.current.userInterfaceIdiom != .mac {
             let switcher = FastAccountSwitcherViewController()
             fastAccountSwitcher = switcher
-            switcher.itemOrientation = .iconsLeading
             switcher.view.translatesAutoresizingMaskIntoConstraints = false
             switcher.delegate = self
             // accessing .view unconditionally loads the view, which we don't want to happen
@@ -664,6 +663,10 @@ extension MainSplitViewController: BackgroundableViewController {
 }
 
 extension MainSplitViewController: FastAccountSwitcherViewControllerDelegate {
+    func fastAccountSwitcherItemOrientation(_ fastAccountSwitcher: FastAccountSwitcherViewController) -> FastAccountSwitcherViewController.ItemOrientation {
+        return .iconsLeading
+    }
+    
     func fastAccountSwitcherAddToViewHierarchy(_ fastAccountSwitcher: FastAccountSwitcherViewController) {
         view.addSubview(fastAccountSwitcher.view)
         let currentAccount = fastAccountSwitcher.accountViews.first(where: \.isCurrent)!
@@ -677,6 +680,7 @@ extension MainSplitViewController: FastAccountSwitcherViewControllerDelegate {
             fastAccountSwitcher.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
         ])
     }
+    
     func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool {
         guard !isCollapsed,
               let cell = sidebar.myProfileCell() else {

Tusker/Screens/Main/NewMainTabBarViewController.swift

@@ -7,12 +7,33 @@
 //
 
 import UIKit
+import Combine
+import Pachyderm
+import TuskerPreferences
 
 @available(iOS 18.0, *)
-class NewMainTabBarViewController: BaseMainTabBarViewController {
+final class NewMainTabBarViewController: BaseMainTabBarViewController {
     
     private let composePlaceholder = UIViewController()
     
+    private var homeTab: UITab!
+    private var notificationsTab: UITab!
+    private var composeTab: UITab!
+    private var exploreTab: UITab!
+    private var bookmarksTab: UITab!
+    private var favoritesTab: UITab!
+    private var myProfileTab: UITab!
+    private var listsGroup: UITabGroup!
+    private var hashtagsGroup: UITabGroup!
+    private var instancesGroup: UITabGroup!
+    
+    private var cancellables = Set<AnyCancellable>()
+    
+    private var navigationStacks = [String: [UIViewController]]()
+    private var isCompact: Bool?
+    @Box fileprivate var myProfileCell: UIView?
+    private var sidebarTapRecognizer: UITapGestureRecognizer?
+
     override func viewDidLoad() {
         super.viewDidLoad()
         
@@ -26,21 +47,168 @@ class NewMainTabBarViewController: BaseMainTabBarViewController {
             self.makeViewController(for: tab)
         }
         
-        let topLevelTabs = [
+        homeTab = UITab(title: "Home", image: UIImage(systemName: "house"), identifier: Tab.home.rawValue, viewControllerProvider: viewControllerProvider)
-            Tab.home,
+        notificationsTab = UITab(title: "Notifications", image: UIImage(systemName: "bell"), identifier: Tab.notifications.rawValue, viewControllerProvider: viewControllerProvider)
-            .notifications,
+        composeTab = UITab(title: "Compose", image: UIImage(systemName: "pencil"), identifier: Tab.compose.rawValue, viewControllerProvider: viewControllerProvider)
-            .compose,
+        exploreTab = UITab(title: "Explore", image: UIImage(systemName: "magnifyingglass"), identifier: Tab.explore.rawValue, viewControllerProvider: viewControllerProvider)
-            .explore,
+        bookmarksTab = UITab(title: "Bookmarks", image: UIImage(systemName: "bookmark"), identifier: Tab.bookmarks.rawValue, viewControllerProvider: viewControllerProvider)
-            .myProfile
+        bookmarksTab.preferredPlacement = .optional
-        ].map {
+        favoritesTab = UITab(title: "Favorites", image: UIImage(systemName: "star"), identifier: Tab.favorites.rawValue, viewControllerProvider: viewControllerProvider)
-            UITab(title: $0.title, image: UIImage(systemName: $0.imageName), identifier: $0.rawValue, viewControllerProvider: viewControllerProvider)
+        favoritesTab.preferredPlacement = .optional
+        myProfileTab = MyProfileTab(mastodonController: mastodonController, viewControllerProvider: viewControllerProvider)
+        
+        listsGroup = UITabGroup(title: "Lists", image: nil, identifier: Tab.lists.rawValue, children: []) { _ in
+            // this closure is necessary to prevent UIKit from crashing (FB14860961)
+            return AdaptableNavigationController()
+        }
+        listsGroup.preferredPlacement = .sidebarOnly
+        listsGroup.sidebarActions = [
+            UIAction(title: "New List…", image: UIImage(systemName: "plus"), handler: { [unowned self] _ in
+                self.showAddList()
+            })
+        ]
+        reloadLists(mastodonController.lists)
+        
+        hashtagsGroup = UITabGroup(title: "Hashtags", image: nil, identifier: Tab.hashtags.rawValue, children: []) { _ in
+            return AdaptableNavigationController()
+        }
+        hashtagsGroup.preferredPlacement = .sidebarOnly
+        hashtagsGroup.sidebarActions = [
+            UIAction(title: "Add Hashtag…", image: UIImage(systemName: "plus"), handler: { [unowned self] _ in
+                self.showAddSavedHashtag()
+            })
+        ]
+        reloadHashtags()
+        
+        instancesGroup = UITabGroup(title: "Instance Timelines", image: nil, identifier: Tab.instances.rawValue, children: []) { _ in
+            return AdaptableNavigationController()
+        }
+        instancesGroup.preferredPlacement = .sidebarOnly
+        instancesGroup.sidebarActions = [
+            UIAction(title: "Find an Instance…", image: UIImage(systemName: "plus"), handler: { [unowned self] _ in
+                self.showAddSavedInstance()
+            })
+        ]
+        reloadSavedInstances()
+        
+        if UIDevice.current.userInterfaceIdiom == .phone {
+            self.tabs = [
+                homeTab,
+                notificationsTab,
+                composeTab,
+                exploreTab,
+                myProfileTab,
+            ]
+        } else {
+            self.updatePadTabs()
+            registerForTraitChanges([UITraitHorizontalSizeClass.self]) { (self: NewMainTabBarViewController, previousTraitCollection) in
+                self.updatePadTabs()
+                
+                let vcToUpdate = self.selectedTab!.parent?.viewController ?? self.selectedTab!.viewController!
+                self.updateViewControllerSafeAreaInsets(vcToUpdate)
             }
             
-        self.tabs = topLevelTabs
+            mastodonController.$lists
+                .sink { [unowned self] in self.reloadLists($0) }
+                .store(in: &cancellables)
+            
+            mastodonController.$followedHashtags
+                .map { _ in () }
+                .merge(with: NotificationCenter.default.publisher(for: .savedHashtagsChanged).map { _ in () })
+                .sink { [unowned self] in self.reloadHashtags() }
+                .store(in: &cancellables)
+            
+            NotificationCenter.default.addObserver(self, selector: #selector(reloadSavedInstances), name: .savedInstancesChanged, object: nil)
+        }
         
         setupFastAccountSwitcher()
     }
     
+    private func updatePadTabs() {
+        let wasCompact = isCompact
+        
+        if self.traitCollection.horizontalSizeClass == .compact {
+            isCompact = true
+            
+            var exploreNavStack: [UIViewController]? = nil
+            if let parent = selectedTab?.parent,
+               parent === listsGroup || parent === hashtagsGroup || parent === instancesGroup {
+                let nav = parent.viewController as! any NavigationControllerProtocol
+                exploreNavStack = nav.viewControllers
+                nav.viewControllers = []
+            }
+            
+            self.tabs = [
+                homeTab,
+                notificationsTab,
+                composeTab,
+                exploreTab,
+                myProfileTab,
+            ]
+            
+            if let exploreNavStack {
+                selectedTab = exploreTab
+                let nav = exploreTab.viewController as! any NavigationControllerProtocol
+                nav.viewControllers = exploreNavStack
+            }
+        } else {
+            isCompact = false
+            
+            var newTabAndNavigationStack: (UITab, [UIViewController])? = nil
+            if wasCompact == true,
+               selectedTab == exploreTab {
+                let nav = exploreTab.viewController as! any NavigationControllerProtocol
+                // skip over the ExploreViewController
+                if nav.viewControllers.count > 1 {
+                    var newTab: UITab?
+                    switch nav.viewControllers[1] {
+                    case let listVC as ListTimelineViewController:
+                        if let tab = listsGroup.tab(forIdentifier: ListTab.identifier(for: listVC.list)) {
+                            newTab = tab
+                        }
+                    case let hashtagVC as HashtagTimelineViewController:
+                        if let tab = hashtagsGroup.tab(forIdentifier: HashtagTab.identifier(for: hashtagVC.hashtagName)) {
+                            newTab = tab
+                        }
+                    default:
+                        break
+                    }
+                    
+                    if let newTab {
+                        newTabAndNavigationStack = (newTab, Array(nav.viewControllers[1...]))
+                        nav.viewControllers = [
+                            nav.viewControllers[0], // leave the ExploreVC in place
+                            InlineTrendsViewController(mastodonController: mastodonController), // re-insert an InlineTrendsVC
+                        ]
+                    }
+                }
+            }
+            
+            self.tabs = [
+                homeTab,
+                notificationsTab,
+                exploreTab,
+                bookmarksTab,
+                favoritesTab,
+                myProfileTab,
+                composeTab,
+                listsGroup,
+                hashtagsGroup,
+                instancesGroup,
+            ]
+            
+            if let (tab, navStack) = newTabAndNavigationStack {
+                let nav = tab.parent!.viewController as! any NavigationControllerProtocol
+                nav.viewControllers = navStack
+                // Setting the tab now seems to be clobbered by the UITabBarController itself updating in response
+                // to the size class change. So wait until it finishes to do so.
+                DispatchQueue.main.async {
+                    self.selectedTab = tab
+                }
+            }
+        }
+    }
+    
     private func makeViewController(for tab: UITab) -> UIViewController {
         guard let tab = Tab(rawValue: tab.identifier) else {
             fatalError("unreachable")
@@ -54,37 +222,183 @@ class NewMainTabBarViewController: BaseMainTabBarViewController {
         case .compose:
             return composePlaceholder
         case .explore:
+            if UIDevice.current.userInterfaceIdiom == .phone {
                 root = ExploreViewController(mastodonController: mastodonController)
+            } else {
+                let nav = AdaptableNavigationController(viewControllersToPrependInCompact: [
+                    ExploreViewController(mastodonController: mastodonController)
+                ])
+                nav.viewControllers = [InlineTrendsViewController(mastodonController: mastodonController)]
+                return nav
+            }
+        case .bookmarks:
+            root = BookmarksViewController(mastodonController: mastodonController)
+        case .favorites:
+            root = FavoritesViewController(mastodonController: mastodonController)
         case .myProfile:
             root = MyProfileViewController(mastodonController: mastodonController)
+        case .lists, .hashtags, .instances:
+            fatalError("unreachable")
         }
-        let nav: any NavigationControllerProtocol
+        return embedInNavigationController(root)
-        if UIDevice.current.userInterfaceIdiom == .phone {
-            nav = EnhancedNavigationViewController()
-        } else {
-            // TODO: need to figure out how to update the navigation controller if the pref changes
-            switch Preferences.shared.widescreenNavigationMode {
-            case .stack:
-                nav = EnhancedNavigationViewController()
-            case .splitScreen:
-                nav = SplitNavigationController()
-            case .multiColumn:
-                nav = MultiColumnNavigationController()
     }
-        }
+    
-        nav.viewControllers = [root]
+    private func embedInNavigationController(_ vc: UIViewController) -> UIViewController {
+        let nav = AdaptableNavigationController()
+        nav.viewControllers = [vc]
         return nav
     }
     
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        
+        if sidebarTapRecognizer == nil,
+           let sidebarView = findSidebarView() {
+            sidebarTapRecognizer = UITapGestureRecognizer(target: self, action: #selector(sidebarTapped))
+            sidebarTapRecognizer!.cancelsTouchesInView = false
+            sidebarView.addGestureRecognizer(sidebarTapRecognizer!)
+        }
+    }
+    
+    private func reloadLists(_ lists: [List]) {
+        let viewControllerProvider = { [unowned self] (tab: UITab) in
+            let tab = tab as! ListTab
+            return ListTimelineViewController(for: tab.list, mastodonController: self.mastodonController)
+        }
+        listsGroup.children = lists.map { list in
+            ListTab(list: list, viewControllerProvider: viewControllerProvider)
+        }
+    }
+    
+    private func reloadHashtags() {
+        let viewControllerProvider = { [unowned self] (tab: UITab) in
+            let tab = tab as! HashtagTab
+            return HashtagTimelineViewController(forNamed: tab.hashtagName, mastodonController: self.mastodonController)
+        }
+        var seenTags: Set<String> = []
+        var tabs: [UITab] = []
+        let savedReq = SavedHashtag.fetchRequest(account: mastodonController.accountInfo!)
+        let saved = (try? mastodonController.persistentContainer.viewContext.fetch(savedReq)) ?? []
+        for hashtag in saved {
+            seenTags.insert(hashtag.name)
+            tabs.append(HashtagTab(hashtagName: hashtag.name, viewControllerProvider: viewControllerProvider))
+        }
+        
+        let followedReq = FollowedHashtag.fetchRequest()
+        let followed = (try? mastodonController.persistentContainer.viewContext.fetch(followedReq)) ?? []
+        for hashtag in followed where !seenTags.contains(hashtag.name) {
+            tabs.append(HashtagTab(hashtagName: hashtag.name, viewControllerProvider: viewControllerProvider))
+        }
+        
+        tabs.sort(using: SemiCaseSensitiveComparator.keyPath(\.title))
+        hashtagsGroup.children = tabs
+    }
+    
+    @objc private func reloadSavedInstances() {
+        let viewControllerProvider = { [unowned self] (tab: UITab) in
+            let tab = tab as! InstanceTab
+            return InstanceTimelineViewController(for: tab.instance.url, parentMastodonController: self.mastodonController)
+        }
+        let req = SavedInstance.fetchRequest(account: mastodonController.accountInfo!)
+        req.sortDescriptors = [NSSortDescriptor(key: "url.host", ascending: true)]
+        let instances = (try? mastodonController.persistentContainer.viewContext.fetch(req).uniques(by: \.url)) ?? []
+        instancesGroup.children = instances.map {
+            InstanceTab(instance: $0, viewControllerProvider: viewControllerProvider)
+        }
+    }
+    
     @objc func handleComposeKeyCommand() {
         compose(editing: nil)
     }
     
-    fileprivate func updateViewControllerSafeAreaInsets(_ vc: MultiColumnNavigationController) {
+    @objc private func sidebarTapped() {
+        fastAccountSwitcher?.hide()
+    }
+    
+    private func showAddList() {
+        let service = CreateListService(mastodonController: mastodonController, present: {
+            self.present($0, animated: true)
+        }) { list in
+            let tab = self.listsGroup.tab(forIdentifier: ListTab.identifier(for: list))!
+            let listVC = tab.viewController as! ListTimelineViewController
+            listVC.presentEditOnAppear = true
+            self.selectedTab = tab
+        }
+        service.run()
+    }
+    
+    private func showAddSavedHashtag() {
+        let addController = AddSavedHashtagViewController(mastodonController: mastodonController)
+        let nav = EnhancedNavigationViewController(rootViewController: addController)
+        present(nav, animated: true)
+    }
+    
+    private func showAddSavedInstance() {
+        let findController = FindInstanceViewController(parentMastodonController: mastodonController)
+        findController.instanceTimelineDelegate = self
+        let nav = EnhancedNavigationViewController(rootViewController: findController)
+        present(nav, animated: true)
+    }
+    
+    fileprivate func updateViewControllerSafeAreaInsets(_ vc: UIViewController) {
+        guard vc is MultiColumnNavigationController || (vc as? AdaptableNavigationController)?.current is MultiColumnNavigationController else {
+            return
+        }
         // When in sidebar mode, for multi column mode, don't leave an inset for the floating tab bar, because it leaves a massive gap.
         // The floating tab bar seems to always be 88pt tall, regardless of, e.g., Dynamic Type size.
         vc.additionalSafeAreaInsets = UIEdgeInsets(top: sidebar.isHidden ? 0 : -88, left: 0, bottom: 0, right: 0)
     }
+    
+    private func findSidebarView() -> UIView? {
+        var next = myProfileCell
+        while let cur = next {
+            if cur.superview?.superview === self.view {
+                return cur
+            } else {
+                next = cur.superview
+            }
+        }
+        return nil
+    }
+    
+    #if !os(visionOS)
+    override func fastAccountSwitcherItemOrientation(_ fastAccountSwitcher: FastAccountSwitcherViewController) -> FastAccountSwitcherViewController.ItemOrientation {
+        guard !sidebar.isHidden,
+              myProfileCell != nil else {
+            return super.fastAccountSwitcherItemOrientation(fastAccountSwitcher)
+        }
+        return .iconsLeading
+    }
+    
+    override func fastAccountSwitcherAddToViewHierarchy(_ fastAccountSwitcher: FastAccountSwitcherViewController) {
+        guard !sidebar.isHidden,
+              let myProfileCell else {
+            super.fastAccountSwitcherAddToViewHierarchy(fastAccountSwitcher)
+            return
+        }
+        
+        fastAccountSwitcher.view.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(fastAccountSwitcher.view)
+        
+        let currentAccount = fastAccountSwitcher.accountViews.first(where: \.isCurrent)!
+        NSLayoutConstraint.activate([
+            currentAccount.centerYAnchor.constraint(equalTo: myProfileCell.centerYAnchor),
+            
+            fastAccountSwitcher.view.leadingAnchor.constraint(equalTo: selectedTab!.viewController!.view.safeAreaLayoutGuide.leadingAnchor),
+            fastAccountSwitcher.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            fastAccountSwitcher.view.topAnchor.constraint(equalTo: view.topAnchor),
+            fastAccountSwitcher.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+    }
+    
+    override func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool {
+        guard !sidebar.isHidden,
+              myProfileCell != nil else {
+            return super.fastAccountSwitcher(fastAccountSwitcher, triggerZoneContains: point)
+        }
+        return true
+    }
+    #endif
 }
 
 @available(iOS 18.0, *)
@@ -94,37 +408,13 @@ extension NewMainTabBarViewController {
         case notifications
         case compose
         case explore
+        case bookmarks
+        case favorites
         case myProfile
         
-        var title: String {
+        case lists
-            switch self {
+        case hashtags
-            case .home:
+        case instances
-                "Home"
-            case .notifications:
-                "Notifications"
-            case .compose:
-                "Compose"
-            case .explore:
-                "Explore"
-            case .myProfile:
-                "My Profile"
-            }
-        }
-        
-        var imageName: String {
-            switch self {
-            case .home:
-                "house"
-            case .notifications:
-                "bell"
-            case .compose:
-                "pencil"
-            case .explore:
-                "magnifyingglass"
-            case .myProfile:
-                "person"
-            }
-        }
     }
 }
 
@@ -153,21 +443,148 @@ extension NewMainTabBarViewController: UITabBarControllerDelegate {
     }
     
     func tabBarController(_ tabBarController: UITabBarController, didSelectTab newTab: UITab, previousTab: UITab?) {
-        if let vc = newTab.viewController as? MultiColumnNavigationController {
+        self.updateViewControllerSafeAreaInsets(newTab.viewController!)
-            self.updateViewControllerSafeAreaInsets(vc)
+
+        // All tabs in a tab group deliberately share the same view controller, so we have to do this ourselves.
+        // I think this is pretty unfortunate API design--half the time, the tab bar controller takes care of
+        // this, but the rest of the time it's up to you.
+        // The managingNavigationController API would theoretically solve this, but split-screen/multi-column
+        // nav can't straightforwardly be implemented as UINavigationController subclasses.
+        // Unfortunately this, in turn, means that when switching between tabs in the same group, we don't
+        // get the new transition animation.
+        // This would be much less complicated if the controller just used the individual VCs of items in a group.
+        if let group = newTab.parent,
+           group === listsGroup || group === hashtagsGroup || group === instancesGroup,
+           let nav = group.viewController as? any NavigationControllerProtocol {
+            updateViewControllerSafeAreaInsets(nav)
+            
+            if let previousTab {
+                navigationStacks[previousTab.identifier] = nav.viewControllers
+            }
+            
+            if let existing = navigationStacks[newTab.identifier] {
+                nav.viewControllers = existing
+            } else if let newVC = newTab.viewController {
+                nav.viewControllers = [newVC]
+            } else {
+                fatalError("unreachable")
+            }
         }
     }
 }
 
+private var fastAccountSwitcherIndicator: UIView = {
+    let indicator = FastAccountSwitcherIndicatorView()
+    // need to explicitly set the frame to get it vertically centered
+    indicator.frame = CGRect(origin: .zero, size: indicator.intrinsicContentSize)
+    return indicator
+}()
+
 @available(iOS 18.0, *)
 extension NewMainTabBarViewController: UITabBarController.Sidebar.Delegate {
     func tabBarController(_ tabBarController: UITabBarController, sidebarVisibilityWillChange sidebar: UITabBarController.Sidebar, animator: any UITabBarController.Sidebar.Animating) {
-        if let vc = selectedViewController as? MultiColumnNavigationController {
+        let vc = selectedTab!.parent?.viewController ?? selectedTab!.viewController!
         animator.addAnimations {
             self.updateViewControllerSafeAreaInsets(vc)
             vc.view.layoutIfNeeded()
         }
     }
+    
+    func tabBarController(_ tabBarController: UITabBarController, sidebar: UITabBarController.Sidebar, itemFor request: UITabSidebarItem.Request) -> UITabSidebarItem {
+        let item = UITabSidebarItem(request: request)
+        if case .tab(let tab) = request.content,
+           tab.identifier == Tab.myProfile.rawValue,
+           var config = item.contentConfiguration as? UIListContentConfiguration {
+            config.directionalLayoutMargins.top = MainSidebarMyProfileCollectionViewCell.verticalImageInset
+            config.directionalLayoutMargins.bottom = MainSidebarMyProfileCollectionViewCell.verticalImageInset
+            config.imageProperties.maximumSize = CGSize(width: MainSidebarMyProfileCollectionViewCell.avatarImageSize, height: MainSidebarMyProfileCollectionViewCell.avatarImageSize)
+            config.imageProperties.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * MainSidebarMyProfileCollectionViewCell.avatarImageSize
+            
+            if UIDevice.current.userInterfaceIdiom != .mac {
+                item.accessories = [
+                    .customView(configuration: .init(customView: fastAccountSwitcherIndicator, placement: .trailing()))
+                ]
+                item.contentConfiguration = MyProfileContentConfiguration(wrapped: config, view: $myProfileCell) { [unowned self] in
+                    $0.addGestureRecognizer(self.fastAccountSwitcher.createSwitcherGesture())
+                }
+            } else {
+                item.contentConfiguration = config
+            }
+        }
+        return item
+    }
+    
+    func tabBarController(_ tabBarController: UITabBarController, sidebar: UITabBarController.Sidebar, contextMenuConfigurationFor tab: UITab) -> UIContextMenuConfiguration? {
+        guard let id = mastodonController.accountInfo?.id else {
+            return nil
+        }
+        
+        let activity: NSUserActivity
+        
+        if let listTab = tab as? ListTab {
+            let timelineActivity = UserActivityManager.showTimelineActivity(timeline: .list(id: listTab.list.id), accountID: id)
+            if let timelineActivity {
+                activity = timelineActivity
+            } else {
+                return nil
+            }
+        } else if let hashtagTab = tab as? HashtagTab {
+            let timelineActivity = UserActivityManager.showTimelineActivity(timeline: .tag(hashtag: hashtagTab.hashtagName), accountID: id)
+            if let timelineActivity {
+                activity = timelineActivity
+            } else {
+                return nil
+            }
+        } else if tab is InstanceTab {
+            // don't currently have a scene type for this
+            return nil
+        } else if let tabID = Tab(rawValue: tab.identifier) {
+            switch tabID {
+            case .home:
+                return nil
+            case .notifications:
+                activity = UserActivityManager.checkNotificationsActivity(mode: Preferences.shared.defaultNotificationsMode, accountID: id)
+            case .explore:
+                activity = UserActivityManager.searchActivity(query: nil, accountID: id)
+            case .bookmarks:
+                activity = UserActivityManager.bookmarksActivity(accountID: id)
+            case .favorites:
+                // TODO
+                return nil
+            case .myProfile:
+                // no 'Open in New Window' activity for my profile, because the context menu clashes with the fast account switcher
+                return nil
+            case .compose:
+                activity = UserActivityManager.newPostActivity(accountID: id)
+            case .lists, .hashtags, .instances:
+                return nil
+            }
+        } else {
+            return nil
+        }
+        
+        activity.displaysAuxiliaryScene = true
+        
+        return UIContextMenuConfiguration(actionProvider: { _ in
+            var actions: [UIAction] = [
+                UIWindowScene.ActivationAction({ action in
+                    return UIWindowScene.ActivationConfiguration(userActivity: activity)
+                })
+            ]
+            
+            if let listTab = tab as? ListTab {
+                actions.append(UIAction(title: "Delete List", image: UIImage(systemName: "trash"), attributes: .destructive, handler: { [unowned self] _ in
+                    Task {
+                        let service = DeleteListService(list: listTab.list, mastodonController: self.mastodonController) {
+                            self.present($0, animated: true)
+                        }
+                        await service.run()
+                    }
+                }))
+            }
+            
+            return UIMenu(children: actions)
+        })
     }
 }
 
@@ -259,3 +676,152 @@ extension NewMainTabBarViewController: AccountSwitchableViewController {
         #endif
     }
 }
+
+@available(iOS 18.0, *)
+extension NewMainTabBarViewController: InstanceTimelineViewControllerDelegate {
+    func didSaveInstance(url: URL) {
+        dismiss(animated: true) {
+            let tab = self.instancesGroup.tab(forIdentifier: InstanceTab.identifier(for: url))!
+            self.selectedTab = tab
+        }
+    }
+    
+    func didUnsaveInstance(url: URL) {
+        dismiss(animated: true)
+    }
+}
+
+private struct MyProfileContentConfiguration: UIContentConfiguration {
+    let wrapped: any UIContentConfiguration
+    @Box var view: UIView?
+    let configureView: (UIView) -> Void
+    
+    init(wrapped: any UIContentConfiguration, view: Box<UIView?>, configureView: @escaping (UIView) -> Void) {
+        self.wrapped = wrapped
+        self._view = view
+        self.configureView = configureView
+    }
+    
+    func makeContentView() -> any UIView & UIContentView {
+        let view = wrapped.makeContentView()
+        self.view = view
+        configureView(view)
+        return view
+    }
+    
+    func updated(for state: any UIConfigurationState) -> Self {
+        return .init(wrapped: wrapped.updated(for: state), view: $view, configureView: configureView)
+    }
+}
+
+@available(iOS 18.0, *)
+private class MyProfileTab: UITab {
+    private let mastodonController: MastodonController
+    private var avatarStyle: AvatarStyle?
+    
+    init(mastodonController: MastodonController, viewControllerProvider: @escaping (UITab) -> UIViewController) {
+        self.mastodonController = mastodonController
+        
+        // try to add the avatar image synchronously if possible
+        var avatarImage: UIImage?
+        if !Preferences.shared.grayscaleImages,
+           let account = mastodonController.account,
+           let avatarURL = account.avatar,
+           let avatar = ImageCache.avatars.get(avatarURL) {
+            avatarImage = Self.renderAvatar(avatar.image)
+            self.avatarStyle = Preferences.shared.avatarStyle
+        }
+        
+        let image = avatarImage ?? UIImage(systemName: "person")!
+        super.init(title: "My Profile", image: image, identifier: NewMainTabBarViewController.Tab.myProfile.rawValue, viewControllerProvider: viewControllerProvider)
+        
+        if avatarImage == nil {
+            Task {
+                await updateAvatar()
+            }
+        }
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
+    }
+    
+    private func updateAvatar() async {
+        guard let account = try? await mastodonController.getOwnAccount(),
+              let avatarURL = account.avatar,
+              let image = await ImageCache.avatars.get(avatarURL).1 else {
+            return
+        }
+        
+        let maybeGrayscale = await ImageGrayscalifier.convertIfNecessary(url: avatarURL, image: image) ?? image
+        let rendered = Self.renderAvatar(maybeGrayscale)
+        
+        self.avatarStyle = Preferences.shared.avatarStyle
+        self.image = rendered
+    }
+    
+    private static func renderAvatar(_ image: UIImage) -> UIImage {
+        let size = MainSidebarMyProfileCollectionViewCell.avatarImageSize
+        let radius = Preferences.shared.avatarStyle.cornerRadiusFraction * size
+        let rect = CGRect(x: 0, y: 0, width: size, height: size)
+        let renderer = UIGraphicsImageRenderer(bounds: rect)
+        let rendered = renderer.image { ctx in
+            UIBezierPath(roundedRect: rect, cornerRadius: radius).addClip()
+            image.draw(in: rect)
+        }
+        return rendered.withRenderingMode(.alwaysOriginal)
+    }
+    
+    @objc private func preferencesChanged() {
+        if avatarStyle != nil,
+           avatarStyle != Preferences.shared.avatarStyle {
+            Task {
+                await updateAvatar()
+            }
+        }
+    }
+}
+
+@available(iOS 18.0, *)
+private class ListTab: UITab {
+    let list: List
+    
+    init(list: List, viewControllerProvider: @escaping (UITab) -> UIViewController) {
+        self.list = list
+        super.init(title: list.title, image: UIImage(systemName: "list.bullet"), identifier: Self.identifier(for: list), viewControllerProvider: viewControllerProvider)
+    }
+    
+    static func identifier(for list: List) -> String {
+        "list:\(list.id)"
+    }
+}
+
+@available(iOS 18.0, *)
+private class HashtagTab: UITab {
+    let hashtagName: String
+    
+    init(hashtagName: String, viewControllerProvider: @escaping (UITab) -> UIViewController) {
+        self.hashtagName = hashtagName
+        super.init(title: hashtagName, image: UIImage(systemName: "number"), identifier: Self.identifier(for: hashtagName), viewControllerProvider: viewControllerProvider)
+    }
+    
+    static func identifier(for name: String) -> String {
+        "hashtag:\(name)"
+    }
+}
+
+@available(iOS 18.0, *)
+private class InstanceTab: UITab {
+    let instance: SavedInstance
+    
+    init(instance: SavedInstance, viewControllerProvider: @escaping (UITab) -> UIViewController) {
+        self.instance = instance
+        super.init(title: instance.url.host!, image: UIImage(systemName: "globe"), identifier: Self.identifier(for: instance), viewControllerProvider: viewControllerProvider)
+    }
+    
+    static func identifier(for instance: SavedInstance) -> String {
+        "instance:\(instance.url.host!)"
+    }
+    
+    static func identifier(for instanceURL: URL) -> String {
+        "instance:\(instanceURL.host!)"
+    }
+}

Tusker/Screens/Notifications/NotificationsCollectionViewController.swift

@@ -108,8 +108,8 @@ class NotificationsCollectionViewController: UIViewController, TimelineLikeColle
         collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
         NSLayoutConstraint.activate([
-            collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
-            collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
             collectionView.topAnchor.constraint(equalTo: view.topAnchor),
             collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
         ])

Tusker/Screens/Profile/ProfileStatusesViewController.swift

@@ -26,9 +26,7 @@ class ProfileStatusesViewController: UIViewController, TimelineLikeCollectionVie
     private var older: RequestRange?
     private var cancellables = Set<AnyCancellable>()
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private(set) var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     var headerCell: ProfileHeaderCollectionViewCell? {
         collectionView.cellForItem(at: IndexPath(item: 0, section: 0)) as? ProfileHeaderCollectionViewCell
@@ -56,7 +54,9 @@ class ProfileStatusesViewController: UIViewController, TimelineLikeCollectionVie
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
         config.backgroundColor = .appBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
@@ -103,10 +103,18 @@ class ProfileStatusesViewController: UIViewController, TimelineLikeCollectionVie
                 return section
             }
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
         
         registerTimelineLikeCells()
         dataSource = createDataSource()
@@ -115,10 +123,6 @@ class ProfileStatusesViewController: UIViewController, TimelineLikeCollectionVie
         collectionView.refreshControl = UIRefreshControl()
         collectionView.refreshControl!.addTarget(self, action: #selector(refresh), for: .valueChanged)
         #endif
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
                 
         mastodonController.persistentContainer.accountSubject
             .receive(on: DispatchQueue.main)

Tusker/Screens/Search/SearchResultsViewController.swift

@@ -36,7 +36,7 @@ class SearchResultsViewController: UIViewController, CollectionViewController {
     weak var delegate: SearchResultsViewControllerDelegate?
     var tokenHandler: ((String, SearchOperatorType) -> Void)?
     
-    var collectionView: UICollectionView! { view as? UICollectionView }
+    private(set) var collectionView: UICollectionView!
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     /// Types of results to search for.
@@ -62,7 +62,9 @@ class SearchResultsViewController: UIViewController, CollectionViewController {
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
         let layout = UICollectionViewCompositionalLayout { [unowned self] sectionIndex, environment in
             let sectionIdentifier = self.dataSource.sectionIdentifier(for: sectionIndex)!
             switch sectionIdentifier {
@@ -102,7 +104,7 @@ class SearchResultsViewController: UIViewController, CollectionViewController {
                 return .list(using: config, layoutEnvironment: environment)
             }
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
@@ -110,12 +112,16 @@ class SearchResultsViewController: UIViewController, CollectionViewController {
         #if !os(visionOS)
         collectionView.keyboardDismissMode = .interactive
         #endif
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
 
         dataSource = createDataSource()
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
         
         searchCancellable = searchSubject
             .debounce(for: .seconds(1), scheduler: RunLoop.main)

Tusker/Screens/Status Action Account List/StatusActionAccountListCollectionViewController.swift

@@ -19,9 +19,7 @@ class StatusActionAccountListCollectionViewController: UIViewController, Collect
     
     private var needsInaccurateCountWarning = false
     
-    var collectionView: UICollectionView! {
+    private(set) var collectionView: UICollectionView!
-        view as? UICollectionView
-    }
     private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
     
     private var state: State = .unloaded
@@ -45,7 +43,11 @@ class StatusActionAccountListCollectionViewController: UIViewController, Collect
         fatalError("init(coder:) has not been implemented")
     }
     
-    override func loadView() {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        view.backgroundColor = .appGroupedBackground
+        
         var accountsConfig = UICollectionLayoutListConfiguration(appearance: .grouped)
         accountsConfig.backgroundColor = .appGroupedBackground
         accountsConfig.itemSeparatorHandler = { [unowned self] indexPath, sectionConfig in
@@ -85,10 +87,19 @@ class StatusActionAccountListCollectionViewController: UIViewController, Collect
             section.readableContentInset(in: environment)
             return section
         }
-        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(collectionView)
+        NSLayoutConstraint.activate([
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
+            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
+            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        
         dataSource = createDataSource()
     }
     

Tusker/Screens/Status Edit History/StatusEditHistoryViewController.swift

@@ -35,6 +35,8 @@ class StatusEditHistoryViewController: UIViewController, CollectionViewControlle
     override func viewDidLoad() {
         super.viewDidLoad()
         
+        view.backgroundColor = .appGroupedBackground
+        
         var config = UICollectionLayoutListConfiguration(appearance: .grouped)
         config.backgroundColor = .appGroupedBackground
         config.itemSeparatorHandler = { [unowned self] indexPath, sectionConfig in
@@ -62,8 +64,8 @@ class StatusEditHistoryViewController: UIViewController, CollectionViewControlle
         collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
         NSLayoutConstraint.activate([
-            collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
-            collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
             collectionView.topAnchor.constraint(equalTo: view.topAnchor),
             collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
         ])

Tusker/Screens/Timeline/TimelineViewController.swift

@@ -123,8 +123,8 @@ class TimelineViewController: UIViewController, TimelineLikeCollectionViewContro
         collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
         NSLayoutConstraint.activate([
-            collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
-            collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
             collectionView.topAnchor.constraint(equalTo: view.topAnchor),
             collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
         ])

Tusker/Screens/Utilities/AdaptableNavigationController.swift

@@ -0,0 +1,150 @@
+//
+//  AdaptableNavigationController.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 8/20/24.
+//  Copyright © 2024 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import Combine
+
+@available(iOS 17.0, *)
+class AdaptableNavigationController: UIViewController {
+    
+    private let viewControllersToPrependInCompact: [UIViewController]
+    
+    private var initialViewControllers: [UIViewController] = []
+    private lazy var regular = makeRegularNavigationController()
+    private lazy var compact = makeCompactNavigationController()
+    private var _current: (any NavigationControllerProtocol)?
+    var current: any NavigationControllerProtocol {
+        traitCollection.horizontalSizeClass == .regular ? regular : compact
+    }
+    
+    init(viewControllersToPrependInCompact: [UIViewController] = []) {
+        self.viewControllersToPrependInCompact = viewControllersToPrependInCompact
+        
+        super.init(nibName: nil, bundle: nil)
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        updateNavigationController()
+        registerForTraitChanges([UITraitHorizontalSizeClass.self]) { (self: AdaptableNavigationController, previousTraitCollection) in
+            self.updateNavigationController()
+        }
+    }
+    
+    private func updateNavigationController() {
+        let isTransferring: Bool
+        var stack: [UIViewController]
+        if let _current {
+            _current.removeViewAndController()
+            stack = _current.viewControllers
+            isTransferring = true
+        } else {
+            stack = initialViewControllers
+            initialViewControllers = []
+            isTransferring = false
+        }
+        
+        if traitCollection.horizontalSizeClass == .regular {
+            if isTransferring {
+                stack.removeFirst(viewControllersToPrependInCompact.count)
+            }
+        } else {
+            stack.insert(contentsOf: viewControllersToPrependInCompact, at: 0)
+        }
+        
+        _current = current
+        current.viewControllers = stack
+        
+        addChild(current)
+        current.view.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(current.view)
+        NSLayoutConstraint.activate([
+            current.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            current.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            current.view.topAnchor.constraint(equalTo: view.topAnchor),
+            current.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        current.didMove(toParent: self)
+    }
+    
+    private func makeRegularNavigationController() -> any NavigationControllerProtocol {
+        // TODO: need to figure out how to update the navigation controller if the pref changes
+        switch Preferences.shared.widescreenNavigationMode {
+        case .stack:
+            return EnhancedNavigationViewController()
+        case .splitScreen:
+            return SplitNavigationController()
+        case .multiColumn:
+            return MultiColumnNavigationController()
+        }
+    }
+    
+    private func makeCompactNavigationController() -> any NavigationControllerProtocol {
+        EnhancedNavigationViewController()
+    }
+}
+
+@available(iOS 17.0, *)
+extension AdaptableNavigationController: NavigationControllerProtocol {
+    var viewControllers: [UIViewController] {
+        get {
+            _current?.viewControllers ?? initialViewControllers
+        }
+        set {
+            if let _current {
+                _current.viewControllers = newValue
+            } else {
+                initialViewControllers = newValue
+            }
+        }
+    }
+    
+    var topViewController: UIViewController? {
+        if let _current {
+            return _current.topViewController
+        } else {
+            return initialViewControllers.last
+        }
+    }
+    
+    func popToRootViewController(animated: Bool) -> [UIViewController]? {
+        if let _current {
+            return _current.popToRootViewController(animated: animated)
+        } else {
+            defer { initialViewControllers = [] }
+            return initialViewControllers
+        }
+    }
+    
+    func pushViewController(_ vc: UIViewController, animated: Bool) {
+        if let _current {
+            _current.pushViewController(vc, animated: animated)
+        } else {
+            initialViewControllers.append(vc)
+        }
+    }
+}
+
+@available(iOS 17.0, *)
+extension AdaptableNavigationController: BackgroundableViewController {
+    func sceneDidEnterBackground() {
+        (topViewController as? BackgroundableViewController)?.sceneDidEnterBackground()
+    }
+}
+
+@available(iOS 17.0, *)
+extension AdaptableNavigationController: StatusBarTappableViewController {
+    func handleStatusBarTapped(xPosition: CGFloat) -> StatusBarTapActionResult {
+        (topViewController as? StatusBarTappableViewController)?.handleStatusBarTapped(xPosition: xPosition) ?? .continue
+    }
+}